WO2022161344A1 - Dispositif électronique et module d'affichage - Google Patents

Dispositif électronique et module d'affichage Download PDF

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Publication number
WO2022161344A1
WO2022161344A1 PCT/CN2022/073716 CN2022073716W WO2022161344A1 WO 2022161344 A1 WO2022161344 A1 WO 2022161344A1 CN 2022073716 W CN2022073716 W CN 2022073716W WO 2022161344 A1 WO2022161344 A1 WO 2022161344A1
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WO
WIPO (PCT)
Prior art keywords
layer
nfc
coil
display
display module
Prior art date
Application number
PCT/CN2022/073716
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English (en)
Chinese (zh)
Inventor
段进才
杨浩
Original Assignee
维沃移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Publication of WO2022161344A1 publication Critical patent/WO2022161344A1/fr

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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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication

Definitions

  • the application belongs to the technical field of communication equipment, and in particular relates to an electronic equipment and a display module.
  • the electronic device is configured with an NFC (Near Field Communication, short-range wireless communication) module.
  • the NFC module enables the electronic device to have a short-range wireless communication function.
  • electronic devices can be used for payment, motion monitoring, access control, etc. Obviously, this can further expand the application scenarios of electronic devices.
  • the electronic device is equipped with a display module, and the NFC module is attached to the back of the display module (ie, the surface opposite to the display surface of the display module), thereby realizing the stacked installation of the NFC module and the display module.
  • the NFC module is attached to the back of the display module (ie, the surface opposite to the display surface of the display module), thereby realizing the stacked installation of the NFC module and the display module.
  • such an assembly structure will lead to a larger thickness of the electronic device, and thus cannot meet the requirement of developing the electronic device in a thinner direction.
  • the purpose of the embodiment of the present application is to provide an electronic device and a display module, which can solve the problem that the thickness of the current display module is relatively thick.
  • the present invention discloses a display module, including an NFC module and a display screen;
  • the NFC module includes an NFC coil and an NFC ferrite
  • the display screen includes a cover plate, a polarizing layer and an insulating layer, the insulating layer and the cover plate are sequentially stacked on the polarizing layer, and the NFC coil is arranged on the side of the polarizing layer facing the cover plate and the NFC coil is located in the insulating layer, and the NFC ferrite is arranged on the side of the polarizing layer facing away from the cover plate.
  • the present invention provides an electronic device including the above display module.
  • the display module disclosed in the embodiment of the present application integrates an NFC module.
  • an insulating layer is stacked on the side of the polarizing layer facing the display direction of the display screen, and the NFC coil is deposited on the polarizing layer facing the display screen.
  • the surface on one side of the display direction is located in the insulating layer.
  • the NFC coil set up in this way effectively utilizes the space in the insulating layer and does not increase the thickness of the display module.
  • the NFC coil deposited on the surface of the polarizing layer will not The structure of the polarizing layer has an influence, so that the display stability of the display module is good.
  • FIG. 1 is a schematic diagram of a display module disclosed in an embodiment of the present application.
  • FIG. 2 is a schematic cross-sectional view of A-A of FIG. 1 in the display module disclosed in the embodiment of the present application.
  • 100-NFC module 110-NFC coil, 111-First coil end, 112-Second coil end, 120-NFC ferrite,
  • 200-display screen 210-cover plate, 211-transparent adhesive, 220-polarizing layer, 220a-end outer edge, 220b-first electrode sheet, 220c-second electrode sheet, 230-insulating layer, 240- Substrate layer, 250-protective layer, 260-touch layer, 270-encapsulation layer,
  • first, second and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and distinguish between “first”, “second”, etc.
  • the objects are usually of one type, and the number of objects is not limited.
  • the first object may be one or more than one.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the associated objects are in an "or” relationship.
  • an embodiment of the present application discloses a display module, which includes an NFC module 100 and a display screen 200 , and the display module can be applied to an electronic device.
  • the NFC module 100 can provide NFC functions for the electronic device, and the NFC module 100 can enable the electronic device to have near field communication functions such as payment, simulated access control, contact passing, browsing, and linking.
  • the display screen 200 is used to display images.
  • the display screen 200 includes a cover plate 210, a polarizing layer 220 and an insulating layer 230.
  • the insulating layer 230 and the cover plate 210 are sequentially stacked on the polarizing layer 220. Specifically, the cover plate 210, the insulating layer 230 and the polarizing layer 220 are formed along the The thickness directions are stacked one after the other.
  • the NFC module 100 includes the NFC coil 110 and the NFC ferrite 120, wherein the NFC coil 110 is disposed on the side of the polarizing layer 220 facing the cover plate 210, and the NFC coil 110 is disposed on the surface of the polarizing layer 220, because the polarizing layer 220 is disposed
  • the side with the NFC coil 110 is stacked with the insulating layer 230.
  • the NFC coil 110 is located in the insulating layer 230.
  • the insulating layer 230 can protect the NFC coil 110 and the polarizing layer 220 to prevent the NFC coil 110 from being short-circuited. 110 is stacked on the surface of the polarizing layer 220, and the structure of the polarizing layer 220 will not be changed for this purpose.
  • the NFC ferrite 120 is disposed on the side of the polarizing layer 220 that faces away from the insulating layer 230 .
  • the NFC ferrite 120 is made of a material with high magnetic permeability, and the NFC ferrite 120 can play the role of focusing magnetic flux , by increasing the magnetic field strength in the display module, the sensing distance of the NFC coil 110 is effectively increased, so that the display module has better NFC sensing performance.
  • the NFC ferrite 120 may be disposed on the back of the display screen 200 .
  • the NFC coil 110 is disposed on the polarizing layer 220, and the NFC coil 110 is located in the insulating layer 230.
  • the NFC coil 110 effectively utilizes the inner space of the insulating layer 230 and does not
  • the additional thickness of the display module is beneficial to the thinning of the display module, and further, the thinning of the electronic device using the display module is beneficial.
  • the NFC ferrite 120 is disposed on the side of the polarizing layer 220 facing away from the insulating layer 230 , and there is a certain distance between the NFC ferrite 120 and the NFC coil 110 to ensure a sufficient near field communication distance therebetween.
  • the NFC coil 110 when arranging the NFC coil 110, the NFC coil 110 may be deposited on the surface of the polarizing layer 220 facing the display direction of the display screen 200 first, and then the insulating layer 230 may be deposited on the polarizing layer 220.
  • the insulating layer 230 wraps the NFC coil 110 inside, which further reduces the technological difficulty of the display module.
  • a substrate layer 240 is stacked on the side of the polarizing layer 220 that faces away from the insulating layer 230 , and the cover plate 210 , the insulating layer 230 , the polarizing layer 220 and the substrate layer 240 are in the thickness direction of the four of them. Stacked in sequence, the cover plate 210 can protect the display module, the polarizing layer 220 can play the role of polarizing light, and the cover plate 210 and the insulating layer 230 can be connected by a light-transmitting adhesive 211 .
  • the substrate layer 240 is the basic component of the display screen 200 , and the substrate layer 240 can carry various components for mounting the display screen 200 .
  • the layer 240 can be a glass substrate, so it can transmit light.
  • the substrate layer 240 typically includes a superimposed upper and lower glass layer.
  • the light-transmitting connecting adhesive 211 may be an OCA (Optically Clear Adhesive, optical adhesive) adhesive layer.
  • the above-mentioned NFC coil 110 may also be disposed on one side of the cover plate 210, the side of the polarizing layer 220 facing away from the cover plate 210, or the opposite sides of the substrate layer 240 in the thickness direction thereof.
  • the coil 110 When the coil 110 is disposed on the cover plate 210 , it can be disposed on the side of the cover plate 210 that faces away from the display direction of the display screen 200 .
  • the insulating layer 230 also plays the role of protecting the NFC coil 110 .
  • the NFC coil 110 When the NFC coil 110 is disposed on the substrate layer 240, it can be disposed on the side of the substrate layer 240 facing away from the display direction of the display screen 200, or on the side of the substrate layer 240 facing the display direction of the display screen 200.
  • the insulating layer 230 is selectively disposed on the side of the substrate layer 240 facing away from the display direction of the display screen 200 or facing the display direction of the display screen 200 , and the insulating layer 230 should also cover the NFC coil 110 .
  • the NFC coil 110 When the NFC coil 110 is disposed on the substrate layer 240 or the cover plate 210 , the NFC coil 110 can also be disposed by means of deposition.
  • the insulating layer 230 is also deposited on the surface of the cover plate 210 or the substrate layer 240 by means of deposition. .
  • a backlight assembly is usually provided on the side of the substrate layer 240 facing away from the display direction of the display screen 200 .
  • the display screen 200 includes a display area 200a and a non-display area 200b, wherein the non-display area 200b is arranged around the display area 200a, the display area 200a can display image information, and the non-display area 200b serves as the boundary of the display screen 200, It plays the role of protecting the display area 200a.
