Two-stage DAC architecture for LCD source driver utilizing one-bit serial charge redistribution DAC

US8970639B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8970639-B2
Application numberUS-85989310-A
CountryUS
Kind codeB2
Filing dateAug 20, 2010
Priority dateApr 23, 2010
Publication dateMar 3, 2015
Grant dateMar 3, 2015

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Abstract

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A two-stage digital-to-analog converter for outputting an analog voltage in response to a M-bit digital input code includes a one-bit serial charge redistribution digital-to-analog converter having a high reference voltage input node for receiving a high reference voltage and a low reference voltage input node for receiving a low reference voltage. A voltage selector sets the high reference voltage and low reference voltage to selected levels depending on at least a portion of the M-bit digital input code.

First claim

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What is claimed is: 1. A two-stage digital-to-analog converter for outputting an analog voltage in response to a M-bit digital input code, comprising: a one-bit serial charge redistribution digital-to-analog converter having a high reference voltage input node for receiving a high reference voltage and a low reference voltage input node for receiving a low reference voltage, the one-bit serial charge redistribution digital-to-analog converter including: a first capacitor coupled be…

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What does patent US8970639B2 cover?
A two-stage digital-to-analog converter for outputting an analog voltage in response to a M-bit digital input code includes a one-bit serial charge redistribution digital-to-analog converter having a high reference voltage input node for receiving a high reference voltage and a low reference voltage input node for receiving a low reference voltage. A voltage selector sets the high reference vol…
Who is the assignee on this patent?
Tu Nang-Ping, Taiwan Semiconductor Mfg Co Ltd
What technology area does this patent fall under?
Primary CPC classification G09G3/3696. Mapped technology areas include Physics.
When was this patent published?
Publication date Tue Mar 03 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).