CN115483229B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN115483229B CN115483229B CN202211193269.7A CN202211193269A CN115483229B CN 115483229 B CN115483229 B CN 115483229B CN 202211193269 A CN202211193269 A CN 202211193269A CN 115483229 B CN115483229 B CN 115483229B
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- 230000008054 signal transmission Effects 0.000 claims abstract description 237
- 239000002245 particle Substances 0.000 claims description 65
- 239000000853 adhesive Substances 0.000 claims description 21
- 230000001070 adhesive effect Effects 0.000 claims description 21
- 239000000758 substrate Substances 0.000 claims description 15
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 16
- 238000001125 extrusion Methods 0.000 description 13
- 239000003292 glue Substances 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/124—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a display panel and a display device, the display panel includes at least two signal transmission structures including a plurality of signal transmission terminals. The display panel further comprises at least one groove in at least part of the signal transmission terminals and a conductive structure arranged in the groove, and the groove penetrates through at least part of the signal transmission terminals along the thickness direction of the display panel. The signal transmission terminals in the two signal transmission structures are electrically connected by the conductive structure. Therefore, by arranging the grooves on at least part of the signal transmission terminals in at least two signal transmission structures and arranging the conductive structures in the grooves, the impedance of the signal transmission structures is reduced, and the display effect is improved.
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
In the existing display structure, the bonding pads of different signal transmission structures need to be electrically connected in alignment. Because the surface of the bonding pad is smooth, conductive particles can slide to a non-bonding pad area on the surface of the bonding pad during bonding, so that different bonding pads are abnormal in electric connection or larger in resistance during connection, signal transmission is affected, and abnormal display is caused.
Disclosure of Invention
The embodiment of the invention provides a display panel and a display device, which are used for reducing the impedance of a signal transmission terminal between two signal transmission structures and improving the display effect of the display panel.
In a first aspect, an embodiment of the present invention provides a display panel, including:
At least two signal transmission structures, the signal transmission structures including a plurality of signal transmission terminals;
The display panel further comprises at least one groove positioned in at least part of the signal transmission terminals and a conductive structure arranged in the groove; the groove penetrates at least part of the signal transmission terminals along the thickness direction of the display panel;
The signal transmission terminals in the two signal transmission structures are electrically connected by the conductive structure.
In a second aspect, an embodiment of the present invention provides a display device, including the display panel according to any one of the first aspects.
The display panel provided by the embodiment of the invention comprises at least two signal transmission structures, wherein each signal transmission structure comprises a plurality of signal transmission terminals; the display panel further includes at least one trench in at least a portion of the signal transmission terminals and a conductive structure disposed in the trench. The signal transmission terminals in the two signal transmission structures are electrically connected through the conductive structure, in the technical scheme, the grooves are formed in at least part of the signal transmission terminals, and the conductive structures are arranged in the grooves, so that the conductive structures can be concentrated in the grooves, the number of the conductive structures between the two signal transmission terminals is increased, the impedance of the signal transmission terminals in connection is reduced, and good electrical contact performance is realized. The problems of the prior art that the signal transmission terminal has low conductive particle utilization rate, high impedance after the signal transmission terminal, high impedance in the signal transmission process and abnormal display are solved.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1 taken along the direction A-A';
FIG. 3 is a schematic view of another cross-sectional structure along the direction A-A' of FIG. 1;
FIG. 4 is a schematic view of a further cross-sectional structure taken along the line A-A' of FIG. 1;
FIG. 5 is a schematic view of a further cross-sectional structure taken along the line A-A' of FIG. 1;
FIG. 6 is a schematic view of a further cross-sectional structure taken along the line A-A' of FIG. 1;
FIG. 7 is a schematic view of a further cross-sectional structure taken along the line A-A' of FIG. 1;
FIG. 8 is a schematic view of a further cross-sectional structure taken along the direction A-A' of FIG. 1;
FIG. 9 is a schematic view of a further cross-sectional structure taken along the line A-A' of FIG. 1;
Fig. 10 is a top view of a display panel according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be fully described below by way of specific embodiments with reference to the accompanying drawings in the examples of the present invention. It is apparent that the described embodiments are some, but not all, embodiments of the present invention, and that all other embodiments, which a person of ordinary skill in the art would obtain without making inventive efforts, are within the scope of this invention.
