CN108806576A - Display device, panel control device and application method - Google Patents
Display device, panel control device and application method Download PDFInfo
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- CN108806576A CN108806576A CN201810536314.1A CN201810536314A CN108806576A CN 108806576 A CN108806576 A CN 108806576A CN 201810536314 A CN201810536314 A CN 201810536314A CN 108806576 A CN108806576 A CN 108806576A
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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
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Abstract
The invention discloses a kind of display device, panel control device and application methods；The display device includes display panel and peripheral circuit, which includes main control unit, camera and signal generator；Signal generator is electrically connected with display device when in use, and camera is used to acquire the image data of display panel and is transmitted to main control unit；Main control unit transmits grayscale signal for control signal generator to display device, display panel is set to show preset gray scale picture, it is additionally operable to compensate calculating according to image data and corresponding backoff algorithm, control signal generator is by the peripheral circuit of offset data input and display device；The invention also discloses the application methods of display device and the panel control device that the pre- burning of data is compensated using the device.
Description
Technical field
The present invention relates to a kind of display technology field more particularly to display device, panel control device and application methods.
Background technology
To realize that narrow frame even " Rimless " is shown, frequently with embedding technique in grid in existing display technology, in grid
Embedding technique uses original making technology of display panel, will connect gate driving circuit (the Gate Driver of scan line
Monolithic, GDM) it is produced on the substrate around viewing area, make it to substitute the drive that external circuits chip completes scan line
It is dynamic, binding (bonding) process of external circuits chip is reduced, and reduce product power consumption.
When gate driving circuit is distributed on the outside of visible area (areas AA) on the display panel on both sides, it is aobvious that narrow frame may be implemented
Show；As shown in Figure 1, when gate driving circuit is distributed in inside visible area on the display panel on both sides, may be implemented " Rimless "
Display.But pixel interior cabling increases the aperture opening ratio that can reduce panel, and the setting area of gate driving circuit and non-setting area exist
There are luminance differences under the backlight of brightness uniformity.In order to mitigate the luminance difference in two kinds of regions, panel can be by way of wiring
One section of adjustment region is set so that the variation of aperture opening ratio slows down, and visually realizes that same grayscale transition is uniform, the panel after improvement
Aperture opening ratio variation tendency is as shown in Fig. 2.Main ameliorative way includes following two：
Method one：Selectively increase signal wire wiring in pixel in non-setting area with setting area to open to reduce
Mouth rate, reduces the luminance difference of setting area and non-setting area；
Method two：Increase black matrix" (BM) area of pixel in non-setting area to reduce aperture opening ratio.
However, method one needs to accurately calculate the length and width of signal wire, keep setting area and non-setting area luminance transition equal
Even no mutation needs to accomplish panel parasitic capacitance can be caused to increase, and reduce panel without electric connection with original circuit
Aperture opening ratio.
Method two need to accurately calculate the width of black matrix" with method one, so that setting area and non-setting area brightness
Transition reduces the aperture opening ratio of panel in addition without mutation.
In addition to above two is by adjusting the ameliorative way of panel wiring, panel aperture opening ratio can also be kept constant, increased
Backlight illumination in setting area, to reduce the luminance difference of setting area and non-setting area.But due to realizing backlight area
The difficulty for changing adjusting is larger, and at present there is no such backlight and backlight drive devices.
Invention content
In order to solve the above technical problems, a kind of display device of present invention offer, panel control device and application method,
Under the premise of not changing dot structure, by the pre- burning of offset data, achieve the effect that improve display unevenness.
Technical solution provided by the invention is as follows：
The invention discloses a kind of panel control devices, and the display for improving display device is uneven, the display device
Including display panel and peripheral circuit, which includes main control unit, camera and signal generator；The master control
Module includes image capture module and signal source control module；The main control unit is electrically connected with signal generator, the letter
Number generator is electrically connected with display device when in use；
Main control unit controls control signal generator and transmits grayscale signal to display device, and the signal generator is to display
Device transmits grayscale signal, and display panel is made to show preset gray scale picture；
Image data is simultaneously conveyed into main control unit by the image data of camera acquisition display panel；
Main control unit compensates calculating according to image data and corresponding backoff algorithm, and control signal generator will mend
Repay the peripheral circuit of data entry display device.
