Display Electrode Capacitor Layout for Uniform LED Alignment
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Solution Overview
Problem
Existing display devices face challenges in efficiently aligning light emitting elements between alignment wires due to noise components in the applied voltage, leading to non-uniform alignment and reduced manufacturing efficiency.
Innovation Solution
The implementation of capacitors under the electrodes to filter out alternating current and direct current noise components, creating a uniform electric field for precise alignment of light emitting elements, thereby improving alignment characteristics and display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If voltage is applied to alignment wires to align light emitting elements, then alignment function is achieved, but noise components cause non-uniform alignment
Solution Approach 1:
A capacitor is introduced as an intermediary component between the alignment wire and the light emitting elements. The capacitor filters out noise components (both AC and DC) from the applied voltage, allowing only the necessary alignment voltage to pass through. This mediator resolves the contradiction by blocking harmful noise while permitting the useful alignment function to operate effectively.
Solution Approach 2:
The invention converts the harmful noise components into a beneficial filtering function. By applying both AC and DC voltages to the capacitor, the noise is channeled through the capacitor's filtering action, transforming the harmful interference into a controlled signal that enhances alignment uniformity while eliminating non-uniform alignment issues.
2Manufacturing precision
If capacitors are added to filter noise, then alignment precision is improved, but device complexity increases
Solution Approach 1:
The capacitor serves multiple functions simultaneously: it filters AC noise, filters DC noise, and enables precise alignment of light emitting elements. By making the capacitor multi-functional, the invention achieves high alignment precision without requiring multiple separate components, thus limiting the increase in device complexity to a single versatile element rather than several specialized ones.
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 solution enhances the alignment of light emitting elements, resulting in improved manufacturing efficiency and display quality by ensuring uniform alignment and reducing noise interference.
Implementation Method 1
capacitors under the electrodes to filter out alternating current and direct current noise components
Implementation Method 2
creating a uniform electric field for precise alignment of light emitting elements
Implementation Method 3
The passivation layer may include an insulation material, and the first capacitor electrode and the first electrode may form a first capacitor
Data Source
AI summary
A display device and a manufacturing method of the display device are provided. A display device includes a conductive line disposed on a substrate, a first capacitor electrode disposed on the conductive line and electrically connected to the conductive line, a passivation layer disposed on the first capacitor electrode, a first electrode disposed on the passivation layer and at least partially overlapping the first capacitor electrode in a plan view, a second electrode spaced apart from the first electrode, the second electrode and the first electrode being disposed on a same layer, and light emitting elements disposed between the first electrode and the second electrode.