CN109285512A - A kind of driving method and device of display panel - Google Patents
A kind of driving method and device of display panel Download PDFInfo
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- CN109285512A CN109285512A CN201811253408.4A CN201811253408A CN109285512A CN 109285512 A CN109285512 A CN 109285512A CN 201811253408 A CN201811253408 A CN 201811253408A CN 109285512 A CN109285512 A CN 109285512A
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- 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
- 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
-
- 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
- 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
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3674—Details of drivers for scan electrodes
- G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
Abstract
The present invention provides the driving method and device of a kind of display panel, and the driving method of the display panel includes: the grayscale value to be shown for obtaining the corresponding pixel of each sub-pixel；The first of the preset data signal of the high level of corresponding sub-pixel the second reception duration for receiving duration and the low level preset data signal is obtained according to the grayscale value to be shown；Wherein the preset data signal has high level and low level；The preset data signal is inputted to the corresponding sub-pixel, and duration and described second is received described first and is received in duration respectively to the scanning signal of the corresponding sub-pixel input high level, so that the corresponding sub-pixel receives the preset data signal for the high level that first receives duration and the low level preset data signal of the second reception duration, to show the picture to be shown.The driving method and device of display panel of the invention, can be avoided and color tracking and color offset occur, improve display effect.
Description
[technical field]
The present invention relates to field of display technology, more particularly to the driving method and device of a kind of display panel.
[background technique]
In existing display picture, white-point colours can change with the change of driving voltage, from dark-state to illuminated state white point face
Color changes always, namely color tracking occurs.
Existing ameliorative way is by inputting different RGB gray scale voltages to each sub-pixel in panel, by mixed
Color approaches into illuminated state white-point colours.However, different RGB gray scale voltages blendes together white-point colours, it is easy because of processing procedure reason, such as liquid
The reasons such as brilliant box thick (LC cell gap) is different with color blocking thickness, cause color offset.
Therefore, it is necessary to the driving method and device of a kind of display panel be provided, to solve to ask present in the prior art
Topic.
[summary of the invention]
The purpose of the present invention is to provide a kind of driving method of display panel and devices, can be avoided and color tracking occur
And color offset, improve display effect.
In order to solve the above technical problems, the present invention provides a kind of driving method of display panel, wherein display panel includes
Multiple sub-pixels；The display panel is for showing picture to be shown；Pixel in the sub-pixel and the picture to be shown
It is corresponding；The described method includes:
Obtain the grayscale value to be shown of the corresponding pixel of each sub-pixel；
When obtaining the first reception of the preset data signal of the high level of corresponding sub-pixel according to the grayscale value to be shown
Long and the low level preset data signal second receives duration；Wherein the preset data signal has high level and low
Level；
The preset data signal is inputted to the corresponding sub-pixel, and is connect in the first reception duration and described second
It is connect respectively to the scanning signal of the corresponding sub-pixel input high level so that the corresponding sub-pixel receives first in time receiving is long
The low level preset data signal of the preset data signal of the high level of time receiving length and the second reception duration, with aobvious
Show the picture to be shown.
In the driving method of display panel of the invention, when the grayscale value to be shown is greater than preset gray scale value, institute
It states the first reception duration and is greater than the second reception duration.
In the driving method of display panel of the invention, when the grayscale value to be shown is less than or equal to preset gray scale value
When, described first, which receives duration, is less than or equal to the second reception duration.
In the driving method of display panel of the invention, in same frame picture, the present count of the high level it is believed that
Number input time covering it is described first receive duration；The input time covering described the of the low level preset data signal
Two receive duration.
In the driving method of display panel of the invention, the preset data signal is high level, institute at the first moment
It is high level that scanning signal, which is stated, at the second moment, and first moment is earlier than second moment.
In the driving method of display panel of the invention, the preset data signal is low level, institute at the third moment
It is high level that scanning signal, which is stated, at the 4th moment, and the third moment is earlier than the 4th moment.
