CN203311139U - Double-gate drive type liquid crystal display equipment - Google Patents
Double-gate drive type liquid crystal display equipment Download PDFInfo
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- CN203311139U CN203311139U CN2013203254157U CN201320325415U CN203311139U CN 203311139 U CN203311139 U CN 203311139U CN 2013203254157 U CN2013203254157 U CN 2013203254157U CN 201320325415 U CN201320325415 U CN 201320325415U CN 203311139 U CN203311139 U CN 203311139U
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- electric charge
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Abstract
The utility model discloses double-gate drive type liquid crystal display equipment which comprises a liquid crystal panel, a gate driving module, a source driving module and a charge sharing unit, wherein the liquid crystal panel is provided with a plurality of pixels; the gate driving module is provided with a plurality of scanning lines which are respectively connected with the pixels and are used for controlling the pixels to be started up; the source driving module is provided with a plurality of data lines which are respectively connected with the pixels and are used for respectively charging the pixels through a positive polar voltage and a negative polar voltage when a part of the pixels are started up; opposite polar voltages are simultaneously output through adjacent data lines; the charge sharing unit is electrically connected with the source driving module and is used for sharing the charges of the opposite polar voltages for two adjacent data lines before the pixels are charged, so that the charges of the pixels are neutralized, and further the times for charging the pixels are the same.
Description
Technical field
The utility model is to provide the driving liquid crystal display of a kind of dual-gate, especially is applicable to the liquid crystal display that dual-gate drives.
Background technology
Liquid crystal display is becoming an indispensable product in society now already, and it has been used in various different field, on information products such as computing machine, mobile phone.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the schematic diagram of the existing driving liquid crystal display of dual-gate; The picture element array figure of the existing driving liquid crystal display of dual-gate of Fig. 2.As shown in the figure, liquid crystal display 100 has gate drive module 110, source drive module 120 and liquid crystal panel 130, and in liquid crystal panel 130, is provided with a plurality of picture elements.Gate drive module 110 is electrically connected with a plurality of sweep traces GO1～GOn and picture element, and same row picture element sees through two scanning line driving, for example the common row picture element that drives of GO1 and GO2.And source drive module 120 is electrically connected with a plurality of data lines SO1～SOn and picture element, each data line drives two adjacent picture elements simultaneously, as shown in Figure 2, this row picture element driven with respect to sweep trace GO1 and GO2, data line SO1 drives picture element P1 and P2, with respect to this row picture element that sweep trace GO3 and GO4 drive, data line SO1 drives picture element P3 and P4, by that analogy.See through the method that dual-gate drives, can effectively reduce the usage quantity of data line SO1～SOn.
Data line SO1 drives picture element P1, P2, P3, P4, P5 in the mode at interval of a positive-negative polarity voltage of two picture element conversions, namely with positive polarity voltage, drive picture element P1, with reverse voltage, drive picture element P2 and picture element P3, then with positive polarity voltage, drive picture element P4 and P5 again, by that analogy.
Yet, while by positive polarity voltage, being converted to reverse voltage, for example, when picture element P1 changes to the signal polarity between picture element P2, will cause picture element P2 undercharge, and between picture element P2 and picture element P3, there is no the signal polarity conversion, so picture element P3 will be charged to stable state.In like manner, also same problem can occur in picture element P4.Thus, will cause the previous picture element undercharge in two picture elements that same polarity voltage drives, and then cause the situation that demonstrates vertical lines between adjacent picture element because briliancy is different on liquid crystal panel 130, cause the user to use inconvenience.
Therefore, develop a kind of method or device that solves above-mentioned disappearance, real is current problem in the urgent need to address.
The utility model content
Accordingly, the utility model is for solving the shortcoming of aforementioned prior art, and purpose is to provide a kind of dual-gate driving liquid crystal display, and makes the picture element in liquid crystal display can have the identical duration of charging, avoid demonstrating the situation of vertical lines, cause the user to use inconvenience.
