Light field control film group and visual angle variable display device

• Main Author: YAO BAIHONG
• Format: Patent
• Language: Chinese; English
• Published: 25.01.2022
• Subjects: DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

A light field control film group comprises a first optical film and liquid crystal molecules. The first optical film comprises a first transparent base material and light field control microstructures, the first transparent base material is provided with a first light incident side and a first light emitting side, the light field control microstructures are arranged on the first light emitting side, each light field control microstructure is provided with two side faces facing opposite directions, one of the two side faces is provided with an optical layer, and the optical layer comprises a light absorption layer, a light reflection layer and/or a light diffusion layer. The liquid crystal molecules are arranged in the light field control microstructures. A display device with a variable visual angle comprises the light field control film group. When the light field control film group and the visual angle variable display device are applied to a vehicle-mounted display system, the driving safety can be improve