Display device
US-12080250-B2 · Sep 3, 2024 · US
Liquid crystal display apparatus and LED backlight module thereof
US9053670B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9053670-B2 |
| Application number | US-201313876483-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 13, 2013 |
| Priority date | Mar 11, 2013 |
| Publication date | Jun 9, 2015 |
| Grant date | Jun 9, 2015 |
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Abstract
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A liquid crystal display apparatus includes an LED backlight module incorporated therein, and the LED backlight module includes a boosting circuit for receiving a direct current voltage, boosting the direct current voltage, and then outputting a step-up direct current voltage; an LED string, including a plurality of LEDs connected in series, for receiving the step-up direct current voltage from the boosting circuit; a constant current driver circuit for generating a signal used for controlling the boosting circuit; and a amplified circuit for receiving the direct current voltage, magnifying the signal from the constant current driver circuit, and then outputting a magnified signal to the boosting circuit. The power consumption of the boosting circuit is reduced by adding the amplified circuit for amplifying a driving voltage to the boosting circuit. Furthermore, the driving voltage input to the MOS transistor of the boosting circuit is amplified by the amplified circuit, and thereby the value of the DCR value of the MOS transistor is reduced. The power consumption of the MOS transistor is reduced, and the temperature is lowered, so the lifespan of the MOS transistor is extended.
First claim
Opening claim text (preview).
The invention claimed is: 1. An LED backlight module, used for a liquid crystal display apparatus, comprising: a boosting circuit for receiving a direct current voltage, boosting the direct current voltage, and then outputting a step-up direct current voltage; an LED string, including a sixth resistor and a plurality of LEDs connected in series, for receiving the step-up direct current voltage from the boosting circuit; a constant current driver circuit for generating a signal…
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Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US9053670B2 cover?
- A liquid crystal display apparatus includes an LED backlight module incorporated therein, and the LED backlight module includes a boosting circuit for receiving a direct current voltage, boosting the direct current voltage, and then outputting a step-up direct current voltage; an LED string, including a plurality of LEDs connected in series, for receiving the step-up direct current voltage from…
- Who is the assignee on this patent?
- Shenzhen China Star Optoelect, Shenzhen China Star Optoelect
- What technology area does this patent fall under?
- Primary CPC classification G09G3/34. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jun 09 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).