Display panel and method of manufacturing the same, and display apparatus

Patent metadata

Field	Value
Publication number	US-10311277-B2
Application number	US-201715552164-A
Country	US
Kind code	B2
Filing date	Feb 13, 2017
Priority date	Jun 30, 2016
Publication date	Jun 4, 2019
Grant date	Jun 4, 2019

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.

First claim

What is claimed is:

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.

2. 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.

3. 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.

4. 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.

5. 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.

6. 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.

7. 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.

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

9. 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.

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

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.

12. 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.

13. 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.

14. 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.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Liu Yingming
• Dong Xue
• Lv Jing
• Wang Haisheng
• Chen Xiaochuan
• Wu chun wei
• Ding Xiaoliang
• Yang Shengji
• Xu Rui
• Li Changfeng
• Zhao Lijun
• Guo Yuzhen
• Jia Yanan

Classifications

• G06V40/1318

  using electro-optical elements or layers, e.g. electroluminescent sensing · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F3/0443

  using a single layer of sensing electrodes · CPC title

• G06F3/042

  by opto-electronic means · CPC title

• G06F3/044 Primary

  by capacitive means · CPC title