CN101055708A - Driving method - Google Patents
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- CN101055708A CN101055708A CN 200710102270 CN200710102270A CN101055708A CN 101055708 A CN101055708 A CN 101055708A CN 200710102270 CN200710102270 CN 200710102270 CN 200710102270 A CN200710102270 A CN 200710102270A CN 101055708 A CN101055708 A CN 101055708A
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Abstract
The invention provides a driving method suitable for dirving a display panel which includes a plurality of scanning lines, a plurality of data lines and a plurality of pixel units electrically connected with the scanning lines and the data lines, the driving method comprises: activating the pixel units controlled by the scanning lines in a plurality of continuous picture frame times based on different scanning orders, and inputting video data into the pixel units via the data lines, wherein a capacitance coupling effect between the pixel units is changed along with the different scanning orders. In this way, a phenomenon of line shape stripes due to the capacitance coupling effect is improved.
Description
Technical field
The invention relates to a kind of driving method, and particularly relevant for a kind of driving method of LCD.
Background technology
At improving rapidly of multimedia society, be indebted to the tremendous progress of semiconductor subassembly or man-machine display device mostly.With regard to display, (Cathode Ray Tube CRT) because of having excellent display quality and its economy, monopolizes monitor market in recent years to cathode-ray tube (CRT) always.Yet, operate the environment of most terminating machine/display equipments on the table for the individual, or with the incision of the viewpoint of environmental protection, or predicted with the trend of saving the energy, cathode-ray tube (CRT) is because of still existing a lot of problems in space utilization and the energy resource consumption, and the method for solution can't effectively be provided for the demand of light, thin, short, little and low consumpting power.Therefore, (liquid crystal display LCD) becomes the main flow in market gradually to have the LCD of advantageous characteristic such as high image quality, space utilization efficient are good, low consumpting power, low radiation.
Fig. 1 is the synoptic diagram of existing a kind of driving component array.Please refer to Fig. 1, display panel 10 comprises multi-strip scanning line G1 to Gn, many data line S1 to Sm and has a plurality of pixel cells 2 of driving component 2a.Sweep trace G1 to Gn and data line S1 to Sm electrically connect with the driving component 2a of pixel cell 2, and pixel cell 2 is to drive by sweep trace G1 to Gn and data line S1 to Sm.In more detail, display panel 10 more comprises a plurality of offset buffers (shift register) (not illustrating), and offset buffer can produce the scan control signal that cooperates with data-signal and imports image data to activate pixel cell 2 between in due course.
Fig. 2 is the sequential chart of the driving method of driving component array shown in Figure 1.Please refer to Fig. 2, in during each picture frame time (frame time), scan control signal SR (the G1)～SR (Gn) that inputs to sweep trace G1 to Gn can activate pixel cell 2 in order with identical scanning sequency, for example SR (G1), SR (G2), SR (G3) ... the order of SR (Gn-1), SR (Gn).When using driving method shown in Figure 2 to drive driving component array 10, and corresponding odd-numbered scan lines SR (G1), SR (G3) ... the pixel cell controlled 2 and even-line interlace line SR (G2), SR (G4) ... the pixel cell of being controlled 2 can produce when having the inconsistent situation of charge condition, then has wire striped (linemura) on the direction of panel data line S1 to Sm.For example, when scan control signal SR (G1) inputed to sweep trace G1, the pixel cell 2 that is connected with sweep trace G1 and data line S1 can be transfused to an image data; When scan control signal SR (G2) inputs to sweep trace G2, the pixel cell 2 that is connected with sweep trace G2 and data line S1 can be transfused to another image data, at this moment, the image data that is write down in the pixel cell 2 in data line S1 left side can be subjected to the influence (being capacitance coupling effect) of another image data of being write down in the pixel cell 2 on data line S1 right side, and causes brightness irregularities.Therefore, there is it need slow down the influence of capacitance coupling effect.
Summary of the invention
The invention provides a kind of driving method, it can improve the phenomenon of the wire striped of display panel.
