Driving method for display apparatus, display apparatus, and display device

Abstract

A driving method for a display apparatus, a display apparatus, and a display device, relating to the technical field of display, for use in reducing the power consumption of a display apparatus. The specific solution comprises: acquiring state information of a display apparatus, the state information comprising display brightness and / or an operating temperature; and outputting a gate voltage to a first gate driving circuit among multiple groups of gate driving circuits on the basis of the state information, the first gate driving circuit being configured to output a gate scanning signal to a corresponding pixel circuit on the basis of the gate voltage. When the state information is a first value, the gate voltage is a first voltage, and when the state information is a second value, the gate voltage is a second voltage, wherein the amplitude of the second voltage is less than the amplitude of the first voltage.

Description

Display device driving method, display device, and display apparatus

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on March 8, 2024, with application number 202410281526.5 and application name “Driving method, display device and display equipment of display device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The embodiments of the present application relate to the field of display technology, and in particular to a driving method for a display device, a display device, and a display apparatus. Background Art

[0003] With the rapid development of science and technology, semiconductor devices have been widely used in display devices (such as mobile phones, tablet computers, and televisions). Display devices may include multiple light-emitting devices and multiple driving circuits for driving the light-emitting devices. The light-emitting devices can be light-emitting diodes. Among them, organic light-emitting diodes (OLEDs) are a new type of semiconductor material with self-luminous properties. They can emit light under the action of a driving circuit and have advantages such as high contrast, high brightness, a wide color gamut, and a fast response time.

[0004] As users' requirements for image quality and contrast become increasingly higher, the brightness of display devices continues to increase, and the power consumption of display devices is also increasing. Therefore, a technical solution that can reduce the power consumption of display devices is urgently needed. Summary of the Invention

[0005] Embodiments of the present application provide a display device driving method, a display device, and a display apparatus, which reduce the power consumption of the display device.

[0006] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions.

[0007] In a first aspect, an embodiment of the present application provides a driving method for a display device, wherein the display device includes multiple groups of gate driving circuits and multiple pixel circuits, and the method includes: obtaining status information of the display device, the status information including display brightness and / or operating temperature, and outputting a gate voltage to a first gate driving circuit in the multiple groups of gate driving circuits according to the status information, the first gate driving circuit being configured to output a gate scanning signal to the corresponding pixel circuit according to the gate voltage, wherein when the status information is a first value, the gate voltage is a first voltage, and when the status information is a second value, the gate voltage is a second voltage, and the amplitude of the second voltage is less than the amplitude of the first voltage.

[0008] Thus, in the display device driving method provided in the embodiments of the present application, the display device can output gate voltages of different voltage amplitudes to the first gate drive circuit based on different status information of the display device (display brightness and / or operating temperature). For example, a first voltage is output when the status information is a first value, and a second voltage is output when the status information is a second value, and the amplitude of the second voltage is smaller than the amplitude of the first voltage. Thus, by reducing the amplitude of the gate voltage, the power consumption of the display device can be reduced.

[0009] In one possible design, outputting a gate voltage to a first gate driver circuit among the multiple groups of gate driver circuits based on status information includes: outputting the gate voltage to the first gate driver circuit among the multiple groups of gate driver circuits based on the status information and a preset correspondence, where the preset correspondence is a correspondence between the status information and the gate voltage. Thus, a gate voltage amplitude can be determined based on the status information and the preset correspondence, so that a gate voltage of the corresponding amplitude is output to the first gate driver circuit. Compared to a fixed gate voltage amplitude, a dynamic gate voltage amplitude can reduce power consumption of the display device.

[0010] In one possible design, the status information includes display brightness of the display device, and the display brightness corresponding to the first value is higher than the display brightness corresponding to the second value. Therefore, when the display brightness of the display device dims, the amplitude of the gate voltage can be reduced to reduce power consumption of the display device.

[0011] In one possible design, the status information includes an operating temperature of the display device, and the operating temperature corresponding to the first value is lower than the operating temperature corresponding to the second value. Thus, when the operating temperature of the display device increases, the amplitude of the gate voltage can be reduced to reduce power consumption of the display device.

[0012] In one possible design, the state information includes the display brightness and operating temperature of the display device, and the gate voltage amplitude is related to the display brightness and the operating temperature. Thus, the gate voltage amplitude can be related to both the display brightness and the operating temperature, and different gate voltage amplitudes can be determined based on different states of the display device. Compared to a fixed gate voltage amplitude, a dynamic gate voltage amplitude can reduce power consumption of the display device.

[0013] In one possible design, a gate scan signal is used to initialize the anode of a light-emitting diode in a pixel circuit. The gate scan signal can be used to turn on a transistor in the pixel circuit to initialize the anode of the light-emitting diode in the pixel circuit. The amplitude of the gate scan signal is related to the amplitude of the gate voltage. Therefore, the amplitude of the gate scan signal can be reduced by reducing the amplitude of the gate voltage, further reducing power consumption of the display device.

[0014] In one possible design, a gate scan signal is used to control the pixel circuit to write a data signal. The gate scan signal can be used to turn on a transistor in the pixel circuit to control the pixel circuit to write a data signal. The amplitude of the gate scan signal is related to the amplitude of the gate voltage. Therefore, the amplitude of the gate scan signal can be reduced by reducing the amplitude of the gate voltage, further reducing the power consumption of the display device.

[0015] In one possible design, the method further includes: outputting a gate voltage to a second gate drive circuit in the plurality of gate drive circuits based on the status information, wherein when the status information is a first value, the gate voltage is a third voltage, and when the status information is a second value, the gate voltage is a fourth voltage, the amplitude of the fourth voltage is less than the amplitude of the third voltage, and the levels of the third and fourth voltages are opposite to the levels of the first and second voltages. Thus, the display device driving method provided in the embodiment of the present application can simultaneously adjust the gate voltages output by the first and second gate drive circuits to further reduce the power consumption of the display device.

[0016] In one possible design, outputting a gate voltage to a first gate driver circuit in the plurality of gate driver circuits based on state information includes: waiting for at least one refresh cycle before outputting the gate voltage to the first gate driver circuit in the plurality of gate driver circuits, and waiting for at least one refresh cycle before outputting the gate voltage to a second gate driver circuit in the plurality of gate driver circuits. Thus, when the state of the display device changes, the display device can wait for at least one refresh cycle before adjusting the amplitude of the gate voltage, allowing more time for voltage switching and helping to reduce flicker.

[0017] In a second aspect, an embodiment of the present application provides a display device, comprising: a peripheral drive circuit, multiple groups of gate drive circuits, and multiple pixel circuits. The peripheral drive circuit is configured to obtain status information of the display device, the status information including display brightness and / or operating temperature. The peripheral drive circuit is further configured to output a gate voltage to a first gate drive circuit in the multiple groups of gate drive circuits according to the status information, and the first gate drive circuit is configured to output a gate scan signal to the corresponding pixel circuit according to the gate voltage, wherein when the status information is a first value, the gate voltage is a first voltage, and when the status information is a second value, the gate voltage is a second voltage, and the amplitude of the second voltage is less than the amplitude of the first voltage.

[0018] In one possible design, the peripheral driving circuit is configured to output a gate voltage to a first gate driving circuit in the plurality of gate driving circuits according to state information and a preset correspondence relationship, where the preset correspondence relationship is a correspondence relationship between state information and gate voltage.

[0019] In a possible design, the status information includes display brightness of the display device, and the display brightness corresponding to the first value is higher than the display brightness corresponding to the second value.

[0020] In a possible design, the status information includes an operating temperature of the display device, and the operating temperature corresponding to the first value is lower than the operating temperature corresponding to the second value.

[0021] In one possible design, the status information includes display brightness and operating temperature of the display device, and the amplitude of the gate voltage is related to the display brightness and the operating temperature.

[0022] In one possible design, the gate scan signal is used to initialize the anode of the light emitting diode of the pixel circuit.

[0023] In one possible design, the gate scan signal is used to control the pixel circuit to write data.

[0024] In one possible design, the peripheral circuit is further configured to output a gate voltage to a second gate drive circuit in the multiple groups of gate drive circuits based on status information, wherein when the status information is a first value, the gate voltage is a third voltage, and when the status information is a second value, the gate voltage is a fourth voltage, the amplitude of the fourth voltage is smaller than the amplitude of the third voltage, and the levels of the third voltage and the fourth voltage are opposite to the levels of the first voltage and the second voltage.

[0025] In one possible design, the peripheral driving circuit is configured to wait for at least one refresh cycle before outputting a gate voltage to a first gate driving circuit in a plurality of gate driving circuits, and to wait for at least one refresh cycle before outputting a gate voltage to a second gate driving circuit in a plurality of gate driving circuits.

[0026] In one possible design, a peripheral drive circuit is coupled to multiple groups of gate drive circuits via multiple voltage signal lines, and the peripheral drive circuit is coupled to a first gate drive circuit in the multiple groups of gate drive circuits via a first voltage signal line among the multiple voltage signal lines. The peripheral drive circuit is coupled to a second gate drive circuit in the multiple groups of gate drive circuits via a second voltage signal line among the multiple voltage signal lines. Thus, if the first voltage signal line is coupled only to the first gate drive circuit, and the second voltage signal line is coupled only to the second gate drive circuit, the load on the first and second voltage signal lines can be reduced, thereby improving the display effect. If the first voltage signal line is also coupled to other gate drive circuits, and the second voltage signal line is also coupled to other gate drive circuits, the power consumption of the display device can be further reduced.

[0027] In one possible design, the first voltage signal line or the second voltage signal line includes at least two metal layers, which are connected by at least one connection hole. Thus, if the first voltage signal line or the second voltage signal line is formed by overlapping multiple metal layers, the resistance of the first voltage signal line or the second voltage signal line can be reduced, further reducing the load on the voltage signal line and improving the display effect.

[0028] Some of the beneficial effects of the second aspect can refer to the beneficial effects of the first aspect.

[0029] In a third aspect, an embodiment of the present application provides a display device comprising a processor and a display device. The processor is configured to output status information to the display device, the status information including display brightness and / or operating temperature. The peripheral drive circuit is configured to obtain status information of the display device, and the peripheral drive circuit is further configured to output a gate voltage to a first gate drive circuit in a plurality of gate drive circuits according to the status information, and the first gate drive circuit is configured to output a gate scan signal to a corresponding pixel circuit according to the gate voltage, wherein when the status information is a first value, the gate voltage is a first voltage, and when the status information is a second value, the gate voltage is a second voltage, and the amplitude of the second voltage is less than the amplitude of the first voltage.

[0030] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, comprising computer instructions. When the computer instructions are executed on an electronic device, the electronic device executes a method for driving a display device in any of the above aspects and any possible implementation methods.

[0031] In a fifth aspect, an embodiment of the present application provides a computer program product, which, when executed on a computer or a processor, enables the computer or the processor to execute a method for driving a display device in any of the above aspects and any possible implementations.

[0032] It can be understood that any of the display devices, display equipment, computer-readable storage media or computer program products provided above can be applied to the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods and will not be repeated here.

[0033] These and other aspects of the present application will become more readily apparent from the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] FIG1 is a structural diagram of a display device provided in an embodiment of the present application;

[0035] FIG2 is a diagram showing the relationship between display brightness, current, and device voltage of an OLED provided in an embodiment of the present application;

[0036] FIG3 is a diagram showing the relationship between the current and the device voltage of an OLED provided in an embodiment of the present application;

[0037] FIG4 is a structural diagram of a gate drive circuit provided in an embodiment of the present application;

[0038] FIG5 is a timing diagram of a gate scanning signal of a gate driving circuit provided in an embodiment of the present application;

[0039] FIG6 is a structural diagram of a peripheral driving circuit provided in an embodiment of the present application;

[0040] FIG7 is a schematic structural diagram of a pixel circuit provided in an embodiment of the present application;

[0041] FIG8 is a timing diagram of a pixel circuit provided in an embodiment of the present application;

[0042] FIG9 is a timing diagram of different states of a pixel circuit provided by an embodiment of the present application;

[0043] FIG10 is a flow chart of a method for driving a display device provided in an embodiment of the present application;

[0044] FIG11 is a schematic structural diagram of another pixel circuit provided in an embodiment of the present application;

[0045] FIG12 is a timing diagram of different display brightnesses provided by an embodiment of the present application;

[0046] FIG13 is a timing diagram of different operating temperatures provided by an embodiment of the present application;

[0047] FIG14 is a schematic structural diagram of another pixel circuit provided in an embodiment of the present application;

[0048] FIG15 is another timing diagram of different display brightness provided by an embodiment of the present application;

[0049] FIG16 is another timing diagram of different operating temperatures provided by an embodiment of the present application;

[0050] FIG17 is a structural diagram of another pixel circuit provided in an embodiment of the present application;

[0051] FIG18 is a timing diagram of another pixel circuit provided in an embodiment of the present application;

[0052] FIG19 is a timing diagram of another pixel circuit provided in an embodiment of the present application;

[0053] FIG20 is a structural diagram of another peripheral driving circuit provided in an embodiment of the present application;

[0054] FIG21 is a timing diagram of a peripheral driving circuit provided in an embodiment of the present application;

[0055] FIG22 is a structural diagram of another display device provided in an embodiment of the present application;

[0056] FIG23 is a structural diagram of another display device provided in an embodiment of the present application;

[0057] FIG24 is a cross-sectional view of a voltage signal line provided in an embodiment of the present application. DETAILED DESCRIPTION

[0058] For ease of understanding, some examples of concepts related to the embodiments of this application are provided for reference as follows:

[0059] 1. Initialization voltage (VINI). In the embodiment of the present application, the initialization voltage can be used to reset the anode of the light-emitting diode and the gate of the driving transistor.

[0060] 2. Buck-boost converter, a commonly used DC / DC conversion circuit, the output voltage of this circuit can be lower or higher than the input voltage, and the polarity of the output voltage of this circuit is opposite to that of the input voltage.

[0061] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings in the embodiments of the present application. In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0062] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this embodiment, unless otherwise specified, "plurality" means two or more.

[0063] The technical solutions provided in the embodiments of the present application can be applied to various electronic devices including display devices. The electronic devices are, for example, consumer electronic products with display functions, home electronic products, vehicle-mounted electronic products, and financial electronic equipment products. Consumer electronic products include mobile phones, tablet computers, laptop computers, e-readers, personal computers (PCs), personal digital assistants (PDAs), desktop displays, smart wearable products (for example, smart watches, smart bracelets), virtual reality (VR) electronic devices, augmented reality (AR) electronic devices, drones, etc. Home electronic products include smart door locks, televisions, remote controls, refrigerators, rechargeable small household appliances (for example, soymilk machines, sweeping robots), etc. Vehicle-mounted electronic products include car navigation systems, car high-density digital video discs (DVDs), etc. Financial electronic equipment products include automated teller machines (ATMs), self-service electronic devices, etc. The embodiments of the present application do not impose any special restrictions on the specific forms of the above-mentioned electronic devices.

[0064] To facilitate understanding, the specific structure of the display device is first introduced below.

[0065] As shown in Figure 1, Figure 1 is a structural diagram of a display device provided in an embodiment of the present application. The display device 10 may include an active display area (AA) 100, a non-active display area (NA) 200, a data control circuit 300 and a peripheral drive circuit 400. Among them, the active display area 100 and the non-active display area 200 constitute a display panel 11, the active display area 100 is the pixel light-emitting area, and the non-active display area 200 is the non-luminous area in the display panel 11. The data control circuit 300 is used to provide data signals (DS) to the display panel 11 after receiving external image information. The data signal is a digital signal that determines the pixel light-emitting current in the pixel circuit programming. The peripheral drive circuit 400 is used to provide multiple sets of control signals (CS) and pixel voltages (PV) required by multiple display panels.

[0066] Specifically, the effective display area 100 may include a plurality of pixels arranged in an array (i.e., a pixel array), a plurality of data lines, and a plurality of gate scan lines. Each data line is coupled to a plurality of pixels along the Y direction, and each gate scan line is coupled to a plurality of pixels along the X direction. Each pixel is coupled to the data line, the gate scan line, the power supply voltage (positive power supply voltage (ELVDD) and negative power supply voltage (ELVSS)) line, and the initialization voltage (VINI) line. A pixel can be understood as a pixel circuit, which may include a light-emitting diode and a circuit unit for controlling the light-emitting diode. The light-emitting diode may be an OLED, a quantum dot light-emitting diode (QLED), a mini LED, or a micro LED. The circuit unit can control the current value from the positive power supply voltage (ELVDD) to the negative power supply voltage (ELVSS) by executing a specific pixel circuit timing, and the light-emitting diode can emit light of a specific brightness at a specific current value.

[0067] The non-effective display area 200 is located on one side or both sides of the effective display area 100 and may include a plurality of gate drive circuits. Since the non-effective display area 200 adopts the technology of gate driver on array (GOA), the gate drive circuit is also called a GOA circuit. After receiving the control signal, the GOA circuit can generate a plurality of shift pulse signals output row by row, that is, a plurality of gate scan signals. Each gate signal line (GL) is coupled to one or more rows of pixel circuits, and the gate scan signal is output row by row to control the thin-film transistor (TFT) in the pixel circuit to turn on or off row by row. Continuing to refer to Figure 1, the non-effective display area 200 may include k gate drive circuits, namely a first gate drive circuit, a second gate drive circuit, a third gate drive circuit, ..., and a kth gate drive circuit. Among them, each gate driving circuit outputs gate scanning signals for controlling multiple rows of pixel circuits, the gate scanning signals for controlling the first row of pixel circuits are such as S1_1, S2_1, S3_1, ..., Sk_1, and the gate scanning signals for controlling the nth row of pixel circuits are such as S1_n, S2_n, S3_n, ..., Sk_n.

[0068] The data control circuit 300 is used to provide multiple sets of data signals. The data control circuit 300 transmits the data signals to the pixel circuits in the display panel 11 through multiple data lines so that the pixel circuits can operate normally. The number of the multiple data lines can be the same as the total number of columns of the pixel array composed of the pixel circuits.

[0069] The peripheral drive circuit 400 is used to provide multiple sets of control signals, which may include a start frame signal (start voltage signal, STV), a clock signal (clock signal, CLK), a gate high-level voltage (gate high-level voltage, VGH) and a gate low-level voltage (gate low-level voltage, VGL). After receiving the control signals, the gate drive circuit generates corresponding high and low level gate scan signals. In addition, the peripheral drive circuit 400 is also used to provide multiple sets of pixel voltages, which may include power supply voltages (VDD and VSS) and initialization voltages. The peripheral drive circuit 400 transmits pixel voltage values ​​to the pixel circuits in the display panel 11 through multiple signal lines, so that the pixel circuits can operate normally.

[0070] Based on the display device shown in FIG1 , the pixel circuit, the gate driving circuit and the peripheral driving circuit are further introduced below.

[0071] Each pixel circuit includes an OLED, and the display brightness of the display device is determined by the current of the OLED. Specifically, the greater the current of the OLED, the higher the display brightness of the display device, and the smaller the current of the OLED, the lower the display brightness of the display device. The current of the OLED satisfies the following relationship: I OLED =K(ELVDD-V data ) 2 , where K is a process-related constant, ELVDD is the positive power supply voltage, V data is the on-state voltage of OLED. data is a positive number. From the above formula, we can see that the current of OLED and V data Therefore, when V data The smaller the value, the higher the display brightness of the display device.

[0072] As shown in FIG2 , FIG2 is a diagram showing the relationship between the display brightness, current and device voltage of an OLED provided in an embodiment of the present application. The device voltage of the OLED is the voltage V across the anode to the cathode of the OLED. OLED Figure 2(a) shows the display brightness and I OLED , (b) in FIG2 shows I OLED and V OLED The relationship between the display brightness of OLED and I OLED There is a positive correlation, I OLED The larger the value, the higher the display brightness of OLED. OLED and V OLED There is also a positive correlation, I OLED The larger the VOLED Therefore, the lower the display brightness of the display device, the larger the V OLED In one example, when the brightness of the display device decreases from B1 to B2, I OLED From I1 to I2, V OLED It also needs to be reduced from V1 to V2.

[0073] In addition, V OLED It is also related to the operating temperature of the display device, as shown in Figure 3, which is a relationship diagram between the current and device voltage of an OLED provided in an embodiment of the present application. Figure 3 shows the I in high temperature scenario, normal temperature scenario and low temperature scenario respectively. OLED and V OLED At normal temperature, when V OLED When V1, I OLED When the operating temperature of the display device changes from low temperature to high temperature, V OLED In one example, when the operating temperature of the display device changes from low temperature to high temperature, V OLED Need to downgrade from V3 to V4.

[0074] Among them, the gate drive circuit may include multiple levels of circuit units, as shown in Figure 4, which is a structural diagram of a gate drive circuit provided in an embodiment of the present application. Figure 4 shows n levels of circuit units, namely circuit unit 1, circuit unit 2, circuit unit 3, ..., circuit unit n. Circuit unit 1 outputs a gate scan signal out_1, circuit unit 2 outputs a gate scan signal out_2, circuit unit 3 outputs a gate scan signal out_3, and circuit unit n outputs a gate scan signal out_n. out_1 to out_n correspond to the 1st row of pixel circuits to the nth row of pixel circuits, respectively, that is, 1 row of gate scan signals can control 1 row of pixel circuits. In addition, 1 row of gate scan signals can also control 2 rows of pixel circuits. For example, the gate scan signal out_1 can correspond to the 1st row of pixel circuits and the 2nd row of pixel circuits, the gate scan signal out_2 can correspond to the 3rd row of pixel circuits and the 4th row of pixel circuits, and so on. The gate scan signal out_n can correspond to the 2n-1th row of pixel circuits and the 2nth row of pixel circuits.

[0075] Continuing with FIG4 , after circuit unit 1 receives the start frame signal (STV), the first clock signal (CLK_1), the second clock signal (CLK_2), the gate signal high voltage (VGH1), and the gate signal low voltage (VGL1) generated by the peripheral drive circuit, it responds by generating gate scan signals out_1 to out_n output row by row. Circuit unit 1 is coupled to the start frame signal line, and the other circuit units are coupled to the output terminals of the previous-stage circuit unit, respectively. The gate scan signal output by the previous-stage circuit unit serves as the start signal for the next-stage circuit unit. For example, the input terminal of circuit unit 2 is coupled to the output terminal of circuit unit 1, and the gate scan signal out_1 output by circuit unit 1 serves as the input signal of circuit unit 2. Alternatively, the input terminal of circuit unit 3 is coupled to the output terminal of circuit unit 2, and the gate scan signal out_2 output by circuit unit 2 serves as the input signal of circuit unit 3.

