CN109786581B - Display panel and preparation method thereof - Google Patents
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Abstract
The invention provides a display panel and a preparation method of the display panel, and relates to the technical field of display. The display panel includes: the detection light-emitting layer and the film packaging layer are positioned on the same side of the substrate layer; the detection light-emitting layer comprises at least one marking group, and the at least one marking group comprises a plurality of light-emitting units which are continuously arranged along a preset direction; the film packaging layer partially covers at least one marking group. According to the embodiment of the invention, the detection light-emitting layer is arranged on the display panel, the deviation condition of the distance between the boundary of the film packaging layer and the boundary of the base material layer and the theoretical distance is accurately determined by detecting the light-emitting condition of the light-emitting unit in the light-emitting layer, and the detection result of the packaging effect of the display panel can be accurately obtained by adopting a simple process.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a preparation method of the display panel.
Background
Nowadays, a film package is used as a main packaging method of a display panel, and since the instability of the position accuracy of the film package is high due to various factors, the boundary of the film package needs to be detected in the production process so as to adjust the position of the film package. However, the current methods for detecting the boundary of the thin film package mainly include two methods: the first method is an online semi-quantitative detection method, which can roughly judge the deviation of the boundary of the film package relative to the target position, but has the problem of low precision of the detection result; the second method is an offline quantitative detection method, which can obtain accurate detection results, but has a problem of damaging products.
Therefore, how to obtain an accurate detection result of the boundary of the thin film package without damaging the display panel is an urgent problem to be solved.
Disclosure of Invention
In view of the above, embodiments of the present invention are directed to provide a display panel and a method for manufacturing the display panel, so as to solve the problem that in the prior art, an accurate detection result of a boundary of a thin film package cannot be obtained without damaging the display panel.
One aspect of the present invention provides a display panel including: the detection light-emitting layer and the film packaging layer are positioned on the same side of the substrate layer; the detection light-emitting layer comprises at least one marking group, and each marking group comprises a plurality of light-emitting units which are continuously arranged along a preset direction; the film packaging layer partially covers at least one marking group.
In one embodiment of the present invention, the orthographic projection areas of the two adjacent light-emitting units on the substrate layer are the same or different, and/or the light-emitting colors of the two adjacent light-emitting units are the same or different.
In an embodiment of the invention, each label group includes a plurality of pixel units, each pixel unit includes at least three sub-pixel units of different colors, and each sub-pixel unit is a light emitting unit.
In an embodiment of the invention, a portion of the at least one label group located within the coverage area of the thin film encapsulation layer includes at least one pixel unit, and a portion located outside the coverage area of the thin film encapsulation layer also includes at least one pixel unit.
In one embodiment of the present invention, the detecting luminescent layer comprises N labeling groups, namely a first labeling group, a second labeling group, …, and an Nth labeling group, wherein the second labeling group is shifted by a first predetermined distance D along a predetermined direction relative to the first labeling group1(ii) a Wherein the third labeled group translates a second preset distance D in the preset direction relative to the first labeled group2(ii) a … … wherein the Nth labeled group is shifted by a preset distance D of N-1 in the preset direction relative to the first labeled groupN-1(ii) a And the first preset distance D1 and the second preset distance D2…, the N-1 preset distance DN-1The size of the light emitting unit along the preset direction is not more than one.
In an embodiment of the present invention, each label group includes a plurality of pixel units, each pixel unit includes at least three sub-pixel units with different colors, and each sub-pixel unit is a light emitting unit; preferably, orthographic projections of the light-emitting units of the same color on the substrate layer are the same in size specification; preferably, the sub-pixel units of different colors in each label group are arranged in the same order.
In one embodiment of the present invention, the display panel further includes an organic light emitting layer including a plurality of film layers, wherein the organic light emitting layer is stacked between the thin film encapsulation layer and the substrate layer, and the detection light emitting layer belongs to one of the organic light emitting layers.
