Cascaded Source Drivers for Display Signal Compensation
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Solution Overview
Problem
Display apparatuses face degradation in performance over time due to uncompensated display signals, leading to complex structures and high power consumption in detection circuits.
Innovation Solution
A driver system comprising a timing controller and cascaded source drivers that receive and transmit sensing signals to compensate display signals, simplifying the structure and reducing power consumption by cascading sensing signals through multiple source drivers to a single timing controller input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a detection circuit for external compensation is provided within the display apparatus, then display performance degradation is compensated, but device complexity and power consumption increase
Solution Approach 1:
The patent merges the detection circuit functionality into the existing source driver circuitry. The source driver integrates both signal driving and detection functions, eliminating the need for a separate detection circuit. This integration reduces overall device complexity while maintaining compensation capability through the source driver's dual functionality.
Solution Approach 2:
The source driver is designed with multi-functionality, serving both as a signal driving circuit and a detection circuit. It can perform detection operations to generate compensation data signals while simultaneously driving the display panel, thereby reducing the number of separate components needed and lowering overall system complexity.
2Reliability
If a detection circuit for external compensation is provided within the display apparatus, then display performance degradation is compensated, but power consumption increases
Solution Approach 1:
By combining detection and driving functions into a single source driver circuit, the patent eliminates redundant power consumption that would occur if separate detection and driving circuits were used. The integrated circuit shares power supply and control resources, reducing overall power consumption while maintaining compensation functionality.
Solution Approach 2:
The source driver performs self-detection and self-compensation functions without requiring separate dedicated detection circuitry. The detection operation is integrated within the source driver itself, allowing the circuit to monitor and compensate for its own performance degradation, thereby reducing the power consumption associated with separate detection systems.
3Measurement precision
If multiple separate detection circuits are used for compensation, then compensation accuracy is improved, but device complexity increases
Solution Approach 1:
The source driver serves as a universal circuit that performs both driving and detection functions. Each source driver can conduct detection operations on its corresponding data line while simultaneously driving the display panel, achieving compensation accuracy without requiring multiple separate detection circuits. The multi-functional design maintains precision while reducing structural complexity.
Data Source
AI summary
The present application provides a driver for driving a display panel. The driver includes a timing controller, and N cascaded source drivers, N being an integer equal to or larger than 2. The N source drivers are configured to receive sensing signals obtained by detecting characteristics of pixel units in the display panel, respectively. An n-th source driver of the N source drivers is configured to transmit the sensing signal received by the n-th source driver to the timing controller through all source drivers of the N source drivers after the n-th source driver as a signal transmission channel, where 1≤n<N and n is an integer. The present application further provides a display apparatus and a method for generating a source driving signal.