CN-224232085-U - Patterned optical film

CN224232085UCN 224232085 UCN224232085 UCN 224232085UCN-224232085-U

Abstract

The utility model discloses a patterned optical film, which comprises a patterned alignment layer, a liquid crystal filling layer and a polarizing layer. The patterned alignment layer is provided with a first surface and a second surface which are opposite, the first surface is provided with a plurality of strip-shaped flat areas extending in the direction parallel to the film surface and a plurality of strip-shaped reflecting inclined surface areas extending in the direction parallel to the film surface, and each strip-shaped reflecting inclined surface area is respectively arranged between the adjacent strip-shaped flat areas. The liquid crystal filling layer is formed on the first surface of the patterned alignment layer and covers the plurality of strip-shaped flat areas of the patterned alignment layer and fills the plurality of strip-shaped reflecting inclined surface areas. The polarizing layer is arranged on one side of the liquid crystal filling layer far away from the pattern alignment layer. When the patterned optical film is used on the surface of a self-luminous electroluminescent display, the contrast of an image can be improved when the image light is displayed in a bright state, and the patterned optical film has metallic reflection luster.

Inventors

Peng Chengnong
HONG QUNTAI
SHEN JUNNAN
WU MENGJIE
GAO GUOLONG

Assignees

明基材料有限公司
明基材料股份有限公司

Dates

Publication Date: 20260512
Application Date: 20250603

Claims (12)

1. A patterned optical film, comprising: The patterning alignment layer is provided with a first surface and a second surface which are opposite, wherein the first surface is provided with a plurality of strip-shaped flat areas extending in the direction parallel to the film surface and a plurality of strip-shaped reflecting inclined surface areas extending in the direction parallel to the film surface, and each strip-shaped reflecting inclined surface area is respectively arranged between the adjacent strip-shaped flat areas; A liquid crystal filling layer formed on the first surface of the patterned alignment layer and covering the multiple strip-shaped flat regions and filling up the multiple strip-shaped reflection inclined surface regions, and The polarizing layer is arranged on one side of the liquid crystal filling layer, which is far away from the patterned alignment layer.
2. The patterned optical film of claim 1, wherein the lc fill layer has a first refractive index, the patterned alignment layer has a second refractive index, and the first refractive index is greater than the second refractive index.
3. The patterned optical film of claim 1, wherein the first refractive index is between 1.55 and 1.80 and the second refractive index is between 1.40 and 1.55.
4. The patterned optical film of claim 1, wherein the plurality of stripe-shaped reflective oblique surface regions of the patterned alignment layer are single reflective oblique surfaces or are composed of two adjacent reflective oblique surfaces.
5. The patterned optical film of claim 4, wherein the plurality of stripe-shaped reflective bevel regions are comprised of two adjacent reflective bevels that are symmetrical or asymmetrical.
6. The patterned optical film of claim 4, wherein each of the plurality of reflective oblique surfaces of the plurality of reflective oblique surface regions forms an angle θ with a normal direction perpendicular to the first surface of the patterned alignment layer, and the angle θ is between 30 ° and 60 °.
7. The patterned optical film of claim 4, wherein each of the plurality of reflective oblique surfaces of the plurality of reflective oblique surface regions has a width between 1 μm and 60 μm perpendicular projected to the second surface of the patterned alignment layer.
8. The patterned optical film of claim 1, wherein the patterned alignment layer has a height of between 0.1 μm and 30 μm and a width of between 0.01 mm and 1.0 mm.
9. The patterned optical film of claim 1, wherein the thickness of the liquid crystal fill layer overlying the plurality of planar regions of the patterned alignment layer is between 1 μm and 5 μm.
10. The patterned optical film of claim 1, wherein the plurality of stripe-shaped flat regions and the plurality of stripe-shaped reflective bevel regions of the patterned alignment layer are continuously or discontinuously distributed in the direction parallel to the film surface.
11. The patterned optical film of claim 1, wherein the lc fill layer is a positive wavelength dispersive lc fill layer, a negative wavelength dispersive lc fill layer, or a cholesteric lc fill layer.
12. The patterned optical film of claim 1, wherein the polarizing layer is one or any combination of an absorbing polarizing layer, a reflecting polarizing layer, a dyeing polarizing layer, a coating polarizing layer, and a grating polarizing layer.

Description

Patterned optical film Technical Field The present utility model relates to a patterned optical film, and more particularly, to a patterned optical film for an electroluminescent display surface, which can exhibit the effects of high contrast patterns and metallic reflective gloss formed by a variety of different reflective light intensity regions. Background With the increasing demands of people for the beauty and functionality of displays, the demands of various displays matching with the surrounding environment are increasing, for example, the vehicle-mounted display is generally black when not opened, but the interior decoration of the vehicle may have different colors and textures. Therefore, if the display picture of the vehicle-mounted display is not opened and can be consistent with the color, the texture and the luster of the surrounding interior, a better collocation effect can be achieved. The TWI816461B patent proposes a patterned optical film for a self-luminous electroluminescent display surface, which comprises a patterned alignment layer, a liquid crystal leveling layer and a polarizing layer, wherein the patterned alignment layer is provided with a plurality of strip phase difference areas which are arranged in a strip mode and have different depths, the liquid crystal leveling layer covers and levels the strip phase difference areas, the polarizing layer is arranged on one side, far away from the patterned alignment layer, of the liquid crystal leveling layer, phase differences generated by the strip phase difference areas are different, and after liquid crystal is coated, the liquid crystal leveling layer has different reflectivities for different visible light wavelengths, and forms preset pattern textures and different colors. The patterned optical film disclosed in the patent uses the patterned alignment layer with different height phase difference regions to form preset pattern textures and different colors after the liquid crystal is coated, but the color contrast of the patterned optical film prepared by the patterned optical film still cannot reach the expectations. If the color contrast is further improved, the thickness of the liquid crystal filling layer is greatly increased to increase the phase difference value, so that the processability is poor and the cost of the liquid crystal material is increased. In addition, the surface of the vehicle-mounted display has obvious drop in gloss compared with the interior of a metal plaque, and is difficult to be consistent. If the metal sputtering film is directly attached to the surface of the vehicle-mounted display, the display image light is greatly blocked and reduced. Disclosure of utility model The utility model aims to provide a patterned optical film for a self-luminous electroluminescent display surface, which can improve image contrast and has metallic reflection luster when displaying image light in a bright state. In order to achieve the above-mentioned objective, the present utility model provides a patterned optical film, which comprises a patterned alignment layer, a liquid crystal filling layer and a polarizing layer, wherein the patterned alignment layer has a first surface and a second surface opposite to each other, the first surface has a plurality of stripe-shaped flat regions extending in a direction parallel to a film surface, and a plurality of stripe-shaped reflective inclined regions extending in a direction parallel to the film surface, each stripe-shaped reflective inclined region is respectively disposed between adjacent stripe-shaped flat regions, the liquid crystal filling layer is formed on the first surface of the patterned alignment layer and covers the plurality of stripe-shaped flat regions and fills the plurality of stripe-shaped reflective inclined regions of the patterned alignment layer, and the polarizing layer is disposed on a side of the liquid crystal filling layer away from the patterned alignment layer. In the patterned optical film of the present utility model, the liquid crystal filling layer has a first refractive index, the patterned alignment layer has a second refractive index, and the first refractive index is greater than the second refractive index. In the patterned optical film of the present utility model, the first refractive index is between 1.55 and 1.80, and the second refractive index is between 1.40 and 1.55. In the patterned optical film of the present utility model, the heights of the plurality of stripe-shaped flat regions of the patterned alignment layer are between 0.1 μm and 30 μm, and the widths of the plurality of stripe-shaped flat regions are between 0.01mm and 1.0 mm. In the patterned optical film of the present utility model, a width of each reflection inclined plane of the plurality of strip-shaped reflection inclined plane regions perpendicularly projected to the second surface of the patterned alignment layer is between 1 μm and 60 μm. In the patterned optical