In another aspect, the present invention provides a method for manufacturing a display panel, including: providing a substrate layer; preparing a detection luminescent layer on the substrate layer, wherein the detection luminescent layer comprises at least one marking group, and each marking group comprises a plurality of luminescent units which are continuously arranged along a preset direction; at least one marking group comprises a standard group, and at least one complete light-emitting unit in a plurality of light-emitting units of the standard group is positioned in a theoretical coverage area of the thin film packaging layer; preparing a thin film packaging layer above the detection luminescent layer; and judging the offset distance of the packaging boundary of the thin film packaging layer relative to the theoretical packaging boundary according to the light emitting condition of the light emitting unit positioned in the packaging area of the thin film packaging layer.
In one embodiment of the present invention, the detection luminescent layer includes a plurality of labeling groups; the marking groups comprise a standard group and a comparison group, at least one complete light-emitting unit in the standard group is positioned in a packaging area of the thin film packaging layer, and the comparison group and the standard group are respectively translated to the boundary of the substrate layer by preset distances, wherein the preset distances corresponding to the comparison group are monotonously changed and do not exceed the size of one light-emitting unit along the preset direction; the light emitting color of the light emitting unit of each labeling group is the same color, and the standard group comprises an integral number of light emitting units; each marking group comprises a plurality of pixel units, each pixel unit comprises at least three sub-pixel units with different colors, each sub-pixel unit is a light-emitting unit, at least one complete pixel unit in the standard group is positioned in the packaging area of the thin film packaging layer, and at least one complete pixel unit is positioned outside the packaging area of the thin film packaging layer.
In one embodiment of the present invention, the lighting condition includes: whether the light-emitting units emit light, the condition of light-emitting brightness, the condition of color coordinates and the condition of the number and/or the dimension specification of the light-emitting units.
According to the embodiment of the invention, the detection light-emitting layer is arranged on the display panel, the deviation condition of the distance between the boundary of the film packaging layer and the boundary of the base material layer and the theoretical distance is accurately determined by detecting the light-emitting condition of the light-emitting unit in the light-emitting layer, and the detection result of the packaging effect of the display panel can be accurately obtained by adopting a simple process.
Drawings
Fig. 1 is a schematic configuration diagram of a display panel according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a display panel according to another embodiment of the present invention.
Fig. 3 is a schematic structural view of a detecting light emitting layer according to still another embodiment of the present invention.
Fig. 4 is a schematic structural view of a display panel according to still another embodiment of the present invention.
FIG. 5a is a diagram of a labeled group of sub-pixel units as light-emitting units according to an embodiment of the invention. FIG. 5b is a diagram of a plurality of labeled groups with the light-emitting unit being a sub-pixel unit according to an embodiment of the invention.
Fig. 6 is a schematic flowchart of a method of manufacturing a display panel according to an embodiment of the present invention.
The reference numbers in the above figures are as follows: the light emitting device comprises a thin film packaging layer 1, a first boundary 11, a third boundary 12, a detection light emitting layer 2, a first light emitting unit 21, a second light emitting unit 22, a third light emitting unit 23, a base material layer 3, a second boundary 31, a fourth boundary 32, a direction 4, a pixel unit 5, a first sub-pixel unit 51, a second sub-pixel unit 52 and a third sub-pixel unit 53.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.
Fig. 1 is a schematic configuration diagram of a display panel according to an embodiment of the present invention.
As shown in fig. 1, the display panel may include: the detection light-emitting layer 2 and the film packaging layer 1 are positioned on the same side of the substrate layer 3. The detection light emitting layer 2 may include at least one marking group, each marking group including a plurality of light emitting cells arranged in series in a predetermined direction. In a specific embodiment, the preset direction is illustrated as a direction 4 perpendicular to the boundary of the substrate layer 3 and toward the boundary of the film encapsulation layer 1, which is not limited. The thin film encapsulation layer 1 partially covers at least one marking group. For example, the orthographic projection of the film encapsulation layer 1 on the base material layer 3 partially covers the orthographic projection of the plurality of light emitting cells on the base material layer 3.
Specifically, the display screen of the display panel may include a film encapsulation layer 1, a detection light emitting layer 2, and a base material layer 3, which are stacked. Here, the film encapsulation layer 1 and the detection light emitting layer 2 may be in direct contact, and of course, in the case of not affecting the light emitting image for distinguishing the detection light emitting layer 2, the detection light emitting layer 2 and the substrate layer 3 may also have other functional layers disposed therebetween, that is, the vapor deposition of the detection light emitting layer 2 may be performed at any process stage before the film encapsulation, and the positional relationship between the film encapsulation layer 1 and the detection light emitting layer 2 is not limited herein. For example, the detection light emitting layer 2 may be evaporated together at the time of AA area (pixel display area) evaporation, that is, the detection light emitting layer 2 may be one layer of the pixel display area. Similarly, the detection light-emitting layer 2 and the substrate layer 3 may be in direct contact, or other functional layers may be further disposed therebetween, and the positional relationship between the detection light-emitting layer 2 and the substrate layer 3 is not limited here.
The detection luminescent layer 2 may be a film layer that absorbs energy under excitation conditions and converts the energy into optical radiation. Here, the detection light emitting layer 2 may be composed of a light emitting material. Specifically, the light emitting material may be an inorganic light emitting material, for example, a sulfide of an alkaline earth metal or the like; the light-emitting material may be an organic light-emitting material, for example, oxadiazole and its derivatives, triazole and its derivatives, and the like, and the specific type of the light-emitting material is not limited herein. In order to ensure the flexibility of the display panel, the light emitting material may preferably be an organic light emitting material, so that the detection light emitting layer 2 may disperse a part of the stress of the display panel when it is bent. The conditions for exciting and detecting the luminescence of the luminescent layer 2 may be light, high-energy particles, external electric field, etc., and the specific excitation conditions are not limited herein.
Specifically, since the detection light-emitting layer 2 can be used for detecting the deviation of the first boundary 11 of the thin-film encapsulation layer 1 from the theoretical encapsulation boundary, the detection light-emitting layer 2 and the thin-film encapsulation layer 1 can have an overlapping region and a non-overlapping region, i.e., the thin-film encapsulation layer 1 can partially cover the detection light-emitting layer 2. In other words, it may be that the orthographic projection of the film encapsulation layer 1 on the substrate layer 3 partially covers the orthographic projection of the plurality of light-emitting units of the marking group on the substrate layer 3, wherein the overlapped area may be shown as area D in fig. 1, and the non-overlapped area may be shown as area C in fig. 1. Further, when the detection luminescent layer 2 is excited to emit light for imaging under a preset excitation condition, a user can observe that the light emission intensity of the detection luminescent layer 2 in the region C is different from the light emission intensity of the detection luminescent layer 2 in the region D, and then the user can determine the position of the first boundary 11 of the thin film encapsulation layer 1 and also determine the overlapping position of the first boundary 11 and the label group in the detection luminescent layer 2.
Specifically, the area not encapsulated by the thin film encapsulation layer 1 may contact water oxygen to cause failure, so that the area not encapsulated by the thin film encapsulation layer 1 has low light emission luminance.
The type of the base material layer 3 may be a glass base material, a flexible base material, or the like, and the type of the base material layer 3 is not particularly limited.
It should be understood that the plurality of light emitting units of the tag group are arranged in contact with each other, i.e., the tag group is composed of a plurality of light emitting units arranged in series along a predetermined direction.
Besides, it should be understood that the light emitting colors of the plurality of light emitting units may be the same color or at least three different colors. Further, when the plurality of light emitting cells are composed of light emitting cells of at least three light emitting colors, the arrangement of the light emitting cells is regular, and the light emitting cells of different colors are arranged in the same order, such as rgbrgb …. Here, when the light emitting colors of the plurality of light emitting units of the labeling group are the same color, the region not encapsulated by the thin film encapsulation layer 1 may contact with water and oxygen, thereby causing failure, so that the region not encapsulated by the thin film encapsulation layer 1 has low light emitting luminance, and the position of the encapsulation boundary can be distinguished according to the difference of the light emitting luminance of the plurality of light emitting units; when the light emitting colors of the plurality of light emitting units of the labeling group are at least three colors, the packaging boundary can be judged according to the number and the size specification of the light emitting units in the packaging area.
For convenience of description, the adjacent two light emitting units may be referred to as a first light emitting unit 21 and a second light emitting unit 22, respectively. Here, the first light emitting unit 21 and the second light emitting unit 22 may use different light emitting materials, so that the light emitting colors of the first light emitting unit 21 and the second light emitting unit 22 may be different; the same light emitting material may be used so that the first light emitting unit 21 and the second light emitting unit 22 emit the same color of light. Regarding the shape and the size specification of the first light emitting unit 21 and the second light emitting unit 22, the first light emitting unit 21 and the second light emitting unit 22 may have the same shape, for example, both may be circular or rectangular, etc.; the first light emitting unit 21 and the second light emitting unit 22 may also have different shapes, for example, one is a circle and the other is a rectangle, and the shapes of the first light emitting unit 21 and the second light emitting unit 22 are not limited herein. When the first light-emitting unit 21 and the second light-emitting unit 22 have the same shape, the first light-emitting unit 21 and the second light-emitting unit 22 may have the same or different size rules, and this is not limited herein.
It should be understood that the accuracy of the spacing between the first boundary 11 and the second boundary 31 is related to the dimension specification of the light emitting units of the annotation group, and the accuracy of the spacing between the first boundary 11 and the second boundary 31 is higher when the light emitting units are smaller in size.
According to the embodiment of the invention, the detection light-emitting layer 2 is arranged on the display panel, the deviation condition of the distance between the boundary of the film packaging layer and the boundary of the base material layer and the theoretical distance is accurately determined by detecting the light-emitting condition of the light-emitting unit in the light-emitting layer 2, and the detection result of the packaging effect of the display panel can be accurately obtained by adopting a simple process.
Fig. 2 is a schematic structural view of a display panel according to another embodiment of the present invention.
In another embodiment of the present invention, the plurality of light emitting cells include three emission colors under the preset excitation condition.
As shown in fig. 2, the types of the light emitting units of the labeled group may include three types, i.e., a first light emitting unit 21, a second light emitting unit 22, and a third light emitting unit 23, which are regularly arranged and alternately arranged with each other along a direction 4 perpendicular to the second boundary 31, and further, the first light emitting unit 21, the second light emitting unit 22, and the third light emitting unit 23 emit light of different colors under a preset excitation condition. Specifically, the method for determining the distance between the first boundary 11 and the second boundary 31 of the three light-emitting units is the same as the principle of the determination method of the embodiment of fig. 1, and is not repeated here to avoid redundancy.
In addition, detailed features and functions of the third light emitting unit 23 can be described with reference to the above-mentioned embodiment of fig. 1 regarding the first light emitting unit 21 and the second light emitting unit 22, and are not repeated herein in order to avoid redundancy.
FIG. 5a is a diagram of a labeled group of sub-pixel units as light-emitting units according to an embodiment of the invention. FIG. 5b is a diagram of a plurality of labeled groups with the light-emitting unit being a sub-pixel unit according to an embodiment of the invention.
Similarly, in another embodiment of the present invention, as shown in fig. 5, each label group may include a plurality of pixel units 5, and each pixel unit 5 may include at least three sub-pixel units of different colors, for example, a first sub-pixel unit 51, a second sub-pixel unit 52, and a third sub-pixel unit 53, each of which is a light emitting unit.
Specifically, in an embodiment of the present invention, as shown in fig. 5a, a portion of at least one label group located inside a coverage area of the thin film encapsulation layer 1 includes at least one pixel unit 5, and a portion located outside the coverage area of the thin film encapsulation layer 1 also includes at least one pixel unit 5.
