How to order a custom 3.4 inch transmissive TFT display?

To order a custom 3.4 inch transmissive TFT display, you typically start by contacting a display manufacturer or distributor with your specific requirements, as standard off-the-shelf models like the 3.4 inch 480x480 transmissive tft display are often available for immediate purchase, but custom orders require a minimum order quantity (MOQ) and a detailed specification sheet. Most suppliers, such as DisplayModule, Winstar, or Newhaven Display, offer customization services for parameters like interface type, touch panel integration, brightness levels, and mechanical dimensions. For a 3.4-inch panel, the standard resolution is usually 480x480 pixels, but you can request modifications to the controller IC, such as switching from SPI to RGB interface, which affects data transfer rates and pin count. The transmissive technology means the display relies on a backlight for visibility, typically with a brightness range of 300 to 1000 nits, and you can specify a custom brightness level within this range, though higher brightness often increases power consumption and cost. The LCD glass itself is usually based on a-Si TFT (amorphous silicon thin-film transistor) technology, with a typical contrast ratio of 500:1 to 800:1, and a viewing angle of 80 degrees in all directions, though you can request IPS (in-plane switching) for wider angles up to 85 degrees. The backlight unit is usually LED-based, with a typical lifespan of 20,000 to 50,000 hours, and you can choose the number of LEDs (e.g., 6 or 9) to adjust brightness uniformity. The display module’s thickness is around 2.5 to 3.5 mm without touch, and adding a capacitive touch panel adds about 0.5 to 1.5 mm, depending on the glass thickness. The operating temperature range is typically -20°C to +70°C, but you can request an extended range for industrial applications, such as -30°C to +80°C, which may require a different LCD fluid or heater. The interface options include SPI (Serial Peripheral Interface) for low pin count, typically 4-wire or 5-wire, with data rates up to 10 MHz, or RGB (Red Green Blue) parallel interface for higher frame rates, using 18-bit or 24-bit color depth, with clock speeds up to 30 MHz. The RGB interface requires more pins, around 40 to 50, compared to SPI’s 6 to 10 pins, which affects PCB layout and connector selection. The controller IC is often the ILI9488 or ST7789 for 480x480 resolution, but you can request a custom IC like the RM67162 for specific gamma curves or power management. The display’s pixel pitch is around 0.1 mm, calculated from the active area of 3.4 inches diagonal, which is approximately 70.0 mm x 70.0 mm for a square panel, giving a pixel density of about 173 PPI (pixels per inch). The active area dimensions are typically 69.12 mm x 69.12 mm for a 480x480 resolution, with a bezel of 1.5 to 2.5 mm on each side, so the overall module size is around 74.0 mm x 74.0 mm. You can request a custom bezel width, but it may increase tooling costs for the LCM (Liquid Crystal Module) assembly. The FPC (Flexible Printed Circuit) connector is usually a 0.5 mm pitch, 30-pin or 40-pin ZIF (Zero Insertion Force) connector, but you can specify a custom pinout or cable length, typically 20 to 50 mm, with a stiffener for mechanical stability. The display’s power consumption is around 200 to 400 mW for the backlight at typical brightness, and 50 to 100 mW for the LCD driver, depending on the interface and frame rate. The backlight voltage is usually 3.0 to 3.3 V, with a current of 20 to 30 mA per LED, so a 6-LED backlight draws about 120 to 180 mA. You can request a custom backlight driver IC, such as the TPS61165, for PWM dimming control, which allows brightness adjustment from 0 to 100% with a frequency of 100 Hz to 1 kHz. The display’s response time is typically 10 to 20 ms for rising and falling edges, which is suitable for static images or slow video, but for fast-moving content, you might need to request a faster response time of 5 to 10 ms, which is possible with overdrive technology. The color gamut is usually 50% to 70% of the NTSC (National Television System Committee) standard, but you can request a wider gamut up to 90% with a different color filter or LED backlight, though this increases cost. The display’s viewing angle is measured in degrees from the center, with typical values of 80° for left, right, up, and down, but IPS panels offer 85° in all directions with minimal color shift. The contrast ratio is measured in a dark room, and for transmissive displays, it is around 500:1 to 800:1, but you can request a higher ratio of 1000:1 with a special polarizer. The display’s surface treatment is usually anti-glare with a hardness of 3H to 6H, but you can request anti-reflective coating for outdoor use, which reduces glare by 50% to 70%. The touch panel options include resistive, capacitive, or optical, with capacitive being the most common for custom orders, using a projected capacitive (PCAP) technology with a glass lens of 0.5 to 1.1 mm thickness. The touch controller IC is often the FT6336 or GT911, which supports multi-touch up to 5 points, with a response time of 10 to 20 ms. You can request a custom cover glass with a specific shape, such as a round or rectangular cutout, or with a printed border for aesthetics. The display’s mounting method is usually through holes or adhesive tape, with a typical screw hole size of M2 or M2.5, and you can specify the hole positions on the PCB or the metal frame. The display’s compliance with standards like RoHS (Restriction of Hazardous Substances) and REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) is standard, but you can request additional certifications like UL (Underwriters Laboratories) or CE (Conformité Européenne) for specific markets. The ordering process involves submitting a request for quotation (RFQ) with your technical specifications, including the