CN109658890A - A kind of the compensation data method and display device of display device - Google Patents
A kind of the compensation data method and display device of display device Download PDFInfo
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- CN109658890A CN109658890A CN201910066004.2A CN201910066004A CN109658890A CN 109658890 A CN109658890 A CN 109658890A CN 201910066004 A CN201910066004 A CN 201910066004A CN 109658890 A CN109658890 A CN 109658890A
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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
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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
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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
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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
- 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
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
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- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses the compensation data methods and display device of a kind of display device, it is related to technical field of liquid crystal display, the compensation data method carries out first time flicker value detection first, the corresponding common voltage of flicker value in each region of display panel and benchmark common voltage are subjected to uplink comparison, multiple gamma electric voltages are adjusted to the first compensation gamma electric voltage according to the flicker value in each region according to the result of uplink comparison, then the compensation data information of each region is written by display device according to the result of downlink comparison after the detecting of secondary flicker value；And the data voltage of each region is finely adjusted using the data voltage selector channel of data driver DAC mode, compensation data information is stored into display panel, it is uneven to solve display caused by flicker of display panel.
Description
Technical field
The present invention relates to technical field of liquid crystal display more particularly to the compensation data methods and display dress of a kind of display device
It sets.
Background technique
Due to the public electrode that whole face is laid with, the common voltage (Vcom) of conventional display panels is unified value, so can only
It adjusts to a unified Vcom.Panel TFT parameter, liquid crystal parameter, PI technique difference, lead to different zones on display panel
It is different to flash (Flicker) value, so that different flashings is presented in different zones, basic reason is the best of different zones
Vcom is different.
The liquid crystal voltage V of display panelLC=Vdate-Vcom, wherein Vdate is the data voltage of pixel unit.Data electricity
Vdate is pressed to be exported by data driver (Source IC).Such as 6 bit (6bit) display panel need to cooperate 6bit or more
Source IC.Display precision is higher, bit needed for Source IC higher.Therefore, directly data voltage is mended
It repays, so that there is display panel different zones unified Fli cker value to need very big operand, can seriously occupy Source
The operand and memory space of IC.
Summary of the invention
To solve the above-mentioned problems, the present invention provides the compensation data method and display device of a kind of display device, solutions
Certainly display caused by flicker of display panel is uneven.
Technical solution provided by the invention is as follows:
According to the first aspect of the invention, the present invention provides a kind of compensation data method of display device, display devices
Including display panel；The compensation data method of the display device the following steps are included:
Display panel is lit up as flashing detecting picture, display panel is divided into N (N is positive integer) a region by the first step,
Detect the flicker value in each region；
Second step obtains first common voltage of corresponding each region as best common voltage according to flicker value；
First common voltage of corresponding each region and benchmark common voltage are carried out uplink comparison, according to upper by third step
Result output the first compensation gamma electric voltage of row comparison；
4th step exports the first offset data voltage to display panel, display panel root according to the first compensation gamma electric voltage
It is lighted according to the first offset data voltage；
5th step detects the flicker value in each region of display panel again；
6th step judges whether there is the region that flicker value is more than preset value；If so, choosing flicker value is more than preset value
The best common voltage in those regions of selection is replaced with corresponding second public affairs by the first common voltage according to flicker value by region
Common voltage；
The best common voltage of corresponding each region and benchmark common voltage are carried out downlink comparison, under by the 7th step
Display device is written in the compensation data information of each region by the result of row comparison.
Preferably, it is further comprised the steps of: before the first step
Flashing adjustment is carried out to the middle section of display panel, common voltage corresponding to the flicker value by middle section is made
For benchmark common voltage.
Preferably, according to common voltage-flicker value relation curve data, same flicker value is corresponding, and there are two different public
Voltage；
First common voltage is biggish one in corresponding two common voltages of flicker value in the region, with this
Corresponding second common voltage of one common voltage is lesser one in corresponding two common voltages of flicker value in the region；
Alternatively, first common voltage is lesser one in corresponding two common voltages of flicker value in the region,
The second common voltage corresponding with first common voltage is biggish in corresponding two common voltages of flicker value in the region
One.
According to the second aspect of the invention, the invention discloses a kind of display devices, using above-mentioned any one technical side
The compensation data method of the display device of case, the display device include: display panel, compensation data device, data driver with
And sequence controller；
The compensation data device is used to detect the flicker value in N number of region in display panel, and according to flicker value acquisition pair
Answer first common voltage of each region as best common voltage；
The best common voltage and benchmark of correspondence each region that sequence controller is used to export in compensation data device are public
Common voltage carries out uplink comparison, according to the first compensation gamma electric voltage of result output of uplink comparison to data driver；
The data driver is used to export the first offset data voltage to display panel according to the first compensation gamma electric voltage；
The display panel is lighted according to the first offset data voltage；
The compensation data device is also used to choose the region that flicker value is more than preset value, according to flicker value being somebody's turn to do selection
The best common voltage in a little regions replaces with corresponding second common voltage by the first common voltage；
The best common voltage of correspondence each region that the sequence controller is also used to export in compensation data device with
Benchmark common voltage carries out downlink comparison, and the compensation data information of each region is stored according to the result that downlink compares.
Preferably, the compensation data device specifically includes:
Scintillation detector, for carrying out flashing detecting, and the flicker value input offset meter that detecting is obtained to display panel
Calculate device；
Compensation calculation device, compensation calculation device is preset with common voltage-flicker value relation curve data, according to common voltage-
Flicker value relation curve data acquisition corresponds to the first common voltage or the second common voltage of flicker value；
Replacement unit, for choosing the region that flicker value is more than preset value, according to flicker value by those regions of selection
Best common voltage replaces with corresponding second common voltage by the first common voltage.
Preferably, according to common voltage-flicker value relation curve data, same flicker value is corresponding, and there are two different public
Voltage；
First common voltage is biggish one in corresponding two common voltages of flicker value in the region, with this
Corresponding second common voltage of one common voltage is lesser one in corresponding two common voltages of flicker value in the region；
Alternatively, first common voltage is lesser one in corresponding two common voltages of flicker value in the region,
The second common voltage corresponding with first common voltage is biggish in corresponding two common voltages of flicker value in the region
One.
Preferably, the display panel can show 2n grayscale, and the exportable 2m kind numerical value of data driver is different
Optional voltage, wherein n, m are integer, and m >=n；
Each grayscale corresponds to 2m-n optional voltages, and the corresponding optional voltage of each grayscale does not repeat；
When a certain region of display panel needs to show a certain grayscale, according to the compensation data information in the region from the ash
Data voltage output is chosen one as in the corresponding optional voltage of rank.
Preferably, the display panel can show 2n grayscale, and the exportable 2m numerical value of data driver is different
Optional voltage, wherein n, m are integer, and m >=n；
Each grayscale corresponds to 2m-n+k optional data voltages, and wherein k is integer, and 1≤k < n；
When a certain region of display panel needs to show a certain grayscale, according to the compensation data information in the region from the ash
Data voltage output is chosen one as in the corresponding optional voltage of rank.
Compared with prior art, the present invention can bring it is at least one of following the utility model has the advantages that
1, it is detected by flicker value twice and the compensation data information for corresponding to each region flicker value, solution is chosen in comparison twice
Certainly display caused by flicker of display panel is uneven；
2, gamma electric voltage is compensated according to the result of uplink comparison and downlink comparison, while data voltage is selected logical
Road is finely adjusted, and improves the accuracy of compensation data；
3, after compensation data, by the fixed write-in display device of the compensation data information of corresponding each region, data are reduced
The operand of driving chip.
Detailed description of the invention
Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, the present invention is given furtherly
It is bright.
Fig. 1 is the schematic diagram according to the compensation data method of the display device of one embodiment of the invention；
Fig. 2 is the structural schematic diagram according to the display device of one embodiment of the invention；
Fig. 3 is showing according to the display device shown using 10bit data driver and 6bit of one embodiment of the invention
It is intended to；
Fig. 4 is the schematic diagram of the DAC output mode of data driver in display device shown in Fig. 1；
Fig. 5 is the schematic diagram according to the DAC output mode of data driver in the display device of another embodiment of the present invention.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate
It the present invention rather than limits the scope of the invention, after the present invention has been read, those skilled in the art are to of the invention each
The modification of kind equivalent form falls within the application range as defined in the appended claims.
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, there is identical structure or function in some figures so that simplified form is easy to understand
Component only symbolically depicts one of those, or has only marked one of those.Herein, "one" is not only indicated
" only this ", can also indicate the situation of " more than one ".
Embodiment 1:
Display device includes the display panel for showing picture, and the compensation data method of the display device of that present invention is to display
The flashing (Flicker) of panel compensates.
Fig. 1 show the schematic diagram of the compensation data method of display device in the present embodiment, which includes following
Step:
The first step, by display panel 10 light up as flashing detecting picture, by display panel 10 divide for N (N is positive integer) it is a
The flicker value (Flicker value) in each region is detected in region；
Second step obtains first common voltage of corresponding each region as best common voltage according to flicker value；
First common voltage of corresponding each region and benchmark common voltage are carried out uplink comparison, according to upper by third step
Result output the first compensation gamma (Gamma) voltage of row comparison；
4th step exports the first offset data voltage according to the first compensation gamma electric voltage, and display panel 10 is mended according to first
Data voltage is repaid to light；
5th step detects the flicker value in each region of display panel 10 again；
6th step judges whether there is the region that flicker value is greater than preset value；If so, choosing flicker value is more than preset value
The best common voltage in those regions is replaced with corresponding second common electrical by the first common voltage according to flicker value by region
Pressure；
The best common voltage of corresponding each region and benchmark common voltage are carried out downlink comparison, under by the 7th step
Display device is written in the compensation data information of each region by the result of row comparison.
Preferably, it is further comprised the steps of: before the first step and flashing adjustment is carried out to the middle section of display panel 10, it will
Common voltage corresponding to the flicker value of middle section is as benchmark common voltage.
As shown in Fig. 2, the display device of the present embodiment includes: display panel 10, the compensation data dress for flicker compensation
It sets, the data driver (not shown) of multiple data voltages (Vdate) is exported to display panel 10 and connects data driver
Sequence controller 30 (TCON).When carrying out compensation data, compensation data device is for detecting N number of region in display panel 10
Flicker value, and first common voltage of corresponding each region is obtained as best common voltage according to flicker value；Timing control
The best common voltage and benchmark common voltage of correspondence each region that device 30 is used to export in compensation data device carry out uplink
Comparison, according to the first compensation gamma electric voltage of result output of uplink comparison to data driver；Data driver is used for according to the
One compensation gamma electric voltage exports the first offset data voltage to display panel 10；Display panel 10 is according to the first offset data voltage
It lights；Compensation data device is also used to choose the region that flicker value is more than preset value, according to flicker value by those regions of selection
Best common voltage corresponding second common voltage is replaced with by the first common voltage；Sequence controller 30 is also used to data
The best common voltage and benchmark common voltage of correspondence each region of compensation device output carry out downlink comparison, according to downlink pair
The result of ratio stores the compensation data information of each region.
As shown in Fig. 2, the compensation data device of the present embodiment includes that scintillation detector 21, compensation calculation device 22 and replacement are single
First (not shown).Scintillation detector 21 is used to carry out display panel 10 flashing detecting, and the flicker value that detecting is obtained inputs
Compensation calculation device 22.Compensation calculation device 22 is preset with common voltage-flicker value relation curve data, according to common voltage-flashing
It is worth the first common voltage or the second common voltage that relation curve data acquisition corresponds to flicker value.Replacement unit is dodged for choosing
Bright value is more than the region of preset value, is replaced the best common voltage in those regions of selection by the first common voltage according to flicker value
It is changed to corresponding second common voltage.
