CN106251797B - A kind of gamma-debugged method and device of display panel - Google Patents
A kind of gamma-debugged method and device of display panel Download PDFInfo
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- CN106251797B CN106251797B CN201610566457.8A CN201610566457A CN106251797B CN 106251797 B CN106251797 B CN 106251797B CN 201610566457 A CN201610566457 A CN 201610566457A CN 106251797 B CN106251797 B CN 106251797B
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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
- 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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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Picture Signal Circuits (AREA)
Abstract
The invention discloses a kind of gamma-debugged method and devices of display panel, the electric current that the gamma circuit in the voltage difference by determining the second voltage of first voltage and display panel when showing most white picture of the display panel when showing most black picture and display panel can only be needed, obtains resistance value.Then directly by the obtained resistance value of judgement whether in display panel in the range of setting timing reference, determine whether initial gamma voltage computation sheet needs to be adjusted.It does not need to be adjusted and determines register value if so, determining that initial gamma voltage computation sheet complies with standard；If not, then directly initial gamma voltage computation sheet is adjusted by resistance value, with the new register value of determination, it directly can quickly calculate the corresponding register value of each grayscale, gamma burning is finally carried out to display panel according to the determining corresponding register value of each grayscale, so as to the gamma-debugged method of simplification, production efficiency is improved.
Description
Technical field
The present invention relates to field of display technology, in particular to the gamma-debugged method and device of a kind of display panel.
Background technique
Due to the unstability of production technology, it can make to generate that gamma (gamma) is inconsistent asks between different display panels
In order to solve this problem topic is usually to debug before display panel factory to the gamma of every piece of display panel.It is existing
Gamma-debugged equipment usually tests the grayscale and corresponding brightness of each point of adjustment of the driving IC adjustable supported,
And by debugging to obtain the corresponding optimal register value of each grayscale with controller communication repeatedly.But above-mentioned adjustment method needs
The point of adjustment to be debugged is more, causes the debugging process integrally more complicated, and than relatively time-consuming, to reduce formation efficiency.
Therefore, how to make gamma-debugged method relatively simple, improve production efficiency, be that those skilled in the art need
It solves the problems, such as.
Summary of the invention
The embodiment of the present invention provides a kind of gamma-debugged method and device of display panel, to make gamma-debugged method ratio
It is more simple and easy, to improve production efficiency.
Therefore, the embodiment of the invention provides a kind of gamma-debugged methods of display panel, comprising:
The display panel corresponding first register value and display panel when showing most black picture is obtained to exist
Show corresponding second register value when most white picture；
The initial gamma voltage computation sheet prestored according to the display panel determines that first register value is corresponding
First voltage and the corresponding second voltage of second register value；
Detect the electric current of the gamma circuit of the display panel；
Resistance value is calculated according to the voltage difference and the electric current of the second voltage and the first voltage；
The resistance value is determined whether in preset resistance range, wherein the preset resistance range is the display
Panel is in the range for setting timing reference；
If so, according to the corresponding voltage of each grayscale of the predetermined display panel and the initial gamma
Voltage computation sheet determines the corresponding register value of each grayscale；If it is not, then according to the resistance value to the initial gamma voltage
Computation sheet is adjusted, and determines new gamma electric voltage computation sheet；According to each grayscale of the predetermined display panel
Corresponding voltage and the new gamma electric voltage computation sheet determine the corresponding register value of each grayscale；
Gamma burning is carried out to the display panel according to determining each grayscale corresponding register value.
Preferably, in above-mentioned adjustment method provided in an embodiment of the present invention, the predetermined display panel it is each
The corresponding voltage of grayscale, specifically:
The display panel corresponding first brightness and display panel when showing most black picture is obtained to show
Corresponding second brightness when most white picture；
Each grayscale is determined according to first brightness, second brightness and the corresponding calculation formula of target gamma curve
Corresponding brightness；
Determine that each grayscale is corresponding with voltage curve according to the corresponding brightness of each grayscale and the brightness of the display panel
Voltage.
Preferably, the target gamma curve is that gamma 2.2 is bent in above-mentioned adjustment method provided in an embodiment of the present invention
Line.
Preferably, in above-mentioned adjustment method provided in an embodiment of the present invention, according to first brightness, described second bright
Degree and the corresponding calculation formula of target gamma curve determine the corresponding brightness of each grayscale, specifically:
According to formula:Determine the corresponding brightness of each grayscale；Wherein, n
More than or equal to 0 and to be less than or equal to the integer of M, M indicates the maximum gray of the display panel, and Lv (0) indicates described the
One brightness, Lv (M) indicate second brightness, and Lv (n) indicates corresponding brightness when grayscale is n.
