High-energy-efficiency LED backlight source applied to liquid crystal display
A technology of LED backlight and liquid crystal display, applied in the direction of light source, electric light source, point light source, etc., can solve the problems of poor heat dissipation of LED chips and unqualified picture quality of liquid crystal display, etc., achieve good application prospects and ensure use Longevity, easy-to-achieve effects
Active Publication Date: 2013-10-16
KUNSHAN SANJING SCI & TECH
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Problems solved by technology
[0003] The technical problem solved by the present invention is that the liquid crystal display screen using the traditional backlight will have the problem that the picture quality of the liquid crystal display screen is unqualified, and the heat dissipation of the LED chip is not good.
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[0015] The present invention will be further described below in conjunction with the accompanying drawings.
[0016] Such as figure 1 As shown, a high-energy-efficiency LED backlight for liquid crystal displays includes a rectangular strip-shaped substrate 1, the substrate 1 is made of aluminum, with a thickness of 0.5-0.6 mm, light weight, good thermal conductivity, and low cost The substrate 1 is provided with several dry LED chips 2, and the LED chips 2 distributed on the substrate 1 are divided into three sections, including a side section 201, a middle section 202, and a side-middle spacer section 203, and a side-middle spacer section 203 is the area between the side section 201 and the middle section 202, the distance between two adjacent LED chips 2 in the side section 201, the distance between two adjacent LED chips 2 in the middle section 202, and the middle space The distance between two adjacent LED chips 2 in the section 203 gradually increases, and the number of ...
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Abstract
The invention discloses a high-energy-efficiency LED backlight source applied to a liquid crystal display. The high-energy-efficiency LED backlight source comprises a rectangular stripe-shaped substrate, a plurality of LED chips are arranged on the substrate, and the LED chips distributed on the substrate are divided into three sections of a lateral portion section, a middle portion section and a lateral-middle separation portion section. The lateral-middle separation portion section is an area between the lateral portion section and the middle portion section. The distance between two adjacent LED chips in the lateral portion section, the distance between two adjacent LED chips in the middle portion section and the distance between two adjacent LED chips in the lateral-middle separation portion section gradually increase. Lenses are arranged on the LED chips, and a divergence angle of each lens is 170 degrees. The high-energy-efficiency LED backlight source can guarantee brightness uniformity of the liquid crystal display and high pass percent of image quality. Furthermore, the substrate is thin in thickness and high in radiation performance to guarantee service life of the LED chips. The high-energy-efficiency LED backlight source is simple in design, easy to achieve and good in application prospect.
Description
technical field [0001] The invention relates to the technical field of LED backlight sources, in particular to a high-energy-efficiency LED backlight source for liquid crystal display screens. Background technique [0002] The liquid crystal display is composed of a liquid crystal panel and a backlight. Because the liquid crystal panel itself does not emit light, it needs to realize transmission or reflection display through an external light source. The luminous characteristics of the backlight will directly affect the picture quality of the liquid crystal display. Traditional backlights The LED chips are generally distributed at equal intervals, resulting in uneven brightness. The brightness of the LCD screen in the middle and four corners is not enough, and the picture quality of the LCD screen will be unqualified. It is necessary to increase the number of LED chips to improve the performance of the LCD screen. Brightness, but it also increases the production cost to a ce...
Claims
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IPC IPC(8): F21S8/00F21V29/00F21V19/00G02F1/13357F21Y101/02F21V29/89
Inventor 许一青
Owner KUNSHAN SANJING SCI & TECH