Display device and electronic device

Abstract

The present disclosure relates to a display device and an electronic device, and belongs to the field of display. The display device includes a flexible display panel, a plurality of driver integrated circuits, a logic board, and a circuit board. The flexible display panel has a display area and a peripheral area surrounding the display area, and a plurality of driver integrated circuits are located on the first surface of the flexible display panel and in the peripheral area; the logic board has an interface for electrically connecting to a processor of an electronic device; and the circuit board is electrically connected to the driver integrated circuit and the logic board, respectively. The first bendable section of the circuit board is configured to bend along the first side edge to the second surface of the flexible display panel, the second bendable section of the circuit board is configured to bend on the side where the second surface is located, so that the logic board extends from the first side edge, and the third bendable section of the circuit board is configured to bypass the hinge axis of the electronic device. The logic board is not arranged on the flexible display panel, reducing the thickness of the flexible display panel.

Description

Technical Field

[0001] The present disclosure relates to the field of display, and in particular to a display device and an electronic device. Background Art

[0002] Electronic devices with foldable screens are common in people's lives, such as cameras, laptops, etc. Electronic devices with foldable screens include a display screen and a body, which are hinged to each other. The body integrates electronic components such as a processor and a graphics card. The processor is electrically connected to the display screen to control the display screen to display images. Summary of the invention

[0003] Embodiments of the present disclosure provide a display device and an electronic device.

[0004] In one aspect, the present disclosure provides a display device, comprising:

[0005] A flexible display panel having a display area and a peripheral area surrounding the display area;

[0006] A plurality of driving integrated circuits are located on the first surface of the flexible display panel and in the peripheral area, and the plurality of driving integrated circuits are arranged at intervals along the first side of the flexible display panel;

[0007] a logic board having an interface for electrical connection with a processor of the electronic device;

[0008] A circuit board connected between the flexible display panel and the logic board, and the circuit board is electrically connected to the driving integrated circuit and the logic board respectively;

[0009] Among them, the circuit board has a first bendable section, a second bendable section and a third bendable section, the first bendable section is configured to bend along the first side to the second surface of the flexible display panel, the second surface and the first surface are two opposite surfaces of the flexible display panel, the second bendable section is configured to bend on the side where the second surface is located, so that the logic board extends from the first side, and the third bendable section is configured to bypass the hinge axis of the electronic device.

[0010] In one implementation of the embodiment of the present disclosure, the circuit board includes:

[0011] at least one first flexible circuit board, the first flexible circuit board is electrically connected to at least one of the driving integrated circuits, and the first bendable section is at least a part of the first flexible circuit board;

[0012] a printed circuit board, electrically connected to the at least one first flexible circuit board, the printed circuit board being located on the second surface;

[0013] A second flexible circuit board has one end electrically connected to the printed circuit board and the other end electrically connected to the logic board. The second bendable section and the third bendable section are at least a part of the second flexible circuit board.

[0014] In an implementation manner of the embodiment of the present disclosure, the first flexible circuit board is electrically connected to the driving integrated circuit in a one-to-one correspondence.

[0015] In one implementation of the embodiment of the present disclosure, the circuit board includes:

[0016] a third flexible circuit board, electrically connected to at least one of the driving integrated circuits, wherein the first bendable section is at least a part of the third flexible circuit board;

[0017] A fourth flexible circuit board has a first end and a second end opposite to each other, wherein the first end is electrically connected to at least two of the third flexible circuit boards, the second end is electrically connected to the logic board, and the second bendable section and the third bendable section are at least a part of the fourth flexible circuit board.

[0018] In an implementation of the embodiment of the present disclosure, the third flexible circuit board includes a main body and at least two first branches connected to the main body, and each of the first branches is electrically connected to a corresponding driving integrated circuit; or,

[0019] The third flexible printed circuit board is electrically connected to the driving integrated circuit in a one-to-one correspondence.

[0020] In an implementation of the embodiment of the present disclosure, the first end of the fourth flexible circuit board has at least two second branches, and each of the second branches is electrically connected to one of the third flexible circuit boards; or,

[0021] The fourth flexible circuit board includes a lateral extension portion extending along the arrangement direction of the driving integrated circuits and a longitudinal connection portion vertically connected to the lateral extension portion, the lateral extension portion is electrically connected to at least two of the third flexible circuit boards, and the longitudinal connection portion is electrically connected to the logic board.

[0022] In one implementation of the embodiment of the present disclosure, the circuit board includes:

[0023] At least two fifth flexible circuit boards, one end of each of which is electrically connected to at least two of the driving integrated circuits, and the other end of each of which is electrically connected to the logic board.

[0024] In an implementation of the embodiment of the present disclosure, the logic board has at least two first connectors;

[0025] One end of the circuit board has at least two third branches, each of the third branches has a second connector, and the first connector and the second connector are electrically connected in a one-to-one correspondence.

[0026] In an implementation of the embodiment of the present disclosure, the first bendable section, the second bendable section and the third bendable section are all single-layer structures.

[0027] In an implementation manner of the embodiment of the present disclosure, the number of the driver integrated circuits is between 4 and 10.

[0028] In an implementation of the embodiment of the present disclosure, the logic board includes a carrier circuit board and a plurality of electronic devices, the carrier circuit board has two opposite carrier surfaces, and the plurality of electronic devices are respectively located on the two carrier surfaces.

[0029] In another aspect, the present disclosure provides a display device, comprising:

[0030] A flexible display panel having a display area and a peripheral area surrounding the display area;

[0031] A plurality of driving integrated circuits are located on the first surface of the flexible display panel and in the peripheral area, and the plurality of driving integrated circuits are arranged at intervals along the first side of the flexible display panel;

[0032] A printed circuit board, located on the second surface of the flexible display panel;

[0033] A first flexible circuit board having a first bendable section, one end of the first flexible circuit board being electrically connected to the driving integrated circuit, the other end of the first flexible circuit board being folded to a second surface of the flexible display panel through the first bendable section and electrically connected to the printed circuit board, the second surface and the first surface being two opposite surfaces of the flexible display panel;

[0034] a logic board having an interface for electrical connection with a processor of the electronic device;

[0035] A second flexible circuit board has one end electrically connected to the printed circuit board and the other end electrically connected to the logic board, the second flexible circuit board includes a second bendable section and a third bendable section, the second bendable section is configured to be folded on the side where the second surface is located, so that the third bendable section and the logic board extend from the first side, and the third bendable section is configured to bypass a hinge axis of the electronic device.

[0036] In one implementation of the embodiment of the present disclosure, the logic board has at least two first connectors, the other end of the second flexible circuit board has two third branches, each of the third branches has a second connector, and the first connectors and the second connectors are electrically connected one by one, so that the second flexible circuit board and the logic board are electrically connected.

[0037] In one implementation of the embodiment of the present disclosure, the second flexible circuit board includes a single-layer board area and a double-layer board area that are electrically connected to each other, the second bendable section and the third bendable section are both located in the single-layer board area, and the second connector is located in the double-layer board area.

[0038] On the other hand, the present disclosure provides an electronic device comprising a display screen and a body, wherein the display screen and the body are hinged via a hinge axis, a processor is provided inside the body, the display screen comprises the display device described in any one of the above aspects, and the processor is electrically connected to an interface of the logic board.

[0039] In an implementation manner of the embodiment of the present disclosure, the electronic device includes a laptop computer.

[0040] The technical solution provided by the embodiments of the present disclosure has the following beneficial effects:

[0041] In the disclosed embodiment, a plurality of driver integrated circuits are arranged at intervals along the first side of the flexible display panel in the peripheral area of ​​the flexible panel, and the driver integrated circuits are electrically connected to the logic board through the circuit board. Since the circuit board is provided with three bendable sections, the circuit board can extend the logic board from the first side of the flexible display panel through the three bendable sections and bypass the hinge axis of the electronic device, so that the logic board is not located on the flexible display panel, reducing the thickness of the flexible display panel. At the same time, the circuit board is bent to the second surface of the flexible display panel through the first bendable section, which can reduce the length of the circuit board located on the first side of the flexible display panel, thereby reducing the width of the non-display area on the first side of the flexible display panel, and further reducing the frame of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0043] Figure 1 is a front view of a display device provided by an embodiment of the present disclosure;

[0044] Figure 2 is a left view of a display device provided by an embodiment of the present disclosure;

[0045] Figure 3 yes Figure 1 a rear view of the display device shown;

[0046] Figure 4 is a structural diagram of a first flexible circuit board provided in an embodiment of the present disclosure;

[0047] Figure 5 is a structural diagram of a printed circuit board provided by an embodiment of the present disclosure;

[0048] Figure 6 is a structural diagram of a second flexible circuit board provided in an embodiment of the present disclosure;

[0049] Figure 7 is a front view of a display device provided by an embodiment of the present disclosure;

[0050] Figure 8 yes Figure 7 a rear view of the display device shown;

[0051] Fig. 9 is a structural schematic diagram of a third flexible circuit board provided by the disclosed embodiment of the present invention;

[0052] Fig.10 is a front view of a display device provided by an embodiment of the present disclosure;

[0053] Fig.11 yes Fig.10 a rear view of the display device shown;

[0054] Fig.12 is a front view of a display device provided by an embodiment of the present disclosure;

[0055] Fig.13 yes Fig.12 a rear view of the display device shown;

[0056] Fig.14 is a front view of a display device provided by an embodiment of the present disclosure;

[0057] Fig.15 yes Fig.14 a rear view of the display device shown;

[0058] Fig.16 is a front view of a display device provided by an embodiment of the present disclosure;

[0059] Fig.17 yes Fig.16 a rear view of the display device shown;

[0060] Fig.18 is a front view of a display device provided by an embodiment of the present disclosure;

[0061] Fig.19 yes Fig.18 a rear view of the display device shown;

[0062] Fig. 20 is a structural diagram of a circuit board provided by an embodiment of the present disclosure;

[0063] Fig.21 is a top view of a logic board provided by an embodiment of the present disclosure;

[0064] Fig. 22 is a structural schematic diagram of a laptop computer provided by an embodiment of the present disclosure;

[0065] Fig.23 It is a structural schematic diagram of a notebook computer provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0066] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0067] In the related art, the display screen includes a display panel and a logic board integrated on the back of the display panel, also known as a timing controller (English: Timing Control, abbreviated: T-CON) board. The logic board is electrically connected to the processor of the electronic device through a flexible printed circuit (English: Flexible Printed Circuit, abbreviated: FPC). The processor provides a control signal to the display screen through the flexible printed circuit board to control the display screen to display the picture. However, integrating the logic board on the back of the display panel makes the display screen thicker, which cannot meet the requirements of foldable electronic devices for the thickness of the display screen.

[0068] Figure 1 is a front view of a display device provided by an embodiment of the present disclosure. Figure 1 The display device includes a flexible display panel 10, a plurality of driving integrated circuits (ICs) 20, a logic board 30 and a circuit board 40.

[0069] The flexible display panel 10 has a display area 101 and a peripheral area 102 surrounding the display area 101 .

[0070] In the embodiment of the present disclosure, the display area 101 is used to display a picture, and the peripheral area 102 is arranged around the display area 101. Exemplarily, the display area 101 includes a plurality of gate lines extending along a first direction and a plurality of data lines extending along a second direction, and the first direction and the second direction are perpendicular to each other. The plurality of gate lines and the plurality of data lines cross to define a plurality of pixel areas, each pixel area is provided with a pixel, and each pixel has a light-emitting element, such as an organic light-emitting diode (English: Organic Light-Emitting Diode, referred to as: OLED). The peripheral area 102 is used to arrange a driver IC and various signal lines, etc.

