CN113921730A - Display panel - Google Patents
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- CN113921730A CN113921730A CN202111154747.9A CN202111154747A CN113921730A CN 113921730 A CN113921730 A CN 113921730A CN 202111154747 A CN202111154747 A CN 202111154747A CN 113921730 A CN113921730 A CN 113921730A
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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
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/842—Containers
- H10K50/8428—Vertical spacers, e.g. arranged between the sealing arrangement and the OLED
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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
- H10K59/352—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels the areas of the RGB subpixels being different
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2101/00—Properties of the organic materials covered by group H10K85/00
- H10K2101/10—Triplet emission
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Abstract
The application discloses display panel, including the pixel structure, it includes: the pixel array comprises a plurality of pixel unit groups, wherein sub-pixels in each pixel unit group are arranged according to a preset virtual graph, and each virtual graph comprises two virtual rectangles which are adjacently arranged according to a first direction. Each pixel unit group comprises a plurality of sub-pixels with different colors, the first sub-pixel is arranged close to the center point of the virtual rectangle, the second sub-pixel and the third sub-pixel are arranged inside the virtual graph along the first direction and are arranged close to two side edges, and the area of the first sub-pixel is larger than that of the second sub-pixel or that of the third sub-pixel. The first sub-pixel comprises a first electrode, a first light-emitting layer and a second electrode which are sequentially stacked, and in the same pixel unit group, the first light-emitting layer covers at least two adjacent first electrodes so as to combine evaporation openings, so that the design difficulty of a mask and the color mixing risk after evaporation are reduced.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel.
Background
The 21 st century is called as a brand-new electronic information age, the demand of people for information is increasing due to the development of networks, and smart phones, watches and (tablet) computers become an essential part of people's lives. The development of display technology is greatly promoted by the arrival of the information age, and people pursue a large-size flexible display device which is lighter, thinner and energy-saving, so that organic electroluminescence becomes the mainstream of the market.
The OLED (Organic Light Emitting Diode) has the characteristics of self-luminescence, high response speed, wide viewing angle and the like, and has a wide application prospect. At present, all OLED devices use a precision Metal Mask (FMM) to realize evaporation of RGB luminescent materials by evaporation of small-molecule organic luminescent materials. Because FMM makes the degree of difficulty great, and the flagging appears very easily, leads to abnormalities such as evaporation coating colour mixture, dislocation, so can set up the spacer post layer (PS) on the base plate, play the effect of supporting FMM to avoid evaporation coating colour mixture and dislocation. PS is usually performed in the array process, and is mainly formed by coating a layer of organic material and performing photolithography. However, the organic material is soft and is easily scratched by FMM during the evaporation process, which results in panel failure during the reliability test.
Disclosure of Invention
The invention aims to provide a display panel to solve the technical problems that adjacent sub-pixels in a pixel structure obtained by evaporation in the prior art are mixed in color and a metal mask is easy to scratch a spacing column layer, so that packaging is invalid.
To achieve the above object, the present invention provides a display panel including a pixel structure, the pixel structure including: the pixel array comprises a plurality of pixel unit groups, wherein sub-pixels in each pixel unit group are arranged according to a preset virtual graph, and each virtual graph comprises two virtual rectangles which are adjacently arranged according to a first direction; each of the pixel cell groups includes: a plurality of first sub-pixels, disposed near a center point of the virtual rectangle, where each first sub-pixel includes a first electrode, a first light-emitting layer, and a second electrode, which are sequentially stacked, and in a same pixel unit group, the first light-emitting layer covers at least two adjacent first electrodes; the plurality of second sub-pixels are arranged in the virtual graph along the first direction and are close to two side edges; and a plurality of third sub-pixels arranged inside the virtual graph along the first direction and close to two side edges, wherein the first sub-pixels, the second sub-pixels and the third sub-pixels transmit light of different colors, and the area of the first sub-pixels is larger than that of the second sub-pixels or that of the third sub-pixels.
Further, in the same pixel unit group, the second sub-pixels and the third sub-pixels of the two or more pixel units arranged along the first direction are arranged on the same straight line; in the first virtual rectangle, two second sub-pixels belonging to the two pixel units are adjacently arranged and are positioned between two third sub-pixels; in the second virtual rectangle, two third sub-pixels belonging to the two pixel units are adjacently arranged and located between the two second sub-pixels.
