1.3 Inch LCD Display

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 games. LCD’s technologies allow displays to be much thinner when compared to a cathode ray tube (CRT) technology.
Liquid crystal display is composed of several layers which include two polarized panel filters and electrodes. LCD technology is used for displaying the image in a notebook or some other electronic devices like mini computers. Light is projected from a lens on a layer of liquid crystal. This combination of colored light with the grayscale image of the crystal (formed as electric current flows through the crystal) forms the colored image. This image is then displayed on the screen.

Model: 130003S0
Resolution: 240*240
Viewing angle: IPS
Color: 65K
Features: high brightness, full viewing angle, ultra-thin design with integrated backlight, low power consumption, square structure, etc.
Application: smart wear, children's toys, cameras/smart speakers, medical equipment, digital electronics, etc.

1. 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 240xRGBx240

As to basic specification of the driver IC, refer to the IC (Sitronix:ST7789V)

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

240 dot-segment and 240 dot-common outputs;

262K Color can be selected by software;

White LED back light;

MCU 8 bit interface

1.3 Applications:

Pos

Pda

Electronic cigarettes

Law enforcement equipment,

walkie-talkie,

household appliances

2. LCM General specification

3.Absolute Maximum Rating

4.Electrical Characteristics

4.1 TFT DC Characteristics

4.2Back-Light Unit Characeristics

The back-light system is an edge-lighting type with 2 white LEDs. The characteristics of the back-light are shown in the following tables.

Note:

(1) The “LED life time” is defined as the module brightness decrease to 50% of original brightness at I_L=20mA/LED. The LED life time could be decreased if operating I_L is larger than 25mA/LED.

Backlight circuit diagram shown in below:   

5. Module Function Description

5.1 LCM  Pin Descriptions

6. Timing Characteristics

   6.1 80-system Bus Interface Timing Characteristics of IC

Table 8: Normal Write Mode (VCC = IOVCC=2.4~3.3V)

 Figure 7. 4-line Serial interface Bus Timing

6.2  Reset Operation of IC

Table 9: Reset Timing Characteristics (VCC = IOVCC=2.4~3.3V) 

 Figure 8: Reset Timing

7.Optical Characteristics

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):

Note 3: Viewing Angle 

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.

8. Reliability Test Item

9. Packing Method----TBD

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