LIGHT EMITTING ELEMENT, LIGHT EMITTING DEVICE AND SURFACE EMISSION ILLUMINATING DEVICE USING IT

Title:

LIGHT EMITTING ELEMENT, LIGHT EMITTING DEVICE AND SURFACE EMISSION ILLUMINATING DEVICE USING IT

Document Type and Number:

WIPO Patent Application WO/2003/100873

Kind Code:

A1

Abstract:

A non-sealing type light emitting element having a diode structure formed by laminating an n-type semiconductor layer and a p-type semiconductor layer on one surface of a translucent substrate, wherein the outside surface of the translucent substrate is tilted and made non-parallel with respect to the outer-most-side surface of the diode structure so as to enhance a light picking up efficiency from the outgoing surface of light. While a total reflection off these two surfaces is repeated, the incident angle of a light flux incident to the outgoing surface of light is gradually decreased to below a critical angle to allow the light flux to be output to the outside of the light emitting element.

Inventors:

YOKOTANI RYOJI (JP)
YAMAGUCHI MASAO (JP)

Application Number:

PCT/JP2003/006715

Publication Date:

December 04, 2003

Filing Date:

May 28, 2003

Export Citation:

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Assignee:

MATSUSHITA ELECTRIC WORKS LTD (JP)
YOKOTANI RYOJI (JP)
YAMAGUCHI MASAO (JP)

International Classes:

F21V5/00; H01L33/22; H01L33/10; H01L33/26; H01L33/50; H01L33/58; H01L33/60; H01L33/62; (IPC1-7): H01L33/00; F21V8/00

Domestic Patent References:

WO2001041219A1

2001-06-07

Foreign References:

JPH02198178A	1990-08-06
JPH11261109A	1999-09-24
JPH04307976A	1992-10-30
US20010010449A1	2001-08-02
JP2001345482A	2001-12-14
JPH087614A	1996-01-12
JP2000156526A	2000-06-06

Other References: