A driving method of a display apparatus and a display apparatus

Abstract

The application discloses a display device driving method and a display device. The display device driving method comprises receiving a data voltage; wherein the data voltage comprises a current frame data voltage and a next frame data voltage; comparing the current frame data voltage with the next frame data voltage to generate a comparison result; and adjusting an initialization voltage transmitted on an initialization line according to the comparison result. The technical scheme provided by the embodiment of the application solves the problem of charge waste in the initialization stage of the display device.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to a driving method for a display device and a display device. Background Technology

[0002] With the development of display technology, people's requirements for display technology are also increasing. The modular structure of display panels is becoming more and more complex. In order to improve the display effect of display devices, it is necessary to initialize each pixel of the display device. The existing initialization method of display devices requires the initialization of each pixel circuit before each data write, which will cause a lot of charge waste. Summary of the Invention

[0003] This invention provides a driving method for a display device and a display device in order to solve the problem of charge waste in the initialization phase of a display device.

[0004] According to one aspect of the present invention, a driving method for a display device is provided, comprising:

[0005] Receive data voltage; wherein, the data voltage includes the data voltage of the current frame and the data voltage of the next frame;

[0006] The data voltage of the current frame is compared with the data voltage of the next frame to generate a comparison result;

[0007] Based on the comparison results, adjust the initialization voltage transmitted on the initialization line.

[0008] Optionally, the received data voltage includes:

[0009] The data voltage is received through a data comparator.

[0010] Optionally, comparing the data voltage of the current frame with the data voltage of the next frame to generate a comparison result includes:

[0011] The data comparator calculates the difference between the data voltage of the current frame and the data voltage of the next frame to generate a comparison result.

[0012] Optionally, adjusting the initialization voltage of the initialization line transmission based on the comparison result includes:

[0013] When the data voltage of the next frame is greater than or equal to the data voltage of the current frame, the initialization line is controlled not to output the initialization voltage.

[0014] When the data voltage of the next frame is less than the data voltage of the current frame, the first initialization voltage is determined based on the data voltage of the current frame and the data voltage of the next frame, and the initialization line is controlled to output the first initialization voltage.

[0015] Optionally, determining the first initialization voltage based on the data voltage of the current frame and the data voltage of the next frame includes:

[0016] The difference between the data voltage of the current frame and the data voltage of the next frame is calculated to determine the absolute value of the difference between the data voltage of the current frame and the data voltage of the next frame of the pixel circuit connected to the initialization line, where the first initialization voltage is less than the first value of the difference between the data voltage of the current frame and the data voltage of the next frame.

[0017] Each column of pixel circuits shares a common initialization line; adjacent columns of pixel circuits use different initialization lines.

[0018] According to another aspect of the present invention, a display device is provided, the display device being used in the driving method of the display device proposed in any of the first aspects.

[0019] The display device includes:

[0020] A data comparator is used to receive data voltage and compare the data voltage of the current frame with the data voltage of the next frame to generate a comparison result; wherein, the data voltage includes the data voltage of the current frame and the data voltage of the next frame;

[0021] A control module is connected to the data comparator and is used to adjust the initialization voltage transmitted on the initialization line according to the comparison result.

[0022] Optionally, the display device further includes:

[0023] Multiple pixel circuits

[0024] Multiple initialization lines are provided, which are used to transmit initialization voltage to the pixel circuit.

[0025] Multiple data lines, which are used to transmit data voltage to the pixel circuit;

[0026] The pixel circuit includes a driving circuit and a light-emitting element; the driving circuit is connected to the light-emitting element and is used to drive the light-emitting element to emit light.

[0027] The driving circuit includes a driving transistor, and the initialization line is used to transmit an initialization voltage to the gate of the driving transistor so that the data line writes the data voltage to the anode of the light-emitting element.

[0028] Optionally, the control module is specifically used for:

[0029] When the data voltage of the next frame is greater than or equal to the data voltage of the current frame, the control module is used to control the initialization line not to output the initialization voltage;

[0030] When the data voltage of the next frame is less than the data voltage of the current frame, the control module controls the initialization line to output a first initialization voltage, wherein the first initialization voltage is determined based on the data voltage of the current frame and the data voltage of the next frame.

[0031] Optionally, the control module is specifically used for:

[0032] When the data voltage of the next frame is less than the data voltage of the current frame, the initialization line is controlled to output a first initialization voltage, wherein the first initialization voltage is less than the absolute value of the difference between the data voltage of the current frame and the data voltage of the next frame of the pixel circuit connected to the initialization line;

[0033] Each column of pixel circuits shares a common initialization line; adjacent columns of pixel circuits use different initialization lines.

[0034] Preferably, the number of initialization lines is equal to the number of data lines.

[0035] Optionally, the display device further includes: a computing unit and a storage module;

[0036] The computing unit is connected to the storage module, and the storage module retrieves the data voltage of the current frame and the data voltage of the next frame from the computing unit.

[0037] The data comparator is connected to the storage module and is used to receive the data voltage of the current frame and the data voltage of the next frame from the storage module.

[0038] The technical solution of this invention receives data voltage, compares the data voltage of the current frame with the data voltage of the next frame, generates a comparison result, and adjusts the initialization voltage transmitted on the initialization line based on the comparison result. This setting can better ensure the display effect of the display device and save the charge waste caused by the initialization voltage on the initialization line.

[0039] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a flowchart of a driving method for a display device provided in an embodiment of the present invention;

[0042] Figure 2 This is a flowchart of another driving method for a display device provided in an embodiment of the present invention;

[0043] Figure 3 This is a flowchart of another driving method for a display device provided in an embodiment of the present invention;

[0044] Figure 4 This is a flowchart of another driving method for a display device provided in an embodiment of the present invention;

[0045] Figure 5 This is a flowchart of another driving method for a display device provided in an embodiment of the present invention;

[0046] Figure 6 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention;

[0047] Figure 7 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention;

[0048] Figure 8 This is a schematic diagram of a pixel circuit provided in an embodiment of the present invention;

[0049] Figure 9 This is a schematic diagram of the structure of another display device provided in an embodiment of the present invention;

[0050] Figure 10 This is a schematic diagram of the structure of another display device provided in an embodiment of the present invention. Detailed Implementation

[0051] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0052] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0053] As mentioned in the background section, improving the display effect of a display device requires initializing each pixel. However, existing initialization methods for display devices require initializing each pixel circuit before each data write, resulting in significant charge waste. Through extensive research, the inventors discovered that the operation of conventional pixel circuits in existing display devices generally consists of three stages: a reset stage, a compensation stage, and a lighting stage. To prevent the next frame's data voltage from failing to be written, existing display devices require resetting the gate potential of the driving transistor to the initialization voltage each time during the reset stage, which again results in substantial charge waste.

[0054] Figure 1 This is a flowchart of a driving method for a display device provided in an embodiment of the present invention. See also... Figure 1 The driving method for the display device provided in this embodiment includes:

[0055] S101, Receive data voltage; wherein, the data voltage includes the data voltage of the current frame and the data voltage of the next frame.

[0056] Specifically, the data voltage is acquired, which includes the data voltage of the current frame and the data voltage of the next frame. The data voltage can be acquired directly by the computing unit or through a data comparator.

[0057] S102. Compare the data voltage of the current frame with the data voltage of the next frame to generate a comparison result.

[0058] Specifically, the data voltage of the next frame is compared with the data voltage of the current frame. For example, the difference or quotient of the data voltage of the next frame and the data voltage of the current frame can be calculated, and the magnitude of the data voltage of the next frame and the data voltage of the current frame can be compared to generate a comparison result.

[0059] S103. Based on the comparison results, adjust the initialization voltage of the initialization line transmission.

[0060] Specifically, based on the comparison between the data voltage of the next frame and the data voltage of the current frame, the initialization voltage transmitted on the initialization line is adjusted so that the initialization voltage transmitted on the initialization line is related to the data voltage of the pixel circuit in the next frame. When the data voltage of the next frame does not require initialization, the initialization voltage does not need to be transmitted on the initialization line, thus effectively saving the waste of charge transmitted on the initialization line. When the data voltage of the next frame requires initialization, the initialization voltage can be transmitted to the pixel circuit on the initialization line. This setting can better ensure the display effect of the display device while saving the charge waste caused by the initialization voltage on the initialization line.

[0061] The driving method for a display device provided in this embodiment of the invention receives data voltage, compares the data voltage of the current frame with the data voltage of the next frame, generates a comparison result, and adjusts the initialization voltage transmitted on the initialization line according to the comparison result. This setting can better ensure the display effect of the display device and save the charge waste caused by the initialization voltage on the initialization line.

[0062] Figure 2 This is a flowchart of another driving method for a display device provided in an embodiment of the present invention. See also... Figure 2 The driving method for the display device provided in this embodiment includes:

[0063] S201, Receive data voltage through data comparator.

[0064] Specifically, the data comparator can acquire data voltage. The display device may include a computing unit, a control module, and a storage module. The computing unit can be the central controller of the display device, the control module can be a driver chip, and the storage module can be RAM (Random Access Memory). The storage module retrieves the data voltage of the current frame and the data voltage of the next frame from the computing unit. The data comparator can be integrated into the driver chip, and the data comparator receives the data voltage of the current frame and the data voltage of the next frame stored in the storage module.

[0065] S202. The data voltage of the current frame is compared with the data voltage of the next frame using a data comparator to generate a comparison result.

[0066] S103. Based on the comparison results, adjust the initialization voltage of the initialization line transmission.

[0067] Figure 3 This is a flowchart of another driving method for a display device provided in an embodiment of the present invention. See also Figure 3 The driving method for the display device provided in this embodiment includes:

[0068] S101, Receive data voltage; wherein, the data voltage includes the data voltage of the current frame and the data voltage of the next frame.

[0069] S301. The data voltage of the current frame is subtracted from the data voltage of the next frame by the data comparator to generate a comparison result.

[0070] Specifically, this configuration facilitates rapid calculation and output of comparison results by the data comparator. Furthermore, it allows for the determination of the difference between the data voltage of the current frame and the data voltage of the next frame, serving as the basis for adjusting the initialization voltage transmitted on the initialization line, thus further saving calculation time.

[0071] S103. Based on the comparison results, adjust the initialization voltage of the initialization line transmission.

[0072] Figure 4 This is a flowchart of another driving method for a display device provided in an embodiment of the present invention. See also Figure 4 The driving method for the display device provided in this embodiment includes:

[0073] S101, Receive data voltage; wherein, the data voltage includes the data voltage of the current frame and the data voltage of the next frame.

[0074] S102. Compare the data voltage of the current frame with the data voltage of the next frame to generate a comparison result.

[0075] S401. When the data voltage of the next frame is greater than or equal to the data voltage of the current frame, control the initialization line not to output the initialization voltage.

[0076] Specifically, when the data voltage of the next frame is greater than the data voltage of the current frame, since the gate-source voltage of the driving transistor is the sum of the data voltage of the current frame and the threshold voltage of the driving transistor, plus the difference between the data voltage of the next frame and the threshold voltage of the driving transistor, meaning the gate-source voltage of the driving transistor is less than the threshold voltage of the driving transistor, the driving transistor can be turned on. The gate of the driving transistor does not need to be reset, and the data voltage of the next frame can be written to the anode of the light-emitting element. At this time, the initialization line does not output an initialization voltage, which effectively avoids unnecessary waste of charge transferred on the initialization line.

[0077] When the data voltage of the next frame equals the data voltage of the current frame, the data voltage of the current frame can be written, and the data voltage of the next frame, which is equal to the data voltage of the current frame, can also continue to be written. The gate of the driving transistor does not need to be reset, and the data voltage of the next frame can be written to the anode of the light-emitting element. At this time, the control initialization line does not output the initialization voltage, which can effectively avoid unnecessary waste of charge transmitted on the initialization line.

[0078] S402. When the data voltage of the next frame is less than the data voltage of the current frame, a first initialization voltage is determined based on the data voltage of the current frame and the data voltage of the next frame, and the initialization line is controlled to output the first initialization voltage.

[0079] Specifically, when the data voltage of the next frame is less than the data voltage of the current frame, the gate of the driving transistor needs to be reset so that the data voltage of the next frame can be written to the gate of the driving transistor. At this time, the control initialization line outputs a first initialization voltage. The first initialization voltage is determined based on the data voltage of the current frame and the data voltage of the next frame. The first initialization voltage needs to be less than the sum of the data voltage of the next frame and the threshold voltage of the driving transistor. This setting can ensure that the data voltage of the next frame is successfully written to the gate of the driving transistor, while keeping the charge transmitted on the initialization line low, which can effectively avoid unnecessary waste of charge transmitted on the initialization line.

