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WO2019223726A1 - 触控显示装置及其制造方法 - Google Patents

触控显示装置及其制造方法 Download PDF

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Publication number
WO2019223726A1
WO2019223726A1 PCT/CN2019/087991 CN2019087991W WO2019223726A1 WO 2019223726 A1 WO2019223726 A1 WO 2019223726A1 CN 2019087991 W CN2019087991 W CN 2019087991W WO 2019223726 A1 WO2019223726 A1 WO 2019223726A1
Authority
WO
WIPO (PCT)
Prior art keywords
touch
flexible connection
display panel
display device
panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/087991
Other languages
English (en)
French (fr)
Inventor
罗鸿强
赵海瑞
吴建君
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
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 BOE Technology Group Co Ltd, Chengdu BOE Optoelectronics Technology Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to US16/753,558 priority Critical patent/US20200301558A1/en
Publication of WO2019223726A1 publication Critical patent/WO2019223726A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
    • 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
    • G02F1/1345—Conductors connecting electrodes to cell terminals
    • G02F1/13452—Conductors connecting driver circuitry and terminals of panels
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1643—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being associated to a digitizer, e.g. laptops that can be used as penpads
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H05K1/189—Printed circuits structurally associated with non-printed electric components characterised by the use of a flexible or folded printed circuit
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1626—Constructional details or arrangements for portable computers with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
    • H10K77/10—Substrates, e.g. flexible substrates
    • H10K77/111—Flexible substrates

Definitions

  • the present disclosure relates to the technical field of touch display, and in particular, to a touch display device and a manufacturing method thereof.
  • Narrow bezel screen touch display devices have become mainstream in the field of touch research.
  • OLED technology ultra-narrow bezel OLED touch display technology has become the main market for manufacturers in the world's display field.
  • a touch display device includes a display panel, a touch panel, and a touch driving circuit for driving the touch panel.
  • the touch panel is disposed at The light emitting side of the display panel, wherein the touch display device further includes a first flexible connection plate, a second flexible connection plate, and a third flexible connection plate, and one end of the first flexible connection plate is disposed facing away from The back side of the light emitting side of the display panel, the other end of the first flexible connecting plate is connected to the light emitting side of the display panel, the second flexible connecting plate is disposed on the back side of the display panel, and the A second flexible connection board is connected to the first flexible connection board; and the touch driving circuit is disposed on the second flexible connection board, and a first wiring is provided on the first flexible connection board.
  • the first flexible connection board or the display panel is provided with a binding end, and the first wiring electrically connects an output end of the touch driving circuit and the binding end, and the binding end is located at The display panel The light emitting side, and the third flexible connection board electrically connects the binding end and the input end of the touch panel.
  • the touch display device further includes a display driving circuit for driving a display panel, the display driving circuit is provided on the second flexible connection board, and the second flexible connection board is provided with a The second trace electrically connected to the display driving circuit and the input terminal of the display panel.
  • the second flexible connection board includes a main flexible connection board and a flip-chip film
  • the flip-chip film connects the main flexible connection board and the first flexible connection board
  • the touch driving circuit is disposed at
  • the first wiring is provided on the main flexible connection board, the flip-chip film, and the first flexible connection board
  • the display driving circuit is provided on the flip-chip film.
  • the second wiring is disposed on the flip-chip film and the first flexible connection board.
  • the display panel includes an organic light emitting diode display panel.
  • the touch display device includes a polarizer, and the polarizer is disposed on a surface of the touch panel facing away from the display panel.
  • the touch display device includes a protective cover, and the protective cover is disposed on a light emitting side of the polarizer.
  • the touch display device further includes a first transparent adhesive layer, and the first transparent adhesive layer is disposed between the protective cover and the polarizer to connect the protective cover and the polarizer.
  • the polarizers are bonded together.
  • the touch display device includes a second transparent adhesive layer, and the second transparent adhesive layer is disposed between the touch panel and the display panel to bond the touch panel On the display panel.
  • the touch display device further includes a heat sink, the heat sink is attached to the back side of the display panel, and one end of the first flexible connection plate is fixedly connected to the heat sink.
  • the touch display device includes a third adhesive layer disposed between the first flexible connecting plate and a side of the heat sink facing away from the display panel.
  • the binding end is disposed at a portion of the display panel that is connected to the first flexible connection plate.
  • a method for manufacturing a touch display device includes a display panel, a touch panel, a touch driving circuit for driving the touch panel, and a first flexibility.
  • a connection board, a second flexible connection board, and a third flexible connection board, and a first end of the first flexible connection board is connected to the display panel, wherein the manufacturing method includes: The second end is connected to the second flexible connection board, and the touch driving circuit is provided on the second flexible connection board.
  • the touch panel is adhered to the light-exiting side of the display panel.
  • the third flexible connection board electrically connected to the input end of the touch panel is connected to a binding end, wherein the binding end is disposed on the first flexible connection board or the first flexible connection board of the light emitting side of the display panel.
  • the display panel, and an output end of the touch driving circuit is electrically connected to the binding end through a first trace provided on the first flexible connection board, and by bending the first flexible Connection plate, the first A second end of the connecting plate facing away from the adhesive on the display light outgoing side of the display panel side of the back panel.
  • the manufacturing method further includes: providing a display driving circuit for driving the display panel on the second flexible connection board, wherein the second flexible connection board is provided with the A second trace electrically connected to the display driving circuit and the input terminal of the display panel.
