Driving transistors, array substrates and display panels

Abstract

The invention discloses a driving transistor, an array substrate and a display panel, wherein, the driving transistor comprises: an active layer and a gate layer; the projection of the active layer on the gate layer and the gate layer Partially overlapping, the overlapping active layer includes at least two sections. In the above transistor, the projection of the active layer on the gate layer partly overlaps with the gate layer, and the overlapped part includes at least two sections, and the gate layer does not completely cover the active layer, so that a driving transistor includes at least two channels, Form a double-gate or even multi-gate transistor, so that under the same source-drain voltage, the electric field in the channel is reduced, the saturation of the output curve of the transistor is better, and the saturation area is flatter. When using this driving transistor to drive an OLED device, the TFT output curve The degree of warpage is reduced, and the service life of the OLED device is improved.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a driving transistor, an array substrate and a display panel. Background technique [0002] The lifespan of OLED devices has always been a focus of concern in the industry and urgently needs to be improved. The voltage at the OLED operating point will gradually increase during use, and the operating current will also decrease accordingly. When the increase in the operating voltage of the OLED remains unchanged, the saturation region of the TFT (hereinafter referred to as DTFT) that drives the OLED pixel to emit light will warp. The degree will be significantly increased, so that the operating current of the OLED will drop to a greater degree, resulting in a reduction in the lifetime of the OLED device. Contents of the invention [0003] Based on this, the present invention provides a drive transistor, an array substrate and a display panel that reduce the degree of wa...

AI Technical Summary

Problems solved by technology

The voltage at the OLED operating point will gradually increase during use, and the operating current will decrease accordingly. When the increase in the operating voltage of the OLED remains unchanged, the saturation region of the TFT (hereinafter referred to as DTFT) that drives the OLED pixel to emit light will warp. The degree will increase significantly, so that the OLED operating current will drop to a greater extent, resulting in a reduction in the life of the OLED device

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