Display Device Security via Contact Pin Verification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices lack a secure mechanism to prevent unauthorized operation and technology leakage, particularly when disassembled, as existing solutions do not effectively control the driving of display panels based on security signals.
Innovation Solution
A display device configuration that includes a module frame with contact pins and a Printed Circuit Board (PCB) with pads, where the driver IC operates only when the pads contact the pins, generating specific voltages and control signals based on a security signal, and includes a security circuit to ensure the display panel is driven only when the signal meets a certain voltage level, preventing operation when disassembled.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the display device is designed to allow easy disassembly for maintenance or repair, then the ease of repair is improved, but the security against unauthorized operation and technology leakage deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-configuring the contact pins and pads to establish a security verification mechanism before operation. The driver IC is designed to check for proper contact between pins and pads before enabling display panel operation, preventing unauthorized use before it can occur
Solution Approach 2:
The contact pins and pads serve as an intermediary security mechanism between the module frame and the driver IC. This intermediary structure verifies proper assembly through electrical contact, allowing legitimate repair while blocking unauthorized operation
2Reliability
If the display device includes security verification circuitry to prevent unauthorized operation, then the security is improved, but the device complexity increases
Solution Approach 1:
The driver IC performs multiple functions: it drives the display panel normally and simultaneously performs security verification by detecting contact between pins and pads. This multi-functionality eliminates the need for separate security circuitry, maintaining simplicity while providing security
Solution Approach 2:
The security verification function is merged with the existing driver IC circuitry. The contact detection and display driving functions are combined in a single integrated circuit, avoiding additional components and reducing overall device complexity
Data Source
AI summary
A display device includes a display panel, a module frame having first and second contact pins, and a Printed Circuit Board (PCB) having first and second pads connectable with the first and second contact pins of the module frame, respectively, in a contacting state and disconnectable therewith in a non-contacting state. The first and second contact pins are electrically connected to each other. The PCB includes a circuit block in a non-operational state when the first and second pads are in the non-contacting state with the first and second contact pins of the module frame, respectively.