Touch Display Panel Anti-View Anode Bridging
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Solution Overview
Problem
Capacitive touch display panels require a high number of photomasks and manufacturing processes, leading to increased production costs.
Innovation Solution
A touch display panel design that includes a substrate with a touch anti-view area featuring an anti-view sub-pixel, insulating barrier part, and touch electrode layer, where the anti-view anode acts as a bridging metal layer to connect adjacent second electrodes, reducing the need for additional bridging metal layers and photomasks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional capacitive touch display panel is used, then multi-point control and high sensitivity are achieved, but the number of photomasks and manufacturing processes increases leading to higher production cost
Solution Approach 1:
The anti-view anode serves dual functions: (1) as the anode for the anti-view light-emitting part to enable anti-view function, and (2) as a bridging metal layer to electrically connect adjacent second electrodes for touch signal transmission. This merging of functions eliminates the need for separate bridging metal layers and reduces the number of photomasks required in manufacturing.
Solution Approach 2:
The anti-view anode is designed to perform multiple roles within the same structural layer: it acts as both the functional anode for light emission in anti-view mode and as an electrical bridge for touch electrode connectivity. This multi-functionality reduces overall device complexity and manufacturing steps while maintaining both touch sensitivity and anti-view performance.
2Reliability
If additional bridging metal layers are added to connect touch electrodes, then electrical connectivity is improved, but the number of photomasks and manufacturing processes increases
Solution Approach 1:
The anti-view anode is merged with the bridging metal layer function, eliminating the need for separate additional metal layers. The same anti-view anode structure that enables anti-view light emission also provides the electrical bridge for connecting adjacent second electrodes, thereby improving electrical connectivity without adding manufacturing complexity.
Solution Approach 2:
The anti-view anode is designed with universal functionality to serve both as the light-emitting anode for anti-view operation and as the electrical bridge for touch electrode connectivity. This multi-functional design ensures reliable electrical connection while simplifying the manufacturing process by reducing the number of required photomasks.
Data Source
AI summary
A touch display panel includes a substrate with a touch anti-view area. The touch anti-view area is provided with an anti-view sub-pixel including an anti-view anode, an anti-view light-emitting part and an anti-view cathode; an insulating barrier part formed on a side of the anti-view anode with a first via hole, a part of the anti-view anode being exposed though the first via hole, and a gap is formed between the first via hole and the anti-view cathode; and a touch electrode layer including a first electrode and a second electrode, where the second electrode includes a main electrode part and a connecting part, the connecting part of each second electrode is located in the first via hole and connected with the anti-view anode, and two adjacent second electrodes in the first direction are electrically connected through the anti-view anode.