Non-Volatile Display for Die Management Information Retention
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Solution Overview
Problem
Conventional display devices for die management information cannot display accumulated shot times during power outages or non-operating conditions, such as storage.
Innovation Solution
A display device attached to a die that uses electric power only for rewriting and displaying information, featuring a non-volatile display that retains information without power, including a laser-type open/close detecting section for counting molding cycles and environmental sensors, and an external power source for operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional display device with continuous power consumption is used to display die management information, then the information can be displayed during operation, but the display cannot retain information during power outages or storage periods
Solution Approach 1:
The display device changes the operational state of the display element between active (power-consuming) and inactive (power-free) states. During operation, the display is active and consumes power to show updated information. During storage or power outages, the display transitions to an inactive state where no power is consumed but the information remains retained, effectively changing the energy consumption parameter based on operational conditions
Solution Approach 2:
The display device operates in periodic cycles between active display mode and inactive retention mode. During molding operations, the display actively updates and shows die management information consuming electric power. During non-operating periods or storage, the display enters a low-power or power-free state while maintaining information retention, creating a periodic pattern of high and low energy consumption states
2Ease of operation
If a display device requires continuous electric power to maintain display content, then information can be updated in real-time, but the device becomes inoperative during power outages or storage
Solution Approach 1:
The invention employs a display technology where the display element itself can be temporarily inactive or 'disposable' in terms of power consumption without losing its information retention capability. The display medium maintains its information-storing function even when not actively powered, allowing the device to be easily deployed and removed during storage periods without requiring continuous power supply infrastructure
3Productivity
If the display continuously rewrites information to show updated die management data, then real-time monitoring is achieved, but power is consumed even during non-operating times
Solution Approach 1:
The display device implements periodic information updating only during active molding operations rather than continuous updates. The display rewrites information at intervals corresponding to molding cycles or at significant events, rather than continuously. During storage or non-operating periods, the display enters a power-free state, eliminating energy waste while maintaining the ability to display information when needed
Solution Approach 2:
The display maintains information retention capability continuously without interruption, but the active display function (power-consuming rewriting) operates only when useful - during molding operations. This ensures that the information storage function is continuous while the power-consuming display function is intermittent, reducing energy loss while maintaining productivity
Data Source
AI summary
A display device to be attached to a die, the display device including a display to rewrite and display die management information obtained in an information acquisition section to obtain the die management information for managing the die. The display uses electric power when display content is rewritten, and the display uses no electric power for keeping the display.