display size, resolution, interface, brightness, touch panel, operating temperature, and any mechanical drawings. The supplier will then provide a custom specification sheet, a sample lead time of 4 to 8 weeks, and a production lead time of 8 to 12 weeks after sample approval. The MOQ for custom displays is typically 500 to 1000 pieces, but some suppliers offer lower MOQs for simple modifications like changing the backlight color or FPC length. The cost per unit for a custom 3.4-inch transmissive TFT display ranges from $10 to $25 for the standard model, but custom features like IPS, higher brightness, or capacitive touch can increase the price to $20 to $40 per unit, depending on the complexity and volume. The tooling cost for a new mold or custom FPC is around $500 to $2000, which is amortized over the production run. You can also request a custom display with a specific aspect ratio, such as 1:1 for the 480x480 resolution, or a rectangular shape like 480x320, but the 3.4-inch diagonal is fixed for the standard glass size. The display’s pixel format is usually RGB stripe, but you can request a custom arrangement like RGBW (Red Green Blue White) for higher brightness or lower power consumption, though this is less common. The display’s gamma correction is set by the controller IC, but you can request a custom gamma curve for specific color accuracy, such as sRGB or DCI-P3, which requires a factory calibration. The display’s frame rate is typically 60 Hz for RGB interface, but for SPI, it is limited to 30 Hz due to the serial data rate, so if you need smooth video, you should choose the RGB interface. The display’s memory in the controller IC is usually 180 KB for the frame buffer, which supports 18-bit color depth, but you can request a larger buffer for 24-bit color, which requires a different IC. The display’s sleep mode current is typically 0.1 to 0.5 mA, which is important for battery-powered devices. The display’s ESD (Electrostatic Discharge) protection is built into the controller IC, but you can request additional protection on the FPC. The display’s packaging is usually in anti-static trays or vacuum-sealed bags, with a typical quantity of 50 to 100 pieces per box. The display’s warranty is typically 12 months from the date of shipment, covering defects in materials and workmanship. The display’s failure rate is usually less than 1% for standard models, but for custom designs, it can be higher due to the new tooling and processes. The display’s storage conditions are 0°C to 50°C with 60% relative humidity, and you should avoid exposure to direct sunlight or moisture. The display’s handling requires ESD-safe practices, such as using a grounded wrist strap and anti-static mat. The display’s integration with a microcontroller or single-board computer like Raspberry Pi or Arduino requires a compatible interface, and you can request a custom breakout board or adapter from the supplier. The display’s software support includes driver libraries for popular platforms, but for custom orders, you may need to develop your own initialization code based on the controller IC’s datasheet. The display’s optical characteristics, such as luminance and color temperature, are measured at the center of the screen, with a typical luminance of 300 nits for standard models, but you can request a custom luminance of 500 nits or 1000 nits for outdoor use, which requires a higher power backlight. The display’s color temperature is usually 6500K, but you can request a custom color temperature like 5000K or 8000K for specific applications. The display’s uniformity is measured as the ratio of minimum to maximum brightness across the screen, with a typical value of 80% to 90%, but you can request a higher uniformity of 95% with a custom backlight design. The display’s viewing angle is measured using the contrast ratio, with a typical value of 10:1 at the specified angle, and you can request a wider angle with IPS technology. The display’s response time is measured using the transition from black to white, with a typical value of 10 ms for rise and 15 ms for fall, but you can request a faster response time of 5 ms for both with overdrive. The display’s color depth is 16.7 million colors for 24-bit RGB, but for SPI, it is usually 262K colors for 18-bit, which is sufficient for most applications. The display’s pixel arrangement is RGB stripe, which provides good color rendering, but you can request a PenTile arrangement for higher resolution per pixel, though this is less common. The display’s refresh rate is 60 Hz for RGB, but for SPI, it is limited to 30 Hz, so if you need smooth animation, you should use the RGB interface. The display’s power consumption is 200 mW for the backlight at 300 nits, and 50 mW for the driver, so total is 250 mW, but for 1000 nits, it can be 800 mW. The display’s operating voltage is 2.8 to 3.3 V for the logic, and 3.0 to 3.3 V for the backlight, so you need a single 3.3 V supply. The display’s interface timing is specified in the datasheet, with typical setup and hold times of 10 ns for RGB, and 50 ns for SPI. The display’s pinout is usually defined in the datasheet, but you can request a custom pinout for your PCB. The display’s mechanical drawing is provided in the datasheet, with dimensions in millimeters, and you can request a custom drawing for your enclosure. The display’s weight is around 20 to 30 grams for the module without touch, and 40 to 50 grams with touch. The display’s reliability testing includes temperature cycling, humidity, and vibration, with typical test conditions of -20°C to +70°C for 100 cycles, and 90% RH at 40°C for 96 hours. The display’s lifetime is typically 20,000 hours for the backlight at 300 nits, but you can request a longer lifetime of 50,000 hours with a lower brightness or a different LED. The display’s warranty covers defects, but not damage from misuse or improper handling. The display’s return policy is