CN102280083A - Display capable of improving image quality and method thereof - Google Patents
Display capable of improving image quality and method thereof Download PDFInfo
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- CN102280083A CN102280083A CN2011102473097A CN201110247309A CN102280083A CN 102280083 A CN102280083 A CN 102280083A CN 2011102473097 A CN2011102473097 A CN 2011102473097A CN 201110247309 A CN201110247309 A CN 201110247309A CN 102280083 A CN102280083 A CN 102280083A
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Abstract
A method of improving an image quality comprises the following steps that: before a STV is generated, a blank time of a display panel receives an external data enable signal; a TCON processes the external data enable signal and generates an internal data enable signal; a source driving circuit outputs plural data according to the internal data enable signal, wherein a polarity of at least one data before the STV is generated is the same with the polarity of a first data after the STV is generated.
Description
Technical field
The invention relates to a kind of display and method thereof of improving image quality, especially refer to that a kind of polarity of source electrode drive circuit data of output before and after the scanning start signal of utilizing is identical, to improve the display and the method thereof of the image quality of display panel between the viewing area.
Background technology
Please refer to Fig. 1, Fig. 1 for prior art explanation when display panel 102 frame update, the synoptic diagram of bright band appears in display panel 102 tops.Existing display panel 102 is the modes that adopt high open design and compensating movement, with transmitance that improves display panel 102 and the cross-talk phenomenon (cross talk) of improving display panel 102, but the mode of the high open design of display panel 102 and compensating movement can cause display panel 102 capacitances own to become big.Therefore, as shown in Figure 1, when display panel 102 frame update,, cause display panel 102 tops bright band to occur because the common voltage of the first row pixel of display panel 102 is subjected to the influence of video data polarity.
Please refer to Fig. 2, Fig. 2 is prior art explanation (active time) V between the viewing area of display panel
AAnd (blank time) V between the clear area
B, scanning start signal STV, the output data data of source electrode drive circuit and the synoptic diagram of common voltage Vcom.As shown in Figure 2, the time schedule controller of display panel (TCON) V between the clear area
BThe time, the output data that can control source electrode drive circuit is kept the finishing touch data of previous picture.When source electrode drive circuit was exported the first stroke data of next picture, polarity just can change.Therefore, V between the viewing area
AAnd V between the clear area
BThe junction may be because of V between the clear area
BThe finishing touch data and the viewing area between V
AThe voltage difference excessive (dashed rectangle of Fig. 2) of the first stroke data, the influence that causes common voltage Vcom to be subjected to the voltage coupling of data produces bigger change (tip in the broken circle frame of Fig. 2).
Please refer to Fig. 3, Fig. 3 is the synoptic diagram of a plurality of pixel cells in the explanation display panel.As shown in Figure 3, there is stray capacitance CSK between source electrode line 302 and the common pressure-wire (common Line) 304, when the polarity transformation of data voltage on the source electrode line 302, the coupling that data voltage can see through stray capacitance CSK on the source electrode line 302 influence the voltage on the common voltage line 304.Therefore, if thin film transistor (TFT) 306 is according to the signal at stop on the gate line 308, and the voltage quasi position on the common voltage line 304 does not return back to the accurate position of dc voltage value of common voltage Vcom as yet, and then the stored voltage of storage capacitors CS can be affected, and causes the brightness instability of pixel.In addition because under the design factor that improves the display panel transmitance, the capacitance of stray capacitance CSK can become greatly, so the required time of direct current quasi-position that returns back to common voltage Vcom by the voltage quasi position on the common voltage line 304 can be elongated.Therefore, the polarity of data voltage is when next picture switches on the source electrode line 302, and common voltage Vcom is subjected to coupled effect and can't replys immediately, causes the tip value of common voltage Vcom of Fig. 2 bigger.
Summary of the invention
One embodiment of the invention provide 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 produces the one scan start signal, between one clear area of the display panel before this scanning start signal produces, to receive an external data activation (data enable) signal, this time schedule controller processes this external data enable signal, produces an internal data enable signal; This source electrode drive circuit is exported the complex data according to this internal data enable signal; Wherein the polarity of at least one data before this scanning start signal produces is identical with the polarity that this scans the first stroke data after start signal produces.
Another embodiment of the present invention provides a kind of method of improving image quality.This method is contained in the one scan start signal and produces between a clear area of a display panel before, receives an external data enable signal; Time schedule controller processes this external data enable signal, produces an internal data enable signal; According to this internal data enable signal, output complex data, wherein the polarity of at least one data before this scanning start signal produces is identical with the polarity that this scans the first stroke data after start signal produces.
The invention provides a kind of display and method thereof of improving image quality.This display and method thereof are to utilize between a clear area of the display panel of time schedule controller before the one scan start signal produces, and receive an external data enable signal, and this external data enable signal is processed, and produce an internal data enable signal.Then, the one source pole driving circuit is exported the complex data according to a data actuating signal; Wherein the polarity of at least one data before this scanning start signal produces is identical with the polarity that this scans the first stroke data after start signal produces.So, this display panel can scan the common voltage polarity of these the first stroke data after start signal corresponding to this according to the common voltage polarity of the first row pixel of this display panel this at least one the data before corresponding to this scanning start signal and this first row pixel, to improve the image quality of this display panel between a viewing area.
