CN105810159A - Liquid crystal display control method and liquid crystal display - Google Patents
Liquid crystal display control method and liquid crystal display Download PDFInfo
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- CN105810159A CN105810159A CN201410855434.XA CN201410855434A CN105810159A CN 105810159 A CN105810159 A CN 105810159A CN 201410855434 A CN201410855434 A CN 201410855434A CN 105810159 A CN105810159 A CN 105810159A
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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Abstract
The invention relates to a liquid crystal display control method and a liquid crystal display. The method comprises the steps that after the liquid crystal display is electrified, image signal scanning of a liquid crystal display panel and dimming signal scanning of a back light are started, wherein an image signal of the liquid crystal display panel and an dimming signal of the back light are asynchronous; according to the relation between the dimming signal scanning frequency A of the back light and the image signal scanning frequency B of the liquid crystal display, A is greater than B and A is not equal to N*B, wherein N is an integer greater than 0. According to the invention, the phenomenon of flashing of backlight opposite screen scanning is avoided; the display quality effect of a liquid crystal television and other liquid crystal displays can be improved; a product has high performance price ratio; and the market competition ability of a product is enhanced.
Description
Technical field
The present invention relates to liquid crystal tv technology field, particularly relate to a kind of liquid crystal display control method and liquid crystal display.
Background technology
In current liquid crystal indicator, backlight and display panels (OpenCell) adopt synchronous scanning technology.Under backlight Duty=100% state, the application of this technology can meet liquid crystal display image quality requirement；As backlight Duty, < when 100%, there is the bright state of bright back light, the synchronous scanning of display panels of now arranging in pairs or groups again in backlight, image quality there will be exception.
And along with the development of liquid crystal tv technology, for pursuing high image quality requirement, movement image quality processes can increase LocalDimming (the bright dark control in local), the natural technology such as light, motion compensation in function.The application of these technology so that the Duty value of backlight changes, in user's use procedure, there is the bright state of bright back light in backlight, influences whether image quality effect.
Summary of the invention
Present invention is primarily targeted at a kind of liquid crystal display control method of offer and liquid crystal display, it is intended to promote LCD TV display image quality effect.
In order to achieve the above object, the present invention proposes a kind of liquid crystal display control method, including:
After liquid crystal display is energized, the dim signal of the picture signal scanning and backlight that start display panels scans,
The phase place of the picture signal of described display panels and the dim signal of backlight is asynchronous；
The relation of the picture signal rate of scanning B of described backlight dimming signal scanning frequency A and display panels meets: A > B, and A ≠ N*B, wherein, N is the integer more than 0.
Preferably, the described dim signal sweep start time is later than the described picture signal sweep start time.
Preferably, in the first start-up time of backlight of the described backlight 1/5*Tr time after the liquid crystal of described display panels starts rotational instant, wherein, Tr is that the liquid crystal molecule of display panels switches the time rotated between two pictures.
Preferably, described dim signal sweep start time and described picture signal sweep start time warping, in the first start-up time of backlight of the described backlight 1/5*Tr time before the liquid crystal of described display panels terminates rotational instant, wherein, Tr is that the liquid crystal molecule of display panels switches the time rotated between two pictures.
Preferably, A > B+24HZ.
The embodiment of the present invention also proposes a kind of liquid crystal display controlling liquid crystal display, including:
Starting module, for after liquid crystal display is energized, the dim signal of the picture signal scanning and backlight that start display panels scans, and the phase place of the picture signal of described display panels and the dim signal of backlight is asynchronous；The relation of the picture signal rate of scanning B of described backlight dimming signal scanning frequency A and display panels meets: A > B, and A ≠ N*B, wherein, N is the integer more than 0.
Preferably, the described dim signal sweep start time is later than the described picture signal sweep start time.
Preferably, in the first start-up time of backlight of the described backlight 1/5*Tr time after the liquid crystal of described display panels starts rotational instant, wherein, Tr is that the liquid crystal molecule of display panels switches the time rotated between two pictures.
Preferably, described dim signal sweep start time and described picture signal sweep start time warping, in the first start-up time of backlight of the described backlight 1/5*Tr time before the liquid crystal of described display panels terminates rotational instant, wherein, Tr is that the liquid crystal molecule of display panels switches the time rotated between two pictures.
Preferably, A > B+24HZ.
