# US 12,604,617 B2 · Display device including protective member and method of manufacturing the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,604,617 B2 - Document ID: US12604617B2 - Status: Granted - Kind: B2 - Application number: 18/094,920 - Filed: 2023-01-09 - Published: 2023-07-20 - Granted: 2026-04-14 - Earliest claimed: 2022-01-18 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Jung Kyu Lee; Kyu Ho Jung - Web page: https://patentgrep.com/patent/US12604617B2 ## CPC - H10K 59/124: Insulating layers formed between TFT elements and OLED elements - H10K 59/873: {Encapsulations} - H10K 59/1201: {Manufacture or treatment} - H10K 59/871: {Self-supporting sealing arrangements} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A display device and a method of manufacturing a display device are provided. A display device includes a display panel including a first pixel area, and a second pixel area including a plurality of protruding patterns protruded outward from the first pixel area at a corner portion having both a curvature of left or right side and a curvature of upper or lower side of the display device, and a cut-out portion defined by a space between the plurality of protruding patterns, and a protective member on a lower surface of the display panel includes a first protective area overlapping with the first pixel area of the display panel in a thickness direction, and a second protective area overlapping with the second pixel area of the display panel in the thickness direction, and a density per unit volume of the second protective area is greater than that of the first protective area. ## Claims ### Claim 1 A display device, wherein the display device comprises: a display panel comprising a first pixel area, and a second pixel area comprising a plurality of protruding patterns protruded outward from the first pixel area at a corner portion having both a curvature of left or right side and a curvature of upper or lower side of the display device, and a cut-out portion defined by a space between the plurality of protruding patterns; and a protective member on a lower surface of the display panel, wherein the protective member comprises a first protective area overlapping with the first pixel area of the display panel in a thickness direction, and a second protective area overlapping with the second pixel area of the display panel in the thickness direction, and a density per unit volume of at least a region of the second protective area overlapping with a protruding pattern of the plurality of protruding patterns in the thickness direction is greater than that of the first protective area. ### Claim 2 (depends on 1) The display device of claim 1, wherein the protective member has a heat shrinkage characteristic of 70% to 90% in an environment of 80° C. to 100° C. ### Claim 3 (depends on 2) The display device of claim 2, wherein an upper surface of the protective member is directly in contact with the lower surface of the display panel. ### Claim 4 (depends on 3) The display device of claim 3, wherein a distance between molecules of the second protective area of the protective member is shorter than that of the first protective area. ### Claim 5 (depends on 2) The display device of claim 2, wherein the display device further comprises a cover window on an upper surface of the display panel, and a guide member is on a lower surface of the protective member, wherein the protective member comprises polydimethylsiloxane or elastic polyurethane. ### Claim 6 (depends on 5) The display device of claim 5, wherein a heat shrinkage characteristic of the guide member is greater than that of the protective member. ### Claim 7 A display device, wherein the display device comprises: a display panel comprising a first pixel area, and a second pixel area comprising a plurality of protruding patterns protruded outward from the first pixel area at a corner portion having both a curvature of left or right side and a curvature of upper or lower side of the display device, and a cut-out portion defined by a space between the plurality of protruding patterns; and a protective member on a lower surface of the display panel, wherein the protective member comprises polyester, wherein the protective member comprises a first protective area overlapping with the first pixel area of the display panel in a thickness direction, and a second protective area overlapping with the second pixel area of the display panel in the thickness direction, and wherein the second protective area has a heat shrinkage characteristic greater than that of the first protective area. ### Claim 8 (depends on 7) The display device of claim 7, wherein the protective member comprises a first protective area overlapping with the first pixel area of the display panel in a thickness direction, and a second protective area overlapping with the second pixel area of the display panel in the thickness direction, and both the first protective area and the second protective area comprise polyester. ### Claim 9 (depends on 8) The display device of claim 8, wherein the display device further comprises: a cover window on an upper surface of the display panel; and an auxiliary protective member on a lower surface of the protective member, being directly in contact with the first protective area, having a cut octagonal shape in an area corresponding to the second protective area, and comprising polyethylene terephthalate. ### Claim 10 (depends on 7) The display device of claim 7, wherein the first protective area comprises polyethylene terephthalate, and the second protective area comprises polyester. ### Claim 11 A display device, wherein the display device comprises: a display panel comprising a first pixel area, and a second pixel area comprising a plurality of protruding patterns protruded outward from the first pixel area at a corner portion having both a curvature of left or right side and a curvature of upper or lower side of the display device, and a cut-out portion defined by a space between the plurality of protruding patterns; and a protective member on a lower surface of the display panel, wherein the protective member comprises polyester, wherein the protective member comprises a first protective area overlapping with the first pixel area of the display panel in a thickness direction, and a second protective area overlapping with the second pixel area of the display panel in the thickness direction, the first protective area comprises polyethylene terephthalate, and the second protective area comprises polyester, and wherein a portion of the second protective area, which comprises polyester, has a plurality of rod shapes protruded outward from the first protective area, and another portion of the second protective area except the portion comprising polyester comprises polyethylene terephthalate. ### Claim 12 (depends on 11) The display device of claim 11, wherein the portion of the second protective area, which comprises polyester, is located on a lower surface of the cut-out portion, and the another portion of the second protective area except the portion comprising polyester is located on a lower surface of the protruding pattern.