| (19) |
 |
|
(11) |
EP 0 323 916 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
27.12.1990 Bulletin 1990/52 |
| (43) |
Date of publication A2: |
|
12.07.1989 Bulletin 1989/28 |
| (22) |
Date of filing: 09.01.1989 |
|
| (51) |
International Patent Classification (IPC)4: H01H 13/70 |
|
| (84) |
Designated Contracting States: |
|
BE DE FR NL SE |
| (30) |
Priority: |
08.01.1988 GB 8800369
|
| (71) |
Applicant: MARCONI ELECTRONIC DEVICES LIMITED |
|
Lincoln LN6 3LF (GB) |
|
| (72) |
Inventor: |
|
- Doyle, Keith Barrie
Tetbury
Gloucestershire GL8 8EY (GB)
|
| (74) |
Representative: Hoste, Colin Francis |
|
The General Electric Company p.l.c.
GEC Patent Department
Waterhouse Lane
Chelmsford, Essex CM1 2QX
Chelmsford, Essex CM1 2QX (GB) |
|
| |
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(57) A keypad of the kind utilising a profiled one-piece silicone-rubber mat, in which
the rigid back plate is coated with electroluminescent material whereby the keys may
be back-lit.