Edge Polarizer Light Blocking for Display Panel Leakage
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Solution Overview
Problem
Current liquid crystal display apparatuses face challenges with light leakage and high production costs due to the need for black borders to prevent metal edge light leakage, which increases investment costs and reduces production efficiency.
Innovation Solution
The display apparatus incorporates polarizers arranged around the edges of the substrates to block reflecting light from metal wires, combined with a sealing structure that surrounds the active area, reducing the need for additional light-blocking layers and minimizing manufacturing complexity and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If black border (BM) is coated on back surface of glass to prevent light leakage, then light leakage is prevented, but production efficiency is reduced and scuffing risk increases
Solution Approach 1:
The patent extracts the light-blocking function from the black border coating process and relocates it to the polarizer layer. The polarizer's outer region is configured to block light from metal wires at panel edges, eliminating the need for separate black border coating and glass flipping operations, thereby preventing light leakage while maintaining production efficiency
Solution Approach 2:
The patent merges the light-blocking function into the polarizer structure itself. The polarizer is designed with an outer region that performs both its primary polarization function and the additional function of blocking light from metal wires, combining multiple functions into a single component and eliminating the need for separate black border processing steps
2Object-affected harmful factors
If black border (BM) is coated on back surface of glass to prevent light leakage, then light leakage is prevented, but investment cost increases
Solution Approach 1:
The patent extracts the light-blocking function from the black border coating process and relocates it to the polarizer layer. The polarizer's outer region is configured to block light from metal wires at panel edges, eliminating the need for separate black border coating and glass flipping operations, thereby preventing light leakage while maintaining production efficiency
Solution Approach 2:
The patent makes the polarizer multi-functional by configuring its outer region to perform both polarization and light-blocking functions. This universal approach eliminates the need for separate black border processing equipment and operations, reducing investment costs while maintaining the ability to prevent light leakage
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 effectively eliminates light leakage, reduces manufacturing processes, and lowers production costs while maintaining high production efficiency and visual quality.
Implementation Method 1
polarizers, comprising a first polarizer and a second polarizer... the first polarizer is arranged on the polarizing portion... the first polarizer and the second polarizer are arranged successively on the bonding portions
Implementation Method 2
The arrangement of the polarizers of the bonding portions can be used for blocking the reflecting light of a metal wire on the periphery
Data Source
AI summary
The present application discloses a display apparatus includes a display panel including substrate, a second substrate and sealing portions, wherein the first substrate and the second substrate a arranged opposite to each other, the sealing portions are arranged between the first substrate and the second substrate, and the sealing portions are arranged to surround an active area of the display panel; and polarizers, including a first polarizer and a second polarizer. An outer side of the first substrate comprises bonding portions covering the sealing portions in corresponding positions and a polarizing portion in a middle position between the bonding portions, the first polarizer is arranged on the polarizing portion, the first polarizer and the second polarizer are arranged successively on the bonding portions, or the second polarizer and the first polarizer are successively on the bonding portions.