Electronic device display with damage-resistant polarizer

摘要

A display polarizer may have a polymer layer such as a polyvinyl alcohol layer coated with a dichroic dye such as iodine. A polymer layer such as a tri-acetyl cellulose layer may be formed on the polyvinyl alcohol layer so that the iodine is interposed between the polyvinyl alcohol layer and the tri-acetyl cellulose layer. To provide protection for the iodine layer, an additional polymer layer such as an additional tri-acetyl cellulose layer and a layer of adhesive may be formed on top of the polymer layer. A functional layer such as an antireflection layer may form an outermost layer in the polarizer. Compensation films may be formed beneath the polyvinyl alcohol layer. Additional display layers such as a lower polarizer layer and interposed layers such as a thin-film transistor layer, liquid crystal layer, and color filter layer may be formed below the compensation films.

主权项

1. A polarizer, comprising:
a first polymer layer, wherein the first polymer layer comprises a polyvinyl alcohol layer; a dichroic dye on the first polymer layer; a second polymer layer, wherein the second polymer layer comprises a tri-acetyl cellulose layer, and wherein the dichroic dye is interposed between the first and second polymer layers; a pressure sensitive adhesive layer on the second polymer layer, wherein the pressure sensitive adhesive layer has a thickness of 5-40 microns; a third polymer layer on the pressure sensitive adhesive layer, wherein the third polymer layer comprises a tri-acetyl cellulose, wherein the second polymer layer has a thickness of 20-80 microns and wherein the third polymer layer has a thickness of 20-80 microns; and an outermost layer on the third polymer layer.