Pixel circuit, driving method thereof and display device
By employing pixel circuits containing current control units and frequency sweep signals in the Micro LED display panel, the emission duration and conduction duration are controlled, thus solving the problem of poor grayscale continuity and achieving better grayscale expansion and brightness uniformity.
CN117198225BActive Publication Date: 2026-07-24CHENGDU VISTAR OPTEOLECTRONICS CO LTD
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHENGDU VISTAR OPTEOLECTRONICS CO LTD
- Filing Date
- 2022-05-30
- Publication Date
- 2026-07-24
Smart Images
Figure CN117198225B_ABST
Abstract
The application discloses a pixel circuit, a driving method thereof and a display device. The pixel circuit comprises a first driving module, a second driving module and a light-emitting module. The first driving module comprises a current control unit, a first driving unit, a first data writing unit and a coupling unit. The current control unit is connected between a first power supply line and a first end of the first driving unit. A first end of the coupling unit is connected to a sweep signal. A second end of the coupling unit is connected to a control end of the first driving unit. An output end of the second driving module is connected to a control end of the current control unit. The technical scheme provided by the embodiment of the application is beneficial to improving the expansion of the gray scale by controlling the different light-emitting durations of the light-emitting module, and the problem of discontinuous gray scale expansion in the prior art is solved, and the reliability of the gray scale modulation is ensured.
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