CN104751817A - Drive circuit and drive method - Google Patents
Drive circuit and drive method Download PDFInfo
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- CN104751817A CN104751817A CN201510153052.7A CN201510153052A CN104751817A CN 104751817 A CN104751817 A CN 104751817A CN 201510153052 A CN201510153052 A CN 201510153052A CN 104751817 A CN104751817 A CN 104751817A
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- controller
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- time schedule
- integrated circuit
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- 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
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3685—Details of drivers for data electrodes
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- 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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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Optics & Photonics (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The invention discloses a drive circuit and a drive method, belongs to the technical field of display and solves the technical problem of the conventional LCD (liquid crystal display) of color drift in large watching view angle. The drive circuit comprises a time schedule controller, a gamma voltage controller and a data source integrated circuit. The time schedule controller is arranged between two adjacent frames and outputs different assignments to the gamma voltage controller. According to the assignments, the gamma voltage controller outputs different gamma voltages to the data source integrated circuit between two adjacent frame, allowing a same sub-pixel to get different gamma voltages between two adjacent frames. The drive circuit and the drive method are applicable to display devices such as LCD TVs, LCDs, mobile phones and tablet personal computers.
Description
Technical field
The present invention relates to display technique field, specifically, relate to a kind of driving circuit and driving method.
Background technology
Along with the development of display technique, liquid crystal display has become display device the most common.
When watching the image of liquid crystal display display, if viewing visual angle becomes large, the image watched just there will be the phenomenon of color drift (color shift).Viewing visual angle is larger, and the phenomenon of color drift is more serious.Fig. 1 is the correlation curve of input GTG under different viewing visual angle and brightness, and wherein transverse axis represents GTG, and have 256 GTGs in this example, the longitudinal axis represents relative brightness.As can be seen from Figure 1, when viewing visual angle is 0 ° (during the viewing of front), correlation curve is comparatively level and smooth, and its gamma (gamma) value is 2.2.When viewing visual angle is 30 °, correlation curve can produce deviation, and when viewing visual angle is 60 °, correlation curve has created sizable deviation, and its gamma value also there occurs larger change.
Therefore, there is the technical matters of large viewing viewing angle color drift in existing liquid crystal display, and it is larger to watch visual angle, and the phenomenon of color drift is more serious.
Summary of the invention
The object of the present invention is to provide a kind of driving circuit and driving method, to solve the technical matters that existing liquid crystal display exists the drift of large viewing viewing angle color.
The invention provides a kind of driving circuit, comprise time schedule controller, gamma voltage controller and data source integrated circuit;
Described time schedule controller exports different assignment to described gamma voltage controller in adjacent two frames, described gamma voltage controller exports different gamma electric voltages according to described different assignment to described data source integrated circuit in adjacent two frames, makes same sub-pixel obtain different gamma electric voltages in adjacent two frames.
Preferably, described gamma voltage controller can export n kind gamma electric voltage, is correspondingly provided with n assignment in described time schedule controller.Wherein, 4≤n≤14.
Further, in described time schedule controller, be provided with register, for storing described assignment.
Preferably, be connected by IC bus between described time schedule controller with described gamma voltage controller.
Further, this driving circuit also comprises recording controller;
Described time schedule controller is to described recording controller output timing signal, and described recording controller is to described data source integrated circuit input data-signal;
Described data source integrated circuit is according to described data-signal and described gamma electric voltage output drive signal.
Preferably, the refresh rate of described driving circuit is at more than 60Hz.
The present invention also provides a kind of driving method, comprising:
Time schedule controller exports different assignment to gamma voltage controller in adjacent two frames;
Described gamma voltage controller exports different gamma electric voltages according to described different assignment to data source integrated circuit in adjacent two frames, makes same sub-pixel obtain different gamma electric voltages in adjacent two frames.
Further, this driving method also comprises:
Described time schedule controller is to recording controller output timing signal, and described recording controller is to described data source integrated circuit input data-signal;
Described data source integrated circuit is according to described data-signal and described gamma electric voltage output drive signal.
Preferably, described gamma voltage controller can export n kind gamma electric voltage, is correspondingly provided with n assignment in described time schedule controller;
Wherein, 4≤n≤14.
Further, in described time schedule controller, be provided with register, for storing described assignment.
