CN112162662A - Display panel and display device - Google Patents
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- CN112162662A CN112162662A CN202011165116.2A CN202011165116A CN112162662A CN 112162662 A CN112162662 A CN 112162662A CN 202011165116 A CN202011165116 A CN 202011165116A CN 112162662 A CN112162662 A CN 112162662A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
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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
- G09F9/33—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 being semiconductor devices, e.g. diodes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/131—Interconnections, e.g. wiring lines or terminals
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention provides a display panel and a display device. The display panel comprises a flexible substrate, a display functional layer and a touch functional layer; the flexible substrate comprises at least one first branch structure and a plurality of second branch structures positioned on two sides of the first branch structure in the non-display area, the first branch structure corresponds to the fan-out area and the binding area, and the end parts of the second branch structures correspond to the binding area; the display signal line of the display function layer is arranged on the first branch structure; the touch signal line of the touch functional layer is arranged on the second branch structure. According to the invention, the flexible substrate is provided with the plurality of branch structures at one side of the fan-out area, so that bending with different curvature radiuses can be realized, single-layer manufacturing of a multi-layer flexible circuit assembly can also be realized, and the manufacturing difficulty and the cost are reduced.
Description
Technical Field
The invention relates to the field of display, in particular to a display panel and a display device.
Background
With the rapid development of intelligence towards the direction of a full-screen, a flexible Active Matrix Organic Light Emitting Diode (AMOLED) display screen carried by a mobile phone complete machine is required to be developed towards the directions of lightness, thinness and a narrow frame.
The flexible AMOLED display screen includes a display region and a non-display region, and typically pad lines (Fanout traces) are disposed in the non-display region, and the pad lines are typically formed at lower borders of the AMOLED scan lines and the data lines. The scan lines and the data lines are connected to a driving circuit unit, which is typically an integrated circuit chip (IC), through pad lines.
The non-display area forms a frame of the display screen, so that the larger the area occupied by the pad lines positioned at the periphery of the display area is, the larger the frame of the display screen is; as the bezel area of the display screen increases, the screen occupancy decreases. Correspondingly, under the condition that the size of the whole mobile phone is fixed, the area of the area capable of being displayed is reduced.
At present, a flexible AMOLED (active matrix/organic light emitting diode) usually adopts a bending process, and a pad wire area located in a non-display area is bent to the back of a display screen along with a flexible substrate of the flexible AMOLED, so that the size of a frame of the display screen is reduced. At present, a pad line area at the lower frame of the AMOLED is called a fan-out area, and is converged to the middle position of the display screen at the lower frame of the display screen to form a section of integral wiring, and then the integral wiring is bent to the back of the display screen.
As shown in fig. 1, which is a schematic structural diagram of an embedded (Oncell) AMOLED touch display screen in the market at present, in fig. 1, a flexible substrate 91, a device layer (not shown), a display signal line layer 92, a touch signal line layer 93, and a binding layer 94 are sequentially disposed on an AMOLED touch display screen 90 from bottom to top. The flexible substrate 91 is divided into a display area 910 and a non-display area 920, the non-display area 920 comprises a fan-out area 921 and a binding area 922, the touch signal line layer 93 is located above the display signal line layer 92, and the touch signal line layer 93 is integrated on the AMOLED display screen; the metal traces connecting the touch electrodes above the display area 910 extend along the length direction of the Pad lines of the display area 910, the fan-out area 921 at the lower boundary (Down Border) of the display area 910 converges with the display signal lines and the power traces, and extends to the bonding area 922, and then the touch signal pads (Pad) and the display signal pads are electrically connected with the same complete flexible circuit assembly (FPCA) of the bonding layer 94 through the Active Carbon Fiber (ACF) conductive adhesive.
When the mobile terminal complete machine structure of the display module is carried, in order to reduce the width of the lower boundary of the display Area, a Bending Area (Bending Area) is arranged at the lower boundary of the display Area on the flexible substrate; and the displayed signal lines and the touch signal lines are bent to the back of the AMOLED display screen together.
