Display Technologies Flashcards
Display Technologies
Composed of individual picture elements (pixels)
Monitor
Display Technologies
This is the total of pixels across and down
The Resolution
Display Technologies
These monitors use liquid crystals to allow light to pass or not pass for each color in a pixle.
Liquid Crystal Display (LCD)
Display Technologies
These are fluorescent or LED lights and shine through the liquid crystals
LCD backlights
Display Technologies
This type of monitor does not use a backlight as the pixels make their own light
Organic LED
OLED
Display Technologies
Uses a grid of tiny mirrors that shine through a color wheel to create an image
Digital Light Processing (DLP)
Display Technologies
LCD panel has a preset
Resolution
Display Technologies
This distributes the light emanating from the CCFG or LED backlights
Back panel (backlight unit)
Display Technologies
Convert DC power back into AC power for fluorescent lights
Inverters
Display Technologies
These types of monitor’s do not need inverters
LEDs
Display Technologies
The majority of GPUs are made by
Nvidia
AMD (ATI)
Intel
Display Technologies
To help resolve the screen all graphics cards have
RAM
Display Technologies
Many CPUs come with built-in
GPUs
Display Technologies
Uses analog signal
Chevy Vega
VGA
Display Technologies
Uses a digital signal
DVI
Display Technologies
These use 16-lane PCL3 slots and one or two PCLe power connectors
Graphics cards
Display Technologies
If you have multiple graphics cards in your system
Define the primary one to boot from in system setup
Display Technologies
Some systems provide these for extra graphics cards
Risers
Display Technologies
Systems should be run at your monitor’s
Native Resolution
Display Technologies
Projectors have resolutions and aspect ratios just like
monitors
Display Technologies
Projectors have either of two technologies
DLP
–or–
LCD
Display Technologies
The brightness of a projector is defined by
Lumens
Display Technologies
Throw comes in three forms
Pincushion
Keystone
Skew
Display Technologies
Video card overheats and shuts down
Replace fan
make sure it has enough airflow
Display Technologies
If you have Dead Pixels on LCD monitors
If persistent get a new one. Manufacturers allow for small numbers of them but you don’t have to.
Display Technologies
Artifacts
Video Ram - replace
snap in new ram card t and test it. (no testing video ram - soldered in)
Display Technologies
Incorrect color patterns
Check cable especially if VGA
snap in new ram card t and test it. (no testing video ram - soldered in)
Display Technologies
DIM image
Not enough light
Replace
Display Technologies
Flickering image
Replace cables - notorious for this especially HDMI cables
Display Technologies
Distorted Image
Run at native resolution
adjust geometry of projector a little bit
Display Technologies
Burn in
Old school plasma monitors
LCD - image persistance - fix it by putting a different screen on it
Display Technologies - Symptom
Oversized images and Icons
Windows tools will help to adjust
Display Technologies
Many monitor troubleshooting problems covered in
CompTIA exam
Display Technologies
The situations detailed above are covered on
The exam
Display Technologies - Quiz
Monitor backlight technology
LED
Display Technologies - Quiz
LCD’s don’t make own light
they use backlights
Display Technologies - Quiz
OLED make on light
thus do not need backlight
Display Technologies - Quiz
Unit used to measure monitor brightness
Nit
Display Technologies - Quiz
Uses tiny, moving mirrors to create projected images
DLP
Display Technologies - Quiz
Backlight technology
CCFL
Display Technologies - Quiz
Subpixel colors
RED
GREEN
BLUE
Display Technologies - Quiz
Contains liquid crystal that changes opacity
LCD
Display Technologies - Quiz
Includes CPU and GPU on same chip
APU
Display Technologies - Quiz
VGA and DVI are
Video Connectors
Display Technologies - Quiz
Can refer to either the core graphics processor or a standalone video card.
Graphics Processing Unit (GPU)
Display Technologies - Quiz
Can support one or more monitors.
DVI-I
Display Technologies - Quiz
DVI connectors can support multiple monitors
Dual-link
Display Technologies - Quiz
Support for both analog and digital signals
DVI
Display Technologies - Quiz
Dual-link cards can support
higher resolution
Display Technologies - Quiz
Supports DRM
HDMI
Display Technologies - Quiz
This power is not adjustable
PCLe
Display Technologies - Quiz
Standard projector adjustments
Keystone
Skew
Pincushion
Display Technologies - Quiz
May be caused by loose or failing connectors and should be reset
Incorrect color pattern
Display Technologies - Quiz
These monitor problems are not fixable
Dead pixels and burn-in
Display Technologies - Quiz
Low brightness settings, failing CCFL or failing inverters may cause
Dim images
Display Technologies - Quiz
A failed inverter will make a monitor
DIM
Display Technologies - Quiz
May cause overheating
High video workload
