WO2012171154A1 - 全彩顶部发光型有机电致发光显示器的彩色滤色片 - Google Patents

全彩顶部发光型有机电致发光显示器的彩色滤色片 Download PDF

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Publication number
WO2012171154A1
WO2012171154A1 PCT/CN2011/075632 CN2011075632W WO2012171154A1 WO 2012171154 A1 WO2012171154 A1 WO 2012171154A1 CN 2011075632 W CN2011075632 W CN 2011075632W WO 2012171154 A1 WO2012171154 A1 WO 2012171154A1
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WIPO (PCT)
Prior art keywords
sub
pixel
pixels
color filter
color
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PCT/CN2011/075632
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English (en)
French (fr)
Inventor
陈树明
郭海成
凌代年
邱成峰
贾洪亮
黄飚
Original Assignee
广东中显科技有限公司
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Priority to PCT/CN2011/075632 priority Critical patent/WO2012171154A1/zh
Publication of WO2012171154A1 publication Critical patent/WO2012171154A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/201—Filters in the form of arrays
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/353—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/302—Details of OLEDs of OLED structures
    • H10K2102/3023—Direction of light emission
    • H10K2102/3026—Top emission

Definitions

  • the present invention relates to a pixel arrangement of color filters, and more particularly to a color filter pixel arrangement for improving the color saturation of high resolution, full color and top emitting organic electroluminescent displays. Background technique
  • OLEDs Organic light-emitting diodes
  • OLEDs organic electroluminescent devices
  • next-generation flat panel displays Depending on the direction of light emission, the OLED structure can be classified into a bottom emission type and a top emission type. The light of the bottom emission type OLED is emitted from the transparent substrate.
  • the top-emitting OLED utilizes a reflective bottom electrode to cause light to exit from the translucent or transparent top electrode.
  • top-emitting OLEDs have advantages because they not only provide high aperture ratios, but can also be integrated with opaque backplane substrates such as single crystal silicon.
  • FIG. 1A depicts a cross-sectional view of a full color organic top emitting electroluminescent display.
  • a top emitting OLED is deposited on the backplane substrate 1 having an active matrix driver and a patterned reflective pixel bottom electrode 10 thereon.
  • the top-emitting OLED is composed of a plurality of organic layers 11, such as a hole transport layer, a light-emitting layer, and an electron transport layer, and the like, and a plurality of organic layers are sandwiched between a reflective bottom electrode 10 and a translucent or transparent top electrode 12.
  • the organic material used can be a small molecule Or polymer.
  • the top emitting OLED is encapsulated by a transparent medium such as a plurality of film stacks or a glass sheet.
  • a white (W) OLED which emits white light containing red (R), green (G) and blue (B) components; patterned color filter pixels 14 are placed The top of the encapsulated white OLED (WOLED) is aligned with the pixels of the white OLED (WOLED) to decompose the white light into red, green, and blue light.
  • the color filter 14 includes a plurality of sub-pixels such as 1, G, 8 or 1, G, B, W, etc., which are arranged in a specific pattern.
  • Fig. 1B is a top view of a pixel arrangement of a conventional strip filter in which a pixel 15 is composed of an R sub-pixel 16, a G sub-pixel 17 and a B sub-pixel 18.
  • the pixel arrangement pattern of the entire panel can be obtained by repeating the pixels 15.
  • the R sub-pixel 16 absorbs green (G) and blue (B) and transmits red light 1 .
  • the G sub-pixel 17 absorbs red (R) and blue (B) light and transmits green light G.
  • the B sub-pixel 18 absorbs red (R) and green (G) light and transmits blue light B.
  • each sub-pixel, such as G sub-pixel 17, is surrounded by two adjacent R sub-pixels 16 and B sub-pixels 18 of different colors.
  • the degree of color crosstalk caused by light diffusion is proportional to the length of the boundary line 19.
  • the boundary line 19 refers to a line separating two sub-pixels of different colors. Assuming a sub-pixel has an area of 3 units 2 (aspect ratio of 3/1), then each strip sub-pixel boundary line length is 6 units.
  • color crosstalk can also Can be caused by misalignment of the color filter sub-pixels and the WOLED pixels.
  • the thickness of the package medium 13 can be reduced, or the aperture ratio of the panel (actual pixel light-emitting area/pixel area) can be reduced. Although both methods can effectively suppress color crosstalk, both methods shorten the life of the OLED. Summary of the invention
  • the color gamut of the panel can be significantly increased by the arrangement of the color filters of the present invention without reducing the thickness of the package medium or the aperture ratio of the panel.
  • Another object of the present invention is to reduce the alignment deviation of the color filter sub-pixels and the WOLED pixels, and thus further reduce the color crosstalk of the high-resolution full-color top-emission type organic electroluminescent display.
  • the pixel arrangement of the color filter of the present invention is achieved: the length of the boundary line between the sub-pixels of two different colors is the most.
  • the color filter provided by the present invention includes a plurality of repeated pixel units, each pixel unit includes a plurality of pixels, and each pixel includes an R sub-pixel, a G sub-pixel, and a B sub-pixel, wherein In each pixel, the R sub-pixel, the G sub-pixel, and the B sub-pixel are arranged in an L-shape or an inverted-L shape, and the plurality of pixels are arranged in a complementary manner to cause the sub-pixels of the same color to be twisted together.
  • each pixel unit includes 12 pixels, and every 6 sub-pixels of the same color are twisted together.
  • each pixel unit includes 8 pixels, and every 8 sub-pixels of the same color are twisted together. According to the color filter provided by the present invention, each pixel unit includes 8 pixels, and every 4 sub-pixels of the same color are twisted together.
  • each pixel unit includes 4 pixels, and each pixel includes an X sub-pixel, R, G, B, and X sub-pixels in addition to the 1st, G, and B sub-pixels.
  • the pixels are arranged in a 2 2 array. Every 4 sub-pixels of the same color are tied together.
  • the X sub-pixel is a W sub-pixel.
  • the X sub-pixel is any one of the B and G sub-pixels
  • the sub-pixel having the same color as the X sub-pixel is not adjacent to the X sub-pixel.
  • the present invention provides another color filter comprising a plurality of pixel units, each pixel unit comprising two triangular pixels, each triangular pixel comprising a triangular R sub-pixel, a triangular G sub-pixel, and a triangular B sub-pixel And a triangular W sub-pixel, the two triangular pixels are mirror-symmetrical, and any two adjacent pixel units are mirror-symmetrical, so that the sub-pixels with the same color are twisted together.
  • the pixels are right triangles
  • the R sub-pixels, the G sub-pixels, the B sub-pixels, and the W sub-pixels are right-angled triangles.
  • the present invention also provides an organic electroluminescent display having a color filter.
  • the area of the opening of the mask used in the process of manufacturing the color filter corresponds to a plurality of pixels, and the prior art masks
  • the film opening corresponds to a single pixel, so that the risk of misalignment of the mask can be reduced during the manufacturing process of the color filter of the present invention.
