Lens for edge light type display device and display device having the same

A side-light type, light guide plate technology, applied in the directions of lenses, light guides, optics, etc., can solve the problems of insufficient diffusion distance of the light source 40, difficulty in achieving thinning of the display device, and limited size of the display device, and reduce the thickness of the frame. , Improve the effect of light concentration and hot spots

Inactive Publication Date: 2016-05-18
HEESUNG ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In order to overcome this light concentration phenomenon, a method of increasing the gap between the reflector 30 and the optical sheet 20 has been proposed, but it is difficult to achieve thinning of the display device itself, so it is difficult to adopt this method.
In addition, if the conventional gap between the reflector 30 and the optical sheet 20 is maintained, the diffusion distance of the light source 40 is insufficient, and the size of the display device is limited.
[0014] In addition, the frame is used to block the hot spots, and the conventional display device structure has limitations in reducing the size of the frame due to such hot spots.

Method used

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  • Lens for edge light type display device and display device having the same
  • Lens for edge light type display device and display device having the same
  • Lens for edge light type display device and display device having the same

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Embodiment Construction

[0029] Advantages and features of the present invention, and means for achieving them will be clearly understood by referring to the accompanying drawings and embodiments described in detail later. However, the present invention is not limited to the embodiments disclosed below, but can be realized in various forms. The present embodiment is provided only to fully disclose the present invention and to fully inform the scope of the invention to those having ordinary knowledge in the art, and the present invention should be defined by the scope of the claims.

[0030] The so-called element (elements) or layer "above (on)" of another element or layer includes the situation that the element (elements) or layer is directly arranged on the other element or layer and other layers or other elements are arranged in between. The condition of the component.

[0031] Although the expressions first, second, etc. are used to describe various components, it goes without saying that these co...

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Abstract

The present invention relates to a lens for an edge light type display device without a light guide plate; and a display device having the lens capable of solving problems on a light concentration of a light incidence part, and an existence of a hot spot by reducing an angle of beam spread using first to third aspheric surfaces. According to an embodiment of the present invention, the lens is a light source lens used for an edge light type display device without a light guide plate. The lens comprises: a first aspheric surface convexly protruding in a direction of a light progression from a light source; a second aspheric surface convexly protruding in the direction of the light progression to reflect or pass the light passed the first aspheric surface; and a third aspheric surface to reflect the light reflected from the first aspheric surface and the second aspheric surface towards the direction of light progression.

Description

technical field [0001] The present invention relates to a lens for a side-light display device without a light guide plate and a display device equipped with the lens, and more particularly relates to a method for reducing the beam angle through the first aspheric surface to the third aspheric surface to improve light incident. A lens for an edge-lit display device that eliminates local light concentration phenomenon and hot spot (hot spot) in a light guide plate, and a display device including the lens. Background technique [0002] Flat panel display (FPD; FlatPanelDisplay) devices are widely used in TVs, mobile phones, notebook computers and tablet computers, etc., with plasma panel display (PDP; PlasmaDisplayPanel) devices, liquid crystal display (LCD; OrganicLight-EmittingDisplay) device and electrophoretic display (electrophoreticdisplay) device. [0003] Such a flat panel display device includes a display panel for displaying images. In the case of a liquid crystal d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B3/08G02F1/13357
CPCG02B6/0055G02B6/0061G02F1/133615
Inventor 文丁模
Owner HEESUNG ELECTRONICS
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