CN109496067B - Flexible circuit board, display panel and display device - Google Patents
Flexible circuit board, display panel and display device Download PDFInfo
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- CN109496067B CN109496067B CN201811613668.8A CN201811613668A CN109496067B CN 109496067 B CN109496067 B CN 109496067B CN 201811613668 A CN201811613668 A CN 201811613668A CN 109496067 B CN109496067 B CN 109496067B
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- circuit board
- branch
- flexible circuit
- display panel
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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
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/118—Printed elements for providing electric connections to or between printed circuits specially for flexible printed circuits, e.g. using folded portions
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/05—Flexible printed circuits [FPCs]
- H05K2201/052—Branched
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The embodiment of the invention provides a flexible circuit board, a display panel and a display device. When the flexible circuit board is used for bonding parts of the display panel, the size of a frame of the display panel can be reduced, a bonding mode is simplified, and the yield of products is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a flexible circuit board, a display panel and a display device.
Background
An electronic device having a display function may be referred to as a display device, and the display device may be classified into a liquid crystal display device, an organic light emitting diode display device, and a plasma display device in terms of the manner in which the display device emits light. With the development of electronic technology, the requirements for display devices are higher and higher, especially for narrow bezel and portability.
The display device comprises a display area and a non-display area, wherein the display area is used for displaying information such as images, characters and the like; the non-display area may be used for bonding an Integrated Chip (IC), an electronic device, and the like, so that the display area can display information such as corresponding image, text, and the like. Generally, an ic of a display device is disposed in a non-display area on any side of a display area of the display device, and is connected to a Printed Circuit Board (PCB) through a Flexible circuit board (FPC).
However, when a plurality of integrated chips are provided in the display device, the plurality of integrated chips need to be connected to the printed circuit board through the flexible circuit boards, respectively. At this time, the printed circuit board needs to have a larger size in the direction along which the integrated chips are arranged, so that other components of the display device, such as a roller connecting the display panel and the keyboard in the notebook computer, cannot be disposed on both sides of the printed circuit board, thereby being disadvantageous to the assembly of the display panel and the keyboard in the display device. If the roller connecting the display panel and the keyboard in the notebook computer is arranged on one side of the printed circuit board far away from the integrated chip, the area of the non-display area of the display device can be increased.
Disclosure of Invention
The embodiment of the invention provides a flexible circuit board, a display panel and a display device, and can solve the technical problems that the display device is difficult to assemble and the area of a non-display area is large in the prior art.
In a first aspect, an embodiment of the present invention provides a flexible circuit board, including:
at least one first branch, at least one second branch, and a connection connecting the at least one first branch and the at least one second branch;
wherein, one end of the first branch far away from the connecting part is provided with a plurality of first bonding terminals; one end of the second branch, which is far away from the connecting part, is provided with a plurality of second bonding terminals;
the flexible circuit board comprises a first face and a second face opposite to the first face; the first plurality of bond terminals are located on the first side and the second plurality of bond terminals are located on the second side.
In a second aspect, an embodiment of the present invention provides a display panel, including the flexible circuit board.
In a third aspect, an embodiment of the present invention further provides a display device, including the display panel.
According to the flexible circuit board, the display panel and the display device provided by the embodiment of the invention, the first bonding terminal of the first branch in the flexible circuit board is arranged on the first surface of the flexible circuit board, and the second bonding terminal of the second branch is arranged on the second surface of the flexible circuit board, which is far away from the first surface, so that the bonding terminals on different branches of the flexible circuit board are positioned on different surfaces of the flexible circuit board, and different components are bonded through the bonding terminals on different branches. For example, when the first bonding terminal of the first branch of the flexible circuit board provided by the embodiment of the invention is used for bonding an integrated chip of the display panel, and the second bonding terminal of the second branch is used for bonding a printed circuit board, the size of the printed circuit board can be reduced along the arrangement direction of the integrated chip by arranging the second branch at one side of the first branch, which is away from the edge position of the display panel, so that other parts of the display device, such as a roller for connecting the display panel and a keyboard by a notebook computer, can be arranged at two sides of the printed circuit board in the size reduction direction, thereby solving the technical problem of high assembly difficulty of the display device in the prior art, and reducing the size of a frame of the display panel. In addition, the bonding terminal of the different parts of will nation sets up the different faces at the flexible circuit board, can need not upset flexible circuit board and first part behind the first bonding terminal bonding first part of first branch, can adopt the second bonding terminal bonding second part of second branch to can simplify the bonding mode, avoid improving the yield of product because of the upset to the damage that flexible circuit board and first part caused.
