FIELD: portable communication devices. SUBSTANCE: portable communication device has encased electronic circuit board, keyboard whose separate keys are disposed for engaging in depressed condition respective cupola on cupola-forming film placed between keyboard and circuit board to provide for electric contact with respective contact point on circuit board. Communication device is provided with circuit-board electrostatic discharge protective gear. Cupola-forming film is made of nonconducting material affording air-tightness and/or electrostatic insulation between keyboard and circuit board with the result that cupola-forming film functions as mentioned electrostatic discharge protective gear. EFFECT: enhanced reliability and reduced cost of electrostatic discharge protective gear. 8 cl, 3 dwg
Authors
Dates
2003-05-20—Published
1998-02-06—Filed