Display Driver Strobe Signal Noise Masking
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Solution Overview
Problem
Modern image display devices, such as LCD and OLED displays, are susceptible to displaying erroneous data due to noise occurrences, leading to screen defects as external noise affects the display driver ICs during the generation of strobe signals, resulting in abnormal screen displays.
Innovation Solution
The solution involves detecting noise occurrences in image display devices and preventing the generation of strobe signals during such events, using a separator to separate clock and data signals, a lock detector to output a lock signal based on clock waveform comparisons, and a control logic unit to selectively output a strobe signal, thereby masking noise and maintaining prior error-free data for display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If strobe signals are generated continuously for every scan line, then display coverage is improved, but susceptibility to noise-induced display defects increases
Solution Approach 1:
The patent implements a feedback mechanism where the system continuously monitors the validity of incoming display data and clock signals. When noise is detected (indicated by invalid data or clock signal anomalies), the system automatically adjusts strobe signal generation to prevent displaying erroneous information, thus resolving the contradiction between continuous display coverage and noise susceptibility
Solution Approach 2:
The patent applies preliminary validation checks on display data and clock signals before generating strobe signals. By pre-verifying signal validity through checksums or synchronization checks, the system prevents noise-induced defects before they can manifest on display, while still maintaining continuous operation for valid signals
2Reliability
If noise detection and strobe signal control mechanisms are added, then display reliability is improved, but device complexity increases
Solution Approach 1:
The patent integrates noise detection and validation functions into existing display driver IC components that already perform data processing. By making existing components multi-functional (handling both normal data processing and noise detection), the patent improves reliability without proportionally increasing device complexity
Solution Approach 2:
The display driver IC performs self-diagnosis by monitoring its own input signals for validity. The system uses built-in validation logic to detect noise conditions and automatically adjusts strobe signal generation without requiring external intervention, thus improving reliability while minimizing added complexity
3Manufacturing precision
If strobe signals are masked during noise occurrences, then display quality is improved, but productivity decreases due to data retransmission
Solution Approach 1:
The patent applies strobe signal masking selectively only during detected noise occurrences rather than continuously. By applying the corrective action (strobe masking) partially and only when necessary, the system maintains high display quality during noise events while minimizing impact on overall transmission efficiency during normal operation
Data Source
AI summary
An apparatus and a method that quickly detect an error that may occur due to an external noise occurrence during display of image data on a screen of an image display device, and that control a strobe signal output to prevent a screen defect from being displayed on the display device screen.