Drive circuit for liquid crystal display cell

摘要

A driver circuit for use in an array of picture elements in a liquid crystal display is capable of displaying one set of image data while receiving a second set of image data. A first select switch transistor responsive to a first select signal controls the coupling of a first image to a first storage capacitor. A second select switch transistor responsive to a second select signal controls the coupling of a second image to a second storage capacitor. The first storage capacitor may be selectively coupled to an output node by means of a first enable switch transistor responsive to a first enable signal. The second storage capacitor may be selectively coupled to the same output node by means of a second enable switch transistor responsive to a second enable signal. By proper manipulation of the switch transistors, one storage capacitor may be coupled to the output node while the other storage capacitor is isolated from the output node and receiving new image data.