CN102830450A - Color filter of full-color top luminescent type organic electroluminescent display - Google Patents
Color filter of full-color top luminescent type organic electroluminescent display Download PDFInfo
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Abstract
The invention provides a color filter which comprises a plurality of repetitive pixel units, wherein each pixel unit comprises a plurality of pixels, each pixel comprises an R subpixel, a G subpixel and a B subpixel, the R subpixel, the G subpixel and the B subpixel are arranged in an L shape or an inverted L shape in each pixel, and the plurality of pixels are arranged in a complementary manner, so that the subpixels with the same color are adjacent.
Description
Technical field
The pixel that the present invention relates to a kind of color filter is arranged, and more specifically, the color filter pixel that the present invention relates to a kind of color saturation of the display of organic electroluminescence that is used to improve high resolving power, full-color and top light emitting is arranged.
Background technology
Organic Light Emitting Diode (OLED, or organic electroluminescence device) has that operating temperature range is wide, low in energy consumption, the visual angle is wide, contrast is high and advantage such as the response time is fast, is called as follow-on flat-panel monitor.According to the light transmit direction, the OLED structure can be divided into bottom-emission type and top emission type.The light of bottom-emission type OLED is from the transparent substrates outgoing.And top emission type OLED utilizes the bottom electrode of a reflection to make light from translucent or transparent top electrodes outgoing.For Active Matrix Display, top light emitting OLED has advantage, because of it not only provides high aperture, and can be with opaque, mutually integrated like the backplane substrate of monocrystalline silicon.
Figure 1A has described the sectional view of the electroluminescent display of a full-color organic top light emitting.Top light emitting OLED is deposited on the backplane substrate 1, has the reflective pixel bottom electrode 10 of driven with active matrix device and patterning on the backplane substrate 1.Top light emitting OLED is made up of a plurality of organic layers 11, and such as hole transmission layer, luminescent layer and electron transfer layer or the like, a plurality of organic layers are clipped between a reflective bottom electrode 10 and the translucent or transparent top electrodes 12.Employed organic material can be micromolecule or polymkeric substance.Top light emitting OLED is through transparent medium 13 encapsulation, transparent medium such as a plurality of pellicular cascades or a glass flake.In order to realize the full-color demonstration of high resolving power, adopt white light (W) OLED, its white light that sends contains ruddiness (R), green glow (G) and blue light (B) composition; The color filter pixel 14 of patterning is placed to the top of the white light OLED (WOLED) after the encapsulation, and with the alignment of pixels of white light OLED (WOLED), white light is decomposed into red, green, blue.Color filter 14 comprises a plurality of sub-pixels, and like R, G, B or R, G, B, W etc., they are arranged in specific pattern.
Figure 1B is the top view that the pixel of a traditional strip color filter is arranged, and here pixel 15 is made up of 16, one G sub-pixels 17 of a R sub-pixel and a B sub-pixel 18.Through repeating the pixel Pareto diagram that pixel 15 can obtain whole front panel.R sub-pixel 16 absorbs green glows (G) and blue light (B) and transmit red light R.G sub-pixel 17 absorptive red lights (R) and blue light (B) and transmit green G.B sub-pixel 18 absorptive red lights (R) and green glow (G) and transmit blue B.In such arrangement, each sub-pixel, for example the G sub-pixel 17, surrounded by the R sub-pixel 16 of two adjacent different colours and B sub-pixel 18.When the lambert's light that sends as WOLED arrives color filter through encapsulation medium 13 (seeing Figure 1A), can inevitably spread.The illumination of diffusion is mapped on adjacent R sub-pixel 16 and the B sub-pixel 18, can cause color cross talk, reduces the color saturation of G sub-pixel 17, and therefore reduces the colour gamut of whole display panel.For example show that in high resolving power this effect is more obvious in the miniscope.As for typical organic light emission photoluminescence micro-display, have SVGA resolution 0.6 inch viewing area, the size of each sub-pixel is 15 * 3 μ m.Undersized like this sub-pixel, color are a little crosstalked also can reduce the saturation degree of color significantly.
The length of the degree of the color cross talk that diffusion optical guide causes and boundary line 19 is proportional.This boundary line 19 refers to the separately line of the sub-pixel of two different colours.The area of supposing a subpixels is 3units
2(depth-width ratio 3/1), each strip sub pixels boundary line length is 6units so.Color cross talk also possibly caused by the misalignment of color filter sub-pixel and WOLED pixel in addition.