[0076] As shown in Figure 5, Figure 5 is a timing diagram of the gate scan signals of the gate drive circuit in Figure 4. Figure 5 specifically shows the timing diagram of the start frame signal (STV), the first clock signal (CLK_1), the second clock signal (CLK_2), and the gate scan signals out_1 to out_n. The gate scan signal is a square wave signal that switches between high and low voltages. The high voltage value of the gate scan signal is equal to the voltage value of the gate signal high voltage (VGH1), and the low voltage value of the gate scan signal is equal to the voltage value of the gate signal low voltage (VGL1).

[0077] 6 , the peripheral drive circuit can generate control signals and pixel voltage signals. Specifically, the peripheral drive circuit can include a lookup table (LUT) storage module and multiple voltage regulators, which can include an ELVSS voltage regulator, a VINI voltage regulator, a gate high voltage regulator, and a gate low voltage regulator. The peripheral drive circuit is configured to receive status data (e.g., brightness data and temperature data), call the voltage parameters in the lookup table storage module, and send them to the corresponding voltage regulators, such as voltage parameter 1 and voltage parameter 2. The ELVSS voltage regulator can generate ELVSS based on voltage parameter 1, and the VINI voltage regulator can generate VINI based on voltage parameter 2. In addition, the gate high voltage regulator can generate VGH1 and VGH2, and the gate low voltage regulator can generate VGL1 and VGL2. It is understandable that the gate high voltage regulator and the gate low voltage regulator can also be integrated into the same module, which is not limited in the embodiments of the present application.

[0078] Exemplarily, the lookup table storage module may be a random access memory (RAM), and the voltage regulator may be a low-dropout regulator (LDO), a buck-boost converter, or a charge pump.

[0079] In addition, referring to FIG6 , the peripheral drive circuit may further include a clock signal source that can generate a digital start frame signal (data STV, DSTV) and a digital clock signal (data CLK, DCLK). The peripheral drive circuit may further include a level shifter circuit that can convert DSTV to STV_1 to STV_N, and convert DCLK to CLK_1, CLK_2, ..., CLK_N, based on the voltage values ​​of VGH1, VGH2, VGL1, and VGL2. The high voltage value of the converted start frame signal and clock signal can be VGH1 or VGH2, and the low voltage value can be VGL1 or VGL2. When the voltage value of VGH1, VGH2, VGL1, or VGL2 changes, the voltage values ​​of STV_1 to STV_N and CLK_1 to CLK_N also change dynamically. Furthermore, the peripheral drive circuit also outputs a control signal to the gate drive circuit, so that the gate drive circuit can output gate control signals with different high and low voltage values.

[0080] As shown in Figures 7 and 8, Figure 7 is a schematic diagram of the structure of a pixel circuit provided in an embodiment of the present application, and Figure 8 is a timing diagram of a pixel circuit provided in an embodiment of the present application. The pixel circuit is a 7T1C circuit. Specifically, the pixel circuit includes a capacitor (represented by C1 in Figure 7), a light-emitting diode (represented by D1 in Figure 7), a plurality of P-type transistors (represented by T1, T3, T5, T6 and Td in Figure 7) and a plurality of N-type transistors (represented by T2 and T4 in Figure 7). Among them, the gate scan signal of T1 is S1, the gate scan signal of T2 is S2, the gate scan signal of T3 is S3, the gate scan signal of T4 is S4, and the gate scan signals of T5 and T6 are emission signals (EM). One end of T1 and one end of T4 are used to input the initialization voltage (VINI), and one end of T3 is used to input the data signal (DATA). It can be understood that the structure of the pixel circuit can also be other forms, such as 6T1C and 8T1C, etc., and the embodiment of the present application does not limit the specific structure of the pixel circuit.

[0081] 8 , the light-emitting process of the pixel circuit may include: (1) the voltage value of the EM signal is increased, at which time T5 and T6 are turned off, and D1 stops emitting light. (2) the voltage of the S4 signal is increased, at which time T4 is turned on, and the initialization voltage (VINI) is written to Td to reset the gate of Td, i.e., gate reset. (3) the voltage of the S3 signal is decreased, at which time T3 is turned on. At the same time, the voltage of the S2 signal is increased, at which time T2 is turned on, and the data signal (DATA) is written to the gate of Td through T3, Td, and T2, i.e., data write. (4) the voltage of the S1 signal is decreased, at which time T1 is turned on, and the initialization voltage is written to the anode of D1, i.e., anode reset. (5) the voltage of the EM signal is decreased, at which time T5 and T6 are turned on, and D1 starts emitting light.

[0082] In some possible implementations, the processor sends instructions to the peripheral drive circuit according to different states of the pixel circuit (e.g., different brightness or temperature). Assuming that the display brightness of the pixel circuit changes from high brightness to low brightness, as shown in FIG9 , the data voltage (DATA), ELVSS voltage, and VINI voltage output by the peripheral drive circuit will increase. That is, the data voltage increases from the first data voltage to the second data voltage, the ELVSS voltage increases from the first power supply negative voltage to the second power supply negative voltage, and the VINI voltage increases from the first initialization voltage to the second initialization voltage. At this time, the gate scan signals output by the gate drive circuit, such as the voltages of the S1, S2, S3, and S4 signals, have not changed, and the power consumption of the display device is still relatively large.

[0083] Therefore, to further save power consumption, an embodiment of the present application proposes a method for driving a display device, in which the display device can output gate voltages of different voltage amplitudes to a first gate drive circuit based on different status information of the display device (display brightness and / or operating temperature). For example, a first voltage is output when the status information is a first value, and a second voltage is output when the status information is a second value, and the amplitude of the second voltage is smaller than the amplitude of the first voltage. Thus, by reducing the amplitude of the gate voltage, the power consumption of the display device can be reduced.

[0084] Applied to the above-mentioned display device, the driving method of the display device provided by the embodiment of the present application is introduced below.

[0085] As shown in FIG10 , FIG10 is a flowchart of a method for driving a display device provided in an embodiment of the present application. The method includes the following process.

[0086] S1001. Obtain status information of a display device.

[0087] The status information includes display brightness and / or operating temperature.

[0088] For example, the display brightness may be brightness data that the pixel circuit needs to display in the next refresh cycle, and the operating temperature may be the temperature of the environment in which the display device is located.

[0089] 2 , when the display brightness of the display device changes, the current flowing through the OLED also changes, and the device voltage of the OLED also changes. Specifically, when the display brightness of the display device decreases, the current flowing through the OLED decreases, and the device voltage of the OLED also decreases.

[0090] 3 , when the operating temperature of the display device changes, the device voltage of the OLED will also change. Specifically, when the operating temperature of the display device increases, the device voltage of the OLED will decrease.

[0091] S1002 : Output a gate voltage to a first gate driving circuit in the plurality of gate driving circuits according to the state information.

[0092] In which, the first gate drive circuit is configured to output a gate scanning signal to the corresponding pixel circuit according to the gate voltage. When the state information is a first value, the gate voltage is a first voltage. When the state information is a second value, the gate voltage is a second voltage. The amplitude of the second voltage is smaller than the amplitude of the first voltage.

[0093] Exemplarily, the gate voltage may be a gate high voltage VGH or a gate low voltage VGL, a high voltage value of the gate scan signal is equal to a voltage value of VGH, and a low voltage value of the gate scan signal is equal to a voltage value of VGL.

[0094] Exemplarily, the first value or the second value may only include the display brightness or the operating temperature, or the first value or the second value may also include the display brightness or the operating temperature at the same time.

