CN101923836B - Display device and brightness control method thereof - Google Patents
Display device and brightness control method thereof Download PDFInfo
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- CN101923836B CN101923836B CN2009101490045A CN200910149004A CN101923836B CN 101923836 B CN101923836 B CN 101923836B CN 2009101490045 A CN2009101490045 A CN 2009101490045A CN 200910149004 A CN200910149004 A CN 200910149004A CN 101923836 B CN101923836 B CN 101923836B
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Abstract
The invention provides a display device, comprising N liquid crystal units, a clock generator and a control module; wherein the control module is electrically connected with the clock generator and N liquid crystal units. The clock generator can generate N triggering signals and M blanking signals in a picture period; wherein M and N are natural numbers. When the control module receives one of N triggering signals, the control module selectively inputs a first black frame inserting signal into one of N liquid crystal units. Besides, when the control module receives one of M blanking signals, the control module inputs a second black frame inserting signal into one of N liquid crystal units. The first black frame inserting signal is different from the second black frame inserting signal. The invention also provides a brightness control method. The display device and brightness control method of the invention can overcome the problem that brightness is uneven owning to the black frame inserting technology.
Description
Technical field
The present invention relates to a kind of display device and luminance regulating method, and especially, the present invention relates to a kind of display device and luminance regulating method that can improve the brightness disproportionation problem that black insertion technology causes.
Background technology
(Liquid Crystal Display, (Cathode Ray Tube CRT) becomes the main flow display to LCD LCD) to replace the conventional cathode ray tube display gradually.The displaying principle of LCD is to utilize the deflection angle of Control of Voltage liquid crystal molecule, sees through different deflection angles when causing light that backlight sends through liquid crystal molecule and produces different GTGs.
Except the principle of luminosity difference, the type of drive of LCD and cathode-ray tube display is also inequality.Conventional cathode ray tube belongs to pulsed (impulse type) driving method, and LCD then belongs to freeze mode (hold type) driving method.Because driving method is different, when playing dynamic image, LCD can more be easy to generate the phenomenon of dynamic ghost (motion blur) than cathode-ray tube display.
In the prior art, analog pulse drives the dynamic ghost problem that (Simulated Pulse Driving) method is commonly used to solve LCD.Please with reference to Fig. 1, Fig. 1 illustrates the synoptic diagram of the analog pulse driving method of prior art.As shown in Figure 1, transverse axis is that the time t and the longitudinal axis are the voltage V of the source electrode input of drive IC.When not using the analog pulse driving method, source drive signal 1 is kept a voltage with very first time T1, and also promptly, the source electrode of drive IC is input voltage in very first time T1.On the other hand, when using the analog pulse driving method, source electrode is imported second time T 2 in, and excess time, T3 then imported black data, and therefore, picture data input time of reality is second time T 2 only.Because more near the employed pulsed drive method of cathode-ray tube (CRT), so this method can effectively be improved the dynamic image quality to avoid the situation of dynamic ghost to the method compared to the driving method of original LCD.
Yet the analog pulse driving method can cause the uneven problem of liquid crystal panel lightness.Please with reference to Fig. 2, Fig. 2 illustrates the synoptic diagram of the display panels of prior art.As shown in Figure 2, comprise sweep trace G1～G480 series arrangement on the display panels 2 on panel.Note that for for purpose of brevity graphic, Fig. 2 only illustrates several sweep traces and represents all sweep traces, each sweep trace is identical substantially with distance between the neighbor scanning line.But picture data self-scanning line G1 is scanned up to sweep trace G480 in regular turn, and when data-signal is scanned up to sweep trace G360, but black frame insertion signals self-scanning line G1 begins scanning.
In the prior art, display panels 2 also is provided with blanking zone, also is the zone of G481～G525 representative of Fig. 2.Data-signal can get into blanking zone after being scanned up to sweep trace G480, and self-scanning line G481 is scanned up in regular turn and returns sweep trace G1 behind the sweep trace G525 and rescan.Because blanking zone is not the viewing area on the entity; Therefore when being scanned up to blanking zone; The conversion that drive IC is not carried out polarity and data (also is; Stop input data signal), so drive IC can have the long duration of charging and bigger thrust is imported black frame insertion signals, it will cause this zone of human eye perceives (G122～G163) more black than other zone.
In sum, though the analog pulse method can be improved the ghost phenomena of LCD, yet the method has also caused the shortcoming of whole picture brightness disproportionation.
