WO2020155321A1 - Oled 显示屏模组 - Google Patents

Oled 显示屏模组 Download PDF

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Publication number
WO2020155321A1
WO2020155321A1 PCT/CN2019/078136 CN2019078136W WO2020155321A1 WO 2020155321 A1 WO2020155321 A1 WO 2020155321A1 CN 2019078136 W CN2019078136 W CN 2019078136W WO 2020155321 A1 WO2020155321 A1 WO 2020155321A1
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WO
WIPO (PCT)
Prior art keywords
oled display
ultrasonic
module
layer
adhesive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/078136
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English (en)
French (fr)
Inventor
占栋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Application filed by Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority to US16/478,044 priority Critical patent/US11315356B2/en
Publication of WO2020155321A1 publication Critical patent/WO2020155321A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
    • 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
    • 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
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • 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
    • 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
    • H10K59/80—Constructional details
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light

Definitions

  • This application relates to the field of display technology, and in particular to an OLED display module.
  • optical fingerprint unlocking has the following problems: the security is not high, and the biological living body cannot be distinguished in the face of forged fingerprint information. This cannot meet the needs of today's users who pay attention to protecting personal private information and unlocking tools.
  • optical fingerprint recognition has requirements for optical signals, so the cleanliness of the fingers, the optical design of the display screen (reflectivity, transmittance, brightness), etc., will affect the recognition effect, and the user experience is not good.
  • the existing OLED display module has poor signal anti-interference and strong attenuation during signal propagation when using the under-screen recognition technology, which further affects the recognition success rate of the under-screen recognition module.
  • the existing OLED display module when using the under-screen recognition technology, has poor signal anti-interference and strong attenuation during signal propagation, which further affects the recognition success rate of the under-screen recognition module.
  • This application provides an OLED display module, which can improve the ultrasonic conduction efficiency of the under-screen ultrasonic identification module, so as to solve the problem of the existing OLED display module, because the under-screen identification technology has poor signal immunity and signal propagation The attenuation in the process is strong, which further affects the recognition success rate of the recognition module under the screen.
  • the application provides an OLED display module, which includes a cover plate, a first adhesive, a circular polarizer, an OLED display panel, and an ultrasonic fingerprint recognition module arranged in order from top to bottom.
  • the ultrasonic fingerprint recognition module is located on the OLED display.
  • both sides of the OLED display module are provided with silencing layers, both sides of the ultrasonic fingerprint identification module are provided with the silencing layers, which are not in contact with the ultrasonic fingerprint identification module
  • the lower surface of part of the OLED display panel is provided with the sound-absorbing layer;
  • the first adhesive is OCA glue (solid transparent optical glue),
  • the sound-absorbing layer is a sound-absorbing tile material, and the sound-absorbing tile material includes Any one of styrene butadiene rubber, polyurethane, glass fiber, polysulfide rubber and silica gel.
  • the ultrasonic fingerprint identification module includes an ultrasonic identification sensor, and the ultrasonic identification sensor can emit ultrasonic waves of a certain frequency.
  • the impedance of the sound-absorbing layer matches the frequency corresponding to the ultrasonic waves emitted by the ultrasonic identification sensor. .
  • the bottom surface of the OLED display panel is attached to the top surface of the ultrasonic fingerprint identification module, and both sides of the ultrasonic fingerprint identification module pass through the second
  • the adhesive is embedded in the back plate and the inside of the first foam layer, and the bottom surface of the ultrasonic fingerprint identification module is attached to the second foam layer.
  • the upper and lower surfaces of the first foam layer and the upper and lower surfaces of the second foam layer are both provided with the muffler layer, and the first foam layer Both the cotton layer and the second foam layer are fully closed-cell foams.
  • the second adhesive includes any one of ultraviolet curing adhesive, rubber, silica gel, and glass adhesive; the second adhesive has an inverted trapezoid shape, so The contact angle between the colloid of the second adhesive and the lower surface of the OLED display panel is greater than 90°.
  • a concavo-convex structure is provided on the contact portion between the two sides of the ultrasonic fingerprint identification module and the colloid of the second adhesive.
  • the OLED display panel includes a TFT array substrate, an OLED light-emitting layer, an anode metal layer, a cathode metal layer, and an encapsulation film layer
  • the ultrasonic fingerprint recognition module includes ultrasonic recognition
  • the sensor, the ultrasonic identification sensor spatially overlaps vertically with the upper and lower positions of the planarization layer in the TFT array substrate.
