Optical film, manufacturing method, and application thereof

A manufacturing method for an optical film, comprising steps of:

• providing a first carrier substrate and a second carrier substrate, forming a first electrode on the first carrier substrate to obtain a first electrode layer, and forming a forming a second electrode on the second carrier substrate to obtain a second electrode layer;
• forming an isotropic optical material layer on the first electrode layer;
• forming a plurality of groove structures in the isotropic optical material layer;
• injecting liquid crystal material into each of the groove structures;
• and
• fixing the first electrode layer and the second electrode layer on opposite sides to encapsulate the liquid crystal material, such that a liquid crystal material layer is formed and the optical film is constructed;
• wherein a section of each of the groove structures in a vertical bottom-up direction is an irregular shape having a left half and a right half being symmetrical to each other, and a width of the section of each of the groove structures decreases gradually;
• and
• wherein the section of each of the groove structures includes a first isosceles trapezoid, a second isosceles trapezoid, and a third isosceles trapezoid in the vertical bottom-up direction, wherein a base angle of the second isosceles trapezoid is greater than a base angle of the third isosceles trapezoidal surface, and the base angle of the third isosceles trapezoidal surface is greater than a base angle of the first isosceles trapezoid.

A display panel, comprising:

• an optical film disposed on a light emitting surface of the display panel;
• wherein the optical film comprises a first electrode layer, an isotropic optical material layer, a liquid crystal material layer, and a second electrode layer that are sequentially stacked;
• wherein a plurality of groove structures are disposed in the isotropic optical material layer, and each of the groove structures is filled with the liquid crystal material layer;
• wherein an ordinary refractive index of the liquid crystal material layer is less than an ordinary refractive index of the isotropic optical material layer, while an extraordinary refractive index of the liquid crystal material layer is equal to an extraordinary refractive index of the isotropic optical material layer;
• wherein a section of each of the groove structures in a vertical bottom-up direction is an irregular shape having a left half and a right half being symmetrical to each other, and a width of the section of each of the groove structures decreases gradually;
• and
• wherein the section of each of the groove structures includes a first isosceles trapezoid, a second isosceles trapezoid, and a third isosceles trapezoid in the vertical bottom-up direction, wherein a base angle of the second isosceles trapezoid is greater than a base angle of the third isosceles trapezoidal surface, and the base angle of the third isosceles trapezoidal surface is greater than a base angle of the first isosceles trapezoid.