CN112133735B

CN112133735B - Display panel and display device

Info

Publication number: CN112133735B
Application number: CN202011061861.2A
Authority: CN
Inventors: 袁永; 郭林山
Original assignee: Xiamen Tianma Microelectronics Co Ltd
Current assignee: Xiamen Tianma Microelectronics Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2022-11-18
Anticipated expiration: 2040-09-30
Also published as: CN112133735A

Abstract

An embodiment of the present invention provides a display panel and a display device, where the display panel includes: the light emitting structure layer comprises a pixel electrode and a plurality of light emitting units arranged on one side of the pixel electrode, the plurality of light emitting units are distributed in an array mode along a first direction and a second direction, and the first direction is intersected with the second direction; the pixel electrode comprises an uneven area, the light-emitting unit comprises a first light-emitting unit, a second light-emitting unit and a third light-emitting unit, and along a first preset direction, a first luminous flux is formed by reflection of the uneven area of the pixel electrode corresponding to the first light-emitting unit, a second luminous flux is formed by reflection of the uneven area of the pixel electrode corresponding to the second light-emitting unit, and a third luminous flux is formed by reflection of the uneven area of the pixel electrode corresponding to the third light-emitting unit; wherein at least two of the first light flux, the second light flux and the third light flux are in a fixed ratio. The embodiment of the invention can improve color separation.

Description

Display panel and display device

Technical Field

The invention relates to the technical field of display equipment, in particular to a display panel and a display device.

Background

Organic Light-Emitting diodes (OLEDs) are active Light-Emitting devices. Compared with the traditional Liquid Crystal Display (LCD) Display mode, the OLED Display technology does not need a backlight lamp and has the self-luminous characteristic. The OLED adopts a thin organic material film layer and a glass substrate, and when a current flows, the organic material can emit light. The OLED display panel can thus significantly save electric power, can be made lighter and thinner, can withstand a wider range of temperature changes than the LCD display panel, and has a larger viewing angle. The OLED display panel is expected to become a next-generation flat panel display technology following the LCD, and is one of the technologies that receives the most attention among the flat panel display technologies at present.

The organic light emitting diode comprises an array substrate, a flattening layer and a light emitting structure layer, wherein the array substrate comprises a patterned metal layer, the different patterns on the metal layer lead to different thicknesses of the metal layer, so that a protrusion is formed on the surface of the flattening layer, the protrusion is formed on a pixel electrode on the flattening layer, and different sub-pixels of the light emitting structure layer are different in reflected light quantity corresponding to different protrusions and are prone to causing a color separation phenomenon.

Therefore, a new display panel and a new display device are needed.

Disclosure of Invention

The embodiment of the invention provides a display panel and a display device, and aims to solve the problem of color separation in the display panel.

An embodiment of a first aspect of the present invention provides a display panel, including: the light emitting structure layer comprises a pixel electrode and a plurality of light emitting units arranged on one side of the pixel electrode, the light emitting units are distributed in an array manner along a first direction and a second direction, and the first direction is intersected with the second direction; the pixel electrode comprises a non-flat area, the light-emitting unit comprises a first light-emitting unit, a second light-emitting unit and a third light-emitting unit, and along a first preset direction, the first light-emitting unit is reflected by the non-flat area of the pixel electrode corresponding to the first light-emitting unit to form first luminous flux, the second light-emitting unit is reflected by the non-flat area of the pixel electrode corresponding to the second light-emitting unit to form second luminous flux, and the third light-emitting unit is reflected by the non-flat area of the pixel electrode corresponding to the third light-emitting unit to form third luminous flux; wherein at least two of the first light flux, the second light flux and the third light flux are in a fixed ratio.

Embodiments of the second aspect of the present invention further provide a display device, including any one of the display panels of the first aspect.

In the display panel of the embodiment of the invention, the light emitting structure layer of the display panel comprises a pixel electrode and a light emitting unit arranged on one side of the pixel electrode. The pixel electrode is made of metal, so that the pixel electrode reflects light, and the quantity of light reflected by the non-flat area towards different directions is different. At least two of the first luminous flux, the second luminous flux and the third luminous flux are in a fixed proportion, so that color separation caused by unevenness of the pixel electrode can be improved, and the display effect of the display panel is improved.

Drawings

Other features, objects and advantages of the invention will become apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings in which like or similar reference characters refer to the same or similar parts.

FIG. 1 is a schematic plan view of a display panel in the prior art;

FIG. 2 isbase:Sub>A cross-sectional view taken at A-A of FIG. 1;

fig. 3 is a schematic plan view of a display panel according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken at B-B of FIG. 3;

FIG. 5 is a schematic view of a portion of the enlarged structure at I in FIG. 3;

fig. 6 is a schematic plan view illustrating a display panel according to another embodiment of the present invention;

FIG. 7 is a partial cross-sectional view at C-C of FIG. 6;

fig. 8 is a schematic plan view illustrating a pixel electrode of a display panel according to an embodiment of the invention;

fig. 9 is a schematic plan view of a pixel electrode of a display panel according to another embodiment of the invention.

Description of the reference numerals:

100. a light emitting structure layer; 110. a pixel electrode; 110a, non-flat areas; 101. a first side edge; 102. a second side edge; 103. a third side; 104. a fourth side; 111. a first pixel electrode; 112. a second pixel electrode; 113. a third pixel electrode; 114. a protrusion; 120. a light emitting unit; 120a, a light emitting unit group; 121. a first light emitting unit; 122. a second light emitting unit; 123. a third light emitting unit;

200. an array substrate; 201. a substrate; 210. a data metal line; 220. scanning the metal line; 230. a thin film transistor; 231. a gate metal layer; 232. a source drain electrode layer; 233. a capacitor metal layer;

300. and (7) a planarization layer.

Detailed Description

Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order to avoid unnecessarily obscuring the present invention; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, as used herein, refer to orientations or positional relationships and are used merely to facilitate description of the invention and to simplify the description, but do not indicate or imply that the device or element so referred to must be oriented, constructed, and operated in a particular orientation and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The directional terms used in the following description are intended to refer to directions shown in the drawings, and are not intended to limit the specific structure of embodiments of the present invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as either a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.

Referring to fig. 1 and fig. 2 together, fig. 1 is a schematic plan view illustrating a display panel in the prior art. Fig. 2 showsbase:Sub>A cross-sectional view atbase:Sub>A-base:Sub>A in fig. 1.

The display panel includes an array substrate 200', a planarization layer 300', and a light emitting structure layer 100', the array substrate 200' includes a substrate 201 'and a metal layer 202' disposed on the substrate 201', the metal layer 202' includes a driving unit, and the like, and thus a patterning process is required on the metal layer 202 'of the array substrate 200'. The different patterns on the metal layer 202 'result in inconsistent thickness of the metal layer 202'. When the planarization layer 300' is formed on the side of the metal layer 202' facing away from the substrate 201', the unevenness of the metal layer 202' may make the surface of the planarization layer 300' uneven. The light emitting structure layer 100 'includes a pixel electrode 110' and a light emitting unit 120', and the pixel electrode 110' is positioned between the planarization layer 300 'and the light emitting unit 120'. The unevenness formed on the surface of the planarization layer 300' may cause the protrusion 114' to be formed on the pixel electrode 110 '.

The pixel electrode 110 'reflects light emitted from the light emitting unit 120'. The paths of the light rays are shown in fig. 2 by open arrows. Different light emitting units 120' emit light of different colors, and if the arrangement positions of the protrusions 114' corresponding to the different light emitting units 120' or the shapes of the protrusions 114' are different, the amounts of the light of the different colors reflected by the protrusions 114' are different, which results in a color separation phenomenon.

The present invention is proposed to solve the above-mentioned technical problems. For better understanding of the present invention, the display panel and the display device according to the embodiment of the present invention are described in detail below with reference to fig. 3 to 9.

Referring to fig. 3 to 5, fig. 3 is a schematic plan view of a display panel according to an embodiment of the present invention. Fig. 4 is a cross-sectional view at B-B in fig. 3. Fig. 5 is a schematic view of a part of the enlarged structure at I in fig. 3. In order to more clearly show the structures of the various layers in the display panel, some of the structures are omitted from fig. 3 and 5.

According to the display panel provided by the embodiment of the invention, the display panel comprises: a light emitting structure layer 100 including a pixel electrode 110 and a plurality of light emitting cells 120 disposed at one side of the pixel electrode 110, the plurality of light emitting cells 120 being arranged in an array along a first direction (X direction in fig. 3) and a second direction (Y direction in fig. 3), the first direction and the second direction intersecting each other; the pixel electrode 110 includes a non-flat region 110a, the light emitting unit 120 includes a first light emitting unit 121, a second light emitting unit 122 and a third light emitting unit 123, and along a first preset direction, a first light flux is formed by being reflected by the non-flat region 110a of the pixel electrode 110 corresponding to the first light emitting unit 121, a second light flux is formed by being reflected by the non-flat region 110a of the pixel electrode 110 corresponding to the second light emitting unit 122, and a third light flux is formed by being reflected by the non-flat region 110a of the pixel electrode 110 corresponding to the third light emitting unit 123; wherein at least two of the first light flux, the second light flux and the third light flux are in a fixed ratio.

The first preset direction may be set in various ways, and the first preset direction may be a thickness direction of the display panel, or the first preset direction intersects with the thickness direction of the display panel. Optionally, the first preset direction is an emergent light direction of the display panel, that is, the user can see the display image along a direction opposite to the first preset direction when using the display panel.

In the display panel of the embodiment of the invention, the light emitting structure layer 100 of the display panel includes a pixel electrode 110 and a light emitting unit 120 disposed at one side of the pixel electrode 110. The material of the pixel electrode 110 includes metal, so the pixel electrode 110 reflects light, and the amount of light reflected by the non-flat area 110a in different directions is different. At least two of the first luminous flux, the second luminous flux and the third luminous flux are in a fixed ratio, so that color separation caused by unevenness of the pixel electrode 110 can be improved, and the display effect of the display panel can be improved.

