US 11,778,858 B1 · Electronic device displays having microlenses

Abstract

An electronic device may have a display with an array of display pixels. To increase the efficiency of the display, the display may also include an array of microlenses. Each microlens may overlap and focus light from a respective pixel. Pixels for one of the colors of light may have a high aspect ratio. These pixels may be covered by two microlenses or a single cylindrical microlens. The microlens dimensions may be tuned to mitigate non-uniformities in the brightness profiles of the pixels. The microlens edges may be laterally shifted towards or away from the center of the light-emitting areas to either reduce or increase the focusing power of the microlens. The microlenses and color filter elements in each pixel may also be shifted to account for the chief ray angle of the display.

Claims12

Dependent claims

A display comprising:

an array of pixels, wherein the array of pixels includes a first plurality of pixel apertures for a first color of light and a second plurality of pixel apertures for a second color of light that is different than the first color;
and
an array of microlenses formed over the array of pixels, wherein:
first microlenses of the array of microlenses overlap the first plurality of pixel apertures and second microlenses of the array of microlenses overlap the second plurality of pixel apertures;
each one of the first microlenses has first and second opposing edges that are shifted towards a center of the pixel aperture it overlaps;
and
each one of the second microlenses has third and fourth opposing edges that are shifted away from a center of the pixel aperture it overlaps.

4 more elements

A display comprising:

an array of pixels, wherein the array of pixels includes a first plurality of pixel apertures for a first color of light, a second plurality of pixel apertures for a second color of light that is different than the first color, and a third plurality of pixel apertures for a third color of light;
and
an array of microlenses formed over the array of pixels, wherein:
first microlenses of the array of microlenses overlap the first plurality of pixel apertures, second microlenses of the array of microlenses overlap the second plurality of pixel apertures, and third microlenses of the array of microlenses overlap the third plurality of pixel apertures;
each one of the first microlenses has a first edge that is shifted towards a center of the pixel aperture it overlaps relative to a second edge of that pixel aperture;
each one of the second microlenses has a third edge that is shifted away from a center of the pixel aperture it overlaps relative to a fourth edge of that pixel aperture;
and
each one of the third microlenses has a fifth edge that is shifted towards a center of the pixel aperture it overlaps relative to a sixth edge of that pixel aperture, wherein the first edge of each one of the first microlenses is shifted by a first distance and wherein the fifth edge of each one of the third microlenses is shifted by a second distance that is less than the first distance.

5 more elements

Dependencies are inferred from the claim text.

Electronic device displays having microlenses

Life of this patent

Electronic device displays having microlenses

Life of this patent

Abstract

Claims12