Direct type backlight module and liquid crystal display
A backlight module and direct-type technology, which is applied in the fields of instruments, optics, nonlinear optics, etc., can solve the problem of not being able to meet the uniformity of brightness
Inactive Publication Date: 2019-01-01
HISENSE VISUAL TECH CO LTD
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Problems solved by technology
[0007] Embodiments of the present invention provide a direct-lit backlight module and a liquid crystal display to solve the problem that the technical solutions in the prior art cannot meet the requirements of brightness uniformity
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Embodiment Construction
[0033] In the embodiment of the present invention, the direct type backlight module includes: a backplane and a backlight light source arranged on the backplane, the backlight light sources are arranged in a matrix, and the backlight light sources include: a first backlight light source located The top angle position; the second backlight light source is located at a position other than the top angle position of the matrix backlight light source, and the direct type backlight module also includes: a first lens, and the first lens is arranged above the first backlight light source ; The second lens, the second lens is arranged above the second backlight light source; wherein, the divergence angle of the first lens is greater than the divergence angle of the second lens. With the direct type backlight module provided by the embodiment of the present invention, since the divergence angle of the first lens is larger than that of the second lens, the first lens can form a larger li...
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The invention discloses a direct type backlight module and a liquid crystal display. The direct type backlight module comprises a back plate and backlight sources arranged on the back plate, wherein the backlight sources are arranged in a matrix manner; the backlight sources include first backlight sources and second backlight sources; the first backlight sources are located in the vertex angle positions of a matrix type backlight source; the second backlight sources are located in the positions except the vertex angle positions of the matrix type backlight source; the direct type backlight module further comprises first lenses arranged above the first backlight sources, and second lenses arranged above the second backlight sources; and a divergence angle of each first lens is larger thana divergence angle of each second lens. The direct type backlight module is adopted, so that the phenomenon that the overall light emitting of the backlight module cannot meet the requirement of brightness uniformity in the prior art is improved.
Description
[0001] This application is a divisional application of the Chinese invention patent application 201410636449.7 filed on November 12, 2014 with the title of "a direct type backlight module and liquid crystal display". technical field [0002] The invention relates to the technical field of liquid crystal displays, and in particular to a direct-lit backlight module and a liquid crystal display. Background technique [0003] At present, liquid crystal display has become the mainstream flat panel display device. However, since the liquid crystal panel itself does not emit light, the backlight module has become one of the indispensable and important components of the liquid crystal display. The LED (Light Emitting Diode, light emitting Diode) backlight module is generally a direct type structure. [0004] In order to reduce the light mixing distance, a lens is often installed above the LED lamp in the prior art, and the light emitting principle of the refraction lens is as follow...
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IPC IPC(8): G02F1/13357
CPCG02F1/133603G02F1/133611G02F1/133607
Inventor 李碧莹李富琳李雅娟陈宾
Owner HISENSE VISUAL TECH CO LTD