Touch Display Panel Insulating Layer Covering Encapsulation Sidewalls
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Solution Overview
Problem
The encapsulation layer in OLED display panels is prone to damage during the formation of the touch layer, leading to poor protection performance.
Innovation Solution
A touch display panel design that includes a touch electrode layer and a touch insulating layer, where the insulating layer covers the top and side faces of the encapsulation layer, preventing damage during the formation process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the touch layer is formed on the encapsulation layer, then the touch control function is achieved, but the encapsulation layer is damaged resulting in poor protection performance
Solution Approach 1:
The patent applies preliminary action by forming a protective film on the encapsulation layer before forming the touch layer. This protective film is created in advance to prevent damage to the encapsulation layer during subsequent touch layer formation processes, thus resolving the contradiction between achieving touch control function and maintaining encapsulation layer integrity
Solution Approach 2:
The patent introduces an intermediary element (protective film) between the encapsulation layer and the touch layer. This intermediary layer serves as a buffer that protects the encapsulation layer from damage while allowing the touch layer to function properly, thus resolving the contradiction between touch control functionality and encapsulation protection performance
2Ease of manufacture
If the touch layer is formed directly on the encapsulation layer, then the manufacturing process is simplified, but the encapsulation layer integrity is compromised
Solution Approach 1:
The protective film is formed as a preliminary layer before the touch layer, which maintains manufacturing simplicity while ensuring encapsulation layer integrity. This preliminary action prevents the need for complex repair processes later, thus resolving the contradiction between ease of manufacture and manufacturing precision
Data Source
AI summary
Provided is a touch display panel. The touch display panel includes a drive back plate, a light-emitting device, an encapsulation layer, and a touch layer, wherein the light-emitting device is disposed on the drive back plate; the encapsulation layer is disposed on a side of the light-emitting device distal from the drive back plate; and the touch layer is disposed on a side of the encapsulation layer distal from the light-emitting device, wherein the touch layer comprises a touch electrode layer and a touch insulating layer, wherein the touch insulating layer is disposed on a side of the touch electrode layer distal from the encapsulation layer and/or between the touch electrode layer and the encapsulation layer, wherein the encapsulation layer is formed by a top face, a bottom face, and a side face, at least portion of the touch insulating layer covers the top face and the side face.