Sungkyunkwan University

Seoul Semiconductor Co., Ltd.

Seung Li Choi

Tae Ho Kim

Sang Woo Kim

Dong Hoon Kim

Se Min Bang

Wan Chul Seung

Se Won Tae

Usman Khan

Han Jun Ryu

Minki Kang

A light emitting diode including a lead frame unit and a light source unit disposed on the lead frame unit, in which the lead frame unit includes a body portion having a first surface contacting the light source unit and a second surface opposite to the first surface, at least one solder hole recessed from the second surface of the body portion, a first conductive layer disposed on the first surface of the body portion and including a circular portion having a substantially circular shape and an elongated portion provided integrally with the circular portion and elongating in one direction from the circular portion, a second conductive layer disposed on the second surface of the body portion, and a connection portion disposed between the first conductive layer and the second conductive layer and penetrating through the body portion.

Light emitting diode, light emitting diode module, and display device having the light emitting diode module

The present disclosure provides a graphene-based touch sensor device using triboelectric effect, the device comprising: a substrate; a first electrode layer disposed on the substrate; a graphene channel layer disposed on the substrate, wherein the graphene channel layer is flush with the first electrode layer, and is spaced from the first electrode layer; a gate dielectric layer in partial contact with the electrode layer and the graphene channel layer respectively; source and drain electrodes formed on both opposing ends of the graphene channel layer respectively; and a triboelectric layer formed on the first electrode layer, wherein the triboelectric layer generates a triboelectric potential via contact of an external friction material therewith, wherein the contact of the external friction material is detected based on a current change in the graphene channel layer due to the triboelectric potential applied thereto.

Graphene-based touch sensor device using triboelectricity and method for fabricating the device

Growing community of inventors

Ansan-si, South Korea

Seung Li Choi