WO2020113819A1 - 具有指纹辨识功能的显示装置 - Google Patents

具有指纹辨识功能的显示装置 Download PDF

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Publication number
WO2020113819A1
WO2020113819A1 PCT/CN2019/074957 CN2019074957W WO2020113819A1 WO 2020113819 A1 WO2020113819 A1 WO 2020113819A1 CN 2019074957 W CN2019074957 W CN 2019074957W WO 2020113819 A1 WO2020113819 A1 WO 2020113819A1
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WIPO (PCT)
Prior art keywords
display device
microcrystalline particles
ultrasonic wave
display
fingerprint recognition
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PCT/CN2019/074957
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English (en)
French (fr)
Inventor
冯校亮
Original Assignee
武汉华星光电半导体显示技术有限公司
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Application filed by 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电半导体显示技术有限公司
Priority to US16/470,249 priority Critical patent/US20210182521A1/en
Publication of WO2020113819A1 publication Critical patent/WO2020113819A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/043—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using propagating acoustic waves
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/40—OLEDs integrated with touch screens
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
    • H10K59/65—OLEDs integrated with inorganic image sensors

Definitions

  • the present disclosure relates to a display device, and in particular to a display device with a fingerprint recognition function.
  • the fingerprint recognition commonly used on mobile phones generally adopts the front button type (Apple mobile phone) or the back capacitive type (Android mobile phone), but with the need for full screen and ultra-thin technology, the design of the fingerprint recognition occupying mobile phone space is increasingly restricted Therefore, various embedded fingerprint recognition technologies adapted to the full screen were developed, such as the ultrasonic mode under the screen or the optical mode using the grating effect.
  • the purpose of the present disclosure is to provide a display device with a fingerprint recognition function, which can solve the problem of increasing the thickness of the mobile phone caused by the under-screen ultrasonic mode or the optical mode using the grating effect in the prior art.
  • a display device with fingerprint recognition function includes: a display panel having a display area and a non-display area; and an ultrasonic fingerprint recognition module disposed on the display device with fingerprint recognition function
  • the interior of the surface includes: a substrate; a reflective layer disposed on the substrate; a plurality of microcrystalline particles distributed in the reflective layer; and at least one ultrasonic wave generating and receiving unit disposed on at least one of the reflective layers
  • the area in which the plurality of microcrystalline particles are distributed corresponds to the display area of the display panel, and the diameter of each of the plurality of microcrystalline particles ranges from 0.01 ⁇ m to 3 ⁇ m.
  • the at least one ultrasonic wave generating and receiving unit corresponds to the non-display area of the display panel.
  • the display device with fingerprint identification function includes a plurality of ultrasonic wave generating and receiving units disposed on both sides of the reflective layer.
  • the number of the plurality of microcrystalline particles increases.
  • the number of the plurality of microcrystalline particles decreases.
  • a display device with fingerprint recognition function includes: a display panel having a display area and a non-display area; and an ultrasonic fingerprint recognition module disposed on the display device with fingerprint recognition function
  • the interior of the surface includes: a substrate; a reflective layer disposed on the substrate; a plurality of microcrystalline particles distributed in the reflective layer; and at least one ultrasonic wave generating and receiving unit disposed on at least one of the reflective layers Side.
  • the distribution area of the plurality of microcrystalline particles corresponds to the display area of the display panel.
  • the diameter of each of the plurality of microcrystalline particles ranges from 0.01 microns to 3 microns.
  • the at least one ultrasonic wave generating and receiving unit corresponds to the non-display area of the display panel.
  • the display device with fingerprint identification function includes a plurality of ultrasonic wave generating and receiving units disposed on both sides of the reflective layer.
  • the number of the plurality of microcrystalline particles increases.
  • the number of the plurality of microcrystalline particles decreases.
  • a display device with fingerprint recognition function includes: a display panel having a display area and a non-display area; and an ultrasonic fingerprint recognition module embedded in the display panel and including: a reflective layer , Which is arranged in the display panel; a plurality of microcrystalline particles distributed in the reflective layer; and at least one ultrasonic wave generating and receiving unit, which is arranged on at least one side of the reflective layer.
