CN103021363A - Overdrive method, device and system - Google Patents
Overdrive method, device and system Download PDFInfo
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- CN103021363A CN103021363A CN2012105406559A CN201210540655A CN103021363A CN 103021363 A CN103021363 A CN 103021363A CN 2012105406559 A CN2012105406559 A CN 2012105406559A CN 201210540655 A CN201210540655 A CN 201210540655A CN 103021363 A CN103021363 A CN 103021363A
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Abstract
The invention relates to the technical field of liquid crystal display, in particular to an overdrive method, device and system. The overdrive method, device and system are used for improving picture display quality of a liquid crystal display device. The overdrive method comprises the steps of obtaining current temperature information of set positions of a liquid crystal panel collected by a temperature sensor; determining liquid crystal panel temperatures corresponding to each temperature zone according to the current temperature information and first correspondence relations between set different temperature information and the liquid crystal panel temperatures corresponding to each temperature zone of the liquid crystal panel; and outputting overdrive modification values corresponding to each temperature zone to the liquid crystal panel according to the liquid crystal panel temperatures corresponding to each temperature zone and second correspondence relations between different liquid crystal panel temperatures and the overdrive modification values. By utilizing the overdrive method to drive the liquid crystal panel, liquid crystals in the liquid crystal panel can have the same response time, and accordingly the picture display quality of the liquid crystal display device is improved.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly a kind of over-driving method, Apparatus and system.
Background technology
The displaying principle of liquid crystal panel is that liquid crystal twists under the effect that adds driving voltage, thereby realizes the demonstration of picture; And liquid crystal reverses and needs the regular hour, it is the response time of liquid crystal, response time is the important performance characteristic of liquid crystal panel, if the response time is long, image original when picture conversion can not be disappeared at once and produces motion blur phenomenon, especially when showing dynamic menu, as watch automobile race, motion blur phenomenon is serious, affects the picture disply quality of liquid crystal panel, therefore, the response time of shortening liquid crystal is most important.
At present, a kind of method commonly used is to adopt (the Over Driving Control that overdrives, abbreviation ODC) technology shortens the response time of liquid crystal, overdrive technique is based on and changes the method that driving voltage improves liquid crystal gray scale response speed, the voltage that applies is larger, and the response time of liquid crystal is just shorter.More particularly, utilize an over-driving look-up table (ODC Table) to store relevant a plurality of modified values of overdriving, processor is selected the corresponding modified value of overdriving according to current GTG and target gray scale in over-driving look-up table, and outputs it to liquid crystal panel to finish picture disply.
But the factor that affects the liquid crystal response time also has temperature, under different temperature, there is very large difference the response time of liquid crystal, therefore, if under each temperature, all use an over-driving look-up table, will cause in the liquid crystal panel response time of liquid crystal under different temperatures widely different, namely the response time of liquid crystal is inconsistent in the liquid crystal panel, produce motion blur phenomenon, have a strong impact on the picture disply quality of liquid crystal panel.
Summary of the invention
The object of the present invention is to provide a kind of over-driving method, Apparatus and system, be used for improving the picture disply quality of liquid crystal indicator.
To achieve these goals, the invention provides following technical scheme:
A kind of over-driving method comprises:
Obtain the Current Temperatures information of the liquid crystal panel desired location that temperature sensor gathers;
According to described Current Temperatures information, and the first corresponding relation between liquid crystal panel temperature corresponding to each humidity province of different temperature informations and liquid crystal panel of setting, determine the liquid crystal panel temperature that each humidity province is corresponding;
The liquid crystal panel temperature corresponding according to each humidity province, and the different liquid crystal panel temperature of setting and the second corresponding relation between the modified value of overdriving are exported the modified value of overdriving corresponding to each humidity province to liquid crystal panel.
Preferably, above-mentioned over-driving method, before or after the described Current Temperatures information of obtaining the liquid crystal panel desired location that temperature sensor gathers, also comprise step: read described the first corresponding relation from memory device, described the first corresponding relation is pre-stored information in memory device.
Preferably, above-mentioned over-driving method, before or after determining liquid crystal panel temperature corresponding to each humidity province, also comprise step: read described the second corresponding relation from memory device, described the second corresponding relation is pre-stored information in memory device.
The present invention also provides a kind of over-driving device simultaneously, comprising:
Acquiring unit is used for obtaining the Current Temperatures information of the liquid crystal panel desired location that temperature sensor gathers;
Control module is used for according to described Current Temperatures information, and the first corresponding relation between liquid crystal panel temperature corresponding to each humidity province of different temperature informations and liquid crystal panel of setting, determines the liquid crystal panel temperature that each humidity province is corresponding; The liquid crystal panel temperature corresponding according to each humidity province, and different liquid crystal panel temperature and the second corresponding relation between the modified value of overdriving are exported the modified value of overdriving corresponding to each humidity province to liquid crystal panel.
The present invention also provides a kind of overdrive system simultaneously, comprising:
Liquid crystal panel;
Temperature sensor is positioned at the desired location of described liquid crystal panel, is used for gathering the Current Temperatures information of described liquid crystal panel desired location;
Opertaing device, respectively with described liquid crystal panel be connected temperature sensor signal and be connected, be used for according to described Current Temperatures information, and the first corresponding relation between liquid crystal panel temperature corresponding to each humidity province of different temperature informations and liquid crystal panel of setting, determine the liquid crystal panel temperature that each humidity province is corresponding; The liquid crystal panel temperature corresponding according to each humidity province, and different liquid crystal panel temperature and the second corresponding relation between the modified value of overdriving are exported the modified value of overdriving corresponding to each humidity province to liquid crystal panel.
Preferably, described opertaing device comprises:
Storer, store the first corresponding relation between liquid crystal panel temperature corresponding to each humidity province of different temperature informations and liquid crystal panel, different liquid crystal panel temperature and the second corresponding relation between the modified value of overdriving, and different temperature informations corresponding liquid crystal panel temperature distributing rule and different liquid crystal panel temperature corresponding over-driving look-up table respectively respectively;
Processor is connected with memory signals, is used for obtaining the Current Temperatures information of the liquid crystal panel desired location that temperature sensor gathers; And according to described Current Temperatures information, and the first corresponding relation between liquid crystal panel temperature corresponding to each humidity province of different temperature informations and liquid crystal panel of setting, determine the liquid crystal panel temperature that each humidity province is corresponding; The liquid crystal panel temperature corresponding according to each humidity province, and different liquid crystal panel temperature and the second corresponding relation between the modified value of overdriving are exported the modified value of overdriving corresponding to each humidity province to liquid crystal panel.
Preferably, described opertaing device is time schedule controller.
Over-driving method provided by the invention at first obtains the Current Temperatures information of the liquid crystal panel desired location that temperature sensor gathers; Then according to described Current Temperatures information, and the first corresponding relation between liquid crystal panel temperature corresponding to each humidity province of different temperature informations and liquid crystal panel of setting, determine the liquid crystal panel temperature that each humidity province is corresponding; The liquid crystal panel temperature corresponding according to each humidity province, and different liquid crystal panel temperature and the second corresponding relation between the modified value of overdriving are exported the modified value of overdriving corresponding to each humidity province to liquid crystal panel.Therefore, compared with prior art, adopt over-driving method provided by the invention, for the liquid crystal that is in different temperatures in the liquid crystal panel provides the difference modified value of overdriving, make the liquid crystal in the liquid crystal panel have the identical response time, thereby improved the picture disply quality of liquid crystal indicator.