  • the sensing surface of the ultrasonic identification sensor is a full-surface type, and the ultrasonic identification sensor is attached to the lower surface of the OLED display panel, and two adjacent The ultrasonic identification sensors are bonded through the sound-absorbing layer.
  • the application also provides an OLED display module, which includes a cover plate, a first adhesive, a circular polarizer, an OLED display panel, and an ultrasonic fingerprint recognition module arranged in order from top to bottom.
  • the ultrasonic fingerprint recognition module is located in the OLED
  • the lower surface of the display panel; both sides of the OLED display module are provided with sound-absorbing layers, and the ultrasonic fingerprint identification module is provided with the sound-absorbing layers on both sides, which are not in contact with the ultrasonic fingerprint identification module
  • the lower surface of part of the OLED display panel is provided with the sound-absorbing layer.
  • the ultrasonic fingerprint identification module includes an ultrasonic identification sensor, and the ultrasonic identification sensor can emit ultrasonic waves of a certain frequency.
  • the impedance of the sound-absorbing layer matches the frequency corresponding to the ultrasonic waves emitted by the ultrasonic identification sensor. .
  • the bottom surface of the OLED display panel is attached to the top surface of the ultrasonic fingerprint identification module, and both sides of the ultrasonic fingerprint identification module pass through the second
  • the adhesive is embedded in the back plate and the inside of the first foam layer, and the bottom surface of the ultrasonic fingerprint identification module is attached to the second foam layer.
  • the upper and lower surfaces of the first foam layer and the upper and lower surfaces of the second foam layer are both provided with the muffler layer, and the first foam layer Both the cotton layer and the second foam layer are fully closed-cell foams.
  • the second adhesive includes any one of ultraviolet curing adhesive, rubber, silica gel, and glass adhesive; the second adhesive has an inverted trapezoid shape, so The contact angle between the colloid of the second adhesive and the lower surface of the OLED display panel is greater than 90°.
  • a concavo-convex structure is provided on the contact portion between the two sides of the ultrasonic fingerprint identification module and the colloid of the second adhesive.
  • the OLED display panel includes a TFT array substrate, an OLED light-emitting layer, an anode metal layer, a cathode metal layer, and an encapsulation film layer
  • the ultrasonic fingerprint recognition module includes ultrasonic recognition
  • the sensor, the ultrasonic identification sensor spatially overlaps vertically with the upper and lower positions of the planarization layer in the TFT array substrate.
  • the sensing surface of the ultrasonic identification sensor is a full-surface type, and the ultrasonic identification sensor is attached to the lower surface of the OLED display panel, and two adjacent The ultrasonic identification sensors are bonded through the sound-absorbing layer.
  • the OLED display module provided by this application has sound-absorbing layers on both sides of the ultrasonic fingerprint identification module and the OLED display module, which enhances the resistance of the ultrasonic fingerprint identification module.
  • the signal interference capability further improves the transmission efficiency of the ultrasonic fingerprint recognition module.
  • FIG. 1 is a schematic cross-sectional structure diagram of Embodiment 1 of an OLED display module of this application.
  • Embodiment 2 is a schematic partial cross-sectional structure diagram of Embodiment 2 of the OLED display module of this application.
  • FIG. 3 is a schematic cross-sectional structure diagram of Embodiment 3 of the OLED display module of this application.
  • This application is directed to the existing OLED display module. Due to the poor signal anti-interference performance and strong attenuation during signal propagation when using the under-screen recognition technology, the technical problem that further affects the recognition success rate of the under-screen recognition module, this implementation Examples can solve this defect.
  • FIG. 1 it is a schematic cross-sectional structure diagram of Embodiment 1 of an OLED display module of this application.
  • the present application provides an OLED display module, which includes a cover 101, a first adhesive 102, a circular polarizer 103, an OLED display panel 104, and an ultrasonic fingerprint recognition module 105 arranged sequentially from top to bottom.
  • the identification module 105 is located on the lower surface of the OLED display panel 104;
  • the two sides of the OLED display module are provided with sound-absorbing layers 106, and the two sides of the ultrasonic fingerprint identification module 105 are provided with the sound-absorbing layers 106, which are not in contact with the ultrasonic fingerprint identification module.
  • Part of the lower surface 104 of the OLED display panel is provided with the sound-absorbing layer 106.