For realizing the purpose of this utility model, provide a kind of dual-gate driving liquid crystal display.Liquid crystal display comprises: liquid crystal panel, gate drive module, source drive module and electric charge shared cell.Liquid crystal panel has a plurality of picture elements.The gate drive module has that a plurality of sweep traces connect respectively picture element and in order to control the unlatching of picture element.Source drive module has a plurality of data lines and connects respectively picture element, and, when the part picture element is opened, with positive polarity voltage and reverse voltage, picture element is charged respectively, and adjacent data line is in same time system's output dissimilar polarities voltage.Electric charge shared cell and source drive module are electrically connected, and the electric charge that is used to before each this picture element charging two adjacent data lines are carried out dissimilar polarities voltage is shared, and makes the charging neutrality in each this picture element, and then makes the duration of charging of each this picture element identical.
Another purpose of the present utility model is proposing the driving liquid crystal display of a kind of dual-gate, solves the different formed perpendicular line of two adjacent picture element briliancy, allows each picture element charging arrive the stable state time all identical.
According to above-mentioned purpose, the utility model provides a kind of dual-gate driving liquid crystal display, this liquid crystal display comprise liquid crystal panel, gate drive module, with the electric charge shared cell.Liquid crystal panel has a plurality of picture elements.Whether the gate drive module has a plurality of sweep traces and connects respectively those picture elements, open in order to control those picture elements.Source drive module has a plurality of data lines and connects respectively those picture elements, and, when those picture elements of part are opened, with positive polarity voltage and reverse voltage, picture element is charged respectively, and adjacent data line is in same time output dissimilar polarities voltage.Electric charge shared cell and source drive module are electrically connected, the electric charge that is used to before each this picture element charging two adjacent data lines are carried out dissimilar polarities voltage is shared, make the charging neutrality in each this picture element, and then make the duration of charging of each this picture element identical, and exportable the first electric charge of this electric charge shared cell controls signal or the second electric charge is controlled signal.When electric charge shared cell output the first electric charge is controlled signal, for every this sweep trace all starts electric charge, share, and when electric charge shared cell output the second electric charge was controlled signal, the electric charge that every 2 these sweep traces start was shared.
Therefore, the utility model can make the picture element duration of charging in liquid crystal display all identical, has not avoided the picture element level of charge identical and cause briliancy different and then on liquid crystal display, produce bright dark clearly demarcated vertical lines, affects user's service property (quality).
The accompanying drawing explanation
Fig. 1 is the schematic diagram of available liquid crystal display device;
Fig. 2 is the picture element array figure of available liquid crystal display device;
Fig. 3 is the circuit block diagram of existing liquid crystal display according to the utility model embodiment;
Fig. 4 is the picture element array figure of existing liquid crystal display according to the utility model embodiment;
Fig. 5 is the circuit diagram of existing source drive module according to the utility model embodiment;
Fig. 6 is that existing electric charge according to the utility model embodiment is shared the time-state method of controlling signal; And
Fig. 7 is the existing charging of picture element according to the utility model embodiment time-state method.
100,300 liquid crystal displays
110,310 gate drive modules
120,320 source drive modules
130,330 liquid crystal panels
3201 positive polarity voltage sources
3202 reverse voltage sources
3203 input data sources
3204 first digital/analog converters
3205 second digital/analog converters
3206 first operational amplifiers
3207 second operational amplifiers
3208 polarity selected cells
3209 signal output control units
3210 electric charge shared cells
SO1～Sn data line
GO1～GOn sweep trace
P1～P6 picture element
The CS electric charge is shared signal
CS1 the first electric charge is shared signal
CS2 the second electric charge is shared signal
LD signal output control signal
The D data
The V+ positive polarity voltage
The V-reverse voltage
Embodiment
Please refer to Fig. 3 and coordinate Fig. 4, Fig. 3 is the circuit block diagram according to the liquid crystal display of the utility model embodiment; Fig. 4 is the picture element array figure according to the liquid crystal display of the utility model embodiment.As shown in Figure 3, the liquid crystal display 300 of the present embodiment comprises gate drive module 310, source drive module 320 and liquid crystal panel 330, and in liquid crystal panel 330, is provided with a plurality of picture elements.Gate drive module 310 is electrically connected with a plurality of sweep traces GO1～GOn and picture element, and same row picture element sees through two scanning line driving, and for example the common row picture element that drives of GO1 and GO2, so namely form the liquid crystal display 300 that dual-gate drives.And source drive module 320 is electrically connected with a plurality of data lines SO1～SOn and picture element, each data line drives two picture elements adjacent in same row picture element simultaneously, as shown in Figure 4, this row picture element driven with respect to sweep trace GO1 and GO2, data line SO1 drives picture element P1 and P2, with respect to this row picture element that sweep trace GO3 and GO4 drive, data line SO1 drives picture element P3 and P4, by that analogy.See through the method that dual-gate drives, can effectively reduce the usage quantity of data line SO1～SOn.
Refer to Fig. 5, Fig. 5 is the circuit diagram according to the source drive module of the utility model embodiment.As shown in the figure, only enumerate the first data line SO1 and the second data line SO2 is example in this, remaining information line SO3～SOn all by that analogy.Source drive module 320 comprises positive polarity voltage source 3201, reverse voltage source 3202, input data source 3203, the first digital/analog converter 3204, the second digital/analog converter 3205, the first operational amplifier 3206, the second operational amplifier 3207, polarity selected cell 3208, signal output control unit 3209, electric charge shared cell 3210.In this embodiment, positive polarity voltage source 3201 and the first digital/analog converter 3204 are electrically connected, the first digital/analog converter 3204 is electrically connected with the first operational amplifier 3206 again, and the first operational amplifier 3206 is electrically connected with polarity selected cell 3208.And reverse voltage source 3202 and the second digital/analog converter 3205 are electrically connected, the second digital/analog converter 3205 is electrically connected with the second operational amplifier 3207 again, and the second operational amplifier 3207 is electrically connected with polarity selected cell 3208.And input data source 3203 is electrically connected with the first digital/analog converter 3204 and the second digital/analog converter 3205 respectively.
In this embodiment, the positive polarity voltage V+ that the first digital/analog converter 3204 is inputted in order to data D that input data source 3203 is inputted and positive polarity voltage source 3201 is converted to analog form by digital form, and input polarity selected cell 3208 after seeing through the first operational amplifier 3206 signal being amplified.The reverse voltage V-that the second digital/analog converter 3205 is inputted in order to data D that input data source 3203 is inputted and reverse voltage source 3202 is converted to analog form by digital form, and input polarity selected cell 3208 after seeing through the second operational amplifier 3207 signal being amplified.
In this embodiment, positive polarity voltage after polarity selected cell 3208 can be selected to amplify and data or reverse voltage and data are passed to signal output control unit 3209, see through again signal output control unit 3209 those signals are selected to export to the first data line SO1 or the second data line SO2, to reach each data line, all can do to each picture element the operation of positive-negative polarity voltage transitions, and the voltage that the first data line SO1 and the second data line SO2 exported in the same time is the voltage of dissimilar polarities, namely when the first data line SO1 output cathode voltage, the second data line SO2 is output negative pole voltage.
In this embodiment, electric charge shared cell 3210 is arranged between polarity selected cell 3208 and signal output control unit 3209, and be connected across between the first data line SO1 and the second data line SO2, before data line will charge to picture element, electric charge shared cell 3210 will carry out electric charge between the first data line SO1 and the second data line SO2 shares, electric charge in picture element is neutralized because of the input of heteropolarity voltage, but can make thus the rapid discharge of last charging picture element, after last charging picture element discharge off, stopping electric charge sharing, start next picture element charging, so can make the duration of charging of each picture element all identical.
In some embodiment, electric charge shared cell 3210 can be arranged at outside source drive module 320, can make current device without electric charge shared cell 3210 electric charge shared cell 3210 can be external in to source drive module 320, increases user's convenience.
Refer to Fig. 6 and coordinate Fig. 5, Fig. 6 shares according to the electric charge of the utility model embodiment the time-state method of controlling signal.The electric charge of electric charge shared cell 3210 outputs is controlled signal can be divided into the first electric charge control signal CS1 and the second electric charge control signal CS2.When electric charge shared cell 3210 output the first electric charges are controlled signal CS1, for all starting electric charge, shares every sweep trace, every sweep trace all starts electric charge to be shared and is about to same polarity or the charging neutrality of dissimilar polarities, and for example positive polarity turns negative polarity (GO1 → GO2) or negative polarity turn the negative polarity (charging neutrality of GO2 → GO3).And when electric charge shared cell 3210 output the second electric charges are controlled signal CS2, the electric charge that every 2 sweep traces just can start is shared, the electric charge that every two sweep traces just can start is about to the charging neutrality of dissimilar polarities, and for example positive polarity turns negative polarity (GO1 → GO2).According to the panel characteristics application, electric charge shared cell 3210 selects output the first electric charge to control signal CS1 or the second electric charge is controlled signal CS2, to solve the different formed perpendicular line of two adjacent picture element briliancy, allows each picture element charging arrive the stable state time all identical.
Refer to Fig. 7 and coordinate Fig. 4 and Fig. 5, Fig. 7 is the picture element charging time-state method according to the utility model embodiment.The picture element charged by the first data line SO1 of herein only take is example.As shown in Figure 4, the picture element that the first data line SO1 charges is picture element P1～P6, and in this embodiment, picture element P1 charges with positive polarity voltage, and picture element P2 system charges with reverse voltage, and picture element P3 charges with reverse voltage, picture element P4 charges with positive polarity voltage, picture element P5 charges with positive polarity voltage, and picture element P6 charges with reverse voltage, namely often is separated by two picture element conversion positive-negative polarity voltages once.
In this embodiment, first see through sweep trace and start picture element P1～P6, at the signal output control unit 3209 in source drive module 320, optionally positive-negative polarity voltage is inputted to picture element P1～P6 by the first data line SO1.As shown in Figure 7, electric charge shared cell 3210 output charges are shared signal CS, and signal output control unit 3209 output one signal output control signal LD.When the shared signal CS of electric charge is relative logic high voltage, signal output control signal LD is relative logic high voltage, now the first data line SO1 namely starts with positive polarity voltage, picture element P1 to be charged, now picture element P1 starts charging by zero level, when the shared signal CS of electric charge is relative logic high voltage again, the first data line SO1 will prepare with reverse voltage, picture element P2 to be charged, now the positive and negative charge first carried out between the first data line SO1 and the second data line SO2 is shared, reverse voltage is imported in picture element P1, make the charge waveforms of picture element P1 get back to fast zero level (being discharge off), now the first data line SO1 can charge to picture element P2.When the shared signal CS of electric charge was relative logic high voltage again, the charge waveforms of picture element P2 was got back to zero level fast, and the first data line SO1 will charge to picture element P3 with reverse voltage.When the shared signal CS of electric charge was relative logic high voltage again, the charge waveforms of picture element P3 was got back to zero level fast, and the first data line SO1 will charge to picture element P4 with positive polarity voltage.Picture element P5 and P6 charge with the method.
In sum, see through electric charge shared cell of the present utility model, can make the duration of charging of each picture element all identical, and then reach identical briliancy, so can not avoid the picture element level of charge identical and cause briliancy different and then on liquid crystal display, produce bright dark clearly demarcated vertical lines, affect user's service property (quality).
Claims (10)
1. the driving liquid crystal display of dual-gate, is characterized in that, this liquid crystal display comprises:
One liquid crystal panel, have a plurality of picture elements;
Whether one gate drive module, have a plurality of sweep traces and connect respectively those picture elements, open in order to control those picture elements;
The one source pole driver module, have a plurality of data lines and connect respectively those picture elements, and when those picture elements of part are opened, with positive polarity voltage and reverse voltage, those picture elements are charged respectively, those adjacent data lines are in same time system's output dissimilar polarities voltage; And
One electric charge shared cell, with this source drive module, be electrically connected, the electric charge that is used to before each this picture element charging two adjacent data lines are carried out dissimilar polarities voltage is shared, and makes the charging neutrality in each this picture element, and then makes the duration of charging of each this picture element identical.
2. the driving liquid crystal display of dual-gate as claimed in claim 1, is characterized in that, those picture elements that are positioned at same row are to be started by two these sweep traces.
3. the driving liquid crystal display of dual-gate as claimed in claim 1, is characterized in that, this source drive module system inputs those picture elements again after this positive polarity voltage, this reverse voltage and data are processed.
4. the driving liquid crystal display of dual-gate as claimed in claim 1, is characterized in that, this electric charge shared cell is to be arranged in this source drive module.
5. the driving liquid crystal display of dual-gate, is characterized in that, this liquid crystal display comprises:
One liquid crystal panel, have a plurality of picture elements;
Whether one gate drive module, have a plurality of sweep traces and connect respectively those picture elements, open in order to control those picture elements;
The one source pole driver module, have a plurality of data lines and connect respectively those picture elements, and when those picture elements of part are opened, with positive polarity voltage and reverse voltage, those picture elements are charged respectively, those adjacent data lines are in same time system's output dissimilar polarities voltage; And
One electric charge shared cell, with this source drive module, be electrically connected, the electric charge that is used to before each this picture element charging two adjacent data lines are carried out dissimilar polarities voltage is shared, make the charging neutrality in each this picture element, and then make the duration of charging of each this picture element identical, and exportable one first electric charge of this electric charge shared cell controls signal or one second electric charge is controlled signal;
Wherein, when this electric charge shared cell is exported this first electric charge control signal, for every this sweep trace all starts electric charge, share, and when this electric charge shared cell was exported this second electric charge control signal, the electric charge that every two these sweep traces start was shared.
6. the driving liquid crystal display of dual-gate as claimed in claim 5, is characterized in that, those picture elements that are positioned at same row are to be started by two these sweep traces.
7. the driving liquid crystal display of dual-gate as claimed in claim 5, is characterized in that, source drive module is inputted those picture elements again after this positive polarity voltage, this reverse voltage and data are processed.
8. the driving liquid crystal display of dual-gate as claimed in claim 5, is characterized in that, this electric charge shared cell is to be arranged in this source drive module.
9. the driving liquid crystal display of dual-gate as claimed in claim 5, is characterized in that, it is namely by same polarity or the charging neutrality of dissimilar polarities that every this sweep trace all starts electric charge shared.
10. the driving liquid crystal display of dual-gate as claimed in claim 5, is characterized in that, the electric charge that every two these sweep traces start is namely by the charging neutrality of dissimilar polarities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203254157U CN203311139U (en) | 2013-06-07 | 2013-06-07 | Double-gate drive type liquid crystal display equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203254157U CN203311139U (en) | 2013-06-07 | 2013-06-07 | Double-gate drive type liquid crystal display equipment |
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| Publication Number | Publication Date |
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| CN203311139U true CN203311139U (en) | 2013-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013203254157U Expired - Fee Related CN203311139U (en) | 2013-06-07 | 2013-06-07 | Double-gate drive type liquid crystal display equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015096403A1 (en) * | 2013-12-26 | 2015-07-02 | 京东方科技集团股份有限公司 | Driving method for liquid crystal display panel, liquid crystal display panel and display device |
| CN109509444A (en) * | 2018-12-19 | 2019-03-22 | 惠科股份有限公司 | control circuit of display panel, display device and control method |
| CN111261125A (en) * | 2020-03-19 | 2020-06-09 | 合肥京东方显示技术有限公司 | Data driver, control method thereof and display device |
-
2013
- 2013-06-07 CN CN2013203254157U patent/CN203311139U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015096403A1 (en) * | 2013-12-26 | 2015-07-02 | 京东方科技集团股份有限公司 | Driving method for liquid crystal display panel, liquid crystal display panel and display device |
| US9542898B2 (en) | 2013-12-26 | 2017-01-10 | Boe Technology Group Co., Ltd. | Driving method of a liquid crystal display panel, a liquid crystal display panel and a display device |
| CN109509444A (en) * | 2018-12-19 | 2019-03-22 | 惠科股份有限公司 | control circuit of display panel, display device and control method |
| CN109509444B (en) * | 2018-12-19 | 2021-07-06 | 惠科股份有限公司 | Control circuit of display panel, display device and control method |
| CN111261125A (en) * | 2020-03-19 | 2020-06-09 | 合肥京东方显示技术有限公司 | Data driver, control method thereof and display device |
| CN111261125B (en) * | 2020-03-19 | 2021-10-22 | 合肥京东方显示技术有限公司 | Data driver, control method thereof and display device |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20170607 |
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| CF01 | Termination of patent right due to non-payment of annual fee |