IP Library Granted Patent US 7,745,340
Granted Patent B2
US 7,745,340 · App. 11/169,154 · Granted Jun 29, 2010

Method of clearing electrical contact pads in thin film sealed OLED devices

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Quick Facts
Patent No.
US 7,745,340
App. No.
11/169,154
Granted
Jun 29, 2010
Kind
B2
Abstract

A process of cleaning wire bond pads associated with OLED devices, including the steps of depositing on the wire bond pads one or more layers of ablatable material, and ablating the one or more layers with a laser, thereby exposing a clean wire bond pad.

Claims (1)

1. A process of cleaning wire bond pads associated with OLED devices formed on a substrate using a shadow mask wherein the shadow mask has openings adapted to align with the active matrix display region and the wire bond pad region, the method comprising the steps of (a) depositing a conductive layer on a substrate; (b) placing the shadow mask over the conductive layer; (c) depositing an organic material layer on the conductive layer through the openings in the shadow mask to form an OLED pattern on the conductive layer in the active matrix display region and cover the wire bond pad region; (d) removing the shadow mask; forming a thin film encapsulation layer over substantially the entire surface of the wafer; and applying a laser beam to the wire bond pad region of the wafer so as to remove the organic material and all layers above same to expose the wire bond pads.

Assignments (6)
RELEASE OF SECURITY INTEREST Recorded Jul 25, 2014
From: ALEXANDRA GLOBAL MASTER FUND LTD.
To: EMAGIN CORPORATION
Reel/Frame 033417/0309 →
RELEASE OF SECURITY INTEREST Recorded Oct 20, 2010
From: MORIAH CAPITAL, L.P.
To: EMAGIN CORPORATION
Reel/Frame 025169/0107 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 17, 2010
From: JI, HUA XIA
To: EMAGIN CORPORATION
Reel/Frame 024398/0054 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 10, 2010
From: GHOSH, AMALKUMAR P.; LIU, YACHIN
To: EMAGIN CORPORATION
Reel/Frame 024361/0491 →
SECURITY AGREEMENT Recorded Nov 13, 2007
From: EMAGIN CORPORATION
To: MORIAH CAPITAL, L.P.
Reel/Frame 020098/0610 →
SECURITY AGREEMENT Recorded Jul 25, 2006
From: EMAGIN CORPORATION
To: ALEXANDRA GLOBAL MASTER FUND LTD.
Reel/Frame 017982/0743 →