The touch signal line and the display signal line are positioned on the same complete flexible substrate, only one FPCA is connected with the binding area, and the display FPCA and the touch FPCA are combined into a whole and integrated on the same FPCA; in order to avoid mutual interference of signals between touch control and display, the FPCA carrying the flexible AMOLED touch display screen at present is usually a multilayer board, such as a 6-layer board, including a device layer, a touch signal line layer, a display signal line layer, a binding layer, and the like; the display signal layer is isolated from the touch signal layer through a Ground (GND) layer so as to avoid mutual interference between the touch signal and the display signal.
However, the multi-Layer FPCA with more than three layers has much higher manufacturing difficulty and cost than single-Layer (One Layer) or Two-Layer (Two Layer) FPCA.
Disclosure of Invention
The present invention provides a display panel and a display device, which are used to solve the technical problems of difficulty in manufacturing a multi-layer flexible circuit assembly (FPCA) having more than three layers on a complete flexible substrate and high cost.
In order to solve the above problems, the present invention provides a display panel, which is provided with a display area and a non-display area, wherein the non-display area is provided with a fan-out area and a binding area on one side of the display area, and comprises a flexible substrate, a display function layer and a touch function layer; specifically, the flexible substrate is provided with the display area and the non-display area, the non-display area comprises at least one first branch structure and a plurality of second branch structures located on two sides of the first branch structure, the first branch structure corresponds to the fan-out area and the bonding area, and the end portions of the second branch structures correspond to the bonding area; the display function layer is arranged on the flexible substrate, is positioned in the display area and is provided with a display signal line; the display signal line extends from the display area to the fan-out area and the binding area of the non-display area and is arranged on the first branch structure; the touch functional layer is arranged on the display functional layer, is positioned in the display area and is provided with a touch signal line; the touch signal line extends from the display area to the binding area of the non-display area and is arranged on the second branch structure.
Furthermore, the first branch structure and the second branch structure are strip-shaped, and the flexible substrate is T-shaped, F-shaped or comb-shaped on one side of the binding region.
Further, the first branch structure and the second branch structure have different bending radiuses when bending towards the back of the display panel.
Further, the display signal line and the touch signal line are combined into one layer in the binding area.
Furthermore, a driving circuit unit is arranged in the binding area, and the driving circuit unit is respectively and electrically connected with the display signal line and the touch signal line.
Further, the display panel further includes: and the flexible circuit board is correspondingly bound and connected with the display signal line on the first branch structure and the touch signal line on the second branch structure in the binding area.
Furthermore, the flexible circuit board is provided with a wiring connecting part at one side far away from the binding area.
Further, the flexible circuit board includes a first sub flexible circuit board and a second sub flexible circuit board; the first sub flexible circuit board is arranged corresponding to the first branch structure; and the second sub flexible circuit board is arranged corresponding to the second branch structure.
Further, the first sub flexible circuit board and the second branch structure are arranged separately from each other; or the first sub flexible circuit board and the second branch structure are connected into an integral structure at one side far away from the binding region.
The invention also provides a display device comprising the display panel.
The invention has the beneficial effects that: the utility model provides a display panel and display device, through setting up flexible substrate into a plurality of branch structures in fan-out district one side, can realize different curvature radius's buckling, the branch that shows the signal line and locate the middle part is structural, but touch signal line locates on the branch structure that is located both sides to but realize multilayer flexible circuit subassembly (FPCA) single-deck mode preparation, reduced the preparation degree of difficulty big and cost. Furthermore, the flexible circuit board which is arranged corresponding to the flexible substrate in the binding area can be a plurality of sub-flexible circuit boards which are separated from each other, and bending with different curvature radiuses can be realized; or the flexible circuit board which is correspondingly arranged with the flexible substrate in the binding area is of an integrated structure, and the display signal line layer and the touch signal line layer are combined together to form an integral flexible circuit assembly.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a conventional embedded AMOLED touch display screen;
fig. 2 is a schematic plan view of a display panel according to embodiment 1 of the present invention;
fig. 3 is a schematic cross-sectional view of a display panel according to embodiment 1 of the present invention;
fig. 4 is a schematic view of a bending structure of the flexible substrate in embodiment 1 of the present invention;
fig. 5 is a schematic structural diagram illustrating a structure in which the display signal line and the touch signal line are combined into one layer in the bonding region in embodiment 1 of the present invention;
fig. 6 is a schematic structural diagram of the display panel in embodiment 2 of the present invention.
The components in FIG. 1 are identified as follows:
90. an AMOLED touch display screen 91, a flexible substrate 92, a display signal line layer,
93. touch signal line layer, 94, binding layer, 910, display area,
920. non-display area, 921, fan-out area, 922, binding area.
The components in fig. 2-6 are identified as follows:
1. a flexible substrate, 2, a display functional layer, 3, a touch functional layer,
4. a driving circuit unit 5, a flexible circuit board 6, a wiring connection part,
11. a first branch structure 12, a second branch structure 21, a display signal line,
31. a touch signal line 51, a first sub flexible circuit board 52, a second sub flexible circuit board,
100. a display panel, 110, a display area, 120, a non-display area,
121. fan-out area, 122, bonding area.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application.
Example 1
Referring to fig. 2, 3 and 4, an embodiment 1 of the invention provides a display panel 100, which includes a display area 110 and a non-display area 120, where the non-display area 120 includes a fan-out area 121 and a binding area 122 on one side of the display area 110, and includes a flexible substrate 1, a display functional layer 2 and a touch functional layer 3, which are stacked.
Specifically, the flexible substrate 1 may be formed of a polymer material such as Polyimide (PI), Polycarbonate (PC), Polyethersulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), Polyarylate (PAR), or glass Fiber Reinforced Plastic (FRP). The flexible substrate may be transparent, translucent, or opaque. The flexible substrate 1 enables the touch display panel 100 to implement flexible display such as bending, curling, and folding. The material of the flexible substrate 1 is preferably polyimide. The flexible substrate 1 is provided with the display area 110 and the non-display area 120, the non-display area 120 includes at least one first branch structure 11 and a plurality of second branch structures 12 located at two sides of the first branch structure 11, the first branch structure 11 corresponds to the fan-out area 121 and the bonding area 122, and ends of the second branch structures 12 correspond to the bonding area 122.
As shown in fig. 5, the display function layer 2 is disposed on the flexible substrate 1 and in the display region 110, and has a structure including a display signal line 21, a driving transistor (not shown), and the like; the display signal line 21 extends from the display area 110 to the fan-out area 121 and the bonding area 122 of the non-display area 120, and is disposed on the first branch structure 11. The touch functional layer 3 is disposed on the display functional layer 2 and located in the display area 110, and is provided with a touch signal line 31. The touch signal line 31 extends from the display area 110 to the bonding area 122 of the non-display area 120, and is disposed on the second branch structure 12. Thus, the display signal lines 21 and the touch signal lines 31 are independently located on at least two different branch structures of the flexible substrate 1.
As shown in fig. 2, 3, and 4, in the present embodiment, one first branch structure 11 and two second branch structures 12 are taken as an example for explanation, that is, the flexible substrate 1 is divided into a middle and two left and right three-stage branch structures. In this embodiment, the first branch structure 11 and the second branch structure 12 are in the shape of a strip, and the flexible substrate 1 is in the shape of a T, an F, or a comb on one side of the binding region 122.
The three-segment branch structure can reduce the width of the flexible substrate 1 on one side of the fan-out area 121, and the fan-out area 121 is also a bending area, and the display signal line 21 and the touch signal line 31 are bent together with the flexible substrate 1. Compared with the traditional integral flexible substrate 1 with larger width as a bending area, the bending width is reduced, and the bending stress of each flexible substrate 1 branch structure is reduced, so that the risk of metal wiring breakage on the flexible substrate 1 is effectively reduced.
As shown in fig. 4, in this embodiment, the first branch structure 11 and the second branch structure 12 have different bending radii when bending to the back of the display panel 100. After bending, the first branch structure 11 and the two second branch structures 12 corresponding to different flexible substrates 1 may have different bending radii, which are R1, R2, and R3, respectively. And because the flexible substrate 1 has a plurality of independent branch structures, the bending radiuses R1, R2 and R3 after bending are all independent, the structural flexibility and the design flexibility of the back surface of the display panel 100 are increased.
