CN114649394A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
- Publication number
- CN114649394A CN114649394A CN202210288150.1A CN202210288150A CN114649394A CN 114649394 A CN114649394 A CN 114649394A CN 202210288150 A CN202210288150 A CN 202210288150A CN 114649394 A CN114649394 A CN 114649394A
- Authority
- CN
- China
- Prior art keywords
- pixel driving
- signal line
- driving circuits
- display panel
- reset signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
- H10K59/128—Active-matrix OLED [AMOLED] displays comprising two independent displays, e.g. for emitting information from two major sides of the display
-
- 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
- H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Sustainable Development (AREA)
- Electroluminescent Light Sources (AREA)
- Control Of El Displays (AREA)
Abstract
The application discloses display panel and display device belongs to and shows technical field. The display panel includes: a plurality of first light emitting devices arranged in an array in the light-transmitting display region; a plurality of second light emitting devices arranged in an array 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 are positioned in the normal display area; the pixel driving circuit comprises a plurality of first pixel driving circuits, a plurality of second pixel driving circuits, a plurality of first driving signal lines and a plurality of second driving signal lines, wherein one first driving signal line is electrically connected with the first pixel driving circuits in the same row, and one second driving signal line is electrically connected with the second pixel driving circuits in the same row; because the first driving signal line and the second driving signal line are arranged in an insulating mode, the driving chip can independently control the first light-emitting device and the second light-emitting device to emit light, the light-emitting brightness of the first light-emitting device is approximately equal to that of the second light-emitting device, and therefore the overall display effect of the display panel is improved.
Description
Technical Field
The present disclosure relates to display technologies, and particularly to a display panel and a display device.
Background
At present, in order to provide better visual experience for users, a display screen (also referred to as a display panel) in a display device is being developed in a large screen and full screen manner, and the full screen display screen can place a camera, an infrared sensor, a light sensor and other photosensitive devices below the display panel.
The display panel may include: a light-transmissive display part and a normal display part located at the periphery of the light-transmissive display part. Wherein only the light emitting device is provided in the light-transmitting display portion, the pixel driving circuit electrically connected to the light emitting device in the light-transmitting display portion may be provided in the normal display portion. In order to improve the light transmittance of the light-transmitting display portion, a transparent connection trace is usually required to connect the light-emitting device in the light-transmitting display portion and the pixel driving circuit in the normal display portion. Therefore, ambient light can penetrate through the light-transmitting display part to enter the light receiving surface of the photosensitive device, so that the photosensitive device can work normally under the condition that the screen ratio of the display device is high.
However, in the above-mentioned display panel, the display effect of the light-transmitting display portion is greatly different from that of the normal display portion, resulting in poor overall display effect of the display panel.
Disclosure of Invention
The embodiment of the application provides a display panel and a display device, can improve display panel's whole display effect, technical scheme is as follows:
according to an aspect of the present application, there is provided a display panel having a light-transmissive display region and a normal display region located at a periphery of the light-transmissive display region, the display panel including:
a plurality of first light emitting devices arranged in an array and positioned in the light-transmitting display area;
a plurality of second light emitting devices arranged in an array 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 are positioned in the normal display area, one column of the first pixel driving circuits is used for being electrically connected with one column of the first light emitting devices, and one column of the second pixel driving circuits is used for being electrically connected with one column of the second light emitting devices;
the pixel driving circuit comprises a plurality of first pixel driving circuits, a plurality of second pixel driving circuits, a plurality of first driving signal lines and a plurality of second driving signal lines, wherein one first driving signal line is electrically connected with the first pixel driving circuits in the same row, and one second driving signal line is electrically connected with the second pixel driving circuits in the same row;
wherein the first driving signal line and the second driving signal line are arranged in an insulated manner, and the plurality of first driving signal lines and the plurality of second driving signal lines are all configured to: and is electrically connected with the driving chip.
Optionally, the display panel further includes: and the winding area is positioned between the light-transmitting display area and the normal display area, part of the second driving signal wires in the plurality of second driving signal wires are provided with a winding part, the winding part is positioned in the winding area, and the winding part and the first pixel driving circuit are arranged in an insulating way.
Optionally, the second driving signal line having the winding portion further includes: a first connection part electrically connected to one end of the winding part, and a second connection part electrically connected to the other end of the winding part;
the first connecting part is electrically connected with each second pixel driving circuit which is positioned on one side of the light-transmitting display area in the second pixel driving circuits in a row; the second connecting portion is electrically connected with each second pixel driving circuit on the other side of the light-transmitting display area in the row of second pixel driving circuits.
Optionally, the plurality of first driving signal lines include: each first driving signal line in one driving signal line group is arranged on one side of the light-transmitting display area, and each first driving signal line in the other driving signal line group is arranged on the other side of the light-transmitting display area;
wherein the second driving signal line having the winding portion is arranged between the two driving signal line groups.
Optionally, the display panel further includes: 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;
wherein the first reset signal line and the second reset signal line are insulated from each other.
Optionally, the display panel further has a non-display area located at a periphery of the normal display area, and the display panel further includes: the display panel comprises a non-display area, a first reset signal line bus and a second reset signal line bus, wherein the first reset signal line is electrically connected with the first reset signal line bus, and the second reset signal line is electrically connected with the second reset signal line bus.
Optionally, the first pixel driving circuit has two reset signal terminals, two first reset signal lines electrically connected to the first pixel driving circuit in the same row are insulated from each other, and one first reset signal line is electrically connected to one reset signal terminal of each of the first pixel driving circuits in the 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 of the first pixel driving circuits in the first pixel driving circuit in the same row.
Optionally, the second pixel driving circuit has two reset signal terminals, two second reset signal lines electrically connected to the second pixel driving circuit in the same row are insulated from each other, and one of the second reset signal lines is electrically connected to one reset signal terminal of each of the second pixel driving circuits in the second pixel driving circuit in the same row, and the other is electrically connected to the other reset signal terminal of each of the second pixel driving circuits in the second pixel driving circuit in the same row.
Optionally, the display panel further includes: and the first pixel driving circuits in one row are electrically connected with the first light-emitting devices in one row through the transparent connecting lines.
Optionally, the display panel further includes: the virtual pixel driving circuits are arranged in a plurality of arrays in the normal display area and are arranged in an insulated mode with the signal lines in the display panel;
the pixel driving circuits in the normal display area comprise a plurality of first-class pixel driving circuits and a plurality of second-class pixel driving circuits, and the plurality of first-class pixel driving circuits comprise: a plurality of the first pixel driving circuits and a plurality of the dummy pixel driving circuits, the plurality of second type pixel driving circuits including: 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 uniformly distributed in the normal display area, and the plurality of columns of the first-type pixel driving circuits and the plurality of columns of the second-type pixel driving circuits are distributed in a staggered mode.
Optionally, the ratio of the number of columns of the multiple columns of the second-type pixel driving circuits to the number of columns of the multiple columns of the first-type pixel driving circuits is 3: 1.
according to another aspect of the present application, there is provided a display device including: the display panel comprises a photosensitive device and the display panel, wherein the photosensitive device is positioned on one 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 positioned in the light-transmitting display area.
The beneficial effects that technical scheme that this application embodiment brought include at least:
provided is a display panel including: the display device comprises a plurality of first light-emitting devices positioned in a light-transmitting display area, a plurality of second light-emitting devices positioned in a normal display area, a plurality of first pixel driving circuits, a plurality of second pixel driving circuits, a plurality of first driving signal lines and a plurality of second driving signal lines. Because the first driving signal line and the second driving signal line are arranged in an insulating mode, the driving chip can control the plurality of first light-emitting devices through the plurality of first driving signal lines independently and can control the plurality of second light-emitting devices through the plurality of second driving signal lines independently. So, can compensate the loaded signal of telecommunication of first drive signal line alone through driver chip for the luminance of first luminescent device approximately equals the luminance of second luminescent device, and then difference between the display effect that can effectual reduction printing opacity display area and the display effect in normal display area makes this display panel's whole display effect better.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of a conventional pixel driving circuit of a display panel;
fig. 2 is an effect diagram when the display panel shown in fig. 1 displays a screen;
fig. 3 is a top view of a display panel provided in an embodiment of the present application;
fig. 4 is a partially enlarged view of the display panel shown in fig. 3;
fig. 5 is a schematic diagram illustrating a first light emitting device provided in the embodiment of the present application when the first light emitting device is electrically connected to a corresponding first pixel driving circuit;
fig. 6 is a schematic diagram of a second light emitting device provided in the embodiment of the present application when the second light emitting device is electrically connected to a corresponding second pixel driving circuit;
fig. 7 is a schematic structural diagram of a second driving signal line having a winding portion according to an embodiment of the present application;
FIG. 8 is a distribution diagram of a pixel driving circuit of the display panel shown in FIG. 3;
fig. 9 is a schematic diagram of a connection between a reset signal line and a driving circuit in the display panel shown in fig. 3;
fig. 10 is a circuit diagram of a first pixel driving circuit according to an embodiment of the present application;
fig. 11 is a circuit diagram of a second pixel driving circuit according to an embodiment of the present application;
fig. 12 is a schematic connection diagram of a reset signal bus and a driving chip according to an embodiment of the present disclosure;
fig. 13 is a schematic structural diagram of a display device according to an embodiment of the present application;
fig. 14 is a sectional view of the display device shown in fig. 13 at D-D'.
With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a wiring diagram of a pixel driving circuit of a display panel. The display panel 00 has: a transparent display area 0a, and a normal display area 0b located at the periphery of the transparent display area 0 a. The display panel 00 may include: a plurality of first light emitting devices (not shown) arranged in an array in the transmissive display area 0a, a plurality of second light emitting devices (not shown) arranged in an array in the normal display area 0b, and a plurality of first pixel driving circuits 01 and a plurality of second pixel driving circuits 02 in the normal display area 0 a.
The first pixel driving circuit 01 in one column is electrically connected to the first light emitting device in one column, and the second pixel driving circuit 02 in one column is electrically connected to the second light emitting device in one column. In order to ensure that the light transmittance of the transparent display area 0a in the display panel 00 is high, the first pixel driving circuit 01 located in the normal display area 0b and the first light emitting device located in the transparent display area 0a need to be connected by a transparent connection wire.
In the plurality of rows of light emitting devices of the display panel 00, for the row of light emitting devices including both the first light emitting device and the second light emitting device, it is necessary to simultaneously connect a row of the first pixel driving circuits 01 electrically connected to the first light emitting device of the row of light emitting devices and a row of the second pixel driving circuits 02 electrically connected to the second light emitting device of the row of light emitting devices with one first driving signal line 03. In this manner, it can be ensured that the one first driving signal line 03 can simultaneously control the one column of the first pixel driving circuits 01 and the one column of the second pixel driving circuits 02 so that the one column of the light emitting devices including both the first light emitting devices and the second light emitting devices can be simultaneously driven by the one first driving signal line 03.
In the plurality of rows of light emitting devices of the display panel 00, for the row of light emitting devices including only the second light emitting devices, it is necessary to simultaneously connect a row of the second pixel driving circuits 02 electrically connected to the row of the second light emitting devices with one second driving signal line 04.
However, since the first light emitting device and the first pixel driving circuit 01 need to be electrically connected by a transparent connection line, and the second light emitting device and the second pixel driving circuit 02 need to be directly electrically connected, the transparent connection line is not needed for switching. And the resistance of the transparent connection line is usually large, the transparent connection line may also generate redundant capacitance with other electrode structures. Therefore, the electrical signal loaded on the first driving signal line 03 is influenced by the transparent connection line, so that the light emitting brightness of the row of light emitting devices (including both the first light emitting device and the second light emitting device) driven by the first driving signal line 03 is different from the light emitting brightness of the row of light emitting devices (including only the second light emitting device) driven by the second driving signal line 03. In this case, as shown in fig. 2, fig. 2 is an effect diagram when the display panel shown in fig. 1 displays a screen. The display effect of the transparent display area 0a in the display panel 00 is greatly different from the display effect of the normal display area 0 b. Also, in the normal display area 0b, the display effect of the area 0b1 in which the first driving signal lines 03 are distributed is greatly different from the display effect of the area 0b2 in which the second driving signal lines 04 are distributed. Eventually, the overall display effect of the display panel 00 is poor.
Referring to fig. 3, fig. 3 is a top view of a display panel according to an embodiment of the present disclosure. The display panel 000 has a light-transmissive display region 00a, and a normal display region 00b located at the periphery of the light-transmissive display region 00 a. Here, the Display panel 000 may be an Organic Light Emitting Display (OLED) Display panel or an Active Matrix Organic Light Emitting Diode (AM-OLED) Display panel. When the display panel is an OELD display panel or an AM-OLED display panel, the display panel may be a top emission type display panel or a bottom emission type display panel.
In order to clearly see the structure of the display panel, please refer to fig. 4, fig. 4 is a partially enlarged view of the display panel shown in fig. 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. Note that, in fig. 4, the numbers of the first light emitting device 100 and the second light emitting device 200 are not labeled, and the numbers of the first light emitting device 100 and the second light emitting device 200 will be labeled in the subsequent drawings.
The number of the first light emitting devices 100 in the display panel 000 is plural, and the plural first light emitting devices 100 may be arranged in an array in the light transmissive display region 00 a.
The number of the second light emitting devices 200 in the display panel 000 is plural, and the plurality of second light emitting devices 200 may be arranged in an array in the normal display area 00 b.
The number of the first pixel driving circuits 300 and the second pixel driving circuits 400 in the display panel 000 is plural, and the plurality of first pixel driving circuits 300 may be arranged in the normal display area 00b in an array manner, and the plurality of second pixel driving circuits 400 may also be arranged in the normal display area 00b in an array manner.
The first pixel driving circuit 300 is electrically connected to the first light emitting device 100. Here, each of the first pixel driving circuits 300 in a column of the first pixel driving circuits 300 may be electrically connected to each of the first light emitting devices 100 in a column of the first light emitting devices 100 in a one-to-one correspondence. In this application, please refer to fig. 5, wherein fig. 5 is a schematic diagram illustrating an electrical connection between a first light emitting device and a corresponding first pixel driving circuit according to an embodiment of the present application. The display panel 000 may further include: a plurality of transparent connection lines 700. Each of the first light emitting devices 100 may be electrically connected to the corresponding first pixel driving circuit 300 through a transparent connection line 700. Since the light transmittance of the transparent connecting line 700 is better. Therefore, when the transparent signal lines 700 are arranged in the light-transmitting display region 00a, the influence of the transparent signal lines 700 on the light-transmitting property of the light-transmitting display region 00a is small. Here, the transparent signal line 700 may be made of a transparent conductive material, for example, Indium Tin Oxide (ITO).
A column of second pixel driving circuits 400 is used to electrically connect with a column of second light emitting devices 200. Here, each of the second pixel driving circuits 400 in one column of the second pixel driving circuits 400 may be electrically connected to each of the second light emitting devices 200 in one column of the second light emitting devices 200 in one-to-one correspondence. Please refer to fig. 6, where fig. 6 is a schematic diagram illustrating an electrical connection between a second light emitting device and a corresponding second pixel driving circuit according to an embodiment of the present disclosure. Since the second pixel driving circuit 400 and the second light emitting device 200 are both located in the normal display region. Therefore, the second pixel driving circuit 400 and the corresponding second light emitting device 200 can be directly electrically connected without being connected through a transparent connection wire.
