CN110534063A - The backlight method of adjustment and display device of local dimming - Google Patents
The backlight method of adjustment and display device of local dimming Download PDFInfo
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- CN110534063A CN110534063A CN201810501977.XA CN201810501977A CN110534063A CN 110534063 A CN110534063 A CN 110534063A CN 201810501977 A CN201810501977 A CN 201810501977A CN 110534063 A CN110534063 A CN 110534063A
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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
- G09G3/3406—Control of illumination source
- G09G3/3413—Details of control of colour illumination sources
-
- 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
- G09G3/3406—Control of illumination source
- G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
-
- 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
Abstract
The present invention proposes the backlight method of adjustment and display device of a kind of local dimming.The backlight method of adjustment is suitable for display device, this display device includes display panel and backlight module, and backlight module includes multiple luminescence units.Backlight method of adjustment includes: acquirement image, and image is divided into multiple blocks, these blocks are respectively corresponding to above-mentioned luminescence unit；For each luminescence unit, a luminous intensity is calculated according to the brightness value of pixel in corresponding block；And for each block, judge whether brightness value is greater than a number critical value greater than the number of the pixel of a brightness critical values, if then setting luminous intensity corresponding to block more than or equal to the first critical strength.
Description
Technical field
The present invention relates to a kind of backlight methods of adjustment, and in particular to a kind of for local dimming (local
Dimming backlight method of adjustment and display device).
Background technique
In general, liquid crystal display device all includes backlight module, and traditional backlight module mostly uses fixed backlight
(Constant backlight), and in order to increase its comparison, it is necessary to using area dims (Local Dimming) technology,
The backlight illumination of specific part is regionally adjusted according to the potassium ion distribution of image brilliance.For example, when brighter in display image
Region when, backlight can export high brightness；When showing region darker in image, then weaken the output brightness of backlight.Whereby,
Display dynamic contrast with higher and lower consumption power with local dimming control.However, when using region tune
Light time, some images with special pattern (pattern) have not expected effect, it is therefore desirable to detect these patterns and make
Corresponding processing.
Summary of the invention
The embodiment of the present invention proposes a kind of backlight method of adjustment of local dimming, and it is suitable for display devices, this is aobvious
Showing device includes display panel and backlight module, and backlight module includes multiple luminescence units.Backlight method of adjustment includes: to obtain
Image, and image is divided into multiple blocks, wherein image includes multiple pixels, these blocks are respectively corresponding to luminescence unit；It is right
In each luminescence unit, a luminous intensity is calculated according to the brightness value of pixel in corresponding block；And for each block,
Judge whether brightness value is greater than a number critical value greater than the number of the pixel of a brightness critical values, if it is right then to set block institute
The luminous intensity answered is more than or equal to the first critical strength.
In some embodiments, luminous intensity corresponding to block is set to wrap more than or equal to the step of the first critical strength
It includes: judging luminous intensity whether less than the first critical strength, if then setting luminous intensity as the first critical strength, if not
Then maintain luminous intensity constant.
In some embodiments, luminous intensity corresponding to block is set to wrap more than or equal to the step of the first critical strength
It includes: judging luminous intensity whether less than the second critical strength, if then increasing luminous intensity with nonlinear function, if otherwise
Maintain luminous intensity constant.
In some embodiments, the minimum value of the codomain of above-mentioned nonlinear function is more than or equal to the first critical strength, and
And first critical strength less than the second critical strength.
In some embodiments, include: according to the step of brightness value of the pixel in corresponding block calculating luminous intensity
Luminous intensity is calculated according to the average value of the brightness value of pixel in corresponding block.
For another angle, the embodiment of the present invention proposes a kind of display device, including display panel, backlight mould
Block and logic circuit.Backlight module includes multiple luminescence units.Image is divided into multiple by logic circuit to obtain an image
Block, wherein image includes multiple pixels, these blocks are respectively corresponding to luminescence unit.For each luminescence unit, logic
Circuit calculates luminous intensity according to the brightness value of pixel in corresponding block.For each block, logic circuit judges brightness
Whether the number that value is greater than the pixel of a brightness critical values is greater than number critical value, if then setting strong light corresponding to block
Degree is more than or equal to the first critical strength.
In some embodiments, logic circuit judges luminous intensity whether less than the first critical strength, if then setting
Luminous intensity is the first critical strength, if otherwise maintaining luminous intensity constant.
In some embodiments, logic circuit judges luminous intensity whether less than the second critical strength, if then with one
Nonlinear function increases luminous intensity, if otherwise maintaining luminous intensity constant.
