CN102402935A - Display and method capable of improving picture quality - Google Patents
Display and method capable of improving picture quality Download PDFInfo
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- CN102402935A CN102402935A CN201110365198XA CN201110365198A CN102402935A CN 102402935 A CN102402935 A CN 102402935A CN 201110365198X A CN201110365198X A CN 201110365198XA CN 201110365198 A CN201110365198 A CN 201110365198A CN 102402935 A CN102402935 A CN 102402935A
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Abstract
The invention relates to a display capable of improving picture quality, comprising a display panel, a time schedule controller and a source electrode driving circuit. The time schedule controller is used for generating one scanning start signal and at least one control signal in a non-display interval according to the polarity of the last data before the non-display interval of the display panel and the polarity of the first data after the non-display interval of the display panel; the source electrode driving circuit is used for generating at least one data according to the polarity of the last data before the non-display interval of the display panel, the potential of the first data after the non-display interval of the display panel and the at least one control signal; and the source electrode driving circuit can not change the last data of the at least one data after the at least one control signal of the non-display interval.
Description
Technical field
The invention relates to a kind of display and method thereof, refer to a kind of display and method thereof of improving image quality especially.
Background technology
Please see figures.1.and.2; Fig. 1 for prior art explanation at (blanking time) VB between (active time) VA and no viewing area between the viewing area of display panel; The sequential synoptic diagram of the common voltage VCOM of the data of scanning start signal STV, source electrode drive circuit output, the control signal CS of time schedule controller and display panel; Fig. 2 for prior art explanation when the data of display panel frame update, the synoptic diagram of bright band appears above the display panel.As shown in Figure 1, the time schedule controller of display panel (TCON) during VB, can continue to export control signal CS between no viewing area.Therefore, time schedule controller may command source electrode drive circuit continues finishing touch data or the output constant value (for example corresponding to the current potential of black (+) or corresponding to the current potential of deceiving (-)) of output picture Fn according to control signal CS.
As shown in Figure 1, among the picture Fn of VA, source electrode drive circuit is exported the data with the current potential of black (+) corresponding to 128 (-) in regular turn between the viewing area, and in picture Fn, the finishing touch data DL of source electrode drive circuit output is the current potential corresponding to black (+).Therefore, among the VB, time schedule controller can be controlled source electrode drive circuit and export the data with the current potential of black (-) corresponding to black (+) in regular turn between no viewing area.As shown in Figure 1, between the viewing area among the picture Fn+1 of VA, the first stroke data DF of source electrode drive circuit output be the current potential corresponding to black (-), and between no viewing area among the VB, the finishing touch data DLB that source electrode drive circuit is exported is corresponding to the current potential of deceiving (+).That is source electrode drive circuit corresponding to the current potential of the output data of article one sweep trace of picture Fn+1 will by corresponding to the potential change of black (+) to current potential (voltage difference 13V) corresponding to black (-), cause the common voltage VCOM of display panel to be coupled downwards (the A point of Fig. 1).Therefore; As shown in Figure 2; When the data of display panel frame update (by picture Fn to picture Fn+1),, cause the display panel top bright band to occur because receive the influence of source electrode drive circuit output data polarity in the display panel corresponding to the common voltage of the pixel of article one sweep trace.
Summary of the invention
One embodiment of the invention provide a kind of method of improving image quality.This method comprises the polarity according to the first stroke data after between the polarity of finishing touch data before between the no viewing area of a display panel and this no viewing area, at least one control signal of generation between this no viewing area; In between this no viewing area; According to current potential and this at least one control signal of the first stroke data after between the polarity of finishing touch data before between the no viewing area of this display panel, this no viewing area, generation and at least one synchronous data of this at least one control signal; Wherein after this at least one control signal, do not change the finishing touch data in these at least one data.
Another embodiment of the present invention provides a kind of display that improves image quality.This display comprises a display panel, time schedule controller and one source pole driving circuit.This time schedule controller is in order to produce the one scan start signal; And according to the polarity of the first stroke data after between the polarity of finishing touch data before between the no viewing area of a display panel and this no viewing area, at least one control signal of generation between this no viewing area.This source electrode drive circuit is to be coupled to this time schedule controller; Current potential in order to according to the first stroke data after between the polarity of finishing touch data before between the no viewing area of this display panel, this no viewing area reaches this at least one control signal; Produce and at least one synchronous data of this at least one control signal; And before between this no viewing area and after this scanning start signal produces; Generation is corresponding to the data between a viewing area, and wherein this source electrode drive circuit does not change the finishing touch data in these at least one data after this at least one control signal.