  • FIG. 1A is a cross-sectional view of a full-color top-emitting organic electroluminescent display in the prior art
  • FIG. 1B is a top view of a pixel arrangement of a strip-shaped color filter in the prior art
  • 2A is a plan view showing a color filter pixel arrangement of a high-resolution full-color top-emission type organic electroluminescence display according to a first embodiment of the present invention
  • FIG. 2B is a plan view of a pixel arrangement of a pixel unit according to a first embodiment of the present invention
  • FIG. 3A is a color filter of a high-resolution full-color top emission type organic electroluminescence display according to a second embodiment of the present invention
  • a top view of the pixel arrangement
  • FIG. 3B is a plan view of a pixel arrangement of a pixel unit according to a second embodiment of the present invention
  • FIG. 4A is a pixel arrangement of a color filter of a high-resolution full-color top emission type organic electroluminescence display according to a third embodiment of the present invention
  • FIG. 4B is a plan view of a pixel arrangement of a pixel unit according to a third embodiment of the present invention
  • FIG. 5A is a pixel of a color filter of a high-resolution full-color top emission type organic electroluminescence display according to a fourth embodiment of the present invention; a top view of the arrangement;
  • FIG. 5B is a plan view of a pixel arrangement of a pixel unit according to a fourth embodiment of the present invention
  • FIG. 6A is a pixel of a color filter of a high-resolution full-color top emission type organic electroluminescence display according to a fifth embodiment of the present invention; a top view of the arrangement;
  • FIG. 6B is a plan view showing a pixel arrangement of a pixel unit according to a fifth embodiment of the present invention
  • FIG. 7 is a plan view showing a pixel arrangement of a pixel unit according to a sixth embodiment of the present invention.
  • FIG. 2A is a plan view of a color filter pixel arrangement of a high-resolution full-color top-emission type organic electroluminescence display according to a first embodiment of the present invention
  • FIG. 2B is a first aspect of the present invention.
  • a top view of the pixel arrangement of the pixel unit of the embodiment; repeating the pixel unit 20 shown in FIG. 2B, the arrangement of the color filter pixels shown in FIG. 2A can be formed.
  • the pixel unit 20 includes 12 pixels 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212 arranged in 2 rows in a clockwise direction.
  • Each pixel includes a square R sub-pixel, a square G sub-pixel and a square B sub-pixel.
  • the R sub-pixel, the G sub-pixel and the B sub-pixel are arranged in an L shape or an inverted L shape.
  • Each pixel in pixel unit 20 has a different sub-pixel arrangement. A plurality of pixels are arranged in a "complementary" manner as shown in FIG.
  • sub-pixel unit 2B and sub-pixels of the same color are twisted together, and sub-pixels of the same color are formed to form sub-pixel units 213, 214, and 215, in each sub-pixel.
  • the pixel unit contains six sub-pixels of the same color, such as a sub-pixel sheet.
  • the element 213 includes six R sub-pixels
  • the sub-pixel unit 214 includes six G sub-pixels
  • the sub-pixel unit 215 includes six B sub-pixels.
  • the pixel arrangement of the color filter shown in FIG. 2A can be formed by repeating the pixel unit 20, wherein: the sub-pixel unit 213 includes 6 R sub-pixels from the pixels 202, 203, 204, 209, 210, 211, or from the pixel. 208, 207, 212, 205, 206, 201, wherein the pixels 208, 207, 212, 205, 206, 201 are from four adjacent pixel units 20, respectively. Similarly, the sub-pixel unit 214 contains six G sub-pixels from the pixels 204, 205, 206, 207, 208, 209, or from the pixels 210, 211, 212, 201, 202, 203. Sub-pixel unit 215 includes six B sub-pixels from pixels 206, 201, 202, 207, 212, 211, or from pixels 210, 209, 208, 203, 204, 205 »
  • Sub-pixel units 213, 214, and 215 are arranged adjacent laterally. As shown in Fig. 2A, if the sub-pixels indicated by gray are not considered, the pixel arrangement of the entire color filter is composed of a plurality of sub-pixel units 213, 214 and 215. That is to say, the pixel arrangement of the color filter provided in this embodiment can also be repeated by using another repeating unit composed of the sub-pixel units 213, 214 and 215.
  • each of the sub-pixel units includes six sub-pixels of the same color arranged in a 2 x 3 array, and the sub-pixel units 213, 214, and 215 are different in color, for example,
  • the pixel unit 213 includes 6 R sub-pixels
  • the sub-pixel unit 214 includes 6 G sub-pixels
  • the sub-pixel unit 215 includes 6 B sub-pixels
  • the plurality of sub-pixel units 213, 214, and 215 are adjacent in the lateral direction, and are arranged in 2 X 9 array.
  • the repeating unit composed of the sub-pixel units 213, 214, and 215 sequentially extends in the lateral direction, in the longitudinal direction, shifts the repeating unit downward, and shifts the distance of one sub-pixel unit plus one sub-pixel to the left; Translating, and translating a sub-pixel unit to the right by a sub-pixel distance... extending longitudinally in this manner, forming the pixel arrangement of the color filter provided by the present embodiment. Since every six sub-pixels of the same color are arranged together, the average length of the boundary line of each square sub-pixel (the line between two sub-pixels of different colors) is shortened compared to the conventional strip-shaped pixel arrangement.
  • each sub-pixel boundary line is 2.89 units, which is significantly shorter than the conventional strip sub-pixel (aspect ratio of 3/1). Since the degree of color crosstalk is proportional to the length of the boundary line, color crosstalk can be reduced.
  • the area of the sub-pixel unit is 6 times the area of the single sub-pixel; therefore, the sub-pixel unit is easily aligned with the WOLED pixel, so that the misalignment of the color filter sub-pixel and the WOLED pixel can be reduced. The color crosstalk can be further alleviated.
  • FIG. 3A is a plan view showing a pixel arrangement of a color filter of a high-resolution full-color top-emission type organic electroluminescence display according to a second embodiment of the present invention
  • FIG. 3B is a pixel arrangement of a pixel unit according to a second embodiment of the present invention
  • a top view of the pixel unit 30 shown in FIG. 3B is repeated to form an arrangement of the color filter pixels shown in FIG. 3A.
  • the pixel unit 30 includes eight pixels, that is, 301, 302, 303, 304, 305, 306, 307, 308, which are arranged in two rows in a clockwise direction.
  • Each pixel contains a square R sub-pixel, a square G sub-pixel and a square B sub-pixel.
  • the R sub-pixel, the G sub-pixel, and the B sub-pixel are arranged in an L shape or an inverted L shape.
  • Each of the pixels in the pixel unit 30 has a different sub-pixel arrangement, and the plurality of pixels are arranged in a "complementary" manner as shown in FIG. 3B, and the sub-pixels of the same color are twisted together, and the sub-pixels of the same color are joined together.
  • the pixels form sub-pixel units 309, 310, and 311, and each sub-pixel unit includes eight sub-pixels of the same color.
  • the sub-pixel unit 309 includes eight R sub-pixels (every four R sub-pixels are tied together).
  • Sub-pixel unit 310 includes 8 G sub-images
  • the sub-pixel unit 311 includes eight B sub-pixels.
  • the pixel arrangement of the color filter can be formed by repeating the pixel unit 30, wherein 1) the sub-pixel unit 309 includes 8 R sub-pixels from the pixels 302, 303, 306, 307, 305, 308, 301, 304; 2) The pixel unit 310 includes eight G sub-pixels from the pixels 301, 302, 303, 304, 305, 306, 307, 308; 3) the sub-pixel unit 311 includes eight B sub-pixels from the pixels 301, 302, 303, 304, 305, 306. , 307, 308.
  • the pixel arrangement of the entire color filter is composed of a plurality of sub-pixel units 309, 310 and 311. That is to say, the pixel arrangement of the color filter provided in this embodiment can also be repeated by using another repeating unit composed of sub-pixel units 309, 310 and 311.
  • the sub-pixel unit 309 includes 8 R sub-pixels arranged in two separate sets of 2 x 2 arrays; the sub-pixel unit 310 includes 8 G sub-pixels arranged in a 24 array.
  • the sub-pixel unit 311 includes eight B sub-pixels arranged in a 2 x 4 array. As shown in Fig. 3A, sub-pixel units 309, 310 and 311 are adjacent to each other.
