CN105931591A - Method for debugging display panel - Google Patents
Method for debugging display panel Download PDFInfo
- Publication number
- CN105931591A CN105931591A CN201610528273.2A CN201610528273A CN105931591A CN 105931591 A CN105931591 A CN 105931591A CN 201610528273 A CN201610528273 A CN 201610528273A CN 105931591 A CN105931591 A CN 105931591A
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- pixel
- row
- brightness
- pixel cell
- drive circuit
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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
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- Engineering & Computer Science (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)
Abstract
The invention provides a method for debugging a display panel, which comprises the steps that a display panel is provided, wherein the display panel comprises n rows of pixel units and a GIP driving circuit, and the GIP driving circuit outputs scanning signals and pixel selection signals to the n rows of pixel units; the brightness of each row of pixel units is measured sequentially in the direction from the first row to the nth row, and the brightness of each row of pixel units is compared with the standard pixel brightness; the row number x in which the pixel unit brightness is first lower than the standard pixel brightness is recorded and transmitted to the GIP driving circuit; and the GIP driving circuit elevates the duty ratio of the scanning signals and the pixel selection signals inputted to the xth row to the nth row of pixel units to a preset value according to the received row number x. The GIP driving circuit adjusts the duty ratio of the scanning signals and the pixel selection signals inputted to the xth row and all rows after the xth row of pixel units, and the charging time of the pixel units is prolonged, thereby enabling each row of pixel units of the display panel to be uniform in brightness, and improving the display quality of the display panel.
Description
Technical field
The present invention relates to Display Technique field, particularly relate to the adjustment method of a kind of display floater.
Background technology
Organic EL display panel (OLED, Organic Light Emitting Diode) and liquid crystal display
Panel (LCD, Liquid Crystal Display) have that preparation technology is simple, low cost, luminous efficiency high and
It is easily formed the advantages such as flexible structure, has wide range of applications the most in existing display devices.
At present, the most generally to there is display brightness uneven for organic EL display panel and display panels
Problem.As a example by display panels, display panels mainly by array base palte, opposite substrate and
Liquid crystal layer composition between this two substrates；Wherein, array base palte is provided with grid line, data wire,
Thin film transistor (TFT) (TFT, Thin Film Transistor) and pixel electrode.Defeated to grid line at gate driver circuit
When entering the gate drive signal of high potential, the TFT being connected with grid line is in opening, source electrode drive circuit
The source drive signal loading data wire is applied on pixel electrode by TFT, fills pixel electrode
Electricity.During pixel electrode is charged, the resistance of data wire existence itself and data wire and electricity
Property connect pixel electrode between electric capacity, the source drive signal being loaded on pixel electrode can be caused relative
Exist in gate drive signal and postpone, and, the charging of the pixel electrode that distance source electrode drive circuit is the most remote is prolonged
Time is the longest late, and charging duration is the shortest, and display brightness is the darkest.Display panels is made to there is display brightness
Uneven problem, thus have a strong impact on the display quality of display panels.
Summary of the invention
It is an object of the invention to provide the adjustment method of a kind of display floater, can improve aobvious by the method
Show the problem that panel luminance is uneven, improve the display quality of display floater.
To achieve these goals, the following technical scheme of embodiment of the present invention offer:
The present invention provides the adjustment method of a kind of display floater, including:
A display floater, described display floater is provided to include n row pixel cell and GIP drive circuit, described
GIP drive circuit is to described n row pixel cell output scanning signal and pixel selection signal, wherein n ＞ 1；
Within the display time of a frame, walked to line n direction by the 1st and measure often row pixel cell brightness successively,
And often row pixel cell brightness is contrasted with standard pixel brightness, wherein, the 1st walks to line n pixel
Unit is arranged along away from described GIP drive circuit direction；
Record pixel cell brightness is first less than line number x of standard pixel brightness, and is sent to GIP driving electricity
Road；
Described GIP drive circuit is according to line number x received, by input xth row to line n pixel cell
The dutycycle of scanning signal and pixel selection signal is promoted to preset value.
