Display device
US-9632357-B2 · Apr 25, 2017 · US
Backlight unit
US2016259209A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016259209-A1 |
| Application number | US-201415033156-A |
| Country | US |
| Kind code | A1 |
| Filing date | Oct 30, 2014 |
| Priority date | Nov 1, 2013 |
| Publication date | Sep 8, 2016 |
| Grant date | — |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A backlight unit includes an anisotropic sheet disposed between a rectangular display panel portion and a light source disposed directly behind the rectangular display panel portion. The anisotropic sheet is a sheet to transmit and diffuse an emitted light of the light source toward the rectangular display panel portion, and has a structure that makes the emitted light more widely diffuse in a direction along a long side of a display surface of the rectangular display panel portion than in a direction along a short side of the display surface of the rectangular display panel portion. The long side and the short side of the display surface are different lengths.
First claim
Opening claim text (preview).
What is claimed is: 1 . A backlight unit for a rectangular display panel portion and a light source disposed directly behind the display panel portion, wherein two sides of a display surface of the display panel portion are perpendicular to each other and have different lengths, the backlight unit comprising: an anisotropic sheet that is disposed between the rectangular display panel portion and the light source, is a sheet to transmit and diffuse an emitted light of the light source toward the rectangular display panel portion, and has a structure that makes the emitted light more widely diffuse in a direction along a long side of the display surface of the rectangular display panel portion than in a direction along a short side of the display surface of the rectangular display panel portion. 2 . The backlight unit according to claim 1 , further comprising a reflecting plate that is disposed between the light source and the rectangular display panel portion and is a plate to reflect, without transmitting, the emitted light of the light source toward the light source, wherein the reflecting plate has a plurality of light penetrating holes which penetrate from a light source side to a rectangular display panel portion side; and a reflecting sheet that, on a light source side, has an opposed surface which opposed to the reflecting plate, and is a sheet to reflect, without transmitting, the emitted light reflected by the reflecting plate toward the reflecting plate wherein all the plurality of light penetrating holes have a same size, and the number of light penetrating holes per unit area in the reflecting plate increases toward each vertex of the reflecting plate. 3 . The backlight unit according to claim 1 , wherein the rectangular display panel portion is used in an in-vehicle meter.
Assignees
Inventors
Classifications
including a specially adapted diffusing, scattering or light controlling members · CPC title
- G02F1/133611Primary
including means for improving the brightness uniformity · CPC title
including specially adapted reflectors · CPC title
with LEDs · CPC title
creating an anisotropic diffusion characteristic, i.e. distributing output differently in two perpendicular axes · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2016259209A1 cover?
- A backlight unit includes an anisotropic sheet disposed between a rectangular display panel portion and a light source disposed directly behind the rectangular display panel portion. The anisotropic sheet is a sheet to transmit and diffuse an emitted light of the light source toward the rectangular display panel portion, and has a structure that makes the emitted light more widely diffuse in a …
- Who is the assignee on this patent?
- Denso Corp
- What technology area does this patent fall under?
- Primary CPC classification G02F1/133611. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Sep 08 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).