Portable Terminal Display Crack Prevention Structure
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Solution Overview
Problem
Portable terminals face damage and malfunction due to external impacts, which are not effectively mitigated by existing designs, leading to deformation and cracking of the display module.
Innovation Solution
A portable terminal design featuring a supporting member with a stiff material film and a compressible sponge member to diffuse impact from the display module to the case member, reducing the likelihood of wavelike deformation and edge damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display module is directly attached to the window member and case member without additional support structures, then the device complexity is reduced, but the display module becomes vulnerable to impact damage and deformation
Solution Approach 1:
A supporting member is introduced as an intermediary component between the display module and the case member. This supporting member has a first region that contacts the rear surface of the display module and a second region that contacts the case member, thereby mediating the mechanical connection and impact force distribution between the display module and case member, preventing direct impact transmission that would cause damage
Solution Approach 2:
The supporting member is divided into distinct functional regions: a first region for contacting and supporting the display module, and a second region for contacting and anchoring to the case member. This segmentation allows each region to be optimized for its specific function - the first region for display module support and protection, and the second region for structural anchoring - thereby improving overall impact resistance without excessive complexity
2Reliability
If a supporting member is added to protect the display module from impact, then the impact resistance is improved, but the device complexity and number of components increase
Solution Approach 1:
The supporting member integrates multiple functions into a single component: it provides structural support for the display module, acts as an impact-absorbing element, and serves as an anchoring point to the case member. By combining these functions into one integrated component rather than using separate elements for each function, the design improves durability while minimizing the increase in component count and overall device complexity
3Stability of the object's composition
If the display module is firmly fixed to prevent movement, then the stability is improved, but the impact force is concentrated on specific points causing cracking
Solution Approach 1:
The supporting member changes the mechanical parameters of the display module mounting system by providing a distributed contact surface rather than point contact. This changes the stress distribution parameter from concentrated loads at attachment points to distributed loads across the supporting member's contact surface, thereby maintaining position stability while preventing impact-induced cracking through reduced stress concentration
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
Enhances the durability and reliability of the display module by effectively dispersing impact forces, preventing damage and maintaining functionality during external impacts.
Implementation Method 1
A portable terminal design featuring a supporting member with a stiff material film and a compressible sponge member to diffuse impact from the display module to the case member, reducing the likelihood of wavelike deformation and edge damage
Implementation Method 2
A portable terminal design featuring a supporting member with a stiff material film and a compressible sponge member to diffuse impact from the display module to the case member
Data Source
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Figure 3
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AI summary
A portable terminal includes a display module and a case member coupled to the display module. A face of the case member is formed to have a center portion and an edge, which are different from each other in their heights to thereby support a center portion of the display module in lengthwise and widthwise directions of the display module respectively. The portable terminal configured above supports a rear face of the flat display module using at least one of a portion protruded from the case member and a stiff material film, to thereby diffuse an impact exerted on a display device to the case member. Thus, it is possible to relieve the damage to the flat display device due to an external impact.