The present invention proposes a kind of driving method, be suitable for driving display panel, display panel comprises multi-strip scanning line, many data lines and pixel cell a plurality of and sweep trace and data line electric connection, and this driving method is included in a plurality of continuous picture frames in the time, follow different scanning sequencies to activate the pixel cell that sweep trace is controlled, and by data line image data is inputed in the pixel cell, wherein the capacitance coupling effect between the pixel cell changes along with different scanning sequencies.
In one embodiment of this invention, above-mentioned scanning sequency comprises m kind scanning sequency, and the continuous picture frame time comprises that (m * k) individual picture frame time, and m, k are positive integer.
In one embodiment of this invention, above-mentioned driving method, wherein m=2.
In one embodiment of this invention, above-mentioned pixel cell is divided into a plurality of demonstration blocks, and shows that block is made of the pixel cell that many adjacent sweep traces are controlled.
In one embodiment of this invention, above-mentioned scanning sequency is included in 2k picture frame one of them picture frame in the time in the time, follow first scanning sequency to activate the pixel cell that shows in the block, and at 2k picture frame all the other picture frames in the time in the time, follow second scanning sequency to activate the pixel cell that shows in the block, wherein second scanning sequency is opposite with first scanning sequency.
In one embodiment of this invention, above-mentioned driving method, wherein m=3.
In one embodiment of this invention, above-mentioned pixel cell is divided into a plurality of demonstration blocks, and shows that block is made of the pixel cell that many adjacent sweep traces are controlled.
In one embodiment of this invention, above-mentioned scanning sequency comprises: in the part picture frame time in the time, follow first scanning sequency to activate the pixel cell that shows in the block at 3k picture frame; In another part picture frame time in time, follow second scanning sequency to activate the pixel cell that shows in the block at 3k picture frame; And at 3k picture frame all the other picture frames in the time in the time, follow the 3rd scanning sequency to activate the pixel cell that shows in the block, wherein first scanning sequency, second scanning sequency and the 3rd scanning sequency are different.
In one embodiment of this invention, the above-mentioned data line that passes through comprises an inversion driving (dot inversion driving), line inversion driving (line inversiondriving) or picture frame inversion driving (frame inversion driving) with the method that image data inputs in the pixel cell.
The present invention activates pixel cell with different orders at a plurality of continuous picture frames in the time, by this with between the pixel cell because of capacitance coupling effect causes the phenomenon of brightness irregularities average, to improve the phenomenon of the wire striped that brightness irregularities caused.
For above-mentioned feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and cooperate appended Figure of description, be described in detail below.
Description of drawings
Fig. 1 is the synoptic diagram of existing a kind of driving component array.
Fig. 2 is the sequential chart of the driving method of driving component array shown in Figure 1.
Fig. 3 A is a kind of display panel according to first embodiment of the invention.
Fig. 3 B is the sequential chart of the driving method of display panel shown in Fig. 3 A.
Fig. 3 C is a kind of display panel according to another embodiment of the present invention.
Fig. 4 is the sequential chart according to a kind of driving method of second embodiment of the invention.
Fig. 5 A is a kind of display panel according to third embodiment of the invention.
Fig. 5 B is the sequential chart of the driving method of display panel shown in Fig. 5 A.
Drawing reference numeral:
2: pixel cell
2a: driving component
4: show block
10,10 ', 10 ", 10 : display panel
G1, G2, G3, G4, G5, G6, G2n-1, G2n, G3n-2, G3n-1, G3n: sweep trace
S1, S2, S3, Sm: data line
SR1 (G1), SR1 (G2), SR1 (G3), SR1 (G4), SR1 (G2n-1), SR1 (G2n), SR1 ' (G1), SR1 ' (G2), SR1 ' (G3), SR1 ' (G4), SR1 ' (G2n-1), SR1 ' (G2n), SR2 (G1), SR2 (G2), SR2 (G3), SR2 (G4), SR2 (G5), SR2 (G6), SR2 (G3n-2), SR2 (G3n-1), SR2 (G3n): scan control signal
Embodiment
Embodiment one:
Fig. 3 A is a kind of display panel according to first embodiment of the invention, and Fig. 3 B is the sequential chart of scan control signal SR1 (G1)～SR1 (G2n) of illustrating first embodiment of the invention.Please refer to Fig. 3 A and Fig. 3 B, display panel 10 ' comprises multi-strip scanning line G1 to G2n, many data line S1 to Sm and has a plurality of pixel cells 2 of driving component 2a that wherein n and m are positive integer.Sweep trace G1 to G2n and data line S1 to Sm electrically connect with the driving component 2a of pixel cell 2.In the present embodiment, all pixel cells 2 can be divided into a plurality of demonstration blocks 4, each shows that block 4 is made of the pixel cell 2 that 2 adjacent sweep traces are controlled, and show that at each the pixel cell 2 in the block 4 is to drive by corresponding scanning line G1 to G2n and corresponding data line S1 to Sm, wherein scan control signal SR1 (G1)～SR1 (G2n) can input to sweep trace G1 to G2n respectively and activate the pixel cell 2 that corresponding scanning line G1 to G2n is controlled.
In the present embodiment, the rising edge (rising edge) of scan control signal SR1 (G1)～SR1 (G2n) can activate the pixel cell 2 that (enable) sweep trace G1 to G2n is controlled, and the falling edge (falling edge) of scan control signal SR1 (G1)～SR1 (G2n) can be closed the pixel cell 2 that (disable) sweep trace G1 to G2n is controlled.Yet, in other embodiments of the invention, also can activate pixel cell 2, and close pixel cell 2 by the rising edge of scan control signal SR1 (G1)～SR1 (G2n) by the falling edge of scan control signal SR1 (G1)～SR1 (G2n).In more detail, in embodiments of the present invention, the activation signal (rising edge and falling edge) of scan control signal SR1 (G1)～SR1 (G2n) can cooperate data line S1 to Sm transmitted data-signal (not illustrating) so that image data is inputed in the pixel cell 2.In one embodiment of this invention, for example be an inversion driving (dot inversion), line inversion driving (lineinversion) or picture frame inversion driving (Frame inversion) etc. by data line S1 to Sm with the method that image data inputs in the pixel cell 2.
Shown in Fig. 3 B, in first picture frame, the activation signal of scan control signal SR1 (G1)～SR1 (G2n) can activate in order sweep trace G1, G2, G3, G4 ..., each row pixel cell 2 that G2n-1, G2n controlled.Then, in second picture frame, the activation signal of scan control signal SR1 (G1)～SR1 (G2n) can activate in order sweep trace G2, G1, G4, G3 ... each row pixel cell 2 that G2n, G2n-1 controlled.In other words, in first picture frame, the pixel cell 2 that odd-numbered scan lines is controlled in the same demonstration block 4 can be activated earlier, the pixel cell 2 controlled of even-line interlace line just is activated then, and in second picture frame, the pixel cell 2 that the even-line interlace line is controlled in the same demonstration block 4 can be activated earlier, and the pixel cell 2 controlled of odd-numbered scan lines just is activated then.
In addition, the activation sequence of pixel cell 2 can be identical with the activation sequence of pixel cell 2 in first picture frame in the 3rd picture frame, and the activation sequence of pixel cell 2 can be identical with the activation sequence of pixel cell 2 in second picture frame in the 4th picture frame.According to the embodiment of the invention, when scanning sequency comprised m kind scanning sequency, the then continuous picture frame time (being the scan period) can be set at (individual picture frame time of m * k), and m, k are positive integer.
In the present embodiment, above-mentioned driving method is not limited in and is used for driving the described display panel of Fig. 3 A, and driving method of the present invention also can be used to drive the display panel of other kenel, the display panel 10 shown in Fig. 3 C ".
According to the embodiment of the invention, the activation signal of scan control signal SR1 (G1)～SR1 (G2n) can follow different scanning sequencies to activate the pixel cell that each sweep trace is controlled at a plurality of continuous picture frames in the time.Therefore, the capacitance coupling effect between the pixel cell can change to some extent along with different scanning sequencies, makes display panel be difficult for taking place the wire striped.
