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2020
Open Access
Organic light emitting diodes (OLED)
Luminance
Display devices
Light
Temperature
2019

A 4410-ppi Resolution Pixel Circuit for High Luminance Uniformity of OLEDoS Microdisplays

Na, J. S., Hong, S. K. & Kwon, O. K., 2019 Jan 1, In : IEEE Journal of the Electron Devices Society. 7, p. 1026-1032 7 p., 8804214.

Research output: Contribution to journalArticle

Open Access
Organic light emitting diodes (OLED)
Silicon
Luminance
Pixels
Light

A compensation method for variations in subthreshold slope and threshold voltage of thin-film transistors for AMOLED displays

Keum, N. H., Chai, C. C., Hong, S. K. & Kwon, O-K., 2019 Jan 1, In : IEEE Journal of the Electron Devices Society. 7, p. 462-469 8 p., 8666716.

Research output: Contribution to journalArticle

Organic light emitting diodes (OLED)
Thin film transistors
Threshold voltage
Display devices
Light

A fast transient and low power capacitor-less low-dropout regulator using advanced dynamic biasing method

Jung, J. H., Jung, J. H., Jung, Y. H., Jeong, H. E., Hong, S. K. & Kwon, O. K., 2019 Jun, In : Journal of Semiconductor Technology and Science. 19, 3, p. 254-259 6 p.

Research output: Contribution to journalArticle

Capacitors
Bias currents
Transient analysis
Electric power utilization
Resistors

Highly Sensitive Active-Matrix Driven Self-Capacitive Fingerprint Sensor based on Oxide Thin Film Transistor

Jeon, G. J., Lee, S. H., Lee, S. H., Shim, J. B., Ra, J. H., Park, K. W., Yeom, H. I., Nam, Y., Kwon, O. K. & Park, S. H. K., 2019 Dec 1, In : Scientific reports. 9, 1, 3216.

Research output: Contribution to journalArticle

Dermatoglyphics
Oxides
Equipment and Supplies
Technology
Industry
2018
6 Citations (Scopus)

A 3.9-kHz Frame Rate and 61.0-dB SNR Analog Front-End IC with 6-bit Pressure and Tilt Angle Expressions of Active Stylus Using Multiple-Frequency Driving Method for Capacitive Touch Screen Panels

An, J. S., Han, S. H., Kim, J. E., Yoon, D. H., Kim, Y. H., Hong, H. H., Ye, J. H., Jung, S. J., Lee, S. H., Jeong, J. Y., Baek, K. H., Hong, S. K. & Kwon, O. K., 2018 Jan, In : IEEE Journal of Solid-State Circuits. 53, 1, p. 187-203 17 p., 8089675.

Research output: Contribution to journalArticle

Touch screens
Signal to noise ratio
Gages
Sensors
2 Citations (Scopus)

A Fast and Highly Accurate Battery Charger with Accurate Built-In Resistance Detection

Jung, Y. H., Jung, J. H., Jeong, H. E., Jung, J. H., An, J. S., Ahn, H. A., Hong, S. K. & Kwon, O. K., 2018 Dec, In : IEEE Transactions on Power Electronics. 33, 12, p. 10051-10054 4 p., 8350334.

Research output: Contribution to journalArticle

Charging (batteries)
Electric potential
1 Citation (Scopus)

A fully integrated switched-capacitor DC–DC converter with hybrid output regulation

Chung, K., Hong, S. K. & Kwon, O-K., 2018 Jan 1, In : Analog Integrated Circuits and Signal Processing. 94, 1, p. 117-126 10 p.

Research output: Contribution to journalArticle

Capacitors
Capacitance
Switching frequency
Switches
Modulation
3 Citations (Scopus)

A highly accurate current LED lamp driver with removal of low-frequency flicker using average current control method

Ahn, H. A., Hong, S. K. & Kwon, O-K., 2018 Oct 1, In : IEEE Transactions on Power Electronics. 33, 10, p. 8741-8753 13 p.

Research output: Contribution to journalArticle

Electric current control
Electric lamps
Light emitting diodes
Electric potential
Metals
1 Citation (Scopus)

A highly accurate solenoid valve driver with current sensing circuits for brake systems

Lee, C. W. & Kwon, O. K., 2018 Jan 1, In : IEICE Electronics Express. 15, 2, 20171029.

Research output: Contribution to journalLetter

solenoid valves
Solenoid valves
brakes
Brakes
Networks (circuits)
3 Citations (Scopus)

A highly linear and accurate fork-shaped electrode pattern for large-sized capacitive touch screen panels

Lee, S. H., An, J. S., Hong, S. K. & Kwon, O. K., 2018 Aug 1, In : IEEE Sensors Journal. 18, 15, p. 6345-6351 7 p.

Research output: Contribution to journalArticle

forks
Touch screens
touch
Electrodes
electrodes
Organic light emitting diodes (OLED)
DC-DC converters
Silicon
Electric potential
Pixels
1 Citation (Scopus)

A low-power 12-bit extended counting adc without calibration for CMOS Image Sensors

Jeon, B. K., Hong, S. K. & Kwon, O-K., 2018 Jul 1, In : IEEE Transactions on Circuits and Systems II: Express Briefs. 65, 7, p. 824-828 5 p.

Research output: Contribution to journalArticle

Image sensors
Digital to analog conversion
Calibration
Electric power utilization
Capacitors

A low-power analog delay line using a current-splitting method for 3-D ultrasound imaging systems

Jeong, J. Y., An, J. S., Jung, S. J., Hong, S. K. & Kwon, O-K., 2018 Jul 1, In : IEEE Transactions on Circuits and Systems II: Express Briefs. 65, 7, p. 829-833 5 p.

Research output: Contribution to journalArticle

Electric delay lines
Imaging systems
Ultrasonics
Electric power utilization
Data storage equipment
6 Citations (Scopus)
Light emitting diodes
Luminance
Display devices
Pixels
Compensation and Redress
1 Citation (Scopus)

An AMOLED pixel circuit for high image quality of 1000 ppi mobile displays in AR and VR applications

Keum, N. H., Hong, S. K., Chai, C. C. & Kwon, O. K., 2018 Feb 1, In : Journal of the Society for Information Display. 26, 2, p. 71-78 8 p.

Research output: Contribution to journalArticle

virtual reality
Image quality
Pixels
pixels
Display devices
Liquid crystal displays
liquid crystals
optimization
high resolution
Electric potential
2 Citations (Scopus)

An Ultra-Low-Power 16-Bit Second-Order Incremental ADC with SAR-Based Integrator for IoT Sensor Applications

Shim, J., Kim, M. K., Hong, S. K. & Kwon, O. K., 2018 Dec, In : IEEE Transactions on Circuits and Systems II: Express Briefs. 65, 12, p. 1899-1903 5 p., 8329978.

Research output: Contribution to journalArticle

Digital to analog conversion
Electric power utilization
Sensors
Capacitors
Operational amplifiers
5 Citations (Scopus)

Capacitive Touch Systems with Styli for Touch Sensors: A Review

Kwon, O. K., An, J. S. & Hong, S. K., 2018 Jun 15, In : IEEE Sensors Journal. 18, 12, p. 4832-4846 15 p.

Research output: Contribution to journalArticle

touch
Integrated circuits
sensors
Sensors
integrated circuits
3 Citations (Scopus)

Effects of Stacked Mo-Ti/Cu Source and Drain Electrodes on the Performance of Amorphous In-Ga-Zn-O Thin-Film Transistors

Kim, L. Y. & Kwon, O-K., 2018 Jan 1, In : IEEE Electron Device Letters. 39, 1, p. 43-46 4 p., 8094877.

Research output: Contribution to journalArticle

Thin film transistors
Electrodes
Threshold voltage
Energy dispersive spectroscopy
Materials properties
5 Citations (Scopus)

High-efficient inverting buck-boost converter with fully digital-controlled switch width modulation for microdisplays

Shin, S. H., Hong, S. K. & Kwon, O. K., 2018 Mar 8, In : Electronics Letters. 54, 5, p. 309-311 3 p.

Research output: Contribution to journalArticle

Switches
Modulation
Electric potential

Highly accurate average current controller using charge sharing method for LED lamp driver

Ahn, H. A., Hong, S. K. & Kwon, O. K., 2018 Apr 5, In : Electronics Letters. 54, 7, p. 439-441 3 p.

