CN103107180A - Organic electroluminescence display device and production method thereof - Google Patents
Organic electroluminescence display device and production method thereof Download PDFInfo
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Abstract
The invention provides an organic electroluminescence display device and a production method thereof. The organic electroluminescence display device at least comprises a first component and a second component. The first component is provided with a first substrate and an organic electroluminescence unit formed on the first substrate. The second component is assembled opposite to the first component and comprises a second substrate, filter layers and shading pattern layers. The filter layers are located on the second substrate and provided with a plurality of color filtering areas of different colors. The shading pattern layers are located on the filter layers and located between the color filtering areas, wherein some shading pattern layers are contacted with the first component so as to maintain the gap between the first component and the second component.
Description
Technical field
The present invention relates to a kind of display unit and manufacture method thereof, and particularly relate to a kind of organic electroluminescence display device and method of manufacturing same and manufacture method thereof.
Background technology
Flat display apparatus such as liquid crystal indicator (Liquid Crystal Display Device, LCD), plasm display device (Plasma Display Panel, PDP) or organic electroluminescence display device and method of manufacturing same (Organic Electroluminescent Display, OLED) CRT display is come compactly more in the past, therefore become gradually common now flat display apparatus.Wherein, organic electroluminescence display device and method of manufacturing same has more frivolous, deflection, portable, full-color, high brightness, power saving, the visual angle is broad and the advantage such as high answer speed.
At present monochromatic OLED display technology has been tending towards ripe, but be considered as flat-panel screens of future generation with and the level used, the development Full-color OLED trend that is inevitable.The present true color technology of OLED has three kinds: 1. three of full-color required RGB pixel (subpixel) are reached by three elements independently respectively.2. blue light OLED is utilized color conversion layer (color change medium, CCM) to convert the RGB color to.3. white light OLED is utilized colored filter (color filter) to convert the RGB color to.Three kinds of methods respectively have pluses and minuses.The third method utilizes the white light element to add that colored filter makes Full-color OLED, because the LCD industry uses the technology of colored filter very ripe, as long as find out the RGB filter that is fit to white light OLED, the OLED that is transferred to that this technology should be very fast uses.And the relatively easy white light OLED of element technique adds that colored filter just becomes a possibility mode that reduces the Full-color OLED manufacturing cost.
Fig. 1 illustrates a kind of part sectioned view of known organic electroluminescence display device and method of manufacturing same.Organic electroluminescence display device and method of manufacturing same is mainly to be formed by organic electroluminescent parts (OLED assembly) 10 and 20 pairs of groups of colorized optical filtering parts (CF assembly), and between two parts with sept 30 space distance controls.Organic electroluminescent parts 10 comprise the first substrate 101 with film crystal pipe unit, organic electroluminescence cell 103 is for example to be folded between two electrodes (for example reflecting electrode and through electrode, be not shown in figure), be formed on the first substrate 101 of tool film crystal pipe unit.The method for making of known colorized optical filtering parts 20 is for example to form shielding pattern layer 203 as black matrix" (BM) with the gold-tinted photoetching process on the glass substrate 201 of completing pre-treatment (as cleaning up), form again chromatic filter layer 205, form the color layer of redness (CF-R), green (CF-G) and blue (CF-B) as gradation; Form again afterwards cover layer (overcoat, OC) 207, cover chromatic filter layer 205 with whole.Because red, green with blue color layer thickness is not identical, the formation of cover layer 207 can make it reach planarization, and sept 30 can be formed on cover layer 207, after organic electroluminescent parts 10 and 20 pairs of groups of colorized optical filtering parts, sept 30 can be kept the spacing (cell gap) of two parts.Yet the existence of cover layer 207 and sept 30 has increased the integral thickness of display unit, and the thicker angle that it produces colour cast of display unit is less.In addition, if sept is arranged on by redness, green or one of them color of blue color layer, for sept is set, must increase the width of the black matrix area of this color, the viewing area of this color thereby dwindle, and sacrificed the aperture opening ratio of this color.
Summary of the invention
Because above-mentioned problem the invention provides a kind of organic electroluminescence display device and method of manufacturing same and manufacture method thereof, can reduce integral thickness, the improvement colour cast of display unit, and simplify simultaneously technique.
