Pixel circuit, driving method thereof and display panel

A pixel circuit and electrode technology, which is applied in the field of electronic displays, can solve the problems that are not conducive to increasing the number of pixels per inch of the display panel and increase the layout space.

Active Publication Date: 2019-11-01
EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Generally speaking, a threshold compensation circuit at least includes a driving unit, a data writing unit, and a threshold compensation unit. Since the threshold compensation unit i...

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  • Pixel circuit, driving method thereof and display panel
  • Pixel circuit, driving method thereof and display panel
  • Pixel circuit, driving method thereof and display panel

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Embodiment Construction

[0052] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments . Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0053] figure 2 A schematic diagram of a feasible pixel circuit structure provided by an embodiment of the present invention, as shown in figure 2 As shown, the pixel circuit includes: a first data writing unit 11, a second data writing unit 21, a first light emitting unit 12, a second light emitting unit 22, a shared capacitor C33, a first compensation subunit 31 and a second compensation subunit Unit 32, wherein the first data writing...

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Abstract

The invention discloses a pixel circuit, a driving method thereof and a display panel. The pixel circuit comprises a first data writing unit, a second data writing unit, a first light emitting unit, asecond light emitting unit, a sharing capacitor, a first compensation subunit and a second compensation subunit. The first data writing unit is externally connected with a first data signal and is electrically connected with the first light emitting unit through a first node. The second data writing unit is externally connected with a second data signal and is electrically connected with the second light emitting unit through a second node. The first compensation subunit is located between the first light-emitting unit and the shared capacitor, and the first compensation subunit is externallyconnected with a switching signal and a first control signal. The second compensation subunit is located between the second light-emitting unit and the shared capacitor, and the second compensation subunit is externally connected with a switching signal and a second control signal. The first compensation subunit and the second compensation subunit can achieve threshold compensation of the two light-emitting units through one shared capacitor, a smaller layout space is occupied, and therefore the PPI of the display panel is improved.

Description

technical field [0001] The invention relates to the technical field of electronic displays, in particular to a pixel circuit, a driving method thereof, and a display panel. Background technique [0002] In an existing pixel circuit, generally a light emitting diode in the pixel circuit is driven to emit light through a thin film transistor, and this thin film transistor is called a driving transistor. The driving transistor works in a saturated state, because in the saturated state, the sensitivity of the driving current output by the driving transistor to the source-drain voltage is lower than that of the driving transistor in the linear state, which can provide a more stable driving current for the light emitting diode. figure 1 It is a schematic diagram of the existing most basic pixel circuit structure, such as figure 1 As shown, the pixel circuit is composed of two transistors T11 and T12, and a capacitor C11. When the Sn signal controls the transistor T12 to be turne...

Claims

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Application Information

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IPC IPC(8): G09G3/32
CPCG09G3/32
Inventor 王焕楠刘刚
Owner EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD
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