# US 12,225,756 B2 · Display apparatus including low reflection and reflection adjusting layers > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,225,756 B2 - Document ID: US12225756B2 - Status: Granted - Kind: B2 - Application number: 17/677,129 - Filed: 2022-02-22 - Published: 2023-02-02 - Granted: 2025-02-11 - Earliest claimed: 2021-07-23 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Kyunghee Lee; Mihwa Lee - Web page: https://patentgrep.com/patent/US12225756B2 ## CPC - H10K 59/873: {Encapsulations} - H10K 59/40: OLEDs integrated with touch screens - H10K 59/871: {Self-supporting sealing arrangements} - H10K 59/878: {comprising reflective means} - H10K 59/8792: {comprising light absorbing layers, e.g. black layers} - H10K 85/311: {Phthalocyanine} - H10K 59/1216: {the pixel elements being capacitors} - H10K 59/122: Pixel-defining structures or layers, e.g. banks - H10K 59/124: Insulating layers formed between TFT elements and OLED elements - H10K 59/126: Shielding, e.g. light-blocking means over the TFTs - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A display apparatus having improved reflectance includes at least one display element arranged on a substrate; a low reflection layer arranged on the display element and including an inorganic material; an encapsulation layer arranged on the low reflection layer and including a pigment and a first organic material; and a reflection adjusting layer arranged on the encapsulation layer and including a dye and a second organic material. ## Claims ### Claim 1 A display apparatus comprising: at least one display element arranged on a substrate; a low reflection layer arranged on the display element, wherein the low reflection layer comprises inorganic material; an encapsulation layer arranged on the low reflection layer, wherein the encapsulation layer comprises a pigment and a first organic material; and a reflection adjusting layer arranged on the encapsulation layer, wherein the reflection adjusting layer comprises a dye and a second organic material. ### Claim 2 (depends on 1) The display apparatus of claim 1, wherein the pigment is included in the encapsulation layer and is not included in the reflection adjusting layer. ### Claim 3 (depends on 1) The display apparatus of claim 1, wherein the pigment is insoluble in the first organic material. ### Claim 4 (depends on 3) The display apparatus of claim 3, wherein the first organic material comprises a base polymer having at least one of an acrylate group and an epoxy group. ### Claim 5 (depends on 3) The display apparatus of claim 3, wherein the pigment comprises at least one of C.I Pigment Red 177, C.I Pigment Green 7, C.I Pigment Green 59, C.I Pigment Yellow 185, and C.I Pigment Blue 15:6. ### Claim 6 (depends on 2) The display apparatus of claim 2, wherein the dye is included in the reflection adjusting layer and not included in the encapsulation layer. ### Claim 7 (depends on 1) The display apparatus of claim 1, wherein the dye is soluble in the second organic material. ### Claim 8 (depends on 1) The display apparatus of claim 1, wherein the inorganic material comprises at least one of ytterbium (Yb), bismuth (Bi), cobalt (Co), molybdenum (Mo), titanium (Ti), zirconium (Zr), aluminum (Al), chromium (Cr), niobium (Nb), platinum (Pt), tungsten (W), indium (In), tin (Sn), iron (Fe), nickel (Ni), tantalum (Ta), manganese (Mn), and zinc (Zn), germanium (Ge). ### Claim 9 (depends on 1) The display apparatus of claim 1, wherein the at least one display element includes a plurality of display elements, and the low reflection layer is patterned to respectively correspond to the plurality of display elements. ### Claim 10 (depends on 1) The display apparatus of claim 1, wherein the encapsulation layer comprises: at least one inorganic encapsulation layer; and at least one organic encapsulation layer comprising the pigment and the first organic material. ### Claim 11 (depends on 1) The display apparatus of claim 1, wherein the encapsulation layer comprises: an encapsulation substrate; and a filling material comprising the pigment and the first organic material. ### Claim 12 (depends on 1) The display apparatus of claim 1, wherein the reflection adjusting layer absorbs light in at least two wavelength regions among a first wavelength region, a second wavelength region, a third wavelength region, and a fourth wavelength region, each having a different wavelength band. ### Claim 13 (depends on 12) The display apparatus of claim 12, wherein the first wavelength region is in a range of about 350 nm to about 430 nm, the second wavelength region is in a range of about 480 nm to about 510 nm, the third wavelength region is in a range of about 575 nm to about 605 nm, and the fourth wavelength region is in a range of about 650 nm to about 700 nm. ### Claim 14 (depends on 13) The display apparatus of claim 13, wherein the reflection adjusting layer absorbs light in the second wavelength region and light in the third wavelength region. ### Claim 15 (depends on 12) The display apparatus of claim 12, wherein the reflection adjusting layer comprises: at least two dyes among a first dye absorbing light in the first wavelength region, a second dye absorbing light in the second wavelength region, a third dye absorbing light in the third wavelength region, and a fourth dye absorbing light in the fourth wavelength region. ### Claim 16 (depends on 15) The display apparatus of claim 15, wherein the first dye comprises at least one of a metal porphyrin compound, a methine compound, and a triazine compound. ### Claim 17 (depends on 15) The display apparatus of claim 15, wherein the second dye comprises a pyrromethene compound. ### Claim 18 (depends on 15) The display apparatus of claim 15, wherein the third dye comprises a tetra-azaporphyrin compound. ### Claim 19 (depends on 15) The display apparatus of claim 15, wherein the fourth dye comprises a phthalocyanine compound. ### Claim 20 (depends on 15) The display apparatus of claim 15, wherein an amount of each of the dyes in the reflection adjusting layer is in a range of about 0.005 wt % to about 0.5 wt %.