CN101866590B - Display, display driving method, and source driving circuit - Google Patents
Display, display driving method, and source driving circuit Download PDFInfo
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- CN101866590B CN101866590B CN2010101693818A CN201010169381A CN101866590B CN 101866590 B CN101866590 B CN 101866590B CN 2010101693818 A CN2010101693818 A CN 2010101693818A CN 201010169381 A CN201010169381 A CN 201010169381A CN 101866590 B CN101866590 B CN 101866590B
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Abstract
A display comprises a plurality of first data lines, a plurality of second data lines, a plurality of pixel columns, at least one first charge sharing switch circuit and at least one second charge sharing switch circuit. Each second data line and each first data line are alternately arranged; each pixel row comprises a plurality of first pixels and a plurality of second pixels, each first pixel in each pixel row is electrically connected with one of the first data lines, and each second pixel in each pixel row is electrically connected with one of the second data lines; the first charge sharing switch circuit is electrically connected with at least part of the first data lines; the second charge sharing switch circuit is electrically connected with at least part of the second data lines. The invention also provides a display driving method and a source electrode driving circuit.
Description
[technical field]
The invention relates to a kind of display technique field, and particularly relevant for the structure of structure, display drive method and the source electrode drive circuit of display.
[background technology]
Press; LCD because of have high image quality, volume is little, in light weight and advantages of wide application range is widely used in consumption electronic products such as mobile phone, mobile computer, desktop display and TV, and replaced traditional cathode ray tube (CRT) display and become the main flow of display.
For LCD; Because the characteristic of liquid crystal material; The polarity that puts on the voltage on the liquid crystal cells of picture element need constantly replace, and is reversal of poles (polarity inversion) and the step that the polarity of voltage on the liquid crystal cells all changes when the picture element replacement of image is claimed.Existing reversal of poles mode can roughly be divided into picture frame counter-rotating (frame inversion), row counter-rotatings (column inversion) and some counter-rotating (dot inversion) three kinds; Wherein, the picture frame counter-rotating can make LCD tedious flicker occur, thereby multiselect is with row counter-rotating and some counter-rotating; For row counter-rotatings and some counter-rotating, the You Yidian counter-rotating can produce preferably display quality but power consumption is greater than the row counter-rotating.
Therefore; The LCD that proposes to adopt the arrangement of Zig-zag type picture element is arranged in the prior art; Phase electric property couplings in adjacent therewith two data lines of a part of picture element in the picture element row between adjacent two data lines, another person's phase electric property coupling in adjacent therewith two data lines of another part picture element; So when adopting row inversion mode can obtain visual effect with the some counter-rotating than power saving.Yet show monochromatic (R, G, B) or complementary color (B+R) under the situation of picture, 2/3 the data line of having an appointment is done high-frequency discharging and recharging always for R+G, G+B, and power consumption is still higher.Though prior art has the technical scheme that proposes electric charge and share (that is, the data line of positive-negative polarity is connected together charging neutrality mutually) before transition, can save about 50% dynamic power consumption (dynamic power) in theory; So reversing at the Zig-zag row, framework is next can not share electric charge mutually with the data line of positive-negative polarity, otherwise more power consumption.
[summary of the invention]
The object of the invention is providing a kind of display exactly, and its electric charge capable of using is shared operation and reached purpose of power saving.
A purpose more of the present invention provides a kind of display drive method, and its electric charge capable of using is shared operation and reached purpose of power saving.
Another purpose of the present invention provides a kind of source electrode drive circuit, has electric charge and shares function.
A kind of display that the embodiment of the invention proposes comprises many first data lines, many second data lines, a plurality of picture element row, at least one first electric charge shares on-off circuit and at least one second electric charge is shared on-off circuit.Wherein, second data line and first data line are alternately arranged; Each picture element row comprises a plurality of first picture elements and a plurality of second picture element, and one in each first picture element in each picture element row and first data line is electrically connected, and one in each second picture element in each picture element row and second data line is electrically connected; The part person at least that first electric charge is shared in the on-off circuit and first data line is electrically connected; The part person at least that second electric charge is shared in the on-off circuit and second data line is electrically connected.
