CN101494027A - Time schedule controller and method for processing and controlling display signal - Google Patents
Time schedule controller and method for processing and controlling display signal Download PDFInfo
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- CN101494027A CN101494027A CNA2008100051385A CN200810005138A CN101494027A CN 101494027 A CN101494027 A CN 101494027A CN A2008100051385 A CNA2008100051385 A CN A2008100051385A CN 200810005138 A CN200810005138 A CN 200810005138A CN 101494027 A CN101494027 A CN 101494027A
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Abstract
The invention relates to a time schedule controller and a display signal processing control method thereof, which detects the input external signals to judge whether the time schedule controller is stopped so as to send low driving scene display data to a liquid-crystal display panel in advance when the time schedule controller is stopped, cause the power discharge rates of a liquid-crystal capacitor and a storage capacitor of the liquid-crystal display panel to be increased and shorten the power discharge rate of residual electric charge, thus lowering the occurrence possibility of tides.
Description
Technical field
The invention relates to a kind of time schedule controller and shows signal process control method thereof, refer to a kind of time schedule controller and shows signal process control method thereof that is applicable to display panels especially.
Background technology
The displaying principle of display panels (LCD) is by the control panel driving voltage, with the electric field level between liquid crystal capacitance in the control panel and the storage capacitors, makes the output of controlling display light source between liquid crystal wherein according to the electric field level upset.If with normally white display panels (NormallyWhite Type LCD) is example, when it is opened and is not given driving voltage and make liquid crystal keep not rollover states at backlight, be to present white picture, and when making the liquid crystal upset when giving a predetermined driving voltage, picture promptly presents light and shade to be changed.
Display panels is store charge when accepting driving voltage by liquid crystal capacitance and storage capacitors, make the liquid crystal rollover states between display panels be kept a period of time, so that picture continues to the next picture that upgrades, and this moment, if suddenly the power supply of display panels is turned off, still need because of liquid crystal capacitance and storage capacitors and just electric charge wherein can be discharged fully after a period of time, hereat, residual charge still in this section period liquid crystal capacitance and storage capacitors influences picture and produce tidal phenomena.
Take place in order to reduce tidal phenomena, known display panels need add one and reset chip (Reset IC), is to be in conducting state with control grid drive chip (Gate IC) when shutting down, quicken the residual charge velocity of discharge of interior liquid crystal capacitance of panel and storage capacitors thus, to shorten the time that tidal phenomena occurs.Yet use is reseted chip and is faced following several shortcomings: one, need careful choosing to reset the operation voltage specification of chip.If it is too little to reset the operation voltage of chip, required voltage in the time of then can't supplying with the grid drive chip conducting, and if select the reset chip of operation voltage near display panels input voltage (Vin), when it suffers noise effect when input voltage, also may make and reset the chip misjudgment and produce misoperation.Two, must use and have the chip of reseting that makes all grid drive chip conducting simultaneously functions.Three, chip is reseted in use will increase cost.
Summary of the invention
The objective of the invention is to, a kind of time schedule controller is provided, its be by time schedule controller detect into external signal shut down judging whether, so that when shutdown, send the low picture video data that drives earlier to display panels, so that the liquid crystal capacitance of display panels and the storage capacitors velocity of discharge increase, and shorten the remaining charge discharge time, to reduce the generation of tidal phenomena.
The invention provides a kind of time schedule controller, it is to receive a plurality of external signals, and transmitting a plurality of picture video data to display panels via a plurality of data drivers, this time schedule controller comprises a Data Receiving unit, a data detection unit, a data output unit, low picture video data generation unit, a processing unit and the data transfer unit of driving.The Data Receiving unit receives external signal; The data detection unit electrically connects the Data Receiving unit, and its reception and detecting external signal; The data output unit electrically connects the data detection unit, and when detecting external signal in the data detection unit, produces the picture video data according to external signal; The low picture video data generation unit that drives electrically connects the data detection unit, and when data detection unit detecting external signal is the indication shutdown, produces a low driving picture video data; Processing unit electrically connects data output unit and the low video data generation unit that drives, and its control picture video data and the low output that drives the picture video data; Data transfer unit electrically connects processing unit and data driver, and it transmits the picture video data and hangs down driving picture video data to data driver.
In addition, the present invention also provides a kind of shows signal process control method, and it is to apply to time schedule controller, and time schedule controller receives an external signal, and transmitting a plurality of picture video datas data driver at the most, the method comprises the following steps: to detect the signal terminating time of external signal; And, transmit a low picture video data that drives to data driver when signal terminating time during more than or equal to a schedule time.