The invention also discloses a kind of display device, the above-mentioned panel control device of the display device applications compensates data
Pre- burning；
The peripheral circuit includes printed circuit board, and the printed circuit board is equipped with time series data controller and storage
Device；
The memory is for receiving the offset data；
The time series data controller reads the offset data in the memory after powering, and adjustment is input to display surface
The data voltage of plate.
The invention also discloses a kind of application methods of panel control device, are applied to above-mentioned panel control device, should
Application method includes the following steps：
The first step：Display device lighting and take pictures, judge the display device whether non-defective unit；If non-defective unit is then tied
Beam；If defective products, then second step is carried out；
Second step：The signal source control module control signal generator of main control unit transmits grayscale signal to display device,
Display panel shows preset gray scale picture；Camera takes pictures to display panel, and image data is conveyed into the figure of main control unit
As acquisition module；
Third walks：Main control unit handles image data to obtain the brightness value for corresponding to each base unit, and will figure
It is compensated brightness value as data substitute into predesigned compensation algorithm, by compensation input generator；
4th step：Signal generator receives compensation and generates offset data, is burnt offset data by burning interface
Record the peripheral circuit into display device；
5th step：To sentencing again after display device again lighting；If the display device is non-defective unit, terminate；If being still bad
Product then return to second step or carry out other and correct or scrap.
Preferably, the image data in the second step is that basic unit is acquired with single pixel.
Preferably, the image data in the second step is that basic unit is acquired with i*j pixel, and wherein i, j are
Positive integer more than 1.
Preferably, it includes at distortion processing and analysis that the main control unit in the third step carries out processing to image data
Reason；
The distortion processing includes carrying out brightness judgement to the image data of each base unit of correspondence, obtains brightness value；
The analyzing processing includes selecting suitable preset algorithm according to the brightness value changing rule of each base unit.
Preferably, the compensation of corresponding kth row base unit meets：
Wherein n is the line number of basic unit, and m is that the columns of basic unit, 1≤k≤m, and n, m, k are positive integer, △ L
For the compensation of kth row base unit,For the average brightness value of basic unit,
average(a1k a2k…ank) be kth row base unit average brightness value.
Preferably, the compensation of corresponding kth row base unit meets：
Wherein n is the line number of basic unit, and m is that the columns of basic unit, 1≤k≤m, and n, m, k are positive integer, △ L
For the compensation of kth row base unit,For the average brightness value of basic unit, mode
(a1k a2k…ank) be kth row base unit brightness value mode.
Preferably, the compensation of corresponding kth row base unit meets：
Wherein n is the line number of basic unit, and m is that the columns of basic unit, 1≤k≤m, and n, m, k are positive integer, △ L
For the compensation of kth row base unit,For the brightness value mode of basic unit,
average(a1k a2k … ank) be kth row base unit average brightness value.
Preferably, the compensation of corresponding kth row base unit meets：
Wherein n is the line number of basic unit, and m is that the columns of basic unit, 1≤k≤m, and n, m, k are positive integer, △ L
For the compensation of kth row base unit,For the brightness value mode of basic unit, mode
(a1k a2k ... ank) is the brightness value mode of kth row base unit.
Compared with prior art, the present invention can bring at least one of following advantageous effect：
1, it is adjusted compared to the pixel aperture ratio in array substrate, method of the invention compensation is more accurate, and does not change
Become existing dot structure；
2, compensation visible area is due to leading portion panel system while can showing unevenness caused by wiring in compensation pixel
Diversified display is uneven caused by journey；
3, various machines are generally applicable to, need not be directed to specific machine do aperture opening ratio transition processing calculating, design and
It draws, cost-effective and wide usage is strong；
4, the characteristic of panel is embedded according to grid, is proposed many algorithms, is substantially reduced data processing amount and stored memory.
Description of the drawings
Below by a manner of clearly understandable, preferred embodiment is described with reference to the drawings, the present invention is given furtherly
It is bright.
Fig. 1 is arrangement architecture schematic diagram of the gate driving circuit in visible area；
Fig. 2 is to adjust the panel aperture opening ratio variation tendency after wiring in the prior art；
Fig. 3 is the structural schematic diagram of panel control device of the present invention；
Fig. 4 is display panel with the schematic diagram that single pixel is that basic unit is detected；
Fig. 5 is display panel with the schematic diagram that 2*2 pixel is that basic unit is detected；
Fig. 6 is pixel gray level brightness collection result schematic diagram under dividing mode shown in Fig. 4.
