CN109637459A - A kind of backlight back light brightness regulating method - Google Patents
A kind of backlight back light brightness regulating method Download PDFInfo
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- CN109637459A CN109637459A CN201811416789.3A CN201811416789A CN109637459A CN 109637459 A CN109637459 A CN 109637459A CN 201811416789 A CN201811416789 A CN 201811416789A CN 109637459 A CN109637459 A CN 109637459A
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- lamp plate
- backlight
- periphery
- current value
- brightness
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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
- G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
- G09G3/3426—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines the different display panel areas being distributed in two dimensions, e.g. matrix
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Planar Illumination Modules (AREA)
Abstract
The embodiment of the invention discloses a kind of backlight back light brightness regulating methods, backlight includes multiple lamp plates, each lamp plate adjusts its backlight illumination by individually controlling current value, and the backlight illumination of each lamp plate can be learned, it is characterized in that, the following steps are included: according to the region division model split of M × N being several backlight areas by the lamp plate of the backlight, wherein M is integer more than or equal to 2, and N is the integer more than or equal to 1；For each backlight area using a lamp plate in the region as benchmark lamp plate, other lamp plates are periphery lamp plate；According to the backlight illumination of benchmark lamp plate, brightness uniformity adjustment is carried out to periphery lamp plate.By the way that backlight is divided into multiple backlight areas, each backlight area includes multiple lamp plates, by adjusting the backlight illumination of each lamp plate of the backlight area of all divisions, making different lamp plates, brightness is more uniform after ignition, it is bright dark uniform in shady face to make the backlight, effectively solve the problems, such as brightness disproportionation.
Description
Technical field
The present invention relates to technical field of liquid crystal display more particularly to a kind of backlight back light brightness regulating methods.
Background technique
Mini-LED also known as time millimeter light emitting diode or area source are chip size in 200um or less chip product,
It is had an optimistic view of as next-generation display technology by all multiple enterprises in LED industry chain.It has flexible, low-power consumption, high brightness, height
The many advantages such as dynamic contrast and narrow frame, the favor by most manufacturers.
Mini-LED is used for LCD display backlight light source by the prior art, because its can realize it is ultra-thin, multizone simultaneously again be benefit
With small-size chips product, can match in excellence or beauty OLED product on real effect, and can more have compared with OLED again in material cost
Competitive advantage and be suggested use.
It is limited to present piece board, Mini-LED product is lamp plate of the piece at small pieces, then small pieces lamp plate is spliced
At large scale backlight.The lamp plate quantity as used in Mini-LED backlight is more, Mini-LED brightness bin (two used in different lamp plates
System) and voltage bin cannot be guaranteed crash consistency so that there is luminance difference in different lamp plate, to make to carry on the back after ignition
Brightness unevenness in smooth surface.
Summary of the invention
The purpose of the present invention is overcoming defect of the existing technology, a kind of backlight back light brightness regulating method is provided,
Brightness is more uniform after ignition for the different lamp plates for making in the backlight, thus make in shady face it is bright it is dark uniformly.
To achieve the goals above, present invention employs the following technical solutions:
In one embodiment of the invention, a kind of backlight back light brightness regulating method is provided, wherein the backlight includes
Multiple lamp plates, each lamp plate adjust its backlight illumination, and the backlight of each lamp plate by individually controlling current value
Brightness can be learned comprising following steps:
By the lamp plate of the backlight according to M × N region division model split be several backlight areas, wherein M is big
In or equal to 2 integer, N is integer more than or equal to 1.
For each backlight area using a lamp plate in the region as benchmark lamp plate, other lamp plates are periphery lamp plate；According to institute
The backlight illumination for stating benchmark lamp plate carries out brightness uniformity adjustment to the periphery lamp plate.
Further, wherein the mode of brightness uniformity adjustment is the relation curve according to electric current and brightness, adjustment
The electric current of the periphery lamp plate makes it be equal to the electric current of the benchmark lamp plate.
Further, wherein in the electric current and the relation curve of brightness electric current and brightness be positively correlated distribution.
Further, wherein the mode of the adjustment periphery lamp plate electric current are as follows:
According to the relation curve of the backlight illumination and electric current and brightness of the benchmark lamp plate and the periphery lamp plate, calculate
The gain back facet current value of the periphery lamp plate；
Driving signal is generated with the gain back facet current value of the periphery lamp plate, and then institute is adjusted by the driving signal
State the backlight illumination of periphery lamp plate.
