Guide Panel Light Leakage Prevention in Narrow Bezel LCD
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Solution Overview
Problem
Conventional liquid crystal display devices experience light leakage in non-display areas due to gaps between the liquid crystal panel and the cover bottom, which can lead to defects and reduced image quality.
Innovation Solution
A narrow bezel-type liquid crystal display device is designed with a guide panel mounted inside the cover bottom, where the liquid crystal panel is supported by the side of the cover bottom instead of the guide panel, and a guide panel with a first and second portion is used to block light leakage, formed by double injection molding with black or light-blocking materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the liquid crystal panel is supported by the guide panel, then the liquid crystal panel is properly positioned and supported, but light leakage occurs in non-display areas due to gaps between the liquid crystal panel and cover bottom
Solution Approach 1:
The guide panel is divided into two distinct portions: a first portion that supports the liquid crystal panel from below, and a second portion that extends upward to block light in non-display areas. This segmentation allows each portion to perform its specific function independently, solving both positioning and light leakage issues simultaneously.
Solution Approach 2:
The second portion of the guide panel extends in the vertical dimension (upward direction) rather than only horizontally. This dimensional extension allows the guide panel to block light from the side in non-display areas, preventing light leakage without interfering with the liquid crystal panel's positioning function.
2Object-affected harmful factors
If the liquid crystal panel is supported by the side of the cover bottom, then light leakage is reduced, but the liquid crystal panel requires precise positioning which becomes more difficult
Solution Approach 1:
The guide panel serves multiple functions: it positions the liquid crystal panel horizontally, supports it from below, and blocks light vertically in non-display areas. By making the guide panel multi-functional, the invention eliminates the need for separate positioning and light-blocking structures, simplifying manufacturing while maintaining precision.
Solution Approach 2:
The guide panel acts as an intermediary structure between the cover bottom and the liquid crystal panel. It provides a stable mounting surface on the cover bottom while simultaneously providing the light-blocking function, mediating between structural support and optical isolation requirements.
3Device complexity
If a traditional mounting structure is used, then the structure is simple, but light leakage occurs and image quality deteriorates
Solution Approach 1:
The invention merges the positioning function and light-blocking function into a single integrated guide panel structure. Instead of using separate components for positioning and light shielding, both functions are combined in one element, reducing overall structural complexity while effectively preventing light leakage.
Data Source
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AI summary
A narrow bezel-type liquid crystal display device is provided which is made as narrow as possible on the outer area. The narrow bezel-type liquid crystal display device according to an embodiment includes a guide panel with a light leak prevention function. This narrow bezel-type liquid crystal display device can reduce light leakage in a non-display area because the guide panel corresponding to a non-display area of the liquid crystal panel is made in black by double injection molding.