Invention Grant
- Patent Title: Output circuit, data driver circuit and display device
- Patent Title (中): 输出电路,数据驱动电路及显示装置
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Application No.: US13155023Application Date: 2011-06-07
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Publication No.: US08653893B2Publication Date: 2014-02-18
- Inventor: Hiroshi Tsuchi
- Applicant: Hiroshi Tsuchi
- Applicant Address: JP Kanagawa
- Assignee: Renesas Electronics Corporation
- Current Assignee: Renesas Electronics Corporation
- Current Assignee Address: JP Kanagawa
- Agency: Foley & Lardner LLP
- Priority: JP2010-130848 20100608; JP2010-130849 20100608; JP2011-096240 20110422
- Main IPC: H03F3/45
- IPC: H03F3/45 ; G06F3/038

Abstract:
An output circuit includes a differential input stage, an output amplifier stage, a current control circuit; an input terminal, an output terminal. The current control circuit includes a first circuit that includes a second current source connected between a first power supply terminal and the second current mirror, and exercises control of switching between activating the second current source to couple a current from the second current source to a current on an input side of the first current mirror, and deactivating the second current source, depending on whether or not the input voltage is higher by more than a first preset value than the output voltage; and a second circuit that includes a third current source connected between the second power supply terminal and the first current mirror, and exercises control of switching between activating the third current source to couple a current from the third current source to a current on an input side of the second current mirror, and deactivating the third current source, depending on whether or not the input voltage is lower by more than a second preset value than the output voltage.
Public/Granted literature
- US20110298777A1 OUTPUT CIRCUIT, DATA DRIVER CIRCUIT AND DISPLAY DEVICE Public/Granted day:2011-12-08
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