Display panel and display device

A display panel and transistor technology, applied to static indicators, instruments, etc., can solve problems such as brightness changes

Active Publication Date: 2020-10-23
WUHAN TIANMA MICRO ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the leakage current in the gate of the driving transistor in th

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  • Display panel and display device

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Embodiment Construction

[0022] In order to better understand the technical solutions of the present invention, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0023] It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0024] Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a", "said" and "the" are also intended to include the plural forms unless the context clearly dictates otherwise.

[0025] It should be understood that the term "and...

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Abstract

The embodiment of the invention provides a display panel and a display device. The display panel comprises: a pixel and a pixel driving circuit for driving the pixel, wherein the pixel driving circuitcomprises a driving transistor and a first double-gate transistor electrically connected with the control end of the driving transistor, the first double-gate transistor comprises a first transistor,a second transistor, a first node and an intermediate node which are connected in series, the first node is electrically connected with the control end of the driving transistor, and the intermediatenode is located between the first transistor and the second transistor which are connected in series; and a leakage current prevention module which is electrically connected to the intermediate nodeand is used for enabling the potential difference between the potential of the intermediate node and the potential of the first node to be smaller than a first threshold value. According to the embodiment of the invention, the leakage current of the control end of the driving transistor is reduced through the leakage current prevention module, thereby avoiding the splash screen problem.

Description

【Technical field】 [0001] The present invention relates to the field of display technology, in particular to a display panel and a display device. 【Background technique】 [0002] With the development of OLED technology, more and more wearable devices adopt organic light-emitting (OLED) display panels. However, the usage scenarios of wearable devices are different from products such as mobile phones, tablets and TVs. For example: watches are used to tell time and have the requirement of displaying time for a long time, so low-frequency drive is required to save power consumption. However, due to leakage current in the gate of the driving transistor in the OLED pixel driving circuit, the brightness changes during the display process. 【Content of invention】 [0003] In view of this, the embodiment of the present invention provides a method to solve the problems in the prior art. [0004] On the one hand, an embodiment of the present invention provides a display panel, which...

Claims

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Application Information

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IPC IPC(8): G09G3/3208G09G3/3266G09G3/3233
CPCG09G3/3208G09G3/3266G09G3/3233
Inventor 吴员涛周星耀高娅娜张蒙蒙李玥杨康
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD
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