CN210573825U - Fingerprint identification subassembly, optics fingerprint display module assembly and electron device - Google Patents
Fingerprint identification subassembly, optics fingerprint display module assembly and electron device Download PDFInfo
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- CN210573825U CN210573825U CN201921212417.9U CN201921212417U CN210573825U CN 210573825 U CN210573825 U CN 210573825U CN 201921212417 U CN201921212417 U CN 201921212417U CN 210573825 U CN210573825 U CN 210573825U
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Abstract
The utility model provides a fingerprint identification subassembly, optics fingerprint display module assembly electron device, the electronic device who has display module assembly is applied to the fingerprint identification subassembly, display module assembly includes display panel at least and is located display panel is last to show the apron, the fingerprint identification subassembly includes: the LCD screen fingerprint identification device comprises a display panel, a fingerprint identification module and a light source, wherein the fingerprint identification module is positioned below the display panel, the display cover plate is provided with an accommodating space for accommodating the light source, so that the light source is arranged on the fingerprint identification module, the accommodating space is used for shortening the distance between the light source and a fingerprint identification area on the display module, and the problem that the distance between the light source and a finger in the fingerprint identification area is difficult to shorten due to the fact that the light source is integrated in the fingerprint identification module by a conventional LCD screen fingerprint identification scheme is solved.
Description
Technical Field
The application relates to the technical field of display, especially, relate to a fingerprint identification subassembly, optics fingerprint display module assembly and electron device.
Background
Fingerprint identification technology is often applied to display screens of intelligent terminals such as mobile phones and tablet computers. In order to bring the extreme visual experience and good use experience to the user, the comprehensive screen is designed to be the mainstream design of the current intelligent terminal. In order to realize a full screen design, the fingerprint identification component is usually arranged in a non-display area at the bottom of the mobile phone, namely, in a black frame at the bottom of the mobile phone.
Among the prior art, in order to improve fingerprint signal intensity, the fingerprint identification subassembly needs an external light source to carry out supplementary work, and the position of placing of this external light source can directly influence the signal intensity and the whole size of module of fingerprint image. At present, a fingerprint identification module under an existing LCD (Liquid Crystal Display, abbreviated as LCD) screen, as shown in fig. 1 and fig. 2, a light source 2 is integrated in the fingerprint identification module 3 in the LCD screen fingerprint identification module 3, the light source 2 and the fingerprint identification module 3 are integrated into a whole, during fingerprint identification, the light source 2 is applied to a finger in a fingerprint identification area through a Liquid Crystal Display component above the fingerprint identification module 3 and a black shielding object (i.e. a non-Display area) at the bottom of a mobile phone, so that the finger is lighted up, the light source carries fingerprint image information, the fingerprint image information is transmitted to the fingerprint identification module 3 through a Liquid Crystal Display component above the fingerprint identification module 3, the fingerprint image information is received by the fingerprint identification module 3, and image processing and fingerprint identification work are performed.
However, in the above-mentioned fingerprint identification scheme, because the light source integration is in the fingerprint identification module, the change of light source position will directly influence the size of whole fingerprint identification module to the distance that the light source arrived fingerprint identification district finger position department is difficult to be shortened, thereby difficult shortening light source and fingerprint identification district finger distance and promoting fingerprint signal intensity.
SUMMERY OF THE UTILITY MODEL
The utility model provides a fingerprint identification subassembly, optics fingerprint display module assembly and electron device to solve the fingerprint identification scheme under the current LCD screen and integrate the light source in the fingerprint identification module assembly, so that the difficult problem that shortens the distance that light source and fingerprint identification district pointed.
In a first aspect, the utility model provides a fingerprint identification subassembly is applied to the electron device who has the display module assembly, the display module assembly includes display panel and is located at least display cover plate on the display panel, the fingerprint identification subassembly includes: the display cover plate is provided with a containing space for containing the light source, so that the light source is arranged on the fingerprint identification module, and the containing space is used for shortening the distance between the light source and a fingerprint identification area on the display module.
The utility model discloses an among the specific embodiment, the display cover board is equipped with non-display area at least, accommodation space is located non-display area, the light source with the fingerprint identification module is all established in the non-display area.
The utility model discloses an among the specific implementation, accommodation space is for establishing the non-display area orientation cavity structures on one side of the fingerprint identification module.
The utility model discloses an in the concrete implementation mode, accommodation space is interior concave structure, just interior concave structure's opening orientation fingerprint identification module.
In a specific embodiment of the present invention, the accommodating cavity is a blind hole structure.
In a specific embodiment of the present invention, the light source is an invisible light source independent of the display module.
The utility model discloses an among the specific implementation, the display cover board is in non-display area with on the adjacent one side of fingerprint identification module and all be equipped with the shielding layer on the inner wall that holds.
In a specific embodiment of the present invention, the shielding layer is made of a material transparent to the light wave emitted from the light source.
In a specific embodiment of the present invention, when the light source is a near-infrared light source, the shielding layer is made of infrared transparent ink.