[0095] Exemplarily, the first gate driving circuit may include one or more groups of gate driving circuits, and the gate scanning signal output by each group of gate driving circuits may control one or more rows of pixel circuits.

[0096] For example, the display device can output gate voltages of different voltage amplitudes to the first gate drive circuit based on different state information, thereby obtaining gate scan signals of different voltage amplitudes. When the state of the display device changes, the gate voltage amplitude can be reduced to reduce power consumption of the display device.

[0097] Optionally, S1002 may include: outputting a gate voltage to a first gate driving circuit in the plurality of gate driving circuits according to the state information and a preset corresponding relationship, wherein the preset corresponding relationship is a corresponding relationship between the state information and the gate voltage.

[0098] Exemplarily, the preset correspondences can be stored in a lookup table storage module within the peripheral driver circuit. Specifically, the lookup table can store the correspondence between display brightness and gate voltage, the lookup table can also store the correspondence between operating temperature and gate voltage, or the lookup table can simultaneously store the correspondences between operating temperature, display brightness, and gate voltage. It is understood that the lookup table can also store the correspondences between status information and other voltage parameters, such as the voltage values ​​of ELVSS and VINI.

[0099] Optionally, the status information includes display brightness and operating temperature of the display device, and the amplitude of the gate voltage is related to the display brightness and the operating temperature.

[0100] For example, when the status information includes display brightness and operating temperature, the preset corresponding relationship is shown in Table 1, which shows the voltage parameters corresponding to different operating temperatures and display brightness. <1> to T <m>) temperature data, and display brightness from 1 nit (nit) to n nits (ie B <1> To B <n>) brightness data, m and n are both positive integers. The voltage parameters corresponding to the operating temperature of 1°C and the display brightness of 1nit are the voltage settings <11> Similarly, the voltage parameter corresponding to the operating temperature of m℃ and the display brightness of n nits is the voltage setting .

[0101] Table 1

[0102] Specifically, Table 2 shows the voltage settings in Table 1. <21> It is understandable that the data in Table 2 are merely exemplary, and different pixel circuits have different voltage values.

[0103] Table 2

[0104] It is understood that Tables 1 and 2 are merely schematic representations of a lookup table, and different display devices may have different data ranges. For example, the lookup table may not store temperature data, but only one or more brightness data, or the lookup table may not store brightness data, but only one or more temperature data. In addition, the lookup table may also include voltage data for pixels of different colors (e.g., red, green, and blue), and the voltage parameters may also include data for other voltage signals, such as VGH1, VGL1, VGH2, VGL2, VINI1, VINI2, and other voltage signals required by various display devices.

[0105] Optionally, the gate scan signal is used to initialize the anode of the light emitting diode of the pixel circuit. The state information includes the display brightness of the display device, and the display brightness corresponding to the first value is higher than the display brightness corresponding to the second value.

[0106] For example, an embodiment of the present application further provides a pixel circuit, as shown in FIG11 , which may include a first transistor (represented by T1 in FIG11 ), a second transistor (represented by T3 in FIG11 ), a driving circuit, and a light-emitting diode (represented by D1 in FIG11 ). The gate scanning signal of T1 is S1, and the gate scanning signal of T3 is S3. Furthermore, the embodiment of the present application does not limit the specific structure of the driving circuit.

[0107] For example, the first transistor and the second transistor may be low-temperature polysilicon thin film transistors (LTPS TFTs), referred to as LTPS transistors. The first transistor and the second transistor may also be indium gallium zinc oxide (IGZO) transistors. Of course, the first transistor and the second transistor may also be other types of transistors, which are not limited in the embodiments of the present application.

[0108] The gate voltage amplitude of the S1 signal varies under different states of the display device. Specifically, as applied to the pixel circuit in FIG. 11 , the timing diagram of the S1 signal at different display brightnesses of the display device is shown in FIG. FIG. 12 also shows timing diagrams of the S3 signal, the data signal DATA, the negative power supply voltage ELVSS, the initialization voltage VINI, and the gate low voltage VGL1 at different display brightnesses. FIG. 12 shows timing diagrams of various signals for the jth refresh cycle and the j+1th refresh cycle, each of which includes a non-light-emitting phase and a light-emitting phase. In one example, assuming that the display device receives a command, the state information during the jth refresh cycle is a first value, and the state information during the j+1th refresh cycle is a second value. At this time, the amplitude of VGL1 decreases from VGL1_1 to VGL1_2. The display brightness corresponding to the jth refresh cycle is high brightness B1. The S1 signal is output by the first gate driver circuit, and the low voltage of the S1 signal waveform is equal to the gate low voltage VGL1_1 received by the first gate driver circuit. The display brightness corresponding to the j+1th refresh cycle is low brightness B2, the low voltage of the S1 signal waveform is equal to the gate low voltage VGL1_2 received by the first gate driving circuit, and the amplitude of VGL1_2 is lower than the amplitude of VGL1_1.

[0109] In addition, the amplitude of the data voltage is reduced from Vdata_1 to Vdata_2, the amplitude of the negative power supply voltage is reduced from ELVSS_1 to ELVSS_2, and the amplitude of the initialization voltage is reduced from VINI_1 to VINI_2, so as to further save power consumption of the display device.

[0110] Optionally, the gate scan signal is used to initialize the anode of the light emitting diode of the pixel circuit. The state information includes an operating temperature of the display device, and the operating temperature corresponding to the first value is lower than the operating temperature corresponding to the second value.

[0111] For example, as applied to the pixel circuit in FIG11 , the timing diagram of the S1 signal at different operating temperatures of the display device is shown in FIG13 . FIG13 also shows timing diagrams of the S3 signal, the data signal DATA, the negative power supply voltage ELVSS, the initialization voltage VINI, and the gate low voltage VGL1 at different display brightnesses. FIG13 shows timing diagrams of various signals for the jth refresh cycle and the j+1th refresh cycle, each of which includes a non-luminous phase and a luminous phase. In one example, assuming that the display device receives a command, the state information during the jth refresh cycle is a first value, and the state information during the j+1th refresh cycle is a second value. At this time, the amplitude of VGL1 decreases from VGL1_1 to VGL1_2. The operating temperature corresponding to the jth refresh cycle is a low temperature T1. The S1 signal is output by the first gate driver circuit, and the low voltage of the S1 signal waveform is equal to the gate low voltage VGL1_1 received by the first gate driver circuit. The operating temperature corresponding to the j+1th refresh cycle is the high temperature T2, the low voltage of the S1 signal waveform is equal to the gate low voltage VGL1_2 received by the first gate driving circuit, and the amplitude of VGL1_2 is lower than the amplitude of VGL1_1.

[0112] In addition, the amplitude of the data voltage remains unchanged, the amplitude of the negative power supply voltage is reduced from ELVSS_1 to ELVSS_2, and the amplitude of the initialization voltage is reduced from VINI_1 to VINI_2, so as to further save the power consumption of the display device.

[0113] Optionally, the gate scan signal is used to control the pixel circuit to write data. The state information includes the display brightness of the display device, and the display brightness corresponding to the first value is higher than the display brightness corresponding to the second value.

[0114] Exemplarily, an embodiment of the present application provides another pixel circuit, as shown in Figure 14, which may include a first transistor (represented by T2 in Figure 14), a second transistor (represented by T3 in Figure 14), a driving transistor (represented by Td in Figure 14), a light-emitting diode (represented by D1 in Figure 14), a first driving circuit, a second driving circuit and a third driving circuit. Among them, the gate scanning signal of T2 is S2, and the gate scanning signal of T3 is S3. In addition, the embodiment of the present application does not limit the specific structure of the first driving circuit, the second driving circuit and the third driving circuit. The first transistor, the second transistor and the driving transistor can be LTPS transistors or IGZO transistors, or can be other types of transistors, and the embodiment of the present application does not limit this.

