Questions tagged [pixels]

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Pass bandwidth of backing light for LCD display

A stardard industry LCD display is composed of several parts. Polarizer film and color filters produce and image by masking the light from a source positioned behind the LCD itself, the so called ...
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2answers
66 views

How to convert pixel map to voltage/angles?

My end goal is trying to get something rendered using lasers and a MEMS scanning mirror. There are not that many resources online for this, but it seems like the basic idea is pretty applicable to ...
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1answer
53 views

Charge transfer in CCD

I have a basic doubt about charge transfer between pixels of a CCD. Let's consider this animation (picture taken from wikipedia): A precise time sequence of applied voltages between gates and bulk ...
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0answers
71 views

Is my Wiring OK? - WS2811 LED Strips

I am looking to install WS2811 LED Strips inside coving on walls for a down lighting effect. I have drawn up a wiring plan but i am not sure if it is correct / the best way to do it. Is there any ...
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0answers
44 views

What is the purpose of non-black dummy pixels in a linear CCD?

I'm studying the datasheet of Sony ILX511 linear CCD (PDF). On the Clock Timing Diagram, first 32 or 33 (depending on the mode) clock cycles give out dummy pixels, and only 18 of them are Optical ...
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0answers
64 views

What are these mobile pixels?

I've got this picture under my microscope for an old Samsung Galaxy Ace mobile phone, I'd like to know what are the different pixels in the rows with a separation in the subpixels? And how are they ...
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1answer
83 views

LCD screen: can this problem be caused by the inverter?

I'm repairing a HP 530 laptop with bad screen image. The image does not flicker, the corruption pattern is static. If I connect an external monitor through the VGA port the image is fine, therefore I ...
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0answers
152 views

WS2815 Erratic Color display

I have a two strips of WS2815 neopixel LED lights (400 pixels per string) being driven by WeMos D1 minis with the WLED library to control them. Since the two strips are on opposite sides of my porch, ...
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2answers
91 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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2answers
209 views

How to drive up to millions of ws2812 or APA104 LEDs? [closed]

I've driven more than 2k of APA102 from a computer using a USB to SPI interface for an interactive project. Since then I've been curious how I could made the same setup for even a large pixel area, up ...
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0answers
28 views

SK6812, what happens if a pixel fails?

I plan to use SK6812 RGBW LEDs for my projects. There was a question of reliability. What happens if one of the pixels fails? Will the signal go further? If not, which way to look?
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2answers
91 views

Camera pixel size limit reached?

Just read here that Samsung has produced a camera sensor with a pixel size of 0.8 micron ie 800nm. Is it possible, or useful, for the pixel size to go below the wavelength of the light being imaged? ...
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97 views

EMWIN Keil LCD display shows half the screen completely!

I have written one project in Keil for STM32F103RE && ILI9325 2.8" TFT LCD, So my problem is this, the GUI_SetBkColor(GUI_BLUE); Function only fill only ...
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1answer
125 views

Where can I get a display screen with 30 Hz or less refresh rate? [closed]

I am experimenting with a camera recording a display screen. Based on what I have read - camera recording a screen will have flicker if the refresh rate and frame rates are not synced. My mobile ...
5
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1answer
961 views

How do LCD screens repair themselves?

Hey, electronics people: A few months ago, I cleaned a spot on an LCD flat screen. Whatever it was, it was stuck on there pretty good and I guess I pushed down on it too hard (actually wasn't hard at ...
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1answer
54 views

Why there is difference between image size and video resolution of a specific camera? [closed]

I was searching to buy a camera, but I saw in specs they wrote: 2MP(full hd) video recording 5MP image size Why the vido size is 2MP but image size is 5MP? How ...
4
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3answers
2k views

Which color puts the least “strain” on an LCD pixel to avoid burn-in/ghosting?

I am developing a user interface on a cheap Kinco color LCD HMI unit. After leaving a test UI on the screen for about 3 days, there was a very decided "ghosting" effect. I was able to eliminate the ...