Lg Innotek Co., Ltd.

Suzhou Lekin Semiconductor Co., Ltd.

Yong Han Jeon

Tae Yong Lee

Sang Jun Park

Jin Seok Lee

Deok Ki Hwang

Jae Hun Jeong

Tae Ki Kim

Ki Bum Sung

A circuit board according to an embodiment includes an insulating layer; a circuit pattern disposed on an upper surface of the insulating layer; a first solder resist disposed on an upper surface of the insulating layer and having a height smaller than a height of the circuit pattern; and a second solder resist disposed on an upper surface of the first solder resist and including a first portion having an upper surface lower than an upper surface of the circuit pattern and a second portion having an upper surface higher than the upper surface of the circuit pattern, wherein the circuit pattern includes: a plurality of first circuit patterns disposed on an upper surface of a first region of the insulating layer, and a plurality of second circuit patterns disposed on an upper surface of a second region of the insulating layer; wherein the first portion of the second solder resist is disposed between the plurality of first circuit patterns to have an upper surface lower than an upper surface of the first circuit pattern; and wherein the second portion of the second solder resist has an upper surface higher than an upper surface of the second circuit pattern, and is disposed to cover the plurality of second circuit patterns between the plurality of second circuit patterns.

Circuit board

A semiconductor device disclosed in an embodiment comprises: a light emitting unit comprising a light emitting structure layer which has a first conductivity type semiconductor layer, a second conductivity type semiconductor layer, and an active layer between the first conductivity type semiconductor layer and the second conductivity type semiconductor layer; and a sensor unit disposed on the light emitting unit, wherein the sensor unit comprises: a sensing material changing in resistance with light emitted by the light emitting unit; a first sensor electrode comprising a first pad portion and a first extension part extending from the first pad portion and contacting the sensing material; and a second sensor electrode comprising a first pad portion and a second extension part extending toward the first extension part from the second pad portion and contacting the sensing material. The sensor unit senses an external gas in response to the light generated from the light emitting unit.

Semiconductor element and sensing device having a light emitting unit and a sensor unit

Growing community of inventors

Seoul, South Korea

Yong Han Jeon