LCD Shield Unit Fixing Structure for Thin Display Assembly
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Solution Overview
Problem
The existing liquid crystal display apparatus faces challenges in minimizing assembly defects, maintaining component distances, and preventing foreign material introduction, especially in thin designs where pressure and heat can cause light leakage and mura due to misalignment and overlapping components.
Innovation Solution
The proposed solution involves a liquid crystal display apparatus with a pem-nut and bolt fixing structure that secures the shield unit at a desired position, using a pad unit composed of a foam pad layer and a rigid layer to maintain component distances and absorb impacts, and a design that minimizes the bezel and foreign material introduction by optimizing the distance between components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If a shield unit with small thickness is used to realize a thin liquid crystal display apparatus, then the thickness of the display apparatus is reduced, but the shield unit cannot be accurately fixed at the designed position and components may overlap
Solution Approach 1:
The patent applies preliminary action by providing a fixing structure (screws or adhesives) that pre-secures the shield unit to the circuit unit at the designed position before assembly. This preliminary fixation prevents positional deviation during subsequent assembly processes, ensuring components maintain their intended spacing even in thin designs where margin for error is minimal.
Solution Approach 2:
The patent introduces an intermediary element (fixing structure including screws or adhesives) between the shield unit and circuit unit to achieve accurate positioning. This intermediary mechanism mediates the connection, allowing the thin shield unit to be securely attached at the precise designed location without requiring increased thickness for mechanical stability.
2Manufacturing precision
If a fixing structure such as a screw is used to accurately fix the shield unit, then positioning accuracy is improved, but pressure applied to the liquid crystal display apparatus causes change in distance between components and damage
Solution Approach 1:
The patent applies parameter changes by offering multiple fixing methods (screws or adhesives) with different mechanical properties. The adhesive option provides a softer, more compliant fixing mechanism that distributes pressure evenly and accommodates thermal expansion without causing component damage, while still achieving accurate positioning. This parameter variation allows selection based on specific assembly requirements.
Solution Approach 2:
The patent applies beforehand cushioning by using adhesives that provide shock absorption and stress distribution capabilities. The adhesive layer acts as a cushioning element that prevents concentrated pressure points from damaging components during assembly and operation, while still maintaining the shield unit at the correct position.
3Ease of manufacture
If components are not accurately fixed at designed positions, then assembly is simplified, but components may be brought into undesired contact and assembly defects occur
Solution Approach 1:
The patent applies preliminary action by pre-providing fixing structures (screws or adhesives) that enable straightforward attachment of the shield unit to the circuit unit. This preliminary fixing step ensures components remain at their designed positions throughout assembly, preventing undesired contact and assembly defects while maintaining manufacturing simplicity.
Solution Approach 2:
The patent applies self-service by designing the fixing structure to be easily integrated into the assembly process. The screws or adhesives are positioned and configured to automatically guide component alignment and maintain proper spacing, allowing the assembly process to proceed smoothly without requiring complex positioning procedures or specialized skills.
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
This approach reduces assembly defects, maintains component reliability, minimizes light leakage, and enhances durability by ensuring accurate positioning and impact absorption, while preventing foreign material introduction and maintaining a thin profile.
Implementation Method 1
a pad unit composed of a foam pad layer and a rigid layer, a distance between the components can be secured and an impact of collision between the components can be relieved
Data Source
AI summary
Provided is a liquid crystal display apparatus according to an exemplary embodiment of the present disclosure. The liquid crystal display apparatus includes: a liquid crystal display panel; a first chassis; a second chassis; a circuit unit; a flexible substrate; a shield unit; and a pem-nut. The shield unit is disposed to surround at least a part of the flexible substrate and circuit unit and be bonded to at least a part of the flexible substrate. The pem-nut is exposed through a hole penetrating the shield unit and the circuit unit, and a bolt-insertion part is disposed. A top side of the pem-nut is positioned to be higher than a top side of the circuit unit. In the liquid crystal display apparatus according to an exemplary embodiment of the present disclosure, the reliability of the liquid crystal display apparatus is improved.