# US 2025/0148992 A1 · Display device, method of fabricating the same and head mounted display device including the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0148992 A1 - Document ID: US20250148992A1 - Status: Published application - Kind: A1 - Application number: 18/936,536 - Filed: 2024-11-04 - Published: 2025-05-08 - Earliest claimed: 2023-11-07 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., LTD. - Inventors: Kyung Man KIM; Tae Min KIM; Dong Geun SHIN; Seung Hee LEE - Web page: https://patentgrep.com/patent/US20250148992A1 ## CPC - G09G 3/3266: Details of drivers for scan electrodes - H10K 59/879: {comprising refractive means, e.g. lenses} - H10K 59/122: Pixel-defining structures or layers, e.g. banks - H10K 59/38: comprising colour filters or colour changing media [CCM] - H10K 59/873: {Encapsulations} - H10K 59/8792: {comprising light absorbing layers, e.g. black layers} - G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element - G09G 2300/0426: Layout of electrodes and connections - G09G 2300/0819: used for counteracting undesired variations, e.g. feedback or autozeroing - G09G 2300/0852: being a dynamic memory with more than one capacitor - G09G 2300/0861: with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes - G09G 2310/0251: Precharge or discharge of pixel before applying new pixel voltage - 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) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A display device, method of fabricating the same and head mounted display device comprising the same are provided. The display device includes a semiconductor substrate including a display area, a non-display area around the display area in plan view, and transistors, a light-emitting element layer above the semiconductor substrate, and including light-emitting elements in the display area, an encapsulation layer above the light-emitting element layer, a color filter layer above the encapsulation layer, and including color filters respectively overlapping the light-emitting elements, a lens array layer above the color filter layer, in the display area, in a portion of the non-display area, and including lenses respectively overlapping the light-emitting elements and having a convex cross-sectional shape, and pattern portions in the non-display area around the lenses, and a cover layer above the lens array layer. ## Claims ### Claim 1 A display device comprising: a semiconductor substrate comprising a display area, a non-display area around the display area in plan view, and transistors; a light-emitting element layer above the semiconductor substrate, and comprising light-emitting elements in the display area; an encapsulation layer above the light-emitting element layer; a color filter layer above the encapsulation layer, and comprising color filters respectively overlapping the light-emitting elements; a lens array layer above the color filter layer, in the display area, in a portion of the non-display area, and comprising: lenses respectively overlapping the light-emitting elements and having a convex cross-sectional shape; and pattern portions in the non-display area around the lenses; and a cover layer above the lens array layer. ### Claim 2 (depends on 1) The display device of claim 1, wherein the pattern portions have a same cross-sectional shape as the lenses. ### Claim 3 (depends on 1) The display device of claim 1, wherein an area of the cover layer in plan view is substantially equal to an area of the lens array layer in plan view. ### Claim 4 (depends on 1) The display device of claim 1, wherein the pattern portions comprise linear patterns spaced apart from each other, and surrounding the display area in plan view. ### Claim 5 (depends on 4) The display device of claim 4, wherein intervals between the linear patterns are substantially equal. ### Claim 6 (depends on 4) The display device of claim 4, wherein intervals between the linear patterns are different from each other. ### Claim 7 (depends on 4) The display device of claim 4, wherein an interval between a pair of the linear patterns adjacent to the display area is less than an interval between another pair of the linear patterns at an outermost portion. ### Claim 8 (depends on 4) The display device of claim 4, wherein an area of the cover layer in plan view is less than an area of the lens array layer in plan view. ### Claim 9 (depends on 1) The display device of claim 1, wherein the pattern portions comprise triangular patterns surrounding the display area and having a width decreasing from the display area toward an outside of the non-display area. ### Claim 10 (depends on 1) The display device of claim 1, wherein the pattern portions comprise: a first lens pattern portion, in which there are first lens-shaped patterns having a lower density and having a greater size than the lenses in the display area; and a second lens pattern portion, in which there are second lens-shaped patterns having a higher density and having a smaller size than the lenses in the display area, and wherein the first lens pattern portion is between the second lens pattern portion and the lenses. ### Claim 11 (depends on 1) The display device of claim 1, further comprising a light-blocking member on side surfaces of the lens array layer and the cover layer. ### Claim 12 (depends on 1) The display device of claim 1, further comprising a coating layer in the non-display area outside the lens array layer. ### Claim 13 (depends on 1) The display device of claim 1, further comprising an emission driver and a scan driver in the non-display area, wherein the lens array layer overlaps the emission driver and the scan driver. ### Claim 14 (depends on 13) The display device of claim 13, further comprising pads in the non-display area, and not overlapping the lens array layer. ### Claim 15 A method of fabricating a display device, comprising: forming a light-emitting element layer on a semiconductor substrate comprising a display area, a non-display area around the display area in plan view, and transistors, the light-emitting element layer comprising light-emitting elements in the display area; forming a lens array layer on the light-emitting element layer, the lens array layer being in the display area and in a portion of the non-display area, and comprising lenses respectively overlapping the light-emitting elements, and pattern portions in the non-display area around the lenses; forming a resin layer on the lens array layer; attaching a release film to an upper surface of the resin layer to planarize the resin layer; and forming a cover layer on the lens array layer by curing the resin layer, and removing the release film. ### Claim 16 (depends on 15) The method of claim 15, wherein the pattern portions have a same cross-sectional shape as the lenses, and wherein the resin layer is self-aligned at an edge boundary of the lens array layer. ### Claim 17 (depends on 15) The method of claim 15, further comprising forming a spacer in the non-display area of the semiconductor substrate, the spacer having a height that is substantially equal to a height of the cover layer. ### Claim 18 (depends on 15) The method of claim 15, wherein an area of the cover layer in plan view is substantially equal to an area of the lens array layer in plan view. ### Claim 19 (depends on 15) The method of claim 15, wherein the lens array layer comprises a hydrophilic organic material, wherein the resin layer comprises a hydrophilic organic material, and wherein a portion of the semiconductor substrate, in which the lens array layer is not located, has lower surface energy than the lens array layer. ### Claim 20 A head mounted display device comprising: a frame configured to be worn on a user's body, and corresponding to user's left and right eyes; display devices in the frame; and eyepieces respectively on the display devices, wherein the display devices comprise: a semiconductor substrate comprising a display area, a non-display area around the display area in plan view, and transistors; a light-emitting element layer above the semiconductor substrate, and comprising light-emitting elements in the display area; an encapsulation layer above the light-emitting element layer; a color filter layer above the encapsulation layer, and comprising color filters respectively overlapping the light-emitting elements; a lens array layer above the color filter layer, in the display area, in a portion of the non-display area, comprising lenses respectively overlapping the light-emitting elements in the display area and having a convex cross-sectional shape, and comprising pattern portions in the non-display area around the lenses; and a cover layer above the lens array layer.