WO2020215401A1 - Dispositif électroluminescent et son procédé de fabrication, et panneau d'affichage - Google Patents

Dispositif électroluminescent et son procédé de fabrication, et panneau d'affichage Download PDF

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Publication number
WO2020215401A1
WO2020215401A1 PCT/CN2019/086873 CN2019086873W WO2020215401A1 WO 2020215401 A1 WO2020215401 A1 WO 2020215401A1 CN 2019086873 W CN2019086873 W CN 2019086873W WO 2020215401 A1 WO2020215401 A1 WO 2020215401A1
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Prior art keywords
pixel
primary color
photo sub
sub
color photo
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PCT/CN2019/086873
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English (en)
Chinese (zh)
Inventor
王坤
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武汉华星光电半导体显示技术有限公司
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Publication of WO2020215401A1 publication Critical patent/WO2020215401A1/fr

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    • 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
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • 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
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/1201—Manufacture or treatment
    • 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
    • H10K59/352—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels the areas of the RGB subpixels being different
    • 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

Definitions

  • This application relates to the technical field of display panels, and in particular to a light-emitting device and a manufacturing method thereof, and a display panel.
  • red (R), green (G), and blue (B) three primary color pixels are juxtaposed (side-by-side pixelation) is the most mature development. Technology.
  • the pentile-type sub-pixel arrangement is generally adopted, that is, different aperture ratios are set for different sub-pixels, usually blue sub-pixels and The red sub-pixel has the largest aperture ratio to make up for its shortcomings in life and efficiency.
  • a pixel in the pentile arrangement will "borrow" another color of its neighboring pixel to form the three primary colors to achieve white display together, which will result in low resolution and color Jagged edges and edges.
  • the present application provides a light-emitting device, a manufacturing method thereof, and a display panel, so as to avoid the problems of low resolution, color fringing, and jagged edges caused by sharing sub-pixels between different pixel units.
  • the embodiment of the present application provides a light emitting device, the light emitting device includes: a plurality of pixel units arranged in an array, the pixel unit includes first primary color photo sub-pixels, second primary color photo sub-pixels, and second primary color photo sub-pixels arranged at intervals. Three primary color photo sub-pixels, in each pixel unit, the first primary color photo sub-pixel, the second primary color photo sub-pixel, and the third primary color photo sub-pixel are combined to form a circle, and the first primary color photo sub-pixel, the second primary color photo sub-pixel and the third primary color The areas of the primary color photo sub-pixels are not completely equal.
  • the first primary color photo sub-pixels, the second primary color photo sub-pixels and the third primary color photo sub-pixels all have a fan shape.
  • the central angle of the first primary color photo sub-pixel ranges from 90 to 120 degrees
  • the central angle of the second primary color photo sub-pixel ranges from 60 to 90 degrees
  • the third primary color photo sub-pixel ranges from 150 to 180 degrees.
  • the first primary color photo sub-pixel is a red photo sub-pixel
  • the second primary color photo sub-pixel is a green photo sub-pixel
  • the third primary color photo sub-pixel is a blue sub-pixel.
  • the area of the blue sub-pixel is larger than that of the red photo sub-pixel
  • the area of the red photo sub-pixel is larger than The area of the green sub-pixel.
  • the pixel unit further includes at least one compensating photo sub-pixel.
  • the first primary color photo sub-pixel, the second primary color photo sub-pixel, and the third primary color photo sub-pixel constitute a primary color photo sub-pixel group, and the compensation photo sub-pixel is located in the primary color photo sub-pixel.
  • the surrounding area of the group is not limited to the group.
  • the pixel unit further includes at least two compensating photo sub-pixels, and the at least two compensating photo sub-pixels are evenly distributed in the peripheral area of the primary color photo sub-pixel group.
  • the shape of the compensated photon pixel is rhombus, circle, ellipse, square, rectangle or polygon.
  • an embodiment of the present application provides a method for manufacturing a light emitting device.
  • the method for manufacturing the light emitting device includes: providing a substrate.
  • the substrate includes a plurality of pixel regions arranged in an array. Primary color photo sub-pixel area, second primary color photo sub-pixel area, and third primary color photo sub-pixel area.
  • the first primary color photo sub-pixel area, the second primary color photo sub-pixel area and the third primary color photo sub-pixel area are combined into a circle
  • the area of the first primary color photo sub-pixel region, the second primary color photo sub-pixel region, and the third primary color photo sub-pixel region are not completely equal; a pixel unit is formed on the pixel region, and the pixel unit includes a first primary color photo sub-pixel region.
  • the step of forming a pixel unit on the pixel region specifically includes: forming a first primary color photo sub-pixel on the first primary color photo sub-pixel region; forming a second primary color photo sub-pixel on the second primary color photo sub-pixel region; The third primary color photo sub-pixel is formed on the pixel area.
  • the pixel area also includes at least one compensation photo sub-pixel area.
  • the first primary color photo sub-pixel area, the second primary color photo sub-pixel area, and the third primary color photo sub-pixel area constitute a primary color photo sub-pixel group area to compensate the photon
  • the pixel area is located in the peripheral area of the primary color photo sub-pixel group area, and the step of forming a pixel unit on the pixel area specifically includes: using a first mask to form the first primary color photon on the first primary color photo sub-pixel area and the compensation photon pixel area Pixels; use the second mask to form the second primary color photo sub-pixel area on the second primary color photo sub-pixel area and the compensation photo sub-pixel area; use the third mask to form the third primary color photo sub-pixel area and the compensation photo sub-pixel area The third primary color photon pixel.
  • the shape of the compensation photon pixel area is rhombus, circle, ellipse, square, rectangle or polygon.
  • the shape of the first primary color photo sub-pixel area, the second primary color photo sub-pixel area and the third primary color photo sub-pixel area are all fan shapes.
  • the first primary color photo sub-pixel area is a red photo sub-pixel area
  • the second primary color photo sub-pixel area is a green photo sub-pixel area
  • the third primary color photo sub-pixel area is a blue sub-pixel area.
  • the area of the blue sub-pixel area is larger than that of the red photo sub-pixel area.
  • Area, the area of the red photo sub-pixel region is larger than that of the green photo sub-pixel region.
  • the embodiments of the present application provide a display panel including a light-emitting device, wherein the light-emitting device includes: a plurality of pixel units arranged in an array, and the pixel units include first primary color photosub-pixels arranged at intervals , The second primary color photo sub-pixel and the third primary color photo sub-pixel, in each pixel unit, the first primary color photo sub-pixel, the second primary color photo sub-pixel, and the third primary color photo sub-pixel are combined to form a circle, and the first primary color photo sub-pixel, The areas of the second primary color photo sub-pixel and the third primary color photo sub-pixel are not completely equal.
  • the first primary color photo sub-pixels, the second primary color photo sub-pixels and the third primary color photo sub-pixels all have a fan shape.
  • the central angle of the first primary color photo sub-pixel ranges from 90 to 120 degrees
  • the central angle of the second primary color photo sub-pixel ranges from 60 to 90 degrees
  • the third primary color photo sub-pixel ranges from 150 to 180 degrees.
  • the first primary color photo sub-pixel is a red photo sub-pixel
  • the second primary color photo sub-pixel is a green photo sub-pixel
  • the third primary color photo sub-pixel is a blue sub-pixel.
  • the area of the blue sub-pixel is larger than that of the red photo sub-pixel
  • the area of the red photo sub-pixel is larger than The area of the green sub-pixel.
  • the pixel unit further includes at least one compensating photo sub-pixel.
  • the first primary color photo sub-pixel, the second primary color photo sub-pixel, and the third primary color photo sub-pixel constitute a primary color photo sub-pixel group, and the compensation photo sub-pixel is located in the primary color photo sub-pixel.
  • the surrounding area of the group is not limited to the group.
  • the pixel unit further includes at least two compensating photo sub-pixels, and the at least two compensating photo sub-pixels are evenly distributed in the peripheral area of the primary color photo sub-pixel group.
  • the shape of the compensated photon pixel is rhombus, circle, ellipse, square, rectangle or polygon.
  • the light-emitting device provided by the present application includes a plurality of pixel units arranged in an array, and the pixel units include first primary color photo sub-pixels, second primary color photo sub-pixels, and second primary color photo sub-pixels arranged at intervals.
  • the pixel units include first primary color photo sub-pixels, second primary color photo sub-pixels, and second primary color photo sub-pixels arranged at intervals.
