CN109445640B - Display screen and electronic equipment with same - Google Patents
Display screen and electronic equipment with same Download PDFInfo
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- CN109445640B CN109445640B CN201811546328.8A CN201811546328A CN109445640B CN 109445640 B CN109445640 B CN 109445640B CN 201811546328 A CN201811546328 A CN 201811546328A CN 109445640 B CN109445640 B CN 109445640B
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- display
- substrate
- display screen
- acoustic
- receiver
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- 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
- G06F3/0412—Digitisers structurally integrated in a display
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- 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
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- 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
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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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- 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
- H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
- H04M1/035—Improving the acoustic characteristics by means of constructional features of the housing, e.g. ribs, walls, resonating chambers or cavities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2250/00—Details of telephonic subscriber devices
- H04M2250/22—Details of telephonic subscriber devices including a touch pad, a touch sensor or a touch detector
Abstract
The invention discloses a display screen, comprising: the display device comprises a display main body, a liquid crystal layer and a liquid crystal layer, wherein the display main body comprises a thin film transistor array substrate, a touch substrate, a color filter substrate positioned between the thin film transistor array substrate and the touch substrate, and the liquid crystal layer positioned between the thin film transistor array substrate and the color filter substrate; and the sound wave receiver is embedded in the display main body, so that the display screen has a sound wave detection function. The display function of the display screen is realized, the sound wave receiving function is realized, the display screen has the sound wave detection function, a microphone does not need to be additionally installed, the original microphone hole formed in the frame of the peripheral non-display area can be omitted, the visual communication and voice operation of modern electronic equipment are facilitated, the installation process of the electronic equipment and the hole forming process on the machine body are reduced, and the waterproof performance of the electronic equipment is greatly enhanced. The invention also discloses an electronic device comprising the display screen.
Description
Technical Field
The present invention relates to the field of electronic devices, and in particular, to a display screen and an electronic device having the same.
Background
At present, many electronic devices tend to be full-screen and waterproof, for example, mobile phones, speak towards the screen when a lot of video calls, voices and the like exist, and at this time, the microphone looks like a front turn at the bottom.
As shown in fig. 1, a conventional condenser microphone includes a capacitor, a battery c, and a resistor d, wherein the capacitor is composed of a diaphragm a and a substrate b, and the principle is as follows: when a sound wave signal enters the microphone, the vibration film a generates vibration, and the substrate b is fixed, so that the relative distance between the vibration film a and the substrate b can be changed along with the vibration, the capacitance value between the vibration film a and the substrate b can be changed along with the change, the voltage on the vibration film a and the voltage on the substrate b are not changed, the electric quantity change between the vibration film a and the substrate b can be caused, the strength of the external sound pressure is reflected by the electric quantity change, the frequency of the electric quantity change reflects the frequency of the external sound, and the sound wave signal is output in the form of an electric signal.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide a display screen and electronic equipment with the display screen, which not only can facilitate modern visual communication and voice operation, but also can enhance the waterproof performance of the electronic equipment and reduce installation procedures.
The purpose of the invention is realized by the following technical scheme:
the present invention provides a display screen, comprising:
the display device comprises a display main body, a liquid crystal layer and a liquid crystal layer, wherein the display main body comprises a thin film transistor array substrate, a touch substrate, a color filter substrate positioned between the thin film transistor array substrate and the touch substrate, and the liquid crystal layer positioned between the thin film transistor array substrate and the color filter substrate;
and the sound wave receiver is embedded in the display main body, so that the display screen has a sound wave detection function.
Further, a cavity is formed between the touch substrate and the color filter substrate, and the acoustic receiver is disposed in the cavity.
Further, the acoustic receiver is disposed between the thin film transistor array substrate and the color filter substrate.
Further, the display main body has a display area and a non-display area at a periphery.
Further, the sound wave receiver is a capacitance sound wave receiver, the capacitance sound wave receiver comprises a first sensing sheet and a second sensing sheet which are corresponding to each other in the up-down position, and the capacitance sound wave receiver is arranged in the display area.
Further, the sound wave receiver is a mutual inductor sound wave receiver, the mutual inductor sound wave receiver comprises a first induction coil and a second induction coil which are corresponding to each other in the up-down position, and the mutual inductor sound wave receiver is arranged in the display area.
Furthermore, the display area is provided with a plurality of pixel units, the pixel units are separated by a black matrix, and the non-display area is shielded by the black matrix.
