CN101308631B - Driving element having time schedule controller and driving method thereof - Google Patents
Driving element having time schedule controller and driving method thereof Download PDFInfo
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Abstract
Disclosed is a drive method which is capable of reducing liquid crystal response time. The drive method, applicable on computer display units, includes the following steps: firstly, the previous original frame data and the current original frame data are supplied to a buffer; secondly, first and second previous adjusted frame data and first and second current adjusted frame data are outputted according to the previous original frame data and the current original frame data; thirdly, first current overdrive frame data are outputted to a source driver according to the first previous adjusted frame data and the first current adjusted frame data and with the reference to a table; after a fixed time, the first current overdrive frame data are again outputted to the source driver.
Description
Technical field
The present invention relates to a kind of time schedule controller, and be particularly related to a kind of time schedule controller that promotes the liquid crystal reaction time.
Background technology
In with the display of 60Hz as the frame update frequency, the time that each frame shows is about 16.67ms.In traditional LCD,, use 120Hz to come out as the LCD of frame update frequency in order to let the reaction time of liquid crystal molecule accelerate.Through improving the renewal frequency of frame, can improve in the LCD, to the charge frequency of the pixel electrode of each pixel cell, to accelerate the reaction time of liquid crystal molecule.In order further to accelerate the liquid crystal reaction velocity, the type of drive of overdriving has been applied to above-mentioned with in the LCD of 120Hz as the frame update frequency.
With reference to Figure 1A, it shows the relevant synoptic diagram of traditional two 60Hz frame data and a plurality of 120Hz frame data.Employing now will show that a 60Hz frame period T (n) of a 60Hz frame divides into two 120Hz frame period TS1 (n) and TS2 (n) describes as an example.The time schedule controller of LCD produces and in frame period TS1 (n) and TS2 (n), is presented at 120Hz frame data FD1 (n) and the FD2 (n) on the LCD respectively according to the receive 60Hz frame data D (n) that corresponds to certain pixel.120Hz frame data FD1 (n) and FD2 (n) before the driving method that use is overdrived are identical.
Traditional time schedule controller whenever promptly judges after the frame period at a distance from a 120Hz whether two adjacent 120Hz frame data equate, if not, then overdriving with 120Hz, (Over Drive, OD) data replace the 120Hz frame data.In Figure 1A, because 120Hz frame data FD1 (n) is different with FD2 (n-1), so time schedule controller will be overdrived frame data OD1 (n) replacement 120Hz frame data FD1 (n) to export source electrode driver to 120Hz.And because 120Hz frame data FD1 (n) is identical with FD2 (n), so time schedule controller can directly export 120Hz frame data FD2 (n) to source electrode driver.Yet, be that the LCD of 60Hz is compared with the renewal frequency of frame, when the renewal frequency of frame promotes to 120Hz, correspond to the time that the overdrive voltage of the frame data OD1 (n) that overdrives is maintained on the pixel electrode will shorten to 1/2nd.Thus, when the GTG value of two adjacent 120Hz frame data is widely different, pixel electrode will be too short because of the time that is maintained at overdrive voltage, and make the not anti-reflection of reaction time of liquid crystal molecule increase, and make that the display effect of display is not good.
With reference to Figure 1B, it shows out when the renewal frequency of frame promotes to 120Hz, also long GTG value zone when the liquid crystal molecule reaction time is 60Hz than the renewal frequency of frame in the LCD.In Figure 1B, the longitudinal axis and transverse axis are represented the GTG value of 60Hz frame data D (n-1) and the GTG value of 60Hz frame data D (n) respectively. Zone 102 and 104 is for when the renewal frequency of frame is 120Hz, and GTG value also long when the reaction time of liquid crystal molecule can be 60Hz than the renewal frequency of frame is regional.The result that the reaction time of liquid crystal molecule increases will make pixel can't reach due brightness, and reduce the display quality of picture.
Summary of the invention
In view of this, the object of the invention is exactly that a kind of driver element and driving method thereof with time schedule controller is being provided, and can solve the long problem of reaction time of the liquid crystal molecule of above-mentioned zone 102 and 104 effectively, to improve picture quality.
According to the object of the invention, a kind of driver element is proposed, be applied to display.Display comprises source electrode driver.Driver element comprises impact damper (Buffer) and time schedule controller (Timing Controller).Impact damper is in order to store previous original frame data and present original frame data; And according to the frame data after previous original frame data generation first previous adjustment the and the second previous back frame data of adjusting, and according to frame data after frame data and second are adjusted at present after the present original frame data generation first present adjustment.Time schedule controller comprises the first extremely drive data generation unit, second extremely drive data generation unit and the delay cell.The first extremely drive data generation unit is in order to receiving the first previous adjustment back frame data and first adjustment back frame data at present, and with reference to first form, overdrives at present to export first that (Over Drive, OD) frame data are to source electrode driver.The second extremely drive data generation unit is in order to receiving the second previous adjustment back frame data and second adjustment back frame data at present, and with reference to second form, to export second frame data of overdriving at present.Delay cell is in order to receive second frame data of overdriving; And overdrive at present after frame data postpone the set time second; Output second is overdrived frame data at present to source electrode driver, and the length of wherein said set time equals the frame period of the said first present adjustment back frame data in fact.
According to the object of the invention, another kind of driver element is proposed, be applied to display.Display comprises source electrode driver.Driver element comprises impact damper and time schedule controller.Impact damper is in order to store previous original frame data and present original frame data; And according to the frame data after previous original frame data generation first previous adjustment the and the second previous back frame data of adjusting, and according to frame data after frame data and second are adjusted at present after the present original frame data generation first present adjustment.Whether time schedule controller is arranged in the scope of preestablishing in order to the relation of judging previous original frame data and present original frame data.If; Then adjust the back frame data at present according to the first previous adjustment back frame data and first, reference table is overdrived frame data to source electrode driver at present to export first; And after the set time, export one time first frame data of overdriving at present again to source electrode driver.If not; Then adjust the back frame data at present according to the first previous adjustment back frame data and first; Reference table is overdrived frame data to source electrode driver at present to export first, and after the set time; Adjustment back frame data are to source electrode driver at present in output second, and the length of wherein said set time equals the frame period of the said first present adjustment back frame data in fact.
According to the object of the invention, another driver element is proposed, be applied to display.Display comprises source electrode driver.Driver element comprises impact damper and time schedule controller.Impact damper is in order to store previous original frame data and present original frame data; And according to the frame data after previous original frame data generation first previous adjustment the and the second previous back frame data of adjusting, and according to frame data after frame data and second are adjusted at present after the present original frame data generation first present adjustment.Time schedule controller comprises extremely drive data generation unit and delay cell.The extremely drive data generation unit is adjusted the back frame data at present in order to receive the first previous adjustment back frame data and first, and reference table, overdrives frame data at present to source electrode driver to export first.Delay cell is in order to receive first frame data of overdriving at present; And after the set time; Export first again and overdrive frame data at present to source electrode driver, the length of wherein said set time equals the frame period of the said first present adjustment back frame data in fact.
According to another object of the present invention, a kind of driving method that shortens the liquid crystal reaction time is proposed, this driving method is applied to display.Display comprises source electrode driver and driver element, and driver element comprises impact damper and time schedule controller.Time schedule controller comprises the first extremely drive data generation unit, second extremely drive data generation unit and the delay cell.This driving method comprises following step.At first, provide previous original frame data and present original frame data to impact damper.Then, according to previous original frame data and present original frame data, export the first previous adjustment back frame data and second adjustment back frame data before respectively, and first adjusts back frame data and second adjustment back frame data at present at present.Moreover, adjust the back frame data at present according to the first previous adjustment back frame data and first, and, overdrive frame data at present to source electrode driver to export first with reference to first form.Then, according to the second previous adjustment back frame data and second adjustment back frame data at present, and with reference to second form, to export second frame data of overdriving at present.Afterwards, overdrive at present after frame data postpone the set time second, the input source driver, the length of wherein said set time equaled for said first frame period of adjustment back frame data at present in fact.
According to another object of the present invention, a kind of driving method that shortens the liquid crystal reaction time is proposed, this driving method is applied in the display.Display comprises source electrode driver and driver element, and driver element comprises impact damper and time schedule controller.This driving method comprises following step.At first, provide previous original frame data and present original frame data to impact damper.Then, export the first previous adjustment back frame data and second adjustment back frame data before respectively according to previous original frame data and present original frame data, and first adjusts back frame data and second adjustment back frame data at present at present.Moreover whether the relation of judging previous original frame data and present original frame data is arranged in one preestablishes scope.Afterwards; When the relation of previous original frame data and present original frame data is arranged in when preestablishing scope, according to the first previous adjustment back frame data and first adjustment back frame data at present, and reference table; Frame data overdrive at present to source electrode driver to export first; And after the set time, export one time first frame data of overdriving at present again to source electrode driver, the length of wherein said set time equals the frame period of the said first present adjustment back frame data in fact.
According to another object of the present invention, a kind of driving method that shortens the liquid crystal reaction time is proposed, this driving method is applied to display.Display comprises source electrode driver and driver element, and driver element comprises impact damper and time schedule controller.This driving method comprises following step.At first, provide previous original frame data and present original frame data to impact damper.Then, export the first previous adjustment back frame data and second adjustment back frame data before respectively according to previous original frame data and present original frame data, and first adjusts back frame data and second adjustment back frame data at present at present.Afterwards; Adjust the back frame data at present according to the first previous adjustment back frame data and first; And reference table, overdrive frame data at present to source electrode driver to export first, and after the set time; Export first again and overdrive frame data at present to source electrode driver, the length of wherein said set time equals the frame period of the said first present adjustment back frame data in fact.
For letting above-mentioned purpose of the present invention, characteristic and the advantage can be more obviously understandable, hereinafter is special lifts preferred embodiment, and conjunction with figs. has been carried out following detailed description.
