LS156I05-E-V1: 15.6-inch Transmissive a-Si TFT-LCD Module, FHD 1920×1080 Resolution, 262K Colors (6-bit), eDP Interface, 30-Pin, Normally Black, Lesson Smart Display Technology
Product Subtitle / Keywords
15.6 Inch Display, 1920(RGB)×1080 FHD Resolution, Transmissive Type a-Si TFT-LCD (amorphous silicon thin film transistor liquid crystal display), Normally Black Mode, eDP Interface, COG+FPC+B/L Module Type, 262K Colors (6-bit), 30-Pin Connector (CT W05030-30P-H), 3.3V Typical Logic Supply, 5V-21V Typical Backlight Supply, 0°C~+50°C Operating Temperature, -20°C~+60°C Storage Temperature, White LED Backlight (Built-in Driver, 55 LEDs, 11*5 Configuration), 280 cd/m² Typical Luminance, 1000:1 Typical Contrast Ratio, 85° Typical Viewing Angle, Lesson Smart Display Technology
1. Executive Summary And Product Positioning
The LS156I05-E-V1, developed by Lesson Smart Display Technology Co., Ltd. (立信(万安)智显科技有限公司), is a 15.6-inch transmissive type a-Si TFT-LCD (amorphous silicon thin film transistor liquid crystal display) module. It is composed of a TFT-LCD panel, a driver circuit, and a backlight unit, designed for high-definition display applications.
This product specification (Revision 1.0) serves as the definitive technical document, defining its structural composition (COG+FPC+B/L), general description, physical features, absolute maximum ratings, electrical characteristics, module function description, and electro-optical characteristics. It supports a Full-HD resolution of 1920(RGB)×1080 and can display up to 262K colors (6-bit).
The document provides the core parameters necessary for system integration into applications requiring a standard 15.6-inch FHD display with an eDP 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: Transmissive type a-Si TFT-LCD using amorphous silicon thin film transistors as the active switching device.
- Display Mode: Transmissive type.
- Display Format: Graphic 1920(RGB)×1080 pixel array (FHD format).
- Display Characteristics: Capable of displaying up to 262K colors (6-bit).
- Module Construction: COG (Chip-On-Glass) + FPC (Flexible Printed Circuit) + B/L (Backlight Unit).
- Interface Type: eDP (Embedded DisplayPort) interface.
- Connector Pin Count: 30-Pin (main connector CT W05030-30P-H).
- Backlight LED: White LED backlight with built-in driver. LED configuration is 11*5 = 55 PCS.
- Special Features: FHD resolution, 262K color display capability, wide viewing angle (85° typical).
- Approval Status: Approved Product Specification only (Revision 1.0).
3. Exhaustive Technical Specifications
3.1 General Specifications Table
| Parameter | Specification | Unit |
|---|---|---|
| Panel Size (Diagonal) | 15.6 | inch |
| Number of Dots / Resolution | 1920(RGB) x 1080 | pixels |
| Display Type | Transmissive type a-Si TFT-LCD | - |
| Module Type | COG+FPC+B/L | - |
| Display Colors | 262K | colors |
| Pixel Arrangement | RGB Vertical Stripe | - |
| Interface Type | eDP (Embedded DisplayPort) | - |
| Backlight Type | White LED, Edge Light | - |
| Operating Temperature | 0 to +50 | °C |
| Storage Temperature | -20 to +60 | °C |
3.2 Mechanical Specifications
| Parameter | Specification | Unit |
|---|---|---|
| Module size (H×V×D) | 350.7 × 215.89 × 3.2 | mm |
| Number of dots | 1920(RGB) × 1080 | pixel |
| Active area (H×V) | 344.16 × 193.59 | mm |
3.3 Electrical And Interface Specifications
3.3.1 Absolute Maximum Ratings (Ta=25°C±2°C)
| Parameter | Symbol | Min. | Max. | Unit |
|---|---|---|---|---|
| Power Supply Voltage | VDD | -0.3 | 4.0 | V |
| eDP input Voltage | VeDP | 0 | 2.0 | V |
| Logic Supply Voltage | VIN | VSS-0.3 | VDD+0.3 | V |
| Operating Temperature | TOP | 0 | +50 | °C |
| Storage Temperature | TST | -20 | +60 | °C |
3.3.2 LCD Drive Electrical Characteristics (Ta=25°C±2°C)
| Parameter | Symbol | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| Power Supply Voltage | VDD | 3.0 | 3.3 | 3.6 | V |
| Permissible Input Ripple Voltage | VRF | -10% VDD | - | +10% VDD | V |
| Power Supply Inrush Current | Inrush | - | - | 2 | A |
| Power Supply Current (Mosaic) | IDD | - | - | 273 | mA |
| Power Supply Current (RGB) | IDD | - | - | 545 | mA |
| Power Consumption (Mosaic) | PM | - | - | 0.9 | W |
| Power Consumption (RGB) | PRGB | - | - | 1.8 | W |
| Power Consumption (Total) | PD | - | - | 0.9 | W |
3.3.3 Backlight Control Characteristics (Ta=25°C±2°C)
| Parameter | Symbol | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| EN Control Level (Backlight On) | VBL_EN | 2.5 | - | 5.0 | V |
| EN Control Level (Backlight Off) | VBL_EN | 0 | - | 0.5 | V |
| PWM Control Level (High) | VBL_PWM | 2.5 | - | 5.0 | V |
| PWM Control Level (Low) | VBL_PWM | 0 | - | 0.5 | V |
| PWM Control Frequency | FPWM | 200 | - | 2000 | Hz |
