CN113963622A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN113963622A CN113963622A CN202111314946.1A CN202111314946A CN113963622A CN 113963622 A CN113963622 A CN 113963622A CN 202111314946 A CN202111314946 A CN 202111314946A CN 113963622 A CN113963622 A CN 113963622A
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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
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
- G02F1/13452—Conductors connecting driver circuitry and terminals of panels
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136254—Checking; Testing
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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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- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Optics & Photonics (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Human Computer Interaction (AREA)
Abstract
The invention discloses a display device, which comprises a display panel, an IC chip and a flexible circuit board, wherein the IC chip is arranged on the display panel; the display panel includes: a display area and a non-display area; the non-display area comprises a binding area, the binding area is provided with a plurality of conductive bonding pads, and the flexible circuit board is electrically connected with the conductive bonding pads; a multi-path distributor, a fan-out structure, a wiring area and a test circuit are arranged between the display area and the binding area; the fan-out structure comprises a plurality of fan-out lines, and the fan-out lines extend along a plurality of different directions; the wiring area comprises a plurality of wirings extending along the column direction, the first ends of the wirings are electrically connected with the fan-out lines, and the second ends of the wirings are electrically connected with the conductive bonding pads; the output end of the test circuit is electrically connected with the wiring, and the input end of the test circuit is electrically connected with the test signal input end; in the direction perpendicular to the display panel, the wiring area is overlapped with the area where the test circuit is located. The display panel and the display device provided by the embodiment can reduce the area of the non-display area, and are beneficial to realizing narrow frame.
Description
The application is divisional application with application number 201710526337.X, application date 2017, 06, 30 and invention name 'a display panel and a display device'.
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
With the development of display technologies, the display device requires a thin and light frame to improve the user experience.
Fig. 1 is a schematic diagram of a display panel provided in the prior art, and includes a display area 01 and a non-display area 02, where a demultiplexer circuit 03, a test circuit 04, a fan-out structure 05, a routing area 06, and a bonding area 07 are sequentially disposed in the non-display area 02, and generally, the non-display area where the demultiplexer circuit 03, the test circuit 04, the fan-out structure 05, the routing area 06, and the bonding area 07 are located becomes a lower frame area. The demultiplexer Circuit 03 is used for transmitting data signals to data lines in the display panel, the test Circuit 04 is used for transmitting test signals to the data lines in the display panel in a test stage to detect whether the display panel has poor display, the fan-out structure 05 comprises a plurality of fan-out lines which are densely arranged, the wire routing area 06 comprises a plurality of wires, the fan-out lines are electrically connected with the wires in a one-to-one correspondence mode, the binding area 07 is provided with a conductive pad, the wires are electrically connected with the corresponding conductive pads, and the conductive pads are used for binding an IC chip or a Flexible Circuit board (FPC for short).
As can be seen from fig. 1, the prior art provides a display panel in which the lower frame region includes more circuit structures, which is not favorable for implementing a narrow frame design.
Disclosure of Invention
In view of the foregoing, the present invention provides a display panel and a display device.
The present invention provides a display panel, comprising: a display area and a non-display area; the display area comprises a plurality of data lines which are arranged in parallel and extend along the column direction; the non-display area comprises a binding area, and the binding area is provided with a plurality of conductive bonding pads; a multi-path distributor, a fan-out structure, a wiring area and a test circuit are arranged between the display area and the binding area; the output end of the demultiplexer is electrically connected with the plurality of data lines, and the input end of the demultiplexer is electrically connected with the fan-out structure; the fan-out structure comprises a plurality of fan-out lines, and the fan-out lines extend along a plurality of different directions; the wiring area comprises a plurality of wirings extending along the column direction, the first ends of the wirings are electrically connected with the fan-out lines, and the second ends of the wirings are electrically connected with the conductive bonding pads; the output end of the test circuit is electrically connected with the wiring, and the input end of the test circuit is electrically connected with the test signal input end; in the direction perpendicular to the display panel, the wiring area is overlapped with the area where the test circuit is located.
In some optional embodiments, the test circuit comprises a plurality of sub-test circuits and a control signal line, wherein the control signal line is used for controlling the sub-test circuits to be switched on and off; the output end of the sub-test circuit is electrically connected with the wiring, and the input end of the sub-test circuit is electrically connected with the test signal input end.
