WO2020232934A1 - 显示面板构造及电子装置 - Google Patents

显示面板构造及电子装置 Download PDF

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Publication number
WO2020232934A1
WO2020232934A1 PCT/CN2019/107465 CN2019107465W WO2020232934A1 WO 2020232934 A1 WO2020232934 A1 WO 2020232934A1 CN 2019107465 W CN2019107465 W CN 2019107465W WO 2020232934 A1 WO2020232934 A1 WO 2020232934A1
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WIPO (PCT)
Prior art keywords
color filter
display panel
panel structure
substrate
piezoelectric film
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PCT/CN2019/107465
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English (en)
French (fr)
Inventor
周永祥
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武汉华星光电技术有限公司
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Publication of WO2020232934A1 publication Critical patent/WO2020232934A1/zh

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/06—Systems determining the position data of a target
    • G01S15/08—Systems for measuring distance only
    • 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
    • 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

Definitions

  • the present invention relates to display technology, in particular to a display panel structure and an electronic device capable of applying ultrasonic waves.
  • people may need to use electronic devices such as mobile phones to measure some distances, such as using ultrasound to measure the distance to others, or the height and length of a house.
  • electronic devices such as mobile phones to measure some distances, such as using ultrasound to measure the distance to others, or the height and length of a house.
  • the existing module structure is very complex, which increases the difficulty of manufacturing, resulting in the integration problem of the existing electronic devices with display function in the application of ultrasound, which still needs to be improved.
  • the present invention provides a packaging structure to solve the problem of the integration of ultrasonic applications in electronic devices with display functions in the prior art.
  • one aspect of the present invention provides a display panel structure, which includes a display area and a transducing area, the transducing area being within the display area, and the transducing area including: A backlight source; two polarizing plates arranged above the backlight source in parallel; a display assembly arranged between the two polarizing plates, the display assembly including a circuit substrate, a color film substrate and a liquid crystal layer , The circuit substrate is adjacent to the backlight, the color filter substrate is far from the backlight, the liquid crystal layer is disposed between the circuit substrate and the color filter substrate, and the color filter substrate is a color filter A light sheet or a quantum dot display film; a piezoelectric film body is arranged above the color film substrate, the piezoelectric film body includes a first electrode, a piezoelectric material layer and a second electrode, the The piezoelectric material layer is arranged between the first electrode and the second electrode; and a protective layer is arranged above the piezoelectric film
  • the piezoelectric film body is disposed between the color filter substrate and one of the two polarizing plates that is far from the backlight source.
  • the piezoelectric film body further includes two insulators, the two insulators are provided on the side of the second electrode facing away from the piezoelectric material layer, and the two insulators are connected to the piezoelectric material layer. A cavity is formed between the second electrodes.
  • the display panel structure further includes two flexible circuit boards and two integrated circuits, and the two integrated circuits are respectively electrically connected to the circuit substrate and the circuit board via one of the two flexible circuit boards. ⁇ Color film substrate.
  • the integrated circuit electrically connected to the color filter substrate is used to control the piezoelectric film body to transmit and receive ultrasonic waves, and the frequency range of the ultrasonic waves is between 25 and 100 kilohertz.
  • the display panel structure further includes a touch layer, and the touch layer is disposed between the circuit substrate and the protective layer.
  • the touch layer is disposed at one of the following positions: between the protective layer and the one of the two polarizing plates that is far from the backlight; in the two polarizing plates Between the one far from the backlight and the piezoelectric film body; or between the circuit substrate and the color film substrate.
  • another aspect of the present invention provides a display panel structure, including a display area and a transducing area, the transducing area is within the display area, and the transducing area includes: A backlight source; two polarizing plates arranged above the backlight source in parallel; a display assembly arranged between the two polarizing plates, the display assembly including a circuit substrate, a color film substrate and a liquid crystal layer , The circuit substrate is adjacent to the backlight source, the color filter substrate is away from the backlight source, the liquid crystal layer is disposed between the circuit substrate and the color filter substrate; a piezoelectric film body is disposed on the Above the color film substrate; and a protective layer, arranged above the piezoelectric film body.
  • the piezoelectric film body may be disposed between the color filter substrate and one of the two polarizing plates that is far from the backlight source.
  • the piezoelectric film body may include a first electrode, a piezoelectric material layer, and a second electrode, and the piezoelectric material layer is disposed on the first electrode and the second electrode. Between two electrodes.
  • the piezoelectric film body further includes two insulators, the two insulators are provided on the side of the second electrode facing away from the piezoelectric material layer, and the two insulators are connected to the piezoelectric material layer. A cavity is formed between the second electrodes.
  • the display panel structure may further include two flexible circuit boards and two integrated circuits, and the two integrated circuits are respectively electrically connected to the circuit substrate and the circuit board via one of the two flexible circuit boards.
  • the color film substrate may further include two flexible circuit boards and two integrated circuits, and the two integrated circuits are respectively electrically connected to the circuit substrate and the circuit board via one of the two flexible circuit boards.
  • the integrated circuit electrically connected to the color filter substrate is used to control the piezoelectric film body to transmit and receive ultrasonic waves, and the frequency range of the ultrasonic waves is between 25 and 100 kilohertz.
  • the display panel structure may further include a touch layer, and the touch layer is disposed between the circuit substrate and the protective layer.
  • the touch control layer may be disposed at one of the following positions: between the protective layer and the one of the two polarizing plates that is far from the backlight; between the two polarizing plates Between the one far from the backlight and the piezoelectric film body; or between the circuit substrate and the color film substrate.
  • the color filter substrate is a color filter or a quantum dot display film.
  • another aspect of the present invention provides an electronic device including the above-mentioned display panel structure.
  • the display panel structure and electronic device of the present invention can not only integrate the touch function, but also integrate the transducer module that can be used for distance measurement and other functions in the display panel structure, for example:
  • the piezoelectric film body is arranged above the color filter substrate, which does not significantly increase the thickness of the display panel structure, and can maintain the characteristics of lightness and thinness;
  • the structure of the transducer module is very simple, easy to manufacture, and can reduce manufacturing costs;
  • the energy conversion module does not require additional openings, which can significantly increase the screen-to-body ratio and enhance user experience.
  • FIG. 1 is a schematic diagram of an electronic device according to an embodiment of the invention.
  • FIG. 2 is a schematic cross-sectional view of the display panel structure of the first embodiment of the invention.
  • Fig. 3 is a schematic diagram of a structure of the piezoelectric film body of the present invention.
  • Fig. 4 is a schematic diagram of another structure of the piezoelectric film body of the present invention.
  • FIG. 5 is a schematic cross-sectional view of the structure of the display panel according to the second embodiment of the present invention.
  • FIG. 6 is a schematic cross-sectional view of the display panel structure of the third embodiment of the present invention.
  • an electronic device D may include a display panel structure.
  • the display panel structure may include a display area D1 and a transducing area D2, and the display area D1 may be used for displaying Image
  • the display area D1 may be an active area of the display panel
  • the transduction area D2 is within the display area D1
  • the transduction area D2 can be any shape, such as a circle or a square Etc., to provide an ultrasonic transducing function
  • the transducing area D2 can be located in any part or all of the display area D1, for example: the transducing area D2 can also cover the entire display area D1.
  • the electronic device D is an electronic device with a display function.
  • the electronic device D can be configured as a portable electronic device such as a mobile phone, a notebook computer, a tablet computer or a watch according to actual needs.
  • the electronic device D may also be a fixed electronic device, such as an altimeter, etc., which can be understood by those skilled in the art.
  • the following examples illustrate some embodiments of the display panel structure, but are not limited thereto.
  • the structure of the display panel according to the first embodiment of the present invention may include: a backlight source 1, two polarizing plates 2a, 2b, a display assembly 3. A piezoelectric film body 4 and a protective layer 5.
  • the backlight source 1 can be composed of a backlight source module of an existing liquid crystal display to provide a light source; the two polarizing plates 2a, 2b can be arranged in parallel above the backlight source 1, for example: the polarizing plate 2a can be arranged On the backlight source 1, the polarizing plate 2b and the polarizing plate 2a are opposed to each other to provide a light polarization function.
  • the display assembly 3 may be disposed between the two polarizing plates 2a, 2b.
  • the display assembly 3 may be a part of a liquid crystal panel, such as the display
  • the image component may include a circuit substrate 31, a color filter substrate 32, and a liquid crystal layer 33.
  • the circuit substrate 31 is adjacent to the backlight source 1.
  • the circuit substrate 31 may be arranged adjacent to the polarized light source of the backlight source 1.
  • the circuit substrate 31 can be a glass substrate with a thin film transistor array (TFT array), which can be used to control the display content; the color filter substrate 32 is far away from the backlight 1, for example; the color filter substrate 32 can be arranged on the polarizing plate 2b far away from the backlight source 1.
  • the color filter substrate 32 can be a glass substrate with filtering or dimming function, for example; the glass substrate can be coated with red, blue, and green filters Material to form a color filter (Color Filter, CF), but not limited to this.
  • the filter material can also be replaced with other luminescent materials, such as making quantum dots (quantum dots).
  • the liquid crystal layer 33 is disposed on the circuit substrate 31 and the Between the color film substrates 32, for example, TFT array glass and CF glass are combined in a vacuum process, and a photo spacer (PS) is used as a support to fill the liquid crystal material to form the liquid crystal layer 33.
  • PS photo spacer
  • the piezoelectric film body 4 can be arranged above the color filter substrate 32 to convert electrical signals into ultrasonic waves or convert ultrasonic waves into electrical signals.
  • the piezoelectric film body 4 is provided Between the color film substrate 32 and the one (such as 2b) of the two polarizing plates 2a, 2b that is far from the backlight source 1, but not limited to this, the piezoelectric film body 4 can also be required It is arranged at other positions above the color filter substrate 32, such as a position between the protective layer 5 and the polarizing plate 2b.
  • the module for the ultrasonic conversion function (such as the piezoelectric film body 4) does not require additional openings, which can make the entire display panel structure lighter and thinner, and the ultrasonic transmission process between the piezoelectric film body 4 and the outside is only Passing through fewer layers can reduce the loss of ultrasonic waves in the transmission process, and the received signal strength is also stronger, which is conducive to the improvement of the signal-to-noise ratio.
  • the piezoelectric film body 4 may include a first electrode 41, a piezoelectric material layer 42 and a second electrode 43, and the piezoelectric material layer 42 is disposed on the between the first electrode 41 and the second electrode 43, for example, the material of at least one of the first electrode 41 and the second electrode 43 may be selected from the group consisting of the following elements: silver, Aluminum, manganese, gold, chromium, nickel, copper, and lead, or can also be selected from transparent electrodes (ITO) or derivatives thereof, etc., and the thickness can range from 1 to 100 microns ( ⁇ m); the piezoelectric material layer The material of 42 can be selected from piezoelectric ceramic lead zirconate titanate (PZT), aluminum nitride (AlN), polyvinylidene fluoride (PVDF) or copolymers, for example: copolymers of polyvinylidene fluoride and trifluoroethylene ( PVDF-TrFE), its thickness can
  • the piezoelectric film body 4 may further include two insulators 44a, 44b.
  • the material of at least one of the two insulators 44a, 44b may be butyl rubber. rubber), acrylate rubber (acrylate rubber), nitrile rubber and silicone rubber, polyurethane, polyvinyl chloride or epoxy
  • the thickness of the two insulators 44a, 44b can be arranged on the side of the second electrode 43 facing away from the piezoelectric material layer 42.
  • the thickness of the two insulators 44a, 44b can be between 1 and 100 microns.
  • a cavity 45 can be formed between 44b and the second electrode 43.
  • the cavity 45 inside the piezoelectric film body 4 can be adapted to the situation where the vibration amplitude of the piezoelectric film body 4 is large and the output sound pressure is large; in addition, through the arrangement of the two insulators 44a, 44b Therefore, the thickness of the piezoelectric film body 4 can be increased to increase the output sound pressure of the piezoelectric film body 4, so that the transducer module can measure a longer distance and has a higher signal-to-noise ratio.
  • the protective layer 5 may be disposed above the piezoelectric film body 4, for example: the material of the protective layer 5 may be a protective glass used for a liquid crystal screen to protect the display Each material layer inside the panel structure.
  • the display panel structure of the present invention may further include two flexible circuit boards 6a, 6b and two integrated circuits 7a, 7b, and the two integrated circuits 7a, 7b can respectively pass through the two flexible circuit boards.
  • One of the circuit boards 6a and 6b is electrically connected to the circuit substrate 31 and the color filter substrate 32.
  • the integrated circuit 7a can be used to control the circuit substrate 31, and the integrated circuit 7b can be used to control the
  • the piezoelectric film body 4 generates ultrasonic waves or receives ultrasonic waves, and uses ultrasonic waves as a basis for corresponding functions such as distance measurement, but not limited to this.
  • the functions of the integrated circuits 7a and 7b can also be interchanged or integrated.
  • the integrated circuit 7b electrically connected to the color filter substrate 32 can be used to control the piezoelectric film body 4 to transmit and receive ultrasonic waves, and the frequency range of the ultrasonic waves is 25 to 100 kilohertz (kHz)
  • the low frequency range between 25, 50, 75 or 100 kHz, etc. can make the ultrasonic wave have a stronger penetration effect, so that the penetration process loss is smaller, in order to achieve long-distance measurement, so as to achieve a good ultrasonic measurement Distance function.
