Understand the Technicals of LCD Repair before Going to LA iPhone Repair Service

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Introduction

The screen of the mobile phone is most susceptible to damage. Sometimes a small fall will do no damage to your screen or its functioning as the device settings are arranged with proper cushioning system. But the aftermath of a serious fall can be devastating to the iPhone and you will have no choice before you but to take it to LA iPhone Repair and Unlock center. Sometimes the top screen will have a crack on it or minor scratches but the display will be working just fine. In other cases the phone will simply have a black screen and no movement at all. And you consider yourself lucky enough if you get your phone back after a fall unscatched. But this would have slowed down the touch response of the iPhone in most cases. Before you take your iPhone to a LA iPhone repair executive, you should know how and when you have to get your LCD display replaced.

What is LCD?

LCD or Liquid Crystal Display is the thin flat display screen that consists of minute filters and electrodes. The background light is blocked by the LCD layer to display the image. The display grid on an LCD is either passive or active grid. The active grid LCD is also known as TFT display. The present day mobile phones use the active grid LCD variety. There are speculations that OLED technique will take over LCD display in the coming years.

The layer of LCD consist of liquid crystals which stand in the path of a light source and this produces images. Each color point has 3 pixels with red, green and blue color crystals. This RGB combination allows the screen to produce a multitude of colors.

Importance of LCD Display

In the first designs of mobile phones, the function of the screen was to display just the phone numbers. Then later the need for displaying messages and then mails was added to the display requirements. The display screens were unicolored at that time. Now the it is multicolored and then with the addition of cameras, there was the need for sharp screen pixels to display VGA photos.

The mobile phone displays have to be as efficient as the computer screen or the TV to display videos and photos in high quality. The user should also be able to use the phone even under bright sunlight.The requirements was huge and the devices small.

The TFT LCD display is the most used in mobile phone and there are several methods of its manufacture in all qualities. The phone with a high quality LCD display provides clear view from any angle while a low quality one does not. This differentiation can prove useful when you have to change your LCD at LA iPhone repair and unlock center.

Common Problems with LCD Display

The image produced by an LCD screen is as a result of activity of several million pixels when compared to a single beam in the CRT display technique. A small fault in any of these pixels can give you an error in the display output. Some of the most commonly faced LCD errors are:

• Stuck or Dead Pixel: One or more pixels might be damaged not broken and this is seen as a black area. Dead pixels will not respond to the background voltages. Small individual pixels usually show such errors. When a group of pixels show the error, this could mean that the LCD display controller is damaged or the grid area is defective.
• Residual Images: Similar to the classic burn in issue in CRT screens, LCD screens also have a problem of residual images which is technically known as “transient persistence”. This usually occurs when you have displayed some highly intense colors on the LCD. Even a few hours of such a display can led to this problem. The pixel actually stores a certain amount of residual charge and when voltage is applied, it does not give the desired luminance.
• Screen Flicker: The flickering of the screen can be caused by loose connection of the battery. If the issue is not sorted by checking the battery, then it might be some defect in the LCD screen and can only be rectified by a professional LA iPhone repair and unlock center.
• Broken Screen but Display Working: The digitizer protects and comes above the LCD screen. A breakage in the digitizer will not affect the display. But the whole LCD unit will have to be replaced as the two comes as fused parts. There are some technicians who might use some complicated technology to separate the two parts without damaging the LCD. In such cases the phone can be rectified by changing the digitizer alone.
• Black or white screen: This directly points at a destroyed LCD display and the unit will have to changed.

Causes of LCD Damage

• Water damage by falling into water to even slight water entry through sides.
• The LCD screen is a thin and fragile screen it can get destroyed by even a small knocking of the phone against a surface.
• There is a small connector between the display and the phone and any loose contact or even dry soldering can cause error in display.
• The screen itself might have faced some pixel damage which cannot be rectified by handy techniques.

Alternatives to LCD Display Errors

A stuck or dead pixel is sometimes a small error and can be easily rectified by applying slight pressure to the area. This can wake up the electric signals. There are also programs that swiftly switches off and on pixels on the screen that will revoke the dead ones. This is not a perfect solution and sometimes these two easy techniques may not work and you will have to resort LA iPhone repair and unlock center.

With residual imagery issue in LCD, the quick fix can be to use an empty Text Edit window or any such black window over the screen for a few days. This will leave the pixels activated and thus the low intensity pixels will gain the same intensity as the other pixels. There are also some other techniques like the Black Texture technique that is also used by LA iPhone repair to solve the issue of transient persistence.