Wavelength-Matched RGB Emitters for Compact High-Resolution Pixels
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display devices face challenges in achieving high resolution while efficiently managing light emitting elements with different wavelengths, leading to limitations in color accuracy and pixel density.
Innovation Solution
A display device design featuring a bank layer on a substrate with multiple alignment electrodes and light emitting elements emitting distinct colors, where the length and spacing of these elements are optimized to align with specific wavelengths, and an anchor portion with organic insulating material is used to secure the light emitting elements, allowing for precise alignment and efficient light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple light emitting elements with different wavelengths are arranged in a pixel, then color accuracy is improved, but pixel area increases reducing resolution
Solution Approach 1:
The patent applies local quality by making each light emitting element's length correspond to its specific wavelength characteristics. Red light emitting elements have different lengths than green or blue elements, optimizing each element's light emission efficiency for its particular wavelength while maintaining compact pixel dimensions.
2Use of energy by moving object
If light emitting elements are made longer to improve light emission efficiency, then light emission efficiency is improved, but pixel area increases
Solution Approach 1:
The patent changes the parameter of light emitting element length according to the specific wavelength requirements. By optimizing each element's length to match its wavelength characteristics rather than using uniform lengths, the patent achieves efficient light emission while controlling overall pixel area.
3Manufacturing precision
If alignment electrodes are added to ensure precise positioning, then alignment precision is improved, but device complexity increases
Solution Approach 1:
The patent introduces alignment electrodes as intermediary components between the substrate and light emitting elements. These electrodes serve as positioning mediators that guide and secure the light emitting elements in their correct positions, achieving precise alignment while maintaining a relatively simple overall structure.
Data Source
AI summary
A display device includes a bank layer disposed on a substrate and defining an emission area, a first to sixth alignment electrodes, each disposed on the substrate extending across the emission area, spaced apart from each other, and sequentially arranged in a direction, a first light emitting element disposed between the first alignment electrode and the second alignment electrode in the emission area and emitting first light, a second light emitting element disposed between the third alignment electrode and the fourth alignment electrode in the emission area and emitting second light, and a third light emitting element disposed between the fifth alignment electrode and the sixth alignment electrode in the emission area and emitting third light. Wavelengths of the first light, the second light, and the third light are different from each other.