CN101707054A - Liquid crystal display (LCD) device and driving method thereof - Google Patents

Liquid crystal display (LCD) device and driving method thereof Download PDF

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Publication number
CN101707054A
CN101707054A CN200910247190A CN200910247190A CN101707054A CN 101707054 A CN101707054 A CN 101707054A CN 200910247190 A CN200910247190 A CN 200910247190A CN 200910247190 A CN200910247190 A CN 200910247190A CN 101707054 A CN101707054 A CN 101707054A
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reference voltage
liquid crystal
high reference
crystal indicator
voltage
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CN200910247190A
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程仲升
徐兆庆
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AU Optronics Corp
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AU Optronics Corp
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Abstract

The invention relates to a liquid crystal display (LCD) device which comprises a reference voltage generator, a voltage selector, a time schedule controller, a voltage level shifter, a gate driving circuit and a pixel array, wherein the reference voltage generator is used for providing a first high reference voltage and a second high reference voltage; the voltage selector is used for selecting the first high reference voltage or the second high reference voltage as the high reference voltage; the time schedule controller is used for providing a scanning control signal; the voltage level shifter is used for generating a front driving signal according to the scanning control signal and the high reference voltage; the gate driving circuit is used for providing a plurality of gate signals according to the front driving signal; and the pixel array is used for displaying an image according to the plurality of gate signals.

Description

Liquid crystal indicator and driving method thereof
Technical field
The present invention refers to a kind of liquid crystal indicator and driving method thereof of adjusting reference voltage especially relevant for a kind of liquid crystal indicator and driving method thereof.
Background technology
Liquid crystal indicator (Liquid Crystal Display; LCD) be present widely used a kind of flat-panel screens, it has, and external form is frivolous, power saving and advantage such as radiationless.The principle of work of liquid crystal indicator is the ordered state that the voltage difference that utilize to change the liquid crystal layer two ends changes the liquid crystal molecule in the liquid crystal layer, in order to change the light transmission of liquid crystal layer, to cooperate backlight module or surround lighting again the light source that provided with display image.Fig. 1 is the synoptic diagram of known liquid crystal indicator.As shown in Figure 1, liquid crystal indicator 100 comprises reference voltage generator 110, time schedule controller (Timing Controller) 140, voltage level shifter 150, source electrode drive circuit 160, gate driver circuit 170 and pixel-array unit 180.Reference voltage generator 110 is used to provide high reference voltage Vgh and low reference voltage Vgl.Time schedule controller 140 is used to provide the required scan control signal Sx of gate driver circuit 170 runnings.
Voltage level shifter 150 is used for being fed into gate driver circuit 170 according to scan control signal Sx, high reference voltage Vgh and low reference voltage Vgl to produce pre-driver signal Si.Gate driver circuit 170 according to pre-driver signal Si so that a plurality of signals to be provided.Source electrode drive circuit 160 is used to provide a plurality of data-signals, and pixel-array unit 180 promptly according to a plurality of signals and a plurality of data-signal to drive a plurality of pixel PX, display image according to this.In the design of liquid crystal indicator 100, in order to reduce manufacturing cost, gate driver circuit 170 is integrated in the display panel 185 that comprises pixel-array unit 180, that is, develops into mainstream technology gradually based on GOA (Gate-driver On Array) framework.Yet in the GOA framework, the multi-stage shift register SR1～SRn of gate driver circuit 170 is arranged at the quite long and narrow frame region of display panel 185 in regular turn corresponding to many gate lines 175, that is is not that productive set is in very little chip area.So, the high level voltage of the signal that afterbody shift register SRn is produced may significantly be lower than the high level voltage of the signal that first order shift register SR1 produced, and like this then signal that afterbody shift register SRn is produced possibly can't effectively drive corresponding a plurality of pixel PX and write running with normal execution data-signal.Generally speaking, the too low situation of high level voltage all may take place in the signal that several grades of shift registers produced at last.In addition, when liquid crystal indicator 100 start just, the too low situation of the high level voltage of above-mentioned signal can be comparatively serious.Slack-off because the opening speed of thin film transistor (TFT) meeting Yin Wendu reduces in addition, so when liquid crystal indicator 100 was started shooting at low temperatures, the too low situation of the high level voltage of above-mentioned signal was more serious again.In other words, pixel-array unit 180 possibly can't normal operation immediately when liquid crystal indicator 100 low temperature are started shooting.
