# US 12,004,368 B2 · Display device including thin encapsulation layer containing silicon oxynitride layer > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,004,368 B2 - Document ID: US12004368B2 - Status: Granted - Kind: B2 - Application number: 17/406,229 - Filed: 2021-08-19 - Published: 2022-06-16 - Granted: 2024-06-04 - Earliest claimed: 2020-12-10 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Juwon Lee; Ojun Kwon; Ran Kim; Soonmi Choi - Web page: https://patentgrep.com/patent/US12004368B2 ## CPC - H10K 71/00: Manufacture or treatment specially adapted for the organic devices covered by this subclass - H10K 59/8731: {multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers} - G09G 3/3275: Details of drivers for data electrodes - G09G 3/3283: in which the data driver supplies a variable data current for setting the current through, or the voltage across, the light-emitting elements - G09G 3/3291: in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements - G09G 2300/0408: Integration of the drivers onto the display substrate - H10K 59/12: Active-matrix OLED [AMOLED] displays - H10K 59/122: Pixel-defining structures or layers, e.g. banks - H10K 59/124: Insulating layers formed between TFT elements and OLED elements - H10K 77/111: {Flexible substrates} - H10K 2102/311: {Flexible OLED} - H10K 2102/361: {Temperature} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) ## Abstract A display device includes a light emitting structure disposed on a substrate, and a thin film encapsulation layer disposed on the light emitting structure and including an inorganic layer containing silicon oxynitride and an organic layer. A portion of the inorganic layer has a stress intensity factor of about 1.6 MPa or more. ## Claims ### Claim 1 A display device comprising: a light emitting structure disposed on a substrate; and a thin film encapsulation layer disposed on the light emitting structure and including an inorganic layer that contains silicon oxynitride and an organic layer, wherein a portion of the inorganic layer has a stress intensity factor of about 1.6 MPa or more, wherein the inorganic layer includes: a first inorganic layer disposed between the light emitting structure and the organic layer and containing silicon oxynitride; and a second inorganic layer disposed on the organic layer and containing silicon oxynitride, wherein the first inorganic layer includes: a first barrier layer contacting the organic layer; and a second barrier layer contacting the light emitting structure, wherein the first barrier layer is disposed between the organic layer and the second barrier layer, and wherein a number of dangling bonds of the first barrier layer is less than a number of dangling bonds of the second barrier layer. ### Claim 2 (depends on 1) The display device of claim 1, wherein the inorganic layer has a refractive index of about 1.8 or less. ### Claim 3 (depends on 1) The display device of claim 1, wherein a portion of the first inorganic layer has a stress intensity factor of about 1.6 MPa or more. ### Claim 4 (depends on 1) The display device of claim 1, wherein a portion of the second inorganic layer has a stress intensity factor of about 1.6 MPa or more. ### Claim 5 (depends on 1) The display device of claim 1, wherein the first barrier layer has a stress intensity factor of about 1.6 MPa or more; and wherein the second barrier layer has a stress intensity factor of less than about 1.6 MPa. ### Claim 6 (depends on 5) The display device of claim 5, wherein a difference between a refractive index of the first barrier layer and a refractive index of the second barrier layer is less than about 0.05. ### Claim 7 A display device comprising: a light emitting structure disposed on a substrate; and a thin film encapsulation layer disposed on the light emitting structure and including an inorganic layer that contains silicon oxynitride and an organic layer, wherein a portion of the inorganic layer has a spin density of less than about 9.0×1018 spins/cm3, wherein the inorganic layer includes: a first inorganic layer disposed between the light emitting structure and the organic layer and containing silicon oxynitride; and a second inorganic layer disposed on the organic layer and containing silicon oxynitride, wherein the first inorganic layer includes: a first barrier layer contacting the organic layer; and a second barrier layer contacting the light emitting structure, wherein the first barrier layer is disposed between the organic layer and the second barrier layer, and wherein a number of dangling bonds of the first barrier layer is less than a number of dangling bonds of the second barrier layer. ### Claim 8 (depends on 7) The display device of claim 7, wherein the first barrier layer has a spin density of less than about 9.0×1018 spins/cm3 and the second barrier layer has a spin density of about 9.0×1018 spins/cm3 or more. ### Claim 9 (depends on 8) The display device of claim 8, wherein the first barrier layer has a stress intensity factor of about 1.6 MPa or more, and wherein the second barrier layer has a stress intensity factor of less than about 1.6 MPa. ### Claim 10 (depends on 8) The display device of claim 8, wherein each of a refractive index of the first barrier layer and a refractive index of the second barrier layer is about 1.8 or less, and wherein a difference between the refractive index of the first barrier layer and the refractive index of the second barrier layer is less than about 0.05. ### Claim 11 (depends on 8) The display device of claim 8, wherein the first barrier layer is not oxidized under a temperature of about 85° C. and a humidity of about 85% for about 500 hours.