Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Lens for edge-lit display device with light guide plate removed, and display device provided with same

A technology for display devices and lenses, applied in the directions of lenses, optics, light guides, etc., can solve the problems of insufficient diffusion distance of the light source 40, difficulty in thinning the display device, and limited size of the display device, so as to reduce the thickness of the frame and improve Light Concentration Phenomenon and Effect of Hot Spots

Inactive Publication Date: 2020-06-26
HEESUNG ELECTRONICS
View PDF5 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Lens for edge-lit display device with light guide plate removed, and display device provided with same
  • Lens for edge-lit display device with light guide plate removed, and display device provided with same
  • Lens for edge-lit display device with light guide plate removed, and display device provided with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] Advantages and features of the present invention, and means for achieving the advantages and features will be clearly understood by referring to the accompanying drawings and detailed embodiments described 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 for completely disclosing the present invention and for fully informing 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)" another element or layer includes the situation that the element (elements) or layer is arranged directly above 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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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-light display device that eliminates a light guide plate from local light concentration phenomenon and hot spot (hot spot), and a display device including the lens. Background technique [0002] Flat panel display (FPD; Flat Panel Display) devices are widely used in equipment such as TVs, mobile phones, notebook computers and tablet computers, and have plasma panel display (PDP; Plasma Display Panel) devices, liquid crystal display (LCD; Liquid Crystal Display) devices, Organic light-emitting display (OLED; Organic Light-Emitting Display) device, electrophoretic display (electrophoretic display) device, and the like. [0003] Such ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G02B3/08G02F1/13357
CPCG02B6/0055G02B6/0061G02F1/133615
Inventor 文丁模
Owner HEESUNG ELECTRONICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com