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Drive circuit, drive device, and display device

A driving circuit and driving voltage technology, which is applied in the fields of driving circuits, driving devices and display devices, and can solve the problems of increased power consumption, uneven brightness, and unstable current driving of OLED panels, etc.

Active Publication Date: 2022-05-27
MIANYANG HKC OPTOELECTRONICS TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the OLED is current-driven, when the threshold voltage of the thin film transistor (Thin Film Transistor, TFT) shifts, the current drive of the OLED will be unstable, resulting in uneven brightness. At present, it is generally used to compensate the threshold voltage, But the corresponding OLED panel power consumption will also increase

Method used

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  • Drive circuit, drive device, and display device
  • Drive circuit, drive device, and display device
  • Drive circuit, drive device, and display device

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0050] Example 1. Compare the relationship between drive current and preset current threshold:

[0051] Case 1-1:

[0052] The processing module 103 is used to control the driving module 101 to provide a driving voltage to the driving element 102 through the first pole of the driving element 102 when the obtained driving current is less than or equal to the preset current threshold, and the driving voltage is The first voltage is the data voltage. Therefore, in case 1, the data voltage is directly used as the driving voltage to turn on the driving element 102 without additional processing.

[0053] Case 1-2:

[0054] The processing module 103 is configured to control the driving voltage provided by the driving module 101 to the driving element through the first pole to be the second voltage when the acquired driving current is greater than the preset current threshold value, and the first voltage is the second voltage. The two voltages include the data voltage and the thresh...

example 2

[0058] Example 2. Compare the relationship between the input voltage and the preset voltage based on the drive current:

[0059] In an embodiment of the present application, the processing module 103 is specifically configured to determine the input voltage according to the driving current, and to control the driving module 101 to pass the first pole of the driving element 102 when the input voltage is less than or equal to a preset voltage The driving voltage is provided to the driving element 102, and the driving voltage is the first voltage, and when the input voltage is greater than the preset voltage, the driving voltage provided by the driving module 101 to the driving element 102 through the first pole is controlled to be the second voltage.

[0060] Specifically, the processing module 103 sets a preset voltage for judging the magnitude of the driving current. After the processing module 103 obtains the driving current, it converts the driving current into a voltage, whi...

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Abstract

The invention provides a driving circuit, a driving device and a display device, and relates to the technical field of display, the driving circuit comprises a driving module and a processing module, the driving module is connected with a first pole of a driving element, a third pole of the driving element is connected with a load and the processing module, and a second pole of the driving element is connected with a power supply. The driving module is used for providing driving voltage for the first pole of the driving element and compensating threshold voltage of the first pole. The processing module is used for acquiring the driving current of the driving element and controlling the driving voltage provided by the driving module to the driving element to be a first voltage or a second voltage according to the driving current, the first voltage is a data voltage, and the second voltage comprises the data voltage and a threshold voltage. According to the scheme of the invention, the threshold voltage can be compensated or not compensated according to actual requirements, so that the power consumption generated by the driving module can be reduced and the response speed of the light-emitting device is also improved because the driving module does not always compensate the threshold voltage.

Description

technical field [0001] The present application relates to the field of display technology, and in particular, to a driving circuit, a driving device and a display device. Background technique [0002] Active-matrix organic light-emitting diodes (AMOLEDs) have been rated as the most popular in the industry due to their advantages such as self-luminescence, low power consumption, wide viewing angle, high color gamut, high contrast, and fast response. One of the potential display technologies. The brightness of organic light-emitting semiconductors (Organic Light-Emitting Diode, OLED), also known as OLED light-emitting devices, mainly depends on the size of its driving current. Require. [0003] Since OLEDs are current-driven, when the threshold voltage of thin film transistors (Thin Film Transistor, TFT) shifts, the current driving of OLEDs will be unstable, resulting in uneven brightness. At present, threshold voltage compensation is generally used. But the corresponding O...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3233
CPCG09G3/3233Y02B20/30
Inventor 周仁杰袁海江
Owner MIANYANG HKC OPTOELECTRONICS TECH CO LTD