Array substrate, backlight module, display panel, display device and preparation method

Abstract

The embodiment of the invention discloses an array substrate, a backlight module, a display panel, a display device and a preparation method. The array substrate comprises a plurality of driving units. Each driving unit comprises a first electrode, a second electrode and at least one thin film transistor; the first electrode and the second electrode are used for being connected with the anode andthe cathode of a light emitting diode respectively, so that the vertical projection of the light emitting diode on the array substrate can be overlapped with the at least one thin film transistor, andthe thin film transistor is located at the backlight side of the light emitting diode in the light emitting direction of the light emitting diode. The driving unit controls the light-emitting diode to be turned on or off according to the driving signal. According to the embodiment of the invention, the problem that an existing array substrate needs to be additionally provided with a shading layer, so that the preparation process is complex, is solved; the influence of external illumination on the thin film transistor can be avoided, masks and preparation procedures required for preparing theshading layer are saved, the preparation process of the array substrate is simplified, and the manufacturing cost is reduced.

Description

technical field [0001] The embodiments of the present invention relate to the field of display technology, and in particular to an array substrate, a backlight module, a display panel, a display device and a manufacturing method. Background technique [0002] The flat panel display device has many advantages such as thin body, power saving, and no radiation, and has been widely used. The core component of the flat panel display device is a thin film transistor TFT (Thin Film Transistor). In the existing display panel manufacturing process, various semiconductor materials and processes are used to prepare the active layer to improve the carrier mobility of the thin film transistor and increase the response speed. [0003] However, since the active layer of the thin film transistor is greatly affected by light, heat, and electricity, the active layer in the current display panel is easily affected by light during the display process, causing the threshold voltage drift of the...

AI Technical Summary

Problems solved by technology

Although the process of setting the light-shielding layer ensures the performance of the thin film transistor, it needs to set up two additional masks and add two manufacturing processes, which makes the manufacturing process of the array substrate more complicated and the production cost becomes higher.

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