CN102200864A - Optical touch device - Google Patents
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- CN102200864A CN102200864A CN2010102287690A CN201010228769A CN102200864A CN 102200864 A CN102200864 A CN 102200864A CN 2010102287690 A CN2010102287690 A CN 2010102287690A CN 201010228769 A CN201010228769 A CN 201010228769A CN 102200864 A CN102200864 A CN 102200864A
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Abstract
The invention discloses an optical touch device, which comprises a photo-permeable substrate and at least one light emitting and receiving unit. The photo-permeable substrate is provided with a touch plane and a plurality of side faces, wherein at least one side face is a first light-incidence plane; and the at least one side face is a first light-emergence plane which is opposite to the first light-incidence plane. The light emitting and receiving unit comprises a line light source, a light path adjusting element and a photo-sensing element, wherein the line light source is arranged beside the first light-incidence plane of the photo-permeable substrate and applied to providing a light signal for the photo-permeable substrate; the light path adjusting element is arranged between the line light source and the first light-incidence plane and applied to emitting the light signal from the first light-incidence plane to the photo-permeable substrate at a preset angle; and the photo-sensing element is arranged beside the first light-emergence plane of the photo-permeable substrate and applied to receiving the light signal which is provided by the line light source. The optical touch device has better light utilization efficiency.
Description
Technical field
The invention relates to a kind of contactor control device, and particularly relevant for a kind of optical touch-control device.
Background technology
Contactor control device has the advantage of processing ease, so contactor control device has been widely used in multiple electronic product in recent years, as mobile phone, personal digital assistant (personal digital assistant, PDA), digital camera, music player, computer, Satellite Navigation Set etc.Common contactor control device comprises electric resistance touch-control device, capacitive touch device and optical touch-control device etc. at present, and wherein optical touch-control device has lower-cost advantage.
Fig. 1 is the diagrammatic cross-section of existing a kind of optical touch-control device.Please refer to Fig. 1, existing optical touch-control device 100 comprises a transparent substrates 110, two line sources 120 (Fig. 1 only illustrates) and two Photosensing Units 130 (Fig. 1 only illustrates), wherein transparent substrates 110 is rectangular, and each line source 120 is corresponding with a Photosensing Units 130, and lays respectively at the relative both sides of transparent substrates 110.Each line source 120 is disposed at an incidence surface 112 sides of transparent substrates 110, and each Photosensing Units 130 is disposed at an exiting surface 114 sides of transparent substrates 110.In addition, between each Photosensing Units 130 and exiting surface 114, be provided with a lens combination 140.
In the above-mentioned optical touch-control device 100, the light emitting diode 122 of line source 120 is in order to provide light signal 123.Light signal 123 is from the incidence surface 12 incident transparent substrates 110 of transparent substrates 110, and then part optical signals 123 produces in transparent substrates 110 after the repeatedly total reflection from exiting surface 114 outgoing.Lens combination 140 is in order to receiving these light signals 123, and light signal 123 is converged to Photosensing Units 130.When a touch surface 116 of a touching control 50 (as finger or pen etc.) contact transparent substrates 110, the light signal 123 that is passed to the part touch surface 116 that touching control 50 contacted can't produce total reflection, so that can't be received by Photosensing Units 130.So, the wherein axial position of touching control 50 in touch surface 116 judged in the position that does not receive the subregion of light signal 123 in can the sensing area according to each Photosensing Units 130.So the information that is sensed by two Photosensing Units 130 can calculate the tram of touching control 50 in touch surface 116.
In the prior art, because the incident angle of light signal 123 during from incidence surface 112 incident transparent substrates 110 is inconsistent, cause into optical efficiency relatively poor.And part optical signals 123 does not produce total reflection and just leaves transparent substrates 110 from exiting surface 114 in transparent substrates 110, and this will reduce the sensing accuracy of Photosensing Units 130.In addition, light signal 123 is comparatively dispersed from the angle that exiting surface 114 leaves behind the transparent substrates 110, causes the receipts optical efficiency of lens combination 140 relatively poor, so that reduce the sensing effect of Photosensing Units 130.
Summary of the invention
The invention provides a kind of optical touch-control device,, improve the light utilization ratio with by the efficient that increases light signal incident transparent substrates.
