CN113707701B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN113707701B CN113707701B CN202111016344.8A CN202111016344A CN113707701B CN 113707701 B CN113707701 B CN 113707701B CN 202111016344 A CN202111016344 A CN 202111016344A CN 113707701 B CN113707701 B CN 113707701B
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/131—Interconnections, e.g. wiring lines or terminals
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Abstract
The application discloses a display panel and a display device, and belongs to the technical field of display. The display panel includes: a substrate, a plurality of first sub-pixels, a plurality of second sub-pixels and a plurality of first transparent connecting lines which are positioned on the substrate. The area of the orthographic projection of the first sub-pixel on the substrate is smaller than that of the orthographic projection of the second sub-pixel on the substrate, more first sub-pixels can be distributed in the first display area, PPI of the first display area is effectively improved, and the display effect of the first display area in the display panel is good. And each first sub-pixel in each sub-pixel group can be electrically connected through the first transparent connecting wire, so that the wiring density of the first transparent connecting wire is reduced, the width of the first transparent connecting wire is further larger, and the conductivity of the first transparent connecting wire is effectively improved.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
Currently, display screens (also referred to as display panels) in display devices are evolving toward larger screens and fullscreens to provide users with a better visual experience. In order to increase the screen ratio of the display device, photosensitive devices such as a camera, an infrared sensor, a light sensor, and the like may be placed under the display panel.
For example, the display panel includes: a normal display portion and a light-transmitting display portion. The normal display part and the light-transmitting display part are respectively provided with sub-Pixels, and the pixel density (PPI) of the normal display part is higher than that of the light-transmitting display part, so that ambient light can enter the light-receiving surface of the light-receiving device through the light-transmitting display part. Therefore, the photosensitive device can be ensured to work normally under the condition that the screen occupation of the display device is relatively high.
However, the PPI of the light-transmitting display portion in the display panel is low at present, which results in poor display effect of the light-transmitting display portion and thus poor overall display effect of the display panel.
Disclosure of Invention
The embodiment of the application provides a display panel and a display device, which can solve the problem of poor overall display effect of the display panel in the prior art, and the technical scheme is as follows:
in one aspect, there is provided a display panel including: a substrate having a first display region and a second display region located at the periphery of the first display region;
a plurality of first sub-pixels arranged in an array in the first display area;
a plurality of second sub-pixels arranged in an array in the second display area, wherein the area of orthographic projection of the second sub-pixels on the substrate is larger than that of orthographic projection of the first sub-pixels on the substrate;
and a plurality of first transparent connection lines located in the first display area;
the first sub-pixels in one row in the first display area comprise at least two sub-pixel groups, each first sub-pixel in the sub-pixel groups is electrically connected through the first transparent connecting wire, and each sub-pixel group is electrically connected with the second sub-pixels in the same row.
Optionally, a first target subpixel of each subpixel group, which is close to the outer boundary of the first display area, is electrically connected to the second subpixels of the same row.
Optionally, the display panel further includes: and the first target sub-pixels in at least one sub-pixel group are electrically connected with one row of the second sub-pixels through the transfer signal lines.
Optionally, the display panel further includes: the first signal connection lines are used for being electrically connected with one row of the second sub-pixels, the first target sub-pixels of one sub-pixel group in the at least two sub-pixel groups are connected with the first signal connection lines, and the first target sub-pixels of the other sub-pixel groups are connected with the first signal connection lines through the transfer signal lines.
Optionally, the transfer signal line is a signal line made of transparent conductive material.
Optionally, the plurality of first transparent connecting lines are arranged on the same layer.
Optionally, the display panel further includes: the second transparent connecting wires are arranged in the first display area, are arranged in the same layer and are arranged in different layers with the first transparent connecting wires;
each first sub-pixel in a row of the first sub-pixels in the first display area is electrically connected through the second transparent connecting wire, and a row of the first sub-pixels is electrically connected with a row of the second sub-pixels.
Optionally, the display panel further includes: the second signal connecting wires are used for being electrically connected with the second sub-pixels in the same column, and the second signal connecting wires are electrically connected with the second transparent connecting wires at the junction of the first display area and the second display area.
Optionally, the display panel further includes: a pixel defining layer for defining a plurality of first pixel regions within the first display region and a plurality of second pixel regions within the second display region;
the first subpixel includes: a first light emitting device located within the first pixel region, the second subpixel including: a second light emitting device located in the second pixel region;
the area of the first pixel area is smaller than that of the second pixel area.
Optionally, the ratio of the area of the first pixel region to the area of the second display region is 1:2.
Optionally, the pixel density of the plurality of first sub-pixels is equal to the pixel density of the plurality of second sub-pixels.
Optionally, the first subpixel further includes: and the first pixel driving circuits of any two adjacent first sub-pixels in the sub-pixel group are electrically connected through the first transparent connecting wire.
Optionally, the front projection of the first pixel driving circuit on the substrate at least partially coincides with the front projection of the first light emitting device on the substrate.
Optionally, the second subpixel further includes: and the second pixel driving circuits are electrically connected with the second light emitting devices, and each second pixel driving circuit in one row of the second sub-pixels is electrically connected through a first signal connecting wire.
In another aspect, there is provided a display device, the device including: the light-sensitive device is positioned on one side opposite to the display surface of the display panel, and the orthographic projection of the light-sensitive surface of the light-sensitive device on the substrate is positioned in the first display area.
The technical scheme provided by the embodiment of the application has the beneficial effects that at least:
a display panel includes: the display device comprises a substrate, a plurality of first sub-pixels arranged in an array, a plurality of second sub-pixels arranged in an array and a plurality of first transparent connecting wires, wherein the first sub-pixels are arranged in the array and are positioned on the substrate. Since the area of the orthographic projection of the first sub-pixel on the substrate is smaller than the area of the orthographic projection of the second sub-pixel on the substrate. Therefore, more first sub-pixels can be arranged in the first display area, so that the number of the first sub-pixels in the first display area is more, the PPI of the first display area is effectively improved, and the display effect of the first display area in the display panel is better. The first sub-pixels in the same row in the first display area can be divided into at least two sub-pixel groups, and the first sub-pixels in each sub-pixel group can be electrically connected through the first transparent connecting line. Therefore, the wiring density of the first transparent connecting wire in the first display area can be effectively reduced, so that the width of the first transparent connecting wire is larger, the conductivity of the first transparent connecting wire is further improved, and the display effect of the first display area in the display panel is further improved. Therefore, the overall display effect of the display panel can be guaranteed to be good.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a partial enlarged view of a display panel commonly used at present;
FIG. 2 is a schematic diagram of the connection of a row of first sub-pixels in a first display area of the display panel shown in FIG. 1;
FIG. 3 is a top view of a display panel according to an embodiment of the present application;
fig. 4 is a partial enlarged view of the display panel at a shown in fig. 3;
FIG. 5 is a schematic diagram of the connection of a row of first sub-pixels in a first display area of the display panel shown in FIG. 3;
FIG. 6 is a schematic diagram showing a connection between a row of first sub-pixels and a row of second sub-pixels in a first display area of the display panel shown in FIG. 3;
FIG. 7 is a schematic diagram showing the connection of a plurality of first sub-pixels in the first display area shown in FIG. 3;
FIG. 8 is a schematic view of the film structure of the display panel at B-B' shown in FIG. 7;
FIG. 9 is another schematic diagram of a connection of a row of first sub-pixels and a row of second sub-pixels in a first display area of the display panel shown in FIG. 3;
FIG. 10 is a schematic view of a film structure at C-C' of the display panel shown in FIG. 9;
fig. 11 is a circuit diagram of a pixel driving circuit provided in an embodiment of the present application;
fig. 12 is a schematic structural diagram of a display device according to an embodiment of the present application;
fig. 13 is a sectional view of the display device shown in fig. 12 at D-D'.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a partial enlarged view of a display panel in the prior art. The display panel has a first display area 00a and a second display area 00b located at the periphery of the first display area 00a. The portion of the display panel where the first display region 00a is located may be referred to as a light-transmitting display portion, and the portion of the display panel where the second display region 00b is located may be referred to as a normal display portion.
The display panel may include: a plurality of first sub-pixels 01 arranged in an array in the first display area 00a, and a plurality of second sub-pixels 02 arranged in an array in the second display area 00b. Here, the display panel may further include: the substrate 03, a plurality of first sub-pixels 01 and a plurality of second sub-pixels 02 are each located on the substrate 03. Wherein the area of the orthographic projection of the first sub-pixel 01 on the substrate 03 is equal to the area of the orthographic projection of the second sub-pixel 02 on the substrate 03.
In order to ensure that the first display area 00a in the display panel has a high transmittance to ambient light, the number of first sub-pixels 01 in the first display area 00a needs to be reduced. Thus, the PPI of the first display 00a is smaller than the PPI of the second display 00b. Therefore, the first display area 00a has a poor display effect, resulting in a poor overall display effect of the display panel.
As shown in fig. 2, fig. 2 is a schematic diagram of connection of a row of first sub-pixels in a first display area of the display panel shown in fig. 1. In order to further increase the transmittance of the first display area 00a to ambient light, it is necessary to electrically connect every two adjacent first sub-pixels 01 in a row of first sub-pixels 01 by using a transparent connection line 04.