Description of drawings
Fig. 1 for prior art explanation when the display panel frame update, the synoptic diagram of bright band appears above the display panel.
Fig. 2 illustrates between the viewing area of display panel and between the clear area for prior art, scanning start signal, the output data of source electrode drive circuit and the synoptic diagram of common voltage.
Fig. 3 is the synoptic diagram of a plurality of pixel cells in the explanation display panel.
Fig. 4 is a kind of synoptic diagram that improves the display of image quality of one embodiment of the invention explanation.
Fig. 5 is explanation external data enable signal, internal data enable signal, scanning start signal, the data of source electrode drive circuit output before and after the scanning start signal and the sequential synoptic diagram of data.
Fig. 6 is the data and the common voltage polarity synoptic diagram of explanation scanning start signal, source electrode drive circuit output before and after the scanning start signal.
Fig. 7 is a kind of process flow diagram that improves the method for image quality of another embodiment of the present invention explanation.
Embodiment
Please refer to Fig. 4 and Fig. 5, Fig. 4 improves the display 400 of image quality for one embodiment of the invention explanation is a kind of synoptic diagram and Fig. 5 are explanation external data enable signal EDES, internal data enable signal DES, scanning start signal STV, data DL, the D1 of source electrode drive circuit 406 output before and after scanning start signal STV and the sequential synoptic diagram of data DL, D1.As shown in Figure 4, display 400 comprises a display panel 402, time schedule controller 404 and one source pole driving circuit 406.As shown in Figure 4 and Figure 5, time schedule controller 404 produces one scan start signal STV, and V between a clear area of the display panel 402 before scanning start signal STV produces
B, receive an external data enable signal EDES, and external data enable signal EDES is processed via time schedule controller 404, produce an internal data enable signal DES, that is data actuating signal DES is the scanning start signal STV that leads over display panel 402.Source electrode drive circuit 406 is according to data actuating signal DES, output complex data are to display panel 402, and wherein the polarity of a data DL being exported before scanning start signal STV produces of source electrode drive circuit 406 and scanning start signal STV produce the polarity standard identical (shown in the polarity inversion signal POL of Fig. 5) of the first stroke data D1 that is exported the back.But it is identical with the polarity that scanning start signal STV produces the first stroke data D1 that is exported the back in the polarity that scans a data DL who is exported before start signal STV produces that the present invention is not limited to source electrode drive circuit 406, that is source electrode drive circuit 406 is identical with the polarity that scanning start signal STV produces the first stroke data D1 that is exported the back in the polarity that scans at least one the data of being exported before start signal STV produces, and promptly falls into category of the present invention.The gate driver circuit 408 that display 400 comprises in addition can be opened a plurality of pixels that display panel 402 is comprised by row according to scanning start signal STV, therefore, a plurality of pixels that display panel 402 is comprised can show the image of complex data representative according to the complex data.That is after scanning start signal STV V between a viewing area of display panel 402
AIn addition, between two continuous sweep start signals, comprise between a viewing area and between a clear area.
Please refer to Fig. 6, Fig. 6 is data DL, D1 and the common voltage Vcom synoptic diagram of explanation scanning start signal STV, source electrode drive circuit 406 output before and after scanning start signal STV.As shown in Figure 6, because the polarity of the first stroke data D1 that is exported after the polarity of the data DL that source electrode drive circuit 406 is exported before scanning start signal STV produces and the scanning start signal STV generation is identical, so the first row pixel in a plurality of pixels of display panel 402 is to be comparable to the common voltage (Fig. 6 circled) of the first row pixel corresponding to the first stroke data D1 corresponding to the common voltage of data DL.But the present invention is not limited to display panel 402 according to scanning start signal STV, and since the scanning of the first row pixel, that is display panel 402 also can begin scanning from last row pixel according to scanning start signal STV.If display panel 402 is to begin scanning from last row pixel, then last row pixel in a plurality of pixels of display panel 402 is to be comparable to the common voltage of last row pixel corresponding to the first stroke data D1 corresponding to the common voltage of data DL.Therefore, display panel 402 can be according to the first row pixel corresponding to the common voltage of data DL and the first row pixel common voltage corresponding to the first stroke data D1, to improve display panel 402 V between the viewing area
AImage quality (that is display panel 102 tops bright band can not occur).
Please refer to Fig. 7, Fig. 7 is a kind of process flow diagram that improves the method for image quality of another embodiment of the present invention explanation.The method of Fig. 7 is to utilize display 400 explanations of Fig. 4, and detailed step is as follows:
Step 700: beginning;
Step 702: V between the clear area of the display panel 402 of time schedule controller 404 before scanning start signal STV produces
B, receive external data enable signal EDES;
Step 704: time schedule controller 404 processes external data enable signal EDES, produces internal data enable signal DES;
Step 706: source electrode drive circuit 406 is exported the complex data according to data actuating signal DES;
Step 708: time schedule controller 404 produces scanning start signal STV, skips to step 702.