Because light spreads the color crosstalk that produces, can to reduce the thickness of encapsulation media 13 in order suppressing, or to reduce the aperture opening ratio (actual pixels light-emitting zone/pixel region) of panel.Although these two kinds of methods can both effectively suppress color crosstalk, these two kinds of methods all can shorten the life-span of OLED.
Summary of the invention
Therefore, the objective of the invention is to overcome the defective of above-mentioned prior art, provide the pixel of the color filter of the full-color top emission type organic electro luminescent display of a kind of high resolving power to arrange, reduce color cross talk thereby improve the panel colour gamut.Not reducing under encapsulation media thickness or the panel aperture opening ratio situation, utilize the arrangement of color filter of the present invention, can increase the colour gamut of panel significantly.
Another object of the present invention is to reduce the deviation of the alignment of color filter sub-pixel and WOLED pixel, and therefore further reduces the color cross talk of the full-color top emission type organic electro luminescent display of high resolving power.
In order to reach the purpose of above this invention, the pixel of color filter of the present invention is arranged and reached: the length of the boundary line between the sub-pixel of two different colours minimizes.
Based on above-mentioned guiding theory, chromatic color filter provided by the present invention comprises the pixel cell of a plurality of repetitions; Each pixel cell comprises a plurality of pixels; Each pixel comprises R sub-pixel, G sub-pixel and B sub-pixel, and wherein in each pixel, R sub-pixel, G sub-pixel and B arrangement of subpixels become L shaped or L shaped; A plurality of pixels are arranged with the mode of complementation, and the identical sub-pixel of color is got together.
According to chromatic color filter provided by the invention, wherein each pixel cell comprises 12 pixels, and the sub-pixel of per 6 same colors gets together.
According to chromatic color filter provided by the invention, wherein each pixel cell comprises 8 pixels, and the sub-pixel of per 8 same colors gets together.
According to chromatic color filter provided by the invention, wherein each pixel cell comprises 8 pixels, and the sub-pixel of per 4 same colors gets together.
According to chromatic color filter provided by the invention, wherein each pixel cell comprises 4 pixels, and each pixel also comprises an X sub-pixel except that comprising R, G, B sub-pixel, and R, G, B, X four subpixels are arranged in 2 * 2 arrays.The sub-pixel of per 4 same colors gets together.
According to chromatic color filter provided by the invention, wherein the X sub-pixel is the W sub-pixel.
According to chromatic color filter provided by the invention, wherein the X sub-pixel is any in R, B, the G sub-pixel, and the sub-pixel identical with the X sub-pixel colors is non-conterminous in the X sub-pixel.
The invention provides another kind of chromatic color filter; Comprise a plurality of pixel cells; Each pixel cell comprises two triangular pixels, and each triangular pixel comprises a triangle R sub-pixel, a triangle G sub-pixel, a triangle B sub-pixel and a triangle W sub-pixel, two triangular pixel mirror image symmetries; Two adjacent arbitrarily pixel cell mirror image symmetries make the identical sub-pixel of color get together.
According to chromatic color filter provided by the invention, wherein pixel is a right-angle triangle, and R sub-pixel, G sub-pixel, B sub-pixel and W sub-pixel are right-angle triangle.
The present invention also provides a kind of display of organic electroluminescence with chromatic color filter.
Because in the color filter provided by the invention; The sub-pixel of a plurality of same colors gets together; Therefore in making the color filter process area of the opening of employed mask corresponding to a plurality of pixels; And therefore mask open in the manufacture process of color filter of the present invention, can reduce the inaccurate risk of mask contraposition corresponding to single pixel in the prior art.
Description of drawings
Followingly the embodiment of the invention is described further with reference to accompanying drawing, wherein:
The sectional view of full-color top emission type organic electro luminescent display in Figure 1A prior art;
The vertical view that the pixel of strip color filter is arranged in Figure 1B prior art;
Fig. 2 A is the vertical view of arranging according to the chromatic color filter pixel of the full-color top emission type organic electro luminescent display of the high resolving power of first embodiment of the invention;
Fig. 2 B is the vertical view of arranging according to the pixel of the pixel cell of first embodiment of the invention;
Fig. 3 A is the vertical view of arranging according to the pixel of the chromatic color filter of the full-color top emission type organic electro luminescent display of the high resolving power of second embodiment of the invention;
Fig. 3 B is the vertical view that the pixel of the pixel cell of second enforcement according to the present invention is arranged;
Fig. 4 A is the vertical view of arranging according to the pixel of the chromatic color filter of the full-color top emission type organic electro luminescent display of the high resolving power of third embodiment of the invention;
Fig. 4 B is the vertical view of arranging according to the pixel of the pixel cell of third embodiment of the invention;
Fig. 5 A is the vertical view of arranging according to the pixel of the chromatic color filter of the full-color top emission type organic electro luminescent display of the high resolving power of fourth embodiment of the invention;
Fig. 5 B is the vertical view of arranging according to the pixel of the pixel cell of fourth embodiment of the invention;
Fig. 6 A is the vertical view of arranging according to the pixel of the chromatic color filter of the full-color top emission type organic electro luminescent display of the high resolving power of fifth embodiment of the invention;
Fig. 6 B is the vertical view of arranging according to the pixel of the pixel cell of fifth embodiment of the invention;
Fig. 7 is the vertical view of arranging according to the pixel of the pixel cell of sixth embodiment of the invention.
