Display Module Support-Stage Barrier Wall for Adhesive Overflow
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Solution Overview
Problem
The narrow frames of display devices lead to adhesive overflow during assembly, affecting the display effect due to refracted light in the display region, causing dark lines at the edges.
Innovation Solution
A display module design with a barrier wall on the support stage of the frame body to reduce adhesive overflow, ensuring the maximum width of the overflowed adhesive portion is less than the width of two valid sub-pixels, and using an optical adhesive layer with specific dimensions and shear resistance strength to maintain bonding strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a narrow frame design is adopted to increase screen area, then the display device achieves larger screen-to-frame ratio, but adhesive overflow occurs during assembly affecting display quality
Solution Approach 1:
The patent introduces a barrier wall as an intermediary structure between the support stage and display panel. This barrier wall serves as a physical mediator that confines the adhesive layer, preventing it from overflowing into the display region while still allowing the adhesive to properly bond the display panel to the frame body, thus resolving the contradiction between narrow frame design and adhesive positioning precision
Solution Approach 2:
The patent segments the bonding space by introducing a barrier wall that divides the area where adhesive can be applied. This segmentation creates a dedicated bonding zone separated from the display region, allowing adhesive to be applied generously without risking overflow into areas that would affect display quality, thereby resolving the contradiction between screen area and adhesive positioning precision
2Strength
If adhesive layer is applied to bond display panel and frame body, then bonding strength is achieved, but adhesive overflows into display region causing light refraction and dark lines
Solution Approach 1:
The barrier wall acts as an intermediary structure that physically separates the adhesive application zone from the display region. It allows the adhesive layer to achieve sufficient bonding strength within the confined space while preventing any adhesive from reaching the display region where it would cause light refraction and dark lines, thus resolving the contradiction between bonding strength and harmful optical effects
Solution Approach 2:
The patent extracts the potential harmful effect by removing the possibility of adhesive contact with the display region through the barrier wall. This extraction ensures that while adhesive is present in sufficient quantity to provide bonding strength, it is completely separated from the display area, eliminating light refraction and dark line issues
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
Reduces adhesive overflow, minimizing light refraction and dark lines, thereby improving the display effect by ensuring proper light emission from each pixel.
Implementation Method 1
The adhesive layer includes a first adhesive portion and a second adhesive portion, wherein the first adhesive portion is disposed between the barrier wall and the display panel and is bonded to the barrier wall and the display panel, the second adhesive portion is disposed between the support stage and the display panel and is bonded to the support stage and the display panel
Data Source
AI summary
Provided is a display module. The display module includes: a display panel; an adhesive layer; and a backlight module including a backlight source, a frame body, and an optical film, wherein the frame body includes a bearing stage, a support stage, and a barrier wall, wherein the bearing stage includes a bearing face configured to bear the optical film, the support stage is affixed to the bearing face, and the barrier wall is affixed to a face, facing away from the bearing face, of the support stage; wherein the adhesive layer includes a first adhesive portion and a second adhesive portion.