WO2021022522A1 - 显示装置及电子设备 - Google Patents

显示装置及电子设备 Download PDF

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Publication number
WO2021022522A1
WO2021022522A1 PCT/CN2019/099656 CN2019099656W WO2021022522A1 WO 2021022522 A1 WO2021022522 A1 WO 2021022522A1 CN 2019099656 W CN2019099656 W CN 2019099656W WO 2021022522 A1 WO2021022522 A1 WO 2021022522A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit board
flexible printed
display device
printed circuit
display panel
Prior art date
Application number
PCT/CN2019/099656
Other languages
English (en)
French (fr)
Inventor
张朋
雷嗣军
高贤永
孙艳生
李云松
邵新智
李登仟
陈善彬
孙佳
黎光照
冉博
许志财
陈碧超
Original Assignee
京东方科技集团股份有限公司
重庆京东方光电科技有限公司
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 京东方科技集团股份有限公司, 重庆京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US16/956,751 priority Critical patent/US11696403B2/en
Priority to CN201980001282.8A priority patent/CN112639663A/zh
Priority to PCT/CN2019/099656 priority patent/WO2021022522A1/zh
Publication of WO2021022522A1 publication Critical patent/WO2021022522A1/zh

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Classifications

    • 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
    • H05K1/02—Details
    • H05K1/14—Structural association of two or more printed circuits
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06F1/18—Packaging or power distribution
    • G06F1/181—Enclosures
    • G06F1/182—Enclosures with special features, e.g. for use in industrial environments; grounding or shielding against radio frequency interference [RFI] or electromagnetical interference [EMI]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06F1/1601—Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06F1/1615—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function
    • G06F1/1616—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06F1/1675—Miscellaneous details related to the relative movement between the different enclosures or enclosure parts
    • G06F1/1683—Miscellaneous details related to the relative movement between the different enclosures or enclosure parts for the transmission of signal or power between the different housings, e.g. details of wired or wireless communication, passage of cabling
    • 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
    • H05K1/02—Details
    • H05K1/0277—Bendability or stretchability details
    • H05K1/028—Bending or folding regions of flexible printed circuits
    • 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
    • H05K1/02—Details
    • H05K1/14—Structural association of two or more printed circuits
    • H05K1/147—Structural association of two or more printed circuits at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit
    • 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
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10128—Display
    • 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
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/36—Assembling printed circuits with other printed circuits
    • H05K3/361—Assembling flexible printed circuits with other printed circuits
    • 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
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/46—Manufacturing multilayer circuits
    • H05K3/4688—Composite multilayer circuits, i.e. comprising insulating layers having different properties
    • H05K3/4691—Rigid-flexible multilayer circuits comprising rigid and flexible layers, e.g. having in the bending regions only flexible layers

Definitions

  • the embodiments of the present disclosure relate to a display device and electronic equipment.
  • the narrow bezel design is a development trend of display devices, but there is no satisfactory solution currently. Although some display devices can narrow the frame, they usually make the display device thicker.
  • At least one embodiment of the present disclosure provides a display device, which includes:
  • the display panel includes a light-emitting side and a non-light-emitting side opposite to the light-emitting side;
  • a first circuit board electrically connected to the display panel and positioned on the non-light emitting side;
  • the second circuit board is configured to be electrically connected to the first circuit board, and the second circuit board includes a functional circuit signally connected to the display panel.
  • the first circuit board is configured to only provide electrical connections to the display panel and the second circuit board without non-signal processing capabilities.
  • the display panel includes a backlight source and a driving circuit, and at least one of the backlight source and the driving circuit of the display panel is electrically connected to the first circuit board .
  • the display device further includes a flexible printed circuit board configured to electrically connect the first circuit board with one of the following:
  • the display panel The display panel;
  • the second circuit board The second circuit board.
  • At least one of the first circuit board and the second circuit board is a non-flexible circuit board.
  • the flexible printed circuit board includes a first flexible printed circuit board, and the first flexible printed circuit board includes a first sub-flexible printed circuit board and a second sub-flexible printed circuit board.
  • the first sub-flexible printed circuit board is configured to electrically connect the backlight source of the display panel and the first circuit board, and
  • the second sub-flexible printed circuit board is configured to electrically connect the driving circuit of the display panel with the first circuit board.
  • the flexible printed circuit board further includes a second flexible printed circuit board, and the second flexible printed circuit board is configured to connect the first circuit board with the The second circuit board is electrically connected, and
  • the second flexible printed circuit board includes a snap-on connector, and the second circuit board includes a socket, and the snap-on connector can be mated with the socket to connect the first circuit board with the The second circuit board is electrically connected.
  • the flexible printed circuit board further includes a second flexible printed circuit board, and the second flexible printed circuit board is configured to connect the first circuit board with the The second circuit board is electrically connected, and
  • the display device further includes a rigid-flex board configured to electrically connect the second circuit board and the second flexible printed circuit.
  • the first circuit board includes a first wire configured to be connected between the first sub-flexible printed circuit board and the second flexible printed circuit board And a second wire, the first wire and the second wire are respectively a power supply wire and a signal transmission wire for the backlight of the display panel,
  • the first circuit board further includes a third wire and a fourth wire configured to be connected between the second sub-flexible printed circuit board and the second flexible printed circuit board, and
  • the display panel includes a fifth wire and a sixth wire configured to be connected between the second flexible printed circuit board and the driving circuit of the display panel, and the third wire and the fifth wire are used for The power supply wires of the driving circuit of the display panel, and the fourth wire and the sixth wire are signal transmission wires of the driving circuit of the display panel.
  • the first circuit board is a non-flexible circuit board with a thickness of less than 1 mm.
  • the first circuit board is a non-flexible circuit board having a multilayer structure.
  • the functional circuit includes at least one of the following: an interface circuit, a power supply circuit, and a signal processing circuit.
  • At least one embodiment of the present disclosure also provides an electronic device, which includes a display device according to any embodiment of the present disclosure.
  • the electronic device includes a first body and a second body that can be connected to each other, and
  • the first circuit board is located in the first body, and the second circuit board is located in the second body.
  • the first body and the second body are pivotally connected.
  • the electronic device further includes a connecting portion hingedly connected to at least one of the first body or the second body, and the first circuit board and the second circuit board pass through the The connecting parts are connected to each other.
  • the electronic device is a notebook computer
  • the display device is used as a display screen of the notebook computer
  • the second circuit board is located on the notebook computer.
  • the main body casing is stacked with the keyboard of the notebook computer.
  • At least one embodiment of the present disclosure also provides a method for preparing a display device according to any embodiment of the present disclosure, which includes:
  • the first circuit board and the second circuit board are electrically connected.
  • At least one embodiment of the present disclosure also provides a method of operating a display device according to any embodiment of the present disclosure, which includes:
  • Signals are transmitted between the functional circuit of the second circuit board and the display panel via the first circuit board.
  • FIG. 1 is a schematic structural diagram of a display device according to at least one embodiment of the present disclosure.
  • FIG. 2 is a schematic structural diagram of a display device according to at least one embodiment of the present disclosure.
