CN102654988A - Liquid crystal display drive circuit, liquid crystal display zone and drive method of liquid crystal display - Google Patents
Liquid crystal display drive circuit, liquid crystal display zone and drive method of liquid crystal display Download PDFInfo
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- CN102654988A CN102654988A CN2012100809873A CN201210080987A CN102654988A CN 102654988 A CN102654988 A CN 102654988A CN 2012100809873 A CN2012100809873 A CN 2012100809873A CN 201210080987 A CN201210080987 A CN 201210080987A CN 102654988 A CN102654988 A CN 102654988A
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- public electrode
- liquid crystal
- crystal display
- drive circuit
- electrode bar
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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
- G09G3/3614—Control of polarity reversal in general
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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
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0421—Structural details of the set of electrodes
- G09G2300/0426—Layout of electrodes and connections
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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
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a liquid crystal display drive circuit, a liquid crystal display zone and a drive method of a liquid crystal display, and relates to the technical field of liquid crystal displays. The liquid crystal display drive circuit comprises a pixel electrode matrix, multiple public electrode strips and a public electrode drive circuit connected therewith, wherein the pixel electrode matrix consists of multiple pixel electrodes arranged in a matrix manner; each public electrode strip corresponds to at least one group of pixel electrodes with the same sum of m and n, the orthographic projection of each pixel electrode on the plane of corresponding public electrode strip is located in the public electrode strip, and m and n represent the row number and column number of the pixel electrode in the pixel electrode matrix respectively; the public electrode drive circuit controls the electric potential of each public electrode strip to be different from that of the adjacent public electrode strip; and the electric potential of each public electrode strip changes once when each frame of image is displayed, and two kinds of electric potential exist. According to the invention, point inversion is realized, the range of the electric potential output by source drive is narrowed, thus the power consumption of the source drive is reduced, and the image quality is guaranteed.
Description
Technical field
The present invention relates to the LCD Technology field, relate in particular to a kind of counter-rotating and public electrode potential change mode liquid crystal display drive circuit, Liquid Crystal Display And Method For Driving of combining put.
Background technology
Traditional LCD comprises the liquid crystal of filling between array base palte, color membrane substrates and two substrates; Also comprise pixel electrode and public (Common) electrode; Pixel electrode is arranged on the array base palte; Public electrode is arranged on array base palte and/or the color membrane substrates, and liquid crystal molecule deflects because of the electric field between pixel electrode and the public electrode.Characteristic for fear of liquid crystal molecule is destroyed, liquid crystal molecule can not be fixed on always some turn to constant.Pixel electrode and the voltage between the public electrode in the LCD just are divided into two kinds of polarity, and one is positive polarity, and one is negative polarity.When the current potential of pixel electrode is higher than the public electrode current potential, be referred to as positive polarity, otherwise, be negative polarity.No matter be positive polarity or negative polarity, the GTG of one group of identical brightness can be arranged all.So when the pressure reduction absolute value between pixel electrode and the public electrode is fixedly the time; No matter be that pixel electrode current potential height or public electrode current potential are high; The GTG that is showed is to touch equally; And the switched in opposite of liquid crystal molecule is fixed on the characteristic that direction a caused destruction thereby avoid liquid crystal molecule to turn to always.
Usually, liquid crystal panel mainly has the mapping mode of four kinds of opposed polarities, frame counter-rotating (frame inversion), row counter-rotating (row inversion), row counter-rotatings (column inversion) and some counter-rotating (dot inversion).The type of drive of corresponding public electrode comprises two kinds: fixed and change.What these two kinds of different type of drive had the greatest impact is exactly the use of source drive (Source driver).As shown in fig. 1 (wherein; The current potential of public electrode when solid line is represented positive polarity; The current potential of public electrode when dotted line is represented negative polarity); With the penetrance of different common potential type of drive, when the current potential of public electrode is to be fixed as 5V constant the time, the operating potential scope that source drive provided will arrive more than the 10V.
