James H Atherton

US Patent:

6348906, Feb 19, 2002

Filed:

Aug 26, 1999

Appl. No.:

09/384063

Inventors:

Robin Mark Adrian Dawson - Princeton NJ
Zilan Shen - Lawrenceville NJ
Alfred Charles Ipri - Princeton NJ
Roger Green Stewart - Neshanic Station NJ
James Harold Atherton - Ringoes NJ
Stephen John Connor - Trenton NJ

Assignee:

Sarnoff Corporation - Princeton NJ

International Classification:

G09G 332

US Classification:

345 82, 345 92, 345 98, 345100

Abstract:

A row-select circuit for an organic light emitting diode display propagates a gating pulse through a shift register. This gating pulse is synchronized with a system clock signal and is used to selectively apply a plurality of broadcast control signals to a selected row of pixels on the display. The line scanning circuitry is controlled to clear and autozero the pixels in the display either one line at a time or the entire image frame at a time. According to another aspect of the invention, the clearing of a row of pixels in the display is performed over several line intervals before the row is autozeroed and loaded with new values. According to yet another aspect of the invention, the broadcast control signals may be adapted to achieve the best performance for each display device.

US Patent:

6370019, Apr 9, 2002

Filed:

Feb 16, 1999

Appl. No.:

09/250329

Inventors:

Dennis Lee Matthies - Princeton NJ
Zilan Shen - Lawrenceville NJ
Roger Green Stewart - Neshanic Station NJ
James Harold Atherton - Ringoes NJ

Assignee:

Sarnoff Corporation - Princeton NJ

International Classification:

H05K 118

US Classification:

361681, 361682, 345 50, 345 55, 345 59, 349153, 313422, 313495, 3151691, 3151692, 3151693

Abstract:

A plurality of sealing methods may be used either alone or in combination with each other to seal an electronic display structure. The display module includes a first substrate having a plurality of column electrodes. Each of a plurality of portions of a display material are coupled to one of the plurality of column electrodes and to one of a plurality of row electrodes. A pixel seal may be formed over the display material to encapsulate the display material. An area seal may be formed upon the first substrate to encapsulates the row electrodes, the column electrodes, and the portions of display material. A bead seal may be formed around the perimeter of the first substrate to couple it to a second substrate while sealing the internal display material. An edge seal may be formed by a banded structure spanning from the first substrate to the second substrate and extending around the perimeter of the substrates.

US Patent:

6466194, Oct 15, 2002

Filed:

Dec 29, 1999

Appl. No.:

09/474293

Inventors:

James Harold Atherton - Ringoes NJ

Assignee:

Sarnoff Corporation - Princeton NJ

International Classification:

G09G 336

US Classification:

345100, 345204

Abstract:

A display device includes a column driver having an initialization sequence in the vertical blanking interval. The signal used to render the column driver TFT conductive is determined in the vertical blanking interval and maintained on a capacitor in the column driver for the duration of the vertical field. The column driver also includes an autozero comparator which is subject to the autozero operation during the vertical blanking interval.

US Patent:

6476783, Nov 5, 2002

Filed:

Feb 16, 1999

Appl. No.:

09/250347

Inventors:

Dennis Lee Matthies - Princeton NJ
Zilan Shen - Lawrenceville NJ
Roger Green Stewart - Neshanic Station NJ
James Harold Atherton - Ringoes NJ

Assignee:

Sarnoff Corporation - Princeton NJ

International Classification:

G09G 332

US Classification:

345 82, 345 32, 257 98, 257435, 349110

Abstract:

A display device having features which enhance the contrast of displayed images includes a pixel structure that defines an active pixel area and an inactive pixel area. The display device may be an emissive device such as an OLED or electroluminescent device, a transmissive device such as a liquid crystal light-valve device or a reflective device, such as a Bistable, Reflective Cholesteric (BRC) liquid crystal device. The ratio of the active pixel area to the total pixel area is less than 50 percent. The display device includes a transparent cover plate having a black matrix formed on the viewer side of the cover plate. The display device may be a tiled display in which case the black matrix is formed on an integrator plate to which the individual tiles are bound to form the complete display device. For reflective or emissive display materials, the display device includes an electronics section including a circuit board which provides driving signals for the pixels of the display device. The electronics section is bound to the display section by an adhesive.

US Patent:

6507327, Jan 14, 2003

Filed:

Jan 21, 2000

Appl. No.:

09/490012

Inventors:

James Harold Atherton - Ringoes NJ
Michael Gillis Kane - Somerset NJ

Assignee:

Sarnoff Corporation - Princeton NJ

International Classification:

G09G 328

US Classification:

345 68, 345 60, 345 66, 345 67, 345204, 3151691, 3151692, 3151694

Abstract:

A three electrode plasma display panel (PDP) operates in concurrent sustain and addressing periods, rather than separating the sustain and addressing periods. Because of this concurrent operation, a PDP with a brighter display is produced. Crosstalk between sustain electrodes and the column electrodes of non-selected rows is mitigated by implementing column voltages such that there is no difference in crosstalk brightness levels in non-addressed pixels in the on state compared to non-addressed pixels in the off state. This is accomplished by choosing column voltages that are approximately symmetric about one-half of the sustain voltage.

US Patent:

6618030, Sep 9, 2003

Filed:

Feb 27, 2001

Appl. No.:

09/793933

Inventors:

Michael Gillis Kane - Skillman NJ
James Harold Atherton - Ringoes NJ
Roger Green Stewart - Neshanic Station NJ
Frank Paul Cuomo - Princeton NJ

Assignee:

Sarnoff Corporation - Princeton NJ
Mitsubishi Chemical Corporation - Tokyo

International Classification:

G09G 336

US Classification:

345 82

Abstract:

LED pixel structures and methods that improve brightness uniformity by reducing current nonuniformities in a light-emitting diode of the pixel structures are disclosed.

US Patent:

6897855, May 24, 2005

Filed:

Feb 16, 1999

Appl. No.:

09/250324

Inventors:

Dennis Lee Matthies - Princeton NJ, US
Roger Green Stewart - Neshanic Station NJ, US
James Harold Atherton - Ringoes NJ, US
Dennis J. Bechis - Yardley PA, US
Heinz H. Busta - Plainsboro NJ, US
Zilan Shen - Lawrenceville NJ, US

Assignee:

Sarnoff Corporation - Princeton NJ

International Classification:

G09G005/00

US Classification:

345204, 345 74, 345 77, 345 80, 345147, 345205, 345206, 345211, 345212, 345214, 348383

Abstract:

A tiled display device is formed from display tiles having picture element (pixel) positions defined up to the edge of the tiles. Each pixel position has an organic light-emitting diode (OLED) active area which occupies approximately 25 percent of the pixel area. Each tile includes a memory which stores display data, and pixel driving circuitry which controls the scanning and illumination of the pixels on the tile. The pixel driving circuitry is located on the back side of the tile and connections to pixel electrodes on the front side of the tile are made by vias which pass through portions of selected ones of the pixel areas which are not occupied by the active pixel material. The tiles are to formed in two parts, an electronics section and a display section. Each of these parts includes connecting pads which cover several pixel positions. Each connecting pad makes an electrical connection to only one row electrode or column electrode.

US Patent:

7592970, Sep 22, 2009

Filed:

Oct 1, 2004

Appl. No.:

10/956661

Inventors:

Dennis Lee Matthies - Princeton NJ, US
Roger Green Stewart - Neshanic Station NJ, US
James Harold Atherton - Ringoes NJ, US
Dennis J. Bechis - Yardley PA, US
Heinz H. Busta - Plainsboro NJ, US
Zilan Shen - Lawrenceville NJ, US

International Classification:

G09G 5/00

US Classification:

345 13, 345 11, 345 39, 345 40, 345204, 345206, 345536, 345543, 348383

Abstract:

A tiled display device is formed from display tiles having picture element (pixel) positions defined up to the edge of the tiles. Each tile includes a memory which stores display data, and pixel driving circuitry which controls the scanning and illumination of the pixels on the tile. The tiles are formed in two parts, an electronics section and a display section. Each of these parts includes connecting pads which cover several pixel positions. Each connecting pad makes an electrical connection to only one row electrode or column electrode. The connecting pads on the display section are electrically connected and physically joined to corresponding connecting pads on the electronics section to form a complete tile.