Display Panel Sensor Layout for Narrow-Bezel Light Emission
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Solution Overview
Problem
Existing display devices face challenges in expanding the light emitting area while minimizing the bezel area, which affects the overall display efficiency and user experience.
Innovation Solution
The display device incorporates a sensing sensor with first and second sensing electrodes and mesh lines that overlap the scan driving circuit, allowing for an expanded light emitting area without interfering with the light emission from pixels that overlap the circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the light emitting area is expanded, then the display area utilization is improved, but the bezel area width increases
Solution Approach 1:
The sensing lines are configured to extend in the first direction (horizontal) and the mesh lines in the second direction (vertical), creating a grid pattern that allows the sensing sensor to occupy space efficiently without blocking pixel light emission paths. This dimensional arrangement enables expanded light emitting area while maintaining sensing functionality.
Solution Approach 2:
The sensing lines and mesh lines are strategically positioned to overlap with the scan driving circuit in specific regions, allowing the sensing sensor to be placed in areas that do not interfere with pixel light emission. The lines are configured to surround or extend alongside light emitting areas rather than blocking them, achieving local optimization of both sensing and display functions.
2Adaptability or versatility
If the sensing sensor is added to the display panel, then the functionality is improved, but the device complexity increases
Solution Approach 1:
The sensing sensor is integrated directly onto the display panel substrate, merging the sensing functionality with the existing display structure. The sensing lines and mesh lines are formed using the same or similar fabrication processes as the display panel circuits, combining multiple functions into a single integrated device rather than adding separate components.
Solution Approach 2:
The display panel structure serves dual purposes: it functions as both the display medium and the sensing substrate. The same substrate that supports pixel light emitting areas also accommodates the sensing lines and mesh lines, allowing the device to perform both display and sensing functions without requiring separate dedicated components.
3Area of stationary object
If the sensing lines overlap the scan driving circuit, then the display area is expanded, but the light emission from pixels may be obstructed
Solution Approach 1:
The sensing lines are segmented into distinct patterns (first sensing lines extending horizontally, mesh lines extending vertically) that are configured to surround or extend alongside light emitting areas rather than block them. This segmentation allows the sensing lines to be positioned in the scan driving circuit area without interfering with pixel light emission paths.
Solution Approach 2:
The mesh lines act as intermediaries that connect sensing electrodes while being configured to extend in directions that avoid blocking light emission. The lines are positioned to provide electrical connectivity for sensing while serving as optical spacers or guides that do not obstruct light paths from pixels to the display surface.
Data Source
AI summary
A display device includes: a display panel including an active area and a peripheral area adjacent to the active area and including a plurality of pixels overlapping the active area and a scan driving circuit overlapping a portion of each of the active area and the peripheral area. The scan driving circuit is configured to drive the plurality of pixels. A sensing sensor is disposed on the display panel and includes first sensing electrodes and second sensing electrodes overlapping the active area and insulated from each other and sensing lines connected to the first sensing electrodes and the second sensing electrodes. The plurality of pixels include: first pixels that do not overlap the scan driving circuit; and second pixels that overlap the scan driving circuit, wherein at least a portion of the sensing lines overlaps the scan driving circuit.