METHOD OF PRODUCING AN OPTICAL FILM, AND IMAGE DISPLAY APPARATUS USING THE OPTICAL FILM OBTAINED BY THE PRODUCTION METHOD
First Claim
1. A method of producing an optical film, comprising the steps of:
- applying an application liquid containing a liquid crystal material to a substrate subjected to alignment treatment;
forming a first optical compensation layer on a surface of the substrate by aligning the applied liquid crystal material through treatment at a temperature at which the liquid crystal material exhibits a liquid crystal phase;
transferring the first optical compensation layer formed on the surface of the substrate to a surface of a transparent protective film (T);
laminating a polarizer on the surface of the transparent protective film (T); and
forming a second optical compensation layer on a surface of the first optical compensation layer, wherein.the polarizer and the first optical compensation layer are arranged on opposite sides through the transparent protective film (T);
the first optical compensation layer is formed so that an angle formed between a slow axis of the first optical compensation layer and an absorption axis of the polarizer is +17°
to +27°
or −
17°
to −
27°
; and
the second optical compensation layer is formed so that an angle formed between a slow axis of the second optical compensation layer and the absorption axis of the polarizer is +85°
to +95°
.
1 Assignment
0 Petitions
Accused Products
Abstract
Provided is a method of producing an optical film having excellent durability and capable of contributing to reduction in thickness, preventing uneven heating, and favorably preventing light leak in black display. The method of producing an optical film includes the steps of: applying an application liquid containing a liquid crystal material to an alignment substrate; forming a first optical compensation layer on a substrate surface by aligning the liquid crystal material; transferring the first optical compensation layer to a surface of a transparent protective film; laminating a polarizer on the surface of the transparent protective film; and forming a second optical compensation layer on a surface of the first optical compensation layer. The polarizer and the first optical compensation layer are arranged on opposite sides through the transparent protective film. The first optical compensation layer and the second optical compensation layer are formed so that angles formed between respective slow axes and an absorption axis of the polarizer are set within specific ranges.
17 Citations
12 Claims
-
1. A method of producing an optical film, comprising the steps of:
-
applying an application liquid containing a liquid crystal material to a substrate subjected to alignment treatment; forming a first optical compensation layer on a surface of the substrate by aligning the applied liquid crystal material through treatment at a temperature at which the liquid crystal material exhibits a liquid crystal phase; transferring the first optical compensation layer formed on the surface of the substrate to a surface of a transparent protective film (T); laminating a polarizer on the surface of the transparent protective film (T); and forming a second optical compensation layer on a surface of the first optical compensation layer, wherein. the polarizer and the first optical compensation layer are arranged on opposite sides through the transparent protective film (T); the first optical compensation layer is formed so that an angle formed between a slow axis of the first optical compensation layer and an absorption axis of the polarizer is +17°
to +27°
or −
17°
to −
27°
; andthe second optical compensation layer is formed so that an angle formed between a slow axis of the second optical compensation layer and the absorption axis of the polarizer is +85°
to +95°
. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
Specification