CN111834399B

CN111834399B - Display panel and display device

Info

Publication number: CN111834399B
Application number: CN202010058719.6A
Authority: CN
Inventors: 卢慧玲; 朱杰; 许传志; 胡思明
Original assignee: Kunshan Govisionox Optoelectronics Co Ltd
Current assignee: Kunshan Govisionox Optoelectronics Co Ltd
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2022-10-21
Anticipated expiration: 2040-01-19
Also published as: CN111834399A

Abstract

The embodiment of the invention relates to the technical field of display, and discloses a display panel and a display device, wherein the display panel comprises: the light-emitting device comprises a first area and a second area, wherein the transmittance of the first area is greater than that of the second area, and a plurality of first light-emitting units are arranged in the first area; the second area is adjacent to the first area, and a plurality of driving circuits are arranged in the second area; the driving circuits are connected with the first light-emitting units in a one-to-one correspondence mode, and the shortest distance from each driving circuit to the first area is equal. The display panel and the display device provided by the invention can avoid uneven display brightness of the display panel and improve the uniformity of image picture display.

Description

Display panel and display device

Technical Field

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

Background

An OLED (Organic Light-Emitting Diode) is called an Organic electroluminescent Diode. The OLED display technology has many advantages, such as full solid state, active light emission, high contrast, ultra-thin, low power consumption, fast effect speed, wide working range, and easy realization of flexible display and 3D display, and is currently applied to many display screens, for example, television sets and mobile display devices. The display screen has areas with different transmittances, the driving circuit in the area with higher transmittance is generally arranged in the peripheral transition area, and the characteristics of the TFTs in the pixel circuits of the columns are different, so that the display brightness of the auxiliary screen is not uniform.

In the prior art, methods for improving the non-uniformity of the display brightness of the OLED display device are desired to be improved, and therefore, there is a need to provide a new display panel and a new display device to solve the above problems.

Disclosure of Invention

An object of the embodiments of the present invention is to provide a display panel and a display device, which can avoid uneven display brightness of the display panel and improve uniformity of image screen display.

To solve the above technical problem, an embodiment of the present invention provides a display panel including:

the light-emitting device comprises a first area and a second area, wherein the transmittance of the first area is greater than that of the second area, and a plurality of first light-emitting units are arranged in the first area; the second area is adjacent to the first area, and a plurality of driving circuits are arranged in the second area; the driving circuits are connected with the first light-emitting units in a one-to-one correspondence mode, and the shortest distance from each driving circuit to the first area is equal.

In addition, the second area comprises a first sub-area and a second sub-area which are not adjacent to each other, and the first area is clamped between the first sub-area and the second sub-area.

In addition, the shortest distance from the driving circuit in the first sub-area to the first area is equal to the shortest distance from the driving circuit in the second sub-area to the first area. By the method, the consistency of the TFT characteristics of the drive circuits in the first sub-area and the second sub-area can be ensured, so that the brightness of the light-emitting units in the first area connected with the drive circuits in any sub-area is consistent, the uneven display brightness of the display panel can be further avoided, and the uniformity of image picture display is improved.

In addition, the second region comprises a third sub-region and a fourth sub-region which are not adjacent to each other, and a fifth sub-region and a sixth sub-region which connect the third sub-region and the fourth sub-region, the third sub-region, the fourth sub-region, the fifth sub-region and the sixth sub-region together form a ring-shaped structure, and the ring-shaped structure surrounds the first region.

In addition, the driving circuit is disposed within the third sub-region and the fourth sub-region; the shortest distance from the driving circuit in the third sub-area to the first area is equal to the shortest distance from the driving circuit in the fourth sub-area to the first area.

In addition, the light emitting unit includes a blue sub-pixel, a red sub-pixel, and a green sub-pixel; the driving circuit comprises a blue sub-pixel circuit, a red sub-pixel circuit and a green sub-pixel circuit, wherein the blue sub-pixel circuit is connected with the blue sub-pixel, the red sub-pixel circuit is connected with the red sub-pixel, and the green sub-pixel circuit is connected with the green sub-pixel.

