CN117496835A - Display module, splicing method thereof and display device - Google Patents
Display module, splicing method thereof and display device Download PDFInfo
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- CN117496835A CN117496835A CN202311699458.6A CN202311699458A CN117496835A CN 117496835 A CN117496835 A CN 117496835A CN 202311699458 A CN202311699458 A CN 202311699458A CN 117496835 A CN117496835 A CN 117496835A
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 239000000758 substrate Substances 0.000 claims description 14
- 238000002360 preparation method Methods 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 21
- 238000005516 engineering process Methods 0.000 description 6
- 238000000059 patterning Methods 0.000 description 4
- 238000007747 plating Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010147 laser engraving Methods 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010023 transfer printing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/302—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements characterised by the form or geometrical disposition of the 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
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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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
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/02—Composition of display devices
- G09G2300/026—Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Liquid Crystal (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention discloses a display module, a splicing method thereof and a display device. In the area of the second face adjacent to the first face, a plurality of signal lines extend in a first direction and are arranged in a second direction. And a plurality of side wires are arranged on two surfaces of the splicing component, which are close to the display panel. The display module further comprises at least two flexible circuit boards. One end of the side wire is electrically connected with the signal wire in the adjacent display panel at one side of the splicing component, and the other end of the side wire is electrically connected with the binding pad of the corresponding flexible circuit board. Therefore, the electrical connection from front to side and from side to back in the display panel is realized through the side wiring arranged on the splicing component, the complexity of the process is greatly simplified, the preparation yield is improved, and the production cost is reduced.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display module, a splicing method thereof and a display device.
Background
With the continuous development of display technology, the manufacturing technology of the display screen is gradually mature, the large-size screen is widely applied to various occasions indoors and outdoors, and the large-size spliced display screen is favored by more and more users due to the advantages of portability, low failure rate, long service life, low power consumption and the like.
At present, a side wiring technology is generally adopted to reduce the width of a frame of a display panel during splicing, but the preparation process of the side wiring technology in the prior art is complex, high in cost, high in difficulty and low in preparation yield.
Disclosure of Invention
The embodiment of the invention provides a display module, a splicing method thereof and a display device, which are used for solving the problems of complex process, high cost, high difficulty and low preparation yield of the wiring on the side surface of a display panel and the wiring on the back surface of the display panel in the prior art, and greatly simplifying the complexity of the process.
In a first aspect, an embodiment of the present invention provides a display module, including:
the display device comprises at least two display panels and at least one splicing component, wherein first surfaces of the at least two display panels are spliced with each other through the splicing component;
the second surface of the display panel comprises a plurality of signal lines and a plurality of light emitting units, the signal lines are electrically connected with the light emitting units, and the first surface is adjacent to the second surface; in the area of the second surface adjacent to the first surface, a plurality of signal lines extend along a first direction and are arranged along a second direction, the second direction intersects with the first direction, and the first direction and the second direction are parallel to the direction of the plane where the display panel is positioned;
A plurality of side wires are arranged on two surfaces of the splicing component, which are close to the display panel, and the extending direction of the side wires is intersected with the direction of the plane where the display panel is positioned;
the display module further comprises at least two flexible circuit boards;
one end of the side wire is electrically connected with the signal wire in the adjacent display panel at one side of the splicing component, and the other end of the side wire is electrically connected with the binding pad of the corresponding flexible circuit board.
In a second aspect, an embodiment of the present invention provides a method for splicing display modules, where the method is used for splicing the display modules to form the first aspect, and the method includes:
respectively manufacturing a plurality of side wirings on a first surface and a second surface of the splicing component, wherein the first surface and the second surface are opposite, and the area of the first surface and the area of the second surface are larger than a preset area;
turning over the splicing component so that the first surface and the second surface of the splicing component are used as two surfaces close to the display panel, and the extending directions of the turned side wires are intersected with the direction of the plane where the display panel is located;
manufacturing a plurality of signal lines on a second surface of the display panel, wherein the second surface is adjacent to the first surface, the plurality of signal lines extend along a first direction and are arranged along a second direction, the second direction intersects with the first direction, and the first direction and the second direction are parallel to the direction of a plane where the display panel is positioned;
And splicing the first surfaces of the at least two display panels through the splicing component, so that one end of the side wiring is electrically connected with the signal wire in the adjacent display panel on one side of the splicing component, and the other end of the side wiring is electrically connected with the binding pad of the corresponding flexible circuit board.
In a third aspect, an embodiment of the present invention provides a display device, including the display module of any one of the first aspects.
The display module provided by the embodiment of the invention is electrically connected with the signal wires of the second surface in the adjacent display panel and the binding pads of the corresponding flexible circuit board respectively through the plurality of side wires arranged on the surface of the side wires close to the display panel on one side of the splicing component, so that the electrical connection from front to side and from side to back in the display panel is realized.
Drawings
Fig. 1 is a schematic structural diagram of a display module according to an embodiment of the present invention;
FIG. 2 is a schematic view of a cross-sectional structure along the direction E-E' in FIG. 1;
fig. 3 is a schematic structural diagram of another display module according to an embodiment of the present invention;
FIG. 4 is an enlarged schematic view of region B of FIG. 2;
FIG. 5 is a schematic diagram illustrating connection between a side trace and a signal line according to an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating connection between a signal line and another side trace according to an embodiment of the present invention;
FIG. 7 is an enlarged schematic view of region C of FIG. 1;
FIG. 8 is a schematic view of a splice component according to an embodiment of the present invention;
FIG. 9 is a schematic view of another splice component according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of another display module according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of another display module according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of another display module according to an embodiment of the present invention;
fig. 13 is a schematic structural diagram of another display module according to an embodiment of the present invention;
FIG. 14 is another cross-sectional view taken along the direction E-E' in FIG. 1;
FIG. 15 is another cross-sectional view taken along the direction E-E' in FIG. 1;
Fig. 16 is a flowchart illustrating a method for splicing display modules according to an embodiment of the present invention;
fig. 17 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.
