# Questions tagged [display]

Questions about LCDs, 7-segment LEDs, E-ink displays, etc.

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29 views

### POV fan display [closed]

I am designing a POV fan display using WS2812 140 LEDs and Arduino. I have tried to know how it works and found that the LEDs are provided serial data input with separate clock of each LED. I want to ...
60 views

### What is wrong with this LCD backlight boost converter circuit

I have been working with a dev board with the LCD backlight circuit shown below. The boost converted used is the TPS61041. On page 18 of the datasheet, there is an example of the backlight circuit ...
57 views

### How to wire 0.91/0.86 inch display to i2c?

I have a 0.91 inch display with a 4 pin I2C connection. I then realised that I needed to use a 0.86 inch display with the connector in the above image. I have searched on google on this but nothing ...
82 views

### Is this neon light display real or fake? how does it work? [closed]

Is this neon light display real or fake? if real, then how does it work? https://www.youtube.com/watch?v=xlcywgEMuGI
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### Soldering Header Pins Together to Multiplex Single Digit 7-Segment Displays

To multiplex two or more single digit SSD’s, each corresponding pin must be connected to that of the other displays, such as in this schematic. I’ve accomplished this with 4 displays by using a ...
54 views

### LVDS (from PTN3460) driven display shows fringed lines

I am developing a board which converts DisplayPort to LVDS. The LVDS is put through a PCIe switch and then fed to an APIX transmitter, which connects to the display. There's a second video path going ...
62 views

### HDMI Development: What Would Cause Thin Pink Lines?

I recently designed a board which produces an HDMI output for an oscilloscope so it is viewable on an external monitor. My prototypes seemed to work just fine with one or two mod wires. However, after ...
325 views

### Ghosting in VGA signal generation

So, I'm generating a 1280x1024 (native screen resolution) VGA signal using a Lattice HX8K > Yosys, according to these timings, and a PLL of 107.812Mhz of Pixel Frequency. I then pass it through a ...
51 views

### How do modern displays output data to pixels? [closed]

Do new displays still write pixels one at a time? I thought this was the case until I saw a video showing slo-mo footage of a display, in which it was clear that all of the pixels are on at the same ...
50 views

### Purpose of metal sheath in display cable?

I want to repair a display cable which I suspect has some broken wires. The cable seems to be wrapped in a metallized fibre cloth. (I don't know the correct name for it). What purpose, apart from ...
64 views

### LVDS data rate to TFT

I have a two LVDS Ports (A & B) coming from deserializers connected to a 10.25" TFT display. lvdsaclkp, lvdsaclkn, lvdsa[0:3]p/n lvdsbclkp, lvdsbclkn, lvdsb[0:3]p/n VESA: JEITA: What is the ...
77 views

### Calculating LCD display horizontal and vertical porch values

How should I set the porch and sync values given an LCD display? For example, say my FHD (1920x1080) display datasheet says its has a total vertical cycle of 1125. I have 45 clocks remaining (...
24 views

### How to find out which Linear Polarizer Film Angle is right for repair?

I recently bought a broken monitor on eBay. The seller partially tore off the polarizing film thinking it was a protector of sorts. Now I want to replace that film. How can I find out which angle (90°,...
106 views

### Make LCD reflective

If I don't care about dim light or darkness, can I make an LCD-display sunlight readable by removing it's backlight and replace it by a mirroring surface, followed by a diffusor?
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### Recommendation ITU-R BT.1729 test image for 5:4 display

For radiated emissions testing according to EN 55032 CISPR 32 with displays of category 4, there is a Recommendation ITU-R BT.1729 which specifies a reference test pattern. The pattern is designed for ...
41 views

### OLED SS1306 displays on one side only when using AVR

I have an I2C 128x64 OLED display here. I've tried using Arduino and everything works flawlessly. Now I'm trying this but just writing in straight-up C code. Majority of the display is garbled up. I'...
253 views

### LVDS single channel to LVDS dual channel conversion

I have an embedded linux board with a Nvidia Tegra K1 chip (Toradex TK1) with a single channel LVDS output up to 1920×1200 @ 24bpp. I would like to use the board with a dual channel LVDS display ...
46 views

### MIPI DSI display initialization not following standard DCS commands, uses 0xFE instead

I recently was looking at a MIPI DSI display for use in a potential product, when I noticed on its datasheet that the DCS commands it was using were not part of the official list I have, nor do they ...
66 views

### How do pixels in a LCD display are individually controlled by a electrode?

How do tiny subpixels in the Led displays are controlled by those indium tin oxide electrode.How do they provide different voltage for each pixel
51 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 ...
314 views

### Why backlight an LCD display with AMOLED? Can IPS terminology apply to AMOLED?

I've been reading about IPS LCD and LED/OLED display technology in general, and am a bit confused about the following product: HP Spectre x360 2-in-1 Laptop: 15.6" 4K, i7-8705G, 16GB DDR4, 512 SSD, ...
86 views

### Correct Initialization Routine for LCD Panel (HX8357D)

I have acquired a color 320x480 TFT LCD display based on a HX8357D driver. It is an Adafruit 3.5" Touchpanel display. I would like to use it for one of my projects based on Rust. Currently, there ...
135 views

