China capacitive touch panel for education display Manufacturer, Supplier, Factory

The VXT350PNO-01P is a 3.5-inch 480 x 272 TFT LCD module with a 4-wire resistive touch panel, Resistive sensing responds to pressure rather than to a finger's conductivity, so it works with gloves, wet hands, a stylus or a tool tip - which is why it remains the choice for industrial and medical equipment. The backlight is the most trustworthy figure in the document, because it is confirmed three independent ways: the block diagram states the circuit as 1 * 6LED, six in series; 19.2 V over six gives exactly 3.20 V per LED, which is the typical forward voltage the electrical table states; and the connector carries one cathode and one anode, which is what a single string looks like. Reliability is equally solid - nine tests, all at 240 hours, with a stated 50,000-hour MTBF.

The VXT400MCCA-01 is a round TFT module: 720 x 720 pixels in a square array with a circular active area of 101.52 mm diameter. It is the largest round module we offer — the others are 1.6 and 2.1 inches — and at 720 x 720 the highest resolution, at 180 PPI. The round shape suits products whose face is already circular: instrument gauges, thermostats, rotary controls, speaker and hub covers, and automotive clusters. Designers should know that the circle covers only 78.5% of the pixel array, so the four corners are invisible and content must stay within about 45 mm of centre. It runs MIPI DSI with four data lanes, and the capacitive touch interface sits on the same 30-pin connector — interrupt, I2C, reset and two dedicated supply pins — so one flex and one socket cover display and touch. Separate 1.8 V and 3.3 V rails mean 1.8 V host logic connects directly with no level shifting. The module is 2.09 mm thick, the thinnest in this size class.

The VXT430HNS-01-W is a 4.3-inch transmissive TFT module with 480 x 272 resolution, an anti-glare polarizer, and an operating range of -30 to +85°C, without touch. Its most useful property only appears when you compare it with a sibling: it shares the mechanical envelope, connector and pin-out of the VXT430HWE-03-W, which is the same module at 800 x 480 — same outline, same 40-pin assignment, same contrast and viewing angle — with one third the frame buffer at 255 KB. That makes resolution a choice you can defer rather than a decision that locks your mechanics. Pixels are exactly square at 0.198 x 0.198 mm, so circles, dials and round indicators need no artwork correction. Brightness is given as 440 minimum, 550 typical and 660 maximum, with contrast at 640 minimum and 800 typical. Reliability covers ten tests including vibration and 60 G shock, with MTBF of 50,000 hours. Two gaps are stated plainly: logic supply current is not published, and storage temperature is not wider than operating.

The VXT177HSS-13 combines 500 cd/m² typical brightness with a 4-wire SPI interface in a compact 1.77-inch TFT LCD. An ST7735V driver and 12-pin connection make the module an option for embedded designs that prioritize display brightness and serial connectivity.

The VXT156HX1B-01 is a 15.6-inch VA TFT LCD combining high static contrast with a Full HD widescreen format. Wide viewing angles, an anti-glare surface and dual-channel LVDS support integration into indoor monitors and information terminals.

The VXT104QXHA-03 is a 10.4 inch XGA TFT LCD module with high brightness, wide viewing angles and PWM backlight control. Its LVDS interface and wide operating temperature range suit integration into industrial equipment and embedded display systems.