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A gray-scale addressing technique for thin-film-transistor/liquid crystal displays

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4 Author(s)
Alt, P.M. ; IBM Research Division, Thomas J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598, USA ; Powell, C.G. ; Owens, B.L. ; Ifill, H.

An addressing technique allowing continuous-tone color images to be rendered on thin-film-transistor/liquid crystal displays having bilevel drivers is described. The technique uses multiple subfields per frame, with driver voltages changed synchronously with the field data. By using N bits of data per pixel, excitation is applied to the display one bit-plane per field for N consecutive fields. The technique is analyzed, its benefits and limitations discussed, and experimental results presented. Up to 16 gray levels have been demonstrated with good image quality.

Note: The Institute of Electrical and Electronics Engineers, Incorporated is distributing this Article with permission of the International Business Machines Corporation (IBM) who is the exclusive owner. The recipient of this Article may not assign, sublicense, lease, rent or otherwise transfer, reproduce, prepare derivative works, publicly display or perform, or distribute the Article.  

Published in:

IBM Journal of Research and Development  (Volume:36 ,  Issue: 1 )

Date of Publication:

Jan. 1992

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