  • FIG. 3 is a schematic diagram of a second flexible printed circuit board of a display device connected to the second circuit board through a snap-on connector according to at least one embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram of the second flexible printed circuit board of the display device according to at least one embodiment of the present disclosure connected to the second circuit board through a flexible and rigid bonding board.
  • FIG. 5 is a schematic diagram of wiring of a display device according to at least one embodiment of the present disclosure.
  • Fig. 6 is a schematic structural diagram of an electronic device according to at least one embodiment of the present disclosure.
  • FIG. 7 is a flowchart of a method of manufacturing a display device according to at least one embodiment of the present disclosure.
  • At least one embodiment of the present disclosure provides a display device that can narrow the frame of the display device without increasing the thickness of the display device, thereby realizing an ultra-thin and ultra-narrow design of the display device.
  • FIG. 1 is a schematic structural diagram of a display device according to at least one embodiment of the present disclosure.
  • the display device 100 includes a display panel 10, a first circuit board 20, and a second circuit board 30.
  • the display panel 10 includes a light-emitting side and a non-light-emitting side opposite to the light-emitting side.
  • the light emitting side refers to the side that displays the image to the user during use, that is, the display side.
  • the non-light emitting side of the display panel 10 is schematically shown.
  • the first circuit board 20 is electrically connected to the display panel 10 and is positioned on the non-light emitting side of the display panel 10.
  • the projection of the first circuit board 20 on the plane where the display panel 10 is located at least partially overlaps with the area where the display panel 10 is located.
  • the projection of the first circuit board 20 on the plane where the display panel 10 is located falls within the range of the display panel 10.
  • the second circuit board 30 is configured to be electrically connected to the first circuit board 20, and the second circuit board 30 includes a functional circuit signally connected to the 10 display panel.
  • first circuit board 20 and one second circuit board 30 are schematically shown in FIG. 1.
  • the display device 100 may also include other numbers of first circuits according to actual requirements.
  • the board 20 and the second circuit board 30, the embodiment of the present disclosure does not limit the number of the first circuit board 20 and the second circuit board 30 included in the display device 100.
  • the display panel 10 may be, for example, a liquid crystal panel, an organic light emitting diode (OLED) display panel, a quantum dot light emitting diode (QLED) display panel, an electronic paper panel, etc.
  • the display panel 10 may have any size and type, which is not limited by the embodiment of the present disclosure.
  • the display panel 10 may be a twisted nematic (TN) type liquid crystal panel, an advanced super dimensional field switching (ADS) type liquid crystal panel, an in-plane switching (IPS) type liquid crystal panel, a vertical alignment (VA) LCD panel, active matrix organic light emitting diode (AMOLED) display panel, passive matrix organic light emitting diode (PMOLED) display panel, etc.
  • the size of the display panel 10 may be 0.2 inch, 1 inch, 10 inch, 32 inch, 55 inch, 110 inch, etc.
  • the thickness of the first circuit board 20 is less than 1 mm.
  • the thickness of the first circuit board 20 may be less than or equal to 0.9 mm, 0.8 mm, 0.7 mm, 0.6 mm, 0.5 mm, 0.44 mm, etc.
  • the width of the first circuit board 20 may also be less than 5 mm.
  • the width of the first circuit board 20 may be less than or equal to 4 mm, 3 mm, etc.
  • the width mentioned here refers to the shorter of the extension distance of the first circuit board 20 in the X direction in FIG. 1 and the extension distance in the Y direction in FIG. 1. In FIG.
  • the width of the first circuit board 20 is the extension distance along the Y direction in FIG. 1.
  • the above-mentioned size of the first circuit board 20 (specifically the thickness of the first circuit board 20) makes the thickness of the display device 100 small when the first circuit board 20 is disposed on the non-light emitting side of the display panel 10.
  • the first circuit board 20 may be configured to provide only electrical connections to the display panel 10 and the second circuit board 30 to transmit signals (such as data signals, control signals, timing signals, etc.) or power, without having Any signal processing capability, that is, the first circuit board 20 may not have any signal processing circuit, interface circuit, or power supply circuit.
  • the first circuit board 20 may be implemented as a flexible flat cable (FFC) known in the art, and the flexible flat cable may be of any suitable type. The embodiments of the present disclosure do not deal with the type of flexible flat cable. limit.
  • the first circuit board 20 may also have a signal processing circuit formed on the basis of providing electrical connections to transmit signals or power, as long as the first circuit board 20 can meet the above-mentioned size requirements, for example, the above-mentioned The thickness requirements.
  • the electrical connection provided by the first circuit board 20 to the display panel 10 and the second circuit board 30 may provide at least one of the following: a power supply wire and a signal transmission wire between the display panel 10 and the second circuit board 30.
  • the second circuit board 30 may be disposed outside the display panel 10, that is, the projection of the second circuit board 30 on the plane where the display panel 10 is located does not overlap with the area where the display panel 10 is located.
  • the embodiments of the present disclosure are not limited thereto.
  • the projection of the second circuit board 30 on the plane where the display panel 10 is located may also at least partially overlap with the area where the display panel 10 is located.
  • the functional circuit of the second circuit board 30 that is signal-connected to the display panel 10 may include at least one of the following: an interface circuit, a power supply circuit, and a signal processing circuit.
  • the above-mentioned interface circuit can be used, for example, to receive a signal from a system (such as the main board of a complete machine), and input the digital signal in the received signal to a signal processing circuit (such as a timing control circuit) and transfer the power of the received signal The signal is input to the power circuit.
  • the interface circuit may include, for example, at least one of the following: TTL (Transistor Transistor Logic) interface, TMDS (Transition Minimized Differential Signaling) interface, LVDS (Low Voltage Differential Signaling), and low voltage differential signaling. ) Interface, etc.
  • TTL Transistor Transistor Logic
  • TMDS Transition Minimized Differential Signaling
  • LVDS Low Voltage Differential Signaling
  • the above-mentioned power supply circuit may include, for example, at least one of the following: LDO (Low Dropout Voltage Regulator) circuit, Boost converter, positive charge pump (Positive Charge Bump), negative charge pump (Negative Charge Bump), Voltage divider circuit, etc.
  • LDO Low Dropout Voltage Regulator
  • Boost converter positive charge pump
  • Negative Charge Bump Negative Charge Bump
  • Voltage divider circuit Voltage divider circuit
  • PMIC power management chip
  • the aforementioned signal processing circuit may include, for example, a timing control circuit, a gray scale circuit, and the like.
  • the timing control circuit may provide control signals to the scan driving circuit and the data driving circuit of the display panel 10
  • the gray scale circuit may provide the data driving circuit of the display panel 10 with a gamma reference voltage.
  • the timing control circuit may adopt a timing controller (Timing Controller, TCON).
  • TCON Timing Controller
  • the embodiments of the present disclosure are not limited thereto.
  • the signal processing circuit of the second circuit board 30 may also include circuits that implement other functions.
  • Parameters such as the size and number of layers of the second circuit board 30 can be determined according to actual requirements, and the embodiment of the present disclosure does not limit the size and number of layers of the second circuit board 30.
  • the display device 100 may further include a flexible printed circuit board configured to electrically connect the first circuit board 20 with at least one of the following: the display panel 10 and the second circuit board 30.
  • the flexible printed circuit board may include at least one of the first flexible printed circuit board 40 and the second flexible printed circuit board 50.
