CN111369895B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN111369895B CN111369895B CN202010325827.5A CN202010325827A CN111369895B CN 111369895 B CN111369895 B CN 111369895B CN 202010325827 A CN202010325827 A CN 202010325827A CN 111369895 B CN111369895 B CN 111369895B
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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
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
Abstract
The invention discloses a display panel and a display device, and relates to the technical field of display, wherein the display panel comprises a display area and a non-display area; the non-display area comprises a binding area, the binding area comprises a first binding area and a second binding area, the first binding area comprises a plurality of first conductive bonding pads, and the second binding area comprises a plurality of second conductive bonding pads; in the second direction, the second binding area is positioned on one side of the first binding area far away from the display area; the non-display area comprises a test circuit, and the orthographic projection of the first test circuit to the light-emitting surface of the display panel is positioned on one side of the first binding area, which is far away from the display area; in the first direction, the orthographic projection of the first test circuit to the light-emitting surface of the display panel is positioned on one side of the second binding area. The display device comprises the display panel. The invention not only can realize a narrower frame, but also can provide enough setting space for the test circuit, and realizes the narrower frame while meeting the test requirement.
Description
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 continuous development of the display market, the visual effect of the display screen is more and more strictly required by consumers, so that the requirements on the appearance design of the display screen are diversified, and the requirements on the screen occupation ratio are higher and higher. The trend of the comprehensive screen technology is to pursue a higher screen occupation ratio through the design of an ultra-narrow frame or even no frame, and under the condition that the total area of the machine body is not changed, the display area is maximized, and the visual effect is more brilliant.
Among the prior art, generally in display panel's processing procedure, accomplish before the box preparation, drive chip generally will test when not attached promptly, whether have the bad of foreign matter, luminance inequality (mura), bright spot and so on in the detection screen to ensure that display panel's overall arrangement is walked the line and is shown the function intact, test circuit sets up on the panel, is undoubtedly unfavorable for realizing narrow frame.
Therefore, it is an urgent need to solve the technical problem of the art to provide a display panel and a display device that can meet the test requirements in the panel process and realize a narrow frame.
Disclosure of Invention
In view of the above, the present invention provides a display panel and a display device, so as to solve the problem that the display panel in the prior art cannot meet the test requirements in the panel manufacturing process and realize a narrow frame.
The invention discloses a display panel, comprising: a display area and a non-display area disposed around the display area; a plurality of scan lines extending in a first direction and a plurality of data lines extending in a second direction, the first direction and the second direction intersecting; the non-display area comprises a binding area, the binding area comprises a first binding area and a second binding area, the first binding area comprises a plurality of first conductive bonding pads, and the second binding area comprises a plurality of second conductive bonding pads; in the second direction, the second binding area is positioned on one side of the first binding area far away from the display area; the non-display area range of the display panel comprises a test circuit, the test circuit at least comprises a first test circuit, and in the second direction, the orthographic projection of the first test circuit to the light-emitting surface of the display panel is positioned on one side, far away from the display area, of the first binding area; in the first direction, the orthographic projection of the first test circuit to the light-emitting surface of the display panel is positioned on one side of the second binding area.
Based on the same inventive concept, the invention also discloses a display device, which comprises the display panel.
Compared with the prior art, the display panel and the display device provided by the invention at least realize the following beneficial effects:
the binding region of the display panel comprises a first binding region and a second binding region which are sequentially arranged along a second direction, and the second binding region is positioned on one side of the first binding region, which is far away from the display region, in the second direction. The first binding region comprises a plurality of first conductive bonding pads, the first conductive bonding pads can be output conductive bonding pads, the second binding region comprises a plurality of second conductive bonding pads, the second conductive bonding pads can be input conductive bonding pads, the second conductive bonding pads are used for being bound and electrically connected with input signal ends of the driving circuit in a one-to-one correspondence mode, driving signals are input to the driving circuit from the second conductive bonding pads, the first conductive bonding pads are used for being bound and electrically connected with output signal ends of the driving circuit in a one-to-one correspondence mode, the second conductive bonding pads can be input to driving signals on the driving circuit, the driving signals are output to the display panel from the first conductive bonding pads, and driving signals for realizing display functions are provided for the display panel. The design test circuit at least comprises a first test circuit, and in the second direction, the orthographic projection of the first test circuit to the light-emitting surface of the display panel is positioned on one side of the first binding area, which is far away from the display area; in the first direction, the orthographic projection of the first test circuit to the light-emitting surface of the display panel is located on one side of the second binding area, thereby the empty space formed on at least one side of the second binding area is well utilized, the first test circuit in the test circuit is arranged in the space, the space between the first binding area and the second binding area is favorably reduced, a narrower frame is realized, enough space can be provided for the test circuit, the test circuit with a large enough area is ensured to be arranged as much as possible, the delay of the screen in the test process when being lightened is avoided, the efficiency of detecting the defects of a production line is improved, the narrower frame is realized while the test requirements are met.
Of course, it is not necessary for any product in which the present invention is practiced to specifically achieve all of the above-described technical effects simultaneously.
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 plan view of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic plan view of another display panel according to an embodiment of the present invention;
FIG. 3 is a schematic plan view of another display panel according to an embodiment of the present invention;
FIG. 4 is a schematic plan view of another display panel according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a planar structure of another display panel according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a planar structure of another display panel according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a planar structure of another display panel according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a planar structure of another display panel according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of a planar structure of another display panel according to an embodiment of the present invention;
fig. 10 is a schematic plan view of another display panel according to an embodiment of the present invention;
fig. 11 is a schematic plan view of another display panel according to an embodiment of the present invention;
FIG. 12 is an enlarged partial schematic view of FIG. 11;
fig. 13 is a schematic plan view of another display panel according to an embodiment of the present invention;
fig. 14 is a schematic plan view of another display panel according to an embodiment of the present invention;
FIG. 15 is an enlarged partial schematic view of FIG. 14;
fig. 16 is a schematic plan view of another display panel according to an embodiment of the present invention;
FIG. 17 is an enlarged partial schematic view of FIG. 16;
fig. 18 is a schematic plan view of another display panel according to an embodiment of the present invention;
FIG. 19 is a schematic plan view of another display panel according to an embodiment of the present invention;
fig. 20 is a schematic plan view of another display panel according to an embodiment of the present invention;
fig. 21 is a schematic plan view 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. 1, fig. 1 is a schematic plan view of a display panel according to an embodiment of the present invention, where a display panel 000 according to the embodiment includes: a display area AA and a non-display area NA disposed around the display area AA; a plurality of scan lines G extending in a first direction X and a plurality of data lines S extending in a second direction Y, the first direction X and the second direction Y intersecting; optionally, the first direction X and the second direction Y are perpendicular to each other;
the non-display area NA includes a bonding area BA including a first bonding area BA1 and a second bonding area BA2, the first bonding area BA1 includes a plurality of first conductive pads 10, and the second bonding area BA2 includes a plurality of second conductive pads 20; in the second direction Y, the second binding area BA2 is located at a side of the first binding area BA1 away from the display area AA; optionally, the length L2 of the second bonding area BA2 where the second conductive pad 20 is located is shorter than the length L1 of the first bonding area BA1 where the first conductive pad 10 is located; it should be noted that, in order to clearly illustrate the structure of the bonding area BA, the scale of the bonding area BA is enlarged and illustrated in the drawings, and in actual implementation, the area occupied by the bonding area BA in the display panel is small, and the arrangement, number, and size of the first conductive pads 10 and the second conductive pads 20 are also only schematically drawn and do not represent an actual implementation structure.
The non-display area NA of the display panel 000 includes a test circuit 30 (illustrated by a block diagram, the specific structure is not specifically limited in this embodiment, and only the test requirement needs to be completed), the test circuit 30 includes at least a first test circuit 301, and in the second direction Y, the orthographic projection of the first test circuit 301 to the light-emitting surface of the display panel 000 is located on a side of the first binding area BA1 away from the display area AA; in the first direction X, the orthographic projection of the first test circuit 301 to the light emitting surface of the display panel 000 is located on one side of the second bonding area BA 2.
Specifically, the bonding area BA of the display panel 000 of the embodiment is used for bonding a driving circuit (a driving chip or a flexible circuit board), and the driving circuit bonded in the bonding area BA is used for providing a driving signal for implementing a display function for the display panel. The bonding areas BA include a first bonding area BA1 and a second bonding area BA2 sequentially arranged along the second direction Y (extending direction of the data lines S), and the second bonding area BA2 is located on a side of the first bonding area BA1 away from the display area AA in the second direction Y. The first bonding area BA1 includes a plurality of first conductive pads 10, the first conductive pads 10 may be output conductive pads, the second bonding area BA2 includes a plurality of second conductive pads 20, the second conductive pads 20 may be input conductive pads, the second conductive pads 20 are electrically connected to respective input signal terminals of the driving circuit in a one-to-one binding manner, and the driving signal is input from the second conductive pads 20 to the driving circuit, the first conductive pads 10 are electrically connected to respective output signal terminals of the driving circuit in a one-to-one binding manner, and the driving signal input from the second conductive pads 20 to the driving circuit is output from the first conductive pads 10 to the display panel 000 to provide a driving signal for the display panel to implement a display function. Generally, when the second conductive pads 20 are used as input conductive pads, the number of signal terminals required to be input into the driving circuit is smaller, so that the number of the second conductive pads 20 is smaller than that of the first conductive pads 10, and further, along the first direction X, the length L2 of the second bonding area BA2 where the second conductive pads 20 are located is shorter than the length L1 of the first bonding area BA1 where the first conductive pads 10 are located, so that along the first direction X, an empty space M (as shown in fig. 1) is formed on at least one side of the second bonding area BA 2. The non-display area NA range of the display panel 000 of the embodiment includes the test circuit 30, the test circuit 30 is used for detecting whether there is a defect such as a foreign object, mura, or a bright spot in the screen when the driving circuit is not attached, in order to meet the test requirement, a large space is required to set the test circuit 30 with a large enough area on the display panel, otherwise, in the test process, the screen is lit up and has a large delay, which is not beneficial to detecting defects in the production line.
In the prior art, the test circuit 30 is generally disposed between the first bonding area BA1 and the second bonding area BA2 along the second direction Y, and at this time, if a narrow frame is to be implemented, the panel space occupied by the test circuit 30 between the first bonding area BA1 and the second bonding area BA2 must be reduced, which is not favorable for meeting the test requirement and detecting defects in a production line; in order to satisfy the test requirements and the inspection failure of the production line, the panel space occupied by the test circuit 30 must be increased, and a narrow bezel cannot necessarily be realized.
In order to solve the above problem, the design test circuit 30 at least includes a first test circuit 301, and in the second direction Y, a forward projection of the first test circuit 301 to the light-emitting surface of the display panel 000 is located on a side of the first bonding area BA1 away from the display area AA; in the first direction X, the orthographic projection of the first test circuit 301 to the light-emitting surface of the display panel 000 is located on one side of the second binding area BA2, so that the empty space M formed on at least one side of the second binding area BA2 is better utilized, the first test circuit 301 in the test circuit 30 is arranged in the space M, the space between the first binding area BA1 and the second binding area BA2 is favorably reduced, a narrower frame is further realized, a sufficient setting space can be provided for the test circuit 30, the test circuit 30 with a large enough area is ensured to be set as much as possible, the delay of the screen in the test process is avoided when the screen is lighted, the efficiency of detecting the defects of a production line is improved, and the narrower frame is realized while the test requirements are met.
In some optional embodiments, referring to fig. 2, fig. 2 is a schematic plan view of another display panel according to an embodiment of the present invention, in which the test circuit 30 further includes a second test circuit 302, and orthogonal projections of the second test circuit 302 and the first test circuit 301 to the light-emitting surface of the display panel 000 are respectively located at two opposite sides of the second bonding area BA 2.
The present embodiment further illustrates that the design test circuit 30 at least includes a first test circuit 301 and a second test circuit 302, and in the second direction Y, orthographic projections of the first test circuit 301 and the second test circuit 302 on the light emitting surface of the display panel 000 are both located on a side of the first bonding area BA1 away from the display area AA; in the first direction X, the orthographic projection of the first test circuit 301 to the light-emitting surface of the display panel 000 is located on one side of the second binding region BA2, the orthographic projection of the second test circuit 302 to the light-emitting surface of the display panel 000 is located on one side of the second binding region BA2 away from the first test circuit 301, that is, the orthographic projections of the second test circuit 302 and the first test circuit 301 to the light-emitting surface of the display panel 000 are respectively located on two opposite sides of the second binding region BA2, so that the empty space M formed on two sides of the second binding region BA2 is better utilized, and the first test circuit 301 and the second test circuit 302 in the test circuit 30 are both disposed in the space M, which is not only beneficial to further reducing the space between the first binding region BA1 and the second binding region BA2, thereby realizing a narrower frame, but also further increasing the settable space of the test circuit 30, further increasing the settable area of the test circuit 30, the delay of the screen when lightening in the test process is avoided, the efficiency of bad production line detection is improved, and the narrower frame is also realized while the test requirement is better met.
