Resin Layer Curing in Display Devices via Side Light Irradiation
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Solution Overview
Problem
Existing display devices face issues with incomplete curing of the resin layer in the peripheral area, leading to potential image distortion and reduced impact resistance due to air gaps or foreign materials between the display panel and the window.
Innovation Solution
A display device design featuring a resin layer between the window and the touch panel, with a reinforcing tape and a groove structure that allows for full curing of the resin layer using ultraviolet light, ensuring complete attachment and enhanced impact resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a resin layer is disposed between the window and the display panel, then the display panel is protected and structural integrity is improved, but the resin layer in the peripheral area is not fully cured leading to air gaps and foreign materials
Solution Approach 1:
The resin layer is divided into two distinct regions: a first resin layer in the display area and a second resin layer in the peripheral area. This segmentation allows each region to be cured independently using different light sources, ensuring complete curing of the peripheral resin layer that would otherwise remain uncured in a single-layer structure
Solution Approach 2:
The patent introduces a side light irradiation dimension to cure the peripheral resin layer. Instead of relying solely on top-down light transmission through the window, light is irradiated from the side of the display panel, enabling complete curing of the peripheral resin layer and eliminating air gaps
2Ease of manufacture
If the resin layer is not fully cured in the peripheral area, then manufacturing is simpler, but image distortion occurs and impact resistance is reduced
Solution Approach 1:
By segmenting the resin layer into first and second resin layers corresponding to different functional areas, the patent enables selective curing processes. The peripheral resin layer can be cured using side light irradiation without affecting the display area curing process, maintaining manufacturing simplicity while achieving complete curing
Solution Approach 2:
A light-shielding layer is introduced as an intermediary element between the window and the peripheral resin layer. This light-shielding layer blocks light from reaching the peripheral resin layer from the front, forcing the use of side light irradiation for curing and ensuring complete curing while preventing image distortion
3Strength
If the display panel thickness is increased to improve impact resistance, then structural strength is improved, but the overall device size increases
Solution Approach 1:
The patent uses a composite structure combining the light-shielding layer, resin layer, and display panel. The light-shielding layer made of light-absorbing material combined with the cured resin layer provides enhanced impact resistance without requiring significant thickness increase, as the composite structure achieves strength through material composition rather than dimensional increase
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
The solution ensures a fully cured resin layer, preventing image distortion and improving impact resistance by eliminating air gaps and foreign materials, while reinforcing the display panel's thickness.
Implementation Method 1
a resin layer disposed between the window and the touch panel and cured with light
Data Source
AI summary
A display device is disclosed. In one embodiment, the device includes: i) a display panel having a display area and a peripheral area, ii) a touch panel disposed corresponding to the display area on the display panel, iiii) a connecting portion extending from an edge of the touch panel to an edge of the display panel and iv) a window disposed on the touch panel, and including a window main body covering the display area and the peripheral area and a black matrix portion covering the peripheral area. The device may further include a resin layer disposed between the window and the touch panel and cured with light and a reinforcing tape attached to the peripheral area of the display panel and attached between the connecting portion and the display panel, and having a groove recessed corresponding to the connecting portion.