CN107393483A - Quantum dot liquid crystal display and its white point adjusting apparatus, white point method of adjustment - Google Patents
Quantum dot liquid crystal display and its white point adjusting apparatus, white point method of adjustment Download PDFInfo
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- CN107393483A CN107393483A CN201710606033.4A CN201710606033A CN107393483A CN 107393483 A CN107393483 A CN 107393483A CN 201710606033 A CN201710606033 A CN 201710606033A CN 107393483 A CN107393483 A CN 107393483A
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- white point
- quantum dot
- liquid crystal
- chromaticity coordinates
- coordinates value
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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
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal (AREA)
Abstract
The invention provides a kind of white point adjusting apparatus of quantum dot liquid crystal display, it includes：Sensing unit, the white point chromaticity coordinates value of the liquid crystal panel for sensing the quantum dot liquid crystal display；Control unit, for producing driving control signal according to the white point chromaticity coordinates value of sensing；Backlight driving unit, driving current for the light source of the backlight module according to the driving control signal adjustment quantum dot liquid crystal display, to adjust the amount of light of the light source, so that the white point chromaticity coordinates value of the liquid crystal panel is identical with predetermined white point chromaticity coordinates value.Present invention also offers a kind of white point method of adjustment of quantum dot liquid crystal display and quantum dot liquid crystal display.The present invention can quickly adjust the white point adjusting apparatus and white point method of adjustment of the white point chromaticity coordinates value of liquid crystal display, without repeatedly measurement adjustment, cause that adjustment is stable while saving time and cost again.
Description
Technical field
The invention belongs to display technology field, specifically, is related to a kind of quantum dot liquid crystal display and its white point adjustment
Device, white point method of adjustment.
Background technology
Quantum dot (Quantum Dot, abbreviation QD) technology, is that electronics is strapped in a range of semiconductor nano material
Expect structure technology.Quantum dot is made up of extra small compound crystalline solid of the size in 1~100nm.In technology of quantum dots
In, control the wavelength of light, and then the accurate color for controlling light, therefore technology of quantum dots using the crystalline solid of different sizes
It is widely used in liquid crystal display.In the liquid crystal display of technology of quantum dots is applied, using high spectrum light source (such as
Blue-ray LED) irradiation quanta point material, the light for producing different wave length can be excited, by adjusting the size of quanta point material, i.e.,
The color of adjustable synthesis light, so as to realize the backlighting requirements of the liquid crystal display of high colour gamut (such as 100%NTSC).
However, applying the liquid crystal display of technology of quantum dots existing, the actual white point color of liquid crystal display is sat
Scale value (x, y) has very large deviation with the good white point chromaticity coordinates value (x, y) of Theoretical Design.In order that the actual white point of liquid crystal display
Chromaticity coordinates value (x, y) and the good white point chromaticity coordinates value (x, y) of Theoretical Design unanimously, generally require repeatedly measurement adjustment, during consuming
Between and can cause while cost to adjust unstable.
The content of the invention
In order to solve above-mentioned problem of the prior art, it is an object of the invention to provide one kind can quickly adjust white point color
The quantum dot liquid crystal display and its white point adjusting apparatus of coordinate value, white point method of adjustment.
According to an aspect of the present invention, there is provided a kind of white point adjusting apparatus of quantum dot liquid crystal display, it includes：Sense
Survey unit, the white point chromaticity coordinates value of the liquid crystal panel for sensing the quantum dot liquid crystal display；Control unit, for basis
The white point chromaticity coordinates value of sensing produces driving control signal；Backlight driving unit, described in being adjusted according to driving control signal
The driving current of the light source of the backlight module of quantum dot liquid crystal display, to adjust the amount of light of the light source, so that described
The white point chromaticity coordinates value of liquid crystal panel is identical with predetermined white point chromaticity coordinates value.
Alternatively, the quantum dot of the quantum dot liquid crystal display includes red quantum dot and green quantum dot, described red
The wavelength of the fluorescence peak of color quantum dot is 635nm, and the wavelength of the fluorescence peak of affiliated green quantum dot is 535nm.
Alternatively, the light source is blue-ray LED.
According to another aspect of the present invention, a kind of white point method of adjustment of quantum dot liquid crystal display is additionally provided, it is wrapped
Include step：Sense the white point chromaticity coordinates value of the liquid crystal panel of the quantum dot liquid crystal display；According to the white point chromaticity coordinates of sensing
Value produces driving control signal；The light source of the backlight module of the quantum dot liquid crystal display is adjusted according to driving control signal
Driving current, to adjust the amount of light of the light source, until making the white point chromaticity coordinates value of the liquid crystal panel and predetermined white point
Chromaticity coordinates value is identical.
