CN106876606A - Display panel and display device - Google Patents

Abstract

The display panel and the display device provided by the present invention include a first substrate and a second substrate arranged opposite to the box, and a first encapsulation area and a second encapsulation area are correspondingly provided on the opposite surfaces of the two, the first encapsulation area and the second encapsulation area The second encapsulation area is respectively an annular area around the respective edges of the first substrate and the second substrate; and, a glass glue layer and a metal layer are respectively arranged in the first encapsulation area and the second encapsulation area, and on the surface of the metal layer Provided with a plurality of holes extending through its thickness. Moreover, a connecting portion penetrating through the thickness of the metal layer is also provided on the surface of the metal layer, and the connecting portion connects each hole. The display panel provided by the present invention can not only improve the bonding strength between the glass glue layer and the substrate and the utilization rate of laser energy, but also reduce the problem that the glass glue layer is perforated near the hole in the metal layer, thereby improving the glass glue layer. The mechanical strength of the layer, thereby improving the overall packaging performance of the product.

Description

Display panel and display device

technical field

The present invention relates to the field of display technology, in particular to a display panel and a display device.

Background technique

At present, mass-produced OLED devices generally use glass glue as the packaging material, and laser sintering is used for effective packaging. Glass glue is made of glass powder and adhesive. With temperature treatment, the moisture and organic solvent in the slurry are volatilized and decomposed; after laser sintering, microscopic bonding is performed at high temperature to achieve effective packaging.

In order to improve the encapsulation effect, glass glue and a metal layer are respectively arranged on the opposite surfaces of the first substrate and the second substrate arranged in the box, and are located in the encapsulation area of the two. When the glass glue is laser sintered, the metal layer is used The reflection effect and its own characteristics can promote the absorption of laser heat and the balanced conduction of heat.

In practical applications, as shown in FIG. 1 , a plurality of holes 102 through the thickness of the metal layer 101 are provided on the surface of the metal layer 101 , so that the glass glue can pass through the holes 102 to bond with the substrate. However, the effective area for the glass glue to bond with the substrate through each hole 102 is limited, and the bonding strength is insufficient, and the loss of laser energy is relatively large during laser sintering. In addition, during the peel test, the above-mentioned glass glue is prone to perforation near the hole in the metal layer, thereby reducing the mechanical strength of the glass glue, and further affecting the overall packaging performance of the product.

Contents of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art, and proposes a display panel and a display device, which can not only improve the bonding strength between the glass adhesive layer and the substrate and the utilization rate of laser energy, but also The problem of perforation of the glass adhesive layer near the hole in the metal layer can be reduced, thereby improving the mechanical strength of the glass adhesive layer, and further improving the overall packaging performance of the product.

In order to achieve the purpose of the present invention, a display panel is provided, which includes a first substrate and a second substrate arranged opposite to the box, and a first encapsulation area and a second encapsulation area are correspondingly provided on the opposite surfaces of the two, the first An encapsulation area and a second encapsulation area are respectively ring-shaped areas located around respective edges of the first substrate and the second substrate; A layer and a metal layer, the surface of the metal layer is provided with a plurality of holes penetrating its thickness; the surface of the metal layer is also provided with a connecting portion penetrating its thickness, and the connecting portion connects each of the holes.

Preferably, the second packaging area is divided into four sub-areas corresponding to the four straight sides of the second substrate;

In each of the sub-regions, a plurality of the holes are arranged in a rectangular array; the connecting portion includes a plurality of first strip-shaped through-slots and a plurality of second strip-shaped through-slots intersecting each other, wherein each of the The first strip-shaped through grooves communicate with the holes in each row one by one; each of the second strip-shaped through grooves connects the holes in each column in a one-to-one correspondence.

Preferably, the second packaging area is divided into four sub-areas corresponding to the four straight sides of the second substrate;

In each of the sub-areas, a plurality of the holes are allocated into multiple sets of hole groups, and the multiple sets of hole groups are arranged in one or more rows along the straight edge corresponding to the sub-area;

Each set of hole groups includes at least two holes; the connecting portion includes a plurality of through-slot groups, and the number of the through-slot groups is the same as the number of the hole groups, and they are in one-to-one correspondence; each through-slot group includes A plurality of strip-shaped through-slots, each strip-shaped through-slot respectively communicates with two adjacent holes in the hole groups corresponding to the through-slot group one-to-one.

Preferably, in each group of holes, at least two of the holes are distributed at intervals along the direction perpendicular to the straight edge corresponding to the sub-region where the hole group is located; or, at least two of the holes are distributed along a direction parallel to the The sub-regions correspond to the vertical interval distribution in the direction of the straight edge.

