US 9,810,940 B2
Polarizing plate and display apparatus
Yuichiro Kunai, Arlington, MA (US)
Assigned to SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo (JP)
Appl. No. 15/103,662
Filed by Sumitomo Chemical Company, Limited, Tokyo (JP)
PCT Filed Dec. 5, 2014, PCT No. PCT/JP2014/082194
§ 371(c)(1), (2) Date Jun. 10, 2016,
PCT Pub. No. WO2015/087790, PCT Pub. Date Jun. 18, 2015.
Claims priority of application No. 2013-257085 (JP), filed on Dec. 12, 2013.
Prior Publication US 2016/0306227 A1, Oct. 20, 2016
Int. Cl. G02F 1/1335 (2006.01); G02B 5/30 (2006.01); G02B 1/04 (2006.01); G02B 1/14 (2015.01)
CPC G02F 1/133528 (2013.01) [G02B 1/14 (2015.01); G02B 5/3033 (2013.01)] 6 Claims
OG exemplary drawing
 
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.