Dr. Kalluri R. Sarma
Honeywell International
21111 N. 19th Avenue, M/S 2J35
Phoenix , AZ 85036,
USA

 

 

Kalluri R. Sarma received his Ph. D degrees in Materials Science from the University of Southern California, Los Angeles. He is currently a Senior Research Fellow at Honeywell in the Aerospace Engineering, Advanced Technology Organization in the Displays and Graphics Systems area, with responsibilities for the development of advanced display technologies for the aerospace and military applications. He has been involved with the electronic display development for the past 20 years. His specific R&D activities and accomplishments include design and development of AM LCDs, examples of which include development of a miniature color display for the Armstrong Laboratory, wide viewing angle TN (normally black and normally white) displays, in-plane-switching (IPS) mode displays, and multi-domain vertically aligned (MVA) displays for use in Boeing 777, 737, F-16, G550, and various other Business Jets and military systems. For the past six years, his R&D efforts are focused on the AM OLED, and flexible display development. His experience and interests includes a-Si TFT, LTPS TFT, O-TFT and SOI transistor technologies, active matrix display design and fabrication, display materials and components, and LCD, OLED and flexible display technologies. He received the Honeywell's prestigious H.W. Sweatt Engineer / Scientist award for his development of wide viewing angle AM LCD. He has over 50 technical publications and over 30 patents on display technology to his credit, and presented several Invited Papers and Seminars at SID and other technical conferences.

He is an active member of SID, SPIE and IEEE, and serves on the SID Program Committee, and the Executive Committee.

 

Fundamentals of Active Matrix Liquid Crystal Displays

Currently, AM LCD is the dominant flat panel display technology that is serving a wide variety of applications ranging from displays for mobile phones, notebook computers, desktop monitors, TV and displays for specialized applications such as avionics. In this tutorial we will first cover the fundamentals of liquid crystal displays, and active matrix addressing. We will then discuss various active matrix switching elements (including a-Si, low- temperature poly- silicon, and Organic TFTs), and active matrix display design. This will be followed by a discussion of the AM LCD components, wide viewing angle technologies, and display performance parameters. The tutorial will conclude with a discussion of the manufacturing aspects of AM LCDs.