Description of drawings
Fig. 1 is the schematic flow sheet of over-driving method in the embodiment of the invention;
Fig. 2 is liquid crystal panel temperature partition table in the embodiment of the invention;
Fig. 3 a is the over-driving look-up table of liquid crystal panel temperature T 2 correspondences in the embodiment of the invention;
Fig. 3 b is the over-driving look-up table of liquid crystal panel temperature T 3 correspondences in the embodiment of the invention;
Fig. 4 is the structural representation of over-driving device in the embodiment of the invention;
Fig. 5 is the structural representation of overdrive system in the embodiment of the invention.
Embodiment
Existing liquid crystal panel generally adopts overdrive technique to improve the response speed of liquid crystal, shortens the response time of liquid crystal; But the factor that affects the liquid crystal response time also has temperature, under different temperature, there is very large difference the response time of liquid crystal, therefore, if under each temperature, all use an over-driving look-up table, will cause in the liquid crystal panel response time of liquid crystal under different temperatures widely different, namely the response time of liquid crystal is inconsistent in the liquid crystal panel, produce motion blur phenomenon, have a strong impact on the picture disply quality of liquid crystal panel.
In view of this, the invention provides a kind of improved technical scheme, the Current Temperatures information of the liquid crystal panel desired location that gathers according to temperature sensor, and the first corresponding relation between liquid crystal panel temperature corresponding to each humidity province of different temperature informations and liquid crystal panel of setting, determine the liquid crystal panel temperature that each humidity province is corresponding; The liquid crystal panel temperature corresponding according to each humidity province, and different liquid crystal panel temperature and the second corresponding relation between the modified value of overdriving are exported the modified value of overdriving corresponding to each humidity province to liquid crystal panel.Adopt above-mentioned over-driving method can make that liquid crystal has the same response time in the liquid crystal panel, thereby improve the picture disply quality of liquid crystal indicator.
In order to make those skilled in the art better understand technical scheme of the present invention, below in conjunction with Figure of description the embodiment of the invention is described in detail.
As shown in Figure 1, the invention provides a kind of over-driving method, comprising:
Adopt over-driving method provided by the invention, at first obtain the Current Temperatures information of the liquid crystal panel desired location that temperature sensor gathers; Then obtain liquid crystal panel temperature corresponding to each humidity province of liquid crystal panel according to Current Temperatures information and the first corresponding relation; Reach liquid crystal panel temperature corresponding to each humidity province of liquid crystal panel under Current Temperatures according to the second corresponding relation, obtain the modified value of overdriving corresponding to each humidity province, send at last liquid crystal panel, finish the picture disply of liquid crystal panel.More particularly, the Current Temperatures information of the liquid crystal panel desired location that gathers according to temperature sensor, and liquid crystal panel temperature distributing rule corresponding to different temperature informations that record of experiment, liquid crystal panel is divided into a plurality of humidity provinces, the corresponding liquid crystal panel temperature in each humidity province; The liquid crystal panel temperature corresponding according to each humidity province of liquid crystal panel, and each corresponding over-driving look-up table of the different liquid crystal panel temperature of setting, determine under Current Temperatures information an over-driving look-up table corresponding to liquid crystal panel temperature that each humidity province of liquid crystal panel is corresponding; According to current GTG and target gray scale, search the respectively over-driving look-up table of correspondence of different liquid crystal panel temperature, determine the modified value of overdriving that each humidity province of liquid crystal panel is corresponding, and export to liquid crystal panel; That is to say, by the liquid crystal in the liquid crystal panel different temperatures district is adopted different drive voltage signal, make liquid crystal corresponding to liquid crystal panel different temperatures district have the identical response time, thereby improve the picture disply quality of liquid crystal indicator.
