LCD Reflector Protection Sheet with Protruding Detachment Feature
Solution Overview
Problem
Existing liquid crystal display (LCD) devices face challenges in achieving a thin profile and light weight while protecting their elements, particularly due to the need for a backlight unit and the risk of damage when eliminating the bottom frame to reduce size and weight.
Innovation Solution
The LCD device incorporates a main frame surrounding the liquid crystal panel and backlight unit, with a protection sheet attached to the rear surface of the reflector to prevent damage and a protruding part on the protection sheet for easy detachment, eliminating the need for top and bottom frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of stationary object
If the bottom frame is eliminated to meet the requirements of thin profile and light weight, then the weight and thickness are reduced, but the reflector becomes exposed and vulnerable to damage
Solution Approach 1:
A protection sheet is introduced as an intermediary component between the exposed reflector and the external environment. This sheet serves as a mediator that protects the reflector from damage while allowing the bottom frame to be eliminated for weight reduction. The protection sheet is attached to the rear surface of the reflector and includes a protruding part for easy detachment during assembly.
2Length of stationary object
If the bottom frame is eliminated to meet the requirements of thin profile and light weight, then the thickness and weight are reduced, but the reflector becomes exposed and vulnerable to damage
Solution Approach 1:
The protection sheet acts as a mediator that enables the elimination of the bottom frame while protecting the reflector. By attaching this protective sheet to the reflector's rear surface, the design achieves a thinner profile without compromising the reflector's protection against damage.
3Reliability
If a protection sheet is added to protect the reflector, then the protection is enhanced, but the device complexity increases
Solution Approach 1:
The protection sheet is designed as a thin film or flexible shell that provides effective protection to the reflector without adding significant structural complexity. This thin protective layer can be easily attached and detached, minimizing the impact on overall device complexity while maintaining reliable protection.
4Ease of operation
If the protection sheet is made with a protruding part for easy detachment, then the ease of operation is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The protection sheet is segmented with a protruding part that can be easily detached from the reflector. This segmentation allows for simple manual removal without requiring complex tools or high precision manufacturing, as the protruding part can be manually manipulated to release the protection sheet during assembly or maintenance operations.
Data Source
AI summary
A liquid crystal display device includes a liquid crystal panel; a main frame surrounding sides of the liquid crystal panel; a backlight unit disposed under the liquid crystal panel and surrounded by the main frame, the backlight unit including a light guide plate, a lamp at a side of the light guide plate, a reflector under the light guide plate and an optical sheet on the light guide plate, wherein a rear surface of the reflector is exposed through an opening of the main frame; and a protection sheet attached to the rear surface of the reflector to protect the rear surface of the reflector and including a protruding part at a side of the protection sheet, the protection sheet has a rectangular shape.