CN105931591B - A kind of adjustment method of display panel - Google Patents
A kind of adjustment method of display panel Download PDFInfo
- Publication number
- CN105931591B CN105931591B CN201610528273.2A CN201610528273A CN105931591B CN 105931591 B CN105931591 B CN 105931591B CN 201610528273 A CN201610528273 A CN 201610528273A CN 105931591 B CN105931591 B CN 105931591B
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- pixel
- row
- pixel unit
- brightness
- display panel
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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
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
-
- 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
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
Abstract
The present invention provides a kind of adjustment method of display panel, comprising: provides a display panel, the display panel includes n row pixel unit and GIP driving circuit, and the GIP driving circuit exports scanning signal and pixel selection signal to the n row pixel unit；Every row pixel unit brightness is successively measured by the 1st row to line n direction, and every row pixel unit brightness is compared with standard pixel brightness；Record pixel unit brightness is lower than the line number x of standard pixel brightness for the first time, and is sent to GIP driving circuit；The GIP driving circuit is promoted to preset value to the scanning signal of line n pixel unit and the duty ratio of pixel selection signal according to the line number x received, by input xth row.GIP driving circuit adjusts xth row and the later duty ratio of the scanning signal of all row input pixel units and pixel selection signal, increase the charging time of pixel unit, so that in display panel each row pixel unit brightness uniformity, improve the display quality of display panel.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of adjustment methods of display panel.
Background technique
Organic electroluminescent display panel (OLED, Organic Light Emitting Diode) and liquid crystal display panel
(LCD, Liquid Crystal Display) is simple, at low cost with preparation process, luminous efficiency is high and easy formation is flexible
The advantages that structure, therefore have wide range of applications in existing display devices.
It is asked currently, all generally existing display brightness of organic electroluminescent display panel and liquid crystal display panel is non-uniform
Topic.By taking liquid crystal display panel as an example, liquid crystal display panel is mainly by array substrate, opposite substrate and between the two substrates
Liquid crystal layer composition；Wherein, grid line, data line, thin film transistor (TFT) (TFT, Thin Film are provided in array substrate
) and pixel electrode Transistor.In gate drive signal of the gate driving circuit to grid line input high potential, with grid line
The TFT of connection is in the open state, and source electrode drive circuit is applied to pixel by TFT to the source drive signal that data line loads
On electrode, charge to pixel electrode.During charging to pixel electrode, resistance existing for data line itself with
And the capacitor between data line and the pixel electrode of electric connection, it will lead to the source drive signal phase being loaded on pixel electrode
Exist for gate drive signal and postpone, also, the charging delay time of the pixel electrode remoter apart from source electrode drive circuit is more
Long, charging duration is shorter, and display brightness is darker.So that there are the non-uniform problems of display brightness for liquid crystal display panel, thus sternly
Ghost image rings the display quality of liquid crystal display panel.
Summary of the invention
The purpose of the present invention is to provide a kind of adjustment methods of display panel, can improve display panel by this method
The problem of brightness disproportionation, improves the display quality of display panel.
To achieve the goals above, embodiment of the present invention provides the following technical solutions:
The present invention provides a kind of adjustment method of display panel, comprising:
A display panel is provided, the display panel includes n row pixel unit and GIP driving circuit, the GIP driving electricity
N row pixel unit described in road direction exports scanning signal and pixel selection signal, wherein n > 1；
Within the display time of a frame, every row pixel unit brightness is successively measured by the 1st row to line n direction, and will be every
The brightness of row pixel unit is compared with standard pixel brightness, wherein the 1st row to line n pixel unit drives along far from the GIP
Dynamic circuit direction arrangement；
Record pixel unit brightness is lower than the line number x of standard pixel brightness for the first time, and is sent to GIP driving circuit；
The GIP driving circuit will input scanning signal of the xth row to line n pixel unit according to the line number x received
Preset value is promoted to the duty ratio of pixel selection signal.
Wherein, the pixel selection signal includes red pixel selection signal, green pixel selection signal and blue pixel selection letter
Number, red pixel, green pixel and blue pixel into pixel unit are exported respectively.
Wherein, input xth row is promoted to the scanning signal of line n pixel unit and the duty ratio of pixel selection signal
Specifically include during preset value: the GIP driving circuit believes the red pixel selection for inputting xth row to line n pixel unit
Number, the duty ratio of green pixel selection signal and blue pixel selection signal be successively promoted to preset value.
Wherein, within the display time of a frame, the GIP driving circuit is from the 1st row to line n direction successively to each row picture
Plain unit output scanning signal and pixel selection signal.
Wherein, after the display time of a frame, the GIP driving circuit is by the scanning signal and pixel selection signal
Duty ratio reverts to initial value.
Wherein, the duty ratio initial value of the scanning signal and pixel selection signal is preset value, and the standard pixel is bright
Degree is preset value.
Wherein, by color analysis instrument detect every one-row pixels unit brightness and with standard pixel brightness contrast.
Wherein, after record pixel unit brightness is lower than the line number x of standard pixel brightness for the first time, stop pixel unit brightness
Measurement.
Wherein, when the scanning signal and pixel selection signal that input pixel unit are simultaneously high level, data voltage pair
The pixel unit charges.
Wherein, line number x is transmitted in GIP driving circuit in such a way that data are written.
The embodiment of the present invention have the following advantages that or the utility model has the advantages that
The invention shows the adjustment method of panel by measure each row pixel unit brightness and with standard pixel brightness contrast,
Determine the line number for being lower than standard pixel brightness for the first time, then GIP driving circuit adjusts the row and later all row input pixel lists
The scanning signal of member and the duty ratio of pixel selection signal, increase the charging time of pixel unit, so that display panel
In each row pixel unit brightness uniformity, improve the display quality of display panel.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the adjustment method flow diagram the invention shows panel.
Fig. 2 is the time diagram of xth horizontal-drive signal.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiments shall fall within the protection scope of the present invention.
In addition, the explanation of following embodiment is referred to the additional illustration, the spy that can be used to implement to illustrate the present invention
Determine embodiment.Direction terms mentioned in the present invention, for example, "upper", "lower", "front", "rear", "left", "right", "inner",
"outside", " side " etc. are only the directions with reference to annexed drawings, and therefore, the direction term used is to more preferably, more clearly say
The bright and understanding present invention, rather than indicate or imply signified device or element and must have a particular orientation, with specific square
Position construction and operation, therefore be not considered as limiting the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, is also possible to detachably connected, or integrally connects
It connects；It can be mechanical connection；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The connection in portion.For the ordinary skill in the art, the tool of above-mentioned term in the present invention can be understood with concrete condition
Body meaning.
In addition, in the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.If this
Occur the term of " process " in specification, refers not only to independent process, when can not clearly be distinguished with other process, as long as
Effect desired by the process is able to achieve then to be also included in this term.In addition, the numerical value model indicated in this specification with "~"
Enclose the range for referring to that the numerical value for recording "~" front and back is included as minimum value and maximum value.In the accompanying drawings, structure
Similar or identical is indicated by the same numeral.
Referring to Fig. 1, the adjustment method of display panel of the invention specifically comprises the following steps:
S1: providing a display panel, and the display panel includes n row pixel unit and GIP driving circuit, and the GIP drives
Dynamic circuit is sequentially output scanning signal and pixel selection signal to the n row pixel unit, wherein n > 1.
Specifically, display panel includes driving chip (driver IC), a plurality of grid line along first direction arrangement, edge
The multiple data lines of vertical first direction arrangement, n row pixel unit, the corresponding grid line of every row pixel unit, the grid
GIP driving circuit (Gate in Pane, abbreviation GIP driving circuit) in line and driving chip connects.The GIP driving circuit
Scanning signal is exported in a manner of progressive scan, scanning signal passes through the gateline transmission to the pixel unit of corresponding row.It is excellent
Choosing, within the display time of a frame, the GIP driving circuit is successively defeated to each row pixel unit from the 1st row to line n direction
Scanning signal and pixel selection signal out.When the scanning signal on grid line is high level, grid line corresponds to the pixel in row
Unit is switched on, and the data voltage that data line provides is transmitted in the pixel unit.
