Image-sensing display device and image processing method

Patent metadata

Field	Value
Publication number	US-10497756-B1
Application number	US-201916502050-A
Country	US
Kind code	B1
Filing date	Jul 3, 2019
Priority date	Aug 10, 2018
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

An image-sensing display device and an image processing method are provided. The image-sensing display device includes a substrate, banks, and sensor units. The banks and the sensor units are located on the substrate. Each of the sensor units includes first to fourth light-emitting devices and a photo sensor. The first to fourth light-emitting devices are located around a corresponding bank. The first to third light-emitting devices include a red light-emitting device, a green light-emitting device, and a blue light-emitting device. The first and fourth light-emitting devices are light-emitting devices of a same color. The photo sensor is located on the corresponding bank. The photo sensor includes a first electrode, a second electrode, and a sensing layer located between the first electrode and the second electrode. The first electrode and the second electrode respectively extend from the sensing layer along a first direction and a second direction.

First claim

What is claimed is:

1. An image-sensing display device comprising:
a substrate;
a plurality of banks located on the substrate; and
a plurality of sensor units located on the substrate, each of the sensor units comprising:
a first light-emitting device, a second light-emitting device, a third light-emitting device, and a fourth light-emitting device located around a corresponding bank, wherein the first light-emitting device, the second light-emitting device, and the third light-emitting device comprise a red light-emitting device, a green light-emitting device, and a blue light-emitting device, and the first light-emitting device and the fourth light-emitting device are light-emitting devices of a same color; and
a photo sensor located on the corresponding bank, the photo sensor comprising: a first electrode, a second electrode, and a sensing layer located between the first electrode and the second electrode, wherein the first electrode and the second electrode respectively extend from the sensing layer along a first direction and a second direction, and the first direction is different from the second direction.

2. The image-sensing display device according to claim 1 , further comprising a first reflection layer located on the corresponding bank, wherein the first reflection layer is separated from the first electrode and the second electrode.

3. The image-sensing display device according to claim 2 , wherein the first light-emitting device is connected to a first connection structure and a second connection structure, and the first reflection layer and the first connection structure belong to a same patterned conductive layer.

4. The image-sensing display device according to claim 3 , wherein the first light-emitting device is a vertical light-emitting device, and the first connection structure and the second connection structure are respectively connected to a lower side and an upper side of the first light-emitting device.

5. The image-sensing display device according to claim 4 , wherein the first connection structure is a metal, and the second connection structure is a transparent conductive material.

6. The image-sensing display device according to claim 2 , further comprising a second reflection layer located on another bank adjacent to the corresponding bank, wherein, compared to the second reflection layer, the first reflection layer is closer to the photo sensor, and a height of the first reflection layer is smaller than a height of the second reflection layer.

7. The image-sensing display device according to claim 1 , wherein each of the sensor units further comprises an active device located below the corresponding bank.

8. The image-sensing display device according to claim 1 , further comprising a pixel control device located between two adjacent sensor units.

9. The image-sensing display device according to claim 1 , wherein two adjacent sensor units respectively correspond to two adjacent banks, and the two adjacent banks are separated from each other.

10. An image processing method comprising:
providing an image-sensing display device, the image-sensing display device comprising:
a substrate;
a plurality of banks located on the substrate; and
a plurality of sensor units located on the substrate, each of the sensor units comprising:
a first light-emitting device, a second light-emitting device, a third light-emitting device, and a fourth light-emitting device located around a corresponding bank, wherein the first light-emitting device, the second light-emitting device, and the third light-emitting device comprise a red light-emitting device, a green light-emitting device, and a blue light-emitting device, and the first light-emitting device and the fourth light-emitting device are light-emitting devices of a same color; and
a photo sensor located on the corresponding bank, the photo sensor comprising: a first electrode, a second electrode, and a sensing layer located between the first electrode and the second electrode, wherein the first electrode and the second electrode respectively extend from the sensing layer along a first direction and a second direction, and the first direction is different from the second direction;

scanning a sensed object, a method of scanning the sensed object comprising:
receiving, by the photo sensor, light of the first light-emitting device reflected by the sensed object;
receiving, by the photo sensor, light of the second light-emitting device reflected by the sensed object;
receiving, by the photo sensor, light of the third light-emitting device reflected by the sensed object; and
receiving, by the photo sensor, light of the fourth light-emitting device reflected by the sensed object;

computing a plurality of signals generated by the photo sensor; and
displaying an image generated after the signals are computed.

11. The method according to claim 10 , wherein the method of scanning the sensed object further comprises:
receiving, by the photo sensor, light of the first light-emitting device reflected by the sensed object and generating a first signal;
storing the first signal;
receiving, by the photo sensor, light of the second light-emitting device reflected by the sensed object and generating a second signal;
storing the second signal;
receiving, by the photo sensor, light of the third light-emitting device reflected by the sensed object and generating a third signal;
storing the third signal;
receiving, by the photo sensor, light of the fourth light-emitting device reflected by the sensed object and generating a fourth signal;
storing the fourth signal;
computing the first signal, the second signal, the third signal, and the fourth signal; and
displaying an image generated after the first signal, the second signal, the third signal, and the fourth signal are computed.

12. The method according to claim 10 , wherein the first light-emitting device and the fourth light-emitting device are turned on at a same time.

13. The method according to claim 10 , wherein when the sensed object is scanned, the first light-emitting device, the second light-emitting device, the third light-emitting device, and the fourth light-emitting device are respectively driven at a frequency f 1 ,
when the image generated after the signals are computed is displayed, at least a part of the first light-emitting device, the second light-emitting device, the third light-emitting device, and the fourth light-emitting device is driven at a frequency f 2 , and
the frequency f 1 is greater than the frequency f 2 .

Assignees

• Au Optronics Corp

Inventors

• Chen Shin-Shueh
• Liu Pin-Miao

Classifications

• H10W90/00

  Package configurations · CPC title

• G06F3/041

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title

• G06F3/042

  by opto-electronic means · CPC title

• H01L27/323

  Electricity · mapped topic

• H01L25/167

  Electricity · mapped topic