  • the first flexible printed circuit board 40 and the second flexible printed circuit board 50 are shown in FIG. 1, it should be understood that, in other embodiments, the display device 100 may not include the first flexible printed circuit board 40 or the first flexible printed circuit board 40. Two flexible printed circuit boards 50, or both are not included, and the embodiment of the present disclosure does not limit this.
  • the first circuit board 20 may be electrically connected to the display panel 10 through the first flexible printed circuit 40.
  • the first circuit board 20 may be electrically connected to the display panel 10 through wires.
  • FIG. 1 shows that the first circuit board 20 is electrically connected to the display panel 10 through two first flexible printed circuits 40, it should be understood that the first circuit board 20 may also pass one or three or more second A flexible printed circuit 40 is electrically connected to the display panel 10 to establish a signal connection with the display panel 10, etc., which is not limited in the embodiment of the present disclosure.
  • the first flexible printed circuit 40 may be connected to the non-light emitting side of the display panel 10, and the first flexible printed circuit 40 may be connected to the back of the first circuit board 20 positioned on the non-light emitting side of the display panel 10. To the side of the display panel 10.
  • the first flexible printed circuit 40 may also be connected to the light emitting side or the side surface of the display panel 10, and the first flexible printed circuit 40 may be connected to the first flexible printed circuit located on the non-light emitting side of the display panel 10.
  • the first flexible printed circuit board 40 may be connected to the first circuit board 20 and the display panel 10 through an anisotropic conductive adhesive, for example, by bonding.
  • the first circuit board 20 may be electrically connected to the second circuit board 30 through the second flexible printed circuit 50.
  • the first circuit board 20 may be electrically connected to the second circuit board 30 through wires.
  • FIG. 1 shows that the first circuit board 20 is electrically connected to the second circuit board 30 through a second flexible printed circuit 50, it should be understood that the first circuit board 20 may also pass through two or more second The flexible printed circuit 50 is electrically connected to the second circuit board 30, which is not limited in the embodiment of the present disclosure.
  • the second flexible printed circuit 50 may be connected to the first circuit board 20 and the second circuit board 30 through an anisotropic conductive adhesive or bonded by bonding.
  • the second flexible printed circuit board 50 may be connected to, for example, the side of the first circuit board 20 facing away from the display panel 10, the side of the first circuit board 20 facing the display panel 10, or the side of the first circuit board 20.
  • the disclosed embodiment does not limit this.
  • the second flexible circuit board 50 can also be connected to any position of the second circuit board 30, which is not limited in the embodiment of the present disclosure.
  • FIG. 2 is a schematic structural diagram of a display device according to at least one embodiment of the present disclosure.
  • the display panel 10' may include a wiring area 11, wherein a driving circuit 13 may be provided in the wiring area 11, and the driving circuit 13 may be, for example, a scan driving circuit and/or a data driving circuit.
  • the display panel 10' when the display panel 10' is a liquid crystal display panel or an electronic paper display panel, the display panel 10' may further include a backlight source 12 to provide a light source for display,
  • the backlight source 12 may be of various types, such as side-type or direct-type, which is not limited in the embodiment of the present disclosure.
  • the first flexible printed circuit 40 may include a first sub-flexible printed circuit 41 and a second sub-flexible printed circuit 42.
  • the first sub-flexible printed circuit 41 can be used to electrically connect the backlight source 12 of the display panel 10' with the first circuit board 20, and the second sub-flexible printed circuit 42 can be used to connect the drive circuit 13 (scanning drive circuit) of the display panel 10' And/or the data driving circuit) is electrically connected to the first circuit board 20.
  • the first flexible printed circuit 41 and the second flexible printed circuit 42 can be electrically connected to the first circuit board 20 by bonding, for example.
  • the first sub-flexible printed circuit 41 and the second sub-flexible printed circuit 42 may be bonded to the first circuit board 20 by an anisotropic conductive adhesive.
  • the embodiments of the present disclosure do not limit this.
  • the first flexible printed circuit 40 includes a first sub-flexible printed circuit 41 and a second sub-flexible printed circuit 42 which are separated, it should be understood that in other embodiments, the first flexible printed circuit The sub-flexible printed circuit 41 and the second sub-flexible printed circuit 42 may be integrally formed, which is not limited in the embodiment of the present disclosure.
  • the first circuit board 20 may be a non-flexible circuit board.
  • the first circuit board 20 may be a rigid circuit board.
  • the formation of a flexible circuit board-flexible circuit board connection between the first flexible printed circuit 40 and the first circuit board 20 can be avoided, and the bonding accuracy can be improved, and Reduce the requirements for equipment accuracy.
  • the first circuit board 20 may have a multilayer structure.
  • the first circuit board 20 may be a printed circuit board having a two-layer board, which is not limited in the embodiment of the present disclosure.
  • the first circuit board 20 may be electrically connected to the second circuit board 30 through the second flexible printed circuit 50'.
  • the first circuit board 20 may be electrically connected to the second circuit board 30 through wires.
  • the second flexible printed circuit 50' may be connected to the first circuit board 20 and the second circuit board 30 by bonding or anisotropic conductive adhesive.
  • FIG. 1 shows that the first circuit board 20 is electrically connected to the second circuit board 30 through a second flexible printed circuit 50', it should be understood that the first circuit board 20 may also pass two or more second The two flexible printed circuits 50' are electrically connected to the second circuit board 30, which is not limited in the embodiment of the present disclosure.
  • the second circuit board 30 may also be a non-flexible circuit board.
  • the second circuit board 30 may be a rigid circuit board.
  • the flexible circuit board-flexible circuit board connection can be avoided between the second flexible printed circuit 50' and the second circuit board 30, and the bonding accuracy can be improved. And it reduces the requirements for equipment accuracy.
  • the second circuit board 30 adopts a non-flexible circuit board, since the thermal expansion coefficients of the second circuit board 30 and the various functional circuits arranged on it are not much different, it can avoid the large difference in the thermal expansion coefficients. Stability and low manufacturing yield issues.
  • the second flexible printed circuit 50' may further include a connector 51, and the second flexible printed circuit 50' is electrically connected to the second circuit board 30 through the connector 51.
  • the connector 51 may be a snap-on connector, so as to be connected to the second circuit board 30 in a snap-on manner.
  • the second circuit board 30 may be provided with a socket that matches with the connector 51.
  • the second flexible printed circuit 50 and the second circuit board 30 are connected by a buckle connection, which can improve the stability of the connection between the second flexible printed circuit 50' and the second circuit board 30, and can avoid including the display device When the electronic device is folded, the bonding connection may fall off.
  • 3 shows a schematic diagram of the connector 51 of the second flexible printed circuit board 50' and the socket 31 of the second circuit board 30 according to at least one embodiment of the present disclosure.
  • the display device 100' further includes a rigid-flex board 60, and the second flexible printed circuit 50' may also be connected to the second circuit board 30 through the flexible-hard board 60.
  • the rigid-flex board mentioned here refers to the flexible circuit board and the rigid circuit board, which are combined together according to the relevant process requirements after pressing and other processes to form a circuit board with the characteristics of the flexible circuit board and the printed circuit board.
