WO2022052194A1 - Substrat d'affichage et dispositif associé - Google Patents

Substrat d'affichage et dispositif associé Download PDF

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Publication number
WO2022052194A1
WO2022052194A1 PCT/CN2020/119231 CN2020119231W WO2022052194A1 WO 2022052194 A1 WO2022052194 A1 WO 2022052194A1 CN 2020119231 W CN2020119231 W CN 2020119231W WO 2022052194 A1 WO2022052194 A1 WO 2022052194A1
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WIPO (PCT)
Prior art keywords
sub
pixel
pixels
virtual
layer
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PCT/CN2020/119231
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English (en)
Chinese (zh)
Inventor
罗昶
胡明
徐倩
吴建鹏
牛彤
黄琰
张国梦
王本莲
徐鹏
嵇凤丽
张毅
Original Assignee
京东方科技集团股份有限公司
成都京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 成都京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US17/417,336 priority Critical patent/US11785821B2/en
Priority to CN202080002231.XA priority patent/CN112470287B/zh
Publication of WO2022052194A1 publication Critical patent/WO2022052194A1/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
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/353—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • 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
    • H10K71/166—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering using selective deposition, e.g. using a mask

Definitions

  • the present disclosure relates to the field of display technology, and in particular, to a display substrate, an organic electroluminescence display panel, a high-precision metal mask and a display device.
  • Organic electroluminescence (Organic Light Emitting Diode, OLED) display device is one of the hot spots in the field of flat panel display research. Compared with liquid crystal display, OLED display device has low energy consumption, low production cost, self-luminescence, wide viewing angle and response speed. At present, in the field of flat panel display, OLED display devices have begun to replace the traditional liquid crystal display (Liquid Crystal Display, LCD).
  • LCD Liquid Crystal Display
  • the structure of the OLED display device mainly includes: a base substrate, and pixels arranged in a matrix are fabricated on the base substrate.
  • each pixel generally uses organic material to form an organic electroluminescence structure at the corresponding pixel position on the array substrate through a high-precision metal mask using an evaporation film formation technology.
  • the size of the opening of the high-precision metal mask directly determines the size of the sub-pixels.
  • the technical problem to be solved by the present disclosure is to provide a display substrate, an organic electroluminescence display panel, a high-precision metal mask and a display device, which can improve the resolution of the display device.
  • a display substrate which includes a plurality of first sub-pixels, a plurality of second sub-pixels and a plurality of third sub-pixels,
  • the first sub-pixels and the third sub-pixels are alternately arranged to form a plurality of first sub-pixel rows, the second sub-pixels form a plurality of second sub-pixel rows, and the first sub-pixel rows
  • the sub-pixel row and the second sub-pixel row are alternately arranged in the second direction, and the center connecting line of the two first sub-pixels and the two third sub-pixels distributed in two adjacent rows and two columns is a first virtual quadrilateral
  • the two first sub-pixels are located on two opposite top corners of the first virtual quadrilateral, the first virtual quadrilateral includes an interior angle a that is not 90°, and the second sub-pixels are located on the first virtual quadrilateral Inside;
  • the distance between the orthographic projection of the center of the first sub-pixel and the center of the third sub-pixel in different first sub-pixel rows on the first straight line is x, and the first straight line and The first direction is parallel; the distance between the orthographic projection of the center of the first subpixel and the center of the third subpixel in the same first subpixel row on the second straight line is y, and the second straight line is parallel to the second direction,
  • the value range of the non-90° interior angle a of the first virtual quadrilateral is (h-10°, h+10°), and h is calculated using any of the following formulas:
  • P is the distance between the centers of the two most adjacent second sub-pixels in the second sub-pixel row.
  • the value range of x is 1-10um
  • the value range of y is 1-10um
  • the inner angle a is greater than or equal to 70° and less than 90°.
  • the center line connecting the adjacent first subpixels and the third subpixels in the first direction is parallel to the first direction, and the centers connecting the first subpixels and the third subpixels adjacent in the second direction are connected.
  • the line is parallel to the second direction;
  • the line connecting the centers of the adjacent first and third subpixels in the first direction is parallel to the first direction, and the line connecting the centers of the adjacent first and third subpixels in the second direction is parallel to the second direction.
  • the first direction and the second direction are substantially perpendicular, the first direction is one of a row direction and a column direction, and the second direction is the other of a row direction and a column direction. one.
  • the shape of the second sub-pixel is selected from any one of a polygon, an axisymmetric figure, and a center-symmetric figure, the shape of the second sub-pixel has a length direction, and the shape of the second sub-pixel has a length direction.
  • the length direction is the extension direction of the longest side of the polygon, the long axis direction of the axisymmetric graph, or the direction of the line connecting the two end points on the same side of the symmetry center of a group of parallel opposite sides in the center-symmetric graph.
  • the length direction intersects both the first direction and the second direction, and
  • the width direction of the same second sub-pixel is substantially perpendicular to the length direction, and L and M are preset values.
  • the shape of the second sub-pixel has a length direction
  • the second sub-pixel has a maximum size in its length direction
  • the length direction of the second sub-pixel is related to the first direction and the second direction. All intersect, and x is greater than 0, y is greater than 0,
  • L and M are preset values.
  • the value range of L is 10-50 ⁇ m, and the value range of M is 5-40 ⁇ m.
  • the four first virtual quadrilaterals arranged in two columns and two rows form a second virtual polygon in a co-edge manner, and the second virtual polygon includes four second sub-pixels, five first sub-pixels, four third sub-pixels;
  • the four second sub-pixels are respectively located in the four first virtual quadrilaterals, one of the first sub-pixels is surrounded by the four second sub-pixels, and the other four first sub-pixels and the four third sub-pixels are respectively located in the first sub-pixels.
  • the four first sub-pixels located on the edge or vertex of the second virtual polygon and The four third sub-pixels are alternately distributed;
  • the line connecting the centers of the four first sub-pixels located at the edge or vertex position of the second virtual polygon is substantially a virtual parallelogram, and/or, the four first subpixels located at the edge or vertex position of the second virtual polygon
  • the center line of the third sub-pixel is substantially a virtual parallelogram, and/or the center line of the four second sub-pixels located in the four first virtual quadrilaterals is substantially a virtual parallelogram.
  • At least some of the center lines of the first sub-pixels are substantially located on a third straight line, and at least some of the center lines of the first sub-pixels are substantially located on a fourth line, and the third line is connected to the third line.
  • the fourth straight line is substantially parallel.
  • the third straight line and the fourth straight line are not coincident, and both are substantially parallel to the first direction;
  • the third straight line and the fourth straight line are not coincident, and both are substantially parallel to the second direction.
  • At least part of the center lines of the second sub-pixels located in the same second pixel row are substantially located on a fifth straight line, and the fifth straight line is substantially parallel to the third straight line and the fourth straight line.
  • the four first virtual quadrilaterals of the same second virtual polygon include a first virtual quadrilateral T1 and a second virtual polygon T2, and the difference between the minimum interior angle of the first virtual quadrilateral T1 and 90° is less than the absolute value of the difference between the smallest interior angle of the first virtual quadrilateral T2 and 90°, and the width to length ratio of the second subpixel in the first virtual quadrilateral T1 is greater than the width of the second subpixel in the first virtual quadrilateral T2. Aspect ratio.
  • the display substrate includes a plurality of pixel repeating units, and one pixel repeating unit includes two first sub-pixels, two third sub-pixels located in the same first virtual quadrilateral, and also includes a combination of the two first sub-pixels.
  • One of the first sub-pixels is located in the same second virtual polygon and surrounds the four second sub-pixels of the first sub-pixel.
  • the center lines of the second sub-pixels arranged along the first direction are substantially parallel to the first direction, and the centers of the second sub-pixels arranged along the second direction
  • the connecting line is substantially parallel to the second direction.
  • some of the second sub-pixels have different shapes and/or areas.
