Closed-Loop Airflow Display Assembly for Layer Delamination
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Solution Overview
Problem
Electronic display layers, particularly large ones, are susceptible to distortion due to external forces like air pressure, leading to optical and mechanical issues, and there is a need for a display assembly that provides compressive forces on both sides to prevent bowing and cell breach.
Innovation Solution
A display assembly with closed loop airflow pathways and fan units that generate pressure differentials to apply compressive forces on electronic display layers, using closed loop fan units to create a high-pressure area on one side and a low-pressure area on the other, reducing or eliminating bowing and preventing mechanical separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If electronic display layers are made relatively thin and span a relatively large area, then the display area and thinness are improved, but the layer becomes susceptible to distortion by external forces such as air pressure
Solution Approach 1:
The patent applies counterbalancing air pressure forces on both sides of the electronic display layer to offset the distortion caused by external air pressure. By creating a pressure differential system where air is supplied to both the front and rear surfaces, the display layer experiences balanced forces that prevent bowing and maintain structural stability across large display areas.
Solution Approach 2:
The patent utilizes pneumatic pressure control to maintain the stability of thin electronic display layers. Air supply channels deliver controlled air pressure to both sides of the display layer, creating a pneumatic support system that prevents distortion without requiring mechanical reinforcement, thus maintaining the thin profile while improving stability.
2Stability of the object's composition
If air pressure is applied to reduce bowing of the electronic display layer, then the display stability is improved, but the risk of cell breach and mechanical separation of optical layers increases
Solution Approach 1:
The patent uses counterbalancing air pressure on both sides of the electronic display layer to achieve stability without excessive force on any single surface. By distributing the pressure support across both front and rear surfaces, the system maintains display stability while keeping the net compressive force on individual layers within safe limits that prevent cell breach and optical layer separation.
3Strength
If compressive forces are applied to prevent cell breach and mechanical separation, then the structural integrity is improved, but the complexity of the pressure control system increases
Solution Approach 1:
The patent divides the pressure control system into separate air supply channels for the front and rear surfaces of the electronic display layer. This segmentation allows independent control of pressure on each side, enabling precise management of compressive forces to maintain structural integrity while keeping the control system manageable through modular channel design.
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 or eliminates bowing of electronic display layers by applying inward-directed forces, preventing cell breach and mechanical separation of optical layers, thereby enhancing display stability and performance.
Implementation Method 1
The closed loop fan unit may be configured to generate a relatively high-pressure area at a first side of the closed loop fan unit facing the entrance to the front passageway and illumination device passageway such that such a relatively high-pressure flow is created within at least a portion of the front passageway and illumination device passageway when activated. The closed loop fan unit may be configured to generate a relatively low-pressure area at an opposing side of the closed loop fan unit facing the rear passageway
Implementation Method 2
This may result in inward directed net forces at the electronic display layer which forces the electronic display layer rearward towards the illumination device, thereby reducing or eliminating bowing of the electronic display layer. This arrangement may be configured to create a positive pressure relative to ambient at one or both of a front and/or rear surface of the electronic display layer so as to provide compressive forces at the front and/or rear side of the electronic display layer
Data Source
AI summary
Display assemblies for inhibiting delamination of an optical stack are disclosed. A structural framework defines, at least in part, an enclosure for the optical stack, which includes an electronic display layer. One or more airflow passageways are located within the enclosure and define a continuous, interconnected airflow pathway extending along one or more surfaces of the optical stack. One or more fan units are positioned along the continuous, interconnected airflow pathway, and when activated, move gas through the continuous, interconnected airflow pathway and generate compressive forces at the optical stack, thereby reducing the likelihood of delamination.