Preferably, determining the corresponding register value of each grayscale in above-mentioned adjustment method provided in an embodiment of the present invention
Later, and before carrying out gamma burning to the display panel according to the determining corresponding register value of each grayscale, further includes:
Whether the determining corresponding register value of each grayscale of detection meets target call；If satisfied, then by determining each ash
The corresponding register value of rank is as the corresponding register value of each grayscale finally determined；If not satisfied, then updating newest gamma
Voltage computation sheet, and the corresponding register value of each grayscale is redefined according to updated gamma electric voltage computation sheet, and will
The corresponding register value of each grayscale redefined is as the corresponding register value of each grayscale finally determined；
Gamma burning is carried out to the display panel according to determining each grayscale corresponding register value, specifically: according to
The corresponding register value of each grayscale finally determined carries out gamma burning to the display panel.
Preferably, detecting the determining corresponding deposit of each grayscale in above-mentioned adjustment method provided in an embodiment of the present invention
Whether device value meets target call, specifically:
The display panel is gradually lighted according to the determining corresponding register value of each grayscale, and detects the display panel
Intrinsic brilliance, establish the relationship of each grayscale with corresponding intrinsic brilliance；
Judge whether each grayscale meets preset gamma curve with the relationship of corresponding intrinsic brilliance；
If meeting, it is determined that the corresponding register value of each grayscale meets target call；
If not meeting, it is determined that the corresponding register value of each grayscale is unsatisfactory for target call.
Correspondingly, the embodiment of the invention also provides a kind of gamma-debugged devices of display panel, comprising: control processing
Device, current detector, optic test device, wherein
The optic test device, for detecting the brightness of the display panel；
The current detector, the electric current of the gamma circuit for detecting the display panel；
The control processor, for detecting the display panel when showing most black picture in the optic test device
Corresponding first register value is obtained, and detects the display panel corresponding second register when showing most white picture
Value；The initial gamma voltage computation sheet prestored according to the display panel determines corresponding first electricity of first register value
Pressure and the corresponding second voltage of second register value；According to the voltage difference of the second voltage and the first voltage
And the electric current of the gamma circuit of the display panel of the current detector detection calculates resistance value；Determine the resistance value
Whether in preset resistance range, wherein the preset resistance range is the display panel in the model for setting timing reference
It encloses；If so, according to the corresponding voltage of each grayscale and the initial gamma potentiometer of the predetermined display panel
It calculates table and determines the corresponding register value of each grayscale；If it is not, then according to the resistance value to the initial gamma voltage computational chart
Lattice are adjusted, and determine new gamma electric voltage computation sheet；According to each grayscale pair of the predetermined display panel
The voltage and the new gamma electric voltage computation sheet answered determine the corresponding register value of each grayscale: according to determining each ash
The corresponding register value of rank carries out gamma burning to the display panel.
Preferably, predefining each ash of the display panel in above-mentioned debugging apparatus provided in an embodiment of the present invention
The method of the corresponding voltage of rank is as follows:
The optic test device obtains the display panel corresponding first brightness and described when showing most black picture
Display panel corresponding second brightness when showing most white picture；
The control processor is according to first brightness, second brightness and the corresponding calculating of target gamma curve
Formula determines the corresponding brightness of each grayscale；It is bent according to the corresponding brightness of each grayscale and the brightness of the display panel and voltage
Line determines the corresponding voltage of each grayscale.
Preferably, the target gamma curve is that gamma 2.2 is bent in above-mentioned debugging apparatus provided in an embodiment of the present invention
Line, the control processor are used for according to first brightness, second brightness and the corresponding calculating of target gamma curve
Formula determines the corresponding brightness of each grayscale, specifically:
According to formula:Determine the corresponding brightness of each grayscale；Wherein, n
More than or equal to 0 and to be less than or equal to the integer of M, M indicates the maximum gray of the display panel, and Lv (0) indicates described the
One brightness, Lv (M) indicate second brightness, and Lv (n) indicates corresponding brightness when grayscale is n.
Preferably, the control processor is also used in determination in above-mentioned debugging apparatus provided in an embodiment of the present invention
After the corresponding register value of each grayscale, and the display panel is being carried out according to determining each grayscale corresponding register value
Before gamma burning, detect whether the determining corresponding register value of each grayscale meets target call；If satisfied, then will be determining
The corresponding register value of each grayscale is as the corresponding register value of each grayscale finally determined；If not satisfied, then updating newest
Gamma electric voltage computation sheet, and the corresponding register value of each grayscale is redefined according to updated gamma electric voltage computation sheet,
And using the corresponding register value of each grayscale redefined as the corresponding register value of each grayscale finally determined；
The control processor is used to carry out gal to the display panel according to the determining corresponding register value of each grayscale
Horse burning, specifically: gamma burning is carried out to the display panel according to the corresponding register value of each grayscale finally determined.
