US 12,748,333 B2 · Light source module and electrophoretic display device

Abstract

A light source module includes a light guide plate and a light source. The light guide plate has a first surface, a second surface, a light incident surface, and two opposite side surfaces. The second surface is opposite to the first surface, and the light incident surface connects the first surface and the second surface. Each side surface connects the first surface and the second surface, and the light incident surface connects the two side surfaces. The light source is disposed beside the light incident surface for emitting an illumination beam toward the light incident surface. The light guide plate includes multiple optical microstructures disposed on each side surface and near the light incident surface. The optical microstructures include multiple curved convex surfaces arranged from one end near the light incident surface to the other end away from the light incident surface. An electrophoretic display device is also provided.

Claims10

Dependent claims

A light source module, comprising:

a light guide plate, having:
a first surface;
a second surface, opposite to the first surface;
a light incident surface, connecting the first surface and the second surface;
and
two side surfaces that are opposite to each other, each of the side surfaces connecting the first surface and the second surface, and the light incident surface connecting the two side surfaces;
and
a light source, disposed beside the light incident surface for emitting an illumination beam toward the light incident surface,
wherein the light guide plate comprises a plurality of optical microstructures disposed on each of the side surfaces and near the light incident surface, and the optical microstructures comprise a plurality of curved convex surfaces arranged from an end near the light incident surface to another end away from the light incident surface,
wherein a length of the side surface having the optical microstructures accounts for ⅓ to ½ of an overall length of the side surface.

7 more elements

An electrophoretic display device, comprising:

an electrophoretic display panel;
and
a light source module, disposed on the electrophoretic display panel and comprising:
a light guide plate, having:
a first surface;
a second surface, opposite to the first surface and facing the electrophoretic display panel;
a light incident surface, connecting the first surface and the second surface;
and
two side surfaces that are opposite to each other, each of the side surfaces connecting the first surface and the second surface, and the light incident surface connecting the two side surfaces;
and
a light source, disposed beside the light incident surface for emitting an illumination beam toward the light incident surface,
wherein the light guide plate comprises a plurality of optical microstructures disposed on each of the side surfaces and near the light incident surface, and the optical microstructures comprise a plurality of curved convex surfaces arranged from an end near the light incident surface to another end away from the light incident surface,
wherein a length of the side surface having the optical microstructures accounts for ⅓ to ½ of an overall length of the side surface.

10 more elements

Dependencies are inferred from the claim text.

Light source module and electrophoretic display device

Life of this patent

Light source module and electrophoretic display device

Life of this patent

Abstract

Claims10