Groove Housing Light Source Modules Backlight Unit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional back light units for LCD devices are limited by the use of T-pads, which reduce the number of light sources, decrease light efficiency due to optical gaps, and increase the thickness of the bezel, while also limiting design freedom and increasing costs.
Innovation Solution
A light source structure without a T-pad, featuring a light source mounting board with grooves for housing light source modules, allowing for increased light source density, reduced light leakage, and a thinner design, enabling more efficient light distribution and reduced bezel thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a T-pad is positioned between light source packages to suppress damage from thermal expansion, then reliability is improved, but the region where light source packages can be disposed is limited and light efficiency decreases due to optical gaps
Solution Approach 1:
The patent removes the T-pad component entirely from the system. Instead of using a T-pad to protect against thermal expansion, the invention uses a groove structure integrated into the light source mounting board that directly houses the light source modules, eliminating the need for an intermediate attenuator component and thereby removing the optical gap it creates.
Solution Approach 2:
The protective function previously performed by the separate T-pad component is merged into the groove structure of the light source mounting board. The groove both protects the light source modules from thermal expansion effects and eliminates the need for an intermediate component, combining protection and structural support functions in a single integrated feature.
2Reliability
If a T-pad is used as an attenuator between light source packages and light guide panel, then damage from thermal expansion is suppressed, but the total quantity of light of the back light unit is limited
Solution Approach 1:
The T-pad component is completely removed from the system. The groove structure in the light source mounting board directly houses the light source modules, allowing light to be transmitted without passing through an intermediate attenuator, thereby maximizing the total light quantity while still providing thermal expansion protection.
Solution Approach 2:
The invention transitions from using a planar T-pad attenuator to a three-dimensional groove structure that houses light source modules vertically. This dimensional change allows light to travel a shorter distance without passing through attenuating material, increasing the total light output while maintaining thermal protection functionality.
3Stability of the object's composition
If conventional light source packages with certain volume are used, then structural stability is maintained, but design freedom in disposing light sources is limited and bezel thickness increases
Solution Approach 1:
The invention segments the light source system into modular light source modules that can be independently disposed within the groove structure. This segmentation allows flexible arrangement of multiple small modules along the groove, providing design freedom while maintaining structural stability through the integrated groove housing.
Solution Approach 2:
The invention transitions from using large-volume conventional light source packages to small-volume modules disposed within a three-dimensional groove structure. This dimensional reorganization allows light sources to be arranged in a compact configuration that reduces bezel thickness while maintaining structural integrity through the groove's geometric constraints.
Data Source
AI summary
There is provided a back light unit including a light source module and a light source mounting board in which at least one groove is indented deeper than a thickness of the light source module and the light source modules are disposed within the groove.