  • the display panel includes: a first layer; a second layer disposed on the first layer and used to display an image with the first layer; and a touch layer disposed on the The second layer is used to sense the signal acting on the display panel.
  • the display device with fingerprint recognition function further includes: a polarizer, which is disposed on the ultrasonic fingerprint recognition module; and a protective layer, which is disposed on the polarizer.
  • the ultrasonic wave generating and receiving unit is disposed on the side of the reflective layer, the thickness of the display device can be reduced. Furthermore, since the distribution area of the plurality of microcrystalline particles corresponds to the display area of the display panel, a full-screen design can be achieved.
  • FIG. 1 shows a side view of an ultrasonic fingerprint identification module according to an embodiment of the present disclosure.
  • FIG. 2 shows a top view of a display device with fingerprint recognition function according to an embodiment of the present disclosure.
  • FIG. 3 shows a schematic diagram of reflection of the ultrasonic waves generated by the ultrasonic wave generating and receiving unit through a microcrystalline particle.
  • FIG. 4 shows a schematic diagram of reflection of ultrasonic waves generated by the ultrasonic wave generating and receiving unit through a plurality of microcrystalline particles.
  • FIG. 5 shows a schematic diagram of ultrasonic waves reflected by microcrystalline particles reflected by a fingerprint.
  • FIG. 6 shows a side view of an ultrasonic fingerprint identification module according to another embodiment of the present disclosure.
  • FIG. 7 shows a top view of a display device with fingerprint recognition function according to another embodiment of the present disclosure.
  • FIG. 8 shows a schematic diagram of reflection of the ultrasonic waves generated by the ultrasonic wave generating and receiving unit through a microcrystalline particle.
  • FIG. 9 shows a schematic diagram of reflection of the ultrasonic waves generated by the ultrasonic wave generating and receiving unit through a plurality of microcrystalline particles.
  • FIG. 10 shows a schematic diagram of ultrasonic waves reflected by microcrystalline particles reflected by a fingerprint.
  • FIG. 11 shows a side view of a display device with fingerprint recognition function according to yet another embodiment of the present disclosure.
  • FIG. 1 shows a side view of an ultrasonic fingerprint identification module according to an embodiment of the present disclosure.
  • FIG. 2 shows a top view of a display device with fingerprint recognition function according to an embodiment of the present disclosure.
  • the display device with fingerprint recognition function includes a display panel 10 and the ultrasonic fingerprint recognition module 20.
  • the display panel 10 has a display area 100 and a non-display area 102.
  • the ultrasonic fingerprint identification module 20 includes a substrate 200, a reflective layer 202, a plurality of microcrystalline particles (grains) 204, and at least one ultrasonic generating and receiving unit 206.
  • the ultrasonic fingerprint identification module 20 is disposed inside the upper surface of the display device with a fingerprint identification function.
  • the reflective layer 202 is disposed on the substrate 200.
  • the reflective layer 202 may be a transparent layer and may be made of organic materials.
  • the organic material may be an acrylic organic material.
  • the plurality of microcrystalline particles 204 are distributed and formed in the reflective layer 202.
  • the distribution area of the plurality of microcrystalline particles 204 corresponds to the display area 100 of the display panel 10.
  • Each of the plurality of microcrystalline particles 204 has a diameter ranging from 0.01 microns to 3 microns.
  • the plurality of microcrystalline particles 204 may be made of but not limited to glass.
  • the plurality of microcrystalline particles 204 may also be made of other materials according to requirements.
  • the at least one ultrasonic wave generating and receiving unit 206 is disposed on at least one side of the reflective layer 202 and corresponds to the non-display area 102 of the display panel 10.
  • the at least one ultrasonic wave generating and receiving unit 206 is used to generate ultrasonic waves and receive ultrasonic waves.
  • the arrangement of the plurality of microcrystalline particles 204 may be a regular arrangement or an irregular arrangement. For example, as the distance from the at least one ultrasonic generating and receiving unit 206 increases, the number of the plurality of microcrystalline particles 204 increases. Alternatively, as the distance from the at least one ultrasonic generating and receiving unit 206 increases, the number of the plurality of microcrystalline particles 204 decreases.
  • FIG. 3 shows a schematic diagram of the ultrasound generated by the ultrasound generating and receiving unit 206 reflected by a microcrystalline particle 204.
  • FIG. 4 shows a schematic diagram of the ultrasonic waves generated by the ultrasonic wave generating and receiving unit 206 reflecting through a plurality of microcrystalline particles 204.
  • FIG. 5 shows a schematic diagram of the ultrasonic waves reflected by the microcrystalline particles 204 reflected by a fingerprint 30.
  • the ultrasonic waves 44 reflected by the finger 30 will be partially reflected by the plurality of microcrystalline particles 204, and the plurality of microcrystalline particles 204 Part of the reflected ultrasonic wave 46 will be returned to the ultrasonic generating and receiving unit 206, and the feedback fingerprint information is formed through signal processing to complete fingerprint identification.
  • the ultrasonic wave generating and receiving unit 206 is disposed on the side of the reflective layer 202, the thickness of the display device can be reduced. Furthermore, since the distribution area of the plurality of microcrystalline particles 204 corresponds to the display area 100 of the display panel 10, a full-screen design can be achieved.
  • FIG. 6 shows a side view of an ultrasonic fingerprint identification module according to another embodiment of the present disclosure.
  • 7 shows a top view of a display device with fingerprint recognition function according to another embodiment of the present disclosure.
  • the display device with fingerprint recognition function includes a display panel 50 and the ultrasonic fingerprint recognition module 60.
  • the display panel 50 has a display area 500 and a non-display area 502.
  • the ultrasonic fingerprint identification module 60 includes a substrate 600, a reflective layer 602, a plurality of microcrystalline particles 604, and a plurality of ultrasound generating and receiving units 606.
  • the ultrasonic fingerprint identification module 60 is disposed inside the upper surface of the display device with a fingerprint identification function.
  • the reflective layer 602 is disposed on the substrate 600.
  • the reflective layer 602 can be a transparent layer and can be made of organic materials.
  • the organic material may be an acrylic organic material.
  • the plurality of microcrystalline particles 604 are distributed and formed in the reflective layer 602.
  • the distribution area of the plurality of microcrystalline particles 604 corresponds to the display area 500 of the display panel 50.
  • the diameter of each of the plurality of microcrystalline particles 604 ranges from 0.01 microns to 3 microns.
  • the plurality of microcrystalline particles 604 may be made of but not limited to glass.
  • the plurality of microcrystalline particles 604 may also be made of other materials according to requirements.
  • the display device with a fingerprint recognition function of this embodiment includes a plurality of ultrasonic wave generating and receiving units 606 disposed on the The two sides of the reflective layer 602 are described.
  • the multiple ultrasonic wave generating and receiving units 606 correspond to the non-display area 502 of the display panel 50.
  • the multiple ultrasonic wave generating and receiving units 606 are used to generate ultrasonic waves and receive ultrasonic waves.
  • the arrangement of the plurality of microcrystalline particles 604 may be a regular arrangement or an irregular arrangement. For example, as the distance from the at least one ultrasonic generating and receiving unit 606 increases, the number of the plurality of microcrystalline particles 604 increases. Alternatively, as the distance from the at least one ultrasound generating and receiving unit 606 increases, the number of the plurality of microcrystalline particles 604 decreases.
  • FIG. 8 shows a schematic diagram of the ultrasonic waves generated by the ultrasonic generating and receiving unit 606 reflected by a microcrystalline particle 604.
  • FIG. 9 shows a schematic diagram of the ultrasonic waves generated by the ultrasonic wave generating and receiving unit 606 reflected by a plurality of microcrystalline particles 604.
  • FIG. 10 shows a schematic diagram of ultrasonic waves reflected by the microcrystalline particles 604 reflected by a fingerprint 70.
  • the ultrasonic wave 84 reflected by the finger 70 will be partially reflected by the plurality of microcrystalline particles 604, and the plurality of microcrystalline particles 604 Part of the reflected ultrasonic wave 86 will return to the ultrasonic generating and receiving unit 606 to form the fingerprint information fed back through signal processing to complete fingerprint identification.
