Display device
US-2024385479-A1 · Nov 21, 2024 · US
Display backlight with closely spaced light-emitting diode packages
US9239489B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9239489-B2 |
| Application number | US-201213568949-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 7, 2012 |
| Priority date | Jul 31, 2012 |
| Publication date | Jan 19, 2016 |
| Grant date | Jan 19, 2016 |
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- Title
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Abstract
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An electronic device may be provided with a display having backlight structures that include a light guide plate formed from a clear polymer film. The polymer film may have an edge into which light is emitted from an adjacent array of light-emitting diodes. The light emitting diodes may each include a semiconductor device that emits light. The semiconductor device in each diode may be mounted on lead frame structures and wirebonded to the lead frame structures with first and second wire bonds. To improve backlight homogeneity and thereby reduce the mixing distance for light in the light guide plate, the diodes may be spaced closely together using diode packages having end faces that are free of lead frame structures. Exposed lead frame structures for soldering the light-emitting diodes to a substrate may be formed under the light-emitting diodes and on rear surfaces of the light-emitting diodes.
First claim
Opening claim text (preview).
What is claimed is: 1. Display backlight structures, comprising: a light guide plate having an edge; a dielectric substrate layer having solder pads; and light-emitting diodes arranged in a row along the edge that emit light into the edge, wherein each light-emitting diode includes a package having opposing front and rear surfaces, wherein each light-emitting diode includes first and second lead frame structures and a semiconductor device mounted to and wirebonded to one of th…
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Electricity · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
- G02F1/133608Primary
Physics · mapped topic
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- What does patent US9239489B2 cover?
- An electronic device may be provided with a display having backlight structures that include a light guide plate formed from a clear polymer film. The polymer film may have an edge into which light is emitted from an adjacent array of light-emitting diodes. The light emitting diodes may each include a semiconductor device that emits light. The semiconductor device in each diode may be mounted o…
- Who is the assignee on this patent?
- Doyle David A, Gettemy Shawn R, Apple Inc
- What technology area does this patent fall under?
- Primary CPC classification G02F1/133608. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jan 19 2016 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).