CN109285507A - A kind of liquid crystal display die set and its control method - Google Patents
A kind of liquid crystal display die set and its control method Download PDFInfo
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- CN109285507A CN109285507A CN201811208343.1A CN201811208343A CN109285507A CN 109285507 A CN109285507 A CN 109285507A CN 201811208343 A CN201811208343 A CN 201811208343A CN 109285507 A CN109285507 A CN 109285507A
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- Prior art keywords
- liquid crystal
- crystal display
- value
- formula
- backlight
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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
-
- 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
Abstract
The present invention relates to a kind of liquid crystal display die set and its control methods, liquid crystal display die set includes image processing apparatus, liquid crystal display panel, positioned at the liquid crystal display panel lower section and matched backlight and positioned at multiple luminescence units of the backlight surrounding, and described image processing unit is electrically connected with the liquid crystal display panel and multiple luminescence units respectively；Described image processing unit is used for: obtaining the display data of the liquid crystal display panel；Backlight drive data are determined according to the display data；The backlight drive data are sent at least one described luminescence unit.Technical solution provided by the invention can promote the colour gamut and contrast of liquid crystal display, be effectively improved display effect.
Description
Technical field
The present invention relates to LCD Technology field more particularly to a kind of liquid crystal display die sets and its control method.
Background technique
Liquid crystal display is the display technology of new generation after CRT cathode-ray tube, experienced from monochrome and is shown to puppet
Colour display, until the development process that true color is shown.Colour gamut is the important technology index that liquid crystal display colour is shown,
The main realization rate of the colored display of liquid crystal display is colorized optical filtering technology at present, but due to current material and backlight skill
The limitation of art can not be accomplished further significantly to promote colour gamut.Contrast is also an important technology index of liquid crystal display,
The contrast of liquid crystal display is mainly and is realized by improving the light valve switch ratio of liquid crystal at present, but due to current liquid crystal material
Material, liquid crystal structure design and the limitation of actuation techniques further promote contrast also than relatively limited.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of liquid crystal display die set and its control method.
On the one hand, the present invention provides a kind of liquid crystal display die set, including image processing apparatus, liquid crystal display panel, is located at
The liquid crystal display panel lower section and matched backlight and multiple luminescence units positioned at the backlight surrounding,
Described image processing unit is electrically connected with the liquid crystal display panel and multiple luminescence units respectively.
Described image processing unit is used for:
Obtain the display data of the liquid crystal display panel.
Backlight drive data are determined according to the display data.
The backlight drive data are sent at least one described luminescence unit.
On the other hand, the present invention also provides a kind of liquid crystal display die set control methods, are applied to above-mentioned liquid crystal display die set,
This method comprises:
Step 1, the display data of liquid crystal display panel are obtained.
Step 2, backlight drive data are determined according to the display data.
Step 3, the backlight drive data are sent at least one luminescence unit.
The beneficial effect of liquid crystal display die set and its control method provided by the invention is to carry out in liquid crystal display panel color
While color content is shown, image processing apparatus determines backlight drive data, multiple luminescence units according to real-time display data
It can be carried out adjusting for the real-time light intensity of different display areas according to backlight drive data, and liquid crystal is projected to by backlight
Display panel corresponding region.Since the backlight of liquid crystal display panel will show that data constantly change with it, that is, backlight can begin
It is matched with display data eventually, the colour gamut and contrast of liquid crystal display panel can be promoted in this way, be effectively improved display effect.
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 this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the circuit connection block diagram of the liquid crystal display die set of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the liquid crystal display die set of the embodiment of the present invention；
Fig. 3 is the schematic diagram of the liquid crystal display panel display area of the embodiment of the present invention；
Fig. 4 is the schematic diagram of the luminescence unit of the embodiment of the present invention；
Fig. 5 is the flow diagram of the liquid crystal display die set control method of the embodiment of the present invention.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
As depicted in figs. 1 and 2, a kind of liquid crystal display die set provided in an embodiment of the present invention includes image processing apparatus, liquid
LCD panel 1 is located at 1 lower section of the liquid crystal display panel and matched backlight and is located at the backlight four
Week multiple luminescence units 2, described image processing unit respectively with the liquid crystal display panel 1 and multiple luminescence units 2
Electrical connection.
Described image processing unit is used for:
Obtain the display data of the liquid crystal display panel 1.
Backlight drive data are determined according to the display data.
The backlight drive data are sent at least one described luminescence unit 2.
It should be noted that since the size of usual liquid crystal display panel 1 and backlight is matched, and backlight is located at
The underface of liquid crystal display panel 1, therefore in Fig. 2 as top view, backlight is not shown.In addition, image processing apparatus
Usually it is electrically connected respectively with liquid crystal display panel 1 and luminescence unit 2 through corresponding drive module.
In the present embodiment, while liquid crystal display panel 1 carries out color content display, image processing apparatus is according to reality
When display data determine backlight drive data, multiple luminescence units 2 can carry out being directed to different displays according to backlight drive data
The real-time light intensity in region adjusts, and is projected to 1 corresponding region of liquid crystal display panel by backlight.Due to liquid crystal display panel
1 backlight will show that data constantly change with it, that is, backlight can be matched with display data always, can promote liquid crystal in this way
The colour gamut and contrast of display panel, are effectively improved display effect.
Preferably, multiple luminescence units 2 are uniformly arranged at four side edges of the backlight of rectangle, if
2 quantity of the luminescence unit for being placed in opposite two side edges of the backlight is identical and symmetrical, multiple described luminous
Unit 2 will be divided into multiple corresponding display areas with the matched liquid crystal display panel 1 of the backlight respectively.
N number of symmetrical luminescence unit is respectively set in order at backlight, that is, the upper and lower sideline of liquid crystal display panel 1
2, M symmetrical luminescence units 2 are respectively set at left and right sideline, correspondingly, there is altogether 2M+2N luminescence unit 2, and cross
Backlight is divided for M × N number of backlight area to longitudinal luminescence unit 2, that is, liquid crystal display panel 1 is divided into
M × N number of display area.By taking Fig. 2 as an example, 18 luminescence units 2 divide liquid crystal display panel 1 in order to which 5 × 4=20 shows
Region.
Described image processing unit is specifically used for:
Obtain the display data for the display area demarcated on the liquid crystal display panel.
Backlight drive data are determined according to the display data.
The backlight drive data are sent at least one described luminous list corresponding with the display area of calibration
Member.
Due to being divided liquid crystal display panel 1 for multiple display areas by luminescence unit 2, then each display area can
At least one corresponding luminescence unit 1.Since liquid crystal display panel 1 shares M row N column display area, as shown in figure 3, with the 1st row
The display area M of 1 column1N1For, corresponding luminescence unit 1 can be the 1st luminescence unit from top to bottom at backlight left side bearing
And the 1st luminescence unit from left to right at upper sideline.Obtaining display area M1N1Display data and generate corresponding backlight
After driving data, backlight drive data can be sent to above-mentioned two luminescence unit, pass through this corresponding two luminescence unit tune
Whole display area M1N1Backlight.
Wherein, the concretely red white turquoise light emitting diode of luminescence unit 1, that is, including red light emitting diodes list
Member, white light-emitting diode unit, green LED unit and blue LED unit, and the row of each display area
Pixel number is X, and column pixel number is Y.
Preferably, described image processing unit is specifically also used to:
Red luma value corresponding with the display area, Green brightness value, indigo plant are determined respectively according to the display data
Colour brightness value and white brightness value.
Specifically, the red luma value, first formula are determined according to the first formula are as follows:
Wherein, LRFor the red luma value, PixelRFor the red pixel numerical value of the display area.
The Green brightness value, second formula are determined according to the second formula are as follows:
Wherein, LGFor the Green brightness value, PixelGFor the green pixel numerical value of the display area.
The blue intensity values, the third formula are determined according to third formula are as follows:
Wherein, LBFor the blue intensity values, PixelBFor the blue pixel numerical value of the display area.
The white brightness value, the 4th formula are determined according to the 4th formula are as follows:
LW=LR+LG+LB。
Wherein, LWFor the white brightness value.
And respectively according to the red luma value, the Green brightness value, the blue intensity values and the white brightness
Value generates the respective leds red driving current value I as the backlight drive dataR, green driving current value IG, it is blue
Color driving current value IBWith white driving current value IW。
Specifically, IR=f (LR) ρ, IG=f (LG) ρ, IB=f (LB) ρ, IW=f (LW) ρ, wherein ρ is ratio
Coefficient.
