WO2021037213A1 - 像素排列结构和显示面板 - Google Patents

像素排列结构和显示面板 Download PDF

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Publication number
WO2021037213A1
WO2021037213A1 PCT/CN2020/112159 CN2020112159W WO2021037213A1 WO 2021037213 A1 WO2021037213 A1 WO 2021037213A1 CN 2020112159 W CN2020112159 W CN 2020112159W WO 2021037213 A1 WO2021037213 A1 WO 2021037213A1
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Prior art keywords
pixel
sub
light
arrangement structure
pixels
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PCT/CN2020/112159
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English (en)
French (fr)
Inventor
史文
陈亚文
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广东聚华印刷显示技术有限公司
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Publication of WO2021037213A1 publication Critical patent/WO2021037213A1/zh

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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
    • H10K59/30—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

  • the present disclosure relates to the field of electronic display technology, and in particular to a pixel arrangement structure and a display panel.
  • Transparent display is a brand-new display technology that allows the observer to see the background behind the display through the display. This display technology expands the application fields of traditional display technology and can be used in mobile phones, computers, refrigerators, and displays. , Billboards and other fields.
  • OLED Organic electroluminescent diodes
  • QLED quantum dot light-emitting diodes
  • a pixel arrangement structure includes a plurality of polygonal repeating units, the repeating unit includes 2n pixel units arranged around the center point of the repeating unit, wherein n is an integer greater than or equal to 2; each of the pixels The unit includes a number of sub-pixels, among which there are at least three light-emitting colors, and the light-emitting colors of adjacent sub-pixels are different; a light-transmitting area is provided in the pixel unit, and each sub-pixel in the pixel unit It is arranged around the light-transmitting area.
  • a display panel includes the above-mentioned pixel arrangement structure.
  • a is a schematic diagram of a pixel arrangement structure of an embodiment, b is an enlarged view of a repeating unit in a, and c is an enlarged view of a pixel unit in a;
  • a is a schematic diagram of a pixel arrangement structure of an embodiment, b is an enlarged view of a repeating unit in a, and c is an enlarged view of a pixel unit in a;
  • a is a schematic diagram of a pixel arrangement structure of an embodiment, b is an enlarged view of a repeating unit in a, and c is an enlarged view of a pixel unit in a;
  • a is a schematic diagram of a pixel arrangement structure of an embodiment, b is an enlarged view of a repeating unit in a, and c is an enlarged view of a pixel unit in a;
  • a is a schematic diagram of a pixel arrangement structure of an embodiment, b is an enlarged view of a repeating unit in a, and c is an enlarged view of a pixel unit in a;
  • FIG. 6 is a schematic diagram of the structure of a display panel according to an embodiment.
  • the pixel arrangement structure 10 of an embodiment of the present disclosure includes a plurality of repeating units 100 in a polygonal shape.
  • the adjacent repeating units are arranged in an edge-to-edge manner, so that the sub-pixels in adjacent positions and having the same light-emitting color in each repeating unit are gathered together to form a light-emitting area 20 with a regular shape.
  • the repeating unit 100 has a parallelogram shape, and the repeating unit 100 is repeatedly arranged along two directions with an included angle to form a pixel arrangement structure of an array structure.
  • the repeating unit 100 is rectangular, and the repeating unit 100 is repeatedly arranged in two directions perpendicular to each other to form a pixel arrangement structure of an array structure.
  • the repeating unit 100 includes 2n pixel units 200, where n is an integer greater than or equal to 2, and the pixel unit 200 is arranged around the center point of the repeating unit 300.
  • each pixel unit 200 includes at least three sub-pixels 300 with different light-emitting colors, and the light-emitting colors of adjacent sub-pixels are different; each pixel unit 200 is provided with a light-transmitting area 30,
  • the sub-pixels 300 in the pixel unit 200 are arranged around the light-transmitting area 30.
  • the sides of each sub-pixel and the light-transmitting area are arranged side-to-side.
  • the pixel units 200 in the repeating unit 100 are centrally symmetrically distributed, that is, the number of the pixel units 200 in the repeating unit 100 is an even number, every two pixel units 200 are arranged center-symmetrically, and all the pixel units 200 are symmetrical.
  • the centers overlap.
  • the area and shape of the pixel unit 200 in each repeating unit 100 are the same.
  • the area and shape of each sub-pixel 300 are the same.
  • the number of pixel units 200 in the repeating unit 100 is not particularly limited, and can be any even number greater than or equal to 4, which can increase the uniformity of the display panel's light emission.
  • the repeating unit 100 has a parallelogram shape, and the repeating unit includes four pixel units divided into 2 ⁇ 2 along two angles; and the repeating unit The arrangement is repeated along the two directions with an included angle to form a pixel arrangement structure of an array structure.
  • the two directions that form an angle are two directions that are perpendicular to each other, and the repeating unit is repeatedly arranged in the two directions that are perpendicular to each other to form a pixel arrangement structure of an array structure.
  • the repeating unit 100 is rectangular, and each repeating unit 100 includes 4 pixel units 200.
  • the repeating unit 100 has a square shape, and each repeating unit 100 includes 4 pixel units 200, and the area and shape of each pixel unit 200 are the same.
  • the repeating unit 100 is divided into four 2 ⁇ 2 pixel units 200 along two mutually perpendicular directions, which are a first pixel unit 210 and a second pixel unit 220, respectively.
  • the third pixel unit 230 and the fourth pixel unit 240, the first pixel unit 210 and the fourth pixel unit 240 are center symmetric
  • the second pixel unit 220 and the third pixel unit 230 are center symmetric
  • the center of symmetry of the fourth pixel unit 240 coincides with the centers of symmetry of the second pixel unit 220 and the third pixel unit 230.
  • the repeating unit 100 is divided into four 2 ⁇ 2 pixel units 200 along two acute angle directions, which are a first pixel unit 210, a second pixel unit 220, a third pixel unit 230, and
  • the fourth pixel unit 240, the first pixel unit 210 and the fourth pixel unit 240 are centrally symmetrical, the second pixel unit 220 and the third pixel unit 230 are centrally symmetrical, and the first pixel unit 210 and the fourth pixel unit 240 are symmetrical
  • the center coincides with the symmetric center of the second pixel unit 220 and the third pixel unit 230.
  • the shapes of the first pixel unit 210, the second pixel unit 220, the third pixel unit 230, and the fourth pixel unit 240 are parallelograms. In an embodiment, as shown in c in FIG. 1, the shapes of the first pixel unit 210, the second pixel unit 220, the third pixel unit 230, and the fourth pixel unit 240 are rectangular. In an embodiment, as shown in c in FIG. 2, the shapes of the first pixel unit 210, the second pixel unit 220, the third pixel unit 230, and the fourth pixel unit 240 are rhombuses. In an embodiment, as shown in c in FIGS. 3-5, the shapes of the first pixel unit 210, the second pixel unit 220, the third pixel unit 230, and the fourth pixel unit 240 are squares.
  • the shape of the light-transmitting area 30 is a quadrilateral, and in an embodiment is a parallelogram, as shown in a in FIGS. 1-5, the shape of the light-transmitting area 30 includes a rhombus, a rectangle, and a square. In another embodiment, it is a square to ensure the ink deposition area and at the same time ensure the area of the light-transmitting area 30.
  • the sub-pixel 300 of the pixel unit 200 is triangular or L-shaped.
  • triangles include right-angled triangles, isosceles triangles, and equilateral triangles.
  • the L-shape refers to a composition consisting of two mutually perpendicular rectangles. In one embodiment, the aspect ratio of the rectangle is 3:1, and the length and width of the two rectangles are equal to facilitate the arrangement of sub-pixels.
  • the light-emitting area 20 refers to an area capable of emitting light of a specific color.
