CN110208980A - Liquid crystal display - Google Patents
Liquid crystal display Download PDFInfo
- Publication number
- CN110208980A CN110208980A CN201910397382.9A CN201910397382A CN110208980A CN 110208980 A CN110208980 A CN 110208980A CN 201910397382 A CN201910397382 A CN 201910397382A CN 110208980 A CN110208980 A CN 110208980A
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- China
- Prior art keywords
- liquid crystal
- crystal display
- backlight
- conductive layer
- display according
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Classifications
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- 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Liquid Crystal (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
A kind of liquid crystal display contains reflective electroluminescent material including backlight module, liquid crystal display panel and the dynamic backlight barn door between the backlight module and the liquid crystal display panel, the dynamic backlight barn door.The utility model has the advantages that liquid crystal display provided by the present invention, the dynamic backlight barn door containing reflective electroluminescent material is provided between liquid crystal display panel and backlight module, dynamic contrast is further increased, the utilization rate of backlight module light source is further improved.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of liquid crystal displays.
Background technique
The structure of liquid crystal display includes liquid crystal display panel and backlight module.Liquid crystal display panel itself does not shine, and needs by backlight
The light source that mould group provides, liquid crystal display panel is by driving the orientation of liquid crystal molecule to show image to control the power through light.It is existing
Have under technical conditions, due to the reason of liquid crystal display panel dark-state light leakage, the contrast of liquid crystal display is usually in 1000 magnitudes
Up and down, far below the contrast of self light emittings such as OLED (Organic Light Emitting Diodes).In order to improve the contrast, it improves aobvious
The stereovision for showing picture carries out dynamic regulation to backlight and has become the effective means for improving liquid crystal display and showing quality.
To the method for backlight progress dynamic regulation mainly for down straight aphototropism mode set in existing liquid crystal display, due to its light source
Include usually several mutually arranged LED (light emitting diode) array of source, can be carried on the back by zonal control LED at times
Dynamic backlight is realized in the brightness of optical arrays.However, due to being easy to interfere with each other between each LED light source, so that the area of backlight
Domain dynamic regulation reduced capability, thereby reduces the dynamic contrast of liquid crystal display.Particularly, this method is not particularly suited for
Side entrance back module.
In conclusion existing liquid crystal display, when carrying out dynamic regulation to backlight, due to each LED light source it
Between be easy to interfere with each other so that the regional dynamics regulating power of backlight weakens, thereby reduce the dynamic contrast of liquid crystal display
Degree.
Summary of the invention
The present invention provides a kind of liquid crystal display, effectively can carry out dynamic regulation to backlight, existing to solve
Liquid crystal display, when carrying out dynamic regulation to backlight, due to being easy to interfere with each other between each LED light source, so that backlight
Regional dynamics regulating power weaken, the technical issues of thereby reducing the dynamic contrast of liquid crystal display.
To solve the above problems, technical solution provided by the invention is as follows:
The present invention provides a kind of liquid crystal display, including backlight module, liquid crystal display panel and is located at the backlight mould
Dynamic backlight barn door between group and the liquid crystal display panel, the dynamic backlight barn door contain reflective electroluminescent
Material.
According to one preferred embodiment of the present invention, the dynamic backlight barn door includes electrochromic module and electrochromism
Control module, the electrochromic module include multiple individually controllable electrochromic cells.
According to one preferred embodiment of the present invention, the electrochromic cells include the first glass base being arranged from bottom to top
Plate, the first conductive layer, the second conductive layer and the second glass substrate, be located at first conductive layer and second conductive layer it
Between edge both ends be respectively arranged with spacer, first conductive layer is surrounded with second conductive layer and the spacer
It has been stacked from bottom to top in region D, the region D to electrode layer, electrolyte and electrochromic layer.
According to one preferred embodiment of the present invention, TFT is provided on first glass substrate.
According to one preferred embodiment of the present invention, the material of first conductive layer and second conductive layer is transparent
Conductive oxide film.
According to one preferred embodiment of the present invention, the electrolyte includes at least silver nitrate and copper chloride.
According to one preferred embodiment of the present invention, the electrochromic layer is silver nano-grain electrochomeric films.
According to one preferred embodiment of the present invention, the crystal grain of the silver nano-grain in the silver nano-grain electrochomeric films
Size range is 10~100 nanometers.
According to one preferred embodiment of the present invention, the backlight module is down straight aphototropism mode set or side entrance back mould
Group.
According to one preferred embodiment of the present invention, the down straight aphototropism mode set includes: backboard, is set on the backboard
Multiple light-source structures in array distribution and the side reflector plate of each side of the backboard is set.
The invention has the benefit that liquid crystal display provided by the present invention, in liquid crystal display panel and backlight module
Between be provided with the dynamic backlight barn door containing reflective electroluminescent material, dynamic contrast is further increased, more into one
Step improves the utilization rate of backlight module light source.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of embodiment or technical solution in the prior art
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only some of invention
Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the structural schematic diagram of liquid crystal display of the present invention.
Fig. 2 is the schematic illustration that liquid crystal display of the present invention carries out dynamic regulation to backlight.