Along with extensively quoting of mobile device, harsher requirement has been proposed for the power consumption of its display screen and image quality.Display screen panel reversal mode commonly used is most of for the some counter-rotating, because its display quality is well a lot of with respect to other panel reversal mode, but because when using the some counter-rotating, the power consumption of source drive is big, causes the overall power of panel big.The type of drive of traditional public electrode potential change can only be applicable to frame counter-rotating and row counter-rotating, though low in energy consumption, display effect is relatively poor.
Summary of the invention
The technical matters that (one) will solve
The technical matters that the present invention will solve is: provide a kind of low in energy consumption, and good liquid crystal display drive circuit, the Liquid Crystal Display And Method For Driving of display effect.
(2) technical scheme
For addressing the above problem; The invention provides a kind of liquid crystal display drive circuit; Comprise by a plurality of pixel electrode matrix, a plurality of public electrode bar that rectangular pixel electrodes arranged forms and common electrode driving circuits that link to each other with said public electrode bar of being; The corresponding at least one group of m of each said public electrode bar and n and identical pixel electrode; The orthogonal projection of each said pixel electrode on plane, corresponding public electrode bar place is positioned at this public electrode bar, and said m and n are respectively said pixel electrode residing line number and columns in pixel electrode matrix; The current potential of each said public electrode bar of said common electrode driving circuit control is different with the current potential of adjacent public electrode bar, and the current potential of each said public electrode bar when every demonstration one frame picture change once, said current potential has two kinds.
Preferably, each said public electrode bar comprises at least one public electrode.
Preferably, all current potentials keep identical public electrode bar to be electrically connected.
Preferably, said current potential comprises 0V and 5V.
Preferably, said pixel electrode and said public electrode bar are tin indium oxide ITO electrode.
The present invention also provides a kind of LCD, comprises above-mentioned liquid crystal display drive circuit.
The present invention also provides a kind of driving method of above-mentioned LCD, constantly imports first common potential and second common potential respectively to adjacent public electrode bar first; Second is that the public electrode bar of first common potential is imported second common potential to current potential constantly, is that the public electrode bar of second common potential is imported first common potential to current potential.
Preferably, said first common potential is 0V, and second common potential is 5V; Or said first common potential is 5V, and second common potential is 0V.
(3) beneficial effect
The present invention realizes the reversal of poles of liquid crystal drive voltage through the switching of the current potential on the adjacent public electrode bar of control, makes the output potential of source drive in the scope between two kinds of current potentials of public electrode bar, to change.Owing to adopted this structure, both realized some counter-rotating, reduced the potential range of source drive output again, make the power consumption of source drive reduce, guaranteed image quality simultaneously again.
Description of drawings
Fig. 1 is in traditional LCD, the penetrance under the changeless type of drive of public electrode current potential;
Fig. 2 is the structure intention according to the liquid crystal display drive circuit of one embodiment of the present invention;
Fig. 3 is the structure intention according to the liquid crystal display drive circuit of another embodiment of the present invention;
Fig. 4 is in liquid crystal display drive circuit of the present invention, the penetrance under the type of drive of public electrode potential change;
Fig. 5 is the potential change synoptic diagram that comprises source drive in the LCD of liquid crystal display drive circuit shown in Figure 3.
Embodiment
Liquid crystal display drive circuit, Liquid Crystal Display And Method For Driving that the present invention proposes specify as follows in conjunction with accompanying drawing and embodiment.
Comprise according to the liquid crystal display drive circuit of a kind of embodiment of the present invention: by a plurality of pixel electrode matrix, a plurality of public electrode bar that rectangular pixel electrodes arranged forms and common electrode driving circuits that link to each other with the public electrode bar of being; The corresponding at least one group of m of each public electrode bar and n and identical pixel electrode; The orthogonal projection of each pixel electrode on plane, corresponding public electrode bar place is positioned at this public electrode bar, and m and n are respectively pixel electrode residing line number and columns in pixel electrode matrix.Current potential through each public electrode bar of common electrode driving circuit control is different with the current potential of adjacent public electrode bar, and the current potential of each public electrode bar when every demonstration one frame picture change once, this current potential has two kinds, is preferably 0V and 5V.
In liquid crystal display drive circuit of the present invention, each public electrode bar can comprise at least one public electrode, and all current potentials keep identical public electrode bar to be electrically connected.
