CN105304049A - Liquid crystal display device and crosstalk defect control method of same - Google Patents
Liquid crystal display device and crosstalk defect control method of same Download PDFInfo
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- CN105304049A CN105304049A CN201510810922.3A CN201510810922A CN105304049A CN 105304049 A CN105304049 A CN 105304049A CN 201510810922 A CN201510810922 A CN 201510810922A CN 105304049 A CN105304049 A CN 105304049A
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Abstract
The invention provides a liquid crystal display device which comprises a time schedule controller, a source electrode driver, a TFT array baseplate and a detection circuit, wherein the time schedule controller is electrically connected to the source electrode driver, the source electrode driver is electrically connected to the TFT array baseplate, the detection circuit is electrically connected to the TFT array baseplate and the time schedule controller, and the detection circuit is used to acquire a detected voltage from the TFT array baseplate, acquire a clock signal and a display state signal from the time schedule controller and further output a control signal to the time schedule controller according to changes of the detected voltage, the clock signal and the display state signal, so that the time schedule controller can control the source electrode driver to change a polarity inversion driving manner. In addition, the invention also provides a crosstalk defect control method of the liquid crystal display device. The liquid crystal display device can effectively control generation of a crosstalk defect and makes for improving display quality.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly relate to a kind of liquid crystal indicator and crosstalk defect control method thereof.
Background technology
At Thin Film Transistor-LCD (ThinFilmTransistor-LiquidCrystalDisplay, TFT-LCD) in, because of the reason on procedure for producing, make some stray capacitances of the inner inevitably existence of the liquid crystal display (Cell) of TFT-LCD panel.As shown in Figure 1, C1, C2 are the stray capacitance formed between color filter layers and tft array layer, when the data voltage on TFT-LCD panel full line data line changes (positive-negative polarity is uneven), partial data voltage can be coupled in public electrode voltages (Vcom) through stray capacitance C1, C2, cause TFT-LCD panel to occur the defects such as horizontal crosstalk (crosstalk), colour cast, have a strong impact on the display quality of TFT-LCD panel.
At present, horizontal crosstalk defects controlling for TFT-LCD panel adopts following two kinds of modes usually: a kind of for controlling by compensating Vcom, as shown in Figure 2, by gathering the coupling Vcom (waveform is as shown in V1 in Fig. 2) produced by stray capacitance coupling, and utilize sign-changing amplifier U1 to generate the Contrary compensation voltage (waveform as shown in Fig. 2 V2) contrary with coupling Vcom, and then the voltage difference of this Contrary compensation voltage to liquid crystal display two ends is adopted to compensate to alleviate crosstalk.Another kind of for being controlled by Gamma compensation, the coupling Vcom being about to collect is added on Gamma voltage, makes the output of driving circuit and Vcom do in-phase oscillation, thus makes the pressure reduction at liquid crystal display two ends be consistent to alleviate crosstalk.But, aforesaid way exists following not enough: because procedure for producing exists deviation, the optimum voltage offset of the liquid crystal display of different TFT-LCD panel is had nothing in common with each other, if adopt unified bucking voltage to compensate a collection of TFT-LCD panel, part TFT-LCD panel can be caused still to there is more serious crosstalk defect; In addition, all need in said method to arrange compensating circuit, cause production cost to increase.
Summary of the invention
In view of the above-mentioned problems in the prior art, the invention provides a kind of liquid crystal indicator, by detecting whether the deviation amplitude of common electric voltage, deviation duration and current display frame are that static judging whether can cause crosstalk defect, and the reversal of poles type of drive that source electrode driver changes liquid crystal indicator is controlled when judgement can cause crosstalk defect, to control crosstalk defect, promote the display quality of liquid crystal indicator.
Separately, the present invention also provides a kind of crosstalk defect control method of liquid crystal indicator.
