JPS5583922A - Key input device - Google Patents

Key input device

Info

Publication number
JPS5583922A
JPS5583922A JP15795678A JP15795678A JPS5583922A JP S5583922 A JPS5583922 A JP S5583922A JP 15795678 A JP15795678 A JP 15795678A JP 15795678 A JP15795678 A JP 15795678A JP S5583922 A JPS5583922 A JP S5583922A
Authority
JP
Japan
Prior art keywords
electrodes
polarization plate
input
transparent
input keys
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
JP15795678A
Other languages
Japanese (ja)
Inventor
Junichi Yoshida
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.)
Casio Computer Co Ltd
Original Assignee
Casio Computer 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 Casio Computer Co Ltd filed Critical Casio Computer Co Ltd
Priority to JP15795678A priority Critical patent/JPS5583922A/en
Priority to US06/100,053 priority patent/US4313108A/en
Priority to GB7941993A priority patent/GB2038055B/en
Priority to DE2949382A priority patent/DE2949382C2/en
Publication of JPS5583922A publication Critical patent/JPS5583922A/en
Pending legal-status Critical Current

Links

Landscapes

  • Input From Keyboards Or The Like (AREA)

Abstract

PURPOSE: To decrease the number of component parts and thus reduce the cost by forming the upper polarization plate containing the transparent input electrodes and the through-holes on the liquid crystal display panel which displays the names of input keys and also securing the function as an insulated layer to the upper polarization plate.
CONSTITUTION: Liquid crystal display cell 10 formed with the electrodes to secure the display for the names of input keys is installed on lower polarization plate 11b. Then transparent input electrodes 13 for input keys are provided on panel 10 along with upper polarization plate 11a containing through-holes 14 opposing to electrodes 13. Furthermore, transparent elastic sheet 15 containing the mobile contact formed in the inner area opposing to electrode 13 with a gap secured is laminated onto plate 11a. Thus the mobile contact is pressed to electrode 13 to secure a contact, thus performing the key input action.
COPYRIGHT: (C)1980,JPO&Japio
JP15795678A 1978-12-07 1978-12-21 Key input device Pending JPS5583922A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP15795678A JPS5583922A (en) 1978-12-21 1978-12-21 Key input device
US06/100,053 US4313108A (en) 1978-12-07 1979-12-04 Electric apparatus for displaying a plurality of key symbols on a single passive display
GB7941993A GB2038055B (en) 1978-12-07 1979-12-05 Keyboard having passive display
DE2949382A DE2949382C2 (en) 1978-12-07 1979-12-07 Electrical device having a keyboard and a display of key symbols

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15795678A JPS5583922A (en) 1978-12-21 1978-12-21 Key input device

Publications (1)

Publication Number Publication Date
JPS5583922A true JPS5583922A (en) 1980-06-24

Family

ID=15661123

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15795678A Pending JPS5583922A (en) 1978-12-07 1978-12-21 Key input device

Country Status (1)

Country Link
JP (1) JPS5583922A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4814760A (en) * 1984-12-28 1989-03-21 Wang Laboratories, Inc. Information display and entry device
US5243332A (en) * 1991-10-31 1993-09-07 Massachusetts Institute Of Technology Information entry and display

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5267918A (en) * 1975-12-03 1977-06-06 Matsushita Electric Ind Co Ltd Chinese character input unit
JPS52103042A (en) * 1976-02-24 1977-08-29 Sharp Corp High frequency heating system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5267918A (en) * 1975-12-03 1977-06-06 Matsushita Electric Ind Co Ltd Chinese character input unit
JPS52103042A (en) * 1976-02-24 1977-08-29 Sharp Corp High frequency heating system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4814760A (en) * 1984-12-28 1989-03-21 Wang Laboratories, Inc. Information display and entry device
US5243332A (en) * 1991-10-31 1993-09-07 Massachusetts Institute Of Technology Information entry and display

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