Description of drawings
Figure 1A shows the relevant synoptic diagram of traditional two 60Hz frame data and a plurality of 120Hz frame data;
Figure 1B shows out when the renewal frequency of frame promotes to 120Hz, and GTG value also long when the liquid crystal molecule reaction time, the conversation structure renewal frequency was 60Hz in the LCD is regional;
Fig. 2 A shows the circuit block diagram according to the LCD of the embodiment of the invention;
Fig. 2 B shows the detailed circuit diagram of the driver element 202 of Fig. 2 A;
Fig. 2 C shows the graph of a relation in frame period of each frame data of Fig. 2 B;
Fig. 3 shows the process flow diagram of driving method of the driver element 202 of Fig. 2 A;
Fig. 4 A shows the circuit diagram according to the LCD of second embodiment of the invention;
Fig. 4 B shows the detailed circuit diagram of the driver element 402 of Fig. 4 A;
Fig. 5 shows the process flow diagram of driving method of the driver element 402 of Fig. 4 A;
Fig. 6 A shows the circuit diagram according to the LCD of third embodiment of the invention;
Fig. 6 B shows the detailed circuit diagram of the driver element 602 of Fig. 6 A;
Fig. 6 C shows as received previous and present original frame data F (n) and F (n-1) and drops in the scope of preestablishing the synoptic diagram of the output frame data SO (n) of the driver element 602 of Fig. 6 A;
Fig. 6 D shows when received previous and present original frame data F (n) and F (n-1) drop on outside the scope of preestablishing, the synoptic diagram of the output frame data SO (n) of the driver element 602 of Fig. 6 A; And
Fig. 7 shows the process flow diagram of driving method of the driver element 602 of Fig. 6 A.
[main element symbol description]
D (n), D (n-1), FD1 (n), FD2 (n), FD1 (n-1), FD2 (n-1): frame data
T (n), T (n-1), TS1 (n), TS2 (n), TS1 (n-1), TS2 (n-1), T ' (n), T ' (n-1), TS1 ' (n), TS1 ' (n-1), TS2 ' (n), TS2 ' (n-1): the frame period
102～104: the zone
200,400,600: LCD
202,402,602: driver element
2021,4021,6021: time schedule controller
20211: the first extremely drive data generation units
20212: the second extremely drive data generation units
20213,40212: delay cell
2022,4022,6022: impact damper
2023,4023,6023: storer
204,404,604: source electrode driver
206,406,606: gate drivers
208,408,608: display panels
40211: the extremely drive data generation unit
SD1～SDn: data-signal
SC1～SCm: scan signal
SO (n): output frame data
F (n-1): previous original frame data
F (n): present original frame data
F1 (n-1): the first previous adjustment back frame signal
F2 (n-1): the second previous adjustment back frame signal
F1 (n): frame data after first adjustment at present
F2 (n): frame data after second adjustment at present
SOD1 (n): first frame data of overdriving at present
SOD2 (n): second frame data of overdriving at present
302～310,502～506,702～710: operation steps
Embodiment
When driver element of the present invention promotes in the renewal frequency of frame; Prolong the time that pixel electrode is maintained at overdrive voltage through exporting the one or more frame data of overdriving, influence the problem of pixel quality to solve pixel intensity deficiency in the conventional practice.
First embodiment
With reference to Fig. 2 A, it shows the circuit block diagram according to the LCD of the embodiment of the invention.LCD 200 comprises: driver element 202, source electrode driver 204, gate drivers 206 and display panels 208.Driver element 202 couples with source electrode driver 204, with output frame data SO (n) to source electrode driver 204.Source electrode driver 204 comes outputting data signals SD1～SDn driving liquid crystal panel 208 according to frame data SO (n).Gate drivers 206 also couples with driver element 202, and gate drivers 206 scans signal Sc1～Scm according to the clock signal (not shown) of driver element 202 with output and scans display panels 208.N and m are the integer greater than 1.
With reference to Fig. 2 B, it shows the detailed circuit diagram of the driver element 202 of Fig. 2 A.Driver element 202 comprises: impact damper 2022, time schedule controller 2021 and storer 2023.Wherein, time schedule controller 2021 comprises the first extremely drive data generation unit 20211, the second extremely drive data generation unit 20212 and delay cell 20213.And the output terminal of the first extremely drive data generation unit 20211 and delay cell 20213 couples each other, with output frame data SO (n).
The first extremely drive data generation unit 20211 is in order to receiving the first previous adjustment back frame data F1 (n-1) and first adjustment back frame data F1 (n) at present, and with reference to first form, to export first overdrive at present (Over Drive, OD) the frame data SOD1 (n).The first extremely drive data generation unit 20211 also first is overdrived frame data SOD1 (n) as output frame data SO (n), input source driver 204 with this at present.The second extremely drive data generation unit 20212 is in order to receiving the second previous adjustment back frame data F2 (n-1) and second adjustment back frame data F2 (n) at present, and with reference to second form, to export the second frame data SOD2 (n) that overdrives at present.Delay cell 20213 is in order to receive the second frame data SOD2 (n) that overdrives; And overdrive at present after frame data SOD2 (n) postpones the set time second; Second overdrive frame data SOD2 (n) at present with this as output frame data SO (n), input source driver 204.