Further, in the pixel structure, the two virtual rectangles form a first boundary line at a junction in the first direction; in the first virtual rectangle, the distance between the third sub-pixel close to the first boundary line and the first boundary line is greater than a first preset threshold value and is less than or equal to the distance between the first sub-pixel close to the first boundary line and the first boundary line; in the second virtual rectangle, the distance between the second sub-pixel close to the first boundary line and the first boundary line is greater than a second preset threshold value and is less than or equal to the distance between the first sub-pixel close to the first boundary line and the first boundary line.
Furthermore, in the same pixel unit group, a second boundary line is formed at the joint of two adjacent pixel units arranged along the first direction, and two first sub-pixels, two second sub-pixels and two third sub-pixels belonging to the two pixel units are respectively symmetrical about the second boundary line; in the first virtual rectangle, the distance between two second sub-pixels belonging to the two pixel units is equal to the distance between two first sub-pixels belonging to the two pixel units; in the second virtual rectangle, the pitch of the two third sub-pixels belonging to the two pixel units is equal to the pitch of the two first sub-pixels belonging to the two pixel units.
Further, two pixel cell groups arranged along the first direction are a smallest repeating unit.
Furthermore, in the same pixel unit group, the distance between the first sub-pixel and the adjacent second sub-pixel is a first pitch, and the distance between the first sub-pixel and the adjacent third sub-pixel is a second pitch; in two pixel unit groups adjacently arranged along the first direction, the shortest distance between a first sub-pixel in one pixel unit group and a first sub-pixel in the other pixel unit group is a third pitch; wherein the first pitch or the second pitch is smaller than the third pitch.
Further, in the pixel structure, two or more pixel unit groups are adjacently arranged according to a second direction, and the second direction is perpendicular to the first direction; the second sub-pixel or the third sub-pixel belonging to two adjacent pixel unit groups are adjacently arranged; the second sub-pixel comprises a first electrode, a second light-emitting layer and a second electrode which are sequentially stacked; the third sub-pixel comprises a first electrode, a third light-emitting layer and a second electrode which are sequentially stacked; in the same pixel unit group or two adjacent pixel unit groups, the second light emitting layer covers at least two adjacent first electrodes; the third light emitting layer covers at least two adjacent first electrodes.
Further, the display panel further includes: and the plurality of spacing columns are arranged at the joint of the two virtual rectangles at intervals and are positioned in the gap between the first sub-pixel and the second sub-pixel or the third sub-pixel in the second direction.
Further, in the same pixel unit group, the second sub-pixels and the third sub-pixels of the two or more pixel units arranged along the first direction are arranged on the same straight line and are alternately arranged.
Further, in the same pixel unit group, two adjacent pixel units arranged along the first direction are a first pixel unit and a second pixel unit; wherein, in a first pixel unit of a first virtual rectangle, the second sub-pixel is positioned at a first top corner of the virtual rectangle; in a second pixel unit of the first virtual rectangle, the third sub-pixel is positioned at a second top corner of the virtual rectangle; in a first pixel unit of a second virtual rectangle, the third sub-pixel is positioned at a first top corner of the virtual rectangle; in a second pixel unit of a second virtual rectangle, the second sub-pixel is located at a second top corner of the virtual rectangle.
Furthermore, two adjacent pixel unit groups are arranged along the first direction, the joint of the two virtual rectangles forms a first boundary line, and one pixel unit group and the other pixel unit group are symmetrical about the first boundary line.
Further, in the pixel structure, two or more pixel unit groups are adjacently arranged according to a second direction, and the second direction is perpendicular to the first direction; and the joint of the two virtual rectangles forms a third boundary line, and one pixel unit group and the other pixel unit group are symmetrical about the third boundary line.
Further, in the pixel structure, two or more pixel unit groups are adjacently arranged according to a second direction, and the second direction is perpendicular to the first direction; the second sub-pixel or the third sub-pixel belonging to two adjacent pixel unit groups are adjacently arranged; the second sub-pixel comprises a first electrode, a second light-emitting layer and a second electrode which are sequentially stacked; the third sub-pixel comprises a first electrode, a third light-emitting layer and a second electrode which are sequentially stacked; in the same pixel unit group or two adjacent pixel unit groups, the second light emitting layer covers at least two adjacent first electrodes; the third light emitting layer covers at least two adjacent first electrodes.
