Display panel and display device

Abstract

The present application discloses a display panel and a display device, belonging to the field of display technology. The display panel includes: a plurality of first light-emitting devices arranged in an array in a light-transmitting display area; a plurality of second light-emitting devices arranged in an array in a normal display area; a plurality of first pixel driving circuits arranged in an array and a plurality of second pixel driving circuits arranged in an array in the normal display area; and a plurality of first drive signal lines and a plurality of second drive signal lines, wherein one first drive signal line is electrically connected to the first pixel driving circuit in the same column, and one second drive signal line is electrically connected to the second pixel driving circuit in the same column; since the first drive signal line is insulated from the second drive signal line, the driver chip can independently control the first light-emitting device and the second light-emitting device to emit light, so that the light-emitting brightness of the first light-emitting device is approximately equal to the light-emitting brightness of the second light-emitting device, thereby improving the overall display effect of the display panel.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] At present, in order to provide users with a better visual experience, the display screen (also called display panel) in the display device is developing towards large-screen and full-screen. The full-screen display screen can place photosensitive devices such as cameras, infrared sensors and light sensors under the display panel.

[0003] The display panel may include: a translucent display portion and a normal display portion located outside the translucent display portion. The translucent display portion may only contain light-emitting devices, and a pixel driver circuit electrically connected to the light-emitting devices in the translucent display portion may be disposed within the normal display portion. To improve the transmittance of the translucent display portion, transparent connecting wires are typically used to connect the light-emitting devices in the translucent display portion with the pixel driver circuit in the normal display portion. This allows ambient light to penetrate the translucent display portion and enter the light-receiving surface of the photosensitive device, ensuring the normal operation of the photosensitive device even when the display device has a high screen-to-body ratio.

[0004] However, in the above-mentioned display panel, the display effect of the light-transmitting display portion is significantly different from that of the normal display portion, resulting in a poor overall display effect of the display panel. Summary of the Invention

[0005] The embodiments of the present application provide a display panel and a display device, which can improve the overall display effect of the display panel. The technical solutions are as follows:

[0006] According to one aspect of the present application, a display panel is provided, the display panel having a light-transmitting display area and a normal display area located outside the light-transmitting display area, the display panel comprising:

[0007] A plurality of first light-emitting devices arranged in an array and located in the light-transmitting display area;

[0008] a plurality of second light emitting devices arranged in an array and located in the normal display area;

[0009] a plurality of first pixel driving circuits arranged in an array and a plurality of second pixel driving circuits arranged in an array within the normal display area, wherein a column of the first pixel driving circuits is electrically connected to a column of the first light-emitting devices, and a column of the second pixel driving circuits is electrically connected to a column of the second light-emitting devices;

[0010] and a plurality of first driving signal lines and a plurality of second driving signal lines, wherein one of the first driving signal lines is electrically connected to the first pixel driving circuit in the same column, and one of the second driving signal lines is electrically connected to the second pixel driving circuit in the same column;

[0011] The first driving signal line and the second driving signal line are insulated from each other, and the plurality of first driving signal lines and the plurality of second driving signal lines are configured to be electrically connected to a driving chip.

[0012] Optionally, the display panel further has: a winding area located between the light-transmitting display area and the normal display area, some of the multiple second driving signal lines have a winding portion, the winding portion is located in the winding area, and the winding portion is insulated from the first pixel driving circuit.

[0013] Optionally, the second driving signal line having the winding portion further comprises: a first connection portion electrically connected to one end of the winding portion, and a second connection portion electrically connected to the other end of the winding portion;

[0014] The first connecting portion is electrically connected to each second pixel driving circuit in a column of the second pixel driving circuits located on one side of the light-transmitting display area; the second connecting portion is electrically connected to each second pixel driving circuit in a column of the second pixel driving circuits located on the other side of the light-transmitting display area.

[0015] Optionally, the plurality of first drive signal lines include: two drive signal line groups, wherein the first drive signal lines in one drive signal line group are arranged on one side of the light-transmitting display area, and the first drive signal lines in the other drive signal line group are arranged on the other side of the light-transmitting display area;

[0016] The second driving signal line having the winding portion is arranged between the two driving signal line groups.

[0017] Optionally, the display panel further includes: a first reset signal line electrically connected to the first pixel driving circuits in the same row, and a second reset signal line electrically connected to the second pixel driving circuits in the same row;

[0018] The first reset signal line and the second reset signal line are insulated from each other.

[0019] Optionally, the display panel also has a non-display area located outside the normal display area, and the display panel also includes: a first reset signal line bus and a second reset signal line bus located in the non-display area, the first reset signal line is electrically connected to the first reset signal line bus, and the second reset signal line is electrically connected to the second reset signal line bus.

[0020] Optionally, the first pixel driving circuit has two reset signal terminals, and the number of first reset signal lines electrically connected to the first pixel driving circuit in the same row is two. The two first reset signal lines are insulated, and one first reset signal line is electrically connected to a reset signal terminal of each first pixel driving circuit in the same row, and the other first reset signal line is electrically connected to another reset signal terminal of each first pixel driving circuit in the same row.

[0021] Optionally, the second pixel driving circuit has two reset signal terminals, and the number of second reset signal lines electrically connected to the second pixel driving circuit in the same row is two. The two second reset signal lines are insulated, and one second reset signal line is electrically connected to a reset signal terminal of each second pixel driving circuit in the same row of the second pixel driving circuit, and the other second reset signal line is electrically connected to another reset signal terminal of each second pixel driving circuit in the same row of the second pixel driving circuit.

