# US 2017/0285246 A1 · Display apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0285246 A1 - Document ID: US20170285246A1 - Status: Published application - Kind: A1 - Application number: 15/623,590 - Filed: 2017-06-15 - Published: 2017-10-05 - Earliest claimed: 2014-12-18 - Assignees: Sakai Display Products Corporation - Applicants: Sakai Display Products Corporation - Inventors: Daisuke Teragawa - Web page: https://patentgrep.com/patent/US20170285246A1 ## CPC - G02B 6/0043: {provided on the surface of the light guide} - G02B 6/005: {provided by one optical element, or plurality thereof, placed on the light output side of the light guide} - G02B 6/0055: {Reflecting element, sheet or layer} - G02B 6/0088: {of the light guide or other optical sheets in the package} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract A display apparatus includes: a rectangular display panel, which includes a screen frontward thereof; an optical sheet having a rectangular shape, which is arranged rearward of the rectangular display panel; a light guide plate having a rectangular shape, which is arranged rearward of the optical sheet; a light source, which is arranged to face a side surface of the light guide plate; and a first close contact prevention layer provided on a surface, facing the optical sheet, of the light guide plate, wherein the first close contact prevention layer comprises a first binder and a plurality of first beads dispersed in the first binder, and the plurality of first beads form a plurality of first protrusions for preventing close contact with the optical sheet, at a surface of the first close contact prevention layer. ## Claims ### Claim 1 A display apparatus, comprising: a rectangular display panel, which includes a screen frontward thereof; an optical sheet having a rectangular shape, which is arranged rearward of the rectangular display panel; a light guide plate having a rectangular shape, which is arranged rearward of the optical sheet; a light. source, which is arranged Lo face a side surface of the light guide plate; and a first close contact prevention layer provided on a surface, facing the optical sheet, of the light guide plate, wherein the first close contact prevention layer comprises a first binder and a plurality of first beads dispersed in the first binder, and the plurality of first beads form a plurality of first protrusions for preventing close contact with the optical sheet, at a surface of the first close contact prevention layer. ### Claim 2 (depends on 1) The display apparatus according to claim 1, wherein the first binder has a glass transition temperature of 30° C. or less. ### Claim 3 (depends on 1) The display apparatus according to claim 1, wherein the plurality of first beads has a glass transition temperature of 30° C. or less. ### Claim 4 (depends on 1) The display apparatus according to claim 1, further comprising a second close contact prevention layer provided on a surface, facing the light guide plate, of the optical sheet, wherein the second close contact prevention layer comprises a second binder and a plurality of second beads dispersed in the second binder, and the plurality of second beads form a plurality of second protrusions for preventing close contact with the light guide plate, at a surface of the second close contact prevention layer. ### Claim 5 (depends on 4) The display apparatus according to claim 4, wherein a first amount of protrusion of the plurality of first protrusions is smaller than a second amount of protrusion of the plurality of second protrusions. ### Claim 6 (depends on 5) The display apparatus according to claim 5, wherein the first amount of protrusion is more than 5 μm and 12 μm or less, and the second amount of protrusion is 0.8 μm or more and 7 μm or less. ### Claim 7 (depends on 1) The display apparatus according to claim 1, wherein the following expression is satisfied: 1