Summary of the invention
Therefore, one aspect of the present invention is to provide a kind of display device, can improve the uneven problem of picture brightness that is caused because of the analog pulse driving method.
According to a specific embodiment, display device of the present invention comprises N liquid crystal cells, clock generator (clock generator) and control module, and wherein, control module is electrically connected each liquid crystal cells and clock generator.Clock generator can produce N trigger pip and M blanking signal (blanking signal) in a picture cycle (frameperiod), wherein, M and N are natural number.
In this specific embodiment, control module can receive N trigger pip, and when it received one of them of N trigger pip, control module was optionally imported one of them of first black frame insertion signals (black signal) to N liquid crystal cells.In addition, control module also can receive M blanking signal, and when it received one of them of M blanking signal, control module can be imported one of them of second black frame insertion signals to N liquid crystal display.Note that first black frame insertion signals and second black frame insertion signals are different.
According to display device of the present invention, wherein, first black frame insertion signals comprises the grid voltage and first source voltage, and second black frame insertion signals comprises the grid voltage and second source voltage, and this control module comprises: source electrode drive circuit is electrically connected to N liquid crystal cells; Gate driver circuit is electrically connected to N liquid crystal cells; And time schedule controller; Be electrically connected to clock generator, source electrode drive circuit and gate driver circuit; When receiving trigger pip; Control gate driver circuit selectivity output grid voltage is controlled source electrode drive circuit simultaneously and is imported first source voltage to liquid crystal cells to N one of them liquid crystal cells of liquid crystal cells; Wherein, when time schedule controller received blanking signal, control gate driver circuit output grid voltage was controlled source electrode drive circuit simultaneously and is imported second source voltage to liquid crystal cells to N one of them liquid crystal cells of liquid crystal cells.
According to display device of the present invention, wherein, second source voltage is less than first source voltage.
According to display device of the present invention, wherein, corresponding first output time of the grid voltage of first black frame insertion signals, corresponding second output time of the grid voltage of second black frame insertion signals, second output time is less than first output time.
According to display device of the present invention, wherein, when time schedule controller receives trigger pip; Generation has first output enable signal of the first activation time, and gate driver circuit continues the output grid voltage according to the first activation time with first output time; When time schedule controller receives blanking signal; Generation has second output enable signal of the second activation time, and gate driver circuit continues the output grid voltage according to the second activation time with second output time.
According to display device of the present invention; Wherein, Corresponding first output time of the grid voltage of first black frame insertion signals, corresponding second output time of the grid voltage of second black frame insertion signals, the value that first output time multiply by first source voltage is equal to the value that second output time multiply by second source voltage.
According to display device of the present invention, wherein, when control module received trigger pip, input data signal when control module receives blanking signal, stopped input data signal to N one of them liquid crystal cells of liquid crystal cells.
Another aspect of the present invention is to provide a kind of luminance regulating method, can be in order to solve the uneven problem of picture brightness that LCD is caused because of the analog pulse driving method.
According to a specific embodiment, luminance regulating method of the present invention can be applicable to display device, and this display device can comprise N liquid crystal cells, clock generator and control module, and wherein, control module is electrically connected each liquid crystal cells and clock generator.Clock generator can produce N trigger pip and M blanking signal in a picture cycle, wherein, M and N are natural number.
In this specific embodiment, luminance regulating method can comprise the following step: control module receives one of them of N trigger pip, and optionally imports first black frame insertion signals to N liquid crystal cells one of them according to this trigger pip; And control module receives one of them of M blanking signal, and imports second black frame insertion signals to N LCD one of them according to this blanking signal.Wherein, first black frame insertion signals and second black frame insertion signals are different.
According to luminance regulating method of the present invention; Wherein, Control module comprises source electrode drive circuit, gate driver circuit and time schedule controller, and source electrode drive circuit and gate driver circuit all are electrically connected to N liquid crystal cells, and time schedule controller is electrically connected to clock generator, source electrode drive circuit and gate driver circuit; First black frame insertion signals comprises the grid voltage and first source voltage; Second black frame insertion signals comprises the grid voltage and second source voltage, in the step that receives trigger pip, comprises the following step: time schedule controller receives trigger pip; Control gate driver circuit selectivity output grid voltage is controlled source electrode drive circuit simultaneously and is imported first source voltage to liquid crystal cells to N one of them liquid crystal cells of liquid crystal cells; In the step that receives blanking signal; Comprise the following step: time schedule controller receives blanking signal; Control gate driver circuit output grid voltage is controlled source electrode drive circuit simultaneously and is imported second source voltage to liquid crystal cells to N one of them liquid crystal cells of liquid crystal cells.