[0022] Optionally, the display panel further includes: a plurality of transparent connecting lines, and a column of the first pixel driving circuits is electrically connected to a column of the first light-emitting devices through the transparent connecting lines.

[0023] Optionally, the display panel further comprises: a plurality of array-arranged dummy pixel driving circuits located in the normal display area, wherein the dummy pixel driving circuits are insulated from signal lines in the display panel;

[0024] The pixel driving circuits in the normal display area include a plurality of first-type pixel driving circuits and a plurality of second-type pixel driving circuits, wherein the plurality of first-type pixel driving circuits include: a plurality of the first pixel driving circuits and a plurality of the dummy pixel driving circuits, and the plurality of second-type pixel driving circuits include: a plurality of the second pixel driving circuits;

[0025] The plurality of first-type pixel driving circuits and the plurality of second-type pixel driving circuits are evenly distributed in the normal display area, and a plurality of columns of the first-type pixel driving circuits and a plurality of columns of the second-type pixel driving circuits are staggered.

[0026] Optionally, the ratio of the number of columns of the second-type pixel driving circuits to the number of columns of the first-type pixel driving circuits is 3:1.

[0027] According to another aspect of the present application, a display device is provided, comprising: a photosensitive device and the above-mentioned display panel, wherein the photosensitive device is located on a side opposite to the display surface of the display panel, and the orthographic projection of the light-receiving surface of the photosensitive device on the display panel is located within the light-transmitting display area.

[0028] The beneficial effects of the technical solutions provided in the embodiments of the present application include at least:

[0029] A display panel is provided, comprising: a plurality of first light-emitting devices located in a light-transmitting display area, a plurality of second light-emitting devices located in a normal display area, a plurality of first pixel driving circuits and a plurality of second pixel driving circuits, and a plurality of first drive signal lines and a plurality of second drive signal lines. Because the first drive signal lines and the second drive signal lines are insulated, a driver chip can control the plurality of first light-emitting devices solely through the plurality of first drive signal lines, and can control the plurality of second light-emitting devices solely through the plurality of second drive signal lines. In this way, the driver chip can compensate for the electrical signals loaded on the first drive signal lines independently, so that the luminance of the first light-emitting devices is approximately equal to the luminance of the second light-emitting devices, thereby effectively reducing the difference between the display effect of the light-transmitting display area and the display effect of the normal display area, thereby improving the overall display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] Figure 1 This is a common wiring diagram of the pixel driving circuit of a display panel;

[0032] Figure 2 yes Figure 1 The effect diagram of the display panel displaying the picture is shown;

[0033] Figure 3 is a top view of a display panel provided in an embodiment of the present application;

[0034] Figure 4 yes Figure 3 A partial enlarged view of the display panel is shown;

[0035] Figure 5 This is a schematic diagram of the first light-emitting device provided in an embodiment of the present application being electrically connected to the corresponding first pixel driving circuit;

[0036] Figure 6 is a schematic diagram of the electrical connection between the second light-emitting device and the corresponding second pixel driving circuit provided in an embodiment of the present application;

[0037] Figure 7 is a schematic structural diagram of a second driving signal line having a winding portion provided in an embodiment of the present application;

[0038] Figure 8 yes Figure 3 A schematic diagram showing the distribution of a pixel driving circuit of a display panel is shown;

[0039] Figure 9 yes Figure 3 A schematic diagram showing the connection between the reset signal line and the driving circuit in the display panel is shown;

[0040] Figure 10 is a circuit diagram of a first pixel driving circuit provided in an embodiment of the present application;

[0041] Figure 11 is a circuit diagram of a second pixel driving circuit provided in an embodiment of the present application;

[0042] Figure 12 This is a schematic diagram of the connection between a reset signal bus and a driver chip provided in an embodiment of the present application;

[0043] Figure 13 is a structural schematic diagram of a display device provided in an embodiment of the present application;

[0044] Figure 14 yes Figure 13 A cross-sectional view of the display device taken along line DD' is shown.

[0045] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0046] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0047] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0048] Please refer to Figure 1 , Figure 1This is a schematic diagram of the wiring of a pixel driver circuit for a commonly used display panel. Display panel 00 has a light-transmitting display area 0a and a normal display area 0b located outside of light-transmitting display area 0a. Display panel 00 may include: a plurality of first light-emitting devices (not labeled) arranged in an array within light-transmitting display area 0a, a plurality of second light-emitting devices (not labeled) arranged in an array within normal display area 0b, and a plurality of first pixel driver circuits 01 and a plurality of second pixel driver circuits 02 located within normal display area 0a.

[0049] Among them, a column of first pixel driving circuits 01 is electrically connected to a column of first light-emitting devices, and a column of second pixel driving circuits 02 is electrically connected to a column of second light-emitting devices. In order to ensure high light transmittance of the light-transmitting display area 0a in the display panel 00, transparent connecting lines are required to connect the first pixel driving circuits 01 located in the normal display area 0b and the first light-emitting devices located in the light-transmitting display area 0a.

