CN113066847B

CN113066847B - Display panel and display device

Info

Publication number: CN113066847B
Application number: CN202110322431.XA
Authority: CN
Inventors: 许传志; 谢正芳; 宋艳芹; 彭兆基
Original assignee: Kunshan Govisionox Optoelectronics Co Ltd
Current assignee: Kunshan Govisionox Optoelectronics Co Ltd
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2023-07-25
Anticipated expiration: 2041-03-25
Also published as: CN113066847A

Abstract

The invention discloses a display panel and a display device, wherein the display panel is provided with a first display area and a second display area, and the display panel comprises: a plurality of sub-pixels including a first sub-pixel and a second sub-pixel; the pixel circuit is positioned in the second display area and comprises a first pixel circuit and a second pixel circuit; the second display area is provided with a plurality of annular areas which encircle the periphery of the first display area and are concentrically distributed with the first display area, the first pixel circuits are arranged in the same row with the first sub-pixels connected with the first pixel circuits, and the first pixel circuits for driving the first sub-pixels in the same row are sequentially distributed in the same annular area; the first pixel circuits corresponding to the first sub-pixels in the same column are connected with the same first signal line, the second pixel circuits corresponding to the second sub-pixels in the same column are connected with the same second signal line, and the first signal lines and the second signal lines corresponding to the first sub-pixels and the second sub-pixels in the same column are connected with each other.

Description

Display panel and display device

Technical Field

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

Background

With the rapid development of electronic devices, the requirements of users on screen ratio are higher and higher, so that the full-screen display of the electronic devices is receiving more and more attention from the industry.

Conventional electronic devices such as mobile phones, tablet computers, and the like need to integrate such as front cameras, handsets, and infrared sensing elements. In the prior art, a display screen may be provided with a slot (Notch) or an opening, and external light may enter a photosensitive element located below the screen through the slot or the opening. However, none of these electronic devices is a truly full screen, and cannot display in all areas of the entire screen, for example, the area corresponding to the front camera cannot display a picture.

Disclosure of Invention

The embodiment of the invention provides a display panel and a display device, which realize that at least part of the area of the display panel is transparent and displayable, and are convenient for the under-screen integration of a photosensitive assembly.

An embodiment of a first aspect of the present invention provides a display panel having a first display region and a second display region, the first display region having a light transmittance greater than a light transmittance of the second display region, the display panel comprising: a plurality of sub-pixels arranged in rows and columns along the first direction and the second direction, the sub-pixels including a first sub-pixel located in the first display area and a second sub-pixel located in the second display area; the pixel circuit is positioned in the second display area and comprises a first pixel circuit used for driving the first sub-pixel and a second pixel circuit used for driving the second sub-pixel; the second display area is provided with a plurality of annular areas which encircle the periphery of the first display area and are concentrically distributed with the first display area, the first pixel circuits are arranged in the same row with the first sub-pixels connected with the first pixel circuits, and the first pixel circuits for driving the first sub-pixels in the same row are sequentially distributed in the same annular area; the first pixel circuits corresponding to the first sub-pixels in the same column are connected with the same first signal line, the second pixel circuits corresponding to the second sub-pixels in the same column are connected with the same second signal line, and the first signal lines and the second signal lines corresponding to the first sub-pixels and the second sub-pixels in the same column are connected with each other. .

According to one aspect of the embodiment of the present invention, the first display area is symmetrically disposed about a second symmetry axis, the second symmetry axis is symmetrically disposed to extend along the second direction, the second symmetry axis passes through the center of the first display area, the first pixel circuits corresponding to the two columns of first sub-pixels symmetrically distributed about the second symmetry axis are located in the same annular area, and the first pixel circuits are located at one side of the connected first sub-pixels facing away from the second symmetry axis.

According to an aspect of an embodiment of the invention, the plurality of first pixel circuits are symmetrically arranged about the second symmetry axis.

According to an aspect of an embodiment of the present invention, the plurality of first pixel circuits are symmetrically disposed about a first symmetry axis extending along the first direction, the first symmetry axis passing through a center of the first display area.

According to an aspect of the embodiment of the present invention, the first display area has a circular shape, an elliptical shape, or a regular polygon shape.

According to one aspect of the embodiment of the present invention, the first display area is circular, the annular area extends along an edge of the first display area to form a circular ring shape, and the plurality of first pixel circuits are distributed in rows and columns, and in at least two adjacent rows of first pixel circuits, the number of first pixel circuits in one row is greater than the number of first pixel circuits in another row.

According to an aspect of the embodiment of the present invention, the circuit configuration of the first pixel circuit is any one of a 2T1C circuit, a 7T2C circuit, or a 9T1C circuit.

According to an aspect of the embodiment of the present invention, the second display area has a circular shape disposed around the first display area, and the second display area includes a plurality of circular areas disposed at equal intervals in a direction away from a center of the first display area.

According to an aspect of the embodiment of the present invention, among the first signal line and the second signal line corresponding to the first subpixel and the second subpixel in the same column, the second signal line is located at least one side of the first subpixel of the column in the second direction, and the first signal line extends along the folded path and is connected to the second signal line.

According to an aspect of the embodiment of the present invention, the first signal line is connected to one end of the second signal line, or the first signal line is connected between both ends of the second signal line.

According to an aspect of the embodiment of the present invention, further comprising:

the first display area is positioned at one side of the first display area, which is away from the second display area, the plurality of sub-pixels further comprise first sub-pixels positioned in the first display area, the pixel circuit further comprises first pixel circuits for driving the first sub-pixels, and the first pixel circuits and the first sub-pixels are arranged in a one-to-one correspondence;

More than two second sub-pixels are connected to the same second pixel circuit; alternatively, the second sub-pixels and the second pixel circuits are arranged in one-to-one correspondence.

According to one aspect of an embodiment of the present invention, more than two second sub-pixels of the same color are connected to the same second pixel circuit.

According to one aspect of an embodiment of the invention, the size of the first sub-pixel is smaller than the size of the second sub-pixel of the same color.

According to one aspect of an embodiment of the invention, the size of the first subpixel is smaller than the size of the third subpixel of the same color.

According to one aspect of an embodiment of the invention, the second sub-pixel has a smaller size than the third sub-pixel.

According to an aspect of the embodiment of the present invention, the display panel further includes:

a substrate;

the first signal layer is positioned on the first signal line;

the second signal layer, the second signal line locates at the second signal layer, the first signal layer and second signal layer distribute in the same side of the substrate sequentially;

the insulating layer is positioned between the first signal layer and the second signal layer, and the insulating layer is provided with a connecting opening so that the first signal line and the second signal line are connected with each other through the connecting opening.

According to an aspect of the embodiment of the invention, the second signal layer is located on a side of the first signal layer facing away from the substrate, or on a side of the first signal layer facing towards the substrate.

the pixel definition layer is positioned on one side of the first signal layer and the second signal layer, which is away from the substrate, and comprises a first pixel opening positioned in the first display area;

the first sub-pixel comprises a first light emitting structure, a first electrode and a second electrode, wherein the first light emitting structure is positioned in the first pixel opening, the first electrode is positioned on one side of the first light emitting structure facing the substrate, and the second electrode is positioned on one side of the first light emitting structure facing away from the substrate.

According to an aspect of the embodiments of the present invention, the orthographic projection of each first light emitting structure on the substrate is composed of one first graphic unit or is composed of a concatenation of more than two first graphic units, the first graphic unit comprises at least one selected from the group consisting of a circle, an ellipse, a dumbbell, a gourd, and a rectangle.

According to an aspect of the embodiment of the present invention, the orthographic projection of each first electrode on the substrate is composed of one second graphic unit or is composed of a concatenation of more than two second graphic units, and the second graphic units comprise at least one selected from the group consisting of a circle, an ellipse, a dumbbell, a gourd and a rectangle.

According to an aspect of an embodiment of the invention, the first electrode is a light transmissive electrode.

According to one aspect of an embodiment of the invention, the first electrode is a reflective electrode.

According to one aspect of an embodiment of the invention, the first electrode comprises an indium tin oxide layer or an indium zinc oxide layer.

According to one aspect of an embodiment of the invention, the second electrode comprises a magnesium silver alloy layer.

According to one aspect of the embodiment of the present invention, the first sub-pixels and the first pixel circuits are arranged in one-to-one correspondence;

alternatively, two or more first sub-pixels are connected to the same first pixel circuit, so that the first pixel circuit can drive the two or more first sub-pixels.

According to an aspect of an embodiment of the present invention, two or more adjacent first sub-pixels of the same color are connected to the same first pixel circuit.

An embodiment of a second aspect of the present invention provides a display device, including the display panel of any one of the embodiments of the first aspect.

In the display panel provided by the embodiment of the first aspect of the invention, the light transmittance of the first display area is greater than that of the second display area, so that the display panel can integrate the photosensitive assembly on the back surface of the first display area, the under-screen integration of the photosensitive assembly of a camera for example is realized, meanwhile, the first display area can display pictures, the display area of the display panel is improved, and the overall screen design of the display device is realized.

In the display panel provided by the embodiment of the first aspect of the present invention, the first pixel circuits for driving the first sub-pixels in the same column are sequentially distributed in the same annular region, so that the first signal lines corresponding to the first sub-pixels in the same column can be sequentially connected to the first pixel circuits in the annular region. Because the first pixel circuits corresponding to the first sub-pixels of different columns are positioned in different annular areas, different first signal lines extend in different annular areas to be connected with the first pixel circuits, so that two adjacent first signal lines cannot intersect, and signal crosstalk can be avoided. In addition, the first signal lines and the second signal lines corresponding to the first sub-pixels and the second sub-pixels of the same column are connected to each other, and the first sub-pixels and the second sub-pixels of the same column may be driven using the driving signals of the same column. Therefore, in the display panel provided by the embodiment of the invention, not only the signal crosstalk problem in the display panel can be improved, but also the first sub-pixel and the second sub-pixel which are positioned in the same column can be driven by using the driving signals of the same column.

Drawings

Other features, objects and advantages of the present invention will become more apparent upon reading the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings, in which like reference characters designate the same or similar features, and in which the figures are not to scale.

Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the first aspect of the present invention;

FIG. 2 illustrates a partial enlarged view of the Q area of FIG. 1 in one example;

FIG. 3 illustrates a partially enlarged schematic construction of FIG. 2 in one example;

FIG. 4 shows a close-up view of the Q area of FIG. 1 for another example;

fig. 5 shows a partial cross-sectional view of fig. 3.

Reference numerals illustrate:

10. a display panel; 101. a substrate; 102. a first signal layer; 103. a second signal layer; 104. an insulating layer; 105. a pixel definition layer;

110. a first subpixel; 111. a first light emitting structure; 112. a first electrode; 113. a second electrode; 120. a second subpixel; 121. a second light emitting structure; 122. a third electrode; 123. a fourth electrode; 130. a third sub-pixel;

210. a first pixel circuit; 220. a second pixel circuit;

310. a first signal line; 320. a second signal line;

AA1, a first display area; AA2, a second display area; AA3, a third display area;

m, a first symmetry axis; n, a second axis of symmetry;

x, a first direction; y, second direction.

Detailed description of the preferred embodiments

Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are merely configured to illustrate the invention and are not configured to limit the invention. It will be apparent 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 invention by showing examples of the invention.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

It will be understood that when a layer, an area, or a structure is described as being "on" or "over" another layer, another area, it can be referred to as being directly on the other layer, another area, or another layer or area can be included between the layer and the other layer, another area. And if the component is turned over, that layer, one region, will be "under" or "beneath" the other layer, another region.

On an electronic device such as a mobile phone and a tablet computer, a photosensitive element such as a front camera, an infrared light sensor, a proximity light sensor, and the like needs to be integrated on one side of a display panel. In some embodiments, a transparent display area may be disposed on the electronic device, and the photosensitive component is disposed on the back of the transparent display area, so as to implement full screen display of the electronic device under the condition that the photosensitive component is ensured to work normally.

In order to improve the light transmittance of the light-transmitting display area, the driving circuit of the light-transmitting area is often disposed in the non-light-transmitting area, which may cause that the driving circuits of the sub-pixels in the same column in the display panel may not be in the same column, and it is difficult to drive the sub-pixels in the display panel row by row.

In order to solve the above problems, embodiments of the present invention provide a display panel and a display device, and embodiments of the display panel and the display device will be described below with reference to the accompanying drawings.

Embodiments of the present invention provide a display panel, which may be an organic light emitting diode (Organic Light Emitting Diode, OLED) display panel.

Fig. 1 shows a schematic top view of a display panel according to an embodiment of the invention.

As shown in fig. 1, the display panel 10 has a first display area AA1, a second display area AA2, and a non-display area NA surrounding the first display area AA1 and the second display area AA2, wherein the light transmittance of the first display area AA1 is greater than the light transmittance of the second display area AA 2.

Herein, it is preferable that the light transmittance of the first display area AA1 is greater than or equal to 15%. To ensure that the light transmittance of the first display area AA1 is greater than 15%, even greater than 40%, even higher, the light transmittance of each functional film layer of the display panel 10 in this embodiment is greater than 80%, and even at least a portion of the functional film layers is greater than 90%.

According to the display panel 10 of the embodiment of the invention, the light transmittance of the first display area AA1 is greater than the light transmittance of the second display area AA2, so that the display panel 10 can integrate the photosensitive assembly on the back of the first display area AA1, thereby realizing the under-screen integration of the photosensitive assembly such as a camera, and simultaneously, the first display area AA1 can display pictures, thereby improving the display area of the display panel 10 and realizing the overall screen design of the display device.

The number of the first display area AA1 and the second display area AA2 is set in multiple manners, for example, the number of the first display area AA1 and the second display area AA2 is 1, which is used for realizing the under-screen integration of the photosensitive assembly or for realizing fingerprint identification. Alternatively, in other alternative embodiments, the number of the first display area AA1 and the second display area AA2 is two, where one set of the first display area AA1 and the second display area AA2 is used to implement the under-screen integration of the photosensitive assembly, and the other set of the first display area AA1 and the second display area AA2 is used to implement fingerprint recognition.

Referring to fig. 2 and 3 together, fig. 2 is a schematic diagram of a partial enlarged structure of the Q region in fig. 1. Fig. 3 is a partially enlarged structural view of the upper left quarter area in fig. 2.

As shown in fig. 2 and 3, the display panel 10 provided in the embodiment of the present invention includes: a plurality of sub-pixels arranged in rows and columns in a first direction (X direction in fig. 2) and a second direction (Y direction in fig. 2), the sub-pixels including a first sub-pixel 110 located in the first display area AA1 and a second sub-pixel 120 located in the second display area AA 2; a pixel circuit located in the second display area AA2, the pixel circuit including a first pixel circuit 210 for driving the first sub-pixel 110, and a second pixel circuit 220 for driving the second sub-pixel 120; the second display area AA2 has a plurality of annular areas surrounding the periphery of the first display area AA1 and concentrically distributed with the first display area AA1, and the first pixel circuits 210 are arranged in the same row as the first sub-pixels 110 connected thereto, and the first pixel circuits 210 for driving the same-row first sub-pixels 110 are sequentially distributed in the same annular area; the first pixel circuits 210 corresponding to the first sub-pixels 110 in the same column are connected to the same first signal line 310, the second pixel circuits 220 corresponding to the second sub-pixels 120 in the same column are connected to the same second signal line 320, and the first signal line 310 and the second signal line 320 corresponding to the first sub-pixels 110 and the second sub-pixels 120 in the same column are connected to each other.

In the display panel 10 provided in the embodiment of the first aspect of the present invention, the first pixel circuits 210 for driving the first sub-pixels 110 in the same column are sequentially distributed in the same annular region, so that the first signal lines 310 corresponding to the first sub-pixels 110 in the same column can be sequentially connected to the first pixel circuits 210 in the annular region. Since the first pixel circuits 210 corresponding to the first sub-pixels 110 of different columns are located in different annular regions, the different first signal lines 310 extend in the different annular regions to connect the first pixel circuits 210, so that two adjacent first signal lines 310 do not intersect, and signal crosstalk can be avoided. In addition, the first signal lines 310 and the second signal lines 320 corresponding to the first and second sub-pixels 110 and 120 of the same column are connected to each other, and the first and second sub-pixels 110 and 120 of the same column may be driven using the driving signals of the same column. Therefore, in the display panel 10 provided by the embodiment of the invention, not only the signal crosstalk problem in the display panel 10 can be improved, but also the first sub-pixel 110 and the second sub-pixel 120 located in the same column can be driven by using the driving signal of the same column.

Referring to fig. 4 together, fig. 4 is a schematic diagram illustrating a partial enlarged structure at Q in fig. 1 according to another embodiment. The second pixel circuit 220 is omitted from fig. 4 for better illustration of the structure of the first pixel circuit 210.

The positions of one of the first signal line 310 and the second signal line 320 are illustrated in fig. 3 and 4, and the first signal line 310 and the second signal line 320 may be disposed at other positions as long as the first signal line 310 can be connected to the first pixel circuit 210 and the second signal line 320 can be connected to the second pixel circuit 220.

The arrangement positions of one of the first pixel circuit 210 and the second pixel circuit 220 are shown in fig. 3 and 4, and the first pixel circuit 210 and the second pixel circuit 220 may be arranged at other positions as long as the first pixel circuit 210 can drive the first sub-pixel 110 and the second pixel circuit 220 can drive the second sub-pixel 120.

Alternatively, when the first display area AA1 has more than two columns of the first sub-pixels 110, the first pixel circuits 210 connected to the more than two columns of the first sub-pixels 110 may be located in different annular areas.

In other alternative embodiments, the first display area AA1 is symmetrically disposed about the second symmetry axis N, the second symmetry axis is symmetrically disposed and extends along the second direction, the second symmetry axis N passes through the center of the first display area AA1, the first pixel circuits 210 corresponding to two columns of the first sub-pixels 110 symmetrically distributed about the second symmetry axis are located in the same annular area, and the first pixel circuits 210 are located on a side of the first sub-pixels 110 connected thereto facing away from the second symmetry axis.

In these alternative embodiments, the first pixel circuits 210 corresponding to the two columns of the first sub-pixels 110 symmetrically distributed about the second symmetry axis are located in the same annular region, and the first pixel circuits 210 are located on a side of the first sub-pixels 110 connected thereto facing away from the second symmetry axis. Therefore, the first pixel circuits 210 corresponding to the two rows of the first sub-pixels 110 symmetrically distributed about the second symmetry axis are disposed on both sides of the second symmetry axis, and the first pixel circuits 210 do not cross each other even if they are located in the same annular region. In addition, in the embodiment of the present invention, the arrangement of the first pixel circuits 210 is more regular and convenient, and the distribution of the first pixel circuits 210 is more uniform, so that the color non-uniformity problem of the display panel 10 can be improved.

Optionally, the plurality of first pixel circuits 210 are symmetrically arranged about the second symmetry axis N. The arrangement of the plurality of first pixel circuits 210 is made more uniform, and the problem of color unevenness of the display panel 10 can be further improved.

Alternatively, the plurality of first pixel circuits 210 are symmetrically disposed about a first symmetry axis M extending along the first direction, and the first symmetry axis M passes through the center of the first display area AA 1.

The first display area AA1 may be arranged in various shapes, and the first display area AA1 may be, for example, regular polygon or circular. The embodiment of the present invention is exemplified by the first display area AA1 having a circular shape. In other embodiments, the shape of the first display area AA1 may be an ellipse or a regular polygon, for example, a square, an equilateral triangle, or the like.

When the first display area AA1 is circular, the annular area extends along the edge of the first display area AA1 to form a circular ring shape, and the plurality of first pixel circuits 210 are distributed in rows and columns, and the number of first pixel circuits 210 in one row is greater than the number of first pixel circuits 210 in another row among at least two adjacent rows of first pixel circuits 210.

In these alternative embodiments, when the first display area AA1 is circular, at least two adjacent rows of the first sub-pixels 110, wherein the number of the first sub-pixels 110 in one row is greater than the number of the first sub-pixels 110 in the other row. The edge of the first display area AA1 is in a ring shape, and in at least two adjacent rows of the first pixel circuits 210, the number of the first pixel circuits 210 in one row is greater than the number of the first pixel circuits 210 in another row, so that the arrangement pattern of the first pixel circuits 210 is matched with the arrangement pattern of the first sub-pixels 110, and the arrangement of the first pixel circuits 210 is more scientific.

Optionally, among the plurality of first pixel circuits 210 corresponding to the first sub-pixels 110 in the same column and located in different rows, some adjacent first pixel circuits 210 are disposed in a staggered manner.

In some embodiments, the circuit structure of the first pixel circuit 210 is any one of a 2T1C circuit, a 7T2C circuit, or a 9T1C circuit. Herein, the "2T1C circuit" refers to a pixel circuit including 2 thin film transistors (T) and 1 capacitor (C) among pixel circuits, and the other "7T1C circuit", "7T2C circuit", "9T1C circuit", and so on.

Alternatively, the circuit structure of the second pixel circuit 220 is any one of a 2T1C circuit, a 7T2C circuit, or a 9T1C circuit.

Optionally, the second display area AA2 is annular and disposed around the first display area AA1, and the second display area AA2 includes a plurality of annular areas disposed at equal intervals in a direction away from a center of the first display area AA 1.