Embodiment two:
Fig. 4 is the sequential chart according to a kind of driving method of second embodiment of the invention.Please refer to shown in Figure 4ly, in the present embodiment, the scan period is set at 4 picture frame times.In first picture frame and second picture frame, scan control signal SR1 ' (G1)～SR1 ' activation signal (G2n) can activate in order sweep trace G1, G2, G3, G4 ..., each row pixel cell 2 that G2n-1, G2n controlled, and in the 3rd picture frame and the 4th picture frame, scan control signal SR1 ' (G1)～SR1 ' activation signal (G2n) can activate in order sweep trace G2, G1, G4, G3 ..., each row pixel cell 2 that G2n, G2n-1 controlled.
In the present embodiment, each shows that block 4 is made of the pixel cell 2 that 2 adjacent sweep traces are controlled.In first picture frame and second picture frame, the pixel cell 2 that odd-numbered scan lines is controlled in the same demonstration block 4 can be activated earlier, the pixel cell 2 controlled of even-line interlace line just is activated then, and in the 3rd picture frame and the 4th picture frame, the pixel cell 2 that the even-line interlace line is controlled in the same demonstration block 4 can be activated earlier, and the pixel cell 2 controlled of odd-numbered scan lines just is activated then.
What deserves to be mentioned is, though first embodiment and second embodiment are the scan period to activate pixel cell 2 with 2 picture frame times and 4 picture frame times respectively only, but it must be appreciated that the scan period can be designed to the picture frame time of 2 multiple, for example 2,4, a 6... picture frame time.Similarly, the described driving method of present embodiment also can be in order to drive the display panel 10 ' or 10 shown in Fig. 3 A or Fig. 3 C ".
Embodiment three:
Fig. 5 A is a kind of display panel according to third embodiment of the invention, and Fig. 5 B is the sequential chart of the driving method of display panel shown in Fig. 5 A.In first embodiment and second embodiment, show that block 4 is made of the pixel cell 2 that 2 adjacent sweep traces are controlled.Yet present embodiment can be that pixel cell 2 by 3 adjacent sweep traces are controlled is constituted with showing that block 4 be set for also, shown in Fig. 5 A.Below will arrange in pairs or groups Fig. 5 A and Fig. 5 B is described in detail.
Please refer to Fig. 5 B, in first picture frame, the activation signal of scan control signal SR2 (G1)～SR2 (G3n) can activate sweep trace G1 in order, G2, G3, G4, G5, G6, ..., G3n-2, G3n-1, each row pixel cell 2 that G3n controlled, and in second picture frame, the activation signal of scan control signal SR2 (G1)～SR2 (G3n) can activate sweep trace G3 in order, G1, G2, G6, G4, G5, ..., G3n, G3n-2, G3n-1 controls the pixel cell 2 of each row, and in the 3rd picture frame, the activation signal of scan control signal SR2 (G1)～SR2 (G3n) can activate sweep trace G2 in order, G3, G1, G5, G6, G4, ..., G3n-1, G3n, each row pixel cell 2 that G3n-2 controlled.Just, in first picture frame, second picture frame and the 3rd picture frame, the activation sequence of each row pixel cell is different.
In addition, the activation sequence of pixel cell 2 can be identical with the activation sequence of pixel cell 2 in first picture frame in the 4th picture frame, the activation sequence of pixel cell 2 can be identical with the activation sequence of pixel cell 2 in second picture frame in the 5th picture frame, and the activation sequence of pixel cell 2 can be identical with the activation sequence of pixel cell 2 in the 3rd picture frame in the 6th picture frame.Yet, in each scan period, the order that each row pixel is activated is not limited in the described combination of present embodiment, and the permutation and combination of other kind activation sequence also should drop in the category that the present invention contains.
What deserves to be mentioned is,, it must be appreciated that the scan period can be designed to the picture frame time of 3 multiple, for example 3,6, a 9... picture frame time though present embodiment is the scan period to drive pixel cell 2 with 3 picture frame times only.