[0050] Among the multiple columns of light-emitting devices in the display panel 00, for a column of light-emitting devices that includes both first and second light-emitting devices, a first drive signal line 03 is required to simultaneously connect a column of first pixel drive circuits 01 electrically connected to the first light-emitting devices in the column, and a column of second pixel drive circuits 02 electrically connected to the second light-emitting devices in the column. In this way, it is ensured that the first drive signal line 03 can simultaneously control the column of first pixel drive circuits 01 and the column of second pixel drive circuits 02, so that the column of light-emitting devices that includes both first and second light-emitting devices can be driven simultaneously by the first drive signal line 03.

[0051] Among the multiple columns of light emitting devices in the display panel 00 , for a column of light emitting devices including only second light emitting devices, a second driving signal line 04 is required to simultaneously connect a column of second pixel driving circuits 02 electrically connected to the column of second light emitting devices.

[0052] However, since the first light-emitting device and the first pixel driving circuit 01 need to be electrically connected using a transparent connecting line, and the second light-emitting device and the second pixel driving circuit 02 are directly electrically connected, there is no need to use a transparent connecting line for switching. Moreover, the resistance of the transparent connecting line is usually large, and the transparent connecting line may also generate redundant capacitance with other electrode structures. Therefore, the electrical signal loaded on the first driving signal line 03 is bound to be affected by the transparent connecting line, resulting in the luminous brightness of the column of light-emitting devices driven by the first driving signal line 03 (including both the first light-emitting device and the second light-emitting device) being different from the luminous brightness of the column of light-emitting devices driven by the second driving signal line 03 (including only the second light-emitting device). In this case, if Figure 2 As shown, Figure 2 yes Figure 1 The effect of the display panel displaying a picture is shown in the figure. The display effect of the light-transmitting display area 0a in the display panel 00 is significantly different from that of the normal display area 0b. Moreover, in the normal display area 0b, the display effect of the area 0b1 where the first drive signal line 03 is distributed is significantly different from that of the area 0b2 where the second drive signal line 04 is distributed. Ultimately, the overall display effect of the display panel 00 is poor.

[0053] Please refer to Figure 3 , Figure 3 : This is a top view of a display panel provided in an embodiment of the present application. Display panel 000 has a light-transmitting display area 00a and a normal display area 00b located outside of light-transmitting display area 00a. Here, display panel 000 can be an organic electroluminescent (OLED) display panel or an active matrix organic light-emitting diode (AM-OLED) display panel. When the display panel is an OLED display panel or an AM-OLED display panel, the display panel can be a top-emitting display panel or a bottom-emitting display panel.

[0054] To see the structure of the display panel more clearly, please refer to Figure 4 , Figure 4 yes Figure 3 The display panel 000 may include: a first light emitting device 100, a second light emitting device 200, a first pixel driving circuit 300, a second pixel driving circuit 400, a first driving signal line 500 and a second driving signal line 600. It should be noted that, Figure 4 The numbers of the first light emitting device 100 and the second light emitting device 200 are not marked in the figure, and the numbers of the first light emitting device 100 and the second light emitting device 200 will be marked in subsequent drawings.

[0055] There are multiple first light emitting devices 100 in the display panel 000 , and the multiple first light emitting devices 100 can be arranged in an array in the light-transmitting display area 00 a .

[0056] There are multiple second light emitting devices 200 in the display panel 000 , and the multiple second light emitting devices 200 can be arranged in an array in the normal display area 00 b .

[0057] There are multiple first pixel driving circuits 300 and multiple second pixel driving circuits 400 in the display panel 000, and multiple first pixel driving circuits 300 can be arranged in an array in the normal display area 00b, and multiple second pixel driving circuits 400 can also be arranged in an array in the normal display area 00b.

[0058] Among them, a column of first pixel driving circuits 300 is used to be electrically connected to a column of first light emitting devices 100. Here, each first pixel driving circuit 300 in a column of first pixel driving circuits 300 can be electrically connected to each first light emitting device 100 in a column of first light emitting devices 100 in a one-to-one correspondence. In this application, please refer to Figure 5 , Figure 5 It is a schematic diagram of the first light-emitting device provided in an embodiment of the present application being electrically connected to the corresponding first pixel driving circuit. The display panel 000 may further include: a plurality of transparent connecting lines 700. Each first light-emitting device 100 can be electrically connected to the corresponding first pixel driving circuit 300 through a transparent connecting line 700. Since the transparent connecting line 700 has good light transmittance. Therefore, when the transparent signal line 700 is arranged in the translucent display area 00a, the transparent signal line 700 has little effect on the light transmittance of the translucent display area 00a. Here, the transparent signal line 700 can generally be made of a transparent conductive material. For example, the transparent conductive material can be indium tin oxide (English: IndiumTinOxide; abbreviated as: ITO).

[0059] A column of second pixel driving circuits 400 is used to be electrically connected to a column of second light emitting devices 200. Here, each second pixel driving circuit 400 in a column of second pixel driving circuits 400 can be electrically connected to each second light emitting device 200 in a column of second light emitting devices 200 in a one-to-one correspondence. Figure 6 , Figure 6 This is a schematic diagram of the electrical connection between the second light-emitting device and the corresponding second pixel driver circuit provided in an embodiment of the present application. Because the second pixel driver circuit 400 and the second light-emitting device 200 are both located within the normal display area, the second pixel driver circuit 400 and the corresponding second light-emitting device 200 can be directly electrically connected without requiring a transparent connection trace.

[0060] The display panel 000 includes a plurality of first drive signal lines 500 and a plurality of second drive signal lines 600. One first drive signal line 500 can be connected to a column of first pixel drive circuits 300, and one second drive signal line 600 can be connected to a column of second pixel drive circuits 400. The first drive signal lines 500 corresponding to the first pixel drive circuits 300 and the second drive signal lines 600 corresponding to the second pixel drive circuits 400 are insulated from each other.