[0071] A plurality of driver ICs 20 are located in the peripheral area 102, and the plurality of driver ICs 20 are arranged at intervals along the first side 111 of the flexible display panel 10, that is, the driver ICs 20 are arranged at intervals along the first side 111, indicating that the arrangement direction of the plurality of driver ICs 20 is the same as the extension direction of the first side 111. The logic board 30 has an interface 301 for electrically connecting to a processor of an electronic device. One end of the circuit board 40 is electrically connected to the driver IC 20, and the other end of the circuit board 40 is electrically connected to the logic board 30. The circuit board 40 has a first bendable section 41, a second bendable section 42, and a third bendable section 43. When the circuit board 40 is not bent, the first bendable section 41, the second bendable section 42, and the third bendable section 43 are sequentially arranged on the circuit board 40 in the direction from the end of the circuit board 40 electrically connected to the flexible display panel 10 to the end of the circuit board 40 electrically connected to the logic board 30. The flexible display panel 10 is provided with pads electrically connected to the driver IC 20 and the circuit board 40 respectively, and the pads electrically connected to the driver IC 20 and the pads electrically connected to the circuit board 40 are electrically connected via wires.

[0072] Figure 2 It is a left view of a display device provided by an embodiment of the present disclosure. Figure 3 It is a rear view of a display device provided by an embodiment of the present disclosure. Figure 1 This is the main view of the circuit board without bending. Figure 2 and Figure 3 This is the rear view of the circuit board after it is bent. Figure 2 and Figure 3 The flexible display panel 10 has a first surface 103 and a second surface 104 opposite to each other. The plurality of driving ICs 20 are all located on the first surface 103 of the flexible display panel 10. The first bendable section 41 is configured to bend along the first side edge 111 to the second surface 104 of the flexible display panel 10, the second bendable section 42 is configured to bend on the side where the second surface 104 is located, so that the logic board 30 extends from the first side edge 111, and the third bendable section 43 is configured to bypass the hinge axis of the electronic device.

[0073] Exemplarily, the flexible display panel 10 includes an array substrate, a light-emitting device layer, and a packaging layer stacked in sequence, and the driver IC 20 is located on the surface of the packaging layer of the flexible display panel 10 .

[0074] Exemplarily, the first bendable section 41 is configured to bend along the first side edge 111 to the second surface 104 of the flexible display panel 10, indicating that the circuit board 40 is bent around at least a portion of the first side edge 111 (for example, around an area or multiple spaced areas of the first side edge 111) at the first bendable section 41, so that a portion of the circuit board 40 is located on the second surface 104 of the flexible display panel 10.

[0075] In the disclosed embodiment, a plurality of driver integrated circuits are arranged at intervals along the first side of the flexible display panel in the peripheral area of ​​the flexible panel, and the driver integrated circuits are electrically connected to the logic board through the circuit board. Since the circuit board is provided with three bendable sections, the circuit board can extend the logic board from the first side of the flexible display panel through the three bendable sections, and bypass the hinge axis of the electronic device, so that the logic board is not located on the flexible display panel, thereby reducing the thickness of the flexible display panel. At the same time, the circuit board is bent to the second surface of the flexible display panel through the first bendable section, which can reduce the length of the circuit board located on the first side of the flexible display panel, thereby reducing the width of the non-display area on the first side of the flexible display panel, and further reducing the frame of the display device.

[0076] In the embodiment of the present disclosure, multiple driver ICs 20 are arranged on the flexible display panel 10 in the form of COP (Chip On Panel) packaging. In order to accommodate these multiple driver ICs 20, the first side 111 is longer and not easy to bend. If the flexible display panel is forcibly bent, the driver IC 20 will be easily damaged. Therefore, in the embodiment of the present disclosure, the border of the display device is reduced by bending the circuit board 40. Compared with directly bending the flexible display panel, the driver IC 20 can be protected to prevent the driver IC 20 from being damaged when bent.

[0077] In an implementation of the embodiment of the present disclosure, the number of the driver ICs 20 is between 4 and 10.

[0078] For medium and large-sized electronic devices, the area of ​​the display region 101 increases, and the number of pixels arranged in the display region 101 will increase. At the same time, in order to improve the resolution of the display device, the number of pixels in the display region 101 will further increase. Correspondingly, the number of wirings on the flexible display panel will also increase. However, the number of pins of a driver IC is limited, so more driver ICs 20 need to be arranged to be electrically connected to the wirings in the display device.

[0079] Optionally, in the embodiment of the present disclosure, the number of the driver ICs 20 is 6, and the display device of the present disclosure is described below by taking 6 driver ICs 20 as an example.

[0080] In the embodiment of the present disclosure, the first surface 103 of the flexible display panel 10 is a side of the flexible display panel 10 that displays images, that is, a display surface of the flexible display panel 10 , and the second surface 104 is a back surface of the flexible display panel 10 .

[0081] In the disclosed embodiment, the interface 301 of the logic board 30 is electrically connected to the processor of the electronic device, and the processor sends a control signal to the driver IC 20 through the logic board 30 and the circuit board 40, thereby controlling the display panel to display an image.

[0082] Optionally, the interface 301 is a connector. The processor is also provided with a connector, through which the logic board 30 and the processor are electrically connected, so as to facilitate assembly and disassembly of the logic board 30 and the processor.

[0083] In the embodiment of the present disclosure, the circuit board 40 is bent from the first surface 103 of the flexible display panel 10 to the second surface 104 of the flexible display panel 10 in the first bendable section 41; the circuit board 40 is bent from the side where the second surface 104 of the flexible display panel 10 is located to the side of the peripheral area 102 in the second bendable section 42, and is opposite to the first side edge 111.

[0084] The third bendable section 43 is configured to bypass the hinge axis of the electronic device, which means that the third bendable section 43 is configured to move in contact with the outer peripheral wall of the hinge axis when the display screen of the electronic device rotates relative to the body around the hinge axis. Therefore, the third bendable section 43 can also be called a hinge area. The display screen to which the flexible display panel belongs and the body of the electronic device are hinged to each other, and the display device is suitable for electronic devices with foldable display screens. In addition, since the display device of the embodiment of the present disclosure includes a plurality of driver ICs 20, when the number of pixels corresponding to each driver IC 20 is certain, more pixels can be controlled by a plurality of driver ICs 20. Therefore, it is particularly suitable for electronic devices with larger display screen sizes to improve the resolution of the electronic device. For example, a laptop computer (Note Book, NB for short).

