Enhancing Micro-LED Pixel Circuit Performance through Threshold Voltage Compensation Utilizing LTPO Technology

Yan Li; Hwarim Im; Kook Chol Moon; Yong Sang Kim

doi:10.1002/sdtp.17053

Enhancing Micro-LED Pixel Circuit Performance through Threshold Voltage Compensation Utilizing LTPO Technology

Yan Li
, Hwarim Im
, Kook Chol Moon
, Yong Sang Kim

Sungkyunkwan University

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

In this paper, we proposed a new low-temperate polycrystalline silicon and oxide (LTPO) thin film transistor (TFT) pixel circuit for micro light-emitting diode (µLED) displays. This design considers the current-sensitive attributes of µLEDs and employs a hybrid driving approach involving Pulse Width Modulation (PWM) and Pulse Amplitude Modulation (PAM). The proposed pixel circuit can not only compensate the threshold voltages of the two driving TFTs, but also reduce the voltage drop by current (IR drop) of the entire backplane through compensation and offset.

Original language	English
Pages (from-to)	267-268
Number of pages	2
Journal	Digest of Technical Papers - SID International Symposium
Volume	55
Issue number	S1
DOIs	https://doi.org/10.1002/sdtp.17053
State	Published - 2024
Externally published	Yes
Event	International Conference on Display Technology, 2024 - Hefei, China Duration: 31 Mar 2024 → 3 Apr 2024

Keywords

IR drop
LTPO
Micro light-emitting diode
pixel circuit
threshold voltage

Access to Document

10.1002/sdtp.17053

Cite this

@article{20f2feb14d124073a29d901947c3a2fe,

title = "Enhancing Micro-LED Pixel Circuit Performance through Threshold Voltage Compensation Utilizing LTPO Technology",

abstract = "In this paper, we proposed a new low-temperate polycrystalline silicon and oxide (LTPO) thin film transistor (TFT) pixel circuit for micro light-emitting diode (µLED) displays. This design considers the current-sensitive attributes of µLEDs and employs a hybrid driving approach involving Pulse Width Modulation (PWM) and Pulse Amplitude Modulation (PAM). The proposed pixel circuit can not only compensate the threshold voltages of the two driving TFTs, but also reduce the voltage drop by current (IR drop) of the entire backplane through compensation and offset.",

keywords = "IR drop, LTPO, Micro light-emitting diode, pixel circuit, threshold voltage",

author = "Yan Li and Hwarim Im and Moon, \{Kook Chol\} and Kim, \{Yong Sang\}",

note = "Publisher Copyright: {\textcopyright} 2024 John Wiley and Sons Inc. All rights reserved.; International Conference on Display Technology, 2024 ; Conference date: 31-03-2024 Through 03-04-2024",

year = "2024",

doi = "10.1002/sdtp.17053",

language = "English",

volume = "55",

pages = "267--268",

journal = "Digest of Technical Papers - SID International Symposium",

issn = "0097-966X",

publisher = "John Wiley and Sons Inc",

number = "S1",

}

TY - JOUR

T1 - Enhancing Micro-LED Pixel Circuit Performance through Threshold Voltage Compensation Utilizing LTPO Technology

AU - Li, Yan

AU - Im, Hwarim

AU - Moon, Kook Chol

AU - Kim, Yong Sang

PY - 2024

Y1 - 2024

N2 - In this paper, we proposed a new low-temperate polycrystalline silicon and oxide (LTPO) thin film transistor (TFT) pixel circuit for micro light-emitting diode (µLED) displays. This design considers the current-sensitive attributes of µLEDs and employs a hybrid driving approach involving Pulse Width Modulation (PWM) and Pulse Amplitude Modulation (PAM). The proposed pixel circuit can not only compensate the threshold voltages of the two driving TFTs, but also reduce the voltage drop by current (IR drop) of the entire backplane through compensation and offset.

AB - In this paper, we proposed a new low-temperate polycrystalline silicon and oxide (LTPO) thin film transistor (TFT) pixel circuit for micro light-emitting diode (µLED) displays. This design considers the current-sensitive attributes of µLEDs and employs a hybrid driving approach involving Pulse Width Modulation (PWM) and Pulse Amplitude Modulation (PAM). The proposed pixel circuit can not only compensate the threshold voltages of the two driving TFTs, but also reduce the voltage drop by current (IR drop) of the entire backplane through compensation and offset.

KW - IR drop

KW - LTPO

KW - Micro light-emitting diode

KW - pixel circuit

KW - threshold voltage

UR - https://www.scopus.com/pages/publications/85200226597

U2 - 10.1002/sdtp.17053

DO - 10.1002/sdtp.17053

M3 - Conference article

AN - SCOPUS:85200226597

SN - 0097-966X

VL - 55

SP - 267

EP - 268

JO - Digest of Technical Papers - SID International Symposium

JF - Digest of Technical Papers - SID International Symposium

IS - S1

T2 - International Conference on Display Technology, 2024

Y2 - 31 March 2024 through 3 April 2024

ER -

Enhancing Micro-LED Pixel Circuit Performance through Threshold Voltage Compensation Utilizing LTPO Technology

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this