According to an aspect of the present invention, propose a kind of organic electroluminescence display device and method of manufacturing same and comprise at least: first component has first substrate and the organic electroluminescence cell that is formed on first substrate; Second component to group, and comprises second substrate, filter layer and shielding pattern layer with first component.Filter layer is positioned on second substrate and has the colorized optical filtering district of a plurality of different colours.Shielding pattern layer is on filter layer and between these colorized optical filterings districts.Wherein, the part shielding pattern layer contacts with first component, to keep the spacing (cell gap) between first component and second component.
According to a further aspect in the invention, propose a kind of colorized optical filtering parts, be applied in organic electroluminescence display device and method of manufacturing same, the colorized optical filtering parts comprise substrate at least; Filter layer is positioned on substrate and has the colorized optical filtering district of a plurality of different colours; And shielding pattern layer, on filter layer and between these colorized optical filterings districts, wherein the part shielding pattern layer is kept the spacing (cell gap) of organic electroluminescence display device and method of manufacturing same.
In accordance with a further aspect of the present invention, propose a kind of manufacture method of organic electroluminescence display device and method of manufacturing same, comprise at least:
First component is provided, comprises that first substrate and organic electroluminescence cell are formed on first substrate;
Second component is provided, comprises second substrate, filter layer and shielding pattern layer, filter layer is formed on second substrate and has a plurality of colorized optical filterings districts, and shielding pattern layer is on filter layer and corresponding between these colorized optical filterings districts;
To group first component and second component, and the part shielding pattern layer contacts with first component, to keep the spacing between first component and second component.
For foregoing of the present invention can be become apparent, embodiment cited below particularly, and cooperation accompanying drawing are described in detail below:
Description of drawings
Fig. 1 illustrates a kind of part sectioned view of known organic electroluminescence display device and method of manufacturing same.
Fig. 2 A illustrates the vertical view according to the organic electroluminescence display device and method of manufacturing same of first embodiment of the invention.
Fig. 2 B illustrates the display unit of Fig. 2 A along the generalized section of hatching 2B-2B '.
Fig. 3 illustrates the vertical view according to the another kind of organic electroluminescence display device and method of manufacturing same of first embodiment of the invention.
Fig. 4 A illustrates the vertical view according to the organic electroluminescence display device and method of manufacturing same of second embodiment of the invention.
Fig. 4 B illustrates the display unit of Fig. 4 A along the generalized section of hatching 4B-4B '.
Fig. 5 illustrates the vertical view according to the another kind of organic electroluminescence display device and method of manufacturing same of second embodiment of the invention.
Fig. 6 A illustrates the vertical view according to the organic electroluminescence display device and method of manufacturing same of third embodiment of the invention.
Fig. 6 B illustrates the display unit of Fig. 6 A along the generalized section of hatching 6B-6B '.
Description of reference numerals
10: the organic electroluminescent parts
20: the colorized optical filtering parts
201: glass substrate
203: shielding pattern layer
205: chromatic filter layer
207: cover layer
30: sept
40,70: first component
101,401,701: first substrate
103,403,703: organic electroluminescence cell
50,80: second component
501,801: second substrate
505,805: filter layer
5051,8056: red sub-filter area
5052,8058: green sub-filter area
5053,8059: white sub-filter area
5054,8057: blue sub-filter area
506,506 ', 506a, 806,806a: shielding pattern layer
606,606 ': sept
62,92: packed layer
D: spacing
d
R: the thickness of red sub-filter area
d
G: the thickness of green sub-filter area
d
B: the thickness of blue sub-filter area
d
K: the thickness of shielding pattern layer
d
S: the thickness of sept
Embodiment
Following examples propose a kind of organic electroluminescence display device and method of manufacturing same and manufacture method thereof, the characteristics of the spacing (cell gap) of utilizing shielding pattern layer to have concurrently simultaneously to keep display unit, with integral thickness, the improvement colour cast that reduces display unit, and simplify simultaneously technique.Yet the thin section structure that embodiment proposes and processing step be the use for illustrating only, is not that the scope that wish of the present invention is protected limits.
The organic electroluminescence display device and method of manufacturing same of embodiment is formed group by first component and second component, and first component is for example organic electroluminescent parts (OLED assembly), and second component is for example colorized optical filtering parts (CF assembly).During practical application, the colorized optical filtering district of colorized optical filtering parts can be arranged in straight strip type array (strip-type color filter array) as shown in first and second embodiment, or being arranged in square array (quad-type color filter array) as the 3rd embodiment, the present invention also seldom limits this.
The first embodiment
Fig. 2 A illustrates the vertical view according to a kind of organic electroluminescence display device and method of manufacturing same of first embodiment of the invention.Fig. 2 B illustrates the display unit of Fig. 2 A along the generalized section of hatching 2B-2B '.Please be simultaneously with reference to Fig. 2 A and Fig. 2 B.Organic electroluminescence display device and method of manufacturing same comprises first component 40 and second component 50, and first component 40 is for example that the organic electroluminescent parts have first substrate 401 and organic electroluminescence cell 403 is formed on first substrate 401.Second component 50 is for example that the colorized optical filtering parts comprise second substrate 501, filter layer 505 and shielding pattern layer 506.
Wherein, filter layer 505 is formed on second substrate 501 and has the colorized optical filtering district of a plurality of different colours, be for example red sub-filter area 5051, green sub-filter area 5052, white sub-filter area 5053 and blue sub-filter area 5054, and each pixel region comprise that each sub-filter area 5051 of redness, green sub-filter area 5052, white sub-filter area 5053 and blue sub-filter area 5054 strip ground form side by side.Shielding pattern layer 506 be formed at second substrate 501 places and be positioned at these colorized optical filterings districts around.As shown in Fig. 2 B, in the organic electroluminescence display device and method of manufacturing same of embodiment, the part 506a of shielding pattern layer 506 contacts with first component 40, to keep spacing (cell gap) D between first component 40 and second component 50.
Because the thickness of red, green with blue sub-filter area is in fact not identical, as shown in Fig. 2 B, the thickness d of general blue sub-filter area 5054
BThe thickest, the thickness d of green sub-filter area 5052
GInferior, the thickness d of red sub-filter area 5051
RThe thinnest, the part 506a that the shielding pattern layer 506 of embodiment contacts with first component 40 can be accordingly at the sub-filter area 5054 of blueness to keep the spacing between first component 40 and second component 50, for example between the sub-filter area 5054 of blueness and adjacent other colors filter area 5053 as child in white, but not as limit.At this moment, the space D between first component 40 and second component 50 is the thickness d of blue sub-filter area 5054
BThickness d with the shielding pattern layer 506a at place
KSummation.
Moreover the organic electroluminescence display device and method of manufacturing same of embodiment comprises that also packed layer (filler) 62 is disposed between first component 40 and second component 50, and fills up packed layer 62 between filter layer 505 and shielding pattern layer 506.Can utilize light source to packed layer harden (curing) after packed layer 62 (being for example colloid) configuration, to fill up the space (air gap) between first component 40 and second component 50, so just can not cause the residual of air or aqueous vapor, can increase stability and the useful life of organic electroluminescence cell in parts, also can increase the intensity of whole Organnic electroluminescent device.
In embodiment, the material of shielding pattern layer 506 is for example black matrix" (BM), its formation is for example to rotate mode painting black photoresist (the Photo Resist that is coated with, PR), again via pre-baked (Pre Bake), exposure (Exposure), develop (Develop), hard roasting (Post Bake), and complete black matrix" (BM).The material of packed layer 62 is for example epoxy resin (epoxy), acrylate (acrylic), polyester (poly-ester) or polyurethane (Polyurethane), yet during practical application, the material of shielding pattern layer and packed layer is also looked application feature and is done suitably to select, and the present invention is not restricted this more.
Although as shown in Fig. 2 A, shielding pattern layer 506 is around the colorized optical filtering district, yet embodiment is not limited to this, and shielding pattern layer also can be formed between these colorized optical filterings districts, reaches shading and avoids the effect of adjacent colorized optical filtering district mixed light to get final product.Fig. 3 illustrates the vertical view according to the another kind of organic electroluminescence display device and method of manufacturing same of first embodiment of the invention.The generalized section of the display unit of Fig. 3 also can be with reference to Fig. 2 B.As shown in Figure 3, shielding pattern layer 506 ' is between two adjacent filter areas, between filter area 5051 as child in redness and green sub-filter area 5052, between green sub-filter area 5052 and white sub-filter area 5053, between white sub-filter area 5053 and blue sub-filter area 5054.
