CN217008621U

CN217008621U - Display adjusting circuit and display device

Info

Publication number: CN217008621U
Application number: CN202220240994.4U
Authority: CN
Inventors: 刘欢; 郑浩旋
Original assignee: HKC Co Ltd; Mianyang HKC Optoelectronics Technology Co Ltd
Current assignee: HKC Co Ltd; Mianyang HKC Optoelectronics Technology Co Ltd
Priority date: 2022-01-28
Filing date: 2022-01-28
Publication date: 2022-07-19
Anticipated expiration: 2032-01-28

Abstract

The application discloses show regulating circuit and display device is applied to liquid crystal display technical field. The method comprises the steps that leakage current of a display panel is obtained through a monitoring circuit; when the leakage current of the display panel is not in a preset leakage current interval, determining a turn-off voltage compensation value according to the leakage current of the display panel and a preset leakage current; the preset leakage current is selected from the preset leakage current interval; and feeding back the turn-off voltage compensation value to the driving circuit so that the driving circuit adjusts the leakage current of the display panel to the preset leakage current interval through the turn-off voltage compensation value. The problem of after the scanning line of drive circuit closes, TFT electric leakage increases and leads to crosstalking is aimed at solving in this application, improves display panel's display effect through the technical scheme of this application.

Description

Display adjusting circuit and display device

Technical Field

The application relates to the technical field of display, in particular to a display adjusting circuit and a display device.

Background

With social development and technological progress, people increasingly have a strong demand for high refresh rate and ultra-high definition of displays. At present, the mainstream displays with large size, ultra-high definition and high refresh rate in the market improve the viewing experience of people, but also bring the design problem: due to aging of the display or process variation, an amorphous silicon TFT is used in the driving part. In practical applications, after the scan lines of the driving circuit are turned off, the TFT leakage increases to cause crosstalk, thereby affecting the display effect of the display.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application aims to solve the problem that crosstalk is caused by increase of TFT electric leakage after a scanning line of a driving circuit is closed.

The embodiment of the application provides a display adjusting circuit, display adjusting circuit includes:

the monitoring circuit is used for acquiring leakage current of the display panel; when the leakage current of the display panel is not in a preset leakage current interval, determining a turn-off voltage compensation value according to the leakage current of the display panel and a preset leakage current, and feeding back the turn-off voltage compensation value to a driving circuit; the preset leakage current is selected from the preset leakage current interval;

and the driving circuit is connected with the monitoring circuit and is used for compensating the leakage current of the display panel through the turn-off voltage compensation value so as to enable the leakage current of the display panel to be in the preset leakage current interval.

In one embodiment, the driving circuit includes:

the driving device comprises a first driving module and a second driving module; the first driving module comprises a plurality of driving switches; the second driving module comprises a plurality of reference driving switches, and each driving switch is provided with a corresponding reference driving switch; the first driving module and the second driving module are connected to include:

and the drain electrode of each driving switch is connected with the source electrode of the corresponding reference driving switch.

In one embodiment, the first driving module includes a first driving switch, a second driving switch and a third driving switch; the second driving module comprises a first reference driving switch, a second reference driving switch and a third reference driving switch; the connection of the drain of each driving switch and the source of the corresponding reference driving switch comprises:

the drain electrode of the first driving switch is connected with the source electrode of the first reference driving switch;

the drain electrode of the second driving switch is connected with the source electrode of the second reference driving switch;

the drain of the third drive switch is connected to the source of the third reference drive switch.

In an embodiment, the gate of each driving switch and the gate of the corresponding reference driving switch are connected to a scan line in a horizontal direction, and the source of each driving switch and the source of the corresponding reference driving switch are connected to a data line in a vertical direction.

In an embodiment, the second driving module is disposed in the non-display area.

In one embodiment, the monitoring circuit further comprises: the circuit comprises an adjustable resistor, a comparator, a first switch and a second switch; one end of the adjustable resistor is connected with the first input end of the comparator, and the other end of the adjustable resistor is grounded; a second input end of the comparator is connected with a grid electrode of the first driving module and one end of the first switch, and an output end of the comparator is connected with one end of the second switch; the other end of the first switch is connected with the other end of the second switch and the grid electrode of the second driving module;

the comparator is used for determining a turn-off voltage corresponding to the leakage current of the display panel and acquiring a preset turn-off voltage corresponding to the preset leakage current; determining a target resistance value of the adjustable resistor according to a turn-off voltage corresponding to the leakage current of the display panel and a preset turn-off voltage corresponding to the preset leakage current;

the adjustable resistor is used for adjusting the resistance value of the adjustable resistor to the target resistance value, so that the leakage current of the display panel is located in the preset leakage current interval when the target resistance value is reached.

In an embodiment, when the first switch is turned off and the second switch is turned off, the adjustable resistor is used for adjusting the adjustable resistor based on the off-voltage compensation value to adjust the leakage current of the display panel to the preset leakage current interval.

In an embodiment, when the monitor circuit obtains the leakage current of the display panel, the first switch is turned on and the second switch is turned off.

In an embodiment, the monitoring circuit is further configured to establish a mapping relationship between a sample of a leakage current of the display panel and a sample of an off-voltage of the driving circuit; generating a display lookup table according to the mapping relation between the samples of the leakage current and the samples of the turn-off voltage;

the determining of the off-voltage compensation value according to the leakage current of the display panel and a preset leakage current includes:

respectively searching a first mapping relation matched with the leakage current of the display panel and a second mapping relation matched with the preset leakage current of the display panel in the display lookup table;

determining a first turn-off voltage corresponding to the leakage current of the display panel based on the first mapping relation, and determining a second turn-off voltage corresponding to a preset leakage current of the display panel based on the second mapping relation;

and determining a turn-off voltage compensation value according to the difference value of the first turn-off voltage and the second turn-off voltage.

Further, to achieve the above object, the present application also provides a display device including: a color film substrate; the array substrate comprises a display area and a non-display area, and the driving circuit is arranged in the non-display area; and the liquid crystal layer is arranged between the color film substrate and the array substrate.

According to the technical scheme of the display adjusting circuit and the display device, the monitoring circuit is arranged outside the driving circuit. And acquiring the leakage current of the display panel through the monitoring circuit. And judging whether the leakage current of the display panel is in a preset leakage current interval or not, and further adjusting the turn-off voltage when the leakage current of the display panel is not in the preset leakage current interval. At the moment, a turn-off voltage compensation value is determined according to the leakage current of the display panel and a preset leakage current, and the turn-off voltage compensation value is fed back to the driving circuit, so that the driving circuit adjusts the leakage current of the display panel to a preset leakage current interval through the turn-off voltage compensation value. In the process, the leakage current of the TFT component is reduced to a preset leakage current interval, so that the problem of crosstalk caused by the increase of the leakage current of the TFT after the scanning line of the driving circuit is closed is solved, and the display effect of the display is improved.

Drawings

FIG. 1 is a schematic flow chart diagram illustrating a first embodiment of a regulating circuit according to the present application;

FIG. 2 is a detailed schematic diagram of a first embodiment of the present application showing a conditioning circuit;

FIG. 3 is a detailed schematic diagram of a first embodiment of the present application showing a conditioning circuit;

FIG. 4 is a detailed schematic diagram of a second embodiment of the present application showing a conditioning circuit;

FIG. 5 is a schematic diagram of a second embodiment of the present application showing a conditioning circuit.

The objects, features, and advantages of the present application are further described in connection with the embodiments, with reference to the accompanying drawings, which are a single embodiment and are not intended to be a complete description of the application.

Detailed Description

For a better understanding of the above technical solutions, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The following discussion will proceed with specific examples.