Further, the acoustic wave receiver is a piezoelectric ceramic acoustic wave receiver disposed in the display area and corresponding to the black matrix.
Further, the sound wave receiver is a micro-electromechanical system sound wave receiver, and the micro-electromechanical system sound wave receiver is arranged in the non-display area.
The invention also provides electronic equipment comprising the display screen.
The invention has the beneficial effects that: the sound wave receiver is embedded in the display screen, so that the display function of the display screen is realized, the sound wave receiving function is realized, the display screen has the sound wave detection function, a microphone does not need to be additionally installed, the original microphone hole arranged on the frame of the peripheral non-display area can be cancelled, the visual communication and the voice operation of modern electronic equipment are facilitated, the installation process of the electronic equipment and the hole opening process on the machine body are reduced, and the waterproof performance of the electronic equipment is greatly enhanced.
Drawings
Fig. 1 is a schematic structural diagram of a prior art condenser microphone;
FIG. 2 is a schematic cross-sectional view of a display panel according to a first embodiment of the present invention;
FIG. 3 is a schematic plan view of the display screen of FIG. 2;
FIG. 4 is a schematic cross-sectional view of a display panel according to a second embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of a display panel according to a third embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of a display panel according to a fourth embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view of a display panel according to a fifth embodiment of the present invention;
FIG. 8 is a schematic cross-sectional view of a display panel according to a sixth embodiment of the present invention;
FIG. 9 is a schematic cross-sectional view of a display panel according to a seventh embodiment of the present invention;
FIG. 10 is a schematic plan view of the display screen of FIG. 9;
FIG. 11 is a schematic cross-sectional view of a display panel according to an eighth embodiment of the present invention;
FIG. 12 is a schematic diagram of the electronic device of the present invention;
fig. 13 is a schematic diagram of the transmission process of the acoustic wave signal in the present invention.
Detailed Description
To further clarify the technical solutions and effects adopted by the present invention to achieve the intended purpose, the following detailed description is given of specific embodiments, structures, features and effects of the present invention in conjunction with the accompanying drawings and preferred embodiments, and the embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Rather, they are merely examples of structures, devices, and methods consistent with certain aspects of the present disclosure, as detailed in the following claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "or/and" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
First embodiment
As shown in fig. 2 and 3, a first embodiment of the present invention discloses a display screen 100, where the display screen 100 includes:
a display main body 110, the display main body 110 having a display area C and a non-display area D at a periphery;
the sound wave receiver 120, the sound wave receiver 120 is embedded in the display body 110, so that the display screen 100 has the sound wave detection function.
In the embodiment, the display main body 110 includes a thin film transistor array substrate 111, a touch substrate 114, a color filter substrate 113 located between the thin film transistor array substrate 111 and the touch substrate 114, and a liquid crystal layer 112 located between the thin film transistor array substrate 111 and the color filter substrate 113, a cavity 140 is formed between the touch substrate 114 and the color filter substrate 113, and the acoustic receiver 120 is disposed in the cavity 140, wherein the thin film transistor array substrate 111 includes scan lines, data lines, Thin Film Transistors (TFTs), pixel electrodes, and common electrodes, etc., the scan lines and the data lines intersect with each other to form a plurality of pixel units, the color filter substrate 113 includes a black matrix, a red-green-blue-three-color resistance material, etc., the color resistance material is disposed in the pixel units, the plurality of pixel units are separated by the black matrix, and other configurations of the display main body 110 refer to the prior art, and will not be described in detail herein.
In the present embodiment, the acoustic wave receiver 120 is a capacitive acoustic wave receiver, and the capacitive acoustic wave receiver is disposed in the display area C of the display body 110, for example, in other embodiments, the capacitive acoustic wave receiver may also be disposed in the non-display area D of the display body 110.