  • the ultrasonic wave generating and receiving unit 606 is disposed on both sides of the reflective layer 602, the thickness of the display device can be reduced. Furthermore, since the distribution area of the plurality of microcrystalline particles 604 corresponds to the display area 500 of the display panel 50, a full-screen design can be achieved.
  • FIG. 11 shows a side view of a display device with fingerprint recognition function according to yet another embodiment of the present disclosure.
  • the display device with fingerprint recognition function includes a display panel 90 and an ultrasonic fingerprint recognition module 92.
  • the ultrasonic fingerprint identification module 92 is disposed on the display panel 90.
  • the ultrasonic fingerprint identification module 20 of FIG. 2 is disposed inside the upper surface of the display device with a fingerprint identification function.
  • the ultrasonic fingerprint identification module 60 of FIG. 7 is also disposed inside the upper surface of the display device with a fingerprint identification function.
  • the ultrasonic fingerprint identification module 92 of this embodiment is embedded in the display panel 90.
  • the display panel 90 includes a first layer 900, a second layer 902, and a touch layer 904.
  • the second layer 902 is disposed on the first layer 900 and used to display an image together with the first layer 900.
  • the first layer 900 is an array substrate
  • the second layer 902 is a color filter
  • the display panel 90 is an organic light emitting diode (Organic Light Emitting Diode (OLED) display panel
  • the first layer 900 is an array substrate
  • the second layer 902 is a light emitting layer
  • the touch layer 904 is disposed on the second layer 902 and used to sense a signal acting on the display panel.
  • the signal may be a touch signal or a floating signal.
  • the ultrasonic fingerprint identification module 92 is disposed on the touch layer 904.