  • the shortest distance between the border of the second sub-pixel and the center of the first sub-pixel surrounding the second sub-pixel is Q1
  • the border of the second sub-pixel is The shortest distance between the centers of the third sub-pixels of the sub-pixels
  • Q1 and Q2 are not exactly the same.
  • the four second subpixels in the first virtual quadrilateral are respectively the second subpixel A, the second subpixel B, the second subpixel C, and the second subpixel D,
  • the second sub-pixel A, the second sub-pixel B, the second sub-pixel C and the second sub-pixel D have the same shape; or
  • the second sub-pixel A and the second sub-pixel B have the same shape
  • the second sub-pixel C and the second sub-pixel D have the same shape
  • the second sub-pixel A and the second sub-pixel Subpixels C are not the same shape
  • the second sub-pixel A and the second sub-pixel D have the same shape
  • the second sub-pixel C and the second sub-pixel B have the same shape
  • the second sub-pixel A and the second sub-pixel A have the same shape.
  • Subpixels C are not the same shape; or
  • the shape of the second sub-pixel A and the second sub-pixel C are the same, and the shapes of the second sub-pixel A, the second sub-pixel B and the second sub-pixel D are different; or
  • the shapes of the second sub-pixel A, the second sub-pixel B, the second sub-pixel C and the second sub-pixel D are different from each other.
  • each of the first sub-pixels has the same area, and each of the third sub-pixels has the same area.
  • the area of the first sub-pixel is S
  • the area of the second-color sub-pixel is f*S
  • the area of the third-color sub-pixel is g*S, where 0.5 ⁇ f ⁇ 0.8, 1 ⁇ g ⁇ 2.2.
  • the shapes of the first sub-pixels are approximately the same; and/or
  • the shapes of the third sub-pixels are substantially the same.
  • the shapes of the first sub-pixel, the second sub-pixel and the third sub-pixel include any one of a polygon, a circle or an ellipse.
  • the shapes of the first sub-pixel, the second sub-pixel and the third sub-pixel are selected from the group consisting of quadrilateral, hexagonal, octagonal, quadrilateral with rounded corners, and rounded corners Any of the hexagons or octagons with rounded corners, circles or ellipses.
  • the first sub-pixel is a red sub-pixel
  • the third sub-pixel is a blue sub-pixel
  • the second sub-pixel is a green sub-pixel
  • the first sub-pixel is blue sub-pixel
  • the third sub-pixel is a red sub-pixel
  • the second sub-pixel is a green sub-pixel
  • the first sub-pixel is a green sub-pixel
  • the third sub-pixel is a red sub-pixel
  • the second sub-pixel is a blue sub-pixel
  • the first sub-pixel is a green sub-pixel
  • the third sub-pixel is a blue sub-pixel
  • the second sub-pixel is a red sub-pixel.
  • Embodiments of the present disclosure also provide an organic electroluminescence display panel, including the above-mentioned display substrate.
  • a pixel definition layer is further included, the pixel definition layer includes a plurality of pixel definition layer openings, each of the first sub-pixels, each of the second sub-pixels, and each of the third sub-pixels respectively corresponds to each other.
  • One pixel defining layer opening, the first sub-pixel, the second sub-pixel, and the third sub-pixel have substantially the same shape as their corresponding openings in the pixel defining layer.
  • the first sub-pixel includes a multilayer film layer, and the multilayer film layer of the first sub-pixel at least partially covers an area outside the pixel-defining layer opening; and/or, the second sub-pixel The pixel includes a multi-layer film, and the multi-layer film layer of the second sub-pixel at least partially covers an area outside the opening of the pixel-defining layer; and/or the third sub-pixel includes a multi-layer film layer, and the The multilayer film layer of the third sub-pixel at least partially covers the area outside the opening of the pixel-defining layer.
  • the PDL openings are at least partially different in shape or area.
  • the pixel-defining layer openings corresponding to the second sub-pixels are at least partially different in shape or area.
  • the pixel defining layer openings corresponding to the second sub-pixels have unequal closest distances from at least a portion of the openings to adjacent openings.
  • Embodiments of the present disclosure also provide a display device including the organic electroluminescence display panel as described above.
  • Embodiments of the present disclosure further provide a high-precision metal mask for fabricating the above-mentioned display substrate, which includes: a plurality of opening regions, and the plurality of opening regions include positions corresponding to the first sub-pixels The corresponding first opening area, or the second opening area corresponding to the position of the second sub-pixel, or the third opening area corresponding to the position of the third sub-pixel.
  • the first sub-pixel includes a multi-layer film
  • the second sub-pixel includes a multi-layer film
  • the third sub-pixel includes a multi-layer film
  • the shape of the first opening area is the same as that of the first opening area.
  • the shape and distribution of at least one film layer in the first sub-pixel are substantially the same, and the shape and distribution of the third opening area are substantially the same as the shape and distribution of at least one film layer in the third sub-pixel
  • the shape and distribution of the second opening area are substantially the same as the shape and distribution of at least one film layer in the second sub-pixel.
  • At least two of the plurality of second opening regions corresponding to the positions of the second sub-pixels have different shapes or areas.
  • FIG. 1 is a schematic diagram of a cross-sectional structure of a display substrate according to an embodiment of the disclosure
  • 2-13 are schematic diagrams of display substrates according to embodiments of the present disclosure.
  • Embodiments of the present disclosure provide a display substrate, an organic electroluminescence display panel, a high-precision metal mask, and a display device, which can improve the resolution of the display device.
  • Embodiments of the present disclosure provide a display substrate, which includes a plurality of first sub-pixels, a plurality of second sub-pixels and a plurality of third sub-pixels,
  • the first sub-pixels and the third sub-pixels are alternately arranged to form a plurality of first sub-pixel rows, the second sub-pixels form a plurality of second sub-pixel rows, and the first sub-pixel rows
  • the sub-pixel row and the second sub-pixel row are alternately arranged in the second direction, and the center connecting line of the two first sub-pixels and the two third sub-pixels distributed in two adjacent rows and two columns is a first virtual quadrilateral
  • the two first sub-pixels are located on two opposite top corners of the first virtual quadrilateral, the first virtual quadrilateral includes an interior angle a that is not 90°, and the second sub-pixels are located on the first virtual quadrilateral Inside;
  • the distance between the orthographic projection of the center of the first sub-pixel and the center of the third sub-pixel in different first sub-pixel rows on the first straight line is x, and the first straight line and The first direction is parallel; the distance between the orthographic projection of the center of the first subpixel and the center of the third subpixel in the same first subpixel row on the second straight line is y, and the second straight line is parallel to the second direction,
  • the value range of the non-90° interior angle a of the first virtual quadrilateral is (h-10°, h+10°), and h is calculated using any of the following formulas:
  • P is the distance between the centers of the two most adjacent second sub-pixels in the second sub-pixel row.
  • the angle of a can have a certain deviation, for example, it can float up and down 10° on the basis of the calculation result h, or float up and down 5° on the basis of the calculation result h.
  • P is the approximate distance between the centers of two adjacent second sub-pixels.
  • the second sub-pixels in the second sub-pixel row may be uniformly distributed, that is, the distance between every two adjacent second sub-pixels may be approximately equal, or there may be a certain deviation, for example, the difference is less than 5 microns.
  • P may also be the average distance between adjacent second subpixels in the same subpixel row.
  • the distance between P and the center of the first sub-pixel and the center of the adjacent third sub-pixel in the same row is also approximately equal, for example, the difference is less than 5 microns. or half the distance between the centers of two adjacent first subpixels in the same subpixel row; or half the distance between the centers of two adjacent third subpixels in the same subpixel row .
  • the display substrate provided by the embodiment of the present disclosure can make the first sub-pixel, the second sub-pixel and the third sub-pixel closely arranged under the same process conditions, so as to meet the minimum requirements.
  • the resolution of the display device is improved under the condition of pixel spacing.
