Stiffener Design for Display Panel Deformation
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Solution Overview
Problem
The development of slim and lightweight electronic products, such as notebooks, compromises the overall strength of the casing, leading to potential deformation and damage of the display panel when opened or closed, resulting in issues like pooling phenomena and dead pixels.
Innovation Solution
A display device design that incorporates a stiffener with a main body comprising interconnected portions and a fixing member, strategically positioned between the display panel and the back cover, enhances the structural strength while maintaining thinness and lightness by distributing stress effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If thinner and lighter materials are applied to reduce weight, then the weight of the display device is reduced, but the overall strength is weakened
Solution Approach 1:
The back cover is segmented into a first back cover portion and a second back cover portion, with the stiffener disposed between them. This segmentation allows the structure to be divided into functional zones: the first portion provides structural support, the stiffener reinforces specific areas, and the second portion houses display components, thereby achieving both lightweight design and sufficient strength
Solution Approach 2:
The stiffener is strategically disposed between the first and second back cover portions at locations requiring additional reinforcement. This local quality approach strengthens only the critical areas subject to stress during opening and closing operations, rather than uniformly increasing the strength of the entire back cover, thus maintaining lightweight characteristics while providing necessary structural support
2Length of stationary object
If the casing strength is weakened to achieve slimness, then the thickness is reduced, but stress during opening or closing causes display panel deformation
Solution Approach 1:
The stiffener is pre-installed between the first and second back cover portions before the display panel is assembled. This preliminary action ensures that the structural reinforcement is already in place to withstand stress during opening and closing operations, preventing display panel deformation before it occurs
Solution Approach 2:
The back cover assembly combines multiple materials with different properties: the first and second back cover portions provide the basic structural framework, while the stiffener inserted between them adds localized reinforcement. This composite structure achieves both thinness and sufficient stability to protect the display panel during operation
Data Source
AI summary
A display device including a back cover, a frame, a display panel and a stiffener is provided. The display panel is disposed between the back cover and the frame. The stiffener, disposed between the display panel and the back cover, has an opening and includes a main body and at least one fixing member. The main body includes a first portion, a second portion, a third portion and a fourth portion which are one-piece formed and enclose the opening. The first portion has a first outer edge. The second portion has a second outer edge. The fixing member is disposed on the first outer edge. The width of the second portion at the connecting position between the first portion and the second portion is equal to or larger than the distance between the second outer edge and the center of the fixing member.