  • the bottom surface of the OLED display panel 104 is attached to the top surface of the ultrasonic fingerprint identification module 105, and the two sides of the ultrasonic fingerprint identification module 105 are respectively embedded in the backplane 108 and the backplane through the second adhesive 107.
  • the bottom surface of the ultrasonic fingerprint identification module 105 is attached to the second foam layer 110.
  • the upper and lower surfaces of the first foam layer 109 and the upper and lower surfaces of the second foam layer 110 are both provided with the muffler layer 106, the first foam layer 109 and the second foam
  • the cotton layer 110 is a fully closed cell foam.
  • the first adhesive 102 is OCA glue (solid transparent optical glue).
  • the sound-absorbing layer 106 may be a sound-absorbing tile material used in military submarines, such as soft porous materials such as styrene butadiene rubber, polyurethane, glass fiber, polysulfide rubber, and silica gel.
  • the ultrasonic fingerprint identification module 105 includes an ultrasonic identification sensor, which can emit ultrasonic waves of a certain frequency. The impedance of the sound-absorbing layer 106 matches the frequency corresponding to the ultrasonic waves emitted by the ultrasonic identification sensor.
  • the second adhesive 107 includes any one of ultraviolet curing glue, rubber, silica gel, and glass glue; the colloid of the second adhesive 107 is in an inverted trapezoid shape, and the colloid of the second adhesive 107 is The contact angle of the lower surface 104 of the OLED display panel is greater than 90°.
  • the contact portion between the two sides of the ultrasonic fingerprint identification module 105 and the colloid of the second adhesive 107 is provided with a concave-convex structure.
  • the ultrasonic fingerprint identification module 105 in the first embodiment of the OLED display module of the present application adopts a modular module unit.
  • the ultrasonic fingerprint identification module 105 is embedded on the back of the display module and is attached to the display module by sealing glue.
  • On the lower surface of the OLED display panel 104 bubbles and foreign objects are not allowed between the ultrasonic fingerprint recognition module 105 and the OLED display panel 104, and the second adhesive 107 is used for sealing under a negative pressure environment.
  • the colloid of the second adhesive 107 has an inverted trapezoid design to ensure that the contact angle with the OLED display panel 104 is greater than 90°, and at the same time, a concave-convex structure 111 is left in the part that contacts the colloid of the second adhesive 107.
  • the design can protect the OLED display panel 104 from the puncture stress from the back of the ultrasonic fingerprint identification module 105, increase the bonding strength, and at the same time can realize the connection between the ultrasonic fingerprint identification module 105 and the OLED display panel 104. No air layer remains on the interface between.
  • the first foam layer 109 adopting a fully closed cell foaming method will also produce damping and filtering effects on the interference sound waves from the back of the display screen (the middle frame of the mobile phone).
  • a second foam layer 110 is added to the back of the ultrasonic fingerprint identification module 105.
  • the side of the display module in the first embodiment of the OLED display module of the present application, the lower surface of the OLED display panel 104, the side of the ultrasonic fingerprint recognition module 105, the first foam layer 109 and the The upper and lower surfaces of the second foam layer 110 have been coated or attached with sound-absorbing materials.
  • the main reason is that ultrasonic waves can be reflected and conducted in different directions inside the display module, including the external (display external environment, the side of the mobile phone and the middle frame, etc.) conduct the internal ultrasonic signal, so as to the fingerprint recognition module signal (ultrasonic )’S launch, reception, and recognition.
  • the sound-absorbing layer 106 can filter out interference signals, and absorb and muffle unnecessary ultrasonic waves inside the display module.
  • Sound-absorbing layer 106 When a sound wave enters the sound-absorbing layer 106, a part of the sound energy is rubbed in the pores of the porous material and converted into heat and is dissipated, so that the sound wave passing through the muffler is weakened. Muffling generally requires impedance matching, allowing sound to enter a certain medium to absorb sound by damping. Sound-absorbing materials generally include sound-absorbing sponge, micro-perforated structure, etc. The commonly used structure is the built-in sound-absorbing sponge structure of the wedge, and other structures with damped resonant cavity can also be used for sound absorption.
  • FIG. 2 it is a schematic partial cross-sectional structure diagram of Embodiment 2 of the OLED display module of this application.
  • the ultrasonic fingerprint recognition module 25 is attached to the lower surface of the OLED display panel at a different position; wherein, the OLED display panel includes a TFT array substrate 20, an OLED light emitting layer 21, and an anode.
  • the TFT array substrate 20 includes a flexible substrate 201, a buffer layer 202, an active layer 203, a gate insulating layer 204, a gate metal layer 205, an interlayer insulating layer 206, a source and drain metal layer 207, and a planarization Layer 208 and pixel defining layer 209; wherein the source and drain metal layer 207 communicates with the active layer through the first through hole 210 and the second through hole 211, and the anode metal layer 23 through the third through hole 212 communicates with the source and drain metal layer 207.
  • the attachment position of the top surface of the ultrasonic identification sensor and the bottom surface of the OLED display panel avoids the pixel opening area of the OLED display panel, which can increase the ultrasonic signal Conduction inside the OLED display panel prevents signal dispersion and weakening.
  • FIG. 3 it is a schematic cross-sectional structure diagram of Embodiment 3 of the OLED display module of this application. It differs from the first and second embodiments only in the binding method of the ultrasonic fingerprint identification module 31; wherein, the ultrasonic fingerprint identification module 31 includes an ultrasonic identification sensor 311, and the ultrasonic identification sensor 311 The sensing surface of is a full-surface type, the ultrasonic identification sensor 311 is attached to the lower surface of the OLED display panel 21, and two adjacent ultrasonic identification sensors 311 are bonded by a sound-absorbing layer 32.
  • the OLED display module provided by this application has sound-absorbing layers on both sides of the ultrasonic fingerprint identification module and the OLED display module, which enhances the resistance of the ultrasonic fingerprint identification module.
