Light source device adapted to a direct-type backlight module and display device therewith

Abstract

A light source device (38) includes a frame (40), at least one light emitting chip (42), a light transferring layer (54) and a lens layer (56). The at least one light emitting chip (42) is present within the frame (40) for emitting light. The light transferring layer (54) covers the at least one light emitting chip (42) and combines with the frame (40). The lens layer (56) is formed on the frame (40) and contacts and combines with the light transferring layer (54), such that the light emitted from the at least one light emitting chip (42) directly projects into the lens layer (56) after passing through the light transferring layer (54). The lens layer (56) has a light emitting surface (58) on the other face to the light transferring layer (54) for transferring the light emitted from the at least one light emitting chip (42) into a light shape after passing through the light transferring layer (54) and the lens layer (56).

Description

technical field [0001] The invention relates to a light source device and a display thereof, in particular to a light source device and a display thereof which have a large light output angle and can improve heat dissipation efficiency. Background technique [0002] Generally speaking, the main function of the backlight module of a liquid crystal display (LCD) panel is to provide a light source with sufficient brightness and uniform distribution for the LCD panel, so that the LCD panel can display images normally. Recently, due to the advantages of light emitting diodes (Light Emitting Diode, LED) with low energy consumption, long life and no need for warm-up time, etc., the backlight module equipped with light emitting diodes has gradually become a new light source for LCD panels, and the backlight module can be used according to The position of the light-emitting diode is divided into direct-type (direct-type) and edge-type (edge-type) two designs, of which the direct-type...

AI Technical Summary

Problems solved by technology

[0003] However, the above method of reducing the number of LEDs will reduce the light source density projected on the LCD panel, so that the LCD panel cannot obtain uniform brightness with the above-mentioned small number of LEDs. The light emitting angle of the diode is used to increase the projection area of ​​a single light-emitting diode on the LCD panel, which can improve the uniformity of light received by the LCD panel

In addition, the above-mentioned way of reducing the number of light-emitting diodes will reduce the light intensity projected on the liquid crystal display panel, so that the liquid crystal display panel cannot obtain sufficient brightness with the above-mentioned small number of light-emitting diodes. The driving current of the light-emitting diode is used to increase the luminous flux of a single light-emitting diode, but the above-mentioned method of increasing the driving current of the light-emitting diode will generate more heat and increase the operating temperature of the light-emitting diode, thereby reducing the life of the components of the light-emitting diode

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