Sungkyunkwan University

Samsung Display Co., Ltd.

Samsung Electronics Co., Ltd.

Samsung Displayco., Ltd.

Nae-eung Lee

Won Sang Park

Hye Yong Chu

Jae Ik Lim

Thanh Tien Nguyen

Do-Il Kim

Han-Byeol Lee

Tae Young Choi

Sunghoon Lee

Juhyun Kim

Kyung-Eun Byun

Wonsang Park

Jaeik Lim

Jong-Jin Park

Jihyun Bae

Sang-hun Jeon

Hyeyong Chu

Sanghun Jeon

Ji-hyun Bae

Do-il Kim

Quang Trung Tran

Doil Kim

Byeong-ung Hwang

A pressure sensor includes: a base substrate including an embossed pattern; a first conductive layer disposed on the base substrate; a pressure sensitive material layer disposed on the first conductive layer such that its electrical characteristic is varied corresponding to a strain applied thereto, the pressure sensitive material layer including a dielectric and nanoparticles dispersed in the dielectric; and a second conductive layer disposed on the pressure sensitive material layer, wherein the dielectric and the nanoparticle include materials having pyroelectricities of polarities opposite to each other.

Pressure sensor, manufacturing method thereof, and display device having the same

An electronic device comprises a base substrate changing a cross section area corresponding to an external force applied from outside and a sensor changing a cross section area corresponding to the external force applied from outside. The sensor comprises a first electrode disposed on the base substrate, a second electrode disposed on the base substrate, and a dielectric layer disposed between the first electrode and the second electrode. A thickness of the dielectric layer stays substantially the same when a cross sectional area of the base substrate changes.

Electronic device

A capacitor structure includes: a first substrate having a first electrode part provided on one surface thereof; a second substrate having a second electrode part provided on a surface thereof, which faces the first substrate; and a dielectric layer provided between the first substrate and the second substrate, wherein a Poisson's ratio of the first substrate or the second substrate is different from a Poisson's ratio of the dielectric layer. The capacitor structure has a substantially constant capacitance even when the capacitor structure is exposed to external strain.

Capacitor structure, display device having capacitor structure, and manufacturing method of capacitor structure

A flexible bimodal sensor includes a gate electrode; a flexible substrate; a source electrode disposed on the flexible substrate; a drain electrode disposed on the flexible substrate apart from the source electrode; a channel layer disposed on the source electrode and the drain electrode and a portion of the flexible substrate between the source electrode and the drain electrode; and a gate insulating layer comprising a plurality of protrusions, the gate insulating layer being disposed on the channel layer and arranged between the channel layer and the gate electrode. The drain electrode outputs a current signal simultaneously indicating a temperature value and a pressure value sensed by the flexible bimodal sensor.

Flexible bimodal sensor

A pressure sensor and a pressure sensing method are provided. The pressure sensor includes a substrate; a sensor thin film transistor (TFT) disposed on the substrate and including a gate insulating layer, wherein the gate insulating layer includes an organic matrix in which piezoelectric inorganic nano-particles are dispersed; a power unit configured to apply an alternating current (AC) signal to a gate of the sensor TFT; and a pressure sensing unit configured to obtain a remnant polarization value based on a drain current which is generated in response to the AC signal and detected by the sensor TFT, and to sense a pressure based on the remnant polarization value.

Pressure sensor and pressure sensing method

Growing community of inventors

Seoul, South Korea

Nae-eung Lee