CN100422811C - Reflective liquid crystal display device - Google Patents
Reflective liquid crystal display device Download PDFInfo
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- CN100422811C CN100422811C CNB2004100431920A CN200410043192A CN100422811C CN 100422811 C CN100422811 C CN 100422811C CN B2004100431920 A CNB2004100431920 A CN B2004100431920A CN 200410043192 A CN200410043192 A CN 200410043192A CN 100422811 C CN100422811 C CN 100422811C
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C9/00—Life-saving in water
- B63C9/08—Life-buoys, e.g. rings; Life-belts, jackets, suits, or the like
- B63C9/13—Life-buoys, e.g. rings; Life-belts, jackets, suits, or the like attachable to body member, e.g. arm, neck, head or waist
- B63C9/15—Life-buoys, e.g. rings; Life-belts, jackets, suits, or the like attachable to body member, e.g. arm, neck, head or waist having gas-filled compartments
- B63C9/155—Life-buoys, e.g. rings; Life-belts, jackets, suits, or the like attachable to body member, e.g. arm, neck, head or waist having gas-filled compartments inflatable
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/52—PV systems with concentrators
Abstract
Provided is a reflection type liquid crystal display capable of enhancing transmissivity of light transmitted from a liquid crystal element. The reflection type liquid crystal display 1 is provided with the liquid crystal element 100 having glass substrates 103 and 104 and a liquid crystal layer 107, a solar battery 101 provided with a glass substrate 400, a photovoltaic force generating part 405, and a light absorbing layer 404, a rubber sheet layer 102 intervening between the glass substrate 104 of the liquid crystal element 100 and the glass substrate 400 of the solar battery 101, and a non-figured driving circuit.
Description
Technical field
The present invention relates to reflection-type liquid-crystal display device, particularly at the inboard lamination of liquid crystal cell the reflection-type liquid-crystal display device of solar cell.
Background technology
In the past, with take into account the slimming that realizes portable electric appts etc., lightweight with for a long time battery-operated be purpose, and be the liquid crystal indicator of feature with the low-power consumption, use be the reflection-type liquid-crystal display device that utilizes exterior light.Also disclose a kind of transflective liquid crystal display device among this reflection-type liquid-crystal display device, reflecting plate uses the half transmitting plate, and the where there is light can be used as reflection-type, and the dark place can be used as uses transmission-type (for example in the Japanese kokai publication hei 11-002709 communique) backlight.
Have again, in recent years for example (Japan) spy opens in the flat 08-160386 communique and also discloses a kind of liquid crystal indicator, behind by the liquid crystal cell that uses in liquid crystal indicator is provided with solar cell, makes to be suitable for liquid crystal indicator energy-conservation and that taking in property is good.
In such liquid crystal indicator with solar cell, because solar cell and liquid crystal cell must be fixed into certain shape, thus generally constitute with opaque double sticky tape only be adhesively fixed they peripheral part and the certain acceptance of solar cell from the light of the central portion transmission of liquid crystal cell.
But, use the aforesaid method that is adhesively fixed, between solar cell and liquid crystal cell, form air layer (Fig. 6).Generally, liquid-crystal apparatus is formed by the glass substrate of refractive index about 1.5, and is relative with it, and the refractive index of air layer is less to be about 1.0, so exist from the such problem of the optical transmission rate variance of liquid crystal cell transmission.
Summary of the invention
The purpose of this invention is to provide and to make the reflection-type liquid-crystal display device that improves from the optical transmission rate of liquid crystal cell transmission.
In order to reach above-mentioned purpose, reflection-type liquid-crystal display device of the present invention, be included in holding liquid crystal forms between two transparency carriers with electrode liquid crystal cell, and on other transparency carrier, arranged the solar cell of photoelectromotive force generating unit, above-mentioned other transparency carrier is mutually opposed with a side of above-mentioned two transparency carriers, it is characterized in that, rubber layer is between a side and above-mentioned other transparency carrier of above-mentioned two transparency carriers, and the transparent and refractive index of above-mentioned rubber layer equates substantially with a side and above-mentioned other transparency carrier of above-mentioned two transparency carriers.
In order to reach above-mentioned purpose, according to reflection-type liquid-crystal display device of the present invention, rubber layer is between a side of two transparency carriers with liquid crystal cell and have between other transparency carrier of solar cell, transparent and the refractive index of above-mentioned rubber layer equates substantially with a side and above-mentioned other transparency carrier of above-mentioned two transparency carriers, so, can improve optical transmission rate from the liquid crystal cell transmission, and, can improve impact resistance owing to have rubber layer, for example, this display device is used for also can obtain the long life-span under the situation of touch-screen and the liquid crystal indicator that is used to carry etc.
In the preferred said structure, above-mentioned rubber layer reversibly fluid-tight engagement in whole of above-mentioned liquid crystal cell and above-mentioned solar cell.
