Apparatus and method for testing pixels of flat panel display
First Claim
1. An apparatus for testing pixels of a flat panel display, comprising:
- an electron beam source for irradiating said flat panel display with an electron beam;
a secondary electron detector for detecting secondary electrons emitted from each of said pixels of said flat panel display irradiated with said electron beam;
a holding member for holding said flat panel display; and
a voltage source unit for applying a first predetermined voltage to either said holding member or an electrode of a storage capacitor contained in each pixel in a condition that a reference voltage of said pixel is applied to said electrode of said storage capacitor.
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Accused Products
Abstract
An apparatus for testing pixels of a flat panel display has a palette for holding a TFT substrate, drive signal source units, and predetermined voltage source units. The palette is grounded. One of the predetermined voltage source units applies a predetermined voltage to a Cs electrode of each of pixels constituting the TFT substrate so that the predetermined voltage is used as a reference voltage of the TFT substrate 11. The drive signal source units supply drive signals to a gate electrode G and a source electrode S respectively in each of the pixels constituting the TFT substrate. The voltages of the drive signals are floated by predetermined voltages given by the corresponding predetermined voltage source units respectively.
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Citations
9 Claims
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1. An apparatus for testing pixels of a flat panel display, comprising:
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an electron beam source for irradiating said flat panel display with an electron beam;
a secondary electron detector for detecting secondary electrons emitted from each of said pixels of said flat panel display irradiated with said electron beam;
a holding member for holding said flat panel display; and
a voltage source unit for applying a first predetermined voltage to either said holding member or an electrode of a storage capacitor contained in each pixel in a condition that a reference voltage of said pixel is applied to said electrode of said storage capacitor. - View Dependent Claims (2, 3, 4, 5)
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6. A method of testing pixels of a flat panel display, comprising:
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holding said flat panel display by a holding member;
applying a first predetermined voltage to either said holding member or an electrode of a storage capacitor contained in each of said pixels in a condition that a reference voltage of said pixel is applied to said electrode of said storage capacitor;
irradiating said flat panel display with an electron beam; and
detecting secondary electrons emitted from each of said pixels of said flat panel display irradiated with said electron beam. - View Dependent Claims (7, 8, 9)
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Specification