Sliding Display Power Bar Layout for Uniform Pixel Lighting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices face challenges in maintaining uniform lighting across different areas, particularly in flexible displays that undergo folding, bending, or sliding, leading to non-uniform illumination due to variations in power supply distribution.
Innovation Solution
The display device incorporates a power supply system with voltage bars, bridge parts, and lead-in portions that are strategically arranged to ensure uniform power distribution across the active areas, including a first power supply with voltage bars and bridge parts, and a second power supply with different voltage levels to drive pixels uniformly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional power supply structure is used in flexible displays, then the device can be folded or bent, but the lighting uniformity across the display area deteriorates
Solution Approach 1:
The power supply structure is segmented into multiple voltage bars (first voltage bar, second voltage bar, third voltage bar) positioned at different locations across the display panel. Each voltage bar independently supplies power to specific regions, allowing localized compensation for voltage drops and ensuring uniform lighting across the entire flexible display area even when folded or bent
Solution Approach 2:
Different regions of the display panel are provided with different power supply configurations tailored to their specific needs. The first voltage bar serves the first active area, the second voltage bar serves the second active area, and the third voltage bar serves the third active area. This local quality approach ensures that each region receives appropriate power voltage regardless of the display's flexible deformation state
2Illumination intensity
If voltage bars are positioned to cover all active areas, then lighting uniformity improves, but the device complexity increases
Solution Approach 1:
Each voltage bar is designed to serve multiple functions: providing power voltage to active areas, maintaining electrical insulation from adjacent voltage bars, and compensating for voltage drops in their respective regions. The bridge parts additionally provide electrical connection between voltage bars while maintaining insulation from active areas. This multi-functionality reduces the need for additional components, thereby limiting the increase in device complexity
Data Source
AI summary
A display device includes: a display panel including an active area to be slid in a first direction and a non-active area surrounding the active area; a plurality of pixels in the active area; and a first power supply to transfer a first power voltage to drive the plurality of pixels, wherein the active area includes: a first active area; and a second active area on one side of the first active area in the first direction and configured to be slid in the first direction, the first power supply includes: a first voltage bar on one side of the first active area in the non-active area in a second direction crossing the first direction; a second voltage bar spaced apart from one end of the first voltage bar in the first direction and on one side of the second active area in the non-active area in the second direction.