[0061] In the embodiment of the present application, the first drive signal line 500 and the second drive signal line 600 provided in the display panel 000 are insulated, and the first drive signal line 500 is electrically connected only to the first pixel drive circuit 300 and not to the second pixel drive circuit 400. The second drive signal line 600 is also electrically connected only to the second pixel drive circuit 400 and not to the first pixel drive circuit 300. Therefore, the driver chip can control the plurality of first light-emitting devices 100 solely through the plurality of first drive signal lines 500, and can control the plurality of second light-emitting devices 200 solely through the plurality of second drive signal lines 600. In this way, the driver chip can compensate for the electrical signal applied to the first drive signal line 500, so that the luminance of the first light-emitting device 100 is approximately equal to the luminance of the second light-emitting device 200. This effectively reduces the difference between the display effect of the light-transmitting display area 00a and the display effect of the normal display area 00b, thereby improving the overall display effect of the display panel 000.

[0062] In summary, the embodiment of the present application provides a display panel, comprising: a plurality of first light-emitting devices located in a light-transmitting display area, a plurality of second light-emitting devices located in a normal display area, a plurality of first pixel driving circuits and a plurality of second pixel driving circuits, and a plurality of first drive signal lines and a plurality of second drive signal lines. Since the first drive signal lines and the second drive signal lines are insulated, the driver chip can control the plurality of first light-emitting devices solely through the plurality of first drive signal lines, and can control the plurality of second light-emitting devices solely through the plurality of second drive signal lines. In this way, the driver chip can compensate for the electrical signal loaded on the first drive signal line separately, so that the luminance of the first light-emitting device is approximately equal to the luminance of the second light-emitting device, thereby effectively reducing the difference between the display effect of the light-transmitting display area and the display effect of the normal display area, so that the overall display effect of the display panel is better.

[0063] In the embodiment of the present application, the first drive signal line 500 and the second drive signal line 600 in the display panel 000 are arranged in the same layer and made of the same material. In other words, the first drive signal line 500 and the second drive signal line 600 are formed through the same patterning process. Therefore, in order to ensure that the first drive signal line 500 and the second drive signal line 600 are insulated from each other, it is necessary to ensure that the orthographic projection of the first drive signal line 500 on the substrate of the display panel 000 does not overlap with the orthographic projection of the second drive signal line 600 on the same substrate.

[0064] Optional, please refer to Figure 7 , Figure 7Schematic diagram of the structure of a second driving signal line with a winding portion provided by an embodiment of the present application. The display panel 000 also has: a winding area ( Figure 7 (not marked in the figure), some of the second driving signal lines 600 have a winding portion 601. The winding portion 601 of each second driving signal line 600 can be located within the winding area, and the winding portion 601 is insulated from the first pixel driving circuit 300. Thus, the winding portion 601 is not electrically connected to the first pixel driving circuit 300, so that the second driving signal line 600 can only drive the second pixel driving circuit 400 to operate, and cannot drive the first pixel driving circuit 300 to operate.

[0065] Exemplarily, the second drive signal line 600 having a winding portion 601 in the display panel 000 further comprises: a first connection portion 602 electrically connected to one end of the winding portion 601, and a second connection portion 603 electrically connected to the other end of the winding portion 601. The first connection portion 602 is electrically connected to each second pixel drive circuit 400 in a column of second pixel drive circuits 400 located on one side of the light-transmitting display area; and the second connection portion 603 is electrically connected to each second pixel drive circuit 400 in a column of second pixel drive circuits 400 located on the other side of the light-transmitting display area. In the present application, by disposing the winding portion 601 in the second drive signal line 600 within the winding area, it is possible to ensure that the second drive signal line 600 can drive each second pixel drive circuit 400 in a column of second pixel drive circuits 400 through the first connection portion 602 and the second connection portion 603 while ensuring high light transmittance of the light-transmitting display area 00a.

[0066] In this case, since a single second driving signal line 600 is formed by the connection of the first connecting portion 602, the winding portion 601, and the second connecting portion 603, the second driving signal line 600 is insulated from the first pixel driving circuit 300. Therefore, when the second driving signal line 600 controls the column of second light-emitting devices 200, it is not affected by the first pixel driving circuit 300, so that the brightness of the second light-emitting devices 200 in the column can be approximately the same as the brightness of the other light-emitting devices.

[0067] In the embodiment of the present application, since a second drive signal line 600 can be connected to the same column of second pixel drive circuits located on both sides of the light-transmitting display area through a winding portion 601, the second drive signal line 600 is insulated from the first pixel drive circuit 300, so that the second drive signal line 600 is only electrically connected to the second pixel drive circuit 400, and is not electrically connected to the first pixel drive circuit 300; and, for the second drive signal lines 600 that are not provided with a winding portion 601 (that is, the second drive signal lines 600 located on both sides of the light-transmitting display area 00a), they are also insulated from the first pixel drive circuit 300, and these second drive signal lines 600 are also electrically connected only to the second pixel drive circuit 400. In this way, the second driving signal line 600 with the winding portion 601 and the second driving signal line 600 without the winding portion 601 will not be affected by the first pixel driving circuit 300 when controlling the second light-emitting device 200, so that the luminous brightness of each second light-emitting device 200 is approximately the same, thereby effectively reducing the difference between the display effects of the normal display area 00b, so that the overall display effect of the display panel 000 is better.