  • the second sub-pixels are staggered, so that under the condition of the same aperture ratio, the distance between the openings of the fine metal mask used to make the second sub-pixel can be increased, and the production of the fine metal mask can be improved.
  • the distribution of the brightness center can be made more uniform, and the display effect of the display device can be improved.
  • a first sub-pixel includes a first effective light-emitting area
  • a second sub-pixel includes a second effective light-emitting area
  • a third sub-pixel includes a third effective light-emitting area
  • a second effective light-emitting area The area of the region ⁇ a first effective light-emitting region ⁇ a third effective light-emitting region.
  • each of the first effective light-emitting regions, each of the second effective light-emitting regions, and each of the third effective light-emitting regions are separated.
  • each of the first effective light emitting regions, each of the second effective light emitting regions, and each of the third effective light emitting regions are defined by a plurality of separated openings formed in the pixel defining layer.
  • each first effective light-emitting region is defined by a light-emitting layer in the corresponding first sub-pixel, which is located between opposite anodes and cathodes in a direction perpendicular to the substrate and is driven to emit light.
  • each second effective light-emitting region is defined by a light-emitting layer in a corresponding second sub-pixel, which is located between the opposite anode and cathode in a direction perpendicular to the substrate substrate, and is driven to emit light.
  • each third effective light-emitting region is defined by a light-emitting layer in a corresponding third sub-pixel, which is located between the opposite anode and cathode in a direction perpendicular to the substrate and is driven to emit light.
  • each of the first effective light-emitting regions, each of the second effective light-emitting regions, and each of the third effective light-emitting regions is composed of a corresponding light-emitting layer and an electrode having carrier (hole or electron) transport with the corresponding light-emitting layer (Anode or cathode) or partial definition of an electrode.
  • each first effective light emitting area, each second effective light emitting area, and each third effective light emitting area are defined by at least a portion of the cathode and at least a portion of the anode that overlap in orthographic projection on the base substrate, And at least part of the cathode and at least part of the anode do not overlap with the orthographic projection of the first insulating layer on the base substrate, and the first insulating layer is located between the cathode and the anode in a direction perpendicular to the base substrate.
  • the first insulating layer includes a pixel defining layer.
  • each of the first sub-pixels, each of the second sub-pixels and each of the third sub-pixels respectively includes a first electrode, a light-emitting layer located on a side of the first electrode away from the base substrate, and a light-emitting layer located away from the first
  • the second electrode on one side of the electrode is further provided with a second insulating layer between the first electrode and the light-emitting layer, and/or between the second electrode and the light-emitting layer, in the direction perpendicular to the substrate substrate, and the second insulating layer Projecting overlap with the first electrode or the second electrode on the base substrate, and the second insulating layer has an opening, and the opening of the second insulating layer on the side facing the light-emitting layer can expose at least part of the first electrode or the second electrode , so that it can be in contact with the light-emitting layer or the functional layer of auxiliary light-emitting, each first effective light-emitting area, each second effective light-emitting area and each
  • the second insulating layer includes a pixel defining layer.
  • the auxiliary light-emitting functional layer may be a hole injection layer, a hole transport layer, an electron transport layer, a hole blocking layer, an electron blocking layer, an electron injection layer, an auxiliary light-emitting layer, an interface improvement layer, Any one or more of antireflection layers, etc.
  • the first electrode may be an anode and the second electrode may be a cathode.
  • the first electrode may include at least two layers of indium tin oxide (ITO), silver (A) g, such as three layers of ITO, Ag, and ITO.
  • the second electrode may include any one or more of magnesium (Mg), Ag, ITO, and indium zinc oxide (IZO), such as a mixed layer or alloy layer of Mg and Ag.
  • Each sub-pixel includes a light-emitting layer
  • each first sub-pixel includes a first-color light-emitting layer located in the opening and on the pixel-defining layer
  • each second sub-pixel includes a second-color light-emitting layer located in the opening and on the pixel-defining layer
  • each The third sub-pixel includes a third-color light-emitting layer within the opening and on the pixel-defining layer.
  • the preparation process of the display substrate of this embodiment may include the following steps (1) to (9).
  • a flexible display substrate with a top emission structure is taken as an example for description.
  • the base substrate 10 may be a flexible base substrate, for example, including a first flexible material layer, a first inorganic material layer, a semiconductor layer, and a second flexible material layer stacked on the glass carrier 1 and the second inorganic material layer.
  • the materials of the first flexible material layer and the second flexible material layer are polyimide (PI), polyethylene terephthalate (PET), or a surface-treated soft polymer film.
  • the materials of the first inorganic material layer and the second inorganic material layer are silicon nitride (SiNx) or silicon oxide (SiOx), etc., which are used to improve the water and oxygen resistance of the substrate.
  • the layer is also referred to as a barrier layer.
  • the material of the semiconductor layer is amorphous silicon (a-si).
  • the preparation process includes: firstly coating a layer of polyimide on the glass carrier 1, and curing to form a film Then, a first flexible (PI1) layer is formed; then a barrier film is deposited on the first flexible layer to form a first barrier (Barrier1) layer covering the first flexible layer; then an amorphous layer is deposited on the first barrier layer A silicon film to form an amorphous silicon (a-si) layer covering the first barrier layer; then a layer of polyimide is coated on the amorphous silicon layer, and a second flexible (PI2) layer is formed after curing into a film; Then, a barrier film is deposited on the second flexible layer to form a second barrier (Barrier 2 ) layer covering the second flexible layer, and the preparation of the base substrate 10 is completed.
  • the driving structure layer includes a plurality of driving circuits, each of which includes a plurality of transistors and at least one storage capacitor, such as a 2T1C, 3T1C or 7T1C design.
  • the preparation process of the driving structure layer may refer to the following description.
  • the manufacturing process of the driving circuit of the first sub-pixel 21 is taken as an example for description.
  • a first insulating film and an active layer film are sequentially deposited on the base substrate 10, and the active layer film is patterned through a patterning process to form a first insulating layer 11 covering the entire base substrate 10, and a first insulating layer 11 disposed on the first insulating layer
  • the active layer pattern on 11, the active layer pattern includes at least the first active layer.
  • a second insulating film and a first metal film are sequentially deposited, and the first metal film is patterned through a patterning process to form a second insulating layer 12 covering the pattern of the active layer, and a first insulating layer 12 disposed on the second insulating layer 12
  • a gate metal layer pattern, the first gate metal layer pattern at least includes a first gate electrode and a first capacitor electrode.
  • a third insulating film and a second metal film are sequentially deposited, and the second metal film is patterned through a patterning process to form a third insulating layer 13 covering the first gate metal layer, and a third insulating layer 13 disposed on the third insulating layer 13
  • the second gate metal layer pattern at least includes a second capacitor electrode, and the position of the second capacitor electrode corresponds to the position of the first capacitor electrode.
  • a fourth insulating film is deposited, and the fourth insulating film is patterned by a patterning process to form a fourth insulating layer 14 pattern covering the second gate metal layer, and at least two first via holes are opened on the fourth insulating layer 14,
  • the fourth insulating layer 14, the third insulating layer 13 and the second insulating layer 12 in the two first via holes are etched away, exposing the surface of the first active layer.
  • a third metal film is deposited, the third metal film is patterned through a patterning process, and a source-drain metal layer pattern is formed on the fourth insulating layer 14, and the source-drain metal layer at least includes the first source electrode and the first source electrode located in the display area. drain electrode.
  • the first source electrode and the first drain electrode may be connected to the first active layer through first via holes, respectively.
  • the first active layer, the first gate electrode, the first source electrode and the first drain electrode may form the first transistor 210, and the first capacitor electrode and the second capacitor electrode may The first storage capacitor 212 is formed.
  • the driving circuit of the second sub-pixel 22 and the driving circuit of the third-color sub-pixel 23 can be formed at the same time.
