A light valve device

A device and light valve technology, applied in the field of light valve devices, can solve the problems of long manufacturing process time and affect the optical performance of the device, and achieve the effect of long service life

Active Publication Date: 2021-01-05
SOUTH CHINA NORMAL UNIVERSITY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The manufacturing process of the spacer takes a long time, which will affect the optical performance of the device

Method used

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  • A light valve device
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] see figure 1 and figure 2 , the direction of incident light and reflected light in the figure represents the viewing direction of the eyes. This embodiment provides a light valve device, including a substrate one 1, a hydrophobic layer 2, a pixel wall 3, a substrate two 4 and a force device arranged in sequence. The force application device includes a pressing piece 8 and a piezoelectric control switch (not shown) linked on the pressing piece 8, and the pressing piece 8 is arranged on the opposite side of the substrate one 1 on the substrate two 4, and the piezoelectric control switch (not shown) The control switch includes a signal input terminal, and controls the degree of deformation of the pressing sheet according to the magnitude of the input voltage of the signal input terminal, so as to generate corresponding pressure on the second substrate 4, and a sealing frame 5 is formed between the first substrate 1 and the second substrate 4 The filling area is filled wi...

Embodiment 2

[0032] see image 3 and Figure 4 , the direction of incident light and reflected light in the figure represents the viewing direction of the eyes. This embodiment provides a light valve device, including a substrate one 1, a force application device 8, a hydrophobic layer 2, a pixel wall 3 and a substrate two 4 arranged in sequence, so that A filling area is formed between the first substrate 1 and the second substrate 4, and the filling area is filled with ink 6 and liquid two 7, the liquid two 7 and the ink 6 are incompatible with each other, and the force applying device 8 is a deformable film, which is deformed after the voltage is connected, and exerts pressure on the hydrophobic layer 2 in contact with it through its own deformation, thereby causing a certain pressure on the liquid in the filling area, and the liquid filled in the filling area is subjected to Squeeze, the liquid 2 7 with high viscosity squeezes the ink 6 to a corner, and light passes through the substr...

Embodiment 3

[0036] This embodiment provides a light valve device, which is the same as Embodiment 1, except that the liquid filled in the filling area is a polyether compound such as polydodecyl ether, polyethylene glycol ether, and the like.

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Abstract

The invention discloses a light valve device. The light valve device comprises a force application device which acts a pressure on an object which makes contact with the force application device, certain pressure is generated for a liquid in a filling area, printing ink in the filling area is deformed and pushed to one side, and light passes; after that the pressure is removed; the printing ink recovers to a spreading state, and light cannot pass a substrate; an aperture ratio of the printing ink is controlled according to the magnitude of the pressure acted by force application device, and opening and closing of the light valve device is controlled. According to the light valve device, an electric field needs not to be applied in the device, it is not required to coat an insulating layer,the device is not damaged due to current breakdown, addition of spacers is not needed, and the service life is long.

Description

technical field [0001] The invention relates to the display field, in particular to a light valve device. Background technique [0002] At present, light valve display switches such as liquid crystal display, electrowetting display, electrophoretic display, etc., mainly use the principle of electric field drive, and use the electric field to control the flipping or movement of molecules or microfluids in the display switch device, so as to control the light to pass or close. state to achieve the purpose of display. The principle of electrowetting light valve switch is to use the electric field to change the surface properties of the hydrophobic layer, thereby changing the contact angle of the water layer on the hydrophobic layer, pushing the ink away, and allowing light to pass through. After removing the electric field, the ink layer returns to a spread state, and light cannot pass through. The image is displayed by controlling the electrowetting process through an electr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B26/00
CPCG02B26/005
Inventor 郭媛媛周国富
Owner SOUTH CHINA NORMAL UNIVERSITY
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