CN106919914B - Display modules and electronic equipment - Google Patents
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- CN106919914B CN106919914B CN201710097101.9A CN201710097101A CN106919914B CN 106919914 B CN106919914 B CN 106919914B CN 201710097101 A CN201710097101 A CN 201710097101A CN 106919914 B CN106919914 B CN 106919914B
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
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Abstract
本公开是关于一种显示模组和一种电子设备，上述显示模组包括：显示面板；超声波发射层，设置在所述显示面板的有效发光区域中，用于向所述显示面板的出光侧发出超声波；超声波接收层，设置在所述显示面板的有效发光区域中，接收所述指纹反射至所述显示模组的超声波；处理器，用于根据所述超声波接收层接收到的超声波确定指纹图形。根据本公开的技术方案，由于超声波发射层和超声波接收层均为层结构，因此相对于相关技术中机械结构的超声波传感器，更容易设置在同为层结构的显示模组中，并且厚度相对于机械结构要薄得多，从而对显示模组所在电子设备厚度方向上的空间占用也较小，有利于电子设备的轻薄化。
The present disclosure relates to a display module and an electronic device. The above-mentioned display module includes: a display panel; The ultrasonic wave is emitted; the ultrasonic wave receiving layer is arranged in the effective light-emitting area of the display panel, and receives the ultrasonic wave reflected from the fingerprint to the display module; the processor is used for determining the fingerprint according to the ultrasonic wave received by the ultrasonic wave receiving layer graphics. According to the technical solution of the present disclosure, since the ultrasonic emitting layer and the ultrasonic receiving layer are both layer structures, compared with the ultrasonic sensor with mechanical structure in the related art, it is easier to be arranged in the display module with the same layer structure, and the thickness is relatively The mechanical structure is much thinner, thus occupying less space in the thickness direction of the electronic device where the display module is located, which is beneficial to the thinning of the electronic device.
Description
Technical Field
The present disclosure relates to the field of distance sensing technology, and in particular, to a display module and an electronic device.
Background
At present, an ultrasonic fingerprint identification structure in a mobile phone generally arranges an ultrasonic sensor with a mechanical structure on a physical key. Because the position department at the physics button needs to set up ultrasonic sensor and physics button, mechanical structure's ultrasonic sensor's thickness is great moreover, can lead to the space below the cell-phone upper cover plate great, leads to the overall structure of cell-phone unstable easily to be unfavorable for the frivolousization of cell-phone.
Disclosure of Invention
The present disclosure provides a display module and an electronic device to solve the disadvantages in the related art.
According to a first aspect of the embodiments of the present disclosure, a display module is provided, including:
a display panel;
the ultrasonic emission layer is arranged in the effective light emitting area of the display panel and used for emitting ultrasonic waves to the light emitting side of the display panel;
the ultrasonic receiving layer is arranged in the effective luminous area of the display panel and used for receiving the ultrasonic waves reflected to the display module by the fingerprints;
and the processor is used for determining a fingerprint pattern according to the ultrasonic waves received by the ultrasonic receiving layer.
Optionally, the display panel is a liquid crystal display panel, and the display module further includes a backlight module;
the ultrasonic wave emitting layer is arranged on one side, far away from the display panel, of the backlight module.
Optionally, the display panel includes a color film substrate, and the color film substrate includes a black matrix;
wherein the ultrasonic wave receiving layer is disposed at a position corresponding to the black matrix in the display panel.
Optionally, the ultrasonic wave receiving layer is disposed on a side of the black matrix away from the ultrasonic wave emitting layer.
Optionally, the display panel is an organic light emitting display panel, wherein the ultrasonic emission layer is disposed on a side of the display panel away from the light exit side.
Optionally, the display panel comprises organic light emitting material layers and a pixel defining layer disposed between adjacent organic light emitting material layers;
wherein the ultrasonic wave receiving layer is disposed in a position corresponding to the pixel defining layer in the display panel.
Optionally, the ultrasonic wave receiving layer is disposed on a side of the pixel defining layer away from the ultrasonic wave emitting layer.
Optionally, the material of the ultrasonic wave transmitting layer and the ultrasonic wave receiving layer is piezoelectric polyvinylidene fluoride.