According to the embodiment of the invention, the detection light-emitting layer is arranged on the display panel, the deviation condition of the distance between the boundary of the film packaging layer and the boundary of the base material layer and the theoretical distance is accurately determined by detecting the light-emitting condition of the light-emitting unit in the light-emitting layer, and the detection result of the packaging effect of the display panel can be accurately obtained by adopting a simple process.
In one embodiment of the present invention, the detecting luminescent layer 2 comprises N labeling groups, namely a first labeling group, a second labeling group, …, and an Nth labeling group, wherein the second labeling group is shifted by a first predetermined distance D along a predetermined direction relative to the first labeling group1(ii) a Wherein the third labeled group translates a second preset distance D in the preset direction relative to the first labeled group2(ii) a … … wherein the Nth labeled group is shifted by a preset distance D of N-1 in the preset direction relative to the first labeled groupN-1(ii) a And the first preset distance D1 and the second preset distance D2…, the N-1 preset distance DN-1The size of the light emitting unit along the preset direction is not more than one.
Specifically, as shown in fig. 5b, each label group includes a plurality of pixel units 5, each pixel unit 5 includes at least three sub-pixel units of different colors, for example, a first sub-pixel unit 51, a second sub-pixel unit 52, and a third sub-pixel unit 53, and each sub-pixel unit is a light emitting unit. Preferably, the orthographic projections of the light-emitting units of the same color on the substrate layer 3 are of the same size specification. Preferably, the sub-pixel units of different colors in each label group are arranged in the same order. When the labeling groups comprise the light-emitting units with various colors, the orthographic projections of the light-emitting units on the substrate layer are preferably limited to be identical in size and specification and/or the sub-pixel units with different colors in each labeling group are arranged according to the same sequence, so that the comparison of the light-emitting conditions of different labeling groups is facilitated, and the packaging offset result is judged according to the comparison result.
When the boundary of the thin film encapsulation layer 1 is specifically detected, the steps may include: acquiring an image of the detection luminescent layer 2 under a preset excitation condition; determining which boundary of two adjacent light-emitting units in a plurality of labeling groups coincides with the first boundary 11 of the thin film packaging layer 1 according to the imaging, wherein the labeling groups can be called as overlapping labeling groups; determining the number of complete light-emitting units between the second boundary 31 of the substrate layer 3 and the first boundary 11 of the film packaging layer 1 according to the overlapping label group, wherein the complete light-emitting unit refers to a whole light-emitting unit; and determining the distance between the second boundary 31 of the substrate layer 3 and the first boundary 11 of the film packaging layer 1 according to the number of the complete light-emitting units and the size specification of the plurality of light-emitting units.
For clarity of description, the following describes a case where the detection light emitting layer 2 includes a plurality of label groups by a specific example.
In another embodiment of the present invention, as shown in fig. 3, the number of the plurality of marking groups is three, which are respectively the first marking group, the second marking group and the third marking group, and each light emitting unit is a square with the same dimension and specification; the second marking group translates the side length of a half square towards the boundary of the substrate layer 3 relative to the first marking group; the third labeling group is shifted to the boundary of the substrate layer 3 by one third of the side length of the square relative to the first labeling group.
Specifically, as shown in fig. 3, each of the label groups includes a plurality of first, second, and third light emitting units 21, 22, and 23 different in color. The three different color light emitting cells may correspond to different sub-pixel cells, i.e. as shown in fig. 5 b. The light-emitting unit is square, and the size specification is a x a. When the first boundary 11 coincides with the boundary of the adjacent light emitting cells in the first labeled group, as shown by the position 111 in fig. 3, the position where the first boundary 11 is located may be referred to as a theoretical encapsulation boundary, and the distance between the theoretical encapsulation boundary and the second boundary 31 may be referred to as a theoretical distance. In order to determine a specific value of the theoretical pitch, the theoretical pitch may be 8a as shown in fig. 3, and may be determined according to the total number of the first light emitting cells 21, the second light emitting cells 22, and the third light emitting cells 23 between the first boundary 11 and the second boundary 31 and the size a of the light emitting cells. When the first boundary 11 coincides with the boundary of the adjacent light emitting cells in the second labeled group, as shown by the 112 position in fig. 3, it can be determined that the first boundary 112 position is shifted by (1/2) × a in the above-mentioned direction 4 with respect to the theoretical encapsulation boundary 111, and at this time, the spacing between the first boundary 112 and the second boundary 31 is the sum of 8a and (1/2) × a, i.e., 8.5 a. When the first boundary 11 coincides with the boundary of the light emitting cells in the third labeled group, as shown by the position 113 in fig. 3, it can be determined that the position of the first boundary 113 is shifted by (2/3) × a in the above-mentioned direction 4 with respect to the theoretical package boundary 111, and at this time, the interval between the first boundary 113 and the second boundary 31 is the sum of 8a and (2/3) × a.