In this embodiment, the capacitive acoustic wave receiver includes a first sensing sheet 121 and a second sensing sheet 122 disposed in the display area C at corresponding positions, wherein the first sensing sheet 121 is disposed on the touch substrate 114, the second sensing sheet 122 is disposed on the color filter substrate 113, the first sensing sheet 121 on the touch substrate 114 is used as one plate of a capacitor of the acoustic wave receiver 120, and the second sensing sheet 122 on the color filter substrate 113 is used as the other plate of the capacitor of the acoustic wave receiver 120. When an external acoustic signal is transmitted to the surface of the display main body 110, the acoustic signal drives the outermost touch substrate 114 to vibrate relative to the color filter substrate 113, that is, the relative distance between the touch substrate 114 and the color filter substrate 113 changes, so that the size of the capacitor in the acoustic receiver 120 is directly changed, the voltage between the two electrode plates of the capacitor is stable and unchanged, and the electric quantity of the two electrode plates of the capacitor changes, then the processor 200 connected to the acoustic receiver 120 amplifies the electric signal through the power amplifier and senses the change of the electric signal, and outputs a corresponding analog electric signal, the principle of the processor is substantially the same as that of a capacitor microphone in the prior art, and other circuits and elements except the capacitor in the acoustic receiver 120 can be integrated in the processor 200.
When a user performs a touch operation on the touch substrate 114, the touch substrate 114 may also be deformed and vibrated, so that both hand touch and external sound waves may vibrate the touch substrate 114, and vibration generated by hand touch is not desired by the user, and in order to eliminate interference of vibration caused by hand touch on sound wave detection, vibration generated by hand touch may be preset as a noise signal and stored, and when the processor 200 processes a detection signal of the sound wave receiver 120, a signal that is vibrated by hand touch may be filtered out by a filter according to the preset noise signal, so that only the sound wave signal is detected.
The first sensing sheet 121 and the second sensing sheet 122 are made of a transparent conductive material, such as Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), or aluminum zinc oxide (alzn), and are formed on the color filter substrate 113 and the touch substrate 114 by deposition, covering, etching, and other processes.
Preferably, the number of the acoustic receivers 120 embedded in the display area C of the display main body 110 is multiple, in this embodiment, as shown in fig. 3, the number of the acoustic receivers 120 is 2, that is, two pairs of sensing sheets (one first sensing sheet 121 and one second sensing sheet 122 corresponding to the upper and lower positions are a pair of sensing sheets) are distributed in the display area C, so that the sensing of vibration and the receiving of acoustic signals are more sensitive; preferably, the sound wave receivers 120 are distributed at the center of the display screen 100 (i.e. at the middle of the display area C), because the closer to the center of the display screen 100, the greater the vibration amplitude, and the more sensitive the received sound wave signal.
In one embodiment, the color filter substrate 113 and the touch substrate 114 and the color filter substrate 113 and the thin film transistor array substrate 111 are respectively bonded by the sealing adhesive 130, wherein the sealing adhesive 130 is an elastic adhesive, when the display screen 100 receives an acoustic signal, the touch substrate 114 vibrates with respect to the color filter substrate 113, and the sealing adhesive 130 can deform, so that the distance between the color filter substrate 113 and the touch substrate 114 changes more obviously, and the acoustic receiver 120 receives the acoustic signal more sensitively.
In this embodiment, the acoustic wave receiver 120 is embedded in the display area C of the display screen 100, so that the display function of the display screen 100 and the acoustic wave detection function are both realized. The sound wave receiver 120 is embedded in the display area C, so that the display screen 100 has a sound wave detection function, a microphone does not need to be additionally installed, and a microphone hole originally arranged on a frame of a peripheral non-display area can be eliminated, thereby facilitating the visual communication and voice operation of modern electronic equipment, reducing the installation process of the electronic equipment and the hole opening process on a machine body, and greatly enhancing the waterproof performance of the electronic equipment.
Second embodiment
As shown in fig. 4, the display screen 100 disclosed in the second embodiment of the present invention is basically the same as the display screen 100 disclosed in the first embodiment (fig. 2 and fig. 3) in structure and operation principle, and the difference is that: the acoustic wave receiver 120 is disposed in the liquid crystal layer 112, that is, between the thin film transistor array substrate 111 and the color filter substrate 113 of the acoustic wave receiver 120, specifically, the first sensing sheet 121 of the capacitive acoustic wave receiver is disposed On the color filter substrate 113 and faces one side of the liquid crystal layer 112, the second sensing sheet 122 of the capacitive acoustic wave receiver is disposed On the thin film transistor array substrate 111 and faces one side of the liquid crystal layer 112, the acoustic wave receiver 120 is accommodated by a gap between the thin film transistor array substrate 111 and the color filter substrate 113 for accommodating liquid crystal, and the Touch substrate 114 can be directly disposed On the outer surface of the color filter substrate 113, that is, no cavity is formed between the Touch substrate 114 and the color filter substrate 113, so as to implement an external Touch (On-Cell Touch), thereby reducing the thickness of the display screen 100.
