Display Driver Switching Circuit for Fan-Out Area Reduction
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Solution Overview
Problem
Existing driver circuits face challenges in efficiently driving display panels with reduced fan-out areas, requiring rearrangement of display data sequences due to extended connecting lines in the active area.
Innovation Solution
A driver circuit with a switch circuit and source driver circuit that rearranges display data using control signals, allowing adaptive data sequencing to reduce the fan-out area by employing MOSFET switches and a controller circuit for flexible data output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If extended connecting lines are laid out in the active area to reduce fan-out area length, then the fan-out area length is reduced, but the data arrangement sequence must be changed requiring additional switching control
Solution Approach 1:
A switch circuit is introduced as an intermediary component between the driver chip and display panel. This switch circuit includes multiple switch groups that can dynamically rearrange data sequences based on control signals, enabling the system to adapt to different connecting line layouts without requiring complex external rearrangement logic
Solution Approach 2:
The switch circuit implements dynamic data arrangement by controlling switch groups to connect different data lines to different data output terminals based on real-time control signals. This dynamic reconfiguration allows the system to adapt to varying fan-out area layouts and connecting line arrangements
2Adaptability or versatility
If the data output sequence is changed to adapt to extended connecting lines, then the display panel can be properly driven, but the driver circuit complexity increases
Solution Approach 1:
The switch circuit serves multiple functions: it can rearrange data sequences in different patterns, support various connecting line layouts, and work with different display panel configurations. This multi-functionality is achieved through a unified switch circuit design that can be controlled to implement different data arrangement patterns
Solution Approach 2:
The switch circuit changes its operational parameters (which data lines connect to which output terminals) based on control signals. By dynamically adjusting these connection parameters, the driver circuit can adapt to different data arrangement requirements without changing its fundamental structure
Data Source
AI summary
A driver circuit including a switch circuit and a source driver circuit is provided. The switch circuit is configured to receive an input display data and output an output display data according to two control signals. The input display data and the output display data have different data arrangement. The source driver circuit is coupled to the switch circuit. The source driver circuit is configured to output the output display data to drive a display panel via the switch circuit. An applying sequence of the two control signals is adjusted according to at least one adjustment signal, and the two control signals are applied to switch sets of the switch circuit according to the applying sequence.