According to a second aspect of the embodiments of the present disclosure, there is provided an electronic apparatus including:
a processor;
a memory for storing processor-executable instructions;
wherein, electronic equipment still includes the display module assembly, the display module assembly includes:
a display panel;
the ultrasonic emission layer is arranged in the effective light emitting area of the display panel and used for emitting ultrasonic waves to the light emitting side of the display panel;
the ultrasonic receiving layer is arranged in the effective luminous area of the display panel and used for receiving the ultrasonic waves reflected to the display module by the fingerprints;
and the processor is used for determining a fingerprint pattern according to the ultrasonic waves received by the ultrasonic receiving layer.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
according to the above embodiment, since the ultrasonic wave transmitting layer and the ultrasonic wave receiving layer are both of a layer structure, the ultrasonic wave receiving layer and the ultrasonic wave transmitting layer can be formed through a patterning process in a patterning process for forming each layer structure of the display panel, so that compared with an ultrasonic wave sensor of a mechanical structure in the related art, the ultrasonic wave transmitting layer and the ultrasonic wave receiving layer can be conveniently arranged in a display module of the same layer structure, the thickness of the ultrasonic wave transmitting layer is much thinner than that of the ultrasonic wave sensor of the mechanical structure, the occupied space in the thickness direction of the electronic device where the display module is located is smaller, and the electronic device is light and thin. In addition, the ultrasonic transmitting layer and the ultrasonic receiving layer are arranged in the effective light emitting area of the display panel, so that the integration level of the functions of the display module is improved, functional elements outside the display module are reduced, the occupied proportion of a screen in the electronic equipment is improved, and the manufacturing process for manufacturing the electronic equipment is simplified.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a structural diagram illustrating a display module according to an exemplary embodiment.
Fig. 2 is a schematic cross-sectional view of a display module according to an exemplary embodiment.
Fig. 3 is a schematic cross-sectional view of another display module according to an exemplary embodiment.
Fig. 4 is a schematic cross-sectional view illustrating yet another display module according to an exemplary embodiment.
Fig. 5 is a schematic cross-sectional view illustrating yet another display module according to an exemplary embodiment.
Fig. 6 is a block diagram illustrating a display device according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
According to a first embodiment of the present disclosure, a display module is provided, where the display module may be applied to an electronic device such as a mobile phone and a tablet computer, and the following description mainly illustrates an exemplary embodiment of the present disclosure where the display module is applied to a mobile phone. The display module assembly includes:
a display panel;
the ultrasonic emission layer is arranged in the effective light emitting area of the display panel and used for emitting ultrasonic waves to the light emitting side of the display panel; fig. 1 is a structural view illustrating a display module according to an exemplary embodiment, in which the ultrasonic wave emitting layer is disposed in an effective light emitting region of the display panel, as shown in fig. 1.
The ultrasonic receiving layer is arranged in the effective luminous area of the display panel and used for receiving the ultrasonic waves reflected to the display module by the fingerprints;
and the processor is used for determining a fingerprint pattern according to the ultrasonic waves received by the ultrasonic receiving layer. The processor may be electrically connected to the ultrasonic wave receiving layer, for example, a wire formed by a patterning process.
In one embodiment, the display module may further include a control component for controlling the ultrasonic wave emitting layer to operate in a first period and controlling the ultrasonic wave receiving layer to operate in a second period, and the first period and the second period are not overlapped. Therefore, the ultrasonic waves emitted by the ultrasonic wave emitting layer can be prevented from being received by the ultrasonic wave receiving layer without being reflected, and the accuracy of determining the fingerprint graph can be ensured.
In one embodiment, since the ultrasonic wave transmitting layer and the ultrasonic wave receiving layer are both of a layer structure, the ultrasonic wave receiving layer and the ultrasonic wave transmitting layer can be formed through a patterning process in a patterning process for forming each layer structure of the display panel, so that compared with an ultrasonic wave sensor of a mechanical structure in the related art, the ultrasonic wave receiving layer and the ultrasonic wave receiving layer can be conveniently arranged in a display module which is of a layer structure, the thickness of the ultrasonic wave sensor is much thinner than that of the ultrasonic wave sensor of the mechanical structure, the occupied space of the display module in the thickness direction of the electronic device is smaller, and the electronic device is light and thin. In addition, the ultrasonic transmitting layer and the ultrasonic receiving layer are arranged in the effective light emitting area of the display panel, so that the integration level of the functions of the display module is improved, functional elements outside the display module are reduced, the occupied proportion of a screen in the electronic equipment is improved, and the manufacturing process for manufacturing the electronic equipment is simplified.
