CN103744237A - Central point electrode extraction type nematic-phase self-adaptive liquid crystal lens - Google Patents
Central point electrode extraction type nematic-phase self-adaptive liquid crystal lens Download PDFInfo
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- CN103744237A CN103744237A CN201410026923.4A CN201410026923A CN103744237A CN 103744237 A CN103744237 A CN 103744237A CN 201410026923 A CN201410026923 A CN 201410026923A CN 103744237 A CN103744237 A CN 103744237A
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Abstract
The invention provides a central point electrode extraction type nematic-phase self-adaptive liquid crystal lens. The central point electrode extraction type nematic-phase self-adaptive liquid crystal lens comprises a front substrate, a rear substrate, and a liquid crystal layer arranged between the two layers of substrates, wherein the front substrate is composed of a front glass base, a small-hole layer and a front substrate oriented layer fitted on the small-hole layer; the rear substrate is composed of a rear glass base, a common electrode layer and a rear substrate oriented layer fitted on the common electrode layer; a liner material is arranged between the front substrate and the rear substrate; a central electrode is extracted from the center of the small hole of a round hole type lens and a pixel electrode is arranged at the outer circle of the small hole; ideal electrical field distribution can be obtained through optimization according to the amplitude and the frequency of voltage on the pixel electrode and the central point extraction electrode and the magnitude of the square resistance of a high resistance layer on the small hole, and as a result, approximate parabolic distribution of the birefringence difference delta n of the liquid crystal can be obtained; and therefore, the lens has excellent focusing imaging effect, and the characteristics of the liquid crystal lens from which the central electrode is extracted, in particular a lens with an aperture size, are remarkably improved.
Description
Technical field
The present invention relates to liquid crystal lens field, especially a kind of central point electrode is drawn type nematic phase self-adaptation liquid crystal lens.
Background technology
The advantages such as it is little that self-adaptation liquid crystal lens has volume, lightweight, and power consumption is little, its feature that realizes adjustable focal length without mechanical part shows exclusive advantage.Through development in recent years, liquid crystal Zoom lens and array have great potential using value in various fields such as optical communication device, fiber switch, light deflector part, 3D demonstration, integrated image system and image processing.For current the most frequently used circular hole liquid crystal lens, the in the situation that of only very little in aperture, just can present good lens effect.The in the situation that of large in aperture, lens effect is difficult to reach ideal situation.Design and a kind ofly can in the situation of large aperture, realize the lens of good lens effect, can further widen the application in this field.
Summary of the invention
Goal of the invention: in order to solve the problem that large aperture liquid crystal lens is out of focus, lens contour is bad, the invention provides a kind of central point electrode and draw type nematic phase self-adaptation liquid crystal lens, can make liquid crystal lens in wide-aperture situation, realize good lens effect, solve the deficiencies in the prior art.
Technical scheme: a kind of central point electrode is drawn type nematic phase self-adaptation liquid crystal lens, comprises the liquid crystal layer between prebasal plate, metacoxal plate and two-layer substrate; Prebasal plate is front substrate glasses, aperture layer and is fitted in the prebasal plate oriented layer on aperture layer; Metacoxal plate is rear substrate glasses, common electrode layer and is fitted in the metacoxal plate oriented layer in common electrode layer; Prebasal plate and metacoxal plate have a wadding;
Aperture layer comprises one deck pixel electrode, has one group of through hole on pixel electrode, and the center arrangement of each through hole has central electrode; This central electrode external diameter is less than through hole internal diameter;
Between common electrode layer and pixel electrode, be applied with edge voltage; Between common electrode layer and central electrode, be applied with center voltage, edge voltage is identical with center voltage frequency, and edge voltage magnitude is higher than center voltage.
Between pixel electrode and central electrode, there is resistive formation.Resistive formation is ito thin film or ZnO film.When the aperture of lens is large, resistive formation can play the effect that regulates lens performance.
Wherein, substrate glasses thickness is 0.2mm～3mm.
The amplitude of center voltage is less than or equal to the threshold voltage of liquid crystal.
Beneficial effect:
1, on central electrode, apply voltage, amplitude and frequency by regulation voltage, can obtain good lens effect;
2, the present invention adopts ITO or ZnO as the resistive formation of liquid crystal lens, make the parameter of resistive formation controlled, and preparation cost is low, can be compatible mutually with existing coating process;
3, process is simple, relatively traditional self-adaptation liquid crystal lens, and the scope of application is wider.