The present invention provides a kind of display and the method that can improve image quality that improves image quality.This display and this method are to utilize time schedule controller according to afterwards the polarity of the first stroke data between the polarity of finishing touch data before between the no viewing area of a display panel and this no viewing area; In between this no viewing area, produce at least one control signal; Utilize current potential and this at least one control signal of the first stroke data of one source pole driving circuit according to the polarity of the finishing touch data before between the no viewing area of this display panel, after resulting between this no viewing area, generation and at least one synchronous data of this at least one control signal.In addition, this source electrode drive circuit does not change the finishing touch data in these at least one data after this at least one control signal.Therefore, the existing assembly of the present invention's this display capable of using is to improve the image quality of this display.
Description of drawings
Fig. 1 explains between the viewing area of display panel and between no viewing area for prior art, the sequential synoptic diagram of the common voltage of the data of scanning start signal, source electrode drive circuit output, the control signal of time schedule controller and display panel.
Fig. 2 for prior art explanation when the data of display panel frame update, the synoptic diagram of bright band appears above the display panel.
Fig. 3 is a kind of synoptic diagram that improves the display of image quality of one embodiment of the invention explanation.
Fig. 4 is between the viewing area of first embodiment of the present invention explanation display panel and between no viewing area, the sequential synoptic diagram of the common voltage of scanning start signal, data that source electrode drive circuit is exported and display panel.
Fig. 5 explains between the viewing area of display panel and between no viewing area for the second embodiment of the present invention, the sequential synoptic diagram of the data of scanning start signal, source electrode drive circuit output and the common voltage of display panel.
Fig. 6 explains between the viewing area of display panel and between no viewing area for the third embodiment of the present invention, the sequential synoptic diagram of the data of scanning start signal, source electrode drive circuit output and the common voltage of display panel.
Fig. 7 explains between the viewing area of display panel and between no viewing area for the fourth embodiment of the present invention, the sequential synoptic diagram of the data of scanning start signal, source electrode drive circuit output and the common voltage of display panel.
Fig. 8 be the embodiment of key diagram 4, Fig. 5, Fig. 6, Fig. 7 between no viewing area in, the operational flowchart of buffer, time schedule controller and source electrode drive circuit.
Fig. 9 is for being a kind of process flow diagram that improves the method for image quality of fifth embodiment of the present invention explanation.
Figure 10 is for being a kind of process flow diagram that improves the method for image quality of sixth embodiment of the present invention explanation.
Embodiment
Please with reference to Fig. 3 and Fig. 4; Fig. 3 is a kind of synoptic diagram that improves the display 300 of image quality of one embodiment of the invention explanation; Fig. 4 explains between the viewing area of a display panel 302 VB between VA and no viewing area, the sequential synoptic diagram of the data of one scan start signal STV, 304 outputs of one source pole driving circuit and the common voltage VCOM of display panel 302 for the first embodiment of the present invention.As shown in Figure 3, display 300 comprises display panel 302, source electrode drive circuit 304 and time schedule controller 306.Like Fig. 3 and shown in Figure 4; Time schedule controller 306 is in order to produce scanning start signal STV; And according to the polarity (positive polarity) of the finishing touch data DL of (the picture Fn of VA between the viewing area) source electrode drive circuit before the VB between the no viewing area of display panel 302 304 output and there is not between the viewing area polarity (negative polarity) of the first stroke data DF of (the picture Fn+1 of VA between the viewing area) source electrode drive circuit 304 outputs after the VB; VB produces a control signal C1 between no viewing area, and wherein not having between the viewing area VB is before scanning start signal STV produces.But the present invention is not limited to time schedule controller 306 VB between no viewing area and only produces a control signal C1.That is the polarity of the first stroke data that source electrode drive circuit 304 is exported after the VB between polarity and the no viewing area of the finishing touch data of source electrode drive circuit 304 outputs before the VB between no viewing area is when different, and the number of time schedule controller 306 generation control signals is the odd number more than or equal to 1.In addition, time schedule controller 306 comprises a buffer 3062 in addition, in order to the current potential according to the first stroke data DF after the VB between no viewing area, stores the current potential corresponding to black (+).Source electrode drive circuit 304 is to be coupled to time schedule controller 306; In order to according to the polarity of data DL, be stored in current potential and control signal C1 in the buffer 3062 corresponding to black (+); Between no viewing area, produce a data DB among the VB; And source electrode drive circuit 304 does not change data DB after control signal C1.In addition, after source electrode drive circuit 304 produces with scanning start signal STV before the VB, can produce data corresponding to VA between the viewing area (that is corresponding to picture Fn and the picture Fn+1 of VA between the viewing area data) between no viewing area.Therefore, after display panel 302 can produce with scanning start signal STV before the VB between no viewing area according to source electrode drive circuit 304, generation showed corresponding picture (picture Fn and picture Fn+1) corresponding to the data of VA between the viewing area.
