CN112420957A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN112420957A CN112420957A CN202011299177.8A CN202011299177A CN112420957A CN 112420957 A CN112420957 A CN 112420957A CN 202011299177 A CN202011299177 A CN 202011299177A CN 112420957 A CN112420957 A CN 112420957A
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- reflective metal
- metal part
- display panel
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/58—Structural electrical arrangements for semiconductor devices not otherwise provided for, e.g. in combination with batteries
- H01L23/60—Protection against electrostatic charges or discharges, e.g. Faraday shields
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
Abstract
The invention discloses a display panel and a display device, which relate to the technical field of display, wherein the display panel comprises: the first substrate and the second substrate are oppositely arranged; the packaging adhesive is positioned between the first substrate and the second substrate, is positioned in the non-display area and is arranged around the display area; the first reflective metal part and the second reflective metal part are arranged on the first substrate in different layers, are positioned in the non-display area and are overlapped with the orthographic projection of the packaging adhesive to the light-emitting surface of the display panel; the second reflective metal part at least covers one side edge of the first reflective metal part close to the display area; the first reflective metal part receives a first fixed level signal, and the second reflective metal part receives a second fixed level signal. Therefore, the packaging reliability of the product is improved, and meanwhile, the antistatic capacity of the product is improved.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
From the CRT (Cathode Ray Tube) era to the liquid crystal era and now to the OLED (Organic Light-Emitting Diode) era, the display industry has been developing over decades. The display industry is closely related to our life, and display technologies cannot be separated from traditional mobile phones, flat panels, televisions and PCs to current intelligent wearable devices and VR and other electronic devices.
An important component of an electronic device for implementing a display function is a display panel, and generally, the display panel has a display area and a frame area, where the display area is used to set pixel units, and the frame area is used to set scan lines, signal lines, pad metals, package adhesives, and the like of the pixel units. In the manufacturing process of the display panel, the display panel is very easily affected by static electricity, and the phenomenon of electrostatic damage is easily caused in the display panel, which may cause package failure. Therefore, how to improve the anti-static capability of the display panel while ensuring the reliability of the package is one of the technical problems to be solved urgently at the present stage.
Disclosure of Invention
In view of this, the present invention provides a display panel and a display device, which are beneficial to improving the packaging reliability of a product and simultaneously also beneficial to improving the antistatic capability of the product.
In a first aspect, the present application provides a display panel provided with a display area and a non-display area surrounding the display area, the display panel including:
the first substrate and the second substrate are oppositely arranged;
the packaging adhesive is positioned between the first substrate and the second substrate, is positioned in the non-display area and surrounds the display area;
the first reflective metal part and the second reflective metal part are arranged on the first substrate and are arranged in different layers, the first reflective metal part and the second reflective metal part are both positioned in the non-display area, and the first reflective metal part and the second reflective metal part are overlapped with the orthographic projection of the packaging adhesive to the light-emitting surface of the display panel; the second reflective metal part at least covers one side edge of the first reflective metal part close to the display area;
the first reflective metal part receives a first fixed level signal, and the second reflective metal part receives a second fixed level signal.
In a second aspect, the present application provides a display device including the display panel provided by the present application.
Compared with the prior art, the display panel and the display device provided by the invention at least realize the following beneficial effects:
in the display panel and the display device provided by the application, two reflective metal parts, namely the first reflective metal part and the second reflective metal part, which are arranged in different layers are introduced on the first substrate, the first reflective metal part and the second reflective metal part are overlapped with the orthographic projection of the light emitting surface of the packaging adhesive to the display panel, and the second reflective metal part at least covers one side edge of the first reflective metal part close to the display area. In the laser curing process, the first metal part and the second metal part can reflect laser energy to the packaging adhesive to provide curing capability for the packaging adhesive, so that the curing effect of the packaging adhesive is favorably improved. Particularly, the first reflective metal part and the second reflective metal part in the invention both receive a fixed level signal, wherein the first reflective metal part receives a first fixed level signal, the second reflective metal part receives a second fixed level signal, and the first reflective metal part and the second reflective metal part respectively form an electrostatic discharge path.