According to luminance regulating method of the present invention, wherein, second source voltage is less than first source voltage.
According to luminance regulating method of the present invention, wherein, corresponding first output time of the grid voltage of first black frame insertion signals, corresponding second output time of the grid voltage of second black frame insertion signals, second output time is less than first output time.
According to luminance regulating method of the present invention, wherein, in the step that receives trigger pip, further comprise the following step: time schedule controller receives trigger pip, produces first output enable signal with first activation time; And gate driver circuit continues the output grid voltage according to the first activation time with first output time; In the step that receives blanking signal, further comprise the following step: time schedule controller receives blanking signal, produces second output enable signal with second activation time; And gate driver circuit continues the output grid voltage according to the second activation time with second output time.
According to luminance regulating method of the present invention; Wherein, Corresponding first output time of the grid voltage of first black frame insertion signals; Corresponding second output time of the grid voltage of second black frame insertion signals, the value that first output time multiply by first source voltage is equal to the value that second output time multiply by second source voltage.
According to luminance regulating method of the present invention, wherein, in the step that receives trigger pip, further comprise the following step: control module receives trigger pip, and input data signal is to N one of them liquid crystal cells of liquid crystal cells; In the step that receives blanking signal, further comprise the following step: control module receives blanking signal, stops input data signal.
Can further be understood through following detailed Description Of The Invention and accompanying drawing about advantage of the present invention and spirit.
Description of drawings
Fig. 1 illustrates the synoptic diagram of the analog pulse driving method of prior art.
Fig. 2 illustrates the synoptic diagram of the display panels of prior art.
Fig. 3 A illustrates the functional block diagram according to the display device of a specific embodiment of the present invention.
Fig. 3 B illustrates the schematic appearance of the display device of Fig. 3 A.
Fig. 3 C illustrates the detailed maps of the display device of Fig. 3 A.
Fig. 4 illustrates the flow chart of steps according to the luminance regulating method of a specific embodiment of the present invention.
Fig. 5 illustrates the flow chart of steps according to the luminance regulating method of another specific embodiment of the present invention.
Embodiment
Please in the lump with reference to Fig. 3 A and Fig. 3 B, Fig. 3 A illustrates the functional block diagram according to the display device 3 of a specific embodiment of the present invention, and Fig. 3 B then illustrates the schematic appearance of the display device 3 of Fig. 3 A.Shown in Fig. 3 A, display device 3 comprises N liquid crystal cells 30, clock generator 32 and control module 34, and wherein, control module 34 can be electrically connected to clock generator 32 and each liquid crystal cells 30.
In this specific embodiment, clock generator 32 can produce N trigger pip and M blanking signal in regular turn in a picture cycle, and wherein, M and N are natural numbers.Note that in practice M and N can decide according to user or deviser's demand, are not limited to the cited specific embodiment of this instructions.For example, N can be set at 480, and M can be set at 45; Therefore; The display of being designed with this parameter has 480 sweep traces, and the 481st to 525 sweep traces are blanking zone, please notes; Blanking zone is not the entity viewing area of display device 3 in the practice, but the virtual region that is provided with in order to meet the demand in the design.Shown in Fig. 3 B, display device 3 has sweep trace G1 '～G480 ' and G481 '～G525 ', and wherein sweep trace G1 '～G480 ' is that viewing area and sweep trace G481 '～G525 ' are blanking zone.Control module 34 can scan the viewing area with data-signal according to each trigger pip that clock generator 32 is produced, and also promptly, but display device 3 self-scanning line G1 ' are scanned up to G480 '.And, simultaneously, when control module 34 receives blanking signal, stop input data signal.N liquid crystal cells 30 can be distinguished each sweep trace of corresponding viewing area, and in other words, display device 3 program that scans each sweep trace G1 '～G480 ' in regular turn is the deflection of controlling the liquid crystal molecule (not being shown among the figure) that each liquid crystal cells 30 comprised in regular turn in practice.Note that for drawing for purpose of brevity, Fig. 3 B only illustrates several sweep traces and represents all sweep traces.
In order to improve the ghost phenomena of display device 3, can set when display device 3 is scanned up to the 360th sweep trace (being G360 ') with data-signal, begin to scan from the 1st (G1 ') sweep trace with black frame insertion signals.The time point that above-mentioned black frame insertion signals begins to scan can be decided according to user or deviser's demand, and for example, the deviser can design and when data-signal is scanned up to the 240th sweep trace, carry out black frame insertion signals scanning.
