# US 10,311,277 B2 · Display panel and method of manufacturing the same, and display apparatus

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- Number: US 10,311,277 B2
- Document ID: US10311277B2
- Status: Granted
- Kind: B2
- Application number: 15/552,164
- Filed: 2017-02-13
- Published: 2018-08-30
- Granted: 2019-06-04
- Earliest claimed: 2016-06-30
- Assignees: Boe Technology Group Co., Ltd.
- Applicants: Boe Technology Group Co., Ltd.
- Inventors: Yingming Liu; Xue Dong; Jing Lv; Haisheng Wang; Xiaochuan Chen; Chun Wei Wu; Xiaoliang Ding; Shengji Yang; Rui Xu; Changfeng Li; Lijun Zhao; Yuzhen Guo; Yanan Jia
- Web page: https://patentgrep.com/patent/US10311277B2

## CPC

- G06F 3/0412: {Digitisers structurally integrated in a display}
- G06F 3/042: by opto-electronic means
- G06V 40/1318: {using electro-optical elements or layers, e.g. electroluminescent sensing}
- G06V 40/1359: {Extracting features related to ridge properties; Determining the fingerprint type, e.g. whorl or loop}
- H10K 59/40: OLEDs integrated with touch screens
- H10K 59/65: OLEDs integrated with inorganic image sensors
- G06F 3/044: by capacitive means
- G06F 3/0443: {using a single layer of sensing electrodes}
- H10F 39/198: {Contact-type image sensors [CIS]}
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10F: INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION

## Abstract

The present disclosure relates to a display panel and a method of manufacturing the same, as well as a display apparatus. The display panel comprises an array substrate, a packaging substrate jointed to the array substrate, a photosensitive device, and a touch sensitive device; the photosensitive device and the touch sensitive device are formed between the packaging substrate and the array substrate, and the touch sensitive device is positioned between the photosensitive device and the packaging substrate.

## Claims

### Claim 1

A display panel, comprising: an array substrate, a packaging substrate disposed above the array substrate, a photosensitive device, and a touch sensitive device;
wherein the photosensitive device and the touch sensitive device are formed between the packaging substrate and the array substrate, and the touch sensitive device is positioned between the photosensitive device and the packaging substrate;
wherein a display area of the array substrate includes a light transmission region and a light non-transmission region,
the photosensitive device includes a plurality of photosensitive modules arranged in an array, scanning lines each corresponding to and electrically connected to one row of the photosensitive modules, and read lines each corresponding to and electrically connected to one column of the photosensitive modules, the plurality of photosensitive modules being divided into n photosensitive module groups, where n is equal to or greater than one, an orthographic projection of each photosensitive module on the array substrate is located within the light non-transmission region of the array substrate,
the touch sensitive device includes n touch sensitive electrodes, each of which is superposed on and electrically connected to one of the photosensitive module groups, and
each of the photosensitive modules is configured to output a current signal through a corresponding one of the read lines under a scanning signal output by a corresponding one of the scanning lines.

### Claim 2 (depends on 1)

A display panel according to claim 1, wherein the touch sensitive device is configured to determine information about a position where a user's finger touches the display panel, and
the photosensitive device is configured to receive a light signal reflected by a fingerprint pattern of the user's finger, and to generate the current signal for identifying the fingerprint pattern on the basis of the light signal.

### Claim 3 (depends on 1)

A display panel according to claim 1, wherein each of the photosensitive modules includes a photosensitive sub-module electrically connected to a corresponding one of touch sensitive electrodes, and a switch sub-module electrically connected to the scanning line, the read line and the photosensitive sub-module respectively.

### Claim 4 (depends on 3)

A display panel according to claim 3, wherein the photosensitive sub-module includes a first electrode and a photosensitive material layer formed between the touch sensitive electrode and the first electrode, the photosensitive material layer being in contact with the touch sensitive electrode and the first electrode; and
wherein the switch sub-module is a thin film transistor, a gate of the thin film transistor being connected to the scanning line, one of a source electrode and a drain electrode of the thin film transistor being electrically connected to the read line, the other one of the source electrode and the drain electrode of the thin film transistor being electrically connected to the first electrode of the photosensitive sub-module.

### Claim 5 (depends on 2)

A display panel according to claim 2, wherein the photosensitive device is further configured to determine information about a position where the user's finger touches the display panel.

### Claim 6 (depends on 1)

A display panel according to claim 1, wherein the display panel further includes a flexible circuit board respectively electrically connected to the scanning lines and the read lines.

### Claim 7 (depends on 1)

A display panel according to claim 1, wherein the display panel further includes an integrated circuit respectively electrically connected to the scanning lines and the read lines.

### Claim 8 (depends on 1)

A display panel according to claim 1, wherein the touch sensitive electrode is made of a transparent conductive material.

### Claim 9 (depends on 3)

A display panel according to claim 3, wherein the first electrode is a reflecting electrode configured to reflect light reflected by the fingerprint pattern, and the display panel further includes a circular polarizer provided on a side of the packaging substrate facing away from the photosensitive device and the touch sensitive device.

### Claim 10 (depends on 1)

A display apparatus, comprising the display panel of claim 1.