Compared to known structure (as Fig. 1) with tectal organic electroluminescence display device and method of manufacturing same, the organic electroluminescence display device and method of manufacturing same of embodiment utilizes the part of shielding pattern layer to replace the use of traditional sept, also omitted cover layer, the integral thickness that can significantly reduce display unit (is about 1.4 μ m as black matrix" thickness, and traditional photoresist sept thickness is about 2 μ m), and simplify simultaneously technique.Moreover the display unit after attenuate also can make the angle that produces colour cast become large, promotes display quality.
The second embodiment
Fig. 4 A illustrates the vertical view according to a kind of organic electroluminescence display device and method of manufacturing same of second embodiment of the invention.Fig. 4 B illustrates the display unit of Fig. 4 A along the generalized section of hatching 4B-4B '.Please be simultaneously with reference to Fig. 4 A and Fig. 4 B.Element identical with the first embodiment in the second embodiment is continued to use same element numbers, and the related description of similar elements please refer to aforementionedly, does not repeat them here.
The organic electroluminescence display device and method of manufacturing same of the second embodiment more forms sept (spacers) 606 except having equally first component 40 and second component 50, filter layer 505 with the first embodiment and being positioned at shielding pattern layer 506 on filter layer 505 when forming shielding pattern layer 506.After 50 pairs of groups of first component 40 and second component, shielding pattern layer 506a except part, sept 606 also can contact with first component 40, to keep space D between first component 40 and second component 50 (so the filter layer 505 of the bottom of sept 606 contact second component 50, its top contacts first component 40).As shown in Fig. 3 B, the sept 606 of embodiment is for example the corner that is positioned at blue sub-filter area 5054.At this moment, the space D between first component 40 and second component 50 is also the thickness d of blue sub-filter area 5054
BThickness d with sept 606
SSummation.
Same, although as shown in Fig. 4 A, shielding pattern layer 506 is around the colorized optical filtering district, yet embodiment is not limited to this, shielding pattern layer also can be formed between these colorized optical filterings districts, as shown in Figure 5, it is the vertical view according to the another kind of organic electroluminescence display device and method of manufacturing same of second embodiment of the invention.The generalized section of the display unit of Fig. 5 also can be with reference to Fig. 4 B.As shown in Figure 5, shielding pattern layer 506 ' is between two adjacent filter areas, between filter area 5051 as child in redness and green sub-filter area 5052, between green sub-filter area 5052 and white sub-filter area 5053, between white sub-filter area 5053 and blue sub-filter area 5054; Sept 606 ' is for example the corner that is positioned at blue sub-filter area 5054.
The 3rd embodiment
Fig. 6 A illustrates the vertical view according to the organic electroluminescence display device and method of manufacturing same of third embodiment of the invention.Fig. 6 B illustrates the display unit of Fig. 6 A along the generalized section of hatching 6B-6B '.Please be simultaneously with reference to Fig. 6 A and Fig. 6 B.
Similarly, organic electroluminescence display device and method of manufacturing same comprise first component 70, second component 80 and be disposed at first component 70 and second component 80 between packed layer 92.First component 70 is for example the organic electroluminescent parts, and these organic electroluminescent parts have first substrate 701 and the organic electroluminescence cell 703 that is formed on first substrate 701.Second component 80 is for example that the colorized optical filtering parts comprise second substrate 801, filter layer 805 and shielding pattern layer 806.Wherein, filter layer 805 is formed on second substrate 801 and has the colorized optical filtering district of a plurality of different colours, for example red sub-filter area 8056, blue sub-filter area 8057, green sub-filter area 8058 and white sub-filter area 8059, and each dice filter area of each pixel region is arranged in square array (quad-type color filter array).Shielding pattern layer 806 is formed at second substrate 801 places and between these colorized optical filterings districts, for example around these colorized optical filterings districts.As shown in Fig. 6 B, in the organic electroluminescence display device and method of manufacturing same of embodiment, a part of 806a of shielding pattern layer contacts with first component 70, to keep the space D between first component 70 and second component 80.In embodiment, the part 806a that shielding pattern layer 806 contacts with first component 70 can be positioned at blue sub-filter area 8057 places accordingly, is for example between the sub-filter area 8057 of blueness and adjacent red sub-filter area 8056, but not as limit.
Manufacture method
Below propose the manufacture method of a kind of organic electroluminescence display device and method of manufacturing same of embodiment, yet these steps use for illustrating only is not to limit the present invention.Persons skilled in the art are worked as can need to be modified or be changed these steps according to actual exemplifying embodiment.Please be simultaneously with reference to Fig. 2 B, with the manufacture method of explanation embodiment.
At first, provide first component 40 and second component 50.First component 40 is for example organic electroluminescent parts (OLED assembly), comprises substrate 401 and organic electroluminescence cell 403; Second component 50 is for example colorized optical filtering parts (CF assembly), comprises second substrate 501, filter layer 505 and shielding pattern layer 506.
The manufacture method of second component 50 is for example: second substrate 501 is provided, and forms filter layer 505 on second substrate 501, and filter layer 505 has the colorized optical filtering district (as red, green, white and blue sub-filter area) of a plurality of different colours.Afterwards, then form shielding pattern layer 506 on filter layer 505 and be positioned at accordingly these colorized optical filterings districts around.
Then, to group first component 40 and second component 50, a part of 506a of shielding pattern layer can be contacted with first component 40, to keep the space D between first component 40 and second component 50.Wherein, a part of 506a of shielding pattern layer can be positioned at blue sub-filter area place as shown in the Examples, for example be positioned between the sub-filter area of blue sub-filter area and adjacent other colors, but not as limit.
Afterwards, fill up packed layer 62 between first component 40 and second component 50, and sclerosis packed layer 62, wherein fill up packed layer 62 between filter layer 505 and shielding pattern layer 506.
In addition, also can when forming shielding pattern layer 506 in the step of filter layer 505, form simultaneously a plurality of septs 606 on filter layer 505, as shown in the second embodiment (Fig. 4 B).Sept 606 and shielding pattern layer 506 same materials for example are all black matrix".Sept 606 for example is formed at locating of these blue sub-filter areas accordingly on every side.Therefore, except the shielding pattern layer 506a of part, sept 606 also can contact with first component 40, to keep the space D between first component 40 and second component 50.
Comprehensively above-mentioned, in the organic electroluminescence display device and method of manufacturing same of embodiment, the shielding pattern layer of colorized optical filtering parts is formed on filter layer, and the part shielding pattern layer contacts with the organic electroluminescent parts, to keep the spacing (cell gap) between two parts, not only omitted traditional cover layer and photoresist sept, simplify the manufacturing process of display unit, also the integral thickness of significantly thinning display unit, improved the colour cast situation.
In sum, although the present invention discloses as above with embodiment, so it is not to limit the present invention.Those skilled in the art in the technical field of the invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is as the criterion when looking the claim person of defining.
Claims (21)
1. organic electroluminescence display device and method of manufacturing same comprises at least:
First component has first substrate and the organic electroluminescence cell that is formed on this first substrate;
Second component, to group, this second component comprises with this first component:
Second substrate;
Filter layer is positioned on this second substrate and has the colorized optical filtering district of a plurality of different colours; With
Shielding pattern layer, on this filter layer and between this a plurality of colorized optical filterings districts,
Wherein, this shielding pattern layer of part contacts with this first component, to keep the spacing between this first component and this second component.
2. organic electroluminescence display device and method of manufacturing same as claimed in claim 1, wherein this a plurality of colorized optical filterings districts comprises the sub-filter area of a plurality of redness, the sub-filter area of a plurality of green, the sub-filter area of a plurality of blueness and the sub-filter area of a plurality of white, and each pixel region comprises each redness, green, blueness and white sub-filter area.
3. organic electroluminescence display device and method of manufacturing same as claimed in claim 2, this shielding pattern layer of part that wherein contacts with this first component is positioned at the sub-filter area of these a plurality of bluenesss accordingly.
4. organic electroluminescence display device and method of manufacturing same as claimed in claim 2, wherein this redness of each pixel region, green, blueness and white sub-filter area are arranged in straight strip type array or square array, and this shielding pattern layer of part that contacts with this first component is between the sub-filter area of these a plurality of bluenesss and the adjacent sub-filter area of other colors.
5. organic electroluminescence display device and method of manufacturing same as claimed in claim 2, also comprise a plurality of septs, and these a plurality of septs are positioned on this filter layer and with this first component and contact, and these a plurality of septs are identical with this light-shielding pattern layer material.
6. organic electroluminescence display device and method of manufacturing same as claimed in claim 5, wherein these a plurality of septs be positioned at accordingly the sub-filter area of these a plurality of bluenesss around locate.
7. organic electroluminescence display device and method of manufacturing same as claimed in claim 1, wherein this shielding pattern layer be positioned at this a plurality of colorized optical filterings districts around.
8. organic electroluminescence display device and method of manufacturing same as claimed in claim 1, wherein this shielding pattern layer is black matrix".
9. organic electroluminescence display device and method of manufacturing same as claimed in claim 1, also comprise packed layer, and this packed layer and fills up this packed layer between this filter layer and this shielding pattern layer between this first component and this second component.
10. colorized optical filtering parts, be applied in organic electroluminescence display device and method of manufacturing same, and these colorized optical filtering parts comprise at least:
Substrate;
Filter layer is positioned on this substrate and has the colorized optical filtering district of a plurality of different colours; With
Shielding pattern layer, on this filter layer and between this a plurality of colorized optical filterings districts, wherein this shielding pattern layer of part is kept the spacing of this organic electroluminescence display device and method of manufacturing same.
11. colorized optical filtering parts as claimed in claim 10, wherein this a plurality of colorized optical filterings districts comprises the sub-filter area of a plurality of redness, the sub-filter area of a plurality of green, the sub-filter area of a plurality of blueness and the sub-filter area of a plurality of white, and each pixel region comprises each redness, green, blueness and white sub-filter area.
12. colorized optical filtering parts as claimed in claim 11, wherein this redness of each pixel region, green, blueness and white sub-filter area are arranged in straight strip type array or square array, and this shielding pattern layer of part that contacts with this first component is between the sub-filter area of these a plurality of bluenesss and the adjacent sub-filter area of other colors.
13. colorized optical filtering parts as claimed in claim 11 also comprise a plurality of septs, these a plurality of septs are positioned on this filter layer, and these a plurality of septs are identical with this light-shielding pattern layer material.
14. colorized optical filtering parts as claimed in claim 13, wherein these a plurality of septs are positioned at locating of the sub-filter area of these a plurality of bluenesss accordingly on every side.
15. colorized optical filtering parts as claimed in claim 10, wherein this shielding pattern layer be positioned at this a plurality of colorized optical filterings districts around.
16. the manufacture method of an organic electroluminescence display device and method of manufacturing same comprises at least:
First component is provided, comprises first substrate and the organic electroluminescence cell that is formed on this first substrate;
Second component is provided, comprises:
Second substrate;
Filter layer is formed on this second substrate and has a plurality of colorized optical filterings districts; With
Shielding pattern layer is on this filter layer and corresponding to this between a plurality of colorized optical filterings districts;
To organizing this first component and this second component, and this shielding pattern layer of part contacts with this first component, to keep the spacing between this first component and this second component.
17. manufacture method as claimed in claim 16 comprises that also the configuration packed layer between this first component and this second component, wherein fills up this packed layer between this filter layer and this shielding pattern layer.
18. manufacture method as claimed in claim 16, wherein this a plurality of colorized optical filterings districts comprises the sub-filter area of a plurality of redness, the sub-filter area of a plurality of green, the sub-filter area of a plurality of blueness and the sub-filter area of a plurality of white, and each pixel region comprises that each redness, green, blueness and white sub-filter area is arranged in straight strip type array or square array, and this shielding pattern layer of part that contacts with this first component is between the sub-filter area of these a plurality of bluenesss and the adjacent sub-filter area of other colors.
19. manufacture method as claimed in claim 18 wherein forms in the step of this shielding pattern layer on this filter layer, also forms simultaneously a plurality of septs on this filter layer.
20. manufacture method as claimed in claim 19, wherein these a plurality of septs are formed at locating of the sub-filter area of these a plurality of bluenesss accordingly on every side.
21. manufacture method as claimed in claim 16, this second component that wherein provides, its this shielding pattern layer be positioned at this a plurality of colorized optical filterings districts around.
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