  • the manufacturing method further includes: adhering a polarizer on a surface of the touch panel facing away from the display panel, adhering a protective cover on a light emitting side of the polarizer, and A heat sink is attached to the back side of the display panel, and the second end of the first flexible connecting plate is fixedly connected to the heat sink.
  • FIG. 1 is a schematic side structural view of the touch display device in a folded state provided by the related art
  • FIG. 2 is a schematic structural side view of the touch display device according to the present disclosure in a folded state
  • FIG. 3 is a schematic plan view of the touch display device according to the present disclosure in an unfolded state
  • FIG. 4 is a block diagram of a method for manufacturing a touch display device provided by the present disclosure.
  • a touch display device provided by the related art shown in FIG. 1 includes a touch panel 101 and a display panel 102.
  • the touch display device further includes:
  • the touch driving circuit 103 includes a touch driving circuit 103 and a display driving circuit 107, wherein the touch driving circuit 103 is connected to the touch panel 101 through a touch flexible circuit board 106 ′.
  • the left side of the display edge line AA is the display area of the touch display device
  • the right side of the display edge line AA is the frame area of the touch display device.
  • the border region includes a first bending region and a second bending region.
  • a tangent line parallel to the display edge line AA passing through the outermost bending point of the flexible connecting plate 104 'for display is formed as a first bending region edge line BB, and passing through the outermost bending point of the flexible connecting plate 106' for touch.
  • a tangent line parallel to the display edge line AA is formed as the second bending area edge line CC.
  • the distance between the display edge line AA and the first bending area edge line BB is a; the distance between the first bending area edge line BB and the second bending area edge line CC is b; that is, The width of the frame of the touch display device is at least a + b, which is difficult to meet the requirements of a narrow frame.
  • the touch display device 100 includes a display panel 102, a touch panel 101, and a touch driving circuit 103 for driving the touch panel 101.
  • the touch panel 101 is disposed on the light-emitting side of the display panel 102.
  • the touch display device 100 includes a first flexible connection plate 104, a second flexible connection plate 105, and a third flexible connection plate 106.
  • One end is disposed on the back side of the light exit side facing away from the display panel 102, the other end of the first flexible connection plate 104 is connected to the light exit side of the display panel 102, the second flexible connection plate 105 is disposed on the back side of the display panel 102, The two flexible connecting plates 105 are connected to the first flexible connecting plate 104.
  • the touch driving circuit 103 is disposed on the second flexible connection plate 105, the first flexible connection plate 104 is provided with a first trace, and the first flexible connection plate 104 or the display panel 102 is provided with a binding end.
  • the first wiring electrically connects the output terminal of the touch driving circuit 103 and the binding terminal, and the binding terminal is located on the light-emitting side of the display panel 102, and the third flexible connecting plate 106 binds the binding
  • the fixed terminal is electrically connected to the input terminal of the touch panel 101.
  • the touch panel 101 is disposed on the light-emitting side of the display panel 102.
  • the "back side” and “light-emitting side” of the display panel are shown in FIG.
  • a side of 101 is defined as a back side of the display panel 102
  • a side of the display panel 102 facing the touch panel 101 is defined as a light emitting side of the display panel 102.
  • the first flexible connection plate 104 connects the second flexible connection plate 105 and the display panel 102 and is disposed between the two, to realize the electrical connection between the touch driving circuit 103 and the touch panel 101.
  • first flexible connecting plate 104 is disposed on the back side facing away from the light emitting side of the display panel 102, the other end of the first flexible connecting plate 104 is connected to the light emitting side of the display panel 102, and the second flexible connecting plate 105
  • the first flexible connection plate 104 is provided on the back side of the display panel 102, and one end of the first flexible connection plate 104 provided on the back side of the display panel 102 is connected to the second flexible connection plate 105.
  • a first wiring (not shown in the figure) is provided on the first flexible connecting plate 104, and a binding end (not shown in the figure) is provided on the first flexible connecting plate 104 or the display panel 102. ),
  • the output terminal of the touch driving circuit 103 can be electrically connected to the binding terminal through the first trace, and the binding terminal is electrically connected to the input terminal of the touch panel 101 through a third flexible connection board 106.
  • the binding end is used to be electrically connected to the output end of the touch driving circuit and the input end of the touch panel, respectively.
  • the binding end may be a touch bonding pin (Touch Bonding Pin).
  • the binding ends are located on the light-emitting side of the display panel 102, when the binding ends are disposed on the first flexible connection plate 104, the binding ends may be located at both ends of the first flexible connection plate 104.
  • One end of the display panel 102 is located on a light emitting side of the display panel 102.
  • the binding end may also be disposed at other positions of the first flexible connecting plate 104, as long as the binding end is located on the light emitting side of the display panel 102.
  • the binding end may be disposed at a portion of the first flexible connection plate 104 that is connected to the display panel 102.
  • the binding end may be disposed on the display panel 102.
  • the binding end may be disposed at a portion of the display panel that is connected to the first flexible connection plate, and further, the length of the third flexible connection plate 106 may be designed to be shorter.
  • the third flexible connection board 106 electrically connects the input end of the touch panel 101 and the binding end, and the first flexible connection board 104 is electrically connected to the light-emitting side of the display panel 102, thereby realizing the touch driving circuit 103 and touch. Electrical connection of the panel 101.
  • the present disclosure provides the touch driving circuit on the second flexible connection board, the second flexible connection board is electrically connected to the first flexible connection board, and the light output side of the display panel is ,
  • the binding end is provided on the first flexible connection board or the display panel, the binding end is located on a light emitting side of the display panel, and is electrically connected to the touch panel through a third flexible connection board Input terminal and the binding terminal, thereby realizing the electrical connection between the touch panel and the touch driving circuit, avoiding the direct connection of the input terminal of the touch panel with the output terminal of the touch driving circuit, thereby greatly reducing
  • the length of the third flexible connecting plate further reducing or even eliminating the width of the frame caused by the bending of the third flexible connecting plate, which is beneficial to realize the narrow frame design of the touch display device and reduce the production cost.
  • the touch display device provided by the present disclosure is shown in FIG. 2, and the third flexible connecting plate 106 is located on the light exit side of the display panel 102, and there is no bend of the related-art touch flexible circuit board 106 ′ shown in FIG. 1.
  • the folds therefore eliminate the border width b.
  • the value of a is usually in the range of 2500 ⁇ m to 2700 ⁇ m
  • the value of b is in the range of 300 ⁇ m to 500 ⁇ m.
  • the frame width of the touch display device must be reduced by at least 300 ⁇ m.
  • the touch display device 100 further includes a display driving circuit 107 for driving the display panel 102.
  • the display driving circuit 107 is disposed on the second flexible connection plate 105.
  • the connecting plate 105 is provided with a second trace electrically connecting the display driving circuit 107 and the input terminal of the display panel 102.
  • the second flexible connecting plate 105 is provided with the second wiring, and the second wiring is used to connect the display driving circuit 107 and the input terminal of the display panel 102 provided on the second flexible connecting plate 105. It is electrically connected to ensure that the display panel 102 can work normally.
  • the second flexible connecting plate 105 is provided with a second wiring, but the second wiring is not only provided on the second flexible connecting plate 105. According to the position of the input end of the display panel 102, the second wiring may be further disposed on the first flexible connection board 104 and the display panel 102.
  • the second flexible connection plate 105 includes a main flexible connection plate 1051 and a flip-chip film 1052, and the flip-chip film 1052 connects the main flexible connection plate 1051 and the first flexible connection.
  • 104 Plate 104.
  • the touch driving circuit 103 is disposed on the main flexible connection board 1051, and the first wiring is disposed on the main flexible connection board 1051, the flip-chip film 1052 and the first flexible connection board 104.
  • the display driving circuit 107 is disposed on the flip-chip film 1052, and the second trace is disposed on the flip-chip film 1052 and the first flexible connection board.
  • the touch driving circuit 103 is disposed on the main flexible connection board 1051.
  • the first wiring includes a portion provided on the first flexible connection board.
  • a portion provided on the main flexible connection plate 1051 and the flip-chip film 1052 is included.
  • the second wiring includes a portion provided on the flip-chip film 1052 and a portion provided on the first flexible connection plate 104. .
  • main flexible connecting plate 1051 and the flip-chip thin film 1052 are bound by an anisotropic conductive adhesive. While cooperating with the first and second wires, the main flexible connecting plate 1051 and the flip-chip are ensured. The position of the film 1052 is relatively fixed. Similarly, the flip-chip film 1052 and the first flexible connecting plate 104 can also be bound by an anisotropic conductive adhesive to achieve relative position fixation.
  • the display panel 102 may be an organic light emitting diode display panel.
  • the touch driving circuit 103 may include a touch driving chip; the display driving circuit 107 may include a display driving chip.
  • the touch display device 100 includes a polarizer 108, which is disposed on a surface of the touch panel 101 facing away from the display panel 102.
  • the polarizing plate 108 is provided on the light emitting side of the display panel 102. Specifically, the polarizing plate 108 is adhered to the side of the touch panel facing away from the light emitting side of the display panel.
  • the display panel 102 is selected as an organic light emitting diode display panel, and the polarizer 108 is selected as a 1/4 wave plate.
  • the polarizer 108 is mainly used to prevent light reflection on the light-emitting side of the touch display device.
  • the touch panel 101 includes a touch electrode 1011 and a touch substrate 1012.
  • the touch display device 100 includes a protective cover 111, and the protective cover 111 is disposed on the light exit side of the polarizer 108.
  • the protective cover 111 is provided on the outermost side of the light emitting surface of the entire touch display device 100 to protect the internal structure of the touch display device 100.
  • the touch display device 100 further includes a first transparent adhesive layer 110, and the first transparent adhesive layer 110 is disposed between the protective cover plate 111 and the polarizer 108, so that the protective cover plate 111 and The polarizers 108 are bonded together.
  • the first transparent adhesive layer 110 is disposed between the protective cover 111 and the polarizer 108. Specifically, the first transparent adhesive layer 110 is respectively connected to the light exit surface of the polarizer 108 and the light entrance surface of the protective cover. By bonding, the protective cover plate 111 and the polarizer 108 are bonded together so that the positions of the two are relatively fixed.
  • the first transparent adhesive layer may also be a transparent optical tape.
  • the touch display device 100 includes a second transparent adhesive layer 109, and the second transparent adhesive layer 109 is disposed between the touch panel 101 and the display panel 102 so that The touch panel is adhered to the display panel.
  • the second transparent adhesive layer 109 may also be a transparent optical tape.
  • the touch display device 100 further includes a heat sink 112, which is attached to the back side of the display panel 102, and one end of the first flexible connection plate 104 is fixedly connected to the heat sink 112.
  • the present disclosure affixes a heat sink 112 to the back of the display panel 102, and transmits the heat of the display panel 102 in time through the heat sink 112 to reduce the temperature of the display panel.
  • the opposite end of the first flexible connecting plate 104 and the binding end is fixedly connected to the heat sink 112, which can effectively reduce the frame width of the compressed touch display device 100 and realize a narrow frame.
