LS215I02-L-V1: 21.5-inch Wide Color a-Si TFT-LCD Module, Full HD 1920×1080 Resolution, 16.7M Colors (RGB 6-bit+Hi-FRC), Dual Channel LVDS Interface, VA Mode, Normally Black, High Contrast Ratio, Lesson Smart Display Technology
Product Subtitle / Keywords
21.5 Inch Display, 1920×1080 FHD Resolution, Wide Color a-Si TFT-LCD, VA Mode, Normally Black, Dual Channel LVDS Interface, 16.7M Colors (RGB 6-bit+Hi-FRC), 3000:1 Typical Contrast Ratio, 89° Typical Viewing Angle, 400 cd/m² Typical Luminance, 18ms Typical Response Time, 5.0V Typical Power Supply, 3.1W Typical Power Consumption, RoHS Compliant, Desk-top PC & Monitor, Lesson Smart Display Technology
1. Executive Summary And Product Positioning
The LS215I02-L-V1, developed by Lesson Smart Display Technology Co., Ltd. (立信(万安)智显科技有限公司), is a 21.5-inch wide color a-Si TFT-LCD module designed for high-definition display applications.
This product specification serves as the definitive technical document, defining its general description, display characteristics, electrical specifications, optical characteristics, and mechanical dimensions. It supports a Full HD resolution of 1920(H) × 1080(V) and can display up to 16.7 million colors (RGB 6-bit+Hi-FRC).
This module features a VA Mode (Vertically Aligned) display with a Normally Black configuration, offering excellent contrast ratio and wide viewing angles. The unequivocal recommendation for engineers is to strictly adhere to the absolute maximum ratings, electrical specifications, and interface timing described herein to ensure reliable performance and compatibility.
2. Detailed Product Overview And Architecture
- Core Technology: Wide Color a-Si TFT-LCD Module using amorphous silicon thin film transistor technology.
- Display Mode: VA Mode, Normally Black.
- Display Format: Full HD - 1920(H) × 1080(V) pixel array.
- Display Characteristics: Capable of displaying up to 16.7 million colors (RGB 6-bit+Hi-FRC).
- Pixel Arrangement: R.G.B. Vertical Stripe.
- Interface Type: Dual Channel LVDS (Low-Voltage Differential Signaling).
- Backlight: Based on AUO LED Backlight.
- Special Features: High contrast ratio (3000:1 Typ.), wide viewing angle (89° Typ.), high luminance (400 cd/m² Typ.), RoHS compliant.
- Approval Status: Approved Product Specification only (Version 1.0).
3. Exhaustive Technical Specifications
3.1 Display Characteristics (Ta=25°C)
| Item | Unit | Specification |
|---|---|---|
| Screen Diagonal | [mm] | 546.21 (21.50") |
| Active Area (H × V) | [mm] | 476.064 × 267.786 |
| Pixels (H × V) | - | 1920(x3) × 1080 |
| Pixel Pitch | [um] | 247.95 (per one triad) × 247.95 |
| Pixel Arrangement | - | R.G.B. Vertical Stripe |
| Display Mode | - | VA Mode, Normally Black |
| Response Time (on/off, Typ.) | [msec] | 18 |
3.2 Optical Characteristics (Ta=25°C, VDD=5.0V, Fv=60Hz)
| Parameter | Symbol | Min. | Typ. | Max. | Unit | Remark |
|---|---|---|---|---|---|---|
| Contrast Ratio | CR | 2000 | 3000 | - | - | Base on AUO LED Backlight |
| Viewing Angle (Horizontal, CR=10) | θ_R / θ_L | 75 | 89 | - | [degree] | By SR-3 |
| Viewing Angle (Vertical, CR=10) | Φ_H / Φ_L | 75 | 89 | - | [degree] | By SR-3 |
| Viewing Angle (Horizontal, CR=5) | θ_R / θ_L | 75 | 89 | - | [degree] | By SR-3 |
| Viewing Angle (Vertical, CR=5) | Φ_H / Φ_L | 75 | 89 | - | [degree] | By SR-3 |
| Rising Time | T_R | - | 13 | 28 | [msec] | By TRD-100 |
| Falling Time | T_F | - | 5 | 8 | [msec] | By TRD-100 |
| Response Time (Rising + Falling) | - | - | 18 | 36 | [msec] | By TRD-100 |
| Color Coordinates (Red x) | R_x | 0.622 | 0.652 | 0.682 | - | CIE 1931, Base on C light |
| Color Coordinates (Red y) | R_y | 0.305 | 0.335 | 0.365 | - | CIE 1931, Base on C light |
| Luminance of White (Y_L) | Y_L | 380 | 400 | 400 | cd/m² | - |
3.3 Recommended Operating Conditions (Ta=25°C)
| Parameter | Symbol | Min. | Typ. | Max. | Unit | Remark |
|---|---|---|---|---|---|---|
| Power Supply Input Voltage | VDD | 4.5 | 5.0 | 5.5 | [Volt] | - |
| Power Supply Input Current (RMS) | IDD | - | 0.62 | 0.74 | [A] | VDD=5.0V, All White Pattern, Fv=60Hz |
| Power Supply Input Current (RMS) | IDD | - | 0.7 | 0.84 | [A] | VDD=5.0V, All White Pattern, Fv=75Hz |
| VDD Power Consumption | PDD | - | 3.1 | 3.7 | [Watt] | VDD=5.0V, All White Pattern, Fv=60Hz |
| VDD Power Consumption | PDD | - | 3.5 | 4.2 | [Watt] | VDD=5.0V, All White Pattern, Fv=75Hz |
| Inrush Current | IRush | - | - | 3.0 | [A] | Note 3-1 |
| Allowable VDD Ripple Voltage | VDDrp | - | - | 500 | [mV] | VDD=5.0V, Fv=75Hz |
3.4 LVDS Interface DC Characteristics
| Parameter | Symbol | Min. | Typ. | Max. | Units | Condition |
|---|---|---|---|---|---|---|
| Differential Input High Threshold | V_TH | - | - | +100 | [mV] | V_CM = 1.2V |
| Differential Input Low Threshold | V_TL | -100 | - | - | [mV] | V_CM = 1.2V |
| Differential Input Voltage | V_ID | 100 | - | 600 | [mV] | - |
| Common Mode Voltage | V_CM | +1.0 | +1.2 | +1.5 | [V] | V_TH-V_TL = 200mV |
3.5 Connector Pin Assignment (Dual Channel LVDS)
| PIN # | Symbol | Description |
|---|---|---|
| 1 | Rx00- | Negative LVDS differential data input (Odd data) |
| 2 | Rx00+ | Positive LVDS differential data input (Odd data) |
| 3 | Rx01- | Negative LVDS differential data input (Odd data) |
| 4 | Rx01+ | Positive LVDS differential data input (Odd data) |
| 5 | Rx02- | Negative LVDS differential data input (Odd data) |
| 6 | Rx02+ | Positive LVDS differential data input (Odd data) |
| 7 | GND | Ground |
| 8 | RxOCLK- | Negative LVDS differential clock input (Odd clock) |
| 9 | RxOCLK+ | Positive LVDS differential clock input (Odd clock) |
| 10 | RxO3- | Negative LVDS differential data input (Odd data) |
| 11 | RxO3+ | Positive LVDS differential data input (Odd data) |
| 12 | RxE0- | Negative LVDS differential data input (Even data) |
4. PDP (Power-On/Off) Sequence
The document specifies strict power-on and power-off sequences that must be followed to prevent damage to the module. The timing diagram defines the relative timing of VDD, interface signals, and backlight controls. It is critical to ensure that the backlight is 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 latch-up or DC operation of the LCD module, potentially leading to permanent damage.
5. Backlight System
The LS215I02-L-V1 uses a LED backlight system. The specification indicates the backlight is "Base on AUO LED Backlight". The module does not appear to include an integrated LED driver, so an external driver is required for the backlight.
6. Application Scenario
The LS215I02-L-V1's 21.5-inch diagonal size with Full-HD (1920×1080) resolution and 16.7M color capability makes it suitable for desk-top PC and monitor applications. The 5.0V power supply, high contrast ratio (3000:1 Typ.), high luminance (400 cd/m² Typ.), and wide viewing angle (89° Typ.) ensure a high-quality visual experience for standard monitor use.
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. It is strongly recommended to read the full specification document (LS215I02-L-V1 Specification Sheet Version 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. The product is RoHS compliant.