Drawings
FIG. 1 is a schematic diagram of a display device with a prior art flexible circuit board bonding device;
fig. 2 is a schematic top view of a first side of a flexible printed circuit board according to an embodiment of the present invention;
fig. 3 is a schematic top view of a second side of a flexible printed circuit board according to an embodiment of the present invention;
fig. 4 is a schematic top view of a first surface of another flexible circuit board according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a top view of a second surface of a flexible printed circuit board according to another embodiment of the present invention
Fig. 6 is a schematic top view of a first surface of another flexible circuit board according to an embodiment of the present invention;
fig. 7 is a schematic top view of a second side of a flexible circuit board according to another embodiment of the present invention;
fig. 8 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a display panel with an FPC unbonded thereto according to an embodiment of the disclosure;
fig. 10 is a schematic structural diagram of a display panel bonded to a rear surface of an FPC according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a display panel bonded to a rear surface of an FPC according to an embodiment of the present invention;
FIG. 12 is a schematic diagram illustrating an alternative structure of a display panel according to an embodiment of the present invention for bonding a FPC to a rear surface of the display panel;
FIG. 13 is a schematic structural diagram of a display panel according to another embodiment of the present invention, wherein the display panel is bonded to the back of an FPC;
FIG. 14 is a schematic structural diagram illustrating a display panel bonded to a rear surface of an FPC according to an embodiment of the invention;
FIG. 15 is a schematic structural diagram of a display panel according to an embodiment of the present invention, wherein the display panel is bonded to the back surface of an FPC;
FIG. 16 is a schematic structural diagram illustrating a rear surface of a display panel bonded with an FPC according to an embodiment of the disclosure;
FIG. 17 is a schematic structural diagram of a rear surface of a display panel bonded with an FPC according to an embodiment of the disclosure;
fig. 18 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
The flexible circuit board is made of flexible insulating base materials, can be freely bent, wound and folded, is randomly arranged according to space layout requirements, and can be freely moved and stretched in a three-dimensional space, so that the integration of component assembly and wire connection is realized. In the prior art, bonding terminals of a flexible circuit board are located at different positions on the same surface of the flexible circuit board so as to be bonded with different components. For example, when the flexible circuit board is applied to a display panel, bonding terminals for connecting an integrated chip of the display panel and a printed circuit board, that is, the flexible circuit board is located at different positions on the same plane, are respectively connected with the integrated chip and the printed circuit board. Generally, a plurality of integrated chips are disposed in the display panel, and the integrated chips may be located in a non-display area on one side of a display area in the display panel and may be connected to the printed circuit board through a flexible circuit board. However, since the plurality of integrated chips are connected to the printed circuit board through the flexible circuit board, problems such as an increase in the size of the printed circuit board, an increase in the frame area of the display panel, or an influence on the display performance of the display panel may occur.
As shown in fig. 1, four integrated chips 13 are disposed in the display panel 100, the four integrated chips 13 are disposed in the non-display area 110 on one side of the display area 120 of the display panel 100, and the four integrated chips 13 are respectively connected to the printed circuit board 14 through the flexible circuit board 11. In order to connect each ic chip 13 to the pcb 14 through the flexible printed circuit board 11, the dimension of the pcb 14 along the direction of the arrangement of the ic chips 13, i.e. the X direction in the figure, needs to be larger than the distance between two ic chips 13 at the edge, so the pcb 14 has a larger dimension in the X direction, which makes it impossible to arrange other components, such as a roller for connecting the display panel and the keyboard of the notebook computer, at both sides of the pcb in the X direction, thereby being disadvantageous to the assembly of the display device.
In order to solve the above technical problem, an embodiment of the present invention provides a flexible circuit board, which includes at least one first branch, at least one second branch, and a connection portion connecting the at least one first branch and the at least one second branch; one end of the first branch, which is far away from the connecting part, is provided with a plurality of first bonding terminals; one end of the second branch, which is far away from the connecting part, is provided with a plurality of second bonding terminals; the flexible circuit board further comprises a first surface and a second surface which is deviated from the first surface; wherein the first plurality of bonding terminals are located on the first side and the second plurality of bonding terminals are located on the second side.
Specifically, a plurality of first bonding terminals of at least one first branch of the flexible circuit board and a plurality of second bonding terminals of at least one second branch are arranged on one side far away from the connecting part, and the plurality of first bonding terminals of at least one first branch and the plurality of second bonding terminals of at least one second branch are positioned on different surfaces of the flexible circuit board, so that different parts can be bonded through the bonding terminals on different branches of the flexible circuit board. For example, when the first bonding terminal of the first branch of the flexible circuit board provided by the embodiment of the invention is used for bonding an integrated chip of the display panel, and the second bonding terminal of the second branch is used for bonding a printed circuit board, the size of the printed circuit board can be reduced in the arrangement direction of the integrated chip by arranging the second branch at one side of the first branch, which is away from the edge position of the display panel, so that other parts of the display device, such as a roller for connecting the display panel and a keyboard by a notebook computer, can be arranged at two sides of the printed circuit board in the size reduction direction, the assembly difficulty of the display device is favorably reduced, and the frame size of the display panel is reduced. In addition, the bonding terminal of the different parts of will nation sets up the different faces at the flexible circuit board, can need not upset flexible circuit board and first part behind the first bonding terminal bonding first part of first branch, can adopt the second bonding terminal bonding second part of second branch to can simplify the bonding mode, avoid improving the yield of product because of the upset to the damage that flexible circuit board and first part caused.
Fig. 2 is a schematic top view of a first surface of a flexible printed circuit board according to an embodiment of the present invention, and fig. 3 is a schematic top view of a second surface of the flexible printed circuit board according to an embodiment of the present invention. Referring to fig. 2 and 3, the flexible circuit board 21 provided in the present embodiment includes a first branch 211 and a second branch 212, and a connection portion 213 connecting the first branch 211 and the second branch 212. Wherein, one end of the first branch far from the connection portion 213 is provided with a plurality of first bonding terminals 2111, and one end of the second branch far from the connection portion is provided with a plurality of second bonding terminals 2121. Flexible circuit board 21 has a first side 2101 and a second side 2102 facing away from first side 2101, with a plurality of first bonding terminals 2111 located at first side 2101 and a plurality of second bonding terminals 2121 located at second side 2102.
