IP Library › Granted Patent US 7,180,238
Granted Patent B2
US 7,180,238 · App. 10/820,592 · Granted Feb 20, 2007

Oled microcavity subpixels and color filter elements

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Quick Facts
Patent No.
US 7,180,238
App. No.
10/820,592
Granted
Feb 20, 2007
Kind
B2
Abstract

An OLED device includes at least one light emitting layer arranged to produce light in a predetermined emitting area, a reflector and a semi-transparent reflector forming a microcavity structure for resonating the light produced in the at least one light emitting layer, and a color filter element disposed relative to a first portion of the predetermined emitting area so as to filter the light produced by the at least one light emitting layer and transmit substantially unfiltered light through a second portion of the predetermined emitting area.

Claims (10)

1. An OLED device formed on a substrate, comprising:

a) at least one light emitting layer arranged to produce light having a portion that is normal to the substrate in a predetermined emitting area;

b) a reflector and a semi-transparent reflector forming a microcavity structure for resonating the light produced in the at least one light emitting layer to provide red, green or blue light normal to the substrate; and

c) a color filter element disposed relative to a first portion of the semi-transparent reflector so as to filter the normal red, green or blue resonated light that passes through the color filtered element and the semi-transparent reflector and not covering a second portion of the semi-transparent reflector so that unfiltered normal red, green or blue normal light that passes through the second portion.

2. The OLED device of claim 1 where the reflector, the semi-transparent reflector, or both, also serve as electrodes for the light emitting layer.

3. The OLED device of claim 1 where the semi-transparent reflector is Ag or an alloy containing Ag.

4. The OLED device of claim 1 where the device is top emitting.

5. The OLED device of claim 1 where the device is bottom emitting.

6. The OLED device of claim 1 wherein the color filter element includes spaced striped filtered portions.

7. The OLED device of claim 1 wherein the color filter element includes openings in the color filter element to provide the unfiltered normal light.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 26, 2010
From: EASTMAN KODAK COMPANY
To: GLOBAL OLED TECHNOLOGY LLC
Reel/Frame 023998/0368 →