EP4322146A1

EP4322146A1 - Display panel and display device

Info

Publication number: EP4322146A1
Application number: EP22810200.0A
Authority: EP
Inventors: Jian Bai; Zhijia Cui; Haokai LI; Zhou SUN
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-05-28
Filing date: 2022-04-02
Publication date: 2024-02-14
Also published as: WO2022247467A1; CN215868587U

Abstract

A display panel (100) and a display device (10). The display panel (100) comprises: a first display region (101) which comprises a plurality of first pixel units, and a second display region (102) which is arranged adjacent to the first display region (101), wherein the second display region (102) comprises a plurality of second pixel units, and the load of the second pixel units is smaller than the load of the first pixel units; a first driver circuit (130), which is connected to the first pixel units separately, and which employs a pulse width modulation dimming mode for use in driving the first pixel units to emit light; and second driver circuits (140), which are connected to the second pixel units separately, and which employ one of the pulse width modulation dimming mode and a DC dimming mode according to the target brightness of the display panel (100) for use in driving the second pixel units to emit light.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to China Patent Applicant No. 202121188394X, filed May 28, 2021 , entitled "DISPLAY PANEL AND DISPLAY DEVICE", which is herein incorporated by reference in its entirety.

TECHNICAL FIELD

The present disclosure relates to the field of display technologies, and in particular to a display panel and a display device.

BACKGROUND

The statements herein are merely provided as background information related to the present disclosure and are not necessarily considered as prior art.
With a continuous development of technology, various sorts of electronic devices have emerged in an endless stream, providing great convenience for people's daily life and entertainment. At present, the electronic devices are constantly evolved to have larger screens. To improve a screen-to-body ratio of the electronic devices and truly realize a full screen display in the electronic devices, an under-display camera technology has attracted a lot of attention.
Normally, a display screen of an electronic device can be divided into a first display region and a second display region. The second display region is located in an area where an under-display camera is disposed. A light-emitting device of the second display region is usually disposed in a camera range of the under-display camera. As a result, a brightness of the first display region is inconsistent with a brightness of the second display region and a display quality of the electronic devices is therefore reduced.

SUMMARY OF THE DISCLOSURE

Some embodiments of the present disclosure provide a display panel and a display device.
The display panel may include:

a first display region, including a plurality of first pixel units;
a second display region, adjacent to the first display region and including a plurality of second pixel units, where a load of the plurality of second pixel units may be smaller than a load of the plurality of first pixel units;
a first drive circuit, connected to each of the plurality of first pixel units and configured to drive each of the plurality of first pixel units to emit light using a pulse width modulation dimming mode; and
a second drive circuit, connected to each of the plurality of second pixel units and configured to drive each of the plurality of second pixel units to emit light using either the pulse width modulation dimming mode or a direct current dimming mode and based on a target brightness of the display panel.

The display device may include a photo sensor and the aforementioned display panel. The photo sensor may be disposed in correspondence with the first display region.
Details about one or more embodiments of the present disclosure may be provided in the following drawings and descriptions. Other characteristics, purposes and advantages of the present disclosure may be clearly illustrated based on the specification, drawings and claims.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to clearly illustrate the technical solutions in the present disclosure, the following briefly illustrates drawings associated with embodiments of the present disclosure. Obviously, the drawings described as follows are only for some embodiments of the present disclosure. For an ordinary skilled in the art, other drawings may be derived based on the following drawings without creative work.

FIG. 1 is a structural schematic view of a display device according to an embodiment of the present disclosure.
FIG. 2 is a schematic diagram of wiring distribution of a first display region according to an embodiment of the present disclosure.
FIG. 3 is a schematic circuit diagram of a pixel unit according to an embodiment of the present disclosure.
FIG. 4 is a schematic distribution diagram of a drive circuit in a display panel according to an embodiment of the present disclosure.
FIG. 5 is a schematic circuit diagram of a pixel driving circuit according to an embodiment of the present disclosure.
FIG. 6 is a schematic distribution diagram of a first drive circuit in a first display region according to an embodiment of the present disclosure.
FIG. 7 is a schematic distribution diagram of a first drive circuit in a first display region according to another embodiment of the present disclosure.
FIG. 8 is a schematic distribution diagram of a second drive circuit in a second display region according to an embodiment of the present disclosure.
FIG. 9 is a timing diagram of the first display region and the second display region according to an embodiment of the present disclosure.
FIG. 10 is a schematic distribution diagram of the first drive circuit and the second drive circuit in a display panel according to an embodiment of the present disclosure.

DETAILED DESCRIPTION

In order to facilitate an understanding of the embodiments of the present disclosure, the embodiments of the present disclosure may be described in a more comprehensive way as below based on drawings. Preferred embodiments of the present disclosure are provided in the drawings. However, the present disclosure may be realized in many different formats and is not limited to the embodiments described herein. Instead, the embodiments are provided to illustrate the present disclosure in a more thorough and comprehensive way.
Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art. Terms used herein are used only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present disclosure. The term "and/or" as used herein includes any and all combinations of one or more of the relevant listed items.
It can be understood that the terms "first", "second", etc., as used herein, may be used to describe various elements, but these elements are not limited by these terms. These terms are used only to distinguish a first element from another element. For example, without departing from a scope of the present disclosure, a first drive circuit may be referred to as a second drive circuit, and similarly, the second drive circuit may be referred to as the first drive circuit. The first drive circuit and the second drive circuit are both drive circuits, but they are not an identical drive circuit.
Furthermore, the terms "first" and "second" are used only for the purpose of describing and may not be understood to indicate or imply a relative importance or implicitly specify the number of technical features. Thus, a feature defined with the terms "first" or "second" may expressly or impliedly include at least one feature as such. In the description of the present disclosure, "plurality" means at least two, e.g., two, three, etc., unless otherwise specified.
The embodiments of the present disclosure provide a display device, and the display device may be a smartphone, a tablet computer, a gaming device, an augmented reality (AR) device, a laptop, a desktop computing device, a wearable device, and so on. For an easier understanding, the display device is illustrated as an example of a cell phone below. As illustrated in FIG. 1 and FIG. 4, the display device 10 may include a display panel 100. A display area of the display panel 100 may include a first display region 101 and a second display region 102 adjacent to the first display region 101. In an embodiment, a shape of the first display region 101 may be a circle, a rectangle, an ellipse, a polygon, an irregular shaped shape, etc., and the present disclosure does not limit the shape of the first display region 101. In an embodiment, the first display region 101 may be disposed in any region of the display area, for example, the first display region 101 may be disposed in the middle of the display area, in a left side of the display area close to an edge of the display area, or in a right side of the display area close to an edge of the display area. The embodiments of the present disclosure may not limit a location of the first display region 101.
Further as illustrated in FIG. 1, a photo sensor 103 is provided in the display device 10 and at least part of the photo sensor 103 may be provided corresponding to the first display region 101. The photo sensor 103 may perform testing and controlling based on optical parameters by receiving lights. The photo sensor 103 may be disposed under the first display region 101 and the photo sensor 103 may be configured to emit and/or receive optical signals through the first display region 101 of the display panel 100. In other words, the first display region 101 may be disposed above the photo sensor 103 and the term "above" used herein refers to a direction of a display screen from a back of the display device. The photo sensor 103 may be a camera, an ambient light sensor, an optical distance sensor (e.g., an infrared sensor, a laser sensor, a proximity sensor, a distance sensor, an optical distance sensor), a structured light module, a Time of flight (TOF) lens module, an optical fingerprint sensor, and so on. A variety of above-described photo sensor 103 are used for exemplary illustration only, and are not used to specifically limit a scope of the present disclosure. For an easier explanation, the photo sensor 103 is illustrated as an example of a camera in the embodiments of the present disclosure.
As illustrated in FIG. 2, the first display region 101 of the display panel may include a plurality of first pixel units (not illustrated), and the second display region 102 includes a plurality of second pixel units (not illustrated). The plurality of first pixel units and the plurality of second pixel units may be arranged in arrays, where the arrays have rows and columns. A direction of the rows may be defined as a first direction of the display panel and a direction of the columns may be defined as a second direction of the display panel. Each of the plurality of first pixel unit and each of the plurality of second pixel unit may include a light-emitting device and a pixel driving circuit connected to the light-emitting device for driving the light-emitting device. The light-emitting device may be an organic light-emitting diode (OLED), a quantum dot light emitting diodes (QLED), a micro LED, and so on. Each embodiment of the present disclosure is illustrated by taking the light-emitting device as the OLED for an example. Each the light-emitting device may be an OLED of a different color, such as a red OLED, a green OLED, and a blue OLED, etc. Pixel driving circuits of the light-emitting devices with different colors may be the same, but materials of light-emitting layers of the light-emitting devices of different colors are different, so that a display of different colors may be realized and the display device may have a full-color display.
In a real-life application, when the display device is a device with the display panel and an under-display camera, the first display region is disposed above the camera. For an easier illustration, as illustrated in FIG. 3, a light-emitting device disposed in the first display region may be referred to as a first light-emitting device 110a, and a pixel driving circuit that drives the first light-emitting device 110a may be referred to as a first pixel driving circuit 120a. Accordingly, a light-emitting device disposed in the second display region may be referred to as a second light-emitting device, and a pixel driving circuit that drives the second light-emitting device may be referred to as a second pixel driving circuit.
Further as illustrated in FIG. 2, in order to make pixels per inch (PPI) of the first display region 101 and the PPI of the second display region 102 become the same, e.g., 400 PPI, the first pixel driving circuit 120a may be generally disposed at a periphery of the first display region 101. An area in which the first pixel driving circuit 120a is disposed may refer to as a transition area 104 or an outer area. The first pixel driving circuit 120a disposed in the transition area 104 may be electrically connected to the first light-emitting device 110a via a metal wire L. The metal wire L may be a transparent metal wire, e.g., an indium tin oxide (ITO) metal wire, an aluminum zinc (AZO) metal wire, and so on.
Since the first pixel driving circuit 120a of different first light-emitting device 110a has different locations in the display panel, the length of the metal wire L of the first light-emitting device 110a differs and a RC loading generated on the metal wire L differs. For example, the RC loading in the first display region 101 gradually becomes larger from the outside to the inside, resulting in a non-uniform display between the first display region 101 and the second display region 102, which reduces a display quality of the display device.
In order to solve the aforementioned problem, the embodiments of the present disclosure provide the display panel that may adjust a brightness of the first display region 101 and a brightness of the second display region 102 respectively. The first display region 101 may be adjusted based on a Pulse Width Modulation (PWM) dimming mode, which has a high drive current and can enhance the brightness of the first display region 101. The second display region 102 may be adjusted by selecting a suitable dimming mode (e.g., the PWM dimming mode or a DC dimming mode) based on an intensity of a target brightness. In this way, a situation in which the brightness of the first display region 101 is relatively low or a situation in which the brightness of the second display region 102 is relatively high may be avoided, so that the brightness of the first display region 101 may be consistent with the brightness of the second display region 102 and the display quality of the display panel may be improved.
Further as illustrated in FIG. 4, in an embodiment, the display panel may include a display area AA and a non-display area NAA disposed around the display area. The display panel may further include a first drive circuit 130 disposed in the non-display area NAA and a second drive circuit 140 disposed in the non-display area NAA. The first drive circuit 130 is connected to each of the plurality of first pixel units for driving the plurality of first pixel units to emit light by the PWM dimming mode. The first drive circuit 130 may provide a drive signal to the first pixel driving circuit to control the first pixel driving circuit to drive the first light-emitting device connected the first driver pixel to emit light. The PWM dimming mode refers to adjust the brightness by controlling a pulse width of a switch signal of each transistor in the first pixel driving circuit and the PWM dimming may be realized by changing a number of pulses and the pulse width of the switch signal of the transistor to be turned on during a light-emitting phase to control a light-emitting time, so as to achieve a purpose of adjusting the brightness.
As illustrated in FIG. 5, a pixel driving circuit is illustrated as an example of a structure of 7T1C for an easier explanation. The pixel driving circuit may include a drive transistor T1, a data writing transistor T2, a gate reset transistor T4, an anode reset transistor T7, a threshold compensation transistor T3, a first light-emitting control transistor T5, a second light-emitting control transistor T6, and a storage capacitance C 1. A gate of the data writing transistor T2, a gate of the threshold compensation transistor T3, and a gate of the anode reset transistor T7 may all be used for receiving a second scan signal, i.e., Scan(n). A first pole of the data writing transistor T2 is connected to a data signal line to receive a data signal, i.e., Data, and a second pole of the data writing transistor T2 is connected to a first pole of the drive transistor T1. A gate of the gate reset transistor T4 is configured to receive a first scan signal, i.e., Scan(n-1).
In the PWM dimming mode, the Data provided by the data signal line remains unchanged. The data writing transistor T2 may conduct during a period of time in which the Scan(n) provided by the scan signal line is turned on. In this way, the Data may be transmitted to the drive transistor T1 and the drive transistor T1 may be controlled to be turned on, while a supply voltage VDD provided at a supply voltage terminal is kept unchanged. In this process, the drive transistor T1 of each the light-emitting devices 110 is turned on to a same degree. Therefore, the brightness of the light-emitting devices 110 may be adjusted by simply adjusting a duty cycle of a light-emitting control signal EM applied to a gate of the second light-emitting control transistor T6 to change a light-emitting time of the light-emitting devices 110 in each frame. The EM signal may be a PWM signal. The PWM signal is an AC signal, provided based on a target brightness of a pixel, with a certain frequency and a certain duty cycle. Since the frequency of the PWM signal may be much higher than a frequency that human's eyes might perceive, the brightness of the pixel may be altered with a change of the duty cycle of the PWM signal in terms of visual effect.
The pixel driving circuit in the embodiments of the present disclosure is not limited to the above-described "7T1C" pixel structure, but may also include a variety of other pixel structures, such as "2T1C", "3T1C ", "6T1C", "6T2C", "7T2C", or "8T1C " and so on.
The second drive circuit 140 may be connected to each of the plurality of second pixel units respectively and may be used to drive each of the plurality of pixel units in the second display region 102 to emit light by adopting the PWM dimming mode or the direct current (DC) dimming mode according to a target brightness of the display panel. The second drive circuit 140 may provide a drive signal to the second pixel driving circuit to control the second pixel driving circuit to drive the second light-emitting devices connected to the second pixel driving circuit to emit light.
Further as illustrated in FIG. 5, a current of light-emitting device may have a following expression: $I_{oled} = k {(VDD - V_{DATA})}^{2}$
The I_oled refers to the current of the light-emitting device and k refers to a coefficient. Based on the expression, the supply voltage VDD and the voltage V_DATA of the data signal, Data, may play a crucial role in determining the current of the light-emitting device. In the DC dimming mode, an adjustment of brightness may be realized by altering V_DATA of the Data to adjust the current of the light-emitting devices while the VDD remains unchanged. When scanning the plurality of pixel units in each row, Data may perform changes in voltage magnitude according to the target brightness of each of the plurality of pixel units. When the brightness is controlled to be lowered, the V_DATA of Data may need to be reduced; when the brightness is controlled to be raised, the V_DATA of Data may need to be increased.
The display panel may pre-build and store a corresponding relationship between a target brightness and a preset dimming mode. When the target brightness is L1, the PWM dimming mode may be correspondingly adopted to adjust a brightness of a respective plurality of pixel units in the second display region 102. When the target brightness is L2, the DC dimming mode may be correspondingly adopted to adjust a brightness of a respective plurality of pixel units in the second display region 102.
The display panel provided in the embodiments of the present disclosure may include the first display region 101, the second display region 102, the first drive circuit 130, and second drive circuit 140. The first drive circuit 130 may adopt the PWM dimming mode to drive each of the plurality of first pixel units in the first display region 101 to emit light. The second drive circuit 140 may adopt, in accordance with a target brightness of the display panel, the PWM dimming mode or the DC dimming mode to drive each of the plurality of second pixel units in the second display region 102 to emit light. Therefore, the brightness of the first display region 101 and the brightness of the second display region 102 may be adjusted respectively. Furthermore, the first drive circuit 130 may adopt the PWM dimming mode to change the brightness of each of the plurality of first pixel units in the first display region 101. Since the first drive circuit 130 has a high drive current, the brightness of the first display region 101 may be raised; The second drive circuit 140 may adopt the PWM dimming mode or the DC dimming mode based on the target brightness of the current display panel. In this way, a flexibility in changing the brightness of the respective plurality of second pixel units in the second display region 102 may be realized, a brightness difference between a main screen and a secondary screen may be eliminated, and an effect for protecting eyes may be ensured in the second display region 102.
In an embodiment, when the target brightness is less than a first threshold value, the second drive circuit 140 may adopt the PWM dimming mode to drive the respective plurality of pixel units in the second display region 102 to emit light. When the target brightness is greater than a second threshold value, the second drive circuit 140 may adopt the DC dimming mode to drive the respective plurality of pixel units in the second display region 102 to emit light. The first threshold value is less than or equal to the second threshold value. The first threshold value and the second threshold value are not further limited in the embodiments of the present disclosure and may be set according to actual needs.
In some embodiments of the present disclosure, the first drive circuit 130 in the first display region 101 may adopt the PWM dimming mode to adjust the brightness of each of the plurality of the pixel units, and the second drive circuit 140 in the second display region 102 may adopt either the PWM dimming mode or the DC dimming mode to adjust the brightness of each of the plurality of the second pixel units. As illustrated in Table 1, as for the second display region 102, if the target brightness is a high brightness, the DC dimming mode may be adopted; if the target brightness is a low brightness, the PWM dimming mode may be adopted.
Table 1 indicates corresponding dimming modes based on different target brightness in the first display region and the second display region respectively.

