Questions tagged [tft]

TFT is a thin film transistor. However in common use it normally refers to a type of LCD display technology that uses thin film transistors located close to the pixels to allow higher contrast and beter multiplexing than passive LCD displays.

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STM32 C library for ILI9341 TFT LCD with 16-bit data bus?

I'm using FSMC with ILI9341 LCD and I have some troubles with the LCD. The LCD comes in lot of different sorts, but this one do I have. I'm using this library but the problem is that I get only two ...
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What are the bare minimum number of pins needed to connect to an ILI9488 tft in order to turn on the LED backlight?

I've bought myself one of these 3.5" TFT panels: https://www.aliexpress.com/item/32829704426.html and an accompanying 40 pin fpc to header adapter so that I can plug it into a breadboard. (...
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Is it possible to make an OFET in a home lab?

Is there a way to build an OFET at home? (low tech, no deep vacuum and plasma, without toxic/hard to dispose chemicals) What can be the minimum budget for that? While conductive polymers are pretty ...
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How do I test TFT LCD?

I decided to make my own display that I can connect it to Raspberry pi or Jetson nano. so I've recently bought TFT 480x480 LCD with ST7701S and RGB interface. I think I'm providing valid signal, but ...
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Driving an LCD backlight using a PNP transistor

I'm trying to turn on/off the backlight of this LCD for the power saving when my ESP8266 goes to deep sleep. Because the ESP8266 has a maximum output current of 12mA and the LCD needs a current about ...
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How data is sent to a raw TFT?

I have used TFT drivers before but now I want to challenge myself by connecting an FPGA to a raw TFT without a driver. I am having hard time understanding the basics of the signals : how RGB pins are ...
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How do I get this to work 3.2 ”TFT 480x320?

Help please. I am using STM32F401CCU board to connect to 3.2 ”TFT 480x320. I can't get it to work, the display just glows white and nothing happens. [http://imgs.elgrad.net/Upload/sub-4/21450.pdf]2 ...
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CC2541 Interface with ST7789V based 1.14" TFT Display

I am working off a custom board having CC2541 from Texas as the Main Controller and a 1.14" TFT Display being controlled via ST7789V Drive IC. These two are connected over the SPI Interface. ...
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Correct Wiring for Adafruit 2.2" TFT display w/ sd card

Apologies for a potentially frowned upon question, but Adafruit's documentation for the 2.2" TFT display with sd card breakout is a little lacking. Essentially, they describe the display and sd ...
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Difference between LVDS, MIPI, DPI and DSI

I'm on a project that involves TFT displays and Raspberry Pi Compute Module 4. I noticed that there are several acronyms, protocols confusing information. As I understand it, there are protocols: DBI:...
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Using an RGB TFT screen on the Raspberry Pi 4

I want to use the HT0700EI02A TFT screen on the Raspberry Pi 4 Compute Module. Raspberry Datasheet: https://datasheets.raspberrypi.org/cm4/cm4-datasheet.pdf Screen Datasheet: https://cdn.ozdisan.com/...
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Custom TFT Screen Question

I'm looking to get a custom Resistive Touch TFT screen made for a project. The company have specified that the screen will utilize a F31L-1A7H1-11040 type connection to go between the screen and ...
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How to Identify my TFT LCD Driver Chip

This is one of my TFT LCD which I have no Technical details. How can I find which driver chip they have used? I have previously interfaced TFT based on RA8875 driver. So I Have a basic idea. I have ...
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TFT interface with FSMC RS Pin setting Issue

I am interfacing TFT LCD with STM32F407 using FSMC. The examples shows Addressing command and data address of LCD like this. ...
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TFT display wiring on Sparkfun Pro Micro

Please help me configure the wiring for this TFT display. I’ve tried using the Waveshare TFT display with both the Sparkfun Pro Micro and the Raspberry Pico but had very little success. Only the ...
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Non white lines on 1920x180 LVDS controlled TFT

We are integrating a LVDS 27" 1920x1080 panel with a commercial DVI to LVDS controller board. We have a PC, that has a DVI output, and we connect it to the Video controller. The video controller ...
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Understanding how TFT driver operates (ILI9486)

I'm trying to understand how to interface TFT driver ILI9486. I'm doing this because I want to control TFT display with PIC microcontroller and not AVR (for which libraries already exist). I own the ...
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How much current does the back light of ILI9341 LCD take?