Further, wherein the gain back facet current value for calculating the periphery lamp plate, specifically includes: in the electric current
On the relation curve of brightness, corresponding first current value of backlight illumination of the periphery lamp plate is searched, the benchmark lamp is searched
Corresponding second current value of the backlight illumination of plate calculates the difference of first current value and second current value.
Further, wherein the driving signal includes: the step of adjusting the backlight illumination of the periphery lamp plate
According to the backlight illumination of the periphery lamp plate, confirm the backlight illumination of the periphery lamp plate relative to the benchmark lamp
The relative value of the backlight illumination of plate；
The size of the relative value Yu 1 is compared, if the relative value is equal to 1, the periphery lamp plate current value is not adjusted；
If the relative value is greater than 1, the periphery lamp plate current value subtracts the gain back facet current value；If the relative value is less than
1, then the periphery lamp plate current value adds the gain back facet current value.
Further, wherein the relative value is R=Lv1/Lv2, wherein Lv1For the backlight illumination of the periphery lamp plate,
Lv2For the backlight illumination of the benchmark lamp plate.
Further, wherein the M is 3, the N is 3；The benchmark lamp plate is the center lamp plate in the region.
Further, wherein the backlight illumination detection mode of each lamp plate are as follows: in the upper installation one of the backlight
A sensor, the brightness where knowing it by sensor detection in lamp plate face.
Further, wherein the backlight illumination detection mode of each lamp plate are as follows: measured with optical measuring equipment each
Luminance Distribution in the lamp plate face of the lamp plate.
It is in contrast to the prior art, the present invention provides a kind of backlight back light brightness regulating methods, by backlight
Plate is divided into multiple backlight areas, and each backlight area includes multiple lamp plates, by adjusting all divisions backlight area it is each
The backlight illumination of lamp plate, making different lamp plates, brightness is more uniform after ignition, to make bright in the shady face of the backlight
It is dark uniform, effectively solve the problems, such as brightness disproportionation.
Detailed description of the invention
Fig. 1 is a kind of backlight back light brightness regulating method flow chart of one embodiment of the present invention；
Fig. 2 is each backlight area in a kind of backlight back light brightness regulating method of one embodiment of the present invention
Structural schematic diagram；
Fig. 3 is each back of adjustment in a kind of backlight back light brightness regulating method of one embodiment of the present invention
The flow chart of the periphery lamp plate electric current in light region；
Fig. 4 is the driving signal control week in a kind of backlight back light brightness regulating method of one embodiment of the present invention
The flow chart of the backlight illumination of cowl lamp plate；
Fig. 5 is the pass of the electric current and brightness in a kind of backlight back light brightness regulating method of one embodiment of the present invention
It is curve I-Lv curve synoptic diagram.
Wherein: 1 backlight area, 2 benchmark lamp plates, 3 periphery lamp plates.
Specific embodiment
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
It please refers to shown in Fig. 1, Fig. 2, in one embodiment of the invention, provides a kind of backlight back light brightness regulating method,
Wherein the backlight includes multiple lamp plates, and each lamp plate adjusts its backlight illumination by individually controlling current value, and
The backlight illumination of each lamp plate can be learned comprising following steps:
It step S1, is several backlight areas 1 according to the region division model split of M × N by the lamp plate of the backlight,
Middle M is the integer more than or equal to 2, and N is the integer more than or equal to 1；
Step S2, for each backlight area 1 using a lamp plate in the region as benchmark lamp plate 2, other lamp plates are surround light
Plate 3；According to the backlight illumination of the benchmark lamp plate 2, brightness uniformity adjustment is carried out to the periphery lamp plate 3.
It please refers to shown in Fig. 2, the preferred M=3 of several backlight areas 1 and N=3；The benchmark lamp plate 2 is the region
Center lamp plate.
Wherein the mode of the brightness uniformity adjustment is the relation curve according to electric current and brightness, adjusts the surround light
The electric current of plate 3 makes it be equal to the electric current of the benchmark lamp plate 2.
It please refers to shown in Fig. 5, wherein electric current and brightness are positively correlated distribution in the electric current and the relation curve of brightness.
It please refers to shown in Fig. 3, wherein the mode of adjustment 3 electric current of periphery lamp plate are as follows:
According to the relation curve of the backlight illumination and electric current and brightness of the benchmark lamp plate 2 and the periphery lamp plate 3, meter
Calculate the gain back facet current value of the periphery lamp plate 3；
Driving signal is generated with the gain back facet current value of the periphery lamp plate 3, and then is adjusted by the driving signal
The backlight illumination of the periphery lamp plate 3.
