Rollable Flexible Display Power Allocation for Motor Peak Limits
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Solution Overview
Problem
Rollable electronic devices with flexible displays face power management challenges due to high peak power requirements for motor operation, leading to abrupt power-offs when peak power exceeds battery limits.
Innovation Solution
An electronic device with a processor that dynamically adjusts power for both motor and electronic components based on available battery power, identifying specific power levels for motor operation and distributing them effectively to prevent power-offs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the motor power is increased to enable flexible display movement, then the display functionality is improved, but the peak power exceeds battery limits causing abrupt power-offs
Solution Approach 1:
The patent applies dynamics by making the power allocation adjustable and adaptable based on real-time conditions. The processor dynamically determines motor power levels based on battery state and operational requirements, transitioning between different power modes (first power mode for normal operation, second power mode for low battery conditions) to prevent power-offs while maintaining display functionality.
Solution Approach 2:
The patent changes the power parameter dynamically by determining different motor power levels based on battery state. When battery power is sufficient, the motor operates at higher power for smooth display movement. When battery power is low, the motor power is reduced to a lower level that stays within battery limits, preventing abrupt power-offs while still enabling basic display movement.
2Power
If the battery power is increased to support motor operation, then the motor performance is improved, but the device size and weight increase
Solution Approach 1:
The patent applies partial action by providing motor power selectively based on operational needs and battery state. Instead of continuously providing high power, the system provides high power only when necessary and when battery capacity allows, otherwise operating at reduced power levels. This approach enables the use of a smaller battery that can still support the required functionality under appropriate conditions.
3Reliability
If the motor power is reduced to stay within battery limits, then power stability is improved, but the flexible display movement performance deteriorates
Solution Approach 1:
The system dynamically adjusts motor power based on real-time battery state and operational context. When battery power is sufficient, the motor operates at higher power levels for faster display movement. When battery power is low, the system transitions to a lower power mode that maintains basic movement functionality while preventing power-offs, creating a dynamic balance between speed and reliability.
Data Source
AI summary
According to various embodiments, an electronic device may comprise a housing, a plate coupled to the housing to reciprocate, a flexible display including a first portion disposed on the plate and a second portion extending from the first portion and exposed to an outside or retracted into an inside of the housing as the plate reciprocates, a motor configured to move the plate, at least one electronic component, a battery, and at least one processor. The at least one processor may be configured to identify an event for triggering a movement of the plate, identify a first power of the battery and a second power for controlling the flexible display and the at least one electronic component, based on the event, identify a third power for controlling the motor, based on the first power and the second power, and provide the motor with a signal corresponding to the third power.