The utility model discloses an in the concrete implementation mode, it still is equipped with the display area to show the apron, non-display area is located display area's periphery, fingerprint identification region at least part is located in the display area.
The utility model discloses an in the concrete implementation mode, the display cover board with still be equipped with first circuit board between the display panel, the light source sets up on the first circuit board and with first circuit board electricity is connected.
The utility model discloses an in the concrete implementation mode, when first circuit board is printed circuit board, printed circuit board with still be equipped with the second circuit board between the light source, the second circuit board be used for with the light source with printed circuit board's connecting circuit is connected with the external circuit electricity, wherein, the second circuit board is flexible printed circuit board.
The utility model discloses an among the specific implementation manner, the second circuit board with the line regional electricity of walking of liquid crystal display subassembly is connected afterwards with the external circuit electricity is connected, perhaps the second circuit board with the line regional electricity of walking of fingerprint identification module is connected afterwards again with the external circuit electricity is connected.
The utility model discloses an in the concrete implementation mode, when first circuit board is flexible printed circuit board, flexible printed circuit board with still be equipped with the stiffening plate between the liquid crystal display subassembly.
In a second aspect, the present invention provides an optical fingerprint display module, which at least comprises a display module and a fingerprint identification module as described above, wherein the display module at least comprises a display panel and a display cover plate located on the display panel;
the fingerprint identification assembly includes: the display cover plate is provided with an accommodating space for accommodating the light source, so that the light source is arranged on the fingerprint identification module; the light source is used for to the regional transmission of fingerprint identification on the display module assembly shines light, it shines to shine light forms the reverberation when the finger in fingerprint identification region, and sees through fingerprint identification module top the display module assembly transmit to the fingerprint identification module assembly.
The utility model discloses an in the concrete implementation mode, it includes display area and non-display area to show the apron, non-display area is located display area's periphery, just the fingerprint identification subassembly with the light source is all established in the non-display area.
The utility model discloses an in the concrete implementation mode, the fingerprint identification module is located non-display area's top or bottom, the light source distributes at least one side of fingerprint identification module.
In a specific embodiment of the present invention, the light source is disposed on the side wall of the non-display area, the fingerprint identification module is located in the non-display area and close to one corner of the light source.
In a specific embodiment of the present invention, when the light source is disposed at the top or the bottom of the non-display area, the light source is distributed on one side or both sides of the fingerprint identification module.
In a specific embodiment of the present invention, the display panel includes at least a liquid crystal display panel located on the fingerprint identification module and a color filter layer located between the liquid crystal display panel and the circuit board.
In another embodiment of the present invention, the display panel further includes a bonding layer, the bonding layer is located between the display cover plate and the color filter layer, the first surface of the bonding layer and the circuit board respectively bond with the display cover plate, the second surface of the bonding layer and the color filter layer bond.
A third aspect of the present invention provides an electronic device, the electronic device includes any one of the above optical fingerprint display module.
The utility model provides a fingerprint identification subassembly, optics fingerprint display module assembly and electron device, the electronic device who has display module assembly is applied to the fingerprint identification subassembly, display module assembly includes display panel at least and is located display cover plate on the display panel, the fingerprint identification subassembly includes: a fingerprint identification module and a light source under the display panel, wherein the display cover plate is provided with an accommodating space for accommodating the light source, the light source is released from the fingerprint identification module by arranging the accommodating space on the display cover plate, and is arranged on the fingerprint identification module, on one hand, the change of the position of the light source can not affect the size of the fingerprint identification module, on the other hand, compared with the prior art that the light source is integrated in the fingerprint identification module, because the light source is arranged in the accommodating space and is positioned on the fingerprint identification module, the vertical distance between the light source and the display module can be effectively shortened, the light source can be freely and horizontally placed in a certain range of the display module through the accommodating space, the position of the fingerprint identification area can be arbitrarily set within a certain range according to the placement of the light source. Therefore, the light source is followed release in the fingerprint identification module, through accommodation space can shorten the light source with the regional distance of fingerprint identification on the display module assembly, and then promote fingerprint signal intensity. The utility model discloses a shorten the light source with the purpose of the regional distance of fingerprint identification on the display module assembly has solved the fingerprint identification scheme under the current LCD screen and has integrateed the light source in the fingerprint identification module to the difficult problem that shortens the distance that light source and fingerprint identification district pointed.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of a conventional fingerprint recognition module under an LCD screen;
FIG. 2 is a schematic structural diagram of a conventional fingerprint recognition module under an LCD screen in a location area of an electronic device;
fig. 3 is a schematic structural diagram of a fingerprint identification module according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a fingerprint identification module according to a fourth embodiment of the present invention;
fig. 5 is a schematic diagram of placement positions of the fingerprint identification module and the light source according to a seventh embodiment of the present invention;
fig. 6 is a schematic view of another placement position of the fingerprint identification module and the light source according to a seventh embodiment of the present invention;
fig. 7 is a schematic diagram of placement positions of the fingerprint identification module and the light source according to an eighth embodiment of the present invention.
