LCD Light Guide Plate Positioning via Lower Cover Protrusions
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Solution Overview
Problem
The assembly of liquid crystal displays (LCDs) is hindered by the movement of the light guide plate, which can lead to erroneous assembly of the main support and potential damage to the lamp, due to the lack of precise positioning and fixation during the assembly process.
Innovation Solution
Incorporating guide protrusions on the lower cover that correspond with recesses on the light guide plate to ensure precise placement and fixation, preventing movement and damage, and eliminating the need for additional alignment operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the light guide plate is not fixed at the inner side of the lower cover before disposing the main support, then the assembling process allows flexibility in component placement, but the light guide plate may move causing damage to the lamp or erroneous assembly of the main support
Solution Approach 1:
The lower cover is designed with guide protrusions that engage with guide recesses on the light guide plate before the main support is assembled. This preliminary positioning action ensures the light guide plate is correctly positioned and prevented from moving during subsequent assembly steps, eliminating the need for separate alignment operations while preventing lamp damage.
2Manufacturing precision
If alignment operation is required to place the light guide plate at the designed position, then precise positioning can be achieved, but the assembling operation becomes less effective and more time-consuming
Solution Approach 1:
The guide protrusions on the lower cover and guide recesses on the light guide plate create a self-aligning mechanism. During assembly, the guide protrusions automatically guide the light guide plate into the correct position through the guide recesses, eliminating the need for separate alignment operations by workers and significantly improving assembly efficiency.
Solution Approach 2:
The guide protrusions and guide recesses act as intermediary elements that mediate between the lower cover and the light guide plate. These intermediary features provide precise positioning and guidance, ensuring accurate placement of the light guide plate without requiring complex alignment procedures or additional positioning devices.
Data Source
AI summary
A liquid crystal display includes: a liquid crystal panel; a light source disposed at a lower portion of the liquid crystal panel and providing light to the liquid crystal panel; a light guide plate for guiding light emitted from the light source toward the liquid crystal panel; and a lower cover including a plurality of guide protrusions being in contact with the side of the light guide plate to guide the position of the light guide plate and accommodating the light source and the light guide plate therein.