Driving signal compensation circuit and liquid crystal display panel

By using the switching module and compensation module in the drive signal compensation circuit, the problem of unequal charging voltage between the irregular area and the regular area in the irregular screen was solved, thus achieving uniform brightness of the irregular screen and eliminating horizontal lines on the irregular screen.

CN117037741BActive Publication Date: 2025-12-26HKC CORP LTD
View PDF 2 Cites 0 Cited by

Patent Information

Application Number
CN202311136249.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-08-31
Publication Date
2025-12-26
Estimated Expiration
2043-08-31

AI Technical Summary

Technical Problem

Traditional driving methods for irregularly shaped screens result in different driving signal delay times between irregular and regular areas, leading to unequal charging voltages and causing horizontal lines on irregularly shaped screens.

Method used

A drive signal compensation circuit is adopted, including a first switch module, a second switch module and a compensation module. By combining the reverse drive voltage and the compensation voltage, the drive signals of the irregular area and the regular area are compensated respectively to ensure that the charging voltage is equal.

Benefits of technology

It effectively solves the problem of horizontal lines on irregularly shaped screens. By compensating the driving signals of irregular and regular areas, it ensures that the charging voltage of the two areas is equal, thus avoiding uneven brightness of irregularly shaped screens.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN117037741B_ABST
    Figure CN117037741B_ABST
Patent Text Reader

Abstract

The application discloses a driving signal compensation circuit and a liquid crystal display panel, and belongs to the technical field of display. The driving signal compensation circuit comprises a first switch module, the first switch module is connected with a gate driving voltage, and is connected with a high-level voltage end and a low-level voltage end, and the first switch module is used for providing a reverse driving voltage under the driving of the gate driving voltage; a second switch module, the second switch module is connected with a compensation driving voltage, and is connected with the high-level voltage end and the first switch module, and the second switch module is used for extracting a compensation voltage in the compensation driving voltage under the driving of the reverse driving voltage; and a compensation module, the compensation module is connected with a to-be-compensated driving voltage, and is connected with the second switch module and the low-level voltage end, and the compensation module is used for compensating the to-be-compensated driving voltage based on the compensation voltage, thereby solving the horizontal stripes of the special-shaped screen.
Need to check novelty before this filing date? Find Prior Art

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a driving signal compensation circuit and a liquid crystal display panel. BACKGROUND

[0002] With the rapid development of liquid crystal display, the user's driving requirements for liquid crystal display are also getting higher and higher, especially in the driving signal of the irregular area and the regular area in the irregular screen.

[0003] The traditional irregular screen driving mode is to directly drive the irregular area and the regular area by the same driving signal. This irregular screen driving mode has great defects. Due to the different loads of the irregular area and the regular area, the delay time of the driving signal of the two areas is different, that is, this irregular screen driving mode will cause the charging voltage of the two areas to be different due to the different delay time of the driving signal of the irregular area and the regular area, and then form the irregular screen horizontal line problem. SUMMARY

[0004] The main purpose of the present application is to provide a driving signal compensation circuit and a liquid crystal display panel, which aims to solve the technical problem of how to solve the irregular screen horizontal line problem.

[0005] To achieve the above purpose, the present application provides a driving signal compensation circuit, which comprises:

[0006] A first switch module is connected to a gate driving voltage and connected with a high-level voltage end and a low-level voltage end. The first switch module is used to provide a reverse driving voltage under the driving of the gate driving voltage.

[0007] A second switch module is connected to a compensation driving voltage and connected with the high-level voltage end and the first switch module. The second switch module is used to extract a compensation voltage in the compensation driving voltage under the driving of the reverse driving voltage.

[0008] A compensation module is connected to a to-be-compensated driving voltage and connected with the second switch module and the low-level voltage end. The compensation module is used to compensate the to-be-compensated driving voltage based on the compensation voltage.

[0009] Optionally, the first switch module comprises:

[0010] A first thin film transistor is connected with the first end of the first thin film transistor and then connected to the high-level voltage end. The second end of the first thin film transistor is connected with the second switch module.

[0011] Optionally, the first switch module further comprises:

[0012] a second thin film transistor, a control end of the second thin film transistor being connected to the gate drive voltage, a first end of the second thin film transistor being connected to the second end of the first thin film transistor, and a second end of the second thin film transistor being connected to the low-level voltage end.

[0013] Optionally, the second switch module comprises:

[0014] a third thin film transistor, a first end of the third thin film transistor being connected to the high-level voltage end, a control end of the third thin film transistor being connected to the second end of the first thin film transistor, and a second end of the third thin film transistor being connected to the compensation module.

[0015] Optionally, the second switch module further comprises:

[0016] a fourth thin film transistor, a first end of the fourth thin film transistor being connected to the second end of the third thin film transistor, a control end of the fourth thin film transistor being connected to the compensation drive voltage, and a second end of the fourth thin film transistor being connected to the compensation module.

[0017] Optionally, the compensation module comprises:

[0018] a fifth thin film transistor, a control end of the fifth thin film transistor being connected to the second end of the fourth thin film transistor, a second end of the fifth thin film transistor being connected to the low-level voltage end, and a first end of the fifth thin film transistor being connected to the to-be-compensated drive voltage.

[0019] Optionally, the drive signal compensation circuit comprises a first drive voltage and a second drive voltage to be compensated, when the first drive voltage is the compensation drive voltage, the second drive voltage is the to-be-compensated drive voltage, and the compensation module is configured to compensate the second drive voltage based on the compensation voltage of the first drive voltage.

[0020] Optionally, when the second drive voltage is the compensation drive voltage, the first drive voltage is the to-be-compensated drive voltage, and the compensation module is configured to compensate the first drive voltage based on the compensation voltage of the second drive voltage.

[0021] Optionally, the drive signal compensation circuit further comprises:

[0022] a first switch module, the first switch module being connected to a gate drive voltage and connected to a high-level voltage end and a low-level voltage end, and the first switch module being configured to provide a reverse drive voltage under the drive of the gate drive voltage.

[0023] The second switch module is connected with the high voltage end, the first switch module and the driving voltage to be compensated, and is used for extracting a compensation voltage in the compensation driving voltage under the driving of the reverse driving voltage and compensating the driving voltage to be compensated based on the compensation voltage.

[0024] In addition, to achieve the above object, the application further provides a liquid crystal display panel, comprising a color film substrate, a liquid crystal layer and an array substrate, the liquid crystal layer is arranged between the array substrate and the color film substrate, and the array substrate comprises the pixel structure as described above.

[0025] The application provides a driving signal compensation circuit and a liquid crystal display panel. The application optimizes the driving signal compensation circuit, and obtains a driving signal compensation circuit. The driving signal compensation circuit comprises a first switch module, a second switch module and a compensation module. Because the loads of the special-shaped area and the conventional area are different, the delay times of the driving signals of the special-shaped area and the conventional area are different, the charging voltages of the two areas are different, and the horizontal stripe problem of the special-shaped screen is caused. The application combines the above modules. The first switch module provides a reverse driving voltage under the driving of a gate driving voltage. The second switch module extracts a compensation voltage in a compensation driving voltage under the driving of the reverse driving voltage. Finally, the driving voltage to be compensated is compensated based on the compensation voltage. The driving signals of the special-shaped area and the conventional area can be compensated based on the above modules to ensure that the charging voltages of the two areas are equal, and the horizontal stripe problem of the special-shaped screen caused by the different charging voltages of the special-shaped area and the conventional area in the special-shaped screen is solved. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute some embodiments of the application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0027] Figure 1 The figure is a functional module schematic diagram of an embodiment of the driving signal compensation circuit of the application.

[0028] Figure 2 The figure is a circuit connection schematic diagram of an embodiment of the driving signal compensation circuit of the application.

[0029] Figure 3 The figure is a signal schematic diagram of the special-shaped area and the conventional area of the existing special-shaped screen.