It should be noted that fig. 2 and fig. 3 are only exemplary drawings of a flexible circuit board provided in an embodiment of the present invention, and in other embodiments of the present invention, the flexible circuit board may further include n first branches and m second branches, where n and m are both integers greater than 1, and n and m may be the same or different.
Specifically, the flexible circuit board 21 may be provided with corresponding components and may be used as a connection wire to connect other components. The first external connection member is bonded by the plurality of first bonding terminals 2111 of the first branch 211 of the flexible circuit board 21, and the second external connection member is bonded by the plurality of second bonding terminals 2121 of the second branch 212 of the flexible circuit board 21, so that the first external connection member and the second external connection member can be connected.
For example, when the flexible circuit board 21 is applied to a display panel, an integrated chip located in a non-display area of the display panel may be bonded through the plurality of first bonding terminals 2111 of the first branch 211 of the flexible circuit board 21, and a printed circuit board may be bonded through the plurality of second bonding terminals 2121 of the second branch 212 of the flexible circuit board 21, so that the printed circuit board of the display panel is connected to the integrated chip, and display luminescence of the display panel is controlled. Since the plurality of first bonding terminals 2111 of the first branch 211 of the flexible circuit board 21 and the plurality of second bonding terminals 2121 of the second branch 212 are respectively located at the first face 2101 and the second face 2102 of the flexible circuit board 21, i.e., the plurality of first bonding terminals 2111 and the plurality of second bonding terminals 2121 are located on different branches and different faces of the flexible circuit board 21, when the integrated chip is bonded at the plurality of first bonding terminals 2111 of the first branch 211 and the printed circuit board is bonded at the plurality of second bonding terminals 2121 of the second branch 212, the distance between the first branch 211 and the second branch 212 may be controlled by the connection 213, for example, the distance of the connection 213 in the X direction may be increased, and the second branch 212 is disposed at a side close to the center position of the display panel in the X direction, so that the printed circuit board bonded by the plurality of second bonding terminals 2121 of the second branch 212 is reduced in the X direction, therefore, other components can be arranged on two sides of the printed circuit board, for example, a rotating shaft between a display screen of a notebook computer and a keyboard can be arranged on two sides of the printed circuit board with smaller X-direction size instead of the lower side of the printed circuit board, so that the assembly difficulty of the display panel is favorably reduced, and the frame area of the display panel is reduced. In addition, after the integrated chip is bound by a plurality of first binding terminals 2111 of the first branch 211 of the first surface 2101 of the flexible circuit board 21, the first surface 2101 of the flexible circuit board 21 is opposite to the integrated chip, the second surface 2102 of the flexible circuit board 21 departing from the integrated chip can be directly exposed, a display panel does not need to be turned over at the moment, a plurality of second binding terminals 2121 of the second branch 212 of the second surface 2102 of the flexible circuit board 21 are directly bound on the printed circuit board, thereby the binding mode can be simplified, the damage to the display panel caused by the turning is avoided, and the yield of products is improved.
Optionally, the at least one first branch and the at least one second branch of the flexible circuit board are located on the same side of the connection portion. As shown in fig. 2 and 3, the first branch 211 and the second branch 212 of the flexible circuit board 21 are located on the same side of the connection portion 213 and are connected together by the connection portion 213.
Illustratively, when the flexible circuit board 21 is used to bond the ic and the pcb of the display panel, after the first bonding terminals 2111 of the first branch 211 are bonded to the ic, the second branch 212 may be bent along the Y direction and then bonded to the pcb directly using the second bonding terminals 2121 of the second branch 212, without rewinding the wires, which may cause poor contact between the wires and affect the display effect of the display panel. Meanwhile, when the first branch 211 and the second branch 212 of the flexible circuit board 21 are located at the same side of the connection portion 213, the size of the flexible circuit board 21 in the Y direction may be reduced, so that the frame area of the display panel may be further reduced, and the plurality of second bonding terminals 2121 passing through the second branch 212 are bonded to the printed circuit board after being bent in the Y direction, instead of being directly folded back to the back of the display panel, so that the influence of static electricity generated by the display device of the display panel on the printed circuit board may be prevented.
Optionally, the length of the first branch of the flexible circuit board is smaller than that of the second branch; wherein the length of the first branch refers to the length of the first branch in the direction along which the first branch extends out of the connecting part; the length of the second branch refers to the length of the second branch in the direction in which the second branch protrudes out of the connection.
Illustratively, with continued reference to fig. 2 and 3, the length of the first branch 211 is the length L1 of the first branch protruding from the connection 213 in the Y direction, and the length of the second branch 212 is the length L2 of the second branch protruding from the connection 213 in the Y direction. The flexible circuit board 21 can be used for binding the integrated chip and the printed circuit board of the display panel, the length L1 of the first branch 211 is less than the length of the second branch 212, after a plurality of first binding terminals 2111 and the integrated chip of the first branch 211 are bound, the second branch 212 is bent along the Y direction and then directly bound with the printed circuit board through a plurality of second binding terminals 2121, the integrated chip can be bound at the first binding terminals 2111 of the first branch 211, the display panel does not need to be turned over, the printed circuit board can be bound by the second binding terminals 2121 of the second branch 212, thereby the binding mode can be simplified, the damage to the display panel caused by turning over is avoided, and the yield of the product is improved.
