CN113241042A - Demux driving method - Google Patents
Demux driving method Download PDFInfo
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- CN113241042A CN113241042A CN202110328018.4A CN202110328018A CN113241042A CN 113241042 A CN113241042 A CN 113241042A CN 202110328018 A CN202110328018 A CN 202110328018A CN 113241042 A CN113241042 A CN 113241042A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims description 19
- 230000000694 effects Effects 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 1
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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Abstract
The invention provides a Demux driving method, which is divided into a first sub-pixel Demux driving stage, a second sub-pixel Demux driving stage and a third sub-pixel Demux driving stage in the starting time domain of a grid driving line; the time of the first sub-pixel Demux driving stage, the second sub-pixel Demux driving stage and the third sub-pixel Demux driving stage is the same; a first interval time is arranged between the first sub-pixel Demux driving stage and the second sub-pixel Demux driving stage, a second interval time is arranged between the second sub-pixel Demux driving stage and the third sub-pixel Demux driving stage, and the first interval time and the second interval time are the same. According to the technical scheme, the third interval time is arranged after the turn-on time domain of the grid drive line, and the charging time of the third sub-pixel can be prolonged, so that the charging time of the first sub-pixel and the second sub-pixel is prolonged, the charging rate of the display screen is improved, and the display effect of the display screen is optimized.
Description
Technical Field
The invention relates to the field of Demux driving, in particular to a Demux driving method.
Background
With the continuous development of display screen technology, higher refresh rate and resolution are often favored. For display screens, the full screen concept has gone deep into the mind, and a narrower border tends to mean a higher screen fraction. For the display screen adopting the Demux technology, the lower frame of the display screen can be greatly reduced, and the requirement on the charging and discharging speed is higher. For an LCD screen, the charging rate of the conventional Demux liquid crystal display screen is short in time, which can affect the display effect of the Demux liquid crystal display screen.
Disclosure of Invention
Therefore, it is necessary to provide a Demux driving method to improve the charging rate of the display screen and improve the display effect of the display screen.
To achieve the above object, the present application provides a Demux driving method, including the steps of:
driving the grid drive line to be started, and sequentially carrying out the following sub-pixel driving in the starting time domain of the grid drive line:
performing first sub-pixel Demux driving;
after the first sub-pixel Demux driving stage is finished and a first interval time is set, carrying out second sub-pixel Demux driving;
after the second sub-pixel Demux driving stage is finished and a second interval time is set, carrying out third sub-pixel Demux driving;
wherein the first sub-pixel Demux driving phase, the second sub-pixel Demux driving phase and the third sub-pixel Demux driving phase are the same in time; and the first interval time is the same as the second interval time.
Further, after the gate driving line is turned off, the method further includes the steps of: after the third sub-pixel Demux driving stage is finished, a third interval time is set;
wherein the third interval time is placed after an on time domain of the gate driving line.
Further, the third interval time is smaller than the second interval time or smaller than the first interval time.
Further, the method also comprises the following steps:
the first sub-pixel data transmission phase is started simultaneously when the first sub-pixel Demux driving phase is started;
the second sub-pixel data transmission phase is started simultaneously when the second sub-pixel Demux driving phase is started;
the third sub-pixel data transmission phase is started simultaneously when the third sub-pixel Demux driving phase is started;
the duration of the first sub-pixel data transmission stage is equal to the sum of the duration of the first sub-pixel Demux driving stage and the first interval time, and the duration of the second sub-pixel data transmission stage is equal to the sum of the duration of the second sub-pixel Demux driving stage and the second interval time; the third subpixel data transfer phase duration is equal to the sum of the third subpixel Demux driving phase duration and the third interval time.
Further, the first sub-pixel is an R sub-pixel, the second sub-pixel is a G sub-pixel, and the third sub-pixel is a B sub-pixel.
Different from the prior art, according to the technical scheme, the third interval time is arranged after the turn-on time domain of the grid drive line, and the charging time of the third sub-pixel can be prolonged, so that the charging time of the first sub-pixel and the second sub-pixel is prolonged, the charging rate of the display screen is improved, and the display effect of the display screen is optimized.
Drawings
FIG. 1 is a timing diagram of a related art Demux driving method;
FIG. 2 is a timing diagram of the Demux driving method.
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
In the application, a Demux driving method is applied to a liquid crystal display panel, and specifically, the same is true for the time when a gate driving line is turned on (the gate driving line voltage is a high voltage, generally 15V), and for the Demux liquid crystal display panel, when a first sub-pixel, a second sub-pixel or a third sub-pixel is at a high level, a voltage signal transmitted from a driving IC is first transmitted to a data line in a plane, and the data line transmits the voltage signal to a parasitic capacitance on the data line and a pixel electrode at the same time. When the first sub-pixel, the second sub-pixel or the third sub-pixel is in a low level, only the data line is left to charge the sub-pixel, and the patent mainly improves the charging efficiency of the data line to the pixel electrode.
