Polarizing Plate Inclined Light Shielding Pattern
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing polarizing plates face issues with bubble generation and insufficient light shielding due to the thickness limitations of printed patterns, which affect the external appearance and functionality of optical displays.
Innovation Solution
A polarizing plate design featuring a polarizer with a bonding layer and a first polarizer protective film, where the light shielding layer has inclined angles between 0° to 85°, integrated within the bonding layer, and composed of single or multiple printed layers with varying thicknesses and cross-sectional shapes, preventing bubble formation and enhancing light shielding efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the printed patterns are made thinner to reduce the overall thickness, then the thickness of the optical display is reduced, but the light shielding effect becomes insufficient
Solution Approach 1:
The patent uses a composite structure combining a printed pattern layer with a light shielding layer containing metal particles. This composite approach allows the printed pattern to be thinner while the metal particles provide additional light shielding capability, resolving the contradiction between reduced thickness and maintained light shielding effect.
Solution Approach 2:
The light shielding layer is selectively positioned in the non-display region rather than uniformly across the entire display. This local quality approach allows thickness reduction in the display region while maintaining light shielding in the non-display region where it is most needed.
2Reliability
If the printed layer forms steps with respect to the surface of the protective film, then the light shielding effect is improved, but bubbles are generated during bonding process
Solution Approach 1:
The patent introduces a bonding layer between the printed pattern and the protective film as a preliminary measure. This bonding layer compensates for the height difference created by the stepped printed pattern, preventing bubble formation during the bonding process while maintaining the light shielding effectiveness of the stepped structure.
3Reliability
If multiple printed layers are used to improve light shielding, then the light shielding effect is enhanced, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent merges the light shielding function with the printed pattern structure itself by incorporating metal particles into the printed layer. This combining approach achieves enhanced light shielding without requiring multiple separate printed layers, thereby reducing manufacturing complexity while maintaining or improving light shielding effectiveness.
Data Source
AI summary
A polarizing plate and an optical display comprising the same. The polarizing plate includes a polarizer; and a bonding layer and a first polarizer protective film sequentially stacked on a lower surface of the polarizer, wherein the first polarizer protective film includes a light shielding layer formed in at least some region on an upper surface thereof and the light shielding layer is composed of at least one printed pattern, the printed pattern being composed of a single printed layer or multiple printed layers and having a first plane formed at a top portion thereof and an inclined angle θ of greater than about 0° to about 85° or less, the inclined angle being defined between the first polarizer protective film and an imaginary line I-II connecting one distal end point I of the first plane at the top portion of the printed pattern to a point II disposed on an outer peripheral surface of the printed pattern adjoining the first polarizer protective film and closest to the distal end point I.