1
Webster E Howard, Olivier Prache: OLED active matrix using a single transistor current mode pixel design. Fed Corporation, Collier Shannon Rill & Scott PLLC, February 8, 2000: US06023259 (234 worldwide citation)

The present invention is a current driver for an active matrix organic light emitting device display. As embodied herein, the driver relies upon a single transistor, driven in a saturation regime to provide a current source for an OLED. This results in a pulse drive. The driver of the present invent ...


2
Guy Wicker, Louis D Swartz, Daniel H O Donnell, John A Heslip, Vincent D Cannella, Olivier Prache, Mark H McCormick Goodhart, Marvin C Barnes: Digitizing wand adapted for manual and automatic operation. Ovonic Imaging Systems, Marvin S Siskind, Richard M Goldman, Kenneth M Massaroni, December 20, 1988: US04792859 (19 worldwide citation)

Digitizing apparatus for reproducing information from an image-bearing member, said apparatus including a wand removably mounted on a base station. The wand is adapted for independent operation to manually scan said image-bearing member or the wand can be secured to the base station for automaticall ...


3
Shashi D Malaviya, Olivier Prache: Method and apparatus for sequential memory addressing. eMagin Corporation, David R Yohannan, Collier Shannon Scott PLLC, April 10, 2001: US06215840 (3 worldwide citation)

Circuits for sequentially addressing memory locations in time with pulses received from a clock are disclosed. The circuits may provide a positive voltage output signal at successive output nodes associated with corresponding stages in the circuit responsive to the application of a clock signal to t ...


4
Munisamy Anandan, Olivier Prache: Large area spacer-less field emissive display package. FED Corporation, March 6, 2001: US06198214 (3 worldwide citation)

In order to operate Field Emission Displays (“FEDs”) contain an evacuated space. Generally, two soda-lime glass substrates, separated by a vacuum gap, act as cathode and anode. The vacuum gap is essential for the electrons to be emitted from the sharp cathode tips and travel towards the anode to giv ...


5
Ihor Wacyk, Olivier Prache: Auto-calibrating gamma correction circuit for AMOLED pixel display driver. eMagin Corporation, Robert L Epstein, Epstein Drangel, July 31, 2012: US08232931 (1 worldwide citation)

A drive circuit is provided for an OLED in a pixel array. The circuit includes input voltage signal receiving means. Output voltage signal generating means are operably connected to the pixel diode. Means are provided for processing the input voltage signal to replicate the inverse IV characteristic ...


6
Ihor Wacyk, Olivier Prache: AMOLED microdisplay device with active temperature control. eMagin Corporation, Kaplan Breyer Schwarz & Ottensen, Janine D Geraigery Esq, November 8, 2016: US09489887

An active-matrix organic light-emitting diode microdisplay device having a temperature control system including a temperature sensor and a control means for regulating the temperature of the OLED. The temperature is regulated by a bias transistor within the circuit, operating as a function of the te ...


7
Ihor Wacyk, Olivier Prache: OLED active matrix cell designed for optimal uniformity. eMagin Corporation, Epstein Drangel Bazerman & James, October 11, 2007: US20070236440-A1

A drive circuit is provided for an OLED pixel display. The drive circuit is adapted for use with a reference voltage source. It includes a first transistor and an OLED. The output circuit of the first transistor is operably connected between the reference voltage source and the OLED. Transmission ga ...


8
Ihor Wacyk, Olivier Prache: Auto-calibrating gamma correction circuit for AMOLED pixel display driver. eMagin Corporation, Epstein Drangel Bazerman & James, October 11, 2007: US20070236419-A1

A drive circuit is provided for an OLED in a pixel array. The circuit includes input voltage signal receiving means. Output voltage signal generating means are operably connected to the pixel diode. Means are provided for processing the input voltage signal to replicate the inverse IV characteristic ...


9
Ihor Wacyk, Olivier Prache: Dual-mode amoled pixel driver, a system using a dual-mode amoled pixel driver, and a method of operating a dual-mode amoled pixel driver. Emagin Corporation, March 31, 2011: US20110074758-A1

The present innovation provides a system for driving an OLED pixel that includes an arrangement for driving the OLED pixel in a voltage mode and an arrangement for driving the OLED pixel in a current mode. The system includes an arrangement for switching between the voltage mode and the current mode ...


10
Ihor Wacyk, Olivier Prache: Method of driving an organic light emitting diode (oled) pixel, a system for driving an oled pixel and a computer-readable medium. Emagin Corporation, April 7, 2011: US20110080441-A1

A new drive scheme is provided for OLED displays that uses a pulsed drive mode. The pulsed drive mode results in a reduced duty cycle for pixel operation. The peak OLED current is increased correspondingly to maintain a constant average luminance over the frame period so that there is no brightness ...