Referring to fig. 2, the present application includes the following steps, in the on time domain of the gate driving line, divided into a first sub-pixel Demux driving phase, a second sub-pixel Demux driving phase, and a third sub-pixel Demux driving phase; the first sub-pixel Demux driving stage, the second sub-pixel Demux driving stage and the third sub-pixel Demux driving stage have the same time; a first interval time is arranged between the first sub-pixel Demux driving stage and the second sub-pixel Demux driving stage, a second interval time is arranged between the second sub-pixel Demux driving stage and the third sub-pixel Demux driving stage, and the first interval time and the second interval time are the same. It should be noted that the duration of the third sub-pixel Demux driving phase is equal to the duration of the first sub-pixel Demux driving phase, and the duration of the third sub-pixel Demux driving phase is the duration of the second sub-pixel Demux driving phase; the falling edge of the third sub-pixel Demux driving phase coincides with the falling edge of the gate driving line, i.e., the gate driving line is turned off simultaneously with the turning off of the third sub-pixel Demux driving phase. It should be further noted that the first sub-pixel Demux driving phase, the second sub-pixel Demux driving phase, and the third sub-pixel Demux driving phase are sequentially turned on in a gate driving line on time domain, and the time intervals between two adjacent phases are the same. The falling edge of the gate drive line coincides with the falling edge of the third sub-pixel in the Demux drive stage, so that the charging duration of the third sub-pixel can be prolonged, and the charging duration of the first sub-pixel and the second sub-pixel is the same as the charging duration of the third sub-pixel, therefore, the Demux drive method can effectively improve the charging rate of the display screen and optimize the effect of the display screen.
Specifically, the Demux driving method comprises the following steps:
driving the grid drive line to be started, and sequentially carrying out the following sub-pixel driving in the starting time domain of the grid drive line:
performing first sub-pixel Demux driving;
after the first sub-pixel Demux driving stage is finished and a first interval time is set, carrying out second sub-pixel Demux driving;
after the second sub-pixel Demux driving stage is finished and a second interval time is set, carrying out third sub-pixel Demux driving;
wherein the first sub-pixel Demux driving phase, the second sub-pixel Demux driving phase and the third sub-pixel Demux driving phase are the same in time; and the first interval time is the same as the second interval time.
After the grid drive line is closed, the method also comprises the following steps: after the third sub-pixel Demux driving stage is finished, a third interval time is set;
wherein the third interval time is placed after an on time domain of the gate driving line.
Of course, in some embodiments, the third sub-pixel Demux driving phase is also followed by an interval, but the third interval is placed after the third sub-pixel Demux driving phase, and the third interval is not within the on-time domain of the gate driving line. It should be noted that, the application refers to the turn-on time domain and the third interval time of the gate driving line as a time of H, and the turn-on time domain of the gate driving line is equal to Tgate, and the third interval time is equal to T4; the first interval time is equal to the second interval time and equal to T2; the first sub-pixel Demux drive phase is equal to the second sub-pixel Demux drive phase is equal to the third sub-pixel Demux drive phase and is equal to T11. Referring to fig. 2, fig. 2 is a timing diagram of the modified Demux timing diagram, where the gate driving line on time is equal to 3 × T11+2 × T2, and the time of 1H is equal to the gate driving line on time plus T4, i.e., 1H ═ Tgate + T4 ═ 3 × T11+2 × T2+ T4, Tgate ═ 3 × T11+2 × T2; meanwhile, as can be seen from a comparison of the timing diagram of fig. 1, T11 is T1+1/3 is T3. Therefore, as can be known, there is no third interval time in the whole Tgate phase, so that the charging time of the third sub-pixel can be increased; to ensure that the brightness of each sub-pixel in the display screen is the same, the charging time of the first, second and third sub-images should also be the same.
It should be contrasted that, in fig. 1, the turn-on time domain of the gate driving line is Tgate'; each sub-pixel Demux driving stage is T1, and the interval time after the first sub-pixel Demux driving stage and the second sub-pixel Demux driving stage are equal and are T2'; the interval after the third sub-pixel Demux drive phase is T3, and the gate drive line on time Tgate 'is equal to 3 × T1+2 × T2' + T3 in fig. 1.
In fig. 1, after T3, there is also provided a T4 ', the time of 1H ' is equal to the gate drive line on time plus T4, i.e., 1H ' + T4 ' + 3T 1+ 2T 2 ' + T3+ T4, Tgate ' + 3T 1+ 2T 2 ' + T3. For Data R/G/B, the charging rate of the display screen is positively correlated with the time length of T1, i.e., the longer the time of T1, the higher the charging rate. Also, as can be seen from fig. 1, the interval of the third sub-pixel is in the Tgate', i.e., the interval of the third sub-pixel reduces the charging time of the pixel. From the above formula, it can be seen that the charging rate of the sub-pixels can be improved by shifting the interval time after the Demux driving phase of the third sub-pixel out of the turn-on time domain of the gate driving line.
