Display Sensor Hole Wiring for Continuous Touch Sensing
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Solution Overview
Problem
Display devices with integrated sensors, such as cameras, in a notch area face challenges in maximizing the display area due to the presence of dead space, which affects the overall usability and aesthetics.
Innovation Solution
A display device design that incorporates a hole in the display area for sensor placement, with an input sensing unit featuring detection electrodes and connection wirings that allow for seamless electrical connections across the hole, ensuring continuous input sensing functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If sensors are disposed on the side of the display device, then the display area is reduced due to dead space, but the manufacturing process is simpler
Solution Approach 1:
The invention moves the sensor placement from the side of the display device to within the display area itself, utilizing the vertical dimension and creating a hole through the display panel to accommodate sensors. This dimensional change eliminates dead space and maximizes the effective display area while maintaining sensor functionality.
Solution Approach 2:
The sensor is nested within the display structure by creating a hole through the display panel and placing the sensor in that hole. The input sensing unit is integrated into the display layers, with detection electrodes and connection wirings embedded within the existing display architecture, effectively nesting the sensor system within the display device.
2Area of stationary object
If a hole is formed in the display area for sensor placement, then dead space is minimized, but the manufacturing precision requirements increase
Solution Approach 1:
The display panel is segmented into multiple layers (first substrate, second substrate, display element layer, sealing member) with the hole formed through specific layers. The connection wirings are segmented into different sections (first connection wiring, second connection wiring) that connect to different detection electrodes, allowing for modular manufacturing and alignment at each stage rather than requiring perfect overall alignment.
Solution Approach 2:
The hole is formed in the display panel before final assembly, and the connection wirings are pre-positioned and connected to detection electrodes during the manufacturing process. The detection electrodes are pre-patterned on the substrate, and the hole formation is performed as a preliminary step that facilitates subsequent sensor installation without compromising final alignment.
3Adaptability or versatility
If detection electrodes are spaced apart by the hole, then sensor integration is enabled, but electrical connection complexity increases
Solution Approach 1:
Connection wirings act as intermediaries that bridge the gap created by the hole, electrically connecting detection electrodes that are spaced apart. The first connection wiring connects one set of detection electrodes, while the second connection wiring connects another set, with both types of connection wirings working together to maintain electrical continuity across the hole region.
Solution Approach 2:
The connection wirings serve multiple functions: they electrically connect detection electrodes spaced apart by the hole, provide structural support in the hole region, and maintain the integrity of the input sensing unit. The same connection wiring structure handles both electrical conduction and mechanical stabilization purposes.
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
The design minimizes dead space by allowing sensors to be integrated within the display area, maintaining full image display and enhancing user interaction capabilities.
Implementation Method 1
detection electrodes which are disposed on the sensing area
Implementation Method 2
a first connection wiring which is disposed on the adjacent area and electrically connects detection electrodes spaced apart by the second hole among the detection electrodes
Data Source
AI summary
A display device includes a display unit having a display area with a first hole formed therein, and an input sensing unit which is disposed on the display unit and having a second hole corresponding to the first hole. the input sensing unit includes a base layer which includes: an adjacent area adjacent to the second hole; and a sensing area overlapping the display area, detection electrodes disposed on the sensing area; and a first connection wiring disposed on the adjacent area and that electrically connects at least two detection electrodes spaced apart by the second hole, disposed at respective sides of the second hole. The display unit includes dams disposed adjacent to the first hole, each of the dams forming a closed loop along edges of the first hole. The first connection wiring overlaps at least one of the dams.