  • the signal interference capability further improves the transmission efficiency of the ultrasonic fingerprint recognition module.

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
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Abstract

一种OLED显示屏模组，包括盖板、第一胶粘剂、圆偏光片、OLED显示面板以及超声波指纹识别模块，所述超声波指纹识别模块位于所述OLED显示面板的下表面；所述OLED显示屏模组的两侧边设置有消声层，所述超声波指纹识别模块的两侧边设置有所述消声层，未与所述超声波指纹识别模块接触的部分所述OLED显示面板的下表面设置有所述消声层。

Description

OLED显示屏模组 技术领域
本申请涉及显示技术领域，尤其涉及一种OLED显示屏模组。
 背景技术
目前为了实现高的屏占比，一般将Home健虚拟化、屏幕唤醒解锁放置于显示区域，采用光学屏下指纹解锁的方法。但是光学指纹解锁具有下述问题：安全性不高，面对伪造的指纹信息，无法进行生物性活体判别。这不能满足当今用户注重保护个人隐私信息、解锁工具安全的需求。另外光学指纹识别对于光学信号有要求，所以手指的干净程度、显示屏整机的光学设计（反射率、透过率、亮度）等等是会影响识别效果的，用户体验不佳。
综上所述，现有的OLED显示屏模组，由于在运用屏下识别技术时，信号抗干扰性差且信号传播过程中衰减性强，进一步影响屏下识别模块的识别成功率。
 技术问题
现有的OLED显示屏模组，在运用屏下识别技术时，信号抗干扰性差且信号传播过程中衰减性强，进一步影响屏下识别模块的识别成功率。
 技术解决方案
本申请提供一种OLED显示屏模组，能够提升屏下超声波识别模块的超声波传导效率，以解决现有的OLED显示屏模组，由于在运用屏下识别技术时，信号抗干扰性差且信号传播过程中衰减性强，进一步影响屏下识别模块的识别成功率的技术问题。
为解决上述问题，本申请提供的技术方案如下：
本申请提供一种OLED显示屏模组，包括由上到下依次设置的盖板、第一胶粘剂、圆偏光片、OLED显示面板以及超声波指纹识别模块，所述超声波指纹识别模块位于所述OLED显示面板的下表面；所述OLED显示屏模组的两侧边设置有消声层，所述超声波指纹识别模块的两侧边设置有所述消声层，未与所述超声波指纹识别模块接触的部分所述OLED显示面板的下表面设置有所述消声层；所述第一胶粘剂为OCA胶（固态透明光学胶），所述消声层为消声瓦材料，所述消声瓦材料包括丁苯橡胶、聚氨脂、玻璃纤维、聚硫橡胶以及硅胶中的任意一种。
在本申请实施例所提供的OLED显示屏模组中，所述超声波指纹识别模块包括超声波识别传感器，所述超声波识别传感器能够发射一定频率的超声波。
在本申请实施例所提供的OLED显示屏模组中，所述消音层的阻抗匹配所述超声波识别传感器发出的超声波对应的频率。。
在本申请实施例所提供的OLED显示屏模组中，所述OLED显示面板的下表面与所述超声波指纹识别模块的顶面贴附，所述超声波指纹识别模块的两侧边分别通过第二胶粘剂内嵌于背板以及第一泡棉层的内部，所述超声波指纹识别模块的底面与第二泡棉层贴附。
在本申请实施例所提供的OLED显示屏模组中，所述第一泡棉层的上下表面以及所述第二泡棉层的上下表面均设置有所述消声层，所述第一泡棉层以及所述第二泡棉层均为全闭孔的发泡体。
在本申请实施例所提供的OLED显示屏模组中，所述第二胶粘剂包括紫外光固化胶、橡胶、硅胶以及玻璃胶中的任意一种；所述第二胶粘剂的胶体呈倒梯形，所述第二胶粘剂的胶体与所述OLED显示面板的下表面的接触角大于90°。
在本申请实施例所提供的OLED显示屏模组中，所述超声波指纹识别模块的两侧边与所述第二胶粘剂的胶体之间的接触部位上设置有凹凸结构。
在本申请实施例所提供的OLED显示屏模组中，所述OLED显示面板包括TFT阵列基板、OLED发光层、阳极金属层、阴极金属层以及封装膜层，所述超声波指纹识别模块包括超声波识别传感器，所述超声波识别传感器在空间上与所述TFT阵列基板中的平坦化层上下位置关系垂直重叠。
在本申请实施例所提供的OLED显示屏模组中，所述超声波识别传感器的感应面为整面式，所述超声波识别传感器贴附于所述OLED显示面板的下表面，相邻两所述超声波识别传感器之间通过所述消音层粘结。
本申请还提供一种OLED显示屏模组，包括由上到下依次设置的盖板、第一胶粘剂、圆偏光片、OLED显示面板以及超声波指纹识别模块，所述超声波指纹识别模块位于所述OLED显示面板的下表面；所述OLED显示屏模组的两侧边设置有消声层，所述超声波指纹识别模块的两侧边设置有所述消声层，未与所述超声波指纹识别模块接触的部分所述OLED显示面板的下表面设置有所述消声层。
在本申请实施例所提供的OLED显示屏模组中，所述超声波指纹识别模块包括超声波识别传感器，所述超声波识别传感器能够发射一定频率的超声波。
在本申请实施例所提供的OLED显示屏模组中，所述消音层的阻抗匹配所述超声波识别传感器发出的超声波对应的频率。。
在本申请实施例所提供的OLED显示屏模组中，所述OLED显示面板的下表面与所述超声波指纹识别模块的顶面贴附，所述超声波指纹识别模块的两侧边分别通过第二胶粘剂内嵌于背板以及第一泡棉层的内部，所述超声波指纹识别模块的底面与第二泡棉层贴附。
在本申请实施例所提供的OLED显示屏模组中，所述第一泡棉层的上下表面以及所述第二泡棉层的上下表面均设置有所述消声层，所述第一泡棉层以及所述第二泡棉层均为全闭孔的发泡体。
在本申请实施例所提供的OLED显示屏模组中，所述第二胶粘剂包括紫外光固化胶、橡胶、硅胶以及玻璃胶中的任意一种；所述第二胶粘剂的胶体呈倒梯形，所述第二胶粘剂的胶体与所述OLED显示面板的下表面的接触角大于90°。
在本申请实施例所提供的OLED显示屏模组中，所述超声波指纹识别模块的两侧边与所述第二胶粘剂的胶体之间的接触部位上设置有凹凸结构。
在本申请实施例所提供的OLED显示屏模组中，所述OLED显示面板包括TFT阵列基板、OLED发光层、阳极金属层、阴极金属层以及封装膜层，所述超声波指纹识别模块包括超声波识别传感器，所述超声波识别传感器在空间上与所述TFT阵列基板中的平坦化层上下位置关系垂直重叠。
在本申请实施例所提供的OLED显示屏模组中，所述超声波识别传感器的感应面为整面式，所述超声波识别传感器贴附于所述OLED显示面板的下表面，相邻两所述超声波识别传感器之间通过所述消音层粘结。
 有益效果
本申请的有益效果为：本申请所提供的OLED显示屏模组，在超声波指纹识别模块的两侧边以及OLED显示屏模组的两侧边上设置消音层，增强了超声波指纹识别模块的抗信号干扰能力，进一步提升了超声波指纹识别模块的传导效率。
 附图说明
为了更清楚地说明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单介绍，显而易见地，下面描述中的附图仅仅是申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请OLED显示屏模组实施例一截面结构示意图。
图2为本申请OLED显示屏模组实施例二局部截面结构示意图。
图3为本申请OLED显示屏模组实施例三截面结构示意图。
 本发明的实施方式
以下各实施例的说明是参考附加的图示，用以例示本申请可用以实施的特定实施例。本申请所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本申请，而非用以限制本申请。在图中，结构相似的单元是用以相同标号表示。
本申请针对现有的OLED显示屏模组，由于在运用屏下识别技术时，信号抗干扰性差且信号传播过程中衰减性强，进一步影响屏下识别模块的识别成功率的技术问题，本实施例能够解决该缺陷。
实施例一：
如图1所示，为本申请OLED显示屏模组实施例一截面结构示意图。其中，本申请提供一种OLED显示屏模组，包括由上到下依次设置的盖板101、第一胶粘剂102、圆偏光片103、OLED显示面板104以及超声波指纹识别模块105，所述超声波指纹识别模块105位于所述OLED显示面板104的下表面；
其中，所述OLED显示屏模组的两侧边设置有消声层106，所述超声波指纹识别模块105的两侧边设置有所述消声层106，未与所述超声波指纹识别模块接触的部分所述OLED显示面板的下表面104设置有所述消声层106。
具体的，所述OLED显示面板104的下表面与所述超声波指纹识别模块105的顶面贴附，所述超声波指纹识别模块105的两侧边分别通过第二胶粘剂107内嵌于背板108以及第一泡棉层109的内部，所述超声波指纹识别模块105的底面与第二泡棉层110贴附。
具体的，所述第一泡棉层109的上下表面以及所述第二泡棉层110的上下表面均设置有所述消声层106，所述第一泡棉层109以及所述第二泡棉层110均为全闭孔的发泡体。
其中，所述第一胶粘剂102为OCA胶（固态透明光学胶）。所述消声层106可以采用军用潜艇所采用的消声瓦材料，比喻丁苯橡胶、聚氨脂、玻璃纤维、聚硫橡胶、硅胶等柔软的多孔材料。所述超声波指纹识别模块105包括超声波识别传感器，所述超声波识别传感器能够发射一定频率的超声波。所述消音层106的阻抗匹配所述超声波识别传感器发出的超声波对应的频率。
