Shifting register, array substrate and display panel

Abstract

The invention provides a shifting register, an array substrate and a display panel. The shifting register comprises multiple stages of cascade shifting registering circuits, wherein each stage of shifting registering circuit comprises a testing circuit, one end of the testing circuit is connected to a second level end in a coupled mode, the second level end outputs a high level when the shifting register is in a testing mode, and therefore the testing circuit charges the main output end. The array substrate comprises a drive circuit which is composed of the shifting register. The display panel comprises the array substrate and a color-film substrate which is opposite to the array substrate. The shifting register enables all scanning lines of the display panel to be provided with the high level simultaneously, so that direct-current pure-color image detection can be conducted on the display panel, and a traditional liquid crystal cell test is realized. Therefore, a fault caused by an array process and a fault caused by a cell process can be distinguished. In addition, a testing structure is simple, the area of an original shifting register is hardly increased and the manufacturing cost is saved.

Description

technical field [0001] The invention relates to liquid crystal flat panel display technology, in particular to a shift register, an array substrate and a display panel. Background technique [0002] The FPD (Flat Panel Display Device) technology represented by TFT-LCD (Thin film transistor-Liquid crystal display) has developed rapidly since the 1990s and gradually matured. Since TFT-LCD has the advantages of high definition, low power consumption, thinness, and portability, it has been widely used in the above-mentioned information display products, making LCD enter a new stage of high-quality, high-color display, and has broad market prospects. At present, almost all high-end LCDs use TFT active matrix without exception. TFT (Thin film transistor) active matrix mainly includes A-Si (amorphous silicon, amorphous silicon) TFT active matrix and P-Si (poly-silicon, polycrystalline silicon) TFT active matrix. Compared with P-Si TFT technology, A-Si TFT technology is more matur...

AI Technical Summary

Problems solved by technology

However, because the structure of the existing shift register works in a shift register mode, the charging signal output by the previous shift register circuit is the start signal of the next shift register circuit, so the shift register can only The gate lines (Gate lines) of the display panel are charged line by line, instead of being able to charge the gate lines of all display panels together like the previous IC-driven display panels, that is, using the IC-driven switching (Switch) test method, Therefore, the structure of the existing shift register cannot conduct an overall test on the display panel, and cannot measure RGB DC solid-color images well, so it is impossible to comprehensively measure the performance of the display panel

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