In some optional embodiments, a sub-test circuit includes a first thin film transistor, a gate of the first thin film transistor is electrically connected to the control signal line, a first pole of the first thin film transistor is electrically connected to the fan-out line, and a second pole of the first thin film transistor is electrically connected to the test signal input terminal.
In some alternative embodiments, the sub-test circuits are arranged alternately with the first tracks.
In some optional embodiments, two adjacent sub-test circuits are a sub-test circuit group, and two adjacent wires are a wire group; the sub-test circuit groups and the wiring groups are alternately arranged.
In some optional embodiments, the touch panel further includes a plurality of touch electrodes and a plurality of touch traces, and the touch electrodes are electrically connected to the corresponding touch traces; the conductive bonding pads comprise a first conductive bonding pad and a second conductive bonding pad, the second end of the wire is electrically connected with the first conductive bonding pad, and the second conductive bonding pad is electrically connected with the touch wire.
In some alternative embodiments, the second conductive pad is disposed between two adjacent first conductive pads.
In some alternative embodiments, the demultiplexer comprises a plurality of sub-demultiplexers; a sub-demultiplexer includes a sub-input terminal and three sub-output terminals, the sub-output terminals being electrically connected to the data lines, the sub-input terminals being electrically connected to a fan-out line.
In some alternative embodiments, along the row direction, the width of the side of the fan-out structure close to the demultiplexer is d1, and the width of the side of the fan-out structure close to the routing region is d2, where d1 > d 2.
The invention also provides a display device, which comprises the display panel provided by the invention, an IC chip and a flexible circuit board, wherein the flexible circuit board is electrically connected with the conductive bonding pad; the IC chip is arranged on the flexible circuit board and is electrically connected with the flexible circuit board.
Compared with the prior art, the display panel and the display device provided by the invention have the beneficial effects that:
in the display panel and the display device provided by the invention, the wiring area is overlapped with the area where the test circuit is located in the direction perpendicular to the display panel, compared with the prior art, the area where the test circuit is located is adjusted, and the area where the test circuit is located is overlapped with the wiring area, so that the area of a non-display area can be reduced, and the narrow frame of the display panel and the display device is realized.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic diagram of a display panel provided in the prior art;
FIG. 2 is a schematic diagram of a display panel according to an embodiment of the present invention;
FIG. 2a is an enlarged partial view of region A of FIG. 2;
FIG. 3 is another enlarged partial schematic view of region A of FIG. 2;
FIG. 3a is a schematic diagram of a partial circuit structure of the display panel provided in the embodiment of FIG. 3;
FIG. 3b is a schematic circuit diagram of a sub-test circuit in the display panel provided in the embodiment of FIG. 3;
FIG. 4 is a schematic diagram of another partial circuit structure in the display panel provided in the embodiment of FIG. 3;
FIG. 5 is a schematic diagram of a partial circuit structure of the display panel provided in the embodiment of FIG. 3;
FIG. 6 is a schematic diagram of another display panel provided in an embodiment of the invention;
FIG. 6a is an enlarged partial schematic view of region B of FIG. 6;
FIG. 7 is a further enlarged partial schematic view of region A of FIG. 2;
FIG. 8 is a schematic diagram of a display device according to an embodiment of the present invention
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Referring to fig. 2 and fig. 2a in combination, fig. 2 is a schematic view of a display panel according to an embodiment of the present invention, and fig. 2a is a partially enlarged schematic view of a region a in fig. 2. Fig. 2 provides a display panel including a display area 10 and a non-display area 20; the display area 10 includes a plurality of data lines 11 arranged in parallel and extending in a column direction; the non-display area 20 includes a bonding area 70, the bonding area 70 being provided with a plurality of conductive pads 71; a demultiplexer 30, a fan-out structure 40, a wiring area 50 and a test circuit 60 are arranged between the display area 10 and the binding area 70; the output end 31 of the demultiplexer 30 is electrically connected to the plurality of data lines 11, and the input end 32 of the demultiplexer is electrically connected to the fan-out structure 40; the fan-out structure 40 includes a plurality of fan-out lines 41, the plurality of fan-out lines 41 extending along a plurality of different directions; the routing area 50 includes a plurality of traces 51 extending in the column direction, a first end of the trace 51 is electrically connected to the fanout line 41, and a second end of the trace is electrically connected to the conductive pad 71; the output end of the test circuit 60 is electrically connected with the wire 51, and the input end of the test circuit 60 is electrically connected with the test signal input end 63; the routing area 50 overlaps with the area where the test circuit 60 is located in a direction perpendicular to the display panel.
In the display panel provided in fig. 2, the display area 10 is used for displaying image information, and may include a plurality of pixels, for example, the non-display area 20 does not have a display function, and the non-display area 20 may be provided with a routing and circuit structure. The display area 10 includes a plurality of data lines 11 arranged in parallel and extending along a column direction, the data lines 11 are used for transmitting electrical signals, the data lines 11 are arranged in parallel, it should be noted that the data lines 11 extend along the column direction as a whole, but there is a slight bending in a local area that is adaptive according to the shape of the pixels, and the slight bending does not affect the extending direction of the data lines 11 extending along the column direction as a whole. In order to transmit the electrical signals of the display panel to the terminal device in which the display panel is located for analysis and calculation, a binding region 70 is provided for binding electronic components for analyzing and calculating the electrical signals in the display panel or for transmitting the electrical signals in the display panel. Specifically, the bonding region 70 is provided with a plurality of conductive pads 71, and the conductive pads 71 are used for electrically connecting with an electronic component, where the electronic component may be an IC chip or a Flexible Printed Circuit (FPC). A demultiplexer 30 is disposed between the display region 10 and the binding region 70, an output terminal 31 of the demultiplexer 30 is electrically connected to the plurality of data lines 11, an input terminal 32 is electrically connected to the fan-out structure 40, and the data signal is transmitted to the demultiplexer 30 through the fan-out structure, and is transmitted to the plurality of data lines 11 after being processed by the demultiplexer 30. A fan-out structure 40 and a routing area 50 are further arranged between the display area 10 and the binding area 70, the fan-out structure 40 includes a plurality of fan-out lines 41 extending along a plurality of different directions, the routing area 50 includes a plurality of routing lines 51 extending along a column direction, generally, one side of the fan-out structure close to the display area is wider, one side close to the binding area is narrower, the shape is similar to a fan-shaped structure, the fan-out lines 41 in the fan-out structure 40 are arranged more densely, the routing lines 51 in the routing area 50 are arranged relatively sparsely, a blank is arranged between the routing lines 51, and the fan-out lines 41 are electrically connected with the corresponding routing lines 51; the traces 51 extend to the bonding regions 70 along the column direction and are then electrically connected to the corresponding conductive pads 71, thereby transmitting electrical signals in the display panel to the IC chip or the flexible circuit board. A test circuit 60 is further disposed between the display area 10 and the binding area 70, an output end of the test circuit 60 is electrically connected to the routing line 51, an input end of the test circuit 60 is electrically connected to the test signal input end 63, the test signal input end 63 is used for inputting a test signal to the test circuit 60, specifically, after the display panel is manufactured, the display panel needs to be tested to detect a defective product, the test signal is input through the test signal input end 63, the test signal is transmitted to the fan-out line 41 electrically connected to the test circuit 60 through the test circuit 60, the fan-out line 41 transmits the test signal to the display panel, and the defective product is detected by observing a display picture of the display panel after receiving the test signal. In the direction perpendicular to the display panel, the routing area 50 overlaps with the area where the test circuit 60 is located, and specifically, the schematic diagram of the display panel provided in fig. 2 is a schematic diagram obtained by observing in the direction perpendicular to the display panel; due to the relative sparseness of the placement of traces 51 in routing area 50, test circuit 60 may be placed in the void in routing area 50 such that routing area 50 overlaps the area where test circuit 60 is located. The overlapping of the routing area 50 and the area of the test circuit 60 can have four situations: in the first case, there is a partial overlap between the routing area 50 and the area where the test circuit 60 is located; in the second case, the routing area 50 completely covers the area where the test circuit 60 is located; in the third case, the area where the test circuit 60 is located completely covers the routing area 50; in the fourth case, the routing area 50 has the same shape and the same area as the area where the test circuit 60 is located, and the routing area 50 completely overlaps the test circuit 60. In the display panel provided in the embodiment of fig. 2, only the first case where there is a partial overlap between the wiring area 50 and the test circuit 60 is taken as an example for explanation.
