DA conversion circuit, electro-optical device and electronic apparatus
AssigneeSeiko Epson Corporation
InventorHitoshi Ota
Life of this patent
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Abstract
A first capacitance element provided corresponding to a bit D0, a second capacitance element provided corresponding to a bit D1, and a third capacitance element and a fourth capacitance element provided corresponding to a bit D2, and electrically coupled in parallel are included. An area S1 where electrodes of the first capacitance element overlap in plan view is smaller than half an area S2 where electrodes of the second capacitance element overlap in plan view, an area in which electrodes of the third capacitance element overlap in plan view is substantially the same as the area S2, and an area where electrodes of the fourth capacitance element overlap in plan view is substantially the same as the area S2.
Claims13
A DA conversion circuit, comprising:
- a capacitance element unit including a capacitance element having a capacitance value corresponding to a weight of each bit, wherein
- the capacitance element unit includes
- a first capacitance element provided corresponding to a first bit,
- a second capacitance element provided corresponding to a second bit having a greater weight than that of the first bit, and
- a third capacitance element and a fourth capacitance element, provided corresponding to a third bit having a greater weight than that of the second bit, and electrically coupled in parallel,
- the first capacitance element includes a first electrode and a second electrode,
- the second capacitance element includes a third electrode and a fourth electrode,
- the third capacitance element includes a fifth electrode and a sixth electrode,
- the fourth capacitance element includes a seventh electrode and an eighth electrode,
- a first area in which the first electrode and the second electrode overlap in plan view is less than half a second area in which the third electrode and the fourth electrode overlap in plan view,
- an area in which the fifth electrode and the sixth electrode overlap in plan view is substantially the same as the second area, and
- an area in which the seventh electrode and the eighth electrode overlap in plan view is substantially the same as the second area.
A DA conversion circuit, comprising:
- a capacitance element unit including a capacitance element having a capacitance value corresponding to a weight of each bit, wherein
- the capacitance element unit includes
- a capacitance element provided corresponding to one bit of a plurality of bits, and
- two capacitance elements provided corresponding to another bit having a greater weight than that of the one bit, of the plurality of bits,
- an area in which one electrode and another electrode of the capacitance element in the capacitance element provided corresponding to the one bit overlap in plan view is substantially the same as an area in which one electrode and another electrode of each of the two capacitance elements overlap in plan view,
- the one electrode of each of the two capacitance elements is provided in an island shape, and the other electrode of each of the two capacitance elements is a common electrode.
Dependencies are inferred from the claim text.