CN112750885A

CN112750885A - Display panel, display panel unit, display device and display panel manufacturing method

Info

Publication number: CN112750885A
Application number: CN202011628398.5A
Authority: CN
Inventors: 吴莹莹; 刘昕昭
Original assignee: Xiamen Tianma Microelectronics Co Ltd
Current assignee: Xiamen Tianma Microelectronics Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-05-04
Anticipated expiration: 2040-12-30
Also published as: CN112750885B

Abstract

The application discloses a display panel, a display panel unit, a display device and a display panel manufacturing method, wherein the display panel comprises a first substrate and a second substrate, the first substrate comprises a first substrate base plate, a plurality of first signal wires and a plurality of first signal conducting pieces, the first signal wires are positioned on one side, facing the second substrate, of the first substrate base plate, one first signal conducting piece is electrically connected with at least one first signal wire, and the plurality of first signal conducting pieces are positioned on one side, far away from a display area, of a frame rubber area in a first direction and are arranged along a second direction; the conductive adhesive is connected with the first signal conduction piece; the first retaining wall comprises first blocking parts, and the first blocking parts are arranged between any two adjacent first signal conduction parts; the outer end edges of the first signal conductors and the first stoppers in the first direction overlap with the edge of the first substrate base plate. The display panel, the display panel unit, the display device and the display panel manufacturing method are beneficial to realizing high screen occupation ratio and narrow frame of the display screen.

Description

Display panel, display panel unit, display device and display panel manufacturing method

Technical Field

The invention belongs to the technical field of display, and particularly relates to a display panel, a display panel unit, a display device and a display panel manufacturing method.

Background

With the continuous maturation and development of display technologies, the requirements of consumers on display devices are higher and higher, and one of them is that consumers prefer display devices with larger display screen occupation ratio and narrower frame setting. In the prior art, the form that the upper and lower plates are arranged in the sealed space formed by the package to realize the signal overlapping is generally adopted, but the signal overlapping part is generally formed by stacking the film layers, so that the enough overlapping area needs to be ensured, the space in a larger packaging area is occupied, the frame is larger, and the actual display area of the display screen is smaller.

Disclosure of Invention

The invention aims to: the display screen is favorable for realizing high screen occupation ratio and narrow frame.

In a first aspect, to solve the above technical problem, an embodiment of the present invention provides a display panel, including a display area and a non-display area, where the non-display area includes a frame glue area, and the frame glue area surrounds the display area, and the display panel further includes: the display panel comprises a first substrate and a second substrate, wherein the first substrate comprises a first substrate base plate, a plurality of first signal wires and a plurality of first signal conducting pieces, the first signal wires are positioned on one side, facing the second substrate, of the first substrate base plate, one first signal conducting piece is electrically connected with at least one first signal wire, the first signal conducting pieces are positioned on one side, away from the display area, of the frame rubber area in the first direction and are arranged along the second direction, and the first direction is intersected with the second direction; the second substrate comprises a second substrate base plate and a plurality of second signal lines, and the plurality of second signal lines are positioned on one side, facing the first substrate, of the second substrate base plate; the conductive adhesive is connected with the first signal conductor and is positioned between the first substrate base plate and the second substrate base plate; the first retaining wall is positioned between the first substrate base plate and the second substrate base plate and comprises a first blocking piece, and the first blocking piece is arranged between any two adjacent first signal conduction pieces; wherein outer end edges of the first signal conductor and the first stopper in the first direction overlap with an edge of the first substrate base plate.

In a second aspect, based on the same inventive concept, an embodiment of the present invention further provides a display panel unit, including a display area, a non-display area, and a to-be-cut area, where the non-display area includes a frame glue area, the frame glue area surrounds the display area, the to-be-cut area is located on a side of the non-display area away from the frame glue area at least in a first direction, a cutting line is disposed between the to-be-cut area and the non-display area, and the display panel unit further includes: the display device comprises a first substrate unit and a second substrate unit, wherein the first substrate unit comprises a first substrate unit, a plurality of first signal wires and a plurality of first signal conducting pieces, the first signal wires are positioned on one side, facing the second substrate unit, of the first substrate unit, one first signal conducting piece is electrically connected with at least one first signal wire, the first signal conducting pieces are positioned on one side, away from the display area, of the frame rubber area in the first direction and are arranged along the second direction, and the first direction is intersected with the second direction; the second base plate unit comprises a second substrate base plate unit and a plurality of second signal lines, and the plurality of second signal lines are positioned on one side, facing the first base plate unit, of the second substrate base plate unit; the conductive adhesive is connected with the first signal conductor and is positioned between the first substrate base plate unit and the second substrate base plate unit; the first retaining wall is positioned between the first substrate base plate unit and the second substrate base plate unit and comprises a first blocking piece, and the first blocking piece is arranged between any two adjacent first signal conduction pieces; wherein at least portions of the first signal conductor and the first barrier member are located at the cutting line.

In a third aspect, based on the same inventive concept, embodiments of the present invention further provide a display device, including the display panel described above.

In a fourth aspect, based on the same inventive concept, an embodiment of the present invention further provides a method for manufacturing a display panel, including: providing a display panel mother board; cutting a mother board of a display panel for the first time to obtain a plurality of cutting units; arranging conductive adhesive between the first substrate unit and the second substrate unit of each cutting unit to obtain a display panel unit, wherein the display panel unit is the display panel unit described in the above; and carrying out secondary cutting along the cutting line of the display panel unit, and removing the area to be cut of the display panel unit to obtain the display panel.

