JOURNAL

2025

Fast Digital Circuit Synthesis Framework Based on Deep Reinforcement Learning Using Scoreboard

H. Cho, Y. Pyo, T. W. Lee, J. Lee, H. Choi, H. U. Cho, and H. Nam, IEEE Access 13, 57798-57808, 2025. DOI: 10.1109/ACCESS.2025.3555771

Solving Jigsaw Puzzles by Predicting Fragment’s Coordinate Based on Vision Transformer

G. Kim, H. Cho, and H. Nam, Expert Systems with Applications 272, 126776, 2025. DOI: 10.1016/j.eswa.2025.126776

Low-power technologies for displays

W.-B. Jeong, T. Kim, H. Nam, and S.-W. Lee, Nature Reviews Electrical Engineering 2, 173-187, 2025. DOI: 10.1038/s44287-024-00139-1

2023

Fine-Tunable Emission Pulse Generation Circuit Based on p-Type Low-Temperature Poly-Si Thin-Film Transistors for Active Matrix Organic Light-Emitting Diode Displays

M. K. Chang, J. H. Kim, and H. Nam, IEEE Trans. Electron Devices, vol. 70. no. 6, pp. 3092-3099, 2023

2021

Complexity-Reduced Super Resolution for Foveation-based Driving Head Mounted Displays

H. Nam and H. Kang, IEEE Access, vol. 9, pp. 140042-140049, 2021

Body-Effect-Free OLED-on-Silicon Pixel Circuit Based on Capacitive
Division to Extend Data Voltage Range

J. Bae and H. Nam, Electronics, vol.10, 2351, 2021

Review of Capacitive Touchscreen Technologies: Overview, Research Trends, and Machine Learning Approaches

H. Nam, K.-H. Seol, J. Lee, H. Cho, and S. W. Jung, Sensors, vol. 21, 4776, 2021

GateRL: Automated Circuit Design Framework of CMOS Logic Gates Using Reinforcement Learning

H. Nam, Y. I. Kim, J. Bae, and J. Lee, Electronics, vol. 10, 1032, 2021

Variable Clock and EM Signal Generation Scheme for Foveation-based Driving OLED Head-Mounted Displays

J. Bae, J. Lee, and H. Nam, Electronics, vol. 10, 538, 2021

2019

A contact-based data communication technique using capacitive touch screen panel and support vector machine classifier

K.-H. Seol, S. Park, and H. Nam, IEEE Access, vol. 7, pp. 178596-178604, 2019

Foveation-based reduced resolution driving scheme for immersive virtual reality displays

S. Park, Y. I. Kim, and H. Nam, Optics Express, vol. 27, no. 21, 29594, 2019

Finger and stylus discrimination scheme based on capacitive touch screen panel and support vector machine classifier

K.-H. Seol, S. Park, S.-J. Song, and H. Nam, Japanese Journal of Applied Physics, vol. 58, 074501, 2019

Deep-learning-based pixel compensation algorithm for local dimming liquid crystal displays of quantum-dot backlights

S.-J. Song, Y. I. Kim, J. Bae, and H. Nam, Optics Express, vol. 27, no. 11, 15907, 2019

2017

Robust low power DC-type shift register circuit capable of compensating threshold voltage shift of oxide TFTs

J. R. Seo, S.-J. Song, D. W. Kim, and H. Nam, Displays, vol. 49, pp. 65-71, 2017

Robust integrated shift register circuit over clock noises for in-cell touch applications

J. Seo and H. Nam, Journal of the Society for Information Display, vol. 25, no. 9, pp. 537-543, 2017

Visible light identification system for smart door lock application with small area outdoor interface

S.-J. Song and H. Nam, Current Optics and Photonics, vol. 1, no. 2, pp. 90-94, 2017

2014

Low power programmable shift register with depletion mode oxide TFTs for high resolution and high frame rate AMFPDs

E. Song and H. Nam, Journal of Display Technology, vol. 10, no. 10, pp. 834-838, 2014

Novel voltage programming n-channel TFT pixel circuit for low power and high performance AMOLED displays

E. Song and H. Nam, Displays, vol. 35, pp. 118-125, 2014

Weighted roll-off scheme to remove block artifacts for low power local dimming liquid crystal displays

H. Nam, E. Song, S.-K. Kim, Optics & Laser Technology, vol. 58, pp. 8-15, 2014

Bilinear weighting and threshold scheme for low-power two-dimensional local dimming liquid crystal displays without block artifacts

S.-K. Kim, S.-J. Song, and H. Nam, Optical Engineering, vol. 53, no. 6, 063110, 2014

Robust two-phase clock oxide TFT shift register over threshold voltage variation and clock coupling noises

H. Nam, E. Song, ETRI Journal, vol. 36, no. 2, pp. 321-324, 2014

Shoot-through current reduction scheme for low power LTPS TFT programmable shift register

E. Song and H. Nam, Journal of the Society for Information Display, vol. 22, no. 1, pp. 18-22, 2014

2012

Data Supply Voltage Reduction Scheme for Low-Power AMOLED Displays

H. Nam and H. Jeong, ETRI Journal, vol. 34, no. 5, pp. 727-733, 2012

Oxide TFT inverter with wide output dynamic range

H. Nam and E. Song, Electronics Letters, vol. 48, no. 13, pp. 791-792, 2012

Image Independent Driving Power Reduction for High Frame Rate LCD Televisions

H. Nam and J. H. Shim, ETRI Journal, vol. 34, no. 3, pp. 470-473, 2012

2010

A Color Compensation Algorithm to Avoid Color Distortion in Active Dimming Liquid Crystal Displays

H. Nam, IEEE Transactions on Consumer Electronics, vol. 56, no. 4, pp. 2569-2576, 2010

Low-Power Liquid Crystal Display Television Panel with Reduced Motion Blur

H. Nam and S.-W. Lee, IEEE Transactions on Consumer Electronics, vol. 56, no. 2, pp. 307-311, 2010

2024

Low Power Emission Pulse Generation Circuit Based on n-Type amorphous In-Ga-Zn-Oxide Transistors for Active-Matrix Organic Light-Emitting Diode Displays

M. K. Chang, J. H. Kim, and H. Nam, Micromachines, vol. 15, 1330, 2024. DOI: 10.3390/mi15111330

Region-Selective Shift Register by A Single Output Enable Signal for A Multiple Refresh Frequency Driving Scheme

M. K. Chang, J. H. Kim, and H. Nam, Journal of the Society for Information Display, vol. 32, 765-774, 2024. DOI: 10.1002/jsid.2008

Highly Uniform Low Gray AMOLED Pixel using Stable Circuit and Duty Ratio Modulation Driving

C. Park, H.-O. Kim, J.-H. Yang, J.-E. Pi, Y.-D. Kim, C.-W. Byun, K.-S. Kang, J.-H. Park, M. Kim, H. Nam, and S.-Y. Lee, IEEE Journal of the Electron Devices Society, vol. 12, 668-676, 2024

Review of Integrated Gate Driver Circuits in Active Matrix Thin-Film Transistor Display Panels

M. K. Chang, S. Jeong, D. Kim, and H. Nam, Micromachines, vol. 15, 823, 2024. DOI: 10.3390/mi15070823

Low Complexity Local Dimming Algorithm for High Quality Head
Up Displays in Automotive Vehicles

J. H. Kim, Y. J. Pyun, J. H. Oh, K. H. Song, Y. N. Kim, J. H. Cho, C. Y. Yoon, Y. H. Han, and H. Nam, Journal of Information Display, vol. 25, no. 2, pp. 197-210, 2024. DOI: 10.1080/15980316.2023.2254509

CNN-based Subpixel Rendering Technique with Additional Pixel Arrangement Information for High Quality Displays

Y. J. Pyun, G. Kim, and H. Nam, Optics and Lasers in Engineering, vol. 175, 108033, 2024. DOI: 10.1016/j.optlaseng.2024.108033

2022

Heatmap Assisted Accuracy Score Evaluation Method for Machine-Centric Explainable Deep Neural Networks

J. Lee, H. Cho, Y. J. Pyun, S.-J. Kang, and H. Nam, IEEE Access, vol. 10, pp. 64832-64849, 2022. DOI: 10.1109/ACCESS.2022.3184453

2020

Active stylus-touch discrimination scheme based on anomaly detection algorithm

K.-H. Seol, S. Park, J. Lee, and H. Nam, Journal of the Society for Information Display, vol. 28, no. 10, pp. 831-836, 2020

Clocked control scheme of separating TFTs for a node-sharing LTPS TFT shift register

Y. I. Kim and H. Nam, Journal of the Society for Information Display, vol. 28, no. 10, pp. 825-830, 2020

2018

Interface tunneling layer: organic interface engineering for stable green PHOLEDs through an ultrathin interface tunneling layer

S.-R. Park, D. A. Ahn, K.-H. Seol, S. Yang, J. W. Kim, R. Lampande, H. Nam, and M. C. Suh, Advanced Materials Interfaces, vol. 5, 1801034, 2018

Flicker modeling scheme of liquid crystal displays based on current leakage without information about TFT parameters

D. Kim, S.-J. Song, J. H. Lee, J.-H. Koh, H. Kim, S.-Y. Lee, G.-S. Lee, and H. Nam, Solid-State Electronics, vol. 149, pp. 38-45, 2018

Simultaneous emission AC-OLED pixel circuit for extended lifetime of OLED display

K.-H. Seol, Y. I. Kim, S. Park, and H. Nam, IEEE Journal of the Electron Devices Society, vol. 6, pp. 835-840, 2018

Node-sharing low-temperature poly silicon TFT shift register without bootstrapping degradation for narrow bazel displays

Y. I. Kim, S. Park, and H. Nam, Electronics Letters, vol. 54, no. 20, pp. 1162-1164, 2018

Sound-of-tapping user interface technology with medium identification

S.-J. Song and H. Nam, Displays, vol. 53, pp. 54-64, 2018

Simple, fast, and low-cost camera-based water content measurement with colorimetric fluorescent indicator

S.-J. Song, T.-I. Kim, Y. Kim, and H. Nam, Optics & Laser Technology, vol. 101, pp. 545-553, 2018

Low power and low noise shift register for in-cell touch display applications

J. Seo and H. Nam, IEEE Journal of the Electron Devices Society, vol. 6, pp. 726-732, 2018

2015

Luminance uniformity study of OLED lighting panels depending on OLED device structures

H. W. Bae, Y. H. Son, B. Y. Kang, J. M. Lee, and H. Nam, J. H Kwon, Optics Express, vol. 23, no. 24, 247075, 2015

Short-distance visible light communication with simple clock data recovery for audio applications

S.-J. Song and H. Nam, Journal of the Society for Information Display, vol. 23, no. 10, pp. 443-450, 2015

Low power low temperature poly-Si thin-film transistor shift register with DC-type output driver

S.-J. Song, B. H. Kim, J. Jang, and H. Nam, Solid-State Electronics, vol. 111, pp. 204-209, 2015

Robust flicker evaluation method for low power adaptive dimming LCDs

S.-K. Kim, S.-J. Song, and H. Nam, Optics & Laser Technology, vol. 68, pp. 129-135, 2015

Dual-mode oxide thin film transistor shift register for external compensation in active-matrix organic light emitting diode displays

S.-J. Song and H. Nam, Journal of the Society for Information Display, vol. 22, no. 6, pp. 323-327, 2015

Pulse-width-independent low power programmable low temperature poly-Si thin-film transistor shift register

E. Song, S.-J. Song, and H. Nam, Solid-State Electronics, vol. 107, pp. 35-39, 2015

In-pixel mobility compensation scheme for AMOLED pixel circuits

S.-J. Song and H. Nam, Journal of Display Technology, vol. 11, no. 2, pp. 209-213, 2015

Hybrid voltage and current programming pixel circuit for high brightness simultaneous emission AMOLED display

S.-J. Song, Y. Chen, J. Jang, and H. Nam, Journal of Display Technology, vol. 11, no. 3, pp. 255-260, 2015

Depletion mode oxide TFT shift register for variable frame rate AMOLED displays

E. Song, B. Kang, I. Han, K. Oh, B. Kim, and H. Nam, IEEE Electron Device Letters, vol. 36, no. 3, pp. 247-249, 2015

High-Speed Pseudo-CMOS Circuits Using Bulk Accumulation a-IGZO TFTs

Y. Chen, D. Geng, M. Mativenga, H. Nam, and J. Jang, IEEE Electron Device Letters, vol. 36, no. 2, pp. 153-155, 2015

2013

Low color distortion adaptive dimming scheme for power efficient LCDs

H. Nam and E. Song, Optics & Laser Technology, vol. 48, pp. 52-59, 2013

2011

Low power active dimming liquid crystal display with high resolution backlight

H. Nam, Electronics Letters, vol. 47, no. 9, pp. 538-540, 2011