As shown in Figure 4, the current potential of data DL (positive polarity) is the current potential corresponding to black (+).Because the polarity of the polarity of data DL and data DF is different, so time schedule controller 306 VB between no viewing area produces a control signal C1.Buffer 3062 stores the current potential corresponding to black (+) according to the current potential (corresponding to the current potential of black (-)) of data DF.But the present invention is not limited to the current potential of data DL is the current potential corresponding to black (+), and the current potential of data DF is the current potential corresponding to black (-).In addition, the polarity that the present invention also is not subject to data DL is positive polarity, and the polarity of data DF is negative polarity.So, between no viewing area among the VB, source electrode drive circuit 304 can and be stored in the buffer 3062 corresponding to the current potentials of black (+) according to polarity, the control signal C1 of data DL, after data DL, produces data DB.Because the polarity of data DL is positive polarity,, the polarity of data DB is current potential corresponding to black (-) so being the current potential of negative polarity and data DB.In addition, after control signal C1, because time schedule controller 306 no longer produces control signal up to picture Fn+1, so source electrode drive circuit 304 after control signal C1, does not change data DB.Because the current potential of data DB is identical with the current potential that does not have the first stroke data DF that source electrode drive circuit 304 is exported after the VB between the viewing area; And the polarity of data DB is also identical with the polarity of not having the first stroke data DF that source electrode drive circuit 304 is exported after the VB between the viewing area, so the common voltage VCOM of display panel 302 can't be coupled downwards (the B point of Fig. 4).In addition; Shown in the C point of Fig. 4; Because the current potential of the output data of source electrode drive circuit 304 is to be changed to the current potential (current potential of data DB) corresponding to black (-) by the current potential (current potential of data DL) corresponding to black (+), so the common voltage VCOM of display panel 302 is coupled downwards.But the C of Fig. 4 point is between no viewing area, in the VB, therefore, can not have influence on the image quality of display panel 302.
Please with reference to Fig. 3 and Fig. 5; Fig. 5 is second embodiment of the present invention explanation VB between VA between the viewing area of display panel 302 and no viewing area, the sequential synoptic diagram of the data of one scan start signal STV, source electrode drive circuit 304 outputs and the common voltage VCOM of display panel 302.Like Fig. 3 and shown in Figure 5; Time schedule controller 306 produces scanning start signal STV; And according to the polarity (positive polarity) of the finishing touch data DL of (the picture Fn of VA between the viewing area) source electrode drive circuit before the VB between the no viewing area of display panel 302 304 output and there is not between the viewing area polarity (negative polarity) of the first stroke data DF of (the picture Fn+1 of VA between the viewing area) source electrode drive circuit 304 outputs after the VB, VB produces a control signal C1 between no viewing area.As shown in Figure 5, the current potential of data DL (positive polarity) is the current potential corresponding to black (+).Because the polarity of the polarity of data DL and data DF is different, so time schedule controller 306 VB between no viewing area produces a control signal C1.Buffer 3062 stores the current potential corresponding to 128 (+) according to the current potential (corresponding to the current potential of 128 (-)) of data DF.But the present invention is not limited to the current potential of data DL is the current potential corresponding to black (+), and the current potential of data DF is the current potential corresponding to 128 (-).In addition, the polarity that the present invention also is not subject to data DL is positive polarity, and the polarity of data DF is negative polarity.So, between no viewing area among the VB, source electrode drive circuit 304 can and be stored in the buffer 3062 corresponding to the current potentials of 128 (+) according to polarity, the control signal C1 of data DL, after data DL, produces data DB.Because the polarity of data DL is positive polarity, so the polarity of data DB is that the current potential of negative polarity and data DB is for corresponding to the current potential of 128 (-).In addition, after control signal C1, because time schedule controller 306 no longer produces control signal up to picture Fn+1, so source electrode drive circuit 304 after control signal C1, does not change data DB.Because the current potential (corresponding to the current potential of 128 (-)) of data DB is identical with the current potential (corresponding to the current potential of 128 (-)) that does not have the first stroke data DF that source electrode drive circuit 304 is exported after the VB between the viewing area; And the polarity of data DB is also identical with the polarity of not having the first stroke data DF that source electrode drive circuit 304 is exported after the VB between the viewing area, so the common voltage VCOM of display panel 302 can't be coupled downwards (the D point of Fig. 5).In addition; Shown in the E point of Fig. 5; Because the current potential of the output data of source electrode drive circuit 304 is to be changed to the current potential (current potential of data DB) corresponding to 128 (-) by the current potential (current potential of data DL) corresponding to black (+), so the common voltage VCOM of display panel 302 is coupled downwards.But the E of Fig. 5 point is between no viewing area, in the VB, therefore, can not have influence on the image quality of display panel 302.