  • the integrated circuit 7b when the integrated circuit 7b receives a ranging task, the integrated circuit 7b sends out an electric signal, and the electric signal is transmitted to the piezoelectric film body 4, which causes the piezoelectric film body 4 to vibrate. Generate ultrasonic waves to emit ultrasonic waves; when the ultrasonic waves encounter external objects, they will be reflected. When the ultrasonic waves are transmitted back to the piezoelectric film body 4, the ultrasonic waves will be converted into electrical signals, which can pass through the color film
  • the substrate 32 is transmitted to the integrated circuit 7b, or an electrical signal can also be transmitted to the integrated circuit 7a through the circuit substrate 31.
  • the integrated circuit 7a or 7b can calculate the time used for ultrasonic transmission to obtain the distance of ultrasonic transmission as The basis of the ranging function.
  • the display panel structure may further include a touch layer 8.
  • the touch layer 8 may be a touch electrode layer for a touch screen.
  • the touch layer 8 may be disposed between the circuit substrate 31 and the protective layer 5.
  • the touch layer 8 may be disposed above the liquid crystal layer 33 according to actual requirements.
  • the touch control layer 8 may be disposed between the protective layer 5 and the one (such as 2b) of the two polarizing plates 2a, 2b that is far from the backlight source 1; instead Ground, as shown in FIG.
  • the touch control layer 8 can be arranged between the one (such as 2b) of the two polarizing plates 2a, 2b far from the backlight 1 and the piezoelectric film body 4; instead Ground, as shown in FIG. 6, the touch layer 8 may be disposed between the circuit substrate 31 and the color filter substrate 32, for example: the touch layer 8 may be disposed on the color filter substrate 32 One side. Therefore, the above-mentioned display panel structure can also provide a touch function.
  • the second and third embodiments of the display panel structure of the present invention may also include the above-mentioned backlight, polarizer, imaging component, piezoelectric film, protective layer, flexible circuit board, integrated circuit, and The touch layer, the difference between the second and third embodiments and the first embodiment is that the touch module of the second embodiment is on Cell architecture, the touch module of the third embodiment is an in cell architecture.
