CN103474041B - Driving device, driving method and display device for LCD panel - Google Patents
Driving device, driving method and display device for LCD panel Download PDFInfo
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- CN103474041B CN103474041B CN201310415622.6A CN201310415622A CN103474041B CN 103474041 B CN103474041 B CN 103474041B CN 201310415622 A CN201310415622 A CN 201310415622A CN 103474041 B CN103474041 B CN 103474041B
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- driving force
- driving
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Abstract
The invention provides a driving device, driving method and display device for an LCD panel, and belongs to the field of an LCD technology. The driving device, driving method and display device for the LCD panel can solve the problem that a driving device of an existing LCD panel is high in energy consumption. The driving method for the LCD panel includes the first step of receiving display signal data of images to be displayed; the second step of analyzing the received display signal data and obtaining the highest gray-scale values corresponding to the display signal data through a highest gray-scale value obtaining unit; the third step of obtaining drive ability levels corresponding to the highest gray-scale values of the images to be displayed through a drive ability level obtaining unit; the fourth step of adjusting the drive ability levels to be the drive ability levels corresponding to the highest gray-scale values of the images to be displayed through a drive ability level adjusting unit.
Description
Technical field
The invention belongs to technical field of liquid crystal display is and in particular to a kind of driving means of liquid crystal panel and its driving side
Method, display device.
Background technology
For tft-lcd liquid crystal indicator, it includes display floater, the source drive electrically connecting with display floater
Chip (source driver ic) and grid drive chip (gate driver ic), display floater include square crossing and set
The data wire put and scan line, wherein scan line are connected with grid drive chip, and data wire is connected with source driving chip.When giving
When grid drive chip adds a specific voltage, access scanning signal to display floater, display floater will be shown figure simultaneously
The display signal data of picture inputs to source driving chip by main frame (cpu), and source driving chip is by its internal digital-to-analogue
The display receiving signal data is converted into voltage drive control signal by converting unit, is analyzed by voltage drive control signal
Going out the grey decision-making that will show signal, thus passing through data wire input voltage, image being shown.
The display floater of liquid crystal indicator drives used source driving chip at present is to comprise several drivings in itself
Ability rating, wherein, driving force grade and the grey decision-making wanting display image are that have certain relation (height of the image of display
Grey decision-making corresponds to high driving ability grade, and low grey decision-making corresponds to low driving force grade), only when driving force grade is more than etc.
In this grey decision-making to driving force grade when, image could normally show, but if adopt driving force grade
More than the driving force grade corresponding to the grey decision-making of image that will show hence it is evident that being the waste on a kind of energy.And it is general
Source driving chip manufacturer have selected a kind of driving force grade when burning program (code), also just says in display
During Display panel picture, the either higher image of the grey decision-making or relatively low image of grey decision-making all passes through a kind of this driving force
Grade driving the display of image, when showing the relatively low image display of grey decision-making, using this kind of driving force grade hence it is evident that being
Waste on the energy.
Content of the invention
The technical problem to be solved includes, and the driving means for existing display and driving method exist
The problems referred to above, a kind of liquid that can adjust driving force grade according to the corresponding different highest grey decision-making of different pictures is provided
The driving means of crystal panel and driving method, display device.
Solve present invention problem and be employed technical scheme comprise that a kind of driving method of liquid crystal panel, it includes as follows
Step:
The display signal data of the image that reception will show；
By highest grey decision-making acquiring unit, it is corresponding that the display signal data that analysis receives obtains this display signal data
Highest grey decision-making；
By driving force grade acquiring unit, obtain the driving energy corresponding to highest grey decision-making of the image that will show
Power grade；
By driving force grade adjustment unit, driving force grade is adjusted to the highest GTG of image that will show
The corresponding driving force grade of value.
The driving method of the liquid crystal panel of the present invention can automatically adjust according to the highest grey decision-making of the figure that will show
Its driving force grade, therefore it can be with saving energy consumption.
Preferably, the display signal data of the image that described reception will show is to receive the two field picture that will show
Display signal data.
Preferably, the highest grey decision-making corresponding to display signal data of the image that described acquisition will show, specifically
Including:
The image display signal receiving data is converted into by corresponding voltage drive control letter by D/A conversion unit
Number；
Obtain all grey decision-making of image display signal by voltage drive control signal, and analyze acquirement highest GTG
Value.
Preferably, described driving force grade adjustment unit is realized by adjusting the resistance of resistance adjustment module
The regulation of driving force grade.