The present invention provides a kind of optical touch-control device in addition, with by the efficient that increases light signal incident light sensing element, improves the light utilization ratio.
The present invention proposes a kind of optical touch-control device, and it comprises a transparent substrates and emission of at least one light and receiving element.Transparent substrates has a touch surface and a plurality of sides that are connected touch surface.These sides one of them is one first incidence surface at least, these sides one of them is one first exiting surface relative with first incidence surface at least.Each light emission and receiving element comprise a line source, light path adjustment element and a Photosensing Units.Line source is disposed at by first incidence surface of transparent substrates, and line source is suitable for providing light signal to transparent substrates.Light path is adjusted arrangements of components between the line source and first incidence surface, and the light signal that light path adjustment element is suitable for line source is provided is complied with a predetermined angular from the first incidence surface incident transparent substrates.Photosensing Units is disposed at by first exiting surface of transparent substrates, and line source and Photosensing Units are positioned at the relative both sides of transparent substrates, and Photosensing Units is suitable for receiving the light signal that line source provides.
In one embodiment of this invention, above-mentioned line source comprises a light guide plate, a light-emitting component and a cover body.Light guide plate has one second adjacent incidence surface and one second exiting surface, and wherein second exiting surface is relative with light path adjustment element.Light-emitting component is disposed at by second incidence surface, and is suitable for launching infrared signal.Ccontaining light guide plate of cover body and light-emitting component.
In one embodiment of this invention, above-mentioned each light emission and receiving element more comprise a light collecting element, are disposed between the Photosensing Units and first exiting surface.Light collecting element is suitable for receiving the light signal from the first exiting surface outgoing, and the surface away from transparent substrates of light collecting element is provided with a light emitting structures, so that light signal is passed to Photosensing Units via light emitting structures.This light emitting structures comprises optical grating construction or cloudy surface structure.
In one embodiment of this invention, above-mentioned each light emission and receiving element more comprise a lens combination, are disposed between Photosensing Units and the light collecting element, and lens combination is suitable for light signal is converged to Photosensing Units.
In one embodiment of this invention, above-mentioned each light emission and receiving element more comprise a reflecting element, are disposed between Photosensing Units and the light collecting element.Reflecting element is suitable for light signal is reflexed to Photosensing Units, and the reflecting element of each light emission and receiving element comprises a prism.This prism has one the 3rd incidence surface, a reflecting surface and one the 3rd exiting surface.The 3rd incidence surface is relative with light collecting element, and the 3rd exiting surface is relative with Photosensing Units, and reflecting surface is connected between the 3rd exiting surface and the 3rd incidence surface.
In one embodiment of this invention, above-mentioned each light emission and receiving element more comprise a refracting element, are disposed between reflecting element and the light collecting element.This refracting element is suitable for light signal is refracted to reflecting element.
In one embodiment of this invention, each above-mentioned light path adjustment element has one the 4th relative incidence surface and one the 4th exiting surface.The 4th incidence surface is protruding curved surface to line source, and the 4th exiting surface is the inclined-plane.
In one embodiment of this invention, above-mentioned transparent substrates is a substrate of a display panel.Touch surface and a surface relative with touch surface are respectively equipped with a reflection horizon, and the reflection horizon is suitable for the reflective infrared light signal.
In one embodiment of this invention, the first above-mentioned incidence surface is the inclined-plane.
In one embodiment of this invention, above-mentioned Photosensing Units has a sensing area, and the light signal that line source provides produces total reflection in transparent substrates.When touching control contact touch surface, touching control is destroyed the total reflection of part optical signals, so that the part sensing area of Photosensing Units can't receive light signal.
In one embodiment of this invention, above-mentioned optical touch-control device more comprises a processing unit, is electrically connected to Photosensing Units.Processing unit is suitable for judging according to the position that does not receive the part sensing area of light signal the position of touching control.
The present invention proposes a kind of optical touch-control device in addition, and it comprises a transparent substrates and emission of at least one light and receiving element.Transparent substrates has a touch surface and a plurality of sides that are connected touch surface.These sides one of them is one first incidence surface at least, these sides one of them is one first exiting surface relative with first incidence surface at least.Each light emission and receiving element comprise a line source, a Photosensing Units and a light collecting element.Line source is disposed at by first incidence surface of transparent substrates, and line source is suitable for providing light signal to transparent substrates.Photosensing Units is disposed at by first exiting surface of transparent substrates, and line source and Photosensing Units are positioned at the relative both sides of transparent substrates.Photosensing Units is suitable for receiving the light signal that line source provides.Light collecting element is disposed between the Photosensing Units and first exiting surface, and light collecting element is suitable for receiving the light signal from the first exiting surface outgoing.Surface away from transparent substrates of light collecting element is provided with a light emitting structures, so that light signal is passed to Photosensing Units via light emitting structures.