In these alternative embodiments, equidistant placement of the annular regions means that the width dimensions of the plurality of annular regions are the same, e.g. when the annular regions comprise two edges spaced apart, the minimum distance between the two edges of each annular region is the same. When the first pixel circuits 210 are distributed in the plurality of annular regions arranged at equal intervals, the distribution of the plurality of first pixel circuits 210 is more balanced, and the display effect of the display panel 10 is more uniform.

As shown in fig. 4, the first display area AA1 is circular, and the first display area AA1 includes 8 rows and 8 columns of the first sub-pixels 110. The 8 rows and 8 columns of first sub-pixels 110 are symmetrically distributed about both the first symmetry axis M and the second symmetry axis N. The first pixel circuits 210 for driving the first sub-pixels 110 are disposed on both sides of the second symmetry axis N and symmetrically disposed about the second symmetry axis N.

The second display area AA2 has four annular regions, and the plurality of first pixel circuits 210 symmetrically disposed about the second symmetry axis N are located in the same annular region. The first pixel circuit 210 for driving the first sub-pixel 110 of the 1 st column from the left in fig. 4 and the first pixel circuit 210 for driving the first sub-pixel 110 of the 8 th column from the left in fig. 4 are located in the same annular region farthest from the first display area AA 1. The first pixel circuit 210 for driving the first sub-pixel 110 of the 4 th column from the left in fig. 4 and the first pixel circuit 210 for driving the first sub-pixel 110 of the 5 th column from the left in fig. 4 are located in the same annular region nearest to the first display area AA 1.

Since the first display area AA1 is circular, the number of the first sub-pixels 110 is different between at least two adjacent rows. For example, in the first display area AA1, the number of the first sub-pixels 110 in the 1 st row in fig. 4 is smaller than the number of the first sub-pixels 110 in the 2 nd row. Then, the number of the first pixel circuits 210 corresponding to the first sub-pixel 110 in the 1 st row is smaller than the number of the first pixel circuits 210 in the 2 nd row, and the first pixel circuits 210 corresponding to the first sub-pixel 110 in the 1 st row and the first pixel circuits 210 in the 2 nd row are arranged in a staggered manner in the first direction.

In some alternative embodiments, among the first signal line 310 and the second signal line 320 corresponding to the same column of the first sub-pixel 110 and the second sub-pixel 120, the second signal line 320 is located at least one side of the column of the first sub-pixel 110 in the second direction, and the first signal line 310 extends along a folded path and is connected to the second signal line 320.

In these alternative embodiments, the second signal line 320 is located at one side of the first sub-pixel 110 in the column, the first signal line 310 is located at one side of the first sub-pixel 110 in the column in the first direction, and the first signal line 310 may be connected to the second signal line 320 after extending along the folded path, and the first sub-pixel 110 and the second sub-pixel 120 located in the column may be driven by the same signal, so as to realize column-by-column driving.

The first signal line 310 may be connected to an end of the second signal line 320, or the first signal line 310 may be connected between both ends of the second signal line 320. As long as the first signal line 310 is connected to the second signal line 320.

The first signal lines 310 may be disposed in various ways, for example, when the first pixel circuits 210 corresponding to the first sub-pixels 110 in the same column and located in two adjacent rows are disposed in a staggered manner, the first signal lines 310 extend along a step-shaped bending path. The arrangement is such that the first signal lines 310 can be connected to the plurality of first pixel circuits 210 corresponding to the first sub-pixels 110 of the same column, and also such that adjacent two first signal lines 310 do not cross, ensuring mutual insulation between the adjacent first signal lines 310.

The second signal line 320 may be arranged in various ways, and optionally, the second signal line 320 may be formed by extending along a straight line path, so as to facilitate the preparation of the second signal line 320.

In some alternative embodiments, the display panel 10 further includes a third display area AA3, the third display area AA3 is located at a side of the second display area AA2 facing away from the first display area AA1, the plurality of sub-pixels further includes a third sub-pixel 130 located at the third display area AA3, the pixel circuit further includes a third pixel circuit for driving the third sub-pixel 130, and the third pixel circuit and the third sub-pixel 130 are disposed in a one-to-one correspondence; more than two second sub-pixels 120 are connected to the same second pixel circuit 220.

In these alternative embodiments, more than two second sub-pixels 120 are connected to the same second pixel circuit 220, so that the same pixel circuit can drive more than two second sub-pixels 120, so as to reduce the number of second pixel circuits 220 and increase the light transmittance of the area where the second pixel circuits 220 are located.

In addition, the second display area AA2 is located between the first display area AA1 and the third display area AA3, and the first pixel circuit 210 is located in the second display area AA2, so that on one hand, the light transmittance of the first display area AA1 can be improved, and on the other hand, the transitional display effect between the first display area AA1 and the third display area AA3 can be improved.

In other alternative embodiments, the second sub-pixels 120 and the second pixel circuits 220 are arranged in a one-to-one correspondence. Each second sub-pixel 120 has a corresponding second pixel circuit 220, so that the display effect of the display panel 10 can be improved.

Alternatively, when two or more second sub-pixels 120 are connected to the same second pixel circuit 220, two or more second sub-pixels 120 of the same color are connected to the same second pixel circuit 220, so that the same second pixel circuit 220 is used to drive a plurality of second sub-pixels 120 of the same color.

Optionally, the size of the first sub-pixel 110 is smaller than the size of the second sub-pixel 120 with the same color, so that the occupied space of the first sub-pixel 110 in the first display area AA1 can be reduced, so that the area of the non-light-emitting area in the first display area AA1 is larger, and the light transmittance of the first display area AA1 is improved.