As shown in the figure; In order to offer some clarification on the structure of embodiments of the invention, marked specific structure and device in the drawings, but this is merely the signal needs; Be not that intention is limited to the present invention in this ad hoc structure, device and the environment; According to concrete needs, those of ordinary skill in the art can adjust these devices and environment or revise, and adjustment of being carried out or modification still are included in the scope of accompanying Claim.
Embodiment
Describe the present invention below in conjunction with accompanying drawing and embodiment; Wherein, In the following description, with description a plurality of different aspects of the present invention, yet; For the one of ordinary skilled in the art, can only utilize perhaps entire infrastructure more of the present invention or flow process to come embodiment of the present invention.For the definition of explaining, specific number, configuration and order have been set forth, but clearly, in that do not have also can embodiment of the present invention under the situation of these specific detail.In other cases, in order not obscure the present invention, will set forth no longer in detail for some well-known characteristics.
Embodiment 1
Referring to Fig. 2 A and Fig. 2 B, wherein Fig. 2 A is the vertical view that the chromatic color filter pixel of the full-color top emission type organic electro luminescent display of high resolving power of the 1st embodiment according to the present invention is arranged; Fig. 2 B is the vertical view that the pixel of the pixel cell of the 1st embodiment according to the present invention is arranged; Pixel cell shown in Fig. 2 B 20 is carried out repetition, can form the arrangement of the color filter pixel shown in Fig. 2 A.
See Fig. 2 B, pixel cell 20 comprises 12 pixels 201,202,203,204,205,206,207,208,209,210,211,212, is arranged in 2 rows according to CW.Each pixel comprises a square R sub-pixel, a square G sub-pixel and a square B sub-pixel, and in each pixel, R sub-pixel, G sub-pixel and B arrangement of subpixels become L shaped or L shaped.Each pixel in the pixel cell 20 has the different sub-pixel arrangement mode.A plurality of pixels are arranged with the mode of " complementation " shown in Fig. 2 B; And the identical sub-pixel of color is got together; The sub-pixel that the color that gets together is identical forms sub-pixel unit 213,214 and 215, in each sub-pixel unit, comprises 6 sub-pixels that color is identical, and for example sub-pixel unit 213 comprises 6 R sub-pixels; Sub-pixel unit 214 comprises 6 G sub-pixels, and sub-pixel unit 215 comprises 6 B sub-pixels.
Repeat the pixel arrangement that pixel cell 20 can form the chromatic color filter shown in Fig. 2 A, wherein: 6 R sub-pixels that sub-pixel unit 213 comprises are from pixel 202,203,204,209; 210,211, or from pixel 208,207,212; 205,206,201, wherein pixel 208,207; 212,205,206,201 respectively from four adjacent unit pixel 20.In like manner, 6 G sub-pixels that sub-pixel unit 214 comprises are from pixel 204,205,206,207,208,209, or from pixel 210,211,212,201,202,203.6 B sub-pixels that sub-pixel unit 215 comprises are from pixel 206,201,202,207,212,211, or from pixel 210,209,208,203,204,205.
Sub-pixel unit 213,214 and 215 horizontal adjacent arrangements.Shown in Fig. 2 A, if do not consider the sub-pixel with grey colour specification, the pixel of so whole color filter is arranged by a plurality of sub-pixel unit 213,214 and 215 and is constituted.That is to say that the pixel of the color filter that present embodiment provides is arranged another kind also capable of using and repeated to form by the repetitive that sub-pixel unit 213,214 and 215 constitutes.
