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An electronic paper with pixel structure of curved liquid crystal layer

A technology of pixel structure and electronic paper, which is applied in instruments, optics, nonlinear optics, etc. to achieve the effect of high contrast and high display contrast.

Active Publication Date: 2019-03-19
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

but cannot display in color

Method used

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  • An electronic paper with pixel structure of curved liquid crystal layer
  • An electronic paper with pixel structure of curved liquid crystal layer
  • An electronic paper with pixel structure of curved liquid crystal layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The color dot matrix is ​​first printed on the lower substrate, and then hemispherical convex points are printed in gravure above the color dot matrix. The spherical surface of the hemispherical bump has a transparent conductive film, and the surface of the transparent conductive film is coated with PDLC material; the corresponding structure of the upper substrate is a hemispherical concave surface, and the concave surface has a transparent conductive film. The hemispherical concave surface of the upper substrate is combined with the hemispherical bumps of the curved PDLC to form two layers of curved electrode and PDLC interlayer, forming an important structure in the display pixel - curved PDLC, and different control voltages can be applied to the PDLC. The hemispherical concave surface of the upper substrate and the printed color dots on the upper surface of the lower substrate are arranged in a one-to-one corresponding dot matrix array, thereby constituting the electr...

Embodiment 2

[0032] The reverse structure of the upper substrate (such as PET transparent film, polyacetate and other materials can also be used, and softer ones can use polyethylene, PS, etc.) is a hemispherical concave surface (array), and the concave surface has (physical Evaporation) transparent conductive film. Coat the PDLC material on the transparent conductive film on the concave surface, and then make a transparent conductive film (preferably ITO-plated plastic film with a thickness below 0.15mm) on the surface of the PDLC. In this way, a hemispherical cavity with a curved PDLC is formed on the upper substrate. The lower substrate is made of the same material as the upper substrate. Print color dots on its upper surface (dot array, each dot is a pixel unit, and every 1cm× can reach an array of more than 50×50), and paste the upper and lower substrates (colorless and transparent adhesive) to ensure the surface of PDLC. The center point and the color point of the hemispherical cav...

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Abstract

The invention discloses electronic paper of a hook face liquid crystal layer pixel structure. The electronic paper of the hook face liquid crystal layer pixel structure comprises an upper substrate, a hook face PDLC array, a color point array and a lower substrate. The hook face PDLC array corresponds to the color point array. A pixel is composed of the hook face PDLC array and the corresponding color point array. Color points of the pixel are distributed below each hook face PDLC. The PDLC array can change scattering properties under the control of voltage, in other words, the PDLC array can be changed between a scattering state and a transmission state. Colors are displayed by changing the transmission state and scattering state of the hook face PDLC array. The purpose of displaying colors is achieved by changing the transmission state and scattering state of the hook face PDLC array.

Description

1. Technical field [0001] The invention relates to a display method of electronic paper, in particular to a liquid crystal material-based electronic paper pixel structure and method, and belongs to the technical field of information display. 2. Background technology [0002] Electronic paper (E-paper) is a general term for a class of technologies, such non-self-luminous display devices that display information under ambient light. Generally, the display technology that can achieve involuntary light emission like paper, comfortable reading, ultra-thin, lightweight, bendable, and ultra-low power consumption is called electronic paper technology. Most of the current electronic paper uses electrophoresis technology, and some new technologies have emerged, such as electrowetting technology and liquid crystal technology as the basic principles. [0003] At present, there is an electronic ink technology based on cholesteric liquid crystals. Since liquid crystal Braggs with differe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1334
CPCG02F1/1334
Inventor 王元庆徐斌
Owner NANJING UNIV