| abstract |
In the present invention, a crystalline polymer piezoelectric layer containing an optically active helix chiral polymer (A) having a weight average molecular weight of 50,000 to 1,000,000, an optical compensating layer satisfying the following formula (1), a display with a linear polarizer Device is provided. (Formula 1): | 0.06 占 Xc 占 MORc 占 d + Rth |? 500 In the formula (1), Xc represents the crystallinity (%) of the crystalline polymer piezoelectric layer obtained by the DSC method, and MORc represents the reference thickness of the crystalline polymer piezoelectric layer measured by the microwave transmission type molecular alignment meter D represents the thickness (占 퐉) of the crystalline polymer piezoelectric layer; Rth represents the retardation (nm) in the thickness direction of the optical compensation layer at a wavelength of 550 nm; box] |