Please with reference to Fig. 3 and Fig. 6; Fig. 6 is third embodiment of the present invention explanation VB between VA between the viewing area of display panel 302 and no viewing area, the sequential synoptic diagram of the data of one scan start signal STV, source electrode drive circuit 304 outputs and the common voltage VCOM of display panel 302.Like Fig. 3 and shown in Figure 6; Time schedule controller 306 is in order to produce scanning start signal STV; And according to the polarity (positive polarity) of the finishing touch data DL of (the picture Fn of VA between the viewing area) source electrode drive circuit before the VB between the no viewing area of display panel 302 304 output and there is not between the viewing area polarity (positive polarity) of the first stroke data DF of (the picture Fn+1 of VA between the viewing area) source electrode drive circuit 304 outputs after the VB, VB produces two control signal C1, C2 between no viewing area.But the present invention is not limited to time schedule controller 306 VB between no viewing area and produces two control signal C1, C2.That is the polarity of the first stroke data that source electrode drive circuit 304 is exported after the VB between polarity and the no viewing area of the finishing touch data of source electrode drive circuit 304 outputs before the VB between no viewing area is when identical, and the number of time schedule controller 306 generation control signals is the even number more than or equal to 2.As shown in Figure 6, the current potential of data DL (positive polarity) is the current potential corresponding to black (+).Because the polarity of data DL is identical with the polarity of data DF, so time schedule controller 306 VB between no viewing area produces two control signal C1, C2.Buffer 3062 stores the current potential corresponding to 128 (+) according to the current potential (corresponding to the current potential of 128 (+)) of data DF.But the present invention is not limited to the current potential of data DL is the current potential corresponding to black (+), and the current potential of data DF is the current potential corresponding to 128 (+).In addition, the polarity that the present invention also is not subject to data DL is positive polarity, and the polarity of data DF is positive polarity.So; Between no viewing area among the VB; Source electrode drive circuit 304 can and be stored in the buffer 3062 current potentials corresponding to 128 (+) according to polarity, the control signal C1 of data DL; After data DL, produce data DB1 (corresponding to the current potential of 128 (-)), and, after data DB1, produce a data DB2 (corresponding to the current potential of 128 (+)) according to the current potential of polarity, control signal C2 and the data DB1 of data DB1.Because the polarity of data DL is positive polarity, thus the polarity of data DB1 be the current potential of negative polarity and data DB1 for corresponding to the current potential of 128 (-), and the polarity of data DB2 is that the current potential of positive polarity and data DB2 is the current potential corresponding to 128 (+).In addition, after control signal C2, because time schedule controller 306 no longer produces control signal up to picture Fn+1, so source electrode drive circuit 304 after control signal C2, does not change data DB2.Because the current potential (corresponding to the current potential of 128 (+)) of data DB2 is identical with the current potential (corresponding to the current potential of 128 (+)) that does not have the first stroke data DF that source electrode drive circuit 304 is exported after the VB between the viewing area; And the polarity of data DB2 is also identical with the polarity of not having the first stroke data DF that source electrode drive circuit 304 is exported after the VB between the viewing area, so the common voltage VCOM of display panel 302 can't be coupled downwards (the F point of Fig. 6).In addition; Shown in the G point of Fig. 6; Because the current potential of the output data of source electrode drive circuit 304 is to be changed to the current potential (current potential of data DB1) corresponding to 128 (-) by the current potential (current potential of data DL) corresponding to black (+), so the common voltage VCOM of display panel 302 is coupled downwards.But the G of Fig. 6 point is between no viewing area, in the VB, therefore, can not have influence on the image quality of display panel 302.
Please with reference to Fig. 3 and Fig. 7; Fig. 7 is fourth embodiment of the present invention explanation VB between VA between the viewing area of display panel 302 and no viewing area, the sequential synoptic diagram of the data of one scan start signal STV, source electrode drive circuit 304 outputs and the common voltage VCOM of display panel 302.Like Fig. 3 and shown in Figure 7; Time schedule controller 306 is in order to produce scanning start signal STV; And according to the polarity (positive polarity) of the finishing touch data DL of (the picture Fn of VA between the viewing area) source electrode drive circuit before the VB between the no viewing area of display panel 302 304 output and there is not between the viewing area polarity (positive polarity) of the first stroke data DF of (the picture Fn+1 of VA between the viewing area) source electrode drive circuit 304 outputs after the VB, VB produces two control signal C1, C2 between no viewing area.But the present invention is not limited to time schedule controller 306 VB between no viewing area and produces two control signal C1, C2.As shown in Figure 7, the current potential of data DL (positive polarity) is the current potential corresponding to black (+).Because the polarity of data DL is identical with the polarity of data DF, so time schedule controller 306 VB between no viewing area produces two control signal C1, C2.Buffer 3062 stores the current potential corresponding to black (+) according to the current potential (corresponding to the current potential of black (+)) of data DF.But the present invention is not limited to the current potential of data DL is the current potential corresponding to black (+), and the current potential of data DF is the current potential corresponding to black (+).In addition, the polarity that the present invention also is not subject to data DL is positive polarity, and the polarity of data DF also is positive polarity.So; Between no viewing area among the VB; Source electrode drive circuit 304 can and be stored in the buffer 3062 current potentials corresponding to black (+) according to polarity, the control signal C1 of data DL; After data DL, produce a data DB1 (corresponding to the current potential of black (-)), and, data DB1 after, produce a data DB2 (corresponding to the current potential of deceiving (+)) according to the current potential of polarity, control signal C2 and the data DB1 of data DB1.Because the polarity of data DL is positive polarity, be current potential so the polarity of data DB1 is the current potential of negative polarity and data DB1, and the polarity of data DB2 is that the current potential of positive polarity and data DB2 is the current potential corresponding to black (+) corresponding to black (-).In addition, after control signal C2, because time schedule controller 306 no longer produces control signal up to picture Fn+1, so source electrode drive circuit 304 after control signal C2, does not change data DB2.Because the current potential of data DB2 (corresponding to the current potential of black (+)) is identical with the current potential that does not have the first stroke data DF that source electrode drive circuit 304 is exported after the VB between the viewing area (corresponding to the current potential of black (+)); And the polarity of data DB2 is also identical with the polarity of not having the first stroke data DF that source electrode drive circuit 304 is exported after the VB between the viewing area, so the common voltage VCOM of display panel 302 can't be coupled downwards (the H point of Fig. 7).In addition; Shown in the I point of Fig. 7; Because the current potential of the output data of source electrode drive circuit 304 is to be changed to the current potential (current potential of data DB1) corresponding to black (-) by the current potential (current potential of data DL) corresponding to black (+), so the common voltage VCOM of display panel 302 is coupled downwards.But the I of Fig. 7 point is between no viewing area, in the VB, therefore, can not have influence on the image quality of display panel 302.
Please with reference to Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8, Fig. 8 be the embodiment of key diagram 4, Fig. 5, Fig. 6, Fig. 7 between no viewing area among the VB, the operational flowchart of buffer 3062, time schedule controller 306 and source electrode drive circuit 304.As shown in Figure 8, in step 802, the current potential of the first stroke data DF between the no viewing area of buffer 3062 records after the VB.In step 804, buffer 3062 stores the current potential (embodiment of Fig. 5 and Fig. 7) corresponding to black (+) according to the current potential of data DF.In step 806, buffer 3062 stores the current potential (embodiment of Fig. 4 and Fig. 6) corresponding to 128 (+) according to the current potential of data DF.In step 808; Because the polarity of the first stroke data DF that source electrode drive circuit 304 is exported after the VB between the polarity of not having a finishing touch data DL of source electrode drive circuit 304 outputs before the VB between the viewing area and no viewing area is different, so time schedule controller 306 generation control signal C1 (embodiment of Fig. 4 and Fig. 5).In step 810; Because the polarity of the first stroke data DF that source electrode drive circuit 304 is exported after the VB between the polarity of not having a finishing touch data DL of source electrode drive circuit 304 outputs before the VB between the viewing area and no viewing area is identical, so two control signal C1 of time schedule controller 306 generations, C2 (embodiment of Fig. 6 and Fig. 7).In step 812, source electrode drive circuit 304 is according to control signal C1 and be stored in buffer 3062 interior current potentials corresponding to black (+), after data DL, produces the data DB (embodiment of Fig. 4) corresponding to the current potential of black (-).In step 814, source electrode drive circuit 304 is according to control signal C1 and be stored in buffer 3062 interior current potentials corresponding to 128 (+), after data DL, produces the data DB (embodiment of Fig. 5) corresponding to the current potential of 128 (-).In step 816; Source electrode drive circuit 304 is according to control signal C1 and be stored in buffer 3062 interior current potentials corresponding to 128 (+); After data DL, produce data DB1 corresponding to the current potential of 128 (-); And, after data DB1, produce data DB2 (embodiment of Fig. 6) corresponding to the current potential of 128 (+) according to the current potential of control signal C2 and data DB1.In step 818; Source electrode drive circuit 304 is according to control signal C1 and be stored in buffer 3062 interior current potentials corresponding to black (+); After data DL, produce data DB1 corresponding to the current potential of black (-); And, after data DB1, produce data DB2 (embodiment of Fig. 7) corresponding to the current potential of black (+) according to the current potential of control signal C2 and data DB1.
