Light-emitting device

Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure – With housing or contact structure

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257 79, H01L 3300

Patent

active

060181672

ABSTRACT:
An LED chip 41 is mounted in a horizontal state in such a manner that a PN junction surface 42 is in perpendicular to a unit substrate 45. A side surface of a crystal surface of the LED chip 41 is recessed in such a manner as to have a distance with respect to a surface of the unit substrate 45, or is wholly covered by an electrically insulating film 52 formed of an ultraviolet curable type resin, so that even when the LED chip is in contact with wiring patterns 46, 47 of the unit substrate 45, an electric trouble such as an electrical short is not generated. An electrical connection to the LED chip 41 is performed by connecting thick film electrodes 53, 54 provided on both sides in a perpendicular direction to a PN junction surface, and the wiring patterns 46, 47 on the unit substrate 45 to each other through electrically conductive pastes 56, 57. Since a multiplicity of horizontally mounted LED chips 41 can be mounted on the unit substrate 45 without necessity of positioning at a high accuracy, an image display unit performing a matrix display can be easily manufactured.

REFERENCES:
patent: 3886581 (1975-05-01), Katsumura et al.
patent: 4136351 (1979-01-01), Sugawara et al.
patent: 4143385 (1979-03-01), Miyoshi et al.
patent: 4709253 (1987-11-01), Walters
patent: 5265792 (1993-11-01), Harrah et al.
patent: 5440575 (1995-08-01), Chand et al.
patent: 5814837 (1998-09-01), Okazaki
patent: 5861636 (1999-01-01), Dutta et al.

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