Questions tagged [display]

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

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48 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 ...
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64 views

How to Inkjet print an OLED display? [closed]

There is no DIY method for creating your own display on a medium-run scale. Display technologies I've considered include: LCD, E-Ink, and OLED. It would be nice to have a way to create a dynamic ...
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1answer
97 views

What IC can I use to shift 3.3v logic to 30v? [closed]

I'm trying to drive a VFD which needs 20-30v to operate correctly from a Teensy (3.3v logic levels). What IC could I use to convert the logic signals to a higher voltage? I'm not sure if this is the ...
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60 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 ...
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2answers
313 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 ...
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1answer
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 ...
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1answer
46 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 ...
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1answer
53 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 ...
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0answers
60 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 (...
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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°,...
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1answer
91 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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1answer
26 views

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 ...
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0answers
39 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'...
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0answers
215 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 ...
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0answers
35 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 ...
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1answer
60 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
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0answers
43 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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2answers
278 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, ...
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1answer
70 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 ...
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1answer
129 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 ...
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1answer
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 ...
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1answer
50 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 ...
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1answer
79 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 ...
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0answers
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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2answers
74 views

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 ...
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2answers
174 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, ...
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2answers
72 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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1answer
72 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 ...
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1answer
693 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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1answer
27 views

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 ...
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2answers
332 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 ...
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2answers
106 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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1answer
47 views

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 ...
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1answer
83 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. ...
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0answers
29 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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1answer
101 views

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. ...
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2answers
2k 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 ...
0
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2answers
342 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 ...
3
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1answer
139 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 ...
1
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1answer
258 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 ...
0
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1answer
45 views

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 ...
2
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0answers
70 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 ...
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1answer
376 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 ...
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4answers
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/...
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1answer
263 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 ...
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0answers
53 views

How Backlit LCD Moniter Works, How it Looks Without a Backlight

I'm thinking about repurposing an lcd backlit monitor's front panel as an 'overlay' type panel over something else without a backlight. My understanding of the function of a backlit monitor that the ...
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0answers
43 views

Zebra strips with possible gaps

My Breville oven display shows some missing characters and some dimmed characters, after 2 crosstown moves. I have disassembled other devices in the past, but those were repairs for other people. I ...
0
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3answers
85 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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3answers
370 views

Why aren't laptops with transparent displays a thing? [closed]

I just realized that the display on my 2012 Macbook Air is transparent. I had the screen brightness of the built in display on the lowest (off) while using an external monitor, and the sun came ...
0
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1answer
98 views

ILI9341 Library for arduino

I'm writing an arduino library for ILI9341 tft display. I tried to write on the display but nothing appears. Why? How can I solve the problem ? My source code: ...