target brightness 500nit 100nit 10nit 2nit

first display region PWM3 PWM4 PWM5 PWM2

second display region DC1 DC2 PWM 1 PWM2
In an embodiment, the display panel may further store the corresponding relationships between the target brightness and dimming parameters of the dimming modes based on different display regions. As for the first display region 101, a mapping relationship between the target brightness and the dimming parameter PWM3 may be stored in advance. If the target brightness is 100 nit, the first drive circuit 130 may output the light-emitting control signal EM as a signal of PWM4. As for the second display region 102, the mapping relationship between the target brightness and the dimming parameter PWM3 and a mapping relationship between the target brightness and the dimming parameter V_DATA may be stored in advance. If the target brightness is 100nit, the second drive circuit 140 may output the light-emitting control signal EM and the dimming parameter V_DATA may be adjusted to correspond to a DC2 dimming mode.
In the embodiments of the present disclosure, the first drive circuit 130 and the second drive circuit 140 may be configured correspondingly to change the brightness of the respective plurality of pixel units in the first display region 101 and the brightness of the respective plurality of pixel units in the second display region 102, respectively. The first drive circuit 130 may adopt the PWM dimming mode of a strong driving capability for achieving a full brightness as the first drive circuit 130 has a high drive current that may be able to enhance the brightness of the first display region 101. The second drive circuit 140 may adopt the DC dimming mode to change the brightness when the target brightness is the high brightness so that an eye-protecting effect may be activated, a defect of a rolled-up screen may be avoided, and the display quality may be further improved. When the target brightness is the low brightness, the PWM dimming mode may be adopted for changing the brightness to avoid an occurrence of a non-uniform brightness in the row direction of the display panel due to a large difference between characteristics of the transistors. Furthermore, by adopting the first drive circuit 130 and the second drive circuit 140 for changing the brightness of the first display region 101 and the brightness of the second display region 102, respectively, it is possible to eliminate a difference between an overall brightness of the first display region 101 and an overall brightness of the second display region 102 so that the brightness of the first display region 101 may be consistent with the brightness of the second display region 102 and the display quality of the display panel may be improved.
Further as illustrated in FIG. 4, in an embodiment, the display panel may further include a display driving unit 150 disposed in the non-display area NAA. The display driving unit 150 may be a display driver IC (DDIC). In particular, a board of the display driving unit 150 may be configured with a first set of drive terminals and a second set of drive terminals (not illustrated in the figure). The first set of drive terminals may be configured to output a first set of drive signals. The first set of drive terminals may include a first scan trigger signal terminal and a first light-emitting trigger signal terminal. The first set of drive signals may include a first scan trigger signal output by the first scan trigger signal terminal and a first light-emitting trigger signal output by the first light-emitting trigger signal terminal. Further, the first set of drive signals may also include a plurality of first clock signals output by a plurality of first clock terminals. Accordingly, the second set of drive terminals may be configured to output a second set of drive signals. The second set of drive signals may include a second scan trigger signal output by a second scan trigger signal terminal and a second light-emitting trigger signal output by a second light-emitting trigger signal terminal. Furthermore, the second set of drive signals may also include a plurality of second clock signals output by a plurality of second clock terminals.
The first drive circuit 130 may be connected to the first set of drive terminals of the display driving unit 150 and each of the plurality of first pixel units connected to the first drive circuit 130 may be driven to emit light according to the first set of drive signals output from the first set of drive terminals. Accordingly, the second drive circuit 140 may be connected to the second set of drive terminals of the display driving unit 150 and each of the plurality of second pixel units connected to the second drive circuit 140 may be driven to emit light according to the second set of drive signals output from the second set of drive terminals. Although a connecting relationship between the display driving unit 150 and the first drive circuit 130 and a connecting relationship between the display driving unit 150 and the second drive circuit 140 are not illustrated in FIG. 4, it may not indicate that the display driving unit 150 is not connected to the first drive circuit 130 and the second drive circuit 140, respectively.
In an embodiment, the first scan trigger signal may be the same as the second scan trigger signal, while the first light-emitting trigger signal may be different from the second light-emitting trigger signal. That is, the first drive circuit 130 and the second drive circuit 140 may share a common set of scan trigger signals, but the first drive circuit 130 and the second driver light-emitting trigger signal are independent of each other, i.e., not shared, to realize a separate drive light-emitting between the first display region 101 and the second display region 102.
In an embodiment, the first scan trigger signal may be different from the second scan trigger signal and the first light-emitting trigger signal may be different from the second light-emitting trigger signal. That is, a scan trigger signal of the first drive circuit 130 and a light-emitting trigger signal of the first drive circuit 130 are independent of a scan trigger signal of the second drive circuit 140 and a light-emitting trigger signal of the second drive circuit 140, respectively, i.e., not shared, so as to realize the separate drive light-emitting between the first display region 101 and the second display region 102.
As illustrated in FIG. 6 and FIG. 7, in an embodiment, the plurality of second pixel units in the first display region 101 may be divided into a first pixel block 101a and a second pixel block 101b. The first pixel block 101a and the second pixel block 101b may be arrayed along the first direction of the display panel and disposed in an axisymmetric direction, where the axisymmetric direction is a same direction as the second direction and the first direction is perpendicular to the second direction. In the embodiments of the present disclosure, the first direction may be understood as a row direction and the second direction may be understood as a column direction.
The display panel may further include a plurality of first gate lines 111 disposed in the first pixel block 101a, a plurality of first light-emitting control lines 112 disposed in the first pixel block 101a, a plurality of second gate lines 113 disposed in the second pixel block 101b, and a plurality of second light-emitting control lines 114 disposed in the second pixel block 101b. The plurality of first gate lines 111 may be connected to each of the plurality of first pixel units of a same pixel row in the first pixel block 101a. The plurality of second gate lines 113 may be connected to each of the plurality of first pixel units of a same pixel row in the second pixel block 101b. The plurality of first light-emitting control lines 112 may be connected to each of the plurality of the first pixel unit of at least one pixel row in the first pixel block 101a. The plurality of second light-emitting control lines 114 may be connected to each of the plurality of the first pixel unit of at least one pixel row in the second pixel block 101b.
The first drive circuit may be understood as a gate driver on array circuit, or also be referred to as a GOA circuit. The first drive circuit 130 may include a plurality of first gate driving units 131 that are cascaded, a plurality of second gate driving units 132 that are cascaded, a plurality of first light-emitting control units 133 that are cascaded, and a plurality of second light-emitting control units 134 that are cascaded. Each of the gate driving units in the first drive circuit 130 may include a first gate input terminal and a first gate output terminal. The first gate output terminal may be configured to output the first scan signal. Each of the light-emitting control units in the first drive circuit 130 may include a first light-emitting input terminal and a first light-emitting output terminal, where the first light-emitting output terminal is configured to output a first light-emitting control signal.
The first gate input terminal of a first stage of the plurality of first gate driving units 131 may be electrically connected to the first scan trigger signal terminal. In each of two adjacent stages of the plurality of first gate driving units 131, the first gate input terminals of the plurality of first gate driving units 131 in a next stage may be electrically connected to the first gate output terminals of the plurality of first gate driving units 131 of a previous stage. Each of the plurality of first gate driving units 131 may be configured to drive a corresponding one of the plurality of first gate lines 111 by adopting a unilateral driving mode according to the first scan trigger signal. That is, a first gate output terminal of each stage of each of the plurality of first gate driving units 131 may be correspondingly connected to the corresponding one of the plurality of first gate lines 111 to send the first scan signal, Scan(n), to the corresponding one of the plurality of first gate lines 111 connected thereto based on a first description trigger signal to realize a single-row unilateral drive to the corresponding one of the plurality of first gate lines 111.
The first gate input terminal of a first stage of the plurality of second gate driving units 132 may be electrically connected to the first scan trigger signal terminal. In each of two adjacent stages of the plurality of second gate driving units 132, the first gate input terminals of the plurality of second gate driving units 132 in a next stage may be electrically connected to the first gate output terminals of the plurality of second gate driving units 132 of a previous stage. Each of the plurality of second gate driving units 132 may be configured to drive a corresponding one of the plurality of second gate lines 113 by adopting the unilateral driving mode according to the first scan trigger signal. That is, a first gate output terminal of each stage of each of the plurality of second gate driving units 132 may be correspondingly connected to the corresponding one of the plurality of second gate lines 113 to send the first scan signal, Scan(n), to the corresponding one of the plurality of second gate lines 113 connected thereto based on the first description trigger signal to realize the single-row unilateral drive to the corresponding one of the plurality of second gate lines 113.
The first light-emitting input terminal of a first stage of the plurality of first light-emitting control units 133 may be electrically connected to the first light-emitting trigger signal terminal. In each of two adjacent stages of the plurality of first light-emitting control units 133, the first light-emitting input terminals of the plurality of first light-emitting control units 133 in a next stage may be electrically connected to the first light-emitting output terminals of the plurality of first light-emitting control units 133 of a previous stage. The plurality of first gate driving units 131 may be configured to drive the plurality of first gate lines 111 by adopting the unilateral driving mode according to the first scan trigger signal. That is, a first light-emitting output terminal of each stage of the plurality of first light-emitting control units 133 may be correspondingly connected to the plurality of first light-emitting control lines 112 to send the first light-emitting control signal to the plurality of first light-emitting control lines 112 connected thereto based on the first light-emitting trigger signal to realize a unilateral drive to the plurality of first light-emitting control lines 112.
The first light-emitting input terminal of a first stage of the plurality of second light-emitting control units 134 may be electrically connected to the first light-emitting trigger signal terminal. In each of two adjacent stages of the plurality of second light-emitting control units 134, the first light-emitting input terminals of the plurality of second light-emitting control units 134 in a next stage may be electrically connected to the first light-emitting output terminals of the plurality of second light-emitting control units 134 of a previous stage. A first light-emitting output terminal of each stage of the plurality of second light-emitting control units 134 may be correspondingly connected to the plurality of second light-emitting control lines 114 to send the first light-emitting control signal to the plurality of second light-emitting control lines 114 connected thereto based on the first light-emitting trigger signal to realize the unilateral drive to the plurality of first light-emitting control lines 112.
In the embodiments of the present disclosure, due to a small number of the first pixel units in the first display region 101, the first drive circuit 130 may drive both the gate lines and the light-emitting control lines in a unilateral driving manner to meet a requirement of drive. In addition, a gate connecting line for connecting the plurality of first gate driving units 131 and the plurality of second gate driving units 132 in the first display region 101 may be avoided to reduce a bezel width of the first display region 101, and thus a screen-to-body ratio regarding the first display region 101 may be improved.
In an embodiment, when the plurality of first light-emitting control lines 112 are connected to each of the plurality of first pixel units in two adjacent rows in the first pixel block 101a and the plurality of second light-emitting control lines 114 are connected to each of the plurality of first pixel units in two adjacent rows in the second pixel block 101b, the first drive circuit 130 may drive the plurality of first light-emitting control lines 112 by adopting a dual-row, unilateral driving mode, and drive the plurality of second light-emitting control lines 114 by adopting the dual-row, unilateral driving mode. Due to a small number of the first pixel units in the first display region 101, by adopting the dual-row, unilateral driving mode, the requirement of drive may be met and a drive efficiency may be ensured.
In an embodiment, a first gate output terminal of the first gate driving unit 131 and a first gate output terminal of the second gate driving unit 132 located in a same row as the plurality of first gate driving unis 131 may be connected to each other, i.e., the first gate line 111 and the second gate line 113 located in a same row are connected. Therefore, the first gate line 111 and the second gate line 113 located in the same row may be driven by the first gate driving unit 131 and the second gate driving unit 132 jointly to realize a bilateral drive for the first gate line 111 and the second gate line 113. Correspondingly, a first light-emitting output terminal of the first light-emitting control unit 133 and a first light-emitting output terminal of the second light-emitting control unit 134 located in a same row as the first light-emitting control unit 133 may be connected to each other, so that the first light-emitting control line 112 and the second light-emitting control line 114 located in a same row are connected to realize a bilateral drive for the first light-emitting line 112 and the second light-emitting line 114.
As illustrated in FIG. 8, in an embodiment, the second display region may include a first sub-display region 102a and a second sub-display region 102b. The first sub-display region 102a may be disposed on at least one side of the first display region 101. The first sub-display region 102a and the first display region 101 may be arranged in a row along the first direction of the display panel. That is, the at least one first pixel unit disposed in the first display region 101 and the at least one second pixel unit disposed in the first sub-display region 102a may be arranged in a same line along the first direction. In some embodiments, the first sub-display region 102a may be disposed on both sides of the first display region 101, or, the first sub-display region 102a may be disposed around the first display region 101. In the embodiments of the present disclosure, a specific location of the first sub-display region 102a may not be limited.
The second drive circuit may include a first sub-drive circuit and a second sub-drive circuit. The first sub-drive circuit may be connected to the second set of drive terminals and each of the plurality of second pixel units of the first sub-display region 102a, respectively, to drive each of the plurality of second pixel units of the first sub-display region 102a to emit light based on the second set of drive terminals. The second sub-drive circuit may be connected to the second set of drive terminals and each of the plurality of second pixel units of the second sub-display region 102b, respectively, to drive each the plurality of second pixel units of the second sub-display region 102b to emit light based on the second set of drive signals. In the embodiments of the present disclosure, the first sub-drive circuit and the second sub-drive circuit may receive a same second set of drive signals.
A driving mode of the first sub-drive circuit and a driving mode of the second sub-drive circuit may be the same or different. The first sub-drive circuit may drive each drive line (e.g., gate lines, light-emitting control lines) disposed in the first sub-display region 102a in a unilateral driving manner, while the second sub-drive circuit may drive each drive line (e.g., gate lines, light-emitting control lines) disposed in the second sub-display region 102b in a bilateral driving manner.
Further as illustrated in FIG. 8, in an embodiment, the plurality of second pixel units of the first sub-display region 102a may be divided into a third pixel block 1021 and a fourth pixel block 1022. The third pixel block 1021, the first pixel block 101a, the second pixel block 101b, and the fourth pixel block 1022 may be arranged along the first direction (i.e., the row direction) of the display panel. The third pixel block 1021 and the fourth pixel block 1022 may be symmetrically disposed on both sides of the first display region 101. The display panel may further include a plurality of third gate lines 115 disposed in the third pixel block 1021, a plurality of third light-emitting control lines 116 disposed in the third pixel block 1021, a plurality of fourth gate lines 117 disposed in the fourth pixel block 1022, and a plurality of fourth light-emitting control lines 118 disposed in the fourth pixel block 1022. The third gate line 115 may be connected to each of the plurality of second pixel units in a same pixel row in the third pixel block 1021. The fourth gate line 117 may be connected to each of the plurality of second pixel units in a same pixel row in the fourth pixel block 1022. The third light-emitting control line 116 may be connected to each of the plurality of second pixel units in at least one pixel row in the third pixel block 1021. The fourth light-emitting control line 118 may be connected to each of the plurality of second pixel units in at least one pixel row in the fourth pixel block 1022.
The first sub-drive circuit may include a plurality of third gate driving units 141 that are cascaded, a plurality of fourth gate driving units 142 that are cascaded, a plurality of third light-emitting control units 143 that are cascaded, and a plurality of fourth light-emitting control units 144 that are cascaded. Each of the gate driving units in the first sub-drive circuit may include a second gate input terminal and a second gate output terminal. The second gate output terminal may be configured to output the second scan signal. Each of the light-emitting control units in the first sub-drive circuit may include a second light-emitting input terminal and a second light-emitting output terminal, where the second light-emitting output terminal is configured to output a second light-emitting control signal.
The second gate input terminal of a first stage of the plurality of third gate driving units 141 may be electrically connected to the second scan trigger signal terminal. In each of two adjacent stages of the plurality of first gate driving units 131, the second gate input terminals of the plurality of third gate driving units 141 in a next stage may be electrically connected to the second gate output terminals of the plurality of third gate driving units 141 of a previous stage. Each of the plurality of third gate driving units 141 may be configured to drive a corresponding one of the plurality of third gate lines 115 by adopting a unilateral driving mode according to the second scan trigger signal.
The second gate input terminal of a first stage of the plurality of fourth gate driving units 142 may be electrically connected to the second scan trigger signal terminal. In each of two adjacent stages of the plurality of fourth gate driving units 142, the second gate input terminals of the plurality of fourth gate driving units 142 in a next stage may be electrically connected to the second gate output terminals of the plurality of fourth gate driving units 142 of a previous stage. Each of the plurality of fourth gate driving units 142 may be configured to drive a corresponding one of the plurality of fourth gate lines 117 by adopting a unilateral driving mode according to the second scan trigger signal.
The second light-emitting input terminal of a first stage of the plurality of third light-emitting control units 143 may be electrically connected to the second light-emitting trigger signal terminal. In each of two adjacent stages of the plurality of third light-emitting control units 143, the second light-emitting input terminals of the plurality of third light-emitting control units 143 in a next stage may be electrically connected to the second light-emitting output terminals of the plurality of third light-emitting control units 143 of a previous stage. The plurality of third gate driving units 141 may be configured to drive the plurality of third gate lines 115 by adopting the unilateral driving mode according to the second scan trigger signal.
The second light-emitting input terminal of a first stage of the plurality of fourth light-emitting control units 144 may be electrically connected to the second light-emitting trigger signal terminal. In each of two adjacent stages of the plurality of fourth light-emitting control units 144, the second light-emitting input terminals of the plurality of fourth light-emitting control units 144 in a next stage may be electrically connected to the second light-emitting output terminals of the plurality of fourth light-emitting control units 144 of a previous stage. The plurality of fourth gate driving units 142 may be configured to drive the plurality of fourth gate lines 117 by adopting the unilateral driving mode according to the second scan trigger signal.
When the plurality of third light-emitting control lines 116 are connected to each of the plurality of second pixel units in two adjacent rows in the second pixel block 101b and the plurality of fourth light-emitting control lines 118 are connected to each of the plurality of second pixel units in two adjacent rows in the second pixel block 101b, the first sub-drive circuit may drive the plurality of third light-emitting control lines 116 by adopting a dual-row, unilateral driving mode, and drive the plurality of fourth light-emitting control lines 118 by adopting the dual-row, unilateral driving mode.
In an embodiment, a second gate output terminal of the third gate driving unit 141 and a second gate output terminal of the fourth gate driving unit 142 located in a same row as the third gate driving unit 141 may be connected to each other, i.e., the third gate lines 115 and the fourth gate line 117 located in a same row are connected. Therefore, the third gate line 115 and the fourth gate line 117 located in the same row may be driven by the third gate driving unit 141 and the fourth gate driving unit 142 jointly to realize a bilateral drive for the third gate line 115 and the fourth gate line 117. Accordingly, a second light-emitting output terminal of the third light-emitting control unit 143 and a second light-emitting output terminal of the fourth light-emitting control unit 144 located in a same row as the third light-emitting control unit 143 may be connected to each other, so that the third light-emitting control line 116 and the fourth light-emitting control line 118 located in a same row are connected to realize a bilateral drive for the third light-emitting line 116 and the fourth light-emitting line 118.
Further as illustrated in FIG. 8, in an embodiment, the display panel may further include a plurality of fifth gate lines 1191 disposed in the second sub-display region 102b and a plurality of fifth light-emitting control lines 1192 disposed in the second sub-display region 102b. The fifth gate lines 1191 may be connected to each of the plurality of second pixel units of a same pixel row in the second sub-display region 102b. The fifth light-emitting control lines 1192 may be connected to each of the plurality of second pixel units of at least one pixel row in the second sub-display region 102b.
The second sub-drive circuit may include a plurality of fifth gate driving units 145 that are cascaded and a plurality of fifth light-emitting control units 146 that are cascaded. The plurality of fifth gate driving units 145 may be symmetrically disposed on both sides of the second sub-display region 102b and the plurality of fifth light-emitting control units 146 may be symmetrically disposed on both sides of the second sub-display region 102b. The second gate input terminal of a first stage of the plurality of fifth gate driving units 145 may be electrically connected to the second scan trigger signal terminal. In each of two adjacent stages of the plurality of fifth gate driving units 145, the second gate input terminals of the plurality of fifth gate driving units 145 in a next stage may be electrically connected to the second gate output terminals of the plurality of fifth gate driving units 145 of a previous stage. Since the fifth gate line 1191 is connected to two fifth gate driving units 145 of a same row, the second sub-drive circuit may adopt a bilateral driving mode to drive the plurality of fifth light-emitting control lines 1192.
