CN101533597B - Driving method of scanning line of plane monitor - Google Patents
Driving method of scanning line of plane monitor Download PDFInfo
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- CN101533597B CN101533597B CN2009101066062A CN200910106606A CN101533597B CN 101533597 B CN101533597 B CN 101533597B CN 2009101066062 A CN2009101066062 A CN 2009101066062A CN 200910106606 A CN200910106606 A CN 200910106606A CN 101533597 B CN101533597 B CN 101533597B
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Abstract
The invention is suitable for the technical field of plane monitor, providing a driving method of scanning line of the plane monitor. The method comprises the following steps: generating a gate frequency signal having a first group frequency and a second group frequency; generating a gate initiating signal having two pulse waves; orderly generating the multiple gate signals for controlling multiple scanning lines according to the gate frequency signal and the gate initiating signal; each gate signal has two pulse waves; covering the first gate signal for the pulse waves among the first group frequencies according to the enabling signals and outputs the gate signal at the pulse wave of the second group frequency; and starting the two scanning lines from the multiple scanning lines according to the multiple gate signals. The driving method of the invention can shorten the time of the scanning and the charging, reducing the mixed color among the colors and increasing the color saturation and the color saturation, enhancing the image definition.
Description
Technical field
The invention belongs to the flat-panel screens technical field, a kind of driving method of sweep trace of flat-panel screens is provided.
Background technology
Please refer to Fig. 1, Fig. 1 is the synoptic diagram of the flat-panel screens of prior art.Flat-panel screens 10 comprises a gate pole driver 12, one source pole driver 14 and a display panel 16.Flat-panel screens is active-matrix formula flat-panel screens (AMLCD), organic light emitting diode display (OLED) or plasma display panel (PDP).Display panel 16 comprises a plurality of pixels 18, a plurality of pixels 18 by multi-strip scanning line (scan line) G1, G2 ..., GM is electrically connected at gate pole driver, a plurality of pixels 18 by many data lines (data line) S1, S2 ..., SN electrically connects source electrode driver.Multi-strip scanning line and many data lines intersect electric connection, open pixel 18 by sweep trace, and data line input data current potential.
Please refer to Fig. 2, Fig. 2 is the waveform synoptic diagram of control signal of the gate pole driver 12 of prior art.The control of gate pole driver 12 is the delivery channels that by gate frequency signal CPV gate commencing signal STV transmitted and outputs to each gate pole driver 12 in proper order.Commencing signal (STV) is passed output channel sternward in regular turn in gate pole driver 12, once open a sweep trace, cooperates the signal of source electrode driver 14 simultaneously, to reach the demonstration of picture.Can cover output by output enable signal OE before each sweep trace output pulse wave, to avoid reciprocal effect (Crosstalk).
General flat-panel screens is carried out scanning of 60 complete display frames 10 p.s.s, and all can carry out at a certain sweep trace each time.The source electrode driver 14 of flat-panel screens 10 can come the output of determination data line respectively according to online 18 other video picture characteristics of each pixel of the scanning that a certain quilt chosen, other sweep trace of not chosen then maintains under the state that is not activated, and also therefore image data can once be written into all online pixels 18 of scanning of being chosen.Above-mentioned process can constantly repeat so that follow-up sweep trace is shown corresponding icon.The flat-panel screens 10 of prior art can only drive a sweep trace simultaneously, and can't drive two or more s' sweep trace simultaneously.
When gate pole driver 12 carries out above-mentioned when scanning action, not only must have sufficient time to allow the electric capacity charge or discharge of pixel 18, simultaneously also must allow source electrode driver 14 have sufficient time to output data, if before data line is finished the output of data, the words that sweep trace promptly is activated apace, it is then unexpected that the image value will write the electric capacity of pixel 18, causes flat-panel screens 10 shown pictures the situation of decay to occur.Another kind of similarly situation then is when having insufficient time to electric capacity to pixel 18 and charge, and can cause the electric capacity undercharge of pixel 18, and makes the situation that picture similarly can occur decaying.Therefore, to be sent to the sequential of the signal of data line and sweep trace be very important to 14 controls of gate pole driver 12 and source electrode driver.Along with resolution constantly increases, the number of sweep trace and data line is also more and more many, the same time must mean allocation be done the action that scans to more sweep trace, thus the time that sweep trace is opened shorten, and data line also shortened time of the electric capacity charging of pixel 18.