According to said structure, since rubber layer reversibly fluid-tight engagement in whole of liquid crystal cell and solar cell, so, can improve the fluid-tight engagement between liquid crystal cell and solar cell, and, can easily revise bonding bad owing to peel off this rubber layer easily.
More preferably in above-mentioned preferred structure, a side of above-mentioned two transparency carriers and above-mentioned other transparency carrier are formed by glass respectively, and above-mentioned rubber layer is formed by silicon rubber.
According to said structure, because a side and above-mentioned other transparency carrier of above-mentioned two transparency carriers are formed by glass respectively, and above-mentioned rubber layer is formed by silicon rubber, so, can be because of organic siliconresin self transparent and its refractive index and glass equate to play really the effect of foregoing invention substantially, and can have the effect that compatibility plays foregoing invention really to the glass on surface because of organic siliconresin.
Further preferably in above-mentioned preferred structure, above-mentioned liquid crystal has Memorability.
According to said structure, because liquid crystal has Memorability, so if only when the switchable liquid crystal display element, power up, then available more low-power consumption work.
Further preferably in above-mentioned preferred structure, above-mentioned solar cell is the noncrystalline type, and above-mentioned rubber layer blueness.
According to said structure, because solar cell is the noncrystalline type, and rubber layer blueness, becomes not remarkable so electrode surface is the figure seam of the solar cell of purple reflected colour, and visibility is improved.
Further preferably in above-mentioned preferred structure, the color that the color of above-mentioned liquid crystal is lain under the surface state with above-mentioned rubber layer is the relation of complementary color.
According to said structure, because the color of liquid crystal is the relation of complementary color with the color of above-mentioned rubber layer under flat state, so under flat state, can make the color of liquid crystal be white, become liquid crystal panel under flat state for white, under burnt taper attitude for blue showing like paper, can print near paper as far as possible.
Further preferably in above-mentioned preferred structure, when background was black, the peak wavelength of the reflectivity of above-mentioned rubber layer was 430nm～450nm.
According to said structure, because background is when being black, the peak wavelength of the reflectivity of rubber layer is 430nm～450nm, so, can play the effect of foregoing invention really.
Further preferably in above-mentioned preferred structure, the selection reflection wavelength of above-mentioned liquid crystal is 560nm～600nm under flat state.
According to said structure, because the selection reflection wavelength of liquid crystal is 560nm～600nm under flat state, so, can play the effect of foregoing invention really.
Further preferably in above-mentioned preferred structure, above-mentioned solar cell is maximum wavelength with the wavelength between the peak wavelength of the reflectivity of the peak wavelength of the selection reflection wavelength of above-mentioned liquid crystal and above-mentioned rubber layer as making electromotive force.
According to said structure, because solar cell is the wavelength of maximum with the wavelength between the peak wavelength of the reflectivity of the peak wavelength of the selection reflection wavelength of liquid crystal and rubber layer as making electromotive force, even so under the painted situation of rubber layer, can prevent that also the electromotive force of solar cell from descending.In addition, even liquid crystal is the reflective-mode of flat state, can prevent that also the electromotive force of solar cell from descending.
Further preferably in above-mentioned preferred structure, above-mentioned liquid crystal is formed by nematic liquid crystal and chirality agent.
According to said structure, owing to liquid crystal is formed by nematic liquid crystal and chirality agent, so can play the effect of foregoing invention really.
Further preferably in above-mentioned preferred structure, the thickness of above-mentioned rubber layer is 0.2～2.0mm.
According to said structure,,, have enough impact resistances so light transmission does not reduce because the thickness of rubber layer is 0.2～2.0mm.
Description of drawings
Fig. 1 is the sectional view that the present invention represents the cross-section structure of the reflection-type liquid-crystal display device that the 1st embodiment relates to.
Fig. 2 is the curve map of light transmission characteristic of the rubber lamella of presentation graphs 1.
Fig. 3 is the process flow diagram of manufacturing processing sequence of the liquid crystal cell of presentation graphs 1.
Fig. 4 is the figure that is used for the liquid crystal layer selection principle of reflection of key diagram 1, and Fig. 4 (a) expression liquid crystal layer is the situation of flat state, and Fig. 4 (b) expression liquid crystal layer is in the situation of burnt awl (focalconic) state.
Fig. 5 is the figure of cross-section structure of the solar cell of key diagram 1.
Fig. 6 is the sectional view of the cross-section structure of the existing reflection-type liquid-crystal display device of expression.
Fig. 7 is the figure from the solar cell of top view Fig. 1.
Fig. 8 is the figure of the electromotive force efficiency characteristic of the reflective character of the reflective character of expression liquid crystal layer when being flat state, rubber lamella and solar cell.
Fig. 9 is the chromatic diagram of the relation of the colourity of rubber lamella of the reflection-type liquid-crystal display device that relates to of expression the present invention the 2nd embodiment and the liquid crystal layer colourity when being flat state.
