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light guide

一种导光层、导光装置的技术，应用在光导、光学、光学元件等方向，能够解决功率降低、厚背光装置等问题，达到加强机械保护、加强光耦合、制造简单的效果

Active Publication Date: 2017-03-15
DESIGN LED PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This has proven problematic in both edge-lit and direct-lit fixtures, and often results in thicker backlit fixtures
Second-order dimming involves when the image content of the display is only achieved by switching in selected areas of the backlight that matches or conforms to the desired image, resulting in a significant reduction in power

Method used

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Examples

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Embodiment Construction

[0050] Substrate

[0051] The substrate can be light transmissive or transparent. Alternatively, the substrate can be opaque. The substrate can be opaque and absorb light, or opaque and reflect light. The substrate may consist of a transparent polymer sheet, such as polyester or polycarbonate. The thickness of the substrate is generally required to be about 0.1 mm, for example, in the range of about 0.1 mm to about 0.2 mm. Optionally, the first refractive index of the substrate is greater than or equal to the refractive index of the first light guiding layer. The substrate typically has a refractive index equal to or greater than about 1.5. For example, the refractive index of the substrate may be 1.50 to 1.61. For example, the refractive index of the substrate may be 1.50 to 1.58. The substrate can be a microstructured film. For example, the substrate may be a Brightness Enhancement Film (BEF).

[0052] light source

[0053] The light source may be any light sourc...

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PUM

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Abstract

The invention relates to a light guide device and a manufacturing method thereof. The light guiding device has a wide range of applications, especially in relation to backlights for displays, such as liquid crystal displays.

Description

[0001] field of invention [0002] The invention relates to a light guide device and a manufacturing method thereof. The light guiding device has wide application, especially for the backlight of display, such as liquid crystal display. Background technique [0003] Many light guides are known. These devices are used for a range of functions including lighting, backlighting, signage and displays. Typically the device consists of an injection molded or machined transparent plastic part with a light source, either a fluorescent lamp or a plurality of light emitting diodes (LEDs), integrated mechanically at the edge of the transparent plastic part. [0004] A feature common to all these devices is that the light from the light source is guided by total internal reflection through a transparent light guide, usually made of plastic. In backlight applications, light emerges in a direction generally perpendicular to its direction of propagation in the transparent light guide. Thi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/00
CPCG02B6/0021G02B6/0035G02B6/0073G02B6/0043G02B6/0011G02B6/4239G02B5/0263
Inventor 詹姆斯·古尔利
Owner DESIGN LED PRODS
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