CN110070818A - Grid drive method for display panel - Google Patents
Grid drive method for display panel Download PDFInfo
- Publication number
- CN110070818A CN110070818A CN201910284465.7A CN201910284465A CN110070818A CN 110070818 A CN110070818 A CN 110070818A CN 201910284465 A CN201910284465 A CN 201910284465A CN 110070818 A CN110070818 A CN 110070818A
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- Prior art keywords
- display panel
- line
- scanning signal
- voltage
- drive method
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000010409 thin film Substances 0.000 claims abstract description 19
- 239000010408 film Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 9
- 230000001934 delay Effects 0.000 abstract description 8
- 230000000630 rising effect Effects 0.000 description 5
- 238000007323 disproportionation reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- 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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
A kind of grid drive method for display panel, display panel includes multi-strip scanning line, multiple data lines and the multiple pixel units for connecting multi-strip scanning line and multiple data lines, each pixel unit is provided with an at least thin film transistor (TFT), the grid of a scan line connection at least thin film transistor (TFT), the source electrode of a data line connection at least thin film transistor (TFT), the described method includes: providing scanning signal to multi-strip scanning line, with the thin film transistor (TFT) sequentially connected in multiple pixel units, wherein provide multi-strip scanning line scanning signal voltage according to scanning signal offer sequentially.The method can be improved the effective charging time reduced by RC delays effect, improve the display panel uniformity.
Description
Technical field
This application involves a kind of driving method, in particular to a kind of grid drive method for display panel.
Background technique
In the prior art, due to RC delays effect (RC delay) and panel processing procedure various reasons, large scale, height
Resolution or the high display panel of refreshing frequency are easy to produce pixel itself charging time insufficient situation, so that display panel is bright
It is bad to spend uniformity.
Summary of the invention
The application's is designed to provide a kind of grid drive method for display panel, uniform to improve display panel
Degree.
To reach above-mentioned purpose, on the one hand the application provides a kind of grid drive method for display panel, described aobvious
Show that panel includes multi-strip scanning line, multiple data lines and the multiple pictures for connecting the multi-strip scanning line and the multiple data lines
Plain unit, each pixel unit are provided with an at least thin film transistor (TFT), and the scan line connects an at least thin film transistor (TFT)
Grid, the data line connects the source electrode of an at least thin film transistor (TFT), which comprises Xiang Suoshu multi-strip scanning line
Scanning signal is provided, sequentially to connect the thin film transistor (TFT) in the multiple pixel unit, wherein providing described a plurality of sweep
Retouch the voltage of the scanning signal of line according to the scanning signal offer sequentially.
In the embodiment of the present application, voltage the mentioning according to the scanning signal of the scanning signal of the multi-strip scanning line is provided
It is incremented by for order linear.
In the embodiment of the present application, the voltage swing for providing the scanning signal of the multi-strip scanning line is different each other.
In the embodiment of the present application, the period of change for providing the voltage of the scanning signal of the multi-strip scanning line is equivalent to vertically
The period of lock-out pulse.
In the embodiment of the present application, the period of change for providing the voltage of the scanning signal of the multi-strip scanning line is equivalent to a frame
The time of image.
On the other hand the application provides a kind of grid drive method for display panel, the display panel includes a plurality of
Scan line, multiple data lines and the multiple pixel units for connecting the multi-strip scanning line and the multiple data lines, the side
Method includes: to provide scanning signal to the sequentially multi-strip scanning line from top to bottom to drive the multiple pixel unit, wherein mentioning
It is incremented by from top to bottom for the voltage of the scanning signal of the multi-strip scanning line.
In the embodiment of the present application, the voltage of the scanning signal of multi-strip scanning line linear increment from top to bottom is provided.
In the embodiment of the present application, the voltage swing for providing the scanning signal of the multi-strip scanning line is different each other.
In the embodiment of the present application, the period of change for providing the voltage of the scanning signal of the multi-strip scanning line is equivalent to vertically
The period of lock-out pulse.
In the embodiment of the present application, the period of change for providing the voltage of the scanning signal of the multi-strip scanning line is equivalent to a frame
The time of image.
In the grid drive method of the application, the voltage of the scanning signal of the multi-strip scanning line is provided according to the scanning
The offer of signal sequentially, such as provides the voltage of the scanning signal of the multi-strip scanning line and is incremented by from top to bottom, this side
Formula can be improved the effective charging time reduced by RC delays effect, and then improve display panel because undercharge is drawn
The problem of brightness disproportionation risen.
Detailed description of the invention
Fig. 1 shows a kind of schematic diagram of display panel.
Fig. 2 shows the comparison figure in the charging time of different pixels point in the prior art.
Fig. 3 shows the timing diagram of the scanning signal according to the application.
Fig. 4 shows the comparison figure in the charging time of different pixels point in the application.
Specific embodiment
It is right as follows in conjunction with drawings and embodiments to keep the purpose, technical solution and effect of the application clearer, clear
The application is further described.It should be appreciated that specific embodiment described herein is only to explain that the application, the application are said
The word " embodiment " used in bright book means serving as example, example or illustration, is not used to limit the application.
Referring to Fig. 1, display panel include gate driving circuit 10, it is source electrode drive circuit 20, multi-strip scanning line 12, a plurality of
Data line 22 and multiple pixel units 30.Gate driving circuit 10 connects the multi-strip scanning line 12, to provide scanning letter
Number give the multi-strip scanning line 12.GOA (gate on array) technology can be used in gate driving circuit 10.Source electrode drive circuit
The 20 connection multiple data lines 22, to provide data-signal to the multiple data lines 22.The multiple pixel unit 30
The multi-strip scanning line 12 and the multiple data lines 22 are connected, the multiple pixel unit 30 is by 12 He of multi-strip scanning line
The multiple data lines 12 are interwoven.
An at least thin film transistor (TFT) (thin-film transistor, TFT) 40 is provided in each pixel unit 30.Institute
Thin film transistor (TFT) 40 is stated with grid, source electrode and drain.The grid of an at least thin film transistor (TFT) 40 connects the scan line
12, the source electrode of an at least thin film transistor (TFT) 40 connects the data line 22, the drain of an at least thin film transistor (TFT) 40
Connect the pixel electrode in the pixel unit 30.The scan line 12 transmits scanning signal to the institute in the pixel unit 30
The grid of an at least thin film transistor (TFT) 40 is stated, to connect an at least thin film transistor (TFT) 40, the data line 22 passes through at this time
Data-signal is imported the pixel electrode in the pixel unit 30 by the source electrode of an at least thin film transistor (TFT) 40, successively mode
Show the pixel in image.
Illustrate the missing of the prior art below.
In the prior art, due to RC delays effect (RC delay) and panel processing procedure various reasons, large scale, height
Resolution or the high display panel of refreshing frequency are easy to produce pixel itself charging time insufficient situation, so that display panel is bright
It is bad to spend uniformity.
As shown in Figure 1, in the prior art, because of RC delays effect, the charging of 9 pixels itself on display panel
Time is different, causes the situation of brightness disproportionation.Such as it puts 1 and puts 7, puts 2 and put 8, point 3 and put 9 and put 1 and put 2 and all deposit
In the situation that the charging time is different.
Referring to Fig. 2, by taking point 1 and point 7 as an example, since scanning signal from top to bottom transmit down by level-one level-one, point 1 and point
7 RC load (RC loading) is different, this scanning signal for directly resulting in corresponding points 7 decays.As shown in Fig. 2, comparing
In point 1, (rising time) becomes larger during putting the rising edge of 7 corresponding scanning signals, and then has compressed a little 7 film crystalline substance
During the connection of body pipe.It is, the time that data-signal acts on a little 7 reduces, this leads to a little 7 charging compared to point 1
Time is fewer (charging time is indicated with dashed rectangle) than the charging time of point 1.For example, with the data-signal of identical voltage value
Input point 1 and point 7, the brightness for putting 7 can be less than the brightness of point 1.That is, there are display panel brightness uniformities for the prior art
Bad problem.