It is worth mentioning that, the factor that affects the liquid crystal panel temperature has two: the one, and the residing environment temperature of liquid crystal panel, another is the temperature of backlight, and backlight is as pyrotoxin, and the liquid crystal panel temperature of the position of close backlight is higher; And at present the installation position of backlight on liquid crystal panel is equipped with following several: backlight is arranged on that the left side of liquid crystal panel is monolateral or the right side is monolateral, be arranged on that the upside of liquid crystal panel is monolateral or downside is monolateral, the left and right sides that is arranged on liquid crystal panel is monolateral, and is arranged on back side of liquid crystal panel etc.Therefore, for the better temperature of determining liquid crystal in the liquid crystal panel, above-mentioned desired location is generally in the position of liquid crystal panel near backlight, and for example, it is monolateral that backlight is arranged on the left side of liquid crystal panel, and better desired location is monolateral in the left side of liquid crystal panel.
Preferably, above-mentioned over-driving method, before or after the Current Temperatures information of obtaining the liquid crystal panel desired location that temperature sensor gathers, also comprise step: read described the first corresponding relation from memory device, described the first corresponding relation is pre-stored information in memory device.Particularly, under the temperature conditions of a certain position of known liquid crystal panel, can record in the laboratory temperature distributing rule of whole liquid crystal panel, therefore, can obtain each self-corresponding liquid crystal panel temperature distributing rule of different temperature informations in testing laboratory, according to the liquid crystal panel temperature distributing rule liquid crystal panel is carried out the temperature subregion, obtain each self-corresponding liquid crystal panel temperature of different humidity provinces, thereby obtain the first corresponding relation between liquid crystal panel temperature corresponding to each humidity province of different temperature informations and liquid crystal panel.
As shown in Figure 2, in the present embodiment, each self-corresponding liquid crystal panel temperature distributing rule of different temperature informations according to Current Temperatures information and storage, liquid crystal panel is divided into nine humidity provinces, certainly more multi-control more accurate in the zone of dividing, be not construed as limiting at this, wherein, the liquid crystal panel temperature corresponding to three humidity provinces of the first row is respectively T2 from left to right, T2, T2, liquid crystal panel temperature corresponding to three humidity provinces of the second row is respectively T3 from left to right, T3, T3, liquid crystal panel temperature corresponding to three humidity provinces of the third line is respectively T5 from left to right, T5, T5, as seen, after liquid crystal panel divided the humidity province, can determine the liquid crystal panel temperature that each humidity province is corresponding.
Above-mentioned over-driving method, before or after determining liquid crystal panel temperature corresponding to each humidity province, also comprise step: read described the second corresponding relation from memory device, described the second corresponding relation is pre-stored information in memory device.Continuation is referring to Fig. 2, according to mentioned above, any Current Temperatures of known liquid crystal panel, then liquid crystal panel temperature corresponding to each humidity province of liquid crystal panel determined, in the present embodiment, after liquid crystal panel being divided into nine humidity provinces, by recording the Current Temperatures of liquid crystal panel desired location, further also just determined the liquid crystal panel temperature of each humidity province, be liquid crystal panel temperature corresponding to each humidity province: the first row is respectively T2 from left to right, T2, T2, the second row is respectively T3 from left to right, T3, T3, the third line is respectively T5 from left to right, T5, T5, select a corresponding over-driving look-up table (ODC Table) for different liquid crystal panel temperature, for example, liquid crystal panel temperature corresponding to first humidity province of the left number of the first row is T2, and corresponding ODC Table is T2ODC Table, searches T2ODC Table and just can obtain the modified value of overdriving corresponding to this humidity province.
Shown in Fig. 3 a, Fig. 3 b, be respectively the T2ODC Table of liquid crystal panel temperature T 2 correspondences, the T3ODC Table of liquid crystal panel temperature T 3 correspondences.Take the T2ODC Table of liquid crystal panel temperature T 2 correspondences as example, be the zone of T2 in the liquid crystal panel temperature, switching to target gray scale 192(from current GTG 128 is next GTG) time, can find the corresponding modified value of overdriving from T2ODC Table is-14, and this modified value of overdriving-14 is flowed to the zone of liquid crystal panel temperature T 2 correspondences in the liquid crystal panel.