It should be understood by those skilled in the art that the rest of the structure and the operation principle of the present embodiment are the same as those of the first embodiment, and are not described herein again.
Third embodiment
As shown in fig. 5, a display panel 100 according to a third embodiment of the present invention is substantially the same as the display panel 100 according to the first embodiment (fig. 2 and 3), except that: the acoustic wave receiver 120 is a mutual inductor acoustic wave receiver, which includes a first induction coil 123 and a second induction coil 124 disposed in the display area C and corresponding to the upper and lower positions, wherein the first induction coil 123 is disposed on the touch substrate 114, the second induction coil 124 is disposed on the color filter substrate 113, the first induction coil 123 on the touch substrate 114 is used as one of the poles of the acoustic wave receiver 120, the second induction coil 124 on the color filter substrate 113 is used as the other pole of the acoustic wave receiver 120, the induction coil (the first induction coil 123 or the second induction coil 124) on one side of the color filter substrate 113 and the touch substrate 114 is energized with current to generate a magnetic field, and no current is energized on the other side. In this embodiment, the first induction coil 123 is supplied with a stable direct current and forms a stable induction magnetic field, when the external acoustic signal is transmitted to the surface of the display main body 110, the acoustic signal drives the outermost touch substrate 114 to vibrate with respect to the color filter substrate 113, the relative distance between the touch substrate 114 and the color filter substrate 113 changes, that is, relative motion occurs, and the second induction coil 124 without current on the color filter substrate 113 will make cutting magnetic induction line motion and generate induction current, the processor 200 connected to the mutual coil acoustic receiver then amplifies the electrical signal by means of a power amplifier and senses the change in the electrical signal, and outputs a corresponding analog electrical signal, other circuits and elements of the sonic receiver 120 other than the first induction coil 123 and the second induction coil 124 may be integrated in the processor 200.
It should be understood by those skilled in the art that the rest of the structure and the operation principle of the present embodiment are the same as those of the first embodiment, and are not described herein again.
Fourth embodiment
As shown in fig. 6, the display screen 100 disclosed in the fourth embodiment of the present invention is basically the same as the display screen 100 disclosed in the third embodiment (fig. 5) in structure and operation principle, and the differences are as follows: the acoustic wave receiver 120 is disposed in the liquid crystal layer 112, that is, the acoustic wave receiver 120 is disposed between the thin film transistor array substrate 111 and the color filter substrate 113, specifically, the first induction coil 123 of the mutual coil acoustic wave receiver is disposed On the color filter substrate 113, and the second induction coil 124 of the mutual coil acoustic wave receiver is disposed On the thin film transistor array substrate 111, and the acoustic wave receiver 120 is received through a gap between the thin film transistor array substrate 111 and the color filter substrate 113 for receiving liquid crystal, so that the Touch substrate 114 can be directly disposed On the outer surface of the color filter substrate 113, that is, no cavity is formed between the Touch substrate 114 and the color filter substrate 113, thereby implementing an external embedded Touch (On-Cell Touch), and reducing the thickness of the display screen 100.
In this embodiment, the first induction coil 123 is supplied with a stable direct current and forms a stable induction magnetic field, when the external acoustic signal is transmitted to the surface of the display main body 110, the acoustic signal drives the outermost touch substrate 114 to vibrate with respect to the tft array substrate 111, the relative distance between the color filter substrate 113 and the tft array substrate 111 changes, that is, the relative motion occurs, so that the second induction coil 124 without current on the thin film transistor array substrate 111 will make the cutting magnetic induction line motion and generate the induction current, the processor 200 connected to the mutual coil acoustic receiver then amplifies the electrical signal by means of a power amplifier and senses the change in the electrical signal, and outputs a corresponding analog electrical signal, other circuits and elements of the sonic receiver 120 other than the first induction coil 123 and the second induction coil 124 may be integrated in the processor 200.
It should be understood by those skilled in the art that the rest of the structure and the operation principle of the present embodiment are the same as those of the third embodiment, and are not described herein again.