In order to ensure that each first sub-pixel 01 in the first sub-pixels 01 in the same row can access a plurality of different signals, it is necessary to ensure that any two adjacent first sub-pixels 01 are electrically connected through a plurality of transparent connection lines 04. However, when each first sub-pixel 01 in a row of first sub-pixels 01 is electrically connected by the transparent connection line 04, in the case where any two adjacent first sub-pixels 01 are electrically connected by a plurality of transparent connection lines 04, the wiring density of the transparent connection lines 04 in the first display area 00a is large. As such, the smaller width of the transparent connection line 04 results in a larger resistance of the transparent connection line 04, which in turn results in a poorer signal transmission capability of the transparent connection line 04. In this way, the display effect of the first display area 00a is further reduced.
Referring to fig. 3 and 4, fig. 3 is a top view of a display panel according to an embodiment of the application, and fig. 4 is a partial enlarged view of a portion of the display panel shown in fig. 3 at a. The display panel 000 may be an organic electroluminescence (English: organic Light Emitting Display; OLED for short) display panel or an Active Matrix organic light emitting diode (English: active Matrix/Organic Light Emitting Diode; AM-OLED for short) display panel. When the display panel 000 is an OELD display panel or an AM-OLED display panel, the display panel 000 may be a top emission type display panel or a bottom emission type display panel.
The display panel 000 may include: a substrate 100, a plurality of first sub-pixels 200 arranged in an array, a plurality of second sub-pixels 300 arranged in an array, and a plurality of first transparent connection lines 400 on the substrate 100. It should be noted that, the numbers of the plurality of first transparent connection lines 400 are not shown in fig. 3 and 4, but are shown in fig. 5 hereinafter.
The substrate 100 has a first display region 100a and a second display region 100b located at the periphery of the first display region 100 a. Among them, a portion of the display panel 000 where the first display region 100a is located may be referred to as a light-transmitting display portion, and a portion of the display panel 000 where the second display region 100b is located may be referred to as a normal display portion.
The plurality of first sub-pixels 200 arranged in an array in the display panel 000 may be located in the first display area 100a, and the plurality of second sub-pixels 300 arranged in an array in the display panel 000 may be located in the second display area 100b.
Wherein the area of the orthographic projection of the second sub-pixel 300 on the substrate 100 is larger than the area of the orthographic projection of the first sub-pixel 200 on the substrate 100. In this way, the area of the orthographic projection of the first sub-pixel 200 on the substrate 100 is smaller, so that the number of the first sub-pixels 200 in the first display area 100a in the display panel 000 is larger, the PPI of the first display area 100a is effectively improved, and the display effect of the first display area 100a in the display panel 000 is better.
By way of example, the plurality of first sub-pixels 200 within the first display area 100a may include: red, green and blue sub-pixels R1, G1 and B1; the plurality of second sub-pixels 300 within the second display area 100b may include: red subpixel R2, green subpixel G2, and blue subpixel B2. The area of the orthographic projection of the first sub-pixel 200 on the substrate 100 is smaller than the area of the orthographic projection of the second sub-pixel 300 on the substrate 100 in the present application means that: the area of the orthographic projection of a subpixel of a certain color in the first display area 100a on the substrate 100 is smaller than the area of the orthographic projection of a subpixel of the same color in the second display area 100b on the substrate 100. For example, the area of the orthographic projection of the red subpixel R1 in the first display area 100a onto the substrate 100 is smaller than the area of the orthographic projection of the red subpixel R2 in the second display area 100b onto the substrate 100.
In an embodiment of the present application, as shown in fig. 5, fig. 5 is a schematic diagram illustrating connection of a row of first sub-pixels in a first display area of the display panel shown in fig. 3. The plurality of first transparent connection lines 400 in the display panel 000 may be located within the first display area 100 a. Wherein, a row of first sub-pixels 200 in the first display area 100a includes: at least two sub-pixel groups 200a. The respective first sub-pixels 200 within each sub-pixel group 200a of the at least two sub-pixel groups 200a may be electrically connected by a first transparent connection line 400. For example, within the same sub-pixel group 200a, every two adjacent first sub-pixels 200 may be electrically connected by at least one first transparent connection line 400. Alternatively, the first transparent connection line 400 may be made of a transparent conductive material such as smoke-Tin-Oxide (ITO). In this way, the light transmittance of the first display area 100a can be ensured to be high.
As shown in fig. 6, fig. 6 is a schematic diagram of connection between a row of first sub-pixels and a row of second sub-pixels in the first display area of the display panel shown in fig. 3. Each of the sub-pixel groups 200a of the at least two sub-pixel groups 200a may be electrically connected to the second sub-pixels 300 of the same row. For example, each sub-pixel group 200a may be electrically connected to the second sub-pixels 300 in the same row at the boundary of the display area 100 a. In this way, it is ensured that a row of the first sub-pixels 200 in the first display area 100a and a row of the second sub-pixels 300 in the second display area 100b are electrically connected, so that a plurality of the first sub-pixels 200 in the first display area 100a and a plurality of the second sub-pixels 300 in the second display area 100b can emit light under the driving of the same driving chip.
