The LED display test report process generally revolves around test preparation → test execution → data processing → report output → review and archiving. Based on common industry practices (project acceptance, factory inspection, third-party testing), the complete process typically includes the following steps:
I. Test Requirements Confirmation and Preparation Stage
Purpose: To clarify the test scope and standards, avoiding test deviations.
Confirm Test Purpose
Factory Quality Inspection
Project Acceptance Testing
Third-Party Certification (e.g., CE, CCC)
Troubleshooting or Performance Evaluation
Confirm Implementation Standards
National Standards (e.g., GB/T 29490, SJ/T 11281)
Industry Standards
Customer Technical Agreements or Contract Requirements
Test Plan Development
Test Item List
Test Methods and Judgment Criteria
Test Environment Requirements (Temperature, Humidity, Power Supply, etc.)
Sample and Document Preparation
LED Display Screen Samples (Model, Batch, Quantity)
Technical Specifications, BOM, Drawings
Calibrated Testing Instruments
II. Test Environment and Equipment Validation
Purpose: To ensure test conditions meet standard requirements
Environmental Condition Records
Temperature, Humidity
Lighting Conditions (Brightness/Colorimetry testing is particularly critical)
Equipment Calibration Check
Luminometer, Colorimeter
Oscilloscope, Power Supply, Signal Generator
Aging Test Equipment
Pre-Test Inspection
Display Screen Installation Status
Power Supply and Signal Connection Correctness
Software and Control System Version Confirmation
III. Test Execution Phase (Core)
Test each item according to the test plan and record the data.
Common test items include:
1. Appearance and Structural Inspection
Module splicing consistency
No deformation or damage to the mask and cabinet
Integrity of markings and interfaces
2. Optical Performance Testing
Brightness (maximum brightness, uniformity)
Chromaticity coordinates, color temperature
Contrast Ratio
Viewing Angle (Horizontal/Vertical)
3. Electrical Performance Testing
Input Voltage Range
Power Consumption (Max/Average)
Grounding and Insulation Performance
4. Display Performance Testing
Grayscale Level
Refresh Rate
Flicker-free, Ghost-free
Dead Pixel Rate Testing
5. Functional and Reliability Testing
Power-on/off Test
Continuous Aging Test (24h / 48h / 72h)
High and Low Temperature Operation Test (if applicable)
6. Safety and EMC Testing (if applicable)
Leakage Current
Withstand Voltage Test
Electromagnetic Compatibility (Radiated, Conducted)
Original data recording is required for each test. Judgment Conclusion (Pass/Fail)
IV. Data Processing and Analysis
Purpose: To generate traceable and verifiable test results.
Data Summary
Original Data Table
Average, Maximum/Minimum Value Calculation
Data Comparison
Comparison with Standard Limits
Comparison with Technical Specifications
Anomaly Analysis
Explanation of Reasons for Non-conformities
Whether Retesting or Rectification is Required
V. Test Report Compilation
Generate a formal "LED Display Screen Test Report"
Typically includes the following:
Cover Information
Report Number
Product Name, Model
Client/Project Name
Testing Institution
Basic Information
Sample Description
Testing Standards
Test Date and Location
Testing Conditions
Environment Conditions
Test Equipment List (including calibration status)
Test Results
Test Item Table
Data and Conclusions
Images or Curves (e.g., brightness distribution diagram)
Conclusions and Judgments
Compliance with Relevant Standards
Limitations (e.g., responsible only for the sample)
Signature Page
Testing Personnel
Reviewers
Approvers
VI. Review, Release, and Archiving
Ensuring the report's authority and traceability
Internal Technical Review
Approval by Quality or Authoritative Department
Official Report Release (Paper/Electronic Version)
Document Archiving and Numbering Management
VII. Rectification and Retesting When Necessary (Optional)
Rectification of Non-conformities
Retesting and Verification
Issuance of Supplementary Report or Retesting Instructions
Brief Flowchart
Requirements Confirmation
↓ Test Plan Development
↓ Environment and Equipment Confirmation
↓ Test Execution
↓ Data Processing and Analysis
↓ Test Report Compilation
↓ Review, Release, and Archiving