Lcd Definition and 77 Threads

I noticed on the commute home today a car with a LCD rear view mirror and I wondered whether, if I were driving it, I'd be able to focus on it the same as I focus on my car's glass review view mirror? I need glasses to read, and that includes a computer, so figured a LCD screen that close, even...

When shining a flashlight at particular LCD displays, an interesting interference pattern appears, consisting of parallel or concentric lines. It closely resembles Quetelet rings seen on dusty mirrors and glass panes. Quetelet rings are formed when light from a dust particle interferes with the...

Determine $\textit{gcd}(2^4 \cdot 3^2 \cdot 5 \cdot 7^2,\quad 2 \cdot 3^3 \cdot 7 \cdot 11)$ and $\textit{lcm}(2^3 \cdot 3^2 \cdot 5,\quad 2 \cdot 3^3 \cdot 7 \cdot 11)$ ok the example appeared to have combine the 2 sets on gcd but I am still ? there is no book answer for this:confused:

I have a small LCD clock and a corner of the LCD glass cracked and separated. This small region of the glass lines up with one of the pads on the circuit board and the result is that one of the segments is non-operative. I look at the LCD glass and I can't see any sort of circuit trace. Is the...

I want to create an uneven surface, and have its surface color change by controlling pixel colors on an LCD screen. My first thought is that creating an LCD screen that's anything beyond flat or curved would be impractical, so would it be possible to use fiber optic cables to redirect pixel light?

Hello I am no expert so i apologize if the answer is trivial.I was wondering, if they can manufacture a transparent transistor on every (sub)pixel of LCD glass screen, why are they using "COF (Chip-On-Flex) or COG (Chip-On-Glass construction)" to connect every (sub)pixels' tiny wire at the end...

$$\tiny{g1.1.2 \qquad UHW412}$$ \begin{align*}\displaystyle S&=gcd(2^4\cdot3^2\cdot 5\cdot 7^2,2\cdot3^3\cdot 7\cdot 11)\\ &=gcd(35280,4158)\\ W|A&=126\\ \end{align*} ok I tried to find a direct example but the powers and bases are mixed the answer came from W|A just interested in...

Good morning people. Recently I started programming in assembly language my PIC16F877A. Success. Now I wanted to work with a LCD display (more specifically a 16x2 LM016 display). At first I did not know the commands until I saw a datasheet and this page...

After a day of tinkering I finally figured out how to control a -style LCD display from an ATTiny2313 ( ATTiny2313 Datasheet )class ATMEL AVR microcontroller. There are a lot of websites out there claiming to show you how to do this on similar AVRs. I tried about 10 of them and, intriguingly...

Hello all, I needed a bare LCD screen without the driving circuitry for my project. So I opened up the 16x2 LCD module (https://www.sparkfun.com/datasheets/LCD/ADM1602K-NSW-FBS-3.3v.pdf) and separated the panel from the PCB. Now I have the panel with the ZEBRA connector hanging from it...

Hello, I need some assistance on a current project I'm working on. Here is some basic background information: I am currently trying to use a "makeshift" SLM, spatial light modulator, to impose a diffraction pattern so that when I shine a laser on it, the beam is diffracted into a donut shape...

Does anyone know where you can buy vials of cyanophenylcyclohexanes or other lcd materials to make my own lcd displays or the polarized plastic/glass. I have found the ITO coated glass for the electrodes.

I have an LCD display I'd like to use in a collimated HUD display, however it seems that I can't get the light (image) from it to collimate properly. I'm trying to use a lens with the focal distance of 4.5 cm. When I place the display 4.5 cm away from the lens' center I expected to achieve the...

I was told in the industry people use ZeMax ASAP Code V ... to do design. However, I cannot find a trial version of them to practice. Is there anyother sofftware which are free?

Hi, For someone who's familiar with LC's: How to derive the expression for free energy density of an hybrid aligned LC cell? what should be the vector for the director? I already familiar with the cases of splay and bend cell but couldn't understand how to derive it to the case where the cell is...

Today, I've been looking into TFT LCD display tech for a bit, trying to figure out how pixels are actually colored on the screen. - A) Out of necessity, because I'm trying to build a small ARM microcontroller powered board with a display on it. B) And out of curiosity, because I don't really...

I have the code of 8 bit ALU and code of lcd controller mounted on spartan 3E fpga kit. but i am unable to sync the program. Please help me with it! Thank you!

How common are piezoelectric transformers in computer LCDs?

I was recently asked to help with some A/V stuff at my church. The goal was simple: Display HDMI video from a laptop to two LCD TVs. Since distance was an issue, I purchased an active HDMI-to-Ethernet converter. I've included a diagram for reference. When I went to plug the 3' HDMI cable...

I'm in need of some help understanding the viewing angle of a basic LCD. I am replicating a product that contains a backlit LCD from a similar product. The original product has an orange display that is clearly viewable at most angles. The similar product has a blue display that has poor...

I need help in building a LCD flicker meter using photodiode and a current amplifier. The aim is measure the LCD pixels's flicker that can be detected by human eye so as to have a representation as electrical signal. This is to use it in cases where it's hard to judge if there is a flicker...

Hi, does anyone know if this is possible? It's a large tv and would use about 500w, I was hoping to use a 48V100ah lithium battery pack.

Another question for you? Find the least common denominator of 3/(2x-2) and x/(5x-5) I came up with 10?

Hi pf, I just noticed that when light shines onto my tv screen (when it is off) you see thin bands of colors reflecting back (see picture attached). I just wondered why this was and also why it ONLY happens if DIRECT light (from a bulb or the sun) hits it. Also, you only ever seem to get 4...

Hi, I was looking through a pair of 3D glasses last night at my mobile phone screen and saw something really cool. If the screen is lit and you tilt it, at various angles you see a circular rainbow effect. The different colours all form perfect circles around each other. I have been trying to...

Hey guys so I'm working on a project with an Arduino. I need the Arduino to read from a LCD to tell it what the voltage of a capacitor is. If the voltage is to low I would like it I switch the circuit on to charge the capacitors back up. Anyone know where a good starting point would be? Thank...

Homework Statement 1/z - 1/2z - 1/5z = 10/(z+1) This is the equation presented right after in the textbook where the author explains how to use the LCD to convert this equation into a more understood linear equation. Homework Equations Here is the example before this equation...

Hi, I have read loads on LCD operation and in particular NT-LCD and understand the twisting of the light by the LC. Everywhere i read it states that "the thickness of the cell is crucial for correct operation" but does not say why! Why is this? Is it to do with the pitch of the LC helix...

Hello, I have observed that if by chance a hair strand manages to cling to LCD Screen like TV or laptop screen, a small region near the hairline shows chromatic abberation. Is it due to some diffraction or Interference? Please explain.. Thanks in advance

I have a generator which after being regulated, outputs 70mA through 3V. (I should say the amps go through the voltage right?) In some circuits I may be using diodes. Some advice me that the voltage drop is 0,7. Others say it's dynamic, that I should divide the driving voltage over the...

I am currently trying to convert an old Sharp XG-NV2U LCD Projector into a spatial light modulator, and have gotten stuck. The panels don't seem to be interfacing with the computer anymore, which is a problem since I want to use them to project diffraction gratings. Using two polarizing...

Hello, My name is Jon Proietti and I am an intern at a digital signage company. We've been looking into the possibility of using full color LCD displays outdoors. We want to increase the light output through the LCD so that it will be more easily visible in direct sunlight. We purchased a...

I have a Samsung 55" LCD TV that is over the warranty. The model is LN55C630K1F and version is SQ01. The screen start flashing like the screen get darker and flash quite bright at like 4Hz intermittently. At first I can change channel or change screen display and it will stop. But is slowly...

got my hands on an old phone, and recovered the LCD panels (it's a flip phone, with an external panel) anyone know where I can find a controller for a WD-X0908W or 7271993D01 lcd panel? or any other means of interfacing with a computer or arduino? thanks!