  • the display area 200a has a corresponding projection position on the polarizing layer 220, which is a display projection
  • the non-display area 200b also has a corresponding projection position on the polarizing layer 220, and the projection position is a non-display projection, which is a non-display projection.
  • the projection will also be set around the display projection.
  • the NFC coil 110 can be arranged in multiple circles, and in order to reduce the influence of the NFC coil 110 on the display effect of the display screen 200 , the multi-circle NFC coil 110 should extend at the edge of the display screen 200 Specifically, a part of the NFC coil 110 is located in the non-display area 200b of the display screen 200, corresponding to the non-display projection area on the polarizing layer 220, and another part of the NFC coil 110 is located in the display area 200a of the display screen 200, and is the display area 200a
  • the position close to the non-display area 200b corresponds to the position on the polarizing layer 220 where the display projection is close to the non-display projection, so that the NFC coil 110 can be arranged in multiple circles while reducing the influence of the NFC coil 110 on the display effect of the display screen 200.
  • each circle of the NFC coil 110 arranged in multiple turns should be arranged on the same layer to avoid stacking of the NFC coil 110. .
  • the NFC coil 110 can use transparent wiring, transparent wiring.
  • the NFC coil 110 without any influence will not affect the display image of the display area 200a, thereby helping to increase the screen ratio of the display screen 200.
  • the material of the NFC coil 110 with transparent wiring can be indium tin oxide, TiAlTi or nano-silver, etc.
  • the NFC coil 110 When indium tin oxide and TiAlTi are used as the NFC coil 110, the NFC coil 110 is usually deposited by magnetron sputtering On the polarizing layer 220, when nano-silver is used as the NFC coil 110, the NFC coil 110 is usually deposited on the polarizing layer 220 by a solution coating method.
  • the thickness of the display module is further reduced, and correspondingly, the thickness of the insulating layer 230 can also be further reduced, thereby further reducing the overall thickness of the display module.
  • the NFC coil 110 includes a first coil end 111 adjacent to the center of the display screen 200 and a second coil end 112 adjacent to the edge of the display screen 200, so there is a certain distance between the first coil end 111 and the second coil end 112.
  • the display module of the embodiment of the present application may further include a flexible electrical connector 300 , one end of the flexible electrical connector 300 is electrically connected to the NFC coil 110, and the other end is electrically connected to the main board of the electronic device.
  • the second coil end 112 of the NFC coil 110 can be directly electrically connected to one end of the flexible electrical connector 300 because it is adjacent to the edge of the display screen 200 , while the first coil end 111 of the NFC coil 110 is connected to the display screen 200 directly.
  • the edges of the coils have a certain distance, so the first coil end 111 is electrically connected to one end of the flexible electrical connector 300 through the bridging trace 400 .
  • the flexible electrical connector 300 may be a flexible circuit board.
  • the bridging wire 400 When the NFC coil 110 is arranged in multiple turns, the bridging wire 400 will cross over part of the NFC coil 110. In order to avoid the short circuit caused by direct contact between the bridging wire 400 and part of the NFC coil 110, the surface of the bridging wire 400 can be covered with an insulating material . As the number of turns of the NFC coil 110 increases, the distance between the first coil end 111 and the edge of the display screen 200 will increase. Correspondingly, the length of the bridge wiring 400 should also increase. For the specific number of turns of the NFC coil 110 and The length of the bridge wiring 400 is not limited in this application.
  • the above-mentioned display screen 200 further includes a protective layer 250 , and the protective layer 250 is stacked on the side of the insulating layer 230 facing away from the polarizing layer 220 .
  • the bridging trace 400 will pass through the insulating layer 230 .
  • the protective layer 250 is stacked on the insulating layer 230 , the first part of the bridging trace 400 is In the insulating layer 230, the second part is in the protective layer 250, the protective layer 250 encapsulates the insulating layer 230 and the bridge wiring 400, and the protective layer 250 can serve the purpose of encapsulating the insulating layer 230 and the bridging wiring 400, Water vapor and oxygen are prevented from corroding the NFC coil 110 and the bridge wiring 400 , so as to achieve the purpose of protecting the NFC coil 110 and the bridge wiring 400 .
  • the protective layer 250 can be encapsulated glass of organic photoresist type.