With reference to Fig. 2 C, it shows the graph of a relation in frame period of each frame data of Fig. 2 B.In the present embodiment; Frame period previous and present original frame data F (n-1) and F (n) be respectively T ' (n-1) and T ' (n); Frame period of first and second previous adjustment back frame data F1 (n-1) and F2 (n-1) be respectively TS1 ' (n-1) and TS2 ' (n-1); And first and second at present frame period of adjustment back frame data F1 (n) and F2 (n) be respectively TS1 ' (n) and TS2 ' (n), and the length of above-mentioned set time equals frame period TS1 ' in fact (n).Frame period TS1 ' (n-1), TS2 ' (n-1), TS1 ' (n) and TS2 ' time span (n) preferably be equal to (n) half the of frame period T '.And the cycle of output frame data SO (n) also equals (n) half the of frame period T ' in fact, that is is that the frequency of output frame data SO (n) is the twice of present original frame data F (n).Yet present embodiment is not restricted to twice.
With reference to Fig. 3, it shows the process flow diagram of driving method of the driver element 202 of Fig. 2 A.At first, in step 302, provide previous original frame data F (n-1) and present original frame data F (n) to impact damper 2022.Then; In step 304; According to the frame data F1 (n-1) after previous original frame data F (n-1) the output first previous adjustment and the second previous adjustment back frame data F2 (n-1), and according to frame data F2 (n) after present original frame data F (n) the output first present adjustment back frame data F1 (n) and second adjustment at present.
Moreover; Like step 306; According to the first previous adjustment back frame data F1 (n-1) and first adjustment back frame data F1 (n) at present, and with reference to first form, to export the first frame data SOD1 (n) that overdrives at present; And first overdrive frame data SOD1 (n) at present as output frame data SO (n), input source driver 204 with this.Then, like step 308, according to the second previous adjustment back frame data F2 (n-1) and second adjustment back frame data F2 (n) at present, and with reference to second form, to export the second frame data SOD2 (n) that overdrives at present.Afterwards,, overdrive at present after frame data SOD2 (n) postpones the set time second, second overdrive frame data SOD2 (n) at present as output frame data SO (n), input source driver 204 with this like step 310.
When the driver element 202 of present embodiment is twice (for example being promoted by 60Hz is 120Hz) at the frequency upgrading with output frame data SO (n); Respectively frame period TS1 ' (n) and TS2 ' (n) in; As output frame data SO (n), export source electrode driver 204 with first and second overdrive at present frame data SOD1 (n) and SOD2 (n) to.Present embodiment is through letting pixel electrode be maintained to correspond to the time lengthening of overdrive voltage of output frame data SO (n); Can solve effectively in the conventional practice, the liquid crystal molecule reaction time of in the zone 102 and 104 of Figure 1B, being taken place is long and make the problem that pixel can't reach should have brightness.
Second embodiment
With reference to Fig. 4 A and Fig. 4 B, Fig. 4 A shows the circuit diagram according to the LCD of second embodiment of the invention, and Fig. 4 B shows the detailed circuit diagram of the driver element 402 of Fig. 4 A.Wherein second embodiment and the first embodiment difference are that the driver element 402 of second embodiment only comprises an extremely drive data generation unit 40211.
With reference to Fig. 5, it shows the process flow diagram of driving method of the driver element 402 of Fig. 4 A.At first, in step 502, provide previous original frame data F (n-1) and present original frame data F (n) to impact damper 4022.Then; In step 504, export the first previous adjustment back frame data F1 (n-1) and the second previous adjustment back frame data F2 (n-1) and first the adjustment back frame data F1 (n) and the second adjustment back frame data F2 (n) at present at present respectively according to previous original frame data F (n-1) and present original frame data F (n).
Afterwards; In step 506; According to the first previous adjustment back frame data F1 (n-1) and first adjustment back frame data F1 (n) at present, and reference table, to export the first frame data SOD1 (n) that overdrives at present; And first overdrive frame data SOD1 (n) at present as output frame data SO (n), input source driver 404 with this; And after the set time, export the one time first frame data SOD1 (n) that overdrives at present again, and first overdrive frame data SOD1 (n) at present as output frame data SO (n), input source driver 404 with this.
The driver element 402 of present embodiment each frame period TS ' (n) in, with first twice of frame data SOD1 (n) output of overdriving at present.So; Both having made the frequency upgrading with output frame data SO (n) is the twice of original frame data F (n); Present embodiment is through letting pixel electrode be maintained to correspond to the time lengthening of overdrive voltage of output frame data SO (n), and it is long and make the problem that pixel can't reach should have brightness likewise can to solve the liquid crystal molecule reaction time of in the zone 102 and 104 of Figure 1B, being taken place in the conventional practice effectively.
The 3rd embodiment
With reference to Fig. 6 A, 6B,, 6C and Fig. 6 D; Wherein Fig. 6 A shows the circuit diagram according to the LCD of third embodiment of the invention; Fig. 6 B shows the detailed circuit diagram of the driver element 602 of Fig. 6 A; Fig. 6 C and Fig. 6 D show respectively as received previous and present original frame data F (n) and F (n-1) and drop in the scope of preestablishing when dropping on outside the scope of preestablishing the synoptic diagram of the output frame data SO (n) of the driver element 602 of Fig. 6 A.Driver element 602 comprises impact damper 6022, time schedule controller 6021 and storer 6023.The present embodiment and the second embodiment difference are; Time schedule controller 6021 in the disclosed driver element 602 of present embodiment can judge whether the relation of previous original frame data and present original frame data F (n-1) and F (n) is arranged in one and preestablishes scope, and this preestablishes the preferably zone shown in Figure 1B 102 and 104 of scope.
When the relation of previous original frame data F (n-1) and present original frame data F (n) is arranged in this and preestablishes scope; Time schedule controller 6021 is adjusted back frame data F1 (n) at present according to the first previous adjustment back frame data F1 (n-1) and first; Reference table; Frame data SOD1 (n) overdrive at present also according to this as output frame data SO (n), input source driver 604 to export first.Time schedule controller 6021 and after the set time is exported the frame data SOD1 (n) and according to this as output frame data SO (n), input source driver 604 of overdriving at present for a time first again.That is, frame period TS1 ' (n) and TS2 ' (n) in, driver element 602 is all overdrived frame data SOD1 (n) as output frame data SO (n), input source driver 604 with first at present.
When the relation of previous original frame data F (n-1) and present original frame data F (n) is not arranged in this and preestablishes scope; Time schedule controller 6021 is also adjusted back frame data F1 (n) according to the first previous adjustment back frame data F1 (n-1) and first at present; Reference table; Exporting the first frame data SOD1 (n) that overdrives at present, and according to this as output frame data SO (n), input source driver 604.Time schedule controller 6021 and after the set time, output second is adjustment back frame data F2 (n) at present, and according to this as output frame data SO (n), input source driver 604.That is, frame period TS1 ' (n) and TS2 ' (n) in, driver element 602 respectively with first overdrive at present frame data SOD1 (n) and second at present adjustment back frame data F2 (n) as output frame data SO (n), input source driver 604.
With reference to Fig. 7, it shows the process flow diagram of driving method of the driver element 602 of Fig. 6 A.At first, in step 702, provide previous original frame data F (n-1) and present original frame data F (n) to impact damper 6022.Then; In step 704, export the first previous adjustment back frame data F1 (n-1) and the second previous adjustment back frame data F2 (n-1) and first the adjustment back frame data F1 (n) and the second adjustment back frame data F2 (n) at present at present respectively according to previous original frame data F (n-1) and present original frame data F (n).Moreover, in step 706, judge whether the relation of previous original frame data F (n-1) and present original frame data F (n) is arranged in the scope of preestablishing.Then; In step 708, when the relation of previous original frame data F (n-1) and present original frame data F (n) is arranged in when preestablishing scope, according to the first previous adjustment back frame data F1 (n-1) and first adjustment back frame data F1 (n) at present; And reference table; Be used as output frame data SO (n) to export the first frame data SOD1 (n) that overdrives at present, input source driver 604, and after the set time; Export the one time first frame data SOD1 (n) that overdrives at present again and be used as output frame data SO (n), input source driver 604.
And after step 706, more comprise step 710.In step 710; When the relation of previous original frame data F (n-1) and present original frame data F (n) is positioned at outside the scope of preestablishing; According to the first previous adjustment back frame data F1 (n-1) and first adjustment back frame data F1 (n) at present, and reference table, be used as output frame data SO (n) to export the first frame data SOD1 (n) that overdrives at present; Input source driver 604; And after the set time, output second adjustment back frame data F2 (n) at present is used as output frame data SO (n), input source driver 604.
The disclosed driver element 602 of present embodiment judges in order to when the frequency upgrading with output frame data SO (n) is twice whether previous present original frame data F (n-1) of reaching and F (n) drop in the scope of preestablishing.If, the disclosed driver element 602 of present embodiment frame period TS1 ' (n) and TS2 ' (n) in, all export the first frame data SOD1 (n) that overdrives at present and be used as output frame data SO (n) output.So; Both having made the frequency upgrading with output frame data SO (n) is the twice of original frame data F (n); Present embodiment was being judged previous and present original frame data F (n-1) and F (n) drop on when preestablishing scope; Through letting pixel electrode be maintained to correspond to the time lengthening of overdrive voltage of output frame data SO (n); Likewise can solve effectively in the conventional practice, the liquid crystal molecule reaction time of in the zone 102 and 104 of Figure 1B, being taken place is long and make the problem that pixel can't reach should have brightness.
