LCD Housing Alignment Structure for Thin Display
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Solution Overview
Problem
Existing liquid crystal displays face challenges in aligning the light guide plate and light source without separate equipment, which restricts the implementation of thin designs and reduces light efficiency.
Innovation Solution
A liquid crystal display configuration that includes a display panel, an LED package mounted on a PCB, a light guide plate on the display panel's lower surface, a back cover supporting the light guide plate, a housing with a side surface in contact with the PCB, and an upper case that applies force to the display panel and housing edges to maintain alignment and prevent misalignment due to external impacts or temperature changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the light guide plate and display panel are brought into direct contact to reduce thickness, then the device thickness is reduced, but alignment between the light guide plate and light source becomes difficult to maintain
Solution Approach 1:
The housing integrates multiple functions: it supports the PCB, supports the back cover, and provides alignment features for the light guide plate and light source. By merging these support and alignment functions into a single integrated housing structure, the patent achieves both thinness and precise alignment without requiring separate alignment components.
Solution Approach 2:
The housing acts as an intermediary structure that mediates between the light source and light guide plate. It includes specific features such as a light source support portion and a light guide plate support portion that work together to maintain precise alignment. This intermediary structure enables direct contact between the light guide plate and display panel while preserving alignment precision.
2Manufacturing precision
If separate components are added to align and fix the light guide plate and light source, then alignment precision is improved, but the device thickness and complexity increase
Solution Approach 1:
Instead of using separate alignment components, the patent merges the alignment function into the housing structure itself. The housing includes integrated support portions and positioning features that simultaneously provide mechanical support and precise alignment, eliminating the need for additional separate alignment components and maintaining device thinness.
Solution Approach 2:
The housing is designed as a multi-functional component that simultaneously performs support, alignment, and fixation functions. It supports the PCB, supports the back cover, aligns the light guide plate, and positions the light source, all within a single structure. This multi-functionality reduces the number of components needed while maintaining alignment precision.
3Manufacturing precision
If separate components are added to align and fix the light guide plate and light source, then alignment precision is improved, but the device complexity and component count increase
Solution Approach 1:
The patent merges multiple support and alignment functions into a single integrated housing structure. Instead of having separate components for PCB support, back cover support, light guide plate alignment, and light source positioning, all these functions are combined in one housing, reducing component count and simplifying the overall device structure while maintaining alignment precision.
Solution Approach 2:
The housing is designed as a universal component that performs multiple functions simultaneously: structural support, alignment, and fixation. This multi-functional design reduces the total number of components needed in the device while ensuring precise alignment between the light guide plate and light source through integrated features.
Data Source
AI summary
According to the present exemplary aspect, provided is a liquid crystal display including a display panel, an LED package including a plurality of LEDs which emits light, a PCB in which the LED package is mounted, a backlight unit which includes a light guide plate which is disposed on a lower surface of the display panel and has a light entering plane opposite to the LED package and a back cover supporting a lower surface of the light guide plate, a housing in which a side surface is in contact with the PCB and an upper surface is in contact with one area of a lower surface of the back cover, and an upper case which applies force to an upper edge portion of the display panel and a lower edge portion of the housing. According to the present exemplary aspects, the light guide plate and the light source may be easily aligned without using separate equipment when the light guide plate and the display panel are brought into direct contact with each other.