Backlight Module Positioning Member Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing backlight modules face issues where the distance between the light guide plate and the backlight source is too large, leading to incomplete light reception by the light guide plate, reduced backlight efficiency, and increased assembly difficulties.
Innovation Solution
A backlight module design featuring a positioning member with a first and second positioning portion that engages to maintain a distance between the light guide plate and the backlight source within a threshold, ensuring precise assembly and optimal light reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the distance between the light guide plate and the backlight source is increased, then the assembly tolerance is relaxed, but the light guide plate cannot receive light completely and backlight efficiency is reduced
Solution Approach 1:
A positioning member is introduced as an intermediary component between the light guide plate and the backlight source. This positioning member includes a positioning portion that engages with the light guide plate and another portion that engages with the backlight source, mediating the distance control between these two components. The positioning member enables precise distance maintenance while facilitating assembly, thus resolving the contradiction between assembly tolerance and backlight efficiency.
2Loss of energy
If the distance between the light guide plate and the backlight source is decreased to improve light reception, then backlight efficiency is improved, but assembly precision requirements increase and assembly difficulty increases
Solution Approach 1:
The positioning member serves as a mediator that handles the precision positioning function, allowing the light guide plate and backlight source to be positioned accurately without requiring high assembly precision from the assembly process itself. The positioning member's engagement structures guide the components into the correct positions, reducing assembly difficulty while maintaining the optimal small distance for high backlight efficiency.
Solution Approach 2:
The positioning member is pre-designed with specific engagement structures (positioning portions) that automatically guide the light guide plate and backlight source into the correct relative positions during assembly. This preliminary design of positioning features performs the positioning action in advance, eliminating the need for complex assembly operations and high assembly precision requirements.
3Device complexity
If no positioning structure is used, then the device complexity is reduced, but the distance control between components deteriorates and backlight efficiency is reduced
Solution Approach 1:
A positioning member is introduced as an intermediary component between the light guide plate and the backlight source. This positioning member includes a positioning portion that engages with the light guide plate and another portion that engages with the backlight source, mediating the distance control between these two components. The positioning member enables precise distance maintenance while facilitating assembly, thus resolving the contradiction between assembly tolerance and backlight efficiency.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A backlight module (10, 20, 31) and an electronic device (30) are provided. When an optical assembly (12) is assembled, a first positioning portion (1213) and a second positioning portion (141) are cooperatively positioned to receive the optical assembly (12) within accommodating spaces (101, 201) via the backlight module (10, 20, 31), such that a distance between a light guide plate (121) and a backlight source (13) is less than or equal to a threshold value, preventing a circumstance from occurring during assembly in which the distance between the light guide plate (121) and the backlight source (13) is excessively large, causing the light guide plate (121) to not be able to completely receive light emitted by the backlight source (13). The backlight effect of the light guide plate (121) is thus improved, the assembly precision may be increased and assembly difficulty may be decreased.