Semiconductor device
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsHajime Kimura, Hiroyuki Miyake
Life of this patent
Estimating the term…
Abstract
To provide a semiconductor device in which external correction can be performed, the area occupied by a read circuit is reduced, and power consumption is reduced. One embodiment of the semiconductor device includes a pixel and a read circuit. The pixel includes a transistor and a display element. The read circuit includes a function selection portion and an operational amplifier. The transistor is electrically connected to the function selection portion through a wiring. The operational amplifier is electrically connected to the function selection portion. The function selection portion includes at least one switch. The function selection portion can select a function of the read circuit by controlling the switch.
Claims16
A semiconductor device comprising:
- a first wiring;
- a second wiring;
- a third wiring;
- a first switch;
- a second switch;
- a third switch;
- a fourth switch;
- and
- an operational amplifier,
- wherein the first switch is electrically connected between the first wiring and a non-inverting input terminal of the operational amplifier,
- wherein the second switch is electrically connected between the second wiring and an output terminal of the operational amplifier,
- wherein the third switch is electrically connected between the third wiring and the output terminal of the operational amplifier,
- wherein the fourth switch is electrically connected between the second wiring and the non-inverting input terminal of the operational amplifier,
- wherein an inverting input terminal of the operational amplifier is electrically connected to the output terminal of the operational amplifier, and
- wherein the second switch is configured to control supplying the second wiring with an output of the operational amplifier.
A semiconductor device comprising:
- a first wiring;
- a second wiring;
- a first switch;
- a second switch;
- a third switch;
- a fourth switch;
- an operational amplifier;
- and
- a capacitor,
- wherein the first switch is electrically connected between an inverting input terminal of the operational amplifier and an output terminal of the operational amplifier,
- wherein the second switch is electrically connected between the first wiring and the output terminal of the operational amplifier,
- wherein the third switch is electrically connected between the second wiring and the output terminal of the operational amplifier,
- wherein the fourth switch is electrically connected between the first wiring and the inverting input terminal of the operational amplifier,
- wherein the capacitor is electrically connected between the inverting input terminal of the operational amplifier and the output terminal of the operational amplifier, and
- wherein the second switch is configured to control supplying the first wiring with an output of the operational amplifier.
A semiconductor device comprising:
- a first wiring;
- a second wiring;
- a third wiring;
- a first switch;
- a second switch;
- a third switch;
- a fourth switch;
- an operational amplifier;
- and
- a pixel including a transistor and a light-emitting element,
- wherein the first switch is electrically connected between the first wiring and a non-inverting input terminal of the operational amplifier,
- wherein the second switch is electrically connected between the second wiring and an output terminal of the operational amplifier,
- wherein the third switch is electrically connected between the third wiring and the output terminal of the operational amplifier,
- wherein the fourth switch is electrically connected between the second wiring and the non-inverting input terminal of the operational amplifier,
- wherein an inverting input terminal of the operational amplifier is electrically connected to the output terminal of the operational amplifier,
- wherein the transistor is electrically connected to the light-emitting element, and
- wherein the transistor is electrically connected to the second wiring.
Dependencies are inferred from the claim text.