Pixel Electrode Layout for Efficient Multi-Emitter Displays
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Solution Overview
Problem
Current display technologies face challenges in enhancing the light emission efficiency of light emitting elements in display devices, which affects the overall performance and efficiency of information displays.
Innovation Solution
A pixel design is introduced, featuring a specific arrangement of electrodes and light emitting elements, where multiple light emitting elements are connected in series and parallel configurations, with intermediate electrodes facilitating electrical connections, to improve light emission efficiency and reduce the impact of element failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If multiple light emitting elements are connected in series and parallel configurations, then light emission efficiency is improved, but device complexity increases
Solution Approach 1:
The pixel is divided into multiple light emitting elements (first, second, and third light emitting elements) that are independently connected between different electrodes. This segmentation allows each element to contribute to light emission, improving overall efficiency while distributing the functional load across multiple components rather than relying on a single element
Solution Approach 2:
The patent introduces intermediate electrodes (first intermediate electrode and second intermediate electrode) that extend in the third direction (vertical dimension) to establish electrical connections between light emitting elements arranged in the first direction (horizontal dimension). This dimensional approach simplifies the routing complexity by using vertical interconnections rather than complex horizontal wiring
2Loss of energy
If intermediate electrodes are used to facilitate electrical connections, then light emission efficiency is improved, but manufacturing precision requirements increase
Solution Approach 1:
The intermediate electrodes are designed to establish reliable electrical connections between the light emitting elements and the contact electrodes. By creating equipotential regions through these intermediate structures, the patent ensures stable electrical contact that compensates for minor manufacturing variations, reducing the stringency of precision requirements
3Reliability
If light emitting elements are arranged in series and parallel configurations, then reliability is improved, but device complexity increases
Solution Approach 1:
The pixel contains multiple light emitting elements (first, second, and third light emitting elements) connected in a combination of series and parallel configurations. This segmentation ensures that if one element fails, others can continue to function, improving reliability through redundancy while distributing the electrical load across multiple pathways
Solution Approach 2:
Intermediate electrodes serve as mediator structures that facilitate electrical connections between the light emitting elements and the external circuitry. These intermediate structures simplify the overall device architecture by providing dedicated connection points, reducing the complexity of direct inter-element wiring while maintaining reliable electrical pathways
Data Source
AI summary
A display device includes a pixel, which includes at least one first light emitting element disposed between a first electrode and a second electrode; at least one second light emitting element disposed between a second electrode and a third electrode; at least one third light emitting element disposed between a third electrode and a fourth electrode; a first intermediate electrode disposed on the second electrode and electrically connected to the at least one first light emitting element and the at least one second light emitting element; and a second intermediate electrode disposed on the fourth electrode and electrically connected to the at least one third light emitting elements. The first intermediate electrode and the second intermediate electrode are electrically connected to each other.