[0080] Figure 5 This is a flowchart of another driving method for a display device provided in an embodiment of the present invention. See also Figure 5 The driving method for the display device provided in this embodiment includes:

[0081] S101, Receive data voltage; wherein, the data voltage includes the data voltage of the current frame and the data voltage of the next frame.

[0082] S102. Compare the data voltage of the current frame with the data voltage of the next frame to generate a comparison result.

[0083] S401. When the data voltage of the next frame is greater than or equal to the data voltage of the current frame, control the initialization line not to output the initialization voltage.

[0084] S501. The difference between the data voltage of the current frame and the data voltage of the next frame is calculated to determine that the first initialization voltage is less than the absolute value of the difference between the data voltage of the current frame and the data voltage of the next frame of the pixel circuit connected to the initialization line; wherein, each column of the pixel circuits shares one initialization line; the initialization lines used by adjacent columns of the pixel circuits are different.

[0085] Specifically, the difference between the sum of the current frame's data voltage, the threshold value of the driving transistor, and the initialization voltage, and the next frame's data voltage, must be less than the threshold value of the driving transistor to allow the next frame's data voltage to be written to the anode of the driving transistor. In other words, when the next frame's data voltage is less than the current frame's data voltage, the control module 5 controls the initialization line Vref to output a first initialization voltage that is less than the absolute value of the difference between the current frame's data voltage and the next frame's data voltage in the pixel circuit 1 connected to the initialization line Vref. This setting ensures both the display effect of the display device 100 and further reduces charge waste caused by the initialization voltage on the initialization line Vref.

[0086] S502. When the data voltage of the next frame is less than the data voltage of the current frame, control the initialization line to output the first initialization voltage.

[0087] Figure 6 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. The display device 100 provided in this embodiment of the present invention includes:

[0088] Data comparator 4 is used to receive data voltage and compare the data voltage of the current frame with the data voltage of the next frame to generate a comparison result; wherein, the data voltage includes the data voltage of the current frame and the data voltage of the next frame;

[0089] Control module 5 is connected to data comparator 4. Control module 5 is used to adjust the initialization voltage transmitted on the initialization line according to the comparison result.

[0090] The display device provided in this embodiment of the invention receives data voltage through a data comparator, compares the data voltage of the current frame with the data voltage of the next frame, and generates a comparison result. The control module adjusts the initialization voltage transmitted on the initialization line according to the comparison result. This configuration allows the control module to calculate an accurate initialization voltage, ensuring that the driving transistor can be turned on and the data voltage of the next frame can be written normally. This better guarantees the display effect of the display device and saves charge waste caused by the initialization voltage on the initialization line.

[0091] Figure 7 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. See also: Figure 7The display device 100 provided in this embodiment of the invention includes multiple pixel circuits 1, multiple initialization lines Vref, which are used to transmit initialization voltage to the pixel circuits 1; multiple data lines Vdata, which are used to transmit data voltage to the pixel circuits 1; a data comparator 4, which is used to receive the data voltage and compare the data voltage of the current frame with the data voltage of the next frame to generate a comparison result; wherein the data voltage includes the data voltage of the current frame and the data voltage of the next frame; and a control module 5, which is connected to the data comparator 4 and is used to adjust the initialization voltage transmitted on the initialization lines Vref according to the comparison result.

[0092] Specifically, the display device 100 may include a substrate, and the pixel circuit 1 may be disposed on the substrate. The pixel circuit 1 may be arranged in an array, and the pixel circuit 1 is used to emit light under the drive of a drive signal so that the display device 100 displays an image.

[0093] The data line Vdata is used to transmit data signals to the pixel circuit 1. The pixel circuit 1 transmits data voltage to the anode of the light-emitting element D1 according to control signals such as clock or light-emitting control signals, so that the pixel circuit 1 can emit light to display the image.

[0094] The initialization line Vref is used to transmit the initialization voltage to the pixel circuit 1. The number of initialization lines Vref is set to multiple, so that the magnitude of the initialization voltage transmitted on each initialization line Vref is different. According to the needs of each pixel circuit 1, different initialization lines Vref can be used to transmit different initialization voltages, so as to realize the transmission of initialization voltage to each pixel circuit 1 on demand. This avoids the initialization line Vref transmitting unnecessary initialization voltage to the pixel circuit 1 that does not need initialization voltage, thus saving the charge on the initialization line Vref. This ensures the display effect of the display device 100 and improves the energy saving effect of the display device 100.

[0095] Data comparator 4 can acquire data voltage and compare the data voltage of the next frame with the data voltage of the current frame. Control module 5 adjusts the initialization voltage transmitted on the initialization line Vref based on the comparison result. This setting associates the initialization voltage transmitted on the initialization line Vref with the data voltage of the next frame of pixel circuit 1. When the data voltage of the next frame does not require initialization, the initialization voltage does not need to be transmitted on the initialization line Vref, thus effectively saving the wasted charge transmitted on the initialization line Vref. When the data voltage of the next frame needs initialization, the initialization voltage can be transmitted to pixel circuit 1 on the initialization line Vref. This setting effectively ensures the display effect of the display device 100 while saving the wasted charge caused by the initialization voltage on the initialization line Vref.

[0096] The display device 100 provided in this embodiment of the invention uses multiple initialization lines Vref, multiple data lines Vdata, a data comparator 4, and a control module 5. Initialization voltage is transmitted to the pixel circuit 1 via the initialization lines Vref, and data voltage is transmitted to the pixel circuit 1 via the data lines Vdata. The data comparator 4 receives the data voltage and compares the data voltage of the current frame with the data voltage of the next frame to generate a comparison result. The control module 5 adjusts the initialization voltage transmitted on the initialization lines Vref according to the comparison result. This configuration can better ensure the display effect of the display device 100 and save the charge waste caused by the initialization voltage on the initialization lines Vref.

[0097] Optional, Figure 8 This is a schematic diagram of a pixel circuit provided in an embodiment of the present invention. Based on the above embodiment, and combined with… Figure 7 and Figure 8 The pixel circuit 1 of the display device 100 provided in this embodiment of the invention includes a driving circuit 11 and a light-emitting element D1; the driving circuit 11 is connected to the light-emitting element D1 and is used to drive the light-emitting element D1 to emit light; the driving circuit 11 includes a driving transistor, and the initialization line Vref is used to transmit an initialization voltage to the gate of the driving transistor so that the data line Vdata writes a data voltage to the anode of the light-emitting element D1.

[0098] Specifically, each light-emitting element D1 can correspond to a driving circuit 11, and each driving circuit 11 is connected to the data line Vdata and the initialization line Vref respectively. Figure 1An exemplary illustration shows an array substrate 100 disposed within a display panel 300. The display device 100 may include a display panel 200, which includes a substrate and a plurality of light-emitting elements D1 disposed on the substrate. Each light-emitting element D1 corresponds to a driving circuit 11. The display panel includes a first power line VDD, a second power line VSS, and multiple initialization lines Vref. Each driving circuit 11 is connected to the first power line VDD, the second power line VSS, and the initialization line Vref, respectively. The driving circuit 11 includes a plurality of thin-film transistors and a storage capacitor. The thin-film transistors may include a driving transistor T1 and a switching transistor. The driving transistor T1 and the light-emitting element D1 are sequentially connected between the first power line VDD and the second power line VSS. The driving transistor T1 can generate a driving current to drive the light-emitting element D1 connected to the driving circuit 11 to emit light, while the switching transistor mainly functions as a switch.

[0099] See Figure 7 The substrate may also include multiple scan lines (Scan), multiple data lines (Vdata), multiple light-emitting control lines (EM), and a control module 5. A driving circuit 11 can be positioned in the area defined by the intersection of the scan lines (Scan) and the data lines (Vdata). A scan signal is input to the corresponding driving circuit 11 via the scan lines (Scan). Under the action of the scan signal input via the scan lines (Scan) connected to it, the driving circuit 111 connects to the corresponding data lines (Vdata). The control module 5 inputs a data signal to the corresponding driving circuit 111 via the data lines (Vdata). The voltage of the data signal corresponds to the driving voltage, determining the brightness of the light-emitting element D1, i.e., determining the grayscale of the light-emitting element D1. It should be noted that the driving transistor, switching transistor, storage capacitor, and light-emitting element D1 can be connected in various ways to form various forms of pixel circuit 1. Figure 2 The pixel circuit 1 shown is just one example. There are other forms of pixel circuit 1, such as 3T1C pixel circuit 1, 7T1C pixel circuit 1 and 8T2C pixel circuit 1, etc., where T represents transistor and C represents capacitor. Figure 3 The example shown is of the 7T1C pixel circuit 1 and is not intended to limit the pixel circuit 1.