In some embodiments, the minimum value of the codomain of above-mentioned nonlinear function is more than or equal to the first critical strength, and
And first critical strength less than the second critical strength.
In some embodiments, logic circuit calculates strong light according to the average value of the brightness value of pixel in corresponding block
Degree.
In the method and display device that the embodiment of the present invention proposes, it can detecte out special pattern and luminous intensity done
Adjustment, promotes the quality of display whereby.
Detailed description of the invention
To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and it is detailed to cooperate attached drawing to make
Carefully it is described as follows.
Fig. 1 is to implement to exemplify the schematic diagram of display device according to one.
Fig. 2 is to exemplify the image schematic diagram with special pattern according to some implementations.
Fig. 3 is to implement to exemplify the flow diagram of local dimming mechanism according to one.
Fig. 4 and Fig. 5 is to implement to exemplify the transfer function of luminous intensity according to one.
Fig. 6 is to implement to exemplify the backlight method of adjustment of local dimming according to one.
Description of symbols:
100: display device
110: display panel
120: backlight module
130: logic circuit
121~128: luminescence unit
201,202: image
301~308: block
311,312: bright spot
320: image after compensation
330: image
T1, T2: critical strength
510: curve
601~607: step
Specific embodiment
About " first " used herein, " second " ... etc., not refer in particular to the meaning of order or cis-position,
Only for distinguishing with the element of same technique term description or operation.
Fig. 1 is to implement to exemplify the schematic diagram of display device according to one.Please refer to Fig. 1, display device 100 can for screen or
Any electronic device comprising screen, for example, smart phone, tablet computer, notebook computer etc..Display device 100 includes
Display panel 110, backlight module 120 and logic circuit 130.
Display panel 110 can be any suitable liquid crystal display panel, and for example, fringing field switches (fringe field
Switching, FFS), coplanar switching (in-plane switching, IPS) mode, stable twisted nematic (twisted
Nematic, TN), the display panels such as vertical orientation (vertical alignment, VA).
Backlight module 120 includes multiple luminescence units 121~128, these luminescence units are, for example, light emitting diode
(light emitting diode, LED), through the brightness for controlling these light emitting diodes, it is possible to implement local dimming
The mechanism of (local dimming).However, the number of luminescence unit 121~128 and set position are only example in Fig. 1,
Backlight module 120 can have more or less a luminescence units in other embodiments, and these luminescence units can have it
His setting position.Light emitting module 120 is straight-down negative (Direct-lit) light emitting module in Fig. 1, but in other embodiments
It may be side-light type (edge-lit) light emitting module, as long as there are multiple luminescence units to provide varying strength in different zones
Light source, within the scope of this specification.
Logic circuit 130 provides image to obtain image, and to after some image processing programs of this image execution
It is shown to display panel 110.Logic circuit 130 also can control the luminous intensity of each luminescence unit 121~128.Logic
Circuit 130 is, for example, sequence controller (timing controller), but in other embodiments may be display device
Arbitrary chip or circuit in 100.Backlight method of adjustment described below is executed by logic circuit 130, below and no longer
It repeats.
Fig. 2 is to exemplify the image schematic diagram with special pattern according to some implementations.Shown in Fig. 2 image 201,
202, the striped or point for all having brightness very big in these images, while the brightness of background is very low.In traditional local dimming mechanism
Under, these stripeds or point are possible to become not see Chu or invisible because the luminous intensity of luminescence unit is dimmed.Tool
For body, Fig. 3 is to implement to exemplify the flow diagram of local dimming mechanism according to one.In Fig. 3 by taking image 202 as an example, in order to
For the sake of conveniently showing, the bright spot 311,312 in Fig. 3 is shown as black, and background is white, it will be appreciated that in Fig. 3
Image 202 and Fig. 2 in image 202 be identical.In this embodiment image 202 be chromatic image, for example including it is red,
Three channels such as green, blue, in other words, each pixel include corresponding three grayscale values to red green, blue.Below can
The brightness value (luminance) of each pixel is calculated, this brightness value is red, green, blue three ashes in some embodiments
Maximum value in rank value, but can also convert these three grayscale values to another color space in some embodiments, and take
Obtain brightness value therein, such as the intensity (intensity) in HIS color space or the brightness value in YCbCr color space
Y.However, the brightness value in arbitrary hue space should can be used in those of ordinary skill in the art, the present invention is simultaneously not subject to the limits.