According to another aspect of the invention, a kind of quantum dot liquid crystal display is provided again, and it includes：Liquid crystal panel, the back of the body
Optical module, quantum dot device and white point adjusting apparatus, the liquid crystal panel and the backlight module are oppositely arranged, the quantum dot
Device is arranged between the liquid crystal panel and the backlight module, and the light of the backlight module outgoing passes through the quantum dot device
Part and be supplied to the liquid crystal panel；The white point adjusting apparatus is configured to：Sense the white point chromaticity coordinates of the liquid crystal panel
Value, driving control signal is produced according to the white point chromaticity coordinates value of sensing, and the backlight module is adjusted according to driving control signal
The driving current of light source, to adjust the amount of light of the light source, so that the white point chromaticity coordinates value of the liquid crystal panel is with making a reservation for
White point chromaticity coordinates value it is identical.
Alternatively, the quantum dot device includes red quantum dot and green quantum dot, the fluorescence of the red quantum dot
Peak wavelength is 635nm, and the wavelength of the fluorescence peak of affiliated green quantum dot is 535nm.
Beneficial effects of the present invention：The invention provides a kind of white point chromaticity coordinates value that can quickly adjust liquid crystal display
White point adjusting apparatus and white point method of adjustment, without repeatedly measurement adjustment, cause to adjust again while saving time and cost
It is stable.
Brief description of the drawings
The following description carried out in conjunction with the accompanying drawings, above and other aspect, feature and the advantage of embodiments of the invention
It will become clearer, in accompanying drawing：
Fig. 1 is the structural representation of quantum dot liquid crystal display according to an embodiment of the invention；
Fig. 2 is the flow chart of the white point method of adjustment of quantum dot liquid crystal display according to an embodiment of the invention.
Embodiment
Hereinafter, with reference to the accompanying drawings to embodiments of the invention are described in detail.However, it is possible to come in many different forms real
Apply the present invention, and the specific embodiment of the invention that should not be construed as limited to illustrate here.Conversely, there is provided these implementations
Example is in order to explain the principle and its practical application of the present invention, so that others skilled in the art are it will be appreciated that the present invention
Various embodiments and be suitable for the various modifications of specific intended application.
In the accompanying drawings, in order to understand device, layer and the thickness in region are exaggerated.Identical label is in entire disclosure and attached
It can be used to represent identical element in figure.
Fig. 1 is the structural representation of quantum dot liquid crystal display according to an embodiment of the invention.
Reference picture 1, quantum dot liquid crystal display according to an embodiment of the invention include：Liquid crystal panel 100, backlight module
200th, quantum dot device 300 and white point adjusting apparatus 400.
Specifically, backlight module 200 includes：Light guide plate 210, light source 220 and reflector plate 230.Light guide plate 210 includes light extraction
Top surface 211, the bottom surface 212 relative with light extraction top surface 211 and the light incident sides 213 for being connected light extraction top surface 211 and bottom surface 212.
Light source 220 is adjacent to light incident sides 213 and set.Reflector plate 230 is set towards bottom surface 212.
Liquid crystal panel 100 is oppositely arranged with backlight module 200, and liquid crystal panel 100 faces to set with light extraction top surface 211
Put.Quantum dot device 300 is arranged between liquid crystal panel 100 and backlight module 200, and quantum dot device 300 is located at light extraction
On top surface 211.
In the present embodiment, quantum dot device 300 includes some red quantum dots 310 and some green quantum dots 320.Its
In, the wavelength of the fluorescence peak of red quantum dot 310 is 635nm, and the wavelength of the fluorescence peak of green quantum dot 320 is 535nm, but this
Invention is not restricted to this.
Light source 220 can be for example blue-ray LED, but the present invention is not restricted to this.The light that light source 220 is emitted is via entering light
Side 213 enters in light guide plate 210, is emitted after well mixed by light extraction top surface 211, the light being emitted by light extraction top surface 211 enters
After entering quantum dot device 300, red quantum dot 310 and green quantum dot 320 in excitation quantum point device 300, and produce respectively
Feux rouges and green glow are given birth to, white light is formed after caused feux rouges, green glow and blue light and is supplied to liquid crystal panel 100, so that liquid crystal
Panel 100 shows image.
White point adjusting apparatus 400 includes：Sensing unit 410, control unit 420, backlight driving unit 430.
During liquid crystal panel 100 shows image, sensing unit 410 is configured to sense the white of liquid crystal panel 100
Point chromaticity coordinates value, i.e., actual white point chromaticity coordinates value；Control unit 420 is configured to produce drive according to the white point chromaticity coordinates value of sensing
Dynamic control signal；Backlight driving unit 430 is configured to adjust the driving current of light source 220 according to driving control signal, to adjust
The amount of light of whole light source 220.