By respectively driving red, green, blue and white light emitting diode, it can be obtained and show that content is corresponding with liquid crystal display panel
Backlight color and intensity.Because being different from the driving that is always on of existing backlight, backlight luminescence light source of the invention, that is, accordingly
Turquoise white light emitting diode with liquid crystal display panel show content driven respectively, improve liquid crystal display colour gamut and
Contrast is effectively improved its display effect.
Preferably, as shown in figure 4, the optical path direction along each luminescence unit 2 is provided with matched luxuriant and rich with fragrance alunite
That lens 3.
The point light source of light emitting diode can be adjusted to directional light by Fresnel Lenses.In addition, arrow direction is light in Fig. 4
Road direction.
Preferably, the Fresnel Lenses 3 is the Fresnel Lenses or each Fresnel Lenses handled through frosted
Matched astigmatic membrane 4 is provided in front of 3 optical path direction.
Frosted processing is carried out to lens, or astigmatic membrane is set before lens, it is ensured that every group of luminescence unit interval light
Road is soft.Light is projected to backlight after lens and astigmatic membrane, the light source as liquid crystal display panel 1.
As shown in figure 5, a kind of control method applied to above-mentioned liquid crystal display die set provided in an embodiment of the present invention includes:
Step 1, the display data of liquid crystal display panel are obtained.
Step 2, backlight drive data are determined according to the display data.
Step 3, the backlight drive data are sent at least one luminescence unit.
Preferably, the specific implementation of the step 1 are as follows: obtain the display number for the display area demarcated on liquid crystal display panel
According to；The specific implementation of the step 3 are as follows: be sent to the backlight drive data corresponding extremely with the display area of calibration
A few luminescence unit.
Preferably, the luminescence unit is red white turquoise light emitting diode, and the step 2 includes:
Step 2.1, determine that red luma value corresponding with the display area, green are bright respectively according to the display data
Angle value, blue intensity values and white brightness value.
Step 2.2, respectively according to the red luma value, the Green brightness value, blue intensity values and described white
Colour brightness value generates the light emitting diode red driving current value as the backlight drive data, green driving current value, indigo plant
Color driving current value and white driving current value.
Preferably, the row pixel number of the display area is X, and column pixel number is Y, the specific implementation packet of the step 2.1
It includes:
The red luma value, first formula are determined according to the first formula are as follows:
Wherein, LRFor the red luma value, PixelRFor the red pixel numerical value of the display area.
The Green brightness value, second formula are determined according to the second formula are as follows:
Wherein, LGFor the Green brightness value, PixelGFor the green pixel numerical value of the display area.
The blue intensity values, the third formula are determined according to third formula are as follows:
Wherein, LBFor the blue intensity values, PixelBFor the blue pixel numerical value of the display area；
The white brightness value, the 4th formula are determined according to the 4th formula are as follows:
LW=LR+LG+LB。
Wherein, LWFor the white brightness value.
Reader should be understood that in the description of this specification reference term " one embodiment ", " is shown " some embodiments "
The description of example ", specific examples or " some examples " etc. mean specific features described in conjunction with this embodiment or example, structure,
Material or feature are included at least one embodiment or example of the invention.In the present specification, above-mentioned term is shown
The statement of meaning property need not be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described
It may be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this
The technical staff in field can be by the spy of different embodiments or examples described in this specification and different embodiments or examples
Sign is combined.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of liquid crystal display die set, which is characterized in that including image processing apparatus, liquid crystal display panel, be located at the liquid crystal
Display panel lower section and matched backlight and multiple luminescence units positioned at the backlight surrounding, described image
Processing unit is electrically connected with the liquid crystal display panel and multiple luminescence units respectively；
Described image processing unit is used for:
Obtain the display data of the liquid crystal display panel；
Backlight drive data are determined according to the display data；
The backlight drive data are sent at least one described luminescence unit.
2. liquid crystal display die set according to claim 1, which is characterized in that multiple luminescence units are uniformly arranged on square
At four side edges of the backlight of shape, it is set to the luminescence unit of opposite two side edges of the backlight
Quantity is identical and symmetrical, and the liquid crystal display panel is divided into multiple corresponding displays respectively by multiple luminescence units
Region；
Described image processing unit is specifically used for:
Obtain the display data for the display area demarcated on the liquid crystal display panel；
Backlight drive data are determined according to the display data；
The backlight drive data are sent at least one described luminescence unit corresponding with the display area of calibration.
