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Prism sheet and backlight device with same

A prism sheet and prism technology, applied in the field of optics, can solve the problems of low light-gathering efficiency, large thickness, and low light-gathering efficiency of prism sheets, and achieve high light-gathering efficiency, reduce light loss, and reduce thickness

Inactive Publication Date: 2010-02-17
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a prism sheet, aiming to solve the problem of low light-gathering efficiency of the existing prism sheet
[0011] Another technical problem to be solved by the present invention is to provide a backlight device, which aims to solve the problems of low light-gathering efficiency and large thickness of existing backlight devices

Method used

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  • Prism sheet and backlight device with same
  • Prism sheet and backlight device with same
  • Prism sheet and backlight device with same

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Embodiment Construction

[0022] In order to make the technical problems, technical solutions and beneficial effects to be 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.

[0023] see Figure 4 and Figure 5 The prism sheet 80 provided by the embodiment of the present invention includes a light concentrating film 82 and several prism peaks 84 formed on the upper surface of the light concentrating film 82 . The prism peaks 84 are distributed on the light-concentrating film 82 in the form of an array, each prism peak 84 is pyramid-shaped or pyramid-shaped, and has at least 6 edges, and the bottoms of adjacent prism peaks 84 are combined with each other.

[0024] In this embodiment, the prism peaks 84 are arranged on the upper surface ...

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Abstract

The invention relates to a prism sheet and a backlight device with the same. The backlight device at least comprises a luminous element, a light guide plate and the prism sheet. The light guide plateis provided with an incidence surface and the light emitted by the luminous element illuminates onto the incidence surface. The prism sheet is arranged above the light guide plate and comprises a light condensation film and a plurality of prism peaks which are formed on the upper surface of the light condensation film. The prism peaks are distributed on the light condensation film in a form of anarray. Each prism peak is in a pyramid shape or a prismatic table shape and is provided with at least six arrises. The bottoms of the adjacent prism peaks are combined with each other. By adopting thestructure, the backlight device can condense light in a plurality of directions under the condition of using only one prism sheet, thereby facilitating reducing the thickness of the backlight device.

Description

technical field [0001] The invention relates to the field of optics, in particular to a prism sheet for a flat panel display and a backlight device with the prism sheet. Background technique [0002] Because the cathode ray tube (CRT) is harmful to human health, and its structure is bulky and heavy, people have developed a series of flat panel displays to improve the display effect. Such flat panel displays include liquid crystal displays (LCDs), field emission displays (FEDs), plasma display panels (PDPs), light emitting displays (LEDs), and electroluminescent (EL) displays. [0003] Among them, LCD has the characteristics of small size, light weight, and low power consumption. It does not emit light by itself, but adjusts from the backlight through a plurality of liquid crystal devices and a liquid crystal display panel that controls switches for applying video signals to the liquid crystal device. The device illuminates the beam at the level of transmission to display th...

Claims

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Application Information

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IPC IPC(8): G02B5/04G02F1/13357
Inventor 胡德平
Owner BYD CO LTD
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