CN201392641Y - Drive circuit for driving liquid crystal module group - Google Patents
Drive circuit for driving liquid crystal module group Download PDFInfo
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- CN201392641Y CN201392641Y CN200920130849U CN200920130849U CN201392641Y CN 201392641 Y CN201392641 Y CN 201392641Y CN 200920130849 U CN200920130849 U CN 200920130849U CN 200920130849 U CN200920130849 U CN 200920130849U CN 201392641 Y CN201392641 Y CN 201392641Y
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Abstract
The utility model is suitable for the fields of drive circuits, and provides a drive circuit for drying liquid crystal module group. The drive circuit comprises a programmable logic module, a backlight source drive module, a data drive module and a grid electrode drive module, wherein the backlight source drive module can adjust signal dynamic states and regulate the brightness of a backlight source according to backlight brightness output by the programmable logic module, the data drive module can drive the display panel to work according to the time sequence control signals output by the programmable logic module, the grid electrode drive module can control the conduction of the grade electrode liens of the display panel according to the time sequence control signals output by the programmable logic module. The drive circuit adopts the programmable logic module to do image movement judgment for the input display data and process the time sequence control signals, outputs backlight brightness adjusting signals to dynamically adjust the brightness of the backlight source, eliminates dynamic image trailing smear, and improves image quality.
Description
Technical field
The utility model belongs to the driving circuit field, relates in particular to a kind of driving circuit that is used for the liquid crystal module driving.
Background technology
Traditional circuit that is used for liquid crystal module is driven generally adopts the external special IC that can produce timing control signal, for the problem that solves dynamic menu image smear generally is by inserting a black/grey picture data reaching identical effect between two frame image datas, and this function is to be integrated in to form dedicated logic circuit in the data driver; This mode can not be controlled calculating to data, and eliminates the poor effect of dynamic menu image smear.
The utility model content
The purpose of this utility model is to provide a kind of can eliminate the dynamic image smear, promotes the driving circuit that liquid crystal module is driven of being used for of picture quality.
The utility model is achieved in that a kind of driving circuit that is used for the liquid crystal module driving, comprising:
Programmed logical module, its input end receives video data, according to the timing sequence generating timing control signal of described video data, and output backlight illumination conditioning signal;
The backlight driver module, its input end is connected to first output terminal of described programmed logical module, the output terminal of described backlight driver module connects backlight, dynamically adjusts the brightness of described backlight according to the backlight illumination conditioning signal of described programmed logical module output;
Data-driven module, its input end are connected to second output terminal of described programmed logical module, and the output terminal of described data-driven module connects display panel, and the timing control signal of exporting according to described programmed logical module drives described display panel work;
Grid electrode drive module, its input end is connected to the 3rd output terminal of described programmed logical module, the output terminal of described grid electrode drive module is connected to the gate line of described display panel, controls the conducting of described display panel gate line according to the timing control signal of described programmed logical module output.
In the utility model embodiment, programmed logical module further comprises:
Video data brightness calculation unit, its input end receive N frame video data, calculate the brightness value of described N frame video data according to preset program;
Brightness comparing unit, its input end are connected to the output terminal of described video data brightness calculation unit, the brightness value of the brightness value of N-1 frame video data and N frame video data is compared and export comparison result according to predetermined conditions;
Picture moves judging unit, and its input end is connected to the output terminal of described brightness comparing unit, judges whether described comparison result satisfies the picture mobile condition;
The backlight illumination control signal generating unit, its input end is connected to the output terminal that described picture moves judging unit, the output terminal of described backlight illumination control signal generating unit is connected to the input end of backlight driver module, when described comparison result satisfied the picture mobile condition, the backlight illumination conditioning signal that described backlight driver module produces between two frame video datas according to described backlight illumination control signal generating unit was dynamically adjusted the brightness of described backlight;
The timing control signal generation unit, its input end receives video data, also controls described data-driven module and described grid electrode drive module respectively according to the timing sequence generating timing control signal of described video data;
Described video data brightness calculation unit, described brightness comparing unit, described picture move the timing control signal control that judging unit is all produced by described timing control signal generation unit.
As an embodiment of the present utility model, described backlight illumination conditioning signal is a pulse-width signal.
As an embodiment of the present utility model, described programmed logical module is field programmable gate array, programmable logic device (PLD) or CPLD.
As an embodiment of the present utility model, described backlight is LED source or cold-cathode fluorescent lamp source.
The driving circuit that the utility model provides adopts programmed logical module that the video data of importing is carried out picture and moves judgement and timing control signal generation processing, output backlight illumination conditioning signal is dynamically adjusted the brightness of backlight, eliminate the dynamic image smear, promoted picture quality.
