Optical Film Bonding Orthogonal Anisotropy Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing manufacturing systems for optical display devices face inefficiencies in bonding optical films to both sides of the display unit, particularly due to the need for double labor and challenges in aligning absorption axes of polarizing plates, which affects manufacturing efficiency and yield.
Innovation Solution
A method that uses two rolls with the same optical anisotropy direction, cutting and bonding the optical films to correspond to the long and short sides of the optical display unit, allowing for orthogonal alignment of optical anisotropies and enabling continuous production line bonding without requiring vertical feeding directions, thus improving space efficiency and yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional separate manufacturing locations are used for optical film production and panel processing, then quality control is improved, but production cost increases and multiple transport steps are required
Solution Approach 1:
The patent merges the optical film production line and panel processing line into a single integrated manufacturing system. The optical film is produced continuously on a roll and directly fed into the bonding apparatus without separation, eliminating the need for separate manufacturing locations, multiple transport steps, and intermediate packaging while maintaining quality control through continuous in-line processing
2Manufacturing precision
If optical films are bonded to both sides of the display unit, then manufacturing completeness is improved, but labor requirements double and process complexity increases
Solution Approach 1:
The patent segments the bonding process into two independent but integrated stations: a first bonding apparatus for bonding the optical film to one side of the display unit, and a second bonding apparatus for bonding to the other side. This segmentation allows each station to operate independently with its own feed mechanism, reducing overall process complexity while ensuring both sides are bonded
Solution Approach 2:
The manufacturing system uses identical bonding apparatus configurations for both sides of the display unit, creating a universal process that can handle both bonding operations with the same equipment design. This multi-functionality reduces the need for specialized equipment for each side and simplifies operator training and maintenance
3Area of stationary object
If material rolls with width corresponding to the short side are used, then space efficiency is improved, but cutting length must correspond to the long side requiring precise alignment
Solution Approach 1:
The patent deliberately uses material rolls with width corresponding to the short side of the display unit, creating an asymmetric arrangement where the roll width does not match the display unit's width. This asymmetric configuration optimizes space efficiency in the manufacturing layout while the system compensates for the mismatch through precise cutting and feeding mechanisms that ensure proper alignment during the bonding process
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 approach enhances manufacturing efficiency by allowing orthogonal alignment of optical anisotropies, reducing labor and space requirements, and improving the yield of optical display units by using a continuous production line for bonding both sides of the optical films.
Implementation Method 1
A release film is peeled off from the piece of sheet material while leaving a pressure-sensitive adhesive layer, and it is bonded to one face of the optical display unit by using the pressure-sensitive adhesive layer as a bonding face.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Provided are a manufacturing system and a manufacturing method for an optical display device, which are enabled to adhere upper and lower optical films to an optical display device by using two rolls having optical anisotropies such as absorption axes in the same direction, so that the optical anisotropies may be orthogonal to each other. In the manufacturing system for the optical display device, the optical films are adhered to an optical display unit (W) . The manufacturing system comprises a feeding device (M2) forafirstopticalfilm (F11) to be fed after cut to a predetermined length, and a feeding device (M5) for a second optical film (F21) to be fed after cut to a predetermined length. The feeding device (M2) of the first optical film (F11) and the feeding device (M5) of the second optical system (F21) are so constituted in a manner to correspond to the longer side and the shorter side of the optical display unit (W), that one feeding device may cut the optical film having a width corresponding to the shorter side may be cut to a length corresponding to the longer side whereas the other feeding device may cut the optical film having a width corresponding to the longer side may be cut to a length corresponding to the shorter side.