Lighting test circuit and lighting test method

Abstract

The invention provides a lighting test circuit and a lighting test method. The lighting test circuit is applied to a display module and the display module comprises N common electrode wires; N is an integer greater than 1; the lighting test circuit comprises a common electrode wire on-off unit which is respectively connected with an on-off control wire and the N common electrode wires and is usedfor controlling the on or off of the connection between every two common electrode wires under the control of an on-off control signal on the on-off control wire; and an on-off control unit, wherein the on-off control unit is connected with the on-off control wire and is used for providing the on-off control signal for the on-off control wire. According to the invention, the problems that a checkerboard picture cannot be displayed when the box lighting test is carried out and poor touch control cannot be detected, because the common electrode voltage difference is eliminated by connecting thefirst common electrode wire and the second common electrode wire with the same pin of a lighting signal source chip in the prior art, is solved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a lighting test circuit and a lighting testing method. Background technique [0002] Existing display modules include multi-row and multi-column independent common electrode blocks that can be reused as touch electrode blocks, and the display module can include first common electrode lines and second common electrode lines, so that in the box lighting test Realize the checkerboard screen to detect bad touch at the same time. During the box lighting test, if the common electrode voltage transmitted to the first common electrode line is not equal to the common electrode voltage transmitted to the second common electrode line when displaying a grayscale picture, it will cause a difference in the grayscale picture The degree of checkerboard residual image will affect the detection of bad gray scale. In the prior art, the common electrode voltage difference is eliminated by connect...

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a lighting test circuit and a lighting test method, which solves the problem of connecting the first common electrode line and the second common electrode line included in the display module with the same pin of the lighting signal source chip in the prior art. method to eliminate the voltage difference of the common electrode, so that the checkerboard picture cannot be displayed during the lighting test of the box, and the problem of poor touch control cannot be detected

Images