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HP Flat Panel Monitors - Changing the Screen Resolution

Types of screen resolution

The liquid crystal display (LCD) panel used in flat panel monitors have a fixed, predefined pixel format over a set area. For example, if the LCD panel has a predefined area of 1,024 x 768, there are exactly 1,024 pixels in each horizontal line and 768 pixels in each vertical line or 786,432 total pixels.

There are three types of screen resolution configurations on LCD monitors:

  • Native resolution or optimal resolution occurs when the screen resolution in Windows is the same as the predefined area of the LCD panel. Native resolution is typically the maximum monitor resolution, and HP recommends using LCD monitors at the native resolution.

  • Fixed matrix display uses the number of pixels required for a certain resolution exclusively and typically results in a border or framing effect, but the image size remains unchanged. The fixed matrix display method prevents users from taking full advantage of the monitor screen size.

    Figure 1: Fixed matrix display

    Example of a fixed matrix display with a black border surrounding the image on the screen
  • Scaling uses an expansion technique known as an interpolated algorithm to widen the resolution to fit the entire viewable area of the screen. Scaling requires the manipulation of pixels adjacent to the text to give individual letters a smoother look. The image remains equivalently sized, but the image might appear blurry due to the dithering and loss of data, color, or information. Scaling is the most common method to make full use of the entire screen when operating in a resolution lower than the native resolution.

Typical native resolutions

The following table lists typical native resolutions for different size monitors:

Monitor size
Typical native resolution
15-inch LCD monitors
1024x768 @ 60 hertz
17, 18, 19-inch LCD monitors
1280x1024 @ 60 hertz
20-inch LCD monitors or larger
1600x1280 @ 60 hertz

Refer to the documentation that came with the monitor for more information.

Changing the screen resolution

Perform the following to change the screen resolution:
  1. Click Start , and then click Control Panel.

  2. Find the Appearance and Personalization area, and click Adjust Screen Resolution.

  3. In the Resolution menu, change the resolution to match the native resolution.

  4. Click OK, and then close Control Panel.

Changing font size

Perform the following to change the font size or DPI settings:

Windows 7

  1. Click Start , and then click Control Panel.

  2. Click Appearance and Personalization.

  3. Click Display.

  4. Select the text size, click Apply, and then restart the computer.

    Figure 2: Display window

    Setting the text size in Windows 7

Windows Vista

  1. Click Start , and then click Control Panel.

  2. Click Appearance and Personalization.

  3. Click Personalization.

  4. In the Tasks pane on the left side, click Adjust font size (DPI). The DPI Scaling windows opens.

    Figure 3: Personalization window

    Personalization window
  5. Select the DPI, click Apply, click OK, and then restart the computer.

    Figure 4: DPI Scaling window

    Setting the default DPI in Windows Vista

Windows XP

  1. Click Start, and then click Control Panel.

  2. Double-click Display.

  3. Click the Settings tab.

    Figure 5: Display Properties window

    Settings tab in Windows XP

  4. In the Screen resolution field, select the resolution, click Apply, click OK, and then restart the computer.

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