Description of drawings
Fig. 1 is a kind of modular structure figure that is used for the driving circuit of liquid crystal module driving that the utility model embodiment provides;
Fig. 2 is the modular structure figure of the programmed logical module that provides of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
The driving circuit that the utility model embodiment provides adopts programmed logical module that the video data of importing is carried out picture and moves judgement and timing control signal generation processing, output backlight illumination conditioning signal is dynamically adjusted the brightness of backlight, eliminate the dynamic image smear, promoted picture quality.
The driving circuit that the utility model embodiment provides is mainly used in liquid crystal module is driven, and its modular structure for convenience of explanation, only shows the part relevant with the utility model embodiment as shown in Figure 1, and details are as follows.
Liquid crystal module comprises backlight 2 and display panel 3, and is used for the driving circuit 1 that liquid crystal module drives is comprised: programmed logical module 10, backlight driver module 11, data-driven module 12 and grid electrode drive module 13; Wherein the input end of programmed logical module 10 receives video data 4, according to the timing sequence generating timing control signal of video data 4, and output backlight illumination conditioning signal; The input end of backlight driver module 11 is connected to first output terminal of programmed logical module 10, the output terminal of backlight driver module 11 connects backlight 2, dynamically adjusts the brightness of backlight 2 according to the backlight illumination conditioning signal of programmed logical module 10 outputs; The input end of data-driven module 12 is connected to second output terminal of programmed logical module 10, and the output terminal of data-driven module 12 connects display panel 3, according to timing control signal driving display panel 3 work of programmed logical module 10 outputs; The input end of grid electrode drive module 13 is connected to the 3rd output terminal of programmed logical module 10, the output terminal of grid electrode drive module 13 is connected to the gate line of display panel 3, controls the conducting of display panel 3 gate lines according to the timing control signal of programmed logical module 10 outputs.
As an embodiment of the present utility model, programmed logical module 10 can be field programmable gate array (Field-Programmable Gate Array, FPGA), also can be programmable logic device (PLD) (Programmable Logic Device, PLD), can also for CPLD (ComplexProgrammable Logic Device, CPLD).Programmed logical module 10 can provide multiple capacity logic, carries out different data programings and produces multiple different circuit function.
In the utility model embodiment, for different video data sequential, only the change that need do on the software can meet the demands, and need not do the change on the hardware; 10 pairs of different video datas 4 of programmed logical module are handled, and the video data after will handling and sequential give data-driven module 12 and grid electrode drive module 13, drive display panel 3 normal show images; Programmed logical module 10 is calculated the brightness value of N frame video data according to preset program simultaneously, according to predetermined conditions the brightness value of N-1 frame video data and the brightness value of N frame video data are compared again, judge whether comparison result satisfies the picture mobile condition; When comparison result satisfied the picture mobile condition, backlight driver module 11 was dynamically adjusted the brightness of backlight according to the backlight illumination conditioning signal; Thereby reach the increase of visual effect frame number, feel more level and smooth exquisiteness, eliminated smear, promoted picture quality so that human eye vision shows dynamic image.
In the utility model embodiment, the modular structure of programmed logical module 10 for convenience of explanation, only shows the part relevant with the utility model as shown in Figure 2, and details are as follows.
Programmed logical module 10 comprises: video data brightness calculation unit 101, timing control signal generation unit 102, brightness comparing unit 103, picture move judging unit 104 and backlight illumination control signal generating unit 105, wherein the input end of video data brightness calculation unit 101 receives N frame video data, calculates the brightness value of N frame video data according to preset program; The input end of brightness comparing unit 103 is connected to the output terminal of video data brightness calculation unit 101, the brightness value of the brightness value of N-1 frame video data and N frame video data is compared and exports comparison result according to predetermined conditions; The input end that picture moves judging unit 104 is connected to the output terminal of brightness comparing unit 103, judges whether above-mentioned comparison result satisfies the picture mobile condition; The input end of backlight illumination control signal generating unit 105 is connected to the output terminal that picture moves judging unit 104, the output terminal of backlight illumination control signal generating unit 105 is connected to the input end of backlight driver module 11, when comparison result satisfied the picture mobile condition, the backlight illumination conditioning signal that backlight driver module 11 produces between two frame video datas according to backlight illumination control signal generating unit 105 was dynamically adjusted the brightness of backlight 2; The input end of timing control signal generation unit 102 receives video data 4, according to timing sequence generating timing control signal and the difference control data driver module 12 and the grid electrode drive module 13 of video data; Video data brightness calculation unit 101, brightness comparing unit 103, picture move the timing control signal control that judging unit 104 is all produced by timing control signal generation unit 102.
Wherein, the backlight illumination conditioning signal can be width modulation (Pulse Width Modulation, PWM) signal.
In the utility model embodiment, backlight 2 can for light emitting diode (Light Emitting Diode, LED) light source, also can for the cold-cathode fluorescence lamp light source (Cold Cathode Fluorescent Lamp, CCFL).Backlight 2 is driven by backlight driver module 11, and backlight driver module 11 provides operate as normal needed voltage can for backlight 2, electrical parameters such as electric current.
