Patent ID: 8532721

Claim:
A handheld electronic device comprising: a housing comprising a keyboard support member on a front thereof and a base defining a cavity therebetween; a display assembly slidably mounted to the housing and comprising a display screen on a front face thereof, the display assembly being slidable between a retracted position and an extended position, wherein in the retracted position a lower portion of the display screen is received within the cavity underlying the keyboard support member and an upper portion of the display screen is viewable outside of the cavity, and in the extended position the lower portion and the upper portion of the display screen are viewable outside of the cavity, wherein the display screen is a light emitting diode display screen comprising a plurality of pixels that are selectively illuminatable to display an image, wherein the housing allows at least some light generated by illumination of the pixels in the lower portion to be viewed from a front of the housing when the lower portion is received within the cavity; a processor configured to control operation of the display screen; and a position sensor for indicating to the processor when the display assembly is in the retracted position; the processor being configured to, when the position sensor indicates the display assembly is in the retracted position, upon an occurrence of one or more predetermined events, generate an event notification by illuminating pixels in the lower portion of the display screen.