CN104950509A - Liquid crystal display device and antireflection film structure thereof - Google Patents
Liquid crystal display device and antireflection film structure thereof Download PDFInfo
- Publication number
- CN104950509A CN104950509A CN201510377550.XA CN201510377550A CN104950509A CN 104950509 A CN104950509 A CN 104950509A CN 201510377550 A CN201510377550 A CN 201510377550A CN 104950509 A CN104950509 A CN 104950509A
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- liquid crystal
- film
- crystal display
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- color membrane
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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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
- G02B1/113—Anti-reflection coatings using inorganic layer materials only
- G02B1/115—Multilayers
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- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Inorganic Chemistry (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a liquid crystal display device and an antireflection film structure thereof. An antireflection film is arranged above a color film substrate and below an upper polaroid. Three or more layers of sub thin films are a combination of all sub thin films which are directly deposited on the color film substrate through a sputtering or CVD method after or before the color film substrate is formed, optical gradient optimization is formed through material selection and thickness matching of the sub thin films, and the antireflection film has good multiband antireflection effect. According to the antireflection film structure, the overlaid antireflection layers are added to the back face of the color film substrate, the multiband antireflection effect can be achieved, the contrast ratio of liquid crystal display can be improved, and a liquid crystal displayer can maintain high definition under direct sunlight.
Description
Technical field
The present invention relates to a kind of liquid crystal indicator, more specifically, relate to and a kind ofly improve the liquid crystal indicator of optical efficiency with antireflection function.
Background technology
LCDs does not see Chu in order to avoid producing reflection during direct sunlight, all can carry out anti-reflection process to liquid crystal display.Common anti-reflection method has:
Patent 201120225207, increases by a cover plate at liquid crystal display surface, is full of transparent heat sink glue between liquid crystal display and glass, utilizes this transparent colloid, makes incident light scattering, reaches the effect of anti-reflection.Meanwhile, this structure also has heat sinking function to display.
The patent 200510134508.1 of Samsung, proposes to plate one deck MgF2 or SiO2 and one deck TiO2 layer at the lower surface of TFT substrate, can reach antireflecting effect.Thisly utilize quarter-wave interference to disappear mutually principle, the effect reducing reflection can be reached, be widely used in area of solar cell.But individual layer antireflective film can only make the interference of light of certain specific wavelength disappear mutually, can not weaken the light of visible ray all wavelengths.
This patent utilizes lamination antireflection layer technology can realize multiwave antireflection requirement.
Summary of the invention
The present invention relates to a kind of liquid crystal indicator, adopt and increase lamination antireflection layer at the color membrane substrates back side, multiband anti-reflective effect can be reached, improve the contrast of liquid crystal display, make liquid crystal display can keep higher sharpness under the direct projection of sunshine.
For achieving the above object, the invention provides following technical scheme:
An antireflecting film structure for liquid crystal display, is characterized in that:
Antireflecting film is arranged on color membrane substrates, under upper polaroid;
Described more than three layers or three layers sub-films are the combinations of each sub-film utilizing the method for sputtering or CVD directly to deposit on color membrane substrates after forming color membrane substrates or before forming color membrane substrates, by Material selec-tion, the optimization of thickness matching formation optical gradient of sub-film, there is good multiband anti-reflective effect;
As the further scheme of the present invention: described antireflecting film is formed by the sub-pellicular cascade of the three kinds or more in SiNx, TiO2, ZnO, MgF2, Al2O3 or SiO2;
As the further scheme of the present invention: the double-layer reflection reducing coating that described antireflecting film is formed by more than four in SiNx, MgF2, TiO2, Al2O3, SiO2 or ZnO kind sub-film.
A kind of liquid crystal indicator, is characterized in that: comprise backlight, lower polaroid, array base palte, alignment film, liquid crystal, alignment film, color membrane substrates, antireflecting film according to claim 1, upper polaroid from top to bottom successively.
Compared with prior art, the invention has the beneficial effects as follows: the present invention adopts increases lamination antireflection layer at the color membrane substrates back side, multiband anti-reflective effect can be reached, improve the contrast of liquid crystal display, make liquid crystal display can keep higher sharpness under the direct projection of sunshine.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the schematic diagram of rhythmo structure;
Fig. 3 is the schematic diagram of antireflecting film.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1:
For achieving the above object, the invention provides a kind of liquid crystal indicator, comprising backlight 1, lower polaroid 2, array base palte 3, alignment film 4, liquid crystal 5, alignment film 6, color membrane substrates 7, antireflection layer 8, upper polarisation 9 from top to bottom successively.
