WO2024021416A1 - Structure d'agencement de pixels, écran d'affichage et ensemble masque - Google Patents

Structure d'agencement de pixels, écran d'affichage et ensemble masque Download PDF

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Publication number
WO2024021416A1
WO2024021416A1 PCT/CN2022/135400 CN2022135400W WO2024021416A1 WO 2024021416 A1 WO2024021416 A1 WO 2024021416A1 CN 2022135400 W CN2022135400 W CN 2022135400W WO 2024021416 A1 WO2024021416 A1 WO 2024021416A1
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WIPO (PCT)
Prior art keywords
pixel
sub
pixels
blue
blue sub
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PCT/CN2022/135400
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English (en)
Chinese (zh)
Inventor
姜庆
夏兴达
廖辉华
郑浩旋
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惠科股份有限公司
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Publication of WO2024021416A1 publication Critical patent/WO2024021416A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/04—Coating on selected surface areas, e.g. using masks
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/805—Electrodes
    • H10K50/82—Cathodes
    • H10K50/822—Cathodes characterised by their shape
    • 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H10K71/10—Deposition of organic active material
    • H10K71/16—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering

Definitions

  • the present application relates to the field of display technology, and in particular to a pixel arrangement structure, a display panel and a mask assembly.
  • Organic electroluminescent (OLED, Organic Light Emitting Diode) display panels have display characteristics such as autonomous light emission, large viewing angle, wide color gamut, short response time, and high contrast. At the same time, they have the advantages of being light, thin, and flexible, making them the next generation LCD display panel. The third generation display panel of the monitor.
  • the color display of the display panel is realized by the superposition of sub-pixels of three colors of R, G and B with different brightness.
  • the arrangement of the sub-pixels has an important impact on the display effect of the screen. Since the wavelengths of visible light in red, green, and blue colors decrease in sequence, the lifespans of red, green, and blue luminescent materials become shorter in sequence. In addition, the human eye has the strongest perception of green light, followed by red light and weakest perception of blue light. If the pixel areas of the three colors of sub-pixels are the same, long-term use will cause a color cast on the display panel. Related technology can improve the life of the display panel by setting the shape and position of the three color sub-pixels, but the change in shape will affect the pixel aperture ratio of the display panel.
  • This application aims to provide a pixel arrangement structure, a display panel and a mask assembly, which can ensure the life of the display panel while also having a high pixel aperture ratio.
  • an embodiment of the present application proposes a pixel arrangement structure including multiple repeating pixel units.
  • Each repeating pixel unit includes a red sub-pixel, a green sub-pixel and a blue sub-pixel, wherein the multiple repeating pixel units Distributed in rows and columns, in each repeated pixel unit, the light-emitting area of the red sub-pixel is greater than the light-emitting area of the green sub-pixel and less than or equal to the light-emitting area of the blue sub-pixel.
  • embodiments of the present application provide a display panel, including a base substrate and a plurality of sub-pixels disposed on the base substrate.
  • the plurality of sub-pixels have a pixel arrangement structure as described above.
  • embodiments of the present application provide a mask assembly for forming the pixel arrangement structure as described above, including: a first mask plate, with a first evaporation opening provided on the first mask plate , the first evaporation opening is configured to form a red sub-pixel; the second mask plate is provided with a second evaporation opening, and the second evaporation opening is configured to form a green sub-pixel. ; And a third mask plate, the third mask plate is provided with a third evaporation opening, and the third evaporation opening is configured to form a blue sub-pixel.
  • the pixel arrangement structure, display panel and mask assembly provided by the embodiments of the present application are based on the light-emitting characteristics of red sub-pixels, green sub-pixels and blue sub-pixels, by arranging multiple repeating pixel units aligned and distributed in rows and rows.
  • the light-emitting area of the red sub-pixel is greater than the light-emitting area of the green sub-pixel and smaller than or equal to the light-emitting area of the blue sub-pixel, which can ensure the service life of the display panel while also having a high pixel aperture ratio.
  • Figure 1 shows a schematic diagram of the pixel arrangement structure provided by the first embodiment of the present application
  • Figure 2 shows a schematic structural diagram of a mask assembly provided by a second embodiment of the present application
  • Figure 3 shows a schematic diagram of the pixel arrangement structure provided by the third embodiment of the present application.
  • Figure 4 shows a schematic structural diagram of a mask assembly provided by the fourth embodiment of the present application.