  • Three primary color photo sub-pixels, in each pixel unit, the first primary color photo sub-pixel, the second primary color photo sub-pixel, and the third primary color photo sub-pixel are combined to form a circle, and the first primary color photo sub-pixel, the second primary color photo sub-pixel and the third primary color
  • the areas of the primary color photo sub-pixels are not completely equal. Therefore, there is no need to share sub-pixels between different pixel units, which can avoid the problems of low resolution, color fringing, and edge jagging due to the sharing of sub-pixels between different pixel units.
  • Fig. 1 is a schematic structural diagram of a light emitting device provided by an embodiment of the present application
  • FIG. 2 is a schematic diagram of the effect of the light emitting device provided by the embodiment of the present application when displaying the letter "A";
  • FIG. 3 is another schematic diagram of the structure of the light emitting device provided by the embodiment of the present application.
  • FIG. 4 is another schematic diagram of the structure of the light emitting device provided by the embodiment of the present application.
  • FIG. 5 is another structural schematic diagram of a light emitting device provided by an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of a manufacturing method of a light-emitting device provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a display panel provided by an embodiment of the present application.
  • the red (R), green (G), and blue (B) three primary color pixels are usually arranged in pentile to solve the problem of red, green and blue organic light-emitting materials.
  • R red
  • G green
  • B blue
  • the technical solution adopted in this application is to provide a light emitting device to avoid the problems of low resolution, color fringing, and edge jagged due to the sharing of sub-pixels between different pixel units.
  • FIG. 1 is a schematic structural diagram of a light emitting device provided by an embodiment of the present application.
  • the light-emitting device 10 includes a substrate (not shown in the figure), and a plurality of pixel units 11 arranged in an array on the substrate.
  • the pixel unit 11 includes first primary color photo sub-pixels 111, second primary color photo sub-pixels 112, and third primary color photo sub-pixels 113 arranged at intervals.
  • the first primary color photo sub-pixel 111, the second primary color photo sub-pixel 112, and the third primary color photo sub-pixel 113 are combined to form a circle, and the first primary color photo sub-pixel 111, the second primary color photo sub-pixel 112, and the The areas of the three primary color photo sub-pixels 113 are not completely equal.
  • the areas of the first primary color photo sub-pixel 111, the second primary color photo sub-pixel 112, and the third primary color photo sub-pixel 113 are inversely proportional to the lifespan of their corresponding sub-pixels, so as to reduce the difference in lifespan between different sub-pixels, thereby extending light emission.
  • the lifetime of the device is inversely proportional to the lifespan of their corresponding sub-pixels, so as to reduce the difference in lifespan between different sub-pixels, thereby extending light emission. The lifetime of the device.
  • the first primary color photo sub-pixel 111 may be a red photo sub-pixel
  • the second primary color photo sub-pixel 112 may be a green photo sub-pixel
  • the third primary color photo sub-pixel 113 may be a blue sub-pixel. Due to the difference in the lifespan of red, green and blue organic light-emitting materials, and generally, the lifespan of blue organic light-emitting materials is shorter than that of red organic light-emitting materials, and the lifespan of red organic light-emitting materials is shorter than that of green organic light-emitting materials, that is, blue sub-pixels.
  • the lifetime of the red photo sub-pixel is lower than that of the red photo sub-pixel, and the lifetime of the red photo sub-pixel is lower than that of the green photo sub-pixel. Therefore, the area of the blue sub-pixel can be set to be larger than the area of the red photo sub-pixel, and the area of the red photo sub-pixel is larger than that of the green photo sub-pixel. area.
  • the first primary color photo sub-pixel 111, the second primary color photo sub-pixel 112, and the third primary color photo sub-pixel 113 are combined into a circular shape, which can avoid the phenomenon of color fringing and edge jagging in actual display.
  • the pixel unit 11 of the light emitting device 10 displays the letter "A”
  • the three primary color photosub-pixels 111/112/113 in a single pixel unit emit light at the same time, appearing white, and the letter "A" has a smooth edge.
  • the combination of the three primary color photo sub-pixels 111/112/113 is circular, which means that the overall shape is circular. In some embodiments, it can also be oval or polygonal close to circular. .
  • each pixel unit 11 is spaced apart from a plurality of adjacent pixel units 11, and the first primary color photo sub-pixel 111, the second primary color photo sub-pixel 112, and the third primary color photo sub-pixel 112 and the third primary color photo sub-pixel 111 in the same pixel unit 11 are separated from each other.
  • the primary color photo sub-pixels 113 are spaced apart from each other. Among them, the smaller the distance between adjacent pixel units 11, the higher the corresponding display resolution. The same is true between adjacent primary color photo sub-pixels 111/112/113.
  • the first primary color photo sub-pixel 111, the second primary color photo sub-pixel 112, and the third primary color photo sub-pixel 113 may all have a fan shape.
  • the sum of the center angles corresponding to the three primary color photo sub-pixels 111/112/113 is 360 degrees
  • the size of the center angles corresponding to the three primary color photo sub-pixels 111/112/113 is inversely proportional to the life of the corresponding sub-pixel.
  • the first primary color photo sub-pixel 111 is a red photo sub-pixel, and its corresponding central angle range can be 90 to 120 degrees
  • the second primary color photo sub-pixel 112 is a green photo sub-pixel, and its corresponding central angle range can be 60 to 90 degrees.
  • the third primary color photo sub-pixel 113 is a blue sub-pixel, and its corresponding central angle may range from 150 to 180 degrees. In this way, the life difference between the three sub-pixel light-emitting materials of red, green and blue can be reduced, thereby extending the life of the light-emitting device.
  • the pixel unit 11 may further include at least one compensating photon pixel 114.
  • the first primary color photo sub-pixel 111, the second primary color photo sub-pixel 112, and the third primary color photo sub-pixel 113 form an overall circular primary color photo sub-pixel group A
  • the compensation photo sub-pixel 114 is located in The peripheral area of the primary color photo sub-pixel group A, in this way, the compensating photo sub-pixel 114 and the adjacent primary color photo sub-pixel group A form a pixel unit 11 with four sub-pixels, which not only improves the brightness and color of the screen display, but also effectively saves energy consumption. , Prolong the service life of the light-emitting device, and can also increase the pixel aperture ratio of the light-emitting device.
  • the compensating photo sub-pixel 114 may be located in an area surrounded by four primary color photo sub-pixel groups A arranged in two rows and two columns adjacent to each other, which is beneficial to increase the pixel aperture ratio of the light emitting device.
  • each pixel unit 11 may include a first primary color photo sub-pixel 111, a second primary color photo sub-pixel 112, a third primary color photo sub-pixel 113, and a compensation photo sub-pixel 114. That is to say, the area surrounded by the four primary color photo sub-pixel groups A that are adjacent and arranged in two rows and two columns is not all provided with compensating photo sub-pixels 114. Wherein, the compensation photosub-pixels 114 of the plurality of pixel units 11 may be evenly distributed among the plurality of pixel units 11 to ensure the overall uniformity of light emission of the light-emitting device.
  • each pixel unit 11 may include a first primary color photo sub-pixel 111, a second primary color photo sub-pixel 112, a third primary color photo sub-pixel 113, and at least two compensation photo sub-pixels 114, and the at least two Compensating photo sub-pixels 114 are uniformly distributed in the peripheral area of the primary color photo sub-pixel group A formed by the first primary color photo sub-pixel 111, the second primary color photo sub-pixel 112, and the third primary color photo sub-pixel 113 to ensure a single pixel unit 11.
  • the uniformity of luminescence For example, as shown in FIG.
  • the above-mentioned area surrounded by the four primary color photo sub-pixel groups A arranged in two rows and two columns adjacent to each other is provided with compensating photo sub-pixels 114, corresponding to each pixel unit 11 including four Compensating photo sub-pixels 114, and the four compensating photo sub-pixels 114 are distributed in four equal parts on the peripheral area of the primary color photo sub-pixel group A.
  • the two compensating photo sub-pixels 114 may be distributed in two equal parts on the peripheral area of the primary color photo sub-pixel group A.
  • the number of compensating photon pixels 114 of the pixel unit 11 located in the first row, first column, last row or last column may be smaller, that is, the compensating photo sub-pixel 114 of the pixel unit 11 located in the edge area may be reduced, or the pixel unit 11 located in the edge area may not include the compensating photo sub-pixel 114.
  • the aforementioned single pixel unit 11 includes at least one or at least two compensating photo sub-pixels 114, which means that at least one or at least two compensating photo sub-pixels 114 are distributed on the peripheral area of the primary color photo sub-pixel group A of the single pixel unit 11, and In actual display, the same compensating photo sub-pixel 114 may be shared by multiple primary color photo sub-pixel groups A.
  • the shape of the compensating photo sub-pixel 114 may be a diamond, a circle, an ellipse, a square, a rectangle, or a polygon.
  • the shape of the compensating photo sub-pixel 114 may be a circle.