By adopting the technical scheme of the embodiment of the invention, when the conductive adhesive is dispensed to the position of the first signal conducting piece and the outer edge of the substrate is subjected to processing such as conductive adhesive sealing and the like in the process of manufacturing the display panel by the aid of the first blocking piece arranged between the adjacent first signal conducting pieces, the end parts of the first blocking piece and the first signal conducting piece extend to the edge position of the first substrate at one side where the first signal conducting piece is correspondingly arranged, so that the first blocking piece can block the first signal conducting piece to prevent the adjacent first signal conducting pieces from being electrically connected through the conductive adhesive and further causing short circuit in corresponding operation. Through the form that the tip that all is located first substrate base plate with first signal conduction spare and first fender spare all is in the border position of first substrate base plate, when guaranteeing that there is sufficient signal overlap area in order to avoid the overlap joint bad, when carrying out the point and gluing, edge seals operation such as glue, need not additionally to set up the space of keeping away of edge to avoid the short circuit between the first signal conduction spare, thereby on display panel's the high basis that accounts for the screen ratio, be favorable to the realization of narrow frame.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a cross-sectional front view of a display panel according to an embodiment of the present invention;

fig. 2 is a top view of a first substrate of a display panel according to an embodiment of the invention;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

FIG. 4 is a top view of a first substrate of another display panel according to an embodiment of the present invention;

FIG. 5 is a partial enlarged view of portion B of FIG. 4;

FIG. 6 is a top view of a first substrate of another display panel according to an embodiment of the present invention;

FIG. 7 is an enlarged view of a portion C of FIG. 6;

FIG. 8 is a top view of a first substrate with third barriers according to an embodiment of the present invention;

FIG. 9 is a top view of another embodiment of a first substrate with third barriers;

fig. 10 is a top view of a first substrate with a second retaining wall according to an embodiment of the present invention;

FIG. 11 is a cross-sectional front view of another display panel provided in accordance with an embodiment of the present invention;

FIG. 12 is a cross-sectional front view of another display panel according to an embodiment of the present invention;

fig. 13 is a cross-sectional front view of a display panel unit according to an embodiment of the present invention;

FIG. 14 is a top view of a first substrate unit according to an embodiment of the invention;

FIG. 15 is a top view of another first substrate unit provided in accordance with an embodiment of the present invention;

fig. 16 is a partially enlarged view of portion E of fig. 15;

fig. 17 is a partially enlarged view of a portion E of fig. 15 where a second retaining wall is provided;

fig. 18 is a flowchart of a method for manufacturing a display panel according to an embodiment of the present invention.

In the drawings:

1-a display panel; 11-a first substrate; 111-a first substrate base plate; 111 a-edge position; 112-a first signal conductor; 113-a first signal line; 12-a second substrate; 121-a second substrate base; 122-a second signal line; 123-a second signal conductor; 13-a first retaining wall; 131-a first barrier; 131 a-a first end; 131 b-a second end; 132-a second barrier; 132 a-a second sub-second barrier; 132 b-first sub-second barriers; 133-a third barrier; 14-conductive glue; 15-frame glue; 16-chip/circuit board; 17-a second retaining wall; 18-a flexible printed circuit board; 2-a display panel unit; 21-a first substrate unit; 22-a second substrate unit; 23-a cutting line; d1-display area; d2-non-display area; d3-frame glue area; d4-area to be cut; D41-Overflow zone; l-a first direction; w-a second direction; m1 — second distance; m2 — first distance; m3-preset minimum distance; m4-width.

Detailed Description

Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. It should be noted that the embodiments provided in the embodiments of the present invention can be combined with each other without contradiction.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

For better understanding of the present invention, the display panel unit, the display device and the method for manufacturing the display panel according to the embodiments of the present invention are described in detail below with reference to fig. 1 to 18.

In a Display device having a Display function, such as a mobile phone and a computer, the Display screen used may be an OLED (Organic Light-Emitting Diode) or an LCD (Liquid Crystal Display) according to the application field, and the present invention is not limited thereto.

As the demands of users on the display devices to be used become higher, designs with a large screen occupation ratio and a narrow bezel are favored by more and more users. However, in some designs, the components for signal overlapping in the display screen are generally overlapped by the film layer stack height, for example, the signal overlapping of the touch signal lines between different substrates is performed by a built-in touch display screen, and such an overlapping manner is prone to poor overlapping once the height fluctuation occurs, and is located in the packaging space of the display area D1, so that the area of the actual display area D1 of the display area D1 is reduced. In order to ensure the yield of the bonding, a sufficient bonding area needs to be ensured, and a certain space is occupied, so that the frame without the display capability part is larger.

In order to avoid the signal overlapping part occupying too much space in the display area D1 and causing a small display area, it can be shifted to the position of the non-display area D2 to enlarge the area that can be displayed in the display area D1 for convenient use. However, in the process of manufacturing the display screen, the signal overlapping parts located in the non-display area D2 are easily short-circuited by operations such as glue sealing, but if short-circuiting is to be avoided, enough space needs to be left in the non-display area D2 to avoid the short-circuiting caused by the glue sealing, so that the frame is larger, and a narrow frame cannot be realized.

In order to realize a narrow frame and a larger screen occupation ratio of a display screen, the present application provides a display panel 1, and referring to fig. 1 and fig. 2, the display panel 1 includes a display region D1 and a non-display region D2, the non-display region D2 includes a frame glue region D3, the frame glue region D3 surrounds the display region D1, the display panel 1 further includes a first substrate 11 and a second substrate 12, the first substrate 11 and the second substrate 12 are combined by a frame glue 15 located in the frame glue region D3 to form a structure having a sealed space for setting components required for display so as to realize display of the display screen, and then the operations of sealing glue, binding and connecting electronic devices such as a chip/circuit board 16 and the like in the non-display region D2 are performed to finally form the display panel 1, and specific working steps and corresponding set components are not described one by one.