  • Figure 5 shows a schematic diagram of the pixel arrangement structure provided by the fifth embodiment of the present application.
  • Figure 6 shows a schematic structural diagram of a mask assembly provided by the sixth embodiment of the present application.
  • Figure 7 shows a schematic diagram of the pixel arrangement structure provided by the seventh embodiment of the present application.
  • Figure 8 shows a schematic structural diagram of a mask assembly provided by the eighth embodiment of the present application.
  • Figure 9 shows a schematic diagram of the pixel arrangement structure provided by the ninth embodiment of the present application.
  • Figure 10 shows a schematic structural diagram of a mask assembly provided by the tenth embodiment of the present application.
  • Figure 11 shows a schematic diagram of the pixel arrangement structure provided by the eleventh embodiment of the present application.
  • Figure 12 shows a schematic structural diagram of the mask assembly provided by the twelfth embodiment of the present application.
  • Figure 13 shows a schematic diagram of the pixel arrangement structure provided by the thirteenth embodiment of the present application.
  • Figure 14 shows a schematic structural diagram of the mask assembly provided by the fourteenth embodiment of the present application.
  • Figure 15 shows a schematic structural diagram of a display panel provided by the fifteenth embodiment of the present application.
  • Figure 16 shows a schematic diagram of a pixel circuit of a pixel unit in an example of this application.
  • the display panel may be an OLED display panel, which includes a substrate and a plurality of sub-pixels arranged on the substrate, and the plurality of sub-pixels have a pixel arrangement structure as described below.
  • the first embodiment of the present application provides a pixel arrangement structure, including multiple repeating pixel units PU.
  • Each repeating pixel unit PU includes a red sub-pixel R, a green sub-pixel G and a blue sub-pixel. B, wherein multiple repeating pixel units PU are distributed in rows and columns.
  • the light-emitting area of the red sub-pixel R is greater than the light-emitting area of the green sub-pixel G and is less than or equal to the light-emitting area of the blue sub-pixel B. .
  • the lifespan of the luminescent materials of the red sub-pixel R, green sub-pixel G, and blue sub-pixel B with the same light-emitting area becomes shorter in sequence.
  • blue Sub-pixel B has the shortest service life
  • red sub-pixel R has the longest service life.
  • the light-emitting area of the blue sub-pixel B can be increased.
  • the human eye has the strongest perception of green light, followed by red light and weakest perception of blue light.
  • the light-emitting area of the green sub-pixel G can be reduced and the blue light can be increased at the same time.
  • the light-emitting area of sub-pixel B is the longest service life, and red sub-pixel R has the longest service life.
  • the light-emitting area of the red sub-pixel R is set to be larger than the light-emitting area of the green sub-pixel G, and at the same time, the light-emitting area of the red sub-pixel R is smaller than or equal to the light-emitting area of the blue sub-pixel B, which can be used during the service life. Achieve a balance between the display effect and the display effect to avoid color cast on the display panel during use.
  • the pixel arrangement structure and display panel provided by the embodiment of the present application are based on the luminescence characteristics of the red sub-pixel R, the green sub-pixel G and the blue sub-pixel B.
  • Multiple repeating pixel units PU are arranged in rows and rows, each repeating In the pixel unit PU, the light-emitting area of the red sub-pixel R is larger than the light-emitting area of the green sub-pixel G and smaller than or equal to the light-emitting area of the blue sub-pixel B, which can ensure the service life of the display panel while also having a high pixel aperture ratio. .
  • the shape of the red sub-pixel R and the blue sub-pixel B is both a rectangle
  • the shape of the green sub-pixel G is a square
  • the width of the red sub-pixel R or the blue sub-pixel B is equal to the side of the green sub-pixel G.
  • the lengths are equal, and the length of the red sub-pixel R or the blue sub-pixel B is greater than the side length of the green sub-pixel G.
  • each repeating pixel unit PU there are red sub-pixels R, green sub-pixels G and blue sub-pixels B. Shown with different fill shading respectively, in which the red sub-pixel R and the blue sub-pixel B are both rectangular in shape, the green sub-pixel G is square in shape, and the width of the red sub-pixel R or the blue sub-pixel B is the same as that of the green sub-pixel R.
  • the side lengths of the sub-pixels G are equal, and the length of the red sub-pixel R or the blue sub-pixel B is greater than the side length of the green sub-pixel G. Due to the regular shape of each color sub-pixel in each repeated pixel unit PU, the light-emitting area can be made as large as possible, which is beneficial to improving the pixel aperture ratio.