[0100] Combination Figure 7 and Figure 8The first power line VDD is used to transmit a first power signal, and the second power line VSS is used to transmit a second power signal. The voltage on the first power line VDD is typically a high-level voltage, and the voltage on the second power line VSS is typically a low-level voltage. During the light-emitting phase, the first power signal on the first power line VDD is applied to the first terminal of the driving transistor T1, and the second power signal on the second power line VSS is applied to the second terminal of the light-emitting element D1, for example, the second terminal is the cathode. The first and second power signals serve as the power source for the driving transistor T1 to generate a driving current, thereby causing the driving transistor T1 to generate a driving current that drives the light-emitting element D1 to emit light. The first power line VDD can be a signal line directly connected to one terminal (e.g., drain or source) of the driving transistor T1 in the pixel circuit 1, or it can be a signal line indirectly connected to one terminal of the driving transistor T1 in the pixel circuit 1 through a switching transistor (e.g., a light-emitting control transistor). The second power line VSS can be a signal line connected to the cathode of the light-emitting element D1. The initialization line Vref can be used to transmit an initialization signal to pixel circuit 1. For example, the initialization line Vref can be connected to the gate and storage capacitor of driving transistor T1 via a switching transistor. The initialization voltage is written to the gate and storage capacitor Cst of driving transistor T1 through the initialization line Vref and the connected switching transistor, initializing the gate and storage capacitor Cst of driving transistor T1 to clear residual charge in the current frame and prevent it from affecting the next frame. The initialization line Vref can also be connected to the anode of light-emitting element D1 via a switching transistor. The initialization voltage is written to the anode of light-emitting element D1 through the initialization line Vref and the connected switching transistor, initializing the potential of the anode of light-emitting element D1 to clear residual charge in the current frame and prevent it from affecting the next frame.

[0101] Optionally, based on the above embodiments, further combinations can be made... Figure 7 and Figure 8 When the data voltage of the next frame is greater than or equal to the data voltage of the current frame, the control module 5 controls the initialization line Vref not to output an initialization voltage; when the data voltage of the next frame is less than the data voltage of the current frame, the control module 5 controls the initialization line Vref to output a first initialization voltage, wherein the first initialization voltage is determined based on the data voltage of the current frame and the data voltage of the next frame.

[0102] Specifically, when the data voltage of the next frame is greater than the data voltage of the current frame, the gate-source voltage of the driving transistor is the sum of the data voltage of the current frame and the threshold voltage of the driving transistor, plus the difference between the current frame's data voltage and the next frame's data voltage. In other words, the gate-source voltage of the driving transistor is less than its threshold voltage. Therefore, the driving transistor can be turned on, and its gate does not need to be reset. The data voltage of the next frame can then be written to the anode of the light-emitting element D1. At this time, the control module 5 controls the initialization line Vref not to output an initialization voltage, effectively avoiding unnecessary waste of charge transferred on the initialization line Vref.

[0103] When the data voltage of the next frame equals the data voltage of the current frame, the data voltage of the current frame can be written, and the data voltage of the next frame, which is equal to the data voltage of the current frame, can also continue to be written. The gate of the driving transistor does not need to be reset, and the data voltage of the next frame can be written to the anode of the light-emitting element D1. At this time, the control module 5 controls the initialization line Vref not to output the initialization voltage, which can effectively avoid unnecessary waste of charge transferred on the initialization line Vref.

