Electric signal detection module group and driving method thereof, pixel circuit and display device

Abstract

The invention provides an electric signal detection module group and a driving method thereof, a pixel circuit and a display device. The electric signal detection module group comprises a storage capacitor subunit, an operational amplifier subunit, a gain control subunit and a master control subunit. The gain control subunit comprises at least two gain control modules which are mutually connectedin parallel. Each gain control module comprises a gain switch submodule and a gain capacitance submodule which are mutually connected in series. The capacitance values of the gain capacitance submodules included in different gain control modules are different. The master control subunit provides a gain switch control signal to the corresponding gain switch submodule according to the grayscale voltage provided to a pixel unit so that the gain switch submodule is enabled to control to conduct the connection between the first end of the gain switch submodule and the second end of the gain switchsubmodule. Different integral time, gain size and bias size are controlled for the optical signals of different brightness so as to realize accurate compensation for the display image.

Description

technical field [0001] The invention relates to the technical field of display driving, in particular to an electric signal detection module, a driving method, a pixel circuit and a display device. Background technique [0002] In the prior art, the real-time detection and compensation method of optical sensor (sensor) at the sub-pixel level has gradually attracted research in related fields, but due to the differences in the spectral response of optical sensors to different wavelengths, and the OLED (organic light-emitting diode) ) The demand for high contrast poses a great challenge to the optical sensing capability of the optical sensor. The electrical signal detection module included in the existing pixel compensation unit based on optical detection cannot adjust the dynamic gain, integration time and driving voltage according to the gray scale voltage range, so that it cannot achieve accurate compensation for different wavelength spectra and different brightness illumin...

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide an electrical signal detection module, a driving method, a pixel circuit and a display device, so as to solve the problem that the electrical signal detection module included in the existing pixel compensation unit based on optical detection cannot be performed according to the gray scale voltage range. Dynamic gain adjustment, so that it cannot achieve accurate compensation for different wavelength spectra and different brightness illumination images

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