# US 12,193,258 B2 · Display device including a protection layer > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,193,258 B2 - Document ID: US12193258B2 - Status: Granted - Kind: B2 - Application number: 17/645,711 - Filed: 2021-12-22 - Published: 2023-01-19 - Granted: 2025-01-07 - Earliest claimed: 2021-07-14 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Sung Wook Lim; Sung Tae Hwang - Web page: https://patentgrep.com/patent/US12193258B2 ## CPC - H10K 77/111: {Flexible substrates} - H10K 59/12: Active-matrix OLED [AMOLED] displays - H10K 59/873: {Encapsulations} - H10K 59/8791: {Arrangements for improving contrast, e.g. preventing reflection of ambient light} - H10K 2102/311: {Flexible OLED} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A display device according to an embodiment of the present disclosure includes a display panel including a first region, a second region, and a bending part disposed therebetween. A protection layer is disposed on the bending part and a part of the first region adjacent to the bending part. A polarization layer is disposed on the first region and is separated from the protection layer. At least one adhesive layer is disposed on the polarization layer. The at least one adhesive layer includes a first portion overlapping the polarization layer, a second portion covering a part of the protection layer on the first region, and a third portion disposed between the first portion and the second portion and disposed on a separation space between the polarization layer and the protection layer. ## Claims ### Claim 1 A display device, comprising: a display panel including a first region, a second region, and a bending part disposed between the first region and the second region, the display panel including a substrate; a protection layer disposed on the bending part and on a portion of the first region proximate to the bending part; a polarization layer disposed on the first region and spaced apart from the protection layer; and an adhesive layer disposed on the polarization layer, wherein the adhesive layer includes a first portion overlapping the polarization layer, a second portion covering a part of the protection layer on the first region, and a third portion disposed between the first portion and the second portion and disposed on a separation space between the polarization layer and the protection layer, and wherein the first portion overlaps an upper surface of the polarization layer extending parallel to an upper surface of the substrate, and the third portion is continuously formed from the first portion. ### Claim 2 (depends on 1) The display device of claim 1, wherein the separation space is sealed from an outside by the adhesive layer. ### Claim 3 (depends on 2) The display device of claim 2, wherein the first portion, the second portion, and the third portion are part of a single continuous structure. ### Claim 4 (depends on 3) The display device of claim 3, further comprising: a cover window disposed on the polarization layer; and a first additional adhesive layer disposed between the cover window and the polarization layer. ### Claim 5 (depends on 4) The display device of claim 4, further comprising: a protection film disposed on the cover window; and a second additional adhesive layer disposed between the protection film and the cover window. ### Claim 6 (depends on 5) The display device of claim 5, wherein the first additional adhesive layer and/or the second additional adhesive layer form a part of the adhesive layer. ### Claim 7 (depends on 3) The display device of claim 3, wherein the protection layer further includes a portion disposed on a part of the second region that is proximate to the bending part. ### Claim 8 (depends on 3) The display device of claim 3, wherein the protection layer includes a curing type of resin. ### Claim 9 (depends on 1) The display device of claim 1, wherein in a bending state, the first region and the second region overlap and face each other. ### Claim 10 (depends on 1) The display device of claim 1, wherein the first region includes at least one folding part that is foldable. ### Claim 11 A display device, comprising: a display panel including a first region, a second region, and a bending part disposed between the first region and the second region; a protection layer disposed on the bending part and on a part of the first region adjacent to the bending part; a polarization layer disposed on the first region and spaced apart from the protection layer; and an adhesive layer covering a separation space that is an open space between the polarization layer and the protection layer to seal the separation space from an outside. ### Claim 12 (depends on 11) The display device of claim 11, wherein the adhesive layer further includes a first portion disposed on the polarization layer and a second portion disposed on the protection layer. ### Claim 13 (depends on 12) The display device of claim 12, wherein the adhesive layer is a single continuous structure from the polarization layer to the protection layer. ### Claim 14 (depends on 13) The display device of claim 13, further comprising a cover window disposed on the polarization layer, wherein the adhesive layer is disposed between the cover window and the polarization layer. ### Claim 15 (depends on 13) The display device of claim 13, further comprising: a cover window disposed on the polarization layer; and a protection film disposed on the cover window, wherein the adhesive layer is disposed between the protection film and the cover window. ### Claim 16 (depends on 13) The display device of claim 13, wherein of the protection layer is disposed on a portion of the second region adjacent to the bending part. ### Claim 17 (depends on 13) The display device of claim 13, wherein the protection layer includes a curing type of resin. ### Claim 18 (depends on 11) The display device of claim 11, wherein in a bending state, the first region and the second region overlap and face each other. ### Claim 19 (depends on 11) The display device of claim 11, wherein the first region includes at least one deformation part that is deformable. ### Claim 20 A display device, comprising: a display panel including a first region, a second region, and a bending part disposed between the first region and the second region; a protection layer disposed on the bending part and on a part of the first region that is proximate to the bending part; a polarization layer disposed on the first region and spaced apart from the protection layer; a first adhesive layer disposed between the display panel and the polarization layer; and a second adhesive layer disposed on the polarization layer, wherein a separation space between the polarization layer and the protection layer is an open space that is fully surrounded by a combination of the display panel, the second adhesive layer, the polarization layer, and the first adhesive layer. ### Claim 21 A display device, comprising: a flexible display panel; a protection layer covering a bent part of the flexible display panel; a polarization layer disposed on a portion of the flexible display panel that is not covered by the protection layer; and an adhesive layer covering the polarization layer and overlapping an end of the protection layer, wherein a separation space is disposed between the protection layer, on a first side thereof, and the polarization layer, on a second side thereof, and wherein the adhesive layer extends continuously to overlap the end of the protection layer and the separation space between the protection layer and the polarization layer. ### Claim 22 (depends on 21) The display device of claim 21, wherein the adhesive layer hermetically seals the separation space from an outside. ### Claim 23 (depends on 21) The display device of claim 21, wherein the polarization layer is contacted by the adhesive layer on a top surface thereof and the adhesive layer does not contact the polarization layer on a side surface thereof. ### Claim 24 (depends on 21) The display device of claim 21, wherein the adhesive layer is a first adhesive layer and a second adhesive layer is disposed between the polarization layer and the flexible display panel.