  • the first insulating layer 11 , the second insulating layer 12 , the third insulating layer 13 and the fourth insulating layer 14 are silicon oxide (SiOx), silicon nitride (SiNx) and silicon oxynitride ( Any one or more of SiON), which may be a single layer, a multi-layer or a composite layer.
  • the first insulating layer 11 is called a buffer layer, which is used to improve the water and oxygen resistance of the base substrate;
  • the second insulating layer 12 and the third insulating layer 13 are called gate insulating (GI, Gate Insulator) layers;
  • the fourth insulating layer 14 is called an interlayer insulating (ILD, Interlayer Dielectric) layer.
  • the first metal film, the second metal film and the third metal film are made of metal materials, such as any one or more of silver (Ag), copper (Cu), aluminum (Al), titanium (Ti) and molybdenum (Mo).
  • metal materials such as any one or more of silver (Ag), copper (Cu), aluminum (Al), titanium (Ti) and molybdenum (Mo).
  • Various, or alloy materials of the above metals such as aluminum neodymium alloy (AlNd) or molybdenum niobium alloy (MoNb), can be a single-layer structure, or a multi-layer composite structure, such as Ti/Al/Ti and the like.
  • the active layer film is made of amorphous indium gallium zinc oxide (a-IGZO), zinc oxynitride (ZnON), indium zinc tin oxide (IZTO), amorphous silicon (a-Si), polycrystalline silicon (p-Si), One or more materials such as hexathiophene and polythiophene, that is, the present disclosure is applicable to transistors manufactured based on oxide technology, silicon technology and organic matter technology.
  • a-IGZO amorphous indium gallium zinc oxide
  • ZnON zinc oxynitride
  • IZTO indium zinc tin oxide
  • a-Si amorphous silicon
  • p-Si polycrystalline silicon
  • One or more materials such as hexathiophene and polythiophene, that is, the present disclosure is applicable to transistors manufactured based on oxide technology, silicon technology and organic matter technology.
  • a planar thin film of organic material is coated on the base substrate 10 on which the aforementioned patterns are formed, to form a planarization (PLN, Planarization) layer 15 covering the entire base substrate 10, and through masking, exposure,
  • PPN Planarization
  • a plurality of second via holes K2 are formed on the flat layer 15 in the display area.
  • the flat layer 15 in the plurality of second via holes K2 is developed away, exposing the surface of the first drain electrode of the first transistor 210 of the driving circuit of the first sub-pixel 21 and the surface of the first drain electrode of the driving circuit of the second sub-pixel 22 respectively.
  • the surface of the first drain electrode of a transistor and the surface of the first drain electrode of the first transistor of the driving circuit of the third color sub-pixel 23 are examples of the third color sub-pixel 23 .
  • the first electrode is a reflective anode.
  • a conductive thin film is deposited on the base substrate 10 on which the aforementioned patterns are formed, and the conductive thin film is patterned through a patterning process to form the first electrode pattern.
  • the first anode 213 of the first sub-pixel 21 is connected to the first drain electrode of the first transistor 210 through the second via K2
  • the second anode 223 of the second sub-pixel 22 is connected to the second sub-pixel 22 through the second via K2
  • the first drain electrode of the first transistor of the third color sub-pixel 23 is connected to the first drain electrode of the first transistor of the third color sub-pixel 23 through the second via K2.
  • the first electrode may employ a metallic material, such as any one or more of magnesium (Mg), silver (Ag), copper (Cu), aluminum (Al), titanium (Ti), and molybdenum (Mo).
  • a metallic material such as any one or more of magnesium (Mg), silver (Ag), copper (Cu), aluminum (Al), titanium (Ti), and molybdenum (Mo).
  • Various, or alloy materials of the above metals such as aluminum neodymium alloy (AlNd) or molybdenum niobium alloy (MoNb) can be a single-layer structure, or a multi-layer composite structure, such as Ti/Al/Ti, etc., or, a metal and Stacked structures formed of transparent conductive materials, such as reflective materials such as ITO/Ag/ITO, Mo/AlNd/ITO, etc.
  • a pixel definition layer (PDL, Pixel Definition Layer) pattern is formed.
  • a pixel definition film is coated on the base substrate 10 on which the aforementioned pattern is formed, and a pixel definition layer pattern is formed by masking, exposing, and developing processes.
  • the pixel definition layer 30 in the display area includes a plurality of sub-pixel definition parts 302, a plurality of pixel definition layer openings 301 are formed between adjacent sub-pixel definition parts 302, and the pixel definition layer 30 in the plurality of pixel definition layer openings 301 is developed and removed , at least part of the surface of the first anode 213 of the first subpixel 21 , at least part of the surface of the second anode 223 of the second subpixel 22 and at least part of the surface of the third anode 233 of the third color subpixel 23 are exposed, respectively.
  • the pixel definition layer 30 may employ polyimide, acrylic, polyethylene terephthalate, or the like.
  • a thin film of organic material is coated on the base substrate 10 on which the aforementioned patterns are formed, and a pattern of spacer pillars 34 is formed by masking, exposing, and developing processes.
  • the spacer posts 34 may act as a support layer configured to support the FMM during the evaporation process.
  • a repeating unit is spaced between two adjacent spacer columns 34.
  • the spacer columns 34 may be located in adjacent first sub-pixels 21 and third adjacent ones. between color sub-pixels 23 .
  • an organic functional layer and a second electrode are sequentially formed on the base substrate on which the pattern is formed.
  • the second electrode is a transparent cathode.
  • the light-emitting element can emit light from the side away from the base substrate 10 through the transparent cathode to realize top emission.
  • the organic functional layers of the light emitting element include: a hole injection layer, a hole transport layer, a light emitting layer, and an electron transport layer.
  • the hole injection layer 241 and the hole transport layer 242 are sequentially formed by vapor deposition on the base substrate 10 on which the aforementioned patterns are formed by using an open mask, and then the hole injection layer 241 and the hole transport layer 242 are sequentially vapor deposited by using FMM
  • the blue light-emitting layer 236 , the green light-emitting layer 216 and the red light-emitting layer 226 are formed, and then the electron transport layer 243 , the cathode 244 and the light coupling layer 245 are formed by successive evaporation using an open mask.
  • the hole injection layer 241 , the hole transport layer 242 , the electron transport layer 243 and the cathode 244 are all common layers of a plurality of sub-pixels.
  • the organic functional layer may further include: a microcavity adjustment layer between the hole transport layer and the light emitting layer.
  • FMM can be used to sequentially evaporate a blue microcavity adjusting layer, a blue light-emitting layer, a green microcavity adjusting layer, a green light-emitting layer, a red microcavity adjusting layer, and a red light-emitting layer.
  • the organic functional layer is formed in the sub-pixel region to realize the connection between the organic functional layer and the anode.
  • the cathode is formed on the pixel definition layer and connected to the organic functional layer.
  • the cathode may employ any one or more of magnesium (Mg), silver (Ag), aluminum (Al), or an alloy made of any one or more of the foregoing metals , or a transparent conductive material, such as indium tin oxide (ITO), or a multi-layer composite structure of metal and transparent conductive material.
  • Mg magnesium
  • Ag silver
  • Al aluminum
  • ITO indium tin oxide
  • a light coupling layer may be formed on the side of the cathode 244 away from the base substrate 10 , and the light coupling layer may be a common layer of a plurality of sub-pixels.
  • the light coupling layer can cooperate with the transparent cathode to increase the light output.
  • the material of the light coupling layer can be a semiconductor material. However, this embodiment does not limit this.
  • an encapsulation layer is formed on the base substrate 10 on which the aforementioned patterns are formed, and the encapsulation layer may include a stacked first encapsulation layer 41 , a second encapsulation layer 42 and a third encapsulation layer 43 .
  • the first encapsulation layer 41 is made of inorganic material and covers the cathode 244 in the display area.
  • the second encapsulation layer 42 adopts an organic material.
  • the third encapsulation layer 43 is made of inorganic material and covers the first encapsulation layer 41 and the second encapsulation layer 42 .
  • the encapsulation layer may adopt a five-layer structure of inorganic/organic/inorganic/organic/inorganic.
  • the value range of x may be 1-10um, and the value range of y may be 1-10um; further, the value range of x may be 2-7um, and the value range of y may be 2- 7um; or, the value range of x may be 2-8um, and the value range of y may be 2-8um.
  • the interior angle a is greater than or equal to 70° and less than 90°; further, the interior angle a is greater than or equal to 75° but not 90°.
  • the center line connecting the adjacent first subpixels and the third subpixels in the first direction is parallel to the first direction, and the centers connecting the first subpixels and the third subpixels adjacent in the second direction are connected.
  • the line is parallel to the second direction;
  • the line connecting the centers of the adjacent first and third subpixels in the first direction is parallel to the first direction, and the line connecting the centers of the adjacent first and third subpixels in the second direction is parallel to the second direction.
  • the range of c may be 0°-30°, or the range of c may be 0-20°, or the range of c may be 0-10°, or the range of c may be 0-5°, For example, 1°, 2°, 3°, 4°, etc.
  • the first direction and the second direction are substantially perpendicular, the first direction is one of a row direction and a column direction, and the second direction is the other of a row direction and a column direction. one.
  • the shape of the second sub-pixel is selected from any one of polygons, axisymmetric graphics, and centrosymmetric graphics, such as an irregular polygon, such as a rectangle with one corner or three corners cut off, Cut off two adjacent corner rectangles, cut off two opposite corner rectangles, etc.
  • the shape of the second sub-pixel has a length direction, and the length direction of the second sub-pixel is the longest side of the polygon
  • the extension direction, the long axis direction of the axisymmetric graph, or the direction of the line connecting the two end points on the same side of the symmetry center of a group of parallel opposite sides in the center symmetry graph, the length direction of the second sub-pixel is the same as the first direction and the first direction. Both directions intersect, and
  • L and M are preset values, wherein the value range of L is 10-50 ⁇ m, and the value range of M is 5-40 ⁇ m, In a specific example, the value range of L and M may be 8-30 ⁇ m.
  • the shape of the second sub-pixel has a length direction
  • the second sub-pixel has a maximum size in its length direction
  • the length direction of the second sub-pixel is related to the first direction and the second direction. All intersect, and x is greater than 0, y is greater than 0,
  • L and M are preset values
  • the value range of L is 10-50 ⁇ m
  • the value range of M is 5-40 ⁇ m.
  • the value range of L and M may be 8-30 ⁇ m.
  • the four first virtual quadrilaterals arranged in two columns and two rows form a second virtual polygon in a co-edge manner, and the second virtual polygon may be a quadrilateral or an octagon.
  • the second virtual polygon includes four second sub-pixels, five first sub-pixels, and four third sub-pixels;
  • the four second sub-pixels are respectively located in the four first virtual quadrilaterals, one of the first sub-pixels is surrounded by the four second sub-pixels, and the other four first sub-pixels and the four third sub-pixels are respectively located in the first sub-pixels.
  • the four first sub-pixels located on the edge or vertex of the second virtual polygon and The four third sub-pixels are alternately distributed;
  • the line connecting the centers of the four first sub-pixels located at the edge or vertex position of the second virtual polygon is substantially a virtual parallelogram, and/or, the four first subpixels located at the edge or vertex position of the second virtual polygon
  • the center line of the third sub-pixel is substantially a virtual parallelogram, and/or the center line of the four second sub-pixels located in the four first virtual quadrilaterals is substantially a virtual parallelogram.
  • the second virtual polygon may be a concave hexagon, wherein two third sub-pixels are located on two sides thereof, and the other two third sub-pixels and four first sub-pixels are respectively located on the concave hexagon sides.
  • the second virtual polygon may be a concave octagon, and the four first sub-pixels and the four third sub-pixels are respectively located at the eight vertices of the concave octagon.
  • the center connecting line of the four first sub-pixels located at the edge or vertex position of the second virtual polygon is approximately a virtual rectangle; the edge located at the edge of the second virtual polygon Or the center connecting lines of the four third sub-pixels at the vertex positions are substantially virtual rectangles; the center connecting lines of the four second sub-pixels located in the four first virtual quadrilaterals are substantially virtual rectangles.
  • At least some of the center lines of the first sub-pixels are substantially located on a third straight line, and at least some of the center lines of the first sub-pixels are substantially located on a fourth line, and the third line is connected to the third line.
  • the fourth straight line is substantially parallel.
  • the third straight line and the fourth straight line are not coincident, and both are substantially parallel to the first direction;
  • the third straight line and the fourth straight line are not coincident, and both are substantially parallel to the second direction.
  • At least part of the center lines of the second sub-pixels located in the same second pixel row are substantially located on a fifth straight line, and the fifth straight line is substantially parallel to the third straight line and the fourth straight line.
  • the second virtual polygon may be a concave polygon or a convex polygon.
  • the first virtual quadrilateral forms a second virtual polygon in a common edge manner, that is, two adjacent first virtual quadrilaterals in the row direction share one side in the column direction; two adjacent first virtual quadrilaterals in the column direction share one row square. up side.
  • the four first virtual quadrilaterals of the same second virtual polygon include a first virtual quadrilateral T1 and a second virtual polygon T2, and the difference between the minimum interior angle of the first virtual quadrilateral T1 and 90° is less than the absolute value of the difference between the smallest interior angle of the first virtual quadrilateral T2 and 90°, and the width to length ratio of the second subpixel in the first virtual quadrilateral T1 is greater than the width of the second subpixel in the first virtual quadrilateral T2. Aspect ratio.
  • the length of the second sub-pixel may be the maximum size of the second sub-pixel in the length direction thereof, and the width of the second sub-pixel may be the maximum size of the second sub-pixel in the width direction thereof.
  • the second sub-pixel includes two mutually perpendicular symmetry axes, and the width-length ratio of the second sub-pixel is the ratio of the smaller size to the larger size on the two symmetry axes.
  • the display substrate includes a plurality of pixel repeating units, and one pixel repeating unit includes two first sub-pixels, two third sub-pixels located in the same first virtual quadrilateral, and also includes a combination of the two first sub-pixels.
  • One of the first sub-pixels is located in the same second virtual polygon and surrounds the four second sub-pixels of the first sub-pixel.
  • the structure of the pixel repeating unit located at the edge of the display substrate may be different from that of the pixel repeating unit located inside the display substrate, and the pixel repeating unit located at the edge of the display substrate may lack some sub-pixels.
  • the center lines of the second sub-pixels arranged along the first direction are substantially parallel to the first direction, and the centers of the second sub-pixels arranged along the second direction
  • the connecting line is substantially parallel to the second direction.
  • some of the second sub-pixels have different shapes and/or areas.
  • the shape of some second sub-pixels is different from the shape of other second sub-pixels, or the area of some second sub-pixels is different from that of other second sub-pixels, or the shape and area of some second sub-pixels are different from those of other second sub-pixels.
  • the shapes and areas of the other second sub-pixels are different.
  • the shortest distance between the border of the second sub-pixel and the center of the first sub-pixel surrounding the second sub-pixel is Q1
  • the border of the second sub-pixel is The shortest distance between the centers of the third sub-pixels of the sub-pixels
  • Q1 and Q2 are not exactly the same.
  • the four second subpixels in the first virtual quadrilateral are respectively the second subpixel A, the second subpixel B, the second subpixel C, and the second subpixel D,
  • the second sub-pixel A, the second sub-pixel B, the second sub-pixel C and the second sub-pixel D have the same shape; or
  • the second sub-pixel A and the second sub-pixel B have the same shape
  • the second sub-pixel C and the second sub-pixel D have the same shape
  • the second sub-pixel A and the second sub-pixel Subpixels C are not the same shape
  • the second sub-pixel A and the second sub-pixel D have the same shape
  • the second sub-pixel C and the second sub-pixel B have the same shape
  • the second sub-pixel A and the second sub-pixel A have the same shape.
