Pixel Layout With Bridge Patterns for Reliable Light Emission
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Solution Overview
Problem
Current display devices face challenges in achieving reliable pixel performance due to limitations in sub-pixel configurations and electrical connections, which affect the efficiency and reliability of light emission.
Innovation Solution
A pixel configuration is proposed that includes a first sub-pixel, a second sub-pixel, and a third sub-pixel, each with a pixel circuit, alignment electrodes, a light emitting element, and bridge patterns electrically connected to storage capacitors, optimizing the electrical connections and layout to enhance reliability and light emission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sub-pixels are arranged in a conventional configuration with direct electrical connections, then the device complexity is reduced, but the reliability of pixel performance deteriorates due to connection limitations
Solution Approach 1:
The pixel is divided into three distinct sub-pixels (first, second, and third sub-pixels) with separate light emitting elements and independent electrical connections through bridge patterns. This segmentation allows each sub-pixel to be optimized independently while maintaining overall pixel reliability, as the bridge patterns provide dedicated electrical pathways that reduce connection limitations and improve signal integrity for each sub-pixel.
2Reliability
If bridge patterns are introduced to electrically connect storage capacitors with optimized layouts, then the reliability of electrical connections is improved, but the device complexity increases
Solution Approach 1:
The bridge patterns serve multiple functions: they electrically connect storage capacitors to the light emitting elements, provide optimized electrical pathways that reduce connection limitations, and maintain a structured layout that organizes the complex interconnections. This multi-functionality allows the bridge patterns to enhance connection reliability while managing the inherent complexity through unified design elements.
3Productivity
If sub-pixel arrangements are optimized for light emission efficiency, then the light emission efficiency is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The three sub-pixels are arranged in an asymmetric configuration where the first, second, and third sub-pixels have distinct positions and orientations within the pixel structure. This asymmetric arrangement optimizes light emission efficiency by allowing each sub-pixel to be positioned for optimal optical performance, while the bridge patterns provide structured electrical connections that help manage the precision requirements through consistent design patterns.
Data Source
AI summary
A pixel may include a first sub-pixel, a third sub-pixel, and a second sub-pixel arranged in a second direction, and each including an emission area and a non-emission area. Each of the first sub-pixel, the second sub-pixel, and the third sub-pixel may include a pixel circuit including at least one transistor and a storage capacitor, a first alignment electrode disposed on the pixel circuit, a second alignment electrode extending spaced apart from the first alignment electrode, a light emitting element disposed between the second alignment electrode and the first alignment electrode, and including a first end adjacent to the second alignment electrode and a second end adjacent to the first alignment electrode, and a bridge pattern spaced apart from the first alignment electrode and the second alignment electrode, and electrically connected to the storage capacitor.