In this specific embodiment, picture cycle refers to that clock generator 32 produces N trigger pip and M the time that blanking signal spent, and a picture cycle can demonstrate a frame picture (frame).Please with reference to Fig. 3 C, Fig. 3 C illustrates the detailed maps of the display device 3 of Fig. 3 A.Shown in Fig. 3 C, control module 34 can further comprise source electrode drive circuit (source driving circuit) 340, gate driver circuit (gate driving circuit) 342 and time schedule controller (timing controller) 344.32 trigger pips that produce in regular turn of clock generator and blanking signal can be received by control module 34; When control module 34 receives trigger pip, time schedule controller 344 can control that gate driver circuit 342 selects liquid crystal cells 30 according to trigger pip one of them import with grid voltage.
According to a specific embodiment; If clock generator 32 produces first trigger pip in a picture cycle; Then time schedule controller 344 is imported grid voltage according to this first trigger pip control gate driver circuit 342 to first liquid crystal cells 30 (in this specific embodiment, first liquid crystal cells 30 corresponds to sweep trace G1 ').In other words, when first liquid crystal cells 30 received grid voltage, the transistor of liquid crystal cells promptly was in opening.In addition, time schedule controller 344 also can be imported first source signal to liquid crystal cells according to first trigger pip control source electrode drive circuit 340 simultaneously.The above-mentioned grid voltage and first source voltage can constitute first black frame insertion signals in this specific embodiment.
In addition; In this specific embodiment; When time schedule controller 344 received the blanking signal that clock generator 32 produced, time schedule controller 344 may command gate driver circuits 342 were to one of them liquid crystal cells 30 input grid voltage, and may command source electrode drive circuit 340 is to this liquid crystal cells 30 inputs second source voltage simultaneously; In practice, the grid voltage and second source voltage can constitute second black frame insertion signals.
In sum, when the clock generator produced trigger pip, time schedule controller may command source electrode drive circuit and gate driver circuit produced and import one of them of first black frame insertion signals to liquid crystal cells.In addition, when the clock generator produced blanking signal, time schedule controller may command source electrode drive circuit and gate driver circuit produced and import one of them of second black frame insertion signals to liquid crystal cells, and wherein, first black frame insertion signals is different from second black frame insertion signals.For example, when display device was scanned up to the 360th sweep trace in the viewing area with data-signal, control module was imported first black frame insertion signals again and is scanned downwards with first black frame insertion signals from first sweep trace.And when the clock generator produced blanking signal, control module replaced first black frame insertion signals with second black frame insertion signals and continues scanning.When the clock generator produces last blanking signal and produces trigger pip in regular turn once more and when display device was rescaned, control module replaced second black frame insertion signals with first black frame insertion signals and continues scanning.
Because drive IC is not carried out the conversion of polarity or data when clock generator produces blanking signal; Therefore produce in the section of blanking signal at clock generator, more when producing trigger pip than clock generator in order to duration of charging that black frame insertion signals is provided and thrust.With this specific embodiment, if only with a kind of black frame insertion signals, for example, first black frame insertion signals carries out black plug, and then the zone between the 122nd to the 163rd sweep trace can have darker color.Yet this specific embodiment replaces first black frame insertion signals in this interval with second black frame insertion signals, can solve the problem of display device brightness disproportionation.
According to a specific embodiment; Second source voltage that is comprised in second black frame insertion signals is less than first source voltage that is comprised in first black frame insertion signals; Therefore; Produce in the section of blanking signal at clock generator, drive IC is unlikely to provide too much duration of charging and thrust to cause display device top section to have darker color (also promptly, brightness is lower) to black frame insertion signals.Note that the ratio of second source voltage and first source voltage can be decided according to user or deviser's demand in practice, generally speaking, its design reaches naked eyes and can not differentiate the brightness disproportionation phenomenon of whole display device substantially and get final product.