The number of the first driving signal lines 500 and the second driving signal lines 600 in the display panel 000 is plural. One first driving signal line 500 may be connected to a column of first pixel driving circuits 300, one second driving signal line 600 may be connected to a column of second pixel driving circuits 400, and the first driving signal line 500 corresponding to the first pixel driving circuit 300 is insulated from the second driving signal line 600 corresponding to the second pixel driving circuit 400.
In the embodiment of the present application, since the first driving signal line 500 and the second driving signal line 600 disposed in the display panel 000 are disposed in an insulated manner, and the first driving signal line 500 is electrically connected only to the first pixel driving circuit 300 and is not electrically connected to the second pixel driving circuit 400, the second driving signal line 600 is also electrically connected only to the second pixel driving circuit 400 and is not electrically connected to the first pixel driving circuit 300. Accordingly, the driving chip may control the plurality of first light emitting devices 100 through the plurality of first driving signal lines 500 alone, and may control the plurality of second light emitting devices 200 through the plurality of second driving signal lines 600 alone. Therefore, the electric signal loaded by the first driving signal line 500 can be compensated separately through the driving chip, so that the luminance of the first light emitting device 100 is approximately equal to the luminance of the second light emitting device 200, and further, the difference between the display effect of the light-transmitting display area 00a and the display effect of the normal display area 00b can be effectively reduced, so that the overall display effect of the display panel 000 is better.
In summary, the present application provides a display panel, including: the display device comprises a plurality of first light-emitting devices positioned in a light-transmitting display area, a plurality of second light-emitting devices positioned in a normal display area, a plurality of first pixel driving circuits, a plurality of second pixel driving circuits, a plurality of first driving signal lines and a plurality of second driving signal lines. Because the first driving signal line and the second driving signal line are arranged in an insulating mode, the driving chip can control the plurality of first light-emitting devices through the plurality of first driving signal lines independently and can control the plurality of second light-emitting devices through the plurality of second driving signal lines independently. So, can compensate the signal of telecommunication of first drive signal line loading alone through driver chip for the luminance of first luminescent device is approximately equal to the luminance of second luminescent device, and then can effectual reduction printing opacity display area's the display effect and the normal display area's difference between the display effect, makes this display panel's whole display effect better.
In the embodiment of the present application, the first driving signal line 500 and the second driving signal line 600 in the display panel 000 are disposed on the same layer and have the same material. That is, the first driving signal line 500 and the second driving signal line 600 are formed through the same patterning process. For this reason, in order to ensure that the first driving signal line 500 and the second driving signal line 600 can be provided in an insulated manner, it is necessary to ensure that the orthographic projection of the first driving signal line 500 on the substrate in the display panel 000 does not coincide with the orthographic projection of the second driving signal line 600 on the substrate.
Optionally, please refer to fig. 7, where fig. 7 is a schematic structural diagram of a second driving signal line with a winding portion according to an embodiment of the present application. The display panel 000 further has: a winding region (not labeled in fig. 7) located between the transparent display region 00a and the normal display region 00b, and a portion of the second driving signal lines 600 in the plurality of second driving signal lines 600 have a winding portion 601. The winding portion 601 of each second driving signal line 600 may be located in the winding area, and the winding portion 601 is insulated from the first pixel driving circuit 300. In this way, the wire winding portion 601 is not electrically connected to the first pixel driving circuit 300, so that the second driving signal line 600 can drive only the second pixel driving circuit 400 to operate and does not drive the first pixel driving circuit 300 to operate.
Illustratively, the second driving signal line 600 having the winding portion 601 in the display panel 000 further has: 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 driving circuit 400 located at one side of the transparent display area in the row of second pixel driving circuits 400; the second connecting portion 603 is electrically connected to each of the second pixel driving circuits 400 located at the other side of the transparent display region in the row of second pixel driving circuits 400. In the present application, by providing the winding portion 601 of the second driving signal line 600 in the winding region, it is ensured that the second driving signal line 600 can drive each of the second pixel driving circuits 400 in one row through the first connection portion 602 and the second connection portion 603 while ensuring high light transmittance of the light transmissive display region 00 a.
In this case, since a single second driving signal line 600 is composed by being connected through the first connection portion 602, the winding portion 601, and the second connection portion 603, the second driving signal line 600 is provided to be 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, the influence of the first pixel driving circuit 300 is not applied, so that the light emission luminance of the column of second light emitting devices 200 can be approximately the same as the light emission luminance of the other light emitting devices.
In the embodiment of the present application, since one second driving signal line 600 passes through the winding portion 601, the second pixel driving circuits in the same column on both sides of the transmissive display region can be connected, and the second driving signal line 600 is insulated from the first pixel driving circuit 300, so that the second driving signal line 600 is electrically connected to only the second pixel driving circuit 400, which is not electrically connected to the first pixel driving circuit 300; the second driving signal lines 600 not provided with the winding portion 601 (i.e., the second driving signal lines 600 located on both sides of the transmissive display area 00 a) are also insulated from the first pixel driving circuit 300, and these second driving signal lines 600 are also electrically connected only to the second pixel driving circuit 400. Thus, for the second driving signal line 600 with the winding portion 601, when the second light emitting device 200 is controlled, the second driving signal line 600 and the second driving signal line 600 without the winding portion 601 are not affected by the first pixel driving circuit 300, so that the light emitting brightness of each second light emitting device 200 is approximately the same, and further, the difference between the display effects of the normal display area 00b can be effectively reduced, and the overall display effect of the display panel 000 is better.