Fifth embodiment
As shown in fig. 7, a display panel 100 according to a fifth embodiment of the present invention is substantially the same as the display panel 100 according to the first embodiment (fig. 2 and 3), except that: the acoustic receiver 120 is a piezoelectric ceramic acoustic receiver 125, the piezoelectric ceramic acoustic receiver 125 is disposed between the color filter substrate 113 and the touch substrate 114, and two ends of the piezoelectric ceramic acoustic receiver 125 respectively contact the color filter substrate 113 and the touch substrate 114, wherein the piezoelectric ceramic is a kind of electronic ceramic material with piezoelectric property, i.e., the piezoelectric ceramic acoustic receiver 125 can convert a mechanical signal generating deformation into an electrical signal for output, and the piezoelectric ceramic acoustic receiver 125 refers to the prior art and is not described herein again.
When an external acoustic signal is transmitted to the surface of the display main body 110, the acoustic signal drives the outermost touch substrate 114 to vibrate relative to the color filter substrate 113, the relative distance between the touch substrate 114 and the color filter substrate 113 changes, that is, relative motion occurs, the piezoelectric ceramic acoustic receiver 125 is pressed by the color filter substrate 113 and the touch substrate 114 and deforms, and a mechanical signal deformed by the pressing is converted into an electrical signal to be output, then the processor 200 connected to the piezoelectric ceramic acoustic receiver 125 amplifies the electrical signal through the power amplifier and senses the change of the electrical signal, and outputs a corresponding analog electrical signal, and other circuits and elements except piezoelectric ceramic in the acoustic receiver 120 can be integrated in the processor 200.
Preferably, the piezoceramic acoustic wave receiver 125 is disposed in the display area C in an area corresponding to the black matrix 115, and since the piezoceramic is made of an opaque material, the disposition in the area of the pixel unit 116 may affect the normal display of the display screen 100. In the present embodiment, the display area C has a plurality of pixel units 116, the pixel units 116 are separated by a black matrix 115, and the non-display area D is shielded by the black matrix.
It should be understood by those skilled in the art that the rest of the structure and the operation principle of the present embodiment are the same as those of the first embodiment, and are not described herein again.
Sixth embodiment
As shown in fig. 8, a display panel 100 according to a sixth embodiment of the present invention is basically the same as the display panel 100 according to the fifth embodiment (fig. 7), except that: the acoustic receiver 120 is disposed in the liquid crystal layer 112, that is, the piezoelectric ceramic acoustic receiver 125 is disposed between the thin film transistor array substrate 111 and the color filter substrate 113, and two ends of the piezoelectric ceramic acoustic receiver 125 respectively contact with the thin film transistor array substrate 111 and the color filter substrate 113. The acoustic wave receiver 120 is accommodated through a gap for accommodating liquid crystal between the thin film transistor array substrate 111 and the color filter substrate 113, and then the Touch substrate 114 can be directly disposed On the outer surface of the color filter substrate 113, i.e., no cavity is formed between the Touch substrate 114 and the color filter substrate 113, so that an external-Cell Touch (On-Cell Touch) is realized, thereby reducing the thickness of the display screen 100.
It should be understood by those skilled in the art that the rest of the structure and the operation principle of the present embodiment are the same as those of the fifth embodiment, and are not described herein again.
Seventh embodiment
As shown in fig. 9 and 10, a display panel 100 according to a seventh embodiment of the present invention is substantially the same as the display panel 100 according to the first embodiment (fig. 2 and 3), except that: the acoustic wave receiver 120 is a mems acoustic wave receiver 126, the mems acoustic wave receiver 126 is disposed between the color filter substrate 113 and the touch substrate 114 and located in the non-display region D, in this embodiment, the sealing adhesive 130 between the color filter substrate 113 and the touch substrate 114 is disposed in the non-display region D and near the display region C, the sealing adhesive 130 is not disposed in the non-display region D and far away from the display region C, and the non-display region D is used to accommodate the mems acoustic wave receiver 126. Because the MEMS acoustic receiver 126 is similar to a tiny capacitive microphone, a vibrating membrane for sensing acoustic waves is disposed in the MEMS acoustic receiver 126, and it is not necessary to sense acoustic signals by relative vibration of two substrates, but only air around the MEMS acoustic receiver 126 can generate vibration, and the acoustic waves are transmitted to the air around the MEMS acoustic receiver 126 through the touch substrate 114 or the housing of the electronic device, so that the air around the MEMS acoustic receiver 126 vibrates, and the air drives the vibrating membrane in the MEMS acoustic receiver 126 to generate vibration, wherein the MEMS acoustic receiver 126 is a MEMS microphone (Micro Electro Mechanical Systems, abbreviated as silicon microphone).
