Supply voltage independent bandgap circuit
US-9218014-B2 · Dec 22, 2015 · US
Proportional to absolute temperature current generation circuit having higher temperature coefficient, display device including the same, and method thereof
US8994444B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8994444-B2 |
| Application number | US-14980808-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 8, 2008 |
| Priority date | May 18, 2007 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
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A proportional to absolute temperature (PTAT) current generation circuit may include a current mirror unit and/or a level control unit. The current mirror unit may be connected between a first power supply voltage, a first node, and/or a second node. The level control unit may be connected between the first node, the second node, and/or a second power supply voltage. The level control unit may be configured to control a level of an output current of the current mirror unit based on a voltage level of the first node and a voltage level of the second node. The level control unit may include a first transistor connected between the first node and the second power supply voltage, at least one second transistor connected between the second node and a third node, the at least one second transistor configured to operate in a weak inversion region, and/or a third transistor connected between the third node and the second power supply voltage.
First claim
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What is claimed is: 1. A Display Driver Integrated (DDI) circuit comprising: a current mirror unit connected between a first power supply voltage, a first node, and a second node; and a level control unit connected between the first node, the second node, and a second power supply voltage, wherein the level control unit is configured to control a level of an output current of the current mirror unit based on a voltage level of the first node and a voltage level of the second no…
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Frequently asked questions
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- What does patent US8994444B2 cover?
- A proportional to absolute temperature (PTAT) current generation circuit may include a current mirror unit and/or a level control unit. The current mirror unit may be connected between a first power supply voltage, a first node, and/or a second node. The level control unit may be connected between the first node, the second node, and/or a second power supply voltage. The level control unit may …
- Who is the assignee on this patent?
- Baek Seung Hwan, Choi Chang Hwe, Kim Hyung Tae, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification G05F3/30. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 31 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).