Luminescent device and backlight source

A technology of light-emitting devices and light-emitting surfaces, which is applied in the display field and can solve problems such as small light emitting angles of light-emitting devices, bright spots on the display screen, and uneven brightness of bright rings.

Inactive Publication Date: 2015-01-21
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a light-emitting device and a backlight, which solves the problems in the prior art that the light emitting angle of the lig

Method used

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  • Luminescent device and backlight source
  • Luminescent device and backlight source
  • Luminescent device and backlight source

Examples

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Example Embodiment

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] It should be noted that, in the embodiment of the present invention, the light incident surface of the optical lens, that is, light enters the optical lens through this surface, and similarly, the light exit surface, that is, light is emitted through this surface, and leaves the optical lens.

[0028] The embodiment of the present invention provides a light emitting device 100, such as Figure 5 As shown, the light-emitting dev...

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Abstract

The invention provides a luminescent device and a backlight source in one embodiment, relates to the technical field of display and aims at solving the problem of a small light emergent angel of a luminescent device in the prior art and the problem of non-uniform brightness like light spots and light rings on a display screen if the luminescent device is applied to a backlight source. The luminescent device comprises an LED and an optical lens, wherein the optical lens comprises a light incident surface and a light emergent surface; the light incident surface comprises a concave free-form surface, while the light emergent surface comprises a convex free-form surface; the connection line of the center point of a light-emitting surface and any point of the light incident surface forms a first included angle with an axis of symmetry, and the curvature of the light incident surface is reduced as the first included angle is increased; the connection line of the center point of the light-emitting surface and any point of the light emergent surface forms a second included angle with the axis of symmetry, and the curvature of the light emergent surface is increased as the second included angle is increased; the first included angle and the second included angle are not greater than 90 degrees. The luminescent device is applied to the manufacture of the luminescent device and the backlight source comprising the luminescent device.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a light emitting device and a backlight source. Background technique [0002] Liquid Crystal Displays (LCDs) have been widely used in electronic products with display functions such as mobile phones, computers, and televisions. As we all know, liquid crystal displays need a backlight source to achieve display. The light emitting diode (Light Emitting Diode, LED) has the characteristics of small size, low power consumption, long service life, wide color gamut, etc., and has become the mainstream light source of the backlight source of the liquid crystal display. However, due to the inherent disadvantages of light-emitting diodes such as small light-emitting angles and poor uniformity, the backlight source formed by using light-emitting diodes has problems such as uneven display brightness. [0003] In order to solve the inherent disadvantages of small light-emitting angle and p...

Claims

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Application Information

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IPC IPC(8): F21V5/04F21S8/00G02F1/13357F21Y101/02
CPCH01L33/58G02B19/0061F21V5/04F21S8/00G02F1/133603G02F1/133611
Inventor 李晓平李富琳邵坤
Owner HISENSE VISUAL TECH CO LTD
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