CN101202018A - Method for outputting common voltage and display device - Google Patents
Method for outputting common voltage and display device Download PDFInfo
- Publication number
- CN101202018A CN101202018A CNA2006101659168A CN200610165916A CN101202018A CN 101202018 A CN101202018 A CN 101202018A CN A2006101659168 A CNA2006101659168 A CN A2006101659168A CN 200610165916 A CN200610165916 A CN 200610165916A CN 101202018 A CN101202018 A CN 101202018A
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- China
- Prior art keywords
- display
- common
- pole plate
- electric voltage
- electrical pole
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Abstract
The invention relates to a display device which comprises a checkout and control device, a common voltage generating circuit and a multilevel common voltage selecting circuit. The checkout and control device checks display pictures which can display arrays to transmit controlling signals. The common voltage generating circuit generates a first common voltage and a second common voltage, and the multilevel common voltage selecting circuit receives the first common voltage, the second common voltage and the controlling signals and outputs the first common voltage and the second common voltage to a common electrode plate or only outputs the first common voltage to the electrode plate according to the controlling signals.
Description
Technical field
The present invention relates to a kind of display device, the particularly a kind of display device of different voltages that provide to the common electrical pole plate of array of display.
Background technology
Fig. 1 shows conventional thin film transistor liquid crystal display (Thin-Film Transistor LiquidCrystal Display, TFT LCD) device 100, thin-film transistor LCD device 100 comprises source electrode drive circuit 110, gate driver circuit 120 and array of display 130, array of display 130 is made up of a plurality of display unit, in order to draw conveniently, Fig. 1 only shows display unit 141, display unit 141 comprises thin film transistor (TFT) 142, storage capacitors 143 and luminescence unit 144, storage capacitors 143 and luminescence unit 144 all couple common electric voltage (CommonVoltage) Vcom, because each display unit of array of display 130 has compensating feed through voltage (Feed-Through Voltage), and the compensating feed through voltage of each display unit can be because the position at display unit place be different difference to some extent, therefore cause on the array of display 130 the best common electric voltage Vcom of each display unit different.Fig. 2 shows the graph of a relation of best common electric voltage and position of display unit, simultaneously with reference to figure 1, and according to the general array of display of experimental measurement, the best common electric voltage V in the A district of array of display 130
1Meeting is than the best common electric voltage V in the B district of array of display 130
2Little, the best common electric voltage V in the B district of array of display 130
2Meeting is than the best common electric voltage V in the C district of array of display 130
3Little, as shown in Figure 2.Therefore when 100 of thin-film transistor LCD devices provided each display unit to array of display 130 of common electric voltage, the picture that array of display 130 is produced had scintillation (Flicker).
Summary of the invention
In view of this, the invention provides a kind of display device of different voltages to the common electrical pole plate of array of display that provide, display device comprises that detecting controller, public voltage generating circuit and many level common electric voltage selects circuit.Detect controller and detect the display pattern of array of display to transmit control signal, public voltage generating circuit produces first common electric voltage and second common electric voltage, many level common electric voltage selects circuit to receive first common electric voltage, second common electric voltage and control signal, and exports first common electric voltage and second common electric voltage according to control signal and give the common electrical pole plate or only export first common electric voltage and give the common electrical pole plate.
A kind of display device of different voltages to the common electrical pole plate of array of display that provide also is provided in the present invention, and display device comprises that detecting controller, public voltage generating circuit and many level common electric voltage selects circuit.Detect controller and detect the display pattern of array of display to transmit control signal, public voltage generating circuit produces first common electric voltage and second common electric voltage, many level common electric voltage selects circuit to receive first common electric voltage, second common electric voltage and control signal, when detecting display pattern that controller detects array of display and be Window shutdown picture, many level common electric voltage selects circuit to export the common electrical pole plate that first common electric voltage and second common electric voltage are given array of display.
The present invention also provides a kind of method of outputting common voltage, and this method comprises the display pattern that detects array of display and when display pattern is specific picture, provides a plurality of different common voltages each attached common electrical pole plate to array of display.