In one embodiment of this invention, each above-mentioned line source comprises a light guide plate, a light-emitting component and a cover body.Light guide plate has one second adjacent incidence surface and one second exiting surface, and second exiting surface is relative with light path adjustment element.Light-emitting component is disposed at by second incidence surface, and is suitable for launching infrared signal.Ccontaining light guide plate of cover body and light-emitting component.
In one embodiment of this invention, above-mentioned light emitting structures comprises optical grating construction or cloudy surface structure.
In one embodiment of this invention, above-mentioned each light emission and receiving element more comprise a lens combination, are disposed between Photosensing Units and the light collecting element.Lens combination is suitable for light signal is converged to Photosensing Units.
In one embodiment of this invention, above-mentioned each light emission and receiving element more comprise a reflecting element, are disposed between Photosensing Units and the light collecting element.Reflecting element is suitable for light signal is reflexed to Photosensing Units, and reflecting element comprises a prism.Prism has one the 3rd incidence surface, a reflecting surface and one the 3rd exiting surface.The 3rd incidence surface is relative with light collecting element, and the 3rd exiting surface is relative with Photosensing Units, and reflecting surface is connected between the 3rd exiting surface and the 3rd incidence surface.
In one embodiment of this invention, above-mentioned each light emission and receiving element more comprise a refracting element, are disposed between reflecting element and the light collecting element.This refracting element is suitable for light signal is refracted to reflecting element.
In one embodiment of this invention, above-mentioned transparent substrates is a substrate of a display panel, and touch surface and a surface relative with touch surface are respectively equipped with a reflection horizon, and the reflection horizon is suitable for the reflective infrared light signal.
In one embodiment of this invention, the first above-mentioned incidence surface is the inclined-plane.
In one embodiment of this invention, above-mentioned Photosensing Units has a sensing area, and the light signal that line source provides produces total reflection in transparent substrates.When touching control contact touch surface, touching control is destroyed the total reflection of part optical signals, so that the part sensing area of Photosensing Units can't receive light signal.
In one embodiment of this invention, above-mentioned optical touch-control device more comprises a processing unit, is electrically connected to Photosensing Units.This handles the position that the unit is suitable for judging according to the position that does not receive the part sensing area of light signal touching control.
In the optical touch-control device of one embodiment of the invention, make the incident angle of light signal incident transparent substrates more consistent owing to have light path adjustment element, thus can increase the efficient of light signal incident transparent substrates, and then improve the light utilization ratio.In addition, in the optical touch-control device of another embodiment of the present invention, owing to use light collecting element to collect light signal, and the light emitting structures of light collecting element can limit the shooting angle and the outgoing scope of light signal, so can increase the efficient of light signal incident light sensing element, and then improve the light utilization ratio.
For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below.
Description of drawings
Fig. 1 is the diagrammatic cross-section of existing a kind of optical touch-control device.
Fig. 2 is the vertical view of a kind of optical touch-control device of one embodiment of the invention.
Fig. 3 is the diagrammatic cross-section along the I-I ' line of Fig. 2.
Fig. 4 is the diagrammatic cross-section of a kind of optical touch-control device of another embodiment of the present invention.
Fig. 5 is the diagrammatic cross-section of a kind of optical touch-control device of another embodiment of the present invention.
Fig. 6 is the schematic top plan view of a kind of optical touch-control device of another embodiment of the present invention.
