Display Module Edge Film Structure for Impact Stress Buffering
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Solution Overview
Problem
Display modules face challenges in achieving robustness against external impacts, which can lead to defective pixel areas and increased stress on the display panel, as existing technologies do not effectively absorb and distribute external forces.
Innovation Solution
The display module design incorporates a first and second film protruding beyond the display panel, with adhesive layers, where the films' side surfaces are inclined and parallel to the display panel's thickness direction, absorbing external impacts and reducing stress transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the display panel is cut from a mother substrate using a laser, then productivity is improved, but the display panel becomes vulnerable to external impacts causing defective pixel areas
Solution Approach 1:
The patent applies beforehand cushioning by forming inclined side surfaces on the display panel before it is fully assembled. These inclined side surfaces act as cushioning structures that can absorb and distribute external impact forces before they reach the vulnerable pixel areas of the display panel, thereby preventing defective pixel areas while maintaining high manufacturing productivity from laser cutting of the mother substrate.
2Reliability
If protective films are added to the display panel, then reliability against external impacts is improved, but the device complexity increases
Solution Approach 1:
The patent applies local quality by forming inclined side surfaces only at specific locations (the side surfaces of the display panel) rather than adding protective films across the entire display structure. This localized structural modification provides impact protection exactly where external forces are most likely to affect the panel, while avoiding the added complexity of comprehensive protective film layers throughout the device.
3Reliability
If the side surfaces are made inclined, then external impacts are better absorbed and distributed, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies mechanics substitution by replacing the need for complex mechanical protective structures with a simplified inclined surface geometry. The inclined side surfaces utilize basic mechanical principles of force distribution and stress reduction, achieving effective impact absorption through simple geometric modification rather than complex multi-component mechanical protection systems, thereby reducing manufacturing precision requirements.
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
This design significantly reduces the transmission of external impacts to the display panel, minimizing the risk of cracks and defective pixel areas, and enhances the module's robustness against external forces.
Implementation Method 1
irradiating the preliminary display module with a laser beam; and cutting the preliminary display module to form the first preliminary side surface
Data Source
AI summary
A display module includes a display panel including a first side surface, a first film disposed on the display panel, and including a second side surface, a second film disposed under the display panel, and including a third side surface, a first adhesive layer disposed between the display panel and the first film, and a second adhesive layer disposed between the display panel and the second film, wherein the first side surface of the display panel overlaps the first film and the second film, and at least a portion of the second side surface and at least a portion of the third side surface protrude more than the first side surface, in a plan view.