Display panel and display device

Abstract

The invention discloses a display panel and a display device. Each pixel circuit in the display panel includes a driving module, an organic light-emitting structure, a data writing module, a storage module and at least one control module. The data writing module writes data signals into The control terminal of the drive module; the storage module is electrically connected to the control terminal of the drive module to maintain the voltage of the control terminal of the drive module in the light-emitting stage; the control module is electrically connected to the control terminal of the drive module, and the signal is written into the drive module before the light-emitting stage Control terminal; the continuous gate structure of the control transistor in the control module includes at least one hollow structure, the vertical projection of the hollow structure on the substrate covers the vertical projection of part of the continuous active layer structure on the substrate, and the projected area of ​​the hollow structure on the substrate larger than the projected area of ​​the continuous active layer structure corresponding to the hollow structure on the substrate. Through the technical scheme of the invention, the problem of uneven display existing in the display device is improved.

Description

technical field [0001] Embodiments of the present invention relate to the field of display technology, and in particular, to a display panel and a display device. Background technique [0002] An organic light emitting display device generally includes several pixels, and each pixel includes a pixel driving circuit. The pixel circuit with the simplest structure used in the prior art is a 2T1C structure, that is, the pixel circuit includes two transistors and a storage capacitor, one of which is a switching transistor, and the other transistor is a drive transistor that drives the organic light-emitting structure in the pixel to emit light The pixel circuit may further include a control transistor electrically connected to the gate of the drive transistor, and the control transistor may write a signal into the gate of the drive transistor before the light-emitting phase. The control transistors correspond to a transfer characteristic curve. The transfer characteristic curve ...

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Problems solved by technology

[0004] In view of this, the present invention provides a display panel and a display device. At least one hollow structure is provided on the continuous gate structure of the control transistor electrically connected to the gate of the driving module, so that a plurality of sub-transistors are formed in one control transistor, The voltage between the source and the drain of each sub-transistor is smaller than the voltage between the source and the drain of the control transistor, which reduces the drift degree of the transfer characteristic curve of the control transistor, and reduces the corresponding black picture and white picture of the control transistor. The difference in leakage current between hours improves the problem of uneven display in the display device

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