China 3.5 inch touch screen portrait format Manufacturer, Supplier, Factory

The VXT800BYH-01 is an 8.0-inch 800 x 1280 portrait TFT LCD module driven by an HX8260 over a 4-lane MIPI DSI interface on a 24-pin FPC, and the reason a panel this size ships on 24 pins is the interface. Four differential data lanes plus one differential clock pair carry what a 24-bit parallel RGB bus would need fifty pins to carry, so a 1,024,000-pixel display fits a host with a DSI peripheral and almost no other pins to spare. It is the most portrait panel here - 800 x 1280 in a 16:10 column - with square 0.13455 mm pixels at 188.8 PPI, 16.7M colours stated outright, and a diagonal of 203.09 mm that lands within 0.05 per cent of the nominal 8.0 inch. And TE is brought out on pin 4, which is the tearing effect output: with a 2.0 MB frame buffer too big to double cheaply, being able to stay single-buffered and still write tear-free is the difference between a workable design and an expensive one. Three things need settling before you commit. The logic voltage is stated two ways and they do not agree: pin 7 is annotated IOVCC 1.8V while the electrical table's supply-voltage-for-logic row gives 2.8 V typical, and the thresholds are written as fractions of VDD without saying which rail, so a 1.8 V host is either comfortably inside or well outside depending on which figure holds. The storage temperature runs -30 to +70 against an operating range of -20 to +70, so the high end is not wider at all - storage should be wider at both ends and here it is not. And the backlight's seven-in-series array is derived rather than stated, and it puts 27 mA through each string against a 30 mA absolute maximum.

The VXT350LQZ-01P is a 3.5-inch 320 x 240 QVGA TFT LCD module with a 4-wire resistive touch panel, and the touch specification is the reason to look at it. Section 6 publishes what almost nothing in this size does: linearity of +/-1.5% after environmental and life testing, terminal resistance per axis, insulation resistance of 20 megohms minimum, response time under 10 ms, light transparency of 78% minimum, operation force of 80 gf typical, surface hardness of 3H minimum, 100,000 pen sliding cycles and 1,000,000 hitting cycles - with the test conditions for each. Two other figures are unusually trustworthy. Brightness carries both a floor and a ceiling, 280 minimum and 420 maximum around the 350 typical, so you can see the production spread as well as the worst case.The viewing angles are the narrowest in our range at 25 degrees typical on one horizontal side and 45 everywhere else, and while the specification states a 6 o'clock viewing direction, it is the horizontal pair that is asymmetric rather than the vertical one - so confirm the orientation with us and expect a narrow cone.

Victronix VXT430TWH-06P is a 4.3-inch TFT LCD module in portrait, and it carries a four-wire resistive touch panel. That combination is easy to overlook and hard to replace. A resistive panel responds to pressure rather than to a finger's conductivity, so it works with gloves, wet or oily hands, a stylus, or the tip of a tool, and it costs less than a capacitive stack — at the price of multi-touch, of 80% transmittance against the 85% a capacitive panel gives, and of a surface that takes a deliberate press. The shape suits a vertical column: the active area is taller than it is wide, so readings stack one per row, scrolling lists and status panels fit naturally, and a portrait enclosure needs no rework. The display itself runs 24-bit RGB on a 40-pin FPC from a single 3.3 V rail, and 130,560 pixels need only 255 KB of frame buffer — small enough that a microcontroller with 512 KB of internal SRAM needs no external RAM at all. Most optical figures carry a stated floor: 310 cd/m² minimum brightness, 400 minimum contrast, 80° minimum viewing angle. Two things want settling before you commit, and we set them out rather than leave them for bring-up: the specification writes the resolution as 480 × 272 while the geometry says the panel is 272 wide by 480 tall, and the driver IC is named two different ways in two different places.

The VXT021MCSA-02 is a round TFT LCD module — the only round display in our range. Its 53.28 mm active diameter is 2.0976 inches, driven as a 480x480 array at 229 PPI. Built for smart watches: 230 µA sleep current, a 1.45 mm bezel, and 56.18 × 59.71 × 2.2 mm outline. Optics are specified with minimums, not just typicals — 530 cd/m² and 800:1 guaranteed, 600 and 1000:1 typical, with 80° viewing in all directions. Rated -20 to +70°C.

The CTP-T700GA-51 is a 7-inch capacitive touch panel in G+G construction, and the only panel in our range with true ten-point multi-touch — the other three 7-inch panels all stop at five. That matters for two-person operation, multi-finger gestures and collaborative interfaces. An Atmel maXTouch 641T controller drives a 16 by 28 channel grid, behind a 1.1 mm cover glass rated at 6H with impact energy of at least 0.35 J. Suited to collaborative terminals, education displays, industrial HMI and kiosks.

The VXT700IXN-06C3 combines a compact color display with 10-point capacitive touch and chemically strengthened cover glass. Its glass-on-glass touch structure, LVDS input and I2C touch connection suit space-conscious equipment interfaces.