  • the repeating pixel unit PU includes one red sub-pixel R, two green sub-pixels G and one blue sub-pixel B, where the red sub-pixel R and one green sub-pixel G are located in the same column, and the blue sub-pixel Pixel B and another green sub-pixel G are located in the same column, and the two green sub-pixels G are arranged diagonally.
  • the light-emitting areas of the red sub-pixel R and the blue sub-pixel B are equal, and the length of the red sub-pixel R or the blue sub-pixel B is three times the side length of the green sub-pixel G.
  • a red sub-pixel R and a green sub-pixel G are located in the same column
  • a blue sub-pixel B and another green sub-pixel G are located in the same column
  • two green sub-pixels G are located in the same column.
  • the width of the red sub-pixel R or the blue sub-pixel B is equal to the side length of the green sub-pixel G, and the red sub-pixel R or the blue sub-pixel
  • the length of the color sub-pixel B is three times the side length of the green sub-pixel G, which allows the four sub-pixels in each repeated pixel unit PU to be aligned in the row and column directions, so the light-emitting area can be made as large as possible Large, which is conducive to further improving the pixel aperture ratio.
  • each sub-pixel is controlled by a 2T1C pixel circuit.
  • the pixel circuit of each sub-pixel is connected to the data line and the scan line. And it is partially connected to the driver chip through data lines and scan lines.
  • the driver chip transmits data signals, current signals, etc. to the pixel circuit through data lines and scan lines, and the pixel circuit controls the lighting or extinguishing of each sub-pixel.
  • S(n) is the scanning line
  • D(n) is the data line
  • T1 is the first thin film transistor
  • T2 is the second thin film transistor
  • C1 is the capacitor
  • OLED is the light emitting device
  • PVDD is the high voltage signal input terminal.
  • PVEE is the low voltage signal input terminal.
  • the pixel circuit diagram shown in Figure 16 can also be used for pixel driving, and more complex display driving can also be realized through adjustment and optimization of the driver chip and pixel circuit.
  • the sub-pixels of each color include an organic light-emitting material layer.
  • the organic light-emitting material layer is formed by vacuum evaporation coating of organic materials of the corresponding color.
  • the pixel arrangement structure uses a Fine Metal Mask (FMM) to control the coating position of organic materials of different colors on the substrate.
  • the mask plate is generally made of Invar alloy (INVAR), and the thickness is generally 20-40 ⁇ m.
  • Invar is a nickel-iron alloy that has an extremely low coefficient of thermal expansion and can maintain a fixed length over a wide temperature range.
  • the mask is placed between the substrate and the evaporation device.
  • Organic light-emitting materials of corresponding colors are placed in the evaporation device to evaporate sub-pixels of different colors on the substrate.
  • the second embodiment of the present application also provides a mask assembly for forming a pixel arrangement structure as shown in Figure 1.
  • the mask assembly includes: a first mask 1 , the second mask plate 2 and the third mask plate 3.
  • a first evaporation opening 11 is provided on the first mask plate 1.
  • the first evaporation opening 11 is configured to form a red sub-pixel R.
  • the shape and arrangement of the first evaporation opening 11 are consistent with the pixel arrangement structure.
  • Each red sub-pixel R has a one-to-one correspondence.
  • the second mask plate 2 is provided with a second evaporation opening 21.
  • the second evaporation opening 21 is configured to form the green sub-pixel G.
  • the shape and arrangement of the second evaporation opening 21 are consistent with the pixel arrangement structure.
  • Each green sub-pixel G has a one-to-one correspondence.
  • the third mask plate 3 is provided with a third evaporation opening 31.
  • the third evaporation opening 31 is configured to form the blue sub-pixel B.
  • the shape and arrangement of the third evaporation opening 31 are consistent with the pixel arrangement structure.
  • Each blue sub-pixel B corresponds to one-to-one.
  • the first mask 1 is first placed between the substrate and the evaporation device, and a red organic light-emitting material is placed in the evaporation device to evaporate the red sub-pixel R on the substrate; then the first mask 1 is removed.
  • Mask plate 1 place the second mask plate 2 between the substrate and the evaporation device, and place the green organic light-emitting material in the evaporation device to evaporate the green sub-pixel G on the substrate; then remove the second mask plate 2.
