Liquid Crystal Display Light Diffusion Bead Wet Out Prevention
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Solution Overview
Problem
The narrow spacing between the upper polarizer and the touch panel in liquid crystal display devices leads to a 'wet out' phenomenon, causing reduced image quality and brightness due to the touch panel and upper polarizer touching each other, which results in uncontrolled haze and glare.
Innovation Solution
A light diffusion bead with embossing is applied to the upper polarizer, providing an anti-glare treatment that prevents the 'wet out' phenomenon by controlling haze and maintaining image quality even when the space between the touch panel and upper polarizer is minimized.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the space between the upper polarizer and the touch panel is minimized for device thinness, then the device thickness is reduced, but the touch panel and upper polarizer touch each other causing wet out phenomenon and reduced image quality
Solution Approach 1:
A light diffusion bead is introduced as an intermediary element between the upper polarizer and the touch panel. This bead prevents direct contact between the polarizer and touch panel surfaces, eliminating the wet out phenomenon while maintaining minimal spacing for device thinness. The bead acts as a physical mediator that preserves optical quality without requiring larger gaps.
2Reliability
If a light diffusion bead with embossing is applied to the upper polarizer, then haze is controlled and wet out is prevented, but the device structure becomes more complex
Solution Approach 1:
The light diffusion bead combines multiple functions into a single element: it provides haze control, prevents wet out phenomenon, and maintains spacing between components. By merging these functions into one bead structure rather than using separate components for each function, the overall device complexity is minimized while achieving reliable haze control.
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
The light diffusion bead effectively prevents the 'wet out' phenomenon and improves brightness by maintaining image quality and reducing glare, even with a narrow spacing between the touch panel and upper polarizer, thereby enhancing the overall performance of the liquid crystal display device.
Implementation Method 1
a light diffusion bead formed on the upper polarizer for controlling a haze of the upper polarizer
Data Source
AI summary
A liquid crystal display device which improved brightness by preventing a wet out phenomenon caused by narrowing of a space between an upper polarizer and a touch panel is provided. The device includes a liquid crystal display panel for display images; a backlight unit for emitting light from the bottom of the liquid crystal display panel; upper and lower polarizers formed on top and bottom surfaces of the liquid crystal display panel, respectively; a light diffusion bead formed on the upper polarizer for controlling a haze of the upper polarizer; a support main for organizing the liquid crystal display panel and the backlight unit; a cover bottom for covering a lower surface and one side surface of the support main; a case top for covering and fixing the edges of the liquid crystal display panel and the cover bottom; and a touch panel, whose edges are fixed by the case top, formed on the upper polarizer formed with the light diffusion bead.