The inventor researches and discovers that in the prior art, a side wiring technology is generally adopted to reduce the width of a frame of a display panel, specifically, after the wiring is prepared on the front side of the display panel, a physical vapor deposition, transfer printing or screen printing process is adopted to coat a film on the back side and one side of the display panel, and patterning processes such as photoetching, laser engraving or back engraving are adopted to pattern the back side and one side of the display panel so as to form the wiring on the side and the back side of the display panel, so that the front side and the back side of the display panel are electrically connected. However, the process not only needs to prepare the wiring on the side surface of the display panel, but also needs to prepare the wiring on the back surface of the display panel, and the whole process is complex, the difficulty is high, the cost is high, and the preparation yield is low.
Fig. 1 is a schematic structural diagram of a display module according to an embodiment of the present invention, and fig. 2 is a schematic structural diagram of a cross section along a direction E-E' in fig. 1, and, as shown in fig. 1 and fig. 2, the display module according to an embodiment of the present invention includes at least two display panels 10 and at least one splicing member 20, wherein first surfaces AA of the at least two display panels are spliced with each other by the splicing member 20. The second face BB of the display panel 10 includes a plurality of signal lines 110 and a plurality of light emitting units 120, the signal lines 110 are electrically connected to the light emitting units 120, and the first face AA is adjacent to the second face BB. In the area of the second surface BB adjacent to the first surface AA, the plurality of signal lines 110 extend along a first direction X, are arranged along a second direction Y, intersect the first direction X, and are parallel to the direction of the plane of the display panel 10. The two surfaces DD of the splicing member 20, which are close to the display panel, are each provided with a plurality of side traces 210, and the extending direction of the side traces 210 intersects with the direction of the plane of the display panel 10. The display module further comprises at least two flexible circuit boards 30. On one side of the splice member 20, one end of the side trace 210 is electrically connected to the signal line 210 in the adjacent display panel 10, and the other end of the side trace is electrically connected to the bonding pad of the corresponding flexible circuit board 30.
As illustrated in fig. 1 and 2, the display module includes at least two display panels 10 and at least one splice member 20. The display panel 10 is used for realizing image display, and the joint component 20 may be a glass carrier, and is used for realizing the joint of a plurality of display panels 10, and is not used for display. Specifically, the display panel 10 includes a first face AA, a second face BB, and a third face CC. The second surface BB is disposed opposite to the third surface CC, and the second surface BB is disposed adjacent to the first surface AA. The first sides AA of at least two display panels 10 are spliced to each other by the splice member 20, i.e., the first side AA of the display panel 10 is one of the plurality of sides of the display panel adjacent to the splice member 20.
The second face BB of the display panel 10 may be a front face of the display panel, and the second face BB of the display panel 10 includes a display area including a plurality of light emitting units 120, and the plurality of light emitting units 120 are configured to emit light to enable the display panel 10 to display a picture. The second face BB of the display panel 10 is also provided with a plurality of signal lines 110. The signal line 110 may include at least one of a scan signal line, a data signal line, a positive power signal line, a negative power signal line, and a reset signal line. For example, if the signal lines 110 include scan signal lines and data signal lines, in the display area, the plurality of scan signal lines extend in a first direction X, and are arranged in a second direction Y, and the plurality of data signal lines extend in a second direction Y, and are arranged in the first direction X, wherein the first direction X is a direction in which the display panel 10 points toward the splice member 20, the second direction Y intersects the first direction X, and both the first direction X and the second direction Y are parallel to a direction of a plane in which the display panel 10 is located. The plurality of data signal lines and the plurality of scan signal lines are electrically connected with the light emitting unit 120, and further provide data signals and scan signals for the light emitting unit 120, so as to ensure that the light emitting unit 120 works normally.
It will be appreciated that, in the side routing technology, in order to achieve the front-to-side electrical connection of the display panel, the front routing of the display panel needs to be led to the area where the front of the display panel is adjacent to the same side, and then the plurality of signal lines 110 extend along the first direction X in the area where the second face BB of the display panel 10 is adjacent to the first face AA, and are arranged along the second direction Y, in other words, the portions of the signal lines such as the data signal lines and the scan signal lines, where the second face BB is adjacent to the first face AA, all need to extend along the first direction X to achieve the front-to-side electrical connection of the display panel 10. The third surface CC of the display panel 10 may be a back surface of the display panel, that is, the third surface CC of the display panel 10 is located on the non-light emitting side of the display panel 10.
In the embodiment of the present invention, the side traces 210 are disposed on the splicing member 20, but the traces are not required to be disposed on the first surface AA of the display panel 10. Specifically, before the two display panels 10 are spliced, a plurality of side traces 210 may be fabricated on the first surface DD1 and the second surface DD2 of the splice member 20, where the first surface DD1 and the second surface DD2 are the largest planes of the splice member 20, and then the splice member 20 is turned over, so that the first surface DD1 and the second surface DD2 of the splice member 20 are respectively used as two surfaces close to the display panel 10, and after being turned over, the extending directions of the plurality of side traces 210 disposed on the first surface DD1 and the second surface DD2 of the splice member 20 intersect with the direction of the plane of the display panel, and since the second surface BB of the display panel 10 is adjacent to the area of the first surface AA, the plurality of signal lines 110 extend along the first direction X and are arranged along the second direction Y, and one ends of the side traces 210 on the first surface DD1 and the second surface DD2 may be electrically connected with the signal lines 110 on the adjacent display panel 10, respectively, so as to realize electrical connection with the front surface and the side surface of the display panel 10.
