CN109728045B

CN109728045B - Display panel and display terminal

Info

Publication number: CN109728045B
Application number: CN201811643247.XA
Authority: CN
Inventors: 安乐平; 李胜坤; 王玲玲; 刘宏俊
Original assignee: Kunshan Visionox Technology Co Ltd
Current assignee: Suzhou Qingyue Optoelectronics Technology Co Ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2020-08-25
Anticipated expiration: 2038-12-29
Also published as: CN109728045A

Abstract

The invention relates to a display panel and a display terminal, wherein the display panel is characterized in that first electrode layers on a substrate are arranged into first electrodes which are arranged in an array and are mutually independent, and pixels arranged in the array are formed on the first electrodes arranged in the array. The pixels in each row or each column are divided into a first pixel group and a second pixel group, the first electrodes corresponding to the pixels in the first pixel group are connected through first routing wires, and the first electrodes corresponding to the pixels in the second pixel group are connected through second routing wires, so that multi-row scanning driving of the PMOLED display panel can be displayed, the resolution of the PMOLED display panel is improved, and the market limit of the PMOLED display panel is broken.

Description

Display panel and display terminal

Technical Field

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

Background

An Organic Light-Emitting Diode (OLED) display panel, also called an Organic electroluminescent display panel, is a new flat display device, and has the advantages of simple manufacturing process, low cost, low power consumption, high brightness, thin and Light volume, fast response speed, easy realization of color display and large-screen display, easy realization of flexible display, and the like, thereby having a wide application prospect.

The driving control circuit is an essential important component of the organic light emitting diode, and the performance of the driving control circuit is directly related to the performance of the display screen. The Driving mode of the OLED display panel mainly includes a Passive Driving (Passive Matrix Driving) mode and an Active Driving (Active Matrix Driving) mode, the Passive Driving OLED becomes a PM-OLED, and the Active Driving OLED becomes an AM-OLED.

In the traditional technology, the PMOLED driving mode adopts progressive time-sharing scanning driving, and the technical problem that the resolution of a PMOLED display screen is not high exists.

Disclosure of Invention

In view of this, it is necessary to provide a display panel and a display terminal for solving the technical problem of low resolution of the PMOLED display screen in the conventional technology.

A display panel, comprising:

a substrate;

the first electrode layer is arranged on the substrate and comprises first electrodes arranged in an array;

the pixel limiting layer is arranged on the first electrode layer, is provided with pixel openings which are arranged in an array mode and corresponds to the first electrodes one by one, a light emitting structure layer is arranged in each pixel opening to form a plurality of pixels, and each row or each column of the pixels comprises a first pixel group and a second pixel group;

the wiring group comprises a first wiring and a second wiring, the first electrodes corresponding to the pixels in the first pixel group are respectively connected to the first wiring, and the first electrodes corresponding to the pixels in the second pixel group are respectively connected to the second wiring;

and the second electrode layer is arranged above the light emitting structure layer and comprises a plurality of second electrodes arranged along the first direction or the second direction.

According to the display panel, the first electrode layers on the substrate are arranged into the first electrodes which are arranged in an array and are mutually independent, and the first electrodes arranged in the array form the pixels arranged in the array. The pixels in each row or each column are divided into a first pixel group and a second pixel group, the first electrodes corresponding to the pixels in the first pixel group are connected through first routing wires, and the first electrodes corresponding to the pixels in the second pixel group are connected through second routing wires, so that multi-row scanning driving of the PMOLED display panel can be displayed, the resolution of the PMOLED display panel is improved, and the market limit of the PMOLED display panel is broken.

In one embodiment, the display panel further includes:

the first metal routing corresponds to the first routing and is positioned above the first routing, and the projection of the first metal routing and the first routing on the substrate are superposed;

and the second metal routing corresponds to the second routing and is positioned above the second routing, and the projection of the second metal routing and the second routing on the substrate are superposed.

In one embodiment, the first trace, the second trace and the first electrode are disposed at the same layer; the first routing lines and the second routing lines are parallel to each other and are respectively positioned on two sides of each row or each column of the pixels.

In one embodiment, the display panel further includes an isolation pillar located between the pixel defining layer and the second electrode layer, and the second electrode layer is separated by the isolation pillar to form a plurality of second electrodes.

In one embodiment, the substrate has a display area and a non-display area, and the display panel further includes at least one scan driving unit located in the non-display area; the scanning driving unit is connected with the second electrodes and provides scanning driving signals for each second electrode.

In one embodiment, the plurality of second electrodes are divided into a plurality of second electrode groups, each second electrode group comprises at least two second electrodes, and each row or each column of pixels corresponding to each second electrode of the second electrode group respectively belong to different pixel groups;

the outgoing lines corresponding to each second electrode of the second electrode group are mutually connected and connected to the scanning driving unit, and the scanning driving unit simultaneously provides scanning driving signals for each second electrode of the second electrode group.

In one embodiment, the display panel further includes at least one data driving unit located in the non-display area; the data driving unit is connected with the first electrodes through the first wires and the second wires and provides data driving signals for each first electrode.

In one embodiment, each row or each column of the pixels includes at least two sets of the first pixel sets and at least one set of the second pixel sets.

In one embodiment, the pixels in the first pixel group are arranged adjacent to or separated by at least one pixel; the pixels in the second pixel group are disposed adjacent to or spaced apart by at least one pixel.

A display terminal comprises the display panel in any embodiment.

Drawings

Fig. 1a to 1b are schematic partial structural views of a display panel according to an embodiment of the present application;

FIGS. 1c to 1d are schematic views of a part of a first electrode in one embodiment of the present application;

FIG. 1e is a schematic diagram illustrating a partial structure of a display panel according to an embodiment of the present application;

FIGS. 1f to 1h are schematic partial cross-sectional views of a display panel according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a portion of a first electrode layout according to an embodiment of the present application;

FIG. 3a is a schematic diagram illustrating a partial structure of a display panel according to an embodiment of the present application;

FIG. 3b to FIG. 3e are schematic partial cross-sectional views of a display panel according to an embodiment of the present application;

FIG. 4 is a schematic partial cross-sectional view of a display panel according to an embodiment of the present application;

FIG. 5 is a schematic view of a portion of a first electrode layout according to an embodiment of the present application;

fig. 6a to 6d are schematic partial structural views of a display panel according to an embodiment of the present application;

fig. 7 is a schematic view of a partial structure of a display panel according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner" and "outer" etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, when an element is referred to as being "formed on" another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present.

In the conventional art, the PMOLED panel includes a plurality of cathodes, a light emitting layer, a plurality of anodes, and an external circuit, the anodes and the cathodes being perpendicular to each other. The intersection of the cathode and anode forms the light emitting layer. An external circuit provides a driving voltage to the selected cathode and anode. Therefore, the PMOLED display panel has a simple structure, drives the visual current to determine the gray scale, the resolution and the image quality performance, is mostly single-color and multi-color products, and is applied to small-size products. The manufacturing cost and the technical threshold of the PMOLED are lower. As described in the background art, the conventional PMOLED driving method adopts the progressive time-sharing scanning driving, and the resolution cannot be improved due to the driving method, so that the product is limited to the market with low resolution and small size.

In view of the above problems, the skilled person proposes to adopt a driving method of multi-line scanning for the PMOLED display panel, that is, the same scanning driving signal is applied to at least two cathodes simultaneously, that is, at least two rows of pixels are driven simultaneously. In order to ensure the normal display of the PMOLED display panel in the multi-line scanning driving mode, a skilled person creatively proposes a display panel comprising: a substrate; the first electrode layer is arranged on the substrate and comprises first electrodes arranged in an array; the pixel limiting layer is arranged on the first electrode layer and provided with pixel openings arranged in an array mode, light emitting structure layers are arranged in the pixel openings to form a plurality of pixels, the pixels are respectively in one-to-one correspondence with the first electrodes, and each row or column of pixels comprises a first pixel group and a second pixel group; the wiring group comprises a first wiring and a second wiring, the first electrodes corresponding to all pixels in the first pixel group are respectively connected to the first wiring, and the first electrodes corresponding to all pixels in the second pixel group are respectively connected to the second wiring; and the second electrode layer is arranged above the light emitting structure layer and comprises a plurality of second electrodes arranged along the first direction or the second direction. The first electrode layer on the substrate is set to be the first electrodes which are arranged in an array and are mutually independent, and the first electrodes arranged in the array form the pixels arranged in the array. Each row or each column of pixels is divided into a first pixel group and a second pixel group, the first electrodes corresponding to all pixels in the first pixel group are connected through first routing wires, and the first electrodes corresponding to all pixels in the second pixel group are connected through second routing wires, so that multi-row scanning driving of the PMOLED display panel can be displayed, the resolution of the PMOLED display panel is improved, and further the market limit of the PMOLED display panel is broken.

In an embodiment, referring to fig. 1a, the display panel includes a substrate 110 and a first electrode layer 120 disposed on the substrate 110, wherein the first electrode layer 120 includes first electrodes 121 arranged in an array. Referring to fig. 1b, the display panel further includes a pixel defining layer 130 disposed on the first electrode layer 120, the pixel defining layer 130 has pixel openings 131 arranged in an array, the pixel openings 131 are used for exposing the corresponding first electrodes 121, and a light emitting structure layer is disposed in the pixel openings 131 to form a plurality of pixels. The plurality of pixels respectively correspond to the first electrodes 121 one by one, and each row or column of pixels includes a first pixel group and a second pixel group.

For an example of dividing each row of pixels into a first pixel group and a second pixel group, please refer to fig. 1c and fig. 1d, the first electrodes 121 corresponding to each pixel in the first pixel group are respectively connected to the first wire 150, the first electrodes 121 corresponding to each pixel in the second pixel group are respectively connected to the second wire 160, and the first wire 150 and the second wire 160 form a wire group. And a second electrode layer 170 disposed over the light emitting structure layer, wherein the second electrode layer 170 includes a plurality of second electrodes 171 disposed along the first direction or the second direction. Referring to fig. 1e, a plurality of second electrodes 171 are disposed along the second direction. It should be noted that the first direction and the second direction intersect with each other, and the first direction and the second direction may also be perpendicular to each other, for example, the first direction may be a horizontal direction, and the second direction is a vertical direction. The first direction may be a vertical direction and the second direction is a horizontal direction.

Specifically, the substrate 110 may be a rigid substrate, such as a transparent substrate like a glass substrate, a quartz substrate, or a plastic substrate; the substrate 110 may also be a flexible substrate, such as a PI film. Referring to FIG. 1f, FIG. 1f is a schematic cross-sectional view along the direction AA' in FIG. 1 e. The display panel includes a substrate 110, a first electrode layer 120 is formed on the substrate 110, and the first electrode layer 120 is configured as a first electrode 121 arranged in an array by a patterning process. A pixel defining layer 130 is formed on the first electrode layer 120, and a material of the pixel defining layer 130 may include, but is not limited to, an organic material such as benzocyclobutene (BCB), Polyimide (PI), Polyamide (PA), acrylic resin, or phenol resin. Pixel openings 131 arranged in an array are formed on the pixel defining layer 130 through a patterning process such that the pixel openings 131 expose the corresponding first electrodes 121. Referring to fig. 1g, a light emitting structure layer 140 is disposed in the pixel opening 131 to form a plurality of pixels. Referring to fig. 1h, a second electrode 171 is formed on the light emitting structure layer 140. A mask corresponding to the plurality of second electrodes 171 may be used to block the second electrode layer 170, and form a plurality of second electrodes 171 that are insulated from each other.

Specifically, the first electrode 121 may be used as a transparent electrode or a reflective electrode according to a light emitting type of the display panel, such as a top emission type or a bottom emission type. When the first electrode 121 is used as a transparent electrode, the first electrode 121 may be formed using a transparent conductive material that may have a relatively large work function, such as Indium Tin Oxide (ITO), Zinc Tin Oxide (ZTO), Indium Zinc Oxide (IZO), zinc oxide (ZnOx), tin oxide (SnOx), Gallium Indium Zinc Oxide (GIZO), aluminum-doped zinc oxide (AZO), and the like. These may be used alone or in combination thereof. When the first electrode 121 serves as a reflective electrode, the first electrode 121 may be formed using a metal, for example, silver (Ag), aluminum (Al), platinum (Pt), gold (Au), chromium (Cr), tungsten (W), molybdenum (Mo), titanium (Ti), palladium (Pd), or the like, or an alloy of these metals. The second electrode 171 may be used as a transparent electrode or a reflective electrode according to the type of the display panel. When the display panel is a top emission type, the second electrode 171 is a transparent electrode. When the display panel is a bottom emission type, the second electrode 171 is a reflective electrode. The material of the second electrode 171 is similar to that of the first electrode 121, and is not described in detail here. It is to be understood that, in the present application, the first electrode 121 is an anode and the second electrode 171 is a cathode.

Specifically, the light emitting structure layer 140 further includes a first layer group injecting first carriers, a light emitting layer formed on the first layer group, and a second layer group injecting second carriers formed on the light emitting layer. The first layer group may include a first carrier injection layer, a first carrier transport layer, and a second carrier blocking layer. It is understood that when the first carriers are holes, the second carriers are electrons; when the first carriers are electrons, the second carriers are holes. The light emitting layer refers to an electron and a hole which are recombined to form an exciton when the display panel is driven, thereby generating light emission. The second group of layers may include a second carrier injection layer, may further include a second carrier transport layer, and may also include a first carrier blocking layer. This is well known to those skilled in the art and will not be described in detail here.

In this embodiment, the first electrode layer on the substrate is set as the first electrodes which are arranged in an array and are independent of each other, and the first electrodes arranged in an array form the pixels arranged in an array. The method comprises the steps of dividing each row or each column of pixels into a first pixel group and a second pixel group, connecting first electrodes corresponding to all pixels in the first pixel group through a first routing wire, and connecting first electrodes corresponding to all pixels in the second pixel group through a second routing wire, so that two rows of scanning driving of the PMOLED display panel can be displayed, driving two rows of pixels simultaneously through the same scanning driving signal, controlling a data signal to be applied to the first electrodes, and achieving light emitting of the pixels. The number of pixel rows driven by the wiring mode of the first electrodes which are arranged in an array and are independent of each other in the application is twice that of the pixel rows of the traditional technology, namely, two rows of pixels are driven by the same scanning driving signal, so that the resolution ratio of the PMOLED display panel is improved, and the market limitation of the PMOLED display panel is broken. In addition, the visual brightness of the display panel is related to the pixel light-emitting time, and the pixel light-emitting time can be relatively prolonged by a driving mode of multi-line scanning, so that the visual brightness can be improved, and the user experience is improved. On the other hand, on the premise of keeping the same visual brightness, the pixel light-emitting time can be relatively shortened by a driving mode of multi-line scanning, so that the power consumption is reduced.

In one embodiment, referring to fig. 2, the first trace 150 and the second trace 160 are parallel to each other. In order to save the process steps, the first trace 150, the second trace 160 and the first electrode 121 are disposed at the same layer. In order to realize the uniform distribution of the pixels, when the first routing, the second routing and the first electrode are arranged on the same layer, the first routing and the second routing are respectively positioned at two sides of each row or each column of pixels, so that the reasonable layout of the first routing and the second routing is realized.

In one embodiment, referring to fig. 3a, the display panel further includes a first metal trace 310 corresponding to the first trace (not shown) and located above the first trace. A second metal trace 320 corresponding to the second trace (not shown) is located above the second trace. When part of light irradiates on the first metal wire 310 and the second metal wire 320, due to the reflection effect of the first metal wire 310 and the second metal wire 320, the propagation path of the light is changed, the light is favorably transmitted, the light-emitting rate is improved, and the brightness of the display screen is improved. The first and second metal traces 310 and 320 may be formed using, for example, silver (Ag), aluminum (Al), platinum (Pt), gold (Au), chromium (Cr), tungsten (W), molybdenum (Mo), titanium (Ti), palladium (Pd), or the like, or an alloy of these metals.