Fig. 7 is the techniqueflow chart of the application method of panel control device of the present invention；
Specific implementation mode
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, control is illustrated below
The specific implementation mode of the present invention.It should be evident that drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing, and obtain other embodiments.
To make simplified form, part related to the present invention is only schematically shown in each figure, they are not represented
Its practical structures as product.In addition, so that simplified form is easy to understand, there is identical structure or function in some figures
Component only symbolically depicts one of those, or has only marked one of those.
The display device of the present invention compensates the pre- burning of data using a panel control device, and display device includes aobvious
Show panel 04 and peripheral circuit, peripheral circuit includes printed circuit board 05 (Printed circuit board, FCB), electrically
The flexible PCB (Flexible printed circuit Board, FPC) of display panel 04 and printed circuit board 05 is connected,
Printed circuit board 05 is equipped with time series data controller (Tcon) and memory (Flash).
The panel control device is as shown in figure 3, include main control unit 01, camera 02 and signal generator 03.Main control unit
01 is electrically connected with signal generator 03, and signal generator 03 electrically connects with the printed circuit board of display device 05 when in use
It connects.
In use, camera 02 is located at display panel 04 in darkroom, main control unit 01 is located at outside darkroom.Camera 02 is aobvious
Showing device lighting is taken pictures in the case of showing preset gray scale picture, and the image data of acquisition is conveyed into main control unit 01
Image capture module 011.Can be as shown in Figure 4 that basic unit is detected with single pixel in image data acquiring,
It can be as shown in Figure 5 that basic unit is detected with 2*2 pixel, i.e., be that basic unit is detected with i*j pixel,
Middle i, j are the positive integer more than 1.
Main control unit 01 includes image capture module 011 and signal source control module 012.Image capture module 011 receives
Image data.012 one side of signal source control module control signal generator 03 in display device lighting is passed to display device
Defeated grayscale signal makes display panel 04 show preset gray scale picture；On the other hand according to image data and corresponding backoff algorithm
Compensate calculating, and control signal generator 05 is by the peripheral circuit of offset data input and display device.
Signal generator 03 is electrically connected in the pre- burning for compensating data with printed circuit board 05.Signal occurs
03 one side of device passes through HSSI High-Speed Serial Interface V-BY- ONE, Low Voltage Differential Signal under the control of signal source control module 012
Grayscale signal is conveyed into printed circuit board 05 by the interfaces such as technical interface LVDS, embedded display port EDP, makes display panel 04
Show preset grey menu.For display panel 04 due to grid is embedded etc., grey menu has non-uniform phenomenon.Signal is sent out
Raw 03 another aspect of device will be mended by burnings interfaces such as serial peripheral equipment interface SPI, Universal Serial Interface USB, debugging interface JTAG
The pre- burning of data is repaid into the memory of printed circuit board 05.
After display device is switched on, the time series data controller of printed circuit board 05 can read the benefit stored in memory
Data are repaid, adjustment is input to the data voltage size of display panel 04, to realize the local modulation to panel luminance, reduces grid
The luminance difference of driving circuit setting area and non-setting area.
By taking single pixel is basic unit gathered data as an example (8 row, 10 row base unit is only shown to be simple, in Fig. 6, it is real
It is n rows m row in the application of border, n, m are positive integer)：
The visible area pixel of display panel 04 is divided into the base unit of n rows m row, line n m row base units by matrix
Brightness value be labeled as anm.It should be noted that so-called brightness value below the present invention, compensation, average brightness value, bright
Angle value mode etc. is actually not with cd/m2, intrinsic brilliance value that nit etc. is unit, but the label for carrying out staged quantization is bright
Angle value or the voltage value for referring to correspondence markings brightness value.
The results are shown in Figure 6 for brightness acquisition, and the file region transmitance on the embedded panel both sides of grid is low, brightness is low；
Intermediate file region transmitance is high, brightness is high.Due in the longitudinal direction, GDM circuits, transmitance and the brightness three of each row pixel
Person has correlation, this characteristic, optimization algorithm can be utilized when data processing to reduce data processing amount and storage capacitance, such as take
The compensation of each row pixel is identical value, is with full HD (Full High Definition, FHD) display device
Example, shared stored memory can be reduced to 0.5M to offset data by 530M in memory.
