# US 12,769,174 B2 · Electrochromic sheet, lens for eyeglasses, and eyeglasses > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,769,174 B2 - Document ID: US12769174B2 - Status: Granted - Kind: B2 - Application number: 18/847,499 - Filed: 2023-03-30 - Published: 2025-06-26 - Granted: 2026-10-20 - Earliest claimed: 2022-03-31 - Assignees: Sumitomo Bakelite Co., Ltd. - Applicants: Sumitomo Bakelite Co., Ltd. - Inventors: Satoshi Nishino - Web page: https://patentgrep.com/patent/US12769174B2 ## CPC - G02F 1/155: Electrodes - G02C 7/101: {having an electro-optical light valve (electro-optical elements per se G02F)} - G02F 1/161: Gaskets; Spacers; Sealing of cells; Filling or closing of cells - G02F 1/163: Operation of electrochromic cells, e.g. electrodeposition cells; Circuit arrangements therefor - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS - G02C: SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES (trial frames for testing the eyes A61B3/04; goggles or eyeshields not having the same features as spectacles A61F9/00) ## Abstract The electrochromic sheet includes the electrochromic element; and a lens for eyeglasses, which includes the electrochromic sheet and has excellent reliability, and eyeglasses with excellent productivity. An electrochromic sheet 150 of the present invention includes substrates 11 and 12, a sealing portion 55 disposed therebetween and defining a colored region 70, an electrochromic element 60 disposed in the colored region 70, and a first conductive portion 17 filling a first hole portion 53 and a second conductive portion 18 filling a second hole portion 54, which are formed on an outer side of the sealing portion 55 with respect to the electrochromic element 60, in which the conductive portions 17 and 18 are each exposed at different positions on edge parts of the electrochromic sheet 150. ## Claims ### Claim 1 An electrochromic sheet comprising: a first substrate; a second substrate which is disposed to face the first substrate; a sealing portion which is disposed between the first substrate and the second substrate and defines a colored region exhibiting coloration by application of a voltage; an electrochromic element which is disposed in the colored region; and on an outer side of the sealing portion with respect to the electrochromic element, a first conductive portion which is provided to fill a first hole portion formed from the first substrate side toward the second substrate side, and a second conductive portion which is provided to fill a second hole portion formed from the second substrate side toward the first substrate side, wherein the electrochromic element includes a first electrode and a first electrochromic layer, which are sequentially laminated on the first substrate toward the second substrate side, a second electrode and a second electrochromic layer, which are sequentially laminated on the second substrate toward the first substrate side, and an electrolyte layer which is filled between the first electrochromic layer and the second electrochromic layer, wherein the first electrochromic layer contains, as a main material, a material exhibiting coloration by an oxidation reaction, wherein the second electrochromic layer contains, as a main material, a material exhibiting coloration by a reduction reaction, wherein the first electrode is provided between the first substrate and the sealing portion to the first conductive portion with a patterning that, in a plan view of the electrochromic sheet, the first electrode extends from the colored region and reaches to the first conductive portion to be electrically connected to the first conductive portion, wherein the second electrode is provided between the second substrate and the sealing portion to the second conductive portion with a patterning that, in the plan view of the electrochromic sheet, the second electrode extends from the colored region and reaches to the second conductive portion to be electrically connected to the second conductive portion, and wherein the first conductive portion and the second conductive portion are each exposed at different positions at edge parts along a thickness direction of the electrochromic sheet. ### Claim 2 (depends on 1) The electrochromic sheet according to claim 1, further comprising: in the plan view of the electrochromic sheet, a third conductive portion which is provided to fill a third hole portion formed from the first substrate side toward the second substrate side between the first conductive portion and the electrochromic element, wherein the first electrode is further electrically connected to the third conductive portion. ### Claim 3 (depends on 2) The electrochromic sheet according to claim 2, further comprising: a first auxiliary electrode which is provided between the first electrode and the first conductive portion to the third conductive portion to electrically connect the first electrode to the first conductive portion and the third conductive portion. ### Claim 4 (depends on 2) The electrochromic sheet according to claim 2, wherein the first hole portion and the third hole portion are through-holes penetrating the sealing portion in the thickness direction. ### Claim 5 (depends on 1) The electrochromic sheet according to claim 1, further comprising: in the plan view of the electrochromic sheet, a fourth conductive portion which is provided to fill a fourth hole portion formed from the second substrate side toward the first substrate side between the second conductive portion and the electrochromic element, wherein the second electrode is further electrically connected to the fourth conductive portion. ### Claim 6 (depends on 5) The electrochromic sheet according to claim 5, further comprising: a second auxiliary electrode which is provided between the second electrode and the second conductive portion to the fourth conductive portion to electrically connect the second electrode to the second conductive portion and the fourth conductive portion. ### Claim 7 (depends on 5) The electrochromic sheet according to claim 5, wherein the second hole portion and the fourth hole portion are through-holes penetrating the sealing portion in the thickness direction. ### Claim 8 (depends on 1) The electrochromic sheet according to claim 1, wherein the first conductive portion and the second conductive portion each independently have an average thickness of 20 μm or more and 100 μm or less. ### Claim 9 (depends on 1) The electrochromic sheet according to claim 1, wherein the first electrode and the second electrode each independently have an average thickness of 50 nm or more and 200 nm or less. ### Claim 10 (depends on 1) A lens for eyeglasses, comprising: the electrochromic sheet according to claim 1, wherein the electrochromic sheet is provided as a cut piece which has been formed into a bent shape and cut out to correspond a lens shape. ### Claim 11 (depends on 10) Eyeglasses comprising: the lens for eyeglasses according to claim 10.