132×64 HTN Negative LCD Display with Operating Temperature -20 to 70°C for Water Purifiers and Dispensers

Above the switch of the water purifier and water dispenser, there will be a liquid crystal LCD display screen installed to show the amount of purified water and to view the operation of the machine more intuitively. The material used is HTN or VA type, which has a relatively high cost performance and is also elegant and generous.

LCD material

HTN liquid crystal screen

Display mode

Negative display

Polarizing film type

Fully transparent

Operating temperature

-20 to 70°C

Connection methods

metal pins, conductive rubber strips, hot-pressed zebra paper, FPC

Working voltage

2.7V - 5.0V

Features: Above the switch of the water purifier and water dispenser, there is a liquid crystal LCD display screen installed to show the amount of purified water and to view the operation status of the machine more intuitively. The material used is HTN or VA type, which has a relatively high cost performance and is elegant and generous.

1. Stable and reliable: The LCD screen has passed a 360-hour test under high temperature and high humidity conditions, demonstrating its shock resistance and UV protection capabilities, thereby reducing failure rates.
2. Low power consumption: Utilizing Shichikaku and Xianghua liquid crystal materials, the power consumption is low. The power consumption of LCD is approximately 1-10 μA.
3. Anti-interference: Anti-static LCD + ITO glass closed grounding circuit directly contacts 8KV, and can withstand 15KV air discharge.
4. Batch consistency: Each sample is sealed. The voltage tolerance of the samples is within ±0.1V of the shipment, and the size tolerance is +0.20mm.
5. Customized service: For more functional requirements, we can provide customized sample production of product designs.

The size and type of HTN LCD display are selected based on the device's panel design, the amount of information to be displayed, and cost considerations. The following table summarizes common specifications.

Selecting the right HTN LCD for a water appliance involves evaluating several factors:

• Information Requirements: Define the type and volume of data to be shown (e.g., simple numerals, status icons, text prompts, or graphical interfaces).

• Physical Space Constraints: Precisely measure the allocated space (aperture and depth) on the device panel to ensure the display module fits.

• Viewing Angle & Readability: Select a technology (HTN, STN) with a suitable viewing angle for the typical user's line of sight to ensure clarity.

• Interface & Driver Compatibility: Confirm the display's interface type (e.g., Pin connector, FPC cable) is compatible with the main PCB and that the driver IC is supported.

• Backlighting Needs: Determine if backlighting is required for the usage environment and choose a color (e.g., white, blue) that ensures readability under various lighting conditions.

• Operating Temperature & Lifespan: Ensure the display's operating temperature range (e.g., -20°C ~ +70°C for HTN) and longevity are suitable for the appliance's intended environment (e.g., kitchens).

• Cost-Effectiveness: Choose the most cost-effective solution that meets all functional, reliability, and aesthetic requirements.

1. High Readability and Visual Comfort

   • The negative display features dark backgrounds (black/dark gray) with light characters (white/light gray). This high-contrast scheme is eye-catching in well-lit environments, reduces glare, minimizes eye strain, and offers a comfortable viewing experience akin to an e-ink display.

2. Premium Aesthetics and Modern Look

   • When the device is idle or off, the negative screen blends seamlessly into the appliance's panel (appearing as a uniform black surface). This creates a clean, minimalist, and high-end appearance that significantly boosts the product's overall perceived quality and technological sophistication.

3. Comprehensive Information and Intuitive Interaction

   • Capable of displaying multiple critical data points simultaneously, such as:

     • Water temperature (Room Temp./Warm/Hot)

     • Water volume (Large Cup/Small Cup)

     • TDS value (Water quality indicator)

     • Filter life reminder (Percentage or progress bar)

     • Operational status (Purifying/Refilling/Water Shortage)

     • Child lock indicator

   • It enables your users to have a clear and concise overview of the machine status and water quality, facilitating informed interaction.

4. Energy Efficiency and Reliability

   • HTN technology itself is inherently low-power, aligning with the energy-saving requirements of household appliances.

   • The LCD module has an exceptionally long lifespan and offers stable, reliable performance as it does not emit its own light (relies on a backlight).

5. Superior Sunlight Legibility

   • Compared to positive displays (light background/dark characters), negative displays maintain much better readability under direct sunlight or strong ambient light, preventing the "washed-out" effect that makes positive displays hard to see.

For water purifiers and dispensers, the HTN negative LCD represents an optimal balance of performance, cost, and aesthetics.

• It provides superior clarity compared to basic TN displays, supporting more complex content.

• It is more cost-effective than STN or full TFT color screens, helping manage overall product costs.

• The negative mode delivers a premium look and excellent readability, greatly enhancing the user experience and market competitiveness of the product.

Therefore, when you see a water purifier with a sharp, clear display on a black background, it is likely an HTN negative LCD—making it the preferred display solution for mainstream and premium models in the current market