Abstract
A liquid crystal on silicon (LCoS) panel for projector applications is developed
using a new digital driving method to increase the gray scale of the projected image
without increasing the driving frequency. The LCoS panel, which has a wide video
graphics array (WVGA) resolution, is fabricated using 0.18 μm CMOS process
technology with an area of 9600 μm x
5800 μm. The projection system is successfully demonstrated using
the fabricated LCoS panel and the proposed digital driving method. The measured results
of the projection system show that the proposed driving method achieves an 8-bit gray
scale at a driving frequency of 75.6 MHz, which is less than 13.7% of the frequency in
previously reported methods such as frame rate control and pulse width
modulation.
© 2012 IEEE
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