Invention Grant
- Patent Title: Two-stage DAC architecture for LCD source driver utilizing one-bit serial charge redistribution DAC
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Application No.: US14603424Application Date: 2015-01-23
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Publication No.: US09666156B2Publication Date: 2017-05-30
- Inventor: Nang-Ping Tu
- Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
- Applicant Address: TW Hsin-Chu
- Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee Address: TW Hsin-Chu
- Agency: Duane Morris LLP
- Main IPC: G09G3/36
- IPC: G09G3/36 ; H03M1/68 ; H03M1/72 ; H03M1/76 ; H03M1/80
Abstract:
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.
Public/Granted literature
- US20150138182A1 TWO-STAGE DAC ARCHITECTURE FOR LCD SOURCE DRIVER UTILIZING ONE-BIT SERIAL CHARGE REDISTRIBUTION DAC Public/Granted day:2015-05-21
Information query
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