Tianma P0350QVF1ME00 3.5 Inch 320×240 RGB / TTL TFT LCD Panel

Tianma P0350QVF1ME00 3.5 Inch QVGA RGB/TTL SFT Panel

Tianma P0350QVF1ME00 is a 3.5 inch QVGA TFT LCD panel for compact industrial equipment, handheld instruments and replacement programs that need RGB/TTL interface in a small format. The public data lists 320×240 resolution, 350 cd/m² typical brightness, parallel RGB one-channel 8-bit plus SPI, 54-pin FPC, -20 to 70 °C operation, SFT normally black transmissive mode, 88/88/88/88 viewing angle, 800:1 contrast, WLED 6S1P backlight without driver, 30K-hour backlight life, 25 ms response time, 16.7M colors at 60% NTSC, 70.08×52.56 mm active area and 76.9×63.9×3.15 mm outline.

This model differs from lower-viewing 3.5 inch TN panels because it lists SFT normally black mode and all-direction viewing angles. That can be useful for compact instruments that are viewed from changing angles or installed in tilted housings. Typical projects include diagnostic tools, portable measurement devices, small machine controllers, medical accessory panels and service terminals. The selection should still be controlled by exact interface, pinout and mechanical fit, not by 3.5 inch size alone.

RGB/TTL integration requires host timing review. Confirm data width, sync signals, pixel clock, voltage level, SPI use, reset, orientation and FPC pinout. The public record says the backlight is without driver, so the host board or accessory circuit must provide the correct LED drive and dimming. If the product previously used a different Tianma suffix, compare backlight string, connector and timing before sample approval. These details decide whether the display can be dropped into the existing electronics.

The 350 cd/m² brightness suits indoor or controlled-light equipment. It is not a sunlight-readable module. If the product uses a resistive touch overlay, cover lens, dark window or protective film, the visible brightness and contrast should be checked after assembly. The 800:1 contrast and SFT viewing characteristics can improve perceived quality, but front-panel optics still affect the result.

Mechanical review should use the 70.08×52.56 mm active area and the full 76.9×63.9×3.15 mm outline. Confirm bezel opening, FPC bend radius, connector height, PCB placement, mounting pressure and service access. For handheld tools, test cable strain and drop shock. For replacement programs, collect the old panel label, photos and drawing so LCDind can compare against the current requirement.

RFQ Checklist

• Existing panel model and equipment details if this is a replacement.
• RGB/TTL timing, 8-bit bus, SPI use, voltage and 54-pin FPC definition.
• Backlight driver, dimming method and power budget.
• Mechanical drawing, active-area window, FPC route and mounting pressure.
• Cover lens or touch overlay, viewing angle and lighting condition.
• Sample quantity, forecast and required approval schedule.

Engineering FAQ

Is this the same as any 3.5 inch QVGA RGB panel? No. FPC pinout, timing, viewing mode, outline and backlight design must match.

Does it include a backlight driver? The public data lists WLED without driver, so host-side LED drive must be reviewed.

Is it wide viewing? The record lists SFT normally black mode with 88/88/88/88 viewing angles.

Can it be used outdoors? Not by default. 350 cd/m² is mainly for controlled-light equipment.

What should be validated first? Validate timing, FPC mapping, backlight drive, mechanical fit and final-window readability.

Engineering Review Note

Use P0350QVF1ME00 when the project requires a 3.5 inch QVGA Tianma RGB/TTL panel with SFT viewing behavior. Send LCDind the host interface, drawing and backlight requirements before purchasing samples.

Prototype Validation and Replacement Boundary

For P0350QVF1ME00, sample validation should include the actual host timing, 54-pin FPC connection, backlight driver circuit, image orientation, color order, reset behavior and operation after temperature cycling. Because the backlight is listed without driver, the LED drive circuit is part of the system design, not an optional detail. If the display flickers, runs too hot or dims incorrectly, the issue may be in the host backlight circuit rather than in the LCD cell. Keep the tested LED current and dimming method with the approval record.

Replacement buyers should send the existing display label, cable photos, connector drawing, front-panel image and host-board information. A 3.5 inch QVGA panel from another project may look compatible but use a different FPC order, backlight string, operating mode or active-area offset. LCDind should compare the current requirement against the exact Tianma P0350QVF1ME00 drawing and not only against catalog size. If a substitute is required because the original model is unavailable, define whether cable, firmware or enclosure changes are allowed.

For new equipment, decide early whether the product needs physical keys, no touch, resistive touch or capacitive touch. Adding touch later can change brightness, front-panel depth, FPC routing and qualification. If the standard display is kept no-touch, verify that the UI remains usable through keypad or encoder operation before the enclosure tooling is released.

For production purchasing, include the model suffix and interface in every internal note: P0350QVF1ME00, RGB/TTL, 54-pin FPC, WLED without driver. This prevents warehouse or sourcing teams from mixing it with another 3.5 inch Tianma QVGA panel. If LCDind ships samples for comparison, label each sample with model and interface before the customer begins firmware testing.

If the equipment has certification requirements, keep display changes under engineering change control. A different backlight or cable may affect EMC, thermal behavior or mechanical reliability even if the screen image appears identical.

For final approval, test the longest expected operating session, not just startup. Compact instruments may run from battery, charger or vehicle supply, and backlight behavior can change with input voltage or temperature. Record the approved power condition and backlight setting so later production tests are repeatable.

Keep these conditions with the sample record.