yellow lcd screen factory

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.

Today I received my 3rd iPhone 6 with yellow screen. When I received my 1st device I was sure that my screen is kinda yellow so I went to some local store to compare. All store"s devices were "whiter" (more blueish), crisper, more contrasty -just better. As said before, today I received 3rd phone with the same yelowish screen and I think I will sent it back with cash refund this time as I just don"t want to have worse phone that I saw in a store. It"s not acceptable. Moreover I had more or less similar issue with Macbook Pro delivered last week (half screen was yellow). Now I am waiting for the 2nd unit. Yellow screens for such money?

If you"ve dwelled/lurked on the forums for a reasonable amount of time or have kept up with news covering the OnePlus One, you should already be aware of the infamous "yellow tint/band/gradient/piss/screen/tinge" (how many terms have been coined for this phenomenon?). If not, basically, it"s an issue that has evidently plagued some* OnePlus Ones.

Some OnePlus Ones are affected to different extents, but most are unaffectedI"m in the third camp. Mine has shown the tiniest bit of tint since day one (bottom 1/10th of the screen, more visible when looking down from above), remained unchanged after a month of owning it, and to this day remains unchanged as of yesterday (17th December 2014).

When displaying a prominently white screen/image/webpage, there is a visible yellow "tint" (let"s just call it a tint for now) at the bottom of the screen that"s "yellow-er" than the rest of the screen, right above where the capacitive buttons are. It is also the edge where the backlight LEDs are situated. Now, its severity depends from case to case, and often it doesn"t really affect functionality,

The former aforementioned thread addresses an "overall yellowish hue", and details how OnePlus sources panels from JDI, different factories have different batches, different screen temperatures, other flagship phones also suffer from this yadayada...and the latter aforementioned thread lines up the One with other phones and is seemingly normal.

this issue doesn"t exist. People have RMA"ed their yellow tinted One (success? failure?), others who have purchased multiple Ones have the tint on all of them (at different extents), and some other stuff. I couldn"t keep track of it all.

Another thing to consider when seeing photos of the yellow band problem is that a lot of the photos were taken at extreme angles with Contrast and Levels changed for more visibility. We have been able to replicate some of the pictures posted here by playing with the Levels settings in Photoshop and ...

I just got my new dell XPS 13 9310 FHD+ and I noticed immediately that the screen has a yellow tint. I tried to change display settings using color management in windows 10 as well as intel graphics command center and dell CinemaColor but it doesn"t change much . I checked the night mode and it"s off so that"s not the reason.

I also own a dell XPS 15 9570 and the difference between the two is clearly visible. I ran the lcd built-in self test on both and the white color on the dell XPS 13 9310 is yellowish.

Due to LCD manufacturing processes it is possible for system screens to look different from one another even though the screen quality is comparable and meets Nintendo"s high standards. The image may appear slightly darker, or have a different tint when compared to another system.

Professional manufacturer: YXD company is a professional manufacturer integrating R & D, design and production of all kinds of general TN, HTN, STN, FSTN, TFT LCD module (LCM) and customized non-standard LCD module.