[main element symbol description]
50,60: touching control 100: optical touch-control device 110: transparent substrates
112: incidence surface 114: exiting surface 116: touch surface
120 line sources 122: light emitting diode 123: light signal
130: Photosensing Units 140: lens combination
200,200a, 200b, 200c: optical touch-control device
210,210 ': transparent substrates 212a: touch surface
212b, 212b ', 212e: first incidence surface (side)
212c, 212d: first exiting surface (side) 212f: surface
220: processing unit 300,300b: light emission and receiving element
310: line source 311: light signal 314: light guide plate
314a: the second incidence surface 314b: second exiting surface 316: cover body
320: light path is adjusted 324: the four exiting surfaces of 322: the four incidence surfaces of element
330: light collecting element 332: surface 333: light emitting structures
340: Photosensing Units 350: lens combination 360: reflecting element
370: refracting element θ: predetermined angular
Embodiment
Fig. 2 is the vertical view of a kind of optical touch-control device of one embodiment of the invention, and Fig. 3 is the diagrammatic cross-section along the I-I ' line of Fig. 2.Please refer to Fig. 2 and Fig. 3, the optical touch-control device 200 of present embodiment comprises emission of a transparent substrates 210 and at least one light and receiving element 300, and Fig. 2 is to be example with two light emissions and receiving element.
Each light emission and receiving element 300 comprise a line source 310, light path adjustment element 320 and a Photosensing Units 330.The line source 310 of each light emission and receiving element 300 is the relative both sides that are positioned at transparent substrates 210 with Photosensing Units 330.In addition, these line sources 310 are disposed at respectively by the first incidence surface 212b, the 212e of transparent substrates 210, and line source 310 is suitable for providing light signal 311 to transparent substrates 210.Each light path is adjusted element 320 and is disposed between corresponding line source 310 and the corresponding first incidence surface 212b/212e.In addition, these light paths adjust elements 320 be suitable for making light signal 311 that line source 310 provides according to a predetermined angle theta from the first incidence surface 212b, 212e incident transparent substrates 210.These Photosensing Units 330 are disposed at respectively by the first exiting surface 212c, the 212d, and Photosensing Units 330 is suitable for receiving the light signal 311 that line source 310 is provided.
Each above-mentioned line source 310 for example comprises a light-emitting component 312, a light guide plate 314 and a cover body 316.Each light guide plate 314 has one second adjacent incidence surface 314a and one second exiting surface 314b.The second exiting surface 314b of these light guide plate 314 is relative with the first incidence surface 212b, 212e respectively.Light-emitting component 312 is disposed at by the second incidence surface 314a, and cover body 316 ccontaining light guide plate 314 and light-emitting component 312.Light-emitting component 312 for example is the infrared light light-emitting component, as light emitting diode, but not as limit.In addition, these light guide plate 314 are suitable for making light-emitting component 312 part optical signals 311 that provides and the part optical signals 311 that reflects from cover body 316 to be passed to the first incidence surface 212b, 212e.
In addition, each light path adjustment element 320 for example has one the 4th relative incidence surface 322 and one the 4th exiting surface 324.The 4th incidence surface 322 is protruding curved surface to line source 310, and the 4th exiting surface 324 is the inclined-plane.The 4th incidence surface 322 usefulness are close to parallel light signal 311 so that the light signal 311 that line source 310 is provided forms, and the 4th exiting surface 324 is in order to change the light path of light signal 311, so that most light signal 311 is complied with described predetermined angle theta from the first incidence surface 212b, 212e incident transparent substrates 210.In other words, by adjustable lay the grain signal 311 incidents of the slope first incidence surface 212b that changes the 4th exiting surface 324, the incident angle of 212e.In addition, it should be noted that described predetermined angle theta and non-limiting single angle, this predetermined angle theta can be to differ in about scope several times between a maximal value and minimum value.
In general environment for use, when contacting, the medium that touch surface 212a contacted for example is not an air by touching control (as finger) as the touch surface 212a of transparent substrates 212.The light signal 311 that line source 310 is provided is behind the first incidence surface 212b, 212e incident transparent substrates 212, can in transparent substrates 212, produce total reflection, and from the first exiting surface 212c, the 212d outgoing of transparent substrates 212, to be received by corresponding Photosensing Units 340.Above-mentioned two line sources, 310 one of them light signal that provided 311 for example are to advance along the direction of paralleled by X axis, and the light signal 311 that another line source 310 is provided for example is to advance along the direction of parallel Y-axis.In addition, when touching control 60 (as the finger, the pen or other objects) when touching touch surface 212a, because the refractive index of touching control 60 is different with the refractive index of air, the light signal 311 that causes being passed to the part touch surface 212a that touching control 60 contacted can't produce total reflection, so that can't be received by Photosensing Units 340.In other words, when touching control 60 touched touch surface 212a, touching control 60 can be destroyed the total reflection of part optical signals 311, so that the part sensing area of Photosensing Units 340 can't receive light signal 311.In addition, the optical touch-control device 200 of present embodiment more comprises a processing unit 220.This handles unit 220 and is electrically connected to Photosensing Units 340, to judge the position of touching control 60 according to the position that does not receive the part sensing area of light signal 311.
