IP Library Granted Patent US 11,493,805
Granted Patent B2
US 11,493,805 · App. 16/874,358 · Granted Nov 8, 2022

Quantum dot film with sealed microcells

Inventor: Chet Steinhagen (San Jose, CA)
Assignee: E INK CALIFORNIA, LLC
G02F1/133617B32B3/12B32B27/08C09K11/025C09K11/08G02F1/133514G02F1/157G02F1/167B32B2457/202B82Y20/00B82Y40/00
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Quick Facts
Patent No.
US 11,493,805
App. No.
16/874,358
Granted
Nov 8, 2022
Kind
B2
Abstract

A quantum dot film includes a plurality of sealed microcells. The microcells may be formed within a layer of polymeric material and sealed with a sealing material. Also, the microcells may contain a dispersion of a solvent and a plurality of quantum dots. A method of making a quantum dot film includes providing a layer of polymeric material having a plurality of open microcells, filling the plurality of open microcells with a dispersion of a solvent and plurality of quantum dots, and sealing the microcells.

Claims (5)

1. A method of making a quantum dot film comprising:

providing a layer of polymeric material having a plurality of open microcells;

filling the plurality of open microcells with a dispersion comprising a solvent, a plurality of quantum dots, and a curable compound; and

sealing the microcells by curing the curable compound to form a sealing layer to contain the solvent and the plurality of quantum dots within the sealed microcells.

2. The method of claim 1 , wherein the providing step comprises embossing the plurality of open microcells into the layer of polymeric material.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 5, 2023
From: E INK CALIFORNIA, LLC
To: E INK CORPORATION
Reel/Frame 065154/0965 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 28, 2020
From: STEINHAGEN, CHET
To: E INK CALIFORNIA, LLC
Reel/Frame 052779/0087 →