Description of reference numerals:
a display module-1;
display cover-11;
an accommodation space-1101;
display area-1102;
non-display area-1103;
a shielding layer-1104;
fingerprint identification area-1105;
a display panel-12;
a liquid crystal panel-1201;
liquid crystal panel routing area-1202;
a color filter layer-1203;
an adhesive layer-1204;
a light source-2;
a fingerprint identification module-3;
a first circuit board-4;
a second circuit board-5;
a reinforcing plate-6.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to improve the signal intensity of the fingerprint, the fingerprint identification module needs an external light source to perform the supplementary work, and the placement position of the external light source can directly affect the signal intensity of the fingerprint image and the overall size of the module, at present, the existing LCD screen lower fingerprint identification module 3 is shown in figure 1 and figure 2, in the fingerprint identification scheme, the light source 2 is integrated in the fingerprint identification module 3, the light source 2 and the fingerprint identification module 3 are integrated into an integrated structure, during the fingerprint identification, the light source 2 is struck on the finger of the fingerprint identification area 1105 through the liquid crystal display module above the fingerprint identification module 3 and the black shelter (namely, the non-display area 1103) at the bottom of the mobile phone, so that after the finger is lightened, the light source sent by the light source 2 carries the fingerprint image information, the fingerprint image information is transmitted to the fingerprint identification module 3 through the liquid crystal display module above the fingerprint identification module 3 and received by the fingerprint identification module 3, and performs image processing and fingerprint recognition. However, among the fingerprint identification module 3 under the above-mentioned LCD screen, in order to improve fingerprint signal intensity, need change the position of placing of light source 2, however, fingerprint identification module 3 is because with light source 2 integration in fingerprint identification module 3 under the above-mentioned LCD screen, and the finger apart from the fingerprint detection region of display module 1 is far away, be subject to the size of whole integrated module structure simultaneously, this module can occupy the region of the electron device of broad, be unfavorable for the nimble position that changes module and light source 2, therefore, if change the position of placing of light source, will certainly directly influence the size of whole fingerprint identification module 3, in addition, owing to will lead to the difficult shortening of distance that light source 2 reachd fingerprint identification district finger position in light source 2 integration in fingerprint identification module 3, and then make the difficult fingerprint signal intensity obtain the promotion. In order to shorten the distance that 2 reachs the fingerprint identification district finger position, promote fingerprint signal intensity, the embodiment of the utility model provides a fingerprint identification subassembly, optics fingerprint display module assembly and electron device.
The technical solution of the present invention will be described in detail with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Example one
Fig. 3 is a schematic structural diagram of a fingerprint identification module according to an embodiment of the present invention.
As shown in fig. 3, this embodiment provides a fingerprint identification component, is applied to the electronic device with display module 1, and display module 1 includes display panel 12 at least, and is located the display cover plate 11 on display panel 12, and the fingerprint identification component includes: the fingerprint identification module 3 and the light source 2 that are located under display panel 12 are equipped with the accommodation space 1101 that is used for holding the light source 2 on the display cover plate 11 to make the light source 2 establish on fingerprint identification module 3, accommodation space 1101 is used for shortening the distance of fingerprint identification area 1105 on light source 2 and the display module 1.
Wherein, in this embodiment, light source 2 is used for shining light to the regional 1105 transmission of fingerprint identification on the display module assembly 1, shines light and forms the reverberation when shining the finger of the regional 1105 of fingerprint identification to see through display module assembly 1 transmission to fingerprint identification module assembly 3 of fingerprint identification module assembly 3 top, and then promote fingerprint identification intensity.
It should be noted that, in this embodiment, when the light source 2 is fingerprint identification, it plays a certain supplementary role to the detection light source in the fingerprint identification module 3, and therefore, the setting of the light source 2 can not play the role of interference to the detection light source in the fingerprint identification module 3. In this embodiment, only the position of the light source 2 is further improved, and the detection light source in the fingerprint identification module 3 is not further described in this embodiment.
In the embodiment, as shown in fig. 3, the fingerprint identification module 3 is located below the display panel 12, and the accommodating space 1101 for accommodating the light source 2 is provided on the display cover plate 11, so that the light source 2 is located in the accommodating space 1101 and the light source 2 is located above the fingerprint identification module 3, compared with the existing LCD screen lower fingerprint identification module 3, the embodiment releases the light source 2 from the fingerprint identification module 3, and reduces the width of the existing LCD screen lower fingerprint identification module 3 after the light source is integrated by the fingerprint identification module 3 to a certain extent, so that the change of the position of the light source 2 does not affect the size of the fingerprint module, and the position of the light source 2 can be flexibly changed, and the accommodating space 1101 for accommodating the light source 2 is provided on the display cover plate 11, so that the light source 2 is located above the fingerprint module, further compared with the existing LCD screen lower fingerprint identification module 3, the vertical distance between the light source 2 and the display module 1 is shortened, and the horizontal position of the light source 2 in the embodiment can be freely adjusted within a certain range, so that the distance between the light source 2 and the fingerprint identification area 1105 on the display module 1 can be shortened by the arrangement of the accommodating space 1101 in the embodiment, and the fingerprint signal intensity is further improved.