It should be understood that, in order to determine the more precise spacing between the first boundary 11 and the second boundary 31, there may be more than two label sets, for example, a fourth label set, shifted by (1/4) × a relative to the first label set in the direction of the second boundary 31; the fifth labeled group is shifted (1/5). a, etc. in the direction of the second boundary 31 relative to the first labeled group.
By providing sets of labels shifted by a predetermined distance, a more accurate determination of the separation between the first boundary 11 and the second boundary 31 is achieved, e.g., specifically to (1/2 a), (2/3 a), etc., rather than the prior art estimation.
In another embodiment of the present invention, the display panel further includes an organic light emitting layer including a plurality of film layers, wherein the organic light emitting layer is stacked between the thin film encapsulation layer 1 and the substrate layer 3, and the detection light emitting layer 2 belongs to one of the organic light emitting layers. Specifically, for ease of evaporation, the detection light-emitting layer 2 may be evaporated together at the time of AA-area (pixel display area) evaporation, that is, the detection light-emitting layer 2 may be one layer of the pixel display area. Here, the pixel display region may include a display driving layer and an organic light emitting layer, and further, the detection light emitting layer 2 may be formed on the organic light emitting layer.
In another embodiment of the present invention, the dimensional specifications of each light emitting unit are the same. Specifically, the light emitting unit may have a square shape. In order to facilitate the production of the vapor deposition mask for detecting the light-emitting layer 2, the dimensions of each light-emitting unit may preferably be the same in order to confirm the simple and quick spacing between the first boundary 11 and the second boundary 31.
In another embodiment of the present invention, in order to facilitate observation of the image of the detection luminescent layer 2, it may be preferable to observe the image of the detection luminescent layer 2 using a fluorescence mode of an optical microscope, and accordingly, a light source of the fluorescence mode of the optical microscope is ultraviolet rays.
In another embodiment of the present invention, the detection light-emitting layer 2 is composed of an organic light-emitting material.
Specifically, in order to ensure flexibility of the display panel, the light emitting material may preferably be an organic light emitting material, and the detection light emitting layer 2 may disperse stress when the display panel is bent.
Fig. 4 is a schematic structural view of a display panel according to still another embodiment of the present invention.
In another embodiment of the present invention, as shown in fig. 4, the display screen of the display panel may be rectangular, and accordingly, the substrate layer 3 and the film encapsulation layer 1 may be rectangular, and in this case, the boundaries of the film encapsulation layer 1 may be divided into two types perpendicular to each other, for convenience of description, the two types of boundaries of the film encapsulation layer 1 may be referred to as a first boundary 11 and a third boundary 12, respectively, and similarly, the two types of boundaries of the substrate layer 3 may be referred to as a second boundary 31 and a fourth boundary 32, respectively. Here, the detection light emitting layer 2 may be used to detect a spacing between the first boundary 11 and the second boundary 31, and may also be used to detect a spacing between the third boundary 12 and the fourth boundary 32.
Accordingly, the labeled group for detecting the light emitting layer 2 may be classified into two types, one in which a plurality of light emitting cells are arranged perpendicular to the second boundary 31 and one in which a plurality of light emitting cells are arranged perpendicular to the fourth boundary 32. Here, the structure of the label group may be any one of the structures in the foregoing embodiments, and the structure type of the label group is not limited herein.
In addition, the two types of labeled groups of the detecting light emitting layer 2 may be simultaneously deposited, i.e. on the same layer of the detecting light emitting layer 2, or separately deposited, i.e. on different layers of the detecting light emitting layer 2. In order to save evaporation time, it may be preferable to be located in the same layer.
The display panel according to the embodiment of the present invention is described above, and the method of detecting the boundary of the thin film encapsulation layer 1 according to the embodiment of the present invention is described below with reference to fig. 6.
A method for manufacturing a display panel according to an embodiment of the present invention is described below with reference to fig. 6.
Fig. 6 is a schematic flowchart of a method of manufacturing a display panel according to an embodiment of the present invention.
As shown in fig. 6, the method for manufacturing the display panel includes:
step 610: providing a substrate layer.
Step 620: and preparing a detection luminescent layer on the substrate layer.
Specifically, the detection light-emitting layer comprises at least one marking group, and each marking group comprises a plurality of light-emitting units which are continuously arranged along a preset direction. At least one of the labeling groups comprises a standard group, and at least one complete light-emitting unit in the plurality of light-emitting units of the standard group is positioned in the theoretical coverage area of the thin film packaging layer.
Step 630: and preparing a thin film packaging layer above the detection luminescent layer.
Step 640: and judging the offset distance of the packaging boundary of the thin film packaging layer relative to the theoretical packaging boundary according to the light emitting condition of the light emitting unit positioned in the packaging area of the thin film packaging layer.
According to the embodiment of the invention, the detection light-emitting layer is arranged on the display panel, the deviation condition of the distance between the boundary of the film packaging layer and the boundary of the base material layer and the theoretical distance is accurately determined by detecting the light-emitting condition of the light-emitting unit in the light-emitting layer, and the detection result of the packaging effect of the display panel can be accurately obtained by adopting a simple process.
In one embodiment of the present invention, the detection luminescent layer includes a plurality of labeling groups; the marking groups comprise a standard group and a comparison group, at least one complete light-emitting unit in the standard group is positioned in a packaging area of the thin film packaging layer, and the comparison group and the standard group are respectively translated to the boundary of the substrate layer by preset distances, wherein the preset distances corresponding to the comparison group are monotonously changed and do not exceed the size of one light-emitting unit along the preset direction; the light emitting color of the light emitting unit of each labeling group is the same color, and the standard group comprises an integral number of light emitting units; each labeling group includes a plurality of pixel units 5, as shown in fig. 5b, each pixel unit 5 includes at least three sub-pixel units with different colors, each sub-pixel unit is a light emitting unit, at least one complete pixel unit in the standard group is located inside the encapsulation area of the thin film encapsulation layer, and at least one complete pixel unit is located outside the encapsulation area of the thin film encapsulation layer.
In one embodiment of the present invention, the lighting condition includes: whether the light-emitting units emit light, the condition of light-emitting brightness, the condition of color coordinates and the condition of the number and/or the dimension specification of the light-emitting units.
For the technical details of the preparation method of the display panel, reference may be made to the embodiments of the display panel and the embodiments of the method for detecting the boundary of the thin film encapsulation layer, and details are not repeated here to avoid repetition.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and the like that are within the spirit and principle of the present invention are included in the present invention.
Claims (10)
1. A display panel, comprising: the detection light-emitting layer and the film packaging layer are positioned on the same side of the substrate layer;
the detection light-emitting layer comprises at least one marking group, each marking group comprises a plurality of light-emitting units which are continuously arranged along a preset direction, the preset direction is perpendicular to the boundary of the substrate layer, and the thin film packaging layer partially covers the at least one marking group;
the material of the detection luminescent layer is luminescent material, each marking group comprises a plurality of pixel units, each pixel unit comprises at least three sub-pixel units with different colors, and each sub-pixel unit is a luminescent unit;
the detection light-emitting layer is used for judging the offset distance of the packaging boundary of the thin film packaging layer relative to the theoretical packaging boundary, and the material for exciting the detection light-emitting layer to emit light is light or high-energy particles.