In addition, the shortest distances from the plurality of blue sub-pixel circuits to the first region are equal; the shortest distances from the plurality of red sub-pixel circuits to the first area are equal; the shortest distances from the plurality of green sub-pixel circuits to the first region are equal. Through the arrangement of the structure, the luminance of the sub-pixels with the same color connected with the driving circuit is consistent, so that the uneven display luminance of the display panel is further avoided, and the uniformity of image picture display is improved.

In addition, a second light emitting unit is arranged in the second area, and the driving circuit comprises a first driving circuit and a second driving circuit; the first driving circuits are connected with the first light-emitting units in a one-to-one correspondence mode, and the second driving circuits are connected with the second light-emitting units; preferably, the display panel further includes a plurality of wires, and the first driving circuit is connected to the first light emitting unit via the wires; the second driving circuit is connected with the routing line and the second light emitting unit through the routing line.

The embodiment of the invention also provides a display device, which comprises the display panel and a photosensitive element, wherein the photosensitive element is positioned below the first area of the display panel.

In addition, the photosensitive element comprises a first photosensitive area and a second photosensitive area, and the orthographic projection of the first photosensitive area on the display panel is located in the first area.

Compared with the prior art, the implementation mode of the invention has the following advantages:

the transmittance of the first area is greater than that of the second area, the first area is internally provided with the plurality of first light-emitting units, and the first area is generally arranged corresponding to the externally-connected photosensitive element, so that a driving circuit is not arranged on one side of the photosensitive element, which faces the display panel, so that the driving circuit can be effectively prevented from blocking external light from entering the photosensitive element, the light transmittance is improved, and the optical performance of the photosensitive element is ensured; a plurality of driving circuits are arranged in a second area adjacent to the first area, and the driving circuits are correspondingly connected with the first light-emitting units one by one, namely, one driving circuit is connected with one light-emitting unit, so that the first area emits light; in addition, by setting the shortest distance from each driving circuit to the first area to be equal, that is, the driving circuits are sequentially arranged along the preset direction, the manufacturing environment (for example, etching) of each driving circuit is ensured to be consistent, so that the TFT characteristics of each driving circuit are consistent, the light emitting brightness of the light emitting unit connected with the driving circuits is consistent, the display brightness of the display panel can be prevented from being uneven, and the uniformity of image display can be improved.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

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

fig. 2 is a schematic structural diagram of a display panel according to a first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a display panel according to a second embodiment of the present invention;

fig. 4 is a schematic structural diagram of a display device according to a third embodiment of the present invention.

Detailed Description

In order to solve the display non-uniformity problem of the OLED display device in terms of brightness, an image display control technique is generally adopted to improve image driving. The image display control method includes internal compensation and external compensation. The internal compensation refers to a method of compensating inside the sub-pixel using a sub-circuit constructed with TFTs. The external compensation is a method of extracting TFT and OLED signals to the outside of the backplane and then performing image display control through an external application integrated circuit (ASIC circuit). Generally, the structure and driving method of the internally compensated sub-pixel are complex, and in a display device with large size, high resolution and high refresh rate, the internally compensated method causes the problems of reduced aperture ratio and slow driving speed. The external compensation mode has the advantages of simple sub-pixel structure, high driving speed and good compensation effect, so that the external compensation is a better compensation scheme in large-size OLED display.

The external compensation is divided into optical extraction compensation and electrical extraction compensation. The optical extraction type is to extract a brightness signal by an optical CCD photographing method after the back plate is lightened, and the electrical extraction type is to extract electrical signals of a TFT (thin film transistor) and an OLED (organic light emitting diode) by an induction circuit of a driving chip. The two methods extract different kinds of signals, and thus the data processing modes are different. The optical extraction method has the advantages of simple structure and flexible method, and is widely adopted at present.

However, the problem of non-uniformity of display of the OLED display in terms of brightness is solved only by using an image display control technique during image driving, which is complicated in technical means on one hand, and the problem of non-uniformity of display brightness of the display panel above the photosensitive element on the other hand cannot be solved.

Therefore, embodiments of the present invention provide a display panel and a display apparatus, in which the shortest distance from each driving circuit to the first region is equal, that is, the driving circuits are sequentially arranged along the predetermined direction, so as to ensure that the manufacturing environments (for example, etching) of the driving circuits are the same, so that the TFT characteristics of the driving circuits are the same, and the light-emitting luminances of the light-emitting units connected to the driving circuits are the same, thereby avoiding the uneven display luminance of the display panel and improving the uniformity of image display.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present invention in its various embodiments. However, the technical solution claimed in the present invention can be implemented without these technical details and various changes and modifications based on the following embodiments.