A last specific embodiment is directly controlled the black level of black frame insertion signals with source voltage, yet according to another specific embodiment, the output time of control module may command first black frame insertion signals and second black frame insertion signals (output period) is adjusted its brightness.In this specific embodiment; Corresponding first output time of the grid voltage that first black frame insertion signals is comprised; In other words; When control module was exported first black frame insertion signals, time schedule controller produced first output enable (output enable) signal with the first activation time (enable period) according to trigger pip, and gate driver circuit then can continue the output grid voltage according to the first activation time in first output time.In addition, corresponding second output time of the grid voltage that comprised of second black frame insertion signals.Second output time is less than first output time.Therefore, produce in the section of blanking signal at clock generator, though drive IC provides more duration of charging and thrust to second black frame insertion signals, yet the second black frame insertion signals duration is short than first black frame insertion signals, and the black plug effect that both integral body cause is close.Likewise, the ratio of second output time and first output time can be decided according to user or deviser's demand in practice, and generally speaking, its design reaches naked eyes and can not differentiate the brightness disproportionation phenomenon of whole display device substantially and get final product.
In the practice; The brightness of first black frame insertion signals and second black frame insertion signals receives the influence of source voltage and input time simultaneously; Therefore; According to another specific embodiment, first source voltage of control module may command first black frame insertion signals multiply by second source voltage that product value that the first corresponding output time of its grid voltage obtained is equal to second black frame insertion signals substantially and multiply by the product value that the second corresponding output time of its grid voltage is obtained.The product value of the source voltage of above-mentioned first black frame insertion signals and second black frame insertion signals and grid voltage input time equates that substantially the brightness that causes both on display device, to be shown is identical substantially.
Please with reference to Fig. 4, Fig. 4 illustrates the flow chart of steps according to the luminance regulating method of a specific embodiment of the present invention.The luminance regulating method of this specific embodiment can be used for the display device of above-mentioned specific embodiment, and said as above-mentioned specific embodiment, display device can comprise N liquid crystal cells, clock generator and control module.Note that display device and inner each unit thereof all disclose in above-mentioned specific embodiment, thereby repeat no more here.
As shown in Figure 4, the luminance regulating method of this specific embodiment comprises the following step.In step S40, one of them of N the trigger pip that control module receive clock generator is produced, and optionally insert one of them of first black frame insertion signals to N liquid crystal cells according to the trigger pip that receives.In addition, in step S42, one of them of M the blanking signal that control module receive clock generator is produced, and import one of them of second black frame insertion signals to N liquid crystal cells according to the blanking signal that receives.Note that above-mentioned first black frame insertion signals and second black frame insertion signals are different.
Because clock generator produces N trigger pip and M blanking signal in regular turn, so the sequence of steps of this specific embodiment is connected in after the step S40 for step S42.In addition, clock generator can produce N trigger pip and M blanking signal once more in regular turn after producing M blanking signal, and also promptly, N trigger pip of generation and M blanking signal cause display device to show the next frame picture in next picture cycle.As stated, according to another specific embodiment, the step S40 of luminance regulating method of the present invention and step S42 can hocket and with lasting picture brightness adjusted.
In the luminance regulating method of this specific embodiment; The source voltage of control module may command first black frame insertion signals and second black frame insertion signals and grid voltage output time; Or controlling the product that both multiply each other equates substantially, to improve the uneven problem of picture brightness.About the control of black frame insertion signals when clock generator produces unlike signal (trigger pip or blanking signal), aforementioned specific embodiment fully discloses, thereby repeats no more here.
Please with reference to Fig. 5, Fig. 5 illustrates the flow chart of steps according to the luminance regulating method of another specific embodiment of the present invention.As shown in Figure 5, the luminance regulating method of this specific embodiment comprises step described as follows.In step S50, control module receives one of them of N trigger pip, also optionally inserts wherein another of first black frame insertion signals to N liquid crystal cells according to one of them of the trigger pip input data signal that is received to N liquid crystal cells.In step S52, control module receives one of them of M blanking signal, stops input data signal and imports one of them of second black frame insertion signals to N liquid crystal cells according to the blanking signal that is received.
In this specific embodiment, control module can input data signal to liquid crystal cells be with display frame in regular turn according to trigger pip that clock generator produced, and when one of them trigger pip produced, control module was imported first black frame insertion signals to liquid crystal cells.In addition, when clock generator produced blanking signal, control module had inputed to last liquid crystal cells and has stopped input data signal, and the while control module replaces first black frame insertion signals with second black frame insertion signals and inputs to liquid crystal cells.Different through second black frame insertion signals and first black frame insertion signals, display device can be adjusted the black level of black frame insertion signals of picture to improve the uneven problem of picture brightness.
