CN105632449B - The gamma electric voltage adjusting method and device of a kind of display panel - Google Patents
The gamma electric voltage adjusting method and device of a kind of display panel Download PDFInfo
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- CN105632449B CN105632449B CN201610210400.4A CN201610210400A CN105632449B CN 105632449 B CN105632449 B CN 105632449B CN 201610210400 A CN201610210400 A CN 201610210400A CN 105632449 B CN105632449 B CN 105632449B
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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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Abstract
The invention discloses the gamma electric voltage adjusting method and device of a kind of display panel, the temperature of environment is presently in by obtaining display panel；According to predetermined temperature and the corresponding relation of the Dc bias offset of each GTG, determine that display panel is presently in the Dc bias offset of each GTG corresponding to the temperature of environment；Display panel according to determining be presently in the temperature of environment corresponding to each GTG Dc bias offset to the gamma electric voltage of each GTG of display panel to being adjusted, the difference of the absolute value of the gamma electric voltage pair of each GTG after regulation is equal to the Dc bias offset of each GTG.Due to under condition of different temperatures, gamma electric voltage is adjusted using the Dc bias offset of each GTG corresponding with Current Temperatures, making the regulating effect under condition of different temperatures preferable, effectively improving direct current image retention caused by display panel.
Description
Technical field
The present invention relates to display technology field, espespecially a kind of display panel gamma electric voltage adjusting method and device.
Background technology
Liquid crystal display device (Liquid Crystal Display, abbreviation LCD) has compact, low-power consumption and low-heat
The advantages that amount, liquid crystal display device is shown one's talent in numerous different types of display devices, be widely used, as TV,
On the modernization information equipment such as computer, tablet personal computer and mobile phone.
Image retention is one of display quality of liquid crystal panel requirement.For the principle occurred according to image retention, image retention can be divided into directly
Flow image retention and exchange image retention.Exchange image retention Producing reason is usually to think under long-term AC field effect, alignment films table
Rheology relaxation occurs for the molecule in face, so as to cause the orientation of alignment films that slight change occurs, can not be completely recovered to original state,
So as to cause the generation of image retention, this image retention is permanent, once producing, image retention would not disappear.For exchange image retention, one
As can only be improved from the property of alignment films itself, to improve the alignment capability of alignment films.
The reason for direct current image retention Producing reason has been generally acknowledged that two factors, when exist inside liquid crystal panel impurity from
Son, second, Dc bias be present in liquid crystal panel driving.Due to the presence of the two factors, when liquid crystal panel show for a long time it is same
During picture, displacement occurs in the presence of Dc bias for the foreign ion inside liquid crystal panel, and is collected at positive and negative electrode
The alignment films on surface and the interface of liquid crystal, so as to produce direct current residual voltage in panel itself, when direct current residual voltage is enough
When driving liquid crystal molecule change, it will influence to be actually loaded to the voltage of liquid crystal layer both sides, ultimately result in the generation of image retention.Direct current
Image retention is due in the presence of Dc bias, and foreign ion is gathered at alignment films and caused, after Dc bias removes,
Foreign ion can be again from alignment layer surface desorption, therefore direct current image retention can recover.The restorability of image retention is straight
Stream image retention and the fundamental difference for exchanging image retention.
At present for small size liquid crystal panel, direct current image retention is main image retention type.In order to improve direct current image retention,
Generally there are following several directions：One is to try to reduce the impurity ion content inside liquid crystal panel, is mainly contained by developing impurity
Less liquid crystal and aligning film material are measured, reduces foreign ion introduced in manufacturing process as far as possible to realize.Two are to try to subtract
Few Dc bias, on the one hand reducing Dc bias can be reduced by liquid crystal panel design, such as the storage electricity of increase pixel
Hold, reduce TFT leakage current etc. to realize, on the other hand can reduce direct current by optimizing aligning film material and liquid crystal material
Bias, another further aspect can reduce Dc bias from circuit drives regulation.For ion concentration reduce method, on the one hand by
Contained ion concentration is very low in current alignment films and liquid crystal, think further to reduce ion concentration it is relatively difficult, although logical
Dc bias can effectively be reduced by crossing the method for optimization of material, but the developing material cycle is longer, and different liquid crystal and be taken
It is required to carry out matching test to film, exploitation and test period are longer.On the other hand, the foreign ion introduced in terms of processing procedure
Control can be optimized, but can not be completely eliminated in processing procedure and bring foreign ion.
Therefore, mainly direct current image retention is improved by reducing the method for Dc bias at present, but at present because pixel designs
With the limitation of array process, it is impossible to avoid direct current from remaining completely, it is a kind of effective to adjust gamma electric voltage by circuit drives
And the method for easily reducing Dc bias.But existing circuit drives gamma electric voltage adjusting method is all under normal temperature condition
Carry out, because certain change can occur for the movement velocity of foreign ion, the size of Dc bias under the high temperature conditions, therefore
Under normal temperature condition carry out gamma electric voltage regulation so as to Dc bias compensate, still suffer under the high temperature conditions partially
Weight so that regulating effect is bad, can still produce direct current image retention.
The content of the invention
The embodiment of the present invention provides a kind of the gamma electric voltage adjusting method and device of display panel, to solve prior art
The Dc bias compensation effect of display panel bad the problem of still producing direct current image retention under middle different temperatures.
