Display Driver Memory Switching for Image Continuity and Lower Power
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Solution Overview
Problem
Existing display technologies face inefficiencies in power consumption and responsiveness due to the use of memory-based and non-memory-based display modes, leading to increased power consumption when maintaining images on display panels.
Innovation Solution
The implementation of a display driver circuit with a memory that adaptively stores images based on predetermined signals, allowing images to be maintained on the display panel by scanning memory contents, or bypassing memory storage based on signal conditions, thereby reducing power consumption and maintaining image continuity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If images are stored in memory to be maintained on the display panel, then image continuity is improved, but power consumption increases
Solution Approach 1:
The display driver circuit dynamically adjusts its operation mode between memory-based and non-memory-based modes based on real-time signal conditions. When a predetermined signal is detected indicating image maintenance is needed, the circuit stores images in memory and scans them to maintain display continuity. When such signals are not present, the circuit bypasses memory storage to reduce power consumption, thus adapting the system behavior to current operational requirements.
Solution Approach 2:
The system changes its operational parameters by switching between two distinct modes: a memory-based mode for image maintenance and a non-memory-based mode for power savings. The decision to switch modes is based on detecting predetermined signals from the processor, allowing the system to adjust its memory access patterns and scanning frequencies accordingly to balance image continuity and power consumption.
2Stability of the object's composition
If memory-based display mode is used to maintain images, then image continuity is improved, but device complexity increases
Solution Approach 1:
The display driver circuit is designed with multi-functionality to handle both memory-based and non-memory-based display operations. It incorporates memory scanning capabilities when needed while also being able to operate directly from processor outputs. This universal design allows a single circuit to manage diverse display requirements without requiring separate dedicated circuits for each mode, thereby managing complexity while providing versatile functionality.
3Use of energy by moving object
If non-memory-based display mode is used, then power consumption is reduced, but image continuity deteriorates
Solution Approach 1:
The display driver circuit continuously monitors signal conditions from the processor to determine the appropriate operation mode. When predetermined signals indicate that images should be maintained, the circuit switches to memory-based mode to ensure continuity. When such signals are absent, it operates in power-saving mode. This feedback mechanism ensures that image continuity is maintained only when necessary, while power consumption is reduced during periods when image maintenance is not required.
Data Source
AI summary
An example electronic device includes a display panel; a display driver circuit operably coupled to the display panel and including a memory; and a processor operably coupled to the display driver circuit. The processor may be configured to identify a refresh rate; provide, to the display driver circuit, a first signal that indicates storing in the memory one or more images to be provided from the processor for a display on the display panel according to the refresh rate, or provide, to the display driver circuit, a second signal that indicates bypassing to store the one or more images in the memory.