In one embodiment, the first metal trace 310 coincides with a projection of the first trace on the substrate. The second metal trace 320 coincides with the projection of the second trace on the substrate. Specifically, please refer to fig. 3b and fig. 3c, fig. 3b is a schematic cross-sectional view along the direction BB' in fig. 3 a; fig. 3c is a schematic cross-sectional view along the direction CC' in fig. 3 a. The display panel further includes a first metal trace 310 corresponding to the first trace 150 and a second metal trace 320 corresponding to the second trace 160. The first metal trace 310 is located above the first trace 150. The second metal trace 320 is located above the second trace 160.

The first electrode layer 120 is formed on the substrate 110. Through a patterning process, the first electrode 121, the first trace 150 and the second trace 160 are formed in an array arrangement at the same time, and the first trace 150 and the second trace 160 are arranged in parallel. Referring to fig. 3c, the first trace 150 is connected to the first electrode 121a corresponding to each pixel in the first pixel group; referring to fig. 3b, the second trace 160 is connected to the first electrode 121b corresponding to each pixel in the second pixel group. Next, a first metal trace 310 is formed over the first trace 150, and a second metal trace 320 is formed over the second trace 160. Then, a pixel defining layer 130 is formed, and referring to fig. 3d and fig. 3e, pixel openings 131 arranged in an array are formed on the pixel defining layer 130 through a patterning process, so that the pixel openings 131 expose the corresponding first electrodes 121. In this embodiment, the first metal wire 310 and the second metal wire 320 are formed on the first wire 150 and the second wire 160, respectively, and the first metal wire 310 and the second metal wire 320 are used to reflect light, so as to change the propagation path of the light, improve the light-emitting efficiency, and improve the display quality of the PMOLED.

In one embodiment, referring to fig. 4, the display panel further includes an isolation pillar 410 located between the pixel defining layer 130 and the second electrode layer 170, and the second electrode layer 170 is isolated by the isolation pillar 410 to form a plurality of second electrodes 171. Specifically, the second electrode layer 170 is located on the isolation pillar 510 and the light emitting structure layer 140. The isolation pillars 410 are patterned by exposure, and in order to improve process accuracy, the isolation pillars 410 may be made of a negative photosensitive organic material. Further, the isolation pillar 410 may adopt an inverted trapezoid shape, when the second electrode layer 170 is formed, the side of the inverted trapezoid shape extends inward, the isolation pillar 410 of the inverted trapezoid shape may isolate the second electrode layer 170, and a part of the conductive layer 172 is formed on the isolation pillar 510, so that a short circuit between the second electrodes 171 may be avoided, and the PMOLED display panel may work normally.

In one embodiment, each row or column of pixels includes at least two first groups of pixels and at least one second group of pixels. The wire group comprises at least two first wires and at least one second wire. The first electrodes corresponding to the pixels in each first pixel group are respectively connected to the corresponding first wires, and the first electrodes corresponding to the pixels in each second pixel group are respectively connected to the corresponding second wires.

For example, each row of pixels is divided into two groups, i.e., a first pixel group and a second pixel group, please refer to fig. 5, and each row of pixels includes a first pixel group, a second pixel group, and a first pixel group. Each pixel of the first pixel group of the first group corresponds to the first electrode 121c, each pixel of the first pixel group of the second group corresponds to the first electrode 121d, and each pixel of the second pixel group corresponds to the first electrode 121 e. The first electrodes 121c corresponding to the first pixel group of the first group are connected to the first trace 150a, the first electrodes 121d corresponding to the second pixel group of the first group are connected to the first trace 150b, and the first electrodes 121e corresponding to the second pixel group are connected to the second trace 160.

In one embodiment, the pixels in the first pixel group are disposed adjacent to or separated by at least one pixel; the pixels in the second pixel group are disposed adjacent to or spaced apart by at least one pixel. Specifically, each row or each column of pixels is divided into a plurality of pixel groups, each pixel in each pixel group may be adjacent, and each pixel in each pixel group may also be separated by at least one pixel.