Summary of the invention
According to embodiments of the invention, it discloses a kind of liquid crystal indicator of adjusting reference voltage. and this kind liquid crystal indicator comprises reference voltage generator, voltage selector, control module, time schedule controller, voltage level shifter, gate driver circuit and pixel-array unit. reference voltage generator is used to provide the first high reference voltage and the second high reference voltage that is lower than the first high reference voltage. and voltage selector is electrically connected on reference voltage generator to receive the first high reference voltage and the second high reference voltage, being used for choosing the first high reference voltage or the second high reference voltage as high reference voltage according to control signal. control module is electrically connected on voltage selector, being used to provide control signal. time schedule controller is used to provide scan control signal. and voltage level shifter is electrically connected on time schedule controller and voltage selector, being used for according to scan control signal and high reference voltage to produce the pre-driver signal. gate driver circuit is electrically connected on voltage level shifter, being used for according to the pre-driver signal so that a plurality of signals to be provided. pixel-array unit is electrically connected on gate driver circuit, be used for according to a plurality of signals with display image. in the running of liquid crystal indicator, after the liquid crystal indicator start process schedule time, high reference voltage changes to the second high reference voltage from the first high reference voltage.
According to embodiments of the invention, it also discloses a kind of liquid crystal indicator of adjusting reference voltage.This kind liquid crystal indicator comprises reference voltage generator, regulated power supply module, time schedule controller, voltage level shifter, gate driver circuit and pixel-array unit.Reference voltage generator is used for according to supply voltage so that high reference voltage and low reference voltage to be provided.The regulated power supply module is electrically connected on reference voltage generator, is used to provide supply voltage.After the liquid crystal indicator start process schedule time, the supply voltage that the regulated power supply module is provided changes to second voltage that is lower than first voltage from first voltage.Time schedule controller is used to provide scan control signal.Voltage level shifter is electrically connected on time schedule controller and reference voltage generator, is used for according to scan control signal, high reference voltage and low reference voltage to produce the pre-driver signal.Gate driver circuit is electrically connected on voltage level shifter, is used for according to the pre-driver signal so that a plurality of signals to be provided.Pixel-array unit is electrically connected on gate driver circuit, is used for according to a plurality of signals with display image.
The present invention also discloses a kind of liquid crystal display apparatus driving circuit, and it comprises: in the schedule time after the liquid crystal indicator start, provide high reference voltage and low reference voltage, wherein high reference voltage is the first high reference voltage; In the schedule time, drive the pixel-array unit of liquid crystal indicator with carries out image demonstration running according to the first high reference voltage and low reference voltage; In through after the schedule time, high reference voltage is changed to the second high reference voltage that is lower than the first high reference voltage from the first high reference voltage; And, drive pixel-array unit with carries out image demonstration running according to the second high reference voltage and low reference voltage in through after the schedule time.
Description of drawings
Fig. 1 is the synoptic diagram of known liquid crystal indicator.
Fig. 2 is the structural representation of the liquid crystal indicator of first embodiment of the invention.
Fig. 3 is the structural representation of the liquid crystal indicator of second embodiment of the invention.
Fig. 4 is the structural representation of the liquid crystal indicator of third embodiment of the invention.
Fig. 5 is the structural representation of the liquid crystal indicator of fourth embodiment of the invention.
Fig. 6 is the process flow diagram of the liquid crystal display apparatus driving circuit of one embodiment of the invention.
[main element label declaration]
??100、200、300、400、500 Liquid crystal indicator
??110、210、410 Reference voltage generator
??140、240、340、440、540 Time schedule controller
??150、250、450 Voltage level shifter
??100、200、300、400、500 Liquid crystal indicator
??160、260、460 Source electrode drive circuit
??170、270、470 Gate driver circuit
??180、280、480 Pixel-array unit
??185、285、485 Display panel
??220 Voltage selector
??221 First switch
??222 Second switch
??230、330、430、530 Control module
??231、431 Timer
??265 Data line
??275 Gate line
??341、541 The picture counter
??420、520 The regulated power supply module
??425、525 The supply voltage generation unit
??900 Flow process
??PX Pixel
??S910～S940 Step
??Sc Control signal
??Si The pre-driver signal
??Sn Count signal
??100、200、300、400、500 Liquid crystal indicator
??SR1、SRn Shift register
??Sx Scan control signal
??Vck1 First clock signal
??Vck2 The second clock signal
??Vdd Supply voltage
??Vgh High reference voltage
??Vgh1 The first high reference voltage
??Vgh2 The second high reference voltage
??Vgl Low reference voltage
??Vst Initial pulse signals
Embodiment
Hereinafter according to liquid crystal indicator of the present invention and driving method thereof, cooperate appended graphic elaborating especially exemplified by embodiment, but the embodiment that is provided not is the scope that contains in order to restriction the present invention, carry out precedence and the method flow number of steps is more non-in order to limit it, any execution flow process that reconfigures by method step, the method with impartial effect that produces is all the scope that the present invention is contained.