In above-mentioned first, second and third embodiment, storer 2023,4023 and 6023 for example be electricallyerasable ROM (EEROM) (Electrically Erasable Read Only Memory, EEROM).In first embodiment, storer 2023 is in order to store first and second form; In second and third embodiment, storer 4023 and 6023 are respectively in order to store form.
And in the above-described embodiments; Though be that the example that is operating as of the twice of present original frame data F (n) is described only, yet to be not limited to output frame data SO (n) is promoted be the operation of two frequencys multiplication to the disclosed driver element 202,402 and 602 of the foregoing description with frequency upgrading with output frame data SO (n).And the impact damper 2022,4022 and 6022 of the foregoing description for example is synchronous DRAM impact damper (Synchronous Dynamic Random Access Memory Buffer, SDRAM Buffer).
And in first embodiment, first overdrive at present frame data and second overdrive frame data SOD1 (n) and SOD2 (n) at present can be equal in fact, also can be unequal in fact.For example the first frame data SOD1 (n) that overdrives at present drives (Low Driving) frame data of overdriving for low, that is first overdrive at present frame data SOD1 (n) the GTG value also can less than second overdrive frame data SOD2 (n) at present the GTG value.
Driver element of the present invention was used for a frame period; Two frame data or two frame data of overdriving optionally are provided of overdriving; Present embodiment is through letting pixel electrode be maintained to correspond to the time lengthening of overdrive voltage of output frame data SO (n); Likewise can solve effectively in the conventional practice, the liquid crystal molecule reaction time of in the zone 102 and 104 of Figure 1B, being taken place is long and make the problem that pixel can't reach should have brightness.Therefore when the present invention can be implemented in and carries out frame updating with frequency multiplication, all can reach the reaction velocity of accelerating liquid crystal molecule, let picture show desired picture fast and correctly, to improve the advantage of picture display quality for the data of all GTG values.
In sum, though the present invention has adopted three embodiment openly as above, yet it is not in order to limit the present invention.Those skilled in the art of the present invention are not breaking away from the spirit and scope of the present invention, should carry out various changes and retouching.Therefore, protection scope of the present invention should be as the criterion with the protection domain of subsidiary claim.
Claims (14)
1. a driver element is applied to display, and said driver element comprises:
Impact damper; In order to store previous original frame data and present original frame data; And according to the frame data after said previous original frame data generation first previous adjustment the and the second previous back frame data of adjusting, and according to frame data after frame data and second are adjusted at present after the said present original frame data generation first present adjustment; And
Time schedule controller comprises:
The first extremely drive data generation unit is in order to receiving the said first previous adjustment back frame data and said first adjustment back frame data at present, and with reference to first form, to export first frame data to the said display of overdriving at present;
The second extremely drive data generation unit is in order to receiving the said second previous adjustment back frame data and said second adjustment back frame data at present, and with reference to second form, to export second frame data of overdriving at present; And
Delay cell in order to receiving said second frame data of overdriving, and is overdrived after frame data postpone the set time said second at present, exports said second frame data to the said display of overdriving at present,
The length of wherein said set time equals the frame period of the said first present adjustment back frame data in fact.
2. driver element as claimed in claim 1, wherein, said first at present the frame period of adjustment back frame data equals frame period half the of said present original frame data in fact at present frame period and said second of adjustment back frame data.
3. driver element as claimed in claim 1, wherein, the said first previous back frame data of adjusting were identical with the said second previous adjustment back frame data, and frame data are also identical after the said first present adjustment back frame data and said second adjustment at present.
4. display comprises:
Display panel;
Driver element comprises:
Impact damper; In order to store previous original frame data and present original frame data; And according to the frame data after said previous original frame data generation first previous adjustment the and the second previous back frame data of adjusting, and according to frame data after frame data and second are adjusted at present after the said present original frame data generation first present adjustment; And
Time schedule controller comprises:
The first extremely drive data generation unit is in order to receiving the said first previous adjustment back frame data and said first adjustment back frame data at present, and with reference to first form, to export first frame data of overdriving at present;
The second extremely drive data generation unit is in order to receiving the said second previous adjustment back frame data and said second adjustment back frame data at present, and with reference to second form, to export second frame data of overdriving at present; And
Delay cell in order to receiving said second frame data of overdriving, and is overdrived after frame data postpone the set time said second at present, exports said second frame data of overdriving at present; And
Data driver is coupled to said driver element and said display panel, and said data driver is in order to receiving said first and said second frame data of overdriving at present, and drives said display panel according to said first and said second frame data of overdriving at present,
The length of wherein said set time equals the frame period of the said first present adjustment back frame data in fact.