The first embodiment of the present invention relates to a display panel 100, which has a specific structure as shown in fig. 1 and 2, and includes:

the LED display panel comprises a first area 1 and a second area 2, wherein a plurality of first light-emitting units 10 are arranged in the first area 1; the second area 2 is adjacent to the first area 1, and a plurality of driving circuits 20 are arranged in the second area 2, and the transmittance of the first area 1 is greater than that of the second area 2 because the driving circuits of the light-emitting units of the first area are arranged in the second area; the driving circuits 20 are connected to the first light emitting units 10 in a one-to-one correspondence, and the shortest distance a from each driving circuit 20 to the first area 10 is equal.

Specifically, the driving circuit 20 is electrically connected to the first light emitting unit 10 through the trace 3, and the driving circuit 20 in this embodiment is a TFT layer including an active layer, a gate insulating layer, a gate electrode, an interlayer insulating layer, a source electrode, and a drain electrode. The active layer is arranged on the flexible substrate, the grid insulating layer is arranged on the active layer, the grid electrode is arranged on the grid insulating layer, and the interlayer insulating layer is arranged on the grid electrode. One end of the source electrode is connected with one end of the drain electrode through the active layer, and the other end of the source electrode and the other end of the drain electrode respectively penetrate through the gate insulating layer and the interlayer insulating layer in sequence and extend into the planarization layer. The planarization layer has a via in it through which the trace 3 is electrically connected to the source or drain (the connected pole can be selected depending on whether the TFT is N-type or P-type).

In practical applications, the flexible substrate may be formed of a polymer material such as imide (PI), polycarbonate (PC), polyethersulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyarylate (PAR), or glass Fiber Reinforced Plastic (FRP). The flexible substrate may be transparent, translucent, or opaque to provide support for the formation of various film layers disposed thereon.

The active layer may be an Indium Gallium Zinc Oxide (IGZO) layer. The gate insulating layer may be an inorganic layer formed of, for example, silicon oxide, silicon nitride, or metal oxide, and the gate insulating layer may have a single-layer or multi-layer structure. The gate electrode may have a single or multi-layered structure formed of gold (Au), silver (Ag), copper (Cu), nickel (Ni), platinum (Pt), palladium (Pd), aluminum (Al), molybdenum (Mo), or chromium (Cr), or a layer structure formed of an alloy such as an aluminum (Al) neodymium (Nd) alloy, a molybdenum (Mo) tungsten (W) alloy, or the like. The interlayer insulating layer may be formed of an insulating inorganic material such as silicon oxide or silicon nitride, and may have a single-layer or multilayer structure.

Compared with the prior art, the transmittance of the first region 1 is greater than that of the second region 2, and because the first region is generally arranged corresponding to the externally-connected photosensitive element, the driving circuit 20 is not arranged on one side of the photosensitive element facing the display panel, so that the driving circuit 20 is effectively prevented from blocking external light from entering the photosensitive element, the photosensitive element can receive enough light, and the optical performance of the photosensitive element is ensured; the first area 1 emits light by arranging a plurality of driving circuits 20 in the second area 2 adjacent to the first area 1, and the driving circuits 20 are connected with the first light emitting units 10 in a one-to-one correspondence manner, that is, one driving circuit 20 is connected with one light emitting unit 10; in addition, on one hand, when the driving circuit 20 of the second region 2 is formed, specifically in the developing and etching process, the structure such as the anode, the gate, and the storage capacitor of the driving circuit 20 far away from the first region 1 is formed by normal etching, and the structure such as the anode of the driving circuit 20 near the first region 1 has no other structure for etching on one side, and the redundant etching liquid further etches the structure such as the anode of the driving circuit 20 near the first region 1, so that the size of the structure such as the anode near the first region 1 is smaller than that of the structure such as the anode far away from the first region 1, and the luminance of the pixel near the first region 1 in the second region 2 is different from that of the pixel far away from the first region 1 when the driving voltages are equal; on the other hand, the light passing through the first area 1 may be incident to the active area of the driving circuit 20 close to the first area 1 after being internally reflected, so that a photo-generated current is formed due to a photoelectric effect, and the performance of the driving circuit 20 close to the first area 1 is changed, and further the luminance 100 of the display panel is not uniform, therefore, by setting the shortest distance a between each driving circuit 20 and the first area 1 to be equal, that is, the driving circuits 20 are sequentially arranged along the preset direction X, it is ensured that the TFT characteristics of each driving circuit 20 are uniform, and the luminance of the light emitting unit connected to the driving circuits 20 is uniform, so that the display luminance of the display panel 100 is not uniform, and the uniformity of the image display is improved.

