Light-Blocking Adhesive Tape for Display Panel Fixation
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Solution Overview
Problem
Transmission type display devices face issues with light leakage and the need for effective fixation of the backlight and liquid crystal panel to prevent such leakage and ensure proper display performance.
Innovation Solution
A display device design incorporating an adhesive tape with light-blocking properties is used to bond the liquid crystal panel and backlight together, preventing light leakage and ensuring secure fixation, which includes a frame-shaped light-blocking section to enclose the perimeter and a double-sided tape for additional bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a backlight and liquid crystal panel are fixed using conventional methods, then the structure is simple, but light leakage occurs and positional deviation happens
Solution Approach 1:
The adhesive tape is designed to perform multiple functions simultaneously: it bonds the backlight to the liquid crystal panel while also blocking light leakage. This multi-functional approach eliminates the need for separate fixation and light-blocking components, resolving the contradiction between reliability improvement and device complexity increase.
Solution Approach 2:
The patent combines the fixation function and light-blocking function into a single adhesive tape component. By merging these two functions that were previously handled by separate components, the solution achieves effective light leakage prevention without significantly increasing overall structural complexity.
2Strength
If adhesive tape is used to bond panel and backlight, then bonding strength increases, but the light blocking requirement must be met
Solution Approach 1:
The adhesive tape is engineered to provide both strong bonding and effective light blocking properties simultaneously. This multi-functional design ensures that the same component that secures the backlight to the panel also prevents light leakage, resolving the contradiction between strength improvement and harmful factor prevention.
Solution Approach 2:
The adhesive tape employs composite material construction combining adhesive layers for strong bonding with light-blocking layers or structures. This composite approach enables the single component to achieve both high bonding strength and effective light leakage prevention, addressing the contradiction between these two requirements.
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 solution effectively prevents light leakage, enhances the bonding strength between the panel and backlight, and improves impact resistance and reliability by ensuring no positional deviation between the panel and backlight, thus enhancing the overall display performance.
Implementation Method 1
an adhesive tape having a light blocking property and bonded to an end face of the liquid crystal panel
Data Source
AI summary
A display device includes a panel, a backlight, and an adhesive tape. The backlight is placed under the panel. The adhesive tape has a light blocking property and is bonded to an end face of the panel and the backlight.