In a first aspect, the embodiment of the present invention provides a kind of gamma electric voltage adjusting method of display panel, including：
Obtain the temperature that the display panel is presently in environment；
According to predetermined temperature and the corresponding relation of the Dc bias offset of each GTG, the display panel is determined
It is presently in the Dc bias offset of each GTG corresponding to the temperature of environment；
The display panel according to determining be presently in the temperature of environment corresponding to each GTG Dc bias compensation
Value to the gamma electric voltage of each GTG of the display panel to being adjusted, make each GTG after regulation gamma electric voltage pair it is absolute
The difference of value is equal to the Dc bias offset of each GTG.
In a kind of possible implementation, in the above method provided in an embodiment of the present invention, the basis is true in advance
Fixed temperature and the corresponding relation of the Dc bias offset of each GTG, determine that the display panel is presently in the temperature of environment
The Dc bias offset of corresponding each GTG, including：
According to temperature corresponding to predetermined each GTG and the relation curve of Dc bias offset, the display is determined
The Dc bias offset of each GTG corresponding to the temperature of the presently described environment of panel.
In a kind of possible implementation, in the above method provided in an embodiment of the present invention, each GTG is corresponding
Temperature and the relation curve of Dc bias offset determined by following manner：
Chosen respectively under the conditions of multiple reference temperatures and multiple refer to GTG；
For each described with reference to GTG execution：
After being shown with the preset duration with reference to GTG and minimum gray scale progress preset pattern, image switching shows single
Gray scale image；
When the single gray scale image has image retention, the gamma electric voltage with reference to GTG is adjusted to making the image retention disappear
Lose, and determine the magnitude of voltage of corresponding gamma electric voltage pair when image retention disappears；
The difference of the absolute value of the magnitude of voltage of the corresponding gamma electric voltage pair is used as institute when image retention to determine disappears
State the Dc bias offset with reference to GTG；
For each reference temperature, according to each Dc bias offset with reference to GTG determined, fitting generation
The relation function of GTG and Dc bias offset；
According to the relation function of the GTG generated under the conditions of each reference temperature and Dc bias offset, each GTG is determined
Corresponding temperature and the relation curve of Dc bias offset.
In a kind of possible implementation, in the above method provided in an embodiment of the present invention, the basis is true in advance
Fixed temperature and the corresponding relation of the Dc bias offset of each GTG, determine that the display panel is presently in the temperature of environment
The Dc bias offset of corresponding each GTG, including：
Temperature range according to belonging to the display panel is presently in the temperature of environment, and predetermined each temperature
The relation curve of GTG corresponding to scope and Dc bias offset, determine the temperature pair of the presently described environment of the display panel
The Dc bias offset for each GTG answered.
In a kind of possible implementation, in the above method provided in an embodiment of the present invention, each temperature range
The relation curve of corresponding GTG and Dc bias offset is determined by following manner：
Chosen respectively under the conditions of multiple reference temperatures and multiple refer to GTG；
For each described with reference to GTG execution：
After being shown with the preset duration with reference to GTG and minimum gray scale progress preset pattern, image switching shows single
Gray scale image；
When the single gray scale image has image retention, the gamma electric voltage with reference to GTG is adjusted to making the image retention disappear
Lose, and determine the magnitude of voltage of corresponding gamma electric voltage pair when image retention disappears；
The difference of the absolute value of the magnitude of voltage of the corresponding gamma electric voltage pair is used as institute when image retention to determine disappears
State the Dc bias offset with reference to GTG；
For each reference temperature, according to each Dc bias offset with reference to GTG determined, fitting generation
The relation function of GTG and Dc bias offset；
According to the relation function of the GTG generated under the conditions of each reference temperature and Dc bias offset, each temperature is determined
The relation curve of GTG corresponding to scope and Dc bias offset.
In a kind of possible implementation, in the above method provided in an embodiment of the present invention, the regulation ginseng
The gamma electric voltage of GTG is examined to making the image retention disappear, including：
Regulation public electrode voltages make the image retention disappear, and determine the public electrode electricity when image retention disappears after regulation
Adjusting size and regulation direction of the pressure relative to former public electrode voltages；
According to the public electrode voltages after the regulation relative to former public electrode voltages adjusting size, regulation direction with
And the public electrode voltages after regulation, to the gamma electric voltage with reference to GTG to being adjusted, make using the gamma after regulation
Voltage is to display picture without image retention.
Second aspect, the embodiment of the present invention provide a kind of gamma electric voltage adjusting means of display panel, including：
Temperature acquiring unit, the temperature of environment is presently in for obtaining the display panel；
Dc bias offset determining unit, for the Dc bias offset according to predetermined temperature and each GTG
Corresponding relation, determine that the display panel is presently in the Dc bias offset of each GTG corresponding to the temperature of environment；
Gamma electric voltage adjustment unit, for being presently according to the display panel determined corresponding to the temperature of environment
The Dc bias offset of each GTG, to being adjusted, makes each ash after regulation to the gamma electric voltage of each GTG of the display panel
The difference of the absolute value of the gamma electric voltage pair of rank is equal to the Dc bias offset of each GTG.
In a kind of possible implementation, in said apparatus provided in an embodiment of the present invention, the Dc bias is mended
Value determining unit is repaid, it is bent specifically for the temperature according to corresponding to predetermined each GTG and the relation of Dc bias offset
Line, determine the Dc bias offset of each GTG corresponding to the temperature of the presently described environment of the display panel.