Illustrate the solution that the application proposes below:
Also referring to Fig. 1 and Fig. 3, the grid drive method of the application uses following steps:
Scanning signal is provided to the multi-strip scanning line 12, it is described thin in the multiple pixel unit 30 sequentially to connect
Film transistor 40, wherein providing the voltage of the scanning signal of the multi-strip scanning line 12 according to the offer sequence of the scanning signal
It is incremented by.
In an embodiment, the grid drive method of the application uses following steps:
The multiple pixel unit 40 is driven to the sequentially offer scanning signal of multi-strip scanning line 12 from top to bottom,
The voltage of the middle scanning signal for providing the multi-strip scanning line 12 is incremented by from top to bottom.
Vsync represents vertical synchronization (vertical synchronization) signal, two vertical sync pulses in Fig. 3
Between time be a frame image time, G1, G2 ..., Gn is scanning signal, the electricity of these scanning signals G1, G2 ..., Gn
Pressure is generated according to VGH signal.
As shown in figure 3, the voltage of VGH signal is a variable voltage, voltage swing is incremented by one cycle, such as line
Property be incremented by.This indicates scanning signal G1, G2 ..., the voltage swing of Gn is incremental or linear increment.For example, institute is provided
The voltage swing for stating the scanning signal G1, G2 ..., Gn of multi-strip scanning line 12 is different each other, provides the multi-strip scanning line 12
Scanning signal G1, G2 ..., the voltage of Gn linear increment from top to bottom.It may also be said that providing the scanning of the multi-strip scanning line 12
Signal G1, G2 ..., the voltage of Gn according to scanning signal G1, the G2 ..., the offer order linear of Gn is incremented by.
As shown in figure 3, the voltage change period of VGH signal is equivalent to the period of vertical sync pulse, that is, a frame
The time of image.That is, providing the period of change of the voltage of the scanning signal G1, G2 ..., Gn of the multi-strip scanning line 12
It is equivalent to the period of vertical sync pulse.In other words, the electricity of the scanning signal G1, G2 ..., Gn of the multi-strip scanning line 12 are provided
The period of change of pressure is equivalent to the time of a frame image.
In the insufficient situation of pixel charging time, the voltage of scanning signal is improved, scanning signal rising edge can be made
Period becomes smaller, and so as to increase effective charging time of pixel, and then improves display panel because of brightness caused by undercharge
Uneven problem.
Referring to Fig. 4, by point 1 and point 7 for, if be input to a little 1 and point 7 scanning signal be identical fixed voltage,
Because of RC delays effect, (dashed curve in such as Fig. 4) becomes larger during putting the rising edge of 7 corresponding scanning signals, leads
Cause the charging time of point 7 fewer (charging time is indicated with dashed rectangle) than the charging time of point 1, such as above to the description of Fig. 2.And
As scanning signal G1, the voltage swing of G2 ..., Gn be it is incremental, that is, put 7 scanning signal voltage be greater than point 1 scanning signal
Voltage, the case where compared to Fig. 2, become smaller during the rising edge for putting 7 corresponding scanning signals, this makes effective charging of invocation point 7
Time becomes larger, roughly the same with effective charging time of point 1.Therefore, scanning signal G1, G2 ..., the voltage swing of Gn is incremented by can
To improve the effective charging time reduced by RC delays effect, therefore the uniformity of display panel (such as luminance uniformity)
Improved.
In the grid drive method of the application, the voltage of the scanning signal of the multi-strip scanning line is provided according to the scanning
The offer of signal sequentially, such as provides the voltage of the scanning signal of the multi-strip scanning line and is incremented by from top to bottom, this side
Formula can be improved the effective charging time reduced by RC delays effect, and then improve display panel because undercharge is drawn
The problem of brightness disproportionation risen.
Although above preferred embodiment is not to limit in conclusion the application is disclosed above with preferred embodiment
The application processed, those skilled in the art are not departing from scope of the present application, can make it is various change and retouch, because
The protection scope of this application subjects to the scope of the claims.
