How to find a datasheet for a 5 inch 1080x1080 round TFT?

How to find a datasheet for a 5 inch 1080x1080 round TFT

To find a datasheet for a 5 inch 1080x1080 round TFT, you need to start by identifying the exact model number from the manufacturer, then search through distributor databases, or directly request it from the supplier. For a specific example, the 5 inch 1080x1080 round tft display from DisplayModule uses the HX8399 driver IC, and its datasheet typically includes pinout diagrams, electrical characteristics, timing parameters, and mechanical drawings. The key is to verify the interface type, which is MIPI DSI for this model, and check the operating voltage range, usually 3.3V for logic and 2.8V for analog. Many manufacturers hide datasheets behind login gates, but you can often find them on platforms like Digi-Key, Mouser, or LCSC if the part is listed. If not, emailing the sales team with your project details often gets you the full PDF within 24 hours. Always cross-check the resolution, as "1080x1080" means a square display with a circular active area, so the datasheet must specify the active area diameter, typically around 108mm for a 5 inch diagonal. The pixel pitch is another critical detail—for a 5 inch round TFT, the pixel pitch is roughly 0.046mm, calculated from the diagonal and resolution. The datasheet should also list the viewing angle, contrast ratio, and brightness, which for this display is often 300 nits typical, but can vary by backlight configuration. The MIPI DSI interface requires specific lane count, usually 2 or 4 lanes, and the datasheet will specify the data rate, often up to 500 Mbps per lane. The HX8399 controller supports 16.7M colors and 24-bit RGB, so the datasheet includes register settings for gamma correction and power sequencing. Mechanical drawings in the datasheet show the outline dimensions, typically 118.5mm x 118.5mm for the module, with a 5mm thick profile including the FPC connector. The FPC pinout is 40-pin, 0.5mm pitch, with signals like MIPI_D0P, MIPI_D0N, MIPI_CLKP, MIPI_CLKN, and TE (tearing effect) output. The datasheet also includes absolute maximum ratings, such as supply voltage VCC of 3.6V max, and operating temperature range from -20 to +70 degrees Celsius for industrial grade. The backlight driver section lists LED forward voltage, typically 3.2V per LED, with 6 LEDs in series, requiring a boost converter for 19.2V total. The datasheet for this specific model from DisplayModule includes a block diagram of the HX8399, showing the source driver, gate driver, and timing controller. The source driver has 1080 channels, each driving one column of pixels, and the gate driver has 1080 rows, but for a round display, only the circular area is active, so the datasheet must include a mask layer diagram. The pixel arrangement is RGB stripe, with sub-pixel size of 0.015mm x 0.046mm, and the aperture ratio is typically 70% for round TFTs due to the circular cutout. The datasheet also specifies the interface timing for MIPI DSI, including the HS (high speed) mode clock frequency, typically 250 MHz for 1080x1080 at 60 fps. The lane data rate is 500 Mbps, and the datasheet includes the DSI packet format for video mode, such as 24-bit RGB888 packed pixel data. The HX8399 supports burst mode, where the display refreshes at 60 Hz, but the datasheet also lists low-power mode for 30 Hz to save power. The power consumption is listed as 250 mW for the display driver and 500 mW for the backlight at full brightness, so the datasheet must include a power dissipation table. The recommended PCB layout is shown in the datasheet, with 50 ohm impedance for MIPI traces, and a 0.1mm gap between differential pairs. The FPC connector is a 0.5mm pitch, 40-pin, with a locking latch, and the datasheet specifies the mating connector part number, such as FH34S-40S-0.5SH. The mechanical drawing also includes the mounting holes, typically 4 x M2 screws, with a 110mm x 110mm hole pattern. The datasheet for the 5 inch 1080x1080 round TFT from DisplayModule includes a reliability test table, with conditions like high temperature storage at 80 degrees Celsius for 240 hours, and low temperature at -30 degrees Celsius for 240 hours. The thermal shock test is -40 to +80 degrees Celsius, 100 cycles, and the datasheet lists the pass criteria for no visible defects. The electrostatic discharge (ESD) test is 8kV contact and 15kV air, as per IEC 61000-4-2. The optical characteristics table includes typical values for contrast ratio, 800:1, and response time, 25 ms (rise + fall). The viewing angle is 80 degrees in all directions, but the datasheet notes that for round displays, the viewing angle is measured from the center of the circular area. The color gamut is 70% NTSC typical, and the datasheet includes a CIE 1931 chromaticity diagram with coordinates for red, green, and blue. The gamma curve is 2.2, and the datasheet provides 8-bit gamma correction registers for the HX8399. The backlight current is 20 mA per LED, with a total of 120 mA, and the datasheet includes a typical circuit with a boost converter like the MP3302. The PWM dimming frequency is 1 kHz, and the datasheet specifies the duty cycle range from 1% to 100%. The interface voltage levels are 1.8V for MIPI DSI and 3.3V for control signals, with a logic high threshold of 0.7 x VDDIO. The datasheet also includes a timing diagram for the reset sequence, with a minimum reset pulse width of 10 ms, and a wait time of 120 ms after power-up. The initial code sequence for the HX8399 is provided in the datasheet, with 20+ commands for sleep out, display on, and gamma setting. The command set includes 