Array substrate, preparation method and application thereof and performance improvement method

Abstract

The invention provides an array substrate, a preparation method and an application thereof and a performance improvement method. The array substrate comprises a substrate, a shielding layer, a thin film transistor and a compensation layer, wherein the shielding layer is arranged on one surface of the substrate; the thin film transistor is arranged on the substrate and covers the shielding layer; and the compensation layer is arranged on one side, far from the substrate, of the thin film transistor and used for forming a second electric field in an active layer of the thin film transistor. Therefore, by changing the electric field distribution in the active layer of the thin film transistor, influence of the first electric field to the characteristic of the thin film transistor can be compensated, so that a technical effect of improving or eliminating an abnormal phenomenon of output characteristic curved saturation region warping can be realized, and current normal output can be ensured; and meanwhile, the adverse influence caused by change of a threshold voltage of the thin film transistor due to the first electric field can be improved and compensated, the problem of threshold voltage drifting and the like can be solved, and the thin film transistor can recover to the working state when the active layer is not influenced by the first electric field, and even a higher level.

Description

technical field [0001] The present invention relates to the field of display technology, in particular, to an array substrate and its preparation method, application and performance improvement method. Background technique [0002] In the manufacturing process of display panels or array substrates, the bottom blocking metal (BSM) layer is often used for light shielding layer, fingerprint identification, or in flexible display panels, it is also used to eliminate the influence of mobile charges on the flexible substrate side, but because BSM does not Connected to the circuit, the electric field strength of the additional electric field formed by it is uncontrollable. When the additional electric field acts on the active layer, it may cause the abnormal phenomenon of warping in the saturation area of ​​the output characteristic curve, making the output current abnormal, and even affecting the thin film transistor. threshold voltage. [0003] Therefore, the research on the arr...

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Problems solved by technology

[0002] In the manufacturing process of display panels or array substrates, the bottom blocking metal (BSM) layer is often used for light shielding layer, fingerprint identification, or in flexible display panels, it is also used to eliminate the influence of mobile charges on the flexible substrate side, but because BSM does not Connected to the circuit, the electric field strength of the additional electric field formed by it is uncontrollable. When the additional electric field acts on the active layer, it may cause the abnormal phenomenon of warping in the saturation area of ​​the output characteristic curve, making the output current abnormal, and even affecting the thin film transistor. threshold voltage of

[0003] Therefore, the research on array substrates needs to be deepened

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