Display Module Cushion Plate for Narrow Bezel and ESD Control
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Solution Overview
Problem
Existing display devices face challenges in reducing the bezel area while maintaining effective heat-dissipation and shock absorption functions, and are prone to greenish defects due to static electricity, with potential interlayer separation and adhesion deterioration between layers of different materials.
Innovation Solution
A display module and device utilizing a cushion plate with a metal foam structure that integrates heat-dissipation and shock absorption functions, featuring a protrusion that discharges static electricity and reduces the bezel area by acting as a charge discharge path without additional components, thus minimizing layer separation and adhesion issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the bezel area is reduced by bending the flexible circuit board more sharply, then the display area increases, but the flexible circuit board becomes difficult to bend stably
Solution Approach 1:
The cushion plate is designed with a protrusion that extends in a direction toward the lower surface of the cover member, utilizing the vertical dimension to provide bending support without increasing the horizontal bezel area. This allows the flexible circuit board to be bent more sharply while maintaining stability through the protrusion's structural support.
2Reliability
If the thickness of the heat-dissipation layer and cushion layer is increased, then the heat-dissipation function and shock absorption function improve, but the total thickness of the display device increases, resulting in an increase in the bezel area
Solution Approach 1:
The cushion plate integrates both the heat-dissipation layer and cushion layer into a single unified structure. The cushion plate's body serves as the heat-dissipation layer while its protrusion provides shock absorption, eliminating the need for separate layers and reducing the total thickness, thereby minimizing the bezel area while maintaining both heat-dissipation and shock absorption functions.
Solution Approach 2:
The cushion plate is designed to perform multiple functions simultaneously: the body provides heat dissipation, the protrusion provides shock absorption, and the overall structure provides mechanical support. This multi-functionality eliminates the need for separate dedicated layers for each function, reducing the total thickness and bezel area.
3Stability of the object's composition
If separate adhesive layers are added to bond different material layers, then the layers remain bonded, but the thickness increases and the cost of the module increases
Solution Approach 1:
The cushion plate integrates the heat-dissipation layer and cushion layer into a single unified structure, eliminating the need for separate adhesive layers to bond different materials. The integrated design maintains layer stability while reducing total thickness and manufacturing complexity.
4Object-affected harmful factors
If a protrusion is added to the cushion plate to discharge static electricity, then greenish defects are suppressed, but the structural complexity increases
Solution Approach 1:
The protrusion of the cushion plate serves multiple functions: it provides shock absorption, acts as a charge discharge path to suppress greenish defects, and maintains structural support. This multi-functionality adds the greenish defect suppression capability without significantly increasing overall structural complexity.
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
The solution effectively reduces the bezel area, enhances heat-dissipation and shock absorption, suppresses greenish defects, and simplifies the manufacturing process by eliminating the need for separate layers and adhesive components, while maintaining structural integrity and design flexibility.
Implementation Method 1
a cushion plate with a metal foam structure that integrates heat-dissipation and shock absorption functions
Implementation Method 2
featuring a protrusion that discharges static electricity and reduces the bezel area by acting as a charge discharge path
Data Source
AI summary
A display module and display device that may suppress a greenish defect and reduce a bezel area while improving a heat-dissipation performance and a shock absorption function include an integral cushion plate including at least one protrusion protruding from and extending along an edge portion of a body with the cushion plate placed on a lower surface of a display panel, and the protrusion brought into contact with a cover member. Further, the protrusion of the cushion plate is bent to have an inclined part so that the protrusion does not contact the side surface of the display panel and contacts the cover member.