Dual active film electrochromic display device

一种致色、电活化的技术，应用在仪器、非线性光学、光学等方向，能够解决显示装置不是特别合适、不允许多色状态和透射状态转换、控制大量的颜色等问题

Inactive Publication Date: 2011-03-02
UNIV OF FLORIDA RES FOUNDATION INC
View PDF1 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although conjugated conducting polymers offer a large color palette in addition to the transmissive state, the displayed colors in electrochromic devices combining these polymers are generally limited to two states, and it is currently not possible to systematically control a large number of colors.
Given the simultaneous switching of cathodically and anodically colored polymers in additive color combinations in absorbing / transmitting electrochromic devices, many of the currently displayed colors are not particularly suitable for display devices
Additionally, current devices generally do not allow switching between the multicolor state and the transmissive state
Such color control is even more unavailable for reflective devices where only the color of a single electroactive polymer is available

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
  • Dual active film electrochromic display device
  • Dual active film electrochromic display device
  • Dual active film electrochromic display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] Embodiments of the present invention relate to electrochromic display devices that, in addition to the transmissive state, can display multicolor states that can be applied independently to a working electrode coated with different electroactive materials and to one or more coated electrodes. Potential control between counter electrodes of active materials such as redox active materials. The optical contrast of the device does not require the inclusion of a cathodically coloring polymer and its counterpart anodically coloring polymer. Additionally the novel display device provides visually pleasing additive color combinations. The devices of the present invention utilize a plurality of active working electrodes coated with an electrochromic material, typically an electroactive conjugated polymer, the electrodes having a common counter electrode. The working electrodes are independently controlled and switched to allow multiple color states of the device. The device ma...

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
visible light transmittanceaaaaaaaaaa
Login to view more

Abstract

A dual active electrochromic device is a combination of at least two working electrodes that contain electrochromic materials and at least one counter electrode where the potentials between each working electrode and a counter electrode are independently supplied. No more than one electrode is reflective. The color of the device results from the additive color of the electrochromic materials and varies according to the potentials applied independently. The electrochromic materials can be electrochromic polymers that are deposited as film on substrates to form the working electrodes. The electrochromic device can be used for display or window applications.

Description

Background technique [0001] Electrochromism is a color change of a material caused by an electrochemical oxidation or reduction reaction. Some electrochromic materials switch reproducibly between chromatic and achromatic states, while others exhibit polychromatic states. Conjugated electroactive polymers are electrochromic materials in which the achievable colors span the entire visible region of the electromagnetic spectrum. In addition, the polymers have electrochromic activation beyond the visible in the ultraviolet, near-infrared, far-infrared and microwave regions of the spectrum. The electrochromism of conjugated electroactive polymers arises from electronic transitions in neutral polymers and those generated during oxidation or reduction. The color of the neutral state of a polymer is determined by the energy difference between the highest occupied molecular orbital (HOMO) making up the valence band and the lowest unoccupied molecular orbital (LUMO) making up the cond...

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 Applications(China)
IPC IPC(8): G02F1/15G02F1/153G02F1/1503
CPCG02F1/1521G02F2001/1555G02F1/155G02F1/15G02F2001/1552G02F2001/1515G02F1/15165G02F1/1503
Inventor J·R·雷诺兹A·L·戴尔E·乌努尔
Owner UNIV OF FLORIDA RES FOUNDATION INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap