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A source driving circuit, display device and pixel driving method

A source driving and circuit technology, applied in the field of source driving circuits, display devices and pixel driving, can solve the problems of increasing the area of ​​the display device, increasing the occupied space of the pixel driving circuit, reducing the resolution of the display device, etc.

Active Publication Date: 2021-03-23
SHANGHAI SEEO OPTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the internal compensation method will increase the occupied space of the pixel driving circuit, increase the area of ​​the display device, and reduce the resolution of the display device.

Method used

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  • A source driving circuit, display device and pixel driving method
  • A source driving circuit, display device and pixel driving method
  • A source driving circuit, display device and pixel driving method

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Embodiment Construction

[0038] In order to further explain the technical means and effects adopted by the present invention to achieve the intended purpose of the invention, the following is a specific description of a source driving circuit, a display device and a pixel driving method proposed according to the present invention in conjunction with the accompanying drawings and preferred embodiments. Embodiments, structures, features and effects thereof are described in detail below.

[0039] An embodiment of the present invention provides a source drive circuit, including:

[0040]Voltage isolation module, voltage follower module, first voltage divider module, second voltage divider module, first switch module, second switch module, third switch module, fourth switch module, fifth switch module, sixth switch module and current source;

[0041] Wherein, the voltage isolation module is electrically connected between the first node and the second node; the voltage isolation module is used to isolate t...

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Abstract

The invention discloses a source driving circuit, a display device and a pixel driving method. The source drive circuit includes a voltage isolation module, a voltage follower module, a first voltage divider module, a second voltage divider module, a first switch module, a second switch module, a third switch module, a fourth switch module, and a fifth switch module, a sixth switch module and a current source. The technical solution provided by the embodiment of the present invention enables the source drive circuit to build a loop with the drive transistor in the pixel drive circuit, and the drive current flowing through the drive transistor is equal to the data current of the current source, thereby realizing the external control of the threshold voltage drift of the drive transistor Compensation to improve the uniformity of the pixel driving circuit in the display device.

Description

technical field [0001] Embodiments of the present invention relate to the field of display technology, and in particular, to a source driving circuit, a display device, and a pixel driving method. Background technique [0002] The light-emitting element of the organic light-emitting display device is an organic light-emitting diode, which is a current-type light-emitting element that emits light independently, and emits light under the drive of the drive transistor in the pixel drive circuit. The threshold voltage Vth of the transistor is related. In order to avoid the problem that the magnitude of the current flowing through the organic light-emitting element is different due to the drift of the threshold voltage Vth, the threshold voltage Vth is usually compensated during the driving process. [0003] The current compensation methods for the threshold voltage Vth include internal compensation and external compensation. The internal compensation realizes the compensation of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3283G09G3/3233
CPCG09G3/3283G09G3/3233G09G3/3241G09G2300/0819G09G2320/045G09G2300/0426G09G2300/0842G09G2300/0861G09G2310/08
Inventor 刘炳麟张皓东
Owner SHANGHAI SEEO OPTRONICS TECH CO LTD
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