  • Each light-emitting area 20 is composed of adjacent sub-pixels 300 with the same light-emitting color in adjacent pixel units 200, that is, each One sub-pixel 300 in the pixel unit 200 and each adjacent sub-pixel 300 of all other adjacent pixel units 200 are combined to form a light-emitting area 20.
  • each sub-pixel 300 corresponds to a light-emitting unit, and the light-emitting colors of the sub-pixels 300 in the same light-emitting area 20 in the present disclosure are the same. For example: as shown in c in FIGS.
  • the four sub-pixels of the first pixel unit 210, the second pixel unit 220, the third pixel unit 230, and the fourth pixel unit 240 are the first sub-pixel 310 and the second sub-pixel, respectively.
  • the first sub-pixel 310 of the fourth pixel unit 240 is combined into a light-emitting area 20, and the fourth sub-pixel 340 of the first pixel unit 210, the third sub-pixel 330 of the second pixel unit 220, and the first sub-pixel 330 of the third pixel unit 230
  • the light emission colors of the two sub-pixels 320 and the fourth pixel unit 240 are the same.
  • the light-transmitting area 30 refers to a light-transmitting area, which has
  • the shape of the light-emitting area 20 is a parallelogram or a cross, and in one embodiment, the parallelogram is a rhombus or a rectangle.
  • the shape of the light-emitting area is related to the shape of the sub-pixel.
  • the number of sub-pixels 300 in the pixel unit 200 is four, namely, the first sub-pixel 310, the second sub-pixel 320, the third sub-pixel 330, and the fourth sub-pixel.
  • the sub-pixel 340, the first sub-pixel 310 and the fourth sub-pixel 340 are centered on the center of the light-transmitting area 30 and are center-symmetric; the second sub-pixel 320 and the third sub-pixel 330 are centered on the center of the light-transmitting area 30 as the center symmetry.
  • the shape of the sub-pixel 300 is a triangle or an L shape. It is understandable that when the shape of the sub-pixel 300 is a triangle, the shape of the light-emitting area is a parallelogram; when the shape of the sub-pixel 300 is an L-shape, the shape of the light-emitting area is a cross.
  • the area of the light-emitting region 20 can be determined according to the area of the sub-pixel 300, and is not particularly limited. Moreover, the light-emitting area 20 of the present disclosure is composed of adjacent sub-pixels 300 in adjacent pixel units, and the sub-pixels 300 in the same light-emitting area have the same light-emitting color, so it can be prepared without increasing the difficulty of preparation. , The area of the light-emitting area is relatively reduced, and enough light-transmitting areas are reserved to realize high-resolution transparent display.
  • the light-emitting color of the sub-pixel 300 in each pixel unit 200 is not particularly limited, and may be a color combination of commonly used display units, such as a combination of red, blue, and green.
  • the pixel unit includes at least one red sub-pixel, one green sub-pixel, and one blue sub-pixel.
  • one of the first sub-pixel 310, the second sub-pixel 320, the third sub-pixel 330, and the fourth sub-pixel 340 emits red, one blue, and two green.
  • the light-emitting colors of adjacent sub-pixels in the same pixel unit are different.
  • each pixel unit can make each pixel unit form two display units, that is, the red sub-pixel and the blue sub-pixel as the common light-emitting area, which increases the number of display units per unit area and improves the resolution of the display panel.
  • the number of sub-pixels 300 in the pixel unit 200 is three, and the three are the first sub-pixel 310, the second sub-pixel 320, and the third sub-pixel 330, and the third sub-pixel
  • the shape of the pixel 330 is the same as the shape formed by the first sub-pixel 310 and the second sub-pixel 320. It is understandable that the shape jointly formed by the first sub-pixel 310 and the second sub-pixel 320 refers to a shape formed by splicing along the adjacent sides of the first sub-pixel 310 and the second sub-pixel 320.
  • the shapes of the first sub-pixel 310 and the second sub-pixel 320 are L-shaped. Furthermore, the area of the third sub-pixel 330 is the sum of the areas of the first sub-pixel 310 and the second sub-pixel 320.
  • one of the sub-pixels emits red, one green, and one blue. Furthermore, the light-emitting color of the third sub-pixel 330 is blue, so as to increase the area of the blue light-emitting region and improve the stability of the display panel.
  • adjacent sub-pixels 300 are separated by a pixel-defining layer, so the distance between adjacent sub-pixels (thickness of the pixel-defining layer) varies according to different manufacturing methods. It should be understood that all are within the protection scope of the present disclosure.
  • all the sub-pixels 300 in each pixel unit 200 are arranged around the light-transmitting area 30 to ensure the area of the light-transmitting area 30, and the pixel unit 200 is arranged around the central point to ensure the uniformity of light emission ,
  • a sub-pixel 300 in each pixel unit 200 and each adjacent sub-pixel 300 of all other adjacent pixel units 200 are combined to form a light-emitting area 20, and the light-emitting color of the same light-emitting area 20 is the same, so The size of each sub-pixel can be greatly reduced, and then enough light-transmitting area can be reserved to realize transparent display.
  • the light-emitting colors of the sub-pixels 300 in the same light-emitting area 20 are the same, multiple sub-pixels of the same color can be combined and printed at the same time, so that the ink deposition area can be doubled, and the ink can be guaranteed. No overflow occurs due to the pixel area being too small, so that high-resolution transparent display can be achieved under the same device accuracy.
  • a display panel includes the above-mentioned pixel arrangement structure.
  • the structure and other features of the pixel arrangement structure are the same as the above, and will not be repeated here.
  • the above-mentioned display panel may be a computer display screen, a mobile phone screen, a billboard, a game screen, and the like.
  • the display panel may further include a substrate 3000, a pixel electrode 2111, a pixel defining layer 2112, a transparent electrode 2113, and the like.
  • the pixel arrangement structure is arranged on the substrate, and the sub-pixel 300 in each light-emitting area 20 of the pixel arrangement structure is a light-emitting unit, which includes at least one light-emitting layer, and may also include other organic functional layers.
  • the organic functional layers include but not Limited to one or more of the hole injection layer, the hole transport layer, the light emission layer, the electron injection layer, the electron transport layer, the hole blocking layer, and the electron blocking layer.
  • the light emitting layer can be organic Light-emitting layer or quantum dot light-emitting layer.
  • a driving TFT 3001 may also be provided on the substrate 3000 for driving light-emitting elements.
  • the driving TFT 3001 includes, but is not limited to, a polysilicon TFT and a metal oxide TFT.
  • a flat layer 2114 may also be formed between the substrate 3000 and the pixel defining layer 2112 to flatten the uneven surface caused by the driving circuit.
  • the substrate 3000 is a commonly used substrate in the field, such as a rigid glass substrate or a PI flexible substrate;
  • the pixel electrode 2111 can be Al, Ag, Au or their alloy, or a laminated conductive reflective film such as ITO/Ag/ITO;
  • pixel electrode The thickness is 40-200nm.
  • the pixel defining layer 2112 is laminated on the substrate 3000, and defines the light-emitting regions 20 and the light-transmitting regions 30 corresponding to the above-mentioned pixel arrangement structure. It is understandable that the light-emitting area 20 corresponds to the light-emitting area in the pixel arrangement structure, and the light-transmitting area 30 corresponds to the light-transmitting area of the above-mentioned pixel arrangement structure.
  • the pixel defining layer 2112 forms a plurality of pixel pits on the substrate, and each pixel pit corresponds to a sub-pixel in each light-emitting area of the pixel arrangement structure, and there is a certain amount between the pixel pits for setting sub-pixels of different light-emitting colors.
  • the interval corresponds to the light-transmitting area 30 in the pixel arrangement structure.
  • the pixel electrode 2111 is disposed on the light-emitting area 20 of the substrate 3000, and a part of the edge area of the pixel electrode 2111 is covered by the pixel defining layer 2112.
  • the sub-pixel 300 of the pixel arrangement structure is arranged on the light-emitting area 20 of the substrate 3000 and covers the pixel electrode 2111.
  • the transparent electrode 2113 is arranged on the sub-pixel 300 of the pixel arrangement structure and the light-transmitting area 30 of the substrate 3000.
  • the pixel electrode 2111 may be Al , Ag, Au or their alloys, or ITO/Ag/ITO and other laminated conductive reflective films, the thickness of the pixel electrode can be 40-200nm. It is understandable that the light-transmitting area 30 has no pixel electrodes and sub-pixels with light-emitting functions.
  • the pixel defining layer 2112 may be a single-layer structure or a multi-layer structure, which is not particularly limited herein.
  • the pixel defining layer 2112 includes a lyophilic pixel defining layer 2112a and a lyophobic pixel defining layer 2112b, and the lyophilic pixel defining layer 2112a is disposed close to the substrate 3000.
  • Pixel pits are formed on the lyophilic pixel defining layer 2112a and the lyophobic pixel defining layer 2112b. The sub-pixels are located in the pixel pit.
  • the bottom of the sidewall of the pixel pit is the lyophilic pixel defining layer 2112a, and the top is the lyophobic pixel defining layer.
  • the layer 2112b such that the sub-pixel 300 is at least partially in contact with the lyophilic pixel defining layer 2112a.
  • the total thickness of the functional layers constituting the sub-pixel 300 is greater than the thickness of the lyophilic pixel defining layer, so that the functions of the sub-pixel 300 can be effectively controlled without affecting the light-emitting performance of the sub-pixel 300
  • the climbing height of the layer before drying to form a film ensures the uniformity of the film interface.
  • the lyophilic pixel defining layer 2112a can be prepared from materials such as silicon dioxide and silicon nitride that are attractive to the solution of organic electroluminescent materials
  • the lyophobic pixel defining layer 2112b can be made of fluorinated polyacrylamide. Imine, fluorinated polymethyl methacrylate and polysiloxane are prepared from materials that are repellent to the solution of the organic electroluminescent material, and are not particularly limited here.
  • the lyophilic pixel defining layer 2112a and the lyophobic pixel defining layer 2112b can be prepared by an evaporation process or the like.
  • the pixel defining layer 2112 of the light-emitting area 20 includes a first pixel bank and a second pixel bank.
  • the first pixel bank has a first opening
  • the second pixel bank is located in the first opening and divides the first opening into Two second openings
  • the thickness of the first pixel bank is greater than the thickness of the second pixel bank
  • the two pixel electrodes 2111 are respectively arranged corresponding to the two second openings, and the sub-pixels are arranged in the first opening and cover the two pixels electrode.
  • the first pixel bank is formed by stacking the lyophilic pixel defining layer 2112a and the lyophobic pixel defining layer 2112b, and the lyophilic pixel defining layer 2112a is close to the substrate, and the second pixel bank is formed by the lyophilic pixel defining layer 2112a.
  • the pixel defining layer 2112a is formed.
  • the transparent electrode 2113 may be a transparent conductive metal oxide, a conductive metal film, a conductive graphene film, or a conductive carbon nanotube film.
  • the transparent electrode 2113 is a conductive graphene film, and the thickness of the transparent electrode 2113 is 5 nm-30 nm to ensure light transmittance.
  • the transparent electrode 2113 can be prepared by using an open mask to simplify the process.
  • the transparent electrode can also be prepared with a fine mask, which does not cover the light-transmitting area, and the process is relatively complicated, but the light-transmitting area is more transparent.
  • each of the sub-pixels with different light-emitting colors may have corresponding pixel electrodes to drive the organic light-emitting units of various colors to emit light, but the light-transmitting area is not covered with the pixel electrodes.
  • a transparent pixel defining layer can also be covered in the light-transmitting area, as long as the light-transmitting property of the display panel can be ensured, which is not particularly limited here.
  • the driving circuit array can be fabricated on the substrate through the yellow light process.
  • S102 Fabricate patterned pixel electrodes in each light-emitting area of the substrate.
  • the flat layer can be made of organic materials and prepared by inkjet printing, which is not particularly limited here.
  • S103 Fabricate a pixel defining layer in the light-emitting area of the substrate, and define a number of pixel pits to form a light-emitting area and a light-transmitting area corresponding to the above-mentioned pixel arrangement structure.
  • the pixel arrangement structure is the same as the above, and will not be repeated here.
  • the pixel defining layer includes a first pixel bank and a second pixel bank, the first pixel bank has a first opening, the second pixel bank is located in the first opening, and the first opening is divided into two second openings , And the thickness of the first pixel bank is greater than the thickness of the second pixel bank, and the two pixel electrodes are respectively disposed corresponding to the two second openings.
  • the first pixel bank is formed by stacking a lyophilic pixel defining layer and a lyophobic pixel defining layer, and the lyophilic pixel defining layer is close to the substrate, and the second pixel bank is formed by the lyophilic pixel defining layer form.
  • S104 Form each functional layer of the sub-pixel in each pixel pit on the pixel defining layer.
  • each sub-pixel having the above-mentioned pixel arrangement structure is formed in each light-emitting area on the pixel defining layer.
  • each functional layer can be deposited by an inkjet printing method.
  • each functional layer is laminated on the first Within the pixel bank and cover the second pixel bank.
  • the colors of several sub-pixels constituting the same light-emitting area are the same, so that several sub-pixels can be printed together, which not only doubles the ink deposition area, but also effectively reduces the sub-pixels. At the same time, it ensures that the ink will not overflow due to the small pixel area, so as to achieve high-resolution display under the same equipment accuracy.
  • a pen mask can be used to deposit transparent electrodes on the entire surface to simplify the preparation process.
  • the pixel arrangement structure 10 of this embodiment includes a plurality of repeating units 100, which are arranged in a row direction and a column direction (X and Y directions in FIG. 1, X and Y are perpendicular to each other), forming Array structure; the repeating unit 100 is divided into four 2 ⁇ 2 pixel units 200 along the row and column directions, which are respectively a first pixel unit 210, a second pixel unit 220, a third pixel unit 230, and a fourth pixel unit 240,
  • the first pixel unit 210 and the fourth pixel unit 240 are center-symmetric
  • the second pixel unit 220 and the third pixel unit 230 are center-symmetric
  • the center of symmetry of the first pixel unit 210 and the fourth pixel unit 240 is the same as that of the second pixel unit.
  • the symmetry centers of 220 and the third pixel unit 230 coincide.
  • Each pixel unit 200 includes four sub-pixels 300.
  • the first sub-pixel 310 and the fourth sub-pixel 340 emit green light
  • the second sub-pixel 320 emits red light
  • the third sub-pixel 330 emits blue light.
  • the pixel unit 200 is provided with a light-transmitting area 30, four sub-pixels 300 are arranged around the light-transmitting area 30, and one sub-pixel 300 in each pixel unit 200 is adjacent to each of the adjacent sub-pixels of all other adjacent pixel units.
  • the pixels 300 are combined into a light-emitting area 20 with the same light-emitting color.
  • the pixel unit 200 is rectangular
  • the sub-pixel 300 is an isosceles right triangle
  • the light-emitting area 20 is a rhombus
  • the light-transmitting area 30 is a rhombus.
  • the light-transmitting area 30 occupies 50% of the total area of the light-emitting area 20 and the light-transmitting area 30.
  • each red light emitting area can be surrounded by four green light emitting areas, and each blue light emitting area can be surrounded by four green light emitting areas.
  • the pixel arrangement structure 10 can make the red light emitting area and The blue light emitting area is used as a common light emitting area, so that the number of display units per unit area can be increased, and the resolution can be improved.
  • the pixel arrangement structure 10 of this embodiment includes a plurality of repeating units 100, which are arranged in a row direction and a column direction (X and Y directions in FIG. 1, X and Y have a certain angle) , Forming an array structure; the repeating unit 100 is divided into 2 ⁇ 2 four pixel units 200 along the row direction and the column direction, which are respectively the first pixel unit 210, the second pixel unit 220, the third pixel unit 230, and the fourth pixel unit 240, the first pixel unit 210 and the fourth pixel unit 240 are center-symmetrical, the second pixel unit 220 and the third pixel unit 230 are center-symmetrical, and the center of symmetry of the first pixel unit 210 and the fourth pixel unit 240 is the same as that of the second pixel unit.
  • the symmetry centers of the pixel unit 220 and the third pixel unit 230 coincide.
  • Each pixel unit 200 includes four sub-pixels 300.
  • the first sub-pixel 310 and the fourth sub-pixel 340 emit green light
  • the second sub-pixel 320 emits red light
  • the third sub-pixel 330 emits blue light.
  • the pixel unit 200 is provided with a light-transmitting area 30, four sub-pixels 300 are arranged around the light-transmitting area 30, and one sub-pixel 300 in each pixel unit 200 is adjacent to each of the adjacent sub-pixels of all other adjacent pixel units.
  • the pixels 300 are combined into a light-emitting area 20 with the same light-emitting color.
  • the pixel unit 200 is a parallelogram
  • the sub-pixel 300 is a triangle
  • the light-emitting area 20 is a parallelogram
  • the light-transmitting area 30 is a parallelogram.
  • the light-transmitting area 30 occupies 50% of the total area of the light-emitting area 20 and the light-transmitting area 30.
  • each red light emitting area can be surrounded by four green light emitting areas, and each blue light emitting area can be surrounded by four green light emitting areas.
  • the pixel arrangement structure 10 can make the red light emitting area and The blue light emitting area is used as a common light emitting area, so that the number of display units per unit area can be increased, and the resolution can be improved.
  • the pixel arrangement structure 10 of this embodiment includes a plurality of repeating units 100, and the repeating units 100 are arranged along the E direction and the F direction (the E direction and the F direction in FIG. 2 are perpendicular to each other) to form an array structure;
  • the repeating unit is divided into four 2 ⁇ 2 pixel units 200 along the E and F directions, which are a first pixel unit 210, a second pixel unit 220, a third pixel unit 230, and a fourth pixel unit 240.
  • the first pixel unit 210 and the fourth pixel unit 240 are center-symmetric, the second pixel unit 220 and the third pixel unit 230 are center-symmetric, and the center of symmetry of the first pixel unit 210 and the fourth pixel unit 240 is the same as that of the second pixel unit 220 and the third pixel unit 220.
  • the symmetry centers of the pixel unit 230 coincide.
  • Each pixel unit 200 includes four sub-pixels 300. Among the four sub-pixels, the first sub-pixel 310 and the fourth sub-pixel 340 emit green light, the second sub-pixel 320 emits red light, and the third sub-pixel 330 emits blue light.
  • Four sub-pixels 300 are arranged around the light-transmitting area 30, and one sub-pixel 300 in each pixel unit 200 is combined with each adjacent sub-pixel 300 of all other adjacent pixel units to form a light-emitting area 20 with the same light-emitting color. .
  • the pixel unit 200 has a square shape
  • the sub-pixel 300 has an isosceles triangle shape
  • the light-emitting area 20 has a square shape
  • the light-transmitting area 30 has a square shape.
  • the light-transmitting area 30 occupies 50% of the total area of the light-emitting area 20 and the light-transmitting area 30.
  • the first row of light-emitting areas with two light-emitting colors are alternately arranged, and the adjacent light-emitting areas have the first row.
  • a space area, the second row of light-emitting areas with the same light-emitting color, and the light-emitting area of the second row is arranged corresponding to the first space area of the first row.
  • the first column is alternately arranged with light-emitting areas of two light-emitting colors, and there is a second interval between adjacent light-emitting areas.
  • the columns are light-emitting areas of the same light-emitting color, and the light-emitting areas of the second row are arranged corresponding to the second interval of the first row. It can be understood that the above-mentioned first row, second row, first column and second column only represent two adjacent rows and columns, that is, they can be odd rows and odd columns, or even rows and even columns.
  • the pixel arrangement structure 10 of this embodiment includes a plurality of repeating units 100.
  • the repeating units 100 are arranged along the row direction and the column direction (along the X direction and the Y direction) to form an array structure;
  • the direction and the column direction are divided into four 2 ⁇ 2 pixel units 200, which are a first pixel unit 210, a second pixel unit 220, a third pixel unit 230, and a fourth pixel unit 240.
  • the first pixel unit 210 and the fourth pixel unit The pixel unit 240 is center-symmetrical, the second pixel unit 220 and the third pixel unit 230 are center-symmetrical, and the center of symmetry of the first pixel unit 210 and the fourth pixel unit 240 is the same as that of the second pixel unit 220 and the third pixel unit 230.
  • the centers of symmetry coincide.
  • Each pixel unit 200 includes four sub-pixels 300. Among the four sub-pixels, the first sub-pixel 310 and the fourth sub-pixel 340 emit green light, the second sub-pixel 320 emits red light, and the third sub-pixel 330 emits blue light.
  • Four sub-pixels 300 are arranged around the light-transmitting area 30, and one sub-pixel 300 in each pixel unit 200 is combined with each adjacent sub-pixel 300 of all other adjacent pixel units to form a light-emitting area 20 with the same light-emitting color. .
  • the pixel unit 200 is square, the sub-pixel 300 is L-shaped, the light-emitting area 20 is cross-shaped, and the light-transmitting area 30 is square.
  • the light-transmitting area 30 occupies 50% of the total area of the light-emitting area 20 and the light-transmitting area 30.
  • each red light emitting area can be surrounded by four green light emitting areas, and each blue light emitting area can be surrounded by four green light emitting areas.
  • This arrangement can make the red light emitting area and the blue light emitting area.
  • the area is used as a common light-emitting area, so that the number of display units per unit area can be increased, and the resolution can be improved.
  • the pixel arrangement structure 10 of this embodiment includes a plurality of repeating units 100.
  • the repeating units 100 are arranged along the row direction and the column direction (along the X direction and the Y direction) to form an array structure;
  • the direction and the column direction are divided into 4 pixel units of 2 ⁇ 2, which are the first pixel unit 210, the second pixel unit 220, the third pixel unit 230, and the fourth pixel unit 240, the first pixel unit 210 and the fourth pixel unit.
  • the unit 240 is center-symmetrical, the second pixel unit 220 and the third pixel unit 230 are center-symmetrical, and the center of symmetry of the first pixel unit 210 and the fourth pixel unit 240 is symmetrical with the second pixel unit 220 and the third pixel unit 230 The centers coincide.
  • Each pixel unit 200 includes three sub-pixels 300.
  • the first sub-pixel 310 emits green light
  • the second sub-pixel 320 emits red light
  • the third sub-pixel 330 emits blue light.
  • Three sub-pixels 300 are arranged around the light-transmitting area 30, and one sub-pixel 300 in each pixel unit 200 is combined with each adjacent sub-pixel 300 of all other adjacent pixel units to form a light-emitting area 20 with the same light-emitting color. .
  • the pixel unit 200 is square, the first sub-pixel 310 and the second sub-pixel 320 are L-shaped, and the shape of the third sub-pixel 330 is formed by splicing two L-shaped first sub-pixels and second sub-pixels. The same, and the area of the third sub-pixel 330 is twice that of the first sub-pixel 310, the light-emitting area 20 is cross-shaped, the light-transmitting area 30 is square, and the light-transmitting area 30 occupies the total area of the light-emitting area 20 and the light-transmitting area 30 50%.
  • the first row of light-emitting areas with two light-emitting colors are alternately arranged, and the second row is blue light-emitting areas, which expands the deposition area of the blue light-emitting areas, Improve the stability of the display panel.
  • all sub-pixels in each pixel unit are arranged around the light-transmitting area to ensure the area of the light-transmitting area, and the pixel unit is arranged around the center point of the repeating unit to ensure the uniformity of light emission.
  • One sub-pixel in the pixel unit and the adjacent sub-pixels of all other adjacent pixel units are combined to form a light-emitting area, and the light-emitting color of the same light-emitting area is the same, so that the size of each sub-pixel can be greatly reduced , And then can reserve enough light-transmitting area to realize transparent display.
  • the sub-pixels in the same light-emitting area have the same light-emitting color
  • multiple sub-pixels of the same color can be combined and printed at the same time, which can double the ink deposition area and ensure that the ink does not
  • the factor pixel area is too small and overflow occurs, so that high-resolution transparent display can be realized under the same device accuracy.

Landscapes

  • Electroluminescent Light Sources (AREA)

Abstract

本公开涉及一种像素排列结构和显示面板，其中像素排列结构包括若干个多边形的重复单元，重复单元包括围绕重复单元的中心点设置的2n个像素单元，其中，n为大于或等于2的整数；各像素单元包括若干个子像素，若干个子像素中至少有三种发光颜色，且相邻的子像素的发光颜色不相同；像素单元内设置有透光区，且像素单元中各子像素围绕透光区设置。

Description

像素排列结构和显示面板
本申请要求于2019年8月29日提交中国专利局，申请号为201910807512.1，申请名称为“像素排列结构和显示面板”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本公开涉及电子显示技术领域，特别涉及像素排列结构和显示面板。
背景技术
透明显示作为一种全新的显示技术，可以让观察者透过显示屏看到显示屏后方的背景，这种显示技术拓展了传统显示技术的应用领域，并可以用于手机、电脑、冰箱、展示、广告牌等领域。
有机电致发光二极管(OLED)、量子点发光二极管(QLED)由于其轻薄的特点是目前透明显示面板发展的重要方向。该类显示面板主要是采用溶液加工制作而成，特别是印刷技术，被认为是实现OLED以及QLED低成本和大面积全彩显示的最有效途径。
但在印刷技术领域中，为了提高整个透明显示面板的透光性，往往需要牺牲部分发光区作为透光区，进而导致墨水沉积区减小，发光区减小，进而影响显示面板的分辨率，因此印刷技术在获得高分辨透明显示面板中具有较大挑战。
发明内容
基于此，有必要提供一种像素排列结构和显示面板。
一种像素排列结构，包括若干个呈多边形的重复单元，所述重复单元包括围绕所述重复单元的中心点设置的2n个像素单元，其中，n为大于或等于2的整数；各所述像素单元包括若干个子像素，所述若干个子像素中至少有三种发光颜色，且相邻的子像素的发光颜色不相同；所述像素单元内设置有透光区，且所述像素单元中各子像素围绕所述透光区设置。
一种显示面板，包括上述像素排列结构。
附图说明
图1中a为一实施方式的像素排列结构示意图，b为a中重复单元的放大图，c为a中像素单元的放大图；
图2中a为一实施方式的像素排列结构示意图，b为a中重复单元的放大图，c为a中像素单元的放大图；
图3中a为一实施方式的像素排列结构示意图，b为a中重复单元的放大图，c为a中像素单元的放大图；
图4中a为一实施方式的像素排列结构示意图，b为a中重复单元的放大图，c为a中像素单元的放大图；
图5中a为一实施方式的像素排列结构示意图，b为a中重复单元的放大图，c为a中像素单元的放大图；
图6为一实施方式的显示面板的结构示意图。
具体实施方式
为了便于理解本公开，下面将对本公开进行更全面的描述，并给出了本 公开的较佳实施例。但是，本公开可以以许多不同的形式来实现，并不限于本文所描述的实施例。相反地，提供这些实施例的目的是使对本公开的公开内容的理解更加透彻全面。
除非另有定义，本文所使用的所有的技术和科学术语与属于本公开的技术领域的技术人员通常理解的含义相同。本文中在本公开的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本发明。本文所使用的术语“和/或”包括一个或多个相关的所列项目的任意的和所有的组合。
如图1-图5所示，本公开一实施方式的像素排列结构10，包括若干个呈多边形的重复单元100。相邻重复单元以边对边的方式设置，以使各重复单元中处于相邻位置且具有相同发光颜色的子像素汇聚在一起，形成规则形状的发光区20。
在一实施例中，重复单元100呈平行四边形，重复单元100沿呈夹角的两个方向重复排列，以形成阵列结构的像素排列结构。
在一实施例中，重复单元100呈矩形，重复单元100沿相互垂直的两个方向重复排列，以形成阵列结构的像素排列结构。
如图1-5中b所示，重复单元100包括2n个像素单元200，其中，n为大于或等于2的整数，且像素单元200围绕重复单元300的中心点设置。
如图1-5中c所示，各像素单元200包括至少三个发光颜色不相同的子像素300，且相邻子像素的发光颜色不相同；各像素单元200内设置有透光区30，且像素单元200中各子像素300围绕透光区30设置，具体地，在一实施例中，各子像素与透光区相邻的边彼此以边对边的方式设置。
在一实施例中，重复单元100中的像素单元200呈中心对称分布，即重 复单元100中像素单元200的数目为偶数，每两个像素单元200呈中心对称排列，且所有像素单元200的对称中心重叠。在一实施例中，各重复单元100中像素单元200的面积和形状相同。在一实施例中，各子像素300的面积和形状相同。
其中，重复单元100中像素单元200的数目无特别限定，可以为大于或等于4的任意偶数，如此能够增加显示面板发光的均一性。
在一实施例中，如图1-5中b所示，所述重复单元100呈平行四边形，重复单元包括沿呈夹角的两个方向划分为2×2的四个像素单元；且重复单元沿所述呈夹角的两个方向重复排列，以形成阵列结构的像素排列结构。
在一实施例中，所述呈夹角的两个方向为相互垂直的两个方向，重复单元沿两个相互垂直的方向重复排列，以形成阵列结构的像素排列结构。在一实施例中，如图1、3-5中b所示，重复单元100呈矩形，每一个重复单元100包括4个像素单元200。在一实施例中，如图3-5中b所示，重复单元100呈正方形，每一个重复单元100包括4个像素单元200，各像素单元200的面积和形状相同。