As shown in fig. 5, in the present embodiment, the extending directions of the display signal line 21 and the touch signal line 31 are the same. The display signal line 21 and the touch signal line 31 are combined into one layer in the binding region 122, so that a single-layer wiring structure is realized, single-layer manufacturing is facilitated, and manufacturing difficulty and cost are reduced.
In this embodiment, a driving circuit unit 4 is disposed in the bonding region 122, the driving circuit unit 4 is usually an integrated circuit chip (IC), and the driving circuit unit 4 is electrically connected to the display signal line 21 and the touch signal line 31 respectively. A pad is disposed in the fan-out area 121, one end of the pad is connected to the display signal line 21 and the touch signal line 31 of the display area 110, and the other end of the pad is connected to the driving circuit unit 4 of the bonding area. The driving circuit unit 4 is configured to transmit a display signal and a touch signal through the display signal line 21 and the touch signal line 31, respectively, and is configured to implement a display function of the display functional layer 2 or a touch function of the touch functional layer 3, and the touch functional layer 3 and the display functional layer 2 are integrally embedded, so that the display function and the touch function can be simultaneously implemented.
In this embodiment, the display panel 100 further includes a flexible circuit board 5, and the flexible circuit board 5 is correspondingly bound and connected to the display signal line 21 on the first branch structure 11 and the touch signal line 31 on the second branch structure 12 in the binding region 122. Specifically, the flexible circuit board 5 is provided with a trace pad, and the display signal line 21 and the touch signal line 31 are electrically connected to the trace pad in the bonding area 122 through an Active Carbon Fiber (ACF) conductive adhesive. The display signal line 21 and the touch signal line 31 are located on the same integral flexible substrate 1.
In this embodiment, the flexible circuit board 5 is provided with a routing connection portion 6 on a side away from the bonding region 122, and is connected to other external circuits. The flexible circuit board 5 and the trace connection portion 6 are collectively referred to as a flexible circuit assembly (FPCA), and can be separately manufactured and then connected to the display panel 100 through a bonding process.
In this embodiment, the flexible circuit board 5 includes a first sub flexible circuit board 51 and a second sub flexible circuit board 52; the first sub flexible circuit board 51 is arranged corresponding to the first branch structure 11; the second sub flexible circuit board 52 is disposed corresponding to the second branch structure 12.
As shown in fig. 2, in the present embodiment, the first sub flexible circuit board 51 and the second branch structure 12 are disposed separately from each other. In this way, the trace connection portions 6 are disposed at the end portions of the first sub flexible circuit board 51 and the second sub flexible circuit board 52.
Example 2
Most of the technical features in embodiment 2 are similar to those in embodiment 1, and reference may be made to the structure shown in fig. 2 to 6, which is different from embodiment 1 in that the first sub flexible circuit board 51 and the second branch structure 12 are connected to form a unitary structure on the side away from the bonding region 122, instead of the first sub flexible circuit board 51 and the second branch structure 12 being disposed separately from each other, as described below.
Referring to fig. 3, 4, 5, and 6, an embodiment 2 of the present invention provides a display panel 100, which includes a display area 110 and a non-display area 120, where the non-display area 120 includes a fan-out area 121 and a bonding area 122 on one side of the display area 110, and includes a flexible substrate 1, a display functional layer 2, and a touch functional layer 3, which are stacked.
Specifically, the flexible substrate 1 may be formed of a polymer material such as Polyimide (PI), Polycarbonate (PC), Polyethersulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), Polyarylate (PAR), or glass Fiber Reinforced Plastic (FRP). The flexible substrate may be transparent, translucent, or opaque. The flexible substrate 1 enables the touch display panel 100 to implement flexible display such as bending, curling, and folding. The material of the flexible substrate 1 is preferably polyimide. The flexible substrate 1 is provided with the display area 110 and the non-display area 120, the non-display area 120 includes at least one first branch structure 11 and a plurality of second branch structures 12 located at two sides of the first branch structure 11, the first branch structure 11 corresponds to the fan-out area 121 and the bonding area 122, and ends of the second branch structures 12 correspond to the bonding area 122.
