Keypad with EL united in keypad rubber and method for fabricating the same
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United States of America Patent
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Jul 10, 2007
Grant Date -
Jul 29, 2004
app pub date -
May 9, 2003
filing date -
Jan 24, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention discloses to a keypad with an EL device for a backlight united with a keypad rubber and a method for fabricating the same for improving a click sensitivity and visibility of keys and preventing a wrong operation of the keys by using a silicon injection process.The method for fabricating a keypad used in a portable terminal, comprises the steps of: fabricating a light-emitting device for a backlight; printing an adhesive on a front side and a back side of the light-emitting device; performing an injection process to form a silicon layer, the silicon layer united with the light-emitting device through the adhesive; cutting the light-emitting device united with the silicon layer in a regular shape suitable to the portable terminal; and attaching keys to portions of the silicon layer corresponding to a light-emitting portion of the front side in the light-emitting device.
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