Further, the display panel further includes: a plurality of spaced columns spaced apart at a midpoint of the first dividing line.
The display panel comprises a pixel structure, wherein a light emitting layer covers two or more first electrodes of sub-pixels with the same color at the same time, so that sub-pixels with the same color can be combined to form evaporation openings in the evaporation process, and the design difficulty of a mask and the color mixing risk after evaporation are reduced.
Furthermore, a spacing column is arranged at a gap between two pixel unit groups which are adjacently arranged up and down, and the spacing column is positioned at a gap between the first sub-pixel and the second pixel or the third sub-pixel in the row direction; or the spacing columns are arranged at the middle points of the connecting lines of the two pixel unit groups which are arranged adjacently up and down, so that the spacing columns do not completely occupy the positions of the columns of the first sub-pixels, and do not completely occupy the positions of the columns of the second sub-pixels and the third sub-pixels, the risk that the spacing columns are scratched is reduced, the influence of scratching of the spacing columns on the light emitting areas is also reduced, and the yield of the display panel is improved.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic view of a pixel structure provided in embodiment 1 of the present application.
Fig. 2 is a schematic structural diagram of a sub-pixel provided in embodiment 1 of the present application.
Fig. 3 is a schematic view of a pixel structure provided in embodiment 2 of the present application.
The components of the drawings are identified as follows:
100. a pixel structure; 10. a pixel cell group;
y, a first direction; x, a second direction;
11. a virtual rectangle; 11a, a first virtual rectangle;
11b, a second virtual rectangle; 1. a first sub-pixel;
2. a second sub-pixel; 3. a third sub-pixel;
20. a spacer pillar; 101. a pixel unit;
l1, first demarcation line; l2, second dividing line;
l3, third demarcation line; 41. a first light-emitting layer;
42. a second light emitting layer; 43. a third light emitting layer;
44. a first electrode; 45. a second electrode;
101a, a first pixel unit; 101b, a second pixel unit;
301. a first apex angle; 302. a second apex angle.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. In the description of the present application, it is to be understood that the terms "center", "longitudinal", "row", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Example 1
The present embodiment provides a display panel, which is an OLED display panel, including a pixel structure 100 with a plurality of sub-pixels arranged.
As shown in fig. 1, the present embodiment provides a pixel structure 100, which includes a plurality of pixel unit groups 10 arranged in an array, wherein sub-pixels in each pixel unit group 10 are arranged according to a preset virtual pattern, and the virtual pattern includes two virtual rectangles 11 adjacently arranged according to a first direction y. Two pixel unit groups 10 adjacently arranged along the first direction y (i.e. two adjacent pixel unit groups 10 arranged above and below) are a smallest repeating unit, i.e. sub-pixels arranged in a matrix of 8 rows and 4 columns.
Each pixel unit group 10 is four pixel units 101 arranged in a matrix, each pixel unit 101 includes a first sub-pixel 1, a second sub-pixel 2 and a third sub-pixel 3, wherein the first sub-pixel 1 is a blue (B) sub-pixel, the second sub-pixel 2 is a red (R) sub-pixel, and the third sub-pixel 3 is a green (G) sub-pixel.
Specifically, the plurality of first sub-pixels 1 are disposed near a center point of the virtual rectangle 11, the plurality of second sub-pixels 2 are disposed inside the virtual graph and near two side edges along the first direction y, and the plurality of third sub-pixels 3 are disposed inside the virtual graph and near two side edges along the first direction y. In the pixel structure 100, two or more pixel cell groups 10 are adjacently disposed in the second direction x, which is perpendicular to the first direction y. The second sub-pixel 2 or the third sub-pixel 3 belonging to two adjacent pixel cell groups 10 are adjacently disposed.
