Display panel, manufacturing method of display panel and display device

Abstract

The invention discloses a display panel, a manufacturing method of the display panel and a display device. The display panel provided by the invention comprises a driving substrate, a color film substrate and a liquid crystal layer, the color film substrate and the driving substrate are oppositely arranged at an interval; the liquid crystal layer is positioned between the driving substrate and the color film substrate; the driving substrate is provided with a first welding area surrounding the liquid crystal layer, the color film substrate is provided with a second welding area surrounding the liquid crystal layer, and the first welding area is melted through first welding laser incident from the side, away from the color film substrate, of the driving substrate to form a first welding part. And the second welding area is melted through second welding laser incident from the side, away from the driving substrate, of the color film substrate to form a second welding part, the first welding part and the second welding part are melted to the position between the driving substrate and the color film substrate, and the first welding part makes contact with the second welding part so that the color film substrate and the driving substrate can be welded and fixed. Therefore, through the first welding laser and the second welding laser, the welding stability of the driving substrate and the color film substrate is improved.

Description

Technical Field

[0001] The present application relates to the technical field of display panels, and in particular to a display panel, a method for manufacturing a display panel, and a display device. Background Art

[0002] With the continuous development of the industry, the application scenarios of display panels are becoming increasingly diverse. Different application scenarios have different requirements for display panels. For example, the driving substrate and color film substrate of the display panel can be laser welded to improve the anti-peeling and waterproof performance of the display panel.

[0003] At present, the focal depth of existing welding lasers is usually smaller than the distance between the driver substrate and the color filter substrate. The focal depth of a single welding laser is difficult to cover the driver substrate and the color filter substrate at the same time, resulting in insufficient laser energy. The driver substrate and the color filter substrate are difficult to be fully melted, which in turn leads to loose welding and the risk of reduced anti-peeling performance of the display panel. Summary of the Invention

[0004] The main purpose of this application is to provide a display panel and a display device, aiming to solve the above-mentioned technical problems existing in the prior art.

[0005] To solve the above problems, the present application provides a display panel, which includes a driving substrate, a color filter substrate and a liquid crystal layer; the color filter substrate and the driving substrate are opposite to each other and are spaced apart; the liquid crystal layer is located between the driving substrate and the color filter substrate; wherein the driving substrate has a first welding area surrounding the liquid crystal layer, and the color filter substrate has a second welding area surrounding the liquid crystal layer, the first welding area is partially melted by a first welding laser incident from the side of the driving substrate away from the color filter substrate to form a first welding portion, and the first welding portion is melted to between the driving substrate and the color filter substrate, the second welding area is partially melted by a second welding laser incident from the side of the color filter substrate away from the driving substrate to form a second welding portion, and the second welding portion is melted to between the driving substrate and the color filter substrate, wherein the first welding portion and the second welding portion are in contact to weld and fix the color filter substrate and the driving substrate.

[0006] In some embodiments, an orthographic projection of the first weld portion on the driving substrate and an orthographic projection of the second weld portion on the driving substrate at least partially overlap.

[0007] In some embodiments, one of an orthographic projection of the first welding portion on the driving substrate and an orthographic projection of the second welding portion on the driving substrate is located inside the other.

[0008] In some embodiments, the display panel also includes a first welding auxiliary layer, which is arranged between the driving substrate and the color filter substrate. The orthographic projection of the first welding auxiliary layer on the driving substrate at least partially overlaps with the first welding area, and the orthographic projection of the first welding auxiliary layer on the color filter substrate at least partially overlaps with the second welding area. The first welding auxiliary layer is used to weld and fix the driving substrate and the color filter substrate.

[0009] In some embodiments, the first welding auxiliary layer is connected to the first welding portion and the second welding portion respectively.

[0010] In some embodiments, the display panel also includes a second welding auxiliary layer, which is arranged on the side of the first welding auxiliary layer away from the liquid crystal layer, and extends along the spacing direction of the driving substrate and the color filter substrate to respectively connect the side end surface of the driving substrate and the side end surface of the color filter substrate.

[0011] In some embodiments, a thickness of the second welding auxiliary layer perpendicular to the spacing direction is greater than or equal to 100 um and less than or equal to 300 um.

