# US 11,442,307 B2 · Backlight module, display module and assembling method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,442,307 B2 - Document ID: US11442307B2 - Status: Granted - Kind: B2 - Application number: 17/265,913 - Filed: 2020-07-28 - Published: 2022-04-14 - Granted: 2022-09-13 - Earliest claimed: 2019-10-31 - Assignees: K-Tronics (Suzhou) Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Applicants: K-Tronics (Suzhou) Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Inventors: Yunben Shen; Lihua Sheng; Zhou Lu; Feng Zhou - Web page: https://patentgrep.com/patent/US11442307B2 ## CPC - G02F 1/1336: {Illuminating devices} - G02B 6/0055: {Reflecting element, sheet or layer} - G02B 6/0088: {of the light guide or other optical sheets in the package} - G02F 1/133314: {Back frames} - G02F 1/133325: {Assembling processes} - G02F 1/133605: {including specially adapted reflectors} - G02F 1/133608: {including particular frames or supporting means} - G02F 2201/46: Fixing elements - 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 ## Abstract The present disclosure relates to a backlight module, a display module and an assembling method thereof. The backlight module includes: a backplane; a fixing member fixedly connected to the backplane; and an insertion clamp including a mounting portion fixedly connected to the fixing member, and a clamping portion for clamping to a circuit board inserted between the fixing member and the insertion clamp. ## Claims ### Claim 1 A backlight module, comprising: a backplane; a fixing member fixedly connected to the backplane; an insertion clamp comprising a mounting portion fixedly connected to the fixing member, and a clamping portion for clamping to a circuit board inserted between the fixing member and the insertion clamp; and at least one optical function film layer located on a front side of the backplane, and comprising a reflective sheet, wherein the fixing member and the insertion clamp are located between the reflective sheet and the backplane. ### Claim 2 A backlight module, comprising: a backplane; a fixing member fixedly connected to the backplane, wherein the fixing member comprises a first plate portion and a second plate portion located on a back side of the first plate portion; and an insertion clamp comprising a mounting portion fixedly connected to the fixing member, and a clamping portion for clamping to a circuit board inserted between the fixing member and the insertion clamp. ### Claim 3 (depends on 2) The backlight module according to claim 2, wherein the fixing member is fixedly connected to a back side of the backplane. ### Claim 4 (depends on 2) The backlight module according to claim 2, further comprising a frame or a bracket, wherein the frame or the bracket is fixedly connected to the backplane, and the fixing member is fixedly connected to the frame or the bracket. ### Claim 5 (depends on 2) The backlight module according to claim 2, wherein: the insertion clamp comprises a first insertion clamp for fixing a screen driving board of a liquid crystal panel to a back surface of the first plate portion; and the clamping portion of the first insertion clamp has a clamping slot for clamping to the screen driving board. ### Claim 6 (depends on 5) The backlight module according to claim 5, wherein the first insertion clamp further comprises an insertion guide portion located on one side of the clamping portion away from the mounting portion and having a guide slope. ### Claim 7 (depends on 5) The backlight module according to claim 5, wherein: the insertion clamp further comprises a second insertion clamp for fixing a main board of a display device at a position substantially parallel to the second plate portion, the second insertion clamp being substantially flush with the second plate portion; and the clamping portion of the second insertion clamp comprises a pair of hooks for clamping to the main board, the pair of hooks being arranged oppositely. ### Claim 8 (depends on 2) The backlight module according to claim 2, wherein: the fixing member further comprises a connection portion connecting the first plate portion and the second plate portion, the first plate portion, the connection portion and the second plate portion defining a guide rail groove; and the mounting portion of the insertion clamp is slidably assembled in the guide rail groove and fixedly connected to the second plate portion through a fastener. ### Claim 9 (depends on 8) The backlight module according to claim 8, wherein: the second plate portion is parallel to a light exiting surface of the backlight module; a plane where the first plate portion is located intersects with a plane where the second plate portion is located; and the guide rail groove has a wedge-shaped cross-section. ### Claim 10 (depends on 2) The backlight module according to claim 2, further comprising: at least one optical function film layer located on a front side of the backplane, and comprising a reflective sheet, wherein the fixing member and the insertion clamp are located between the reflective sheet and the backplane. ### Claim 11 (depends on 10) The backlight module according to claim 10, wherein: the reflective sheet comprises a flat portion and a folded portion located at a periphery of the flat portion and folded toward a light exiting surface of the backlight module; and the fixing member and the insertion clamp are located between the folded portion of the reflective sheet and the backplane. ### Claim 12 (depends on 10) The backlight module according to claim 10, further comprising: a light bar located between the reflective sheet and the backplane, wherein a light emitting chip of the light bar passes through a hole of the reflective sheet. ### Claim 13 (depends on 8) The backlight module according to claim 8, wherein the second plate portion and the connection portion are connected in a T shape, and the second plate portion has a first notch facing away from the insertion clamp. ### Claim 14 (depends on 4) The backlight module according to claim 4, wherein: the fixing member is fixedly connected to the bracket which comprises a first side portion, a second side portion, and a third side portion, wherein the first side portion and the second side portion are opposite to each other, and two ends of the third side portion are connected to the first side portion and the second side portion respectively; and the fixing member is arranged on a fourth side opposite to the third side portion, and fixedly connected to the first side portion and the second side portion respectively through fasteners. ### Claim 15 (depends on 14) The backlight module according to claim 14, wherein: the fixing member further comprises a folded portion connected to the first plate portion and folded toward an end side of the backlight module, wherein the folded portion has a second notch for accommodating a flexible circuit connection board of a liquid crystal panel. ### Claim 16 (depends on 2) A display module, comprising: the backlight module according to claim 2; the circuit board; and a liquid crystal panel. ### Claim 17 (depends on 16) The display module according to claim 16, wherein the circuit board is inserted between the fixing member and the insertion clamp of the backlight module. ### Claim 18 (depends on 16) The display module according to claim 16, wherein the circuit board comprises at least one of a screen driving board of the liquid crystal panel or a main board of a display device. ### Claim 19 An assembling method of a display module, comprising: assembling a liquid crystal panel on a front side of a backlight module, the backlight module comprising a backplane, a fixing member fixedly connected to the backplane, and an insertion clamp, the fixing member comprising a first plate portion and a second plate portion located on a back side of the first plate portion, the insertion clamp comprising a mounting portion fixedly connected to the fixing member, and a clamping portion; and inserting a circuit board between the fixing member and the clamping portion without turning over the backlight module and the liquid crystal panel. ### Claim 20 (depends on 19) The assembling method according to claim 19, wherein the circuit board comprises at least one of a screen driving board of the liquid crystal panel or a main board of a display device.