Fast rising time light valve and its control method
A technology of light valve and time, which is applied in optics, nonlinear optics, instruments, etc., can solve the problems of slow light valve adjustment speed and reduced life of liquid crystal box, and achieve the effect of improving rising response time and prolonging service life
Inactive Publication Date: 2009-05-06
赵勤
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Problems solved by technology
However, the adjustment speed of the light valve is still slow, and the long-term loading of its electrodes will greatly reduce the life of the liquid crystal cell.
Method used
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Embodiment 1
[0025] see figure 1 (What this figure shows is a cross-sectional view), the fast rise time light valve of the present invention has a box structure, and the box structure has four sealing frames 5, and the top and bottom of the box structure are symmetrically provided with transparent substrates 2 and 9, the transparent substrate can be made of materials such as glass, plastic plate (or film), the outside of the transparent substrate is provided with polarizers 1 and 10, the inside of the transparent substrate is provided with transparent conductive electrodes 3 and 8, the transparent substrate The transparent conductive electrode is generally indium tin oxide, and its shape is made according to needs. It can be a single graphic in general direct drive, or other more complex graphics. Surface alignment layers 4 and 7 are provided on the transparent conductive electrode, and the surface alignment layers are generally realized by evaporation of polyimide or silicon oxide. Its ...
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The invention relates to a short-rise time light valve and the control method thereof. And it has a box structural body whose top and bottom are symmetrically provided with transparent substrates, where light polarizing plates are arranged outside the transparent substrates and transparent conductive electrodes are arranged inside the transparent substrates, the transparent conductive electrodes are provided with surface oriented layer, and the box structural body is full of nematic phase liquid crystal. And the invention uses a new drive waveform to make directional vector of nematic phase liquid crystal molecules being in a preset state so as to make the liquid crystal molecules generate an induced dipole moment under the action of a preset electric field, where the induced dipole moment makes an as small included angle as possible with the electric field (but the liquid crystal can not enter in electro-nematic phase), and then adding a stronger electric field to make moment of liquid crystal molecules larger so as to make the liquid crystal molecules faster enter in the electro-nematic phase.
Description
technical field [0001] The invention relates to a fast rising time light valve and its control method, which can make the liquid crystal box move quickly and prolong the service life of the liquid crystal. Background technique [0002] Chinese patent 93240478.3 discloses a kind of driver's all-weather liquid crystal goggles, is made up of liquid crystal light valve lens, photoelectric probe, photoelectric controller and spectacle frame etc. When the external light intensity changes, it will automatically and quickly (within one tenth to one hundredth of a second) adjust the light transmittance of the liquid crystal light valve, so that the normal light is unblocked, the strong light is blocked, and the human eye is always in the best and brightest state. Perfect, soft visual state, to achieve the purpose of eye protection, safety and comfort, it is the ideal day, night, all-weather eye protection labor protection products for drivers. However, the adjustment speed of the li...
Claims
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IPC IPC(8): G02F1/1335G02F1/1343G02F1/133G09G3/36
Inventor 高建谧张志坚李裕宽
Owner 赵勤