Backlight Module Waterproofing via Frame Recess and Adhesive Sealing
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Solution Overview
Problem
Liquid crystal display devices face poor waterproof performance due to water vapor entering the backlight module from the bonding position, leading to damage and operational issues.
Innovation Solution
A display screen design featuring a display panel with a first notch and a backlight module with a corresponding second notch, where the backlight module includes a frame with a receiving space for the backlight element, and adhesive layers are used to secure the frame to the display panel and a support stage, with a cover plate covering both, enhancing waterproofing and reducing the overall volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a liquid crystal display is used, then power consumption is reduced compared to CRT displays, but viewing angles are limited and images appear inverted when viewed from certain angles
Solution Approach 1:
The liquid crystal display is divided into multiple sub-pixels (red, green, blue) arranged in a specific pattern, with each sub-pixel controlled independently by its own electrode structure. This segmentation allows selective control of light transmission from different viewing angles, compensating for the natural viewing angle limitations of liquid crystal materials while maintaining low power consumption.
Solution Approach 2:
Different regions of the display employ different electrode configurations and liquid crystal orientations optimized for specific viewing zones. The electrode patterns are designed to create localized electric field distributions that maintain image quality and correct color representation across various viewing angles, addressing the viewing angle limitation without increasing overall power consumption.
2Adaptability or versatility
If transparent electrodes are used in liquid crystal displays, then the display can be viewed from multiple angles, but the electrodes consume significant power and generate heat
Solution Approach 1:
The patent extracts the transparent electrode layer from the conventional LCD structure and replaces it with reflective electrodes that work in conjunction with a backlight reflector system. This removal of transparent electrodes eliminates their power consumption and heat generation while maintaining multi-angle viewing capability through the reflective architecture.
Solution Approach 2:
Instead of using transparent electrodes to control light transmission, the invention uses reflective electrodes that work with a virtual image formed by the reflected backlight. The system creates an optical copy or virtual representation of the display image that can be viewed from multiple angles without requiring power-consuming transparent electrodes.
3Speed
If the liquid crystal layer is made thinner to reduce response time, then response speed improves, but manufacturing precision requirements increase
Solution Approach 1:
The patent employs dynamic electrode patterns that change over time, using alternating high and low voltage applications to different electrode segments. This dynamic control allows the liquid crystal molecules to respond more quickly to switching signals, achieving fast response times without requiring extremely thin liquid crystal layers, thereby reducing manufacturing precision requirements.
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 design significantly improves the waterproof performance of the display screen, preventing moisture from entering the backlight module and enhancing the bonding strength between components, while also reducing the space occupied by the display screen in electronic devices.
Implementation Method 1
a liquid crystal layer (330) between the two substrats (310, 320)
Data Source
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AI summary
A display screen and an electronic apparatus. A backlight module (13) has a second recess (102). A frame (131) has an accommodation space (1313). A backlight element (132) is provided inside the accommodation space (1313). The frame (131) is connected to a display panel (120). A first adhesive layer (141) covers a joint where the frame (131) and the display panel (120) are connected. A (133) is provided between a sidewall (1312B) surrounding the second recess (102) and the backlight element (132). A second adhesive layer (142) is formed between a lower surface (1202) of the display panel (120) and the frame (131) and the supporting member (133). A cover plate (110) covers the display panel (120).