[0115] The gate voltage amplitude of the S2 signal varies under different states of the display device. Specifically, as applied to the pixel circuit in Figure 14, the timing diagram of the S2 signal at different display brightnesses of the display device is shown in Figure 15. Figure 15 also shows the timing diagrams of the S3 signal, the data signal DATA, the negative power supply voltage ELVSS, the initialization voltage VINI, and the gate high voltage VGH2 at different display brightnesses. Figure 15 shows the timing diagrams of various signals for the jth refresh cycle and the j+1th refresh cycle, each refresh cycle including a non-light-emitting phase and a light-emitting phase. In an example, assume that the display device receives a command, the state information during the jth refresh cycle is a first value, and the state information during the j+1th refresh cycle is a second value. At this time, the amplitude of VGH2 decreases from VGH2_1 to VGH2_2. The display brightness corresponding to the jth refresh cycle is high brightness B1. The S2 signal is output by the first gate driver circuit, and the low voltage of the S2 signal waveform is equal to the gate high voltage VGH2_1 received by the first gate driver circuit. The display brightness corresponding to the j+1th refresh cycle is low brightness B2, the low voltage of the S2 signal waveform is equal to the gate high voltage VGH2_2 received by the first gate driving circuit, and the amplitude of VGH2_2 is lower than the amplitude of VGH2_1.

[0116] In addition, the amplitude of the data voltage is reduced from Vdata_1 to Vdata_2, the amplitude of the negative power supply voltage is reduced from ELVSS_1 to ELVSS_2, and the amplitude of the initialization voltage is reduced from VINI_1 to VINI_2, so as to further save power consumption of the display device.

[0117] Optionally, the gate scanning signal is used to control the pixel circuit to write data. The state information includes an operating temperature of the display device, and the operating temperature corresponding to the first value is lower than the operating temperature corresponding to the second value.

[0118] For example, the timing diagram of the S2 signal at different operating temperatures of the display device is shown in FIG16. FIG16 also shows the timing diagrams of the S3 signal, the data signal DATA, the negative power supply voltage ELVSS, the initialization voltage VINI, and the gate high voltage VGH2 at different display brightness levels. FIG16 shows the timing diagrams of various signals during the jth refresh cycle and the j+1th refresh cycle, each of which includes a non-light-emitting phase and a light-emitting phase. In one example, assume that the display device receives a command, and the state information during the jth refresh cycle is a first value, and the state information during the j+1th refresh cycle is a second value. The operating temperature corresponding to the jth refresh cycle is a low temperature T1. The S2 signal is output by the first gate driver circuit, and the low voltage of the S2 signal waveform is equal to the gate high voltage VGH2_1 received by the first gate driver circuit. The operating temperature corresponding to the j+1th refresh cycle is a high temperature T2. The low voltage of the S2 signal waveform is equal to the gate high voltage VGH2_2 received by the first gate driver circuit, and the amplitude of VGH2_2 is lower than the amplitude of VGH2_1.

[0119] In addition, the amplitude of the data voltage remains unchanged, the amplitude of the negative power supply voltage is reduced from ELVSS_1 to ELVSS_2, and the amplitude of the initialization voltage is reduced from VINI_1 to VINI_2 to further save power consumption.

[0120] Optionally, the driving method of the display device also includes: outputting a gate voltage to a second gate driving circuit in the multiple groups of gate driving circuits according to status information, wherein when the status information is a first value, the gate voltage is a third voltage, and when the status information is a second value, the gate voltage is a fourth voltage, the amplitude of the fourth voltage is smaller than the amplitude of the third voltage, and the levels of the third voltage and the fourth voltage are opposite to the levels of the first voltage and the second voltage.

[0121] Exemplarily, an embodiment of the present application provides another pixel circuit, as shown in FIG17 , which may include a capacitor (represented by C1 in FIG17 ), a light-emitting diode (represented by D1 in FIG17 ), a plurality of P-type transistors (represented by T1, T3, T4, T5, T6, T7 and Td in FIG17 ) and a plurality of N-type transistors (represented by T2 in FIG17 ). The gate scan signal of T1 is S1, the gate scan signal of T2 is S2, the gate scan signal of T3 is S3, the gate scan signal of T4 is S4, the gate scan signal of T5 is S5, and the gate scan signals of T6 and T7 are EM. One end of T1 is used to input a first initialization voltage (VINI1), one end of T4 is used to input a second initialization voltage (VINI2), one end of T3 is used to input a data signal (DATA), and one end of T5 is used to input a third initialization voltage (VINI3).

[0122] Applied to the pixel circuit in Figure 17, the timing diagram of the pixel circuit is shown in Figure 18. The driving method of the display device provided in the embodiment of the present application can simultaneously adjust the amplitude of the S1 signal and the amplitude of the S2 signal. Figure 18 shows the timing diagrams of various signals in the j-th refresh cycle and the j+1-th refresh cycle, and each refresh cycle includes a non-luminous phase and a luminous phase. In an example, it is assumed that the display device receives an instruction, the state information at the j-th refresh cycle is the first value, and the state information at the j+1-th refresh cycle is the second value. At this time, the amplitude of VGL1 is reduced from VGL1_1 to VGL1_2, and the amplitude of VGH2 is reduced from VGH2_1 to VGH2_2. In an example, at high brightness B1, the amplitude of the high voltage of the S1 signal waveform is VGL1_1, and the amplitude of the low voltage of the S2 signal waveform is VGH2_1. At low brightness B2, the amplitude of the high voltage of the S1 signal waveform decreases from VGL1_1 to VGL1_2, and the amplitude of the low voltage of the S2 signal waveform decreases from VGH2_1 to VGH2_2.

[0123] Optionally, S1002 may include: waiting for at least one refresh cycle before outputting a gate voltage to a first gate driving circuit in a plurality of gate driving circuits, and waiting for at least one refresh cycle before outputting a gate voltage to a second gate driving circuit in a plurality of gate driving circuits.

[0124] For example, as shown in FIG19 , FIG19 (a) shows a timing diagram applied to the pixel circuit in FIG11 , and FIG19 (b) shows a timing diagram applied to the pixel circuit in FIG14 . Since voltage switching requires time, the S1 signal can maintain the voltage amplitude of the jth refresh cycle during the j+1th refresh cycle and then decrease from VGL1_1 to VGL1_2 during the j+hth refresh cycle, where h is an integer greater than or equal to 2. For example, the S1 signal decreases from VGL1_1 to VGL1_2 during the j+2th refresh cycle. Alternatively, the S2 signal can maintain the voltage amplitude of the jth refresh cycle during the j+1th refresh cycle and then decrease from VGH2_1 to VGH2_2 during the j+hth refresh cycle, where h is an integer greater than or equal to 2. For example, the S2 signal can decrease from VGH2_1 to VGH2_2 during the j+2th refresh cycle. Therefore, since the gate scan signal waits for at least one refresh cycle before changing, more time is reserved for voltage switching, reducing flicker.

[0125] An embodiment of the present application also provides a display device, which may include a peripheral drive circuit, multiple groups of gate drive circuits and multiple pixel circuits. The peripheral drive circuit is configured to obtain status information of the display device, and the status information includes display brightness and / or operating temperature. The peripheral drive circuit is also configured to output a gate voltage to a first gate drive circuit in the multiple groups of gate drive circuits according to the status information, and the first gate drive circuit is configured to output a gate scan signal to the corresponding pixel circuit according to the gate voltage. When the status information is a first value, the gate voltage is a first voltage, and when the status information is a second value, the gate voltage is a second voltage, and the amplitude of the second voltage is less than the amplitude of the first voltage.

