Display panel and light spot adjusting method in display panel packaging process

Abstract

The invention discloses a display panel and a light spot adjusting method in the packaging process of the display panel. In the display panel, a packaging area surrounds a display area; packaging glue is arranged in the packaging area; the reflective structure group comprises a first reflective structure and a second reflective structure, the first reflective structure is located on the side, close to the display area, of the packaging adhesive, and the second reflective structure is located on the side, away from the display area, of the packaging adhesive; the reflectivity of the first reflective structure is different from that of the second reflective structure. According to the technical scheme provided by the embodiment of the invention, the reflectivity of the first reflective structure and the reflectivity of the second reflective structure are different, so that when the laser spot irradiates an area outside the packaging adhesive, the energy of the light reflected by the first reflective structure is different from that of the light reflected by the second reflective structure; and the position of the laser spot is monitored and adjusted through the energy of the light reflected by the first light reflecting structure and the energy of the light reflected by the second light reflecting structure, so that the laser spot moves along the packaging adhesive for sintering, and the sintering precision is improved.

Description

Technical Field

[0001] This invention relates to the field of display panel packaging technology, and in particular to a display panel and a method for adjusting the light spot during the display panel packaging process. Background Technology

[0002] In recent years, the display panel industry has developed rapidly. Rigid board encapsulation is a crucial step in display panel production, and laser sealing machines are widely used on rigid board encapsulation production lines. During the use of laser sealing machines, the position of the laser spot relative to the silicone sealant is one of the most important parameters. How to adjust the laser spot position is a problem that urgently needs to be solved.

[0003] In the existing technology, the use of manual adjustment of the laser spot results in low sintering accuracy and waste of manpower when using a laser sealing machine for rigid board packaging laser sintering. Summary of the Invention

[0004] This invention provides a display panel and a method for adjusting the light spot during the display panel packaging process, in order to solve the problem of low sintering precision in the display panel packaging process and reduce manpower waste.

[0005] According to one aspect of the present invention, a display panel is provided, the display panel comprising: a display area and an encapsulation area, the encapsulation area surrounding the display area;

[0006] Encapsulating adhesive is provided within the encapsulation area;

[0007] At least one reflective structure group, the reflective structure group including a first reflective structure and a second reflective structure, the first reflective structure being located on the side of the encapsulating adhesive closer to the display area, and the second reflective structure being located on the side of the encapsulating adhesive farther from the display area; the first reflective structure and the second reflective structure have different reflectivities.

[0008] Optionally, in the reflective structure group, the first reflective structure and the second reflective structure are arranged opposite to each other on both sides of the encapsulating adhesive.

[0009] Optionally, the encapsulating adhesive includes a plurality of encapsulation parts connected in sequence, and each encapsulation part is provided with at least one reflective structure group;

[0010] The extension direction of the first reflective structure is parallel to the extension direction of the corresponding encapsulation part, and the extension direction of the second reflective structure is parallel to the extension direction of the corresponding encapsulation part.

[0011] Optionally, the shape of the first reflective structure in the reflective structure group is the same as the shape of the corresponding encapsulation part;

[0012] The shape of the second reflective structure in the reflective structure group is the same as the shape of the corresponding encapsulation part.

[0013] Optionally, in the reflective structure group corresponding to each encapsulation part, the length of the first reflective structure and the length of the second reflective structure are both less than the length of the encapsulation part;

[0014] In the reflective structure group corresponding to each package section, the width of the first reflective structure and the width of the second reflective structure are both smaller than the width of the package section.

[0015] Optionally, the first reflective structure and the second reflective structure may be made of different materials.

[0016] Optionally, the display panel may also include: an array substrate and a packaging substrate;

[0017] The array substrate and the packaging substrate are connected by encapsulating adhesive;

[0018] The reflective structure group is set on the array substrate.

[0019] According to another aspect of the present invention, a method for adjusting the light spot during the packaging process of a display panel is provided, the method comprising:

[0020] A laser is emitted toward a designated area of ​​the display panel, which includes the encapsulation area;

[0021] Based on the first energy of the laser reflected by the first reflective structure and / or the second energy of the laser reflected by the second reflective structure, the laser spot on the display panel is adjusted to the encapsulating adhesive in the encapsulation area.

[0022] Optionally, based on the first energy of the laser reflected by the first reflective structure and / or the second energy of the laser reflected by the second reflective structure, the laser spot on the display panel is adjusted to the encapsulating adhesive in the encapsulation area, including:

[0023] If the first energy is received, control the laser spot on the display panel to move towards the second reflective structure until the first energy is no longer received, and record the first position of the laser spot on the display panel;

[0024] The light spot is controlled to continue moving from the first position toward the second reflective structure by a first preset distance;

[0025] If the second energy is received, the laser spot on the display panel is controlled to move towards the first reflective structure until the second energy is no longer received, and the second position of the laser spot on the display panel is recorded.