As shown in fig. 2, the first sub-pixel 1 includes a first electrode 44, a first light-emitting layer 41, and a second electrode 45 stacked in sequence, and in the same pixel unit group 10, the first light-emitting layer 41 covers at least two adjacent first electrodes 44. The second sub-pixel 2 includes a first electrode 44, a second light emitting layer 42, and a second electrode 45 stacked in this order. The third sub-pixel 3 includes a first electrode 44, a third light emitting layer 43, and a second electrode 45 stacked in this order. In the same pixel cell group 10, or in two adjacent pixel cell groups 10, the second light emitting layer 42 covers at least two adjacent first electrodes 44, and the third light emitting layer 43 covers at least two adjacent first electrodes 44.
As can be seen from fig. 1, in the same pixel unit group 10, the first electrodes 44 of the four adjacent first sub-pixels 1 are covered by one first light-emitting layer 41, and the first electrodes 44 of the two adjacent second sub-pixels 2 are covered by one second light-emitting layer 42. Alternatively, in the same pixel cell group 10, the first electrodes 44 of the four first sub-pixels 1 disposed adjacent to each other are covered with one first light-emitting layer 41, and the first electrodes 44 of the two third sub-pixels 3 disposed adjacent to each other are covered with one third light-emitting layer 43.
In two pixel cell groups 10 adjacently disposed along the second direction x (i.e., two pixel cell groups 10 disposed left and right), the first electrodes 44 of the four second sub-pixels 2 adjacently disposed are covered by one second light-emitting layer 42, and the first electrodes 44 of the two third sub-pixels 3 adjacently disposed are covered by one third light-emitting layer 43. Alternatively, in two pixel cell groups 10 adjacently disposed on the left and right, the first electrodes 44 of two second sub-pixels 2 adjacently disposed are covered by one second light-emitting layer 42, and the first electrodes 44 of four third sub-pixels 3 adjacently disposed are covered by one third light-emitting layer 43.
In general, in the same pixel unit group 10 or two adjacent pixel unit groups 10, the first electrodes 44 of two or more sub-pixels with the same color that are adjacently arranged are covered by one light emitting layer, and such arrangement combines the evaporation openings of the sub-pixels, thereby reducing the design difficulty of a mask (FMM) and the color mixing risk after evaporation.
In the present embodiment, the first sub-pixel 1, the second sub-pixel 2, and the third sub-pixel 3 transmit light of different colors, and the area of the first sub-pixel 1 is larger than the area of the second sub-pixel 2 or the area of the third sub-pixel. Therefore, the total number of sub-pixels in the present embodiment is reduced, high resolution can be achieved, and power consumption can be reduced by improving light efficiency.
In the same pixel cell group 10, the second subpixels 2 and the third subpixels 3 of the two or more pixel cells 101 arranged along the first direction y are arranged on the same straight line. Further, in the first virtual rectangle 11a, two second sub-pixels 2 belonging to two pixel units 101 are adjacently disposed and located between two third sub-pixels 3. In the second virtual rectangle 11b, two third sub-pixels 3 belonging to two pixel units 101 are adjacently disposed and located between two second sub-pixels 2.
In the pixel structure 100, a first boundary line L1 is formed at the junction of two virtual rectangles 11 defined in the first direction y. That is, a first boundary line L1 can be formed at the junction of every two virtual rectangles 11 arranged one above the other. In the first virtual rectangle 11a, the distance between the third sub-pixel 3 close to the first dividing line L1 and the first dividing line L1 is greater than the first predetermined threshold value and less than or equal to the distance between the first sub-pixel 1 close to the first dividing line L1 and the first dividing line L1. In the second virtual rectangle 11b, the distance between the second sub-pixel 2 close to the first boundary line L1 and the first boundary line L1 is greater than the second predetermined threshold value and less than or equal to the distance between the first sub-pixel 1 close to the first boundary line L1 and the first boundary line L1.
