Flexible Display Panel Temperature Control for Winding Damage Prevention
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Solution Overview
Problem
Flexible display panels used in image display apparatuses can be damaged when operated in low-temperature environments, as the plastic substrates harden and become brittle, leading to potential damage during winding or unwinding processes.
Innovation Solution
An image display apparatus with a controller that checks the temperature of the display panel and applies a signal to the pixels to soften the panel before rolling or unrolling, preventing damage by ensuring the panel remains in a flexible state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the flexible display panel is operated in a low-temperature environment, then the display panel can be used in cold conditions, but the plastic substrate hardens and becomes brittle causing potential damage during winding or unwinding
Solution Approach 1:
The controller checks the temperature of the display panel before controlling the roller operation. When the temperature is below the reference temperature, the controller applies a main signal to the pixels to generate heat and soften the plastic substrate before winding or unwinding operations, preventing damage to the hardened substrate
Solution Approach 2:
The controller changes the temperature parameter of the display panel by applying electrical signals to the pixels, which generate heat through resistance. This temperature change transforms the plastic substrate from a hardened brittle state to a softened flexible state, enabling safe mechanical operation
2Ease of operation
If the controller applies signal to pixels to soften the panel, then the panel flexibility is maintained in low temperature, but additional control complexity is required to monitor and adjust temperature
Solution Approach 1:
The controller performs multiple functions: it monitors the temperature of the display panel, determines whether heating is needed based on temperature thresholds, applies heating signals to the pixels when necessary, and controls the roller operations. This multi-functionality avoids adding separate dedicated heating control hardware
Solution Approach 2:
The display panel pixels serve a dual purpose: their primary function of displaying images and their secondary function of generating heat through applied signals. The panel essentially heats itself through the application of main signals to the pixels, eliminating the need for separate heating elements or systems
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Prevents damage to the flexible display panel by maintaining its flexibility in low-temperature environments, improving user satisfaction by ensuring optimal performance despite environmental changes.
Implementation Method 1
applying a main signal to at least one of the plurality of pixels included in the display panel based on the temperature of the display panel
Data Source
AI summary
The present invention relates to an image display device and an operation method therefor. An image display device according to an embodiment of the present invention comprises a housing, a roller disposed inside the housing, and a plurality of pixels. The image display device includes: a display panel that can be wound on or unwound from the roller; and a control unit for controlling the operation of the roller so that the display panel rolls up or rolls down. The control unit can check the temperature of the display panel, and apply a main signal to at least one of the plurality of pixels according to the temperature of the display panel when the temperature of the display panel is less than a reference temperature, and control the operation of the roller when the temperature of the display panel is the reference temperature or higher. Various other embodiments are also possible.