Electronics and Telecommunications Research Institute

University-Industry Cooperation Group of Kyung Hee University

Mvtech

Chunwon Byun

Chi-Sun Hwang

Chan-Mo Kang

Hyunkoo Lee

Byoung-Hwa Kwon

Sukyung Choi

Jong-Heon Yang

Hyunsu Cho

Kyoung Ik Cho

Hye Yong Chu

Chan Woo Park

Gi Heon Kim

Yong Hae Kim

Nam Sung Cho

Jin Wook Shin

Jae-Eun Pi

Jeong Ik Lee

Hojun Ryu

Min Ki Ryu

Sujung Kim

Sooji Nam

Kukjoo Kim

Jin-Wook Shin

O Eun Kwon

Hye Jin Kim

Byoung Gon Yu

Jae Bon Koo

Doo-Hee Cho

Jaehyun Moon

Young Sam Park

Sung Min Yoon

Chil Seong Ah

Sang Hoon Cheon

Myung Lae Lee

Seong Hyun Kim

Seongdeok Ahn

Seong-Mok Cho

Jonghee Lee

Bock Soon Na

Jong Tae Lim

Young-deuk Jeon

Jonghyurk Park

Wooseup Youm

Himchan Oh

Sang-Hee Park

Yun-Jeong Kim

Sung-Min Yoon

OhSang Kwon

ByeongHoon Kim

Shinhyuk Yang

Hakyun Lee

Woongseob Han

Jae-Hyeung Park

Dae Hyun Ahn

Eunsuk Park

Jiyun Han

Provided is a flexible organic light emitting element that may include a flexible substrate, a circuit element layer on the flexible substrate, an emission layer on the circuit element layer, a first encapsulation structure between the flexible substrate and the circuit element layer, and a second encapsulation structure on the emission layer, wherein the first encapsulation structure includes a first inorganic layer and a first organic layer, which are sequentially stacked on an upper surface of the flexible substrate, and the first organic layer includes a first polymer nanocomposite.

Flexible organic light emitting element including encapsulation structure

A near-eye display system may comprise: a display panel; a pixelated optical shutter disposed to be spaced apart from a front surface of the display panel by a predetermined distance, and configured to selectively pass light from the display panel through an aperture formed therein; and a transmissive retro-reflector configured to transversely retro-reflect a portion of the light diverging after passing through the aperture of the pixelated optical shutter so that the portion of the light converges on a viewpoint of a position of a user's eye, wherein the aperture of the pixelated optical shutter and the viewpoint in which the transversely retro-reflected light converges on the position of the user's eye form a symmetry with respect to the transmissive retro-reflector.

Vision correction near-eye display system and operating method of near-eye display

A pixel circuit includes a sensing block, a stimulation block, a first line control circuit, and a second line control circuit. The sensing block outputs biometric data of a biosignal in response to a first selection signal. The stimulation block radiates a stimulation signal in response to a second selection signal. The first line control circuit outputs the first selection signal for selecting the sensing block as a target sensing block, and outputs the second selection signal for selecting the stimulation block as a target stimulation block. The second line control circuit processes characteristic data associated with the biometric data and the stimulation signal.

Pixel circuit for radiating stimulation signal and receiving biosignal and electronic device including the same

Provided is a display device. The display device includes a substrate having a pixel area including a first sub-pixel area, a second sub-pixel area, and a third sub-pixel area, a first control layer on the substrate, a second control layer on the first control layer, an intervening layer disposed between the first control layer and the second control layer on the first sub-pixel area and the second sub-pixel area, first quantum dots on the intervening layer of the first sub-pixel area, second quantum dots on the intervening layer of the second sub-pixel area, and an organic layer configured to cover a top surface and a side surface of the intervening layer between the first control layer and the second control layer.

Display device

Provided is a bio-signal detection and stimulation device. The bio-signal detection and stimulation device includes a flexible substrate, a stimulation part on the flexible substrate, and a detection electrode part on the flexible substrate. The stimulation part and the detection electrode part vertically overlap each other, the stimulation part includes an organic light emitting diode (OLED), the stimulation part emits an optical signal, and the detection electrode part detects a bio-signal.

Bio-signal detection and stimulation device

Provided is a pixel circuit. The pixel circuit includes a conversion element forming a voltage of an input level at a first node, a first transistor adjusting the voltage of the first node to a first level in response to a first signal received at a first time interval, a first capacitive element forming a voltage at a second node based on the voltage of the first node, a second transistor adjusting a level of the voltage of the second node to a second level in response to the first signal, a third transistor forming a voltage at a third node, a fourth transistor outputting a current in response to a second signal received in a second time interval, and a. fifth transistor adjusting the voltage of the third node to a third level in response to a third signal received in a third time interval.

Pixel circuit including conversion element, capacitive element, and transistors

Provided is a light emitting device including a lower electrode, an upper electrode disposed to face the lower electrode, a quantum dot light emitting layer between the lower electrode and the upper electrode, an electron transport layer between the lower electrode and the quantum dot light emitting layer, and a hole transport layer between the upper electrode and the quantum dot light emitting layer, wherein the quantum dot light emitting layer includes a quantum dot, and a first ligand on a surface of the quantum dot, and a second ligand on the surface of the quantum dot.

Light emitting device including a quantum dot light emitting layer having a first and second ligand on a surface of a quantum dot

A display device according to an embodiment of the inventive concept provides includes a substrate, a green light emitting element group and a blue light emitting element group, which are repeatedly arranged in a first direction parallel to a top surface of the substrate, and a red conversion pattern on the green light emitting element group and the blue light emitting element group. Here, the red conversion pattern overlaps a portion of the green light emitting element group and a portion of the blue light emitting element group in a second direction perpendicular to the top surface of the substrate.

Display device and manufacturing method thereof

Provided is an electrochromic display device including a display panel including a plurality of pixels configured to display an image on a basis of a unit frame defined as first to third sub-frames, a timing controller configured to output a data signal and an off signal, and a data driving circuit configured to provide, to the pixels, a data voltage generated based on the data signal during the second sub-frame and provide, to the pixels, an off voltage generated based on the off signal during the third sub-frame, wherein each of the pixels includes an electrochromic element, and a power supply voltage is delivered to the electrochromic element in response to the data voltage during the second sub-frame and the power supply voltage provided to the electrochromic element is blocked in response to the off voltage during the third sub-frame.

Electrochromic display device having a plurality of sub-frames

Embodiments of the inventive concepts provide a method of fabricating a flexible substrate and the flexible substrate fabricated thereby. The method includes printing a gate catalyst pattern on a separation layer, forming a gate plating pattern on the gate catalyst pattern, forming a gate insulating layer on the gate plating pattern, printing a source catalyst pattern and a drain catalyst pattern spaced apart from each other on the gate insulating layer, and forming a source plating pattern and a drain plating pattern on the source catalyst pattern and the drain catalyst pattern, respectively.

Method of fabricating a flexible substrate and the flexible substrate fabricated thereby

Provided is a gate driving circuit. The gate driving circuit includes an ith modulation circuit and an ith line selection circuit (where i is a natural number greater than 1). The ith modulation circuit outputs an ith modulation voltage to an ith line selection circuit based on received first to third control signals. The ith line selection circuit includes a memory transistor that is turned on or turned off according to a level of the received ith modulation voltage.

Gate driving circuit and organic light emitting display device including the same

Provided is a display device. The display device includes a lower display element where a substrate, a first lower electrode, a liquid crystal part, and a second lower electrode are sequentially stacked, an upper display element stacked vertical to the lower display element, where a first upper electrode, a light emitting part, a second upper electrode, and a protective part are sequentially stacked, and a middle part configured to deliver a driving signal to the lower and upper display elements, between the lower and upper display elements.

Display device and method of fabricating the same

A holographic display apparatus includes a light source unit, a spatial light modulator, and a spatial light modulator control circuit for controlling the spatial light modulator, the spatial light modulator control circuit including a data driving circuit for providing a data voltage to a signal line, a demultiplexer circuit which includes a plurality of switching elements connected to the signal line and sequentially turned on, and transfers the data voltage to a transfer line through a turned-on switching element among the switching elements, and a first element connected between the transfer line and a data line, passing a current flowing from the transfer line to the data line, and blocking a current flowing from the data line to the transfer line.

Holographic display apparatus and method of driving the same

A display panel includes pixels connected to each of gate lines and data lines. Each of the pixels includes a first transistor connected between a corresponding data line among the data lines and a first node and configured to deliver a data signal of the corresponding data line to the first node in response to an input signal received through a corresponding gate line among the gate lines, a reflective element circuit connected to the first node, and configured to implement the reflective mode in response to a signal of the first node when a first mode selection signal indicates a reflective mode, an emissive element circuit connected to a second node, and configured to implement the emissive mode in response to the signal of the first node when the mode selection mode indicates an emissive mode.

Display panel and display device including the same

Provided are a spatial light modulator (SLM) and a method of fabricating the same. The complex spatial light modulator includes a thin film transistor (TFT) layer provided on a substrate, an amplitude type SLM and a phase type SLM electrically connected to the TFT layer, and a first polarizer provided on the phase type SLM, wherein the TFT layer includes transistors electrically connected to the amplitude type SLM and the phase type SLM, respectively, and the amplitude type SLM and the phase type SLM are commonly and electrically connected to the TFT layer and driven.

Complex spatial light modulator and method of fabricating the same

Growing community of inventors

Daejeon, South Korea

Chunwon Byun