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DESCRIPTION
3.97″ TFT lcd screen display
HC-397BS2503 is a 3.97 inch tft LCD display module with optional resistive touch screen and capacitive touch screen control with a resolution of 480×800 pixels. This size TFT LCD monitor is portrait mode, TFT panel adopts IPS panel, Left: 80/Right: 80/ Top: 80/ Bottom: 80 degrees (typical). Optional RTP or CTP.
This HC-397BS2503 module has built-in ST7701S controller IC, supports MIPI interface, the power supply voltage (VCC) range is 3.0V to 3.6V, the brightness is 480 nits (typ), and the contrast ratio is 800:1. This module is a beauty Industrial ideal for equipment, medical instruments, etc. The module can operate from -10°C to +70°C; its storage temperature range is -20°C to +80°C
DRAWING
SPECIFICATIONS
General Specifications
| Item | Contents | Unit |
| Size | 3.97 | inch |
| LCM Dimension | 57.14（W）* 96.85（H） * 1.85(T) | mm |
| LCD Active Area | 51.84 * 86.40 | mm |
| Number Of Dots | 480×800 | pixel |
| LCD Type | a-Si TFT | |
| Viewing Direction | IPS | |
| Driver IC | ST7701S | |
| Interface Type | MIPI | |
| Operating Temperature | -10℃~ 70℃ | |
| Storage Temperature | -20℃~ 80℃ | |
| Backlight Type | 8 LEDs | |
| Brightness | 480 | cd/m2 |
Interface
LCM PIN Definition
| NO. | Symbol | Description |
| 1 | LED-A | BACKLIGHT ANODE |
| 2 | NC | Not Connect |
| 3 | LED-K | BACKLIGHT CATHODE |
| 4 | GND | Ground |
| 5 | LCM-ID | Not Connect |
| 6 | TE | Serves TE (Tearing Effect ) pin on MPU interface |
| 7 | VCC(2.8V) | POWER SUPPLY（2.8V） |
| 8 | IOVCC(1.8V) | I/O POWER SUPPLY（1.8V） |
| 9 | RESET | Reset Pin |
| 10 | GND | Ground |
| 11 | NC | Not Connect |
| 12 | NC | Not Connect |
| 13 | GND | Ground |
| 14 | TDP1 | MIPI-DSI Data differential signal input pins. (Data lane 1) |
| 15 | TDN1 | MIPI-DSI Data differential signal input pins. (Data lane 1) |
| 16 | GND | Ground |
| 17 | TCP | MIPI-DSI CLOCK differential signal input pin |
| 18 | TCN | MIPI-DSI CLOCK differential signal input pin |
| 19 | GND | Ground |
| 20 | TDN0 | MIPI-DSI Data differential signal input pins. (Data lane 0) |
| 21 | TDP0 | MIPI-DSI Data differential signal input pins. (Data lane 0) |
| 22 | GND | Ground |
| 23 | NC | Not Connect |
| 24 | NC | Not Connect |
| 25 | GND | Ground |
DC Characteristics
| Item | Symbol | Min | Typ | Max | Unit |
| TFT gate on voltage | VGH | 12 | — | 18 | V |
| TFT gate off voltage | VGL | -15 | — | -11 | V |
| TFT common electrode Voltage | Vcom | -2 | – | 0 | V |
Typical Operation Conditions
| Item | Symbol | Min. | Typ. | Max. | Unit |
| Analog Supply Voltage | VCI | 2.65 | 2.8 | 3.3 | V |
| Digital Supply Voltage | VDD | 2.65 | 2.8 | 3.3 | V |
| I/O Supply Voltage | IOVCC | 1.65 | 1.8/2.8 | 3.3 | V |
| Input High Voltage | VIH | 0.8*IOVCC | – | IOVCC | V |
| Input Low Voltage | VIL | 0 | – | 0.2*IOVCC | V |
| Output High Voltage | VOH | 0.8*IOVCC | – | – | V |
| Output Low Voltage | VOL | – | – | 0.2*IOVCC | V |
Backlight Circuit Characteristics
| Item | Symbol | Min. | Typ. | Max. | Unit |
| LED Current | IB | — | 40 | — | mA |
| LED Voltage | Vf | 11.2 | — | 12.8 | V |
| CIE | X | 0.265 | 0.285 | 0.305 | |
| Y | 0.26 | 0.28 | 0.30 | ||
| Brightness of LCM | L | — | 480 | — | cd/m2 |
Reliability Test Items
| Test Item | Test Condition | Test result determinant gist |
| High temperature storage | 80±3 ℃，48H； | |
| Low temperature storage | -30±3 ℃，48H； | |
| High temperature storage | 70±3 ℃，48H； | Inspection after 2~4hours storage at roomtemperature, |
| Low temperature operation | -20±3 ℃，48H； | the sample shall be free from defects: |
| High temperature/humidity | 60℃±3 ℃,90%±3%RH ，48H； | 1.Air bubble in the LCD; |
| Thermal Shock | -20℃/0.5h~+70℃/0.5h | 2.Non-display; |
| for a total 24 cycles； | ||
|
Vibration Test |
Frequency 10Hz~55Hz~10Hz | 3.Glass crack; |
| Amplitude：1.5mm, X，Y，Z | ||
| direction for total 1H； | 4. The electrical | |
| (Packing condition) | ||
|
ESD test |
±4KV, Human Body Mode, | characteristics requirements shall be satisfied. |
| 150pF/330Ω； | ||
| ±8KV, Air Mode, 150pF/330Ω； |
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