Display device based on electrowetting effect to drive liquid droplet movement

A technology for display devices and driving fluids, applied in instruments, optical components, optics, etc., can solve problems such as low color conversion rate, slow response speed, and small viewing angle, and achieve the goals of improving optical efficiency, brightness, and fast response speed Effect

Active Publication Date: 2015-09-09
厦门市为纳光电科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitations of its own principles, liquid crystal displays have disadvantages such as high energy consumption, slow response speed, small viewing angle, low color conversion rate, and low contrast. New technologies are urgently needed to replace them.

Method used

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  • Display device based on electrowetting effect to drive liquid droplet movement
  • Display device based on electrowetting effect to drive liquid droplet movement
  • Display device based on electrowetting effect to drive liquid droplet movement

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Embodiment Construction

[0030]The present invention will be described in detail below with reference to the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited by this.

[0031] The display device based on the electrowetting effect to drive the liquid droplets to move in the present invention is based on the research on nanometer metal grating color filters. For details, please refer to Zhicheng Ye, Jun Zheng, Lindong Guo, and Hanping D.Shieh, Compacttransreflective color filters and polarizers by bi-layer metallic nanowire gratings on flexible substrates, IEEE, Journal of Selected Topics in Quantum Electronics, 10.1109 / JSTQE.2012.2227247, 2012. It can be seen from the article that the wavelength of the transmitted light depends on the surface plasmon resonance of the metal, as shown in the following formula (1).

[0032] k 0 sin ...

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Abstract

A display device for driving liquid drops to move on the basis of an electrowetting effect is characterized by comprising a lower substrate, an electrode plate, a nano-metal grating, a plurality of liquid drops, a super-hydrophobic coating layer, a dielectric layer, an electrode array and an upper substrate in sequence from bottom to top. A cofferdam is added on the periphery between the upper substrate and the lower substrate to form a sealed chamber, the chamber is filled with a second fluid insoluble with the liquid drops, and the single liquid drops in a chamber between the electrode array and the electrode plate which are parallel to each other at least cover two adjacent electrodes of the electrode array. The characteristic that the nano-metal grating is extremely sensitive to changes of the refractive index of an adjacent material is utilized, color filtering is finished by changing the material refractive index, active modulation of transmission and reflection spectrums of the nano-metal grating is achieved, and simultaneously due to the hydrophobic characteristic of the nano-metal grating structure, the electrowetting display modulation contrast and speed can be improved.

Description

technical field [0001] The present invention relates to the field of display technology, in particular, the present invention realizes the movement of micro droplets based on the principle of dielectric wetting, and utilizes the characteristic that the transmission or reflection spectrum of the nano-metal grating changes with the change of the refractive index of the adjacent material. A display device that drives the movement of microdroplets based on the electrowetting effect. Background technique [0002] With the rapid development and application of the information industry centered on computer technology, display technology has become one of the important ways for people to obtain information in modern society. It has been widely used in all aspects of production and people's daily work: from road signs, various signs to TV, mobile phones and computer monitors in daily life, it can be said that without display technology, people's life, study and work cannot be normal. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B26/02
Inventor 孙楠凌叶志成佘轶
Owner 厦门市为纳光电科技有限公司
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