[0026] The light spot is controlled to continue moving from the second position towards the first reflective structure by a first preset distance;

[0027] The distance between the side of the first reflective structure closest to the encapsulating adhesive and the side of the second reflective structure closest to the encapsulating adhesive is the second preset distance, and the first preset distance is equal to half of the second preset distance and the difference between the light spot radius.

[0028] Optionally, adjusting the laser spot on the display panel onto the encapsulating adhesive in the encapsulation area based on the first energy of the laser reflected by the first reflective structure and / or the second energy of the laser reflected by the second reflective structure, further includes:

[0029] If the first energy and the second energy are not received, the laser spot on the display panel is controlled to move towards the first reflective structure in a preset step size until the first energy is received;

[0030] Control the laser spot on the display panel to move a third preset distance toward the second reflective structure;

[0031] Or, if the first energy and the second energy are not received, the laser spot on the display panel is controlled to move toward the second reflective structure in a preset step size until the second energy is received;

[0032] Control the laser spot on the display panel to move a third preset distance toward the first reflective structure;

[0033] The distance between the side of the first reflective structure closest to the encapsulating adhesive and the side of the second reflective structure closest to the encapsulating adhesive is the second preset distance. The third preset distance is equal to half of the second preset distance minus the spot radius, and then added to the preset step size.

[0034] The technical solution of this invention involves setting a reflective structure group in the display panel, wherein the reflective structure group includes a first reflective structure and a second reflective structure. The first reflective structure and the second reflective structure have different reflectivities. When the laser spot irradiates an area outside the encapsulating adhesive, the energy of the light reflected by the first reflective structure is different from that of the second reflective structure. Therefore, the position of the laser spot is monitored and adjusted by the energy of the light reflected by the first reflective structure and the second reflective structure, so that the laser spot moves along the encapsulating adhesive for sintering, thereby improving sintering accuracy and reducing manpower waste.

[0035] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a top view structural diagram of a display panel according to an embodiment of the present invention;

[0038] Figure 2 This is a top view structural diagram of another display panel provided according to an embodiment of the present invention;

[0039] Figure 3 This is a cross-sectional structural diagram of a display panel according to an embodiment of the present invention;

[0040] Figure 4 This is a flowchart of a method for adjusting the light spot during the packaging process of a display panel according to an embodiment of the present invention;

[0041] Figure 5 This is a flowchart of another method for adjusting the light spot during the packaging process of a display panel according to an embodiment of the present invention;

[0042] Figure 6 This is a flowchart of another method for adjusting the light spot during the packaging process of a display panel according to an embodiment of the present invention. Detailed Implementation

[0043] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0044] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0045] Figure 1 This is a top view structural diagram of a display panel according to an embodiment of the present invention. Figure 1 As shown, the display panel includes: a display area 10 and an encapsulation area 20, the encapsulation area 20 surrounding the display area 10; an encapsulating adhesive 201 is disposed within the encapsulation area 20; at least one reflective structure group 30, the reflective structure group 30 including a first reflective structure 301 and a second reflective structure 302, the first reflective structure 301 being located on the side of the encapsulating adhesive 201 closer to the display area 10, and the second reflective structure 302 being located on the side of the encapsulating adhesive 201 away from the display area 10; the reflectivity of the first reflective structure 301 and the second reflective structure 302 is different.

[0046] In this embodiment of the invention, the display panel includes a display area 10 and an encapsulation area 20, with the encapsulation area 20 surrounding the display area 10. An encapsulating adhesive 201 is disposed within the encapsulation area 20 and surrounds the display area 10. When encapsulating the display panel, the encapsulating adhesive 201 needs to be fused to form a sealed structure to block water and oxygen, thereby improving the lifespan of the display panel. The material of the encapsulating adhesive 201 includes, but is not limited to, glass powder or ceramic powder, to facilitate stable sealing and bonding of the encapsulating adhesive 201.

[0047] During the laser sintering process of the encapsulating adhesive, to ensure that the laser spot is projected onto the encapsulating adhesive 201 area and avoids projecting into the display area 10 and causing damage, or to avoid projecting off-center from the encapsulating adhesive 201 area, resulting in low sintering accuracy, in this embodiment of the invention, the display panel is also provided with at least one reflective structure group 30, which includes a first reflective structure 301 and a second reflective structure 302. For example... Figure 1As shown, the first reflective structure 301 is located on the side of the encapsulating adhesive 201 closer to the display area 10, and the second reflective structure 302 is located on the side of the encapsulating adhesive 201 farther from the display area 10. The first reflective structure 301 and the second reflective structure 302 are disposed on opposite sides of the encapsulating adhesive 201. Since the reflectivities of the first reflective structure 301 and the second reflective structure 302 are different, the magnitude of the first energy reflected back after laser light irradiates the first reflective structure 301 is different from the magnitude of the second energy reflected back after laser light irradiates the second reflective structure 302.

[0048] In some optional embodiments of the present invention, the materials of the first reflective structure 301 and the second reflective structure 302 are different, so the reflectivity of the first reflective structure 301 and the second reflective structure 302 is different. Therefore, the energy received by the laser sealing machine is different. The position of the laser spot can be monitored and adjusted by the energy of the light reflected by the first reflective structure 301 and the energy of the light reflected by the second reflective structure 302, so that the laser spot moves along the encapsulating adhesive for sintering, thereby improving the sintering accuracy.

[0049] In another optional embodiment, the first reflective structure 301 and the second reflective structure 302 can be configured with different structures. For example, the surface flatness of the first reflective structure 301 and the second reflective structure 302 may be different. For instance, the surface of the first reflective structure 301 may be flat, while the surface of the second light-emitting structure 302 may have a surface including an uneven structure. Therefore, the reflectivity of the first reflective structure 301 and the second reflective structure 302 is different, resulting in different amounts of energy received by the laser sealing machine. The position of the laser spot can be monitored and adjusted by the energy of the light reflected by the first reflective structure 301 and the second reflective structure 302, thereby improving sintering accuracy.

[0050] For example, when sintering the encapsulating adhesive 201, the laser emitting module in the laser sintering machine can be located directly above or below the display panel, and the laser sintering machine includes a receiving module that receives the light reflected by the first reflective structure 301 and the second reflective structure 302. The receiving module can also be located on the same side as the laser emitting module. When the laser spot irradiates an area outside the encapsulating adhesive 201, the position of the laser spot can be monitored by the energy of the light reflected by the first reflective structure and the energy of the light reflected by the second reflective structure, and the movement of the laser spot can be controlled to adjust the position of the laser spot so that it falls on the area of ​​the encapsulating adhesive 201.

[0051] The technical solution of this invention involves setting a reflective structure group in the display panel, wherein the reflective structure group includes a first reflective structure and a second reflective structure. The first reflective structure and the second reflective structure have different reflectivities. When the laser spot irradiates an area outside the encapsulating adhesive, the energy of the light reflected by the first reflective structure is different from that of the second reflective structure. Therefore, the position of the laser spot is monitored and adjusted by the energy of the light reflected by the first reflective structure and the second reflective structure, so that the laser spot moves along the encapsulating adhesive for sintering, thereby improving sintering accuracy and reducing manpower waste.

[0052] Figure 2 This is a top view schematic diagram of another display panel provided according to an embodiment of the present invention. Figure 2 As shown, in the reflective structure group 30, the first reflective structure 301 and the second reflective structure 302 are arranged opposite to each other on both sides of the encapsulating adhesive 201.

[0053] In embodiments of the present invention, such as Figure 2 As shown, in the reflective structure group 30, the first reflective structure 301 and the second reflective structure 302 are arranged opposite each other on both sides of the encapsulating adhesive 201, facilitating the laser sealing machine to identify and adjust the position of the laser spot. The first reflective structure 301 and the second reflective structure 302 form a spot recognition and adjustment area relative to the encapsulating adhesive 201. When the laser spot falls on the first reflective structure 301, it can be adjusted to move towards the encapsulating adhesive 201; when the laser spot falls on the second reflective structure 302, it can be adjusted to move in the opposite direction. This facilitates the laser sealing machine's adjustment and control of the laser spot position, and also simplifies the manufacturing process of the display panel by adding the first reflective structure 301 and the second reflective structure 302, reducing complex designs. Simply arranging the first reflective structure 301 and the second reflective structure 302 opposite each other on both sides of the encapsulating adhesive 201 is sufficient to meet the requirements.

[0054] Based on the above-described embodiments of the invention, referencing Figure 2 As shown, the encapsulating adhesive 201 includes a plurality of encapsulation parts connected in sequence, and each encapsulation part is provided with at least one reflective structure group 30; the extension direction of the first reflective structure 301 is parallel to the extension direction of the corresponding encapsulation part, and the extension direction of the second reflective structure 302 is parallel to the extension direction of the corresponding encapsulation part.

