Display Panel Assembly Multiplexer Charging Control
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Solution Overview
Problem
The increasing refresh rate and resolution of display apparatuses result in insufficient charging time for sub-pixels, leading to inadequate charging capability of driving modules, which hampers the display's ability to maintain high refresh rates and resolutions.
Innovation Solution
A display panel assembly with a driving method that includes multiplexers and load switches to efficiently manage data signal generation and distribution, allowing for faster charging of sub-pixels by controlling the connection between signal generating terminals and data lines, thereby reducing the actual processing time and ensuring full charging of sub-pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If refresh rate and resolution of display apparatus are increased, then display quality and performance are improved, but charging time for sub-pixels becomes insufficient
Solution Approach 1:
The patent applies preliminary action by pre-charging data lines before actual data writing to sub-pixels. The driving module performs preliminary charging in advance to reduce the actual charging time during normal operation, enabling faster refresh rates while maintaining sufficient charging time for sub-pixels.
Solution Approach 2:
The patent segments the charging process into multiple phases: preliminary charging phase and actual data writing phase. By dividing the charging task into segments, the system can pre-charge data lines during idle periods and complete actual pixel charging faster during active display refresh cycles.
2Productivity
If more data signal generators are used to charge sub-pixels faster, then charging capability is improved, but device complexity increases
Solution Approach 1:
The patent makes data lines serve multiple functions: they act as charge storage elements during preliminary charging and as data transmission channels during actual data writing. This multi-functionality allows the same hardware infrastructure to support both pre-charging and data writing operations without requiring separate dedicated circuits for each function.
Solution Approach 2:
The patent changes the electrical parameters of data lines dynamically - during preliminary charging, data lines are configured with specific impedance and voltage levels to accept charge efficiently; during data writing, the same lines switch to data transmission mode with different electrical characteristics. This parameter switching enables one set of lines to perform multiple roles.
Data Source
AI summary
A display panel assembly includes a display panel and driving devices. The display panel includes first multiplexers; each first multiplexer is configured to control the first load connection terminal (N11) to be electrically coupled to one of two first data lines (S1), and to control the second load connection terminal (N12) to be electrically coupled to the second or third data line (S2 or S3); each driving device includes data signal generators, and second multiplexers; each second multiplexer is configured to control the first signal generating terminal (N21) to be electrically coupled to one of the two first data signal generators, and control the second signal generating terminal (N22) to be electrically coupled to the second or third data signal generator; and the first and second load connection terminals (N11, N12) are electrically coupled to the first and second signal generating terminals (N21, N22), respectively.