Display Lamination Head for UV Refraction and Reliable Bonding
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Solution Overview
Problem
Existing lamination processes for display panels and cover windows are inefficient and may result in reduced lamination reliability and increased process complexity due to issues like light dispersion and the need for separate heat-providing components.
Innovation Solution
A lamination device with a pressing part that includes a light refraction part and a head part, which refracts and transmits UV light to cure a guide film, and a method that involves pressing the panel against a window while emitting UV light, followed by removing the pressing part, ensuring reliable lamination and simplifying the process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a conventional lamination process is used with separate heat-providing components, then the heating function can be provided, but the device complexity and process complexity increase
Solution Approach 1:
The patent combines the heating function with the UV light source by using a transparent head that transmits both UV light and heat. The UV lamp provides both curing light and thermal energy through the transparent pressing part, eliminating the need for separate heating components and simplifying the overall process
Solution Approach 2:
The transparent head serves multiple functions: it acts as a pressing part, a light-transmitting window, and a heat-providing component simultaneously. This multi-functional design reduces device complexity while maintaining all necessary functions for lamination
2Reliability
If UV light is emitted without proper refraction control, then the light source can be simple, but light dispersion occurs reducing lamination reliability
Solution Approach 1:
A transparent refractive member is introduced as an intermediary between the UV light source and the guide film. This member focuses and directs the UV light onto the guide film, preventing light dispersion and ensuring reliable curing without requiring complex light control systems
Solution Approach 2:
The patent changes the optical parameters of the light path by using a transparent head with specific refractive properties. The head material and geometry are designed to control light transmission and focusing, improving light delivery efficiency and lamination reliability
3Device complexity
If the pressing part is made of a single material, then the structure is simple, but it cannot simultaneously refract light and provide adequate pressing force
Solution Approach 1:
The pressing part is constructed as a composite structure with a transparent head made of a material that allows UV light transmission while providing mechanical pressing capability. The composite design enables both optical and mechanical functions to be performed effectively
Solution Approach 2:
The pressing part is divided into functional segments: a transparent head portion for light transmission and refraction, and a pressing mechanism portion for applying force. This segmentation allows each part to be optimized for its specific function while working together as a unified system
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
Enhances lamination reliability between the display panel and cover window by reducing light dispersion and eliminating the need for separate heat-providing components, thereby simplifying the manufacturing process.
Implementation Method 1
a light refraction part disposed adjacent to the light source and refracting, toward the window fixing chuck, the light that was emitted in the direction of the pressing part
Implementation Method 2
emitting light in a direction of the pressing part; the light has a central wavelength of about 200 nm to about 400 nm
Data Source
AI summary
A lamination device includes: a stage including a fixing part; a pressing part disposed on the stage; a light source disposed between the stage and the pressing part, and configured to emit light in a direction of the pressing part; and a window fixing chuck overlapping the pressing part, wherein the pressing part includes: a light refraction part disposed adjacent to the light source and refracting, toward the window fixing chuck, the light that was emitted in the direction of the pressing part; and a head part disposed to at least partially surround the light refraction part, and configured to transmit the light that was refracted toward the window fixing chuck, wherein the head part includes a material different from that of the light refraction part.