Display Panel Adhesion via Support Elements
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Solution Overview
Problem
Automotive touch displays face challenges in adhering display panels to backlight modules due to the curing time of adhesives, which affects visual quality and parallelism, and existing solutions like double-sided tape either impair adhesion or require lengthy curing processes.
Innovation Solution
A display device design featuring a display panel set with a peripheral zone, a backlight module with a frame, and support elements on the frame in contact with adhesive material to enhance adhesion and reduce curing time, ensuring proper alignment and stability during manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If double-sided tape with wide adhesive width is used to affix display panel to backlight module, then adhesion strength is improved, but visual quality deteriorates due to visible adhesive
Solution Approach 1:
The support elements are divided into multiple discrete components (first support element, second support element, third support element, fourth support element) positioned at different locations around the peripheral zone. This segmentation allows the adhesive material to be distributed in smaller, less visible portions while collectively providing sufficient adhesion strength to match or exceed that of wide double-sided tape.
2Adaptability or versatility
If glue is used instead of double-sided tape to adhere components, then adhesion flexibility is improved, but curing time increases causing production delays
Solution Approach 1:
The support elements are pre-positioned on the backlight module before the adhesive material is applied. This preliminary positioning establishes a stable framework that maintains component alignment and reduces the required curing time, as the structure is already stabilized and less dependent on prolonged adhesive curing.
Solution Approach 2:
The support elements act as intermediary components between the display panel and the backlight module. They provide mechanical support and alignment while the adhesive material cures, effectively mediating the bonding process and reducing the time required for the adhesive to achieve sufficient strength.
3Strength
If glue is used for adhesion, then bonding capability is improved, but product stability deteriorates during curing due to external forces causing deviation
Solution Approach 1:
The support elements are installed before adhesive curing to preemptively counteract the effect of external forces. These support elements create a rigid framework that resists deviation and maintains parallelism between the display panel and backlight module during the curing process, preventing the stability issues that would otherwise occur.
4Strength
If glue is used without proper support, then adhesion is achieved, but manufacturing precision deteriorates due to poor parallelism affecting display quality
Solution Approach 1:
The support elements serve as intermediary structural components that maintain precise spacing and parallelism between the display panel set and the backlight module. By providing this mechanical framework, they ensure that the adhesive material cures with the correct geometry, achieving both strong adhesion and high manufacturing precision.
Data Source
AI summary
A display device is provided. The display device includes a display panel set having a peripheral zone, a backlight module including a frame, an adhesive material disposed between the peripheral zone of the display panel set and the frame, and a plurality of support elements disposed on the frame and in contact with the adhesive material.