CN104778934A - Liquid crystal display panel, driving method and driving circuit thereof and display device - Google Patents
Liquid crystal display panel, driving method and driving circuit thereof and display device Download PDFInfo
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- CN104778934A CN104778934A CN201510191734.7A CN201510191734A CN104778934A CN 104778934 A CN104778934 A CN 104778934A CN 201510191734 A CN201510191734 A CN 201510191734A CN 104778934 A CN104778934 A CN 104778934A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 7
- 239000000758 substrate Substances 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 239000007788 liquid Substances 0.000 abstract 2
- 230000002159 abnormal effect Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 12
- 230000001276 controlling effect Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000002800 charge carrier Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The invention discloses a liquid crystal display panel, a driving method and a driving circuit thereof and a display device. The driving method comprises the following steps: a temperature detector detects the temperature of an environment in which the liquid crystal display panel is located, and transmits the temperature to a clock controller; the clock controller controls a power supply management circuit to output a grid signal opening voltage and a grid signal closing voltage to a grid driving circuit and controls a public electrode driving circuit to output a public electrode voltage according to the received temperature and the pre-stored correspondence of the temperature and the grid signal opening voltage, the grid signal closing voltage and the public electrode voltage; thus, the grid signal opening voltage, the grid signal closing voltage and the public electrode voltage can be adjusted to optimum values in real time according to the temperature of the environment in which the liquid display panel is located, so as to avoid the problem of abnormal displayed pictures of the liquid display panel in different temperature environments.
Description
Technical field
The present invention relates to display technique field, particularly relate to a kind of display panels, its driving method, its driving circuit and display device.
Background technology
Display panels, owing to having low in energy consumption, the advantage such as driving voltage is low, be easy to driving, available large scale integrated circuit Direct driver, structure is simple, cost is low, the life-span is long, has become the current nova in display field and the bright spot of economic development.
When display panels is in low temperature environment, in the active layer of thin film transistor (TFT) (Thin Film Transistor, TFT), the mobility of charge carrier can reduce, and needs to increase signal cut-in voltage V
ghto improve the driving force to TFT, but, signal cut-in voltage V
ghincrease can make the electric capacity C between grid line and source electrode
gsincrease, by
wherein, Δ V
pfor in signal by the moment being opened to closedown, the voltage difference before and after the voltage generation saltus step of pixel electrode, V
ghfor signal cut-in voltage, V
glfor signal closes voltage, C
gsfor the electric capacity between grid line and source electrode, C
lcfor the electric capacity between pixel electrode and liquid crystal molecule, C
sfor the memory capacitance between pixel electrode and public electrode, can derive, signal cut-in voltage V
ghand the electric capacity C between grid line and source electrode
gsincrease can make the voltage difference delta V before and after the voltage generation saltus step of pixel electrode
pbecome large, and public electrode voltages V
comremain unchanged, display panels can be caused to occur serious flicker problem.When display panels is in hot environment, the threshold voltage V of TFT
thto low-voltage drift, can may occur that signal closes voltage V
glbe greater than threshold voltage V
thsituation, thus the leakage current of TFT can be caused to increase, affect the display quality of display panels.
Therefore, how avoiding display panels in different temperatures environment, occur the problem of display frame exception, is the technical matters that those skilled in the art need solution badly.
Summary of the invention
In view of this, embodiments provide a kind of display panels, its driving method, its driving circuit and display device, in order to the problem avoiding display panels to occur display frame exception in different temperatures environment.
Therefore, embodiments provide a kind of driving method of display panels, comprising:
The temperature of environment residing for the display panels detected is sent to clock controller by temperature detector;
Clock controller closes the corresponding relation of voltage, public electrode voltages according to the described temperature received and the temperature prestored and signal cut-in voltage, signal, control electric power management circuit and export signal cut-in voltage and signal closedown voltage to gate driver circuit, control common electrode driving circuit and export public electrode voltages.
In a kind of possible implementation, in the said method that the embodiment of the present invention provides, the temperature of environment residing for the display panels detected is sent to clock controller by described temperature detector, specifically comprises:
The temperature of environment residing for the display panels detected is sent to clock controller in the mode of Serial Peripheral Interface (SPI) or twin wire universal serial bus by temperature detector.
In a kind of possible implementation, in the said method that the embodiment of the present invention provides, described clock controller controls electric power management circuit and exports signal cut-in voltage and signal closedown voltage to gate driver circuit, specifically comprises:
The mode of clock controller universal serial bus with the 2-wire controls electric power management circuit and exports signal cut-in voltage to gate driver circuit and signal closes voltage.
In a kind of possible implementation, in the said method that the embodiment of the present invention provides, described clock controller controls common electrode driving circuit and exports public electrode voltages, specifically comprises:
Clock controller controls common electrode driving circuit output public electrode voltages in the mode of Serial Peripheral Interface (SPI) or twin wire universal serial bus.
The embodiment of the present invention additionally provides a kind of driving circuit of display panels, comprising:
Temperature detector, the temperature for environment residing for the display panels detected sends to clock controller;
Clock controller, for closing the corresponding relation of voltage, public electrode voltages according to the described temperature that receives and the temperature prestored and signal cut-in voltage, signal, control electric power management circuit and export signal cut-in voltage and signal closedown voltage to gate driver circuit, control common electrode driving circuit and export public electrode voltages.
In a kind of possible implementation, in the above-mentioned driving circuit that the embodiment of the present invention provides, described temperature detector, the temperature specifically for environment residing for the display panels detected sends to clock controller in the mode of Serial Peripheral Interface (SPI) or twin wire universal serial bus.
In a kind of possible implementation, in the above-mentioned driving circuit that the embodiment of the present invention provides, described clock controller, the mode specifically for universal serial bus with the 2-wire controls electric power management circuit.
In a kind of possible implementation, in the above-mentioned driving circuit that the embodiment of the present invention provides, described clock controller, specifically for controlling common electrode driving circuit in the mode of Serial Peripheral Interface (SPI) or twin wire universal serial bus.
The embodiment of the present invention additionally provides a kind of display panels, comprises above-mentioned driving circuit that the embodiment of the present invention provides, the relatively array base palte put and subtend substrate and the liquid crystal layer between described array base palte and described subtend substrate; Wherein, described driving circuit is used for exporting signal cut-in voltage and signal cut out voltage to the gate driver circuit be arranged in described array base palte or described subtend substrate, and exports public electrode voltages to the public electrode circuit be arranged in described array base palte or described subtend substrate.
The embodiment of the present invention additionally provides a kind of display device, comprises the above-mentioned display panels that the embodiment of the present invention provides.
The above-mentioned display panels that the embodiment of the present invention provides, its driving method, its driving circuit and display device, this driving method comprises: the temperature of environment residing for the display panels detected is sent to clock controller by temperature detector; Clock controller closes the corresponding relation of voltage, public electrode voltages according to the temperature received and the temperature prestored and signal cut-in voltage, signal, control electric power management circuit and export signal cut-in voltage and signal closedown voltage to gate driver circuit, control common electrode driving circuit and export public electrode voltages; Like this, signal cut-in voltage, signal closedown voltage and public electrode voltages can be adjusted in real time to optimum value according to the temperature of environment residing for display panels, thus can avoid display panels in different temperatures environment, occur the problem of display frame exception.
Accompanying drawing explanation
The process flow diagram of the driving method of the display panels that Fig. 1 provides for the embodiment of the present invention;
The structural representation of the driving circuit of the display panels that Fig. 2 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of display panels, its driving method, its driving circuit and display device that the embodiment of the present invention provides is described in detail.
The driving method of a kind of display panels that the embodiment of the present invention provides, as shown in Figure 1, comprises the steps:
The temperature of environment residing for the display panels detected is sent to clock controller by S101, temperature detector;
Particularly, thermistor detected temperatures can be utilized, or also can utilize can other devices of detected temperatures in real time, do not limit at this;
S102, clock controller close the corresponding relation of voltage, public electrode voltages according to the temperature received and the temperature prestored and signal cut-in voltage, signal, control electric power management circuit and export signal cut-in voltage and signal closedown voltage to gate driver circuit, control common electrode driving circuit and export public electrode voltages.
Particularly, in clock controller, be previously stored with the optimum setting value of signal cut-in voltage corresponding to different temperatures, the best setting of signal closedown voltage and the optimum setting value of public electrode voltages.Wherein, clock controller is specifically as follows counter control register (Timer Control Register, TCON), or, clock control implement body also can be micro-control unit (Micro Control Unit, MCU), does not limit at this.