5. a driver element is applied to display, and said driver element comprises:
Impact damper; In order to store previous original frame data and present original frame data; And according to the frame data after said previous original frame data generation first previous adjustment the and the second previous back frame data of adjusting, and according to frame data after frame data and second are adjusted at present after the said present original frame data generation first present adjustment; And
Time schedule controller; Whether the relation in order to judge said previous original frame data and said present original frame data is arranged in the scope of preestablishing, if then adjust the back frame data at present according to the said first previous adjustment back frame data and said first; Reference table; Frame data overdrive at present to said display to export first, and after the set time, again output once said first frame data to the said display of overdriving at present; If not, then adjust the back frame data at present, with reference to said form according to the said first previous adjustment back frame data and said first; Frame data overdrive at present to source electrode driver to export said first; And after the said set time, export said second and adjust the back frame data at present to said display
The length of wherein said set time equals the frame period of the said first present adjustment back frame data in fact.
6. driver element as claimed in claim 5; Wherein, Said time schedule controller judges according to the data minimal difference whether said previous original frame data and said present original frame data are positioned at the said scope that preestablishes; When the data difference of said previous original frame data and said present original frame data during more than or equal to said data minimal difference, said previous original frame data and said present original frame data are arranged in the said scope that preestablishes; When the data difference of said previous original frame data and said present original frame data during less than said data minimal difference, said previous original frame data and said present original frame data drop on said preestablishing outside the scope.
7. display comprises:
Display panel;
Driver element comprises:
Impact damper; In order to store previous original frame data and present original frame data; And according to the frame data after said previous original frame data generation first previous adjustment the and the second previous back frame data of adjusting, and according to frame data after frame data and second are adjusted at present after the said present original frame data generation first present adjustment; And
Time schedule controller; Whether the relation in order to judge said previous original frame data and said present original frame data is arranged in the scope of preestablishing, if then adjust the back frame data at present according to the said first previous adjustment back frame data and said first; Reference table; Exporting first frame data of overdriving at present, and after the set time, output once said first frame data of overdriving at present again; If not, then according to the said first previous adjustment back frame data and said first adjustment back frame data at present,, exporting said first frame data of overdriving at present, and after the said set time, export the said second adjustment back frame data at present with reference to said form; And
Data driver; Be coupled to said driver element and said display panel; Said first at present overdrive frame data and the said second at present adjustment back frame data of said data driver in order to receive that said driver element exports; And according to said first overdrive at present frame data and said second at present adjustment back frame data drive said display panel
The length of wherein said set time equals the frame period of the said first present adjustment back frame data in fact.
8. a driver element is applied to display, and said driver element comprises:
Impact damper; In order to store previous original frame data and present original frame data; And according to the frame data after said previous original frame data generation first previous adjustment the and the second previous back frame data of adjusting, and according to frame data after frame data and second are adjusted at present after the said present original frame data generation first present adjustment; And
Time schedule controller comprises:
The extremely drive data generation unit is in order to receiving the said first previous adjustment back frame data and said first adjustment back frame data at present, and reference table, to export first frame data to the said display of overdriving at present; And
Delay cell in order to receiving said first frame data of overdriving at present, and after the set time, is exported said first frame data to the said display of overdriving at present again,
The length of wherein said set time equals the frame period of the said first present adjustment back frame data in fact.
9. display comprises:
Display panel;
Driver element comprises:
Impact damper; In order to store previous original frame data and present original frame data; And according to the frame data after said previous original frame data generation first previous adjustment the and the second previous back frame data of adjusting, and according to frame data after frame data and second are adjusted at present after the said present original frame data generation first present adjustment; And
Time schedule controller comprises:
The extremely drive data generation unit is in order to receiving the said first previous adjustment back frame data and said first adjustment back frame data at present, and reference table, to export first frame data of overdriving at present; And
Delay cell in order to receiving said first frame data of overdriving at present, and after the set time, is exported said first frame data of overdriving at present again; And
Data driver; Be coupled to said driver element and said display panel; Said first at present the overdrive frame data of said data driver in order to receive that said driver element exports, and drive said display panel according to said first frame data of overdriving at present
The length of wherein said set time equals the frame period of the said first present adjustment back frame data in fact.
10. driving method; Be applied to display; Said display comprises source electrode driver and driver element; Said driver element comprises impact damper and time schedule controller, and said time schedule controller comprises the first extremely drive data generation unit, second extremely drive data generation unit and the delay cell, and said driving method comprises:
(a) previous original frame data and present original frame data to said impact damper is provided;
(b) according to the frame data after the said previous original frame data output first previous adjustment and the second previous adjustment back frame data, and according to frame data after the said present original frame data output first present adjustment back frame data and second adjustment at present;
(c) according to the said first previous adjustment back frame data and said first adjustment back frame data at present, and with reference to first form, to export first frame data to the said source electrode driver of overdriving at present;
(d) according to the said second previous adjustment back frame data and said second adjustment back frame data at present, and with reference to second form, to export second frame data of overdriving at present; And
(e) overdrive frame data at present after the delay set time with said second, import said source electrode driver,
The length of wherein said set time equals the frame period of the said first present adjustment back frame data in fact.
