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Pixel circuit, display panel and control method

A pixel circuit and circuit technology, which is applied in the field of pixel circuit, display panel and control, can solve problems such as reset abnormality and large reset current, achieve the effect of prolonging reset time, reducing reset current, and ensuring normal display

Active Publication Date: 2021-08-31
HEFEI BOE ZHUOYIN TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the pulse width of the gate control signal of the gate line is fixed (usually only one line of pixel scanning time), the reset current is too large during the reset phase, which easily leads to abnormal reset

Method used

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  • Pixel circuit, display panel and control method
  • Pixel circuit, display panel and control method
  • Pixel circuit, display panel and control method

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Embodiment Construction

[0055] Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, are only for explaining the present application, and should not be construed as limiting the present application.

[0056] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, and doe...

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Abstract

The invention discloses a pixel circuit, a display panel and a control method. The pixel circuit is used for driving a light-emitting element and comprises an input sub-circuit, a driving sub-circuit, a first reset sub-circuit, a data writing sub-circuit and a second reset sub-circuit. The input sub-circuit is connected with a power voltage end, a light-emitting control line and a first node. The driving sub-circuit is connected with the first node, a second node and a third node. The first reset sub-circuit is connected with a first reference voltage end, a first pulse signal line and the third node. The data writing sub-circuit is connected with a data line, a gate line and the third node. The second reset sub-circuit is connected with a second pulse signal line, a second reference voltage end and the second node. In a reset stage, the second reset sub-circuit writes a second reference voltage of the second reference voltage end into the second node according to a second pulse signal of the second pulse signal line, wherein the second pulse signal is a pulse width modulation signal, and has a duration larger than a unit duration. Therefore, abnormal reset caused by overlarge reset current is avoided.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a pixel circuit, a display panel and a control method. Background technique [0002] In the design of medium and large-sized displays of active-matrix organic light-emitting diodes (AMOLED), the pixel circuit is in the reset phase, and the reset voltage is controlled by the gate control signal of the gate line to make the pixel circuit reset. However, since the pulse width of the gate control signal of the gate line is fixed (usually only one row of pixel scanning time), the reset current is too large during the reset phase, which easily leads to abnormal reset. Contents of the invention [0003] This application aims to solve at least one of the technical problems existing in the prior art. Therefore, the present application needs to provide a pixel circuit, a display panel and a control method. [0004] The pixel circuit according to the embodiment of the presen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3233
CPCG09G3/3233
Inventor 袁志东吴仲远李永谦徐攀袁粲
Owner HEFEI BOE ZHUOYIN TECH CO LTD
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