Optionally, the plurality of first driving signal lines 500 includes: two driving signal line groups, each first driving signal line 500 in one driving signal line group is arranged at one side of the light-transmitting display area 00a, and each first driving signal line 500 in the other driving signal line group is arranged at the other side of the light-transmitting display area 00 a; wherein the second driving signal line 600 having the winding portion 601 is arranged between two driving signal line groups.
In this case, the plurality of first driving signal lines 500 in the display panel 000 may be divided into two driving signal line groups, which are respectively arranged on two sides of the light-transmitting display area 00a, so that the plurality of rows of first pixel driving circuits 300 electrically connected to the plurality of first driving signal lines 500 may also be uniformly distributed on two sides of the light-transmitting display area 00a, so that the plurality of rows of first pixel driving circuits 300 are uniformly distributed in the normal display area 00 b. Also, the first driving signal lines 500 arranged in the normal display area 00b are electrically connected only to the corresponding first pixel driving circuits 300, which are disposed to be insulated from the second pixel driving circuits 400. For this reason, after the electric signal applied to the first driving signal line 500 is compensated separately, the luminance of the first light emitting device 300 controlled by the first driving signal line 500 and the first pixel driving circuit 300 can be ensured to be approximately equal to the luminance of the second light emitting device 200 controlled by the second driving signal line 600 and the second pixel driving circuit 400, so that the overall display effect of the display panel 000 is good.
Alternatively, referring to fig. 8, fig. 8 is a distribution schematic diagram of the pixel driving circuit of the display panel shown in fig. 3. The display panel 000 further includes: and a plurality of dummy pixel driving circuits 800 arranged in an array in the normal display area, wherein the dummy pixel driving circuits 800 are insulated from the signal lines in the display panel 000. Illustratively, the dummy driving circuits 800 provided in the display panel 000 are not only provided to be insulated from the first driving signal lines 500 and the second driving signal lines 600, but also these dummy driving circuits 800 are provided to be insulated from other signal lines (e.g., gate lines, reset signal lines, etc.) in the display panel. Also, the dummy pixel driving circuit 800 within the display panel 000 is electrically connected to neither the first light emitting device 100 nor the second light emitting device 200.
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 may be disposed in the same layer. And the area of the orthographic projection of the dummy pixel driving circuit 800 on the substrate in 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 area of the orthographic projection of the second pixel driving circuit 400 on the substrate. Thus, by arranging a plurality of virtual pixel driving circuits 800 arranged in an array in the normal display area 00b, various pixel driving circuits arranged in the normal display area 00b can be uniformly distributed, and the difficulty in preparing the pixel driving circuits can be simplified.
Optionally, with continuing reference to fig. 8, the pixel driving circuits in the normal display area 00b include a plurality of first-type pixel driving circuits 900 and a plurality of second-type pixel driving circuits 1000, where the plurality of first-type pixel driving circuits include: a plurality of first pixel driving circuits 300 and a plurality of dummy pixel driving circuits 800, and a plurality of second type pixel driving circuits 1000 includes: a plurality of second pixel driving circuits 400; the plurality of first-type pixel driving circuits 900 and the plurality of second-type pixel driving circuits 1000 are uniformly distributed in the normal display area, and the plurality of columns of first-type pixel driving circuits 900 and the plurality of columns of second-type pixel driving circuits 1000 are distributed in a staggered manner.
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 pixel driving circuits 900 is also less than that of the second-type pixel driving circuits 1000. Illustratively, with continued reference to fig. 8, the ratio of the number of columns of the multi-column second-type pixel driving circuit 1000 to the number of columns of the multi-column first-type pixel driving circuit 900 is 3: 1, that is, 1 column of the first type pixel driving circuit 900 is added beside every 3 columns of the second type pixel driving circuit 1000.
It should be noted that, in the embodiment of the present application, the light-transmitting display area 00a is taken as an example for schematic illustration. In other alternative implementations, the light-transmitting display area 00a may also be in a square shape, a hexagonal shape, and the like, which is not limited in this embodiment of the application.
Alternatively, referring to fig. 9, fig. 9 is a schematic connection diagram of a reset signal line and a driving circuit in the display panel shown in fig. 3. The display panel 000 further 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; here, the first reset signal line 1100 and the second reset signal line 1200 are insulated from each other. In this case, the second reset signal line 1200 connected to the second pixel driving circuit 400 is provided to be insulated due to the first reset signal line 1100 to which the first pixel driving circuit 300 is connected. Therefore, the first pixel driving circuit 300 can be reset alone by the first reset signal line 1100, and the second pixel driving circuit 400 can be reset alone by the second reset signal line 1200, so that the difference between the display effect of the light-transmitting display region 00a and the display effect of the normal display region 00b can be further reduced.
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 have 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. For this reason, in order to ensure that the first reset signal line 1100 and the second reset signal line 1200 can be provided in an insulated manner, it is necessary to ensure that the orthographic projection of the first reset signal line 1100 on the substrate in the display panel 000 does not overlap the orthographic projection of the second reset signal line 1200 on the substrate.
Illustratively, with continued reference to fig. 9, the number of the first reset signal lines 1100 in the display panel 000 is plural; the first pixel driving circuit 300 has two reset signal terminals, the number of the 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 arranged in an insulated manner, one first reset signal line is electrically connected to one reset signal terminal of each first pixel driving circuit in the first pixel driving circuits 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 first pixel driving circuits in the same row.
Note that the independent first reset signal line 1101 may use a positive voltage to reduce excessive resetting of the capacitor, so as to ensure the charging rate of the capacitor in the transmissive display area 00 a; the independent first reset signal line 1102 can use a biased voltage to pre-charge the parasitic capacitance from the TFT to the anode line, ensuring that the luminance of the transmissive display area 00a is consistent with the luminance of the normal display area 00 b.
Illustratively, with continued reference to fig. 9, the number of the second reset signal lines 1200 in the display panel 000 is plural; the second pixel driving circuit 400 has two reset signal terminals, two second reset signal lines (a second reset signal line 1201 and a second reset signal line 1202) electrically connected to the second pixel driving circuits in the same row are provided, the two second reset signal lines are insulated, one second reset signal line is electrically connected to one reset signal terminal of each of 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 of the second pixel driving circuits in the same row.
In the embodiment of the present application, since there are two independent first reset signal lines 1101 and 1102 as well as an independent first driving signal line 500 for each first pixel driving circuit 300; for each second pixel driving circuit 400, there are a separate second driving signal line 600 and two separate second reset signal lines 1201 and 1202. Thus, the driving chip can compensate the electrical signal loaded by the first driving signal line 500, and can also compensate the electrical signal loaded by the two first reset signal lines 1101 and 1102, so that the luminance of the first light emitting device 100 is 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, and ensuring that the whole display effect of the display panel 000 is better.
Exemplarily, referring to fig. 10, fig. 10 is a circuit diagram of a first pixel driving circuit according to 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 may be connected to an independent first reset signal line 1101, and the reset signal terminal Vint4 may 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. Wherein, a first pole of the first transistor T1 is connected to the node N1, and a second pole is connected to the initial signal terminal Vinit3 and the Reset signal terminal Reset 1; the first pole of the second transistor T2 is connected to the first pole of the driving transistor T3, and the second pole is connected to the node N3; the grid is connected with a grid driving signal end Gate; the gate of the driving transistor T3 is connected to the node N2; a first pole of the fourth transistor T4 is connected to the Data signal terminal Data, a second pole is connected to the second pole of the driving transistor T3, and a Gate is connected to the Gate driving signal terminal Gate; a first pole of the fifth transistor T5 is connected to the first power signal terminal VDD, a second pole is connected to the second pole of the driving transistor T3, and a gate is connected to the enable signal terminal EM; a first electrode of the sixth transistor T6 is connected to the first electrode of the driving transistor T3, and a gate electrode thereof is connected to the enable signal terminal EM; a first pole of the seventh transistor T7 is connected to the initial signal terminal Vinit4, and a second pole is connected to the second pole of the sixth transistor T6 to the node N4 and the Reset signal terminal Reset 2. 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 pole of the sixth transistor T6 and the second power source terminal VSS.
Exemplarily, referring to fig. 11, fig. 11 is 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 Vint 2; the reset signal terminal Vint1 may be connected to one of the independent second reset signal lines 1201, and the reset signal terminal Vint2 may be connected to the other 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. Wherein, a first pole of the first transistor T1 is connected to the node N1, and a second pole is connected to the initial signal terminal Vinit1 and the Reset signal terminal Reset 1; a first pole of the second transistor T2 is connected to the first pole of the driving transistor T3, and a second pole is connected to the node N3; the grid is connected with a grid driving signal end Gate; the gate of the driving transistor T3 is connected to the node N2; a first pole of the fourth transistor T4 is connected to the Data signal terminal Data, a second pole is connected to the second pole of the driving transistor T3, and a Gate is connected to the Gate driving signal terminal Gate; a first pole of the fifth transistor T5 is connected to the first power signal terminal VDD, a second pole is connected to the second pole of the driving transistor T3, and a gate is connected to the enable signal terminal EM; a first electrode of the sixth transistor T6 is connected to the first electrode of the driving transistor T3, and a gate electrode thereof is connected to the enable signal terminal EM; a first pole of the seventh transistor T7 is connected to the initial signal terminal Vinit2, and a second pole is connected to the second pole of the sixth transistor T6 to the node N4 and the Reset signal terminal Reset 2. 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 pole of the sixth transistor T6 and the second power source terminal VSS.
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 from each other, and the third reset signal terminal and the fourth reset signal terminal are also independent from the first reset signal terminal and the second reset signal terminal. In this way, the electric signal loaded by the first driving signal line 500 can be compensated through the driving chip, and the electric signal loaded by the two first reset signal lines 1100 can be respectively compensated through the two reset signal ends, so that the light-emitting brightness of the first light-emitting device 100 is further approximately equal to the light-emitting brightness of the second light-emitting device 200, and thus the difference between the display effect of the light-transmitting display area 00a and the display effect of the normal display area 00b can be effectively reduced, and the overall display effect of the display panel 000 is better.