Preferably, in each of the sub-regions, a plurality of single holes are arranged inside all the holes, and the plurality of single holes are arranged in one or more rows along the corresponding straight sides of the sub-region; The opening ratio of the single hole is greater than the sum of the opening ratios of the holes in each hole group.

Preferably, the projection shape of the hole on the surface of the metal layer includes a circle, an ellipse, a polygon or an irregular shape.

Preferably, dot-like recesses and/or dot-like protrusions are scattered on the surface of the metal layer opposite to the glass glue layer.

Preferably, the sum of the opening areas of all the holes and the connecting parts does not exceed 70% of the total surface area of the metal layer.

Preferably, the sum of the opening areas of all the holes and the connecting parts accounts for 40% of the total surface area of the metal layer.

As another technical solution, the present invention also provides a display device, including a display panel, and the display panel adopts the above-mentioned display panel provided by the present invention.

The present invention has the following beneficial effects:

In the display panel provided by the present invention, the surface of the metal layer is provided with a connecting portion that runs through its thickness, and the connecting portion connects each hole, which can not only increase the effective area of the glass glue and the substrate, thereby improving the bonding between the glass glue and the substrate. The bonding strength between them and the utilization rate of laser energy can also effectively disperse the stress on the glass glue, reduce the problem of perforation of the glass glue near the hole in the metal layer due to stress concentration, thereby improving the mechanical strength of the glass glue, and then improving The overall packaging performance of the product.

The display device provided by the present invention can improve the overall packaging performance of the product by using the above-mentioned display panel provided by the present invention.

Description of drawings

Fig. 1 is the structural diagram of the hole of a kind of existing metal layer;

2A is a schematic structural diagram of a second package area of a second substrate;

FIG. 2B is a structural diagram of the metal layer of the display panel provided in the first embodiment of the present invention in the area A in FIG. 2A;

3 is a structural diagram of the surface of the metal layer in the first embodiment of the present invention;

4A is a partial structural diagram of a metal layer of a display panel provided by a second embodiment of the present invention;

Figure 4B is an enlarged view of area B in Figure 4A; and

FIG. 5 is a partial structural view of the metal layer of the display panel provided by the third embodiment of the present invention.

detailed description

In order for those skilled in the art to better understand the technical solution of the present invention, the display panel and the display device provided by the present invention will be described in detail below with reference to the accompanying drawings.

The display panel provided by the present invention includes a first substrate and a second substrate arranged opposite to the box, and a first encapsulation area and a second encapsulation area are correspondingly provided on the opposite surfaces of the two, and the first encapsulation area and the second encapsulation area The areas are respectively ring-shaped areas located around the respective edges of the first substrate and the second substrate. As shown in FIG. around the edges of the surface. Similarly, the first encapsulation area surrounds the edge of the surface of the first substrate opposite to the second substrate and corresponds to the second encapsulation area 202 . Moreover, a glass glue layer and a metal layer are respectively arranged in the first encapsulation area and the second encapsulation area, and a plurality of holes through its thickness are arranged on the surface of the metal layer, and the glass glue can pass through each hole and the second The substrates are bonded together, so as to realize the encapsulation of the first substrate and the second substrate. The function of the metal layer is to promote the absorption of laser heat and the balanced conduction of heat by using the reflection effect and its own characteristics of the metal layer when laser sintering the glass glue.

Moreover, the surface of the above-mentioned metal layer is also provided with a connecting portion that runs through its thickness, and the connecting portion connects each hole, which can not only increase the effective area of the glass glue and the second substrate, thereby improving the bonding between the glass glue and the second substrate. The bonding strength between them and the utilization rate of laser energy can also effectively disperse the stress on the glass glue, reduce the problem of perforation of the glass glue near the hole in the metal layer due to stress concentration, thereby improving the mechanical strength of the glass glue, and then improving The overall packaging performance of the product.

The structure of the above metal layer will be described in detail below. Specifically, FIG. 2B is a structural diagram of the metal layer of the display panel provided by the first embodiment of the present invention in the region A in FIG. 2A . Please refer to FIG. 2B. For the convenience of description, the four straight sides of the second packaging area 202 corresponding to the second substrate 201 are divided into four sub-areas, namely the upper sub-area 202a, the right sub-area 202b, the left sub-area 202c and the lower sub-area. In the area 202d, the four sub-areas correspond to the four straight sides of the upper side, the right side, the left side and the lower side of the second substrate 201 respectively, and the four sub-areas are spliced to form a ring-shaped area around the edge of the second substrate 201 .