  • the structure of the ultrasonic fingerprint identification module 92 can refer to the related descriptions of FIG. 1 and FIG. 6. Since the ultrasonic fingerprint recognition module 92 is disposed on the touch layer 904, the ultrasonic fingerprint recognition modules 20 and 60 of FIGS. 1 and 6 may omit the substrates 200 and 600, respectively.
  • the display device with fingerprint recognition function further includes a polarizer 94 and a protective layer 96.
  • the polarizer 94 is disposed on the ultrasonic fingerprint identification module 92.
  • the protective layer 96 is provided on the polarizer 94.
  • the ultrasonic wave generating and receiving unit is disposed on the side of the reflective layer, the thickness of the display device can be reduced. Furthermore, since the distribution area of the plurality of microcrystalline particles corresponds to the display area of the display panel, a full-screen design can be achieved.

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  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
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  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Collating Specific Patterns (AREA)

Abstract

一种具有指纹辨识功能的显示装置，包括：显示面板，具有显示区以及非显示区；以及超声波指纹辨识模块，设置于所述具有指纹辨识功能的显示装置的上表面的内部并包括：基板；反射层，设置于所述基板上；多个微晶颗粒，分布于所述反射层中；以及至少一超声波发生及接收单元，设置于所述反射层的至少一侧边。

Description

具有指纹辨识功能的显示装置 技术领域
本揭示涉及显示装置，特别是涉及一种具有指纹辨识功能的显示装置。
 背景技术
手机上常用的指纹识别一般采用正面按钮式（苹果手机）或者背部电容式（安卓手机），但随着全面屏和超薄技术的需求，所述指纹识别占用手机空间的设计越来越受到限制，于是发展出适应全面屏的各种嵌入式指纹识别技术，例如屏下超声波模式或利用光栅效应的光学模式等。
然而上述技术会增加手机的厚度，因此需要对现有技术中的问题提出解决方法。
 技术问题
本揭示的目的在于提供一种具有指纹辨识功能的显示装置，其能解决现有技术中屏下超声波模式或利用光栅效应的光学模式造成手机厚度增加的问题。
 技术解决方案
为解决上述问题，本揭示提供的一种具有指纹辨识功能的显示装置包括：显示面板，具有显示区以及非显示区；以及超声波指纹辨识模块，设置于所述具有指纹辨识功能的显示装置的上表面的内部并包括：基板；反射层，设置于所述基板上；多个微晶颗粒，分布于所述反射层中；以及至少一超声波发生及接收单元，设置于所述反射层的至少一侧边，其中所述多个微晶颗粒分布的区域对应至所述显示面板的所述显示区，每一所述多个微晶颗粒的直径范围为0.01微米至3微米之间。
于一实施例中，所述至少一超声波发生及接收单元对应至所述显示面板的所述非显示区。
于一实施例中，所述具有指纹辨识功能的显示装置包括多个超声波发生及接收单元设置于所述反射层的两侧边。
于一实施例中，随着与所述至少一超声波发生及接收单元的距离越远，所述多个微晶颗粒的数量递增。
于一实施例中，随着与所述至少一超声波发生及接收单元的距离越远，所述多个微晶颗粒的数量递减。
为解决上述问题，本揭示提供的一种具有指纹辨识功能的显示装置包括：显示面板，具有显示区以及非显示区；以及超声波指纹辨识模块，设置于所述具有指纹辨识功能的显示装置的上表面的内部并包括：基板；反射层，设置于所述基板上；多个微晶颗粒，分布于所述反射层中；以及至少一超声波发生及接收单元，设置于所述反射层的至少一侧边。
于一实施例中，所述多个微晶颗粒分布的区域对应至所述显示面板的所述显示区。
于一实施例中，每一所述多个微晶颗粒的直径范围为0.01微米至3微米之间。
于一实施例中，所述至少一超声波发生及接收单元对应至所述显示面板的所述非显示区。
于一实施例中，所述具有指纹辨识功能的显示装置包括多个超声波发生及接收单元设置于所述反射层的两侧边。
于一实施例中，随着与所述至少一超声波发生及接收单元的距离越远，所述多个微晶颗粒的数量递增。
于一实施例中，随着与所述至少一超声波发生及接收单元的距离越远，所述多个微晶颗粒的数量递减。
为解决上述问题，本揭示提供的一种具有指纹辨识功能的显示装置包括：显示面板，具有显示区以及非显示区；以及超声波指纹辨识模块，内嵌在所述显示面板中并包括：反射层，设置于所述显示面板中；多个微晶颗粒，分布于所述反射层中；以及至少一超声波发生及接收单元，设置于所述反射层的至少一侧边。
于一实施例中，所述显示面板包括：第一层；第二层，设置于所述第一层上并用于与所述第一层共同显示一影像；以及触控层，设置于所述第二层上并用于感测作用于所述显示面板上的信号。
于一实施例中，所述具有指纹辨识功能的显示装置进一步包括：偏光片，设置于所述超声波指纹辨识模块上；以及保护层，设置于所述偏光片上。
 有益效果
相较于现有技术，本实施例之具有指纹辨识功能的显示装置中，由于所述超声波发生及接收单元设置于所述反射层的侧边，因此可以降低显示装置的厚度。再者，由于所述多个微晶颗粒分布的区域对应至所述显示面板的显示区，因此可以达到全屏化的设计。
 附图说明
图1显示根据本揭示一实施例之超声波指纹辨识模块的侧视图。
图2显示根据本揭示一实施例之具有指纹辨识功能的显示装置的上视图。
图3显示所述超声波发生及接收单元产生的超声波经由一个微晶颗粒反射的示意图。
图4显示所述超声波发生及接收单元产生的超声波经由多个微晶颗粒反射的示意图。
图5显示微晶颗粒所反射的超声波经由一指纹反射的示意图。
图6显示根据本揭示另一实施例之超声波指纹辨识模块的侧视图。
图7显示根据本揭示另一实施例之具有指纹辨识功能的显示装置的上视图。
图8显示所述超声波发生及接收单元产生的超声波经由一个微晶颗粒反射的示意图。
图9显示所述超声波发生及接收单元产生的超声波经由多个微晶颗粒反射的示意图。
图10显示微晶颗粒所反射的超声波经由一指纹反射的示意图。
图11显示根据本揭示又一实施例之具有指纹辨识功能的显示装置的侧视图。
 本发明的实施方式
以下各实施例的说明是参考附加的图式，用以例示本揭示可用以实施的特定实施例。
请参阅图1以及图2，图1显示根据本揭示一实施例之超声波指纹辨识模块的侧视图。图2显示根据本揭示一实施例之具有指纹辨识功能的显示装置的上视图。
所述具有指纹辨识功能的显示装置包括一显示面板10以及所述超声波指纹辨识模块20。
所述显示面板10具有一显示区100以及一非显示区102。
所述超声波指纹辨识模块20包括一基板200、一反射层202、多个微晶颗粒（晶粒）204以及至少一超声波发生及接收单元206。所述超声波指纹辨识模块20设置于所述具有指纹辨识功能的显示装置的上表面的内部。
所述反射层202设置于所述基板200上。所述反射层202可以为一透明层且可以由有机材料制成。所述有机材料可以为亚克力系有机材料。
所述多个微晶颗粒204分布且形成于所述反射层202中。所述多个微晶颗粒204分布的区域对应至所述显示面板10的显示区100。每一所述多个微晶颗粒204的直径范围为0.01微米至3微米之间。
要说明的是，所述多个微晶颗粒204可以由但不限于玻璃制成。所述多个微晶颗粒204还可以根据需求由其他材料制成。
所述至少一超声波发生及接收单元206设置于所述反射层202的至少一侧边且对应至所述显示面板10的非显示区102。所述至少一超声波发生及接收单元206用于产生超声波以及接收超声波。
所述多个微晶颗粒204的排列可以为规律排列或不规律排列。举例来说，随着与所述至少一超声波发生及接收单元206的距离越远，所述多个微晶颗粒204的数量递增。或者，随着与所述至少一超声波发生及接收单元206的距离越远，所述多个微晶颗粒204的数量递减。
请参阅图1至图5，图3显示所述超声波发生及接收单元206产生的超声波经由一个微晶颗粒204反射的示意图。图4显示所述超声波发生及接收单元206产生的超声波经由多个微晶颗粒204反射的示意图。图5显示微晶颗粒204所反射的超声波经由一指纹30反射的示意图。