In the repetitive that constitutes by sub-pixel unit 213,214 and 215; Each sub-pixel unit comprises 6 sub-pixels that are arranged in 2 * 3 arrays that color is identical, and sub-pixel unit 213,214 and 215 color are different, and for example sub-pixel unit 213 comprises 6 R sub-pixels; Sub-pixel unit 214 comprises 6 G sub-pixels; Sub-pixel unit 215 comprises 6 B sub-pixels, and a plurality of sub-pixel unit 213,214 and 215 is adjacent in the horizontal, and is arranged in 2 * 9 arrays.
The repetitive that is made up of sub-pixel unit 213,214 and 215 extends in the horizontal successively, in the vertical, with the downward translation of this repetitive, and adds the distance of a subpixels to left one sub-pixel elements; And then translation downwards, and add the distance of a subpixels to right translation one sub-pixel elements ... longitudinal extension in this way, the pixel that forms the color filter that present embodiment provides is arranged.
Because the arrangement of subpixels of per 6 same colors is together, to compare with traditional strip pixel arrangement, the average length of the boundary line of each square sub-pixel (line between the sub-pixel of two different colours) can shorten.For example, the area of supposing a subpixels is 3units
2, each sub pixels boundary line average length is 2.89units so, arranges with traditional strip sub-pixel (depth-width ratio 3/1) and compares remarkable shortening.Because the length of the degree of color cross talk and boundary line is proportional, therefore can reduce color cross talk.In addition, the area of sub-pixel unit is 6 times of single sub-pixel area; Therefore sub-pixel unit is accurately aimed at the WOLED pixel, thus the misalignment of color filter sub-pixel and WOLED pixel can be reduced, thereby can further alleviate color cross talk.
Embodiment 2
Fig. 3 A is the vertical view that the pixel of the chromatic color filter of the full-color top emission type organic electro luminescent display of the high resolving power of the 2nd embodiment according to the present invention is arranged; Fig. 3 B is the vertical view that the pixel of the pixel cell of the 2nd enforcement according to the present invention is arranged; Pixel cell shown in Fig. 3 B 30 is carried out repetition, can form the arrangement of the color filter pixel shown in Fig. 3 A.
See Fig. 3 A Fig. 3 B, pixel cell 30 comprises 8 pixels, that is, 301,302,303,304,305,306,307,308, be arranged in 2 rows according to CW.Each pixel comprises a square R sub-pixel, a square G sub-pixel and a square B sub-pixel.In each pixel, R sub-pixel, G sub-pixel and B arrangement of subpixels become L shaped or L shaped.Each pixel in the pixel cell 30 has the different sub-pixel arrangement mode; A plurality of pixels are arranged with the mode of " complementation " shown in Fig. 3 B; And the sub-pixel that color is identical gets together; The sub-pixel that the color that gets together is identical forms sub-pixel unit 309,310 and 311, in each sub-pixel unit, comprises 8 sub-pixels that color is identical, and for example sub-pixel unit 309 comprises 8 R sub-pixels (per 4 R sub-pixels get together); Sub-pixel unit 310 comprises 8 G sub-pixels, and sub-pixel unit 311 comprises 8 B sub-pixels.
Repeating the pixel that pixel cell 30 can form chromatic color filter and arrange, wherein 1) 8 R sub-pixels comprising of sub-pixel unit 309 are from pixel 302,303,306,307,305,308,301,304; 2) 8 G sub-pixels comprising of sub-pixel unit 310 are from pixel 301,302,303,304,305,306,307,308; 3) 8 B sub-pixels comprising of sub-pixel unit 311 are from pixel 301,302,303,304,305,306,307,308.
See Fig. 3 A, if do not consider the sub-pixel with grey colour specification, the pixel of so whole color filter is arranged by a plurality of sub-pixel unit 309,310 and 311 and is constituted.That is to say that the pixel of the color filter that present embodiment provides is arranged another kind also capable of using and repeated to form by the repetitive that sub-pixel unit 309,310 and 311 constitutes.
In the repetitive by sub-pixel unit 309,310 and 311 formations, sub-pixel unit 309 comprises 8 R sub-pixels, is arranged in 2 * 2 arrays that two components leave; Sub-pixel unit 310 comprises 8 G sub-pixels that are arranged in 2 * 4 arrays; Sub-pixel unit 311 comprises 8 B sub-pixels that are arranged in 2 * 4 arrays.Shown in Fig. 3 A, sub-pixel unit 309,310 and 311 is adjacent one another are.
Repetitive by sub-pixel list 309,310 and 311 formations extends with vertically going up in the horizontal, and the pixel of the color filter that the formation present embodiment provides is arranged.
In this enforcement row, the arrangement of subpixels of per 8 or 4 same colors together.The area of supposing a subpixels is 3units
2Boundary line average length from each square sub-pixel of sub-pixel unit 310 or 311 is 2.6units; Every square of sub pixels boundary line average length from sub-pixel unit 309 is 3.46units, and is all short than the boundary line length of the strip pixel (depth-width ratio 3/1) of conventional arrangement.So, can reduce because the color cross talk that diffusion optical guide causes.In the color filter that present embodiment provides in addition; The sub-pixel of a plurality of same colors gets together; Therefore the area of the opening of employed mask can reduce the inaccurate risk of mask contraposition, so further alleviate color cross talk corresponding to a plurality of pixels in making the color filter process.
Embodiment 3
Fig. 4 A is the vertical view that the pixel of the chromatic color filter of the full-color top emission type organic electro luminescent display of the high resolving power of the 3rd embodiment according to the present invention is arranged; Fig. 4 B is the vertical view that the pixel of the pixel cell of the 3rd embodiment according to the present invention is arranged; Pixel cell shown in Fig. 4 B 40 is carried out repetition, can form the arrangement of the color filter pixel shown in Fig. 4 A.
Referring to Fig. 4 B, pixel cell 40 comprises 8 pixels, that is, 401,402,403,404,405,406,407,408, be arranged in 2 rows according to CW.Each pixel comprises a square sub-pixel R, a square sub-pixel G and a square sub-pixel B, and in each pixel, R sub-pixel, G sub-pixel and B arrangement of subpixels become L shaped or L shaped.A plurality of pixels are arranged with the mode of " complementation " shown in Fig. 4 B; And the identical sub-pixel of color is got together; The sub-pixel that the color that gets together is identical forms sub-pixel unit 409,410 and 411, in each sub-pixel unit, comprises 4 sub-pixels that color is identical, and for example sub-pixel unit 409 comprises 4 R sub-pixels; Sub-pixel unit 410 comprises 4 G sub-pixels, and sub-pixel unit 411 comprises 4 B sub-pixels.
Repeat the pixel that pixel cell 40 can form the chromatic color filter shown in Fig. 4 A and arrange, wherein 6 R sub-pixels comprising of sub-pixel unit 409 are from pixel 402,403,406; 407, or from pixel 405,408; 401,404, wherein pixel 405; 408,401,404 respectively from four adjacent unit pixel 20.In like manner, 4 G sub-pixels that sub-pixel unit 410 comprises are from pixel 403,404,405,406, or from pixel 408,407,402,401; 4 B sub-pixels that sub-pixel unit 411 comprises are from pixel 401,402,407,408, or from pixel 406,405,404,403.
Sub-pixel unit 409,410 and 411 horizontal adjacent arrangements.Shown in Fig. 4 A, if do not consider the sub-pixel with grey colour specification, the pixel of so whole color filter is arranged and is made up of a plurality of sub-pixel unit 409,410 and 411.That is to say that the pixel of the color filter that present embodiment provides is arranged another kind also capable of using and repeated to form by the repetitive that sub-pixel unit 409,410 and 411 constitutes.
In the repetitive that constitutes by sub-pixel unit 409,410 and 411; Each sub-pixel unit comprises 4 sub-pixels that are arranged in 2 * 2 arrays that color is identical, and sub-pixel unit 409,410 and 411 color are different, and for example sub-pixel unit 409 comprises 4 R sub-pixels; Sub-pixel unit 410 comprises 4 G sub-pixels; Sub-pixel unit 411 comprises 4 B sub-pixels, and a plurality of sub-pixel unit 409,410 and 411 is adjacent in the horizontal, and is arranged in 2 * 6 arrays.
The repetitive that is made up of sub-pixel unit 409,410 and 411 extends in the horizontal successively, in the vertical, with the downward translation of this repetitive, and adds the distance of a subpixels to left one sub-pixel elements; And then translation downwards, and add the distance of a subpixels to right translation one sub-pixel elements ... longitudinal extension in this way, the pixel that forms the color filter that present embodiment provides is arranged.
Because the arrangement of subpixels of per 4 same colors is together, to compare with traditional strip pixel arrangement, the average length of the boundary line of each square sub-pixel (line between the sub-pixel of two different colours) can shorten.For example, the area of supposing a subpixels is 3units
2, each sub pixels boundary line average length is 3.46units so, arranges with traditional strip sub-pixel (depth-width ratio 3/1) and compares remarkable shortening.Therefore can reduce color cross talk.In the color filter that present embodiment provides in addition; The sub-pixel of a plurality of same colors gets together; Therefore the area of the opening of employed mask can reduce the inaccurate risk of mask contraposition corresponding to a plurality of pixels in making the color filter process, further alleviates color cross talk.