The wherein gain back facet current value for calculating the periphery lamp plate 3, specifically includes: in the electric current and brightness
On relation curve, corresponding first current value of backlight illumination of the periphery lamp plate 3 is searched, the back of the benchmark lamp plate 2 is searched
Corresponding second current value of brightness calculates the difference of first current value and second current value.
It please refers to shown in Fig. 4, wherein the driving signal includes: the step of adjusting the backlight illumination of the periphery lamp plate 3
According to the backlight illumination of the periphery lamp plate 3, confirm the backlight illumination of the periphery lamp plate 3 relative to the benchmark
The relative value of the backlight illumination of lamp plate 2；
The size of the relative value Yu 1 is compared, if the relative value is equal to 1,3 current value of periphery lamp plate is uncomfortable
It is whole；If the relative value is greater than 1,3 current value of periphery lamp plate subtracts the gain back facet current value；If the relative value
Less than 1, then 3 current value of periphery lamp plate adds the gain back facet current value.
It please refers to shown in Fig. 5, wherein the relative value is R=Lv1/Lv2, wherein Lv1For the backlight of the periphery lamp plate 3
Brightness, Lv2For the backlight illumination of the benchmark lamp plate 2.
The wherein backlight illumination detection mode of each lamp plate are as follows: in one sensor of upper installation of the backlight
(not shown), the brightness where knowing it by sensor detection in lamp plate face.
The wherein backlight illumination detection mode of each lamp plate are as follows: measure each lamp plate with optical measuring equipment
Luminance Distribution in lamp plate face.
It is in contrast to the prior art, the present invention provides a kind of backlight back light brightness regulating methods, by backlight
Plate is divided into multiple backlight areas, and each backlight area includes multiple lamp plates, by adjusting all divisions backlight area it is each
The backlight illumination of lamp plate, making different lamp plates, brightness is more uniform after ignition, to make bright in the shady face of the backlight
It is dark uniform, effectively solve the problems, such as brightness disproportionation.
It is in contrast to the prior art, the present invention will own by providing a kind of backlight back light brightness regulating method
After the backlight illumination of the backlight area of division is adjusted, making different lamp plates, brightness is more uniform after ignition, to make to carry on the back
It is bright dark uniform in smooth surface, effectively solve the problems, such as brightness disproportionation.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (10)
1. a kind of backlight back light brightness regulating method, the backlight includes multiple lamp plates, and each lamp plate passes through independent
Control current value adjusts its backlight illumination, and the backlight illumination of each lamp plate can be learned, which is characterized in that including with
Lower step:
By the lamp plate of the backlight according to M × N region division model split be several backlight areas, wherein M be greater than or
It is equal to 2 integer, N is the integer more than or equal to 1；
For each backlight area using a lamp plate in the region as benchmark lamp plate, other lamp plates are periphery lamp plate；According to the base
The backlight illumination of quasi- lamp plate carries out brightness uniformity adjustment to the periphery lamp plate.
2. a kind of backlight back light brightness regulating method as described in claim 1, which is characterized in that the brightness uniformity tune
Whole mode is the relation curve according to electric current and brightness, and the electric current for adjusting the periphery lamp plate makes it be equal to the benchmark lamp
The electric current of plate.
3. a kind of backlight back light brightness regulating method as claimed in claim 2, which is characterized in that the electric current and brightness
Electric current and brightness are positively correlated distribution in relation curve.
4. a kind of backlight back light brightness regulating method as claimed in claim 3, which is characterized in that the adjustment periphery
The mode of lamp plate electric current are as follows:
According to the relation curve of the backlight illumination and electric current and brightness of the benchmark lamp plate and the periphery lamp plate, described in calculating
Periphery lamp plate gain back facet current value；
Driving signal is generated with the periphery lamp plate gain back facet current value, and then the periphery is adjusted by the driving signal
The backlight illumination of lamp plate.
5. a kind of backlight back light brightness regulating method as claimed in claim 4, which is characterized in that described to calculate the periphery
Lamp plate gain back facet current value, specifically includes:
On the electric current and the relation curve of brightness, corresponding first current value of backlight illumination of the periphery lamp plate is searched,
Corresponding second current value of backlight illumination of the benchmark lamp plate is searched, first current value and second current value are calculated
Difference.