Of course, it is not necessary for any product in which the present invention is practiced to achieve all of the above-described technical effects simultaneously.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a top view of a display panel according to an embodiment of the invention;
FIG. 2 is a BB cross-sectional view of the display panel of FIG. 1;
FIG. 3 is a diagram showing a relative position relationship among the package adhesive, the first reflective metal portion and the second reflective metal portion;
FIG. 4 is a top view of region Q of FIG. 1;
FIG. 5 is a cross-sectional view of a CC of FIG. 4;
FIG. 6 is a cross-sectional view of another CC shown in FIG. 4;
FIG. 7 is another top view of region Q of FIG. 1;
FIG. 8 shows a cross-sectional view DD of FIG. 7;
FIG. 9 is another top view of region Q of FIG. 1;
FIG. 10 is a cross-sectional view of one of the EE of FIG. 9;
fig. 11 is a top view of a display panel according to an embodiment of the invention;
FIG. 12 is a schematic diagram of a sub-pixel structure in a display panel;
FIG. 13 is another top view of region Q of FIG. 1;
fig. 14 is a schematic view of a display device according to an embodiment of the present disclosure.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 1 is a top view of a display panel according to an embodiment of the present invention, fig. 2 is a BB cross-sectional view of the display panel in fig. 1, fig. 3 is a relative position diagram of an encapsulant, a first reflective metal portion and a second reflective metal portion, please refer to fig. 1 to 3, the present invention provides a display panel 100 having a display area AA and a non-display area NA surrounding the display area AA, the display panel 100 includes:
a first substrate 11 and a second substrate 12 disposed opposite to each other;
the packaging adhesive 30 is positioned between the first substrate 11 and the second substrate 12, and the packaging adhesive 30 is positioned in the non-display area NA and surrounds the display area AA;
a first reflective metal portion 21 and a second reflective metal portion 22 disposed on the first substrate 11 and disposed in different layers, wherein the first reflective metal portion 21 and the second reflective metal portion 22 are both located in the non-display area NA, and the first reflective metal portion 21 and the second reflective metal portion 22 are both overlapped with the front projection of the package adhesive 30 to the light emitting surface M of the display panel 100; the second reflective metal part 22 covers at least one side edge of the first reflective metal part 21 close to the display area AA;
wherein the first reflective metal part 21 receives a first fixed level signal, and the second reflective metal part 22 receives a second fixed level signal.
It should be noted that fig. 1 only illustrates the display panel 100 as a rectangular display panel, and in some other embodiments of the present application, the display panel 100 may also be embodied in other shapes, such as a circle, an ellipse, or a special-shaped structure. Fig. 2 also illustrates only the relative positional relationship between the first substrate 11, the second substrate 12, the sealing adhesive 30, the first reflective metal part 21, and the second reflective metal part 22, and does not represent the actual number and size of the film layers of the display panel 100. In the display panel 100 of the present invention, for example, an organic electroluminescent display panel, a driving circuit and a light emitting structure are disposed on a first substrate 11, a second substrate 12 may be, for example, a glass cover plate, and the specific film layer structures of the first substrate 11 and the second substrate 12 may refer to the contents of the prior art, which is not specifically limited in the present invention. Fig. 3 shows only one relative positional relationship of the encapsulation paste 30, the first reflective metal part 21 and the second reflective metal part 22, and does not represent actual sizes of the respective film layers.
Specifically, referring to fig. 1 to fig. 3, the display panel 100 of the present invention includes a first substrate 11 and a second substrate 12 disposed opposite to each other, and an encapsulant 30 disposed between the first substrate 11 and the second substrate 12, wherein the encapsulant 30 is disposed in the non-display area NA and surrounds the display area AA. Optionally, the component of the packaging adhesive 30 includes glass frit (frit), and during packaging, the glass frit is melted by laser heating, and after the melted glass frit is re-solidified, the first substrate 11 and the second substrate 12 are bonded and fixed.
In the related prior art, burrs are easily generated in the manufacturing process of the packaging adhesive 30, and in the laser curing process, no metal reflection energy exists in the region corresponding to the burrs, so that the curing incomplete phenomenon occurs in the region corresponding to the burrs, and the curing effect of the packaging adhesive 30 is poor.
Obviously, compared with the prior art, the two reflective metal portions arranged in different layers are introduced on the first substrate 11 in the present invention, that is, the first reflective metal portion 21 and the second reflective metal portion 22, both the first reflective metal portion 21 and the second reflective metal portion 22 overlap with the orthogonal projection of the encapsulation adhesive 30 to the light-emitting surface of the display panel 100, and the second reflective metal portion 22 at least covers one side edge of the first reflective metal portion 21 near the display area AA. In the laser curing process, the first metal part and the second metal part can reflect the laser energy to the packaging adhesive 30, so that the packaging adhesive 30 is provided with curing capability, the area of the metal for reflecting the laser energy is increased, and the curing effect of the packaging adhesive 30 is improved.
