Light-emitting device including substrate having cavity, and method for fabricating the light-emitting device
First Claim
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1. A light-emitting device comprising:
- a first substrate;
a second substrate over the first substrate, the second substrate being smaller than the first substrate so that the first substrate has a region which does not overlap with the second substrate; and
a light-emitting portion between the first substrate and the second substrate,wherein;
the second substrate has a cavity;
the first substrate and the second substrate are bonded to each other so that the cavity is interposed between the first substrate and the second substrate;
the light-emitting portion is located in the cavity; and
the light-emitting portion comprises a light-emitting element.
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Abstract
An EL display device capable of performing clear multi-gradation color display and electronic equipment provided with the EL display device are provided, wherein gradation display is performed according to a time-division driving method in which the luminescence and non-luminescence of an EL element (109) disposed in a pixel (104) are controlled by time, and the influence by the characteristic variability of a current controlling TFT (108) is prevented. When this method is used, a data signal side driving circuit (102) and a gate signal side driving circuit (103) are formed with TFTs that use a silicon film having a peculiar crystal structure and exhibit an extremely high operation speed.
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Citations
20 Claims
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1. A light-emitting device comprising:
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a first substrate; a second substrate over the first substrate, the second substrate being smaller than the first substrate so that the first substrate has a region which does not overlap with the second substrate; and a light-emitting portion between the first substrate and the second substrate, wherein; the second substrate has a cavity; the first substrate and the second substrate are bonded to each other so that the cavity is interposed between the first substrate and the second substrate; the light-emitting portion is located in the cavity; and the light-emitting portion comprises a light-emitting element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A light-emitting device comprising:
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a first substrate; a second substrate over the first substrate, the second substrate being smaller than the first substrate so that the first substrate has a region which does not overlap with the second substrate; and a light-emitting portion between the first substrate and the second substrate, wherein; the second substrate has a cavity and a rim which surrounds the cavity; the first substrate and the rim are bonded to each other with an adhesive so that the cavity is interposed between the first substrate and the second substrate; the light-emitting portion is located in the cavity; the light-emitting portion comprises a light-emitting element; and the rim has a surface which is in contact with the adhesive and parallel to a top surface of the first substrate. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method for fabricating a light-emitting device, the method comprising:
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forming a light-emitting portion over a first substrate, the light-emitting portion including a light-emitting element; and bonding a second substrate having a cavity to the first substrate so that the light-emitting portion is sealed with a drying agent in the cavity between the first substrate and the second substrate, wherein the second substrate is smaller than the first substrate so that the bonding provides a region to the first substrate, and wherein the region is not covered by the second substrate. - View Dependent Claims (18, 19, 20)
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Specification