CN103871384B - A kind of liquid crystal material exchanges drive control signal generating structure - Google Patents
A kind of liquid crystal material exchanges drive control signal generating structure Download PDFInfo
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- CN103871384B CN103871384B CN201310722990.5A CN201310722990A CN103871384B CN 103871384 B CN103871384 B CN 103871384B CN 201310722990 A CN201310722990 A CN 201310722990A CN 103871384 B CN103871384 B CN 103871384B
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- stroke gate
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 44
- 239000000463 material Substances 0.000 title claims abstract description 13
- 238000006681 Combes synthesis reaction Methods 0.000 claims abstract description 4
- XOFYZVNMUHMLCC-ZPOLXVRWSA-N prednisone Chemical compound O=C1C=C[C@]2(C)[C@H]3C(=O)C[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 XOFYZVNMUHMLCC-ZPOLXVRWSA-N 0.000 claims abstract description 4
- 239000004576 sand Substances 0.000 claims abstract description 4
- 230000009977 dual effect Effects 0.000 abstract 1
- 230000005684 electric field Effects 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 6
- 230000001360 synchronised effect Effects 0.000 description 4
- 238000003384 imaging method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention belongs to liquid crystal pictorial display technical field, disclose a kind of liquid crystal material and exchange drive control signal generating structure, for by switching tube M
1, memory capacitance C
sand liquid crystal capacitance C
lCthe control signal of the liquid crystal display pixel elementary cell of composition generates; Data write end Data is by switching tube M
1with described memory capacitance C
sone end and liquid crystal capacitance C
lCone end be connected; Also comprise: Sheffer stroke gate; The input end of described Sheffer stroke gate respectively with line scanning control signal S
cANbe connected with polarity control signal; The output terminal of described Sheffer stroke gate is connected with the other end of described memory capacitance CS; Described liquid crystal capacitance C
lCthe other end and public electrode V
cOMbe connected.The present invention passes through dual input Sheffer stroke gate, to polarity control signal PC and the line scanning control signal S of liquid crystal display pixel elementary cell
cANcarry out logical operation, thus realize polarity control signal PC and line scanning control signal S
cANsynchronous execution, avoid postpone.
Description
Technical field
The present invention relates to liquid crystal pictorial display technical field, particularly a kind of liquid crystal material exchanges drive control signal generating structure.
Background technology
Liquid crystal is a kind of particular matter between solid and liquid, and it belongs to organic compound, is in a liquid state under normal conditions, but its molecules align is the same with solid crystal fairly regular.The principle of work of liquid crystal display is, if apply an electric field to liquid crystal, can change its molecules align, and give its matching polarized light sheet, it just can change the throughput of light simultaneously.The voltage briefly changing liquid crystal two ends just can change its penetrability, thus controls the change of display light and shade.This electric field then synthesizes generation by the electric potential signal on two electrodes before and after display pixel, it is piece of cake that display pixel is set up DC electric field, but DC electric field will cause chemical reaction and the ageing of electrode of liquid crystal material, thus reduce rapidly the display life of liquid crystal.Therefore in order to reduce the impact of DC electric field on the liquid crystal molecule life-span, needing to set up interchange and driving electric field.
See Fig. 1, set up liquid crystal material based on liquid crystal display pixel elementary cell and exchange driving electric field, by generating corresponding control signal control store electricity C
sterminal voltage realize.Control signal V
cwith the sweep signal S of the write operation of data
cANsync rates be the key factor affecting luminosity and imaging results.Data write operation is based on sweep signal S
cANperiodically action, but control signal V
cbelong to the extra signal generated, by the impact of peripheral circuit, often cause the delay of control signal, cause brightness too low, imaging results declines.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of peripheral circuit simplifying interchange drived control, promotes the control signal generating structure of polarity control signal and data write operation sync rates.
For solving the problems of the technologies described above, the invention provides a kind of liquid crystal material and exchanging drive control signal generating structure, for by switching tube M
1, memory capacitance C
sand liquid crystal capacitance C
lCthe control signal of the liquid crystal display pixel elementary cell of composition generates; Data write end Data is by switching tube M
1with described memory capacitance C
sone end and liquid crystal capacitance C
lCone end be connected; Also comprise: Sheffer stroke gate; The input end of described Sheffer stroke gate respectively with line scanning control signal S
cANbe connected with polarity control signal; The output terminal of described Sheffer stroke gate and described memory capacitance C
sthe other end be connected; Described liquid crystal capacitance C
lCthe other end and public electrode V
cOMbe connected.
Further, with the memory capacitance C of some liquid crystal display pixel elementary cells of a line
sall be connected to the output terminal of same Sheffer stroke gate.
Liquid crystal material provided by the invention exchanges drive control signal generating structure by memory capacitance C
sperform Polarity Control, mode is flexible, is different from the extreme centralized control of common electrical, simplifies the complexity of peripheral circuit; By Sheffer stroke gate by line scanning control signal S
cANand polarity control signal PC carries out logical operation, generate control signal and act on memory capacitance C
send, simplifies the generative circuit of external control signal, and then avoids the delay that too much cental element device causes, thus improves synchronous efficiency.
Accompanying drawing explanation
Fig. 1 is liquid crystal display pixel basic cell structure schematic diagram provided by the invention;
The schematic diagram of the liquid crystal material interchange drive control signal generating structure that Fig. 2 provides for the embodiment of the present invention;
The view of the line K that Fig. 3 provides for the embodiment of the present invention and the capable frame of K+1;
Fig. 4 is the view of the next frame of Fig. 3.
Embodiment
See Fig. 2, a kind of liquid crystal material that the embodiment of the present invention provides exchanges drive control signal generating structure, for by switching tube M
1, memory capacitance C
sand liquid crystal capacitance C
lCthe control signal of the liquid crystal display pixel elementary cell of composition generates; Data write end Data is by switching tube M
1with memory capacitance C
sone end and liquid crystal capacitance C
lCone end be connected; The input end of Sheffer stroke gate respectively with line scanning control signal S
cANbe connected with polarity control signal; The output terminal of Sheffer stroke gate and memory capacitance C
sthe other end be connected; Liquid crystal capacitance C
lCthe other end and public electrode V
cOMbe connected.By carrying out control signal PC and line scanning control signal S
cANcarry out logical operation and generate memory capacitance C
sthe control signal V of end
c, simplify control signal V
cthe design of generative circuit, simplified placement-and-routing, improved synchronous efficiency.
For some liquid crystal display pixel elementary cells of same a line, adopt the mode concentrating synchro control, that is, with the memory capacitance C of some liquid crystal display pixel elementary cells of a line
sall be connected to the output terminal of same Sheffer stroke gate.Thus maintained by unified control realization efficient data write and imaging results.
The embodiment of the present invention is changed by the display unit state of two adjacent row, and the course of work of the interchange drive control signal generating structure that the present embodiment provides is described in detail in detail; Suppose that the high level that Sheffer stroke gate NAND exports is 5V.
See Fig. 3, when the control signal Scan_k of row k is effective, be 0, the control signal Scan_k+1 of kth+1 row is invalid, is 1; Because polarity control signal PC is 1, then the Sheffer stroke gate NAND_k of line K export be 1 and the capable Sheffer stroke gate NAND_k+1 of K+1 to export be 0, be written to data voltage that the voltage on row k memory capacitance CS is be respectively Vdata1, Vdata2 ..., Vdatan.
See Fig. 4, when the control signal Scan_k+1 of kth+1 row is effective, be 0, it is invalid that the control signal Scan_k of row k becomes, and is 1; Then the Sheffer stroke gate NAND_k of line K export from 1 be transformed to 0 and the output of the capable Sheffer stroke gate NAND_k+1 of K+1 be transformed to 1 from 0, because all switching tubes of row k are all closed, according to capacitance charge conservation, the data voltage that voltage transformation in line K memory capacitance is be respectively Vdata1-5, Vdata2-5 ..., Vdatan-5, and opened due to kth+1 row, the saltus step of NAND_k+1 level can not affect the write of kth+1 row data.
In aforesaid operations, polarity control signal PC is 1, when namely performing negative polarity control, and the control level that Sheffer stroke gate exports and line scan signals S
cANdirectly related, that is: S
cANwhen being 0, switching tube conducting, when carrying out data write, V
coutput is 1, is high level all the time; S
cANwhen being 1, switching tube turns off, and carries out Data flipping, V
cbe 0 for low level, thus realize Data flipping; Complete negative polarity to control.
When performing positive polarity and controlling, polarity control signal PC is 0, therefore no matter line scan signals SCA
nwhy, the output of Sheffer stroke gate is always 1, namely keeps high level, maintains data and stores.
By the step logical operation to line scan signals and polarity control signal, can directly generate required control signal V
c, the peripheral circuit with respect to complexity generates the mode of control signal separately, the generating structure that the present embodiment provides, and structure is simple, avoids the delay because peripheral circuit element causes simultaneously, improves synchronous efficiency.
The liquid crystal material that the embodiment of the present invention provides exchanges drive control signal generating structure by memory capacitance C
sperform Polarity Control, mode is flexible, is different from the extreme centralized control of common electrical, simplifies the complexity of peripheral circuit; By Sheffer stroke gate by line scanning control signal S
cANand polarity control signal PC carries out logical operation, generate control signal and act on memory capacitance C
send, simplifies the generative circuit of external control signal, and then avoids the delay that too much cental element device causes, thus improves synchronous efficiency.
It should be noted last that, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to example to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (2)
1. liquid crystal material exchanges a drive control signal generating structure, for by switching tube M
1, memory capacitance C
sand liquid crystal capacitance C
lCthe control signal of the liquid crystal display pixel elementary cell of composition generates; Data write end Data is by switching tube M
1with described memory capacitance C
sone end and liquid crystal capacitance C
lCone end be connected; It is characterized in that, also comprise: Sheffer stroke gate; The input end of described Sheffer stroke gate respectively with line scanning control signal S
cANbe connected with polarity control signal; The output terminal of described Sheffer stroke gate and described memory capacitance C
sthe other end be connected; Described liquid crystal capacitance C
lCthe other end and public electrode V
cOMbe connected.
2. liquid crystal material as claimed in claim 1 exchanges drive control signal generating structure, it is characterized in that: with the memory capacitance C of some liquid crystal display pixel elementary cells of a line
sall be connected to the output terminal of same Sheffer stroke gate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310722990.5A CN103871384B (en) | 2013-12-24 | 2013-12-24 | A kind of liquid crystal material exchanges drive control signal generating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310722990.5A CN103871384B (en) | 2013-12-24 | 2013-12-24 | A kind of liquid crystal material exchanges drive control signal generating structure |
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| Publication Number | Publication Date |
|---|---|
| CN103871384A CN103871384A (en) | 2014-06-18 |
| CN103871384B true CN103871384B (en) | 2016-03-30 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1845234A (en) * | 2005-04-07 | 2006-10-11 | 三洋爱普生映像元器件有限公司 | Liquid crystal display device, driving circuit thereof, driving method, and electronic device |
| CN101118357A (en) * | 2006-08-01 | 2008-02-06 | 三星电子株式会社 | display device |
| CN101196629A (en) * | 2006-12-07 | 2008-06-11 | Lg.菲利浦Lcd株式会社 | Liquid crystal display and driving method thereof |
| CN101377914A (en) * | 2007-08-31 | 2009-03-04 | 索尼株式会社 | Display apparatus and display method |
| CN102460553A (en) * | 2009-06-17 | 2012-05-16 | 夏普株式会社 | Display driving circuit, display device and display driving method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2002362878A1 (en) * | 2001-10-19 | 2003-04-28 | Clare Micronix Integrated Systems, Inc. | Precharge circuit and method for passive matrix oled display |
-
2013
- 2013-12-24 CN CN201310722990.5A patent/CN103871384B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1845234A (en) * | 2005-04-07 | 2006-10-11 | 三洋爱普生映像元器件有限公司 | Liquid crystal display device, driving circuit thereof, driving method, and electronic device |
| CN101118357A (en) * | 2006-08-01 | 2008-02-06 | 三星电子株式会社 | display device |
| CN101196629A (en) * | 2006-12-07 | 2008-06-11 | Lg.菲利浦Lcd株式会社 | Liquid crystal display and driving method thereof |
| CN101377914A (en) * | 2007-08-31 | 2009-03-04 | 索尼株式会社 | Display apparatus and display method |
| CN102460553A (en) * | 2009-06-17 | 2012-05-16 | 夏普株式会社 | Display driving circuit, display device and display driving method |
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| CN103871384A (en) | 2014-06-18 |
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