6. a kind of backlight back light brightness regulating method as claimed in claim 4, which is characterized in that the driving signal adjustment
The step of backlight illumination of the periphery lamp plate includes:
According to the backlight illumination of the periphery lamp plate, confirm the backlight illumination of the periphery lamp plate relative to the benchmark lamp plate
The relative value of backlight illumination；
The size of the relative value Yu 1 is compared,
If the relative value is equal to 1, the periphery lamp plate current value is not adjusted；
If the relative value is greater than 1, the periphery lamp plate current value subtracts the gain back facet current value；
If the relative value, less than 1, the periphery lamp plate current value adds the gain back facet current value.
7. a kind of backlight back light brightness regulating method as claimed in claim 6, which is characterized in that the relative value is R=
Lv1/Lv2, wherein Lv1For the backlight illumination of the periphery lamp plate, Lv2For the backlight illumination of the benchmark lamp plate.
8. a kind of backlight back light brightness regulating method as described in claim 1, which is characterized in that the M is 3, and the N is
3；The benchmark lamp plate is the center lamp plate in the region.
9. a kind of backlight back light brightness regulating method as described in claim 1, which is characterized in that the back of each lamp plate
Brightness detection mode are as follows: in one sensor of upper installation of the backlight, its place is known by sensor detection
Brightness in lamp plate face.
10. a kind of backlight back light brightness regulating method as described in claim 1, which is characterized in that each lamp plate
Backlight illumination detection mode are as follows: measure Luminance Distribution in the lamp plate face of each lamp plate with optical measuring equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811416789.3A CN109637459A (en) | 2018-11-26 | 2018-11-26 | A kind of backlight back light brightness regulating method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811416789.3A CN109637459A (en) | 2018-11-26 | 2018-11-26 | A kind of backlight back light brightness regulating method |
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| CN201811416789.3A Pending CN109637459A (en) | 2018-11-26 | 2018-11-26 | A kind of backlight back light brightness regulating method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020259555A1 (en) * | 2019-06-25 | 2020-12-30 | 惠科股份有限公司 | Display brightness debugging method and device |
| CN114420062A (en) * | 2022-01-30 | 2022-04-29 | 京东方科技集团股份有限公司 | Method, device and system for adjusting backlight brightness and storage medium |
| CN114530128A (en) * | 2022-03-11 | 2022-05-24 | 武汉华星光电技术有限公司 | Backlight driving system and display terminal |
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| CN101937653A (en) * | 2010-09-27 | 2011-01-05 | 彩虹集团公司 | Method for adjusting subregion brightness consistency |
| CN104299601A (en) * | 2014-08-25 | 2015-01-21 | 京东方科技集团股份有限公司 | Automatic regulating method and device for backlight brightness of splicing screen and splicing screen |
| CN107293261A (en) * | 2017-07-31 | 2017-10-24 | 深圳市华星光电技术有限公司 | A kind of combination brightness uniformity control system and its control method |
| CN108766367A (en) * | 2018-05-28 | 2018-11-06 | 深圳市零度智控科技有限公司 | Backlight brightness control method, television terminal and computer readable storage medium |
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2018
- 2018-11-26 CN CN201811416789.3A patent/CN109637459A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101937653A (en) * | 2010-09-27 | 2011-01-05 | 彩虹集团公司 | Method for adjusting subregion brightness consistency |
| CN104299601A (en) * | 2014-08-25 | 2015-01-21 | 京东方科技集团股份有限公司 | Automatic regulating method and device for backlight brightness of splicing screen and splicing screen |
| CN107293261A (en) * | 2017-07-31 | 2017-10-24 | 深圳市华星光电技术有限公司 | A kind of combination brightness uniformity control system and its control method |
| CN108766367A (en) * | 2018-05-28 | 2018-11-06 | 深圳市零度智控科技有限公司 | Backlight brightness control method, television terminal and computer readable storage medium |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020259555A1 (en) * | 2019-06-25 | 2020-12-30 | 惠科股份有限公司 | Display brightness debugging method and device |
| CN114420062A (en) * | 2022-01-30 | 2022-04-29 | 京东方科技集团股份有限公司 | Method, device and system for adjusting backlight brightness and storage medium |
| WO2023143036A1 (en) * | 2022-01-30 | 2023-08-03 | 京东方科技集团股份有限公司 | Backlight brightness adjustment method, device, and system, and storage medium |
| CN114420062B (en) * | 2022-01-30 | 2023-09-26 | 京东方科技集团股份有限公司 | Backlight brightness adjusting method, device and system and storage medium |
| CN114530128A (en) * | 2022-03-11 | 2022-05-24 | 武汉华星光电技术有限公司 | Backlight driving system and display terminal |
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Application publication date: 20190416 |