ClearType is Microsoft's implementation of subpixel rendering technology in rendering text in a font system.
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21 Facts About ClearType
1.
3.
ClearType was significantly changed with the introduction of DirectWrite in Windows 7.
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4.
ClearType uses spatial anti-aliasing at the subpixel level to reduce visible artifacts on such displays when text is rendered, making the text appear "smoother" and less jagged.
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5.
ClearType uses very heavy font hinting to force the font to fit into the pixel grid.
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6.
For example, ClearType enhancement renders text on the screen in Microsoft Word, but text placed in a bitmapped image in a program such as Adobe Photoshop is not.
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7.
ClearType was invented in the Microsoft e-Books team by Bert Keely and Greg Hitchcock.
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8.
ClearType uses this method to improve the smoothness of text.
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9.
Text rendered with ClearType looks “smoother” than text rendered without it, provided that the pixel layout of the display screen exactly matches what ClearType expects.
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10.
ClearType yielded higher readability judgments and lower ratings of mental fatigue.
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11.
Gugerty's group showed, in a sentence comprehension study, that ClearType boosted reading speed by 5 percent and comprehension by 2 percent.
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12.
ClearType and allied technologies require display hardware with fixed pixels and subpixels.
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13.
ClearType needs to be manually tuned for use with such displays.
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14.
ClearType utilizes the physical layout of the red, green and blue pigments of the LCD screen, it is sensitive to the orientation of the display.
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15.
ClearType is an integrated component of the Windows Presentation Foundation text-rendering engine.
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16.
ClearType can be globally enabled or disabled for GDI applications.
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17.
Some versions of Microsoft Windows, as supplied, allow ClearType to be turned on or off, with no adjustment; other versions allow tuning of the ClearType parameters.
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18.
The original colored ClearType subpixel rendering was tuned to work optimally with horizontal orientation LCD displays where RGB or BGR stripes run vertically.
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19.
Many Office 2013 apps including Word 2013, Excel 2013, parts of Outlook 2013 stopped using ClearType and switched to this DirectWrite greyscale antialiasing.
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20.
ClearType is a registered trademark and Microsoft claims protection under the following US patents, all expired:.
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21.
ClearType name was used to refer to the screens of Microsoft Surface tablets.
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