Display Sensor Holes and Signal Line Routing for Sensitivity
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Solution Overview
Problem
In modern portable electronic devices, the placement of sensors below the display can lead to impaired sensor sensitivity due to light distortion or attenuation by signal lines, and the formation of holes in the display reduces the available display area and compromises dustproofing.
Innovation Solution
The electronic device incorporates a support member with strategically positioned holes to accommodate sensors, allowing signal lines to be placed between these holes, thereby maintaining sensor sensitivity and display area while preventing dust infiltration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sensors are disposed below the display, then sensor integration is achieved, but sensor sensitivity is impaired due to light distortion or attenuation by signal lines
Solution Approach 1:
The display is divided into active display areas and non-active areas (including holes and regions between holes). Signal lines are routed through non-active areas and regions between holes, separating signal line paths from sensor light paths. This segmentation allows sensors to be disposed below the display while maintaining sensitivity by ensuring light from sensors does not pass through areas containing signal lines.
2Adaptability or versatility
If holes are formed in the display for sensors, then sensor placement is enabled, but the actual available display area is reduced
Solution Approach 1:
The invention utilizes the third dimension (depth/thickness) of the display structure by forming holes that extend through the display thickness. Sensors are positioned in the space below the display, accessible through these holes. This dimensional approach allows sensor integration without requiring lateral expansion of hole areas, thereby minimizing the impact on the two-dimensional display area.
Solution Approach 2:
The display is designed with heterogeneous regions: active display areas for visual output, hole regions for sensor access, and intermediate regions for signal line routing. Each region has optimized properties for its specific function, allowing the display to maintain high pixel density in active areas while providing dedicated pathways for sensors and signal lines without compromising overall display area.
3Adaptability or versatility
If the number of sensors is increased, then sensing capabilities are enhanced, but the number of holes in the display increases reducing display area and compromising dustproofing
Solution Approach 1:
The holes formed in the display serve multiple functions simultaneously: they provide light paths for sensors to detect external stimuli, allow routing of signal lines to connect sensors with the printed circuit board, and are sealed with sealing members to maintain dustproofing. This multi-functional design enables increased sensor count without proportionally increasing the negative impact on display area or dustproofing reliability.
Solution Approach 2:
Sealing members are introduced as intermediary components that fill the holes after sensor installation. These sealing members bridge the gap between the need for open holes (for sensor light paths and signal line routing) and the requirement for dustproofing. The sealing members prevent dust infiltration while allowing the holes to fulfill their sensor-related functions.
4Reliability
If signal lines are placed in the display area, then electrical connectivity is achieved, but light generated by sensors is distorted or attenuated
Solution Approach 1:
The display area is segmented into distinct zones: active display areas, hole regions, and intermediate regions. Signal lines are specifically routed through intermediate regions and hole regions, separating them from active display areas and sensor light paths. This spatial segmentation ensures that signal lines provide necessary electrical connectivity without interfering with light transmission from sensors.
Solution Approach 2:
Signal lines are extracted from the active display area and relocated to intermediate regions and hole regions. This extraction removes the source of light distortion and attenuation from the sensor light path, allowing signal lines to maintain electrical connectivity while no longer compromising sensor sensitivity.
Data Source
AI summary
An electronic device is disclosed, including: a printed circuit board, a first support member including a first surface and a second surface opposite to the first surface, the first support member defining a first hole formed through the first surface and the second surface, wherein the printed circuit board is coupled to the second surface, and a display coupled to the first surface of the first support member, the display defining: a second hole on a first side of the display to correspond to at least a portion of the first hole, and a third hole on a second side of the display opposite the first side, the third hole adjacent to the second hole and corresponding to the remaining portion of the first hole, wherein signal lines related to driving pixels of the display are disposed in an area between the second hole and the third hole, and wherein at least a partial area of the display is set as an active area configured to display a screen.