IP Library › Granted Patent US 10,126,592
Granted Patent B2
US 10,126,592 · App. 15/725,398 · Granted Nov 13, 2018

Polarizing plate and display apparatus

Inventor: Yuichiro Kunai (Arlington, MA)
Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
G02F1/133528G02B1/14G02B5/3033
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 10,126,592
App. No.
15/725,398
Granted
Nov 13, 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 (17)

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,

the polarizer having a thickness less than or equal to 7 μm,

the polarizing being stretched to a stretch ratio of more than 5,

the first protective film having a thickness 5 to 50 μm,

the second protective film having a thickness 5 to 50 μm, and

the first adhesive layer being smaller in thickness than the second adhesive layer.

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. The polarizing plate according to claim 1 , wherein a difference in thickness between the second adhesive layer and the first adhesive layer is greater than or equal to 0.3 μm.

5. 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.

6. A display apparatus comprising:

a cell for display; and

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

Priority Claims (1)
JP 2013-257085 · Dec 12, 2013 · national
Continuity (2)
Continuation 15103662
Related Publication 20180039135A1 · Feb 8, 2018
Cited By (1)
US 12,703,172