  • one end of the first flexible connection plate 104 is connected to the light emitting side of the display panel along the length direction of the first flexible connection plate, and the other end is fixedly connected to the heat sink 112 so that the first flexible connection plate 104 is bent, thereby enabling the touch driving circuit 103
  • the display driving circuit 107 can be disposed on the back of the display panel 102, so as to realize the narrow frame design of the touch display device 100.
  • the touch display device 100 includes a third adhesive layer 113, and the third adhesive layer 113 is disposed on the first flexible connection. Between the plate 104 and the side of the heat sink 112 facing away from the display panel 102.
  • the arrangement of the third adhesive layer 113 can achieve one end of the first flexible connecting plate 104 to be fixedly connected to the heat sink 112, and further fix the touch driving circuit 103 and the display provided on the back of the display panel 102.
  • the driving circuit 107 finally achieves the narrow frame of the touch display device 100.
  • the heat sink may be made of a metal material with good heat dissipation performance
  • the third adhesive layer 113 may be foamed plastic.
  • the touch display device 100 includes a display panel 102, a touch panel 101, and a touch driving circuit 103 for driving the touch panel.
  • a first flexible connecting plate 104, a second flexible connecting plate 105, and a third flexible connecting plate 106, a first end of the first flexible connecting plate 104 is connected to the display panel 102, wherein the manufacturing method includes:
  • the third flexible connecting plate 106 is connected in length.
  • the third flexible connecting plate 106 (acting as a transfer function) connected to the input end of the touch panel 101 is directly connected to the first flexible connecting plate 104 or the light emitting side of the display panel 102.
  • the length of the third flexible connecting plate is greatly reduced, and the width of the frame due to the bending of the third flexible connecting plate is further reduced or even eliminated, which is conducive to the narrow frame design of the touch display device. And reduce production costs.
  • the manufacturing method may further include: providing a display driving circuit 107 for driving the display panel 102 on the second flexible connection plate 105, wherein the second The flexible connecting plate 105 is provided with a second trace electrically connecting the display driving circuit 107 and an input terminal of the display panel 102.
  • the manufacturing method may further include: adhering a polarizer 108 on a surface of the touch panel 101 facing away from the display panel 102,
  • a protective cover 111 is adhered to the light exit side of the polarizer 108, and
  • the heat sink 112 is attached to the back side of the display panel 102, and the second end of the first flexible connecting plate 104 is fixedly connected to the heat sink 112.
  • the bonding method can be transparent optical tape or styrofoam for sticking.
  • the steps of the above manufacturing method are not strictly limited as long as the touch display device can be manufactured.

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Abstract

本公开提供了一种触控显示装置及其制造方法，所述触控显示装置包括显示面板、触控面板和用于驱动触控面板的触控驱动电路，触控面板设置在显示面板的出光侧，其中，触控显示装置还包括第一柔性连接板、第二柔性连接板和第三柔性连接板，第一柔性连接板或显示面板上设置有绑定端，第一走线将触控驱动电路的输出端与绑定端电连接，且绑定端位于显示面板的出光侧，并且，第三柔性连接板将绑定端与触控面板的输入端电连接。

Description

触控显示装置及其制造方法
相关申请的交叉引用
本申请要求于2018年5月25日提交至中国知识产权局，发明名称为“一种触控显示装置”的中国专利申请NO.201820800606.7的优先权，其所公开的内容以引用的方式合并于此。
技术领域
本公开涉及触控显示技术领域，具体地，涉及一种触控显示装置及其制造方法。
背景技术
随着触控显示技术的不断发展，消费者对于触控显示屏幕的需求和标准也逐渐提高。窄边框屏触控显示设备成为当下触控研究领域的主流。随着OLED技术的兴起，超窄边框OLED触控显示技术则成为了世界显示领域生产制造商争夺的主要市场。
因此，如何使得触控显示装置具有更窄的边框成为本领域亟待解决的技术问题。
公开内容
本公开的一个方面，提供了一种触控显示装置，所述触控显示装置包括显示面板、触控面板和用于驱动所述触控面板的触控驱动电路，所述触控面板设置在所述显示面板的出光侧，其中，所述触控显示装置还包括第一柔性连接板、第二柔性连接板和第三柔性连接板，所述第一柔性连接板的一端设置在背向所述显示面板的出光侧的背面侧，所述第一柔性连接板的另一端连接至所述显示面板的出光侧，所述第二柔性连接板设置在所述显示面板的背面侧，且所述第二柔性连接板与所述第一柔性连接板相连；以及，所述触控驱动电路设置在 所述第二柔性连接板上，所述第一柔性连接板上设置有第一走线，所述第一柔性连接板或所述显示面板上设置有绑定端，所述第一走线将所述触控驱动电路的输出端与所述绑定端电连接，且所述绑定端位于所述显示面板的出光侧，并且，所述第三柔性连接板将所述绑定端与所述触控面板的输入端电连接。
可选地，所述触控显示装置还包括用于驱动显示面板的显示驱动电路，所述显示驱动电路设置在所述第二柔性连接板上，所述第二柔性连接板上设置有将所述显示驱动电路与所述显示面板的输入端电连接的第二走线。
可选地，所述第二柔性连接板包括主柔性连接板和覆晶薄膜，所述覆晶薄膜连接所述主柔性连接板和所述第一柔性连接板，所述触控驱动电路设置在所述主柔性连接板上，所述第一走线设置在所述主柔性连接板、所述覆晶薄膜和所述第一柔性连接板上；所述显示驱动电路设置在所述覆晶薄膜上，所述第二走线设置在所述覆晶薄膜和所述第一柔性连接板上。
可选地，所述显示面板包括有机发光二极管显示面板。
可选地，所述触控显示装置包括偏光片，所述偏光片设置在所述触控面板的背离所述显示面板的表面上。
可选地，所述触控显示装置包括保护盖板，所述保护盖板设置在所述偏光片的出光侧。
可选地，所述触控显示装置还包括第一透明粘合层，所述第一透明粘合层设置在所述保护盖板与所述偏光片之间，以将所述保护盖板与所述偏光片粘结在一起。
可选地，所述触控显示装置包括第二透明粘合层，所述第二透明粘合层设置于所述触控面板与所述显示面板之间，以将所述触控面板粘结在所述显示面板上。
可选地，所述触控显示装置还包括散热片，所述散热片贴合于所述显示面板的背面侧，所述第一柔性连接板的一端与所述散热片固定连接。
可选地，所述触控显示装置包括第三粘合层，所述第三粘合层 设置于所述第一柔性连接板与所述散热片背离所述显示面板的一侧之间。
可选地，所述绑定端设置在所述显示面板上的与所述第一柔性连接板相连接的部分处。
本公开的另一个方面，提供了一种触控显示装置的制造方法，所述触控显示装置包括显示面板、触控面板、用于驱动所述触控面板的触控驱动电路、第一柔性连接板、第二柔性连接板和第三柔性连接板，所述第一柔性连接板的第一端与所述显示面板相连，其中，所述制造方法包括：将所述第一柔性连接板的第二端与所述第二柔性连接板相连，并在所述第二柔性连接板上设置所述触控驱动电路，将所述触控面板粘合在所述显示面板的出光侧，将与所述触控面板的输入端电连接的所述第三柔性连接板连接至绑定端，其中，所述绑定端设置在所述显示面板的出光侧的所述第一柔性连接板或所述显示面板上，并且所述触控驱动电路的输出端通过设置在所述第一柔性连接板上的第一走线与所述绑定端电连接，以及，通过弯折所述第一柔性连接板，将所述第一柔性连接板的第二端粘合在背向所述显示面板的出光侧的所述显示面板的背面侧。
可选地，所述的制造方法，还包括：在所述第二柔性连接板上设置用于驱动所述显示面板的显示驱动电路，其中，所述第二柔性连接板上设置有将所述显示驱动电路与所述显示面板的输入端电连接的第二走线。