  • FIG. 5 is a schematic diagram of wiring of a display device according to some embodiments of the present disclosure.
  • the display device shown in Fig. 5 is, for example, the display device 100' shown in Fig. 2.
  • the lines of the backlight source 12 and the driving circuit 13 of the display panel 10' are collected in the second flexible printed circuit 50', and are electrically connected to the second circuit board 30 through the second flexible printed circuit 50', so that the backlight of the display panel 10'
  • the source 12 and the driving circuit 13 are signally connected to the functional circuit 32 of the second circuit board 30.
  • the first circuit board 20 may include a first wire 21 and a second wire 22 connected between the second flexible printed circuit 50' and the first sub-flexible printed circuit 41.
  • the first wire 21 and the second wire 22 may be, for example, a power supply wire and a signal transmission wire for the backlight 12 of the display panel 10', respectively.
  • the second circuit board 30 is electrically connected to the backlight source 12 of the display panel 10' via the second flexible printed circuit 50', the first and second wires 21 and 22 in the first circuit board 20, and the first sub-flexible printed circuit 41.
  • the first circuit board 20 may further include a third wire 23 and a fourth wire 24 connected between the second flexible printed circuit 50' and the second sub-flexible printed circuit 42.
  • the wiring area 11 of the display panel 10 may further include a fifth wire 25 and a sixth wire 26 connected between the second flexible printed circuit 42 and the driving circuit 13 of the display panel 10'.
  • the third wire 23 and the fifth wire 25 may be, for example, the power supply wires for the driving circuit 13 of the display panel 10'
  • the fourth wire 24 and the sixth wire 26 may be, for example, the wires for the driving circuit 13 of the display panel 10'. Signal transmission wire.
  • the functional circuit 32 of the second circuit board 30 is routed via the second flexible printed circuit 50', the third wire 23 and the fourth wire 24 in the first circuit board 20, the second sub-flexible printed circuit 42, and the display panel 10'
  • the fifth wire 25 and the sixth wire 26 in the area are electrically connected to the driving circuit 13 of the display panel 10'.
  • the embodiment of the present disclosure does not limit the shape, number, etc. of the wires in the first circuit board 20 and the display panel 10'.
  • the first wire 21, the second wire 22, the third wire 23, and the fourth wire 24 are formed on the first circuit board 20 in an appropriate manner, for example, on the surface of the circuit board, Or formed inside the circuit board and led out through, for example, via holes.
  • the frame of the display device can be narrowed without increasing the thickness of the display device, thereby realizing an ultra-thin and ultra-narrow design of the display device.
  • At least one embodiment of the present disclosure also provides an electronic device, which includes the display device described in any of the above embodiments.
  • the electronic device may be any product or component with display function such as LCD TV, monitor, OLED TV, electronic paper display device, mobile phone, tablet computer, notebook computer, digital photo frame, navigator, etc.
  • Fig. 6 shows a schematic structural diagram of an electronic device according to at least one embodiment of the present disclosure.
  • the electronic device 200 according to at least one embodiment of the present disclosure includes a first body 210 and a second body 220 connected to each other.
  • the first body 210 and the second body 220 are pivotally connected.
  • the first body 210 and the second body 220 may be connected by a hinge, however, it should be understood that the embodiment of the present disclosure is not limited thereto.
  • the electronic device 200 includes, for example, the above-mentioned display device 100 as shown in FIG. 1, in which the display panel 10 and the first circuit board 20 are located in the first body 210, and the first circuit board 20 is positioned on the non-light emitting side of the display panel 10;
  • the second circuit board 30 is located in the second body 220.
  • the electronic device 200 may be a notebook computer
  • the display device 100 may be used as a display screen of the notebook computer
  • the second circuit board 30 may be located in the main body 221 of the notebook computer and stacked with the keyboard 222 of the notebook computer.
  • the electronic device 200 further includes a connecting portion 230 hinged to the first body 210, and the second flexible printed circuit 50 connecting the first circuit board 20 and the second circuit board 30 may extend through the connecting portion 230.
  • FIG. 6 shows that although FIG. 6 shows that the connecting part 230 is hinged to the first body 210, in other embodiments, the connecting part 230 may be hinged to the second body 220, or the connecting part 230 may be hinged to the first body 210 and The second body 220 is hinged, which is not limited in the embodiment of the present disclosure.
  • the first circuit board 20 positioned on the non-light emitting side of the display panel 10 may be fixed to the display panel 10 or fixed to the first body 210. In other embodiments, the first circuit board 20 may be fixed to the display panel 10 and the first body 210, which is not limited in the embodiments of the present disclosure.
  • At least one embodiment of the present disclosure also provides a method of manufacturing a display device, which is applicable to the display device according to any embodiment of the present disclosure.
  • a method 500 for preparing a display device includes:
  • the first circuit board may be electrically connected to the display panel through, for example, at least one of a wire and a flexible printed circuit.
  • step S502 may include:
  • the first circuit board and the first flexible printed circuit are electrically connected by binding.
  • the embodiments of the present disclosure are not limited thereto.
  • the display panel and the first flexible printed circuit and between the first circuit board and the first flexible printed circuit can also be bonded by anisotropic conductive glue.
  • the second circuit board may be electrically connected to the first circuit board through, for example, at least one of a wire and a flexible printed circuit.
  • step S504 may include:
  • the second circuit board and the second flexible printed circuit are electrically connected by means of a buckle or a flexible and hard board.
  • anisotropic conductive glue may be used for bonding, or the second circuit The board and the second flexible printed circuit can also be connected by bonding.
  • At least one embodiment of the present disclosure also provides a method of operating a display device, and the method is applicable to the display device according to any embodiment of the present disclosure.
  • the method of operating the display device may include: transmitting a signal between the functional circuit of the second circuit board and the display panel via the first circuit board.