It should be noted that, in this embodiment, the horizontal position of the light source 2 can be freely adjusted within a certain range, and specifically, the horizontal opening length of the accommodating space 1101 can be greater than the horizontal length of the light source 2, so that the light source 2 can be freely placed in the accommodating space 1101 in the horizontal direction.
Wherein, in this embodiment, light source 2 can be close to the regional 1105 settings of fingerprint identification of display module assembly 1 to shorten light source 2 and the regional distance of fingerprint detection, and then promote fingerprint signal intensity. It should be noted that, in this embodiment, the position of the light source 2 is not limited to the position of the fingerprint recognition module 3 compared to the conventional LCD screen lower fingerprint recognition module 3.
In this embodiment, the accommodating space 1101 may be a cavity structure with an opening at one end, and may be a semi-open structure or other structures, that is, in this embodiment, the accommodating space 1101 includes, but is not limited to, a cavity structure with an opening at one end. In this embodiment, the top of the accommodating space 1101 may be parallel to the top of the light source 2, or may form an angle with the top of the light source 2. In this embodiment, the structure of the accommodating space 1101 is not further limited, that is, in this embodiment, it is only necessary to ensure that the light source 2 can be placed in the accommodating space 1101, and the distance between the light source 2 and the finger in the fingerprint recognition area 1105 can be shortened by the structure of the accommodating space 1101 on the display cover 11.
It should be noted that, in this embodiment, the manner of disposing the cavity structure on the display cover plate 11 may be implemented by laser processing, or by mechanical engraving, etching, or photolithography, and the like, wherein what process manner is adopted to dispose the cavity structure on the display cover plate 11 in this embodiment may be considered according to the size and cost required by the accommodating space 1101, and what manner is specifically adopted in this embodiment is not further limited.
In this embodiment, the display cover plate 11 may be a glass cover plate, or may be a cover plate structure made of a transparent material, such as a cover plate structure made of polymethyl methacrylate (PMMA), that is, in this embodiment, the display cover plate 11 includes but is not limited to a glass cover plate.
The utility model provides a fingerprint identification subassembly, optics fingerprint display module assembly and electron device, the fingerprint identification subassembly is applied to the electron device who has display module assembly 1, and display module assembly 1 includes display panel 12 at least and is located display panel 12 on the display cover plate 11, and the fingerprint identification subassembly includes: the fingerprint identification module 3 and the light source 2 are located under the display panel 12, the display cover plate 11 is provided with an accommodating space 1101 for accommodating the light source 2, the accommodating space 1101 is arranged on the display cover plate 11, so that the light source 2 is released from the fingerprint identification module 3 and is arranged on the fingerprint identification module 3, on one hand, the change of the position of the light source 2 does not affect the size of the fingerprint identification module 3, on the other hand, compared with the prior art that the light source 2 is integrated in the fingerprint identification module 3, because the light source 2 is arranged in the accommodating space 1101 and is located on the fingerprint identification module 3, the vertical distance from the light source 2 to the display module 1 can be effectively shortened, and the light source 2 can be freely and horizontally placed in a certain range of the display module 1 through the accommodating space 1101, the position of the fingerprint identification area 1105 can be arbitrarily set in a certain range according to the placement of the light source 2, therefore, the light source 2 is released from the fingerprint identification module 3, and the distance between the light source 2 and the fingerprint identification area 1105 on the display module 1 can be shortened through the accommodating space 1101, so as to improve the fingerprint signal intensity. The utility model discloses a shorten the purpose of the distance of the regional 1105 of fingerprint identification on light source 2 and the display module assembly 1, solved current LCD screen lower fingerprint identification scheme with the light source 2 integration in fingerprint identification module assembly 3 to so that the difficult problem that shortens the distance that light source 2 and fingerprint identification district pointed.
Example two
Further, on the basis of the first embodiment, as shown in fig. 3, in this embodiment, the display cover 11 is at least provided with the non-display area 1103, the accommodating space 1101 is located in the non-display area 1103, and the light source 2 and the fingerprint identification module 3 are both arranged in the non-display area 1103.
In this embodiment, the light source 2 may be arbitrarily disposed in the non-display area 1103, that is, the light source 2 may be disposed in any orientation of the non-display area 1103 through the accommodating space 1101, where the any orientation includes a sidewall, a top, or a bottom of the non-display area 1103.
Further, in the present embodiment, the accommodating space 1101 is a cavity structure disposed on a side of the non-display area 1103 facing the fingerprint identification module 3, that is, the cavity structure is disposed on a side of the non-display area 1103 close to the fingerprint identification module 3.
Further, in this embodiment, the accommodating space 1101 may be a concave structure, and an opening of the concave structure faces the fingerprint identification module 3, and the light source 2 is placed in the concave structure through the opening.
It should be noted that, in this embodiment, in order to better adjust the horizontal position of the light source 2, the horizontal lateral length of the concave structure needs to be greater than the lateral length of the light source 2, wherein the lateral direction is a direction parallel to the surface of the display module 1. In this embodiment, through the horizontal position of adjustment light source 2 in accommodation space 1101, compare fingerprint identification module 3 under current LCD screen, can further shorten the distance of light source 2 and finger in the fingerprint detection area under the prerequisite that does not change fingerprint identification module 3's structural dimension, and then promote fingerprint signal strength.
Further, in this embodiment, hold the chamber and be the blind hole structure, light source 2 sets up in the blind hole structure that one side that shows apron 11 and be close to fingerprint identification module 3 was seted up, and makes light source 2 and be located fingerprint identification module 3 on, can effectively shorten the perpendicular distance of light source 2 apart from display module 1.
EXAMPLE III
Further, on the basis of the first embodiment and the second embodiment, as shown in fig. 3, the light source 2 is a non-visible light source independent of the display module 1, that is, the light source 2 in this embodiment is a fingerprint detection light source independent and different from the display module 1 and the fingerprint identification module 3, the light source 2 is used for emitting irradiation light to the fingerprint identification area 1105 located at the corresponding position of the display area 1102 of the display module 1, the irradiation light forms reflection light when irradiating the finger of the fingerprint identification area 1105, and the reflection light is transmitted to the fingerprint identification module 3 through the display module 1 above the fingerprint identification module 3, so as to improve the fingerprint identification intensity.
Further, in this embodiment, the display cover plate 11 is provided with the shielding layer 1104 on the side of the non-display area 1103 adjacent to the fingerprint identification module 3 and on the inner wall of the display cover plate, and the shielding layer 1104 is disposed to better distinguish the display area 1102 from the non-display area 1102 on the display cover plate 11, in this embodiment, the shielding layer 1104 is made of a material having permeability to the light wave emitted by the light source 2, and the material used for preparing the shielding layer 1104 has higher permeability to the light wave emitted by the light source 2.
Further, in this embodiment, when the light source 2 is a near-infrared light source, the shielding layer 1104 may be made of a black ink that is transparent to infrared light, such as an infrared transparent ink, or other materials that are highly transparent to light waves emitted from the light source 2.
Further, in this embodiment, the display cover 11 is further provided with a display area 1102, the non-display area 1103 is located at the periphery of the display area 1102, and the fingerprint identification area 1105 is at least partially located in the display area 1102, that is, the fingerprint identification area 1105 may be located in the display area 1102, or the fingerprint identification area 1105 may also be partially located in the display area 1102.
It should be noted that, in this embodiment, the display area 1102 is an area for displaying information on the display cover 11, where the information in this embodiment includes information for displaying that is presented by text, image, animation, or a combination of several of them. In this embodiment, the area on the display cover 11 not used for displaying information is the non-display area 1103, the non-display area 1103 is located at the periphery of the display area 1102, that is, the outer side of the display area 1102 is the non-display area 1103, and the light source 2 and the fingerprint identification module 3 in the above embodiments are both located in the non-display area 1103.
Example four
Fig. 4 is a schematic structural diagram of a fingerprint identification module according to a fourth embodiment of the present invention.
Further, on the basis of the first, second and third embodiments, as shown in fig. 3 and 4, in order to better control the state of the light source 2, the first circuit board 4 is further disposed between the display cover 11 and the display panel 12, the light source 2 is disposed on the first circuit board 4 and electrically connected to the first circuit board 4, and the light source 2 can be electrically connected to the first circuit board 4 and then electrically connected to an external circuit by the arrangement of the first circuit board 4, so that the light source 2 can be turned on or off by the external circuit.
In this embodiment, the first Circuit Board 4 may be a Printed Circuit Board (PCB), or may be a Flexible Printed Circuit Board (FPCB).
Further, in this embodiment, as shown in fig. 3 and 4, when the first circuit board 4 is a printed circuit board, the second circuit board 5 is further disposed between the printed circuit board and the light source 2, the second circuit board 5 is used for electrically connecting the connection circuit of the light source 2 and the printed circuit board with an external circuit to control the lighting or extinguishing of the supplementary power supply, and the second circuit board 5 is a flexible printed circuit board, at this time, since the flexible printed circuit board is located between the printed circuit board and the light source 2, the printed circuit board plays a certain supporting and reinforcing role for the flexible printed circuit, so that an additional reinforcing structure does not need to be disposed below the flexible printed circuit.
Further, in the above embodiment, as shown in fig. 3, the second circuit board 5 is electrically connected to the wiring area of the liquid crystal display module and then electrically connected to the external circuit, so that the connection line of the second circuit board 5 connected to the external circuit is more standard, or in this embodiment, as shown in fig. 4, the second circuit board 5 is electrically connected to the wiring area of the fingerprint identification module 3 and then electrically connected to the external circuit, so that the connection line of the second circuit board 5 connected to the external circuit is more standard and the working states of the light source 2 and the fingerprint identification module 3 can be controlled together by the external circuit.
Further, in the above embodiment, when the first circuit board 4 is a flexible printed circuit board, a reinforcing plate 6 is further disposed between the flexible printed circuit board and the liquid crystal display module, and the flexible printed circuit board is supported and reinforced by the reinforcing plate 6 to a certain extent.
In this embodiment, the stiffening plate 6 may be a steel plate, or may be a stiffening plate 6 structure made of other materials and having a certain strength, that is, in this embodiment, the stiffening plate 6 includes but is not limited to a steel plate.
EXAMPLE five
On the basis of the foregoing embodiments, the present embodiment provides an optical fingerprint display module, as shown in fig. 3 and 4, the optical fingerprint display module at least includes a display module 1 and a fingerprint identification component in the foregoing embodiments, the display module 1 at least includes a display panel 12 and a display cover plate 11 located on the display panel 12;
the fingerprint identification component comprises: the fingerprint identification module 3 is located below the display panel 12, and the light source 2, and the display cover plate 11 is provided with an accommodating space 1101 for accommodating the light source 2, so that the light source 2 is arranged above the fingerprint identification module 3; light source 2 is used for shining light to the regional 1105 transmission of fingerprint identification on the display module assembly 1, shines light and forms the reverberation when shining the finger of the regional 1105 of fingerprint identification to see through display module assembly 1 transmission to fingerprint identification module assembly 3 of fingerprint identification module assembly 3 top, and then promote fingerprint identification intensity.
As shown in fig. 3, in the present embodiment, the fingerprint identification module 3 is located below the display panel 12, and the light source 2 is located in the receiving space 1101 and the light source 2 is located above the fingerprint identification module 3 by providing the receiving space 1101 for receiving the light source 2 on the display cover plate 11, the optical fingerprint display module of the present embodiment releases the light source 2 from the fingerprint identification module 3 compared with the existing LCD lower fingerprint identification module 3, so as to reduce the width of the existing LCD lower fingerprint identification module 3 after the light source is integrated into the fingerprint identification module 3 to a certain extent, so that the change of the position of the light source 2 does not affect the size of the fingerprint module, and the position of the light source 2 can be flexibly changed, and the light source 2 is located above the fingerprint module by providing the receiving space 1101 for receiving the light source 2 on the display cover plate 11, further compared with the existing LCD lower fingerprint identification module 3, the vertical distance between the light source 2 and the display module 1 is shortened, and the horizontal position of the light source 2 in the embodiment can be freely adjusted within a certain range, so that the optical fingerprint display module in the embodiment has higher fingerprint signal intensity compared with the existing LCD screen lower fingerprint identification module 3.
EXAMPLE six
Further, on the basis of any one of the above-mentioned embodiments, in this embodiment, the display cover plate 11 includes the display area 1102 and the non-display area 1103, the non-display area 1103 is located the periphery of the display area 1102, and the fingerprint identification module 3 and the light source 2 are all established in the non-display area 1103, release from the fingerprint identification module 3 through the light source 2, can set up the light source 2 in the non-display area 1103 wantonly, can change the position that sets up of the light source 2 in the non-display area 1103 in a flexible way, it is corresponding can freely set up fingerprint identification module 3 and fingerprint detection area in certain extent, with the distance of shortening the light source 2 and the finger in the fingerprint detection area, promote fingerprint identification intensity.
Further, in this embodiment, because be limited to the width of fingerprint identification module 3 itself, fingerprint identification module 3 is located the top or the bottom of non-display area 1103, and light source 2 distributes in at least one side of fingerprint identification module 3 to ensure that light source 2 has nearer distance with the fingerprint detection region.
EXAMPLE seven
Fig. 5 is a schematic diagram of the placement positions of the fingerprint identification module and the light source provided by the seventh embodiment of the present invention, and fig. 6 is a schematic diagram of the placement positions of another fingerprint identification module and the light source provided by the seventh embodiment of the present invention.
On the basis of the sixth embodiment, as shown in fig. 5 and fig. 6, in the present embodiment, when the light source 2 is disposed on the sidewall of the non-display area 1103, the fingerprint identification module 3 is located in a corner of the non-display area 1103 close to the light source 2.
