Michael J O'Connor

US Patent:

20130105774, May 2, 2013

Filed:

Oct 26, 2012

Appl. No.:

13/661613

Inventors:

UNIVERSAL DISPLAY CORPORATION - Ewing NJ, US
Lech Michalski - Pennington NJ, US
Michael O'Connor - Ewing NJ, US
Woo-Young So - Richboro PA, US
Michael S. Weaver - Princeton NJ, US
Michael Hack - Princeton NJ, US
Julia J. Brown - Yardley PA, US

Assignee:

UNIVERSAL DISPLAY CORPORATION - Ewing NJ

International Classification:

H01L 27/32
H01L 51/56

US Classification:

257 40, 438 23, 257E27119, 257E51001

Abstract:

A circuit for a pixel in a display device includes drive circuitry, an organic light emitting diode in electrical connection with the drive circuitry, and at least one resistive current path which is selected to be non-emissive in electrical connection with the drive circuitry and in parallel with the organic light emitting diode.

US Patent:

20230011754, Jan 12, 2023

Filed:

Jun 21, 2022

Appl. No.:

17/845125

Inventors:

- Ewing NJ, US
Michael Stuart WEAVER - Princeton NJ, US
Nicholas J. THOMPSON - New Hope PA, US
Michael O'CONNOR - Ewing NJ, US

International Classification:

G09G 3/3233

Abstract:

Embodiments of the disclosed subject matter provide a device that includes an organic light emitting device (OLED), and a drive circuit to control the operation of the OLED, comprising a response time accelerator thin film transistor (TFT) configured to short or reverse bias the OLED for a predetermined period of time during a frame time. Other embodiments include an OLED having a plurality of sub-pixels, where one or more of sub-pixels configured to emit light of at least a first color comprises a first emissive area and a second emissive area that are independently controllable, where the first emissive area is larger than the second emissive area. The controller is configured to control the second emissive area to have (i) a higher brightness, and/or (ii) a higher current density than the first emissive area for a first sub-pixel luminance level that is less than a maximum luminance.

US Patent:

20150213747, Jul 30, 2015

Filed:

Dec 17, 2014

Appl. No.:

14/573762

Inventors:

Vadim ADAMOVICH - Yardley PA, US
Lech MICHALSKI - Pennington NJ, US
Michael Stuart WEAVER - Princeton NJ, US
Michael O'CONNOR - Ewing NJ, US

International Classification:

G09G 3/20
G09G 3/32

Abstract:

Techniques, devices, and systems are provided that allow for driving a device such as an OLED in various pulsed modes in which a momentary luminance greater than an apparent luminance at which the OLED is to be driven is used. The use of one or more pulsed modes allows for the lifetime of the OLED to be extended and reduces image sticking. Pulsed modes are also provided that allow for color tuning of the device by activating different portions of one or more emissive areas of the device.