Optionally, any two of the first luminous flux, the second luminous flux and the third luminous flux are in a fixed ratio, so that color separation can be further improved, and the display effect of the display panel is improved.

Optionally, the first light flux, the second light flux and the third light flux are equal. That is, the light quantity emitted by the light emitting units with different colors in the display panel along the first preset direction is equal, so that the color separation of the display panel can be further improved, and the display effect of the display panel is improved.

Optionally, an orthographic projection of the first light-emitting unit 121 on the pixel electrode 110 corresponding to the first light-emitting unit 121 is a first orthographic projection, an orthographic projection of the second light-emitting unit 122 on the pixel electrode corresponding to the second light-emitting unit 122 is a second orthographic projection, an orthographic projection of the third light-emitting unit 123 on the pixel electrode corresponding to the third light-emitting unit 123 is a third orthographic projection, the first orthographic projection, the second orthographic projection, and the third orthographic projection at least partially overlap the non-flat region, an area of the first orthographic projection overlapping the non-flat region is S1, an area of the second orthographic projection overlapping the non-flat region is S2, and an area of the third orthographic projection overlapping the non-flat region is S3; wherein, the first and the second end of the pipe are connected with each other,

and/or

By setting up

And/or

The difference between luminous fluxes formed by reflection of the non-flat areas of the pixel electrodes corresponding to different light-emitting units can be reduced; further, by being able to reduce the difference between the amounts of reflected light formed by the non-flat area 110a to at least two of the first light emitting unit 121, the second light emitting unit 122, and the third light emitting unit 123, color separation due to unevenness of the pixel electrode 110 can be improved, and the display effect of the display panel can be improved.

Optionally, an orthogonal projection of the first light-emitting unit 121 on the pixel electrode 110 corresponding to the first light-emitting unit 121 is a first orthogonal projection, an orthogonal projection of the second light-emitting unit 122 on the pixel electrode 110 corresponding to the second light-emitting unit 122 is a second orthogonal projection, and an orthogonal projection of the third light-emitting unit 123 on the pixel electrode 110 corresponding to the third light-emitting unit 123 is a third orthogonal projection; wherein the first orthographic projection, the second orthographic projection and the third orthographic projection are at least partially overlapped with the non-flat region 110a, and the overlapped area of at least two of the first orthographic projection, the second orthographic projection and the third orthographic projection is equal to that of the non-flat region 110a.

One pixel electrode 110 is shown in fig. 5, and the relative positional relationship of the pixel electrode 110 and the light emitting unit 120 is indicated by a dashed-line frame.

In these alternative embodiments, the first orthographic projection, the second orthographic projection and the third orthographic projection at least partially overlap the non-flat area 110a, that is, the non-flat area 110a reflects light emitted by the first light emitting unit 121, the second light emitting unit 122 and the third light emitting unit 123. At least two of the first, second, and third orthographic projections have the same overlapping area with the non-flat region 110a, a difference between amounts of reflected light formed by the non-flat region 110a to at least two of the first, second, and third

light emitting units

121, 122, and 123 can be reduced, color separation due to unevenness of the pixel electrode 110 can be improved, and a display effect of the display panel can be improved.

The non-flat region 110a refers to a region on the pixel electrode 110 that is not flat. The non-flat area 110a is caused by, for example, insufficient manufacturing process of the pixel electrode 110.

In other embodiments, the display panel further includes an array substrate 200 and a planarization layer 300, the planarization layer 300 is located on a side of the pixel electrode 110 facing away from the light emitting unit 120, and the array substrate 200 is located on a side of the planarization layer 300 facing away from the pixel electrode 110. The array substrate 200 includes a metal layer, and the metal layer is patterned to cause unevenness of the surface of the metal layer, thereby causing unevenness of the surface of the planarization layer 300. When the pixel electrode 110 is formed on the surface of the planarization layer 300 away from the array substrate 200, the unevenness of the surface of the planarization layer 300 may form a protrusion 114 on the pixel electrode 110 or cause uneven surface of the pixel electrode 110, thereby forming an uneven area 110a of the pixel electrode 110.

There are various ways of setting the emission colors of the first, second, and third

light emitting units

121, 122, and 123. The first light emitting unit 121 emits red light, the second light emitting unit 122 emits green light, and the third light emitting unit 123 emits blue light will be described as an example. In other alternative embodiments, the first light emitting unit 121 may further emit green or blue light, the second light emitting unit 122 may further emit red or blue light, and the third light emitting unit 123 may further emit red or green light.