可选地，所述的制造方法，还包括：将偏光片粘合在所述触控面板的背离所述显示面板的表面上，将保护盖板粘合在所述偏光片的出光侧，以及，将散热片贴合于所述显示面板的背面侧，所述第一柔性连接板的第二端与所述散热片固定连接。
附图说明
附图是用来提供对本公开的进一步理解，并且构成说明书的一部分，与下面的具体实施方式一起用于解释本公开，但并不构成对本公开的限制。在附图中：
图1是相关技术所提供的所述触控显示装置弯折状态下的侧视结构示意图；
图2是本公开所提供的所述触控显示装置弯折状态下的侧视结构示意图；
图3是本公开所提供的所述触控显示装置展开状态下的俯视结构示意图；
图4是本公开所提供的触控显示装置的制造方法的方框图。
具体实施方式
以下结合附图对本公开的具体实施方式进行详细说明。应当理解的是，此处所描述的具体实施方式仅用于说明和解释本公开，并不用于限制本公开。
图1中所示的相关技术提供的一种触控显示装置，该触控显示装置包括触控面板101和显示面板102，为了对触控面板101和显示面板102进行驱动，触控显示装置还包括触控驱动电路103和显示驱动电路107，其中，触控驱动电路103通过触控用柔性线路板106’与触控面板101连接。
进一步地，如图1所示，显示边缘线AA的左侧为所述触控显示装置的显示区，显示边缘线AA右侧是触控显示装置的边框区域。所述边框区域包括第一弯折区和第二弯折区。具体地，经过显示用柔性连接板104’最外部弯折点的与显示边缘线AA平行的切线形成为第一弯折区边缘线BB，经过触控用柔性连接板106’最外部弯折点与显示边缘线AA平行的切线形成为第二弯折区边缘线CC。其中，显示边缘线AA至第一弯折区边缘线BB之间的距离是a；第一弯折区边缘线BB至第二弯折区边缘线CC之间的距离是b；也就是说，上述触控显示装置的边框宽度至少是a+b，难以满足窄边框的需求。
作为本公开的一个方面，提供了一种触控显示装置，如图2所示，触控显示装置100包括显示面板102、触控面板101和用于驱动触控面板101的触控驱动电路103，触控面板101设置在显示面板102的出光侧，其中，触控显示装置100包括第一柔性连接板104、第二 柔性连接板105和第三柔性连接板106，第一柔性连接板104的一端设置在背向显示面板102的出光侧的背面侧，第一柔性连接板104的另一端连接至显示面板102的出光侧，第二柔性连接板105设置在显示面板102的背面侧，且第二柔性连接板105与第一柔性连接板104相连。
触控驱动电路103设置在第二柔性连接板105上，第一柔性连接板104上设置有第一走线，所述第一柔性连接板104或所述显示面板102上设置有绑定端，所述第一走线将触控驱动电路103的输出端与所述绑定端电连接，且所述绑定端位于显示面板102的出光侧，并且，第三柔性连接板106将所述绑定端与触控面板101的输入端电连接。
首先需要说明的是，触控面板101设置在显示面板102的出光侧，所述显示面板的“背面侧”和“出光侧”均是以图2所示为例，显示面板102远离触控面板101的一侧定义为显示面板102的背面侧，显示面板102朝向触控面板101的一侧定义为显示面板102的出光侧。当然上述限定仅是为便于本领域技术人员理解本公开的技术方案，并不对本公开构成限制。
如上所述，第一柔性连接板104连接第二柔性连接板105和显示面板102并设置在二者之间，用于实现触控驱动电路103与触控面板101的电连接。
具体地，第一柔性连接板104的一端设置在背向显示面板102的出光侧的背面侧，第一柔性连接板104的另一端连接至显示面板102的出光侧，而第二柔性连接板105设置在显示面板102的背面侧，进而将第一柔性连接板104设置在显示面板102的背面侧的一端与第二柔性连接板105连接。
进一步地，第一柔性连接板104上设置有第一走线(图中未示出)，所述第一柔性连接板104或所述显示面板102上设置有绑定端(图中未示出)，触控驱动电路103的输出端能够通过所述第一走线与所述绑定端电连接，通过第三柔性连接板106将所述绑定端与触控面板101的输入端电连接，从而实现上述触控驱动电路103与触控面 板101的电连接，进而保证触控显示装置100正常工作。需要说明的是，绑定端是用于分别于触控驱动电路的输出端以及触控面板的输入端电连接。作为本公开的一种可选的实施方式，绑定端可以是触碰接合引脚(Touch Bonding Pin)。
需要说明的是，由于所述绑定端位于显示面板102的出光侧，因此，当绑定端设置在第一柔性连接板104上时，绑定端可以位于第一柔性连接板104的两端中的位于显示面板102的出光侧的一端。当然，绑定端也可以设置在第一柔性连接板104的其他位置，只要绑定端位于所述显示面板102的出光侧即可。作为本公开一种可选地实施方式，所述绑定端可以设置于第一柔性连接板104上的与显示面板102相连接的部分处。或者，作为本公开另一种可选地实施方式，所述绑定端可以设置于显示面板102上。具体地，绑定端可以设置在所述显示面板上的与所述第一柔性连接板相连接的部分处，进而第三柔性连接板106的长度可以设计较短。第三柔性连接板106将触控面板101的输入端与所述绑定端电连接，而第一柔性连接板104与显示面板102的出光侧电连接，进而实现触控驱动电路103与触控面板101的电连接。
综上，本公开通过将所述触控驱动电路设置在所述第二柔性连接板上，所述第二柔性连接板与所述第一柔性连接板电连接，在所述显示面板的出光侧，在所述第一柔性连接板或所述显示面板上设置所述绑定端，所述绑定端位于所述显示面板的出光侧，通过第三柔性连接板电连接于所述触控面板的输入端和所述绑定端，进而实现了触控面板与触控驱动电路的电连接，避免了触控面板的输入端直接与所述触控驱动电路的输出端电连接，从而大幅缩减了所述第三柔性连接板的长度，进一步减小甚至消除了因所述第三柔性连接板弯折而产生的边框宽度，有利于实现所述触控显示装置的窄边框设计，并降低制作成本。
本公开所提供的触控显示装置如图2所示，第三柔性连接板106位于显示面板102的出光侧，不存在如图1所示的相关技术的触控用柔性线路板106’的弯折部，因此，消除了边框宽度b。相关技术的 参数指标中，通常a的取值范围值2500μm～2700μm，而b的取值范围是300μm～500μm，也就是说，利用本公开的技术方案得到的所述触控显示装置的边框相较于相关技术的所述触控显示装置的边框宽度至少要减少300μm。
