JPS55128885A - Method of fabricating gallium phosphide light emitting display element - Google Patents

Method of fabricating gallium phosphide light emitting display element

Info

Publication number
JPS55128885A
JPS55128885A JP3624679A JP3624679A JPS55128885A JP S55128885 A JPS55128885 A JP S55128885A JP 3624679 A JP3624679 A JP 3624679A JP 3624679 A JP3624679 A JP 3624679A JP S55128885 A JPS55128885 A JP S55128885A
Authority
JP
Japan
Prior art keywords
light emitting
efficiency
pellet
hydrochloric acid
display element
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
JP3624679A
Other languages
Japanese (ja)
Inventor
Kiyoshi Hisatomi
Masaharu Watanabe
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 JP3624679A priority Critical patent/JPS55128885A/en
Publication of JPS55128885A publication Critical patent/JPS55128885A/en
Pending legal-status Critical Current

Links

Landscapes

  • Led Devices (AREA)
  • Weting (AREA)

Abstract

PURPOSE: To improve the light emitting efficiency of a gallium phosphide light emitting display element by cutting and cleaning a GaP wafer formed with pn junction, and dipping it in a mixture solution of 12 code hydrochloric acid and 30% by weight of hydrogen peroxide at 1:10∼30.
CONSTITUTION: A pn junction is formed, electrodes are attached to a GaP wafer, and the wafer is cut into unit pellets. Then, the wafers are contaminated with cutting chips or the like, and clead with acetone or the like. However, the external quantum efficiency of the surface of the pellet is remarkably decreased to lower the light emitting efficiency. Then, the pellet is dipped in a mixture solution of 12 code of hydrochloric acid and 30% by weight of hydrogen peroxide at 1:10∼30, rinsed with water, and dried. Then, the pellet is removed from the pulverized layer to improve the litht emitting efficiency. When the ratio of the hydrogen peroxide to the hydrochloric acid is less than 10, the efficiency becomes rough, and when it is higher than 30, the efficiency is insufficient.
COPYRIGHT: (C)1980,JPO&Japio
JP3624679A 1979-03-29 1979-03-29 Method of fabricating gallium phosphide light emitting display element Pending JPS55128885A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3624679A JPS55128885A (en) 1979-03-29 1979-03-29 Method of fabricating gallium phosphide light emitting display element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3624679A JPS55128885A (en) 1979-03-29 1979-03-29 Method of fabricating gallium phosphide light emitting display element

Publications (1)

Publication Number Publication Date
JPS55128885A true JPS55128885A (en) 1980-10-06

Family

ID=12464408

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3624679A Pending JPS55128885A (en) 1979-03-29 1979-03-29 Method of fabricating gallium phosphide light emitting display element

Country Status (1)

Country Link
JP (1) JPS55128885A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06350136A (en) * 1993-06-02 1994-12-22 Shin Etsu Handotai Co Ltd Manufacture of chip for algainp luminous element
CN100407461C (en) * 2005-11-28 2008-07-30 晶元光电股份有限公司 Method for producing luminous element with high-illuminating effect

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06350136A (en) * 1993-06-02 1994-12-22 Shin Etsu Handotai Co Ltd Manufacture of chip for algainp luminous element
CN100407461C (en) * 2005-11-28 2008-07-30 晶元光电股份有限公司 Method for producing luminous element with high-illuminating effect

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