Backlight Module Bottom-Installed Holder Design
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Solution Overview
Problem
Current backlight modules for LCDs, particularly those using edge lighting, require complex installation processes and lack convenience in replacing the light source, which complicates maintenance and increases costs due to the need for a large work platform and structural strength conflicts.
Innovation Solution
A bottom-installed backlight module design featuring a frame, optical element, bottom plate, holder, and light source, where the holder engages perpendicularly with the frame and bottom plate, allowing for easy installation and removal of the light source, and incorporating light-reflective coatings to direct light effectively into a guide light plate, using materials like polyacrylate to reduce current leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If edge lighting is used for backlight module, then weight is reduced, but installation complexity increases and light source replacement becomes difficult
Solution Approach 1:
The backlight module is divided into separate functional components: a removable holder containing the light source, a frame, a bottom plate, and optical elements. This segmentation allows the light source to be independently replaced without affecting other components, solving the installation complexity issue while maintaining the lightweight edge lighting design.
Solution Approach 2:
The holder is designed with dynamic engagement features including guide slots in the frame and corresponding guide protrusions on the holder, along with elastic components that provide automatic locking and releasing mechanisms. This enables easy insertion and removal of the light source holder without complex tools or procedures.
2Strength
If conventional back installing method is used, then structural strength is maintained, but work platform size increases and installation convenience decreases
Solution Approach 1:
The design transitions from traditional back-installing methods to a bottom-installing approach where the holder engages with the frame from below through the bottom plate. This dimensional change allows for a more compact work platform and simpler installation process while maintaining structural integrity through the frame's guide slots and engagement features.
3Reliability
If light source is firmly fixed in backlight module, then reliability is improved, but replacement speed decreases
Solution Approach 1:
The holder employs elastic components including springs and elastic lugs that provide dynamic locking and releasing mechanisms. These components ensure reliable fixation during normal operation while allowing rapid release when replacement is needed, achieving both reliability and fast replacement through the interplay of elastic forces and mechanical engagement features.
Solution Approach 2:
The holder acts as an intermediary component between the light source and the frame, providing a removable interface that combines secure fixation with easy release. The guide slots and guide protrusions mediate the connection, ensuring proper alignment and reliable attachment while enabling quick removal through the elastic release mechanism.
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 simplifies the installation and replacement of the light source, enhances light directionality, and reduces power consumption while extending the usage life of the backlight module, with measured improvements in brightness and current efficiency compared to conventional modules.
Implementation Method 1
the light-reflective coating layer disposed on the accommodation space, the upper and side of inner edge of the frame, and within the holder. The reflection of light source emitted may be more effectively directed into the light guide plate by the light-reflective coating layer
Data Source
AI summary
A backlight module includes a frame, an optical element, a bottom plate, a holder, and a light source. The optical elements are located on the frame and a space between the sidewall of the frame and the optical elements. The bottom plate located under the optical elements. The light source is on the holder inserted into the space, The holder is inserted into the space along the direction toward the bottom surface of the bottom plate, and is removed from the space along the opposing direction.