[0055] In an embodiment of the present invention, for example, the encapsulating adhesive 201 includes four encapsulation parts connected in sequence, and each encapsulation part is provided with at least one reflective structure group 30. The reflective structure group 30 includes a first reflective structure 301 and a second reflective structure 302, and the first reflective structure 301 and the second reflective structure 302 are disposed on both sides of the corresponding encapsulation part.

[0056] The extending direction of the first reflective structure 301 is parallel to the extending direction of the corresponding encapsulation portion, and the extending direction of the second reflective structure 302 is parallel to the extending direction of the corresponding encapsulation portion. For example, such as... Figure 2 As shown, in the horizontal direction x, the display panel has two opposing encapsulation parts, each with a corresponding reflective structure group 30. The reflective structure group 30 includes a first reflective structure 301 and a second reflective structure 302, which are positioned on opposite sides of the corresponding encapsulation part. In the vertical direction y, the same structure is used, ensuring that the display panel manufacturing process does not involve additional complex processes. Furthermore, the laser sealing machine can determine and adjust the position of the laser spot based on the encapsulation part and the corresponding reflective structure group 30, improving the sintering accuracy during laser sintering.

[0057] Based on the above-described embodiments of the invention, referencing Figure 2 As shown, optionally, the shape of the first reflective structure 301 in the reflective structure group 30 is the same as the shape of the corresponding encapsulation part; the shape of the second reflective structure 302 in the reflective structure group 30 is the same as the shape of the corresponding encapsulation part.

[0058] In an embodiment of the present invention, for example, the shape of the display panel is rectangular, so the shape of the display area 10 is rectangular. The encapsulating adhesive 201 is disposed around the display area 10, so the shape of the encapsulation part is also rectangular. The shape of the first reflective structure 301 in the reflective structure group 30 is the same as the shape of the corresponding encapsulation part. When the shape of the encapsulation part is rectangular, the shape of the first reflective structure 301 is also rectangular. The shape of the second reflective structure 302 in the reflective structure group 30 is the same as the shape of the corresponding encapsulation part. When the shape of the encapsulation part is rectangular, the shape of the second reflective structure 302 is also rectangular.

[0059] For example, the shape of the display panel can also be circular, then the shape of the display area 10 is circular, and the encapsulating adhesive 201 is set around the display area 10, so the shape of each encapsulation part is arc-shaped. The shape of the first reflective structure 301 in the reflective structure group 30 is the same as the shape of the corresponding encapsulation part. When the shape of the encapsulation part is arc-shaped, the shape of the first reflective structure 301 is also arc-shaped. The shape of the second reflective structure 302 in the reflective structure group 30 is the same as the shape of the corresponding encapsulation part. When the shape of the encapsulation part is arc-shaped, the shape of the second reflective structure 302 is also arc-shaped.

[0060] The shapes of the first reflective structure 301 and the second reflective structure 302 in the reflective structure group 30 are adapted to different shapes depending on the shape of the display panel, and are not limited here.

[0061] Based on the above-described embodiments of the invention, referencing Figure 2 As shown, in each reflective structure group 30 corresponding to the encapsulation part, the length of the first reflective structure 301 and the length of the second reflective structure 302 are both less than the length of the encapsulation part; the width of the first reflective structure 301 and the width of the second reflective structure 302 are both less than the width of the encapsulation part. This results in the reflective structure group 30 occupying a smaller area in the display panel, and its placement in the non-display area allows for a narrow bezel.

[0062] In this embodiment of the invention, the first reflective structure 301 and the second reflective structure 302 are disposed opposite to each other on both sides of the encapsulating adhesive 201. The encapsulating adhesive 201 includes a plurality of encapsulation portions connected in sequence, and each encapsulation portion is provided with at least one reflective structure group 30. The extending directions of the first reflective structure 301 and the second reflective structure 302 in the reflective structure group 30 are parallel to the extending directions of the corresponding encapsulation portions, and their shapes are the same as the shapes of the corresponding encapsulation portions. In the reflective structure group 30 corresponding to each encapsulation portion, the length of the first reflective structure 301 and the length of the second reflective structure 302 are both less than the length of the encapsulation portion. For example, in the horizontal direction, if the length of the encapsulation portion is 3 cm, then in the reflective structure group 30 corresponding to the encapsulation portion, the length of the first reflective structure 301 and the length of the second reflective structure 302 are both set to 2 mm. In the reflective structure group 30 corresponding to each encapsulation portion, the width of the first reflective structure 301 and the width of the second reflective structure 302 are both less than the width of the encapsulation portion. For example, if the width of the encapsulation part is 1 cm in the vertical direction, then in the reflective structure group 30 corresponding to the encapsulation part, the width of the first reflective structure 301 and the width of the second reflective structure 302 are both set to 100 micrometers.

