Display Cover Light Blocking Frame and Anti-Glare Layer
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Solution Overview
Problem
Display devices suffer from light leakage through gaps in the cover structure, leading to degraded display quality due to the absence of light-blocking or light-absorbing features on the sides of the cover structure.
Innovation Solution
A cover structure comprising an anti-glare layer, a light blocking frame, an adhesive layer, and a light blocking coating layer, where the light blocking frame surrounds a receiving space and is in contact with the adhesive layer, and the light blocking coating layer is positioned between the light blocking frame and the anti-glare layer, effectively blocking or absorbing light to prevent leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the cover structure is simplified without light-blocking features, then the device complexity is reduced, but light leakage occurs leading to degraded display quality
Solution Approach 1:
The cover structure is divided into multiple functional layers: a cover glass layer, a light blocking frame layer with light-blocking material, and an adhesive layer. This segmentation allows each layer to perform its specific function - the cover glass provides structural protection, the light blocking frame prevents light leakage, and the adhesive bonds the layers together, thereby resolving the contradiction between simplicity and light leakage prevention.
Solution Approach 2:
A light blocking frame is introduced as an intermediary element between the cover glass and the display panel. This frame contains light-blocking material that intercepts light before it can leak through gaps, while the adhesive layer acts as another intermediary to securely bond the frame to the cover glass, effectively preventing light leakage without requiring complex redesign of the entire cover structure.
2Object-affected harmful factors
If a light blocking frame is added to prevent light leakage, then display quality is improved, but the device complexity increases
Solution Approach 1:
Light-blocking material is applied locally only in the regions where light leakage occurs - specifically within the light blocking frame structure that surrounds the display area. This local application of light-blocking properties allows the cover structure to maintain simplicity in non-critical areas while providing targeted light leakage prevention where needed, thus improving display quality without proportionally increasing overall device complexity.
Solution Approach 2:
The light blocking frame is constructed using composite materials - a frame structure made of structural material combined with light-blocking material (such as black adhesive or light-absorbing coating). This composite approach allows the frame to simultaneously provide structural support and light-blocking functionality, preventing light leakage while avoiding the need for separate complex components, thereby limiting the increase in 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 solution effectively prevents light leakage, thereby enhancing the display quality by ensuring that light is blocked or absorbed, eliminating the issue of poor display quality caused by light leakage from the gaps.
Implementation Method 1
the light blocking frame surrounds a receiving space... and the light blocking coating layer is positioned between the light blocking frame and the anti-glare layer, effectively blocking or absorbing light to prevent leakage
Data Source
AI summary
A display device includes a cover structure, a light guide plate, and a display panel. The cover structure includes an anti-glare layer, a light blocking frame, and an adhesive layer. The anti-glare layer has a display region and an non-display region. The light blocking frame surrounds a receiving space. An orthogonal projection of the light blocking frame on the anti-glare layer is located within the non-display region. An adhesive layer is located in the receiving space of the light blocking frame. The light guide plate is located on the surface of the adhesive layer facing away from the anti-glare layer. The display panel is adjacent to the light guide plate.