OLED Display In-Cell Touch Integration
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Solution Overview
Problem
Existing OLED display apparatuses with external touch panels suffer from increased thickness and vulnerability to damage due to the separate integration of touch structures, which complicates manufacturing and limits thinning processes.
Innovation Solution
The integration of driving lines, sensing lines, and touch signal transmission structures within the OLED display apparatus between the cover plate and array substrate, eliminating the need for external touch panels and allowing for a thinner, more robust design without additional manufacturing steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a touch panel is attached on the outside of the OLED display apparatus, then the touch function is provided, but the thickness increases and the touch structure becomes vulnerable to damage
Solution Approach 1:
The patent merges the touch structure with the OLED display apparatus by integrating the touch electrode layer, insulating layer, and conductive layer within the same device structure. The touch electrode layer is formed on the same substrate as the OLED components, and the conductive layer is integrated with the electrode structure, creating a unified device that eliminates the need for separate external touch panels while reducing overall thickness and improving structural reliability.
2Ease of manufacture
If a touch panel is attached on the outside of the OLED display apparatus, then the touch function is provided, but the manufacturing process becomes more complex
Solution Approach 1:
The patent implements multi-functionality by designing a substrate and electrode structure that simultaneously serves both OLED display functions and touch sensing functions. The same substrate supports both the OLED light-emitting structure and the touch electrode layer, while the conductive layer performs both electrical connection for OLED operation and touch signal transmission, thereby eliminating the need for separate manufacturing processes for external touch panel attachment.
Data Source
AI summary
An OLED display apparatus with an in cell touch structure includes a cover plate, an array substrate facing the cover plate, an organic light-emitting layer arranged therebetween, multiple driving lines and multiple sensing lines arranged at an inner side of the cover plate facing the array substrate, multiple signal pins arranged at an inner side of the array substrate, where each of the signal pins corresponds to one of the driving lines or one of the sensing lines, and multiple conductive structures. The conductive structures are arranged between the driving lines and the signal pins or between the sensing lines and the signal pins. Each conductive structure includes an end electrically connecting a driving line or a sensing line to a corresponding signal pin, and an opposite end electrically connected to a corresponding touch signal transmission line.