ESL Driving Chip Integrating Switch Circuit to Reduce Board Size
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Solution Overview
Problem
Conventional electronic shelf label systems have large system circuit boards due to the inclusion of switch circuits for controlling LEDs, leading to increased size and cost.
Innovation Solution
The electronic label device integrates the switch circuit into a driving chip on the driving substrate, eliminating the need for a switch circuit on the system circuit board, and reduces the number of interfaces for control signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the switch circuit is arranged on the system circuit board to control LEDs, then the control function is achieved, but the overall size of the system circuit board becomes large
Solution Approach 1:
The patent merges the switch circuit with the display driving chip, integrating both display driving and LED switching functions into a single chip. This consolidation eliminates the need for separate switch circuit components on the system circuit board, thereby reducing the overall board area while maintaining full control functionality.
Solution Approach 2:
The display driving chip is designed to perform multiple functions: both driving the display module and controlling the LED switching circuit. This multi-functional approach allows a single component to replace what would traditionally require multiple separate components, reducing the system circuit board's area.
2Reliability
If the switch circuit is arranged on the system circuit board, then the control function is achieved, but the number of interfaces for control signal transmission increases
Solution Approach 1:
By combining the switch circuit control function with the display driving chip, the patent reduces the number of separate control interfaces needed. The display driving chip receives control signals and internally manages both display output and LED switching, eliminating the need for additional dedicated switch control interfaces on the system circuit board.
3Reliability
If the switch circuit is arranged on the system circuit board, then the control function is achieved, but the cost of the main controller and system circuit board increases
Solution Approach 1:
The patent consolidates the switch circuit control function into the display driving chip, which is a standard component in display modules. This approach leverages existing display driving chip capabilities and avoids the need for additional control components, thereby reducing overall system cost while maintaining full control functionality.
Solution Approach 2:
By designing the display driving chip to handle both display driving and LED switching control, the patent eliminates the need for separate control components. This multi-functional design reduces the bill of materials cost and simplifies manufacturing, making the system more cost-effective while maintaining full control capabilities.
Data Source
AI summary
An electronic label device for an electronic shelf label system includes a display module, a driving chip and a system circuit board. The display module includes a driving substrate and a display medium arranged on the driving substrate. The driving chip is arranged on the driving substrate and is electrically connected with the driving substrate. The driving chip controls the display module to display images. The driving chip includes a switch circuit. The system circuit board is electrically connected with the driving substrate and the driving chip. The system circuit board includes a main controller and a light-emitting element, which is electrically connected with the switch circuit. The main controller transmits a control signal to the driving chip, and the driving chip controls the switch circuit, based on the control signal, to drive the light-emitting element to emit light.