[0104] When the data voltage of the next frame is less than the data voltage of the current frame, the gate of the driving transistor needs to be reset before the data voltage of the next frame can be written to the gate of the driving transistor. At this time, the control module 5 controls the initialization line Vref to output the first initialization voltage. The first initialization voltage is determined based on the data voltage of the current frame and the data voltage of the next frame. The first initialization voltage needs to be less than the sum of the data voltage of the next frame and the threshold voltage of the driving transistor. This setting can ensure that the data voltage of the next frame is successfully written to the gate of the driving transistor, while also keeping the charge transferred on the initialization line Vref low, which can effectively avoid unnecessary waste of charge transferred on the initialization line Vref.

[0105] Optional, Figure 9 This is a schematic diagram of another display device provided in an embodiment of the present invention. Based on the above embodiments, see... Figure 9 Each column of pixel circuit 1 shares an initialization line Vref; adjacent columns of pixel circuit 1 use different initialization lines Vref.

[0106] Specifically, this configuration results in a larger number of initialization lines Vref, which facilitates the output of the corresponding initialization voltage or the non-transmission of the initialization voltage based on the next frame data voltage requirements of the light-emitting element D1 in pixel circuit 1. This further conserves charge on the initialization lines Vref and effectively avoids unnecessary waste of charge transmitted on the initialization lines Vref. It should be noted that... Figure 9The example shown illustrates a display device comprising n initialization lines, namely a first initialization line Vref1, a second initialization line Vref2, and an Nth initialization line Vrefn, without any limitation herein.

[0107] Optionally, based on the above embodiments, see also... Figure 9 The number of initialization lines Vref is equal to the number of data lines Vdata.

[0108] Specifically, this configuration allows the initialization line Vref to control each pixel circuit 1 individually, which improves the ability of the initialization line Vref to output different initialization voltages according to the needs of each pixel circuit 1. This facilitates precise control of the initialization signal of each pixel circuit 1, ensuring the display effect of the display device 100 while further saving the charge waste caused by the initialization voltage on the initialization line Vref.

[0109] Optionally, based on the above embodiments, see [link to relevant documentation]. Figure 9 When the data voltage of the next frame is less than the data voltage of the current frame, the control module 5 controls the initialization line Vref to output a first initialization voltage, wherein the first initialization voltage is less than the absolute value of the difference between the data voltage of the current frame and the data voltage of the next frame of the pixel circuit 1 connected to the initialization line Vref.

[0110] Specifically, the difference between the sum of the current frame's data voltage, the threshold value of the driving transistor, and the initialization voltage, and the next frame's data voltage, must be less than the threshold value of the driving transistor to allow the next frame's data voltage to be written to the anode of the driving transistor. In other words, when the next frame's data voltage is less than the current frame's data voltage, the control module 5 controls the initialization line Vref to output a first initialization voltage that is less than the absolute value of the difference between the current frame's data voltage and the next frame's data voltage in the pixel circuit 1 connected to the initialization line Vref. This setting ensures both the display effect of the display device 100 and further reduces charge waste caused by the initialization voltage on the initialization line Vref.

[0111] Optional, Figure 10 This is a schematic diagram of another display device provided in an embodiment of the present invention. Based on the above embodiments, see... Figure 10 The display device 100 provided in this embodiment of the invention may further include: a computing unit 6 and a storage module 7; the computing unit 6 is connected to the storage module 7, and the storage module 7 retrieves the data voltage of the current frame and the data voltage of the next frame from the computing unit 6; the data comparator 4 is connected to the storage module 7, and the data comparator 4 is used to receive the data voltage of the current frame and the data voltage of the next frame from the storage module 7.

[0112] Specifically, the computing unit 6 can be the central controller of the display device 100, the control module 5 can be a driver chip, and the storage module 7 can be RAM (Random Access Memory). The storage module 7 retrieves the data voltage of the current frame and the data voltage of the next frame from the computing unit 6. The data comparator 4 can be integrated into the driver chip. The data comparator 4 receives the data voltage of the current frame and the data voltage of the next frame stored in the storage module 7, which facilitates the comparison of the data voltage of the current frame and the data voltage of the next frame and generates a comparison result.