Wherein, described pixel selection signal includes that red pixel selection signal, green pixel select signal and blue pixel
Select signal, the red pixel exported respectively to pixel cell, green pixel and blue pixel.
Wherein, by scanning signal and the duty of pixel selection signal of input xth row to line n pixel cell
Specifically include than during being promoted to preset value: described GIP drive circuit will input xth row to line n picture
The element red pixel selection signal of unit, green pixel select the dutycycle of signal and blue pixel selection signal to carry successively
Rise to preset value.
Wherein, within the display time of a frame, described GIP drive circuit is walked to line n direction by the 1st and depends on
Secondary to each row pixel cell output scanning signal and pixel selection signal.
Wherein, after the display time of a frame, described scanning signal and pixel are selected by described GIP drive circuit
The dutycycle selecting signal reverts to initial value.
Wherein, the dutycycle initial value of described scanning signal and pixel selection signal is preset value, described standard
Pixel intensity is preset value.
Wherein, by color analysis instrument detect every a line pixel cell brightness and with standard pixel brightness contrast.
Wherein, after record pixel cell brightness is first less than line number x of standard pixel brightness, pixel list is stopped
The measurement of unit's brightness.
Wherein, when the scanning signal and pixel selection signal inputting pixel cell is high level simultaneously, data
Described pixel cell is charged by voltage.
Wherein, during line number x is sent to GIP drive circuit by the way of data write.
The embodiment of the present invention has the advantage that or beneficial effect:
The adjustment method of display floater of the present invention by measure each row pixel cell brightness and with standard pixel brightness
Contrast, determines first less than the line number of standard pixel brightness, and then GIP drive circuit regulates this row and afterwards
All row input pixel cell scanning signal and the dutycycle of pixel selection signal, increase pixel cell
In the charging interval, so that the brightness uniformity of each row pixel cell in display floater, improve display floater
Display quality.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to enforcement
In example or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, describe below
In accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, do not paying
On the premise of going out creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the adjustment method schematic flow sheet of display floater of the present invention.
Fig. 2 is the time diagram of xth horizontal-drive signal.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, it is fully described by, it is clear that described embodiment is only a part of embodiment of the present invention, and not
It it is whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making wound
The all other embodiments obtained on the premise of the property made work, broadly fall into the scope of protection of the invention.
Additionally, the explanation of following embodiment is with reference to additional diagram, may be used to reality in order to illustrate the present invention
The specific embodiment executed.The direction term being previously mentioned in the present invention, such as, " on ", D score, "front", "rear",
"left", "right", " interior ", " outward ", " side " etc., be only the direction with reference to annexed drawings, therefore, use
Direction term in order to more preferably, be illustrated more clearly that and understand the present invention rather than instruction or infer indication
Device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that
Limitation of the present invention.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", should be interpreted broadly " being connected ", " connection ", for example, it may be fix connection, it is also possible to be detachable
Ground connects, or is integrally connected；Can be to be mechanically connected；Can be to be joined directly together, it is also possible in by
Between medium be indirectly connected to, can be the connection of two element internals.For those of ordinary skill in the art
Speech, can understand above-mentioned term concrete meaning in the present invention with concrete condition.
Additionally, in describing the invention, except as otherwise noted, " multiple " are meant that two or more.
If occurring the term of " operation " in this specification, it refers not only to independent operation, cannot be bright with other operation
When really distinguishing, as long as the effect desired by this operation that can realize then is also included within this term.It addition, this theory
In bright book with "～" number range that represents refer to using "～" before and after the numerical value recorded as minimum of a value and maximum
The scope that value is included.In the accompanying drawings, similar or identical being indicated by the same numeral of structure.
Referring to Fig. 1, the adjustment method of the display floater of the present invention specifically includes following steps:
S1: provide a display floater, described display floater to include n row pixel cell and GIP drive circuit,
Described GIP drive circuit is sequentially output scanning signal and pixel selection signal to described n row pixel cell, its
Middle n ＞ 1.
