Load drive circuit, light emitting diode driver, and display device
US-2024397595-A1 · Nov 28, 2024 · US
Method of driving a light source, light source apparatus for performing the method and display apparatus having the light source apparatus
US8941320B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8941320-B2 |
| Application number | US-201313844592-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 15, 2013 |
| Priority date | May 22, 2012 |
| Publication date | Jan 27, 2015 |
| Grant date | Jan 27, 2015 |
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Abstract
Official abstract text for this publication.
A method of driving a light source includes outputting a variable driving voltage to a light source part, sensing a first voltage based on the driving voltage and developed at a first end of the light source part, sensing a second voltage developed at a second end of the light source part due to current passing through the light source part and adjusting the driving voltage while using the first and second voltages so that power consumption by the light source part is substantially constant irrespective of temperature of the light source part and/or irrespective of a duty cycle ration being used to drive the light source part. Thus, a luminance of the light source part may be maintained at substantially uniform levels.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of driving a light source, the method comprising: outputting a variable driving voltage to a light source part; sensing a first voltage based on the driving voltage at a first end of the light source part; sensing a second voltage at a second end of the light source part; and adjusting the variable driving voltage using the first and second voltages, wherein the first voltage is a linear function of the variable driving voltage, and wher…
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Frequently asked questions
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- What does patent US8941320B2 cover?
- A method of driving a light source includes outputting a variable driving voltage to a light source part, sensing a first voltage based on the driving voltage and developed at a first end of the light source part, sensing a second voltage developed at a second end of the light source part due to current passing through the light source part and adjusting the driving voltage while using the firs…
- Who is the assignee on this patent?
- Samsung Display Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H05B45/48. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 27 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).