In particular, the first and second reflective metal parts 21 and 22 in the present invention each receive a fixed level signal, wherein the first reflective metal part 21 receives a first fixed level signal, the second reflective metal part 22 receives a second fixed level signal, the first reflective metal part 21 and the second reflective metal part 22 form an electrostatic discharge path, when the display panel 100 is subjected to static electricity, the static electricity can be discharged through the first reflective metal portion 21 and the second reflective metal portion 22, which is equivalent to two static electricity discharge paths formed on the display panel 100, thereby being beneficial to reducing the possibility of the display panel 100 from being damaged by static electricity, and at the same time, it is advantageous to reduce the possibility of package failure due to electrostatic damage, and therefore, the present invention introduces a way for the first reflective metal part 21 and the second reflective metal part 22 to reflect laser energy and form an electrostatic discharge path, the package reliability is ensured, and the antistatic capability of the display panel 100 is improved.
In an alternative embodiment of the invention, fig. 4 is a top view of a region Q in fig. 1, fig. 5 is a cross-sectional view CC in fig. 4, please refer to fig. 2, fig. 4 and fig. 5, along a direction perpendicular to the light exit surface, the second reflective metal part 22 is located between the encapsulation adhesive 30 and the first reflective metal part 21; the display panel 100 further includes a first insulating layer 51, the first insulating layer 51 is located between the packaging adhesive 30 and the second reflective metal portion 22, and the packaging adhesive 30 is in direct contact with the first insulating layer 51; in the non-display area NA, the first reflective metal part 21 includes a plurality of first apertures K1, and the first apertures K1 extend in a direction F perpendicular to the first reflective metal part 21.
Specifically, in the display panel 100 of the present invention, in the non-display area NA, a plurality of first openings K1 are formed in the first reflective metal part 21, and the first openings K1 extend toward the light emitting surface in a direction perpendicular to the first reflective metal part 21. Optionally, the first opening K1 in this embodiment does not penetrate through the first reflective metal part 21. When the plurality of first openings K1 are formed in the first reflective metal portion 21, some other film structures on the first substrate 11 at the side of the first reflective metal portion 21 close to the package adhesive 30 may sag to some extent at the position corresponding to the first opening K1, for example, referring to fig. 5, the first insulating layer 51 may sag to some extent at the position of the first opening K1, that is, a plurality of recesses 80 may be formed at the side of the first insulating layer 51 close to the package adhesive 30. Since the packaging adhesive 30 is located on the side of the first insulating layer 51 away from the light emitting surface, and a portion of the packaging adhesive 30 will enter the recessed area of the first insulating layer 51, compared with the structure that the surface of the second reflective metal portion 22 away from the light emitting surface is a flat surface, the manner of forming the plurality of recesses 80 on the first insulating layer 51 increases the contact area between the packaging adhesive 30 and the first insulating layer 51, thereby facilitating the improvement of the fixing reliability of the packaging adhesive 30 and the first insulating layer 51, and further facilitating the further improvement of the packaging reliability of the display panel 100.
In an alternative embodiment of the present invention, fig. 6 is a cross-sectional view CC of fig. 4, and the first opening K1 penetrates through the first reflective metal portion 21 along a direction perpendicular to the light exit surface.
Specifically, referring to fig. 6, in the display panel 100 of the present invention, when the plurality of first openings K1 are formed on the first reflective metal portion 21, the first openings K1 can penetrate through the first reflective metal portion 21 along a direction perpendicular to the light emitting surface, so as to increase the depth of the first openings K1 along the direction perpendicular to the light emitting surface of the display panel 100. When the first insulating layer 51 is formed on the side of the first reflective metal portion 21 away from the substrate, the depth of the recess 80 formed in the area corresponding to the first opening K1 of the first insulating layer 51 is increased, so as to further increase the contact area between the package adhesive 30 and the first insulating layer 51, thereby further improving the package effect of the display panel 100.
In an alternative embodiment of the present invention, fig. 7 is another plan view of the region Q in fig. 1, and fig. 8 is a cross-sectional view DD in fig. 7. in the non-display area NA, the second reflective metal part 22 includes a plurality of second openings K2, and the second openings K2 penetrate through the second reflective metal part 22 along a direction perpendicular to the light emitting surface.