A kind of liquid crystal indicator, comprise time schedule controller, source electrode driver, tft array substrate and circuit for detecting, described time schedule controller and described source electrode driver are electrically connected, described source electrode driver and described tft array substrate are electrically connected, described circuit for detecting and described tft array substrate and described time schedule controller are electrically connected, described circuit for detecting is used for from described tft array substrate, obtain detecting voltage, and from described time schedule controller, obtain clock signal and display status signal, and then according to described detecting voltage, the change of clock signal and display status signal outputs control signals to described time schedule controller, reversal of poles type of drive is changed to be controlled described source electrode driver by described time schedule controller.
Wherein, described liquid crystal indicator also comprises sample circuit, described sample circuit comprises a series circuit, described tft array substrate comprises public electrode, described RC series circuit one end is connected with described public electrode, the other end is connected with described circuit for detecting, for obtaining described detecting voltage from described public electrode, and described detecting voltage is exported to described circuit for detecting.
Wherein, described circuit for detecting comprises the first comparer, and described first comparer comprises first input end, the second output terminal and the first output terminal, and described first input end is connected with described sample circuit, to obtain described detecting voltage from described sample circuit; Described second input end is for inputting the first reference voltage; Described first comparer is used for more described detecting voltage and described first reference voltage, when described detecting voltage is less than described first reference voltage, described first output terminal output low level signal, when described detecting voltage is greater than described first reference voltage, described first output terminal exports high level signal.
Wherein, described circuit for detecting also comprises current source, transistor, the first electric capacity and the first resistance, described transistor comprises base stage, collector and emitter, described base stage is connected with described first output terminal, described collector is connected with described current source, described emitter is by described first capacity earth, and described first resistance is connected with described first Capacitance parallel connection; When described first output terminal exports high level signal, described transistor turns, described current source is described first capacitor charging by described transistor.
Wherein, described circuit for detecting also comprises the second comparer, and described second comparer comprises the 3rd input end, four-input terminal and the second output terminal, and described 3rd input end is connected with described emitter, and described four-input terminal is for inputting the second reference voltage; Described second comparer is used for the voltage of more described first electric capacity and described second reference voltage; When the voltage of described first electric capacity is less than described second reference voltage, described second output terminal output low level signal, when the voltage of described first electric capacity is greater than described second reference voltage, described second output terminal exports high level signal.
Wherein, described circuit for detecting also comprises trigger, described trigger comprises the first trigger end, the second trigger end, input end of clock, trigger output end and reversed-phase output, described first trigger end is connected with described second output terminal, described second trigger end is connected with described time schedule controller, to obtain display status signal from described time schedule controller, described input end of clock is connected with described time schedule controller, to obtain clock signal from described time schedule controller, described trigger output end is connected with described time schedule controller, and described reversed-phase output is unsettled.
A crosstalk defect control method for liquid crystal indicator, comprising:
Detecting voltage is obtained from the public electrode of liquid crystal indicator;
Described detecting voltage is compared with the first reference voltage;
When described detecting voltage is greater than described first reference voltage, judge whether the duration that described detecting voltage is greater than described first reference voltage is greater than Preset Time;
When the described duration is greater than described Preset Time, obtain the current display frame state of described liquid crystal indicator, wherein said picture state comprises tableaux and dynamic menu;
When described picture state is tableaux, the source electrode driver controlling described liquid crystal indicator changes reversal of poles type of drive.
Wherein, described described detecting voltage to be compared with the first reference voltage, comprising:
Described detecting voltage is inputted the first comparer, and described first reference voltage is inputted the first comparer;
When described detecting voltage is greater than described first reference voltage, described first comparer exports high level signal;
When described detecting voltage is less than described first reference voltage, described first comparer output low level signal.
Wherein, described when described detecting voltage is greater than described first reference voltage, judge whether the duration that described detecting voltage is greater than described first reference voltage is greater than Preset Time, comprising:
When described first comparer exports high level signal, be the first capacitor charging by current source;
Obtain the voltage on described first electric capacity, and the voltage on described first electric capacity and the second reference voltage are inputted the second comparer compare, the voltage that wherein said second reference voltage equals to charge on the first electric capacity described in when reaching Preset Time;
When the voltage on described first electric capacity is greater than described second reference voltage, described second comparer exports high level signal.
