# US 2026/0076038 A1 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0076038 A1 - Document ID: US20260076038A1 - Status: Published application - Kind: A1 - Application number: 19/198,208 - Filed: 2025-05-05 - Published: 2026-03-12 - Earliest claimed: 2024-09-09 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., LTD. - Inventors: Shin Tack KANG; Seung Jun YU; Hyun Seok KIM - Web page: https://patentgrep.com/patent/US20260076038A1 ## CPC - H10K 59/122: Pixel-defining structures or layers, e.g. banks - H10K 59/38: comprising colour filters or colour changing media [CCM] - H10K 59/878: {comprising reflective means} - H10K 59/8792: {comprising light absorbing layers, e.g. black layers} - G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED] - G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element - G09G 2300/0819: used for counteracting undesired variations, e.g. feedback or autozeroing - G09G 2300/0842: forming a memory circuit, e.g. a dynamic memory with one capacitor - 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 substrate, a light emitting element layer on the substrate, and including a first light emitting area, a second light emitting area, and a third light emitting area, a thin-film encapsulation layer on the light emitting element layer, and a wavelength conversion layer on the thin-film encapsulation layer. The wavelength conversion layer includes a bank on the thin-film encapsulation layer and exposing the first light emitting area, the second light emitting area, and the third light emitting area, a reflective layer on a side surface of the bank, a light transmission pattern overlapping the first light emitting area, a first wavelength conversion pattern overlapping the second light emitting area, and a second wavelength conversion pattern overlapping the third light emitting area, and a capping layer on the bank, the light transmission pattern, the first wavelength conversion pattern, and the second wavelength conversion pattern. ## Claims ### Claim 1 A display device comprising: a substrate; a light emitting element layer disposed on the substrate, wherein the light emitting element layer includes a first light emitting area, a second light emitting area, and a third light emitting area; a thin-film encapsulation layer disposed on the light emitting element layer; and a wavelength conversion layer disposed on the thin-film encapsulation layer, wherein the wavelength conversion layer comprises: a bank disposed on the thin-film encapsulation layer, wherein the bank exposes the first light emitting area, the second light emitting area, and the third light emitting area; a light transmission pattern overlapping the first light emitting area, a first wavelength conversion pattern overlapping the second light emitting area, and a second wavelength conversion pattern overlapping the third light emitting area; and a capping layer disposed on the bank, the first wavelength conversion pattern, and the second wavelength conversion pattern. ### Claim 2 (depends on 1) The display device of claim 1, wherein the bank is in a reverse tapered shape. ### Claim 3 (depends on 1) The display device of claim 1, wherein the bank includes an organic material and at least one selected from a light blocking dye or pigment. ### Claim 4 (depends on 1) The display device of claim 1, further comprising: a reflective layer disposed on a side surface of the bank, wherein the reflective layer is in contact with the side surface of the bank, and is in contact with a side surface of each of the light transmission pattern, the first wavelength conversion pattern, and the second wavelength conversion pattern. ### Claim 5 (depends on 1) The display device of claim 1, wherein a thickness of the light transmission pattern is greater than a thickness of the bank, and a thickness of each of the first wavelength conversion pattern and the second wavelength conversion pattern is smaller than the thickness of the bank. ### Claim 6 (depends on 4) The display device of claim 4, wherein the first wavelength conversion pattern and the second wavelength conversion pattern are in contact with the reflective layer and not in contact with the bank. ### Claim 7 (depends on 1) The display device of claim 1, wherein the light transmission pattern comprises a first base resin and a first scatter, the first wavelength conversion pattern comprises a second base resin, a second scatterer, and a first wavelength shifter, the second wavelength conversion pattern comprises a third base resin, a third scatterer, and a second wavelength shifter, and wherein each of the first wavelength shifter and the second wavelength shifter changes light emitted from the light emitting element layer into light of a different color. ### Claim 8 (depends on 1) The display device of claim 1, further comprising: a counter substrate disposed opposite to the substrate; a color filter layer disposed on the counter substrate, wherein the color filter layer includes a first color filter overlapping the first light emitting area, a second color filter overlapping the second light emitting area, and a third color filter overlapping the third light emitting area; and a filling layer disposed between the color filter layer and the wavelength conversion layer. ### Claim 9 (depends on 1) The display device of claim 1, wherein the capping layer disposed on the light transmission pattern. ### Claim 10 (depends on 1) The display device of claim 1, wherein the capping layer disposed between the light transmission pattern and the thin-film encapsulation layer. ### Claim 11 (depends on 10) The display device of claim 10, wherein the capping layer is divided into portions separated and spaced apart from each other on the bank. ### Claim 12 (depends on 10) The display device of claim 10, wherein the light transmission pattern is disposed directly on the capping layer, and is not in direct contact with the bank. ### Claim 13 (depends on 10) The display device of claim 10, wherein the bank is in a reverse tapered shape. ### Claim 14 (depends on 10) The display device of claim 10, wherein the bank includes an organic material and at least one selected from a light blocking dye or pigment. ### Claim 15 A display device comprising: a substrate; a light emitting element layer disposed on the substrate, wherein the light emitting element layer includes a first light emitting area, a second light emitting area, and a third light emitting area; a thin-film encapsulation layer disposed on the light emitting element layer; and a wavelength conversion layer disposed on the thin-film encapsulation layer, wherein the wavelength conversion layer comprises: a bank disposed on the thin-film encapsulation layer, overlapping the first light emitting area, wherein the bank exposes the second light emitting area and the third light emitting area; a reflective layer disposed on a side surface of the bank; a first wavelength conversion pattern overlapping the second light emitting area and a second wavelength conversion pattern overlapping the third light emitting area; and a capping layer disposed on the bank, the first wavelength conversion pattern, and the second wavelength conversion pattern, wherein the bank includes a first base resin and a first scatterer. ### Claim 16 (depends on 15) The display device of claim 15, wherein the bank transmits light emitted from the light emitting element layer. ### Claim 17 (depends on 15) The display device of claim 15, wherein the reflective layer is in contact with the side surface of the bank, and is in contact with a side surface of each of the first wavelength conversion pattern and the second wavelength conversion pattern. ### Claim 18 (depends on 15) The display device of claim 15, wherein the first wavelength conversion pattern and the second wavelength conversion pattern is in contact with the reflective layer and not in contact with the bank. ### Claim 19 (depends on 15) The display device of claim 15, further comprising: a counter substrate disposed opposite to the substrate; a color filter layer disposed on the counter substrate, wherein the color filter layer includes a first color filter overlapping the first light emitting area, a second color filter overlapping the second light emitting area, and a third color filter overlapping the third light emitting area; and a filling layer disposed between the color filter layer and the wavelength conversion layer. ### Claim 20 An electronic device, comprising: a display device which provides an image; and a processor which provides an image data signal to the display device, and wherein the display device comprises: a substrate; a light emitting element layer disposed on the substrate, wherein the light emitting element layer includes a first light emitting area, a second light emitting area, and a third light emitting area; a thin-film encapsulation layer disposed on the light emitting element layer; and a wavelength conversion layer disposed on the thin-film encapsulation layer, wherein the wavelength conversion layer comprises: a bank disposed on the thin-film encapsulation layer, wherein the bank exposes the first light emitting area, the second light emitting area, and the third light emitting area; a reflective layer disposed on a side surface of the bank; a light transmission pattern overlapping the first light emitting area, a first wavelength conversion pattern overlapping the second light emitting area, and a second wavelength conversion pattern overlapping the third light emitting area; and a capping layer disposed on the bank, the light transmission pattern, the first wavelength conversion pattern, and the second wavelength conversion pattern.