  • the repeating unit composed of the sub-pixel sheets 309, 310 and 311 extends in the lateral direction and the longitudinal direction to form the pixel arrangement of the color filter provided in this embodiment.
  • every 8 or 4 sub-pixels of the same color are arranged together. Assuming that the area of one sub-pixel is 3 units 2 , the average length of the boundary line of each square sub-pixel from the sub-pixel unit 310 or 311 is 2.6 units, and the average length of the boundary line per square sub-pixel from the sub-pixel unit 309 is 3.46 units. Both are shorter than the boundary length of the conventionally arranged strip pixels (aspect ratio 3/1). Therefore, color crosstalk due to light diffusion can be reduced.
  • a plurality of sub-pixels of the same color are twisted together, and thus the mask used in the process of manufacturing the color filter is used. The area of the opening corresponds to a plurality of pixels, which reduces the risk of misalignment of the mask, thereby further reducing color crosstalk.
  • FIG. 4A is a plan view showing a pixel arrangement of a color filter of a high-resolution full-color top-emission type organic electroluminescence display according to a third embodiment of the present invention
  • FIG. 4B is a pixel of a pixel unit according to a third embodiment of the present invention
  • a top view of the arrangement; repeating the pixel unit 40 shown in FIG. 4B, the arrangement of the color filter pixels shown in FIG. 4A can be formed.
  • the pixel unit 40 includes eight pixels, i.e., 401, 402, 403, 404, 405, 406, 407. 408, arranged in two rows in a clockwise direction.
  • Each pixel includes a square sub-pixel R, a square sub-pixel G and a square sub-pixel B.
  • the R sub-pixel, the G sub-pixel, and the B sub-pixel are arranged in an L shape or an inverted L shape.
  • a plurality of pixels are arranged in a "complementary" manner as shown in FIG. 4B, and sub-pixels of the same color are twisted together, and sub-pixels of the same color are formed to form sub-pixel units 409, 410, and 411, in each sub-pixel.
  • the pixel unit includes four sub-pixels of the same color.
  • the sub-pixel unit 409 includes four R sub-pixels
  • the sub-pixel unit 410 includes four G sub-pixels
  • the sub-pixel unit 411 includes four B sub-pixels.
  • the pixel arrangement of the color filter shown in FIG. 4A can be formed by repeating the pixel unit 40, wherein the sub-pixel unit 409 includes 6 R sub-pixels from the pixels 402, 403, 406, 407, or from the pixels 405, 408, 401. , 404, wherein the pixels 405, 408, 401, 404 are from four adjacent pixel units 20, respectively.
  • the sub-pixel unit 410 includes four G sub-pixels from the pixels 403, 404, 405, 406, or from the pixels 408, 407, 402, 401;
  • the sub-pixel unit 411 includes four B sub-pixels from the pixels 401, 402, 407, 408, or from pixels 406, 405, 404, 403.
  • Sub-pixel units 409, 410, and 411 are arranged adjacent laterally. As shown in FIG. 4A, if the sub-pixels indicated by gray are not considered, the pixel arrangement of the entire color filter is composed of a plurality of sub-pixel units 409, 410, and 411. That is to say, the pixel arrangement of the color filter provided in this embodiment can also be repeated by using another repeating unit composed of the sub-pixel units 409, 410, and 411.
  • each of the sub-pixel units includes four sub-pixels of the same color arranged in a 2 ⁇ 2 array, and the colors of the sub-pixel units 409, 410, and 411 are different from each other, for example,
  • the pixel unit 409 includes 4 R sub-pixels
  • the sub-pixel unit 410 includes 4 G sub-pixels
  • the sub-pixel unit 411 includes 4 B sub-pixels
  • the plurality of sub-pixel units 409, 410, and 411 are adjacent in the lateral direction, and are arranged in 2 X 6 array.
  • the repeating unit composed of the sub-pixel units 409, 410, and 411 sequentially extends in the lateral direction, shifting the repeating unit downward in the longitudinal direction, and shifting the distance of one sub-pixel unit plus one sub-pixel to the left; Translating, and translating a sub-pixel unit to the right by a sub-pixel distance... extending longitudinally in this manner, forming the pixel arrangement of the color filter provided by the present embodiment.
  • the average length of the boundary line of each square sub-pixel (the line between two sub-pixels of different colors) is shortened compared to the conventional strip-shaped pixel arrangement. For example, assuming that the area of one sub-pixel is 3 units 2 , the average length of each sub-pixel boundary line is 3.46 units, which is significantly shorter than that of the conventional strip sub-pixel (aspect ratio of 3/1). Therefore, color crosstalk can be reduced.
  • a plurality of sub-pixels of the same color are twisted together, so that the area of the opening of the mask used in manufacturing the color filter corresponds to a plurality of pixels, and the mask pair can be reduced.
  • Example 4 5A and 5B wherein FIG. 5A is a plan view of a pixel arrangement of a color filter of a high-resolution full-color top-emission type organic electroluminescence display according to a fourth embodiment of the present invention; FIG. 5B is a fourth aspect of the present invention.
  • FIG. 5A is a plan view of a pixel arrangement of a color filter of a high-resolution full-color top-emission type organic electroluminescence display according to a fourth embodiment of the present invention
  • FIG. 5B is a fourth aspect of the present invention.
  • a plan view of the pixel arrangement of the pixel unit of the embodiment; repeating the pixel unit 50 shown in FIG. 5B, the arrangement of the color filter pixels shown in FIG. 5A can be formed.
  • the pixel unit 50 includes four pixels 501, 502, 503, 504 arranged in two rows in a clockwise direction.
  • Each pixel includes one square R sub-pixel, one square G sub-pixel and two square B sub-pixels.
  • four sub-pixels are arranged in a 2 x 2 array, and two B sub-pixels are arranged in a diagonal. That is, the adjacent 1 , G, and B sub-pixels are L-shaped or inverted L-shaped.
  • Each pixel in the pixel unit 50 has a different sub-pixel arrangement, a plurality of pixels are arranged together, and the sub-pixels of the same color are twisted together, and the sub-pixels of the same color are formed into the sub-pixel units 505, 506 And 507, including sub-pixels of the same color in each sub-pixel unit, for example, the sub-pixel unit 505 includes 4 R sub-pixels, the sub-pixel unit 506 includes 4 G sub-pixels, and the sub-pixel unit 507 includes 8 B sub-pixels. .
  • the pixel arrangement of the color filter can be formed by repeating the pixel unit 50.
  • the pixel arrangement of the entire color filter is composed of a plurality of sub-pixel units 505, 506, and 507. That is to say, the pixel arrangement of the color filter provided by this embodiment can also be repeated by using another repeating unit composed of sub-pixel units 505, 506 and 507.
  • the colors of the sub-pixel units 505, 506, and 507 are different from each other, for example, the sub-pixel unit 505 includes four R sub-pixels arranged in a 2 ⁇ 2 array, and the sub-pixel unit 506 includes four G sub-pixels arranged in a 2 X 2 array, and sub-pixel unit 507 includes eight B sub-pixels arranged in two sets of 2 x 2 arrays. Sub-pixel units 505, 506, and 507 Arranged in a 2 2 array, where two sets of sub-pixel units 507 are located at opposite corners of the array.
  • the repeating unit composed of the sub-pixel units 505, 506, and 507 sequentially extends in the lateral direction and the longitudinal direction to form the pixel arrangement of the color filter provided in the present embodiment.
  • each sub-pixel unit is different in color from the surrounding sub-pixel unit.
  • each pixel may also include one square sub-pixel, one square R sub-pixel and two square G sub-pixels, or one square sub-pixel, one square G sub-pixel and 2 square R sub-pixels, where the same color is located diagonally.
  • every four sub-pixels of the same color are arranged together. Assuming that the area of one sub-pixel is 3 units 2 , the average length of the boundary line per square sub-pixel is 3.46 units, which is shorter than the conventionally arranged strip sub-pixel (aspect ratio of 3/1). Therefore, it is possible to reduce color crosstalk due to light diffusion.
  • the color filter provided in this embodiment a plurality of sub-pixels of the same color are twisted together, so that the area of the opening of the mask used in manufacturing the color filter corresponds to a plurality of pixels, and the mask pair can be reduced. The risk of being inaccurate further reduces color crosstalk.
  • FIG. 6A is a plan view of a pixel arrangement of a color filter of a high-resolution full-color top-emission type organic electroluminescence display according to a fifth embodiment of the present invention
  • FIG. 6B is a fifth aspect of the present invention.
  • a plan view of the pixel arrangement of the pixel unit of the embodiment; repeating the pixel unit 60 shown in FIG. 6B, the arrangement of the color filter pixels shown in FIG. 6A can be formed.
  • the pixel unit 60 includes four pixels 601, 602, 603, 604 arranged in two rows in a clockwise direction. Each pixel includes one square R sub-pixel, one square G sub-pixel, one square B sub-pixel, and one W sub-pixel. In each pixel, four sub-pixels are arranged in a 2 ⁇ 2 array.
  • each sub-pixel unit 605 includes 4 R sub-pixels
  • sub-pixel unit 606 includes 4 G sub-pixels
  • sub-pixel unit 607 includes 4 B.
  • Sub-pixel, sub-pixel unit 608 includes 4 W sub-pixels.
  • the pixel arrangement of the color filters can be formed by repeating the pixel unit 60.
  • the pixel arrangement of the entire color filter is composed of a plurality of sub-pixel units 605, 606, 607, and 608. That is to say, the pixel arrangement of the color filter provided in this embodiment can also be repeated by using another repeating unit composed of sub-pixel units 605, 606, 607 and 608.
  • the sub-pixel unit 605 includes four R sub-pixels arranged in a 2 ⁇ 2 array.
  • the sub-pixel unit 606 includes four G sub-pixels arranged in a 2 ⁇ 2 array, the sub-pixel unit 607 includes four sub-pixels arranged in a 2 ⁇ 2 array, and the sub-pixel unit 608 includes four arrays arranged in a 2 ⁇ 2 array. W subpixels.
  • Sub-pixel units 605, 606, 607, and 608 are arranged in a 2 2 array.
  • the repeating unit composed of the sub-pixel units 605, 606, 607, and 608 is sequentially extended in the lateral direction and the longitudinal direction to form the pixel arrangement of the color filter provided in the present embodiment.
  • every four sub-pixels of the same color are arranged together. Assuming that the area of one sub-pixel is 4 units 2 , the average length of the boundary line of each sub-pixel is 4 units, which is shorter than the conventional arrangement of strip-shaped sub-pixels (aspect ratio 4/1, boundary line length of 8 units). Therefore, color crosstalk due to light diffusion can be reduced. In addition, color filter sub-pixels and WOLED pixels can also be reduced. Misalignment and further reduce color crosstalk.
  • each sub-pixel size of the conventional strip sub-pixel is 12 x 3 ⁇ ⁇
  • the square sub-pixel size of the embodiment 5 is 6 x 6 ⁇ ⁇ .
  • a WOLED pixel below the B sub-pixel is turned on and is assumed to produce 50,000 units of light.
  • Table 1 shows the light collected by each sub-pixel. Although the WOLED pixels under the R, G, and W sub-pixels are off, the R, G, and W sub-pixels still receive light due to light spreading. Therefore, the degree of color crosstalk is defined as (the light received by the R sub-pixel + the light received by the G sub-pixel + the light received by the sub-pixel) /0000.
  • the color crosstalk is reduced by ⁇ 50%.
  • a plurality of sub-pixels of the same color are twisted together, so that the area of the opening of the mask used in manufacturing the color filter corresponds to a plurality of pixels, and the mask pair can be reduced. The risk of being inaccurate.
  • the arrangement of the sub-pixels is not limited to the arrangement shown in FIGS. 2 to 6.
  • the R, G, B, W sub-pixels can exchange positions with each other, for example, replace all R sub-pixels with G sub-pixels, and replace all G sub-pixels with R sub-pixels.
  • the color filter pixel arrangement in the fourth embodiment can be obtained.
  • the high-resolution full-color top-emission type organic electroluminescent display according to the present invention can reduce light diffusion to a large extent.
  • the misalignment of the color filter pixels and the WOLED pixels can be reduced, and the color crosstalk of the high-resolution full-color top-emission type organic electroluminescence display can be further alleviated.
  • Fig. 7 is a plan view showing a pixel arrangement of a color filter of a high-resolution full-color top-emission type organic electroluminescence display according to a sixth embodiment of the present invention.
  • Each of the square pixel units 70 includes two right triangle pixels 701, 702, and the two right triangle pixels complement each other to form a square pixel unit 70.
  • Each of the right-angled triangular pixels 701, 702 includes a right-angled triangular sub-pixel R, a right-angled triangular sub-pixel G, a right-angled triangular sub-pixel ⁇ , a right-angled triangular sub-pixel W, and two right-angled triangular pixels 701, 702 with respect to the respective oblique
  • the edges are mirror images of each other, thus causing the sub-pixels of the same color to be tied together.
  • the pixel units adjacent thereto can be obtained, and the obtained pixel unit is mirror-inverted in the same manner, and the square pixel unit 70 can be obtained.
  • the pixel arrangement provided in this embodiment can be obtained by repeating each pixel unit of the next nearest neighbor. That is, in the pixel arrangement provided by this embodiment, any pixel unit and its adjacent pixel unit are mirror-symmetrical with respect to a boundary line between the two, so that the sub-pixels of the same color are twisted together.
  • the pixel units are arranged in mirror images, the sub-pixels of the same color are arranged together, and the average length of the boundary line of each sub-pixel (the line between two sub-pixels of different colors) compared with the conventional strip-shaped pixel arrangement. Will be shortened.
  • a plurality of sub-pixels of the same color are twisted together, so that the area of the opening of the mask used in manufacturing the color filter corresponds to a plurality of pixels, and the mask pair can be reduced. The risk of being inaccurate further reduces color crosstalk.

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Abstract

一种彩色滤光片，包括多个重复的像素单元（20）。每个像素单元（20）包括多个像素，每个像素包括R子像素，G子像素和B子像素。在每个像素中，R子像素，G子像素和B子像素排列成L形或倒L形。多个像素以互补的方式排列，使颜色相同的子像素挨在一起。还公开了一种包括彩色滤光片的有机电致发光显示器。

Description

全彩顶部发光型有机电致发光显示器的彩色滤色片 技术领域
本发明涉及一种滤色片的像素排列， 更具体地， 本发明涉及一种用于 改进高分辨率、 全彩且顶部发光的有机电致发光显示器的色彩饱和度的滤 色片像素排列。 背景技术
有机发光二极管 （OLED, 或有机电致发光器件） 具有工作温度范围 宽、 功耗低、 视角广、 对比度高以及响应时间快等优点， 被称为下一代的 平板显示器。根据光发射方向， OLED结构可分为底部发光型和顶部发光型。 底部发光型 OLED的光从透明衬底出射。 而顶部发光型 OLED利用一个反射 的底部电极使得光从半透明或透明的顶部电极出射。 对于有源矩阵显示器 来说， 顶部发光 OLED具有优势， 因其不仅提供高开口率， 而且可以与不透 明的、 如单晶硅的背板衬底相集成。
图 1A描述了一个全彩有机顶部发光的电致发光显示器的剖面图。 顶部 发光 OLED沉积于背板衬底 1上， 背板衬底 1上具有有源矩阵驱动器和图案化 的反射像素底部电极 10。 顶部发光 OLED由多个有机层 11组成， 诸如空穴传 输层、 发光层和电子传输层等等， 多个有机层夹在一个反射底部电极 10和 一个半透明或者透明的顶部电极 12之间。 所使用的有机材料可以是小分子 或聚合物。 顶部发光 OLED通过透明介质 13封装， 透明介质诸如多个薄膜叠 层或一个玻璃薄片。 为了实现高分辨率全彩显示， 采用白光（W ) OLED, 其发出的白光含有红光（R ) , 绿光（G ) 和蓝光（B ) 成份； 图案化的滤 色片像素 14被放置到封装后的白光 OLED( WOLED )的顶部，并与白光 OLED ( WOLED ) 的像素对准， 将白光分解为红、 绿、 蓝光。 滤色片 14包括多个 子像素， 如1 、 G、 8或1 、 G、 B、 W等， 他们排列成特定的图案。
图 1B 是一个传统条状滤色片的像素排列的顶视图， 在这里像素 15由一 个 R子像素 16, —个 G子像素 17和一个 B子像素 18组成。 通过重复像素 15可 获得整个面板的像素排列图案。 R子像素 16吸收绿光（G ) 和蓝光（B ) 而 透射红光1 。 G子像素 17吸收红光（R ) 和蓝光（B ) 而透射绿光 G。 B子像 素 18吸收红光（R ) 和绿光（G ) 而透射蓝光 B。 在这样的排列中， 每个子 像素， 例如 G子像素 17, 被两个相邻的不同颜色的 R子像素 16和 B子像素 18 包围。 当 WOLED发出的朗伯光通过封装介质 13 (见图 1A ) 到达滤色片时， 会不可避免的发生扩散。扩散的光照射到相邻的 R子像素 16和 B子像素 18上， 会导致色彩串扰， 降低 G子像素 17的色彩饱和度， 并因此降低整个显示面板 的色域。 在高分辨率显示例如微型显示器中这种效应更加明显。 如对于典 型的有机发光致发光微显示器，在 0.6英寸的显示区域具有 SVGA分辨率，每 个子像素的大小为 15 x 3 μ ηι。 这样小尺寸的子像素， 颜色有一点点串扰也 会明显地降低色彩的饱和度。
光扩散导致的色彩串扰的程度与边界线 19的长度成比例。 该边界线 19 指分开两个不同颜色的子像素的线。 假设一个子像素的面积为 3 units2 (高 宽比 3/1 ) , 那么每个条状子像素边界线长度是 6 units。 另外色彩串扰也可 能由滤色片子像素和 WOLED像素的未对准而导致。
为了抑制由于光扩散产生的色串扰， 可以减少封装媒介 13的厚度， 或 降低面板的开口率 （实际像素发光区域 /像素区域） 。 尽管这两种方法都能 有效的抑制色串扰， 这两种方法都会缩短 OLED的寿命。 发明内容
因此， 本发明的目的在于克服上述现有技术的缺陷， 提供一种高分辨率 全彩顶部发光型有机电致发光显示器的滤色片的像素排列， 减少色彩串扰因 而改善面板色域。 在不减少封装媒介厚度或面板开口率情况下， 利用本发明 所述的滤色片的排列， 能显著的增加面板的色域。
本发明的另一目的是减少滤色片子像素和 WOLED像素的对准偏差， 并因 此进一步的降低高分辨率全彩顶部发光型有机电致发光显示器的色彩串扰。
为了达到以上本项发明的目的， 本发明的滤色片的像素排列达成： 两个 不同颜色的子像素之间的边界线的长度最 d、化。
基于上述的指导思想， 本发明所提供的彩色滤色片， 包括多个重复的像 素单元， 每个像素单元包括多个像素， 每个像素包括 R子像素、 G子像素和 B 子像素， 其中在每个像素中， R子像素、 G子像素和 B子像素排列成 L形或倒 L 形， 多个像素以互补的方式排列， 使颜色相同的子像素挨在一起。
根据本发明提供的彩色滤色片， 其中每个像素单元包括 12个像素， 每 6个 相同颜色的子像素挨在一起。
根据本发明提供的彩色滤色片， 其中每个像素单元包括 8个像素， 每 8个 相同颜色的子像素挨在一起。 根据本发明提供的彩色滤色片， 其中每个像素单元包括 8个像素， 每 4个 相同颜色的子像素挨在一起。
根据本发明提供的彩色滤色片， 其中每个像素单元包括 4个像素， 每个像 素除包括1 、 G、 B子像素外， 还包括一个 X子像素， R、 G、 B、 X四个子像素 排列成 2 2阵列。 每 4个相同颜色的子像素挨在一起。
根据本发明提供的彩色滤色片， 其中 X子像素为 W子像素。
根据本发明提供的彩色滤色片， 其中 X子像素为^ B、 G子像素中的任意 一个， 与 X子像素颜色相同的子像素不相邻于 X子像素。
本发明提供了另一种彩色滤色片， 包括多个像素单元， 每个像素单元包 括两个三角形像素， 每个三角形像素包括一个三角形 R子像素、 一个三角形 G子像素、 一个三角形 B子像素和一个三角形 W子像素， 两个三角形像素镜 像对称， 任意相邻的两个像素单元镜像对称， 使得颜色相同的子像素挨在一 起。
根据本发明提供的彩色滤色片， 其中像素为直角三角形， R子像素、 G子 像素、 B子像素和 W子像素为直角三角形。
本发明还提供一种具有彩色滤色片的有机电致发光显示器。
因为本发明提供的滤色片中， 多个相同颜色的子像素挨在一起， 因此 在制造滤色片过程中所使用的掩膜的开口的面积对应于多个像素， 而现有 技术中掩膜开口对应于单个像素， 因此本发明的滤色片的制造过程中， 可 减少掩膜对位不准的风险。 附图说明 以下参照附图对本发明实施例作进一步说明， 其中：
图 1 A现有技术中全彩顶部发光型有机电致发光显示器的剖面图； 图 1B 现有技术中条状滤色片的像素排列的俯视图；
图 2A 是根据本发明第一实施例的高分辨率全彩顶部发光型有机电致 发光显示器的彩色滤色片像素排列的俯视图；
图 2B是根据本发明第一实施例的像素单元的像素排列的俯视图； 图 3 A 是根据本发明第二实施例的高分辨率全彩顶部发光型有机电致 发光显示器的彩色滤色片的像素排列的俯视图；
图 3B 是根据本发明第二实施的像素单元的像素排列的俯视图； 图 4A是根据本发明第三实施例的高分辨率全彩顶部发光型有机电致发 光显示器的彩色滤色片的像素排列的俯视图；
图 4B是根据本发明第三实施例的像素单元的像素排列的俯视图； 图 5A是根据本发明第四实施例的高分辨率全彩顶部发光型有机电致发 光显示器的彩色滤色片的像素排列的俯视图；