The number of the first light emitting units 121, the second light emitting units 122, and the third light emitting units 123 is plural, each of the first light emitting units 121 has a pixel electrode 110 disposed correspondingly, each of the second light emitting units 122 has a pixel electrode 110 disposed correspondingly, and each of the third light emitting units 123 has a pixel electrode 110 disposed correspondingly. The at least two of the first orthographic projection, the second orthographic projection, and the third orthographic projection being equal to the overlapping area of the non-flat region 110a means that: at least two of an overlapping area S1 formed by the first orthographic projection formed by all the first light-emitting units 121 and the non-flat region 110a on each corresponding pixel electrode 110, an overlapping area S2 formed by the second orthographic projection formed by all the second light-emitting units 122 and the non-flat region 110a on each corresponding pixel electrode 110, and an overlapping area S3 formed by the third orthographic projection formed by all the third light-emitting units 123 and the non-flat region 110a on each corresponding pixel electrode 110 are equal.

Optionally, the overlapping areas of the first orthographic projection and the second orthographic projection and the non-flat region 110a are equal, that is, S1 is equal to S2. The difference between the amounts of reflected light formed by the uneven area 110a to the first and second

light emitting units

121 and 122 can be reduced, the difference in the total amount of light between the first and second

light emitting units

121 and 122 can be reduced, and the color separation between red and green light can be reduced.

Optionally, the overlapping areas of the first and third orthographic projections and the non-flat region 110a are equal, i.e., S1 is equal to S3. The difference between the amounts of reflected light formed by the non-flat region 110a to the first light-emitting unit 121 and the third light-emitting unit 123 can be reduced, the difference in the total amount of light between the first light-emitting unit 121 and the third light-emitting unit 123 can be reduced, and the color separation between red light and blue light can be weakened.

Optionally, the overlapping area of the second orthographic projection and the third orthographic projection with the non-flat region 110a is equal, that is, S2 is equal to S3. The difference between the amounts of light reflected by the non-flat region 110a by the second and third

light emitting units

122 and 123 can be reduced, the difference in the total amount of light between the second and third

light emitting units

122 and 123 can be reduced, and the color separation between green and blue light can be reduced.

Optionally, the first orthographic projection, the second orthographic projection and the third orthographic projection are equal to the overlapping area of the non-flat region 110a. I.e. S1 equals S2 equals S3. The difference between the amounts of light reflected by the non-flat region 110a with respect to three of the first light-emitting unit 121, the second light-emitting unit 122, and the third light-emitting unit 123 can be reduced, the difference between the total amounts of light among the first light-emitting unit 121, the second light-emitting unit 122, and the third light-emitting unit 123 can be reduced, and thus the color separation among the red light, the blue light, and the green light can be reduced. The display effect of the display panel is further improved.

Optionally, the array substrate 200 includes a plurality of driving units distributed in an array in the first direction and the second direction. The driving unit is used for driving the light emitting unit 120 to display through the pixel electrode 110. Each driving unit is provided corresponding to each pixel electrode 110 and each light emitting unit 120 in the thickness direction of the display panel.

The driving units are arranged in an array mode and are periodically arranged according to a preset arrangement pattern. The arrangement period of the driving unit may be greater than a pixel pitch (pixel pitch).

The driving unit includes driving modules, and in order to implement the functions of the driving modules, a metal layer in the driving unit is patterned, which results in uneven surface of the metal layer facing the pixel electrode 110.

In some embodiments, in a direction perpendicular to the display panel, the non-flat region 110a at least partially overlaps the driving unit, and an overlapping area of the non-flat region 110a of each pixel electrode 110 and the driving unit is equal.

In these alternative embodiments, the driving unit at least partially overlaps the non-flat area 110a, and thus unevenness of the surface of the driving unit may cause the protrusion 114 to appear in the non-flat area 110a. The overlapping area of the non-flat area 110a of each pixel electrode 110 and the driving unit is equal, so that the areas of the protrusions 114 formed on the pixel electrode 110 due to the unevenness of the driving unit tend to be consistent, the optical path and the light quantity of the reflected light formed by the non-flat area 110a to each light emitting unit 120 tend to be consistent, and the color separation is improved.

Alternatively, the non-flat region 110a of each pixel unit is the same as the overlapping position of the driving unit. The structures of the driving units are basically consistent, and the shapes of the uneven areas on the surfaces of the driving units are basically consistent. The non-flat area 110a of each pixel unit is identical to the overlapping position of the driving unit, so that the uneven shape of the pixel electrode 110 caused by the driving unit tends to be uniform, further improving color separation.

Referring to fig. 6 and 7 together, fig. 6 is a schematic structural diagram of a display panel according to another embodiment of the present invention. The distribution area of each signal line on the array substrate 200 is shown by a dotted line in fig. 6. Fig. 7 is a cross-sectional view at C-C in fig. 6.

The driving unit is provided in various ways, and includes, for example, a plurality of signal lines. The plurality of signal lines may include, for example, data metal lines 210 extending in the second direction and arranged in the first direction, and/or the plurality of signal lines may include, for example, scan metal lines 220 extending in the first direction and arranged in the second direction.

The metal layer is patterned to form the data line 210, and thus the surface of the data line 210 is not flat. The non-flat area 110a of each pixel electrode 110 has the same overlapping area with the data metal line 210, so that the distribution area of the protrusions 114 formed on the non-flat area 110a due to the unevenness of the data metal line 210 is the same. Optionally, the non-flat area 110a of each pixel electrode 110 is the same as the overlapping position of the data metal line 210, so that the uneven shape of the pixel electrode 110 caused by the data metal line 210 tends to be uniform, further improving the color separation.

The metal layer is patterned to form the scan metal line 220, so the surface of the scan metal line 220 is not flat. The non-flat area 110a of each pixel electrode 110 has the same overlapping area with the scan metal line 220, so that the distribution area of the protrusions 114 formed on the non-flat area 110a due to the unevenness of the scan metal line 220 is the same. Optionally, the non-flat area 110a of each pixel electrode 110 is the same as the overlapping position of the scanning metal line 220, so that the uneven shape of the pixel electrode 110 caused by the scanning metal line 220 tends to be uniform, further improving the color separation.

Optionally, the driving unit includes, for example, two data metal lines 210 arranged along a first direction and two scanning metal lines 220 arranged along a second direction, and the two data metal lines 210 and the two scanning metal lines 220 enclose to form a pixel region. The pixel electrode 110 and the light emitting unit 120 are correspondingly disposed in the pixel region.

Optionally, the driving unit further includes a thin film transistor 230, and the thin film transistor 230 may be a switching tube and/or a driving tube. The thin film transistor 230 may be a PNP type thin film transistor 230, or the thin film transistor 230 may be an NPN type thin film transistor 230.

The thin film transistor 230 includes a gate metal layer 231, a source-drain electrode layer 232, and a capacitance metal layer 233. The gate metal layer 231 is patterned to form a gate, and the surface of the gate metal layer 231 is not flat. The overlapping areas of the non-flat area 110a of each pixel electrode 110 and the gate metal layer 231 are equal, so that the distribution areas of the protrusions 114 formed on the non-flat area 110a due to the unevenness of the gate metal layer 231 are equal. Optionally, the non-flat area 110a of each pixel electrode 110 is overlapped with the gate metal layer 231 at the same position, so that the uneven shape of the pixel electrode 110 caused by the gate metal layer 231 tends to be uniform, and the color separation is further improved.

The source-drain electrode layer 232 is patterned to form source-drain electrodes, and the surface of the source-drain electrode layer 232 is uneven. The overlapping areas of the non-flat region 110a of each pixel electrode 110 and the source-drain electrode layer 232 are equal, so that the distribution areas of the protrusions 114 formed on the non-flat region 110a due to the unevenness of the source-drain electrode layer 232 are equal. Optionally, the overlapping positions of the non-flat region 110a of each pixel electrode 110 and the source-drain electrode layer 232 are the same, so that the uneven shape of the pixel electrode 110 caused by the source-drain electrode layer 232 tends to be uniform, and color separation is further improved.

Since the capacitor metal layer 233 is patterned to form a capacitor plate at a predetermined position, the surface of the capacitor metal layer 233 is not flat. The overlapping areas of the non-flat area 110a of each pixel electrode 110 and the capacitor metal layer 233 are equal, so that the distribution areas of the protrusions 114 formed on the non-flat area 110a due to the unevenness of the capacitor metal layer 233 are equal. Optionally, the overlapping positions of the non-flat area 110a of each pixel electrode 110 and the capacitor metal layer 233 are the same, so that the uneven shape of the pixel electrode 110 caused by the capacitor metal layer 233 tends to be uniform, further improving color separation.

Optionally, regardless of the relative position of the pixel electrode 110 and the lower driving unit, the difference between the numbers of the first light emitting unit 121, the second light emitting unit 122, and the third light emitting unit 123 corresponding to each pixel electrode 110 is less than or equal to the first difference threshold. That is, the numbers of the first light emitting unit 121, the second light emitting unit 122 and the third light emitting unit 123 are close to or the same, so as to avoid color separation caused by an excessive number of the light emitting units 120 of a certain color.

Referring to fig. 8, fig. 8 is a schematic structural diagram of a pixel electrode 110 of a display panel according to an embodiment of the invention.

In some alternative embodiments, the pixel electrode 110 includes a first pixel electrode 111 corresponding to the first light emitting unit 121, a second pixel electrode 112 corresponding to the second light emitting unit 122, and a third pixel electrode 113 corresponding to the third light emitting unit 123, and the total area of at least two of the first pixel electrode 111, the second pixel electrode 112, and the third pixel electrode 113 is the same.

In these alternative embodiments, the total areas of at least two of the first pixel electrode 111, the second pixel electrode 112, and the third pixel electrode 113 are the same, which can reduce the difference between the amounts of reflected light formed by the pixel electrode 110 on at least two of the first light emitting unit 121, the second light emitting unit 122, and the third light emitting unit 123, thereby improving the color separation between at least two of the first light emitting unit 121, the second light emitting unit 122, and the third light emitting unit 123.

In the above-described embodiment, the area of the first pixel electrode 111 may be an area of an orthogonal projection of the first pixel electrode 111 formed on the substrate 201. The area of the second pixel electrode 112 may be an area of an orthogonal projection of the second pixel electrode 112 formed on the substrate 201. The area of the third pixel electrode 113 may be an area of an orthogonal projection of the third pixel electrode 113 formed on the substrate 201.

For example, the total area of the first pixel electrode 111 and the second pixel electrode 112 is the same, and it is possible to reduce the difference between the amounts of reflected light formed by the pixel electrode 110 to both the first light emitting unit 121 and the second light emitting unit 122, thereby improving the color separation between red light and green light.

In other embodiments, the total area of the first pixel electrode 111 and the third pixel electrode 113 is the same, which can reduce the difference between the amounts of reflected light formed by the pixel electrode 110 to the first light emitting unit 121 and the third light emitting unit 123, thereby improving the color separation between the red light and the blue light.

In still other embodiments, the total area of the second pixel electrode 112 and the third pixel electrode 113 is the same, which can reduce the difference between the amounts of reflected light formed by the pixel electrode 110 to both the second light emitting unit 122 and the third light emitting unit 123, thereby improving the color separation between green light and blue light.

In some embodiments, the total areas of the first pixel electrode 111, the second pixel electrode 112, and the third pixel electrode 113 are the same, so that the difference between the amounts of light reflected by the pixel electrode 110 to the first light emitting unit 121, the second light emitting unit 122, and the third light emitting unit 123 can be reduced, and the color separation among the three of red light, green light, and blue light can be improved.

There are various ways to arrange the non-flat region 110a, in some alternative embodiments, the non-flat region 110a of the pixel electrode 110 is provided with a protrusion 114, the protrusion 114 is oriented toward the light emitting unit 120, and the position of the protrusion 114 on each pixel electrode 110 is the same.

In these alternative embodiments, the positions of the protrusions 114 on the pixel electrodes 110 are the same, so that the emission amount and the emission direction of the reflected light formed by the pixel electrodes 110 for the light-emitting units 120 tend to be consistent, and the color separation is further improved.

There are various arrangements of the same position of the protrusion 114 on each pixel electrode 110, for example, the pixel electrode 110 includes a first side 101 and a second side 102 oppositely arranged along a first direction, and the distance from the protrusion 114 on each pixel electrode 110 to the first side 101 and/or the second side 102 is equal.

Optionally, the pixel electrode 110 includes a third side 103 and a fourth side 104 oppositely disposed along the second direction, and the distance from the protrusion 114 on each pixel electrode 110 to the third side 103 and/or the fourth side 104 is equal.

Referring to fig. 8, in fig. 8, the distance from the protrusion 114 on each pixel electrode 110 to the first side 101 and the second side 102 is the same.

With continued reference to fig. 7, in some alternative embodiments, the protrusion heights of the protrusions 114 on the pixel electrodes 110 are the same. The distance between the protrusion 114 on each pixel electrode 110 and each light emitting unit 120 tends to be uniform, so that the difference between the optical paths of the reflected light formed by the pixel electrode 110 for each light emitting unit 120 can be reduced, and the color separation can be further improved.

The number of the protrusions 114 on each pixel electrode 110 may be various, and one or more protrusions 114 may be provided. When there is one protrusion 114 on the pixel electrode 110, the arrangement position and the protrusion height of the protrusion 114 on each pixel electrode 110 are the same, and the color separation can be improved better.

Referring to fig. 9, fig. 9 is a schematic structural diagram of a pixel electrode 110 of a display panel according to an embodiment of the invention.

When there are a plurality of protrusions 114, the distribution of the plurality of protrusions 114 on each pixel electrode 110 is the same. That is, the distribution structure of the plurality of protrusions 114 on each pixel electrode 110, and the distribution patterns formed by the plurality of protrusions 114 on the pixel electrode 110 are the same, so that the emission direction and the emission amount of the reflected light tend to be consistent, and the color separation is further improved.

In some embodiments, the light emitting structure layer 100 includes a plurality of light emitting cell groups 120a, the light emitting cell groups 120a include a first light emitting cell 121, a second light emitting cell 122, and a third light emitting cell 123, and orthographic projection areas of the first light emitting cell 121, the second light emitting cell 122, and the third light emitting cell 123 within the light emitting cell groups 120a are the same.

In these alternative embodiments, the forward projection areas of the first light-emitting unit 121, the second light-emitting unit 122, and the third light-emitting unit 123 in the light-emitting unit group 120a are the same, and the light quantities of the different colors of light emitted by the first light-emitting unit 121, the second light-emitting unit 122, and the third light-emitting unit 123 tend to be uniform. And the light quantities of the first light-emitting unit 121, the second light-emitting unit 122 and the third light-emitting unit 123 emitted to the pixel electrode 110 tend to be consistent, so that the difference between the reflected light quantities of the different colors of light can be reduced, and the color separation is further improved.