Specifically, the pixel unit includes multiple sub-pixels, respectively red pixel, green pixel and blue pixel.GIP driving
Circuit also inputs pixel selection signal to the pixel unit, and the pixel selection signal includes red pixel selection signal, green picture
Plain selection signal and blue pixel selection signal, red pixel selection signal is to gate the red pixel in pixel unit, green pixel choosing
Signal is selected to gate the green pixel in pixel unit, blue pixel selection signal to gate the blue pixel in pixel unit.Institute
The data voltage being input in pixel unit is stated to charge to the sub-pixel of gating.
Referring to Fig. 2, in a specific embodiment, when GIP driving circuit scanning is to xth row.In a frame
The display time in, GIP driving circuit export to the scanning signal on the corresponding grid line of xth row be high level duration
For t1, data voltage is flowed into the pixel unit of xth row.Within the t11 time, GIP driving circuit output pixel selection signal is
Red pixel selection signal (i.e. red pixel selection signal is high level), then data voltage is advanced to the red pixel in the pixel unit
Row charging.After to the charging of red pixel, within the t12 time, GIP driving circuit output pixel selection signal is changed into green picture
Plain selection signal (i.e. green pixel selection signal is high level), data voltage charges to green pixel；Finally, in the t13 time
Interior, GIP driving circuit output pixel selection signal is changed into blue pixel selection signal, and data voltage charges to blue pixel,
Complete charging of the data voltage to the pixel unit.It is understood that under normal conditions, t11=t12=t13.Original state
When, the value of the t11 and t1 of the output of GIP driving circuit are preset value.That is, the scanning signal and pixel selection signal
Duty ratio initial value is preset value,
S2: within the display time of a frame, every row pixel unit brightness is successively measured by the 1st row to line n direction, and will
Every row pixel unit brightness is compared with standard pixel brightness.
In display panel, the n row pixel unit is successively arranged along the first direction, the 1st row to line n pixel list
Member is arranged along far from GIP driving circuit direction.That is, the 1st row pixel unit is compared with line n pixel unit close to described
GIP driving circuit (driving chip).Brightness closer to the pixel unit of the GIP driving circuit is higher.
Specifically, pixel unit brightness in every a line can be detected by color analysis instrument.Preferably, the color analysis
Instrument is on a display panel from the first row to line n angle detecting.Namely along each far from the GIP driving circuit angle detecting
The brightness of pixel unit on row.And the brightness of every one-row pixels unit is compared with standard pixel brightness.Standard pixel is bright
Degree is also a preset value.Its brightness size is less than the brightness of the first row pixel unit, such as can be the first row pixel unit
The 90% of brightness.
S3: record pixel unit brightness is lower than the line number x of standard pixel brightness for the first time, and is sent to GIP driving circuit.
If detecting, the brightness of the pixel unit of xth row is less than standard pixel brightness, records the line number x of the row at this time.This
When can not have to continue to measure remaining row pixel unit brightness.Because along the pixel far from GIP driving circuit direction
The descending luminance of unit.Therefore, the brightness of the pixel unit of remaining row is certainly less than standard pixel brightness.It is understood that
Wherein necessarily there is 1 < x≤n.
S4: the GIP driving circuit will input the scanning of xth row to line n pixel unit according to the line number x received
The duty ratio of signal and pixel selection signal is promoted to preset value.
Color analysis instrument detects that the row lower than after standard pixel brightness, is passed through data by the brightness of xth row pixel unit
The mode of write-in is transmitted in GIP driving circuit.It, will be defeated according to the line number information after GIP driving circuit receives the line number information
The duty ratio (Duty Cycle) for entering the scanning signal of xth row and pixel unit later is promoted to preset value, to extend data
Charging time of the voltage to pixel unit.In addition, GIP driving circuit is also by each height in the pixel unit after input xth row
The duty ratio of the pixel selection signal of pixel is promoted to preset value, to extend the charging time of each sub-pixel in pixel unit.
