Under-Display Optical Area Layout With Shield Openings
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Solution Overview
Problem
Display devices with integrated optical electronic devices face challenges in maintaining a reduced bezel size and avoiding notches or holes in the display area due to the need for light reception, which can compromise display quality and design flexibility.
Innovation Solution
A display panel design with optical electronic devices positioned under the display area, utilizing a lower shield metal with openings to prevent damage to non-transmission area components during cathode patterning and maintain display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If an optical electronic device is located in the front portion of the display device to receive incident light, then the light reception function is improved, but the bezel size increases or notches/holes are formed in the display area
Solution Approach 1:
The patent moves the optical electronic device from the front surface (2D plane) to the back surface of the display panel, utilizing the third dimension (depth) to resolve the conflict between light reception and display area. This allows the optical device to receive light through the display panel without occupying front surface space or requiring notches/holes.
Solution Approach 2:
The display panel itself acts as an intermediary medium, allowing light to pass through it to reach the optical electronic device on the back surface. This mediator enables the optical device to function without being exposed on the front surface, thereby maintaining the display area integrity.
2Reliability
If a lower shield metal is disposed under components in the non-transmission area to prevent damage during cathode patterning, then component protection is improved, but abnormal image display occurs
Solution Approach 1:
The patent removes the lower shield metal from the non-transmission area where it causes display abnormalities, while retaining it in other areas where it provides necessary protection. This selective extraction eliminates the harmful effect on display quality while preserving the protective function where needed.
Solution Approach 2:
The lower shield metal is selectively disposed only in specific areas (transmission areas or areas not overlapping with subpixels) rather than uniformly across the entire panel. This local placement ensures component protection in critical areas while avoiding interference with light transmission and display quality in optical areas.
Data Source
AI summary
A display device is disclosed. The display device comprises a display panel including an optical area and a normal area in a display area, and an optical electronic device overlapping at least a portion of the optical area. Two or more subpixels and a lower shield metal may be disposed in a non-transmission area between adjacent transmission areas in the optical area. In the non-transmission area of the optical area, the lower shield metal may include at least one opening overlapping all or a portion of a specific transistor among two or more transistors included in each of the two or more subpixels disposed in the non-transmission area in the optical area.