Staggered light bar for eliminating firefly phenomenon and backlight module thereof

• Main Authors: YE YUN, LIU KUANHUANG, QIU YINGYI, CHEN PEIHUI, LIN JIANPU
• Format: Patent
• Language: Chinese; English
• Published: 21.06.2024
• 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

The invention relates to a staggered light bar for eliminating a firefly phenomenon and a backlight module thereof. The backlight module sequentially comprises a first light bar, a second light bar, a substrate, a reflection sheet, a light guide plate, a diffusion sheet, a brightness enhancement sheet, a module edge covering layer, a heat dissipation metal plate, an edge covering shading film, a hollow triangular heat dissipation area and a light propagation cavity. The first lamp strip and the second lamp strip are designed in a staggered mode, the first lamp strip and the second lamp strip are each provided with a right-angle triangular reflecting table, the direct-emitting LED range just falls on the right-angle triangular reflecting tables, then through the angle design of the reflecting right-angle triangular tables and the light propagation cavity, light is reflected to the light incident side of the light guide plate, and finally the firefly phenomenon is eliminated. According to the backlight module,