Display Panel Communication Line Switching Against External Noise
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Solution Overview
Problem
Existing display devices experience erroneous transmission of data voltage due to external noise through communication lines, particularly when using I2C and SPI communication lines connected to external devices.
Innovation Solution
A display device with a line controller that controls the use of communication lines based on the status of the I2C communication line, opening the SPI communication line when I2C is in use to minimize noise interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple communication lines (I2C and SPI) are connected to external devices, then communication versatility is improved, but noise interference increases causing erroneous data transmission
Solution Approach 1:
The patent implements dynamic control of communication lines by enabling or disabling specific lines (I2C or SPI) based on operational requirements. The line controller dynamically switches between different communication modes, activating only the necessary communication line while keeping others inactive, thereby reducing noise interference from unused lines while maintaining communication versatility when needed.
2Productivity
If communication lines are always active, then data transmission capability is improved, but external noise interference increases
Solution Approach 1:
The patent employs periodic activation of communication lines rather than continuous operation. The line controller activates communication lines only during required transmission periods and deactivates them during idle periods, creating a periodic operation pattern that maintains data transmission capability when needed while minimizing exposure to external noise during inactive periods.
Solution Approach 2:
The patent extracts or removes the harmful effect of continuous communication line operation by selectively disabling unused lines. The line controller identifies which communication lines are currently needed and disables the others, effectively taking out the noise-generating potential from inactive lines while preserving the functionality of active lines.
Data Source
AI summary
The present disclosure relates to a display device. A display device according to an exemplary embodiment of the present disclosure includes a display panel in which a plurality of pixels is disposed, a timing controller which generates and outputs drive signals required to drive the display panel, a first communication line which is electrically connected between the timing controller and a first memory and is electrically connected to an external device, a second communication line which is connected between the timing controller and a second memory and is electrically connected to the external device and a line controller which controls whether to use the second communication line depending on whether the first communication line is used.