After obtaining image 202, image 202 can be divided for multiple blocks 301~308,301~308 points of these blocks
It Dui Ying not be to the luminescence unit 121~128 in light emitting module 120.It can be according to corresponding area for each luminescence unit
The brightness value of pixel calculates a luminous intensity in block.For example, for luminescence unit 122, area can be calculated
The average value and histogram of the brightness value of all pixels in domain 302, calculate further according to this average value with histogram luminous
Intensity.In general, the average value of brightness value is directly proportional to luminous intensity, therefore in some embodiments can only zoning
The average value of brightness value in 302, and this average value is done into linear mapping to obtain luminous intensity.In some embodiments, grey
Rank value and brightness value are 8 bits, and luminous intensity is 12 bits, but the present invention and not subject to the limits.In addition to above-mentioned calculation method, In
Can also be using any algorithm for calculating luminous intensity in other embodiments, the present invention is not limited to the above embodiments.Value
It is noted that due to pixel in region 301,308 average brightness very little, the strong light of luminescence unit 121,128
Degree also can very little.
After calculating luminous intensity, image 320 after image 202 can be compensated and compensated.For example, due to
The luminous intensity of luminescence unit 122 is weaker (lower than without the luminous intensity under local dimming mechanism), therefore in region 302
Pixel can increase its brightness value, and so on.However, the present invention does not also limit how to generate image 320 after compensating.
Finally, image 320 can be sent to display panel 110 after compensation, the light source that collocation light emitting module 120 issues is being regarded
Image 330 can be presented on feeling.As described above, due to the luminous intensity very little of luminescence unit 121,128, in image 330
In not can be appreciated that bright spot 311,312 (or become very dark and do not see Chu).In this embodiment, judging in image 202 is
It is no to have these special patterns, luminous intensity is adjusted whereby.
Specifically, for each block 301~308, it can determine whether to have in block the brightness value of several pixels to be greater than one
A brightness critical values, and judge whether the number of these pixels is greater than a number critical value.This brightness critical values is, for example, 200,
And number critical value can be adjusted according to the size of block, the present invention is not intended to limit the number of brightness critical values Yu number critical value
Value.If the number that brightness value is greater than the pixel of brightness critical values is greater than number critical value, it can moderately increase corresponding shine
Otherwise the luminous intensity of unit maintains luminous intensity constant.In the fig. 3 embodiment, the luminous intensity of luminescence unit 121,128
It can be increased, and the luminous intensity of other luminescence units then remains unchanged.
In some embodiments, it even if meeting above-mentioned judgement, but if corresponding luminous intensity is not low, is then not required to
It is further added by luminous intensity.Specifically, after some block meets the above-mentioned judgement about brightness value, can judge to correspond to again
Luminescence unit luminous intensity whether less than one the first critical strength, if then setting this luminous intensity as the first intensity
Critical value, if otherwise maintaining luminous intensity constant.This adjustment can refer to Fig. 4, and horizontal axis is luminous intensity before adjusting, and the longitudinal axis is adjustment
Luminous intensity afterwards, as can be seen from Figure 4 be that luminous intensity adjusted can all be greater than the first critical strength T1.In other realities
It applies in example, after some block meets the above-mentioned judgement about brightness value, can judge again whether corresponding luminous intensity is less than
One the second critical strength, if then increasing luminous intensity with nonlinear function, if otherwise maintaining luminous intensity constant.This
Adjustment can refer to Fig. 5, and the luminous intensity before adjustment is less than the second critical strength T2When, it is (corresponding to song with nonlinear function
Line 510) Lai Zengjia luminous intensity, this nonlinear function can be exponential function or polynomial function, the present invention is not limited to
This.In some embodiments, it is also possible to which the minimum value for setting the codomain (range) of this nonlinear function is more than or equal to the first intensity
Critical value T1, in this way, which luminous intensity adjusted can be more than or equal to the first critical strength T1.It is worth noting that, first
Critical strength T1Less than the second critical strength T2, but the present invention is not intended to limit the two critical values are how many.It is done according to above-mentioned
Method can detecte out the special pattern in Fig. 2 and increase luminous intensity, whereby on a display panel it can be seen that these bright spots
With bright fringes.
Fig. 6 is to implement to exemplify the backlight method of adjustment of local dimming according to one.Fig. 6 is please referred to, in step 601,
Image is obtained, and image is divided into multiple blocks, the corresponding multiple luminescence units into backlight module of these blocks.In step
In 602, for each of backlight module luminescence unit, a strong light is calculated according to the brightness value of pixel in corresponding block
Degree.In step 603, judge whether the number for the pixel that brightness value is greater than a brightness critical values in a block is greater than a number and faces
Dividing value.If the result of step 603 be it is no, maintain corresponding luminous intensity constant in step 604.If the result of step 603 is
It is that can set the corresponding luminous intensity of this block in step 607 can be more than or equal to the first critical strength.For example, in step
In rapid 605, the corresponding luminous intensity of this block can be judged whether less than the first critical strength again.If the result of step 605 is
It is no, equally execute step 604.If the result of step 605 be it is yes, in step 606, luminous intensity is set as the first intensity and is faced
Dividing value.In the embodiment in fig 6, step 607 is with the transformation curve of Fig. 4 to implement, but step 607 can also in other embodiments
To be implemented with the transformation curve of Fig. 5.Each step has been described in detail as above in Fig. 6, just repeats no more herein.It is noticeable
It is that each step may be embodied as multiple program codes or circuit in Fig. 6, and the present invention is not limited thereto.In addition, the method for Fig. 6 can
To arrange in pairs or groups, above embodiments are used, and also can be used alone.In other words, other steps can also be added between each step of Fig. 6
Suddenly.
Although the present invention is disclosed as above with embodiment, above-described embodiment is not intended to limit the invention, Ren Hesuo
Belong to those of ordinary skill in technical field, without departing from the spirit and scope of the present invention, should can make certain change and repair
Change, therefore protection scope of the present invention should be subject to appended claims range institute defender.
Claims (10)
1. a kind of backlight method of adjustment of local dimming, is suitable for a display device, which includes a display panel
With a backlight module, which includes multiple luminescence units, which includes:
An image is obtained, and the image is divided into multiple blocks, wherein the image includes multiple pixels, and multiple block is right respectively
It should be to multiple luminescence unit；
For each of multiple luminescence unit, one is calculated according to the brightness value of multiple pixel in the corresponding block
Luminous intensity；And
For each of multiple block, judge brightness value be greater than multiple pixel of a brightness critical values number whether
Greater than a number critical value, if then setting the luminous intensity corresponding to the block more than or equal to one first critical strength.
2. backlight method of adjustment as described in claim 1, it is greater than etc. wherein setting the luminous intensity corresponding to the block
Include: in the step of first critical strength
Judge whether the luminous intensity is less than first critical strength, faces if then setting the luminous intensity as first intensity
Dividing value, if otherwise maintaining the luminous intensity constant.
3. backlight method of adjustment as described in claim 1, it is greater than etc. wherein setting the luminous intensity corresponding to the block
Include: in the step of first critical strength
The luminous intensity is judged whether less than one second critical strength, if then increasing the strong light with a nonlinear function
Degree, if otherwise maintaining the luminous intensity constant.
4. backlight method of adjustment as claimed in claim 3, wherein the minimum value of the codomain of the nonlinear function is more than or equal to
First critical strength, and first critical strength is less than second critical strength.
5. backlight method of adjustment as described in claim 1, wherein according to the bright of multiple pixel in the corresponding block
Angle value calculates the step of luminous intensity and includes:
The luminous intensity is calculated according to the average value of the brightness value of multiple pixel in the corresponding block.
6. a kind of display device, comprising:
One display panel；
One backlight module, including multiple luminescence units；And
One logic circuit is divided into multiple blocks to obtain an image, and by the image, and wherein the image includes multiple pixels,
Multiple block is respectively corresponding to multiple luminescence unit,
For each of multiple luminescence unit, the logic circuit is bright according to multiple pixel in the corresponding block
Angle value calculates a luminous intensity,
For each of multiple block, which judges that brightness value is greater than multiple pixel of a brightness critical values
Number whether be greater than a number critical value, if then setting the luminous intensity corresponding to the block more than or equal to the last the first
Spend critical value.
7. display device as claimed in claim 6, wherein the logic circuit judges whether the luminous intensity is less than the last the first
Critical value is spent, if then setting the luminous intensity as first critical strength, if otherwise maintaining the luminous intensity constant.
8. display device as claimed in claim 6, wherein whether the logic circuit judges the luminous intensity less than the last the second
Critical value is spent, if then increasing the luminous intensity with a nonlinear function, if otherwise maintain the luminous intensity constant.
9. display device as claimed in claim 8, wherein the minimum value of the codomain of the nonlinear function be more than or equal to this first
Critical strength, and first critical strength is less than second critical strength.
