Rollable Display Panel Structure for Bending-Stable Signal Input
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Solution Overview
Problem
Rollable display devices face signal input abnormalities due to stress and bending issues during repeated extension and rolling, leading to reduced reliability and display abnormalities.
Innovation Solution
A display device design featuring a rollable portion and a non-rollable portion, where the non-rollable portion is connected to a circuit board, reducing stress and maintaining normal signal input by stabilizing the circuit board during extension and rolling processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the signal input terminal is arranged in the rollable portion of the extendable screen, then the extendable screen can be extended and rolled, but the signal input terminal is prone to be pulled to result in abnormal signal input
Solution Approach 1:
The display panel is divided into a rollable portion and a non-rollable portion. The non-rollable portion contains the signal input terminal and is connected to the circuit board, while the rollable portion can be extended and rolled. This segmentation isolates the signal input terminal from the rolling motion, preventing pulling and signal abnormalities while maintaining extendable screen functionality.
2Adaptability or versatility
If the signal input terminal is disposed in a bending region of the extendable screen, then the extendable screen can be rolled, but the stress in the bending region becomes overly large and the signal input is prone to be abnormal
Solution Approach 1:
The signal input terminal is extracted from the bending region and relocated to the non-rollable portion of the display panel. This extraction removes the signal input terminal from the high-stress bending area, preventing signal abnormalities caused by excessive stress while preserving the rolling capability of the extendable screen.
3Ease of operation
If there is no bending part in the rollable portion after being extended, then the extendable screen can be fully extended, but it is prone to cause the end to be squeezed by stress to result in abnormalities when rolled
Solution Approach 1:
The display panel is segmented into rollable and non-rollable portions. The non-rollable portion acts as a stable base that remains stationary during rolling operations, preventing stress concentration and squeezing at the ends. This segmentation allows the rollable portion to be fully extended while providing a stable anchoring point for rolling operations.
Data Source
AI summary
A display device includes a display panel which includes a rollable portion and a non-rollable portion. The non-rollable portion has two ends. One of the two ends is connected to the rollable portion, and the other of the two ends is connected to a circuit board.