In a kind of possible implementation, in said apparatus provided in an embodiment of the present invention, in addition to：Relation curve
Determining unit, multiple GTG is referred to for being chosen respectively under the conditions of multiple reference temperatures；Held for each GTG that refers to
OK：After being shown with the preset duration with reference to GTG and minimum gray scale progress preset pattern, image switching shows single GTG
Image；When the single gray scale image has image retention, the gamma electric voltage with reference to GTG is adjusted to making the image retention disappear,
And determine the magnitude of voltage of corresponding gamma electric voltage pair when image retention disappears；Corresponding gamma electricity when being disappeared with the image retention determined
The difference of the absolute value of the magnitude of voltage of pressure pair is as the Dc bias offset with reference to GTG；For each reference temperature,
According to each Dc bias offset with reference to GTG determined, the relation of fitting generation GTG and Dc bias offset
Function；According to the relation function of the GTG generated under the conditions of each reference temperature and Dc bias offset, each GTG pair is determined
The temperature answered and the relation curve of Dc bias offset.
In a kind of possible implementation, in said apparatus provided in an embodiment of the present invention, the Dc bias is mended
Value determining unit is repaid, is additionally operable to the temperature range according to belonging to the display panel is presently in the temperature of environment, and in advance
The relation curve of GTG and Dc bias offset, determines that the display panel is presently described corresponding to each temperature range determined
The Dc bias offset of each GTG corresponding to the temperature of environment.
In a kind of possible implementation, in said apparatus provided in an embodiment of the present invention, the relation curve is true
Order member, is additionally operable to choose respectively under the conditions of multiple reference temperatures and multiple refers to GTG；Held for each GTG that refers to
OK：After being shown with the preset duration with reference to GTG and minimum gray scale progress preset pattern, image switching shows single GTG
Image；When the single gray scale image has image retention, the gamma electric voltage with reference to GTG is adjusted to making the image retention disappear,
And determine the magnitude of voltage of corresponding gamma electric voltage pair when image retention disappears；Corresponding gamma electricity when being disappeared with the image retention determined
The difference of the absolute value of the magnitude of voltage of pressure pair is as the Dc bias offset with reference to GTG；For each reference temperature,
According to each Dc bias offset with reference to GTG determined, the relation of fitting generation GTG and Dc bias offset
Function；According to the relation function of the GTG generated under the conditions of each reference temperature and Dc bias offset, each temperature model is determined
The relation curve of GTG and Dc bias offset corresponding to enclosing.
In a kind of possible implementation, in said apparatus provided in an embodiment of the present invention, the relation curve is true
Order member, being additionally operable to regulation public electrode voltages makes the image retention disappear, and determines public after regulation when the image retention disappears
Adjusting size and regulation direction of the electrode voltage relative to former public electrode voltages；According to the public electrode voltages after the regulation
Relative to the public electrode voltages after the adjusting size of former public electrode voltages, regulation direction and regulation, to described with reference to ash
The gamma electric voltage of rank makes using the gamma electric voltage after regulation to display picture without image retention to being adjusted.
The present invention has the beneficial effect that：
The gamma electric voltage adjusting method and device of display panel provided in an embodiment of the present invention, worked as by obtaining display panel
The temperature of preceding local environment；According to predetermined temperature and the corresponding relation of the Dc bias offset of each GTG, it is determined that aobvious
Show that panel is presently in the Dc bias offset of each GTG corresponding to the temperature of environment；It is current according to the display panel determined
The Dc bias offset of each GTG corresponding to the temperature of local environment is to the gamma electric voltage of each GTG of display panel to adjusting
Section, the difference of the absolute value of the gamma electric voltage pair of each GTG after regulation is set to be equal to the Dc bias offset of each GTG.Due to pin
To under condition of different temperatures, being adjusted using the Dc bias offset of each GTG corresponding with Current Temperatures to gamma electric voltage
Section, makes the regulating effect under condition of different temperatures preferable, effectively improves direct current image retention caused by display panel.
Brief description of the drawings
Fig. 1 is one of flow chart of gamma electric voltage adjusting method of display panel in the embodiment of the present invention；
Fig. 2 is two of the flow chart of the gamma electric voltage adjusting method of display panel in the embodiment of the present invention；
Fig. 3 is the structural representation of the gamma electric voltage adjusting method device of display panel in the embodiment of the present invention；
Fig. 4 a are one of gridiron pattern grey menu design sketch provided in an embodiment of the present invention；
Fig. 4 b are the two of gridiron pattern grey menu design sketch provided in an embodiment of the present invention；
Fig. 4 c are the three of gridiron pattern grey menu design sketch provided in an embodiment of the present invention；
Fig. 5 is the graph of relation of GTG provided in an embodiment of the present invention and Dc bias offset；
Fig. 6 is temperature provided in an embodiment of the present invention and the graph of relation of Dc bias offset.
Embodiment
For display panel under different temperatures present in prior art Dc bias compensation effect it is bad still produce it is straight
The problem of flowing image retention, the gamma electric voltage adjusting method of display panel provided in an embodiment of the present invention, as shown in figure 1, performing step
It is as follows：
S101, obtain the temperature that display panel is presently in environment；
S102, the corresponding relation according to predetermined temperature and the Dc bias offset of each GTG, determine display surface
Plate is presently in the Dc bias offset of each GTG corresponding to the temperature of environment；
The display panel that S103, basis are determined is presently in the Dc bias compensation of each GTG corresponding to the temperature of environment
Value, to being adjusted, makes the absolute value of the gamma electric voltage pair of each GTG after regulation to the gamma electric voltage of each GTG of display panel
Difference is equal to the Dc bias offset of each GTG.
