A flat display panel comprising exhaust holes in a display region is provided. Techniques are introduced to reduce read disturb using state-dependent read pass voltages for particular word lines during a read operation. An apparatus and method are also disclosed for receiving, displaying and storing at a called station during a silent interval between ringing signals or after a call-waiting tone signal a calling party directory telephone number or directory telephone number and name from telephone or cellular company terminating central office equipment. The active zinc component is a two phase material, consisting essentially of a zinc oxide phase and a zinc aluminate phase. A diamond braid pattern is used in some embodiments.