具体地，如图1、3-5中b所示，重复单元100沿两个相互垂直的方向划分为2×2的四个像素单元200，分别为第一像素单元210、第二像素单元220、第三像素单元230和第四像素单元240，第一像素单元210和第四像素单元240呈中心对称，第二像素单元220和第三像素单元230呈中心对称，且第一像素单元210、第四像素单元240的对称中心与第二像素单元220和第三像素单元230的对称中心重合。如图2中b所示，重复单元100沿两个呈锐角的方向划分为2×2的四个像素单元200，分别为第一像素单元210、第二像素单元220、第三像素单元230和第四像素单元240，第一像素单元210和第 四像素单元240呈中心对称，第二像素单元220和第三像素单元230呈中心对称，且第一像素单元210、第四像素单元240的对称中心与第二像素单元220和第三像素单元230的对称中心重合。
在一实施例中，第一像素单元210、第二像素单元220、第三像素单元230和第四像素单元240的形状为平行四边形。在一实施例中，如图1中c所示，第一像素单元210、第二像素单元220、第三像素单元230和第四像素单元240的形状为矩形。在一实施例中，如图2中c所示，第一像素单元210、第二像素单元220、第三像素单元230和第四像素单元240的形状为菱形。在一实施例中，如图3-5中c所示，第一像素单元210、第二像素单元220、第三像素单元230和第四像素单元240的形状为正方形。
在一实施例中，透光区30的形状为四边形，在一实施例中为平行四边形，如图1-5中a所示，所述透光区30的形状包括菱形、矩形、正方形。在另一实施例中为正方形，以保证墨水沉积面积的同时，保证透光区30的面积。
在一实施例中，像素单元200的子像素300呈三角形或L形。其中，三角形包括直角三角形、等腰三角形、等边三角形等。L形是指包括两个相互垂直的矩形组成，在一实施例中矩形的长宽比为3:1，且两个矩形的长、宽相等，以利于子像素的排列。
本公开中，发光区20是指能够发出特定颜色的光的区域，每个发光区20由相邻的像素单元200中处于邻位的具有相同发光颜色的子像素300组合而成，即每个像素单元200中的一子像素300与相邻的其他所有像素单元200的处于邻位的各一个子像素300组合成一个发光区20。可理解的，每个子像素300对应一个发光单元，且本公开中同一个发光区20的子像素300的发光颜色相同。例如：图1-5中c所示，第一像素单元210、第二像素单元220、 第三像素单元230和第四像素单元240的四个子像素分别为第一子像素310、第二子像素320、第三子像素330和第四子像素340，第一像素单元210的第四子像素340、第二像素单元220的第三子像素330、第三像素单元230的第二子像素320和第四像素单元240的第一子像素310组合成一个发光区20，且第一像素单元210的第四子像素340、第二像素单元220的第三子像素330、第三像素单元230的第二子像素320和第四像素单元240的发光颜色相同。透光区30是指能够透光的区域，该区域无发光单元，能够透光，保证显示面板的透光性。
在一些实施例中，发光区20的形状为平行四边形或十字形，其中，平行四边形在一实施例中为菱形或矩形。
可理解的，发光区的形状与子像素的形状相关。在一实施例中，如图1-4所示，像素单元200中的子像素300的数量为四个，分别为第一子像素310、第二子像素320、第三子像素330和第四子像素340，第一子像素310和第四子像素340以透光区30中心点为中心呈中心对称；第二子像素320和第三子像素330以透光区30中心点为中心呈中心对称。
更进一步地，子像素300的形状为三角形或L形。可理解的，当子像素300形状为三角形，发光区的形状为平行四边形；当子像素300的形状为L形，发光区的形状为十字形。
发光区20的面积可以根据子像素300的面积进行确定，无特别限定。且本公开的发光区20由相邻的像素单元中处于邻位的子像素300组合而成，且同一个发光区内的子像素300的发光颜色相同，因此可以在不增加制备难度的基础上，相对缩小发光区的面积，预留出足够多的透光区，进而实现高分辨透明显示。
各像素单元200中子像素300的发光颜色无特别限定，可以为常用显示单元的颜色组合，例如红、蓝、绿组合。在一实施例中，所述像素单元中至少包括一个红色子像素，一个绿色子像素，一个蓝色子像素。在一实施例中，第一子像素310、第二子像素320、第三子像素330和第四子像素340中有一个子像素的发光颜色为红色、一个为蓝色、两个为绿色，且同一个像素单元中相邻的子像素的发光颜色不相同。上述颜色组合可以使得每个像素单元形成两个显示单元，即红色子像素和蓝色子像素作为公用发光区，增加单位面积显示单元数目，提高显示面板的分辨率。
在一实施例中，如图5所示，像素单元200中的子像素300的数量为三个，三分别为第一子像素310、第二子像素320和第三子像素330，第三子像素330的形状与第一子像素310和第二子像素320共同组成的形状相同。可理解的，第一子像素310和第二子像素320共同组成的形状是指沿第一子像素310和第二子像素320相邻的边拼接而成的形状。
更进一步地，第一子像素310和第二子像素320的形状为L形。更进一步地，第三子像素330的面积为第一子像素310和第二子像素320的面积之和。
在一实施例中，像素单元200的三个子像素300中，有一个子像素的发光颜色为红色、一个为绿色、一个为蓝色。更进一步地，第三子像素330的发光颜色为蓝色，以增大蓝光发光区的面积，提高显示面板的稳定性。
需要说明的是，在本实施例中，相邻子像素300通过像素界定层进行分离，故根据制备方法等的不同，相邻子像素之间的距离(像素界定层的厚度)有所差异，应理解为均在本公开的保护范围内。
上述像素单元排列结构10中，各像素单元200中的所有子像素300围绕 透光区30设置，以保证透光区30的面积，且使像素单元200围绕中心点设置，以保证发光的均一性，每个像素单元200中的一子像素300与相邻的其他所有像素单元200的处于邻位的各一个子像素300组合成一个发光区20，且同一个发光区20的发光颜色相同，如此可以大幅度缩小各子像素的尺寸，进而可以预留足够的透光区，实现透明显示。此外，由于同一个发光区20内的子像素300的发光颜色相同，如此可以将颜色相同的多个子像素结合在一起同时印刷，进而可以成倍地增大墨水的沉积区域，同时还可以保证墨水不会因子像素面积过小而发生溢出，从而在相同的设备精度下，实现高分辨透明显示。
本公开一实施方式的显示面板，包括上述像素排列结构。像素排列结构的结构及其他特征与上述相同，在此不再赘述。上述显示面板可以为电脑显示屏、手机屏、广告牌、游戏屏等。
可理解的，显示面板还可以包括基板3000、像素电极2111、像素界定层2112和透明电极2113等。其中，像素排列结构设置在基板上，像素排列结构各发光区20中的子像素300为发光单元，其至少包括一层光发射层，其还可以包括其他有机功能层，有机功能层包括但不限于空穴注入层、空穴传输层、光发射层、电子注入层、电子传输层、空穴阻挡层、电子阻挡层中一种或多种，根据发光元件的不同，光发射层可以为有机发光层或者量子点发光层。
基板3000上还可以设置驱动TFT 3001，用于驱动发光元件，该驱动TFT3001包括但不限于多晶硅TFT、金属氧化物TFT。在基板3000和像素界定层2112之间还可以形成平坦层2114，用于平坦驱动电路造成的凹凸不平表面。
且基板3000为本领域常用基板，如玻璃刚性基板或PI柔性衬底等；像 素电极2111可以为Al、Ag、Au或它们的合金，或ITO/Ag/ITO等叠层导电反射薄膜；像素电极的厚度为40-200nm。
像素界定层2112层叠在基板3000上，且限定出与上述像素排列结构对应的各发光区20和透光区30。可理解的，发光区20对应像素排列结构中的发光区，透光区30对应上述像素排列结构的透光区。具体地，像素界定层2112在基板上形成若干个像素坑，每一个像素坑对应像素排列结构的各发光区中一个子像素，且用于设置不同发光颜色的子像素的像素坑之间存在一定的间隔，该间隔对应像素排列结构中的透光区30。利用像素坑的排列方式，形成具有上述排列结构的各发光区20和透光区30。
此外，像素电极2111设于基板3000的发光区20上，且像素电极2111的部分边缘区域被像素界定层2112覆盖。像素排列结构的子像素300设于基板3000的发光区20上并覆盖像素电极2111，透明电极2113设于像素排列结构的子像素300和基板3000的透光区30上，像素电极2111可以为Al、Ag、Au或其合金，或ITO/Ag/ITO等叠层导电反射薄膜，像素电极的厚度可以为40-200nm。可理解的，透光区30无像素电极和发光功能的子像素。
其中，像素界定层2112可以为单层结构或多层结构，在此不做特别限定。在一实施例中，像素界定层2112包括亲液性像素界定层2112a和疏液性像素界定层2112b，且亲液性像素界定层2112a靠近基板3000设置。在亲液性像素界定层2112a和疏液性像素界定层2112b上形成像素坑，子像素位于像素坑内，像素坑的侧壁的底部为亲液性像素界定层2112a，顶部为疏液性像素界定层2112b，如此子像素300至少部分与亲液性像素界定层2112a接触。在一实施例中构成子像素300的各功能层总厚度大于亲液性像素界定层的厚度，这样可以在不影响子像素300的发光性能的基础上，有效地控制构成子像素 300的各功能层干燥成膜前的攀爬高度，保证了膜层界面的均一性。
其中，亲液性像素界定层2112a可以由二氧化硅和氮化硅等对溶解有机电致发光材料的溶液有吸引性的材料制备而成，疏液性像素界定层2112b可以由氟化聚酰亚胺、氟化聚甲基丙烯酸甲酯和聚硅氧烷等对溶解有机电致发光材料的溶液有排斥性的材料制备而成，在此不做特别限定。且亲液性像素界定层2112a和疏液性像素界定层2112b可以通过蒸镀工艺等制备而成。
在一实施例中，发光区20的像素界定层2112包括第一像素bank和第二像素bank，第一像素bank具有第一开口，第二像素bank位于第一开口内，并将第一开口分成两个第二开口，且第一像素bank的厚度大于第二像素bank的厚度，且两个像素电极2111分别对应两个第二开口设置，子像素设置在第一开口内，且覆盖两个像素电极。在另一实施例中，第一像素bank由亲液性像素界定层2112a和疏液性像素界定层2112b层叠而成，且亲液性像素界定层2112a靠近基板，第二像素bank由亲液性像素界定层2112a形成。
透明电极2113可以为透明导电金属氧化物、导电金属薄膜、导电石墨烯薄膜或导电碳纳米管薄膜。在一实施例中，透明电极2113为导电石墨烯薄膜，且透明电极2113的厚度为5nm-30nm，以保证透光性。透明电极2113可以采用掩模版(open mask)制备，以简化工艺。透明电极也可采用精细mask制备，其不覆盖透光区，工艺相对复杂，但透光区透光性更高。
需要说明的是，各个不同发光颜色的子像素可以具有对应像素电极，以驱动各种颜色的有机发光单元发光，但透光区不覆盖有像素电极。另外，透光区中也可以覆盖透明像素界定层，仅需能够保证显示面板的透光性即可，在此不做特别限定。
本公开另一实施方式的显示面板的制备方法，包括以下步骤：
S101：提供基板。
可以通过黄光制程在基板上制作驱动电路阵列。
S102：在基板的各发光区内制作图案化的像素电极。
还可以在形成有像素电极的基板的发光区内形成平坦化层。通过形成平坦层可以覆盖驱动电路造成的凹凸不平的表面，有利于后续各层的形成。该平坦层可以采用有机材料，并利用喷墨打印的方法制备而成，在此不做特别限定。
S103：在基板的发光区内制作像素界定层，并限定出若干个像素坑，以形成与上述像素排列结构对应的发光区和透光区。
其中，像素排列结构与上述相同，在此不再赘述。
在一实施例中，像素界定层包括第一像素bank和第二像素bank，第一像素bank具有第一开口，第二像素bank位于第一开口内，并将第一开口分成两个第二开口，且第一像素bank的厚度大于第二像素bank的厚度，且两个像素电极分别对应两个第二开口设置。在另一实施例中，第一像素bank由亲液性像素界定层和疏液性像素界定层层叠而成，且亲液性像素界定层靠近基板，第二像素bank由亲液性像素界定层形成。
S104：在像素界定层上的各像素坑内形成子像素的各功能层。
即在像素界定层上的各发光区内形成具有上述像素排列结构的各子像素，具体地，可以采用喷墨打印的方法沉积各功能层，在一实施例中，各功能层层叠在第一像素bank内，并覆盖第二像素bank。
由于上述像素排列结构中，构成同一个发光区的若干个子像素的颜色相同，这样若干个子像素可以一同印刷，不仅可以成倍的增大了墨水的沉积区域，还可以有效地减小各子像素的尺寸的同时保证墨水不会因子像素面积过 小而溢出，从而在相同的设备精度下实现高分辨率显示。
S105：在各子像素及基板的各透光区形成透明电极。
可以采用pen mask整面沉积透明电极，以简化制备工艺。
实施例1
如图1所示，本实施例的像素排列结构10，包括多个重复单元100，重复单元100沿行方向和列方向排列(图1中X方向和Y方向，X和Y相互垂直)，形成阵列结构；重复单元100沿行方向和列方向划分为2×2的四个像素单元200，分别为第一像素单元210、第二像素单元220、第三像素单元230和第四像素单元240，第一像素单元210和第四像素单元240呈中心对称，第二像素单元220和第三像素单元230呈中心对称，且第一像素单元210、第四像素单元240的对称中心与第二像素单元220和第三像素单元230的对称中心重合。
各像素单元200包括四个子像素300，四个子像素300中第一子像素310和第四子像素340发绿光，第二子像素320发红光，第三子像素330发蓝光。且像素单元200内设置有透光区30，四个子像素300围绕透光区30设置，每个像素单元200中的一子像素300与相邻的其他所有像素单元的处于邻位的各一个子像素300组合成一个发光颜色相同的发光区20。其中，像素单元200呈矩形，子像素300呈等腰直角三角形，发光区20呈菱形，透光区30呈菱形，透光区30占发光区20和透光区30总面积的50％。
通过上述像素排列结构10和可以使每个红光发光区被四个绿光发光区围绕，每个蓝光发光区被四个绿光发光区围绕，该像素排列结构10可以使红光发光区和蓝光发光区作为共用发光区，如此可以增加单位面积的显示单元 的数目，提高分辨率。
实施例2
如图2所示，本实施例的像素排列结构10，包括多个重复单元100，重复单元100沿行方向和列方向排列(图1中X方向和Y方向，X和Y具有一定夹角)，形成阵列结构；重复单元100沿行方向和列方向划分为2×2的四个像素单元200，分别为第一像素单元210、第二像素单元220、第三像素单元230和第四像素单元240，第一像素单元210和第四像素单元240呈中心对称，第二像素单元220和第三像素单元230呈中心对称，且第一像素单元210、第四像素单元240的对称中心与第二像素单元220和第三像素单元230的对称中心重合。
各像素单元200包括四个子像素300，四个子像素300中第一子像素310和第四子像素340发绿光，第二子像素320发红光，第三子像素330发蓝光。且像素单元200内设置有透光区30，四个子像素300围绕透光区30设置，每个像素单元200中的一子像素300与相邻的其他所有像素单元的处于邻位的各一个子像素300组合成一个发光颜色相同的发光区20。其中，像素单元200呈平行四边形，子像素300呈三角形，发光区20呈平行四边形，透光区30呈平行四边形，透光区30占发光区20和透光区30总面积的50％。
通过上述像素排列结构10和可以使每个红光发光区被四个绿光发光区围绕，每个蓝光发光区被四个绿光发光区围绕，该像素排列结构10可以使红光发光区和蓝光发光区作为共用发光区，如此可以增加单位面积的显示单元的数目，提高分辨率。
实施例3
如图3所示，本实施例的像素排列结构10，包括多个重复单元100，重复单元100沿E方向和F方向(如图2中E方向和F方向相互垂直)排列，形成阵列结构；重复单元沿E方向和F方向划分为2×2的四个像素单元200，分别为第一像素单元210、第二像素单元220、第三像素单元230和第四像素单元240，第一像素单元210和第四像素单元240呈中心对称，第二像素单元220和第三像素单元230呈中心对称，且第一像素单元210、第四像素单元240的对称中心与第二像素单元220和第三像素单元230的对称中心重合。