Fig. 1 is a schematic structural view of a display panel according to an embodiment of the present invention, fig. 2 is a schematic structural view of a cross section along A-A ' direction of fig. 1, fig. 3 is a schematic structural view of another cross section along A-A ' direction of fig. 1, fig. 4 is a schematic structural view of another cross section along A-A ' direction of fig. 1, and referring to fig. 1, fig. 2, fig. 3 and fig. 4, a display panel 1 according to an embodiment of the present invention includes: at least two signal transmission structures 10, the signal transmission structures 10 including a plurality of signal transmission terminals 11; the display panel 1 further comprises at least one trench 110 in at least part of the signal transmission terminals 11 and a conductive structure 12 disposed in the trench 110; along the thickness direction Y of the display panel 1, the groove 110 penetrates at least part of the signal transmission terminal 11; the signal transmission terminals 11 in the two signal transmission structures 10 are electrically connected by the conductive structure 12.
The display panel 1 includes a plurality of different signal transmission structures 10, the signal transmission structures 10 include a plurality of signal transmission terminals 11, and when signal transmission is performed between the different signal transmission structures 10, corresponding signal transmission can be realized through alignment connection between the corresponding signal transmission terminals 11. In the process of connecting the signal transmission terminals 11, an anisotropic conductive adhesive is generally used, the anisotropic conductive adhesive is placed between the signal transmission structures 10 to be connected, and then the anisotropic conductive adhesive is pressurized and heated, so that stable and reliable mechanical and electrical connection between the signal transmission structures 10 is formed, and the thermal compression Bonding process is a Bonding process.
As described above, when binding between different signal transmission structures 10, it is necessary to bind the signal transmission terminals 11 by an anisotropic conductive adhesive, but since the surface of the signal transmission terminals 11 is smooth, the conductive structure 12 slides to a non-signal transmission terminal area at the time of binding, and the conductive structure 12 cannot be concentrated more in the signal transmission terminal area, resulting in a high connection impedance between the signal transmission terminals.
Therefore, in the embodiment of the present invention, the at least two signal transmission structures 10 include a plurality of signal transmission terminals 11, where the plurality of signal transmission terminals 11 are respectively located at one side of the at least two signal transmission structures 10 corresponding to each other (to be bound), so that the at least two signal transmission structures 10 are bound and connected through the corresponding plurality of signal transmission terminals 11, and further, by providing at least one groove 110 on at least part of the signal transmission terminals 11, the groove 110 penetrates through at least part of the signal transmission terminals 11 along the thickness direction Y of the display panel 1, and the conductive structure 12 is provided in the groove 110, the movement track of the conductive structure 12 is defined by the groove 110, so that the conductive structure 12 is prevented from sliding out of the area where the signal transmission terminals 11 are located, the number of conductive particles 121 between the two signal transmission terminals 11 is increased, and then, in the subsequent binding extrusion process, the corresponding two signal transmission terminals 11 can fully crush the conductive particles 121 in the groove 110, thereby realizing good electrical contact performance, further reducing connection impedance between the signal transmission terminals 11, reducing loss in the signal transmission process, and improving the display accuracy of the display panel.
It should be noted that, fig. 1 illustrates two signal transmission structures 10 as a substrate board and a flexible circuit board, respectively, but the present invention is not limited thereto, and other arrangements may be used in other embodiments. The signal transmission terminals 11 located on the two signal transmission structures 10 may be the same or different in size, and are shown by two dashed boxes of different sizes in fig. 1 for illustrating the positional relationship of the two signal transmission terminals 11.
It should be noted that, at least a part of the signal transmission terminals 11 is provided with at least one groove 110, which may be understood that at least a part of the binding surfaces of the signal transmission terminals 11 are provided with one groove 110, and the binding surfaces may be understood as surfaces that need to be bound and connected with other signal output terminals. Specifically, as shown in fig. 2 and 3, in two signal transmission structures 10 that need to be connected in a binding manner, a groove 110 may be disposed on a signal transmission terminal 11 of one signal transmission structure 10, an opening of the groove 110 faces the other signal transmission structure, and a conductive structure 12 is disposed on the groove 110; or as shown in fig. 4, grooves 110 may be disposed on the signal transmission terminals 11 of two signal transmission structures 10 that need to be connected in a binding manner, the openings of the two corresponding grooves 110 may be disposed opposite to each other or may be disposed in a staggered manner during binding, and conductive structures 12 are disposed on the grooves 110, so that the signal transmission terminals 11 in the two signal transmission structures 10 are electrically connected through the conductive structures 12. In addition, a plurality of small grooves may be provided on the signal transmission terminal 11, or one large groove may be provided on the signal transmission terminal 11, and the present invention is not limited to the positions and the number of the grooves 110, and may be provided as required by those skilled in the art.
It should be further noted that, in order to ensure the normal operation of the display panel, the display panel provided in the embodiment of the invention further includes other structures, for example, includes a pixel circuit and a light emitting element that are connected to each other, where the pixel circuit provides a display signal to the light emitting element, so as to ensure the normal light emitting display of the light emitting element. The embodiment of the invention does not limit other structures of the display panel, and only ensures that the display panel can work normally.
In summary, according to the display panel provided by the embodiment of the invention, at least one groove is formed in at least part of the signal transmission terminals of the plurality of signal transmission terminals, the groove penetrates through at least part of the signal transmission terminals along the thickness direction of the display panel, and the conductive structure is arranged on the groove, when at least two signal transmission structures are bound, the conductive structure can be fixed on the groove, the problem that the conductive structure slides out of the signal transmission structure when the signal transmission structures are bound is avoided, the utilization rate of the conductive structure is low is caused, the number of conductive particles between the at least two signal transmission terminals is increased, and then in the subsequent binding extrusion process, the conductive particles in the groove can be fully crushed by the corresponding two signal transmission terminals, so that good electrical contact performance is realized, the impedance of the signal transmission terminals is reduced, and the display effect of the display panel is improved.
Based on the above embodiments, the at least two signal transmission structures 10 may include at least two of a substrate base, a flexible circuit board, and a driving chip.
Specifically, since the driving chip may include different setting manners in the display panel, the binding manners of the signal transmission structures 10 in different schemes are different, for example, the driving chip is bound on the substrate in the COG scheme, and the flexible circuit board is bound on the substrate, so that at least two signal transmission structures may be the driving chip and the substrate, or the flexible circuit board and the substrate, respectively. For example, when at least two signal transmission structures are the driving chip and the substrate board, respectively, a plurality of signal transmission terminals provided in the driving chip and a plurality of signal transmission terminals provided in the substrate board are electrically connected in a binding manner, and signal transmission, such as a data signal, is performed with each other; for another example, when the at least two signal transmission structures are the flexible circuit board and the substrate board, respectively, a plurality of signal transmission terminals provided in the flexible circuit board and a plurality of signal transmission terminals provided in the substrate board are electrically connected in binding, and signal transmission, such as a positive power supply signal and a negative power supply signal, is performed to each other. In the COF scheme, the driving chip is bound on the flexible circuit board, and the flexible circuit board is bound on the substrate, so that the at least two signal transmission structures can be the flexible circuit board and the substrate, or the flexible circuit board and the driving chip, respectively. For example, when the at least two signal transmission structures are the flexible circuit board and the substrate board, respectively, a plurality of signal transmission terminals provided in the flexible circuit board and a plurality of signal transmission terminals provided in the substrate board are electrically connected in binding, and signal transmission such as a positive power supply signal and a negative power supply signal is performed to each other. In other embodiments, other ways may be used, and the invention is not limited thereto, as long as two signal transmission structures 10 are electrically connected in a binding manner through the signal transmission terminals 11.
On the basis of the above embodiment, fig. 5 is a schematic view of a cross-sectional structure of fig. 1 along the direction A-A', referring to fig. 2 and 5, the conductive structure 12 includes conductive particles 121, and the diameter of the conductive particles 121 is D; the groove 110 has a groove depth H and a groove width L; wherein D > H, and/or D > L.
The conductive structure 12 may include conductive particles 121, where the conductive particles 121 are disposed on the grooves 110, and the conductive particles 121 normally have an insulating film, so that the conductive particles 121 disposed on the grooves 110 are non-conductive, and during binding extrusion of the two signal transmission structures 10, the corresponding two signal transmission terminals 11 compress the conductive particles 121 to break the insulating film of the conductive particles 121, so that the conductive particles 121 are conductive, and therefore, in order to enable the conductive particles 121 on the grooves 110 to be fully extruded, the slotting depth and slotting width of the grooves 110 need to be limited.
Specifically, referring to fig. 2, let the diameter of the conductive particles 121 be D; the grooving depth of the groove 110 is H, and the grooving width is L, so the grooving width L of the groove 110 needs to be smaller than the diameter D of the conductive particle 121, and therefore, the groove 110 is a small groove, the conductive particle 121 cannot be completely embedded into the groove 110, and most of the conductive particle 121 is exposed outside the groove 110, and further, in the binding and extrusion process of the two signal transmission structures 10, the corresponding two signal transmission terminals 11 can fully compress the conductive particle 121, so that the insulating film of the conductive particle 121 is broken, and at this time, the grooving depth H of the groove 110 may not be limited, i.e., the grooving depth H may be smaller than the diameter D of the conductive particle 121, or may be greater than or equal to the diameter D of the conductive particle 121.
However, the grooving depth H of the groove 110 cannot be too deep or too shallow. Specifically, the diameter D of the conductive particles may be 3 μm, and if the grooving depth H of the groove 110 is less than 1 μm, the grooving depth H of the groove 110 is too shallow, and the conductive particles 121 may not be fixed during extrusion; if the groove depth H of the groove 110 is greater than 7 μm, the corresponding two signal transmission terminals 11 cannot conduct electricity through the conductive particles 121.
Further, referring to fig. 2 and 5, the diameter of the conductive particles 121 is set to D; the grooving depth H of the groove 110 is H, and the grooving width is L, so that the grooving depth H of the groove 110 needs to be smaller than the diameter D of the conductive particle 121, and therefore, the conductive particle 121 cannot be completely embedded in the groove 110, and a part of the conductive particle 121 is exposed outside the groove 110, and further, in the binding extrusion process of the two signal transmission structures 10, the corresponding two signal transmission terminals 11 can fully extrude the conductive particle 121, so that the insulating film of the conductive particle 121 is broken, and therefore, the grooving width L of the groove 110 can be not limited. If the slot width L of the slot 110 is greater than the diameter D of the conductive particle 121, as shown in fig. 5, the slot 110 may be a large slot, and a plurality of conductive particles 121 may be accommodated in the slot width direction of the slot 110; if the slot width L of the slot 110 is smaller than the diameter D of the conductive particle 121, as shown in fig. 1, the slot 110 is a small slot, and only one conductive particle 121 can be accommodated in the slot width L of the slot 110, and a plurality of small slots can be provided in the signal transmission terminal 11. The present invention is not limited to the depth of the groove 110 and the width of the groove, and those skilled in the art may specifically limit the depth of the groove as desired.
The case where the groove 110 is a small groove or a large groove will be described below with reference to the specific drawings.
Optionally, fig. 6 is a schematic view of a cross-sectional structure along A-A' in fig. 1, referring to fig. 6, at least part of the signal transmission terminals 11 are provided with a plurality of grooves 110, and the plurality of grooves 110 are arranged along a first direction X, where the first direction X is parallel to a surface on which the signal transmission structure 10 is located; in the same signal transmission terminal 11, the distribution density of the grooves 110 in the region near the center of the signal transmission terminal 11 is greater than the distribution density of the grooves 110 in the region near the edge of the signal transmission terminal 11.
Specifically, at least a portion of the signal transmission terminals 11 are provided with a plurality of grooves 110, where the groove width L of the grooves 110 is smaller than the diameter D of the conductive particles 121, the grooves 110 are arranged along the first direction X, the conductive particles 121 are correspondingly fixed on the grooves 110, and in the binding and extrusion process of the two signal transmission structures 10, excessive broken conductive particles 121 may overflow from the edges of the signal transmission terminals 11 to between two adjacent signal transmission terminals 11 on the same signal transmission structure 10, so that the two adjacent signal transmission terminals 11 are conducted to cause a short circuit. Therefore, in the embodiment of the invention, by arranging the same signal transmission terminal 11, the distribution density of the grooves 110 in the area near the center of the signal transmission terminal 11 is greater than that of the grooves 110 in the area near the edge of the signal transmission terminal 11, so that the grooves are mostly concentrated in the area near the center of the signal transmission terminal 11, and the situation that too many broken conductive particles 121 overflow from the area near the edge of the signal transmission terminal 11 to cause the short circuit of two adjacent signal transmission terminals 11 is avoided, thereby improving the reliability of the display panel.
Optionally, fig. 7 is a schematic view of a cross-sectional structure along A-A' in fig. 1, referring to fig. 7, at least part of the signal transmission terminals 11 are provided with a plurality of grooves 110, and the plurality of grooves 110 are arranged along a first direction X, where the first direction X is parallel to a surface on which the signal transmission structure 10 is located; in the same signal transmission terminal 11, the grooving depth H of the groove 110 in the region near the center side of the signal transmission terminal 11 is smaller than the grooving depth H of the groove 110 in the region near the edge side of the signal transmission terminal 11.
Specifically, a plurality of grooves 110 are disposed in at least a portion of the signal transmission terminals 11, wherein the groove width L of the plurality of grooves 110 is smaller than the diameter D of the conductive particles 121, the plurality of grooves 110 are arranged along the first direction X, the plurality of conductive particles 121 are correspondingly fixed on the plurality of grooves 110, and because the conductive particles 121 are disposed in adhesive glue, in the binding and extrusion process of the two signal transmission structures 10, the adhesive glue on the grooves 110 in the edge side area near the signal transmission terminals 11 overflows from the edges, and therefore, in the embodiment of the invention, the plurality of grooves 110 can be uniformly arranged, and by disposing in the same signal transmission terminal 11, the groove depth H of the groove 110 in the center side area near the signal transmission terminals 11 is smaller than the groove depth H of the groove 110 in the edge side area near the signal transmission terminals 11, so that in the binding and extrusion process of the two signal transmission structures 10, the groove 110 in the edge side area near the signal transmission terminals 11 fills more adhesive glue, and the adhesive glue is prevented from overflowing from the edges of the signal transmission terminals 11, and the reliability of the device is improved.
It should be noted that, when the groove depth H of the groove 110 in the region near the center of the signal transmission terminal 11 is smaller than the groove depth H of the groove 110 in the region near the edge of the signal transmission terminal 11 in the same signal transmission terminal 11, the groove depth H of the groove 110 in the region near the edge of the signal transmission terminal 11 needs to be smaller than 7 μm, so that the corresponding two signal transmission terminals 11 in the two signal transmission structures 10 cannot conduct electricity through the conductive particles 121.
Optionally, fig. 8 is a schematic view of a cross-sectional structure along A-A' in fig. 1, referring to fig. 8, at least part of the signal transmission terminals 11 are provided with a plurality of grooves, and the plurality of grooves 110 are arranged along a first direction X, where the first direction X is parallel to a surface on which the signal transmission structure 10 is located; in the same signal transmission terminal 11, the groove width L of the groove 110 in the region near the center side of the signal transmission terminal 11 is smaller than the groove width L of the groove in the region near the edge side of the signal transmission terminal.
Specifically, at least a portion of the signal transmission terminals 11 are provided with a plurality of grooves 110, wherein the groove depth H of the plurality of grooves 110 is smaller than the diameter D of the conductive particles 121, the conductive particles 121 cannot completely fill the grooves 110, the plurality of grooves 110 are arranged along the first direction X, and the conductive particles 121 are disposed in the adhesive glue, so that the adhesive glue on the grooves 110 in the area near the edge of the signal transmission terminals 11 overflows from the edge during the binding and extrusion process of the two signal transmission structures 10. Therefore, in the embodiment of the present invention, by setting the slot width L of the slot 110 in the area near the center of the signal transmission terminal 11 to be smaller than the slot width L of the slot in the area near the edge of the signal transmission terminal in the same signal transmission terminal 11, the slot 110 in the area near the edge of the signal transmission terminal 11 is filled with more adhesive in the binding and extrusion process of the two signal transmission structures 10, so that the adhesive is prevented from overflowing from the edge of the signal transmission terminal 11, and the reliability of the device is improved.