Research output: Contribution to journalArticle

Electric lamps
Light emitting diodes
Controllers
Lighting
Electric potential
4 Citations (Scopus)

Multi-way interactive capacitive touch system with palm rejection of active stylus for 86' touch screen panels

An, J. S., Han, S. H., Park, K. B., Kim, J. E., Ye, J. H., Lee, S. H., Jeong, J. Y., Kim, J. S., Baek, K. H., Chung, K. S., Hong, S. K. & Kwon, O. K., 2018 Mar 8, 2018 IEEE International Solid-State Circuits Conference, ISSCC 2018. Institute of Electrical and Electronics Engineers Inc., p. 182-184 3 p. (Digest of Technical Papers - IEEE International Solid-State Circuits Conference; vol. 61).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Touch screens
2017
10 Citations (Scopus)

A 3.9kHz-frame-rate capacitive touch system with pressure/tilt angle expressions of active stylus using multiple-frequency driving method for 65? 104×64 touch screen panel

An, J. S., Han, S. H., Kim, J. E., Yoon, D. H., Kim, Y. H., Hong, H. H., Ye, J. H., Jung, S. J., Lee, S. H., Jeong, J. Y., Baek, K. H., Hong, S. K. & Kwon, O. K., 2017 Mar 2, 2017 IEEE International Solid-State Circuits Conference, ISSCC 2017. Fujino, L. C. (ed.). Institute of Electrical and Electronics Engineers Inc., p. 168-169 2 p. 7870314. (Digest of Technical Papers - IEEE International Solid-State Circuits Conference; vol. 60).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Touch screens
Transducers
Capacitance
Display devices
Electrodes

A CMOS-based temperature sensor with subthreshold operation for low-voltage and low-power on-chip thermal monitoring

Na, J. S., Shin, W., Kwak, B. C., Hong, S. K. & Kwon, O. K., 2017 Feb, In : Journal of Semiconductor Technology and Science. 17, 1, p. 29-34 6 p.

Research output: Contribution to journalArticle

Temperature sensors
Monitoring
Electric potential
Temperature
Hysteresis
3 Citations (Scopus)
Zinc Oxide
gallium oxides
Gallium
Indium
flicker
8 Citations (Scopus)

A driving method of pixel circuit using a-IGZOTFT for suppression of threshold voltage shift in AMLED displays

Shin, W. S., Ahn, H. A., Na, J. S., Hong, S. K., Kwon, O. K., Lee, J. H., Um, J. G., Jang, J., Kim, S. H. & Lee, J. S., 2017 Jun, In : IEEE Electron Device Letters. 38, 6, p. 760-762 3 p., 7914633.

Research output: Contribution to journalArticle

Threshold voltage
Zinc Oxide
Gallium
Indium
Pixels
5 Citations (Scopus)

A fast and compact charger for an Li-Ion battery using successive built-in resistance detection

Chung, K., Hong, S. K. & Kwon, O-K., 2017 Feb 1, In : IEEE Transactions on Circuits and Systems II: Express Briefs. 64, 2, p. 161-165 5 p., 7453149.

Research output: Contribution to journalArticle

Electric potential
Lithium-ion batteries

A fast transient LED driver with adaptive frequency control according to load variation for large-sized LCD backlights

Jung, Y. H., Hong, S. K. & Kwon, O-K., 2017 Dec 1, In : Journal of the Society for Information Display. 25, 12, p. 712-724 13 p.

Research output: Contribution to journalArticle

frequency control
Liquid crystal displays
Light emitting diodes
light emitting diodes
direct current
1 Citation (Scopus)

A high-efficient and fast-transient buck-boost converter using adaptive direct path skipping and on-duty modulation

Jung, Y. H., Hong, S. K. & Kwon, O-K., 2017 Dec 1, In : Microelectronics Journal. 70, p. 43-51 9 p.

Research output: Contribution to journalArticle

acceleration (physics)
Transient analysis
Mobile devices
converters
Modulation
10 Citations (Scopus)

A Highly Noise-Immune Capacitive Touch Sensing System Using an Adaptive Chopper Stabilization Method

An, J. S., Jung, S. J., Hong, S. K. & Kwon, O. K., 2017 Feb 1, In : IEEE Sensors Journal. 17, 3, p. 803-811 9 p., 7775075.

