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US 9,318,045 B2Granted
Electro-optical device, method for driving electro-optical device, and electronic apparatus
AssigneeSeiko Epson Corporation
InventorToshiyuki Kasai
Life of this patent
Estimating the term…
Abstract
An electro-optical device includes a display unit in which a plurality of pixel circuits is arranged; and a driving circuit that is disposed to be distanced from the display unit and outputs a signal for driving the plurality of pixel circuits. The display unit and the driving circuit are formed on a first surface of a semiconductor substrate. Each of the pixel circuits has a first transistor, the driving circuit has a second transistor, and the first transistor is formed in a first well and a first substrate potential is supplied. The second transistor is formed in a second well, the first well has the same conductivity type as the second well has, and the first well and the second well are separated from each other.
Claims18
An electro-optical device comprising:
- a semiconductor substrate having a first well, a second well having a same conductivity type as the first well, a first region and a second region, the first region and the second region having a conductivity type different from that of the first and second wells;
- a display unit including a plurality of pixel circuits, each of the pixel circuits including one or more transistors;
- and
- a driving circuit, including first conductivity type of transistors and second conductivity of transistors, that is disposed on the outside of the display unit to be distanced from the display unit and outputs a signal for driving the plurality of pixel circuits,
- wherein
- the one or more transistors are formed in the first well and a common substrate potential is supplied to the one or more transistors,
- the first conductivity type of transistors are formed in the second well,
- the second conductivity of transistors are formed in the first region,
- the first well and the second well are separated from each other by the second region, and
- the second well is formed between the first region and the second region.
7 more elements
An electro-optical device comprising:
- a semiconductor substrate having a first well, a second well having a same conductivity type as the first well, a first region and a second region, the first region and the second region having a conductivity type different from that of the first and second wells;
- a display unit including a plurality of pixel circuits, each of the pixel circuits including a first transistor;
- and
- a driving circuit, including first conductivity type of transistors and second conductivity of transistors, that is disposed distanced from the display unit and outputs a signal for driving the plurality of pixel circuits,
- wherein
- the first transistor is formed in the first well and a first substrate potential is supplied to the first transistor,
- the first conductivity type of transistors are formed in the second well,
- the second conductivity of transistors are formed in the first region,
- the first well and the second well are separated from each other by the second region, and
- the second well is formed between the first region and the second region.
7 more elements
A method comprising:
- forming a first well on a semiconductor substrate;
- forming a second well on the semiconductor substrate, the second well having a same polarity as a polarity of the first well;
- forming a display unit in the first well, the display unit including a plurality of pixel circuits;
- providing one or more transistors in each pixel circuit of the plurality of pixel circuits;
- forming each transistor in the first well and making a substrate potential common;
- forming a first substrate region with a different polarity from the polarity of the first well and the second well such that the display unit is surrounded with the first substrate region and the first substrate region is located inside of a driving circuit in plan view to separate the second well from the first;
- well and
- forming a second substrate region having a same polarity as the polarity of the first substrate region,
- wherein the second well is formed between the first substrate region and the second substrate region.
6 more elements
An electro-optical device comprising:
- a semiconductor substrate of a first conductivity type;
- a first well of a second conductivity type formed on the semiconductor substrate;
- a first substrate region of the first conductivity type bordering the first well;
- a second well of the second conductivity type formed on the semiconductor substrate and separated from the first well by the first substrate region;
- a second substrate region of the first conductivity type bordering the second well;
- a display unit including a plurality of pixel circuits formed in the first well;
- and
- a driving circuit including first conductivity type of transistors formed in the second well and second conductivity of transistors formed in the second substrate region,
- wherein the second well is formed between the first substrate region and the second substrate region.
6 more elements
Dependencies are inferred from the claim text.