how to build an lcd display in stock

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If you have ever wondered what it took to make your own custom graphic LCD from scratch, this video from [Applied Science] is worth a watch. It’s concise and to the point, while still telling you what you need to know should you be interested in rolling your own. There is also a related video which goes into much more detail about experimenting with LCD technology.

[Applied Science] used microscope slides and parts purchased online to make an LCD that displays a custom graphic when activated. The only step that home experimenters might have trouble following is coating the glass slides with a clear conductive layer, which in the video is done via a process called sputtering to deposit a thin film. You don’t need to do this yourself, though. Pre-coated glass is readily available online. (Search for Indium-Tin Oxide or ‘ITO’ coated glass.)

The LCD consists of a layer of liquid crystal suspended between two layers of conductive glass. An electrical field is used to change the orientation of crystals in the suspension, which modulate the light passing through them. Polarizing filters result in a sharp contrast and therefore a visible image. To show a particular shape, some of the conductive coating is removed from one of the layers in the shape of the desired image. The process [Applied Science] uses to do this is nearly identical to etching a custom PCB.

Parts of LCD technology can be quite hackable. Neither of these videos are brand-new, either. Have any of you taken on the challenge of DIY LCD displays? We’ve seen experiments with electrochromatic glass using old LCD displays, as well as experiments in playing with polarized light to hide secret messages on LCD screens.

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Every aspect of the light imaging system in Pro Display XDR is crucial to the overall quality of what you see onscreen. Each element builds on top of the last to create a display with unbelievable brightness and contrast.

Typical LCDs are edge-lit by a strip of white LEDs. The 2D backlighting system in Pro Display XDR is unlike any other. It uses a superbright array of 576 blue LEDs that allows for unmatched light control compared with white LEDs. Twelve controllers rapidly modulate each LED so that areas of the screen can be incredibly bright while other areas are incredibly dark. All of this produces an extraordinary contrast that’s the foundation for XDR.

For even greater control of light, each LED is treated with a reflective layer, a highly customized lens, and a geometrically optimized reflector that are all unique to Pro Display XDR. Through a pioneering design, light is reflected, mixed, and shaped between two layers to minimize blooming and provide uniform lighting.

Converting blue light to white is a difficult process that requires extremely precise color conversion. It’s why most display makers use white LEDs. Pro Display XDR accomplishes this conversion with an expertly designed color transformation sheet made of hundreds of layers that control the light spectrum passing through them.

Pro Display XDR extends exceptional image quality to the very edge. To ensure that LEDs along the sides of the display mix well with adjacent ones, a micro-lens array boosts light along the edges. This creates uniform color and brightness across the entire screen.

With a massive amount of processing power, the timing controller (TCON) chip utilizes an algorithm specifically created to analyze and reproduce images. It controls LEDs at over 10 times the refresh rate of the LCD itself, reducing latency and blooming. It’s capable of multiple refresh rates for amazingly smooth playback. Managing both the LED array and LCD pixels, the TCON precisely directs light and color to bring your work to life with stunning accuracy.

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First of all, don’t be afraid of the word “custom” in front of LCD display. The idea of getting exactly what you need is very exciting, but your enthusiasm could be quickly deflated by all of the misconceptions of this process and not being able to meet your budget or schedule. At Phoenix Display International, we don’t want this to happen to you. In fact, our mission is to never let our customers go line-down. In other words, we want your display to be the one thing you don’t have to worry about.

To be clear, we may be a little different than others. We are a build to order company. Meaning that we only build a product when our customers’ order it. We do this because there are so many variations of each display possible, and the waste associated with high inventory and excess inventory add to the cost of every single display. So, we skip that. The down side is that we are not for everybody and we are unable to support the smaller projects. The upside is that we are building specifically for each customer, so each configuration is customizable and at the lowest possible true cost.

Again, we may be a little different. We actually ship our products into the US via ocean instead of air. It takes more planning, but the result is roughly a 3% reduction in freight costs which are passed on to our customers. This change in ship methods add 4 weeks to our overall lead-time but can easily be expedited when needed by shipping traditional air at any time.

Mass production manufacturing lead times are typically 8 weeks. The long lead-time component is typically the LCD glass at 6 weeks with 2 weeks available to manufacture the components into the complete LCD module. So, 8 weeks manufacturing with 4 weeks shipping, gives the standard and most economical 12-week lead time. With a simple expedited shipping this can easily be sped up to 8 weeks.

So with shipping accounted for, we’ll usually estimate eight to 12 weeks for your production LCD displays in total. An eight-week time frame if we’ll be shipping your display via air, and more of a 12-week time frame if it’ll be going by ocean.

For a new product there are two paths, standard or custom. Often for a standard product, meaning the configuration already exists in this exact format that you need, the lead-time is 0-2 weeks. Either there are samples available, or the components are available, and they just need to be manufactured into your sample.

For a custom display, the process is a bit longer. I’ve seen this done in as quick as 2 weeks, and on long side it can become dependent on the customer’s design iteration process and I’ve seen this take years. But the typical experience for a full custom display is 2 weeks for the design and iteration process, and 4-5 weeks for tooling and assembly, resulting in 6-7 weeks for the first samples.

As all Phoenix Display products are customized to the needs of each customer, so can the delivery. There are options of accelerating the supply chain and manufacturing to shorten this schedule when possible, as well as carrying stock of some of the longer lead-time components to shorten this lead-time as well. All, done on a case by case basis.

As mentioned before, we aim to never let our customers go line-down, so we regularly do whatever we can to expedite our processes and meet your timeframe.

We stay focused on keepingmid-volume customers, so we have more agility and availability to work quickly on your behalf and give you more of our attention.

We canaccelerate the design and iterations processes. If you work with us to provide timely feedback, we’re happy to do our part to be quick with turnarounds.

It’s very typical for us tokeep components with long lead times on hand. As long as there won’t be a change in it from the design process, we can keep many standard connectors, ICs and other components in stock, which saves you a lot of time.

Alternately, we canorder components or full displays based on forecasts, which allows our customers to order releases and get them the next day. One example of this would be TFT glass panels, which sometimes have as much as a 26-week lead time. By keeping an inventory of these, we greatly expedite the whole manufacturing process.

Occasionally, we need to work even more quickly for a customer. In these scenarios, we’ll sometimes go with an approach that’s a bit controversial. Let’s say a customer needs to test five parts in five weeks, but then two weeks later needs 200 parts. Since typical production lead times are eight weeks (for manufacturing), that just doesn’t work.

If it’s a project like this, and we’ve fully assessed the risks, we can go in and build all the necessary parts at once. Or, we’ll build it up to a point. But we have to be very careful with this approach. When we do this, we don’t have time to make a prototype, and skipping this is risky in and of itself. But if it’s a simple, low-cost display, it can be worth it to just go for the build. If it doesn’t work, we can scrap them and lose the $1K-$2K it cost to make them, but if it does work, we’ve shaved off a ton of time. It’s a gamble, for sure, but one we take when necessary.

So, there you have it. If you’re interested in a custom or standard LCD displays, we hope you’ll consider Phoenix Display International. We’ll turn around the highest quality product to you, and we’ll make sure we meet your timing and never leave you line down.

A widescreen, full HD (1920x1080), 14" HDMI display that"s great for DIY builds like arcade cabinets or pinball tables, or just as a big desktop display.

This kit comes with the display itself, driver board with ribbon cable, and a keypad with cable to control the display. Just supply your own 12V/1A barrel jack (5.5 / 2.5mm, centre-positive) power supply, and an HDMI cable, and you"re good to go!

A high-resolution 8", IPS, 1024x768, HDMI display, with Pimoroni-made display driver board and keypad, that"s perfect for building into projects like arcade cabinets, or just use it as a handy display for your Raspberry Pi!

This new 8" display is a step up from our previous one, with a higher-resolution 1024x768 IPS screen, and a display driver board and keypad designed and made by Pimoroni. It"s the same, good old 4:3 aspect ratio, making it ideal for retro gaming builds.

There"s even a little keypad (and cable) included to control the display and navigate the menu options, and we"ve broken those pins out on the board too, so you can use your own buttons if you like.

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Equipped with IPS Screen with HD 1024*600 high resolution, 16:9 display format conversion in the image and an expansive 178 degree viewing angles is ideal for work and for reviewing on-screen data.

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The LCD Display Upgrade provides additional information while riding, including Speedometer, Odometer, Trip Odometer, Average Speed, Max Speed, and Pedal Assist (PAS) levels 1-4. This replaces the stock LED display on the RadRunner, RadMission, and RadExpand.