KEY PAD ASSEMBLY USING LIGHT GUIDE SHEET AND METHOD OF MAKING THE SAME

摘要

PURPOSE: A keypad assembly using a light guide sheet and a method of making the same are provided to reduce the number of a component by integrating a key body with a light guide sheet. CONSTITUTION: A keypad assembly comprises an integrated keypad(10), a reverse metal dome sheet(20), and a flexible printed circuit board(30). The integrated keypad shows a key button through an incident light. The key button is unified to a light guide sheet. The reverse metal dome sheet drives the metal dome by driving the integrated keypad through a boss. The flexible printed circuit board transfers an operation signal of the reverse metal dome sheet.