CN104751817B - Drive circuit and driving method - Google Patents
Drive circuit and driving method Download PDFInfo
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- CN104751817B CN104751817B CN201510153052.7A CN201510153052A CN104751817B CN 104751817 B CN104751817 B CN 104751817B CN 201510153052 A CN201510153052 A CN 201510153052A CN 104751817 B CN104751817 B CN 104751817B
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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
-
- 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)
- Nonlinear Science (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer 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 kind of drive circuit and driving method, belong to display technology field, solve the technical problem that existing liquid crystal display has big viewing viewing angle color drift.The drive circuit includes time schedule controller, gamma voltage controller and data source integrated circuit；The time schedule controller exports different assignment in adjacent two frame to the gamma voltage controller, the gamma voltage controller exports different gamma electric voltages to the data source integrated circuit in adjacent two frame according to the different assignment, same sub-pixel is obtained different gamma electric voltages in adjacent two frame.The present invention can be used for the display devices such as LCD TV, liquid crystal display, mobile phone, tablet personal computer.
Description
Technical field
The present invention relates to display technology field, specifically, is related to a kind of drive circuit and driving method.
Background technology
With the development of Display Technique, liquid crystal display has become most commonly seen display device.
When watching the image that liquid crystal display is shown, if viewing visual angle becomes big, face just occurs in the image watched
The phenomenon of color drift (color shift).Viewing visual angle is bigger, and the phenomenon of color drift is more serious.Fig. 1 regards for different viewings
The correlation curve of input GTG and brightness under angle, wherein transverse axis represent GTG, and 256 GTGs are shared in this example, and the longitudinal axis represents
Relative luminance.From figure 1 it appears that when viewing visual angle is 0 ° (during the viewing of front), correlation curve is more smooth, 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 is
Through generating sizable deviation, its gamma value is also varied widely.
Therefore, there is the technical problem of big viewing viewing angle color drift in existing liquid crystal display, and viewing visual angle is got over
Greatly, the phenomenon of color drift is more serious.
The content of the invention
It is an object of the invention to provide a kind of drive circuit and driving method, exists to solve existing liquid crystal display
The technical problem of big viewing viewing angle color drift.
The present invention provides a kind of drive circuit, including time schedule controller, gamma voltage controller and data source integrated circuit；
The time schedule controller exports different assignment, the gamma in adjacent two frame to the gamma voltage controller
Voltage controller exports different gamma electricity to the data source integrated circuit in adjacent two frame according to the different assignment
Pressure, makes same sub-pixel obtain different gamma electric voltages in adjacent two frame.
Preferably, the gamma voltage controller can export n kind gamma electric voltages, accordingly be set in the time schedule controller
It is equipped with n assignment.Wherein, 4≤n≤14.
It is further to be provided with register in the time schedule controller, for storing the assignment.
Preferably, connected between the time schedule controller and the gamma voltage controller by IC bus.
It is further that the drive circuit also includes recording controller；
The time schedule controller is to the recording controller output timing signal, and the recording controller is to the data source
Integrated circuit inputs data-signal；
The data source integrated circuit is according to the data-signal and the gamma electric voltage output drive signal.
Preferably, the refresh rate of the drive circuit is in more than 60Hz.
The present invention also provides a kind of driving method, including：
Time schedule controller exports different assignment in adjacent two frame to gamma voltage controller；
The gamma voltage controller exports in adjacent two frame according to the different assignment to data source integrated circuit
Different gamma electric voltages, same sub-pixel is set to obtain different gamma electric voltages in adjacent two frame.
It is further that the driving method also includes：
The time schedule controller integrates to recording controller output timing signal, the recording controller to the data source
Circuit input data signal；
The data source integrated circuit is according to the data-signal and the gamma electric voltage output drive signal.
Preferably, the gamma voltage controller can export n kind gamma electric voltages, accordingly be set in the time schedule controller
It is equipped with n assignment；
Wherein, 4≤n≤14.
It is further to be provided with register in the time schedule controller, for storing the assignment.
Present invention offers following beneficial effect：Drive circuit and driving method provided by the invention can be applied to liquid crystal
Show in device.In the two continuous frames image shown by liquid crystal display, time schedule controller exports different to gamma voltage controller
Assignment, gamma voltage controller is exported different gamma electric voltage to data source integrated circuit, make same sub-pixel adjacent
Different gamma electric voltages is obtained in two frames.So, each sub-pixel in this two field pictures just each has different optics bright
Write music line, when human eye watches this two field pictures in a short time, this two field pictures can be synthesized, the image after synthesis
In each sub-pixel there is comparatively ideal optical brightness curve, and its gamma value is closer to 2.2, so as to solve grand sight
See the technical problem of viewing angle color drift.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages can be by specification, rights
Specifically noted structure is realized and obtained in claim and accompanying drawing.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, required in being described below to embodiment
Accompanying drawing does simple introduction：
Fig. 1 is that the correlation curve of input GTG and brightness of the existing liquid crystal display under different viewing visual angles is illustrated
Figure；
Fig. 2 is the schematic diagram of drive circuit provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram for the optical brightness curve that drive circuit provided in an embodiment of the present invention is reached；
Fig. 4 is the flow chart of driving method provided in an embodiment of the present invention.
Embodiment
Embodiments of the present invention are described in detail below with reference to drawings and Examples, and how the present invention is applied whereby
Technological means solves technical problem, and the implementation process for reaching technique effect can fully understand and implement according to this.Need to illustrate
As long as not forming conflict, each embodiment in the present invention and each feature in each embodiment can be combined with each other,
The technical scheme formed is within protection scope of the present invention.
The embodiment of the present invention provides a kind of drive circuit, including time schedule controller, gamma voltage controller and data source collection
Into circuit.Time schedule controller exports different assignment in adjacent two frame to gamma voltage controller, and gamma voltage controller exists
Different gamma electric voltages is exported to data source integrated circuit according to different assignment in adjacent two frame, makes same sub-pixel adjacent
Different gamma electric voltages is obtained in two frames.
Drive circuit provided in an embodiment of the present invention can be applied in liquid crystal display.In the company shown by liquid crystal display
In continuous two field pictures, time schedule controller exports different assignment to gamma voltage controller, makes gamma voltage controller to data
Source integrated circuit exports different gamma electric voltages, same sub-pixel is obtained different gamma electric voltages in adjacent two frame.So,
Each sub-pixel in this two field pictures just each has a different optical brightness curves, human eye watch in a short time this two
During two field picture, this two field pictures can be synthesized, each sub-pixel in the image after synthesis has comparatively ideal optics
Brightness curve, and its gamma value is closer to 2.2, so as to solve the technical problem of big viewing viewing angle color drift.
Embodiment one：
As shown in Fig. 2 drive circuit provided in an embodiment of the present invention include time schedule controller (Timing Controller,
Abbreviation T-CON), gamma voltage controller and data source integrated circuit (Data IC), wherein gamma voltage controller can use
Gamma electric voltage may be programmed integrated manipulator (P-gamma IC).
Time schedule controller exports different assignment in adjacent two frame to gamma voltage controller, and gamma voltage controller exists
Different gamma electric voltages is exported to data source integrated circuit according to different assignment in adjacent two frame.It is further the present invention
In the drive circuit that embodiment provides, in addition to the recording controller being arranged in time schedule controller, time schedule controller is to data
Controller output timing signal, recording controller input data-signal to data source integrated circuit, then data source integrated circuit
According to data-signal and gamma electric voltage, the pieces of data line output drive signal into liquid crystal panel.
As a preferred scheme, pass through IC bus between time schedule controller and gamma voltage controller
(Inter-Integrated Circuit, abbreviation IIC) is connected.IC bus is minimum using signal wire in various buses
, and with functions such as automatic addressing, the synchronization of more host clocks and arbitrations.Therefore, in the driving circuit using integrated circuit
Bus has the advantages that convenient, flexible, small volume.
In the present embodiment, gamma voltage controller can export n kind gamma electric voltages, and n is correspondingly provided with time schedule controller
Individual assignment, n value is generally between 4 to 14.In the present embodiment by taking n=10 as an example, posted in addition, being additionally provided with time schedule controller
Storage (register), for storing 10 assignment.
The course of work of drive circuit provided in an embodiment of the present invention is as follows：
Two P-gamma programs are included in the program of time schedule controller, and two P-gamma programs are corresponded in register not
Same assignment.
In the first frame, time schedule controller obtains a suitable assignment by one of P-gamma programs, and to gal
Horse voltage controller exports, and gamma voltage controller exports corresponding gamma electric voltage according to the assignment to data source integrated circuit.
Meanwhile time schedule controller, also to recording controller output timing signal, then recording controller inputs to data source integrated circuit
Data-signal.Data source integrated circuit can is according to data-signal and gamma electric voltage, the pieces of data line into liquid crystal panel
Output drive signal, the display of the two field picture is realized, each sub-pixel in this two field picture is shown with the gamma electric voltage.
In the second frame, time schedule controller obtains another assignment by another P-gamma program, and to gamma electric voltage control
Device output processed, gamma voltage controller are different from the gamma of former frame according to the assignment accordingly to the output of data source integrated circuit
Voltage.Meanwhile time schedule controller is also to recording controller output timing signal, then recording controller is to data source integrated circuit
Input data signal.Data source integrated circuit can is according to data-signal and gamma electric voltage, each bar number into liquid crystal panel
According to line output drive signal, the display of the two field picture is realized, makes each sub-pixel in this two field picture with different from previous
The gamma electric voltage of frame is shown.