Claims (10)
1. a kind of grid drive method for display panel, the display panel include multi-strip scanning line, multiple data lines with
And multiple pixel units of the connection multi-strip scanning line and the multiple data lines, it is thin that each pixel unit is provided at least one
Film transistor, the scan line connect the grid of an at least thin film transistor (TFT), and the data line connection described at least one is thin
The source electrode of film transistor, which is characterized in that the described method includes: scanning signal is provided to the multi-strip scanning line, sequentially to connect
Lead to the thin film transistor (TFT) in the multiple pixel unit, wherein provide the voltage of the scanning signal of the multi-strip scanning line according to
According to the scanning signal offer sequentially.
2. the grid drive method according to claim 1 for display panel, it is characterised in that: provide described a plurality of sweep
The voltage for retouching the scanning signal of line is incremented by according to the offer order linear of the scanning signal.
3. the grid drive method according to claim 1 for display panel, it is characterised in that: provide described a plurality of sweep
The voltage swing for retouching the scanning signal of line is different each other.
4. the grid drive method according to claim 1 for display panel, it is characterised in that: provide described a plurality of sweep
The period of change for retouching the voltage of the scanning signal of line is equivalent to the period of vertical sync pulse.
5. the grid drive method according to claim 1 for display panel, it is characterised in that: provide described a plurality of sweep
The period of change for retouching the voltage of the scanning signal of line is equivalent to the time of a frame image.
6. a kind of grid drive method for display panel, the display panel include multi-strip scanning line, multiple data lines with
And multiple pixel units of the connection multi-strip scanning line and the multiple data lines, which is characterized in that the described method includes: by
On provide scanning signal to the sequentially multi-strip scanning line to drive the multiple pixel unit, wherein providing described a plurality of down
The voltage of the scanning signal of scan line is incremented by from top to bottom.
7. the grid drive method according to claim 6 for display panel, it is characterised in that: provide described a plurality of sweep
Retouch the voltage of the scanning signal of line linear increment from top to bottom.
8. the grid drive method according to claim 6 for display panel, it is characterised in that: provide described a plurality of sweep
The voltage swing for retouching the scanning signal of line is different each other.
9. the grid drive method according to claim 6 for display panel, it is characterised in that: provide described a plurality of sweep
The period of change for retouching the voltage of the scanning signal of line is equivalent to the period of vertical sync pulse.
10. the grid drive method for display panel stated according to claim 6, it is characterised in that: provide described a plurality of sweep
The period of change for retouching the voltage of the scanning signal of line is equivalent to the time of a frame image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910284465.7A CN110070818A (en) | 2019-04-10 | 2019-04-10 | Grid drive method for display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910284465.7A CN110070818A (en) | 2019-04-10 | 2019-04-10 | Grid drive method for display panel |
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| Publication Number | Publication Date |
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| CN110070818A true CN110070818A (en) | 2019-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910284465.7A Pending CN110070818A (en) | 2019-04-10 | 2019-04-10 | Grid drive method for display panel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110554806A (en) * | 2019-09-05 | 2019-12-10 | 京东方科技集团股份有限公司 | Driving method and device of touch display panel, touch display panel |
| CN113516938A (en) * | 2021-06-23 | 2021-10-19 | 惠科股份有限公司 | Driving circuit and driving method of display panel and display device |
| CN115953989A (en) * | 2022-12-27 | 2023-04-11 | Tcl华星光电技术有限公司 | Driving method, driving device and display device of display panel |
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| CN115953989A (en) * | 2022-12-27 | 2023-04-11 | Tcl华星光电技术有限公司 | Driving method, driving device and display device of display panel |
| CN115953989B (en) * | 2022-12-27 | 2025-11-11 | Tcl华星光电技术有限公司 | Driving method and driving device of display panel and display device |
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| CB02 | Change of applicant information |
Address after: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Applicant after: TCL China Star Optoelectronics Technology Co.,Ltd. Address before: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Applicant before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |
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Application publication date: 20190730 |
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