Embodiment 4
Referring to Fig. 5 A and 5B, wherein Fig. 5 A is the vertical view that the pixel of chromatic color filter of the full-color top emission type organic electro luminescent display of high resolving power of the 4th embodiment according to the present invention is arranged; Fig. 5 B is the vertical view that the pixel of the pixel cell of the 4th embodiment according to the present invention is arranged; Pixel cell shown in Fig. 5 B 50 is carried out repetition, can form the arrangement of the color filter pixel shown in Fig. 5 A.
See Fig. 5 B, pixel cell 50 comprises 4 pixels 501,502,503,504, is arranged in 2 rows according to CW.Each pixel comprises 1 square R sub-pixel, 1 square G sub-pixel and 2 square B sub-pixels, and in each pixel, 4 subpixels are arranged in 2 * 2 arrays, and 2 B arrangement of subpixels are at the diagonal angle, and promptly adjacent R, G, B sub-pixel are L-shaped or L shaped.Each pixel in the pixel cell 50 has the different sub-pixel arrangement mode; A plurality of line of pixels are listed in together, and the identical sub-pixel of color is got together, and the sub-pixel that the color that gets together is identical forms sub-pixel unit 505,506 and 507; In each sub-pixel unit, comprise the identical sub-pixel of color; For example sub-pixel unit 505 comprises 4 R sub-pixels, and sub-pixel unit 506 comprises 4 G sub-pixels, and sub-pixel unit 507 comprises 8 B sub-pixels.
Repeat the pixel arrangement that pixel cell 50 can form chromatic color filter.
Shown in Fig. 5 A, if do not consider the sub-pixel with grey colour specification, the pixel of so whole color filter is arranged and is made up of a plurality of sub-pixel unit 505,506 and 507.That is to say that the pixel of the color filter that present embodiment provides is arranged another kind also capable of using and repeated to form by the repetitive that sub-pixel unit 505,506 and 507 constitutes.
In the repetitive that constitutes by sub-pixel unit 505,506 and 507; Sub-pixel unit 505,506 and 507 color are different; For example sub-pixel unit 505 comprises 4 R sub-pixels that are arranged in 2 * 2 arrays; Sub-pixel unit 506 comprises 4 G sub-pixels that are arranged in 2 * 2 arrays, and sub-pixel unit 507 comprises 8 B sub-pixels that are arranged in two group of 2 * 2 array.Sub-pixel unit 505,506 and 507 is arranged in 2 * 2 arrays, wherein two of sub-pixel unit 507 groups of diagonal angles that are positioned at array.
The repetitive that is made up of sub-pixel unit 505,506 and 507 extends on horizontal and vertical successively, and the pixel of the color filter that the formation present embodiment provides is arranged.In the pixel of this color filter was arranged, each sub-pixel unit was different with the color of on every side sub-pixel unit.
In the embodiments of the invention, each pixel also can comprise 1 square B sub-pixel, 1 square R sub-pixel and 2 square G sub-pixels, or comprise 1 square B sub-pixel, and 1 square G sub-pixel and 2 square R sub-pixels, wherein identical color is positioned at the diagonal angle.
In the present embodiment, the arrangement of subpixels of per 4 same colors together.The area of supposing a subpixels is 3units
2, so the boundary line average length of every square of sub-pixel is 3.46units, and is shorter than the strip sub-pixel (depth-width ratio 3/1) of conventional arrangement.Therefore, can realize reducing because the color cross talk that diffusion optical guide causes.In the color filter that present embodiment provides in addition; The sub-pixel of a plurality of same colors gets together; Therefore the area of the opening of employed mask can reduce the inaccurate risk of mask contraposition corresponding to a plurality of pixels in making the color filter process, further alleviates color cross talk.
Embodiment 5
Referring to Fig. 6 A and 6B, wherein Fig. 6 A is the vertical view that the pixel of chromatic color filter of the full-color top emission type organic electro luminescent display of high resolving power of the 5th embodiment according to the present invention is arranged; Fig. 6 B is the vertical view that the pixel of the pixel cell of the 5th embodiment according to the present invention is arranged; Pixel cell shown in Fig. 6 B 60 is carried out repetition, can form the arrangement of the color filter pixel shown in Fig. 6 A.
See Fig. 6 B, pixel cell 60 comprises 4 pixels 601,602,603,604, is arranged in 2 rows according to CW.Each pixel comprises 1 square R sub-pixel, 1 square G sub-pixel, 1 square B sub-pixel and 1 W sub-pixel, and in each pixel, 4 subpixels are arranged in 2 * 2 arrays.Each pixel in the pixel cell 60 has the different sub-pixel arrangement mode; A plurality of line of pixels are listed in together; And the identical sub-pixel of color is got together, and the sub-pixel that the color that gets together is identical forms sub-pixel unit 605,606,607 and 608, in each sub-pixel unit, comprises the identical sub-pixel of color; For example sub-pixel unit 605 comprises 4 R sub-pixels; Sub-pixel unit 606 comprises 4 G sub-pixels, and sub-pixel unit 607 comprises 4 B sub-pixels, and sub-pixel unit 608 comprises 4 W sub-pixels.
Repeat the pixel arrangement that pixel cell 60 can form chromatic color filter.
Shown in Fig. 6 A, if do not consider the sub-pixel with grey colour specification, the pixel of so whole color filter is arranged and is made up of a plurality of sub-pixel unit 605,606,607 and 608.That is to say that the pixel of the color filter that present embodiment provides is arranged another kind also capable of using and repeated to form by the repetitive that sub-pixel unit 605,606,607 and 608 constitutes.
In the repetitive that constitutes by sub-pixel unit 605,606,607 and 608; Sub-pixel unit 605,606,607 and 608 color are different; For example sub-pixel unit 605 comprises 4 R sub-pixels that are arranged in 2 * 2 arrays; Sub-pixel unit 606 comprises 4 G sub-pixels that are arranged in 2 * 2 arrays, and sub-pixel unit 607 comprises 4 B sub-pixels that are arranged in 2 * 2 arrays, and sub-pixel unit 608 comprises 4 W sub-pixels that are arranged in 2 * 2 arrays.Sub-pixel unit 605,606,607 and 608 is arranged in 2 * 2 arrays.
The repetitive that is made up of sub-pixel unit 605,606,607 and 608 extends on horizontal and vertical successively, and the pixel of the color filter that the formation present embodiment provides is arranged.
In the present embodiment, the arrangement of subpixels of per 4 same colors together.The area of supposing a subpixels is 4units
2, the boundary line average length of each sub-pixel is 4units so, and is shorter than the strip sub-pixel (depth-width ratio 4/1, boundary line length are 8units) of conventional arrangement.Therefore, can reduce because the color cross talk that diffusion optical guide causes.In addition, also can reduce the misalignment of color color filter sub-pixel and WOLED pixel, and further alleviate color cross talk.
In table 1, the color cross talk degree that the pixel of conventional pixel arrangement and embodiment 5 is arranged compares, and data are produced by TracePro emulation.
Table 1
Each sub-pixel size of supposing traditional strip sub-pixel is 12 * 3 μ m, is of a size of 6 * 6 μ m according to the square sub-pixel of embodiment 5.A WOLED pixel below the B sub-pixel is opened and supposes that it produces the light of 50000 units.Table 1 shows the light of being collected by each sub-pixel.Although at R, the WOLED pixel below G and the W sub-pixel is in closed condition, since the light diffusion, R, and G and W sub-pixel still can receive light.Therefore the degree of color cross talk is defined as (light that the light that the light that the R sub-pixel receives+G sub-pixel receives+the W sub-pixel receives)/50000.Can be clearly seen that from table 1, utilize according to the color filter pixel of embodiment 5 and arrange, color cross talk reduced～and 50%.In the color filter that present embodiment provides in addition, the sub-pixel of a plurality of same colors gets together, and therefore the area of the opening of employed mask can reduce the inaccurate risk of mask contraposition corresponding to a plurality of pixels in making the color filter process.
In addition, among the embodiment 1 to embodiment 5, the arrangement of sub-pixel is not limited to the arrangement shown in Fig. 2 to Fig. 6.Can intercourse the position between R, G, B, the W sub-pixel, for example all R sub-pixels replaced to the G sub-pixel, and all G sub-pixels are replaced to the R sub-pixel.For example the W sub-pixel among the embodiment 5 is replaced to the B sub-pixel again, the color filter pixel that can obtain among the embodiment 4 is arranged.
The full-color top emission type organic electro luminescent display of high resolving power according to the present invention can reduce the light diffusion to a great extent.In addition, also can reduce the misalignment of chromatic color filter pixel and WOLED pixel, and further alleviate the color cross talk of the full-color top emission type organic electro luminescent display of high resolving power.