The present invention provides a kind of shows signal process control method in addition, it is to apply to time schedule controller, time schedule controller receives an external signal, and transmits a plurality of picture video datas data driver at the most, and the method comprises the following steps: to detect the voltage of external signal; And when voltage is less than or equal to a predetermined voltage, transmit a low picture video data that drives to data driver.
In the middle of a preferred embodiment of the present invention, the data detection unit is the magnitude of voltage of detecting external signal, yet in the middle of another preferred embodiment, it is the signal terminating time of detecting external signal.
Then, the present invention is less than or equal to a predetermined voltage with the magnitude of voltage that detects to be designated as an enforcement aspect as shutdown, and so it is designated as its preferable enforcement aspect more than or equal to a schedule time as shutdown with the signal terminating time that detects.
Secondly, in the present invention, above-mentioned low driving picture video data can be a white picture video data or a black picture video data, it is to be as the criterion with liquid crystal indicator shown picture color when liquid crystal hangs down driving condition that the present invention uses, and the low picture video data that drives is for making data driver transmit the liquid crystal of low driving voltage to display panels, so that liquid crystal does not overturn.
Hereat, by above-mentioned gimmick, the present invention be by time schedule controller detect into external signal shut down judging whether, so that when shutdown, send the low picture video data that drives earlier to display panels, so that the liquid crystal capacitance of display panels and the storage capacitors velocity of discharge increase, and shorten the remaining charge discharge time, to reduce the generation of tidal phenomena.
Description of drawings
For making the auditor further cognitive and understanding be arranged to feature of the present invention, purpose and function, hereinafter special theory reason with dependency structure accompanying drawing of the present invention and design describes, so that the auditor can understand characteristics of the present invention, detailed description is presented below, wherein:
Fig. 1 is the time schedule controller calcspar of a preferred embodiment of the present invention.
Fig. 2 is the shows signal processing controls process flow diagram of Fig. 1 embodiment.
Fig. 3 is the control clock pulse synoptic diagram of Fig. 1 embodiment.
Fig. 4 is the shows signal processing controls process flow diagram of another preferred embodiment of the present invention.
Fig. 5 is the control clock pulse synoptic diagram of Fig. 4 embodiment.
Wherein:
The 1-time schedule controller
The 2-data driver
The 3-scanner driver
11-Data Receiving unit
12-data detection unit
14-data output unit
The 15-processing unit
The 16-data transfer unit
The low picture video data generation unit that drives of 13-
Step 210,220,230,240,250,260,270,280
Step 410,420,430,440,450,460
Embodiment
At first, please refer to the time schedule controller calcspar of Fig. 1 a preferred embodiment of the present invention, time schedule controller 1 is to receive a plurality of external signals, as: DE (Data Enable), Vin etc., and control the work time pulse of a plurality of data drivers 2 and a plurality of scanner drivers 3, to transmit a plurality of picture video data to display panels (not shown), so that the display frame of feed flow LCD panel via data driver 2 and scanner driver 3.
As shown in FIG., time schedule controller 1 comprises: Data Receiving unit 11, data detection unit 12, low picture video data generation unit 13, data output unit 14, processing unit 15 and the data transfer unit 16 of driving.
Please in the lump with reference to figure 2, Fig. 3, Fig. 2 shows the shows signal processing controls process flow diagram of present embodiment in addition, and Fig. 3 shows the control clock pulse synoptic diagram of present embodiment.After time schedule controller 1 normal running (step 240), data detection unit 12 receives the Vin magnitude of voltage of external signal, and Data Receiving unit 11 receives the DE signal of external signal, and will be sent to data detection unit 12 (step 210), in one embodiment, Data Receiving unit 11 is to be Low Voltage Differential Signal (LowVoltage Differential Signal, LVDS) interface, so in other embodiment, Data Receiving unit 11 can be low-swing differential signal (Reduced Swing Differential Signal, RSDS) interface.
Then, whether data detection unit 12 detecting external signals exist (step 220), when data detection unit 12 detects external signal when existing, data output unit 14 is to produce STH (Source IC Start Pulse according to external signal, horizontal initial pulse), LP (Source IC Latch Pulse, the source electrode latch pulse), CPV (GateIC Clock Signal, the grid clock signal), OE (Gate ICOutput Enable, the grid output enable) picture shows signal such as is in order to do showing (step 230) for export display panels to via data driver 2.
At first be that generation CPV signal and OE signal are so that scanner driver 3 drives the switch module (not shown) of display panels, successively produce the STH signal, so that data driver 2 begins to receive the video data from time schedule controller 1 output, and when the DE signal is noble potential, judge that external signal is to be valid data, data driver 2 also is stored in the video data that receives in the buffer unit (not shown) in it, with when the LP signal produces pulse wave, stored video data is converted to analog voltage signal to drive display panels.
On the other hand, data detection unit 12 also judges whether external signal is indication shutdown (step 250), and in the present embodiment, it is to be less than or equal to a predetermined voltage Vact as the shutdown indication with the Vin magnitude of voltage that detects.
Yet, when data detection unit 12 detects external signal for the indication shutdown, the low picture video data generation unit 13 that drives is to produce a low picture video data (step 260) that drives, so that data driver 2 transmits the liquid crystal of a low driving voltage to display panels, controlling the electric field of display panels by this reduces to minimum, the liquid crystal drive voltage minimum, and liquid crystal capacitance and keep the electric capacity store charge minimum and liquid crystal is not overturn, so that the postboost liquid crystal velocity of discharge of display panels accelerates and reduces liquid crystal discharge required time, and the generation of the tidal phenomena of avoiding shutting down.In the present embodiment, low driving picture video data is to be a white picture video data, and so in the middle of other embodiment, the low picture video data that drives also can be a black picture video data.
Please in the lump with reference to figure 1, Fig. 4 and Fig. 5 to understand another preferred embodiment of the present invention, Fig. 4 is the shows signal processing controls process flow diagram of this embodiment, the control clock pulse synoptic diagram of Fig. 5 displayed map 4 embodiment.Briefly, present embodiment and the main difference of a last embodiment are the signal terminating time for its detecting external signal, and with signal terminating time of detecting greater than a schedule time as the shutdown indication.
As shown in FIG., after time schedule controller 1 normal running, Data Receiving unit 11 receives the DE signal (step 410) of external signals, and it is sent to data detection unit 12, with number termination time of judging the DE signal by data detection unit 12 whether greater than a schedule time (step 420), in the present embodiment, this schedule time is the some multiples for the DE signal period, and so in other embodiment, this schedule time also can be zero, that is, DE signal one stops input and promptly is judged as shutdown.
When judging that the signal terminating time is less than the schedule time, data output unit 14 produces and output picture video data, show (step 430) for export display panels to via data driver 2, yet, when signal terminating time during more than or equal to the schedule time, the low picture video data generation unit 13 that drives is to produce a low picture video data (step 440) that drives, and produces tidal phenomena when avoiding shutting down to reach.
And in the present embodiment, when processing unit 15 receives low when driving the picture video data, be the output that stops the picture video data, and switch the low picture video data that drives of output to data transfer unit 16 (step 450), will be sent to data driver 2 from the picture video data of handling unit 15 and the low picture video data that drives by data transfer unit 16.
Hereat, can learn from above-mentioned, the present invention detects the external signal of input to judge whether shutdown by time schedule controller, so that when shutdown, send the low picture video data that drives earlier to display panels, so that the liquid crystal capacitance of display panels and the storage capacitors velocity of discharge increase, and shorten the remaining charge discharge time, to reduce the generation of tidal phenomena.
The foregoing description only is to give an example for convenience of description, and the interest field that the present invention advocated is from should be with described being as the criterion of claim scope of the present invention, but not only limits to the foregoing description.
Claims (10)
1, a kind of time schedule controller receives a plurality of external signals, and transmits a plurality of picture video data to display panels via a plurality of data drivers, it is characterized in that, comprising:
One Data Receiving unit receives this a plurality of external signals;
One data detection unit electrically connects this Data Receiving unit, and its reception and these a plurality of external signals of detecting;
One data output unit electrically connects this data detection unit, and when detecting this a plurality of external signal in this data detection unit, produces these a plurality of picture video datas according to these a plurality of external signals;
The one low picture video data generation unit that drives is to electrically connect this data detection unit, and when these data detection unit these a plurality of external signals of detecting are the indication shutdown, produces a low driving picture video data;
One processing unit is to electrically connect this data output unit and should lowly drive the video data generation unit, and it is these a plurality of picture video datas of control, and this low output that drives the picture video data; And
One data transfer unit is this processing unit of electric connection, reach these a plurality of data drivers, and it is these a plurality of picture video datas of transmission, reaches and should hang down extremely these a plurality of data drivers of driving picture video data.
2, time schedule controller as claimed in claim 1 is characterized in that, wherein this data detection unit is the magnitude of voltage of these a plurality of external signals of detecting.
3, time schedule controller as claimed in claim 2 is characterized in that, it is to be less than or equal to a predetermined voltage as the shutdown indication with this magnitude of voltage.
4, time schedule controller as claimed in claim 1 is characterized in that, wherein this data detection unit is the signal terminating time of these a plurality of external signals of detecting.
5, time schedule controller as claimed in claim 4 is characterized in that, it is to indicate as shutdown more than or equal to a schedule time with this signal terminating time.
6, time schedule controller as claimed in claim 1 is characterized in that, wherein should lowly drive the picture video data is to be a white picture video data.
7, time schedule controller as claimed in claim 1 is characterized in that, wherein should lowly drive the picture video data is to make these a plurality of data drivers transmit the liquid crystal of a low driving voltage to this display panels.
8, a kind of shows signal process control method is to apply to time schedule controller, and this time schedule controller receives an external signal, and transmits a plurality of picture video datas data driver at the most, it is characterized in that, comprising:
Detect the signal terminating time of this external signal; And
When this signal terminating time during, transmit a low picture video data that drives to these a plurality of data drivers more than or equal to a schedule time.
9, shows signal process control method as claimed in claim 9 is characterized in that, wherein should lowly drive the picture video data is to be a white picture video data.
10, a kind of shows signal process control method is to apply to time schedule controller, and this time schedule controller receives an external signal, and transmits a plurality of picture video datas data driver at the most, it is characterized in that, comprising:
Detect the voltage of this external signal; And
When this voltage is when being less than or equal to a predetermined voltage, transmit a low picture video data that drives to these a plurality of data drivers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100051385A CN101494027A (en) | 2008-01-22 | 2008-01-22 | Time schedule controller and method for processing and controlling display signal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100051385A CN101494027A (en) | 2008-01-22 | 2008-01-22 | Time schedule controller and method for processing and controlling display signal |
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| CN101494027A true CN101494027A (en) | 2009-07-29 |
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| CNA2008100051385A Pending CN101494027A (en) | 2008-01-22 | 2008-01-22 | Time schedule controller and method for processing and controlling display signal |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290032A (en) * | 2010-06-18 | 2011-12-21 | 群康科技(深圳)有限公司 | Liquid crystal display |
| WO2016086639A1 (en) * | 2014-12-02 | 2016-06-09 | 京东方科技集团股份有限公司 | Device and method for driving display panel, and display device |
| CN107193168A (en) * | 2017-07-17 | 2017-09-22 | 深圳市华星光电半导体显示技术有限公司 | A kind of array base palte and display panel |
| CN108121094A (en) * | 2017-12-12 | 2018-06-05 | 深圳市华星光电技术有限公司 | The shutdown charging method and circuit of a kind of liquid crystal display panel |
| CN108172184A (en) * | 2018-01-02 | 2018-06-15 | 京东方科技集团股份有限公司 | Shutdown discharge circuit and display module |
| CN109346022A (en) * | 2018-12-11 | 2019-02-15 | 惠科股份有限公司 | Protection method of display panel, display panel and computer readable storage medium |
| CN111161686A (en) * | 2018-11-08 | 2020-05-15 | 南京瀚宇彩欣科技有限责任公司 | Electronic system and driving method thereof |
| CN112369988A (en) * | 2020-10-29 | 2021-02-19 | 华帝股份有限公司 | Hidden control panel structure, household appliance and control method |
-
2008
- 2008-01-22 CN CNA2008100051385A patent/CN101494027A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290032A (en) * | 2010-06-18 | 2011-12-21 | 群康科技(深圳)有限公司 | Liquid crystal display |
| WO2016086639A1 (en) * | 2014-12-02 | 2016-06-09 | 京东方科技集团股份有限公司 | Device and method for driving display panel, and display device |
| US9767758B2 (en) | 2014-12-02 | 2017-09-19 | Boe Technology Group Co., Ltd. | Driving apparatus of display panel and driving method thereof, display device |
| CN107193168A (en) * | 2017-07-17 | 2017-09-22 | 深圳市华星光电半导体显示技术有限公司 | A kind of array base palte and display panel |
| CN108121094A (en) * | 2017-12-12 | 2018-06-05 | 深圳市华星光电技术有限公司 | The shutdown charging method and circuit of a kind of liquid crystal display panel |
| CN108172184A (en) * | 2018-01-02 | 2018-06-15 | 京东方科技集团股份有限公司 | Shutdown discharge circuit and display module |
| CN111161686A (en) * | 2018-11-08 | 2020-05-15 | 南京瀚宇彩欣科技有限责任公司 | Electronic system and driving method thereof |
| CN109346022A (en) * | 2018-12-11 | 2019-02-15 | 惠科股份有限公司 | Protection method of display panel, display panel and computer readable storage medium |
| CN112369988A (en) * | 2020-10-29 | 2021-02-19 | 华帝股份有限公司 | Hidden control panel structure, household appliance and control method |
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Open date: 20090729 |