A kind of liquid crystal display control method of embodiment of the present invention proposition and liquid crystal display, after liquid crystal display is energized, the dim signal of the picture signal scanning and backlight that start display panels scans, and the phase place of the picture signal of described display panels and the dim signal of backlight is asynchronous；The relation of the picture signal rate of scanning B of backlight dimming signal scanning frequency A and display panels meets: A > B, and A ≠ N*B, wherein, N is the integer more than 0, thus avoid backlight photo and scintillation is occurred in screen scanning, improve the display image quality effect of the liquid crystal displays such as LCD TV, make product have high performance-price ratio, the improving product market competitiveness.
Accompanying drawing explanation
Fig. 1 is traditional backlight and the rate of scanning of display panels designs, and carries movement image quality and processes function, corresponding single pixel sequential chart；
Fig. 2 is traditional backlight and the rate of scanning of display panels designs, and carries movement image quality and processes function, uses MPRT instrument test motion picture handoff procedure, the RGB brightness flop curve that S cycle integrated of single pixel is average；
Fig. 3 is the backlight asynchronous Scan Design of phase place with display panels of the embodiment of the present invention, carries movement image quality and processes function, a kind of sequential chart of corresponding single pixel；
Fig. 4 is the backlight asynchronous Scan Design of phase place with display panels of the embodiment of the present invention, carries movement image quality and processes function, the another kind of sequential chart of corresponding single pixel；
Fig. 5 is backlight and the asynchronous Scan Design of display panels of the embodiment of the present invention, carries movement image quality and processes function, uses MPRT instrument test motion picture handoff procedure, the RGB brightness flop curve that S cycle integrated of single pixel is average.
In order to make technical scheme clearly, understand, be described in further detail below in conjunction with accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
The solution of the embodiment of the present invention is mainly: after liquid crystal display is energized, and the dim signal of the picture signal scanning and backlight that start display panels scans, and the phase place of the picture signal of display panels and the dim signal of backlight is asynchronous；；In addition, backlight dimming signal frequency (backlight drive board PWM frequency) A, different from the rate of scanning B of display panels, simultaneously, for avoiding backlight photo that screen scanning is occurred scintillation, backlight rate of scanning is at least above screen rate of scanning 24HZ, i.e. A > B+24HZ, and A ≠ N*B (N=1,2, ...), by above-mentioned timing Design, can greatly promote liquid crystal display image quality effect.
Present pre-ferred embodiments proposes a kind of liquid crystal display control method, including:
After liquid crystal display is energized, the dim signal of the picture signal scanning and backlight that start display panels scans, and the phase place of the picture signal of described display panels and the dim signal of backlight is asynchronous；The relation of the picture signal rate of scanning B of described backlight dimming signal scanning frequency A and display panels meets: A > B, and A ≠ N*B, wherein, N is the integer more than 0.
Owing to, in prior art, at backlight Duty, < when 100%, there is the bright state of bright back light in backlight, meanwhile, backlight adopts synchronous scanning with display panels, causes picture image quality to occur abnormal.
The dim signal of the present embodiment scheme backlight and the asynchronous scanning of display panels, even if the phase place of the dim signal of the picture signal of display panels and backlight is asynchronous, and it is different with the picture signal rate of scanning B of display panels to regulate backlight dimming signal scanning frequency A, collocation movement image quality processes function, can avoid backlight photo that screen scanning is occurred scintillation, it is achieved the optimization of liquid crystal display image quality.
Specifically, after liquid crystal display is energized, first, the movement of liquid crystal display drives received image signal scan control signal to the screen of display panels, the screen of display panels drives according to the picture signal scan control signal received, starting picture signal scanning, the liquid crystal molecule in display panels starts to rotate；In addition, the screen of display panels drives and feeds back corresponding control signal to backlight drive, after backlight drive receives the control signal of display panels feedback, starts dim signal scanning, and the backlight open moment of backlight is controlled, periodically control bright flush type switch and dim.
In the present embodiment, by make the startup time of backlight dimming signal scanning compare display panels picture signal scanning startup time T1 there is certain time-delay, and it is different with the picture signal rate of scanning of display panels to regulate backlight dimming signal scanning frequency, it is achieved the dim signal of backlight is asynchronous with the scanning phase place of screen.
It is detected by human eye to prevent liquid crystal from rotating produced blur effect, usually, 1/5*Tr (Tr is that the liquid crystal molecule of display panels switches the time rotated between two pictures) after liquid crystal rotation starts and before end is in the time, think liquid crystal status start with it to rotate before or to terminate postrotational steady statue consistent, therefore, in this interval, backlight carries out breakdown action, will not derive the bad problem of image quality.