Specifically, referring to fig. 7 and 8, when the plurality of second openings K2 are formed in the second reflective metal portion 22, a portion of the film layer on the first substrate 11 on the light exit surface side of the second reflective metal portion 22 may sink to a certain extent at the second opening K2, and a portion of the first insulating layer 51 corresponding to the second opening K2 may sink to a certain extent, that is, a plurality of recesses 80 are formed on the first insulating layer 51 on the side close to the encapsulant 30. When the orthographic projections of the first opening K1 and the second opening K2 on the light emitting surface do not overlap, a recess corresponding to the first opening K1 and a recess corresponding to the second opening K2 are formed on the surface of the first insulating layer 51 facing the package adhesive 30, which is equivalent to increasing the number of recesses on the first insulating layer 51. When the packaging adhesive 30 directly contacts the first insulating layer 51, the contact area between the packaging adhesive 30 and the first insulating layer 51 is further increased by the more number of recesses, so that the contact reliability between the packaging adhesive 30 and the first insulating layer 51 is further improved, and the packaging effect of the packaging adhesive 30 is further improved. Optionally, the second opening K2 on the second reflective metal portion 22 penetrates through the second reflective metal portion 22 along a direction perpendicular to the light emitting surface, which is beneficial to increasing the depth of the second opening K2, so as to be beneficial to increasing the depth of the recess on the first insulating layer 51 corresponding to the second opening K2, thereby being beneficial to further increasing the contact area between the first insulating layer 51 and the package adhesive 30, and improving the package reliability.
In an alternative embodiment of the invention, fig. 9 is another top view of the area Q in fig. 1, fig. 10 is a cross-sectional view of EE in fig. 9, and the second holes K2 are disposed in a one-to-one correspondence with at least a portion of the first holes K1, and the first holes K1 are communicated with the second holes K2 along a direction perpendicular to the light emitting surface.
Specifically, the embodiments shown in fig. 9 and 10 illustrate a case where the first hole K1 and the second hole K2 overlap in a direction perpendicular to the light emitting surface of the display panel 100, specifically, the second hole K2 is disposed in one-to-one correspondence with at least a portion of the first hole K1, and the first hole K1 is communicated with the second hole K2. In general, the first reflective metal part 21 and the second reflective metal part 22 are isolated by an insulating layer, and assuming that the insulating layer disposed between the first reflective metal part 21 and the second reflective metal part 22 is the second insulating layer 52, when the first opening K1 is formed on the first reflective metal part 21, at least a portion of the second insulating layer 52 will be located in the first opening K1, when the second reflective metal part 22 is further formed on the second insulating layer 52 on the side away from the first reflective metal part 21, and the second opening K2 is formed on the second reflective metal part 22, in order to communicate the first opening K1 with the second opening K2, it is necessary to remove the portion of the second reflective metal part 22 located in the first opening K1, so that, when the first insulating layer 51 is formed on the side of the second reflective metal part 22 away from the first reflective metal part 21, at least a portion of the first insulating layer 51 will extend from the second opening K2 into the first opening K1, thereby increasing the depth of the first insulating layer 51 in a direction perpendicular to the light exit surface. When the package adhesive 30 is formed on the side of the first insulating layer 51 away from the second reflective metal portion 22, in the region corresponding to the first opening K1 and the second opening K2, in the direction perpendicular to the light emitting surface, the package adhesive 30 extends along the extending direction of the first insulating layer 51, so that the contact area between the first insulating layer 51 and the package layer in the region corresponding to the first opening K1 and the second opening K2 is further increased, which is more favorable for improving the contact reliability between the package adhesive 30 and the first insulating layer 51, and is further favorable for improving the package effect.
In an alternative embodiment of the present invention, please continue to refer to fig. 9, the display panel 100 further includes a first edge L1 disposed around the non-display area NA; in the first opening K1 and the second opening K2, which are disposed in a one-to-one correspondence manner, a minimum distance between an edge of an orthographic projection of the first opening K1 to the light emitting surface and the first edge L1 is H1, a minimum distance between an edge of an orthographic projection of the second opening K2 to the light emitting surface and the first edge L1 is H2, and H1 > H2.
Specifically, in the first opening K1 and the second opening K2 which are arranged in one-to-one correspondence, when the minimum distance between the edge of the first opening K1 and the first edge L1 is set to be larger, and the minimum distance between the edge of the second opening K2 and the first edge L1 is set to be smaller, which is equivalent to that the second opening K2 is closer to the first edge L1, the area of the orthographic projection of the second opening K2 to the light-emitting surface is larger than the area of the orthographic projection of the first opening K1 to the light-emitting surface. As shown in fig. 10, when the second opening K2 is formed on the second reflective metal portion 22, in addition to removing the portion of the second reflective metal portion 22 located in the first opening K1, a portion of the second reflective metal portion 22 is further removed, for example, referring to the structure shown in fig. 10, at the position corresponding to the second opening K2, the second insulating layer 52 and the second reflective metal portion 22 form a step structure, which is favorable for increasing the lateral contact area between the first insulating layer 51 and the package adhesive 30, and is further favorable for improving the package reliability of the package adhesive 30.