Wherein antireflection layer 8 is structures of a kind of lamination, it is characterized in that described lamination antireflection layer is arranged on color membrane substrates 7, under upper polaroid 9.This antireflection layer 8 comprises more than three layers or three layers antireflecting films, is formed by the three kinds or more in SiNx, TiO2, ZnO, MgF2, TiO2, Al2O3 or SiO2 film is stacked.As shown in Figure 2,81,82,83 reflection horizon 1, reflection horizon 2, reflection horizon 3 is followed successively by.
This multilayer film is the combination of each sub-film utilizing the method for sputtering or CVD directly to deposit on substrate after forming color membrane substrates 7 or before forming color membrane substrates 7, by Material selec-tion, the optimization of thickness matching formation optical gradient of sub-film, there is good multiband anti-reflective effect.
As shown in Figure 3, when light 1 and light 2 incide lamination reflectance coating, film 83 and film 82 liang of surface reflections can form optical path difference to the principle of antireflecting film, when the thickness d of film 83 meets 2dn=1/2 λ, n is the refractive index of film 83, when two bundle reflecting interference disappear mutually, makes hyporeflexia.The interference that in like manner film 82, film 81 can meet other wavelength by thickness and the control of refractive index disappears mutually, reaches the effect of anti-reflection.
The selection of optimum is a rhythmo structure of SiNx/TiO2/ZnO, and the energy gap of this three is all at more than 3.0eV, less on the emergent light impact of color membrane substrates.When sunshine incides liquid crystal panel, because the refractive index of three increases successively, (refractive index of SiNx can regulate between 1.4 ~ 1.7 according to the ratio of Si:N, the refractive index of TiO2 is 1.8, and the refractive index of ZnO is 2.0), not only can by refracting light incident larger for incident angle to the less state of incident angle, and by regulating thickness, successively the indigo plant in sunshine, green, ruddiness can be perforated through, there is good multiband anti-reflective effect.
Embodiment 2:
Antireflection layer 8 of the present invention comprises more than three layers or three layers antireflecting films composition, except the lamination of 3 layers described in scheme 1, also comprises by more than four in SiNx, MgF2, TiO2, Al2O3, SiO2 or ZnO film kind stepped construction.But the principle of double-layer reflection reducing coating is different from single antireflection film, Presence of an interface between each layer film, there is again the difference of refractive index in the medium on both sides, interface, needs the coupling of selection by membraneous material and thickness, reaches best multiband antireflection optical match.
Claims (4)
1. an antireflecting film structure for liquid crystal display, is characterized in that:
Antireflecting film is arranged on color membrane substrates, under upper polaroid;
Described more than three layers or three layers sub-films are the combinations of each sub-film utilizing the method for sputtering or CVD directly to deposit on color membrane substrates after forming color membrane substrates or before forming color membrane substrates, by Material selec-tion, the optimization of thickness matching formation optical gradient of sub-film, there is good multiband anti-reflective effect.
2. the antireflecting film structure of liquid crystal display according to claim 1, described antireflecting film is formed by the sub-pellicular cascade of the three kinds or more in SiNx, TiO2, ZnO, MgF2, Al2O3 or SiO2.
3. the antireflecting film structure of liquid crystal display according to claim 1, the double-layer reflection reducing coating that described antireflecting film is formed by more than four in SiNx, MgF2, TiO2, Al2O3, SiO2 or ZnO kind sub-film.
4. a liquid crystal indicator, is characterized in that: comprise backlight, lower polaroid, array base palte, alignment film, liquid crystal, alignment film, color membrane substrates, antireflecting film according to claim 1, upper polaroid from top to bottom successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510377550.XA CN104950509A (en) | 2015-06-27 | 2015-06-27 | Liquid crystal display device and antireflection film structure thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510377550.XA CN104950509A (en) | 2015-06-27 | 2015-06-27 | Liquid crystal display device and antireflection film structure thereof |
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| CN104950509A true CN104950509A (en) | 2015-09-30 |
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| CN201510377550.XA Pending CN104950509A (en) | 2015-06-27 | 2015-06-27 | Liquid crystal display device and antireflection film structure thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199777A (en) * | 2016-09-22 | 2016-12-07 | 北京小米移动软件有限公司 | Anti-reflection film, backlight module, display module and electronic equipment |
| WO2017107272A1 (en) * | 2015-12-25 | 2017-06-29 | 武汉华星光电技术有限公司 | Reflective liquid crystal panel and display device |
| CN107976848A (en) * | 2017-12-07 | 2018-05-01 | 深圳市华星光电技术有限公司 | A kind of definite method of liquid crystal display panel and its anti-reflection layer, liquid crystal display |
| JP2021004985A (en) * | 2019-06-26 | 2021-01-14 | 株式会社リコー | Anti-reflection film and method for manufacturing the same, and optical component |
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Application publication date: 20150930 |