CN106448571B - The driving method and driving device, LCD TV of side incident type liquid crystal display systems - Google Patents
The driving method and driving device, LCD TV of side incident type liquid crystal display systems Download PDFInfo
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- CN106448571B CN106448571B CN201610826625.2A CN201610826625A CN106448571B CN 106448571 B CN106448571 B CN 106448571B CN 201610826625 A CN201610826625 A CN 201610826625A CN 106448571 B CN106448571 B CN 106448571B
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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
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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
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- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
- Liquid Crystal (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The present invention proposes the driving method and driving device of a kind of side incident type liquid crystal display systems, LCD TV, liquid crystal display systems includes master chip, mainboard, constant current driving plate, and backlight display unit, it is decoded and is analyzed by image of the master chip to input mainboard first, obtain the location distribution information for accounting for the brightest area of described image 10%-25%, it is sent to constant current driving plate, constant current driving plate is according to the location distribution information, restriction is done to the electric current of the LED light group of each luminance area corresponding to image to distinguish, making the LED light group of brightest area has current peak, the driving current of the LED light group in other regions is limited within the 50% of the current peak, then the LED light group of each luminance area is driven to shine, HDR image is shown by backlight display unit.The driving method of liquid crystal display systems of the invention, vision is bad caused by effectively reducing the power consumption of liquid crystal display systems, also solving because of heat dissipation, reduces costs.
Description
Technical field
The present invention relates to technical field of liquid crystal display more particularly to a kind of driving methods of side incident type liquid crystal display systems
And driving device, LCD TV.
Background technique
HDR (high dynamic range) LCD TV mostly uses side incident type liquid crystal display die set at present, in order to make side incident type
The peak brightness of HDR TV reaches the requirement of 450-800nit or more, and side entering type mould group, which mostly uses, increases LED light, using well
Optical diaphragm, realized using high permeability glass, but all have the following problems: after increasing LED light, LCD TV
Power consumption is excessive and LED light increase after radiate difficult, when system overheat, can cause optical diaphragm to wrinkle, and cause vision not
It is good；Furthermore increase LED light, increase the cost of LCD TV again using good optical module or using high permeability glass.
Summary of the invention
The main purpose of the present invention is to provide a kind of driving methods of side incident type liquid crystal display systems, it is intended to solve existing
Have and uses the technical issues of LCD TV power consumption of side incident type liquid crystal display die set is excessive, heat dissipation is difficult, higher cost.
To achieve the above object, the present invention proposes a kind of driving method of side incident type liquid crystal display systems, the liquid crystal
Show that system includes master chip, mainboard, constant current driving plate and backlight display unit, the driving method the following steps are included:
Master chip is decoded and analyzes to the image of input mainboard, obtains the highlights for accounting for described image 10%-25%
The location distribution information in domain is sent to constant current driving plate；
Constant current driving plate is according to the location distribution information, to the electricity of the LED light group of the corresponding luminance area of described image
Stream does restriction and distinguishes, and the LED light group of brightest area is made to have current peak, and the driving current of the LED light group in other regions limits
Within the 50% of the current peak；
Constant current driving plate drives the LED light group of each luminance area to shine, and backlight display unit shows HDR image.
Further, the constant current driving plate drives the LED light group of each luminance area to shine, and backlight display unit is shown
The step of HDR image out specifically includes:
Constant current driving plate drives the LED light group of each luminance area to shine, so that 10%-25% in backlight display unit
HDR image has peak brightness, and the HDR image of 75%-90% has representative value brightness.
Further, the LED light group is divided into multiple subregions, each subregion has the LED light of identical quantity.
Further, the power of the backlight display unit is P=PO*q+PO* (1-q) * (LN/LM), wherein POIt is LED
The general power of lamp group, 10%≤q≤25%, LMIt is peak brightness, LNIt is representative value brightness.
Further, the peak brightness is 800nit, and the representative value brightness is 500nit.
Further, the peak brightness is 800nit, and the representative value brightness is 300nit.
Another object of the present invention is to provide a kind of driving devices of side incident type liquid crystal display systems, comprising:
Position information acquisition module is decoded and analyzes to the image of input mainboard, and acquisition accounts for described image 10%-
The location distribution information of 25% brightest area；
Electric current, which is distinguished, limits module, according to the location distribution information, to the LED light of the corresponding luminance area of described image
The electric current of group does restriction and distinguishes, and the LED light group of brightest area is made to have current peak, the driving electricity of the LED light group in other regions
Stream is limited within the 50% of the current peak；And
Image display drives the LED light group of each luminance area to shine, shows HDR image.
Further, which further includes power module, is position information acquisition module, electric current differentiation restriction mould
Block and image display provide power supply.
Further, described image display module controls 10%- after the LED light group for driving each luminance area shines
25% HDR image has peak brightness, and the HDR image of 75%-90% has representative value brightness.
The present invention also provides a kind of LCD TVs, the driving dress including incident type liquid crystal display systems in side as described above
It sets.
The driving method of side incident type liquid crystal display systems of the invention, liquid crystal display systems include master chip, mainboard, perseverance
Driving plate and backlight display unit are flowed, is decoded first by image of the master chip to input mainboard, analyzes the highlights of image
Domain obtains the location distribution information for accounting for the brightest area of described image 10%-25%, is sent to constant current driving plate, constant current driving
Plate does restriction to the electric current of the LED light group of each luminance area corresponding to image and distinguishes, make according to the location distribution information
The LED light group of brightest area has current peak, and the driving current of the LED light group in other regions is limited in the current peak
Within 50%, then drives the LED light group of each luminance area to shine, HDR image is shown by backlight display unit.The present invention
Liquid crystal display systems driving method, by image brightest area control in 10%-25%, then make brightest area
LED light group has current peak, and the driving current in other regions controls within the 50% of current peak, effectively reduces liquid crystal
The power consumption of display system, also solve because heat dissipation caused by vision it is bad, reduce costs.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the flow chart of one embodiment of driving method of incident type liquid crystal display systems in side of the present invention；
Fig. 2 is the functional block diagram of one embodiment of driving device of incident type liquid crystal display systems in side of the present invention.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 10 | Position information acquisition module | 30 | Image display |
| 20 | Electric current, which is distinguished, limits module | 40 | Power module |
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art under that premise of not paying creative labor it is obtained it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and should not be understood as referring to
Show or imply its relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " are defined as a result,
Two " feature can explicitly or implicitly include at least one of the features.In addition, the technical solution between each embodiment can
It to be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution occurs
Conflicting or cannot achieve when, will be understood that the combination of this technical solution is not present, also not the present invention claims protection model
Within enclosing.
Referring to Fig.1, Fig. 1 is a kind of process of one embodiment of driving method of side incident type liquid crystal display systems of the present invention
Figure, in this embodiment, liquid crystal display systems includes master chip, mainboard, constant current driving plate and backlight display unit, the driving
Method the following steps are included:
S10: master chip is decoded and analyzes to the image of input mainboard, and acquisition accounts for described image 10%-25% most
The location distribution information of bright area is sent to constant current driving plate；
S20: constant current driving plate is according to the location distribution information, to the LED light group of the corresponding luminance area of described image
Electric current do restriction distinguish, make brightest area LED light group have current peak, the driving current of the LED light group in other regions
It is limited within the 50% of the current peak；
S30: constant current driving plate drives the LED light group of each luminance area to shine, and backlight display unit shows that HDR schemes
Picture.