[0068] Optionally, the plurality of first drive signal lines 500 include: two drive signal line groups, wherein the first drive signal lines 500 in one drive signal line group are arranged on one side of the light-transmitting display area 00a, and the first drive signal lines 500 in the other drive signal line group are arranged on the other side of the light-transmitting display area 00a; wherein the second drive signal line 600 having a winding portion 601 is arranged between the two drive signal line groups.

[0069] In this case, the multiple first drive signal lines 500 in the display panel 000 can be divided into two drive signal line groups, one arranged on either side of the light-transmitting display area 00a. This allows the multiple columns of first pixel drive circuits 300 electrically connected to these first drive signal lines 500 to be evenly distributed on either side of the light-transmitting display area 00a, resulting in a uniform distribution of the multiple columns of first pixel drive circuits 300 within the normal display area 00b. Furthermore, the first drive signal lines 500 arranged within the normal display area 00b are only electrically connected to the corresponding first pixel drive circuits 300 and are insulated from the second pixel drive circuits 400. Therefore, by separately compensating the electrical signals applied to the first drive signal lines 500, the brightness of the first light-emitting devices 300 controlled by the first drive signal lines 500 and the first pixel drive circuits 300 can be approximately equal to the brightness of the second light-emitting devices 200 controlled by the second drive signal lines 600 and the second pixel drive circuits 400, resulting in a better overall display effect for the display panel 000.

[0070] Optional, please refer to Figure 8 , Figure 8 yes Figure 3 Schematic diagram of the distribution of the pixel driving circuit of the display panel shown. The display panel 000 also includes: a plurality of array-arranged virtual pixel driving circuits 800 located in the normal display area, and the virtual pixel driving circuits 800 are insulated from the signal lines in the display panel 000. For example, the virtual driving circuits 800 provided in the display panel 000 are not only insulated from the first driving signal line 500 and the second driving signal line 600, but are also insulated from other signal lines in the display panel (for example, gate lines and reset signal lines, etc.). In addition, the virtual pixel driving circuits 800 in the display panel 000 are neither electrically connected to the first light-emitting device 100 nor to the second light-emitting device 200.

[0071] In the embodiment of the present application, the dummy pixel driving circuit 800, the first pixel driving circuit 300, and the second pixel driving circuit 400 in the display panel 000 can be arranged on the same layer. Furthermore, the area of the orthographic projection of the dummy pixel driving circuit 800 on the substrate of the display panel 000 is the same as the area of the orthographic projection of the first pixel driving circuit 300 on the substrate, and the same as the area of the orthographic projection of the second pixel driving circuit 400 on the substrate. Thus, by providing a plurality of array-arranged dummy pixel driving circuits 800 in the normal display area 00b, the various pixel driving circuits provided in the normal display area 00b can be evenly distributed, thereby simplifying the difficulty of manufacturing these pixel driving circuits.

[0072] Optional, continue to refer to Figure 8 The pixel driving circuits in the normal display area 00b include multiple first-type pixel driving circuits 900 and multiple second-type pixel driving circuits 1000. The multiple first-type pixel driving circuits include: multiple first pixel driving circuits 300 and multiple virtual pixel driving circuits 800. The multiple second-type pixel driving circuits 1000 include: multiple second pixel driving circuits 400. Among them, the multiple first-type pixel driving circuits 900 and the multiple second-type pixel driving circuits 1000 are evenly distributed in the normal display area, and multiple columns of first-type pixel driving circuits 900 and multiple columns of second-type pixel driving circuits 1000 are staggered.

[0073] It should be noted that, since the area of the transparent display area 00a in the display panel is smaller than the area of the normal display area 00b, the number of the first light-emitting devices 100 is less than the number of the second light-emitting devices 200, so that the number of the first type of pixel driving circuits 900 is also less than the second type of pixel driving circuits 1000. For example, continue to refer to Figure 8 The ratio of the number of columns of the second type pixel driving circuits 1000 to the number of columns of the first type pixel driving circuits 900 is 3:1, that is, one column of the first type pixel driving circuit 900 is added next to every three columns of the second type pixel driving circuits 1000.

[0074] It should be noted that the embodiment of the present application is schematically described by taking the light-transmitting display area 00a as a circle as an example. In other optional implementations, the light-transmitting display area 00a can also be a square, hexagonal, etc., and the embodiment of the present application is not limited to this.

[0075] Optional, reference Figure 9 , Figure 9 yes Figure 3 A schematic diagram of the connection between the reset signal line and the driving circuit in the display panel is shown. The display panel 000 also includes: a first reset signal line 1100 electrically connected to the first pixel driving circuit 300 in the same row, and a second reset signal line 1200 electrically connected to the second pixel driving circuit 400 in the same row; wherein the first reset signal line 1100 and the second reset signal line 1200 are insulated. In this case, since the first reset signal line 1100 connected to the first pixel driving circuit 300 is insulated from the second reset signal line 1200 connected to the second pixel driving circuit 400, the first pixel driving circuit 300 can be reset separately through the first reset signal line 1100, and the second pixel driving circuit 400 can be reset separately through the second reset signal line 1200, which can further reduce the difference between the display effect of the light-transmitting display area 00a and the display effect of the normal display area 00b.