In addition, the display module of the embodiment of the invention further includes two flexible circuit boards 30, the other ends of the side traces 210 on the first surface DD1 and the second surface DD2 can be respectively electrically connected with the binding pads of the corresponding flexible circuit boards 30, so that the flexible circuit boards 30 provide signals for the signal lines 110 on the corresponding display panels 10 through the side traces 210, that is, different display panels 10 are respectively independently controlled through the corresponding flexible circuit boards 30, and further, the electrical connection between the side and the back of the display panels 10 is realized. Thus, the front and side surfaces and the side and back surfaces of the display panel 10 can be electrically connected without forming the wiring on the first surface AA and the third surface CC of the display panel by a film plating process, a patterning process and the like, so that the complexity of the process is greatly simplified, the difficulty of preparing the electrical connection from the front surface to the side surface and from the side surface to the back surface of the display panel is reduced, the preparation yield is improved, and the production cost is reduced.
It should be noted that, in fig. 1, the side trace 210 is disposed on the splicing member 20 to further provide a space between the side trace 210 and the first surface AA of the display panel 10, and those skilled in the art will understand that, in an actual display module, the side trace 210 is directly contacted with the first surface AA.
It should be noted that, in the embodiment shown in fig. 1 and fig. 2, the operation of the display panel 10 corresponding to the flexible circuit board control located at one side of the splicing member 20 is illustrated as an example, but the present invention is not limited thereto, and in other embodiments, the operation of the display panels 10 located at both sides of the splicing member 20 may be controlled simultaneously by one flexible circuit board 30. Specifically, on the basis of the foregoing embodiment, fig. 3 is a schematic structural diagram of another display module provided in the embodiment of the present invention, where, in the implementation manner shown in fig. 3, the display module includes two display panels 10, a splicing component 20 and a flexible circuit board 30, a side trace 210 is disposed on a first surface DD1 of the splicing component 20, one end of the side trace 210 is electrically connected with the corresponding display panel 10, and the other end of the side trace 210 is electrically connected with a bonding pad of the flexible circuit board 30. Meanwhile, the signal lines 110 on the second side BB of one display panel 10 are electrically connected to the signal lines 110 on the second side BB of the other display panel 10 through the connection lines 1100, so that the display panels 10 located at both sides of the splice member 20 can be simultaneously controlled to operate through one flexible circuit board 30.
In summary, in the embodiment of the invention, the plurality of side wires are arranged on the two surfaces of the splicing component, which are close to the display panel, so that one end of each side wire is electrically connected with the signal wire of the second surface in the adjacent display panel, and the other end of each side wire is electrically connected with the binding pad of the corresponding flexible circuit board, thereby realizing the electrical connection between the front surface and the side surface and between the side surface and the back surface in the display panel.
It is understood that when one end of the side trace 210 is electrically connected to the signal line 110 in the adjacent display panel 10, different connection manners may be adopted, and the connection manner of the side trace 210 and the signal line 110 is combined with the specific embodiment below. Note that, the arrangement of the signal lines 110 is described in the arrangement of the scanning signal lines, which is not described in detail below.
On the basis of the above embodiment, fig. 4 is an enlarged schematic view of the area B in fig. 2, and referring to fig. 2 and 4, the signal line 110 at least partially overlaps the side trace 210 along the first direction X, and the side trace 210 is in direct contact with the signal line 110. As shown in fig. 2 and 4, the side trace 210 on the splice member 20 includes a portion overlapping the signal line 110 and a portion offset from the signal line 110 along the first direction X, and further, the portion overlapping the signal line 110 in the side trace 210 is in direct contact with the signal line 110, so that one end of the side trace 210 is electrically connected to the signal line 110 in the adjacent display panel 10. In this way, the electrical connection between the side trace 210 and the signal line 110 in the splice component 20 is realized by directly lapping the side trace 210 with the signal line 110, the connection mode is simple, and the process flow can be further reduced. It should be noted that, when the electrical connection between the front and the side of the display panel 10 is implemented by directly contacting the side trace 210 on the splice member 20 with the signal line 110, the side trace 210 includes a portion located on the side (the first surface DD1 or the second surface DD 2) of the splice member 20 before and after the splicing.
In yet another embodiment, fig. 5 is a schematic connection diagram of a side trace and a signal line according to an embodiment of the present invention, referring to fig. 1 and 5, a plurality of connection pads 40 are disposed in the second face BB near the edge of the splice member 20, and one end of the side trace 210 is electrically connected to the signal line 110 in the adjacent display panel 10 through a connection pad 410 on one side of the splice member 20. Specifically, before the splicing, the side trace 210 is located on the surface of the splicing member 20 near the display panel 10, after the splicing, since the front-to-side electrical connection in the display panel 10 needs to be achieved, the plurality of side traces 210 located on one side of the splicing member 20 need to be electrically connected to the connection pad 40 located on the second surface BB, and then the connection pad 40 needs to be located on the edge position of the second surface BB near the splicing member 20, so that the electrical connection between the connection pad 40 and the side trace 210 is achieved after the splicing.