The above-mentioned driving method that the embodiment of the present invention provides, the temperature sent according to temperature detector due to clock controller and the temperature prestored and signal cut-in voltage, signal close the corresponding relation of voltage, public electrode voltages, control electric power management circuit and export signal cut-in voltage and signal closedown voltage to gate driver circuit, control common electrode driving circuit and export public electrode voltages; Like this, signal cut-in voltage, signal closedown voltage and public electrode voltages can be adjusted in real time to optimum value according to the temperature of environment residing for display panels, thus due to the threshold voltage V of TFT when can avoid display panels in hot environment
thto low-voltage drift, the leakage current of TFT increased and affect display quality, due to signal cut-in voltage V simultaneously when can also avoid display panels in low temperature environment
ghincrease the voltage difference delta V before and after the voltage generation saltus step making pixel electrode
pbecome large and occur serious flicker problem.
In the specific implementation, the temperature of environment residing for the display panels detected is sent to clock controller by the step S101 temperature detector in the said method that the embodiment of the present invention provides, specifically can realize in the following manner: the temperature of environment residing for the display panels detected is sent to clock controller in the mode of Serial Peripheral Interface (SPI) (Serial Peripheral Interface, SPI) by temperature detector; Or the mode of the temperature of environment residing for the display panels detected universal serial bus (Inter-Integrated Circuit, I2C) is with the 2-wire sent to clock controller by temperature detector, does not limit at this.
Certainly, in the specific implementation, temperature detector sends to clock controller the mode that the transmission mode of instruction is not limited to SPI or I2C, can also be other similar transmission modes, not limit at this.
In the specific implementation, step S102 clock controller in the said method that the embodiment of the present invention provides controls electric power management circuit and exports signal cut-in voltage and signal closedown voltage to gate driver circuit, specifically can realize in the following manner: clock controller controls electric power management circuit in the mode of I2C and exports signal cut-in voltage and signal closedown voltage to gate driver circuit.The signal cut-in voltage exported due to electric power management circuit and signal are closed voltage and are realized regulating by non-essential resistance, therefore, clock controller needs to control electric power management circuit to gate driver circuit output signal cut-in voltage and signal closedown voltage by the mode of I2C.
Certainly, in the specific implementation, the transmission mode of clock controller control electric power management circuit is not limited to the mode of I2C, can also be other similar transmission modes, not limit at this.
In the specific implementation, step S102 clock controller in the said method that the embodiment of the present invention provides controls common electrode driving circuit and exports public electrode voltages, specifically can realize in the following manner: clock controller controls common electrode driving circuit in the mode of SPI and exports public electrode voltages; Or clock controller controls common electrode driving circuit in the mode of I2C and exports public electrode voltages, does not limit at this.
Certainly, in the specific implementation, the transmission mode that clock controller 202 controls common electrode driving circuit 204 is not limited to the mode of SPI or I2C, can also be other similar transmission modes, not limit at this.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of driving circuit of display panels, as shown in Figure 2, comprising:
Temperature detector 201, the temperature for environment residing for the display panels detected sends to clock controller;
Particularly, thermistor detected temperatures can be utilized, or also can utilize can other devices of detected temperatures in real time, do not limit at this;
Clock controller 202, for closing the corresponding relation of voltage, public electrode voltages according to the temperature that receives and the temperature prestored and signal cut-in voltage, signal, control electric power management circuit 203 and export signal cut-in voltage and signal closedown voltage to gate driver circuit, control common electrode driving circuit 204 and export public electrode voltages.
Particularly, in clock controller 202, be previously stored with the optimum setting value of signal cut-in voltage corresponding to different temperatures, the best setting of signal closedown voltage and the optimum setting value of public electrode voltages.Wherein, clock controller is specifically as follows counter control register (Timer Control Register, TCON), or, clock control implement body also can be micro-control unit (Micro Control Unit, MCU), does not limit at this.
The above-mentioned driving circuit that the embodiment of the present invention provides, the temperature sent according to temperature detector due to clock controller and the temperature prestored and signal cut-in voltage, signal close the corresponding relation of voltage, public electrode voltages, control electric power management circuit and export signal cut-in voltage and signal closedown voltage to gate driver circuit, control common electrode driving circuit and export public electrode voltages; Like this, signal cut-in voltage, signal closedown voltage and public electrode voltages can be adjusted in real time to optimum value according to the temperature of environment residing for display panels, thus due to the threshold voltage V of TFT when can avoid display panels in hot environment
thto low-voltage drift, the leakage current of TFT increased and affect display quality, due to signal cut-in voltage V simultaneously when can also avoid display panels in low temperature environment
ghincrease the voltage difference delta V before and after the voltage generation saltus step making pixel electrode
pbecome large and occur serious flicker problem.
