# US 10,312,296 B2 · Color conversion layer integration into display substrate with high intensity light sources > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,312,296 B2 - Document ID: US10312296B2 - Status: Granted - Kind: B2 - Application number: 15/724,319 - Filed: 2017-10-04 - Published: 2018-04-05 - Granted: 2019-06-04 - Earliest claimed: 2016-10-04 - Assignees: VueReal Inc. - Applicants: VueReal Inc. - Inventors: Gholamreza Chaji - Web page: https://patentgrep.com/patent/US10312296B2 ## CPC - G02F 1/017: Structures with periodic or quasi periodic potential variation, e.g. superlattices, quantum wells - G02B 5/20: Filters (polarising elements G02B5/30) - G09G 3/3225: using an active matrix - H10K 59/121: characterised by the geometry or disposition of pixel elements - H10K 59/122: Pixel-defining structures or layers, e.g. banks - H10K 59/38: comprising colour filters or colour changing media [CCM] - H10K 59/8792: {comprising light absorbing layers, e.g. black layers} - G02F 1/01791: {Quantum boxes or quantum dots} - G09G 2300/0452: Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components - G09G 2300/08: Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements - H10K 59/12: Active-matrix OLED [AMOLED] displays - H10K 2102/3023: {Direction of light emission} - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - 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 The disclosure is related to arranging integrating color conversion layer into a pixel structure by distributing the light output of the light source, and using an attenuator to reduce the hot spot effect caused by high light intensity light at a direct point of sight. ## Claims ### Claim 1 A pixel structure for a display comprising: a substrate; a light source to generate light mounted on or over the substrate; a light conversion layer to convert the light to a desired color; and a light distribution structure to distribute the light from the light source onto the light conversion layer; and a light attenuator structure mounted on or over the light source, wherein the light attenuator structure comprises a reflective layer to redirect the light back through the light distribution structure. ### Claim 2 (depends on 1) The pixel structure according to claim 1, wherein the light attenuator structure comprises a material opaque to the light to block direct lines of sight between the light source and the light conversion layer. ### Claim 3 (depends on 1) The pixel structure according to claim 1, further comprising a reflector mounted on one or more sides of the light distribution structure to reflect light back through the light distribution structure, around the light attenuator structure, and through the light conversion layer. ### Claim 4 (depends on 3) The pixel structure according to claim 3, wherein the light distribution structure comprises sides angled at an acute angle to the substrate; and wherein the reflector comprises angled portions mounted on the angled sides of the light distribution structure. ### Claim 5 (depends on 3) The pixel structure according to claim 3, wherein the light distribution structure comprises sides angled at an obtuse angle to the substrate; and wherein the reflector comprises angled portions mounted on the angled sides of the light distribution structure. ### Claim 6 (depends on 3) The pixel structure according to claim 3, wherein the reflector comprises a contact for the light source to electrically connect the light source to an external source of power. ### Claim 7 (depends on 1) The pixel structure according to claim 1, wherein the light source is mounted over the substrate; wherein the light distribution structure is mounted over the light source; and wherein the light conversion layer is mounted on the light distribution structure. ### Claim 8 (depends on 7) The pixel structure according to claim 7, wherein the light distribution structure includes at least one side at an angle to the substrate; and wherein the light conversion layer extends up each of the angled sides. ### Claim 9 (depends on 7) The pixel structure according to claim 7, further comprising an attenuator mounted between the light source and the light conversion layer. ### Claim 10 (depends on 1) The pixel structure according to claim 1, wherein the light conversion layer is mounted on the substrate; wherein the light distribution structure is mounted over the light conversion layer; and wherein the light source is mounted on the light distribution structure. ### Claim 11 (depends on 10) The pixel structure according to claim 10, further comprising an attenuator mounted between the light source and the light conversion layer. ### Claim 12 (depends on 11) The pixel structure according to claim 11, further comprising a reflector over the light distribution structure to reflect light back through the light distribution structure and through the light conversion layer. ### Claim 13 (depends on 12) The pixel structure according to claim 12, wherein the light distribution structure includes at least one side at an angle to the substrate; and wherein the reflector extends up each of the angled sides. ### Claim 14 (depends on 1) The pixel structure according to claim 1, wherein the light conversion layer comprises quantum dots. ### Claim 15 (depends on 1) The pixel structure according to claim 1, wherein the light distribution structure comprises a transparent polymer material, including an index of refraction of greater than 1.5, surrounding the light source. ### Claim 16 (depends on 1) The pixel structure according to claim 1, wherein the light attenuator structure comprises an electrode mounted on the light source to couple the light source to an external power source. ### Claim 17 A pixel structure for a display comprising: a substrate; a light source to generate light mounted on or over the substrate; a light conversion layer to convert the light to a desired color; a light distribution structure to distribute the light from the light source onto the light conversion layer; and a reflector between the substrate and the light source to reflect light back through the light distribution structure and through the light conversion layer. ### Claim 18 (depends on 17) The pixel structure according to claim 17, wherein the light distribution structure includes at least one side at an angle to the substrate; and wherein the reflector extends up each of the angled sides.