# US 12,114,442 B2 · Cushion plate and display device including the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,114,442 B2 - Document ID: US12114442B2 - Status: Granted - Kind: B2 - Application number: 17/824,788 - Filed: 2022-05-25 - Published: 2022-12-29 - Granted: 2024-10-08 - Earliest claimed: 2021-06-24 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: Buhui Lee; Wangeon Sim; Kyoung-Hoon Kim; Kwangju Lee - Web page: https://patentgrep.com/patent/US12114442B2 ## CPC - G06F 1/1656: {Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories (mounting of accessories to a computer display G06F1/1607; display hoods G06F1/1603; cooling arrangements for portable computers G06F1/203)} - H05K 5/0217: {Mechanical details of casings (covers, lids, hoods or members for covering apertures H05K5/03)} - G06F 1/1637: {Details related to the display arrangement, including those related to the mounting of the display in the housing} - G06F 1/203: {for portable computers, e.g. for laptops} - H05K 5/0017: {with operator interface units} - H05K 7/20963: {Heat transfer by conduction from internal heat source to heat radiating structure (H05K7/20972 takes precedence)} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract Disclosed are a cushion plate and a display device including the same. The cushion plate includes an impact-absorbing layer disposed on a back surface of a display panel, a first metal layer disposed on upper portion of the impact-absorbing layer, and a second metal layer formed on upper portion of the first metal layer and having a higher thermal conductivity than the first metal layer. The impact-absorbing layer, the first metal layer, and the second metal layer have a first curvature area, and at least one perforated pattern is defined in an area of the first metal layer corresponding to the first curvature area. ## Claims ### Claim 1 A cushion plate comprising: an impact-absorbing layer disposed on a display panel; a first metal layer disposed on the impact-absorbing layer; and a second metal layer disposed on the first metal layer and having higher thermal conductivity than the first metal layer, wherein the impact-absorbing layer, the first metal layer, and the second metal layer have a first curvature area, and wherein at least one perforated pattern is disposed in an area of the first metal layer corresponding to the first curvature area. ### Claim 2 (depends on 1) The cushion plate of claim 1, wherein the at least one perforated pattern is disposed in a thickness direction of the first metal layer. ### Claim 3 (depends on 1) The cushion plate of claim 1, wherein the first metal layer has greater strength than the second metal layer. ### Claim 4 (depends on 3) The cushion plate of claim 3, wherein the first metal layer has greater thickness than the second metal layer. ### Claim 5 (depends on 3) The cushion plate of claim 3, wherein the second metal layer has greater thickness than the first metal layer. ### Claim 6 (depends on 1) The cushion plate of claim 1, wherein the impact-absorbing layer includes: a first adhesive layer adhered to the display panel; a foam layer disposed on the first adhesive layer and having a plurality of bubbles formed therein; and a second adhesive layer disposed between the foam layer and the first metal layer. ### Claim 7 (depends on 1) The cushion plate of claim 1, wherein the first metal layer has a smaller width than the impact-absorbing layer. ### Claim 8 (depends on 7) The cushion plate of claim 7, wherein the second metal layer has a smaller width than the first metal layer. ### Claim 9 (depends on 1) The cushion plate of claim 1, wherein the impact-absorbing layer, the first metal layer, and the second metal layer are divided into the first curvature area having a radius of curvature smaller than a reference radius of curvature and a second curvature area having a radius of curvature greater than the reference radius of curvature. ### Claim 10 (depends on 1) The cushion plate of claim 1, wherein the at least one perforated pattern is disposed in a thickness direction of the first metal layer and has a width decreasing in an upward direction. ### Claim 11 (depends on 1) The cushion plate of claim 1, wherein a third perforated pattern is disposed in a thickness direction of the first metal layer in the first curvature area of the first metal layer, and fourth perforated patterns having widths greater than a width of the third perforated pattern are disposed side by side in a lateral direction of the third perforated pattern. ### Claim 12 (depends on 1) The cushion plate of claim 1, further comprising a protective film disposed on the second metal layer, wherein at least one second perforated pattern is disposed in an area of the protective film corresponding to the first curvature area. ### Claim 13 A display device comprising: a display panel; and a cushion plate disposed on a back surface of the display panel, wherein the cushion plate includes: an impact-absorbing layer disposed on the back surface of the display panel; a first metal layer disposed on the impact-absorbing layer; and a second metal layer disposed on the first metal layer and having higher thermal conductivity than the first metal layer, wherein the impact-absorbing layer, the first metal layer, and the second metal layer have a first curvature area, wherein at least one perforated pattern is disposed in an area of the first metal layer corresponding to the first curvature area. ### Claim 14 (depends on 13) The display device of claim 13, wherein the at least one perforated pattern is disposed in a thickness direction of the first metal layer. ### Claim 15 (depends on 13) The display device of claim 13, wherein the first metal layer has greater strength and greater thickness than the second metal layer. ### Claim 16 (depends on 13) The display device of claim 13, wherein the impact-absorbing layer includes: a first adhesive layer adhered to the back surface of the display panel; a foam layer disposed on the first adhesive layer and having a plurality of bubbles disposed therein; and a second adhesive layer disposed between the foam layer and the first metal layer. ### Claim 17 A display device comprising: a display panel including a first curvature area and a second curvature area, wherein the first curvature area has a radius of curvature equal to or smaller than a reference radius of curvature and the second curvature area has a radius of curvature greater than the reference radius of curvature; and a cushion plate disposed on a back surface of the display panel, wherein the cushion plate includes: an impact-absorbing layer disposed on the back surface of the display panel; a first metal layer disposed on the impact-absorbing layer and having a strength greater than a reference strength; and a second metal layer disposed on the first metal layer and having smaller strength and higher thermal conductivity than the first metal layer, wherein at least one perforated pattern is disposed in an area of the first metal layer corresponding to the first curvature area. ### Claim 18 (depends on 17) The display device of claim 17, wherein the at least one perforated pattern is disposed in a thickness direction of the first metal layer. ### Claim 19 (depends on 18) The display device of claim 18, wherein the at least one perforated pattern has a width decreasing in an upward direction from the back surface of the display panel. ### Claim 20 (depends on 17) The display device of claim 17, wherein a third perforated pattern is disposed in a thickness direction of the first metal layer in the first curvature area of the first metal layer, and fourth perforated patterns having widths greater than a width of the third perforated pattern are disposed side by side in a lateral direction of the third perforated pattern.