Invention Grant
- Patent Title: Drive voltage generating device for liquid crystal display device
- Patent Title (中): 液晶显示装置的驱动电压发生装置
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Application No.: US298678Application Date: 1994-08-31
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Publication No.: US5510814APublication Date: 1996-04-23
- Inventor: Masahiro Ise
- Applicant: Masahiro Ise
- Applicant Address: JPX Osaka
- Assignee: Sharp Kabushiki Kaisha
- Current Assignee: Sharp Kabushiki Kaisha
- Current Assignee Address: JPX Osaka
- Priority: JPX5-216668 19930831; JPX6-063539 19940331
- Main IPC: G02F1/133
- IPC: G02F1/133 ; G09G3/36 ; H02M3/07 ; H02M3/18
Abstract:
A drive voltage generating device for a liquid crystal display device includes a terminal voltage supply source for generating an output voltage of V.sub.S, an actuating voltage supply source for generating an output voltage of V.sub.E, and a plurality of circuit sections. Each circuit section is composed of a first capacitor for storing therein a charge supplied from the terminal voltage supply source, a second capacitor for storing therein a charge transferred from the first capacitor an output terminal section for receiving a voltage V.sub.S from the second capacitor and a switch for switching respective connections between the terminal voltage supply source and the first capacitor, and between the first and second capacitors. The switch is provided for switching between an operation for supplying a charge from the terminal voltage supply source to the first capacitor and an operation for transferring a charge stored in the first capacitor to the second capacitor.
Public/Granted literature
- US6058756A Bending machine Public/Granted day:2000-05-09
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