It should be noted that, since the grooving depth H of the plurality of grooves 110 is smaller than the diameter D of the conductive particles 121, the grooving width L of the plurality of grooves 110 may not be limited, for example, a plurality of small grooves may be provided, wherein the grooving width of the small grooves is smaller than the diameter D of the conductive particles 121, and the grooving width of the small grooves in the area near the center of the signal transmission terminal 11 is smaller than the grooving width of the small grooves in the area near the edge of the signal transmission terminal in the same signal transmission terminal 11; or a plurality of small grooves and a plurality of large grooves may be provided, the grooving width of the small grooves is smaller than the diameter D of the conductive particles 121, the grooving width of the large grooves is larger than the diameter D of the conductive particles 121, the large grooves are located in the same signal transmission terminal 11 and near the central side area of the signal transmission terminal 11, and the small grooves are located in the edge side area of the same signal transmission terminal 11, and in other embodiments, other arrangement modes are also possible, which is not limited by the present invention.
Alternatively, fig. 9 is a schematic view of a further cross-sectional structure along A-A' in fig. 1, referring to fig. 9, at least part of the signal transmission terminals 11 is provided with a groove 110, the groove width L of the groove 110 is smaller than the width of the signal transmission terminals 11, and the groove depth H of the groove 110 gradually increases along the direction in which the center of the signal transmission terminal 11 points to the edge of the signal transmission terminal 11 in the same signal transmission terminal 11.
Specifically, at least a part of the signal transmission terminals 11 is provided with one groove 110, the groove 110 may be a large groove, that is, the grooving width L of the groove 110 is smaller than the width of the signal transmission terminals 11 and larger than the diameter D of the conductive particles 121, a plurality of conductive particles 121 may be disposed in the groove 110 along the width direction of the signal transmission terminals 11, in order to avoid that adhesive overflows from the edges of the signal transmission terminals 11 in the binding and extrusion process of two signal transmission structures 10, the same signal transmission terminals 11 may be disposed, the grooving depth H of the groove 110 gradually increases along the direction in which the center of the signal transmission terminal 11 points to the edges of the signal transmission terminals 11, in other words, the bottom of the groove 110 may be in an inverted V shape, so that the edge portions of the groove 110 can be filled with more adhesive.
When the trench 110 is a large trench, since the insulating film of the conductive particle 121 needs to be broken and the conductive particle 121 is further made conductive, the trench 110 needs to have a trench depth H smaller than the diameter D of the conductive particle 121, and particularly in the case where the same signal transmission terminal 11 is provided, the trench 110 needs to have a trench depth H smaller than the diameter D of the conductive particle 121 in an embodiment where the trench depth H gradually increases along the direction in which the center of the signal transmission terminal 11 is directed toward the edge of the signal transmission terminal 11.
On the basis of the above-mentioned embodiments, fig. 10 is a top view of a display panel according to the embodiment of the present invention, referring to fig. 10, along the extending direction of the trench 110, the trench 110 penetrates through the signal transmission terminal 11, so that more conductive particles 121 may be disposed in the extending direction of the trench 110, thereby further reducing the impedance of the signal transmission terminal. In addition, along the extending direction of the groove 110, the groove 110 may or may not extend through the signal transmission terminal 11, and the present invention is not limited thereto, and those skilled in the art may specifically set according to actual needs.
Optionally, with continued reference to fig. 2, the display panel 1 further comprises an adhesive; the conductive structure 12 is disposed in the adhesive. Specifically, as shown in fig. 1, the adhesive is disposed between two signal transmission structures 10 and covers the signal transmission structure 10 located below, and since the adhesive is laid in whole layer during the manufacturing process, the adhesive includes a portion located above the signal transmission terminals 11 and a portion located between two adjacent signal transmission terminals 11 on the same signal transmission structure 10. In addition, since the diameter D of the conductive particles 121 is smaller than the thickness of the signal transmission terminals 11, the conductive particles 121 located above the signal transmission terminals 11 can be crushed and conducted during the binding and extrusion process of the two signal transmission structures 10, and the conductive particles 121 located between two adjacent signal transmission terminals 11 on the same signal transmission structure 10 cannot be crushed, so that two adjacent signal transmission terminals 11 on the same signal transmission structure 10 cannot be conducted.
Optionally, with continued reference to fig. 10, the shape of the groove 110 includes at least one of a straight line shape, a folded line shape, or a curved line shape. The linear groove 110 is simple to arrange and convenient to manufacture. And the zigzag or curved grooves 110 can be provided with more conductive particles 121 in the grooves 110, so that the connection impedance between the signal transmission terminals is further reduced, and the display effect is improved. In other embodiments, the shape of the groove 110 may be irregular, and the present invention is not limited to the shape of the groove 110, and one skilled in the art may set the shape as needed.