  • the bridge wire 400 after the bridge wire 400 is drawn out from the first coil end 111 of the NFC coil 110, its first part located in the insulating layer 230 should not be in contact with the NFC coil 110. Specifically, the first part is connected to the NFC coil 110. There is an insulating layer 230 between the coils 110 , and the insulating layer 230 separates the NFC coil 110 from the first portion of the bridge wire 400 to prevent the bridge wire 400 and the NFC coil 110 from being contacted and short-circuited.
  • one end of the polarizing layer 220 has an end outer edge 220a
  • the insulating layer 230 forms a first projection on the polarizing layer 220
  • the end outer edge 220a forms a second projection on the polarizing layer 220
  • the first projection and the second projection are formed on the polarizing layer 220.
  • the projections are coplanar on the same layer, and the first projection is located on the side of the second projection. Therefore, the above-mentioned outer edge 220a of the end portion is the part where one end edge of the polarizing layer 220 extends to the side away from the center of the polarizing layer 220.
  • the insulating layer 230 is not stacked.
  • a first electrode sheet 220b and a second electrode sheet 220c are fixedly connected to the surface of the outer edge 220a of the end portion facing the display direction of the display screen 200, and the outer edge 220a of the end portion provides a mounting basis for the first electrode sheet 220b and the second electrode sheet 220c, and further For easy installation, the first electrode sheet 220b and the second electrode sheet 220c are electrical connectors, and the NFC coil 110 is connected to the flexible electrical connector 300 through the first electrode sheet 220b and the second electrode sheet 220c.
  • the electrode sheet 220c is provided with a connecting glue 600, so that the first electrode sheet 220b and the second electrode sheet 220c are connected to the flexible electrical connector 300, and then communicated with the main board of the electronic device.
  • the connecting glue 600 is more conducive to fixing the flexible electrical connector 300, thereby making the connection with the first electrode sheet 220b and the second electrode sheet 220c more stable. Bending at a larger angle, so as to protect the flexible electrical connector 300 .
  • the first coil end 111 of the NFC coil 110 is connected to the first electrode sheet 220b through the bridging wire 400. Therefore, the end of the bridging wire 400 away from the first coil end 111 extends to the outer edge 220a of the end, and the NFC coil
  • the second coil end 112 of the 110 is connected to the second electrode sheet 220c, and the flexible electrical connector 300 is connected to the first electrode sheet 220b and the second electrode sheet 220c at the same time, so the first electrode sheet 220b and the second electrode sheet 220c should be arranged close to each other , so that the flexible electrical connector 300 can be connected to both at the same time.
  • the distance between the first coil end 111 and the second coil end 112 should not be too large.
  • the first coil end 111 and the second coil end 112 are vertically
  • the pitch of the projections on the surface of the display screen 200 should be set smaller, so that the length of the bridge wiring 400 can be reduced, so that the performance stability of the display module disclosed in the embodiments of the present application is better.
  • the above-mentioned NFC coil 110, the first electrode sheet 220b and the second electrode sheet 220c are arranged on the same layer.
  • the above three can be arranged on the side of the polarizing layer 220 facing the display direction of the display screen 200, so that it can be
  • the redundant arrangement of the NFC coil 110 is reduced, and the thickness of the display module disclosed in the embodiments of the present application is not additionally increased.
  • a buffer layer 500 is stacked on the side of the above-mentioned display screen body facing away from the NFC coil 110 , the buffer layer 500 is arranged on the side of the polarizing layer 220 facing away from the insulating layer 230 , and the NFC ferrite 120 is stacked on the buffer layer.
  • the purpose of setting the buffer layer 500 is to protect the display screen 200. material.
  • the buffer layer 500 is disposed on the side of the substrate layer 240 facing away from the NFC coil 110 , so that the NFC ferrite 120 fixed on the buffer layer 500 and the NFC coil 110 can maintain a certain spacing.
  • the display module disclosed in the embodiments of the present application may further be provided with a touch layer 260 and an encapsulation layer 270.
  • the touch layer 260 is stacked on the side of the polarizing layer 220 facing away from the cover plate 210.
  • 260 can provide a touch function for the display module
  • the encapsulation layer 270 is stacked on the side of the substrate layer 240 facing the cover plate 210
  • the function of the encapsulation layer 270 is to encapsulate the substrate layer 240 .
  • an embodiment of the present application further discloses an electronic device including the above-mentioned display module.
  • the electronic device disclosed in the embodiments of the present application may be a smart phone, a tablet computer, an e-book reader, or a wearable device.
  • the electronic device may also be other devices, which are not limited in this embodiment of the present application.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)