When the external acoustic wave signal is transmitted to the surface of the display main body 110, the acoustic wave signal drives the outermost touch substrate 114 to generate vibration, and the air around the mems acoustic receiver 126 vibrates, and the air drives the diaphragm inside the mems acoustic receiver 126 to vibrate, so that the distance between the diaphragm inside the mems acoustic receiver 126 and the substrate is relatively changed, thus, the capacitance in the mems acoustic receiver 126 changes, while the voltage between the diaphragm and the substrate does not change, causing a change in the charge on the diaphragm and the substrate, the processor 200 connected to the mems acoustic receiver 126 then amplifies the electrical signal through the power amplifier and senses the change of the electrical signal, and outputs a corresponding analog electrical signal, and other circuits and elements of the acoustic receiver 120 except for the mems can be integrated into the processor 200.
In the present embodiment, the display area C has a plurality of pixel units 116, the pixel units 116 are separated by a black matrix 115, and the non-display area D is shielded by the black matrix. As shown in fig. 10, the mems acoustic receivers 126 are located on the periphery of the display main body, the number of the mems acoustic receivers 126 is six, and six mems acoustic receivers 126 are electrically connected and connected to the processor 200.
In other embodiments, the mems acoustic receiver 126 may also be disposed in the display area C and correspond to the black matrix 115, at this time, the acoustic wave drives the touch substrate 114 to vibrate, and the mems acoustic receiver 126 also vibrates, so that the distance between the vibrating membrane and the substrate in the mems acoustic receiver 126 is relatively changed, and thus the capacitance in the mems acoustic receiver 126 is changed, and the voltage between the vibrating membrane and the substrate is not changed, which may cause the electric quantity on the vibrating membrane and the substrate to change, and then the processor 200 connected to the mems acoustic receiver 126 amplifies the electric signal through the power amplifier and senses the change of the electric signal, and outputs a corresponding analog electric signal. The requirements of the processor 200 are relatively high and can sense small changes in capacitance within the mems acoustic receiver 126.
It should be understood by those skilled in the art that the rest of the structure and the operation principle of the present embodiment are the same as those of the first embodiment, and are not described herein again.
Eighth embodiment
As shown in fig. 11, a display panel 100 according to an eighth embodiment of the present invention is basically the same as the display panel 100 according to the seventh embodiment (fig. 9), except that: the acoustic receiver 120 is disposed in the liquid crystal layer 112, i.e. between the mems acoustic receiver 126 and the tft array substrate 111 and the color filter substrate 113, in this embodiment, the sealing adhesive 130 between the tft array substrate 111 and the color filter substrate 113 is disposed in the non-display region D and near the display region C, while the sealing adhesive 130 is not disposed in the non-display region D and far away from the display region C, and the portion of the non-display region D far away from the display region C is used for accommodating the mems acoustic receiver 126. The acoustic wave receiver 120 is accommodated through a gap for accommodating liquid crystal between the thin film transistor array substrate 111 and the color filter substrate 113, and then the Touch substrate 114 can be directly disposed On the outer surface of the color filter substrate 113, i.e., no cavity is formed between the Touch substrate 114 and the color filter substrate 113, so that an external-Cell Touch (On-Cell Touch) is realized, thereby reducing the thickness of the display screen 100.
It should be understood by those skilled in the art that the rest of the structure and the operation principle of the present embodiment are the same as those of the seventh embodiment, and are not described herein again.
As shown in fig. 12, an electronic device disclosed in the present invention includes: the display screen 100 is connected to the body of the electronic device, wherein the display screen 100 is used for the display function and the sound wave receiving function of the electronic device, the processor 200 is used for processing the received sound wave signal, and the memory 300 stores the processed digital signal.
Wherein, processor 200 includes:
the filter 210 is configured to remove noise signals from the analog electrical signals, because the analog electrical signals output by the acoustic wave receiver 120 include analog electrical signals converted from vibration generated by touching a mobile phone body and analog electrical signals converted from vibration of the mobile phone by acoustic waves through air, and the filter 210 filters the noise signals from the analog electrical signals by presetting the noise signals;
the power amplifier 220, the power amplifier 220 is used for amplifying the analog electric signal;
the Analog-to-digital converter 230 (ADC) is configured to convert the amplified Analog electrical signal into a digital signal.
When the electronic equipment is a mobile phone, the display screen 100 is connected with a body of the mobile phone, so that the mobile phone does not need to be additionally provided with a microphone, and the original microphone hole arranged on the frame of the peripheral non-display area can be cancelled, thereby facilitating the visual communication and voice operation of modern electronic equipment, reducing the installation process of the electronic equipment and the hole opening process on the body, and greatly enhancing the waterproof performance of the electronic equipment.
Referring to fig. 13, the mouth 400 emits sound waves 410 to vibrate air, and then the display screen 100 of the electronic device is vibrated, the sound wave receiver 120 in the display screen 100 converts mechanical energy of vibration into an analog electrical signal 420, the analog electrical signal 420 is transmitted to the filter 210 to obtain an analog electrical signal 422 with noise signals 421 removed, the analog electrical signal 422 is transmitted to the power amplifier 220 to obtain an amplified analog electrical signal 430, the analog electrical signal 430 is transmitted to the analog-to-digital converter 230 to obtain a digital signal 440, and the digital signal 440 is transmitted to the memory 300 to be processed and stored, wherein the order of the filter 210 and the rate amplifier 220 can be changed.
In this document, the terms upper, lower, left, right, front, rear and the like are used for defining the positions of the structures in the drawings and the positions of the structures relative to each other, and are only used for the clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A display screen, comprising:
the display device comprises a display main body (110), wherein the display main body (110) comprises a thin film transistor array substrate (111), a touch substrate (114), a color filter substrate (113) positioned between the thin film transistor array substrate (111) and the touch substrate (114), and a liquid crystal layer (112) positioned between the thin film transistor array substrate (111) and the color filter substrate (113);
an acoustic receiver (120), the acoustic receiver (120) being embedded in the display body (110) to provide the display screen (100) with an acoustic detection function;
a cavity (140) is formed between the touch substrate (114) and the color filter substrate (113), the acoustic receiver (120) is arranged in the cavity (140), and two ends of the acoustic receiver (120) are respectively connected with the touch substrate (114) and the color filter substrate (113); or the acoustic receiver (120) is arranged between the thin film transistor array substrate (111) and the color filter substrate (113), and two ends of the acoustic receiver (120) are respectively connected with the thin film transistor array substrate (111) and the color filter substrate (113).
2. The display screen of claim 1, wherein the display body (110) has a display area (C) and a non-display area (D) at the periphery.
3. A display screen according to claim 2, characterised in that the acoustic wave receiver (120) is a capacitive acoustic wave receiver comprising a first sensing foil (121) and a second sensing foil (122) in correspondence of the upper and lower positions, the capacitive acoustic wave receiver being arranged in the display area (C).
4. A display screen according to claim 2, characterised in that the acoustic receiver (120) is a mutual coil acoustic receiver comprising a first induction coil (123) and a second induction coil (124) in a top-bottom position, the mutual coil acoustic receiver being arranged in the display area (C).
5. A display screen according to claim 2, wherein the display area (C) has a plurality of pixel units (116), the plurality of pixel units (116) are separated by a black matrix (115), and the non-display area (D) is shielded by the black matrix (115).
6. A display screen according to claim 5, characterised in that the acoustic receiver (120) is a piezoceramic acoustic receiver (125), the piezoceramic acoustic receiver (125) being arranged in the display area (C) and corresponding to a black matrix (115).
7. A display screen according to claim 5, characterised in that the acoustic receiver (120) is a MEMS acoustic receiver (126), the MEMS acoustic receiver (126) being arranged in the non-display area (D).
8. An electronic device, characterized in that it comprises a display screen (100) according to any one of claims 1 to 7.
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| CN201811546328.8A CN109445640B (en) | 2018-12-18 | 2018-12-18 | Display screen and electronic equipment with same |
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| CN201811546328.8A CN109445640B (en) | 2018-12-18 | 2018-12-18 | Display screen and electronic equipment with same |
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| CN109445640A CN109445640A (en) | 2019-03-08 |
| CN109445640B true CN109445640B (en) | 2022-02-15 |
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Address after: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Applicant after: Kunshan Longteng Au Optronics Co Address before: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Applicant before: Kunshan Longteng Optronics Co., Ltd. |
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