The present application claims priority to Chinese Patent Application No. 201811570370.3, filed on Dec. 21, 2018, the content of which is incorporated herein by reference in its entirety.
The present disclosure relates to the field of display technologies, and in particularly, to display panels and display devices. Currently, display panels are usually encapsulated with an encapsulant.
However, if the encapsulant 3′ and the bedding metal 4′ are in direct contact, when the display panel is affected by an external force, the encapsulant 3′ will detach from the bedding metal 4′ due to the poor contact performance of the encapsulant 3′ and the metal material, such that a gap may be formed between the two, which in turn causes the encapsulation to fail.
In view of the above, embodiments of the present disclosure provide display panels and display devices which avoid contact between an encapsulant and a first bedding metal, thereby improving the encapsulation effect of the display panel.
In one aspect, an embodiment of the present disclosure provides a display panel having a display area and a non-display area surrounding the display area. The display panel includes: a first substrate and a second substrate, the first substrate and the second substrate being arranged oppositely to each other. The non-display area includes a frit encapsulation area and the frit encapsulation area includes a first bedding metal, the first bedding metal is located on a side of the first substrate facing away from the second substrate.
In another aspect, an embodiment of the present disclosure provides an encapsulation method for the display panel provided in any embodiment of the present disclosure. The encapsulation method includes: providing a first substrate and a second substrate, the first substrate is provided with a first bedding metal, and the first bedding metal is located in a frit encapsulation area; providing an encapsulant on the first substrate, the encapsulant being located in the frit encapsulation area; affixing the first substrate on the second substrate, such that the bedding metal is located on a side of the first substrate facing away from the second substrate and overlaps with the encapsulant; and irradiating the frit encapsulation area with laser light along a direction from the second substrate toward the first bedding metal.
In still another aspect, an embodiment of the present disclosure provides a display device, including the display panel provided in any embodiment of the present disclosure.
This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This summary is not intended to identify key features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
In order to better illustrate technical solutions of embodiments of the present disclosure, the accompanying drawings are briefly described below. The drawings described below are merely a part of the embodiments of the present disclosure. Based on these drawings, those skilled in the art can obtain other drawings without any creative effort.
For a better understanding of the technical solutions of the present disclosure, the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings
It should be noted that the described embodiments are merely some embodiments of the present disclosure, but not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present disclosure without creative efforts are within the protection scope of the present disclosure.
The terms used in the embodiments of the present disclosure are merely for the purpose of describing particular embodiments and not intended to limit the present disclosure. Unless otherwise noted in the context, the singular form expressions “a”, “an”, “the” and “said” used in the embodiments and appended claims of the present disclosure are also intended to represent a plural form.
It should be understood that the term “and/or” as used herein merely indicates an association relationship to describe the associated object, meaning that there may be three relationships, for example, A and/or B may indicate three cases: A exists individually; A and B exist simultaneously; B exists individually. In addition, the character “/” as used herein generally indicates that the contextual associated objects are in an “or” relationship.
It should be understood that although the terms first, second, third, etc. may be used to describe the inorganic layers in the embodiments of the present disclosure, these inorganic layers should not be limited to these terms. These terms are only used to distinguish inorganic layers from each other. For example, the first inorganic layer may also be referred to as a second inorganic layer, and similarly, the second inorganic layer may also be referred to as a first inorganic layer without deviating from the scope of the embodiments of the present disclosure.
As shown in
It should be noted that, in order to achieve encapsulation of the display panel, the frit encapsulation area 5 further includes an encapsulant 7 located between the first substrate 3 and the second substrate 4. When encapsulating the display panel, a welding encapsulation process may be performed, that is, the encapsulant 7 is heated by the laser and then melts so as to bond the first substrate 3 and the second substrate 4 together to avoid intrusion of moisture and oxygen from the outside, thereby achieving stability of display performance. The encapsulant 7 in the embodiment of the present disclosure can be configured as a frit that contains a laser-absorbing pigment that changes to a fusion state after absorbing the laser, so that good adhesion and a better sealing effect can be achieved.
With reference again to
In display channels of the present disclosure, by providing the first bedding metal 6 on a side of the first substrate 3 facing away from the second substrate 4, it can be achieved that, on the one hand, when irradiating the frit encapsulation area 5 with a laser along a direction of the second substrate 4 toward the first bedding metal 6 during the encapsulation process, the first bedding metal 6 can reflect the laser so that the reflected laser is again irradiated onto the encapsulant 7 to improve the laser utilization rate and promote the absorption ability of the encapsulant 7 to the laser, thereby achieving a more ideal melting effect and improving the encapsulation effect; on the other hand, it is also possible to avoid direct contact between the encapsulant 7 and the first bedding metal 6, such that the problem of subsequent encapsulation failure caused by poor contact between the encapsulant 7 and the metal material is avoided, which improves the encapsulation stability of the display panel.
It can be understood that the touch electrodes 8 may include a touch sensing electrode and a touch driving electrode, and provide a touch driving signal to the touch driving electrode during touch detection, such that a coupling capacitance is formed between the touch sensing electrode and the touch driving electrode. When a finger touches the display panel, the coupling capacitance between the touch sensing electrode and the touch driving electrode at the touching position changes, based on which the touch position is determined.
In an embodiment, with reference to
Further, the first bedding metal 6 may also be electrically connected to a fixed potential. In an embodiment, the first bedding metal 6 is electrically connected to the ground signal terminal. With this arrangement, the static charge in the display panel can be exported via the first bedding metal 6 and the fixed potential terminal, such that the static charge is prevented from accumulating inside the display panel, due to which an electrostatic current may be generated, thereby further preventing the electrostatic current from breaking down the display components of the display area 1, which may affect display performance.
Some touch signal lines 9 are provided in the frit encapsulation area 5, and are reused as the first bedding metal 6, such that on the one hand, these touch signal lines 9 can be used to realize the reflection to the laser, and it is not required for the first bedding metal 6 to be provided additionally on the premise of improving the encapsulation effect of the display panel, thereby reducing the manufacturing cost; on the other hand, some touch signal lines 9 are provided in the frit encapsulation area 5 and the remaining touch signal lines 9 are provided in the peripheral trace area 10, which can reduce the space occupied by the touch signal lines 9 in the peripheral trace area 10, thereby reducing the width of the peripheral trace area 10, so as to better realize narrow border design.
Further, a spacing between two adjacent touch signal lines 9 in the frit encapsulation area 5 can be set to be smaller than a spacing between two adjacent touch signal lines 9 in the peripheral trace area 10. With such configuration, the arrangement density of the touch signal lines 9 in the frit encapsulation area 5 can be increased, and when the touch signal lines 9 are reused as the first bedding metal 6, the reflectivity to the laser can be increased, thereby further improving the encapsulation effect of the encapsulant 7.
In an embodiment, with reference to
When the first bedding metal 6 is reused as the entire touch signal lines 9, the number of the touch signal lines 9 serving as the first bedding metal 6 is large. In this way, not only the reflectivity of the touch signal line 9 (the first bedding metal 6) to the laser can be improved so as to improve the encapsulation effect of the encapsulant 7, but also it is not required for the first bedding metal 6 to be additionally provided, thereby reducing production cost. In addition, it is not necessary for the touch signal line 9 to occupy space in the peripheral trace area 10, which can reduce the border width to a greater extent.
In an embodiment, with reference again to
It should be noted that the shape of the first bedding metal 6 shown in
In an embodiment, with reference again to
In an embodiment, with reference again to
Since the encapsulant 7 is made of a glass adhesive material, the encapsulant 7 and the second substrate 4 are made to be in contact directly based on the good adhesion property of the glass adhesive material and the glass by configuring the area, which is corresponding to the frit encapsulation area 5, of the first inorganic layer 11 to be hollow, which improves the adhesion effect between the encapsulant 7 and the second substrate 4, thereby improving the encapsulation effect of the display panel.
