Light-emitting device
US-2016190409-A1 · Jun 30, 2016 · US
Display device
US10139546B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10139546-B2 |
| Application number | US-201715408327-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 17, 2017 |
| Priority date | Jan 22, 2016 |
| Publication date | Nov 27, 2018 |
| Grant date | Nov 27, 2018 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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- CPC / IPC classifications
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- Citations and related patents
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Abstract
Official abstract text for this publication.
A display device is disclosed. The display device includes a display panel, a light guide plate located in a rear of the display panel, a light assembly located on a side of the light guide plate and providing the light guide plate with light, and a light absorbing portion formed on a back surface or a front surface of the light guide plate and absorbing the light provided by the light assembly in a predetermined wavelength range.
First claim
Opening claim text (preview).
What is claimed is: 1. A display device comprising: a display panel; a light guide plate located at a rear of the display panel; a light assembly located at a side of the light guide plate and configured to provide the light guide plate with light; a light absorbing portion formed on a back surface of the light guide plate and configured to absorb the light provided by the light assembly in a predetermined wavelength range; and a reflective portion formed on the back surface of the light guide plate and configured to reflect the light provided by the light assembly on the display panel, wherein the light absorbing portion is formed around the reflective portion. 2. The display device of claim 1 , wherein at least one of the light absorbing portion or the reflective portion forms a pattern, and wherein the pattern is uniformly distributed or uniformly sized. 3. The display device of claim 1 , wherein at least one of the light absorbing portion or the reflective portion forms a pattern, and wherein the pattern is non-uniformly distributed or non-uniformly sized. 4. The display device of claim 1 , wherein the light absorbing portion and the reflective portion are formed as one body. 5. The display device of claim 1 , wherein the reflective portion comprises a groove formed on the back surface of the light guide plate, and wherein the light absorbing portion is positioned in the groove. 6. The display device of claim 1 , wherein the reflective portion comprises a groove formed on the back surface of the light guide plate, and wherein the light absorbing portion is positioned around the groove. 7. The display device of claim 1 , wherein the light absorbing portion includes tetraaza porphyrin derivatives. 8. The display device of claim 1 , wherein the light absorbing portion includes sub-phthalocyanine pigment. 9. The display device of claim 1 , wherein the predetermined wavelength range is a wavelength range of 530 nm to 630 nm. 10. The display device of claim 1 , wherein the predetermined wavelength range is between a wavelength of green light and a wavelength of red light. 11. The display device of claim 1 , wherein the light absorbing portion is attached to the back surface of the light guide plate. 12. The display device of claim 1 , wherein the light absorbing portion includes a reflective material. 13. The display device of claim 12 , wherein a density of a pattern of the light absorbing portion increases as it approaches the light assembly. 14. The display device of claim 1 , further comprising an ink layer at the back surface of the light guide plate, wherein the ink layer comprises the reflective portion and the light absorbing portion. 15. The display device of claim 14 , wherein a thickness of the ink layer decreases as it approaches the light assembly.
Assignees
Inventors
Classifications
Manufacturing aspects; Material aspects · CPC title
to provide homogeneous light output intensity · CPC title
Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide · CPC title
- G02B6/0043Primary
provided on the surface of the light guide · CPC title
Wavelength selective element, sheet or layer, e.g. filter or grating · CPC title
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Frequently asked questions
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- What does patent US10139546B2 cover?
- A display device is disclosed. The display device includes a display panel, a light guide plate located in a rear of the display panel, a light assembly located on a side of the light guide plate and providing the light guide plate with light, and a light absorbing portion formed on a back surface or a front surface of the light guide plate and absorbing the light provided by the light assembly…
- Who is the assignee on this patent?
- Lg Electronics Inc
- What technology area does this patent fall under?
- Primary CPC classification G02B6/0043. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Nov 27 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).