In the present embodiment, Photosensing Units 340 can be CMOS Image Sensor (CMOS image sensor), charge coupled cell (charge coupled device, CCD) or other suitable Photosensing Units.In addition, but be positioned at the other Photosensing Units 340 sensing touching control 60 of the first exiting surface 212c, but and be positioned at Photosensing Units 340 sensing touching control 60 by the first exiting surface 212d in the position of Y-axis in the position of X-axis.Therefore, can sense the tram of touching control 60 by this two Photosensing Units 340 at touch surface 212a.
The optical touch-control device 200 of present embodiment makes light signal 311 according to predetermined angle theta incident transparent substrates 210 because of using light path to adjust element 320, so can increase the efficient of light signal 311 incident transparent substrates 210, and then improve the light utilization ratio of the optical touch-control device 200 of present embodiment.
Though present embodiment is to be example with emission of two light and receiving element 300, in another embodiment, also visual actual demand, and the quantity of light emission and receiving element 300 is adjusted to one or more.In addition, in order to promote the reflectivity of light signal 311, one reflection horizon (figure does not show) can be set respectively at touch surface 212a and a surperficial 212f relative with touch surface 212a.At light-emitting component 312 is among the embodiment of infrared light light-emitting component, and each reflection horizon for example is to be used for the reflective infrared light signal.
What deserves to be mentioned is, in order further to promote the light utilization ratio of the optical touch-control device 200 of present embodiment, emission of each light and receiving element 300 can more comprise a light collecting element 330, are disposed between Photosensing Units 340 and the corresponding first exiting surface 212c/212d.Each light collecting element 330 is suitable for receiving the light signal 311 from the first exiting surface 212c/212d outgoing, and the surface 332 away from transparent substrates 210 of light collecting element 330 is provided with a light emitting structures 333, so that light signal 311 is passed to Photosensing Units 340 via light emitting structures 333.This light emitting structures 333 can be optical grating construction or cloudy surface structure, but not as limit.
Hold above-mentionedly, light collecting element 330 is suitable for receiving the light signal 311 from exiting surface 214 outgoing, and light emitting structures 333 is suitable for limiting the shooting angle and the outgoing scope of light signal 311, to promote the receiving efficiency of Photosensing Units 340.So, can promote the light utilization ratio of the optical touch-control device 200 of present embodiment, and improve the sensing effect of Photosensing Units 340.In addition, between the Photosensing Units 340 of emission of each light and receiving element 300 and light collecting element 330, a lens combination 350 can be set.This lens combination 350 can converge to Photosensing Units 340 with light signal 311, with the sensing effect of further lifting Photosensing Units 340.
Be noted that when the optical touch-control device 200 of present embodiment was applied to touch control display apparatus, transparent substrates 210 can integrate with a substrate of the display panel of touch control display apparatus.That is transparent substrates 210 can be the substrate of display panel.In another embodiment, emission of the light of optical touch-control device and receiving element also can omit light path and adjust element 320, and only promote the light utilization ratio of optical touch-control device by light collecting element 330.
Fig. 4 is the diagrammatic cross-section of a kind of optical touch-control device of another embodiment of the present invention.Please refer to Fig. 4, the optical touch-control device 200a of present embodiment is similar to above-mentioned optical touch-control device 200, and each first incidence surface (as the first incidence surface 212b ') that difference is in the transparent substrates 210 ' of optical touch-control device 200a is the inclined-plane.The slope on this inclined-plane is the light path that cooperates light signal 311, so that light signal 311 near vertical incident incidence surface 212b '.So, can increase the efficient of light signal 311 incident transparent substrates 210 ', with the light utilization ratio of further lifting optical touch-control device 200a.
Fig. 5 is the diagrammatic cross-section of a kind of optical touch-control device of another embodiment of the present invention.Please refer to Fig. 5, the optical touch-control device 200b of present embodiment is similar to above-mentioned optical touch-control device 200, and difference is in the lens combination 350 of having omitted Fig. 3 in each light emission of optical touch-control device 200b and receiving element 300b.In addition, each light emission and the receiving element 300b of optical touch-control device 200b more comprise a reflecting element 360, are disposed between Photosensing Units 340 and the light collecting element 330.This reflecting element 360 is in order to reflex to Photosensing Units 340 with light signal 311.Particularly, reflecting element 360 for example is a prism, and it has one the 3rd incidence surface 362, a reflecting surface 364 and one the 3rd exiting surface 366.The 3rd incidence surface 362 is relative with light collecting element 330, and the 3rd exiting surface 366 is relative with Photosensing Units 340, and reflecting surface 364 is connected between the 3rd exiting surface 366 and the 3rd incidence surface 362.In addition, in another embodiment, the lens combination 350 of Fig. 3 also can be set between reflecting element 360 and the light sensing unit 340.
Fig. 6 is the schematic top plan view of a kind of optical touch-control device of another embodiment of the present invention.Please refer to Fig. 6, optical touch-control device 200c is similar to above-mentioned optical touch-control device 200b, difference is in each light emission and the receiving element 300c of optical touch-control device 200c and more comprises a refracting element 370, be disposed between reflecting element 360 and the light collecting element 330, and refracting element 370 is suitable for light signal 311 is refracted to reflecting element 360.In addition, in another embodiment, but also the 3rd incidence surface 362 of contact reflex element 360 of refracting element 370.
The advantage of above-mentioned optical touch- control device 200b, 200c is similar to the advantage of optical touch-control device 200, will no longer repeat at this.
In sum, optical touch-control device of the present invention have at least following advantage one of them:
1. in one embodiment,, optical touch-control device make the incident angle of light signal incident transparent substrates more consistent because having light path adjustment element, thus can increase the efficient of light signal incident transparent substrates, and then improve the light utilization ratio.
2. in another embodiment, because optical touch-control device has light collecting element, and the light emitting structures of light collecting element can limit the shooting angle and the outgoing scope of light signal, thus can increase the efficient of light signal incident light sensing element, and then improve the light utilization ratio.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; the persond having ordinary knowledge in the technical field of the present invention; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when the content that be summarized with claims.
Claims (21)
1. optical touch-control device is characterized in that comprising:
One transparent substrates has a touch surface and a plurality of sides that are connected this touch surface, those sides one of them is one first incidence surface at least, those sides one of them is one first exiting surface relative with this first incidence surface at least;
At least one light emission and receiving element, each light emission and receiving element comprise:
One line source is disposed at by this first incidence surface of this transparent substrates, and this line source is suitable for providing light signal to this transparent substrates;
One light path is adjusted element, is disposed between this line source and this first incidence surface, and the light signal that this light path adjustment element is suitable for this line source is provided is complied with a predetermined angular from this this transparent substrates of first incidence surface incident; And
One Photosensing Units is disposed at by this first exiting surface of this transparent substrates, and this line source and this Photosensing Units are positioned at the relative both sides of this transparent substrates, and this Photosensing Units is suitable for receiving the light signal that this line source provides.
2. optical touch-control device as claimed in claim 1 is characterized in that: this line source comprises:
One light guide plate has one second adjacent incidence surface and one second exiting surface, and this second exiting surface is relative with this light path adjustment element;
One light-emitting component is disposed at by this second incidence surface, is suitable for launching infrared signal; And
One cover body, ccontaining this light guide plate and this light-emitting component.
3. optical touch-control device as claimed in claim 1, it is characterized in that: each light emission and receiving element more comprise a light collecting element, be disposed between this Photosensing Units and this first exiting surface, this light collecting element is suitable for receiving the light signal from this first exiting surface outgoing, and the surface away from this transparent substrates of this light collecting element is provided with a light emitting structures, so that light signal is passed to this Photosensing Units via this light emitting structures, this light emitting structures comprises optical grating construction or cloudy surface structure.
4. optical touch-control device as claimed in claim 3 is characterized in that: each light emission and receiving element more comprise a lens combination, are disposed between this Photosensing Units and this light collecting element, and this lens combination is suitable for light signal is converged to this Photosensing Units.