  • the photo-compensating sub-pixel 114 may be a white sub-pixel, and the white sub-pixel may be formed by laminating or mixing at least one luminescent material of a necessary color for synthesizing white light and another luminescent material of a necessary color, for example, white
  • the sub-pixels may be formed by stacking light-emitting materials of three colors of red, green and blue.
  • the light-emitting device 10 further includes a patterned pixel defining layer (not shown in the figure) on the substrate, and the patterned pixel defining layer is used to define a pixel area on the substrate for forming pixels.
  • the pixel unit 11 is formed on the pixel area of the substrate, and the aforementioned three primary color photosub-pixels may include an anode (not shown in the figure), a hole injection layer (not shown in the figure), and a hole A transport layer (not shown in the figure), a light-emitting layer (not shown in the figure), an electron transport layer (not shown in the figure), and a cathode (not shown in the figure).
  • the light-emitting device in this embodiment includes a plurality of pixel units arranged in an array.
  • the pixel units include first primary color photo sub-pixels, second primary color photo sub-pixels, and third primary color photo sub-pixels arranged at intervals.
  • the first primary color photo sub-pixel, the second primary color photo sub-pixel, and the third primary color photo sub-pixel are combined to form a circle, and the areas of the first primary color photo sub-pixel, the second primary color photo sub-pixel, and the third primary color photo sub-pixel are different. It is completely equal. In this way, there is no need to share sub-pixels between different pixel units, which can avoid the problems of low resolution, color fringing, and edge jagging due to the sharing of sub-pixels between different pixel units.
  • FIG. 6 is a schematic flowchart of a method for manufacturing a light emitting device according to an embodiment of the present application.
  • the manufacturing method of the light emitting device includes the following steps:
  • the substrate includes a plurality of pixel regions arranged in an array, and the pixel regions include first primary color photo sub-pixel regions, second primary color photo sub-pixel regions, and third primary color photo sub-pixel regions that are arranged at intervals, in each pixel region ,
  • the first primary color photo sub-pixel region, the second primary color photo sub-pixel region, and the third primary color photo sub-pixel region are combined to form a circle, and the areas of the first primary color photo sub-pixel region, the second primary color photo sub-pixel region, and the third primary color photo sub-pixel region Not exactly equal.
  • the substrate is a TFT substrate with a base
  • the base can be a glass base or a hard resin base, or a flexible base used to prepare a flexible display panel
  • the material of the flexible base can be polyimide or polycarbonate.
  • organic polymers such as esters, polyethylene terephthalate, and polyethersulfone substrates.
  • the areas of the first primary color photo sub-pixel region, the second primary color photo sub-pixel region, and the third primary color photo sub-pixel region are inversely proportional to the lifespan of their corresponding sub-pixels, so as to reduce the difference in service life between different sub-pixels. Further extend the life of the light-emitting device.
  • the first primary color photo sub-pixel region may be a red photo sub-pixel region
  • the second primary color photo sub-pixel region may be a green photo sub-pixel region
  • the third primary color photo sub-pixel region may be a blue sub-pixel region. Due to the difference in the lifespan of red, green and blue organic light-emitting materials, and generally, the lifespan of blue organic light-emitting materials is shorter than that of red organic light-emitting materials, and the lifespan of red organic light-emitting materials is shorter than that of green organic light-emitting materials, that is, blue sub-pixels.
  • the life of the red photo sub-pixel is lower than that of the red photo sub-pixel, and the life of the red photo sub-pixel is lower than that of the green photo sub-pixel. Therefore, the area of the blue sub-pixel area can be set to be larger than the area of the red photo sub-pixel area, and the area of the red photo sub-pixel area is larger than that of the green photo sub-pixel. The area of the photon pixel area.
  • a patterned pixel defining layer is formed on the substrate, and the patterned pixel defining layer is used to define a pixel area on the substrate for forming pixels.
  • the combination of the first primary color photo sub-pixel region, the second primary color photo sub-pixel region, and the third primary color photo sub-pixel region is circular, which means that the overall shape is circular. In some embodiments, it may also be circular. Oval, or a polygon close to a circle.
  • S62 forming a pixel unit on the pixel area, the pixel unit including a first primary color photo sub-pixel located on the first primary color photo sub-pixel area, a second primary color photo sub-pixel located on the second primary color photo sub-pixel area, and a third primary color photo sub-pixel The third primary color photo sub-pixel on the area.
