Display device and electronic device
First Claim
1. A display device comprising:
- a substrate which transmits light;
a first display surface above a top surface of the substrate;
a second display surface below a bottom surface of the substrate;
a counter substrate opposite to the substrate;
two polarizers of different polarizations sandwiching the substrate and the counter substrate and between the first display surface and the second display surface; and
a transistor and a light-emitting element between the top surface of the substrate and the first display surface, the transistor being electrically connected to the light-emitting element,wherein the light-emitting element emits light to the first display surface and to the second display surface,wherein light emitted by the light-emitting element reaches the first display surface and the second display surface by passing through one polarizer only,wherein light obtained from the light-emitting element is white, andwherein each of the first display surface and the second display surface performs monochrome display.
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Accused Products
Abstract
A display device and an electronic device in which more sophistication and a high added value are realized by obtaining a read function by incorporating an imaging device, and by using a panel with small volume can be provided. A display device and an electronic device according to the invention has a first display surface and a plurality of pixels arranged in matrix over one surface of a light transmitting substrate and a second display surface over the other surface of the substrate. The plurality of pixels are each provided with a transistor, an imaging device, and a light-emitting element which emits light to the first display surface and the second display surface. The light-emitting element has two functions of serving as a light source when information of a subject is read and displaying an image. Thus, a display device according to the invention has two functions of an image sensor function to read information of a subject by using an imaging device and a display function to display an image by using the imaging device and the light-emitting element.
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Citations
41 Claims
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1. A display device comprising:
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a substrate which transmits light; a first display surface above a top surface of the substrate; a second display surface below a bottom surface of the substrate; a counter substrate opposite to the substrate; two polarizers of different polarizations sandwiching the substrate and the counter substrate and between the first display surface and the second display surface; and a transistor and a light-emitting element between the top surface of the substrate and the first display surface, the transistor being electrically connected to the light-emitting element, wherein the light-emitting element emits light to the first display surface and to the second display surface, wherein light emitted by the light-emitting element reaches the first display surface and the second display surface by passing through one polarizer only, wherein light obtained from the light-emitting element is white, and wherein each of the first display surface and the second display surface performs monochrome display. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A display device comprising:
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a substrate which transmits light; a first display surface above a top surface of the substrate; a second display surface below a bottom surface of the substrate; a counter substrate opposite to the substrate; two polarizers of different polarizations sandwiching the substrate and the counter substrate and between the first display surface and the second display surface; a transistor and a light-emitting element between the top surface of the substrate and the first display surface, the transistor being electrically connected to the light-emitting element; and a color filter below the bottom surface of the substrate, wherein the light-emitting element emits light to the first display surface and to the second display surface, wherein light emitted by the light-emitting element reaches the first display surface and the second display surface by passing through one polarizer only, wherein light obtained from the light-emitting element is white, and wherein the first display surface performs monochrome display and the second display surface performs color display. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A display device comprising:
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a substrate which transmits light; a first display surface above a top surface of the substrate; a second display surface below a bottom surface of the substrate; a counter substrate opposite to the substrate; two polarizers of different polarizations sandwiching the substrate and the counter substrate and between the first display surface and the second display surface; a transistor and a light-emitting element between the top surface of the substrate and the first display surface, the transistor being electrically connected to the light-emitting element; and a color filter above the top surface of the substrate and the light-emitting element, wherein the light-emitting element emits light to the first display surface and to the second display surface, wherein light emitted by the light-emitting element reaches the first display surface and the second display surface by passing through one polarizer only, wherein light obtained from the light-emitting element is white, and wherein the first display surface performs color display and the second display surface performs monochrome display. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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25. A display device comprising:
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a substrate which transmits light; a first display surface above a top surface of the substrate; a second display surface below a bottom surface of the substrate; a counter substrate opposite to the substrate; two polarizers of different polarizations sandwiching the substrate and the counter substrate and between the first display surface and the second display surface; a transistor and a light-emitting element between the top surface of the substrate and the first display surface, the transistor being electrically connected to the light-emitting element; a first color filter above the top surface of the substrate and the light-emitting element; and a second color filter below the bottom surface of the substrate, wherein the light-emitting element emits light to the first display surface and to the second display surface, wherein light emitted by the light-emitting element reaches the first display surface and the second display surface by passing through one polarizer only, wherein light obtained from the light-emitting element is white, and wherein the first display surface performs color display and the second display surface performs color display. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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33. A display device comprising:
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a substrate which transmits light; a first display surface above a top surface of the substrate; a second display surface below a bottom surface of the substrate; a counter substrate opposite to the substrate; two polarizers of different polarizations sandwiching the substrate and the counter substrate and between the first display surface and the second display surface; and a transistor and a light-emitting element between the top surface of the substrate and the first display surface, the transistor being electrically connected to the light-emitting element, wherein the light-emitting element emits light to the first display surface and to the second display surface, wherein light emitted by the light-emitting element reaches the first display surface and the second display surface by passing through one polarizer only, wherein light obtained from the light-emitting element is red, blue, or green, and wherein the first display surface performs color display and the second display surface performs color display. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40)
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41. A display device comprising:
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a substrate which transmits light; a first display surface above a top surface of the substrate; a second display surface below a bottom surface of the substrate; a counter substrate opposite to the substrate; two polarizers of different polarizations sandwiching the substrate and the counter substrate and between the first display surface and the second display surface; and a transistor and a light-emitting element between the top surface of the substrate and the first display surface, the transistor being electrically connected to the light-emitting element, wherein the light-emitting element emits light to the first display surface and to the second display surface, and wherein light emitted by the light-emitting element reaches the first display surface and the second display surface by passing through one polarizer only.
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Specification