# US 12,120,898 B2 · Photosensitive device

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- Number: US 12,120,898 B2
- Document ID: US12120898B2
- Status: Granted
- Kind: B2
- Application number: 18/496,939
- Filed: 2023-10-30
- Published: 2024-02-22
- Granted: 2024-10-15
- Earliest claimed: 2020-11-10
- Assignees: AUO Corporation
- Applicants: AUO Corporation
- Inventors: Yi-Huan Liao; Chun Chang; Hsin-Hsuan Lee
- Web page: https://patentgrep.com/patent/US12120898B2

## CPC

- H10K 39/32: Organic image sensors
- H10K 30/87: Light-trapping means
- H10K 71/50: Forming devices by joining two substrates together, e.g. lamination techniques
- H10K 71/80: using temporary substrates
- G02B 3/0006: {Arrays (G02B3/02, G02B5/188 take precedence)}
- Y02E 10/549: Organic PV cells
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

A photosensitive device including a microlens substrate, a photosensitive element substrate, and an optical glue is provided. The microlens substrate includes a first substrate and microlenses. The first substrate has a first side and a second side opposite to the first side. The microlenses are located on the first side of the first substrate. The photosensitive element substrate includes a second substrate, active components, first electrodes, a second electrode, and an organic photosensitive material layer. The second substrate has a third side and a fourth side opposite to the third side. The second side of the first substrate faces the third side of the second substrate. The active components are located on the fourth side of the second substrate. The first electrodes are respectively electrically connected to the active components. The organic photosensitive material layer is located between the first electrodes and the second electrode.

## Claims

### Claim 1

A photosensitive device, comprising:
a microlens substrate, comprising:
a first substrate, comprising a first side and a second side opposite to the first side; and
a plurality of microlenses, located on the first side of the first substrate;
a photosensitive element substrate, comprising:
a second substrate, comprising a third side and a fourth side opposite to the third side, wherein the second side of the first substrate faces the fourth side of the second substrate;
a plurality of active components, located on the fourth side of the second substrate;
a plurality of first electrodes, respectively electrically connected to the active components, wherein each of the active components comprises:
a gate, located on the fourth side of the second substrate;
a semiconductor layer, overlapped with the gate, wherein a gate insulating layer is sandwiched between the semiconductor layer and the gate; and
a source and a drain, electrically connected to the semiconductor layer, and the drain being electrically connected to a corresponding first electrode of the first electrodes, wherein the first electrodes comprise a metal material, and each drain and the corresponding first electrode are formed integrally;
a second electrode, overlapped with the first electrodes; and
an organic photosensitive material layer, located between the first electrodes and the second electrode, wherein the first electrodes are closer to the fourth side of the second substrate compared with the second electrode; and
an optical glue, located between the microlens substrate and the photosensitive element substrate.

### Claim 2 (depends on 1)

The photosensitive device as claimed in claim 1, further comprising:
a buffer layer, covering the first electrodes, and comprising a plurality of openings, wherein the openings are respectively overlapped with the first electrodes; and
a plurality of third electrodes, respectively filled in the openings, and electrically connected to the first electrodes.

### Claim 3 (depends on 2)

The photosensitive device as claimed in claim 2, wherein the organic photosensitive material layer covers a top surface and a side surface of each of the third electrodes.

### Claim 4 (depends on 2)

The photosensitive device as claimed in claim 2, wherein the third electrodes comprise a transparent conductive material, and an area of each of the third electrodes is larger than an area of a corresponding opening of the openings.

### Claim 5 (depends on 4)

The photosensitive device as claimed in claim 4, wherein each of the third electrodes is overlapped with the corresponding source, the corresponding semiconductor layer, and the corresponding gate.

### Claim 6 (depends on 1)

The photosensitive device as claimed in claim 1, wherein the second electrode comprises a polymer nanoparticle material or a metal material.

### Claim 7 (depends on 1)

The photosensitive device as claimed in claim 1, wherein the organic photosensitive material layer comprises:
an active layer;
an electron transport layer, located between the active layer and the first electrodes; and
a hole transport layer, located between the active layer and the second electrode.

### Claim 8 (depends on 1)

The photosensitive device as claimed in claim 1, further comprising:
a transparent adhesive film, wherein an adhesive surface of the transparent adhesive film faces the fourth side of the second substrate, and the optical glue is located on a non-adhesive surface of the transparent adhesive film.

### Claim 9 (depends on 1)

The photosensitive device as claimed in claim 1, further comprising:
a common electrode, overlapped with the first electrodes, wherein the common electrode is closer to the second substrate compared with the first electrodes.

### Claim 10

A photosensitive device, comprising:
a microlens substrate, comprising:
a first substrate, comprising a first side and a second side opposite to the first side; and
a plurality of microlenses, located on the first side of the first substrate;
a photosensitive element substrate, comprising:
a second substrate, comprising a third side and a fourth side opposite to the third side, wherein the second side of the first substrate faces the fourth side of the second substrate;
a plurality of active components, located on the fourth side of the second substrate;
a plurality of first electrodes, respectively electrically connected to the active components;
a second electrode, overlapped with the first electrodes;
an organic photosensitive material layer, located between the first electrodes and the second electrode, wherein the first electrodes are closer to the fourth side of the second substrate compared with the second electrode;
a buffer layer, covering the first electrodes, and comprising a plurality of openings, wherein the openings are respectively overlapped with the first electrodes; and
a plurality of third electrodes, respectively filled in the openings, and electrically connected to the first electrodes; and
an optical glue, located between the microlens substrate and the photosensitive element substrate.

### Claim 11

A photosensitive device, comprising:
a microlens substrate, comprising:
a first substrate, comprising a first side and a second side opposite to the first side; and
a plurality of microlenses, located on the first side of the first substrate;
a photosensitive element substrate, comprising:
a second substrate, comprising a third side and a fourth side opposite to the third side, wherein the second side of the first substrate faces the fourth side of the second substrate;
a plurality of active components, located on the fourth side of the second substrate;
a plurality of first electrodes, respectively electrically connected to the active components;
a second electrode, overlapped with the first electrodes;
an organic photosensitive material layer, located between the first electrodes and the second electrode, wherein the first electrodes are closer to the fourth side of the second substrate compared with the second electrode; and
a common electrode, overlapped with the first electrodes, wherein the common electrode is closer to the second substrate compared with the first electrodes; and
an optical glue, located between the microlens substrate and the photosensitive element substrate.