Inorganic LED Pixel Structure for Uniform Light Emission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Inorganic light emitting diode displays face challenges with low uniformity of light emission, yield, and reliability, particularly in electronic products such as smartphones and notebooks, where achieving high brightness and low power consumption while maintaining display quality is crucial.
Innovation Solution
A pixel structure for inorganic light emitting diodes is designed with uniformly spaced sub-pixels on an insulation substrate, incorporating specific transistor units, reference lines, data and scan lines, pixel electrodes, and power lines, where the first power line is positioned between adjacent sub-pixels, and the sub-pixels share a common power signal, ensuring equal gaps between power and reference lines to maintain uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional pixel structures are used, then device complexity is reduced, but uniformity of light emission deteriorates
Solution Approach 1:
The pixel structure is divided into multiple sub-pixels (first sub-pixel, second sub-pixel, etc.) with identical rows or columns, where each sub-pixel contains transistors and light emitting diodes. This segmentation allows independent control and optimization of each sub-pixel to achieve uniform light emission across the entire pixel structure.
Solution Approach 2:
Reference lines (first reference line, second reference line) are strategically positioned adjacent to specific boundaries of sub-pixels to provide localized reference potentials. This local quality approach ensures that each sub-pixel receives appropriate reference signals for uniform operation, addressing specific uniformity issues in different regions of the pixel structure.
2Manufacturing precision
If sub-pixels are arranged with equal gaps between power and reference lines, then uniformity of light emission is improved, but device complexity increases
Solution Approach 1:
The pixel structure employs an asymmetric layout where the first power line is positioned between sub-pixels while reference lines are placed adjacent to specific boundaries. This asymmetric arrangement creates equal gaps between power and reference lines, ensuring uniform electrical characteristics and light emission across all sub-pixels despite the increased layout complexity.
3Power
If multiple power lines are used for different sub-pixels, then power distribution is improved, but uniformity of light emission deteriorates
Solution Approach 1:
Multiple sub-pixels share a common first power line that provides the same potential signal to different sub-pixels. This merging approach ensures uniform power distribution and reference potentials across sub-pixels, eliminating variations in light emission that would arise from using separate power lines for each sub-pixel.
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
This configuration significantly improves the uniformity of light emission between sub-pixels, enhancing the display's brightness and reliability while maintaining low power consumption, addressing the existing issues of low yield and reliability.
Implementation Method 1
at least two first inorganic light emitting diodes, at least two second inorganic light emitting diodes
Implementation Method 2
each of the first inorganic light emitting diodes at least includes a first electrode, a second electrode and a first inorganic light emitting layer interposed between the first electrode and the second electrode
Data Source
AI summary
This disclosure provides a pixel structure of inorganic light emitting diode. A first power line is disposed between two adjacent first sub-pixel and second sub-pixel, and the first sub-pixel and second sub-pixel are electrically connected to the same first power line. Also, a first reference line is disposed on an opposite side of the first sub-pixel away from the second sub-pixel, and a second reference line is disposed on an opposite side of the second sub-pixel away from the first sub-pixel. The first sub-pixel and the second sub-pixel have substantially the same length.