  • the display panel structure and electronic device of the above-mentioned embodiment of the present invention can not only integrate the touch function, but also integrate the transducer module that can be used for distance measurement and other functions in the display panel structure, for example: the piezoelectric film
  • the body is arranged above the color filter substrate, which does not significantly increase the thickness of the display panel structure, and can maintain the characteristics of lightness and thinness; the structure of the transducer module is very simple, easy to manufacture, and can reduce the manufacturing cost;
  • the transducer module does not require additional openings, which can significantly increase the screen-to-body ratio and enhance user experience.

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Abstract

一种显示面板构造及电子装置，所述显示面板构造包括一显示区域及一换能区域，所述换能区域在所述显示区域内，所述换能区域包括：一背光源；两偏光板，平行设置在所述背光源上方；一显像组件，设置在所述两偏光板之间，所述显像组件包括一电路基板、一彩膜基板及一液晶层，所述电路基板邻近所述背光源，所述彩膜基板远离所述背光源，所述液晶层设置在所述电路基板与所述彩膜基板之间；一压电膜体，设置在所述彩膜基板上方；及一保护层，设置在所述压电膜体上方。

Description

显示面板构造及电子装置 技术领域
本发明涉及显示技术，特别是有关于一种能够应用超声波的显示面板构造及电子装置。
 背景技术
随着电子技术的日益发展，人们对于具显示功能的电子装置(如手机、电脑、平板等)的要求也越来越高，希望它们可集成更多的功能，从而实现更大的便利性。
举例来说，人们可能需要利用手机等电子装置测量一些距离，例如：利用超声波测量与他人间的距离，或房子的高度和长度等。
但是，现有的模块构造非常复杂，增加制造的难度，导致现有的具显示功能的电子装置应用超声波的整合性问题，仍待改善。
因此，现有技术存在缺陷，急需改进。
 技术问题
本发明提供一种封装构造，以解决现有技术所存在的具显示功能的电子装置应用超声波的整合性问题。
 技术解决方案
为了达成本发明的前述目的，本发明的一方面提供一种显示面板构造，其包括一显示区域及一换能区域，所述换能区域在所述显示区域内，所述换能区域包括：一背光源；两偏光板，平行设置在所述背光源上方；一显像组件，设置在所述两偏光板之间，所述显像组件包括一电路基板、一彩膜基板及一液晶层，所述电路基板邻近所述背光源，所述彩膜基板远离所述背光源，所述液晶层设置在所述电路基板与所述彩膜基板之间，所述彩膜基板为一彩色滤光片或一量子点显示膜片；一压电膜体，设置在所述彩膜基板上方，所述压电膜体包括一第一电极、一压电材料层及一第二电极，所述压电材料层设置在所述第一电极与所述第二电极之间；及一保护层，设置在所述压电膜体上方。
在本发明的一实施例中，所述压电膜体设置在所述彩膜基板与所述两偏光板中远离所述背光源的一个之间。
在本发明的一实施例中，所述压电膜体还包括两绝缘体，所述两绝缘体设置在所述第二电极背对所述压电材料层的一侧，所述两绝缘体与所述第二电极之间形成一空腔。
在本发明的一实施例中，所述显示面板构造还包括两柔性电路板及两集成电路，所述两集成电路分别经由所述两柔性电路板中的一个电性连接所述电路基板及所述彩膜基板。
在本发明的一实施例中，所述电性连接于所述彩膜基板的集成电路用以控制所述压电膜体收发超声波，所述超声波的频率范围处于25至100千赫之间。
在本发明的一实施例中，所述显示面板构造还包括一触控层，所述触控层设置在所述电路基板与所述保护层之间。
