GOA Circuit Partitioning for Flexible Display Power Reduction
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Solution Overview
Problem
In flexible folding display panels, the Gate Driver on Array (GOA) circuits remain in a full working state even when parts of the panel are not displaying, leading to increased power consumption and energy waste, as they are configured similarly to those for non-folding panels and continue to operate even when the facing-down portion is not displaying.
Innovation Solution
A display driving circuit with multiple independent driving units, each controlling a separate display area, allowing only the necessary units to be activated based on the folding state of the panel, thereby reducing power consumption by partitioning the work among the driving units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If the GOA circuit is configured to drive the entire display panel uniformly, then the display panel can be driven to display, but the power consumption increases when only part of the panel is displaying
Solution Approach 1:
The GOA circuit is divided into multiple independent driving units (first driving unit, second driving unit, third driving unit), each corresponding to a specific display area (first, second, third display areas). This segmentation allows independent control of each driving unit, enabling the circuit to adapt to different folding modes by activating only the necessary driving units, thus reducing power consumption when only part of the panel is displaying.
2Loss of energy
If the GOA circuit remains in full working state, then the display panel can be driven to display, but energy is wasted when parts of the panel are not displaying
Solution Approach 1:
The driving circuit is designed to dynamically adjust its working state based on the folding mode. In the first folding mode, only the first driving unit is activated; in the second folding mode, only the second driving unit is activated; in the third folding mode, only the third driving unit is activated. This dynamic adjustment ensures that driving signals are transmitted reliably to the displaying areas while preventing energy waste in non-displaying areas.
3Use of energy by stationary object
If the GOA circuit is partitioned into independent driving units, then power consumption is reduced, but the device complexity increases
Solution Approach 1:
The GOA circuit is divided into multiple independent driving units, each comprising multiple stages of sub driving units. While this segmentation increases structural complexity, it enables selective activation of driving units based on folding modes, significantly reducing power consumption. The modular design allows each driving unit to be controlled independently by corresponding triggering units, optimizing the balance between complexity and energy efficiency.
4Ease of manufacture
If the GOA circuit uses uniform triggering for all display areas, then the manufacturing process is simple, but the adaptability to different folding modes is poor
Solution Approach 1:
The triggering mechanism is segmented into multiple independent triggering units (first triggering unit, second triggering unit, third triggering unit), each corresponding to a specific driving unit and display area. This segmentation maintains manufacturing simplicity by using standard GOA circuit components while enabling adaptability to different folding modes through selective triggering, allowing the circuit to respond dynamically to horizontal or vertical folding configurations.
Data Source
AI summary
The present application provides a display driving circuit and a display device, wherein the display driving circuit comprises a plurality of driving units, each of the driving units comprises a plurality of stages of sub driving units, each of the driving units is electrically connected to one of independent triggering units, and the sub driving units in the driving units are electrically connected stage by stage; and the display device comprises the display driving circuit. A structure of the driving circuit can realize partitioned work of the driving circuit, and can reduce power consumption of the display device when the display driving circuit is applied in the display device.