Accompanying drawing explanation
Fig. 1 is lens profile figure
Lens profile figure when Fig. 2 is large aperture
Embodiment
Below in conjunction with accompanying drawing, the present invention is done further and explained.
As shown in Figure 1, a kind of central point electrode is drawn type nematic phase self-adaptation liquid crystal lens, comprises the liquid crystal layer 2 between prebasal plate, metacoxal plate and two-layer substrate; Prebasal plate is front substrate glasses 1-1, aperture layer and is fitted in the prebasal plate oriented layer 8-1 on aperture layer; Metacoxal plate is rear substrate glasses 1-2, common electrode layer 5 and is fitted in the metacoxal plate oriented layer 8-2 in common electrode layer 5; Prebasal plate and metacoxal plate have a wadding 6; Substrate glasses thickness is 0.2mm～3mm.The thickness of prebasal plate oriented layer 8-1 and metacoxal plate oriented layer 8-2 is 100nm-1um.
Innovative point of the present invention is, aperture layer comprises one deck pixel electrode 3, has one group of through hole on pixel electrode 3, and the center arrangement of each through hole has central electrode 4; These central electrode 4 external diameters are much smaller than the internal diameter of through hole, and the external diameter that is specially central electrode 4 should be less than 1/10 of through hole internal diameter;
Between common electrode layer 5 and pixel electrode 3, be applied with edge voltage U1; Between common electrode layer 5 and central electrode 4, be applied with center voltage U2, edge voltage U1 is identical with center voltage U2 frequency, and the amplitude of center voltage U2 is identical with the threshold voltage of liquid crystal.
Front-back baseboard is carried out respectively to friction orientation, and the frictional direction of front-back baseboard is parallel or antiparallel, adopts conventional liquid crystal gasket material as sark 6, to fill as glass bar and glass pellet etc., and pours into nematic liquid crystal.
For circular hole liquid crystal lens, when aperture is larger, due to fringing field effect, aperture center does not have electromotive force in region greatly.At pixel electrode 3, apply edge voltage U1, after aperture center is drawn a central electrode 4 and is applied the alternating voltage U2 that an amplitude equates with the threshold voltage of liquid crystal, the amplitude of edge voltage U1 is higher than center voltage U2, both frequencies are identical, whole aperture surface all can have electromotive force, and the threshold voltage that all surpasses liquid crystal, so just makes all liquid crystal molecules that corresponding deflection can occur.Regulate again the amplitude size that is applied to the voltage on pixel electrode just can obtain good lens effect.
As shown in Figure 2, when the internal diameter of aperture is very large (hole diameter is greater than 1mm), between pixel electrode 3 and central electrode 4, be furnished with resistive formation 7, the preferred ito thin film of this resistive formation 7 or ZnO film, can play the effect of adjustable liquid crystal display lens performance.Be specially at central electrode 4 and apply an amplitude V
2exchange centre's voltage U 2 that, frequency f 2 identical with the threshold voltage of liquid crystal is identical with being applied to the frequency f 1 that exchanges edge voltage U1 on pixel electrode 3, the restriction of edge voltage U 1 and center voltage U2 amplitude just can make the Potential Distributing of orifice surface more level off to parabolic distribution, makes liquid crystal lens present better lens effect.Meanwhile, adopt ito thin film or ZnO film as resistive formation, can obtain simple ripe, the controlled resistive formation of sheet resistance of preparation technology, make it amplitude and frequency in conjunction with voltage, optimize the characteristic of liquid crystal lens.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. central point electrode is drawn a type nematic phase self-adaptation liquid crystal lens, comprises the liquid crystal layer (2) between prebasal plate, metacoxal plate and two-layer substrate; Prebasal plate is front substrate glasses (1-1), aperture layer and is fitted in the prebasal plate oriented layer (8-1) on aperture layer; Metacoxal plate is rear substrate glasses (1-2), common electrode layer (5) and is fitted in the metacoxal plate oriented layer (8-2) in common electrode layer (5); Prebasal plate and metacoxal plate have a wadding (6);
It is characterized in that, described aperture layer comprises one deck pixel electrode (3), has one group of through hole on pixel electrode (3), and the center arrangement of each through hole has central electrode (4); This central electrode (4) external diameter is less than through hole internal diameter;
Between common electrode layer (5) and pixel electrode (3), be applied with edge voltage (U1); Between common electrode layer (5) and central electrode (4), be applied with center voltage (U2), edge voltage (U1) is identical with center voltage (U2) frequency, and edge voltage (U1) amplitude is higher than center voltage (U2).
2. a kind of central point electrode as claimed in claim 1 is drawn type nematic phase self-adaptation liquid crystal lens, it is characterized in that, between described pixel electrode (3) and central electrode (4), has resistive formation (7).
3. a kind of central point electrode as claimed in claim 2 is drawn type nematic phase self-adaptation liquid crystal lens, it is characterized in that, described resistive formation (7) is ito thin film or ZnO film.
4. a kind of central point electrode as claimed in claim 1 is drawn type nematic phase self-adaptation liquid crystal lens, it is characterized in that, described substrate glasses thickness is 0.2mm～3mm.
5. a kind of central point electrode as claimed in claim 1 is drawn type nematic phase self-adaptation liquid crystal lens, it is characterized in that, the amplitude of described center voltage (U2) is less than or equal to the threshold voltage of liquid crystal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410026923.4A CN103744237A (en) | 2014-01-21 | 2014-01-21 | Central point electrode extraction type nematic-phase self-adaptive liquid crystal lens |
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| CN201410026923.4A CN103744237A (en) | 2014-01-21 | 2014-01-21 | Central point electrode extraction type nematic-phase self-adaptive liquid crystal lens |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842888A (en) * | 2016-05-31 | 2016-08-10 | 成都微晶景泰科技有限公司 | Quick focusing optical element and imaging device |
| CN109613764A (en) * | 2019-01-24 | 2019-04-12 | 南京奥谱依电子科技有限公司 | Single-chip integration electrically-controlled liquid crystal bimodulus micro mirror, preparation method and optical microscopy |
| CN109856422A (en) * | 2019-02-19 | 2019-06-07 | 成都京东方光电科技有限公司 | Acceleration transducer, acceleration measurement device and method |
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| JP4425779B2 (en) * | 2004-12-27 | 2010-03-03 | シャープ株式会社 | Exposure equipment |
| KR20120017308A (en) * | 2010-08-18 | 2012-02-28 | 엘지디스플레이 주식회사 | Image display device including liquid crystal lens and method of driving the same |
| CN103293819A (en) * | 2013-05-09 | 2013-09-11 | 赵耘轩 | Electrically-controlled liquid crystal lens and three-dimensional stereoscopic display device thereof |
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2014
- 2014-01-21 CN CN201410026923.4A patent/CN103744237A/en active Pending
Patent Citations (3)
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| JP4425779B2 (en) * | 2004-12-27 | 2010-03-03 | シャープ株式会社 | Exposure equipment |
| KR20120017308A (en) * | 2010-08-18 | 2012-02-28 | 엘지디스플레이 주식회사 | Image display device including liquid crystal lens and method of driving the same |
| CN103293819A (en) * | 2013-05-09 | 2013-09-11 | 赵耘轩 | Electrically-controlled liquid crystal lens and three-dimensional stereoscopic display device thereof |
Non-Patent Citations (2)
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| 李晖等: "一种新型液晶透镜的光学成像特性研究", 《红外与毫米波学报》, vol. 28, no. 6, 31 December 2009 (2009-12-31) * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842888A (en) * | 2016-05-31 | 2016-08-10 | 成都微晶景泰科技有限公司 | Quick focusing optical element and imaging device |
| CN109613764A (en) * | 2019-01-24 | 2019-04-12 | 南京奥谱依电子科技有限公司 | Single-chip integration electrically-controlled liquid crystal bimodulus micro mirror, preparation method and optical microscopy |
| CN109856422A (en) * | 2019-02-19 | 2019-06-07 | 成都京东方光电科技有限公司 | Acceleration transducer, acceleration measurement device and method |
| CN109856422B (en) * | 2019-02-19 | 2022-03-22 | 成都京东方光电科技有限公司 | Acceleration sensor, acceleration measuring device and method |
| US11506680B2 (en) | 2019-02-19 | 2022-11-22 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Speed sensor, device for measuring speed and method thereof |
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