In the same pixel cell group 10, a second boundary line L2 is formed at the junction of two adjacent pixel cells 101 arranged along the first direction y, and the two first sub-pixels 1, the two second sub-pixels 2, and the two third sub-pixels 3 belonging to the two pixel cells 101 are respectively symmetrical with respect to the second boundary line L2. In the first virtual rectangle 11a, the pitch of the two second sub-pixels 2 belonging to the two pixel units 101 is equal to the pitch of the two first sub-pixels 1 belonging to the two pixel units 101. In the second virtual rectangle 11b, the pitch of the two third sub-pixels 3 belonging to the two pixel units 101 is equal to the pitch of the two first sub-pixels 1 belonging to the two pixel units 101. It should be noted that, in the present embodiment, two pixel cell groups 10 are arranged along the second direction x, and the two virtual rectangles 11 form a third dividing line L3 at the junction in the first direction y, and the pixel cell group 10 on the left side and the pixel cell group 10 on the right side are symmetrical with respect to the third dividing line L3.
In the present embodiment, in the first virtual rectangle 11a or the second virtual rectangle 11b, the distance between the second pixel and the third sub-pixel 3 adjacently disposed along the first direction y is smaller than or equal to the distance between the first sub-pixel 1 and the second sub-pixel 2 adjacently disposed along the second direction x; alternatively, the pitch between the second and third sub-pixels 3 and 1 adjacently disposed along the first direction y is smaller than or equal to the pitch between the third and second sub-pixels 3 and 3 adjacently disposed along the second direction x.
In the same pixel unit group 10, the distance between the first sub-pixel 1 and the adjacent second sub-pixel 2 is a first pitch, and the distance between the first sub-pixel 1 and the adjacent third sub-pixel 3 is a second pitch. In two pixel cell groups 10 adjacently disposed along the first direction y, the shortest distance between the first subpixel 1 in one pixel cell group 10 and the first subpixel 1 in the other pixel cell group 10 is the third pitch. In the present embodiment, the first pitch or the second pitch is smaller than the third pitch, so that two pixel cell groups 10 adjacent in the first direction y can reserve sufficient space to place the spacer 20.
In this embodiment, the plurality of spacers 20 are disposed at the joint of the two virtual rectangles 11 at intervals, and are located in the gap between the first sub-pixel 1 and the second sub-pixel 2 or the third sub-pixel 3 in the second direction x. That is to say, the spacing pillars 20 are disposed at the gaps between two pixel unit groups 10 disposed vertically adjacent to each other, and the spacing pillars 20 are located at the gaps between the first sub-pixel 1 and the second pixel or the third sub-pixel 3 in the row direction, so that the spacing pillars 20 do not completely occupy the positions of the columns where the first sub-pixel 1 is located, nor completely occupy the positions of the columns where the second sub-pixel 2 and the third sub-pixel 3 are located, thereby reducing the risk of scratching the spacing pillars 20, and reducing the influence of scratching the light emitting area by the spacing pillars 20, thereby improving the yield of the display panel.
Further, the spacer 20 of this embodiment is an inverted trapezoid, which can increase the contact area between the mask and the spacer 20, and effectively support the mask, thereby reducing the risks of color mixing and dislocation.
Example 2
The present embodiment provides a display panel, which includes most of the features of embodiment 1, and is different in that in the same pixel unit group 10, the second sub-pixels 2 and the third sub-pixels 3 of two or more pixel units 101 arranged along the first direction y are arranged on the same straight line and are alternately arranged; a plurality of the spacers 20 are provided at intervals at the midpoint of the first dividing line L1.
As shown in fig. 3, the present embodiment provides a pixel structure 200, which includes a plurality of pixel unit groups 10 arranged in an array, wherein sub-pixels in each pixel unit group 10 are arranged according to a preset virtual pattern, and the virtual pattern includes two virtual rectangles 11 adjacently arranged according to a first direction y. Two pixel unit groups 10 adjacently arranged along the first direction y (i.e. two adjacent pixel unit groups 10 arranged above and below) are a smallest repeating unit, i.e. sub-pixels arranged in a matrix of 8 rows and 4 columns.
Each pixel unit group 10 is four pixel units 101 arranged in a matrix, each pixel unit 101 includes a first sub-pixel 1, a second sub-pixel 2 and a third sub-pixel 3, wherein the first sub-pixel 1 is a blue (B) sub-pixel, the second sub-pixel 2 is a red (R) sub-pixel, and the third sub-pixel 3 is a green (G) sub-pixel.