The present invention provides a kind of driving device of display panel, and wherein display panel includes multiple sub-pixels；The display
Panel is for showing picture to be shown；The sub-pixel is corresponding with the pixel in the picture to be shown；The device includes:
Grayscale obtains module, for obtaining the grayscale value to be shown of the corresponding pixel of each sub-pixel；
Duration obtains module, the preset data of the high level for obtaining corresponding sub-pixel according to the grayscale value to be shown
The first of signal receives duration and the second of the low level preset data signal and receives duration；The wherein preset data letter
Number have high level and low level；
Input module, for inputting the preset data signal to the corresponding sub-pixel, and when described first receives
Respectively to the scanning signal of the corresponding sub-pixel input high level in the long and described second reception duration, so that the corresponding son
Pixel receives the preset data signal for the high level that first receives duration and second and receives the described low level pre- of duration
If data-signal, to show the picture to be shown.
In the driving device of display panel of the invention, when the grayscale value to be shown is greater than preset gray scale value, institute
It states the first reception duration and is greater than the second reception duration.
In the driving device of display panel of the invention, when the grayscale value to be shown is less than or equal to preset gray scale value
When, described first, which receives duration, is less than or equal to the second reception duration.
In the driving device of display panel of the invention, in same frame picture, the present count of the high level it is believed that
Number input time covering it is described first receive duration；The input time covering described the of the low level preset data signal
Two receive duration.
The driving method and device of display panel of the invention, by obtaining the to be shown of the corresponding pixel of each sub-pixel
Grayscale value；First that the preset data signal of the high level of corresponding sub-pixel is obtained according to the grayscale value to be shown receives duration
Duration is received with the second of the low level preset data signal；Input the present count to the corresponding sub-pixel it is believed that
Number, and the sweeping to the corresponding sub-pixel input high level respectively in the first reception duration and the second reception duration
Signal is retouched, so that the corresponding sub-pixel receives the preset data signal for the high level that first receives duration and second and receives duration
Low level preset data signal, to show the picture to be shown, since each sub-pixel inputs identical preset data
Signal avoids the occurrence of color tracking and color offset so that liquid crystal pressure difference is identical, improves display effect.
[Detailed description of the invention]
Fig. 1 is the drive waveforms figure of existing pixel；
Fig. 2 is the drive waveforms figure of high gray pixel of the present invention；
Fig. 3 is the drive waveforms figure of the low greyscale pixel of the present invention.
Fig. 4 is that the invention shows the structural schematic diagrams of the driving device of panel.
[specific embodiment]
The explanation of following embodiment is to can be used to the particular implementation of implementation to illustrate the present invention with reference to additional schema
Example.The direction term that the present invention is previously mentioned, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outside", " side "
Deng being only the direction with reference to annexed drawings.Therefore, the direction term used be to illustrate and understand the present invention, rather than to
The limitation present invention.The similar unit of structure is to be given the same reference numerals in the figure.
As shown in Figure 1, abscissa indicates the time in Fig. 1, ordinate indicates voltage, and existing display panel includes multiple sons
Pixel, each sub-pixel input has data-signal 11 and scanning signal 12, during driving, by inputting to each sub-pixel
The data-signal 11 of different voltages, to be presented different gray scale colors, but due to the liquid crystal pressure difference of each sub-pixel (namely data
Pressure difference between the voltage and common voltage 13 of signal 11) influence, cause liquid crystal to topple over situation difference, thus be easy to appear face
Color tracks (color tracking) phenomenon.
It is referring to figure 2. the drive waveforms figure of high gray pixel of the present invention to 3, Fig. 2.
As shown in Fig. 2 to 3, for display panel of the invention for showing picture to be shown, which includes multiple sub-pixels,
Each sub-pixel input has data-signal 21 and scanning signal 22,32, and furthermore each pixel, which also inputs, common voltage 13.
The driving method of display panel of the invention includes:
S101, the grayscale value to be shown for obtaining the corresponding pixel of each sub-pixel；
For example, wherein each sub-pixel is corresponding with the pixel in picture to be shown, each pixel has a grayscale value, namely
Grayscale value to be shown.Specifically, the grayscale value of the corresponding pixel of each sub-pixel is obtained.
S102, it is connect according to the first of the preset data signal of the high level of the grayscale value to be shown setting corresponding sub-pixel
Time receiving, long second with the low level preset data signal received duration；
Wherein, the preset data signal has high level and low level.The preset data signal is square-wave signal.