[0030] Figure 4Signal waveform schematic diagram of an embodiment of the driving signal compensation circuit of the present application;

[0031] Figure 5 Signal waveform schematic diagram of another embodiment of the driving signal compensation circuit of the present application;

[0032] Figure 6 Structure schematic diagram of the liquid crystal display panel involved in the embodiment of the present application;

[0033] Figure 7 Function module schematic diagram of another embodiment of the driving signal compensation circuit of the present application;

[0034] Figure 8 Circuit connection schematic diagram of another embodiment of the driving signal compensation circuit of the present application.

[0035] Explanation of the reference signs:

[0036] Reference numerals Names Reference numerals Names 1001 Processor 1002 Communication bus 1003 User interface 1004 Network interface 1005 Memory 10 First switch module 20 Second switch module 30 Compensation module Vdata Gate drive voltage Vdata1 First drive voltage Vdata2 Second drive voltage VGH High voltage end VGL Low voltage end T1 First thin film transistor T2 Second thin film transistor T3 Third thin film transistor T4 Fourth thin film transistor T5 Fifth thin film transistor Tf1 Delay time of first drive voltage Tf2 Delay time of second drive voltage

[0037] The implementation, functional features and advantages of the present application will be further explained with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0038] It should be understood that the specific embodiments described herein merely serve to explain the present application and do not serve to limit the present application.

[0039] The embodiment of the present application provides a driving signal compensation circuit, referring to Figure 1 , Figure 1 Function module schematic diagram of an embodiment of the driving signal compensation circuit of the present application.

[0040] In the embodiment, the driving signal compensation circuit comprises:

[0041] The first switch module 10 is connected to the gate driving voltage Vdata and connected to the high-level voltage end VGH and the low-level voltage end VGL, and is configured to provide a reverse driving voltage under the driving of the gate driving voltage Vdata.

[0042] The second switch module 20 is connected to the compensation driving voltage and connected to the high-level voltage end VGH and the first switch module 10, and is configured to extract a compensation voltage in the compensation driving voltage under the driving of the reverse driving voltage.

[0043] The compensation module 30 is connected to the to-be-compensated driving voltage and connected to the second switch module 20 and the low-level voltage end VGL, and is configured to compensate the to-be-compensated driving voltage based on the compensation voltage.

[0044] It should be noted that, in the special-shaped screen, due to the different loadings of the gate lines in the special-shaped area and the conventional area, the gate signal delay time of the special-shaped area and the conventional area is different, as shown in Figure 3 Figure 3 The signal diagram of the special-shaped area and the conventional area of the existing special-shaped screen is shown in

[0045] In the embodiment, the reverse driving voltage is provided by the first switch module 10 under the driving of the gate driving voltage Vdata, wherein the reverse driving voltage refers to the voltage opposite to the high and low levels of the gate driving voltage Vdata, and then the compensation voltage in the compensation driving voltage is extracted by the second switch module 20 under the action of the reverse driving voltage. The compensation driving voltage refers to the reference voltage that needs to be compensated for other voltages, and the compensation voltage refers to the voltage that needs to be compensated for other voltages. Finally, the compensation voltage can be compensated to the to-be-compensated driving voltage in the compensation module 30, and the to-be-compensated driving voltage refers to the reference voltage that needs to be compensated for the compensation driving voltage, and then the voltage compensation can be completed. For details, please refer to Figure 3 The core idea of the present application is to compensate the voltage of Tf2 of Vdata2 to Vdata1, and output Vdata1 for special-shaped area control, and compensate the voltage of Tf1 of Vdata1 to Vdata2, and output Vdata2 for conventional area control, so as to ensure that the waveforms of the conventional area Vdata2 and the special-shaped area Vdata1 are similar, so as to ensure that the charging voltages of the two areas are equal, and then the horizontal line problem of the special-shaped screen is solved.

[0046] Further, please refer to Figure 2 , Figure 2 The circuit connection and physical schematic diagram of an embodiment of the driving signal compensation circuit of the present application are shown in

[0047] As​Figure 2 As shown in some possible embodiments, the first switch module 10 comprises:

[0048] a first thin film transistor T1, a control terminal of the first thin film transistor T1 is connected with a first terminal of the first thin film transistor T1 and then connected with the high-level voltage terminal VGH, and a second terminal of the first thin film transistor T1 is connected with the second switch module 20.

[0049] Further, in some possible embodiments, the first switch module 10 further comprises:

[0050] a second thin film transistor T2, a control terminal of the second thin film transistor T2 is connected with the gate drive voltage Vdata, a first terminal of the second thin film transistor T2 is connected with the second terminal of the first thin film transistor T1, and a second terminal of the second thin film transistor T2 is connected with the low-level voltage terminal VGL.

[0051] Further, in some possible embodiments, the second switch module 20 comprises:

[0052] a third thin film transistor T3, a first terminal of the third thin film transistor T3 is connected with the high-level voltage terminal VGH, a control terminal of the third thin film transistor T3 is connected with the second terminal of the first thin film transistor T1, and a second terminal of the third thin film transistor T3 is connected with the compensation module 30.

[0053] Further, in some possible embodiments, the second switch module 20 further comprises:

[0054] a fourth thin film transistor T4, a first terminal of the fourth thin film transistor T4 is connected with the second terminal of the third thin film transistor T3, a control terminal of the fourth thin film transistor T4 is connected with the compensation drive voltage, and a second terminal of the fourth thin film transistor T4 is connected with the compensation module 30.

[0055] Further, in some possible embodiments, the compensation module 30 comprises:

[0056] a fifth thin film transistor T5, a control terminal of the fifth thin film transistor T5 is connected with the second terminal of the fourth thin film transistor T4, a second terminal of the fifth thin film transistor T5 is connected with the low-level voltage terminal VGL, and a first terminal of the fifth thin film transistor T5 is connected with the to-be-compensated drive voltage.

[0057] In the embodiment, when the gate driving voltage Vdata is inputted with high level, the second thin film transistor T2 is turned on, and the voltage of point A is low; when the gate driving voltage Vdata is inputted with low level, the second thin film transistor T2 is not turned on, and at this time the first thin film transistor T1 is turned on, point A is directly connected to the high level voltage terminal VGH, and the voltage of point A is high. It can be known that the waveform of point A is opposite to the gate driving voltage Vdata, that is, the reverse driving voltage. The voltage of point A controls the third thin film transistor T3, and controls the fourth thin film transistor T4 together with the compensation driving voltage to control the voltage of point B, and the reference Figure 2 , the first driving voltage Vdata1 is used as the compensation driving voltage to control the voltage of point B together with the voltage of point A, and then the voltage waveform of the delay time Tf1 of the first driving voltage Vdata1 is outputted when the voltage of point A is high. It can be referred to Figure 4 , Figure 4 The signal waveform schematic diagram of the embodiment of the driving signal compensation circuit of the application is shown in the figure, the voltage of point B actually obtains the voltage waveform of the first driving voltage Vdata1 in the delay time Tf1, and the voltage value of the pull-up is positively correlated with the voltage value of the first driving voltage Vdata1 in the delay time Tf1. The fifth thin film transistor T5 is controlled by the voltage of point B, and then the second driving voltage Vdata2 is obtained after the second driving voltage Vdata2 is compensated by the voltage of point B. That is, the fifth thin film transistor T5 is controlled after the voltage of point B is pulled up, the voltage value of the second driving voltage Vdata2 (the far end signal of the Gate line of the conventional area) in the delay time Tf2 is lengthened, and the lengthening amount of the voltage value in the delay time Tf2 is positively correlated with the voltage value of the delay time Tf1. Then the second driving voltage Vdata2 is compensated, and the first driving voltage Vdata1 is compensated by the same circuit, so that the charging voltage under the action of the first driving voltage Vdata1 and the second driving voltage Vdata2 can be equal, and then the horizontal stripe problem of the special-shaped screen can be solved.