In this case, the respective first sub-pixels 200 in the same row of the first sub-pixels 200 in the first display area 100a are not directly electrically connected through the first transparent connection line 400, but a row of the first sub-pixels 200 are grouped to obtain at least two sub-pixel groups 200a, and the respective first sub-pixels 200 in each sub-pixel group 200a are electrically connected through the first transparent connection line 400. In this way, the wiring density of the first transparent connection line 400 in the first display area 100a can be effectively reduced, so that the width of the first transparent connection line 400 is larger, and the conductivity of the first transparent connection line 400 is further improved, thereby further improving the display effect of the first display area in the display panel 000.
In summary, the display panel provided in the embodiment of the application includes: the display device comprises a substrate, a plurality of first sub-pixels arranged in an array, a plurality of second sub-pixels arranged in an array and a plurality of first transparent connecting wires, wherein the first sub-pixels are arranged in the array and are positioned on the substrate. Since the area of the orthographic projection of the first sub-pixel on the substrate is smaller than the area of the orthographic projection of the second sub-pixel on the substrate. Therefore, more first sub-pixels can be arranged in the first display area, so that the number of the first sub-pixels in the first display area is more, the PPI of the first display area is effectively improved, and the display effect of the first display area in the display panel is better. The first sub-pixels in the same row in the first display area can be divided into at least two sub-pixel groups, and the first sub-pixels in each sub-pixel group can be electrically connected through the first transparent connecting line. Therefore, the wiring density of the first transparent connecting wire in the first display area can be effectively reduced, so that the width of the first transparent connecting wire is larger, the conductivity of the first transparent connecting wire is further improved, and the display effect of the first display area in the display panel is further improved. Therefore, the overall display effect of the display panel can be guaranteed to be good.
The pixel arrangement of the display panel 000 in the embodiment of the present application is RBGG. That is, as shown in fig. 3, one red sub-pixel R1, one blue sub-pixel B1, and two green sub-pixels G1 in the first display area 100a in the display panel 000 can constitute one pixel; one red sub-pixel R2, one blue sub-pixel B2, and two green sub-pixels G2 in the second display area 100B in the display panel 000 can constitute one pixel.
Alternatively, when the pixel arrangement of the display panel 000 is RBGG, as shown in fig. 4, each row of the first sub-pixels 200 may be divided into two sub-pixel groups 200a in the first display area 100a of the display panel 000. One of the two sub-pixel groups 200a includes a red sub-pixel R1 and a blue sub-pixel B1 in a row of the first sub-pixel 200, and the other includes a green sub-pixel G1 in a row of the sub-pixels 200.
In the embodiment of the present application, as shown in fig. 6, in a row of first sub-pixels 200 in the first display area 100a, the first target sub-pixels in each sub-pixel group 200a near the outer boundary of the first display area 100a are electrically connected to the second sub-pixels 300 in the same row. In this way, it is ensured that each sub-pixel group 200a in a row of first sub-pixels 200 can access the same row of second sub-pixels 300, so that a row of first sub-pixels 200 can be electrically connected to a row of second sub-pixels 300.
Optionally, as shown in fig. 6, the display panel 000 may further include: a plurality of switching signal lines 500. The first target subpixel among the at least one subpixel group 200a within a row of the first subpixels 200 may be electrically connected to a row of the second subpixels 300 through the transfer signal line 500.
By way of example, the display panel 000 may further include: a plurality of first signal connection lines 600. One of the first signal connection lines 600 is used for electrically connecting with one row of the second sub-pixels 300. For example, each of the second sub-pixels 300 in a row of the second sub-pixels 300 may be connected in series through at least one first signal connection line 600. For at least two sub-pixel groups 200a in the first sub-pixel 200 of the same row, the first target sub-pixel of one sub-pixel group 200 of the at least two sub-pixel groups 200a may be directly electrically connected to the first signal connection line 600, and the first target sub-pixel of the other sub-pixel groups 200a may be electrically connected to the first signal connection line 600 through the transfer signal line 500.
In this case, when the first target subpixel of the subpixel group 200a is directly electrically connected to the first signal connection line 600, the first target subpixel of the subpixel group 200a may be connected in series with each of the second subpixels 300 of the row of second subpixels 300 through the first signal connection line 600; when the first target subpixel of the subpixel group 200a is electrically connected to the first signal connection line 600 through the transfer signal line 500, the first target subpixel of the subpixel group 200a may be connected in series with each of the second subpixels 300 of the row of second subpixels 300 through the transfer signal line 500 and the first signal connection line 600. Thus, the signal transmitted in the first signal connection line 600 is split at the junction between the first display area 100a and the second display area 100b, so as to transmit the signal to each sub-pixel group 200a in the first sub-pixel 200 in a row.
Note that, there are two connection modes between the transit signal line 500 and the first signal connection line 600. In the first case, the transit signal line 500 may be directly electrically connected to the first signal connection line 600. In this case, since the conductive layer where the transit signal line 500 is located and the conductive layer where the first signal connection line 600 is located are not generally the same conductive layer, an insulating layer is generally present therebetween, and thus the transit signal line 500 may be electrically connected to the first signal connection line 600 through the via hole V1.
In the second case, the switching signal line 500 may be electrically connected to the first transparent connection line 400, and since the first transparent connection line 400 may be electrically connected to the first signal connection line 600 through the first target sub-pixel, the electrical connection between the switching line 500 and the first signal connection line 600 may be realized after the switching line 500 is electrically connected to the first transparent connection line 400. In this case, since the conductive layer where the transit signal line 500 is located and the conductive layer where the first transparent connection line 400 is located are not generally the same conductive layer, an insulating layer is generally present therebetween, and thus the transit signal line 500 may be electrically connected to the first transparent connection line 400 through the via hole V2.
In the embodiment of the present application, since the wiring density of the first transparent connection lines 400 in the first display area 100a is low. Accordingly, a plurality of first transparent connection lines 400 may be arranged in the same layer wiring manner within the first display area 100 a. That is, the plurality of first transparent connection lines 400 in the first display area 100a are disposed in the same layer. That is, the plurality of first transparent connection lines 400 in the first display area 100a may be formed using the same patterning process, wherein the one patterning process and the one patterning process in the subsequent embodiments refer to: film deposition, photoresist coating, exposure, development, etching and photoresist stripping. In this way, the wiring difficulty and the manufacturing difficulty of the plurality of first transparent connection lines 400 in the first display area 100a can be effectively reduced, and thus the manufacturing complexity of the display panel 000 can be effectively simplified.
Alternatively, as shown in fig. 7, fig. 7 is a schematic connection diagram of a plurality of first sub-pixels in the first display area shown in fig. 3. The display panel 000 may further include: a plurality of second transparent connection lines 700. The plurality of second transparent connection lines 700 may be located in the first display area 100a, and the plurality of second transparent connection lines 700 are disposed in the same layer. That is, the plurality of second transparent connection lines 700 within the first display area 100a may be formed using the same patterning process.
Also, as shown in fig. 8, fig. 8 is a schematic view of the film structure of the display panel at B-B' shown in fig. 7. The plurality of second transparent connection lines 700 are disposed in different layers from the plurality of first transparent connection lines 400. That is, the insulating layer 800 exists between the conductive layer where the plurality of second transparent connection lines 700 are located and the conductive layer where the plurality of first transparent connection lines 400 are located. In this way, the phenomenon that the first and second transparent connection lines 700 and 800 are short-circuited at the crossing position can be prevented.
Wherein, each first sub-pixel 200 in a column of first sub-pixels 200 in the first display area 100a may be electrically connected through the second transparent connection line 700. For example, within the same column of first sub-pixels 200, every two adjacent first sub-pixels 200 may be electrically connected by at least one second transparent connection line 700. Also, a column of first sub-pixels 200 may be electrically connected to a column of second sub-pixels 300. For example, a column of first sub-pixels 200 may be electrically connected to a column of first sub-pixels 200 at a boundary of the first display area 100 a. In this way, it is ensured that a row of first sub-pixels 200 in the first display area 100a and a row of second sub-pixels 300 in the second display area 100b are electrically connected, so that a plurality of first sub-pixels 200 in the first display area 100a and a plurality of second sub-pixels 300 in the second display area 100b can emit light under the driving of the same driving chip.
Alternatively, the second transparent connection line 700 may be made of a transparent conductive material of ITO. In this way, the light transmittance of the first display area 100a can be ensured to be high.
In an embodiment of the present application, as shown in fig. 9, fig. 9 is another schematic diagram of a connection between a row of first sub-pixels and a row of second sub-pixels in the first display area of the display panel shown in fig. 3. The second target sub-pixel of the column of the first sub-pixels 200 within the first display area 100a, which is close to the outer boundary of the first display area 100a, is electrically connected to the column of the second sub-pixels 300.
By way of example, the display panel 000 may further include: a plurality of second signal connection lines 900. One of the second signal connection lines 900 is used for electrically connecting with one of the second sub-pixels 300. For example, each of the second sub-pixels 300 in the electrical connection of one column of the second sub-pixels 300 may be connected in series through at least one second signal connection line 900. The second target sub-pixel of the first sub-pixel 200 of a column in the first display area 100a may be directly electrically connected to the second signal connection line 900.
Alternatively, as shown in fig. 7 and 10, fig. 10 is a schematic view of a film structure at C-C' of the display panel shown in fig. 9. The display panel 000 may further include: pixel defining layer 1000. The pixel defining layer 1000 is configured to define a plurality of first pixel regions 101 in the first display area 100a and a plurality of second pixel regions 102 in the second display area 100b. The first subpixel 200 in the display panel 000 may include: the first light emitting device 201 is located within the first pixel region 101. The second subpixel 300 in the display panel 000 may include: the second light emitting device 301 is located within the second pixel region 102. The area of the first pixel area 101 is smaller than the area of the second pixel area 102, so that the area of the front projection of the first sub-pixel 200 on the substrate 100 is smaller than the area of the front projection of the second sub-pixel 300 on the substrate 100.