[0085] In the embodiment of the present disclosure, the first bendable section 41 , the second bendable section 42 and the third bendable section 43 are all single-layer structures. The single-layer structure is easy to bend, thereby ensuring the bendability of the circuit board 40 .

[0086] See again Figures 1 to 3 The circuit board 40 includes a plurality of first flexible circuit boards 401 , a printed circuit board 402 and a second flexible circuit board 403 .

[0087] Each first flexible circuit board 401 is electrically connected to a driver IC 20, and the first bendable section 41 is at least a part of the first flexible circuit board 401. The printed circuit board 402 is electrically connected to the plurality of first flexible circuit boards 401, for example, the printed circuit board 402 is electrically connected to all the first flexible circuit boards 401. The printed circuit board 402 is located on the second surface 104. One end of the second flexible circuit board 403 is electrically connected to the printed circuit board 402, and the other end of the second flexible circuit board 403 is electrically connected to the logic board 30, and the second bendable section 42 and the third bendable section 43 are at least a part of the second flexible circuit board 403.

[0088] In the embodiment of the present disclosure, the logic board 30 provides a control signal to the driving IC 20 through the second flexible circuit board 403, the printed circuit board 402 and the first flexible circuit board 401, thereby controlling the display screen of the flexible display panel 10. The first bendable section 41 is arranged on the first flexible circuit board 401, that is, the first flexible circuit board 401 is bent to the second surface 104 of the flexible display panel 10. Since the printed circuit board 402 is electrically connected to the first flexible circuit board 401, the printed circuit board 402 is located on the second surface 104 of the flexible display panel 10. The printed circuit board 402 is a hard board and is not easy to bend. One end of the second flexible circuit board 403 is electrically connected to the printed circuit board 402, so one end of the second flexible circuit board 403 is also located on the second surface 104 of the flexible display panel 10. The second bendable section 42 is arranged on the second flexible circuit board 403, and is bent to one side of the peripheral area 102 through the second flexible circuit board 403. Since the other end of the second flexible circuit board 403 is electrically connected to the logic board 30, the logic board 30 is located on one side of the peripheral area 102. The logic board 30 is not located on the flexible display panel 10, thereby reducing the thickness of the flexible display panel 10. At the same time, the width of the non-display area of ​​the first side edge 111 of the flexible display panel 10 is reduced, thereby reducing the frame of the display device.

[0089] At the same time, a printed circuit board 402 is arranged in the circuit board 40. The tolerance of the gold finger (conductive contact) of the printed circuit board 402 is smaller than the tolerance of the gold finger of the flexible circuit board, which can meet the requirements of the binding device, making it more convenient to bind the printed circuit board and ensuring the binding effect. The printed circuit board 402 has a large number of layers, and multiple first flexible circuit boards 401 are electrically connected to the printed circuit board 402. The part of the circuit board 40 that does not need to be folded is arranged as the printed circuit board 402, which is convenient for arranging the wiring. At the same time, the first flexible circuit board 401 and the second flexible circuit board 403 are arranged to ensure the bendability of the circuit board 40.

[0090] Optionally, in the embodiment of the present disclosure, the overall tolerance (English: Total Pitch) of the gold finger area of ​​the printed circuit board 402 is ±30 micrometers (μm), which can meet the binding requirements of the binding device.

[0091] In the embodiment of the present disclosure, the first flexible circuit board 401 has a pad area for arranging pads at opposite ends, and the first bendable section 41 is a portion between the two pad areas on the first flexible circuit board 401. The second flexible circuit board 403 also has a pad area for arranging pads at opposite ends, and the second bendable section 42 and the third bendable section 43 are portions located between the two pad areas on the second flexible circuit board 403.

[0092] like Figure 1 and Figure 3 As shown, the number of the first flexible circuit boards 401 is equal to the number of the driver ICs 20. The first flexible circuit boards 401 are electrically connected to the driver ICs 20 in a one-to-one correspondence, that is, one first flexible circuit board 401 is electrically connected to one driver IC 20, and the controller provides an electrical signal to the driver IC 20 through the first flexible circuit boards 401. At this time, the electrical signals on each first flexible circuit board 401 are transmitted independently of each other, so as to avoid that one of the first flexible circuit boards 401 is damaged and affects the transmission of electrical signals of multiple driver ICs 20.

[0093] In other implementations, the number of first flexible circuit boards 401 is less than the number of driver ICs 20, and one first flexible circuit board 401 can be electrically connected to two or more driver ICs 20. When binding the first flexible circuit board 401 and the driver IC 20, the number of binding devices can be reduced.

[0094] Figure 4 is a structural diagram of a first flexible circuit board provided by an embodiment of the present disclosure. Figure 4 A plurality of pads (English: Pad) are provided on the first flexible circuit board 401 , and the plurality of pads include a first pad 501 and a second pad 502 . The first pad 501 and the second pad 502 are electrically connected via a first connecting line 503 .

[0095] For example, the first flexible circuit board 401 may be rectangular, and the first pad 501 and the second pad 502 are arranged along two opposite sides of the rectangle, wherein the first pad 501 is electrically connected to the driver IC 20 , and the second pad 502 is electrically connected to the printed circuit board 402 .

[0096] Figure 5 is a structural diagram of a printed circuit board provided by an embodiment of the present disclosure. Figure 5The printed circuit board 402 is also provided with a plurality of pads, including a third pad 504 and a fourth pad 505 , and the third pad 504 and the fourth pad 505 are electrically connected via a second connection line 506 .

[0097] Exemplarily, the printed circuit board 402 is in a long strip shape, and the extension direction of the printed circuit board 402 is consistent with the extension direction of the first side. The third pads 504 are arranged at intervals along a long side of the printed circuit board 402, and the third pads 504 are electrically connected to the second pads 502 in a one-to-one correspondence, that is, one third pad 504 is electrically connected to one second pad 502. The fourth pad 505 is arranged in the middle of the other long side of the printed circuit board 402 to facilitate electrical connection with the second flexible circuit board 403.

[0098] Figure 6 is a structural diagram of a second flexible circuit board provided by an embodiment of the present disclosure. Figure 6 The second flexible circuit board 403 is provided with a plurality of pads, including a fifth pad 507 and a sixth pad 508, which are electrically connected to each other via a third connection line 509. The fourth pad 505 is electrically connected to the fifth pad 507.

