Electronic notepad

Claim 1

A liquid crystal display comprising: a semiconductor substrate; an array of reflector/field electrodes disposed on said substrate; a logic cell associated with each electrode, said logic cell being switchable between first and second states and being capable of maintaining either of said first and second states; address lines and signal lines on said substrate between said electrodes and coupled to said logic cells; a multi-layer liquid crystal apparatus on said substrate; and position sensing means coupled to said logic cells through said lines for sensing a position of a stylus with respect to said array and for activating indicating ones of said logic cells, said position sensing means comprising: a lower layer; a first plurality of conductive lines arranged in a parallel fashion on said lower layer; a flexible layer separated from said lower layer by an insulating medium; and a second plurality of conductive lines arranged in a parallel fashion on an upper layer, said second plurality of lines being substantially perpendicular to said first plurality of lines, whereby pressure from said stylus on said upper layer causes localized contact between said conductive lines, said positioned sensing means being disposed on a top layer of said liquid crystal apparatus.