Further, by adjusting the amount of light of light source 220, so as to adjust by red quantum dot 310 and amount of green color
Son point 320 excites the amount of feux rouges and green glow caused by difference, and then adjusts the chromaticity coordinates value of the white light formed.
Here, it is necessary to illustrate, after backlight driving unit 430 adjusts the driving current of light source 220, if white point
Chromaticity coordinates value also differs with predetermined white point chromaticity coordinates value, then sensing unit 410, control unit 420 and backlight driving unit
430 re-start aforesaid operations, until the white point chromaticity coordinates value of the liquid crystal panel 100 sensed and predetermined white point chromaticity coordinates value
(i.e. the good white point chromaticity coordinates value of Theoretical Design) is identical.
Fig. 2 is the flow chart of the white point method of adjustment of quantum dot liquid crystal display according to an embodiment of the invention.
Reference picture 2, the white point method of adjustment of quantum dot liquid crystal display according to an embodiment of the invention include step
S210 to step S230.
Specifically, in step S210, during liquid crystal panel 100 shows image, sensed using sensing unit 410
The white point chromaticity coordinates value of liquid crystal panel 100.Here, the white point chromaticity coordinates value sensed is actual white point chromaticity coordinates value, and it has can
Can be identical with predetermined white point chromaticity coordinates value (i.e. the good white point chromaticity coordinates value of Theoretical Design), it is also possible to predetermined white point color
Coordinate value differs.When the two is differed, step S220 and step S230 are continued executing with；When the two is identical, the white point is adjusted
Adjusting method terminates.
In step S220, driving control signal is produced according to the white point chromaticity coordinates value of sensing using control unit 420.
In step S230, the driving electricity of light source 220 is adjusted according to driving control signal using backlight driving unit 430
Stream, to adjust the amount of light of light source 220.
It should be noted that after step S230 has been carried out, if the white point chromaticity coordinates value sensed again with it is predetermined
White point chromaticity coordinates value also differs, then return to step S210, repeats step S210 to step S230, until making what is sensed
The white point chromaticity coordinates value of liquid crystal panel 100 and predetermined white point chromaticity coordinates value (i.e. the good white point chromaticity coordinates value of Theoretical Design) phase
Together.
In summary, according to an embodiment of the invention, there is provided a kind of white point color that can quickly adjust liquid crystal display
The white point adjusting apparatus and white point method of adjustment of coordinate value, without repeatedly measurement adjustment, make again while saving time and cost
Stabilization must be adjusted.
Although the present invention has shown and described with reference to specific embodiment, it should be appreciated by those skilled in the art that：
In the case where not departing from the spirit and scope of the present invention limited by claim and its equivalent, can carry out herein form and
Various change in details.
Claims (10)
- A kind of 1. white point adjusting apparatus of quantum dot liquid crystal display, it is characterised in that including：Sensing unit, the white point chromaticity coordinates value of the liquid crystal panel for sensing the quantum dot liquid crystal display；Control unit, for producing driving control signal according to the white point chromaticity coordinates value of sensing；Backlight driving unit, the light source of the backlight module for adjusting the quantum dot liquid crystal display according to driving control signal Driving current, to adjust the amount of light of the light source so that the white point chromaticity coordinates value of the liquid crystal panel with it is predetermined white Point chromaticity coordinates value is identical.
- 2. white point adjusting apparatus according to claim 1, it is characterised in that the quantum dot of the quantum dot liquid crystal display Including red quantum dot and green quantum dot, the wavelength of the fluorescence peak of the red quantum dot is 635nm, affiliated green quantum dot Wavelength of the fluorescence peak be 535nm.
- 3. white point adjusting apparatus according to claim 2, it is characterised in that the light source is blue-ray LED.
- 4. a kind of white point method of adjustment of quantum dot liquid crystal display, it is characterised in that including step：Sense the white point chromaticity coordinates value of the liquid crystal panel of the quantum dot liquid crystal display；Driving control signal is produced according to the white point chromaticity coordinates value of sensing；The driving current of the light source of the backlight module of the quantum dot liquid crystal display is adjusted according to driving control signal, with adjustment The amount of light of the light source, until making the white point chromaticity coordinates value of the liquid crystal panel identical with predetermined white point chromaticity coordinates value.
- 5. white point method of adjustment according to claim 4, it is characterised in that the quantum dot of the quantum dot liquid crystal display Including red quantum dot and green quantum dot, the wavelength of the fluorescence peak of the red quantum dot is 635nm, affiliated green quantum dot Wavelength of the fluorescence peak be 535nm.