[0012] To solve the above problems, the present application also provides a method for manufacturing a display panel, which is used to manufacture the above-mentioned display panel, and the method for manufacturing a display panel includes: providing a panel to be welded, wherein the panel to be welded includes a driving substrate, a color filter substrate and a liquid crystal layer, the driving substrate and the color filter substrate are arranged relative to each other, the liquid crystal layer is located between the driving substrate and the color filter substrate, the driving substrate has a first welding area surrounding the liquid crystal layer, and the color filter substrate has a second welding area surrounding the liquid crystal layer; irradiating the first welding area with a first welding laser incident from a side of the driving substrate away from the color filter substrate, the focal area of the first welding laser covers at least a portion of the first welding area, so as to melt a portion of the first welding area and form a first weld portion, and the first weld portion is melted between the driving substrate and the color filter substrate; irradiating the second welding area with a second welding laser incident from a side of the color filter substrate away from the driving substrate, the focal area of the second welding laser covers at least a portion of the second welding area, so as to melt a portion of the second welding area and form a second weld portion, and the second weld portion is melted between the driving substrate and the color filter substrate.

[0013] In some embodiments, the step of irradiating the second welding area with a second welding laser incident from the side of the color filter substrate facing away from the driving substrate, and covering at least a portion of the second welding area with the focal area of the second welding laser includes: the second focal area of the second welding laser at least partially overlaps with the first focal area of the first welding laser, so that the first welding portion and the second welding portion are in contact, and the color filter substrate and the driving substrate are welded and fixed.

[0014] To solve the above problems, the present application also provides a display device, which includes the above display panel.

[0015] Compared with the prior art, the display panel of the present application includes a driving substrate, a color filter substrate and a liquid crystal layer; the color filter substrate and the driving substrate are opposite to each other and are spaced apart; the liquid crystal layer is located between the driving substrate and the color filter substrate; wherein the driving substrate has a first welding area surrounding the liquid crystal layer, and the color filter substrate has a second welding area surrounding the liquid crystal layer, the first welding area is partially melted by a first welding laser incident from the side of the driving substrate away from the color filter substrate to form a first welding portion, and the first welding portion is melted to between the driving substrate and the color filter substrate, the second welding area is partially melted by a second welding laser incident from the side of the color filter substrate away from the driving substrate to form a second welding portion, and the second welding portion is melted to between the driving substrate and the color filter substrate, wherein the first welding portion and the second welding portion are in contact to weld and fix the color filter substrate and the driving substrate. Through the above embodiment, the first welding area and the second welding area can be partially melted to form the first welding portion and the second welding portion respectively by the first welding laser incident from the side of the driving substrate away from the color filter substrate and the second welding laser incident from the side of the color filter substrate away from the driving substrate. The first welding portion and the second welding portion are melted to between the driving substrate and the color filter substrate and contact each other, thereby improving the welding stability between the color filter substrate and the driving substrate. Therefore, the first welding laser can fully melt a portion of the first welding area, and the second welding laser can fully melt the second welding area. Through the mutual cooperation of the first welding laser and the second welding laser, the welding stability of the driving substrate and the color filter substrate is improved, and the risk of loose welding due to insufficient melting of the driving substrate and the color filter substrate is alleviated, thereby improving the waterproof performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 is a schematic structural diagram of a display device according to one or more embodiments of the present application;

[0018] Figure 2 is a first structural schematic diagram of a display panel according to one or more embodiments of the present application;

[0019] Figure 3 is a second structural schematic diagram of a display panel according to one or more embodiments of the present application;

[0020] Figure 4 is a third structural schematic diagram of a display panel according to one or more embodiments of the present application;

[0021] Figure 5 is a fourth structural schematic diagram of a display panel according to one or more embodiments of the present application;

[0022] Figure 6 is a fifth structural diagram of a display panel according to one or more embodiments of the present application;

[0023] Figure 7 is a schematic flow chart of a method for manufacturing a display panel according to one or more embodiments of the present application;

[0024] Figure 8 It is a schematic structural diagram of a panel to be welded according to one or more embodiments of the present application.

[0025] Figure 1: Display device 1; display panel 2; panel to be welded 3; first welding laser 4; first focal area 41; second welding laser 5; second focal area 51; drive substrate 10; first welding area 11; first welding portion 111; color filter substrate 20; second welding area 21; second welding portion 211; liquid crystal layer 30; first welding auxiliary layer 40; second welding auxiliary layer 50; spacing direction x1. DETAILED DESCRIPTION

[0026] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0028] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0029] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0030] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0031] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0032] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0033] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0034] With the continuous development of the industry, the application scenarios of display panels are becoming increasingly diverse. Different application scenarios have different requirements for display panels. For example, the driving substrate and color film substrate of the display panel can be laser welded to improve the anti-peeling performance of the display panel.

[0035] At present, the focal depth of existing welding lasers is usually smaller than the distance between the driver substrate and the color filter substrate. The focal depth of a single welding laser is difficult to cover the driver substrate and the color filter substrate at the same time, resulting in insufficient laser energy. The driver substrate and the color filter substrate are difficult to be fully melted, which in turn leads to loose welding and the risk of reduced anti-peeling performance of the display panel.

[0036] The present application provides a display device, which may include but is not limited to mobile phones, tablets, laptops, televisions, desktops, terminals, interactive displays, digital audio and video equipment, Internet of Things devices, and the like. Interactive displays may include interactive whiteboards, interactive digital advertising screens, and interactive game displays, and the like. Internet of Things devices may include smart home devices and smart wearable devices, and the like. The display device may include a display panel, which may provide a display interface and touch input to implement corresponding functions.

[0037] Please refer to Figure 1 , Figure 1 is a schematic structural diagram of a display device according to one or more embodiments of the present application.

[0038] The display device 1 can be an ordinary mobile phone, a feature phone or a smart phone. The smart phone can be a flat-screen phone, a curved-screen phone or a foldable phone, etc. The display device 1 is provided with a display panel 2, which can be provided at the head, middle or tail of the display device 1. The display panel 2 can be used to display information of the display device 1. For example, the display panel 2 can serve as the visual information display part of the display device 1. The display panel 2 can also serve as a touch information input part, which is used to facilitate the user to operate the display device 1 by touching the display panel 2, for example, for display and input requirements during interface navigation and function switching of the display device 1. The display device 1 can also include an outer shell, and the display panel 2 is installed in the outer shell. The outer shell can protect the display panel 2 and reduce the risk of damage to the display panel 2 by external force.

[0039] The present application provides a method for manufacturing a display panel to solve the above-mentioned problem.

[0040] Please refer to Figure 2-Figure 3 , Figure 2 is a first structural schematic diagram of a display panel according to one or more embodiments of the present application; Figure 3 2 is a second structural diagram of a display panel according to one or more embodiments of the present application.

[0041] To solve the above problems, the present application provides a display panel 2, which includes a driving substrate 10, a color filter substrate 20, and a liquid crystal layer 30; the color filter substrate 20 is arranged opposite to the driving substrate 10 and spaced apart; the liquid crystal layer 30 is located between the driving substrate 10 and the color filter substrate 20; wherein the driving substrate 10 has a first welding area 11 surrounding the liquid crystal layer 30, and the color filter substrate 20 has a second welding area 21 surrounding the liquid crystal layer 30, and the first welding area 11 is formed by a side of the driving substrate 10 facing away from the color filter substrate 20. The incident first welding laser 4 partially melts to form a first welding portion 111, and the first welding portion 111 melts to between the driving substrate 10 and the color filter substrate 20. The second welding area 21 is partially melted by the second welding laser 5 incident from the side of the color filter substrate 20 away from the driving substrate 10 to form a second welding portion 211, and the second welding portion 211 melts to between the driving substrate 10 and the color filter substrate 20. The first welding portion 111 and the second welding portion 211 are in contact so that the color filter substrate 20 and the driving substrate 10 are welded and fixed.

[0042] The drive substrate 10 can be used to drive the liquid crystal layer 30 for display. Specifically, the drive substrate 10 may include a base substrate and a drive electrode layer located on the base substrate. The liquid crystal layer 30 may be electrically connected to the drive electrode layer, thereby driving the liquid crystal layer 30 for display. The base substrate may be made of a hard material such as glass, so that it supports the drive electrode layer. The color filter substrate 20 can be used to filter light within a specific wavelength range to adjust the color displayed by the display panel 2. Specifically, the color filter substrate 20 may include a base substrate and a color filter located on the base substrate. The liquid crystal layer 30 may be disposed corresponding to the color filter, so that the color filter filters filter light within a specific wavelength range. The base substrate may be made of a hard material such as glass, so that it supports the color filter. The liquid crystal layer 30 may include liquid crystal and functional layers that assist the operation of the liquid crystal. The drive substrate 10 has two opposing main surfaces, and the color filter substrate 20 also has two opposing main surfaces. The liquid crystal layer 30 may be disposed on both the opposing main surfaces of the drive substrate 10 and the color filter substrate 20.

[0043] The first welding region 11 may not require a corresponding electrode layer, or the electrode layer arranged in the first welding region 11 will not interfere with the driving electrode layer corresponding to the liquid crystal layer 30. Therefore, when the first weld 111 is formed in the first welding region 11, the driving electrode layer corresponding to the liquid crystal layer 30 will not be affected, that is, the display effect of the display panel 2 will not be affected. The second welding region 21 may not require a corresponding color filter film, or the color filter film arranged in the second welding region 21 will not interfere with the color filter film corresponding to the liquid crystal layer 30. Therefore, when the second weld 211 is formed in the second welding region 21, the color filter layer corresponding to the liquid crystal layer 30 will not be affected, that is, the display effect of the display panel 2 will not be affected. In some application scenarios, the width of the first welding area 11 and the second welding area 21 in the direction away from the liquid crystal layer 30 may be between 300um-500um. For example, the width may be between 300um-400um, between 400um-450um, or between 450um-500um. Specifically, the width may include but is not limited to 300um, 350um, 400um, 460um, 470um, 500um, and the like.

[0044] The first welding laser 4 and the second welding laser 5 can be emitted by a laser. For example, the driving substrate 10 and the color filter substrate 20 can both be glass substrates. The first welding laser 4 and the second welding laser 5 can be emitted by a femtosecond laser, and the glass surface can be scanned by a long-focal-length focusing lens. The driving substrate 10 absorbs the energy of the first welding laser 4 and melts, and the color filter substrate 20 absorbs the energy of the second welding laser 5 and melts. It should be noted that the driving substrate 10 absorbing the energy of the first welding laser 4 and melting does not mean that the driving substrate 10 only absorbs the energy of the first welding laser 4, but rather that the energy received by the driving substrate 10 from the first welding laser 4 is sufficient to melt. In specific application scenarios, the driving substrate 10 can simultaneously receive the energy of the first welding laser 4 and the energy of the second welding laser 5. Similarly, the color filter substrate 20 absorbing the energy of the second welding laser 5 and melting does not mean that the color filter substrate 20 only absorbs the energy of the second welding laser 5, but rather that the energy received by the color filter substrate 20 from the second welding laser 5 is sufficient to melt. In specific application scenarios, the color filter substrate 20 can simultaneously receive the energy of the first welding laser 4 and the energy of the second welding laser 5. The first welding laser 4 is incident from the side of the driver substrate 10 facing away from the color filter substrate 20, and the second welding laser 5 is incident from the side of the color filter substrate 20 facing away from the driver substrate 10. For example, the first welding laser 4 may be incident perpendicularly to the surface of the driver substrate 10, and the second welding laser 5 may be incident perpendicularly to the surface of the color filter substrate 20. It is understood that the first welding laser 4 and the second welding laser 5 may have independent focal points and have higher energy near their respective focal points. The first welding region 11 may be located near the focal point of the first welding laser 4 and receive energy, and the second welding region 21 may be located near the focal point of the second welding laser 5 and receive energy. This allows the first welding region 11 and the second welding region 21 to melt, forming a first weld 111 and a second weld 211, respectively. The first weld 111 and the second weld 211 both melt between the driver substrate 10 and the color filter substrate 20, contacting each other, thereby welding and fixing the color filter substrate 20 to the driver substrate 10. It should be noted that the first weld 111 may be in direct or indirect contact with the second weld 211. For example, the first weld 111 and the second weld 211 may be in indirect contact via a welding material other than the driver substrate 10 and the color filter substrate 20. In some applications, the first welding laser 4 and the second welding laser 5 may be incident at the same time, that is, the first weld 111 and the second weld 211 are simultaneously molten and in contact with each other, thereby welding and fixing the color filter substrate 20 and the driver substrate 10 after the first weld 111 and the second weld 211 have cooled.

[0045] Through the above embodiment, the first welding laser 4 incident from the side of the driving substrate 10 away from the color filter substrate 20 and the second welding laser 5 incident from the side of the color filter substrate 20 away from the driving substrate 10 can respectively partially melt the first welding area 11 and the second welding area 21 to form the first welding portion 111 and the second welding portion 211. The first welding portion 111 and the second welding portion 211 are melted between the driving substrate 10 and the color filter substrate 20 and contact each other, thereby improving the welding stability between the color filter substrate 20 and the driving substrate 10. Therefore, the first welding laser 4 can fully melt a portion of the first welding area 11, and the second welding laser 5 can fully melt the second welding area 21. Through the cooperation of the first welding laser 4 and the second welding laser 5, the welding stability of the driving substrate 10 and the color filter substrate 20 is improved, and the risk of insufficient melting of the driving substrate 10 and the color filter substrate 20 resulting in loose welding is alleviated, thereby improving the waterproof performance of the display panel 2.