Present invention offers following beneficial effect: driving circuit provided by the invention and driving method can be applicable in liquid crystal display.In the two continuous frames image shown by liquid crystal display, time schedule controller exports different assignment to gamma voltage controller, make gamma voltage controller export different gamma electric voltages to data source integrated circuit, make same sub-pixel obtain different gamma electric voltages in adjacent two frames.Like this, each sub-pixel in this two two field picture just has different optical brightness curves separately, when human eye watches this two two field picture at short notice, this two two field picture can be synthesized, each sub-pixel in image after synthesis has comparatively ideal optical brightness curve, and its gamma value is closer to 2.2, thus solve the technical matters of large viewing viewing angle color drift.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from instructions, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in instructions, claims and accompanying drawing and obtain.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, accompanying drawing required in describing is done simple introduction below to embodiment:
Fig. 1 is the input GTG of existing liquid crystal display under difference viewing visual angle and the correlation curve schematic diagram of brightness;
Fig. 2 is the schematic diagram of the driving circuit that the embodiment of the present invention provides;
Fig. 3 is the schematic diagram of the optical brightness curve that driving circuit that the embodiment of the present invention provides reaches;
Fig. 4 is the process flow diagram of the driving method that the embodiment of the present invention provides.
Embodiment
Describe embodiments of the present invention in detail below with reference to drawings and Examples, to the present invention, how application technology means solve technical matters whereby, and the implementation procedure reaching technique effect can fully understand and implement according to this.It should be noted that, only otherwise form conflict, each embodiment in the present invention and each feature in each embodiment can be combined with each other, and the technical scheme formed is all within protection scope of the present invention.
The embodiment of the present invention provides a kind of driving circuit, comprises time schedule controller, gamma voltage controller and data source integrated circuit.Time schedule controller exports different assignment to gamma voltage controller in adjacent two frames, gamma voltage controller exports different gamma electric voltages according to different assignment to data source integrated circuit in adjacent two frames, makes same sub-pixel obtain different gamma electric voltages in adjacent two frames.
The driving circuit that the embodiment of the present invention provides can be applicable in liquid crystal display.In the two continuous frames image shown by liquid crystal display, time schedule controller exports different assignment to gamma voltage controller, make gamma voltage controller export different gamma electric voltages to data source integrated circuit, make same sub-pixel obtain different gamma electric voltages in adjacent two frames.Like this, each sub-pixel in this two two field picture just has different optical brightness curves separately, when human eye watches this two two field picture at short notice, this two two field picture can be synthesized, each sub-pixel in image after synthesis has comparatively ideal optical brightness curve, and its gamma value is closer to 2.2, thus solve the technical matters of large viewing viewing angle color drift.
embodiment one:
As shown in Figure 2, the driving circuit that the embodiment of the present invention provides comprises time schedule controller (TimingController, be called for short T-CON), gamma voltage controller and data source integrated circuit (Data IC), wherein gamma voltage controller can adopt gamma electric voltage integrated manipulator able to programme (P-gamma IC).
Time schedule controller exports different assignment to gamma voltage controller in adjacent two frames, and gamma voltage controller exports different gamma electric voltages according to different assignment to data source integrated circuit in adjacent two frames.Be further, in the driving circuit that the embodiment of the present invention provides, also comprise the recording controller be arranged in time schedule controller, time schedule controller is to recording controller output timing signal, recording controller is to data source integrated circuit input data-signal, then data source integrated circuit is according to data-signal and gamma electric voltage, to the pieces of data line output drive signal in liquid crystal panel.
As a preferred version, connected by IC bus (Inter-Integrated Circuit is called for short IIC) between time schedule controller and gamma voltage controller.IC bus uses signal wire minimum in various bus, and have the functions such as the synchronous and arbitration of automatic addressing, many host clock.Therefore, IC bus is used to have convenient, flexible in the driving circuit, the advantages such as volume is little.
In the present embodiment, gamma voltage controller can export n kind gamma electric voltage, is correspondingly provided with n assignment in time schedule controller, and the value of n is usually between 4 to 14.For n=10 in the present embodiment, in addition, in time schedule controller, be also provided with register (register), for storing this 10 assignment.
The course of work of the driving circuit that the embodiment of the present invention provides is as follows:
Two P-gamma programs are comprised in the program of time schedule controller, and assignment different in two corresponding registers of P-gamma program.
In the first frame, time schedule controller obtains a suitable assignment by one of them P-gamma program, and exports to gamma voltage controller, and gamma voltage controller exports corresponding gamma electric voltage according to this assignment to data source integrated circuit.Meanwhile, time schedule controller is also to recording controller output timing signal, and then recording controller is to data source integrated circuit input data-signal.Data source integrated circuit just according to data-signal and gamma electric voltage, to the pieces of data line output drive signal in liquid crystal panel, can realize the display of this two field picture, and each sub-pixel in this two field picture is all shown with this gamma electric voltage.