In liquid crystal display drive circuit as shown in Figure 2; The corresponding one group of m of each public electrode bar and n and identical pixel electrode; And the quantity of the public electrode that each public electrode bar is included is identical with the quantity of the pairing pixel electrode of this public electrode bar, and public electrode and pixel electrode are one by one over against setting.Public electrode 1-1 over against the pixel electrode (not shown) m and n's and be 13; Public electrode 1-2 over against the pixel electrode (not shown) m and n be 13 also; By that analogy; The m of pairing each pixel electrode of public electrode on the oblique line 2-1 and n be 13, all public electrodes on the oblique line 2-1 electrically connect as a public electrode bar.Public electrode on the oblique line 2-2 is electrically connected and forms a public electrode bar, and the public electrode on the oblique line 2-3 electrically connects as a public electrode bar.The orthogonal projection of each pixel electrode on plane, corresponding public electrode bar place is positioned at this public electrode bar.With "+" number and "-" number respectively positive polarity and the negative polarity of voltage between remarked pixel electrode and the corresponding public electrode.The current potential of adjacent two public electrode bars is different arbitrarily; Make that the polarity of voltage is opposite between pixel electrode and the corresponding public electrode on adjacent two oblique lines arbitrarily; Control through common electrode driving circuit; When making every demonstration one frame picture, the current potential of each public electrode bar changes once, thereby realizes the some counter-rotating.
In liquid crystal display drive circuit as shown in Figure 3; Corresponding two groups of m of each public electrode bar and n's and be the pixel electrode of constant; The orthogonal projection of each pixel electrode on plane, corresponding public electrode bar place is positioned at this public electrode bar; Respectively corresponding two pixel electrodes of each public electrode that the public electrode bar is included, and the public electrode of every public electrode bar is with connecting portion 3 electrical connections, shown in stepped oblique line among the figure.On stepped oblique line 2-4; The m of pairing two pixel electrodes of public electrode 1-3 and n be respectively 10 and 11; The m of pairing two pixel electrodes of public electrode 1-5 and n with also be respectively 10 and 11; Such m and n's and be that 10 pixel electrode is one group, m and n's and be that 11 pixel electrode is a group, by that analogy.Equally with "+" number and "-" number respectively positive polarity and the negative polarity of voltage between remarked pixel electrode and the corresponding public electrode; The current potential of adjacent two public electrode bars is different arbitrarily; Control through common electrode driving circuit; When making every demonstration one frame picture, the current potential of each public electrode bar changes once, thereby realizes the reversal of poles of corresponding pixel electrode.As shown in Figure 4, with the mode of such public electrode potential change, if the public electrode current potential is 5V to the maximum, the maximum potential of source drive only needs 5V just passable, thereby has reduced the potential range of source drive output, makes the power consumption of source drive reduce.As shown in Figure 5; Showing is the potential change that comprises that the source drive of LCD of the liquid crystal display drive circuit of this embodiment provides; The potential range that source drive provides is 0-5V, and when the current potential of public electrode bar was 0V, liquid crystal drive voltage was a positive polarity; When the current potential of public electrode bar was 5V, liquid crystal drive voltage was a negative polarity.
In addition, pixel electrode among the present invention and public electrode bar preferably are the good tin indium oxide ITO electrode of light transmission.
The present invention also provides a kind of LCD that comprises above-mentioned liquid crystal display drive circuit; This LCD also comprises the liquid crystal of filling between array base palte, color membrane substrates and the two substrates; Pixel electrode is arranged on the array base palte, and the public electrode bar is arranged on array base palte and/or the color membrane substrates.
The present invention also provides the driving method of above-mentioned liquid crystal crystal display:
In first moment, for example strange frame is imported first common potential and second common potential respectively to adjacent public electrode bar; Second constantly, promptly even frame is that the public electrode bar of first common potential is imported second common potential to current potential, is that the public electrode bar of second common potential is imported first common potential to current potential.Through the logic change-over switch is set on common electrode driving circuit; Guarantee when parity frame replaces; Same public electrode bar switches between two current potentials, thereby realizes the some counter-rotating under the public electrode potential change, has realized when reducing power consumption, guaranteeing the purpose of image quality.