[0046] In some embodiments, the orthographic projection of the first welding portion 111 on the driving substrate 10 and the orthographic projection of the second welding portion 211 on the driving substrate 10 at least partially overlap. For example, the orthographic projection of the first welding portion 111 on the driving substrate 10 and the orthographic projection of the second welding portion 211 on the driving substrate 10 may partially overlap or completely overlap. It is understandable that by making the orthographic projection of the first welding portion 111 on the driving substrate 10 and the orthographic projection of the second welding portion 211 on the driving substrate 10 at least partially overlap, the first welding portion 111 and the second welding portion 211 are facilitated to better contact each other, thereby improving the welding stability of the first welding portion 111 and the second welding portion 211, thereby improving the welding stability of the driving substrate 10 and the color filter substrate 20, and reducing the risk of the driving substrate 10 and the color filter substrate 20 peeling off from each other.

[0047] In some embodiments, one of the orthographic projection of the first weld portion 111 on the drive substrate 10 and the orthographic projection of the second weld portion 211 on the drive substrate 10 is located within the other. For example, the area of the orthographic projection of the first weld portion 111 on the drive substrate 10 may be greater than the area of the orthographic projection of the second weld portion 211 on the drive substrate 10, and the orthographic projection of the second weld portion 211 is located within the orthographic projection of the first weld portion 111. Alternatively, the area of the orthographic projection of the first weld portion 111 on the drive substrate 10 may be less than the area of the orthographic projection of the second weld portion 211 on the drive substrate 10, and the orthographic projection of the first weld portion 111 is located within the orthographic projection of the second weld portion 211. Alternatively, the area of the orthographic projection of the first weld portion 111 on the drive substrate 10 may be equal to the area of the orthographic projection of the second weld portion 211 on the drive substrate 10, and the orthographic projections of the first weld portion 111 and the second weld portion 211 overlap. Therefore, by having one of the orthographic projection of the first welding portion 111 on the driving substrate 10 and the orthographic projection of the second welding portion 211 on the driving substrate 10 located within the other, the first welding portion 111 and the second welding portion 211 can be further facilitated to better contact each other, thereby improving the welding stability of the first welding portion 111 and the second welding portion 211, and further improving the welding stability of the driving substrate 10 and the color filter substrate 20, and alleviating the risk of the driving substrate 10 and the color filter substrate 20 peeling off from each other.

[0048] Combine Figure 4-Figure 5 , Figure 4 is a third structural schematic diagram of a display panel according to one or more embodiments of the present application; Figure 5 4 is a schematic diagram of the structure of a display panel according to one or more embodiments of the present application.

[0049] In some embodiments, the display panel 2 further includes a first welding auxiliary layer 40, which is disposed between the driver substrate 10 and the color filter substrate 20. The orthographic projection of the first welding auxiliary layer 40 on the driver substrate 10 at least partially overlaps with the first welding area 11, and the orthographic projection of the first welding auxiliary layer 40 on the color filter substrate 20 at least partially overlaps with the second welding area 21. The first welding auxiliary layer 40 is used to weld and secure the driver substrate 10 and the color filter substrate 20. The orthographic projection of the first welding auxiliary layer 40 on the driver substrate 10 at least partially overlaps with the first welding area 11, and the orthographic projection of the first welding auxiliary layer 40 on the color filter substrate 20 at least partially overlaps with the second welding area 21. The first welding auxiliary layer 40 can be formed of a welding auxiliary material, which can include, but is not limited to, polyamide, epoxy resin, unsaturated polyester resin, and the like. Taking unsaturated polyester resin as an example, a solid unsaturated polyester resin can be placed between the first welding area 11 and the second welding area 21. The unsaturated polyester resin is melted by the first welding laser 4 and the second welding laser 5 to seal the gap between the color filter substrate 20 and the driver substrate 10. After the unsaturated polyester resin solidifies, it forms the first welding auxiliary layer 40. It will be understood that the first welding auxiliary layer 40 can simultaneously contact the driver substrate 10 and the color filter substrate 20, thereby assisting the first welding portion 111 and the second welding portion 211 in welding and fixing the driver substrate 10 and the color filter substrate 20, thereby improving the welding stability of the driver substrate 10 and the color filter substrate 20.

[0050] In some embodiments, the first welding auxiliary layer 40 is connected to the first welding portion 111 and the second welding portion 211, respectively. In some application scenarios, the first welding portion 111 and the second welding portion 211 may be in direct contact, and the first welding auxiliary layer 40 is connected to the first welding portion 111 and the second welding portion 211, respectively, thereby increasing the indirect contact area between the first welding portion 111 and the second welding portion 211. In other application scenarios, the first welding portion 111 and the second welding portion 211 are spaced apart from each other, and the first welding auxiliary layer 40 may fill the gap between the first welding portion 111 and the second welding portion 211, thereby indirectly connecting the first welding portion 111 and the second welding portion 211. As a result, the first welding auxiliary layer 40 can better connect the first welding portion 111 and the second welding portion 211, thereby improving the connection stability between the drive substrate 10 and the color filter substrate 20.

[0051] Combine Figure 6 , Figure 6 4 is a fifth structural diagram of a display panel according to one or more embodiments of the present application.

[0052] In some embodiments, the display panel 2 further includes a second welding auxiliary layer 50. The second welding auxiliary layer 50 is disposed on a side of the first welding auxiliary layer 40 facing away from the liquid crystal layer 30 and extends along the spacing direction x1 between the drive substrate 10 and the color filter substrate 20 to connect the side end surfaces of the drive substrate 10 and the color filter substrate 20, respectively. The material of the second welding auxiliary layer 50 can be the same as or different from that of the first welding auxiliary layer 40. For example, the second welding auxiliary layer 50 can be formed from a welding auxiliary material, which can include, but is not limited to, polyamide, epoxy resin, unsaturated polyester resin, and the like. For example, using unsaturated polyester resin, a solid unsaturated polyester resin can be applied to the first welding auxiliary material, the side end surfaces of the drive substrate 10, and the side end surfaces of the color filter substrate 20. The unsaturated polyester resin is then melted by the first welding laser 4 and the second welding laser 5 to melt and connect the side end surfaces of the color filter substrate 20 and the side end surfaces of the drive substrate 10. After the unsaturated polyester resin solidifies, the second welding auxiliary layer 50 is formed. Thus, the gap between the driving substrate 10 and the color filter substrate 20 can be further sealed by the second welding auxiliary layer 50 , thereby improving the connection stability between the driving substrate 10 and the color filter substrate 20 .

[0053] In some embodiments, the thickness of the second welding auxiliary layer 50 perpendicular to the spacing direction x1 is greater than or equal to 100 μm and less than or equal to 300 μm. For example, the thickness of the second welding auxiliary layer 50 can be between 100 μm and 150 μm, or between 150 μm and 200 μm, or between 200 μm and 300 μm. Specifically, the thickness of the second welding auxiliary layer 50 can be 150 μm, 170 μm, 190 μm, 200 μm, 250 μm, 270 μm, 300 μm, and so on. Thus, the greater thickness of the second welding auxiliary layer 50 can further improve the connection stability between the drive substrate 10 and the color filter substrate 20.

[0054] Combine Figure 7-Figure 8 Figure 7 is a schematic flow chart of a method for manufacturing a display panel according to one or more embodiments of the present application; Figure 8 It is a schematic structural diagram of a panel to be welded according to one or more embodiments of the present application.

[0055] To solve the above problem, the present application further provides a method for manufacturing a display panel 2. The method for manufacturing a display panel 2 is used to manufacture the above display panel 2. The method for manufacturing a display panel 2 comprises the following steps:

[0056] Step S11: providing a panel to be welded, wherein the panel to be welded includes a driving substrate, a color filter substrate and a liquid crystal layer, the driving substrate and the color filter substrate are relatively spaced apart, the liquid crystal layer is located between the driving substrate and the color filter substrate, the driving substrate has a first welding area surrounding the liquid crystal layer, and the color filter substrate has a second welding area surrounding the liquid crystal layer.

[0057] The panel 3 to be welded includes a drive substrate 10, a color filter substrate 20, and a liquid crystal layer 30. The drive substrate 10 can be used to drive the liquid crystal layer 30 for display. Specifically, the drive substrate 10 includes a base substrate and a drive electrode layer located on the base substrate. The liquid crystal layer 30 can be electrically connected to the drive electrode layer to drive the liquid crystal layer 30 for display. The base substrate can be made of a hard material such as glass, so that it can support the drive electrode layer. The color filter substrate 20 can be used to filter light within a specific wavelength range to adjust the color displayed by the display panel 2. Specifically, the color filter substrate 20 includes a base substrate and a color filter located on the base substrate. The liquid crystal layer 30 can be arranged corresponding to the color filter to filter light within a specific wavelength range. The base substrate can be made of a hard material such as glass, so that it can support the color filter. The liquid crystal layer 30 can include liquid crystal and functional layers that assist the operation of the liquid crystal. The driving substrate 10 has two opposite main surfaces, and the color filter substrate 20 also has two opposite main surfaces. The liquid crystal layer 30 can be simultaneously disposed on the opposite main surfaces of the driving substrate 10 and the color filter substrate 20 .

[0058] Step S12: Irradiating the first welding area with a first welding laser incident from the side of the driver substrate facing away from the color filter substrate. The focal area of the first welding laser covers at least a portion of the first welding area to melt a portion of the first welding area and form a first weld portion. The first weld portion is melted between the driver substrate and the color filter substrate.

[0059] The first focal region 41 may refer to the focal depth range of the first welding laser 4, that is, the region near the focal point of the first welding laser 4 that can provide sufficient energy to the first welding region 11 to fully melt the first welding region 11. Specifically, the first welding laser 4 can provide energy to the first welding region 11, thereby melting a portion of the first welding region 11 and forming a first weld 111. In the molten state, the first weld 111 extends between the driver substrate 10 and the color filter substrate 20. In some application scenarios, the length of the first focal region 41 in the axial direction of the first welding laser 4 may be less than or equal to the spacing between the driver substrate 10 and the color filter substrate 20. For example, the length of the first focal region 41 in the axial direction of the first welding laser 4 is 3 μm, and the spacing between the driver substrate 10 and the color filter substrate 20 is between 3 μm and 5 μm. The first focal region 41 covers at least a portion of the first welding region 11 and also covers a portion of the spacing between the driver substrate 10 and the color filter substrate 20.

[0060] Step S13: Irradiating the second welding area with a second welding laser incident from the side of the color filter substrate facing away from the drive substrate. The focal area of the second welding laser covers at least a portion of the second welding area to melt a portion of the second welding area and form a second weld portion. The second weld portion is melted between the drive substrate and the color filter substrate.

[0061] The second focal region 51 may refer to the focal depth range of the second welding laser 5, that is, the region near the focal point of the second welding laser 5 within which sufficient energy can be provided to the second welding region 21 to fully melt the second welding region 21. Specifically, the second welding laser 5 may provide energy to the second welding region 21, thereby causing a portion of the second welding region 21 to melt and form a second weld 211. In the molten state, the second weld 211 extends between the driver substrate 10 and the color filter substrate 20. In some application scenarios, the length of the second focal region 51 in the axial direction of the second welding laser 5 may be less than or equal to the spacing between the driver substrate 10 and the color filter substrate 20. For example, the length of the second focal region 51 in the axial direction of the second welding laser 5 is 3 μm, and the spacing between the driver substrate 10 and the color filter substrate 20 is between 3 μm and 5 μm. The second focal region 51 covers at least a portion of the second welding region 21 and also covers a portion of the spacing between the driver substrate 10 and the color filter substrate 20. It should be noted that the second welding laser 5 can be incident at the same time as the first welding laser 4, thereby facilitating the welding connection of the first welding portion 111 and the second welding portion 211 in a molten state, thereby improving the welding stability of the driving substrate 10 and the color filter substrate 20.

[0062] In some embodiments, step S13 includes: the second focal region of the second welding laser at least partially overlaps with the first focal region of the first welding laser, so that the first welding portion and the second welding portion contact each other, and the color filter substrate and the driving substrate are welded and fixed.

[0063] It is understood that the first focal region 41 and the second focal region 51 at least partially overlap, so that the melted material in the first focal region 41 and the second focal region 51 contacts at the overlap between the first focal region 41 and the second focal region 51, thereby welding and fixing the color filter substrate 20 to the driver substrate 10. For example, the first weld 111 can melt to the overlap between the first focal region 41 and the second focal region 51, and the second weld 211 can also melt to the overlap between the first focal region 41 and the second focal region 51, thereby facilitating contact between the first weld 111 and the second weld 211, thereby improving the connection stability between the driver substrate 10 and the color filter substrate 20.

[0064] In summary, the display panel 2 of the present application includes a driving substrate 10, a color filter substrate 20, and a liquid crystal layer 30; the color filter substrate 20 is opposite to the driving substrate 10 and spaced apart; the liquid crystal layer 30 is located between the driving substrate 10 and the color filter substrate 20; wherein the driving substrate 10 has a first welding area 11 surrounding the liquid crystal layer 30, and the color filter substrate 20 has a second welding area 21 surrounding the liquid crystal layer 30. The first welding area 11 is partially melted by a first welding laser 4 incident from the side of the driving substrate 10 away from the color filter substrate 20 to form a first welding portion 111, and the first welding portion 111 is melted between the driving substrate 10 and the color filter substrate 20. The second welding area 21 is partially melted by a second welding laser 5 incident from the side of the color filter substrate 20 away from the driving substrate 10 to form a second welding portion 211, and the second welding portion 211 is melted between the driving substrate 10 and the color filter substrate 20. The first welding portion 111 and the second welding portion 211 are in contact with each other to weld and fix the color filter substrate 20 and the driving substrate 10. Through the above embodiment, the first welding laser 4 incident from the side of the driving substrate 10 away from the color filter substrate 20 and the second welding laser 5 incident from the side of the color filter substrate 20 away from the driving substrate 10 can respectively melt the first welding area 11 and the second welding area 21 to form the first welding portion 111 and the second welding portion 211. The first welding portion 111 and the second welding portion 211 are melted between the driving substrate 10 and the color filter substrate 20 and contact each other, thereby improving the welding stability between the color filter substrate 20 and the driving substrate 10. Therefore, the first welding laser 4 can fully melt a portion of the first welding area 11, and the second welding laser 5 can fully melt the second welding area 21. The cooperation between the first welding laser 4 and the second welding laser 5 improves the welding stability of the driving substrate 10 and the color filter substrate 20, and alleviates the risk of insufficient melting of the driving substrate 10 and the color filter substrate 20, resulting in a loose weld.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A display panel, characterized in that: The display panel includes: Driver substrate; a color filter substrate, opposite to and spaced from the driving substrate; a liquid crystal layer, located between the driving substrate and the color filter substrate; The driving substrate has a first welding area surrounding the liquid crystal layer, and the color filter substrate has a second welding area surrounding the liquid crystal layer. The first welding area is partially melted by a first welding laser incident from a side of the driving substrate away from the color filter substrate to form a first welding portion, and the first welding portion is melted between the driving substrate and the color filter substrate. The second welding area is partially melted by a second welding laser incident from a side of the color filter substrate away from the driving substrate to form a second welding portion, and the second welding portion is melted between the driving substrate and the color filter substrate. The first welding portion and the second welding portion are in contact to weld and fix the color filter substrate and the driving substrate.

2. The display panel according to claim 1, wherein: An orthographic projection of the first fusion portion on the drive substrate and an orthographic projection of the second fusion portion on the drive substrate at least partially overlap.

3. The display panel according to claim 2, wherein: One of an orthographic projection of the first fusion portion on the drive substrate and an orthographic projection of the second fusion portion on the drive substrate is located inside the other.

4. The display panel according to any one of claims 1 to 3, wherein: The display panel also includes a first welding auxiliary layer, which is arranged between the driving substrate and the color filter substrate. The orthographic projection of the first welding auxiliary layer on the driving substrate at least partially overlaps with the first welding area, and the orthographic projection of the first welding auxiliary layer on the color filter substrate at least partially overlaps with the second welding area. The first welding auxiliary layer is used to weld and fix the driving substrate and the color filter substrate.

5. The display panel according to claim 4, wherein: The first welding auxiliary layer is connected to the first welding portion and the second welding portion respectively.

6. The display panel according to claim 5, wherein: The display panel also includes a second welding auxiliary layer, which is arranged on the side of the first welding auxiliary layer away from the liquid crystal layer and extends along the spacing direction of the driving substrate and the color filter substrate to respectively connect the side end surface of the driving substrate and the side end surface of the color filter substrate.

7. The display panel according to claim 6, wherein: The thickness of the second welding auxiliary layer perpendicular to the spacing direction is greater than or equal to 100 um and less than or equal to 300 um.

8. A method for manufacturing a display panel, characterized in that: The method for manufacturing the display panel is used to manufacture the display panel according to any one of claims 1 to 7, and the method for manufacturing the display panel comprises: A panel to be welded is provided, wherein the panel to be welded comprises a driving substrate, a color filter substrate, and a liquid crystal layer, the driving substrate and the color filter substrate are spaced apart from each other, the liquid crystal layer is located between the driving substrate and the color filter substrate, the driving substrate has a first welding area surrounding the liquid crystal layer, and the color filter substrate has a second welding area surrounding the liquid crystal layer; irradiating the first welding area with a first welding laser incident from a side of the driving substrate facing away from the color filter substrate, wherein a focal area of the first welding laser covers at least a portion of the first welding area, thereby melting a portion of the first welding area and forming a first weld portion, wherein the first weld portion is melted between the driving substrate and the color filter substrate; The second welding area is irradiated with a second welding laser incident from a side of the color filter substrate facing away from the drive substrate. The focal area of the second welding laser covers at least a portion of the second welding area to melt a portion of the second welding area and form a second weld portion. The second weld portion is melted between the drive substrate and the color filter substrate.

9. The method for manufacturing a display panel according to claim 8, wherein: The step of irradiating the second welding area with a second welding laser incident from a side of the color filter substrate facing away from the drive substrate, so that a focal area of the second welding laser covers at least a portion of the second welding area, comprises: The second focal region of the second welding laser at least partially overlaps with the first focal region of the first welding laser, so that the first welding portion and the second welding portion are in contact, and the color filter substrate and the driving substrate are welded and fixed.

10. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1 to 7.

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