Optical film
First Claim
1. An optical film comprising:
- a light directing structure layer comprising a plurality of light directing micro structures, wherein the ratios of height to width of the light directing micro structures are in the range of 1.5 to 6, and the light directing structure layer further comprising a dye including at least dye molecules or light-absorbing particles for absorbing light with a specific wavelength;
a first filling layer disposed on the light directing micro structures and covering the light directing micro structures, wherein the refractive index of the first filling layer and the light directing structure layer are different;
a plurality of first diffraction gratings along with first direction formed on the first filling layer; and
a second filling layer disposed on the first gratings, wherein the refractive index of the second filling layer and the first diffraction gratings are different.
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Accused Products
Abstract
The invention provides an optical film for improving image quality of a liquid crystal display comprising: a light directing structure layer, a first filling layer, a plurality of first diffraction gratings and a second filling layer. The light directing structure layer comprises a plurality of light directing micro structures, wherein the ratio of height to width of each light directing micro structure is in the range of 1.5 to 6. The first filling layer is disposed on the light directing structure layer, and the refractive index of the first filling layer and the light directing structure layer are different. The first diffraction gratings along with a first direction are formed on the first filling layer. The second filling layer is disposed on the first diffraction gratings and the refractive index of the second filling layer and the first diffraction gratings are different.
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Citations
18 Claims
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1. An optical film comprising:
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a light directing structure layer comprising a plurality of light directing micro structures, wherein the ratios of height to width of the light directing micro structures are in the range of 1.5 to 6, and the light directing structure layer further comprising a dye including at least dye molecules or light-absorbing particles for absorbing light with a specific wavelength; a first filling layer disposed on the light directing micro structures and covering the light directing micro structures, wherein the refractive index of the first filling layer and the light directing structure layer are different; a plurality of first diffraction gratings along with first direction formed on the first filling layer; and a second filling layer disposed on the first gratings, wherein the refractive index of the second filling layer and the first diffraction gratings are different. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification