CN103995383A - Liquid crystal light valve for electric welding goggles - Google Patents
Liquid crystal light valve for electric welding goggles Download PDFInfo
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- CN103995383A CN103995383A CN201410164749.XA CN201410164749A CN103995383A CN 103995383 A CN103995383 A CN 103995383A CN 201410164749 A CN201410164749 A CN 201410164749A CN 103995383 A CN103995383 A CN 103995383A
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- liquid crystal
- light valve
- crystal display
- crystal light
- welder
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Abstract
A liquid crystal light valve for a pair of electric welding goggles is composed of a plurality of overlapping liquid crystal displays. When each liquid crystal display is manufactured, the inner sides of two parallel ITO glass substrates are filled with liquid crystal materials, and polaroids are attached to the outer sides of the ITO glass substrates. The product of the refractive index anisotropy deltaN of the liquid crystal materials and the thickness D of a box of the liquid crystal displays is smaller than or equal to 0.35 micrometer, and the torque angle of the liquid crystal displays is designed within the range of 80 degrees to 87 degrees. By optimizing and selecting structures and materials of the liquid crystal displays, the view angle is expanded, diffusion is reduced, uniformity of the product is improved, four indexes all reach the first level, and the application range of the product is greatly enlarged.
Description
Technical field
The present invention relates to a kind of liquid crystal light valve that is applicable to Eye protector for welder, belong to optical technical field.
Background technology
Eye protector for welder belongs to human eye safety appliance, mainly contains four basic optical indexes: bright state homogeneity, diffusion, blackness homogeneity and dependence of angle, each optical index is divided into four grades: 1 grade, 2 grades, 3 grades and defective.At present, while adopting liquid crystal light valve to manufacture Eye protector for welder, liquid crystal light valve can have various structures, as TN type liquid crystal display (twisted nematic, twist angle 90 degree), HTN type liquid crystal display (high twist nematic phase, 110 ° of twist angles, 180 °), STN type liquid crystal display (supertwist nematic phase, 220 ° of twist angles, 270 °) etc., but four basic optical indexs of available liquid crystal light valve type Eye protector for welder generally can not reach one-level simultaneously.If this index of dependence of angle is wherein accomplished to one-level, need to use EWV compensate film to widen visual angle, and this EWV film have the effect of dispersing to light, cause diffusion index can not meet the requirement of one-level.This is a kind of way of attending to one thing and lose sight of another, and it can make, and index can not be accomplished better simultaneously, more consistent level, thereby has greatly limited the range of application of liquid crystal light valve formula Eye protector for welder.Therefore, how the structure of liquid crystal light valve and production technology are improved, made its four basic optical indexs reach one-level simultaneously, just become the difficult problem that relevant technologies personnel face.
Summary of the invention
The object of the invention is to the drawback for prior art, a kind of Eye protector for welder liquid crystal light valve is provided, to improve the optical index of liquid crystal light valve formula Eye protector for welder, expand its range of application.
Problem of the present invention realizes with following technical proposals:
A kind of Eye protector for welder liquid crystal light valve, described liquid crystal light valve consists of a plurality of liquid crystal display that are stacked together, each liquid crystal display is at two parallel ITO(tin indium oxides) inner side of glass substrate is filled with liquid crystal material, outside attaching polaroid is made, the refractive index anisotropy △ N of described liquid crystal material and the product≤0.35 μ m of box thickness of LCD D, liquid crystal display twist angle designs at 80 °～87 °.
Above-mentioned Eye protector for welder liquid crystal light valve, the box of described liquid crystal display is thick is 4～5 μ m.
Above-mentioned Eye protector for welder liquid crystal light valve, described liquid crystal display arranges three layers.
The present invention, by the structure of liquid crystal display, material are in optimized selection, is reduced to liquid crystal display refractive index anisotropy (△ N) * box thick (D) below 0.35.Effectively reduce diffusion, adopting box thick is 4-5 μ, improves stack homogeneity.Creatively added the 3rd liquid crystal display to carry out viewing angle compensation simultaneously.Made up the shortcoming that visual angle can not meet one-level, the diffuse properties of not loss simultaneously.The Eye protector for welder of making like this can accomplish that four indices all reaches one-level, has improved the range of application of Eye protector for welder greatly.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 is structural representation of the present invention.
In figure, each label is: 1, ito glass substrate; 2 edge sealing adhesives; 3, liquid crystal material; 4, polaroid.
Embodiment
Referring to Fig. 1, the present invention consists of three layers of liquid crystal display, and each liquid crystal display comprises two parallel ito glass substrates 1 and the liquid crystal material 3 of the two inner side and the polaroid 4 in outside.