Description of drawings
Fig. 1 shows the conventional thin film transistor liquid crystal indicator;
Fig. 2 shows the graph of a relation of common electric voltage and position of display unit;
Fig. 3 shows display device according to an embodiment of the invention; And
Fig. 4 shows the process flow diagram of controlling outputting common voltage according to another embodiment of the present invention.
[primary clustering symbol description]
100～thin-film transistor LCD device;
110,340～source electrode drive circuit;
120,350～gate driver circuit;
130,360～array of display;
141, A
11... A
Nn～display unit;
142, T
11～thin film transistor (TFT);
143, C
11～storage capacitors;
144, L
11～luminescence unit;
300～display device;
310～time schedule controller;
315～detection controller;
320～public voltage generating circuit;
330～many level common electric voltage is selected circuit;
362～common electrical pole plate;
362-1,362-2...362-n～attached common electrical pole plate;
V
1The common electric voltage in～A district;
V
2The common electric voltage in～B district;
V
3The common electric voltage in～C district;
Vcom, Vcom
1, Vcom
2... Vcom
n～common electric voltage;
X
1, X
2... X
3～source signal line;
Y
1, Y
2... Y
n～scan signal line.
Embodiment
For above and other objects of the present invention, feature and advantage can be become apparent, cited below particularlyly go out preferred embodiment, and conjunction with figs., be described in detail below:
Fig. 3 shows display device 300 according to an embodiment of the invention, and display device 300 comprises time schedule controller (Timing Controller) 310, public voltage generating circuit (CommonVoltage Generator) 320, many level common electric voltage selection circuit (Multi-LevelCommon Voltage Selecting Circuit) 330, source electrode drive circuit (Source DrivingCircuit) 340, gate driver circuit (Gate Driving Circuit) 350 and array of display (Display Array) 360.Time schedule controller 310 comprises detection controller (DetectionController) 315, and array of display 360 comprises a plurality of display unit (A
11～A
Nn), each display unit respectively has switch, storage capacitors and luminescence unit, and wherein the storage capacitors of each display unit and luminescence unit all are coupled between the switch and common electrical pole plate 362 of each display unit, with display unit A
11Be example, display unit A
11Comprise switch T
11, storage capacitors C
11With luminescence unit L
11, storage capacitors C wherein
11With luminescence unit L
11Be coupled to switch T
11And between the common electrical pole plate 362.In addition, common electrical pole plate 362 is that (362-1 362-2...362-n) is formed, so display unit (A by attached common electrical pole plate
11～A
N1) couple attached common electrical pole plate 362-1, display unit (A
12～A
N2) coupling attached common electrical pole plate 362-2, the rest may be inferred for other.
When display device 300 received shows signal with display frame, source electrode drive circuit 340 was via a plurality of source electrode signal wire (X
1～X
n) a plurality of data-signals each display unit (A to array of display 360 is provided
11～A
Nn), 350 of gate driver circuits are via scan signal line (Y
1～Y
n) a plurality of sweep signals each display unit (A to array of display 360 is provided
11～A
Nn).Select circuit 330 for many level common electric voltage because the best common electric voltage difference of the display unit of each position, public voltage generating circuit 320 can produce a plurality of common electric voltages, many level common electric voltage selects circuit 330 that common electric voltage (Vcom can be provided respectively
1, Vcom
2... Vcom
n) give the display unit (A of diverse location
11～A
Nn), to reduce the film flicker phenomenon (Flicker) of array of display 130, many level common electric voltage selects circuit 330 also can only provide single common electric voltage to each display unit (A
11～A
Nn).When detecting display pattern that controller 315 detects array of display 360 and be specific picture (for example: Window shut down picture), detect 315 of controllers transmit control signal at the most the level common electric voltage select circuit 330 to select circuit 330 difference outputting common voltage (Vcom to control many level common electric voltage
1, Vcom
2... Vcom
n) to the common electrical pole plate of diverse location, according to one embodiment of the invention, many level common electric voltage is selected circuit 330 outputting common voltage (Vcom respectively
1, Vcom
2... Vcom
n) (362-1,362-2...362-n), as shown in Figure 3, so the display unit of different rows couples the common electric voltage of different voltage levels to give corresponding attached common electrical pole plate.When the display pattern that detects controller 315 detection array of display 360 is not specific picture, many level common electric voltage is selected circuit 330 only to export single common electric voltage according to the control signal that detects controller 315 and is given all attached common electrical pole plate (362-1,362-2...362-n), so each display unit receives the common electric voltage with voltage level.
