Photodetector and photoelectronic device

Abstract

The invention discloses a photodetector and a photoelectronic device. The photodetector comprises a photosensing element, a first compensating element and a second compensating element, wherein the photosensing element is provided with a first terminal, a second terminal and a third terminal; the first terminal and the second terminal are coupled to a power supply together; the first compensating element is controlled by a first control voltage and electrically connected with the photosensing element; the first compensating element is provided with a fourth terminal, a fifth terminal and a sixth terminal; the fourth terminal is electrically connected to the third terminal of the photosensing element, and the fifth terminal is suitable for controlling the conduction degree of the fourth terminal and the sixth terminal according to the first control voltage; the second compensating element is electrically connected with the first compensating element; the second compensating element is provided with a seventh terminal and an eighth terminal; the seventh terminal is electrically connected with the sixth terminal; and the eighth terminal is coupled to ground potential.

Description

technical field [0001] The invention relates to a light sensor and a photoelectric device, and in particular to a photo sensor and a photoelectric device that can effectively reduce interference signals. Background technique [0002] Generally speaking, disposing light sensors in electronic devices, such as display panels, can be used to sense external ambient light. Both US Pat. No. 7,053,967 and US Pat. No. 5,831,693 mention that a light sensor is disposed in a display panel to be used as a light source for detecting an external environment. [0003] However, in the above-mentioned electronic device or on the panel, due to the design or complexity of the circuit of the device or the panel itself, it is inevitable that electronic signal crosstalk (corsstalk) will occur during its operation. That is to say, when the electronic device is driven, the lines on its circuit will generate noise interference when transmitting electronic signals, thereby affecting the operation of ...

AI Technical Summary

Problems solved by technology

[0003] However, in the above-mentioned electronic device or on the panel, with the design or complexity of the circuit of the device or panel itself, it is inevitable that electronic signal crosstalk (corsstalk) will occur during its operation.

That is to say, when the electronic device is driven, the lines on its circuit will generate noise interference when transmitting electronic signals, thus affecting the operation of other peripheral electronic components, such as light sensors

[0004] In other words, if the noise generated when the electronic device is driven interferes with the circuit of the light sensor, the sensing sensitivity of the light sensor will be reduced, especially when the sensing signal of the light sensor is relatively weak.

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