EL display device, driving method thereof, and electronic equipment provided with the EL display device
First Claim
1. An EL display device comprising:
- a pixel portion formed over a substrate;
plural pixels formed in the pixel portion;
a switching TFT and a current-control TFT formed in one of the plural pixels;
a first insulating film formed over the switching TFT and the current-control TFT;
a pixel electrode electrically connected to the current-control TFT;
a second insulating film formed over the first insulating film, wherein the second insulating film overlaps an edge of the pixel electrode;
an EL layer formed over the pixel electrode, wherein the EL layer extends over at least an edge of the second insulating film;
a transparent conductive film formed over the EL layer; and
a passivation film formed over the transparent conductive film.
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Accused Products
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.
67 Citations
21 Claims
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1. An EL display device comprising:
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a pixel portion formed over a substrate; plural pixels formed in the pixel portion; a switching TFT and a current-control TFT formed in one of the plural pixels; a first insulating film formed over the switching TFT and the current-control TFT; a pixel electrode electrically connected to the current-control TFT; a second insulating film formed over the first insulating film, wherein the second insulating film overlaps an edge of the pixel electrode; an EL layer formed over the pixel electrode, wherein the EL layer extends over at least an edge of the second insulating film; a transparent conductive film formed over the EL layer; and a passivation film formed over the transparent conductive film. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 20)
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10. An EL display device comprising:
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a pixel portion formed over a substrate; plural pixels formed in the pixel portion; a switching TFT and a current-control TFT formed in one of the plural pixels; a first passivation film formed over the switching TFT and the current-control TFT; a first insulating film formed over the first passivation film; a pixel electrode electrically connected to the current-control TFT; a second insulating film formed over the first insulating film, wherein the second insulating film overlaps an edge of the pixel electrode; an EL layer formed over the pixel electrode, wherein the EL layer extends over at least an edge of the second insulating film; a transparent conductive film formed over the EL layer; and a second passivation film formed over the transparent conductive film. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 21)
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Specification