如图3及图4所示，当所述超声波发生及接收单元206产生的超声波40在所述反射层202（图1）中传播时，部分超声波40遇到所述微晶颗粒204时会反射到所述显示面板10（图2）的上表面。由于所述显示面板10的显示区100（图2）对应至所述多个微晶颗粒204，因此所述多个微晶颗粒204反射的超声波42会到达所述显示面板10（图2）的整个上表面，进而在所述显示面板10（图2）的整个上表面形成超声波阵列。如图5所示，当有手指30触摸所述显示面板10（图2）时，手指30反射的超声波44会有部分经由所述多个微晶颗粒204反射，所述多个微晶颗粒204反射的超声波46会有部分回到所述超声波发生及接收单元206，通过信号处理形成反馈的指纹信息，进而完成指纹识别。
本实施例之具有指纹辨识功能的显示装置中，由于所述超声波发生及接收单元206设置于所述反射层202的侧边，因此可以降低显示装置的厚度。再者，由于所述多个微晶颗粒204分布的区域对应至所述显示面板10的显示区100，因此可以达到全屏化的设计。
请参阅图6以及图7，图6显示根据本揭示另一实施例之超声波指纹辨识模块的侧视图。图7显示根据本揭示另一实施例之具有指纹辨识功能的显示装置的上视图。
所述具有指纹辨识功能的显示装置包括一显示面板50以及所述超声波指纹辨识模块60。
所述显示面板50具有一显示区500以及一非显示区502。
所述超声波指纹辨识模块60包括一基板600、一反射层602、多个微晶颗粒604以及多个超声波发生及接收单元606。所述超声波指纹辨识模块60设置于所述具有指纹辨识功能的显示装置的上表面的内部。
所述反射层602设置于所述基板600上。所述反射层602可以为一透明层且可以由有机材料制成。所述有机材料可以为亚克力系有机材料。
所述多个微晶颗粒604分布且形成于所述反射层602中。所述多个微晶颗粒604分布的区域对应至所述显示面板50的显示区500。每一所述多个微晶颗粒604的直径范围为0.01微米至3微米之间。
要说明的是，所述多个微晶颗粒604可以由但不限于玻璃制成。所述多个微晶颗粒604还可以根据需求由其他材料制成。
本实施例之具有指纹辨识功能的显示装置与图2实施例之具有指纹辨识功能的显示装置的差异在于本实施例之具有指纹辨识功能的显示装置包括多个超声波发生及接收单元606设置于所述反射层602的两侧边。所述多个超声波发生及接收单元606对应至所述显示面板50的非显示区502。所述多个超声波发生及接收单元606用于产生超声波以及接收超声波。
所述多个微晶颗粒604的排列可以为规律排列或不规律排列。举例来说，随着与所述至少一超声波发生及接收单元606的距离越远，所述多个微晶颗粒604的数量递增。或者，随着与所述至少一超声波发生及接收单元606的距离越远，所述多个微晶颗粒604的数量递减。
请参阅图6至图10，图8显示所述超声波发生及接收单元606产生的超声波经由一个微晶颗粒604反射的示意图。图9显示所述超声波发生及接收单元606产生的超声波经由多个微晶颗粒604反射的示意图。图10显示微晶颗粒604所反射的超声波经由一指纹70反射的示意图。
如图8及图9所示，当所述超声波发生及接收单元606产生的超声波80在所述反射层602（图6）中传播时，部分超声波80遇到所述微晶颗粒604时会反射到所述显示面板50（图7）的上表面。由于所述显示面板50的显示区500（图7）对应至所述多个微晶颗粒604，因此所述多个微晶颗粒604反射的超声波82会到达所述显示面板10（图7）的整个上表面，进而在所述显示面板10（图7）的整个上表面形成超声波阵列。如图10所示，当有手指70触摸所述显示面板10（图7）时，手指70反射的超声波84会有部分经由所述多个微晶颗粒604反射，所述多个微晶颗粒604反射的超声波86会有部分回到所述超声波发生及接收单元606，通过信号处理形成反馈的指纹信息，进而完成指纹识别。
本实施例之具有指纹辨识功能的显示装置中，由于所述超声波发生及接收单元606设置于所述反射层602的两侧边，因此可以降低显示装置的厚度。再者，由于所述多个微晶颗粒604分布的区域对应至所述显示面板50的显示区500，因此可以达到全屏化的设计。
请参阅图11，图11显示根据本揭示又一实施例之具有指纹辨识功能的显示装置的侧视图。
所述具有指纹辨识功能的显示装置包括一显示面板90以及一超声波指纹辨识模块92。
所述超声波指纹辨识模块92设置于所述显示面板90上。图2之超声波指纹辨识模块20是设置于所述具有指纹辨识功能的显示装置的上表面的内部。图7之超声波指纹辨识模块60也是设置于所述具有指纹辨识功能的显示装置的上表面的内部。本实施例之超声波指纹辨识模块92是内嵌在所述显示面板90中。
所述显示面板90包括一第一层900、一第二层902以及一触控层904。
所述第二层902设置于所述第一层900上并用于与所述第一层900共同显示一影像。
于一实施例中，当所述显示面板90为液晶显示面板时，所述第一层900为阵列基板，所述第二层902为彩色滤光片。
