Integrated Touch Display Circuit Structure for AMOLED Aperture Ratio
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Solution Overview
Problem
Current touch display products, particularly those combining Active Matrix Organic Light Emitting Diode (AMOLED) with In Cell Touch technology, face complexities in production processes and low aperture ratios, limiting their market penetration.
Innovation Solution
Integration of the touch structure and display unit circuits during manufacturing, utilizing thin film transistors and voltage compensation to reduce production steps and enhance aperture ratios, while maintaining cost-effectiveness and added value.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If In Cell Touch technology is combined with AMOLED display, then touch functionality is integrated into the display, but the production process becomes too complicated and aperture ratio decreases
Solution Approach 1:
The patent merges the touch sensing function and display function into a single integrated structure by forming the touch electrode pattern and display electrode pattern on the same substrate using the same ITO layer and subsequent processing steps. This consolidation eliminates the need for separate touch and display manufacturing processes, thereby reducing production complexity while maintaining both functionalities.
Solution Approach 2:
The ITO layer and subsequent processing steps serve dual purposes: forming both the touch electrode pattern for sensing and the display electrode pattern for visualization. This multi-functionality approach allows a single manufacturing process to achieve both touch and display capabilities, reducing the overall number of production steps.
2Adaptability or versatility
If In Cell Touch technology is combined with AMOLED display, then touch functionality is integrated into the display, but aperture ratio becomes low
Solution Approach 1:
The patent applies local quality by selectively forming the touch electrode pattern and display electrode pattern in different regions of the substrate. The touch electrode is formed in the touch sensing region while the display electrode is formed in the display region, allowing each component to occupy only the space necessary for its function, thereby maximizing the aperture ratio.
Solution Approach 2:
The patent utilizes the vertical dimension by stacking the touch electrode and display electrode in different layers on the substrate. This layered approach allows both electrodes to coexist without significantly occupying horizontal space, thereby preserving a high aperture ratio while integrating both touch and display functionalities.
3Reliability
If separate touch structure and display unit circuits are manufactured, then each component can be optimized independently, but production steps increase and cost increases
Solution Approach 1:
The patent combines the manufacturing of touch and display circuits into a single integrated process flow. The same ITO layer, pattern formation steps, and electrode deposition processes are used for both touch and display circuits, eliminating redundant production steps and improving manufacturing efficiency while maintaining component optimization through selective patterning.
Data Source
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AI summary
The present disclosure discloses a touch display circuit, a driving method thereof, an array substrate and a display apparatus, which are capable of reducing a process during a production procedure of a touch display product, saving a cost while increasing an aperture ratio of the produce and added values. The touch display circuit comprises: a touch unit and a display unit which are connected with each other; a first scan line, a second scan line, a third scan line, a signal control line, a data line, a first level terminal and a second level terminal, which are connected with the display unit; and the second scan line, the third scan line and a signal collecting line, which are connected with the touch unit. Embodiments of the present disclosure may be applied to a manufacture of a display