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US 2023/0100624 A1Published application
Optical film having excellent restoring force after folding and display device including same
AssigneeKolon Industries, Inc.
InventorsHak-Gee JUNG, Sang-Hyun AHN, Hyora SHIN
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Abstract
The present disclosure provides an optical film and a display device including the optical film, the optical film comprising a light-transmissive substrate and a buffer layer, wherein a first folded mark parameter calculated by equation 1 ranges from 0.7 to 7.0.
Claims15
An optical film comprising:
- a light-transmitting substrate;
- and
- a buffer layer,
- the optical film having a first folding mark parameter calculated by the following Equation 1, of 0.7 to 7.0:
- First folding mark parameter=[{(thickness of buffer layer×2.0×refractive index of buffer layer)/(thickness of light-transmitting substrate×refractive index of light-transmitting substrate)}+modulus of optical film]×Δn×1.5 [Equation 1]
- wherein Δn represents “refractive index of the light-transmitting substrate—refractive index of the buffer layer”.
3 more elements
Dependencies are inferred from the claim text.