WO2019056601A1

WO2019056601A1 - Liquid crystal display and drive method therefor

Info

Publication number: WO2019056601A1
Application number: PCT/CN2017/116272
Authority: WO
Inventors: 单剑锋
Original assignee: 惠科股份有限公司
Priority date: 2017-09-19
Filing date: 2017-12-14
Publication date: 2019-03-28
Also published as: CN107665679A

Abstract

The embodiments of the present application relate to a liquid crystal display and a drive method therefor. The liquid crystal display comprises an input logic device, a memory, a determination device and a driver, wherein the input logic device is used for inputting a video signal from a host; the memory is used for storing a previous brightness level of the video signal input by the input logic device; the determination device is used for determining, according to the change in the video signal and the next video signal thereof, whether the signals are in a change state, and superposing, by means of corresponding to the change state, a compensation signal onto the next video signal to determine an output brightness level; and the driver drives, based on the output brightness level determined by the determination device, each pixel of an image of each frame to move to a liquid crystal unit for displaying the image.

Description

Liquid crystal display and driving method thereof

[0001] Embodiments of the present application relate to a liquid crystal display and a driving method thereof, and more particularly to a liquid crystal display and a driving method thereof for compensating a video signal in a varying state by superimposing a compensation signal. Background technique

[0002] In recent years, in addition to cathode ray tube (CRT) displays, liquid crystal displays (LCDs) have been widely used as displays for image displays and personal computers (PCs) and televisions. LCDs are smaller and lighter than CRT monitors. There are also many improvements to the display performance of LCDs, including low geometric distortion and high image quality. Therefore, liquid crystal displays will be the focus of mainstream display devices used in future video devices.

[0003] However, due to the poor response characteristics of the liquid crystal itself, the LCD has a potential problem in response to the inter-turn difference. That is, in displays used in the industry, the display is refreshed at a frame rate of 60 frames per second or every (1 ÷ 60 =) 16.7 milliseconds. On the other hand, the response time of the current LCD from black to white is 10 to 50 ms, usually 20 to 30 ms. This means that one frame in the display is shorter than the response time of most liquid crystals. As a result, problems such as visual persistence of moving images caused by response delay of the LCD and problems of not being able to keep up with fast moving images become apparent.

technical problem

In view of the above problems in the prior art, the technical problem to be solved by the embodiments of the present application is to provide a liquid crystal display and a driving method thereof to effectively improve the problem of response delay.

Problem solution

Technical solution

[0005] Based on the technical problem to be solved, the following embodiments of the present application provide the following technical solutions: A liquid crystal display device includes:

[0006] an input logic, configured to input a video signal from a host;

[0007] a memory, configured to store a previous brightness level of the video signal input by the input logic; [0008] a determiner, configured to determine whether the video signal and a change of the next video signal are Changing a state, and superimposing a compensation signal corresponding to the fluctuation state to the next video signal to determine an output Brightness level;

And a driver that drives each pixel of the image of each frame to the liquid crystal cell displaying the image based on the output brightness level determined by the determiner.

[0010] Optionally, the determiner includes a lookup table, where the lookup table stores a brightness level of the liquid crystal unit determined according to the previous brightness level and the next brightness level, and is determined according to The brightness level read by the lookup table determines whether it is a changed state.

[0011] Optionally, the liquid crystal display further includes a generator for superimposing the compensation signal on the next video signal to generate an output video signal having the output brightness level.

[0012] Optionally, the liquid crystal display further includes an output logic for outputting the output video signal having the output brightness level to the driver.

[0013] In another aspect, the present application further provides a driving method of a liquid crystal display, which is applicable to a liquid crystal display including an input logic, a memory, a determiner, and a driver, and the driving method of the liquid crystal display includes the following steps:

[0014] inputting a video signal from a host;

[0015] storing a previous brightness level of the input video signal;

[0016] determining whether the state is a change state according to the change of the video signal and the next video signal thereof;

[0017] superimposing a compensation signal on the next video signal corresponding to the fluctuation state to determine an output brightness level;

[0018] driving each pixel of the image of each frame to the liquid crystal unit of the display image based on the determined output brightness level.

[0019] Optionally, the determiner includes a lookup table, and the driving method of the liquid crystal display further includes the following steps: [0020] storing the liquid crystal determined corresponding to the previous brightness level and the next brightness level The brightness level of the unit;

[0021] determining whether the state is a change state according to the brightness level corresponding to the previous brightness level and the next brightness level.

[0022] Optionally, the driving method further includes the following steps:

And [0023] superimposing the compensation signal on the next video signal by a generator of the liquid crystal display to generate an output video signal having the output brightness level. [0024] Optionally, the driving method further includes the following steps:

[0025] outputting the output video signal having the output brightness level to the driver through an output logic of the liquid crystal display.

In another aspect, the embodiment of the present application further provides a liquid crystal display, including:

[0027] an input logic, configured to input a video signal from the host;

[0028] a memory, configured to store a previous brightness level of the video signal input by the input logic; [0029] a determiner configured to determine whether the video signal and a change of the next video signal are And changing the state, and superimposing the compensation signal corresponding to the fluctuation state to the next video signal to determine an output brightness level;

[0030] a driver, driving each pixel of the image of each frame to a liquid crystal cell displaying the image based on the output brightness level determined by the determiner;

[0031] a generator for superimposing the compensation signal on the next video signal to generate an output video signal having the output brightness level;

[0032] an output logic, configured to output the output video signal having the output brightness level to the driver;

[0033] wherein the determiner includes a lookup table, where the lookup table stores a brightness level of the liquid crystal unit determined according to the previous brightness level and the next brightness level, and according to The brightness level read by the lookup table determines whether the brightness level is a changed state.

Advantageous effects of the invention

Beneficial effect

[0034] By adopting the above technical solution, the liquid crystal display and the driving method thereof provided by the embodiments of the present application compensate the video signal in a varying state by superimposing the compensation signal, thereby effectively improving the problem of response delay.

Brief description of the drawing

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS [0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are some embodiments of the present application. For those skilled in the art, under the premise of not doing creative work, These figures take additional drawings.

1 is a schematic block diagram of an embodiment of a liquid crystal display of the present application.

2 is a schematic diagram of compensation signals and luminances of an embodiment of a liquid crystal display of the present application.

3 is a schematic block diagram of another embodiment of a liquid crystal display of the present application.

4 is a flow chart of one embodiment of a driving method of a liquid crystal display of the present application.

5 is a flow chart of another embodiment of a driving method of a liquid crystal display of the present application.

6 is a flow chart of still another embodiment of a driving method of a liquid crystal display of the present application.

7 is a schematic block diagram of still another embodiment of a liquid crystal display of the present application.

8 is a flow chart of still another embodiment of a driving method of a liquid crystal display of the present application.

Embodiments of the invention

[0044] The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present application. It is apparent that the described embodiments are part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application, without departing from the inventive work, are within the scope of the present application.

1 is a schematic block diagram of an embodiment of a liquid crystal display of the present application; and FIG. 2 is a schematic diagram of compensation signals and brightness of the liquid crystal display of the present application. As shown in FIG. 1 and FIG. 2, the liquid crystal display 100 of the present application includes: an input logic unit 110, a memory 120, a determiner 130, and a driver 140. The input logic 110 is connected to the memory 120, the memory 120 is connected to the determiner 130, and the determiner 130 is connected to the driver 140.

[0046] wherein the above mentioned input logic 110 is used to input a video signal from a host. The memory 120 is used to store the previous brightness level of the video signal input by the input logic 110. The determiner 130 is configured to determine whether to superimpose the compensation signal based on the previous brightness level stored in the memory 120 and the next brightness level of the next video signal input to the input logic 110 (such as the Dcp field Dcp2 in FIG. 2). ) to the next video signal (as in Figure 2, D) to determine the output brightness level. The driver 140 is configured to drive each pixel of the image of the video signal of each frame to the liquid crystal cell of the display image based on the output luminance level determined by the determiner 130. Among them, the compensation signal can be set in the front high and low mode, the front high part can accelerate the pull-up brightness, and the same as the increase of the voltage, it is easier to achieve the ideal brightness; the lower part can accelerate the decrease of the brightness , reduce interference to the next video signal. The waveform of the compensation signal can also have different shapes, such as a curved shape, a stepped shape, and the like.

[0047] The determiner 130 of the present application may include a lookup table that stores the liquid crystal cell brightness level determined corresponding to the previous brightness level and the next brightness level, and according to the brightness level read by the lookup table. Determine whether to superimpose the compensation signal. In one embodiment, the lookup table can be as shown in Table 1 below.

[0048] Table 1

[]

[0049] As shown in Table 1 above, taking the previous brightness level as 0 and the next brightness level as 90 as an example, the brightness level of the corresponding liquid crystal unit can be read from the lookup table to be 98, and the next brightness bit can be known. The brightness level of the corresponding liquid crystal unit is not enough, and then the determiner 130 determines that the compensation signal must be superimposed on the next video signal so that the brightness level of the next video signal can satisfy the brightness level of the liquid crystal unit.

[0050] On the contrary, the following one brightness level is 100, and the corresponding liquid crystal unit brightness level is 100, that is, the next brightness level satisfies the liquid crystal unit brightness level, so the determiner 130 determines that it is not necessary to The video signal is superimposed with a compensation signal.

Please refer to FIG. 3, which is a schematic block diagram of another embodiment of the liquid crystal display of the present application. As shown in FIG. 3, the liquid crystal display 100 can further include a generator 150 coupled to the determiner 130 for superimposing the compensation signal on the next video signal to produce an output video signal having the output brightness level. In another embodiment, the liquid crystal display 100 may further include an output logic 160 connected to the generator 150 and the drive The actuator 140 is configured to output an output video signal having the output brightness level to the driver 140.

[0052] Although the foregoing description of the driving method of the liquid crystal display of the present application has been simultaneously described in the description of the liquid crystal display of the present application, for the sake of clarity, a detailed description of the flowchart will be further described below.

Please refer to FIG. 4 , which is a flowchart of an embodiment of a driving method of a liquid crystal display of the present application. As shown in FIG. 4, the driving method of the liquid crystal display of the present application is applicable to a liquid crystal display including an input logic, a memory, a determiner and a driver, and includes the following steps:

[0054] Step S41: input a video signal from the host;

[0055] Step S42: storing a previous brightness level of the input video signal;

[0056] Step S43: determining whether to superimpose the compensation signal onto the next video signal based on the previous brightness level and the next brightness level of the next video signal to determine the output brightness level.

[0057] In step S44: driving each pixel of the image of each frame to the liquid crystal cell of the display image based on the determined output brightness level.

[0058] As described above, the determiner may further include a lookup table. Therefore, the driving method of the liquid crystal display may further include the following steps:

[0059] storing a brightness level of the liquid crystal cell determined corresponding to the previous brightness level and the next brightness level; [0060] determining whether to superimpose the compensation signal according to the brightness level corresponding to the previous brightness level and the next brightness level.

[0061] In addition, in an embodiment, the driving method of the liquid crystal display may further include the following steps: [0062] superimposing a compensation signal to a next video signal by a generator of the liquid crystal display to generate the output brightness Level output video signal.

[0063] In another embodiment, the driving method of the liquid crystal display may further include the following steps: [0064] outputting an output video signal having the output brightness level to a driver through an output logic of the liquid crystal display .

[0065] The embodiment of the present application further provides a liquid crystal display, including:

[0066] an input logic, configured to input a video signal from the host;

[0067] a memory for storing a previous brightness level of the video signal input by the input logic; [0068] a determiner, based on the previous brightness level and input to the memory stored in the memory Determining whether to superimpose the compensation signal on the next video signal to determine the output brightness level; [0069] a driver, driving each pixel of an image of each frame to a liquid crystal cell displaying the image based on the output brightness level determined by the determiner;

a generator for superimposing the compensation signal on the next video signal to generate an output video signal having the output brightness level;

[0071] an output logic, configured to output the output video signal having the output brightness level to the driver;

[0072] wherein the determiner includes a lookup table, where the lookup table stores a brightness level of the liquid crystal unit determined according to the previous brightness level and the next brightness level, and according to The brightness level read by the lookup table determines whether the compensation signal is superimposed.

[0073] In addition, the embodiment of the present application also provides a driving method for a liquid crystal display, which is applicable to a liquid crystal display including an input logic, a memory, a determiner, a driver, a generator, and an output logic, and includes the following steps:

[0074] inputting a video signal from a host;

[0075] storing a previous brightness level of the input video signal;

[0076] determining whether to superimpose the compensation signal on the next video signal based on the previous brightness level and the next brightness level of the next video signal to determine an output brightness level;

[0077] superimposing the compensation signal on the next video signal to generate an output video signal having the output brightness level;

Outputting the output video signal having the output brightness level to the driver;

[0079] driving each pixel of the image of each frame to the liquid crystal cell displaying the image based on the determined output brightness level;

[0080] wherein the determiner includes a lookup table, and the driving method of the liquid crystal display further includes the following steps: [0081] storing the liquid crystal determined corresponding to the previous brightness level and the next brightness level The brightness level of the unit;

[0082] determining whether to superimpose the compensation signal according to the brightness level corresponding to the previous brightness level and the next brightness level.

Referring to FIG. 1 again, in another embodiment of the present application, the liquid crystal display 100 of the present application includes an input logic 110, a memory 120, a determiner 130, and a driver 140. Wherein, the input logic 110 is connected to the memory 120. The memory 120 is connected to the determiner 130, and the determiner 130 is connected to the driver 140.

[0084] wherein the above mentioned input logic 110 is used to input a video signal from a host. The memory 120 is used to store the previous brightness level of the video signal input by the input logic 110. The determiner 130 determines whether the state is a change state according to the change of the video signal and the next video signal, and superimposes the compensation signal (such as Dcpl or Dcp2 in FIG. 2) to the next video signal corresponding to the change state (as shown in FIG. 2). On, to determine the output brightness level. The driver 140 is configured to drive each pixel of the image of the video signal of each frame to the liquid crystal cell of the display image based on the output luminance level determined by the determiner 130. Among them, the compensation signal can be set in the front high and low mode, the front high part can accelerate the pull-up brightness, and the same as the voltage increase, it is easier to achieve the ideal brightness; the lower part can accelerate the brightness reduction, reduce the next one Interference from video signals. The waveform of the compensation signal can also have different shapes, such as a curved shape, a stepped shape, and the like.

[0041] As shown in the foregoing Table 1, the determiner 130 of the present application may include a lookup table, where the lookup table stores the brightness level of the liquid crystal unit determined according to the previous brightness level and the next brightness level, and is determined according to The brightness level read by the lookup table determines whether it is a changed state. Taking the previous brightness level as 0 and the next brightness level as 90 as an example, the corresponding liquid crystal cell brightness level can be read from the lookup table to be 98, and the next brightness level is less than the corresponding liquid crystal cell brightness level. Then, the determiner 130 judges that it is in a changing state, and must superimpose the compensation signal on the next video signal.

[0086] On the contrary, the following one brightness level is 100, and the corresponding liquid crystal unit brightness level is 100, that is, the next brightness level satisfies the liquid crystal unit brightness level, so the determiner 130 determines its non-variation state. Therefore, it is not necessary to superimpose the compensation signal on the next video signal.

As shown in FIG. 3, the liquid crystal display 100 may further include a generator 150 coupled to the determiner 130 for superimposing the compensation signal on the next video signal to generate an output video signal having the output brightness level. . Next, the liquid crystal display 100 may further include an output logic 160 connected to the generator 150 and the driver 140 for outputting an output video signal having the output luminance level to the driver 140.

Please refer to FIG. 5 , which is a flowchart of another embodiment of a driving method of a liquid crystal display of the present application. As shown in FIG. 5, the driving method of the liquid crystal display provided by the embodiment of the present application is applicable to a liquid crystal display including an input logic, a memory, a determiner, and a driver, and includes the following steps:

[0089] Step S51: input a video signal from the host;

[0090] Step S52: storing a previous brightness level of the input video signal; [0091] Step S53: determining whether the state is a change state according to the change of the video signal and the next video signal thereof; [0092] Step S54: superimposing the compensation signal on the next video signal corresponding to the change state to determine the output brightness level;

[0093] Step S55: Driving each pixel of the image of each frame to the liquid crystal cell displaying the image based on the determined output brightness level.

[0094] As described above, the determiner may further include a lookup table, and therefore, the driving method of the liquid crystal display further includes the following steps:

[0095] storing a brightness level of the liquid crystal cell determined corresponding to the previous brightness level and the next brightness level; [0096] determining whether the state is a change state according to a brightness level corresponding to the previous brightness level and the next brightness level.

[0097] In addition, in an embodiment, the driving method of the liquid crystal display may further include the following steps: [0098] superimposing a compensation signal to a next video signal by a generator of the liquid crystal display to generate the output brightness Level output video signal.

[0099] In another embodiment, the driving method of the liquid crystal display further includes the following steps:

[0100] The output video signal having the output luminance level is output to the driver through an output logic of the liquid crystal display.

[0101] The embodiment of the present application further provides a liquid crystal display, including:

[0102] input logic, inputting a video signal from the host;

[0103] a memory storing a previous brightness level of the video signal input by the input logic;

[0104] determining, according to the change of the video signal and the next video signal, determining whether the state is a fluctuation state, and superimposing the compensation signal on the next video signal corresponding to the fluctuation state to determine an output brightness level;

[0105] a driver, driving each pixel of an image of each frame to a liquid crystal cell displaying the image based on the output brightness level determined by the determiner;

[0106] a generator, configured to superimpose the compensation signal on the next video signal to generate an output video signal having the output brightness level;

[0107] an output logic, configured to output the output video signal having the output brightness level to the driver;

[0108] wherein the determiner includes a lookup table, and the lookup table stores the previous brightness level and the location Determining a brightness level of the liquid crystal cell determined by a brightness level, and determining whether the state is a change state according to the brightness level read by the lookup table.