  • Mask plate 2 the third mask plate 3 is placed between the substrate and the evaporation device, and the blue organic light-emitting material is placed in the evaporation device to evaporate the blue sub-pixel B on the substrate.
  • a pixel arrangement structure with multiple repeating pixel units PU arranged in rows and rows is formed on the substrate as shown in FIG. 1 .
  • the evaporation sequence can also be in other ways, such as evaporating green sub-pixels G, red sub-pixels R, and blue sub-pixels B in sequence, or evaporating blue sub-pixels B, red sub-pixels R, and green sub-pixels in sequence. Sub-pixel G, etc. will not be described again.
  • the pixel arrangement structure provided by the third embodiment of the present application is similar to the pixel arrangement structure provided by the first embodiment.
  • the difference is that the positions of the red sub-pixel R and the blue sub-pixel are reversed.
  • the technical effects are similar to those of the first embodiment and will not be described again.
  • the fourth embodiment of the present application also provides a mask assembly, which has a similar structure to the mask assembly provided in the second embodiment.
  • the difference lies in that the mask assembly used for evaporation in the fourth embodiment
  • the second mask plate 2 for plating the red sub-pixel R is the same as the third mask plate 3 for evaporating the blue sub-pixel B in the second embodiment.
  • the evaporation sequence is as described above and will not be described again.
  • the pixel arrangement structure provided by the fifth embodiment of the present application is similar to the pixel arrangement structure provided by the first embodiment, except that the arrangement of sub-pixels in the repeated pixel unit PU is different.
  • the repeating pixel unit PU includes a first pixel unit U1, a second pixel unit U2, a third pixel unit U3 and a distribution in two rows and two columns.
  • the fourth pixel unit U4, the first pixel unit U1 and the second pixel unit U2 are located in the same row and symmetrically distributed, the third pixel unit U3 and the fourth pixel unit U4 are located in the same row and symmetrically distributed, the first pixel unit U1 and the third pixel unit U4 are located in the same row and symmetrically distributed.
  • Pixel units U3 are located in the same column and distributed symmetrically.
  • the first pixel unit U1 includes one red sub-pixel R, two green sub-pixels G and one blue sub-pixel B, where the red sub-pixel R and one green sub-pixel G are located in the same row, and the blue sub-pixel B and Another green sub-pixel G is located in the same row, and the two green sub-pixels G are arranged diagonally.
  • the red sub-pixels R and the blue sub-pixels B in the first pixel unit U1, the second pixel unit U2, the third pixel unit U3 and the fourth pixel unit U4 are respectively arranged in two rows and two columns.
  • Four of the green sub-pixels G are scattered at the four corners of the repeating pixel unit PU, and the other four green sub-pixels G are concentrated in the center of the repeating pixel unit PU.
  • the light-emitting areas of the red sub-pixel R and the blue sub-pixel B are equal, and the length of the red sub-pixel R or the blue sub-pixel B is three times the side length of the green sub-pixel G.
  • the four green sub-pixels G located at the center of each repeating pixel unit PU can be shared with each other, and the four green sub-pixels G located at the corners of the repeating pixel unit PU can be shared with the three adjacent repeating pixel units PU respectively.
  • the green sub-pixels G are shared with each other, thereby increasing the proportion of the green sub-pixel G and enhancing the display effect.
  • the adjacent four blue sub-pixels B, four green sub-pixels G and four red sub-pixels R are arranged in two rows and two columns in alignment.
  • the openings in the mask can be made larger, thereby reducing the manufacturing accuracy of the mask and the difficulty of pixel evaporation, thereby facilitating the design of higher resolution rate display panel.
  • the blue sub-pixel B has a larger light-emitting area.
  • the sixth embodiment of the present application also provides a mask assembly, which is similar in structure to the mask assembly provided in the second embodiment. The difference lies in that the evaporation openings of each mask are The structure is different.
  • the first mask plate 1, the second mask plate 2 and the The three mask plates 3 can be respectively provided with a larger evaporation opening corresponding to each color sub-pixel arranged in two rows and two columns, or the evaporation opening corresponding to four sub-pixels of the same color can be set to " "Tian" shape, compared with setting a corresponding evaporation opening for each sub-pixel, the gap between the evaporation openings corresponding to adjacent sub-pixels can be reduced, and the gap between adjacent sub-pixels is no longer limited. Due to the manufacturing accuracy of the mask, the resolution and aperture ratio of the display panel are improved.
