JPS55128885A - Method of fabricating gallium phosphide light emitting display element - Google Patents
Method of fabricating gallium phosphide light emitting display elementInfo
- 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
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
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)
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 |
-
1979
- 1979-03-29 JP JP3624679A patent/JPS55128885A/en active Pending
Cited By (2)
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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