# US 2014/0192288 A1 · Liquid crystal module with edge-lit backlight and liquid crystal display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0192288 A1 - Document ID: US20140192288A1 - Status: Published application - Kind: A1 - Application number: 13/810,229 - Filed: 2013-01-10 - Published: 2014-07-10 - Earliest claimed: 2013-01-06 - Assignees: Shezhen China Star Optoelectronics Technology Co., Ltd. - Inventors: Quan Li - Web page: https://patentgrep.com/patent/US20140192288A1 ## CPC - G02B 6/009: {of the light source in the package (G02B6/0021 takes precedence)} - G02B 6/0091: {of the light source relative to the light guide (G02B6/0021 takes precedence)} - G02B 6/0068: {Arrangements of plural sources, e.g. multi-colour light sources} - G02B 6/0073: {Light emitting diode [LED]} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract The present invention provides a liquid crystal module with edge-lit backlight, which includes aluminum extrusion, edge-lit backlight source, light guiding plate (LGP), optical film set, mold frame, and at least a magnetic device, disposed with at least an attaching surface, for attaching to backlight source substrate, and an outer surface protruding beyond the light-emitting surface of LEDs; the outer surface of magnetic device near or pressing against LGP and having a difference in height levels from light-emitting surface of LEDs. The present invention also discloses a liquid crystal display device adopting the above liquid crystal module with edge-lit backlight. As such, the present invention can prevent the coupling optical distance from being too small, improve the endurance of the impact on the backlight and improve the backlight life span. ## Claims ### Claim 1 A liquid crystal module with edge-lit backlight, which at least comprises: an aluminum extrusion with aluminum extrusion vertical plate; an edge-lit backlight source, disposed on inner side wall of the aluminum extrusion vertical plate, the backlight source comprising: a backlight source substrate and a plurality of LEDs disposed on the backlight source substrate with spacing; a light guiding plate (LGP), disposed with an incident light surface and a light-emitting surface, the incident light surface facing the light-emitting surface of the LEDs of the edge-lit backlight source; an optical film set, located above the LGP, facing the light-emitting surface of the LGP; a mold frame, located on outer side of the aluminum extrusion; and at least a magnetic device, disposed with at least an attaching surface, for attaching to a nickel-plated layer disposed on the backlight source substrate between at least two LEDs or an iron layer wrapped in the backlight source substrate between at least two LEDs, and an outer surface protruding beyond the light-emitting surface of LEDs; the outer surface of the magnetic device facing the side of the LGP and having a difference in height levels from the light-emitting surface of the LEDs. ### Claim 2 (depends on 1) The liquid crystal module with edge-lit backlight as claimed in claim 1, characterized in that the difference in height levels for the outer surface of the magnetic device protruding beyond the light-emitting surface of the LEDs is 0.3-1.5 mm. ### Claim 3 (depends on 2) The liquid crystal module with edge-lit backlight as claimed in claim 2, characterized in that the outer surface of the magnetic device is close to or presses against the LGP. ### Claim 4 (depends on 3) The liquid crystal module with edge-lit backlight as claimed in claim 3, characterized in that the aluminum extrusion comprises an aluminum extrusion bottom plate and an aluminum extrusion vertical plate extended from and perpendicular to the aluminum extrusion bottom plate. ### Claim 5 (depends on 4) The liquid crystal module with edge-lit backlight as claimed in claim 4, characterized in that the backlight source substrate is an aluminum plate or a glass fabric substrate. ### Claim 6 A liquid crystal module with edge-lit backlight, which at least comprises: an aluminum extrusion with aluminum extrusion vertical plate; an edge-lit backlight source, disposed on inner side wall of the aluminum extrusion vertical plate, the backlight source comprising: a backlight source substrate and a plurality of LEDs disposed on the backlight source substrate with spacing; a light guiding plate (LGP), disposed with an incident light surface and a light-emitting surface, the incident light surface facing the light-emitting surface of the LEDs of the edge-lit backlight source; an optical film set, located above