Bare LCD Driver

[Visitor]

Greetings,

I came across a dozen HannStar HSD043i9w2-A01 TFT-LCD displays today for a good price (free). These are 4.3" displays with 480×272 resolution. These displays have a 24-bit parallel interface (8× red, 8x green and 8x blue), and a resistive touch screen.

I take the 24 bit parallel interface to mean that these displays don't have a display driver chip?

Am I oversimplifying thinking that adding a circuit board with an LCD driver, a resistive touch screen driver and a boost circuit to drive the LED backlight wouldn't be too difficult?

Any tips from people who have done this? Favorite driver chips?

Datasheet

Datasheet of the -B01 version with additional details about LED backlight and other info.

 

[Visitor]

 

[rjenkinsgb]

They do have a controller onboard to translate the RGB, clock & Sync inputs & timing to pixel locations and intensities.

It looks very much like a "DPI" type interface?
The Raspberry Pi boards have built-in support for DPI display, so it may be worth trying one with one of those screens.

More info here:

Raspberry Pi Documentation - Raspberry Pi hardware

The official documentation for Raspberry Pi computers and microcontrollers

www.raspberrypi.org

 

[Visitor]

Ahhhh, this makes sense. I was thinking of an I2C or SPI type of interface, as is used with ESP8266/32 chips. I'll compare what's on the flex cable to the RaspPi DPI interface and see how they match up.

These displays are listed on ebay as a replacement for displays on GPS devices but without any specific details.

Should have guessed if my surplus electronics place is giving them away that they might not be the most useful

Thanks for the info – you learn something new every day if you're not careful!