CN108417184A - Display device and gray scale compensation method of display panel - Google Patents
Display device and gray scale compensation method of display panel Download PDFInfo
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- CN108417184A CN108417184A CN201810228418.6A CN201810228418A CN108417184A CN 108417184 A CN108417184 A CN 108417184A CN 201810228418 A CN201810228418 A CN 201810228418A CN 108417184 A CN108417184 A CN 108417184A
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000009826 distribution Methods 0.000 description 12
- 239000004973 liquid crystal related substance Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 101100172874 Caenorhabditis elegans sec-3 gene Proteins 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 241001270131 Agaricus moelleri Species 0.000 description 1
- 101150092843 SEC1 gene Proteins 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
Classifications
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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
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3696—Generation of voltages supplied to electrode drivers
-
- 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
- G09G3/3614—Control of polarity reversal in general
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
A display device and a gray scale compensation method of a display panel are provided. The time schedule controller detects the position of the pixel with the same polarity in the display periods of two adjacent pictures on the display panel and carries out gray scale compensation on the pixel with the same polarity in the display periods of two adjacent pictures.
Description
Technical field
The invention relates to a kind of electronic devices, and in particular to a kind of display equipment and the grayscale of display panel
Compensation method.
Background technology
For in response to modern product high speed, high-effect and light and short requirement, each electronic component is all energetically towards volume
Miniaturization.Various portable electronic equipments also gradually at mainstream, such as：Laptop (Note Book), mobile phone
(Cell Phone), e-dictionary, personal digital aid (PDA) (Personal Digital Assistant, PDA), device for logging on network
(web pad) and Tablet PC (Tablet PC) etc..For the image display panel of portable electronic equipment, it is
Meet the demand that product tends to miniaturization, has good space efficiency utilization, high image quality, low consumpting power, radiationless etc. superior
The liquid crystal display panel of characteristic, has been widely used at present.
The direction of rotation of liquid crystal is related with the electric field for being provided to liquid crystal, in order to exclude to be stored in the residual electricity of the direct current in liquid crystal
Press and avoid liquid crystal polarization, liquid crystal can be driven in such a way that polarity inverts, that is to say, that opposed polarity (such as positive polarity with it is negative
Polarity) driving voltage can in different frames alternately be supplied to pixel.The type of drive of polarity reversion is then for example following several：
Column inversion (column inversion), row reversion (row inversion), face reversion (frame inversion) and point are anti-
Turn (dot inversion).
Under the application scenarios of part (such as when testing display equipment), display device needs switch polarity to invert
Type of drive.Since the type of drive that different polarity inverts corresponds to different pixel polarity distributions, the drive of switch polarity reversion
Same pixel polar situation having the same in adjacent frame will likely occur in flowing mode, wherein having phase in consecutive frame
Moment on a display panel is showed the bright band of vertical distribution by same polar pixel, and picture brightness is caused to be unevenly distributed
Flashing state.
Invention content
The present invention provides the driving method of a kind of display device and display panel, can be effectively prevented from display device and switch
There is film flicker situation when the type of drive of polarity reversion.
The display device of the present invention includes display panel and sequence controller.Sequence controller detect display panel on
The position of pixel with identical polar during two neighboring picture is shown, and to having phase during two neighboring picture is shown
The pixel of same polarity carries out gray scale compensation.
In one embodiment of this invention, above-mentioned sequence controller also detects the polarity inversion driving mode of display panel
Shift gears, and the corresponding look-up table that shifts gears according to polarity inversion driving mode judges to show in two neighboring picture
There is the position of the pixel of identical polar during showing.
In one embodiment of this invention, wherein sequence controller during two neighboring picture is shown in second picture
The gray-scale intensity of the pixel with identical polar during two neighboring picture is shown is reduced during face.
In one embodiment of this invention, wherein sequence controller also stores the multiple default of corresponding multiple data grayscale values
Gray scale compensation value, sequence controller also select corresponding preset gray scale offset according to the data grayscale value of its pixel driven
Carry out gray scale compensation.
In one embodiment of this invention, wherein sequence controller also according to the data grayscale value of its pixel driven into
Row interpolative operation, to obtain the gray scale compensation value of the data grayscale value for the pixel that corresponding sequence controller is driven, and according to meter
Obtained gray scale compensation value carries out gray scale compensation.
The present invention also provides a kind of gray level compensation methods of display panel, include the following steps：Detect display panel on
The position of pixel with identical polar during two neighboring picture is shown；It is identical to having during two neighboring picture is shown
Polar pixel carries out gray scale compensation.
In one embodiment of this invention, the gray level compensation method of above-mentioned display panel includes the following steps：Detection is aobvious
Show shifting gears for the polarity inversion driving mode of panel.The corresponding lookup that shifts gears according to polarity inversion driving mode
Table judges the position of the pixel with identical polar during two neighboring picture is shown.