[0076] In the embodiment of the present application, the first reset signal line 1100 and the second reset signal line 1200 in the display panel 000 are disposed in the same layer and made of the same material. That is, the first reset signal line 1100 and the second reset signal line 1200 are formed through the same patterning process. Therefore, to ensure that the first reset signal line 1100 and the second reset signal line 1200 are insulated from each other, it is necessary to ensure that the orthographic projection of the first reset signal line 1100 on the substrate of the display panel 000 does not overlap with the orthographic projection of the second reset signal line 1200 on the same substrate.

[0077] For example, continue to refer to Figure 9 , there are multiple first reset signal lines 1100 in the display panel 000; wherein, the first pixel driving circuit 300 has two reset signal terminals, and the number of first reset signal lines electrically connected to the first pixel driving circuits in the same row is two (the first reset signal line 1101 and the first reset signal line 1102), the two first reset signal lines are insulated, and one first reset signal line is electrically connected to one reset signal terminal of each first pixel driving circuit in the same row, and the other first reset signal line is electrically connected to the other reset signal terminal of each first pixel driving circuit in the same row.

[0078] It should be noted that the independent first reset signal line 1101 can use a positive voltage to reduce the over-reset of the capacitor, ensuring the capacitor charging rate of the transparent display area 00a; the independent first reset signal line 1102 can use a positive voltage to pre-charge the parasitic capacitance on the TFT to anode line, ensuring that the luminous brightness of the transparent display area 00a is consistent with that of the normal display area 00b.

[0079] For example, continue to refer to Figure 9 , there are multiple second reset signal lines 1200 in the display panel 000; wherein, the second pixel driving circuit 400 has two reset signal terminals, and the number of second reset signal lines electrically connected to the second pixel driving circuits in the same row is two (the second reset signal line 1201 and the second reset signal line 1202), the two second reset signal lines are insulated, and one second reset signal line is electrically connected to one reset signal terminal of each second pixel driving circuit in the second pixel driving circuits in the same row, and the other second reset signal line is electrically connected to the other reset signal terminal of each second pixel driving circuit in the second pixel driving circuits in the same row.

[0080] In the embodiment of the present application, since each first pixel driving circuit 300 has an independent first driving signal line 500 and two independent first reset signal lines 1101 and 1102, and each second pixel driving circuit 400 has an independent second driving signal line 600 and two independent second reset signal lines 1201 and 1202, the driving chip can compensate for both the electrical signal applied to the first driving signal line 500 and the electrical signal applied to the two first reset signal lines 1101 and 1102, thereby making the luminance of the first light-emitting device 100 approximately equal to the luminance of the second light-emitting device 200. This effectively reduces the difference between the display effect of the light-transmitting display area 00a and the display effect of the normal display area 00b, thereby improving the overall display effect of the display panel 000.

[0081] Exemplary, reference Figure 10 , Figure 10is a circuit diagram of a first pixel driving circuit provided in an embodiment of the present application. The first pixel driving circuit 300 has two reset signal terminals, Vint3 and Vint4. The reset signal terminal Vint3 can be connected to an independent first reset signal line 1101, and the reset signal terminal Vint4 can be connected to another independent first reset signal line 1102. Specifically, the first pixel driving circuit 300 may include: a first transistor T1, a second transistor T2, a driving transistor T3, a fourth transistor T4, a fifth transistor T5, a sixth transistor T6, a seventh transistor T7, and a storage capacitor C. The first transistor T1 has a first electrode connected to node N1, and a second electrode connected to the initial signal terminal Vinit3 and the reset signal terminal Reset1. The second transistor T2 has a first electrode connected to the first electrode of the driving transistor T3, a second electrode connected to node N3, and a gate connected to the gate drive signal terminal Gate. The gate of the driving transistor T3 is connected to node N2. The fourth transistor T4 has a first electrode connected to the data signal terminal Data, a second electrode connected to the second electrode of the driving transistor T3, and a gate connected to the gate drive signal terminal Gate. The fifth transistor T5 has a first electrode connected to the first power signal terminal VDD, a second electrode connected to the second electrode of the driving transistor T3, and a gate connected to the enable signal terminal EM. The sixth transistor T6 has a first electrode connected to the first electrode of the driving transistor T3, and a gate connected to the enable signal terminal EM. The seventh transistor T7 has a first electrode connected to the initial signal terminal Vinit4, a second electrode connected to the second electrode of the sixth transistor T6, a node N4, and a reset signal terminal Reset2. A storage capacitor C is connected between the gate of the driving transistor T3 and the first power signal terminal VDD. The pixel driving circuit can be connected to the light emitting device OLED to drive the light emitting device OLED to emit light. The light emitting device OLED can be connected between the second electrode of the sixth transistor T6 and the second power supply terminal VSS.