  • the areas of the first primary color photo sub-pixel region, the second primary color photo sub-pixel region, and the third primary color photo sub-pixel region are not completely equal, that is, the first primary color photo sub-pixel, the second primary color photo sub-pixel, and the third primary color photon
  • the areas of the pixels are not exactly equal.
  • the areas of the first primary color photo sub-pixels, the second primary color photo sub-pixels, and the third primary color photo sub-pixels are inversely proportional to the lifespan of their corresponding sub-pixels, so as to reduce the service life difference between different sub-pixels, thereby extending the life of the light emitting device.
  • the first primary color photo sub-pixel region, the second primary color photo sub-pixel region, and the third primary color photo sub-pixel region are combined to form a circle, corresponding to the first primary color photo sub-pixel, the second primary color photo sub-pixel, and the third primary color photo sub-pixel. After being combined, it is also round. In this way, it can avoid the phenomenon of color fringing and jagged edges in actual display, and improve the visual effect in actual display.
  • the first primary color photo sub-pixel area, the second primary color photo sub-pixel area, and the third primary color photo sub-pixel area may all have a fan shape, that is, the first primary color photo sub-pixel, the second primary color photo sub-pixel, and the third primary color
  • the shape of the photon pixels may all be fan-shaped.
  • the sum of the central angles corresponding to the three primary color photo sub-pixels is 360 degrees
  • the size of the central angles corresponding to the three primary color photo sub-pixels is inversely proportional to the lifetime of the corresponding sub-pixels.
  • the first primary color photo sub-pixel is a red photo sub-pixel, and its corresponding central angle range can be 90 to 120 degrees
  • the second primary color photo sub-pixel is a green photo sub-pixel, and its corresponding central angle range can be 60 to 90 degrees
  • the primary color photo sub-pixels are blue sub-pixels, and the corresponding center angle range can be 150 to 180 degrees. In this way, the life difference between the red, green and blue light-emitting materials of the three sub-pixels can be reduced, thereby extending the life of the light-emitting device.
  • S62 may specifically include:
  • Sub-step A forming the first primary color photo sub-pixel on the first primary color photo sub-pixel area.
  • the first primary color photo sub-pixels are formed on the first primary color photo sub-pixel area by evaporation or inkjet printing.
  • Sub-step B forming a second primary color photo sub-pixel on the second primary color photo sub-pixel area.
  • the second primary color photo sub-pixels are formed on the second primary color photo sub-pixel area by evaporation or inkjet printing.
  • Sub-step C forming a third primary color photo sub-pixel on the third primary color photo sub-pixel area.
  • the third primary color photo sub-pixels are formed on the third primary color photo sub-pixel area by evaporation or inkjet printing.
  • the sizes of the first opening, the second opening and the third opening correspond to the area sizes of the first primary color photo sub-pixel region, the second primary color photo sub-pixel region, and the third primary color photo sub-pixel region on the substrate.
  • the aforementioned pixel area may further include at least one compensating photo sub-pixel area.
  • the first primary color photo sub-pixel area, the second primary color photo sub-pixel area, and the third primary color photo sub-pixel area constitute a primary color photo sub-pixel group area that is circular as a whole, and the compensation photo sub-pixel area Located in the peripheral area of the primary color photo sub-pixel group area.
  • the compensation photo sub-pixel area may be located on an area surrounded by four primary color photo sub-pixel group areas that are adjacent and arranged in two rows and two columns, which is beneficial to increase the pixel aperture ratio of the display and light emitting device.
  • S62 may specifically include:
  • Sub-step a using the first mask to form the first primary color photo sub-pixel area on the first primary color photo sub-pixel area and the compensation photo sub-pixel area.
  • the first primary color photo sub-pixels are formed on the first primary color photo sub-pixel area and the compensation photo sub-pixel area by evaporation or inkjet printing.
  • Sub-step b using the second mask to form the second primary color photo sub-pixel area on the second primary color photo sub-pixel area and the compensation photo sub-pixel area.
  • the second primary color photo sub-pixels are formed on the second primary color photo sub-pixel area and the compensation photo sub-pixel area by evaporation or inkjet printing.
  • Sub-step c using a third mask to form a third primary color photo sub-pixel area on the third primary color photo sub-pixel area and the compensation photo sub-pixel area.
  • the third primary color photo sub-pixels are formed on the third primary color photo sub-pixel area and the compensation photo sub-pixel area by evaporation or inkjet printing.
