G104XVN01 V0 H line Failure Analysis Report-AU Optronics
Date:2025-10-21
Recently, we had a customer's device G104XVN01 V0 LCD screen experiencing a wire malfunction. They returned it to us for analysis of the cause and after-sales handling. Below we will share the analysis report provided by AU Optronics
Step 1 Problem definition / Improvement subject & Target setup
General Information
No. | Item | Information |
1 | Customer (Site) | Xuhong |
2 | Panel Source | NA |
3 | RMA No. | NA |
4 | Customer Complain | H line |
5 | Project Name/AUO Model (Week Code) | 旭虹/G104XVN01 V0 (24/38) |
6 | AUO S/N(MFG Site | 1V4B83E01TZZZS0110 (S01) |
7 | Receive/Finish Date | 2025-10-09 / 2025-10-13 |
8 | Receive Q’ty | 1 |
9 | Defect rate | (Still waiting for feedback) |
10 | Customer:1.RA or Aging test 2.Reject site | Line reject |
11 | History | Have No Repair History In MA Process |
Step 2
Fact & Data Finding analysis
Failure description
Step 3 Root Cause Analysis and Verification
Root cause analysis and verification
How :
1. When using the AU G104XVN01 V0 fixture to light up normally, the H line was found;
How :
2. Confirm that the appearance of the G104XVN01 V0 LCD is normal;
How :
3. Confirm under OM that the position corresponding to H line is Y=157;
How :
4. Confirm that no abnormalities were found in the IC bonding of the corresponding coordinates under OM;
How :
5.Observation of the cell lead at the corresponding coordinates under OM revealed abnormal lead film formation;
Summary
1. When using the AU G104XVN01 V0 fixture to light up normally, the H line was found;
2. Confirm that the appearance of the G104XVN01 V0 LCD is normal;
3. Confirm under OM that the position corresponding to H line is Y=157;
4. Confirm under OM that no abnormalities were found in the IC bonding corresponding to the coordinates;
5. Observing the cell lead at the corresponding coordinates under OM, abnormal lead film formation was found;
Conclusion
The H line is caused by abnormal cell lead film formation.