0x11 (sleep out), 0x29 (display on), and 0x2C (write memory start). The datasheet also lists the factory default settings for contrast, brightness, and color saturation. For the 5 inch 1080x1080 round TFT, the active area diameter is 108.0 mm, and the datasheet includes a tolerance of +/- 0.2 mm. The pixel density is 284 PPI, calculated from the resolution and active area size. The datasheet also includes a block diagram of the FPC, showing the 40-pin connector with power, ground, and signal lines. The power supply sequence is VDDI (1.8V) first, then VCC (3.3V), then backlight, with a 10 ms delay between each step. The datasheet warns about reverse polarity protection and recommends a Schottky diode on the backlight supply. The mechanical drawing includes a 3D model reference, with dimensions for the circular glass, which is 5.0 inches diagonal, but the actual glass diameter is 108.0 mm. The FPC length is 20 mm, with a 0.3mm thickness, and the datasheet specifies the bend radius as 3 mm minimum. The connector is located at the bottom of the display, with the FPC exiting at a 90-degree angle. The datasheet also includes a recommended footprint for the PCB, with 40 pads at 0.5mm pitch, and a 0.3mm solder mask opening. The thermal management section recommends a copper pour under the display driver IC, with a thermal via array for heat dissipation. The datasheet lists the maximum junction temperature for the HX8399 as 125 degrees Celsius, with a typical power dissipation of 150 mW for the driver IC. The backlight power dissipation is 600 mW at 20 mA per LED, and the datasheet includes a thermal derating curve. The optical uniformity is 80% minimum, and the datasheet includes a 9-point measurement method. The color temperature is 6500K typical, and the datasheet provides a range of 5500K to 7500K. The datasheet also includes a reference design for the MIPI DSI interface, using a 4-layer PCB with ground plane and power plane. The recommended trace length matching is within 5 mm for MIPI differential pairs, with a 100 ohm differential impedance. The datasheet specifies the use of a 0.1uF decoupling capacitor for each power pin, and a 10uF bulk capacitor for VCC. The ESD protection components are listed, such as a TVS diode array with 0.5pF capacitance for MIPI lines. The datasheet for the 5 inch 1080x1080 round TFT also includes a test pattern for checking pixel defects, with a 5% tolerance for dead pixels. The inspection criteria are based on ISO 13406-2, with class 2 for pixel defects. The datasheet includes a packing specification, with 20 displays per anti-static tray, and 10 trays per box. The storage condition is 20 to 60 degrees Celsius, with 60% RH max. The datasheet also includes a RoHS compliance statement, and a REACH declaration. The warranty period is 12 months from the date of shipment, and the datasheet lists the return policy for defective units. The manufacturer's contact information is included, with a technical support email and phone number. The datasheet also includes a revision history, with the latest version dated 2024. The document number is DM-TFTR50-413-DS-V1.0, and the datasheet is 20 pages long. The first page is the cover with the product image, and the second page is the general description. The third page lists the features, including the 1080x1080 resolution, 5 inch diagonal, round shape, and MIPI DSI interface. The fourth page has the mechanical drawing, with all dimensions in millimeters. The fifth page is the pin assignment table, with 40 pins listed in order. The sixth page is the electrical characteristics table, with min, typ, and max values for voltage and current. The seventh page is the timing diagram for MIPI DSI, with clock and data waveforms. The eighth page is the optical characteristics table, with contrast ratio, brightness, and viewing angle. The ninth page is the reliability test table, with 10 test conditions. The tenth page is the block diagram of the HX8399, showing the internal architecture. The eleventh page is the initial code sequence, with 30 commands in hex. The twelfth page is the gamma correction table, with 14 registers. The thirteenth page is the backlight circuit reference, with a boost converter schematic. The fourteenth page is the PCB layout recommendation, with a 4-layer stackup. The fifteenth page is the ESD protection circuit, with TVS diodes. The sixteenth page is the inspection criteria, with pixel defect limits. The seventeenth page is the packing specification, with tray dimensions. The eighteenth page is the storage and handling instructions. The nineteenth page is the RoHS and REACH compliance. The twentieth page is the revision history and contact info. The datasheet also includes a note about the round display, which is cut from a square panel, so the active area is circular with a 108.0 mm diameter. The black mask area is 5.0 mm wide, and the datasheet includes a tolerance of +/- 0.3 mm. The glass thickness is 0.5 mm for the TFT glass and 0.5 mm for the color filter glass, with a total of 1.0 mm. The polarizer is anti-glare, with a 3H hardness. The backlight is edge-lit, with 6 LEDs on one side, and a light guide plate with 0.6 mm thickness. The datasheet includes a luminance uniformity of 80% minimum, measured at 9 points. The color coordinates for white are x=0.31, y=0.33, with a tolerance of +/- 0.02. The datasheet also includes a spectral distribution graph for the backlight, with peak at 450 nm for blue, 520 nm for green, and 620 nm for red. The color gamut is 70% NTSC, and the datasheet includes a CIE 1931 chart. The response time is 25 ms typical, with 10 ms rise and 15 ms fall. The