Light Emitting Assembly Reflector Angle Optimization
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Solution Overview
Problem
Conventional liquid crystal displays (LCDs) face issues with non-uniform brightness due to the constant 120° light emission angle of LEDs, leading to low light utilization and uneven illumination, as they cannot effectively utilize the larger light exit angle, resulting in one side being brighter and the other side darker.
Innovation Solution
A light emitting assembly comprising a light emitting body and a reflector with a reflective surface that deviates the direction of light emission, forming a reflected light beam to compensate the second light, allowing for adjustable angle ranges to match specific application needs, such as an 80° angle range, thereby improving light utilization and uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If an LED with a constant 120° light emission angle is used, then the LED structure is simple and easy to manufacture, but the light utilization ratio is low and brightness uniformity is poor
Solution Approach 1:
A reflector is introduced as an intermediary component between the LED and the display panel. The reflector has a specific curvature radius that reflects light from the LED at different positions to the display panel, ensuring that light within a specific angle range (e.g., 80°) is effectively utilized while maintaining manufacturing simplicity
Solution Approach 2:
The curvature radius of the reflector is optimized to change the light emission angle from the constant 120° to a specific angle range (e.g., 80°). This parameter adjustment improves light utilization ratio and brightness uniformity without changing the LED itself
2Ease of manufacture
If an LED with a constant 120° light emission angle is used, then the LED structure is simple, but the brightness uniformity across the display is poor
Solution Approach 1:
The reflector acts as a mediator that redistributes light from the LED. By optimizing the curvature radius, it ensures uniform light distribution across the display panel, improving brightness uniformity while keeping the LED structure simple
Solution Approach 2:
The reflector introduces a new spatial dimension for light control by using its curved surface to redirect light at specific angles. This dimensional approach to light management improves uniformity without complicating the LED structure
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
The solution enhances light utilization and uniformity in LCDs by adjusting the light emission angle to meet specific requirements, reducing the brightness difference between sides and optimizing the light output for better display performance.
Implementation Method 1
the reflector comprises a reflective surface for reflecting the first light emitted by the light emitting body to form a reflected light beam
Data Source
AI summary
Embodiments of the present disclosure provide a light emitting assembly, a light bar, a backlight module, a display module and a transparent display module. The light emitting assembly includes a light emitting body and a reflector provided at a side of the light emitting body. The light emitting body is configured to emit first light and second light, the reflector includes a reflective surface for reflecting the first light emitted by the light emitting body to form a reflected light beam, the reflected light beam compensating the second light emitted by the light emitting body. A direction of the first light is deviated from a direction of the second light, and each of the first light and the second light has a non-zero angle range.