Please with reference to Fig. 3, Fig. 4, Fig. 5 and Fig. 9, Fig. 9 is a kind of process flow diagram that improves the method for image quality of fifth embodiment of the present invention explanation.The method of Fig. 9 is to utilize display 300 explanations of Fig. 3, and detailed step is following:
Step 900: beginning;
Step 902: produce data corresponding to VA between the viewing area;
Step 904: the current potential according to the first stroke data DF after the VB between no viewing area stores a current potential in buffer 3062;
Step 906: according to the polarity of finishing touch data DL before the VB between the no viewing area of display panel 302 and there is not the polarity of the first stroke data DF after the VB between the viewing area, VB produces a control signal C1 between no viewing area;
Step 908:, produce and a synchronous data DB of control signal C1 according to polarity, the current potential that is stored in buffer 3062 and the control signal C1 of finishing touch data DL before the VB between the no viewing area of display panel 302;
Step 910: after the control signal C1 of VB, source electrode drive circuit does not change data DB between no viewing area;
Step 912: produce one scan start signal STV, rebound step 902;
In step 902, source electrode drive circuit 304 between no viewing area before the VB be produce corresponding to the viewing area between the data of picture Fn among the VA.In step 904, as shown in Figure 4, buffer 3062 stores the current potential corresponding to black (+) according to the current potential (corresponding to the current potential of black (-)) of data DF; As shown in Figure 5, buffer 3062 stores the current potential corresponding to 128 (+) according to the current potential (corresponding to the current potential of 128 (-)) of data DF.In step 906; When the polarity of the first stroke data DF that source electrode drive circuit 304 is exported after the VB between the polarity of the finishing touch data DL of source electrode drive circuit 304 outputs and no viewing area before the VB between no viewing area was different, the number of time schedule controller 306 generation control signals was the odd number more than or equal to 1.Therefore; Like Fig. 4 and shown in Figure 5; Because the polarity of the first stroke data DF that source electrode drive circuit 304 is exported after the VB between the polarity of not having a finishing touch data DL of source electrode drive circuit 304 outputs before the VB between the viewing area and no viewing area is different, so control signal C1 of time schedule controller 306 generations.In step 908; As shown in Figure 4; Source electrode drive circuit 304 according to the polarity of finishing touch data DL before the VB between the no viewing area of display panel 302, (buffer 3062 is the current potentials according to data DF to be stored in the buffer 3062 current potential corresponding to black (+); Storage is corresponding to the current potential of black (+)) and control signal C1, a data DB produced.Because the polarity of data DL is positive polarity,, the polarity of data DB is current potential corresponding to black (-) so being the current potential of negative polarity and data DB; As shown in Figure 5, source electrode drive circuit 304 according to the polarity of finishing touch data DL before the VB between the no viewing area of display panel 302, result from current potential and the control signal C1 of VB the first stroke data DF afterwards between no viewing area, produce a data DB.Because the polarity of data DL is positive polarity, so the polarity of data DB is that the current potential of negative polarity and data DB is for corresponding to the current potential of 128 (-).In step 910, like Fig. 4 and shown in Figure 5, after control signal C1, because time schedule controller 306 no longer produces control signal up to picture Fn+1, so source electrode drive circuit 304 after control signal C1, does not change data DB.Like Fig. 4 and shown in Figure 5; Because the current potential of data DB is identical with the current potential that does not have the first stroke data DF that source electrode drive circuit 304 is exported after the VB between the viewing area; And the polarity of data DB is also identical with the polarity of not having the first stroke data DF that source electrode drive circuit 304 is exported after the VB between the viewing area, so the common voltage VCOM of display panel 302 can't be coupled downwards (the B point of Fig. 4 and the D point of Fig. 5).In step 912, time schedule controller 306 produces scanning start signal STV, does not wherein have between the viewing area VB and be to be positioned at before scanning start signal STV produces.And source electrode drive circuit 304 is the data that produce corresponding to picture Fn+1 among the VA between the viewing area after scanning start signal STV produces.
