Backlight Assembly Stepped Light Sources Reflector
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Solution Overview
Problem
Conventional liquid crystal display apparatuses face challenges with weight increase due to the backlight assembly and non-uniform light distribution, particularly when the light source is positioned on one side of the light guiding plate.
Innovation Solution
A backlight assembly design featuring a receiving container with a light exiting boundary, supported by a first light source and a reflector that extends from the light source supporting part, incorporating multiple light sources in a stepped configuration and a bent reflector to guide light uniformly across the light exiting boundary, eliminating the need for a traditional light guiding plate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a traditional light guiding plate is used in the backlight assembly, then light can be guided to the display panel, but the weight of the display apparatus increases
Solution Approach 1:
The patent extracts and removes the light guiding plate from the backlight assembly structure. Instead of using a separate light guiding plate component, the invention integrates light guidance functionality directly into the reflector structure, eliminating the need for the additional weight of a dedicated light guiding plate while maintaining the light guidance function to the display panel
Solution Approach 2:
The patent merges the light guidance function with the reflector structure. The reflector is designed to both reflect light from the light sources and guide the light toward the light exiting boundary, combining two previously separate functions (light reflection and light guidance) into a single integrated component, thereby reducing overall assembly weight
2Device complexity
If the light source is disposed at one side of the light guiding plate, then the structure is simplified, but the light distribution becomes non-uniform
Solution Approach 1:
The patent transitions from a one-dimensional light source arrangement (single side) to a two-dimensional stepped configuration with light sources positioned at different depths and locations. The first light source is disposed at a first depth from the light exiting boundary, while the second light source is disposed at a second depth greater than the first depth, creating a multi-dimensional light distribution pattern that achieves uniform illumination across the display panel
Solution Approach 2:
The patent applies different spatial positions and depths for different light sources to optimize local light distribution. The first light source and second light source are positioned at different depths and lateral positions, with each light source contributing to specific regions of the light exiting boundary, ensuring uniform overall illumination while maintaining structural simplicity
3Illumination intensity
If multiple light sources are positioned at different depths, then uniform light distribution is achieved, but the light source supporting structure becomes more complex
Solution Approach 1:
The patent combines the light source supporting function with the reflector structure. The reflector serves dual purposes: reflecting light toward the light exiting boundary and providing structural support for the light sources at different depths. This integration eliminates the need for separate complex supporting structures while maintaining the multi-depth light source configuration for uniform illumination
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 design reduces the weight of the display apparatus while ensuring uniform light distribution to the display panel, enhancing portability and reducing power consumption.
Implementation Method 1
The reflector reflects the light from the first and second light sources to guide the light to the light exiting boundary
Data Source
AI summary
A backlight assembly including a container having a light exiting boundary, and a light source part. The container includes a first light source supporting part supporting first and second light sources, and a reflector extending from the first light source supporting part. The reflector reflects the light from the first and second light sources to guide the light to the light exiting boundary. The first light source is disposed under the light exiting boundary and generates the light. The second light source is spaced apart from the first light source in a first direction by a first distance. The first direction is substantially parallel with the light exiting boundary. The second light source is spaced apart from the light exiting boundary in a second direction by a first depth. The second direction is substantially perpendicular to the light exiting boundary.