10. display device as claimed in claim 6, wherein the logic circuit is according to multiple pixel in the corresponding block
The average value of the brightness value calculate the luminous intensity.
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| CN201810501977.XA CN110534063B (en) | 2018-05-23 | 2018-05-23 | Backlight source adjusting method for regional dimming and display device |
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| CN201810501977.XA CN110534063B (en) | 2018-05-23 | 2018-05-23 | Backlight source adjusting method for regional dimming and display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113870798A (en) * | 2021-07-19 | 2021-12-31 | 义隆电子股份有限公司 | Control method applied to display |
| CN116068455A (en) * | 2023-01-28 | 2023-05-05 | 宝邑(深圳)照明科技有限公司 | Lamp life prediction method, system, electronic equipment and medium |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101170642A (en) * | 2006-10-26 | 2008-04-30 | 深圳Tcl工业研究院有限公司 | A dynamically video image processing method and method for identifying video image gray distribution |
| CN101211537A (en) * | 2006-12-31 | 2008-07-02 | 深圳Tcl工业研究院有限公司 | LCD television set backlight control system and method |
| CN101281733A (en) * | 2008-03-26 | 2008-10-08 | 青岛海信电器股份有限公司 | Liquid crystal display method |
| CN101593508A (en) * | 2008-05-19 | 2009-12-02 | 三星电子株式会社 | Based on histogrammic dynamic backlight control system and method |
| CN104766569A (en) * | 2015-04-29 | 2015-07-08 | 深圳市华星光电技术有限公司 | Screen dynamic backlight adjusting method |
| CN105047140A (en) * | 2015-07-06 | 2015-11-11 | 西安交通大学 | Self-adapting dynamic backlight control system and method based on image content |
| CN105513546A (en) * | 2016-03-02 | 2016-04-20 | 京东方科技集团股份有限公司 | Backlight adjustment method and device and display device |
| CN106023905A (en) * | 2016-05-27 | 2016-10-12 | 京东方科技集团股份有限公司 | Method for controlling display equipment, control device of display equipment and display equipment |
| CN107507580A (en) * | 2017-09-06 | 2017-12-22 | 天津大学 | Local dimming method applied to Novel backlight |
| CN107909970A (en) * | 2017-12-29 | 2018-04-13 | 晨星半导体股份有限公司 | Display device and its corresponding local dimming driving method |
-
2018
- 2018-05-23 CN CN201810501977.XA patent/CN110534063B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101170642A (en) * | 2006-10-26 | 2008-04-30 | 深圳Tcl工业研究院有限公司 | A dynamically video image processing method and method for identifying video image gray distribution |
| CN101211537A (en) * | 2006-12-31 | 2008-07-02 | 深圳Tcl工业研究院有限公司 | LCD television set backlight control system and method |
| CN101281733A (en) * | 2008-03-26 | 2008-10-08 | 青岛海信电器股份有限公司 | Liquid crystal display method |
| CN101593508A (en) * | 2008-05-19 | 2009-12-02 | 三星电子株式会社 | Based on histogrammic dynamic backlight control system and method |
| CN104766569A (en) * | 2015-04-29 | 2015-07-08 | 深圳市华星光电技术有限公司 | Screen dynamic backlight adjusting method |
| CN105047140A (en) * | 2015-07-06 | 2015-11-11 | 西安交通大学 | Self-adapting dynamic backlight control system and method based on image content |
| CN105513546A (en) * | 2016-03-02 | 2016-04-20 | 京东方科技集团股份有限公司 | Backlight adjustment method and device and display device |
| CN106023905A (en) * | 2016-05-27 | 2016-10-12 | 京东方科技集团股份有限公司 | Method for controlling display equipment, control device of display equipment and display equipment |
| CN107507580A (en) * | 2017-09-06 | 2017-12-22 | 天津大学 | Local dimming method applied to Novel backlight |
| CN107909970A (en) * | 2017-12-29 | 2018-04-13 | 晨星半导体股份有限公司 | Display device and its corresponding local dimming driving method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113870798A (en) * | 2021-07-19 | 2021-12-31 | 义隆电子股份有限公司 | Control method applied to display |
| CN113870798B (en) * | 2021-07-19 | 2023-08-08 | 义隆电子股份有限公司 | Control method applied to display |
| CN116068455A (en) * | 2023-01-28 | 2023-05-05 | 宝邑(深圳)照明科技有限公司 | Lamp life prediction method, system, electronic equipment and medium |
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| Publication number | Publication date |
|---|---|
| CN110534063B (en) | 2021-01-22 |
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