Summary of the invention
The object of the present invention is to provide a kind of driving method of sweep trace of flat-panel screens, long sweep time with the picture that solves prior art, the problem of decay appears in the shown picture of flat-panel screens.
The present invention is achieved in that a kind of driving method of sweep trace of flat-panel screens, said method comprising the steps of:
Produce a gate frequency signal with one first class frequency and one second class frequency;
Generation one has the gate commencing signal of two pulse waves;
According to described gate frequency signal and described gate commencing signal, produce a plurality of gate signals that are used for controlling the multi-strip scanning line in regular turn, each gate signal has two pulse waves;
Cover the pulse wave of each gate signal during described first class frequency according to an output enable signal, and export the pulse wave of each gate signal during described second class frequency;
During same, open two sweep traces in the described multi-strip scanning line according to described a plurality of gate signals.
In the present invention, provide a kind of driving method of sweep trace of flat-panel screens, can shorten the time of picture element scan and charging, reduce the colour mixture between each color, increasing colour saturation and look even, improves the sharpness of picture.
Description of drawings
Fig. 1 is the structural representation of the flat-panel screens that provides of prior art;
Fig. 2 is the waveform synoptic diagram of the control signal of the gate pole driver that provides of prior art;
Fig. 3 is the waveform synoptic diagram of first embodiment of the control signal of the gate pole driver that provides of the embodiment of the invention;
Fig. 4 is the structural representation of the flat-panel screens of the required cooperation of Fig. 3;
Fig. 5 is the waveform synoptic diagram of second embodiment of the control signal of gate pole driver provided by the invention;
Fig. 6 is the waveform synoptic diagram of the 3rd embodiment of the control signal of gate pole driver provided by the invention;
Fig. 7 is the structural representation of the flat-panel screens of the required cooperation of Fig. 6.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In embodiments of the present invention, proposed a kind of driving method of sweep trace of flat-panel screens, this method can shorten the time of picture element scan and charging, reduces the colour mixture between each color, and increasing colour saturation and look even, improves the sharpness of picture.
In the middle of instructions and follow-up claim, used some vocabulary to censure specific assembly.The person with usual knowledge in their respective areas should understand, and same assembly may be called with different nouns by manufacturer.This instructions and follow-up claim are not used as distinguishing the mode of assembly with the difference of title, but the benchmark that is used as distinguishing with the difference of assembly on function.Be an open term mentioned " comprising " in the middle of instructions and the follow-up request item in the whole text, so should be construed to " comprise but be not limited to ".In addition, " electric connection " speech is to comprise any indirect means that are electrically connected that directly reach at this.Therefore, be electrically connected at one second device, then represent this first device can be directly connected in this second device, or be connected to this second device indirectly through other device or connection means if describe one first device in the literary composition.