[0126] FIG20 illustrates another structure of a peripheral driver circuit, based on the structure of the peripheral driver circuit shown in FIG6 , in which the gate high voltage regulator may include a VGH signal source, a VGH1 voltage regulator, and a VGH2 voltage regulator, and the gate low voltage regulator may include a VGL signal source, a VGL1 voltage regulator, and a VGL2 voltage regulator. The peripheral driver circuit is further configured to receive status data (e.g., brightness data and temperature data), retrieve voltage parameters from a lookup table storage module, and transmit them to the corresponding signal sources and voltage regulators, such as voltage parameter 3 and voltage parameter 4. Specifically, the VGH signal source may generate VGHX based on voltage parameter 3, and the VGL signal source may generate VGLX based on voltage parameter 4. Furthermore, the VGH1 voltage regulator may generate VGH1 based on VGHX, the VGH2 voltage regulator may generate VGH2 based on VGHX, the VGL1 voltage regulator may generate VGL1 based on VGLX, and the VGL2 voltage regulator may generate VGL2 based on VGLX. In addition, the voltage parameter 3 and the voltage parameter 4 can be directly sent to the VGH1 voltage regulator, the VGH2 voltage regulator, the VGL1 voltage regulator, and the VGL2 voltage regulator, thereby changing the voltage value of VGH or VGL individually.

[0127] For example, the VGH1 voltage regulator, the VGH2 voltage regulator, the VGL1 voltage regulator, and the VGL2 voltage regulator may be step-down circuit modules, and thus, the absolute values ​​of the voltages of VGLX and VGHX are generally greater than the VGL voltage and the VGH voltage.

[0128] As shown in FIG21 , which is a timing diagram of the peripheral driving circuit in FIG20 , specifically, when the display device switches from high brightness B1 to low brightness B2, the voltage amplitude of VGLX decreases from VGLX_1 to VGLX_2, and the voltage amplitude of VGL1 decreases from VGL1_1 to VGL1_2. Furthermore, the voltage amplitude of VGHX decreases from VGHX_1 to VGHX_2, and the voltage amplitude of VGH2 decreases from VGH2_1 to VGH2_2.

[0129] In one embodiment, as shown in FIG. 22 , a peripheral driver circuit and multiple gate driver circuits are shown. The peripheral driver circuit is coupled to the multiple gate driver circuits via multiple voltage signal lines. The multiple gate driver circuits can be divided into a first gate driver circuit, a second gate driver circuit, a third gate driver circuit, ..., and a kth gate driver circuit. The peripheral driver circuit can provide multiple gate high voltages and gate low voltages of different values ​​to the gate driver circuits. For example, the peripheral driver circuit is coupled to the multiple gate driver circuits via VGL1, VGL2, VGH1, and VGH2. The VGL1 signal line can be coupled to the first gate driver circuit and the other gate driver circuits simultaneously, and the VGH2 signal line can be coupled to the second gate driver circuit and the other gate driver circuits simultaneously. Specifically, the VGL1 / VGH1 signal line is coupled to the first gate driver circuit, the VGL2 / VGH2 signal line is coupled to the second gate driver circuit, and the VGL1 / VGH1 signal line is coupled to the VGL2 / VGH2 signal line and the third gate driver circuit through the kth gate driver circuit. This connection method can further reduce the power consumption of the display device.

[0130] It can be understood that the embodiments of the present application do not limit the position of the gate driving circuit. The position of the gate driving circuit of the display device is not fixed. The gate driving circuit can be set on one side or both sides of the effective display area, wherein the first gate driving circuit and the second gate driving circuit can be placed on the same side or different sides of the effective display area.

[0131] Optionally, the peripheral driving circuit is coupled to a first gate driving circuit in the multiple groups of gate driving circuits through a first voltage signal line among multiple voltage signal lines, and the peripheral driving circuit is coupled to a second gate driving circuit in the multiple groups of gate driving circuits through a second voltage signal line among multiple voltage signal lines.

[0132] For example, as shown in FIG23 , taking the first voltage signal line VGL1 and the second voltage signal line VGH2 as an example, the VGL1 signal line can be coupled independently to the first gate drive circuit, while the VGL2 signal line can be coupled to other gate drive circuits. Alternatively, the VGH2 signal line can be coupled independently to the second gate drive circuit, while the VGH1 signal line can be coupled to other gate drive circuits. Specifically, the VGL1 / VGH1 signal lines are coupled to the first gate drive circuit, the VGL2 / VGH2 signal lines are coupled to the second gate drive circuit, and the VGH1 / VGL2 signal lines are coupled to the third to kth gate drive circuits. This connection method can further reduce the power consumption of the display device. This connection method can further reduce the power consumption of the display device.

[0133] Optionally, the peripheral drive circuit is further coupled to a third gate drive circuit in the plurality of gate drive circuits via a first voltage signal line, and is further coupled to a fourth gate drive circuit in the plurality of gate drive circuits via a second voltage signal line. The gate scan signal output by the third gate drive circuit is used to control the pixel circuit to emit light, and the gate scan signal output by the fourth gate drive circuit is used to control the gate reset of the drive transistor.

[0134] For example, the first voltage signal line can be coupled to both the first gate drive circuit and the third gate drive circuit, and the second voltage signal line can be coupled to both the second gate drive circuit and the fourth gate drive circuit. That is, assuming the first voltage signal line is VGL1 and the second voltage signal line is VGH2, VGL1 can be coupled to a gate drive circuit that outputs a low-level gate scan signal, and VGH2 can be coupled to a gate drive circuit that outputs a high-level gate scan signal.

[0135] Optionally, the first voltage signal line or the second voltage signal line includes at least two metal layers, and the at least two metal layers are connected through at least one connection hole.

[0136] For example, the first voltage signal line or the second voltage signal line can be formed by overlapping multiple metal layers, with an inorganic layer between adjacent metal layers. The multiple metal layers can be connected by connection holes at appropriate locations to achieve electrical conduction. This can reduce the impedance of the first voltage signal line and the second voltage signal line, reduce the impact of voltage switching on signal quality, and improve display effects.

[0137] In one example, as shown in FIG24 , three metal layers and two inorganic layers are shown, which are a first metal layer, a first inorganic layer, a second metal layer, a second inorganic layer, and a third metal layer arranged in sequence. The first metal layer and the second metal layer can be connected via a first connection hole, and the second metal layer and the third metal layer can be connected via a second connection hole.

[0138] In one example, the metal layer may be a three-layer titanium-aluminum-titanium metal or a single layer of molybdenum metal, and the inorganic layer may be silicon nitride or silicon oxide.

[0139] An embodiment of the present application also provides a display device, which may include a processor and a display device. The processor is configured to output status information to the display device, and the status information includes display brightness and / or operating temperature. The peripheral drive circuit is configured to obtain status information of the display device, and the peripheral drive circuit is further configured to output a gate voltage to a first gate drive circuit in a plurality of groups of gate drive circuits according to the status information, and the first gate drive circuit is configured to output a gate scan signal to a corresponding pixel circuit according to the gate voltage. When the status information is a first value, the gate voltage is a first voltage, and when the status information is a second value, the gate voltage is a second voltage, and the amplitude of the second voltage is less than the amplitude of the first voltage.

[0140] An embodiment of the present application further provides a computer storage medium storing computer instructions. When the computer instructions are executed on an electronic device, the electronic device executes the above-mentioned related method steps to implement the driving method of the display device in the above-mentioned embodiment.