  • Subpixels C are not the same shape; or
  • the shapes of the second sub-pixel A and the second sub-pixel C are the same, and the shapes of the second sub-pixel A, the second sub-pixel B and the second sub-pixel D are different from each other; or
  • the shapes of the second sub-pixel A, the second sub-pixel B, the second sub-pixel C and the second sub-pixel D are different from each other.
  • the first subpixel is a red subpixel
  • the third subpixel is a blue subpixel
  • the second subpixel is a green subpixel
  • the first subpixel The pixel is a blue sub-pixel
  • the third sub-pixel is a red sub-pixel
  • the second sub-pixel is a green sub-pixel.
  • the first sub-pixel is a green sub-pixel
  • the third sub-pixel is a red sub-pixel
  • the second sub-pixel is a blue sub-pixel
  • the first sub-pixel The pixel is a green sub-pixel
  • the third sub-pixel is a blue sub-pixel
  • the second sub-pixel is a red sub-pixel.
  • each first sub-pixel has the same area. This ensures that in any light-emitting pixel point composed of the first sub-pixel, the second sub-pixel and the third sub-pixel, the light-emitting area of the first sub-pixel is the same.
  • the areas of at least two first sub-pixels may also be different, which is not limited herein.
  • the area of each second sub-pixel is the same. This ensures that in any light-emitting pixel point composed of the first sub-pixel, the second sub-pixel and the third sub-pixel, the light-emitting area of the second sub-pixel is the same.
  • the area of at least two second sub-pixels may also be different, which is not limited herein.
  • each third sub-pixel has the same area. This ensures that in any light-emitting pixel point composed of the first sub-pixel, the second sub-pixel and the third sub-pixel, the light-emitting area of the third sub-pixel is the same.
  • the areas of at least two third sub-pixels may also be different, which is not limited herein.
  • the area of the first sub-pixel is S
  • the area of the second-color sub-pixel is f*S
  • the area of the third-color sub-pixel is g*S, where 0.5 ⁇ f ⁇ 0.8, 1 ⁇ g ⁇ 2.2, in this way, the brightness center distribution of any light-emitting pixel point composed of the first sub-pixel, the second sub-pixel and the third sub-pixel can be more uniform, and the display effect can be improved.
  • the area of the blue sub-pixel can be designed to be larger than that of the red sub-pixel and the area of the green subpixel.
  • the area of the green sub-pixel can be set to be smaller than that of the red sub-pixel.
  • the area of the green sub-pixel may also be the same as the area of the red sub-pixel, which is not limited herein.
  • the shapes of the first sub-pixels are approximately the same.
  • the shapes of at least two first sub-pixels may also be inconsistent, which is not limited herein.
  • the shapes of the second sub-pixels are approximately the same.
  • the shapes of at least two second sub-pixels may also be inconsistent, which is not limited herein.
  • the arrangement angles may be the same, or the arrangement angles may be the same.
  • the cloth angle can be rotated arbitrarily, which is not limited here.
  • the shapes of the third sub-pixels are approximately the same.
  • the shapes of at least two third sub-pixels may also be inconsistent, which is not limited herein.
  • the specific shape, positional relationship, parallel and angular relationship of the second sub-pixel, the first sub-pixel and the third sub-pixel can be designed as needed.
  • the shape, position and relative positional relationship of each sub-pixel roughly meet the above conditions, they all belong to the display substrate provided by the embodiment of the present disclosure.
  • inconsistent shapes of the sub-pixels mentioned in the embodiments of the present disclosure refer to the inconsistent shapes of the sub-pixels, for example, one is a circle and the other is a rectangle.
  • consistent figures of the sub-pixels mentioned in the embodiments of the present disclosure refer to similar or identical shapes of the sub-pixels.
  • the shapes of the first sub-pixel, the second sub-pixel and the third sub-pixel include any one of a polygon, a circle or an ellipse.
  • the shapes of the first sub-pixel, the second sub-pixel and the third sub-pixel are selected from quadrilateral, hexagonal, octagonal, quadrilateral with rounded corners, hexagonal with rounded corners, or Any of an octagon, circle, or ellipse with rounded corners.
  • the mentioned sub-pixel is located at a certain position, which refers to the position range where the sub-pixel is located, as long as the sub-pixel overlaps with the position.
  • the center of the sub-pixel can be made to overlap with the position.
  • the center of the sub-pixel can also not overlap with the position, that is, there is an offset between the two, which is not limited here.
  • the center of the sub-pixel may be the geometric center of the sub-pixel figure or the center of the light-emitting color of the sub-pixel, which is not limited herein.
  • the center of each sub-pixel is as close to the corresponding position as possible.
  • the first sub-pixels 01 and the third sub-pixels 03 are alternately arranged to form a plurality of first sub-pixel rows, and the second sub-pixels 02 form a plurality of second sub-pixel rows.
  • the first sub-pixel row and the second sub-pixel row are alternately arranged in the column direction.
  • the two first sub-pixels 01 are located on two opposite corners of the first virtual quadrilateral T
  • the two third sub-pixels 03 are located on the opposite two corners of the first virtual quadrilateral T.
  • a second sub-pixel 02 is located inside the first virtual quadrangle T. As shown in FIG.
  • the center of the second sub-pixel 02 may coincide with the center of the first virtual quadrilateral T, or may not coincide with the center of the first virtual quadrilateral T.
  • the center connecting line of the first sub-pixel 01 and the third sub-pixel 03 adjacent in the column direction is parallel to the column direction; the first sub-pixel adjacent in the row direction 01 and the center line of the third sub-pixel 03 are not parallel to the row direction, and have an included angle c1, and c1 is greater than 0° and less than 90°, that is, two sides of the first virtual quadrilateral T are parallel to the column direction, and the other two sides are parallel to the column direction.
  • the four adjacent first virtual quadrilaterals T are arranged in two columns and two rows to form a large virtual polygon (that is, the largest dashed box in Figure 2), that is, the second virtual polygon, and the first sub-pixel 01 is located in the second virtual polygon.
  • the center position of the second virtual polygon and the four corner positions of the second virtual polygon, the third sub-pixel 03 is located at the midpoint position of the side of the second virtual polygon, and the center connection line of the second sub-pixel 02 in the second virtual polygon is virtual rectangle.
  • the above pixel arrangement can make the distribution of the brightness center 04 of the light-emitting pixel points composed of the first sub-pixel 01, the second sub-pixel 02 and the third sub-pixel 03 more uniform, which can improve the display effect of the display device.
  • staggering the arrangement of the second sub-pixels 02 can increase the manufacturing margin of the metal mask; in this way, under the condition of the same aperture ratio, the mask for making the second sub-pixel 02 can be opened.
  • the distance D between (corresponding to the smallest solid line frame surrounding the second sub-pixel 02 ) increases, which improves the fabrication margin of the metal mask and achieves higher resolution.
  • the distance between the orthographic projection of the center of the first sub-pixel 01 and the center of the third sub-pixel 03 in the same first sub-pixel row on the second straight line is y, and the second straight line is parallel to the column direction , the value range of y is 1-10um, or, it can be 2-10um.
  • the interior angle a smaller than 90° of the first virtual quadrilateral T satisfies the following formula:
  • the obtuse angle a1 of the first virtual quadrilateral T may be 95°; the acute angle b1 may be 85°.
  • the shape of the second sub-pixel 02 has a length direction
  • the second sub-pixel 02 has the largest size in its length direction
  • the length direction of the second sub-pixel 02 intersects both the row direction and the column direction.
  • one pixel repeating unit 05 (the part included in the dotted box in FIG. 4 ) includes two third sub-pixels 03 , two first sub-pixels 01 and four second sub-pixels 02 .
