Display Wiring Layout for Under-Panel Sensor Light Shielding
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Solution Overview
Problem
Display apparatuses face challenges in minimizing the influence of external light, particularly due to the presence of bypass lines and components that can reflect or expose external light, affecting the functionality and image quality of integrated sensors and cameras.
Innovation Solution
The display apparatus incorporates a metal layer surrounding the transmission area, with strategically designed holes and an optical functional section to reduce external light exposure, along with an encapsulation member and inorganic insulating layers to manage light transmission and reflection effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bypass lines are placed in the first non-display area to maintain display functionality, then electrical connectivity is maintained, but external light reflection and exposure increase
Solution Approach 1:
A metal layer is introduced as an intermediary component between the bypass lines and the external environment. This metal layer strategically blocks and absorbs external light before it can reach and reflect from the bypass lines, while allowing electrical connectivity to be maintained through the bypass lines themselves
Solution Approach 2:
The metal layer is selectively positioned only in specific areas where light blocking is needed, rather than covering the entire display structure. This localized approach blocks external light from reaching bypass lines while maintaining transparency and light transmission in the display area
2Productivity
If the transmission area is enlarged to improve sensor and camera functionality, then light transmission increases, but external light influence and reflection increase
Solution Approach 1:
Different regions of the display structure are assigned different optical properties. The transmission area maintains high light transmission for sensor functionality, while surrounding areas incorporate metal layers with light-blocking properties to minimize external light influence
Solution Approach 2:
The metal layer acts as a mediator between the enlarged transmission area and external light sources, selectively blocking harmful external light while allowing the transmission area to maintain its light transmission capabilities for sensor operation
3Object-affected harmful factors
If metal layer is added to block external light, then external light reflection decreases, but device complexity increases
Solution Approach 1:
The metal layer serves multiple functions simultaneously: it blocks external light from reaching bypass lines, provides electrical connectivity pathways, and maintains structural integrity of the display device. This multi-functionality reduces the need for additional separate components
Solution Approach 2:
The metal layer is integrated into the existing display structure, combining light-blocking functionality with the electrical interconnect structure. This merging approach avoids adding separate light-blocking components that would increase 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
This configuration minimizes the impact of external light on the display apparatus, enhancing the performance of integrated sensors and cameras by reducing light reflection and exposure, while maintaining the functionality of the transmission area.
Implementation Method 1
a metal layer on the encapsulation member, overlapping the bypass lines, and including a first hole corresponding to the transmission area
Implementation Method 2
an encapsulation member that covers the display elements and the bypass lines
Data Source
AI summary
A display apparatus includes a substrate including a transmission area, a display area, and a first non-display area between the transmission area and the display area, a display layer including display elements and bypass lines, an encapsulation member that covers the display elements and the bypass lines, a metal layer on the encapsulation member, and including a first hole corresponding to the transmission area, and an optical functional section including a second hole corresponding to the transmission area, wherein a first perpendicular distance from a center line, which passes through a center of the transmission area and is perpendicular to an upper surface of the substrate, to an edge of the first hole may be less than a second perpendicular distance from the center line to an edge of the second hole.