# US 11,444,266 B2 · Display panel and display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,444,266 B2 - Document ID: US11444266B2 - Status: Granted - Kind: B2 - Application number: 16/343,779 - Filed: 2019-01-14 - Published: 2021-11-18 - Granted: 2022-09-13 - Earliest claimed: 2018-12-13 - Applicants: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Inventors: Guangbao Fan - Web page: https://patentgrep.com/patent/US11444266B2 ## CPC - H10K 59/873: {Encapsulations} - H10K 59/874: {including getter material or desiccant} - H10K 59/12: Active-matrix OLED [AMOLED] displays - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract Provided are a display panel and a display device. The display panel includes a substrate; an organic light emitting element, disposed on the substrate; a plurality of barrier pillars, wherein the plurality of barrier pillars are disposed on the substrate, and the plurality of barrier pillars are disposed around the organic light emitting device; a water absorbing layer, wherein the water absorbing layer is disposed on the substrate, and the water absorbing layer is disposed around the plurality of barrier pillars; and a thin film encapsulation layer, disposed on the organic light emitting device, the substrate, the plurality of barrier pillars and the water absorbing layer. ## Claims ### Claim 1 A display panel, including: a substrate; an organic light emitting device, disposed on the substrate; a plurality of barrier pillars, wherein the plurality of barrier pillars are disposed on the substrate, and the plurality of barrier pillars are disposed around the organic light emitting device; a water absorbing layer, wherein the water absorbing layer is disposed on the substrate, and the water absorbing layer is disposed to surround one of the plurality of barrier pillars farthest from the organic light emitting device, and a height of the water absorbing layer is less than heights of the plurality of barrier pillars and the height of the water absorbing layer ranges from 0.1 microns to 0.3 microns; and a thin film encapsulation layer, disposed on the organic light emitting device, the substrate, the plurality of barrier pillars and the water absorbing layer. ### Claim 2 (depends on 1) The display panel according to claim 1, wherein the plurality of barrier pillars are two circles of barrier pillars disposed around the organic light emitting device; and the water absorbing layer is disposed around one circle of barrier pillars farthest from the organic light emitting device. ### Claim 3 (depends on 2) The display panel according to claim 2, wherein a height of the barrier pillars adjacent to an edge region of the display panel is smaller than a height of the barrier pillars away from the edge region of the display panel. ### Claim 4 (depends on 1) The display panel according to claim 1, wherein the barrier pillars include a body and a water absorbing film layer disposed on the body. ### Claim 5 (depends on 1) The display panel according to claim 1, wherein constituent materials of the water absorbing layer includes an organic water absorbing material and/or an inorganic water absorbing material. ### Claim 6 (depends on 3) The display panel according to claim 3, wherein the inorganic water absorbing material includes calcium carbonate, and the organic water absorbing material includes a resin and/or an acrylate. ### Claim 7 (depends on 1) The display panel according to claim 1, wherein constituent materials of the water absorbing layer include an epoxy resin, an acrylic resin and a curing agent. ### Claim 8 (depends on 1) The display panel according to claim 1, wherein the thin film encapsulation layer includes: a first thin film encapsulation layer, disposed on the substrate, the organic light emitting device and the barrier pillars; a second thin film encapsulation layer, disposed on the first thin film encapsulation layer, wherein the second thin film encapsulation layer is also disposed on a side of the barrier pillars adjacent to the organic light emitting device; and a third thin film encapsulation layer, disposed on the first thin film encapsulation layer, the second thin film encapsulation layer and the water absorbing layer. ### Claim 9 A display device, including a display panel; wherein the display panel includes: a substrate, an organic light emitting device, disposed on the substrate; a plurality of barrier pillars, wherein the plurality of barrier pillars are disposed on the substrate, and the plurality of barrier pillars are disposed around the organic light emitting device; a water absorbing layer, wherein the water absorbing layer is disposed on the substrate, and the water absorbing layer is disposed to surround one of the plurality of barrier pillars farthest from the organic light emitting device, and a height of the water absorbing layer is less than heights of the plurality of barrier pillars and ranges from 0.1 micron to 0.3 micron; and a thin film encapsulation layer, disposed on the organic light emitting device, the substrate, the plurality of barrier pillars and the water absorbing layer. ### Claim 10 (depends on 9) The display device according to claim 9, wherein the plurality of barrier pillars are two circles of barrier pillars disposed around the organic light emitting device; and the water absorbing layer is disposed around one circle of barrier pillars farthest from the organic light emitting device. ### Claim 11 (depends on 10) The display device according to claim 10, wherein a height of the barrier pillars adjacent to an edge region of the display panel is smaller than a height of the barrier pillars away from the edge region of the display panel. ### Claim 12 (depends on 9) The display device according to claim 9, wherein the barrier pillars include a body and a water absorbing film layer disposed on the body. ### Claim 13 (depends on 9) The display device according to claim 9, wherein constituent materials of the water absorbing layer includes an organic water absorbing material and/or an inorganic water absorbing material. ### Claim 14 (depends on 13) The display device according to claim 13, wherein the inorganic water absorbing material includes calcium carbonate, and the organic water absorbing material includes a resin and/or an acrylate. ### Claim 15 (depends on 9) The display device according to claim 9, wherein constituent materials of the water absorbing layer include an epoxy resin, an acrylic resin and a curing agent. ### Claim 16 (depends on 9) The display device according to claim 9, wherein the thin film encapsulation layer includes: a first thin film encapsulation layer, disposed on the substrate, the organic light emitting device and the barrier pillars; a second thin film encapsulation layer, disposed on the first thin film encapsulation layer, wherein the second thin film encapsulation layer is also disposed on a side of the barrier pillars adjacent to the organic light emitting device; and a third thin film encapsulation layer, disposed on the first thin film encapsulation layer, the second thin film encapsulation layer and the water absorbing layer.