the LGP, facing the light-emitting surface of the LGP; a mold frame, located on outer side of the aluminum extrusion; and at least a magnetic device, disposed with at least an attaching surface, for attaching to the backlight source substrate, and an outer surface protruding beyond the light-emitting surface of LEDs; the outer surface of the magnetic device facing the side of the LGP and having a difference in height levels from the light-emitting surface of the LEDs. ### Claim 7 (depends on 6) The liquid crystal module with edge-lit backlight as claimed in claim 6, characterized in that the difference in height levels for the outer surface of the magnetic device protruding beyond the light-emitting surface of the LEDs is 0.3-1.5 mm. ### Claim 8 (depends on 7) The liquid crystal module with edge-lit backlight as claimed in claim 7, characterized in that the magnetic device is an NdFeB magnet block. ### Claim 9 (depends on 8) The liquid crystal module with edge-lit backlight as claimed in claim 8, characterized in that the aluminum extrusion comprises an aluminum extrusion bottom plate and an aluminum extrusion vertical plate extended from and perpendicular to the aluminum extrusion bottom plate. ### Claim 10 (depends on 9) The liquid crystal module with edge-lit backlight as claimed in claim 9, characterized in that the backlight source substrate is an aluminum plate or a glass fabric substrate. ### Claim 11 (depends on 10) The liquid crystal module with edge-lit backlight as claimed in claim 10, characterized in that a plurality of LEDs is disposed on the backlight source substrate with spacing, a nickel-plated layer is disposed on the backlight source substrate between at least two LEDs, and the attaching surface of the magnetic device is attached to the nickel-plated layer. ### Claim 12 (depends on 10) The liquid crystal module with edge-lit backlight as claimed in claim 10, characterized in that a plurality of LEDs is disposed on the backlight source substrate with spacing, an iron layer is wrapped inside the backlight source substrate between at least two LEDs, and the attaching surface of the magnetic device is attached to the iron layer. ### Claim 13 A liquid crystal display device, which comprises a liquid crystal module with edge-lit backlight, the edge-lit backlight further comprising: an aluminum extrusion with aluminum extrusion vertical plate; an edge-lit backlight source, disposed on inner side wall of the aluminum extrusion vertical plate, the backlight source comprising: a backlight source substrate and a plurality of LEDs disposed on the backlight source substrate with spacing; a light guiding plate (LGP), disposed with an incident light surface and a light-emitting surface, the incident light surface facing the light-emitting surface of the LEDs of the edge-lit backlight source; an optical film set, located above the LGP, facing the light-emitting surface of the LGP; a mold frame, located on outer side of the aluminum extrusion; and at least a magnetic device, disposed with at least an attaching surface, for attaching to a nickel-plated layer disposed on the backlight source substrate between at least two LEDs or an iron layer wrapped in the backlight source substrate between at least two LEDs, and an outer surface protruding beyond the light-emitting surface of LEDs; the outer surface of the magnetic device facing the side of the LGP and having a difference in height levels from the light-emitting surface of the LEDs. ### Claim 14 (depends on 13) The liquid crystal display device as claimed in claim 13, characterized in that the magnetic device is an NdFeB magnet block. ### Claim 15 (depends on 14) The liquid crystal display device as claimed in claim 14, characterized in that the difference in height levels for the outer surface of the magnetic device protruding beyond the light-emitting surface of the LEDs is 0.3-1.5 mm. ### Claim 16 (depends on 15) The liquid crystal display device as claimed in claim 15, characterized in that the outer surface of the magnetic device is close to or presses against the LGP. ### Claim 17 (depends on 16) The liquid crystal display device as claimed in claim 16, characterized in that the aluminum extrusion comprises an aluminum extrusion bottom plate and an aluminum extrusion vertical plate extended from and perpendicular to the aluminum extrusion bottom plate. ### Claim 18 (depends on 17) The liquid crystal display device as claimed in claim 17, characterized in that the backlight source substrate is an aluminum plate or a glass fabric substrate.