Display Device Subpixel Series Connection Voltage Loss
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Solution Overview
Problem
Display devices face challenges in minimizing voltage loss due to differences in operating voltage between various light-emitting elements in subpixels.
Innovation Solution
The display device incorporates a configuration where the number of series connections for light-emitting elements in subpixels varies, allowing for optimized voltage distribution and reduced loss across different light-emitting elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the number of series connections is made different according to light-emitting elements, then voltage loss is reduced, but device complexity increases
Solution Approach 1:
The patent applies local quality by configuring different numbers of series connections for light-emitting groups in different subpixels based on their specific operating voltage requirements. For example, subpixels with higher operating voltage requirements are configured with more series connections, while those with lower requirements have fewer series connections. This localized optimization reduces voltage loss in each specific region without uniformly increasing the complexity of the entire display device.
2Reliability
If series connections are optimized for each light-emitting element, then operating voltage matching is improved, but manufacturing complexity increases
Solution Approach 1:
The patent segments the display device into multiple subpixels, each with independently optimized series connections. By dividing the display into discrete subpixel units with specific configuration patterns, the patent achieves precise operating voltage matching for each light-emitting element type while maintaining standardized manufacturing processes for each segment. This segmentation allows for modular production and assembly, reducing overall manufacturing complexity despite the customized configurations.
Data Source
AI summary
A display device includes a first subpixel and a second subpixel, wherein the first subpixel includes a first light source unit including a plurality of first light-emitting elements configured to emit first light having a center wavelength of a first wavelength, the second subpixel includes a second light source unit including a plurality of second light-emitting elements configured to emit second light having a center wavelength of a second wavelength, the first light source unit includes first to nth light-emitting groups that are connected in series, each of the groups including the plurality of first light-emitting elements, the second light source unit includes first to mth light-emitting groups that are connected in series and each of the groups includes the plurality of second light-emitting elements, where n and m are natural numbers, and the second wavelength is different from the first wavelength.