Light guide plate, backlight module, and display device
US-2015378082-A1 · Dec 31, 2015 · US
Optical element, image display device and method for manufacturing same
US2017293149A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2017293149-A1 |
| Application number | US-201715633180-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 26, 2017 |
| Priority date | Nov 15, 2013 |
| Publication date | Oct 12, 2017 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
An optical element includes a light guide plate and a first light transmitting material disposed to be in contact with a first surface of the light guide plate. The light guide plate has a second surface opposite to the first surface. The light guide plate includes a first part and a second part made of a light transmissive material, and a transflective layer disposed between the first part and the second part. The transflective layer is disposed to be inclined with respect to the first surface and the second surface and to extend from the first surface to the second surface. The first surface has a non-flatness portion. The non-flatness portion of the first surface is covered with the first light transmitting material. A surface of the first light transmitting material that is opposite to a surface that is in contact with the first surface is flat.
First claim
Opening claim text (preview).
What is claimed is: 1 . An optical element comprising: a light guide plate; and a first light transmitting material that is disposed so as to be in contact with a first surface of the light guide plate; wherein the light guide plate has a second surface that is opposite to the first surface, the light guide plate includes a first part made of a light transmissive material, a second part made of a light transmissive material, and a transflective layer disposed between the first part and the second part, the transflective layer is disposed so as to be inclined with respect to the first surface and the second surface and so as to extend from the first surface to the second surface, the first light transmitting material, the first part, and the second part have the same refractive index, the first surface of the light guide plate has a non-flatness portion, the non-flatness portion of the first surface is covered with the first light transmitting material, and a surface of the first light transmitting material that is opposite to a surface that is in contact with the first surface is flat. 2 . The optical element according to claim 1 , wherein a first end portion of the transflective layer is exposed in the first surface, and the first end portion of the transflective layer is covered with the first light transmitting material. 3 . The optical element according to claim 1 , further comprising: a second light transmitting material that is disposed so as to be in contact with the second surface of the light guide plate, the second light transmitting material having the same refractive index as the first light transmitting material; wherein the second surface of the light guide plate has a non-flatness portion, the non-flatness portion of the second surface is covered with the second light transmitting material, and a surface of the second light transmitting material that is opposite to a surface that is in contact with the second surface is flat. 4 . The optical element according to claim 3 , wherein a second end portion of the transflective layer is exposed in the second surface, and the second end portion of the transflective layer is covered with the second light transmitting material. 5 . The optical element according to claim 3 , wherein the surface of the first light transmitting material that is opposite to the surface that is in contact with the first surface is parallel with the surface of the second light transmitting material that is opposite to the surface that is in contact with the second surface. 6 . An image display device comprising the optical element according to claim 1 . 7 . An image display device comprising the optical element according to claim 2 . 8 . An image display device comprising the optical element according to claim 3 . 9 . An image display device comprising the optical element according to claim 4 . 10 . An image display device comprising the optical element according to claim 5 .
Assignees
Inventors
Classifications
- G02B6/0035Primary
provided on the surface of the light guide or in the bulk of it · CPC title
- G02B27/0172Primary
characterised by optical features · CPC title
Manufacturing aspects; Material aspects · CPC title
Eyeglass type (eyeglass details G02C) · CPC title
Tapered light guide, e.g. wedge-shaped light guide · CPC title
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Frequently asked questions
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- What does patent US2017293149A1 cover?
- An optical element includes a light guide plate and a first light transmitting material disposed to be in contact with a first surface of the light guide plate. The light guide plate has a second surface opposite to the first surface. The light guide plate includes a first part and a second part made of a light transmissive material, and a transflective layer disposed between the first part and…
- Who is the assignee on this patent?
- Seiko Epson Corp
- What technology area does this patent fall under?
- Primary CPC classification G02B6/0035. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Oct 12 2017 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).