JPS5259574A - Production of lead frame for ic - Google Patents

Production of lead frame for ic

Info

Publication number
JPS5259574A
JPS5259574A JP13556975A JP13556975A JPS5259574A JP S5259574 A JPS5259574 A JP S5259574A JP 13556975 A JP13556975 A JP 13556975A JP 13556975 A JP13556975 A JP 13556975A JP S5259574 A JPS5259574 A JP S5259574A
Authority
JP
Japan
Prior art keywords
lead frame
production
taper
varying
light
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.)
Granted
Application number
JP13556975A
Other languages
Japanese (ja)
Other versions
JPS5434672B2 (en
Inventor
Seiji Yahagi
Kazumi Shimada
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP13556975A priority Critical patent/JPS5259574A/en
Publication of JPS5259574A publication Critical patent/JPS5259574A/en
Publication of JPS5434672B2 publication Critical patent/JPS5434672B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Lead Frames For Integrated Circuits (AREA)

Abstract

PURPOSE: To facilitate flash removal work by varying the total quantity of light to expose photo resist through a photo mask between both surfaces and forming a lead frame of a taper-etched section.
COPYRIGHT: (C)1977,JPO&Japio
JP13556975A 1975-11-11 1975-11-11 Production of lead frame for ic Granted JPS5259574A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13556975A JPS5259574A (en) 1975-11-11 1975-11-11 Production of lead frame for ic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13556975A JPS5259574A (en) 1975-11-11 1975-11-11 Production of lead frame for ic

Publications (2)

Publication Number Publication Date
JPS5259574A true JPS5259574A (en) 1977-05-17
JPS5434672B2 JPS5434672B2 (en) 1979-10-29

Family

ID=15154869

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13556975A Granted JPS5259574A (en) 1975-11-11 1975-11-11 Production of lead frame for ic

Country Status (1)

Country Link
JP (1) JPS5259574A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6123352A (en) * 1984-07-11 1986-01-31 Fujitsu Ltd Lead frame and semiconductor device
JP2017017161A (en) * 2015-06-30 2017-01-19 Ｓｈマテリアル株式会社 Led package and lead frame for multi-row type led, and method of manufacturing the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6123352A (en) * 1984-07-11 1986-01-31 Fujitsu Ltd Lead frame and semiconductor device
JP2017017161A (en) * 2015-06-30 2017-01-19 Ｓｈマテリアル株式会社 Led package and lead frame for multi-row type led, and method of manufacturing the same

Also Published As

Publication number Publication date
JPS5434672B2 (en) 1979-10-29

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