具体的，所述第二胶粘剂107包括紫外光固化胶、橡胶、硅胶以及玻璃胶中的任意一种；所述第二胶粘剂107的胶体呈倒梯形，所述第二胶粘剂107的胶体与所述OLED显示面板的下表面104的接触角大于90°。
具体的，所述超声波指纹识别模块105的两侧边与所述第二胶粘剂107的胶体之间的接触部位上设置有凹凸结构。
本申请OLED显示屏模组实施例一的所述超声波指纹识别模块105采用模块式的模组单元，所述超声波指纹识别模块105内嵌于显示模组背部，采用封胶的方法贴附于所述OLED显示面板104的下表面，所述超声波指纹识别模块105与所述OLED显示面板104之间不允许有气泡和异物，在负压的环境下使用所述第二胶粘剂107进行封胶。所述第二胶粘剂107的胶体呈现倒梯形设计，保证与所述OLED显示面板104的接触角大于90°，同时在与所述第二胶粘剂107的胶体接触的部位留有凹凸结构111，这样的设计能够保护所述OLED显示面板104不会受到来自所述超声波指纹识别模块105背部的刺伤应力，增加粘结强度，同时也能实现所述超声波指纹识别模块105与所述OLED显示面板104之间的界面上不会残留空气层。在保证缓冲性能良好的前提下，采用全闭孔发泡的方式的所述第一泡棉层109对于来自显示屏背部（手机中框）的干扰声波也会产生阻尼和过滤的效果。为了增加保护，在所述超声波指纹识别模块105的背部增加一层所述第二泡棉层110。
本申请OLED显示屏模组实施例一的显示模组的侧边、所述OLED显示面板104的下表面、所述超声波指纹识别模块105的侧边、所述第一泡棉层109以及所述第二泡棉层110的上下表面等部位均已经进行消声材料的涂布或者贴附。主要原因是超声波可以在显示屏模组内部不同方向上进行反射和传导，包括外部（显示屏外界环境、手机侧边和中框等）传导内部的超声波信号，从而对于指纹识别模块的信号（超声波）的发射、接受、识别产生影响。所述消音层106可以过滤掉干扰信号，对于显示屏模组内部不必要的超声波进行吸收和消声。当声波进入所述消音层106中时，一部分声能在多孔材料的孔隙中摩擦而转化成热能耗散掉，使通过消声器的声波减弱。消声一般是要求阻抗匹配，让声音进入某一介质利用阻尼把声音吸收。吸声材料一般有消声海绵、微穿孔结构等，常用的结构就是尖劈内置消声海绵结构，其他利用具有阻尼的共振腔结构也能很好的消声。
实施例二：
如图2所示，为本申请OLED显示屏模组实施例二局部截面结构示意图。其与实施例一的不同之处仅在于超声波指纹识别模块25与所述OLED显示面板的下表面的贴附位置不同；其中，所述OLED显示面板包括TFT阵列基板20、OLED发光层21、阳极金属层22、阴极金属层23以及封装膜层24；所述超声波指纹识别模块25包括超声波识别传感器，所述超声波识别传感器在空间上与所述TFT阵列基板20中的平坦化层208上下位置关系垂直重叠，即所述超声波识别传感器的顶面与所述OLED显示面板的下表面的贴附位置避开了所述OLED显示面板的像素开孔区域。
具体的，所述TFT阵列基板20包括柔性基板201、缓冲层202、有源层203、栅极绝缘层204、栅极金属层205、层间绝缘层206、源漏极金属层207、平坦化层208以及像素限定层209；其中，所述源漏极金属层207通过第一通孔210以及第二通孔211与所述有源层相连通，所述阳极金属层23通过第三通孔212与所述源漏极金属层207相连通。
本申请OLED显示屏模组实施例二将所述超声波识别传感器的顶面与所述OLED显示面板的下表面的贴附位置避开了所述OLED显示面板的像素开孔区域，能够增加超声波信号在所述OLED显示面板内部的传导，防止信号的弥散和减弱。
实施例三：
如图3所示，为本申请OLED显示屏模组实施例三截面结构示意图。其与实施例一以及实施例二的不同之处仅在于所述超声波指纹识别模块31的绑定方式的不同；其中，所述超声波指纹识别模块31包括超声波识别传感器311，所述超声波识别传感器311的感应面为整面式，所述超声波识别传感器311贴附于所述OLED显示面板21的下表面，相邻两所述超声波识别传感器311之间通过消音层32粘结。
本申请的有益效果为：本申请所提供的OLED显示屏模组，在超声波指纹识别模块的两侧边以及OLED显示屏模组的两侧边上设置消音层，增强了超声波指纹识别模块的抗信号干扰能力，进一步提升了超声波指纹识别模块的传导效率。
综上所述，虽然本申请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申请，本领域的普通技术人员，在不脱离本申请的精神和范围内，均可作各种更动与润饰，因此本申请的保护范围以权利要求界定的范围为准。

Claims (18)