  • the pixel arrangement structure provided by the seventh embodiment of the present application is similar to the pixel arrangement structure provided by the fifth embodiment, except that the arrangement of sub-pixels in the repeated pixel unit PU is different.
  • the repeating pixel unit PU includes a fifth pixel unit U5 and a sixth pixel unit U6 located in the same row and arranged symmetrically.
  • the fifth pixel unit U5 includes One red sub-pixel R, two green sub-pixels G and one blue sub-pixel B, where the red sub-pixel R and one green sub-pixel G are located in the same column, and the blue sub-pixel B and another green sub-pixel G are located in the same column column, and the two green sub-pixels G are arranged diagonally.
  • the green sub-pixel G and the red sub-pixel R in the fifth pixel unit U5 and the sixth pixel unit U6 are respectively located in the same row and adjacently arranged, and each of the two adjacent repeated pixel units PU has The blue sub-pixels B are located in the same row and are arranged adjacently.
  • the light-emitting areas of the red sub-pixel R and the blue sub-pixel B are equal, and the length of the red sub-pixel R or the blue sub-pixel B is three times the side length of the green sub-pixel G.
  • the two adjacent green sub-pixels G, red sub-pixels R and blue sub-pixels B are respectively located in the same row and adjacent to each other, and the third Compared with the technical solution in which the four green sub-pixels G and the four red sub-pixels R are arranged in two rows and two columns in the embodiment, the distribution of the green sub-pixel G, the red sub-pixel R and the blue sub-pixel B can be made more precise. Uniform and closer to the desired display color, which can further improve the display effect.
  • sub-pixels of the same color located in the same row and adjacent to each other can be shared with each other.
  • the green sub-pixel G When one of them, such as the green sub-pixel G, fails, it can be compensated by the light emission of the adjacent green sub-pixel G to improve the overall quality as much as possible. display effect.
  • the blue sub-pixel B has a larger light-emitting area, which can improve the life of the entire pixel arrangement structure.
  • the eighth embodiment of the present application also provides a mask assembly, which has a similar structure to the mask assembly provided in the sixth embodiment. The difference lies in that the evaporation openings of each mask are The structure is different.
  • the first mask plate 1, the second mask plate 2 and the second mask plate 2 are arranged adjacent to each other.
  • the three-mask plate 3 can be provided with a larger evaporation opening corresponding to the above-mentioned two color sub-pixels located in the same row and adjacent to each other, or between the evaporation openings corresponding to the two sub-pixels of the same color.
  • the gap between the evaporation openings corresponding to adjacent sub-pixels can be reduced, and the gap between adjacent sub-pixels can be reduced.
  • the gap is no longer limited by the manufacturing accuracy of the mask, thereby improving the resolution and aperture ratio of the display panel.
  • the pixel arrangement structure provided by the ninth embodiment of the present application is similar to the pixel arrangement structure provided by the first embodiment. The difference lies in the arrangement of sub-pixels in the repeated pixel unit PU.
  • the repeating pixel unit PU includes a seventh pixel unit U7, an eighth pixel unit U8, a ninth pixel unit U9, and a seventh pixel unit U7 distributed in two rows and two columns.
  • the tenth pixel unit U10, the seventh pixel unit U7 and the eighth pixel unit U8 are located in the same row and are symmetrically distributed.
  • the ninth pixel unit U9 and the tenth pixel unit U10 are located in the same row and are symmetrically distributed.
  • the seventh pixel unit U7 and the ninth pixel unit U7 are located in the same row and are symmetrically distributed.
  • Pixel units U9 are located in the same column and distributed symmetrically.
  • the seventh pixel unit U7 includes a red sub-pixel R, a green sub-pixel G and a blue sub-pixel B.
  • the red sub-pixel R and the green sub-pixel G are located in the same column, and the blue sub-pixel B is located in another column.
  • the length of the blue sub-pixel B is greater than or equal to the sum of the length of the red sub-pixel R and the side length of the green sub-pixel G.
  • the green sub-pixels G in the seventh pixel unit U7, the eighth pixel unit U8, the ninth pixel unit U9 and the tenth pixel unit U10 are concentrated in the center of the repeating pixel unit PU, and the red sub-pixels R and blue
  • the color sub-pixels B are staggered at the edge of the repeated pixel unit PU.
  • the length of the blue sub-pixel B is greater than or equal to the sum of the length of the red sub-pixel R and the side length of the green sub-pixel G, the light-emitting area of the blue sub-pixel B can be further increased and the light-emitting area of the green sub-pixel G can be reduced. , thereby improving the lifespan of the entire pixel arrangement structure.
