# US 10,503,947 B2 · Touch panel and display apparatus

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- Number: US 10,503,947 B2
- Document ID: US10503947B2
- Status: Granted
- Kind: B2
- Application number: 15/743,583
- Filed: 2017-07-07
- Published: 2019-05-23
- Granted: 2019-12-10
- Earliest claimed: 2016-09-30
- Assignees: Boe Technology Group Co., Ltd.
- Applicants: Boe Technology Group Co., Ltd.
- Inventors: Yingming Liu; Xue Dong; Jing Lv; Haisheng Wang; Chunwei Wu; Xiaoliang Ding; Rui Xu; Lijun Zhao; Changfeng Li; Yanan Jia; Yuzhen Guo; Yunke Qin; Pinchao Gu; Fanna Meng
- Web page: https://patentgrep.com/patent/US10503947B2

## CPC

- G06F 3/0412: {Digitisers structurally integrated in a display}
- G06F 3/0421: {by interrupting or reflecting a light beam, e.g. optical touch-screen}
- 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
- G06V 40/1341: {Sensing with light passing through the finger}
- H10K 59/12: Active-matrix OLED [AMOLED] displays
- 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

## Abstract

There is provided a touch panel comprising an array substrate and a fingerprint identification substrate. The array substrate comprises a first base and pixel units provided on the first base, each pixel unit comprises a thin film transistor and an organic light emitting diode, the fingerprint identification substrate comprises a second base and fingerprint identification devices provided on the second base, the fingerprint identification substrate is located at a side of the first base distal to the pixel units, the array substrate further comprises a light blocking layer and a via-hole, the via-hole is formed in the light blocking layer so that light emitted by the organic light emitting diode is reflected by a surface of a touch terminal, the surface of the touch terminal comprises ridges and valleys, light reflected by the ridges and the valleys passes through the via-hole to irradiate onto different fingerprint identification devices respectively.

## Claims

### Claim 1

A touch panel, comprising an array substrate and a fingerprint identification substrate, wherein the array substrate comprises a first base and a plurality of pixel units provided on the first base, each of the pixel units comprises a thin film transistor and an organic light emitting diode, the fingerprint identification substrate comprises a second base and a plurality of fingerprint identification devices provided on the second base, the fingerprint identification substrate is located at a side of the first base distal to the pixel units, the array substrate further comprises a light blocking layer and a via-hole provided between at least a portion of the pixel units adjacent to each other, the via-hole is formed in the light blocking layer so that light emitted by the organic light emitting diode is reflected by a surface of a touch terminal to irradiate onto more than one of the fingerprint identification devices, the surface of the touch terminal comprises ridges and valleys, light reflected by the ridges and the valleys of the surface of the touch terminal passes through the via-hole to irradiate onto different ones of the fingerprint identification devices respectively.

### Claim 2 (depends on 1)

The touch panel of claim 1, wherein a plurality of via-holes are provided in the light blocking layer, a pitch between any adjacent via-holes is equal to one to two times an image distance, and the image distance is a vertical distance from an end of each via-hole proximal to the fingerprint identification devices to a layer where the fingerprint identification devices are located.

### Claim 3 (depends on 1)

The touch panel of claim 1, wherein each of the fingerprint identification devices is provided with a micro lens thereon.

### Claim 4 (depends on 1)

The touch panel of claim 1, wherein each of the fingerprint identification devices is a photosensitive device.

### Claim 5 (depends on 1)

The touch panel of claim 1, wherein the light blocking layer comprises a material of metal or black resin.

### Claim 6 (depends on 1)

The touch panel of claim 1, wherein a gate of the thin film transistor is further formed in the light blocking layer.

### Claim 7 (depends on 1)

The touch panel of claim 1, wherein an aperture of the via-hole is within a range from 1 μm to 100 μm.

### Claim 8 (depends on 1)

The touch panel of claim 1, wherein the first base comprises a material of polyimide.

### Claim 9 (depends on 1)

The touch panel of claim 1, wherein the second base comprises a material of polyimide.

### Claim 10 (depends on 1)

The touch panel of claim 1, further comprising an opposite substrate located at a side of the first base provided with the pixel units.

### Claim 11 (depends on 1)

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