Polarizer stack
Assignee3M Innovative Properties Company
InventorsCarl A. STOVER, Kristopher J. DERKS
Life of this patent
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Abstract
A polarizer stack including an absorbing polarizer and a multilayer polymeric reflective polarizer bonded together is described. The absorbing polarizer has a first block axis and the reflective polarizer has a second block axis substantially parallel to the first block axis. The reflective polarizer has a shrinkage in a range of 0.4 percent to 3 percent along the second block axis when the reflective polarizer is heated at 95° C. for 40 minutes.
Claims21
A polarizer stack comprising an absorbing polarizer having a first block axis and a multilayer polymeric reflective polarizer having a second block axis substantially parallel to the first block axis, the absorbing polarizer and the reflective polarizer bonded together,
- wherein the reflective polarizer, prior to being bonded to the absorbing polarizer, has a shrinkage in a range of 0.4 percent to 3 percent along the second block axis when the reflective polarizer is heated at 95° C. for 40 minutes.
Dependencies are inferred from the claim text.