Specifically, the plurality of first sub-pixels 1 are disposed near a center point of the virtual rectangle 11, the plurality of second sub-pixels 2 are disposed inside the virtual graph and near two side edges along the first direction y, and the plurality of third sub-pixels 3 are disposed inside the virtual graph and near two side edges along the first direction y. In the pixel structure 200, two or more pixel cell groups 10 are adjacently disposed in the second direction x, which is perpendicular to the first direction y. The second sub-pixel 2 or the third sub-pixel 3 belonging to two adjacent pixel cell groups 10 are adjacently disposed.
The first sub-pixel 1 includes a first electrode 44, a first light emitting layer 41, and a second electrode 45 stacked in sequence, and in the same pixel unit group 10, the first light emitting layer 41 covers at least two adjacent first electrodes 44. The second sub-pixel 2 includes a first electrode 44, a second light emitting layer 42, and a second electrode 45 stacked in this order. The third sub-pixel 3 includes a first electrode 44, a third light emitting layer 43, and a second electrode 45 stacked in this order. In the same pixel cell group 10, or in two adjacent pixel cell groups 10, the second light emitting layer 42 covers at least two adjacent first electrodes 44, and the third light emitting layer 43 covers at least two adjacent first electrodes 44.
As shown in fig. 3, in the same pixel unit group 10, the first electrodes 44 of the four first sub-pixels 1 disposed adjacently are covered by one first light-emitting layer 41.
In two pixel cell groups 10 arranged along the first direction y (i.e., two pixel cell groups 10 arranged one above the other), the first electrodes 44 of two or four adjacent second sub-pixels 2 are covered by one second light-emitting layer 42, or the first electrodes 44 of two or four adjacent third sub-pixels 3 are covered by one third light-emitting layer 43.
In two pixel cell groups 10 arranged along the second direction x (i.e., two pixel cell groups 10 arranged left and right), the first electrodes 44 of two second sub-pixels 2 arranged adjacently are covered by one second light-emitting layer 42, and the first electrodes 44 of two third sub-pixels 3 arranged adjacently are covered by one third light-emitting layer 43.
In general, in the same pixel unit group 10 or two adjacent pixel unit groups 10, the first electrodes 44 of two or more adjacent sub-pixels with the same color are covered by one light emitting layer, so that the evaporation openings of the sub-pixels with the same color are combined, and the design difficulty of a mask (FMM) and the color mixing risk after evaporation are reduced.
In the present embodiment, the first sub-pixel 1, the second sub-pixel 2, and the third sub-pixel 3 transmit light of different colors, and the area of the first sub-pixel 1 is larger than the area of the second sub-pixel 2 or the area of the third sub-pixel. Therefore, the total number of sub-pixels in the present embodiment is reduced, high resolution can be achieved, and power consumption can be reduced by improving light efficiency.
In the same pixel cell group 10, the second subpixels 2 and the third subpixels 3 of the two or more pixel cells 101 arranged along the first direction y are arranged on the same straight line and alternately arranged.
In the same pixel cell group 10, two adjacent pixel cells 101 arranged along the first direction y are a first pixel cell 101a and a second pixel cell 101b, wherein in the first pixel cell 101a of the first virtual rectangle 11a, the second sub-pixel 2 is located at the first top corner 301 of the virtual rectangle 11; in the second pixel cell 101b of the first virtual rectangle 11a, the third sub-pixel 3 is located at a second top corner 302 of the virtual rectangle 11. In the first pixel cell 101a of the second virtual rectangle 11b, the third sub-pixel 3 is located at the first top corner 301 of the virtual rectangle 11; in the second pixel cell 101b of the second virtual rectangle 11b, the second sub-pixel 2 is located at the second top corner 302 of the virtual rectangle 11.
Two adjacent pixel cell groups 10 arranged along the first direction y (i.e., two pixel cell groups 10 arranged one above the other), the junctions of the two virtual rectangles 11 form a first boundary line L1, and one pixel cell group 10 and another pixel cell group 10 are symmetrical with respect to the first boundary line L1.
In the pixel structure 200, two or more pixel unit groups 10 are adjacently arranged according to a second direction x, and the second direction x is perpendicular to the first direction y; wherein, two adjacent pixel cell groups 10 arranged along the second direction x, the junction of the two virtual rectangles 11 forms a third dividing line L3, and one pixel cell group 10 and the other pixel cell group 10 are symmetrical with respect to the third dividing line L3.
