LS126I01-E-V1: 12.61-INCH A-SI TFT-LCD MODULE, FHD 1920×515 RESOLUTION, 16.7M COLORS, EDP 1.2 INTERFACE (2-LANE, 2.7GBPS), 30-PIN, BUILT-IN LED DRIVER, NORMALLY BLACK, NOTEBOOK TOUCH BAR APPLICATION, L45% NTSC COLOR GAMUT
PRODUCT SUBTITLE / KEYWORDS
12.61 INCH DISPLAY, 1920(RGB)×515 FHD RESOLUTION, TRANSMISSIVE A-SI TFT-LCD, NORMALLY BLACK MODE, EDP 1.2 INTERFACE (2 LANE WITH 2.7GBPS LINK RATE), COG+FPC+B/L MODULE TYPE, 16.7M COLORS (8-BIT), 30-PIN CONNECTOR, 3.3V LCD LOGIC POWER, LED BACKLIGHT WITH BUILT-IN DRIVER, 5V~21V BACKLIGHT INPUT, 0°C~+60°C OPERATING TEMPERATURE, -20°C~+65°C STORAGE TEMPERATURE, WHITE LED BACKLIGHT (IF=13.6MA), 15,000 HOURS LED LIFETIME, LOW REFLECTION HIGH COLOR TYPE, SIDE MOUNTING FRAME, LESSON SMART DISPLAY TECHNOLOGY, EDID CHIP ON BOARD, DPCD VERSION 1.4, SINGLE LED LIGHTING BAR BOTTOM SIDE
1. EXECUTIVE SUMMARY AND PRODUCT POSITIONING
The LS126I01-E-V1, developed by Lesson Smart Display Technology Co., Ltd. (立信(万安)智显科技有限公司), is a 12.61-inch transmissive type color active matrix TFT-LCD (amorphous silicon thin film transistor liquid crystal display) module.
This product specification (Revision P2, Final Specification) serves as the definitive technical document, defining its structural composition (COG+FPC+B/L), general description, physical features, absolute maximum ratings, electrical characteristics, optical specifications, and complete eDP 1.2 interface pinout (30-pin). It delivers a high-definition resolution of 1920(RGB)×515 (FHD) with 16.7M-color (8-bit) display capability. The module features a low reflection and higher color type TFT-LCD panel, making it particularly suitable for applications requiring crisp text and vibrant visuals in a unique elongated format.
The document provides the core parameters necessary for system integration into embedded display applications requiring a mid-size elongated high-resolution display with a standard high-speed embedded display interface. The unequivocal recommendation for engineers is to strictly adhere to the electrical specifications, interface timing, and mechanical tolerances described herein to ensure reliable performance and compatibility with the driving circuit and backlight unit.
2. DETAILED PRODUCT OVERVIEW AND ARCHITECTURE
- Core Technology: Color active matrix TFT-LCD using amorphous silicon TFT's as active switching devices. Composed of TFT-LCD panel, driver circuit and backlight unit.
- Display Mode: Transmissive type, Normally Black mode with low reflection and higher color type panel.
- Display Format: Graphic 1920(RGB)×515 pixel array (FHD format).
- Display Characteristics: Capable of displaying up to 16.7 million colors (8-bit) with color gamut of 45% NTSC.
- Module Construction: COG (Chip-On-Glass) + FPC (Flexible Printed Circuit) + B/L (Backlight Unit) as per general description.
- Interface Type: eDP (Embedded DisplayPort) 1.2 interface with 2 lanes at 2.7Gbps link rate.
- Connector Pin Count: 30-Pin (mating connector UJU IS050-L30B-C10).
- Backlight LED: Single LED lighting bar (Bottom side/Horizontal) with built-in LED driving circuit. LED forward current IF=13.6mA typical.
- Special Features: Side mounting frame, green product (RoHS and Halogen free), on board EDID chip, DPCD Version 1.4, SDRRS(on)/CABC(on)/LED PFM MODE(off).
- Approval Status: Final Specification (Checked) as per document header Revision P2.
3. EXHAUSTIVE TECHNICAL SPECIFICATIONS
3.1 GENERAL SPECIFICATIONS TABLE
| PARAMETER | SPECIFICATION | UNIT | NOTE |
|---|---|---|---|
| Panel Size (Diagonal) | 12.61 | inch | Measured diagonally |
| Number of Dots / Resolution | 1920(RGB) x 515 | pixels | FHD format |
| Display Type | a-Si TFT, Transmissive, Normally Black | - | Low reflection type |
| Module Type | COG+FPC+B/L | - | Integrated construction |
| Display Colors | 16.7M | colors | 8-bit RGB signal input |
| Pixel Arrangement | RGB Vertical Stripe | - | Standard stripe |
| Interface Type | eDP (Embedded DisplayPort) 1.2 | - | 2-Lane data + AUX, 2.7Gbps link rate |
| Backlight Type | White LED, Edge Light, Single Bar | - | Bottom side, Built-in driver |
| Color Gamut | 45% NTSC | % | Typical |
| Operating Temperature | 0 to +60 | °C | Ambient temperature |
| Storage Temperature | -20 to +65 | °C | Non-condensing |
3.2 MECHANICAL AND PHYSICAL SPECIFICATIONS
The mechanical specifications are precisely defined in the outline drawing section (Section 15.0) of the specification document. The active area measures 309.312 mm (H) by 82.9665 mm (V). The pixel pitch is 0.0537 mm (H) by 0.1611 mm (V), which corresponds to a unique aspect ratio suitable for specific applications like notebook touch bars. The dimensional outline of the module is 315.61±0.3 mm (width) by 94.02±0.5 mm (height). The maximum weight is 175 grams. The top polarizer is the highest part of the module. The curve specification is ±0.5 mm. The module is designed with a side mounting frame for easy integration. General tolerance for all other dimensions is ±0.3 mm. The surface treatment of the front polarizer includes specific hardness characteristics. The connector location (UJU IS050-L30B-C10 or compatible) is fixed on the edge of the FPC, as shown in the layout diagram.
3.3 ELECTRICAL AND INTERFACE SPECIFICATIONS
3.3.1 ABSOLUTE MAXIMUM RATINGS (Ta=25°C±2°C)
| PARAMETER | SYMBOL | MIN. | MAX. | UNIT | REMARK |
|---|---|---|---|---|---|
| Power Supply Voltage | VDD | -0.3 | 4.0 | V | Note 1 |
| eDP Input Voltage | VeDP | 0 | 1.2 | V | Note 1 |
| Logic Supply Voltage | VIN | VSS-0.3 | VDD+0.3 | V | Note 1 |
| Operating Temperature | TOP | 0 | +60 | °C | Note 2 |
| Storage Temperature | TST | -20 | +65 | °C | Note 2 |
3.3.2 ELECTRICAL SPECIFICATIONS (Ta=25°C±2°C)
| PARAMETER | SYMBOL | MIN. | TYP. | MAX. | UNIT | REMARK |
|---|---|---|---|---|---|---|
| Power Supply Voltage | VDD | 3.0 | 3.3 | 3.6 | V | Note 1 |
| Permissible Input Ripple Voltage | VRF | - | - | 100 | mV | @ VDD=3.3V |
| Power Supply Current (Mosaic) | IDD | - | 136 | 152 | mA | Mosaic pattern 8x4 |
| Power Supply Current (RGB) | IDD | - | 273 | 303 | mA | RGB pattern |
| Power Consumption (Mosaic) | PM | - | - | 0.5 | W | Note 1 |
| Power Consumption (RGB) | PRGB | - | - | 1.0 | W | Note 1 |
| Power Consumption (BLU) | PBL | - | - | 2.4 | W | Note 2 |
| Power Consumption (Total) | PTotal | - | - | 2.9 | W | @Mosaic |
3.3.3 BACKLIGHT DRIVING GUIDELINE SPECIFICATIONS (Ta=25°C±2°C)
| PARAMETER | SYMBOL | MIN. | TYP. | MAX. | UNIT | REMARK |
|---|---|---|---|---|---|---|
| LED Forward Voltage | VF | - | - | 2.9 | V | - |
| LED Forward Current | IF | - | 13.6 | - | mA | - |
| LED Power Input Voltage | VLED | 5 | 12 | 21 | V | - |
| LED Power Input Current | ILED | - | - | 200 | mA | Note 1 |
| LED Power Consumption | PLED | - | - | 2.4 | W | Note 1 |
| LED Life-Time | N/A | 15,000 | - | - | Hour | IF=13.6mA, Note 2 |
| EN Control High Level (Backlight On) | VBL_EN | 1.8 | 2.5 | 5.0 | V | - |
| PWM Control High Level | VBL_PWM | 1.8 | 2.5 | 5.0 | V | - |
| PWM Control Low Level | VBL_PWM | 0 | - | 0.5 | V | - |
3.3.4 EDP INTERFACE PIN ASSIGNMENT (30-PIN CONNECTOR)
| PIN NO. | SYMBOL | I/O | DESCRIPTION | REMARK |
|---|---|---|---|---|
| 17 | ASUSD | O | Hot plug detect output | HPD signal |
| 18-21 | BL_GND | P | LED Ground | Backlight return |
| 22 | BL_ENABLE | I | LED enable pin (+3.3V Input) | Backlight On/Off |
| 23 | BL_PWM | I | System PWM Signal Input | Brightness dimming |
| 26-29 | BL_POWER | P | LED Power Supply 5V-20V | Input power for BL |
| 24,25,30 | NC | - | No Connection | Keep open |
Note: I = Input, O = Output, P = Power. The mating connector part number is UJU IS050-L30B-C10. Pins 1 through 16 are common eDP high-speed signal and power pins as per standard specification.