5. optical touch-control device as claimed in claim 3, it is characterized in that: each light emission and receiving element more comprise a reflecting element, be disposed between this Photosensing Units and this light collecting element, this reflecting element is suitable for light signal is reflexed to this Photosensing Units, this reflecting element of each light emission and receiving element comprises a prism, this prism has one the 3rd incidence surface, one reflecting surface and one the 3rd exiting surface, the 3rd incidence surface is relative with this light collecting element, the 3rd exiting surface is relative with this Photosensing Units, and this reflecting surface is connected between the 3rd exiting surface and the 3rd incidence surface.
6. optical touch-control device as claimed in claim 5 is characterized in that: each light emission and receiving element more comprise a refracting element, are disposed between this reflecting element and this light collecting element, and this refracting element is suitable for light signal is refracted to this reflecting element.
7. optical touch-control device as claimed in claim 1 is characterized in that: each light path is adjusted element and is had one the 4th relative incidence surface and one the 4th exiting surface, and the 4th incidence surface is protruding curved surface to this line source, and the 4th exiting surface is the inclined-plane.
8. optical touch-control device as claimed in claim 1, it is characterized in that: this transparent substrates is a substrate of a display panel, this touch surface and a surface relative with this touch surface are respectively equipped with a reflection horizon, and those reflection horizon are suitable for the reflective infrared light signal.
9. optical touch-control device as claimed in claim 1 is characterized in that: this first incidence surface is the inclined-plane.
10. optical touch-control device as claimed in claim 1, it is characterized in that: this Photosensing Units has a sensing area, and the light signal that this line source provides produces total reflection in this transparent substrates, when a touching control contacts this touch surface, this touching control is destroyed the total reflection of part optical signals, so that this sensing area of the part of this Photosensing Units can't receive light signal.
11. optical touch-control device as claimed in claim 10, it is characterized in that: more comprise a processing unit, be electrically connected to this Photosensing Units, this processing unit is suitable for judging according to the position that does not receive this sensing area of part of light signal the position of this touching control.
12. an optical touch-control device is characterized in that comprising:
One transparent substrates has a touch surface and a plurality of sides that are connected this touch surface, those sides one of them is one first incidence surface at least, those sides one of them is one first exiting surface relative with this first incidence surface at least;
At least one light emission and receiving element, each light emission and receiving element comprise:
One line source is disposed at by this first incidence surface of this transparent substrates, and this line source is suitable for providing light signal to this transparent substrates;
One Photosensing Units is disposed at by this first exiting surface of this transparent substrates, and this line source and this Photosensing Units are positioned at the relative both sides of this transparent substrates, and this Photosensing Units is suitable for receiving the light signal that this line source provides; And
One light collecting element, be disposed between this Photosensing Units and this first exiting surface, this light collecting element is suitable for receiving the light signal from this first exiting surface outgoing, and the surface away from this transparent substrates of this light collecting element is provided with a light emitting structures, so that light signal is passed to this Photosensing Units via this light emitting structures.
13. optical touch-control device as claimed in claim 12 is characterized in that: each line source comprises:
One light guide plate has one second adjacent incidence surface and one second exiting surface, and this second exiting surface is relative with this light path adjustment element;
One light-emitting component is disposed at by this second incidence surface, is suitable for launching infrared signal; And
One cover body, ccontaining this light guide plate and this light-emitting component.
14. optical touch-control device as claimed in claim 12 is characterized in that: this light emitting structures comprises optical grating construction or cloudy surface structure.
15. optical touch-control device as claimed in claim 12 is characterized in that: each light emission and receiving element more comprise a lens combination, are disposed between this Photosensing Units and this light collecting element, and this lens combination is suitable for light signal is converged to this Photosensing Units.
16. optical touch-control device as claimed in claim 12, it is characterized in that: each light emission and receiving element more comprise a reflecting element, be disposed between this Photosensing Units and this light collecting element, this reflecting element is suitable for light signal is reflexed to this Photosensing Units, this reflecting element comprises a prism, this prism has one the 3rd incidence surface, a reflecting surface and one the 3rd exiting surface, the 3rd incidence surface is relative with this light collecting element, the 3rd exiting surface is relative with this Photosensing Units, and this reflecting surface is connected between the 3rd exiting surface and the 3rd incidence surface.
17. optical touch-control device as claimed in claim 16 is characterized in that: each light emission and receiving element more comprise a refracting element, are disposed between this reflecting element and this light collecting element, and this refracting element is suitable for light signal is refracted to this reflecting element.
18. optical touch-control device as claimed in claim 12, it is characterized in that: this transparent substrates is a substrate of a display panel, this touch surface and a surface relative with this touch surface are respectively equipped with a reflection horizon, and those reflection horizon are suitable for the reflective infrared light signal.
19. optical touch-control device as claimed in claim 12 is characterized in that: this first incidence surface is the inclined-plane.
20. optical touch-control device as claimed in claim 12, it is characterized in that: this Photosensing Units has a sensing area, and the light signal that this line source provides produces total reflection in this transparent substrates, when a touching control contacts this touch surface, this touching control is destroyed the total reflection of part optical signals, so that this sensing area of the part of this Photosensing Units can't receive light signal.
21. optical touch-control device as claimed in claim 20, it is characterized in that: more comprise a processing unit, be electrically connected to this Photosensing Units, this processing unit is suitable for judging according to the position that does not receive this sensing area of part of light signal the position of this touching control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010228769 CN102200864B (en) | 2010-03-26 | 2010-07-16 | Optical touch device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010133374.2 | 2010-03-26 | ||
| CN201010133374 | 2010-03-26 | ||
| CN 201010228769 CN102200864B (en) | 2010-03-26 | 2010-07-16 | Optical touch device |
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| CN102200864A true CN102200864A (en) | 2011-09-28 |
| CN102200864B CN102200864B (en) | 2013-08-14 |
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| CN 201010228769 Expired - Fee Related CN102200864B (en) | 2010-03-26 | 2010-07-16 | Optical touch device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104598081A (en) * | 2013-10-30 | 2015-05-06 | 李娜 | Touch screen realized based on total reflection wave technology and touch display device with same |
| TWI496056B (en) * | 2013-03-15 | 2015-08-11 | Wistron Corp | Touch control apparatus and associated selecting method |
| CN105096576A (en) * | 2014-05-23 | 2015-11-25 | 纬创资通股份有限公司 | Signal receiving module and display device |
| CN105640491A (en) * | 2014-10-31 | 2016-06-08 | 财团法人工业技术研究院 | Optical sensing device and measuring method thereof |
| CN109635794A (en) * | 2017-10-05 | 2019-04-16 | 印芯科技股份有限公司 | Optical recognition module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1853160A (en) * | 2003-09-22 | 2006-10-25 | 皇家飞利浦电子股份有限公司 | Touch input screen using a light guide |
| CN101424993A (en) * | 2007-11-02 | 2009-05-06 | 群康科技(深圳)有限公司 | Infrared touch control system |
| US20100045634A1 (en) * | 2008-08-21 | 2010-02-25 | Tpk Touch Solutions Inc. | Optical diode laser touch-control device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1853160A (en) * | 2003-09-22 | 2006-10-25 | 皇家飞利浦电子股份有限公司 | Touch input screen using a light guide |
| CN101424993A (en) * | 2007-11-02 | 2009-05-06 | 群康科技(深圳)有限公司 | Infrared touch control system |
| US20100045634A1 (en) * | 2008-08-21 | 2010-02-25 | Tpk Touch Solutions Inc. | Optical diode laser touch-control device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI496056B (en) * | 2013-03-15 | 2015-08-11 | Wistron Corp | Touch control apparatus and associated selecting method |
| CN104598081A (en) * | 2013-10-30 | 2015-05-06 | 李娜 | Touch screen realized based on total reflection wave technology and touch display device with same |
| CN105096576A (en) * | 2014-05-23 | 2015-11-25 | 纬创资通股份有限公司 | Signal receiving module and display device |
| CN105096576B (en) * | 2014-05-23 | 2019-07-12 | 纬创资通股份有限公司 | Signal receiving module and display device |
| CN105640491A (en) * | 2014-10-31 | 2016-06-08 | 财团法人工业技术研究院 | Optical sensing device and measuring method thereof |
| CN109635794A (en) * | 2017-10-05 | 2019-04-16 | 印芯科技股份有限公司 | Optical recognition module |
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| Publication number | Publication date |
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| CN102200864B (en) | 2013-08-14 |
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