In an alternative embodiment of the invention, referring to fig. 9, a minimum distance H2 between an edge of the orthographic projection of the second hole K2 to the light emitting surface and the first edge L1 satisfies: h2 is more than or equal to 10 mu m.
Specifically, referring to fig. 9 and 10, in the first opening K1 and the second opening K2 corresponding to each other, the area of the orthographic projection of the second opening K2 to the light-emitting surface is larger than the area of the orthographic projection of the first opening K1 to the light-emitting surface, and the distance between the edge of the second opening K2 facing the first edge L1 and the first edge L1 is closer than the distance between the edge of the second opening K2 facing the first edge L1 than the edge of the first opening K1 facing the first edge L1, since the first edge L1 of the display panel 100 is formed by cutting, when the minimum distance between the edge of the orthographic projection of the second opening K2 to the light-emitting surface and the first edge L1 is smaller than 10 μm, the side wall of the second reflective metal portion 22 is too thin. When there is static electricity, the static electrode may damage the second reflective metal portion 22, which affects the laser energy reflected from the second reflective metal portion 22 to the package adhesive 30 during the laser curing process, resulting in package failure. Therefore, in the invention, the minimum distance H2 between the edge of the orthographic projection of the second opening K2 to the light emitting surface and the first edge L1 is set to be greater than or equal to 10 μm, so that the side wall of the second reflective metal part 22 is not too thin, and the phenomenon of electrostatic shock damage of the second reflective metal part 22 is effectively avoided, thereby being beneficial to improving the reliability of the second reflective metal part 22 in reflecting laser energy to the packaging adhesive 30, and further being beneficial to improving the packaging reliability of the display panel 100. Alternatively, H2 may be selected to be 11 μm, 12 μm, 13 μm, and so forth.
In an optional embodiment of the invention, please refer to fig. 1 to 3, the non-display area NA includes a sealing area S0 and a first transition area S1, and an orthogonal projection of the package adhesive 30 on the light emitting surface coincides with the sealing area S0; the first transition area S1 is located between the sealant area S0 and the display area AA; the second reflective metal part 22 extends from the molding region S0 to the first transition region S1.
Specifically, the sealing adhesive region S0 is disposed in the non-display region NA and the area where the packaging adhesive 30 is located. Referring to fig. 1-3, a first transition region S1 is introduced between the molding compound region S0 and the display region AA, and the second reflective metal portion 22 extends from the molding compound region S0 to the first transition region S1. Thus, when a burr extending from the sealing region S0 to the display region AA is formed during the process of manufacturing the package adhesive 30, the portion of the second reflective metal part 22 extending into the first transition region S1 can reflect laser energy like the burr, so that the burr extending out of the package adhesive 30 can be reliably cured, thereby avoiding a phenomenon of a large curing difference between the package adhesive 30 and the burr, and facilitating the improvement of the curing uniformity of the package adhesive 30 as a whole.
In an alternative embodiment of the present invention, fig. 11 is another top view of the display panel 100 according to the embodiment of the present invention, fig. 12 is a schematic structural diagram of a sub-pixel P in the display panel 100, please refer to fig. 3, fig. 11 and fig. 12, the display panel 100 further includes a first fixed level signal line PVEE at least partially surrounding the display area AA, the display area AA includes a plurality of sub-pixels P, the sub-pixels P include an anode 61, a light emitting layer 62 and a cathode 63, the light emitting layer 62 is located between the anode 61 and the cathode 63 along a direction perpendicular to the light emitting surface, and the cathode 63 is electrically connected to the first fixed level signal line PVEE; the second reflective metal part 22 is multiplexed as the first fixed-level signal line PVEE. In fig. 12, only the anode 61, the light-emitting layer 62, and the cathode 63 of the pixel P are denoted by reference numerals, and other film layer structures are not denoted by reference numerals.
Specifically, with continued reference to fig. 3, 11 and 12, the present invention provides a first fixed-level signal line PVEE in the non-display area NA for providing a fixed-level signal to the cathode 63 of the sub-pixel P in the display area AA. In particular, the second reflective metal part 22 receiving the fixed level signal is reused as the first fixed level signal line PVEE for providing the fixed level signal to the cathode 63 of the sub-pixel P, and the second reflective metal part 22 can be used as an electrostatic transmission path and can also provide the fixed level signal to the cathode 63 of the sub-pixel P in the display area AA, so that the second reflective metal part 22 and the first fixed level signal line PVEE do not need to be manufactured in the display panel 100, the manufacturing process of the display panel 100 is greatly simplified, and the improvement of the manufacturing efficiency of the display panel 100 is facilitated.
In the related art, when the first fixed level signal line PVEE is disposed around the display area in the display panel, the first fixed level signal line PVEE usually overlaps with the fan-out trace in the display panel, and the fan-out trace usually is electrically connected to the data line in the display panel. In the process of detecting the display panel, the fluctuation of the first fixed level signal line PVEE will affect the voltage of the data line, so that the signal on the data line fluctuates, resulting in the problem of screen shaking of the display panel. In the invention, two electrostatic discharge paths are introduced into the display panel, when static electricity acts on the display panel, the static electricity can be discharged through the two paths, and because the first reflective metal part positioned on one side of the first fixed level signal line PVEE far away from the second substrate receives a fixed level signal (for example, the first reflective metal part can be grounded), the first reflective metal part can effectively maintain the signal stability on the first fixed level signal line PVEE, thereby being beneficial to avoiding the phenomenon of screen shaking of the display panel.
In an alternative embodiment of the present invention, please continue to refer to fig. 1 to 3 and fig. 9, the display panel 100 further includes a first edge L1 disposed around the non-display area NA; the non-display area NA comprises a sealing area S0 and a second transition area S2, and an orthogonal projection of the package adhesive 30 on the light emitting surface coincides with the sealing area S0; the second transition region S2 is located between the first edge L1 and the sealant region S0; the first reflective metal part 21 extends from the molding region S0 to the second transition region S2.
Specifically, referring to fig. 1-3 and 9, a second transition region S2 is introduced between the sealant region S0 and the first edge L1 of the display panel 100, and the first reflective metal portion 21 extends from the sealant region S0 to the second transition region S2. Thus, when the burr extending from the sealing region S0 to the first edge L1 is formed in the process of manufacturing the package adhesive 30, the portion of the first reflective metal portion 21 extending into the first transition region S1 can reflect laser energy like the burr, so that the burr extending out of the package adhesive 30 can be reliably cured, the phenomenon of large curing difference between the package adhesive 30 and the burr is avoided, and the curing uniformity of the whole package adhesive 30 is improved. In addition, in the invention, the first reflective metal portion 21 is extended to the second transition region S2 adjacent to the first edge L1, when external static electricity acts on the side edge of the display panel 100, because the first reflective metal layer is closer to the first edge L1, the static electricity will first act on the first reflective metal layer, the first reflective metal portion 21 releases the static electricity, and the static electricity received by the second reflective metal portion 22 is filtered to a certain extent, so that the influence of the static electricity received by the second reflective metal portion 22 is small, which is beneficial to avoiding the phenomenon of electrostatic damage of the second reflective metal portion 22, and even if the first reflective metal portion 21 is damaged due to the excessive static electricity, the second reflective metal portion 22 can still effectively reflect laser energy, thereby ensuring the packaging reliability of the packaging adhesive 30 and being beneficial to improving the packaging effect.
It should be noted that, when static electricity is located at one side of the light-emitting surface of the display panel, the static electricity will firstly act on the second reflective metal layer closer to the light-emitting surface, and because two static electricity discharge paths are introduced in the invention, namely the first reflective metal part and the second reflective metal part, the static electricity will be released from the two static electricity discharge paths after the external static electricity acts on the display panel, so that the possibility that the first reflective metal part and the second reflective metal part are damaged by static electricity is reduced to a great extent, and the antistatic capability and the packaging effect of the display panel are favorably improved.
In an alternative embodiment of the invention, please continue to refer to fig. 3, the orthogonal projection of the package adhesive 30 to the light-emitting surface is located within the orthogonal projection range of the first reflective metal part 21 to the light-emitting surface, and the orthogonal projection of the package adhesive 30 to the light-emitting surface is located within the orthogonal projection range of the second reflective metal part 22 to the light-emitting surface.