Fig. 3 is the structural schematic diagram of the electrochromic cells in liquid crystal display of the present invention.
Specific embodiment
The explanation of following embodiment is referred to the additional illustration, the particular implementation that can be used to implement to illustrate the present invention
Example.The direction term that the present invention is previously mentioned, such as [on], [under], [preceding], [rear], [left side], [right side], [interior], [outer], [side]
Deng being only the direction with reference to annexed drawings.Therefore, the direction term used be to illustrate and understand the present invention, rather than to
The limitation present invention.The similar unit of structure is with being given the same reference numerals in the figure.
The present invention for existing liquid crystal display to backlight carry out dynamic regulation when, due to each LED light source it
Between be easy to interfere with each other so that the regional dynamics regulating power of backlight weakens, thereby reduce the dynamic contrast of liquid crystal display
The technical issues of spending, the present embodiment are able to solve the defect.
As shown in Figure 1, being the structural schematic diagram of liquid crystal display of the present invention.Wherein, liquid crystal display of the invention includes
Backlight module 10, liquid crystal display panel 30 and the dynamic between the backlight module 10 and the liquid crystal display panel 30
Backlight barn door 20, the dynamic backlight barn door 20 contain reflective electroluminescent material.
The reflective electroluminescent material refer to the optical properties of material stablize under the action of extra electric field, can
The phenomenon that inversion, shows as the reversible change of color and transparency in appearance.The change of the reflective electroluminescent material
Color mechanism is that redox reaction occurs under electric drive, and the controllable adjustment of transmitance is mainly realized by the absorption to light.Make
When for dynamic backlight, since light is absorbed, the utilization efficiency of backlight is not high, and not to the effect of dynamic contrast raising
Obviously.
Specifically, the dynamic backlight barn door 20 includes electrochromic module 21 and electrochromism control module 22,
The electrochromic module 21 includes multiple individually controllable electrochromic cells 211；The electrochromism control module 22 is logical
After the luminance information for analyzing the display of the liquid crystal display panel 30 picture different zones in real time, adjusted in real time according to the luminance information
The light transmission rate of the electrochromic cells 211 of corresponding region realizes dynamic backlight, improves contrast.
Specifically, the backlight module 10 is down straight aphototropism mode set or side entrance back module；The downward back
Optical mode group 10 includes: backboard, the multiple light-source structures and setting in array distribution being set on the backboard described
The side reflector plate of each side of backboard.
As shown in Fig. 2, the schematic illustration of dynamic regulation is carried out to backlight for liquid crystal display of the present invention.Wherein, institute
Liquid crystal display panel 30 is stated in the different picture of display light and shade, includes gloomy in the display area of the liquid crystal display panel 30
Region and light and shade region.It is described dynamic when the light source that the backlight module 10 issues passes through the dynamic backlight barn door 20
The electrochromism control module 22 in state backlight barn door 20 is to the electrochromism in the electrochromic module 21
Unit 211 applies certain voltage, penetrates the backlight of the corresponding part in the dark area dynamic backlight barn door 20
Rate reduces, and the dynamic backlight barn door 20 reflects impervious part light by the backlight module 10, and passes through institute
The reflecting plate for stating backlight module 10 collects later further reflection, on the one hand can reinforce the brightness of the bright areas, into one
Step improves dynamic contrast, while improving the utilization rate of the light source of the backlight module 10.
As shown in figure 3, for the structural schematic diagram of the electrochromic cells in liquid crystal display of the present invention.Wherein, the electricity
Mutagens color element includes the first glass substrate 401 being arranged from bottom to top, the first conductive layer 402, the second conductive layer 403 and
Two glass substrates 404, the edge both ends between first conductive layer 402 and second conductive layer 403 are respectively set
There is spacer 405, first conductive layer 402 surrounds region D, institute with second conductive layer 403 and the spacer 405
It states and has been stacked from bottom to top in the D of region to electrode layer 406, electrolyte 407 and electrochromic layer 408.
Specifically, being provided with TFT (thin film transistor (TFT)) on first glass substrate 401.
Specifically, the material of first conductive layer 402 and second conductive layer 403 is transparent conductive oxide
Film.
Specifically, the electrolyte 407 includes at least silver nitrate and copper chloride.
Specifically, the electrochromic layer 408 is silver nano-grain electrochomeric films；The electroluminescent change of silver nano-grain
The grain size range of silver nano-grain in color film is 10~100 nanometers.
When the liquid crystal display panel region is shown as bright scene, do not apply voltage, the electrochromic layer 408
It does not react, the dynamic backlight barn door 20 keeps penetrating state.
When the liquid crystal display panel region is shown as gloomy picture, under voltage control, the electrochromic layer
408 can occur local surface plasma resonance electrochromic effect, and transmitance can occur controllably to reduce, and reduce dark area
Backlight transmitance；Particularly, the light not being through mainly reflected, can by the reflecting plate of the backlight module collect with
Further reflection afterwards, on the one hand can reinforce the bright brightness as region, further increase dynamic contrast, while back can be improved
The utilization rate of the light source of optical mode group.