In this embodiment, in each sub-region, taking the region A in the left sub-region 202c as an example, a plurality of holes 204 on the metal layer 203 are arranged in a rectangular array. The connecting portion includes a plurality of first strip-shaped through grooves 206 and a plurality of second strip-shaped through grooves 205 intersecting each other, wherein each first strip-shaped through-groove 206 connects the holes 204 of each row in a one-to-one correspondence; The strip-shaped through grooves 205 communicate with the holes 204 in each row in a one-to-one correspondence. In other words, a plurality of first strip-shaped through-slots 206 and a plurality of second strip-shaped through-slots 205 that intersect with each other connect each hole 204 to form a grid-like through-slot as a whole, so that each hole 204 is connected with it. Compared with the single hole in the prior art, it can not only increase the opening ratio of the hole on the metal layer, thereby increasing the effective area of the glass glue and the second substrate, and then can improve the glass glue and the second substrate. The bonding strength between the two substrates and the utilization rate of laser energy can also effectively disperse the stress on the glass glue to avoid stress concentration, thereby reducing the problem of glass glue being perforated near the hole 204 in the metal layer, thereby improving the glass glue. Mechanical strength, thereby improving the overall packaging performance of the product. It is easy to understand that in other sub-regions except the left sub-region 202c, the structures of holes and connected parts are the same as those of the holes and connected parts in the left sub-region 202c, but are only arranged according to the direction of the corresponding straight sides. The direction is different.

Preferably, in order to ensure the overall heat transfer performance and make the glass glue heated evenly, the sum of the opening areas of all the holes 204 and the above-mentioned connecting parts does not exceed 70% of the total surface area of the metal layer 203 . Further preferably, the sum of the opening areas of all the holes 204 and the above-mentioned connecting parts accounts for 40% of the total surface area of the metal layer 203 .

In addition, preferably, FIG. 3 is a structural view of the surface of the metal layer in the first embodiment of the present invention. Referring to FIG. 3 , dot-like recesses 207 and/or dot-like protrusions 208 are scattered on the surface of the metal layer 203 opposite to the glass glue layer. The dot-shaped concave portion 207 and/or the dot-shaped convex portion 208 can form diffuse reflection of the laser light, thereby facilitating the absorption of laser energy, and further improving the utilization rate of laser energy. Preferably, the dot-like recesses 207 and/or dot-like protrusions 208 are randomly distributed, so as to facilitate processing, and the process requirements are not high. In addition, the size and quantity of the dot-like recesses 207 and/or dot-like protrusions 208 can be arbitrary according to specific conditions. set up.

FIG. 4A is a partial structural view of the metal layer of the display panel provided by the second embodiment of the present invention. FIG. 4B is an enlarged view of area B in FIG. 4A. Please refer to FIG. 4A and FIG. 4B together. Compared with the above-mentioned first embodiment, the display panel provided by this embodiment differs only in that the structures and arrangements of the holes and connecting parts are different. Parts of the display panel provided in this embodiment that are the same as those in the above-mentioned first embodiment will not be repeated here.

Only the differences between this embodiment and the above-mentioned first embodiment will be described in detail below. Specifically, in each sub-region on the surface of the metal layer 203, also taking the A region in the left sub-region 202c as an example, a plurality of holes are allocated into multiple groups of holes, and multiple groups of hole groups correspond to The straight sides are arranged in one or more columns. As shown in Figure 4A, multiple holes are allocated into multiple groups of hole groups, and the multiple groups of hole groups are arranged in two rows along the straight edge corresponding to the sub-region, which are respectively the first row of hole groups 301a and the second row of hole groups 301b , the two columns of hole groups are sequentially arranged from the inner side to the outer side of the second encapsulation area.

Each hole group includes at least two holes. The connecting part includes a plurality of through-slot groups, and the number of the through-slot groups is the same as the number of the hole groups, and they correspond one to one; Each adjacent two holes in the group-to-one corresponding hole group are connected. In this embodiment, as shown in FIG. 4B , each hole group includes three holes, and from the outside to the inside of the second packaging area are the first hole 302a, the second hole 302b and the third hole 302c, that is, three The holes are distributed at intervals along the direction perpendicular to the straight edge corresponding to the sub-area where the hole group is located. In the through-slot group corresponding to the hole group one-to-one, there are two strip-shaped through-slots, respectively the first strip-shaped through-slot 303a and the second strip-shaped through-slot 303b, wherein the first strip-shaped through-slot 303a will The first hole 302a communicates with the second hole 302b; the second strip-shaped through groove 303b communicates the second hole 302b with the third hole 302c.

It can be seen from the above that each hole in each group of holes is connected by the corresponding strip-shaped through groove in the corresponding through groove group, and the holes between different hole groups are independent of each other, which can effectively disperse the stress on the glass glue. Based on this, the flexibility of the design is increased.

It should be noted that in this embodiment, the three holes are distributed at intervals along the direction perpendicular to the straight edge corresponding to the sub-region where the hole group is located, but the present invention is not limited thereto. In practical applications, the three holes can also be Distributed at intervals along the direction parallel to the straight edge corresponding to the sub-region where the hole group is located, that is, in FIG. 4B , the first hole 302a, the second hole 302b and the third hole 302c may also be distributed at intervals from top to bottom.

