
1.77 inch tft lcd display
►Resolution : 128×160 dots
►View Direction: 12 o’clock
►Interface: MCU
►Driver IC: ST7735S
►RTP/CTP : Optional
►Brightness(cd/m²): 380
►Outline Dimension: 34.70 * 46.70 *2.30(mm)
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DESCRIPTION
K177B2014 is a 1.8 inch tft LCD display module with optional resistive touch screen and capacitive touch screen control with a resolution of 128×160 pixels. This small size TFT LCD monitor is portrait mode with wider viewing angle by POL adjustment, Left: 40 / Right: 40 / Top: 40 / Bottom: 40 degrees (typical).Optional RTP or CTP.
This K177B2014 inch module has built-in ST7735S controller IC, supports MCU interface, the power supply voltage (VCC) range is 3.0V to 3.6V, the brightness is 380 nits (typ), and the contrast ratio is 800:1. This module is a coffee machine , medical equipment and other POS systems ideal. The module can operate at temperatures from -20°C to +70°C; its storage temperature range is -30°C to +80°C.
General Specifications
SPECIFICATIONS
Item | Contents | Unit |
Size | 1.77 | inch |
LCM Dimension | 34.70(W)* 46.70(H) *2.30(T) | mm |
LCD Active Area | 28.03* 35.04 | mm |
Number Of Dots | 128×160 | pixel |
LCD Type | a-Si TFT | |
Viewing Direction | 12 o’clock | |
Driver IC | ST7735S | |
Interface Type | MCU | |
Operating Temperature | -20℃~ 70℃ | |
Storage Temperature | -30℃~ 80℃ | |
Backlight Type | 2 LEDs | |
Brightness | 380 | cd/m2 |
DRAWING

Interface
LCM PIN Definition
NO. | Symbol | Description |
1 | LEDK | BACKLIGHT CATHODE |
2 | LEDA | BACKLIGHT ANODE |
3 | GND | Ground |
4 | VCC | POWER SUPPLY |
5 | IOVCC | I/O POWER SUPPLY |
6 | TE | Frame mark. |
7 | CS | Chip enable, Low-active. |
8 | RESET | Reset pin |
9 | RS | Data/Command register address. |
10 | WR | Write signal, rising-edge-trigger. |
11 | RD | Read signal, rising-edge-active. |
12 | DB7 | Data Bus |
13 | DB6 | Data Bus |
14 | DB5 | Data Bus |
15 | DB4 | Data Bus |
16 | DB3 | Data Bus |
17 | DB2 | Data Bus |
18 | DB1 | Data Bus |
19 | DB0 | Data Bus |
20 | 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 | — | 380 | — | 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 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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