Display Panel Light-Shielding Openings for Polarizer Resin Curing
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Solution Overview
Problem
The swelling of the polarizing plate end portion due to uncured resin can cause deformation of the display panel, leading to reduced display quality, especially a yellow border, as ultraviolet light is blocked by the light shielding layer and insufficient curing occurs.
Innovation Solution
A partial removal of the light shielding layer in the non-display area creates an opening to allow ultraviolet light to cure the adhesive resin effectively, preventing resin swelling and maintaining panel integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a light shielding layer is formed in the non-display area to shield light, then light leakage is prevented, but ultraviolet light is blocked and the resin cannot be sufficiently cured
Solution Approach 1:
The light shielding layer is segmented by removing a portion of it in the non-display area, creating a patterned structure that allows ultraviolet light to pass through while maintaining light shielding functionality in other areas. This enables the resin to be cured through the removed portion while preventing light leakage through the remaining light shielding layer.
Solution Approach 2:
The light shielding layer has different properties in different areas: it is present in most of the non-display area to prevent light leakage, but removed in a specific local region to allow ultraviolet light transmission for resin curing. This local differentiation resolves the contradiction between light shielding and curing requirements.
2Strength
If the resin is applied to attach the cover member to the polarizing plate, then adhesion is achieved, but the resin swells the end portion of the polarizing plate when not fully cured
Solution Approach 1:
A portion of the light shielding layer is removed in advance before resin application, creating a pathway for ultraviolet light to reach the resin. This preliminary action ensures that the resin can be fully cured without swelling the polarizing plate end portion, while still maintaining adhesion functionality.
3Area of stationary object
If the end portion of the polarizing plate is provided in the non-display area, then the display area is maximized, but the resin cannot be cured due to light blocking
Solution Approach 1:
The light shielding layer in the non-display area is segmented with a removed portion that allows ultraviolet light transmission. This enables the resin in the non-display area to be properly cured while maintaining the maximum display area configuration.
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
Prevents resin swelling and maintains display quality by ensuring complete curing of the adhesive, thereby avoiding deformation and yellow borders.
Implementation Method 1
ultraviolet light is radiated onto the resin through a display panel and the cover member, thereby curing the resin to attach the display panel and the cover member to each other
Data Source
AI summary
According to one embodiment, a display device comprises a display panel and a polarizing plate. The display panel comprises a display area, a non-display area surrounding the display area, and a light-shielding layer arranged in the display area and the non-display area. The polarizing plate is provided on a surface of the display panel, and including an end portion located in the non-display area. In this display device, the light-shielding layer opposite to the end portion of the polarizing plate is at least partially removed.