It should be noted that, in other embodiments, the side trace 210 may be electrically connected to the signal line 110 in other manners, which is not limited by the present invention, and may be set by those skilled in the art as required.
The above embodiments mainly describe the connection manner of the side trace 210 and the signal line 110, and the following describes the arrangement manner of the side trace 210 and the signal line 110 with reference to specific embodiments.
Optionally, fig. 6 is a schematic diagram of connection between the signal line and another side trace provided in the embodiment of the present invention, referring to fig. 2 and fig. 6, the signal line 110 exposes the first edge 110a at a position near the edge of the splice component 20 in the second face BB. Along the second direction Y, the width of the side trace 210 is different from the width of the first edge 110a.
Specifically, when the two display panels 10 are spliced by the splicing member 20, the side trace 210 disposed on the splicing member 20 needs to be positioned with high precision with the signal line 110 on the second face BB of the display panel 10, so that the side trace 210 and the signal line 110 just overlap. If the positioning error generated between the side trace 210 and the signal line 110 is too large, the width of the component where the side trace 210 and the signal line 110 can be actually lapped together becomes small, so that the contact resistance is increased, and even the side trace 210 and the signal line 110 are broken at the lap joint position, so that the stability of the electrical connection between the front and the side in the display panel is poor. For this reason, the embodiment of the present invention exposes the first edge 110a in the second face BB at a position near the edge of the splice member 20 by disposing the signal line 110. Along the second direction Y, the width of the side trace 210 is different from the width of the first edge 110a, so that along the second direction Y, a redundant space between the side trace 210 and the first edge 110a in overlap joint can be formed at a portion between the side trace 210 and the first edge 110a, and when a positioning error exists between the width of the side trace 210 and the first edge 110a in the second direction Y, the redundant space exists, so that the actually overlapped width of the side trace 210 and the first edge 110a still can meet the connection requirement of the side trace 210 and the first edge 110a, so that the connection between the side trace 210 and the first edge 110a has good stability of physical connection and electrical connection, and the preparation yield of the display panel 10 in splicing is improved.
It should be noted that, in fig. 6, the width of the side trace 210 is smaller than the width of the first edge 110a, but the present invention is not limited thereto, and in other embodiments, the width of the side trace 210 may be larger than the width of the first edge 110a, which may be set by those skilled in the art as required.
Alternatively, fig. 7 is an enlarged schematic view of the region C in fig. 1, and as shown in fig. 6 and 7, the width of the side trace 210 is smaller than the width of the first edge 110a along the second direction Y. The signal line 110 includes a first signal line subsection 1101 and a second signal line subsection 1102. The first signal line segment 1101 is located on the side of the second signal line segment 1102 adjacent to the splice member 20. In the second direction Y, the width of the first signal line subsection 1101 is greater than the width of the second signal line subsection 1102.
Specifically, along the first direction X, the signal line 110 includes a first signal line segment 1101 and a second signal line segment 1102, where the first signal line segment 1101 is located in the signal line 110 near the splice component 20, the second signal line segment 1102 is located in the signal line 110 far from the splice component 20, and the first signal line segment 1101 exposes the first edge 110a at an edge location near the splice component 20 on the second face BB. Along the second direction Y, the width of the side trace 210 is smaller than the width of the first edge 110a, so that a portion of the first edge 110a that is more than the width of the side trace 110a along the second direction Y provides a redundant space for the first edge 110a and the side trace 210 when connected, so as to ensure that the connection between the side trace 210 and the first edge 110a has good physical connection and electrical connection stability. In addition, along the second direction Y, the width of the first signal line portion 1101 is greater than the width of the second signal line portion 1102, that is, the width of the side trace 210 is smaller than the width of the first edge 110a in the area of the second surface BB of the display panel 10 adjacent to the first surface AA, so that on the basis of ensuring good stability of physical connection and electrical connection at the connection between the side trace 210 and the first edge 110a, the resistance of the signal line 110 can be reduced, and the conductivity of the signal line 110 can be improved.
It should be noted that, in fig. 7, the signal lines are disposed only in an exemplary manner when the width of the side trace 210 is smaller than the width of the first edge 110a, and the present invention is not limited thereto, and in other embodiments, the width of the side trace 210 may be larger than the width of the first edge 110a along the second direction Y, and the width of the first signal line portion 1101 is still larger than the width of the second signal line portion 1102.
Alternatively, in an embodiment, fig. 8 is a schematic structural diagram of a splicing member according to an embodiment of the present invention, and fig. 9 is a schematic structural diagram of another splicing member according to an embodiment of the present invention, see fig. 8 and fig. 9. The two surfaces of the splice member 20 adjacent to the display panel 10 include a first surface DD1 and a second surface DD2. Along a direction perpendicular to the first surface DD1 or the second surface DD2, at least a portion of the side traces 210 in the first surface DD1 and at least a portion of the side traces 210 in the second surface DD2 are disposed to overlap. Alternatively, at least a portion of the side traces 210 on the first surface DD1 are offset from at least a portion of the side traces 210 on the second surface DD2 along a direction perpendicular to the first surface DD1 or the second surface DD2.
Specifically, the two surfaces of the splice member 20 adjacent to the display panel 10 include a first surface DD1 and a second surface DD2. The first surface DD1 and the second surface DD2 are disposed opposite to each other, and the areas of the first surface DD1 and the second surface DD2 are larger than the preset area, that is, the first surface DD1 and the second surface DD2 are the largest plane of the splice member 20. The at least two display panels 10 include a first display panel 130 and a second display panel 140. The first surface DD1 is located on a side of the splicing member 20 adjacent to the first display panel 130, and the second surface DD2 is located on a side of the splicing member 20 adjacent to the second display panel 140, in other words, the first surface DD1 is disposed opposite to the first surface AA of the first display panel 130, and the second surface DD2 is disposed opposite to the first surface AA of the second display panel 140. Illustratively, as shown in fig. 8, in a direction perpendicular to the first surface DD1 or the second surface DD2, the side trace 210 on the first surface DD1 is disposed overlapping the side trace 210 on the second surface DD2, in other words, the side trace 210 on the first surface DD1 is disposed in alignment with the side trace 210 on the second surface DD2, and at this time, the corresponding first display panel 130 and second display panel 140 are disposed in alignment. Or, as shown in fig. 9, along the direction perpendicular to the first surface DD1 or the second surface DD2, the side traces 210 on the first surface DD1 and the side traces 210 on the second surface DD2 are staggered, and at this time, the splicing positions of the corresponding first display panel 130 and second display panel 140 have a certain level difference, so that by setting at least part of the side traces 210 in the first surface DD1 and at least part of the side traces 210 in the second surface DD2 to overlap, or at least part of the side traces 210 in the first surface DD1 and at least part of the side traces 210 in the second surface DD2 are staggered, flexible splicing of the display module can be realized.
Optionally, fig. 10 is a schematic structural diagram of another display module provided in an embodiment of the present invention, referring to fig. 10, at least two display panels 10 include a first display panel 130 and a second display panel 140. The display area of the first display panel 130 is different from the display area of the second display panel 140. The density of the side traces 210 in the surface of the splice member 20 adjacent to the first display panel 130 is different from the density of the side traces 210 in the surface of the splice member 20 adjacent to the second display panel 140.
Specifically, as shown in fig. 10, the display module includes a first display panel 130 and a second display panel 140 having different display areas. If the display areas of the display panels are different, the size of the first display panel 130 is different from the size of the second display panel 140 along the first direction X, and/or the size of the first display panel 130 is different from the size of the second display panel 140 along the second direction Y, and thus the number of signal lines 110 in the first display panel 130 is different from the number of signal lines 110 in the second display panel 140. The signal line 110 may include at least one of a scan signal line, a data signal line, a positive power signal line, a negative power signal line, and a reset signal line, for example. When the signal lines 110 include data signal lines, the difference between the size of the first display panel 130 and the size of the second display panel 140 along the first direction X may cause the difference in the number of the data signal lines in the first display panel 130 and the second display panel 140, and further, in the area where the second surface BB of the display panel 10 is adjacent to the first surface AA, the arrangement density of the signal lines 110 of the first display panel 130 is different from the arrangement density of the signal lines 110 of the second display panel 140, and therefore, the arrangement density of the side traces 210 in the surface of the splice component 20 adjacent to the first display panel 130 is correspondingly different from the arrangement density of the side traces 210 in the surface of the splice component 20 adjacent to the second display panel 140, so as to match the signal lines 110 on the second surface BB of the display panel 10.
It should be noted that the number of the first display panels 130 and the second display panels 140 having different display areas is not limited in the embodiment of the present invention. Fig. 11 is a schematic structural diagram of another display module according to an embodiment of the present invention, and as shown in fig. 11, the display module may include a first display panel 130 and a plurality of second display panels 140. The display areas of the first display panel 130 and the second display panel 140 are different, and it is understood that the sizes of the plurality of second display panels 140 may be the same or different along the second direction Y, so long as the size of the first display panel 130 is guaranteed to be similar to the size of the plurality of second display panels 140 along the second direction Y. In other embodiments, fig. 12 is a schematic structural diagram of another display module according to an embodiment of the present invention, and as shown in fig. 12, the display module may further include a plurality of first display panels 130 and a plurality of second display panels 140. The display areas of the first display panels 130 and the display areas of the second display panels 140 are different, and the sizes of the plurality of first display panels 130 are similar to the sizes of the plurality of second display panels 140 along the second direction Y, and similarly, the sizes of the plurality of first display panels 130 may be the same or different along the second direction Y, and the sizes of the plurality of second display panels 140 may be the same or different, so that flexible splicing of the display panels is further realized.
With continued reference to fig. 10, the display area of the first display panel 130 is larger than the display area of the second display panel 140 on the basis of the above-described embodiment. The density of the side traces 210 in the surface of the splice member 20 adjacent to the first display panel 130 is greater than the density of the side traces 210 in the surface of the splice member 20 adjacent to the second display panel 140.
Illustratively, in the embodiment shown in fig. 10, the display area of the first display panel 130 is larger than the display area of the second display panel 140. Specifically, in the first direction X, the size of the first display panel 130 is greater than the size of the second display panel 140, and in the second direction Y, the size of the first display panel 130 is greater than the size of the second display panel 140, so that the number of signal lines 110 in the first display panel 130 is greater than the number of signal lines 110 in the second display panel 140, and further, in an area where the second face BB of the display panel 10 is adjacent to the first face AA, there is a case where the arrangement density of the signal lines 110 in the first display panel 130 is greater than the arrangement density of the signal lines 110 in the second display panel 140. And then, the matching density of the signal wires 110 in the display panel is matched by setting that the arrangement density of the side wires 210 in the first surface DD1 of the splicing component 20 is greater than that of the side wires 210 in the second surface DD2, and the normal operation of the display module is ensured on the basis of realizing flexible splicing of the display panels with different sizes.