Preferably, first common potential is 0V or 5V, and second common potential is 5V or 0V.
Above embodiment only is used to explain the present invention, and is not limitation of the present invention.Although the present invention is specified with reference to embodiment; Those of ordinary skill in the art is to be understood that; Technical scheme of the present invention is carried out various combinations, revises or is equal to replacement; The spirit and the scope that do not break away from technical scheme of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (8)
1. liquid crystal display drive circuit; It is characterized in that; Comprise by a plurality of pixel electrode matrix, a plurality of public electrode bar that rectangular pixel electrodes arranged forms and common electrode driving circuits that link to each other with said public electrode bar of being; The corresponding at least one group of m of each said public electrode bar and n and identical pixel electrode; The orthogonal projection of each said pixel electrode on plane, corresponding public electrode bar place is positioned at this public electrode bar, and said m and n are respectively said pixel electrode residing line number and columns in pixel electrode matrix; The current potential of each said public electrode bar of said common electrode driving circuit control is different with the current potential of adjacent public electrode bar, and the current potential of each said public electrode bar when every demonstration one frame picture change once, said current potential has two kinds.
2. liquid crystal display drive circuit as claimed in claim 1 is characterized in that, each said public electrode bar comprises at least one public electrode.
3. liquid crystal display drive circuit as claimed in claim 2 is characterized in that, all current potentials keep identical public electrode bar to be electrically connected.
4. liquid crystal display drive circuit as claimed in claim 1 is characterized in that said current potential comprises 0V and 5V.
5. like each described liquid crystal display drive circuit of claim 1-4, it is characterized in that said pixel electrode and said public electrode bar are tin indium oxide ITO electrode.
6. a LCD is characterized in that, comprises each described liquid crystal display drive circuit of claim 1-5.
7. the driving method of the described LCD of claim 6 is characterized in that:
Constantly import first common potential and second common potential respectively first to adjacent public electrode bar;
Second is that the public electrode bar of first common potential is imported second common potential to current potential constantly, is that the public electrode bar of second common potential is imported first common potential to current potential.
8. method as claimed in claim 7 is characterized in that, said first common potential is 0V, and second common potential is 5V; Or said first common potential is 5V, and second common potential is 0V.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100809873A CN102654988A (en) | 2012-03-23 | 2012-03-23 | Liquid crystal display drive circuit, liquid crystal display zone and drive method of liquid crystal display |
| PCT/CN2012/086707 WO2013139149A1 (en) | 2012-03-23 | 2012-12-14 | Liquid crystal display driving circuit, and liquid crystal display and driving method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100809873A CN102654988A (en) | 2012-03-23 | 2012-03-23 | Liquid crystal display drive circuit, liquid crystal display zone and drive method of liquid crystal display |
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| CN102654988A true CN102654988A (en) | 2012-09-05 |
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| CN2012100809873A Pending CN102654988A (en) | 2012-03-23 | 2012-03-23 | Liquid crystal display drive circuit, liquid crystal display zone and drive method of liquid crystal display |
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| CN (1) | CN102654988A (en) |
| WO (1) | WO2013139149A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013139149A1 (en) * | 2012-03-23 | 2013-09-26 | 京东方科技集团股份有限公司 | Liquid crystal display driving circuit, and liquid crystal display and driving method thereof |
| CN103472605A (en) * | 2013-09-13 | 2013-12-25 | 合肥京东方光电科技有限公司 | Array substrate, driving method thereof and display device |
| CN103745704A (en) * | 2013-12-30 | 2014-04-23 | 合肥京东方光电科技有限公司 | Liquid crystal display driving circuit and method as well as liquid crystal display |
| CN104424897A (en) * | 2013-08-20 | 2015-03-18 | 联咏科技股份有限公司 | Drive method of multiple common electrodes and display device |
| CN109215600A (en) * | 2018-10-23 | 2019-01-15 | 深圳市华星光电技术有限公司 | display panel and liquid crystal display device |
| WO2019037152A1 (en) * | 2017-08-25 | 2019-02-28 | 惠科股份有限公司 | Display device and driving method therefor |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2013139149A1 (en) | 2013-09-26 |
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Application publication date: 20120905 |