Touch Display Device Bonding Pin Integration
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Solution Overview
Problem
The integration of a touch detection circuit in touch display devices increases the frame size, leading to manufacturing inefficiencies and potential defects if touch signal lines fail during the manufacturing process.
Innovation Solution
Incorporating touch detection pins within the bonding area of the touch display panel, which connect to both the touch units and the touch display chip, allowing for pre-bonding detection and post-bonding redundancy, thus reducing the need for separate touch detection circuits and minimizing the frame size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate touch detection circuit is added to the touch display device, then touch detection function is improved, but frame size increases
Solution Approach 1:
The touch detection pins are merged with the bonding pins of the touch display chip, integrating the touch detection function into the existing bonding structure. This eliminates the need for separate touch detection circuits and reduces frame size while maintaining touch detection capability.
Solution Approach 2:
The bonding pins of the touch display chip are given multiple functions: they serve both as bonding connections and as touch detection pins. This multi-functionality allows the same structural elements to perform both bonding and touch detection tasks, avoiding additional frame size increase.
2Reliability
If touch detection pins are separately disposed, then touch detection capability is improved, but manufacturing complexity increases
Solution Approach 1:
The touch detection pins are combined with the bonding pins, reducing the total number of separate components and simplifying the manufacturing process. The integration eliminates the need for separate disposal and connection processes for touch detection pins.
Solution Approach 2:
The bonding pins automatically serve dual purposes without requiring additional setup or configuration. The same pins that perform bonding functions also perform touch detection functions, eliminating the need for separate touch detection pin disposal and reducing manufacturing complexity.
3Length of stationary object
If redundant pins are eliminated in conventional touch display panels, then frame size is reduced, but touch detection before bonding becomes impossible
Solution Approach 1:
The bonding pins are designed to serve multiple functions including pre-bonding touch detection. By making the bonding pins multi-functional, the patent maintains touch detection capability before bonding without requiring additional redundant pins, thus reducing frame size while preserving detection ability.
Solution Approach 2:
The bonding pins are configured to enable touch detection before the bonding process occurs. This preliminary detection capability is built into the bonding pin structure itself, allowing defect identification before bonding without requiring separate redundant pins.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables effective touch detection without increasing the frame size, allowing for identification of defects before bonding and post-bonding support, thereby enhancing manufacturing efficiency and reducing the overall size of the touch display device.
Implementation Method 1
Capacitive touch display devices are widely used, and their basic principle is to use tools such as fingers or stylus to generate capacitance with the touch display devices, and to use electrical signals formed by changes in capacitance before and after touch to confirm whether the touch display devices are touched
Data Source
AI summary
A touch display device includes a touch display panel and a touch display chip. The touch display panel includes a plurality of touch units, a plurality of first touch pins, a plurality of touch signal lines connecting the touch units to the first touch pins, and one or more touch detection pins connected to the first touch pins. The touch display chip includes a plurality of second touch pins corresponding to and connected to the first touch pins, and one or more bonding pins corresponding to and connected to the one or more touch detection pins.