  • one of the blue sub-pixels B for example, fails, it can be compensated by the light emission of the adjacent blue sub-pixel B to improve the overall display effect as much as possible.
  • the light-emitting area of the red sub-pixel R is three times the light-emitting area of the green sub-pixel G
  • the light-emitting area of the blue sub-pixel B is four times the light-emitting area of the green sub-pixel G.
  • the length of the blue sub-pixel B is the sum of the length of the red sub-pixel R and the side length of the green sub-pixel G.
  • the gap between the blue sub-pixel B and the red sub-pixel R is small, which can further increase the pixel opening. Rate.
  • the tenth embodiment of the present application also provides a mask assembly, which is similar in structure to the mask assembly provided in the second embodiment. The difference lies in that the evaporation openings of each mask are The structure is different.
  • the second mask plate 2 can be provided with a larger evaporation opening corresponding to the above-mentioned four green sub-pixels G, or four green sub-pixels G.
  • the evaporation opening corresponding to pixel G can be set to a "field" shape.
  • Two red sub-pixels R and two blue sub-pixels B are respectively located in the same row and arranged adjacently.
  • the first mask plate 1 and the third mask plate 3 correspond to the above-mentioned two colors located in the same row and arranged adjacently.
  • Each sub-pixel can be provided with a larger evaporation opening, or only a thin barrier can be provided between the corresponding evaporation openings of two sub-pixels of the same color.
  • the gap between the evaporation openings corresponding to adjacent sub-pixels can be reduced, and the gap between adjacent sub-pixels is no longer limited by the mask plate.
  • the production precision improves the resolution and aperture ratio of the display panel.
  • the pixel arrangement structure provided by the eleventh embodiment of the present application is similar to the pixel arrangement structure provided by the fifth embodiment.
  • the difference lies in the arrangement of sub-pixels in the repeated pixel unit PU.
  • the repeating pixel unit PU includes an eleventh pixel unit P11, a twelfth pixel unit P12, and a thirteenth pixel unit P13 distributed symmetrically around the center.
  • the eleventh pixel unit P11 includes a red sub-pixel R, a green sub-pixel G, a first blue sub-pixel B1 and a second blue sub-pixel B2, wherein the red The sub-pixel R and the green sub-pixel G are located in the same row, the first blue sub-pixel B1 and the second blue sub-pixel B2 are located in the same row, and the light-emitting area of the first blue sub-pixel B1 is larger than the second blue sub-pixel B2 of the light-emitting area, the green sub-pixel G and the second sub-pixel B2 are arranged diagonally; in the repeating pixel unit PU, the eleventh pixel unit P11, the twelfth pixel unit P12, the thirteenth pixel unit P13 and the fourteenth pixel
  • the four green sub-pixels G in the unit P14 are concentrated in the center of the repeating pixel unit PU, and the four second blue sub-pixels B2 are respectively located at the four corners of the repeat
  • the light-emitting areas of the red sub-pixel R and the first blue sub-pixel B1 are equal, the light-emitting areas of the second blue sub-pixel B2 and the green sub-pixel G are equal, and either the red sub-pixel R or the first blue sub-pixel B1 has the same light-emitting area.
  • the length of pixel B1 is three times the side length of green sub-pixel G.
  • each pixel unit (P11 or P12 or P13 or P14) is provided with a first blue sub-pixel B1 and a second blue sub-pixel B2, which is equivalent to increasing the blue color in a single pixel unit.
  • the area of the sub-pixel improves the life of the blue sub-pixel in a single pixel unit, thereby improving the service life of the entire pixel unit; at the same time, because the four green sub-pixels G located in the center of each repeated pixel unit PU can be shared with each other, That is, each pixel unit (P11 or P12 or P13 or P14) uses the four green sub-pixels G in the center of the PU, thereby increasing the proportion of green sub-pixels G in each pixel unit (P11 or P12 or P13 or P14). , thereby improving the display brightness of the pixel unit and enhancing the display effect.
  • each pixel unit (P11 or P12 or P13 or P14) is driven by a single pixel circuit, and each pixel circuit is connected to the driving chip through data lines and scan lines.
  • the driving control method is: when the red sub-pixel is required to emit light, the pixel circuit controls the red sub-pixel to emit light; when the green sub-pixel is required to emit light, the pixel circuit controls the green sub-pixel and three adjacent green sub-pixels. (that is, the four green sub-pixels in the center of each PU) emit light; when the blue sub-pixel is required to emit light, the pixel circuit controls the second blue sub-pixel to emit light and the first blue sub-pixel not to emit light; thus achieving a single Pixel unit lighting control.
  • the pixel circuit controls the second blue sub-pixel to emit main light and the first blue sub-pixel to emit weak light.
  • the second blue sub-pixel As the auxiliary light-emitting part of the blue sub-pixel, the first blue sub-pixel jointly realizes blue light emission; by weakening and controlling the light-emitting current of the first blue sub-pixel, the life of the first blue sub-pixel is extended as much as possible.
  • the second blue sub-pixel is damaged, by controlling the current of the first blue sub-pixel to increase, the first blue sub-pixel becomes blue-emitting.
  • Dominate the sub-pixels thereby ensuring the normal operation and light emission of the blue sub-pixels, thereby ensuring the normal light emission of the display panel, and extending the service life of the display panel.
  • the light emission control of a single pixel unit is realized; here, when controlling the light emission, the second blue sub-pixel is used as the blue light-emitting part that dominates the light emission, and the first blue sub-pixel is used as the blue light-emitting part of the auxiliary light emission. , or simply not lighting up the first blue sub-pixel, thereby further extending the life of the blue sub-pixel, thereby improving the service life of the pixel unit and the display panel.
  • the first blue sub-pixel may be a light blue sub-pixel
  • the second blue sub-pixel may be a dark blue sub-pixel
  • the twelfth embodiment of the present application also provides a mask assembly, which has a similar structure to the mask assembly provided in the sixth embodiment, except that the green sub-pixel G and the blue sub-pixel The structure of the evaporation opening corresponding to pixel B is different.
  • the four second evaporation openings 21 of the second mask 2 are distributed together, and the third mask 3 includes third evaporation openings 31 respectively corresponding to the first blue sub-pixel B1 and corresponding The fourth evaporation opening 32 of the second blue sub-pixel B2.
  • the pixel arrangement structure provided by the thirteenth embodiment of the present application is similar to the pixel arrangement structure provided by the seventh embodiment, except that the arrangement of sub-pixels in the repeated pixel unit PU is different.
  • the repeating pixel unit PU includes a fifteenth pixel unit P15 and a sixteenth pixel unit P16 located in the same row and arranged symmetrically.
  • the fifteenth pixel The unit P15 includes a red sub-pixel R, a green sub-pixel G, a first blue sub-pixel B1 and a second blue sub-pixel B2, and the light-emitting area of the first blue sub-pixel B1 is larger than that of the second blue sub-pixel B1.
  • the light-emitting area of pixel B2 in which the red sub-pixel R and a first blue sub-pixel B1 are located in the same column, the green sub-pixel G and the second blue sub-pixel B2 are located in the same column, and the green sub-pixel G and the second blue sub-pixel B2 are located in the same column.
  • the color sub-pixel B is arranged diagonally; in the repeating pixel unit PU, the two second blue sub-pixels B2 and red sub-pixels R in the fifteenth pixel unit P15 and the sixteenth pixel unit P16 are respectively located in the same row and opposite. Neighbor settings.
  • the light-emitting areas of the red sub-pixel R and the first blue sub-pixel B1 are equal, the light-emitting areas of the second blue sub-pixel B2 and the green sub-pixel G are equal, and either the red sub-pixel R or the first blue sub-pixel B1 has the same light-emitting area.
  • the length of pixel B1 is three times the side length of green sub-pixel G.
  • the two second blue sub-pixels B2 of the fifteenth pixel unit P15 and the sixteenth pixel unit P16 can be shared with each other to improve the luminescence ratio and lifespan of the blue sub-pixel B. Furthermore, the current of the first blue sub-pixel B1 can be further reduced to increase the service life of the blue sub-pixel B.
  • the other second blue sub-pixel B2 may be damaged.
  • the blue sub-pixel B2 continues to emit light as a backup sub-pixel or a compensation sub-pixel, controlling its current size, thereby extending the service life of the display panel.
  • each pixel unit (P15 or P16) is driven by a single pixel circuit, and each pixel circuit is connected to the driver chip through data lines and scan lines.
  • the driving control method is that the pixel circuit controls each pixel unit to emit light. Specifically, when the green sub-pixel is required to emit light, the pixel circuit controls the green sub-pixel to emit light; when the red sub-pixel is required to emit light, the pixel circuit controls the red sub-pixel to emit light.
