display devices

Question 1

_____ uses the liquid crystal technology to display visual information

Answer 1

LCD

Question 2

_______ uses white LEDs along one edge (usually the top) of the LCD and a light diffuser to backlight the screen

Answer 2

• Edge-Lit White LED

Question 3

________ uses an array of white LEDs behind the screen

Answer 3

• Full-array WLED

Question 4

this type of LED uses an array of special LEDs that are able to emit red, green, and blue light, resulting in superior color accuracy.

Answer 4

• RGB-LED

Question 5

__________ is least expensive and widely used

Answer 5

Edge-Lit White LED

Question 6

Older LCD monitors, and some LCD HDTVs uses

Answer 6

cold cathode fluorescent lamps (CCFLs)

Question 7

______ panels are the fastest and cheapest among the other main types of display panels

Answer 7

twisted nematic (TN)

Question 8

TN panels have a response time of ____ refresh rates of ______

Answer 8

1 - 5ms

60 - 144 Hz

Question 9

_______ panels has the best color reproduction quality and viewing angles

Answer 9

in plan switching panels (IPS)

Question 10

IPS panels have a response time of ____ refresh rates of ___

Answer 10

5 - 16 ms

60 Hz

Question 11

______ display device uses millions of small cells that contain electrically charged ionized gases

Answer 11

plasma

Question 12

______ display devices uses a thin layer of an organic compound that lights up in response to an electrical current.

Answer 12

OLED

Question 13

the number of pixels on a display screen is called

Answer 13

resolution

width x height

Question 14

________ specifies both the number of physical pixels on the screen and the display’s maximum resolution

Answer 14

native resolution

Question 15

the proportion between the width and height of a resolution is called

Answer 15

aspect ratio

Question 16

older flat-panel and CRT displays use this aspect ration

Answer 16

4:3

1600 × 1200 (UXGA)

Question 17

widescreen HDTVs and computer displays use this aspect ration

Answer 17

16:9

1920 x 1080 (FHD)
3840 x 2160 (4K UHD`)

Question 18

a widescreen aspect ratio used exclusively by computer display devices

Answer 18

16:10

1680 × 1050 (WSXGA+)
1920 × 1200 (WUXGA)

Question 19

The _______specifies the optimal viewing area of the display device.

Answer 19

viewing angle

Question 20

the viewing angel is expressed in

Answer 20

degrees

Question 21

_______ measures how long it takes for a single pixel to turn on and off (go from black, to white, and back to black).

Answer 21

response time 
expressed in (ms)

Question 22

the frequency with which the image on a screen is refreshed is called the

Answer 22

refresh rate 
expressed in (Hz)

Question 23

A desirable refresh rate is

Answer 23

60 Hz or higher

Question 24

• Fast-moving graphics require a refresh rate of

Answer 24

120 Hz or higher

Question 25

a measurement of the amount of visible light a projector is able to display on a screen is called

Answer 25

ANSI lumens

Question 26

brightness is measured in

Answer 26

candelas per square meter (cd/m2)

Question 27

the difference in light intensity between the brightest white and the darkest black is called

Answer 27

contrast ratio

Question 28

the difference that can be displayed at the same time is called

Answer 28

static contrast

Question 29

________ automatically detecting the input visual signal and the picture to create optimum contrast

Answer 29

dynamic contrast

Question 30

the number of different colors that can be displayed on the screen at a time is called

Answer 30

color depth

Question 31

a 16 bit color depth is called ___ and has ___ colors

Answer 31

high color

65,536

Question 32

a 24 bit color depth is called ___ and has ___ colors

Answer 32

true color

16.7 million

Question 33

a 32 bit color depth is called ___ and has ___ colors

Answer 33

true color with alpha channel

16.7 million