于另一实施例中，当所述显示面板90为有机发光二极管（Organic Light Emitting Diode，OLED）显示面板时，所述第一层900为阵列基板，所述第二层902为发光层。
所述触控层904设置于所述第二层902上并用于感测作用于所述显示面板上的信号，所述信号可以为一触碰信号或一悬浮信号。
所述超声波指纹辨识模块92设置于所述触控层904上。所述超声波指纹辨识模块92的结构可参阅图1及图6的相关描述。由于所述超声波指纹辨识模块92设置于所述触控层904上，因此图1及图6的超声波指纹辨识模块20及60可以分别省略基板200及600。
此外，所述具有指纹辨识功能的显示装置进一步包括一偏光片94以及一保护层96。
所述偏光片94设置于所述超声波指纹辨识模块92上。
所述保护层96设置于所述偏光片94上。
本实施例之具有指纹辨识功能的显示装置中，由于所述超声波发生及接收单元设置于所述反射层的侧边，因此可以降低显示装置的厚度。再者，由于所述多个微晶颗粒分布的区域对应至所述显示面板的显示区，因此可以达到全屏化的设计。
综上所述，虽然本揭示已以优选实施例揭露如上，但上述优选实施例并非用以限制本揭示，本领域的普通技术人员，在不脱离本揭示的精神和范围内，均可作各种更动与润饰，因此本揭示的保护范围以权利要求界定的范围为准。

Claims (15)

  1. 一种具有指纹辨识功能的显示装置，包括：
    显示面板，具有显示区以及非显示区；以及
    超声波指纹辨识模块，设置于所述具有指纹辨识功能的显示装置的上表面的内部并包括：
    基板；
    反射层，设置于所述基板上；
    多个微晶颗粒，分布于所述反射层中；以及
    至少一超声波发生及接收单元，设置于所述反射层的至少一侧边，
    其中所述多个微晶颗粒分布的区域对应至所述显示面板的所述显示区，每一所述多个微晶颗粒的直径范围为0.01微米至3微米之间。
  2. 根据权利要求1所述的具有指纹辨识功能的显示装置，其中所述至少一超声波发生及接收单元对应至所述显示面板的所述非显示区。
  3. 根据权利要求1所述的具有指纹辨识功能的显示装置，包括多个超声波发生及接收单元设置于所述反射层的两侧边。
  4. 根据权利要求1所述的具有指纹辨识功能的显示装置，其中随着与所述至少一超声波发生及接收单元的距离越远，所述多个微晶颗粒的数量递增。
  5. 根据权利要求1所述的具有指纹辨识功能的显示装置，其中随着与所述至少一超声波发生及接收单元的距离越远，所述多个微晶颗粒的数量递减。
  6. 一种具有指纹辨识功能的显示装置，包括：
    显示面板，具有显示区以及非显示区；以及
    超声波指纹辨识模块，设置于所述具有指纹辨识功能的显示装置的上表面的内部并包括：
    基板；
    反射层，设置于所述基板上；
    多个微晶颗粒，分布于所述反射层中；以及
    至少一超声波发生及接收单元，设置于所述反射层的至少一侧边。
  7. 根据权利要求6所述的具有指纹辨识功能的显示装置，其中所述多个微晶颗粒分布的区域对应至所述显示面板的所述显示区。
  8. 根据权利要求6所述的具有指纹辨识功能的显示装置，其中每一所述多个微晶颗粒的直径范围为0.01微米至3微米之间。
  9. 根据权利要求6所述的具有指纹辨识功能的显示装置，其中所述至少一超声波发生及接收单元对应至所述显示面板的所述非显示区。
  10. 根据权利要求6所述的具有指纹辨识功能的显示装置，包括多个超声波发生及接收单元设置于所述反射层的两侧边。
  11. 根据权利要求6所述的具有指纹辨识功能的显示装置，其中随着与所述至少一超声波发生及接收单元的距离越远，所述多个微晶颗粒的数量递增。
  12. 根据权利要求6所述的具有指纹辨识功能的显示装置，其中随着与所述至少一超声波发生及接收单元的距离越远，所述多个微晶颗粒的数量递减。
  13. 一种具有指纹辨识功能的显示装置，包括：
    显示面板，具有显示区以及非显示区；以及
    超声波指纹辨识模块，内嵌在所述显示面板中并包括：
    反射层，设置于所述显示面板中；
    多个微晶颗粒，分布于所述反射层中；以及
    至少一超声波发生及接收单元，设置于所述反射层的至少一侧边。
  14. 根据权利要求13所述的具有指纹辨识功能的显示装置，其中所述显示面板包括：
    第一层；
    第二层，设置于所述第一层上并用于与所述第一层共同显示一影像；以及
    触控层，设置于所述第二层上并用于感测作用于所述显示面板上的信号。
  15. 根据权利要求13所述的具有指纹辨识功能的显示装置，进一步包括：
    偏光片，设置于所述超声波指纹辨识模块上；以及
    保护层，设置于所述偏光片上。
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