Invention Grant
- Patent Title: Display element drive circuit and display apparatus
- Patent Title (中): 显示元件驱动电路和显示装置
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Application No.: US11235601Application Date: 2005-09-26
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Publication No.: US07928932B2Publication Date: 2011-04-19
- Inventor: Ikuhiro Yamaguchi , Manabu Takei
- Applicant: Ikuhiro Yamaguchi , Manabu Takei
- Applicant Address: JP Tokyo
- Assignee: Casio Computer Co., Ltd.
- Current Assignee: Casio Computer Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Holtz, Holtz, Goodman & Chick, PC
- Priority: JP2004-279268 20040927
- Main IPC: G09G3/30
- IPC: G09G3/30

Abstract:
A display element drive circuit includes a first circuit which holds as a voltage component electric charges based on a gradation signal corresponding to display data, a second circuit which supplies the gradation signal to the electric charge holding circuit at a timing of application of a selection signal, current control type display elements, and a third circuit which generates a driving current based on the voltage component held in the first circuit and supplies the generated driving current to the display element. One of the second and third circuits includes at least one field effect transistor. The field effect transistor includes gate, source and drain electrodes, and a source-side parasitic capacitance formed between the gate and source electrodes and a drain-side parasitic capacitance formed between the gate and drain electrodes of the field effect transistor have different capacitance values.
Public/Granted literature
- US20060066644A1 Display element drive circuit and display apparatus Public/Granted day:2006-03-30
Information query
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