LED light source apparatus and packaging method therefor, backlight module and display apparatus

• Main Authors: GONG YUNPING, LIN LI, LI DONGMING
• Format: Patent
• Language: English
• Published: 14.10.2015
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

The invention discloses an LED light source apparatus and a packaging method therefor, a backlight module and a display apparatus. The LED light source apparatus comprises a substrate, at least one LED device on the substrate, a first silica gel layer covering the surface of the at least one LED device, a first phosphor layer covering the surface of the first silica gel layer and a second silica gel layer covering the surface of the first phosphor layer, wherein the refractive index of the first silica gel layer is larger than that of the second silica gel layer. The LED light source apparatus improves the light emission efficiency. In addition, the refractive index of the first silica gel layer is arranged to be larger than that of the second silica gel layer, so that total reflection at an interface with external air is effectively reduced, and the light emission efficiency is further improved. A preparation method provided by the technical scheme of the application can produce the LED light source apparatus with high light emission efficiency. The backlight module and the display apparatus provided by the technical scheme of the application adopt the LED light source apparatus, so that the high light emission efficiency is achieved, and the display brightness is improved.