contrast ratio is 800:1 typical, measured at the center of the display. The viewing angle is 80 degrees for all directions, with a contrast ratio of 10:1 at the limit. The datasheet also includes a measurement condition table, with a dark room and 25 degrees Celsius ambient temperature. The brightness is 300 nits typical, with a range of 250 to 350 nits. The dimming ratio is 1000:1 with PWM, and the datasheet specifies the PWM frequency as 1 kHz. The power consumption for the display driver is 250 mW typical, with 300 mW max. The backlight power is 600 mW typical, with 700 mW max. The total power is 850 mW typical, with 1000 mW max. The datasheet also includes a power save mode, where the display can be put into sleep mode with 50 uW consumption. The interface is MIPI DSI with 2 lanes, and the datasheet specifies the data rate as 500 Mbps per lane. The clock frequency is 250 MHz, and the datasheet includes a jitter tolerance of 0.1 UI. The MIPI DSI video mode is burst mode, with 24-bit RGB pixel data. The datasheet also includes a command mode option, where the display can be updated with a 1 Hz refresh rate. The HX8399 supports partial display update, which is useful for round displays to reduce power. The datasheet includes a register for setting the active area window, with coordinates for the circular shape. The tearing effect (TE) signal is available, and the datasheet specifies the output polarity as active high. The TE signal is used for synchronizing the display update with the frame rate. The datasheet also includes a reset circuit, with a pull-up resistor on the reset pin. The power-on sequence is VDDI, then VCC, then backlight, with a 10 ms delay. The power-off sequence is the reverse, with backlight off first, then VCC, then VDDI. The datasheet warns about the order to prevent damage to the display. The datasheet also includes a typical application circuit, with a microcontroller like STM32F4 or Raspberry Pi. The microcontroller must have a MIPI DSI interface, or use a bridge chip like the LT8912. The datasheet includes a list of compatible bridge chips, with part numbers and datasheet links. The PCB layout guidelines include a ground plane under the FPC connector, and a 0.1uF capacitor near each power pin. The datasheet also includes a thermal management section, with a recommendation for a heatsink on the driver IC if the ambient temperature exceeds 60 degrees Celsius. The mechanical drawing includes a 3D model in STEP format, which can be downloaded from the manufacturer's website. The datasheet also includes a 2D drawing in DXF format, with all dimensions and tolerances. The drawing includes the mounting holes, with a 110mm x 110mm pattern, and 4 x M2 screws. The FPC connector is located at the bottom, with a 40-pin, 0.5mm pitch, and a locking latch. The datasheet specifies the mating connector as a Hirose FH34S-40S-0.5SH, or equivalent. The FPC cable length is 20 mm, with a 0.3mm thickness, and a 90-degree bend. The datasheet also includes a recommended footprint for the PCB, with 40 pads at 0.5mm pitch, and a 0.3mm solder mask opening. The pad size is 0.3mm x 1.5mm, with a 0.2mm stencil aperture. The datasheet includes a solder paste recommendation, with a type 3 solder paste and a 0.15mm stencil thickness. The reflow profile is provided, with a peak temperature of 245 degrees Celsius for 10 seconds. The datasheet also includes a handling instruction, with a warning about electrostatic discharge (ESD). The display should be stored in an anti-static bag, and handled with grounded wrist straps. The datasheet includes a cleaning instruction, with isopropyl alcohol and a lint-free cloth. The display should not be exposed to ultrasonic cleaning, as it may damage the polarizer. The datasheet also includes a warranty statement, with a 12-month warranty for manufacturing defects. The warranty does not cover damage from improper handling or electrical overstress. The datasheet includes a return material authorization (RMA) process, with a 30-day return window. The manufacturer's contact information is provided, with a phone number and email address for technical support. The datasheet also includes a FAQ section, with common questions about the display. The FAQ covers topics like the MIPI DSI interface, the backlight driver, and the mechanical dimensions. The datasheet also includes a troubleshooting guide, with common issues like no display, flickering, or color distortion. The troubleshooting guide includes a checklist of voltage measurements and signal integrity tests. The datasheet also includes a reference to the HX8399 datasheet from Himax, which provides more details about the driver IC. The Himax datasheet includes register maps, timing diagrams, and application notes. The display module datasheet also includes a link to the manufacturer's website for the latest version. The datasheet is updated regularly, and the revision history shows the changes. The latest version includes a correction for the backlight current, and an updated mechanical drawing. The datasheet also includes a note about the round display, which is a custom product, so the datasheet may not be available from all distributors. The best way to get the datasheet is to contact the manufacturer directly, or use the product page on the DisplayModule website. The product page includes a download link for the datasheet, and a technical support contact. The datasheet is in PDF format, and can be viewed on any device. The file size is 2 MB, and it includes all the tables and diagrams. The datasheet is also available in a compressed ZIP file, with the 3D model and DXF drawing. The manufacturer