In one embodiment of this invention, the gray level compensation method of above-mentioned display panel includes, in two neighboring picture
The grayscale of the pixel with identical polar during two neighboring picture is shown is reduced during second picture in during display
Brightness.
In one embodiment of this invention, the gray level compensation method of above-mentioned display panel includes：According to the picture driven
The data grayscale value of element selects corresponding preset gray scale offset to carry out gray scale compensation from multiple preset gray scale offsets.
In one embodiment of this invention, the gray level compensation method of above-mentioned display panel includes the following steps：According to institute
The data grayscale value and preset gray scale offset of the pixel of driving carry out interpolative operation, to obtain corresponding driven pixel
The gray scale compensation value of data grayscale value；Gray scale compensation is carried out according to the gray scale compensation value being calculated.
Based on above-mentioned, on the sequence controller detection display panel of the embodiment of the present invention during two neighboring picture is shown
The position of pixel with identical polar, and grayscale is carried out to the pixel with identical polar during two neighboring picture is shown
, there is film flicker situation to avoid display device in the type of drive that switch polarity inverts in compensation.
To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and it is detailed to coordinate attached drawing to make
Carefully it is described as follows.
Description of the drawings
Fig. 1 is the schematic diagram according to a kind of display device of the embodiment of the present invention.
Fig. 2 is show when being driven corresponding pixel of the scan line in consecutive frame on display panel polar
Schematic diagram.
Fig. 3 is the flow chart according to a kind of method of display panel of the embodiment of the present invention.
Specific implementation mode
Fig. 1 is to please refer to Fig. 1 according to a kind of schematic diagram of display device of the embodiment of the present invention.Display device includes aobvious
Show that panel 120 and display driver, display driver can be for example including gate drivers 122, source electrode driver 124 with timely
Sequence controller 126.Display panel 120 has multiple pixels (not indicating) of array arrangement, gate drivers 122, source drive
Device 124 couples display panel 120 and provides drive signal respectively to display panel 120, to drive display by drive signal
Scan line (not indicating) on panel 120 and data line (not indicating), to show image to display.Sequence controller 126
It is coupled to gate drivers 122, source electrode driver 124 and provides control signal to make gate drivers 122, source electrode driver
124 generate drive signal.
Fig. 2 shows the polarity of when being driven corresponding pixel of the scan line in consecutive frame on display panel 120
Implementation example, referring to Fig. 1 and Fig. 2.In fig. 2, multiple pixel P1 corresponding to scan line (not indicating) are wrapped respectively
Include e.g. be displayed in red, sub-pixel P1R, P1G and P1B of green and blue, but invention is not limited thereto, as shown in Fig. 2,
Sub-pixel in scan line (not indicating) is alternately arranged configuration with the sequence of P1R, P1G and P1B along the extending direction of scan line.
In the present embodiment, the type of drive that the pixel P1 on the N+1 frame scan line (not indicating) is inverted with 1V is driven, and
The N+2 frame is then driven with the 1V+ type of drive inverted, and wherein N is 0 or positive integer.The type of drive of wherein 1V reversions makes
Adjacent pixel has opposite polarity in scan line (not indicating), and the type of drive of 1V+ reversions then (does not mark scan line
Show) on pixel P1 divide into multiple display blocks, wherein each display block include 16 pixel P1 (such as:48 sub- pictures
Element), adjacent pixel has different polarity in each display block, and adjacent sub-pixel has different polarity, this
Outside, the pixel polarity having the same of two neighboring display block joint.
As shown in Fig. 2, since the type of drive of 1V reversions merely makes pixel P1 tools adjacent in scan line (not indicating)
There is opposite polarity, and the pixel P1 that the type of drive of 1V+ reversions keeps scanning online every 16 pixel P1 to convert primary pole
Property distribution mode (such as in the N+2 frame, the pixel pole of the pixel polarity of display block sec1 distribution and display block sec2
Property distribution on the contrary, the pixel polarity distribution of display block sec2 is distributed with the pixel polarity of display block sec3 on the contrary, viewing area
The pixel polarity distribution of section sec3 is opposite with the distribution of the pixel polarity of display block sec4), therefore in display block sec2 and show
Show the pixel P1 of section sec4 will appear in consecutive frame with identical polar situation, so will so that display block sec2 with
The effect of brightness enhancing is presented in the pixel P1 of display block sec4 in the N+2 frame, so that display panel 102 is in N+
There is the bright band of vertical distribution in 2 frames, the flashing state for causing picture brightness to be unevenly distributed.
