KR20170026909A - Display device and luminance control method thereof - Google Patents

Display device and luminance control method thereof Download PDF

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Publication number
KR20170026909A
KR20170026909A KR1020150122790A KR20150122790A KR20170026909A KR 20170026909 A KR20170026909 A KR 20170026909A KR 1020150122790 A KR1020150122790 A KR 1020150122790A KR 20150122790 A KR20150122790 A KR 20150122790A KR 20170026909 A KR20170026909 A KR 20170026909A
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South Korea
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maximum luminance
luminance
maximum
data
reference voltage
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KR1020150122790A
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Korean (ko)
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이지흔
윤재경
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엘지디스플레이 주식회사
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Publication of KR20170026909A publication Critical patent/KR20170026909A/en

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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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/10—Intensity circuits
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)

Abstract

The present invention relates to a display device capable of improving the picture quality of a moving picture and reducing power consumption and a method of controlling the luminance of the display device by using a PLC A maximum luminance calculator for calculating a first maximum luminance of a previous frame of the pixels and a second maximum luminance of the current frame based on a peak luminance control curve of the first frame and a second maximum luminance by comparing the first and second maximum luminance, And a gamma reference voltage generator for generating a gamma reference voltage including a voltage of the highest gradation corresponding to the third maximum luminance.

Description

[0001] The present invention relates to a display device and a luminance control method thereof,

The present invention relates to a display apparatus and a luminance control method thereof, and more particularly, to a display apparatus and a luminance control method thereof that can prevent deterioration of picture quality of a still picture and reduce power consumption.

[0002] Currently, flat panel display devices such as plasma display panels (PDP), liquid crystal display devices (LCD), and organic light emitting display devices (OLED) have been widely studied and used .

Of the flat panel display devices as described above, the organic light emitting display device is a self-luminous device, and since it does not require a backlight used in a liquid crystal display device, it can be lightweight and thin.

In addition, it has superior viewing angle and contrast ratio compared with liquid crystal display devices, is advantageous in terms of power consumption, can be driven by DC low voltage, has a quick response speed, is resistant to external impacts due to its solid internal components, It has advantages.

Particularly, since the manufacturing process is simple, it is advantageous in that the production cost can be saved more than the conventional liquid crystal display device.

FIG. 1 is a graph showing the relationship between a graph showing a PLC (Peak Luminance Control) curve of a conventional organic light emitting display device and a gamma reference voltage including a maximum gradation voltage corresponding to a maximum luminance adjusted based on a PLC (Peak Luminance Control) FIG. 2 is a graph showing the maximum luminance of pixels according to an average picture level (APL) of an input image of a conventional organic light emitting display device. Referring to FIG.

As shown in the figure, a conventional organic light emitting display device has a PLC (Peak Luminance Control) curve defining the maximum luminance of pixels P according to an average picture level (APL) of image data Data And the power consumption is controlled by adjusting the maximum luminance on the basis.

That is, the conventional organic light emitting display device increases the maximum luminance as the actual display area where the image is outputted among the entire display area of the display panel on which the image is displayed, thereby realizing a display device of high luminance and high picture quality .

For example, when the average image level APL is 100% in FIG. 2 (a), that is, when data in which tone values are R, G, B (255, 255, 255) The first gamma reference voltage VG1 including the voltage of the highest gray level corresponding to the maximum luminance (L) of 100nit is assumed to be 100nit when the maximum luminance of the display region (in this case, the entire display region becomes the actual display region) Is generated.

2 (b), when the average picture level APL is 60%, that is, when the gray scale value of the data is the same as in FIG. 2 (a) 60%, the maximum luminance may be 200 nits higher than 100 nit, and a second gamma reference voltage VG2 including the voltage of the highest gray level corresponding to the maximum luminance (L) 200 nit is generated.

2 (c), when the average image level APL is 25%, that is, when the gray scale value of the data is the same as in FIGS. 2 (a) and 2 (b) When the average image level APL is reduced to 25%, the maximum luminance may be 400 nits higher than 200 nit, and the gamma voltage of the highest gray, which corresponds to the maximum luminance L 400 nit, A third gamma reference voltage G3 is generated.

In this way, even if data having the same gray scale value is input, the conventional display device reduces the actual display area and decreases the average brightness (APL) of all the data output from the entire display area, thereby increasing the maximum brightness So as to prevent deterioration of image quality and to control power consumption.

However, the conventional organic light emitting display device generates a gamma reference voltage including a voltage of the highest gradation corresponding to the maximum luminance adjusted based on a PLC (Peak Luminance Control) curve for a still image, There is a problem that the image quality is lowered.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a display device capable of improving picture quality of a moving picture and reducing power consumption.

According to an aspect of the present invention, there is provided a method of adjusting a luminance of a pixel based on a PLC (Peak Luminance Control) curve defining a maximum luminance of pixels according to an average picture level (APL) A maximum luminance calculation unit for calculating a maximum luminance and a second maximum luminance of the current frame, a comparison unit for calculating a third maximum luminance by comparing the first and second maximum luminance, And a gamma reference voltage generating unit for generating a gamma reference voltage including a voltage of the gamma reference voltage generating unit.

The comparator may further include a look-up table storing a third maximum luminance corresponding to the comparison value of the first and second maximum luminances, and a third maximum luminance lower than the second maximum luminance when the second maximum luminance is lower than the first maximum luminance. And calculates the third maximum luminance higher than the second maximum luminance when the second maximum luminance is higher than the first maximum luminance.

Further, the maximum brightness calculating section includes an APL calculating section for calculating an average picture level (APL) of the image data, and a storing section for storing the first maximum brightness.

At this time, the third maximum luminance is stored in the storage unit at the first maximum luminance of the next frame.

The present invention calculates the adjusted maximum luminance by comparing the maximum luminance of the previous frame and the current frame and outputs the image in accordance with the gamma reference voltage including the voltage of the highest gradation corresponding to the adjusted maximum luminance, The image quality can be improved and the power consumption can be reduced.

FIG. 1 is a graph showing the relationship between a graph showing a PLC (Peak Luminance Control) curve of a conventional organic light emitting display device and a gamma reference voltage including a maximum gradation voltage corresponding to a maximum luminance adjusted based on a PLC (Peak Luminance Control) FIG.
2 is a graph showing the maximum luminance of pixels according to an average picture level (APL) of an input image of a conventional organic light emitting display device.
3 is a view schematically showing a display device according to an embodiment of the present invention.
4 is a block diagram of a luminance controller and a gamma reference voltage generator according to an embodiment of the present invention.
5 is a diagram showing an example of the lookup table of FIG.
6 and 7 are graphs showing a PLC (Peak Luminance Control) curve of an organic light emitting display according to an embodiment of the present invention and a graph showing a peak gradation corresponding to a maximum luminance adjusted based on a PLC (Peak Luminance Control) Lt; RTI ID = 0.0 > voltage. ≪ / RTI >
8 is a graph for explaining effects according to the embodiment of the present invention.
9 is a flowchart of a luminance control method of a display apparatus according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

3 is a view schematically showing a display device according to an embodiment of the present invention.

The display device according to the exemplary embodiment of the present invention includes a display panel 200, a timing controller 300, a luminance controller 100, a gamma reference voltage generator 400, a gate driver 500, (600).

The display panel 200 is provided with a gate wiring GL and a data wiring DL intersecting with each other and a pixel P arranged at an intersection of the gate wiring GL and the data wiring DL is connected to these wirings .

The timing control unit 300 generates a gate control signal GCS for controlling the gate driving unit 500 and a data control signal DCS for controlling the data driving unit 600. The gate control signal GCS and the data control signal DCS thus generated are input to the gate driver 500 and the data driver 600, respectively.

The timing controller 300 supplies the data driver 600 with the image data Data received from the external system in synchronization with the data control signal DCS.

The data driver 600 generates a data voltage corresponding to the input image data Data and outputs the data voltage to the data line DL. The data voltage is supplied to the gamma reference voltage generating unit 400 VG).

For example, the data driver 600 divides the input gamma reference voltage VG and outputs a voltage corresponding to the input image data Data among the divided gamma reference voltages VG as a data voltage.

In this way, the data driver 600 converts the video data of the digital format into a data voltage of an analog format and outputs the data voltage.

The gate driver 500 sequentially outputs scan pulses to the gate line GL in response to a gate control signal GCS supplied from the timing controller 300. [

Accordingly, the data voltage is input to the pixel P connected to the gate line GL through which the scan pulse is inputted through the data line DL.

The luminance controller 100 receives the image data Data from the external system and controls the maximum luminance ML3 for each frame based on the average picture level (APL) of the image data Data.

Meanwhile, the luminance control unit 100 may be incorporated in the timing control unit 300, unlike the drawing.

Hereinafter, the luminance controller 100 and the gamma reference voltage generator 400 of the display apparatus according to the embodiment of the present invention will be described in more detail.

FIG. 4 is a block diagram of a luminance controller and a gamma reference voltage generator according to an exemplary embodiment of the present invention, and FIG. 5 is a diagram illustrating an example of a lookup table of FIG.

The display apparatus according to the embodiment of the present invention includes a luminance controller 100 and a gamma reference voltage generator 150. The luminance controller 100 includes a maximum luminance calculator 110, And a comparison unit 130.

Specifically, the maximum luminance calculation unit 110 calculates a maximum luminance of the pixels P according to the average picture level (APL) of the image data Data input from the external system, The first maximum luminance ML1 of the previous frame of the pixels P and the second maximum luminance ML2 of the current frame, respectively.

For this, the maximum luminance calculation unit 110 includes an APL calculation unit 103 and first and second maximum luminance calculation units 105 and 107. The first maximum luminance calculation unit 105 includes a storage unit 106 ).

Here, the APL calculation unit 103 receives the image data Data from the external system every frame, and calculates an average picture level (APL) of the image data Data.

The first maximum luminance calculating unit 105 calculates a maximum luminance of the pixels P based on a peak luminance control curve that defines the maximum luminance of the pixels P according to the average picture level APL of the image data Data. And the calculated first maximum luminance ML1 is stored in the storage unit 106 included in the first maximum luminance calculation unit 105. The first maximum luminance ML1 is calculated based on the first maximum luminance ML1.

The second maximum brightness calculating unit 107 calculates the maximum brightness of the pixels P according to the average picture level (APL) of the image data Data input from the external system by using a PLC (Peak Luminance Control) And calculates the second maximum luminance ML2 of the current frame of the pixels P based on the curve.

The comparator 130 compares the first and second maximum luminances ML1 and ML2 to calculate the third maximum luminance ML3 according to the image change. The second maximum luminance ML2 of the current frame is (ML3 < ML2), which is lower than the first maximum luminance ML1 (ML2 < ML1) and lower than the second maximum luminance ML2 (ML3 & (ML3 < ML2) higher than the second maximum luminance ML2 when the first maximum luminance ML2 of the previous frame is higher than the first maximum luminance ML1 of the previous frame (ML2 &gt; ML1).

4, the comparator 130 compares the third maximum luminance ML3 corresponding to the comparison values of the first and second maximum luminance ML1 and ML2 with the pre-stored lookup table 133, . &Lt; / RTI &gt;

In this case, the shaded portion on the upper side of the lookup table 133 shown in Fig. 5 represents the first maximum luminance ML1 of the previous frame, and the portion shaded on the left side of the look- And the second maximum luminance ML2.

On the other hand, the third maximum luminance ML3 of the look-up table 133 shown in FIG. 5 can be determined experimentally according to the model specification.

Hereinafter, the process of calculating the third maximum luminance ML3 through the lookup table 133 will be described.

The vertical line including the first maximum luminance ML1 of the lookup table 133 calculated by the first maximum luminance calculating unit 105 and the vertical line including the lookup table 133 calculated by the second maximum luminance calculating unit 107, The luminance at the intersection of the horizontal line including the second maximum luminance ML2 of the first luminance ML2 is calculated as the third maximum luminance ML3.

