Light Emitting Unit, Display, And Lighting Apparatus

Patent metadata

Field	Value
Publication number	US-2021333461-A1
Application number	US-202117369087-A
Country	US
Kind code	A1
Filing date	Jul 7, 2021
Priority date	Apr 11, 2012
Publication date	Oct 28, 2021
Grant date	—

Abstract

There are provided a light emitting unit that enhances the uniformity of in-plane colors, as well as a display and a lighting apparatus that include such a light emitting unit thereon. The light emitting unit includes: a plurality of light emitting sections each having a light source and a wavelength conversion member, the wavelength conversion member converting a wavelength of light emitted from the light source; an optical component having a light incident surface in opposition to the plurality of light emitting sections; and a color unevenness prevention structure suppressing direct entering of light from the light source into the optical component.

First claim

1 . (canceled)

2 . A display comprising:
a liquid crystal display panel; and a lighting apparatus positioned on a rear side of the liquid crystal display panel, wherein the lighting apparatus comprises: light sources and a wavelength conversion member, the wavelength conversion member converting a wavelength of light emitted from the light sources, the wavelength conversion member including a wavelength conversion material that includes quantum dots which is encapsulated in a material that prevents deterioration from moisture or oxygen; an optical component having a light incident surface in opposition to the light sources, in which the optical component includes a light emission surface that faces the rear side of the liquid crystal display panel; at least one light source substrate that supports the light sources and supplies electrical power to the light sources; and a prevention structure having one or more concave sections, the prevention structure being arranged relative to a first light source and associated first wavelength conversion member such that light from the first light source is prevented from being absorbed by neighboring conversion member regions.

3 . The display of claim 2 , wherein the light emission surface has an uneven pattern.

4 . The display of claim 3 , wherein the uneven pattern of the optical component comprises convex sections.

5 . The display of claim 2 , wherein the light sources are light emitting diodes that generate blue light.

6 . The display of claim 5 , wherein the at least one light source substrate has a wiring pattern.

7 . The display of claim 6 , wherein the optical component is a waveguide.

8 . The display of claim 2 further comprises:
a reflection member facing the rear side of the liquid crystal panel.

9 . The display of claim 8 , wherein the reflection member includes a light diffusion function.

10 . The display of claim 8 , wherein the quantum dots have an axis of 1 nanometer to 100 nanometers and the material is a resin that encapsulates the quantum dots and forms of a film.

11 . The display of claim 2 , wherein the light sources are light emitting diodes that generate blue light.

12 . The display of claim 3 , wherein the uneven pattern comprises microscopic convex sections.

13 . The display of claim 2 , further comprising a front housing in front of the liquid crystal panel.

14 . The display of claim 13 , wherein the front housing comprises metal.

15 . The display of claim 2 , further comprising a rear housing facing a rear side of the light source substrate and enclosed the display.

16 . The display of claim 2 , wherein each of the plurality of light sections include a plurality of light sources, and the plurality of light sources within at least one light section of the plurality of light sections is arrayed at a first predetermined pitch, the first predetermined pitch being different than a second predetermined pitch between the at least one light section and an adjacent light section.

17 . The display of claim 16 , wherein the second predetermined pitch is greater than the first predetermined pitch.

Assignees

• Saturn Licensing Llc

Inventors

• Ohkawa Shingo
• Nakamura Tomoharu
• Yonezawa Gen

Classifications

• H10H20/8514

  characterised by their shape, e.g. plate or foil · CPC title

• G02F1/133615 Primary

  Edge-illuminating devices, i.e. illuminating from the side · CPC title

• G02B6/0031 Primary

  Reflecting element, sheet or layer · CPC title

• G02B6/0055 Primary

  Reflecting element, sheet or layer · CPC title

• F21K9/64

  using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer · CPC title