Wherein, compensation calculation device 22 is preset with common voltage-flicker value (Vcom-Flicker) relation curve data, compensation
Calculator 22 calculates the best common voltage of corresponding each region flicker value according to this relation curve data, due to Vcom-
Flicker curve parabolically, so identical flicker value corresponds to two different best common voltages, therefore above-mentioned second step
Middle compensation calculation device 22 is one of them in two best common voltages according to the first common voltage that flicker value is calculated,
Cause some regions of display panel 10 that may still have biggish flicker value deviation after receiving the first common voltage.It will be above-mentioned
Contrast operation in third step is known as uplink comparison, needs to be lighted for the second time later, second of flicker value detecting, and will
Flicker value is more than that the best common voltage in the region of preset value replaces with corresponding second common voltage (i.e. by the first common voltage
Another in corresponding two common voltages of the flicker value in the region), it is uniform to reach entire 10 flicker value of display panel
Effect.
Optionally, the first common voltage is biggish one in corresponding two common voltages of flicker value in the region, with
Corresponding second common voltage of first common voltage is lesser one in corresponding two common voltages of flicker value in the region
It is a；
Alternatively, the first common voltage is lesser one in corresponding two common voltages of flicker value in the region, with this
Corresponding second common voltage of first common voltage is biggish one in corresponding two common voltages of flicker value in the region.
After the completion of compensation data, the electric connection of compensation calculation device 22 and sequence controller 30, data driver are cut off
Compensated data voltage is exported to display panel 10, compensated data in display according to stored compensation data information
Voltage by the adjustment of compensation data information counteract panel different zones TFT parameter, liquid crystal parameter, PI technique difference led
It is uneven to solve display caused by display panel 10 flashes for the different flicker values of cause.
Data driver in display device uses DAC (digital-to-analogue conversion) mode output data voltage.Sequence controller 30
Export multiple gamma electric voltages (be typically 14, be denoted as V1, V2 ..., V14) to data driver, Fig. 3 is a kind of use
The schematic diagram for the display device that 10bit data driver and 6bit are shown, data driver pass through 210A internal resistance (be denoted as R0,
R1 ..., R1023) divided to obtain 1024 optional voltages according to 14 gamma electric voltages, display panel 10 can show 26A grayscale
(be denoted as L0, L1 ..., L63), data voltage corresponding to each grayscale is selected from 1024 optional voltages.
The compensation data method of the display device of that present invention first according to uplink comparison result by multiple gamma electric voltages according to
The flicker value in each region is adjusted to the first compensation gamma electric voltage, then will according to the result of downlink comparison after the detecting of secondary flicker value
It is adjusted to the second compensation gamma electric voltage.In addition, using the above-mentioned data voltage selector channel of data driver DAC mode, this
The compensation data method of the display device of invention can be finely adjusted the data voltage of each region, finally will corresponding each area
The second compensation gamma electric voltage information and data voltage trim information in domain are stored into aobvious as the compensation data information stored for a long time
The data driver or sequence controller 30 of showing device.
Optionally, display panel 10 can show 2nA grayscale, data driver exportable 2mThe different optional electricity of kind numerical value
Pressure, wherein n, m are integer, and m >=n；
Each grayscale corresponds to 2m-nA optional voltage, and the corresponding optional voltage of each grayscale does not repeat；
When a certain region of display panel 10 needs to show a certain grayscale, according to the compensation data information in the region from this
Data voltage output is chosen one as in the corresponding optional voltage of grayscale.
Specifically, Fig. 4 show a kind of schematic diagram of DAC output mode of data driver in the present embodiment, 8 in figure
Data voltage corresponding to grayscale (L1, L2 ..., L8) is chosen from 32 optional voltage (U1, U2 ... U32), and uses
1 pair 4 of mode, it may be assumed that grayscale L1 correspond to optional voltage U1, U2, U3, U4, grayscale L2 correspond to optional voltage U5, U6, U7,
U8 ... grayscale L8 corresponds to optional voltage U29, U30, U31, U32.
It is associated between grayscale and optional voltage by switch 31, during compensation data, sequence controller 30 is according to upper
The folding of the result control switch 31 of row comparison and downlink comparison is realized the effect of above-mentioned " selecting one ", and is completed in compensation data
The folding result of fixed switch 31 afterwards.In display, data driver grayscale according to needed for pixel unit in display panel 10
The folding for controlling multiple groups grayscale switch (D0, D0bar, D1, D1bar, D2, D2bar in such as Fig. 4), so that after flicker compensation
Data voltage be passed to pixel unit.