In the specific implementation, in the above-mentioned driving circuit that the embodiment of the present invention provides, temperature detector 201, the temperature specifically for environment residing for the display panels detected sends to clock controller 202 in the mode of SPI or I2C.
Certainly, in the specific implementation, temperature detector 201 is not limited to the mode of SPI or I2C to the transmission mode that clock controller 202 sends instruction, can also be other similar transmission modes, not limit at this.
In the specific implementation, in the above-mentioned driving circuit that the embodiment of the present invention provides, clock controller 202, specifically for controlling electric power management circuit 203 in the mode of I2C.The signal cut-in voltage exported due to electric power management circuit 203 and signal are closed voltage and are realized regulating by non-essential resistance, therefore, clock controller 202 needs to control electric power management circuit 203 to gate driver circuit output signal cut-in voltage and signal closedown voltage by the mode of I2C.
Certainly, in the specific implementation, the transmission mode that clock controller 202 controls electric power management circuit 203 is not limited to the mode of I2C, can also be other similar transmission modes, not limit at this.
In the specific implementation, in the above-mentioned driving circuit that the embodiment of the present invention provides, clock controller 202, specifically for controlling common electrode driving circuit 204 in the mode of SPI or I2C.
Certainly, in the specific implementation, the transmission mode that clock controller 202 controls common electrode driving circuit 204 is not limited to the mode of SPI or I2C, can also be other similar transmission modes, not limit at this.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of display panels, comprises above-mentioned driving circuit that the embodiment of the present invention provides, the relatively array base palte put and subtend substrate and the liquid crystal layer between array base palte and subtend substrate; The temperature of driving circuit environment residing for display panels exports signal cut-in voltage to gate driver circuit and signal closes voltage, and exports public electrode voltages to public electrode circuit.Particularly, gate driver circuit in driving circuit specifically can be positioned at array base palte side, i.e. GOA (Gate Driver on the Array) structure, or, gate driver circuit in driving circuit also can be positioned at subtend substrate side, does not limit at this; Further, the public electrode circuit in driving circuit specifically can be positioned at array base palte side, or the public electrode circuit in driving circuit also can be positioned at subtend substrate side, does not limit at this.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of display device, comprise the above-mentioned display panels that the embodiment of the present invention provides, this display device can be: any product or parts with Presentation Function such as mobile phone, panel computer, televisor, display, notebook computer, digital album (digital photo frame), navigating instrument.The enforcement of this display device see the embodiment of above-mentioned display panels, can repeat part and repeats no more.
A kind of display panels that the embodiment of the present invention provides, its driving method, its driving circuit and display device, this driving method comprises: the temperature of environment residing for the display panels detected is sent to clock controller by temperature detector; Clock controller closes the corresponding relation of voltage, public electrode voltages according to the temperature received and the temperature prestored and signal cut-in voltage, signal, control electric power management circuit and export signal cut-in voltage and signal closedown voltage to gate driver circuit, control common electrode driving circuit and export public electrode voltages; Like this, signal cut-in voltage, signal closedown voltage and public electrode voltages can be adjusted in real time to optimum value according to the temperature of environment residing for display panels, thus can avoid display panels in different temperatures environment, occur the problem of display frame exception.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a driving method for display panels, is characterized in that, comprising:
The temperature of environment residing for the display panels detected is sent to clock controller by temperature detector;
Clock controller closes the corresponding relation of voltage, public electrode voltages according to the described temperature received and the temperature prestored and signal cut-in voltage, signal, control electric power management circuit and export signal cut-in voltage and signal closedown voltage to gate driver circuit, control common electrode driving circuit and export public electrode voltages.
2. the method for claim 1, is characterized in that, the temperature of environment residing for the display panels detected is sent to clock controller by described temperature detector, specifically comprises:
The temperature of environment residing for the display panels detected is sent to clock controller in the mode of Serial Peripheral Interface (SPI) or twin wire universal serial bus by temperature detector.
3. the method for claim 1, is characterized in that, described clock controller controls electric power management circuit and exports signal cut-in voltage and signal closedown voltage to gate driver circuit, specifically comprises:
The mode of clock controller universal serial bus with the 2-wire controls electric power management circuit and exports signal cut-in voltage to gate driver circuit and signal closes voltage.
4. the method for claim 1, is characterized in that, described clock controller controls common electrode driving circuit and exports public electrode voltages, specifically comprises:
Clock controller controls common electrode driving circuit output public electrode voltages in the mode of Serial Peripheral Interface (SPI) or twin wire universal serial bus.
5. a driving circuit for display panels, is characterized in that, comprising:
Temperature detector, the temperature for environment residing for the display panels detected sends to clock controller;
Clock controller, for closing the corresponding relation of voltage, public electrode voltages according to the described temperature that receives and the temperature prestored and signal cut-in voltage, signal, control electric power management circuit and export signal cut-in voltage and signal closedown voltage to gate driver circuit, control common electrode driving circuit and export public electrode voltages.
6. driving circuit as claimed in claim 5, it is characterized in that, described temperature detector, the temperature specifically for environment residing for the display panels detected sends to clock controller in the mode of Serial Peripheral Interface (SPI) or twin wire universal serial bus.
7. driving circuit as claimed in claim 5, is characterized in that, described clock controller, and the mode specifically for universal serial bus with the 2-wire controls electric power management circuit.
8. driving circuit as claimed in claim 5, is characterized in that, described clock controller, specifically for controlling common electrode driving circuit in the mode of Serial Peripheral Interface (SPI) or twin wire universal serial bus.
9. a display panels, is characterized in that, comprising: the driving circuit as described in any one of claim 5-8, relatively and the array base palte put and subtend substrate and as described in array base palte and as described in liquid crystal layer between subtend substrate; Wherein, described driving circuit is used for exporting signal cut-in voltage and signal cut out voltage to the gate driver circuit be arranged in described array base palte or described subtend substrate, and exports public electrode voltages to the public electrode circuit be arranged in described array base palte or described subtend substrate.
10. a display device, is characterized in that, comprising: display panels as claimed in claim 9.
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| CN201510191734.7A CN104778934A (en) | 2015-04-21 | 2015-04-21 | Liquid crystal display panel, driving method and driving circuit thereof and display device |
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| CN201510191734.7A CN104778934A (en) | 2015-04-21 | 2015-04-21 | Liquid crystal display panel, driving method and driving circuit thereof and display device |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105096880A (en) * | 2015-08-24 | 2015-11-25 | 武汉华星光电技术有限公司 | Liquid crystal display panel and driving method thereof |
| CN106356031A (en) * | 2016-10-10 | 2017-01-25 | 南京中电熊猫液晶显示科技有限公司 | Liquid crystal display device and control method of GOA (gate on array) circuit of liquid crystal display device |
| CN107093411A (en) * | 2017-06-29 | 2017-08-25 | 深圳市华星光电技术有限公司 | Liquid crystal panel drive circuit and liquid crystal display |
| CN107424577A (en) * | 2017-08-15 | 2017-12-01 | 京东方科技集团股份有限公司 | A kind of display driver circuit, display device and its driving method |
| CN107799049A (en) * | 2016-08-31 | 2018-03-13 | 三星显示有限公司 | Display device |
| CN105679227B (en) * | 2016-02-01 | 2018-07-17 | 友达光电股份有限公司 | Display device and method for providing supply voltage of grid drive circuit |
| WO2018153050A1 (en) * | 2017-02-23 | 2018-08-30 | 京东方科技集团股份有限公司 | Common voltage control circuit and method, display panel and display apparatus |
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| CN110114820A (en) * | 2016-12-23 | 2019-08-09 | 微软技术许可有限责任公司 | Techniques for Robust Reliable Operation of Thin Film Transistor (TFT) Displays |
| CN111081195A (en) * | 2019-11-28 | 2020-04-28 | Tcl华星光电技术有限公司 | Voltage regulating circuit, display panel and high-temperature reliability testing method thereof |
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| CN105679227B (en) * | 2016-02-01 | 2018-07-17 | 友达光电股份有限公司 | Display device and method for providing supply voltage of grid drive circuit |
| CN107799049A (en) * | 2016-08-31 | 2018-03-13 | 三星显示有限公司 | Display device |
| CN106356031B (en) * | 2016-10-10 | 2019-04-05 | 南京中电熊猫液晶显示科技有限公司 | The control method of liquid crystal display device and its GOA circuit |
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| CN110114820A (en) * | 2016-12-23 | 2019-08-09 | 微软技术许可有限责任公司 | Techniques for Robust Reliable Operation of Thin Film Transistor (TFT) Displays |
| US10867573B2 (en) | 2017-02-23 | 2020-12-15 | Boe Technology Group Co., Ltd. | Common voltage control circuit and method, display panel and display device |
| WO2018153050A1 (en) * | 2017-02-23 | 2018-08-30 | 京东方科技集团股份有限公司 | Common voltage control circuit and method, display panel and display apparatus |
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