The gamma electric voltage adjusting method of above-mentioned display panel provided in an embodiment of the present invention, due to for condition of different temperatures
Under, gamma electric voltage is adjusted using the Dc bias offset of each GTG corresponding with Current Temperatures, made in different temperatures
Under the conditions of regulating effect it is preferable, effectively improve direct current image retention caused by display panel.
The specific implementation of above steps is described in detail below.
In above-mentioned steps S102, closed according to predetermined temperature is corresponding with the Dc bias offset of each GTG
System, determines that display panel is presently in the Dc bias offset of each GTG corresponding to the temperature of environment, can specifically include：
According to temperature corresponding to predetermined each GTG and the relation curve of Dc bias offset, display panel is determined
The Dc bias offset of each GTG corresponding to the temperature of current environment.
Further, temperature corresponding to each GTG can be true by following manner with the relation curve of Dc bias offset
It is fixed：
Chosen respectively under the conditions of multiple reference temperatures and multiple refer to GTG；
For each the step of performing figure as indicated with 2 with reference to GTG：
S201, to be carried out with reference to GTG and minimum gray scale after the preset duration of preset pattern show, image switching display is singly
One gray scale image；
S202, when single gray scale image has image retention, regulation with reference to GTG gamma electric voltage to making image retention disappear, and really
Determine the magnitude of voltage of corresponding gamma electric voltage pair when image retention disappears；
The difference of the absolute value of the magnitude of voltage of corresponding gamma electric voltage pair is used as ginseng when S203, the image retention to determine disappear
Examine the Dc bias offset of GTG；
For each reference temperature, according to the Dc bias offset for respectively referring to GTG determined, fitting generation GTG
With the relation function of Dc bias offset；
According to the relation function of the GTG generated under the conditions of each reference temperature and Dc bias offset, each GTG is determined
Corresponding temperature and the relation curve of Dc bias offset.Temperature compensates with Dc bias as corresponding to each GTG determined
The relation curve of value, it may be determined that go out Dc bias compensation of the temperature to each GTG just that display panel is presently in environment
Value.So as to which, to being adjusted, compensation produces the Dc bias of image retention by the gamma electric voltage of each GTG, improve the direct current of display device
Image retention.Because the above method is to the adaptability under condition of different temperatures so that carry out the gamma of display device using the above method
The regulation of voltage, the display picture effect after gamma electric voltage regulation can be lifted, so that the direct current as caused by Dc bias
Image retention is effectively improved.
In a kind of enforceable mode, in above-mentioned step S102, according to the straight of predetermined temperature and each GTG
The corresponding relation of slide-back value is flowed, determines that display panel is presently in the Dc bias benefit of each GTG corresponding to the temperature of environment
Value is repaid, can also specifically be included：
Temperature range according to belonging to display panel is presently in the temperature of environment, and predetermined each temperature range
The relation curve of corresponding GTG and Dc bias offset, determines each GTG corresponding to the temperature of display panel current environment
Dc bias offset.
Further, the relation curve of GTG corresponding to each temperature range and Dc bias offset is true by following manner
It is fixed：
Chosen respectively under the conditions of multiple reference temperatures and multiple refer to GTG；
Performed as shown in Figure 2 with reference to GTG for each：
S201, to be carried out with reference to GTG and minimum gray scale after the preset duration of preset pattern show, image switching display is singly
One gray scale image；
S202, when single gray scale image has image retention, regulation with reference to GTG gamma electric voltage to making image retention disappear, and really
Determine the magnitude of voltage of corresponding gamma electric voltage pair when image retention disappears；
The difference of the absolute value of the magnitude of voltage of corresponding gamma electric voltage pair is used as ginseng when S203, the image retention to determine disappear
Examine the Dc bias offset of GTG；
For each reference temperature, according to the Dc bias offset for respectively referring to GTG determined, fitting generation GTG
With the relation function of Dc bias offset；
According to the relation function of the GTG generated under the conditions of each reference temperature and Dc bias offset, each temperature is determined
The relation curve of GTG corresponding to scope and Dc bias offset.Due in the range of same temperature, Dc bias offset
Vary less, therefore, temperature range that can be according to belonging to display panel is presently in the temperature of environment, and predetermined
The relation curve of GTG corresponding to each temperature range and Dc bias offset, determine that the temperature of display panel current environment is corresponding
Each GTG Dc bias offset.
Further, the above method provided in an embodiment of the present invention, in above-mentioned step S202, regulation is with reference to GTG
Gamma electric voltage can specifically include to making image retention disappear：
Regulation public electrode voltages image retention is disappeared, and determine image retention disappear when regulation after public electrode voltages relative to
The adjusting size of former public electrode voltages and regulation direction；
According to the public electrode voltages after regulation relative to the adjusting size of former public electrode voltages, regulation direction and tune
Public electrode voltages after section, to the gamma electric voltage with reference to GTG to being adjusted, make using the gamma electric voltage after regulation to aobvious
Show picture without image retention.
As follows to determine the Dc bias offset Δ V of L255 GTGs255Exemplified by be specifically described.
Gridiron pattern picture is carried out with L255 GTGs and L0 GTGs to show, chessboard omits picture as shown in fig. 4 a, small in display half
Shi Hou, the picture of image switching low GTG L60 GTGs in showing.In specific application, can be shown as needed using other
The figure of grey menu carrys out display picture, also can switch to during image switching it is other in low GTG picture, the embodiment of the present invention
It is not limited specifically.