3.4 OPTICAL SPECIFICATIONS (Ta=25°C±2°C)
| PARAMETER | SYMBOL | CONDITION | MIN. | TYP. | MAX. | UNIT | REMARK |
|---|---|---|---|---|---|---|---|
| Viewing Angle Horizontal (Left/Right) | Θ3/Θ0 | CR > 10 | 80 | 85 | 89 | Deg. | Note 1 |
| Viewing Angle Vertical (Up/Down) | Θ12/Θ6 | CR > 10 | 80 | 85 | 89 | Deg. | Note 1 |
| Luminance Contrast Ratio | CR | Θ = 0° | 1000 | 1200 | - | - | Note 2 |
| Luminance of White (5 Points) | Yw | Θ = 0°, ILED = 13.6mA | 340 | 400 | - | cd/m2 | Note 3 |
| White Luminance Uniformity (5 Points) | ΔY5 | Θ = 0° | 80 | - | - | % | Note 4 |
| White Luminance Uniformity (13 Points) | ΔY13 | Θ = 0° | 67 | - | - | % | Note 4 |
| White Chromaticity (x) | Wx | Θ = 0° | 0.278 | 0.308 | 0.338 | - | Note 5 |
3.5 SIGNAL TIMING SPECIFICATION (DE ONLY MODE)
| ITEM | SYMBOL | MIN | TYP | MAX | UNIT |
|---|---|---|---|---|---|
| Clock Frequency | 1/Tc | - | 70.6 | - | MHz |
| Frame Period | Tv | - | 565 | - | lines |
| Frame Rate | - | - | 60 | - | Hz |
| Vertical Display Period | Tvd | - | 515 | - | lines |
| One Line Scanning Period | Th | - | 2080 | - | clocks |
| Horizontal Display Period | Thd | - | 1920 | - | clocks |
3.6 HPD CHARACTERISTICS
| ITEM | SYMBOL | MIN | TYP | MAX | UNIT | REMARK |
|---|---|---|---|---|---|---|
| HPD Voltage | VHPD | 2.5 | 2.8 | 3.6 | V | - |
| Hot Plug Detection Threshold | - | 2.0 | - | - | V | Source side |
| Hot Unplug Detection Threshold | - | - | - | 0.8 | V | Source side |
| HPD IRQ Pulse Width | HPD_IRQ | 0.5 | - | 1 | ms | - |
| HPD TimeOut | - | 2.0 | - | - | ms | - |
4. BACKLIGHT SYSTEM AND PWM DIMMING
The backlight unit uses a single edge-lit LED lighting bar mounted at the bottom side of the panel (horizontal orientation). Unlike many modules that embed the backlight driver externally, the LS126I01-E-V1 features an on-board LED driving circuit that simplifies the system design. The backlight power supply is provided through pins 26-29 (BL_POWER) with a typical voltage of 12V DC and a range from 5V to 21V. The ground return is through pins 18-21 (BL_GND). The backlight ON/OFF control (BL_ENABLE, pin 22) is an active high input that enables the built-in LED driver. Brightness dimming is achieved via a PWM signal applied to pin 23 (BL_PWM). The typical control levels are 2.5V for high and below 0.5V for low. The LED forward current is set at 13.6mA typical. The LED lifetime is rated at 15,000 hours typical, defined as the estimated time to 50% degradation of initial luminous flux. The inrush current of the LED driver must be considered during system power supply design.
5. POWER ON/OFF SEQUENCE AND LINK TRAINING
The power-on and power-off sequence must be strictly followed to prevent damage to the module and ensure proper initialization. The timing diagram in the specification shows the relationship between LCD logic power (VDD), backlight power (VLED), eDP display signals, and backlight enable signals. When the power supply VDD is 0V, keep the level of input signals on the low or keep high impedance. Do not keep the interface signal high impedance when power is on. The backlight must be turned on only after the logic power and interface signals are valid. The HPD (Hot Plug Detect) signal output from the module to the source device indicates that the sink is ready for link training. The source must then initiate the link training procedure according to DPCD specification. The module supports DPCD Version 1.4 with SDRRS (on), CABC (on), and LED PFM MODE (off). The link rate is 2.7Gbps per lane, and the link configuration uses 2 lanes. The AUX channel is used for sideband communication such as EDID reading and link management. The EDID chip is built into the module, providing the necessary display identification data.
6. RELIABILITY AND ENVIRONMENTAL TEST CONDITIONS
The LS126I01-E-V1 module has been designed and tested to meet high reliability standards. The following environmental tests are performed to validate performance under stress conditions as defined in Section 11.0 of the specification: High temperature storage at +65°C for 72 hours, low temperature storage at -20°C for 72 hours, high temperature operation at +60°C for 72 hours, low temperature operation at 0°C for 72 hours, and temperature cycling between -20°C and +65°C for 10 cycles. The module withstands these conditions without degradation in optical or electrical performance. The humidity test at 40°C and 90% relative humidity for 72 hours ensures resistance against moisture. The module is also tested for vibration and shock resistance according to standard industrial requirements. These tests confirm the product's suitability for use in moderate environments such as notebook touch bars, portable companion displays, and information kiosks.
7. APPLICATION SCENARIO
The unique 12.61-inch diagonal size with an elongated FHD resolution of 1920x515 pixels (aspect ratio approximately 3.73:1) makes the LS126I01-E-V1 particularly suitable for applications requiring a wide and relatively narrow display. The primary application, as indicated in the specification, is the Notebook Touch Bar, a secondary display strip that enhances user interaction by providing context-sensitive controls and information. The built-in LED driver and EDID chip simplify integration into laptop and ultrabook designs. Beyond this specific use case, the module can be used in other applications such as advertisement display strips, instrument panels for automotive or marine use, industrial control panels with limited height requirements, gaming peripherals, and custom embedded systems that require a unique display format. The low reflection and higher color type panel ensures good readability and vibrant colors in varied lighting conditions. The side mounting frame allows for easy mechanical integration. The module's operating temperature range of 0°C to +60°C supports indoor use in typical commercial environments. The 15,000-hour LED lifetime is suitable for products with moderate daily usage. The eDP 1.2 interface with 2 lanes provides a simple and high-bandwidth connection suitable for FHD content at 60Hz.
8. HANDLING PRECAUTIONS AND COMPLIANCE
The LCD panel is constructed of glass and is fragile. The polarizer surface is easily scratched. The module should be handled with care to avoid applying pressure on the display area. ESD (Electrostatic Discharge) protection is mandatory throughout handling and assembly. The module should be stored in a clean, dry environment away from direct sunlight and corrosive gases. The recommended storage conditions are within the specified temperature and humidity ranges with no condensation. This module is a green product (RoHS and Halogen free), ensuring environmentally safe materials and manufacturing processes. All packaging materials are designed to protect the module during shipping and handling. The module label (Bar code label, Revision P2) includes model number, date code, and barcode for traceability. The warranty period and terms are defined by the manufacturer. The user is responsible for designing the cabinet to avoid mechanical stress and for maintaining proper ventilation around the module. It is strongly recommended to read the full specification document (LS126I01-E-V1 Product Specification Rev. P2) before integration and to test the module under application-specific conditions to verify compatibility and performance. The manufacturer disclaims liability for damages resulting from improper use or modification. The module is not intended for use in life support systems or critical medical equipment unless explicitly approved.