[0099] In the embodiment of the present disclosure, the pads may be electrically connected to each other by binding, that is, by conductive glue.

[0100] In the embodiment of the present disclosure, the number of layers of the printed circuit board 402 is between 6 and 10 layers, and multiple first flexible circuit boards 401 need to be electrically connected to the printed circuit board 402, so that there are more traces on the printed circuit board 402. The larger number of layers of the printed circuit board 402 can distribute the traces on different signal layers on the printed circuit board 402, and the printed circuit board 402 can be made smaller, which is conducive to the miniaturization of the device.

[0101] In the embodiment of the present disclosure, the middle area of ​​the second flexible circuit board 403 is a single-layer structure, that is, the second bendable section 42 and the third bendable section 43 are both single-layer structures, which are easy to bend.

[0102] Figure 7 This is a front view of a display device provided by an embodiment of the present disclosure. Figure 8 yes Figure 7 A rear view of the display device shown, wherein Figure 7 This is the main view of the circuit board without bending. Figure 8 This is the rear view of the circuit board after it is bent. Figure 7 and Figure 8 The circuit board 40 includes a third flexible circuit board 404 and a fourth flexible circuit board 405 .

[0103] Each third flexible circuit board 404 is electrically connected to a driver IC 20, and the first bendable section 41 is at least a part of the third flexible circuit board 404. The fourth flexible circuit board 405 has a first end 451 and a second end 452 opposite to each other, the first end 451 is electrically connected to the third flexible circuit board 404, the second end 452 is electrically connected to the logic board 30, and the second bendable section 42 and the third bendable section 43 are at least a part of the fourth flexible circuit board 405.

[0104] In the embodiment of the present disclosure, the circuit board 40 is arranged in the form of two flexible circuit boards. Compared with the form of three circuit boards, it is only necessary to bind the third flexible circuit board 404 with the driver IC 20, the third flexible circuit board 404 with the fourth flexible circuit board 405, and the fourth flexible circuit board 405 with the logic board 30, that is, three bindings, which can reduce the number of binding times and improve the efficiency of manufacturing the display device.

[0105] In the embodiment of the present disclosure, the third flexible circuit board 404 and the fourth flexible circuit board 405 can be bound together by anisotropic conductive film (ACF). This binding method can be referred to as FOF (FPC on FPC).

[0106] The structure and arrangement of the third flexible circuit board 404 are the same as those of the first flexible circuit board 401 , and are not described in detail herein.

[0107] In the embodiment of the present disclosure, the first bendable section 41 is located between the pad regions at two opposite ends of the third flexible circuit board 404. The second bendable section 42 and the third bendable section 43 are located between the pad regions at two opposite ends of the fourth flexible circuit board 405.

[0108] like Figure 7 As shown, the fourth flexible circuit board 405 includes a lateral extension portion 454 extending along the arrangement direction a of the driver IC 20 and a longitudinal connection portion 455 perpendicularly connected to the lateral extension portion 454 , the lateral extension portion 454 is electrically connected to the six third flexible circuit boards 404 , and the longitudinal connection portion 455 is electrically connected to the logic board 30 .

[0109] In the embodiment of the present disclosure, the fourth flexible circuit board 405 is arranged as a "T"-shaped flexible circuit board, the lateral extension portion 454 is electrically connected to the third flexible circuit board 404, and the longitudinal electrical connection portion 455 is electrically connected to the logic board 30. That is, only three binding operations are required: the driver IC 20 is bound to the third flexible circuit board 404, the third flexible circuit board 404 is bound to the lateral extension portion 454, and the longitudinal connection portion 455 is bound to the logic board 30. This can reduce the number of binding times and improve work efficiency.

[0110] The lateral extension portion 454 and Figure 1 The arrangement of the printed circuit board 402 is the same as that of the longitudinal connecting portion 455. Figure 1 The second flexible circuit board 403 is arranged in the same manner as in Figure 7 The transverse extension portion 454 and the longitudinal connection portion 455 are both flexible circuit boards and can be manufactured in an integrated manner.

[0111] It should be noted that if Figure 7 As shown, one third flexible circuit board 404 is electrically connected to one driving IC 20 . In other implementations, one third flexible circuit board 404 may be electrically connected to two or more driving ICs 20 . The present disclosure is not limited to this.

[0112] Fig. 9 is a schematic diagram of the structure of a third flexible circuit board provided by an embodiment of the present disclosure. Fig. 9 The third flexible circuit board 404 is provided with a plurality of pads, including a seventh pad 510 and an eighth pad (not shown in the figure). The seventh pad 510 is electrically connected to the second pad 502, the eighth pad is electrically connected to the logic board 30, and the seventh pad 510 and the eighth pad are electrically connected via a fourth connection line 511.

[0113] In the embodiment of the present disclosure, the middle area of ​​the third flexible circuit board 404 is a single-layer circuit board structure to facilitate bending of the third flexible circuit board 404 .

[0114] Fig.10 This is a front view of a display device provided by an embodiment of the present disclosure. Fig.11 yes Fig.10 A rear view of the display device shown, wherein Fig.10 This is the main view of the circuit board without bending. Fig.11 This is the rear view of the circuit board after it is bent. Fig.10 and Fig.11 The third flexible circuit board 404 includes a main body 441 and at least two first branches 442 connected to the main body 441, and each first branch 442 is electrically connected to a corresponding driver IC 20. The first end 451 of the fourth flexible circuit board 405 has at least two second branches 453, and the at least two second branches 453 of the fourth flexible circuit board 405 are respectively electrically connected to a main body 441 of the third flexible circuit board 404.

[0115] In the embodiment of the present disclosure, a third flexible circuit board 404 includes at least two first branches 442, that is, a third flexible circuit board 404 is electrically connected to at least two driver ICs 20, which can reduce the number of third flexible circuit boards 404. When the driver IC 20 is bound to the third flexible circuit board 404, the number of binding devices is equal to the number of third flexible circuit boards 404. Therefore, when multiple driver ICs 20 are electrically connected to a third flexible circuit board 404, the number of binding devices can be reduced relative to when one driver IC 20 is electrically connected to a third flexible circuit board 404.