Specifically, in the direction perpendicular to the light emitting surface, the first reflective metal part 21 covers the package adhesive 30, and the second reflective metal part 22 also covers the package adhesive 30, so that in the laser curing process, the first reflective metal part 21 and the second reflective metal part 22 can reflect laser energy to the package adhesive 30, and the mode of reflecting laser energy by two layers of reflective metals is favorable for improving the curing reliability of the package adhesive 30, and further favorable for improving the overall packaging reliability of the display panel 100.
In an alternative embodiment of the present invention, please continue to refer to fig. 3, the display panel 100 further includes a first edge L1 disposed around the non-display area NA; the minimum distance between the edge of the packaging adhesive 30 and the first edge L1 is D0, the minimum distance between the edge of the first reflective metal part 21 and the first edge L1 is D1, the minimum distance between the edge of the second reflective metal part 22 and the first edge L1 is D2, and D0 is greater than D2 and is not less than D1. Alternatively, D0 > D2 > D1.
Specifically, on the side of the non-display area NA away from the display area AA, the first reflective metal part 21 and the second reflective metal part 22 are closer to the first edge L1 of the display panel 100 than the packaging adhesive 30, which is beneficial to enable the side of the packaging adhesive 30 close to the first edge L1 of the display panel 100 to obtain enough laser energy reflected by the first reflective metal part 21 and the second reflective metal part 22, thereby being beneficial to improving the packaging reliability of the packaging adhesive 30 in the area close to the first edge L1. In addition, when D0 > D2 > D1, the first reflective metal portion 21 is closer to the first edge L1 of the display panel 100 than the second reflective metal portion 22, when static electricity acts on the display panel 100 from the side of the display panel 100, the static electricity will be conducted through the first reflective metal portion 21 first, and if the static electricity is larger, the static electricity will be conducted through the second reflective metal portion 22, and the first reflective metal portion 21 and the second reflective metal portion 22 serve as two different static electricity transmission paths, so that the phenomenon that static electricity is gathered in the display panel 100 is effectively avoided, the possibility that the display panel 100 is subjected to static electricity damage is reduced, and therefore, the antistatic capability and the packaging reliability of the display panel 100 are improved.
Alternatively, fig. 13 is another plan view of the region Q in fig. 1, and this embodiment shows a case where the first and second holes K1 and K2 are simultaneously provided in the region Q, and a part of the first hole K1 and the second hole K2 communicate, and the first hole K1 which does not communicate with the second hole K2 is separately provided. At this time, the second opening K2 is farther from the first edge L1 than the first opening K1, that is, the second opening K2 is closer to the display area AA than the first opening K1. Therefore, the phenomenon that the side wall of the second reflective metal part is too thin and electrostatic damage is likely to occur when the second opening K2 is closer to the first edge L1 is avoided, so that the integrity of the second reflective metal part is guaranteed, the second reflective metal part can reliably reflect laser energy in the laser curing process, and the packaging reliability of the display panel is improved.
Based on the same inventive concept, the present application further provides a display device, and fig. 14 is a schematic diagram of the display device provided in the embodiment of the present application, where the display device 200 includes the display panel 100 provided in any one of the embodiments described above in the present application. According to the invention, the first reflective metal part and the second reflective metal part are introduced into the display device to serve as two electrostatic conduction paths, so that the laser energy can be reliably reflected to improve the packaging reliability, and the antistatic capability of a product is favorably improved.
It should be noted that, for the embodiments of the display device 200 provided in the embodiments of the present application, reference may be made to the embodiments of the display panel 100, and repeated descriptions are omitted. The display device 200 provided by the present application may be: any product or component with practical functions such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.
In summary, the display panel and the display device provided by the invention at least achieve the following beneficial effects:
in the display panel and the display device provided by the application, two reflective metal parts, namely the first reflective metal part and the second reflective metal part, which are arranged in different layers are introduced on the first substrate, the first reflective metal part and the second reflective metal part are overlapped with the orthographic projection of the light emitting surface of the packaging adhesive to the display panel, and the second reflective metal part at least covers one side edge of the first reflective metal part close to the display area. In the laser curing process, the first metal part and the second metal part can reflect laser energy to the packaging adhesive to provide curing capability for the packaging adhesive, so that the curing effect of the packaging adhesive is favorably improved. Particularly, the first reflective metal part and the second reflective metal part in the invention both receive a fixed level signal, wherein the first reflective metal part receives a first fixed level signal, the second reflective metal part receives a second fixed level signal, and the first reflective metal part and the second reflective metal part respectively form an electrostatic discharge path.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (13)
1. A display panel characterized by being provided with a display area and a non-display area surrounding the display area, the display panel comprising:
the first substrate and the second substrate are oppositely arranged;
the packaging adhesive is positioned between the first substrate and the second substrate, is positioned in the non-display area and surrounds the display area;
the first reflective metal part and the second reflective metal part are arranged on the first substrate and are arranged in different layers, the first reflective metal part and the second reflective metal part are both positioned in the non-display area, and the first reflective metal part and the second reflective metal part are overlapped with the orthographic projection of the packaging adhesive to the light-emitting surface of the display panel; the second reflective metal part at least covers one side edge of the first reflective metal part close to the display area;
the first reflective metal part receives a first fixed level signal, and the second reflective metal part receives a second fixed level signal.