The first embodiment:

as shown in fig. 1, in a first embodiment of the present application, a display adjusting circuit of the present application includes:

a monitoring circuit 10 for obtaining a leakage current of the display panel; when the leakage current of the display panel is not in a preset leakage current interval, determining a turn-off voltage compensation value according to the leakage current of the display panel and a preset leakage current, and feeding back the turn-off voltage compensation value to a driving circuit; the preset leakage current is selected from the preset leakage current interval;

and the driving circuit 20 is connected with the monitoring circuit 10, and is used for compensating the leakage current of the display panel through the turn-off voltage compensation value so as to enable the leakage current of the display panel to be in the preset leakage current interval.

In this embodiment, a matrix type pixel unit is distributed on both the array substrate and the color filter substrate. Referring to fig. 3, each pixel on the array substrate has a driving switch, a scan line in a horizontal direction, and a data line in a vertical direction. All the pixels in the same row of the TFT-LCD have the grid electrodes of the driving switches connected together and connected to the scanning line; the sources of the two are connected together and connected to the data line; the respective drains are connected to the pixel electrodes of the pixels. The voltage applied by the scan line in the horizontal direction is the TFT on and off voltage for the pixels in the row. For example, taking an N-type TFT as an example, when the scan line of the row outputs a high level, the TFTs of all pixels of the row are turned on, and then the data line corresponding to the column where each pixel of the row is located outputs a corresponding display signal, so as to charge the corresponding pixel electrode to the voltage of the desired display frame. And after the charging is finished, the scanning line of the row outputs a turn-off voltage, the TFT is turned off, and the pixel electrode of the row keeps the charging voltage until the signal is rewritten next time. In this way, the scanning lines are turned on line by line to charge the pixels of the whole screen, and when the next frame comes, the TFTs are turned on again line by line starting from the first scanning line to charge the pixels again. Taking N-type TFTs as an example, the scan lines output high levels only when each row is turned on, while the data lines need to output signals continuously. The TFT-LCD controls the conduction state between the source and the drain by controlling the magnitude of the gate voltage of the TFT, turning the TFT on and off. By controlling the turning on and off of each TFT, the display pixels are connected or disconnected from the source of the drive signal to present a different display. Because each pixel has its own driving switch, each pixel can operate independently and is not easily affected by other pixels.

Taking the N-type TFT as an example, when the nth row of scanning lines outputs a high level, the row of pixel TFTs are turned on, and the data lines input voltages required for the display of each pixel to charge the pixel electrodes. Subsequently the scan line is turned off and the pixel electrode potential should be in a hold state until the next time its TFT is turned on. However, in practice, after the scan lines are turned off, the pixel electrodes cannot be kept at the required display potentials, and leakage current is generated on the TFTs, so that the pixel electrodes leak to their own data lines, which causes display gray scale variation, thereby causing crosstalk.

In the present embodiment, in order to solve the problem that crosstalk is caused by an increase in TFT leakage after the scan line of the driving circuit is turned off. The present application designs a display adjusting circuit, and the present application arranges a monitoring circuit 20 outside a driving circuit 10. The monitoring circuit monitors the leakage current of the display panel (namely the leakage current of the TFT), and judges whether the leakage current is in a preset leakage current interval. When the leakage current is not in the preset leakage current interval, the turn-off voltage is automatically adjusted through the adjustable resistor, so that the leakage current of the TFT component is reduced to the preset leakage current interval. Compared with the traditional mode, the technical scheme has the advantages that the monitoring circuit is additionally arranged outside the driving circuit to monitor the leakage current of the display panel in real time, and the turn-off voltage value is adjusted through the adjustable resistor, so that the leakage current of the display panel reaches the preset leakage current interval.

In the present embodiment, the display adjustment circuit includes a driving circuit and a monitoring circuit. The monitoring circuit is located outside the drive circuit. The driving circuit is used for driving the display panel to display. The monitoring circuit is used for obtaining the leakage current of the display panel, determining a turn-off voltage compensation value according to the leakage current and a preset leakage current, and then adjusting the driving circuit by adopting the turn-off voltage compensation value, so that the driving circuit adjusts the leakage current of the display panel to a preset leakage current interval through the turn-off voltage compensation value.

In this embodiment, specifically, after the monitor circuit obtains the leakage current of the display panel, the relationship between the leakage current of the display panel and the preset leakage current interval is determined. The preset leakage current interval may be set according to an actual situation, for example, may be determined according to a model of a display or a performance of the display. The preset leakage current interval comprises a plurality of preset leakage current values. In the practical application process, a proper preset leakage current can be selected from the preset leakage current interval, and the preset leakage current is set in the monitoring circuit to be used as a reference value. When the leakage current of the display panel is within the preset leakage current interval, the display effect of the display panel is good. When the leakage current of the display panel is not in the preset leakage current interval, the leakage current of the display panel needs to be controlled in the preset leakage current interval. Specifically, the turn-off voltage compensation value is determined according to the leakage current of the display panel and a preset leakage current. And compensating the turn-off voltage by adopting the turn-off voltage compensation value.

In this embodiment, after the off-voltage compensation value is obtained, the off-voltage compensation value is superimposed on the original off-voltage value. The superposed turn-off voltage is adopted to drive the driving circuit, so that the leakage current of the display panel can be in a preset leakage current interval when the driving circuit works at the superposed turn-off voltage.

According to the technical scheme, the monitoring circuit is arranged outside the driving circuit. And acquiring the leakage current of the display panel through the monitoring circuit. And judging whether the leakage current of the display panel is in a preset leakage current interval or not, and further adjusting the turn-off voltage when the leakage current of the display panel is not in the preset leakage current interval. At the moment, a turn-off voltage compensation value is determined according to the leakage current of the display panel and a preset leakage current, and the turn-off voltage compensation value is fed back to the driving circuit, so that the driving circuit compensates the leakage current of the display panel through the turn-off voltage compensation value, and the leakage current of the display panel is in the preset leakage current interval. In the process, the leakage current of the TFT component is reduced to a preset leakage current interval, so that the problem of crosstalk caused by the increase of the leakage current of the TFT after the scanning line of the driving circuit is closed is solved, and the display effect of the display is improved.

Second embodiment:

as shown in fig. 2, fig. 2 is a detailed schematic diagram of a display adjusting circuit in the first embodiment of the present application, and the driving circuit 10 of the present application specifically includes:

a first driving module 11 and a second driving module 12; the first driving module 11 is connected with the second driving module 12. Wherein, the first driving module 11 comprises a plurality of driving switches; the second drive module 12 includes a plurality of reference drive switches. Each drive switch of the first drive module 11 has a corresponding reference drive switch in the second drive module 12. The drain of each drive switch is connected to the source of the corresponding reference drive switch.

Specifically, the first driving module 11 and the second driving module 12 are both field effect transistors, and an output end of the first driving module 11 is connected to an input end of the second driving module 12. In an embodiment, the input end of the first driving module 11 is connected to the display panel, and the display panel is driven by the first driving module 11 to display. The output of the second driver module 12 is connected to a monitoring circuit 20. The monitor circuit 20 is used for obtaining a leakage current of the display panel. When the leakage current of the display panel is not in the preset leakage current interval, the turn-off voltage compensation value is determined according to the leakage current of the display panel and the preset leakage current, and the turn-off voltage compensation value is fed back to the input end of the second driving module 12.

As shown in fig. 3, fig. 3 is a detailed schematic diagram of a display adjusting circuit according to a first embodiment of the present application. The grid electrode of each driving switch and the grid electrode of the corresponding reference driving switch are connected with the scanning line in the horizontal direction. The source electrode of each driving switch and the source electrode of the corresponding reference driving switch are connected with the data line in the vertical direction.

As shown in fig. 3, in an embodiment, the first driving module 11 includes a first driving switch 111, a second driving switch 112, and a third driving switch 113; the second driving module 12 includes a first reference driving switch 121, a second reference driving switch 122, and a third reference driving switch 123.

Specifically, the drain of the first driving switch 111 is connected to the source of the first reference driving switch 121. The gate of the first drive switch 111 is connected to a horizontal scanning line. The source of the first driving switch 111 is connected to a data line in the vertical direction.

The drain of the second driving switch 112 is connected to the source of the second reference driving switch 122. The gate of the second driving switch 112 is connected to a scanning line in the horizontal direction. The source of the second driving switch 112 is connected to the data line in the vertical direction.

The drain of the third driving switch 113 is connected to the source of the third reference driving switch 123. The gate of the third drive switch 113 is connected to a horizontal scanning line. The source of the third driving switch 113 is connected to the data line in the vertical direction.

Referring to fig. 3, each pixel on the array substrate has a driving switch, a scan line in a horizontal direction, and a data line in a vertical direction. All the pixels in the same row of the TFT-LCD have the grid electrodes of the driving switches connected together and connected to the scanning line; the sources of the two are connected together and connected to the data line; the respective drains are connected to the pixel electrodes of the pixels. The voltage applied by the scan line in the horizontal direction is the TFT on and off voltage for the pixels in the row. Taking the N-type TFT as an example, when the scanning line of the row outputs a high level, the TFTs of all the pixels of the row are turned on, and then the data line corresponding to the column where each pixel of the row is located outputs a corresponding display signal, so as to charge the corresponding pixel electrode to the voltage of the required display frame. After the charging is finished, the scanning line of the current row outputs a turn-off voltage, the TFT is turned off, and the pixel electrode of the current row keeps the charging voltage until the signal is rewritten next time. Thus, the scan lines are turned on line by line, charging the pixels of the entire screen.

In the technical solution of this embodiment, the display driving of the display panel is realized through the connection relationship.

The third embodiment:

as shown in fig. 4, fig. 4 is a detailed schematic diagram of a display adjusting circuit in the second embodiment of the present application. The present application places the second driving module 12 in the non-display area 40. Wherein the non-display area 40 is a Dummy area. The display area 30 is an AA display area.

Specifically, with reference to fig. 3 and fig. 4, the present application establishes a monitoring TFT leakage device and a feedback circuit in a display panel:

(1) a TFT device is newly built in Dummy row, and device 2 is named. The Dummy row is named as a component 1, signals of a Gate line (scanning line) and a Source line (Data line) at the end of a signal frame are respectively VGH signals and Data signals, the VGH signals and the Data signals need to be transmitted to the component 1, after the charging time is finished, a drain electrode of the component 1 provides Data voltage for a Source electrode of the component 2, and at the moment, the Gate line of the component 2 provides off-state VGL voltage to enable the component 2 to generate off-state voltage.

(2) The voltage is led out to the chip 50 through the feedback circuit to measure the voltage corresponding to the pixel leakage current on the display panel.

(2) Through new product design and process capability, relational data of TFT leakage current and VGL voltage (turn-off voltage) is established, and the data is set and written into the chip 50 as a basis for judging whether the detection leakage current is qualified or not.

(3) The chip 50 compares the leakage current transmitted in the monitoring surface with the set current to determine whether to adjust the VGL voltage, and the range of the adjustment, so that the VGL voltage is required to be adjusted and input into the display panel.

(4) VGL is adjusted before the ignition process is completed to the backlight illumination.

The fourth embodiment:

as shown in fig. 5, fig. 5 is a schematic diagram showing a second embodiment of the adjusting circuit. The monitoring circuit 20 of the present application further includes an adjustable resistor R2, a comparator T, a first switch S1, and a second switch S2. One end of the adjustable resistor is connected with the first input end of the comparator, and the other end of the adjustable resistor is grounded; a second input end of the comparator is connected with a grid electrode of the first driving module and one end of the first switch, and an output end of the comparator is connected with one end of the second switch; the other end of the first switch is connected with the other end of the second switch and the grid electrode of the second driving module.

Wherein, an adjustable resistor is arranged on the monitoring circuit. After the turn-off voltage corresponding to the leakage current of the display panel and the preset turn-off voltage corresponding to the preset leakage current are determined, the target resistance value of the adjustable resistor can be further determined according to the turn-off voltage corresponding to the leakage current of the display panel and the preset turn-off voltage of the preset leakage current. Specifically, referring to fig. 5, VIN is an off-voltage corresponding to the leakage current of the display panel, V_outAnd in order to preset the turn-off voltage corresponding to the leakage current, the leakage current of the display panel is positioned in a preset leakage current interval by adjusting the adjustable resistor. The functional relationship between the turn-off voltage corresponding to the leakage current of the display panel and the turn-off voltage corresponding to the preset leakage current is as follows: vout — VIN (R1/R2+1), where VIN, R1 are known. The preset turn-off voltage can be determined according to a preset leakage current table look-up, and the preset leakage current corresponding to the preset turn-off voltage is selected from a preset leakage current interval. The drain voltage of the display panel may be determined according to the actually measured drain current of the display panel. Therefore, the target resistance value (i.e., R2) of the adjustable resistor can be calculated as determined by the above functional relationship. After the target resistance value of the adjustable resistor is determined, the resistance value of the adjustable resistor is adjusted to the target resistance value, so that the leakage current of the display panel is located in a preset leakage current interval when the target resistance value is reached.

Fifth embodiment:

in one embodiment, each pixel on the array substrate has a drive switch. The driving circuit comprises a first driving module and a second driving module. The first driving module and the second driving module respectively comprise at least one driving switch, and each driving switch of the first driving module is connected with each driving switch of the second driving module. The process of adjusting the leakage current of the display panel to the preset leakage current interval by the turn-off voltage compensation value is substantially as follows:

and monitoring the leakage current of the display panel, if the turn-off voltage of the display panel needs to be adjusted, disconnecting the first switch and closing the second switch, and adjusting the resistance of the adjustable resistor to enable the resistance of the adjustable resistor to reach the target resistance. When the resistance of the adjustable resistor reaches the target resistance, the turn-off voltage of the display panel reaches the preset turn-off voltage, and the leakage current of the display panel is in the preset leakage current interval. The process is equivalent to adjusting the adjustable resistor through the turn-off voltage compensation value, namely, the turn-off voltage compensation value is superposed on the turn-off voltage corresponding to the leakage current of the display panel, so that the leakage current of the display panel is in a preset leakage current interval.

For example, referring to fig. 5, S1 in fig. 5 is a first switch, S2 is a second switch, and T is a processing module in the monitoring circuit, which is substantially a comparator, for determining whether the leakage current of the display panel is within a predetermined leakage current interval. And when the leakage current of the display panel is not in the preset leakage current interval, opening S1 and closing S2, and adjusting R2 so that the leakage current of the display panel is in the preset leakage current interval. The technical scheme of the embodiment is used for realizing the adjustment of the leakage current of the display panel.

The sixth embodiment:

in an embodiment, the leakage current of the display panel is monitored, and if the turn-off voltage of the display panel does not need to be adjusted, the first switch is closed and the second switch is opened, so that the leakage current of the display panel is obtained through the monitoring circuit. For example, referring to fig. 5, when the off-voltage of the display panel does not need to be adjusted, S1 is closed and S2 is opened.

Seventh embodiment:

in one embodiment, the samples of the leakage current and the turn-off voltage may be obtained during a development test phase. The monitoring circuit is further configured to obtain a turn-off voltage corresponding to each leakage current, use each leakage current and the turn-off voltage corresponding to the leakage current as a sample, and establish a corresponding mapping relationship between the two. The mapping relationship between the samples is stored in a display look-up table. Wherein the display look-up table is essentially a RAM. After data is written into RAM in advance, every time a signal is input, it is equal to inputting an address to make table look-up, finding out the content correspondent to the address, then outputting. According to the method and the device, the mapping relation among the samples is stored in the display lookup table, so that the turn-off voltage corresponding to the leakage current of the display panel can be searched in the display lookup table subsequently.

The display lookup table is used for displaying the off-state voltage of each display panel leakage current, and the display lookup table and the display panel leakage current have corresponding mapping relations. Therefore, a first mapping relation corresponding to the leakage current of the display panel can be searched in the display lookup table, and a corresponding first turn-off voltage is obtained based on the first mapping relation; the first turn-off voltage is a turn-off voltage value corresponding to a drain voltage of the display panel. The first mapping relation is a mapping relation between the leakage current of the display panel and the first turn-off voltage. Searching a second mapping relation corresponding to the preset leakage current of the display panel in a display lookup table based on the same searching mode, and acquiring a corresponding second turn-off voltage based on the second mapping relation; when the turn-off voltage compensation value is determined, the turn-off voltage compensation value can be determined only by calculating the difference value of the first turn-off voltage and the second turn-off voltage. According to the technical scheme, the turn-off voltage compensation value is determined, and the driving circuit is further adjusted through the turn-off voltage compensation value.

Based on the same conception, the application provides a display device, and the display device of the application comprises: a color film substrate;

the display device comprises an array substrate, a display control circuit and a control circuit, wherein the array substrate comprises a display area and a non-display area, and the display control circuit is arranged in the non-display area; wherein, the non-display area is a Dummy area, and the display area is an AA display area. The non-display area comprises a first driving module and a second driving module.

And the liquid crystal layer is arranged between the color film substrate and the array substrate. The specific structure of the display adjusting circuit refers to the above embodiments, and since the display device adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and are not described in detail herein.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The application can be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the present application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A display adjustment circuit, comprising:

2. The display adjustment circuit according to claim 1, wherein the drive circuit comprises:

the device comprises a first driving module and a second driving module; the first driving module comprises a plurality of driving switches; the second driving module comprises a plurality of reference driving switches, and each driving switch is provided with a corresponding reference driving switch; the first driving module is connected with the second driving module and comprises:

3. The display conditioning circuit of claim 2, wherein the first drive module includes a first drive switch, a second drive switch, and a third drive switch; the second driving module comprises a first reference driving switch, a second reference driving switch and a third reference driving switch; the connection between the drain of each driving switch and the source of the corresponding reference driving switch comprises:

and the drain electrode of the third driving switch is connected with the source electrode of the third reference driving switch.

4. The display adjustment circuit according to claim 3, wherein a gate of each of the driving switches and a gate of the corresponding reference driving switch are connected to a scanning line in a horizontal direction, and a source of each of the driving switches and a source of the corresponding reference driving switch are connected to a data line in a vertical direction.

5. The display conditioning circuit of claim 2, wherein the second driving module is disposed in a non-display area.

6. The display conditioning circuit of claim 2, wherein the monitoring circuit further comprises: the circuit comprises an adjustable resistor, a comparator, a first switch and a second switch; one end of the adjustable resistor is connected with the first input end of the comparator, and the other end of the adjustable resistor is grounded; a second input end of the comparator is connected with a grid electrode of the first driving module and one end of the first switch, and an output end of the comparator is connected with one end of the second switch; the other end of the first switch is connected with the other end of the second switch and the grid electrode of the second driving module;

7. The display adjustment circuit of claim 6, wherein when the first switch is turned off and the second switch is turned off, the adjustable resistor is configured to adjust the adjustable resistor based on the off-voltage compensation value to adjust the leakage current of the display panel to the predetermined leakage current interval.

8. The display conditioning circuit of claim 6, wherein the first switch is closed and the second switch is open when the monitor circuit obtains a leakage current of the display panel.

9. The display conditioning circuit of claim 1, wherein the monitor circuit is further configured to establish a mapping between samples of leakage current of the display panel and samples of off-voltage of the drive circuit; generating a display lookup table according to the mapping relation between the samples of the leakage current and the samples of the turn-off voltage;

10. A display device, characterized in that the display device comprises:

a color film substrate;

an array substrate, the array substrate comprising a display area and a non-display area, the driving circuit included in the display adjusting circuit according to any one of claims 1 to 9 being disposed in the non-display area;

and the liquid crystal layer is arranged between the color film substrate and the array substrate.