Display Module Camera Hole Blocking Layer Recess Design
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Solution Overview
Problem
The formation of protrusions on the glass cover plate due to a thick ring-shaped blocking structure leads to air bubbles between the optically clear adhesive and the cover plate when combined with the display panel, affecting the display effect of display modules.
Innovation Solution
A recess is defined in the display panel to create a receiving hole that accommodates a ring-shaped blocking layer, ensuring its depth is greater than or equal to the thickness and diameter is greater than or equal to the camera hole, preventing the blocking layer from protruding and reducing air bubble formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a thick ring-shaped blocking layer is provided on the glass cover plate to block light leakage from the camera hole, then light blocking effect is improved, but protrusions are formed causing air bubbles between the OCA and cover plate
Solution Approach 1:
The ring-shaped blocking layer is nested within a receiving hole formed in the display panel. The receiving hole has a depth greater than or equal to the thickness of the blocking layer, allowing the blocking layer to be contained within the cavity rather than protruding outward. This nesting structure prevents the blocking layer from creating surface protrusions that would cause air bubble formation during assembly.
Solution Approach 2:
The solution moves the blocking layer from a surface-level structure to a subsurface structure by creating a receiving hole with sufficient depth. This dimensional transition embeds the blocking layer within the panel thickness, eliminating surface protrusions while maintaining the light-blocking function.
2Illumination intensity
If a ring-shaped blocking layer is provided on the glass cover plate to block light leakage, then display appearance is improved, but the blocking layer protrudes affecting assembly quality
Solution Approach 1:
The blocking layer is nested within the receiving hole cavity, ensuring it does not protrude from the display panel surface. The receiving hole dimensions are controlled to accommodate the blocking layer completely, maintaining smooth surface geometry for high-quality assembly.
Solution Approach 2:
The receiving hole is pre-formed in the display panel before the blocking layer is applied. This preliminary preparation ensures that when the blocking layer is placed in the receiving hole, it will be properly contained without protruding, thereby guaranteeing assembly quality from the outset.
3Object-affected harmful factors
If the blocking layer thickness is increased to improve light blocking, then light leakage prevention is improved, but air bubble generation increases
Solution Approach 1:
The receiving hole provides a cavity that completely contains the blocking layer, regardless of its thickness. The depth of the receiving hole is designed to be greater than or equal to the blocking layer thickness, allowing thicker blocking layers to be used for improved light blocking without creating surface protrusions that would trap air bubbles.
Data Source
AI summary
A display module and a display device are provided. The display module is used in the display device having a camera lens, and the display module includes a display panel and a cover plate. A camera hole is defined in a position of the display panel corresponding to the camera lens. The cover plate is disposed on the display panel. A recess is defined in a side surface of the display panel to form a receiving hole which is disposed correspondingly to the camera hole. A ring-shaped blocking layer is disposed in the receiving hole to block a periphery of the camera hole.