Please refer to Fig. 5 and Fig. 6.In step 704,, produce internal data enable signal DES, so internal data enable signal DES is the scanning start signal STV that leads over display panel 402 because time schedule controller 404 is that external data enable signal EDES is processed.Also real-time sequence controller 404 V between the clear area of display panel 402
B, produce data actuating signal DES.In step 706, source electrode drive circuit 406 is according to internal data enable signal DES, output complex data are to display panel 402, and wherein source electrode drive circuit 406 is identical with the polarity that scanning start signal STV produces the first stroke data D1 that is exported the back in the polarity that scans a data DL who is exported before start signal STV produces.But in the present invention,, promptly fall into category of the present invention before scanning start signal STV produces as long as the polarity of at least one the data that source electrode drive circuit 406 is exported is identical with the polarity that scanning start signal STV produces the first stroke data D1 that is exported the back.In step 708, the gate driver circuit 408 of display 400 can be opened a plurality of pixels that display panel 402 is comprised by row according to scanning start signal STV, therefore, a plurality of pixels that display panel 402 is comprised can be according to the complex data, the image that shows complex data representative, that is be V between the viewing area of display panel 402 after scanning start signal STV
AAs shown in Figure 6, because the polarity of the first stroke data D1 that is exported after the polarity of the data DL that source electrode drive circuit 406 is exported before scanning start signal STV produces and the scanning start signal STV generation is identical, so the first row pixel in a plurality of pixels of display panel 402 is to be comparable to the common voltage of the first row pixel corresponding to the first stroke data D1 corresponding to the common voltage of data DL.Therefore, display panel 402 can be according to the first row pixel corresponding to the common voltage of data DL and the first row pixel common voltage corresponding to the first stroke data D1, to improve display panel 402 V between the viewing area
AImage quality (that is display panel 102 tops bright band can not occur).
In sum, display and the method thereof of improving image quality provided by the present invention, be to utilize between the clear area of the display panel of time schedule controller before the scanning start signal produces, receive the external data enable signal, via time schedule controller the external data enable signal is processed, produce the internal data enable signal.Then, source electrode drive circuit is exported the complex data according to the internal data enable signal; Wherein the polarity of at least one data before the scanning start signal produces is identical with the polarity that scans the first stroke data after start signal produces.So, display panel can be according to the common voltage polarity of the common voltage polarity of the first row pixel of display panel at least one data before corresponding to the scanning start signal and the first row pixel the first stroke data after corresponding to the scanning start signal, to improve the image quality of display panel between the viewing area.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.
Claims (10)
1. the display that can improve image quality is characterized in that, comprises:
One display panel;
Time schedule controller, produce the one scan start signal, between one clear area of this display panel before this scanning start signal produces (blanking time), receive an external data activation (data enable) signal, via this time schedule controller this external data enable signal is processed, produce an internal data enable signal; And
The one source pole driving circuit, according to this internal data enable signal, output complex data;
Wherein the polarity of at least one data before this scanning start signal produces is identical with the polarity that this scans the first stroke data after start signal produces.
2. display as claimed in claim 1 is characterized in that, this data actuating signal is this scanning start signal of leading over this display panel.
3. display as claimed in claim 1 is characterized in that, is between a viewing area of this display panel (active time) after this scanning start signal produces.
4. the method that can improve image quality is characterized in that, comprises:
Between one clear area of the display panel before the one scan start signal produces, receive an external data enable signal;
Time schedule controller processes this external data enable signal, produces an internal data enable signal; And
According to this internal data enable signal, output complex data, wherein the polarity of at least one data before this scanning start signal produces is identical with the polarity that this scans the first stroke data after start signal produces.
5. method as claimed in claim 4 is characterized in that, also comprises to produce this scanning start signal.
6. method as claimed in claim 5 is characterized in that, produces this scanning start signal, for this time schedule controller produces this scanning start signal.
7. method as claimed in claim 4 is characterized in that, after the external data enable signal deals with, produces an internal data enable signal, for after this time schedule controller deals with this external data enable signal, produces this internal data enable signal.
8. method as claimed in claim 4 is characterized in that, comprises that also according to this internal data enable signal, the one source pole driver is exported this complex data.
9. method as claimed in claim 4 is characterized in that, this internal data enable signal is this scanning start signal of leading over this display panel.
10. method as claimed in claim 4 is characterized in that, is between a viewing area of this display panel after this scanning start signal produces.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102473097A CN102280083A (en) | 2011-08-24 | 2011-08-24 | Display capable of improving image quality and method thereof |
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| CN2011102473097A CN102280083A (en) | 2011-08-24 | 2011-08-24 | Display capable of improving image quality and method thereof |
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| WO2021253486A1 (en) * | 2020-06-16 | 2021-12-23 | 厦门天马微电子有限公司 | Display apparatus |
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Application publication date: 20111214 |