Shenzhen Yetai Optoelectronics Technology Co.,Ltd.
Model No.: TXW154018B0-LCM
Payment Type: T/T
A Liquid Crystal Display or LCD draws its definition from its name itself. It is a combination of two states of matter, the solid and the liquid. LCD uses a liquid crystal to produce a visible image. Liquid crystal displays are super-thin technology display screens that are generally used in laptop computer screens, TVs, cell phones, and portable video
Model: 154018B0
Resolution: 320*320
Viewing angle: IPS
Color: 262K
Features: high brightness, full viewing angle, ultra-thin design with integrated backlight, low power
consumption, square structure, etc.
Application areas: smart wearable, medical equipment, digital electronics, smart home, white goods,
etc.
Introduction
1.1 Scope of application
This specification applies to the LCD module that is supplied by
Tian Xian Wei Technology CO., LTD.
LCD specification: Dots 320xRGBx320
As to basic specification of the driver IC, refer to the IC (Sitronix:ST7796S)
specification and data book.
All material & processing of the LCD module should be Lead Free.
1.2 TFT features:
Structure: TFT PANNEL+IC +FPC+BL;
IPS Type LCD
320 dot-segment and 320 dot-common outputs;
262K Color can be selected by software;
White LED back light;
MIPI interface
1.3 Applications:
2. LCM General specification
| ITEM | Sandard value | Unit |
| LCD Type | Normally black | -- |
| Drive element | TFT active matrix | -- |
| Number of pixels | 320*3RGB(H)X320(V) | Dots |
| Pixel arrangement | RGB stripe | -- |
| Pixel Pitch (W*H) | 0.0867(H) x0.0867 (V) | mm |
| Active area | 27.744(H) × 27.744(V) | mm |
| Module Size(W*H*T) | 31.52 x 33.72 x 1.6 | - |
| Viewing direction | ALL O’CLOCK |
|
| TFT Driver IC | ST7796S | - |
| TFT interface | MIPI Interface | - |
| Approx. Weight | TBD | g |
| Touch structure |
|
|
| Touch Driver IC |
| - |
| Touch Interface |
|
|
3.Absolute Maximum Rating
| Characteristics | Symbol | Min. | Max. | Unit |
| LCM Operating Temperature | TOPR | -20 | +70 | °C |
| LCM Storage Temperature | TSTG | -30 | +80 | °C |
| TP Operating Temperature & Humidity(20% ~ 90%RH) | TOPR |
|
| °C |
| TP SStorage Temperature & Humidity(20% ~ 90%RH) | TSTG |
|
| °C |
| Humidity | RH | - | 90 | % |
4.Electrical Characteristics
4.1 TFT DC Characteristics
| Characteristics | Symbol | Min. | Typ. | Max. | Unit |
| Supply Voltage for I/O | VDDIO | 1.65 | 1.8 | 3.3 | V |
| Supply Voltage for(DC/DC) | VDD | 2.5 | 2.8 | 3.6 | V |
| Supply Voltage for(DC/DC) |
|
|
|
| V |
| Supply Voltage for(DC/DC) |
|
|
|
| V |
| Current Consumption | IDD | - | TBD | - | mA |
| IDD-SLEEP |
| TBD |
| uA |
4.2 Back-Light Unit Characeristics
The back-light system is an edge-lighting type with 3 white LEDs. The characteristics of the back-light are shown in the following tables.
| Characteristics | Symbol | Min. | Type | Max. | Unit | Notes |
| Forward Voltage | VF | 2.9 | 3.2 | 3.5 | V | - |
| Forward current | IF | -- | 60 | - | mA | - |
| Luminance(With LCD) | Lv |
| 700 | -- | cd/m2 | - |
| LED life time | N/A | ---- | 50,000 | -- | Hr | Note 1 |
Note:
(1) The “LED life time” is defined as the module brightness decrease to 50% of original brightness at IL=20mA/LED. The LED life time could be decreased if operating IL is larger than 25mA/LED.
