DESCRIPTION
HC-144HB1204 is a 1.44 inch tft lcd display screen with an optional resistive touch screen and capacitive touch screen control with a resolution of 128×128 pixels. This small size TFT LCD monitor is in portrait mode with a wider viewing angle by POL adjustment, Left: 70 / Right: 70 / Top: 70 / Bottom: 60 degrees (typical). Optional RTP or CTP.
This HC-144HB1204 inch module has a built-in ST7735S controller IC, supports SPI interface, the power supply voltage (VCC) range is 3.0V to 3.6V, and the brightness is 400 nits (type), and the contrast ratio is 800: 1. The module is Industrial ideal for coffee machines, POS machines, etc. The module can operate at temperatures from -20°C to +70°C; its storage temperature range is -30°C to +80°C.
DRAWING
SPECIFICATIONS
General Specifications
Item | Contents | Unit |
Size | 1.44 inch | inch |
LCM Dimension | 29.50(W)* 36.50(H) *2.50(T) | mm |
LCD Active Area | 25.50* 26.50 | mm |
Number Of Dots | 128×128 | pixel |
LCD Type | a-Si TFT | |
Viewing Direction | 12 o’clock | |
Driver IC | ST7735S | |
Interface Type | SPI | |
Operating Temperature | -20℃~ 70℃ | |
Storage Temperature | -30℃~ 80℃ | |
Backlight Type | 2 LEDs | |
Brightness | 400 | cd/m2 |
Interface
LCM PIN Definition
NO. | Symbol | Description |
1 | GND | Ground |
2 | AO | Destination register selection |
3 | CLK | Serial Clock |
4 | SDA | Serial Data Input |
5 | GND | Ground |
6 | CS | Chip Select |
7 | RESET | Reset pin |
8 | LEDK | BACKLIGHT CATHODE |
9 | LEDA | BACKLIGHT ANODE |
10 | VCC | POWER SUPPLY |
11 | IOVCC | I/O POWER SUPPLY |
12 | GND | Ground |
DC Characteristics
Item | Symbol | Min | Typ | Max | Unit |
TFT gate on voltage | VGH | — | 15 | — | V |
TFT gate off voltage | VGL | — | -10 | — | V |
TFT common electrode Voltage | Vcom | — | -1 | — | V |
Typical Operation Conditions
Item | Symbol | Min. | Typ. | Max. | Unit |
Analog Supply Voltage | VCI | 2.5 | 2.8 | 3.3 | V |
Digital Supply Voltage | VDD | 2.5 | 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 | — | 30 | 40 | mA |
LED Voltage | Vf | 2.8 | 3.0 | 3.2 | V |
CIE | X | 0.265 | 0.295 | 0.325 | |
Y | 0.26 | 0.29 | 0.32 | ||
Brightness of LCM | L | 350 | 400 | — | cd/m2 |
Reliability Test Items
Test Item | Test Parameters | Key factors for determining test results |
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 for a total 24 cycles; | 2.Non-display; |
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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