Fig. 2 is the structural representation of the liquid crystal indicator of first embodiment of the invention.As shown in Figure 2, liquid crystal indicator 200 comprises reference voltage generator 210, voltage selector 220, control module 230, time schedule controller 240, voltage level shifter 250, source electrode drive circuit 260, gate driver circuit 270 and pixel-array unit 280.Pixel-array unit 280 comprises a plurality of pixel PX, is electrically connected on source electrode drive circuit 260 via many data lines 265, is electrically connected on gate driver circuit 270 via many gate lines 275 in addition.Gate driver circuit 270 can be integrated in the display panel 285 that comprises pixel-array unit 280.
Reference voltage generator 210 is used to provide the first high reference voltage Vgh1, be lower than the second high reference voltage Vgh2 of the first high reference voltage Vgh1, and low reference voltage Vgl. voltage selector 220 is electrically connected on reference voltage generator 210 to receive the first high reference voltage Vgh1 and the second high reference voltage Vgh2, be used for choosing the first high reference voltage Vgh1 or the second high reference voltage Vgh2 is electrically connected on voltage selector 220 as high reference voltage Vgh. control module 230 according to control signal Sc, be used to provide control signal Sc. in the running of liquid crystal indicator 200, through after the schedule time, voltage selector 220 is in order to change to second high reference voltage Vgh2. with high reference voltage Vgh from the first high reference voltage Vgh1 according to control signal Sc in start
Time schedule controller 240 is used to provide the required scan control signal Sx of gate driver circuit 270 runnings.Voltage level shifter 250 is electrically connected on time schedule controller 240, voltage selector 220 and reference voltage generator 210, is used for according to scan control signal Sx, high reference voltage Vgh and low reference voltage Vgl with generation pre-driver signal Si.The second clock signal Vck2 that pre-driver signal Si can comprise initial pulse signals Vst, the first clock signal Vck1 and be in reverse to the first clock signal Vck1, and gate driver circuit 270 promptly produces a plurality of signals to scan many gate lines 275 according to pre-driver signal Si.Source electrode drive circuit 260 is used to provide a plurality of data-signals, is fed into pixel-array unit 280 via many data lines 265.Pixel-array unit 280 is used for controlling according to a plurality of signals the running that writes of a plurality of data-signals, drives a plurality of pixel PX according to this and display image.
In the embodiment shown in Figure 2, voltage selector 220 comprises first switch 221 and second switch 222, and control module 230 comprises timer 2 31.First switch 221 is electrically connected on control module 230, reference voltage generator 210 and voltage level shifter 250, is used for according to control signal Sc the first high reference voltage Vgh1 being output as high reference voltage Vgh.Second switch 222 is electrically connected on control module 230, reference voltage generator 210 and voltage level shifter 250, is used for according to control signal Sc the second high reference voltage Vgh2 being output as high reference voltage Vgh.In the running of liquid crystal indicator 200, when control signal Sc was first state, second switch 222 was a cut-off state, and first switch 221 is a conducting state, is used for the first high reference voltage Vgh1 is output as high reference voltage Vgh.Perhaps, when control signal Sc was second state, first switch 221 was a cut-off state, and second switch 222 is a conducting state, is used for the second high reference voltage Vgh2 is output as high reference voltage Vgh.Timer 2 31 is used for after liquid crystal indicator 200 start, automatically performs the timing running producing timing signal, and control module 230 promptly according to timing signal so that control signal Sc to be provided.
From the above, start shooting through after the schedule times in liquid crystal indicator 200, control module 230 switches to second state with control signal Sc from first state according to timing signal, make first switch 221 switch to cut-off state according to this from conducting state, and make second switch 222 switch to conducting state, and then make high reference voltage Vgh change to the second high reference voltage Vgh2 from the first high reference voltage Vgh1 from cut-off state.That is, when liquid crystal indicator 200 starts, voltage selector 220 is chosen the first high reference voltage Vgh1 earlier as high reference voltage Vgh, with so that pixel-array unit 280 normal operation in real time to show high quality graphic, through after the schedule time, voltage selector 220 is chosen the second high reference voltage Vgh2 again as high reference voltage Vgh, is used for saving power consumption.In addition, be applicable to the first high reference voltage Vgh1 of low temperature environment by setting, when liquid crystal indicator 200 start shooting at low temperature, pixel-array unit 280 still normal operation immediately with the demonstration high quality graphic.
Fig. 3 is the structural representation of the liquid crystal indicator of second embodiment of the invention. as shown in Figure 3, the similar of liquid crystal indicator 300 is in liquid crystal indicator shown in Figure 2 200, main difference is control module 230 is replaced into control module 330, and time schedule controller 240 is replaced into time schedule controller 340. time schedule controllers 340 comprises the picture counter 341. picture counters 341 that are electrically connected on control module 330 and be used for after liquid crystal indicator 300 start, automatically perform picture counting running with produce 330 of count signal Sn. control modules according to count signal Sn with provide control signal Sc to voltage selector 220. behind the picture of liquid crystal indicator 300 start demonstration predetermined numbers, 330 of control modules switch to second state with control signal Sc from first state according to count signal Sn, make first switch 221 switch to cut-off state according to this from conducting state, and make second switch 222 switch to conducting state from cut-off state, and then make high reference voltage Vgh change to the second high reference voltage Vgh2 from the first high reference voltage Vgh1, the required time of picture that wherein shows predetermined number is the schedule time corresponding to above-mentioned liquid crystal indicator 200 runnings. all the other functional operations of liquid crystal indicator 300 are to be same as liquid crystal indicator 200, so during liquid crystal indicator 300 starts, even at low temperatures, pixel-array unit 280 still normal operation immediately to show high quality graphic.
Fig. 4 is the structural representation of the liquid crystal indicator of third embodiment of the invention.As shown in Figure 4, liquid crystal indicator 400 comprises reference voltage generator 410, regulated power supply module 420, time schedule controller 440, voltage level shifter 450, source electrode drive circuit 460, gate driver circuit 470 and pixel-array unit 480.Pixel-array unit 480 comprises a plurality of pixel PX, is electrically connected on source electrode drive circuit 460 via many data lines 465, is electrically connected on gate driver circuit 470 via many gate lines 475 in addition.Gate driver circuit 470 can be integrated in the display panel 485 that comprises pixel-array unit 480.
Regulated power supply module 420 is used to provide supply voltage Vdd to reference voltage generator 410.Reference voltage generator 410 is electrically connected on regulated power supply module 420, and being used for provides high reference voltage Vgh and low reference voltage Vgl according to supply voltage Vdd.In the running of liquid crystal indicator 400, after the start process schedule time, regulated power supply module 420 can change to second voltage that is lower than first voltage from first voltage with supply voltage Vdd, and the high reference voltage Vgh that reference voltage generator 410 is provided also and then changes to the second high reference voltage that is lower than the first high reference voltage from the first high reference voltage.
Time schedule controller 440 is used to provide the required scan control signal Sx of gate driver circuit 470 runnings.Voltage level shifter 450 is electrically connected on time schedule controller 440 and reference voltage generator 410, is used for according to scan control signal Sx, high reference voltage Vgh and low reference voltage Vgl with generation pre-driver signal Si.The second clock signal Vck2 that pre-driver signal Si can comprise initial pulse signals Vst, the first clock signal Vck1 and be in reverse to the first clock signal Vck1, and gate driver circuit 470 promptly produces a plurality of signals to scan many gate lines 475 according to pre-driver signal Si.Source electrode drive circuit 460 is used to provide a plurality of data-signals, is fed into pixel-array unit 480 via many data lines 465.Pixel-array unit 480 is used for controlling according to a plurality of signals the running that writes of a plurality of data-signals, drives a plurality of pixel PX according to this and display image.
In the embodiment shown in fig. 4, regulated power supply module 420 comprises control module 430 and supply voltage generation unit 425.Control module 430 is used to provide control signal Sc.Supply voltage generation unit 425 is electrically connected on control module 430 and reference voltage generator 410, is used for according to control signal Sc to produce supply voltage Vdd.In the running of liquid crystal indicator 400, when control module 430 provides the control signal Sc of tool first state, the supply voltage Vdd that supply voltage generation unit 425 is produced is first voltage, and the high reference voltage Vgh that reference voltage generator 410 is provided is the first high reference voltage.Or, when control module 430 provided the control signal Sc of tool second state, the supply voltage Vdd that supply voltage generation unit 425 is produced was second voltage, and the high reference voltage Vgh that reference voltage generator 410 is provided is the second high reference voltage.Control module 430 comprises timer 431, and timer 431 is used for after liquid crystal indicator 400 start, automatically performs the timing running producing timing signal, and control module 430 promptly according to timing signal so that control signal Sc to be provided.
From the above, start shooting through after the schedule times in liquid crystal indicator 400, control module 430 switches to second state with control signal Sc from first state according to timing signal, make supply voltage Vdd change to second voltage according to this, and then make high reference voltage Vgh change to the second high reference voltage from the first high reference voltage from first voltage.That is, when liquid crystal indicator 400 starts, reference voltage generator 410 provides the first high reference voltage as high reference voltage Vgh earlier, with so that pixel-array unit 480 normal operation in real time to show high quality graphic, through after the schedule time, reference voltage generator 410 provides the second high reference voltage as high reference voltage Vgh again, is used for saving power consumption.In addition, be applicable to the first high reference voltage of low temperature environment by setting, when liquid crystal indicator 400 start shooting at low temperature, pixel-array unit 480 still normal operation immediately with the demonstration high quality graphic.
Fig. 5 is the structural representation of the liquid crystal indicator of fourth embodiment of the invention. as shown in Figure 5, the similar of liquid crystal indicator 500 is in liquid crystal indicator shown in Figure 4 400, main difference is regulated power supply module 420 is replaced into regulated power supply module 520, and time schedule controller 440 is replaced into time schedule controller 540. regulated power supply modules 520 comprises control module 530 and be used to provide control signal Sc. supply voltage generation unit 525 with supply voltage generation unit 525. control modules 530 and be electrically connected on control module 530 and reference voltage generator 410, be used for according to control signal Sc to produce supply voltage Vdd.
Time schedule controller 540 comprises the picture counter 541 that is electrically connected on control module 530.Picture counter 541 is used for after liquid crystal indicator 500 starts, automatically performs the running of picture counting to produce count signal Sn.530 of control modules according to count signal Sn to provide control signal Sc to supply voltage generation unit 525.After liquid crystal indicator 500 starts show the picture of predetermined number, 530 of control modules switch to second state with control signal Sc from first state according to count signal Sn, make supply voltage Vdd change to second voltage according to this from first voltage, and then making high reference voltage Vgh change to the second high reference voltage from the first high reference voltage, the required time of picture that wherein shows predetermined number is the schedule time corresponding to above-mentioned liquid crystal indicator 400 runnings.All the other functional operations of liquid crystal indicator 500 are to be same as liquid crystal indicator 400, thus during liquid crystal indicator 500 start, even at low temperatures, pixel-array unit 480 still normal operation immediately to show high quality graphic.
Fig. 6 is the process flow diagram of the liquid crystal display apparatus driving circuit of one embodiment of the invention.Flow process 900 shown in Figure 6 is the liquid crystal display apparatus driving circuit of the liquid crystal indicator 500 of the liquid crystal indicator 400 of liquid crystal indicator 300, Fig. 4 of liquid crystal indicator 200, Fig. 3 based on Fig. 2 or Fig. 5.Liquid crystal display apparatus driving circuit shown in the flow process 900 comprises the following step:
Step S910: in the schedule time after liquid crystal indicator start, provide a high reference voltage and a low reference voltage, wherein this high reference voltage is one first high reference voltage;
Step S920: in this schedule time, show running with carries out image according to this first high reference voltage and a pixel-array unit that should low reference voltage drive this liquid crystal indicator;
Step S930:, this high reference voltage is changed to the one second high reference voltage that is lower than this first high reference voltage from this first high reference voltage in through after this schedule time; And
Step S940: in through after this schedule time, according to this second high reference voltage with should low reference voltage drive this pixel-array unit and showed running with carries out image.
In the liquid crystal display apparatus driving circuit based on the liquid crystal indicator 500 of the liquid crystal indicator 300 of Fig. 3 or Fig. 5,900 described these schedule times of flow process are the required time of picture that liquid crystal indicator shows predetermined number.In liquid crystal display apparatus driving circuit based on the liquid crystal indicator 500 of the liquid crystal indicator 400 of Fig. 4 or Fig. 5, step S930 is described to change to this second high reference voltage that is lower than this first high reference voltage with this high reference voltage from this first high reference voltage, for a supply voltage is changed to one second voltage that is lower than this first voltage from one first voltage, make this high reference voltage change to this second high reference voltage that is lower than this first high reference voltage from this first high reference voltage according to this.
In sum, liquid crystal indicator of the present invention is in the schedule time after start, carry out the driving running with real-time demonstration high quality graphic according to the first high reference voltage, after the schedule time, carry out the driving running to save electric power consumption again according to the second high reference voltage that is lower than the first high reference voltage.In addition, by setting the first high reference voltage corresponding to low ambient temperature, even liquid crystal indicator of the present invention when low temperature start shooting, still normal operation immediately is with the demonstration high quality graphic.
Though the present invention discloses as above with embodiment; right its is not in order to limit the present invention; any have a technical field of the invention know the knowledgeable usually; without departing from the spirit and scope of the present invention; when can doing various changes and retouching, so protection scope of the present invention is as the criterion when looking appended the claim scope person of defining.

Claims (19)

1. liquid crystal indicator, it comprises:
Reference voltage generator is used to provide the first high reference voltage and the second high reference voltage that is lower than this first high reference voltage;
Voltage selector is electrically connected on this reference voltage generator to receive this first high reference voltage and this second high reference voltage, is used for choosing this first high reference voltage or this second high reference voltage as high reference voltage according to control signal;
Control module is electrically connected on this voltage selector, is used to provide this control signal;
Time schedule controller is used to provide scan control signal;
Voltage level shifter is electrically connected on this time schedule controller and this voltage selector, is used for according to this scan control signal and this high reference voltage to produce the pre-driver signal;
Gate driver circuit is electrically connected on this voltage level shifter, is used for according to this pre-driver signal so that a plurality of signals to be provided; And
Pixel-array unit is electrically connected on this gate driver circuit, is used for according to these a plurality of signals with display image;
Wherein after this liquid crystal indicator start process schedule time, this high reference voltage changes to this second high reference voltage from this first high reference voltage.
2. liquid crystal indicator according to claim 1, wherein this voltage selector comprises:
First switch is electrically connected on this control module, this reference voltage generator and this voltage level shifter, is used for this first high reference voltage being output as this high reference voltage according to this control signal, and
Second switch is electrically connected on this control module, this reference voltage generator and this voltage level shifter, is used for according to this control signal this second high reference voltage being output as this high reference voltage;
Wherein when this control signal is first state, this first switch conduction is to be output as this high reference voltage with this first high reference voltage, when this control signal was second state, this second switch conducting was to be output as this high reference voltage with this second high reference voltage.
3. liquid crystal indicator according to claim 2, wherein after this liquid crystal indicator start this schedule time of process, this control signal switches to this second state from this first state.
4. liquid crystal indicator according to claim 2, wherein after this liquid crystal indicator start shows the picture of predetermined number, this control signal switches to this second state from this first state, and this schedule time is for showing the required time of picture of this predetermined number.
5. liquid crystal indicator according to claim 1, wherein this control module comprises:
Timer is used for automatically performing the timing running to produce timing signal after this liquid crystal indicator start;
Wherein this control module according to this timing signal so that this control signal to be provided.
6. liquid crystal indicator according to claim 1, wherein this time schedule controller comprises:
The picture counter is electrically connected on this control module, and this picture counter automatically performs the running of picture counting to produce count signal after this liquid crystal indicator start;
Wherein this control module according to this count signal so that this control signal to be provided.
7. liquid crystal indicator according to claim 1, wherein this gate driver circuit and this pixel-array unit are integrated in a display panel.
8. liquid crystal indicator according to claim 1 also comprises:
Source electrode drive circuit is electrically connected on this pixel-array unit, is used to provide a plurality of data-signals with display image;
Wherein this pixel-array unit is controlled the running that writes of these a plurality of data-signals according to these a plurality of signals.
9. liquid crystal indicator, it comprises:
Reference voltage generator is used for according to supply voltage so that high reference voltage and low reference voltage to be provided;
The regulated power supply module is electrically connected on this reference voltage generator, is used to provide this supply voltage, and wherein after this liquid crystal indicator start process schedule time, this supply voltage changes to second voltage that is lower than this first voltage from first voltage;
Time schedule controller is used to provide scan control signal;
Voltage level shifter is electrically connected on this time schedule controller and this reference voltage generator, is used for according to this scan control signal, this high reference voltage and is somebody's turn to do hanging down reference voltage to produce the pre-driver signal;
Gate driver circuit is electrically connected on this voltage level shifter, is used for according to this pre-driver signal so that a plurality of signals to be provided; And
Pixel-array unit is electrically connected on this gate driver circuit, is used for according to these a plurality of signals with display image.
10. liquid crystal indicator according to claim 9, wherein this regulated power supply module comprises:
Control module is used to provide control signal; And
The supply voltage generation unit is electrically connected on this control module and this reference voltage generator, is used for producing this supply voltage according to this control signal.
11. liquid crystal indicator according to claim 10, wherein after this liquid crystal indicator start this schedule time of process, this control signal switches to second state from first state, makes this supply voltage change to this second voltage from this first voltage according to this.
12. liquid crystal indicator according to claim 10, wherein after this liquid crystal indicator start shows the picture of predetermined number, this control signal switches to second state from first state, make this supply voltage change to this second voltage from this first voltage according to this, this schedule time is for showing the required time of picture of this predetermined number.
13. liquid crystal indicator according to claim 10, wherein this control module comprises:
Timer is used for automatically performing the timing running to produce timing signal after this liquid crystal indicator start;
Wherein this control module according to this timing signal so that this control signal to be provided.
14. liquid crystal indicator according to claim 10, wherein this time schedule controller comprises:
The picture counter is electrically connected on this control module, and this picture counter automatically performs the running of picture counting to produce count signal after this liquid crystal indicator start;
Wherein this control module according to this count signal so that this control signal to be provided.
15. liquid crystal indicator according to claim 9, wherein this gate driver circuit and this pixel-array unit are integrated in a display panel.
16. liquid crystal indicator according to claim 9 also comprises:
Source electrode drive circuit is electrically connected on this pixel-array unit, is used to provide a plurality of data-signals with display image;
Wherein this pixel-array unit is controlled the running that writes of these a plurality of data-signals according to these a plurality of signals.
17. a liquid crystal display apparatus driving circuit, it comprises:
In the schedule time after the liquid crystal indicator start, provide high reference voltage and low reference voltage, wherein this high reference voltage is the first high reference voltage;
In this schedule time, show running with carries out image according to this first high reference voltage and the pixel-array unit that should low reference voltage drive this liquid crystal indicator;
In through after this schedule time, this high reference voltage is changed to the second high reference voltage that is lower than this first high reference voltage from this first high reference voltage; And
In through after this schedule time, according to this second high reference voltage with should low reference voltage drive this pixel-array unit and showed running with carries out image.
18. liquid crystal display apparatus driving circuit according to claim 17 wherein should the schedule time shows required time of picture of predetermined number for this liquid crystal indicator.
19. liquid crystal display apparatus driving circuit according to claim 17, wherein this high reference voltage is changed to this second high reference voltage that is lower than this first high reference voltage from this first high reference voltage, for supply voltage is changed to second voltage that is lower than this first voltage from first voltage, make this high reference voltage change to this second high reference voltage that is lower than this first high reference voltage from this first high reference voltage according to this.
CN200910247190A 2009-12-02 2009-12-02 Liquid crystal display (LCD) device and driving method thereof Pending CN101707054A (en)

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CN101976553A (en) * 2010-11-04 2011-02-16 华映视讯（吴江）有限公司 Liquid crystal drive device and method for improving starting-up delay, and time sequence control circuit
CN101976555A (en) * 2010-11-09 2011-02-16 华映视讯（吴江）有限公司 Liquid crystal display device and driving method thereof
CN101976551A (en) * 2010-10-19 2011-02-16 友达光电股份有限公司 Display driving circuit, liquid crystal display and display driving method
CN101996562A (en) * 2010-11-15 2011-03-30 华映视讯（吴江）有限公司 Display device and driving method
CN102034453A (en) * 2010-12-30 2011-04-27 福建华映显示科技有限公司 Operating voltage switching system of liquid crystal panel and switching method thereof
CN102122466A (en) * 2010-12-30 2011-07-13 友达光电股份有限公司 Liquid crystal display device and driving method thereof
US8395612B2 (en) 2010-09-29 2013-03-12 Au Optronics Corp. Display driving circuit and display driving circuit
TWI424423B (en) * 2010-10-20 2014-01-21 Chunghwa Picture Tubes Ltd Liquid crystal display device and method for driving the same
US8704815B2 (en) 2010-10-27 2014-04-22 Chunghwa Picture Tubes, Ltd. Display device capable of switching gate high voltage
CN104240671A (en) * 2014-07-07 2014-12-24 友达光电股份有限公司 Pixel circuit, control method thereof and display device with pixel circuit
CN108447451A (en) * 2018-01-15 2018-08-24 友达光电股份有限公司 Display device
CN109346026A (en) * 2018-12-21 2019-02-15 深圳市华星光电技术有限公司 The driving device and liquid crystal display of liquid crystal display panel
CN111341243A (en) * 2020-04-10 2020-06-26 Tcl华星光电技术有限公司 Display device
CN112967695A (en) * 2021-03-19 2021-06-15 武汉京东方光电科技有限公司 Driving device and driving method of liquid crystal display module and liquid crystal display device

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CN101950520B (en) * 2010-08-25 2012-12-26 友达光电股份有限公司 Level shifter, generation method of clock output signal and plane display device thereof
US8395612B2 (en) 2010-09-29 2013-03-12 Au Optronics Corp. Display driving circuit and display driving circuit
CN101976551A (en) * 2010-10-19 2011-02-16 友达光电股份有限公司 Display driving circuit, liquid crystal display and display driving method
CN101976551B (en) * 2010-10-19 2014-06-04 友达光电股份有限公司 Display driving circuit, liquid crystal display and display driving method
US8847869B2 (en) 2010-10-20 2014-09-30 Chunghwa Picture Tubes, Ltd. Liquid crystal display device and method for driving the same
TWI424423B (en) * 2010-10-20 2014-01-21 Chunghwa Picture Tubes Ltd Liquid crystal display device and method for driving the same
US8704815B2 (en) 2010-10-27 2014-04-22 Chunghwa Picture Tubes, Ltd. Display device capable of switching gate high voltage
CN101976553A (en) * 2010-11-04 2011-02-16 华映视讯（吴江）有限公司 Liquid crystal drive device and method for improving starting-up delay, and time sequence control circuit
CN101976555A (en) * 2010-11-09 2011-02-16 华映视讯（吴江）有限公司 Liquid crystal display device and driving method thereof
CN101976555B (en) * 2010-11-09 2013-02-06 华映视讯（吴江）有限公司 Liquid crystal display device and driving method thereof
CN101996562A (en) * 2010-11-15 2011-03-30 华映视讯（吴江）有限公司 Display device and driving method
CN101996562B (en) * 2010-11-15 2013-04-24 华映视讯（吴江）有限公司 Display device
CN102122466A (en) * 2010-12-30 2011-07-13 友达光电股份有限公司 Liquid crystal display device and driving method thereof
CN102034453B (en) * 2010-12-30 2013-02-13 福建华映显示科技有限公司 Operating voltage switching system of liquid crystal panel and switching method thereof
CN102122466B (en) * 2010-12-30 2012-11-07 友达光电股份有限公司 Liquid crystal display device and driving method thereof
CN102034453A (en) * 2010-12-30 2011-04-27 福建华映显示科技有限公司 Operating voltage switching system of liquid crystal panel and switching method thereof
CN104240671A (en) * 2014-07-07 2014-12-24 友达光电股份有限公司 Pixel circuit, control method thereof and display device with pixel circuit
CN108447451A (en) * 2018-01-15 2018-08-24 友达光电股份有限公司 Display device
CN108447451B (en) * 2018-01-15 2023-08-01 友达光电股份有限公司 Display device
CN109346026A (en) * 2018-12-21 2019-02-15 深圳市华星光电技术有限公司 The driving device and liquid crystal display of liquid crystal display panel
CN111341243A (en) * 2020-04-10 2020-06-26 Tcl华星光电技术有限公司 Display device
CN111341243B (en) * 2020-04-10 2021-08-24 Tcl华星光电技术有限公司 Display device
US11710434B2 (en) 2020-04-10 2023-07-25 Tcl China Star Optoelectronics Technology Co., Ltd. Display device and electronic equipment
CN112967695A (en) * 2021-03-19 2021-06-15 武汉京东方光电科技有限公司 Driving device and driving method of liquid crystal display module and liquid crystal display device

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Application publication date: 20100512