Increase the brightness of xth row to line n pixel unit.
Please refer to Fig. 2, in a specific embodiment of the invention, GIP driving circuit will input the scanning letter of xth row
The duration of number high level extends to t2 (i.e. t1 < t2) by t1.GIP driving circuit is by the pixel selection signal of the row simultaneously
The duration extension of high level.It specifically includes and the high level lasting time of red pixel selection signal is extended into t21 (i.e. t11
< t21), the high level lasting time of green pixel selection signal is extended into t22 (i.e. t12 < t22), by blue pixel selection signal
High level lasting time extend to t23 (i.e. t13 < t23).So far, equally within the display time of a frame, data voltage pair
The charging time of each sub-pixel is extended in xth row pixel unit, and the brightness of xth row pixel unit is promoted.
After xth row pixel unit charging complete, GIP driving circuit exports scanning signal, weight to (x+1)th row pixel unit
Multiple above step, GIP driving circuit promote the duty of the scanning signal and pixel selection signal that are output to (x+1)th row pixel unit
Than to extend the (x+1)th row pixel unit charging time.Until will export to line n pixel unit scanning signal and pixel selection
The duty ratio of signal is promoted.
When showing next frame picture, the GIP driving circuit is by the duty of the scanning signal and pixel selection signal
Than reverting to initial value again.The GIP driving circuit is scanned again since the first row pixel unit with initial duty cycle, directly
To xth row, it is scanned using the duty ratio after promotion.This process is similar to the above, does not repeat herein.
The invention shows the adjustment method of panel by measure each row pixel unit brightness and with standard pixel brightness contrast,
Determine the line number for being lower than standard pixel brightness for the first time, then GIP driving circuit promotes the row and later all row input pixel lists
The scanning signal of member and the duty ratio of pixel selection signal, increase the charging time of pixel unit, so that display panel
In each row pixel unit brightness uniformity, improve the display quality of display panel.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means particular features, structures, materials, or characteristics described in conjunction with this embodiment or example
It is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are different
Surely identical embodiment or example is referred to.Moreover, the particular features, structures, materials, or characteristics of description can be any one
It can be combined in any suitable manner in a or multiple embodiment or examples.
Embodiments described above does not constitute the restriction to the technical solution protection scope.It is any in above-mentioned implementation
Made modifications, equivalent substitutions and improvements etc., should be included in the protection model of the technical solution within the spirit and principle of mode
Within enclosing.
Claims (8)
1. a kind of adjustment method of display panel characterized by comprising
One display panel is provided, the display panel include driving chip, along a plurality of grid line of first direction arrangement, along vertical
The multiple data lines of first direction arrangement, along first direction arrangement n row pixel unit and in the driving chip
GIP driving circuit, the corresponding grid line of every row pixel unit, the grid line are connect with the GIP driving circuit, every a line
Each pixel unit include red pixel, green pixel and blue pixel, the GIP driving circuit is to the n row pixel unit with the 1st
Row to the mode that line n direction successively progressively scans exports scanning signal and pixel selection signal, wherein n > 1, the scanning letter
Number by the gateline transmission to the corresponding pixel unit, while the pixel selection signal includes red pixel selection letter
Number, green pixel selection signal and blue pixel selection signal, in the GIP driving circuit, one-row pixels unit provides scanning thereto
In the duration of signal, successively three pixel selection signals are exported respectively according to the same time period of three no overlaps
The red pixel, the green pixel and the blue pixel into pixel unit；
Within the display time of a frame, every row pixel unit brightness is successively measured by the 1st row to line n direction, and by every row picture
Plain unit brightness is compared with standard pixel brightness, wherein the 1st row to line n pixel unit is along far from GIP driving electricity
The arrangement of road direction；
Record pixel unit brightness is lower than the line number x of standard pixel brightness for the first time, and is sent to GIP driving circuit；
The GIP driving circuit will input xth row to the scanning signal of line n pixel unit and divide according to the line number x received
Do not correspond to three pixel selection signals of the red pixel, the green pixel and the blue pixel duty ratio be promoted to it is default
Value.
