Semiconductor device, driver IC, and electronic device
First Claim
1. A semiconductor device comprising:
- a first terminal;
a second terminal;
a third terminal;
a first circuit; and
an amplifier circuit comprising an output terminal, an inverting input terminal, a first non-inverting input terminal, and a second non-inverting input terminal, the amplifier circuit being configured to amplify a difference between a voltage of the inverting input terminal and an average voltage of a voltage of the first non-inverting input terminal and a voltage of the second non-inverting input terminal,wherein the first circuit has a first function, a second function, and a third function,wherein the first function is a function of electrically connecting the inverting input terminal and the second terminal to each other, electrically connecting the first non-inverting input terminal and the first terminal to each other, and electrically connecting the second non-inverting input terminal and the third terminal to each other,wherein the second function is a function of electrically connecting the inverting input terminal and the second terminal to each other, electrically connecting the first non-inverting input terminal and the first terminal to each other, and electrically connecting the second non-inverting input terminal and the first terminal to each other, andwherein the third function is a function of electrically connecting the inverting input terminal and the second terminal to each other, electrically connecting the first non-inverting input terminal and the third terminal to each other, and electrically connecting the second non-inverting input terminal and the third terminal to each other.
1 Assignment
0 Petitions
Accused Products
Abstract
A semiconductor device includes first to fourth terminals, a switch circuit, and an integrating circuit. The integrating circuit includes an amplifier circuit having a (−) terminal, a first (+) terminal, and a second (+) terminal. The integrating circuit is configured to integrate an input signal of the (−) terminal using an average voltage of a voltage of the first (+) terminal and a voltage of the second (+) terminal as a reference voltage. The switch circuit is configured to electrically connect the (−) terminal to the second terminal, the first (+) terminal to the first terminal, the second (+) terminal to the third terminal the (−) terminal to the third terminal, the first (+) terminal to the second terminal, and the second (+) terminal to the fourth terminal. The present semiconductor device is used as a semiconductor device sensing a current flowing through a pixel in a display panel.
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Citations
11 Claims
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1. A semiconductor device comprising:
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a first terminal; a second terminal; a third terminal; a first circuit; and an amplifier circuit comprising an output terminal, an inverting input terminal, a first non-inverting input terminal, and a second non-inverting input terminal, the amplifier circuit being configured to amplify a difference between a voltage of the inverting input terminal and an average voltage of a voltage of the first non-inverting input terminal and a voltage of the second non-inverting input terminal, wherein the first circuit has a first function, a second function, and a third function, wherein the first function is a function of electrically connecting the inverting input terminal and the second terminal to each other, electrically connecting the first non-inverting input terminal and the first terminal to each other, and electrically connecting the second non-inverting input terminal and the third terminal to each other, wherein the second function is a function of electrically connecting the inverting input terminal and the second terminal to each other, electrically connecting the first non-inverting input terminal and the first terminal to each other, and electrically connecting the second non-inverting input terminal and the first terminal to each other, and wherein the third function is a function of electrically connecting the inverting input terminal and the second terminal to each other, electrically connecting the first non-inverting input terminal and the third terminal to each other, and electrically connecting the second non-inverting input terminal and the third terminal to each other. - View Dependent Claims (2, 3)
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4. A semiconductor device comprising:
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a first terminal; a second terminal; a third terminal; a fourth terminal; a fifth terminal; a first circuit; an amplifier circuit comprising an output terminal, an inverting input terminal, a first non-inverting input terminal, and a second non-inverting input terminal, the amplifier circuit being configured to amplify a difference between a voltage of the inverting input terminal and an average voltage of a voltage of the first non-inverting input terminal and a voltage of the second non-inverting input terminal, and a capacitor comprising a sixth terminal electrically connected to the output terminal and a seventh terminal electrically connected to the inverting input terminal, wherein the first circuit has a first function, a second function, a third function, a fourth function, a fifth function, a sixth function, and a seventh function, wherein the first function is a function of electrically connecting the inverting input terminal and the second terminal to each other, electrically connecting the first non-inverting input terminal and the first terminal to each other, and electrically connecting the second non-inverting input terminal and the third terminal to each other, wherein the second function is a function of electrically connecting the inverting input terminal and the third terminal to each other, electrically connecting the first non-inverting input terminal and the second terminal to each other, and electrically connecting the second non-inverting input terminal and the fourth terminal to each other, wherein the third function is a function of electrically connecting the inverting input terminal and the second terminal to each other, electrically connecting the first non-inverting input terminal and the first terminal to each other, and electrically connecting the second non-inverting input terminal and the first terminal to each other, wherein the fourth function is a function of electrically connecting the inverting input terminal and the second terminal to each other, electrically connecting the first non-inverting input terminal and the third terminal to each other, and electrically connecting the second non-inverting input terminal and the third terminal to each other, wherein the fifth function is a function of electrically connecting the inverting input terminal and the third terminal to each other, electrically connecting the first non-inverting input terminal and the second terminal to each other, and electrically connecting the second non-inverting input terminal and the second terminal to each other, wherein the sixth function is a function of electrically connecting the inverting input terminal and the third terminal to each other, electrically connecting the first non-inverting input terminal and the fourth terminal to each other, and electrically connecting the second non-inverting input terminal and the fourth terminal to each other, and wherein the seventh function is a function of electrically connecting each of the first to fourth terminals to the fifth terminal. - View Dependent Claims (5, 6)
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7. A driver IC configured to drive a display unit comprising a pixel array, the driver IC comprising:
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a first circuit configured to generate a grayscale signal; a second circuit comprising a third circuit, an integrating circuit comprising an amplifier circuit and a capacitor, a sample-and-hold circuit configured to sample an analog signal output from the integrating circuit, and an analog-digital conversion circuit configured to convert the analog signal sampled by the sample-and-hold circuit to a digital signal; a first output pin configured to output the grayscale signal; a first input pin; a second input pin; a third input pin; a fourth input pin; and a fifth input pin; wherein the first input pin, the second input pin, the third input pin, and the fourth input pin are configured to be supplied with currents flowing through the pixel array, wherein the amplifier circuit comprises an output terminal, an inverting input terminal, a first non-inverting input terminal, and a second non-inverting input terminal, wherein the amplifier circuit is configured to amplify a difference between a voltage of the inverting input terminal and an average voltage of a voltage of the first non-inverting input terminal and a voltage of the second non-inverting input terminal, wherein the capacitor comprises a first terminal electrically connected to the output terminal and a second terminal electrically connected to the inverting input terminal, wherein the third circuit has a first function, a second function, and a third function, wherein the first function is a function of electrically connecting each of the first input pin, the second input pin, the third input pin, and the fourth input pin to the fifth input pin, wherein the second function is a function of electrically connecting the inverting input terminal and the second input pin to each other, electrically connecting the first non-inverting input terminal and the first input pin to each other, and electrically connecting the second non-inverting input terminal and the third input pin to each other, and wherein the third function is a function of electrically connecting the inverting input terminal and the third input pin to each other, electrically connecting the first non-inverting input terminal and the second input pin to each other, and electrically connecting the second non-inverting input terminal and the fourth input pin to each other. - View Dependent Claims (8, 9, 10, 11)
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Specification