在本公开中，如图2和图3所示，触控显示装置100还包括用于驱动显示面板102的显示驱动电路107，显示驱动电路107设置在第二柔性连接板105上，第二柔性连接板105上设置有将显示驱动电路107与显示面板102的输入端电连接的第二走线。
如上所述，在第二柔性连接板105上设置有第二走线，所述第二走线用于将设置在该第二柔性连接板105上的显示驱动电路107与显示面板102的输入端电连接，以保证显示面板102能够正常工作。应当理解的是，第二柔性连接板105上设置有第二走线，但是，第二走线并不仅仅设置在第二柔性连接板105上。根据显示面板102的输入端位置的不同，第二走线可能还设置在第一柔性连接板104和显示面板102上。
进一步地，在本公开中，如图2和图3所示，第二柔性连接板105包括主柔性连接板1051和覆晶薄膜1052，覆晶薄膜1052连接主柔性连接板1051和第一柔性连接板104。
触控驱动电路103设置在主柔性连接板1051上，所述第一走线设置在主柔性连接板1051、覆晶薄膜1052和第一柔性连接板104上。
显示驱动电路107设置在覆晶薄膜1052上，所述第二走线设置在覆晶薄膜1052和所述第一柔性连接板上。
如上所述，触控驱动电路103设置在主柔性连接板1051上，为了实现触控驱动电路与触控面板的电连接，所述第一走线除了包括设置在第一柔性连接板上的部分之外，还包括设置在主柔性连接板1051和覆晶薄膜1052上的部分。
相似地，为了实现显示驱动电路107与显示面板102的输入端之间的电连接，所述第二走线包括设置于覆晶薄膜1052上的部分和设置于第一柔性连接板104上的部分。
需要说明的是，主柔性连接板1051与覆晶薄膜1052通过各向 异性的导电胶绑定，配合上述第一走线、第二走线正常工作的同时，保证主柔性连接板1051与覆晶薄膜1052位置相对固定。类似地，覆晶薄膜1052与第一柔性连接板104也可以通过各向异性的导电胶绑定，以实现相对位置固定。
作为本公开一种优选地实施方式，显示面板102可以是有机发光二极管显示面板。
触控驱动电路103可以包括触控驱动芯片；显示驱动电路107可以包括显示驱动芯片。
在本公开中，如图2所示，触控显示装置100包括偏光片108，偏光片108设置在触控面板101的背离显示面板102的表面上。
如上所述，在显示面板102的出光侧设置有偏光片108，具体地，偏光片108与触控面板背离显示面板出光侧的一面贴合。
作为本公开一种可选地实施方式，显示面板102选取为有机发光二极管显示面板，偏光片108选取为1/4波片，该偏光108片主要用于防止触控显示装置的出光侧反光。
作为本公开再一种可选地实施方式，如图2所示，触控面板101包括触控电极1011和触控基板1012。
在本公开中，如图2所示，触控显示装置100包括保护盖板111，保护盖板111设置在偏光片108的出光侧。
如上所述，在整个触控显示装置100的出光面的最外侧设置有保护盖板111，用于保护触控显示装置100的内部结构。
进一步地，在本公开中，触控显示装置100还包括第一透明粘合层110，第一透明粘合层110设置在保护盖板111与偏光片108之间，以将保护盖板111与偏光片108粘结在一起。
如上所述，第一透明粘合层110设置在保护盖板111与偏光片108之间，具体地，第一透明粘合层110分别与偏光片108的出光面以及保护盖板的入光面贴合，进而将保护盖板111与偏光片108粘结在一起，使二者位置相对固定。
作为本公开一种可选地实施方式，第一透明粘合层也可以是透 明光学胶带。
进一步地，在本公开中，如图2所示，触控显示装置100包括第二透明粘合层109，第二透明粘合层109设置于触控面板101与显示面板102之间，以将所述触控面板粘结在所述显示面板上。
作为本公开一种可选地实施方式，第二透明粘合层109也可以是透明光学胶带。
在本公开中，如图2所示，触控显示装置100还包括散热片112，散热片112贴合于显示面板102的背面侧，第一柔性连接板104的一端与散热片112固定连接。
容易理解的是，由于显示面板102在工作过程中会发热，如果散热不及时显示面板102的温度会升高，显示面板102长期处于高温状态会影响其使用寿命。为此，本公开在显示面板102的背面贴合散热片112，通过散热片112将显示面板102的热量及时传递出去，以减低显示面板的温度。
第一柔性连接板104与所述绑定端的相对的一端与散热片112固定连接，能够有效降低压缩触控显示装置100的边框宽度，实现窄边框化。具体的，第一柔性连接板104沿自身长度方向，一端与显示面板的出光侧连接，另一端与散热片112固定连接，以使得第一柔性连接板104弯折，进而使得触控驱动电路103、显示驱动电路107能够设置于显示面板102的背面，从而实现触控显示装置100的窄边框设计。
进一步地，作为本公开一种可选地实施方式，在本公开中，如图2所示，触控显示装置100包括第三粘合层113，第三粘合层113设置于第一柔性连接板104与散热片112背离显示面板102的一侧之间。
容易理解的是，上述第三粘合层113的设置，可以实现第一柔性连接板104的一端与散热片112固定连接，并进一步固定设置于显示面板102背面的上述触控驱动电路103和显示驱动电路107，最终实现触控显示装置100的窄边框化的目的。
作为本公开一种可选地实施方式，散热片可以由散热性能良好 的金属材料制成，第三粘合层113可以是发泡胶。
作为本公开的另一个方面，提供一种触控显示装置的制造方法，所述触控显示装置100包括显示面板102、触控面板101、用于驱动所述触控面板的触控驱动电路103、第一柔性连接板104、第二柔性连接板105和第三柔性连接板106，所述第一柔性连接板104的第一端与所述显示面板102相连，其中，所述制造方法包括：
S1：将所述第一柔性连接：104的第二端与所述第二柔性连接板105相连，并在所述第二柔性连接板105上设置所述触控驱动电路103；
S2：将所述触控面板101粘合在所述显示面板102的出光侧，
S3：将与所述触控面板101的输入端电连接的所述第三柔性连接板106连接至绑定端，其中，所述绑定端设置在所述显示面板102的出光侧的所述第一柔性连接板104或所述显示面板102上，并且所述触控驱动电路103的输出端通过设置在所述第一柔性连接板104上的第一走线与所述绑定端电连接，以及
S4：通过弯折所述第一柔性连接板104，将所述第一柔性连接板104的第二端粘合在背向所述显示面板102的出光侧的所述显示面板102的背面侧。
