Round-Corner Display PCB Layout for Uniform Light Distribution
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Solution Overview
Problem
Existing display apparatuses with rounded corners face challenges in effectively radiating light to curved surfaces, leading to increased size and complexity due to the need for complex printed circuits and larger PCBs for local dimming capabilities.
Innovation Solution
The design incorporates a PCB with rounded ends and divided areas for light sources, allowing for local dimming while minimizing size and complexity by using flexible materials and separate PCBs for curved and flat areas, ensuring uniform light distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a complex printed circuit and larger PCB are used for local dimming capabilities in rounded corner displays, then light radiation to curved surfaces is improved, but device size and structural complexity increase
Solution Approach 1:
The PCB is divided into multiple independent sections, each with simplified circuitry tailored to specific display zones. The circuit board includes a first section for rounded corners with dedicated light sources and control circuits, and a second section for flat areas with different configuration, allowing localized optimization without complex overall structure
Solution Approach 2:
Different portions of the display apparatus receive different lighting configurations: rounded corners have dedicated light sources and control circuits optimized for curved surfaces, while flat areas use standard backlight configuration, allowing each region to have the quality appropriate for its specific geometry
2Adaptability or versatility
If a complex printed circuit and larger PCB are used for local dimming capabilities, then local dimming functionality is improved, but manufacturing complexity increases
Solution Approach 1:
The circuit board is segmented into modular sections that can be manufactured independently and assembled systematically. Each section has standardized connection points and simplified circuits, making the overall manufacturing process more manageable despite the advanced functionality
Solution Approach 2:
The PCB is designed with pre-configured sections for different display areas, allowing manufacturers to prepare and test individual modules before final assembly. The first section for rounded corners and second section for flat areas are designed as ready-to-install units
3Illumination intensity
If light sources are arranged to radiate light to rounded corners, then uniform light distribution is improved, but PCB size increases
Solution Approach 1:
Light sources are strategically positioned only where needed - concentrated in the first section for rounded corners to achieve uniform distribution in curved areas, while the second section for flat areas uses standard spacing, optimizing light coverage without expanding overall PCB area unnecessarily
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 approach enables efficient light radiation to rounded corners, maintains a slim design, and facilitates easier installation and manufacturing, enhancing the display apparatus's aesthetics and functionality.
Implementation Method 1
a light guide plate (50) disposed behind the display panel (10), and configured to diffuse light transferred from a light source and to transfer the diffused light to the display panel (10)
Data Source
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AI summary
A display apparatus including a round portion is provided. The display apparatus includes: a display panel; a light guide plate configured to guide light toward the display panel, the light guide plate comprising a flat portion and a round portion; and a printed circuit board (PCB) including a first area configured to radiate light toward the round portion, and a second area configured to radiate light toward the flat portion, wherein a width of the first area is less than a width of the second area.