Alternatively, fig. 13 is a schematic structural diagram of another display module according to an embodiment of the present invention, referring to fig. 13, the display module has a first length L1 along a second direction Y, and the splicing member 20 has a second length L2. The first length L1 is equal to the second length L2. Specifically, as shown in fig. 13, the first length L1 is equal to the second length L2, that is, when a plurality of display panels 10 are spliced to form a display module, only one splicing member 20 is needed to splice the display module in the second direction Y, so that the number of the splicing members 20 can be reduced.
Optionally, with continued reference to fig. 13 based on the foregoing embodiment, the display module includes a plurality of display panels 10, where the display panels 10 have a third length L3, and the second length L2 satisfies: l2=n×l3. Wherein N is a positive integer greater than or equal to 1. Specifically, as shown in fig. 13, in the second direction Y, the length of the splicing member 20 is an integer multiple of the length of the display panel 10, that is, the splicing member 20 can achieve splicing of multiple groups of display panels 10, and further, flexible splicing of display panels can be achieved on the basis of reducing the number of the splicing member 20.
Alternatively, fig. 14 is another schematic cross-sectional view along the direction E-E' in fig. 1, and as shown in fig. 14, the display panel 10 further includes a substrate 150 and an array layer 160 located at one side of the substrate 150. The surface of the array layer 160 on the side away from the substrate 150 is a first plane 1601, and the surface of the substrate 150 on the side away from the array layer 160 is a second plane 1501. Along a direction perpendicular to the plane of the display panel 10, one end of the side trace 210 near the light emitting side of the display module is a first end 2101, and one end of the side trace 210 near the non-light emitting side of the display module is a second end 2102. The first end 2101 is located on a side of the first plane 1601 remote from the substrate 150 and the second end 2102 is located on a side of the second plane 1501 remote from the array layer 160.
Specifically, in a direction perpendicular to the plane of the display panel 10, the first end 2101 of the side trace 210 is higher than the first plane 1601 of the array layer 160, that is, the first end 2101 is located on a side of the first plane 1601 away from the substrate 150, so that the signal line 110 located on the first plane 1601 at least partially overlaps the first end of the side trace 210 in the first direction X, and electrical connection between the first end 2101 of the side trace 210 and the signal line 110 is ensured. In addition, in a direction perpendicular to the plane of the display panel 10, the second end 2102 of the side trace 210 is lower than the second plane 1501 of the substrate 150, that is, the second end 2102 is located on a side of the second plane 1501 away from the array layer 160, such that the second end 2102 of the side trace 210 extends out of the area overlapping the substrate 150, in other words, the second end 2102 of the side trace 210 is exposed out of the substrate 150, so that the bonding pad of the flexible circuit board 30 can be electrically connected with the second end 2102 of the side trace 210, thereby ensuring electrical connection from front to side and from side to back in the display panel 10.
Alternatively, fig. 15 is another schematic cross-sectional view along the direction E-E' in fig. 1, as shown in fig. 15, both surfaces of the splice member 20 near the display panel 10 include inclined surfaces, in the first direction X, the splice member 20 has a first width D1 at an end near the light emitting side of the display module, and the splice member 20 has a second width D2 at an end near the non-light emitting side of the display module, and the first width D1 is smaller than the second width D2.
Specifically, the two surfaces of the splicing component 20, which are close to the display panel 10, are the first surface DD1 and the second surface DD2, the first surface DD1 and the second surface DD2 are inclined planes, and the width of one end of the splicing component 20, which is close to the light emitting side of the display module, is smaller than the width of one end of the splicing component 20, which is close to the non-light emitting side of the display module, i.e. the cross section of the splicing component 20 is a trapezoid with a narrow upper part and a wide lower part, so that when the display panel 10 is spliced by the splicing component 20, the splice between the display panels 10 can be reduced, and the seamless design is facilitated.
Alternatively, with continued reference to fig. 14, both surfaces of the splice member 20 adjacent to the display panel 10 are perpendicular to the plane of the display panel 10. Specifically, as shown in fig. 14, two surfaces of the splicing member 20, which are close to the display panel 10, are a first surface DD1 and a second surface DD2, the first surface DD1 and the second surface DD2 are perpendicular to the plane where the display panel 10 is located, and the width of the splicing member 20 is uniformly arranged along the direction perpendicular to the plane where the display panel 10 is located, so that alignment and splicing of the display panels 10 and the splicing member 20 are facilitated.
Alternatively, with continued reference to fig. 14, in the first direction X, the splice member 20 has a third width D3, the third width D3 satisfying: d3 is more than or equal to 0.05mm and less than or equal to 0.1mm. Specifically, along the first direction X, if the width of the splicing member 20 is too small, the splicing difficulty of the plurality of display panels 10 is relatively large, if the width of the splicing member 20 is too large, the seamless design of the display module is not facilitated, and then the third width D3 of the splicing member 20 is set to satisfy: d3 is more than or equal to 0.05mm and less than or equal to 0.1mm, and the splicing seams among the display panels 10 are reduced on the basis of reducing the splicing difficulty of the display panels 10.
Based on the same inventive concept, the embodiment of the invention also provides a splicing method of the display module, which is used for splicing to form the display module provided by the embodiment. Fig. 16 is a flowchart illustrating a method for splicing display modules according to an embodiment of the present invention, where, as shown in fig. 16, the method for splicing display modules according to an embodiment of the present invention includes:
s110, manufacturing a plurality of side wires on the first surface and the second surface of the splicing component respectively.
