# US 8,540,413 B2 · Backlight assembly and display device having the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,540,413 B2 - Document ID: US8540413B2 - Status: Granted - Kind: B2 - Application number: 12/509,257 - Filed: 2009-07-24 - Published: 2009-11-19 - Granted: 2013-09-24 - Earliest claimed: 2006-10-26 - Assignees: Samsung Display Co., Ltd. - Applicants: Ju-Young Yoon; Eun-Jeong Kang; Gl-Cherl Kim; Moon-Hwan Chang - Inventors: Ju-Young Yoon; Eun-Jeong Kang; Gl-Cherl Kim; Moon-Hwan Chang - Web page: https://patentgrep.com/patent/US8540413B2 ## CPC - G02B 6/0068: {Arrangements of plural sources, e.g. multi-colour light sources} - G02B 6/0083: {Details of electrical connections of light sources to drivers, circuit boards, or the like} - G02B 6/0055: {Reflecting element, sheet or layer} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract A backlight assembly includes a light guiding plate, a driving board, a light emitting chip and a flexible board. The light guiding plate has a plate shape. The driving board is disposed substantially parallel with a side surface of the light guiding plate to face the side surface of the light guiding plate. The light emitting chip is formed on a surface of the driving board to generate light toward the side surface of the light guiding plate. The flexible board has a connection wiring that provides a power source to the driving board. The driving board is disposed on the flexible board. ## Claims ### Claim 1 A light generating unit comprising: a flexible film; a plurality of driving boards disposed on the flexible film in a line shape; and a plurality of light emitting chips formed on each of the driving boards to generate light, the plurality of light emitting chips being continuously disposed in a line shape along a longitudinal direction of the flexible film, wherein a connection wiring that transmits power from a power source to the driving boards is formed on the flexible film, wherein the flexible film comprises a power connection portion located at and extending from an end of the line shape of the plurality of light emitting chips in the longitudinal direction of the flexible film, a board-mounted portion on which the driving boards are disposed, and an extended portion extending from the board mounted portion, wherein the extended portion is bent with respect to the board mounted portion to extend onto and contact and upper surface of a light guiding plate. ### Claim 2 (depends on 1) The light generating unit of claim 1, wherein the flexible film has a larger area than the driving boards. ### Claim 3 (depends on 2) The light generating unit of claim 2, wherein the connection wiring is formed on the board-mounted portion and the extended portion. ### Claim 4 (depends on 3) The light generating unit of claim 3, wherein the extended portion is bent substantially perpendicular to the board-mounted portion. ### Claim 5 (depends on 3) The light generating unit of claim 3, further comprising a reflective layer formed on the extended portion to reflect light. ### Claim 6 (depends on 3) The light generating unit of claim 3, wherein the power connection portion is electrically connected to at least one of the board-mounted portion and the extended portion, and electrically connected to an externally provided power supply part. ### Claim 7 (depends on 1) The light generating unit of claim 1, wherein the plurality of light emitting chips are linearly formed along a longitudinal direction of the driving boards. ### Claim 8 (depends on 7) The light generating unit of claim 7, wherein the light emitting chips are electrically connected in at least one of series and parallel through the connection wiring. ### Claim 9 (depends on 8) The light generating unit of claim 8, wherein the light emitting chips comprise red light emitting chips, green light emitting chips and blue light emitting chips, and the red, green and blue light emitting chips are disposed on each driving board in turn, along the longitudinal direction of each driving board. ### Claim 10 (depends on 9) The light generating unit of claim 9, wherein the red light emitting chips are electrically connected in at least one of series and parallel through the connection wiring, the green light emitting chips are electrically connected in at least one of series and parallel through the connection wiring, and the blue light emitting chips are electrically connected in at least one of series and parallel through the connection wiring. ### Claim 11 (depends on 7) The light generating unit of claim 7, wherein the light emitting chips comprise white light emitting chips. ### Claim 12 (depends on 1) The light generating unit of claim 1, wherein the driving boards have flexibility. ### Claim 13 A backlight assembly comprising: a light guiding plate; a flexible film facing at least one surface of the light guiding plate; a plurality of driving boards disposed on the flexible film to face the light guiding plate in a line shape; and a plurality of light emitting chips formed on each of the driving boards to generate light toward the light guiding plate, the plurality of the light emitting chips being continuously disposed in a line shape along a longitudinal direction of the flexible film, wherein a connection wiring that transmits power from a power source to the driving boards is formed on the flexible film, wherein the flexible film comprises: a power connection portion located at and extending from an end of the line shape of the plurality of light emitting chips in the longitudinal direction of the flexible film, a board mounted portion on which the driving boards are disposed, and an extended portion extending from the board mounted portion, wherein the extended portion is bent with respect to the board mounted portion to extend onto and contact an upper surface of the light guiding plate. ### Claim 14 (depends on 13) The backlight assembly of claim 13, wherein a width of the driving boards is less than or substantially equal to a thickness of the light guiding plate. ### Claim 15 (depends on 13) The backlight assembly of claim 13, wherein the flexible film has a larger area than the driving boards. ### Claim 16 (depends on 15) The backlight assembly of claim 15, wherein the connection wiring is formed on the board-mounted portion and the extended portion. ### Claim 17 (depends on 16) The backlight assembly of claim 16, wherein the extended portion overlaps a lower surface of the light guiding plate. ### Claim 18 (depends on 16) The backlight assembly of claim 16, wherein the extended portion comprises: a first sub-extended portion overlapping a lower surface of the light guiding plate; and a second sub-extended portion overlapping the upper surface of the light guiding plate. ### Claim 19 (depends on 18) The backlight assembly of claim 18, further comprising a reflective sheet disposed between the lower surface of the light guiding plate and the extended portion.