# Square RGB TTL TFT Display - 4" 720x720 - with Capacitive Touch - TL040HDS20CT-B1502A

**Type:** Product page · **SKU:** ADA5794 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/square-rgb-ttl-tft-display-4-720x720-with-capacitive-touch-tl040hds20ct-b1502a.html ([markdown](https://core-electronics.com.au/square-rgb-ttl-tft-display-4-720x720-with-capacitive-touch-tl040hds20ct-b1502a.html.md))

## Retired product

This product is retired and no longer available for purchase. Replaced by: TFT Display.

**Replacement:** https://core-electronics.com.au/catalog/product/view/sku/TFT%20Display

## Description

This is a screen for advanced hackers who like the look of a big rectangular TFT screen with tons of pixels and a capacitive touchscreen overlay. The 4" display has 720x720 16-bit full-color pixels and is an **IPS** display, so the color looks great up to 80 degrees off-axis in any direction.

The TFT driver is ST7701S and uses both TTL RGB 'dot clock' data. Note that unlike the other funky-shaped displays, this particular model *does not require SPI pre-configuration*. It pops up immediately into 'RGB' mode - which makes it a great panel to start with. However, note that despite having a 40-pin connector, it does not have the same pinout as standard 'rectangular' 800x480 (4.3", 5" or 7") or 480x272 (4.3") displays. It's a new kind of beast for sure.

To make stuff light up you'll need a chip that can perform TTL RGB TFT driving, which means a powerful microcontroller such as the ESP32-S3 with octal PSRAM or a computer like a Raspberry Pi (with either direct-DPI connection or an intermediary chip like the ICN6211). Either way, it's not something you can wire up to your Feather or Arduino!

**This is just the display module! No PCB is included!**

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/A/D/ADA5794-1.jpg)