Display Module Barrier Structure for Silicone Oil Contamination Control
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Solution Overview
Problem
Conventional cleaning methods fail to completely remove silicone oil residues from the glass cover of display modules, leading to reduced dyne level and adhesive failure due to contamination, which affects the bonding characteristics and reliability of display devices.
Innovation Solution
A barrier structure, such as a barrier block or slot, is introduced between the silicone glue and the side frame to prevent silicone oil diffusion and contamination of the ink layer, ensuring the dyne level requirements are met and adhesive strength is maintained.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional cleaning methods (plasma or alcohol wiping) are used to clean the glass cover surface, then foreign matter can be removed, but silicone oil residues remain and cause dyne level to drop below 36
Solution Approach 1:
The patent applies preliminary action by introducing a barrier structure (protrusion or recess) during the assembly process before bonding occurs. This barrier structure prevents silicone oil from reaching the ink layer surface in advance, eliminating the need for post-cleaning operations and ensuring the ink layer maintains adequate dyne level for reliable bonding.
2Strength
If silicone glue is used for adhesive bonding between display screen and glass cover, then bonding strength is achieved, but silicone oil precipitates and contaminates the ink layer surface
Solution Approach 1:
The patent applies segmentation by dividing the bonding structure into distinct regions: a bonding area where silicone glue is applied for strong adhesion, and a protected area where the ink layer is shielded by a barrier structure. This segmentation allows the silicone glue to perform its bonding function while preventing silicone oil migration to the ink layer surface.
Solution Approach 2:
The barrier structure (protrusion or recess) acts as an intermediary element between the silicone glue and the ink layer. It physically separates these two components, allowing the silicone glue to bond the display screen to the glass cover while preventing silicone oil from contaminating the ink layer surface.
3Manufacturing precision
If the ink layer surface is contaminated with silicone oil, then the dyne level decreases below 36, but adding barrier structures increases device complexity
Solution Approach 1:
The patent applies local quality by implementing a barrier structure only in the specific region where silicone oil contamination is most critical - near the bonding area. The barrier is localized rather than covering the entire device, thus preventing contamination of the ink layer while minimizing the increase in overall device 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 barrier structure effectively prevents silicone oil contamination, maintaining the dyne level and adhesive strength, thereby enhancing the reliability and performance of the display device.
Implementation Method 1
A barrier structure is provided in a display device, wherein the barrier structure is disposed between a silicone glue and a side frame of a display device, and the barrier structure is configured to block precipitation and diffusion of the silicone glue
Implementation Method 2
it will be dispersed in microscopic voids of the ink surface 13 through its capillary and other physical diffusion effects on the ink surface 13 where it is attached
Data Source
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AI summary
A display device is provided, which includes a middle frame, a first substrate, a second substrate, a cover plate, an ink layer, and a silicone glue. By providing a barrier block or a slot disposed on a side of the ink layer close to the first substrate, the barrier block is disposed between the silicone glue and a side frame to prevent the ink layer on the cover plate from spreading of a pollution source, so that a surface of the ink layer of a glass cover plate of a display module can meet dyne specification requirements. It also ensures an adhesive strength of the middle frame and the cover plate to prevent bonding failure.