The latest milestone in WOLED technology for OLED TV and IT displays: Enhancing efficiency, color gamut, and longevity DOI Open Access

Jung‐Keun Kim,

Byung‐Soo Kim, Jin Jang

et al.

Journal of the Society for Information Display, Journal Year: 2025, Volume and Issue: unknown

Published: March 31, 2025

Abstract This study introduces recent innovative progress in white organic light emitting diode (WOLED) technology for premium OLED TV and IT displays. By fabricating a four‐stack tandem device consisting of red, first blue, green, second blue devices sequence from the anode, we could achieve current efficiency WOLED up to 134 cd/A at 10 mA/cm 2 , resulting enhanced subpixels after transmitting color filters. The new implementing reached luminance levels 2,900, 1,000, 400 nit average picture level (APL) 3%, 25%, 100%, respectively, flash peak 4,000 nit. Since uses dopants saturated color, eliminating yellow green (YG) dopant used our previous WOLEDs, its gamut Broadcasting service Television (BT)‐2020 standard was widen 83%. We will explain how enhance lifetime terms structure materials.

Language: Английский

A 4T1C Pixel Circuit with Threshold Voltage Compensation for Organic Light-Emitting Diode on Silicon Microdisplays DOI Open Access
Jian Sun,

Chen Li,

Yuexin Cao

et al.

Electronics, Journal Year: 2025, Volume and Issue: 14(5), P. 824 - 824

Published: Feb. 20, 2025

In this paper, a pixel circuit consists of four MOSFETs and one capacitor is proposed for Organic Light-Emitting Diode on Silicon (OLEDoS) microdisplays. The enhances luminance uniformity by compensating the threshold voltage variation driving transistors capacitive coupling effect. Even with ±20 mV, HSPICE simulation results reveal that current offset stays between −0.89 0.70 LSB, which more than seven times smaller conventional 2T1C circuit. Additionally, two-stage DAC scheme has been utilized to achieve 256 gray levels, aiming reduce accuracy requirements demonstrates significant potential in high-performance OLEDoS microdisplay applications.

Language: Английский

Citations

0
Power consumption of light engines for emerging augmented reality glasses: perspectives and challenges DOI Creative Commons
Yizhou Qian, Zhiyong Yang,

Sung-Chun Chen

et al.

Advanced Photonics, Journal Year: 2025, Volume and Issue: 7(03)

Published: March 28, 2025

Language: Английский

Citations

0
5009‐ppi, 10000‐cd/m2, OLED/OS/Si structure display with built‐in CPU and display driver DOI Creative Commons

Yuki Tamatsukuri,

Akitsugu Miyairi,

Shoki Miyata

et al.

Journal of the Society for Information Display, Journal Year: 2025, Volume and Issue: unknown

Published: March 29, 2025

Abstract This study developed an organic light‐emitting diode display featuring c‐axis‐aligned crystalline oxide semiconductor (CAAC‐OS) field‐effect transistors (FETs) monolithically stacked over silicon (Si) FETs. achieved a definition of 5,009 ppi and luminance 10,000 cd/m 2 . Below the pixels incorporating CAAC‐OS FETs, both source scan drivers central processing unit (CPU; Cortex‐M0) were integrated using Si FETs without widening bezel. The findings indicate that built‐in CPU enables amplifier offset compensation, which is necessary for image quality correction, functional circuits beyond driver can operate on substrate.

Language: Английский

Citations

0
The latest milestone in WOLED technology for OLED TV and IT displays: Enhancing efficiency, color gamut, and longevity DOI Open Access

Jung‐Keun Kim,

Byung‐Soo Kim, Jin Jang

et al.

Journal of the Society for Information Display, Journal Year: 2025, Volume and Issue: unknown

Published: March 31, 2025

Abstract This study introduces recent innovative progress in white organic light emitting diode (WOLED) technology for premium OLED TV and IT displays. By fabricating a four‐stack tandem device consisting of red, first blue, green, second blue devices sequence from the anode, we could achieve current efficiency WOLED up to 134 cd/A at 10 mA/cm 2 , resulting enhanced subpixels after transmitting color filters. The new implementing reached luminance levels 2,900, 1,000, 400 nit average picture level (APL) 3%, 25%, 100%, respectively, flash peak 4,000 nit. Since uses dopants saturated color, eliminating yellow green (YG) dopant used our previous WOLEDs, its gamut Broadcasting service Television (BT)‐2020 standard was widen 83%. We will explain how enhance lifetime terms structure materials.

Language: Английский

Citations

0