Structural component, electronic apparatus, and fingerprint module assembly method

Patent metadata

Field	Value
Publication number	US-11393243-B2
Application number	US-201716759042-A
Country	US
Kind code	B2
Filing date	Oct 27, 2017
Priority date	Oct 27, 2017
Publication date	Jul 19, 2022
Grant date	Jul 19, 2022

Abstract

An electronic apparatus includes a screen and a fingerprint circuit, where an inner surface of the screen is a light shielding layer. The light shielding layer includes a light transmission region located in a display area of the screen, and the fingerprint circuit is attached to the light transmission region using a frame adhesive. The fingerprint circuit includes a first surface facing the screen, a second surface facing away from the screen, and a side surface coupled between the first surface and the second surface. The frame adhesive includes a first connection area and a second connection area that are coupled together, where the second connection area is located on a periphery of the first connection area, the first connection area and the second connection area are bonded to the first surface, and the second connection area is fastened to the side surface using a first sealing adhesive.

First claim

What is claimed is:

1. An electronic apparatus comprising:
a screen comprising:
a display area;
an outer surface, wherein the outer surface is a touch surface; and
an inner surface, wherein the inner surface is a light shielding layer, and wherein the light shielding layer comprises a light transmission region located in the display area;

a fingerprint circuit attached to the light transmission region and comprising:
a first surface facing the screen;
a second surface facing away from the screen; and
a side surface coupled between the first surface and the second surface, wherein the side surface comprises a step surface and a rough surface; and

a frame adhesive configured to attach the fingerprint circuit and the light transmission region, wherein the frame adhesive comprises:
a first connection area configured to bond to the first surface; and
a second connection area coupled to the first connection area and located on a periphery of the first connection area, wherein the second connection area is configured to:
bond to the first surface; and
fasten to the side surface using a first sealing adhesive,
wherein the first sealing adhesive is configured to bond to the step surface and the rough surface.

2. The electronic apparatus of claim 1 , wherein the light transmission region is a through hole disposed on the light shielding layer, and wherein the frame adhesive is accommodated in the through hole.

3. The electronic apparatus of claim 2 , wherein the second connection area comprises an outer edge away from the first connection area, wherein the outer edge is fastened to the light transmission region using a second sealing adhesive, and wherein a gap is disposed between the second sealing adhesive and an inner wall of the through hole.

4. The electronic apparatus of claim 3 , wherein the outer edge comprises an attaching surface configured to bond to the light transmission region, a second outer surface away from the screen, and a side connection surface coupled between the attaching surface and the second outer surface, and wherein the second sealing adhesive is configured to cover the side connection surface and a part of the second outer surface.

5. The electronic apparatus of claim 4 , wherein a first size of the first connection area is greater than a second size of the second connection area.

6. The electronic apparatus of claim 5 , wherein the frame adhesive is of an opaque structure, wherein the first surface comprises a recognition area and a frame area surrounding the recognition area, wherein the frame adhesive is attached to the frame area, and wherein an air layer is formed between the recognition area and the screen.

7. The electronic apparatus of claim 2 , wherein the fingerprint circuit is partially embedded into the through hole.

8. The electronic apparatus of claim 1 , wherein the light transmission region comprises a plurality of light transmission holes, and wherein the light transmission holes are disposed on the light shielding layer and distributed in an array.

9. The electronic apparatus of claim 1 , wherein the frame adhesive is an integrated closed frame structure.

10. The electronic apparatus of claim 1 , wherein the frame adhesive comprises a plurality of segments of sub-adhesive, and wherein the segments of sub-adhesive are arranged in a frame structure.

11. The electronic apparatus of claim 1 , further comprising:
a screen connector disposed on the screen; and
a flexible circuit board disposed on the second surface and electrically coupled to the screen connector.

12. The electronic apparatus of claim 11 , further comprising a stiffener disposed on a side of the flexible circuit board away from the second surface.

13. An electronic apparatus comprising:
a screen comprising:
a display area;
an outer surface, wherein the outer surface is a touch surface; and
an inner surface, wherein the inner surface is a light shielding layer, and wherein the light shielding layer comprises a light transmission region located in the display area;

a fingerprint circuit attached to the light transmission region and comprising:
a first surface facing the screen;
a second surface facing away from the screen; and
a side surface coupled between the first surface and the second surface, wherein the side surface comprises a step surface; and

a frame adhesive configured to attach the fingerprint circuit and the light transmission region, wherein the frame adhesive comprises:
a first connection area configured to bond to the first surface; and
a second connection area coupled to the first connection area and located on a periphery of the first connection area, wherein the second connection area is configured to:
bond to the first surface; and
fasten to the side surface using a first sealing adhesive,
wherein the first sealing adhesive is configured to bond to the step surface.

14. The electronic apparatus of claim 13 , wherein the frame adhesive is an integrated closed frame structure.

15. The electronic apparatus of claim 13 , wherein the frame adhesive comprises a plurality of segments of sub-adhesive, and wherein the segments of sub-adhesive are arranged in a frame structure.

16. The electronic apparatus of claim 13 , further comprising:
a screen connector disposed on the screen;
a flexible circuit board disposed on the second surface and electrically coupled to the screen connector; and
a stiffener disposed on a side of the flexible circuit board away from the second surface.

17. An electronic apparatus comprising:
a screen comprising:
a display area;
an outer surface, wherein the outer surface is a touch surface; and
an inner surface, wherein the inner surface is a light shielding layer, and wherein the light shielding layer comprises a light transmission region located in the display area;

a fingerprint circuit attached to the light transmission region and comprising:
a first surface facing the screen;
a second surface facing away from the screen; and
a side surface coupled between the first surface and the second surface, wherein the side surface comprises a rough surface; and

a frame adhesive configured to attach the fingerprint circuit and the light transmission region, wherein the frame adhesive comprises:
a first connection area configured to bond to the first surface; and
a second connection area coupled to the first connection area and located on a periphery of the first connection area, wherein the second connection area is configured to:
bond to the first surface; and
fasten to the side surface using a first sealing adhesive,
wherein the first sealing adhesive is configured to bond to the rough surface.

18. The electronic apparatus of claim 17 , wherein the frame adhesive is an integrated closed frame structure.

19. The electronic apparatus of claim 17 , wherein the frame adhesive comprises a plurality of segments of sub-adhesive, and wherein the segments of sub-adhesive are arranged in a frame structure.

20. The electronic apparatus of claim 17 , further comprising:
a screen connector disposed on the screen;
a flexible circuit board disposed on the second surface and electrically coupled to the screen connector; and
a stiffener disposed on a side of the flexible circuit board away from the second surface.

Assignees

• Huawei Tech Co Ltd

Inventors

• Wang Fengping
• Cheng Yinghua
• Zhang Wentao

Classifications

• G06V40/1318 Primary

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

• G06F1/1656

  Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories (mounting of accessories to a computer display G06F1/1607; display hoods G06F1/1603; cooling arrangements for portable computers G06F1/203) · CPC title

• G06V40/12

  Fingerprints or palmprints · CPC title

• G06F1/1684 Primary

  Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675 · CPC title

• G06F1/1637

  Details related to the display arrangement, including those related to the mounting of the display in the housing · CPC title