The driving method of the side incident type liquid crystal display systems of the present embodiment, liquid crystal display systems include the master being electrically connected
Chip, mainboard, constant current driving plate and backlight display unit；The driving method first by master chip to input mainboard image into
Row decoding, analyzes the brightest area in the image, obtains the position distribution letter for the brightest area for accounting for described image 10%-25%
Breath, is sent to constant current driving plate, the location distribution information of the brightest area is calculated by data statistics；Constant current driving plate is received
To after the location distribution information of brightest area, according to the location distribution information, each luminance area corresponding to described image
The electric current of LED light group do restriction and distinguish, the LED light group for making to account for the brightest area of described image 10%-25% has current peak
Value, the driving current of the LED light group in other regions is limited within the 50% of the current peak, to guarantee the brightness in the region
It can achieve in the brightness range that consumer is comfortable on；It is finally driven by constant current driving plate and is driven according to the electric current distinguished after limiting
The LED light group for moving each luminance area shines, and backlight display unit shows HDR image.
The driving method of the side incident type liquid crystal display systems of the present embodiment exists the brightest area control in image
10%-25%, then makes the LED light group of brightest area have current peak, and the driving current in other regions is controlled in current peak
Within the 50% of value, vision is bad caused by effectively reducing the power consumption of liquid crystal display systems, also solving because of heat dissipation, drop
Low cost.
Further, step 30, it specifically includes:
S31: constant current driving plate drives the LED light group of each luminance area to shine, so that 10%- in backlight display unit
25% HDR image has peak brightness, and the HDR image of 75%-90% has representative value brightness.
The driving method of the side incident type liquid crystal display systems of the present embodiment, constant current driving plate is according to the electric current for distinguishing restriction
It drives the LED light group of each luminance area to shine, makes the LED light group of brightest area that there is current peak, and the LED in other regions
The driving current of lamp group controls within the 50% of current peak, so that the HDR of 10%-25% schemes in backlight display unit
As having peak brightness, the HDR image of 75%-90% has representative value brightness, effectively reduces the power of liquid crystal display systems
Consumption.
Further, the LED light group is divided into multiple subregions, each subregion has the LED light of identical quantity.
The driving method of the side incident type liquid crystal display systems of the present embodiment, the LED light group are divided into multiple subregions, so as to
It does restriction in electric current of the constant current driving plate to each subregion to distinguish, each subregion has the LED light of identical quantity, to guarantee to carry on the back
The image uniform that light display unit is shown.
Further, the power of the backlight display unit is P=PO*q+PO* (1-q) * (LN/LM), wherein POIt is LED
The general power of lamp group, 10%≤q≤25%, LMIt is peak brightness, LNIt is representative value brightness.
The driving method of the side incident type liquid crystal display systems of the present embodiment, the power of backlight display unit are P=PO*q+
PO* (1-q) * (LM/LN), POIt is the general power of LED light group, 10%≤q≤25%, LMIt is peak brightness；LNIt is that representative value is bright
Degree.In one embodiment, using 144 LED, each LED is 3.3V twin crystal string, and driving current is in 120mA, in traditional liquid crystal
In display driving, the general power of LED light group is 2*3.3V*120mA*144=114W；
Using the driving method of the side incident type liquid crystal display systems of the present embodiment:
In q=25%, LM=800nit, LNWhen=500nit, the power for calculating backlight display unit is P=114*25%+
114*75%*0.625=81.9W；
In q=25%, LM=800nit, LN=300nit, the power for calculating backlight display unit is P=114*25%
+ 114*75%*0.375=60.6W；
In q=10%, LM=800nit, LN=500nit, the power for calculating backlight display unit is P=114*10%
+ 114*90%*0.625=75.5W；
In q=10%, LM=800nit, LN=300nit, the power for calculating backlight display unit is P=114*10%
+ 114*90%*0.375=49.9W；
Therefore, after using the driving method of the side incident type liquid crystal display systems of the present embodiment, backlight display unit
Power ratio reduced at least 28.2% originally, significantly reduced the power consumption of liquid crystal display systems.
It is a kind of functional block diagram of one embodiment of driving device of side incident type liquid crystal display systems referring to Fig. 2, Fig. 2,
In this embodiment, which includes:
Position information acquisition module 10 is decoded and analyzes to the image of input mainboard, and acquisition accounts for described image 10%-
The location distribution information of 25% brightest area；
Electric current, which is distinguished, limits module 20, according to the location distribution information, to the LED of the corresponding luminance area of described image
The electric current of lamp group does restriction and distinguishes；
Image display 30 drives the LED light group of each luminance area to shine, shows HDR image；
Power module 40 distinguishes restriction module for position information acquisition module, electric current and image display provides electricity
Source.
The driving device of the side incident type liquid crystal display systems of the present embodiment, the driving device include that location information obtains mould
Block 10, electric current, which are distinguished, limits module 20 and image display 30.Wherein, by 10 pairs of input mainboards of position information acquisition module
Image be decoded, analyze image in brightest area, obtain account for described image image 10%-25% brightest area position
Distributed intelligence is set, module 20 is then limited according to the location distribution information by electric current differentiation, it is corresponding to described image each
The electric current of the LED light group of luminance area does restriction and distinguishes, and the LED light group of brightest area is made to have current peak, other regions
The driving current of LED light group is limited within the 50% of the current peak, to guarantee that the brightness in the region can achieve consumption
In the brightness range that person is comfortable on, finally sent out by image display 30 with the LED light group of current peak driving brightest area
Light drives the LED light group in other regions to shine, shows HDR image with the driving current within current peak 50%.The driving
Device further includes power module 40, is position information acquisition module 10, electric current differentiation restriction module 20 and image display 30
Power supply is provided to support.
The driving device of the side incident type liquid crystal display systems of the present embodiment exists the brightest area control in image
10%-25%, then makes the LED light group of brightest area have current peak, and the driving current in other regions is controlled in current peak
Within the 50% of value, vision is bad caused by effectively reducing the power consumption of liquid crystal display systems, also solving because of heat dissipation, drop
Low cost.
Further, referring to Fig. 2, described image display module 30 after the LED light group for driving each luminance area shines,
The HDR image for controlling 10%-25% has peak brightness, and the HDR image of 75%-90% has representative value brightness.
The driving device of the side incident type liquid crystal display systems of the present embodiment, image display 30 are driven with current peak
The LED light group of brightest area shines, and drives the LED light group in other regions to shine with the driving current within current peak 50%,
So that the HDR image of 10%-25% has peak brightness, the HDR image of 75%-90% has representative value brightness, effectively
Reduce the power consumption of liquid crystal display systems.
The present invention also provides a kind of LCD TVs, the driving dress including incident type liquid crystal display systems in side as described above
It sets.
The driving device of the side incident type liquid crystal display systems of the LCD TV of the present embodiment, including location information obtain mould
Block 10, electric current are distinguished restriction module 20, image display 30 and power module 40, the LCD TV and are filled by the driving
Then set to control the brightest area in image makes the LED light group of brightest area have current peak in 10%-25%, other
The driving current in region controls within the 50% of current peak, effectively reduces the power consumption of LCD TV, also solves
Because heat dissipation caused by vision it is bad, reduce costs simultaneously.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent transformation made by description of the invention and accompanying drawing content, or directly/it is used in it indirectly
He is included in scope of patent protection of the invention relevant technical field.
Claims (8)
1. a kind of driving method of side incident type liquid crystal display systems, which includes master chip, mainboard, constant current drive
Movable plate and backlight display unit, which is characterized in that the driving method the following steps are included:
Master chip is decoded and analyzes to the image of input mainboard, obtains the brightest area for accounting for described image 10%-25%
Location distribution information is sent to constant current driving plate；
Constant current driving plate does the electric current of the LED light group of the corresponding luminance area of described image according to the location distribution information
It limits and distinguishes, make the LED light group of brightest area that there is current peak, the driving current of the LED light group in other regions is limited in institute
Within state current peak 50%；
Constant current driving plate drives the LED light group of each luminance area to shine according to the electric current distinguished after limiting, backlight display unit
Show HDR image；
Wherein, constant current driving plate drives the LED light group of each luminance area to shine, so that 10%-25% in backlight display unit
HDR image there is peak brightness, the HDR image of 75%-90% has representative value brightness；Representative value brightness is less than and/or waits
In the 50% of peak brightness.
2. the driving method of incident type liquid crystal display systems in side according to claim 1, which is characterized in that the LED light
Group is divided into multiple subregions, each subregion has the LED light of identical quantity.
3. the driving method of incident type liquid crystal display systems in side according to claim 1, which is characterized in that the backlight is aobvious
The power for showing unit is P=PO*q+PO* (1-q) * (LN/LM), wherein POIt is the general power of LED light group, 10%≤q≤25%,
LMIt is peak brightness, LNIt is representative value brightness；
Wherein, q is the accounting that HDR image has peak brightness in backlight display unit.
4. the driving method of incident type liquid crystal display systems in side according to claim 1 or 3, which is characterized in that the peak
Value brightness is 800nit, and the representative value brightness is 500nit.
5. the driving method of incident type liquid crystal display systems in side according to claim 1 or 3, which is characterized in that the peak
Value brightness is 800nit, and the representative value brightness is 300nit.
6. a kind of driving device of side incident type liquid crystal display systems characterized by comprising
Position information acquisition module is decoded and analyzes to the image of input mainboard, and acquisition accounts for described image 10%-25%'s
The location distribution information of brightest area；
Electric current, which is distinguished, limits module, according to the location distribution information, to the LED light group of the corresponding luminance area of described image
Electric current does restriction and distinguishes, and the LED light group of brightest area has current peak, and the driving current of the LED light group in other regions limits
Within the 50% of the current peak；And
Image display drives the LED light group of each luminance area to shine, shows HDR according to the electric current distinguished after limiting
Image；
Wherein, described image display module controls the HDR of 10%-25% after the LED light group for driving each luminance area shines
Image has peak brightness, and the HDR image of 75%-90% has representative value brightness；Representative value brightness is less than and/or is equal to peak value
The 50% of brightness.
7. driving device according to claim 6, which is characterized in that the driving device further include: power module is position
Data obtaining module, electric current, which are distinguished, limits module and image display offer power supply.
8. a kind of LCD TV, which is characterized in that the LCD TV includes side incident type liquid crystal as claimed in claims 6 or 7
The driving device of display system.
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| CN107240376A (en) * | 2017-07-07 | 2017-10-10 | 青岛海信电器股份有限公司 | Method for controlling backlight thereof, device and liquid crystal display |
| CN107465961B (en) * | 2017-07-17 | 2020-06-09 | 深圳创维－Rgb电子有限公司 | Peak brightness improving method, storage medium and smart television |
| CN108882442B (en) * | 2018-05-18 | 2020-04-21 | 京东方科技集团股份有限公司 | Backlight source, control method of backlight source and display device |
| CN110956932B (en) | 2018-09-27 | 2021-01-29 | 京东方科技集团股份有限公司 | Display device, driving method thereof, driving apparatus thereof, and computer readable medium |
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| KR100950682B1 (en) * | 2008-07-24 | 2010-03-31 | 전자부품연구원 | Apparatus and method for compensating brightness of back light |
| KR101067631B1 (en) * | 2009-10-13 | 2011-09-26 | 주식회사 티엘아이 | Local Dimming type LCD for producing Driving voltage having the level responding the illuminance of neigboring back light block |
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| CN101681035A (en) * | 2007-07-27 | 2010-03-24 | 夏普株式会社 | Liquid crystal display device, television receiver, and illumination device |
| CN101426313A (en) * | 2008-12-04 | 2009-05-06 | 上海广电光电子有限公司 | Back light source driving method for LED |
| CN105185328A (en) * | 2015-09-01 | 2015-12-23 | 青岛海信电器股份有限公司 | Liquid crystal display brightness control method and device and liquid crystal display device |
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