Method for manufacturing planar light source, planar light source, and light source
AssigneeNichia Corporation
InventorToru Hashimoto
Life of this patent
Estimating the term…
Abstract
A method for manufacturing a planar light source includes: preparing a structure body including a wiring substrate, a light guide plate including a first major surface, a second major surface, and an inner side surface defining a first hole with an opening on a first major surface side, and a light source arranged on the wiring substrate in the first hole; injecting a first resin material downward through the opening of the first hole, the first resin material including a light-diffusing agent; and curing the first resin material to form a first resin layer on a wiring substrate between the inner side surface of the first hole and a first side surface of a first light-transmitting member.
Claims16
A method for manufacturing a planar light source, the method comprising:
- preparing a structure body including
- a wiring substrate,
- a light guide plate arranged over the wiring substrate, the light guide plate including a first major surface, a second major surface facing toward the wiring substrate at a side opposite to the first major surface, and an inner side surface defining a first hole extending from the first major surface to the second major surface with an opening on a first major surface side, and
- a light source arranged on the wiring substrate in the first hole, the light source including
- a light-emitting element including an element upper surface, an element lower surface, and an element side surface between the element upper surface and the element lower surface, and
- a first light-transmitting member covering the element side surface and the element upper surface, the first light transmitting member including a first side surface and a protrusion, the protrusion including a second side surface protruding from the first side surface toward the inner side surface of the light guide plate;
- injecting a first resin material downward through the opening of the first hole of the structure body, the first resin material including a light-diffusing agent;
- and
- curing the first resin material to form a first resin layer on the wiring substrate between the inner side surface of the light guide plate and the first side surface of the first light-transmitting member.
A planar light source comprising:
- a wiring substrate;
- a light guide plate arranged over the wiring substrate, and including a first major surface, a second major surface at a side opposite to the first major surface, the light guide plate defining a first hole extending from the first major surface to the second major surface with an opening on a first major surface side;
- a light-reflective member arranged between the wiring substrate and the second major surface of the light guide plate, the light-reflective member defining a second hole at a position overlapping the first hole of the light guide plate in a plan view;
- a light source placed on the wiring substrate in a through-hole defined by the first hole and the second hole, the light source including
- a light-emitting element including an element upper surface, an element lower surface, and an element side surface between the element upper surface and the element lower surface, and
- a first light-transmitting member covering the element side surface and the element upper surface and including a first side surface and a protrusion, the protrusion including a second side surface protruding from the first side surface toward an inner side surface of the through-hole;
- and
- a first resin layer arranged on the wiring substrate in the through-hole, the first resin layer being light-reflective.
A light source comprising:
- a light-emitting element including an electrode at a lower surface of the light-emitting element;
- a first light-transmitting member covering a side surface and an upper surface of the light-emitting element, the first light-transmitting member including a first side surface and a protrusion, the protrusion including a second side surface protruding outward of the first side surface;
- and
- a light-modulating member covering an upper surface of the first light-transmitting member, the light-modulating member being configured to partially reflect and partially transmit light emitted by the light-emitting element, wherein
- the protrusion is positioned at an upper end of a side surface of the first light-transmitting member, and
- the light-modulating member is disposed on an upper surface of the protrusion.
Dependencies are inferred from the claim text.