[0109] In addition, another embodiment of the present application further provides a driving method of a liquid crystal display, which is applicable to a liquid crystal display including an input logic, a memory, a determiner, a driver, a generator, and an output logic, and includes the following steps. :

[0110] inputting a video signal from a host;

[0111] storing a previous brightness level of the input video signal;

[0112] determining whether the state is a change state according to the change of the video signal and the next video signal thereof;

[0113] superimposing the compensation signal on the next video signal to generate an output video signal having the output brightness level;

Outputting the output video signal having the output luminance level to the driver;

[0115] driving each pixel of the image of each frame to the liquid crystal cell displaying the image based on the determined output brightness level;

[0116] wherein the determiner includes a lookup table, and the driving method of the liquid crystal display further includes the following steps: [0117] storing the liquid crystal determined corresponding to the previous brightness level and the next brightness level The brightness level of the unit;

[0118] determining whether the state is a change state according to the brightness level corresponding to the previous brightness level and the next brightness level.

[0119] Referring again to FIG. 1, in another embodiment of the present application, the liquid crystal display 100 of the present application includes an input logic 110, a memory 120, a determiner 130, and a driver 140. The input logic 110 is connected to the memory 120, the memory 120 is connected to the determiner 130, and the determiner 130 is connected to the driver 140.

[0120] wherein the above mentioned input logic 110 is used to input a video signal from a host. The memory 120 is used to store the previous brightness level of the video signal input by the input logic unit 110 and a number of conditional expressions.

[0121] The determiner 130 substitutes the previous brightness level stored in the memory 120 and the next brightness level of the next video signal input to the input logic 110 into the corresponding conditional expression to determine the output brightness level. . The driver 140 is configured to drive each pixel of the image of the video signal of each frame to the liquid crystal cell of the display image based on the output luminance level determined by the determiner 130.

[0122] wherein, B i can be the previous brightness level, B _i+1 is the next brightness level, and several conditions are as follows Shown as follows:

[0123] B _i+1 =0, then offset=0

[0124] B _i+1 =10 and Bi=0, then the offset = 18

[0125] B _i+1 =10 and Bi=10~90, then offset=0

[0126] B _i+1 =10 and BFIOO, then offset = -8

[0127] B _i+1 =20 and BF0, then offset = 28

[0128] B _i+1 =20 and BFIO, then offset = 10

[0129] B _i+1 =20 and Bi=20~90, then offset=0

[0130] 8 _{; +1} = 20 and = 100, then the offset = -16

[0131] B _i+1 =30 and Bi=0, then the offset = 33

[0132] B _i+1 =30 and Bi=10, then the offset = 15

[0133] B _i+1 =30 and Bi=20, then the offset = 5

[0134] B ₁₊₁ =30 and B i=30~80, then offset=0

[0135] B _i+1 =30 and Bi=90, then the offset = -5

[0136] B ₁₊₁ =30 and Bi=100, then the offset = -23

[0137] B _i+1 =40 and Bi=0, then the offset = 34

[0138] B _i+1 =40 and Bi=10, then the offset = 16

[0139] B _i+1 =40 and Bi=20, then the offset = 6

[0140] B _i+1 =40 and Bi=30, then offset = 1

[0141] B _i+1 =40 and Bi=40~80, then offset=0

[0142] B _i+1 =40 and Bi=90, then the offset = -10

8 _{; +1} = 40 and = 100, then the offset = -28

[0144] B _i+1 =50 and Bi=0, then the offset = 33

[0145] B _I+1 = 50 and BFIO, then offset = 15

[0146] B _i+1 =50 and Bi=20, then the offset = 5

[0147] B _i+1 =50 and B _; =30~70, then offset=0

[0148] B _i+1 =50 and Bi=80, then the offset = -5

[0149] B ₁₊₁ =50 and Bi=90, then the offset = -15 [0150] 8 _{; +1} = 50 and = 100, then the offset = -33

