yellow lcd screen manufacturer

Using the above-noted standard, any color and brightness can be defined within the three-dimensional space with an L* number (white/black), an a* number (red/green), and a b* number (yellow/blue). In this instance, our main concern is going to be the b* value, which in simple terms can be considered as to how “blue” or “yellow” a particular color may be. The higher the number, the more yellow. The lower (negative) the number, the bluer.

The above-mentioned optical properties are of course the basic requirements of LOCA adhesives. The next challenge is to be certain that these optical qualities will be retained and consistent over time under real-world operating conditions. It is in this regard that b* number becomes a useful tool. The b* number is especially important in its consistency over time as yellowing of screens is considered highly undesirable and indicative of aging or failure in the eyes of consumers.

Many environmental conditions have been shown in the past to lead to a yellowing of LOCA materials over time and a corresponding deterioration in image quality. By measuring the CIELAB coordinates of a given device after initial manufacture, it is then possible to expose the device to harsh conditions and measure any changes in CIELAB numbers.

Each of these tests and all of them combined is designed to simulate years of real-world aging in environments such as in automobiles and appliances. By showing consistency over time under these conditions of the b* value, manufacturers can be confident of resistance to yellowing for LCD displays. In addition, customized testing is not uncommon in cases where a product may be exposed to unique or especially harsh conditions.

Chase Corporation, Westwood, Ma., founded in 1946, is a leading manufacturer of industrial products for high-reliability applications with a global customer base operating in diverse market sectors. Our HumiSeal® group specializes in the manufacture of polymers for the protection of PCBs. In addition, the HumiSeal group produces the Vivid Cure line of LOCA adhesives for LCD display manufacture. Our outstanding manufacturing and technical support groups can provide your organization with a reliable global supply, unmatched quality, and superior technical support.

NHD-12864AZ-FL-YBW | Monochrome Graphic Module | 128x64 Pixels | Transflective LCD | Yellow/Green Backlight | STN (+) Positive Yellow/Green Display | Non-Stocked

Newhaven 128x64 graphic Liquid Crystal Display module shows dark pixels on a bright yellow/green background. This transflective LCD Display is visible with ambient light or a backlight while offering a wide operating temperature range from -20 to 70 degrees Celsius. This NHD-12864AZ-FL-YBW display has an optimal view of 6:00, operates at 5V supply voltage and is RoHS compliant.

Newhaven 24x2 character Liquid Crystal Display shows characters with dark pixels on a bright yellow/green background when powered on. This transflective LCD Display is visible with ambient light or a backlight while offering a wide operating temperature range from -20 to 70 degrees Celsius. This NHD-0224BZ-FL-YBW display has an optimal view of 6:00. This display operates at 5V supply voltage and is RoHS compliant.

This is an industry standard HD44780 based controlled 4 lines x 20 characters LCD display with WHITE characters on BLUE background and backlight. It is a parallel interface so you will need 7 GPIO pins for 4-bit mode or 11 GPIO pins for 8-bit mode to interface to this LCD screen

TV-manufacturer Sharp unveiled a new line of LCD TVs earlier this year that is different from anything currently on store shelves. The new Aquos LE models have Sharp"s QuadPixel technology included, which the company says will dramatically improve image production and become the standard for the industry.

Every color TV in homes around the world right now uses varying amounts of three colors – red, green and blue – to reproduce the billions of colors in any image. QuadPixel technology adds a yellow pixel, which Sharp says raises the number of reproducible colors into the trillions.

"A yellow sub-pixel enables more light to pass through the system, which requires less intensive backlighting," Sharp explained in a statement to TechNewsDaily. "The obvious advantage here is a more environmentally friendly overall TV system thanks to lower power consumption. One of Sharp’s core principle is prioritizing technologies that are less power consuming and therefore have a smaller overall carbon footprint."

But does QuadPixel technology significantly improve picture quality? Many consumers scrambled to buy high-definition screens because it was obvious to the naked eye how much clearer HD screens were. Sharp repeatedly emphasized during its Quadpixel unveiling the dramatic improvements to image quality that the new colors bring. Will consumers be able to tell the difference between a regular and a QuadPixel TV, or is this just another gimmick?

There is quite a bit of research about using more than red, green and blue (RGB) in display technology, but Sharp"s QuadPixel technology marks the first time multi-primary displays (using colors beyond simple RGB) have been put into a mass market TV. Using yellow is just one of several colors that can be used to improve color reproduction.

Yellow can help create a more luminous white than R, G, and B alone can, explained Phil Green, Reader in Colour Imaging at the London College of Communication.

Basically, this means an additional yellow pixel can make colors and even whites seem brighter, which in turn can improve contrast as well. All this combines to attract the attention of our eyes. In order to make a TV stand out, it needs to have more than just a trillion colors – those colors need to pop.

"Naturally there are other colors in addition to yellow that can be added to improve picture quality, and Sharp already publicly demonstrated that capability," the Sharp statement said. "The selection of yellow was the most appropriate given where the market and technology are today [in terms of] price and performance."

Even though QuadPixel technology might seem like an improvement over old RGB technology, there are a few nagging issues that call into question whether yellow pixels can really be a leap forward.

First of all, the use of RGB in video imaging has been around for decades and is a fairly well established process. Using RGB+Y, on the other hand, hasn"t been applied to commercial LCD production and needs to be handled very carefully in order to work.

"The yellow needs to be more saturated than any combination of red and green and this is difficult to achieve," said Mark Fairchild, at the Rochester Institute of Technology"s (RIT) Center for Imaging Science. "If that is not achieved, then the yellow is nothing but marketing."

Another potential problem is display resolution. A TV needs to pack 1080 pixels across the width of its screen in order to display an HD signal. Each pixel contains red, green and blue. Adding yellow means each pixel must be made larger and takes up more room. This could be why Sharp is only producing QuadPixel TVs in relatively large sizes, though there are many other considerations, such as manufacturing costs and consumer demand.

Adding an additional color also makes it harder to translate images designed for RGB display into an image that appears correctly on an RGB+Y display. The yellow in each pixel would make translation from an RGB signal to a QuadPixel display quite complicated. It can be done, Fairchild said, but "the transformation from RGB to RGB+Y [must be] done carefully. If it is not, then the color could be worse."

The real test, of course, is whether the human eye likes what it sees. At the CES 2010 show, Sharp had a QuadPixel display set up next to an RGB model, cycling through the same images simultaneously for comparison, and the difference was discernable to this reporter"s eye. Yellows definitely seemed to be more saturated.

The downside: Sometimes the overly saturated yellows almost made the image look cartoonish. Other colors, meanwhile, didn"t seem that much better nor even brighter.

Some of the other CES attendees who stopped by the Sharp booth were also underwhelmed. The majority of reactions were similar: Yeah, the yellows look yellower, but it"s not earth-shattering. So what?

My old iPhone screen got cracked, so I decided to get a cheap eBay replacement (or 2). The first one worked fine (apart from obvious display quality issues) but when the screen closed it seemed like the metal block on the back of the screen right below the camera was interfering with the display connector shield. This is proven when I remove the shield and close the phone, as the pressure marks are gone. So I got a different screen from another eBay supplier, again touted as OEM but obviously not, and it has the same issue. My question is if there is a way to shift the metal block so that it doesn’t interfere with the display shield and I don’t have to leave the display shield out, or if there is a supplier somewhere that actually ships genuine OEM 6s screens. Thanks!

If your motto is Never Settle, why should your customer have to settle with yellow displays and dead pixels? You are contradicting the very foundation that you say your brand is built upon.

JAZZ-A -Y Modules are one of our best selling graphic LCD module offerings. It is widely known in the LCD market because it is available in many varieties which gives it a lot of versatility to formulate any LCD mode and back-light color combination you can think of while having very competitive pricing. This Line also offers these combinations without having to modify your PCB or software design.