Pixel circuit and driving method thereof, display panel, and display device
By introducing a second light-emitting control sub-circuit into the pixel circuit, an independent current flow path is provided, which solves the problem of long black bar width in oxide process and achieves better visual experience and eye protection effect.
CN119339654BActive Publication Date: 2026-06-02BOE TECHNOLOGY GROUP CO LTD +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BOE TECHNOLOGY GROUP CO LTD
- Filing Date
- 2024-11-25
- Publication Date
- 2026-06-02
AI Technical Summary
Technical Problem
In existing pixel architectures based on oxide processes, multiple reset periods result in a wider invalid level period for light emission control, leading to a longer black bar width in the PWM, which affects visual experience and eye protection.
Method used
A second light-emitting control sub-circuit is introduced into the pixel circuit to provide a drive current flow path independent of the drive sub-circuit. It uses the first power signal to emit light during the period when the drive current is not provided, thereby reducing the black bar time.
Benefits of technology
By reducing the duration of black bars, flickering is reduced, eye protection is improved, and the user experience of display products is enhanced.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN119339654B_ABST
Abstract
The present disclosure provides a pixel circuit and a driving method thereof, a display panel, and a display device. The pixel circuit includes a driving sub-circuit including a driving transistor electrically connected between a first node and a second node and configured to generate a driving current from a first power signal end to a light emitting unit, a first light emitting control sub-circuit electrically connected to the second node, an anode of the light emitting unit, and a first light emitting control end and configured to transmit the driving current to the anode and drive the light emitting unit to emit light based on a signal of the first light emitting control end, and a second light emitting control sub-circuit electrically connected to the first power signal end, a second power signal end, a second light emitting control end, and the anode and configured to transmit a first power signal of the first power signal end to the anode and drive the light emitting unit to emit light based on a signal of the second light emitting control end. The embodiments provided by the present disclosure reduce the width of the PWM black bar.
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