JPS559432A - Light emission element and their manufacturing method - Google Patents

Light emission element and their manufacturing method

Info

Publication number
JPS559432A
JPS559432A JP8209478A JP8209478A JPS559432A JP S559432 A JPS559432 A JP S559432A JP 8209478 A JP8209478 A JP 8209478A JP 8209478 A JP8209478 A JP 8209478A JP S559432 A JPS559432 A JP S559432A
Authority
JP
Japan
Prior art keywords
stress strain
light emission
life
emission elements
wafer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8209478A
Other languages
Japanese (ja)
Inventor
Keijiro Hirahara
Tatsuro Beppu
Yoshio Iizuka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP8209478A priority Critical patent/JPS559432A/en
Publication of JPS559432A publication Critical patent/JPS559432A/en
Pending legal-status Critical Current

Links

Landscapes

  • Led Devices (AREA)
  • Weting (AREA)

Abstract

PURPOSE: To extend the life and improve the reliability of light emission elements by limiting the stress strain on the side faces of pellets within 10kg/cm2.
CONSTITUTION: Forming epitaxially an n-type layer 42 and a p-type layer 43 on an n-type GaP substrate 41 cut out of a single crystal made by a pull method, a wafer with a pn junction 44 is obtained. This wafer is separated into prescribed size pieces after forming electrodes 45 and 46. At this time, elastic stress strain 48 occurs from the machine cut faces 47. This stress strain affects the life of the light emission elements directly. Therefore, treat the cut face 47 for about 60 seconds using aqua regia of about 25°C which will corrode the electrodes comparatively little and etch away the face about 1μm. By so doing, the stress strain 48 which occurred in cutting nearly disappears and the value of the stress strain becomes below 10kg/cm2. By so constructing, the life of the light emission elements can be lengthened and their characteristics can be stabilized.
COPYRIGHT: (C)1980,JPO&Japio
JP8209478A 1978-07-07 1978-07-07 Light emission element and their manufacturing method Pending JPS559432A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8209478A JPS559432A (en) 1978-07-07 1978-07-07 Light emission element and their manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8209478A JPS559432A (en) 1978-07-07 1978-07-07 Light emission element and their manufacturing method

Publications (1)

Publication Number Publication Date
JPS559432A true JPS559432A (en) 1980-01-23

Family

ID=13764833

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8209478A Pending JPS559432A (en) 1978-07-07 1978-07-07 Light emission element and their manufacturing method

Country Status (1)

Country Link
JP (1) JPS559432A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62101614A (en) * 1985-10-23 1987-05-12 イー・アイ・デュポン・ドゥ・ヌムール・アンド・カンパニー Bridged polymer fine grain and manufacture

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4979786A (en) * 1972-12-08 1974-08-01
JPS5186971A (en) * 1975-01-29 1976-07-30 Japan Radio Co Ltd San gozokukagobutsunoetsuchinguhoho

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4979786A (en) * 1972-12-08 1974-08-01
JPS5186971A (en) * 1975-01-29 1976-07-30 Japan Radio Co Ltd San gozokukagobutsunoetsuchinguhoho

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62101614A (en) * 1985-10-23 1987-05-12 イー・アイ・デュポン・ドゥ・ヌムール・アンド・カンパニー Bridged polymer fine grain and manufacture

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