WO2021093294A1

WO2021093294A1 - Electronic device

Info

Publication number: WO2021093294A1
Application number: PCT/CN2020/090766
Authority: WO
Inventors: 涂志中
Original assignee: 神盾股份有限公司
Priority date: 2019-11-12
Filing date: 2020-05-18
Publication date: 2021-05-20
Also published as: TWM602669U; CN211857496U; TW202119266A; CN212411211U; CN111401338A; TWI754934B; TWM602234U

Abstract

An electronic device (100), comprising a fingerprint sensing module (110), a display panel (120), a connection layer (130), and multiple support assemblies (140). The fingerprint sensing module (110) receives a sensing beam (L2). The fingerprint sensing module (110) comprises a collimating layer (112). The display panel (120) is configured on the fingerprint sensing module (110), and provides an illumination beam (L1) to a finger (10) so as to reflect the sensing beam (L2). The connection layer (130) is connected between the fingerprint sensing module (110) and the display panel (120). The connection layer (130) is annular. The multiple support assemblies (140) are configured on the fingerprint sensing module (110). The support assemblies (140) are non-light transmitting. The collimating layer (112) comprises multiple light-transmitting holes (H), and the multiple support assemblies (140) do not overlap the multiple light-transmitting holes (H) in the vertical direction.

Description

Electronic device

Technical field

The invention relates to an electronic device, in particular to an electronic device with fingerprint identification function.

Background technique

In current devices, optical adhesives (such as solid transparent optical adhesives (Optically Clear Adhesive, OCA) or ultraviolet curing resins (Optically Clear Resin, OCR)) are often used to combine the light-emitting display and the under-screen optical Fingerprint recognition module. However, the yield rate of the device adopting the full bonding method is low, which will cause consumption and scrapping of the light-emitting display screen during the bonding process, which will inevitably cause an increase in cost. Therefore, controlling the bonding yield is more important than the material cost.

In addition, under strong light or direct sunlight, reflected light will be generated between the light-emitting display and the under-screen optical fingerprint recognition module, which will affect the image quality of the fingerprint. In order to avoid the consumption and scrapping of the light-emitting display during the lamination process, an improved solution for the bonding of a large-area full-screen fingerprint recognition module and a light-emitting display is improved, and the light-emitting display is solved under strong light or direct sunlight. The problem of light reflected between the screen and the under-screen optical fingerprint recognition module is something that this field needs to focus on.

Summary of the invention

The invention provides an electronic device, which can improve the overall structural strength and increase image clarity.

The invention provides an electronic device including a fingerprint sensing module, a display panel, a connection layer and a plurality of supporting components. The fingerprint sensing module receives the sensing beam. The fingerprint sensing module includes a collimation layer. The display panel is configured in the fingerprint sensing module, and provides an illuminating beam to the finger to reflect the sensing beam. The connection layer is connected between the fingerprint sensing module and the display panel. The connecting layer is ring-shaped. The multiple supporting components are configured in the fingerprint sensing module. The supporting component is non-transparent. The collimation layer includes a plurality of light-transmitting holes, and the plurality of supporting components does not overlap the plurality of light-transmitting holes in a vertical direction.

Based on the above, in the electronic device of the present invention, the display panel and the fingerprint sensing module are connected in a framed manner through the connection layer, and the display panel and the fingerprint sensing module are configured with a plurality of supporting components for supporting the display panel to interact with each other. The fingerprint sensing module has an interval. In this way, it is possible to prevent the display panel from touching or hitting the fingerprint sensor module due to finger pressing, thereby causing damage to the display panel, thereby increasing the structural strength of the electronic device.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, embodiments accompanied with accompanying drawings are described in detail below.

Description of the drawings

FIG. 1 is a schematic diagram of an electronic device according to an embodiment of the invention.

Description of reference signs:

10: finger;

100: electronic device;

110: Fingerprint sensor module;

112: collimation layer;

114: sensing layer;

116: filter layer;

118: Anti-reflection layer;

120: display panel;

130: connection layer;

140: Support component;

142: top;

144: bottom;

A: Air;

D1: vertical direction;

H: light hole;

L1: Illumination beam;

L2: sensing beam;

LE: Ambient light beam.

