Touch-Triggered Display Driver Circuit for Regional Frame Rate Control
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Solution Overview
Problem
Traditional display panels operate all areas at the same frame rate, leading to inefficient power consumption when some partitions do not require frequent screen refresh, and existing frame rate switching methods rely on processor intervention, causing delays and poor user experience.
Innovation Solution
A driver circuit that includes a display driver circuit and a touch driver circuit, allowing for dynamic frame rate adjustment based on touch events to switch between modes with different frame rates in different areas of the display panel, enabling instantaneous mode changes without processor intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the entire display area operates at a high frame rate, then the display quality and responsiveness are improved, but the power consumption increases significantly
Solution Approach 1:
The display panel is divided into multiple partitions, and each partition can independently operate at different frame rates. The driver circuit receives display data for different partitions and configures different refresh frequencies for each partition based on whether touch events occur in corresponding regions, allowing high frame rate only where needed rather than uniformly across the entire display.
Solution Approach 2:
Different regions of the display panel are assigned different quality levels in terms of frame rate. When a touch event occurs in a specific partition, that partition maintains or switches to a high frame rate for responsive interaction, while other partitions that do not require frequent updates operate at lower frame rates to conserve power.
2Adaptability or versatility
If the display panel switches frame rates based on processor intervention, then the frame rate adjustment is controlled, but the response delay increases and user experience deteriorates
Solution Approach 1:
The driver circuit is designed to autonomously detect touch events through the touch sensor circuit and automatically adjust frame rates for different partitions without requiring processor intervention. The driver circuit independently configures the refresh frequency of each partition based on detected touch events, enabling instantaneous mode changes and eliminating the time delay associated with processor-based control.
3Ease of operation
If all partitions refresh at the same high frame rate, then the user experience during touch interaction is improved, but the power consumption increases unnecessarily for static content areas
Solution Approach 1:
The system dynamically adjusts the frame rate of each partition based on real-time touch event detection. When a touch event occurs in a partition, that partition's frame rate is increased to provide responsive interaction. When no touch events occur, the frame rate is reduced for static content areas, creating a dynamic adaptation between power consumption and user experience needs.
Data Source
AI summary
A driver circuit suitable driving a display panel is provided. The driver circuit includes a display driver circuit and a touch driver circuit. The display driver circuit drives the display panel to be operated in a first mode or a second mode. In the first mode, different areas of the display panel have different frame rates. In the second mode, different areas of the display panel have a same frame rate. The touch driver circuit is coupled to the display driver circuit. The touch driver circuit detects a touch event. When the touch driver circuit detects the touch event, the display driver circuit drives the display panel to be switched from the first mode to the second mode.