|
(11) | EP 1 553 553 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
|
|
|
|
|||||||||||||||||||||||
| (54) | Liquid crystal display driver for compensating viewing angle |
| (57) A system comprises a liquid crystal display viewable from front and side view points,
and comprising a plurality of pixels having corresponding original luminance values,
a plurality of data lines in the display, a plurality of data drivers for driving
the data lines, and an adjusted gray scale generator for adjusting gray scales of
the pixels and outputting two adjusted gray scales to the data drivers for driving
the data lines at double the frequency. Original gray scales correspond to the original
normalized luminance of front views and side views. For the adjusted gray scales stored
in the look up table corresponding to the original gray scales, the sum of the absolute
value of the difference between the adjusted normalized luminance values for the front
and side views should be less than the sum of the absolute value of the difference
between the original normalized luminance values for the front and side views in order
to minimise color shifting between the front and side views.
|