[0082] Exemplary, reference Figure 11 , Figure 11is a circuit diagram of a second pixel driving circuit provided in an embodiment of the present application. The second pixel driving circuit 400 has two reset signal terminals, Vint1 and Vint2; the reset signal terminal Vint1 can be connected to an independent second reset signal line 1201, and the reset signal terminal Vint2 can be connected to another independent second reset signal line 1202. Specifically, the second pixel driving circuit 400 may include: a first transistor T1, a second transistor T2, a driving transistor T3, a fourth transistor T4, a fifth transistor T5, a sixth transistor T6, a seventh transistor T7, and a storage capacitor C. The first transistor T1 has a first electrode connected to node N1, and a second electrode connected to the initial signal terminal Vinit1 and the reset signal terminal Reset1. The second transistor T2 has a first electrode connected to the first electrode of the driving transistor T3, a second electrode connected to node N3, and a gate connected to the gate drive signal terminal Gate. The gate of the driving transistor T3 is connected to node N2. The fourth transistor T4 has a first electrode connected to the data signal terminal Data, a second electrode connected to the second electrode of the driving transistor T3, and a gate connected to the gate drive signal terminal Gate. The fifth transistor T5 has a first electrode connected to the first power signal terminal VDD, a second electrode connected to the second electrode of the driving transistor T3, and a gate connected to the enable signal terminal EM. The sixth transistor T6 has a first electrode connected to the first electrode of the driving transistor T3, and a gate connected to the enable signal terminal EM. The seventh transistor T7 has a first electrode connected to the initial signal terminal Vinit2, and a second electrode connected to the second electrode of the sixth transistor T6, which is connected to node N4 and the reset signal terminal Reset2. A storage capacitor C is connected between the gate of the driving transistor T3 and the first power signal terminal VDD. The pixel driving circuit can be connected to the light emitting device OLED to drive the light emitting device OLED to emit light. The light emitting device OLED can be connected between the second electrode of the sixth transistor T6 and the second power supply terminal VSS.

[0083] In the embodiment of the present application, the data signal terminals of the first pixel driving circuit and the second pixel driving circuit are independent of each other, and the third and fourth reset signal terminals are also independent of the first and second reset signal terminals. Thus, the driver chip can compensate for the electrical signal applied to the first drive signal line 500, and the two reset signal terminals can also compensate for the electrical signals applied to the two first reset signal lines 1100, respectively. This further makes the luminance of the first light-emitting device 100 approximately equal to the luminance of the second light-emitting device 200, thereby effectively reducing the difference between the display effect of the light-transmitting display area 00a and the display effect of the normal display area 00b, thereby improving the overall display effect of the display panel 000.

[0084] Optional, please refer to Figure 12 , Figure 12Schematic diagram of the connection between a reset signal bus and a driver chip provided in an embodiment of the present application. The display panel 000 also has a non-display area 00c located outside the normal display area 00b, a first reset signal line bus 1300 and a second reset signal line bus (not labeled in the figure) located within the non-display area 00c, a first reset signal line 1100 electrically connected to the first reset signal line bus 1300, and a second reset signal line 1200 electrically connected to the second reset signal line bus. Multiple first reset signal lines 1100 are electrically connected to the first reset signal line bus 1300 and connected to the driver chip 1400 via the first reset signal line bus 1300. Multiple second reset signal lines 1200 are electrically connected to the second reset signal line bus and connected to the driver chip 1400 via the first reset signal line bus 1300. It should be noted that the first reset signal line bus 1300 and the second reset signal line bus are connected to a single driver chip 1400, and the single driver chip 1400 can independently send reset signals to distribute and control the first pixel driver circuit and the second pixel driver circuit.

[0085] In summary, the embodiment of the present application provides a display panel, comprising: a plurality of first light-emitting devices located in a light-transmitting display area, a plurality of second light-emitting devices in a normal display area, a plurality of first pixel driving circuits and a plurality of second pixel driving circuits, and a plurality of first drive signal lines and a plurality of second drive signal lines. Since the first drive signal lines and the second drive signal lines are insulated, the driver chip can control the plurality of first light-emitting devices solely through the plurality of first drive signal lines, and can control the plurality of second light-emitting devices solely through the plurality of second drive signal lines. In this way, the driver chip can compensate for the electrical signal loaded on the first drive signal line separately, so that the luminance of the first light-emitting device is approximately equal to the luminance of the second light-emitting device, thereby effectively reducing the difference between the display effect of the light-transmitting display area and the display effect of the normal display area, so that the overall display effect of the display panel is better.

[0086] The embodiment of the present application further provides a display device, which can be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, or the like.

[0087] For example, Figure 13 and Figure 14 As shown, Figure 13 is a structural diagram of a display device provided in an embodiment of the present application, Figure 14 yes Figure 13 The display device is shown in a cross-sectional view taken along line DD'. The display device may include a display panel 000, and the structure of the display panel 000 may be the display panel in the above embodiment.

[0088] The display device may include a light-transmitting display area 00a and a normal display area 00b. The light-transmitting display area 00a may be in a circular, elliptical, or two elliptical shapes arranged side by side, which is not limited in the present embodiment.

[0089] In an embodiment of the present application, the display device may further include a photosensitive device 001. The photosensitive device 001 may be an image sensor, a light sensor, or a distance sensor in a camera. The photosensitive device 001 is located on the side opposite the display surface of the display panel 000. The orthographic projection of the photosensitive surface 001a of the photosensitive device 001 on the display panel is located within the light-transmitting display area 00a. Due to the high light transmittance of the light-transmitting display area 00a, ambient light can pass through the light-transmitting display area 00a and enter the light-receiving surface 001a of the photosensitive device 001 normally, allowing the photosensitive device 001 to operate normally.

[0090] It should be noted that in the accompanying drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. It will also be understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be an intermediate layer. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it may be directly under the other element, or there may be more than one intermediate layer or element. In addition, it will also be understood that when a layer or element is referred to as being "between" two layers or elements, it may be the only layer between the two layers or elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0091] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless expressly limited otherwise.