In this embodiment, the sealant 15 may be glass frit (frit). After the glass powder is arranged in the frame rubber area D3, the glass powder needs to be melted by laser heating, and after the melted glass powder is solidified again, the first substrate 11 and the second substrate 12 are bonded and fixed.

Optionally, when the display panel 1 is an LCD display panel, the sealant 15 may be thermosetting adhesive, photosensitive adhesive, or post-photosensitive thermosetting adhesive. When the sealant 15 is thermosetting adhesive, thermosetting adhesive may be coated on the sealant region D3 of the first substrate 11 and the second substrate 12, and after the two substrates are aligned up and down, the baking oven is used to cure the thermosetting adhesive, so as to realize bonding and fixing of the first substrate 11 and the second substrate 12.

The first substrate 11 includes a first substrate 111, a plurality of first signal lines 113 located on one side of the first substrate 111 facing the second substrate 12, and a plurality of first signal conducting elements 112, where the first signal lines 113 may be, for example, first touch signal lines in a touch layer disposed on the first substrate 11 of the OLED for implementing a touch function, one first signal conducting element 112 is electrically connected to at least one first touch signal line, the plurality of first signal conducting elements 112 are located on one side of the frame rubber region D3 away from the display region D1 in the first direction L and are arranged along the second direction W, and the first direction L intersects the second direction W, as shown in fig. 1, and the first direction L and the second direction W may be perpendicular to each other. The second substrate 12 includes a second substrate 121 and a plurality of second signal lines 122, the second signal lines 122 may be, for example, second touch signal lines for implementing a touch function, and the plurality of second signal lines 122 are located on a side of the second substrate 121 facing the first substrate 11. The first substrate 11 and the second substrate 12 are arranged oppositely, the first substrate 11 and the second substrate 12 are connected through the frame glue 15 arranged in the frame glue area D3 to form a display area with a closed space, at this time, the first signal conducting piece 112 is located outside the closed space, and the conductive glue 14 is arranged at the position corresponding to the first signal conducting piece 112, so that the conductive glue 14 is located between the first substrate 111 and the second substrate 121, and the conductive glue 14 is connected with the first signal conducting piece 112, and can be used for enabling the upper substrate and the lower substrate to realize signal lap joint of touch signals.

Optionally, the conductive adhesive 14 is selected from an adhesive such as silver adhesive or other conductive materials, and the conductive adhesive 14 may be dispensed on the first signal conductor 112 by a dispensing device.

A first retaining wall 13 is further disposed between the first substrate 111 and the second substrate 121, the first retaining wall 13 may be, for example, a plurality of organic films disposed on the first substrate 111 or the second substrate 121, the organic films are formed on the corresponding substrates through exposure, development, and the like, and the plurality of organic films stacked for multiple times finally form the first retaining wall 13 disposed between the first substrate 111 and the second substrate 121. The first retaining wall 13 includes a first blocking member 131, and the first blocking member 131 is disposed between any two adjacent first signal conductors 112; wherein outer end edges of the first signal conductors 112 and the first blocking members 131 in the first direction L overlap with an edge of the first substrate base 111. In the process of manufacturing the display panel 1, when the conductive adhesive 14 is dispensed to the position of the first signal conducting element 112 and the outer edge of the substrate is subjected to processes such as sealing the conductive adhesive 14, etc. by the first blocking member 131 disposed between the adjacent first signal conducting elements 112, the first blocking member 131 and the end portion of the first signal conducting element 112 are extended to the edge position 111a of the first substrate 111 at the side where the first signal conducting element 112 is correspondingly disposed, so that in the corresponding operation, the blocking by the first blocking member 131 does not cause the electrical connection between the adjacent first signal conducting elements 112 through the conductive adhesive 14 and further cause a short circuit. Through the form that the tip that all is located first signal conduction spare 112 and first blockking 131 is in the marginal position 111a of first substrate base plate 111, when guaranteeing that there is sufficient signal overlap area in order to avoid the overlap joint bad, when carrying out some glue, edge seal glue etc. operation, need not additionally to set up the space of keeping away of edge, in order to avoid the short circuit between the first signal conduction spare 112, thereby on the basis of the high screen ratio that accounts for of display panel 1, be favorable to the realization of narrow frame.

In some embodiments, referring to fig. 3, the first blocking member 131 is at least a plate-shaped structure disposed between adjacent first signal conductors 112, the first blocking member 131 extends in the first direction L, and along the first direction L, the first blocking member 131 includes a first end 131a and a second end 131b located at two sides, the first end 131a is located at an edge of the first substrate 111, that is, the first end 131a overlaps with an edge position 111a of the first substrate 111, a minimum distance from the second end 131b to the sealant region D3 is a first distance M2, a minimum distance from the first signal conductor 112 to the sealant region D3 is a second distance M1, and the first distance M2 is less than or equal to the second distance M1. On the basis that the first end 131a of the first blocking member 131 is overlapped with the edge position 111a of the first substrate 111, the length of the first blocking member 131 extending in the first direction L is at least greater than or equal to the length of the first signal conductor 112 in the first direction L, so that the purpose of spacing the adjacent first signal conductors 112 can be achieved through the first blocking member 131, and the situation that the conductive adhesives 14 on the adjacent first signal conductors 112 are connected with each other and further short circuit is caused due to the flowing performance of the conductive adhesives 14 on the adjacent first signal conductors 112 is avoided.

With continued reference to fig. 3, only one first blocking member 131 may be disposed between any two adjacent first signal conductors 112 for separating the adjacent first signal conductors 112. So that the adjacent first signal conductors 112 can be separated by the first blocking member 131 to avoid short circuit, and the complexity and weight of the first blocking member 131 are reduced, and the assembly is simple and easy.

In this embodiment, referring to fig. 4, at least two first blocking parts 131 may be disposed between any two adjacent first signal conductors 112, and a preset minimum distance M3 exists between two adjacent first blocking parts 131 between two adjacent first signal conductors 112. Optionally, two first blocking pieces 131 are disposed between any two adjacent first signal conductors 112, in the two first blocking pieces 131, a space is provided between the first blocking pieces 131 on the side where the first blocking pieces 131 are relatively close to, and at least the preset minimum distance M3 is provided at the space, by such a design, when one of the first blocking pieces 131 overflows the conductive adhesive 14 blocked by the first blocking piece 131 due to a problem, the amount of the flowing conductive adhesive 14 to the other blocking piece can be reduced by the reserved preset minimum distance M3, and the conductive adhesive 14 can be blocked by the other first blocking piece 131, so that it is ensured that no short circuit occurs between the adjacent first signal conductors 112, and the performance of the first blocking piece 131 for avoiding the short circuit by the space between the adjacent first signal conductors 112 is improved. Of course, 3, 4 or more first blocking members 131 may be disposed between two adjacent first signal conductors 112, and are not limited in this regard.

Optionally, for two first stoppers 131 between each adjacent first signal conductor 112, the preset minimum distance M3 is set between the first stoppers 131, and in order to ensure better effect, the blocking pressure of the first stoppers 131 can be increased by alleviating the overflow of the excessive conductive adhesive 14 to the position of the first stopper 131 on the other side through the increase of the flowing distance, and the preset minimum distance M3 is greater than or equal to the width M4 of the first signal conductor 112 in the second direction W.

Referring to fig. 6 and 7, when two first blocking members 131 are disposed at positions between adjacent first signal conductors 112, the first wall 13 further includes a second blocking member 132, the second blocking member 132 does not overlap with the first signal conductors 112 in the first direction L and is at least located between any adjacent two first signal conductors 112, and the second blocking member 132 is connected to any adjacent first blocking member 131. In the position between the adjacent first signal conductors 112, the first blocking member 131 and the second blocking member 132 are connected to form a protruding structure toward the edge position 111a, and when the operation of filling the conductive adhesive 14 between the first substrate 11 and the second substrate 12 corresponding to the position of the first signal conductor 112, or sealing the edge position 111a between the first substrate 11 and the second substrate 12, etc., the second blocking member 132 can prevent the excessive conductive adhesive 14 from being accumulated at the position between the first blocking members 131, and due to its own flow performance, the conductive adhesive 14 may bypass the first blocking members 131 and contact the first signal conductor 112 on the side close to the display area D1, thereby causing a short circuit.

Optionally, an edge of the second blocking member 132 away from the frame adhesive region D3 in the first direction L overlaps with an edge of the first substrate base 111. By providing the second blocking member 132 to at least partially overlap the edge position 111a of the first substrate base 111, no recess is generated between the second blocking member 132 and the first blocking member 131 toward the edge position 111a side in the first direction L after the second blocking member 132 is connected to the first blocking member 131. The conductive adhesive 14 is not stacked, and the situation that the adjacent first signal conductors 112 are connected due to excessive stacking and overflow of the conductive adhesive 14 is avoided.

Specifically, the second blocking member 132 may include a first sub-second blocking member 132b and a second sub-second blocking member 132a, the second sub-second blocking member 132a is disposed between the adjacent first signal conductors 112, and only one side of the first sub-second blocking member 132b is disposed with the first signal conductor 112 in the second direction W. The first sub second barrier 132b and the second sub second barrier 132a are disposed between the outermost first signal conductor 112 and the side edge of the first substrate 111 along the second direction W, so that the first sub second barrier 132b and the second sub second barrier 132a are disposed on the first substrate 111, and the gap between the first signal conductors 112 is entirely covered, so that the conductive paste 14 does not move from the gap between the first signal conductors 112, the gap between the first signal conductor 112 and the side edge of the first substrate 111 along the first direction L to the display area D1, thereby blocking the conductive paste 14.

In some embodiments, referring to fig. 8 and 9, the first retaining wall 13 further includes a third stopping member 133, the third stopping member 133 is located between the first signal conductor 112 and the frame glue region D3 and overlaps with the first signal conductor 112 in the first direction L, and the third stopping member 133 is connected to any adjacent first stopping member 131. By the provision of the third blocking member 133, a groove structure is formed in combination with the first blocking member 131, the opening of the groove being directed toward the edge position 111a of the first substrate base 111. The first signal conductor 112 is disposed in the groove, so that the first signal conductor 112 is surrounded by the groove, and the possibility of the conductive adhesive 14 flowing in other directions is blocked.

When the first barrier 131, the second barrier 132, and the third barrier 133 are disposed on the first substrate 111 in combination, the first wall 13 can not only separate the adjacent first signal conductors 112 to prevent short circuit, but also separate the first signal conductors 112, the conductive paste 14, and the like from the display region D1 through the first wall 13, so as to prevent the conductive paste 14 from flowing into the display region D1 along the first direction L and affecting the display performance.

Optionally, referring to fig. 10, on the basis of the first retaining wall 13, a second retaining wall 17 may be further included, where the second retaining wall 17 is located between the first retaining wall 13 and the frame glue region D3, so that the second retaining wall 17 is used in cooperation with the first retaining wall 13, the blocking performance of the conductive adhesive 14 is further ensured, and the conductive adhesive 14 is prevented from flowing into the display region D1.

In some embodiments, referring to fig. 11 and 12, for the first retaining wall 13 disposed between the first base plate 11 and the second base plate 12, the first retaining wall 13 may be disposed on the first substrate base plate 111 or may be disposed on the second substrate base plate 121, and similarly, when the second retaining wall 17 is disposed, the second retaining wall 17 may be disposed on any side of the first substrate base plate 111 and the second substrate base plate 121, and the second retaining wall 17 may be disposed on the same substrate base plate as the first retaining wall 13 or may be disposed on a different substrate base plate, which is not limited herein.

When the first retaining wall 13 is located on the side of the first substrate base 111 facing the second substrate base 121, the minimum distance from the first retaining wall 13 to the first substrate base 111 is greater than the maximum distance from the first signal conductor 112 to the first substrate base 111 in the thickness direction of the display panel 1. So that the first retaining wall 13 can at least shield the first signal transmission element 112, and the short circuit between the first signal transmission elements 112 is avoided by the arrangement of the first retaining wall 13, thereby realizing a narrow frame.

Optionally, when the first retaining wall 13 is located on the first substrate base 111, the first retaining wall 13 contacts the second substrate 12. When the first retaining wall 13 is located on the side of the second substrate 121 facing the first substrate 111, the first retaining wall 13 contacts the first substrate 11. By extending the first retaining wall 13 disposed on the first substrate 11 or the second substrate 12 to the other substrate in a contact fit manner, the first retaining wall 13 disposed on the first substrate 11 or the second substrate 12 can block the space between the display area D1 and the conductive adhesive 14 in the first direction L, so that the conductive adhesive 14 does not flow into the display area D1 from the gap between the first substrate 11 and the second substrate 12 beyond the first retaining wall 13, and the influence on the components in the display area D1 is avoided.

It should be emphasized that, for the first retaining wall 13 and the second retaining wall 17, no matter they are located on the first substrate base 111 or the second substrate base 121, when extending to the other substrate base, the cross-sectional area of the retaining wall may be always maintained to be equal as shown in fig. 11, or may be gradually reduced as shown in fig. 12 along the extending direction, and is not limited specifically herein.

In some embodiments, referring to fig. 11, the second substrate 12 further includes a plurality of second signal conductors 123, and one second signal conductor 123 is electrically connected to at least one second signal line 122, for example, when the first signal line 113 is a first touch signal line, the first touch signal line is connected to the first signal conductor 112, and when the second signal line 122 is a second touch signal line, one end of the second touch signal line is connected to the external chip/circuit board 16, and the other end is connected to the second signal conductor 123, the second signal conductor 123 is located on a side of the first wall 13 away from the frame glue region D3, the conductive glue 14 is electrically connected to the first signal conductor 112 and the second signal conductor 123, respectively, an edge of an outer end of the second signal conductor 123 in the first direction L overlaps an edge of the second substrate 121, so as to realize signal bonding of the upper and lower substrate touch signals outside the display region D1, and the design of a narrow frame is realized.

In some embodiments, referring to fig. 12, the display panel 1 further includes a flexible printed circuit board 18, and the flexible printed circuit board 18 is electrically connected to the conductive paste 14. So as to save the space for binding the flexible printed circuit board 18 in the non-display area D2 while realizing the signal lap joint and the connection with the outside by providing the flexible printed circuit board 18 at the side, thereby realizing a narrow bezel.

The present application provides a display device, which includes the display panel 1 described in the above embodiments, and the display device may be an OLED or an LCD, and is not limited herein. When the display device is an LCD and the display panel 1 is a liquid crystal display panel, the second substrate 12 may be a TFT array substrate, the first substrate 11 may be a color film substrate, and the LCD may further include a liquid crystal molecule layer. When the display device is an OLED and the display panel 1 is an OLED display panel, the second substrate 12 may be a TFT array substrate, the first substrate 11 may be an encapsulated glass cover plate, and the OLED may further include a cathode, an anode and a light emitting functional layer between the cathode and the anode.

The present application further provides a display panel unit 2, referring to fig. 13 and 14, on the basis of the display panel 1 of the above embodiment, the display panel unit 2 further includes a to-be-cut region D4, in this embodiment, the to-be-cut region D4 is located on a side of the non-display region D2 away from the display region D1 along the first direction L, a contact portion between the to-be-cut region D4 and the non-display region D2 has a cutting line 23, an overflow region D41 is located on a side of the to-be-cut region D4 facing the cutting line 23, the to-be-cut region D4 is cut along the cutting line 23 to obtain the display panel 1 in the above embodiments, and the edge position 111a in the display panel 1 is equivalent to the position of the cutting line 23 when the display panel unit 2 is not cut. That is, the display panel unit 2 includes a first substrate unit 21 and a second substrate unit 22, the first substrate unit 21 includes a first substrate unit, the first substrate unit can be disposed with the corresponding first signal line 113 and the first signal conductor 112, the second substrate unit 22 includes a second substrate unit 121, the second substrate unit 121 can be disposed with the corresponding second signal line 122 and the second signal conductor 123, and for the specific arrangement form of the first signal line 113, the first signal conductor 112, the second signal line 122, and the second signal conductor 123 in the corresponding substrate unit, referring to the embodiments of the display panel 1, similarly, the first substrate 11 and the second substrate 12 in the display panel 1 can be obtained by cutting the to-be-cut region D4 of the first substrate unit 21 and the second substrate unit 22 along the cutting line 23, and details thereof are omitted.