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Abstract

一种显示装置（100，100'）及电子设备（200）。该显示装置（100，100'）包括：显示面板（10，10'）、第一电路板（20）和第二电路板（30），其中显示面板（10，10'）包括出光侧和与出光侧相反的非出光侧；第一电路板（20）与显示面板（10，10'）电连接并被定位在非出光侧；以及第二电路板（30）配置为与第一电路板（20）电连接，并且第二电路板（30）包括与显示面板（10，10'）信号连接的功能电路。根据所述显示装置（100，100'）能够在不增大显示装置（100，100'）厚度的情况下缩窄显示装置（100，100'）的边框，从而实现显示装置（100，100'）的超薄超窄设计。

Description

显示装置及电子设备 技术领域
本公开的实施例涉及一种显示装置及电子设备。
背景技术
窄边框设计是显示装置的一个发展趋势，然而当前并没有令人满意的解决方案。有些显示装置虽然能够缩窄边框，但通常会使得显示装置厚度较大。
发明内容
本公开至少一个实施例提供了一种显示装置，其包括：
显示面板，包括出光侧和与所述出光侧相反的非出光侧；
第一电路板，与所述显示面板电连接并被定位在所述非出光侧；以及
第二电路板，配置为与所述第一电路板电连接，并且所述第二电路板包括与所述显示面板信号连接的功能电路。
例如，在根据本公开至少一个实施例的显示装置中，所述第一电路板配置为对所述显示面板和所述第二电路板仅提供电连接而不具备非信号处理能力。
例如，在根据本公开至少一个实施例的显示装置中，所述显示面板包括背光源和驱动电路，并且所述显示面板的背光源和驱动电路中至少之一电连接至所述第一电路板。
例如，根据本公开至少一个实施例的显示装置，还包括柔性印刷电路板，所述柔性印刷电路板配置为将所述第一电路板与以下中之一电连接：
所述显示面板；以及
所述第二电路板。
例如，在根据本公开至少一个实施例的显示装置中，所述第一电路板和所述第二电路板中至少之一为非柔性电路板。
例如，在根据本公开至少一个实施例的显示装置中，所述柔性印刷电路板包括第一柔性印刷电路板，所述第一柔性印刷电路板包括第一子柔性印刷 电路板和第二子柔性印刷电路板，
所述第一子柔性印刷电路板配置为将所述显示面板的背光源与所述第一电路板电连接，以及
所述第二子柔性印刷电路板配置为将所述显示面板的驱动电路与所述第一电路板电连接。
例如，在根据本公开至少一个实施例的显示装置中，所述柔性印刷电路板还包括第二柔性印刷电路板，所述第二柔性印刷电路板配置为将所述第一电路板与所述第二电路板电连接，以及
所述第二柔性印刷电路板包括扣接式连接器，以及所述第二电路板包括插座，所述扣接式连接器能够与所述插座相配合以将所述第一电路板与所述第二电路板电连接。
例如，在根据本公开至少一个实施例的显示装置中，所述柔性印刷电路板还包括第二柔性印刷电路板，所述第二柔性印刷电路板配置为将所述第一电路板与所述第二电路板电连接，以及
所述显示装置还包括软硬结合板，所述软硬结合板配置为将所述第二电路板与所述第二柔性印刷电路电连接。
例如，在根据本公开至少一个实施例的显示装置中，所述第一电路板包括配置为连接在所述第一子柔性印刷电路板与所述第二柔性印刷电路板之间的第一导线和第二导线，所述第一导线和所述第二导线分别为用于所述显示面板的背光源的供电导线和信号传输导线，
所述第一电路板还包括配置为连接在所述第二子柔性印刷电路板与所述第二柔性印刷电路板之间的第三导线和第四导线，以及
所述显示面板包括配置为连接在所述第二子柔性印刷电路板与所述显示面板的驱动电路之间的第五导线和第六导线，所述第三导线和所述第五导线为用于所述显示面板的驱动电路的供电导线，以及所述第四导线和所述第六导线为用于所述显示面板的驱动电路的信号传输导线。
例如，在根据本公开至少一个实施例的显示装置中，所述第一电路板为厚度小于1mm的非柔性电路板。
例如，在根据本公开至少一个实施例的显示装置中，所述第一电路板为具有多层结构的非柔性电路板。
例如，在根据本公开至少一个实施例的显示装置中，所述功能电路包括以下中至少之一：接口电路、电源电路以及信号处理电路。
本公开至少一个实施例还提供了一种电子设备，其包括根据本公开任一实施例的显示装置。
例如，在根据本公开至少一个实施例的电子设备中，所述电子设备包括能够彼此连接的第一主体和第二主体，以及
所述第一电路板位于所述第一主体中，所述第二电路板位于所述第二主体中。
例如，在根据本公开至少一个实施例的电子设备中，所述第一主体和所述第二主体可枢转地连接。
例如，根据本公开至少一个实施例的电子设备还包括与所述第一主体或所述第二主体中至少之一铰接的连接部，所述第一电路板和所述第二电路板经由所述连接部彼此连接。
例如，在根据本公开至少一个实施例的电子设备中，所述电子设备为笔记本电脑，所述显示装置用作所述笔记本电脑的显示屏，以及所述第二电路板位于所述笔记本电脑的主机壳体内并与所述笔记本电脑的键盘层叠。
本公开至少一个实施例还提供了一种制备根据本公开任一实施例的显示装置的方法，其包括：
将显示面板与第一电路板电连接并将第一电路板定位在非出光侧；以及
将所述第一电路板与第二电路板电连接。
本公开至少一个实施例还提供了一种操作根据本公开任一实施例的显示装置的方法，其包括：
在所述第二电路板的所述功能电路与所述显示面板之间经由所述第一电路板传输信号。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述的附图仅仅涉及本公开的一些实施例，而非对本公开的限制。
图1是根据本公开至少一个实施例的显示装置的结构示意图。
图2是根据本公开至少一个实施例的显示装置的结构示意图。
图3是根据本公开至少一个实施例的显示装置的第二柔性印刷电路板通过扣接式连接器与第二电路板连接的示意图。
图4是根据本公开至少一个实施例的显示装置的第二柔性印刷电路板通过软硬结合板与第二电路板连接的示意图。
图5是根据本公开至少一个实施例的显示装置的布线示意图。
图6是根据本公开至少一个实施例的电子设备的结构示意图。
图7是根据本公开至少一个实施例的制备显示装置的方法的流程图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合附图，对本公开实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于所描述的本公开的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本公开保护的范围。
除非另作定义，此处使用的技术术语或者科学术语应当为本发明所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。同样，“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
如上所述，当前的窄边框设计方法均难以令人满意。有些显示装置在缩窄边框的同时，会使得显示装置厚度较大。
本公开的至少一个实施例提供了一种显示装置，其能够在不增大显示装置厚度的情况下缩窄显示装置的边框，从而实现显示装置的超薄超窄设计。
