Display device having current-addressed pixels
Patent 6577302 Issued on June 10, 2003. Estimated Expiration Date: 
March 28, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 28, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesAutomatic temperature monitoring system Current-controlled luminous element array and method for producing the same Patent #: 5670792 InventorsAssigneeApplicationNo. 819284 filed on 03/28/2001US Classes:345/204, DISPLAY DRIVING CONTROL CIRCUITRY345/205, Physically integral with display elements345/206Having common base or substrateExaminersPrimary: Shalwala, BipinAssistant: Kovalick, Vincent E. Foreign Patent References
International ClassG09G 005/00Foreign Application Priority Data2000-03-31 GBAbstractA display device has current-addressed pixels, with the currents being supplied by driver circuitry which comprises a transistor (10) for applying a charging voltage to a switched capacitor arrangement (Ci, S1, S2) arranged to selectively charge and discharge the capacitor (Ci) at a predetermined rate to a charging voltage. A transistor control voltage (Vref) is applied to a control terminal of the transistor which is adjusted depending on the transistor threshold voltage to ensure that the capacitor (Ci) is charged to the charging voltage irrespectively of the value of the threshold voltage. This enables an accurately controllable current to be provided which is used to drive the current-addressed pixels. | |
