18.1: A 0.23‐in. High‐Resolution OLED Microdisplay for Wearable Displays

Asaki, Reo; Yokoyama, Seiichi; Kitagawa, Hideyuki; Makimura, Shingo; Abe, Fumiaki; Yamazaki, Takashi; Kato, Tatsuya; Kanno, M.; Onoyama, Yusuke; Hasegawa, Eiji; Uchino, Katsuhide

doi:10.1002/j.2168-0159.2014.tb00060.x

Cited by 28 publications

(21 citation statements)

References 5 publications

(6 reference statements)

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“…There are mainly two general driving methods for OLED microdisplays [4,5] : analog method and digital method. Digital driving is also called pulse width modulated driving (PWM) [6] .…”

Section: Atomized Scan Strategy 21 Pwm Scanmentioning

confidence: 99%

“…Search for low gray level scan sequences Q [m] Abstracting the scan matrix Q [ As an example of the atomized scan strategy, we choose the 100% transmission efficiency matrix Q [4] where the gray weight is 9:4:2:1. Base on Q [4] , the matrix Q {4,5} is set up with the gray weight 32:16:8:4:1:1:1:1. We use the number -4 to indicate the weight 1:1:1:1 in Q {4,5} for simplification.…”

Section: Atomized Scanmentioning

confidence: 99%

“…We use the number -4 to indicate the weight 1:1:1:1 in Q {4,5} for simplification. It then represents Q [4] . Q shows an atomized scan example with 241 gray levels.…”

Section: Atomized Scanmentioning

confidence: 99%

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16.5: Atomized scan strategy for high definition OLED microdisplay

Yuan

Huang

Chen

et al. 2018

Symp Digest of Tech Papers

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OLED (Organic Light Emitting Display) microdisplay is useful in near‐to‐eye applications like head mounted virtual reality displays and glass‐like augmented reality displays. With its ultra‐high pixel density above 3000 PPI (pixel per inch), the OLED microdisplay has very high display resolution while its physical size is rather small, typically less than one inch. Traditional microdisplay are analog driven with the serial scan sequential from the first pixel to the last pixel. This paper proposes a novel atomized scan strategy based on the digital fractal scan strategy with the pseudo‐random scan order. A color OLED microdisplay with 1600(*3)*1600 display resolution is designed and fabricated. It is driven with the digital atomized scan strategy. The test results show that the gray level of the microdisplay reaches 256 with the 50MHz pixel clock. The contrast and the power of the microdisplay are improved compared with the traditional analog drive OLED microdisplay.

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“…There are mainly two general driving methods for OLED microdisplays [4,5] : analog method and digital method. Digital driving is also called pulse width modulated driving (PWM) [6] .…”

Section: Atomized Scan Strategy 21 Pwm Scanmentioning

confidence: 99%

Section: Atomized Scanmentioning

confidence: 99%

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16.5: Atomized scan strategy for high definition OLED microdisplay

Yuan

Huang

Chen

et al. 2018

Symp Digest of Tech Papers

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“…Active‐matrix organic light‐emitting diode (AM‐OLED) microdisplays on a silicon backplane (M‐OLED) are establishing high recognition by incorporating in the mirror‐less camera as an electronic view finder (EVF) and the head mounted display . In addition, M‐OLED has recently attracted considerable attention as a suitable solution to augmented reality (AR) glasses for its superior image quality such as high contrast ratio and fast response time …”

Section: Introductionmentioning

confidence: 99%

“…1,2 In addition, M-OLED has recently attracted considerable attention as a suitable solution to augmented reality (AR) glasses for its superior image quality such as high contrast ratio and fast response time. 3,4 In both EVFs and AR glasses, a higher resolution has been strongly demanded. In M-OLED, a further increase in resolution is achieved by miniaturizing the pixel circuit further.…”

Section: Introductionmentioning

confidence: 99%

New pixel driving circuit using self‐discharging compensation method for high‐resolution OLED micro displays on a silicon backplane

Kimura¹,

Onoyama²,

Tanaka³

et al. 2017

J Soc Info Display

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A new 4T2C pixel circuit formed on a silicon substrate is proposed to realize a high‐resolution 7.8‐μm pixel pitch AMOLED microdisplay. In order to achieve high luminance uniformity, the pixel circuit compensates its Vth variation of the MOSFET for the driving transistor internally by using self‐discharging method. Also presented are 0.5‐in Quad‐VGA and 1.25‐in wide Quad‐XGA microdisplays with the proposed pixel circuit.

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Micro Light‐Emitting Diodes for Display and Flexible Biomedical Applications

Lee

Shin

Park

et al. 2019

Adv Funct Materials

138

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Inorganic-based micro light-emitting diodes (µLEDs) have witnessed significant improvements in terms of display and biomedical applications, which can shift the paradigm of future optoelectronic systems. In particular, µLED displays are on the verge of becoming the next big interface platform for visual communications, expanding to various internet of things and wearable/bioapplications. Novel µLED concepts need to be upgraded to be able to satisfy their potential optoelectric applications, such as virtual reality, smart watches, and medical sensors for individual computing in this hyperconnected society. Here, representative progresses in the field of flexible µLEDs are reviewed with regard to device structures, massive µLED transfers, methods for performance enhancement, and applications.

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18.1: A 0.23‐in. High‐Resolution OLED Microdisplay for Wearable Displays

Cited by 28 publications

References 5 publications

16.5: Atomized scan strategy for high definition OLED microdisplay

16.5: Atomized scan strategy for high definition OLED microdisplay

New pixel driving circuit using self‐discharging compensation method for high‐resolution OLED micro displays on a silicon backplane

Micro Light‐Emitting Diodes for Display and Flexible Biomedical Applications

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