Though above-mentioned first, second and the 3rd embodiment are to serve as to show block with the pixel cell that 2 and 3 sweep traces are controlled, yet, it must be appreciated to the invention is not restricted to this.And when the pixel cell of being controlled with x bar sweep trace serves as that then the scan period can be designed to x * y picture frame time when showing block, wherein x and y are that positive integer and x are greater than 1.
In sum, the present invention activates pixel cell with different orders at a plurality of continuous picture frames in the time, by this with between the pixel cell because of capacitance coupling effect causes the phenomenon of brightness irregularities average, to improve the phenomenon of the wire striped that brightness irregularities caused.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; have in the technical field under any and know the knowledgeable usually; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the claim person of defining.
Claims (9)
1. a driving method is suitable for driving a display panel, and this display panel comprises the pixel cell that multi-strip scanning line, many data lines and a plurality of and described sweep trace and described data line electrically connect, and it is characterized in that described driving method comprises:
At a plurality of continuous picture frames in the time, follow different scanning sequencies to activate the described pixel cell that each described sweep trace is controlled, and by described data line one image data is inputed in the described pixel cell, the capacitance coupling effect between the wherein said pixel cell changes along with different scanning sequencies.
2. as 1 described driving method of claim the, it is characterized in that described scanning sequency comprises m kind scanning sequency, and the described continuous picture frame time comprises that (m * k) individual picture frame time, and m, k are positive integer.
3. as 2 described driving methods of claim the, it is characterized in that described m=2.
4. as 3 described driving methods of claim the, it is characterized in that described pixel cell is divided into a plurality of demonstration blocks, and shows that respectively block is made of the pixel cell that many adjacent sweep traces are controlled.
5. as 4 described driving methods of claim the, it is characterized in that described scanning sequency comprises:
In time, follow one first scanning sequency to activate the described pixel cell that respectively shows in the block at 2k picture frame one of them picture frame in the time; And
In time, follow one second scanning sequency to activate the described pixel cell that respectively shows in the block at 2k picture frame all the other picture frames in the time, wherein said second scanning sequency is opposite with described first scanning sequency.
6. as 2 described driving methods of claim the, it is characterized in that described m=3.
7. as 6 described driving methods of claim the, it is characterized in that described pixel cell is divided into a plurality of demonstration blocks, and shows that respectively block is made of the pixel cell that many adjacent sweep traces are controlled.
8. as 7 described driving methods of claim the, it is characterized in that described scanning sequency comprises:
In the part picture frame time in time, follow one first scanning sequency to activate the described pixel cell that respectively shows in the block at 3k picture frame;
In another part picture frame time in time, follow one second scanning sequency to activate the described pixel cell that respectively shows in the block at 3k picture frame; And
In time, follow one the 3rd scanning sequency to activate the described pixel cell that respectively shows in the block at 3k picture frame all the other picture frames in the time, wherein said first scanning sequency, described second scanning sequency and described the 3rd scanning sequency are different.
9. as 1 described driving method of claim the, it is characterized in that, the method that described image data inputs in the described pixel cell is comprised an inversion driving, line inversion driving or picture frame inversion driving by described data line.
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| CNB2007101022703A CN100498921C (en) | 2007-05-09 | 2007-05-09 | Driving method |
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| CN107507600B (en) * | 2017-10-18 | 2020-03-06 | 京东方科技集团股份有限公司 | Display device, pixel circuit, driving method thereof and driving device |
| US11393420B2 (en) | 2017-10-18 | 2022-07-19 | Hefei Boe Optoelectronics Technology Co., Ltd. | Display device, pixel circuit and its driving method and driving device |
| CN109741704A (en) * | 2018-06-29 | 2019-05-10 | 厦门天马微电子有限公司 | A kind of display panel, its driving method, driving device and display device |
| CN111477191A (en) * | 2020-05-14 | 2020-07-31 | 深圳市华星光电半导体显示技术有限公司 | Display brightness improving method, time sequence controller and storage medium |
| WO2022036847A1 (en) * | 2020-08-19 | 2022-02-24 | 惠科股份有限公司 | Display device and driving method thereof |
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