The Fabrication and Measurement of 4-bit Modified Active Addressing Controller for STN LCDs

• Main Authors: Cheng-cherng Shiau, 蕭全成
• Other Authors: Jiin-Chuan Wu
• Format: Others
• Language: en_US
• Published: 1995
• Online Access: http://ndltd.ncl.edu.tw/handle/69970747531233200523

碩士 === 國立交通大學 === 電子研究所 === 83 === The fabrication and measurement of a new electronic drive technique called Modified Active Addressing method,which is a new method combining the concepts of Active Addressing Pulse- Height Modulation and Sequecncy Addressing Technique, is pre- sented. This new technique makes possible for high brightness, high contrast, and without loss of resolution for fast respond- ing STN LCDs(Super Twisted Nematic Liquid Crystal Displays). As compared with Active Addressing, the new method reduces signi- ficantly the chip size and manufacturing costs for simplifying the hardware require ments of the system considerably. Mathema- tical description for deriving the theory of Modified Active Addressing method is first discussed. Software simulations were used to verify the functions of implemented architecture which is applied to drive a 320X480, 16 grey-level,video rate STN LCD panel. Circuit design for implementing the modified Active Add- ressing Method is presented. The controller has been fabricated in a 0.8um CMOS single-poly double-metal twin-well technology.