Backlight Module Light Intensity Splitting Component
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Solution Overview
Problem
Conventional backlight modules face challenges in guiding light rays from point or line light sources into uniform surface light sources, often requiring costly light guide plates and experiencing significant light loss during propagation.
Innovation Solution
The use of a plate-shaped light intensity splitting component and a reflecting sheet, arranged oppositely to form an empty light guide space, splits incident light into reflected and transmission light, eliminating the need for a light guide plate and enhancing light utilization efficiency by guiding light rays to exit uniformly as a surface light source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light guide plate is used to guide light rays from point or line light sources into uniform surface light sources, then the light distribution uniformity is improved, but the manufacturing cost increases and light loss during propagation occurs
Solution Approach 1:
The patent extracts and removes the light guide plate from the backlight module structure, replacing it with a reflective sheet and light intensity splitting component arrangement. This eliminates the need for the light guide plate while achieving uniform light distribution through the empty light guide space configuration where light rays reflect off the reflective sheet and pass through the splitting component to exit uniformly from the light source side.
Solution Approach 2:
Instead of using a light guide plate to guide light through propagation (traditional approach), the patent inverts the approach by using an empty space with reflective and splitting components to redirect light. The light source side becomes the light exit side, and the reflective sheet faces the light source to bounce light into the empty space, creating uniform emergence without traditional light guiding materials.
2Illumination intensity
If a light guide plate is used to achieve uniform surface light source, then the light distribution is improved, but the manufacturing cost increases
Solution Approach 1:
The patent extracts and removes the light guide plate from the backlight module structure, replacing it with a reflective sheet and light intensity splitting component arrangement. This eliminates the need for the light guide plate while achieving uniform light distribution through the empty light guide space configuration where light rays reflect off the reflective sheet and pass through the splitting component to exit uniformly from the light source side.
Solution Approach 2:
The patent replaces the expensive light guide plate with simpler, more cost-effective components: a reflective sheet and a light intensity splitting component. These components are easier to manufacture and assemble, reducing overall manufacturing costs while achieving the same functional outcome of uniform light distribution.
3Reliability
If conventional backlight modules use traditional light guide plates, then the structure is established, but the device complexity and manufacturing complexity increase
Solution Approach 1:
The patent extracts and removes the light guide plate from the backlight module structure, replacing it with a reflective sheet and light intensity splitting component arrangement. This eliminates the need for the light guide plate while achieving uniform light distribution through the empty light guide space configuration where light rays reflect off the reflective sheet and pass through the splitting component to exit uniformly from the light source side.
Solution Approach 2:
The patent segments the light guiding function into separate components: a reflective sheet for bouncing light and a light intensity splitting component for distributing light. This segmentation allows each component to perform its specific function independently, simplifying the overall structure and making assembly and manufacturing easier compared to the integrated light guide plate.
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 configuration reduces manufacturing costs and increases light utilization efficiency by allowing light rays to exit uniformly as a surface light source, improving the performance of backlight modules without the need for traditional light guide plates.
Implementation Method 1
the plate-shaped light intensity splitting component is configured to split incident light from the light source into reflected light facing to the reflecting sheet and transmission light passing through the plate-shaped light intensity splitting component
Data Source
AI summary
A backlight module and a display device are provided. The backlight module includes a light source, a plate-shaped light intensity splitting component and a reflecting sheet, wherein, the plate-shaped light intensity splitting component and the reflecting sheet are oppositely arranged to form an empty light guide space therebetween, and the plate-shaped light intensity splitting component is configured to split incident light from the light source into reflected light facing to the reflecting sheet and transmission light passing through the plate-shaped light intensity splitting component. The backlight module without adopting a light guide plate can save cost for manufacturing the backlight module and is advantageous to improve light utilization efficiency.