Common LCD panel faults

I thought you would be interested in getting familiar with most of the common faults exhibited by LCD TVs and monitors, and how they are sometimes described. You have probably seen some of them before. I plan to illustrate  these faults by use of pictures.

 Common faults:

* Horizontal bar

* Vertical bar

* Vertical line(s)

* Horizontal line(s)

* White screen

* Grey/Black screen (No display)

* Rainbow display

* No backlight

* Terrible Motion Blurr, etc

However, there is an important question begging for answers. Knowing the answers can help a great deal in understanding why certain faults seem to be common. The question is: why are LCD panels so prone to faults? This is one question I promise to address sooner or later...

If you have been visiting this blog and are interested in the subjects covered, you may add your comments, or you can ask questions if you have any and I will try my best to respond as soon as I can. All the best!

What to expect

I thought that I should wet your appetite further by letting you know what i'll be writing on (ie what to expect to learn from this blog).

Apart from what I have already written on, which is like an introduction to the LCD technology, you can hope to learn about the following:

* Different terminologies used in field of Optoelectronics

* Why LCD panels seem to be more prone to developing faults

* The various problems/faults common to LCD displays, and how to correct them

* Common LCD panel models and the T-CONs they use
* Perfect picture settings

** Solder application substitute to electrically conductive adhesive in LCD panel rework.

You notice here that I have two asterisk on the last item listed, solder application substitute to electrically conductive adhesive. This should be be particularly interesting to you. I think so because as far as I know, repairing LCD panels demands that you have the conductive adhesive I mentioned. But these things can be very expensive. Aside from that, they are not yet widely available. So you think of a possible substitute...More on this Later.

Terminology

There are certain terms relating to the Liquid Crystal Display technology that must be explained in order for their problems to be understood (up to their root causes) and then repairs can be more readily carried out.

Terminology:

*Flex

*Electrically conductive adhesive (ECA)

*LCD panel/module

*LCD glass

*Polarizer

*PCB (Printed Circuit Board, or Board for short)

* Source PCB, Gate PCB

*Joint (flex-to-PCB joint and flex-to-glass joint)
*Pixel (row and column pixels)
*T-CON
* Flip-chip

     I am going to be explaining all the above-listed terms through a stretch of time. So please check back as soon as you can for additional updates.