Optionally, please refer to fig. 12, where fig. 12 is a schematic connection diagram of a reset signal bus and a driving chip according to an embodiment of the present disclosure. The display panel 000 further has a non-display area 00c located at the periphery of the normal display area 00b, a first reset signal line bus 1300 and a second reset signal line bus (not shown) located in the non-display area 00c, wherein the first reset signal line 1100 is electrically connected to the first reset signal line bus 1300, and the second reset signal line 1200 is electrically connected to the second reset signal line bus. The plurality of first reset signal lines 1100 are electrically connected to the first reset signal line bus 1300 and connected to the driving chip 1400 through the first reset signal line bus 1300. The plurality of second reset signal lines 1200 are electrically connected to a second reset signal line bus and connected to the driving chip 1400 through 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 one driving chip 1400, and the first pixel driving circuit and the second pixel driving circuit can be distributed and controlled by sending reset signals through the one driving chip 1400.
In summary, the present application provides a display panel, including: the display device comprises a plurality of first light-emitting devices positioned in a light-transmitting display area, a plurality of second light-emitting devices, a plurality of first pixel driving circuits, a plurality of second pixel driving circuits, a plurality of first driving signal lines and a plurality of second driving signal lines, wherein the plurality of second light-emitting devices, the plurality of first pixel driving circuits and the plurality of second pixel driving circuits are positioned in a normal display area. Because the first driving signal line and the second driving signal line are arranged in an insulating mode, the driving chip can control the plurality of first light-emitting devices through the plurality of first driving signal lines independently and can control the plurality of second light-emitting devices through the plurality of second driving signal lines independently. So, can compensate the signal of telecommunication of first drive signal line loading alone through driver chip for the luminance of first luminescent device is approximately equal to the luminance of second luminescent device, and then can effectual reduction printing opacity display area's the display effect and the normal display area's difference between the display effect, makes this display panel's whole display effect better.
The embodiment of the present application further provides a display device, and the display device may be: any product or component with a 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.
Illustratively, as shown in fig. 13 and 14, fig. 13 is a schematic structural diagram of a display device provided in an embodiment of the present application, and fig. 14 is a cross-sectional view of the display device shown in fig. 13 at D-D'. 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.
The display device may have a light-transmissive display region 00a and a normal display region 00 b. The shape of the light-transmitting display area 00a may be circular, elliptical, or two ellipses arranged in parallel, which is not limited in the embodiments of the present application.
In an embodiment of the present application, the display device may further include: the photosensitive device 001. The light sensing device 001 may be an image sensor, a light sensor, a distance sensor, or the like in a camera. The light sensing device 001 is located at a side opposite to the display surface of the display panel 000. The orthographic projection of the light sensing surface 001a of the light sensing device 001 on the display panel is located in the light-transmitting display area 00 a. Because the light-transmitting display area 00a has better light-transmitting property, external ambient light can normally enter the light-receiving surface 001a of the photosensitive device 001 after passing through the light-transmitting display area 00a, so that the photosensitive device 001 can normally work.
It is noted that in the drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. Also, 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 also 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 also be present. In addition, it will also 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 there can be more than one intermediate layer or element. Like reference numerals refer to like elements throughout.
In this application, 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" means two or more unless expressly limited otherwise.
The above description is intended to be exemplary only, and not to limit the present application, and any modifications, equivalents, improvements, etc. made within the spirit and scope of the present application are intended to be included therein.
Claims (12)
1. A display panel, wherein the display panel has a transparent display region and a normal display region located at a periphery of the transparent display region, the display panel comprising:
a plurality of first light emitting devices arranged in an array and positioned in the light-transmitting display area;
a plurality of second light emitting devices arranged in an array 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 are positioned in the normal display area, one column of the first pixel driving circuits is used for being electrically connected with one column of the first light emitting devices, and one column of the second pixel driving circuits is used for being electrically connected with one column of the second light emitting devices;
the pixel driving circuit comprises a plurality of first pixel driving circuits, a plurality of second pixel driving circuits, a plurality of first driving signal lines and a plurality of second driving signal lines, wherein one first driving signal line is electrically connected with the first pixel driving circuits in the same row, and one second driving signal line is electrically connected with the second pixel driving circuits in the same row;
wherein the first driving signal lines and the second driving signal lines are arranged in an insulated manner, and the plurality of first driving signal lines and the plurality of second driving signal lines are all configured to: and is electrically connected with the driving chip.
2. The display panel according to claim 1, characterized in that the display panel further has: and the winding area is positioned between the light-transmitting display area and the normal display area, part of the second driving signal wires in the plurality of second driving signal wires are provided with a winding part, the winding part is positioned in the winding area, and the winding part and the first pixel driving circuit are arranged in an insulating way.
3. The display panel according to claim 2, wherein the second driving signal line having the winding portion further has: a first connection part electrically connected to one end of the winding part, and a second connection part electrically connected to the other end of the winding part;
the first connecting part is electrically connected with each second pixel driving circuit which is positioned on one side of the light-transmitting display area in the second pixel driving circuits in a row; the second connecting part is electrically connected with each second pixel driving circuit which is positioned on the other side of the light-transmitting display area in the second pixel driving circuits in a row.
4. The display panel according to claim 2, wherein the plurality of first driving signal lines include: each first driving signal line in one driving signal line group is arranged on one side of the light-transmitting display area, and each first driving signal line in the other driving signal line group is arranged on the other side of the light-transmitting display area;
wherein the second driving signal line having the winding portion is arranged between the two driving signal line groups.
5. The display panel according to any one of claims 1 to 4, characterized by further comprising: 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;
wherein the first reset signal line and the second reset signal line are insulated from each other.
6. The display panel according to claim 5, wherein the display panel further has a non-display region located at a periphery of the normal display region, the display panel further comprising: the display device comprises a first reset signal line bus and a second reset signal line bus which are positioned in the non-display area, wherein the first reset signal line is electrically connected with the first reset signal line bus, and the second reset signal line is electrically connected with the second reset signal line bus.
7. The display panel according to claim 5, wherein the first pixel driving circuits have two reset signal terminals, the number of the first reset signal lines electrically connected to the first pixel driving circuits in the same row is two, the two first reset signal lines are insulated, one of the first reset signal lines is electrically connected to one of the reset signal terminals of the first pixel driving circuits in the same row, and the other of the first reset signal lines is electrically connected to the other of the reset signal terminals of the first pixel driving circuits in the same row.
8. The display panel according to claim 5, wherein the second pixel driving circuits have two reset signal terminals, the number of the second reset signal lines electrically connected to the second pixel driving circuits in the same row is two, the two second reset signal lines are insulated, one of the second reset signal lines is electrically connected to one of the reset signal terminals of the second pixel driving circuits in the same row, and the other of the second reset signal lines is electrically connected to the other of the reset signal terminals of the second pixel driving circuits in the same row.
9. The display panel according to any one of claims 1 to 4, characterized by further comprising: and the first pixel driving circuits in one row are electrically connected with the first light-emitting devices in one row through the transparent connecting lines.
10. The display panel according to any one of claims 1 to 4, wherein the display panel further comprises: the virtual pixel driving circuits are arranged in a plurality of arrays in the normal display area and are arranged in an insulated mode with the signal lines in the display panel;
the pixel driving circuits in the normal display area comprise a plurality of first-class pixel driving circuits and a plurality of second-class pixel driving circuits, and the plurality of first-class pixel driving circuits comprise: a plurality of the first pixel driving circuits and a plurality of the dummy pixel driving circuits, the plurality of second type pixel driving circuits comprising: 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 uniformly distributed in the normal display area, and the plurality of columns of the first-type pixel driving circuits and the plurality of columns of the second-type pixel driving circuits are distributed in a staggered mode.
11. The display panel according to claim 10, wherein the ratio of the number of columns of the second type of pixel driving circuits to the number of columns of the first type of pixel driving circuits is 3: 1.
12. a display device, comprising: a light sensing device and the display panel of any one of claims 1 to 11, wherein the light sensing 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 light sensing device on the display panel is located in the light-transmitting display region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210288150.1A CN114649394A (en) | 2022-03-22 | 2022-03-22 | Display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210288150.1A CN114649394A (en) | 2022-03-22 | 2022-03-22 | Display panel and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114649394A true CN114649394A (en) | 2022-06-21 |
Family
ID=81995437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210288150.1A Pending CN114649394A (en) | 2022-03-22 | 2022-03-22 | Display panel and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114649394A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024011776A1 (en) * | 2022-07-13 | 2024-01-18 | 武汉天马微电子有限公司 | Display panel and display device |
-
2022
- 2022-03-22 CN CN202210288150.1A patent/CN114649394A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024011776A1 (en) * | 2022-07-13 | 2024-01-18 | 武汉天马微电子有限公司 | Display panel and display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113383382B (en) | Array substrate, display panel, spliced display panel and display driving method | |
| CN112117320B (en) | Display panel and display device | |
| CN111668278A (en) | Display panel and display device | |
| CN110690265A (en) | Display substrate, manufacturing method thereof and display device | |
| CN111446282B (en) | Display substrate and display device | |
| CN111785853A (en) | Display panel and display device | |
| CN113870713B (en) | Display panel and display device | |
| US20220376003A1 (en) | Display panel and display apparatus | |
| CN113571570A (en) | Display panel and display device | |
| US11818933B2 (en) | Display panel and display device with virtual pixel circuit electrically connected to light emitting device in display area | |
| CN114725173A (en) | Display panel and display device | |
| CN114784077A (en) | Display panel and display device | |
| CN115346486A (en) | Display panel and display device | |
| KR20230147741A (en) | Display panels and display devices | |
| US20240057421A1 (en) | Array base plate, display panel and display apparatus | |
| CN114649394A (en) | Display panel and display device | |
| EP4319536A1 (en) | Display device | |
| US20230189596A1 (en) | Display panel and display device | |
| CN111415947A (en) | Display substrate, manufacturing method thereof, display panel and electronic device | |
| CN115273741A (en) | Display panel, display device, and pixel driving method | |
| CN113764501A (en) | Display panel and display device | |
| CN113485586A (en) | Touch control display panel | |
| JP2023517218A (en) | Large panel display with reduced routing line resistance | |
| CN113707701B (en) | Display panel and display device | |
| US11910678B1 (en) | Display panel and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |