Laminated Window Groove for Display Touch and Light Management
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Solution Overview
Problem
Existing display devices with laminated windows face challenges in reducing thickness while maintaining effective touch recognition and light management, particularly in low illumination conditions.
Innovation Solution
A window design featuring a recessed groove for a touch portion and a backlight unit, with a light blocking portion to manage light emission and enhance lamination with resin, allowing for easy attachment and improved impact resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the window is laminated directly onto the display panel without a groove, then the structure is simpler, but UV light cannot be blocked during resin hardening and light management in low illumination conditions is poor
Solution Approach 1:
The window is divided into a window main body and a separate groove structure. The groove is formed as a distinct recessed portion within the window main body, allowing independent functionality for light management and UV blocking without complicating the overall window assembly process.
Solution Approach 2:
The groove is positioned specifically in the non-display area of the display panel, concentrating light management and UV blocking functions only where needed. This localized approach improves illumination control without affecting the display area or requiring complex modifications across the entire window structure.
2Illumination intensity
If the window structure includes additional components for light management, then light emission control improves, but the thickness and complexity of the window increase
Solution Approach 1:
The groove is nested within the window main body, with the touch portion and backlight unit positioned inside the recessed groove. This nested configuration allows light management components to be integrated within the existing window thickness rather than adding external layers, maintaining a compact overall structure.
Solution Approach 2:
Instead of adding thickness to control light emission, the groove creates a vertical recess that manages light in the depth dimension. The backlight unit and touch portion are positioned within this recessed space, controlling light emission without increasing the horizontal or lateral dimensions of the window.
3Reliability
If the touch portion is positioned on the surface of the window main body, then touch recognition is effective, but UV light blocks the resin during hardening
Solution Approach 1:
Instead of positioning the touch portion on the outer surface of the window, the groove is inverted to face the resin layer. The touch portion is positioned within the recessed groove such that its sensing surface faces the resin during lamination, allowing UV light to pass through the resin for hardening while the touch portion remains functional for recognizing touches on the window surface.
4Length of stationary object
If the window is made thinner to reduce device thickness, then the overall device thickness decreases, but light management and touch recognition become more difficult
Solution Approach 1:
The groove creates a vertical recess that adds functional depth without increasing the overall window thickness. By positioning the touch portion and backlight unit within this recessed space, the window maintains a thin profile while providing sufficient space for effective touch recognition and light management components.
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
Enables efficient lamination of the window onto the display panel, enhances touch recognition, and maintains light emission for user visibility, while preventing UV blocking during resin hardening, thus addressing thickness reduction and functionality in low light conditions.
Implementation Method 1
the resin may be hardened by irradiation with ultraviolet (UV) light
Implementation Method 2
a backlight unit adjacent the touch portion and within the groove, the backlight unit being configured to emit light
Data Source
AI summary
A window configured to be laminated on a display panel by resin, the display panel including a display area configured to display an image and a non-display area adjacent the display area includes a window main body configured to cover the display panel; a groove in a region corresponding to the non-display area of the display panel, the groove being recessed from a surface of the window main body facing the display panel; and a touch portion within the groove and configured to recognize a touch.