Embodiment 2:
The present embodiment improves on the basis of embodiment 1, is with the distinctive points of embodiment 1: increasing data drive
The selector channel number of same grayscale is corresponded in dynamic device.
Display panel 10 can show 2 in the present embodimentnA grayscale, the data driver exportable 2mA numerical value is different
Optional voltage, wherein n, m are integer, and m >=n；
Each grayscale corresponds to 2m-n+kA optional data voltage, wherein k is integer, and 1≤k < n；
When a certain region of display panel 10 needs to show a certain grayscale, according to the compensation data information in the region from this
Data voltage output is chosen one as in the corresponding optional voltage of grayscale.
Specifically, Fig. 5 show a kind of schematic diagram of DAC output mode of data driver in the present embodiment, 8 in figure
Data voltage corresponding to grayscale (L1, L2 ..., L8) is chosen from 32 optional voltage (U1, U2 ... U32), and uses
1 pair 8 of mode, it may be assumed that grayscale L1 correspond to optional voltage U1, U2 ..., U8, grayscale L2 correspond to optional voltage U5,
U6 ..., U12, and so on, grayscale L8 correspond to optional voltage U25, U26 ..., U32.
It is associated between grayscale and optional voltage by switch 31, during compensation data, sequence controller 30 is according to upper
The folding of the result control switch 31 of row comparison and downlink comparison is realized the effect of above-mentioned " selecting one ", and is completed in compensation data
The folding result of fixed switch 31 afterwards.In display, data driver grayscale according to needed for pixel unit in display panel 10
The folding for controlling multiple groups grayscale switch (D0, D0bar, D1, D1bar, D2, D2bar in such as Fig. 5), so that after flicker compensation
Data voltage be passed to pixel unit.
Data voltage can be improved by corresponding to the selector channel number of same grayscale in increase data driver in the present embodiment
The range and precision of fine tuning, the needs of further satisfaction flicker compensation.And the second compensation gamma electric voltage of corresponding each region
Information and data voltage trim information fix write-in display device after the adjustment, than the data driver institute for directly using high bit
Need data volume much smaller.
It should be noted that can be carried out to the single pixel of display panel 10 when detecting the flicker value in each region
Individual grayscale detecting, compensates respectively；It can also be by a plurality of pixel units (such as 2x2,8x8) as basic unit.
The preferred embodiment of the present invention has been described above in detail, but during present invention is not limited to the embodiments described above
Detail can carry out a variety of equivalents to technical solution of the present invention (in full within the scope of the technical concept of the present invention
Amount, shape, position etc.), these equivalents all belong to the scope of protection of the present invention.
Claims (8)
1. a kind of compensation data method of display device, display device include display panel；It is characterised in that it includes following step
It is rapid:
Display panel is lit up as flashing detecting picture, display panel is divided into N (N is positive integer) a region, is detected by the first step
The flicker value in each region；
Second step obtains first common voltage of corresponding each region as best common voltage according to flicker value；
First common voltage of corresponding each region and benchmark common voltage are carried out uplink comparison, according to uplink pair by third step
Result output the first compensation gamma electric voltage of ratio；
4th step exports the first offset data voltage to display panel according to the first compensation gamma electric voltage, and display panel is according to the
One offset data voltage is lighted；
5th step detects the flicker value in each region of display panel again；
6th step judges whether there is the region that flicker value is more than preset value；If so, choosing the area that flicker value is more than preset value
It is public to be replaced with corresponding second by the first common voltage according to flicker value by domain for the best common voltage in those regions of selection
Voltage；
The best common voltage of corresponding each region and benchmark common voltage are carried out downlink comparison, according to downlink pair by the 7th step
Display device is written in the compensation data information of each region by the result of ratio.
2. compensation data method according to claim 1, which is characterized in that further comprised the steps of: before the first step
Flashing adjustment is carried out to the middle section of display panel, using common voltage corresponding to the flicker value of middle section as base
Quasi- common voltage.