Preferably, the control processor is for detecting determination in above-mentioned debugging apparatus provided in an embodiment of the present invention
The corresponding register value of each grayscale whether meet target call, specifically:
The display panel is gradually lighted according to the determining corresponding register value of each grayscale, and detects the display panel
Intrinsic brilliance, establish the relationship of each grayscale with corresponding intrinsic brilliance；
Judge whether each grayscale meets preset gamma curve with the relationship of corresponding intrinsic brilliance；
If meeting, it is determined that the corresponding register value of each grayscale meets target call；
If not meeting, it is determined that the corresponding register value of each grayscale is unsatisfactory for target call.
The gamma-debugged method and device of display panel provided in an embodiment of the present invention can be needed only by determining display surface
The voltage difference of first voltage and display panel second voltage when show most white picture of the plate when showing most black picture and
Resistance value is calculated in the electric current of gamma circuit in display panel.Whether the resistance value then directly obtained by judgement is aobvious
Show panel in the range of setting timing reference, determines whether initial gamma voltage computation sheet needs to be adjusted.If judgement electricity
Resistance value is in display panel in the range of setting timing reference, it is determined that initial gamma voltage computation sheet comply with standard do not need into
Row adjusts and determines register value, if judging resistance value not in display panel in the range of setting timing reference, it is determined that initial
Gamma electric voltage computation sheet is not inconsistent standardization needs and is adjusted, then logical obtained resistance value directly calculates initial gamma voltage
Table is adjusted the register value new with determination, directly can quickly calculate the corresponding register value of each grayscale, finally
Gamma burning is carried out to display panel according to determining each grayscale corresponding register value, so as to the gamma-debugged side of simplification
Method improves production efficiency.
Detailed description of the invention
Fig. 1 is the flow chart of gamma-debugged method provided in an embodiment of the present invention；
Fig. 2 is the flow chart of the method for the corresponding voltage of each grayscale of determining display panel provided in an embodiment of the present invention；
Fig. 3 is 2.2 curve synoptic diagram of gamma of 64 grayscale display panels；
Fig. 4 is the V-T curve schematic diagram of display panel；
Fig. 5 is the method flow diagram whether determining corresponding register value of each grayscale of detection meets target call；
Fig. 6 is the structural schematic diagram of gamma-debugged device provided in an embodiment of the present invention；
Fig. 7 is current detector provided in an embodiment of the present invention and gamma circuit schematic diagram.
Specific embodiment
In order to make the purpose of the present invention, the technical scheme and advantages are more clear, with reference to the accompanying drawing, to the embodiment of the present invention
The specific embodiment of the gamma-debugged method and device of the display panel of offer is described in detail.
A kind of gamma-debugged method of display panel provided in an embodiment of the present invention, as shown in Figure 1, comprising:
S101, acquisition display panel corresponding first register value and display panel when showing most black picture are being shown
Show corresponding second register value when most white picture；
S102, the initial gamma voltage computation sheet prestored according to display panel determine the first register value corresponding first
Voltage and the corresponding second voltage of the second register value；
The electric current of the gamma circuit of S103, detection display panel；
S104, resistance value is calculated according to the voltage difference and electric current of second voltage and first voltage；
S105, resistance value is determined whether in preset resistance range, wherein preset resistance range is that display panel exists
If the range of timing reference；If so, thening follow the steps S106；If it is not, thening follow the steps S107；
S106, the corresponding voltage of each grayscale and initial gamma voltage computational chart according to predetermined display panel
Lattice determine the corresponding register value of each grayscale；
S107, initial gamma voltage computation sheet is adjusted according to resistance value, determines new gamma electric voltage computational chart
Lattice；Each ash is determined according to the corresponding voltage of each grayscale of predetermined display panel and new gamma electric voltage computation sheet
The corresponding register value of rank；
S108, gamma burning is carried out to display panel according to the determining corresponding register value of each grayscale.
The gamma-debugged method of above-mentioned display panel provided in an embodiment of the present invention can be needed only by determining display panel
The voltage difference of the second voltage of first voltage and display panel when showing most white picture when showing most black picture and aobvious
Show that resistance value is calculated in the electric current of the gamma circuit in panel.Then directly whether shown by the resistance value that judgement obtains
Panel determines whether initial gamma voltage computation sheet needs to be adjusted in the range of setting timing reference.If judging resistance
Value is in display panel in the range of setting timing reference, it is determined that initial gamma voltage computation sheet, which complies with standard, not to need to carry out
Register value is adjusted and determines, if judging resistance value not in display panel in the range of setting timing reference, it is determined that initial gal
Horse voltage computation sheet is not inconsistent standardization needs and is adjusted, then logical obtained resistance value is directly to initial gamma voltage computational chart
Lattice are adjusted the register value new with determination, directly can quickly calculate the corresponding register value of each grayscale, last root
Gamma burning is carried out to display panel according to determining each grayscale corresponding register value, so as to the gamma-debugged method of simplification,
Improve production efficiency.
Register address is generally C8h in display panel, and the parameter in register is 16 system numbers, i.e. register value.
It is both provided with driving IC in general display panel, and IC is driven to be corresponding with IC specifications, has in IC specifications
Initial gamma voltage computation sheet, the initial gamma voltage computation sheet represent each register value and corresponding electricity in display panel
The relationship of pressure, the voltage are the corresponding voltage of each grayscale of display panel.The driving IC being arranged due to different display panels
May be different, so that the corresponding initial gamma electricity of display panel that the corresponding IC specifications of different driving IC are different therefore different
Press computation sheet also different.
In the specific implementation, in above-mentioned adjustment method provided in an embodiment of the present invention, predetermined display panel
The corresponding voltage of each grayscale, as shown in Fig. 2, being specifically as follows:
S201, acquisition display panel corresponding first brightness and display panel when showing most black picture are being shown most
Corresponding second brightness when white picture；
S202, each grayscale pair is determined according to the first brightness, the second brightness and the corresponding calculation formula of target gamma curve
The brightness answered；
S203, determine that each grayscale is corresponding with voltage curve according to the corresponding brightness of each grayscale and the brightness of display panel
Voltage.
In the specific implementation, in above-mentioned adjustment method provided in an embodiment of the present invention, target gamma curve is gamma 2.2
Curve.2.2 curve of gamma is ideal gamma curve, as shown in figure 3, each grayscale and corresponding brightness when representing perfect condition
Relationship in Fig. 3 is so that display panel has 64 grayscale as an example, wherein abscissa represents gray scale, and ordinate represents transmitance,
And gamma curve generally uses transmitance to represent brightness.
In the specific implementation, in above-mentioned adjustment method provided in an embodiment of the present invention, the brightness of display panel and voltage
Curve is the V-T curve testing display panel and obtaining, and the corresponding V-T curve of different display panels is generally different.With Fig. 4 institute
For the V-T curve shown, abscissa indicates that voltage, ordinate indicate brightness.Wherein, when voltage is 0V, display panel is shown
Most white picture；When voltage is 2.5V, display panel shows most black picture；When the brightness that display panel is shown is most white picture
Brightness 50% when, corresponding voltage is about 1.4V.Therefore pass through the corresponding voltage of the available difference brightness of V-T curve,
Then according to the corresponding register value of the available different voltages of gamma electric voltage computation sheet.
In the specific implementation, in above-mentioned adjustment method provided in an embodiment of the present invention, according to the first brightness, the second brightness
And the corresponding calculation formula of target gamma curve determines the corresponding brightness of each grayscale, is specifically as follows:
According to formula:Determine the corresponding brightness of each grayscale；Wherein, n
For the integer more than or equal to 0 and less than or equal to M, M indicates the maximum gray of display panel, and Lv (0) indicates the first brightness, Lv
(M) the second brightness is indicated, Lv (n) indicates corresponding brightness when grayscale is n.
Display panel generally uses 64 grayscale or 256 grayscale to realize that image is shown, wherein 64 grayscale, which represent, has 64
Grayscale value, wherein representing grayscale when minimum gray scale i.e. display panel shows most black picture with 0, it is i.e. aobvious to represent highest grayscale with 63
Show grayscale when Display panel most white picture, therefore when display panel has 64 grayscale, M is equal to 63.The representative of 256 grayscale has
256 grayscale values represent grayscale when minimum gray scale i.e. display panel shows most black picture with 0, represent highest grayscale i.e. with 255
Display panel shows grayscale when most white picture, therefore when display panel has 256 grayscale, M is equal to 255.
In the specific implementation, it in above-mentioned adjustment method provided in an embodiment of the present invention, obtains display panel and is showing most
Corresponding first register value when black picture, specifically: display panel is lighted, and display panel is made to show black picture, is determined aobvious
Show brightness of the panel when showing black picture, then by adjusting the register value in register, display panel is made to show most black picture
Face, and register value of the display panel when showing most black picture is recorded, obtain the first register value.
