Design of a CMOS on‐chip driver circuit for active matrix polymer electroluminescent displays

Lee, Cheon An; Woo, Dong Soo; Kwon, Hyuck In; Yoon, Yong Jin; Lee, Jong Duk; Park, Byung‐Gook

doi:10.1080/15980316.2002.9651889

Cited by 2 publications

(1 citation statement)

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“…To implement 16 gray scales, 4 bit D/A converters using pMOS transistors [6] (Fig. 2(c)) are integrated.…”

Section: Introductionmentioning

confidence: 99%

Design of a 16 gray scales 320 × 240 pixels OLED-on-silicon driving circuit

Huang¹,

Wang²,

Wang³

et al. 2009

J. Semicond.

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A 320×240 pixel organic-light-emitting-diode-on-silicon (OLEDoS) driving circuit is implemented using the standard 0.5 µm CMOS process of CSMC. It gives 16 gray scales with integrated 4 bit D/A converters. A threetransistor voltage-programmed OLED pixel driver is proposed, which can realize the very small current driving required for the OLEDoS microdisplay. Both the D/A converter and the pixel driver are implemented with pMOS devices. The pass-transistor and capacitance in the OLED pixel driver can be used to sample the output of the D/A converter. An additional pMOS is added to OLED pixel driver, which is used to control the D/A converter operating only when one row is on. This can reduce the circuit's power consumption. This driving circuit can work properly in a frame frequency of 50 Hz, and the final layout of this circuit is given. The pixel area is 28.4 × 28.4 µm 2 and the display area is 10.7 × 8.0 mm 2 (the diagonal is about 13 mm). The measured pixel gray scale voltage shows that the function of the driver circuit is correct, and the power consumption of the chip is about 350 mW.

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“…To implement 16 gray scales, 4 bit D/A converters using pMOS transistors [6] (Fig. 2(c)) are integrated.…”

Section: Introductionmentioning

confidence: 99%