Waterproof Glue Trench for E-paper Display Impact Protection
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Solution Overview
Problem
E-paper display devices are vulnerable to surface impacts due to insufficient protection from soft plastic materials, and using tempered glass results in increased thickness and weight.
Innovation Solution
A lightweight electronic-ink display device design featuring a cover plate with a flexible circuit board and waterproof glue, where the electronic-ink display is protected by a frame and waterproof glue filling a trench, providing enhanced protection against impacts while maintaining a thin and lightweight structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If tempered glass is used to protect E-paper display device, then protection against surface impact is improved, but thickness and weight increase
Solution Approach 1:
The patent divides the protective structure into multiple functional layers: a cover plate for impact protection, a frame forming a trench for structural support, and waterproof glue for sealing and bonding. This segmentation allows each component to perform its specific function optimally without requiring a single heavy glass layer
Solution Approach 2:
The patent employs a thin-film structure where the cover plate is disposed on the electronic-ink display and the frame forms a trench that surrounds the display. This thin-film approach provides adequate protection while maintaining a lightweight and thin profile, avoiding the need for thick tempered glass
2Strength
If tempered glass is used to protect E-paper display device, then protection against surface impact is improved, but thickness increases
Solution Approach 1:
The protective structure is segmented into a cover plate, frame with trench, and waterproof glue layers. This segmentation enables distributed protection across multiple thin layers rather than relying on a single thick glass layer, reducing overall device thickness
Solution Approach 2:
The patent utilizes a thin-film construction where the cover plate and frame create a protective enclosure without significant thickness. The trench structure provides structural integrity while maintaining a thin overall profile, avoiding the thickness penalty of tempered glass
3Weight of stationary object
If soft plastic material is used to protect E-paper display device, then weight is reduced, but protection against surface impact is insufficient
Solution Approach 1:
The patent creates a composite protective structure combining the cover plate, frame material, and waterproof glue. This composite construction integrates multiple materials with different properties to achieve both lightweight characteristics and adequate impact protection, overcoming the limitations of soft plastic alone
Solution Approach 2:
The thin-film structure of the cover plate and frame provides a rigid yet lightweight protective enclosure. This thin-film approach delivers sufficient impact resistance without the weight penalty of traditional heavy protective materials
Data Source
AI summary
A display device includes a cover plate, a display, a frame, a flexible circuit board and a water-proof glue. The display is disposed on the cover plate. The frame is disposed on a periphery area of the cover plate and surrounds the display to form a trench. The flexible circuit board includes a first portion and a second portion. The first portion is attached to the front surface of the active array substrate, and the second portion is fastened to the cover plate in the trench. The water-proof glue fills the trench.