By taking kth (1≤k≤m and k is integer) row pixel as an example, note △ L are the unified compensation of the row,For the average brightness value of visible area base unit, average (a1k a2k ... ank) is the
The average brightness value of k row base units,For the brightness value mode of visible area base unit,
Mode (a1k a2k ... ank) is the brightness value mode of kth row base unit.
It includes following four that the present invention, which improves the uneven backoff algorithm of display,：
Backoff algorithm one：
Using the average brightness value of visible area base unit as standard, it is sampling to take the average brightness value of the row base unit
Value,
The compensation △ L for corresponding to kth row base unit at this time meet：
Backoff algorithm two:
Using the average brightness value of visible area base unit as standard, it is sampling to take the brightness value mode of the row base unit
Value,
The compensation △ L for corresponding to kth row base unit at this time meet：
Backoff algorithm three：
Using the brightness value mode of visible area base unit as standard, it is sampling to take the average brightness value of the row base unit
Value,
The compensation △ L for corresponding to kth row base unit at this time meet：
Backoff algorithm four：
Using the brightness value mode of visible area base unit as standard, it is sampling to take the brightness value mode of the row base unit
Value,
The compensation △ L for corresponding to kth row base unit at this time meet：
It should be noted that algorithm selected in the application method of panel control device of the present invention include but not limited to
Upper four kinds, suitable algorithm can be selected according to the bad type and gray scale variation rule of product.
The techniqueflow chart of the application method of panel control device of the present invention is as shown in fig. 7, this approach includes the following steps：
The first step：Display device lighting and take pictures, judge the display device whether non-defective unit；If non-defective unit is then tied
Beam；If defective products, then second step is carried out；
Second step：The signal source control module 012 of main control unit 01 controls control signal generator 03 and is passed to display device
Defeated grayscale signal, display panel 04 show preset gray scale picture；Camera 01 carries out shape of taking pictures to the grey menu of display panel 04
At image data, and image data is conveyed into the image capture module 011 of main control unit 01；
Third walks：Main control unit 01 handles image data to obtain the brightness value for corresponding to each base unit, and will
Image data substitutes into predesigned compensation algorithm and is compensated brightness value, by compensation input generator 03；
4th step：Signal generator 03 receives compensation and generates offset data, by burning interface by offset data
Pre- burning is into the memory of printed circuit board 05；
5th step：To sentencing again after display device again lighting；If the display device is non-defective unit, terminate；If being still bad
Product then return to second step or carry out other and correct or scrap.
Specifically, the image data in above-mentioned second step can be that basic unit is acquired with single pixel, can also i*j
A pixel unit is that basic unit is acquired, and wherein i, j are the positive integer more than 1.
It includes distortion processing and analyzing processing that main control unit 01 in above-mentioned third step carries out processing to image data；Distortion
Processing includes carrying out brightness judgement, the brightness value quantified to the image data of each base unit of correspondence；Analyzing processing packet
It includes and suitable preset algorithm is selected according to the gray scale variation rule of each base unit.
Improve the uneven method of display in the present invention to be adjusted more precisely compared to the pixel aperture ratio in array substrate,
And vary without existing dot structure；Not only it can also compensate visible area to show unevenness caused by wiring in compensation pixel
Domain is uneven due to diversified display caused by leading portion panel processing procedure；Various machines are generally applicable to, specific machine need not be directed to
Kind does the calculating, design and drafting of aperture opening ratio transition processing, can be cost-effective；The present invention embeds the spy of panel according to grid
Property, it proposes many algorithms, substantially reduces data processing amount and stored memory.
After the completion of offset data pre- burning, display device is once switched on the display device of the present invention, printed circuit board 05
Time series data controller can read the data stored in memory, adjustment is input to the data voltage size of display panel 04,
To realize the local modulation to panel luminance.
It should be noted that above-described embodiment can be freely combined as needed.The above is only the preferred of the present invention
Embodiment, it is noted that for those skilled in the art, in the premise for not departing from the principle of the invention
Under, multiple improvements and modifications can also be made, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of panel control device, the display for improving display device is uneven, the display device include display panel with
Peripheral circuit, it is characterised in that：Panel control device includes main control unit, camera and signal generator；The main control module
Including image capture module and signal source control module；The main control unit is electrically connected with signal generator, the signal hair
Raw device is electrically connected with display device when in use；
Main control unit controls control signal generator and transmits grayscale signal to display device, and the signal generator is to display device
Grayscale signal is transmitted, display panel is made to show preset gray scale picture；
Image data is simultaneously conveyed into main control unit by the image data of camera acquisition display panel；
Main control unit compensates calculating according to image data and corresponding backoff algorithm, and control signal generator will compensate number
According to the peripheral circuit of input and display device.
