AUO M106-11 IC Schematic Circuit Diagram & Pinout PDF Datasheet

Welcome to Ornate Pixels! I am M.A. Mustafa, and in this dedicated technical guide, we are going to dive deep into diagnosing and troubleshooting common LED TV display panel faults associated with the AUO M106-11 IC. Whether you are dealing with a blank screen, white screen, no display condition, or frustrating vertical and horizontal lines/bars on the display, understanding this multi-function IC is essential for a successful board-level repair.

The AUO M106-11 is an essential integrated component widely found in high-definition LCD/LED display panels. It serves as both a Logic Level Shifter and an Internal VGH Boost Converter, making it a vital heart of the gate driver sequence. You will frequently find this IC operating on AUO T-Con boards (such as the popular T500HVD02.0 board) as well as display controllers manufactured by Samsung, Sony, LG, Panasonic, and TCL. These boards are extensively used in 40-inch, 43-inch, 50-inch, and 55-inch LED TVs across various models.

In typical circuit designs, the M106-11 relies heavily on external supply rails—such as receiving VGL and VSS voltages from the primary PMIC (e.g., P301-16 IC) to perform its logic level shifting and timing signal processing smoothly. When any of these rail inputs or internal boost functions fail, the entire gate control mechanism collapses, resulting in severe display artifacts.

To make your diagnostic and servicing work easier, I have drawn and attached a comprehensive Schematic Circuit Diagram of the AUO M106-11 IC below. Alongside the schematic, you will also find the complete Pinout Table, CKV Signal Mapping, and Working Voltages to help you troubleshoot with high confidence.

M106-11 Schematic Circuit Diagram & PDF Datasheet Insights

Because official manufacturer documentation for specialized level shifter ICs can be hard to find, technicians often rely on a reverse-engineered PDF datasheet reference to understand pin functions, internal VGH boost behaviors, and safe operating voltages. To make your diagnostic and servicing work easier, I have drawn and attached a comprehensive schematic circuit diagram of the AUO M106-11 IC below. Alongside the schematic, you will also find the complete pinout table, CKV signal mapping, and working voltages to help you troubleshoot with high confidence.

AUO M106-11 IC schematic circuit diagram showing the VGH boost converter, 12V input, and pinout mapping. Complete schematic circuit diagram and VGH boost converter layout for the AUO M106-11 level shifter IC.

Pro Tip for Technicians: Curious about the fundamentals? Read our detailed guide on What is a logic level shifter, and what is its function in a display?

Complete schematic circuit diagram and VGH boost converter layout for the AUO M106-11 level shifter IC.

AUO M106-11 Pinout and Signal Mapping Table

Troubleshooting & Repair Guide for AUO M106-11 IC Faults

Hello fellow technicians! As someone who has spent decades sitting at the repair bench handling stubborn LED and LCD TV display panels, I know how frustrating a distorted screen or blank display can be. When working with the AUO M106-11 level shifter IC, a systematic approach to checking pin voltages and signal paths will save you hours of guesswork. Let's dive right into the practical troubleshooting guide.

Understanding HC1 to HC6 (CKV) Signals & Panel Routing

In AUO display panels, the high-voltage gate driver clock signals are commonly designated as HC1, HC2, HC3, which are universally recognized as CKV (Clock Vertical) signals. These vital CKV tracking lines originate directly from the M106-11 IC, traveling to the right side of the panel while simultaneously branching out to the left side via the source COF (Chip on Film) flexible printed circuits.

If you want to dive deeper into how these gate signals and common electrodes interact inside the panel glass, be sure to read my detailed guide: What is CKV1, CKV2, CKVB, CKVB2 And Common Electrode of LCD?

Critical Pin Functions and Missing Voltage Symptoms

Before jumping into component-level repairs, always measure these crucial pins around the M106-11 IC using your multimeter:

• Pin 39 (YD-I/O): Acts as a bi-directional data/feedback line. If missing: Synchronization between the T-Con and panel rows fails, leading to frozen pictures or a complete "No Display" condition.
• Pin 40 (YCLK): Custom gate scanning clock input. If missing: Gate pulses are not generated, resulting in a dead, blank black screen.
• Pin 24 (VGHM): Modulated high-voltage gate-on supply. If missing: Pixels fail to charge or refresh properly, causing severe image ghosting or screen flickering.
• Pins 9 & 10 (VGL from PMIC): Negative gate-off voltage supply (typically -5V to -10V). If missing: Pixels cannot discharge correctly, causing a washed-out, bright white screen.
• Pin 7 (VSS): Internal circuit reference and negative power supply ground. If missing: The level shifter logic shuts down completely, often causing the IC to overheat.

Common Display Faults and Step-by-Step Repair Solutions

1. White Screen (Washed-out / Bright White Display)

Why it happens: Usually caused by missing VGL voltage (Pins 9 & 10), a voltage drop on the logic power supplies VDD-A/VDD-B (Pins 1 & 2), or a failed PMIC handshake, leaving all pixels stuck fully open.

Repair Method: Measure the input voltages at VGL and AVDD. Check for open-circuit surface-mount resistors or faulty filtering capacitors around the power rail. Ensure the PMIC is delivering stable input rails to the M106-11.

2. Black Screen / No Display Condition

Why it happens: Often triggered by a failure in the internal VGH boost converter section (Pin 30 switch node, boost inductor L1, or diode D1) or missing YCLK/TRIG_IN signals preventing gate driver activation.

Repair Method: Check the switching node (SW - Pin 30) with a multimeter or oscilloscope. Inspect boost diode D1 and inductor L1 for open circuits or shorted conditions. Replace any damaged passive components around the boost circuit.

3. Vertical Lines / Colored Bars on Screen

Why it happens: Signal corruption or partial shorting along the HC1 to HC6 (CKV1–CKV6) lines, or internal gate short circuits within the thin-film transistor glass matrix.

Repair Method: Verify continuity along the clock output traces. If a CKV line is internally shorted inside the glass panel, you will need to apply the CKV isolation technique explained below.

4. Screen Flickering, Ghosting, or Double Image

Why it happens: Occurs due to CKV signal overlap, timing mismatch, or internal gate degradation on one side of the panel matrix.

Repair Method (The CKV Blocking / Tracing Method):
When dealing with stubborn flickering or double images caused by the M106-11 circuit, you can isolate the faulty side:
Step 1: Carefully disconnect or isolate the six clock lines running from OUT_H1 (CKV1) to OUT_H6 (CKV6) on one side of the panel (either by cutting the PCB traces carefully or masking the corresponding pins on the flex ribbon cable using insulating tape).
Step 2: Power on and check the screen. If the image is clear, you've solved it! If the flickering persists or gets worse, restore those traces and isolate the opposite side's six CKV lines using the same method.
Pro Tip: In 90% of AUO panel cases, blocking the shorted side instantly restores a crystal-clear picture!

Watch Practical Video Tutorial: AUO Panel CKV Blocking Method

For a hands-on practical demonstration on how to successfully isolate CKV lines, fix screen flickering, and remove vertical lines on a 43-inch AUO display panel, watch my step-by-step repair video below: