Abstract:
Provided are a printed circuit board a lighting unit including the printed circuit board, the printed circuit board including: a metal substrate; a light emitting element disposed on the metal substrate; and a wiring portion disposed between the light emitting element and the metal substrate.
Abstract:
Provided is a circuit board including: a support substrate; a plurality of light emitting devices mounted on the support substrate; and a device protection portion surrounding one of the light emitting devices, or three or more surfaces of the plurality of light emitting devices.
Abstract:
A circuit board according to an embodiment includes an insulating layer; a circuit pattern disposed on the insulating layer; and a protective layer disposed on the insulating layer and the circuit pattern, and including first and second regions having different heights; wherein the circuit pattern includes: a first-first circuit pattern corresponding to the first region of the protective layer; and a first-second circuit pattern corresponding to the second region of the protective layer, wherein a height of the first region of the protective layer is lower than a height of the first-first circuit pattern, wherein a height of the second region of the protective layer is higher than a height of the first-second circuit pattern, wherein a surface of the first-first circuit pattern includes: a first portion in contact with the first region of the protective layer, and a second portion excluding the first portion, and wherein a surface roughness Ra of the first portion is different from a surface roughness Ra of the second portion.
Abstract:
A printed circuit board according to an embodiment includes a first insulating layer; a second insulating layer disposed on the first insulating layer and including a cavity; and a pad disposed on the first insulating layer and exposed through the cavity; wherein the second insulating layer includes a first portion disposed on an upper surface of the first insulating layer in a region where the cavity is formed; and a second portion other than the first portion, and wherein a thickness of the first portion is smaller than a thickness of the second portion.
Abstract:
A heat-radiating substrate according to an embodiment of the present invention comprises: a first metal layer; an insulating layer disposed on the first metal layer and including an epoxy resin and an inorganic filler; and a second metal layer disposed on the insulating layer, wherein the insulating layer comprises: a first region comprising a first surface in contact with the first metal layer; and a second region comprising a second surface in contact with the second metal layer, wherein the inorganic filler comprises a boron nitride aggregate and aluminum oxide, wherein the weight ratio of the aluminum oxide to the total weight of the inorganic filler on the first face is 0.95 to 1.05 times the weight ratio of the aluminum oxide to the total weight of the inorganic filler on the second face.
Abstract:
Provided are a circuit board, and a lighting device and board housing module having the circuit board, the circuit board, including a support substrate having a first region and a second region bent from the first region, light emitting devices on the first region, and a protective support portion protruding more than the light emitting devices from the support substrate of the first region.
Abstract:
Provided are a lighting device and a flat panel display having the lighting device, the lighting device, including: a support substrate; a circuit board on the support substrate; light emitting devices mounted on the circuit board; and a light guide plate having a protruding portion protruding to a remaining region except for a region in which the light emitting devices are disposed.
Abstract:
A printed circuit board according to an embodiment includes a first insulating layer; a second insulating layer disposed on the first insulating layer and including a cavity; and a pad disposed on the first insulating layer and exposed through the cavity; wherein the second insulating layer includes a first portion disposed on an upper surface of the first insulating layer in a region where the cavity is formed; and a second portion other than the first portion, and wherein a thickness of the first portion is smaller than a thickness of the second portion.
Abstract:
A circuit board according to an embodiment includes: an insulating layer including a first region and a second region; a plurality of outer layer circuit patterns disposed on upper surfaces of the first region and the second region of the insulating layer; and a solder resist including a first part disposed on the first region of the insulating layer and a second part disposed on the second region of the insulating layer; wherein the first part includes an upper surface having a curved surface and exposes an upper surface of an outer layer circuit pattern disposed on the first region of the insulating layer, wherein the second part covers an upper surface of an outer layer circuit pattern disposed on the second region of the insulating layer, and wherein at least a part of the upper surface of the first part is positioned lower than the upper surface of the outer layer circuit pattern.
Abstract:
Provided is a printed circuit board, including: a support substrate including a first region in which light emitting elements are mount, a second region extending from the first region, and a bending portion between the first region and the second region, an insulating substrate on the support substrate, wiring portions on the insulating substrate, and a protective layer on the wiring portions.