Abstract

Un dispositif électronique et un module d'affichage sont divulgués. Le module d'affichage comprend un module NFC et un écran d'affichage, le module NFC comprenant une bobine NFC et une ferrite NFC, et l'écran d'affichage comprenant une plaque de couverture, une couche polarisante et une couche isolante. La couche isolante et la plaque de couverture sont empilées séquentiellement sur la couche de polarisation. La bobine NFC est disposée sur la surface de la couche polarisante faisant face à la plaque de couverture, et la bobine NFC est située à l'intérieur de la couche isolante. La ferrite NFC est disposée sur le côté de la couche de polarisation à l'opposé de la plaque de couverture.
PCT/CN2022/073716 2021-01-28 2022-01-25 Dispositif électronique et module d'affichage WO2022161344A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110118240.1A CN112817482B (zh) 2021-01-28 2021-01-28 电子设备及显示模组
CN202110118240.1 2021-01-28

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WO2022161344A1 true WO2022161344A1 (fr) 2022-08-04

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CN112785927B (zh) * 2021-01-28 2024-01-19 维沃移动通信有限公司 电子设备及显示模组
CN112927613B (zh) * 2021-01-28 2023-07-07 维沃移动通信有限公司 电子设备及显示模组
CN112817482B (zh) * 2021-01-28 2024-03-01 维沃移动通信有限公司 电子设备及显示模组
CN114464092B (zh) * 2022-02-14 2023-12-05 京东方科技集团股份有限公司 一种显示模组及其制备方法、显示装置

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CN110941113A (zh) * 2019-11-27 2020-03-31 上海天马微电子有限公司 显示装置及其制作方法
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CN112817482A (zh) * 2021-01-28 2021-05-18 维沃移动通信有限公司 电子设备及显示模组

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