Optionally, the size of the first sub-pixel 110 is smaller than the size of the third sub-pixel 130 with the same color, so that the occupied space of the first sub-pixel 110 in the first display area AA1 can be reduced, so that the area of the non-light-emitting area in the first display area AA1 is larger, and the light transmittance of the first display area AA1 is improved conveniently.

Optionally, the size of the second sub-pixel 120 is smaller than that of the third sub-pixel 130, so that the occupied space of the second sub-pixel 120 in the second display area AA2 can be reduced, so that the area of the non-light-emitting area in the second display area AA2 is larger, and the light transmittance of the second display area AA2 can be further improved.

In other embodiments, the size of the third light emitting sub-pixel is the same as the size of the second sub-pixel 120 with the same color, so that the display difference between the second display area AA2 and the third display area AA3 is reduced, and the display uniformity is improved.

In some alternative embodiments, the first sub-pixels 110 and the first pixel circuits 210 are arranged in a one-to-one correspondence. Each first sub-pixel 110 is driven by a corresponding first pixel circuit 210, so that the display effect of the display panel 10 can be improved.

In alternative embodiments, more than two first sub-pixels 110 are connected to the same first pixel circuit 210, such that the first pixel circuit 210 is capable of driving more than two first sub-pixels 110. The number of the first pixel circuits 210 can be reduced, the distribution area of the first pixel circuits 210 in the second display area AA2 can be reduced, the light transmittance of the second display area AA2 can be improved, and the display difference between the second display area AA2 and the third display area AA3 can be improved.

Alternatively, two or more adjacent first sub-pixels 110 of the same color are connected to the same first pixel circuit 210, so as to facilitate the wiring of the display panel 10.

Referring to fig. 5, fig. 5 is a partial cross-sectional view of fig. 3. In fig. 5, a positional relationship of one of the first signal line 310, the second signal line 320, the first pixel circuit 210, and the second pixel circuit 220 is schematically shown, and the first signal line 310, the second signal line 320, the first pixel circuit 210, and the second pixel circuit 220 may be arranged in other positional relationships.

Optionally, the display panel 10 further includes: a substrate 101; a first signal layer 102, the first signal line 310 being located on the first signal layer 102; the second signal layer 103, the second signal line 320 is located on the second signal layer 103, and the first signal layer 102 and the second signal layer 103 are sequentially distributed on the same side of the substrate 101; the insulating layer 104 is located between the first signal layer 102 and the second signal layer 103, and a connection opening is formed in the insulating layer 104, so that the first signal line 310 and the second signal line 320 are connected to each other through the connection opening.

In these alternative embodiments, the first signal line 310 and the second signal line 320 are located in different layer structures, facilitating the preparation of the first signal line 310 and the second signal line 320, so that the first signal line 310 and the second signal line 320 are connected to each other through connection openings provided at predetermined positions.

The substrate 101 may be made of a light-transmitting material such as glass, polyimide (PI), or the like.

There are various manners of disposing the first signal layer 102 and the second signal layer 103 at opposite positions, for example, the second signal layer 103 is located on a side of the first signal layer 102 facing away from the substrate 101, or the second signal layer 103 is located on a side of the first signal layer 102 facing toward the substrate 101.

In some alternative embodiments, the display panel 10 further includes: a pixel defining layer 105, located on a side of the first signal layer 102 and the second signal layer 103 facing away from the substrate 101, the pixel defining layer 105 including a first pixel opening located in the first display area AA 1; the first sub-pixel 110 comprises a first light emitting structure 111, a first electrode 112 and a second electrode 113, the first light emitting structure 111 is located in the first pixel opening, the first electrode 112 is located on a side of the first light emitting structure 111 facing the substrate 101, and the second electrode 113 is located on a side of the first light emitting structure 111 facing away from the substrate 101. One of the first electrode 112 and the second electrode 113 is an anode, and the other is a cathode.

Optionally, the pixel defining layer 105 further includes a second pixel opening in the second display area AA2 and a third pixel opening in the third display area AA 3.

In some embodiments, the second subpixel 120 includes a second light emitting structure 121, a third electrode 122, and a fourth electrode 123. The second light emitting structure 121 is located in the second pixel opening, the third electrode 122 is located at a side of the second light emitting structure 121 facing the substrate 101, and the fourth electrode 123 is located at a side of the second light emitting structure 121 facing away from the substrate 101. One of the third electrode 122 and the fourth electrode 123 is an anode, and the other is a cathode.

In some embodiments, the third subpixel 130 includes a third light emitting structure, a fifth electrode, and a sixth electrode. The third light emitting structure is located in the third pixel opening, the fifth electrode is located at a side of the third light emitting structure facing the substrate 101, and the sixth electrode is located at a side of the third light emitting structure facing away from the substrate 101. One of the fifth electrode and the sixth electrode is an anode, and the other is a cathode.

In this embodiment, the first electrode 112, the third electrode 122, and the fifth electrode are anodes, and the second electrode 113, the fourth electrode 123, and the sixth electrode are cathodes.

The first, second, and third light emitting structures 111, 121, and 121 may include OLED light emitting layers, respectively, and may further include at least one of a hole injection layer, a hole transport layer, an electron injection layer, or an electron transport layer, respectively, according to design requirements of the first, second, and third light emitting structures 111, 121, and 121, respectively.