For example, the ratio of the area of the first pixel region 101 to the area of the second pixel region 102 is 1:2. In this case, the pixel density of the plurality of first sub-pixels 200 in the first display area 100a is the same as the pixel density of the plurality of second sub-pixels 300 in the second display area 100b. That is, the number of the first sub-pixels 200 and the number of the second sub-pixels 300 arranged in the same area. In this way, the overall display effect of the display panel 000 can be effectively improved.
In an embodiment of the present application, as shown in fig. 7 and 10, the first subpixel 200 in the display panel 000 may further include: a first pixel driving circuit 202 connected to the first light emitting device 201. For example, for any one sub-pixel group 200a within a row of first sub-pixels 200, the first pixel driving circuits 202 of any two adjacent first sub-pixels 200 in the sub-pixel group 200a may be electrically connected through the first transparent connection line 400; for a column of first sub-pixels 200, the first pixel driving circuits 202 of any two adjacent first sub-pixels 200 in the column of first sub-pixels 200 may be electrically connected through the second transparent connection line 700.
Alternatively, as shown in fig. 7, the front projection of the first pixel driving circuit 202 on the substrate 100 at least partially coincides with the front projection of the first light emitting device 201 on the substrate 100. Since the first pixel driving circuit 202 is generally opaque, the light transmittance of the first display area 100a can be effectively improved when the front projection of the first pixel driving circuit 202 on the substrate 100 is at least partially overlapped with the front projection of the first light emitting device 201 on the substrate 100.
In an embodiment of the present application, as shown in fig. 7 and 10, the second subpixel 300 in the display panel 000 may further include: a second pixel driving circuit 302 connected to the second light emitting device 301. For example, for a row of the second sub-pixels 300, each of the second pixel driving circuits 302 in the row of the second sub-pixels 300 may be electrically connected through the first signal connection line 600; for a column of second sub-pixels 300, each of the second pixel driving circuits 302 in the column of second sub-pixels 300 may be electrically connected through the second signal connection line 900.
Optionally, the display panel 000 in the embodiment of the present application may further include: the encapsulation layer 1100 is located on the side of the first light emitting device 201 and the second light emitting device 301 away from the substrate 100. The encapsulation layer 1100 is used for encapsulating the first light emitting device 201 and the second light emitting device 301, so as to prevent water and oxygen from entering the light emitting device in the display panel 000, thereby improving the service life of the light emitting device.
In the above embodiments, the types of the switching signal lines 500 are various, and the following two cases are taken as examples for illustrative purposes in the embodiments of the present application:
in the first case, the transfer signal line 500 may be a signal line made of a metallic material. In this case, the conductive signal of the transfer signal line 500 can be better, and the display effect of the first display area 100a can be ensured to be better. For example, the transit signal line 500 in this case may be generally disposed in the same layer as the second signal connection line 900, that is, the transit signal line 500 and the second signal connection line 900 are formed through the same patterning process.
In the second case, the transfer signal line 500 may be a signal line made of a transparent conductive material. In this case, it is possible to ensure that the light transmittance at the boundary within the first display area 100a is good. For example, the transit signal line 500 in this case may be generally provided in the same layer as the second transparent connection line 700, that is, the transit signal line 500 and the second transparent connection line 700 are formed through the same patterning process. In this way, the switching signal line 500 and the first transparent connection line 400 may be prevented from being shorted at the crossing position.
In the embodiment of the present application, the structures of the first pixel driving circuit 202 and the second pixel driving circuit 302 in the above-described embodiment may be the same. By way of example, the first pixel driving circuit 202 and the second pixel driving circuit 302 may each be a 7T1C driving circuit. That is, the first pixel driving circuit 202 and the second pixel driving circuit 302 are each constituted by 7 transistors and 1 storage capacitor.
