US 11,991,900 B2
Organic light emitting diode display
Wei-Feng Xu, Taoyuan (TW); Cyun-Tai Hong, Taoyuan (TW); and Chen-Kuan Kuo, Taoyuan (TW)
Assigned to BenQ Materials Corporation, Taoyuan (TW)
Filed by BenQ Materials Corporation, Taoyuan (TW)
Filed on May 19, 2021, as Appl. No. 17/324,152.
Application 17/324,152 is a continuation in part of application No. 16/558,186, filed on Sep. 2, 2019, abandoned.
Prior Publication US 2021/0273204 A1, Sep. 2, 2021
Int. Cl. G02F 1/295 (2006.01); G02B 5/18 (2006.01); G02B 5/30 (2006.01); G02B 6/26 (2006.01); G02B 6/34 (2006.01); G02B 6/42 (2006.01); G02F 1/29 (2006.01); H10K 50/86 (2023.01)
CPC H10K 50/86 (2023.02) [G02B 5/1814 (2013.01); G02B 5/1866 (2013.01); G02B 5/3083 (2013.01); G02B 5/3025 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An organic light emitting diode display comprising:
an organic light emitting diode panel;
a quarter-wavelength retarder disposed on the organic light emitting diode panel;
a polarizer disposed on the quarter-wavelength retarder; and
a diffraction grating film disposed on the polarizer comprising a substrate and a first diffraction grating layer formed on the substrate, wherein the first diffraction grating layer includes a plurality of first gratings aligned with a first direction, and the retardation of the first diffraction grating layer is in a range of 0.68 rad to 2.9 rad.