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

Abstract

The invention provides an array substrate and its preparation method, application and performance improvement method. The array substrate includes: a base substrate; a shielding layer, the shielding layer is arranged on one surface of the base substrate; a thin film transistor, the thin film transistor is arranged on the base substrate and covers the shielding layer; a compensation layer, the compensation layer is arranged on The side of the thin film transistor away from the base substrate is used to form a second electric field in the active layer of the thin film transistor. Therefore, by changing the electric field distribution of the active layer in the thin film transistor, the influence of the first electric field on the characteristics of the thin film transistor is compensated to achieve the technical effect of improving or eliminating the abnormal phenomenon of warping in the saturation region of the output characteristic curve, ensuring normal output of current, At the same time, it improves and compensates the adverse effect of the threshold voltage change of the thin film transistor caused by the first electric field, solves problems such as threshold voltage drift, and restores the thin film transistor to the working state without the first electric field affecting the active layer, or even a better 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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