Now, judge whether L60 grey menus have image retention, if being judged as YES, further determine that the type of image retention for just
Image retention or negative after image, positive after image and negative after image are as shown in figures 4 b and 4 c.Wherein, positive after image is the place of corresponding original black contrast
Black compared to other contrasts, the place of corresponding original white contrast is white compared to other contrasts；Negative after image is the ground of corresponding original black contrast
Side is white compared to other contrasts, and the place of corresponding original white contrast is black compared to other contrasts.
Further, there is the image retention type of image retention according to picture, public electrode voltages are adjusted, have the picture
Some image retentions disappear or most gently, record adjusting size and regulation of the public electrode voltages now relative to former public electrode voltages
Direction.Adjusting size and regulation direction further according to public electrode voltages are to gamma electric voltage corresponding to L255 GTGs to adjusting
Section.
Specifically, the gamma electric voltage in the embodiment of the present invention is to for a pair of symmetrical gamma electric voltages, respectively L255 GTGs
Gamma electric voltage under positive frame and negative frame state, uses V individually belowGMA1And VGMA2Represent.Symmetrical gamma electric voltage under normal circumstances
VGMA1And VGMA2Absolute value it is identical, symbol is opposite.In the specific implementation, can be adjusted according to the regulation direction of public electrode voltages
Save VGMA1And VGMA2, for example, when being positive direction in the regulation direction of public electrode voltages, then by VGMA1Or VGMA2Adjusted to positive direction
Section, its adjusting size can determine according to public electrode voltages adjusting size, for example, can be by VGMA1Or VGMA2It is adjusted to primary voltage
The 1/5 of value.According to being actually needed, can also according to the tessellated display time to gamma electric voltage to carrying out the regulations of other numerical value,
Do not limit herein.
Using the gamma electric voltage after regulation to showing the gridiron pattern picture of L255 GTGs and L0 GTGs again, it is determined that showing picture
Whether face also has image retention, if still having image retention, circulation performs aforesaid operations, until display picture, without image retention, record is now
Gamma electric voltage pair magnitude of voltage VGMA1' and VGMA2', and the difference of the absolute value of the magnitude of voltage of gamma electric voltage pair now is made
For the Dc bias offset Δ V of L255 GTGs255, i.e. Δ V255=| VGMA1'|-|VGMA2'|。
Using above-mentioned same operation, multiple GTGs can be determined respectively, it is straight as corresponding to GTG L180, L128, L80 and L48
Flow slide-back value Δ V180、ΔV128、ΔV80And Δ V48, so as to according between multigroup GTG and Dc bias offset
Corresponding relation, the relation function of GTG and Dc bias offset is fitted, in the specific implementation, GTG compensates with Dc bias
The relation function of value can be quadratic function, be represented by：
Y=k11x2+k12x+k13；
Wherein, x represents GTG, and y represents Dc bias offset, k11、k12、k13For coefficient.
The relation function of the above-mentioned GTG determined and Dc bias offset is the temperature that display panel is presently in environment
Determined under the conditions of degree, choose multiple reference temperatures, GTG corresponding to the reference temperature can be determined for each reference temperature
With the relation function of Dc bias offset.For example, 0,20,40,60 and 80 degree Celsius of selection is reference temperature, respectively above-mentioned
Above-mentioned operation is performed under the conditions of reference temperature to determine for GTG corresponding to each reference temperature and Dc bias offset
Relation function, each relation function are as follows：
yT0=aT0x2+bT0x+cT0；
yT20=aT20x2+bT20x+cT20；
yT40=aT40x2+bT40x+cT40；
yT60=aT60x2+bT60x+cT60；
yT80=a80x2+bT80x+cT80；
Wherein, x represents GTG, and y represents Dc bias offset, aT0-a80、bT0-bT80、cT0-cT800-80 DEG C is represented respectively
Under the conditions of each relation function coefficient.Thus, it may be determined that go out the pass of GTG corresponding to different temperatures and Dc bias offset
It is curve.For example, the relation of GTG corresponding to current environmental temperature (Gray Level) and Dc bias compensation initial value (Δ V) is bent
Line is as shown in Figure 5.In addition, can also choose other corresponding relations with reference between GTG and Dc bias offset, GTG is determined
Determine that GTG corresponding to each temperature is mended with Dc bias with the relation function of Dc bias offset, or the other reference temperatures of selection
The relation curve embodiment of the present invention for repaying value is not defined to the selection with reference to GTG and reference temperature.
In the specific implementation, temperature range that can be according to belonging to display panel is presently in the temperature of environment, and determine
The relation curve of GTG corresponding to each temperature range gone out and Dc bias offset, determines the presently described environment of display panel
The Dc bias offset of each GTG corresponding to temperature, so as to which the gamma electric voltage of display panel be adjusted.
Specifically, in temperature T<At 0 DEG C, not to the gamma electric voltage of each GTG of display panel to being adjusted；Temperature T >=
At 0 DEG C, the Dc bias offset of each GTG is determined using following rule：
As 0≤T<At 10 DEG C, according to yT0=aT0x2+bT0x+cT0Relation curve determines the Dc bias offset of each GTG；
As 10≤T<At 30 DEG C, according to yT20=aT20x2+bT20x+cT20Relation curve determines that the Dc bias of each GTG is mended
Repay value；
As 30≤T<At 50 DEG C, according to yT40=aT40x2+bT40x+cT40Relation curve determines that the Dc bias of each GTG is mended
Repay value；
As 50≤T<At 70 DEG C, according to yT60=aT60x2+bT60x+cT60Relation curve determines that the Dc bias of each GTG is mended
Repay value；
As 70≤T, according to yT80=a80x2+bT80x+cT80Relation curve determines the Dc bias offset of each GTG.Again
Display panel according to determining be presently in the temperature of environment corresponding to each GTG Dc bias offset to display panel
The gamma electric voltage of each GTG is to being adjusted, and so as to which compensating direct current biases, the direct current image retention for reducing display picture is horizontal.
