# US 10,120,124 B2 · Backlight module, method of assembling the 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 10,120,124 B2 - Document ID: US10120124B2 - Status: Granted - Kind: B2 - Application number: 15/345,807 - Filed: 2016-11-08 - Published: 2017-07-27 - Granted: 2018-11-06 - Earliest claimed: 2016-01-25 - Assignees: Boe Technology Group Co., Ltd.; K-Tronics (Suzhou) Technology Co., Ltd. - Applicants: Boe Technology Group Co., Ltd.; K-Tronics (Suzhou) Technology Co., Ltd. - Inventors: Shaofeng Niu; Rongshun Zhang; Chuanbo Zou - Web page: https://patentgrep.com/patent/US10120124B2 ## CPC - G02B 6/0088: {of the light guide or other optical sheets in the package} - G02B 6/009: {of the light source in the package (G02B6/0021 takes precedence)} - G02F 1/133608: {including particular frames or supporting means} - G02B 6/0086: {Positioning aspects} - G02F 1/133308: {Support structures for LCD panels, e.g. frames or bezels} - G02F 1/133615: {Edge-illuminating devices, i.e. illuminating from the side} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - 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 ## Abstract A backlight module, a method of assembling the backlight module, and a display device are disclosed. The backlight module includes a fixing frame that has a light exit and a side plate provided with a first opening; an optical unit that is inserted into the fixing frame through the first opening and has a light emitting side opposite to the light exit; and a sealing piece that is engaged with the first opening to close the first opening. Embodiments of the present disclosure can reduce the manufacture difficulty and also material cost of the backlight module. ## Claims ### Claim 1 A backlight module, comprising: a fixing frame that has a light exit and a side plate provided with a first opening; an optical unit that is inserted into the fixing frame through the first opening and has a light emitting side opposite to the light exit in the fixing frame; and a sealing piece that is engaged with the first opening to close the first opening, wherein the fixing frame comprises a support plate and a limit plate disposed in opposite to the support plate, the support plate and the limit plate are spaced by the side plate, which is disposed along a circumstance of the support plate and is connected to both of the support plate and the limit plate, and the light exit is disposed in the limit plate, and wherein the sealing piece is provided with a hook at a surface facing towards an exterior of the fixing frame, the hook is formed by lifting structures surrounding a notch provided in the surface of the sealing piece facing towards the exterior of the fixing frame, and the backlight module is connected to an external frame through the hook. ### Claim 2 (depends on 1) The backlight module according to claim 1, wherein the optical unit comprises a light guide plate; the sealing piece is provided with a light bar on a surface facing towards an interior of the fixing frame; and upon the sealing piece closing the first opening, the light bar is opposite to the light guide plate. ### Claim 3 (depends on 2) The backlight module according to claim 2, wherein the light emitting side of the optical unit has an edge contacted with the limit plate, a side of the optical unit opposite to the light emitting side is contacted with the support plate, a light incident side of the optical unit is contacted with the light bar, and all the remaining sides of the optical unit are contacted with the side plate. ### Claim 4 (depends on 1) The backlight module according to claim 1, wherein the sealing piece is made of metallic material. ### Claim 5 (depends on 1) The backlight module according to claim 1, wherein the sealing piece further includes a side edge, and upon the sealing piece closing the first opening, the side edge is contacted with an external surface of the fixing frame, and the sealing piece is fixed with the fixing frame through the side edge. ### Claim 6 (depends on 5) The backlight module according to claim 5, further comprising a fixer; the side edge of the sealing piece is provided with a first fixing hole, and at least one of the limit plate and the support plate is provided with a second fixing hole corresponding to the first fixing hole; and the fixer is configured to be passing through the first fixing hole and the second fixing hole to fix the sealing piece with the fixing frame. ### Claim 7 (depends on 5) The backlight module according to claim 5, wherein the sealing piece is formed as a U-shaped cover, the U-shaped cover comprises a bottom plate and two groups of side edges connected to the bottom plate, each of the two groups of side edges comprises two side edges which are disposed in opposite to each other; upon the U-shaped cover closing the first opening, the side edges in one of the two groups are contacted with an external surface of the side plate of the fixing frame, and the side edges in the other one of the two groups are contacted with the support plate and the limit plate, respectively; and the two groups of side edges are all fixed with the fixing frame. ### Claim 8 (depends on 6) The backlight module according to claim 6, wherein a plurality of first fixing holes and a plurality of second fixing holes are provided; and the first fixing holes are uniformly distributed on the side edge of the sealing piece, and the second fixing holes are uniformly distributed on at least one of the limit plate and the support plate corresponding to the first fixing holes. ### Claim 9 (depends on 6) The backlight module according to claim 6, wherein the fixer is a screw, and the first fixing hole and the second fixing hole both are threaded hole. ### Claim 10 (depends on 2) The backlight module according to claim 2, wherein the light bar is adhered to the sealing piece through thermal conductive adhesive. ### Claim 11 (depends on 1) A display device comprising the backlight module according to claim 1. ### Claim 12 (depends on 1) The backlight module according to claim 1, wherein the fixing frame is formed Integrally by Injection molding process from synthetic resin material. ### Claim 13 A backlight module, comprising: a fixing frame that has a light exit and a side plate provided with a first opening; an optical unit that is inserted into the fixing frame through the first opening and has a light emitting side opposite to the light exit in the fixing frame; and a sealing piece that is engaged with the first opening to close the first opening, wherein the fixing frame comprises a support plate and a limit plate disposed in opposite to the support plate, the support plate and the limit plate are spaced by the side plate, which is disposed along a circumstance of the support plate and is connected to both of the support plate and the limit plate, and the light exit is disposed in the limit plate, and wherein the fixing frame is made of synthetic resin material, the sealing piece is provided with a hook at a surface facing towards an exterior of the fixing frame, the hook is formed by lifting structures surrounding a notch provided in the surface of the sealing piece facing towards the exterior of the fixing frame, and the backlight module is connected to an external frame through the hook.