[0063] Based on the above-described embodiments of the invention, referencing Figure 2 As shown, the first reflective structure 301 and the second reflective structure 302 are made of different materials.

[0064] In this embodiment of the invention, the materials of the first reflective structure 301 and the second reflective structure 302 are set differently. For example, the first reflective structure 301 and the second reflective structure 302 are made of different metals. When the laser spot irradiates the first reflective structure 301 or the second reflective structure 302, the reflectivity is different due to the different materials of the first reflective structure 301 and the second reflective structure 302. The energy received by the laser sealing machine is different, thereby identifying the position of the light spot.

[0065] Figure 3 This is a cross-sectional structural diagram of a display panel according to an embodiment of the present invention. Figure 3 Can correspond Figure 2 Obtained by cutting along AA', as shown Figure 3As shown, the display panel also includes an array substrate 40 and an encapsulation substrate 50; the array substrate 40 and the encapsulation substrate 50 are connected by an encapsulating adhesive 201; and a reflective structure group 30 is disposed on the array substrate 40.

[0066] In this embodiment of the invention, the array substrate 40 may include a substrate and a driving circuit. A light-emitting device is disposed on the array substrate, and the driving circuit provides a driving signal to the light-emitting device. The materials of the encapsulation substrate 50 and the substrate include, but are not limited to, glass. The array substrate 40 and the encapsulation substrate 50 are connected by an encapsulating adhesive 201. The reflective structure group 30 includes a first reflective structure 301 and a second reflective structure 302, and the first reflective structure 301 and the second reflective structure 302 are disposed on the array substrate 40. The first reflective structure 301 and the second reflective structure 302 are disposed on opposite sides of the encapsulating adhesive 201.

[0067] Figure 4 This is a flowchart of a laser spot adjustment method for a display panel packaging process according to an embodiment of the present invention. This embodiment is applicable to adjusting the laser spot on the display panel during the display panel packaging process. This laser spot adjustment method for the display panel packaging process can be executed by a laser sealing machine, and the laser spot adjustment device for the display panel packaging process can be implemented in hardware and / or software. Figure 4 As shown, the light spot adjustment method in the display panel encapsulation process includes:

[0068] S110. Emit a laser to a designated area of ​​the display panel, the designated area including the encapsulation area.

[0069] Specifically, during the new product introduction phase, after the panel layout drawing is imported into the laser sealing machine, the laser emitting device of the laser sealing machine emits a laser beam towards a designated area according to the imported drawing, so that the laser spot falls within the designated area through the layout drawing. The designated area may include the encapsulation area; in some embodiments, the area of ​​the designated area is larger than the area of ​​the encapsulation area. During the laser sealing sintering process, it is necessary to control the laser spot to move and sinter along the encapsulation adhesive in the encapsulation area.

[0070] S120. Based on the first energy of the laser reflected by the first reflective structure and / or the second energy of the laser reflected by the second reflective structure, adjust the laser spot on the display panel to the encapsulation adhesive in the encapsulation area.

[0071] Specifically, the first energy is the energy of the laser reflected by the first reflective structure. The second energy is the energy of the laser reflected by the second reflective structure. Since the first and second reflective structures have different reflectivities (this can be achieved by using different materials or structures for the first and second reflective structures), the magnitude of the first energy differs from the second energy. The laser sealing machine adjusts the laser spot on the display panel to the encapsulating adhesive in the encapsulation area based on the first energy of the laser reflected by the first reflective structure and / or the second energy of the laser reflected by the second reflective structure. If the laser spot falls on the first or second reflective structure, the laser spot is adjusted to move towards the encapsulating adhesive, and the position is continuously adjusted during the movement until it reaches the location of the encapsulating adhesive. In some optional embodiments of the invention, the laser spot can be adjusted to an optimal position (the middle position of the encapsulating adhesive, where the middle position of the encapsulating adhesive is equidistant from its two opposite edges), allowing the laser spot to move along the middle position of the encapsulating adhesive, achieving higher sintering precision.

[0072] The technical solution of this invention involves a laser sealing machine adjusting the laser spot position on the display panel based on the first energy of the laser reflected by the first reflective structure and / or the second energy of the laser reflected by the second reflective structure. Because the reflectivity of the first and second reflective structures is different, the magnitudes of the first and second energies will be different. When the laser sealing machine receives the first and second energies, it adjusts the laser spot position in different directions, causing the laser spot to move along the encapsulating adhesive. This achieves automatic adjustment of the laser spot position during the new product introduction stage, improving sintering accuracy.

[0073] Figure 5 This is a flowchart of another method for adjusting the light spot during the packaging process of a display panel according to an embodiment of the present invention. This embodiment is a detailed description of the technical features of the above embodiments. Figure 5 As shown, the light spot adjustment method in the display panel encapsulation process includes:

[0074] S210, Emits a laser to a designated area of ​​the display panel, the designated area including the encapsulation area.

[0075] S220. If the first energy is received, control the laser spot on the display panel to move towards the direction of the second reflective structure until the first energy is no longer received, and record the first position of the laser spot on the display panel.

[0076] Specifically, if the first energy is received, it means the laser spot has landed on the first reflective structure. The laser spot on the display panel is then moved towards the second reflective structure until the first energy is no longer received. At this point, the laser spot has moved out of the first reflective structure, and the position of the laser spot on the display panel at this time is recorded as the first position. (Reference) Figure 2The red circle represents the laser spot, and the radius of the laser spot is denoted as r. The first position can be the position where the laser spot is tangent to the first reflective structure. For example, when controlling the laser spot on the display panel to move towards the second reflective structure, the movement is in preset step sizes, such as 10 μm. There are two ways to control the laser spot to continuously move to the first position: one is to move towards the second reflective structure in preset step sizes until the first position is reached; the other is to move towards the second reflective structure in preset step sizes, then move along the extension direction of the encapsulation part closest to the laser spot, and then continue to move towards the second reflective structure in preset step sizes according to the received first energy, and so on in a cyclical manner until the first position is reached.

[0077] S230, control the light spot to continue moving from the first position to the direction of the second reflective structure by a first preset distance.

[0078] Specifically, the first preset distance can be the distance the light spot moves from the first position towards the second reflective structure. The second preset distance is the distance between the side of the first reflective structure closest to the encapsulating adhesive and the side of the second reflective structure closest to the encapsulating adhesive. Figure 2 The second preset distance can be represented by d. The first preset distance is equal to half of the second preset distance and the difference between the light spot radius and the light spot radius. The light spot radius can be represented by r. The light spot is controlled to continue moving from the first position towards the second reflective structure, and the movement is the first preset distance. For example, the distance the light spot continues to move from the first position towards the second reflective structure is d / 2-r.

[0079] S240. If the second energy is received, control the laser spot on the display panel to move towards the direction of the first reflective structure until the second energy is no longer received, and record the second position of the laser spot on the display panel.

[0080] Specifically, if the second energy is received, it means the laser spot has landed on the second reflective structure. The laser spot on the display panel is then moved towards the first reflective structure until the second energy is no longer received. At this point, the laser spot has moved out of the second reflective structure, and the position of the laser spot on the display panel at this time is recorded as the second position. (Reference) Figure 2The red circle represents the laser spot, and its radius is denoted as r. The second position can be the location where the laser spot is tangent to the second reflective structure. For example, when controlling the laser spot on the display panel to move towards the first reflective structure, it moves in preset step sizes, such as 10 μm. There are two ways to control the spot to continuously move to the second position: one is to move towards the first reflective structure in preset step sizes until the second position is reached; the other is to move towards the first reflective structure in preset step sizes, then move along the extension direction of the encapsulation part closest to the spot, and then continue moving towards the first reflective structure in preset step sizes based on the received second energy, repeating this cycle until the second position is reached.

[0081] S250, control the light spot to continue moving from the second position to the direction of the first reflective structure by a first preset distance.

[0082] Specifically, the first preset distance can also be the distance the light spot moves from the second position towards the first reflective structure. The second preset distance is the distance between the side of the first reflective structure closest to the encapsulating adhesive and the side of the second reflective structure closest to the encapsulating adhesive, and can be represented by 'd'. The first preset distance is equal to half of the second preset distance plus the difference between the light spot radius and the light spot radius. The light spot radius can be represented by 'r'. The light spot is controlled to continue moving from the second position towards the first reflective structure by the first preset distance. For example, the distance the light spot moves from the second position towards the first reflective structure is 'd / 2 - r'.

[0083] Figure 6 This is a flowchart of a method for adjusting the light spot during the packaging process of a display panel according to an embodiment of the present invention. Figure 6 As shown, the light spot adjustment method in the display panel encapsulation process includes:

[0084] S310: Emits a laser to a designated area of ​​the display panel, the designated area including the encapsulation area.

