IP Library › Granted Patent US 7,964,879

Granted Patent B2

US 7,964,879 · App. 12/019,222 · Granted Jun 21, 2011

Display device mounted with read function and electric appliance

Assignee: Semiconductor Energy Laboratory Co., Ltd.

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Quick Facts

Patent No.: US 7,964,879
App. No.: 12/019,222
Granted: Jun 21, 2011
Kind: B2

External Links

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Abstract

According to the present invention, a material having a light-shielding property is used for a bank layer surrounding the edge of a light-emitting element. Accordingly, light which is not reflected by an object to be read out can be prevented from entering an image pick-up element, and information on the object to be read out can be correctly read out. The display device mounted with a read function according to the present invention includes a thin film transistor and an image pick-up element over a substrate having an insulating surface, an insulating layer covering a thin film transistor and an image pick-up element, a light-emitting element provided over the insulating layer, and a bank layer having a light-shielding property surrounding the edge of the light-emitting element. The bank layer has an opening portion in a position overlapping with the image pick-up element.

Claims (127)

1. A display device comprising:

a substrate having an insulating surface;

a plurality of pixels, wherein each of the plurality of pixels comprising:

a first transistor over the substrate;

a second transistor over the substrate;

an image pick-up element over the substrate, electrically connected to the second transistor; and

a light emitting element electrically connected to the first transistor;

an insulating layer; and

a light-shielding layer over the insulating layer,

wherein the insulating layer is formed under the light emitting element, and formed over the first transistor, the second transistor and the image pick-up element, and

wherein the light-shielding layer having openings over the light emitting element and over the image pick-up element.

2. A display device comprising:

a substrate having an insulating surface;

a plurality of pixels, wherein each of the plurality of pixels comprising:

a first transistor over the substrate;

a second transistor over the substrate;

an image pick-up element over the substrate, electrically connected to the second transistor;

a light emitting element electrically connected to the first transistor;

a coloring layer over the light emitting element;

an insulating layer; and

a light-shielding layer over the insulating layer,

wherein the insulating layer is formed under the light emitting element, and formed over the first transistor, the second transistor and the image pick-up element, and

wherein the light-shielding layer having openings over the light emitting element and over the image pick-up element.

3. A display device comprising:

a substrate having an insulating surface;

a plurality of pixels, wherein each of the plurality of pixels comprising:

a first transistor over the substrate;

a second transistor over the substrate;

a third transistor over the substrate;

a fourth transistor over the substrate;

a image pick-up element over the substrate, electrically connected to the fourth transistor;

a first light emitting element electrically connected to the first transistor;

a second light emitting element electrically connected to the second transistor;

a third light emitting element electrically connected to the third transistor;

a insulating layer; and

a light-shielding layer over the insulating layer;

wherein the insulating layer is formed under the first light emitting element, the second light emitting element and the third light emitting element, and formed over the first transistor, the second transistor, the third transistor, the fourth transistor and the image pick-up element, and

wherein the light-shielding layer having openings over the first light emitting element, over the second light emitting element, over the third light emitting element and over the image pick-up element.

4. A display device comprising:

a substrate having an insulating surface;

a plurality of pixels, wherein each of the plurality of pixels comprising:

a first transistor over the substrate;

a second transistor over the substrate;

a third transistor over the substrate;

a fourth transistor over the substrate;

a image pick-up element over the substrate, electrically connected to the fourth transistor;

a first light emitting element electrically connected to the first transistor;

a second light emitting element electrically connected to the second transistor;

a third light emitting element electrically connected to the third transistor;

a first coloring layer over the first light emitting element;

a second coloring layer over the second light emitting element; and

a third coloring layer over the third light emitting element,

a insulating layer; and

a light-shielding layer over the insulating layer;

5. A display device comprising:

a substrate having an insulating surface;

a plurality of pixels, wherein each of the plurality of pixels comprising:

a first transistor over the substrate;

a second transistor over the substrate;

a third transistor over the substrate;

a fourth transistor over the substrate;

a fifth transistor over the substrate;

a sixth transistor over the substrate;

a first image pick-up element over the substrate, electrically connected to the fourth transistor;

a second image pick-up element over the substrate, electrically connected to the fifth transistor;

a third image pick-up element over the substrate, electrically connected to the sixth transistor;

a first light emitting element electrically connected to the first transistor;

a second light emitting element electrically connected to the second transistor;

a third light emitting element electrically connected to the third transistor;

a insulating layer; and

a light-shielding layer over the insulating layer;

wherein the light-shielding layer having openings over the first light emitting element, over the second light emitting element, over the third light emitting element, over the first image pick-up element, over the second image pick-up element and over the third image pick-up element.

6. A display device comprising: