Method for darkening pixel
First Claim
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1. A method for darkening a pixel by darkening a defective pixel on a display for controlling the application of a voltage to a corresponding pixel electrode by a thin film transistor disposed for each pixel, wherein:
- a pixel electrode is formed on an insulating layer which is provided on an electrode of the thin film transistor, and the electrode of the thin film transistor and the pixel electrode are connected via a contact formed through the insulating layer; and
a part of the pixel electrode is cut by a laser in the vicinity of the contact connecting an electrode of the thin film transistor to the pixel electrode to separate the contact from the pixel electrode and to thereby darken the corresponding pixel wherein the thin film transistor is not destroyed.
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Abstract
Peripheries of a contact 26 for connecting a polycrystalline silicon layer 20 to a pixel electrode 28 are cut by a laser to form a cut area 50. By this cut area 50, the polycrystalline silicon layer 20 around the contact 26 is also cut. In consequence, a TFT 24 is separated from the pixel electrode 28 and a supplemental capacitor electrode 32 to reliably accomplish darkening.
50 Citations
8 Claims
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1. A method for darkening a pixel by darkening a defective pixel on a display for controlling the application of a voltage to a corresponding pixel electrode by a thin film transistor disposed for each pixel, wherein:
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a pixel electrode is formed on an insulating layer which is provided on an electrode of the thin film transistor, and the electrode of the thin film transistor and the pixel electrode are connected via a contact formed through the insulating layer; and
a part of the pixel electrode is cut by a laser in the vicinity of the contact connecting an electrode of the thin film transistor to the pixel electrode to separate the contact from the pixel electrode and to thereby darken the corresponding pixel wherein the thin film transistor is not destroyed. - View Dependent Claims (2, 3, 4)
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5. A display device for controlling, by the thin film transistor disposed for each pixel, the application of a voltage to a corresponding pixel electrode, wherein:
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a pixel electrode is formed on an insulating layer which is provided on an electrode of the thin film transistor, and the electrode of the thin film transistor and the pixel electrode are connected via a contact formed through the insulating layer; and
a part of the pixel electrode is cut by a laser in the vicinity of the contact connecting an electrode of the thin film transistor to the pixel electrode to separate the contact from the pixel electrode and to thereby darken the corresponding pixel wherein the thin film transistor is not destroyed. - View Dependent Claims (6, 7, 8)
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Specification