Further, according to the GTG generated under the conditions of the above-mentioned each reference temperature determined and Dc bias offset
Relation function, may further determine that the relation curve of temperature corresponding to each GTG and Dc bias offset.Under normal circumstances, temperature
Relation function with Dc bias offset is quadratic function or exponential function, in temperature and the relation letter of Dc bias offset
When number is exponential function, temperature corresponding to each GTG and the expression formula of the relation function of Dc bias offset are as follows：
yL31=a31eb31x；
yL32=a32eb32x；
…
yL255=a255eb255x；
Wherein, x represents temperature, and y represents Dc bias offset, a31-a255、b31-b255Respectively L30-L255 pairs of GTG
The coefficient for the relation function answered.For example, temperature corresponding to L255 GTGs and relation curve such as Fig. 6 institutes of Dc bias offset
Show.
In the specific implementation, because the Dc bias below L30 GTGs is smaller, therefore, each GTG can be corresponded to more than
Temperature and Dc bias offset relation curve, gamma electric voltage more than L30 GTGs is adjusted, so as to compensating direct current
Bias, the image retention for reducing display picture are horizontal.
Based on same inventive concept, the embodiment of the present invention provides a kind of gamma electric voltage adjusting means of display panel, the dress
Putting can be set in a display device, structure as shown in figure 3, including：
Temperature acquiring unit 31, the temperature of environment is presently in for obtaining display panel；
Dc bias offset determining unit 32, compensated for the Dc bias according to predetermined temperature and each GTG
The corresponding relation of value, determine that display panel is presently in the Dc bias offset of each GTG corresponding to the temperature of environment；
Gamma electric voltage adjustment unit 33, it is each corresponding to the temperature of environment for being presently according to the display panel determined
The Dc bias offset of GTG, to being adjusted, makes the gal of each GTG after regulation to the gamma electric voltage of each GTG of display panel
The difference of the absolute value of horse voltage pair is equal to the Dc bias offset of each GTG.
Specifically, above-mentioned Dc bias offset determining unit 32, specifically for corresponding according to predetermined each GTG
Temperature and Dc bias offset relation curve, determine the direct current of each GTG corresponding to the temperature of display panel current environment
Slide-back value.
Further, said apparatus provided in an embodiment of the present invention, as shown in figure 3, also including：
Relation curve determining unit 34, multiple GTG is referred to for being chosen respectively under the conditions of multiple reference temperatures；For
Each performed with reference to GTG：After being shown with the preset duration with reference to GTG and minimum gray scale progress preset pattern, image switching shows
Show single gray scale image；When single gray scale image has image retention, regulation refers to the gamma electric voltage of GTG to making image retention disappear, and
Determine the magnitude of voltage of corresponding gamma electric voltage pair when image retention disappears；Corresponding gamma electric voltage pair when being disappeared with the image retention determined
The difference of the absolute value of magnitude of voltage is as the Dc bias offset with reference to GTG；For each reference temperature, according to determining
The Dc bias offset for respectively referring to GTG, the relation function of fitting generation GTG and Dc bias offset；According to each
The relation function of the GTG generated under the conditions of reference temperature and Dc bias offset, determines temperature and direct current corresponding to each GTG
The relation curve of slide-back value.
Specifically, above-mentioned Dc bias offset determining unit 32, is additionally operable to be presently in environment according to display panel
Temperature range belonging to temperature, and the relation of GTG corresponding to predetermined each temperature range and Dc bias offset are bent
Line, determine the Dc bias offset of each GTG corresponding to the temperature of display panel current environment.
Specifically, above-mentioned relation curve determining unit 34, it is additionally operable to choose respectively under the conditions of multiple reference temperatures multiple
With reference to GTG；Performed for each with reference to GTG：Shown with carrying out the preset duration of preset pattern with reference to GTG and minimum gray scale
Afterwards, image switching shows single gray scale image；When single gray scale image has image retention, gamma electric voltage pair of the regulation with reference to GTG
Image retention is disappeared, and determine the magnitude of voltage of corresponding gamma electric voltage pair when image retention disappears；It is corresponding when being disappeared with the image retention determined
Gamma electric voltage pair magnitude of voltage absolute value difference as with reference to GTG Dc bias offset；For each with reference to temperature
Degree, according to the Dc bias offset for respectively referring to GTG determined, the relation of fitting generation GTG and Dc bias offset
Function；According to the relation function of the GTG generated under the conditions of each reference temperature and Dc bias offset, each temperature model is determined
The relation curve of GTG and Dc bias offset corresponding to enclosing.
