# US 8,570,641 B2 · Display sheet, display device, and electronic apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,570,641 B2 - Document ID: US8570641B2 - Status: Granted - Kind: B2 - Application number: 13/238,375 - Filed: 2011-09-21 - Published: 2012-05-03 - Granted: 2013-10-29 - Earliest claimed: 2010-10-28 - Assignees: Seiko Epson Corporation - Applicants: Kenji Hayashi; Tadashi Yamada - Inventors: Kenji Hayashi; Tadashi Yamada - Web page: https://patentgrep.com/patent/US8570641B2 ## CPC - G06F 1/1652: {the display being flexible, e.g. mimicking a sheet of paper, or rollable} - B29C 44/06: Making multilayered articles {(B29C44/0407 - B29C44/0492 take precedence)} - B29C 44/5618: {Impregnating foam articles} - B29D 11/0073: {Optical laminates} - G02F 1/1339: Gaskets; Spacers; Sealing of cells - G02F 1/167: by electrophoresis - G02F 1/1679: Gaskets; Spacers; Sealing of cells; Filling or closing of cells - G02F 1/133305: {Flexible substrates, e.g. plastics, organic film} - G02F 1/13398: {Spacer materials; Spacer properties} - G02F 2001/1678: {characterised by the composition or particle type} - G02F 2201/503: Arrangements improving the resistance to shock - G02F 2202/022: polymeric - G02F 2202/36: Micro- or nanomaterials - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - B29D: PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE (making granules B29B9/00; making preforms B29B11/00) - 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 ## Abstract A display device includes a substrate that is provided on a display surface side, an opposing substrate that is arranged opposing the substrate, and a display layer that is provided between the substrate and the opposing substrate. The display layer includes a three-dimensional elastic body that is impregnated by a dispersion liquid in which at least one type of particle that is positively or negatively charged is dispersed in a dispersion medium and a bonding layer that is provided between the three-dimensional mesh-like elastic body and the substrate and which bonds the three-dimensional mesh-like elastic body to the substrate. ## Claims ### Claim 1 A display sheet comprising: a first substrate; a second substrate that is arranged opposing the first substrate; a display layer that is provided between the first substrate and the second substrate, the display layer including: a three-dimensional elastic body that is impregnated by a dispersion liquid in which at least one type of particle that is positively or negatively charged is dispersed in a dispersion medium; and a first substrate side bonding layer that is provided between the three-dimensional mesh-like elastic body and the first substrate and which bonds the three-dimensional mesh-like elastic body to the first substrate; an electrode provided between the first substrate and the display layer; and a plurality of pixel electrodes provided between the second substrate and the display layer, the pixel electrodes being arranged in a matrix of individually addressable pixels, and wherein both the first substrate side bonding layer and the second substrate side bonding layer are configured by a thermoplastic resin with a lower softening temperature than the three-dimensional mesh-like elastic body. ### Claim 2 (depends on 1) The display sheet according to claim 1, wherein the display layer further includes a second substrate side bonding layer that is provided between the three-dimensional mesh-like elastic body and the second substrate and which bonds the three-dimensional mesh-like elastic body to the second substrate. ### Claim 3 (depends on 1) The display sheet according to claim 1, wherein both the first substrate and the second substrate are flexible. ### Claim 4 (depends on 1) The display sheet according to claim 1, wherein the three-dimensional mesh-like elastic body is configured by an amphiphilic polymer including both a lipophilic group and a hydrophilic group. ### Claim 5 (depends on 1) The display sheet according to claim 1, wherein the three-dimensional mesh-like elastic body is configured by a thermoplastic polymer. ### Claim 6 (depends on 1) The display sheet according to claim 1, wherein in the three-dimensional mesh-like elastic body, the first substrate side has a greater porosity than the second substrate side. ### Claim 7 (depends on 1) The display sheet according to claim 1, wherein the three-dimensional mesh-like elastic body exhibits a different color from that of the particle. ### Claim 8 (depends on 1) The display sheet according to claim 1, wherein both the first substrate side bonding layer and the second substrate side bonding layer have a lower porosity than the three-dimensional mesh-like elastic body. ### Claim 9 (depends on 1) A display device including the display sheet according to claim 1. ### Claim 10 (depends on 9) An electronic apparatus including the display device according to claim 9.