### Keypad saved shifting display using Verilog

I'm designing a number exchange module, and so far I've been able to make it display on Seven Segment Display (S-S-D), like if I press 0 it shows 0... etc. I'm using 2 sets of 4-bits S-S-D (Common ...
41 views

### E ink display reading values

I want to create a project which involves reading of values of pixels on e ink display. I know there are e ink with touchscreen inputs but I was wondering whether it is possible to use only an e ink ...
51 views

### Interchangeable 7 segment display - CA and CC

In my application, I should control 4 display composed of 7 segments. I want to use a classic method with 4 BJT and segments all driven by a Micro. An update rate will show up each value on the ...
90 views

### ssd1306 (30 pin) oled display eagle library

I am designing an electronic project in Eagle PCB software. The project having a 30Pin SSD1306 Oled Display. I searched in the internet for the eagle library and i cloud not find a matching one. The ...
66 views

### Custom LCD display design considerations

I'm in the early stages of designing a device that will have a custom, backlit LCD display and an injection molded case. I've never worked with a custom LCD display, and have not yet spoken with any ...
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### Higher precision with less digits?

Consider an ideal digital milliammeter (zero resistance, zero uncertainty on AD converter input) with realistic (noisy, hysteresic, etc.) AD converter output and a $3½$ -digit display. Often when we ...
190 views

### I2C Communication Between STM32F3 and SSD1306

I am trying to write data to my 128x32 OLED display. I researched it online and found that it has the SSD1306 controller connected to the display. It uses the I2C protocol and it only has 4 pins (VCC, ...
75 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 ...
76 views

### FFC Connector Replacement [closed]

I'm looking for an PCB FFC connector to replace the FH26-24S-0.3SHW(05), which I cannot find stocked anywhere. I've looked for replacements with .3mm pitch, .2mm flex thickness, and 24 contacts, but ...
694 views

### What kind of display is this?

While investigating analog technologies I discovered these images of a quadraphonic 8-track player. All 8-track players I've seen before use analog voltmeters as displays rather than square graphical ...
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### Using port 0 in AT89C52 without pull up resistors

So at my university professor gave us following scheme to program this double 7 segment display on the right. At start I tried to simply adress it using P0=(someData) although it didn't work. Then I ...
400 views

### Constant flickering of TFT Display

We have an issue with our TFT display. The display constantly flickers while displaying. What are common causes for flickering in this type of display? How can we resolve this issue? It's a 3.5 inch ...
112 views

### Turning off the LM3914 dot/bar display driver per the datasheet

I'm designing a circuit with an LM3914 dot/bar display driver and want to shut off the entire bank of LEDs based on conditions in the circuit. I'm having some difficulty turning off the driver from ...
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### In which branch of engineering can I learn about display technologies like LCD, LED, OLED? [closed]

I am finishing high school this year and want to pursue a career where I can learn and develop display technologies like LCD, LED, OLED, and flexible displays. Can somebody please tell me what branch ...
87 views

### How to control a parallel OLED graphics display [closed]

I'm thinking of using a matrix OLED display like this one. This display uses a parallel interface very similar to those I've seen on text LCD displays, so I assume I'd control it in a similar way. ...
31 views

### Display Design - would combining OLED with a white source be more efficient?

To be clear, I'm not an electrical engineer, nor do I claim complete knowledge of how displays work. However, I have done research into displays (televisions, computer monitors, AMOLED phone screens)...
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### 16 Segment Display Driver ICs

I would like to know what are the available ICs for 16 segments display to control. I have 1 digit three 16 segment display so I want to control those three displays separately by microcontroller. ...
3k views

### Why are OLEDs used in screens insted of LEDs?

I was trying to google this question and couldn't find any information. And from reading some info on how they work i didn't find any significant difference asides from OLEDs being made out of organic ...
405 views

### 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 ...
149 views

### Debugging dual LVDS display panel color issue

I'm on TI's AM5708 platform (custom board) trying to drive this Full HD panel via TI's DS90C387 Dual-Pixel Display Interface. The SoC outputs 24bit RGB into ...
286 views

### PIC32MX UART Interrupt Not working

I am writing a program to send data from one microcontroller and receive the data using on another PIC32 microcontroller and display the received data on LCD. I am using UART2 of both PIC32MX to send ...
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### 16166 display programming

Along with my z80 development board I found a 16166 16*1 display. I have found datasheets for the electronics, it have 8 data (but can be run in 4 bit also) and 3 control, but I have failed to find ...
74 views

### How to determine wiring of unknown LED scrolling display board

My school has a LED scrolling display board from long ago in the main lobby. When I flip the power switch, it turns on and starts displaying zzzzzzzzzzz... There's a connector on the outside (2x10 ...
414 views

### Not understanding SSD1306 Oled display datasheet

Just out of curiosity I would like to write my own oled display SSD1306 I2C driver using arduino nano board and atmel studio 7. I analyzed the Adafruit I2C initialization which sends byte 0x00 after ...
82 views

### Is it safe to run Logic ICs at their maximum output current?

I am building a circuit that will ultimately output to 8 7-segment displays. I am going to be multiplexing these displays. The displays I chose are https://uk.farnell.com/kingbright/cc56-12surkwa/...
279 views

### LVDS display troubleshooting

I am currently working on a prototype connecting a SOC-board (Samsung ARTIK530) to a LVDS LCD display (DT070BTFT-PTS1). The display shows a very (!) distorted picture. I have tried fixing it using ...