Compared with prior art; Display device provided by the present invention and luminance regulating method are the black level of adjustment black frame insertion signals when drive IC is not carried out the conversion of polarity and data, to improve the uneven problem of the picture brightness that is caused because of the analog pulse driving method.Can adjust black frame insertion signals through adjustment source voltage, grid voltage input time or both product values, and then make the script drive IC import black its black level of zone adjustment of color that black frame insertion signals is caused to improve the problem of picture brightness inequality with more thrust and duration of charging.
Through above detailed description to preferred specific embodiment, hope can be known description characteristic of the present invention and spirit more, and is not to come scope of the present invention is limited with the above-mentioned preferred specific embodiment that is disclosed.On the contrary, its objective is that hope can be contained various changes and identity property is arranged in the scope of claim of the present invention.Therefore, the scope of claim of the present invention should be done the broadest explanation according to above-mentioned explanation, contains all possible change and identity property arrangement to cause it.
The primary clustering symbol description
1: source drive signal T1: the very first time
T2: second time T 3: excess time
V: voltage t: time
2: display panels G1～G480: sweep trace
G481～G525: sweep trace
3: display device 30: liquid crystal cells
32: clock generator 34: control module
G1 '～G525 ': sweep trace 340: source electrode drive circuit
342: gate driver circuit 344: time schedule controller
S40～S42: process step S50～S52: process step.
Claims (10)
1. display device comprises:
N liquid crystal cells;
Clock generator in a picture cycle, produces N trigger pip and M blanking signal in regular turn, and wherein M and N are all natural number; And
Control module is electrically connected to a said clock generator and a said N liquid crystal cells, when receiving one of them trigger pip of a said N trigger pip, optionally imports first black frame insertion signals to one of them liquid crystal cells of a said N liquid crystal cells;
Wherein, when said control module receives one of them blanking signal of a said M blanking signal, import second black frame insertion signals to one of them liquid crystal cells of a said N liquid crystal cells, said first black frame insertion signals is different from said second black frame insertion signals,
Wherein, said first black frame insertion signals comprises the grid voltage and first source voltage, and said second black frame insertion signals comprises the said grid voltage and second source voltage, and said control module comprises:
Source electrode drive circuit is electrically connected to a said N liquid crystal cells;
Gate driver circuit is electrically connected to a said N liquid crystal cells; And
Time schedule controller; Be electrically connected to said clock generator, said source electrode drive circuit and said gate driver circuit; When receiving said trigger pip; Control said gate driver circuit selectivity and export said grid voltage to one of them liquid crystal cells of a said N liquid crystal cells, control said source electrode drive circuit simultaneously and import said first source voltage to said liquid crystal cells;
Wherein, When said time schedule controller receives said blanking signal; Control said gate driver circuit and export said grid voltage to one of them liquid crystal cells of a said N liquid crystal cells, control said source electrode drive circuit simultaneously and import said second source voltage to said liquid crystal cells;
Wherein said second source voltage is less than said first source voltage.
2. display device according to claim 1; Wherein when said control module receives said trigger pip; Input data signal to one of them liquid crystal cells of a said N liquid crystal cells when said control module receives said blanking signal, stops to import said data-signal.
3. display device comprises:
N liquid crystal cells;
Clock generator in a picture cycle, produces N trigger pip and M blanking signal in regular turn, and wherein M and N are all natural number; And
Control module is electrically connected to a said clock generator and a said N liquid crystal cells, when receiving one of them trigger pip of a said N trigger pip, optionally imports first black frame insertion signals to one of them liquid crystal cells of a said N liquid crystal cells;
Wherein, when said control module receives one of them blanking signal of a said M blanking signal, import second black frame insertion signals to one of them liquid crystal cells of a said N liquid crystal cells, said first black frame insertion signals is different from said second black frame insertion signals,
Wherein, said first black frame insertion signals comprises the grid voltage and first source voltage, and said second black frame insertion signals comprises the said grid voltage and second source voltage, and said control module comprises:
Source electrode drive circuit is electrically connected to a said N liquid crystal cells;
Gate driver circuit is electrically connected to a said N liquid crystal cells; And
Time schedule controller; Be electrically connected to said clock generator, said source electrode drive circuit and said gate driver circuit; When receiving said trigger pip; Control said gate driver circuit selectivity and export said grid voltage to one of them liquid crystal cells of a said N liquid crystal cells, control said source electrode drive circuit simultaneously and import said first source voltage to said liquid crystal cells;
Wherein, When said time schedule controller receives said blanking signal; Control said gate driver circuit and export said grid voltage to one of them liquid crystal cells of a said N liquid crystal cells, control said source electrode drive circuit simultaneously and import said second source voltage to said liquid crystal cells;
Corresponding first output time of the said grid voltage of wherein said first black frame insertion signals, corresponding second output time of the said grid voltage of said second black frame insertion signals, said second output time is less than said first output time.
4. display device according to claim 3; Wherein when said time schedule controller receives said trigger pip; Generation has first output enable signal of the first activation time, and said gate driver circuit continues the said grid voltage of output according to the said first activation time with said first output time; When said time schedule controller receives said blanking signal; Generation has second output enable signal of the second activation time, and said gate driver circuit continues the said grid voltage of output according to the said second activation time with said second output time.
5. display device comprises:
N liquid crystal cells;
Clock generator in a picture cycle, produces N trigger pip and M blanking signal in regular turn, and wherein M and N are all natural number; And
Control module is electrically connected to a said clock generator and a said N liquid crystal cells, when receiving one of them trigger pip of a said N trigger pip, optionally imports first black frame insertion signals to one of them liquid crystal cells of a said N liquid crystal cells;
Wherein, when said control module receives one of them blanking signal of a said M blanking signal, import second black frame insertion signals to one of them liquid crystal cells of a said N liquid crystal cells, said first black frame insertion signals is different from said second black frame insertion signals,
Wherein, said first black frame insertion signals comprises the grid voltage and first source voltage, and said second black frame insertion signals comprises the said grid voltage and second source voltage, and said control module comprises:
Source electrode drive circuit is electrically connected to a said N liquid crystal cells;
Gate driver circuit is electrically connected to a said N liquid crystal cells; And
Time schedule controller; Be electrically connected to said clock generator, said source electrode drive circuit and said gate driver circuit; When receiving said trigger pip; Control said gate driver circuit selectivity and export said grid voltage to one of them liquid crystal cells of a said N liquid crystal cells, control said source electrode drive circuit simultaneously and import said first source voltage to said liquid crystal cells;
Wherein, When said time schedule controller receives said blanking signal; Control said gate driver circuit and export said grid voltage to one of them liquid crystal cells of a said N liquid crystal cells, control said source electrode drive circuit simultaneously and import said second source voltage to said liquid crystal cells;
Corresponding first output time of the said grid voltage of wherein said first black frame insertion signals; Corresponding second output time of the said grid voltage of said second black frame insertion signals, the value that said first output time multiply by said first source voltage is equal to the value that said second output time multiply by said second source voltage.
6. luminance regulating method; Be used for display device, said display device comprises N liquid crystal cells, clock generator and control module, and said control module is electrically connected to a said clock generator and a said N liquid crystal cells; Said clock generator is in a picture cycle; Produce N trigger pip and M blanking signal in regular turn, wherein M and N are all natural number, and said method comprises the following step:
Said control module receives one of them trigger pip of a said N trigger pip, optionally imports first black frame insertion signals to one of them liquid crystal cells of a said N liquid crystal cells; And
Said control module receives one of them blanking signal of a said M blanking signal, imports second black frame insertion signals to one of them liquid crystal cells of a said N liquid crystal cells, and said first black frame insertion signals is different from said second black frame insertion signals,
Wherein, Said control module comprises source electrode drive circuit, gate driver circuit and time schedule controller; Said source electrode drive circuit and said gate driver circuit all are electrically connected to a said N liquid crystal cells; Said time schedule controller is electrically connected to said clock generator, said source electrode drive circuit and said gate driver circuit, and said first black frame insertion signals comprises the grid voltage and first source voltage, and said second black frame insertion signals comprises the said grid voltage and second source voltage; In the step that receives said trigger pip, comprise the following step:
Said time schedule controller receives said trigger pip; Control said gate driver circuit selectivity and export said grid voltage to one of them liquid crystal cells of a said N liquid crystal cells, control said source electrode drive circuit simultaneously and import said first source voltage to said liquid crystal cells;
In the step that receives said blanking signal, comprise the following step:
Said time schedule controller receives said blanking signal; Control said gate driver circuit and export said grid voltage to one of them liquid crystal cells of a said N liquid crystal cells; Control said source electrode drive circuit simultaneously and import said second source voltage to said liquid crystal cells
Wherein said second source voltage is less than said first source voltage.
7. luminance regulating method according to claim 6 in the step that receives said trigger pip, further comprises the following step:
Said control module receives said trigger pip, input data signal to one of them liquid crystal cells of a said N liquid crystal cells;
In the step that receives said blanking signal, further comprise the following step:
Said control module receives said blanking signal, stops to import said data-signal.
