Heat, consistency in production,and quality persistence due the heat. As you may know, LCoS degrades over time where blue color goes kaput. Some manufacturers did overcome the problem, some could not. LG might be in the latter list. Also, BOM ( bill of material ) to make an LCOS is higher than other technologies, namely DLP. While DLP can use a single DMD chip with a color wheel, LCD can on only be of use with 3 panels - 1 for each color. Those are the main difficulties.
“Measuring 21.5 inches each, with 1920 x 1080 resolution, 1,000:1 contrast ratio, and optical multitouch technology under their chunky bezels, these two models represent the biggest mainstream push for touchscreen computing yet.”
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Heat, consistency in production,and quality persistence due the heat. As you may know, LCoS degrades over time where blue color goes kaput. Some manufacturers did overcome the problem, some could not. LG might be in the latter list.
Also, BOM ( bill of material ) to make an LCOS is higher than other technologies, namely DLP. While DLP can use a single DMD chip with a color wheel, LCD can on only be of use with 3 panels - 1 for each color. Those are the main difficulties.