Because the gamma electric voltage that gamma voltage controller exports in this two frame is different, so each in this two field pictures
Sub-pixel has different optical brightness curves., can be by this two frames figure when human eye watches this two field pictures in a short time
As being synthesized, the optical brightness curve of each sub-pixel in the image after synthesis is more nearly ideal curve, such as Fig. 3 institutes
Show, and its gamma value, so as to solve the technical problem of big viewing viewing angle color drift, improves liquid crystal closer to 2.2
The display quality of display.
Preferably, the refresh rate of drive circuit provided in an embodiment of the present invention is in more than 60Hz.Human eye is to continuous two
When two field picture is synthesized, the time interval of two field pictures is shorter, and synthetic effect is also better, so the refreshing of liquid crystal display
Rate is higher, it becomes possible to the technical problem of the big viewing viewing angle color drift of better solution.
By being improved to time schedule controller, realize improves technical scheme provided in an embodiment of the present invention from the time
The technical problem of color drift.Technical scheme (the pixel point from spatially improvement color drift more compared to application at present
Area's technology), technical scheme provided in an embodiment of the present invention has advantages below：Many scannings need not be increased in liquid crystal panel
The circuit structures such as line, data wire, thin film transistor (TFT), so the aperture opening ratio and transmitance of liquid crystal panel will not be reduced, and due to
Circuit structure is more simple, so as to reduce the complexity of manufacturing process and production cost.
Embodiment two：
The embodiment of the present invention also provides a kind of driving method, available for liquid crystal displays such as LCD TV, mobile phone, tablet personal computers
In device.As shown in figure 4, the driving method includes：
S11：Time schedule controller exports different assignment in adjacent two frame to gamma voltage controller.
S12：Gamma voltage controller exports difference according to different assignment in adjacent two frame to data source integrated circuit
Gamma electric voltage, same sub-pixel is obtained different gamma electric voltages in adjacent two frame.
It is further that the driving method also includes：
S2：Time schedule controller inputs to recording controller output timing signal, recording controller to data source integrated circuit
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 voltages, and n is correspondingly provided with time schedule controller
Individual assignment, n value is generally between 4 to 14.In the present embodiment by taking n=10 as an example, posted in addition, being additionally provided with time schedule controller
Storage, for storing 10 assignment.
In the present embodiment, two P-gamma programs, and two P-gamma programs pair are included in the program of time schedule controller
Answer assignment different in register.
In the first frame, time schedule controller obtains a suitable assignment by one of P-gamma programs, and to gal
Horse voltage controller exports, and gamma voltage controller exports corresponding gamma electric voltage according to the assignment to data source integrated circuit.
Meanwhile time schedule controller, also to recording controller output timing signal, then recording controller inputs to data source integrated circuit
Data-signal.Data source integrated circuit can is according to data-signal and gamma electric voltage, the pieces of data line into liquid crystal panel
Output drive signal, the display of the two field picture is realized, each sub-pixel in this two field picture is shown with the gamma electric voltage.
In the second frame, time schedule controller obtains another assignment by another P-gamma program, and to gamma electric voltage control
Device output processed, gamma voltage controller are different from the gamma of former frame according to the assignment accordingly to the output of data source integrated circuit
Voltage.Meanwhile time schedule controller is also to recording controller output timing signal, then recording controller is to data source integrated circuit
Input data signal.Data source integrated circuit can is according to data-signal and gamma electric voltage, each bar number into liquid crystal panel
According to line output drive signal, the display of the two field picture is realized, makes each sub-pixel in this two field picture with different from previous
The gamma electric voltage of frame is shown.
Because the gamma electric voltage that gamma voltage controller exports in this two frame is different, so each in this two field pictures
Sub-pixel has different optical brightness curves., can be by this two frames figure when human eye watches this two field pictures in a short time
As being synthesized, the optical brightness curve of each sub-pixel in the image after synthesis is more nearly ideal curve, such as Fig. 3 institutes
Show, and its gamma value, so as to solve the technical problem of big viewing viewing angle color drift, improves liquid crystal closer to 2.2
The display quality of display.
While it is disclosed that embodiment as above, but described content only to facilitate understand the present invention and adopt
Embodiment, it is not limited to the present invention.Any those skilled in the art to which this invention pertains, this is not being departed from
On the premise of the disclosed spirit and scope of invention, any modification and change can be made in the implementing form and in details,
But the scope of patent protection of the present invention, still should be subject to the scope of the claims as defined in the appended claims.
Claims (6)
1. a kind of drive circuit, including time schedule controller, gamma voltage controller and data source integrated circuit；
The time schedule controller exports different assignment, the gamma electric voltage in adjacent two frame to the gamma voltage controller
Controller exports different gamma electric voltages to the data source integrated circuit in adjacent two frame according to the different assignment, makes
Same sub-pixel obtains different gamma electric voltages in adjacent two frame；
Also include recording controller；
The time schedule controller integrates to the recording controller output timing signal, the recording controller to the data source
Circuit input data signal；
The data source integrated circuit is according to the data-signal and the gamma electric voltage output drive signal；
The gamma voltage controller can export n kind gamma electric voltages, and n assignment is correspondingly provided with the time schedule controller；
Wherein, 4≤n≤14.
2. drive circuit according to claim 1, it is characterised in that register is provided with the time schedule controller, is used
In the storage assignment.
3. drive circuit according to claim 1, it is characterised in that the time schedule controller controls with the gamma electric voltage
Connected between device by IC bus.
4. drive circuit according to claim 1, it is characterised in that the refresh rate of the drive circuit is in more than 60Hz.
5. a kind of driving method, including：
Time schedule controller exports different assignment in adjacent two frame to gamma voltage controller；
The gamma voltage controller exports difference according to the different assignment in adjacent two frame to data source integrated circuit
Gamma electric voltage, same sub-pixel is obtained different gamma electric voltages in adjacent two frame；
The time schedule controller is to recording controller output timing signal, and the recording controller is to the data source integrated circuit
Input data signal；
The data source integrated circuit is according to the data-signal and the gamma electric voltage output drive signal；
The gamma voltage controller can export n kind gamma electric voltages, and n assignment is correspondingly provided with the time schedule controller；
Wherein, 4≤n≤14.
6. driving method according to claim 5, it is characterised in that register is provided with the time schedule controller, is used
In the storage 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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| CN104751817A CN104751817A (en) | 2015-07-01 |
| CN104751817B true CN104751817B (en) | 2018-01-12 |
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| CN (1) | CN104751817B (en) |
| WO (1) | WO2016155044A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105528999B (en) * | 2016-01-15 | 2018-05-08 | 合一智能科技（深圳）有限公司 | The display control method and device of liquid crystal display |
| CN105741805B (en) * | 2016-04-19 | 2019-03-19 | 深圳市华星光电技术有限公司 | The drive system and driving method of liquid crystal display, liquid crystal display |
| CN105761692B (en) * | 2016-05-04 | 2018-08-14 | 深圳市华星光电技术有限公司 | The system that gamma for on-line tuning liquid crystal display panel encodes |
| CN105895044B (en) * | 2016-06-07 | 2019-02-26 | 深圳市华星光电技术有限公司 | The method of the big visual angle colour cast of liquid crystal display and improvement liquid crystal display |
| CN106531106B (en) * | 2016-12-27 | 2017-11-10 | 惠科股份有限公司 | Liquid crystal display and driving method thereof |
| CN107808649B (en) * | 2017-10-10 | 2019-07-12 | 惠科股份有限公司 | Display panel driving method and display device |
| 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 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1737897A (en) * | 2004-08-20 | 2006-02-22 | 三星电子株式会社 | Display device and drive unit thereof and driving method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100701089B1 (en) * | 2004-11-12 | 2007-03-29 | 비오이 하이디스 테크놀로지 주식회사 | Method of realizing gray level of LCD |
| KR101433108B1 (en) * | 2007-12-21 | 2014-08-22 | 엘지디스플레이 주식회사 | AMOLED and driving method thereof |
| KR101432513B1 (en) * | 2008-04-22 | 2014-08-21 | 삼성디스플레이 주식회사 | Method for driving a display panel, and display apparatus performing for the method |
| KR101521519B1 (en) * | 2008-07-11 | 2015-05-20 | 삼성디스플레이 주식회사 | Methode for driving a display panel and display apparatus for performing the method |
| CN102044221B (en) * | 2009-10-13 | 2012-11-14 | 联咏科技股份有限公司 | Driving circuit of liquid crystal display |
| CN102347005A (en) * | 2010-07-30 | 2012-02-08 | 奇美电子股份有限公司 | Image adjusting method and device |
| CN102237066A (en) * | 2011-08-18 | 2011-11-09 | 青岛海信电器股份有限公司 | Liquid crystal display and method for improving contrast ratio of image |
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- 2015-04-01 CN CN201510153052.7A patent/CN104751817B/en active Active
- 2015-04-20 WO PCT/CN2015/076994 patent/WO2016155044A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1737897A (en) * | 2004-08-20 | 2006-02-22 | 三星电子株式会社 | Display device and drive unit thereof and driving method |
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| WO2016155044A1 (en) | 2016-10-06 |
| CN104751817A (en) | 2015-07-01 |
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