8. luminance regulating method; Be used for display device, said display device comprises N liquid crystal cells, clock generator and control module, and said control module is electrically connected to a said clock generator and a said N liquid crystal cells; Said clock generator is in a picture cycle; Produce N trigger pip and M blanking signal in regular turn, wherein M and N are all natural number, and said method comprises the following step:
Said control module receives one of them trigger pip of a said N trigger pip, optionally imports first black frame insertion signals to one of them liquid crystal cells of a said N liquid crystal cells; And
Said control module receives one of them blanking signal of a said M blanking signal, imports second black frame insertion signals to one of them liquid crystal cells of a said N liquid crystal cells, and said first black frame insertion signals is different from said second black frame insertion signals,
Wherein, Said control module comprises source electrode drive circuit, gate driver circuit and time schedule controller; Said source electrode drive circuit and said gate driver circuit all are electrically connected to a said N liquid crystal cells; Said time schedule controller is electrically connected to said clock generator, said source electrode drive circuit and said gate driver circuit, and said first black frame insertion signals comprises the grid voltage and first source voltage, and said second black frame insertion signals comprises the said grid voltage and second source voltage; In the step that receives said trigger pip, comprise the following step:
Said time schedule controller receives said trigger pip; Control said gate driver circuit selectivity and export said grid voltage to one of them liquid crystal cells of a said N liquid crystal cells, control said source electrode drive circuit simultaneously and import said first source voltage to said liquid crystal cells;
In the step that receives said blanking signal, comprise the following step:
Said time schedule controller receives said blanking signal; Control said gate driver circuit and export said grid voltage to one of them liquid crystal cells of a said N liquid crystal cells; Control said source electrode drive circuit simultaneously and import said second source voltage to said liquid crystal cells
Corresponding first output time of the said grid voltage of wherein said first black frame insertion signals, corresponding second output time of the said grid voltage of said second black frame insertion signals, said second output time is less than said first output time.
9. luminance regulating method according to claim 8 in the step that receives said trigger pip, further comprises the following step:
Said time schedule controller receives said trigger pip, produces first output enable signal with first activation time; And
Said gate driver circuit continues the said grid voltage of output according to the said first activation time with said first output time;
In the step that receives said blanking signal, further comprise the following step:
Said time schedule controller receives said blanking signal, produces second output enable signal with second activation time; And
Said gate driver circuit continues the said grid voltage of output according to the said second activation time with said second output time.
10. luminance regulating method; Be used for display device, said display device comprises N liquid crystal cells, clock generator and control module, and said control module is electrically connected to a said clock generator and a said N liquid crystal cells; Said clock generator is in a picture cycle; Produce N trigger pip and M blanking signal in regular turn, wherein M and N are all natural number, and said method comprises the following step:
Said control module receives one of them trigger pip of a said N trigger pip, optionally imports first black frame insertion signals to one of them liquid crystal cells of a said N liquid crystal cells; And
Said control module receives one of them blanking signal of a said M blanking signal, imports second black frame insertion signals to one of them liquid crystal cells of a said N liquid crystal cells, and said first black frame insertion signals is different from said second black frame insertion signals,
Wherein, Said control module comprises source electrode drive circuit, gate driver circuit and time schedule controller; Said source electrode drive circuit and said gate driver circuit all are electrically connected to a said N liquid crystal cells; Said time schedule controller is electrically connected to said clock generator, said source electrode drive circuit and said gate driver circuit, and said first black frame insertion signals comprises the grid voltage and first source voltage, and said second black frame insertion signals comprises the said grid voltage and second source voltage; In the step that receives said trigger pip, comprise the following step:
Said time schedule controller receives said trigger pip; Control said gate driver circuit selectivity and export said grid voltage to one of them liquid crystal cells of a said N liquid crystal cells, control said source electrode drive circuit simultaneously and import said first source voltage to said liquid crystal cells;
In the step that receives said blanking signal, comprise the following step:
Said time schedule controller receives said blanking signal; Control said gate driver circuit and export said grid voltage to one of them liquid crystal cells of a said N liquid crystal cells; Control said source electrode drive circuit simultaneously and import said second source voltage to said liquid crystal cells
Corresponding first output time of the said grid voltage of wherein said first black frame insertion signals; Corresponding second output time of the said grid voltage of said second black frame insertion signals, the value that said first output time multiply by said first source voltage is equal to the value that said second output time multiply by said second source voltage.
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