For example, as shown in fig. 11, fig. 11 is a circuit diagram of a pixel driving circuit provided in an embodiment of the present application. The pixel driving circuit may be the first pixel driving circuit 202 or the second pixel driving circuit 302. The pixel driving circuit may include: the first transistor T1, the second transistor T2, the driving transistor T3, the fourth transistor T4, the fifth transistor T5, the sixth transistor T6, the seventh transistor T7, and the storage capacitor C. The first pole of the first transistor T1 is connected with the node N, and the second pole is connected with the initial signal end Vinit and the reset signal end RST; the first pole of the second transistor T2 is connected with the first pole of the driving transistor T3, and the second pole is connected with the node N; the grid electrode is connected with a grid electrode driving signal end Gate; the gate of the driving transistor T3 is connected to the node N; the first pole of the fourth transistor T4 is connected with the data signal end Da, the second pole is connected with the second pole of the driving transistor T3, and the grid electrode is connected with the grid electrode driving signal end Gate; the first pole of the fifth transistor T5 is connected with the first power supply signal end VDD, the second pole is connected with the second pole of the driving transistor T3, and the grid electrode is connected with the enabling signal end EM; the first pole of the sixth transistor T6 is connected with the first pole of the driving transistor T3, and the grid electrode is connected with the enabling signal end EM; the first pole of the seventh transistor T7 is connected to the initial signal terminal Vinit, and the second pole is connected to the second pole of the sixth transistor T6 and the reset signal terminal RST. The storage capacitor C is connected between the gate of the driving transistor T3 and the first power signal terminal VDD. The pixel driving circuit may be connected to the light emitting device OLED for driving the light emitting device OLED to emit light, and the light emitting device OLED may be connected between the second electrode of the sixth transistor T6 and the second power source terminal VSS.
In the above-described embodiment, each of the second sub-pixels 300 in a row of the second sub-pixels 300 may be connected in series through the plurality of first signal connection lines 600. Wherein the plurality of first signal connection lines 600 for connecting a row of the second sub-pixels 300 are different in signal for transmission. For example, the number of the plurality of first signal connection lines 600 for connecting one row of the second sub-pixels 300 is four, which are respectively: a reset control line RST, an initial signal line Vinit, an enable signal line EM, and a Gate driving signal line Gate. In this case, four first transparent connection lines 400 are required to be electrically connected to the reset control line RST, the initial signal line Vinit, the enable signal line EM, and the Gate driving signal line Gate, respectively, between any two adjacent first sub-pixels 200 within the same sub-pixel group 200a in one row of first sub-pixels 200.
Each of the second sub-pixels 300 in a column of the second sub-pixels 300 may be connected in series through a plurality of first signal connection lines 600. The signals transmitted by the plurality of second signal connection lines 900 for connecting the second sub-pixels 300 in a row are different. For example, the number of the plurality of second signal connection lines 900 for connecting the second sub-pixels 300 in one column is two, and the number is respectively: the first power signal line VDD and the data signal line Da. In this case, two second transparent connection lines 900 are required to be electrically connected to the first power signal line VDD and the data signal line Da, respectively, between any two adjacent first sub-pixels 200 in one column of the first sub-pixels 200.
In summary, the display panel provided in the embodiment of the application includes: the display device comprises a substrate, a plurality of first sub-pixels arranged in an array, a plurality of second sub-pixels arranged in an array and a plurality of first transparent connecting wires, wherein the first sub-pixels are arranged in the array and are positioned on the substrate. Since the area of the orthographic projection of the first sub-pixel on the substrate is smaller than the area of the orthographic projection of the second sub-pixel on the substrate. Therefore, more first sub-pixels can be arranged in the first display area, so that the number of the first sub-pixels in the first display area is more, the PPI of the first display area is effectively improved, and the display effect of the first display area in the display panel is better. The first sub-pixels in the same row in the first display area can be divided into at least two sub-pixel groups, and the first sub-pixels in each sub-pixel group can be electrically connected through the first transparent connecting line. Therefore, the wiring density of the first transparent connecting wire in the first display area can be effectively reduced, so that the width of the first transparent connecting wire is larger, the conductivity of the first transparent connecting wire is further improved, and the display effect of the first display area in the display panel is further improved. Therefore, the overall display effect of the display panel can be guaranteed to be good.
The embodiment of the application also provides a display device, which can be: any product or component with display function such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.
As illustrated in fig. 12 and 13, fig. 12 is a schematic structural view of a display device according to an embodiment of the present application, and fig. 13 is a sectional view of the display device shown in fig. 12 at D-D'. The display device may include: the display panel 000 may be constructed as the display panel in the above-described embodiment.
The display device may have a first display area 100a and a second display area 100b. The shape of the first display area 100a may be a circle, an ellipse, or two ellipses in parallel, which is not limited in the embodiment of the present application.
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, a distance sensor, or the like in a camera. The photosensitive device 001 is located on the side opposite to the display surface of the display panel 000. Wherein, the orthographic projection of the photosensitive surface 001a of the photosensitive device 001 on the display panel is located in the first display area 100 a. Since the light transmittance of the first display area 101 is better, the external ambient light can normally enter the light receiving surface 001a of the light sensing device 001 after passing through the first display area 100a, so that the light sensing device 001 can work normally.
It is noted that in the drawings, the size of layers and regions may be exaggerated for clarity of illustration. Moreover, it will be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element or intervening layers may be present. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element or intervening layers or elements may be present. In addition, it will be understood that when a layer or element is referred to as being "between" two layers or elements, it can be the only layer between the two layers or elements, or more than one intervening layer or element may also be present. Like reference numerals refer to like elements throughout.
