Title :
A 30-V row/column driver for flat-panel liquid crystal displays
Author_Institution :
Faselee AG, Zurich, Switzerland
fDate :
4/1/1988 12:00:00 AM
Abstract :
An 80-output row/column driver has been developed for flat-panel liquid crystal displays (LCDs) using multiplex rates of up to 1:300. A p-well polysilicon-gate CMOS process was enhanced to provide 30-V p-channel and 15-V n-channel transistors using double-diffused drains. By means of a cascode circuit structure, voltage capability on the n-channel side was boosted to 30 V. Parasitic surface channels were avoided by a systematic approach to high-voltage layout. Important circuit features include low power consumption, display border control, and overtemperature protection. Chip size is 25.65 mm2. Packaging in an 18.6 mm×15.2 mm, three-sided, 120-lead, tape-automated-bonding module is optimized for wiring on single-sided assembly substrates
Keywords :
CMOS integrated circuits; flat panel displays; integrated circuit technology; liquid crystal displays; multiplexing equipment; 18.6 mm; 30 V; ASIC; CMOS process; HV CMOS; LCD; TAB module; VLSI; cascode circuit structure; circuit features; custom IC; display border control; double-diffused drains; field plate; flat-panel liquid crystal displays; guard ring; high-voltage layout; multiplex rates; overtemperature protection; p-well; polycrystalline Si gate transistors; power consumption; tape-automated-bonding module; voltage capability; Assembly; Automatic control; CMOS process; Driver circuits; Energy consumption; Flat panel displays; Large screen displays; Liquid crystal displays; Packaging; Power system protection; Virtual colonoscopy; Virtual reality; Voltage; Wiring;
Journal_Title :
Solid-State Circuits, IEEE Journal of