In some alternative embodiments, referring to fig. 2 and fig. 3, fig. 3 is a schematic plan view of another display panel according to an embodiment of the present invention, in which the first test circuit 301 and the second test circuit 302 are electrically connected to each other through at least two signal lines 40.
The embodiment further explains that the test circuit 30 is included in the non-display area NA of the display panel 000, and when the test circuit 30 at least includes the first test circuit 301 and the second test circuit 302, and the first test circuit 301 and the second test circuit 302 are located in different areas on the display panel 000, the first test circuit 301 and the second test circuit 302 can be electrically connected to each other through at least two signal lines 40, so that test detection signals can be provided for the first test circuit 301 and the second test circuit 302 at the same time during testing, so that different areas of the whole display panel 000 can be tested synchronously, which is beneficial to improving test efficiency and test effect.
The test circuit 30 of the present embodiment is configured to detect whether there is a defect such as a foreign object, mura, or a bright spot in the screen when the driving circuit is not attached, that is, before the driving circuit is not attached, a pixel driving signal is provided for a pixel in the display panel 000, optionally, one of the at least two signal lines 40 is a switch control signal line for controlling whether a test detection signal is input to the pixel in the display area AA, and the other signal line is a test data signal line for providing a test data voltage signal for the pixel in the display area AA, and the pixel can be lit for testing during a test operation.
It should be noted that fig. 2 and fig. 3 in this embodiment only schematically illustrate positions where the two signal lines 40 may be disposed, as shown in fig. 2, the two signal lines 40 may both be located between the first bonding area BA1 and the second bonding area BA2, and as also shown in fig. 3, the two signal lines 40 may both be located on a side of the second bonding area BA2 away from the first bonding area BA1, which is not specifically limited in this embodiment, and it is only necessary to electrically connect the first test circuit 301 and the second test circuit 302 to each other while not affecting the narrow frame. The shape of the signal line 40 is not limited to the straight line shape in the figure, and may be designed to be other shapes to avoid the structure in the display panel, and the description of the embodiment is omitted here.
In some alternative embodiments, please refer to fig. 3 and fig. 4 in combination, fig. 4 is a schematic plan view of another display panel according to an embodiment of the present invention, in the second direction Y, each of the second conductive pads 20 includes a vertex R2 or an edge R1 (in fig. 3 and fig. 4, each of the second conductive pads 20 includes an edge R1 adjacent to one side of the first conductive pad 10 is taken as an example), a connection line of at least a portion of the vertex R2 or the edge R1 is a first connection line K, and the first connection line K extends along the first direction X.
This embodiment explains that the arrangement manner of the second conductive pads 20 in the second bonding area BA2 may be flush as shown in fig. 3, and may also be staggered in the second direction Y as shown in fig. 4, that is, in all the second conductive pads 20 along the first direction X, the first, third, fifth, and … … odd second conductive pads 20 are flush, and the second, fourth, sixth, and … … even second conductive pads 20 are flush, which is beneficial to reducing the risk of short circuit between adjacent second conductive pads 20. In the arrangement of the second conductive pads 20 shown in fig. 3 of the present embodiment, in the second direction Y, each second conductive pad 20 includes an edge R1 close to one side of the first conductive pad 10, a connection line of all the edges R1 is a first connection line K, and the first connection line K extends along the first direction X; in the arrangement of the second conductive pads 20 shown in fig. 4, in the second direction Y, each second conductive pad 20 includes an edge R1 close to one side of the first conductive pad 10, a connection line of a partial edge R1 (the second conductive pad 20 closer to the first bonding area BA 1) is a first connection line K, and the first connection line K extends along the first direction X, so that the arrangement of the second conductive pads 20 is flexible, and the second conductive pads 20 can be regularly arranged, which is beneficial to improving the manufacturing efficiency.
It should be noted that, in fig. 3 and 4 of the present embodiment, the shapes of the conductive pads are illustrated by taking the first conductive pad 10 and the second conductive pad 20 as regular rectangles as an example, and in an actual implementation process, the shape of the conductive pad may not be in a regular pattern due to the limitation of process conditions, as shown in fig. 5 and 6, fig. 5 is a schematic plane structure diagram of another display panel provided in an embodiment of the present invention, fig. 6 is a schematic plane structure diagram of another display panel provided in an embodiment of the present invention, the shapes of the first conductive pad 10 and the second conductive pad 20 in fig. 5 and 6 are long strips as a whole, however, in the structure of the second conductive pads 20, the point-shaped structure is located near the first conductive pad 10, and in this case, in the second direction Y, each second conductive pad 20 includes a vertex R2 near the first conductive pad 10, and a connection line of at least a part of the vertices R2 is the first connection line K.
In some alternative embodiments, with continuing reference to fig. 3 and fig. 4, in this embodiment, the plurality of first conductive pads 10 are sequentially arranged along the first direction X, and the plurality of second conductive pads 20 are sequentially arranged along the first direction X; the distances from the first conductive pad 10 to the first connection line K in the second direction Y are all equal.
The present embodiment further explains that the plurality of first conductive pads 10 are sequentially arranged along the first direction X, the plurality of second conductive pads 20 are sequentially arranged along the first direction X, and when the distances from the first conductive pads 10 to the first connection line K are equal in the second direction Y, the first test circuit 301 and the second test circuit 302 in the test circuit 30 are both disposed in the space M on opposite sides of the second bonding area BA2, and at this time, the second conductive pads 20 can be further moved toward the direction close to the first conductive pads 10, which is not only beneficial to further reducing the space between the first bonding area BA1 and the second bonding area BA2, achieving a narrower frame, but also further increasing the space where the test circuit 30 can be disposed, further increasing the area where the test circuit 30 can be disposed, avoiding a delay in lighting a screen during a test process, and improving efficiency of detecting defects, the test requirements are better met, and meanwhile, a narrower frame is also realized.
It should be noted that, in fig. 3 and fig. 4 of this embodiment, the plurality of first conductive pads 10 sequentially arranged along the first direction X are arranged in a row, optionally, the plurality of first conductive pads 10 sequentially arranged along the first direction X may also be divided into two or more rows, and the two or more rows of first conductive pads 10 are sequentially arranged in the second direction Y, that is, the arrangement of the plurality of first conductive pads 10 may also be the second conductive pads 20 shown in fig. 4 in the above embodiment, and the first conductive pads 10 adjacent to each other in the first direction X are staggered in the second direction Y (not shown in the drawings). At this time, in the second direction Y, the distance of the first conductive pad 10 to the first wire K refers to the distance of the same row of first conductive pads 10 to the first wire K.