Research output: Contribution to journalArticle

electric choppers
touch
Stabilization
stabilization
Integrated circuits
1 Citation (Scopus)
Mobile devices
Pumps
Sensors
Electric potential
2 Citations (Scopus)

A low-power single-ended 11-bit SA-ADC with 1 v supply voltage and 2 v input voltage range for CMOS image sensors

Shim, J., Kim, M. K., Hong, S. K. & Kwon, O-K., 2017 Jan 3, 2016 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2016. Institute of Electrical and Electronics Engineers Inc., p. 410-413 4 p. 7803989

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Digital to analog conversion
Image sensors
Electric potential
Electric power utilization
Analog circuits
2 Citations (Scopus)

An AMOLED Panel Test System Using Universal Data Driver ICs for Various Pixel Structures

Seol, H. C., Ra, J. H., Hong, S. K. & Kwon, O. K., 2017 Jan, In : IEEE Transactions on Electron Devices. 64, 1, p. 189-194 6 p., 7756402.

Research output: Contribution to journalArticle

Organic light emitting diodes (OLED)
Pixels
Thin film transistors
Digital to analog conversion
Field programmable gate arrays (FPGA)
1 Citation (Scopus)
digital to analog converters
Flat panel displays
flat panel displays
Digital to analog conversion
integrated circuits
6 Citations (Scopus)

A small-area and low-power scan driver using a coplanar a-IGZO thin-film transistor with a dual-gate for liquid crystal displays

Kim, D. S. & Kwon, O-K., 2017 Feb 1, In : IEEE Electron Device Letters. 38, 2, p. 195-198 4 p., 7782375.

Research output: Contribution to journalArticle

Zinc Oxide
Gallium
Indium
Thin film transistors
Zinc oxide
3 Citations (Scopus)

A Tileable CMOS X-Ray Line Detector Using Time-Delay-Integration with Pseudomultisampling for Large-Sized Dental X-Ray Imaging Systems

Jo, Y. R., Hong, S. K. & Kwon, O-K., 2017 Jan 1, In : IEEE Transactions on Electron Devices. 64, 1, p. 211-216 6 p., 7774983.

Research output: Contribution to journalArticle

Imaging systems
Time delay
Detectors
X rays
Digital to analog conversion
1 Citation (Scopus)

Dual CDS scheme embedded in SAR-based ADCs for low-noise CMOS imagers without a PGA

Kim, M. K., Hong, S. K., Gou, J. & Kwon, O-K., 2017 Jan 5, In : Electronics Letters. 53, 1, p. 16-18 3 p.

Research output: Contribution to journalArticle

Digital to analog conversion
Image sensors
Sampling
Capacitors
Electric potential
2 Citations (Scopus)

Highly accurate and power-efficient battery charger with charging current compensator for wearable devices

Jung, Y. H., Hong, S. K. & Kwon, O-K., 2017 Mar 30, In : Electronics Letters. 53, 7, p. 461-463 3 p.

Research output: Contribution to journalArticle

Electric potential
Charging (batteries)
Energy dissipation
3 Citations (Scopus)

Low-Power Low-Noise Amplifier Using Attenuation-Adaptive Noise Control for Ultrasound Imaging Systems

Jung, S. J., Hong, S. K. & Kwon, O-K., 2017 Feb 1, In : IEEE Transactions on Biomedical Circuits and Systems. 11, 1, p. 108-116 9 p., 7497601.

Research output: Contribution to journalArticle

Acoustic variables control
Low noise amplifiers
Power amplifiers
Imaging systems
Ultrasonics
2016
14 Citations (Scopus)

A 2822-ppi resolution pixel circuit with high luminance uniformity for oled microdisplays

Kwak, B. C. & Kwon, O. K., 2016 Oct, In : Journal of Display Technology. 12, 10, p. 1083-1088 6 p., 7516639.