In this embodiment, the plurality of spacers 20 are disposed at the midpoint of each first boundary line L1 at intervals, so that the spacers 20 do not completely occupy the positions of the columns of the first sub-pixel 1, nor the second sub-pixel 2 and the third sub-pixel 3, thereby reducing the risk of scratching the spacers 20, and reducing the influence of the scratches of the spacers 20 on the light emitting region, thereby improving the yield of the display panel.
Further, the spacer 20 of this embodiment is an inverted trapezoid, which can increase the contact area between the mask and the spacer 20, and effectively support the mask, thereby reducing the risks of color mixing and dislocation.
The display panel comprises a pixel structure, wherein a light emitting layer covers two or more first electrodes of sub-pixels with the same color at the same time, so that sub-pixels with the same color can be combined to form evaporation openings in the evaporation process, and the design difficulty of a mask and the color mixing risk after evaporation are reduced.
Furthermore, a spacing column is arranged at a gap between two pixel unit groups which are adjacently arranged up and down, and the spacing column is positioned at a gap between the first sub-pixel and the second pixel or the third sub-pixel in the row direction; or the spacing columns are arranged at the middle points of the connecting lines of the two pixel unit groups which are arranged adjacently up and down, so that the spacing columns do not completely occupy the positions of the columns of the first sub-pixels, and do not completely occupy the positions of the columns of the second sub-pixels and the third sub-pixels, the risk that the spacing columns are scratched is reduced, the influence of scratching of the spacing columns on the light emitting areas is also reduced, and the yield of the display panel is improved.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The display panel provided by the embodiment of the present application is described in detail above, and a specific example is applied to illustrate the principle and the implementation manner of the present application, and the description of the embodiment is only used to help understanding the technical solution and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (14)
1. A display panel comprising a pixel structure, the pixel structure comprising: the pixel array comprises a plurality of pixel unit groups, wherein sub-pixels in each pixel unit group are arranged according to a preset virtual graph, and each virtual graph comprises two virtual rectangles which are adjacently arranged according to a first direction;
each of the pixel cell groups includes:
a plurality of first sub-pixels, disposed near a center point of the virtual rectangle, where each first sub-pixel includes a first electrode, a first light-emitting layer, and a second electrode, which are sequentially stacked, and in a same pixel unit group, the first light-emitting layer covers at least two adjacent first electrodes;
the plurality of second sub-pixels are arranged in the virtual graph along the first direction and are close to two side edges;
and a plurality of third sub-pixels arranged inside the virtual graph along the first direction and close to two side edges, wherein the first sub-pixels, the second sub-pixels and the third sub-pixels transmit light of different colors, and the area of the first sub-pixels is larger than that of the second sub-pixels or that of the third sub-pixels.
2. The display panel according to claim 1,
in the same pixel unit group, the second sub-pixels and the third sub-pixels of more than two pixel units arranged along the first direction are arranged on the same straight line;
in the first virtual rectangle, two second sub-pixels belonging to the two pixel units are adjacently arranged and are positioned between two third sub-pixels;
in the second virtual rectangle, two third sub-pixels belonging to the two pixel units are adjacently arranged and located between the two second sub-pixels.
3. The display panel according to claim 1,
in the pixel structure, a plurality of pixels are formed,
the two virtual rectangles form a first boundary line at the junction in the first direction;
in the first virtual rectangle, the distance between the third sub-pixel close to the first boundary line and the first boundary line is greater than a first preset threshold value and is less than or equal to the distance between the first sub-pixel close to the first boundary line and the first boundary line;
in the second virtual rectangle, the distance between the second sub-pixel close to the first boundary line and the first boundary line is greater than a second preset threshold value and is less than or equal to the distance between the first sub-pixel close to the first boundary line and the first boundary line.
4. The display panel according to claim 3,
in the same group of pixel cells,
the junction of two adjacent pixel units arranged along the first direction forms a second boundary line,
two first sub-pixels, two second sub-pixels and two third sub-pixels which belong to the two pixel units are respectively symmetrical about the second boundary line;
in the first virtual rectangle, the distance between two second sub-pixels belonging to the two pixel units is equal to the distance between two first sub-pixels belonging to the two pixel units;
in the second virtual rectangle, the pitch of the two third sub-pixels belonging to the two pixel units is equal to the pitch of the two first sub-pixels belonging to the two pixel units.