The second region 2 in the present embodiment includes a first subregion 21 and a second subregion 22 that are not adjacent to each other, and the first region 1 is sandwiched between the first subregion 21 and the second subregion 22. Specifically, the driving circuits 20 are arranged in the first sub-region 21 and the second sub-region 22, and the driving circuits 20 in the first sub-region 21 and the second sub-region 22 are arranged in sequence along the preset direction X; the plurality of first light emitting units 10 in the first region 1 are arranged in a matrix.

It is worth mentioning that the shortest distance from the driving circuit 20 in the first sub-area 21 to the first area 1 is equal to the shortest distance from the driving circuit 20 in the second sub-area 22 to the first area 1. In this way, it is possible to ensure that the TFT characteristics of the drive circuits 20 in the first and

second sub-regions

21 and 22 are consistent, and the light emission luminance of the light-emitting cells 10 in the first region 1 connected to the drive circuits 20 in any sub-region is consistent, thereby further avoiding the display luminance unevenness of the display panel 100 and improving the uniformity of the image display.

Referring to fig. 2, the light emitting unit 10 includes a blue sub-pixel 101, a red sub-pixel 102 and a green sub-pixel 103; the driving circuit 20 includes a blue sub-pixel circuit 201, a red sub-pixel circuit 202, and a green sub-pixel circuit 203, the blue sub-pixel circuit 201 is connected to the blue sub-pixel 101, the red sub-pixel circuit 202 is connected to the red sub-pixel 102, and the green sub-pixel circuit 203 is connected to the green sub-pixel 103.

Since there are a plurality of drive circuits 20, there are a plurality of blue sub-pixel circuits 201, red sub-pixel circuits 202, and green sub-pixel circuits 203, and the shortest distances from the plurality of blue sub-pixel circuits 201 to the first region 1 are equal in the present embodiment; the shortest distances from the plurality of red sub-pixel circuits 202 to the first area 1 are equal; the shortest distances of the plurality of green sub-pixel circuits 203 to the first area 1 are equal. It is understood that the shortest distances from the sub-pixel circuits corresponding to the sub-pixels of the same color to the first area 1 are equal, while the shortest distances from the sub-pixel circuits corresponding to the sub-pixels of different colors to the first area 1 may not be equal, for example, the shortest distance from the blue sub-pixel circuit 201 to the first area 1 may not be equal to the shortest distance from the red sub-pixel circuit 202 to the first area 1. With such a configuration, the luminance of the sub-pixels of the same color connected to the driving circuit 20 is uniform, so that the display luminance unevenness of the display panel is further prevented, and the uniformity of the image display is improved.

Preferably, the second light emitting unit 4 is disposed in the second region 2, and the driving circuit 20 includes a first driving circuit 211 and a second driving circuit 212; the first driving circuits 211 are connected to the first light emitting units 10 in a one-to-one correspondence, and the second driving circuits 212 are connected to the second light emitting units 4. That is, the driving circuit 20 of the second region 2 is responsible for light emission of the pixels of the second region 2 and the pixels of the first region 1. Since the TFT special effects of the first driving circuit 211 and the second driving circuit 212 are the same, the arrangement of such a configuration can make the emission luminances of the first light-emitting unit 10 in the first region 1 and the second light-emitting unit 4 in the second region 2 the same, thereby further avoiding the display luminance unevenness of the display panel and improving the uniformity of the image display. It should be noted that there may be a plurality of second driving circuits 212 and a plurality of second light emitting units 4, and at this time, the second driving circuits 212 are connected to the second light emitting units 4 in a one-to-one correspondence; the number of the second driving circuits 212 may be one, and the number of the second light emitting units 4 is also one, in which case the second driving circuits 212 are connected to the second light emitting units 4.

