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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1answer
136k views

Differences between OLED, LED, LCD, and TFT Screens

I have heard about these different types of screens on DIY websites and in consumer electronics. What are the differences in these types of screens and what are their advantages and disadvantages?
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769 views

Why don't wires block out the backlight of LCD/TFT displays?

Every explanation I've seen about how TFT/LCD screens work only talks about one pixel at a time. My question is: how are thousands of pixels and subpixels connected and controlled? I assume that they ...
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2k views

Digital RGB interface EMI filtering

Consider the following system: where: The motherboard contains a LCD controller (SSD1963 from Solomon Systech) and other components (application processor, solenoid drivers, power supplies, etc.) ...
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1answer
13k views

TFT LCD interface with a Microcontroller: Getting Started

I have a small 3.5 in TFT LCD display from a Chinese manufacturer. It doesn't have an integrated LCD controller. The documentation claims it is a "16 bit RGB/parallel interface" and it uses a Renesas ...
4
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1answer
11k views

STM32F407 FSMC interface with TFT LCD

I've written some code to make a FSMC connection between my STM32F407VET6 and a TFT LCD 240x320 pixels. I was checking this several times, however I can't recognize what's wrong. I'm using 16-bit data ...
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3answers
3k views

TFT LCD pixel clock filtering

I would like to know how to filter the pixel clock in order to reduce emitted radiations. Block diagram The LCD controller is part of a motherboard. A board, connected at the other side of the FFC ...
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2answers
2k views

Microcontroller requirements for TFT display

I want to know if I can drive this 320x240 TFT display: http://www.buydisplay.com/download/manual/ER-TFT032-2_Datasheet.pdf Which has this controller built-in with 168KB dedicated RAM: http://www....
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3answers
2k views

Arduino LCD Display drawing image issue

I am playing with 3,5" (400x240 chinese unknown 8-bit controller driven) TFT display which is placed into Arduino Mega 2560 R3 board. My final goal is taking .raw data from SD card and drawing it on ...
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1answer
253 views

Why doesn't my LCD work?

I have an 2.8" LCD that it's controller is ILI9325. I'm trying to use it. for start off, I have written a simple program. the program is this: ...
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2answers
2k views

Using a TFT display that has no controller

I have been using LCD screens (with the controllers) for my projects for a long time. Now I thought of learning how these screens actually work, the part before they go to the controllers. Well ...
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2answers
5k views

How to drive scavenged TFT screen?

How can I drive a scavenged TFT screen, from an MP4, without its datasheet? I'm thinking about making a low cost bluetooth wrist watch to check my messages on my phone on the go. I'm going to open-...
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2answers
47 views

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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1answer
2k views

What is the difference between TFT LCD interfaces?

I am looking at driving a small TFT and have found that the driver chip supports various interface methods, however I can't see why I would choose one over another. The options are: i80 SPI VSYNC ...
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4answers
8k views

Mirror-inverted and wrong-colored display

I'm trying to address a (cheap chinese) ILI9320-driven 320x240 LCD display from an Arduino Mega 1280. I've got it to work via the UTFT library. Well, not fully; something is shown, but the colors seem ...
2
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1answer
132 views

Line down center of TFT display

I'm trying to connect a Sharp LQ070Y3DG3B TFT display to an Epson S1D13517 display controller. The test image and a bitmap that I've loaded are showing up fine, except there is a aqua line vertically ...
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1answer
2k views

How does a TFT panel work?

I have to use a TFT panel but I have never used any before and I really can't get how it works and how I can interface it with a microcontroller. I found INT057ATFT which seems to have an integrated ...
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1answer
288 views

Matching LCD controllers to LCD compatible panels

Over the years, I've accumulated numerous LCD panels and controller boards salvaged from TVs, Monitors, Cell Phones, digital picture frames, GPS devices and tablets. I would like to reuse the panels ...
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2answers
353 views

Beaglebone Black LCD/TFT/display and I2C2

I am considering buying a 4D Systems I2C LCD for the BBB, e.g. a 7" touchscreen, which uses the I2C2 bus. The question is, will I be able to use other peripherals on I2C2, on a home made cape, ...
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3answers
893 views

Driving Nokia TFT LCD with STM32

How do I increase the refresh rate of a Nokia LCD that I'm driving using the STM32F103 microcontroller? The LCD is 132*162 and takes a 9-bit instruction/DATA with RGB for each pixel in 565 format. ...
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0answers
646 views

How to set the gamma?

I have a TFT 2.2 inch Display. like this: Its controller is ILI9341. I ported it to my MCU and everythings work fine. one of the most important things in using a display is Gamma. when you would use ...
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2answers
642 views

Can I do anything with this LCD? I doubt it

Right, so I have ripped the 1.7" (ish) TFT module out of an HP PhotoSmart C4780. Despite HP's best efforts I can plainly see that it is made by AUO. No model number on it though. Now, I have never ...
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3answers
561 views

Driving a 24 BPP display in 5:6:5 mode

I have a TFT display which accepts 24 Bits Per Pixel (BPP) display data, but my connector mechanism supports only 5:6:5 mode. What is the prefered way of getting the display to drop the extra pixel ...
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2answers
454 views

What is TFT driver SSD1963 data voltage

I recently bought a TFT module driven by SSD1963 I have experience on t6963 and ks0108 and by a quick look it seems ok to make a MCU interface to ATMega128. What is confusing to me is the difference ...
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1answer
523 views

