Patent ID: 11892725
Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 9:
10. A display panel, comprising a first substrate and a second substrate opposite to each other, sub-pixels with multiple colors disposed on a side of the first substrate close to the second substrate, a protective layer disposed on a side of the sub-pixels close to the second substrate, upper polarizing units with various subwavelength nano-grating structures, and lower polarizing units with various subwavelength nano-grating structures;
wherein the upper polarizing units with the various subwavelength nano-grating structures are different in at least one of a grating period, a grating duty ratio, and a grating height;
the upper polarizing units with the various subwavelength nano-grating structures are disposed in one-to-one correspondence with the sub-pixels with the multiple colors to increase transmittance of transmitted light of each color through the upper polarizing units corresponding to the sub-pixels whose color is the same as the color of the upper polarizing units;
the lower polarizing units with the various subwavelength nano-grating structures are disposed in one-to-one correspondence with the sub-pixels with the multiple colors, the lower polarizing units and corresponding upper polarizing units have a same structure, transmission axes of the upper polarizing units and the lower polarizing units are perpendicular to each other, and the lower polarizing units are disposed on a side of the upper polarizing units away from the sub-pixels; and
the upper polarizing units are disposed on a side of the protective layer close to the second substrate, and the lower polarizing units are disposed on a side of the second substrate away from the first substrate.