[0141] An embodiment of the present application further provides a computer program product. When the computer program product is run on a computer, the computer is caused to execute the above-mentioned related steps to implement the display device driving method executed by the electronic device in the above-mentioned embodiment.

[0142] In addition, an embodiment of the present application also provides a device, which can specifically be a chip, component or module, and the device may include a connected processor and memory; wherein the memory is used to store computer execution instructions, and when the device is running, the processor can execute the computer execution instructions stored in the memory to enable the chip to execute the driving method of the display device executed by the electronic device in the above-mentioned method embodiments.

[0143] Among them, the display device, display equipment, computer storage medium, computer program product or chip provided in this embodiment are all used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods provided above, and will not be repeated here.

[0144] Through the description of the above implementation methods, technical personnel in the relevant field can understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0145] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the modules or units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0146] The units described as separate components may or may not be physically separate, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple places. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0147] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0148] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a device (which can be a single-chip microcomputer, chip, etc.) or a processor (processor) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0149] The above content is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims. < / n> < / m>

Claims

1. A method for driving a display device, characterized in that: The display device includes multiple gate drive circuits and multiple pixel circuits; the method includes: Acquiring status information of the display device, the status information including display brightness and / or operating temperature; A gate voltage is output to a first gate driving circuit in the multiple groups of gate driving circuits according to the status information, and the first gate driving circuit is configured to output a gate scanning signal to the corresponding pixel circuit according to the gate voltage, wherein when the status information is a first value, the gate voltage is a first voltage, and when the status information is a second value, the gate voltage is a second voltage, and the amplitude of the second voltage is less than the amplitude of the first voltage.

2. The method according to claim 1, characterized in that Outputting a gate voltage to a first gate driving circuit in the plurality of gate driving circuits according to the state information includes: A gate voltage is output to a first gate driving circuit in the plurality of gate driving circuits according to the state information and a preset corresponding relationship, wherein the preset corresponding relationship is a corresponding relationship between the state information and the gate voltage.

3. The method according to claim 1 or 2, characterized in that The status information includes the display brightness of the display device, and the display brightness corresponding to the first value is higher than the display brightness corresponding to the second value.

4. The method according to claim 1 or 2, characterized in that The status information includes an operating temperature of the display device, and the operating temperature corresponding to the first value is lower than the operating temperature corresponding to the second value.

5. The method according to claim 1 or 2, characterized in that The state information includes display brightness and operating temperature of the display device, and the amplitude of the gate voltage is related to the display brightness and the operating temperature.

6. The method according to any one of claims 1 to 5, characterized in that The gate scanning signal is used to initialize the anode of the light emitting diode of the pixel circuit.

7. The method according to any one of claims 1 to 6, characterized in that The gate scanning signal is used to control the pixel circuit to write data.

8. The method according to any one of claims 1 to 7, characterized in that The method further comprises: A gate voltage is output to a second gate driving circuit in the multiple groups of gate driving circuits according to the status information, wherein when the status information is a first value, the gate voltage is a third voltage, and when the status information is a second value, the gate voltage is a fourth voltage, the amplitude of the fourth voltage is smaller than the amplitude of the third voltage, and the levels of the third voltage and the fourth voltage are opposite to the levels of the first voltage and the second voltage.

9. The method according to claim 8, characterized in that Outputting a gate voltage to a first gate driving circuit in the plurality of gate driving circuits according to the state information includes: Wait for at least one refresh cycle before outputting the gate voltage to the first gate driving circuit in the multiple gate driving circuits, and wait for at least one refresh cycle before outputting the gate voltage to the second gate driving circuit in the multiple gate driving circuits.

10. A display device, characterized in that: The display device includes: a peripheral driving circuit, multiple groups of gate driving circuits and multiple pixel circuits; The peripheral driving circuit is configured to obtain status information of the display device, wherein the status information includes display brightness and / or operating temperature; The peripheral drive circuit is further configured to output a gate voltage to a first gate drive circuit in the multiple groups of gate drive circuits according to the status information, and the first gate drive circuit is configured to output a gate scan signal to the corresponding pixel circuit according to the gate voltage, wherein when the status information is a first value, the gate voltage is a first voltage, and when the status information is a second value, the gate voltage is a second voltage, and the amplitude of the second voltage is smaller than the amplitude of the first voltage.

11. The display device according to claim 10, wherein: The peripheral driving circuit is configured to output a gate voltage to a first gate driving circuit in the plurality of gate driving circuits according to the state information and a preset corresponding relationship, wherein the preset corresponding relationship is a corresponding relationship between the state information and the gate voltage.

12. The display device according to claim 10 or 11, characterized in that The status information includes the display brightness of the display device, and the display brightness corresponding to the first value is higher than the display brightness corresponding to the second value.

13. The display device according to claim 10 or 11, characterized in that The status information includes an operating temperature of the display device, and the operating temperature corresponding to the first value is lower than the operating temperature corresponding to the second value.

14. The display device according to claim 10 or 11, characterized in that: The state information includes display brightness and operating temperature of the display device, and the amplitude of the gate voltage is related to the display brightness and the operating temperature.

15. The display device according to any one of claims 10 to 14, characterized in that: The gate scanning signal is used to initialize the anode of the light emitting diode of the pixel circuit.

16. The display device according to any one of claims 10 to 14, characterized in that: The gate scanning signal is used to control the pixel circuit to write data.

17. The display device according to any one of claims 10 to 16, characterized in that: The peripheral circuit is further configured to output a gate voltage to a second gate driving circuit in the multiple groups of gate driving circuits based on the status information, wherein when the status information is a first value, the gate voltage is a third voltage, and when the status information is a second value, the gate voltage is a fourth voltage, the amplitude of the fourth voltage is smaller than the amplitude of the third voltage, and the levels of the third voltage and the fourth voltage are opposite to the levels of the first voltage and the second voltage.

18. The display device according to claim 17, wherein: The peripheral driving circuit is configured to wait for at least one refresh cycle before outputting the gate voltage to the first gate driving circuit in the multiple groups of gate driving circuits, and to wait for at least one refresh cycle before outputting the gate voltage to the second gate driving circuit in the multiple groups of gate driving circuits.

19. The display device according to claim 18, wherein The peripheral driving circuit is coupled to the plurality of gate driving circuits via a plurality of voltage signal lines, and the peripheral driving circuit is coupled to a first gate driving circuit in the plurality of gate driving circuits via a first voltage signal line in the plurality of voltage signal lines; The peripheral driving circuit is coupled to a second gate driving circuit in the plurality of gate driving circuits through a second voltage signal line in the plurality of voltage signal lines.

20. The display device according to claim 19, wherein The first voltage signal line or the second voltage signal line includes at least two metal layers, and the at least two metal layers are connected through at least one connection hole.

21. A display device, characterized in that: comprising a processor and a display device according to any one of claims 10 to 20; The processor is configured to output status information to the display device, the status information including display brightness and / or operating temperature; a peripheral driving circuit configured to obtain status information of the display device; The peripheral drive circuit is further configured to output a gate voltage to a first gate drive circuit in the multiple groups of gate drive circuits based on the status information, and the first gate drive circuit is configured to output a gate scan signal to the corresponding pixel circuit based on the gate voltage, wherein when the status information is a first value, the gate voltage is a first voltage, and when the status information is a second value, the gate voltage is a second voltage, and the amplitude of the second voltage is smaller than the amplitude of the first voltage.

22. A computer-readable storage medium, characterized in that When the computer instructions are executed on the display device, the display device is caused to execute the method according to any one of claims 1 to 9.

Images