Preferably, the difference of the two adjacent driving force grades setting in described driving force grade adjustment unit is as 5%.
Solve present invention problem and be employed technical scheme comprise that a kind of driving means of liquid crystal panel, comprising:
Image display signal data receipt unit, it is used for receiving the display signal data of the image that will show；
Highest grey decision-making acquiring unit, it is used for the display signal data that analysis receives, and obtains this display signal data
Corresponding highest grey decision-making；
Driving force grade acquiring unit, it is used for obtaining the driving corresponding to highest grey decision-making of the image that will show
Ability rating；
Driving force grade adjustment unit, the highest ash of its image for being adjusted to show driving force grade
The corresponding driving force grade of rank value.
It is provided with driving force adjustment unit due in the driving means of the liquid crystal panel of the present invention, it can be according to will show
The highest grey decision-making of the image showing adopts different driving force grades, is driven and display image, and then can save energy
Consumption.
Preferably, described highest grey decision-making acquiring unit, driving force grade acquiring unit and driving force grade
Adjustment unit is arranged in source driving chip；
Described source driving chip connects a plurality of data lines.
Preferably, described liquid crystal panel includes multiple source driving chips, is all provided with each described source driving chip
It is equipped with driving force grade adjustment unit.
Preferably, it is provided with resistance adjustment module in described driving force grade adjustment unit,
Adjust driving force grade by adjusting described resistance adjustment module.
Solve present invention problem and be employed technical scheme comprise that a kind of display device, it includes above-mentioned LCD
The driving means of plate.
Because this display device includes above-mentioned display device, therefore its energy consumption is relatively low.
Brief description
Fig. 1 is the flow chart of the driving method of liquid crystal panel of embodiments of the invention 1；
Fig. 2 is the schematic diagram of the driving means of liquid crystal panel of embodiments of the invention 2.
Specific embodiment
For making those skilled in the art more fully understand technical scheme, below in conjunction with the accompanying drawings and specific embodiment party
Formula is described in further detail to the present invention.
Embodiment 1:
In conjunction with shown in Fig. 1, the present embodiment provides a kind of driving method of liquid crystal panel, and described liquid crystal panel includes: sequential
Controller, source driving chip, it comprises the steps:
The display signal data of the image that will show receiving is input to image and shows by step one, time schedule controller
Signal receiving unit.
Wherein, time schedule controller can be integrated in source driving chip or single time schedule controller and source
The electrical connection of pole driving chip.Preferably, will display image display signal data be a two field picture display signal data.
Step 2, by the D/A conversion unit in highest grey decision-making acquiring unit by the display receiving signal data
(analog quantity) is converted into voltage control signal (digital quantity), and, it can achieve 256 different ashes taking 8 D/A conversion units as a example
The corresponding voltage control signal of rank value, analysis obtains the highest grey decision-making in the two field picture that will show.
Step 3, driving force grade acquiring unit are stored with the corresponding relation of different grey decision-making and driving force grade,
By driving force grade acquiring unit, obtain the driving force grade corresponding to highest grey decision-making of the image that will show.
As shown in table 1, the difference of the two adjacent driving force grades setting in preferably described driving force grade adjustment unit as 5%, so
Can ensure that the energy consumption of liquid crystal panel reduces as far as possible.Certainly the two adjacent drives setting in also described driving force grade adjustment unit
The difference of kinetic force grade is 10%, 20% etc., now equally can reduce the conversion of the driving force grade of liquid crystal panel, equally
The energy consumption of liquid crystal panel can be reduced accordingly.
Table 1 is the mapping table of driving force grade and grey decision-making:
Table 1
Step 4, by adjust driving force grade adjustment unit in setting resistance adjustment module change driving force
Grade, driving force grade is adjusted to the driving force grade corresponding to highest grey decision-making of image that will show.
Specifically, according to formula: i=u/r, keep u(driving voltage) it is constant that (driving voltage is to export to liquid crystal, no
Can change, otherwise grey decision-making can show exception), by adjusting the resistance of resistance adjustment module in driving force grade adjustment unit
The quiescent current to adjust driving force adjustment unit internal circuit for the resistance, reach the purpose adjusting driving force grade.Lift
Example explanation, if the highest grey decision-making corresponding to a two field picture just having shown is 178, its corresponding driving force grade is
75%, the highest grey decision-making corresponding to a two field picture that will show is 145, and its corresponding driving force driving grade is
65%, now will adjusting the resistance (resistance is tuned up) of resistive module, thus controlling quiescent current, and then changing driving
Ability rating, with 65% driving force grade output, reaches the purpose of saving energy consumption.
Step 5, by display unit, image is shown.
The driving method of the liquid crystal panel that the present embodiment provides, wherein driving force adjustment unit, according to different grey decision-making
Using different driving force grades, and then reach the effect of saving energy consumption.
Embodiment 2:
In conjunction with shown in Fig. 2, the present embodiment provides a kind of driving means of liquid crystal panel, comprising:
Image display signal data receipt unit, it is used for receiving the display signal data of the image that will show.Specifically
Say and be, receive the clock pulse signal of time schedule controller output, as the display signal data of the image that will show.
Highest grey decision-making acquiring unit, it is used for the display signal data that analysis receives, and obtains this display signal correspondence
Highest grey decision-making.
Wherein, it is provided with D/A conversion unit in described highest grey decision-making acquiring unit, described D/A conversion unit, its use
In the image display signal receiving data is converted to voltage drive control signal, and analyze right with voltage control signal institute
The highest grey decision-making answered.
Driving force grade acquiring unit, the driving force that is stored with driving force acquiring unit grade and grey decision-making
Corresponding relation, and then obtain the driving force grade corresponding to highest grey decision-making of the image that will show.
Driving force grade adjustment unit, the highest ash of its image for being adjusted to show driving force grade
The corresponding driving force grade of rank value.It is provided with resistance adjustment module, by adjusting in described driving force grade adjustment unit
Save the regulation to realize driving force grade for the resistance of the resistance of described resistance adjustment module.
Finally by display unit display image.
Wherein, preferably described highest grey decision-making acquiring unit, driving force grade acquiring unit and driving force grade
Adjustment unit is arranged in source driving chip, therefore the structure of the driving means of its liquid crystal panel is simpler.And sequential
Control can be a single module it is also possible to be integrated in source driving chip.
Preferably, the driving means of described liquid crystal panel include multiple source driving chips, each described source drive core
Piece is connected with display floater by a plurality of data lines, is wherein provided with single driving in each described source driving chip
Ability rating adjustment unit, so that the regulation of driving force grade is more accurate, can preferably be realized reducing the image of power consumption
Display.
Liquid crystal panel is provided in the driving method of the driving means of the liquid crystal panel that the present embodiment is provided and embodiment 1
Driving method is substantially identical, and here is just not repeated to relate.
The driving means of the liquid crystal panel that the present embodiment provides, including driving force adjustment unit, according to different ashes
Rank value is using different driving force grades, and then reaches the effect of saving energy consumption.
Embodiment 3
The present embodiment provides a kind of display device, and it includes the driving means of the liquid crystal panel described in embodiment 2.This display
Device can be: mobile phone, panel computer, television set, display, notebook computer, DPF, navigator etc. be any have aobvious
Show product or the part of function.
There are in the display device of the present embodiment the driving means of the liquid crystal panel in embodiment 2, therefore its energy consumption is relatively low.
Certainly, other conventional structures can also be included in the display device of the present embodiment, such as power subsystem, display drives list
Unit etc..
It is understood that the embodiment of above principle being intended to be merely illustrative of the present and the exemplary enforcement adopting
Mode, but the invention is not limited in this.For those skilled in the art, in the essence without departing from the present invention
In the case of god and essence, various modifications and improvement can be made, these modifications and improvement are also considered as protection scope of the present invention.
Claims (8)
1. a kind of driving method of liquid crystal panel is it is characterised in that comprise the steps:
The display signal data of the image that reception will show；
By highest grey decision-making acquiring unit, the display signal data that analysis receives obtains this corresponding highest of display signal data
Grey decision-making；
By driving force grade acquiring unit, obtain driving force corresponding to highest grey decision-making of image that will show etc.
Level；
By adjusting the quiescent current of driving force grade adjustment unit, thus driving force grade is adjusted to show
The driving force grade corresponding to highest grey decision-making of image, described driving force grade adjustment unit is passed through to adjust resistive module
To adjust driving force grade, and to keep driving voltage constant.
2. the driving method of liquid crystal panel according to claim 1 is it is characterised in that the image that will show of described reception
Display signal data be to receive the display signal data of a two field picture that will show.
3. the driving method of liquid crystal panel according to claim 1 is it is characterised in that the image that will show of described acquisition
Display signal data corresponding to highest grey decision-making, specifically include:
The image display signal receiving data is converted into by corresponding voltage drive control signal by D/A conversion unit；
Obtain all grey decision-making of image display signal by voltage drive control signal, and analyze acquirement highest grey decision-making.
4. the driving method of liquid crystal panel according to claim 1 is it is characterised in that described driving force grade adjusts list
The difference of two adjacent driving force grades setting in unit is as 5%.
5. a kind of driving means of liquid crystal panel are it is characterised in that include:
Image display signal data receipt unit, it is used for receiving the display signal data of the image that will show；
Highest grey decision-making acquiring unit, it is used for the display signal data that analysis receives, and it is corresponding to obtain this display signal
High gray value；
Driving force grade acquiring unit, it is used for obtaining the driving force corresponding to highest grey decision-making of the image that will show
Grade；
Driving force grade adjustment unit, by adjusting the quiescent current of described driving force grade adjustment unit internal circuit,
Thus driving force grade is adjusted to the driving force grade corresponding to highest grey decision-making of image that will show；Described drive
It is provided with resistance adjustment module, by adjusting the resistance of described resistance adjustment module Lai real in kinetic force grade adjustment unit
The regulation of existing driving force grade, and keep driving voltage constant.
6. the driving means of liquid crystal panel according to claim 5 are it is characterised in that described highest grey decision-making obtains list
Unit, driving force grade acquiring unit and driving force grade adjustment unit are arranged in source driving chip；
Described source driving chip connects a plurality of data lines.
7. the driving means of liquid crystal panel according to claim 5 are it is characterised in that described liquid crystal panel includes multiple sources
Pole driving chip, is provided with driving force grade adjustment unit in each described source driving chip.
8. a kind of display device is it is characterised in that include the driving means of the liquid crystal panel described in any one of claim 5-7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310415622.6A CN103474041B (en) | 2013-09-12 | 2013-09-12 | Driving device, driving method and display device for LCD panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310415622.6A CN103474041B (en) | 2013-09-12 | 2013-09-12 | Driving device, driving method and display device for LCD panel |
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| CN103474041A CN103474041A (en) | 2013-12-25 |
| CN103474041B true CN103474041B (en) | 2017-01-18 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104200785B (en) * | 2014-07-31 | 2016-08-17 | 京东方科技集团股份有限公司 | Method of supplying power to, device and the display device of a kind of display floater source electrode driver |
| CN104934007A (en) * | 2015-07-06 | 2015-09-23 | 合肥京东方光电科技有限公司 | Data line driving method and unit, source electrode driver, panel driving apparatus and display apparatus |
| CN105118437B (en) | 2015-09-21 | 2018-04-10 | 京东方科技集团股份有限公司 | A kind of display drive method, device and display device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102629454A (en) * | 2011-06-16 | 2012-08-08 | 北京京东方光电科技有限公司 | Driver circuit of liquid crystal panel and method and system for driving liquid crystal display panel |
| CN103165066A (en) * | 2011-12-13 | 2013-06-19 | 乐金显示有限公司 | Display device and drive method for the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4437378B2 (en) * | 2001-06-07 | 2010-03-24 | 株式会社日立製作所 | Liquid crystal drive device |
| JP5395328B2 (en) * | 2007-01-22 | 2014-01-22 | 株式会社ジャパンディスプレイ | Display device |
| CN102414732B (en) * | 2009-11-12 | 2015-05-06 | 松下电器产业株式会社 | Drive voltage generation circuit |
| EP2458581B1 (en) * | 2010-11-29 | 2017-02-15 | Optrex Corporation | Drive device for liquid crystal display panel |
| KR101883925B1 (en) * | 2011-04-08 | 2018-08-02 | 삼성디스플레이 주식회사 | Organic Light Emitting Display Device and Driving Method Thereof |
| TWI473062B (en) * | 2013-01-22 | 2015-02-11 | Au Optronics Corp | Organic light emitting diode display device and driving method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102629454A (en) * | 2011-06-16 | 2012-08-08 | 北京京东方光电科技有限公司 | Driver circuit of liquid crystal panel and method and system for driving liquid crystal display panel |
| CN103165066A (en) * | 2011-12-13 | 2013-06-19 | 乐金显示有限公司 | Display device and drive method for the same |
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Granted publication date: 20170118 Termination date: 20210912 |