I'm planning to do a turn-on-back-light construction with transistors like this: Where the LED is the back light of the LCD ILI9341. But to select the resistors, I need to find first how much current ...
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GMSL Deserializer to LCD Link Rate

I need to calculate the Link Rate for my GMSL Deserializer which is connected to a 800 * 480 TFT Display. In that case, I stumbled upon this Article On the last few lines, they are asking to multiply ...
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Transform TFT to AMOLED

I was wondering if it is possible to transform a TFT LCD into an AMOLED as both are active matrixes. The composition seems to be similar. AMOLED TFT (LCD) And if it wouldn't be possible, could I at ...
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How is a TFT array made?

The more I get into TFT arrays, the more I'm lost. I know what it does, but how does it look like? Can you split a display and just hold a TFT? Can you buy a TFT on glass, without the rest of the ...
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How to adjust both brightness and contrast of a TFT LCD display

I am developing an HMI using the display "S039QWQ01HS" and I have the requirement to provide control to adjust the brightness and contrast of it. For the brightness control, I have already ...
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problem with using ili9341 TFT LCD with stm32f103RE

i successfully used a HAL code i found on Github for driving an ili9341 TFT LCD with SPI then I rewrote the code with registers. Part of my code works and i am able to fill pixels with color but when ...
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Video format using LVDS signalling

I have a 3.1inch TFT. I have the below two pins Can someone tell me what does the 2 pins do? My questions : So, I can select either 6 bit or 8 bit for the whole communication and can't change in-...
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4DLCD display doesn't work with ESP32 via SPI

I have ESP32 custom made board and I cannot make it work with 4DLCD-35480320 (no touch) display via SPI. I triple checked all the wiring. Everything works except the display. I used Arduino IDE and ...
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Car Head Unit LCD LVDS to HDMI

I've recently picked up a head unit for my car and I am trying to get a HDMI signal to it. I've taken it apart and had a look at the hardware, and it seems to be using a single ribbon cable to drive ...
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How to interface MIPI DSI with a microcontroller

I'd like to learn about interfacing a TFT LCD with a microcontroller via the MIPI DSI protocol and writing a program for it. Both have suitable number of pins, some microcontrollers support MIPI DSI ...
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Custom HDMI-to-( TFT or LVDS ) decoder/driver

I am working on a custom-made handheld PCB based around a PI Compute Module 3+ and one of the hardest steps I have found is how to include an HDMI-to-50pin-TTL driver on my PCB to run an LCD TFT 7&...
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LCD Power sequencing

According to datasheet of LCD TFT ( https://www.gms-ds.com/fileadmin/produkte/pdf/DLC0700BIG-1.pdf ) page 11 there is power sequence necessary for proper initialization of LCD. On the other hand at ...
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Microcontroller and design for multiple displays

at my day job I'm an application level developer, but I have an idea that I would like to prototype thats a bit more on the microcontroller side. Basically I want to be be able to display some static ...
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Minimum wiring for remote ST7735R SPI TFT display

Figure 1. ST7735R 1.8" TFT colour LCD. Image source: eBay. I have an ST7735R working on an Arduino Nano as shown below. Figure 2. Current setup. I want to try mounting the display remotely (< ...
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SPI MOSI line only hits 1.2V for speeds above 500kHz and below 4MHz (3.3V logic)

I'm trying to drive a ST7789 TFT display (datasheet) with an ATTiny-416, but for some reason SPI fails at speeds above 500kHz. So far I've had these results: 500kHz: pass 666kHz: fail 1MHz: fail ...
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Why are graphic displays still so expensive? [closed]

As a new electronics enthusiast, I've been able to score a lot of components for very cheap, ranging from beefy MCUs in the 10$ ballpark to heaps of ICs for sub-dollar prices. However, buying a coffee-...
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Why shows the effect shown in the video below left-right asymmetry?