通过在第一柔性连接板104或所述显示面板102上预留设置绑定端，以及，将触控驱动电路103的输出端集成在所述第二柔性连接板105上，能够减小起转接作用的第三柔性连接板106长度。将与所述触控面板101的输入端相连的第三柔性连接板106(起转接作用)直接连接在第一柔性连接板104或所述显示面板102的出光侧上。从而大幅缩减了所述第三柔性连接板的长度，进一步减小甚至消除了因所述第三柔性连接板弯折而产生的边框宽度，有利于实现所述触控显示装置的窄边框设计，并降低制作成本。作为本公开一种可选地实施方式，所述制造方法还可以包括：在所述第二柔性连接板105上设置用于驱动所述显示面板102的显示驱动电路107，其中，所述第二柔性连接板105上设置有将所述显示驱动电路107与所述显示面板102的输入端电连接的第二走线。
作为本公开一种可选地实施方式，所述制造方法还可以包括：将偏光片108粘合在所述触控面板101的背离所述显示面板102的表面上，
将保护盖板111粘合在所述偏光片108的出光侧，以及
将散热片112贴合于所述显示面板102的背面侧，所述第一柔性连接板104的第二端与所述散热片112固定连接。
可以理解的是，粘合方式可以采用透明光学胶带或发泡胶进行黏贴。此外，以上制造方法的步骤并没有严格的顺序限制，只要能够实现触控显示装置的制造即可。
可以理解的是，以上实施方式仅仅是为了说明本公开的原理而采用的示例性实施方式，然而本公开并不局限于此。对于本领域内的普通技术人员而言，在不脱离本公开的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本公开的保护范围。

Claims (14)

  1. 一种触控显示装置，所述触控显示装置包括显示面板、触控面板和用于驱动所述触控面板的触控驱动电路，所述触控面板设置在所述显示面板的出光侧，
    其中，所述触控显示装置还包括第一柔性连接板、第二柔性连接板和第三柔性连接板，所述第一柔性连接板的一端设置在背向所述显示面板的出光侧的背面侧，所述第一柔性连接板的另一端连接至所述显示面板的出光侧，所述第二柔性连接板设置在所述显示面板的背面侧，且所述第二柔性连接板与所述第一柔性连接板相连；以及
    所述触控驱动电路设置在所述第二柔性连接板上，所述第一柔性连接板上设置有第一走线，所述第一柔性连接板或所述显示面板上设置有绑定端，所述第一走线将所述触控驱动电路的输出端与所述绑定端电连接，且所述绑定端位于所述显示面板的出光侧，并且，所述第三柔性连接板将所述绑定端与所述触控面板的输入端电连接。
  2. 根据权利要求1所述的触控显示装置，其中，所述触控显示装置还包括用于驱动显示面板的显示驱动电路，所述显示驱动电路设置在所述第二柔性连接板上，所述第二柔性连接板上设置有将所述显示驱动电路与所述显示面板的输入端电连接的第二走线。
  3. 根据权利要求2所述的触控显示装置，其中，所述第二柔性连接板包括主柔性连接板和覆晶薄膜，所述覆晶薄膜连接所述主柔性连接板和所述第一柔性连接板，
    所述触控驱动电路设置在所述主柔性连接板上，所述第一走线设置在所述主柔性连接板、所述覆晶薄膜和所述第一柔性连接板上；
    所述显示驱动电路设置在所述覆晶薄膜上，所述第二走线设置在所述覆晶薄膜和所述第一柔性连接板上。
  4. 根据权利要求1至3中任意一项所述的触控显示装置，其中， 所述显示面板包括有机发光二极管显示面板。
  5. 根据权利要求4所述的触控显示装置，其中，所述触控显示装置包括偏光片，所述偏光片设置在所述触控面板的背离所述显示面板的表面上。
  6. 根据权利要求5所述的触控显示装置，其中，所述触控显示装置包括保护盖板，所述保护盖板设置在所述偏光片的出光侧。
  7. 根据权利要求6所述的触控显示装置，其中，所述触控显示装置还包括第一透明粘合层，所述第一透明粘合层设置在所述保护盖板与所述偏光片之间，以将所述保护盖板与所述偏光片粘结在一起。
  8. 根据权利要求7所述的触控显示装置，其中，所述触控显示装置包括第二透明粘合层，所述第二透明粘合层设置于所述触控面板与所述显示面板之间，以将所述触控面板粘结在所述显示面板上。
  9. 根据权利要求8所述的触控显示装置，其中，所述触控显示装置还包括散热片，所述散热片贴合于所述显示面板的背面侧，所述第一柔性连接板的一端与所述散热片固定连接。
  10. 根据权利要求9所述的触控显示装置，其中，所述触控显示装置包括第三粘合层，所述第三粘合层设置于所述第一柔性连接板与所述散热片背离所述显示面板的一侧之间。
  11. 根据权利要求10所述的触控显示装置，其中，所述绑定端设置在所述显示面板上的与所述第一柔性连接板相连接的部分处。
  12. 一种触控显示装置的制造方法，所述触控显示装置包括显示面板、触控面板、用于驱动所述触控面板的触控驱动电路、第一柔 性连接板、第二柔性连接板和第三柔性连接板，所述第一柔性连接板的第一端与所述显示面板相连，其中，所述制造方法包括：
    将所述第一柔性连接板的第二端与所述第二柔性连接板相连，并在所述第二柔性连接板上设置所述触控驱动电路，
    将所述触控面板粘合在所述显示面板的出光侧，
    将与所述触控面板的输入端电连接的所述第三柔性连接板连接至绑定端，其中，所述绑定端设置在所述显示面板的出光侧的所述第一柔性连接板或所述显示面板上，并且所述触控驱动电路的输出端通过设置在所述第一柔性连接板上的第一走线与所述绑定端电连接，以及
    通过弯折所述第一柔性连接板，将所述第一柔性连接板的第二端粘合在背向所述显示面板的出光侧的所述显示面板的背面侧。
  13. 根据权利要求12所述的制造方法，还包括：
    在所述第二柔性连接板上设置用于驱动所述显示面板的显示驱动电路，其中，所述第二柔性连接板上设置有将所述显示驱动电路与所述显示面板的输入端电连接的第二走线。
  14. 根据权利要求13所述的制造方法，还包括：
    将偏光片粘合在所述触控面板的背离所述显示面板的表面上，
    将保护盖板粘合在所述偏光片的出光侧，以及
    将散热片贴合于所述显示面板的背面侧，所述第一柔性连接板的第二端与所述散热片固定连接。
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