# US 10,371,882 B2 · Method for manufacturing dimming structure, dimming structure, backlight module and display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,371,882 B2 - Document ID: US10371882B2 - Status: Granted - Kind: B2 - Application number: 15/982,031 - Filed: 2018-05-17 - Published: 2019-02-07 - Granted: 2019-08-06 - Earliest claimed: 2017-08-01 - Assignees: Boe Technology Group Co., Ltd. - Applicants: Boe Technology Group Co., Ltd.; Beijing BOE Display Technology Co., Ltd. - Inventors: Lianjie Qu; Huijuan Wang; Yonglian Qi; Bingqiang Gui; Fang Liu; Hebin Zhao; Huipeng Guo - Web page: https://patentgrep.com/patent/US10371882B2 ## CPC - G02B 6/0065: {Manufacturing aspects; Material aspects} - B29C 35/02: Heating or curing, e.g. crosslinking or vulcanizing {during moulding, e.g. in a mould}(cold vulcanisation B29C35/18 {; vulcanising tyres, presses therefor B29D30/0601}) - B29C 35/16: Cooling {(cooling extruded material B29C48/911; cooling preforms for blow moulding B29C49/6427; cooling blown articles B29C49/66; cooling tyres during post cure inflation B29D30/0643)} - G02B 6/0053: {Prismatic sheet or layer; Brightness enhancement element, sheet or layer} - G02B 6/0055: {Reflecting element, sheet or layer} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) ## Abstract The present disclosure relates to a manufacturing method for a light adjusting structure, a light adjusting structure, a backlight module and a display device. The manufacturing method includes: providing a light guide plate; forming a substrate having a plurality of micro structures; and placing the micro structures upside down on a light exit surface of the light guide plate; heating the light guide plate; adhering the tips of the micro structures to the light guide plate; cooling the light guide plate; and forming a first reflective layer on the side surface of each micro structure. ## Claims ### Claim 1 A manufacturing method for a light adjusting structure, comprising: providing a light guide plate; preparing a substrate with a plurality of micro structures; placing the micro structures upside down on a light exit surface of the light guide plate; heating the light guide plate; respectively adhering tips of the micro structures to the light guide plate; cooling the light guide plate; and forming a first reflective layer on a side surface of each of the micro structures. ### Claim 2 (depends on 1) The manufacturing method according to claim 1, wherein the step of preparing a substrate with a plurality of micro structures comprises: providing a base substrate; forming a photoresist master mold on the base substrate, and processing a surface of the photoresist master mold with a conduction treatment; taking the photoresist master mold after surface conduction treatment as an electroforming mold; and integrally forming micro structures and a substrate that carries the micro structures with the electroforming mold. ### Claim 3 (depends on 1) The manufacturing method according to claim 1, wherein the step of respectively adhering tips of the micro structures to the light guide plate comprises: pressing the substrate until the tip of each micro structure forms a surface contact with the light guide plate; or pressing the substrate until the tip of each micro structure is embedded into the light guide plate. ### Claim 4 (depends on 1) The manufacturing method according to claim 1, further comprising: at the same time of forming a first reflective layer on the side surface of each of the micro structures, forming a second reflective layer on at least one of the light exit surface of the light guide plate on which no micro structure is adhered and the surface of the substrate at the side facing the light guide plate on which no micro structure is adhered. ### Claim 5 (depends on 1) A light adjusting structure, wherein the light adjusting structure is manufactured with the manufacturing method according to claim 1. ### Claim 6 (depends on 5) The light adjusting structure according to claim 5, wherein a refractive index of each of the micro structures is substantially the same as a refractive index of the light guide plate. ### Claim 7 (depends on 6) The light adjusting structure according to claim 6, wherein the material of each of the micro structures is the same as the material of the light guide plate. ### Claim 8 (depends on 5) The light adjusting structure according to claim 5, wherein the side surface of each micro structure is a curved surface with a curvature decreasing gradually from the light guide plate in a direction away from the light guide plate. ### Claim 9 (depends on 5) A backlight module, comprising the light adjusting structure according to claim 5, and a backlight provided on a light incident side of the light guide plate. ### Claim 10 (depends on 9) A display device, comprising the backlight module according to claim 9. ### Claim 11 (depends on 2) The manufacturing method according to claim 2, further comprising: at the same time of forming a first reflective layer on the side surface of each of the micro structures, forming a second reflective layer on at least one of the light exit surface of the light guide plate on which no micro structure is adhered and the surface of the substrate at the side facing the light guide plate on which no micro structure is adhered. ### Claim 12 (depends on 3) The manufacturing method according to claim 3, further comprising: at the same time of forming a first reflective layer on the side surface of each of the micro structures, forming a second reflective layer on at least one of the light exit surface of the light guide plate on which no micro structure is adhered and the surface of the substrate at the side facing the light guide plate on which no micro structure is adhered. ### Claim 13 (depends on 2) A light adjusting structure, wherein the light adjusting structure is manufactured with the manufacturing method according to claim 2. ### Claim 14 (depends on 3) A light adjusting structure, wherein the light adjusting structure is manufactured with the manufacturing method according to claim 3. ### Claim 15 (depends on 4) A light adjusting structure, wherein the light adjusting structure is manufactured with the manufacturing method according to claim 4. ### Claim 16 (depends on 6) The light adjusting structure according to claim 6, wherein the side surface of each micro structure is a curved surface with a curvature decreasing gradually from the light guide plate in a direction away from the light guide plate. ### Claim 17 (depends on 7) The light adjusting structure according to claim 7, wherein the side surface of each micro structure is a curved surface with a curvature decreasing gradually from the light guide plate in a direction away from the light guide plate. ### Claim 18 (depends on 6) A backlight module, comprising the light adjusting structure according to claim 6, and a backlight provided on a light incident side of the light guide plate. ### Claim 19 (depends on 7) A backlight module, comprising the light adjusting structure according to claim 7, and a backlight provided on a light incident side of the light guide plate. ### Claim 20 (depends on 8) A backlight module, comprising the light adjusting structure according to claim 8, and a backlight provided on a light incident side of the light guide plate.