Alternatively, the flexible circuit board may include at least two first branches and one second branch, and the second branch is located between two adjacent first branches.
For example, fig. 4 is a schematic top view structure diagram of a first surface of another flexible circuit board provided in the embodiment of the present invention, and fig. 5 is a schematic top view structure diagram of a second surface of another flexible circuit board provided in the embodiment of the present invention. Referring to fig. 4 and 5, the flexible circuit board 21 includes two first branches 211 and one second branch 212, and the second branch 212 is located between the two first branches 211, thereby enabling a component bonded through the plurality of second bonding terminals 2121 of the second branch 212 to have a small size in the X direction. For example, when the first branch 211 is used to bond the ic on the display panel, and the second branch 212 is used to bond the pcb of the display panel, because the second branch 212 is located between the two first branches 211, the length of the pcb in the X direction can be smaller than the distance between the two ics with the farthest distance, so that the pcb of the display panel has a smaller size in the X direction, i.e., the pcb and the ic can be connected, and other components can be disposed on two sides of the pcb, instead of the side of the pcb away from the ics, which is beneficial to reducing the frame area of the display panel.
Optionally, the flexible circuit board may further include at least two first branches and one second branch; the at least two first branches are sequentially arranged along the extending direction of the connecting part, and the second branch is positioned at one side of the first branch at the head part or the tail part of the arrangement, which is far away from other first branches.
For example, fig. 6 is a schematic top view structure diagram of a first surface of another flexible circuit board provided in the embodiment of the present invention, and fig. 7 is a schematic top view structure diagram of a second surface of another flexible circuit board provided in the embodiment of the present invention. The flexible circuit board 21 includes two first branches 211 and one second branch 212, the two first branches 211 are sequentially arranged along the X direction in which the connection portion 213 extends, and the second branch 212 is located at the rightmost side of the two first branches 211, or the second branch 212 may be located at the leftmost side of the two first branches 211. This allows the member bonded by second bonding terminals 2121 of second branch 212 to have a small size in the X direction. For example, when the integrated chip on the display panel is bonded through the plurality of first bonding terminals 2111 of the first branch 211, and the printed circuit board of the display panel is bonded through the plurality of second bonding terminals 2121 of the second branch 212, the integrated chip on the right side may be bonded through the first branch 211 of the flexible circuit board 21 having the second branch 212 positioned on the leftmost side of the two first branches 211, and the integrated chip on the left side may be bonded through the first branch of the flexible circuit board 21 having the second branch 212 positioned on the rightmost side of the two first branches 211, such that the second branches 212 of the flexible circuit boards 21 are close to each other, and when the printed circuit board is bonded through the second branches 21 close to each other, the printed circuit board of the display panel may have a small size in the X direction, and connection with the integrated chip through the printed circuit board may be achieved, and other components may be disposed on both sides of the printed circuit board, and one side of the non-flexible circuit board, which is far away from the integrated chip, is provided with other components, so that the reduction of the frame area of the display panel is facilitated.
The printed circuit board of the display panel can have a smaller size in the X direction to realize the connection with the integrated chip through the flexible circuit board 21, thereby being beneficial to reducing the frame area of the display panel.
It should be noted that fig. 4, fig. 5, fig. 6, and fig. 7 are only exemplary drawings of the present embodiment, the flexible circuit board of the present embodiment may further include 3 to n first branches, where n is an integer greater than or equal to 3, and the second branch of the flexible circuit board may be located between any two adjacent first branches, that is, the size of the component bonded by the second bonding terminals of the second branch in the X direction may be reduced. Also, for fig. 6 and 7, the second branch may also be located at the leftmost side of the first branch. The technical principle is similar to the above example, and those skilled in the art can think of the above example scheme description, and the description is omitted here.
The embodiment of the invention also provides a display panel, and fig. 8 is a schematic structural diagram of the display panel provided by the embodiment of the invention. As shown in fig. 8, the display panel 20 provided in the embodiment of the present invention includes a flexible circuit board 21 provided in the embodiment of the present invention. In the display panel 20 provided by the embodiment of the present invention, the flexible circuit board 21 provided by the embodiment of the present invention bonds components of the display panel 21.
Illustratively, the display panel 20 is bonded to an integrated chip (not shown) of the display panel 20 by using a plurality of first bonding terminals of a first branch of the flexible circuit board 21, and a plurality of second bonding terminals of a second branch of the flexible circuit board 21 are bonded to a printed circuit board (not shown). And the second branch in the flexible circuit board 21 is arranged at one side of the first branch, which is away from the edge position of the display panel, so that the size of the printed circuit board can be reduced in the direction along which the integrated chips are arranged, and other components, such as a roller connecting the display panel 20 and a keyboard in a notebook computer, can be arranged at two sides of the printed circuit board, which is beneficial to reducing the assembly difficulty of the display panel 20 and the size of the frame of the display panel 20. In addition, in the flexible circuit board 21 provided in the embodiment of the present invention, the plurality of first bonding terminals of the first branch and the plurality of second bonding terminals of the second branch respectively bond different components of the display panel 20, and the first bonding terminals and the second bonding terminals of the flexible circuit board 21 are disposed on different surfaces of the flexible circuit board 21, so that after the plurality of first bonding terminals of the first branch of the flexible circuit board 21 bond the integrated chip of the display panel 20, the printed circuit board of the display panel 20 can be bonded by using the plurality of second bonding terminals of the second branch of the flexible circuit board 21 without turning over the display panel 20, thereby simplifying a bonding manner, avoiding damage to the display panel 20 due to turning over, and improving yield of products.
Alternatively, with continued reference to FIG. 8, the display panel 20 has a display area 2201 and a non-display area 2202 surrounding the display area. The display panel 20 includes a display substrate 22, a plurality of integrated chips (not shown), and a printed circuit board (not shown). The display substrate 22 has a display area 2201 and a non-display area 2202 corresponding to the display panel 20, a first bonding end of each of the integrated chips is bonded to the non-display area 2202 of the display substrate 22, a first bonding terminal of a first branch of the flexible circuit board 21 is bonded to a second end of one of the integrated chips, and after the second branch of the flexible circuit board 21 and the connecting portion bend away from one side of the integrated chip from the display substrate 22, a second bonding terminal of a second branch of the flexible circuit board 21 is bonded to the printed circuit board.
For example, fig. 9 is a schematic structural diagram of a display panel to which an FPC is not bonded according to an embodiment of the present invention. As shown in fig. 9, the display panel 20 of the present embodiment includes four integrated chips 23, and the first bonding ends of the four integrated chips 23 are bonded to the non-display region 2202 on the bottom side 221 of the display substrate 22 and are uniformly distributed on the bottom side 221. The first bonding terminals of the first branches of the four flexible circuit boards 21 are bonded to the second bonding terminals of the four integrated chips 23, respectively. Fig. 10 is a schematic structural diagram of a display panel bonding the rear and back surfaces of an FPC according to an embodiment of the present invention, and fig. 11 is a schematic structural diagram of a display panel bonding the rear and front surfaces of an FPC according to an embodiment of the present invention. After the first bonding terminal of the first branch of the flexible circuit board 21 is bonded with the second bonding terminal of the integrated chip 23, the second bonding terminal of the second branch of the flexible circuit board is close to the middle position of the display panel 20, and then the second branch of the flexible circuit board 21 and the connecting part are bent towards one side of the display substrate 22 away from the integrated chip 23. If the integrated chip 23 is located in the non-display region 2202 of the front surface 201 of the display substrate 22, the side away from the integrated chip 23 is the back surface 202 of the display substrate 22. The front surface 201 may be a display surface of the display panel 20, for example. The plurality of second bonding terminals of the second branch of the bent flexible circuit board 21 are bonded to the printed circuit board.
As shown in fig. 10 and 11, by disposing the second bonding terminal of the second branch of the flexible circuit board at a position close to the middle of the display panel 20 after the first bonding terminal of the first branch of the flexible circuit board 21 is bonded to the second bonding end of the integrated chip 23, the length L3 of the printed circuit board 24 bonded by the second bonding terminal of the second branch of the flexible circuit board 21 in the X direction is smaller than the size of the four integrated chips 23 in the X direction of the bottom side 221, so that the size of the printed circuit board 24 in the X direction is reduced, whereby other components can be disposed on both sides (241 side and 242 side of the printed circuit board 24 shown in the figure) of the printed circuit board 24 without increasing the frame area of the display panel 20. Simultaneously, buckle the back with the second branch and the connecting portion that flexible circuit board 21 is crooked back with printed circuit board 24 nation with display substrate 22, can be behind the first nation terminal nation integrated chip 23 of the first branch of flexible circuit board 21, need not upset display panel 20, can adopt flexible circuit board 21's the second nation terminal nation printed circuit board 24 of the second branch, thereby can simplify nation's mode, avoid the damage because of the upset causes display panel 20, improve the yield of product.
Optionally, the flexible circuit board of the display panel includes a plurality of flexible circuit boards; each flexible circuit board comprises a first branch and a second branch; the second branches of at least two adjacent flexible circuit boards are arranged in close proximity.
Illustratively, as shown in fig. 10 and 11, the display panel 20 includes four integrated chips 23, and four flexible circuit boards 21 corresponding to the four integrated chips 23, the four flexible circuit boards 21 respectively include a first branch and a second branch, and the second branches of the two flexible circuit boards 21 corresponding to the two integrated chips 23 located in the middle are adjacently disposed.
It should be noted that the number of integrated chips in the display panel is related to the design and display parameters of the display panel, and fig. 9 to 11 are exemplary drawings of the embodiment of the present invention, and do not represent that the number of integrated chips of the display panel provided by the embodiment of the present invention may only be 4, and the number of integrated chips of the display panel may also be n, where n is an integer greater than 1.
Optionally, the display panel may include Y integrated chips, where Y is an even number and is an integer greater than 1; m flexible circuit boards, each flexible circuit board including N first branches and one second branch; m × N ═ Y; m is an integer greater than or equal to 1; n is an integer greater than 1; second ends of the N adjacent integrated chips are respectively bound with a plurality of first binding terminals of N first branches of the flexible circuit board; the second bonding terminal of the second branch of each flexible circuit board is bonded to the printed circuit board.
Fig. 12 is a schematic structural diagram illustrating another display panel bonded to the rear surface of an FPC according to an embodiment of the present invention. As shown in fig. 12, the display panel 20 includes four integrated chips 23, and two flexible circuit boards 21 for bonding the four integrated chips 23, where the flexible circuit board 21 includes two first branches and one second branch, and the second branch of the flexible circuit board 21 is located between the two first branches of the flexible circuit board 21, and the two first branches of the flexible circuit board 21 can be used for bonding two adjacent integrated chips, and the second branch of the flexible circuit board 21 is used for bonding the printed circuit board 24, so that the dimension L3 of the printed circuit board 24 is smaller than the distance L4 between the two integrated chips with the farthest distance in the X direction, and the dimensions of the bezel of the display panel and the dimension of the printed circuit board in the X direction can be reduced compared with the prior art of fig. 1.
Fig. 13 is a schematic structural diagram of another display panel bonded to the rear surface of an FPC according to an embodiment of the present invention. As shown in fig. 13, the display panel 20 includes six ics 23, and two flexible circuit boards 21 for bonding the six ics 23, the flexible circuit board 21 includes three first branches and one second branch, and the second branch of the flexible circuit board 21 is located between two adjacent first branches, at this time, the three first branches of the flexible circuit board 21 can be used for bonding the adjacent three ics, and the second branch of the flexible circuit board 21 is used for bonding the printed circuit board 24, so that the dimension L3 of the printed circuit board 24 is smaller than the distance L4 between two ics which are farthest from each other in the X direction, and the dimensions of the frame of the display panel and the dimension of the printed circuit board in the X direction can be reduced relative to the prior art of fig. 1.
Fig. 9 to 11 also show a case where the display panel includes an even number of integrated chips. At this time, the flexible circuit board 21 may include a first branch and a second branch, and fig. 12 and fig. 13 are only exemplary drawings of the embodiment of the present invention, and on this basis, when an even number of integrated chips of the display panel are met, the scheme for bonding by using the flexible circuit board provided by the embodiment of the present invention is adopted, and both of the schemes belong to the protection scope of the embodiment of the present invention, and are not described again.
Alternatively, the display panel may include Y integrated chips, where Y is an odd number and is an integer greater than 1. At this time, the display panel may include M flexible circuit boards, including M1A first flexible circuit board and M2A second flexible circuit board. The first flexible circuit board comprises N1A first branch and a second branch; the second flexible circuit board comprises N2A first branch and a second branch; wherein M is1*N1+M2*N2＝Y；M1+M2M; m is an integer greater than 1; m1And M2Are integers greater than or equal to 1; n is a radical of1And N2Are all integers greater than 1; adjacent N1The second end of each integrated chip is respectively connected with N of the first flexible circuit board1A plurality of first bond terminal bindings for a first branch; adjacent N2The second end of each integrated chip is respectively connected with N of the second flexible circuit board2A plurality of first bond terminal bindings for a first branch; the second bonding terminal of the second branch of each first flexible circuit board and the second bonding terminal of the second branch of each second flexible circuit board are bonded to the printed circuit board.
Fig. 14 is a schematic structural diagram illustrating a structure of another display panel bonded to the rear surface of an FPC according to an embodiment of the present invention. As shown in fig. 14, the display panel 20 includes five integrated chips 23, and two flexible circuit boards for bonding the five integrated chips 23, i.e., a first flexible circuit board 2011 and a second flexible circuit board 2012, the first flexible circuit board 2011 includes three first branches and one second branch, and the second branch of the first flexible circuit board 2011 is located between two adjacent first branches, the second flexible circuit board 2012 includes two first branches and one second branch, and the second branch of the second flexible circuit board 2012 is located between two first branches. Three first branches of first flexible circuit board 2011 may be used to bond three adjacent integrated chips 23, a second branch of first flexible circuit board 2011 may be used to bond printed circuit board 24, two first branches of second flexible circuit board 2012 may be used to bond two adjacent integrated chips 23, and a second branch of first flexible circuit board 2011 may be used to bond printed circuit board 24, and in the X direction, a dimension L3 of printed circuit board 24 is smaller than a distance L4 between two farthest integrated chips.
It should be noted that fig. 14 is only an exemplary diagram of the embodiment of the present invention, and on this basis, when the display panel is matched with an odd number of integrated chips, the scheme of using the flexible circuit board provided in the embodiment of the present invention for bonding all belongs to the protection scope of the embodiment of the present invention, and details are not described here.
Optionally, the display panel includes a plurality of flexible circuit boards; the plurality of flexible circuit boards include at least one fourth flexible circuit board and at least one fifth flexible circuit board; the fourth flexible circuit board comprises at least two first branches and one second branch; the fifth flexible circuit board includes a first branch and a second branch.