11. a driving method is applied in the display, said display comprises source electrode driver and driver element, and said driver element comprises impact damper and time schedule controller, and said driving method comprises:
(a) previous original frame data and present original frame data to said impact damper is provided;
(b) according to the frame data after the said previous original frame data output first previous adjustment and the second previous adjustment back frame data, and according to frame data after the said present original frame data output first present adjustment back frame data and second adjustment at present;
Whether the relation of (c) judging said previous original frame data and said present original frame data is arranged in the scope of preestablishing; And
(d) be arranged in said when preestablishing scope when the relation of said previous original frame data and said present original frame data; Adjust the back frame data at present according to the said first previous adjustment back frame data and said first; And reference table, overdrive frame data at present to said source electrode driver to export first, and after the set time; Output once said first is overdrived frame data at present to said source electrode driver again
The length of wherein said set time equals the frame period of the said first present adjustment back frame data in fact.
12. driving method as claimed in claim 11 wherein, in step (c) afterwards, also comprises:
(d ') is when that the relation of said previous original frame data and said present original frame data is positioned at is said when preestablishing outside the scope; Adjust the back frame data at present according to the said first previous adjustment back frame data and said first; And with reference to said form; Frame data overdrive at present to said source electrode driver to export said first, and after the said set time, export said second at present adjustment back frame data to said source electrode driver.
13. driving method as claimed in claim 11; Wherein, Said time schedule controller judges according to the data minimal difference whether said previous original frame data and said present original frame data are positioned at the said scope that preestablishes; When the data difference of said previous original frame data and said present original frame data during more than or equal to said data minimal difference, said previous original frame data and said present original frame data drop on said preestablishing in the scope; When the data difference of said previous original frame data and said present original frame data during less than said data minimal difference, said previous original frame data and said present original frame data drop on said preestablishing outside the scope.
14. a driving method is applied to display, said display comprises source electrode driver and driver element, and said driver element comprises impact damper and time schedule controller, and said driving method comprises:
(a) previous original frame data and present original frame data to said impact damper is provided;
(b) according to the frame data after the said previous original frame data output first previous adjustment and the second previous adjustment back frame data, and according to frame data after the said present original frame data output first present adjustment back frame data and second adjustment at present; And
(c) adjust the back frame data at present according to the said first previous adjustment back frame data and said first; Reference table is overdrived frame data to said source electrode driver at present to export first, and after the set time; Export said first again and overdrive frame data at present to said source electrode driver
The length of wherein said set time equals the frame period of the said first present adjustment back frame data in fact.
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| CN2007101025133A CN101308631B (en) | 2007-05-14 | 2007-05-14 | Driving element having time schedule controller and driving method thereof |
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| CN2007101025133A CN101308631B (en) | 2007-05-14 | 2007-05-14 | Driving element having time schedule controller and driving method thereof |
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| TWI453712B (en) | 2011-01-28 | 2014-09-21 | Novatek Microelectronics Corp | Control method for bi-stable displaying, timing controller therewith, and a bi-stable display device with such timing controller |
| CN102646392B (en) * | 2011-02-21 | 2015-03-04 | 联咏科技股份有限公司 | Bi-stable display control method, time sequence controller and bi-stable display device |
| CN103678918A (en) * | 2013-12-16 | 2014-03-26 | 中国人民解放军63791部队 | Method for processing flight timing sequence minimum difference value of spacecraft |
| CN105913825A (en) * | 2016-06-30 | 2016-08-31 | 京东方科技集团股份有限公司 | Liquid crystal display driving method, liquid crystal display and display device |
| CN110223622A (en) * | 2019-06-11 | 2019-09-10 | 惠科股份有限公司 | The control circuit and compensation method that data are shown |
| CN113870757B (en) * | 2020-06-30 | 2023-07-04 | 京东方科技集团股份有限公司 | Driving method, driving circuit and display device of display panel |
| CN116110326A (en) * | 2021-11-09 | 2023-05-12 | 深圳市奥拓电子股份有限公司 | Time division multiplexing LED display driving method and chip thereof |
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| CN1596431A (en) * | 2001-11-29 | 2005-03-16 | 汤姆森许可贸易公司 | Method of improving the luminous efficiency of a sequential-colour matrix display |
| EP1521237A2 (en) * | 2003-09-30 | 2005-04-06 | Sharp Kabushiki Kaisha | System for displaying images on a display |
| JP2006091412A (en) * | 2004-09-24 | 2006-04-06 | Victor Co Of Japan Ltd | Image processing apparatus |
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| US5038209A (en) * | 1990-09-27 | 1991-08-06 | At&T Bell Laboratories | Adaptive buffer/quantizer control for transform video coders |
| CN1596431A (en) * | 2001-11-29 | 2005-03-16 | 汤姆森许可贸易公司 | Method of improving the luminous efficiency of a sequential-colour matrix display |
| EP1521237A2 (en) * | 2003-09-30 | 2005-04-06 | Sharp Kabushiki Kaisha | System for displaying images on a display |
| JP2006091412A (en) * | 2004-09-24 | 2006-04-06 | Victor Co Of Japan Ltd | Image processing apparatus |
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