Endianess on STM32F4 FSMC output

I'm currently setting up a STM32F407 to evaluate a display module which utilizes a Renesas R61526A Displaycontroller. I was able to set up the project using CubeMX no problem, and the FSMC seems to ...
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1answer
121 views

Flash IC/ CMOS RAM/ microSD in TFT LCD

I have seen cases where TFT module contains flash or SD card on module. What is the need of flash in LCD? In simplest way, we connect RS,RD/WR,CS,RESET pins and 7/8/16/24 bits data pins of controller ...
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2answers
1k views

Getting an 8-bit LCD display interface to work

I have a LCD which this controller is used with: LCD Single Chip Driver. I am trying to get it to work with an 8-bit interface, but in my kit I can't find the three pins that are mentioned in the ...
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1answer
308 views

How to find connectors for Densitron TFT displays

I'm having a hard time to find information about the connectors for a TFT display I just bought from Densitron. The cable is physically similar to FFC/FPC, but the terminals are not straight, so I can'...
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2answers
50 views

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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1answer
1k views

Nucleo STM32L476 and Arduino TFT shield pin mapping

I want to use an Arduino TFT shield (ILI9341) on a Nucleo STM32L476 developement board. This shield use 8 bits MCU mode and work well but the pin implantation for the Arduino connector on the Nucleo ...
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3answers
99 views

Unsual sizes of TFT, LCD or OLED panels?

On Stackoverflow there was a question about a round TFT display, but that answer was difficult and pricey. What is the possibility of finding rectangular LCD/TFT/OLED displays that are small in ...
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1answer
2k views

Beaglebone Black TFT display

Is there any way to connect to LCD display modules through SPI as can for example be done with the Rapberry Pi through the use of https://github.com/notro/fbtft/wiki. I would also like to use one with ...
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2answers
389 views

A good TFT LCD for a project [closed]

I am starting a project and I need a colour screen preferably clear to shuffle through images (think of it as the digital photo frames). However, I need something bigger than the usual screens, maybe ...
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1answer
885 views

24-bit parallel TFT module on circuit designed for 16-bit parallel

I've designed a circuit that connects a 16-bit parallel LCD TFT module to the SPI-connector on a RPi, but bigger TFT modules often have 24-bit parallel. Can I use a 24-bit parallel TFT with my circuit ...
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2answers
2k views

how to initialize SD1289 LCD TFT?

Friends, I've tried to initiate TFT LCD with chipset SD1289, Photo of the result : Init code that I've written ...
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0answers
34 views

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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1answer
71 views

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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0answers
279 views

How to rotate a square on a TFT ILI9486 screen with Arduino

Problem Summary I have a “square” rotating on my 3.5 Inch TFT screen (ILI9486 driver) with dots/circles at each of its 4 corners. It is connected to an Arduino MEGA 2560 There are a few issues with ...
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1answer
574 views

ILI9341 with STM32 SPI troubles

I am trying to interface with an SPI ILI9341 screen using an STM32 microcontroller. I know there are a whole lot of things that can go wrong with these interfaces, and I've spent an awful lot of time ...
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1answer
83 views

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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3answers
394 views

For a STM32, can I use a quad SPI and SD card as a framebuffer for a LTDC LCD driver?

I'm using STM32F756 The SD card is 20 MHz and I know the performance would suck for an 800 x 480 display, but will the hardware do it? Or is RAM the only medium required? I screwed up, have no ...
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2answers
683 views

Is using a display panel as a light sensor conceivable?

Though the question may sound naïve at first, I still wonder if it would somehow be possible to use an LCD/TFT/OLED or other Panel as an image-sensor. From my understanding of how these kinds of ...
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2answers
1k views

How to address a 16 bit LCD using 8 bit bus?

I need such a TFT with SSD1289 controller, but with 8 bit bus. Does anyone know how to modify it?
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1answer
451 views

A quick question about TFT LCD

Can I use this 1.8" TFT LCD to make it show graphic? Or all the TFT LCD can display graphic?
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2answers
4k views

Hacking a display [closed]

I'm a computer engineer, otherwise total n00b to electronics. I have this old 15" display (ltn152w5). I would like to turn it in a st. valentine gift for my girlfriend. I would like to frame it and ...
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2answers
70 views

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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3answers
82 views

How to drive a 3” TFT

I want to display 2 or 3 images in a loop (every 5 seconds or so) on a 3 inch TFT. The TFT can be found here, Resolution 240x400 Screen 3 Inch Tft Lcd with MCU Interface It uses an MCU interface, I ...
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1answer
1k views

TFT LCD interface

I am little confused in basic understanding of LCD interface. Many times datasheet suggest 8/16 bits MPU interfacing. Here, for interface we assign GPIO's of microcontroller to respective data pins ...
0
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1answer
3k views

Graphics LCD - how to avoid flicker?

I have a generic question about Graphic LCDs with built-in controllers and RAM. I observe that whenever I change a large portion of the screen with say a new image or a object (or just clear the whole ...
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1answer
68 views

Question about how the circuit of TV display works

I have a question about how the circuit of TV display works. Does current flow through the gate lines (horizontal lines)?
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1answer
644 views

LCD Data Pins from different ports

I am using LPC1769 and it's port pins as below image. DB0 to DB15: Port pins of LPC1769 used as data pins for LCD Control Signals for LCD: C/D : Register Select Command or Data /WR : ...