Based on above-mentioned consideration, the present embodiment, when backlight open moment of backlight is controlled, specifically can adopt following scheme:
As a kind of embodiment, it is referred to shown in Fig. 3, after liquid crystal display is energized, start the picture signal scanning of display panels, the startup time is T1, beginning T1 sweep time of the picture signal starting sweep time and display panels controlling the dim signal of backlight is unequal, and the dim signal sweep start time is later than the picture signal sweep start time；In addition, backlight is started in △ T time after tl, the liquid crystal molecule that described △ T is display panels rotates the 1/5*Tr after starting, it is engraved in the 1/5*Tr time after liquid crystal starts rotational instant when namely controlling the backlight open of backlight, wherein, Tr is that the liquid crystal molecule of display panels switches the time rotated between two pictures.
As another embodiment, it is possible to reference to shown in Fig. 4, after liquid crystal display is energized, starting the picture signal scanning of display panels, the startup time is T1；Dim signal sweep start time and described picture signal sweep start time warping, backlight is started in Tr-△ T time after tl, the liquid crystal molecule that described △ T is display panels rotates the 1/5*Tr before terminating, it is engraved in the 1/5*Tr time before liquid crystal terminates rotational instant when namely controlling the backlight open of backlight, wherein, Tr is that the liquid crystal molecule of display panels switches the time rotated between two pictures, and Tr is that the liquid crystal molecule of display panels switches the time rotated between two pictures.
After the picture signal scanning starting display panels and backlight dimming signal scanning, regulate backlight drive board PWM frequency A, make it asynchronous with the rate of scanning B of display panels, simultaneously, for avoiding backlight photo that screen scanning is occurred scintillation, the relation making the picture signal rate of scanning B of backlight dimming signal scanning frequency A and display panels meets: A > B, and A ≠ N*B, wherein, N is the integer more than 0, as a kind of preferred version, backlight rate of scanning is at least above screen rate of scanning 24HZ, i.e. A > B+24HZ, and A ≠ N*B (N=1,2 ...).Above-mentioned timing Design, can greatly promote liquid crystal display image quality effect.
The present embodiment passes through such scheme, and after liquid crystal display is energized, the dim signal of the picture signal scanning and backlight that start display panels scans, and the phase place of the picture signal of display panels and the dim signal of backlight is asynchronous；The relation of the picture signal rate of scanning B of backlight dimming signal scanning frequency A and display panels meets: A > B, and A ≠ N*B, wherein, N is the integer more than 0, thus avoid backlight photo and scintillation is occurred in screen scanning, improve the display image quality effect of the liquid crystal displays such as LCD TV, make product have high performance-price ratio, the improving product market competitiveness.
Further, the embodiment of the present invention improvement effect to image quality is tested for example, it is possible to introduce MPRT instrument test simulation result as image quality criterion.
Wherein, MPRT instrument is simulation eye-observation motion picture image quality effect, and it carries out the test instrunment quantified with graph mode.
With reference to shown in Fig. 1 and Fig. 2, Fig. 1 is traditional backlight (BLU) and the rate of scanning of display panels (OpenCell) design, carries movement image quality process function, single pixel sequential chart of correspondence.
Fig. 2 is traditional backlight and the rate of scanning of display panels designs, and carries movement image quality and processes function, uses MPRT instrument test motion picture handoff procedure, the RGB brightness flop curve that the individual cycle integrated of single pixel S (S >=20) is average.
Owing to traditional backlight and display panels are synchronous scanning, single pixel is within S cycle, backlight switch is constantly in same phase place with display panels scanning, after integration, can substantially observe that from curve RGB curve exists flex point, namely the bright back light of backlight is bright can be caught in, and is reacted to the image quality deleterious of human eye.
With reference to shown in Fig. 3 and Fig. 4, the asynchronous Scan Design of phase place of the dim signal of the backlight of Fig. 3 and Fig. 4 respectively embodiment of the present invention and the picture signal of display panels, namely after regulating backlight startup time and backlight drive PWM frequency, carry movement image quality and process function, two kinds of sequential charts of corresponding single pixel.Wherein, Tr is that liquid crystal switches the time rotated between two pictures.
It is detected by human eye to prevent liquid crystal from rotating produced blur effect, usually, in the 1/5*Tr time after liquid crystal rotation starts and before end, think liquid crystal status start with it to rotate before or to terminate postrotational steady statue consistent, therefore, in this interval, backlight carries out breakdown action, will not derive the bad problem of image quality.
In the present embodiment, in the phase place asynchronous design of backlight and display panels, the scanning of display panels and backlight start in time control, needing to meet the backlight open moment meets liquid crystal and remains stable for the state moment, namely the backlight open moment to postpone the scanning start-up time in display panels, the backlight open moment can within the △ T=1/5*Tr time after liquid crystal starts rotational instant (as shown in Figure 3 sequential chart), or within the front △ T=1/5*Tr time that liquid crystal terminates rotational instant (as shown in Figure 4 sequential chart).
With reference to shown in Fig. 5, Fig. 5 is backlight and the asynchronous Scan Design of display panels of the embodiment of the present invention, carry movement image quality and process function, use MPRT instrument test motion picture handoff procedure, the RGB brightness flop curve that the individual cycle integrated of single pixel S (S >=20) is average.
As can be seen from Figure 5, owing to backlight and the display panels of the present invention are asynchronous scanning, single pixel is within S cycle, the scanning phase place of backlight switch and display panels changes always, from curve, RGB curve be can be observed after integration be absent from flex point, namely the bright dark scintillation of backlight is by this technical optimization, and the image quality being reacted to human eye is effect improved to optimum state.
Accordingly, it is proposed to the present invention controls the liquid crystal display of liquid crystal display.
Present pre-ferred embodiments proposes a kind of liquid crystal display controlling liquid crystal display, including: start module wherein:
Starting module 201, for after liquid crystal display is energized, the dim signal of the picture signal scanning and backlight that start display panels scans, and the phase place of the picture signal of display panels and the dim signal of backlight is asynchronous；The relation of the picture signal rate of scanning B of backlight dimming signal scanning frequency A and display panels meets: A > B, and A ≠ N*B, wherein, N is the integer more than 0.
Further, described startup module 201, being additionally operable to the backlight open moment of backlight is controlled, specifically for after liquid crystal display is energized, the beginning of the picture signal starting sweep time and display panels controlling the dim signal of backlight is unequal for sweep time；And it is engraved in the 1/5*Tr time after liquid crystal starts rotational instant when controlling the backlight open of backlight, wherein, Tr is that the liquid crystal molecule of display panels switches the time rotated between two pictures；Or being engraved in the 1/5*Tr time before liquid crystal terminates rotational instant when controlling the backlight open of backlight, wherein, Tr is that the liquid crystal molecule of display panels switches the time rotated between two pictures.
Specifically, after liquid crystal display is energized, first, the movement of liquid crystal display drives received image signal scan control signal to the screen of display panels, the screen of display panels drives according to the picture signal scan control signal received, starting picture signal scanning, the liquid crystal molecule in display panels starts to rotate；In addition, the screen of display panels drives and feeds back corresponding control signal to backlight drive, after backlight drive receives the control signal of display panels feedback, starts dim signal scanning, and the backlight open moment of backlight is controlled, periodically control bright flush type switch and dim.
In the present embodiment, by make the startup time of backlight dimming signal scanning compare display panels picture signal scanning startup time T1 there is certain time-delay, the described dim signal sweep start time is later than described picture signal sweep start time or described dim signal sweep start time and described picture signal sweep start time warping, and it is different with the picture signal rate of scanning of display panels to regulate backlight dimming signal scanning frequency, it is achieved the dim signal of backlight is asynchronous with the scanning phase place of screen.
It is detected by human eye to prevent liquid crystal from rotating produced blur effect, usually, 1/5*Tr (Tr is that the liquid crystal molecule of display panels switches the time rotated between two pictures) after liquid crystal rotation starts and before end is in the time, think liquid crystal status start with it to rotate before or to terminate postrotational steady statue consistent, therefore, in this interval, backlight carries out breakdown action, will not derive the bad problem of image quality.
Based on above-mentioned consideration, when backlight open moment of backlight is controlled, following scheme specifically can be adopted:
As a kind of embodiment, it is referred to shown in Fig. 3, after liquid crystal display is energized, start the picture signal scanning of display panels, the startup time is T1, beginning T1 sweep time of the picture signal starting sweep time and display panels controlling the dim signal of backlight is unequal, and the dim signal sweep start time is later than the picture signal sweep start time；In addition, backlight is started in △ T time after tl, the liquid crystal molecule that described △ T is display panels rotates the 1/5*Tr after starting, it is engraved in the 1/5*Tr time after liquid crystal starts rotational instant when namely controlling the backlight open of backlight, wherein, Tr is that the liquid crystal molecule of display panels switches the time rotated between two pictures.