  • the center lines of the first sub-pixels 01 are substantially located on the third straight line Z3, and at least some of the center lines of the third sub-pixels 03 are substantially located on the fourth line Z4.
  • the third straight line is substantially parallel to the fourth straight line.
  • the center connection line Z5 of the second sub-pixels 02 arranged in the first direction is substantially parallel to the first direction
  • the second sub-pixels 02 arranged along the second direction is substantially parallel to the second direction.
  • the center line connecting the four first sub-pixels 01 located at the edges or vertices of the second virtual polygon is approximately a virtual rectangle;
  • the line connecting the centers of the four third sub-pixels 03 at the edge or vertex position of is roughly a virtual rectangle;
  • the center line connecting the four second sub-pixels 02 located in the four first virtual quadrilaterals is roughly a virtual rectangle.
  • the first sub-pixels 01 and the third sub-pixels 03 are alternately arranged to form a plurality of first sub-pixel rows, and the second sub-pixels 02 form a plurality of second sub-pixel rows.
  • the first sub-pixel row and the second sub-pixel row are alternately arranged in the column direction.
  • the two first sub-pixels 01 are located on the two opposite corners of the first virtual quadrilateral T
  • the two third sub-pixels 03 are located on the opposite two corners of the first virtual quadrilateral T.
  • a second sub-pixel 02 is located inside the first virtual quadrangle T. As shown in FIG.
  • the center of the second sub-pixel 02 may coincide with the center of the first virtual quadrilateral T, or may not coincide with the center of the first virtual quadrilateral T.
  • the center line connecting the adjacent first sub-pixel 01 and the third sub-pixel 03 in the column direction is not parallel to the column direction, and has an included angle c2, and c2 is greater than 0° Less than 90°; the center line of the adjacent first subpixel 01 and the third subpixel 03 in the row direction is parallel to the row direction, that is, two sides of the first virtual quadrilateral T are parallel to the row direction, and the other two sides are parallel to the row direction.
  • the adjacent four first virtual quadrilaterals T are arranged in two columns and two rows to form a large virtual polygon (that is, the largest dashed box in FIG. 6 ), that is, the second virtual polygon, and the first subpixel 01 is located in the second virtual polygon.
  • the center position of the second virtual polygon and the four corner positions of the second virtual polygon, the third sub-pixel 03 is located at the midpoint position of the side of the second virtual polygon, and the center connection line of the second sub-pixel 02 in the second virtual polygon is virtual rectangle.
  • the above-mentioned pixel arrangement can make the distribution of the brightness center of the light-emitting pixel points composed of the first sub-pixel 01, the second sub-pixel 02 and the third sub-pixel 03 more uniform, which can improve the display effect of the display device.
  • the manufacturing margin of the metal mask can be increased; in this way, the mask for making the second sub-pixel 02 can be opened under the condition of the same aperture ratio. The distance between them is increased, the manufacturing margin of the metal mask is improved, and higher resolution is achieved.
  • the distance between the orthographic projections of the center of the first sub-pixel 01 and the center of the third sub-pixel 03 located in different first sub-pixel rows on the first straight line is x, and the first straight line and the row
  • the directions are parallel, and the value range of x is 1-10um, or, it can be 2-10um.
  • the interior angle a smaller than 90° of the first virtual quadrilateral T satisfies the following formula:
  • the acute angle a2 of the first virtual quadrilateral T may be 85°; the obtuse angle b2 may be 95°.
  • the shape of the second sub-pixel 02 has a length direction
  • the second sub-pixel 02 has the largest size in its length direction
  • the length direction of the second sub-pixel 02 intersects both the row direction and the column direction.
  • one pixel repeating unit 05 (the part included in the dotted box in FIG. 7 ) includes two third sub-pixels 03 , two first sub-pixels 01 and four second sub-pixels 02 .
  • the center lines of the first sub-pixels 01 are substantially located on the third straight line Z3, and at least some of the center lines of the third sub-pixels 03 are substantially located on the fourth line Z4.
  • the third straight line is substantially parallel to the fourth straight line.
  • the center connection line Z5 of the second sub-pixels 02 arranged in the first direction is substantially parallel to the first direction
  • the second sub-pixels 02 arranged along the second direction is substantially parallel to the second direction.
  • the center line connecting the four first sub-pixels 01 located at the edges or vertices of the second virtual polygon is approximately a virtual rectangle;
  • the line connecting the centers of the four third sub-pixels 03 at the edge or vertex position of is roughly a virtual rectangle;
  • the center line connecting the four second sub-pixels 02 located in the four first virtual quadrilaterals is roughly a virtual rectangle.
  • the first sub-pixels 01 and the third sub-pixels 03 are alternately arranged to form a plurality of first sub-pixel rows, and the second sub-pixels 02 form a plurality of second sub-pixel rows.
  • the first sub-pixel row and the second sub-pixel row are alternately arranged in the column direction.
  • the two first sub-pixels 01 are located on the two opposite corners of the first virtual quadrilateral T
  • the two third sub-pixels 03 are located on the opposite two corners of the first virtual quadrilateral T.
  • a second sub-pixel 02 is located inside the first virtual quadrangle T. As shown in FIG.
  • the center of the second sub-pixel 02 may coincide with the center of the first virtual quadrilateral T, or may not coincide with the center of the first virtual quadrilateral T.
  • the center line connecting the adjacent first sub-pixel 01 and the third sub-pixel 03 in the column direction is not parallel to the column direction, and has an included angle e1, and e1 is greater than 0° less than 90°;
  • the center line of the adjacent first sub-pixel 01 and the third sub-pixel 03 in the row direction is not parallel to the row direction, and has an included angle d1, and d1 is greater than 0° and less than 90°; that is, the first virtual quadrilateral T
  • Two of the sides are not parallel to the row direction, and the other two sides are not parallel to the column direction; specifically, e1 and d1 can range from 0° to 30°.
  • the range of e1 and d1 may be 0-20°, or the range of e1 and d1 may be 0-10°, or the range of e1 and d1 may be 0-5°, such as 1°, 2° , 3°, 4°, etc.
  • the adjacent four first virtual quadrilaterals T are arranged in two columns and two rows to form a large virtual polygon (that is, the largest dashed box in Figure 9), that is, the second virtual polygon, and the first sub-pixel 01 is located in the second virtual polygon.
  • the center position of the second virtual polygon and the four corner positions of the second virtual polygon, the third sub-pixel 03 is located at the midpoint position of the side of the second virtual polygon, and the center connection line of the second sub-pixel 02 in the second virtual polygon is virtual rectangle.
  • the above-mentioned pixel arrangement can make the distribution of the brightness center of the light-emitting pixel points composed of the first sub-pixel 01, the second sub-pixel 02 and the third sub-pixel 03 more uniform, which can improve the display effect of the display device.
  • the manufacturing margin of the metal mask can be increased; in this way, the mask for making the second sub-pixel 02 can be opened under the condition of the same aperture ratio. The distance between them is increased, the manufacturing margin of the metal mask is improved, and higher resolution is achieved.
  • the distance between the orthographic projections of the center of the first sub-pixel 01 and the center of the third sub-pixel 03 located in different first sub-pixel rows on the first straight line is x, and the first straight line and the row The directions are parallel; the distance between the orthographic projection of the center of the first subpixel 01 and the center of the third subpixel 03 in the same first subpixel row on the second straight line is y, and the second straight line is parallel to the column direction; y , the value range of x is 1-10um, or, it can be 2-10um.
  • the interior angle a smaller than 90° of the first virtual quadrilateral T satisfies the following formula:
  • the interior angle a of the first virtual quadrilateral T satisfies the following formula:
  • the acute angle a4 of the first virtual quadrilateral T where the second subpixel B is located may be 80°; the obtuse angle b4 may be 100°.
  • the angle a3 of the first virtual quadrilateral T where the second subpixel A is located may be 90°; the angle b3 may be 90°
  • one pixel repeating unit 05 (the part included in the dotted box in FIG. 10 ) includes two third sub-pixels 03 , two first sub-pixels 01 and four second sub-pixels 02 .
  • At least part of the central connection line of the first sub-pixel 01 is substantially located on the third straight line Z3, and at least part of the central connection line of the third sub-pixel 03 is substantially located on the fourth straight line Z4, and the The third straight line is substantially parallel to the fourth straight line.
  • the center connection line Z5 of the second sub-pixels 02 arranged in the first direction is substantially parallel to the first direction
  • the second sub-pixels 02 arranged along the second direction is substantially parallel to the second direction.
  • the angle a5 of a first virtual quadrilateral T may be 94°; the angle b5 may be 86°.
  • the angle a6 of the other first virtual quadrilateral T may be 102°; the angle b6 may be 78°.
  • the angle a7 of the other first virtual quadrilateral T may be 78°; the angle b7 may be 102°
  • the shape of the second sub-pixel 02 has a length direction
  • the second sub-pixel 02 has the largest size in its length direction
  • the length direction of the second sub-pixel 02 intersects both the row direction and the column direction.
  • the dimension L' of the second sub-pixel in its length direction generally satisfies
  • the dimension L' of the second sub-pixel in its length direction approximately satisfies
  • the dimension L' of the second sub-pixel in its length direction approximately satisfies
  • the dimension L' of the second sub-pixel in its length direction approximately satisfies
  • reference numeral 02 refers to all the second sub-pixels, and the second sub-pixel A, the second sub-pixel B, the second sub-pixel C and the second sub-pixel D are used to distinguish a second virtual polygon different second subpixels within.
  • an embodiment of the present disclosure further provides an organic electroluminescent display panel
  • the display substrate may be any of the above-mentioned display substrates provided by the implementation of the present disclosure, and adjacent first virtual quadrilaterals share a side edge.
  • the patterns are arranged in row and column directions. That is, two adjacent display substrates share the first sub-pixel 01 and the third sub-pixel 03 located on the sides of the adjacent first virtual quadrangle, because the principle of solving the problem of the organic electroluminescent display panel is similar to that of the aforementioned display substrate.
  • the implementation of the organic electroluminescent display panel can refer to the implementation of the aforementioned pixel arrangement structure, and the repetition will not be repeated.
  • Adjacent first virtual quadrilaterals are arranged in the row and column directions in a manner of sharing sides, that is, two adjacent first virtual quadrilaterals in the row direction share one side in the column direction; A virtual quadrilateral shares one side in the row direction.
  • one side of the two adjacent first virtual quadrilaterals may be the same, but the shapes of the adjacent two first virtual quadrilaterals may be different, for example, the size of the inner corner may be different.
  • the organic electroluminescence display panel further includes a pixel definition layer
  • the pixel definition layer includes a plurality of pixel definition layer openings, each of the first sub-pixels, each of the second sub-pixels, each of the first sub-pixels, and each of the first sub-pixels.
  • Each of the three sub-pixels corresponds to an opening of the pixel defining layer, and the shapes of the first sub-pixel, the second sub-pixel, and the third sub-pixel are substantially the same as the shape of the opening of the corresponding pixel-defining layer.
  • the first sub-pixel includes a multilayer film layer, and the multilayer film layer of the first sub-pixel at least partially covers an area outside the pixel-defining layer opening; and/or, the second sub-pixel The pixel includes a multi-layer film, and the multi-layer film layer of the second sub-pixel at least partially covers an area outside the opening of the pixel-defining layer; and/or the third sub-pixel includes a multi-layer film layer, and the The multilayer film layer of the third sub-pixel at least partially covers the area outside the opening of the pixel-defining layer.
  • the PDL openings are at least partially different in shape or area.
  • the pixel-defining layer openings corresponding to the second sub-pixels are at least partially different in shape or area.
  • the pixel defining layer openings corresponding to the second sub-pixels have unequal closest distances from at least a portion of the openings to adjacent openings.
  • an embodiment of the present disclosure further provides a display device, including any of the above-mentioned organic electroluminescence display panels provided by the embodiment of the present disclosure.
  • the display device can be any product or component with a display function, such as a mobile phone, a tablet computer, a TV, a monitor, a notebook computer, a digital photo frame, a navigator, and the like.
  • a display function such as a mobile phone, a tablet computer, a TV, a monitor, a notebook computer, a digital photo frame, a navigator, and the like.
  • an embodiment of the present disclosure also provides a high-precision metal mask for fabricating any of the above-mentioned display substrates provided by the embodiment of the present disclosure, and has a plurality of opening areas, wherein the plurality of opening areas include the same A first opening area corresponding to the position of the first sub-pixel, or a second opening area corresponding to the position of the second sub-pixel, or a third opening area corresponding to the position of the third sub-pixel. Since the principle of solving the problem of the high-precision metal mask is similar to that of the aforementioned display substrate, the implementation of the high-precision metal mask can refer to the implementation of the aforementioned display substrate, and the repetition will not be repeated.
  • the first sub-pixel includes a multi-layer film
  • the second sub-pixel includes a multi-layer film
  • the third sub-pixel includes a multi-layer film
  • the shape of the first opening area is the same as that of the first opening area.
  • the shape and distribution of at least one film layer in the first sub-pixel are substantially the same, and the shape and distribution of the third opening area are substantially the same as the shape and distribution of at least one film layer in the third sub-pixel
  • the shape and distribution of the second opening area are substantially the same as the shape and distribution of at least one film layer in the second sub-pixel.
  • At least two of the plurality of second opening regions corresponding to the positions of the high-precision metal mask and the second sub-pixels are different in shape or area.
  • the shape of the second opening area used to fabricate at least one film layer in the second sub-pixel is as shown in the solid line frame 06, and the four second sub-pixels in the second virtual polygon
  • the shapes of 02 are the same, and the shapes of the second opening regions are also the same, so that the patterning process can be simplified.
  • the shape of the second opening area used to make at least one film layer in the second sub-pixel is as shown in the solid line frame 06, and the four second sub-pixels in the second virtual polygon
  • the shapes of the pixels 02 are all the same, and the shapes of the second opening regions are different, so that the process margin during vapor deposition can be increased, and the yield rate of the display panel can be improved.
  • the distance between the adjacent second opening regions is greater than or equal to the process limit distance to meet the process requirements.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

La présente invention concerne un substrat d'affichage et un dispositif associé. Le substrat d'affichage comprend une pluralité de premiers sous-pixels, une pluralité de deuxièmes sous-pixels (02), et une pluralité de troisièmes sous-pixels (03). Dans une première direction, les premiers sous-pixels (01) et les troisièmes sous-pixels (03) sont agencés en alternance pour former une pluralité de premières rangées de sous-pixels ; les deuxièmes sous-pixels (02) forment une pluralité de secondes rangées de sous-pixels ; les premières rangées de sous-pixels et les secondes rangées de sous-pixels sont disposées en alternance dans une seconde direction ; les lignes de connexion centrale de deux premiers sous-pixels (01) et deux troisièmes sous-pixels (03) réparties en deux rangées adjacentes et deux colonnes adjacentes forment un premier quadrilatère virtuel (T) ; les deux premiers sous-pixels (01) sont situés sur deux sommets opposés du premier quadrilatère virtuel (T) ; le premier quadrilatère virtuel (T) comprend un angle intérieur a qui n'est pas de 90 degrés ; les seconds sous-pixels (02) sont situés à l'intérieur du premier quadrilatère virtuel (T). La résolution d'un dispositif d'affichage peut être améliorée.
PCT/CN2020/119231 2020-09-10 2020-09-30 Substrat d'affichage et dispositif associé WO2022052194A1 (fr)

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CN202080002231.XA CN112470287B (zh) 2020-09-10 2020-09-30 一种显示基板及相关装置

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