Here's a couple of programs that I really couldn't figure out some of their lines: This function checks if the 1602 is busy, I suppose it means whether data are being passed to the registers of 1602: bit LCD_Check_Busy(void) { DataPort= 0xFF; // Dataport is P0. What does this do? Is...

I'm looking for a 42" - 46" LED HDTV lately, and I keep looking at these TVs on sale that have incredibly low reviews and skipping over them. However, upon reading the "bad reviews" it seems everyone is saying "TV is fantastic, but the sound is bad." Here's just one TV for example...

This is an lcd took from an old device http://www.mediafire.com/?vta388a2uezc5pa I cannot find the datasheet of this lcd and I don't even know its number and it seems a little bit change since it has a lot of pins I counted the pins and found them nearly 75 or 76 and I cannot find any thing...

What causes this effect? What am I seeing?

All the LCD monitors have very limited view angle. When one looks at the monitor even partly from a side of it, the Intensity and the Colors of the picture change very drastically. Why is it so? Is it just because that the Polarized panels are used for the monitors? Or the Liquid Crystals too...

Hi, I would like to make a mount for my LCD monitor, since there aren't any mounts here. I want the mount to go up and down, left and right, far and close. This one: https://www.amazon.com/gp/product/B000ID7QNI/?tag=pfamazon01-20 is easy to make, since gravity has nothing to do with it. But...

I don't get out to stores due to health issues, but my wife has asked me to do on-line research on LCD TVs. We have a big honkin' piece of furniture holding our stereo and our CRT TV, and she would very much like to free up that space. I can down-size the stereo with no problem, and if I can...

Hello, I'm working on a robotics project with one of my friends for an (relatively small) competition at my school. Anyways part of our project involves interfacing an LCD screen to an FPGA however we're having a problem with that particular aspect of the design. The clock signal on our...

Does anyone know how I can make printer LCDs do something like this: [PLAIN]http://mthruf.files.wordpress.com/2010/06/129202434713447013.jpg Short of paralleling the RX line on the screen to a PIC?

Am trying to write the configuration section for hd44789 display connected to pic16f84 micro controller, and i didn't understand from where can i get the data sent to the ports for the configuration...Example: MOVLW 03H ;Why 03? MOVWF PORTB CALL CLOCK ; Subroutine previously defined CALL...

There are a couple of products on the market which allow you to attach an external desktop gpu to the laptop and then use an external monitor and play games using the the desktop gpu instead of the weaker gpu in the laptop. It's a great idea but it means that you must carry an external...

Is there a way to turn a non-backlit LCD into a backlit LCD? My TI-89 graphing calculator is difficult to see in dim lighting. Got any ideas? You would think that by now, TI and HP would have some color/backlit LCDs on the calculators.

Driving 15" LCD Possible? Hey Physics Forum, I have some large LCD's such as those out of laptops and I was wondering if they can be turned into a monitor for a computer or something such as a project screen. I'm not so much looking for a step-by-step or any instructions because I'm not that...

I brought a small bottle of LCD cleaner & its amazing, leaves no streaks or anything behind. But i go through it like water & its a bit pricey. I generally read the 2 main ways are: Distilled water mixed with white Vinegar. & Distilled water mixed with 70% Rubbing alcohol, some say...

Hi, I was looking through a pair of 3D movie glasses (the polarised sort) while looking at my lcd monitor. I was confused by a couple of things: - When I tilt the glasses 45 degrees from horizontal, the image in both lenses turned blue, and when i tilted the glasses 45 degrees from...

Hello,I recently found, yes found a DVD player headunit for a car in the desert. The touch portion of the screen, which was glass, was shattered, but the screen itself was intact. (More or less, save some scratches and the erosion of the matte finish in some areas) I have gone through the unit...