Brightness enhancement film
A light-enhancing sheet and light-emitting surface technology, which is applied in the field of liquid crystals, can solve the problems of ineffective use of large-angle light and insufficient light utilization, and achieve the effects of improving light utilization, increasing light utilization, and increasing intensity
Inactive Publication Date: 2018-10-09
又进无尘科技(苏州)有限公司
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Problems solved by technology
[0011] The present invention provides a new brightness enhancement sheet to solve the technical problem that the brightness enhancement sheet in the prior art cannot effectively utilize large-angle light, resulting in insufficient light utilization.
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[0030] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0031] refer to Figure 5 , Figure 6 , is a three-dimensional structural schematic diagram of two different embodiments of the brightness enhancement sheet provided by the present invention. The brightness enhancement sheet 15 provided by the present invention is aimed at the problem that a part of the light at a large angle cannot be effectively used in the existing brightness enhancement sheet 15', resulting in loss. By changing the shape and arrangement of the triangular prism columns on the surface of the brightness enhancement sheet 15, the purpose of improving li...
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The invention provides a brightness enhancement film comprising base material which comprises a light incident surface and a light emergent surface. The light emergent surface is provided with a surrounding center. Multiple prism columns which are arranged in a closed way and periodically change in height are arranged around the surrounding center from inside to outside in turn. According to the brightness enhancement film, the objective of enhancing the light utilization rate can be achieved by changing the shape and the arraignment of the prisms arranged on the light emergent surface of thebrightness enhancement film by aiming at the problem of loss caused by the fact that a part of large-angle light cannot be effectively utilized by the present brightness enhancement film. With application of the method that the prism columns of which the height periodically changes are arranged on the light emergent surface of the brightness enhancement film and the light utilization rate can be effectively enhanced so that the intensity of the emergent light of the backlight module group within the specific angle range can be enhanced and the observer is enabled to see the better display effect.
Description
technical field [0001] The invention belongs to the field of liquid crystals, in particular to a brightness enhancement sheet applied to a backlight module of a liquid crystal display. Background technique [0002] Liquid crystal displays are widely used in personal digital assistants, notebook computers, digital cameras, mobile phones, LCD TVs and other electronic products. Since the liquid crystal display itself does not emit light, it needs a backlight module to produce display functions. [0003] The backlight module is generally composed of a light source, a light guide plate, a lower diffuser plate, a lower brightness enhancement film, an upper brightness enhancement film, an upper diffusion plate, and light-shielding black and white glue, etc., please refer to figure 1 , a structural cross-sectional schematic diagram of a backlight module in the prior art, the backlight module 10 includes a reflector 11, a light guide plate 12, a backlight source 13 is included on the...
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IPC IPC(8): G02B5/02
CPCG02B5/0231
Inventor 林刚
Owner 又进无尘科技(苏州)有限公司