5. The display panel according to claim 1,
two pixel cell groups arranged along the first direction are a minimum repeating unit.
6. The display panel according to claim 1,
in the same group of pixel cells,
the distance between the first sub-pixel and the adjacent second sub-pixel is a first pitch,
the distance between the first sub-pixel and the adjacent third sub-pixel is a second distance;
in two pixel cell groups adjacently disposed along the first direction,
the shortest distance between the first sub-pixel in one pixel unit group and the first sub-pixel in the other pixel unit group is a third distance;
wherein the first pitch or the second pitch is smaller than the third pitch.
7. The display panel according to claim 1,
in the pixel structure, two or more pixel unit groups are adjacently arranged according to a second direction, and the second direction is vertical to the first direction; the second sub-pixel or the third sub-pixel belonging to two adjacent pixel unit groups are adjacently arranged;
the second sub-pixel comprises a first electrode, a second light-emitting layer and a second electrode which are sequentially stacked; the third sub-pixel comprises a first electrode, a third light-emitting layer and a second electrode which are sequentially stacked;
in the same pixel cell group, or, in two adjacent pixel cell groups,
the second light-emitting layer covers at least two adjacent first electrodes; the third light emitting layer covers at least two adjacent first electrodes.
8. The display panel according to claim 7, further comprising:
and the plurality of spacing columns are arranged at the joint of the two virtual rectangles at intervals and are positioned in the gap between the first sub-pixel and the second sub-pixel or the third sub-pixel in the second direction.
9. The display panel according to claim 1,
in the same pixel unit group, the second sub-pixels and the third sub-pixels of the two or more pixel units arranged along the first direction are arranged on the same straight line and are alternately arranged.
10. The display panel according to claim 9,
in the same pixel unit group, two adjacent pixel units arranged along the first direction are a first pixel unit and a second pixel unit;
wherein, in a first pixel unit of a first virtual rectangle, the second sub-pixel is positioned at a first top corner of the virtual rectangle; in a second pixel unit of the first virtual rectangle, the third sub-pixel is positioned at a second top corner of the virtual rectangle;
in a first pixel unit of a second virtual rectangle, the third sub-pixel is positioned at a first top corner of the virtual rectangle; in a second pixel unit of a second virtual rectangle, the second sub-pixel is located at a second top corner of the virtual rectangle.
11. The display panel according to claim 10,
two adjacent pixel unit groups arranged along the first direction, the joint of the two virtual rectangles forms a first boundary line, and one pixel unit group and the other pixel unit group are symmetrical about the first boundary line.
12. The display panel according to claim 10,
in the pixel structure, two or more pixel unit groups are adjacently arranged according to a second direction, and the second direction is vertical to the first direction;
and the joint of the two virtual rectangles forms a third boundary line, and one pixel unit group and the other pixel unit group are symmetrical about the third boundary line.
13. The display panel according to claim 10,
in the pixel structure, two or more pixel unit groups are adjacently arranged according to a second direction, and the second direction is vertical to the first direction; the second sub-pixel or the third sub-pixel belonging to two adjacent pixel unit groups are adjacently arranged;
the second sub-pixel comprises a first electrode, a second light-emitting layer and a second electrode which are sequentially stacked; the third sub-pixel comprises a first electrode, a third light-emitting layer and a second electrode which are sequentially stacked;
in the same pixel cell group, or, in two adjacent pixel cell groups,
the second light-emitting layer covers at least two adjacent first electrodes; the third light emitting layer covers at least two adjacent first electrodes.
14. The display panel according to claim 11, further comprising:
a plurality of spaced columns spaced apart at a midpoint of the first dividing line.
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| CN109994508A (en) * | 2018-01-02 | 2019-07-09 | 京东方科技集团股份有限公司 | A kind of pixel arrangement structure and relevant apparatus |
| CN112909060A (en) * | 2021-02-02 | 2021-06-04 | 武汉华星光电半导体显示技术有限公司 | Pixel structure and mask plate |
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