LIGHT MODULE

• US 20110069495A1
• Filed: 09/16/2010
• Published: 03/24/2011
• Est. Priority Date: 09/18/2009
• Status: Active Grant

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Electric Works Company Limited (Panasonic Holdings Corporation)
• Inventors: ANAMI, Shinichi, TANAHASI, Osamu, SUMIYAMA, Shigetsugu, FUKANO, Satosi, KAWACHI, Hideharu, SAIMI, Motohiro, HAYASI, Sintarou
• Granted Patent: US 8,764,209 B2
• Time in Patent Office: Days
• US Class Current: 362/311.01
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/133311 Environmental protection, e.g. against dust or humidity
• CPC Class Codes: G02F 1/133606 including a specially adapted diffusing, scattering or light controlling members
• CPC Class Codes: G02F 1/133608 including particular frames or supporting means
• CPC Class Codes: G02F 2201/50 Protective arrangements
• CPC Class Codes: H10K 50/84 Passivation; Containers; Encapsulations
• CPC Class Codes: H10K 50/85 Arrangements for extracting light from the devices
• CPC Class Codes: H10K 50/88 Terminals, e.g. bond pads

Abstract

A light module 1 includes a planar light emitting device 2, a wiring board 3, and an optical sheet 4. The wiring board 3 has a hole 8 for accommodating the planar light emitting device 2. The optical sheet 4 holds the planar light emitting device 2 and the wiring board 3 such that the planar light emitting device 2 accommodated in the hole 8 of the wiring board 3 and the wiring board 3 are flush with each other on the light emitting surface side of the light module 1. The optical sheet 4 holds the planar light emitting device 2 and the wiring board 3, and prevents dust and moisture from entering the inside the light module 1. This eliminates the necessity for the light module 1 to include a casing, packing, and the like. Therefore, the thickness of the module can be reduced.

Claims

1. A light module including a planar light emitting device, comprising:

a wiring board on which a wiring pattern for feeding power to the planar light emitting device is formed; and

a drip-proof optical sheet, provided on a light emitting surface of the planar light emitting device, for adjusting distribution of light emitted from the planar light emitting device, wherein

the planar light emitting device is accommodated in a hole that is formed in the wiring board, and

the planar light emitting device accommodated in the hole of the wiring board and the wiring board are fixed on the optical sheet in a manner that the planar light emitting device and the wiring board are flush with each other on the light emitting surface side of the light module, such that the optical sheet covers, at the light emitting surface side of the light module, the planar light emitting device and a boundary formed between the planar light emitting device and the wiring board.

2. The light module according to claim 1, wherein

electrodes of the planar light emitting device and the wiring pattern of the wiring board are electrically connected by aluminum wires, and

the aluminum wires are clad with an ultraviolet curable resin.

3. The light module according to claim 2, wherein the wiring board and the optical sheet have the same external shape.

4. The light module according to claim 3, wherein multiple portions of the wiring board that are arranged on the optical sheet form the hole of the wiring board for accommodating the planar light emitting device.

5. The light module according to claim 4, wherein the planar light emitting device and the wiring board are bonded onto the optical sheet by an adhesive.

6. The light module according to claim 5, wherein opposite side surfaces of the planar light emitting device and the wiring board to which a surface that the optical sheet is placed on, are painted.