Research output: Contribution to journalArticle

luminance
Luminance
Pixels
pixels
Networks (circuits)
1 Citation (Scopus)

A 70 MHz temperature-compensated on-chip CMOS relaxation oscillator for mobile display driver ICs

Chung, K., Hong, S. K. & Kwon, O. K., 2016 Dec, In : Journal of Semiconductor Technology and Science. 16, 6, p. 728-735 8 p.

Research output: Contribution to journalArticle

Relaxation oscillators
Display devices
Bias currents
Temperature
Energy gap
6 Citations (Scopus)

A Fast Switching Current Regulator Using Slewing Time Reduction Method for High Dimming Ratio of LED Backlight Drivers

Ahn, H. A., Hong, S. K. & Kwon, O. K., 2016 Nov, In : IEEE Transactions on Circuits and Systems II: Express Briefs. 63, 11, p. 1014-1018 5 p., 7442817.

Research output: Contribution to journalArticle

Light emitting diodes
Electric breakdown
Image quality
Display devices
Electric potential
7 Citations (Scopus)

A highly linear and accurate touch data extraction algorithm based on polar coordinates for large-sized capacitive touch screen panels

An, J. S., Hong, S. K. & Kwon, O. K., 2016 Nov, In : IEEE Transactions on Consumer Electronics. 62, 4, p. 341-348 8 p., 7838085.

Research output: Contribution to journalArticle

Touch screens
Electrodes
Transmitters
9 Citations (Scopus)

A low-noise and area-efficient PWM-ΔΣ ADC using a single-slope quantizer for CMOS image sensors

Jo, Y. R., Hong, S. K. & Kwon, O-K., 2016 Jan 1, In : IEEE Transactions on Electron Devices. 63, 1, p. 168-173 6 p., 7112101.

Research output: Contribution to journalArticle

Digital to analog conversion
Image sensors
Pixels
Modulation
Color
5 Citations (Scopus)

A low-power 10-bit single-slope adc using power gating and multi-clocks for CMOS image sensors

Jeon, B. K., Hong, S. K. & Kwon, O. K., 2016 Dec 27, ISOCC 2016 - International SoC Design Conference: Smart SoC for Intelligent Things. Institute of Electrical and Electronics Engineers Inc., p. 257-258 2 p. 7799775. (ISOCC 2016 - International SoC Design Conference: Smart SoC for Intelligent Things).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

analog to digital converters
Digital to analog conversion
Image sensors
clocks
Clocks
2 Citations (Scopus)

A Low-Power Two-Tap Voltage-Mode Transmitter with Precisely Matched Output Impedance Using an Embedded Calibration Circuit

Kwak, K. S., Ra, J. H., Moon, H. S., Hong, S. K. & Kwon, O-K., 2016 Jun 1, In : IEEE Transactions on Circuits and Systems II: Express Briefs. 63, 6, p. 573-577 5 p., 7410021.

Research output: Contribution to journalArticle

Transmitters
Calibration
Resistors
Networks (circuits)
Electric potential
1 Citation (Scopus)

A luminance compensation method using optical sensors with optimized memory size for high image quality AMOLED displays

Oh, K., Hong, S. K. & Kwon, O. K., 2016 Oct, In : Journal of the Optical Society of Korea. 20, 5, p. 586-592 7 p.

Research output: Contribution to journalArticle

optical measuring instruments
luminance
light emitting diodes
matrices
nonuniformity
9 Citations (Scopus)

An Area-Efficient and Low-Power 12-b SAR/Single-Slope ADC Without Calibration Method for CMOS Image Sensors

Kim, M. K., Hong, S. K. & Kwon, O. K., 2016 Sep, In : IEEE Transactions on Electron Devices. 63, 9, p. 3599-3604 6 p., 7515162.

Research output: Contribution to journalArticle

Digital to analog conversion
Image sensors
Calibration
Capacitors
Analog circuits
8 Citations (Scopus)

An Area-Efficient High-Resolution Resistor-String DAC with Reverse Ordering Scheme for Active Matrix Flat-Panel Display Data Driver ICs

Seol, H. C., Hong, S. K. & Kwon, O. K., 2016 Aug, In : Journal of Display Technology. 12, 8, p. 828-834 7 p., 7399692.

Research output: Contribution to journalArticle

digital to analog converters
Flat panel displays
flat panel displays
Digital to analog conversion
resistors