For example, connecing for the preset data signal of the high level is arranged according to the grayscale value of the corresponding pixel of each sub-pixel
The reception duration of time receiving long (first receives duration) and low level preset data signal (second receives duration).Namely every height
The actual data signal of pixel is obtained according to preset data signal.Specifically, the high level for receiving duration according to first
Preset data signal and the low level preset data signal of the second reception duration generate the actual data signal of corresponding sub-pixel
, so that each pixel inputs identical preset data signal, so that liquid crystal pressure difference is equal.
S103, it inputs the preset data signal to the corresponding sub-pixel, and receives duration and described described first
Second receives respectively to the scanning signal of the corresponding sub-pixel input high level in duration, so that the corresponding sub-pixel receives
First, which receives the preset data signal of the high level of duration and second, receives the low level preset data signal of duration, with display
The picture to be shown.
There are two types of pixel, the biggish pixel of grayscale value and the lesser pixels of grayscale value for usual display panel tool, classify below
It is illustrated.
In one embodiment, as shown in Fig. 2, by taking single pixel as an example, the grayscale value of the corresponding pixel of the sub-pixel
The larger namely described grayscale value to be shown is greater than preset gray scale value.The preset data signal of sub-pixel input is 21, input
Scanning signal 22, common voltage 13.
Specifically, the preset data signal 21 is inputted to the corresponding sub-pixel, and receives duration t1 described first
With it is described second receive duration t2 in the corresponding sub-pixel input high level scanning signal 22 so that the sub-pixel receive
There are the preset data signal 21 of the high level of the first reception duration t1 and the low level preset data of the second reception duration t2
Signal 21, the voltage of the preset data signal 21 of high level are V2, and the voltage of low level preset data signal 21 is V1, thus
According to the synthesis of V2 and V1, showing has the pixel of setting grayscale.
Wherein, it is received in duration t1 described first, the preset data signal 21 is high level；It is received described second
In duration t2, the preset data signal 21 is low level.And in same frame picture, the preset data signal of the high level
21 input time (time that source driving chip exports the preset data signal) covering described first receives duration t1, low electricity
The input time covering described second of the flat preset data signal 21 receives duration t2.The scanning signal 22 is at second
It carves and the 4th moment was high level, the preset data signal 21 is high level at the first moment, and the scanning signal 22 exists
Second moment was high level, and first moment is earlier than second moment.The preset data signal 21 is at the third moment
Low level, the scanning signal are also high level at the 4th moment, and the third moment is earlier than the 4th moment.Namely it is sweeping
Signal 22 is retouched as before high level (A moment), preset data signal 21 has been high level.It is high level (B in scanning signal 22
Moment) before, preset data signal 21 has been low level.
When the grayscale value to be shown is greater than preset gray scale value, described first, which receives duration t1, is greater than second reception
Duration t2.
In another embodiment, as shown in figure 3, the grayscale value of the corresponding pixel of the sub-pixel is smaller.That is, described
Grayscale value to be shown is less than or equal to preset gray scale value.The data-signal of sub-pixel input is also 21, the scanning signal of input
32, common voltage 13.
Sub-pixel input has the preset data signal of the high level of t3 duration and the low level present count of t4 duration
It is believed that number, the voltage of the preset data signal of high level is V2, and the voltage of low level preset signals is V1, thus according to V2 and
The synthesis of V1, to show the pixel with setting grayscale.The driving method of remaining sub-pixel is identical as the sub-pixel of Fig. 2 or Fig. 3,
And each sub-pixel inputs identical preset data signal, only the high level of each sub-pixel and low level present count it is believed that
Numbers 21 receiving time length is different.Duration is received herein it is to be understood that when scanning signal is high level, actually enters son
The duration of preset data signal in pixel.
Specifically, the preset data signal 21 is inputted to the sub-pixel, and receive duration t3 and described described first
Second receives the scanning signal 32 in duration t4 to the sub-pixel input high level, receives so that the sub-pixel receives first
The low level preset data signal 21 of the preset data signal 21 of the high level of duration t3 and the second reception duration t4.
Wherein, when the grayscale value to be shown is less than or equal to preset gray scale value, the first reception duration t3 is less than
Or it is equal to described second and receives duration t4.The driving method of remaining sub-pixel is identical with this, and then shows entire picture to be shown.