In the implementation, each row or each column of pixels is divided into a plurality of pixel groups according to actual requirements, the first electrode corresponding to each pixel in each pixel group is connected to the same walking line, the display problem of the PMOLED display panel driven by multi-row scanning is solved, a foundation is laid for realizing the multi-row scanning driving of the PMOLED display panel, the resolution of the PMOLED display panel is improved, and the market limitation of the PMOLED display panel is broken.

In one embodiment, referring to fig. 6a, the substrate has a display area and a non-display area 610 adjacent to each other, and the display panel further includes at least one scan driving unit 620 located in the non-display area 610. The scan driving unit 620 is connected to the second electrodes 171 and supplies a scan driving signal to each of the second electrodes 171. Wherein a light emitting structure layer is disposed at the crossing position of the first electrode 121 and the second electrode 171, and the scan driving unit 620 sequentially applies a scan driving signal to the light emitting structure layer to make the pixels emit light.

In one embodiment, the plurality of second electrodes are divided into a plurality of second electrode groups, each second electrode group includes at least two second electrodes, and each row or each column of pixels corresponding to each second electrode of the second electrode group respectively belong to different pixel groups. The leading-out wires corresponding to each second electrode of the second electrode group are mutually connected and connected to the scanning driving unit, and the scanning driving unit simultaneously provides scanning driving signals for each second electrode of the second electrode group.

For example, the second electrode group includes two adjacent second electrodes 171, and referring to fig. 6b, the

second electrodes

171a and 171b may form a second electrode group, and the respective lead lines 630 of the

second electrodes

171a and 171b are electrically connected together and connected to the scan driving unit 620. The second electrode 171c and the second electrode 171d may constitute a second electrode group, and the respective lead lines 630 of the second electrode 171c and the second electrode 171d are electrically connected together and to the scan driving unit 620. The second electrode 171e and the second electrode 171f may constitute one second electrode group. The respective lead-out lines 630 of the second electrode 171e and the second electrode 171f are electrically connected together and to the scan driving unit 620.

Illustratively, the second electrode group includes two spaced second electrodes 171, see fig. 6c, and the two spaced second electrodes 171 are spaced by one row of pixels. The second electrode 171a and the second electrode 171c may constitute a second electrode group, and the respective lead lines 630 of the second electrode 171a and the second electrode 171c are electrically connected together and to the scan driving unit 620. The second electrode 171b and the second electrode 171d may constitute a second electrode group, and the respective lead lines 630 of the second electrode 171b and the second electrode 171d are electrically connected together and to the scan driving unit 620. The second electrode 171e and the second electrode 171g (not shown) may constitute one second electrode group. The respective lead-out lines 630 of the second electrode 171e and the second electrode 171g are electrically connected together and to the scan driving unit 620. It is understood that the second electrode group may further include two spaced second electrodes 171, and the two spaced second electrodes 171 may be spaced by two rows of pixels. That is, the two spaced second electrodes 171 are spaced apart by at least one row of pixels, and the respective outgoing lines 630 of the two spaced second electrodes 171 are electrically connected to the scan driving unit 620, which is not described herein again.

For example, the second electrode group includes three second electrodes 171, referring to fig. 6d, the

second electrodes

171a, 171b, and 171c may form one second electrode group, and the respective lead lines 630 of the

second electrodes

171a, 171b, and 171c are electrically connected together and connected to the scan driving unit 620. The second electrode 171d, the second electrode 171e, and the second electrode 171f may form a second electrode group, and the respective lead lines 630 of the second electrode 171d, the second electrode 171e, and the second electrode 171f are electrically connected together and connected to the scan driving unit 620.

It should be noted that, the above is only an exemplary description, the number of the second electrodes 171 of the second electrode group is not limited in this application, the second electrode group may further include four second electrodes 171, and the specific number may be set according to actual situations. In addition, whether the second electrode group includes two second electrodes 171 or the second electrode group includes three second electrodes 171, the positional relationship between the second electrodes 171 is also flexible, and the two second electrodes 171 may be adjacent or spaced apart. The three second electrodes 171 may be adjacent or spaced apart, and may be specifically disposed according to practical situations, which is not limited in this application.

