Title :
A VLSI controller for active-matrix LCDs
Author :
Lee, D.D. ; Da Costa, V.M. ; Lewis, A.G.
Author_Institution :
Xerox Palo Alto Res. Center, CA, USA
Abstract :
There is currently no standard interface for active-matrix thin-film transistor liquid crystal displays (LCDs). Interface signals and timing requirements vary among panel technologies, driver ICs, and applications. To allow interfacing to the widest possible range of active matrix LCDs (AMLCDs) from various systems, a flexible, versatile, stand-alone interface controller is required. A typical existing AMLCD controller in a display module implements a rudimentary interface providing only synchronized clocks and buffering of a few pixel data The controller described in this paper absorbs all the display specific functions under the control of programmable registers, and thus presents a simple and display-independent interface to the host. In addition, the chip performs some simple image enhancement operations that can again be programmed to meet the demand of particular applications.<>
Keywords :
VLSI; clocks; driver circuits; flat panel displays; image processing; liquid crystal displays; programmable controllers; thin film transistors; time measurement; AMLCDs; LCDs; VLSI controller; active-matrix LCDs; active-matrix thin-film transistor liquid crystal displays; display module; display specific functions; display-independent interface; driver ICs; image enhancement operations; interface signals; panel technologies; programmable registers; stand-alone interface controller; standard interface; timing requirements; Active matrix liquid crystal displays; Active matrix technology; Clocks; Control systems; Driver circuits; Liquid crystal displays; Synchronization; Thin film transistors; Timing; Very large scale integration;
Conference_Titel :
Solid-State Circuits Conference, 1994. Digest of Technical Papers. 41st ISSCC., 1994 IEEE International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-1844-7
DOI :
10.1109/ISSCC.1994.344689
