Dual color guest-host polarizers and devices containing guest-host polarizers
Assignee3M Innovative Properties Company
InventorsHassan Sahouani, Kim Marie Vogel, Martin B. Wolk
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Abstract
A guest-host polarizer is disclosed that includes a host matrix, one or more first guest dyes disposed in the host matrix and oriented to absorb a first portion of visible light having a first polarization state, and one or more second guest dyes disposed in the host matrix and oriented to absorb a second portion of visible light having a second polarization state orthogonal to the first polarization state. Such guest-host polarizers can be used in various optical applications and display constructions.
Claims28
A guest-host polarizer comprising:
- a host matrix;
- one or more first guest dyes disposed in the host matrix and oriented to absorb a first portion of visible light having a first polarization state;
- and
- one or more second guest dyes disposed in the host matrix and oriented to absorb a second portion of visible light having a second polarization state orthogonal to the first polarization state.
A method for imagewise placement of polarizing elements comprising the steps of:
- a) providing a donor element that includes a base sheet, a transfer layer, and a light-to-heat conversion layer disposed between the base sheet and the transfer layer, the transfer layer comprising a guest-host polarizer;
- b) placing the transfer layer of the donor element in contact with a receptor substrate;
- c) transferring portions of the transfer layer from the donor element to selected areas of the receptor substrate by exposing selected areas of the donor element to imaging radiation;
- and
- d) removing the donor element from the receptor substrate.
A color liquid crystal display comprising a liquid crystal material disposed between two parallel display panel substrates, at least one of the display panel substrates having an array of color filters disposed thereon, at least one of the color filters comprising a guest-host polarizer that includes a host matrix, one or more first guest dyes disposed in the host matrix and oriented to absorb a first portion of visible light having the first polarization state, and one or more second guest dyes disposed in the host matrix and oriented to absorb a second portion of visible light having the second polarization state orthogonal to the first polarization state.
Dependencies are inferred from the claim text.