To avoid such situation from occurring, sequence controller 126 can detect and be shown in two neighboring picture on display panel 102
Period has the position of the pixel P1 of identical polar, and to the pixel P1 with identical polar during two neighboring picture is shown
Gray scale compensation is carried out, has the pixel P1 of identical polar in two two neighboring pictures during two neighboring picture is shown to reduce
The luminance difference that face is presented during showing.Such as sequence controller 126 can detect the polarity inversion driving mode of display panel 102
Shift gears, judge during two neighboring picture is shown with same pole according to shifting gears for polarity inversion driving mode
Property pixel P1 position, and during two neighboring picture is shown in second picture during reduce in two neighboring picture
The gray-scale intensity of pixel P1 with identical polar during display.Wherein sequence controller 126 can for example store a look-up table, look into
Look for table may include polarity inversion driving mode shift gears it is corresponding during two neighboring picture show with same pole
The location information of the pixel P1 of property.Such sequence controller 126 can be in the polarity reverse drive side for detecting display panel 102
When formula changes, the corresponding look-up table that shifts gears according to polarity inversion driving mode judges to show the phase in two neighboring picture
Between with identical polar pixel P1 position.
For example, in Fig. 2 embodiments, when sequence controller 126 detects the driving that display panel 102 is inverted by 1V
Mode switch to 1V+ reversion type of drive when, sequence controller 126 can shift gears according to polarity inversion driving mode pair
The look-up table answered judges the position of the pixel P1 with identical polar in two neighboring frame.Judging that there is identical polar
After the position of pixel P1 falls within display block sec2 and display block sec4, sequence controller 126 can reduce in the N+2 frame
The gray-scale intensity for falling within the pixel P1 of display block sec2 and display block sec4, to improve display panel 102 in the N+2 frame
The middle flashing state for the bright band of vertical distribution occur and picture brightness being caused to be unevenly distributed.
In some embodiments, sequence controller 126 can also store multiple preset gray scales of corresponding multiple data grayscale values
Offset, when carrying out gray scale compensation to pixel P1, sequence controller 126 can be according to the data grayscale value of its driven pixel P1
Corresponding preset gray scale offset is selected to carry out gray scale compensation.Due to the preset gray scale offset stored by sequence controller 126
Number possibly can not correspond to all grayscale values, in some embodiments, if the number of 126 driven pixel of sequence controller
When being not included in the preset gray scale offset stored by sequence controller 126 according to grayscale value, sequence controller 126 can be according to it
The data grayscale value of the pixel P1 driven and the preset gray scale offset stored by sequence controller 126 carry out interpolation fortune
It calculates, to obtain the gray scale compensation value of the data grayscale value for the pixel P1 that corresponding sequence controller 126 is driven, and foundation calculates
Gray scale compensation value carry out gray scale compensation.
Though it is worth noting that, above-described embodiment by 1V invert and 1V+ reversion polarity inversion driving mode for into
Row explanation, however the disclosure does not limit the polarity inversion driving mode for being applicable only to 1V and 1V+, it is other different types of
Polarity inversion driving mode (such as polarity inversion driving mode of 2V+1 reversions) is equally applicable for the disclosure, wherein 2V+1 reversions
Type of drive divide into multiple display blocks by online pixel P1 is scanned, wherein each display block include two polarity phases
Anti- sub-pixel, and the sub-pixel polarity having the same of two neighboring display block joint.
Fig. 3 is to please refer to Fig. 3 according to a kind of flow chart of the gray level compensation method of display panel of the embodiment of the present invention.
By above-described embodiment it is found that the gray level compensation method of display panel may include the following steps：First, it detects on display panel in phase
The position (step S302) of the pixel P1 with identical polar, for example can detect display panel during adjacent two pictures are shown
The shifting gears of polarity inversion driving mode (such as the polarity inversion driving mode inverted by 1V switchs to the polarity of 1V+ reversions
Inversion driving mode), and the corresponding lookup table search that shifts gears according to polarity inversion driving mode is in two neighboring picture
The position of pixel P1 with identical polar during face is shown.Then, to having same pole during two neighboring picture is shown
Property pixel P1 carry out gray scale compensation (step S304), to reduce the picture during two neighboring picture show with identical polar
The luminance difference that plain P1 is presented during two two neighboring pictures are shown.Such as can be during two neighboring picture be shown in
The gray-scale intensity that the pixel P1 with identical polar during two neighboring picture is shown is reduced during second picture, to reduce
The pixel P1 with identical polar is presented during two two neighboring pictures are shown during two neighboring picture is shown
Luminance difference.In some embodiments, it when carrying out gray scale compensation to pixel, can be selected according to the data grayscale value of its driven pixel
It selects corresponding preset gray scale offset and carries out gray scale compensation, or the data grayscale value according to the pixel P1 driven and default ash
Rank offset carries out interpolative operation, to obtain the gray scale compensation value of the data grayscale value of corresponding driven pixel P1, Jin Erke
Gray scale compensation is carried out according to calculated gray scale compensation value.