In some embodiments, when the plurality of fifth light-emitting control lines 1192 are connected to each of the plurality of second pixel units in two adjacent rows in the second sub-display region 102b, the second sub-drive circuit may drive the plurality of fifth light-emitting control lines 1192 by adopting the dual-row, bilateral driving mode. In this way, both a gate drive capability and a light-emitting control drive capability of the second sub-display region 102b with a large number of second pixel units may be improved and a response speed as well as a homogeneity of the second sub-display region 102b may be enhanced.
As illustrated in FIG. 9, for an easier illustration, the pixel driving circuit provided in FIG. 5 which drives the plurality of first pixel units in row a of the first display region and the plurality of second pixel units in a second row of the first sub-display region is taken as an example to illustrate how a same brightness (e.g., 100nit) is realized in both the first display region and the second display region. A first scan signal input to the first display region may be denoted by Scan(a) and a second scan signal input to the first display region may be denoted by Scan(b). A first scan signal input to the second display region may be denoted by Scan(1) and a second scan signal input to the second display region may be denoted by Scan(2).
During a reset stage of a time T1, the first scan signal Scan(a) and Scan(1) input to the gate reset transistor T4 may be simultaneously lowered and the gate reset transistor T4 may conduct. Therefore, the gate transistors in the first pixel driving circuit and the second pixel driving circuit may be reset.
During a charging stage of a time T2, the second scan signal Scan(b) and Scan(2) input to the data writing transistor T2 may be simultaneously lowered and the data writing transistor T2 may conduct. Therefore, the data writing transistor T2 of the first pixel driving circuit and the data writing transistor T2 of the second pixel driving circuit may be charged. A first data signal, Data, of the first pixel driving circuit and a second data signal, Data, of the second pixel driving circuit may be configured to be different, so that a same brightness may be performed in a lower area of the first display region 101 and a lower area of the second display region 102. The data voltage V_DATA of the data signal Data is related to the duty cycle of the light-emitting control signal.
During a light-emitting phase of a time of T3, the first drive circuit 130 may adopt the PWM dimming mode, accordingly outputting a first light-emitting control signal EM (a) corresponding to a target brightness of 100nit to change the brightness of each first pixel units in the first display region, where the first light-emitting control signal EM (a) is the PWM signal. The second drive circuit 140 may adopt the DC dimming mode, accordingly outputting a second light-emitting control signal EM (1) to change the brightness of each second pixel units in the second display region 102. The data voltage V_DATA of the second data signal may be adjusted in accordance with the target brightness of 100nit.
As illustrated in FIG. 10, in an embodiment, the non-display area NAA may include a first region 151, a second region 152, a third region 153, and a fourth region 154 connected in sequence. The first region 151 and the third region 153 may be disposed in parallel. The second region 152 and the fourth region 154 may be disposed in parallel. The second region 152 may be connected to the first region 151 and the third region 153, respectively. The first drive circuit 130 may be disposed in the first region 151 proximate to the first display region 101. That is, if the first display region 101 is close to an upper bezel of the display panel, the first region 151 may be considered as a region located on an upper side of a display area AA. If the first display region 101 is close to a right bezel of the display panel, the first region 151 may be considered as a region located in a right side of the display area AA. If the first display region 101 is close to a left bezel of the display panel, the first region 151 may be considered as a region located in a left side of the display area AA. If the first display region 101 is close to a lower bezel of the display panel, the first region 151 may be considered as a region located on a lower side of the display area AA.
For an easier illustration, a scenario in which the first display region 101 is close to an upper bezel of the display panel and the display area AA is a rectangular area is taken as an example. The non-display area NAA may include the first region 151 disposed on the upper side of the display area AA, the third region 153 disposed on the lower side of the display area AA, the fourth region 154 disposed on the left side of the display area AA, and the second region 152 disposed on the right side of the display area AA. The first drive circuit 130 may be disposed in the first region 151 and the second drive circuit 140 may be symmetrically disposed in the second region 152 and the fourth region 154. The first sub-drive circuit are symmetrically disposed in the second region 152 and the fourth region 154. Both the third gate driving unit 141 and the third light-emitting control unit 143 may be disposed in the fourth region 154. Both the fourth gate driving unit 142 and the fourth light-emitting control unit 144 may be disposed in the second region 152. The second sub-drive circuit may be symmetrically disposed in the second region 152 and the fourth region 154. The fifth gate driving units 145 may be symmetrically disposed in the second region 152 and the fourth region 154. The fifth light-emitting control units 146 may be symmetrically disposed in the second region 152 and the fourth region 154.
In the embodiments of the present disclosure, by disposing the first drive circuit 130 in the first region 151 near the first display region 101, a wiring distance of the gate lines in the first drive circuit 130 and a wiring distance of the light-emitting control lines in the first drive circuit 130 may be shortened. Besides, an overall circuit complexity of the display panel may be simplified and widths of both the left and right bezels may be reduced so that a display panel with thinner bezel may be realized.
Further as illustrated in FIG.7, in an embodiment, the first gate driving unit 131 in the first drive circuit 130 and the second gate driving unit 132 in the first drive circuit 130 may be disposed in the first region 151 near the first display region 101. The first light-emitting control unit 133 in the first drive circuit 130 and the second light-emitting control unit 134 in the first drive circuit 130 may be symmetrically disposed in the second region 152 and the fourth region 154. The first light-emitting control unit 133 may be disposed in the fourth region 154 and the second light-emitting control unit 134 may be disposed in the second region 152. The first light-emitting control unit 133 and the second light-emitting control unit 134 may be disposed symmetrically with respect to the first display region 101 so that the wiring distances of both the gate lines and the light-emitting control lines in the first drive circuit 130 may be shortened, the overall circuit complexity of the display panel may be simplified, and widths of both the left and right bezels may be reduced to realize the display panel with thinner bezel.
Locations of the first drive circuit 130 and the second drive circuit 140 in the non-display area in the embodiments of the present disclosure are not limited to the above-described example, but may also be adjusted according to the actual needs. In addition, the wiring of each drive line (e.g., the gate lines, the light-emitting control lines) located in the first display region 101 and the second display region 102 may also be adjusted according to the locations of the first drive circuit 130 and the second drive circuit 140.
The various technical features of the above embodiments may be combined randomly, and all possible combinations of the various technical features in the above embodiments have not been described for a sake of simplicity of description. However, as long as there is no contradiction in the combinations of these technical features, the combinations should be considered to be within the scope of the present disclosure.
The above embodiments illustrate only several embodiments of the present disclosure. While the embodiments are described in a relatively specific and detailed manner, they are not to be considered as a limitation on the scope of present disclosure. For the ordinary skilled in the art, several deformations and improvements can be made without departing from the concepts of the embodiments of the present disclosure and all of the adjustments belong to the scope of protection of the embodiments of the present disclosure. Therefore, a scope of the present disclosure shall be subject to the appended claims.