In some optional embodiments, please refer to fig. 7, fig. 7 is a schematic plane structure diagram of another display panel according to an embodiment of the present invention, in this embodiment, the plurality of first conductive pads 10 at least includes a plurality of first sub-pads 101 and a plurality of second sub-pads 102, and in the first direction X, the first sub-pads 101 are located on one side of the second sub-pads 102;
in the second direction Y, a distance H1 from the first sub-pad 101 to the first wire K is smaller than a distance H2 from the second sub-pad 102 to the first wire K.
The present embodiment further explains that in order to realize a narrower frame, it may be designed that some of the first conductive pads 10 are closer to the second conductive pads 10, that is, in the second direction Y, the distance H1 from the first sub-pad 101 to the first wire K is smaller than the distance H2 from the second sub-pad 102 to the first wire K. In the display panel with the narrow-frame structure, in the second direction Y, the distance H1 from the first sub-pad 101 in the first conductive pad 10 to the first connection line K is smaller than the distance H2 from the second sub-pad 102 in the first conductive pad 10 to the first connection line K, so that the space between the first conductive pad 10 and the second conductive pad 10 is reduced, the test circuit 30 which is not beneficial to large-area layout is arranged, and the test requirement cannot be met, therefore, in the display panel 000 with the narrow-frame structure, the first test circuit 301 and the second test circuit 302 which are arranged in the test circuit 30 are both arranged in the space M on two opposite sides of the second binding area BA2, so that the narrow-frame requirement is met, and the test requirement is also met.
It should be noted that, in the second direction Y of the present embodiment, the distance H1 from the first sub-pad 101 to the first connection line K is smaller than the distance H2 from the second sub-pad 102 to the first connection line K, and as shown in fig. 7, the distances H1 from all the first sub-pads 101 to the first connection line K are equal and are smaller than the distance H2 from the second sub-pad 102 to the first connection line K; as shown in fig. 8, fig. 8 is a schematic plan view of another display panel according to an embodiment of the present invention, in which the distance H1 from the first sub-pad 101 to the first connection line K is gradually decreased in the second direction Y along the direction away from the second sub-pad 102, but the distance H2 from the first sub-pad 101 closest to the second sub-pad 102 to the first connection line K is still smaller than the distance H2 from the second sub-pad 102 to the first connection line K; as shown in fig. 9, fig. 9 is a schematic plan view of another display panel according to an embodiment of the present invention, in a direction away from the second sub-pad 102, in the second direction Y, first, a distance H1 from a part of the first sub-pad 101 to the first connection line K is gradually decreased, and then distances H1 from the remaining part of the first sub-pad 101 to the first connection line K are all equal, but the distance from all the first sub-pads 101 to the first connection line K is smaller than the distance H2 from the second sub-pad 102 to the first connection line K. The distances H2 from the second sub-pads 102 to the first connection K may be the same, or a part of the second sub-pads 102 may be far from the first connection K, and another part of the second sub-pads 102 may be near to the first connection K (not shown). The arrangement of the first conductive pads 10 may be various, and this embodiment is not particularly limited, and it is only required that in the second direction Y, the distance H1 from the first sub-pad 101 to the first connection line K is smaller than the distance H2 from the second sub-pad 102 to the first connection line K.
It should be further noted that, in fig. 7 to 9 of this embodiment, a plurality of first sub-pads 101 and a plurality of second sub-pads 102 of the plurality of first conductive pads 10 are both in a structure of being arranged in a row, optionally, the plurality of first conductive pads 10 sequentially arranged along the first direction X may also be divided into two or more rows, and the two or more rows of first conductive pads 10 are sequentially arranged in the second direction Y, that is, the arrangement of the plurality of first sub-pads 101 and the plurality of second sub-pads 102 may also be the second conductive pads 20 shown in fig. 4 in the above embodiment, the first conductive pads 10 adjacent to each other in the first direction X are alternately arranged in the second direction Y (not shown in the drawing). At this time, in the second direction Y, the distance from the first sub-pad 101 to the first connection line K refers to the distance from the first sub-pad 101 to the first connection line K in the same row of the first conductive pads 10, and the distance from the second sub-pad 102 to the first connection line K refers to the distance from the second sub-pad 102 to the first connection line K in the same row of the first conductive pads 10.
Optionally, referring to fig. 10, fig. 10 is a schematic plan view of another display panel according to an embodiment of the present invention, in this embodiment, a fan-out area FA is disposed on a side of the first bonding area BA1 close to the display area AA, a plurality of fan-out leads 50 are disposed in the fan-out area FA, and the data lines S in the display area AA are electrically connected to the first conductive pads 10 in the bonding area BA through the fan-out leads 50, wherein a first fan-out lead 501 is electrically connected to the first sub-pad 101, and a second fan-out lead 502 is electrically connected to the second sub-pad 102, and a distance H1 from the first sub-pad 101 to the first connection line K in the second direction Y along a direction away from the second sub-pad 102 is gradually reduced, but a distance from the first sub-pad 101 closest to the second sub-pad 102 to the first connection line K is still smaller than a distance H2 from the second sub-pad 102 to the first connection line K, so that the first lead 501 connected to the first sub-pad 101 is bent to a side away from the display area AA as far as possible, further, the width of the fan-out area FA in the second direction Y is advantageously reduced, that is, a narrower frame can be further realized.
In some optional embodiments, referring to fig. 11, fig. 11 is a schematic plan view illustrating another display panel according to an embodiment of the present invention, in this embodiment, the testing circuit 30 further includes a third testing circuit 303, and in the second direction Y, a forward projection of the third testing circuit 303 to the light-emitting surface of the display panel 000 is located between the second sub-pad 102 and the second conductive pad 20.
The present embodiment further explains that, in the second direction Y, the distance H1 from the first sub-pad 101 in the first conductive pad 10 to the first wire K is smaller than the distance H2 from the second sub-pad 102 in the first conductive pad 10 to the first wire K, and although the distance H1 from the first sub-pad 101 to the first wire K is smaller, that is, the space between the first sub-pad 101 and the second conductive pad 20 is limited, the space between the second sub-pad 102 and the second conductive pad 20 can be used to increase the third test circuit 303 for laying the test circuit 30, thereby further increasing the overall layout area of the test circuit 30, and being beneficial to further improving the test effect of the test circuit 30 while not affecting the realization of a narrow bezel.
In some alternative embodiments, please refer to fig. 11 and 12 in combination, fig. 12 is a schematic diagram of a partial enlarged structure of fig. 11, in this embodiment, the first test circuit 301 and the third test circuit 301 are electrically connected through at least two first signal lines 401, and an extending direction of the first signal lines 401 is parallel to the arrangement direction 101L of the first sub-pads 101 (as shown in fig. 12);
the second test circuit 302 and the third test circuit 303 are electrically connected to each other through at least two second signal lines 402.
This embodiment further explains that in the arrangement of the first conductive pad 10, in the second direction Y, the distance H1 from the first sub-pad 101 in the first conductive pad 10 to the first wire K is smaller than the distance H2 from the second sub-pad 102 in the first conductive pad 10 to the first wire K, and in the direction away from the second sub-pad 102, the distance H1 from the first sub-pad 101 to the first wire K in the second direction Y is gradually reduced, but the distance from the first sub-pad 101 closest to the second sub-pad 102 to the first wire K is also smaller than the distance H2 from the second sub-pad 102 to the first wire K, and at this time, the third test circuit 303 in the test circuit 30 may be disposed between the second sub-pad 102 and the second conductive pad 20 which are spatially larger, since the first test circuit 301, the second test circuit 302, and the third test circuit 303 need to be electrically connected to each other so that the test signals of the entire panel are uniform, therefore, the first test circuit 301 and the third test circuit 301 of the embodiment are electrically connected through at least two first signal lines 401, and the extending direction of the first signal lines 401 is parallel to the arrangement direction 101L of the first sub-pads 101, even if the extending direction of the first signal lines 401 is consistent with the arrangement direction 101L of the first sub-pads 101, the layout structure of the bonding area BA is further facilitated to be rationalized. The second test circuit 302 and the third test circuit 303 are electrically connected through at least two second signal lines 402, the extending direction of the second signal lines 402 can be flexibly set, and only the second test circuit 302 and the third test circuit 303 need to be electrically connected.
In some optional embodiments, please refer to fig. 13, fig. 13 is a schematic plan view illustrating a planar structure of another display panel according to an embodiment of the present invention, in this embodiment, the plurality of first conductive pads 10 at least includes a plurality of third sub-pads 103, a plurality of fourth sub-pads 104, and a plurality of fifth sub-pads 105, and in the first direction X, the third sub-pads 103 and the fifth sub-pads 105 are respectively located on two opposite sides of the fourth sub-pads 104;
in the second direction Y, the distance from the third sub-pad 103 to the first wire K is a, the distance from the fourth sub-pad to the first wire is B, and the distance from the fifth sub-pad to the first wire is C, where a < B and C < B.
The embodiment further explains that in order to realize a narrower frame, it may be designed that a plurality of third sub-pads 103 and a plurality of fifth sub-pads 105 in the first conductive pad 10 are close to each other in a direction close to the second conductive pad 10, and in the first direction X, the third sub-pads 103 and the fifth sub-pads 105 are respectively located on two opposite sides of the fourth sub-pad 104, that is, part of the sub-pads 104 on two sides in the first conductive pad 10 are close to each other in a direction close to the second conductive pad 10, so as to form a structure in which an OLB (Outer Lead Bonding) region is sunken. When the display panel normally displays, a Chip On Film (COF) needs to be connected to the outer lead bonding region of the panel through a lead, so that the driving signal integrated on the COF is conducted to the panel through the OLB region. In the second direction Y of the present embodiment, a distance a from the third sub-pad 103 to the first connection line K is smaller than a distance B from the fourth sub-pad 104 to the first connection line K, and a distance C from the fifth sub-pad 105 to the first connection line K is smaller than a distance B from the fourth sub-pad 104 to the first connection line K. Optionally, in the second direction Y, a distance a from the third sub-pad 103 to the first connection line K is equal to a distance B from the fifth sub-pad 105 to the first connection line K, that is, the third sub-pad 103 and the fifth sub-pad 105 are symmetrical to each other with respect to a central axis of the fourth sub-pad 104 extending along the second direction Y, and the third sub-pad 103 and the fifth sub-pad 105 are also equal in number, so that sizes of spaces M on two sides of the second bonding area BA2 are substantially the same, when the display panel is cut, it is beneficial to achieving that distances from the first test circuit 301 and the second test circuit 302 to a cutting edge are equal, and further avoiding a risk of trace damage caused by abnormal cutting due to uneven first test circuit 301 and second test circuit 302.
Optionally, in the direction away from the fourth sub-pad 104, the distance a from the third sub-pad 103 to the first connection line K in the second direction Y gradually decreases, but the distance from the third sub-pad 103 closest to the fourth sub-pad 104 to the first connection line K is still smaller than the distance B from the fourth sub-pad 104 to the first connection line K; and the distance C from the fifth sub-pad 105 to the first link K in the second direction Y is gradually decreased in a direction away from the fourth sub-pad 104, but the distance from the fifth sub-pad 105 closest to the fourth sub-pad 104 to the first link K is still smaller than the distance B from the fourth sub-pad 104 to the first link K (as shown in fig. 13). The sinking structure of the OLB area in the non-display area NA is beneficial to reducing the width of the fan-out area in the second direction Y, and a narrower frame is realized. Because the space between the third sub-pad 103 and the first connection line K is reduced, the space between the fifth sub-pad 105 and the first connection line K is also reduced, which is not beneficial to laying a large-area test circuit 30, and the test requirements cannot be met, in the display panel 000 with the structure, the first test circuit 301 and the second test circuit 302 in the test circuit 30 are both arranged in the space M on the two opposite sides of the second binding area BA2, so that the narrow-frame requirement is further met, and the test requirements are also met.
It should be noted that, in fig. 13 of this embodiment, a plurality of third sub-pads 103, a plurality of fourth sub-pads 104, and a plurality of fifth sub-pads 105 of the plurality of first conductive pads 10 are all configured in a row, alternatively, the plurality of first conductive pads 10 may also be divided into two or more rows, and the two or more rows of first conductive pads 10 are sequentially arranged in the second direction Y, that is, the arrangement of the plurality of third sub-pads 103, the plurality of fourth sub-pads 104, and the plurality of fifth sub-pads 105 may also be the second conductive pads 20 shown in fig. 4 in the above embodiment, where the first conductive pads 10 adjacent to each other in the first direction X are arranged in a staggered manner in the second direction Y (not shown in the drawing). At this time, in the second direction Y, a distance from the third sub-pad 103 to the first connection line K refers to a distance from the third sub-pad 103 to the first connection line K in the same row of the first conductive pads 10, a distance from the fourth sub-pad 104 to the first connection line K refers to a distance from the fourth sub-pad 104 to the first connection line K in the same row of the first conductive pads 10, and a distance from the fifth sub-pad 105 to the first connection line K refers to a distance from the fifth sub-pad 105 to the first connection line K in the same row of the first conductive pads 10.
