Backlight Module Light Barrier Spacer Configuration
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Solution Overview
Problem
Conventional liquid crystal display apparatuses face challenges in miniaturization due to the thickness of the spacer in the mold frame, which is necessary for structural strength, leading to a relatively large total thickness and difficulty in reducing the size of the backlight module.
Innovation Solution
The design incorporates a light barrier with protruding supports that attach to the mold frame, allowing the spacer to be positioned below the light barrier, reducing the overall thickness by minimizing the spacer's height and distributing its support across multiple levels, and using a metal light barrier for enhanced light reflection and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a spacer of sufficient thickness is used in the mold frame to maintain structural strength, then the structural integrity is improved, but the total thickness of the backlight module increases
Solution Approach 1:
The mold frame is divided into a front frame and a rear frame that are positioned at different locations along the thickness direction. The spacer is segmented to provide support at multiple levels rather than as a single thick component. This segmentation allows the structure to maintain strength while reducing the overall thickness required in any single location.
Solution Approach 2:
Instead of relying solely on the thickness dimension to provide structural support, the invention distributes support across multiple positions in the length and width dimensions. The front frame and rear frame are positioned at different lateral locations, creating a distributed support structure that reduces the required spacer thickness while maintaining overall structural integrity.
2Length of moving object
If the spacer height is reduced to minimize total thickness, then the overall size is improved, but the structural support capability deteriorates
Solution Approach 1:
The support function is segmented between the spacer and the front frame structure. While the spacer height is reduced, the front frame provides additional support at a different location, ensuring that the overall support capability is maintained despite the thinner spacer.
Solution Approach 2:
The front frame acts as an intermediary support structure between the spacer and the external environment. It transfers and distributes the support function, allowing the spacer to be thinner while maintaining adequate support capability through the combined system.
3Ease of manufacture
If the mold frame structure is simplified to reduce complexity, then the manufacturing ease is improved, but the ability to maintain structural integrity with reduced thickness deteriorates
Solution Approach 1:
The mold frame is segmented into front frame and rear frame components that can be manufactured separately and assembled. This segmentation allows each component to be optimized for manufacturing while the assembly provides the distributed support structure needed to maintain integrity with reduced thickness.
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 effectively minimizes the total thickness of the backlight module while maintaining structural integrity and improving light utilization efficiency, enabling more compact liquid crystal display apparatuses.
Implementation Method 1
a light barrier attached to a lateral side of the light guide plate that is not the light incident side, the light barrier in contact with the light guide plate for blocking light propagation
Implementation Method 2
The light barrier includes at least one protruding support protruding away from an outer surface of the light barrier. Each of the at least one protruding support is configured to support one of the at least one spacer
Implementation Method 3
using a metal light barrier for enhanced light reflection and structural integrity
Data Source
Figure 1~2
Figure 3A~3B
Figure 4~5
AI summary
A backlight module including a light guide plate (1) having a light emitting side (S1) and a rear side (S2) opposite to the light emitting side (S1) and a plurality of lateral sides (S3,S3',S3'',S4,S5,S5',S5'') each of which connecting the light emitting side (S1) and the rear side (S2), at least a first side of the plurality of lateral sides is a light incident side (S4) configured to receive light from a light source, and at least a second side of the plurality of lateral sides (S3,S3',S3'',S5,S5',S5'') is not the light incident side；a light barrier (5) attached to the second side (S5,S5',S5'') and in contact with the second side for blocking light propagation, the light barrier (5) fixedly positioned relative to the light guide plate (1); and a mold frame (3) on a periphery of the light guide plate (1), the mold frame (3) having at least one spacer (31). The light barrier (5) includes at least one protruding support (51) protruding away from an outer surface of the light barrier (5), the outer surface being on a side of the light barrier (5) distal to the second side (S5,S5',S5'').