As another embodiment, it is possible to reference to shown in Fig. 4, after liquid crystal display is energized, starting the picture signal scanning of display panels, the startup time is T1；Dim signal sweep start time and described picture signal sweep start time warping, backlight is started in Tr-△ T time after tl, the liquid crystal molecule that described △ T is display panels rotates the 1/5*Tr before terminating, it is engraved in the 1/5*Tr time before liquid crystal terminates rotational instant when namely controlling the backlight open of backlight, wherein, Tr is that the liquid crystal molecule of display panels switches the time rotated between two pictures, and Tr is that the liquid crystal molecule of display panels switches the time rotated between two pictures.
After the picture signal scanning starting display panels and backlight dimming signal scanning, regulate backlight drive board PWM frequency A, make it asynchronous with the rate of scanning B of display panels, simultaneously, for avoiding backlight photo that screen scanning is occurred scintillation, the relation making the picture signal rate of scanning B of backlight dimming signal scanning frequency A and display panels meets: A > B, and A ≠ N*B, wherein, N is the integer more than 0, as a kind of preferred version, backlight rate of scanning is at least above screen rate of scanning 24HZ, i.e. A > B+24HZ, and A ≠ N*B (N=1,2 ...).Above-mentioned timing Design, can greatly promote liquid crystal display image quality effect.
The present embodiment passes through such scheme, and after liquid crystal display is energized, the dim signal of the picture signal scanning and backlight that start display panels scans, and the phase place of the picture signal of display panels and the dim signal of backlight is asynchronous；The relation of the picture signal rate of scanning B of backlight dimming signal scanning frequency A and display panels meets: A > B, and A ≠ N*B, wherein, N is the integer more than 0, thus avoid backlight photo and scintillation is occurred in screen scanning, improve the display image quality effect of the liquid crystal displays such as LCD TV, make product have high performance-price ratio, the improving product market competitiveness.
Further, the embodiment of the present invention improvement effect to image quality is tested for example, it is possible to introduce MPRT instrument test simulation result as image quality criterion.
Wherein, MPRT instrument is simulation eye-observation motion picture image quality effect, and it carries out the test instrunment quantified with graph mode.
With reference to shown in Fig. 1 and Fig. 2, Fig. 1 is traditional backlight (BLU) and the rate of scanning of display panels (OpenCell) design, carries movement image quality process function, single pixel sequential chart of correspondence.
Fig. 2 is traditional backlight and the rate of scanning of display panels designs, and carries movement image quality and processes function, uses MPRT instrument test motion picture handoff procedure, the RGB brightness flop curve that the individual cycle integrated of single pixel S (S >=20) is average.
Owing to traditional backlight and display panels are synchronous scanning, single pixel is within S cycle, backlight switch is constantly in same phase place with display panels scanning, after integration, can substantially observe that from curve RGB curve exists flex point, namely the bright back light of backlight is bright can be caught in, and is reacted to the image quality deleterious of human eye.
With reference to shown in Fig. 3 and Fig. 4, the asynchronous Scan Design of phase place of the dim signal of the backlight of Fig. 3 and Fig. 4 respectively embodiment of the present invention and the picture signal of display panels, namely after regulating backlight startup time and backlight drive PWM frequency, carry movement image quality and process function, two kinds of sequential charts of corresponding single pixel.Wherein, Tr is that liquid crystal switches the time rotated between two pictures.
It is detected by human eye to prevent liquid crystal from rotating produced blur effect, usually, in the 1/5*Tr time after liquid crystal rotation starts and before end, think liquid crystal status start with it to rotate before or to terminate postrotational steady statue consistent, therefore, in this interval, backlight carries out breakdown action, will not derive the bad problem of image quality.
In the present embodiment, in the phase place asynchronous design of backlight and display panels, the scanning of display panels and backlight start in time control, needing to meet the backlight open moment meets liquid crystal and remains stable for the state moment, namely the backlight open moment to postpone the scanning start-up time in display panels, the backlight open moment can within the △ T=1/5*Tr time after liquid crystal starts rotational instant (as shown in Figure 3 sequential chart), or within the front △ T=1/5*Tr time that liquid crystal terminates rotational instant (as shown in Figure 4 sequential chart).
With reference to shown in Fig. 5, Fig. 5 is backlight and the asynchronous Scan Design of display panels of the embodiment of the present invention, carry movement image quality and process function, use MPRT instrument test motion picture handoff procedure, the RGB brightness flop curve that the individual cycle integrated of single pixel S (S >=20) is average.