图1是根据本公开至少一个实施例的显示装置的结构示意图。如图1所示，根据本公开至少一个实施例的显示装置100包括显示面板10、第一电路 板20以及第二电路板30。显示面板10包括出光侧和与出光侧相反的非出光侧。出光侧指的是在使用时向用户显示图像的一侧，即显示侧。在图1中，示意性地示出了显示面板10的非出光侧。第一电路板20与显示面板10电连接并被定位在显示面板10的非出光侧。在一些实施例中，第一电路板20在显示面板10所在平面上的投影与显示面板10所在区域至少部分重叠。例如，第一电路板20在显示面板10所在平面上的投影落在显示面板10的范围之内。第二电路板30配置为与第一电路板20电连接，并且第二电路板30包括与10显示面板信号连接的功能电路。
需要说明的是，图1中仅示意性的示出了一个第一电路板20和一个第二电路板30，然而在其他实施例中显示装置100根据实际要求还可包括其他数量的第一电路板20和第二电路板30，本公开的实施例对显示装置100包括的第一电路板20和第二电路板30的个数不作限定。
在一些实施例中，显示面板10例如可以为液晶面板、有机发光二极管(OLED)显示面板、量子点发光二极管(QLED)显示面板、电子纸面板等。显示面板10可具有任何尺寸和类型，本公开的实施例对此不作限制。例如，在一些实施例中，显示面板10可以是扭曲向列(TN)型液晶面板、高级超维场转换(ADS)型液晶面板、面内转换(IPS)型液晶面板、垂直配向(VA)型液晶面板、有源矩阵有机发光二极管(AMOLED)型显示面板、无源矩阵有机发光二极管(PMOLED)型显示面板等。例如，在一些实施例中，显示面板10的尺寸可以是0.2寸、1寸、10寸、32寸、55寸、110寸等。
在一些实施例中，第一电路板20的厚度小于1mm。例如，第一电路板20的厚度可小于或等于0.9mm、0.8mm、0.7mm、0.6mm、0.5mm、0.44mm等。在一些实施例中，第一电路板20的宽度还可小于5mm。例如，第一电路板20的宽度可小于或等于4mm、3mm等。此外，应理解，这里提到的宽度指的是第一电路板20沿图1中的X方向的延伸距离和沿图1中的Y方向的延伸距离中较短的一个延伸距离。在图1中，第一电路板20的宽度为沿图1中的Y方向的延伸距离。第一电路板20的上述尺寸(具体为第一电路板20的厚度)使得在第一电路板20被设置在显示面板10的非出光侧时对显示装置100的厚度的影响很小。
在一些实施例中，第一电路板20可配置为对显示面板10和第二电路板 30仅提供电连接，以传递信号(例如数据信号、控制信号、时序信号等)或电源，而不具有任何的信号处理能力，即第一电路板20上可不具有任何的信号处理电路、接口电路、电源电路。例如，第一电路板20可实现为本领域中已知的柔性扁平电缆(flexible flat cable，FFC)，该柔性扁平电缆可以具有任何合适的类型，本公开的实施例对柔性扁平电缆的类型不作限制。
在另一些实施例中，第一电路板20上也可在提供电连接以传递信号或电能的基础上还形成有信号处理电路，只要第一电路板20可满足上述的尺寸要求，例如满足上述的厚度要求。
第一电路板20对显示面板10和第二电路板30提供的电连接在显示面板10和第二电路板30之间可提供以下中至少之一：供电导线和信号传输导线。
在一些实施例中，在使用中，第二电路板30可设置在显示面板10外部，即第二电路板30在显示面板10所在平面上的投影与显示面板10所在区域不重叠。然而，应理解，本公开的实施例并不限于此。在另一些实施例中，在使用中，根据实际要求，第二电路板30在显示面板10所在平面上的投影也可与显示面板10所在区域至少部分重叠。
第二电路板30的与显示面板10信号连接的功能电路可包括以下中至少之一：接口电路、电源电路以及信号处理电路。
上述的接口电路例如可用于接收来自系统(例如整机的主板)的信号，并将所接收的信号中的数字信号输入至信号处理电路(如时序控制电路)以及将所接收的信号中的电源信号输入至电源电路。接口电路例如可包括以下中至少之一：TTL(Transistor Transistor Logic，晶体管-晶体管逻辑电路)接口、TMDS(Transition Minimized Differential Signaling，最小化传输差分信号)接口、LVDS(Low Voltage Differential Signaling，低压差分信号)接口等。然而，应理解，本公开的实施例并不限于此。
上述的电源电路例如可包括以下中至少之一：LDO(Low Dropout Voltage Regulator，低压差稳压器)电路、Boost转换器、正电荷泵(Positive Charge Bump)、负电荷泵(Negative Charge Bump)、分压电路等。然而，应理解，本公开的实施例并不限于此。在一些实施例中，该电源电路还可采用电源管理芯片(PMIC)。
上述的信号处理电路例如可包括时序控制电路、灰阶电路等。例如，时 序控制电路可向显示面板10的扫描驱动电路和数据驱动电路提供控制信号，以及灰阶电路可向显示面板10的数据驱动电路提供伽马(Gamma)基准电压。例如，在本公开的一些实施例中，时序控制电路可以采用时序控制器(Timing Controller，TCON)。然而，应理解，本公开的实施例并不限于此，在其他实施例中，根据实际要求，第二电路板30的信号处理电路还可包括实现其他功能的电路。
第二电路板30的尺寸、层数等参数可根据实际要求来确定，本公开的实施例对第二电路板30的尺寸、层数等不作限制。
在一些实施例中，显示装置100还可包括柔性印刷电路板，该柔性印刷电路板配置为将第一电路板20与以下中至少之一电连接：显示面板10和第二电路板30。例如，在一些实施例中，该柔性印刷电路板可包括第一柔性印刷电路板40和第二柔性印刷电路板50中至少之一。虽然图1中示出了第一柔性印刷电路板40和第二柔性印刷电路板50，然而应理解，在其他实施例中，显示装置100可不包括第一柔性印刷电路板40，或不包括第二柔性印刷电路板50，或两者都不包括，本公开的实施例对此不做限制。
在一些实施例中，第一电路板20可通过第一柔性印刷电路40与显示面板10电连接。然而，应理解，本公开的实施例并不限于此。例如，在一些实施例中，第一电路板20可通过导线与显示面板10电连接。虽然在图1中示出了第一电路板20通过两个第一柔性印刷电路40与显示面板10电连接，然而应理解，第一电路板20还可通过一个或三个及以上数量的第一柔性印刷电路40与显示面板10电连接，以建立与显示面板10的信号连接等，本公开的实施例对此不作限制。
在一些实施例中，第一柔性印刷电路40可连接在显示面板10的非出光侧，并且第一柔性印刷电路40可连接在定位在显示面板10的非出光侧的第一电路板20的背向显示面板10的一侧。然而，应理解，本公开的实施例并不限于此。例如，在另一些实施例中，第一柔性印刷电路40还可连接在显示面板10的出光侧或侧面，以及第一柔性印刷电路40可连接在定位在显示面板10的非出光侧的第一电路板20的朝向显示面板10的一侧或第一电路板20的侧面。第一柔性印刷电路板40例如可通过绑定(bonding)的方式连接至或通过各向异性导电胶粘接至第一电路板20和显示面板10。
在一些实施例中，第一电路板20可通过第二柔性印刷电路50与第二电路板30电连接。然而，应理解，本公开的实施例并不限于此。例如，在一些实施例中，第一电路板20可通过导线与第二电路板30电连接。虽然在图1中示出了第一电路板20通过一个第二柔性印刷电路50与第二电路板30电连接，然而应理解，第一电路板20还可通过两个及以上数量的第二柔性印刷电路50与第二电路板30电连接，本公开的实施例对此不作限制。与上述类似的，在一些实施例中，第二柔性印刷电路50可通过绑定(bonding)的方式连接至或通过各向异性导电胶粘接至第一电路板20和第二电路板30。
第二柔性印刷电路板50例如可连接在第一电路板20的背向显示面板10的一侧、第一电路板20的朝向显示面板10的一侧、或第一电路板20的侧面，本公开的实施例对此不作限制。第二柔性电路板50也可连接在第二电路板30的任意位置，本公开的实施例对此不作限制。
图2是根据本公开至少一个实施例的显示装置的结构示意图。如图2所示，在根据本公开至少一个实施例的显示装置100’中，显示面板10’可包括走线区域11，其中，在走线区域11中可设置有驱动电路13，该驱动电路13例如可以是扫描驱动电路和/或数据驱动电路，以及例如在显示面板10’为液晶显示面板或电子纸显示面板的情形，显示面板10’还可包括背光源12，以提供显示用光源，该背光源12可以为各种类型的，例如侧入式或直下式，本公开的实施例对此不作限制。第一柔性印刷电路40可包括第一子柔性印刷电路41和第二子柔性印刷电路42。第一子柔性印刷电路41可用于将显示面板10’的背光源12与第一电路板20电连接，以及第二子柔性印刷电路42可用于将显示面板10’的驱动电路13(扫描驱动电路和/或数据驱动电路)与第一电路板20电连接。第一子柔性印刷电路41和第二子柔性印刷电路42例如可通过绑定(bonding)的方式与第一电路板20电连接。在另一些实施例中，第一子柔性印刷电路41和第二子柔性印刷电路42可通过各向异性导电胶粘接至第一电路板20。然而，应理解，本公开的实施例对此不作限制。此外，应理解，虽然在图2中示出了第一柔性印刷电路40包括分离的第一子柔性印刷电路41和第二子柔性印刷电路42，然而应理解，在其他实施例中，第一子柔性印刷电路41和第二子柔性印刷电路42可一体形成，本公开的实施例对此不作限制。
在一些实施例中，第一电路板20可以是非柔性电路板。例如，第一电路板20可以是硬质电路板。在第一电路板20采用非柔性电路板的情况下，可避免在第一柔性印刷电路40与第一电路板20之间形成柔性电路板-柔性电路板的连接，可提高贴合精度，且降低了对设备精度的要求。
在一些实施例中，第一电路板20可具有多层结构。例如，第一电路板20可以是具有2层板的印刷电路板，本公开的实施例对此不作限制。
在一些实施例中，第一电路板20可通过第二柔性印刷电路50’与第二电路板30电连接。然而，应理解，本公开的实施例并不限于此。例如，在一些实施例中，第一电路板20可通过导线与第二电路板30电连接。与上述类似的，在一些实施例中，第二柔性印刷电路50’可通过绑定(bonding)的方式连接至或各向异性导电胶粘接至第一电路板20和第二电路板30。
虽然在图1中示出了第一电路板20通过一个第二柔性印刷电路50’与第二电路板30电连接，然而应理解，第一电路板20还可通过两个及以上数量的第二柔性印刷电路50’与第二电路板30电连接，本公开的实施例对此不作限制。
在第一电路板20采用非柔性电路板的情况下，可避免在第二柔性印刷电路50’与第一电路板20之间形成柔性电路板-柔性电路板的连接，可提高贴合精度，且降低了对设备精度的要求。类似地，在一些实施例中，第二电路板30也可以是非柔性电路板。例如，第二电路板30可以是硬质电路板。在第二电路板30采用非柔性电路板的情况下，可避免在第二柔性印刷电路50’与第二电路板30之间形成柔性电路板-柔性电路板的连接，可提高贴合精度，且降低了对设备精度的要求。此外，在第二电路板30采用非柔性电路板的情况下，由于第二电路板30与设置在其上的各种功能电路的热膨胀系数相差不大，可避免热膨胀系数相差较大导致的不稳定和制造良率低等问题。
在一些实施例中，第二柔性印刷电路50’还可包括连接器51，第二柔性印刷电路50’通过连接器51与第二电路板30电连接。连接器51可采用扣接式连接器，从而通过扣接的方式连接至第二电路板30。在连接器51采用扣接式连接器的情况下，第二电路板30上可设置有与连接器51相配合的插座。第二柔性印刷电路50与第二电路板30之间采用扣接的方式连接，可提高第二柔性印刷电路50’与第二电路板30之间连接的稳定性，并可避免包括该显 示装置的电子设备在折叠时绑定(bonding)式连接可能脱落的问题。图3示出了根据本公开至少一个实施例的第二柔性印刷电路板50’的连接器51和第二电路板30的插座31的示意图。
在另一些实施例中，如图4所示，显示装置100’还包括软硬结合板60，第二柔性印刷电路50’还可通过软硬结合板60与第二电路板30形成连接。然而，应理解，本公开的实施例对此不作限制。这里提到的软硬结合板指的是柔性电路板与硬性电路板，经过压合等工序，按相关工艺要求组合在一起，形成的具有柔性电路板特性与印刷电路板特性的电路板。
图5是根据本公开一些实施例的显示装置的布线示意图。图5中所示的显示装置例如为图2所示的显示装置100’。显示面板10’的背光源12和驱动电路13的线路汇集于第二柔性印刷电路50’，并通过第二柔性印刷电路50’电连接至第二电路板30，从而使得显示面板10’的背光源12和驱动电路13与第二电路板30的功能电路32信号连接。如图5所示，在一些实施例中，第一电路板20中可包括连接在第二柔性印刷电路50’与第一子柔性印刷电路41之间的第一导线21和第二导线22。第一导线21和第二导线22例如分别可以是用于显示面板10’的背光源12的供电导线和信号传输导线。第二电路板30经由第二柔性印刷电路50’、第一电路板20中的第一导线21和第二导线22以及第一子柔性印刷电路41电连接至显示面板10’的背光源12。
第一电路板20中还可包括连接在第二柔性印刷电路50’与第二子柔性印刷电路42之间的第三导线23和第四导线24。此外，显示面板10的走线区域11还可包括连接在第二子柔性印刷电路42与显示面板10’的驱动电路13之间的第五导线25和第六导线26。第三导线23和第五导线25例如可以是用于显示面板10’的驱动电路13的供电导线，以及第四导线24和第六导线26例如可以是用于显示面板10’的驱动电路13的信号传输导线。第二电路板30的功能电路32经由第二柔性印刷电路50’、第一电路板20中的第三导线23和第四导线24、第二子柔性印刷电路42以及显示面板10’的走线区域中的第五导线25和第六导线26电连接至显示面板10’的驱动电路13。然而，应理解，本公开的实施例对第一电路板20和显示面板10’中导线的形状、数量等不作限制。
在一些实施例中，上述的第一导线21、第二导线22、第三导线23、第 四导线24在第一电路板20上，可通过适当的方式形成，例如形成电路板的表面上，或形成在电路板的内部并通过例如过孔引出。
根据本公开实施例的显示装置，能够在不增大显示装置厚度的情况下缩窄显示装置的边框，从而实现显示装置的超薄超窄设计。
本公开的至少一个实施例还提供了一种电子设备，其包括上述任一实施例所述的显示装置。例如，该电子设备可以为：液晶电视、显示器、OLED电视、电子纸显示装置、手机、平板电脑、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。
图6示出了根据本公开至少一个实施例的电子设备的结构示意图。如图6所示，根据本公开至少一个实施例的电子设备200包括彼此连接的第一主体210和第二主体220。在一些实施例中，第一主体210和第二主体220可枢转地连接。例如第一主体210和第二主体220之间可通过铰链连接，然而，应理解本公开的实施例并不限于此。
