Back to results
US 2012/0069270 A1Published application
Display with focused illumination
AssigneeMicrosoft Corporation
InventorAdrian Robert Leigh Travis
Life of this patent
Estimating the term…
Abstract
Some implementations include a liquid crystal display with focused illumination. For example, a light source emitting a plurality of discrete colors may be focused onto a liquid crystal display panel. The liquid crystal display panel has a plurality of pixels and each pixel may have regions corresponding to the colors emitted by the light source. Light of each color can be focused onto the regions of the pixels corresponding to that color.
Claims20
A display comprising:
- a backlight including a plurality of groups of light sources emitting a plurality of discrete colors of light;
- a liquid crystal panel comprising a plurality of pixels, each pixel having a plurality of regions, each region corresponding to one of the discrete colors emitted by the backlight;
- a lenslet array having a plurality of lenslets to focus light of a particular color emitted by the backlight onto the regions corresponding to the particular color;
- a tapered light guide to guide the light from the backlight to the lenslet array, the tapered light guide positioned to emit light from a face of the tapered light guide to the lenslet array;
- and
- the backlight is controllable to selectively reduce an intensity of at least one group of the plurality of groups of light sources corresponding to an area of the display at which a displayed image is intended to be dark.
3 more elements
A display comprising:
- a backlight emitting a plurality of discrete colors of light;
- a liquid crystal panel comprising a plurality of pixels, each pixel having a plurality of regions, each region corresponding to one of the colors emitted by the backlight;
- a lenslet array having a plurality of lenslets to focus light of a particular color emitted by the backlight onto a particular region corresponding to the particular color;
- a tapered light guide to guide light from the backlight to the lenslet array;
- and
- a focal length of the lenslets of the lenslet array is shorter at an end of the lenslet array that first receives the light from the tapered light guide.
3 more elements
A display comprising:
- a backlight emitting a plurality of discrete colors of light;
- a liquid crystal panel comprising a plurality of pixels, each pixel having a plurality of regions, each region corresponding to one of the colors emitted by the backlight;
- a lenslet array having a plurality of columnar lenslets including a semispherical cross section to focus light of each of the colors emitted by the backlight onto particular regions corresponding to each of the colors;
- and
- a plurality of parallel ridges on a side of the lenslet array opposite to the plurality of columnar lenslets, such that an axis of the parallel ridges is perpendicular to an axis of the columnar lenslets.
2 more elements
Dependencies are inferred from the claim text.