### Claim 11

A method of manufacturing a display panel comprising an array substrate and a packaging substrate, the method comprising:
forming a photosensitive device and a touch sensitive device on a preset packaging surface, which is a surface of the packaging substrate or an light-exiting surface of the array substrate, such that the touch sensitive device is positioned between the photosensitive device and the packaging substrate; and
arranging the packaging substrate above the array substrate so that the photosensitive device and the touch sensitive device are both positioned between the packaging substrate and the array substrate;
wherein a display area of the array substrate includes a light transmission region and a light non-transmission region, the photosensitive device includes a plurality of photosensitive modules arranged in an array, scanning lines each corresponding to and electrically connected to one row of the photosensitive modules, and read lines each corresponding to and electrically connected to one column of the photosensitive modules, the plurality of photosensitive modules are divided into n photosensitive module groups, where n is equal to or greater than 1, the touch sensitive device includes n touch sensitive electrodes.

### Claim 12 (depends on 11)

The method according to claim 11, wherein the step of forming a photosensitive device and a touch sensitive device on the preset packaging surface includes:
forming the n touch sensitive electrodes on the surface of the packaging substrate;
forming the plurality of photosensitive modules in a target area of the surface of the packaging substrate formed with the n touch sensitive electrodes, such that each of the photosensitive modules is superposed on and electrically connected to one of the touch sensitive electrodes, the target area being an orthographic projection area of the light non-transmission region of the array substrate on the packaging substrate; and
forming scanning lines each corresponding to and electrically connected to one row of the photosensitive modules, and read lines each corresponding to and electrically connected to one column of the photosensitive modules, on the surface of the packaging substrate formed with the plurality of photosensitive modules.

### Claim 13 (depends on 11)

The method according to claim 11, wherein the step of forming a photosensitive device and a touch sensitive device on the preset packaging surface includes:
forming the plurality of photosensitive modules within the light non-transmission region of the light-exiting surface of the array substrate;
forming scanning lines each corresponding to and electrically connected to one row of the photosensitive modules, and read lines each corresponding to and electrically connected to one column of the photosensitive modules, on the light-exiting surface of the packaging substrate formed with the plurality of photosensitive modules; and
forming the n touch sensitive electrodes on the light-exiting surface of the packaging substrate formed with the scanning lines and the read lines, such that each of the photosensitive module is superposed on and electrically connected to one of the touch sensitive electrodes.

### Claim 14 (depends on 12)

The method according to claim 12, wherein each of the photosensitive modules includes a photosensitive sub-module and a switch sub-module, and forming the photosensitive module, includes:
forming the photosensitive sub-module on the preset packaging surface; and
forming the switch sub-module on the preset packaging surface formed with the photosensitive module.

### Claim 15 (depends on 14)

The method according to claim 14, wherein the photosensitive sub-module includes a first electrode and a photosensitive material layer, the switch sub-module is a thin film transistor having a gate electrically connected to the scanning line, and the preset packaging surface is a surface of the packaging substrate,
wherein forming a photosensitive sub-module on the preset packaging surface includes:
forming the photosensitive material layer and the first electrode sequentially on the surface of the packaging substrate formed with the touch sensitive electrode; and
wherein the touch sensitive electrode and the first electrode both contact the photosensitive material layer, one of a source electrode and a drain electrode of the thin film transistor is electrically connected to the read line, and the other of the source electrode and the drain electrode of the thin film transistor is electrically connected to the first electrode of the photosensitive sub-module.

### Claim 16 (depends on 14)

The method according to claim 14, wherein the photosensitive sub-module includes a first electrode and a photosensitive material layer, and the switch sub-module is a thin film transistor having a gate connected to the scanning line, and the preset packaging surface is the light-exiting surface of the packaging substrate,
wherein forming the photosensitive sub-module on the preset packaging surface includes:
forming the photosensitive material layer and the first electrode sequentially on the light-exiting surface of the packaging substrate; and
wherein the touch sensitive electrode and the first electrode both contact the photosensitive material layer, one of a source electrode and a drain electrode of the thin film transistor is connected to the read line, and the other of the source electrode and the drain electrode of the thin film transistor is connected to the first electrode of the photosensitive sub-module.

### Claim 17 (depends on 12)

The method according to claim 12, wherein after forming the photosensitive device and the touch sensitive device on the preset packaging surface, the method further comprises:
forming a flexible circuit board, which is respectively electrically connected with the scanning lines and the read lines, on the preset packaging surface formed with the photosensitive device and the touch sensitive device.

### Claim 18 (depends on 12)

The method according to claim 12, wherein after forming a photosensitive device and a touch sensitive device on the preset packaging surface, the method further comprises:
forming an integrated circuit, which is respectively electrically connected to the scanning lines and the read lines, on the preset packaging surface formed with the photosensitive device and the touch sensitive device.

### Claim 19 (depends on 15)

The method according to claim 15, wherein forming the first electrode includes forming a reflecting electrode by a reflective material, and
the method further comprises providing a circular polarizer on a side of the packaging substrate facing away from the photosensitive device and the touch sensitive device.