Claims

A display panel, comprising:
a first display region, comprising a plurality of first pixel units;

a second display region, adjacent to the first display region and comprising a plurality of second pixel units, wherein a load of the plurality of second pixel units is smaller than a load of the plurality of first pixel units;

a first drive circuit, connected to each of the plurality of first pixel units and configured to drive each of the plurality of first pixel units to emit light using a pulse width modulation dimming mode; and

a second drive circuit, connected to each of the plurality of second pixel units and configured to drive each of the plurality of second pixel units to emit light using either the pulse width modulation dimming mode or a direct current dimming mode and based on a target brightness of the display panel.
The display panel as claimed in claim 1, wherein when the target brightness is smaller than a first threshold value, the second drive circuit adopts the pulse width modulation dimming mode to drive each of the plurality of second pixel units to emit light; when the target brightness is greater than a second threshold value, the second drive circuit adopts the direct current dimming mode to drive each of the plurality of second pixel units to emit light; the first threshold value is smaller than or equals to the second threshold value.
The display panel as claimed in claim 1, further comprising:
a display driving unit, comprising a first set of drive terminals and a second set of drive terminals;

wherein the first set of drive terminals is connected to the first drive circuit, the first set of drive terminals is configured to output a first set of drive signals to control the first drive circuit to drive each of the plurality of first pixel units to emit light, and the first set of drive signals at least comprises a first scan trigger signal and a first light-emitting trigger signal;

the second set of drive terminals is connected to the second drive circuit, the second set of drive terminals is configured to output a second set of drive signals to control the second drive circuit to drive each of the plurality of second pixel units to emit light, the second set of drive signals at least comprises a second scan trigger signal and a second light-emitting trigger signal, and the first light-emitting trigger signal and the second light-emitting trigger signal are different.
The display panel as claimed in claim 3, wherein the plurality of second pixel units of the first display region are divided into a first pixel block and a second pixel block; the display panel further comprises a plurality of first gate lines disposed in the first pixel block, a plurality of first light-emitting control lines disposed in the first pixel block, a plurality of second gate lines disposed in the second pixel block, and a plurality of second light-emitting control lines disposed in the second pixel block; the first drive circuit comprises:
a plurality of first gate driving units that are cascaded, each connected to a corresponding first gate line and each configured to adopt a unilateral driving mode based on the first scan trigger signal to drive the corresponding first gate line;

a plurality of second gate driving units that are cascaded, each connected to a corresponding second gate line and each configured to adopt the unilateral driving mode based on the first scan trigger signal to drive the corresponding second gate line;

a plurality of first light-emitting control units that are cascaded, configured to adopt the unilateral driving mode based on the first light-emitting trigger signal to drive the plurality of first light-emitting control lines; and

a plurality of second light-emitting control units that are cascaded, configured to adopt the unilateral driving mode based on the first light-emitting trigger signal to drive the plurality of second light-emitting control lines.
The display panel as claimed in claim 4, wherein each of the plurality of first light-emitting control units is correspondingly connected to two of the plurality of first light-emitting control lines, and each of the plurality of second light-emitting control units is correspondingly connected to two of the plurality of second light-emitting control lines.
The display panel as claimed in claim 4, wherein the first gate line and the second gate line that are disposed in a same row are connected, and the first gate line and the second gate line that are disposed in the same row are driven by the first gate driving unit and the second gate driving unit jointly.
The display panel as claimed in claim 4, wherein the first light-emitting control line and the second light-emitting control line that are disposed in a same row are connected to realize a bilateral drive for both the first light-emitting control line and the second light-emitting control line.
The display panel as claimed in claim 3, wherein the second display region comprises a first sub-display region and a second sub-display region, the first sub-display region is disposed in at least one side of the first display region, the first sub-display region and the first display region are arranged along a first direction, and the second drive circuit comprises:
a first sub-drive circuit, connected to the second set of drive terminals and each of the plurality of second pixel units of the first sub-display region to drive each of the plurality of second pixel units of the first sub-display region to emit light based on the second set of drive signals; and

a second sub-drive circuit, connected to the second set of drive terminals and each of the plurality of second pixel units of the second sub-display region to drive each of the plurality of second pixel units of the second sub-display region to emit light based on the second set of drive signals.
The display panel as claimed in claim 8, wherein the plurality of second pixel units of the first sub-display region are divided into a third pixel block and a fourth pixel block; the third pixel block, the first pixel block, the second pixel block, and the fourth pixel block are arranged along the first direction of the display panel; the display panel further comprises a plurality of third gate lines disposed in the third pixel block, a plurality of third light-emitting control lines disposed in the third pixel block, a plurality of fourth gate lines disposed in the fourth pixel block, and a plurality of fourth light-emitting control lines disposed in the fourth pixel block; and the first sub-drive circuit comprises:
a plurality of third gate driving units that are cascaded, each connected to a corresponding third gate line and each configured to adopt the unilateral driving mode based on the second scan trigger signal to drive the corresponding third gate line;

a plurality of fourth gate driving units that are cascaded, each connected to a corresponding fourth gate line and each configured to adopt the unilateral driving mode based on the second scan trigger signal to drive the corresponding fourth gate line;

a plurality of third light-emitting control units that are cascaded, configured to adopt the unilateral driving mode based on the first light-emitting trigger signal to drive the plurality of third light-emitting control lines; and

a plurality of fourth light-emitting control units that are cascaded, configured to adopt the unilateral driving mode based on the first light-emitting trigger signal to drive the plurality of fourth light-emitting control lines.
The display panel as claimed in claim 9, wherein each of the plurality of third light-emitting control units is correspondingly connected to two of the plurality of third light-emitting control lines; each of the plurality of fourth light-emitting control units is correspondingly connected to two of the plurality of fourth light-emitting control lines.
The display panel as claimed in claim 9, wherein the display panel further comprises a plurality of fifth gate lines disposed in the second sub-display region and a plurality of fifth light-emitting control lines disposed in the second sub-display region, the second sub-drive circuit adopts a bilateral driving mode to drive the plurality of fifth gate lines, and the second sub-drive circuit adopts the bilateral driving mode to drive the plurality of fifth light-emitting control lines.
The display panel as claimed in claim 11, wherein two of the plurality of fifth gate driving units and the fifth gate line disposed in a same row are electrically connected, and the second sub-drive circuit adopts the bilateral driving mode to drive the fifth light-emitting control lines.
The display panel as claimed in claim 11, wherein the fifth gate line is connected to each of the plurality of second pixel units of two adjacent rows in the second sub-display region, and the second sub-drive circuit adopts a two-row bilateral driving mode to drive the plurality of fifth light-emitting control lines.
The display panel as claimed in claim 9, wherein the third gate line and the fourth gate line that are disposed in a same row are connected, and the third gate line and fourth gate line that are disposed in the same row are driven by the third gate driving unit and the fourth gate driving unit jointly.
The display panel as claimed in claim 9, wherein the third light-emitting control line and the fourth light-emitting control line that are disposed in a same row are connected to realize a bilateral drive for both the third light-emitting control line and the fourth light-emitting control line.
The display panel as claimed in claim 3, wherein the first scan trigger signal and the second scan trigger signal are the same.
The display panel as claimed in claim 1, further comprising a non-display area around the second display region, wherein the non-display area comprises a first region, a second region, a third region, and a fourth region connected in sequence; the first region and the third region are disposed in parallel and the second drive circuit is symmetrically disposed in the second region and the fourth region.
The display panel as claimed in claim 17, wherein the first drive circuit is disposed in the first region close to the first display region.
The display panel as claimed in claim 17, wherein a first gate driving unit and a second gate driving unit of the first drive circuit are disposed in the first region close to the first display region;
a first light-emitting control unit of the first drive circuit is disposed in the second region, a second light-emitting control unit of the first drive circuit is disposed in the fourth region, and the first light-emitting unit and the second light-emitting unit are symmetrically disposed with respect to the first display region.
A display device, comprising a photo sensor and the display panel as claimed in any one of claims 1-19, wherein at least a part of the photo sensor is disposed in correspondence with the first display region.
The display device as claimed in claim 20, wherein the photo sensor is a camera.