Full-screen fingerprint recognizing touch display screen

Patent metadata

Field	Value
Publication number	US-10719680-B2
Application number	US-201715743245-A
Country	US
Kind code	B2
Filing date	Dec 28, 2017
Priority date	Nov 24, 2017
Publication date	Jul 21, 2020
Grant date	Jul 21, 2020

Abstract

The present disclosure provides a full-screen fingerprint recognizing touch display screen including switch units, pixel units, and metal mesh lines. Each pixel unit includes three sub-pixels. There is a corresponding gap between each two neighboring sub-pixels. The metal mesh lines are directly disposed corresponding to positions of gaps. The metal mesh lines are patterned into fingerprint sensing electrodes independent from each other. Each of the fingerprint sensing electrodes is connected to a corresponding one of the switch units.

First claim

What is claimed is:

1. A full-screen fingerprint recognizing touch display screen, comprising:
a flexible substrate;
a buffer layer on the flexible substrate;
a thin film transistor layer on the buffer layer;
an anode layer on the thin film transistor layer;
an organic light-emitting layer on the anode layer, and comprising pixel units, each pixel unit comprising three sub-pixels;
a cathode layer on the organic light-emitting layer;
a thin film package layer on the cathode layer; and
metal mesh lines disposed over the thin film package layer, wherein material of the metal mesh lines is one selected from a group consisting of titanium, aluminum, molybdenum, copper, gold, silver, and any alloy material thereof;
a protective cover disposed over the thin film package layer;
wherein the metal mesh lines are patterned into fingerprint sensing electrodes independent from each other, wherein each of the fingerprint sensing electrodes corresponds to a corresponding plurality of first sub-pixels of the pixel units in position; and wherein each of the fingerprint sensing electrodes comprises a corresponding metal mesh comprising a plurality of corresponding first metal mesh lines and a plurality of corresponding second metal mesh lines, wherein a corresponding one of the first metal mesh lines is directly disposed corresponding to a corresponding gap between each two neighboring rows of the first sub-pixels, and a corresponding one of the second metal mesh lines is directly disposed corresponding to a corresponding gap between each two neighboring columns of the first sub-pixels.

2. The full-screen fingerprint recognizing touch display screen of claim 1 , wherein the metal mesh lines are formed on a surface of the thin film package layer on a side away from the flexible substrate, and are distributed on an entire surface of the thin film package layer.

3. The full-screen fingerprint recognizing touch display screen of claim 1 , wherein the metal mesh lines are formed on an inner surface of the protective cover, and are distributed on an entire surface of the protective cover.

4. The full-screen fingerprint recognizing touch display screen of claim 3 , wherein the metal mesh lines are patterned into at least two fingerprint sensing electrodes, and a pitch between each two of the fingerprint sensing electrodes is same as a width of each of the gaps.

5. The full-screen fingerprint recognizing touch display screen of claim 4 , wherein a width of each of the metal mesh lines is smaller than or equal to the width of each of the gaps between the corresponding sub-pixels.

6. The full-screen fingerprint recognizing touch display screen of claim 5 ,
wherein each of the fingerprint sensing electrodes is connected to a corresponding switch unit; and
wherein during a fingerprint recognizing operation, the switch unit controls the corresponding fingerprint sensing electrode to conduct, sense fingerprint capacitance, and recognize; during a touch operation, at least two switch units are closed to form a touch sensing electrode to determine a touched position.

7. The full-screen fingerprint recognizing touch display screen of claim 6 , wherein the touch sensing electrode is connected to a touch sensing controller, and the fingerprint sensing electrode is connected to a fingerprint sensing controller.

8. The full-screen fingerprint recognizing touch display screen of claim 1 , wherein the metal mesh lines are high-resolution metal lines having a resolution satisfying a predetermined value.

9. The full-screen fingerprint recognizing touch display screen of claim 1 , wherein a fingerprint recognition sensing manner and a touch sensing manner of the full-screen fingerprint recognizing touch display screen are self-capacitance sensing.

10. A full-screen fingerprint recognizing touch display screen, comprising:
a flexible substrate;
a buffer layer on the flexible substrate;
a thin film transistor layer on the buffer layer;
an anode layer on the thin film transistor layer;
an organic light-emitting layer on the anode layer, and comprising pixel units, each pixel unit comprising three sub-pixels;
a cathode layer on the organic light-emitting layer;
a thin film package layer on the cathode layer; and
metal mesh lines disposed over the thin film package layer;
a protective cover disposed over the thin film package layer;
wherein the metal mesh lines are patterned into fingerprint sensing electrodes independent from each other, wherein each of the fingerprint sensing electrodes corresponds to a corresponding plurality of first sub-pixels of the pixel units in position; and wherein each of the fingerprint sensing electrodes comprises a corresponding metal mesh comprising a plurality of corresponding first metal mesh lines and a plurality of corresponding second metal mesh lines, wherein a corresponding one of the first metal mesh lines is directly disposed corresponding to a corresponding gap between each two neighboring rows of the first sub-pixels, and a corresponding one of the second metal mesh lines is directly disposed corresponding to a corresponding gap between each two neighboring columns of the first sub-pixels.

11. The full-screen fingerprint recognizing touch display screen of claim 10 , wherein the metal mesh lines are formed on a surface of the thin film package layer on a side away from the flexible substrate, and are distributed on an entire surface of the thin film package layer.

12. The full-screen fingerprint recognizing touch display screen of claim 10 , wherein the metal mesh lines are formed on an inner surface of the protective cover, and are distributed on an entire surface of the protective cover.

13. The full-screen fingerprint recognizing touch display screen of claim 12 , wherein the metal mesh lines are patterned into at least two fingerprint sensing electrodes, and a pitch between each two of the fingerprint sensing electrodes is same as a width of each of the gaps.

14. The full-screen fingerprint recognizing touch display screen of claim 13 , wherein a width of each of the metal mesh lines is smaller than or equal to the width of each of the gaps between the corresponding sub-pixels.

15. The full-screen fingerprint recognizing touch display screen of claim 14 ,
wherein each of the fingerprint sensing electrodes is connected to a corresponding switch unit: and
wherein during a fingerprint recognizing operation, the switch unit controls the corresponding fingerprint sensing electrode to conduct, sense fingerprint capacitance, and recognize; during a touch operation, at least two switch units are closed to form a touch sensing electrode to determine a touched position.

16. The full-screen fingerprint recognizing touch display screen of claim 15 , wherein the touch sensing electrode is connected to a touch sensing controller, and the fingerprint sensing electrode is connected to a fingerprint sensing controller.

17. The full-screen fingerprint recognizing touch display screen of claim 10 , wherein the metal mesh lines are high-resolution metal lines having a resolution satisfying a predetermined value.

18. The full-screen fingerprint recognizing touch display screen of claim 10 , wherein a fingerprint recognition sensing manner and a touch sensing manner of the full-screen fingerprint recognizing touch display screen are self-capacitance sensing.

Assignees

• Wuhan China Star Optoelectronics Semiconductor Display Tech Co Ltd

Inventors

• Ye Jian

Classifications

• H10K59/65

  OLEDs integrated with inorganic image sensors · CPC title

• H10K59/873

  Encapsulations · CPC title

• G06V40/1306

  non-optical, e.g. ultrasonic or capacitive sensing · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• H10K50/844

  Encapsulations · CPC title