Optionally, the data metal lines 210 and the scan metal lines 220 of the plurality of driving units are connected to each other, so that the scan metal lines 220 in the same row are connected to one continuous scan metal line 220, and the data lines in the same column are connected to one continuous data metal line 210.

Optionally, the light emitting unit group 120a includes a plurality of first light emitting unit groups extending along the first direction and arranged along the second direction, and the areas of the first orthographic projection, the second orthographic projection and the third orthographic projection are the same on the same line along the first direction.

Optionally, the areas of the first orthographic projection, the second orthographic projection and the third orthographic projection are the same on the same line along the first direction. In the same row, the areas of the scanning metal lines 220 covered by the first orthographic projection, the second orthographic projection and the third orthographic projection are the same, and the overlapping areas of the first light-emitting unit 121, the second light-emitting unit 122 and the third light-emitting unit 123 and the same scanning metal line 220 are the same. The amount of light of different colors reflected by the scanning metal lines 220 tends to be uniform, further improving color separation.

Optionally, the light emitting unit group 120a includes a plurality of second light emitting unit groups extending along the second direction and arranged along the first direction, and the areas of the first orthographic projection, the second orthographic projection and the third orthographic projection are the same on the same column along the second direction.

In these alternative embodiments, the first, second and third orthographic projections have the same area on the same column along the second direction. In the same column, the areas of the data metal lines 210 covered by the first, second and third orthographic projections are the same, and the overlapping areas of the first, second and third light-emitting

units

121, 122 and 123 and the same data metal line 210 are the same. The amounts of light of different colors reflected by the data metal lines 210 tend to be uniform, further improving color separation.

The light emitting units 120 may be arranged in various ways, in some alternative embodiments, the light emitting units 120 are arranged in a first direction to form N rows, and are arranged in a second direction to form M columns, and the light emitting unit 120 in the (N + 1) th row is located between two adjacent light emitting units 120 in the nth row.

In these optional embodiments, the light emitting unit 120 in the (n + 1) th row is located between two adjacent light emitting units 120 in the nth row, that is, the two adjacent rows of light emitting units 120 are arranged in a staggered manner, so that the color rendering of the display panel is more uniform, and the stripe display phenomenon is improved.

Alternatively, the light emitting unit 120 of the (n + 1) th column is located between two adjacent light emitting units 120 in the nth column. That is, two adjacent columns of light emitting units 120 are arranged in a staggered manner, so that the color rendering of the display panel is more uniform, and the stripe display phenomenon is improved.

In some embodiments, the first light emitting unit 121, the second light emitting unit 122, and the third light emitting unit 123 in the same column are arranged in a group of translation repetitions; in the same row, the first light emitting unit 121, the second light emitting unit 122 and the third light emitting unit 123 in the even or odd columns are arranged in a group of translation and repetition.

The inventive concept of the present invention is illustrated by taking fig. 3 as an example, in fig. 3, the first light emitting unit 121, the second light emitting unit 122 and the third light emitting unit 123 in the same column are repeatedly arranged in a group of translation. For example, in the same group as a column, the number ratio of the first light emitting unit 121, the second light emitting unit 122, and the third light emitting unit 123 is 1. In the same group of the same column, there are a plurality of arrangement orders of the first light emitting unit 121, the second light emitting unit 122, and the third light emitting unit 123, for example, the first light emitting unit 121, the second light emitting unit 122, and the third light emitting unit 123 are arranged in sequence along the second direction, or the first light emitting unit 121, the third light emitting unit 123, and the second light emitting unit 122 are arranged in sequence along the second direction, or the second light emitting unit 122, the third light emitting unit 123, and the first light emitting unit 121 are arranged in sequence along the second direction, and so on.

In the same row, the first light emitting units 121, the second light emitting units 122, and the third light emitting units in even-numbered columns are repeatedly arranged in a group of translation. For example, the first light emitting unit 121 in the second column, the second light emitting unit 122 in the fourth column, and the third light emitting unit 123 in the sixth column are repeatedly arranged in a group in the even columns in a manner of being shifted in the first direction.

In the same row, the first light emitting units 121, the second light emitting units 122, and the third light emitting units in the odd-numbered columns are repeatedly arranged in a group of translation. For example, the first light emitting unit 121 of the first column, the second light emitting unit 122 of the third column, and the third light emitting unit 123 of the fifth column are repeatedly arranged in a group in the odd columns in a manner of being shifted in the first direction.

Embodiments of the second aspect of the present invention further provide a display device, including any one of the display panels of the first aspect. Since the display device according to the embodiment of the present invention includes the display panel, the display device according to the embodiment of the present invention includes the beneficial effects of the display panel, which are not described herein again.

The display device in the embodiment of the present invention includes, but is not limited to, a mobile phone, a Personal Digital Assistant (PDA), a tablet computer, an electronic book, a television, a door lock, a smart phone, a console, and other devices having a display function.

While the application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims

1. A display panel, comprising:

the light emitting structure layer comprises a plurality of light emitting units, the light emitting units comprise pixel electrodes, the light emitting units are distributed in an array along a first direction and a second direction, and the first direction and the second direction intersect;

the pixel electrode comprises a non-flat area, the light-emitting unit comprises a first light-emitting unit, a second light-emitting unit and a third light-emitting unit, and along a first preset direction, a first luminous flux is formed by reflection of the non-flat area of the pixel electrode corresponding to the first light-emitting unit, a second luminous flux is formed by reflection of the non-flat area of the pixel electrode corresponding to the second light-emitting unit, and a third luminous flux is formed by reflection of the non-flat area of the pixel electrode corresponding to the third light-emitting unit;

wherein at least two of the first light flux, the second light flux and the third light flux are in a fixed ratio,

the orthographic projection of the first light-emitting unit on the corresponding pixel electrode is a first orthographic projection, the orthographic projection of the second light-emitting unit on the corresponding pixel electrode is a second orthographic projection, the orthographic projection of the third light-emitting unit on the corresponding pixel electrode is a third orthographic projection, and the first orthographic projection, the second orthographic projection and the third orthographic projection are at least partially overlapped with the non-flat area,

and the first orthographic projection has an overlapping area S1 with the non-flat region, the second orthographic projection has an overlapping area S2 with the non-flat region, the third orthographic projection has an overlapping area S3 with the non-flat region,

wherein the content of the first and second substances,

and/or

2. The display panel according to claim 1, wherein any two of the first light flux, the second light flux, and the third light flux are in a fixed ratio.

3. The display panel according to claim 2, wherein the first light flux, the second light flux, and the third light flux are equal.

4. The display panel according to claim 1,

at least two of the first orthographic projection, the second orthographic projection and the third orthographic projection have equal overlapping areas with the non-flat region.

5. The display panel according to claim 4, wherein the first orthographic projection, the second orthographic projection, and the third orthographic projection have an equal overlapping area with the non-flat region.

6. The display panel according to claim 1, wherein the light emitting structure layer comprises a plurality of light emitting unit groups, each of the light emitting unit groups comprises the first light emitting unit, the second light emitting unit and the third light emitting unit, and forward projection areas of the first light emitting unit, the second light emitting unit and the third light emitting unit in the light emitting unit groups are the same.

7. The display panel according to claim 6,

the light emitting unit group comprises a plurality of first light emitting unit groups which extend along the first direction and are arranged along the second direction, and the areas of the first orthographic projection, the second orthographic projection and the third orthographic projection are the same on the same line along the first direction;

and/or the light emitting unit group comprises a plurality of second light emitting unit groups which extend along the second direction and are arranged along the first direction, and the areas of the first orthographic projection, the second orthographic projection and the third orthographic projection are the same on the same column along the second direction.

8. The display panel according to claim 1, characterized in that the display panel further comprises: the array substrate is arranged on one side, away from the light emitting unit, of the pixel electrode and comprises a plurality of driving units which are distributed in an array mode in the first direction and the second direction, the non-flat area is at least partially overlapped with the driving units in the direction perpendicular to the display panel, and the overlapped area of the non-flat area of each pixel electrode and the driving units is equal.

9. The display panel according to claim 8, wherein the driving unit comprises a plurality of signal lines including data metal lines extending in the second direction and arranged in the first direction, and/or wherein the signal lines include scan metal lines extending in the first direction and arranged in the second direction.

10. The display panel according to claim 8, wherein the driving unit comprises a thin film transistor including a gate metal layer, a source drain electrode layer, and a capacitance metal layer.

11. The display panel according to claim 1, wherein the pixel electrode includes a first pixel electrode corresponding to the first light emitting unit, a second pixel electrode corresponding to the second light emitting unit, and a third pixel electrode corresponding to the third light emitting unit, and a total area of at least two of the first pixel electrode, the second pixel electrode, and the third pixel electrode is the same.

12. The display panel according to claim 1, wherein the non-flat region of the pixel electrode is provided with a projection, the projection being directed toward the light emitting unit;

the positions of the bulges on the pixel electrodes are the same;

and/or the protruding heights of the protrusions on each pixel electrode are the same.

13. The display panel according to claim 12, wherein the protrusions are distributed in the same manner on each of the pixel electrodes.

14. The display panel according to claim 1, wherein the plurality of light emitting cells are arranged in the first direction to form N rows and arranged in the second direction to form M columns,

the light emitting unit of the n +1 th row is positioned between two adjacent light emitting units in the n-th row;

and/or the light emitting unit of the (n + 1) th column is positioned between two adjacent light emitting units in the nth column.

15. The display panel according to claim 14,

in the same column, the first light-emitting unit, the second light-emitting unit and the third light-emitting unit are arranged in a group of translation and repetition;

in the same row, the first light-emitting units, the second light-emitting units and the third light-emitting units in even or odd columns are in a group of translation repeated arrangement.

16. A display device characterized by comprising the display panel according to any one of claims 1 to 15.