在本发明的一实施例中，所述触控层设置在以下的一位置：在所述保护层与所述两偏光板中远离所述背光源的一个之间；在所述两偏光板中远离所述背光源的一个与所述压电膜体之间；或在所述电路基板与所述彩膜基板之间。
为了达成本发明的前述目的，本发明的另一方面提供一种显示面板构造，包括一显示区域及一换能区域，所述换能区域在所述显示区域内，所述换能区域包括：一背光源；两偏光板，平行设置在所述背光源上方；一显像组件，设置在所述两偏光板之间，所述显像组件包括一电路基板、一彩膜基板及一液晶层，所述电路基板邻近所述背光源，所述彩膜基板远离所述背光源，所述液晶层设置在所述电路基板与所述彩膜基板之间；一压电膜体，设置在所述彩膜基板上方；及一保护层，设置在所述压电膜体上方。
在本发明的一实施例中，所述压电膜体可设置在所述彩膜基板与所述两偏光板中远离所述背光源的一个之间。
在本发明的一实施例中，所述压电膜体可包括一第一电极、一压电材料层及一第二电极，所述压电材料层设置在所述第一电极与所述第二电极之间。
在本发明的一实施例中，所述压电膜体还包括两绝缘体，所述两绝缘体设置在所述第二电极背对所述压电材料层的一侧，所述两绝缘体与所述第二电极之间形成一空腔。
在本发明的一实施例中，所述显示面板构造还可包括两柔性电路板及两集成电路，所述两集成电路分别经由所述两柔性电路板中的一个电性连接所述电路基板及所述彩膜基板。
在本发明的一实施例中，所述电性连接于所述彩膜基板的集成电路用以控制所述压电膜体收发超声波，所述超声波的频率范围处于25至100千赫之间。
在本发明的一实施例中，所述显示面板构造还可包括一触控层，所述触控层设置在所述电路基板与所述保护层之间。
在本发明的一实施例中，所述触控层可设置在以下的一位置：在所述保护层与所述两偏光板中远离所述背光源的一个之间；在所述两偏光板中远离所述背光源的一个与所述压电膜体之间；或在所述电路基板与所述彩膜基板之间。
在本发明的一实施例中，所述彩膜基板为一彩色滤光片或一量子点显示膜片。
为达成本发明的前述目的，本发明的另一方面提供一种电子装置，包括如上所述的显示面板构造。
 有益效果
与现有技术相比较，本发明的显示面板构造及电子装置，除可整合触控功能外，通过将可用于测距等功能的换能模块集成在显示面板构造的内部，例如：将所述压电膜体设置在所述彩膜基板的上方，不会明显增加显示面板构造的厚度，可保持轻薄的特性；所述换能模块的结构非常简单，易于制造，可降低制造的成本；所述换能模块无需额外开孔，可明显提高屏占比，提升用户体验。
 附图说明
图1是本发明一实施例电子装置示意图。
图2是本发明第一实施例显示面板构造的剖视示意图。
图3是本发明的压电膜体的一种构造示意图。
图4是本发明的压电膜体的另一种构造示意图。
图5是本发明第二实施例显示面板构造的剖视示意图。
图6是本发明第三实施例显示面板构造的剖视示意图。
 本发明的最佳实施方式
以下各实施例的说明是参考附加的图式，用以例示本发明可用以实施的特定实施例。再者，本发明所提到的方向用语，例如上、下、顶、底、前、后、左、右、内、外、侧面、周围、中央、水平、横向、垂直、纵向、轴向、径向、最上层或最下层等，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发明，而非用以限制本发明。
请参照图1所示，本发明一实施例电子装置D可包括一显示面板构造，例如：所述显示面板构造可包括一显示区域D1及一换能区域D2，所述显示区域D1可用于显示影像，所述显示区域D1可以是显示面板的一有效区域(active area)，所述换能区域D2在所述显示区域D1内，所述换能区域D2可以是任何形状，如圆形和方形等，用以提供超声波换能功能，且所述换能区域D2可位于所述显示区域D1中的任何一部分或全部，例如：所述换能区域D2也可覆盖整个所述显示区域D1。
应被理解的是，所述电子装置D是一种具显示功能的电子装置，例如：所述电子装置D可依实际需求被配置成手机、笔记本电脑、平板电脑或手表等可携式电子装置，但不以此为限，所述电子装置D也可以是固定式电子装置，例如高度计等，这是本领域技术人员可理解的。以下举例说明所述显示面板构造的一些实施例，但不以此为限。
举例来说，如图2所示，以所述换能区域D2为例，本发明第一实施例显示面板构造可包括：一背光源1、两偏光板2a、2b、一显像组件3、一压电膜体4及一保护层5。所述背光源1可以由现有液晶显示器的背光源模块构成，用以提供光源；所述两偏光板2a、2b可平行设置在所述背光源1上方，例如：所述偏光板2a可设置在所述背光源1上，所述偏光板2b与偏光板2a相对立，用以提供光偏振功能。
请再参阅图2所示，所述显像组件3可设置在所述两偏光板2a、2b之间，举例来说，所述显像组件3可以是液晶面板的一部分，例如：所述显像组件可包括一电路基板31、一彩膜基板32及一液晶层33，所述电路基板31邻近所述背光源1，例如：所述电路基板31可设置在邻近所述背光源1的偏光板2a上，所述电路基板31可以是具有薄膜晶体管阵列(TFT array)的玻璃基板，可用以控制显像内容；所述彩膜基板32远离所述背光源1，例如；所述彩膜基板32可设置在远离所述背光源1的偏光板2b，所述彩膜基板32可以是具有滤光或调光功能的玻璃基板，例如；所述玻璃基板可涂布红、蓝、绿色滤光材料，以形成一彩色滤光片(Color Filter，CF)，但不以此为限，所述滤光材料还可换成其它发光材料，如制作量子点(quantum dots)的材料，例如：由锌、镉、硒和硫原子组成极其微小的半导体纳米晶体，以应用QLED技术形成一量子点显示膜片；所述液晶层33设置在所述电路基板31与所述彩膜基板32之间，例如：TFT array玻璃与CF玻璃在真空对组制程，以光阻材料(photo spacer，PS)作为支撑，用以填充液晶材料，以形成所述液晶层33。
如图2所示，所述压电膜体4可设置在所述彩膜基板32上方，用以将电信号转换为超声波或将超声波转换为电信号，例如：所述压电膜体4设置在所述彩膜基板32与所述两偏光板2a、2b中远离所述背光源1的一个(如2b)之间，但不以此为限，所述压电膜体4还可依需求设置在所述彩膜基板32上方的其他位置，例如：在所述保护层5与偏光板2b之间的位置等。
从而，用于超声波转换功能的模块(如所述压电膜体4)无需额外开孔设置，可使得整个显示面板构造更加轻薄，并且所述压电膜体4与外界的超声波传输过程只需穿过更少的层数，可让超声波在传输过程中的损失更少，最后被接收到的信号强度也更强，从而利于信噪比的提升。
在一实施例中，如图3所示，所述压电膜体4可包括一第一电极41、一压电材料层42及一第二电极43，所述压电材料层42设置在所述第一电极41与所述第二电极43之间，例如：所述第一电极41及所述第二电极43中的至少一个的材料可选自于由以下元素组成的群组：银、铝、锰、金、铬、镍、铜及铅，或者，还可以选自透明电极(ITO)或其衍生物等，厚度范围可介于1至100微米(μm)；所述压电材料层42的材料可选自于压电陶瓷锆钛酸铅(PZT)、氮化铝(AlN)、聚偏氟乙烯(PVDF)或共聚物，例如：聚偏氟乙烯与三氟乙烯的共聚物(PVDF-TrFE)，其厚度范围可介于1至100微米。从而，可依实际需求调控所需的超声波转换功能，以适用于相关应用，如测距等。
在一实施例中，如图4所示，所述压电膜体4还可包括两绝缘体44a、44b，例如：所述两绝缘体44a、44b中的至少一个的材料可为丁基橡胶(butyl rubber)、丙烯酸酯橡胶(acrylate rubber)、丁腈橡胶(nitrile rubber)和硅橡胶(silicone rubber)、聚氨酯(polyurethane)、聚氯乙烯(polyvinyl chloride)或环氧树脂(epoxy resin)等，其厚度范围可介于1至100微米；所述两绝缘体44a、44b可设置在所述第二电极43背对所述压电材料层42的一侧，所述两绝缘体44a、44b与所述第二电极43之间可形成一空腔45。
从而，所述压电膜体4内部的空腔45可适应于所述压电膜体4的振动幅度较大、输出声压较大的情况；另外，通过所述两绝缘体44a、44b的设置，可提高所述压电膜体4的厚度，用以提高所述压电膜体4的输出声压，因而可使得所述换能模块能够测量更远的距离，并且信噪比更高。
请再参阅图2所示，所述保护层5可设置在所述压电膜体4上方，例如：所述保护层5的材料可以是用于液晶屏幕的保护玻璃，用以保护所述显示面板构造内部的各材料层。
在一实施例中，如图2所示，本发明显示面板构造还可包括两柔性电路板6a、6b及两集成电路7a、7b，所述两集成电路7a、7b可分别经由所述两柔性电路板6a、6b中的一个电性连接所述电路基板31及所述彩膜基板32，例如：所述集成电路7a可用于控制所述电路基板31，所述集成电路7b可用于控制所述压电膜体4产生超声波或接收超声波，及利用超声波作为测距等相应功能的依据，但不以此为限，所述集成电路7a、7b的功能还可被互换或整合。
在一实施例中，所述电性连接于所述彩膜基板32的集成电路7b可用以控制所述压电膜体4收发超声波，所述超声波的频率范围处于25至100千赫(kHz)之间的低频范围，诸如25、50、75或100 kHz等，可使得超声波具有更强的穿透效果，让穿透过程损失更小，以利实现长距离的测量，从而实现良好的超声波测距功能。
举例来说，当所述集成电路7b接收到一测距任务时，所述集成电路7b发出电信号，电信号传输给所述压电膜体4，使所述压电膜体4发生振动而产生超声波，用以发射超声波；当超声波遇到外界的物体的时候会发生反射，当超声波回传到所述压电膜体4时，超声波会转换成电信号，电信号可通过所述彩膜基板32传输到集成电路7b，或者，电信号也可通过所述电路基板31传输到集成电路7a，所述集成电路7a或7b可计算超声波传输所用的时间，而得出超声波传输的距离，作为测距功能的依据。
请再参阅图2所示，在一实施例中，所述显示面板构造还可包括一触控层8，例如：所述触控层8可以是用于触控屏幕的触控电极层，所述触控层8可设置在所述电路基板31与所述保护层5之间，例如：所述触控层8可依实际需求设置在所述液晶层33上方的位置。举例来说，如图2所示，所述触控层8可设置在所述保护层5与所述两偏光板2a、2b中远离所述背光源1的一个(如2b)之间；替代地，如图5所示，所述触控层8可设置在所述两偏光板2a、2b中远离所述背光源1的一个(如2b)与所述压电膜体4之间；替代地，如图6所示，所述触控层8可设置在所述电路基板31与所述彩膜基板32之间，例如：所述触控层8可设置在所述彩膜基板32的一侧。从而，使上述显示面板构造还可提供触控功能。
如图5及图6所示，本发明显示面板构造的第二、三实施例同样可包括上述背光源、偏光板、显像组件、压电膜体、保护层、柔性电路板、集成电路及触控层，第二、三实施例与第一实施例的差异在于，所述第二实施例的触控模块为on cell架构，所述第三实施例的触控模块为in cell架构。
本发明上述实施例显示面板构造及电子装置，除可整合触控功能外，通过将可用于测距等功能的换能模块集成在所述显示面板构造的内部，例如：将所述压电膜体设置在所述彩膜基板的上方，不会明显增加所述显示面板构造的厚度，可保持轻薄的特性；所述换能模块的结构非常简单，易于制造，可降低制造的成本；所述换能模块无需额外开孔，可明显提高屏占比，提升用户体验。

Claims (17)

  1. 一种显示面板构造，其包括一显示区域及一换能区域，所述换能区域在所述显示区域内，所述换能区域包括：
    一背光源；
    两偏光板，平行设置在所述背光源上方；
    一显像组件，设置在所述两偏光板之间，所述显像组件包括一电路基板、一彩膜基板及一液晶层，所述电路基板邻近所述背光源，所述彩膜基板远离所述背光源，所述液晶层设置在所述电路基板与所述彩膜基板之间，所述彩膜基板为一彩色滤光片或一量子点显示膜片；
    一压电膜体，设置在所述彩膜基板上方，所述压电膜体包括一第一电极、一压电材料层及一第二电极，所述压电材料层设置在所述第一电极与所述第二电极之间；及
    一保护层，设置在所述压电膜体上方。
  2. 如权利要求1所述的显示面板构造，其中所述压电膜体设置在所述彩膜基板与所述两偏光板中远离所述背光源的一个之间。
  3. 如权利要求1所述的显示面板构造，其中所述压电膜体还包括两绝缘体，所述两绝缘体设置在所述第二电极背对所述压电材料层的一侧，所述两绝缘体与所述第二电极之间形成一空腔。
  4. 如权利要求1所述的显示面板构造，还包括两柔性电路板及两集成电路，所述两集成电路分别经由所述两柔性电路板中的一个电性连接所述电路基板及所述彩膜基板。
  5. 如权利要求4所述的显示面板构造，其中所述电性连接于所述彩膜基板的集成电路用以控制所述压电膜体收发超声波，所述超声波的频率范围处于25至100千赫之间。
  6. 如权利要求1所述的显示面板构造，还包括一触控层，所述触控层设置在所述电路基板与所述保护层之间。
  7. 如权利要求6所述的显示面板构造，其中所述触控层设置在以下的一位置：
    在所述保护层与所述两偏光板中远离所述背光源的一个之间；
    在所述两偏光板中远离所述背光源的一个与所述压电膜体之间；或
    在所述电路基板与所述彩膜基板之间。
  8. 一种显示面板构造，其包括一显示区域及一换能区域，所述换能区域在所述显示区域内，所述换能区域包括：
    一背光源；
    两偏光板，平行设置在所述背光源上方；
    一显像组件，设置在所述两偏光板之间，所述显像组件包括一电路基板、一彩膜基板及一液晶层，所述电路基板邻近所述背光源，所述彩膜基板远离所述背光源，所述液晶层设置在所述电路基板与所述彩膜基板之间；
    一压电膜体，设置在所述彩膜基板上方；及
    一保护层，设置在所述压电膜体上方。
  9. 如权利要求8所述的显示面板构造，其中所述压电膜体设置在所述彩膜基板与所述两偏光板中远离所述背光源的一个之间。
  10. 如权利要求8所述的显示面板构造，其中所述压电膜体包括一第一电极、一压电材料层及一第二电极，所述压电材料层设置在所述第一电极与所述第二电极之间。
  11. 如权利要求10所述的显示面板构造，其中所述压电膜体还包括两绝缘体，所述两绝缘体设置在所述第二电极背对所述压电材料层的一侧，所述两绝缘体与所述第二电极之间形成一空腔。
  12. 如权利要求8所述的显示面板构造，其还包括两柔性电路板及两集成电路，所述两集成电路分别经由所述两柔性电路板中的一个电性连接所述电路基板及所述彩膜基板。
  13. 如权利要求12所述的显示面板构造，其中所述电性连接于所述彩膜基板的集成电路用以控制所述压电膜体收发超声波，所述超声波的频率范围处于25至100千赫之间。
  14. 如权利要求8所述的显示面板构造，其还包括一触控层，所述触控层设置在所述电路基板与所述保护层之间。
  15. 如权利要求14所述的显示面板构造，其中所述触控层设置在以下的一位置：
    在所述保护层与所述两偏光板中远离所述背光源的一个之间；
    在所述两偏光板中远离所述背光源的一个与所述压电膜体之间；或
    在所述电路基板与所述彩膜基板之间。
  16. 如权利要求8所述的显示面板构造，其中所述彩膜基板为一彩色滤光片或一量子点显示膜片。
  17. 一种电子装置，其包括一显示面板构造，所述显示面板构造包括一显示区域及一换能区域，所述换能区域在所述显示区域内，所述换能区域包括：
    一背光源；
    两偏光板，平行设置在所述背光源上方；
    一显像组件，设置在所述两偏光板之间，所述显像组件包括一电路基板、一彩膜基板及一液晶层，所述电路基板邻近所述背光源，所述彩膜基板远离所述背光源，所述液晶层设置在所述电路基板与所述彩膜基板之间；
    一压电膜体，设置在所述彩膜基板上方；及
    一保护层，设置在所述压电膜体上方。
PCT/CN2019/107465 2019-05-21 2019-09-24 显示面板构造及电子装置 WO2020232934A1 (zh)

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