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US 2016/0111035 A1Published application
Driver and electronic device
AssigneeSeiko Epson Corporation
InventorAkira MORITA
Life of this patent
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Abstract
In a display device having a driver that drives load lines in an electro-optical panel through capacitor charge redistribution, a data voltage is determined by a capacitance ratio during capacitive driving. However, a panel-side capacitance is a capacitance external to a driver IC, and thus it is difficult to set the capacitance ratio exactly. Accordingly, voltage driving, which outputs a data voltage corresponding to tone data to a data voltage output terminal using a voltage driving circuit, is carried out after capacitive driving that drives the electro-optical panel has been started.
Claims16
A driver comprising:
- a capacitor driving circuit that outputs first to nth capacitor driving voltages (where n is a natural number of 2 or more) corresponding to tone data to first to nth capacitor driving nodes;
- a capacitor circuit including first to nth capacitors provided between the first to nth capacitor driving nodes and a data voltage output terminal;
- and
- a voltage driving circuit that carries out voltage driving, which outputs a data voltage corresponding to the tone data to the data voltage output terminal, after capacitive driving, which drives an electro-optical panel using the capacitor driving circuit and the capacitor circuit, has been started.
1 more element
Dependencies are inferred from the claim text.