By configuring the encapsulatant 7 to contact the second substrate 4 through the etching hole 17, a part of the encapsulant 7 can contact the second substrate 4 directly based on the good adhesion property of the glass adhesive material and the glass, which improves the adhesion effect between the encapsulant 7 and the second substrate 4, thereby improving the encapsulation effect of the display panel.
Alternatively, with reference again to
It should be noted that the first inorganic layer 11, the second inorganic layer 12, and the third inorganic layer 13 may include an inorganic layer such as a buffer layer or a gate insulation layer. The specific structure and function of the above inorganic layers are the same as those in the related art, which will not be described herein again.
In an embodiment, the first substrate 3 is a touch substrate, and the second substrate 4 is an array substrate. The array substrate is provided with multiple display units, and the display unit includes electrically connected pixel circuit and light-emitting element, and the light-emitting element emits light under the driving of the pixel circuit, to realize an image display of the display panel.
Based on the structure of the current array substrate, a large number of traces (such as connection traces between the data lines and the chip binding area 15) and binding pins are provided in the first non-display area 14. During the encapsulation process, by providing the second bedding metal 16 on the side of the second substrate 4 facing the first substrate 3, the laser irradiates on the encapsulant 7 along the direction of the first substrate 3 toward the second bedding metal 16 without irradiating on the second substrate 4, thereby avoiding the traces and the binding pins in the first non-display area 14 from being burned by the laser. It can be seen that, by providing the second bedding metal 16, it is also possible to avoid laser damage to the traces and binding pins under the premise that the encapsulation effect of the first non-display area 14 is improved, thereby improving the performance stability of the display panel.
As shown in
Step S1: providing a first substrate 3 and a second substrate 4, wherein the first substrate 3 is provided with a first bedding metal 6, and the first bedding metal 6 is located in the frit encapsulation area 5.
Step S2: providing an encapsulant 7 on the first substrate 3, wherein the encapsulant 7 is located in the frit encapsulation area 5.
Step S3: affixing the first substrate 3 on the second substrate 4, such that the first bedding metal 6 is located on the side of the first substrate 3 facing away from the second substrate 4 and overlaps with the encapsulant 7.
Step S4: irradiating the frit encapsulation area 5 with a laser along a direction from the second substrate 4 toward the first bedding metal 6.
With the encapsulation method provided by the embodiments of the present disclosure, when irradiating the frit encapsulation area 5 with the laser along the direction from the second substrate 4 toward the first bedding metal 6 during the encapsulation process, the first bedding metal 6 can reflect the laser, such that the reflected laser is again irradiated onto the encapsulant 7 to increase the irradiation temperature and promote the absorption capability of the encapsulant 7 to the laser, thereby achieving a more ideal melting effect and improving the encapsulation effect; on the other hand, it is also possible to avoid the encapsulant 7 from directly contacting the first bedding metal 6, such that the problem of subsequent encapsulation invalidation caused by poor contact between the encapsulant 7 and the metal material is avoided, thereby improving the encapsulation stability of the display panel.
Since the display device provided by the embodiments of the present disclosure includes the above display panel 100, the display device not only has a good encapsulation effect to avoid intrusion of moisture and oxygen from the outside and guarantees stability of the display performance, but also the subsequent encapsulation invalidation caused by poor contact between the encapsulant and the metal material can be avoided, thereby improving the encapsulation stability of the display panel.
While illustrative embodiments have been illustrated and described, it will be appreciated that any modification, equivalent substitution, improvement, etc., made within the spirit and scope of the present disclosure is intended to be included within the scope of the present disclosure.
Number | Date | Country | Kind |
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2018 1 1570370 | Dec 2018 | CN | national |
Number | Name | Date | Kind |
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20130026505 | Lee | Jan 2013 | A1 |
20150185903 | Park | Jul 2015 | A1 |
20160293883 | Hong | Oct 2016 | A1 |
20180013094 | Kim | Jan 2018 | A1 |
Number | Date | Country |
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105739154 | Jul 2016 | CN |
Number | Date | Country | |
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20200203658 A1 | Jun 2020 | US |