In some optional embodiments, please refer to fig. 14 and fig. 15, fig. 14 is a schematic plan view of another display panel according to an embodiment of the present invention, and fig. 15 is a schematic partial enlarged view of fig. 14, in this embodiment, along a direction away from the fourth sub-pad 104, in the second direction Y, first, a distance from a part of the third sub-pad 103 to the first connection line K gradually decreases, and then distances from the remaining part of the third sub-pad 103 to the first connection line K are all equal, but a distance from all the third sub-pads 103 to the first connection line K is still smaller than a distance B from the fourth sub-pad 104 to the first connection line K; in the direction away from the fourth sub-pad 104, in the second direction Y, first, the distance from a part of the fifth sub-pad 105 to the first connection line K gradually decreases, and then the distances from the remaining part of the fifth sub-pad 105 to the first connection line K are all equal, but the distance from all the fifth sub-pads 105 to the first connection line K is still smaller than the distance B from the fourth sub-pad 104 to the first connection line K. The distances B of the fourth sub-pads 104 to the first connection line K may all be the same.
The first test circuit 301 and the second test circuit 302 are disposed in the space M at two opposite sides of the second bonding area BA2, and the first test circuit 301 and the second test circuit 302 are electrically connected to each other through at least two third signal lines 403. The third signal line 403 includes a first section 4031, a second section 4032, and a third section 4033 connected in sequence, one end of the first section 4031 is connected to the first test circuit 301, and the other end is connected to the second section 4032; one end of the third segment 4033 is connected to the second test circuit 302, and the other end is connected to the second segment 4032; the extending direction of the first segment 4031 is parallel to the arrangement direction 103L of the third sub-pads 103, the second segment 4032 extends along the first direction X, and the third segment 4033 is parallel to the arrangement direction 105L of the fifth sub-pads 105 (as shown in fig. 15).
The first test circuit 301 and the second test circuit 302 of this embodiment need to be electrically connected to each other, so that the test signals of the entire panel are consistent, therefore, the first test circuit 301 and the second test circuit 302 of this embodiment are electrically connected to each other through at least two third signal lines 403, the extending direction of the first section 4031 of the third signal line 403 is parallel to the arrangement direction 103L of the third sub-pad 103, the second section 4032 is extended along the first direction X, and the third section 4033 is parallel to the arrangement direction 105L of the fifth sub-pad 105, so that the arrangement manner of the third signal line 403 can be matched with the arrangement manner of the first conductive pad 10, which is beneficial to rationalizing the layout structure of the bonding area BA.
In some optional embodiments, please refer to fig. 16 and 17, fig. 16 is a schematic plan view of another display panel according to an embodiment of the present invention, and fig. 17 is a schematic partial enlarged view of fig. 16, in this embodiment, along a direction away from the fourth sub-pad 104, in the second direction Y, first, a distance from a part of the third sub-pad 103 to the first connection line K gradually decreases, and then, distances from the remaining part of the third sub-pad 103 to the first connection line K are all equal, but a distance from all the third sub-pads 103 to the first connection line K is still smaller than a distance B from the fourth sub-pad 104 to the first connection line K; in the direction away from the fourth sub-pad 104, in the second direction Y, first, the distance from a part of the fifth sub-pad 105 to the first connection line K gradually decreases, and then the distances from the remaining part of the fifth sub-pad 105 to the first connection line K are all equal, but the distance from all the fifth sub-pads 105 to the first connection line K is still smaller than the distance B from the fourth sub-pad 104 to the first connection line K. The distances B of the fourth sub-pads 104 to the first connection line K may all be the same.
The test circuit 30 further includes a fourth test circuit 304, and a forward projection of the fourth test circuit 304 to the light-emitting surface of the display panel 000 in the second direction Y is located between the fourth sub-pad 104 and the second conductive pad 20. The first test circuit 301 and the fourth test circuit 304 are electrically connected through at least two fourth signal lines 404, and the extending direction of the fourth signal lines 404 is parallel to the arrangement direction 103L of the third sub-pads 103; the second test circuit 302 and the fourth test circuit 304 are electrically connected by at least two fifth signal lines 405, and the extending direction of the fifth signal lines 405 is parallel to the arrangement direction 105L of the fifth sub-pads 105 (as shown in fig. 17).
In the second direction Y of the present embodiment, a distance from the third sub-pad 103 in the first conductive pad 10 to the first connection line K is smaller than a distance B from the fourth sub-pad 104 in the first conductive pad 10 to the first connection line K, and a distance from the fifth sub-pad 105 in the first conductive pad 10 to the first connection line K is smaller than a distance B from the fourth sub-pad 104 in the first conductive pad 10 to the first connection line K, although distances from the third sub-pad 103 and the fifth sub-pad 105 to the first connection line K are both smaller at this time, the fourth test circuit 304 for laying the test circuit 30 may be increased by using a space between the fourth sub-pad 104 and the second conductive pad 20, so as to further increase the overall laying area of the test circuit 30, and facilitate further improving the test effect of the test circuit 30 while not affecting the implementation of a narrow frame. The first test circuit 301 and the fourth test circuit 304 are electrically connected through at least two fourth signal lines 404, and the extending direction of the fourth signal lines 404 is parallel to the arrangement direction 103L of the third sub-pads 103; the second test circuit 302 and the fourth test circuit 304 are electrically connected through at least two fifth signal lines 405, and the extending direction of the fifth signal lines 405 is parallel to the arrangement direction 105L of the fifth sub-pads 105, so that the arrangement mode of the fourth signal lines 404 and the fifth signal lines 405 can be matched with the arrangement mode of the first conductive pads 10, which is beneficial to rationalizing the layout structure of the bonding area BA.
In some optional embodiments, please refer to fig. 18, fig. 18 is a schematic plane structure diagram of another display panel according to the embodiment of the present invention, in the embodiment, the non-display area NA further includes a first non-display area NA1, and in the second direction Y, the first non-display area NA1 is located on a side of the display area AA away from the bonding area BA;
the test circuit 30 further includes a fifth test circuit 305, and a forward projection of the fifth test circuit 305 to the light emitting surface of the display panel 000 is located within the first non-display area NA 1.
The non-display area NA of the display panel of this embodiment further includes a first non-display area NA1, in the second direction Y, the first non-display area NA1 is located on a side of the display area AA away from the bonding area BA, the test circuit 30 further includes a fifth test circuit 305, and a forward projection of the fifth test circuit 305 to the light-emitting surface of the display panel 000 is located within a range of the first non-display area NA1, so that the overall layout area of the test circuit 30 can be further increased, and the test effect of the test circuit 30 can be further improved without affecting the implementation of a narrow frame. Alternatively, the fifth test circuit 305 in the range of the first non-display area NA1 in the present embodiment, the first test circuit 301 and the like disposed opposite thereto in the above embodiments may be electrically connected to each other through a peripheral circuit, so as to achieve the effect of connecting the test circuits 30 to each other.
Optionally, referring to fig. 19, fig. 19 is a schematic plane structure diagram of another display panel according to an embodiment of the present invention, in which the fifth test circuit 305 includes two sub-test circuits 3051, the two sub-test circuits 3051 are electrically connected through at least two sixth signal lines 406, and the sixth signal lines 406 extend along the first direction X.
The fifth testing circuit 305 includes two sub-testing circuits 3051 electrically connected to each other through at least two sixth signal lines 406, and the sixth signal lines 406 extend along the first direction X, so that the two sub-testing circuits 3051 can be electrically connected to each other, and the sixth signal lines 406 can be arranged in a manner matching the shape of the first non-display area NA, which is beneficial to rationalizing the layout structure of the entire display panel 000.
In some optional embodiments, referring to fig. 20, fig. 20 is a schematic plan view of another display panel according to an embodiment of the present invention (for clarity, the structure of the test unit 300 is illustrated, fig. 20 of the present embodiment only schematically illustrates the number of the test units 300 in the test circuit 30, and in a specific implementation, the number may be set according to actual requirements), in the present embodiment, the test circuit 30 includes a plurality of test units 300, and each test unit 300 includes a plurality of electrically connected switch transistors 3001.
In the embodiment, the number of the signal lines 40 is two, one of the two signal lines 40 is a switch control signal line 4001, which is electrically connected to the gate of the switch transistor 3001 and is used for controlling whether a test detection signal is input to a pixel (not shown) in the display area AA, i.e., for controlling whether the test circuit 30 is turned on, and the other signal line 4002 is a test data signal line which is electrically connected to one of the source and the drain of the switch transistor 3001 and is used for providing a test data voltage signal to the pixel in the display area AA and lighting the pixel for testing during a test operation, and the other of the source and the drain of the switch transistor 3001 may be electrically connected to a test data signal source to implement a function of inputting the test data signal to the display panel for a screen lighting test.
In some optional embodiments, with reference to fig. 20, in the present embodiment, the signal line 40, the scan line G, and the gate of the switch transistor 3001 are disposed in the same layer, and the signal line 40 is electrically connected to any one of the source or the drain of the switch transistor 3001 through a via.
This embodiment further explains that in the manufacturing process of the display panel 000, the signal line 40, the scan line G, and the gate of the switching transistor 3001 can be manufactured by the same material and the same process on the same layer, which is beneficial to reducing the process steps and improving the manufacturing efficiency. Since the source or the drain of the general switch transistor 3001 is disposed on the same layer as the data line S, and the film layer where the signal line 40 and the data line S are disposed is not the same layer, the signal line 40 on the different layer may be connected to any one of the source or the drain of the switch transistor 3001 through the via hole to realize electrical connection, and then the test signal input to the signal line 40 is transmitted to the display area AA of the display panel 000 through the switch transistor 3001, so as to realize the test function of the test circuit 30.
In some optional embodiments, please refer to fig. 21, fig. 21 is a schematic plan view of a display device according to an embodiment of the present invention, and the display device 111 according to the embodiment includes the display panel 000 according to the embodiment of the present invention. The embodiment of fig. 21 is only an example of a mobile phone, and the display device 111 is described, it is understood that the display device 111 provided in the embodiment of the present invention may be another display device 111 having a display function, such as a computer, a television, and a vehicle-mounted display device, and the present invention is not limited thereto. The display device 111 provided in the embodiment of the present invention has the beneficial effects of the display panel 000 provided in the embodiment of the present invention, and specific reference may be made to the specific description of the display panel 000 in the above embodiments, which is not described herein again.
As can be seen from the above embodiments, the display panel and the display device provided by the present invention at least achieve the following beneficial effects:
the binding region of the display panel comprises a first binding region and a second binding region which are sequentially arranged along a second direction, and the second binding region is positioned on one side of the first binding region, which is far away from the display region, in the second direction. The first binding region comprises a plurality of first conductive bonding pads, the first conductive bonding pads can be output conductive bonding pads, the second binding region comprises a plurality of second conductive bonding pads, the second conductive bonding pads can be input conductive bonding pads, the second conductive bonding pads are used for being bound and electrically connected with input signal ends of the driving circuit in a one-to-one correspondence mode, driving signals are input to the driving circuit from the second conductive bonding pads, the first conductive bonding pads are used for being bound and electrically connected with output signal ends of the driving circuit in a one-to-one correspondence mode, the second conductive bonding pads can be input to driving signals on the driving circuit, the driving signals are output to the display panel from the first conductive bonding pads, and driving signals for realizing display functions are provided for the display panel. The design test circuit at least comprises a first test circuit, and in the second direction, the orthographic projection of the first test circuit to the light-emitting surface of the display panel is positioned on one side of the first binding area, which is far away from the display area; in the first direction, the orthographic projection of the first test circuit to the light-emitting surface of the display panel is located on one side of the second binding area, thereby the empty space formed on at least one side of the second binding area is well utilized, the first test circuit in the test circuit is arranged in the space, the space between the first binding area and the second binding area is favorably reduced, a narrower frame is realized, enough space can be provided for the test circuit, the test circuit with a large enough area is ensured to be arranged as much as possible, the delay of the screen in the test process when being lightened is avoided, the efficiency of detecting the defects of a production line is improved, the narrower frame is realized while the test requirements are met.