Figure 10 is the curve map of the rubber lamella reflection characteristic of the reflection-type liquid-crystal display device that relates to of expression the present invention the 2nd embodiment, and the expression background colour is the situation of black.
Embodiment
The inventor etc. have carried out reaching the research of above-mentioned purpose, found that and be included in the liquid crystal cell that holding liquid crystal forms between two transparency carriers with electrode, reach and on other transparency carrier, arranged the solar cell of photoelectromotive force generating unit, above-mentioned other transparency carrier is arranged in the reflection-type liquid-crystal display device with side's side of above-mentioned two transparency carriers, between a side of above-mentioned two transparency carriers and above-mentioned other transparency carrier, there is the rubber lamella, transparent and the refractive index of this rubber lamella equates substantially with a side of above-mentioned two transparency carriers and the refractive index of above-mentioned other transparency carrier, then can improve optical transmission rate from the liquid crystal cell transmission, and owing to have the rubber lamella and can improve impact resistance, for example, this display device is used for also can obtain the long life-span under the situation of touch-screen etc.
Innovation and creation go out with regard to being based on above-mentioned cognition in the present invention.
Below, with reference to the description of drawings embodiments of the present invention.
Fig. 1 is the sectional view of the cross-section structure of the reflection-type liquid-crystal display device that relates to of expression the 1st embodiment.
In Fig. 1; reflection-type liquid-crystal display device 1 has liquid crystal cell 100, solar cell 101, rubber lamella 102 and not shown driving circuit; wherein; liquid crystal cell 100 has glass substrate 103,104, sealant 106 and liquid crystal layer 107; solar cell 101 has glass substrate 400, semiconductor layer (photoelectromotive force generating unit) 405 and protective seam (light absorbing zone) 404, and rubber lamella 102 is between the glass substrate 400 of the glass substrate 104 of liquid crystal cell 100 and solar cell 101.
In addition, rubber lamella 102 uses the rubber that organosilicons (silicone) are made.(400～600nm) almost do not have light absorption, so as shown in Figure 2, whole wavelength region may of striding the viewing area have 94～95% high like this transmissivities in the viewing area owing to organic siliconresin (silicone resin).This is to consider because also can not use the vulcanizing agent that might become black when making organic siliconresin.
In addition, because there is compatibility on the surface of organic siliconresin to glass, even so do not use any bonding agent or bonding agent, also can be by on the glass substrate 400 of the glass substrate 104 of liquid crystal cell 100 and solar cell 101, rubber lamella 102 being set, and for example closely be fixed on these glass surfaces by press...withing one's finger pressure lightly, even on adhesive surface, can not move after this to the parallel direction skew yet.In addition, on this adhesive surface, for example only insert blade just easily separate rubber lamella 102 and the glass substrate 104 of liquid crystal cell 100 and the glass substrate 400 of solar cell 101 a little.That is to say, the closely fixing of the 102 pairs of glass substrates of rubber lamella that the present invention relates to can not use bonding agent or bonding agent, just can easily closely fix above-mentioned laminated body, on the other hand, thermal treatment such as can not use chemicals or heat, just can easily separate the above-mentioned laminated body of disintegrating (following will have the tight stationarity of this rubber lamella 102 and separate disintegration be called " reversible tight fixing "), so the assembly operation of reflection-type liquid-crystal display device 1 becomes easily, can reduce cost of manufacture.In addition, though this laminated body in regular locational lamination failure, also can be simply and moment disintegrate, separate, assemble again by implementing, can in manufacturing process, carry out non-defective unit regeneration disposal.Therefore, final rise have the rate of good quality rate produce become may this commercial production on extremely useful value.In addition, the assembling of this laminated body can be undertaken by manual operations, also can use automatic adhering device to carry out.
Have again because the thickness of rubber lamella 102 is 0.2～2.0mm, so light transmission do not reduce, so can possess sufficient impact resistance.This is because if the thickness of rubber layer surpasses 2mm, then light transmission reduces a little, if be thinner than 0.2mm, then impact resistance reduces.
Fig. 3 is the process flow diagram of manufacturing processing sequence of the liquid crystal cell of presentation graphs 1.
At first, on the surface of glass substrate 104, form figure and make ito transparent electrode (step S301), then, the film formed alignment films of polyimide macromolecule (step S302) of applied thickness 10～60nm.
Then, be that the mode of inboard is arranged glass substrate 103,104 with patterned ito transparent electrode, by the periphery (step S303, S304) of sealant 106 bonding glass substrates 103,104 such as coating epoxy resin.
In addition, above-mentioned when bonding, set in advance inlet, after injecting liquid crystal layer 107 by vacuum impregnation etc. from this inlet, seal this inlet with ultraviolet curable resin, thereby between glass substrate 103,104, enclose liquid crystal layer 107 (step S305), finish this operation and make liquid crystal cell 100.
Then, use Fig. 4 that the principle of liquid crystal layer 107 selection reflections is described.
