Front-light module and display device

• Main Authors: CHENG, WEI-HSUAN, LIN, YEN-HAO, TSAO, LIANG-KUO, LIN, CHUNGNG, YANG, WEN-PIN
• Format: Patent
• Language: Chinese; English
• Published: 11.11.2023
• 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

A front-light module includes a light guide plate, a light source, a transparent cover plate, an optical clear adhesive (OCA) and multiple micro-features. The light exit surface of the light guide plate is provided with multiple concave micro dots. The OCA in the form of a plane is disposed between the light exit surface of the light guide plate and the cover plate to adhere the light guide plate and the cover plate. The micro-feature structure is disposed between the light exit surface of the light guide plate and the cover plate. Two adjacent micro-feature structures are space by a constant interval, two ends of each micro-feature structure define a height difference relative to the light exit surface, and each micro-feature structure is embedded in the OCA to form an air gap at least inside the micro-dot.