Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Display devices based on phase change materials

A technology of phase-change materials and display devices, which is applied in the direction of instruments, electrical components, optical components, etc., can solve the problems of high energy consumption, complicated preparation, lack of color, etc., and achieve the effect of simple manufacturing

Active Publication Date: 2019-03-05
OXFORD UNIV INNOVATION LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some display technologies, such as backlit color displays, have relatively high energy consumption and are complex to manufacture
Different technologies provide non-backlit black and white displays, but have slower switching speeds, cannot display video footage, and of course lack color
Other technologies require high drive voltages that are not easy to generate and tend to have high energy consumption
With all of these technologies, there is also the problem of producing high-resolution displays

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Display devices based on phase change materials
  • Display devices based on phase change materials
  • Display devices based on phase change materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] will refer to figure 1 An embodiment of a display device, which shows a layered structure in cross-section, will be described. Portions 10 of solid material are arranged in layers. The material of this layer has a refractive index that can be changed permanently and reversibly by applying an appropriate voltage. Such materials, known as phase change materials (PCMs), undergo dramatic changes in both real and imaginary indices of refraction when transitioning between amorphous and crystalline phases. In a preferred embodiment, the material is Ge 2 Sb 2 Te 5 (GST).

[0024] The portion 10 of material is disposed on a reflector 12, wherein in this embodiment the reflector 12 is a layer of metal such as platinum or aluminium. A spacer layer 14 is sandwiched between the material 10 and the reflector 12 . A cover layer 16 is disposed on top of the material layer 10 . In this particular embodiment, the upper surface 18 of the cover layer 16 constitutes the viewing surf...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to View More

Abstract

A display device comprising a plurality of pixels each having a portion (10) of a solid state phase change material, such as germanium-antimony-tellurium (GST) or vanadium dioxide, wherein the phase change material Reversibly enters amorphous or crystalline state and has a reversibly electrically controlled refractive index. A plurality of electrodes (14, 16) are provided, at least two of which are in contact with said portion (10) of material. A controller (19) is provided adapted to apply at least one voltage to said material (10) via said electrodes (14, 16) to change said refractive index. Arrays of portions of this material can be arranged to make pixelated displays, eg, volumetric stereoscopic displays.

Description

technical field [0001] The invention relates to a display device. Background technique [0002] Display technology has made considerable progress, for example in the field of portable computing and communication devices. Some display technologies, such as backlit color displays, have relatively high energy consumption and are complex to manufacture. Different technologies provide non-backlit black and white displays, but have slower switching speeds, cannot display video footage, and of course lack color. Other technologies require high drive voltages that are not easy to generate, and tend to have high energy consumption. With all of these technologies, there is also the problem of producing high resolution displays. Contents of the invention [0003] The present invention has been made in view of the above problems. [0004] Therefore, the present invention provides a display device, comprising: [0005] multiple electrodes; [0006] a portion of a solid state mate...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/01G02F1/19G02B27/22
CPCG02F1/0147G02F2203/34G02F1/19G02F1/0105G02F1/0107G02B30/52H10N70/231
Inventor 哈里什·巴斯卡兰培曼·胡赛尼
Owner OXFORD UNIV INNOVATION LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com