各像素单元200包括四个子像素300，四个子像素中第一子像素310和第四子像素340发绿光，第二子像素320发红光，第三子像素330发蓝光。四个子像素300围绕透光区30设置，每个像素单元200中的一子像素300与相邻的其他所有像素单元的处于邻位的各一个子像素300组合成一个发光颜色相同的发光区20。其中，像素单元200呈正方形，子像素300呈等腰三角形，发光区20呈正方形，透光区30呈正方形，透光区30占发光区20和透光区30总面积的50％。
通过上述像素排列结构10，可以使得在行方向(X方向)上，相邻的两行发光区中，第一行为两种发光颜色的发光区交替设置，且相邻的发光区之间具有第一间隔区域，第二行为相同发光颜色的发光区，且第二行的发光区对应第一行的第一间隔区域设置。同理，在列方向(Y方向)上，相邻的两列发光区中，第一列为两种发光颜色的发光区交替设置，且相邻的发光区之间具有第二间隔，第二列为相同发光颜色的发光区，且第二行的发光区对应第一行的第二间隔设置。可理解是，上述第一行、第二行、第一列和第二列仅表示相邻的两行和列，即可以奇数行、奇数列，也可以为偶数行、偶数列。
实施例4
如图4所示，本实施例的像素排列结构10，包括多个重复单元100，重复单元100沿行方向和列方向(沿X方向和Y方向)排列，形成阵列结构；重复单元100沿行方向和列方向划分为2×2的四个像素单元200，分别为第一像素单元210、第二像素单元220、第三像素单元230和第四像素单元240，第一像素单元210和第四像素单元240呈中心对称，第二像素单元220和第三像素单元230呈中心对称，且第一像素单元210、第四像素单元240的对称中心与第二像素单元220和第三像素单元230的对称中心重合。
各像素单元200包括四个子像素300，四个子像素中第一子像素310和第四子像素340发绿光，第二子像素320发红光，第三子像素330发蓝光。四个子像素300围绕透光区30设置，每个像素单元200中的一子像素300与相邻的其他所有像素单元的处于邻位的各一个子像素300组合成一个发光颜色相同的发光区20。其中，像素单元200呈正方形，子像素300呈L形，发光区20呈十字形，透光区30呈正方形，透光区30占发光区20和透光区30总面积的50％。
通过上述像素排列结构10和可以使每个红光发光区被四个绿光发光区围绕，每个蓝光发光区被四个绿光发光区围绕，该排列方式可以使红光发光区和蓝光发光区作为共用发光区，如此可以增加单位面积的显示单元的数目，提高分辨率。
实施例5
如图5所示，本实施例的像素排列结构10，包括多个重复单元100，重 复单元100沿行方向和列方向(沿X方向和Y方向)排列，形成阵列结构；重复单元100沿行方向和列方向划分为2×2的四个像素单元，分别为第一像素单元210、第二像素单元220、第三像素单元230和第四像素单元240，第一像素单元210和第四像素单元240呈中心对称，第二像素单元220和第三像素单元230呈中心对称，且第一像素单元210、第四像素单元240的对称中心与第二像素单元220和第三像素单元230的对称中心重合。
各像素单元200包括三个子像素300，三个子像素300中第一子像素310发绿光，第二子像素320发红光，第三子像素330发蓝光。三个子像素300围绕透光区30设置，每个像素单元200中的一子像素300与相邻的其他所有像素单元的处于邻位的各一个子像素300组合成一个发光颜色相同的发光区20。
其中，像素单元200呈正方形，第一子像素310和第二子像素320为L形，第三子像素330的形状与两个呈L形的第一子像素和第二子像素拼接后的形状相同，且第三子像素330的面积为第一子像素310的两倍，发光区20呈十字形，透光区30呈正方形，透光区30占发光区20和透光区30总面积的50％。
通过上述像素排列结构10，可以使得在行方向上，相邻的两行发光区中，第一行为两种发光颜色的发光区交替设置，第二行为蓝光发光区，扩大蓝光发光区的沉积面积，提高显示面板的稳定性。
上述像素单元排列结构中，各像素单元中的所有子像素围绕透光区设置，以保证透光区的面积，且使像素单元围绕重复单元的中心点设置，以保证发光的均一性，每个像素单元中的一子像素与相邻的其他所有像素单元的处于邻位的各一个子像素组合成一个发光区，且同一个发光区的发光颜色相同， 如此可以大幅度缩小各子像素的尺寸，进而可以预留足够的透光区，实现透明显示。此外，由于同一个发光区内的子像素的发光颜色相同，如此可以将颜色相同的多个子像素结合在一起同时印刷，进而可以成倍地增大墨水的沉积区域，同时还可以保证墨水不会因子像素面积过小而发生溢出，从而在相同的设备精度下，实现高分辨透明显示。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本公开的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (20)

  1. 一种像素排列结构，包括若干个呈多边形的重复单元，所述重复单元包括围绕所述重复单元的中心点设置的2n个像素单元，其中，n为大于或等于2的整数；各所述像素单元包括若干个子像素，所述若干个子像素中至少有三种发光颜色，且相邻的子像素的发光颜色不相同；所述像素单元内设置有透光区，且所述像素单元中各子像素围绕所述透光区设置。
  2. 根据权利要求1所述的像素排列结构，其中，所述重复单元呈平行四边形，所述重复单元包括沿呈夹角的两个方向划分为2×2的四个像素单元。
  3. 根据权利要求2所述的像素排列结构，其中，所述重复单元沿所述呈夹角的两个方向重复排列，以形成阵列结构的像素排列结构。
  4. 根据权利要求1所述的像素排列结构，其中，所述重复单元呈矩形，所述重复单元包括沿相互垂直的两个方向划分为2×2的四个像素单元。
  5. 根据权利要求4所述的像素排列结构，其中，所述重复单元沿相互垂直的两个方向重复排列，以形成阵列结构的像素排列结构。
  6. 根据权利要求1所述的像素排列结构，其中，所述像素排列结构中，相邻重复单元以边对边的方式设置，以使各重复单元中处于相邻位置且具有相同发光颜色的子像素汇聚在一起，形成规则形状的发光区。
  7. 根据权利要求6所述的像素排列结构，其中，所述发光区的形状为菱形、矩形或十字形。
  8. 根据权利要求1所述的像素排列结构，其中，所述透光区的形状为菱形或矩形。
  9. 根据权利要求1所述的像素排列结构，其中，所述像素单元中的子像素的数量为四个，分别为第一子像素、第二子像素、第三子像素和第四子像 素。
  10. 根据权利要求9所述的像素排列结构，其中，所述第一子像素和所述第四子像素以所述透光区中心点为对称中心呈中心对称。
  11. 根据权利要求9所述的像素排列结构，其中，所述第二子像素和所述第三子像素以所述透光区中心点为对称中心呈中心对称。
  12. 根据权利要求9所述的像素排列结构，其中，所述子像素的形状为三角形或L形。
  13. 根据权利要求12所述的像素排列结构，其中，所述L形由两个相互垂直的矩形组成。
  14. 根据权利要求1所述的像素排列结构，其中，所述像素单元中的子像素的数量为三个，分别为第一子像素、第二子像素和第三子像素。
  15. 根据权利要求14所述的像素排列结构，其中，所述第三子像素的形状与所述第一子像素和所述第二子像素共同组成的形状相同。
  16. 根据权利要求14所述的像素排列结构，其中，所述第一子像素和所述第二子像素为L形，所述L形由两个相互垂直的矩形组成。
  17. 根据权利要求1所述的像素排列结构，其特征在于，所述像素单元中至少包括一个红色子像素，一个绿色子像素，一个蓝色子像素。
  18. 一种显示面板，包括权利要求1所述的像素排列结构。
  19. 根据权利要求18所述的显示面板，其中，所述像素排列结构中，相邻重复单元以边对边的方式设置，以使各重复单元中处于相邻位置且具有相同发光颜色的子像素汇聚在一起，形成规则形状的发光区。
  20. 根据权利要求18所述的显示面板，其中，所述重复单元呈平行四边形，所述重复单元包括沿呈夹角的两个方向划分为2×2的四个像素单元；所 述重复单元沿所述呈夹角的两个方向重复排列，以形成阵列结构的像素排列结构。
PCT/CN2020/112159 2019-08-29 2020-08-28 像素排列结构和显示面板 WO2021037213A1 (zh)

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