LSC035I19-R-V1 3.5" TFT-LCD Module 320×480 16.7M Colors with CTP
LSC035I19-R-V1 3.5 inch TFT-LCD Module 320×480 16.7M Colors with CTP
1. Executive Summary & Product Positioning
The LSC035I19-R-V1 is a 3.5-inch transmissive a-Si TFT-LCD (amorphous silicon thin film transistor liquid crystal display) module from 立信（万安）智显科技有限公司 (Lesson Smart Display Technology Co., Ltd). It offers a 3.5-inch panel size, a resolution of 320(RGB)×480, and the ability to reproduce up to 16.7M colors. Built as a COG (Chip-on-Glass) + FPC + B/L (Backlight) + CTP (Capacitive Touch Panel) assembly, the module combines display and touch functions within one compact unit.
Product Positioning: With its integrated capacitive touch, this 3.5-inch module suits a broad spectrum of interactive applications that call for a compact, high-resolution display with a wide viewing angle. Typical uses include portable instruments, smart home controllers, human-machine interface (HMI) panels, handheld devices, and other embedded display systems.
2. Detailed Product Overview & Architecture
The module's architecture is engineered for dependable performance and straightforward integration. Its main components are as follows:
- TFT-LCD Panel: 3.5-inch diagonal, a-Si TFT active matrix, transmissive, IPS (In-Plane Switching) with free viewing direction. Resolution is 320(RGB) × 480 pixels.
- Driver Circuit: The module integrates the ST7365P driver IC, communicating via an RGB interface.
- Touch Panel (CTP): Integrated capacitive touch panel controlled via an I2C interface (TP_RESET, TP_INT, TP_SCL, TP_SDA).
- Backlight Unit (B/L): A white LED backlight using a dual-chip LED configuration. The typical driving condition is IF=160mA, Vf=6V(TYP).
- Mechanical Construction: COG (Chip-on-Glass) + FPC + B/L + CTP. The LCM outer dimension is 56.0 × 87.9 × 3.7 mm.
- Interface: The module communicates via a 40-pin FPC connector. The display interface is RGB, with a 3-SPI for touch/control configuration.
- Display Mode: Transmissive, Active Matrix TFT.
- Viewing Direction: Free viewing angle (IPS).
- RoHS: All materials are compliant with RoHS standards.
3. Exhaustive Technical Specifications
3.1 General & Mechanical Specifications
| Item | Specification |
| Display Size (Diagonal) | 3.5 inches |
| Resolution (Dots) | 320(RGB) × 480 |
| Display Technology | Active Matrix TFT, Transmissive, a-Si, IPS |
| Module Construction | COG+FPC+B/L+CTP |
| Color Depth | 16.7M Colors |
| Input Data Interface | RGB |
| Driver IC | ST7365P |
| Module Size (H×V×D) | 56.0 × 87.9 × 3.7 mm |
| Active Area (H×V) | 48.96 × 73.44 mm |
| Display Mode | Active Matrix TFT, Transmissive |
| Viewing Direction | Free (IPS) |
| Backlight Type | Dual-Chip White LED |
| Operating Temperature | -20°C to +70°C |
| Storage Temperature | -30°C to +80°C |
| Environmental Compliance | RoHS |
3.2 Absolute Maximum Ratings
Exceeding the limits below may result in irreversible damage to the device.
| Item | Symbol | Min | Max | Unit | Remark |
|---|---|---|---|---|---|
| Supply voltage | VCC | -0.3 | 4.6 | V | Note1 Note2 |
| Supply voltage | IOVCC | -0.3 | 4.0 | V | Note1 Note2 |
| Operating temperature | TOPR | -20 | 70 | °C | Note1 Note2 |
| Storage temperature | TSTR | -30 | 80 | °C | Note1 Note2 |
3.3 Electrical Characteristics
VDDI=1.8V, VDDA=2.8V, AGND=DGND=0V, Ta=25°C
| Item | Symbol | Min | Typ | Max | Unit | Remark |
|---|---|---|---|---|---|---|
| Supply voltage | VCC | 2.4 | 2.8 | 3.3 | V | Note1 |
| Supply voltage (I/O) | IOVCC | 1.65 | 1.8 | 3.3 | V | Note1 |
| Input Voltage L level | VIL | 0 | — | 0.3×IOVCC | V | Note1 |
| Input Voltage H level | VIH | 0.7×VCC | — | IOVCC | V | Note1 |
3.4 Backlight Circuit
| Parameter | Symbol | Typ | Unit |
|---|---|---|---|
| Backlight forward current | IF | 160 | mA |
| Backlight forward voltage | VF | 6.0 | V |
| LED Configuration | — | Dual-Chip LED (双芯灯) | — |
3.5 Electro-Optical Characteristics
Measurement setup: TOPCON, L = 50 cm, field = 1°
| Item | Symbol | Condition | Min. | Typ. | Max. | Unit | Remark |
|---|---|---|---|---|---|---|---|
| Response time (Rise+Fall) | Tr+Tf | θx=θy=0° | — | 25 | 35 | ms | Note 1 |
| Contrast Ratio | CR | θx=θy=0° | 800 | 1000 | — | — | Note 2 |
| Transmittance | T% | θx=θy=0° | 3.45 | 4.05 | — | % | Note 3 |
| Color Chromaticity (White) CIE1931 | Wx | θx=θy=0° | — | 0.304 | — | — | Note 4 |
| Color Chromaticity (White) CIE1931 | Wy | θx=θy=0° | — | 0.332 | — | — | Note 4 |
| Viewing Angle (Top) | θT | CR > 10 | 80 | 85 | — | Deg. | Note 1 |
| Viewing Angle (Bottom) | θB | CR > 10 | 80 | 85 | — | Deg. | Note 1 |
| Viewing Angle (Left) | θL | CR > 10 | 80 | 85 | — | Deg. | Note 1 |
| Viewing Angle (Right) | θR | CR > 10 | 80 | 85 | — | Deg. | Note 1 |
Note 1: The viewing angle refers to the angle at which the contrast ratio exceeds 10. It is specified for the horizontal (3,9 o'clock) and vertical (6,12 o'clock) directions relative to the optical axis normal to the LCD surface.
Note 2: Contrast is measured at a viewing angle of Θ=0° and at the center of the LCD surface. CR = Luminance(white) / Luminance(black).
Note 3: Transmittance is specified as the value without APF and without CG (Cover Glass).
Note 4: Color chromaticity coordinates are calculated from spectral data with all pixels set to red, green, blue and white. Measurements are taken at the center of the panel.
4. Interface & Pin Description
4.1 Pin Description (40-pin FPC Connector)
| Pin No. | Symbol | I/O | Description |
|---|---|---|---|
| 1 | GND | P | Ground |
| 2 | TP_RESET | I | Touch circuit reset pin |
| 3 | TP_INT | I | Touch screen interrupt line |
| 4 | TP_SCL | I | Touch serial interface clock input for I2C interface |
| 5 | TP_SDA | I | Touch serial interface address and data input/output for I2C interface |
| 6 | IOVCC | P | Power supply |
| 7 | VCC | P | Power supply |
| 8 | CS | I | Chip selection pin |
| 9 | SCL | I | In SPI mode, this pin is used as SCL |
| 10 | SDA | I | SPI interface input/output pin |
| 11 | RESET | I | This signal will reset the device and it must be applied to properly initialize the chip |
| 12 | DE | I | Data enable signal for RGB interface operation |
| 13 | DCLK | I | Dot clock signal for RGB interface operation |
| 14 | HS | I | Horizontal synchronizing input signal for RGB interface operation |
| 15 | VS | I | Vertical synchronizing input signal for RGB interface operation |
| 16 | B0 | I | Data bus |
| 17 | B1 | I | Data bus |
| 18 | B2 | I | Data bus |
| 19 | B3 | I | Data bus |
| 20 | B4 | I | Data bus |
| 21 | B5 | I | Data bus |
| 22 | G0 | I | Data bus |
| 23 | G1 | I | Data bus |
| 24 | G2 | I | Data bus |
| 25 | G3 | I | Data bus |
| 26 | G4 | I | Data bus |
| 27 | G5 | I | Data bus |
| 28 | R0 | I | Data bus |
| 29 | R1 | I | Data bus |
| 30 | R2 | I | Data bus |
| 31 | R3 | I | Data bus |
| 32 | R4 | I | Data bus |
| 33 | R5 | I | Data bus |
| 34 | NC | — | No connection |
| 35 | LEDK | P | Power for LED backlight cathode |
| 36 | NC | — | No connection |
| 37 | LEDA | P | Power for LED backlight anode |
| 38 | NC | — | No connection |
| 39 | GND | P | Ground |
| 40 | GND | P | Ground |
5. Mechanical Drawing Reference
The outline dimensions of the module are 56.0 mm (H) × 87.9 mm (V) × 3.7 mm (D), while the active area measures 48.96 mm (H) × 73.44 mm (V) and contains 320(RGB) × 480 dots. Construction follows a COG (Chip-on-Glass) + FPC + B/L + CTP configuration, and a 40-pin FPC connector carries both the RGB interface and the I2C touch interface. The backlight and the cover glass (盖板) are aligned flush with each other, and the backlight does not extend beyond the cover glass boundary.
6. Quality & Reliability
The LSC035I19-R-V1 module is built to rigorous quality standards. The product specification sets out detailed acceptance criteria covering glass defects, LCD appearance defects (viewing area), polarizer defects, and electrical anomalies.
Reliability: The module is engineered for dependable operation across a temperature range of -20°C to +70°C, and it can be stored at temperatures from -30°C to +80°C.
7. Ordering Information & Compliance
Model Number: LSC035I19-R-V1
Revision: 1.0 (New released on 2026-09-02)
RoHS Compliance: This product fully complies with RoHS environmental standards, with all materials and manufacturing processes adhering to the restriction of hazardous substances.
Manufacturer: 立信（万安）智显科技有限公司 (Lesson Smart Display Technology Co., Ltd)