In this embodiment, specifically, as shown in fig. 5 and fig. 6, when the light source 2 is disposed on the left sidewall of the bottom of the non-display area 1103, the fingerprint identification module 3 is located at a corner of the bottom of the non-display area 1103, which is close to the light source 2, and at this time, the fingerprint detection area is located at a corner of the bottom of the display area 1102 of the display cover 11, which is close to the light source 2, that is, the fingerprint detection area is located at the lower left corner of the display area 1102 of the display cover 11; wherein, in this embodiment, the light source 2 also can be set up at the right side wall of non-display area 1103 bottom, and at this moment, the setting of fingerprint identification module 3 and fingerprint detection area refers to the setting mode of fingerprint identification module 3 and fingerprint detection area when above-mentioned light source 2 is located the left side wall of non-display area 1103 bottom. In this embodiment, because the light source 2 is released from the fingerprint identification module 3 and is set up in the display cover 11 alone, therefore, the relative position between the light source 2 and the fingerprint identification module 3 can be liberated to the setting mode of this embodiment light source 2, in the allowable scope, can freely set up the position of light source 2, in order to set up the fingerprint detection area of different regions, meanwhile, because the light source 2 is independent of the independent setting mode of fingerprint identification module 3, the light source 2 need not to place the bottom region of the non-display area 1103 of the display module 1, therefore, in this embodiment, the above-mentioned setting mode of light source 2 can make the bottom region of the non-display area 1103 of the display module 1, namely, the bottom black border width of the electronic device installed with this embodiment optical fingerprint display module narrows down.
Example eight
Fig. 7 is a schematic diagram of placement positions of the fingerprint identification module and the light source according to an eighth embodiment of the present invention.
Further, on the basis of the seventh embodiment, as shown in fig. 7, when the light source 2 is disposed at the top or the bottom of the non-display area 1103, the light source 2 is distributed on one side or two sides of the fingerprint identification module 3.
Wherein, in this embodiment, as shown in fig. 7, light source 2 can set up the nearer position of finger apart from the fingerprint detection region, is not limited to the position that sets up of fingerprint module, and fingerprint identification module 3 can be located the bottom or the bottom of display area 1102, and the setting of fingerprint detection region and fingerprint identification module 3 changes, for example: when fingerprint identification module 3 was located the central point of the bottom of non-display area 1103, fingerprint detection region can be located and shows the display area 1102 of apron 11 under, and light source 2 can distribute in one side or both sides of fingerprint identification mould, and at this moment, the vertical distance of light source 2 apart from display module 1 shortens to some extent than the distance that light source 2 and fingerprint module are integrated together, and light source 2's horizontal distance also can be adjusted.
Example nine
Further, on the basis of the above embodiment, the display panel 12 at least includes the liquid crystal display panel 12 located on the fingerprint identification module 3, and the color filter layer 1203 located between the liquid crystal display panel 12 and the circuit board.
In the embodiment, the liquid crystal display panel 12 may be a Thin Film Transistor (TFT) panel, and may be other liquid crystal display panels 12, such as an OLED panel. In this embodiment, the fingerprint identification module 3 is located the below of liquid crystal display panel 12 and laminates with the below of liquid crystal display panel 12, can't see fingerprint identification module 3 from cell-phone screen top.
In this embodiment, the color filter layer 1203 is a color filter substrate, the color filter substrate is located above the TFT panel, and the rotation direction of the liquid crystal molecules is controlled by changing signals and voltages on the TFT, so as to control whether polarized light of each pixel point is emitted or not to achieve the purpose of displaying.
Further, in the present embodiment, the display panel 12 further includes an adhesive layer 1204, the adhesive layer 1204 is located between the display cover plate 11 and the color filter layer 1203, a first surface of the adhesive layer 1204 is bonded to the circuit board and the display cover plate 11, respectively, and a second surface of the adhesive layer 1204 is bonded to the color filter layer 1203.
In this embodiment, the adhesive layer 1204 may be a bonding adhesive, and may be a substance with both front and back sides having adhesion. In this embodiment, one surface of the circuit board and the display cover plate 11 adjacent to the color filter layer 1203 is bonded to the first surface of the adhesive layer 1204, one surface of the color filter layer 1203 adjacent to the display cover plate 11 is bonded to the second surface of the adhesive layer 1204, and the circuit board and the display cover plate 11 are bonded and fixed to the color filter layer 1203 through the adhesive layer 1204.
In this embodiment, the optical fingerprint display module further includes a backlight module, wherein the backlight module can be disposed below the display module 1, or the backlight module can be disposed below the display module 1 and the fingerprint identification module 3, and in this embodiment, the structure of the backlight module and the position where the backlight module is disposed are not further limited and repeated.
Example ten
On the basis of the above embodiments, the present embodiment provides an electronic device, where the electronic device includes the optical fingerprint display module in the above embodiments, and the electronic device may be an electronic product or a component such as a liquid crystal display device, electronic paper, a mobile phone, a tablet computer, a television, a notebook computer, a digital photo frame, a navigator, a fingerprint lock, and the like.
In the description of the present invention, it is to be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically stated otherwise.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (22)
1. The utility model provides a fingerprint identification subassembly, is applied to the electron device who has the display module assembly, the display module assembly includes display panel at least and is located display cover plate on the display panel, its characterized in that, the fingerprint identification subassembly includes: the display cover plate is provided with a containing space for containing the light source, so that the light source is arranged on the fingerprint identification module, and the containing space is used for shortening the distance between the light source and a fingerprint identification area on the display module.
2. The fingerprint identification assembly of claim 1, wherein the display cover is at least provided with a non-display area, the accommodating space is located in the non-display area, and the light source and the fingerprint identification module are both arranged in the non-display area.
3. The fingerprint identification assembly of claim 2, wherein the receiving space is a cavity structure disposed on a side of the non-display area facing the fingerprint identification module.
4. The fingerprint identification assembly of claim 3, wherein the receiving space is a concave structure, and the concave structure opens towards the fingerprint identification module.
5. The fingerprint identification assembly of any one of claims 2-4, wherein the receiving space is a blind structure.
6. The fingerprint identification assembly of claim 1, wherein the light source is a non-visible light source independent of the display module.
7. The fingerprint identification assembly of claim 1, wherein the display cover plate is provided with a shielding layer on a side of the non-display area adjacent to the fingerprint identification module and on an inner wall of the accommodating space.
8. The assembly of claim 7, wherein the shielding layer is made of a material that is transparent to light waves emitted by the light source.
9. The fingerprint identification assembly of claim 7 or 8, wherein when the light source is a near infrared light source, the shielding layer is made of infrared transparent ink.
10. A fingerprint identification assembly as claimed in any one of claims 1 to 4 wherein said display cover further defines a display area, a non-display area being located at the periphery of said display area, and said fingerprint identification area being located at least partially within said display area.
11. The assembly of any one of claims 1-4, wherein a first circuit board is disposed between the display cover and the display panel, and the light source is disposed on and electrically connected to the first circuit board.
12. The assembly of claim 11, wherein when the first circuit board is a printed circuit board, a second circuit board is disposed between the printed circuit board and the light source, the second circuit board is configured to electrically connect the connection circuit of the light source and the printed circuit board to an external circuit, and the second circuit board is a flexible printed circuit board.
13. The fingerprint identification assembly of claim 12, wherein the second circuit board is electrically connected to the external circuit after being electrically connected to the trace area of the liquid crystal display assembly, or the second circuit board is electrically connected to the external circuit after being electrically connected to the trace area of the fingerprint identification module.
14. The assembly of claim 13, wherein a stiffener is disposed between the flexible printed circuit board and the liquid crystal display assembly when the first circuit board is a flexible printed circuit board.
15. An optical fingerprint display module, comprising at least a display module and the fingerprint identification module as claimed in claims 1-14, wherein the display module comprises at least a display panel and a display cover plate located on the display panel;
the fingerprint identification assembly includes: the display cover plate is provided with an accommodating space for accommodating the light source, so that the light source is arranged on the fingerprint identification module; the light source is used for to the regional transmission of fingerprint identification on the display module assembly shines light, it shines to shine light forms the reverberation when the finger in fingerprint identification region, and sees through fingerprint identification module top the display module assembly transmit to the fingerprint identification module assembly.
16. The optical fingerprint display module of claim 15, wherein the display cover comprises a display area and a non-display area, the non-display area is located at the periphery of the display area, and the fingerprint identification component and the light source are both disposed in the non-display area.
17. The optical fingerprint display module of claim 16, wherein the fingerprint recognition module is located at the top or bottom of the non-display area, and the light source is distributed on at least one side of the fingerprint recognition module.
18. The optical fingerprint display module of claim 17, wherein when the light source is disposed on a sidewall of the non-display area, the fingerprint identification module is located in a corner of the non-display area close to the light source.
19. The optical fingerprint display module of claim 17, wherein the light source is disposed on one or both sides of the fingerprint identification module when the light source is disposed on the top or the bottom of the non-display area.
20. The optical fingerprint display module of claim 15, wherein the display panel comprises at least a liquid crystal display panel located on the fingerprint identification module, and a color filter layer located between the liquid crystal display panel and the circuit board.
21. The optical fingerprint display module of claim 20 wherein the display panel further comprises a bonding layer, the bonding layer is located between the display cover plate and the color filter layer, a first surface of the bonding layer is bonded to the circuit board and the display cover plate, respectively, and a second surface of the bonding layer is bonded to the color filter layer.
22. An electronic device, comprising the optical fingerprint display module according to any one of claims 15-21.
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| CN201921212417.9U CN210573825U (en) | 2019-07-30 | 2019-07-30 | Fingerprint identification subassembly, optics fingerprint display module assembly and electron device |
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| CN201921212417.9U CN210573825U (en) | 2019-07-30 | 2019-07-30 | Fingerprint identification subassembly, optics fingerprint display module assembly and electron device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111066029A (en) * | 2019-07-30 | 2020-04-24 | 深圳市汇顶科技股份有限公司 | Fingerprint identification subassembly, optics fingerprint display module assembly and electron device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111066029A (en) * | 2019-07-30 | 2020-04-24 | 深圳市汇顶科技股份有限公司 | Fingerprint identification subassembly, optics fingerprint display module assembly and electron device |
| CN111066029B (en) * | 2019-07-30 | 2023-10-24 | 深圳市汇顶科技股份有限公司 | Fingerprint identification subassembly, optical fingerprint display module assembly and electron device |
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