In particular, the splice component may be a glass carrier for enabling splicing of multiple display panels without display. The splicing component comprises a first surface and a second surface, the first surface and the second surface are oppositely arranged, the areas of the first surface and the second surface are both larger than the preset area, namely, the first surface and the second surface are the largest surfaces of the splicing component. And preparing a plurality of side wires on the first surface and the second surface of the splicing component respectively, wherein the extending direction of the side wires can be parallel to the direction of the plane where the display panel is positioned.
And S120, turning over the splicing component so that the first surface and the second surface of the splicing component are used as two surfaces close to the display panel.
Specifically, the splicing component is turned over by a certain angle and is arranged between at least two display panels to be spliced, at this time, the first surface and the second surface of the splicing component are respectively two surfaces close to the display panels, the extending directions of the plurality of side routing wires positioned on the first surface and the second surface are changed from being parallel to the direction of the plane of the display panels to being intersected with the direction of the plane of the display panels.
S130, manufacturing a plurality of signal lines on the second surface of the display panel.
Specifically, the display panel includes a first face, a second face, and a third face. The second face is opposite to the third face, and the second panel is adjacent to the first face. The first faces of the at least two display panels are spliced with each other by the splice member, i.e. the first face of the display panel is one of the plurality of sides of the display panel that is adjacent to the splice member.
A plurality of signal lines are also prepared on the second side of the display panel. The signal lines may include at least one of a scan signal line, a data signal line, a positive power signal line, a negative power signal line, and a reset signal line. When the signal lines include scanning signal lines and data signal lines, the plurality of scanning signal lines extend in a first direction and are arranged in a second direction in the display area, the plurality of data signal lines extend in the second direction and are arranged in the first direction, wherein the first direction is a direction in which the display panel points to the splice member, the second direction intersects the first direction, and the first direction and the second direction are both parallel to a direction of a plane in which the display panel is located. It will be appreciated that, in order to achieve the front-to-side electrical connection of the display panel, the front trace of the display panel needs to be led to the area where the front of the display panel is adjacent to the same side, and then in the area where the second surface of the display panel is adjacent to the first surface, a plurality of signal lines need to be arranged along the first direction and arranged along the second direction, in other words, in the area where the second surface is adjacent to the first surface, both the data signal lines and the scanning signal lines need to be arranged along the first direction, that is, both the data signal lines and the scanning signal lines need to be arranged along the direction close to the splicing member, so that the signal lines and the side traces on the splicing member can be electrically connected.
And S140, splicing the first surfaces of at least two display panels through the splicing component, so that one end of each side line is electrically connected with the signal line in the adjacent display panel on one side of the splicing component, and the other end of each side line is electrically connected with the binding pad of the corresponding flexible circuit board.
Specifically, the side wiring is not prepared on the first surface of the display panel, but one end of the side wiring arranged on the splicing component is electrically connected with the signal wire on the adjacent display panel, so that the electric connection between the front surface and the side surface of the display panel is realized. The other end of the side wiring arranged on the splicing component can be electrically connected with the binding pad of the corresponding flexible circuit board, and the flexible circuit board can provide signals for the signal wires on the corresponding display panel through the side wiring, namely, the electrical connection between the side surface and the back surface in the display panel can be realized through the flexible circuit board. Therefore, wiring is not required to be formed on the first surface and the third surface of the display panel through a film plating process, a patterning process and the like, and the front surface and the side surfaces and the back surface of the display panel can be electrically connected, so that the complexity of the process is greatly simplified, the preparation difficulty of the electrical connection from the front surface to the side surfaces and from the side surfaces to the back surfaces in the display panel is reduced, the preparation yield is improved, and the production cost is reduced.
In summary, in the embodiment of the invention, the plurality of side wires are respectively manufactured on the first surface and the second surface of the splicing component, and the splicing component is turned over, so that the first surface and the second surface of the splicing component are used as two surfaces close to the display panel, the extending directions of the plurality of side wires after turning over intersect with the direction of the plane where the display panel is located, and then one end of the side wire is electrically connected with the signal wire in the adjacent display panel when the display panel is spliced, and the other end of the side wire is electrically connected with the binding pad of the corresponding flexible circuit board. Because the wiring is not required to be formed on the first surface and the back surface of the display panel through a film plating process, a patterning process and the like, the electrical connection from front surface to side surface and from side surface to back surface in the display panel can be realized, the complexity of the process is greatly simplified, the preparation difficulty of the electrical connection from front surface to side surface and from side surface to back surface in the display panel is reduced, the preparation yield is improved, and the production cost is reduced.
Based on the same inventive concept, the embodiment of the present invention further provides a display device, and fig. 17 is a schematic structural diagram of the display device provided by the embodiment of the present invention, as shown in fig. 17, where the display device includes the display module 100 described in any one of the embodiments, so that the display device provided by the embodiment of the present invention has the corresponding beneficial effects in the foregoing embodiments, which are not repeated herein. The display device may be, for example, 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 (16)
1. A display module, comprising: the display device comprises at least two display panels and at least one splicing component, wherein first surfaces of the at least two display panels are spliced with each other through the splicing component;
the second surface of the display panel comprises a plurality of signal lines and a plurality of light emitting units, the signal lines are electrically connected with the light emitting units, and the first surface is adjacent to the second surface; the signal lines extend along a first direction in a region of the second surface adjacent to the first surface, are arranged along a second direction, intersect the first direction, and are parallel to a plane of the display panel;
A plurality of side wires are arranged on two surfaces of the splicing component, which are close to the display panel, and the extending direction of the side wires is intersected with the direction of the plane where the display panel is positioned;
the display module further comprises at least two flexible circuit boards;
one end of the side wire is electrically connected with the signal wire in the adjacent display panel at one side of the splicing component, and the other end of the side wire is electrically connected with the corresponding binding pad of the flexible circuit board.
2. The display module assembly of claim 1, wherein the display module assembly comprises,
along the first direction, the signal line at least partially overlaps the side trace, and the side trace is in direct contact with the signal line.
3. The display module assembly of claim 2, wherein the display module assembly comprises,
the signal line exposes a first edge in the second face at a position close to the edge of the splicing member;
along the second direction, the width of the side trace is different from the width of the first edge.
4. The display module assembly of claim 3, wherein the display module assembly,
the width of the side wire is smaller than that of the first edge along the second direction;
The signal line comprises a first signal line subsection and a second signal line subsection;
the first signal line subsection is positioned at one side of the second signal line subsection, which is close to the splicing component;
and along the second direction, the width of the first signal line subsection is larger than that of the second signal line subsection.
5. The display module assembly of claim 1, wherein the display module assembly comprises,
a plurality of connection pads are arranged in the second surface at the edge position close to the splicing component;
and one end of the side wire is electrically connected with the signal wire in the adjacent display panel through the connecting pad at one side of the splicing component.
6. The display module of claim 1, wherein the two surfaces of the splice member proximate the display panel comprise a first surface and a second surface;
at least part of the side wires in the first surface and at least part of the side wires in the second surface are overlapped in the direction perpendicular to the first surface or the second surface;
or, along the direction perpendicular to the first surface or the second surface, at least part of the side surface wires in the first surface are staggered with at least part of the side surface wires in the second surface.
7. The display module of claim 1, wherein the at least two display panels comprise a first display panel and a second display panel;
the display area of the first display panel is different from the display area of the second display panel;
the density of the side edge wires in the surface of the splicing component, which is close to the first display panel, is different from the density of the side edge wires in the surface of the splicing component, which is close to the second display panel.
8. The display module assembly of claim 7, wherein the display module assembly,
the display area of the first display panel is larger than that of the second display panel;
the density of the side edge wires in the surface of the splicing component, which is close to the first display panel, is greater than the density of the side edge wires in the surface of the splicing component, which is close to the second display panel.
9. The display module of claim 1, wherein in the second direction, the display module has a first length L1 and the splice member has a second length L2;
the second length is equal to the first length.
10. The display module of claim 9, wherein the display module comprises a plurality of the display panels, the display panels having a third length L3;
The second length L2 satisfies:
L2＝N×L3；
wherein N is a positive integer greater than or equal to 1.
11. The display module of claim 1, wherein the display panel further comprises a substrate and an array layer on one side of the substrate;
the surface of the array layer, which is far away from the substrate, is a first plane, and the surface of the substrate, which is far away from the array layer, is a second plane;
along the direction perpendicular to the plane where the display panel is located, one end of the side wiring close to the light emitting side of the display module is a first end, and one end of the side wiring close to the non-light emitting side of the display module is a second end;
the first end is located on a side of the first plane away from the substrate, and the second end is located on a side of the second plane away from the array layer.
12. The display module of claim 1, wherein the two surfaces of the splice member adjacent to the display panel each comprise a bevel, the splice member having a first width at an end adjacent to the light exit side of the display module and a second width at an end adjacent to the non-light exit side of the display module in the first direction, the first width being less than the second width.
13. The display module of claim 1, wherein both surfaces of the splice member adjacent to the display panel are perpendicular to a plane in which the display panel is located.
14. The display module of claim 13, wherein the splice member has a third width D3 along the first direction, the third width D3 satisfying: d3 is more than or equal to 0.05mm and less than or equal to 0.1mm.
15. The splicing method of the display module is characterized by comprising the following steps of:
manufacturing a plurality of side wirings on a first surface and a second surface of a splicing component respectively, wherein the first surface and the second surface are opposite, and the area of the first surface and the area of the second surface are larger than a preset area;
turning over the splicing component so that the first surface and the second surface of the splicing component are used as two surfaces close to the display panel, and the extending directions of the turned side wires are intersected with the direction of the plane where the display panel is located;
manufacturing a plurality of signal lines on a second surface of a display panel, wherein the second surface is adjacent to a first surface, the plurality of signal lines extend along a first direction and are arranged along a second direction, the second direction intersects with the first direction, and the first direction and the second direction are parallel to the direction of a plane where the display panel is positioned;
And splicing the first surfaces of at least two display panels through the splicing component, so that one side of the splicing component is electrically connected with the signal wire in the adjacent display panel at one end of the side wiring, and the other end of the side wiring is electrically connected with the corresponding binding pad of the flexible circuit board.
16. A display device comprising the display module of any one of claims 1-14.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311699458.6A CN117496835A (en) | 2023-12-11 | 2023-12-11 | Display module, splicing method thereof and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311699458.6A CN117496835A (en) | 2023-12-11 | 2023-12-11 | Display module, splicing method thereof and display device |
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| CN117496835A true CN117496835A (en) | 2024-02-02 |
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| CN202311699458.6A Pending CN117496835A (en) | 2023-12-11 | 2023-12-11 | Display module, splicing method thereof and display device |
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| Country | Link |
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| CN (1) | CN117496835A (en) |
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