Load drive circuit, light emitting diode driver, and display device
US-2024397595-A1 · Nov 28, 2024 · US
Backlight device
US9210752B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9210752-B2 |
| Application number | US-201213353323-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 19, 2012 |
| Priority date | Jan 20, 2011 |
| Publication date | Dec 8, 2015 |
| Grant date | Dec 8, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
A backlight device, used in a liquid crystal display device, comprising: a substrate including first and second areas; a plurality of first light emitting diodes (LEDs) arranged in the first area at a density equal to or higher than a predetermined density; a plurality of second LEDs arranged in the second area at a density lower than the predetermined density; and a control unit configured to control current supplied to the first LEDs with respect to the temperature of the first area, and current supplied to the second LEDs with respect to the temperature of the second area so as to make the rate of change in effective value of the current supplied to the first LEDs different from the rate of change in effective value of the current supplied to the second LEDs when temperatures of the first and second areas are higher than a predetermined temperature.
First claim
Opening claim text (preview).
What is claimed is: 1. A backlight device used in a liquid crystal display device, the backlight device comprising: a substrate including a first area and a second area that is different from the first area; a plurality of first Light Emitting Diodes (LEDs) arranged in the first area at a density equal to or higher than a predetermined density; a plurality of second LEDs arranged in the second area at a density lower than the predetermined density; and a control unit configu…
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Classifications
Electricity · mapped topic
Physics · mapped topic
Physics · mapped topic
- G09G3/3406Primary
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US9210752B2 cover?
- A backlight device, used in a liquid crystal display device, comprising: a substrate including first and second areas; a plurality of first light emitting diodes (LEDs) arranged in the first area at a density equal to or higher than a predetermined density; a plurality of second LEDs arranged in the second area at a density lower than the predetermined density; and a control unit configured to …
- Who is the assignee on this patent?
- Kobayashi Takahiro, Umeda Yoshio, Panasonic Liquid Crystal Displ
- What technology area does this patent fall under?
- Primary CPC classification G09G3/3406. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Dec 08 2015 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).