Embodiment 6
Referring to Fig. 7, be the vertical view that the pixel of chromatic color filter of the full-color top emission type organic electro luminescent display of high resolving power of the 6th embodiment according to the present invention is arranged.
Wherein each square pixel cell 70 comprises 701,702, two right-angle triangle pixel complementary of two right-angle triangle pixels squarely pixel cell 70.Each right-angle triangle pixel 701; 702 comprise a right-angle triangle sub-pixel R respectively, a right-angle triangle sub-pixel G, a right-angle triangle sub-pixel B; A right-angle triangle sub-pixel W; Therefore two right-angle triangle pixels 701,702 make the identical sub-pixel of color get together with respect to separately hypotenuse mirror image each other.
Four edges with square pixels unit 70 is an axis of symmetry; Around it, make mirror image switch; Each pixel cell that can obtain being adjacent carries out mirror image switch in an identical manner again to the pixel cell of gained, can obtain each pixel cell with 70 neighbours in square pixels unit; So repeat, the pixel that can obtain present embodiment provides is arranged.Be during the pixel that provides of present embodiment is arranged, therefore the pixel cell that is adjacent of pixel cell makes the identical sub-pixel of color get together with respect between the two boundary line mirror image symmetry arbitrarily.
Because arrange for mirror image between the pixel cell, the arrangement of subpixels of same color is compared with traditional strip pixel arrangement together, and the average length of the boundary line of each sub-pixel (line between the sub-pixel of two different colours) can shorten.In the color filter that present embodiment provides in addition; The sub-pixel of a plurality of same colors gets together; Therefore the area of the opening of employed mask can reduce the inaccurate risk of mask contraposition corresponding to a plurality of pixels in making the color filter process, further alleviates color cross talk.
What should explain at last is; Above embodiment is only in order to describe technical scheme of the present invention rather than the present technique method is limited; The present invention can extend to other modification, variation, application and embodiment on using, and therefore thinks that all such modifications, variation, application, embodiment are in spirit of the present invention and teachings.
Claims (12)
1. chromatic color filter; The pixel cell that comprises a plurality of repetitions, each pixel cell comprises a plurality of pixels, each pixel comprises R sub-pixel, G sub-pixel and B sub-pixel; Wherein in each pixel; R sub-pixel, G sub-pixel and B arrangement of subpixels become L shaped or L shaped, and a plurality of pixels are arranged with the mode of complementation, and the identical sub-pixel of color is got together.
2. chromatic color filter according to claim 1, wherein each pixel cell comprises 12 pixels, the sub-pixel of per 6 same colors gets together.
3. chromatic color filter according to claim 1, wherein each pixel cell comprises 8 pixels, the sub-pixel of per 8 same colors gets together.
4. chromatic color filter according to claim 1, wherein each pixel cell comprises 8 pixels, the sub-pixel of per 4 same colors gets together.
5. chromatic color filter according to claim 1, wherein each pixel cell comprises 4 pixels, and each pixel also comprises an X sub-pixel except that comprising R, G, B sub-pixel, and R, G, B, X four subpixels are arranged in 2 * 2 arrays.
6. chromatic color filter according to claim 5, the sub-pixel of wherein per 4 same colors gets together.
7. chromatic color filter according to claim 5, wherein the X sub-pixel is the W sub-pixel.
8. chromatic color filter according to claim 5, wherein the X sub-pixel is any in R, B, the G sub-pixel.
9. chromatic color filter according to claim 8, wherein identical with X sub-pixel colors sub-pixel is non-conterminous in the X sub-pixel.
10. chromatic color filter; Comprise a plurality of pixel cells; Each pixel cell comprises two triangular pixels, and each triangular pixel comprises a triangle R sub-pixel, a triangle G sub-pixel, a triangle B sub-pixel and a triangle W sub-pixel, two triangular pixel mirror image symmetries; Two adjacent arbitrarily pixel cell mirror image symmetries make the identical sub-pixel of color get together.
11. chromatic color filter according to claim 10, wherein pixel is a right-angle triangle, and R sub-pixel, G sub-pixel, B sub-pixel and W sub-pixel are right-angle triangle.
12. a display of organic electroluminescence has like claim 1 or the described chromatic color filter of claim 10.
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| CN2011101578392A CN102830450A (en) | 2011-06-13 | 2011-06-13 | Color filter of full-color top luminescent type organic electroluminescent display |
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| CN2011101578392A CN102830450A (en) | 2011-06-13 | 2011-06-13 | Color filter of full-color top luminescent type organic electroluminescent display |
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