Fig. 4 shows the process flow diagram of controlling outputting common voltage according to another embodiment of the present invention, detecting controller 315 detects the display pattern of array of display 360 and transmits control signal to many level common electric voltage selection circuit 330 (step S420), when detecting display pattern that controller 315 detects array of display 360 and be specific picture, detect 315 of controllers transmit control signal at the most the level common electric voltage select circuit 330 to select circuit 330 outputting common voltage (Vcom respectively to control many level common electric voltage
1, Vcom
2... Vcom
n) give the common electrical pole plate (step S430) of diverse location, with the crosstalk phenomenon (CrossTalk) of each pixel of reducing array of display 360.When the display pattern that detects controller 315 detection array of display 360 is not specific picture, many level common electric voltage is selected circuit 330 only to export single common electric voltage according to the control signal that detects controller 315 and is given all attached common electrical pole plate (362-1,362-2...362-n), so each display unit receives the common electric voltage (step S440) with voltage level.
Though the present invention discloses above preferred embodiment; yet it is not in order to limit the present invention; the any technician in this area is under the situation that does not break away from the spirit and scope of the present invention; should carry out a little and change and retouching, so protection scope of the present invention should be looked subsidiary claim and is as the criterion.
Claims (20)
1. display device comprises:
The common electrical pole plate;
Array of display, it is corresponding to described common electrical pole plate;
Time schedule controller, it is in order to detecting the display pattern of described array of display, and transmits control signal;
Public voltage generating circuit, it is in order to produce first common electric voltage and second common electric voltage; And
Many level common electric voltage is selected circuit, and it receives described first common electric voltage, described second common electric voltage and described control signal.
2. display device as claimed in claim 1, wherein, described many level common electric voltage selects circuit according to described control signal, exports described first common electric voltage to described common electrical pole plate.
3. display device as claimed in claim 2, wherein, when described display pattern was specific picture, described many level common electric voltage selected circuit to export described second common electric voltage to described common electrical pole plate.
4. display device as claimed in claim 3, wherein, described specific picture is the shutdown picture.
5. display device as claimed in claim 1, wherein, described common electrical pole plate comprises partly common electrical pole plate of the first part common electrical pole plate and second.
6. display device as claimed in claim 5, wherein, described many level common electric voltage selects circuit to export described first common electric voltage to the described first part common electrical pole plate.
7. display device as claimed in claim 5, wherein, described many level common electric voltage selects circuit to export described second common electric voltage to the described second part common electrical pole plate.
8. display device as claimed in claim 5, wherein, described array of display comprises first group of display unit and second group of display unit.
9. display device as claimed in claim 8, wherein, the described first part common electrical pole plate couples described first group of display unit.
10. display device as claimed in claim 8, wherein, the described second part common electrical pole plate couples described second group of display unit.
11. display device as claimed in claim 1 also comprises:
Source electrode drive circuit, it is in order to provide a plurality of data-signals to described array of display; And
Gate driver circuit, it is in order to provide a plurality of sweep signals to described array of display.
12. display device as claimed in claim 11, wherein, described array of display has a plurality of display units, is coupled to described common electrical pole plate.
13. display device as claimed in claim 12, wherein, described display unit comprises switch, luminescence unit and storage capacitors.
14. display device as claimed in claim 13, wherein, described luminescence unit and described storage capacitors are coupled between described common electrical pole plate and the described switch.
15. display device as claimed in claim 13, wherein, described switch receives described data-signal and described sweep signal.
16. display device as claimed in claim 1, wherein, described time schedule controller comprises the detection controller, in order to detecting the described display pattern of described array of display, and transmits described control signal.
17. the method for an outputting common voltage comprises:
The common electrical pole plate is provided, and it has a plurality of attached common electrical pole plates;
Array of display is provided, and it is corresponding to described common electrical pole plate; And
Whether the display pattern that detects described array of display is specific picture.
18. the method for outputting common voltage as claimed in claim 17 wherein, when described display pattern is described specific picture, provides a plurality of different common electric voltages to described attached common electrical pole plate.
19. the method for outputting common voltage as claimed in claim 17 wherein, when described display pattern is not described specific picture, provides single common electric voltage to described attached common electrical pole plate.
20. the method for outputting common voltage as claimed in claim 17, wherein, described specific picture is the shutdown picture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101659168A CN101202018A (en) | 2006-12-11 | 2006-12-11 | Method for outputting common voltage and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101659168A CN101202018A (en) | 2006-12-11 | 2006-12-11 | Method for outputting common voltage and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101202018A true CN101202018A (en) | 2008-06-18 |
Family
ID=39517158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101659168A Pending CN101202018A (en) | 2006-12-11 | 2006-12-11 | Method for outputting common voltage and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101202018A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101726939B (en) * | 2008-10-10 | 2011-06-29 | 华映视讯（吴江）有限公司 | Liquid crystal display panel |
| WO2013181907A1 (en) * | 2012-06-07 | 2013-12-12 | 上海天马微电子有限公司 | Active matrix display panel driving method and apparatus, and 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 |
| CN104766578A (en) * | 2015-04-14 | 2015-07-08 | 深圳市华星光电技术有限公司 | Multi-voltage generation device and liquid crystal display |
| WO2016070459A1 (en) * | 2014-11-07 | 2016-05-12 | 深圳市华星光电技术有限公司 | Liquid crystal display device |
| CN105976782A (en) * | 2016-07-15 | 2016-09-28 | 武汉华星光电技术有限公司 | Liquid crystal display device and driving method thereof |
-
2006
- 2006-12-11 CN CNA2006101659168A patent/CN101202018A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101726939B (en) * | 2008-10-10 | 2011-06-29 | 华映视讯（吴江）有限公司 | Liquid crystal display panel |
| WO2013181907A1 (en) * | 2012-06-07 | 2013-12-12 | 上海天马微电子有限公司 | Active matrix display panel driving method and apparatus, and display |
| US9368085B2 (en) | 2012-06-07 | 2016-06-14 | Shanghai Tianma Micro-electronics Co., Ltd. | Method and apparatus for driving active matrix display panel, and 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 |
| WO2016070459A1 (en) * | 2014-11-07 | 2016-05-12 | 深圳市华星光电技术有限公司 | Liquid crystal display device |
| GB2555151A (en) * | 2014-11-07 | 2018-04-25 | Shenzhen China Star Optoelect | Liquid crystal display device |
| RU2654350C1 (en) * | 2014-11-07 | 2018-05-17 | Шэньчжэнь Чайна Стар Оптоэлектроникс Текнолоджи Ко., Лтд. | Liquid crystalline display |
| GB2555151B (en) * | 2014-11-07 | 2021-01-13 | Shenzhen China Star Optoelect | Liquid crystal display |
| CN104766578A (en) * | 2015-04-14 | 2015-07-08 | 深圳市华星光电技术有限公司 | Multi-voltage generation device and liquid crystal display |
| WO2016165164A1 (en) * | 2015-04-14 | 2016-10-20 | 深圳市华星光电技术有限公司 | Multi-voltage generation apparatus and liquid crystal display |
| CN104766578B (en) * | 2015-04-14 | 2018-06-15 | 深圳市华星光电技术有限公司 | A kind of multivoltage generation device and liquid crystal display |
| CN105976782A (en) * | 2016-07-15 | 2016-09-28 | 武汉华星光电技术有限公司 | Liquid crystal display device and driving method thereof |
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Open date: 20080618 |