When the liquid crystal display panel region is shown as black picture under extreme conditions, the electrochromic layer 408
It will form reflecting mirror, by the substantially all reflection of backlight at this, form Very High Contrast.
Liquid crystal display provided by the invention, can when showing the different picture of light and shade, can dynamic regulation backlight, one
Aspect can reinforce the brightness of bright areas, further increase dynamic contrast, while improve the utilization of backlight module light source
Rate.
The invention has the benefit that liquid crystal display provided by the present invention, in liquid crystal display panel and backlight module
Between be provided with the dynamic backlight barn door containing reflective electroluminescent material, dynamic contrast is further increased, more into one
Step improves the utilization rate of backlight module light source.
In conclusion although the present invention has been disclosed above in the preferred embodiment, but above preferred embodiment is not to limit
The system present invention, those skilled in the art can make various changes and profit without departing from the spirit and scope of the present invention
Decorations, therefore protection scope of the present invention subjects to the scope of the claims.
Claims (10)
1. a kind of liquid crystal display, which is characterized in that including backlight module, liquid crystal display panel and be located at the backlight module
Dynamic backlight barn door between the liquid crystal display panel, the dynamic backlight barn door contain reflective electroluminescence material
Material.
2. liquid crystal display according to claim 1, which is characterized in that the dynamic backlight barn door includes electrochromism
Module and electrochromism control module, the electrochromic module include multiple individually controllable electrochromic cells.
3. liquid crystal display according to claim 2, which is characterized in that the electrochromic cells include setting from bottom to top
The first glass substrate, the first conductive layer, the second conductive layer and the second glass substrate set are located at first conductive layer and institute
State the edge both ends between the second conductive layer and be respectively arranged with spacer, first conductive layer and second conductive layer and
The spacer surrounds region D, has been stacked from bottom to top in the region D to electrode layer, electrolyte and electrochromism
Layer.
4. liquid crystal display according to claim 3, which is characterized in that be provided with TFT on first glass substrate.
5. liquid crystal display according to claim 3, which is characterized in that first conductive layer and second conduction
The material of layer is transparent conductive oxide film.
6. liquid crystal display according to claim 3, which is characterized in that the electrolyte includes at least silver nitrate and chlorine
Change copper.
7. liquid crystal display according to claim 3, which is characterized in that the electrochromic layer is that silver nano-grain is electroluminescent
Optically variable films.
8. liquid crystal display according to claim 7, which is characterized in that in the silver nano-grain electrochomeric films
The grain size range of silver nano-grain is 10~100 nanometers.
9. liquid crystal display according to claim 1, which is characterized in that the backlight module be down straight aphototropism mode set or
Person's side entrance back module.
10. liquid crystal display according to claim 9, which is characterized in that the down straight aphototropism mode set include: backboard,
Be set to light-source structure in array distribution of multiple on the backboard and be arranged in each side of the backboard side it is anti-
Penetrate piece.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910397382.9A CN110208980A (en) | 2019-05-14 | 2019-05-14 | Liquid crystal display |
| PCT/CN2019/106994 WO2020228214A1 (en) | 2019-05-14 | 2019-09-20 | Liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910397382.9A CN110208980A (en) | 2019-05-14 | 2019-05-14 | Liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110208980A true CN110208980A (en) | 2019-09-06 |
Family
ID=67787130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910397382.9A Pending CN110208980A (en) | 2019-05-14 | 2019-05-14 | Liquid crystal display |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110208980A (en) |
| WO (1) | WO2020228214A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110908207A (en) * | 2019-11-11 | 2020-03-24 | 深圳市华星光电半导体显示技术有限公司 | Display device and display method thereof |
| WO2020228214A1 (en) * | 2019-05-14 | 2020-11-19 | 深圳市华星光电技术有限公司 | Liquid crystal display |
| CN112991966A (en) * | 2020-04-26 | 2021-06-18 | 重庆康佳光电技术研究院有限公司 | Display back plate, display device and display back plate manufacturing method |
| CN114236811A (en) * | 2021-12-20 | 2022-03-25 | 北京京东方技术开发有限公司 | Reflection type electrochromic material, display device, manufacturing method and driving method |
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| CN104487890A (en) * | 2012-07-23 | 2015-04-01 | 株式会社理光 | An electrochromic device and a method for manufacturing an electrochromic device |
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| CN112991966A (en) * | 2020-04-26 | 2021-06-18 | 重庆康佳光电技术研究院有限公司 | Display back plate, display device and display back plate manufacturing method |
| CN112991966B (en) * | 2020-04-26 | 2022-11-29 | 重庆康佳光电技术研究院有限公司 | Display back plate, display device and display back plate manufacturing method |
| CN114236811A (en) * | 2021-12-20 | 2022-03-25 | 北京京东方技术开发有限公司 | Reflection type electrochromic material, display device, manufacturing method and driving method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020228214A1 (en) | 2020-11-19 |
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| CB02 | Change of applicant information |
Address after: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Applicant after: TCL Huaxing Photoelectric Technology Co.,Ltd. Address before: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Applicant before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |
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