Further, above-mentioned relation curve determining unit 34, being additionally operable to regulation public electrode voltages makes image retention disappear, and really
Determine adjusting size and regulation direction of public electrode voltages when image retention disappears after regulation relative to former public electrode voltages；According to
Public electrode voltages after regulation are relative to the common electrical after the adjusting size of former public electrode voltages, regulation direction and regulation
Pole tension, to the gamma electric voltage with reference to GTG to being adjusted, make using the gamma electric voltage after regulation to display picture without image retention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, unit or stream in accompanying drawing
Journey is not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that the unit in device in embodiment can describe be divided according to embodiment
It is distributed in the device of embodiment, respective change can also be carried out and be disposed other than in one or more devices of the present embodiment.On
The unit for stating embodiment can be merged into a unit, can also be further split into multiple subelements.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
The gamma electric voltage adjusting method and device of display panel provided in an embodiment of the present invention, worked as by obtaining display panel
The temperature of preceding local environment；According to predetermined temperature and the corresponding relation of the Dc bias offset of each GTG, it is determined that aobvious
Show that panel is presently in the Dc bias offset of each GTG corresponding to the temperature of environment；It is current according to the display panel determined
The Dc bias offset of each GTG corresponding to the temperature of local environment is to the gamma electric voltage of each GTG of display panel to adjusting
Section, the difference of the absolute value of the gamma electric voltage pair of each GTG after regulation is set to be equal to the Dc bias offset of each GTG.Due to pin
To under condition of different temperatures, being adjusted using the Dc bias offset of each GTG corresponding with Current Temperatures to gamma electric voltage
Section, makes the regulating effect under condition of different temperatures preferable, effectively improves direct current image retention caused by display panel.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (12)
- A kind of 1. gamma electric voltage adjusting method of display panel, it is characterised in that including：Obtain the temperature that the display panel is presently in environment；According to predetermined temperature and the corresponding relation of the Dc bias offset of each GTG, determine that the display panel is current The Dc bias offset of each GTG corresponding to the temperature of local environment；The display panel according to determining be presently in the temperature of environment corresponding to each GTG Dc bias offset pair The gamma electric voltage of each GTG of display panel makes the absolute value of the gamma electric voltage pair of each GTG after regulation to being adjusted Difference is equal to the Dc bias offset of each GTG；The Dc bias offset of each GTG is determined, including：After being shown with the preset duration with reference to GTG and minimum gray scale progress preset pattern, image switching shows single gray-scale figure Picture；When the single gray scale image has image retention, the gamma electric voltage with reference to GTG is adjusted to making the image retention disappear, And determine the magnitude of voltage of corresponding gamma electric voltage pair when image retention disappears；The difference of the absolute value of the magnitude of voltage of the corresponding gamma electric voltage pair is used as the ginseng when image retention to determine disappears Examine the Dc bias offset of GTG.
- 2. the method as described in claim 1, it is characterised in that described inclined according to predetermined temperature and the direct current of each GTG The corresponding relation of offset is pressed, determines that the display panel is presently in the Dc bias benefit of each GTG corresponding to the temperature of environment Value is repaid, including：According to temperature corresponding to predetermined each GTG and the relation curve of Dc bias offset, the display panel is determined The Dc bias offset of each GTG corresponding to the temperature of presently described environment.
- 3. method as claimed in claim 2, it is characterised in that temperature corresponding to each GTG and Dc bias offset Relation curve is determined by following manner：Chosen respectively under the conditions of multiple reference temperatures and multiple refer to GTG；It is determined that each Dc bias offset with reference to GTG；For each reference temperature, according to each Dc bias offset with reference to GTG determined, fitting generation GTG With the relation function of Dc bias offset；According to the relation function of the GTG generated under the conditions of each reference temperature and Dc bias offset, determine that each GTG is corresponding Temperature and Dc bias offset relation curve.
- 4. the method as described in claim 1, it is characterised in that described inclined according to predetermined temperature and the direct current of each GTG The corresponding relation of offset is pressed, determines that the display panel is presently in the Dc bias benefit of each GTG corresponding to the temperature of environment Value is repaid, including：Temperature range according to belonging to the display panel is presently in the temperature of environment, and predetermined each temperature range The relation curve of corresponding GTG and Dc bias offset, corresponding to the temperature for determining the presently described environment of the display panel The Dc bias offset of each GTG.
- 5. method as claimed in claim 4, it is characterised in that GTG corresponding to each temperature range compensates with Dc bias The relation curve of value is determined by following manner：Chosen respectively under the conditions of multiple reference temperatures and multiple refer to GTG；It is determined that each Dc bias offset with reference to GTG；For each reference temperature, according to each Dc bias offset with reference to GTG determined, fitting generation GTG With the relation function of Dc bias offset；According to the relation function of the GTG generated under the conditions of each reference temperature and Dc bias offset, each temperature range is determined The relation curve of corresponding GTG and Dc bias offset.
- 6. the method as described in claim 3 or 5, it is characterised in that the regulation gamma electric voltage with reference to GTG is to making The image retention disappears, including：Regulation public electrode voltages make the image retention disappear, and determine the public electrode voltages phase when image retention disappears after regulation Adjusting size and regulation direction for former public electrode voltages；According to the public electrode voltages after the regulation relative to the adjusting size of former public electrode voltages, regulation direction and tune Public electrode voltages after section, to the gamma electric voltage with reference to GTG to being adjusted, make using the gamma electric voltage after regulation To display picture without image retention.
- A kind of 7. gamma electric voltage adjusting means of display panel, it is characterised in that including：Temperature acquiring unit, the temperature of environment is presently in for obtaining the display panel；Dc bias offset determining unit, for pair according to predetermined temperature and the Dc bias offset of each GTG It should be related to, determine that the display panel is presently in the Dc bias offset of each GTG corresponding to the temperature of environment；Gamma electric voltage adjustment unit, for being presently in each ash corresponding to the temperature of environment according to the display panel determined The Dc bias offset of rank, to being adjusted, makes each GTG after regulation to the gamma electric voltage of each GTG of the display panel The difference of the absolute value of gamma electric voltage pair is equal to the Dc bias offset of each GTG；The Dc bias offset of each GTG is determined, including：After being shown with the preset duration with reference to GTG and minimum gray scale progress preset pattern, image switching shows single gray-scale figure Picture；When the single gray scale image has image retention, the gamma electric voltage with reference to GTG is adjusted to making the image retention disappear, And determine the magnitude of voltage of corresponding gamma electric voltage pair when image retention disappears；The difference of the absolute value of the magnitude of voltage of the corresponding gamma electric voltage pair is used as the ginseng when image retention to determine disappears Examine the Dc bias offset of GTG.
