Transflective liquid crystal displays with sequentially flashing light sources
AssigneeSharp Kabushiki Kaisha
InventorsHenning Molsen, Martin David Tillin
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Abstract
A transflective liquid crystal display (70) comprises a liquid crystal cell (38) disposed between a front substrate (40) and a rear substrate (36), a front polarizer (46) located in front of the front substrate (40) and a rear polarizer (32) located behind the rear substrate (36), a front retarder (42, 44) located between the front substrate (40) and the front polarizer (46), a rear retarder (62, 64) located between the rear substrate (36) and the rear polarizer (32), and a light source (30) located behind the rear polarizer (32). A transflective display having a number of differently colored sequentially flashing backlights is also provided.
Claims19
A transflective display, comprising:
- a liquid crystal divided into a plurality of pixels,
- addressing means for addressing each pixel and switching each pixel between different states resulting in different levels of transmission of light through the display,
- a flashing backlight located behind the liquid crystal, and
- a partially reflective mirror located between the liquid crystal and a rear polariser for both reflecting ambient light back through the liquid crystal and allowing transmission of light from the backlight through the liquid crystal,
- wherein each pixel is provided with a light filter,
- the flashing backlight comprises a plurality of sequentially flashing light sources,
- the liquid crystal is disposed between a front substrate and a rear substrate,
- a front polariser is located in front of the front substrate,
- the rear polariser is located behind the rear substrate, and
- the rear substrate is provided with the partially reflective mirror.
Dependencies are inferred from the claim text.