Acute Corner Reflector for Liquid Crystal Display
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Solution Overview
Problem
Conventional liquid crystal display devices with acute angles suffer from dark corner portions, which reduce image quality and require increasing the number of LEDs, leading to material and power consumption issues.
Innovation Solution
A deformed liquid crystal display device with a triangular shape and a reflector having a brightness enhancing portion at the acute corner, which directs light uniformly to prevent dark corners and enhance brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the number of LEDs is increased to eliminate dark corners, then image quality is improved, but material cost and power consumption increase
Solution Approach 1:
The reflector is designed with different geometric characteristics at different locations: the acute corner region has a specific reflector configuration (with angle α between 60°-90°) that is optimized locally to enhance light distribution in the dark corner area, while other regions maintain standard reflector geometry. This local optimization eliminates the need to increase the overall number of LEDs.
Solution Approach 2:
The invention introduces a new geometric dimension by configuring the reflector with a specific angular relationship (angle α between 60°-90°) at the acute corner, rather than using a standard flat or perpendicular reflector surface. This angular configuration in the geometric dimension redirects light paths to illuminate the dark corner region effectively.
2Illumination intensity
If the number of LEDs is increased to eliminate dark corners, then image quality is improved, but power consumption increases
Solution Approach 1:
The reflector is designed with different geometric characteristics at different locations: the acute corner region has a specific reflector configuration (with angle α between 60°-90°) that is optimized locally to enhance light distribution in the dark corner area, while other regions maintain standard reflector geometry. This local optimization eliminates the need to increase the overall number of LEDs.
Solution Approach 2:
The invention introduces a new geometric dimension by configuring the reflector with a specific angular relationship (angle α between 60°-90°) at the acute corner, rather than using a standard flat or perpendicular reflector surface. This angular configuration in the geometric dimension redirects light paths to illuminate the dark corner region effectively.
3Ease of manufacture
If conventional reflector structure is used, then manufacturing is simple, but dark corner portions are generated reducing image quality
Solution Approach 1:
The reflector is designed with different geometric characteristics at different locations: the acute corner region has a specific reflector configuration (with angle α between 60°-90°) that is optimized locally to enhance light distribution in the dark corner area, while other regions maintain standard reflector geometry. This local optimization eliminates the need to increase the overall number of LEDs.
Solution Approach 2:
The invention introduces a new geometric dimension by configuring the reflector with a specific angular relationship (angle α between 60°-90°) at the acute corner, rather than using a standard flat or perpendicular reflector surface. This angular configuration in the geometric dimension redirects light paths to illuminate the dark corner region effectively.
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 prevents dark corner formation, maintains image quality without increasing LED count, and supports a lightweight, thin, and narrow bezel design, reducing material and power costs.
Implementation Method 1
a reflector comprising a bottom surface, and side portions bent upward from edges of the bottom surface
Implementation Method 2
a brightness enhancing portion is disposed at the corner having the acute angle
Implementation Method 3
a diffuser, disposed above and spaced apart from the plurality of LEDs and the bottom surface of the reflector
Data Source
AI summary
A deformed liquid crystal display device including a cover bottom; a backlight unit on the cover bottom; the backlight unit including: a LED assembly including a plurality of LEDs; a reflector comprising a bottom surface, and side portions bent upward from edges of the bottom surface; a diffuser, disposed above and spaced apart from the plurality of LEDs and the bottom surface of the reflector; a liquid crystal panel disposed on the backlight unit, wherein the reflector has at least one corner having an acute angle formed by two adjacent side portions, wherein a brightness enhancing portion is disposed at the corner having the acute angle.