El sheet keypad

An EL sheet keypad comprises a conductive material layer coated on the entire surface of an EL sheet or the surface of the EL sheet where light is not emitted. The conductive material layer is connected to ground of a printed circuit board or to ground of the EL sheet by means of a conductive adhesi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	SHIN DONG HYUK,BAE KWANG HYUK,JANG WONBONG
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRIC COMMUNICATION TECHNIQUE ELECTRIC SWITCHES ELECTRICITY EMERGENCY PROTECTIVE DEVICES RELAYS SELECTORS TELEPHONIC COMMUNICATION
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Beschreibung
Zusammenfassung:	An EL sheet keypad comprises a conductive material layer coated on the entire surface of an EL sheet or the surface of the EL sheet where light is not emitted. The conductive material layer is connected to ground of a printed circuit board or to ground of the EL sheet by means of a conductive adhesive tape or conductive paste. According to the present invention, damage to the internal circuits of the mobile phone, which may occur when testing appropriateness of the EL sheet, is prevented. Furthermore, the EL sheet keypad has electrostatic shock and electromagnetic interference shielded functions.