图 5B是根据本发明第四实施例的像素单元的像素排列的俯视图； 图 6A是根据本发明第五实施例的高分辨率全彩顶部发光型有机电致发 光显示器的彩色滤色片的像素排列的俯视图；
图 6B是根据本发明第五实施例的像素单元的像素排列的俯视图； 图 7是根据本发明第六实施例的像素单元的像素排列的俯视图。
如图所示， 为了能明确说明本发明的实施例的结构， 在图中标注了特定 的结构和器件， 但这仅为示意需要， 并非意图将本发明限定在该特定结构、 器件和环境中， 根据具体需要， 本领域的普通技术人员可以将这些器件和环 境进行调整或者修改， 所进行的调整或者修改仍然包括在后附的权利要求的 范围中。 具体实施方式
以下结合附图和实施例对本发明进行详细描述， 其中， 在以下的描述中， 将描述本发明的多个不同的方面， 然而， 对于本领域内的普通技术人员而言， 可以仅仅利用本发明的一些或者全部结构或者流程来实施本发明。 为了解释 的明确性而言， 阐述了特定的数目、 配置和顺序， 但是 4艮明显， 在没有这些 特定细节的情况下也可以实施本发明。 在其他情况下， 为了不混淆本发明， 对于一些众所周知的特征将不再进行详细阐述。
实施例 1
参见图 2A和图 2B,其中图 2A是根据本发明第 1实施例的高分辨率全彩 顶部发光型有机电致发光显示器的彩色滤色片像素排列的俯视图； 图 2B是根 据本发明第 1实施例的像素单元的像素排列的俯视图；对图 2B中示出的像素 单元 20进行重复， 即可形成图 2A所示的滤色片像素的排列。
见图 2B,像素单元 20包含 12个像素 201, 202, 203, 204,205, 206, 207, 208, 209, 210, 211, 212, 按照顺时针方向排列成 2排。 每个像素包含一个方形 R子 像素， 一个方形 G子像素和一个方形 B子像素， 每个像素中， R子像素、 G 子像素和 B子像素排列成 L形或倒 L形。像素单元 20中的每个像素拥有不同 的子像素排列方式。 多个像素以图 2B所示的 "互补" 的方式排列， 且使颜色 相同的子像素挨在一起， 挨在一起的颜色相同的子像素形成子像素单元 213、 214和 215 , 在每一子像素单元中包含 6个颜色相同的子像素， 例如子像素单 元 213包含 6个 R子像素， 子像素单元 214包含 6个 G子像素， 子像素单元 215包含 6个 B子像素。
重复像素单元 20即可形成图 2A所示的彩色滤色片的像素排列， 其中： 子像素单元 213包含的 6个 R子像素来自像素 202, 203, 204, 209, 210, 211 , 或来自像素 208, 207, 212,205, 206, 201 , 其中像素 208, 207, 212,205, 206, 201 分别来自四个相邻的像素单元 20。 同理， 子像素单元 214包含的 6个 G子像 素来自像素 204, 205,206, 207, 208, 209 , 或来自像素 210, 211, 212, 201, 202, 203。 子像素单元 215包含的 6个 B子像素来自像素 206, 201, 202, 207, 212, 211 , 或来自像素 210, 209, 208, 203, 204, 205 »
子像素单元 213、 214和 215横向相邻排列。 如图 2A所示，假如不考虑 用灰色表示的子像素， 那么整个滤色片的像素排列由多个子像素单元 213,214 和 215构成。 也就是说， 本实施例提供的滤色片的像素排列也可利用另一种 由子像素单元 213、 214和 215构成的重复单元重复而成。
由子像素单元 213、 214和 215构成的重复单元中， 每个子像素单元包括 6个颜色相同的排列成 2 x 3阵列的子像素， 子像素单元 213、 214和 215的颜 色互不相同， 例如子像素单元 213包括 6个 R子像素， 子像素单元 214包括 6个 G子像素，子像素单元 215包括 6个 B子像素，多个子像素单元 213、 214 和 215在横向上相邻， 并排列成 2 X 9阵列。
由子像素单元 213、 214和 215构成的重复单元在横向上依次延伸， 在纵 向上， 将该重复单元向下平移， 并向左平移一个子像素单元加上一个子像素 的距离； 然后再向下平移， 并向右平移一个子像素单元加上一个子像素的距 离…以此方式纵向延伸， 形成本实施例提供的滤色片的像素排列。 因为每 6个相同颜色的子像素排列在一起， 与传统的条状像素排列相比， 每个方形子像素的边界线（两个不同颜色的子像素之间的线） 的平均长度会 缩短。 例如， 假设一个子像素的面积为 3units2, 那么每个子像素边界线平均长 度为 2.89 units, 与传统的条状子像素 （高宽比 3/1 )排列相比显著缩短。 因为 色彩串扰的程度与边界线的长度是成比例的， 因此可以降低色彩串扰。 另夕卜， 子像素单元的面积是单个子像素面积的 6倍； 因此很容易地使子像素单元与 WOLED像素精确地对准， 所以可以减少滤色片子像素和 WOLED像素的未对 准， 因而可进一步的减轻色彩串扰。 实施例 2
图 3A是根据本发明第 2实施例的高分辨率全彩顶部发光型有机电致发 光显示器的彩色滤色片的像素排列的俯视图； 图 3B 是根据本发明第 2 实施 的像素单元的像素排列的俯视图； 对图 3B中示出的像素单元 30进行重复， 即可形成图 3A所示的滤色片像素的排列。
见图 3A图 3B,像素单元 30包含 8个像素，即， 301, 302, 303, 304,305, 306, 307, 308, 按照顺时针方向排列成 2排。 每个像素包含一个方形 R子像素， 一 个方形 G子像素和一个方形 B子像素。 每个像素中， R子像素、 G子像素和 B子像素排列成 L形或倒 L形。像素单元 30中的每个像素拥有不同的子像素 排列方式， 多个像素以图 3B所示的 "互补" 的方式排列， 且颜色相同的子像 素挨在一起，挨在一起的颜色相同的子像素形成子像素单元 309、 310和 311 , 在每一子像素单元中包含 8个颜色相同的子像素，例如子像素单元 309包含 8 个 R子像素（每 4个 R子像素挨在一起） ， 子像素单元 310包含 8个 G子像 素， 子像素单元 311包含 8个 B子像素。
重复像素单元 30即可形成彩色滤色片的像素排列 ,其中 1)子像素单元 309 包含的 8个 R子像素来自像素 302, 303, 306, 307, 305, 308, 301, 304; 2)子像 素单元 310包含的 8个 G子像素来自像素 301, 302, 303, 304,305, 306, 307, 308; 3)子像素单元 311包含的 8 个 B子像素来自像素 301, 302, 303, 304,305, 306, 307, 308。
见图 3A, 如果不考虑用灰色表示的子像素， 那么整个滤色片的像素排列 由多个子像素单元 309,310和 311构成。也就是说， 本实施例提供的滤色片的 像素排列也可利用另一种由子像素单元 309,310和 311构成的重复单元重复而 成。
由子像素单元 309,310和 311构成的重复单元中， 子像素单元 309包括 8 个 R子像素， 排列成两组分离的 2 x 2阵列； 子像素单元 310包括 8个排列成 2 4阵列的 G子像素； 子像素单元 311包括 8个排列成 2 x 4阵列的 B子像 素。 如图 3A所示， 子像素单元 309,310和 311彼此相邻。
由子像素单 309,310和 311构成的重复单元在横向上和纵向上延伸，形成 本实施例提供的滤色片的像素排列。