Fig. 4 is the figure that is used to illustrate liquid crystal layer selection principle of reflection, and Fig. 4 (a) expression liquid crystal layer is the situation of flat state, and Fig. 4 (b) expression liquid crystal layer is in the situation of burnt taper attitude.
Wherein, liquid crystal layer 107 is the chiral nematic liquid crystal that comprise scheduled volume chirality agent 6 in nematic liquid crystal 5.In addition, in the present embodiment, liquid crystal layer 107 is not limited to use the chiral nematic liquid crystal, also can use cholesteryl liquid crystal etc.
This liquid crystal layer 107 has flat state and burnt taper attitude, this flat state is presented on " selecting reflection " state of selecting the reflected wavelength lambda reflection, this Jiao's taper attitude presents the micro-scattering state, in order shifting between this flat state and burnt taper attitude, to apply predetermined pulse voltage respectively and gets final product.Each state during making alive is not kept this state, till applying new voltage.Below such effect is called " memory effect ".
Because reflection-type liquid-crystal display device 1 is the element that possesses above-mentioned memory effect, thus power consumption can be reduced, and also the reflection that does not need to use polaroid also can obtain becoming clear shows.
In Fig. 4, when liquid crystal layer 107 is burnt taper attitude, if the graphical not shown ito transparent electrode that forms applies predetermined voltage from the glass substrate 104, complanation state then.On the contrary, when liquid crystal layer 107 is flat state, apply predetermined voltage, then become burnt taper attitude from above-mentioned ito transparent electrode.
When liquid crystal layer 107 was flat state, the relative glass substrate 103,104 of spiral fashion axle (screw axis) 5a of nematic liquid crystal 5 arranged in vertical direction that fifty-fifty 107 pairs of liquid crystal layers select the light of reflected wavelength lambda to reflect.Should select the peak wavelength λ of reflected wavelength lambda as can be known
0For
λ
0=n * p (n: the birefraction of nematic liquid crystal 5, p: the spiral fashion axial length of nematic liquid crystal 5).
On the other hand, when liquid crystal layer 107 was burnt taper attitude, the relative glass substrate of the spiral fashion axle 5a of nematic liquid crystal 5 103,104 is average arranged in the horizontal direction the light of the above-mentioned selection reflected wavelength lambda of transmission.
Fig. 5 is the figure of cross-section structure of the solar cell of key diagram 1.
At first, form figure and make not shown ito transparent electrode on two surfaces of glass substrate 400 in advance, then, on a surface of glass substrate 400, the photoelectromotive force generating unit 405 that formation order lamination p type semiconductor layer 401, i semiconductor layer 402 and n type semiconductor layer 403 form, at last, on this photoelectromotive force generating unit 405, form light absorbing zone 404 and make solar cell 101.
In addition, in the formation of glass substrate 400 the surperficial formed electrode of photoelectromotive force generating unit 405, as output electrode from 405 outputs of photoelectromotive force generating unit.
Below, the reflection loss of the reflection-type liquid-crystal display device of comparative descriptions Fig. 1 and existing reflection-type liquid-crystal display device.
As shown in Figure 6, existing reflection-type liquid-crystal display device 600 adopts opaque two sides adhesive tape 602 to replace rubber lamella 102, and glass substrate 104 and glass substrate 400 are adhesively fixed on its outer part.Cover from the light of the central portion transmission of liquid crystal cell 100 by this two sides adhesive tape 602, prevent to accept the light of solar cell 101, the outer part of glass substrate 104 and glass substrate 400 so this two sides adhesive tape 602 only is adhesively fixed.Therefore, between solar cell 101 that surrounds by two sides adhesive tape 602 and liquid crystal cell 100, form air layer 601.
The refractive index of air is 1.0, with respect to this, the refractive index of glass substrate 104 and glass substrate 400 is about 1.5, so as shown in Figure 6, light L1 from liquid crystal cell 100,4% of its light quantity is reflected as light L2 ' in interface at air layer 601 and glass substrate 104, reflects 4% of its light quantity at the interface of air layer 601 and glass substrate 400 as light L3 '.
On the other hand, the organic siliconresin that constitutes rubber lamella 102 has 1.40 such refractive indexes, refractive index near glass substrate 104,400, so as shown in Figure 1, light L1 from liquid crystal cell 100,0.12% of its light quantity is reflected as light L2 in interface at rubber lamella 102 and glass substrate 104, reflects 0.12% of its light quantity at the interface of rubber lamella 102 and glass substrate 400 as light L3.
That is to say, and compare that under the situation of sheet rubber layer 102, solar cell 101 can be accepted more from the light of liquid crystal cell 100 transmissions across the situation of air layer 601.
Then, the reflection-type liquid-crystal display device that the present invention's the 2nd embodiment relates to is described.