In the utility model embodiment, calculate the brightness value of N frame video data according to preset program by video data brightness calculation unit 101; Brightness comparing unit 103 is compared the brightness value of the brightness value of N-1 frame video data and N frame video data according to predetermined conditions and is exported comparison result; Picture moves judging unit 104 and judges whether above-mentioned comparison result satisfies the picture mobile condition; When comparison result satisfied the picture mobile condition, the backlight illumination conditioning signal that backlight driver module 11 produces between two frame video datas according to backlight illumination control signal generating unit 105 was dynamically adjusted the brightness of backlight 2; Thereby reduced the brightness of backlight 2, reached the increase of visual effect frame number and the constant purpose of visual brightness, human eye vision has been shown dynamic image feel more level and smooth exquisiteness.
The driving circuit that the utility model embodiment provides adopts programmed logical module that the video data of importing is carried out picture and moves judgement and timing control signal generation processing, output backlight illumination conditioning signal is dynamically adjusted the brightness of backlight, eliminate the dynamic image smear, promoted picture quality.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (5)
1, a kind of driving circuit that is used for the liquid crystal module driving is characterized in that described driving circuit comprises:
Programmed logical module, its input end receives video data, according to the timing sequence generating timing control signal of described video data, and output backlight illumination conditioning signal;
The backlight driver module, its input end is connected to first output terminal of described programmed logical module, the output terminal of described backlight driver module connects backlight, dynamically adjusts the brightness of described backlight according to the backlight illumination conditioning signal of described programmed logical module output;
Data-driven module, its input end are connected to second output terminal of described programmed logical module, and the output terminal of described data-driven module connects display panel, and the timing control signal of exporting according to described programmed logical module drives described display panel work;
Grid electrode drive module, its input end is connected to the 3rd output terminal of described programmed logical module, the output terminal of described grid electrode drive module is connected to the gate line of described display panel, controls the conducting of described display panel gate line according to the timing control signal of described programmed logical module output.
2, driving circuit as claimed in claim 1 is characterized in that, described programmed logical module further comprises:
Video data brightness calculation unit, its input end receive N frame video data, calculate the brightness value of described N frame video data according to preset program;
Brightness comparing unit, its input end are connected to the output terminal of described video data brightness calculation unit, the brightness value of the brightness value of N-1 frame video data and N frame video data is compared and export comparison result according to predetermined conditions;
Picture moves judging unit, and its input end is connected to the output terminal of described brightness comparing unit, judges whether described comparison result satisfies the picture mobile condition;
The backlight illumination control signal generating unit, its input end is connected to the output terminal that described picture moves judging unit, the output terminal of described backlight illumination control signal generating unit is connected to the input end of backlight driver module, when described comparison result satisfied the picture mobile condition, the backlight illumination conditioning signal that described backlight driver module produces between two frame video datas according to described backlight illumination control signal generating unit was dynamically adjusted the brightness of described backlight;
The timing control signal generation unit, its input end receives video data, also controls described data-driven module and described grid electrode drive module respectively according to the timing sequence generating timing control signal of described video data;
Described video data brightness calculation unit, described brightness comparing unit, described picture move the timing control signal control that judging unit is all produced by described timing control signal generation unit.
3, driving circuit as claimed in claim 2 is characterized in that, described backlight illumination conditioning signal is a pulse-width signal.
4, driving circuit as claimed in claim 1 is characterized in that, described programmed logical module is field programmable gate array, programmable logic device (PLD) or CPLD.
5, driving circuit as claimed in claim 1 is characterized in that, described backlight is LED source or cold-cathode fluorescent lamp source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920130849U CN201392641Y (en) | 2009-04-17 | 2009-04-17 | Drive circuit for driving liquid crystal module group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920130849U CN201392641Y (en) | 2009-04-17 | 2009-04-17 | Drive circuit for driving liquid crystal module group |
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| Publication Number | Publication Date |
|---|---|
| CN201392641Y true CN201392641Y (en) | 2010-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200920130849U Expired - Lifetime CN201392641Y (en) | 2009-04-17 | 2009-04-17 | Drive circuit for driving liquid crystal module group |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110379386A (en) * | 2019-06-11 | 2019-10-25 | 惠科股份有限公司 | Display panel and display |
| CN115394267A (en) * | 2022-09-23 | 2022-11-25 | 北京显芯科技有限公司 | Display system |
-
2009
- 2009-04-17 CN CN200920130849U patent/CN201392641Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110379386A (en) * | 2019-06-11 | 2019-10-25 | 惠科股份有限公司 | Display panel and display |
| CN110379386B (en) * | 2019-06-11 | 2021-10-01 | 惠科股份有限公司 | Display panel and display |
| CN115394267A (en) * | 2022-09-23 | 2022-11-25 | 北京显芯科技有限公司 | Display system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100127 |