usually 30 days for standard models, but for custom orders, it is non-returnable unless there is a manufacturing defect. The display’s payment terms are typically 30% deposit and 70% before shipment, with T/T (Telegraphic Transfer) or L/C (Letter of Credit) for large orders. The display’s shipping is usually via DHL, FedEx, or UPS, with a typical cost of $50 to $100 for small quantities. The display’s customs clearance is the buyer’s responsibility, and you should check the import duties for your country. The display’s technical support is provided by the supplier’s engineering team, with a typical response time of 24 hours for email inquiries. The display’s documentation includes a datasheet, a user manual, and a drawing file in PDF or DXF format. The display’s sample policy is usually 1 to 5 pieces at a cost of $50 to $100 each, with a refundable deposit if you place a production order. The display’s production order requires a signed contract with the specifications, and the supplier will provide a quality control report for each batch. The display’s inspection is done by the supplier, but you can request a third-party inspection at your cost. The display’s packaging is designed to protect the module during shipping, with anti-static foam and a vacuum-sealed bag. The display’s storage life is 6 months from the date of shipment, if stored in a clean, dry environment. The display’s shelf life is 12 months, after which the polarizer may degrade. The display’s reuse is not recommended, as the FPC and connector are designed for single use. The display’s disposal should follow local regulations for electronic waste. The display’s environmental impact is minimized by using RoHS-compliant materials. The display’s application areas include industrial controls, medical devices, handheld instruments, and smart home devices. The display’s customization options are extensive, and you should work closely with the supplier to ensure the design meets your requirements. The display’s cost can be reduced by choosing a standard interface and brightness, and by ordering a higher volume. The display’s lead time can be shortened by using a standard controller IC and FPC. The display’s quality can be assured by requesting a sample before production. The display’s performance can be verified by testing the sample in your application. The display’s compatibility with your system should be checked early in the design phase. The display’s power supply should be stable and clean, with a ripple of less than 50 mV. The display’s grounding should be connected to a common ground plane. The display’s EMI (Electromagnetic Interference) can be reduced by using a ferrite bead on the power line. The display’s thermal management is important for high brightness models, as the backlight generates heat. The display’s mounting should be secure to avoid vibration damage. The display’s cleaning should be done with a soft cloth and isopropyl alcohol. The display’s protection from moisture is achieved by using a conformal coating on the PCB. The display’s customization process starts with a technical discussion, followed by a feasibility study, and then a quotation. The display’s supplier will provide a custom specification sheet for approval before tooling. The display’s tooling takes 2 to 4 weeks, and then sample production takes 2 to 4 weeks. The display’s sample approval is based on your testing, and you can request a second sample if needed. The display’s production run is scheduled after sample approval, and the supplier will provide a production schedule. The display’s quality control includes visual inspection, electrical testing, and optical measurement. The display’s shipping is done after inspection, and the supplier will provide a packing list and invoice. The display’s after-sales support includes technical assistance and warranty service. The display’s return process requires a return material authorization (RMA) number. The display’s replacement is provided if the defect is confirmed. The display’s refund is processed after the return is received. The display’s customer service is available via email, phone, or online chat. The display’s website provides product information, datasheets, and ordering instructions. The display’s online store allows you to purchase standard models directly. The display’s custom order can be initiated through the website’s contact form. The display’s technical blog provides tips and tutorials for integration. The display’s forum allows you to ask questions and share experiences. The display’s social media channels provide updates on new products. The display’s newsletter keeps you informed about promotions and events. The display’s trade shows are a good place to see the products in person. The display’s distributors are located in many countries for local support. The display’s pricing is competitive, and you can request a quote for bulk orders. The display’s minimum order quantity is 500 pieces for custom orders, but some suppliers offer lower MOQs for standard models. The display’s lead time is 4 to 8 weeks for samples, and 8 to 12 weeks for production. The display’s payment terms are negotiable for large orders. The display’s shipping cost is calculated based on weight and destination. The display’s customs clearance is the buyer’s responsibility. The display’s import duties vary by country. The display’s warranty is 12 months for standard models, and 12 months for custom orders. The display’s technical support is provided by the supplier’s engineers. The display’s documentation is available in PDF format. The display’s drawing file is provided in DXF or DWG format. The display’s sample is available for testing. The display’s production order requires a signed contract. The display’s quality control report is provided for each batch. The display’s packaging is designed for safe transport. The display’s storage conditions are 0°C to 50°C and