Wherein, described when described picture state is tableaux, the source electrode driver controlling described liquid crystal indicator changes reversal of poles type of drive, comprising:
Control described source electrode driver and change into the square inversion driving mode of two row by two line inversion driving modes; Or,
Control described source electrode driver and change into a little square inversion driving mode by an inversion driving mode.
Described liquid crystal indicator obtains detecting voltage by described circuit for detecting from described tft array substrate, and from described time schedule controller, obtain clock signal and display status signal, and then according to described detecting voltage, the change of clock signal and display status signal outputs control signals to described time schedule controller, reversal of poles type of drive is changed to be controlled described source electrode driver by described time schedule controller, effectively can prevent described liquid crystal indicator under static state display picture because parasitic capacitor voltage is coupled on public electrode, the voltage on public electrode is made to produce deviation and cause described liquid crystal indicator to occur crosstalk, the defects such as colour cast, be conducive to the display quality promoting described liquid crystal indicator.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the equivalent electrical circuit of the liquid crystal display of TFT-LCD panel;
Fig. 2 is the structural representation of crosstalk powder injection molding circuit in prior art;
The structural representation of the liquid crystal indicator that Fig. 3 provides for the embodiment of the present invention;
Fig. 4 is the structural representation of the sample circuit of liquid crystal indicator shown in Fig. 3;
Fig. 5 is the structural representation of the circuit for detecting of liquid crystal indicator shown in Fig. 3;
The reversal of poles schematic diagram that Fig. 6 is liquid crystal indicator shown in Fig. 3;
The schematic flow sheet of the crosstalk defect control method of the liquid crystal indicator that Fig. 7 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
For ease of describing, can use such as here " ... under ", " ... below ", D score, " ... on ", " on " etc. space relative terms the relation of an element or feature and another (a bit) element or feature is as illustrated in the drawing described.Be appreciated that, when an element or layer be called as another element or layer " on ", " being connected to " or " being couple to " another element or layer time, it can directly on another element or layer, be directly connected to or be couple to another element or layer, or intervening elements or layer can be there is.On the contrary, when an element be called as on " directly existing " another element or layer, " being directly connected to " or " being directly coupled to " another element or layer time, there is not intervening elements or layer.
Being appreciated that terminology used here is only to describe specific embodiment, not really wanting to limit the present invention.When here using, clearly state unless context separately has, otherwise singulative " " and " being somebody's turn to do " are also intended to comprise plural form.Further, when using in this manual, term " comprises " and/or shows " comprising " existence of described feature, entirety, step, operation, element and/or assembly, but does not get rid of other features one or more, entirety, step, operation, element, the existence of assembly and/or its combination or increase.
Unless otherwise defined, all terms used herein (comprising technical term and scientific terminology) all have the identical meanings that the those of ordinary skill in field belonging to the present invention is understood usually.Will be further understood that, the term defined in such as universaling dictionary, otherwise should be interpreted as having the implication that implication with them in the linguistic context of association area is consistent, and should not be interpreted as idealized or excessive formal meaning, unless so defined clearly at this.
Refer to Fig. 3, the embodiment of the present invention provides a kind of liquid crystal indicator 100, comprises time schedule controller 110, source electrode driver 130, tft array substrate 150 and circuit for detecting 170.Described time schedule controller 110 is electrically connected with described source electrode driver 130, described source electrode driver 130 is electrically connected with described tft array substrate 150, described circuit for detecting 170 is electrically connected with described tft array substrate 150 and described time schedule controller 110, described circuit for detecting 170 for obtaining detecting voltage from described tft array substrate 150, and from described time schedule controller 110, obtain clock signal (CLK) and display status signal, and then according to described detecting voltage, the change of clock signal and display status signal exports control signal (Output) to described time schedule controller 110, reversal of poles type of drive is changed to control described source electrode driver 130 by described time schedule controller 110.Wherein, described clock signal is the line period signal (CKV) that time schedule controller 110 exports; Whether the current display frame that described display status signal is used to indicate described liquid crystal indicator 100 is static, when described display status signal is 1, represent current and be shown as dynamic menu, when described display status signal is 0, represents current and be shown as tableaux.
Described liquid crystal indicator 100 also comprises width modulation (Pulse-WidthModulation, PWM) chip 180 and control circuit board 190, described time schedule controller 110 and described PWM chip 180 are all arranged on described control circuit board 190, and described circuit for detecting 170 can be integrated in described PWM chip 180 or be separately set on described control circuit board 190.
Refer to Fig. 4, described liquid crystal indicator 100 also comprises sample circuit 160, described sample circuit 160 comprises a RC series circuit 161, described tft array substrate 150 comprises public electrode 151, described RC series circuit 161 one end is connected with described public electrode 151, the other end is connected with described circuit for detecting 170, for obtaining described detecting voltage from described public electrode 151, and described detecting voltage is exported to described circuit for detecting 170.
Refer to Fig. 5, described circuit for detecting 170 comprises the first comparer U1, the second comparer U2, trigger D1, current source S1, transistor Q1, the first electric capacity C1 and the first resistance R1.Described first comparer U1 comprises first input end 1, second output terminal 2, first output terminal 3 and power end VAA, described power end VAA is used for providing working power for described first comparer U1, described first input end 1 is connected with described sample circuit 160, to obtain described detecting voltage from described sample circuit 160; Described second input end 2 is for inputting the first reference voltage Vref 1; Described first comparer U1 is used for more described detecting voltage and described first reference voltage, when described detecting voltage is less than described first reference voltage, described first output terminal 3 output low level signal, when described detecting voltage is greater than described first reference voltage, described first output terminal 3 exports high level signal.
Described transistor Q1 comprises base stage b, collector c and emitter e, described base stage b is connected with described first output terminal 3, described collector c is connected with described current source S1, and described emitter e is by described first electric capacity C1 ground connection, and described first resistance R1 and described first electric capacity C1 is connected in parallel.When described first output terminal 3 exports high level signal, described transistor Q1 conducting, described current source S1 is that described first electric capacity C1 charges by described transistor Q, and to make the voltage on described first electric capacity C1 rise gradually, namely the voltage of described emitter e rises gradually.
Described second comparer U2 comprises the 3rd input end 4, four-input terminal 5, second output terminal 6 and power end VDD, described power end VDD is used for providing working power for described second comparer U2, described 3rd input end 4 is connected with described emitter e, and described four-input terminal 5 is for inputting the second reference voltage Vref 2; Described second comparer U2 is used for the voltage of more described first electric capacity C1 and described second reference voltage.When the voltage of described first electric capacity C1 is less than described second reference voltage, described second output terminal 6 output low level signal, when the voltage of described first electric capacity C1 is greater than described second reference voltage, described second output terminal 6 exports high level signal.In the present embodiment, after described current source S1 is the described first electric capacity C1 duration of charging exceed Preset Time, the voltage of described first electric capacity C1 is greater than described second reference voltage, and described second output terminal 6 exports high level signal.Described second reference voltage is 1.2V, and correspondingly, the voltage that described Preset Time is described first electric capacity C1 charges to the time required for 1.2V from 0V.
Described trigger D1 comprises the first trigger end J, the second trigger end K, input end of clock CLK, trigger output end Q and reversed-phase output
described first trigger end J is connected with described second output terminal 6, described second trigger end K is connected with described time schedule controller 110, to obtain display status signal from described time schedule controller 110, described input end of clock CLK is connected with described time schedule controller 110, to obtain clock signal (at once periodic signal CKV) from described time schedule controller 110, described trigger output end Q is connected with described time schedule controller 110, described reversed-phase output
unsettled.In the present embodiment, described trigger D1 is JK flip-flop, and its truth table is as shown in the table:
The truth table of table 1 trigger D1
As can be seen from Table 1, when described second output terminal 6 exports high level signal, and when described display status signal is 0 (namely described liquid crystal indicator 100 is current is shown as tableaux), described trigger output end Q exports the control signal of high level.Described time schedule controller 110 controls described source electrode driver 130 according to the control signal of this high level and changes reversal of poles type of drive, thus prevents described liquid crystal indicator 100 under tableaux, occurring crosstalk defect.Being appreciated that described trigger D1 is not limited to JK flip-flop, can also be rest-set flip-flop.
Particularly, when the second output terminal 6 exports high level signal, and described display status signal is when being 0, represent that described liquid crystal indicator 100 is current and be shown as tableaux, simultaneously, the time being greater than described first reference voltage from the detecting voltage of described public electrode 151 acquisition has exceeded described Preset Time, namely cause partial data voltage to be coupled on public electrode 151 through stray capacitance due to the data voltage change (positive-negative polarity is uneven) on data line, thus make the voltage on public electrode occur deviation.Now, if described liquid crystal indicator 100 continues to keep original reversal of poles mode, then the voltage deviation on described public electrode can cause occurring crosstalk defect in display frame, such as horizontal crosstalk defect.In the embodiment of the present invention by described circuit for detecting 170 when the time detecting the detecting voltage obtained from described public electrode 151 and be greater than described first reference voltage exceedes described Preset Time, export the control signal of high level, and then control described source electrode driver 130 by described time schedule controller 110 according to the control signal of this high level and change reversal of poles type of drive, effectively can prevent described liquid crystal indicator 100 under static state display picture, occurring crosstalk defect, promote display quality.
Refer to Fig. 6, Figure 6 shows that normally used four kinds of reversal of poles type of drive in TFT-LCD.In the present embodiment, under supposing that described liquid crystal indicator 100 is current and being in two line inversion driving modes, when the time that described detecting voltage is greater than described first reference voltage exceedes described Preset Time, described circuit for detecting 170 exports the control signal of high level, and then control described source electrode driver 130 by described time schedule controller 110 and change reversal of poles type of drive, such as, the square inversion driving mode of two row is changed into by two current line inversion driving modes, due to the change of inversion driving mode, the positive and negative unbalanced state of data voltage improves, thus make voltage resume on described public electrode 151 to normal value, therefore the crosstalk defect under static state display picture can effectively be suppressed.Similarly, if described liquid crystal indicator 100 is current be in an inversion driving mode under, then when the time that described detecting voltage is greater than described first reference voltage exceedes described Preset Time, described source electrode driver 130 can be controlled by described time schedule controller 110 and change into a little square inversion driving mode by current some inversion driving mode.
Refer to Fig. 7, the embodiment of the present invention also provides a kind of crosstalk defect control method of liquid crystal indicator, and described method at least comprises the steps:
Step S201: obtain detecting voltage from the public electrode of liquid crystal indicator;
Step S202: described detecting voltage is compared with the first reference voltage;
Step S203: when described detecting voltage is greater than described first reference voltage, judges whether the duration that described detecting voltage is greater than described first reference voltage is greater than Preset Time;
Step S204: when the described duration is greater than described Preset Time, obtain the current display frame state of described liquid crystal indicator, wherein said picture state comprises tableaux and dynamic menu;
Step S205: when described picture state is tableaux, the source electrode driver controlling described liquid crystal indicator changes reversal of poles type of drive.
Wherein, described described detecting voltage to be compared with the first reference voltage, comprising:
Described detecting voltage is inputted the first comparer, and described first reference voltage is inputted the first comparer;
When described detecting voltage is greater than described first reference voltage, described first comparer exports high level signal;
When described detecting voltage is less than described first reference voltage, described first comparer output low level signal.
Wherein, described when described detecting voltage is greater than described first reference voltage, judge whether the duration that described detecting voltage is greater than described first reference voltage is greater than Preset Time, comprising:
When described first comparer exports high level signal, be the first capacitor charging by current source;
Obtain the voltage on described first electric capacity, and this voltage and the second reference voltage are inputted the second comparer compare, the voltage that wherein said second reference voltage equals to charge on the first electric capacity described in when reaching Preset Time;
When the voltage on described first electric capacity is greater than described second reference voltage, described second comparer exports high level signal.
Wherein, described when the described duration is greater than described Preset Time, obtain the current display frame state of described liquid crystal indicator, comprising:
The display status signal of described liquid crystal indicator is obtained from time schedule controller;
When described display status signal is 1, represents current and be shown as dynamic menu;
When described display status signal is 0, represents current and be shown as tableaux.
Wherein, described when described picture state is tableaux, the source electrode driver controlling described liquid crystal indicator changes reversal of poles type of drive, comprising:
Control described source electrode driver and change into the square inversion driving mode of two row by two line inversion driving modes; Or,
Control described source electrode driver and change into a little square inversion driving mode by an inversion driving mode.
Be appreciated that the concrete execution of each step in the crosstalk defect control method of described liquid crystal indicator with reference to the associated description in liquid crystal indicator embodiment shown in Fig. 3-Fig. 6, can also repeat no more herein.
Described liquid crystal indicator obtains detecting voltage by described circuit for detecting from described tft array substrate, and this detecting voltage and the first reference voltage are compared, Preset Time is exceeded when this detecting voltage keeps is greater than this reference voltage, and described liquid crystal indicator is current when being shown as tableaux, described circuit for detecting outputs control signals to described time schedule controller, and then control described source electrode driver by described time schedule controller and change acute inversion driving mode, effectively can prevent described liquid crystal indicator under static state display picture because parasitic capacitor voltage is coupled on public electrode, the voltage on public electrode is made to produce deviation and cause crosstalk, the defects such as colour cast, be conducive to the display quality promoting described liquid crystal indicator.
Above disclosedly be only preferred embodiment of the present invention, certainly the interest field of the present invention can not be limited with this, one of ordinary skill in the art will appreciate that all or part of flow process realizing above-described embodiment, and according to the equivalent variations that the claims in the present invention are done, still belong to the scope that invention is contained.
Claims (10)
1. a liquid crystal indicator, comprise time schedule controller, source electrode driver and tft array substrate, it is characterized in that, described liquid crystal indicator also comprises circuit for detecting, described time schedule controller and described source electrode driver are electrically connected, described source electrode driver and described tft array substrate are electrically connected, described circuit for detecting and described tft array substrate and described time schedule controller are electrically connected, described circuit for detecting is used for from described tft array substrate, obtain detecting voltage, and from described time schedule controller, obtain clock signal and display status signal, and then according to described detecting voltage, the change of clock signal and display status signal outputs control signals to described time schedule controller, reversal of poles type of drive is changed to be controlled described source electrode driver by described time schedule controller.
2. liquid crystal indicator as claimed in claim 1, it is characterized in that, described liquid crystal indicator also comprises sample circuit, described sample circuit comprises a series circuit, described tft array substrate comprises public electrode, and described RC series circuit one end is connected with described public electrode, and the other end is connected with described circuit for detecting, for obtaining described detecting voltage from described public electrode, and described detecting voltage is exported to described circuit for detecting.
3. liquid crystal indicator as claimed in claim 2, it is characterized in that, described circuit for detecting comprises the first comparer, described first comparer comprises first input end, the second output terminal and the first output terminal, described first input end is connected with described sample circuit, to obtain described detecting voltage from described sample circuit; Described second input end is for inputting the first reference voltage; Described first comparer is used for more described detecting voltage and described first reference voltage, when described detecting voltage is less than described first reference voltage, described first output terminal output low level signal, when described detecting voltage is greater than described first reference voltage, described first output terminal exports high level signal.
4. liquid crystal indicator as claimed in claim 3, it is characterized in that, described circuit for detecting also comprises current source, transistor, the first electric capacity and the first resistance, described transistor comprises base stage, collector and emitter, described base stage is connected with described first output terminal, described collector is connected with described current source, and described emitter is by described first capacity earth, and described first resistance is connected with described first Capacitance parallel connection; When described first output terminal exports high level signal, described transistor turns, described current source is described first capacitor charging by described transistor.
5. liquid crystal indicator as claimed in claim 4, it is characterized in that, described circuit for detecting also comprises the second comparer, described second comparer comprises the 3rd input end, four-input terminal and the second output terminal, described 3rd input end is connected with described emitter, and described four-input terminal is for inputting the second reference voltage; Described second comparer is used for the voltage of more described first electric capacity and described second reference voltage; When the voltage of described first electric capacity is less than described second reference voltage, described second output terminal output low level signal, when the voltage of described first electric capacity is greater than described second reference voltage, described second output terminal exports high level signal.
6. liquid crystal indicator as claimed in claim 5, it is characterized in that, described circuit for detecting also comprises trigger, described trigger comprises the first trigger end, second trigger end, input end of clock, trigger output end and reversed-phase output, described first trigger end is connected with described second output terminal, described second trigger end is connected with described time schedule controller, to obtain display status signal from described time schedule controller, described input end of clock is connected with described time schedule controller, to obtain clock signal from described time schedule controller, described trigger output end is connected with described time schedule controller, described reversed-phase output is unsettled.
7. a crosstalk defect control method for liquid crystal indicator, is characterized in that, described method comprises:
Detecting voltage is obtained from the public electrode of liquid crystal indicator;
Described detecting voltage is compared with the first reference voltage;
When described detecting voltage is greater than described first reference voltage, judge whether the duration that described detecting voltage is greater than described first reference voltage is greater than Preset Time;
When the described duration is greater than described Preset Time, obtain the current display frame state of described liquid crystal indicator, wherein said picture state comprises tableaux and dynamic menu;
When described picture state is tableaux, the source electrode driver controlling described liquid crystal indicator changes reversal of poles type of drive.
8. method as claimed in claim 7, is characterized in that, is describedly compared with the first reference voltage by described detecting voltage, comprising:
Described detecting voltage is inputted the first comparer, and described first reference voltage is inputted the first comparer;
When described detecting voltage is greater than described first reference voltage, described first comparer exports high level signal;
When described detecting voltage is less than described first reference voltage, described first comparer output low level signal.
9. method as claimed in claim 8, is characterized in that, described when described detecting voltage is greater than described first reference voltage, judges whether the duration that described detecting voltage is greater than described first reference voltage is greater than Preset Time, comprising:
When described first comparer exports high level signal, be the first capacitor charging by current source;
Obtain the voltage on described first electric capacity, and the voltage on described first electric capacity and the second reference voltage are inputted the second comparer compare, the voltage that wherein said second reference voltage equals to charge on the first electric capacity described in when reaching Preset Time;
When the voltage on described first electric capacity is greater than described second reference voltage, described second comparer exports high level signal.
10. method as claimed in claim 7, is characterized in that, described when described picture state is tableaux, and the source electrode driver controlling described liquid crystal indicator changes reversal of poles type of drive, comprising:
Control described source electrode driver and change into the square inversion driving mode of two row by two line inversion driving modes; Or,
Control described source electrode driver and change into a little square inversion driving mode by an inversion driving mode.
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| CN109887471A (en) * | 2019-04-08 | 2019-06-14 | 惠科股份有限公司 | The driving method of driving circuit structure, liquid crystal display panel and driving circuit structure |
| CN110060628A (en) * | 2019-04-17 | 2019-07-26 | 上海天马微电子有限公司 | A kind of display driving method, device, driving chip and display device |
| WO2019205442A1 (en) * | 2018-04-25 | 2019-10-31 | 深圳市华星光电技术有限公司 | Circuit for compensating for gamma voltage to improve crosstalk caused by coupling, and display apparatus |
| CN112397035A (en) * | 2019-08-12 | 2021-02-23 | 京东方科技集团股份有限公司 | Source driver, driving system, liquid crystal display device and correction method thereof |
| WO2021103158A1 (en) * | 2019-11-25 | 2021-06-03 | Tcl华星光电技术有限公司 | Method for improving horizontal crosstalk of display panel |
| CN114077470A (en) * | 2020-08-21 | 2022-02-22 | 广州视源电子科技股份有限公司 | Liquid crystal display screen control method, device, equipment and storage medium |
| CN115762381A (en) * | 2022-11-14 | 2023-03-07 | 惠科股份有限公司 | Display device driving method and display device |
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