Showing posts with label LCD. Show all posts
Showing posts with label LCD. Show all posts

Monday, July 13, 2009

LG LCD TV Monitor

I bought this 22" LG LCD TV monitor M228WA for 2 purposes - connecting PC and watching TV. It has a resolution of 1680 x 1050, brightness 300 cd/sq m and contrast ratio 1000:1. There is also D-Sub (VGA) and DVI connections to a PC. For TV, you can connect via antenna, RCA, S-Video or component cable. It costs $399 with 3 years on-site warranty.

Since my PC has dual display inputs - VGA/HDMI or VGA/DVI, I can connect to 2 monitors, one via VGA and the other via DVI using this monitor. I tested connecting via HDMI to another LCD TV and it is blurred unlike VGA or DVI.

Saturday, March 8, 2008

Widescreen LCD Monitor on Eee PC

I tested a Philips 220EW8FB LCD monitor on my Eee PC. It is 21.6" with response time 5ms, resolution 1680 x 1050, contrast ratio 1000:1 and brightness 300cd/sq m. Also, it is HDCP ready and accepts dual input VGA & DVI. The resolutions supported by Eee PC are as follows:
  1. 800 x 600
  2. 1024 x 768
  3. 1152 x 864
  4. 1280 x 720
  5. 1280 x 960
  6. 1280 x 1024
  7. 1400 x 1050
  8. 1440 x 900
  9. 1600 x 900

Tuesday, March 4, 2008

Checking Defective Pixels on LCD Screen

There are three types of pixel defects:
  1. Type 1 - a stuck bright white pixel which is constantly illuminated (Hot pixels - always on)
  2. Type 2 - a fixed black spot which is not illuminated in any way (Dead pixels - always off)
  3. Type 3 - a pixel which shows up as a fixed single colour (not black or white) (Stuck pixels - one or more sub-pixels are always on or always off)
To check dead pixel, you can download Dead Pixel Buddy or UD Pix. UD Pix also allows you to rejuvenate Type 1 and 3 faults by flashing colours across them rapidly. Both programs run on Windows OS only.
How do you check the LCD screens for Linux/Mac laptops? If these laptops have a built-in or external optical drive, you can still boot up from Ultimate Boot CD and run CHZ Monitor Test 1.01 to check.

Friday, October 12, 2007

LCD Monitor or LCD TV

Requirements for HD
  • Minimum resolution of 1280 x 720.
LCD Monitor
  1. 19" - 1440 x 900
  2. 20-22" - 1680 x 1050
  3. 24-28" - 1920 x 1200
LCD TV
  1. HD-ready - 1366 x 768
  2. Full HD - 1920 x 1080
  • Minimum contrast ratio 800:1
  • Minimum brightness 450 cd/m
  • HDMI inputs - one for HD set-top box, one for DVD recorder with HDMI output and another for cable or your game station / HDMI switch
You can watch HD on LCD monitor with HDMI input or you can do HDMI via a DVI port which supports HDCP. HDMI cable carries both uncompressed HD video and digital surround sound audio but for DVI, it is good for HDTV but requires a separate cable for audio. It is best to compare the cost before buying.