ELECTROCHROMIC DISPLAY ELEMENT AND METHOD FOR PRODUCING ELECTROCHROMIC DISPLAY ELEMENT

• Main Authors: TAKAHASHI, Hiroyuki, URA, Naoki
• Format: Patent
• Language: English; French; German
• Published: 28.09.2022
• Subjects: ADHESIVES; CHEMISTRY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DYES; FREQUENCY-CHANGING; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PAINTS; PHYSICS; POLISHES; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

Provided is an electrochromic display element (21) including a first substrate (11), a first electrode (13) over the first substrate (11), a first electrochromic layer (15) over the first electrode (13), an electrolyte layer (17) over the first electrochromic layer (15), a second electrode (14) over the electrolyte layer (17), and a second substrate (12) over the second electrode (14). The first electrochromic layer (15) contains tin oxide having an average primary particle diameter of less than 30 nm and an electrochromic compound containing a functional group bindable to the tin oxide. The amount by mole of the electrochromic compound per area of the first electrochromic layer (15) is from 2.0×10-8 mol/cm2 through 2.0×10-7 mol/cm2.