Touch Display Panel Verification Apparatus for Partition Short Detection
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Solution Overview
Problem
Current verification methods for touch display panels are not suitable for the latest models, as they do not effectively check the functionality and potential short connections between divided partitions.
Innovation Solution
A verification apparatus and method that includes a signal generating circuit and verification switch circuit to send verification voltage to multiple divided partitions, allowing for the assessment of their light-emitting conditions to determine normal function and detect short connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If common mode voltage signal (Vcom) is used to light up the display panel for verification, then the verification process can be performed, but it is not suitable for latest models of touch display panels and cannot effectively check short connections between divided partitions
Solution Approach 1:
The verification apparatus divides the display panel into multiple divided partitions and uses separate verification signal lines to apply verification voltages to each partition independently. This segmentation allows for effective detection of short connections between adjacent partitions, resolving the limitation of conventional Vcom-based verification that cannot detect such faults in latest touch display panel models.
2Measurement precision
If separate verification of each divided partition is performed, then short connections can be detected, but the verification process becomes more complex
Solution Approach 1:
The verification apparatus combines multiple verification signal lines into a single verification signal line that can sequentially connect to different divided partitions through a verification switch circuit. This merging approach maintains the ability to perform separate verification of each partition for detecting short connections, while reducing the number of physical verification signal lines required, thus simplifying the overall verification circuit.
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
Enables effective verification of touch display panels by ensuring each partition functions correctly and identifying short connections, improving the manufacturing process by ensuring proper functionality and reducing costs associated with complex driving circuits.
Implementation Method 1
The signal generating circuit is used to generate verification voltage. The verification switch circuit is used to simultaneously send the verification voltage to at least two of the multiple divided partitions, and includes multiple switch units which are coupled to divided partitions and signal generating circuit.
Data Source
AI summary
A verification apparatus and a verification method are suitable for a touch display panel which comprises multiple partitions. The verification apparatus includes signal generating circuit and verification switch circuit. The signal generating circuit is configured to generate a verification voltage. The verification switch circuit comprises multiple switch units which are separately coupled to the partitions and the signal generating circuit, and are configured to deliver verification voltage simultaneously to at least two of multiple partitions.