[0151] B _i+ ,=60 and Bi=0, then the offset=28

[0152] B ₁₊₁ =60 and Bi=10, then the offset = 10

[0153] B _i+1 =60 and Bi=20~60, then offset=0

[0154] B _i+1 =60 and Bi=70, then the offset = -1

[0155] B ₁₊₁ =60^.B ₁₌ 80, then offset = -6

[0156] B _i+1 =60 and Bi=90, then the offset =-16

[0157] B _i+1 =60 and BFIOO, then offset = -34

[0158] B _I+1 =70 and BFO, then offset = 23

[0159] 8 ₁₊₁ =70 and 8 _; =10, then the offset = 5

[0160] B _i+1 =70 and Bi=20~70, then offset=0

[0161] B _i+1 =70 and Bi=80, then the offset = -5

[0162] B _i+1 =70 and B _; =90, then the offset = -15

[0163] B ₁₊₁ =70 and Bi=100, then the offset = -32

[0164] B _i+1 =80 and Bi=0, then the offset = 16

[0165] B _i+1 =80 and Bi=10~80, then offset=0

[0166] 8 ₁₊₁ = 80 and 8 ₁ = 90, then the offset = -10

[0167] B _I+1 = 80 and BFIOO, then offset = -28

[0168] B _i+1 =90 and Bi=0, then the offset = 8

[0169] B _i+1 =90 and Bi=10~90, then offset=0

[0170] B ₁₊₁ =90 and Bi=100, then the offset = -18

[0171] B _i+1 =100, then offset=0

[0172] As described above, the determiner 130 substitutes the previous brightness level and the next brightness level to the corresponding conditional expression.

, take the offset, and add the offset to the next brightness level.

[0173] As shown in FIG. 3, the liquid crystal display 100 may further include a generator 150 coupled to the determiner 130 for adding an offset to the next video signal to generate an output video having the output brightness level. signal. Next, the liquid crystal display 100 may further include an output logic 160 connected to the generator 150 and the driver 140 for outputting the output video signal having the output brightness level to the driver 140. [0174] Please refer to FIG. 6, which is a flowchart of still another embodiment of a driving method of a liquid crystal display of the present application. As shown in FIG. 6, the driving method of the liquid crystal display of the present application is applicable to a liquid crystal display including an input logic, a memory, a determiner, and a driver, and includes the following steps:

[0175] Step S61: input a video signal from the host;

[0176] Step S62: storing a previous brightness level of the input video signal and a plurality of conditional expressions;

[0177] Step S63: Substituting the previous brightness level and the next brightness level of the next video signal into a corresponding condition to determine an output brightness level;

[0178] Step S64: Driving each pixel of the image of each frame to the liquid crystal cell displaying the image based on the determined output brightness level.

[0179] As described above, in one embodiment, the driving method of the liquid crystal display further includes the following steps: [0180] obtaining a bias by substituting the previous brightness level and the next brightness level to the corresponding conditional expression Shift; [0181] Add offset to the next luminance level.

[0182] In addition, in one embodiment, the driving method of the liquid crystal display may further include the following steps: [0183] adding an offset to the next video signal by a generator of the liquid crystal display to generate the Outputs a brightness level output video signal.

[0184] In another embodiment, the driving method of the liquid crystal display may further include the following steps:

[0185] The output video signal having the output luminance level is output to the driver through an output logic of the liquid crystal display.

[0186] In another embodiment, an embodiment of the present application further provides a liquid crystal display, including: an input logic, inputting a video signal from a host;

[0187] a memory storing a previous brightness level of the video signal input by the input logic and a plurality of conditional expressions;

[0188] a determiner that substitutes the previous brightness level stored in the memory and a next brightness level of a next video signal input to the input logic into the corresponding conditional expression to determine Output brightness level;

[0189] a driver, driving each pixel of an image of each frame to a liquid crystal cell displaying the image based on the output brightness level determined by the determiner;

[0190] a generator, configured to superimpose the compensation signal on the next video signal to generate the An output video signal having a brightness level;

[0191] an output logic, configured to output the output video signal having the output brightness level to the driver;

[0192] wherein the determiner substitutes the previous brightness level and the next brightness level to the corresponding conditional expression, obtains an offset, and adds the offset to the lower A brightness level.

[0193] In addition, another embodiment of the present application further provides a driving method of a liquid crystal display, which is applicable to a liquid crystal display including an input logic, a memory, a determiner, a driver, a generator, and an output logic, and includes the following steps. :

[0194] inputting a video signal from a host;

[0195] storing a previous brightness level of the input video signal and a plurality of conditional expressions;

[0196] substituting the previous brightness level and the next brightness level of the next video signal into the corresponding conditional expression to determine an output brightness level;

[0197] superimposing the compensation signal on the next video signal to generate an output video signal having the output brightness level;

[0198] outputting the output video signal having the output luminance level to the driver;

[0199] driving each pixel of the image of each frame to the liquid crystal cell displaying the image based on the determined output brightness level;

[0200] wherein the driving method of the liquid crystal display further comprises the steps of: obtaining an offset by substituting the previous brightness level and the next brightness level to the corresponding conditional expression;

[0201] adding the offset to the next brightness level.