In one embodiment of this invention, above-mentioned display more comprises channel switch circuit and output-stage circuit; Wherein output-stage circuit is in order to provide the video data of dissimilar polarities respectively and to have a plurality of delivery channels to first data line and second data line, and each delivery channel is electrically coupled to first and second data line respectively through the channel switch circuit.
In one embodiment of this invention, first and second picture element in above-mentioned each picture element row comprises M kind color picture element, and M is a positive integer and more than or equal to 3; Above-mentioned part person's at least in first data line quantity be M positive integer doubly, and the above-mentioned part person's at least in second data line quantity be M positive integer doubly.
In one embodiment of this invention, above-mentioned M kind color picture element comprises red picture element, green picture element and blue picture element.
In one embodiment of this invention, each first picture element in each above-mentioned picture element row and each second picture element are periodic arrangement along the length direction of picture element row, for example are arranged alternately.
A kind of display drive method that the embodiment of the invention proposes is applicable to display; Wherein display comprises that every adjacent in many data lines and these data lines is provided with a plurality of picture elements between the two; Part in these picture elements is electrically coupled to adjacent one among both, and the another part in these picture elements is electrically coupled to adjacent another person among both.Display drive method in the present embodiment comprises step: the video data with preset polarity is provided to each data line; And be divided at least one group and carry out electric charge and share operation receiving identical polar video data person in these data lines, receive and then do not carry out electric charge between the dissimilar polarities video data person and share operation.
In one embodiment of this invention; Above-mentioned display more comprises output-stage circuit and channel switch circuit; Output-stage circuit is in order to providing video data and to comprise a plurality of delivery channels, and these delivery channels are electrically coupled to above-mentioned data line respectively through the channel switch circuit; Above-mentioned electric charge is shared operation system and is executed between the off period of channel switch circuit.
In one embodiment of this invention, above-mentioned electric charge is shared operation system and is executed between each off period of channel switch circuit.
In one embodiment of this invention, carrying out adjacent twice above-mentioned electric charge shared between the operation at least at interval between an above-mentioned off period.
A kind of source electrode drive circuit that the embodiment of the invention proposes comprises a plurality of first video data output terminals, a plurality of second video data output terminal, channel switch circuit, output-stage circuit, a plurality of first electric charge shares on-off circuit and a plurality of second electric charge is shared on-off circuit.Wherein, Output-stage circuit is in order to providing the video data of dissimilar polarities respectively and to have a plurality of delivery channels to the first video data output terminal and the second video data output terminal, and these delivery channels are electrically coupled to each first and second two video data output terminals respectively through the channel switch circuit; Each first electric charge shares on-off circuit and the part first video data output terminal is electrically connected; Each second electric charge shares on-off circuit and the part second video data output terminal is electrically connected.
In one embodiment of this invention; Be applied to comprise the display of M kind color picture element when above-mentioned source electrode drive circuit; Wherein M is a positive integer and more than or equal to 3, and the positive integer that the quantity of sharing the quantity of the part first video data output terminal that any one in the on-off circuit be electrically connected with first electric charge and sharing the part second video data output terminal that any one in the on-off circuit be electrically connected with second electric charge is all M doubly.
The embodiment of the invention is through being provided with first electric charge and sharing on-off circuit and second electric charge being shared on-off circuit; Share operation so that a plurality of data lines of reception identical polar video data carry out electric charge, then do not carry out electric charge between the data line of reception dissimilar polarities video data and share; Display execution electric charge under the situation of selecting row counter-rotating (column inversion) mode for use that the so feasible Zig-zag of employing type picture element is arranged is shared operation and can be obtained preferable power saving effect.