It is received in duration t3 described first, the preset data signal 21 is high level；Duration is received described second
In t4, the preset data signal 21 is low level.And in same frame picture, the preset data signal 21 of the high level
Input time covering described first receives duration t3, the input time covering described the of the low level preset data signal 21
Two receive duration t4.The scanning signal 32 is high level at the second moment and the 4th moment, the preset data signal 21
It is high level at the first moment, the scanning signal 32 is high level at the second moment, and first moment is earlier than described second
Moment.The preset data signal 21 is low level at the third moment, and the scanning signal 32 is also high level at the 4th moment,
The third moment is earlier than the 4th moment.Namely before scanning signal is high level (C moment), preset data signal 21
It has been high level.Before scanning signal is high level (D moment), preset data signal 21 has been low level.
Since each pixel inputs same preset data signal, thus when according to the opening of the preset data signal of the high level
Between (time for actually entering pixel) and low level opening time, collocation form grayscale, namely the practical reception according to pixel
The preset data signal of the high level arrived and low level preset data signal synthesis form the grayscale of respective pixel, whole to show
A picture, so that liquid crystal topples over that situation is identical, so that picture keeps the same gray scale color, to avoid the occurrence of
Color tracking and color offset, improve display effect.
As shown in figure 4, the present invention also provides a kind of driving devices 40 of display panel comprising: grayscale acquisition module 41,
Duration obtains module 42 and input module 43.
Grayscale obtains the grayscale value to be shown that module 41 is used to obtain the corresponding pixel of each sub-pixel.
Duration obtains the present count that module 42 is used to obtain the high level of corresponding sub-pixel according to the grayscale value to be shown
It is believed that number first receive the second of duration and the low level preset data signal and receive duration；The wherein preset data
Signal has high level and low level.
Input module 43 is used to input the preset data signal to the corresponding sub-pixel, and when described first receives
Respectively to the scanning signal of the corresponding sub-pixel input high level in the long and described second reception duration, so that the corresponding son
Pixel receives the preset data signal for the high level that first receives duration and second and receives the described low level pre- of duration
If data-signal, to show the picture to be shown.
Wherein, when the grayscale value to be shown is greater than preset gray scale value, described first, which receives duration, is greater than described second
Receive duration.
Wherein, when the grayscale value to be shown be less than or equal to preset gray scale value when, it is described first reception duration be less than or
Duration is received equal to described second.
Wherein, in same frame picture, the input time covering described first of the preset data signal of the high level is connect
Time receiving is long；The input time covering described second of the low level preset data signal receives duration.
Wherein, the preset data signal is high level at the first moment, and the scanning signal is high electricity at the second moment
Flat, first moment is earlier than second moment.
The preset data signal is low level at the third moment, and the scanning signal is high level, institute at the 4th moment
The third moment is stated earlier than the 4th moment.
The driving method and device of display panel of the invention, by obtaining the to be shown of the corresponding pixel of each sub-pixel
Grayscale value；First that the preset data signal of the high level of corresponding sub-pixel is obtained according to the grayscale value to be shown receives duration
Duration is received with the second of the low level preset data signal；Input the present count to the corresponding sub-pixel it is believed that
Number, and the sweeping to the corresponding sub-pixel input high level respectively in the first reception duration and the second reception duration
Signal is retouched, so that the corresponding sub-pixel receives the preset data signal for the high level that first receives duration and second and receives duration
Low level preset data signal, to show the picture to be shown, since each sub-pixel inputs identical preset data
Signal avoids the occurrence of color tracking and color offset so that liquid crystal pressure difference is identical, improves display effect.
In conclusion although the present invention has been disclosed above in the preferred embodiment, but above preferred embodiment is not to limit
The system present invention, those skilled in the art can make various changes and profit without departing from the spirit and scope of the present invention
Decorations, therefore protection scope of the present invention subjects to the scope of the claims.