Please refer to FIG. 7, which is a schematic block diagram of still another embodiment of the liquid crystal display of the present application. As shown in FIG. 7, in another embodiment of the present application, the liquid crystal display 100 of the present application includes: an input logic 110, a memory 120, a photo sensor 170, and an integrator 180. The input logic unit 110 is connected to the storage unit 120, and the integrator 180 is connected to the input logic unit 110, the memory 120 and the light sensor 170.

[0203] wherein the input logic device 110 mentioned above is used to input a video signal from the host, and the video signal is maintained in an on state. The memory 120 is used to store the quiescent state brightness level. The light sensor 170 is configured to sense the brightness of the video signal to generate a light sensing signal. The integrator 180 is configured to integrate the received light sensing signal, and close the video signal corresponding to the integration result of the static state brightness level, and make the video signal The number changes to the off state. The integrator 180 can transmit a shutdown signal to the input logic 110 to change the video signal to the off state.

[0204] Optionally, the memory 120 stores a brightness level of the video signal. Therefore, the integrator 170 can know the integration result of the brightness level corresponding to the stationary state according to the brightness level of the stationary state and the brightness level of the video signal.

[0205] Importantly, the integrator 180 includes a lookup table that includes luminance levels of a plurality of video signals and their corresponding quiescent state luminance levels, and the integrator 180 obtains the luminance level from the relationship table according to the luminance level of the video signal. Corresponding quiescent state brightness level.

[0206] As shown in FIG. 7, the liquid crystal display 100 may further include a driver 140 connected to the input logic 110 for driving each pixel of the video signal per frame to a liquid crystal cell that displays an image.

Please refer to FIG. 8, which is a flowchart of still another embodiment of a driving method of a liquid crystal display of the present application. As shown in FIG. 8, the driving method of the liquid crystal display of the present application is applicable to a liquid crystal display including an input logic, a memory, a photo sensor, and an integrator, which includes the following steps:

[0208] Step S81: input a video signal from the host, and the video signal maintains an on state;

[0209] Step S82: storing a static state brightness level;

[0210] Step S83: sensing a brightness of the video signal to generate a light sensing signal;

[0211] Step S84: Integrating the light sensing signal to close the video signal corresponding to the integration result satisfying the static state brightness level.

[0212] wherein the memory is used to store a brightness level of the video signal.

[0213] As described above, the integrator includes a lookup table, and the driving method of the liquid crystal display further includes the following steps: [0214] storing brightness levels of the plurality of video signals and corresponding corresponding static state brightness levels in the relationship table [0215] The corresponding static state brightness level is obtained from the relationship table according to the brightness level of the video signal.

[0216] Furthermore, in another embodiment, the driving method of the liquid crystal display further comprises the following steps: [0217] Each pixel of each frame of the video signal is driven to a liquid crystal cell that displays an image by a driver of the liquid crystal display.

[0218] Another embodiment of the present application further provides a liquid crystal display, including:

[0219] input logic, inputting a video signal from the host, and maintaining the video signal in an on state;

[0220] a memory storing a static state brightness level, wherein the memory stores a brightness level of the video signal; [0221] a light sensor that senses brightness of the video signal to generate a light sensing signal;

[0222] an integrator, integrating the optical sensing signal, and closing the video signal corresponding to an integration result satisfying the static state brightness level, wherein the integrator includes a relationship table, and the relationship table includes a plurality of the video signals And a corresponding brightness level of the quiescent state, wherein the integrator obtains the corresponding quiescent state brightness level from the relationship table according to the brightness level of the video signal; and [ A switch is configured to drive each pixel of the video signal per frame to a liquid crystal cell that displays an image.

[0224] In addition, another embodiment of the present application further provides a driving method for a liquid crystal display, which is applicable to a liquid crystal display including an input logic, a memory, a photo sensor, an integrator, and a driver, and includes the following steps:

[0225] inputting a video signal from a host, and the video signal maintains an on state;

[0226] storing a static state brightness level and a brightness level of the video signal;

[0227] sensing a brightness of the video signal to generate a light sensing signal; storing brightness levels of the plurality of the video signals and corresponding corresponding static state brightness levels in the relationship table;

[0228] obtaining the corresponding static state brightness level from the relationship table according to the brightness level of the video signal;

[0229] integrating the optical sensing signal, and closing the video signal corresponding to an integration result satisfying the static state brightness level;

[0230] Each pixel of the video signal per frame is driven to a liquid crystal cell that displays an image by a driver of the liquid crystal display.

[0231] According to the above, the liquid crystal display of the present application and the driving method thereof compensate the video signal by superimposing a compensation signal or the like to improve the problem of response delay.

[0232] It should be noted that, in the embodiments, the descriptions of the various embodiments are different, and the parts that are not described in detail in an embodiment may refer to related descriptions of other embodiments.

The above description is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think of various kinds within the technical scope disclosed by the present application. Equivalent modifications or substitutions are intended to be included within the scope of the present application. therefore

The scope of protection of this application shall be subject to the scope of protection of the claims.

Claims

Claim

[Claim 1] A liquid crystal display, comprising:

Input logic for inputting a video signal from the host;

a memory, configured to store a previous brightness level of the video signal input by the input logic;

a determiner, configured to determine, according to the change of the video signal and the next video signal, whether the state is a change state, and superimpose the compensation signal on the next video signal corresponding to the change state to determine an output brightness level;

The driver drives each pixel of the image of each frame to the liquid crystal cell displaying the image based on the output brightness level determined by the determiner.

[Claim 2] The liquid crystal display according to claim 1, wherein the determiner includes a lookup table, and the lookup table stores the determination corresponding to the previous brightness level and the next brightness level. The brightness level of the liquid crystal cell is determined according to the brightness level read by the lookup table.

[Claim 3] The liquid crystal display according to claim 2, wherein the liquid crystal display further comprises a generator for superimposing the compensation signal on the next video signal to generate the output Output video signal with brightness level.

[Claim 4] The liquid crystal display according to claim 2, wherein the liquid crystal display further comprises an output logic for outputting an output video signal having the output luminance level to the driver.

[Claim 5] The liquid crystal display according to claim 1, wherein the liquid crystal display further comprises a generator for superimposing the compensation signal on the next video signal to generate the output Output video signal with brightness level.

[Claim 6] The liquid crystal display according to claim 5, wherein the liquid crystal display further comprises output logic for outputting the output video signal having the output brightness level to the driver .

[Claim 7] The liquid crystal display according to claim 1, wherein the liquid crystal display further comprises output logic for outputting an output video signal having the output brightness level to The driver.

A liquid crystal display driving method is applicable to a liquid crystal display including an input logic, a memory, a determiner and a driver, and is characterized in that the method comprises the following steps:

Input a video signal from the host;

Storing a previous brightness level of the input video signal;

Determining whether the state is a change state according to the change of the video signal and the next video signal; and superimposing the compensation signal on the next video signal corresponding to the fluctuation state to determine an output brightness level;

Each pixel of the image of each frame is driven to the liquid crystal cell displaying the image based on the determined output brightness level.

The driving method of a liquid crystal display according to claim 8, wherein the determiner comprises a lookup table, and the driving method of the liquid crystal display further comprises the steps of: storing corresponding previous brightness levels and the next one a brightness level of the liquid crystal cell determined by a brightness level;

Whether the state of the fluctuation is determined according to the brightness level corresponding to the previous brightness level and the next brightness level.

The driving method of a liquid crystal display according to claim 9, wherein the driving method further comprises the following steps:

The compensation signal is superimposed to the next video signal by a generator of the liquid crystal display to produce an output video signal having the output brightness level.

An output video signal having the output luminance level is output to the driver through an output logic of the liquid crystal display.

The driving method of a liquid crystal display according to claim 8, wherein the driving method further comprises the following steps:

The compensation signal is superimposed to the next video signal by a generator of the liquid crystal display to produce an output video signal having the output brightness level. The driving method of a liquid crystal display according to claim 12, wherein the driving method further comprises the following steps:

The output video signal having the output brightness level is output to the driver through an output logic of the liquid crystal display.

A liquid crystal display, comprising:

Input logic for inputting a video signal from the host;

a determiner, configured to determine, according to the change of the video signal and the next video signal, whether the state is a change state, and superimpose the compensation signal to the next video signal corresponding to the change state to determine an output brightness level;

a driver, driving each pixel of the image of each frame to a liquid crystal cell displaying the image based on the output brightness level determined by the determiner;

An output logic for outputting the output video signal having the output brightness level to the driver;

The determiner includes a lookup table, where the lookup table stores a brightness level of the liquid crystal unit determined corresponding to the previous brightness level and the next brightness level, and according to the lookup table The read brightness level is judged whether it is a changed state.