OPTICAL FILM, OPTICAL FILM SET, BACKLIGHT MODULE, AND DISPLAY DEVICE

• Main Authors: WU, Chun-Yi, CHEN, Wei-Hsuan, TAI, Chung-Yung
• Format: Patent
• Language: Chinese; English; French
• Published: 29.06.2023
• 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

An optical film (100), an optical film set (600), a backlight module (200), and a display device (900). The optical film (100) comprises a body (110), a plurality of first prism structures (120), and a plurality of second prism structures (130). The body (110) is provided with a first optical surface (111) and a second optical surface (112) opposite to each other. The first prism structures (120) are disposed on the first optical surface (111). Each first prism structure (120) has a first extension direction (D1). The second prism structures (130) are disposed on the second optical surface (112). Each second prism structure (130) has a second extension direction (D2). The first extension direction (D1) is different from the second extension direction (D2) so as to increase the viewing angle. L'invention concerne un film optique (100), un ensemble de films optiques (600), un module de rétroéclairage (200) et un dispositif d'affichage (900). Le film optique (100) comprend un corps (110), une pluralité de premiè