Questions tagged [display]

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

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what kind of display technology is this?

There is some kind of backlit display in the product markets which is most likely displaying behind the plastic. I don't know if this is related to LCD or electronic technology or maybe some kind of ...
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What is a training pattern ? How does it lock the CR Clock

This is regarding the Display port ( Section 3.5.1.3) How sending the D10.2 characters lock the Clock recovery circuit in the Display port during the link training sequence ?
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What is AUX CH handshake in Display port

In the section 2.5.3.3 Link Initialization through Link Training "There is another exception for a box-to-box connection. When DisplayPort Source Device is resuming the transmission, the Source ...
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20 views

Do we need to send HSync, Vsync, HFP, VFP, HACTIVE in the Display port

On going through the display port specification, in the main stream packet structure I see only the pixels getting packed between blanking start and blanking end. Don't we need to send HFP, HBP, Hsync,...
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22 views

What is inter-lane skew insertion in display port

I am reading the display port specification facing some issue in understanding some terminology 1. What is inter lane clock skew 2. In the fig 2.8 what is bus steering ?
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29 views

What is the difference between 960RGB and 1920RGB?

In MIPI DSI display resolution, what is the difference between "960RGB * 1920" and "1920RGB * 960"?
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23 views

Interfacing a MIPI DSI dislay

I'm designing an interface board to connect a MIPI DSI LCD screen to an RPi. The screen is a KWH070KQ40-C08 (link to pdf), but the datasheet isn't quite clear and I ...
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1answer
64 views

Can I use the 1.8 inch TFT LCD SD slot for other purposes other than displaying images on the display?

Can I use the 1.8 inch TFT LCD SD slot for other purposes other than displaying images on the display? For example, storing text files on that SD card (that's on the display's SD slot)? Can I use that ...
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53 views

How to display 20 2-digits numbers?

I'm working on something where i need to display 20 independent 2-digit numbers that are located in different places. In current prototype there are 20 extruded in plastic numbers with led backlight. ...
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46 views

What system would I need if I want to store large amounts of text data and be able to control a TFT LCD display? [closed]

My goal is to build an electronics project where I can store large amounts of text data (books) where I want to display that text on a TFT-LCD display. Right now, I have my display hooked up to an ...
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32 views

How to display Keyboard's binary to Digital waveform

How can I display to a monitor a digital waveform of any key when pressed in a keyboard? I was thinking to use an arduino or a raspberry. For example, when I press the small letter 'a' on a keyboard (...
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63 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 ...
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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 ...
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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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37 views

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 ...
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58 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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63 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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334 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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52 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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54 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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77 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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123 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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25 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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119 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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33 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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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'...
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58 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
70 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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64 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
350 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
125 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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144 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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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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54 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
105 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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69 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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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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210 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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80 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
82 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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698 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
30 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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475 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
117 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
50 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
92 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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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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109 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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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 ...
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473 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 ...

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