Touch Display Device Pad Arrangement Bezel Reduction
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Solution Overview
Problem
Existing touch display devices face challenges in efficiently arranging multiple touch pads on the display panel without increasing the bezel area, which limits the number of touch pads that can be accommodated and affects the touch recognition functionality of large-area displays.
Innovation Solution
A method is introduced to arrange touch pads between display pads and the active area on the display panel, allowing for a higher density of touch pads without increasing the bezel area, by positioning them on the same side portions of the panel, thereby facilitating the implementation of a large-area touch recognition function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple touch pads are arranged on the display panel, then touch recognition capability is improved, but bezel area increases
Solution Approach 1:
The patent transitions from arranging touch pads only in the horizontal dimension to utilizing both horizontal and vertical dimensions by positioning touch pads on opposite side portions of the display panel. This spatial reconfiguration allows multiple touch pads to be accommodated without expanding the overall bezel area, effectively resolving the contradiction between touch recognition capability and bezel size.
2Measurement precision
If multiple touch pads are arranged on the display panel, then touch sensing performance is improved, but device complexity increases
Solution Approach 1:
The patent divides the touch sensing function into multiple independent touch pads positioned at different side portions of the display panel. Each touch pad operates independently to detect touches in specific regions, allowing the system to maintain high touch sensing performance across the entire display area while managing complexity through modular, distributed sensing elements rather than a single complex sensing system.
Data Source
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AI summary
Examples of the disclosure relate to touch display devices. Display pads and touch pads may be arranged on the same side of a display panel by removing a portion of a second substrate to thereby expose the touch pads to the outside after attaching the second substrate on which the touch pads are arranged to a first substrate on which the display pads are arranged. Since the touch pads are positioned higher than the display pads in the area that does not overlap the display pads, bonding between the pads and the printed circuit may be easy to perform. Since the number of pads that may be arranged increases, it is possible to easily implement a large-area, high resolution touch display device.