US-12620258-B2 - Display device, display module, and electronic device

US12620258B2US 12620258 B2US12620258 B2US 12620258B2US-12620258-B2

Abstract

A display device having both a touch detection function and a function of capturing an image of a shape of a fingerprint or a vein is provided. The display device includes a first substrate, a first light-emitting element, a second light-emitting element, a light-receiving element, a light-blocking layer, a first resin layer, and a second resin layer. The first light-emitting element and the light-receiving element are arranged over the first substrate, and the first resin layer is provided over the first light-emitting element and the light-receiving element. The light-blocking layer is provided over the first resin layer, and the second light-emitting element is provided over the light-blocking layer. The second resin layer is provided over the second light-emitting layer. The first light-emitting element emits visible light upward, and the second light-emitting element emits invisible light upward. The light-receiving element is a photoelectric conversion element having sensitivity to visible light and invisible light. In a plan view, the light-blocking layer includes a portion positioned between the first light-emitting element and the light-receiving element, and the second light-emitting element overlaps with the light-blocking layer and is positioned inside the outline of the light-blocking layer.

Inventors

Shunpei Yamazaki
Shingo Eguchi
Daisuke Kubota
Koji KUSUNOKI
Kazunori Watanabe

Assignees

SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Dates

Publication Date: 20260505
Application Date: 20241009
Priority Date: 20200911

Claims (14)

1 . A display device comprising: a first substrate; a plurality of first light-emitting elements; a plurality of second light-emitting elements; a plurality of light-receiving elements; a light-blocking layer; a first resin layer; and a second resin layer, wherein the plurality of first light-emitting elements and the plurality of light-receiving elements are over the first substrate, wherein the first resin layer is over the plurality of first light-emitting elements and the plurality of light-receiving elements, wherein the light-blocking layer is over the first resin layer, wherein the plurality of second light-emitting elements is over the light-blocking layer, wherein the second resin layer is over the plurality of second light-emitting elements, wherein each of the plurality of first light-emitting elements is configured to emit visible light toward the second resin layer, wherein each of the plurality of second light-emitting elements is configured to emit invisible light toward the second resin layer, wherein each of the plurality of light-receiving elements is a photoelectric conversion element having sensitivity to the visible light and the invisible light, wherein in a plan view, the light-blocking layer comprises a portion between one of the plurality of first light-emitting elements and one of the plurality of light-receiving elements and a portion between another of the plurality of first light-emitting elements and another of the plurality of light-receiving elements, wherein in a cross-sectional view, each of the plurality of second light-emitting elements overlaps with the light-blocking layer, and wherein two adjacent second light-emitting elements of the plurality of second light-emitting elements are electrically connected with each other by a conductive layer.
2 . The display device according to claim 1 , wherein one of the two adjacent second light-emitting elements comprises a first island-shaped electrode, wherein the other of the two adjacent second light-emitting elements comprises a second island-shaped electrode, and wherein the first island-shaped electrode and the second island-shaped electrode are electrically connected with each other by the conductive layer.
3 . The display device according to claim 1 , wherein the invisible light is light having intensity in a wavelength range of greater than or equal to 750 nm and less than or equal to 900 nm.
4 . The display device according to claim 1 , wherein the one of the plurality of first light-emitting elements comprises a first pixel electrode, a first light-emitting layer, and a first electrode, wherein the one of the plurality of light-receiving elements comprises a second pixel electrode, an active layer, and the first electrode, wherein the first light-emitting layer and the active layer contain different organic compounds from each other, wherein the first electrode comprises a portion overlapping with the first pixel electrode with the first light-emitting layer therebetween and a portion overlapping with the second pixel electrode with the active layer therebetween, and wherein the first pixel electrode and the second pixel electrode contain the same conductive material.
5 . A display module comprising: the display device according to claim 1 ; and a connector or an integrated circuit.
6 . An electronic device comprising: the display module according to claim 5 ; and at least one of an antenna, a battery, a housing, a camera, a speaker, a microphone, a touch sensor, and an operation button.
7 . The electronic device according to claim 6 , wherein the electronic device is configured to receive first reflective light by the one of the plurality of light-receiving elements when the visible light is emitted by the one of the plurality of first light-emitting elements, and wherein the electronic device is configured to receive second reflective light by the one of the plurality of light-receiving elements when the invisible light is emitted by the one of the plurality of second light-emitting elements.
8 . A display device comprising: a first substrate; a plurality of first light-emitting elements; a plurality of second light-emitting elements; a plurality of light-receiving elements; a light-blocking layer; a first resin layer; and a second resin layer, wherein the plurality of first light-emitting elements and the plurality of light-receiving elements are over the first substrate, wherein the first resin layer is over the plurality of first light-emitting elements and the plurality of light-receiving elements, wherein the light-blocking layer is over the first resin layer, wherein the plurality of second light-emitting elements is over the light-blocking layer, wherein the second resin layer is over the plurality of second light-emitting elements, wherein each of the plurality of first light-emitting elements is configured to emit visible light toward the second resin layer, wherein each of the plurality of second light-emitting elements is configured to emit invisible light toward the second resin layer, wherein each of the plurality of light-receiving elements is a photoelectric conversion element having sensitivity to the visible light and the invisible light, wherein in a plan view, the light-blocking layer comprises a portion between one of the plurality of first light-emitting elements and one of the plurality of light-receiving elements and a portion between another of the plurality of first light-emitting elements and another of the plurality of light-receiving elements, and wherein in a cross-sectional view, each of the plurality of second light-emitting elements overlaps with the light-blocking layer.
9 . The display device according to claim 8 , wherein one of the two adjacent second light-emitting elements comprises a first island-shaped electrode, wherein the other of the two adjacent second light-emitting elements comprises a second island-shaped electrode, and wherein the first island-shaped electrode and the second island-shaped electrode are electrically connected with each other.
10 . The display device according to claim 8 , wherein the invisible light is light having intensity in a wavelength range of greater than or equal to 750 nm and less than or equal to 900 nm.
11 . The display device according to claim 8 , wherein the one of the plurality of first light-emitting elements comprises a first pixel electrode, a first light-emitting layer, and a first electrode, wherein the one of the plurality of light-receiving elements comprises a second pixel electrode, an active layer, and the first electrode, wherein the first light-emitting layer and the active layer contain different organic compounds from each other, wherein the first electrode comprises a portion overlapping with the first pixel electrode with the first light-emitting layer therebetween and a portion overlapping with the second pixel electrode with the active layer therebetween, and wherein the first pixel electrode and the second pixel electrode contain the same conductive material.
12 . A display module comprising: the display device according to claim 8 ; and a connector or an integrated circuit.
13 . An electronic device comprising: the display module according to claim 12 ; and at least one of an antenna, a battery, a housing, a camera, a speaker, a microphone, a touch sensor, and an operation button.
14 . The electronic device according to claim 13 , wherein the electronic device is configured to receive first reflective light by the one of the plurality of light-receiving elements when the visible light is emitted by the one of the plurality of first light-emitting elements, and wherein the electronic device is configured to receive second reflective light by the one of the plurality of light-receiving elements when the invisible light is emitted by the one of the plurality of second light-emitting elements.

Description

TECHNICAL FIELD One embodiment of the present invention relates to a display device. One embodiment of the present invention relates to an image capturing device. One embodiment of the present invention relates to a touch panel. Note that one embodiment of the present invention is not limited to the above technical field. Examples of the technical field of one embodiment of the present invention disclosed in this specification and the like include a semiconductor device, a display device, a light-emitting device, a power storage device, a memory device, an electronic device, a lighting device, an input device, an input/output device, a driving method thereof, and a manufacturing method thereof. A semiconductor device generally means a device that can function by utilizing semiconductor characteristics. BACKGROUND ART In recent years, information terminal devices, for example, mobile phones such as smartphones, tablet information terminals, and laptop PCs (personal computers) have been widely used. Such information terminal devices often include personal information or the like, and thus various authentication technologies for preventing unauthorized use have been developed. For example, Patent Document 1 discloses an electronic device including a fingerprint sensor in a push button switch portion. REFERENCE Patent Document [Patent Document 1] United States Published Patent Application No. 2014/0056493 SUMMARY OF THE INVENTION Problems to be Solved by the Invention In the case where a function of authentication such as fingerprint authentication is added to an electronic device functioning as a portable information terminal device, the electronic device needs to include a module for capturing a fingerprint image. This increases the number of components and therefore increases the cost of the electronic device. An object of one embodiment of the present invention is to reduce the cost of an electronic device having an authentication function. Another object is to reduce the number of components of an electronic device. Another object is to provide a display device capable of capturing an image of a shape of a fingerprint or a vein. Another object is to provide a display device having both a touch detection function and a function of capturing an image of a shape of a fingerprint or a vein. Another object is to provide an electronic device with a high screen occupancy rate which has a function of biometric authentication. Another object is to provide a display device capable of emitting both visible light and infrared light. Another object is to provide an image capturing device capable of capturing an image using both visible light and infrared light as light sources. An object of one embodiment of the present invention is to provide a display device, an image capturing device, an electronic device, or the like that has a novel structure. An object of one embodiment of the present invention is to at least reduce at least one of problems of the conventional technique. Note that the description of these objects does not preclude the existence of other objects. One embodiment of the present invention does not have to achieve all of these objects. Objects other than these can be derived from the description of the specification, the drawings, the claims, and the like. Means for Solving the Problems One embodiment of the present invention is a display device including a first substrate, a first light-emitting element, a second light-emitting element, a light-receiving element, a light-blocking layer, a first resin layer, and a second resin layer. The first light-emitting element and the light-receiving element are arranged over the first substrate. The first resin layer is provided over the first light-emitting element and the light-receiving element. The light-blocking layer is provided over the first resin layer. The second light-emitting element is provided over the light-blocking layer. The second resin layer is provided over the second light-emitting element. The first light-emitting element has a function of emitting visible light upward. The second light-emitting element has a function of emitting invisible light upward. The light-receiving element is a photoelectric conversion element having sensitivity to the visible light and the invisible light. In a plan view, the light-blocking layer includes a portion positioned between the first light-emitting element and the light-receiving element. In the plan view, the second light-emitting element overlaps with the light-blocking layer and is positioned inside an outline of the light-blocking layer. In the above, it is preferable that the invisible light be light having intensity in a wavelength range of greater than or equal to 750 nm and less than or equal to 900 nm. In any of the above, a protective layer is preferably further included. In this case, it is preferable that the protective layer contain an inorganic insulating material and be positioned between