# US 2014/0192292 A1 · Positioning structure for light-guiding plate and back frame, backlight module and liquid crystal display device thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0192292 A1 - Document ID: US20140192292A1 - Status: Published application - Kind: A1 - Application number: 13/813,158 - Filed: 2013-01-10 - Published: 2014-07-10 - Earliest claimed: 2013-01-06 - Assignees: Shenzhen China Star Optoelectronics Technology Co., Ltd. - Inventors: Quan Li - Web page: https://patentgrep.com/patent/US20140192292A1 ## CPC - G02B 6/0088: {of the light guide or other optical sheets in the package} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract The present invention provides a positioning structure for light-guiding plate (LGP) and back frame, backlight module and liquid crystal display device thereof, wherein LGP disposed inside the back frame, first side inner wall of back frame disposed with a plurality of LEDs, second side inner wall adjacent to first side inner wall disposed with first magnetic body, a side of LGP corresponding to second side inner wall disposed with attachment body; first magnetic body and attachment body correspondingly attached, third side inner wall of back frame opposite to second side inner wall disposed with buffer plate, fourth side inner wall of back frame disposed with second magnetic body, a side of LGP corresponding to fourth side inner wall disposed with attachment body; second magnetic body and attachment body correspondingly attached. As such, back frame and LGP are firmly positioned and fixed to improve assembly yield arte. ## Claims ### Claim 1 A positioning structure for light-guiding plate (LGP) and back frame, wherein the LGP being disposed inside the back frame, and a first side inner wall of the back frame being disposed with a plurality of LEDs, a second side inner wall adjacent to the first side inner wall being disposed with at least a first magnetic body, a side of the LGP corresponding to the second side inner wall being disposed with an attachment body corresponding to the first magnetic body; the first magnetic body and the attachment body being correspondingly attached, a third side inner wall of the back frame opposite to the second side inner wall being disposed with at least a buffer plate, a fourth side inner wall of the back frame opposite to the first side inner wall being disposed with at least a second magnetic body, a side of the LGP corresponding to the fourth side inner wall being disposed with an attachment body corresponding to the second magnetic body; the second magnetic body and the attachment body being correspondingly attached. ### Claim 2 (depends on 1) The positioning structure for LGP and back frame as claimed in claim 1, wherein attachment body is a magnetic metal plate. ### Claim 3 (depends on 1) The positioning structure for LGP and back frame as claimed in claim 1, wherein the first magnetic body and the second magnetic body are both magnets. ### Claim 4 (depends on 1) The positioning structure for LGP and back frame as claimed in claim 1, wherein he attachment body is adhered to the side of the LGP by an adhesive, and the adhesive is acrylic glue. ### Claim 5 (depends on 4) The positioning structure for LGP and back frame as claimed in claim 4, wherein a surface of the attachment body contacting the adhesive is disposed with a reflective film layer. ### Claim 6 (depends on 5) The positioning structure for LGP and back frame as claimed in claim 5, wherein the reflective film layer is a silver reflective film layer. ### Claim 7 A backlight module, which comprises a mold frame, at least an optical film, and a positioning structure for light-guiding plate (LGP) and back frame; wherein in the positioning structure for the LGP and the back frame, the LGP being disposed inside the back frame, and a first side inner wall of the back frame being disposed with a plurality of LEDs, a second side inner wall adjacent to the first side inner wall being disposed with at least a first magnetic body, a side of the LGP corresponding to the second side inner wall being disposed with an attachment body corresponding to the first magnetic body; the first magnetic body and the attachment body being correspondingly attached, a third side inner wall of the back frame opposite to the second side inner wall being disposed with at least a buffer plate, a fourth side inner wall of the back frame opposite to the first side inner wall being disposed with at least a second magnetic body, a side of the LGP corresponding to the fourth side inner wall being disposed with an attachment body corresponding to the second magnetic body; the second magnetic body and the attachment body being correspondingly attached. ### Claim 8 (depends on 7) The backlight module as claimed in claim 7, wherein attachment body is a magnetic metal plate. ### Claim 8 (depends on 7) The backlight module as claimed in claim 7, wherein the first magnetic body and the second magnetic body are both magnets. ### Claim 10 (depends on 7) The backlight module as claimed in claim 7, wherein he attachment body is adhered to the side of the LGP by an adhesive, and the adhesive is acrylic glue. ### Claim 11 (depends on 10) The backlight module as claimed in claim 10, wherein a surface of the attachment body contacting the adhesive is disposed with a reflective film layer. ### Claim 12 (depends on 11) The backlight module as claimed in claim 11, wherein the reflective film layer is a silver reflective film layer. ### Claim 13 A liquid crystal display device, which comprises a backlight module, a display screen and an outer frame, the backlight module further comprising a mold frame, at least an optical film, and a positioning structure for light-guiding plate (LGP) and back frame; the optical film being disposed on the LGP and being fixed by the mold frame, the display screen being disposed on the mold frame and being fixed by the outer frame; wherein in the positioning structure for the LGP and the back frame, the LGP being disposed inside the back frame, and a first side inner wall of the back frame being disposed with a plurality of LEDs, a second side inner wall adjacent to the first side inner wall being disposed with at least a first magnetic body, a side of the LGP corresponding to the second side inner wall being disposed with an attachment body corresponding to the first magnetic body; the first magnetic body and the attachment body being correspondingly attached, a third side inner wall of the back frame opposite to the second side inner wall being disposed with at least a buffer plate, a fourth side inner wall of the back frame opposite to the first side inner wall being disposed with at least a second magnetic body, a side of the LGP corresponding to the fourth side inner wall being disposed with an attachment body corresponding to the second magnetic body; the second magnetic body and the attachment body being correspondingly attached. ### Claim 14 (depends on 13) The liquid crystal display device as claimed in claim 13, wherein attachment body is a magnetic metal plate. ### Claim 15 (depends on 13) The liquid crystal display device as claimed in claim 13, wherein the first magnetic body and the second magnetic body are both magnets. ### Claim 16 (depends on 13) The liquid crystal display device as claimed in claim 13, wherein he attachment body is adhered to the side of the LGP by an adhesive, and the adhesive is acrylic glue. ### Claim 17 (depends on 16) The liquid crystal display device as claimed in claim 16, wherein a surface of the attachment body contacting the adhesive is disposed with a reflective film layer. ### Claim 18 (depends on 17) The liquid crystal display device as claimed in claim 17, wherein the reflective film layer is a silver reflective film layer.