In the second frame, time schedule controller obtains another assignment by another P-gamma program, and exports to gamma voltage controller, and gamma voltage controller exports the gamma electric voltage being different from former frame accordingly to data source integrated circuit according to this assignment.Meanwhile, time schedule controller is also to recording controller output timing signal, and then recording controller is to data source integrated circuit input data-signal.Data source integrated circuit just according to data-signal and gamma electric voltage, to the pieces of data line output drive signal in liquid crystal panel, can realize the display of this two field picture, makes each sub-pixel in this two field picture all to be different from the gamma electric voltage display of former frame.
The gamma electric voltage exported due to gamma voltage controller in this two frame is different, so each sub-pixel in this two two field picture has different optical brightness curves.When human eye watches this two two field picture at short notice, this two two field picture can be synthesized, the optical brightness curve of each sub-pixel in the image after synthesis is more close to ideal curve, as shown in Figure 3, and its gamma value is closer to 2.2, thus solve the technical matters of large viewing viewing angle color drift, improve the display quality of liquid crystal display.
Preferably, the refresh rate of driving circuit that provides of the embodiment of the present invention is at more than 60Hz.Human eye is when synthesizing two continuous frames image, and the time interval of two two field pictures is shorter, and synthetic effect is also better, so the refresh rate of liquid crystal display is higher, just can better solution watch greatly viewing angle color drift technical matters.
The technical scheme that the embodiment of the present invention provides, by improving time schedule controller, achieves from the time and improves the technical matters of color drift.More compared at present application from the technical scheme (pixel partitions technology) spatially improving color drift, the technical scheme that the embodiment of the present invention provides has the following advantages: do not need in liquid crystal panel, increase the circuit structures such as a lot of sweep trace, data line, thin film transistor (TFT), so aperture opening ratio and the transmitance of liquid crystal panel can not be reduced, and because circuit structure is more simple, thus reduce complexity and the production cost of manufacture process.
embodiment two:
The embodiment of the present invention also provides a kind of driving method, can be used in the liquid crystal indicators such as LCD TV, mobile phone, panel computer.As shown in Figure 4, this driving method comprises:
S11: time schedule controller exports different assignment to gamma voltage controller in adjacent two frames.
S12: gamma voltage controller exports different gamma electric voltages according to different assignment to data source integrated circuit in adjacent two frames, makes same sub-pixel obtain different gamma electric voltages in adjacent two frames.
Further, this driving method also comprises:
S2: time schedule controller is to recording controller output timing signal, and recording controller is to data source integrated circuit input data-signal.
S3: data source integrated circuit is according to data-signal and gamma electric voltage output drive signal.
In the present embodiment, gamma voltage controller can export n kind gamma electric voltage, is correspondingly provided with n assignment in time schedule controller, and the value of n is usually between 4 to 14.For n=10 in the present embodiment, in addition, in time schedule controller, be also provided with register, for storing this 10 assignment.
In the present embodiment, in the program of time schedule controller, comprise two P-gamma programs, and assignment different in two corresponding registers of P-gamma program.
In the first frame, time schedule controller obtains a suitable assignment by one of them P-gamma program, and exports to gamma voltage controller, and gamma voltage controller exports corresponding gamma electric voltage according to this assignment to data source integrated circuit.Meanwhile, time schedule controller is also to recording controller output timing signal, and then recording controller is to data source integrated circuit input data-signal.Data source integrated circuit just according to data-signal and gamma electric voltage, to the pieces of data line output drive signal in liquid crystal panel, can realize the display of this two field picture, and each sub-pixel in this two field picture is all shown with this gamma electric voltage.
In the second frame, time schedule controller obtains another assignment by another P-gamma program, and exports to gamma voltage controller, and gamma voltage controller exports the gamma electric voltage being different from former frame accordingly to data source integrated circuit according to this assignment.Meanwhile, time schedule controller is also to recording controller output timing signal, and then recording controller is to data source integrated circuit input data-signal.Data source integrated circuit just according to data-signal and gamma electric voltage, to the pieces of data line output drive signal in liquid crystal panel, can realize the display of this two field picture, makes each sub-pixel in this two field picture all to be different from the gamma electric voltage display of former frame.
The gamma electric voltage exported due to gamma voltage controller in this two frame is different, so each sub-pixel in this two two field picture has different optical brightness curves.When human eye watches this two two field picture at short notice, this two two field picture can be synthesized, the optical brightness curve of each sub-pixel in the image after synthesis is more close to ideal curve, as shown in Figure 3, and its gamma value is closer to 2.2, thus solve the technical matters of large viewing viewing angle color drift, improve the display quality of liquid crystal display.