[0113] This configuration allows the data comparison module to obtain the data voltage of the current frame and the data voltage of the next frame. The control module 5 can then adjust the initialization voltage transmitted on the initialization line Vref based on the comparison result between the data voltage of the next frame and the data voltage of the current frame. When the data voltage of the next frame does not require initialization, the initialization voltage does not need to be transmitted on the initialization line Vref, thus effectively saving the wasted charge transmitted on the initialization line Vref. When the data voltage of the next frame requires initialization, the initialization voltage can be transmitted to the pixel circuit 1 on the initialization line Vref. This configuration effectively ensures the display effect of the display device 100 while saving the wasted charge caused by the initialization voltage on the initialization line Vref.

[0114] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0115] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A driving method for a display device, characterized in that, include: Receive data voltage; wherein, the data voltage includes the data voltage of the current frame and the data voltage of the next frame; The data voltage of the current frame is compared with the data voltage of the next frame to generate a comparison result; Based on the comparison results, adjust the initial voltage transmitted on the initialization line; The step of adjusting the initial voltage for transmission on the initialization line based on the comparison result includes: When the data voltage of the next frame is greater than or equal to the data voltage of the current frame, the initialization line is controlled not to output the initialization voltage. When the data voltage of the next frame is less than the data voltage of the current frame, the first initialization voltage is determined based on the data voltage of the current frame and the data voltage of the next frame, and the initialization line is controlled to output the first initialization voltage. The step of determining the first initialization voltage based on the data voltage of the current frame and the data voltage of the next frame includes: The difference between the data voltage of the next frame and the data voltage of the current frame is calculated to determine the difference between the data voltage of the next frame and the data voltage of the current frame for which the first initialization voltage is less than the difference between the data voltage of the pixel circuit connected to the initialization line.

2. The method according to claim 1, characterized in that, The received data voltage includes: The data voltage is received through a data comparator.

3. The method according to claim 1, characterized in that, The step of comparing the data voltage of the current frame with the data voltage of the next frame to generate a comparison result includes: The data comparator calculates the difference between the data voltage of the next frame and the data voltage of the current frame to generate a comparison result.

4. The method according to claim 1, characterized in that, Each column of pixel circuits shares a common initialization line; adjacent columns of pixel circuits use different initialization lines.

5. A display device, characterized in that, The display device is used to perform the driving method of the display device according to any one of claims 1 to 4; The display device includes: A data comparator is used to receive data voltage and compare the data voltage of the current frame with the data voltage of the next frame to generate a comparison result; wherein, the data voltage includes the data voltage of the current frame and the data voltage of the next frame; A control module is connected to the data comparator and is used to adjust the initialization voltage transmitted on the initialization line according to the comparison result.

6. The display device according to claim 5, characterized in that, The display device further includes: Multiple pixel circuits Multiple initialization lines are provided, which are used to transmit initialization voltage to the pixel circuit. Multiple data lines, which are used to transmit data voltage to the pixel circuit; The pixel circuit includes a driving circuit and a light-emitting element; the driving circuit is connected to the light-emitting element and is used to drive the light-emitting element to emit light. The driving circuit includes a driving transistor, and the initialization line is used to transmit an initialization voltage to the gate of the driving transistor so that the data line writes the data voltage to the anode of the light-emitting element.

7. The display device according to claim 6, characterized in that, The control module is specifically used for: When the data voltage of the next frame is greater than or equal to the data voltage of the current frame, the control module is used to control the initialization line not to output the initialization voltage; When the data voltage of the next frame is less than the data voltage of the current frame, the control module controls the initialization line to output a first initialization voltage, wherein the first initialization voltage is determined based on the data voltage of the current frame and the data voltage of the next frame.

8. The display device according to claim 7, characterized in that, The control module is specifically used for: When the data voltage of the next frame is less than the data voltage of the current frame, the initialization line is controlled to output a first initialization voltage, wherein the first initialization voltage is less than the difference between the data voltage of the next frame and the data voltage of the current frame of the pixel circuit connected to the initialization line; Each column of pixel circuits shares a common initialization line; adjacent columns of pixel circuits use different initialization lines.

9. The display device according to claim 8, characterized in that, The number of initialization lines is equal to the number of data lines.

10. The display device according to claim 9, characterized in that, The display device further includes: a computing unit and a storage module; The computing unit is connected to the storage module, and the storage module retrieves the data voltage of the current frame and the data voltage of the next frame from the computing unit. The data comparator is connected to the storage module and is used to receive the data voltage of the current frame and the data voltage of the next frame from the storage module.

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