The reflection-type liquid-crystal display device 900 that present embodiment relates to is same structure with the reflection-type liquid-crystal display device 1 that the 1st embodiment relates to basically, that difference is to use is blue, and (peak reflectance wavelength of the reflectivity of background during as black: 430～450nm) rubber lamella 901 (with reference to Fig. 1) replaces transparent rubber lamella 102.
Below, to the subsidiary same-sign of the structure identical, and omit repeat specification with the 1st embodiment.
Fig. 7 is the figure that sees the solar cell 101 of Fig. 1 from the front.
In Fig. 7, the photoelectromotive force generating unit 405 of solar cell 101 is arranged a m * n figure regularly towards direction in length and breadth on glass substrate 400.The color of this photoelectromotive force generating unit 405 is generally indigo plant～purple.One side of this photoelectromotive force generating unit 405 is generally several mm～ten number mm, and (below be called " figure seam ") is separated by about 1mm between the photoelectromotive force generating unit 405.
Therefore, if use transparent rubber lamella 102 as the 1st embodiment, the user saw that this figure seam is obvious under the situation of liquid crystal panel of reflection-type liquid-crystal display device 1 when then liquid crystal layer 107 was burnt taper attitude, and visibility is poor.
Relative therewith, if as present embodiment, using blue rubber lamella 901, the user saw under the situation of liquid crystal panel of reflection-type liquid-crystal display device 1 when then liquid crystal layer 107 was for burnt taper attitude, because the color of photoelectromotive force generating unit 405 and rubber lamella 901 is basic identical, so the figure seam becomes not obvious, visibility improves.
Have, when the peak wavelength of the selection reflected wavelength lambda when liquid crystal layer 107 is flat state and the reflectivity of rubber lamella 901 existed complementary color to concern, the color that can make liquid crystal under flat state can further improve the visibility of display frame for white again.Particularly, make with the color of rubber lamella 901 is promptly blue to become the yellow that complementary color concerns (λ=560～600nm) are the selection reflected wavelength lambda of the liquid crystal layer 107 of flat state.
According to above result, the reflection-type liquid-crystal display device 900 that present embodiment relates to, the figure seam becomes not remarkable under flat state, and be to become showing of white under the flat state like paper (paper like) at liquid crystal panel, under burnt taper attitude, become blue showing, very the effect of printing near paper like paper.
But, because liquid crystal layer 107 is a reflective condition during for flat state, so though the light of incident light transflective liquid crystal layer 107 arrival solar cell 101 diminishes the peak wavelength λ of the selection reflected wavelength lambda of liquid crystal layer 107 when flat state
0And the wavelength region may between the peak wavelength 800 of the reflectivity of rubber lamella 901, reflectivity is low, i.e. the transmissivity height.Therefore, electromotive force efficient is the solar cell 101 of maximum in this wavelength region may as if using in reflection-type liquid-crystal display device 900, even then liquid crystal layer 107 is a flat state, also can makes and reduce the liquid crystal indicator that electromotive force efficient just can be generated electricity not significantly.
That is to say the peak wavelength λ of the selection emission wavelength lambda of solar cell 101 preferred liquid crystal layers 107
0And the wavelength between the peak wavelength of the reflectivity of rubber lamella 901 is that to make electromotive force be maximum wavelength.
(embodiment)
Then, embodiments of the invention are described.
At first, handle by the manufacturing of above-mentioned Fig. 3, (principal ingredient is SiO to adopt the soda glass material
2: 72 quality %, Na
2O:13 quality %, CaO:8 quality %, Al
2O
3: 1.8 quality %, K
2O:0.9 quality %), be on each single face of glass substrate 103,104 (refractive index 1.52) of 0.7mm the ITO electrode pattern to be set at thickness, coated with orientation film again.Then, making has the liquid crystal cell of liquid crystal layer 107, this liquid crystal layer 107 is between the glass substrate 103,104 that is disposed inboard with this ITO electrode, the aligned liquid-crystal use comprises 70% Merck (Merck) corporate system E44, the chirality agent is used and comprised 30% the system CB15 of Merck ﹠ Co., Inc., the about 9 μ m of thickness.
The peak wavelength λ of the selection reflected wavelength lambda of the liquid crystal cell 100 of present embodiment
0Be 580nm.
Then, at material is that above-mentioned soda-lime glass material, size are that 9 * 22mm, thickness are on the single face of glass substrate 400 of 1.1mm, form figure and make after the ito transparent electrode, on this surface, in the unshowned reaction chamber of figure, with 300 ℃ of substrate temperatures, air pressure 20Pa, import 75sccm (0 ℃, be converted into flow, the cm of 1 atmospheric standard state
3/ min) monosilane (SiH
4) gas+15sccm diborane (B
2H
6), by plasma discharge under RF power 5KW, and in the p type semiconductor layer 401 that forms p type noncrystalline (amorphous) the silicon formation about thickness 0.15 μ m on the glass substrate 400.
Only import monosilane gas 75sccm to reaction chamber,, and form the i type semiconductor layer 402 that intrinsic (i) uncrystalline silicon about thickness 0.20 μ m forms on the surface of p type semiconductor layer 401 by plasma discharge under RF power 5KW.
Then, import 75sccm monosilane (SiH to reaction chamber
4) gas+15sccm hydrogen phosphide (PH
3) gas, form the n type semiconductor layer 403 that the n type uncrystalline silicon about thickness 0.20 μ m forms on the surface of i type semiconductor layer 402.Lamination p type semiconductor layer 401, i type semiconductor layer 402 and n type semiconductor layer 403 form photoelectromotive force generating unit 405 as mentioned above.
This photoelectromotive force generating unit 405 also can be made of GaAs, InP, Cd/CdTe etc.The wavelength dependency of the electromotive force efficient of such solar cell is shown in the dotted line of Fig. 8.
Further lamination the light absorbing zone 404 of black, the light absorbing zone 404 protection photoelectromotive force generating units 405 of this black are brought into play the light absorption function simultaneously.
These light absorbing zone 404 usefulness are coated in the solar cell 101 whole surfaces of photoelectromotive force generating unit 405 1 sides by the painted blackwash of carbon particle.
Then, make the sample that the 1st embodiment relates to, sandwich the rubber lamella 102 of the thickness 0.5mm of transparent organic siliconresin formation between above-mentioned liquid crystal cell 100 and solar cell 101, the press contacts that press...withes one's finger can be made reversible closely fixing sample (embodiment 1).
In addition, as a comparative example 1, replace rubber lamella 102 the be adhesively fixed neighboring of glass substrate 104,400 and manufactured samples with opaque two sides adhesive tape.This sample is the structure of existing reflective liquid crystal device, below as the benchmark electromotive force use of the efficient of electromotive force described later test electromotive force down.
On the other hand, make the sample that the 2nd embodiment relates to, between above-mentioned liquid crystal cell 100 and solar cell 101, sandwich the rubber lamella 901 of the thickness 0.5mm of organic siliconresin formation, make reversible closely fixing sample (embodiment 2) by the press contacts that press...withes one's finger, wherein, the reflective character of rubber lamella 901 when background colour is black is peak value with the wavelength of 450nm as shown in figure 10.
As shown in Figure 8, the colourity of rubber lamella 901 is that (x, y)=(0.16,0.18), (x y)=(0.47,0.51) becomes the complementary color relation to the colourity when being flat state with liquid crystal layer 107, and the color of liquid crystal is a white under flat state.In the present embodiment, silicon rubber (silica gel material: silicone gum) use branch reflective character silicon rubber as shown in Figure 9.
In addition, as a comparative example 2, on glass substrate 104 and surfaces liquid crystal layer 107 nip side surface opposite, the coating black pigment, replace the be adhesively fixed neighboring of glass substrate 104,400 of rubber lamella 102 with opaque two sides adhesive tape then, to make sample.
For these samples, carried out following electromotive force test, the test of seam visibility, shown validation test like paper, the results are shown in table 1.
The electromotive force test
The location arrangements sample of 300mm is so that liquid crystal cell 100 sides are illuminated under the 20w circline, and measuring liquid crystal layer 107 with digital test difference machine is the electromotive force of the solar cell 101 under flat state, the burnt taper attitude.In addition, the electromotive force with liquid crystal layer in the comparative example 1 107 during for flat state, burnt taper attitude is as 100% efficient of obtaining electromotive force, during rising with " zero " expression, during no change with " △ " expression, during decline with " * " expression.
The test of seam visibility
Under flat state, carry out looking the test of sample from liquid crystal cell 100 sidelong glance.Visibility was represented with " zero " when remarkable with " * " expression when the figure seam was remarkable.
Show validation test like paper
Look the sample of embodiment 2 and comparative example 2 from liquid crystal cell 100 sidelong glance, confirm the change color of the liquid crystal under flat state and the burnt taper attitude, when showing like paper with " zero " expression, non-when showing like paper with " * " expression.
[table 1]
According to above result, embodiment 1 can obtain electromotive force efficient can be than the result of conventional example (comparative example 1) raising.This is that so there is the situation of rubber lamella 102, solar cell 101 can be accepted more light from liquid crystal cell 100 transmissions because there is air layer 601 (Fig. 6) in comparative example 1.
But the seam visibility of embodiment 1 and comparative example 1 all is " * ".This is because liquid crystal layer 107 during for burnt taper attitude, can clearly see seam across transparent glass substrate 104, air layer 601 and glass substrate 400.
On the other hand, the seam visibility of known embodiment 2 and comparative example 2 all is " zero ".This is because liquid crystal layer 107 during for burnt taper attitude, across blue rubber lamella 901, so that seam becomes is not obvious.
And the seemingly paper of known embodiment 2 and comparative example 2 shows all be " zero ".This is because liquid crystal layer 107 during for burnt taper attitude, and the seam visibility be " zero " as mentioned above, and makes the color of liquid crystal be the white colourity of adjusting rubber lamella 901 under flat state.
Have again, though embodiment 2 keeps and the essentially identical electromotive force of prior art, but the efficient of the electromotive force of comparative example 2 is lower than prior art, this is because not only produce reflection in air layer 601 edge surface, also produce reflection in the blue paste edge surface of glass substrate 104 surface applied, the light income from the light of liquid crystal cell 100 transmissions to solar cell 101 reduces.
The effect of invention is as follows
As above detailed description, according to reflection-type liquid-crystal display device of the present invention, a side of two transparency carriers with have between other transparency carrier of solar cell and have rubber layer with liquid crystal cell, transparent and the refractive index of this rubber layer equates substantially with a side and above-mentioned other transparency carrier of above-mentioned two transparency carriers, so, can improve optical transmission rate from the liquid crystal cell transmission, and, can improve impact resistance owing to have rubber layer, for example, this display device is used for also can obtain the long life-span under the situation of touch-screen and the liquid crystal indicator that is used to carry etc.
Since the preferred rubber layer reversibly fluid-tight engagement in whole of liquid crystal cell and solar cell, so, can improve the fluid-tight engagement between liquid crystal cell and solar cell, and, owing to peel off this rubber layer easily and can easily revise bonding bad.
Because more preferably a side and above-mentioned other transparency carrier of above-mentioned two transparency carriers are formed by glass respectively, and rubber layer is formed by silicon rubber, so, can be because of organic siliconresin self transparent and its refractive index and glass equate to play really the effect of foregoing invention substantially, and can have the effect that compatibility plays foregoing invention really to the glass on surface because of organic siliconresin.
Because further preferred liquid crystal has Memorability, so if only when the switchable liquid crystal display element, power up, then available more low-power consumption work.
Because further preferred solar cell is the noncrystalline type, and rubber layer blueness, becomes not remarkable so electrode surface is the figure seam of the solar cell of purple reflected colour, and visibility is improved.
Because further the color of preferred liquid crystal is the relation of complementary color with the color of above-mentioned rubber layer under flat state, so under flat state, can make the color of liquid crystal be white, become liquid crystal panel under flat state for white, under burnt taper attitude for blue showing like paper, can print near paper as far as possible.
Because when further preferred background was black, the peak wavelength of the reflectivity of rubber layer was 430nm～450nm, so can play the effect of foregoing invention really.
Because the selection reflection wavelength of further preferred liquid crystal is 560nm～600nm under flat state, so can play the effect of foregoing invention really.
Because further preferred solar cell is the wavelength of maximum with the wavelength between the peak wavelength of the reflectivity of the peak wavelength of the selection reflection wavelength of liquid crystal and rubber layer as making electromotive force, even so under the painted situation of rubber layer, can prevent that also the electromotive force of solar cell from descending.In addition, even liquid crystal is the reflective-mode of flat state, can prevent that also the electromotive force of solar cell from descending.
Because further preferred liquid crystal is formed by nematic liquid crystal and chirality agent, so can play the effect of foregoing invention really.
Because further the thickness of preferred rubber layer is 0.2～2.0mm, so light transmission does not reduce, has enough impact resistances.
Claims (10)
1. reflection-type liquid-crystal display device, be included in holding liquid crystal forms between two transparency carriers with electrode liquid crystal cell, and on other transparency carrier, arranged the solar cell of photoelectromotive force generating unit, above-mentioned other transparency carrier is mutually opposed with a side of above-mentioned two transparency carriers, it is characterized in that
Rubber layer is between a side and above-mentioned other transparency carrier of above-mentioned two transparency carriers, and the transparent and refractive index of above-mentioned rubber layer equates substantially with a side and above-mentioned other transparency carrier of above-mentioned two transparency carriers;
Above-mentioned solar cell is the noncrystalline type, and above-mentioned rubber layer blueness.
2. the reflection-type liquid-crystal display device of putting down in writing as claim 1 is characterized in that, above-mentioned rubber layer reversibly fluid-tight engagement in whole of above-mentioned liquid crystal cell and above-mentioned solar cell.
3. the reflection-type liquid-crystal display device of putting down in writing as claim 1 is characterized in that, a side of above-mentioned two transparency carriers and above-mentioned other transparency carrier are formed by glass respectively, and above-mentioned rubber layer is formed by silicon rubber.
4. the reflection-type liquid-crystal display device of putting down in writing as claim 1 is characterized in that, above-mentioned liquid crystal has Memorability.
5. the reflection-type liquid-crystal display device of putting down in writing as claim 1 is characterized in that, the color of above-mentioned liquid crystal is the relation of complementary color with the color of above-mentioned rubber layer under flat state.
6. the reflection-type liquid-crystal display device of putting down in writing as claim 1 is characterized in that, when background was black, the peak wavelength of the reflectivity of above-mentioned rubber layer was 430nm～450nm.