I made this video which shows what happens when I move the point of a wooden chopstick over my TFT-LCD screen, with firm pressure. It's remarkable that one can see that there is a difference between ...
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Can you get "raw" TFT display panels where you drive the gate and drain lines directly?

I am learning about different display types and how I might interface them with raw electronic components, e.g., TTL chips, op amps, function generators for scan line sawtooth, etc. CRT raster is ...
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Setting HSYNC and VSYNC registers

I am using the FT801 (datasheet) to drive a Newhaven 4.3" TFT display (datasheet). The TFT datasheet specifies the normal timing parameters (hsync/vsync peroid, front porch, back porch) on page 6. ...
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Looking for a 14 pin FFC, FPC connector for 1.8" display with unused space on the sides

Good evening, I'm looking for a connector that can house 14-pin connector display. Problem is that it has some extra space on the side which would not fit into regular connector. Does anyone knows ...
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TFT pinout tracing

I am total noob but curious when it comes to electronics, sorry if it's dumb or unachievable (shouldn't be). Just bought ESP32, played with it and realized I need a display, found a 7-seg one with ...
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Capacitor on clock line of TFT display

Short version (can provide more information if wanted) we have a display (TFT with TTL driver) that we control via PIC32 and Epson Display IC. The supplier changed their driver which should have been ...
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2 votes
2 answers
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TFT RGB LCD construction and

I am trying to understand the construction of an RGB TFT LCD that has brightness control in it. I could not understand how does the TFT color LCD pixels glow? Does each of the pixel has its own light ...
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Allwinner H3 TFT LCD display 40 pins

So I want to modify this board in order to add a 40 pins tft connector to drive a 5" LCD 800x480 display so the user can "flip" between HDMI and TFT. I have no idea where to start, could you give me a ...
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Ghosting Issues with IPS and TFT Panels ( from Waveshare and Sony ZUltra)

I've bought a used Waveshare IPS LCD and it has a ghosting issue, were as if you turn it on after about 30 seconds it starts to have ghosting and also burning on the edges effects, I am 90% sure that ...
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In a thin-film transistor (on insulating substrate) what is the difference between putting a load on the source or drain side of the transistor?

My question was incorrectly posed, because I didn't include the capacitor connecting the gate to one of the terminal. So in fact this question is regarding common source vs common drain comparison...
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How can I make my ILI9486 Display not show my frame until I'm done? (Flickering!)

I have a ILI9486 TFT display and I am using an LPC1768 with it. The issue I am having is in the following: ...
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Why do we need to continuously refresh a high resolution graphics LCD while we don't need the same for a character LCD?

It is very easy to interface an MCU with a character LCD (let say, 16x2, 20x2, 20x4, etc.) because we don't need to constantly refresh what is displayed. Once we send what we want to see, it is ...
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STM32 TFT not displaying solid color

I am trying to use this display with an STM32F0 using SPI. I begin by setting up the peripherals using the following ...
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What is the right order for 16bit data on 8bit 8080 data bus

I'm trying to create a program to drive a TFT LCD with an ILI9486 in 8bit but I don't know if I must send the configuration data and commands MSB or LSB first. The color data for the pixels in 16bits ...
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Connect TFT LCD screen with flex band to breadboard

I'm asking for clues on how to do this, I didn't found much over the internet as everybody buys their LCD screens with a mounting to the breadboard of as a shield for arduino. The TFT screen I bought ...
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What register or setting can control the brightness of an ST7735 based 1.8" TFT Display?

I'm using a KMR-1.8" display which uses a ST7735 driver and it is working ok with the Adafruit_ST7735 library. The problem is the display is very dim once the library has initialized. If I reset ...
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Can I rip the screen off the Adafruit Mini Color TFT with Joystick FeatherWing? [closed]

I'm looking for a small color screen, and I came across the Adafruit Mini Color TFT with Joystick FeatherWing. But I want it to be a bit smaller, and I don't need the joystick and buttons on it. ...
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