In the display panel unit 2, at least the first signal conductor 112 and the first stopper 131 are located at the cutting line 23, and referring to fig. 13, after the first substrate unit 21 and the second substrate unit 22 are connected by the sealant 15, in order to enable the first signal conductor 112 to communicate with the signal line located in the second substrate unit 22, it is necessary to fill the conductive adhesive 14 at a position corresponding to the first signal conductor 112 to enable signal connection in the upper and lower substrate units. When the conductive adhesive 14 is filled, since the conductive adhesive 14 has fluidity and needs to fill the position of the first signal conducting element 112 through the space of the area D4 to be cut, the conductive adhesive 14 easily overflows to the overflow area D41, and even the overflowing conductive adhesive 14 connects the adjacent first signal conducting elements 112, thereby causing a short circuit. In order to avoid short circuit caused by the conductive adhesive 14 connecting the adjacent first signal conductors 112, the conductive adhesive 14 connecting the adjacent first signal conductors 112 in the overflow area D41 can be removed while the region to be cut D4 is cut and removed along the cutting line 23, thereby obtaining the display panel 1 in the above embodiments.

In an embodiment, referring to fig. 14, in the first substrate base unit of the display panel unit 2, the outer end edges of the first signal conductor 112 and the first blocking member 131 in the first direction L overlap the cutting line 23, and after the region D4 to be cut is cut along the cutting line 23, the position corresponding to the cutting line 23 is the edge position 111a in the first substrate base 111 in the display panel 1, so as to obtain the display panel 1 with a narrow frame.

In one embodiment, referring to fig. 15, in the first substrate base unit of the display panel unit 2, at least one of the first signal conductor 112 and the first blocking member 131 can partially extend to the to-be-cut region D4. With this kind of setting, when carrying out some glue, sealing operations such as conducting resin 14 to display panel unit 2, waiting to cut district D4 can leave sufficient operating space, be convenient for fill conducting resin 14 to corresponding position, and need not to consider the problem of connecting through conducting resin 14 between the first signal conductor 112 that is located waiting to cut district D4 position, improved the efficiency that conducting resin 14 filled. After the filling, the area to be cut D4 is cut off along the cutting line 23, and the part of the conductive adhesive 14 connected with the first signal transmission member to cause the short circuit is cut off, so that the narrow frame is realized while the short circuit is avoided.

Alternatively, referring to fig. 16, when extending a portion of the first signal conductor 112 to the to-be-cut region D4, an outer end edge of the first signal conductor 112 in the first direction L overlaps an edge of the to-be-cut region D4 to edge the arrangement of the first signal conductor 112 and the conductive paste 14. When the corresponding first blocking member 131 also partially extends to the to-be-cut region D4, the second blocking member 132 connecting the two first blocking members 131 located in the adjacent first signal conductors 112 may be located on the cutting line 23, may also be located in the to-be-cut region D4, and even the second blocking member 132 may be located at the edge of the to-be-cut region D4 on the side away from the cutting line 23 along the first direction L. When the second blocking member 132 is located on the cutting line 23, during the cutting process along the cutting line 23, a part of the second blocking member 132 may be cut off at the same time, or all of the second blocking member 132 may be cut off, or no second blocking member 132 is cut off, and is not particularly limited herein.

In an embodiment, referring to fig. 17, when the second retaining wall 17 is disposed between the first substrate unit and the second substrate unit 121, the first retaining wall 13 may be adjusted according to the arrangement of the first retaining wall. When the first retaining wall 13 is partially located in the region to be cut D4, the second retaining wall 17 may be configured to have a structure partially located in the region to be cut D4, or may be configured to have a structure entirely located in the non-display region D2, which is not specifically limited herein.

The application also provides a display panel manufacturing method, which is used for efficiently manufacturing the display panel 1 with a high screen occupation ratio and a narrow frame, and with reference to fig. 18, the method comprises the following specific steps:

s1: providing a display panel mother board;

s2: cutting a mother board of a display panel for the first time to obtain a plurality of cutting units;

s3: disposing a conductive adhesive 14 between the first substrate unit 21 and the second substrate unit 22 of each cutting unit to obtain the display panel unit 2;

s4: and performing second cutting along the cutting line 23 of the display panel unit 2 to remove the region D4 to be cut of the display panel unit 2, thereby obtaining the display panel 1.

Specifically, the display panel mother board provided in S1 includes a first substrate mother board and a second substrate mother board, the first substrate mother board and the second substrate mother board respectively have a plurality of display regions D1 and a sealant region D3 surrounding each display region D1, a sealant 15 is disposed in the sealant region D3 of one of the first substrate mother board and the second substrate mother board, and the first substrate mother board and the second substrate mother board are aligned to form a combined board, so that the sealant 15 connects the first substrate mother board and the second substrate mother board to each other, thereby obtaining the display panel mother board. Before the first substrate mother board and the second substrate mother board are aligned to be laminated, different film layers or other structures for displaying are formed in the display area D1, which is not specifically described herein.

In the plurality of cutting units obtained when the mother board of the display panel formed after the mother board is cut for the first time, each corresponding cutting unit is formed with a signal line and a signal conducting member correspondingly connected in advance at a corresponding position, and a first retaining wall 13 and a second retaining wall 17 for separating, in the embodiment, the specific arrangement form thereof is referred to the arrangement form in the display panel 1 and the display panel unit 2, and is not emphasized here.