Backlight circuit diagram shown in below:
5. Module Function Description
| Pin No. | Symbol | Functional | Notes |
| 1 | TCP | Positive polarity of low voltage differential clock signal |
|
| 2 | TCN | Negative polarity of low voltage differential clock signal |
|
| 3 | GND | System ground |
|
| 4 | TDP0 | Positive polarity of low voltage differential data signal |
|
| 5 | TDN0 | Negative polarity of low voltage differential data signal |
|
| 6 | GND | System ground |
|
| 7 | RESET DDDDB15AAA0DDBDB15~DB0 DB15~DB0 | Reset signal input terminal. Active at ‘L’.
RS=’H’: current data on data bus is display data.
|
|
| 8 | TE | Tearing effect output |
|
| 9 | NC | NC |
|
| 10 | IOVCC | I/O Voltage 1.65V ~ 3.3V |
|
| 11 | VCI | Power supply 2.5V ~ 3.3V |
|
| 12 | NC | NC |
|
| 13 | NC | NC |
|
| 14 | NC | NC |
|
| 15 | LED-
| Power supply for backlight cathode input terminal. |
|
| 16 | LED+ AA0DDBDB15~DB0 DB15~DB0 | Power supply for backlight anode input terminal. |
|
|
|
|
|
|
6. Timing Characteristics
7.Optical Characteristics
| Items | Symbol | Condition | Specifications | Unit | All left side data are based on TIAN XIAN WEI product reference only | |||
| Min. | Typ. | Max. | ||||||
| Contrast Ratio | CR |
| - | 900 | - | - | ||
| Response Time | TBRB +TBFB | - | 35 | 50 | ms | |||
|
| - |
|
|
| ||||
| Chromaticity | Red | XBRB |
| / |
| - | ||
| YBRB |
| / |
| - | ||||
| Green | XBGB |
| / |
| - | |||
| YBGB |
| / |
| - | ||||
| Blue | XBBB |
| / |
| - | |||
| YBBB |
| / |
| - | ||||
| White | XBWB | 0.28 | 0.31 | 0.34 | - | |||
| YBWB | 0.29 | 0.32 | 0.35 | - | ||||
| Viewing angle | Hor. | f1(3 o’clock) | Center CR≥10 | 75 | 80 | - | deg. | |
| f2(9 o’clock) | 75 | 80 | - | |||||
| Ver. | q2(12 o’clock) | 75 | 80 | - | ||||
| q1(6 o’clock) | 75 | 80 | - | |||||
| Uniformity |
|
|
|
| -- |
| % | |
Note 1: Definition of Contrast Ratio (CR):
The contrast ratio can be calculated by the following expression.
Contrast Ratio (CR) = L63 / L0
L63: Luminance of gray level 63
L0: Luminance of gray level 0
CR = CR (10)
CR (X) is corresponding to the Contrast Ratio of the point X at Figure in Note 5.
Note 2: Definition of Response Time (TR, TF):
Figure 3
Note 3: Viewing Angle
Figure 4
The above “Viewing Angle” is the measuring position with Largest Contrast Ratio; not for good
image quality. View Direction for good image quality is 6 O’clock. Module maker can increase
the “Viewing Angle” by applying Wide View Film.
Note 4: Measurement Set-Up:
The LCD module should be stabilized at a given temperature for 20 minutes to avoid abrupt
temperature change during measuring. In order to stabilize the luminance, the measurement
should be executed after lighting Backlight for 20 minutes in a windless room.
Figure 5
8. Reliability Test Item
| No. | Test Item | Test Condition | Notes |
| 1 | High Temp. Storage | +80°C / 240H | 1. Functional test isOK. Missing Segment,short, unclear segment non-display,display abnormally and liquid crystal leakare un-allowed. 2. No low temperature bubbles,end seal loose andfall, frame rainbow.
|
| 2 | Low Temp. Storage | -30°C / 240H | |
| 3 | High Tempe. Operating | +70°C / 240H | |
| 4 | Low Tempe. Operating | -20°C / 240H | |
| 5 | High Temperature /Humidity storage | 50+5°C x 90%RH / 48H | |
| 6 | Thermal and cold shock | Static state， -30℃（1 hour） ~80℃ （1 hour） ~ -30℃（1 hour），packaging， 10 cycles |
9. Packing Method----TBD
- END -
Product Categories : TFT LCD > 1.54 Inch TFT LCD
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