In conclusion the sequence controller of the embodiment of the present invention can detect shows the phase on display panel in two neighboring picture
Between the pixel with identical polar position, and the pixel with identical polar during two neighboring picture show is carried out grey
Rank compensates, and the bright band of vertical distribution occurs in the type of drive that switch polarity inverts to avoid display device, and causes picture
The flashing state of Luminance Distribution unevenness.
【Symbol description】
120：Display panel
122：Gate pole driver
124：Source electrode driver
126：Sequence controller
P1：Pixel
P1R、P1G、P1B：Sub-pixel
Sec1~sec4：Display block
N+1、N+2：The N+1 frame, the N+2 frame
S302、S304：The step of gray level compensation method
Claims (10)
1. a kind of display device, including：
One display panel；And
Time schedule controller detects the position of the pixel with identical polar during two neighboring picture is shown on the display panel
It sets, and gray scale compensation is carried out to the pixel with identical polar during the two neighboring picture is shown.
2. the polarity reversion that display device as described in claim 1, the wherein sequence controller also detect the display panel is driven
Flowing mode shifts gears, and the corresponding look-up table that shifts gears according to the polarity inversion driving mode judge it is adjacent at this
The position of pixel with identical polar during two pictures are shown.
During 3. display device as described in claim 1, the wherein sequence controller are during the two neighboring picture is shown
The gray-scale intensity of the pixel with identical polar during the two neighboring picture is shown is reduced during second picture.
4. display device as described in claim 1, the wherein sequence controller also store the more of corresponding multiple data grayscale values
A preset gray scale offset, the sequence controller also select corresponding default ash according to the data grayscale value of its pixel driven
Rank offset carries out gray scale compensation.
5. display device as claimed in claim 4, the wherein sequence controller are also according to the data of its pixel driven ash
Rank value carries out interpolative operation, to obtain the gray scale compensation value of the data grayscale value for the pixel that the corresponding sequence controller is driven,
And carry out gray scale compensation according to the gray scale compensation value being calculated.
6. a kind of gray level compensation method of display panel, including：
Detect the position of the pixel with identical polar during two neighboring picture is shown on the display panel；And
Gray scale compensation is carried out to the pixel with identical polar during the two neighboring picture is shown.
7. the gray level compensation method of display panel as claimed in claim 6, including：
Detect shifting gears for the polarity inversion driving mode of the display panel；And
The corresponding look-up table that shifts gears according to the polarity inversion driving mode judged in the two neighboring display picture phase
Between with identical polar pixel position.
8. the gray level compensation method of display panel as claimed in claim 6, including：
It reduces during second picture in during the two neighboring picture is shown and has during the two neighboring picture is shown
There is the gray-scale intensity of the pixel of identical polar.
9. the gray level compensation method of display panel as claimed in claim 6, including：
Data grayscale value according to the pixel driven selects corresponding preset gray scale to compensate from multiple preset gray scale offsets
Value carries out gray scale compensation.
10. the gray level compensation method of display panel as claimed in claim 9, including：
Interpolative operation is carried out according to the data grayscale value of the pixel driven and those preset gray scale offsets, to obtain correspondence
The gray scale compensation value of the data grayscale value of the pixel driven；And
Gray scale compensation is carried out according to the gray scale compensation value being calculated.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW107101385 | 2018-01-15 | ||
| TW107101385A TWI662524B (en) | 2018-01-15 | 2018-01-15 | Display apparatus and gray level compensation method of display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108417184A true CN108417184A (en) | 2018-08-17 |
| CN108417184B CN108417184B (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810228418.6A Active CN108417184B (en) | 2018-01-15 | 2018-03-20 | Display device and gray scale compensation method of display panel |
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| Country | Link |
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| CN (1) | CN108417184B (en) |
| TW (1) | TWI662524B (en) |
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| CN109584827A (en) * | 2018-12-24 | 2019-04-05 | 惠科股份有限公司 | Panel picture display method and computer readable storage medium |
| CN110085182A (en) * | 2019-04-17 | 2019-08-02 | 深圳市华星光电技术有限公司 | Pixel charging method and display device |
| CN113936615A (en) * | 2021-09-28 | 2022-01-14 | 歌尔光学科技有限公司 | Image display method, image display system, display device, head-mounted display device, and medium |
| WO2022027761A1 (en) * | 2020-08-07 | 2022-02-10 | 深圳市华星光电半导体显示技术有限公司 | Method and apparatus for improving fault phenomenon of liquid crystal display panel, and display panel |
| TWI823078B (en) * | 2021-04-22 | 2023-11-21 | 大陸商集創北方（珠海）科技有限公司 | Source driver chips that can reduce heat energy generation and liquid crystal displays and information processing devices that utilize them |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108417184B (en) | 2021-10-08 |
| TW201933307A (en) | 2019-08-16 |
| TWI662524B (en) | 2019-06-11 |
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