Display Panel Organic-Layer Openings for Compact Electrode Connections
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Solution Overview
Problem
Existing display devices have significant dead space due to the connection portion between the common electrode and the voltage line, which occupies valuable space and affects the overall design and functionality.
Innovation Solution
The display device is designed with a reduced dead space by electrically connecting the second electrode and the voltage line through openings in the organic layer and insulating layers, allowing the trace lines to overlap these openings, thereby minimizing the physical space required for this connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a connection portion is provided between the common electrode and the voltage line, then electrical connection is achieved, but dead space increases
Solution Approach 1:
The patent transitions from a planar connection approach to a three-dimensional stacked architecture. The common electrode, insulating layer, and voltage line are arranged in vertical layers rather than requiring lateral space, thereby eliminating dead space while maintaining electrical connectivity through the stacked configuration
Solution Approach 2:
The patent introduces openings (through-holes) in the insulating layer that allow trace lines to pass through vertically. These openings enable electrical connection between the common electrode and voltage line without requiring additional lateral space, effectively utilizing the vertical dimension to eliminate dead space
2Reliability
If trace lines are routed around openings, then electrical connection is maintained, but trace line length increases
Solution Approach 1:
The patent enables trace lines to travel vertically through openings in the insulating layer rather than routing around them in the planar direction. This three-dimensional path through the stack significantly shortens the trace line length while maintaining electrical connection between components
Data Source
AI summary
A display device including: a display panel including a display region and a non-display region; and an input sensing unit on the display panel and including an active region and a peripheral region, the display panel includes: a base layer; a circuit element layer on the base layer and including a plurality of insulating layers and a voltage line on any of the insulating layers; and a display element layer including a pixel defining film and a light-emitting element, the light-emitting element includes: a first electrode; a second electrode opposite to the first electrode; and an organic layer between the first and second electrodes, the organic layer includes: a first portion overlapping the display region; and a second portion overlapping the non-display region, a first opening is formed in the second portion, and the second electrode and the voltage line are electrically connected to each other through the first opening.