3. liquid crystal display die set according to claim 2, which is characterized in that the luminescence unit is red white turquoise luminous two
Pole pipe；
Described image processing unit is specifically also used to:
Determine that red luma value corresponding with the display area, Green brightness value, blue are bright respectively according to the display data
Angle value and white brightness value；
It is generated respectively according to the red luma value, the Green brightness value, the blue intensity values and the white brightness value
As the respective leds red driving current value of the backlight drive data, green driving current value, blue driving electricity
Flow valuve and white driving current value.
4. liquid crystal display die set according to claim 3, which is characterized in that the row pixel number of the display area is X, column
Pixel number is Y, and described image processing unit is specifically also used to:
The red luma value, first formula are determined according to the first formula are as follows:
Wherein, LRFor the red luma value, PixelRFor the red pixel numerical value of the display area；
The Green brightness value, second formula are determined according to the second formula are as follows:
Wherein, LGFor the Green brightness value, PixelGFor the green pixel numerical value of the display area；
The blue intensity values, the third formula are determined according to third formula are as follows:
Wherein, LBFor the blue intensity values, PixelBFor the blue pixel numerical value of the display area；
The white brightness value, the 4th formula are determined according to the 4th formula are as follows:
LW=LR+LG+LB,
Wherein, LWFor the white brightness value.
5. liquid crystal display die set according to any one of claims 1 to 4, which is characterized in that each luminescence unit
Matched Fresnel Lenses is provided in front of optical path direction.
6. liquid crystal display die set according to claim 5, which is characterized in that the Fresnel Lenses is to handle through frosted
Matched astigmatic membrane is provided in front of the optical path direction of Fresnel Lenses or each Fresnel Lenses.
7. a kind of liquid crystal display die set control method, which is characterized in that be applied to such as liquid as claimed in any one of claims 1 to 6
Brilliant display module, which comprises
Step 1, the display data of liquid crystal display panel are obtained；
Step 2, backlight drive data are determined according to the display data；
Step 3, the backlight drive data are sent at least one luminescence unit.
8. liquid crystal display die set control method according to claim 7, which is characterized in that the specific implementation of the step 1
Are as follows: obtain the display data for the display area demarcated on liquid crystal display panel；The specific implementation of the step 3 are as follows: by the back
Optical drive data are sent at least one luminescence unit corresponding with the display area of calibration.
9. liquid crystal display die set control method according to claim 8, which is characterized in that the luminescence unit is red white green
Blue light emitting diode, the step 2 include:
Step 2.1, red luma value corresponding with the display area, Green brightness are determined respectively according to the display data
Value, blue intensity values and white brightness value；
Step 2.2, bright according to the red luma value, the Green brightness value, the blue intensity values and the white respectively
Angle value generates the light emitting diode red driving current value as the backlight drive data, green driving current value, blue and drives
Streaming current value and white driving current value.
10. liquid crystal display die set control method according to claim 9, which is characterized in that the row picture of the display area
Prime number is X, and column pixel number is Y, and the specific implementation of the step 2.1 includes:
The red luma value, first formula are determined according to the first formula are as follows:
Wherein, LRFor the red luma value, PixelRFor the red pixel numerical value of the display area；
The Green brightness value, second formula are determined according to the second formula are as follows:
Wherein, LGFor the Green brightness value, PixelGFor the green pixel numerical value of the display area；
The blue intensity values, the third formula are determined according to third formula are as follows:
Wherein, LBFor the blue intensity values, PixelBFor the blue pixel numerical value of the display area；
The white brightness value, the 4th formula are determined according to the 4th formula are as follows:
LW=LR+LG+LB,
Wherein, LWFor the white brightness value.
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| CN201811208343.1A CN109285507A (en) | 2018-10-17 | 2018-10-17 | A kind of liquid crystal display die set and its control method |
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| CN201811208343.1A CN109285507A (en) | 2018-10-17 | 2018-10-17 | A kind of liquid crystal display die set and its control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110412796A (en) * | 2019-09-03 | 2019-11-05 | 王汉锋 | A kind of multiple light courcess backlight module, display and local controlled light method |
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Application publication date: 20190129 |