Liquid Crystal Module Full Lamination Structure Reducing Light Loss
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Solution Overview
Problem
Conventional liquid crystal module lamination structures experience significant light loss due to the refraction angle increase when light passes from an optically denser medium to air and then to another solid substrate, resulting in reduced light usage and image quality.
Innovation Solution
A full lamination structure for a liquid crystal module is implemented, featuring an optical transparent adhesive between the liquid crystal panel and optical films, along with a buffer layer to reduce refraction angles and prevent light leakage, utilizing a double-sided or liquid optical adhesive with greater than 99% transmittance, and a compressible seal function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If air space layer is used between optical film and liquid crystal panel, then assembly is simplified, but light refraction increases and light loss increases
Solution Approach 1:
The patent introduces an optical transparent adhesive as an intermediary material between the optical film and the liquid crystal panel, replacing the conventional air space layer. This adhesive layer has optical properties that are intermediate between air and the optically denser media, reducing the refraction angle and minimizing light loss while maintaining the simplified assembly structure.
Solution Approach 2:
The patent changes the optical parameter (refractive index) of the medium between the optical film and liquid crystal panel from air (low refractive index) to optical transparent adhesive (intermediate refractive index). This parameter change reduces the refraction angle according to Snell's law, thereby reducing light loss while keeping the structure simple.
2Loss of energy
If optical transparent adhesive is used between optical film and liquid crystal panel, then light refraction is reduced and light usage increases, but manufacturing complexity increases
Solution Approach 1:
The patent combines the functions of the space layer and the adhesive into a single optical transparent adhesive layer. This merging eliminates the need for separate air space maintenance while providing both spacing and optical coupling functions, thereby reducing light refraction without significantly complicating the manufacturing process.
Solution Approach 2:
The optical transparent adhesive serves multiple functions simultaneously: it acts as a spacer to maintain the required distance between components, provides optical coupling to reduce refraction, and serves as an adhesive to bond the layers together. This multi-functionality reduces the number of separate components and simplifies the overall manufacturing process despite the specialized material 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 configuration reduces light refraction angles, minimizes light loss, and enhances image quality by increasing the light incidence rate into the liquid crystal panel, while ensuring a seamless seal between components.
Implementation Method 1
Because the optical film is an optically denser medium and the air is an optical thinner medium, the refraction angle of the light is greater than the incidence angle when the light from the optical film enters into the air during the light propagation. It may refract amount of incident light into the backlight module for losing amount of light.
Data Source
AI summary
A full lamination structure for a liquid crystal module comprises a housing, a liquid crystal panel overlapping on the housing, a light guide plate disposed in the housing, a plurality of optical films disposed in the housing, the plurality of optical films stacked on the light guide plate; and a buffer layer and an optical transparent adhesive disposed between the liquid crystal panel and the upmost optical film. This structure not only effectively reduces the light loss, but also increases the light utilization so that the imaging of the liquid crystal panel is clearer.