IP Library › Granted Patent US 9,857,625
Granted Patent B2
US 9,857,625 · App. 15/103,662 · Granted Jan 2, 2018

Polarizing plate and display apparatus

Inventor: Yuichiro Kunai (Arlington, MA)
Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
G02F1/133528G02B1/14G02B5/3033
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Quick Facts
Patent No.
US 9,857,625
App. No.
15/103,662
Granted
Jan 2, 2018
Kind
B2
Abstract

A polarizing plate and a display apparatus including the polarizing plate are provided. The polarizing plate includes a polarizer, a first protective film disposed on one surface of the polarizer with a first adhesive layer having a thickness less than 2.0 μm being interposed, and a second protective film disposed on the other surface with a second adhesive layer having a thickness less than or equal to 2.0 μm being interposed, the second protective film being a protective film to be arranged on a side of a cell for display relative to the first protective film in arrangement of the polarizing plate on the cell for display, and the first adhesive layer being smaller in thickness than the second adhesive layer.

Claims (13)

1. A polarizing plate comprising:

a polarizer having a first surface and an opposing second surface;

a first protective film disposed on the first surface of the polarizer with a first adhesive layer having a thickness less than 2.0 μm being interposed; and

a second protective film disposed on the second surface of the polarizer with a second adhesive layer having a thickness less than or equal to 2.0 μm being interposed,

the second protective film being a protective film to be arranged on a side of a cell for display relative to the first protective film in arrangement of the polarizing plate on the cell for display, and

the first adhesive layer being smaller in thickness than the second adhesive layer and a difference in thickness between the second adhesive layer and the first adhesive layer being greater than or equal to 0.3 μm.

2. The polarizing plate according to claim 1 , wherein the first and second adhesive layers are each a layer of a cured product of a photo-curable adhesive.

3. The polarizing plate according to claim 1 , wherein the first adhesive layer has a thickness less than or equal to 0.7 μm.

4. A display apparatus comprising:

the cell for display; and

the polarizing plate according to claim 1 arranged on at least one surface of the cell for display.

5. The polarizing plate according to claim 1 , wherein the polarizer has a thickness less than or equal to 10 μm.

6. The polarizing plate according to claim 1 , the polarizing plate further comprising a pressure-sensitive adhesive layer for bonding to the cell for display, wherein the second protective film comprises an outer surface and the pressure-sensitive adhesive layer is laminated on the outer surface of the second protective film.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 28, 2016
From: KUNAI, YUICHIRO
To: SUMITOMO CHEMICAL COMPANY, LIMITED
Reel/Frame 039031/0468 →
Priority Claims (1)
JP 2013-257085 · Dec 12, 2013 · national
Continuity (1)
Related Publication 20160306227A1 · Oct 20, 2016