  • the word pixel emits light; when the blue sub-pixel is required to emit light, the pixel circuit controls the first blue sub-pixel, the second blue sub-pixel and the second blue sub-pixel of the adjacent pixel unit in the PU to emit blue light.
  • the blue sub-pixel emits light
  • the blue light emission is greatly increased in a single pixel unit. Therefore, the luminous current of the first blue sub-pixel and the second blue sub-pixel can be directly reduced (such as 0.8 times the standard current I), and a better display effect can be achieved; at this time, due to the reduction of the blue
  • the current in the light-emitting part further extends the life of the blue sub-pixel, thereby further extending the life of the pixel unit and the display panel.
  • each repeated pixel unit PU two pixel units share each other's second blue sub-pixel, that is, the second blue sub-pixel is a common pixel part.
  • the first blue sub-pixel may be a light blue sub-pixel
  • the second blue sub-pixel may be a dark blue sub-pixel
  • the pixel arrangement structure provided by the fourteenth embodiment of the present application is similar to the pixel arrangement structure provided by the eighth embodiment.
  • the difference lies in that the evaporation structure corresponding to the green sub-pixel G and the blue sub-pixel B is The structure of the plated opening is different.
  • the four second evaporation openings 21 of the second mask 2 are spaced apart, and the third mask 3 includes a third evaporation opening 31 respectively corresponding to the first blue sub-pixel B1 and a third evaporation opening 31 corresponding to the first blue sub-pixel B1.
  • the eleventh embodiment of the present application also provides a display panel, including a base substrate 10 and a plurality of sub-pixels P disposed on the base substrate 10.
  • the plurality of sub-pixels P are as described above. Any kind of pixel arrangement structure.
  • the display panel also includes an encapsulation layer 12 covering the plurality of sub-pixels P to protect the sub-pixels from being eroded by dust, water vapor and other impurities.
  • the display panel in the embodiment of the present application can also be another self-luminous display panel driven in an active matrix (Active Matrix, AM) manner similar to an OLED display panel, which will not be described again.
  • active matrix Active Matrix
  • base substrate refers to the material upon which subsequent layers of material are added.
  • the base substrate itself can be patterned. Material added atop the base substrate may be patterned, or may remain unpatterned.
  • the base substrate may include a wide range of materials, such as silicon, germanium, gallium arsenide, indium phosphide, and the like.
  • the base substrate may be made of a non-conductive material (eg, glass, plastic, or sapphire wafer, etc.).
  • the term "layer” as used herein may refer to a portion of material that includes a region of thickness.
  • a layer may extend over the entire underlying or overlying structure, or may have an extent that is smaller than the extent of the underlying or overlying structure.
  • a layer may be a region of a homogeneous or non-homogeneous continuous structure, the thickness of which is less than the thickness of the continuous structure.
  • a layer may be located between the top and bottom surfaces of the continuous structure or between any pairs of transverse planes at the top and bottom surfaces.
  • the layers may extend laterally, vertically and/or along tapered surfaces.
  • the base substrate may be a layer, may include one or more layers therein, and/or may have one or more layers on, above, and/or below it.
  • a layer may include multiple layers.
  • interconnect layers may include one or more conductor and contact layers within which contacts, interconnect lines, and/or vias are formed, and one or more dielectric layers.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
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  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
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Abstract

L'invention concerne une structure d'agencement de pixels, un écran d'affichage et un ensemble masque. La structure d'agencement de pixels comprend une pluralité d'unités de pixels de répétition (PU), et chaque unité de pixels de répétition (PU) comprend un sous-pixel rouge (R), des sous-pixels verts (G) et un sous-pixel bleu (B), la pluralité d'unités de pixels de répétition (PU) étant alignées et réparties en rangées et en colonnes, et dans chaque unité de pixels de répétition (PU), la zone d'émission de lumière du sous-pixel rouge (R) étant supérieure à la zone d'émission de lumière des sous-pixels verts (G) et inférieure ou égale à la zone d'émission de lumière du sous-pixel bleu (B). La structure d'agencement de pixels assure la durée de vie d'un écran d'affichage et a également un rapport d'ouverture de pixels élevé.
PCT/CN2022/135400 2022-07-29 2022-11-30 Structure d'agencement de pixels, écran d'affichage et ensemble masque WO2024021416A1 (fr)

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