Fig. 3 is the oscillogram of first embodiment of the control signal of gate pole driver of the present invention.The general closed planar display comprises a gate pole driver, one source pole driver and a display panel.Gate pole driver utilizes gate frequency signal CPV, gate commencing signal STV and output enable signal OE to produce the gate signal, to open the multi-strip scanning line on the display panel.The present invention utilizes gate frequency signal CPV to do non-constant speed control, cooperates output enable signal OE, utilizes general gate pole driver to cooperate array (array) design of display panel, reaches and opens the multi-strip scanning line simultaneously, to shorten the sweep time of pixel.Gate frequency signal CPV is used to provide the synchronizing frequency of gate signal, gate commencing signal STV is used to provide the beginning pulse wave (pulse) of gate signal, set the triggered time and the pulse number of the pulse wave of gate signal by gate commencing signal STV, output enable signal OE is used for the control grid signal and whether exports corresponding sweep trace to.Flat display driving method of the present invention utilizes gate frequency signal CPV, gate commencing signal STV and output enable signal OE to produce the gate signal of opening the multi-strip scanning line simultaneously, in embodiments of the present invention, explain with the gate signal of opening two sweep traces simultaneously.Gate frequency signal CPV has one first class frequency A and one second class frequency B, gate commencing signal STV has two pulse waves, according to gate frequency signal CPV and gate pole commencing signal STV, produce in regular turn a plurality of gate signal G1, the G2 be used for controlling the multi-strip scanning line ..., GM, each gate signal has two pulse waves, cover the pulse wave of each gate signal during the first class frequency A according to output enable signal OE, and export the pulse wave of each gate signal during the second class frequency B, therefore, a plurality of gate signals can be opened two sweep traces during same.In Fig. 3, when output enable signal OE is high levle, cover the pulse wave of each gate signal during the first class frequency A, when output enable signal OE is low level, export the pulse wave of each gate signal during the second class frequency B.
Fig. 4 is the structural representation of the flat-panel screens 20 of the required cooperation of Fig. 3.Flat-panel screens 20 comprises a gate pole driver 22, one source pole driver 24 and a display panel 26.Display panel 26 comprises a plurality of pixels 28, a plurality of pixels 28 by multi-strip scanning line G1, G2 ..., GM is electrically connected at gate pole driver, a plurality of pixels 28 by many data line S1, S2 ..., SN electrically connects source electrode driver 24.According to the gate signal of Fig. 3, owing to open two sweep traces simultaneously, comprise an odd-numbered scan lines and an even-line interlace line, so data line need cooperate the different data of data line output, to export different pixel gray levels, reach shortening sweep time.In the present embodiment, the online pixel 18 of odd number scanning is electrically connected at the odd data line, and the online pixel 18 of even-line interlace is electrically connected at the even data line.
Fig. 5 is the oscillogram of second embodiment of the control signal of gate pole driver of the present invention.In first embodiment, the first class frequency A and the second class frequency B of gate frequency signal CPV are the constant speed frequency, and in a second embodiment, the first class frequency A of gate frequency signal CPV and the second class frequency B are non-constant speed frequency.Similarly, the control signal of second embodiment also needs to cooperate the flat-panel screens 20 of Fig. 4.
Fig. 6 is the oscillogram of the 3rd embodiment of the control signal of gate pole driver of the present invention.Gate frequency signal CPV has one first class frequency A and one second class frequency B, and gate commencing signal STV has two pulse waves.For closing (high levle), output enable signal OE for opening (low level), considers reciprocal effect and adjusts unlatching period of output enable signal OE when the second class frequency B output enable signal OE in addition when the first class frequency A.The output that dotted line is partly covered at the first class frequency A for the gate signal, two sweep traces of the each unlatching of the gate signal after covering, every sweep trace is only opened once.In addition, because two sweep traces of each unlatching, two sweep traces need respectively by different data line transmission data, display panel with resolution 1024*768 is an example, its sweep trace is G1～G768, because will open two data lines simultaneously, so need 2048 data lines.The first class frequency A of gate frequency signal CPV needs to decide according to the performance constraint of gate pole driver, and the second class frequency B of gate frequency signal CPV then decides according to the required time of pixel capacitance charges.Usually opening two sweep traces simultaneously can make the T.T. that display panel has scanned a whole image shorten half approximately.
Fig. 7 is the structural representation of the flat-panel screens 30 of the required cooperation of Fig. 6.Flat-panel screens 30 comprises a gate pole driver 32, one source pole driver 34 and a display panel 36.According to the gate signal of Fig. 6, because the same time has two sweep traces to open simultaneously, the pixels of therefore opening two row on delegation simultaneously will be electrically connected to different data lines.In the present embodiment, sweep trace G1 and sweep trace G3 opened with the time, so the pixel 38 on the sweep trace G1 is electrically connected to data line S1, the pixel 38 on the sweep trace G3 is electrically connected to data line S2.Sweep trace G2 and sweep trace G4 opened with the time, so the pixel 38 on the sweep trace G2 is electrically connected to data line S1, the pixel 38 on the sweep trace G4 is electrically connected to data line S2.