In the display panel provided by this implementation, in the direction perpendicular to the display panel, the routing area overlaps with the area where the test circuit is located, and compared with the prior art, the area where the test circuit is located is adjusted, and the area where the test circuit is located and the routing area are overlapped, the area of a non-display area can be reduced, thereby realizing the narrow frame of the display panel and the display device.
In some alternative implementations, please refer to fig. 3 and fig. 3a, fig. 3 is another partial enlarged schematic view of a region a in fig. 2, and fig. 3a is a partial circuit structure schematic view of the display panel provided in the embodiment of fig. 3. In particular, fig. 3a provides a schematic circuit diagram of the test circuit 60 and the routing area 50. In the display panel provided in the embodiment of fig. 3, the test circuit 60 includes a plurality of sub-test circuits 61 and a control signal line 62, and the control signal line 62 is used for controlling the sub-test circuits 61 to be turned on and off; the output terminal of the sub-test circuit 61 is electrically connected to the trace 51, and the input terminal of the sub-test circuit is electrically connected to the test signal input terminal 63. Specifically, the test circuit 60 includes a plurality of sub-test circuits 61 and a control signal line 62, each sub-test circuit 61 is electrically connected to a corresponding test signal input terminal 63, and the control signal line 62 is used for controlling the sub-test circuits 61 to be turned on and off, so that whether the test signal at the test signal input terminal 63 is input to the display panel can be controlled. Optionally, the display panel according to the embodiment of the present invention includes two test signal input terminals 63, one test signal input terminal 63 is used to be electrically connected to the odd-numbered sub-test circuits 61, and the other test signal input terminal 63 is used to be electrically connected to the even-numbered sub-test circuits 61. In the display panel provided by the embodiment, the routing area 50 completely covers the area where the test circuit 60 is located, and compared with the prior art, the area where the test circuit 60 is located is completely integrated in the routing area 50, so that the area of a non-display area can be further reduced, and the narrow frame of the display panel and the display device is realized. .
While the present invention provides a specific circuit structure of the sub-test circuit 61, it should be understood that in other alternative implementations, the specific circuit structure of the sub-test circuit 61 may be various, and the present invention is herein exemplified by the specific circuit structure of the sub-test circuit 61 and should not be construed as specifically limiting the present invention.
Referring to fig. 3b, fig. 3b is a schematic circuit diagram of a sub-test circuit in the display panel provided in the embodiment of fig. 3. In the embodiment shown in fig. 3b, a sub-test circuit 61 includes a first tft T1, the gate of the first tft T1 is electrically connected to the control signal line 62, the first pole of the first tft T1 is electrically connected to the trace 51, and the second pole of the first tft T1 is electrically connected to the test signal input terminal 63. The sub-test circuit 61 provided in this embodiment has a simple circuit structure, and includes only one first thin film transistor T1, the gate of the first thin film transistor T1 is electrically connected to the control signal line 62, the control signal line 62 can control the first thin film transistor T1 to be turned on or off, and the test signals can be respectively input to the sub-test circuit 61 from the test signal input terminal 63.
In the following, the present invention provides two embodiments of specific arrangement modes of the sub-test circuit in the routing area, and it can be understood that, in other alternative implementations, the specific arrangement modes of the sub-test circuit may be various, and the present invention is described herein as an example of the specific arrangement modes of the sub-test circuit, and should not be construed as a specific limitation to the present invention.
Referring to fig. 4, fig. 4 is a schematic diagram of another partial circuit structure in the display panel provided in the embodiment of fig. 3, and specifically, fig. 4 is a schematic diagram of a circuit structure of the routing area and the test circuit in the display panel provided in the embodiment of fig. 3. Fig. 4 is only illustrated on the basis of the embodiment provided in fig. 3b, and the same parts are not repeated. Fig. 4 provides an embodiment in which the sub-test circuits 61 are arranged alternately with the first traces 51. Specifically, the sub-test circuit 61 is disposed between two adjacent first traces 51.
Referring to fig. 5, fig. 5 is a schematic diagram of a circuit structure of another part of the display panel provided in the embodiment of fig. 3, and specifically, fig. 5 is a schematic diagram of a circuit structure of the routing area and the test circuit in the display panel provided in the embodiment of fig. 3. Fig. 5 is only illustrated on the basis of the embodiment provided in fig. 3b, and the same parts are not repeated. Fig. 5 provides an embodiment in which two adjacent sub-test circuits 61 are a sub-test circuit group 611, and two adjacent traces 51 are a trace group 511; the sub-test circuit subgroups 611 are arranged alternately with the track subgroups 511. It is understood that the present embodiment provides the display panel in which the sub-test circuit groups 611 are arranged alternately with the trace group 511, but there may be a single trace 51 or a single sub-test circuit 61 at the edge portion of the display panel. Specifically, in this embodiment, two traces 51 are disposed adjacently, and two sub-test circuits 61 are disposed adjacently, and two adjacent sub-test circuits 61 may share a part of control signal lines, so as to simplify the traces and circuit layout of the display panel.
In some optional implementation manners, the display panel provided in any of the above embodiments of the present invention may further have a touch function, including a plurality of touch electrodes and a plurality of touch traces, where the touch electrodes are electrically connected to the corresponding touch traces; the conductive bonding pads comprise a first conductive bonding pad and a second conductive bonding pad, the second end of the wire is electrically connected with the first conductive bonding pad, and the second conductive bonding pad is electrically connected with the touch wire. Referring to fig. 6 and fig. 6a, fig. 6 is a schematic view of another display panel according to an embodiment of the present invention, and fig. 6a is a partially enlarged schematic view of a region B in fig. 6. Fig. 6 is illustrated on the basis of the display panel provided in the embodiment of fig. 2, and the same parts are not repeated, the display panel provided in fig. 6 further includes a plurality of touch electrodes 80 and a plurality of touch traces 81, and the touch electrodes 80 are electrically connected to the corresponding touch traces 81; the conductive pad 71 includes a first conductive pad 711 and a second conductive pad 712, the second end of the trace 51 is electrically connected to the first conductive pad 711, and the second conductive pad 712 is electrically connected to the touch trace 81. It should be noted that, the display panel provided in this embodiment takes a mutual capacitance mode touch electrode as an example for description, where the touch electrode 80 includes a first touch electrode 801 and a second touch electrode 802, the first touch electrode 801 and the second touch electrode 802 are insulated in a crossed manner, and one of the first touch electrode 801 and the second touch electrode 802 is a touch emitting electrode, and the other is a touch sensing electrode. The first touch electrode 801 is electrically connected to the first touch trace 811, and the second touch electrode 802 is electrically connected to the second touch trace 812. It is to be understood that in the display panel provided in this embodiment, the working mode of the touch electrode may also be a self-capacitance type, and the shape and the working mode of the touch electrode are not particularly limited in the present invention. In the display panel provided in this embodiment, the conductive pads 71 include first conductive pads 711 and second conductive pads 712, the first conductive pads 711 are used for transmitting electrical signals to the traces 51, and the second conductive pads 712 are used for transmitting electrical signals to the touch traces 81. In the display panel provided by this embodiment, the conductive pad 712 electrically connected to the touch trace 81 is also disposed in the bonding region, and an electrical signal can be transmitted to the trace 51 and the touch trace 81 at the same time by subsequently bonding an IC chip or a flexible circuit board, thereby simplifying the layout of the display panel.
Alternatively, the second conductive pad 712 is disposed between two adjacent first conductive pads 711. Specifically, the second conductive pads 712 may be alternately disposed with the first conductive pads 711, or one second conductive pad 712 may be disposed every two or more first conductive pads 711. The specific arrangement of the second conductive pad 712 may be set according to specific implementation, and the embodiment is not particularly limited thereto. In the display panel provided in this embodiment, the second conductive pads 712 are disposed between two adjacent first conductive pads 711, and the second conductive pads 712 do not need to be disposed in the same area in a concentrated manner, so that the layout of circuit traces such as traces and touch traces in the display panel can be simplified.
In some alternative implementations, on the basis of any of the above embodiments of the present invention, the demultiplexer includes a plurality of sub-demultiplexers; a sub-demultiplexer includes a sub-input terminal and three sub-output terminals, the sub-output terminals being electrically connected to the data lines, the sub-input terminals being electrically connected to a fan-out line. Specifically, referring to fig. 7, fig. 7 is another partially enlarged schematic view of a region a in fig. 2, in the display panel provided in the embodiment of fig. 7, the demultiplexer 30 includes a plurality of sub-demultiplexers 301; a sub-demultiplexer 301 includes a sub-input terminal 321 and three sub-output terminals 311, the sub-output terminals 311 are electrically connected to the data lines 11, and the sub-input terminal 321 is electrically connected to a fan-out line 41. In the display panel provided by this embodiment, the input-output ratio of the demultiplexer 30 is 1:3, data signals can be provided for the three data lines 11 through one sub-input end 321, and by providing the plurality of sub-demultiplexers 301, circuit routing of the non-display area 20 can be simplified, the number of the conductive pads 71 can be reduced, and the display panel can be advantageously narrowed in frame.
In some alternative implementations, please continue to refer to fig. 7, along the row direction, the width of the side of the fan-out structure 40 close to the demultiplexer 30 is d1, and the width of the side of the fan-out structure 40 close to the routing area 50 is d2, where d1 > d 2. In this embodiment, the fan-out structure has a wider side near the demultiplexer 30 and a narrower side near the routing area 50, so that the routing area 50 is narrower and the area of the non-display area 20 is saved.
The invention also provides a display device, which comprises the display panel provided by the invention, an IC chip and a flexible circuit board, wherein the flexible circuit board is electrically connected with the conductive bonding pad; the IC chip is arranged on the flexible circuit board and is electrically connected with the flexible circuit board. Specifically, please refer to fig. 8, fig. 8 is a schematic diagram of a display device according to an embodiment of the present invention. Fig. 8 is only illustrated on the basis of the display panel provided in the embodiment of fig. 2, and fig. 8 uses the reference numerals of fig. 2, and the same parts are not repeated, and the display device provided in fig. 8 includes the display panel 100 provided in any of the above embodiments of the present invention, and further includes an IC chip 300 and a flexible circuit board 200, where the flexible circuit board 200 is electrically connected to the conductive pad 71; the IC chip 300 is disposed on the flexible wiring board 200, and the IC chip 300 is electrically connected to the flexible wiring board 200. In the display device provided in this embodiment, the IC chip 300 is bound on the flexible printed circuit 200, the flexible printed circuit 200 is bound on the display panel 100, the electrical signal in the display panel 100 can be transmitted to the IC chip 300 through the flexible printed circuit 200, and the IC chip 300 calculates and analyzes the electrical signal in the display panel 100. The display device provided in this embodiment has the excellent effects of the display panel provided in the embodiments of the present invention, and details thereof are not repeated herein. The display device provided by the embodiment can be any display equipment with an input/output interface, such as a mobile phone, a television, a tablet personal computer, a vehicle-mounted display, an industrial control display and the like, and the display equipment is not limited in the application and can be specifically determined according to the situation.
Compared with the prior art, the display panel and the display device provided by the invention have the beneficial effects that:
in the display panel and the display device provided by the invention, the wiring area is overlapped with the area where the test circuit is positioned in the direction vertical to the display panel, so that the area of a non-display area can be reduced, and the narrow frame of the display panel and the display device is realized.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (19)
1. A display device is characterized by comprising a display panel, an IC chip and a flexible circuit board;
the IC chip sets up on the flexible line way board, just the IC chip with the flexible line way board electricity is connected, display panel includes: a display area and a non-display area;
the display area comprises a plurality of data lines which are arranged in parallel and extend along the column direction;
the non-display area comprises a binding area, the binding area is provided with a plurality of conductive bonding pads, and the flexible circuit board is electrically connected with the conductive bonding pads;
a demultiplexer, a fan-out structure, a wiring area and a test circuit are arranged between the display area and the binding area; wherein the content of the first and second substances,
the output end of the demultiplexer is electrically connected with the plurality of data wires, and the input end of the demultiplexer is electrically connected with the fan-out structure;
the fan-out structure comprises a plurality of fan-out lines, and the fan-out lines extend along a plurality of different directions;
the wiring area comprises a plurality of wirings extending along the column direction, the first ends of the wirings are electrically connected with the fanout lines, and the second ends of the wirings are electrically connected with the conductive bonding pads;
the output end of the test circuit is electrically connected with the wiring, and the input end of the test circuit is electrically connected with the test signal input end;
in the direction perpendicular to the display panel, the routing area is overlapped with the area where the test circuit is located.
