US 10,707,435 B2Granted

Method and apparatus for coupling light-emitting elements with light-converting material

AssigneeQuarkstar LLC

InventorsIngo Speier, Robert C. Gardner, Louis Lerman, Christopher H. Lowery, Allan Brent York

Life of this patent

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Abstract

Light-emitting elements such as LEDs are associated with light-converting material such as phosphor and/or other material. A donor substrate comprising the light-converting and/or other material is suitably placed relative to a target substrate associated with the light-emitting elements. A laser or other energy source is then used to transfer the light-converting and/or other material in a pattern via writing or masking from the donor substrate to the target substrate in accordance with the pattern. Addressability and targetability of the transfer process facilitates precise patterning of the target substrate.

Claims7

Dependent claims

An article comprising:

a layer of light-converting material, the layer having an input surface for receiving input light from a light source that has a source perimeter, the layer of light-converting material extending laterally beyond the source perimeter, the light-converting material in the layer being arranged in a pattern and configured to output light of a different chromaticity than the input light,
wherein the pattern comprises multiple discrete features, each discrete feature extending beyond the source perimeter, the discrete features of the pattern being sized and shaped so that a proportion of the light source encompassed by the source perimeter that overlaps with the discrete features is insensitive to a lateral placement of the pattern with respect to the source perimeter.

Dependencies are inferred from the claim text.

Facts

Application: 14/714,096Filed 15 May 2015 · continuation
Priority: 8 Aug 2011
Published: US 2015/0333234 A119 Nov 2015
Granted: 7 Jul 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

H10K 50/125
Characterised by the electroluminescent [EL] layers: specially adapted for multicolour light emission, e.g. for emitting white light
H10H 20/851
Packages: wavelength conversion means
H10K 71/18
Deposition of organic active material: using non-liquid printing techniques, e.g. thermal transfer printing from a donor sheet
H10P 74/20
Testing or measuring during manufacture or treatment of wafers, substrates or devices: characterised by the properties tested or measured, e.g.…

Family

Application13/205,572Parent of this continuation · filed 8 Aug 2011
Application13/436,166Parent of this continuation · filed 30 Mar 2012
US 2015/0333234 A1Pre-grant publication · published 19 Nov 2015
US 9,034,674 B2Parent of this continuation
US 2013/0037838 A1Published application
US 10,707,435 B2This patent

From the US filing history. Foreign family members aren’t listed.