It should also be noted that in this embodiment, the shape of each hole is a rectangle, but the present invention is not limited thereto. In practical applications, the projected shape of the hole on the surface of the metal layer may also include a circle, Oval, polygonal or irregular shapes.

FIG. 5 is a partial structural view of the metal layer of the display panel provided by the third embodiment of the present invention. Referring to FIG. 5 , the display panel provided in this embodiment is a further improvement on the basis of the above-mentioned second embodiment. Specifically, in each subregion, also taking the A region in the left subregion 202c as an example, it is located inside all the holes, that is, a plurality of single holes 401 are arranged inside the innermost row of hole groups, and the plurality of single holes 401 One or more columns are arranged along the corresponding straight sides of the sub-regions, and only one column is shown in FIG. 5 . The opening ratio of the single hole 401 is greater than the sum of the opening ratios of the holes in each group of hole groups. For example, in FIG. sum of rates. With the help of the single hole 401, the effective area of bonding the glass glue to the substrate can be further increased, thereby improving the bonding strength between the glass glue and the substrate.

Other structures of the display panel provided by this embodiment are the same as those of the second embodiment above, and will not be repeated here.

As another technical solution, an embodiment of the present invention further provides a display device, which includes a display panel, and the display panel adopts the above-mentioned various embodiments of the present invention to provide a display panel.

The display device provided by the embodiment of the present invention can improve the overall packaging performance of the product by using the above-mentioned display panel provided by each of the above-mentioned embodiments of the present invention.

It can be understood that, the above embodiments are only exemplary embodiments adopted for illustrating the principle of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims (10)

1. a kind of display panel, including the first substrate and second substrate set to box, it is characterised in that relative at the two respectively Surface on be correspondingly arranged on the first packaging area and the second packaging area, first packaging area and the second packaging area point It is not the annular region positioned at the first substrate and the respective edge surrounding of second substrate；Also, in first encapsulation region Glass glue-line and metal level are respectively arranged with domain and second packaging area, the surface of the metal level is provided with multiple Through the hole of its thickness；The interconnecting part through its thickness is additionally provided with the surface of the metal level, the interconnecting part will be each Individual described hole connection.

2. display panel according to claim 1, it is characterised in that the second packaging area correspondence second substrate Four straight flanges be divided into four sub-regions；

In each described subregion, multiple described hole rectangular array arrangements；The interconnecting part includes cross one another many Individual first bar shaped groove and multiple second bar shaped grooves, wherein, each described first bar shaped groove is correspondingly by each row Described hole is connected；Each described second bar shaped groove correspondingly connects the described hole of each row.

3. display panel according to claim 1, it is characterised in that the second packaging area correspondence second substrate Four straight flanges be divided into four sub-regions；

In each described subregion, multiple described holes are allocated to multigroup hole group, and multigroup hole group is along the sub-district Straight flange corresponding to domain forms a line or multiple row；

Every group of hole group includes at least two described holes；The interconnecting part includes multiple groove groups, the quantity of the groove group Quantity with described hole group is identical, and corresponds；Each groove group includes multiple bar shaped grooves, each bar shaped groove difference To be connected with two described holes that each is adjacent in the one-to-one described hole group of the groove group.

4. display panel according to claim 3, it is characterised in that in every group of described hole group, described at least two Hole is spaced apart along perpendicular to the corresponding straight flange direction of subregion where the hole group；Or, at least two described hole edges It is spaced apart parallel to the corresponding straight flange direction of subregion where the hole group.

5. display panel according to claim 3, it is characterised in that in each described subregion, and positioned at all institutes State and be provided with the inside of hole multiple single holes, the multiple single hole forms a line or multiple row along the corresponding straight flange of the subregion；Institute State the aperture opening ratio sum of the aperture opening ratio more than hole described in every group of hole group of single hole.

6. the display panel according to claim 1-4 any one, it is characterised in that described hole is in the metal level Projection of shape on surface includes circular, oval, polygon or irregular shape.

7. the display panel according to claim 1-4 any one, it is characterised in that in the metal level and the glass Scattering device has point-like recess and/or point-like convex portion on the relative surface of glue-line.

8. the display panel according to claim 1-4 any one, it is characterised in that all described holes are connected with described 70% of the aperture area sum in portion no more than the total surface area of the metal level.

9. display panel according to claim 8, it is characterised in that the opening surface of all described holes and the interconnecting part Product sum accounts for the 40% of the total surface area of the metal level.

10. a kind of display device, including display panel, it is characterised in that the display panel is any one using claim 1-9 Display panel described in.