Pixel circuit, driving method thereof, display substrate, display device

A technology of pixel circuit and voltage drive, applied in the field of pixel circuit and its driving method, display device, and display substrate, which can solve the problems of inconvenient adjustment of the brightness of light-emitting elements and poor driving flexibility

Active Publication Date: 2020-06-30
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a pixel circuit and its driving method, a display substrate, and a display device, which can solve the problems of inconvenient adjustment of the brightness of light-emitting elements and poor driving flexibility in the related art

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  • Pixel circuit, driving method thereof, display substrate, display device
  • Pixel circuit, driving method thereof, display substrate, display device
  • Pixel circuit, driving method thereof, display substrate, display device

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Embodiment Construction

[0041] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0042] The transistors used in all the embodiments of the present invention can be thin film transistors or field effect transistors or other devices with the same characteristics, and the transistors used in the embodiments of the present invention are mainly switching transistors according to their functions in circuits. Since the source and drain of the switching transistor used here are symmetrical, the source and drain are interchangeable. In the embodiment of the present invention, the source is referred to as the first electrode, and the drain is referred to as the second electrode, or the drain may be referred to as the first electrode, and the source is referred to as the second electrode. According to the form in the accompan...

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Abstract

The invention discloses a pixel circuit and a driving method thereof, a display substrate and a display device. The pixel circuit comprises a voltage driving circuit and a current control circuit. Thecurrent control circuit can output the driving voltage to the first node according to the voltage driving circuit. outputting a first driving current to the light-emitting element, Due to the fact that the light-emitting brightness of the light-emitting element is in linear relation with the current and the current is in linear relation with the voltage, the light-emitting brightness of the light-emitting element is in linear relation with the driving voltage, the light-emitting brightness of the light-emitting element can be adjusted more conveniently, and the driving flexibility is higher.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel circuit and a driving method thereof, a display substrate, and a display device. Background technique [0002] Organic light emitting diodes (organic light emitting diodes, OLEDs) are widely used in high-performance display panels due to their advantages of thinness, light emission, high contrast ratio, and wide operating temperature range. For example, OLED devices are currently used in the fastest-growing microdisplays. [0003] In the related art, an OLED display panel may include a plurality of pixel units arranged in an array, and each pixel unit may include a switching transistor, a driving transistor and a light emitting element, and the source of the driving transistor is connected to the light emitting element. Wherein, the switching transistor can output the data voltage provided by the data signal terminal to the gate of the driving transistor, and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3233G09G3/3258G09G3/3291
Inventor 白枭杨盛际
Owner BOE TECH GRP CO LTD
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