As shown in fig. 2 and 5, the display function layer 2 is disposed on the flexible substrate 1 and in the display region 110, and has a structure including a display signal line 21, a driving transistor (not shown), and the like; the display signal line 21 extends from the display area 110 to the fan-out area 121 and the bonding area 122 of the non-display area 120, and is disposed on the first branch structure 11. The touch functional layer 3 is disposed on the display functional layer 2 and located in the display area 110, and is provided with a touch signal line 31. The touch signal line 31 extends from the display area 110 to the bonding area 122 of the non-display area 120, and is disposed on the second branch structure 12. Thus, the display signal lines 21 and the touch signal lines 31 are independently located on at least two different branch structures of the flexible substrate 1.
As shown in fig. 3, 4, 5, and 6, in the present embodiment, one first branch structure 11 and two second branch structures 12 are taken as an example for explanation, that is, the flexible substrate 1 is divided into a three-stage branch structure having a middle portion and two left and right sides. In this embodiment, the first branch structure 11 and the second branch structure 12 are in the shape of a strip, and the flexible substrate 1 is in the shape of a T, an F, or a comb on one side of the binding region 122.
The three-segment branch structure can reduce the width of the flexible substrate 1 on one side of the fan-out area 121, and the fan-out area 121 is also a bending area, and the display signal line 21 and the touch signal line 31 are bent together with the flexible substrate 1. Compared with the traditional integral flexible substrate 1 with larger width as a bending area, the bending width is reduced, and the bending stress of each flexible substrate 1 branch structure is reduced, so that the risk of metal wiring breakage on the flexible substrate 1 is effectively reduced.
As shown in fig. 4, in this embodiment, the first branch structure 11 and the second branch structure 12 have different bending radii when bending to the back of the display panel 100. After bending, the first branch structure 11 and the two second branch structures 12 corresponding to different flexible substrates 1 may have different bending radii, which are R1, R2, and R3, respectively. And because the flexible substrate 1 has a plurality of independent branch structures, the bending radiuses R1, R2 and R3 after bending are all independent, the structural flexibility and the design flexibility of the back surface of the display panel 100 are increased.
As shown in fig. 5, in the present embodiment, the extending directions of the display signal line 21 and the touch signal line 31 are the same. The display signal line 21 and the touch signal line 31 are combined into one layer in the binding region 122, so that a single-layer wiring structure is realized, single-layer manufacturing is facilitated, and manufacturing difficulty and cost are reduced.
In this embodiment, a driving circuit unit 4 is disposed in the bonding region 122, the driving circuit unit 4 is usually an integrated circuit chip (IC), and the driving circuit unit 4 is electrically connected to the display signal line 21 and the touch signal line 31 respectively. A pad is disposed in the fan-out area 121, one end of the pad is connected to the display signal line 21 and the touch signal line 31 of the display area 110, and the other end of the pad is connected to the driving circuit unit 4 of the bonding area. The driving circuit unit 4 is configured to transmit a display signal and a touch signal through the display signal line 21 and the touch signal line 31, respectively, and is configured to implement a display function of the display functional layer 2 or a touch function of the touch functional layer 3, and the touch functional layer 3 and the display functional layer 2 are integrally embedded, so that the display function and the touch function can be simultaneously implemented.
In this embodiment, the display panel 100 further includes a flexible circuit board 5, and the flexible circuit board 5 is correspondingly bound and connected to the display signal line 21 on the first branch structure 11 and the touch signal line 31 on the second branch structure 12 in the binding region 122. Specifically, the flexible circuit board 5 is provided with a trace pad, and the display signal line 21 and the touch signal line 31 are electrically connected to the trace pad in the bonding area 122 through an Active Carbon Fiber (ACF) conductive adhesive. The display signal line 21 and the touch signal line 31 are located on the same integral flexible substrate 1.
In this embodiment, the flexible circuit board 5 is provided with a routing connection portion 6 on a side away from the bonding region 122, and is connected to other external circuits. The flexible circuit board 5 and the trace connection portion 6 are collectively referred to as a flexible circuit assembly (FPCA), and can be separately manufactured and then connected to the display panel 100 through a bonding process.
In this embodiment, the flexible circuit board 5 includes a first sub flexible circuit board 51 and a second sub flexible circuit board 52; the first sub flexible circuit board 51 is arranged corresponding to the first branch structure 11; the second sub flexible circuit board 52 is disposed corresponding to the second branch structure 12.