The present invention, by optimizing Eye protector for welder by the structure of liquid crystal light valve and adopting special collocation, can make its four basic optical indexes reach one-level (being CE1111) simultaneously.
The present invention has following characteristics:
1. the liquid-crystal refractive-index anisotropy of liquid crystal display (△ N) * box thick (D)≤0.35 μ m;
2. the design of liquid crystal display twist angle is at 80 °～87 °;
3. box thickness of LCD design is at 4-5 μ;
4. adopt 3 liquid crystal display collocation, wherein a slice is used for compensating view angle dependency index.
The present invention is by the rational Δ n*D of collocation, and to change twist angle be 80 °～87 °, can effectively reduce the light diffusion value of liquid crystal light valve.Realize the object of light diffusion index one-level.By three liquid crystal display, superpose, can effective compensation light valve visual angle.While making under not increasing light diffusing situation, dependence of angle reaches the requirement of one-level.
Claims (3)
1. an Eye protector for welder liquid crystal light valve, it is characterized in that, described liquid crystal light valve consists of a plurality of liquid crystal display that are stacked together, each liquid crystal display is to be filled with liquid crystal material (3) in the inner side of two parallel ito glass substrates (1), outside attaching polaroid (4) is made, the refractive index anisotropy △ N of described liquid crystal material (3) and the product≤0.35 μ m of box thickness of LCD D, liquid crystal display twist angle is 80 °～87 °.
2. a kind of Eye protector for welder liquid crystal light valve according to claim 1, is characterized in that, the box of described liquid crystal display is thick is 4-5 μ m.
3. a kind of Eye protector for welder liquid crystal light valve according to claim 1 and 2, is characterized in that, described liquid crystal display arranges three layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410164749.XA CN103995383A (en) | 2014-04-23 | 2014-04-23 | Liquid crystal light valve for electric welding goggles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410164749.XA CN103995383A (en) | 2014-04-23 | 2014-04-23 | Liquid crystal light valve for electric welding goggles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103995383A true CN103995383A (en) | 2014-08-20 |
Family
ID=51309592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410164749.XA Pending CN103995383A (en) | 2014-04-23 | 2014-04-23 | Liquid crystal light valve for electric welding goggles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103995383A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106361495A (en) * | 2016-10-31 | 2017-02-01 | 亚世光电（鞍山）有限公司 | High-class LCD welding goggles |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4398803A (en) * | 1980-06-19 | 1983-08-16 | Merck Patent Gesellschaft Mit Beschrankter Haftung | Liquid crystal display element |
| US4909606A (en) * | 1986-04-22 | 1990-03-20 | Seiko Epson Corporation | Liquid crystal display device |
| WO2004053586A1 (en) * | 2002-12-11 | 2004-06-24 | Optiva, Inc. | Liquid crystal shutter |
| CN201556009U (en) * | 2009-10-27 | 2010-08-18 | 河北冀雅电子有限公司 | Superwide-viewing-angle liquid crystal display (LCD) for electric welding goggles |
| CN102349845A (en) * | 2011-09-05 | 2012-02-15 | 天马微电子股份有限公司 | Electric welding goggles |
| CN102360144A (en) * | 2011-09-05 | 2012-02-22 | 天马微电子股份有限公司 | Electric welding safety goggles |
-
2014
- 2014-04-23 CN CN201410164749.XA patent/CN103995383A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4398803A (en) * | 1980-06-19 | 1983-08-16 | Merck Patent Gesellschaft Mit Beschrankter Haftung | Liquid crystal display element |
| US4909606A (en) * | 1986-04-22 | 1990-03-20 | Seiko Epson Corporation | Liquid crystal display device |
| WO2004053586A1 (en) * | 2002-12-11 | 2004-06-24 | Optiva, Inc. | Liquid crystal shutter |
| CN201556009U (en) * | 2009-10-27 | 2010-08-18 | 河北冀雅电子有限公司 | Superwide-viewing-angle liquid crystal display (LCD) for electric welding goggles |
| CN102349845A (en) * | 2011-09-05 | 2012-02-15 | 天马微电子股份有限公司 | Electric welding goggles |
| CN102360144A (en) * | 2011-09-05 | 2012-02-22 | 天马微电子股份有限公司 | Electric welding safety goggles |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106361495A (en) * | 2016-10-31 | 2017-02-01 | 亚世光电（鞍山）有限公司 | High-class LCD welding goggles |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140820 |
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| RJ01 | Rejection of invention patent application after publication |