Referring to FIG. 2, in some embodiments, a sub-pixel data transmission phase is further included to define each sub-pixel Demux driving phase, i.e., the first sub-pixel Demux driving phase and the first interval are in the first sub-pixel data transmission phase, and similarly, the second sub-pixel Demux driving phase and the second interval are in the second sub-pixel data transmission phase, and the third sub-pixel Demux driving phase and the third interval are in the third sub-pixel data transmission phase. Specifically, the Demux driving method further includes: a first sub-pixel Data transfer phase (i.e., Data R in fig. 2), a second sub-pixel Data transfer phase (i.e., Data G in fig. 2), and a third sub-pixel Data transfer phase (i.e., Data B in fig. 2); the duration of the first sub-pixel data transmission stage is the sum of the duration of the first sub-pixel Demux driving stage and the first interval time, and the duration of the second sub-pixel data transmission stage is the sum of the duration of the second sub-pixel Demux driving stage and the second interval time; the duration of the data transmission stage of the third sub-pixel is the sum of the duration of the Demux driving stage of the third sub-pixel and the third interval time; the first sub-pixel data transmission phase is started simultaneously when the first sub-pixel Demux driving phase is started; the second sub-pixel data transmission phase is started simultaneously when the second sub-pixel Demux driving phase is started; the third sub-pixel data transfer phase is simultaneously turned on when the third sub-pixel Demux driving phase is turned on.
It should be noted that, although the above embodiments have been described herein, the invention is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein, or by using equivalent structures or equivalent processes performed in the content of the present specification and the attached drawings, which are included in the scope of the present invention.
Claims (5)
1. A Demux driving method characterized by comprising the steps of:
driving the grid drive line to be started, and sequentially carrying out the following sub-pixel driving in the starting time domain of the grid drive line:
performing first sub-pixel Demux driving;
after the first sub-pixel Demux driving stage is finished and a first interval time is set, carrying out second sub-pixel Demux driving;
after the second sub-pixel Demux driving stage is finished and a second interval time is set, carrying out third sub-pixel Demux driving;
wherein the first sub-pixel Demux driving phase, the second sub-pixel Demux driving phase and the third sub-pixel Demux driving phase are the same in time; and the first interval time is the same as the second interval time.
2. The Demux driving method according to claim 1, further comprising, after the gate driving line is turned off, the steps of: after the third sub-pixel Demux driving stage is finished, a third interval time is set;
wherein the third interval time is placed after an on time domain of the gate driving line.
3. A Demux driving method according to claim 2, characterized in that the third interval time is smaller than the second interval time or smaller than the first interval time.
4. The Demux driving method according to claim 2, further comprising the steps of:
the first sub-pixel data transmission phase is started simultaneously when the first sub-pixel Demux driving phase is started;
the second sub-pixel data transmission phase is started simultaneously when the second sub-pixel Demux driving phase is started;
the third sub-pixel data transmission phase is started simultaneously when the third sub-pixel Demux driving phase is started;
the duration of the first sub-pixel data transmission stage is equal to the sum of the duration of the first sub-pixel Demux driving stage and the first interval time, and the duration of the second sub-pixel data transmission stage is equal to the sum of the duration of the second sub-pixel Demux driving stage and the second interval time; the third subpixel data transfer phase duration is equal to the sum of the third subpixel Demux driving phase duration and the third interval time.
5. The Demux driving method according to any one of claims 1 to 4, wherein the first sub-pixel is an R sub-pixel, the second sub-pixel is a G sub-pixel, and the third sub-pixel is a B sub-pixel.
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| CN202110328018.4A CN113241042A (en) | 2021-03-26 | 2021-03-26 | Demux driving method |
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| CN202110328018.4A CN113241042A (en) | 2021-03-26 | 2021-03-26 | Demux driving method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115223481A (en) * | 2022-07-28 | 2022-10-21 | 福建华佳彩有限公司 | Novel display driving method |
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| CN101149895A (en) * | 2006-08-18 | 2008-03-26 | 恩益禧电子股份有限公司 | Display panel drive technique for reducing power consumption |
| JP2014160232A (en) * | 2013-01-23 | 2014-09-04 | Japan Display Inc | Display device and electronic apparatus |
| 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 |
| WO2019205208A1 (en) * | 2018-04-27 | 2019-10-31 | 深圳市华星光电半导体显示技术有限公司 | Multiplexing driving circuit and driving method, and display device |
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- 2021-03-26 CN CN202110328018.4A patent/CN113241042A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101149895A (en) * | 2006-08-18 | 2008-03-26 | 恩益禧电子股份有限公司 | Display panel drive technique for reducing power consumption |
| JP2014160232A (en) * | 2013-01-23 | 2014-09-04 | Japan Display Inc | Display device and electronic apparatus |
| WO2019205208A1 (en) * | 2018-04-27 | 2019-10-31 | 深圳市华星光电半导体显示技术有限公司 | Multiplexing driving circuit and driving method, and display 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115223481A (en) * | 2022-07-28 | 2022-10-21 | 福建华佳彩有限公司 | Novel display driving method |
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