2. the adjustment method of display panel as described in claim 1, which is characterized in that described within the display time of a frame
GIP driving circuit successively exports scanning signal and pixel selection signal to each row pixel unit from the 1st row to line n direction.
3. the adjustment method of display panel as described in claim 1, which is characterized in that described after the display time of a frame
The duty ratio of the scanning signal and pixel selection signal is reverted to initial value by GIP driving circuit.
4. the adjustment method of display panel as claimed in claim 3, which is characterized in that the scanning signal and pixel selection letter
Number duty ratio initial value be preset value, the standard pixel brightness be preset value.
5. the adjustment method of display panel as described in claim 1, which is characterized in that detect every a line by color analysis instrument
Pixel unit brightness and with standard pixel brightness contrast.
6. the adjustment method of display panel as claimed in claim 5, which is characterized in that record pixel unit brightness is lower than for the first time
After the line number x of standard pixel brightness, stop the measurement of pixel unit brightness.
7. the adjustment method of display panel as described in claim 1, which is characterized in that when the scanning signal of input pixel unit
With pixel selection signal simultaneously be high level when, data voltage charges to the pixel unit.
8. the adjustment method of display panel as described in claim 1, which is characterized in that line number x is in such a way that data are written
It is transmitted in GIP driving circuit.
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| CN201610528273.2A CN105931591B (en) | 2016-07-06 | 2016-07-06 | A kind of adjustment method of display panel |
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| CN201610528273.2A CN105931591B (en) | 2016-07-06 | 2016-07-06 | A kind of adjustment method of display panel |
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| CN105931591B true CN105931591B (en) | 2019-06-25 |
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| CN107170418A (en) * | 2017-06-20 | 2017-09-15 | 惠科股份有限公司 | Drive And Its Driving Method and display device |
| CN108269547B (en) * | 2018-02-08 | 2020-07-14 | 京东方科技集团股份有限公司 | Pixel compensation method and compensation module, computer storage medium and display device |
| CN109285512B (en) * | 2018-10-25 | 2020-05-12 | 惠州市华星光电技术有限公司 | Driving method and device of display panel |
| CN109584839B (en) * | 2019-01-30 | 2021-07-06 | 惠科股份有限公司 | Driving method, device and equipment of display panel and storage medium |
| CN109599075B (en) | 2019-01-30 | 2020-12-15 | 惠科股份有限公司 | Driving method and driving device of display panel and display equipment |
| CN112365862B (en) * | 2020-11-09 | 2021-12-03 | 深圳市华星光电半导体显示技术有限公司 | Display panel brightness adjusting method and device |
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| JP4786996B2 (en) * | 2005-10-20 | 2011-10-05 | 株式会社 日立ディスプレイズ | Display device |
| KR20080028556A (en) * | 2006-09-27 | 2008-04-01 | 엘지.필립스 엘시디 주식회사 | Light emitting display |
| CN101191924B (en) * | 2006-11-24 | 2014-07-02 | 奇美电子股份有限公司 | Liquid crystal display panel data signal distortion compensating process and circuit |
| KR20090054324A (en) * | 2007-11-26 | 2009-05-29 | 엘지디스플레이 주식회사 | Driving method for organic light emitting display |
| JP2009139774A (en) * | 2007-12-10 | 2009-06-25 | Hitachi Displays Ltd | Display device |
| KR101469033B1 (en) * | 2008-01-08 | 2014-12-04 | 삼성디스플레이 주식회사 | Liquid crystal display and control method thereof |
| CN104392698A (en) * | 2014-12-17 | 2015-03-04 | 广州新视界光电科技有限公司 | LED display device and LED screen brightness uniformity regulating method |
| CN104599637A (en) * | 2015-02-11 | 2015-05-06 | 京东方科技集团股份有限公司 | Pixel circuit drive method and drive device |
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