In one embodiment, referring to fig. 13, the first substrate unit 21 of the cutting unit includes a plurality of first signal conductors 112, and the second substrate unit 22 of the cutting unit includes a plurality of second signal conductors 123, and the first signal conductors 112 and the second signal conductors 123 are aligned in a thickness direction of the display panel mother panel after the panel is combined. In each of the formed cutting units, the conductive paste 14 is disposed between the first substrate unit 21 and the second substrate unit 22 of each of the cutting units, and the plurality of first signal conductors 112 and the plurality of second signal conductors 123 are electrically connected correspondingly through the conductive paste 14, so as to obtain the display panel unit 2 having the to-be-cut region D4 in S3.

Taking the display panel unit 2 in the step S3, due to the arrangement of the first retaining wall 13, when the conductive adhesive 14 electrically connects the adjacent first signal conductors 112 by dispensing the adhesive at the edge position 111a of the non-display area D2 or sealing the conductive adhesive 14 at other positions, even if there is a part of the first signal conductor 112 located in the region D4 to be cut, the region D4 to be cut in the display panel unit 2 is cut along the cutting line 23 for the second time in the step S4, and then the part connecting the first signal transmission element and the conductive adhesive 14 can be cut off, so that the desired display panel 1 can be obtained, in the display panel 1, the first signal conductors 112 are not connected by the conductive adhesive 14 to form a short circuit, and a narrow frame is realized.

After the region D4 to be cut in the display panel unit 2 is cut for the second time along the cutting line 23 by the step of S4, in order to prevent the first signal conductor 112, the second signal conductor 123 and the portion of the conductive paste 14 located at the edge position 111a from being exposed to the outside, an insulating paste sealing process may be performed on the side edges of the first signal conductor 112, the second signal conductor 123 and the conductive paste 14 corresponding to the side of the edge position 111 a. Or, the peripheral edge portion may be directly subjected to the operation of sealing the insulating adhesive along the circumferential direction of the frame adhesive region D3 after the second cutting, which is not particularly limited herein.

Optionally, before the display panel is mother-board, when the first signal conductors 112 are formed only on the first substrate mother board, in the cutting unit formed after the first cutting, after the plurality of first signal conductors 112 are electrically connected through the conductive adhesive 14, and then the second cutting is performed through the step of S4, the flexible circuit board is bound and connected with the plurality of first signal conductors 112 and the conductive adhesive 14, so as to finally obtain the display panel 1 shown in fig. 12.

The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.

Claims

1. A display panel, includes display area and non-display area, non-display area includes frame gum area, frame gum area surrounds the display area, its characterized in that, display panel still includes:

the display panel comprises a first substrate and a second substrate, wherein the first substrate comprises a first substrate base plate, a plurality of first signal wires and a plurality of first signal conducting pieces, the first signal wires are positioned on one side, facing the second substrate, of the first substrate base plate, one first signal conducting piece is electrically connected with at least one first signal wire, the first signal conducting pieces are positioned on one side, away from the display area, of the frame rubber area in the first direction and are arranged along the second direction, and the first direction is intersected with the second direction; the second substrate comprises a second substrate base plate and a plurality of second signal lines, and the plurality of second signal lines are positioned on one side, facing the first substrate, of the second substrate base plate;

the conductive adhesive is connected with the first signal conductor and is positioned between the first substrate base plate and the second substrate base plate;

the first retaining wall is positioned between the first substrate base plate and the second substrate base plate and comprises a first blocking piece, and the first blocking piece is arranged between any two adjacent first signal conduction pieces;

wherein outer end edges of the first signal conductor and the first stopper in the first direction overlap with an edge of the first substrate base plate.

2. The display panel according to claim 1, wherein the first blocking member extends in the first direction, and along the first direction, the first blocking member includes a first end and a second end located on two sides, the first end is located at an edge of the first substrate, a minimum distance from the second end to the sealant region is a first distance, a minimum distance from the first signal conducting member to the sealant region is a second distance, and the first distance is smaller than or equal to the second distance.

3. The display panel according to claim 1, wherein at least two first blocking members are disposed between any two adjacent first signal conductors, and a predetermined minimum distance is provided between two adjacent first blocking members between two adjacent first signal conductors.

4. The display panel of claim 3, wherein the preset minimum distance is equal to or greater than a width of the first signal conductor in the second direction.

5. The display panel according to claim 3, wherein the first blocking walls further comprise second blocking members that do not overlap with the first signal conductors in the first direction and are located at least between any adjacent two of the first signal conductors, the second blocking members being connected to any adjacent first blocking members.

6. The display panel according to claim 5, wherein one side edge of the second blocking member away from the sealant region in the first direction overlaps with an edge of the first substrate.

7. The display panel according to claim 5, wherein the second blocking member comprises a first sub-second blocking member, and only one side of the first sub-second blocking member is provided with the first signal conductor in the second direction.

8. The display panel of claim 1, wherein the first blocking wall further comprises a third blocking member, the third blocking member is located between the first signal conductor and the frame glue region and overlaps with the first signal conductor in the first direction, and the third blocking member is connected to any adjacent first blocking member.

9. The display panel according to claim 1, wherein the first retaining wall is located on a side of the first substrate facing the second substrate, and a minimum distance from the first retaining wall to the first substrate is greater than a maximum distance from the first signal conductor to the first substrate in a thickness direction of the display panel.

10. The display panel according to claim 9, wherein the first dam is in contact with the second substrate.

11. The display panel according to claim 1, wherein the first retaining wall is located on a side of the second substrate facing the first substrate, and the first retaining wall contacts the first substrate.

12. The display panel according to claim 1, characterized in that the display panel further comprises:

and the second retaining wall is positioned between the first retaining wall and the frame glue area.

13. The display panel according to any one of claims 1 to 12, wherein the second substrate further includes a plurality of second signal conductors, one of the second signal conductors is electrically connected to at least one of the second signal lines, the second signal conductor is located on a side of the first retaining wall away from the frame adhesive region, the conductive adhesive is electrically connected to the first signal conductor and the second signal conductor, respectively, and an edge of an outer end of the second signal conductor in the first direction overlaps an edge of the second substrate.

14. The display panel according to any one of claims 1 to 12, further comprising a flexible printed circuit board electrically connected to the conductive paste.

15. The utility model provides a display panel unit, its characterized in that includes display area, non-display area and treats the cutting area, non-display area includes frame gum area, frame gum area centers on the display area, treat that the cutting area is located at least in first direction non-display area keeps away from one side in frame gum area, treat the cutting area with be equipped with the cutting line between the non-display area, display panel unit still includes:

the display device comprises a first substrate unit and a second substrate unit, wherein the first substrate unit comprises a first substrate unit, a plurality of first signal wires and a plurality of first signal conducting pieces, the first signal wires are positioned on one side, facing the second substrate unit, of the first substrate unit, one first signal conducting piece is electrically connected with at least one first signal wire, the first signal conducting pieces are positioned on one side, away from the display area, of the frame rubber area in the first direction and are arranged along the second direction, and the first direction is intersected with the second direction; the second base plate unit comprises a second substrate base plate unit and a plurality of second signal lines, and the plurality of second signal lines are positioned on one side, facing the first base plate unit, of the second substrate base plate unit;

the conductive adhesive is connected with the first signal conductor and is positioned between the first substrate base plate unit and the second substrate base plate unit;

the first retaining wall is positioned between the first substrate base plate unit and the second substrate base plate unit and comprises a first blocking piece, and the first blocking piece is arranged between any two adjacent first signal conduction pieces;

wherein at least portions of the first signal conductor and the first barrier member are located at the cutting line.

16. The display panel unit according to claim 15, wherein outer end edges of the first signal conductors and the first stoppers in the first direction overlap the cutting lines.

17. The display panel unit according to claim 15, wherein at least one of the first signal conductor and the first stopper is capable of partially extending to the region to be cut.

18. The display panel unit according to claim 17, wherein when a portion of the first signal conductor extends to the region to be cut, an outer end edge of the first signal conductor in the first direction overlaps an edge of the region to be cut.

19. The display panel unit according to claim 15, wherein at least two first blocking members are disposed between any two adjacent first signal conductors, and a predetermined minimum distance is provided between two adjacent first blocking members.

20. The display panel unit according to claim 19, wherein the preset minimum distance is equal to or greater than a width of the first signal conductor in the second direction.

21. The display panel unit according to claim 19, wherein the first dam further comprises a second dam that does not overlap with the first signal conductors in the first direction and is located at least between any adjacent two of the first signal conductors, the second dam being connected to any adjacent first dam.

22. The display panel unit according to claim 21, wherein the second stopper overlaps with an edge of the cutting line away from a side edge of the frame adhesive region in the first direction, or wherein at least a part of the second stopper in the first direction is located in the region to be cut.

23. The display panel unit according to claim 21, wherein the second barrier comprises a first sub-second barrier, and only one side of the first sub-second barrier is provided with the first signal conductor in the second direction.

24. A display device characterized by comprising the display panel according to any one of claims 1 to 14.

25. A method for manufacturing a display panel is characterized by comprising the following steps:

providing a display panel mother board;

cutting a mother board of a display panel for the first time to obtain a plurality of cutting units;

disposing a conductive adhesive between the first substrate unit and the second substrate unit of each of the cutting units to obtain a display panel unit, wherein the display panel unit is the display panel unit according to any one of claims 15 to 23;

and carrying out secondary cutting along the cutting line of the display panel unit, and removing the area to be cut of the display panel unit to obtain the display panel.

26. The method for manufacturing a display panel according to claim 25, wherein the providing a display panel mother board comprises:

providing a first substrate mother board and a second substrate mother board, wherein the first substrate mother board and the second substrate mother board are respectively provided with a plurality of display areas and frame rubber areas surrounding each display area;

arranging frame glue in a frame glue area of one of the first substrate mother board and the second substrate mother board;

and aligning the first substrate mother board and the second substrate mother board, so that the frame glue connects the first substrate mother board and the second substrate mother board to obtain the display panel mother board.

27. The method of manufacturing a display panel according to claim 25, wherein the first substrate unit of the cutting unit includes a plurality of first signal conductors, the second substrate unit of the cutting unit includes a plurality of second signal conductors,

the setting of the conductive paste between the first substrate unit and the second substrate unit of each of the cutting units includes:

and the plurality of first signal conductors and the plurality of second signal conductors are correspondingly and electrically connected through the conductive adhesive.

28. The method for manufacturing a display panel according to claim 25, wherein the first substrate unit of the cutting unit includes a plurality of first signal conductors, and the disposing of the conductive paste between the first substrate unit and the second substrate unit of each cutting unit includes: correspondingly and electrically connecting the conductive adhesive with the plurality of first signal conductors;

after the step of performing the second cutting along the cutting line of the display panel unit, the manufacturing method of the display panel further includes:

and binding and connecting the flexible circuit board with the plurality of first signal conductors and the conductive adhesive.