[0058] It should be noted that the transistors used in all the embodiments of the application can be TFTs (Thin Film Transistors), field effect tubes or other devices with the same characteristics. Since the second end and the first end of the transistor used here are symmetrical, the second end and the first end can be interchangeable. In the embodiments of the application, in order to distinguish the two poles of the transistor except the gate, one pole is called the second end, and the other pole is called the first end. Figure 2 In the figure, the characteristics of each port of the first thin film transistor T1 can be determined according to the G, D and S labels in the figure, wherein G is the control end of T1, S is the second end of T1, and D is the first end of T1. Alternatively, S can be the first end of T1, and D can be the second end of T1. The control principle is the same here. The characteristics of the other transistors can be determined according to the above method. Figure 2The polarities of the transistors in the circuit are defined as follows: the middle terminal of each transistor is the gate, the signal input terminal is the second terminal, and the signal output terminal is the first terminal. In addition, the transistors used in the embodiments of the present application can include both P-type transistors and / or N-type transistors, wherein the P-type transistor is turned on when the gate is at a low level and is turned off when the gate is at a high level, and the N-type transistor is turned on when the gate is at a high level and is turned off when the gate is at a low level. The control end driving voltage Vgate and the second gate driving voltage Share_Vgate of the corresponding N-type and P-type transistors are different in the on mode, and the corresponding control mode also has differences. The actual transistor is controlled specifically, which is not limited herein.

[0059] Further, in some possible embodiments, the first thin film transistor T1 and the fifth thin film transistor T5 can be low-temperature polysilicon thin film transistors, oxide semiconductor thin film transistors, or amorphous silicon thin film transistors. The transistors in the driving circuit provided by the embodiments of the present application are the same type of transistors, thereby avoiding the influence of the differences between transistors of different materials on the driving circuit.

[0060] Further, in some possible embodiments, the first thin film transistor T1 and the fifth thin film transistor T5 can be low-temperature polysilicon thin film transistors, oxide semiconductor thin film transistors, or amorphous silicon thin film transistors. The transistors in the driving circuit provided by the embodiments of the present application are the same type of transistors, thereby avoiding the influence of the differences between transistors of different materials on the driving circuit. Figure 8 , Figure 8 FIG. 6 is a circuit connection diagram and a physical schematic diagram of another embodiment of a driving signal compensation circuit according to the present application. The driving signal compensation circuit includes a first driving voltage Vdata1 to be compensated and a second driving voltage Vdata2 to be compensated. When the first driving voltage Vdata1 is the compensation driving voltage, the second driving voltage Vdata2 is the driving voltage to be compensated. The compensation module is configured to compensate the second driving voltage Vdata2 based on the compensation voltage of the first driving voltage Vdata1.

[0061] Further, in some possible embodiments, when the second driving voltage Vdata2 is the compensation driving voltage, the first driving voltage Vdata1 is the driving voltage to be compensated. The compensation module is configured to compensate the first driving voltage Vdata1 based on the compensation voltage of the second driving voltage Vdata2.

[0062] In the embodiment, when the first driving voltage Vdata1 is the compensation driving voltage, the second driving voltage Vdata2 is the driving voltage to be compensated, the compensation module is configured to compensate the second driving voltage Vdata2 based on the compensation voltage of the first driving voltage Vdata1, and when the second driving voltage Vdata2 is the compensation driving voltage, the first driving voltage Vdata1 is the driving voltage to be compensated, the compensation module is configured to compensate the first driving voltage Vdata1 based on the compensation voltage of the second driving voltage Vdata2, so that the driving voltage compensation of the special-shaped area and the regular area can be realized, the charging voltages of the two areas are ensured to be equal, and the horizontal lines of the special-shaped screen are avoided, that is, the circuit can realize the compensation of the two voltages, that is, the output after the compensation of one voltage by the other voltage, and the output after the compensation of the other voltage by the one voltage, that is, the above driving signal compensation circuit is connected to the output ports of the one voltage and the other voltage to compensate.

[0063] For example, if there are multiple driving voltages to be compensated, any two of the driving voltages are compensated based on the above circuit, and then the remaining driving voltages are sequentially compensated, so that the functionality of the entire circuit can be improved.

[0064] Further, in some possible embodiments, referring to Figure 7 , Figure 7 The figure is a functional module schematic diagram of another embodiment of the driving signal compensation circuit of the present application, and the driving signal compensation circuit further comprises:

[0065] The first switch module 10 is connected to the gate driving voltage Vdata and connected with the high-level voltage end VGH and the low-level voltage end VGL, and the first switch module 10 is configured to provide a reverse driving voltage under the driving of the gate driving voltage Vdata.

[0066] The second switch module 20 is connected to the compensation driving voltage and connected with the high-level voltage end VGH, the first switch module 10 and the driving voltage to be compensated, and the second switch module 20 is configured to extract a compensation voltage in the compensation driving voltage under the driving of the reverse driving voltage and compensate the driving voltage to be compensated based on the compensation voltage.

[0067] In the embodiment, when the fifth thin film transistor T5 exists, the switching delay characteristic of the fifth thin film transistor T5 can be used to compensate the voltage at point B to the driving voltage to be compensated, that is, when the fifth thin film transistor T5 is not completely opened and is in communication with the low-level voltage end VGL, the compensation voltage is compensated to the driving voltage to be compensated. It can also be directly connected with the driving unit of the driving voltage to be compensated, so as to realize direct compensation, and the functionality of the driving signal compensation circuit can be improved.

[0068] This embodiment proposes a drive signal compensation circuit and a liquid crystal display panel. This application optimizes the drive signal compensation circuit, resulting in a drive signal compensation circuit comprising: a first switching module, a second switching module, and a compensation module. Because the loads of the irregularly shaped area and the regular area are different, the delay times of the drive signals in the irregularly shaped area and the regular area are different, leading to unequal charging voltages in the two areas, thus forming horizontal lines on the irregularly shaped screen. This application combines the above modules: the first switching module provides a reverse drive voltage under the drive of the gate drive voltage; then, the second switching module extracts the compensation voltage from the compensation drive voltage under the drive of the reverse drive voltage; finally, the compensation voltage is used to compensate the drive voltage to be compensated. Therefore, the drive signals of the irregularly shaped area and the regular area can be compensated separately based on the above modules to ensure that the charging voltages of the two areas are equal, thereby solving the problem of horizontal lines on the irregularly shaped screen caused by unequal charging voltages between the irregularly shaped area and the regular area.

[0069] Furthermore, this application also proposes a liquid crystal display panel, which includes at least a color filter substrate, a liquid crystal layer, and an array substrate. The liquid crystal layer is disposed between the array substrate and the color filter substrate, and the array substrate includes the pixel structure described above. The liquid crystal display panel may also include the pixel structure described above, see reference... Figure 6 , Figure 6 This is a schematic diagram of the structure of the liquid crystal display panel involved in the embodiments of this application.

[0070] like Figure 6 As shown, the liquid crystal display panel may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen and an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wi-Fi interface). The memory 1005 may be a high-speed random access memory (RAM) or a stable non-volatile memory (NVM), such as a disk drive. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0071] Those skilled in the art will understand thatFigure 6 The structure shown in the figure does not constitute a limitation on the liquid crystal display panel, and can include more or fewer components than shown, or combine certain components, or different component arrangements.

[0072] As shown in Figure 6 The memory 1005 as a storage medium can include an operating system, a data storage module, a network communication module, a user interface module, and a computer program.

[0073] In Figure 6 In the liquid crystal display panel shown, the network interface 1004 is mainly used for data communication with other devices; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the embodiment can be arranged in the liquid crystal display panel, and the liquid crystal display panel controls the above-mentioned drive signal compensation circuit by calling the computer program stored in the memory 1005 through the processor 1001.

[0074] The embodiments of the liquid crystal display panel of the present application can refer to the embodiments of the drive signal compensation circuit of the present application, which will not be described here.

[0075] It should be noted that in this paper, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or system. Without more limitations, the element defined by the statement "includes a" does not exclude the presence of another identical element in the process, method, article or system including the element.

[0076] The above-mentioned embodiment number of the present application is only for description, not representing the advantages and disadvantages of the embodiments.

[0077] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment method can be realized by software plus the necessary general hardware platform, of course, it can also be realized by hardware, but in many cases the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a plurality of instructions for making a terminal device (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) execute the method described in each embodiment of the present application.

[0078] The above merely preferred embodiments of the present application and are not intended to limit the patent scope of the present application, any equivalent structure or equivalent process transformation made by using the content of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A drive signal compensation circuit, characterized by, The driving signal compensation circuit comprises: The first switch module is connected to the gate driving voltage and connected to the high voltage end and the low voltage end, and is used to provide a reverse driving voltage under the driving of the gate driving voltage, and comprises: The first thin film transistor is connected to the high voltage end after the control end is connected to the first end, and the second end is connected to the second thin film transistor; The second thin film transistor is connected to the low voltage end after the control end is connected to the gate driving voltage, and the first end is connected to the high voltage end, and the second end is connected to the low voltage end; The second switch module is connected to the compensation driving voltage and connected to the high voltage end and the first switch module, and is used to extract the compensation voltage in the compensation driving voltage under the driving of the reverse driving voltage, and comprises: The third thin film transistor is connected to the high voltage end after the control end is connected to the first end, and the second end is connected to the compensation module; The fourth thin film transistor is connected to the second end of the third thin film transistor, and the control end is connected to the compensation driving voltage, and the second end is connected to the compensation module; The compensation module is connected to the to-be-compensated driving voltage and connected to the second switch module and the low voltage end, and is used to compensate the to-be-compensated driving voltage based on the compensation voltage, and comprises: The fifth thin film transistor is connected to the second end of the fourth thin film transistor, and the second end is connected to the low voltage end, and the first end is connected to the to-be-compensated driving voltage, wherein the compensation driving voltage and the gate driving voltage drive the corresponding modules at the same time, and reach the highest level point at the same time, and the compensation driving voltage is the driving voltage of the special-shaped area or the conventional area.

2. The drive signal compensation circuit of claim 1, wherein, The driving signal compensation circuit comprises a first driving voltage and a second driving voltage to be compensated, and when the first driving voltage is the compensation driving voltage, the second driving voltage is the to-be-compensated driving voltage, and the compensation module is used to compensate the second driving voltage based on the compensation voltage of the first driving voltage.

3. The drive signal compensation circuit of claim 2, wherein, When the second driving voltage is the compensation driving voltage, the first driving voltage is the to-be-compensated driving voltage, and the compensation module is used to compensate the first driving voltage based on the compensation voltage of the second driving voltage.

4. The drive signal compensation circuit of claim 1, wherein, The driving signal compensation circuit further comprises: A first switch module is connected to a gate driving voltage and connected to a high voltage terminal and a low voltage terminal, and is configured to provide a reverse driving voltage under the driving of the gate driving voltage. A second switch module is connected to a compensation driving voltage and connected to the high voltage terminal, the first switch module and a driving voltage to be compensated, and is configured to extract a compensation voltage in the compensation driving voltage under the driving of the reverse driving voltage, and compensate the driving voltage to be compensated based on the compensation voltage.

5. A liquid crystal display panel, characterized by comprising: The liquid crystal display panel comprises a color filter substrate, a liquid crystal layer and an array substrate, the liquid crystal layer is arranged between the array substrate and the color filter substrate, and the array substrate comprises the driving signal compensation circuit according to any one of claims 1-4.

Citation Information

Patent Citations

  • Gate driving circuit and a display device thereof

    CN109637429A

  • Display substrate, panel and device

    CN115985207A