Please with reference to Fig. 3, Fig. 6, Fig. 7 and Figure 10, Figure 10 is a kind of process flow diagram that improves the method for image quality of sixth embodiment of the present invention explanation.The method of Figure 10 is to utilize display 300 explanations of Fig. 3, and detailed step is following:
Step 1000: beginning;
Step 1002: produce data corresponding to VA between the viewing area;
Step 1004: the current potential according to the first stroke data DF after the VB between no viewing area stores a current potential in buffer 3062;
Step 1006: according to the polarity of finishing touch data DL before the VB between the no viewing area of display panel 302 and do not have the polarity of the first stroke data DF after the VB between the viewing area, two control signal C1 of VB generation, C2 between no viewing area;
Step 1008: according to polarity, the current potential that is stored in buffer 3062 and the control signal C1 of finishing touch data DL before the VB between the no viewing area of display panel 302; Produce and a synchronous data DB1 of control signal C1; And, after data DB1, produce and a synchronous data DB2 of control signal C2 according to the current potential of polarity, control signal C2 and the data DB1 of data DB1;
Step 1010: after the control signal C2 of VB, source electrode drive circuit 304 does not change data DB2 between no viewing area;
Step 1012: produce one scan start signal STV, rebound step 1002;
In step 1002, source electrode drive circuit 304 between no viewing area before the VB be produce corresponding to the viewing area between the data of picture Fn among the VA.In step 1004, as shown in Figure 6, buffer 3062 stores the current potential corresponding to 128 (+) according to the current potential (corresponding to the current potential of 128 (+)) of data DF; As shown in Figure 7, buffer 3062 stores the current potential corresponding to black (+) according to the current potential (corresponding to the current potential of black (+)) of data DF.In step 1006; When the polarity of the first stroke data DF that source electrode drive circuit 304 is exported after the VB between the polarity of the finishing touch data DL of source electrode drive circuit 304 outputs and no viewing area before the VB between no viewing area was identical, the number of time schedule controller 306 generation control signals was the even number more than or equal to 2.Therefore; Like Fig. 6 and shown in Figure 7; Because the polarity of the first stroke data DF that source electrode drive circuit 304 is exported after the VB between the polarity of not having a finishing touch data DL of source electrode drive circuit 304 outputs before the VB between the viewing area and no viewing area is identical, so two control signal C1 of time schedule controller 306 generations, C2.In step 1008; As shown in Figure 6; Source electrode drive circuit 304 according to the polarity of finishing touch data DL before the VB between the no viewing area of display panel 302, be stored in the buffer 3062 current potentials corresponding to 128 (+) (because buffer 3062 is according to the current potential of data DF; Storage is corresponding to the current potential of 128 (+)) and control signal C1; Produce a data DB1, and, after data DB1, produce a data DB2 (corresponding to the current potential of 128 (+)) according to the current potential of polarity, control signal C2 and the data DB1 of data DB1.As shown in Figure 6 because the polarity of data DL is positive polarity, so the polarity of data DB1 be the current potential of negative polarity and data DB1 for corresponding to the current potential of 128 (-), and the polarity of data DB2 is that the current potential of positive polarity and data DB2 is the current potential corresponding to 128 (+).As shown in Figure 7; Source electrode drive circuit 304 according to the polarity of finishing touch data DL before the VB between the no viewing area of display panel 302, be stored in the buffer 3062 current potentials corresponding to black (+) (because buffer 3062 is according to the current potential of data DF; Storage is corresponding to the current potential of black (+)) and control signal C1; Produce a data DB1, and, after data DB1, produce a data DB2 (corresponding to the current potential of black (+)) according to the current potential of polarity, control signal C2 and the data DB1 of data DB1.As shown in Figure 7, because the polarity of data DL is positive polarity, be current potential, and the polarity of data DB2 is that the current potential of positive polarity and data DB2 is the current potential corresponding to black (+) corresponding to black (-) so the polarity of data DB1 is the current potential of negative polarity and data DB1.In step 1010, like Fig. 6 and shown in Figure 7, after control signal C2, because time schedule controller 306 no longer produces control signal up to picture Fn+1, so source electrode drive circuit 304 after control signal C2, does not change data DB2.Like Fig. 6 and shown in Figure 7; Because the current potential of data DB2 is identical with the current potential that does not have the first stroke data DF that source electrode drive circuit 304 is exported after the VB between the viewing area; And the polarity of data DB2 is also identical with the polarity of not having the first stroke data DF that source electrode drive circuit 304 is exported after the VB between the viewing area, so the common voltage VCOM of display panel 302 can't be coupled downwards (the F point of Fig. 6 and the H point of Fig. 7).In step 1012, time schedule controller 306 produces scanning start signal STV, does not have wherein that VB is before scanning start signal STV produces between the viewing area.And source electrode drive circuit 304 is the data that produce corresponding to picture Fn+1 among the VA between the viewing area after scanning start signal STV produces.
In sum; The method of improving the display of image quality and can improving image quality provided by the present invention is to utilize time schedule controller according to the polarity of finishing touch data before between the no viewing area of display panel and the polarity of the first stroke data after not having between the viewing area; In between no viewing area, produce at least one control signal; Utilize current potential and at least one control signal of the first stroke data of source electrode drive circuit, produce and at least one synchronous data of at least one control signal according to the polarity of finishing touch data before between the no viewing area of display panel, after resulting between no viewing area.Source electrode drive circuit does not change the finishing touch data at least one the data after at least one control signal.Therefore, the existing assembly of the present invention's display capable of using is to improve the image quality of display.
The above is merely preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (18)
1. the method that can improve image quality is characterized in that, comprises:
According to the polarity of the first stroke data after between the polarity of finishing touch data before between the no viewing area of a display panel and this no viewing area, at least one control signal of generation between this no viewing area;
In between this no viewing area; According to current potential and this at least one control signal of the first stroke data after between the polarity of finishing touch data before between the no viewing area of this display panel, this no viewing area, generation and at least one synchronous data of this at least one control signal; And
Produce the one scan start signal;
Wherein after this at least one control signal, do not change the finishing touch data in these at least one data.
2. the method for claim 1 is characterized in that, the current potential of the first stroke data after between the current potential of the finishing touch data of these at least one data and this no viewing area is identical.
3. the method for claim 1 is characterized in that, the polarity of the first stroke data after between the polarity of the finishing touch data in these at least one data and this no viewing area is identical.
4. the method for claim 1 is characterized in that, when afterwards the polarity of the first stroke data was identical between the polarity of finishing touch data and this no viewing area before between this no viewing area, the number of this at least one control signal was an even number.
5. the method for claim 1 is characterized in that, when afterwards the polarity of the first stroke data was different between the polarity of finishing touch data and this no viewing area before between this no viewing area, the number of this at least one control signal was an odd number.
6. the method for claim 1 is characterized in that, is between the no viewing area of this display panel before this scanning start signal produces.
7. the method for claim 1 is characterized in that, between this no viewing area before with this scanning start signal generation after, between a viewing area for this display panel.
8. method as claimed in claim 7 is characterized in that, also comprises:
Before between this no viewing area and after this scanning start signal generation, produce corresponding to the data between this viewing area.
9. the method for claim 1 is characterized in that, also comprises:
Current potential according to the first stroke data after between this no viewing area stores a current potential in a buffer.
10. method as claimed in claim 9; It is characterized in that; Current potential according to the first stroke data after between the polarity of finishing touch data before between the no viewing area of this display panel, this no viewing area reaches this at least one control signal; Produce and at least one synchronous data of this at least one control signal; For according to the polarity of finishing touch data before between the no viewing area of this display panel, this current potential that is stored in this buffer and this at least one control signal, produce and at least one synchronous data of this at least one control signal.
11. the display that can improve image quality is characterized in that, comprises:
One display panel;
Time schedule controller, in order to producing the one scan start signal, and according to the polarity of the first stroke data after between the polarity of finishing touch data before between the no viewing area of a display panel and this no viewing area, at least one control signal of generation between this no viewing area; And
The one source pole driving circuit; Be coupled to this time schedule controller; Current potential in order to according to the first stroke data after between the polarity of finishing touch data before between the no viewing area of this display panel, this no viewing area reaches this at least one control signal; Produce and at least one synchronous data of this at least one control signal, and before between this no viewing area and after this scanning start signal generation, generation is corresponding to the data between a viewing area;
Wherein this source electrode drive circuit does not change the finishing touch data in these at least one data after this at least one control signal.
12. display as claimed in claim 11 is characterized in that, the current potential of the first stroke data after between the current potential of the finishing touch data of these at least one data and this no viewing area is identical.
13. display as claimed in claim 11 is characterized in that, the polarity of the first stroke data after between the polarity of the finishing touch data in these at least one data and this no viewing area is identical.
14. display as claimed in claim 11 is characterized in that, if before between this no viewing area between polarity and this no viewing area of finishing touch data afterwards the polarity of the first stroke data identical, then the number of this at least one control signal is an even number.
15. display as claimed in claim 11 is characterized in that, if before between this no viewing area between polarity and this no viewing area of finishing touch data afterwards the polarity of the first stroke data different, then the number of this at least one control signal is an odd number.
16. display as claimed in claim 11 is characterized in that, is between the no viewing area of this display panel before this scanning start signal produces.
17. display as claimed in claim 11 is characterized in that, between this no viewing area before with this scanning start signal generation after, between this viewing area for this display panel.
18. display as claimed in claim 11 is characterized in that, this time schedule controller comprises in addition:
One buffer, the current potential in order to according to the first stroke data after between this no viewing area stores a current potential.
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| US20060125813A1 (en) * | 2004-12-14 | 2006-06-15 | Innolux Display Corp. | Active matrix liquid crystal display with black-inserting circuit |
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Application publication date: 20120404 |