Display Device Metal-Opening Encapsulation for Foreign-Substance Reduction
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Solution Overview
Problem
The installation of optical electronic devices such as cameras and detection sensors on the front surface of display devices necessitates a wider bezel or notches, compromising the display's transmittance and requiring additional processes to secure moisture prevention.
Innovation Solution
A display device design featuring a substrate with an opening area, display area, intermediate area, and insulating layer, including metal layers with openings and organic encapsulation, along with dams and dummy electrodes, to optimize the manufacturing process while reducing foreign substances and ensuring reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an undercut structure is formed around the channel hole to prevent moisture penetration, then reliability is improved, but manufacturing complexity increases due to additional processes
Solution Approach 1:
The patent applies preliminary action by forming the encapsulation layer to extend along the channel hole before the undercut structure is created. This preliminary extension of the encapsulation layer along the channel hole reduces the need for complex additional processes to form the undercut structure, while still achieving reliable moisture prevention at the channel hole.
2Adaptability or versatility
If the camera and detection sensor are installed on the front surface, then light reception function is improved, but the bezel width increases reducing display area
Solution Approach 1:
The patent applies dimensionality change by moving the camera and detection sensor from the front surface to the rear surface of the display device. This spatial reconfiguration allows the optical electronic devices to receive light through the display panel from the front while being physically located on the rear surface, thereby maintaining light reception functionality while preserving the front display area without notches or widened bezels.
3Adaptability or versatility
If the camera and detection sensor are installed on the front surface, then light reception function is improved, but transmittance of the display device deteriorates
Solution Approach 1:
The patent applies dimensionality change by relocating the camera and detection sensor to the rear surface of the display device. This allows light to transmit through the entire front display area without being blocked by physical openings, notches, or additional optical components on the front surface, thereby maintaining high display transmittance while preserving light reception functionality through the panel.
Data Source
AI summary
In a display device, a first metal layer which has an opening is located in an intermediate area between a display area and an opening area, and an organic encapsulation layer overlaps the opening of the first metal layer in at least a partial area. Therefore, it is possible to provide a display device capable of reducing foreign substances generated in the course of a process and thereby improving reliability.