Although embodiment disclosed in this invention is as above, the embodiment that described content just adopts for the ease of understanding the present invention, and be not used to limit the present invention.Technician in any the technical field of the invention; under the prerequisite not departing from spirit and scope disclosed in this invention; any amendment and change can be done what implement in form and in details; but scope of patent protection of the present invention, the scope that still must define with appending claims is as the criterion.
Claims (10)
1. a driving circuit, comprises time schedule controller, gamma voltage controller and data source integrated circuit;
Described time schedule controller exports different assignment to described gamma voltage controller in adjacent two frames, described gamma voltage controller exports different gamma electric voltages according to described different assignment to described data source integrated circuit in adjacent two frames, makes same sub-pixel obtain different gamma electric voltages in adjacent two frames.
2. driving circuit according to claim 1, is characterized in that, described gamma voltage controller can export n kind gamma electric voltage, is correspondingly provided with n assignment in described time schedule controller;
Wherein, 4≤n≤14.
3. driving circuit according to claim 1, is characterized in that, is provided with register in described time schedule controller, for storing described assignment.
4. driving circuit according to claim 1, is characterized in that, is connected between described time schedule controller with described gamma voltage controller by IC bus.
5. driving circuit according to claim 1, is characterized in that, also comprises recording controller;
Described time schedule controller is to described recording controller output timing signal, and described recording controller is to described data source integrated circuit input data-signal;
Described data source integrated circuit is according to described data-signal and described gamma electric voltage output drive signal.
6. driving circuit according to claim 1, is characterized in that, the refresh rate of described driving circuit is at more than 60Hz.
7. a driving method, comprising:
Time schedule controller exports different assignment to gamma voltage controller in adjacent two frames;
Described gamma voltage controller exports different gamma electric voltages according to described different assignment to data source integrated circuit in adjacent two frames, makes same sub-pixel obtain different gamma electric voltages in adjacent two frames.
8. driving method according to claim 7, is characterized in that, also comprises:
Described time schedule controller is to recording controller output timing signal, and described recording controller is to described data source integrated circuit input data-signal;
Described data source integrated circuit is according to described data-signal and described gamma electric voltage output drive signal.
9. driving method according to claim 7, is characterized in that, described gamma voltage controller can export n kind gamma electric voltage, is correspondingly provided with n assignment in described time schedule controller;
Wherein, 4≤n≤14.
10. driving method according to claim 7, is characterized in that, is provided with register in described time schedule controller, for storing described assignment.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510153052.7A CN104751817B (en) | 2015-04-01 | 2015-04-01 | Drive circuit and driving method |
| PCT/CN2015/076994 WO2016155044A1 (en) | 2015-04-01 | 2015-04-20 | Drive circuit and drive method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510153052.7A CN104751817B (en) | 2015-04-01 | 2015-04-01 | Drive circuit and driving method |
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| Publication Number | Publication Date |
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| CN104751817A true CN104751817A (en) | 2015-07-01 |
| CN104751817B CN104751817B (en) | 2018-01-12 |
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| WO (1) | WO2016155044A1 (en) |
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| WO2017121140A1 (en) * | 2016-01-15 | 2017-07-20 | 合一智能科技（深圳）有限公司 | Display control method and device for liquid crystal display screen |
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| WO2017190426A1 (en) * | 2016-05-04 | 2017-11-09 | 深圳市华星光电技术有限公司 | System for use in in-line adjustment of gamma code of liquid crystal panel |
| WO2018121518A1 (en) * | 2016-12-27 | 2018-07-05 | 惠科股份有限公司 | Liquid crystal display and method for driving same |
| WO2019071697A1 (en) * | 2017-10-10 | 2019-04-18 | 惠科股份有限公司 | Method for driving display panel, and display device |
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| WO2018120535A1 (en) * | 2016-12-27 | 2018-07-05 | 惠科股份有限公司 | Liquid crystal display and method for driving same |
| WO2018121518A1 (en) * | 2016-12-27 | 2018-07-05 | 惠科股份有限公司 | Liquid crystal display and method for driving same |
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| CN114023283B (en) * | 2021-11-29 | 2024-02-09 | 京东方科技集团股份有限公司 | Display driving module, display device and display driving method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016155044A1 (en) | 2016-10-06 |
| CN104751817B (en) | 2018-01-12 |
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