3. the compensation data method of display device according to claim 1 or 2, it is characterised in that:
According to common voltage-flicker value relation curve data, same flicker value is corresponding, and there are two different common voltages；
First common voltage is biggish one in corresponding two common voltages of flicker value in the region, with first public affairs
Corresponding second common voltage of common voltage is lesser one in corresponding two common voltages of flicker value in the region；
Alternatively, first common voltage is lesser one in corresponding two common voltages of flicker value in the region, with this
Corresponding second common voltage of first common voltage is biggish one in corresponding two common voltages of flicker value in the region.
4. a kind of display device, using the compensation data method of display device described in the claims 1-3 any one,
It is characterized in that, comprising: display panel, compensation data device, data driver and sequence controller；
The compensation data device is used to detect the flicker value in N number of region in display panel, and is obtained and corresponded to respectively according to flicker value
First common voltage in a region is as best common voltage；
The best common voltage and benchmark common electrical of correspondence each region that sequence controller is used to export in compensation data device
Pressure carries out uplink comparison, according to the first compensation gamma electric voltage of result output of uplink comparison to data driver；
The data driver is used to export the first offset data voltage to display panel according to the first compensation gamma electric voltage；
The display panel is lighted according to the first offset data voltage；
The compensation data device is also used to choose the region that flicker value is more than preset value, according to flicker value by those areas of selection
The best common voltage in domain replaces with corresponding second common voltage by the first common voltage；
The best common voltage and benchmark of correspondence each region that the sequence controller is also used to export in compensation data device
Common voltage carries out downlink comparison, and the compensation data information of each region is stored according to the result that downlink compares.
5. display device as claimed in claim 4, which is characterized in that the compensation data device specifically includes:
Scintillation detector, for carrying out flashing detecting, and the flicker value input offset calculator that detecting is obtained to display panel；
Compensation calculation device, compensation calculation device is preset with common voltage-flicker value relation curve data, according to common voltage-flashing
It is worth the first common voltage or the second common voltage that relation curve data acquisition corresponds to flicker value；
Replacement unit, for choosing the region that flicker value is more than preset value, according to flicker value by the best of those regions of selection
Common voltage replaces with corresponding second common voltage by the first common voltage.
6. display device as claimed in claim 5, which is characterized in that according to common voltage-flicker value relation curve data, together
One flicker value is corresponding, and there are two different common voltages；
First common voltage is biggish one in corresponding two common voltages of flicker value in the region, with first public affairs
Corresponding second common voltage of common voltage is lesser one in corresponding two common voltages of flicker value in the region；
Alternatively, first common voltage is lesser one in corresponding two common voltages of flicker value in the region, with this
Corresponding second common voltage of first common voltage is biggish one in corresponding two common voltages of flicker value in the region.
7. display device according to claim 4, it is characterised in that:
The display panel can show 2nA grayscale, the data driver exportable 2mThe different optional voltage of kind numerical value, wherein
N, m is integer, and m >=n；
Each grayscale corresponds to 2m-nA optional voltage, and the corresponding optional voltage of each grayscale does not repeat；
When a certain region of display panel needs to show a certain grayscale, according to the compensation data information in the region from the grayscale pair
Data voltage output is chosen one as in the optional voltage answered.
8. display device according to claim 4, it is characterised in that:
The display panel can show 2nA grayscale, the data driver exportable 2mThe different optional voltage of a numerical value, wherein
N, m is integer, and m >=n；
Each grayscale corresponds to 2m-n+kA optional data voltage, wherein k is integer, and 1≤k < n；
When a certain region of display panel needs to show a certain grayscale, according to the compensation data information in the region from the grayscale pair
Data voltage output is chosen one as in the optional voltage answered.
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Effective date of registration: 20200910 Address after: No.7 Tianyou Road, Qixia District, Nanjing City, Jiangsu Province Applicant after: NANJING CEC PANDA FPD TECHNOLOGY Co.,Ltd. Address before: Nanjing Crystal Valley Road in Qixia District of Nanjing City Tianyou 210033 Jiangsu province No. 7 Applicant before: NANJING CEC PANDA FPD TECHNOLOGY Co.,Ltd. Applicant before: NANJING CEC PANDA LCD TECHNOLOGY Co.,Ltd. Applicant before: NANJING HUADONG ELECTRONICS INFORMATION & TECHNOLOGY Co.,Ltd. |
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