2. The display panel according to claim 1, wherein the orthographic projection areas of two adjacent light-emitting units on the substrate layer are the same or different, and/or the light-emitting colors of two adjacent light-emitting units are different.
3. The display panel of claim 1, wherein at least one of the label groups comprises at least one of the pixel units in a portion of the thin film encapsulation layer that is within the footprint of the thin film encapsulation layer, and comprises at least one of the pixel units in a portion of the thin film encapsulation layer that is outside the footprint of the thin film encapsulation layer.
4. The display panel of claim 1, wherein the detection luminescent layer comprises N of the label groups, namely a first label group, a second label group, …, and an Nth label group,
wherein the second labeled group is translated by a first preset distance D along the preset direction relative to the first labeled group1；
Wherein the third labeled group is translated by a second preset distance D along the preset direction relative to the first labeled group2；
……
Wherein the Nth labeled group translates along the preset direction by a preset distance D of N-1 relative to the first labeled groupN-1；
And the first preset distance D1 and the second preset distance D2…, the N-1 preset distance DN-1The size of the light emitting unit along the preset direction is not more than one.
5. The display panel according to claim 1, wherein orthographic projections of the light-emitting units of the same color on the substrate layer are of the same size.
6. The display panel of claim 1, wherein the sub-pixel units of different colors in each of the label groups are arranged in the same order.
7. The display panel according to any one of claims 1 to 6, further comprising an organic light emitting layer including a plurality of film layers, wherein the organic light emitting layer is laminated between the thin film encapsulation layer and the substrate layer, and the detection light emitting layer belongs to one of the organic light emitting layers.
8. A method for manufacturing a display panel, comprising:
providing a substrate layer;
preparing a detection light-emitting layer on the substrate layer, wherein the detection light-emitting layer comprises at least one labeling group, each labeling group comprises a plurality of light-emitting units which are continuously arranged along a preset direction, the preset direction is perpendicular to the boundary of the substrate layer, the at least one labeling group comprises a standard group, at least one complete light-emitting unit in the plurality of light-emitting units of the standard group is positioned in a theoretical coverage area of the film packaging layer, the detection light-emitting layer is made of a light-emitting material, each labeling group comprises a plurality of pixel units, each pixel unit comprises at least three sub-pixel units with different colors, and each sub-pixel unit is one light-emitting unit;
preparing the thin film packaging layer above the detection light-emitting layer;
judging the offset distance of the packaging boundary of the thin film packaging layer relative to the theoretical packaging boundary according to the light emitting condition of the light emitting unit positioned in the packaging area of the thin film packaging layer;
wherein, the material for exciting and detecting the luminescence of the luminescent layer is light or high-energy particles.
9. The production method according to claim 8, wherein the detection luminescent layer includes a plurality of the marking groups; the marking groups comprise the standard group and a comparison group, at least one complete light-emitting unit in the standard group is positioned in a packaging area of the film packaging layer, and the comparison group and the standard group respectively translate a preset distance to the boundary of the substrate layer, wherein the preset distance corresponding to the comparison group changes monotonously and does not exceed the size of one light-emitting unit along the preset direction;
the light emitting color of the light emitting unit of each labeling group is the same color, and the standard group comprises an integral number of the light emitting units;
each marking group comprises a plurality of pixel units, each pixel unit comprises at least three sub-pixel units with different colors, each sub-pixel unit is a light-emitting unit, at least one complete pixel unit in the standard group is positioned in the packaging area of the thin film packaging layer, and at least one complete pixel unit is positioned outside the packaging area of the thin film packaging layer.
10. The method according to claim 8, wherein the luminescence state includes: whether the light-emitting units emit light, the condition of light-emitting brightness, the condition of color coordinates and the condition of the number and/or the dimension specification of the light-emitting units.
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