It is illustrated below by an example and obtains display panel corresponding first register when showing most black picture
The method of value, can specifically include following steps:
(1) display panel is lighted, display panel is obtained by detection and shows that brightness when initial black picture is 0.5；
(2) register value when display panel being shown initial black picture in register increases, and is increased by detection
The brightness of display panel after register value is 0.6；
(3) since brightness 0.6 is greater than brightness 0.5, illustrate that register value adjusts anisotropy, then show display panel just
Begin black picture when register in register value reduce, be reduced the brightness of the display panel after register value by detecting and be
0.4；
(4) register value after reduction is continued to reduce, obtains continuing reducing display panel after register value by detection
Brightness increase, it is determined that brightness of the display panel when show most black picture be 0.4, and record brightness be 0.4 when deposit
Device value, the register value are the first register value.
Similarly, in the specific implementation, in above-mentioned adjustment method provided in an embodiment of the present invention, display panel is obtained aobvious
Show that the method for corresponding second register value is corresponding when showing most black picture with above-mentioned acquisition display panel when most white picture
The method of first register value is similar, is not described in detail here.
In the specific implementation, it in above-mentioned adjustment method provided in an embodiment of the present invention, is posted determining that each grayscale is corresponding
After storage value, and before carrying out gamma burning to display panel according to the determining corresponding register value of each grayscale, also wrap
It includes:
Whether the determining corresponding register value of each grayscale of detection meets target call；If satisfied, then by determining each ash
The corresponding register value of rank is as the corresponding register value of each grayscale finally determined；If not satisfied, then updating newest gamma
Voltage computation sheet, and the corresponding register value of each grayscale is redefined according to updated gamma electric voltage computation sheet, and will
The corresponding register value of each grayscale redefined is as the corresponding register value of each grayscale finally determined；
Gamma burning is carried out to display panel according to determining each grayscale corresponding register value, specifically: according to final
The determining corresponding register value of each grayscale carries out gamma burning to display panel.
In the specific implementation, in above-mentioned adjustment method provided in an embodiment of the present invention, if in the experimental stage to true
Whether the fixed corresponding register value of each grayscale, which meets target call, has carried out a large amount of detection verifying, to prove each of determination
The corresponding register value of grayscale meets target call, then can be after determining the corresponding register value of each grayscale, and directly basis should
The determining corresponding register value of each grayscale carries out gamma burning to display panel, so as to will test determining each grayscale pair
Whether the register value answered meets the omission of this process of target call, so that gamma-debugged method is further simplified.
In the specific implementation, in above-mentioned adjustment method provided in an embodiment of the present invention, it is corresponding to detect determining each grayscale
Register value whether meet target call, as shown in figure 5, being specifically as follows:
S501, display panel is gradually lighted according to the determining corresponding register value of each grayscale, and detects display panel
Intrinsic brilliance establishes the relationship of each grayscale with corresponding intrinsic brilliance；
S502, judge whether each grayscale meets preset gamma curve with the relationship of corresponding intrinsic brilliance；If so, holding
Row step S503；If it is not, thening follow the steps S504；
S503, determine that the corresponding register value of each grayscale meets target call；
S504, determine that the corresponding register value of each grayscale is unsatisfactory for target call.
Based on the same inventive concept, the embodiment of the invention also provides a kind of gamma-debugged device of display panel, such as Fig. 6
It is shown, comprising: control processor 10, current detector 20, optic test device 30, wherein
Optic test device 30, for detecting the brightness of display panel 40；
Current detector 20, the electric current of the gamma circuit for detecting display panel 40；
Control processor 10, for detecting that display panel 40 obtains correspondence when showing most black picture in optic test device
The first register value, and detect corresponding second register value when showing most white picture of display panel 40；According to aobvious
Show that the initial gamma voltage computation sheet that panel 40 prestores determines the corresponding first voltage of the first register value and the second deposit
The corresponding second voltage of device value；The display panel detected according to the voltage difference and current detector of second voltage and first voltage
The electric current of 40 gamma circuit calculates resistance value；Resistance value is determined whether in preset resistance range, wherein preset resistance
Range is display panel 40 in the range for setting timing reference；If so, according to each grayscale pair of predetermined display panel 40
The voltage and initial gamma voltage computation sheet answered determine the corresponding register value of each grayscale；If it is not, then according to resistance value pair
Initial gamma voltage computation sheet is adjusted, and determines new gamma electric voltage computation sheet；According to predetermined display panel
The 40 corresponding voltage of each grayscale and new gamma electric voltage computation sheet determine the corresponding register value of each grayscale: according to true
The fixed corresponding register value of each grayscale carries out gamma burning to display panel 40.
