Touch Display Panel Automatic Firmware Recording
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Solution Overview
Problem
In the manufacturing of touch display panels, human errors often lead to firmware version mismatches between touch glass, touch controllers, and display panels, requiring costly rework and potential damage during assembly, as each combination necessitates specific firmware for correct touch action determination.
Innovation Solution
A touch display panel system where the touch controller and display panel report their respective product information to a host, which retrieves and writes corresponding firmware and noise offset values to non-volatile memory, allowing the touch controller to execute the firmware and determine touch actions accurately, eliminating the need for manual firmware updates and reducing rework.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If manual firmware installation is used before assembly, then firmware can be installed in advance, but human errors cause firmware version mismatches requiring costly rework
Solution Approach 1:
The patent applies preliminary action by obtaining product information and retrieving corresponding firmware before the touch glass is pressed to the display panel. The host retrieves firmware based on product information from the touch controller and display panel, then writes it to non-volatile memory in advance, ensuring the correct firmware is installed before assembly occurs.
Solution Approach 2:
The patent implements feedback by having the touch controller and display panel report their product information to the host, which then uses this information to automatically retrieve and install the correct firmware. This closed-loop feedback mechanism ensures the firmware matches the specific combination of components being assembled.
2Reliability
If firmware is updated after touch glass is pressed to display panel, then correct firmware can be installed for the specific combination, but rework is needed requiring separation of components
Solution Approach 1:
The patent performs firmware installation as a preliminary action before the touch glass is pressed to the display panel. The host writes the firmware to non-volatile memory of the touch controller before assembly, eliminating the need for subsequent rework and component separation.
Solution Approach 2:
The system performs self-service by automatically obtaining product information from the touch controller and display panel, retrieving the corresponding firmware, and writing it to non-volatile memory without requiring manual intervention or rework. The touch controller automatically reads and executes the firmware after it is written.
3Reliability
If rework is performed to update firmware after assembly, then firmware can be corrected, but damage may occur to touch glass or display panel
Solution Approach 1:
The patent performs firmware installation as a preliminary action before the touch glass is pressed to the display panel. By completing the firmware write operation to non-volatile memory before assembly, the patent eliminates the need for rework that would require separating components and risks damaging the touch glass or display panel.
Solution Approach 2:
The system performs self-service by automatically obtaining product information from the touch controller and display panel, retrieving the corresponding firmware, and writing it to non-volatile memory without requiring manual intervention or rework. The touch controller automatically reads and executes the firmware after it is written.
4Reliability
If automatic firmware retrieval is implemented, then firmware installation accuracy is improved, but system complexity increases due to host-controller-panel coordination
Solution Approach 1:
The host performs multiple functions including obtaining product information from the touch controller and display panel, retrieving the corresponding firmware, and writing it to non-volatile memory. This multi-functional approach consolidates coordination complexity into a single controller while maintaining high installation accuracy.
Solution Approach 2:
The patent implements feedback by having the touch controller and display panel report their product information to the host, which then uses this information to automatically retrieve and install the correct firmware. This automated feedback loop improves accuracy while the host manages the coordination complexity.
Data Source
AI summary
A touch display panel is provided. The touch display panel includes: a display panel, a touch glass, and a touch controller. The display panel includes sensing lines and identification pins. The touch controller obtains first product information of the touch glass. The touch controller and the display panel respectively report the first product information of the touch glass and second product information of the display panel to a host. The host retrieves firmware and a default noise offset value corresponding to the touch display panel according to the first product information and the second product information, and writes the firmware and default noise offset value to a non-volatile memory of the touch display panel. The touch controller executes the firmware, and determines touch actions performed on the touch glass according to the default noise offset value.