As can be seen from Figure 5, owing to backlight and the display panels of the present invention are asynchronous scanning, single pixel is within S cycle, the scanning phase place of backlight switch and display panels changes always, from curve, RGB curve be can be observed after integration be absent from flex point, namely the bright dark scintillation of backlight is by this technical optimization, and the image quality being reacted to human eye is effect improved to optimum state.
Embodiment of the present invention liquid crystal display control method and liquid crystal display, after liquid crystal display is energized, the dim signal of the picture signal scanning and backlight that start display panels scans, and the phase place making the picture signal of display panels and the dim signal of backlight is asynchronous；Regulate the picture signal rate of scanning B of backlight dimming signal scanning frequency A and display panels, the relation making the picture signal rate of scanning B of backlight dimming signal scanning frequency A and display panels meets: A > B, and A ≠ N*B, wherein, N is the integer more than 0, thus avoid backlight photo and screen scanning is occurred scintillation, improve the display image quality effect of the liquid crystal displays such as LCD TV, product is made to have high performance-price ratio, the improving product market competitiveness.
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure utilizing description of the present invention and accompanying drawing content to make or flow process conversion; or directly or indirectly it is used in other relevant technical field, all in like manner include in the scope of patent protection of the present invention.
Claims (10)
1. a liquid crystal display control method, it is characterised in that including:
After liquid crystal display is energized, the dim signal of the picture signal scanning and backlight that start display panels scans,
The phase place of the picture signal of described display panels and the dim signal of backlight is asynchronous；
The relation of the picture signal rate of scanning B of described backlight dimming signal scanning frequency A and display panels meets: A > B, and A ≠ N*B, wherein, N is the integer more than 0.
2. method according to claim 1, it is characterised in that the described dim signal sweep start time is later than the described picture signal sweep start time.
3. method according to claim 2, it is characterized in that, in the first start-up time of backlight of the described backlight 1/5*Tr time after the liquid crystal of described display panels starts rotational instant, wherein, Tr is that the liquid crystal molecule of display panels switches the time rotated between two pictures.
4. method according to claim 1, it is characterized in that, described dim signal sweep start time and described picture signal sweep start time warping, in the first start-up time of backlight of the described backlight 1/5*Tr time before the liquid crystal of described display panels terminates rotational instant, wherein, Tr is that the liquid crystal molecule of display panels switches the time rotated between two pictures.
5. the method according to any one of claim 1-4, it is characterised in that A > B+24HZ.
6. the liquid crystal display controlling liquid crystal display, it is characterised in that including:
Starting module, for after liquid crystal display is energized, the dim signal of the picture signal scanning and backlight that start display panels scans, and the phase place of the picture signal of described display panels and the dim signal of backlight is asynchronous；The relation of the picture signal rate of scanning B of described backlight dimming signal scanning frequency A and display panels meets: A > B, and A ≠ N*B, wherein, N is the integer more than 0.
7. liquid crystal display according to claim 6, it is characterised in that the described dim signal sweep start time is later than the described picture signal sweep start time.
8. liquid crystal display according to claim 7, it is characterized in that, in the first start-up time of backlight of the described backlight 1/5*Tr time after the liquid crystal of described display panels starts rotational instant, wherein, Tr is that the liquid crystal molecule of display panels switches the time rotated between two pictures.
9. liquid crystal display according to claim 7, it is characterized in that, described dim signal sweep start time and described picture signal sweep start time warping, in the first start-up time of backlight of the described backlight 1/5*Tr time before the liquid crystal of described display panels terminates rotational instant, wherein, Tr is that the liquid crystal molecule of display panels switches the time rotated between two pictures.
10. the liquid crystal display according to any one of claim 6-9, it is characterised in that A > B+24HZ.
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| CN201410855434.XA CN105810159B (en) | 2014-12-31 | 2014-12-31 | Liquid crystal display control method and liquid crystal display |
| PCT/CN2015/092270 WO2016107247A1 (en) | 2014-12-31 | 2015-10-20 | Liquid crystal display control method and liquid crystal display |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111048053A (en) * | 2020-01-03 | 2020-04-21 | Tcl华星光电技术有限公司 | Liquid crystal display device and driving method thereof |
| WO2023121830A1 (en) * | 2021-12-24 | 2023-06-29 | Intel Corporation | Asynchronous control of a backlight for a liquid crystal display |
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| WO2016107247A1 (en) | 2016-07-07 |
| CN105810159B (en) | 2019-01-01 |
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