Electrical Engineering Stack Exchange is a question and answer site for electronics and electrical engineering professionals, students, and enthusiasts. It's 100% free.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I'm looking at a datasheet for an LCD panel (pdf link to datasheet).

I don't understand these two encircled dimensions:

LCD dimensions

What does the acronym "V.A." mean for these dimensions?

I have referenced a couple of other questions here on EE, but they don't cover this:
Abstract Datasheet Dimension Notation
Reading dimension in datasheet

share|improve this question
    
Many times those initials are "lefovers" from Chinese-English (or whichever languages) translation & don't make any sense in english. HOWEVER those letters are in place of the error factor for their respective measurements, and could (conveniently) be initials for "Verified Absolute." – Robherc KV5ROB Feb 1 at 6:34
up vote 6 down vote accepted

After looking into the linked LCD datasheet and answers here, I looked into other display products of the same company NEWHEAVENDISPLAY. And the interesting thing I found is apart from V.A. they use another therm called as A.A. Below is an example. Adding the datasheet link as well, if someone more interested can look into.

V.A. can be Viewing Area or Viewing Angle(if mentioned in degrees)

A.A. is Active Area also called as effective area which the area for active pixels or icons or segments or patterns.

These links say all the same link1, link2 and link3. image

Just hope ambiguity stops here.

share|improve this answer

This is not a standard dimensioning abbreviation according to any standard I'm familiar with.

Instead, I suggest the (in 20:20 hindsight, obvious) meaning that the dimensions given refer to the nominal size of the LCD Viewing Area.

share|improve this answer

It looks a bit bigger than the 128*64 dots region. Inspired by @Spehro's answer I'm suggesting Viewing Aperture.

I'm only playing with words. :^) It's the size of the hole you have to cut.

share|improve this answer

From past experience with similar displays I would go with "Very Approximate".

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.