Measuring signal circuit and its measuring method

Abstract

The present application provides a measurement signal circuit and a measurement method thereof. The measurement signal circuit includes: a first switch, a control terminal of the first switch is electrically coupled to a first test unit, and the A first end of the first switch is electrically coupled to a first node, a second end of the first switch is electrically coupled to a second node; a second switch, a control end of the second switch Electrically coupled to the first test unit, a first end of the second switch is electrically coupled to a third node, a second end of the second switch is electrically coupled to the second node; and a third switch, a control end of the third switch is electrically coupled to a second test unit, a first end of the third switch is electrically coupled to the second node, the third switch A second end of the first test unit is electrically coupled to a gasket; the other end of the first test unit is electrically received with a first frequency input signal; the other end of the second test unit is electrically received with a second frequency input signal.

Description

technical field [0001] The present application relates to the display field, in particular to a measurement signal circuit and a measurement method thereof. Background technique [0002] A Liquid Crystal Display (LCD) is a flat panel display device that uses the characteristics of liquid crystal materials to display images. Compared with other display devices, it has advantages such as thinness, low driving voltage, and low power consumption. [0003] And the liquid crystal display device usually has a gate driving circuit, a source driving circuit and a pixel array. There are multiple pixel circuits in the pixel array, and each pixel circuit is turned on and off according to the scan signal provided by the gate drive circuit, and displays a data frame according to the data signal provided by the source drive circuit. [0004] The thin film transistor liquid crystal display (Thin Film Transistor Liquid Crystal Display, TFT-LCD) is one of the main types of flat panel display...

AI Technical Summary

Problems solved by technology

[0005] Because there is a certain capacitance and resistance in the wiring on the array substrate, the signal will be distorted after being transmitted by the data line (Data line) and the scanning line (Scan line).

In the process of product development and subsequent analysis, it is often necessary to measure the attenuated voltage signal transmitted through the data line (Data line) and scan line (Scan line) on the array substrate. In practical applications, because the data line (Data line) ) and the end of the scanning line (Scan line) are located at the edge of the glass, and can only be measured after the glass is broken. This method takes a long time, and the product is destroyed after the glass is broken, causing waste. Liquid crystals volatilize, which is harmful to human health after inhalation

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