It is understood that when the second electrode group includes two second electrodes 171, each row or each column of pixels is divided into two pixel groups, and the trace group includes two traces. When the second electrode group includes three second electrodes 171, each row or each column of pixels is divided into three pixel groups, and the trace group includes three traces. When the second electrode group includes four second electrodes 171, each row or each column of pixels is divided into four pixel groups, and the routing group includes four routing lines. That is, the wiring scheme of the corresponding first electrode may be determined according to the number of the second electrodes 171 of the second electrode group.

In this embodiment, the plurality of second electrodes are divided into a plurality of second electrode groups according to actual requirements, each second electrode group includes at least two second electrodes, and the first outgoing lines corresponding to each second electrode of the second electrode group are electrically connected and connected to the scan driving unit. Therefore, multi-row scanning driving of the PMOLED display screen is achieved, and the resolution of the PMOLED display screen can be improved. Further expanding the application field of the PMOLED display screen and promoting the overall development of the PMOLED display screen.

In one embodiment, referring to fig. 7, the display panel further includes at least one data driving unit 710 located in the non-display area 610. The data driving unit 710 is connected to the first electrodes 121 through the first wire 150 and the second wire 160, and provides a data driving signal to each of the first electrodes 121.

The data driving unit 710 applies a data voltage to a corresponding pixel in the first pixel group through the first trace 150 and the first electrode 121. The data driving unit 710 applies a data voltage to the corresponding pixel in the second pixel group through the second trace 160 and the first electrode 121. The scan driving unit sequentially applies scan driving signals to corresponding pixels, which generate light having a predetermined brightness to display an image.

In one embodiment, the present application provides a display terminal comprising a display panel as in the above embodiments.

In addition, the terms "first", "second", and the like used in the embodiments of the present application may be used herein to describe various elements, but the elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first electrode layer may be referred to as a second electrode layer, and similarly, a second electrode layer may be referred to as a first electrode layer, without departing from the scope of the present application. The first electrode layer and the second electrode layer are both electrode layers, but they are not the same electrode layer.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A display panel, comprising:

a substrate;

a second electrode layer disposed over the light emitting structure layer, the second electrode layer including a plurality of second electrodes disposed along a first direction or a second direction;

the display panel further comprises an isolation column located between the pixel limiting layer and the second electrode layer, and the second electrode layer is isolated by the isolation column to form a plurality of second electrodes.

2. The display panel according to claim 1, characterized in that the display panel further comprises:

3. The display panel according to claim 1, wherein the first trace, the second trace and the first electrode are disposed on the same layer; the first routing lines and the second routing lines are parallel to each other and are respectively positioned on two sides of each row or each column of the pixels.

4. The display panel according to claim 1, wherein the substrate has a display region and a non-display region, the display panel further comprising at least one scan driving unit located in the non-display region; the scanning driving unit is connected with the second electrodes and provides scanning driving signals for each second electrode.

5. The display panel according to claim 4, wherein the plurality of second electrodes are divided into a plurality of second electrode groups, each second electrode group comprises at least two second electrodes, and each row or each column of pixels corresponding to each second electrode of the second electrode group respectively belong to different pixel groups;

6. The display panel according to claim 5, further comprising at least one data driving unit located in the non-display area;

the data driving unit is connected with the first electrodes through the first wires and the second wires and provides data driving signals for each first electrode.

7. The display panel according to any one of claims 1 to 6, wherein each row or each column of the pixels includes at least two groups of the first pixel groups and at least one group of the second pixel groups.

8. The display panel according to claim 7, wherein pixels in the first pixel group are adjacently disposed;

the pixels in the second pixel group are disposed adjacent to or spaced apart by at least one pixel.

9. The display panel according to claim 7, wherein the pixels in the first pixel group are arranged by at least one pixel;

10. A display terminal characterized by comprising the display panel according to any one of claims 1 to 9.