In some embodiments, the first electrode 112 is a light transmissive electrode. In some embodiments, the first electrode 112112 includes an Indium Tin Oxide (ITO) layer or an Indium zinc Oxide layer. In some embodiments, the first electrode 112 is a reflective electrode, including a first light transmissive conductive layer, a reflective layer on the first light transmissive conductive layer, and a second light transmissive conductive layer on the reflective layer. The first transparent conductive layer and the second transparent conductive layer can be ITO, indium zinc oxide and the like, and the reflecting layer can be a metal layer, for example, made of silver. The third electrode 122 and the fifth electrode may be formed of the same material as the first electrode 112.

In some embodiments, the second electrode 113 includes a magnesium silver alloy layer. The fourth electrode 123 and the sixth electrode may be formed of the same material as the second electrode 113. In some embodiments, the second electrode 113, the fourth electrode 123, and the sixth electrode may be interconnected as a common electrode.

In some embodiments, the orthographic projection of each first light emitting structure 111 onto the substrate 101 is comprised of one first graphic unit or is comprised of a concatenation of more than two first graphic units, the first graphic units comprising at least one selected from the group consisting of circular, oval, dumbbell-shaped, gourd-shaped, rectangular.

In some embodiments, the orthographic projection of each first electrode 112 onto the substrate 101 is comprised of one second graphic unit or is comprised of a concatenation of more than two second graphic units, the second graphic units comprising at least one selected from the group consisting of circular, oval, dumbbell, gourd, rectangular.

In some embodiments, the orthographic projection of each second light emitting structure 121 on the substrate 101 is composed of one third graphic unit or is composed of a concatenation of more than two third graphic units, the third graphic unit including at least one selected from the group consisting of a circle, an ellipse, a dumbbell, a gourd, a rectangle.

In some embodiments, the orthographic projection of each third electrode 122 on the substrate 101 is comprised of one fourth graphic unit or is comprised of a concatenation of more than two fourth graphic units, the fourth graphic unit comprising at least one selected from the group consisting of a circle, an ellipse, a dumbbell, a gourd, a rectangle.

The display panel 10 may further include an encapsulation layer, a polarizer and a cover plate disposed above the encapsulation layer, or the cover plate may be directly disposed above the encapsulation layer without the polarizer, or at least the cover plate may be directly disposed above the encapsulation layer of the first display area AA1 without the polarizer, so that the polarizer does not affect the light collection amount of the photosensitive element disposed below the corresponding first display area AA1, and of course, the polarizer may also be disposed above the encapsulation layer of the first display area AA 1.

The embodiment of the second aspect of the present invention also provides a display device, which may include the display panel 10 of any of the above embodiments. A display device of an embodiment in which the display device includes the display panel 10 of the above-described embodiment will be described below as an example. In the display device of the present embodiment, the display panel 10 may be the display panel 10 of one of the above embodiments, where the display panel 10 has a first display area AA1 and a second display area AA2, and the light transmittance of the first display area AA1 is greater than the light transmittance of the second display area AA 2.

In some alternative embodiments, the display device further includes a photosensitive element disposed on one side of the display panel 10, and a front projection of the photosensitive element on the display panel 10 is located in the first display area AA1, so that the photosensitive element can transmit light to the first display area AA1 to obtain light information.

The photosensitive assembly may be an image capturing device for capturing external image information. For example, the photosensitive element is a complementary metal oxide semiconductor (Complementary Metal Oxide Semiconductor, CMOS) image capturing Device, and in other embodiments, the photosensitive element may be another type of image capturing Device such as a Charge-coupled Device (CCD) image capturing Device. It is understood that the photosensitive component may not be limited to an image capturing device, for example, in some embodiments, the photosensitive component may also be an infrared sensor, a proximity sensor, an infrared lens, a floodlight sensing element, an ambient light sensor, a lattice projector, and the like.

According to the display device of the embodiment of the invention, the light transmittance of the first display area AA1 is greater than that of the second display area AA2, so that the display panel 10 can integrate the photosensitive assembly on the back of the first display area AA1, for example, the under-screen integration of the photosensitive assembly of the image acquisition device is realized, and meanwhile, the first display area AA1 can display images, so that the display area of the display panel 10 is increased, and the overall screen design of the display device is realized.

In other alternative embodiments, the photosensitive component may also be a fingerprint recognition sensor. Because the transmittance of the first display area AA1 is higher, the photosensitive assembly can obtain more accurate fingerprint information through the first display area AA 1.

These embodiments are not exhaustive or to limit the invention to the precise embodiments disclosed, and according to the invention described above. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention and various modifications as are suited to the particular use contemplated. The invention is limited only by the claims and the full scope and equivalents thereof.

Claims

1. A display panel having a first display region and a second display region, the first display region having a light transmittance that is greater than a light transmittance of the second display region, the display panel comprising:

a plurality of sub-pixels arranged in rows and columns along a first direction and a second direction, the sub-pixels including a first sub-pixel located in the first display area and a second sub-pixel located in the second display area;

a pixel circuit located in the second display region, the pixel circuit including a first pixel circuit for driving the first sub-pixel and a second pixel circuit for driving the second sub-pixel;

the second display area is provided with a plurality of annular areas which encircle the periphery of the first display area and are concentrically distributed with the first display area, the first pixel circuits are arranged in the same row with the first sub-pixels connected with the first pixel circuits, and the first pixel circuits for driving the first sub-pixels in the same row are sequentially distributed in the same annular area;

the first pixel circuits corresponding to the first sub-pixels in the same column are connected with the same first signal line, the second pixel circuits corresponding to the second sub-pixels in the same column are connected with the same second signal line, and the first signal lines and the second signal lines corresponding to the first sub-pixels and the second sub-pixels in the same column are connected with each other;

In the first signal line and the second signal line corresponding to the first sub-pixel and the second sub-pixel in the same column, the second signal line is located at least one side of the first sub-pixel in the second direction of the column, and the first signal line extends along a folded path and is connected to the second signal line.

2. The display panel according to claim 1, wherein the first display area is symmetrically disposed about a second symmetry axis, the second symmetry axis extends along the second direction, the second symmetry axis passes through a center of the first display area, the first pixel circuits corresponding to the two columns of the first sub-pixels symmetrically distributed about the second symmetry axis are located in a same annular area, and the first pixel circuits are located on a side of the first sub-pixels connected thereto facing away from the second symmetry axis.

3. The display panel of claim 2, wherein a plurality of the first pixel circuits are symmetrically disposed about the second axis of symmetry.

4. The display panel according to claim 2, wherein a plurality of the first pixel circuits are symmetrically disposed about a first symmetry axis extending along the first direction, the first symmetry axis passing through a center of the first display area.

5. The display panel of claim 2, wherein the first display area is circular, elliptical, or regular polygon.

6. The display panel according to claim 2, wherein the first display area is circular, the annular area extends along an edge of the first display area to form a circular ring shape, a plurality of the first pixel circuits are distributed in rows and columns, and the number of the first pixel circuits in one row is larger than the number of the first pixel circuits in the other row in at least two adjacent rows.

7. The display panel according to claim 6, wherein the circuit structure of the first pixel circuit is any one of a 2T1C circuit, a 7T2C circuit, or a 9T1C circuit.

8. The display panel according to claim 6, wherein the second display region has a circular ring shape disposed around the first display region, and the second display region includes a plurality of the circular regions disposed at equal intervals in a direction away from a center of the first display region.

9. The display panel according to claim 1, wherein the first signal line is connected to one end of the second signal line or the first signal line is connected between both ends of the second signal line.

10. The display panel of claim 1, further comprising:

the third display area is positioned at one side of the second display area, which is away from the first display area, the plurality of sub-pixels further comprise third sub-pixels positioned in the third display area, the pixel circuits further comprise third pixel circuits for driving the third sub-pixels, and the third pixel circuits and the third sub-pixels are arranged in a one-to-one correspondence;

more than two second sub-pixels are connected to the same second pixel circuit; or the second sub-pixels and the second pixel circuits are arranged in a one-to-one correspondence.

11. The display panel of claim 10, wherein more than two of the second sub-pixels of the same color are connected to the same second pixel circuit.

12. The display panel of claim 11, wherein the first subpixel has a size smaller than the second subpixel of the same color.

13. The display panel of claim 11, wherein the first subpixel has a size smaller than a size of the third subpixel of the same color.

14. The display panel of claim 11, wherein the second sub-pixel has a size smaller than the third sub-pixel.

15. The display panel of claim 1, further comprising:

a substrate;

a first signal layer, the first signal line being located at the first signal layer;

the second signal layer is positioned on the second signal line, and the first signal layer and the second signal layer are sequentially distributed on the same side of the substrate;

the insulating layer is positioned between the first signal layer and the second signal layer, and a connecting opening is formed in the insulating layer, so that the first signal line and the second signal line are connected with each other through the connecting opening.

16. The display panel of claim 15, wherein the second signal layer is located on a side of the first signal layer facing away from the substrate or the second signal layer is located on a side of the first signal layer facing toward the substrate.

17. The display panel of claim 15, further comprising:

the pixel definition layer is positioned on one side of the first signal layer and one side of the second signal layer, which are away from the substrate, and comprises a first pixel opening positioned in the first display area;

the first sub-pixel comprises a first light-emitting structure, a first electrode and a second electrode, wherein the first light-emitting structure is positioned in the first pixel opening, the first electrode is positioned on one side of the first light-emitting structure facing the substrate, and the second electrode is positioned on one side of the first light-emitting structure facing away from the substrate.

18. The display panel of claim 17, wherein the orthographic projection of each first light emitting structure on the substrate is comprised of one first graphic element or is comprised of a concatenation of two or more first graphic elements, the first graphic elements comprising at least one selected from the group consisting of a circle, an oval, a dumbbell, a gourd, and a rectangle.

19. The display panel of claim 17, wherein the orthographic projection of each first electrode on the substrate is composed of one second graphic unit or is composed of a concatenation of two or more second graphic units, the second graphic units including at least one selected from the group consisting of a circle, an ellipse, a dumbbell, a gourd, and a rectangle.

20. The display panel of claim 17, wherein the first electrode is a light transmissive electrode.

21. The display panel of claim 17, wherein the first electrode is a reflective electrode.

22. The display panel of claim 17, wherein the first electrode comprises an indium tin oxide layer or an indium zinc oxide layer.

23. The display panel of claim 17, wherein the second electrode comprises a magnesium silver alloy layer.

24. The display panel of claim 1, wherein the display panel comprises,

the first sub-pixels and the first pixel circuits are arranged in one-to-one correspondence;

alternatively, two or more of the first sub-pixels are connected to the same first pixel circuit, so that the first pixel circuit can drive two or more of the first sub-pixels.

25. The display panel of claim 24, wherein adjacent two or more of the first subpixels of the same color are connected to the same first pixel circuit.

26. A display device comprising the display panel according to any one of claims 1 to 25.