- 6. white point method of adjustment according to claim 5, it is characterised in that the light source is blue-ray LED.
- A kind of 7. quantum dot liquid crystal display, it is characterised in that including：Liquid crystal panel, backlight module, quantum dot device and white point Adjusting apparatus, the liquid crystal panel and the backlight module are oppositely arranged, and the quantum dot device is arranged at the liquid crystal panel Between the backlight module, the light of the backlight module outgoing is supplied to the liquid crystal surface by the quantum dot device Plate；The white point adjusting apparatus is configured to：The white point chromaticity coordinates value of the liquid crystal panel is sensed, according to the white point color of sensing Coordinate value produces driving control signal, and the driving current of the light source of the backlight module is adjusted according to driving control signal, to adjust The amount of light of the whole light source, so that the white point chromaticity coordinates value of the liquid crystal panel is identical with predetermined white point chromaticity coordinates value.
- 8. quantum dot liquid crystal display according to claim 7, it is characterised in that the white point adjusting apparatus includes：Sensing unit, for sensing the white point chromaticity coordinates value of the liquid crystal panel；Control unit, for producing driving control signal according to the white point chromaticity coordinates value of sensing；Backlight driving unit, for adjusting the driving current of the light source according to driving control signal, to adjust the light source Amount of light, so that the white point chromaticity coordinates value of the liquid crystal panel is identical with predetermined white point chromaticity coordinates value.
- 9. the white point adjusting apparatus according to claim 7 or 8, it is characterised in that the quantum dot device includes amount of red Son point and green quantum dot, the wavelength of the fluorescence peak of the red quantum dot is 635nm, the photoluminescence peak of affiliated green quantum dot Wavelength is 535nm.
- 10. white point adjusting apparatus according to claim 9, it is characterised in that the light source is blue-ray LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710606033.4A CN107393483B (en) | 2017-07-24 | 2017-07-24 | Quantum dot liquid crystal display, white dot adjusting device and white dot adjusting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710606033.4A CN107393483B (en) | 2017-07-24 | 2017-07-24 | Quantum dot liquid crystal display, white dot adjusting device and white dot adjusting method thereof |
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| Publication Number | Publication Date |
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| CN107393483A true CN107393483A (en) | 2017-11-24 |
| CN107393483B CN107393483B (en) | 2019-12-31 |
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| CN201710606033.4A Active CN107393483B (en) | 2017-07-24 | 2017-07-24 | Quantum dot liquid crystal display, white dot adjusting device and white dot adjusting method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109507833A (en) * | 2019-01-16 | 2019-03-22 | 四川长虹电器股份有限公司 | The debugging and picture quality regulation method of equipment with low blue light liquid crystal display |
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| CN102376271A (en) * | 2010-07-13 | 2012-03-14 | 苹果公司 | Led selection for white point control in backlight |
| CN104995551A (en) * | 2013-02-08 | 2015-10-21 | 3M创新有限公司 | High color gamut quantum dot display |
| CN105353562A (en) * | 2015-12-14 | 2016-02-24 | 深圳市华星光电技术有限公司 | Quantum dot tube and liquid crystal display device |
| CN105572968A (en) * | 2015-12-22 | 2016-05-11 | 武汉华星光电技术有限公司 | Backlight module, liquid crystal display device and backlight adjusting method of liquid crystal display device |
| CN106782347A (en) * | 2016-12-30 | 2017-05-31 | 深圳众思科技有限公司 | Correct the method and device of LED backlight display white point |
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2017
- 2017-07-24 CN CN201710606033.4A patent/CN107393483B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102376271A (en) * | 2010-07-13 | 2012-03-14 | 苹果公司 | Led selection for white point control in backlight |
| CN104995551A (en) * | 2013-02-08 | 2015-10-21 | 3M创新有限公司 | High color gamut quantum dot display |
| CN105353562A (en) * | 2015-12-14 | 2016-02-24 | 深圳市华星光电技术有限公司 | Quantum dot tube and liquid crystal display device |
| CN105572968A (en) * | 2015-12-22 | 2016-05-11 | 武汉华星光电技术有限公司 | Backlight module, liquid crystal display device and backlight adjusting method of liquid crystal display device |
| CN106782347A (en) * | 2016-12-30 | 2017-05-31 | 深圳众思科技有限公司 | Correct the method and device of LED backlight display white point |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109507833A (en) * | 2019-01-16 | 2019-03-22 | 四川长虹电器股份有限公司 | The debugging and picture quality regulation method of equipment with low blue light liquid crystal display |
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| Publication number | Publication date |
|---|---|
| CN107393483B (en) | 2019-12-31 |
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