Please refer again to Fig. 6, frequency number with gate frequency signal CPV illustrates, the 1st is used for transmitting commencing signal STV with the 2nd frequency, and the 3rd frequency is used for opening sweep trace G1 and G3, the 4th frequency is used for opening sweep trace G2 and G4, asks during the charging of data line just.The 5th frequency then is used for skipping over the pulse wave of sweep trace G3 and G5, and the 6th frequency is used for skipping over the pulse wave of sweep trace G4 and G6, and the 7th frequency is used for opening sweep trace G5 and G7, and the 8th frequency is used for opening sweep trace G6 and G8.Therefore, output enable signal OE be close have gate frequency signal CPV the 1st, 2,5,6,9,10 ... individual frequency, output enable signal OE for open have gate frequency signal CPV 3,4,7,8,11,12 ... individual frequency.
One of ordinary skill in the art will appreciate that, realize that all or part of step in the foregoing description method is to instruct relevant hardware to finish by program, described program can be in being stored in a computer read/write memory medium, described storage medium is as ROM/RAM, disk, CD etc.
In embodiments of the present invention, add that with general gate pole driver and source electrode driver display panel that pixel reconfigures can reach the ability of accelerated scan.According to flat display driving method of the present invention, produce the gate commencing signal that a gate frequency signal and with one first class frequency and one second class frequency has two pulse waves, according to this gate frequency signal and this gate commencing signal, produce a plurality of gate signals that are used for controlling the multi-strip scanning line in regular turn, each gate signal has two pulse waves, cover the pulse wave of each gate signal during this first class frequency according to an output enable signal, and export the pulse wave of each gate signal during this second class frequency, therefore these a plurality of gate signals can be opened two sweep traces in this multi-strip scanning line during same.Type of drive of the present invention applies to the display panel of look preface method, just flat-panel screens has the backlight module of red light source, green light source and blue-light source, can shorten the time of picture element scan and charging, reduce the colour mixture between each color, increasing colour saturation and look even, if type of drive of the present invention applies to the display panel of non-look preface method, can improve the sharpness of picture.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the driving method of the sweep trace of a flat-panel screens is characterized in that, described method comprises the steps:
Produce a gate frequency signal with one first class frequency and one second class frequency;
Generation one has the gate commencing signal of two pulse waves;
According to described gate frequency signal and described gate commencing signal, produce a plurality of gate signals that are used for controlling the multi-strip scanning line in regular turn, each gate signal has two pulse waves;
Cover the pulse wave of each gate signal during described first class frequency according to an output enable signal, and export the pulse wave of each gate signal during described second class frequency; And
During same, open two sweep traces in the described multi-strip scanning line according to described a plurality of gate signals.
2. the driving method of the sweep trace of flat-panel screens as claimed in claim 1 is characterized in that, described step of opening two sweep traces in the described multi-strip scanning line in the same period according to described a plurality of gate signals is specially:
Open an article one sweep trace and a second sweep trace simultaneously, be electrically connected at first row pixel cell of described article one sweep trace and the secondary series pixel cell that unlatching is electrically connected at described second sweep trace with unlatching; And
Use one first group of data line to transmit one first row video data, and use one second group of data line to transmit a secondary series video data to described secondary series pixel cell to the described first row pixel cell.
3. the driving method of the sweep trace of flat-panel screens as claimed in claim 1 is characterized in that, described step of opening two sweep traces in the described multi-strip scanning line according to described a plurality of gate signals during same is specially:
With the picture frame time be divided into a plurality of during;
During each, open two sweep traces in the described multi-strip scanning line; And
In time, only open each bar sweep trace once in described picture frame.
4. the driving method of the sweep trace of flat-panel screens as claimed in claim 1, it is characterized in that, have in the step of gate frequency signal of one first class frequency and one second class frequency in described generation one, the frequency values of described first class frequency is greater than the frequency values of described second class frequency.
5. the driving method of the sweep trace of flat-panel screens as claimed in claim 1, it is characterized in that, describedly cover the pulse wave of each gate signal during described first class frequency, and the step of exporting the pulse wave of each gate signal during described second class frequency is specially according to an output enable signal:
When described output enable signal is high levle, cover the pulse wave of each gate signal during described first class frequency; And
When described output enable signal is low level, export the pulse wave of each gate signal during described second class frequency.
6. the driving method of the sweep trace of flat-panel screens as claimed in claim 1 is characterized in that, described flat-panel screens has the backlight module of red light source, green light source and blue-light source.
7. the driving method of the sweep trace of flat-panel screens as claimed in claim 1 is characterized in that, each row pixel cell system of described flat-panel screens is by two data line transmitting and displaying data.
8. the driving method of the sweep trace of flat-panel screens as claimed in claim 1 is characterized in that, described flat-panel screens is active-matrix formula flat-panel screens (AMLCD), organic light emitting diode display (OLED) or plasma display panel (PDP).
9. the driving method of the sweep trace of flat-panel screens as claimed in claim 1 is characterized in that, described method also comprises the steps:
Utilize described gate commencing signal to set the triggered time and the pulse number of the pulse wave of described a plurality of gate signals.
10. the driving method of the sweep trace of flat-panel screens as claimed in claim 1 is characterized in that, described method also comprises the steps:
Utilize described gate frequency signal to set the interval time of the pulse wave of described a plurality of gate signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101066062A CN101533597B (en) | 2009-04-02 | 2009-04-02 | Driving method of scanning line of plane monitor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101066062A CN101533597B (en) | 2009-04-02 | 2009-04-02 | Driving method of scanning line of plane monitor |
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| CN101533597A CN101533597A (en) | 2009-09-16 |
| CN101533597B true CN101533597B (en) | 2010-10-13 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI417865B (en) * | 2010-02-25 | 2013-12-01 | Chunghwa Picture Tubes Ltd | A method for eliminating bright lines and dark lines of a crystal liquid display panel |
| CN101950539B (en) * | 2010-03-19 | 2013-05-15 | 福建华映显示科技有限公司 | Method for eliminating bright and dark lines of liquid crystal display panel |
| CN102005174B (en) * | 2010-12-31 | 2013-06-05 | 福建华映显示科技有限公司 | Method for reducing image ghosting |
| CN105469757A (en) * | 2015-12-10 | 2016-04-06 | 深圳市华星光电技术有限公司 | Display panel scan driving method |
| TWI590214B (en) | 2016-05-20 | 2017-07-01 | 友達光電股份有限公司 | Displaying device |
| KR102664804B1 (en) * | 2018-10-10 | 2024-05-14 | 삼성디스플레이 주식회사 | Display apparatus and method of driving display panel using the same |
| CN109410867B (en) * | 2018-12-05 | 2020-10-16 | 惠科股份有限公司 | Display panel, driving method and display device |
| CN109658889B (en) * | 2019-01-10 | 2021-02-12 | 惠科股份有限公司 | Drive framework, display panel and display device |
| CN112071276A (en) * | 2020-10-15 | 2020-12-11 | 武汉华星光电技术有限公司 | Backlight source, backlight module and display device |
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Owner name: CPT TECHNOLOGY (GROUP) CO., LTD. Free format text: FORMER OWNER: CPT DISPLAY TECHNOLOGY SHENZHEN LTD. Effective date: 20130704 |
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Effective date of registration: 20130704 Address after: 350000, No. 6 West Road, Mawei District, Fujian, Fuzhou Patentee after: CPT DISPLAY TECHNOLOGY (SHENZHEN)CO., LTD. Patentee after: Chunghwa Picture Tubes Ltd. Address before: 518000, Guangming hi tech Industrial Park, Shenzhen, Guangdong, No. 9, Ming Tong Road, Baoan District Patentee before: CPT Display Technology Shenzhen Ltd. Patentee before: Chunghwa Picture Tubes Ltd. |
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