# US 2021/0280642 A1 · Display device having a bent portion > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0280642 A1 - Document ID: US20210280642A1 - Status: Published application - Kind: A1 - Application number: 17/135,040 - Filed: 2020-12-28 - Published: 2021-09-09 - Earliest claimed: 2020-03-05 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: SUNHEE LEE; SUNHO KIM; GUNHEE KIM; DONGHWAN SHIM; TAEHOON YANG; CHOELMIN JANG - Web page: https://patentgrep.com/patent/US20210280642A1 ## CPC - H10K 59/40: OLEDs integrated with touch screens - H10K 59/12: Active-matrix OLED [AMOLED] displays - H10K 59/8731: {multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers} - H10K 2102/311: {Flexible OLED} - Y02E 10/549: Organic PV cells - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A display device includes a display area and a peripheral area. A display layer includes a plurality of display elements arranged thereon. A thin-film encapsulation layer is arranged on the display layer and includes first, second, and third encapsulation layers. The second encapsulation layer is on the first encapsulation layer. The third encapsulation layer is on the second encapsulation layer. A touch sensing layer is arranged on the thin-film encapsulation layer and includes touch electrodes and trace lines. The display area is partially bent about an axis, and the third encapsulation layer is bent along the axis and has a structure in which a first layer and a second layer are alternately stacked. The first layer includes an inorganic insulating material, and the second layer includes a silicon carbon compound material. ## Claims ### Claim 1 A display device, comprising: a display area; a peripheral area at least partially surrounding the display area; a display layer including a plurality of display elements arranged in the display area; a thin-film encapsulation layer disposed on the display layer and including a first encapsulation layer, a second encapsulation layer disposed on the first encapsulation layer, and a third encapsulation layer disposed on the second encapsulation layer; and a touch sensing layer disposed on the thin-film encapsulation layer and including a plurality of touch electrodes and a plurality of trace lines, wherein the display area is at least partially bent about a bending axis, and wherein the third encapsulation layer is bent along the bending axis of the display area and has a structure in which a first layer and a second layer are alternately stacked, the first layer including an inorganic insulating material, and the second layer including a silicon carbon compound material. ### Claim 2 (depends on 1) The display device of claim 1, wherein a thickness of the second layer is greater than a thickness of the first layer. ### Claim 3 (depends on 1) The display device of claim 1, wherein the second layer includes silicon oxycarbide (SiOCy) or silicon oxide (SiOxCyHz) containing carbon and hydrogen. ### Claim 4 (depends on 3) The display device of claim 3, wherein the first layer includes an inorganic insulating material including silicon. ### Claim 5 (depends on 4) The display device of claim 4, wherein the first layer includes silicon nitride, silicon oxide, of silicon oxynitride. ### Claim 6 (depends on 1) The display device of claim 1, wherein an edge of the first layer extends further toward the peripheral area than an edge of the second layer extends towards the peripheral area. ### Claim 7 (depends on 1) The display device of claim 1, wherein the touch sensing layer includes: a conductive layer including at least one of the plurality of touch electrodes or at least one of the plurality of trace lines; a first touch insulating layer disposed between the thin-film encapsulation layer at the conductive layer; and a second touch insulating layer at least partially covering the conductive layer and including an organic material. ### Claim 8 (depends on 7) The display device of claim 7, wherein the first touch insulating layer includes an organic insulating material or a silicon carbon compound material. ### Claim 9 (depends on 8) The display device of claim 8, further comprising an auxiliary layer arranged on a bottom surface of the conductive layer facing the first touch insulating layer, the auxiliary layer including an inorganic insulating material. ### Claim 10 (depends on 7) The display device of claim 7, wherein the touch sensing layer further includes: a second conductive layer disposed between the first touch insulating layer and the second touch insulating layer; and a third touch insulating layer disposed between the conductive layer and the second conductive layer. ### Claim 11 (depends on 10) The display device of claim 10, wherein the third touch insulating layer includes a layer including an inorganic insulating material and a layer including a silicon carbon compound material. ### Claim 12 (depends on 11) The display device of claim 11, wherein a thickness of the layer including the silicon carbon compound material is greater than a thickness of the layer including the inorganic insulating material. ### Claim 13 (depends on 7) The display device of claim 7, wherein the peripheral area includes a bent area, and the first touch insulating layer at least partially covers the bent area. ### Claim 14 (depends on 13) The display device of claim 13, wherein each of the plurality of trace lines includes an inner portion, an outer portion, and a connection portion, the inner portion and the outer portion being respectively arranged on two opposite sides of the bent area with the bent area disposed therebetween, and the connection portion being connected to both the inner portion and the outer portion through contact holes and connecting the inner portion to the outer portion. ### Claim 15 (depends on 1) The display device of claim 1, wherein the display area includes a main display area, a plurality of lateral display areas, and a plurality of edge display areas, the plurality of lateral display areas constituting an image surface that is different from the main display area, and the plurality of edge display areas connecting the main display area to the plurality of lateral display areas. ### Claim 16 A display device, comprising: a display area; a peripheral area at least partially surrounding the display area; a display layer including a plurality of display elements disposed in the display area; a thin-film encapsulation layer disposed on the display layer and including a first encapsulation layer, a second encapsulation layer disposed on the first encapsulation layer, and a third encapsulation layer disposed on the second encapsulation layer; and a touch sensing layer disposed on the thin-film encapsulation layer and including a conductive layer and a touch insulating layer, the conductive layer including a touch electrode or a trace line, wherein the display area is at least partially bent about a bending axis, and wherein at least one of the first encapsulation layer, the third encapsulation layer, or the touch insulating layer is bent along the bending axis of the display area and includes a silicon carbon compound material. ### Claim 17 (depends on 16) The display device of claim 16, wherein the second encapsulation layer includes an organic insulating material, and wherein at least one of the first encapsulation layer or the third encapsulation layer has a structure in which a first layer and a second layer are alternately stacked, the first layer including an inorganic insulating material that includes silicon, and the second layer including a silicon carbon compound material. ### Claim 18 (depends on 17) The display device of claim 17, wherein a thickness of the second layer is greater than a thickness of the first layer. ### Claim 19 (depends on 17) The display device of claim 17, wherein the first layer includes silicon nitride, silicon oxide, or silicon oxynitride, and wherein the second layer includes silicon oxycarbide (SiOCy) or silicon oxide (SiOxCyHz) containing carbon and hydrogen. ### Claim 20 (depends on 17) The display device of claim 17, wherein the peripheral area includes a bent area and a pad, the pad being spaced apart from the display area with the bent area of the peripheral area disposed therebetween, and wherein an edge of the thin-film encapsulation layer is disposed between the display area and the bent area of the peripheral area. ### Claim 21 (depends on 20) The display device of claim 20, wherein an edge of the first layer extends further toward the peripheral area than an edge of the second layer extends towards the peripheral area. ### Claim 22 (depends on 16) The display device of claim 16, wherein the touch insulating layer includes a first touch insulating layer and a second touch insulating layer, the second touch insulating layer being disposed on the first touch insulating layer and including an organic insulating material, and wherein the conductive layer is disposed between the first touch insulating layer and the second touch insulating layer. ### Claim 23 (depends on 22) The display device of claim 22, wherein the first touch insulating layer includes a silicon carbon compound material, and wherein the display device further includes: an auxiliary layer disposed on a bottom surface of the conductive layer facing the first touch insulating layer, the auxiliary layer contacting the first touch insulating layer and the conductive layer. ### Claim 24 (depends on 23) The display device of claim 23, wherein the auxiliary layer includes an inorganic insulating material. ### Claim 25 (depends on 22) The display device of claim 22, wherein the touch sensing layer further includes: a second conductive layer disposed between the first touch insulating layer and the second touch insulatino layer; and a third touch insulating layer disposed between the conductive layer and the second conductive layer. ### Claim 26 (depends on 25) The display device of claim 25, wherein at least one of the first touch insulating layer or the third touch insulating layer includes a silicon carbon compound material. ### Claim 27 (depends on 26) The display device of claim 26, wherein the third touch insulating layer includes a layer including an inorganic insulating material and a layer including a silicon carbon compound material. ### Claim 28 (depends on 25) The display device of claim 25, wherein the peripheral area includes a bent area, and wherein at least one of the first touch insulating layer or the second touch insulating layer extends to the bent area of the peripheral area. ### Claim 29 (depends on 28) The display device of claim 28, wherein each of the plurality of trace lines includes an inner portion, an outer portion, and a connection portion, the inner portion and the outer portion being respectively arranged on two opposite sides of the bent area with the bent area disposed therebetween, and the connection portion being connected to both the inner portion and the outer portion through contact holes and connecting the inner portion to the outer portion. ### Claim 30 A display device, comprising: a display area that is bent about a bending axis; a peripheral area at least partially surrounding the display area; a thin-film encapsulation layer disposed on the display area; and a touch sensing layer disposed on the thin-film encapsulation layer, wherein the thin-film encapsulation layer is bent along the bending axis, and wherein the thin-film encapsulation layer includes an inorganic insulating material and a silicon carbon compound material.