Field sequential liquid crystal display with memory integrated within the liquid crystal panel

Claim 1

A liquid crystal display panel made of ferroelectric liquid crystal, comprising: a matrix of cells; data lines coupled to the cells and which provide gray level data to the cells; select lines coupled to the cells and which enable the cells; wherein each cell includes a plurality of shift registers coupled to the data lines, with each shift register storing gray level data received via said data lines for a plurality of fields within a frame; wherein each cell includes a main cell capacitance and means for controlling a duration of time that the main cell capacitance is transmissive, said duration of time being proportional to said gray level data stored in one of said shift registers, wherein the means for controlling a duration of time includes: a switch coupled to the main cell capacitance that in a first position causes said main cell capacitance to be transmissive and in a second position causes said main cell capacitance to be maximally opaque, a momentary switch closure circuit coupled between the plurality of shift registers and the switch, said momentary switch closure circuit controlling the switch; and a counter coupled to the momentary switch closure circuit and controlling said momentary switch closure circuit.