For let above and other objects of the present invention, feature and advantage can be more obviously understandable, hereinafter is special lifts preferred embodiment, and cooperates appended graphicly, elaborates as follows.
[description of drawings]
Fig. 1 illustrates the part-structure synoptic diagram for a kind of display that is relevant to the embodiment of the invention.
Fig. 2 illustrates the inner structure synoptic diagram into the source electrode drive circuit of display shown in Figure 1.
Many the data lines that Fig. 3 shows display shown in Figure 1 carry out the signal timing diagram of electric charge when sharing operation.
Fig. 4 illustrates the part-structure synoptic diagram for the another kind of display that is relevant to the embodiment of the invention.
Fig. 5 illustrates many data lines for display shown in Figure 4 and carries out the signal timing diagram of electric charge when sharing operation.
[primary clustering symbol description]
10,20: display
12: source electrode drive circuit
141: the first picture elements
143: the second picture elements
16: gate drive circuit
D1～D13: data line
G1～G4: sweep trace
C1～C12: picture element row
121: output-stage circuit
122: delivery channel
123: the channel switch circuit
125a: first electric charge is shared on-off circuit
125b: second electric charge is shared on-off circuit
127: odd number video data output terminal
129: even number video data output terminal
STB: enable signal
VCOM: share current potential
[embodiment]
See also Fig. 1, it illustrates the part-structure synoptic diagram for a kind of display that is relevant to the embodiment of the invention.As shown in Figure 1, display 10 adopts Zig-zag type picture elements to arrange and comprises that source electrode drive circuit, gate drive circuit 16, picture element for example are listed as for example D1～D13 and sweep trace G1～G4 for example of C1～C12, data line.
Wherein, Data line D1～D13 comprises odd data line D1, D3, D5, D7, D9, D11, D13 and even data line D2, D4, D6, D8, D10, D12, and odd data line D1, D3, D5, D7, D9, D11, D13 and even data line D2, D4, D6, D8, D10, D12 alternately arrange.Each picture element row C1～C12 comprises a plurality of first picture elements 141 and a plurality of second picture element 143; Each first picture element 141 among each picture element row C1～C12 respectively with odd data line D1, D3, D5, D7, D9, D11, D13 in electric property couplings mutually, and each second picture element 143 among each picture element row C1～C12 respectively with even data line D2, D4, D6, D8, D10, D12 in electric property couplings mutually.Can also learn that from Fig. 1 first picture element 141 among each picture element row C1～C12 and second picture element 143 are periodic arrangement along the length direction of picture element row, and more specifically be arranged alternately for length direction along the picture element row.
See also Fig. 2, it illustrates to being relevant to the inner structure synoptic diagram of source electrode drive circuit 12 shown in Figure 1.Source electrode drive circuit 12 has a plurality of odd number video data output terminals 127 and a plurality of even number video data output terminal 129, with respectively as the output terminal of the video data of dissimilar polarities.As shown in Figure 2; Odd number video data output terminal 127 is in order to first polarity (for example positive polarity) video data to odd data line D1, D3, D5, D7, D9 and D11 to be provided, and even number video data output terminal 129 is in order to second polarity (for example negative polarity) video data to even data line D2, D4, D6, D8, D10 and D12 to be provided.
Hold above-mentionedly, the internal circuit of source electrode drive circuit 12 comprises that output-stage circuit 121, channel switch circuit 123, a plurality of first electric charge are shared on-off circuit 125a and a plurality of second electric charge is shared on-off circuit 125b.Wherein, output-stage circuit 121 is in order to provide video data with preset polarity and to be passed to channel switch circuit 123 through its a plurality of delivery channels 122.Each first electric charge is shared on-off circuit 125a and a plurality of odd number video data output terminals 127 electric property coupling mutually, and each second electric charge is shared on-off circuit 125b and a plurality of even number video data output terminals 129 electric property coupling mutually; More specifically; For the display that adopts three kinds of color picture elements such as the for example red picture element of M kind color picture element, green picture element and blue picture element; The quantity of sharing the odd number video data output terminal 127 that on-off circuit 125a is electrically connected with each first electric charge preferably is doubly (for example 1 times of the positive integer of M; 2 times or more times); And the quantity of sharing the even number video data output terminal 129 that on-off circuit 125b is electrically connected with each second electric charge preferably also is the positive integer of M doubly (for example 1 times, 2 times or more times).At this, channel switch circuit 123, first electric charge are shared on-off circuit 125a and second electric charge and are shared on-off circuit 125b and be all the switch module array that comprises a plurality of switch modules.
Need to prove; Though a plurality of first electric charges shown in the present embodiment share on-off circuit 125a and a plurality of second electric charge is shared on-off circuit 125b; Thereby odd number video data output terminal 127 and even number video data output terminal 129 are divided into a plurality of groups respectively; But the present invention is not as limit; For example source electrode drive circuit 12 only has that single first electric charge is shared on-off circuit 125a and single second electric charge is shared on-off circuit 125b, thereby odd number video data output terminal 127 and even number video data output terminal 129 all are divided into single group respectively.
Please consult Fig. 1 to Fig. 3 in the lump, Fig. 3 shows many data lines and carries out the signal timing diagram that electric charge is shared when operation.Particularly; In the course of work of display 10; Video data with preset polarity will provide to each data line (D1～D6), positive polarity video data to odd data line D1, D3 and D5 for example are provided for example, and negative polarity video data to even data line D2, D4 and D6 are provided through output-stage circuit 121; This moment, enable signal STB was a low level, 123 conductings of channel switch circuit; At this, when the current potential that the video data to data line is provided during, then be the positive polarity video data greater than shared current potential VCOM, anti-, when the current potential that the video data to data line is provided during, then be the negative polarity video data less than shared current potential VCOM.During enable signal STB is high levle; Channel switch circuit 123 ends; With odd data line D1, D3 and D5 mutually first electric charge of electric property coupling share on-off circuit 125a conducting; And with coupling logarithmic data line D2, D4 and D6 mutually second electric charge of electric property coupling share on-off circuit 125b conducting; Odd data line D1, D3 and D5 share on-off circuit 125a conducting because of first electric charge each other and carry out electric charge and share; Even data line D2, D4 and D6 share on-off circuit 125b conducting because of second electric charge each other and carry out electric charge and share, so that the charging potential of same polarity data line swing (swing) amplitude becomes 2/3 in the prior art on average under the situation that shows monochrome or complementary color, reach less electricity consumption.In addition; Electric charge between odd data line D7, D9 and the D 11 share operation share with the electric charge between data line D1, D3 and the D5 operate basic identical; Electric charge between even data line D8, D10 and the D12 share operation share with the electric charge between data line D2, D4 and the D6 operate basic identical, so repeat no more at this.From Fig. 3, can also learn, the electric charge between the same polarity data line share operation system be executed in enable signal STB each time be high levle during, that is between the off period of channel switch circuit 123.
In addition; The display that the embodiment of the invention proposes is not limited to structure shown in Figure 1; Each picture element is listed as the periodic arrangement that first picture element 141 and second picture element 143 among C1～C12 for example can adopt alternate manner; Be that repetitive carries out repeated arrangement for example, and the quantity of first picture element can equate also can not wait with the quantity of second picture element in the repetitive with a plurality of first picture elements and a plurality of second picture element of arranging in regular turn; Perhaps first picture element and second picture element in each picture element row arranged arbitrarily.To different picture element arrangement modes, share the operating efficiency maximization for realizing the electric charge between the same polarity data line, the execution electric charge is shared the opportunity of operation should do corresponding adjustment.Display 20 for example shown in Figure 4; The structure of its structure and display 10 shown in Figure 1 is basic identical; Different first picture element 141 and second picture elements 143 that are listed as C1～C12 for example in: each picture element in the display 20 of being in are to be that repetitive carries out repeated arrangement with two first picture elements and two second picture elements of arranging in regular turn, and first picture element 141 and second picture element 143 that are different from each the picture element row C1～C12 in the display 10 be arranged alternately (that is be that repetitive carry out repeated arrangement with one first picture element and one second picture element of arrangement in regular turn).Under this situation, see also Fig. 5, it illustrates many data lines for display 20 and carries out the signal timing diagram of electric charge when sharing operation.Particularly; Share the operating efficiency maximization for realizing the electric charge between the same polarity data line; Electric charge is shared operation and should be adjusted into enable signal STB and twice high levle occur continuously and just carry out once, that is carries out adjacent twice electric charge and share between the operation at interval between the off period of a channel switch circuit 123.
In sum; The embodiment of the invention is through being provided with first electric charge and sharing on-off circuit and second electric charge being shared on-off circuit; Share operation so that a plurality of data lines of reception identical polar video data carry out electric charge, then do not carry out electric charge between the data line of reception dissimilar polarities video data and share; Display execution electric charge under the situation of selecting row counter-rotating (column inversion) mode for use that the so feasible Zig-zag of employing type picture element is arranged is shared operation and can be obtained preferable power saving effect.
Though the present invention discloses as above with preferred embodiment; Right its is not in order to limit the present invention; Anyly have the knack of this art; Do not breaking away from the spirit and scope of the present invention, when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (12)
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101693818A CN101866590B (en) | 2010-04-26 | 2010-04-26 | Display, display driving method, and source driving circuit |
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| CN2010101693818A CN101866590B (en) | 2010-04-26 | 2010-04-26 | Display, display driving method, and source driving circuit |
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| CN101866590B true CN101866590B (en) | 2012-05-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI483239B (en) * | 2013-01-31 | 2015-05-01 | Himax Tech Ltd | Method of dynamic charge sharing for a display device |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI467562B (en) | 2012-10-17 | 2015-01-01 | Au Optronics Corp | Driving device and display device |
| CN104575421A (en) * | 2014-12-25 | 2015-04-29 | 深圳市华星光电技术有限公司 | Source electrode drive circuit of liquid crystal display panel and liquid crystal displayer |
| CN106324929A (en) * | 2015-07-01 | 2017-01-11 | 奇景光电股份有限公司 | Charge sharing device and method for display panel |
| US11386863B2 (en) * | 2019-07-17 | 2022-07-12 | Novatek Microelectronics Corp. | Output circuit of driver |
| CN112669781B (en) * | 2020-12-14 | 2022-04-12 | 北京奕斯伟计算技术有限公司 | Display processing method, display processing device and display panel |
| CN113948042A (en) * | 2021-11-16 | 2022-01-18 | 禹创半导体(深圳)有限公司 | OLED power saving circuit and method |
| CN115457915B (en) * | 2022-10-18 | 2024-06-04 | 硅谷数模(苏州)半导体股份有限公司 | Control method and control device of source driver and display system |
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| CN101644842A (en) * | 2008-09-04 | 2010-02-10 | 友达光电股份有限公司 | Multi switch pixel design using column inversion data driving |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4584131B2 (en) * | 2005-04-18 | 2010-11-17 | ルネサスエレクトロニクス株式会社 | Liquid crystal display device and driving circuit thereof |
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| CN1276586A (en) * | 1999-06-03 | 2000-12-13 | 权五敬 | Use of multiphase charge for share of TFT-LCD and driving method |
| EP1538599A2 (en) * | 2003-12-05 | 2005-06-08 | Sharp Kabushiki Kaisha | Liquid crystal display |
| CN101231438A (en) * | 2007-01-26 | 2008-07-30 | 三星电子株式会社 | Liquid crystal display device and driving method thereof |
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| TWI483239B (en) * | 2013-01-31 | 2015-05-01 | Himax Tech Ltd | Method of dynamic charge sharing for a display device |
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