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 (17)
1. A display panel, comprising: a display area and a non-display area disposed around the display area; a plurality of scan lines extending in a first direction and a plurality of data lines extending in a second direction, the first direction and the second direction intersecting;
the non-display region includes a bonding region including a first bonding region including a plurality of first conductive pads and a second bonding region including a plurality of second conductive pads; in the second direction, the second binding region is positioned on one side of the first binding region far away from the display region;
the non-display area of the display panel comprises a test circuit, the test circuit at least comprises a first test circuit, and in the second direction, the orthographic projection of the first test circuit to the light-emitting surface of the display panel is positioned on one side, away from the display area, of the first binding area; in the first direction, the orthographic projection of the first test circuit to the light-emitting surface of the display panel is positioned on one side of the second binding area;
the test circuit further comprises a second test circuit, and orthographic projections of the second test circuit and the first test circuit to the light-emitting surface of the display panel are respectively positioned at two opposite sides of the second binding area;
the length of the second bonding region where the second conductive pad is located is shorter than the length of the first bonding region where the first conductive pad is located along the first direction.
2. The display panel according to claim 1, wherein the first test circuit and the second test circuit are electrically connected to each other through at least two signal lines.
3. The display panel according to claim 1, wherein in the second direction, each of the second conductive pads comprises a vertex or an edge near one side of the first conductive pad, wherein a line connecting at least some of the vertices or edges is a first line, and the first line extends along the first direction.
4. The display panel according to claim 3, wherein the first conductive pads are arranged in sequence along the first direction, and the second conductive pads are arranged in sequence along the first direction;
in the second direction, the distances from the first conductive pad to the first connecting line are all equal.
5. The display panel according to claim 3, wherein the plurality of first conductive pads includes at least a plurality of first sub-pads and a plurality of second sub-pads, the first sub-pads being located on one side of the second sub-pads in the first direction;
in the second direction, the distance from the first sub-pad to the first connecting line is smaller than the distance from the second sub-pad to the first connecting line.
6. The display panel of claim 5, wherein the testing circuit further comprises a third testing circuit, and wherein an orthographic projection of the third testing circuit to the light emitting surface of the display panel in the second direction is located between the second sub-pad and the second conductive pad.
7. The display panel according to claim 6, wherein the first test circuit and the third test circuit are electrically connected by at least two first signal lines, and an extending direction of the first signal lines is parallel to an arrangement direction of the first sub-pads;
the second test circuit and the third test circuit are electrically connected through at least two second signal lines.
8. The display panel according to claim 3, wherein the plurality of first conductive pads comprises at least a plurality of third sub-pads, a plurality of fourth sub-pads, and a plurality of fifth sub-pads, and the third sub-pads and the fifth sub-pads are respectively located on opposite sides of the fourth sub-pads in the first direction;
in the second direction, a distance from the third sub-pad to the first connection line is a, a distance from the fourth sub-pad to the first connection line is B, and a distance from the fifth sub-pad to the first connection line is C, wherein a is less than B and C is less than B.
9. The display panel according to claim 8, wherein a distance from the third sub-pad to the first wire in the second direction is equal to a distance from the fifth sub-pad to the first wire.
10. The display panel according to claim 8, wherein the first test circuit and the second test circuit are electrically connected to each other through at least two third signal lines;
the third signal wire comprises a first section, a second section and a third section which are sequentially connected, one end of the first section is connected with the first test circuit, and the other end of the first section is connected with the second section; one end of the third section is connected with the second test circuit, and the other end of the third section is connected with the second section;
the extending direction of the first section is parallel to the arrangement direction of the third sub-bonding pads, the second section extends along the first direction, and the third section is parallel to the arrangement direction of the fifth sub-bonding pads.
11. The display panel of claim 8, wherein the test circuit further comprises a fourth test circuit, and wherein an orthographic projection of the fourth test circuit onto the light emitting surface of the display panel in the second direction is located between the fourth sub-pad and the second conductive pad.
12. The display panel according to claim 11, wherein the first test circuit and the fourth test circuit are electrically connected by at least two fourth signal lines, and an extending direction of the fourth signal lines is parallel to an arrangement direction of the third sub-pads; the second test circuit and the fourth test circuit are electrically connected through at least two fifth signal lines, and the extending direction of the fifth signal lines is parallel to the arrangement direction of the fifth sub-pads.
13. The display panel according to claim 1, wherein the non-display area further comprises a first non-display area, and the first non-display area is located on a side of the display area away from the bonding area in the second direction;
the test circuit further comprises a fifth test circuit, and the orthographic projection of the fifth test circuit to the light-emitting surface of the display panel is located in the range of the first non-display area.
14. The display panel according to claim 13, wherein the fifth test circuit comprises two sub-test circuits electrically connected to each other by at least two sixth signal lines extending along the first direction.
15. The display panel according to claim 2,
the test circuit comprises a plurality of test cells, each of the test cells comprising a plurality of electrically connected switching transistors;
the number of the signal lines is two, and one of the two signal lines is electrically connected to the gate of the switching transistor, and the other signal line is electrically connected to either the source or the drain of the switching transistor.
16. The display panel according to claim 15, wherein the signal line, the scan line, and the gate of the switching transistor are disposed in the same layer, and the signal line is electrically connected to any one of a source or a drain of the switching transistor through a via.
17. A display device characterized by comprising the display panel according to any one of claims 1 to 16.
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| CN111883034B (en) * | 2020-07-30 | 2022-10-25 | 昆山国显光电有限公司 | Screen detection circuit and display panel |
| CN112650417B (en) * | 2021-01-11 | 2023-02-24 | 武汉华星光电半导体显示技术有限公司 | Touch display panel and touch display device |
| CN113077726B (en) * | 2021-03-23 | 2022-06-10 | 深圳市华星光电半导体显示技术有限公司 | Display panel and preparation method thereof |
| CN115188284B (en) * | 2022-06-06 | 2024-02-09 | 安徽精卓光显技术有限责任公司 | Display screen manufacturing method and electronic equipment |
| WO2024065412A1 (en) * | 2022-09-29 | 2024-04-04 | 京东方科技集团股份有限公司 | Chip on film and display device |
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| KR20080049912A (en) * | 2006-12-01 | 2008-06-05 | 엘지디스플레이 주식회사 | Driving ic and display apparatus having the same |
| JP2017062374A (en) * | 2015-09-25 | 2017-03-30 | 株式会社Ｊｏｌｅｄ | Display panel and display |
| CN106847864A (en) * | 2017-01-09 | 2017-06-13 | 张帆 | A kind of narrow frame touch-control display panel and display device and preparation method thereof |
| CN109448616A (en) * | 2018-12-21 | 2019-03-08 | 厦门天马微电子有限公司 | Display panel and display device |
| CN109491154A (en) * | 2018-12-29 | 2019-03-19 | 厦门天马微电子有限公司 | Display panel, display device and its manufacturing method |
| CN110568683A (en) * | 2019-09-23 | 2019-12-13 | 上海中航光电子有限公司 | Array substrate, display device and test method thereof |
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