2. a kind of display device, it is characterised in that：The display device applications panel control device as described in claim 1 into
The pre- burning of row offset data；
The peripheral circuit includes printed circuit board, and the printed circuit board is equipped with time series data controller and memory；
The memory is for receiving the offset data；
The time series data controller reads the offset data in the memory after powering, and adjustment is input to display panel
Data voltage.
3. a kind of application method of panel control device, is applied to panel control device as described in claim 1, feature exists
In including the following steps：
The first step：Display device lighting and take pictures, judge the display device whether non-defective unit；If non-defective unit then terminates；If
It is defective products, then carries out second step；
Second step：The signal source control module control signal generator of main control unit transmits grayscale signal, display to display device
Display panel preset gray scale picture；Camera takes pictures to display panel, and the image that image data is conveyed into main control unit is adopted
Collect module；
Third walks：Main control unit is handled to obtain the brightness value for corresponding to each base unit to image data, and by picture number
It is compensated brightness value according to predesigned compensation algorithm is substituted into, by compensation input generator；
4th step：Signal generator receive compensation generate offset data, by burning interface by offset data burning into
The peripheral circuit of display device；
5th step：To sentencing again after display device again lighting；If the display device is non-defective unit, terminate；If being still defective products,
It returns to second step or carries out other and correct or scrap.
4. according to claim 3 improve the uneven method of display, it is characterised in that：
Image data in the second step is acquired with single pixel for basic unit.
5. according to claim 3 improve the uneven method of display, it is characterised in that：
Image data in the second step is acquired with i*j pixel for basic unit, and wherein i, j are just whole more than 1
Number.
6. according to claim 4 or 5 improve the uneven method of display, it is characterised in that：
It includes distortion processing and analyzing processing that main control unit in the third step carries out processing to image data；
The distortion processing includes carrying out brightness judgement to the image data of each base unit of correspondence, obtains brightness value；
The analyzing processing includes selecting suitable preset algorithm according to the brightness value changing rule of each base unit.
7. according to claim 4 or 5 improve the uneven method of display, which is characterized in that corresponding kth row base unit
The compensation meets：
Wherein n is the line number of basic unit, and m is that the columns of basic unit, 1≤k≤m, and n, m, k are positive integer, and △ L are kth
The compensation of row base unit,For the average brightness value of basic unit, average
(a1k a2k…ank) be kth row base unit average brightness value.
8. according to claim 4 or 5 improve the uneven method of display, which is characterized in that corresponding kth row base unit
The compensation meets：
Wherein n is the line number of basic unit, and m is that the columns of basic unit, 1≤k≤m, and n, m, k are positive integer, and △ L are kth
The compensation of row base unit,For the average brightness value of basic unit, mode (a1k
a2k …ank) be kth row base unit brightness value mode.
9. according to claim 4 or 5 improve the uneven method of display, which is characterized in that corresponding kth row base unit
The compensation meets：
Wherein n is the line number of basic unit, and m is that the columns of basic unit, 1≤k≤m, and n, m, k are positive integer, and △ L are kth
The compensation of row base unit,For the brightness value mode of basic unit, average
(a1k a2k…ank) be kth row base unit average brightness value.
10. according to claim 4 or 5 improve the uneven method of display, which is characterized in that corresponding kth row base unit
The compensation meet：
Wherein n is the line number of basic unit, and m is that the columns of basic unit, 1≤k≤m, and n, m, k are positive integer, and △ L are kth
The compensation of row base unit,For the brightness value mode of basic unit, mode (a1k
a2k…ank) be kth row base unit brightness value mode.
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| CN112908252A (en) * | 2021-01-26 | 2021-06-04 | 合肥维信诺科技有限公司 | Display device and compensation method of display panel |
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| CN112908252A (en) * | 2021-01-26 | 2021-06-04 | 合肥维信诺科技有限公司 | Display device and compensation method of display panel |
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