Claims (10)
1. a kind of driving method of display panel, which is characterized in that wherein display panel includes multiple sub-pixels；The display surface
Plate is for showing picture to be shown；The sub-pixel is corresponding with the pixel in the picture to be shown；The described method includes:
Obtain the grayscale value to be shown of the corresponding pixel of each sub-pixel；
Obtained according to the grayscale value to be shown the first of the preset data signal of the high level of corresponding sub-pixel receive duration and
The second of the low level preset data signal receives duration；Wherein the preset data signal has high level and low electricity
It is flat；
The preset data signal is inputted to the corresponding sub-pixel, and when described first receives duration and second reception
Respectively to the scanning signal of the corresponding sub-pixel input high level in long, when so that the corresponding sub-pixel receiving the first reception
The low level preset data signal of the preset data signal of the long high level and the second reception duration, to show
State picture to be shown.
2. the driving method of display panel according to claim 1, which is characterized in that when the grayscale value to be shown is greater than
When preset gray scale value, described first, which receives duration, is greater than the second reception duration.
3. the driving method of display panel according to claim 1, which is characterized in that when the grayscale value to be shown is less than
Or when being equal to preset gray scale value, described first, which receives duration, is less than or equal to the second reception duration.
4. the driving method of display panel according to claim 1, which is characterized in that in same frame picture, the height
The input time covering described first of the preset data signal of level receives duration；The low level preset data signal it is defeated
Angle of incidence covering described second receives duration.
5. the driving method of display panel according to claim 4, which is characterized in that
The preset data signal is high level at the first moment, and the scanning signal is high level at the second moment, described the
One moment is earlier than second moment.
6. the driving method of display panel according to claim 4, which is characterized in that
The preset data signal is low level at the third moment, and the scanning signal is high level at the 4th moment, described the
Three moment are earlier than the 4th moment.
7. a kind of driving device of display panel, which is characterized in that wherein display panel includes multiple sub-pixels；The display surface
Plate is for showing picture to be shown；The sub-pixel is corresponding with the pixel in the picture to be shown；Described device includes:
Grayscale obtains module, for obtaining the grayscale value to be shown of the corresponding pixel of each sub-pixel；
Duration obtains module, the preset data signal of the high level for obtaining corresponding sub-pixel according to the grayscale value to be shown
First receive the second of duration and the low level preset data signal and receive duration；The wherein preset data signal tool
There are high level and low level；
Input module, for inputting the preset data signal to the corresponding sub-pixel, and described first receive duration and
Described second receives in duration respectively to the scanning signal of the corresponding sub-pixel input high level, so that the corresponding sub-pixel
Receive the preset data signal for the high level that first receives duration and the low level present count of the second reception duration
It is believed that number, to show the picture to be shown.
8. the driving device of display panel according to claim 7, which is characterized in that when the grayscale value to be shown is greater than
When preset gray scale value, described first, which receives duration, is greater than the second reception duration.
9. the driving device of display panel according to claim 7, which is characterized in that when the grayscale value to be shown is less than
Or when being equal to preset gray scale value, described first, which receives duration, is less than or equal to the second reception duration.
10. the driving device of display panel according to claim 7, which is characterized in that
In same frame picture, the input time covering described first of the preset data signal of the high level receives duration；Institute
The input time covering described second for stating low level preset data signal receives duration.
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| CN201811253408.4A CN109285512B (en) | 2018-10-25 | 2018-10-25 | Driving method and device of display panel |
| PCT/CN2018/117035 WO2020082482A1 (en) | 2018-10-25 | 2018-11-22 | Method and device for driving a display panel |
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| CN201811253408.4A CN109285512B (en) | 2018-10-25 | 2018-10-25 | Driving method and device of display panel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113971936A (en) * | 2020-07-23 | 2022-01-25 | 京东方科技集团股份有限公司 | Display panel and driving method thereof |
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- 2018-11-22 WO PCT/CN2018/117035 patent/WO2020082482A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113971936A (en) * | 2020-07-23 | 2022-01-25 | 京东方科技集团股份有限公司 | Display panel and driving method thereof |
| CN113971936B (en) * | 2020-07-23 | 2023-09-29 | 京东方科技集团股份有限公司 | Display panel and driving method thereof |
Also Published As
| Publication number | Publication date |
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| WO2020082482A1 (en) | 2020-04-30 |
| CN109285512B (en) | 2020-05-12 |
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