[0085] S320. If the first energy and the second energy are not received, control the laser spot on the display panel to move towards the first reflective structure in a preset step size until the first energy is received.

[0086] Specifically, the preset step size is a pre-set distance the laser spot on the display panel moves towards the first reflective structure. If the laser sealing machine does not receive the first energy and the second energy, it means the laser has not landed on the first and second reflective structures. This can be understood as the laser spot landing within the encapsulation adhesive area, but not in the optimal position. Therefore, the laser spot on the display panel is controlled to move towards the first reflective structure by a preset step size, which, for example, can be 10 μm. The laser spot continues to move until the laser sealing machine receives the first energy, indicating that the laser spot has landed on the first reflective structure, and the position of the laser spot at this time is recorded.

[0087] S330: Control the laser spot on the display panel to move a third preset distance toward the second reflective structure.

[0088] The distance between the side of the first reflective structure closest to the encapsulating adhesive and the side of the second reflective structure closest to the encapsulating adhesive is the second preset distance. The third preset distance is equal to half of the second preset distance minus the spot radius, plus a preset step size. For example, if the second preset distance is denoted by 'd', the spot radius by 'r', and the preset step size is 10 μm, then the third preset distance is equal to 'd / 2' - 'r' + 10, or 'd / 2' - '(r-10)'. The third preset distance is the distance the spot moves towards the second reflective structure after it is assumed to have fallen onto the first reflective structure. This distance differs from the distance the spot moves towards the second reflective structure when it is tangent to the first reflective structure by a preset step size. Since tangency between the spot and the first reflective structure is considered the previous state before the spot has fallen onto the first reflective structure, the third preset distance is represented by 'd / 2' - 'r' + 10'.

[0089] For example, if the first energy and the second energy are not received, the laser spot on the display panel is controlled to move towards the first reflective structure at a distance of 10 μm until the first energy is received, and then the laser spot on the display panel is controlled to move towards the second reflective structure at a distance of d / 2-(r-10).

[0090] S340. If the first energy and the second energy are not received, control the laser spot on the display panel to move towards the second reflective structure in a preset step size until the second energy is received.

[0091] Specifically, the preset step size can also be a pre-set distance the laser spot on the display panel moves towards the second reflective structure. If the laser sealing machine does not receive the first energy and the second energy, it means the laser has not landed on the first or second reflective structure. This can be understood as the laser spot landing within the encapsulation adhesive area, but not in the optimal position. Therefore, the laser spot on the display panel can be controlled to move towards the second reflective structure with a preset step size. For example, the preset step size can be 10 μm. The laser spot is controlled to continue moving until the laser sealing machine receives the second energy, indicating that the laser spot has landed on the second reflective structure. The position of the laser spot at this time is recorded.

[0092] S350: Control the laser spot on the display panel to move a third preset distance toward the first reflective structure.

[0093] The distance between the side of the first reflective structure closest to the encapsulating adhesive and the side of the second reflective structure closest to the encapsulating adhesive is the second preset distance. The third preset distance is equal to half of the second preset distance minus the spot radius, plus a preset step size. For example, if the second preset distance is denoted by 'd', the spot radius by 'r', and the preset step size is 10 μm, then the third preset distance is equal to 'd / 2' - 'r' + 10, or 'd / 2' - '(r-10)'. Alternatively, the third preset distance can be the distance the spot moves towards the first reflective structure after it is assumed to have fallen onto the second reflective structure. This distance differs from the distance the spot moves towards the first reflective structure when it is tangent to the second reflective structure by a preset step size. Furthermore, tangency between the spot and the second reflective structure is considered the previous state before the spot has fallen onto the second reflective structure; therefore, the third preset distance is represented by 'd / 2' - 'r' + 10'.

[0094] For example, if the first energy and the second energy are not received, the laser spot on the display panel can be controlled to move towards the second reflective structure by 10 μm until the second energy is received, and then the laser spot on the display panel can be controlled to move towards the first reflective structure by d / 2-(r-10).

[0095] Based on the above-mentioned technical solutions of the invention embodiments, the invention further includes adding a reflective structure detection alarm device to the laser sealing machine. During the mass production of display panel packaging, if the light spot shifts and is projected onto the reflective structure group, and is detected by the laser sealing machine, the laser sealing machine will stop processing and sound an alarm when the laser processing ends at the current panel, reminding the engineer to intervene and investigate the cause.

[0096] The technical solution of this invention monitors and automatically adjusts the position of the laser spot by reflecting laser energy during the sintering process of the laser sealing machine, thereby reducing the error caused by human confirmation of the laser spot and avoiding the laser spot deviation caused by mechanical changes during the production process, thus improving sintering accuracy. Moreover, the control process is simple and easy to implement.