  1. 一种OLED显示屏模组，其中，包括由上到下依次设置的盖板、第一胶粘剂、圆偏光片、OLED显示面板以及超声波指纹识别模块，所述超声波指纹识别模块位于所述OLED显示面板的下表面；所述OLED显示屏模组的两侧边设置有消声层，所述超声波指纹识别模块的两侧边设置有所述消声层，未与所述超声波指纹识别模块接触的部分所述OLED显示面板的下表面设置有所述消声层；所述第一胶粘剂为OCA胶（固态透明光学胶），所述消声层为消声瓦材料，所述消声瓦材料包括丁苯橡胶、聚氨脂、玻璃纤维、聚硫橡胶以及硅胶中的任意一种。
  2. 根据权利要求1所述的OLED显示屏模组，其中，所述超声波指纹识别模块包括超声波识别传感器，所述超声波识别传感器能够发射一定频率的超声波。
  3. 根据权利要求2所述的OLED显示屏模组，其中，所述消音层的阻抗匹配所述超声波识别传感器发出的超声波对应的频率。
  4. 根据权利要求1所述的OLED显示屏模组，其中，所述OLED显示面板的下表面与所述超声波指纹识别模块的顶面贴附，所述超声波指纹识别模块的两侧边分别通过第二胶粘剂内嵌于背板以及第一泡棉层的内部，所述超声波指纹识别模块的底面与第二泡棉层贴附。
  5. 根据权利要求4所述的OLED显示屏模组，其中，所述第一泡棉层的上下表面以及所述第二泡棉层的上下表面均设置有所述消声层，所述第一泡棉层以及所述第二泡棉层均为全闭孔的发泡体。
  6. 根据权利要求4所述的OLED显示屏模组，其中，所述第二胶粘剂包括紫外光固化胶、橡胶、硅胶以及玻璃胶中的任意一种；所述第二胶粘剂的胶体呈倒梯形，所述第二胶粘剂的胶体与所述OLED显示面板的下表面的接触角大于90°。
  7. 根据权利要求6所述的OLED显示屏模组，其中，所述超声波指纹识别模块的两侧边与所述第二胶粘剂的胶体之间的接触部位上设置有凹凸结构。
  8. 根据权利要求1所述的OLED显示屏模组，其中，所述OLED显示面板包括TFT阵列基板、OLED发光层、阳极金属层、阴极金属层以及封装膜层，所述超声波指纹识别模块包括超声波识别传感器，所述超声波识别传感器在空间上与所述TFT阵列基板中的平坦化层上下位置关系垂直重叠。
  9. 根据权利要求8所述的OLED显示屏模组，其中，所述超声波识别传感器的感应面为整面式，所述超声波识别传感器贴附于所述OLED显示面板的下表面，相邻两所述超声波识别传感器之间通过所述消音层粘结。
  10. 一种OLED显示屏模组，其中，包括由上到下依次设置的盖板、第一胶粘剂、圆偏光片、OLED显示面板以及超声波指纹识别模块，所述超声波指纹识别模块位于所述OLED显示面板的下表面；所述OLED显示屏模组的两侧边设置有消声层，所述超声波指纹识别模块的两侧边设置有所述消声层，未与所述超声波指纹识别模块接触的部分所述OLED显示面板的下表面设置有所述消声层。
  11. 根据权利要求10所述的OLED显示屏模组，其中，所述超声波指纹识别模块包括超声波识别传感器，所述超声波识别传感器能够发射一定频率的超声波。
  12. 根据权利要求11所述的OLED显示屏模组，其中，所述消音层的阻抗匹配所述超声波识别传感器发出的超声波对应的频率。
  13. 根据权利要求10所述的OLED显示屏模组，其中，所述OLED显示面板的下表面与所述超声波指纹识别模块的顶面贴附，所述超声波指纹识别模块的两侧边分别通过第二胶粘剂内嵌于背板以及第一泡棉层的内部，所述超声波指纹识别模块的底面与第二泡棉层贴附。
  14. 根据权利要求13所述的OLED显示屏模组，其中，所述第一泡棉层的上下表面以及所述第二泡棉层的上下表面均设置有所述消声层，所述第一泡棉层以及所述第二泡棉层均为全闭孔的发泡体。
  15. 根据权利要求13所述的OLED显示屏模组，其中，所述第二胶粘剂包括紫外光固化胶、橡胶、硅胶以及玻璃胶中的任意一种；所述第二胶粘剂的胶体呈倒梯形，所述第二胶粘剂的胶体与所述OLED显示面板的下表面的接触角大于90°。
  16. 根据权利要求15所述的OLED显示屏模组，其中，所述超声波指纹识别模块的两侧边与所述第二胶粘剂的胶体之间的接触部位上设置有凹凸结构。
  17. 根据权利要求10所述的OLED显示屏模组，其中，所述OLED显示面板包括TFT阵列基板、OLED发光层、阳极金属层、阴极金属层以及封装膜层，所述超声波指纹识别模块包括超声波识别传感器，所述超声波识别传感器在空间上与所述TFT阵列基板中的平坦化层上下位置关系垂直重叠。
  18. 根据权利要求17所述的OLED显示屏模组，其中，所述超声波识别传感器的感应面为整面式，所述超声波识别传感器贴附于所述OLED显示面板的下表面，相邻两所述超声波识别传感器之间通过所述消音层粘结。
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