WO2021022522A1 - 显示装置及电子设备 - Google Patents
显示装置及电子设备 Download PDFInfo
- 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
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- WO
- WIPO (PCT)
- Prior art keywords
- circuit board
- flexible printed
- display device
- printed circuit
- display panel
- Prior art date
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- 238000012545 processing Methods 0.000 claims description 11
- 230000008054 signal transmission Effects 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 239000004973 liquid crystal related substance Substances 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000011664 signaling Effects 0.000 description 3
- 229920001621 AMOLED Polymers 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002096 quantum dot Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
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- 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
Description
Claims (17)
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
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CN201980001282.8A CN112639663A (zh) | 2019-08-07 | 2019-08-07 | 显示装置及电子设备 |
PCT/CN2019/099656 WO2021022522A1 (zh) | 2019-08-07 | 2019-08-07 | 显示装置及电子设备 |
US16/956,751 US11696403B2 (en) | 2019-08-07 | 2019-08-07 | Display device and electronic apparatus |
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PCT/CN2019/099656 WO2021022522A1 (zh) | 2019-08-07 | 2019-08-07 | 显示装置及电子设备 |
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KR102483408B1 (ko) * | 2018-08-21 | 2022-12-30 | 삼성디스플레이 주식회사 | 표시 장치 |
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2019
- 2019-08-07 CN CN201980001282.8A patent/CN112639663A/zh active Pending
- 2019-08-07 US US16/956,751 patent/US11696403B2/en active Active
- 2019-08-07 WO PCT/CN2019/099656 patent/WO2021022522A1/zh active Application Filing
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US20220394852A1 (en) | 2022-12-08 |
US11696403B2 (en) | 2023-07-04 |
CN112639663A (zh) | 2021-04-09 |
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