[0116] Fig.10 The third flexible circuit board 404 shown has the same function as the third flexible circuit board 404 and the first flexible circuit board 401, and both are electrically connected to the driver IC 20. The difference is that: Fig.10 The third flexible circuit board 404 is made by combining multiple flexible circuit boards and is electrically connected to different driving ICs 20 through the first branches 442 .

[0117] Fig.10 The third flexible circuit board 404 shown is a whole, that is, the main body 441 and the first branch 442 are integrally formed, and both the main body 441 and the first branch 442 are flexible circuit boards and can be bent.

[0118] Fig.10 The display panel shown includes two third flexible circuit boards 404, one third flexible circuit board 404 has three first branches 442, that is, the third flexible circuit board 404 is in a trident shape, and the first end 451 of the fourth flexible circuit board 405 has two second branches 453, that is, the fourth flexible circuit board 405 is in a "Y" shape, and the two second branches 453 are electrically connected to the two third flexible circuit boards 404 respectively.

[0119] Fig.12 This is a front view of a display device provided by an embodiment of the present disclosure. Fig.13 yes Fig.12 A rear view of the display device shown, wherein Fig.12 This is the main view of the circuit board without bending. Fig.13 This is the rear view of the circuit board after it is bent. Fig.12 and Fig.13 The main body 441 of the third flexible circuit board 404 is a printed circuit board, and the first branch 442 is a flexible circuit board, which ensures the bendability of the third flexible circuit board 404. The main body 441 is a printed circuit board, and the tolerance of the gold finger is larger, which makes it more convenient to bind the printed circuit board and ensure the binding effect.

[0120] Since one fourth flexible circuit board 405 needs to be electrically connected to a plurality of third flexible circuit boards 404 , a second branch 453 is arranged at the first end 451 of the fourth flexible circuit board 405 to be electrically connected to the third flexible circuit boards 404 via the second branch 453 .

[0121] Fig.14 is a top view of a display device provided by an embodiment of the present disclosure. Fig.15 yes Fig.14 A rear view of the display device shown, wherein Fig.14 This is the main view of the circuit board without bending. Fig.15 This is the rear view of the circuit board after it is bent. Fig.14 and Fig.15 The display panel includes three third flexible circuit boards 404 , one third flexible circuit board 404 has two first branches 4 , and the first end 451 of the fourth flexible circuit board 405 has three second branches 453 , and the three second branches 453 are electrically connected to the three third flexible circuit boards 404 respectively.

[0122] Fig.16 This is a front view of a display device provided by an embodiment of the present disclosure. Fig.17 yes Fig.16 A rear view of the display device shown, wherein Fig.16 This is the main view of the circuit board without bending. Fig.17 This is the rear view of the circuit board after it is bent. Fig.16 and Fig.17 The circuit board 40 includes two fifth flexible circuit boards 406 , one end of the fifth flexible circuit board 406 is electrically connected to the three driving ICs 20 , and the other end of the fifth flexible circuit board 406 is electrically connected to the logic board 30 .

[0123] In the disclosed embodiment, the circuit board 40 is directly arranged as an integral fifth flexible circuit board 406, and the driver IC 20 is electrically connected to the logic board 30 through the fifth flexible circuit board 406. It only needs to be bound at both ends of the fifth flexible circuit board 406, which reduces the number of binding times while ensuring the bendability of the circuit board 40.

[0124] Fig.16 and Fig.17 The display device shown is different from the previous display device in that Fig.16 and Fig.17 Set up the board as a whole.

[0125] Fig.16 and Fig.17In the display device shown, the circuit board 40 includes two fifth flexible circuit boards 406 , the logic board 30 has two first connectors 302 , one end of the fifth flexible circuit board 406 is electrically connected to the three driver ICs 20 , and the other end of the fifth flexible circuit board 406 is electrically connected to the first connector 302 .

[0126] In the embodiment of the present disclosure, two fifth flexible circuit boards 406 are arranged in the display device. On the one hand, it can achieve the above-mentioned effect of reducing the number of binding times and ensuring the bendability of the circuit board, while reducing the number of fifth flexible circuit boards 406. Compared with arranging multiple fifth flexible circuit boards 406, the number of binding devices can be reduced.

[0127] In other implementations, multiple fifth flexible circuit boards 406 can be arranged in the display device. In this case, multiple first connectors 302 need to be arranged on the logic board 30. The first connectors 302 are electrically connected to the fifth flexible circuit boards 406 one by one, that is, one first connector 302 is electrically connected to one fifth flexible circuit board 406.

[0128] Fig.18 This is a front view of a display device provided by an embodiment of the present disclosure. Fig.19 yes Fig.18 A rear view of the display device shown, wherein Fig.18 This is the main view of the circuit board without bending. Fig.19 This is the rear view of the circuit board after it is bent. Fig.18 and Fig.19 Three fifth flexible circuit boards 406 are arranged in the display device, one fifth flexible circuit board 406 is electrically connected to two driving ICs 20 , and three first connectors 302 are provided on the logic board 30 .

[0129] In other implementations, other numbers of fifth flexible circuit boards 406 and first connectors 302 may be provided according to actual needs, and the present disclosure does not limit this.

[0130] In the embodiment of the present disclosure, the arrangement of the pads in the third flexible circuit board 404 , the fourth flexible circuit board 405 and the fifth flexible circuit board 406 is consistent with the arrangement of the pads in the first flexible circuit board 401 , which will not be described in detail herein.

[0131] It should be noted that in Figures 1 to 14 In the illustrated embodiment, the circuit board 40 is electrically connected to the logic board via a solder pad. Alternatively, the circuit board 40 may be electrically connected to the logic board via a connector. Fig. 20 The structure of the circuit board 40 electrically connected to the logic board through the connector is exemplified.