In the present disclosure, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless explicitly defined otherwise.
The foregoing description of the preferred embodiments of the present application is not intended to limit the application, but is intended to cover all modifications, equivalents, alternatives, and improvements falling within the spirit and principles of the application.
Claims (15)
1. A display panel, comprising:
a substrate having a first display region and a second display region located at the periphery of the first display region;
a plurality of first sub-pixels arranged in an array in the first display area;
a plurality of second sub-pixels arranged in an array in the second display area, wherein the area of orthographic projection of the second sub-pixels on the substrate is larger than that of orthographic projection of the first sub-pixels on the substrate;
and a plurality of first transparent connection lines located in the first display area;
the first sub-pixels in one row in the first display area comprise at least two sub-pixel groups, each first sub-pixel in the sub-pixel groups is electrically connected through the first transparent connecting wire, and each sub-pixel group is electrically connected with the second sub-pixels in the same row.
2. The display panel of claim 1, wherein a first target subpixel of each of the subpixel groups proximate to an outer boundary of the first display area is electrically connected to the second subpixel of the same row.
3. The display panel of claim 2, further comprising: and the first target sub-pixels in at least one sub-pixel group are electrically connected with one row of the second sub-pixels through the transfer signal lines.
4. The display panel of claim 3, further comprising: the first signal connection lines are used for being electrically connected with one row of the second sub-pixels, the first target sub-pixels of one sub-pixel group in the at least two sub-pixel groups are connected with the first signal connection lines, and the first target sub-pixels of the other sub-pixel groups are connected with the first signal connection lines through the transfer signal lines.
5. A display panel according to claim 3, wherein the transfer signal line is a signal line made of a transparent conductive material.
6. The display panel of claim 1, wherein the plurality of first transparent connecting lines are arranged in a same layer.
7. The display panel of claim 6, further comprising: the second transparent connecting wires are arranged in the first display area, are arranged in the same layer and are arranged in different layers with the first transparent connecting wires;
each first sub-pixel in a row of the first sub-pixels in the first display area is electrically connected through the second transparent connecting wire, and a row of the first sub-pixels is electrically connected with a row of the second sub-pixels.
8. The display panel of claim 7, further comprising: the second signal connecting wires are used for being electrically connected with the second sub-pixels in the same column, and the second signal connecting wires are electrically connected with the second transparent connecting wires at the junction of the first display area and the second display area.
9. The display panel according to any one of claims 1 to 8, further comprising: a pixel defining layer for defining a plurality of first pixel regions within the first display region and a plurality of second pixel regions within the second display region;
the first subpixel includes: a first light emitting device located within the first pixel region, the second subpixel including: a second light emitting device located in the second pixel region;
the area of the first pixel area is smaller than that of the second pixel area.
10. The display panel of claim 9, wherein a ratio of an area of the first pixel region to an area of the second display region is 1:2.
11. The display panel of claim 10, wherein a pixel density of the plurality of first sub-pixels is equal to a pixel density of the plurality of second sub-pixels.
12. The display panel of claim 9, wherein the first subpixel further comprises: and the first pixel driving circuits of any two adjacent first sub-pixels in the sub-pixel group are electrically connected through the first transparent connecting wire.
13. The display panel of claim 12, wherein an orthographic projection of the first pixel driving circuit on the substrate at least partially coincides with an orthographic projection of the first light emitting device on the substrate.
14. The display panel of claim 9, wherein the second subpixel further comprises: and the second pixel driving circuits are electrically connected with the second light emitting devices, and each second pixel driving circuit in one row of the second sub-pixels is electrically connected through a first signal connecting wire.
15. A display device, comprising: a light sensing device and the display panel of any one of claims 1 to 14, the light sensing device being located on a side opposite to a display surface of the display panel, and an orthographic projection of a light receiving surface of the light sensing device on the substrate being located in the first display region.
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| CN110767097A (en) * | 2019-11-27 | 2020-02-07 | 武汉天马微电子有限公司 | Display panel and display device |
| CN112445038A (en) * | 2020-11-30 | 2021-03-05 | 厦门天马微电子有限公司 | Display panel and display device |
| CN113012620A (en) * | 2021-03-26 | 2021-06-22 | 合肥维信诺科技有限公司 | Display panel |
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| CN110335567B (en) * | 2019-07-02 | 2021-02-09 | 合肥京东方卓印科技有限公司 | Array substrate, display panel and display device |
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| CN110767097A (en) * | 2019-11-27 | 2020-02-07 | 武汉天马微电子有限公司 | Display panel and display device |
| CN112445038A (en) * | 2020-11-30 | 2021-03-05 | 厦门天马微电子有限公司 | Display panel and display device |
| CN113012620A (en) * | 2021-03-26 | 2021-06-22 | 合肥维信诺科技有限公司 | Display panel |
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