Adjustable Gap Mechanism for Display Co-Planarity
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Solution Overview
Problem
The assembly of embedded touch panels in display devices faces challenges in achieving co-planarity between the touch panel and the system front cover due to accumulated tolerances, leading to assembly variations and reduced production yield.
Innovation Solution
A display device design featuring a frame with a protruding pillar and a display module with a through hole in the supporting case, allowing for adjustable gaps to ensure the display surface and outer surface are coplanar, thereby reducing assembly variations and improving accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the embedded touch panel is assembled using conventional stacking methods with bezel, tape, and supporting frame, then the assembly process is simple, but the accumulated tolerances cause height difference and failure to achieve co-planarity
Solution Approach 1:
The patent introduces an adjustable gap mechanism between the flange and the inner surface of the board, allowing the assembly structure to be dynamically adjusted during assembly. This enables compensation for accumulated tolerances and achievement of co-planarity between the touch panel and system front cover surfaces.
Solution Approach 2:
The protruding pillar connected to the flange acts as an intermediary element between the board and the display module. This mediator component provides a reference surface and adjustment mechanism that facilitates precise positioning and co-planarity achievement without requiring complex direct assembly of all components.
2Manufacturing precision
If the tolerances of bezel, tape, supporting frame, and touch panel are strictly controlled to achieve co-planarity, then the assembly accuracy improves, but the manufacturing cost increases and production yield decreases
Solution Approach 1:
The patent changes the assembly parameter from fixed tight tolerance stacking to adjustable gap control. By allowing a controlled gap between the flange and board inner surface that can be adjusted during assembly, the system achieves co-planarity without requiring extremely tight tolerances on all individual components, thereby improving production yield.
Solution Approach 2:
The protruding pillar and flange structure performs preliminary positioning and alignment before final assembly completion. This preliminary action establishes a reference framework that guides subsequent assembly steps, ensuring co-planarity is achieved more easily and increasing production yield.
3Manufacturing precision
If the protruding pillar and flange structure with adjustable gap is used, then the assembly accuracy and production yield increase, but the device structure becomes more complex
Solution Approach 1:
The patent segments the assembly system into distinct functional modules: the board with protruding pillar, the flange with through hole, and the adjustable gap space. This segmentation allows each component to perform its specific function independently while contributing to the overall co-planarity achievement, making the complexity manageable and beneficial.
Data Source
AI summary
A display device includes a frame and a display module. The frame includes a board and a protruding pillar, wherein the board has an outer surface and an inner surface, and the protruding pillar is disposed on the inner surface. The display module has a display surface surrounded by the board and a supporting case. The supporting case has a flange facing the inner surface of the board, wherein the flange has a through hole, and the protruding pillar passes through the through hole and is directly or indirectly connected to the flange. A gap between the flange and the inner surface is adjustable to make the display surface and the outer surface of the board be coplanar.