在本实施列中， 每 8个或 4个相同颜色的子像素排列在一起。 假设一个 子像素的面积为 3 units2, 来自子像素单元 310或 311的每个方形子像素的边 界线平均长度为 2.6units, 来自子像素单元 309的每平方子像素边界线平均长 度是 3.46 units, 都比传统排列的条状像素（高宽比 3/1 )的边界线长度短。 所 以， 可以减少由于光扩散导致的色彩串扰。 另外本实施例提供的滤色片中， 多个相同颜色的子像素挨在一起， 因此在制造滤色片过程中所使用的掩膜 的开口的面积对应于多个像素， 可减少掩膜对位不准的风险， 故进一步减轻 色彩串扰。 实施例 3
图 4A是根据本发明第 3实施例的高分辨率全彩顶部发光型有机电致发光 显示器的彩色滤色片的像素排列的俯视图； 图 4B是根据本发明第 3实施例的 像素单元的像素排列的俯视图； 对图 4B中示出的像素单元 40进行重复， 即 可形成图 4A所示的滤色片像素的排列。
参见图 4B, 像素单元 40包含 8个像素，即， 401, 402, 403, 404,405, 406, 407. 408, 按照顺时针方向排列成 2排。 每个像素包含一个方形子像素 R, —个方 形子像素 G和一个方形子像素 B, 每个像素中， R子像素、 G子像素和 B子 像素排列成 L形或倒 L形。 多个像素以图 4B所示的 "互补" 的方式排列， 且 使颜色相同的子像素挨在一起， 挨在一起的颜色相同的子像素形成子像素单 元 409、 410和 411 , 在每一子像素单元中包含 4个颜色相同的子像素， 例如 子像素单元 409包含 4个 R子像素， 子像素单元 410包含 4个 G子像素， 子 像素单元 411包含 4个 B子像素。
重复像素单元 40即可形成图 4A所示的彩色滤色片的像素排列， 其中子 像素单元 409包含的 6个 R子像素来自像素 402, 403, 406, 407, 或来自像素 405, 408, 401, 404, 其中像素 405, 408, 401, 404分别来自四个相邻的像素单元 20。 同理， 子像素单元 410包含的 4个 G子像素来自像素 403, 404, 405, 406, 或来自像素 408, 407,402, 401；子像素单元 411包含的 4个 B子像素来自像素 401, 402, 407, 408, 或来自像素 406, 405, 404, 403。 子像素单元 409、 410和 411横向相邻排列。 如图 4A所示，假如不考虑 用灰色表示的子像素，那么整个滤色片的像素排列由多个子像素单元 409、 410 和 411 构成。 也就是说， 本实施例提供的滤色片的像素排列也可利用另一种 由子像素单元 409、 410和 411构成的重复单元重复而成。
由子像素单元 409、 410和 411构成的重复单元中， 每个子像素单元包括 4个颜色相同的排列成 2 X 2阵列的子像素， 子像素单元 409、 410和 411的颜 色互不相同， 例如子像素单元 409包括 4个 R子像素， 子像素单元 410包括 4个 G子像素，子像素单元 411包括 4个 B子像素，多个子像素单元 409、 410 和 411在横向上相邻， 并排列成 2 X 6阵列。
由子像素单元 409、 410和 411构成的重复单元在横向上依次延伸， 在纵 向上， 将该重复单元向下平移， 并向左平移一个子像素单元加上一个子像素 的距离； 然后再向下平移， 并向右平移一个子像素单元加上一个子像素的距 离…以此方式纵向延伸， 形成本实施例提供的滤色片的像素排列。
因为每 4个相同颜色的子像素排列在一起， 与传统的条状像素排列相比， 每个方形子像素的边界线 （两个不同颜色的子像素之间的线） 的平均长度会 缩短。 例如， 假设一个子像素的面积为 3units2, 那么每个子像素边界线平均 长度为 3.46 units, 与传统的条状子像素（高宽比 3/1 )排列相比显著缩短。 因 此可以降低色彩串扰。 另外本实施例提供的滤色片中， 多个相同颜色的子像 素挨在一起， 因此在制造滤色片过程中所使用的掩膜的开口的面积对应于 多个像素， 可减少掩膜对位不准的风险， 进一步的减轻色彩串扰。 实施例 4 参见图 5A和 5B,其中图 5A是根据本发明第 4实施例的高分辨率全彩顶 部发光型有机电致发光显示器的彩色滤色片的像素排列的俯视图； 图 5B是根 据本发明第 4实施例的像素单元的像素排列的俯视图；对图 5B中示出的像素 单元 50进行重复， 即可形成图 5A所示的滤色片像素的排列。
见图 5B, 像素单元 50包含 4个像素 501, 502, 503, 504, 按照顺时针方 向排列成 2排。 每个像素包含 1个方形 R子像素， 1个方形 G子像素和 2个 方形 B子像素， 每个像素中， 4个子像素排列成 2 x 2阵列， 2个 B子像素排 列在对角， 即相邻的1 、 G、 B子像素呈 L形或倒 L形。 像素单元 50中的每 个像素拥有不同的子像素排列方式， 多个像素排列在一起， 且使颜色相同的 子像素挨在一起， 挨在一起的颜色相同的子像素形成子像素单元 505、 506和 507, 在每一子像素单元中包含颜色相同的子像素， 例如子像素单元 505包含 4个 R子像素， 子像素单元 506包含 4个 G子像素， 子像素单元 507包含 8 个 B子像素。
重复像素单元 50即可形成彩色滤色片的像素排列。
如图 5A所示，假如不考虑用灰色表示的子像素， 那么整个滤色片的像素 排列由多个子像素单元 505、 506和 507构成。 也就是说， 本实施例提供的滤 色片的像素排列也可利用另一种由子像素单元 505、 506和 507构成的重复单 元重复而成。
由子像素单元 505、 506和 507构成的重复单元中， 子像素单元 505、 506 和 507的颜色互不相同， 例如子像素单元 505包括 4个排列成 2 X 2阵列的 R 子像素， 子像素单元 506包括 4个排列成 2 X 2阵列的 G子像素， 子像素单元 507包括 8个排列成两组 2 x 2阵列的 B子像素。 子像素单元 505、 506和 507 排列成 2 2阵列， 其中子像素单元 507的两组位于阵列的对角。
由子像素单元 505、506和 507构成的重复单元在横向和纵向上依次延伸， 形成本实施例提供的滤色片的像素排列。 在该滤色片的像素排列中， 每一子 像素单元与周围的子像素单元的颜色不同。
本发明的实施例中，每个像素也可以包含 1个方形 Β子像素， 1个方形 R 子像素和 2个方形 G子像素， 或包含 1个方形 Β子像素， 1个方形 G子像素 和 2个方形 R子像素， 其中相同的颜色位于对角。
本实施例中， 每 4个相同颜色的子像素排列在一起。 假设一个子像素的 面积为 3 units2, 那么每平方子像素的边界线平均长度为 3.46units, 比传统排 列的条状子像素（高宽比 3/1 )短。 因此， 可以实现减少由于光扩散导致的色 彩串扰。 另外本实施例提供的滤色片中， 多个相同颜色的子像素挨在一起， 因此在制造滤色片过程中所使用的掩膜的开口的面积对应于多个像素， 可 减少掩膜对位不准的风险， 进一步减轻色彩串扰。 实施例 5
参见图 6A和 6B,其中图 6A是根据本发明第 5实施例的高分辨率全彩顶 部发光型有机电致发光显示器的彩色滤色片的像素排列的俯视图； 图 6B是根 据本发明第 5实施例的像素单元的像素排列的俯视图；对图 6B中示出的像素 单元 60进行重复， 即可形成图 6A所示的滤色片像素的排列。
见图 6B, 像素单元 60包含 4个像素 601, 602, 603, 604, 按照顺时针方 向排列成 2排。每个像素包含 1个方形 R子像素， 1个方形 G子像素、 1个方 形 B子像素和 1个 W子像素， 每个像素中， 4个子像素排列成 2 X 2阵列。 像 素单元 60中的每个像素拥有不同的子像素排列方式， 多个像素排列在一起， 且使颜色相同的子像素挨在一起， 挨在一起的颜色相同的子像素形成子像素 单元 605、 606、 607和 608, 在每一子像素单元中包含颜色相同的子像素， 例 如子像素单元 605包含 4个 R子像素， 子像素单元 606包含 4个 G子像素， 子像素单元 607包含 4个 B子像素， 子像素单元 608包含 4个 W子像素。