[0132] Fig. 20is a structural diagram of a circuit board provided by an embodiment of the present disclosure. Fig. 20 , the other end of the circuit board 40 has two third branches 44. Among them, the logic board 30 has two first connectors 302. Each third branch 44 has a second connector 45, and the first connector 302 and the second connector 45 are electrically connected one by one, that is, one first connector 302 and one second connector 45 are electrically connected. That is, the circuit board 40 and the logic board 30 are electrically connected through the connector.

[0133] In the disclosed embodiment, the circuit board 40 is electrically connected to the logic board 30 through the second connector 45 and the first connector 302, that is, the circuit board 40 and the logic board 30 are electrically connected by plugging. When the logic board 30 is damaged, it is easy to disassemble without replacing the entire panel, saving resources.

[0134] Furthermore, in this implementation, the third branch 44 is arranged at the second end of the circuit board 40. Since the second end of the circuit board 40 is flexible and bendable, the plurality of third branches 44 can move relative to each other, which facilitates the electrical connection between the second connector 45 and the first connector 302. For example, the second connector 45 on one third branch 44 is electrically connected to one first connector 302 first, and the remaining third branches 44 may not correspond to other first connectors 302. In this case, the third branch 44 can be slightly moved so that the second connector 45 on the third branch 44 can be electrically connected to the first connector 302.

[0135] Optionally, the circuit board 40 has a double-layer circuit board structure in the area where the second connector 45 is located. Since the arrangement order of the signal lines on the flexible display panel is usually inconsistent with the arrangement order of the signal lines on the processor, it is necessary to adjust the arrangement order of the signal lines on the circuit board 40. By setting the area where the second connector 45 is located to a double-layer circuit board structure, the order of the signal lines can be adjusted using another conductive pattern layer.

[0136] Optionally, in order to ensure the connection strength between the circuit board and the logic board, a reinforcing plate may be provided in the area where the second connector 45 is located. The reinforcing plate and the second connector 45 are located on two opposite sides of the circuit board.

[0137] Fig.21 is a top view of a logic board provided by an embodiment of the present disclosure. Fig.21 The logic board 30 includes a carrier circuit board and a plurality of electronic devices. The carrier circuit board has two opposite carrier surfaces, and the plurality of electronic devices are respectively located on the two carrier surfaces. The interface is also located on the carrier surface of the carrier circuit board.

[0138] Electronic devices include but are not limited to T-CON IC, power supply (English: Power Management Integrated Circuit, referred to as: PMIC) chip, storage (English: Flash) chip and level conversion (English: Level Shifter) unit, as well as capacitors, resistors and other components.

[0139] Here, T-CON IC is used to generate the timing signals required by the source driver IC (such as the aforementioned driver IC20) and the gate driver circuit; and convert the input signal received from the processor into a data signal acceptable to the source driver IC. T-CON IC can be embedded with a variety of basic image processing algorithms, such as frame rate control (English: Frame Rate Contro, abbreviated as: FRC), overdrive, color engine (Color Engine), Demura, Deburn-In, etc. PMIC is used to provide voltage signals and / or current signals to other chips and flexible display panels. Flash is used to store image processing algorithms, such as gamma correction, Demura and other algorithms. Level Shifter is used to perform level conversion according to the timing signal generated by T-CON IC, generate gate high level VGH, gate low level VGL and other signals to provide to the gate driver circuit, and the gate driver circuit outputs signals to the gate line under the control of the signal output by Level Shifter.

[0140] Optionally, at least one bearing surface of the logic board is divided into a plurality of mounting areas, each mounting area being used to mount components of different heights. In a possible embodiment, the components mounted on one bearing surface of the logic board have the same height, and the other bearing surface is divided into a plurality of mounting areas, for example, Fig.21 Different fill lines in the diagram indicate different installation areas, which saves the internal space of the electronic device occupied by the logic board.

[0141] In the disclosed embodiment, the logic board 30 also has a mounting hole, and the logic board 30 is mounted on the host through the mounting hole.

[0142] In one implementation of the embodiment of the present disclosure, the number of layers of the logic board 30 is between 8 and 10. In the embodiment of the present disclosure, since the logic board 30 is arranged on the host and has a limited area, but the number of electronic devices is large, the number of layers of the logic board 30 is increased to meet the wiring requirements of the electronic devices on the logic board 30.

[0143] An embodiment of the present disclosure also provides an electronic device, which has a display screen and a body, wherein the display screen and the body are hinged via a hinge axis, a processor is provided inside the body, the display screen includes a display device as shown in any one of the above figures, and the processor is electrically connected to an interface of a logic board.

[0144] In one implementation of the embodiment of the present disclosure, the electronic device includes a laptop computer, a camera, and the like.

[0145] Fig. 22 and Fig.23 : is a schematic diagram of the structure of a notebook computer provided by an embodiment of the present disclosure. Fig. 22 This is a diagram of a laptop computer opened. Fig.23 is a diagram of a laptop computer when it is closed. Fig. 22 and Fig.23 The display screen 1 and the host 2 of the laptop computer are hinged through a hinge shaft 3. The circuit board 40 electrically connects the flexible display panel (not shown in the figure) in the display screen 1 and the host 2. The third bendable section 43 is attached to the hinge shaft 3. When the hinge shaft 3 rotates, the third bendable section 43 moves in contact with the outer wall of the hinge shaft 3.

[0146] The above description is only an optional embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A display device, characterized in that: The display device comprises: A flexible display panel (10) comprising a display area (101) and a peripheral area (102) surrounding the display area (101); A plurality of driver integrated circuits (20) located on the first surface (103) of the flexible display panel (10) and in the peripheral area (102), the plurality of driver integrated circuits (20) being arranged at intervals along a first side edge (111) of the flexible display panel (10); A logic board (30) having an interface (301) for electrically connecting to a processor of an electronic device; A circuit board (40), connected between the flexible display panel (10) and the logic board (30), and the circuit board (40) is electrically connected to the driving integrated circuit (20) and the logic board (30) respectively; the circuit board (40) comprises: a printed circuit board (402), a second flexible circuit board (403) and at least one first flexible circuit board (401), the first flexible circuit board (401) is electrically connected to at least one driving integrated circuit (20), the printed circuit board (402) is electrically connected to the at least one first flexible circuit board (401), the printed circuit board (402) is located on the second surface (104), one end of the second flexible circuit board (403) is electrically connected to the printed circuit board (402), and the other end is electrically connected to the logic board (30); The circuit board (40) comprises a first bendable section (41), a second bendable section (42) and a third bendable section (43); the first bendable section (41) is at least a part of the first flexible circuit board (401); the second bendable section (42) and the third bendable section (43) are at least a part of the second flexible circuit board (403); the first bendable section (41) is configured to bend along the first side edge (111) to the second surface of the flexible display panel (10); The second surface (104) and the first surface (103) are two opposite surfaces of the flexible display panel (10), the second bendable section (42) is configured to bend on the side where the second surface (104) is located, so that the logic board (30) extends from the first side edge (111), and the third bendable section (43) is configured to bypass the hinge axis of the electronic device, so that the logic board (30) is installed on the host of the electronic device through the installation hole on the logic board (30).