For example, fig. 15 is a schematic structural diagram of a display panel according to an embodiment of the present invention, where the display panel is bonded to the rear surface of an FPC. As shown in fig. 15, the display panel 20 includes three integrated chips 23, and two flexible circuit boards for bonding the three integrated chips 23, i.e., a fourth flexible circuit board 2014 and a fifth flexible circuit board 2015, the fourth flexible circuit board 2014 includes two first branches and one second branch, the fifth flexible circuit board 2015 includes one first branch and one second branch, and the second branch of the fifth flexible circuit board 2015 is located between the two first branches. Two first branches of a fifth flexible circuit board 2015 may be used to bond two adjacent integrated chips 23, a second branch of the fifth flexible circuit board 2015 may be used to bond printed circuit board 24, a first branch of a fourth flexible circuit board 2014 may be used to bond one integrated chip 23 near the edge of display panel 20, a second branch of the fourth flexible circuit board 2014 may be used to bond printed circuit board 24, and a second branch of the fourth flexible circuit board 2014 may be located at a side of the first branch of the fourth flexible circuit board 2014 away from the edge of display panel 20. In this way, the dimension L3 of the printed circuit board 24 in the X direction is smaller than the distance L4 between the two farthest integrated chips, which can reduce the size of the frame of the display panel and the printed circuit board in the X direction relative to the prior art of fig. 1.
Optionally, the display panel may further include at least one third flexible circuit board; a plurality of first binding terminals are arranged at the first end of the third flexible circuit board; a plurality of second binding terminals are arranged at the second end of the third flexible circuit board; a plurality of first binding terminals of the third flexible circuit board are bound with a second end of an integrated chip; the plurality of second binding terminals of the third flexible circuit board are bound with the printed circuit board.
For example, the third flexible circuit board may be a flexible circuit board commonly used at present, that is, the plurality of first bonding terminals and the plurality of second bonding terminals of the third flexible circuit board may be located on the same side of the third flexible circuit board. Fig. 16 is a schematic structural diagram of a display panel bonding a rear surface of an FPC according to yet another embodiment of the present invention. As shown in fig. 16, the display panel 20 includes two flexible circuit boards 21 provided in the embodiment of the present invention, the flexible circuit boards 21 include a first branch and a second branch, and the display panel 20 further includes two third flexible circuit boards 25. The first branches of the two flexible circuit boards 21 are respectively bonded to the two integrated chips 23 at the edge, the second branches of the two flexible circuit boards 21 are bonded to the printed circuit board 24, and the second branches of the two flexible circuit boards 21 are located at a side of the first branches away from the edge of the display panel 20. The first bonding terminals of the two third flexible circuit boards 25 are bonded to the two middle integrated chips 23, and the second bonding terminals of the two third flexible circuit boards 25 are bonded to the printed circuit board 24. In this way, the dimension L3 of the printed circuit board 24 in the X direction is smaller than the distance L4 between the two farthest integrated chips, which can reduce the size of the frame of the display panel and the printed circuit board in the X direction relative to the prior art of fig. 1.
Fig. 17 is a schematic structural diagram of a display panel bonded to a rear surface of an FPC according to yet another embodiment of the present invention. As shown in fig. 17, the display panel 20 includes two flexible circuit boards 21 provided in the embodiment of the present invention, the flexible circuit board 21 includes two first branches and one second branch, and the display panel 20 further includes a third flexible circuit board 25. The two first branches of the two flexible circuit boards 21 are respectively bonded to the two adjacent integrated chips 23, the second branches of the two flexible circuit boards 21 are bonded to the printed circuit board 24, and the second branches of the two flexible circuit boards 21 are located between the two first branches thereof. The first bonding terminal of the third flexible circuit board 25 is bonded to the middle integrated chip 23, and the second bonding terminal of the third flexible circuit board 25 is bonded to the printed circuit board 24. In this way, the dimension L3 of the printed circuit board 24 in the X direction is smaller than the distance L4 between the two farthest integrated chips, which can reduce the size of the frame of the display panel and the printed circuit board in the X direction relative to the prior art of fig. 1.
The embodiment of the invention also provides a display device, which can be a notebook computer and the like. Fig. 18 is a schematic structural diagram of a display device according to an embodiment of the present invention. As shown in fig. 18, the display device 200 includes the display panel 20 according to the embodiment of the present invention. The display panel 20 provided by the embodiment of the present invention bonds other components of the display panel 20 through the flexible circuit board provided by the embodiment of the present invention, so that the size of, for example, a printed circuit board in the display panel 20 can be reduced, thereby reducing the frame area of the display panel 20. Meanwhile, it is also possible to prevent signal interference generated by the printed circuit board being superimposed with other components of the display panel 20 in a direction perpendicular to the display panel 20.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A flexible circuit board for bonding an integrated chip and a printed circuit board located in a non-display area of a display panel, comprising:
at least two first branches, at least one second branch, and a connection connecting the at least two first branches and the at least one second branch;
wherein, one end of the first branch far away from the connecting part is provided with a plurality of first bonding terminals; one end of the second branch, which is far away from the connecting part, is provided with a plurality of second bonding terminals;
the flexible circuit board comprises a first face and a second face opposite to the first face; the first plurality of bond terminals are located on the first face and the second plurality of bond terminals are located on the second face; the at least two first branches and the at least one second branch are positioned on the same side of the connecting part;
wherein the second branch is located between two adjacent first branches; or, the at least two first branches are sequentially arranged along the extending direction of the connecting part, and the second branch is positioned at one side of the first branch far away from other first branches at the head part or the tail part of the arrangement;
the first branch is used for binding an integrated chip of the display panel, and the second branch is used for binding a printed circuit board of the display panel.