重复像素单元 60即可形成彩色滤色片的像素排列。
如图 6A所示，假如不考虑用灰色表示的子像素， 那么整个滤色片的像素 排列由多个子像素单元 605、 606、 607和 608构成。 也就是说， 本实施例提 供的滤色片的像素排列也可利用另一种由子像素单元 605、 606、 607和 608 构成的重复单元重复而成。
由子像素单元 605、 606、 607和 608构成的重复单元中，子像素单元 605、 606、 607和 608的颜色互不相同， 例如子像素单元 605包括 4个排列成 2 χ 2 阵列的 R子像素，子像素单元 606包括 4个排列成 2 X 2阵列的 G子像素，子 像素单元 607包括 4个排列成 2 X 2阵列的 Β子像素， 子像素单元 608包括 4 个排列成 2 X 2阵列的 W子像素。 子像素单元 605、 606、 607和 608排列成 2 2阵列。
由子像素单元 605、 606、 607和 608构成的重复单元在横向和纵向上依 次延伸， 形成本实施例提供的滤色片的像素排列。
在本实施例中， 每 4个相同颜色的子像素排列在一起。 假设一个子像素 的面积为 4units2, 那么每个子像素的边界线平均长度为 4units, 比传统排列的 条状子像素 （高宽比 4/1 , 边界线长度为 8units )短。 因此， 可以减少由于光 扩散导致的色彩串扰。 另外， 也可以减少色彩滤色片子像素和 WOLED像素 的未对准， 并进一步减轻色彩串扰。
在表 1 中， 对传统像素排列和实施例 5的像素排列的色彩串扰程度进行 比较， 数据由 TracePro仿真产生。
Figure imgf000017_0001
假设传统条状子像素的每个子像素尺寸为 12 x 3 μ πι, 居实施例 5的 正方形子像素尺寸为 6 x 6 μ ιη。在 B子像素下面的一个 WOLED像素被打开 并假定其产生 50000单位的光线。 表 1示出了被各子像素收集的光线。 尽管 在 R，G和 W子像素下面的 WOLED像素处于关闭状态，但是由于光扩散， R,G 和 W子像素仍会接收到光线。因此色彩串扰的程度被定义为 (R子像素接收到 的光线 +G子像素接收到的光线 +W子像素接收到的光线 )/50000。 从表 1可以 清楚的看到， 利用根据实施例 5的滤色片像素排列， 色彩串扰减少了〜 50%。 另外本实施例提供的滤色片中， 多个相同颜色的子像素挨在一起， 因此在 制造滤色片过程中所使用的掩膜的开口的面积对应于多个像素， 可减少掩 膜对位不准的风险。
15
替换页 (细则第 26条） 另外， 实施例 1至实施例 5中， 子像素的排列并不限于图 2至图 6中所 示的排列。 R、 G、 B、 W子像素之间可互相交换位置， 例如将所有的 R子像 素替换成 G子像素， 并将所有的 G子像素替换成 R子像素。 又例如将实施例 5中的 W子像素替换成 B子像素， 即可得到实施例 4中的滤色片像素排列。
根据本发明的高分辨率全彩顶部发光型有机电致发光显示器可以在^艮大 程度上减少光扩散。 另外， 也可以减少彩色滤色片像素和 WOLED像素的未 对准， 并进一步减轻高分辨率全彩顶部发光型有机电致发光显示器的色彩串 扰。
实施例 6
参见图 7,是根据本发明第 6实施例的高分辨率全彩顶部发光型有机电致 发光显示器的彩色滤色片的像素排列的俯视图。
其中每个方形的像素单元 70包括两个直角三角形像素 701,702, 两个直 角三角形像素互补形成方形像素单元 70。 每个直角三角形像素 701,702分别 包括一个直角三角形子像素 R, —个直角三角形子像素 G,—个直角三角形子 像素 Β, —个直角三角形子像素 W, 两个直角三角形像素 701,702相对于各自 的斜边互为镜像， 因此使得颜色相同的子像素挨在一起。
以方形像素单元 70的四条边为对称轴， 向其四周作镜像翻转， 可得到与 其相邻的各像素单元， 对所得的像素单元以相同的方式再进行镜像翻转， 可 得到与方形像素单元 70次近邻的各个像素单元， 如此重复， 即可得到本实施 例提供的像素排列。 即本实施例提供的像素排列中， 任意像素单元与其相邻 的像素单元相对于两者之间的边界线镜像对称， 因此使得颜色相同的子像素 挨在一起。 因为像素单元之间为镜像排列， 相同颜色的子像素排列在一起， 与传统 的条状像素排列相比， 每个子像素的边界线 （两个不同颜色的子像素之间的 线）的平均长度会缩短。 另外本实施例提供的滤色片中， 多个相同颜色的子 像素挨在一起， 因此在制造滤色片过程中所使用的掩膜的开口的面积对应 于多个像素， 可减少掩膜对位不准的风险， 进一步的减轻色彩串扰。
最后应说明的是， 以上实施例仅用以描述本发明的技术方案而不是对本 技术方法进行限制， 本发明在应用上可以延伸为其他的修改、 变化、 应用和 实施例， 并且因此认为所有这样的修改、 变化、 应用、 实施例都在本发明的 精神和教导范围内。

Claims

1. 一种彩色滤色片， 包括多个重复的像素单元， 每个像素单元包括多个 像素， 每个像素包括 R子像素、 G子像素和 B子像素， 其中在每个像素中， R子像素、 G子像素和 B子像素排列成 L形或倒 L形， 多个像素以互补的方 式排列， 使颜色相同的子像素挨在一起。
2. 根据权利要求 1所述的彩色滤色片， 其中每个像素单元包括 12个像 素， 每 6个相同颜色的子像素挨在一起。
3. 根据权利要求 1所述的彩色滤色片，其中每个像素单元包括 8个像素， 每 8个相同颜色的子像素挨在一起。
4. 根据权利要求 1所述的彩色滤色片，其中每个像素单元包括 8个像素， 每 4个相同颜色的子像素挨在一起。
5. 根据权利要求 1所述的彩色滤色片，其中每个像素单元包括 4个像素， 每个像素除包括1 、 G、 B子像素外， 还包括一个 X子像素， R、 G、 B、 X四 个子像素排列成 2 x 2阵列。
6. 根据权利要求 5所述的彩色滤色片， 其中每 4个相同颜色的子像素挨 在一起。
7. 根据权利要求 5所述的彩色滤色片， 其中 X子像素为 W子像素。
8. 根据权利要求 5所述的彩色滤色片， 其中 X子像素为 R、 B、 G子像 素中的任意一个。
9. 根据权利要求 8所述的彩色滤色片， 其中与 X子像素颜色相同的子像 素不相邻于 X子像素。
10. 一种彩色滤色片， 包括多个像素单元，每个像素单元包括两个三角形 像素， 每个三角形像素包括一个三角形 R子像素、 一个三角形 G子像素、 一 个三角形 B子像素和一个三角形 W子像素， 两个三角形像素镜像对称， 任意 相邻的两个像素单元镜像对称， 使得颜色相同的子像素挨在一起。
11. 根据权利要求 10所述的彩色滤色片， 其中像素为直角三角形， R子 像素、 G子像素、 B子像素和 W子像素为直角三角形。
12. 一种有机电致发光显示器， 具有如权利要求 1或权利要求 10所述的 彩色滤色片。
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CN106129095A (zh) * 2014-06-13 2016-11-16 上海和辉光电有限公司 一种oled像素排列结构
CN105552099A (zh) * 2014-10-29 2016-05-04 上海和辉光电有限公司 一种oled像素排列结构

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