2. The display device according to claim 1, characterized in that The first flexible circuit board (401) is electrically connected to the driving integrated circuit (20) in a one-to-one correspondence.

3. The display device according to claim 1, characterized in that The circuit board (40) comprises: A third flexible circuit board (404) is electrically connected to at least one of the driving integrated circuits (20), wherein the first bendable section (41) is at least a part of the third flexible circuit board (404); The fourth flexible circuit board (405) has a first end (451) and a second end (452) opposite to each other, wherein the first end (451) is electrically connected to at least two of the third flexible circuit boards (404), and the second end (452) is electrically connected to the logic board (30), and the second bendable section (42) and the third bendable section (43) are at least a part of the fourth flexible circuit board (405).

4. The display device according to claim 3, characterized in that: The third flexible circuit board (404) comprises a main body (441) and at least two first branches (442) connected to the main body (441), and each of the first branches (442) is electrically connected to a corresponding driving integrated circuit (20); or, The third flexible circuit board (404) is electrically connected to the driving integrated circuit (20) in a one-to-one correspondence.

5. The display device according to claim 4, characterized in that: The first end (451) of the fourth flexible circuit board (405) has at least two second branches (453), and each of the second branches (453) is electrically connected to one of the third flexible circuit boards (404); or, The fourth flexible circuit board (405) comprises a transverse extension portion (454) extending along the arrangement direction (a) of the driver integrated circuits (20) and a longitudinal connection portion (455) vertically connected to the transverse extension portion (454), the transverse extension portion (454) being electrically connected to at least two of the third flexible circuit boards (404), and the longitudinal connection portion (455) being electrically connected to the logic board (30).

6. The display device according to claim 1, characterized in that: The circuit board (40) comprises: At least two fifth flexible circuit boards (406), one end of each of the fifth flexible circuit boards (406) being electrically connected to at least two of the driving integrated circuits (20), and the other end of each of the fifth flexible circuit boards (406) being electrically connected to the logic board (30).

7. The display device according to any one of claims 1 to 6, characterized in that: The logic board (30) has at least two first connectors (302); One end of the circuit board (40) has at least two third branches (44), each of the third branches (44) has a second connector (45), and the first connector (302) and the second connector (45) are electrically connected in a one-to-one correspondence.

8. The display device according to any one of claims 1 to 6, characterized in that: The first bendable section (41), the second bendable section (42) and the third bendable section (43) are all single-layer structures.

9. The display device according to any one of claims 1 to 6, characterized in that: The number of the driving integrated circuits (20) is between 4 and 10.

10. The display device according to any one of claims 1 to 6, characterized in that: The logic board includes a load-bearing circuit board and a plurality of electronic components. The load-bearing circuit board has two opposite load-bearing surfaces, and the plurality of electronic components are respectively located on the two load-bearing surfaces.

11. A display device, characterized in that: The display device comprises: A flexible display panel (10) comprising a display area (101) and a peripheral area (102) surrounding the display area (101); A plurality of driver integrated circuits (20) located on the first surface (103) of the flexible display panel (10) and in the peripheral area (102), the plurality of driver integrated circuits (20) being arranged at intervals along a first side edge (111) of the flexible display panel (10); A printed circuit board (402) is located on the second surface (104) of the flexible display panel (10); A first flexible circuit board (401) having a first bendable section (41), one end of the first flexible circuit board (401) being electrically connected to the driving integrated circuit (20), the other end of the first flexible circuit board (401) being folded to a second surface (104) of the flexible display panel (10) through the first bendable section (41) and electrically connected to the printed circuit board (402), the second surface (104) and the first surface (103) being two opposite surfaces of the flexible display panel (10); A logic board (30) having an interface (301) for electrically connecting to a processor of an electronic device; A second flexible circuit board (403) has one end electrically connected to the printed circuit board (402) and the other end electrically connected to the logic board (30). The second flexible circuit board (403) includes a second bendable section (42) and a third bendable section (43). The second bendable section (42) is configured to be folded on the side where the second surface (104) is located, so that the third bendable section (43) and the logic board (30) extend from the first side (111). The third bendable section (43) is configured to bypass the hinge axis of the electronic device, so that the logic board (30) is installed on the host of the electronic device through the installation hole on the logic board (30).

12. The display device according to claim 11, characterized in that: The logic board (30) has at least two first connectors (302), the other end of the second flexible circuit board (403) has two third branches (44), each of the third branches (44) has a second connector (45), the first connectors (302) and the second connectors (45) are electrically connected in a one-to-one correspondence, so that the second flexible circuit board (403) and the logic board (30) are electrically connected.

13. The display device according to claim 12, characterized in that: The second flexible circuit board (403) comprises a single-layer board area and a double-layer board area which are connected to each other, the second bendable section (42) and the third bendable section (43) are both located in the single-layer board area, and the second connector (45) is located in the double-layer board area.

14. An electronic device comprising a display screen and a body, wherein the display screen and the body are hinged via a hinge axis, wherein a processor is provided inside the body, wherein the display screen comprises a display device as described in any one of claims 1 to 11 or a display device as described in any one of claims 11 to 13, and wherein the processor is electrically connected to an interface of the logic board.

15. The electronic device according to claim 14, characterized in that: The electronic device includes a laptop computer.

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