[0092] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A display panel, characterized in that: The display panel has a light-transmitting display area, a normal display area located outside the light-transmitting display area, and a non-display area located outside the normal display area. The display panel includes: A plurality of first light-emitting devices arranged in an array and located in the light-transmitting display area; a plurality of second light emitting devices arranged in an array and located in the normal display area; a plurality of first pixel driving circuits arranged in an array and a plurality of second pixel driving circuits arranged in an array within the normal display area, wherein a column of the first pixel driving circuits is electrically connected to a column of the first light-emitting devices, and a column of the second pixel driving circuits is electrically connected to a column of the second light-emitting devices; a plurality of first driving signal lines and a plurality of second driving signal lines, wherein one of the first driving signal lines is electrically connected to the first pixel driving circuit in the same column, and one of the second driving signal lines is electrically connected to the second pixel driving circuit in the same column; a first reset signal line electrically connected to the first pixel driving circuit in the same row, and a second reset signal line electrically connected to the second pixel driving circuit in the same row; the first reset signal line and the second reset signal line are insulated from each other; and a first reset signal line bus and a second reset signal line bus located in the non-display area, wherein the first reset signal line is electrically connected to the first reset signal line bus, and the second reset signal line is electrically connected to the second reset signal line bus; The first drive signal line is insulated from the second drive signal line, and the plurality of first drive signal lines and the plurality of second drive signal lines are electrically connected to a driver chip, respectively; the driver chip controls the plurality of first light-emitting devices solely through the plurality of first drive signal lines, and the driver chip controls the plurality of second light-emitting devices solely through the plurality of second drive signal lines; Multiple first reset signal lines are electrically connected to the first reset signal line bus and connected to the driver chip through the first reset signal line bus. Multiple second reset signal lines are electrically connected to the second reset signal line bus and connected to the driver chip through the second reset signal line bus. The first reset signal line bus and the second reset signal line bus are connected to one driver chip. One driver chip individually sends a reset signal to the first reset signal line bus and the second reset signal line bus, and respectively controls the first pixel driving circuit and the second pixel driving circuit to reset.

2. The display panel according to claim 1, wherein: The display panel also has: a winding area located between the light-transmitting display area and the normal display area, some of the multiple second drive signal lines have winding portions, the winding portions are located in the winding area, and the winding portions are insulated from the first pixel drive circuit.

3. The display panel according to claim 2, wherein: The second driving signal line having the winding portion further comprises: a first connection portion electrically connected to one end of the winding portion, and a second connection portion electrically connected to the other end of the winding portion; The first connecting portion is electrically connected to each second pixel driving circuit in a column of the second pixel driving circuits located on one side of the light-transmitting display area; the second connecting portion is electrically connected to each second pixel driving circuit in a column of the second pixel driving circuits located on the other side of the light-transmitting display area.

4. The display panel according to claim 2, wherein: The plurality of first drive signal lines include: two drive signal line groups, wherein the first drive signal lines in one drive signal line group are arranged on one side of the light-transmitting display area, and the first drive signal lines in the other drive signal line group are arranged on the other side of the light-transmitting display area; The second driving signal line having the winding portion is arranged between the two driving signal line groups.

5. The display panel according to claim 1, wherein: The first pixel driving circuit has two reset signal terminals, and there are two first reset signal lines electrically connected to the first pixel driving circuits in the same row. The two first reset signal lines are insulated, and one first reset signal line is electrically connected to one reset signal terminal of each first pixel driving circuit in the same row, and the other first reset signal line is electrically connected to the other reset signal terminal of each first pixel driving circuit in the same row.

6. The display panel according to claim 1, wherein: The second pixel driving circuit has two reset signal terminals, and there are two second reset signal lines electrically connected to the second pixel driving circuits in the same row. The two second reset signal lines are insulated, and one second reset signal line is electrically connected to one reset signal terminal of each second pixel driving circuit in the same row, and the other second reset signal line is electrically connected to the other reset signal terminal of each second pixel driving circuit in the same row.

7. The display panel according to any one of claims 1 to 4, characterized in that: The display panel further includes: a plurality of transparent connecting lines, and a column of the first pixel driving circuits is electrically connected to a column of the first light-emitting devices through the transparent connecting lines.

8. The display panel according to any one of claims 1 to 4, characterized in that: The display panel further includes: a plurality of array-arranged dummy pixel driving circuits located in the normal display area, wherein the dummy pixel driving circuits are insulated from signal lines in the display panel; The pixel driving circuits in the normal display area include a plurality of first-type pixel driving circuits and a plurality of second-type pixel driving circuits, wherein the plurality of first-type pixel driving circuits include: a plurality of the first pixel driving circuits and a plurality of the dummy pixel driving circuits, and the plurality of second-type pixel driving circuits include: a plurality of the second pixel driving circuits; The plurality of first-type pixel driving circuits and the plurality of second-type pixel driving circuits are evenly distributed in the normal display area, and a plurality of columns of the first-type pixel driving circuits and a plurality of columns of the second-type pixel driving circuits are staggered.

9. The display panel according to claim 8, wherein: The ratio of the number of columns of the second-type pixel driving circuits to the number of columns of the first-type pixel driving circuits is 3:

1.

10. A display device, characterized in that: include: A photosensitive device and a display panel according to any one of claims 1 to 9, wherein the photosensitive device is located on a side opposite to a display surface of the display panel, and an orthographic projection of a light-receiving surface of the photosensitive device on the display panel is located within the light-transmitting display area.

Images