Under-Display Camera Groove and Antireflective Film Design
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Solution Overview
Problem
Existing display panels restrict the effective display area when attempting to create full screen and borderless products, as installation holes for hardware like cameras and buttons are typically placed outside the display area, limiting the available screen space.
Innovation Solution
A display panel design featuring a substrate, antireflective film, thin film transistor layer, and packaging layer with a groove on the packaging layer that extends to the antireflective film, allowing for increased display area by accommodating camera placement under the panel, and an antireflective film composed of specific layers (Al2O3, ZrO2, SiO2) for improved light transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If installation holes are disposed outside the effective display area, then hardware installation is simplified, but the effective display area is reduced
Solution Approach 1:
The patent moves the camera from a traditional side-mounted position to an under-display position by creating a groove structure that extends vertically through the packaging layer. This dimensional transition allows the camera to be positioned beneath the display area without compromising the display surface, thereby increasing the effective display area while maintaining hardware installation feasibility
Solution Approach 2:
The camera is nested within the groove structure formed in the packaging layer, allowing it to be accommodated within the display panel's thickness rather than protruding outward. This nesting approach enables the camera to be positioned within the panel structure itself, preserving the external display dimensions while providing space for hardware installation
2Area of stationary object
If a groove is formed in the packaging layer to accommodate camera under the display, then the display area is increased, but the structural integrity may be compromised
Solution Approach 1:
The groove is designed with specific dimensional characteristics (width, depth, and positioning) that are optimized to accommodate the camera while minimizing impact on the overall structural integrity. The groove extends only to a controlled depth within the packaging layer, maintaining sufficient material around the cavity to preserve strength and rigidity
Solution Approach 2:
The packaging layer is constructed using multiple material layers with different mechanical properties. The groove passes through these composite layers, and the surrounding materials provide structural support that compensates for the removed material, maintaining overall integrity while allowing the groove formation
3Reliability
If the antireflective film is optimized for light transmittance with specific layer structures, then imaging capability is improved, but the manufacturing process complexity increases
Solution Approach 1:
The antireflective film is designed with specific refractive index parameters and layer thicknesses that are optimized for light transmittance. By carefully controlling these parameters, the film achieves enhanced imaging capability through constructive and destructive interference of light waves, while the manufacturing process remains compatible with existing deposition techniques
4Illumination intensity
If the groove extends deeply to the antireflective film, then light transmittance is improved, but the manufacturing precision requirement increases
Solution Approach 1:
The groove formation process is designed to self-regulate its depth by utilizing the natural stopping point at the antireflective film interface. The groove extends downward until it reaches the antireflective film layer, at which point the process naturally terminates, providing self-limiting depth control that reduces the need for complex precision control mechanisms
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
This design enhances the display area, enabling a full screen experience while improving light transmittance and imaging capabilities, reducing process complexity and increasing productivity.
Implementation Method 1
an antireflective film... for improved light transmittance
Implementation Method 2
antireflective film composed of specific layers (Al2O3, ZrO2, SiO2) for improved light transmittance
Data Source
AI summary
The present invention relates to a display panel and a display device. On the one hand, the display panel disposes a groove, which forms on one side of a packaging layer of a display area away from a substrate, and extends downward to one side of an antireflective film facing a thin film transistor layer; and a camera is disposed on one side of the substrate away from the thin film transistor layer and is corresponding the groove, thereby reducing process flow, improving productivity and yield, and realizing a full screen. On the other hand, the present invention also adds an antireflective film to improve the light transmittance at the groove and avoid the phenomenon that the camera is difficult to image.