Based on the same inventive concept, the embodiment of the present invention further provides a display device, and fig. 11 is a schematic structural diagram of the display device provided by the embodiment of the present invention, as shown in fig. 11, the display device 100 includes the display panel 1 according to any one of the embodiments, so that the display device 100 provided by the embodiment of the present invention has the corresponding beneficial effects in the foregoing embodiments, which are not repeated herein. For example, the display apparatus 100 may be an electronic device such as a mobile phone, a computer, a smart wearable device (e.g., a smart watch), and a vehicle-mounted display device, which is not limited in the embodiment of the present invention.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (10)
1. A display panel comprising at least two signal transmission structures, the signal transmission structures comprising a plurality of signal transmission terminals;
The display panel further comprises at least one groove positioned in at least part of the signal transmission terminals and a conductive structure arranged in the groove; the groove penetrates at least part of the signal transmission terminals along the thickness direction of the display panel;
The signal transmission terminals in the two signal transmission structures are electrically connected through the conductive structure;
The conductive structure comprises conductive particles, wherein the diameter of the conductive particles is D;
The grooving depth of the groove is H, and the grooving width is L;
wherein D > H, and/or D > L.
2. The display panel according to claim 1, wherein a plurality of the grooves are provided in at least part of the signal transmission terminals, the plurality of the grooves being arranged in a first direction, the first direction being parallel to a surface on which the signal transmission structure is located;
In the same signal transmission terminal, the distribution density of the grooves in the area near the center of the signal transmission terminal is greater than the distribution density of the grooves in the area near the edge of the signal transmission terminal.
3. The display panel according to claim 1, wherein a plurality of the grooves are provided in at least part of the signal transmission terminals, the plurality of the grooves being arranged in a first direction, the first direction being parallel to a surface on which the signal transmission structure is located;
In the same signal transmission terminal, the grooving depth of the groove in the area near the center of the signal transmission terminal is smaller than the grooving depth of the groove in the area near the edge of the signal transmission terminal.
4. The display panel according to claim 1, wherein a plurality of the grooves are provided in at least part of the signal transmission terminals, the plurality of the grooves being arranged in a first direction, the first direction being parallel to a surface on which the signal transmission structure is located;
In the same signal transmission terminal, the width of the groove in the area near the center of the signal transmission terminal is smaller than the width of the groove in the area near the edge of the signal transmission terminal.
5. The display panel according to claim 1, wherein one of the grooves is provided in at least part of the signal transmission terminals, and a grooved width of the groove is smaller than a width of the signal transmission terminal;
in the same signal transmission terminal, the groove depth of the groove gradually increases along the direction that the center of the signal transmission terminal points to the edge of the signal transmission terminal.
6. The display panel according to claim 1, wherein the groove penetrates the signal transmission terminal in an extending direction of the groove.
7. The display panel of claim 1, wherein at least two of the signal transmission structures comprise at least two of a substrate base, a flexible circuit board, and a driver chip.
8. The display panel of claim 1, further comprising an adhesive; the conductive structure is arranged in the adhesive.
9. The display panel of claim 1, wherein the shape of the channel comprises at least one of a straight line shape, a folded line shape, or a curved line shape.
10. A display device comprising the display panel of any one of claims 1-9.
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| CN202211193269.7A CN115483229B (en) | 2022-09-28 | 2022-09-28 | Display panel and display device |
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| CN202211193269.7A CN115483229B (en) | 2022-09-28 | 2022-09-28 | Display panel and display device |
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| CN115483229B true CN115483229B (en) | 2024-09-03 |
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| CN1862327A (en) * | 2006-06-12 | 2006-11-15 | 友达光电股份有限公司 | Signal transmission assembly and display using same |
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| TWI531835B (en) * | 2011-11-15 | 2016-05-01 | 友達光電股份有限公司 | Display panel |
| JP2019015902A (en) * | 2017-07-10 | 2019-01-31 | 株式会社ジャパンディスプレイ | Method for manufacturing display and display |
| CN111755463A (en) * | 2020-06-24 | 2020-10-09 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
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| CN1862327A (en) * | 2006-06-12 | 2006-11-15 | 友达光电股份有限公司 | Signal transmission assembly and display using same |
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