# US 2014/0192552 A1 · Backlight module > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0192552 A1 - Document ID: US20140192552A1 - Status: Published application - Kind: A1 - Application number: 13/817,745 - Filed: 2013-01-14 - Published: 2014-07-10 - Earliest claimed: 2013-01-06 - Assignees: Shenzhen China Star Optoelectronics Technology Co., Ltd. - Applicants: Shenzhen China Star Optoelectronics Technology Co. Ltd. - Inventors: Hu He - Web page: https://patentgrep.com/patent/US20140192552A1 ## CPC - G02B 6/0028: {Light guide, e.g. taper} - G02B 6/0066: {characterised by the light source being coupled to the light guide} - G02B 6/0031: {Reflecting element, sheet or layer} - G02B 6/0036: {2-D arrangement of prisms, protrusions, indentations or roughened surfaces} - G02B 6/0038: {Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide} - G02B 6/0078: {Side-by-side arrangements, e.g. for large area displays} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract The present invention provides a backlight module which contains a collection device for collecting sunlight, an optical fiber cable, at least a light guide device connecting the collection device through the optical fiber cable, and a diffusion device and an optical member fixed at a distance from a side of each light guide device. Sunlight is collected by the collection device and is introduced into each light guide device; and each light guide device then guides and projects the collected sunlight onto the diffusion device and the optical member sequentially. The energy consumption and environmental friendliness of the backlight module of the present invention are greatly enhanced. The illumination efficiency and lighting uniformity are also improved by a simplified structure. ## Claims ### Claim 1 A backlight module, comprising: a collection device for collecting sunlight; an optical fiber cable; at least a light guide device connecting the collection device through the optical fiber cable; and a diffusion device and an optical member fixed at a distance from a side of each light guide device; wherein sunlight is collected by the collection device and is introduced into each light guide device; each light guide device then guides and projects the collected sunlight onto the diffusion device and the optical member sequentially; each light guide device has an incident end and a distant end; the optical fiber cable has one end connected to the collection device and the other end connected to the incident end of each light guide device; and the collected sunlight travels along each light guide device from the incident end towards the distant end. ### Claim 2 (depends on 1) The backlight module as claimed in claim 1, wherein a reflection piece is attached to the distant end of each light guide device to reflect light not guided out by the light guide device. ### Claim 3 (depends on 2) The backlight module as claimed in claim 2, wherein there are at least two light guide devices; each pair of adjacent light guide devices has a specific distance in between; and the incident ends of the light guide devices are positioned at a same side of the backlight module. ### Claim 4 (depends on 1) The backlight module as claimed in claim 1, wherein each light guide device is a light guide strip. ### Claim 5 (depends on 4) The backlight module as claimed in claim 4, wherein each light guide device has a flat top side, or has prism structure on the top side. ### Claim 6 (depends on 1) The backlight module as claimed in claim 1, wherein the diffusion device is a diffusion plate; and the optical member is an optical film. ### Claim 7 A backlight module, comprising: a collection device for collecting sunlight; an optical fiber cable; at least a light guide device connecting the collection device through the optical fiber cable; and a diffusion device and an optical member fixed at a distance from a side of each light guide device; wherein sunlight is collected by the collection device and is introduced into each light guide device; each light guide device then guides and projects the collected sunlight onto the diffusion device and the optical member sequentially; each light guide device has both ends as incident ends; and the optical fiber cable has one end connected to the collection device and the other end connected to the incident ends of each light guide device. ### Claim 8 (depends on 7) The backlight module as claimed in claim 7, wherein there are at least two light guide devices; and each pair of adjacent light guide devices has a specific distance in between. ### Claim 9 A backlight module, comprising: a collection device for collecting sunlight; an optical fiber cable; at least a light guide device connecting the collection device through the optical fiber cable; and a diffusion device and an optical member fixed at a distance from a side of each light guide device; wherein sunlight is collected by the collection device and is introduced into each light guide device; and each light guide device then guides and projects the collected sunlight onto the diffusion device and the optical member sequentially. ### Claim 10 (depends on 9) The backlight module as claimed in claim 9, wherein a plurality of grid dots are configured along a bottom side of each light guide device; and the collected sunlight is guided out of each light guide device by the grid dots. ### Claim 11 (depends on 10) The backlight module as claimed in claim 10, wherein the grid dots are outwardly bulged or inwardly indented structures. ### Claim 12 (depends on 11) The backlight module as claimed in claim 11, wherein the grid dots are uniformly arranged along the bottom side of each light guide device by printing or injection molding; and the backlight module further comprises a reflection device positioned beneath the grid dots of each light guide device. ### Claim 13 (depends on 12) The backlight module as claimed in claim 12, wherein each light guide device has an incident end and a distant end; the optical fiber cable has one end connected to the collection device and the other end connected to the incident end of each light guide device; and the collected sunlight travels along each light guide device from the incident end towards the distant end. ### Claim 14 (depends on 13) The backlight module as claimed in claim 13, wherein a reflection piece is attached to the distant end of each light guide device to reflect light not guided out by the light guide device. ### Claim 15 (depends on 13) The backlight module as claimed in claim 13, wherein there are at least two light guide devices; each pair of adjacent light guide devices has a specific distance in between; and the incident ends of the light guide devices are positioned at a same side of the backlight module. ### Claim 16 (depends on 12) The backlight module as claimed in claim 12, wherein each light guide device has both ends as incident ends; and the optical fiber cable has one end connected to the collection device and the other end connected to the incident ends of each light guide device. ### Claim 17 (depends on 16) The backlight module as claimed in claim 16, wherein there are at least two light guide devices; and each pair of adjacent light guide devices has a specific distance in between. ### Claim 18 (depends on 9) The backlight module as claimed in claim 9, wherein each light guide device is a light guide strip. ### Claim 19 (depends on 18) The backlight module as claimed in claim 18, wherein each light guide device has a flat top side, or has prism structure on the top side. ### Claim 20 (depends on 9) The backlight module as claimed in claim 9, wherein the diffusion device is a diffusion plate; and the optical member is an optical film.