- 8. device as claimed in claim 7, it is characterised in that the Dc bias offset determining unit, specifically for root According to temperature corresponding to predetermined each GTG and the relation curve of Dc bias offset, the current institute of the display panel is determined State the Dc bias offset of each GTG corresponding to the temperature of environment.
- 9. device as claimed in claim 8, it is characterised in that also include：Relation curve determining unit, in multiple references Chosen respectively under temperature conditionss and multiple refer to GTG；It is determined that each Dc bias offset with reference to GTG；For each Reference temperature, according to each Dc bias offset with reference to GTG determined, fitting generation GTG is mended with Dc bias Repay the relation function of value；According to the relation function of the GTG that is generated under the conditions of each reference temperature and Dc bias offset, really Temperature and the relation curve of Dc bias offset corresponding to fixed each GTG.
- 10. device as claimed in claim 7, it is characterised in that the Dc bias offset determining unit, be additionally operable to basis The display panel is presently in the temperature range belonging to the temperature of environment, and ash corresponding to predetermined each temperature range Rank and the relation curve of Dc bias offset, determine each GTG corresponding to the temperature of the presently described environment of the display panel Dc bias offset.
- 11. device as claimed in claim 10, it is characterised in that the relation curve determining unit, be additionally operable in multiple ginsengs Examine to choose respectively under temperature conditionss and multiple refer to GTG；It is determined that each Dc bias offset with reference to GTG；For every Individual reference temperature, according to each Dc bias offset with reference to GTG determined, fitting generation GTG and Dc bias The relation function of offset；According to the relation function of the GTG that is generated under the conditions of each reference temperature and Dc bias offset, Determine the relation curve of GTG corresponding to each temperature range and Dc bias offset.
- 12. the device as described in claim 9 or 11, it is characterised in that the relation curve determining unit, it is public to be additionally operable to regulation Common-battery pole tension makes the image retention disappear, and determines the public electrode voltages when image retention disappears after regulation relative to former public The adjusting size of electrode voltage and regulation direction；According to the public electrode voltages after the regulation relative to former public electrode voltages Adjusting size, regulation direction and regulation after public electrode voltages, to the gamma electric voltage with reference to GTG to adjusting Section, make using the gamma electric voltage after regulation to display picture without image retention.
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| CN106601202B (en) * | 2016-12-14 | 2019-04-09 | 昆山龙腾光电有限公司 | Liquid crystal display device, gamma electric voltage regulating device and its adjusting method |
| CN106782412A (en) * | 2017-02-22 | 2017-05-31 | 京东方科技集团股份有限公司 | A kind of image retention cancellation element and method |
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| CN110491350A (en) * | 2019-09-25 | 2019-11-22 | 北京京东方专用显示科技有限公司 | Display panel and its driving method, display device |
| CN110648643B (en) * | 2019-09-30 | 2021-05-11 | 京东方科技集团股份有限公司 | Voltage adjusting method and device and display device |
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| CN112150982B (en) * | 2020-09-23 | 2023-01-10 | 京东方科技集团股份有限公司 | Display device, image display method and system thereof, and storage medium |
| CN113470579B (en) * | 2021-07-01 | 2022-10-21 | 合肥维信诺科技有限公司 | Display device, driving method, storage medium, and terminal |
| CN114664271B (en) * | 2022-05-17 | 2022-09-27 | 惠科股份有限公司 | Common voltage correction circuit, display panel and display device |
| CN114898717B (en) * | 2022-05-30 | 2023-12-26 | 京东方科技集团股份有限公司 | Residual image compensation method, device, display equipment and computer readable storage medium |
| TWI849815B (en) * | 2023-03-23 | 2024-07-21 | 友達光電股份有限公司 | Light intensity calibration mwthod and display system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1928959A (en) * | 2005-09-07 | 2007-03-14 | 中华映管股份有限公司 | Two-dimensional display and its image calibrating circuit and method |
| CN101290412A (en) * | 2007-04-19 | 2008-10-22 | 钰瀚科技股份有限公司 | LCD device drive system |
| CN101320545A (en) * | 2007-06-06 | 2008-12-10 | 联詠科技股份有限公司 | Temperature compensating device used for display |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4201193B2 (en) * | 2004-03-17 | 2008-12-24 | ローム株式会社 | Gamma correction circuit and display device including the same |
| KR20150022160A (en) * | 2013-08-22 | 2015-03-04 | 삼성디스플레이 주식회사 | Method of compensating gamma value, apparatus of performing the method and display apparatus having the same |
-
2016
- 2016-04-06 CN CN201610210400.4A patent/CN105632449B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1928959A (en) * | 2005-09-07 | 2007-03-14 | 中华映管股份有限公司 | Two-dimensional display and its image calibrating circuit and method |
| CN101290412A (en) * | 2007-04-19 | 2008-10-22 | 钰瀚科技股份有限公司 | LCD device drive system |
| CN101320545A (en) * | 2007-06-06 | 2008-12-10 | 联詠科技股份有限公司 | Temperature compensating device used for display |
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