2. The flexible circuit board of claim 1, wherein the length of the first branch is less than the length of the second branch;
wherein the length of the first branch refers to the length of the first branch in a direction along which the first branch extends out of the connection; the length of the second branch refers to the length of the second branch in the direction in which the second branch protrudes out of the connection portion.
3. A display panel, comprising: at least one flexible circuit board according to any one of claims 1 to 2.
4. The display panel according to claim 3, comprising: a display area and a non-display area surrounding the display area;
the display panel includes:
a display substrate including a display area and a non-display area corresponding to the display panel;
a plurality of integrated chips; a first end of the integrated chip is bonded to a non-display area of the display substrate, and a first bonding terminal of a first branch of the flexible circuit board is bonded to a second end of the integrated chip;
and a printed circuit board; the second branch of the flexible circuit board and the connecting part are bent to one side of the display substrate, which deviates from the integrated chip, and the second bonding terminal of the second branch is bonded with the printed circuit board.
5. The display panel according to claim 4, comprising:
y integrated chips, wherein Y is an even number and is an integer greater than 1;
m flexible circuit boards, each flexible circuit board comprising N first branches and one second branch; m × N ═ Y; m is an integer greater than or equal to 1; n is an integer greater than 1;
second ends of the N adjacent integrated chips are respectively bound with a plurality of first binding terminals of the N first branches of the flexible circuit board;
the second bonding terminal of the second branch of each flexible circuit board is bonded to the printed circuit board.
6. The display panel according to claim 4, comprising:
y integrated chips, wherein Y is an odd integer greater than 1;
m flexible circuit boards including M1A first flexible circuit board and M2A second flexible circuit board;
the first flexible circuit board comprises N1A first branch and a second branch; the second flexible circuit board comprises N2A first branch and a second branch; m1*N1+M2*N2＝Y；M1+M2M; m is an integer greater than 1; m1And M2Are integers greater than or equal to 1; n is a radical of1And N2Are all integers greater than 1;
adjacent N1The second end of each integrated chip is respectively connected with the N of the first flexible circuit board1A plurality of first bond terminal bindings for the first branch; adjacent N2The second end of each integrated chip is respectively connected with the N of the second flexible circuit board2A plurality of first bond terminal bindings for the first branch;
the second bonding terminal of the second branch of each of the first flexible circuit boards and the second bonding terminal of the second branch of each of the second flexible circuit boards are bonded to the printed circuit board.
7. The display panel according to claim 4, further comprising at least one third flexible circuit board; a plurality of first binding terminals are arranged at the first end of the third flexible circuit board; a second end of the third flexible circuit board is provided with a plurality of second binding terminals;
a plurality of first binding terminals of the third flexible circuit board are bound with a second end of the integrated chip; the plurality of second binding terminals of the third flexible circuit board are bound to the printed circuit board.
8. The display panel according to claim 4, comprising a plurality of the flexible circuit boards; the plurality of flexible circuit boards comprises at least one fourth flexible circuit board and at least one fifth flexible circuit board;
the fourth flexible circuit board comprises at least two first branches and one second branch; the fifth flexible circuit board includes a first branch and a second branch.
9. The display panel according to claim 4, wherein the flexible circuit board comprises a plurality of the flexible circuit boards; each of the flexible circuit boards comprises a first branch and a second branch; at least two second branches adjacent to the flexible circuit board are arranged adjacently.
10. A display device, comprising: the display panel according to any one of claims 3 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811613668.8A CN109496067B (en) | 2018-12-27 | 2018-12-27 | Flexible circuit board, display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811613668.8A CN109496067B (en) | 2018-12-27 | 2018-12-27 | Flexible circuit board, display panel and display device |
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| CN109496067B true CN109496067B (en) | 2020-09-15 |
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| CN109994042B (en) * | 2019-04-11 | 2024-05-03 | 武汉华星光电技术有限公司 | Driving chip and display panel |
| CN110636688B (en) * | 2019-08-21 | 2020-10-16 | 武汉华星光电半导体显示技术有限公司 | Flexible display device |
| WO2023155164A1 (en) | 2022-02-18 | 2023-08-24 | 京东方科技集团股份有限公司 | Display apparatus and driving method therefor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1039788B1 (en) * | 1999-03-26 | 2006-04-19 | Seiko Epson Corporation | Flexible printed wiring board, electro-optical device, and electronic equipment |
| CN101236311B (en) * | 2008-02-14 | 2011-07-27 | 友达光电股份有限公司 | LCD device sensing structure |
| TWI525378B (en) * | 2013-12-06 | 2016-03-11 | 友達光電股份有限公司 | Active device array substrate and display panel |
| CN204516283U (en) * | 2014-12-31 | 2015-07-29 | 昆山维信诺科技有限公司 | Display screen body, flexible PCB and display module |
| US20190332198A1 (en) * | 2016-12-26 | 2019-10-31 | Shenzhen Royole Technologies Co., Ltd. | Display device, electronic device and method of manufacturing display device |
| CN206946450U (en) * | 2017-04-10 | 2018-01-30 | 昆山龙腾光电有限公司 | Touch control display apparatus |
| CN107484328B (en) * | 2017-08-30 | 2019-09-24 | 厦门天马微电子有限公司 | A kind of display device |
| CN208172458U (en) * | 2018-05-31 | 2018-11-30 | 北京京东方技术开发有限公司 | display device and flexible circuit board |
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