| Duty Ratio | - | 5 | - | 100 | % |
3.3.4 EDP Interface Pin Assignment (CN1 30-Pin, CT W05030-30P-H)
| Pin No. | Symbol | I/O | Description |
|---|---|---|---|
| 1 | CABC_EN | I | CABC Function (Disable) |
| 2 | H_GND | P | Ground |
| 3 | LANE1_N | I | eDP RX Channel 1 Negative |
| 4 | LANE1_P | I | eDP RX Channel 1 Positive |
| 5 | H_GND | P | Ground |
| 6 | LANE0_N | I | eDP RX Channel 0 Negative |
| 7 | LANE0_P | I | eDP RX Channel 0 Positive |
| 8 | H_GND | P | Ground |
| 9 | AUX_CH_P | I/B | eDP AUX CH Positive |
| 10 | AUX_CH_N | I/B | eDP AUX CH Negative |
| 11 | H_GND | P | Ground |
| 12 | LCD_VCC | P | Power Supply, 3.3V (typ.) |
| 13 | LCD_VCC | P | Power Supply, 3.3V (typ.) |
| 14 | NC | - | No Connection |
| 15 | H_GND | P | Ground |
| 16 | H_GND | P | Ground |
| 17 | HPD | O | Hot Plug Detect Output |
| 18 | BL_GND | P | LED Ground |
| 19 | BL_GND | P | LED Ground |
| 20 | BL_GND | P | LED Ground |
| 21 | BL_GND | P | LED Ground |
| 22 | BL_ENABLED | I | LED Enable Pin (+3.3V Input) |
| 23 | BL_PWM | I | System PWM Signal Input |
| 24 | NC | - | No Connection |
| 25 | NC | - | No Connection |
| 26 | BL_POWER | P | LED Power Supply 5V-21V |
| 27 | BL_POWER | P | LED Power Supply 5V-21V |
| 28 | BL_POWER | P | LED Power Supply 5V-21V |
| 29 | BL_POWER | P | LED Power Supply 5V-21V |
| 30 | NC | - | No Connection |
3.4 Timing Characteristics (DE Only Mode)
| Item | Symbols | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Clock Frequency | 1/Tc | 139.9 | 149.6 | 162.8 | MHz |
| Frame Period | Tv | 1100 | 1140 | 1180 | lines |
| Frame Rate | - | - | 60 | - | Hz |
| Frame Period (Time) | - | - | 16.67 | - | ms |
| Vertical Display Period | Tvd | - | 1080 | - | lines |
| One Line Scanning Period | Th | 2120 | 2187 | 2300 | clocks |
| Horizontal Display Period | Thd | - | 1920 | - | clocks |
3.5 Electro-Optical Characteristics (Ta=25°C±2°C, Dark Room)
| Parameter | Symbol | Condition | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| Viewing Angle (Horizontal) | Θ3 / Θ9 | CR>10 | 80 | 85 | - | Deg. |
| Viewing Angle (Vertical) | Θ12 / Θ6 | CR>10 | 80 | 85 | - | Deg. |
| Contrast Ratio | CR | Θ=0° | 800 | 1000 | - | - |
| Luminance of White (Center Point) | Lv | - | 250 | 280 | - | cd/m² |
| Luminance Uniformity | - | min/max*100% | - | 80 | - | % |
| White Chromaticity (x) | Wx | Θ=0° | 0.283 | 0.313 | 0.343 | - |
| White Chromaticity (y) | Wy | Θ=0° | 0.299 | 0.329 | 0.359 | - |
4. Power On/Off Sequence
A strict power-on and power-off sequence must be followed to prevent latch-up or DC operation of the LCD module. The timing diagram in the specification defines the relative timing of VDD, interface signals, and backlight controls. Critical timing requirements include T1 (0.5ms to 10ms), T2 (0ms to 200ms), T3 (0ms to 200ms), T4+T5+T6+T8 > 80ms, T7 (0ms to 50ms), T8 (>50ms), T10 (0ms to 500ms), T11 (0.5ms to 10ms), T12 (>500ms), T17 and T18 (>0.5ms). The backlight must be turned on only after logic and interface signals are valid, and turned off before they become invalid. Failure to adhere to this sequence may cause damage or malfunction.
5. Backlight System And Dimming Control
The backlight unit uses an edge-lit LED configuration with a built-in driver for simplified system integration. The LED configuration consists of 11*5 = 55 LEDs. The backlight power input (BL_POWER, pins 26-29) accepts a wide voltage range from 5V to 21V. The backlight is controlled externally: BL_ENABLED (pin 22) is an active high input (2.5V to 5.0V) to turn on the backlight, while BL_PWM (pin 23) accepts a PWM signal (2.5V to 5.0V high, 0V to 0.5V low) for brightness dimming. The PWM frequency range is 200 Hz to 2000 Hz, with a duty ratio from 5% to 100%.
6. Application Scenario
The LS156I05-E-V1's 15.6-inch diagonal size with Full-HD (1920x1080) resolution and 262K color (6-bit) capability makes it suitable for general-purpose display applications such as monitors, industrial panels, and embedded systems. The eDP interface provides a standard high-speed connection for video data. The module’s operating temperature range (0°C to +50°C) supports typical indoor use, while the storage temperature range (-20°C to +60°C) provides flexibility for shipping and storage. The typical luminance of 280 cd/m² and contrast ratio of 1000:1 ensure good readability for various content.
7. Handling Precautions And Compliance
The LCD panel is made 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 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 (LS156I05-E-V1 Product Specification Revision 1.0) before integration and to test the module under application-specific conditions. The manufacturer disclaims liability for damages resulting from improper use or modification.