As shown in Figure 4, the present invention also provides a kind of over-driving device simultaneously, comprising:
The over-driving device that utilizes the present embodiment to provide can make that liquid crystal has same response speed in the liquid crystal panel, thereby has improved the picture disply quality of liquid crystal indicator.
As shown in Figure 5, the present invention also provides a kind of overdrive system simultaneously, comprising:
During implementation, temperature sensor 20 places inside or the outside of liquid crystal panel 10, is used for the Current Temperatures of sensing liquid crystal panel 10 desired locations, and the Current Temperatures that senses is converted to Current Temperatures information (data-signal) sends to opertaing device 30.
More particularly, according to each corresponding liquid crystal panel temperature distributing rule of the different temperature information of setting; And temperature corresponding to liquid crystal in direct reactive mesogen panel 10 regionals of liquid crystal panel temperature distributing rule can obtain by repeated detection in the laboratory; The Current Temperatures information of liquid crystal panel 10 desired locations that processor 32 detects according to temperature sensor 20, and in the laboratory, obtain the liquid crystal panel temperature distributing rule, by calculating liquid crystal panel is divided into a plurality of humidity provinces, continuation is referring to Fig. 2, through calculating liquid crystal panel 10 is divided into nine humidity provinces, the liquid crystal panel temperature that each humidity province is corresponding: the first row is respectively T2 from left to right, T2, T2, the second row is respectively T3 from left to right, T3, T3, the third line is respectively T5 from left to right, T5, T5, thus liquid crystal panel temperature corresponding to each humidity province of liquid crystal panel under the Current Temperatures information obtained.Then obtain the different modified value of overdriving corresponding to liquid crystal panel temperature according to the second corresponding relation, export the modified value of overdriving corresponding to each liquid crystal panel temperature to liquid crystal panel, namely export the modified value of overdriving corresponding to each humidity province to liquid crystal panel, thereby finish the picture disply of liquid crystal panel.
For simplified structure, preferably, opertaing device 30 is time schedule controller, and time schedule controller Tcon generally comprises storer and processor, is specially those skilled in the art and knows, and just repeats no more here.
Continuation is referring to Fig. 5, the temperature of liquid crystal in the heat effects liquid crystal panel 10 that light source produces in the backlight 40, therefore, preferably, temperature sensor 20 is fixed on the liquid crystal panel 10, and near backlight 40, namely temperature sensor 20 arranges near backlight 40, so arrange, the temperature that temperature sensor 20 records more can be near the actual temperature of liquid crystal in the liquid crystal panel 10.
In sum, in the present invention, the Current Temperatures information of the liquid crystal panel desired location that gathers by temperature sensor; According to described Current Temperatures information, and the first corresponding relation between liquid crystal panel temperature corresponding to each humidity province of different temperature informations and liquid crystal panel of setting, determine the liquid crystal panel temperature that each humidity province is corresponding; The liquid crystal panel temperature corresponding according to each humidity province, and different liquid crystal panel temperature and the second corresponding relation between the modified value of overdriving are exported the modified value of overdriving corresponding to each humidity province to liquid crystal panel.Therefore, compared with prior art, the present invention makes the liquid crystal in the liquid crystal panel have the identical response time for the liquid crystal that is in the different temperatures district in the liquid crystal panel provides different driving voltage, thereby has improved the picture disply quality that liquid crystal display is made.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (7)
1. the over-driving method of a liquid crystal indicator is characterized in that, comprising:
Obtain the Current Temperatures information of the liquid crystal panel desired location that temperature sensor gathers;
According to described Current Temperatures information, and the first corresponding relation between liquid crystal panel temperature corresponding to each humidity province of different temperature informations and liquid crystal panel of setting, determine the liquid crystal panel temperature that each humidity province is corresponding;
The liquid crystal panel temperature corresponding according to each humidity province, and the different liquid crystal panel temperature of setting and the second corresponding relation between the modified value of overdriving are exported the modified value of overdriving corresponding to each humidity province to liquid crystal panel.
2. over-driving method as claimed in claim 1, it is characterized in that, before or after the described Current Temperatures information of obtaining the liquid crystal panel desired location that temperature sensor gathers, also comprise step: read described the first corresponding relation from memory device, described the first corresponding relation is pre-stored information in memory device.
3. over-driving method as claimed in claim 1, it is characterized in that, before or after determining liquid crystal panel temperature corresponding to each humidity province, also comprise step: read described the second corresponding relation from memory device, described the second corresponding relation is pre-stored information in memory device.
4. an over-driving device is characterized in that, comprising:
Acquiring unit is used for obtaining the Current Temperatures information of the liquid crystal panel desired location that temperature sensor gathers;
Control module is used for according to described Current Temperatures information, and the first corresponding relation between liquid crystal panel temperature corresponding to each humidity province of different temperature informations and liquid crystal panel of setting, determines the liquid crystal panel temperature that each humidity province is corresponding; The liquid crystal panel temperature corresponding according to each humidity province, and different liquid crystal panel temperature and the second corresponding relation between the modified value of overdriving are exported the modified value of overdriving corresponding to each humidity province to liquid crystal panel.
5. an overdrive system is characterized in that, comprising:
Liquid crystal panel;
Temperature sensor is positioned at the desired location of described liquid crystal panel, is used for gathering the Current Temperatures information of described liquid crystal panel desired location;
Opertaing device, respectively with described liquid crystal panel be connected temperature sensor signal and be connected, be used for according to described Current Temperatures information, and the first corresponding relation between liquid crystal panel temperature corresponding to each humidity province of different temperature informations and liquid crystal panel of setting, determine the liquid crystal panel temperature that each humidity province is corresponding; The liquid crystal panel temperature corresponding according to each humidity province, and the different liquid crystal panel temperature of setting and the second corresponding relation between the modified value of overdriving are exported the modified value of overdriving corresponding to each humidity province to liquid crystal panel.
6. overdrive system as claimed in claim 5 is characterized in that, described opertaing device comprises:
Storer, store the first corresponding relation between liquid crystal panel temperature corresponding to each humidity province of different temperature informations and liquid crystal panel, different liquid crystal panel temperature and the second corresponding relation between the modified value of overdriving, and different temperature informations corresponding liquid crystal panel temperature distributing rule and different liquid crystal panel temperature corresponding over-driving look-up table respectively respectively;
Processor is connected with memory signals, is used for obtaining the Current Temperatures information of the liquid crystal panel desired location that temperature sensor gathers; And according to described Current Temperatures information, and the first corresponding relation between liquid crystal panel temperature corresponding to each humidity province of different temperature informations and liquid crystal panel of setting, determine the liquid crystal panel temperature that each humidity province is corresponding; The liquid crystal panel temperature corresponding according to each humidity province, and different liquid crystal panel temperature and the second corresponding relation between the modified value of overdriving are exported the modified value of overdriving corresponding to each humidity province to liquid crystal panel.
7. overdrive system as claimed in claim 6 is characterized in that, described opertaing device is time schedule controller.
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| CN201210540655.9A CN103021363B (en) | 2012-12-13 | 2012-12-13 | Overdrive method, device and system |
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| CN105679265A (en) * | 2016-03-08 | 2016-06-15 | 京东方科技集团股份有限公司 | Panel compensation device and method |
| WO2020056840A1 (en) * | 2018-09-21 | 2020-03-26 | 重庆惠科金渝光电科技有限公司 | Display panel, method for establishing overdrive lookup table thereof, and readable storage medium |
| US10878779B2 (en) | 2018-09-21 | 2020-12-29 | Chongqing Hkc Optoelectronics Technology Co., Ltd. | Display panel, method of establishing overdrive lookup table for the display panel, and readable storage medium |
| CN113436566A (en) * | 2021-06-22 | 2021-09-24 | 上海中航光电子有限公司 | Display panel and driving method thereof |
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