Concrete, that display floater includes driving chip (driver IC), arranges in the first direction a plurality of grid
Line, a plurality of data lines arranged along vertical first direction, n row pixel cell, often corresponding of row pixel cell
Gate line, (Gate in Pane is called for short GIP and drives for described gate line and the GIP drive circuit in driving chip
Circuit) connect.Described GIP drive circuit exports scanning signal in the way of progressive scan, and scanning signal passes through
Described gateline transmission is to the pixel cell of corresponding row.Preferably, within the display time of a frame, described GIP
Drive circuit is walked to line n direction successively to each row pixel cell output scanning signal and pixel selection by the 1st
Signal.When the scanning signal on gate line is high level, the pixel cell in gate line corresponding row is switched on,
In the data voltage transmission extremely described pixel cell that data wire provides.
Concrete, described pixel cell includes multiple sub-pixel, the reddest pixel, green pixel and blue pixel.
GIP drive circuit also inputs pixel selection signal to described pixel cell, and described pixel selection signal includes red picture
Element selects signal, green pixel to select signal and blue pixel selection signal, and red pixel selection signal is in order to gate picture
Red pixel in element unit, green pixel select signal in order to the green pixel gating in pixel cell, blue pixel choosing
Select signal in order to the blue pixel gating in pixel cell.The described data voltage being input in pixel cell is to choosing
Logical sub-pixel is charged.
Refer to Fig. 2, in a specific embodiment, when described GIP drive circuit scans xth row
Time.Within the display time of a frame, GIP drive circuit exports to the scanning letter on gate line corresponding to xth row
Number being t1 for duration of high level, data voltage flows in the pixel cell of xth row.Within the t11 time,
GIP drive circuit output pixel selects signal to be that (the reddest pixel selection signal is high electricity to red pixel selection signal
Flat), then the red pixel in this pixel cell is first charged by data voltage.After red pixel is charged,
Within the t12 time, GIP drive circuit output pixel selects signal to be changed into green pixel and selects signal (the greenest picture
Element selects signal to be high level), green pixel is charged by data voltage；Finally, within the t13 time, GIP
Drive circuit output pixel selects signal to be changed into blue pixel selection signal, and blue pixel is filled by data voltage
Electricity, completes the data voltage charging to this pixel cell.It is understood that under normal circumstances, t11=t12=
t13.During original state, the value of t11 and t1 of GIP drive circuit output is preset value.It is to say, institute
The dutycycle initial value stating scanning signal and pixel selection signal is preset value,
S2: within the display time of a frame, is walked to line n direction by the 1st and measures often row pixel cell successively
Brightness, and often row pixel cell brightness is contrasted with standard pixel brightness.
In display floater, described n row pixel cell is arranged successively along described first direction, and the 1st walks to n-th
Row pixel cell is arranged along away from described GIP drive circuit direction.It is to say, the 1st row pixel cell is relatively
Line n pixel cell is near described GIP drive circuit (driving chip).The closer to described GIP drive circuit
The brightness of pixel cell the highest.
Concrete, pixel cell brightness in every a line can be detected by color analysis instrument.Preferably, described
Color analysis instrument on a display panel by the first row to line n angle detecting.Namely along away from described GIP
The brightness of pixel cell in the every a line of drive circuit angle detecting.And by the brightness of every a line pixel cell and mark
Quasi-pixel intensity compares.Standard pixel brightness is also a preset value.Its brightness size is less than the first row
The brightness of pixel cell, such as, can be the 90% of the first row pixel cell brightness.
S3: record pixel cell brightness is first less than line number x of standard pixel brightness, and is sent to GIP driving
Circuit.
If detecting, the brightness of the pixel cell of xth row, less than standard pixel brightness, now records the row of this row
Number x.Now can continue to measure the brightness of the pixel cell of remaining row.Because along away from GIP
The descending luminance of the pixel cell in drive circuit direction.Therefore, the brightness of the pixel cell of remaining row is the least
In standard pixel brightness.It is understood that the most necessarily there is 1 ＜ x≤n.
S4: described GIP drive circuit, according to line number x received, will input xth row to line n pixel list
The scanning signal of unit and the dutycycle of pixel selection signal are promoted to preset value.
Color analysis instrument detects that this row, less than after standard pixel brightness, is led to by the brightness of xth row pixel cell
The mode crossing data write is sent in GIP drive circuit.After GIP drive circuit receives this line number information,
According to this line number information, by the dutycycle (Duty of the scanning signal of input xth row and pixel cell afterwards
Cycle) preset value is risen to, to extend the data voltage charging interval to pixel cell.Additionally, GIP drives
Dynamic circuit is also by the dutycycle of the pixel selection signal of each sub-pixel in the pixel cell after input xth row
It is promoted to preset value, to extend the charging interval of each sub-pixel in pixel cell.Increase xth row to n-th
The brightness of row pixel cell.
Incorporated by reference to refering to Fig. 2, in one specific embodiment of the present invention, GIP drive circuit will input xth row
Scanning signal high level duration extended to t2 (i.e. t1 ＜ t2) by t1.GIP drive circuit will simultaneously
The duration extension of the pixel selection signal high level of this row.Specifically include the height of red pixel selection signal
Level duration extends to t21 (i.e. t11 ＜ t21), and green pixel selects the high level lasting time of signal prolong
Long to t22 (i.e. t12 ＜ t22), the high level lasting time of blue pixel selection signal is extended to t23 (i.e.
T13 ＜ t23).So far, equally within the display time of a frame, data voltage in xth row pixel cell each
The charging interval of sub-pixel is extended, and the brightness of xth row pixel cell is promoted.
After xth row pixel cell charging complete, GIP drive circuit is swept to the output of (x+1)th row pixel cell
Retouching signal, repeat above step, GIP drive circuit promotes the output scanning letter to (x+1)th row pixel cell
Number and the dutycycle of pixel selection signal, to extend the (x+1)th row pixel cell charging interval.Until will output
Dutycycle to line n pixel cell scanning signal and pixel selection signal promotes.
When showing next frame picture, described GIP drive circuit is by described scanning signal and pixel selection signal
Dutycycle revert to again initial value.Described GIP drive circuit starts from the first row pixel cell with initially again
Dutycycle is scanned, until after xth row, using the dutycycle after promoting to be scanned.This process is with upper
State similar, do not repeat.
The adjustment method of display floater of the present invention by measure each row pixel cell brightness and with standard pixel brightness
Contrast, determines first less than the line number of standard pixel brightness, and then GIP drive circuit promotes this row and afterwards
All row input pixel cell scanning signal and the dutycycle of pixel selection signal, increase pixel cell
In the charging interval, so that the brightness uniformity of each row pixel cell in display floater, improve display floater
Display quality.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " tool
Body example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure,
Material or feature are contained at least one embodiment or the example of the present invention.In this manual, to upper
The schematic representation stating term is not necessarily referring to identical embodiment or example.And, the concrete spy of description
Levy, structure, material or feature can in any one or more embodiments or example in an appropriate manner
In conjunction with.
Embodiments described above, is not intended that the restriction to this technical scheme protection domain.Any upper
Amendment, equivalent and the improvement etc. made within stating the spirit of embodiment and principle, should be included in this
Within the protection domain of technical scheme.
Claims (10)
1. the adjustment method of a display floater, it is characterised in that including:
A display floater, described display floater is provided to include n row pixel cell and GIP drive circuit, described
GIP drive circuit is to described n row pixel cell output scanning signal and pixel selection signal, wherein n ＞ 1；
Within the display time of a frame, walked to line n direction by the 1st and measure often row pixel cell brightness successively,
And often row pixel cell brightness is contrasted with standard pixel brightness, wherein, the 1st walks to line n pixel
Unit is arranged along away from described GIP drive circuit direction；
Record pixel cell brightness is first less than line number x of standard pixel brightness, and is sent to GIP driving electricity
Road；
Described GIP drive circuit is according to line number x received, by input xth row to line n pixel cell
The dutycycle of scanning signal and pixel selection signal is promoted to preset value.