  • the first primary color photo sub-pixels, the second primary color photo sub-pixels, and the third primary color photo sub-pixels stacked on the compensation photo sub-pixel area constitute the above-mentioned compensation photo sub-pixels, that is, each pixel unit includes the first primary color photo sub-pixels and the second primary color photo sub-pixels. Pixel, third primary color photo sub-pixel and compensation photo sub-pixel. For example, if the first primary color photo sub-pixel is a red photo sub-pixel, the second primary color photo sub-pixel is a green photo sub-pixel, and the third primary color photo sub-pixel is a blue sub-pixel, then the first primary color photo sub-pixel and the second primary color are stacked on the compensation photo sub-pixel area.
  • the compensation photo sub-pixel formed by the photo sub-pixel and the third primary color photo sub-pixel may be a white sub-pixel.
  • the compensation photo sub-pixel and the adjacent primary color photo sub-pixel group constitute a pixel unit, which not only improves the brightness and color of the screen display, effectively saves energy consumption, prolongs the service life of the light-emitting device, and can also increase the pixel aperture ratio of the light-emitting device.
  • the sizes of the first opening, the second opening, the third opening, and the fourth opening are the same as those of the first primary color photo sub-pixel area, the second primary color photo sub-pixel area, the third primary color photo sub-pixel area, and the compensation on the substrate. There is a one-to-one correspondence between the size of the photo sub-pixel area.
  • the pixel unit includes first primary color photo sub-pixels, second primary color photo sub-pixels, and third primary color photo sub-pixels arranged at intervals.
  • the first The photo sub-pixels of the primary color, the photo sub-pixels of the second primary color, and the photo sub-pixels of the third primary color form a circle after being combined, and the areas of the first primary color photo sub-pixels, the second primary color photo sub-pixels, and the third primary color photo sub-pixels are not completely equal. Therefore, different pixel units There is no need to share sub-pixels between different pixel units, which can avoid the problems of low resolution, color fringing and edge jagging due to the sharing of sub-pixels between different pixel units.
  • FIG. 7 is a schematic structural diagram of a display panel provided by an embodiment of the present application.
  • the display panel 70 includes the light-emitting device 71 of any of the above embodiments, wherein the light-emitting device 71 includes a plurality of pixel units arranged in an array, and the pixel units include first primary color photo sub-pixels, second primary color photo sub-pixels, and second primary color photo sub-pixels arranged at intervals.
  • the first primary color photo sub-pixel, the second primary color photo sub-pixel, and the third primary color photo sub-pixel are combined to form a circle, and the first primary color photo sub-pixel, the second primary color photo sub-pixel and the third primary color
  • the areas of the primary color photo sub-pixels are not completely equal.
  • the display panel in this embodiment includes a plurality of pixel units arranged in an array.
  • the pixel units include first primary color photo sub-pixels, second primary color photo sub-pixels, and third primary color photo sub-pixels arranged at intervals.
  • the first primary color photo sub-pixel, the second primary color photo sub-pixel, and the third primary color photo sub-pixel are combined to form a circle, and the areas of the first primary color photo sub-pixel, the second primary color photo sub-pixel, and the third primary color photo sub-pixel are different. It is completely equal. In this way, there is no need to share sub-pixels between different pixel units, which can avoid the problems of low resolution, color fringing, and edge jagging due to the sharing of sub-pixels between different pixel units.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

La présente invention concerne un dispositif électroluminescent et son procédé de fabrication, et un panneau d'affichage. Le dispositif électroluminescent comprend une pluralité d'unités de pixel disposées en réseau. L'unité de pixel comprend un premier sous-pixel de couleur primaire, un deuxième sous-pixel de couleur primaire et un troisième sous-pixel de couleur primaire agencés à intervalles. Dans chacune des unités de pixel, le premier sous-pixel de couleur primaire, le deuxième sous-pixel de couleur primaire et le troisième sous-pixel de couleur primaire sont combinés de manière à être circulaires. De plus, des zones des premier, deuxième et troisième sous-pixels de couleur primaire ne sont pas complètement égales.
PCT/CN2019/086873 2019-04-22 2019-05-14 Dispositif électroluminescent et son procédé de fabrication, et panneau d'affichage WO2020215401A1 (fr)

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CN111047998B (zh) * 2019-12-13 2021-11-12 云谷（固安）科技有限公司 像素结构和显示面板
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