# US 10,310,174 B2 · Light source device and light source unit comprising the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,310,174 B2 - Document ID: US10310174B2 - Status: Granted - Kind: B2 - Application number: 15/658,095 - Filed: 2017-07-24 - Published: 2018-02-01 - Granted: 2019-06-04 - Earliest claimed: 2016-07-29 - Assignees: Japan Display Inc. - Applicants: Japan Display Inc. - Inventors: Ken Sugiyama - Web page: https://patentgrep.com/patent/US10310174B2 ## CPC - G02B 6/009: {of the light source in the package (G02B6/0021 takes precedence)} - G02B 6/0051: {Diffusing sheet or layer} - G02B 6/0053: {Prismatic sheet or layer; Brightness enhancement element, sheet or layer} - G02B 6/0055: {Reflecting element, sheet or layer} - G02B 6/0068: {Arrangements of plural sources, e.g. multi-colour light sources} - G02B 6/0073: {Light emitting diode [LED]} - G02B 6/0083: {Details of electrical connections of light sources to drivers, circuit boards, or the like} - H05K 1/0274: {Optical details, e.g. printed circuits comprising integral optical means (H05K1/0269 takes precedence; coupling light guides with opto-electronic components G02B6/42)} - H05K 1/147: {at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit (H05K1/148 takes precedence)} - H05K 1/181: associated with surface mounted components - H10H 20/8506: {Containers} - H10H 20/855: Optical field-shaping means, e.g. lenses - H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls - H10W 90/00: Package configurations - G02F 1/1333: Constructional arrangements; {Manufacturing methods}(G02F1/135, G02F1/136 take precedence) - H05K 2201/10106: Light emitting diode [LED] - H05K 2201/10136: Liquid Crystal display [LCD] - H05K 2201/10681: Tape Carrier Package [TCP]; Flexible sheet connector - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 - 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 ## Abstract According to one embodiment, a light source device includes a light-emitting chip, and a case in which the light-emitting chip is accommodated. The case includes a light-emitting surface which transmits light from the light-emitting chip, and a plurality of sidewalls extending so as to intersect the light-emitting surface. At least a part of the sidewalls is colored or painted in black. ## Claims ### Claim 1 A light source device comprising: a light-emitting chip; and a case in which the light-emitting chip is accommodated with a reflector, phosphor or sealing resin, and wires connected to the light-emitting chip, wherein the case comprises: a light-emitting surface which transmits light from the light-emitting chip; a bottom surface located on a side opposite to the light-emitting surface; and a plurality of sidewalls in contact with the reflector and extending from the bottom surface to the light-emitting surface so as to meet the light-emitting surface, and the sidewalls and the bottom surface are colored or painted in black. ### Claim 2 (depends on 1) The light source device of claim 1, wherein the case includes a mounting surface on which a pair of electrodes is provided, the sidewalls include a pair of long-sidewalls facing each other and a pair of short-sidewalls facing each other, and an outer surface of at least one of the long-sidewalls and the short-side sidewalls is black. ### Claim 3 (depends on 2) The light source device of claim 2, wherein the pair of electrodes is provided on the bottom surface such that the bottom surface forms the mounting surface. ### Claim 4 (depends on 3) The light source device of claim 3, wherein the pair of long-sidewalls is colored or painted in black. ### Claim 5 (depends on 2) The light source device of claim 2, wherein one of the long-sidewalls forms the mounting surface on which the pair of electrodes is provided, and the other long-sidewall and the pair of short-side sidewalls are colored or painted in black. ### Claim 6 (depends on 1) The light source device of claim 1, wherein two colors are applied to the case such that an internal side is formed of white resin, and an external side is formed of black resin. ### Claim 7 (depends on 1) The light source device of claim 1, wherein an outer surface of the case is painted in black. ### Claim 8 A light source unit comprising: a wiring board; and a plurality of light source devices on the wiring board, wherein each of the light source devices comprises a light-emitting chip, and a case in which the light-emitting chip is accommodated with a reflector, phosphor or sealing resin, and wires connected to the light-emitting chip, the case comprises a light-emitting surface which transmits light from the light-emitting chip, a bottom surface located on a side opposite to the light-emitting surface and a plurality of sidewalls in contact with the reflector and extending from the bottom surface to the light-emitting surface so as to meet the light-emitting surface, and the sidewalls and the bottom surface are colored or painted in black. ### Claim 9 (depends on 8) The light source unit of claim 8, wherein the case includes a mounting surface on which a pair of electrodes is provided, the mounting surface located on a side opposite to the light-emitting surface, and the sidewalls include a pair of long-sidewalls facing each other, and a pair of short-sidewalls facing each other. ### Claim 10 (depends on 9) The light source unit of claim 9, wherein the pair of long-sidewalls is colored or painted in black. ### Claim 11 A light source unit comprising: a wiring board; a plurality of light source devices on the wiring board, each of the light source devices comprising a light-emitting surface; and a black resinous member formed on both the wiring board and the light source devices and covering a surrounding area of each of the light source devices excluding the light-emitting surface. ### Claim 12 (depends on 11) The light source unit of claim 11, wherein each of the light source devices comprises a light-emitting chip, and a case in which the light-emitting chip is accommodated with a reflector, phosphor or sealing resin, and wires connected to the light-emitting chip, the case comprises: the light-emitting surface which transmits light from the light-emitting chip; a mounting surface on which a pair of electrodes is provided, the mounting surface located on a side opposite to the light-emitting surface and mounted on the wiring board; and a plurality of sidewalls extending so as to intersect the light-emitting surface, and the black resinous member is provided to cover the sidewalls of each of the light source devices.