Detailed ways

The embodiments of the present invention will be described in detail below with the accompanying drawings. It can be understood that the attached drawings are used for description and explanation purposes, not for limitation purposes. For the sake of clarity, the components may not be shown to actual scale. In addition, some components and/or component symbols may be omitted in some drawings. In the specification and drawings, the same or similar component symbols are used to indicate the same or similar components. When it is stated that a component is "installed in", "connected to"... another component, the component can be "directly installed in", "directly connected"... another component, or an intermediary Components. It can be expected that the elements and features in one embodiment can be incorporated into another embodiment and bring benefits when feasible, and this is not further elucidated.

FIG. 1 is a schematic diagram of an electronic device according to an embodiment of the invention. Please refer to Figure 1. This embodiment provides an electronic device 100 including a fingerprint sensing module 110, a display panel 120, a connection layer 130, and a plurality of supporting components 140. The electronic device 100 has a fingerprint recognition function, which is suitable for allowing a user to perform fingerprint sensing by pressing on the display panel 120. Specifically, the display panel 120 transmits the illumination light beam L1 to the user's finger 10 to reflect and generate the sensing light beam L2. The electronic device 100 receives the sensing light beam L2 for fingerprint sensing. For example, the electronic device 100 is, for example, a smart phone, a tablet computer, a notebook computer, or a touch-sensitive display device, etc., and the present invention is not limited thereto.

The fingerprint sensing module 110 receives the sensing light beam L2. In detail, the fingerprint sensing module 110 includes a collimation layer 112. The collimating layer 112 includes a plurality of light-transmitting holes H for collimating the light beam passing through the collimating layer 112. Specifically, the fingerprint sensing module 110 further includes a sensing layer 114, a filter layer 116, and an anti-reflection layer 118. The collimation layer 112 is disposed between the sensing layer 114 and the filter layer 116, and the filter layer 116 is disposed on Between the sensing layer 114 and the anti-reflection layer 118. The sensing layer 114 is, for example, an image sensing chip such as a complementary metal oxide semiconductor (CMOS) or a charge coupled device (CCD). The filter layer 116 is, for example, an infrared cut filter for use. However, in other embodiments, the filter layer 116 may also be a filter for filtering other visible light wavebands or invisible light wavebands. The anti-reflective layer 118 is, for example, an anti-reflective coating, which is used to reduce reflection, thereby improving the photosensitive effect of the fingerprint sensor module 110. In addition, when the ambient light beam LE such as strong light or sunlight is directly irradiated, the reflected light generated between the display panel 120 and the fingerprint sensing module 110 can be prevented from affecting the fingerprint image. Therefore, the sensing quality of the fingerprint sensing module 110 can be improved.

The display panel 120 is adapted to provide the illumination light beam L1 to the user's finger 10 to reflect the sensing light beam L2. The display panel 120 is, for example, an organic light-emitting diode (OLED) display panel. However, in other embodiments, the display panel 120 may also be a liquid crystal display panel or other suitable display panels, and the present invention is not limited to this.

The connection layer 130 is connected between the fingerprint sensor module 110 and the display panel 120, wherein the connection layer 130 is ring-shaped. In other words, there is a light opening in the sensing area corresponding to the fingerprint sensing module 110 to allow the sensing light beam L2 to pass through. In this embodiment, the connection layer 130 is made of a non-transmissive material, such as an ultraviolet curable glue. As a result, during the assembly process, the use of UV curable glue for bonding can increase the chance of reassembly by heating. Therefore, it can replace the full bonding process of optical glue, improve the assembly fault tolerance rate, and further improve the yield rate of manufacturing the electronic device 100. In addition, the use of UV-curable adhesives for close bonding can prevent the interior from being invaded by dust or moisture, so it can improve image clarity. However, in other embodiments, the connection layer 130 may also be a double-sided tape, and the present invention is not limited to this.

A plurality of support components 140 are disposed on the fingerprint sensing module 110, between the fingerprint sensing module 110 and the display panel 120, the filter layer 116 is located between the collimation layer 112 and the support component 140, and the anti-reflection layer 118 is disposed on the filter. Between the optical layer 116 and the support assembly 140. The supporting component 140 is a non-transmissive interval structure, for example, made of a polymer material. For example, the support component 140 can be implemented by photolithography and etching (Photolithography and Etching Process, PEP), roll to roll, precision embossing, laminate, printing, or the above Any combination of manufacturing processes is formed on the fingerprint sensing module 110. These supporting components 140 do not overlap the light-transmitting holes H of the collimating layer 112 in the vertical direction D1. In other words, there is air A between the supporting components 140, and when the sensing beam L2 is transmitted from the finger 10 to the fingerprint sensing module 110, it will not be blocked by the supporting components 140.

In addition, in this embodiment, the supporting assembly 140 abuts the display panel 120 in a butting manner. In other words, the support assembly 140 is connected to the fingerprint sensing module 110 only with the bottom 144, the display panel 120 is connected to the fingerprint sensing module 110 through the connection layer 130, and the support assembly 140 is not directly connected to the display panel 120. Therefore, during fingerprint sensing, the finger 10 can have elastic space when pressing the display panel 120, thereby increasing the structural strength of the electronic device 100. In addition, it can also reduce the difficulty of dismantling during maintenance.

In terms of a single supporting component 140, the supporting component 140 has a flat top 142, and the area of the top 142 of the supporting component 140 is smaller than the area of the bottom 144. For example, the supporting component 140 is a flat-topped cone-shaped geometric cylinder. Therefore, the ambient light or stray light transmitted from the side can be effectively blocked, thereby improving the clarity of the image. In this way, it is possible to prevent the display panel 120 from touching or hitting the fingerprint sensor module 110 due to the pressing of the finger 10, thereby causing damage to the display panel 120, thereby increasing the structural strength of the electronic device 100. In different embodiments, the appearance of the support component 140 can be any geometric shape, and the area of the top 142 of the support component 140 can also be larger than the area of the bottom 144, and the sensing beam L2 can be directly transmitted to the fingerprint sensing module without being blocked. 110.

In summary, in the electronic device of the present invention, the display panel and the fingerprint sensing module are connected in a frame-attached manner through the connecting layer, and the display panel and the fingerprint sensing module are configured with a plurality of supporting components to support the display panel It is separated from the fingerprint sensor module. In this way, it is possible to prevent the display panel from touching or hitting the fingerprint sensing module due to the finger pressing, thereby causing damage to the display panel, thereby increasing the structural strength of the electronic device.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Any person skilled in the art, without departing from the spirit and scope of the present invention, can make some changes and modifications, so the present invention The scope of protection shall be subject to what is defined in the claims.

Claims

An electronic device, characterized in that it comprises:

A fingerprint sensing module to receive a sensing beam, the fingerprint sensing module including a collimation layer;

The display panel is configured on the fingerprint sensing module and provides an illuminating light beam to the finger to reflect the sensing light beam;

A connection layer connected between the fingerprint sensing module and the display panel, the connection layer is ring-shaped; and

A plurality of supporting components are arranged in the fingerprint sensing module, and the supporting components are non-transparent,

Wherein, the collimation layer includes a plurality of light-transmitting holes, and the plurality of supporting components does not overlap the plurality of light-transmitting holes in a vertical direction.
The electronic device of claim 1, wherein the plurality of supporting components abut the display panel.
The electronic device according to claim 1, wherein there is air between the adjacent plurality of supporting components.
The electronic device according to claim 1, wherein the material of the plurality of supporting components is a polymer material.
The electronic device according to claim 1, wherein each of the plurality of supporting components has a flat top.
The electronic device according to claim 1, wherein the top area and the bottom area of the plurality of supporting components are different.
The electronic device of claim 1, wherein the fingerprint sensing module further comprises a sensing layer and a filter layer, and the collimating layer is located between the sensing layer and the filter layer, The filter layer is located between the collimating layer and the plurality of supporting components.
8. The electronic device according to claim 7, wherein the fingerprint sensing module further comprises an anti-reflection layer disposed between the filter layer and the plurality of supporting components.
The electronic device according to claim 1, wherein the connection layer is non-transparent.
The electronic device according to claim 1, wherein the connecting layer is a UV curable glue.