Negative Va LCD Module White Character LCD Display 4.5V 34pin

Product Description

Negative VA LCD Module White Character LCD Display 4.5V 34PIN

Product Description 

This negative VA white character liquid crystal module is powered by 4.5V and has a 34-pin design. Its core technology is negative vertical alignment (VA) liquid crystal, presenting a negative display effect with a black background and white characters. It is suitable for character display scenarios and features high contrast and wide viewing angle. It is a mature display solution for industrial and civilian equipment.

Product Core Introduction

Display Principle and Effect: In VA mode, the liquid crystal molecules are arranged vertically on the base plate when no electric current is applied. In negative display mode, a black background with white characters is presented. The white characters stand out sharply against the dark background, and they remain clear even under strong light. Usually, a white backlight (such as white LED) is equipped, which can further enhance the recognition ability in low light and readability.

Electrical and Interface Characteristics: The nominal operating voltage is 4.5V, compatible with common equipment power supplies of 3.0-5.5V, with strong compatibility; 34-pin pins provide complete interfaces for power, data, control, backlight, etc., supporting parallel / partial serial driving, compatible with mainstream 8-bit / 4-bit MPU interfaces, and can directly drive character display (such as 8×2, 16×2, 20×4, etc., common character specifications).

Structure and Driving: Mostly in COB/COG packaging, integrating a driving IC (such as the HD44780 compatible series), supporting standard character libraries and custom characters, enabling digital, alphabetic, symbol, and simple icon display; the working temperature is typically -20°C to 70°C, meeting the needs of most industrial and vehicle environments.

Core Advantages: High static contrast (usually ≥ 300:1), clear black and white; wide horizontal/vertical viewing angle (approximately 120°-140°), clear side view; good stability of negative VA liquid crystal, low power consumption, small attenuation over time, and superior anti-interference ability compared to some TN/STN solutions.

Typical Applications

Industrial Control: Used for PLCs, frequency converters, temperature/pressure controllers, flow meters, liquid level meters, etc., for displaying parameters, status codes, alarm information. With a wide viewing angle, it is suitable for observing from multiple angles within the cabinet, and with high contrast, it is compatible with strong or weak light environments in the workshop.

Instrumentation: Multimeters, oscilloscopes, signal generators, power supplies, etc., for displaying measured values, range, and gears. With a black background and white text, it is easy to read. 4.5V low power consumption is suitable for battery-powered scenarios.

Automotive Electronics: Vehicle meters (rpm, fuel level, water temperature), dash cams, tire pressure monitoring systems, navigation assistance displays. With wide temperature and shock-resistant design, it is suitable for vehicle conditions, and with a wide viewing angle, it meets the viewing needs of the driver's seat and the passenger seat.

Medical Equipment: Blood glucose meters, blood pressure monitors, blood oxygen monitors, infusion pumps, etc., for displaying values, operation instructions, and alarm prompts. With high contrast, it reduces reading errors, and with low power consumption, it is suitable for portable/mobile use.
Smart Home and Small Appliances: Ovens, refrigerators, washing machines, air conditioner indoor units, for displaying set temperatures, operating modes, and timing times. With simple character display that meets the UI requirements of household appliances, it is compatible with power fluctuations.

Security and Communication: Access control hosts, alarm hosts, small switches, optical network units, etc., for displaying device IDs, signal strength, and alarm status. Stable and reliable, it is suitable for 24-hour duty scenarios.

Product pictures:
Packaging & Shipping:
 
       Packaging: Carton boxess, Cupboard , EPE, Blister Tray, About the package way, it is up to the size of products,
                           according to customer request and demand. Different countries have not same requirement..




       Shipping: Expr ess way as DHL,Fedex,EMS,UPS,air shipping,sea shipping,Any shipping method you prefer.
 
 


 

Payment Method:



 
FAQ:

1. I want the LCD display 8 digits and the outline size is 65x30x2.8mm...…?
   Answer: No problem. Firstly, please kindly send us your specification/ drawing paper 
   If you have not the specification, you can also provide your samples; we will recommend the suitable one

 if it is standard products. Or we can customize for you based on your own requirement.

2.This LCD  is just what we want, but it is big size, do you have any smaller size? And the display content need to be changed a little.
      Answer: For the segment type LCD module, if you need modify the outline size or display content,
a new LCD glass module is need. We have to open new tooling for you.

3. This LCD display is HTN type, but I want STN type,can you make?
      Answer: That's all right .  we can change for you as per you request.

4. I want customize a new LCD module. Can you do?
      Answer: Yes, we can. Please send your drawing paper. If you have not, please advise me the outline size 
of the LCD display, display information( Glass thickness, Polarizer, Display Type, Connector mode,
Storage Temp. Operating Temp.  Supply Voltage, Viewing direction, drive condition), we can customize for you.

5. What is leading time for tooling?
      Answer: General speaking, it will cost 15 to 25 days  after drawing paper confirmation and tooling charge payment,
we can report you the exact time when you confirm the drawing paper.

6. Can you send us samples for checking?
     Answer: Yes,. Samples order is available.

7. What is the Leading Time?
    Answer: If we have stock for the standard ones, the leading time is one day after payment. If it is the mass production for 
special ones, the leading time is about 15-30 days. suppose we can finish earlier,  we will report the information in advanced.
 
Our Services:
1. Free repair within one year after the shipment of products from us.
2. Replacement within 30 days after the shipment of products from us due to products' problems.
3. We can print your logo and stick your model No.on the cameras.
4. We have long cooperation with many shipping companies and our export volume is large. The shipping companies 
can offer us good discounts.
5. Professional technician supports. We have a good after-sales service team. They can solve your problems in time.
6.All goods will be inspected and tested by our engineers and QC/QA before packing and shipment.
7.Customers satisfactory is most important to us.If you have any problem or questions regarding our transaction.Please contact us by Email or online. It will be responded within 24 hours.
8.Products pictures only for your reference. please kindly refer to the specification. we can provide the products basic on the specification. or you can offer your own specification or drawing , we can customize all kinds of LCD displays for you. thanks for your kind support always.