Referring to fig. 1, a first area 1 is divided into 24 cells including six columns and four rows, and a first light-emitting unit 10 is disposed in each cell; the first sub-area 21 is divided into a column and four rows, and four driving circuits 20 arranged in sequence along the preset direction X are arranged in each unit cell; the second sub-area 22 is divided into a column and four rows, and four driving circuits 20 are sequentially arranged in each unit cell along the preset direction X. The four driving circuits 20 include a first driving circuit 211 and three second driving circuits 212, the first driving circuit 211 is connected to the second light emitting unit 4, and the second driving circuits 212 are respectively connected to the first light emitting unit 10 via different wires 3. It is to be understood that the number of the first light emitting units 10 in the first region 1 and the number of the driving circuits 20 in the second region 2 are not particularly limited in this embodiment, and different numbers of the first light emitting units 10 and the driving circuits 20 may be designed according to actual requirements.

It should be noted that, since the driving circuit 20 of the second region 2 and the driving circuit of the main panel are formed together, that is, the driving circuit 20 of the second region 2 and the driving circuit of the main panel have the same density, but the driving circuit 20 of the second region 2 is also responsible for the light emitting unit 10 of the first region 1 to emit light, so that the luminance of the second region 2 (and the first region 1) is different from the luminance of the main panel under the condition of the same driving voltage. From the above analysis, when the brightness of the display screen is required to be a target value, it is necessary to compensate the brightness of the second region 2 (and the first region 1) and the main screen.

It can be understood that in the present embodiment, the actual optical data of all the sub-pixels in the white picture can be obtained by performing pixel brightness acquisition on the white picture displayed by the display panel 100, so that the actual optical data of the sub-pixels acquired is the brightness data of the sub-pixels of various colors in the white picture (all the sub-pixels emit light), thereby ensuring the accuracy of data acquisition; and then obtaining the compensation optical data of the sub-pixels according to the actual optical data, wherein the compensation optical data is the brightness data of the sub-pixels needing to be compensated in the white picture, so that the brightness of the white picture is adjusted through the compensation optical data, and the compensation optical data is the brightness data of the white picture needing to be compensated actually, so that the white picture after brightness adjustment has uniform display brightness, and no white picture color cast occurs, thereby improving the uniformity of image picture display.

The second embodiment of the present invention relates to a display panel 200, and is substantially the same as the first embodiment, and mainly differs therefrom in that: in the second embodiment, as shown in fig. 3, the second region 2 includes a third sub-region 23 and a fourth sub-region 24 which are not adjacent to each other, and a fifth sub-region 25 and a sixth sub-region 26 which connect the third sub-region 23 and the fourth sub-region 24, and the third sub-region 23, the fourth sub-region 24, the fifth sub-region 25 and the sixth sub-region 26 together enclose a ring-shaped structure which surrounds the first region 1.

Specifically, the driving circuit 20 is disposed in the third sub-region 23 and the fourth sub-region 24; the shortest distance from the driver circuit 20 in the third sub-area 23 to the first area 1 is equal to the shortest distance from the driver circuit 20 in the fourth sub-area 24 to the first area 1. Further, as shown in fig. 3, the third and fourth sub-regions 23 and 24 are disposed on the upper and lower sides of the first region 1, and the fifth and sixth sub-regions 25 and 26 are disposed on the left and right sides of the first region 1. In this way, it is possible to ensure that the TFT characteristics of the drive circuits 20 in the third and fourth sub-regions 23 and 24 are consistent, and the light emission luminance of the light-emitting cells 10 in the first region 1 connected to the drive circuits 20 in any sub-region is consistent, thereby avoiding the display luminance unevenness of the display panel 200 and improving the uniformity of the image display.

It can be understood that the present embodiment can achieve the same technical effects as the first embodiment, and the related technical details mentioned in the first embodiment are still valid in the present embodiment, and are not described herein again in order to reduce the repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the first embodiment.

A third embodiment of the present invention relates to a display device 300 including the display panel 30 and the photosensitive element 40 in the above embodiments, the display panel 30 including a first region 301 and a second region 302, the photosensitive element 40 located below the first region 301, a plurality of first light emitting units 3011 provided in the first region 301; the second region 302 is adjacent to the first region 301, and a plurality of driving circuits 3021 are provided in the second region 302; the driving circuits 3021 are connected in one-to-one correspondence with the first light emitting units 3011, and the shortest distance from each driving circuit 3021 to the first region 301 is equal.

Specifically, the photosensitive element 40 includes a first photosensitive region 401 and a second photosensitive region 402, and an orthogonal projection of the first photosensitive region 401 on the display panel 30 is located in the first region 301. By the arrangement of the structure, the first photosensitive area 401 of the photosensitive element 40 is used for capturing short-wavelength signals, the second photosensitive area 402 is used for capturing long-wavelength signals, and the photosensitive element 40 combines the signals captured by the first photosensitive area 401 and the second photosensitive area 402 to obtain required full-color image information, so that the information acquisition efficiency of the photosensitive element 40 is higher.

It should be understood that this embodiment is an example of the apparatus corresponding to the first embodiment, and may be implemented in cooperation with the first embodiment. The related technical details mentioned in the first embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the first embodiment.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.

Claims

1. A display panel, comprising: the light-emitting device comprises a first area and a second area, wherein the transmittance of the first area is greater than that of the second area, and a plurality of first light-emitting units are arranged in the first area;

the second area is adjacent to the first area, and a plurality of driving circuits are arranged in the second area;

the driving circuits are connected with the first light-emitting units in a one-to-one corresponding mode, and the shortest distance from each driving circuit to the first area is equal, so that the manufacturing environment of each driving circuit is consistent.

2. The display panel according to claim 1, wherein the second region includes a first sub-region and a second sub-region that are not adjacent to each other, and the first region is sandwiched between the first sub-region and the second sub-region.

3. The display panel according to claim 2, wherein the shortest distance from the driver circuit in the first sub-region to the first region is equal to the shortest distance from the driver circuit in the second sub-region to the first region.

4. The display panel according to claim 1, wherein the second region comprises a third sub-region and a fourth sub-region which are not adjacent to each other, and a fifth sub-region and a sixth sub-region which connect the third sub-region and the fourth sub-region, and the third sub-region, the fourth sub-region, the fifth sub-region and the sixth sub-region together form a ring structure, and the ring structure surrounds the first region.

5. The display panel according to claim 4, wherein the driving circuit is provided in the third sub-region and the fourth sub-region; the shortest distance from the driving circuit in the third sub-area to the first area is equal to the shortest distance from the driving circuit in the fourth sub-area to the first area.

6. The display panel according to claim 1, wherein the light emitting unit includes a blue sub-pixel, a red sub-pixel, and a green sub-pixel; the driving circuit comprises a blue sub-pixel circuit, a red sub-pixel circuit and a green sub-pixel circuit, wherein the blue sub-pixel circuit is connected with the blue sub-pixel, the red sub-pixel circuit is connected with the red sub-pixel, and the green sub-pixel circuit is connected with the green sub-pixel.

7. The display panel according to claim 6, wherein the shortest distances from the plurality of blue sub-pixel circuits to the first region are equal; the shortest distances from the plurality of red sub-pixel circuits to the first area are equal; the shortest distances from the plurality of green sub-pixel circuits to the first region are equal.

8. The display panel according to any one of claims 1 to 7, wherein a second light-emitting unit is provided in the second region, and the driving circuit includes a first driving circuit and a second driving circuit; the first driving circuits are connected with the first light emitting units in a one-to-one correspondence mode, and the second driving circuits are connected with the second light emitting units.

9. The display panel according to claim 8, wherein the display panel further comprises a plurality of traces, and the first driving circuit is connected to the first light emitting unit via the traces; the second driving circuit is connected with the routing line and the second light emitting unit through the routing line.

10. A display device comprising the display panel according to any one of claims 1 to 9, and further comprising a photosensitive element located below the first region of the display panel.

11. The display device according to claim 10, wherein the photosensitive element comprises a first photosensitive area and a second photosensitive area, and an orthographic projection of the first photosensitive area on the display panel is located in the first area.