The gamma-debugged device of above-mentioned display panel provided in an embodiment of the present invention can be needed only by determining display panel
The voltage difference of the second voltage of first voltage and display panel when showing most white picture when showing most black picture and aobvious
Show that resistance value is calculated in the electric current of the gamma circuit in panel.Then directly whether shown by the resistance value that judgement obtains
Panel determines whether initial gamma voltage computation sheet needs to be adjusted in the range of setting timing reference.If judging resistance
Value is in display panel in the range of setting timing reference, it is determined that initial gamma voltage computation sheet, which complies with standard, not to need to carry out
Register value is adjusted and determines, if judging resistance value not in display panel in the range of setting timing reference, it is determined that initial gal
Horse voltage computation sheet is not inconsistent standardization needs and is adjusted, then logical obtained resistance value is directly to initial gamma voltage computational chart
Lattice are adjusted the register value new with determination, directly can quickly calculate the corresponding register value of each grayscale, last root
Gamma burning is carried out to display panel according to determining each grayscale corresponding register value, so as to the gamma-debugged method of simplification,
Improve production efficiency.
Gamma circuit is generally located in the driving IC of display panel, in the specific implementation, is provided in the embodiment of the present invention
Above-mentioned debugging apparatus in, as shown in fig. 7, current detector 20 with the current sense point P in gamma circuit 50 by electrically connecting
It connects, to detect the electric current of gamma circuit 50.It wherein, is only to be carried out by taking gamma circuit 50 shown in Fig. 7 as an example to current sense point
Illustrate, in practical applications, gamma circuit can also be the gamma circuit of other structures, be not described in detail here.
In the specific implementation, in above-mentioned debugging apparatus provided in an embodiment of the present invention, control processor is also used to true
After determining the corresponding register value of each grayscale, and gal is being carried out to display panel according to the determining corresponding register value of each grayscale
Before horse burning, detect whether the determining corresponding register value of each grayscale meets target call；If satisfied, then will be determining each
The corresponding register value of grayscale is as the corresponding register value of each grayscale finally determined；If not satisfied, then updating newest gal
Horse voltage computation sheet, and the corresponding register value of each grayscale is redefined according to updated gamma electric voltage computation sheet, and
Using the corresponding register value of each grayscale redefined as the corresponding register value of each grayscale finally determined；
Control processor is used to carry out gamma burning, tool to display panel according to the determining corresponding register value of each grayscale
Body are as follows: gamma burning is carried out to display panel according to the corresponding register value of each grayscale finally determined.
In the specific implementation, in above-mentioned debugging apparatus provided in an embodiment of the present invention, control processor is for detecting really
Whether the fixed corresponding register value of each grayscale meets target call, specifically:
Display panel is gradually lighted according to the determining corresponding register value of each grayscale, and the reality for detecting display panel is bright
Degree, establishes the relationship of each grayscale with corresponding intrinsic brilliance；
Judge whether each grayscale meets preset gamma curve with the relationship of corresponding intrinsic brilliance；
If meeting, it is determined that the corresponding register value of each grayscale meets target call；
If not meeting, it is determined that the corresponding register value of each grayscale is unsatisfactory for target call
In the specific implementation, in above-mentioned debugging apparatus provided in an embodiment of the present invention, each of display panel is predefined
The method of the corresponding voltage of grayscale is as follows:
Optic test device obtains display panel corresponding first brightness and display panel when showing most black picture and is showing
Show corresponding second brightness when most white picture；
Control processor determines each ash according to the first brightness, the second brightness and the corresponding calculation formula of target gamma curve
The corresponding brightness of rank；Determine that each grayscale is corresponding with voltage curve according to the corresponding brightness of each grayscale and the brightness of display panel
Voltage.
In the specific implementation, in above-mentioned debugging apparatus provided in an embodiment of the present invention, target gamma curve is gamma 2.2
Curve, control processor are used to be determined according to the first brightness, the second brightness and the corresponding calculation formula of target gamma curve each
The corresponding brightness of grayscale, specifically:
According to formula:Determine the corresponding brightness of each grayscale；Wherein, n
For the integer more than or equal to 0 and less than or equal to M, M indicates the maximum gray of display panel, and Lv (0) indicates the first brightness, Lv
(M) the second brightness is indicated, Lv (n) indicates corresponding brightness when grayscale is n.
The gamma-debugged method and device of display panel provided in an embodiment of the present invention can be needed only by determining display surface
The voltage difference of first voltage and display panel second voltage when show most white picture of the plate when showing most black picture and
Resistance value is calculated in the electric current of gamma circuit in display panel.Whether the resistance value then directly obtained by judgement is aobvious
Show panel in the range of setting timing reference, determines whether initial gamma voltage computation sheet needs to be adjusted.If judgement electricity
Resistance value is in display panel in the range of setting timing reference, it is determined that initial gamma voltage computation sheet comply with standard do not need into
Row adjusts and determines register value, if judging resistance value not in display panel in the range of setting timing reference, it is determined that initial
Gamma electric voltage computation sheet is not inconsistent standardization needs and is adjusted, then logical obtained resistance value directly calculates initial gamma voltage
Table is adjusted the register value new with determination, directly can quickly calculate the corresponding register value of each grayscale, finally
Gamma burning is carried out to display panel according to determining each grayscale corresponding register value, so as to the gamma-debugged side of simplification
Method improves production efficiency.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (9)
1. a kind of gamma-debugged method of display panel characterized by comprising
The display panel corresponding first register value and display panel when showing most black picture is obtained to show
Corresponding second register value when most white picture；
The initial gamma voltage computation sheet prestored according to the display panel determines first register value corresponding first
Voltage and the corresponding second voltage of second register value；
Detect the electric current of the gamma circuit of the display panel；
Resistance value is calculated according to the voltage difference and the electric current of the second voltage and the first voltage；
The resistance value is determined whether in preset resistance range, wherein the preset resistance range is the display panel
In the range for setting timing reference；
If so, according to the corresponding voltage of each grayscale and the initial gamma voltage of the predetermined display panel
Computation sheet determines the corresponding register value of each grayscale；If it is not, then being calculated according to the resistance value the initial gamma voltage
Table is adjusted, and determines new gamma electric voltage computation sheet；It is corresponding according to each grayscale of the predetermined display panel
Voltage and the new gamma electric voltage computation sheet determine the corresponding register value of each grayscale；
Gamma burning is carried out to the display panel according to determining each grayscale corresponding register value.
2. adjustment method as described in claim 1, which is characterized in that each grayscale of the predetermined display panel is corresponding
Voltage, specifically:
It is most white in display to obtain the display panel corresponding first brightness and display panel when showing most black picture
Corresponding second brightness when picture；
Determine that each grayscale is corresponding according to first brightness, second brightness and the corresponding calculation formula of target gamma curve
Brightness；
The corresponding electricity of each grayscale is determined according to the corresponding brightness of each grayscale and the brightness of the display panel and voltage curve
Pressure.
3. adjustment method as claimed in claim 2, which is characterized in that the target gamma curve is 2.2 curve of gamma.
4. adjustment method as claimed in claim 3, which is characterized in that according to first brightness, second brightness and
The corresponding calculation formula of target gamma curve determines the corresponding brightness of each grayscale, specifically:
According to formula:Determine the corresponding brightness of each grayscale；Wherein, n is big
In or equal to 0 and be less than or equal to the integer of M, M indicates the maximum gray of the display panel, and Lv (0) indicates that described first is bright
Degree, Lv (M) indicate second brightness, and Lv (n) indicates corresponding brightness when grayscale is n.
5. adjustment method according to any one of claims 1-4, which is characterized in that determining the corresponding register value of each grayscale
Later, and before carrying out gamma burning to the display panel according to the determining corresponding register value of each grayscale, further includes:
Whether the determining corresponding register value of each grayscale of detection meets target call；If satisfied, then by determining each grayscale pair
The register value answered is as the corresponding register value of each grayscale finally determined；If not satisfied, then updating newest gamma electric voltage
Computation sheet, and the corresponding register value of each grayscale is redefined according to updated gamma electric voltage computation sheet, and will again
The determining corresponding register value of each grayscale is as the corresponding register value of each grayscale finally determined；
Gamma burning is carried out to the display panel according to determining each grayscale corresponding register value, specifically: according to final
The determining corresponding register value of each grayscale carries out gamma burning to the display panel；
Wherein, detect whether the determining corresponding register value of each grayscale meets target call, specifically:
The display panel is gradually lighted according to the determining corresponding register value of each grayscale, and detects the reality of the display panel
The relationship of each grayscale with corresponding intrinsic brilliance is established in border brightness；
Judge whether each grayscale meets preset gamma curve with the relationship of corresponding intrinsic brilliance；
If meeting, it is determined that the corresponding register value of each grayscale meets target call；
If not meeting, it is determined that the corresponding register value of each grayscale is unsatisfactory for target call.
6. a kind of gamma-debugged device of display panel characterized by comprising control processor, current detector, optics are surveyed
Try device, wherein
The optic test device, for detecting the brightness of the display panel；
The current detector, the electric current of the gamma circuit for detecting the display panel；
The control processor, for detecting display panel acquisition when showing most black picture in the optic test device
Corresponding first register value, and detect the display panel corresponding second register value when showing most white picture；
The initial gamma voltage computation sheet prestored according to the display panel determines the corresponding first voltage of first register value,
And the corresponding second voltage of second register value；According to the voltage difference of the second voltage and the first voltage and
The electric current of the gamma circuit of the display panel of the current detector detection calculates resistance value；Whether determine the resistance value
In preset resistance range, wherein the preset resistance range is the display panel in the range for setting timing reference；If
It is, then according to the corresponding voltage of each grayscale of the predetermined display panel and the initial gamma voltage computational chart
Lattice determine the corresponding register value of each grayscale；If it is not, then according to the resistance value to the initial gamma voltage computation sheet into
Row adjustment, determines new gamma electric voltage computation sheet；Each grayscale according to the predetermined display panel is corresponding
Voltage and the new gamma electric voltage computation sheet determine the corresponding register value of each grayscale: according to determining each grayscale pair
The register value answered carries out gamma burning to the display panel.
7. debugging apparatus as claimed in claim 6, which is characterized in that each grayscale for predefining the display panel is corresponding
The method of voltage is as follows:
The optic test device obtains display panel corresponding first brightness and display when showing most black picture
Panel corresponding second brightness when showing most white picture；
The control processor is according to first brightness, second brightness and the corresponding calculation formula of target gamma curve
Determine the corresponding brightness of each grayscale；It is true according to the corresponding brightness of each grayscale and the brightness of the display panel and voltage curve
Determine the corresponding voltage of each grayscale.
8. debugging apparatus as claimed in claim 7, which is characterized in that the target gamma curve is 2.2 curve of gamma, described
Control processor is used to be determined according to first brightness, second brightness and the corresponding calculation formula of target gamma curve
The corresponding brightness of each grayscale, specifically:
According to formula:Determine the corresponding brightness of each grayscale；Wherein, n is big
In or equal to 0 and be less than or equal to the integer of M, M indicates the maximum gray of the display panel, and Lv (0) indicates that described first is bright
Degree, Lv (M) indicate second brightness, and Lv (n) indicates corresponding brightness when grayscale is n.
9. such as the described in any item debugging apparatus of claim 6-8, which is characterized in that the control processor is also used in determination
After the corresponding register value of each grayscale, and the display panel is being carried out according to determining each grayscale corresponding register value
Before gamma burning, detect whether the determining corresponding register value of each grayscale meets target call；If satisfied, then will be determining
The corresponding register value of each grayscale is as the corresponding register value of each grayscale finally determined；If not satisfied, then updating newest
Gamma electric voltage computation sheet, and the corresponding register value of each grayscale is redefined according to updated gamma electric voltage computation sheet,
And using the corresponding register value of each grayscale redefined as the corresponding register value of each grayscale finally determined；
The control processor is used to carry out gamma burning to the display panel according to the determining corresponding register value of each grayscale
Record, specifically: gamma burning is carried out to the display panel according to the corresponding register value of each grayscale finally determined；
Wherein, the control processor has for detecting whether the determining corresponding register value of each grayscale meets target call
Body are as follows:
The display panel is gradually lighted according to the determining corresponding register value of each grayscale, and detects the reality of the display panel
The relationship of each grayscale with corresponding intrinsic brilliance is established in border brightness；
Judge whether each grayscale meets preset gamma curve with the relationship of corresponding intrinsic brilliance；
If meeting, it is determined that the corresponding register value of each grayscale meets target call；
If not meeting, it is determined that the corresponding register value of each grayscale is unsatisfactory for target call.
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| CN106611583B (en) * | 2017-02-24 | 2020-03-03 | 京东方科技集团股份有限公司 | Gamma voltage debugging method and device for electroluminescent display device |
| CN106920520B (en) * | 2017-04-28 | 2019-02-26 | 京东方科技集团股份有限公司 | Gamma correcting circuit, display driver chip and display device |
| CN108053802A (en) * | 2017-12-20 | 2018-05-18 | 华显光电技术（惠州）有限公司 | The display methods and system of display device |
| CN108665849B (en) * | 2018-05-03 | 2020-04-10 | 武汉精测电子集团股份有限公司 | Method and device based on multi-group gamma regulation and dynamic power supply regulation |
| CN109147707A (en) * | 2018-09-30 | 2019-01-04 | 重庆惠科金渝光电科技有限公司 | Gamma value adjusting method and device of display panel and display equipment |
| WO2021007819A1 (en) * | 2019-07-17 | 2021-01-21 | 深圳市柔宇科技有限公司 | Gamma debugging method and debugging device for display module |
| CN113593474B (en) * | 2021-07-28 | 2023-04-04 | 昆山国显光电有限公司 | Gamma debugging method, display driving chip and display device |
| CN115035851B (en) * | 2022-08-10 | 2022-10-28 | 深圳精智达技术股份有限公司 | Gamma white balance rapid adjustment method and related device |
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| KR20150071549A (en) * | 2013-12-18 | 2015-06-26 | 삼성디스플레이 주식회사 | Display device and display device driving method using the same |
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| CN102324225A (en) * | 2011-09-30 | 2012-01-18 | 友达光电股份有限公司 | Optical compensating system of liquid crystal display |
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