[0097] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0098] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A display panel, characterized in that, include: A display area and a packaging area, wherein the packaging area surrounds the display area; The encapsulation area is provided with encapsulating adhesive; At least one reflective structure group, the reflective structure group including a first reflective structure and a second reflective structure, the first reflective structure being located on the side of the encapsulating adhesive closer to the display area, and the second reflective structure being located on the side of the encapsulating adhesive away from the display area; The first reflective structure and the second reflective structure have different reflectivities.

2. The display panel according to claim 1, characterized in that, In the reflective structure group, the first reflective structure and the second reflective structure are arranged opposite to each other on both sides of the encapsulating adhesive.

3. The display panel according to claim 1, characterized in that, The encapsulating adhesive includes a plurality of encapsulation parts connected in sequence, and each encapsulation part is provided with at least one of the reflective structure groups; The extension direction of the first reflective structure is parallel to the extension direction of the corresponding encapsulation part, and the extension direction of the second reflective structure is parallel to the extension direction of the corresponding encapsulation part.

4. The display panel according to claim 3, characterized in that, The shape of the first reflective structure in the reflective structure group is the same as the shape of the corresponding encapsulation part; The shape of the second reflective structure in the reflective structure group is the same as the shape of the corresponding encapsulation part.

5. The display panel according to claim 3 or 4, characterized in that, In the reflective structure group corresponding to each of the encapsulation portions, the length of the first reflective structure and the length of the second reflective structure are both less than the length of the encapsulation portion; In each of the reflective structure groups corresponding to the encapsulation portion, the width of the first reflective structure and the width of the second reflective structure are both smaller than the width of the encapsulation portion.

6. The display panel according to claim 1, characterized in that, The first reflective structure and the second reflective structure are made of different materials.

7. The display panel according to claim 1, characterized in that, Also includes: Array substrate and packaging substrate; The array substrate and the encapsulation substrate are connected by the encapsulation adhesive; The reflective structure group is disposed on the array substrate.

8. A method for adjusting the light spot during the packaging process of a display panel, characterized in that, Applied to the display panel according to any one of claims 1-7; The method for adjusting the light spot during the display panel encapsulation process includes: A laser is emitted toward a designated area of ​​the display panel, the designated area including an encapsulation area; Based on the first energy of the laser reflected by the first reflective structure and / or the second energy of the laser reflected by the second reflective structure, the laser spot on the display panel is adjusted to the encapsulating adhesive in the encapsulation area.

9. The method for adjusting the light spot during the display panel packaging process according to claim 8, characterized in that, The step of adjusting the laser spot on the display panel to the encapsulating adhesive in the encapsulation area based on the first energy of the laser reflected by the first reflective structure and / or the second energy of the laser reflected by the second reflective structure includes: If the first energy is received, the laser spot on the display panel is controlled to move towards the second reflective structure until the first energy is no longer received, and the first position of the laser spot on the display panel is recorded. The light spot is controlled to continue moving from the first position toward the direction of the second reflective structure by a first preset distance; If the second energy is received, the laser spot on the display panel is controlled to move toward the first reflective structure until the second energy is no longer received, and the second position of the laser spot on the display panel is recorded. The light spot is controlled to continue moving from the second position toward the first reflective structure by a first preset distance; The distance between the side of the first reflective structure closest to the encapsulating adhesive and the side of the second reflective structure closest to the encapsulating adhesive is a second preset distance, and the first preset distance is equal to the difference between half of the second preset distance and the light spot radius.

10. The method for adjusting the light spot during the display panel packaging process according to claim 8, characterized in that, The step of adjusting the laser spot on the display panel to the encapsulating adhesive in the encapsulation area based on the first energy of the laser reflected by the first reflective structure and / or the second energy of the laser reflected by the second reflective structure further includes: If the first energy and the second energy are not received, the laser spot on the display panel is controlled to move toward the first reflective structure by a preset step size until the first energy is received; The laser spot on the display panel is controlled to move a third preset distance toward the second reflective structure; Or, if the first energy and the second energy are not received, the laser spot on the display panel is controlled to move toward the second reflective structure in a preset step size until the second energy is received; The laser spot on the display panel is controlled to move a third preset distance toward the first reflective structure; Wherein, the distance between the side of the first reflective structure near the encapsulating adhesive and the side of the second reflective structure near the encapsulating adhesive is the second preset distance, and the third preset distance is equal to half of the second preset distance minus the light spot radius and then added to the preset step size.

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