How does an LCD screen have such few connection points and still produce over 2 million pixels?

Question

How does an LCD screen have such few connection points and still produce over 2 million pixels?

In: Engineering

Answer 1

Do you mean the HDMI cable connection to the monitor/TV or the actual electronic connections of the LCD screen?

Basically, an LCD screen does not draw all 2 millions pixels at once but rather block per block. The time it takes for the whole screen to be redrawn is defined by the refresh rate. Most LCD displays use a technology called Active Matrix to handle the huge numbers of pixels in a cost effective way. Only a small group of pixels is addressed (connected) at one time and it can switch between different groups when it needs to do updates. An active matrix of size m*n pixels means that you only need m+n connectors to address those pixels.