As shown in fig. 6, in this embodiment, the first sub flexible circuit board 51 and the second branch structure 12 are connected as an integral structure on a side away from the bonding area 122. Therefore, only one routing connecting portion 6 needs to be arranged on the side of the flexible circuit board 5 away from the bonding region 122, and the steps for manufacturing the routing connecting portion 6 can be reduced.
Based on the same inventive concept, the disclosed embodiments provide a display device including the display panel 100 provided by the above embodiments. The display device in the embodiments of the present disclosure may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.
The working principle of the display device provided in this embodiment is the same as that of the display panel 100, and the specific structural relationship and working principle refer to the display panel 100 embodiment, which is not described herein again.
The invention has the beneficial effects that: the utility model provides a display panel and display device, through setting up flexible substrate into a plurality of branch structures in fan-out district one side, can realize different curvature radius's buckling, the branch that shows the signal line and locate the middle part is structural, but touch signal line locates on the branch structure that is located both sides to but realize multilayer flexible circuit subassembly (FPCA) single-deck mode preparation, reduced the preparation degree of difficulty big and cost. Furthermore, the flexible circuit board which is arranged corresponding to the flexible substrate in the binding area can be a plurality of sub-flexible circuit boards which are separated from each other, and bending with different curvature radiuses can be realized; or the flexible circuit board which is correspondingly arranged with the flexible substrate in the binding area is of an integrated structure, and the display signal line layer and the touch signal line layer are combined together to form an integral flexible circuit assembly.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A display panel is provided with a display area and a non-display area, the non-display area is provided with a fan-out area and a binding area on one side of the display area, and the display panel is characterized by comprising:
the flexible substrate is provided with the display area and the non-display area, the non-display area comprises at least one first branch structure and a plurality of second branch structures positioned on two sides of the first branch structure, the first branch structure corresponds to the fan-out area and the binding area, and the end parts of the second branch structures correspond to the binding area;
the display function layer is arranged on the flexible substrate, is positioned in the display area and is provided with display signal lines; the display signal line extends from the display area to the fan-out area and the binding area of the non-display area and is arranged on the first branch structure; and
the touch control functional layer is arranged on the display functional layer, is positioned in the display area and is provided with a touch control signal line; the touch signal line extends from the display area to the binding area of the non-display area and is arranged on the second branch structure.
2. The display panel according to claim 1, wherein the first branch structure and the second branch structure are in a shape of a strip, and the flexible substrate is in a shape of a T, an F, or a comb on one side of the bonding region.
3. The display panel according to claim 1, wherein the first branch structure and the second branch structure have different bending radii when bending to the back of the display panel.
4. The display panel according to claim 1, wherein the display signal line and the touch signal line are combined into one layer in the bonding region.
5. The display panel according to claim 1, wherein a driving circuit unit is disposed in the bonding region, and the driving circuit unit is electrically connected to the display signal line and the touch signal line, respectively.
6. The display panel according to claim 1, further comprising:
and the flexible circuit board is correspondingly bound and connected with the display signal line on the first branch structure and the touch signal line on the second branch structure in the binding area.
7. The display panel according to claim 6, wherein the flexible circuit board is provided with a trace connection portion at a side away from the bonding area.
8. The display panel according to claim 6, wherein the flexible circuit board comprises:
the first sub flexible circuit board is arranged corresponding to the first branch structure; and
and the second sub flexible circuit board is arranged corresponding to the second branch structure.
9. The display panel according to claim 8, wherein the first sub flexible circuit board and the second branch structure are disposed apart from each other; or the first sub flexible circuit board and the second branch structure are connected into an integral structure at one side far away from the binding region.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
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| CN202011165116.2A CN112162662A (en) | 2020-10-27 | 2020-10-27 | Display panel and display device |
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| CN202011165116.2A CN112162662A (en) | 2020-10-27 | 2020-10-27 | Display panel and display device |
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| CN112860122A (en) * | 2021-03-17 | 2021-05-28 | 京东方科技集团股份有限公司 | Touch display device and display system |
| CN113342209A (en) * | 2021-06-25 | 2021-09-03 | 武汉华星光电技术有限公司 | Display panel and display device |
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