For example, when the second maximum luminance ML2 of the current frame is 200nit and the first maximum luminance ML1 of the previous frame is 250nit, the third maximum luminance ML3 is 5nit less than the second maximum luminance ML2 195 nit.

When the second maximum luminance ML2 of the current frame is 200nit and the first maximum luminance ML1 of the previous frame is 150nit, the third maximum luminance ML3 is 205nit which is increased by 5nit from the second maximum luminance ML2 .

That is, if the second maximum luminance ML2 of the current frame is lower than the first maximum luminance ML1 of the previous frame (ML2 < ML1), the lookup table 133 reduces the second maximum luminance ML2 by a certain amount, The second maximum luminance ML2 is increased by a certain amount when the second maximum luminance ML2 of the current frame is higher than the first maximum luminance ML1 of the previous frame (ML2 > ML1).

The third maximum luminance ML3 calculated through the lookup table 133 in the comparator 130 is stored in the storage unit 106 of the first maximum brightness calculator 105 and is stored in the first maximum brightness Becomes the luminance ML1.

The gamma reference voltage generator 400 receives the third maximum luminance ML3 and generates a gamma reference voltage VG including a voltage of the highest gradation corresponding to the third maximum luminance ML3.

Specifically, when the second maximum luminance ML2 of the current frame is lower than the first maximum luminance ML1 of the previous frame, the slope of the gamma reference voltage VG curve is lowered and the second maximum luminance of the current frame ML2 is higher than the first maximum luminance ML1 of the previous frame, the slope of the gamma reference voltage (VG) curve is increased.

FIGS. 6 and 7 are graphs showing a peak luminance control (PLC) curve and a peak luminance control (PLC) curve of an organic light emitting display according to an embodiment of the present invention. Lt; RTI ID = 0.0 &gt; voltage. &Lt; / RTI &gt;

5 and 6, when the average picture level APL of the current frame is 60% and the average picture level APL of the previous frame is 50%, that is, when the actual display area of the current frame is The first maximum luminance ML1 of the previous frame may be represented by 250 nits and the third maximum luminance ML3 may be represented by the second maximum luminance ML2 according to the lookup table 133 of Fig. ML2), and a gamma reference voltage VG including a voltage of the highest gradation corresponding to 195 nit, which is the third maximum luminance ML3, is generated.

That is, a gamma reference voltage (VG) curve having a slope smaller than the slope of the gamma reference voltage (VG) curve including the voltage of the highest gradation corresponding to the second maximum luminance (ML2) 200nit is generated.

Next, as shown in FIGS. 5 and 7, when the average picture level APL of the current frame is 60% and the average picture level APL of the previous frame is 70%, that is, when the actual display area of the current frame is The first maximum luminance ML1 of the previous frame may be represented by 150nit and the third maximum luminance ML3 may be represented by the second maximum luminance ML2 according to the lookup table 133 of FIG. ML2), and a gamma reference voltage VG including a voltage of the highest gradation corresponding to 205nit, which is the third maximum luminance ML3, is generated.

That is, a gamma reference voltage (VG) curve having a slope larger than the slope of the gamma reference voltage (VG) curve including the voltage of the highest gradation corresponding to the second maximum luminance (ML2) 200nit is generated.

8 is a graph for explaining effects according to the embodiment of the present invention.

8A, when the second maximum luminance ML2 of the current frame is lower than the first maximum luminance ML1 of the previous frame, the display device according to the embodiment of the present invention may display the second maximum The moving picture quality can be improved by decreasing the luminance ML2 by a certain amount and increasing the second maximum luminance ML2 by a certain amount when the second maximum luminance ML2 of the current frame is higher than the first maximum luminance ML1 of the previous frame have.

8 (b), when the second maximum luminance ML2 of the current frame is lower than the first maximum luminance ML1 of the previous frame, the display device according to the embodiment of the present invention displays the second maximum By reducing the brightness ML2 by a certain amount, power consumption can be reduced.