2. The display panel according to claim 1, wherein the second reflective metal part is located between the encapsulant and the first reflective metal part in a direction perpendicular to the light exit surface; the display panel further comprises a first insulating layer, the first insulating layer is located between the packaging glue and the second reflection metal layer, and the packaging glue is in direct contact with the first insulating layer;
in the non-display area, the first reflective metal part includes a plurality of first openings extending in a direction perpendicular to the first reflective metal part.
3. The display panel according to claim 2, wherein the first opening penetrates the first reflective metal portion in a direction perpendicular to the light exit surface.
4. The display panel according to claim 2, wherein the second reflective metal portion comprises a plurality of second openings in the non-display area, and the second openings penetrate through the second reflective metal portion in a direction perpendicular to the light exit surface.
5. The display panel according to claim 4, wherein the second openings are disposed in a one-to-one correspondence with at least some of the first openings along a direction perpendicular to the light exit surface, and the first openings are communicated with the second openings.
6. The display panel according to claim 5, further comprising a first edge disposed around the non-display area; in the first opening and the second opening which are arranged in one-to-one correspondence, the minimum distance between the edge of the orthographic projection of the first opening to the light-emitting surface and the first edge is H1, the minimum distance between the edge of the orthographic projection of the second opening to the light-emitting surface and the first edge is H2, and H1 is greater than H2.
7. The display panel of claim 6, wherein H2 is 10 μm or more.
8. The display panel according to claim 1, wherein the non-display area comprises a sealing glue area and a first transition area, and an orthographic projection of the packaging glue on the light emitting surface coincides with the sealing glue area; the first transition area is positioned between the glue sealing area and the display area; the second reflective metal part extends from the glue sealing area to the first transition area.
9. The display panel according to claim 8, further comprising a first fixed-level signal line disposed at least partially around the display area, wherein the display area comprises a plurality of sub-pixels, the sub-pixels comprise an anode, a light-emitting layer, and a cathode, the light-emitting layer is disposed between the anode and the cathode in a direction perpendicular to the light exit surface, and the cathode is electrically connected to the first fixed-level signal line;
the second reflective metal portion is multiplexed as the first fixed-level signal line.
10. The display panel according to claim 1, further comprising a first edge disposed around the non-display area; the non-display area comprises a glue sealing area and a second transition area, and the orthographic projection of the packaging glue on the light emitting surface is superposed with the glue sealing area; the second transition area is positioned between the first edge and the glue sealing area;
the first reflective metal part extends from the glue sealing area to the second transition area.
11. The display panel of claim 1, wherein an orthogonal projection of the encapsulant onto the light exit surface is within an orthogonal projection range of the first reflective metal portion onto the light exit surface, and an orthogonal projection of the encapsulant onto the light exit surface is within an orthogonal projection range of the second reflective metal portion onto the light exit surface.
12. The display panel according to claim 11, further comprising a first edge disposed around the non-display region; the minimum distance between the edge of the packaging adhesive and the first edge is D0, the minimum distance between the edge of the first reflective metal part and the first edge is D1, and the minimum distance between the edge of the second reflective metal part and the first edge is D2, wherein D0 is more than D2 and is more than or equal to D1.
13. A display device characterized by comprising the display panel according to any one of claims 1 to 12.
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Effective date of registration: 20211022 Address after: No.8, liufangyuanheng Road, Donghu New Technology Development Zone, Wuhan City, Hubei Province, 430074 Applicant after: WUHAN TIANMA MICRO-ELECTRONICS Co.,Ltd. Applicant after: Wuhan Tianma Microelectronics Co.,Ltd. Shanghai Branch Address before: Room 509, building 1, No. 6111, Longdong Avenue, Pudong New Area, Shanghai, 201201 Applicant before: SHANGHAI TIANMA AM-OLED Co.,Ltd. |
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