2. The display device according to claim 1, wherein the test circuit includes a plurality of sub-test circuits and a control signal line for controlling on and off of the sub-test circuits;
the output end of the sub-test circuit is electrically connected with the wiring, and the input end of the sub-test circuit is electrically connected with the test signal input end.
3. The display device according to claim 2, wherein one of the sub-test circuits comprises a first thin film transistor, a gate of the first thin film transistor is electrically connected to the control signal line, a first pole of the first thin film transistor is electrically connected to the fan-out line, and a second pole of the first thin film transistor is electrically connected to the test signal input terminal.
4. The display device according to claim 2, wherein the sub-test circuits are arranged alternately with the first traces.
5. The display device according to claim 2, wherein two adjacent sub-test circuits are a sub-test circuit group, and two adjacent traces are a trace group;
the sub-test circuit groups and the wiring groups are alternately arranged.
6. The display device according to claim 1, further comprising a plurality of touch electrodes and a plurality of touch traces, the touch electrodes being electrically connected to the corresponding touch traces;
the conductive pads comprise a first conductive pad and a second conductive pad, the second end of the trace is electrically connected with the first conductive pad, and the second conductive pad is electrically connected with the touch trace.
7. The display device according to claim 6, wherein the second conductive pad is provided between adjacent two of the first conductive pads.
8. The display device of claim 1, wherein the demultiplexer comprises a plurality of sub-demultiplexers;
and the sub-multi-path distributor comprises a sub-input end and three sub-output ends, the sub-output ends are electrically connected with the data lines, and the sub-input end is electrically connected with one fan-out line.
9. The display device of claim 1, wherein along the row direction, a width of a side of the fan-out structure near the demultiplexer is d1, and a width of the side of the fan-out structure near the routing region is d2, wherein d1 > d 2.
10. The display device according to claim 1, wherein the traces have a space therebetween in a row direction, and the test circuit is disposed in the space in the trace area.
11. The display device according to claim 3, wherein the size of the routing lines is larger than that of the thin film transistors in a column direction.
12. The display device according to claim 3, wherein the wiring area completely covers an area where the test circuit is located.
13. The display device according to claim 5, wherein the display panel includes a cutting line, and in an edge region of the display panel in a row direction, the number of the traces disposed between the sub-test circuit group and the cutting line is only one, or the number of the sub-test circuits disposed between the trace group and the cutting line is only one.
14. The display device according to claim 5, wherein in one of the test circuit subgroups, a part of the control signal lines is shared by adjacent two of the sub-test circuits.
15. The display device according to claim 6, wherein the touch electrodes include a first touch electrode and a second touch electrode arranged in a cross-insulating manner, the first touch electrode is electrically connected to a first touch trace, the second touch electrode is electrically connected to a second touch trace, and the second conductive pad is electrically connected to the first touch trace or the second touch trace.
16. The display device according to claim 6, wherein the touch electrode comprises a self-capacitance touch electrode.
17. The display device according to claim 6, wherein the bonding region includes the second conductive pad, and the first conductive pad and the second conductive pad are electrically connected to the same IC chip.
18. The display device according to claim 7, wherein at least some of the adjacent two touch traces include N touch traces, where N is an integer greater than 1.
19. The display device according to claim 7, wherein at least some of the two adjacent touch traces include M sub-test circuits, where M is an integer greater than 1.
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| CN202111314946.1A CN113963622A (en) | 2017-06-30 | 2017-06-30 | Display panel and display device |
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| CN202111314946.1A CN113963622A (en) | 2017-06-30 | 2017-06-30 | Display panel and display device |
| CN201710526337.XA CN107180594B (en) | 2017-06-30 | 2017-06-30 | Display panel and display device |
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| CN107180594A (en) | 2017-09-19 |
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