That is, in the case of FIG. 8 (b), the effect of improving the moving image quality is reduced as compared with FIG. 8 (a), but the power consumption can be reduced.

Hereinafter, a brightness control method of a display apparatus according to an embodiment of the present invention will be described.

9 is a flowchart of a luminance control method of a display apparatus according to an embodiment of the present invention.

As shown in the figure, a luminance control method of a display apparatus according to an embodiment of the present invention includes a step (S100) of calculating first and second maximum luminances, a step (S200) of calculating a third maximum luminance, And generating a gamma reference voltage (S300).

Specifically, the first and second maximum luminance calculations (S100) are performed by defining the maximum luminance of the pixels P according to the average picture level (APL) of the image data Data input from the external system The first maximum luminance ML1 of the previous frame of the pixels P and the second maximum luminance ML2 of the current frame are calculated based on the PLC (Peak Luminance Control) curve.

The calculation of the third maximum luminance (S200) compares the first and second maximum luminances ML1 and ML2 to calculate the third maximum luminance ML3 according to the image change. The second maximum luminance ML3 of the current frame is calculated The third maximum luminance ML3 lower than the second maximum luminance ML2 is calculated when the luminance ML2 is lower than the first maximum luminance ML1 of the previous frame (ML2 < ML1) The third maximum luminance ML3 higher than the second maximum luminance ML2 is calculated when the maximum luminance ML2 is higher than the first maximum luminance ML1 of the previous frame (ML2 > ML1).

At this time, the third maximum luminance ML3 becomes the first maximum luminance ML1 of the next frame.

In addition, the step of generating the gamma reference voltage S300 generates the gamma reference voltage VG including the voltage of the highest gradation corresponding to the third maximum luminance ML3.

Specifically, when the second maximum luminance ML2 of the current frame is lower than the first maximum luminance ML1 of the previous frame, the slope of the gamma reference voltage VG curve is lowered and the second maximum luminance of the current frame ML2 is higher than the first maximum luminance ML1 of the previous frame, the slope of the gamma reference voltage (VG) curve is increased.

In this case, it may be applied only when the slope of the gamma reference voltage (VG) curve is lowered in order to reduce power consumption.

The brightness control method of the display apparatus according to the embodiment of the present invention further includes a step S400 of converting the image data Data into a data voltage according to the gamma reference voltage VG and outputting the data voltage.

Accordingly, when the second maximum luminance ML2 of the current frame is lower than the first maximum luminance ML1 of the previous frame, the method of controlling the luminance of the display apparatus according to the embodiment of the present invention changes the second maximum luminance ML2 by a predetermined amount The power consumption can be reduced.

When the second maximum luminance ML2 of the current frame is lower than the first maximum luminance ML1 of the previous frame, the second maximum luminance ML2 is decreased by a certain amount, The moving picture quality can be improved by increasing the second maximum luminance ML2 by a certain amount when the second maximum luminance ML2 of the frame is high.

The present invention is not limited to the above-described embodiments, and various changes and modifications can be made without departing from the spirit of the present invention.

100: luminance controller
110: maximum luminance calculation unit
130:
400: gamma reference voltage generator

Claims (12)

Based on a PLC (Peak Luminance Control) curve defining the maximum luminance of pixels according to an average picture level (APL) of image data, the first maximum luminance of the previous frame and the second maximum luminance of the current frame are calculated A maximum brightness calculating unit;
A comparator for comparing the first and second maximum luminances to calculate a third maximum luminance; And
A gamma reference voltage generating unit for generating a gamma reference voltage including a voltage of the highest gradation corresponding to the third maximum luminance,
.
The method according to claim 1,
And the comparator includes a lookup table storing the third maximum luminance corresponding to the comparison value of the first and second maximum luminance.
3. The method of claim 2,
And the comparator calculates the third maximum luminance lower than the second maximum luminance when the second maximum luminance is lower than the first maximum luminance.
The method of claim 3,
And the comparator calculates the third maximum luminance higher than the second maximum luminance when the second maximum luminance is higher than the first maximum luminance.
5. The method of claim 4,
The maximum luminance calculator
An APL calculation unit for calculating an average picture level (APL) of the image data; And
The storage unit stores the first maximum luminance.
.
6. The method of claim 5,
And the third maximum luminance is stored in the storage unit at the first maximum luminance of the next frame.
The method according to claim 6,
A display panel including a gate line and a data line intersecting with each other and a pixel disposed at an intersection of the gate line and the data line;
A data driver for converting the image data into a data voltage according to the gamma reference voltage and outputting the data voltage to the data line;
A gate driver for outputting a scan pulse to the gate line; And
A timing controller for controlling the data driver and the gate driver,
Further comprising:
Based on a PLC (Peak Luminance Control) curve defining the maximum luminance of pixels according to an average picture level (APL) of image data, the first maximum luminance of the previous frame and the second maximum luminance of the current frame are calculated ;
Comparing the first and second maximum luminances to calculate a third maximum luminous intensity; And
Generating a gamma reference voltage including a voltage of a highest gradation corresponding to the third maximum luminance
And controlling the luminance of the display device.
9. The method of claim 8,
Wherein the calculating the third maximum luminance comprises:
And calculates the third maximum luminance lower than the second maximum luminance when the second maximum luminance is lower than the first maximum luminance.
10. The method of claim 9,
Wherein the calculating the third maximum luminance comprises:
And when the second maximum luminance is higher than the first maximum luminance, the third maximum luminance higher than the second maximum luminance is calculated.
11. The method of claim 10,
And the third maximum luminance is the first maximum luminance of the next frame.
12. The method of claim 11,
Converting the image data into a data voltage according to the gamma reference voltage and outputting the data voltage
Wherein the brightness control method further comprises:
KR1020150122790A 2015-08-31 2015-08-31 Display device and luminance control method thereof KR20170026909A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108492772A (en) * 2018-03-30 2018-09-04 京东方科技集团股份有限公司 A kind of Gamma adjusting methods and Gamma regulating systems
CN108962126A (en) * 2018-09-29 2018-12-07 武汉天马微电子有限公司 A kind of displaying panel driving method, drive system and the display device comprising it
CN109427300A (en) * 2017-08-23 2019-03-05 乐金显示有限公司 Luminance compensation system and its luminance compensation method
KR20200032585A (en) * 2018-09-18 2020-03-26 엘지전자 주식회사 Image display apparatus
WO2021040447A1 (en) * 2019-08-29 2021-03-04 Lg Electronics Inc. Image display apparatus
CN115206224A (en) * 2022-07-25 2022-10-18 武汉天马微电子有限公司 Brightness adjusting method, device, equipment, medium, display panel and display device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109427300A (en) * 2017-08-23 2019-03-05 乐金显示有限公司 Luminance compensation system and its luminance compensation method
CN109427300B (en) * 2017-08-23 2021-08-24 乐金显示有限公司 Brightness compensation system and brightness compensation method thereof
CN108492772A (en) * 2018-03-30 2018-09-04 京东方科技集团股份有限公司 A kind of Gamma adjusting methods and Gamma regulating systems
KR20200032585A (en) * 2018-09-18 2020-03-26 엘지전자 주식회사 Image display apparatus
CN108962126A (en) * 2018-09-29 2018-12-07 武汉天马微电子有限公司 A kind of displaying panel driving method, drive system and the display device comprising it
CN108962126B (en) * 2018-09-29 2021-11-19 武汉天马微电子有限公司 Display panel driving method and system and display device comprising same
WO2021040447A1 (en) * 2019-08-29 2021-03-04 Lg Electronics Inc. Image display apparatus
US11151935B2 (en) 2019-08-29 2021-10-19 Lg Electronics Inc. Image display device
CN115206224A (en) * 2022-07-25 2022-10-18 武汉天马微电子有限公司 Brightness adjusting method, device, equipment, medium, display panel and display device

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