Invention Grant
US08344970B2 Transistor control circuits and control methods, and active matrix display devices using the same
有权
晶体管控制电路和控制方法，以及使用其的有源矩阵显示装置
- Patent Title: Transistor control circuits and control methods, and active matrix display devices using the same
- Patent Title (中): 晶体管控制电路和控制方法，以及使用其的有源矩阵显示装置
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Application No.: US12089725Application Date: 2006-09-29
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Publication No.: US08344970B2Publication Date: 2013-01-01
- Inventor: David Andrew Fish , John M. Shannon
- Applicant: David Andrew Fish , John M. Shannon
- Applicant Address: NL Eindhoven
- Assignee: Koninklijke Philips Electronics N.V.
- Current Assignee: Koninklijke Philips Electronics N.V.
- Current Assignee Address: NL Eindhoven
- Agent Kenneth Springer; Mark Beloborodov
- Priority: EP05109491 20051012
- International Application: PCT/IB2006/053558 WO 20060929
- International Announcement: WO2007/042957 WO 20070419
- Main IPC: G09G3/30
- IPC: G09G3/30
Abstract:
A transistor control circuit (74) comprises a source-gated thin film transistor (70), an input for receiving a drive voltage representing a desired control of the source-gated transistor and a current source (82) for causing a known current to pass through the source-gated transistor (70). A first capacitor (78) stores a resulting gate-source voltage of the source-gated transistor when the known current is passed through the source-gated transistor. The drive voltage is modified using the resulting gate-source voltage, and the modified voltage is used in the control of the source-gated transistor. This control can provide a translational shift in the operating characteristics of the transistor, and it has been found that this can compensate for ageing of the transistor, for non-uniformity between different devices, and for temperature variations.
Public/Granted literature
- US20080252573A1 Transistor Control Circuits and Control Methods, and Active Matrix Display Devices Using the Same Public/Granted day:2008-10-16
Information query
IPC分类:
