Segmented Digital Code Display Panel Driving Circuit Pin Reduction
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Solution Overview
Problem
Conventional segmented electronic paper displays require complex wiring and a large number of output pins for their driving circuits, increasing manufacturing costs and complicating the expansion of operational functions.
Innovation Solution
The display panel is structured with digital code display units grouped into multiple segments, where common electrode signals with the same or different waveforms drive different groups of segments, reducing the number of signal pins needed for the driving circuit by using fewer signal lines to transmit electrical signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a common electrode signal is used to drive digital code display units, then the display function is maintained, but the wiring layout becomes complicated and the number of output pins increases
Solution Approach 1:
The display segments are divided into multiple groups (first group, second group, etc.), where each group is driven by different common electrode signals. This segmentation allows selective driving of segment groups, reducing the number of required output pins and simplifying the wiring layout while maintaining complete display functionality.
2Adaptability or versatility
If a driving circuit with a significant number of output pins is designed, then all display segments can be driven, but the manufacturing cost increases
Solution Approach 1:
The common electrode signals serve multiple functions by being selectively applied to different group of display segments. The same common electrode signal can drive different segments in different time periods or configurations, reducing the total number of output pins required and thereby lowering manufacturing costs while maintaining comprehensive driving capability.
3Ease of manufacture
If the number of output pins is reduced, then the manufacturing cost decreases, but the ability to expand operational functions becomes difficult
Solution Approach 1:
The driving circuit employs dynamic signal assignment where common electrode signals are selectively applied to different display segment groups based on operational requirements. This dynamic configuration allows the same reduced set of output pins to support multiple operational functions and future expansions by reconfiguring which segments are activated by which signals.
Data Source
AI summary
A display panel including a plurality of digital code display units is provided. The digital code display units respectively display digital codes. Each of the digital code display units includes a plurality of display segments. The display segments are at least grouped into a first group and a second group. A signal waveform of at least one of a plurality of common voltage signals that drive the first group is the same as a signal waveform of at least one of a plurality of common voltage signals that drive the second group. Furthermore, a driving method of the display panel is also provided.