Fig. 2 is a schematic cross-sectional view of a display module according to an exemplary embodiment. As shown in fig. 1, the display panel 1 is a liquid crystal display panel, and the display module further includes a backlight module 2;
the ultrasonic wave emitting layer 3 is disposed on a side of the backlight module 2 away from the display panel 1.
In an embodiment, the display panel 1 may further include an array substrate 11, a color filter substrate 12, and a liquid crystal layer 13, and a protective layer 14 may be further disposed on the display panel, of course, a lower polarizer may be disposed between the array substrate 11 and the backlight module 2, and an upper polarizer may be disposed between the color filter substrate 12 and the protective layer 14.
In one embodiment, because the general luminousness of ultrasonic emission layer is lower, through setting up the ultrasonic emission layer in backlight unit keep away from one side of display panel, can avoid the ultrasonic emission layer to cause the influence to the light-emitting of display module assembly. The ultrasonic receiving layer may be disposed between the color film substrate 12 and the liquid crystal layer 13 as shown in fig. 2, or may be disposed at other positions of the effective light emitting area of the display panel as needed to receive the ultrasonic waves reflected by the fingerprint to the display module.
Optionally, as shown in fig. 2, the display panel 1 includes a color film substrate 12, where the color film substrate 12 includes a black matrix 121;
wherein the ultrasonic wave receiving layer 4 is disposed at a position corresponding to the black matrix 121 in the display panel.
In one embodiment, the ultrasonic wave receiving layers 4 may be disposed above the black matrix 121 as shown in fig. 2, or may be disposed below the black matrix as needed, and the ultrasonic wave receiving layers 4 may be disposed in one-to-one correspondence with the black matrix 121 as shown in fig. 2, or the number of the ultrasonic wave receiving layers may be adjusted as needed, for example, one ultrasonic wave receiving layer may be disposed every other black matrix. Wherein, the area of ultrasonic receiving layer can equal with the area of black matrix, can avoid the ultrasonic transmitting layer to cause the influence to display module's light-emitting on the one hand, and on the other hand can guarantee great receiving area.
In one embodiment, since the ultrasonic receiving layer has a low transmittance, the ultrasonic receiving layer is disposed at a position corresponding to the black matrix, and the black matrix is opaque, so that the influence of the ultrasonic receiving layer on the light emitted from the display module can be avoided. As shown in fig. 2, the ultrasonic wave has good penetrability, so that the ultrasonic wave receiving layer is disposed on the side of the black matrix close to the backlight module, and the ultrasonic wave entering the display module from the outside of the display module can be ensured to penetrate the black matrix and reach the ultrasonic wave receiving layer.
Fig. 3 is a schematic cross-sectional view of another display module according to an exemplary embodiment. As shown in fig. 3, the ultrasonic wave receiving layer 4 is disposed on a side of the black matrix 121 remote from the ultrasonic wave emitting layer 3.
In one embodiment, although the ultrasonic wave has good penetrability, the black matrix still has a certain effect on the ultrasonic wave incident from the outside of the display module to the display module, so that the black matrix can be prevented from influencing the ultrasonic wave incident from the outside of the display module to the ultrasonic receiving layer by disposing the ultrasonic receiving layer on the side of the black matrix far away from the ultrasonic transmitting layer, i.e. on the black matrix as shown in fig. 3.
Fig. 4 is a schematic cross-sectional view illustrating yet another display module according to an exemplary embodiment. As shown in fig. 4, the display panel is an organic light emitting display panel, wherein the ultrasonic wave emitting layer 3 is disposed on a side of the display panel 6 far from the light emitting side.
In one embodiment, the display panel 6 may include organic light emitting layers 61 and a pixel defining layer 62 disposed between the organic light emitting layers 61. Wherein the organic light emitting layer may be used to emit white light, in which case the display panel may further include a color resistance layer; the organic light emitting layer may also be used to emit colored light, for example red, green, blue colored light.
In one embodiment, the display panel may be in a top emission mode, and the ultrasonic wave emitting layer may be disposed under the display panel; the display panel may also be in a bottom emission mode, and the ultrasonic wave emitting layer may be disposed over the display panel.
In one embodiment, because the general luminousness of ultrasonic emission layer is lower, through setting up ultrasonic emission layer in the one side of keeping away from display panel light-emitting direction, can avoid ultrasonic emission layer to cause the influence to display module's light-emitting. The ultrasonic receiving layer 4 can be disposed between the ultrasonic emitting layer 3 and the display panel 6 as shown in fig. 4, or disposed at other positions of the effective light emitting area of the display panel as required to receive the ultrasonic wave reflected by the fingerprint to the display module.
Alternatively, as shown in fig. 4, the display panel 6 includes organic light emitting material layers 61 and a pixel defining layer 62 disposed between adjacent organic light emitting material layers 61;
wherein the ultrasonic wave receiving layer 4 is disposed in a position corresponding to the pixel defining layer 62 in the display panel.
In one embodiment, the ultrasonic wave receiving layer 4 may be disposed below the display panel 6 as shown in fig. 4, or may be disposed above the display panel 6 as needed, and the ultrasonic wave receiving layers 4 may be disposed in one-to-one correspondence with the pixel defining layers 62 as shown in fig. 4, or the number of the ultrasonic wave receiving layers may be adjusted as needed, for example, one ultrasonic wave receiving layer may be disposed every other pixel defining layer. Wherein, the area of ultrasonic receiving layer and the area of pixel definition layer can equal, can avoid the ultrasonic transmitting layer to cause the influence to the light-emitting of display module assembly on the one hand, and on the other hand can guarantee great receiving area.
In one embodiment, since the ultrasonic receiving layer generally has a low transmittance, the ultrasonic receiving layer is disposed at a position corresponding to the pixel defining layer, and the pixel defining layer is opaque, so that the influence of the ultrasonic receiving layer on the light emitted from the display module can be avoided. As shown in fig. 5, since the ultrasonic waves have good penetrability, the ultrasonic receiving layer is disposed on the side of the pixel defining layer close to the backlight module, and the ultrasonic waves incident into the display module from the outside of the display module can be ensured to penetrate through the pixel defining layer and reach the ultrasonic receiving layer.
Fig. 5 is a schematic cross-sectional view illustrating yet another display module according to an exemplary embodiment. As shown in fig. 5, the ultrasonic wave receiving layer is disposed on a side of the pixel defining layer away from the ultrasonic wave emitting layer.
In one embodiment, although the ultrasonic wave has good penetration, the pixel defining layer still has a certain effect on the ultrasonic wave incident from the outside of the display module to the display module, so that by disposing the ultrasonic wave receiving layer on the side of the pixel defining layer far from the ultrasonic wave emitting layer, i.e. on the pixel defining layer as shown in fig. 6, the pixel defining layer can be prevented from affecting the ultrasonic wave receiving layer to receive the ultrasonic wave incident from the outside of the display module.
Optionally, the material of the ultrasonic wave transmitting layer and the ultrasonic wave receiving layer is piezoelectric polyvinylidene fluoride.
In one embodiment, the piezoelectric polyvinylidene fluoride is easily fabricated into a film structure and can convert an electrical signal into an ultrasonic wave and an ultrasonic wave into an electrical signal.
For the device embodiments, since they substantially correspond to the method embodiments, reference may be made to the partial description of the method embodiments for relevant points. The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the disclosed solution. One of ordinary skill in the art can understand and implement it without inventive effort.
Fig. 6 is a block diagram illustrating a display device 600 according to an exemplary embodiment. For example, the apparatus 600 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.
Referring to fig. 6, apparatus 600 may include one or more of the following components: processing component 602, memory 604, power component 606, multimedia component 608, audio component 610, input/output (I/O) interface 612, sensor component 614, and communication component 616. The device further comprises: display module assembly, display module assembly includes: a display panel; the ultrasonic emission layer is arranged in the effective light emitting area of the display panel and used for emitting ultrasonic waves to the light emitting side of the display panel; the ultrasonic receiving layer is arranged in the effective luminous area of the display panel and receives the ultrasonic waves reflected to the display module by the fingerprints; and the processor is used for determining a fingerprint pattern according to the ultrasonic waves received by the ultrasonic receiving layer.
The processing component 602 generally controls overall operation of the device 600, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 602 may include one or more processors 620 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 602 can include one or more modules that facilitate interaction between the processing component 602 and other components. For example, the processing component 602 can include a multimedia module to facilitate interaction between the multimedia component 608 and the processing component 602.
The memory 604 is configured to store various types of data to support operations at the apparatus 600. Examples of such data include instructions for any application or method operating on device 600, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 604 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The multimedia component 608 includes a screen that provides an output interface between the device 600 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 608 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 600 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 610 is configured to output and/or input audio signals. For example, audio component 610 includes a Microphone (MIC) configured to receive external audio signals when apparatus 600 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may further be stored in the memory 604 or transmitted via the communication component 616. In some embodiments, audio component 610 further includes a speaker for outputting audio signals.
The I/O interface 612 provides an interface between the processing component 602 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor component 614 includes one or more sensors for providing status assessment of various aspects of the apparatus 600. For example, the sensor component 614 may detect an open/closed state of the device 600, the relative positioning of components, such as a display and keypad of the device 600, the sensor component 614 may also detect a change in position of the device 600 or a component of the device 600, the presence or absence of user contact with the device 600, orientation or acceleration/deceleration of the device 600, and a change in temperature of the device 600. The sensor assembly 614 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 614 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 614 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 616 is configured to facilitate communications between the apparatus 600 and other devices in a wired or wireless manner. The apparatus 600 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 616 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 616 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 600 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as the memory 604 comprising instructions, executable by the processor 620 of the apparatus 600 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (4)
1. A display module, comprising:
a display panel;
the ultrasonic emission layer is arranged in the effective light emitting area of the display panel and used for emitting ultrasonic waves to the light emitting side of the display panel;
the ultrasonic receiving layer is arranged in the effective luminous area of the display panel and used for receiving ultrasonic waves reflected to the display module by fingerprints;
the processor is used for determining a fingerprint pattern according to the ultrasonic waves received by the ultrasonic receiving layer;
the display panel is a liquid crystal display panel, and the display module further comprises a backlight module;
the ultrasonic emission layer is arranged on one side, away from the display panel, of the backlight module;
the display panel comprises a color film substrate, and the color film substrate comprises a black matrix;
the ultrasonic receiving layer is arranged at a position corresponding to the black matrix in the display panel, and the area of the ultrasonic receiving layer is equal to that of the black matrix.
2. The display module according to claim 1, wherein the ultrasonic wave receiving layer is disposed on a side of the black matrix away from the ultrasonic wave emitting layer.
3. The display module according to any one of claims 1 to 2, wherein the material of the ultrasonic wave emitting layer and the ultrasonic wave receiving layer is piezoelectric polyvinylidene fluoride.
4. An electronic device, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein, electronic equipment still includes the display module assembly, the display module assembly includes:
a display panel;
the ultrasonic emission layer is arranged in the effective light emitting area of the display panel and used for emitting ultrasonic waves to the light emitting side of the display panel;
the ultrasonic receiving layer is arranged in the effective luminous area of the display panel and used for receiving ultrasonic waves reflected to the display module by fingerprints;
the processor is used for determining a fingerprint pattern according to the ultrasonic waves received by the ultrasonic receiving layer;
the display panel is a liquid crystal display panel, and the display module further comprises a backlight module;
the ultrasonic emission layer is arranged on one side, away from the display panel, of the backlight module;
the display panel comprises a color film substrate, and the color film substrate comprises a black matrix;
the ultrasonic receiving layer is arranged at a position corresponding to the black matrix in the display panel, and the area of the ultrasonic receiving layer is equal to that of the black matrix.
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| KR102593853B1 (en) * | 2017-12-29 | 2023-10-24 | 엘지디스플레이 주식회사 | Fingerprint sensing display apparatus |
| CN108363976B (en) * | 2018-02-09 | 2020-06-19 | 维沃移动通信有限公司 | Terminal equipment and manufacturing method thereof |
| CN110286738B (en) | 2019-06-29 | 2021-06-08 | Oppo广东移动通信有限公司 | Fingerprint acquisition method and related product |
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| CN105718105A (en) * | 2015-12-25 | 2016-06-29 | 麦克思商务咨询(深圳)有限公司 | Organic light-emitting diode touch display panel |
| CN106355165A (en) * | 2016-09-30 | 2017-01-25 | 北京小米移动软件有限公司 | Fingerprint data acquisition method and device |
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