# US 12,114,528 B2 · Display panel with reduced external reflection and improved light efficiency > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,114,528 B2 - Document ID: US12114528B2 - Status: Granted - Kind: B2 - Application number: 17/943,270 - Filed: 2022-09-13 - Published: 2023-01-05 - Granted: 2024-10-08 - Earliest claimed: 2019-05-16 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Sun-Kyu Joo; Byung-Chul Kim; Inok Kim; Jaecheol Park; Jaemin Seong; Inseok Song; Keunchan Oh; Gak Seok Lee; Jieun Jang; Chang-Soon Jang - Web page: https://patentgrep.com/patent/US12114528B2 ## CPC - H10K 59/38: comprising colour filters or colour changing media [CCM] - H10K 59/122: Pixel-defining structures or layers, e.g. banks - H10K 59/873: {Encapsulations} - H10K 59/8731: {multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers} - H10K 59/8792: {comprising light absorbing layers, e.g. black layers} - H10K 59/877: {comprising scattering means} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A display panel includes a base substrate including: a plurality of pixel regions and a peripheral region adjacent thereto; a pixel defining film disposed on the base substrate and having a plurality of openings, each of which corresponding to a respective one of the plurality of pixel regions; a plurality of light emitting elements disposed on the base substrate corresponding to the plurality of openings and configured to generate first color light; an encapsulation member disposed on the plurality of light emitting elements; a light shield pattern disposed on the encapsulation member and overlapping the peripheral region when viewed in a plan view; and a light control layer disposed on the encapsulation member and the light shield pattern and overlapping the plurality of pixel regions. The pixel defining film includes a first color material, and the light shield pattern includes a second color material different form the first color. ## Claims ### Claim 1 A display panel comprising: a base substrate including a plurality of pixel regions and a peripheral region adjacent to the plurality of pixel regions; a pixel defining film disposed on the base substrate and having a plurality of openings, each of the plurality of openings corresponding to a respective one of the plurality of pixel regions; a plurality of light emitting elements disposed on the base substrate corresponding to the plurality of openings and configured to generate first color light having a first color; an encapsulation layer disposed on the plurality of light emitting elements; a light shield pattern disposed on the encapsulation layer and overlapping the peripheral region when viewed in a plan view; and a light control layer disposed on the encapsulation layer and the light shield pattern, the light control layer including a separation wall section spaced apart from the light shield pattern and overlapping the light shield pattern when viewed in a plan view and a plurality of light control parts disposed in regions corresponding to the plurality of pixel regions, wherein the light shield pattern comprises a second material having a second color that is different from the first color. ### Claim 2 (depends on 1) The display panel of claim 1, wherein the light shield pattern comprises a black material. ### Claim 3 (depends on 1) The display panel of claim 1, wherein the first color is a blue color and the second color is a black color. ### Claim 4 (depends on 1) The display panel of claim 1, wherein the plurality of light control parts comprise: a first light control part configured to transmit the first color light; and a third light control part configured to convert the first color light into third color light having a third color that is different from the first color and the second color. ### Claim 5 (depends on 4) The display panel of claim 4, further comprising a color filter layer disposed on the light control layer, wherein the plurality of pixel regions comprises: a first pixel region overlapping the first light control part when viewed in the plan view; and a third pixel region overlapping the third light control part when viewed in the plan view, and wherein the color filter layer comprises: a first color filter part overlapping the first pixel region and the peripheral region when viewed in the plan view and having an opening defined therein corresponding to the third pixel region; and a third color filter part overlapping the third pixel region when viewed in the plan view. ### Claim 6 (depends on 5) The display panel of claim 5, further comprising a filling layer disposed between the encapsulation layer and the light control layer, wherein the light shield pattern is covered by the filling layer. ### Claim 7 (depends on 5) The display panel of claim 5, further comprising a capping layer disposed at least between the light control layer and the plurality of light emitting elements or between the light control layer and the color filter layer. ### Claim 8 (depends on 4) The display panel of claim 4, wherein the first color light has a first wavelength range of about 410 nm to about 480 nm, and the third color light has a third wavelength range of about 625 nm to 675 nm. ### Claim 9 (depends on 1) The display panel of claim 1, wherein the light control layer comprises: a base resin; light emitting bodies dispersed in the base resin; and scattering bodies dispersed in the base resin. ### Claim 10 (depends on 1) The display panel of claim 1, wherein the light shield pattern is spaced apart from the light control layer in a cross-sectional view. ### Claim 11 (depends on 1) The display panel of claim 1, wherein each of the plurality of light emitting elements comprises a first electrode, a second electrode, and a light emitting layer disposed between the first electrode and the second electrode, and wherein the light emitting layer of the plurality of light emitting elements having an integrated shape. ### Claim 12 A display panel comprising: a base substrate including a plurality of pixel regions and a peripheral region adjacent to the plurality of pixel regions; a plurality of light emitting elements disposed on the base substrate and overlapping the plurality of pixel regions when viewed in a plan view and configured to generate blue light; an encapsulation layer covering the plurality of light emitting elements; a light shield pattern disposed on the encapsulation layer and overlapping the peripheral region when viewed in the plan view; a filling layer covering the light shield pattern; and a light control layer disposed on the filling layer and overlapping the plurality of pixel regions, the light control layer including a separation wall section spaced apart from the light shield pattern and overlapping the plurality of light shield patterns when viewed in a plan view and a plurality of light control parts disposed in regions corresponding to the plurality of pixel regions, wherein the light shield pattern comprises a black color material.