Display device and backlight module thereof

A technology of backlight module and LED light bar, which is applied in the direction of lighting devices, fixed lighting devices, lighting device components, etc., can solve the problems of high cost and complicated circuit layout, and achieve low cost, uniform light output, and reduced quantity. Effect

Active Publication Date: 2015-12-16
SHENZHEN MTC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional backlight module is usually realized by adjusting the brightness of the LED lamp beads, that is, when the LED lamp beads are evenly arranged, a corresponding dimming circuit is additionally configured to make the brightness value of the LED lamp beads in the middle be greater than that of the side ends. The luminance value of the LED lamp beads, because a special dimming circuit needs to be configured, the circuit layout is complicated and the cost is high.

Method used

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  • Display device and backlight module thereof
  • Display device and backlight module thereof
  • Display device and backlight module thereof

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Embodiment Construction

[0024] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0025] Such as Figure 1~Figure 6 As shown, the embodiment of the present invention provides a backlight module and a display device provided with the backlight module.

[0026] Please refer to figure 1 , figure 2 , the backlight module includes a base 10 and a plurality of LED light bars 20 evenly arranged in the base 10 .

[0027] The base 10 is composed of a bottom plate 11 and four side plates 12, the side plates 12 are inclined outwards and form an obtuse angle with the bottom plate 11, which is used to accommodate and fix the LED light bar 20 and the The light emitted by the LED light bar 20 is reflected upwards to form a backlight of the display device. As a preferred embod...

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Abstract

The embodiment of the invention discloses a backlight module which comprises a base and a plurality of LED (Light Emitting Diode) lamp strips, wherein the LED lamp strips are uniformly arranged on the base and comprise a circuit and a plurality of LED lamp beads arranged on the circuit board; the quantity of the LED lamp beads on each LED lamp strip is identical; the spaces among various LED lamp beads on the same LED lamp strip are identical; the spaces between the LED lamp beads on any two adjacent LED lamp strips are different; and in addition, the density of the LED lamp beads at two side ends of the backlight module is smaller than that of the middle LED lamp bead. According to the backlight module disclosed by the embodiment of the invention, the uniform staggered arrangement of the LED lamp beads is realized by arranging a plurality of LED lamp strips provided with the LED lamp beads with different spaces in a parallel and staggered manner; and meanwhile, a plurality of pyramid structures are arranged on a reflecting surface of a lens, so that multiple reflection / refraction of light is realized. The backlight module has the advantages of simple structure, stable performance and low cost; and in addition, the integral illumination and uniformity are effectively improved.

Description

technical field [0001] The invention relates to the technical field of electronic display, in particular to a display device and a backlight module thereof. Background technique [0002] Liquid Crystal Display (LCD for short) needs to use a backlight module as a light source because it does not emit light by itself. Existing backlight modules can generally be classified into two types: edge-type backlight modules and direct-type backlight modules. [0003] Existing direct-lit backlight modules generally consist of a number of LED lamp beads arranged in an array to form a light source. For example, a 32-inch LCD monitor needs to use more than 500 LED lamp beads, while a small-sized LCD monitor uses more than 500 LED lamp beads. At least 36 or more, such a large number of LED lamp beads need to be connected in series and parallel, the control circuit is complicated, the production cost is expensive, and the utilization rate of luminous flux is low, and the heat is serious; D...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357F21S8/00F21V19/00F21V5/04F21Y101/02
Inventor 何胜斌
Owner SHENZHEN MTC
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