电子设备200例如包括上述如图1所示的显示装置100，其中显示面板10和第一电路板20位于第一主体210中，并且第一电路板20定位在显示面板10的非出光侧；第二电路板30位于第二主体220中。例如，电子设备200可以是笔记本电脑，显示装置100可用作该笔记本电脑的显示屏，并且第二电路板30可位于该笔记本电脑主机壳体221内并与该笔记本电脑的键盘222层叠。
在一些实施例中，电子设备200还包括与第一主体210铰接的连接部230，连接第一电路板20和第二电路板30的第二柔性印刷电路50可延伸穿过连接部230。应理解，虽然图6中示出了连接部230与第一主体210铰接，然而，在其他实施例中，连接部230可与第二主体220铰接，或者连接部230可与第一主体210和第二主体220均铰接，本公开的实施例对此不作限制。
在一些实施例中，定位在显示面板10的非出光侧的第一电路板20可固定至显示面板10或者固定至第一主体210。在另一些实施例中，第一电路板20可与显示面板10和第一主体210均固定，本公开的实施例对此不作限制。
本公开的至少一个实施例还提供了一种制备显示装置的方法，该方法可适用于根据本公开任一实施例的显示装置。
如图7所示，根据本公开至少一个实施例的制备显示装置的方法500包 括：
S502.将显示面板与第一电路板电连接，其中，显示面板包括出光侧和与出光侧相反的非出光侧，第一电路板定位在非出光侧；以及
S504.将第一电路板与第二电路板电连接，其中，第二电路板包括与显示面板信号连接的功能电路。
在一些实施例中，第一电路板可通过例如导线和柔性印刷电路中至少之一与显示面板电连接。
在第一电路板通过柔性印刷电路与显示面板电连接的情况下，步骤S502可包括：
通过绑定的方式将显示面板与第一柔性印刷电路电连接；以及
通过绑定的方式将第一电路板与第一柔性印刷电路电连接。
然而，应理解，本公开的实施例并不限于此。例如，在另一些实施例中，显示面板与第一柔性印刷电路之间和第一电路板与第一柔性印刷电路之间还可通过各向异性导电胶进行粘接。
在一些实施例中，第二电路板可通过例如导线和柔性印刷电路中至少之一与第一电路板电连接。
在第二电路板通过柔性印刷电路与第一电路板电连接的情况下，步骤S504可包括：
通过绑定的方式将第一电路板与第二柔性印刷电路电连接；以及
通过扣接或软硬结合板的方式将第二电路板与第二柔性印刷电路电连接。
然而，应理解，本公开的实施例并不限于此。例如，在另一些实施例中，第一电路板与第二柔性印刷电路之间和第二电路板与第二柔性印刷电路之间还可通过各向异性导电胶进行粘接，或者第二电路板与第二柔性印刷电路之间也可通过绑定的方式进行连接。
关于显示装置中各部件(如显示面板、第一电路板、第二电路板、第一柔性印刷电路、第二柔性印刷电路等)的详细描述可参见上方参照各实施例的描述，本公开对此将不再赘述。
本公开至少一个实施例还提供了一种操作显示装置的方法，该方法适用于根据本公开任一实施例的显示装置。该操作显示装置的方法可包括：在第 二电路板的功能电路与显示面板之间经由第一电路板传输信号。
以上所述仅是本公开的示范性实施方式，而非用于限制本公开的保护范围，本公开的保护范围由所附的权利要求确定。

Claims (17)

  1. 一种显示装置，包括：
    显示面板，包括出光侧和与所述出光侧相反的非出光侧；
    第一电路板，与所述显示面板电连接并被定位在所述非出光侧；以及
    第二电路板，配置为与所述第一电路板电连接，并且所述第二电路板包括与所述显示面板信号连接的功能电路。
  2. 根据权利要求1所述的显示装置，其中，所述第一电路板配置为对所述显示面板和所述第二电路板仅提供电连接而不具备信号处理能力。
  3. 根据权利要求1或2所述的显示装置，其中，所述显示装置包括背光源和驱动电路，并且所述显示装置的所述背光源和所述驱动电路中至少之一电连接至所述第一电路板。
  4. 根据权利要求1至3中任一项所述的显示装置，还包括柔性印刷电路板，所述柔性印刷电路板配置为将所述第一电路板与以下中至少之一电连接：
    所述显示面板；以及
    所述第二电路板。
  5. 根据权利要求4所述的显示装置，其中，所述第一电路板和所述第二电路板中至少之一为非柔性电路板。
  6. 根据权利要求4或5所述的显示装置，其中，所述柔性印刷电路板包括第一柔性印刷电路板，所述第一柔性印刷电路板包括第一子柔性印刷电路板和第二子柔性印刷电路板，
    所述第一子柔性印刷电路板配置为将所述显示面板的背光源与所述第一电路板电连接，以及
    所述第二子柔性印刷电路板配置为将所述显示面板的驱动电路与所述第一电路板电连接。
  7. 根据权利要求6所述的显示装置，其中，所述柔性印刷电路板还包括第二柔性印刷电路板，所述第二柔性印刷电路板配置为将所述第一电路板与所述第二电路板电连接，
    所述第二柔性印刷电路板包括扣接式连接器，以及所述第二电路板包括插座，所述扣接式连接器能够与所述插座相配合以将所述第一电路板与所述 第二电路板电连接。
  8. 根据权利要求6所述的显示装置，其中，所述柔性印刷电路板还包括第二柔性印刷电路板，所述第二柔性印刷电路板配置为将所述第一电路板与所述第二电路板电连接，以及
    所述显示装置还包括软硬结合板，所述软硬结合板配置为将所述第二电路板与所述第二柔性印刷电路电连接。
  9. 根据权利要求7或8所述的显示装置，其中，所述第一电路板包括配置为连接在所述第一子柔性印刷电路板与所述第二柔性印刷电路板之间的第一导线和第二导线，所述第一导线和所述第二导线分别为用于所述显示面板的背光源的供电导线和信号传输导线，
    所述第一电路板还包括配置为连接在所述第二子柔性印刷电路板与所述第二柔性印刷电路板之间的第三导线和第四导线，以及
    所述显示面板包括配置为连接在所述第二子柔性印刷电路板与所述显示面板的驱动电路之间的第五导线和第六导线，所述第三导线和所述第五导线为用于所述显示面板的驱动电路的供电导线，以及所述第四导线和所述第六导线为用于所述显示面板的驱动电路的信号传输导线。
  10. 根据权利要求5所述的显示装置，其中，所述第一电路板为厚度小于1mm的非柔性电路板。
  11. 根据权利要求5所述的显示装置，其中，所述第一电路板为具有多层结构的非柔性电路板。
  12. 根据权利要求1至11中任一项所述的显示装置，其中，所述功能电路包括以下中至少之一：接口电路、电源电路以及信号处理电路。
  13. 一种电子设备，包括如权利要求1至12中任一项所述的显示装置。
  14. 根据权利要求13所述的电子设备，其中，
    所述电子设备包括彼此连接的第一主体和第二主体，以及
    所述第一电路板位于所述第一主体中，所述第二电路板位于所述第二主体中。
  15. 根据权利要求14所述的电子设备，其中，所述第一主体和所述第二主体可枢转地连接。
  16. 根据权利要求13至15中任一项所述的电子设备，还包括与所述第 一主体或所述第二主体中至少之一铰接的连接部，所述第一电路板和所述第二电路板经由所述连接部彼此连接。
  17. 根据权利要求13至16中任一项所述的电子设备，其中，所述电子设备为笔记本电脑，所述显示装置用作所述笔记本电脑的显示屏，以及所述第二电路板位于所述笔记本电脑的主机壳体内并与所述笔记本电脑的键盘层叠。
PCT/CN2019/099656 2019-08-07 2019-08-07 显示装置及电子设备 WO2021022522A1 (zh)

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