7. the reflection-type liquid-crystal display device of putting down in writing as claim 1 is characterized in that, the selection reflection wavelength of above-mentioned liquid crystal is 560nm～600nm under flat state.
8. the reflection-type liquid-crystal display device of putting down in writing as claim 1, it is characterized in that above-mentioned solar cell is made as the wavelength between the peak wavelength of the reflectivity of the peak wavelength of the selection reflection wavelength of above-mentioned liquid crystal and above-mentioned rubber layer that to make electromotive force be maximum wavelength.
9. the reflection-type liquid-crystal display device of putting down in writing as claim 1 is characterized in that, above-mentioned liquid crystal is formed by nematic liquid crystal and chirality agent.
10. the reflection-type liquid-crystal display device of putting down in writing as claim 1 is characterized in that, the thickness of above-mentioned rubber layer is 0.2～2.0mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003137681A JP4153360B2 (en) | 2003-05-15 | 2003-05-15 | Reflective liquid crystal display |
| JP137681/2003 | 2003-05-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1550848A CN1550848A (en) | 2004-12-01 |
| CN100422811C true CN100422811C (en) | 2008-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100431920A Expired - Fee Related CN100422811C (en) | 2003-05-15 | 2004-05-14 | Reflective liquid crystal display device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4153360B2 (en) |
| KR (1) | KR101026290B1 (en) |
| CN (1) | CN100422811C (en) |
| TW (1) | TW200502635A (en) |
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|---|---|---|---|---|
| JP4744914B2 (en) * | 2005-04-01 | 2011-08-10 | 三菱電機株式会社 | Liquid crystal display device and large liquid crystal display device using the same |
| WO2006137337A1 (en) * | 2005-06-23 | 2006-12-28 | Tpo Hong Kong Holding Limited | Liquid crystal display having photoelectric converting function |
| JP5125833B2 (en) * | 2008-07-14 | 2013-01-23 | ブラザー工業株式会社 | Color correction sheet and display device using the color correction sheet |
| CN101685218B (en) * | 2008-09-24 | 2012-04-04 | 北京京东方光电科技有限公司 | Liquid crystal display panel array substrate and manufacture method thereof |
| CN101520584B (en) | 2009-03-30 | 2012-06-27 | 昆山龙腾光电有限公司 | Liquid crystal display panel and liquid crystal display device and manufacture method of liquid crystal display panel |
| JP2011008086A (en) * | 2009-06-26 | 2011-01-13 | Toshiba Corp | Electronic device |
| CN101995691B (en) * | 2009-08-20 | 2013-05-15 | 上海天马微电子有限公司 | Liquid crystal display device |
| CN101814514B (en) * | 2010-03-15 | 2012-02-22 | 广东中显科技有限公司 | Substrate for preparing displays |
| JP2012032420A (en) * | 2010-07-28 | 2012-02-16 | Fujitsu Ltd | Liquid crystal display device |
| CN102402900B (en) * | 2010-09-17 | 2015-11-25 | 国网上海市电力公司 | Be provided with the display of solar cell |
| WO2014055549A2 (en) | 2012-10-01 | 2014-04-10 | Ubiquitous Energy, Inc. | Wavelength-selective photovoltaic for a display or for a device with a display |
| US20150369433A1 (en) * | 2013-02-07 | 2015-12-24 | 3M Innovative Properties Company | SELF-POWERED e-PAPER DISPLAY |
| CN106201039B (en) * | 2015-04-30 | 2023-05-23 | 安徽精卓光显技术有限责任公司 | Touch screen and protective film |
| CN106405881B (en) * | 2016-08-31 | 2019-11-19 | 京东方科技集团股份有限公司 | A kind of optical module and preparation method thereof, optical device |
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- 2003-05-15 JP JP2003137681A patent/JP4153360B2/en not_active Expired - Fee Related
-
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- 2004-05-05 TW TW093112667A patent/TW200502635A/en unknown
- 2004-05-14 KR KR1020040034333A patent/KR101026290B1/en not_active IP Right Cessation
- 2004-05-14 CN CNB2004100431920A patent/CN100422811C/en not_active Expired - Fee Related
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| CN1082989A (en) * | 1993-01-03 | 1994-03-02 | 陈世华 | A kind of manufacture method of coloured glass wall tile (floor brick) |
| JPH1096889A (en) * | 1996-09-19 | 1998-04-14 | Toshiba Corp | Liquid crystal display device |
| JPH11258576A (en) * | 1998-03-10 | 1999-09-24 | Citizen Watch Co Ltd | Liquid crystal display panel and its manufacture |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20040098600A (en) | 2004-11-20 |
| TW200502635A (en) | 2005-01-16 |
| JP4153360B2 (en) | 2008-09-24 |
| KR101026290B1 (en) | 2011-03-31 |
| JP2004341239A (en) | 2004-12-02 |
| CN1550848A (en) | 2004-12-01 |
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