2. the adjustment method of display floater as claimed in claim 1, it is characterised in that described pixel selection is believed
Number include that red pixel selection signal, green pixel select signal and blue pixel selection signal, export respectively to pixel
Red pixel, green pixel and blue pixel in unit.
3. the adjustment method of display floater as claimed in claim 2, it is characterised in that input xth row is arrived
The scanning signal of line n pixel cell and the dutycycle of pixel selection signal are concrete during being promoted to preset value
Including: described GIP drive circuit by the red pixel selection signal of input xth row to line n pixel cell,
Green pixel selects the dutycycle of signal and blue pixel selection signal to be promoted to preset value successively.
4. the adjustment method of display floater as claimed in claim 1, it is characterised in that when the display of a frame
In, described GIP drive circuit is walked to line n direction successively to the output scanning of each row pixel cell by the 1st
Signal and pixel selection signal.
5. the adjustment method of display floater as claimed in claim 1, it is characterised in that when the display of a frame
After between, the dutycycle of described scanning signal and pixel selection signal is reverted to initially by described GIP drive circuit
Value.
6. the adjustment method of display floater as claimed in claim 5, it is characterised in that described scanning signal and
The dutycycle initial value of pixel selection signal is preset value, and described standard pixel brightness is preset value.
7. the adjustment method of display floater as claimed in claim 1, it is characterised in that pass through color analysis instrument
Detect every a line pixel cell brightness and with standard pixel brightness contrast.
8. the adjustment method of display floater as claimed in claim 7, it is characterised in that record pixel cell is bright
After degree is first less than line number x of standard pixel brightness, stop the measurement of pixel cell brightness.
9. the adjustment method of display floater as claimed in claim 1, it is characterised in that when input pixel cell
Scanning signal and pixel selection signal when being simultaneously high level, described pixel cell is filled by data voltage
Electricity.
10. the adjustment method of display floater as claimed in claim 1, it is characterised in that line number x is by number
It is sent in GIP drive circuit according to the mode of write.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610528273.2A CN105931591B (en) | 2016-07-06 | 2016-07-06 | A kind of adjustment method of display panel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610528273.2A CN105931591B (en) | 2016-07-06 | 2016-07-06 | A kind of adjustment method of display panel |
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| CN105931591B CN105931591B (en) | 2019-06-25 |
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Cited By (8)
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| CN108269547A (en) * | 2018-02-08 | 2018-07-10 | 京东方科技集团股份有限公司 | Pixel compensation method and compensating module, computer storage media, display device |
| WO2018232923A1 (en) * | 2017-06-20 | 2018-12-27 | 惠科股份有限公司 | Drive device, drive method thereof, and display device |
| WO2020082482A1 (en) * | 2018-10-25 | 2020-04-30 | 惠州市华星光电技术有限公司 | Method and device for driving a display panel |
| WO2020155259A1 (en) * | 2019-01-30 | 2020-08-06 | 惠科股份有限公司 | Display panel driving method, display apparatus and display device |
| WO2020155263A1 (en) * | 2019-01-30 | 2020-08-06 | 惠科股份有限公司 | Display panel drive method and device |
| CN112365862A (en) * | 2020-11-09 | 2021-02-12 | 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 |
| CN114765003A (en) * | 2021-01-12 | 2022-07-19 | 京东方科技集团股份有限公司 | Display panel driving method, display panel and display device |
| CN117935734A (en) * | 2024-02-29 | 2024-04-26 | 惠科股份有限公司 | Brightness compensation method for display panel and display panel |
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| CN114765003A (en) * | 2021-01-12 | 2022-07-19 | 京东方科技集团股份有限公司 | Display panel driving method, display panel and display device |
| CN117935734A (en) * | 2024-02-29 | 2024-04-26 | 惠科股份有限公司 | Brightness compensation method for display panel and display panel |
| CN117935734B (en) * | 2024-02-29 | 2024-10-08 | 惠科股份有限公司 | Brightness compensation method for display panel and display panel |
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| CN105931591B (en) | 2019-06-25 |
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