Display module, preparation method thereof and display device

Abstract

The invention discloses a display module, a preparation method thereof and a display device. The display module comprises a substrate, a first electrode layer, an insulation group, a light emitting part and a second electrode layer, and the first electrode layer is arranged on the surface of the substrate; the insulation group comprises a first wall plate and a second wall plate which are arranged at an interval, and a positioning space is formed between the first wall plate and the second wall plate; the light emitting part is arranged in the positioning space; the second electrode layer is arranged in the positioning space and located on the surface of the light emitting part. According to the technical scheme, the manufacturing precision can be improved.

Description

Technical Field

[0001] The present application belongs to the field of display technology, and specifically relates to a display module and a preparation method thereof, and a display device. Background Art

[0002] For passive matrix displays, it is usually necessary to use a cross-arrangement of strip anodes and strip cathodes. In the process of making display modules, a blocking mask method is usually used, that is, the blocking mask is first placed on the surface of the substrate, and then the required film layer is deposited by evaporation. However, due to the setting of the inverted trapezoidal isolation column, during the evaporation process, winding is prone to occur at the bottom of the isolation column, that is, the film layer at the end of the isolation column close to the substrate is unevenly distributed, and faults are prone to occur, and the deposited film layer has poor accuracy. Summary of the invention

[0003] The purpose of the present application is to provide a display module that can effectively improve the deposition accuracy of a film layer.

[0004] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0005] According to one aspect of an embodiment of the present application, the present application provides a display module, the display module comprising:

[0006] substrate;

[0007] A first electrode layer, wherein the first electrode layer is disposed on a surface of the substrate;

[0008] An insulation group, the insulation group comprising a first wall plate and a second wall plate arranged at intervals, a positioning space being formed between the first wall plate and the second wall plate;

[0009] A light emitting portion, wherein the light emitting portion is disposed in the positioning space;

[0010] The second electrode layer is disposed in the positioning space and located on the surface of the light emitting portion.

[0011] In one aspect, the display module further includes a buffer layer, which is disposed on a surface of the first electrode layer and between two adjacent insulation groups.

[0012] In one aspect, the insulating group is made of a transparent material, and the buffer layer is made of the same material as the insulating group.

[0013] In one aspect, the buffer layer is connected to the insulation group, or the buffer layer is spaced apart from the insulation group.

[0014] In one aspect, the first electrode layer includes a plurality of first electrode strips arranged in parallel, the first electrode strips include a conductive sheet and a connecting electrode, a plurality of the conductive sheets are provided, and the plurality of the conductive sheets are arranged at intervals along the same direction, the substrate forms a sinking area between adjacent conductive sheets, the connecting electrode is arranged in the sinking area, and connects two adjacent conductive sheets.

[0015] In one aspect, the connecting electrode is at least partially curved and extends.

[0016] In one aspect, a hollow area is formed between two adjacent insulation groups, and the display module includes a driving line, and the driving line is arranged in the hollow area.

[0017] In one aspect, the display module also includes a packaging layer and a sensing line, the packaging layer is arranged on the surface of the second electrode layer, the sensing line is arranged on the surface of the packaging layer, the sensing line is orthogonal to the extension direction of the driving line, and the position where the driving line and the sensing line are facing each other forms a touch capacitor.

[0018] In addition, in order to solve the above problems, the present application also provides a method for preparing a display module, the method for preparing a display module comprising:

[0019] forming a first electrode layer on a surface of the substrate;

[0020] A positioning component is formed on the surface of the first electrode layer, the positioning component includes an insulating group and two isolation columns, the two isolation columns are respectively located on opposite sides of the insulating group, the insulating group includes a first wall plate and a second wall plate arranged at intervals, the upper end of the isolation column extends to the top of the insulating group, wherein the first wall plate and the second wall plate have inner wall surfaces arranged oppositely, the inner wall surface of the first wall plate is flush with the side edge of the adjacent isolation column, and the inner wall surface of the second wall plate is flush with the side edge of the adjacent isolation column;

[0021] forming a light emitting material layer, wherein the light emitting material layer is divided into a light emitting portion and a first removal layer under the shielding effect of the isolation column, the light emitting portion is located between the first wall plate and the second wall plate, and the first removal layer is located at the top of the isolation column;

[0022] A conductive layer is formed on the light emitting material layer, and the conductive layer is divided into a second electrode layer and a second removal layer under the shielding effect of the isolation column, wherein the second electrode layer is located between the first wall plate and the second wall plate, and the second removal layer is located on the top of the first removal layer;

[0023] The isolation column is peeled off, and the first removal layer and the second removal layer are removed.

[0024] In addition, in order to solve the above problems, the present application also provides a display device, which includes a method for preparing a display module as described above, wherein the first electrode layer is an anode, the second electrode layer is a cathode, and the side wall surface of the isolation column is spaced apart from the insulation group.

[0025] In the present application, by setting the insulating group, when processing the light emitting portion, the light emitting portion can be formed between the first wall plate and the second wall plate. That is to say, the formation position of the light emitting portion is limited between the first wall plate and the second wall plate, and the formation position of the light emitting portion is made more accurate by positioning the space, thereby improving the setting accuracy of the light emitting portion.

[0026] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 The structural diagram of the display module in the related technology of the present application is schematically shown.

[0029] Figure 2 The schematic diagram shows the process steps of the method for preparing the display module of the present application.

[0030] Figure 3 The schematic diagram shows the process steps of setting a buffer layer in the method for preparing the display module of the present application.

[0031] Figure 4 The figure schematically shows the process steps of setting the first electrode strips in the method for preparing the display module of the present application.

[0032] Figure 5 The schematic diagram shows the process steps of setting the driving line in the method for preparing the display module of the present application.

[0033] Figure 6 The figure schematically shows the process steps of setting the touch capacitor in the method for preparing the display module of the present application.

[0034] Figure 7 The schematic diagram shows the process steps of setting the isolation column in the method for preparing the display module of the present application.

[0035] Figure 8The schematic diagram shows the structure of the first electrode strip arranged on the substrate in the present application.

[0036] Fig. 9 The schematic diagram of the structure of arranging isolation columns and insulation groups on the first electrode strips in the present application is shown schematically.

[0037] Fig.10 The three-dimensional structure of the isolation column arranged on the first electrode strip in the present application is schematically shown.

[0038] Fig.11 The present application is schematically shown in Fig. 9 Schematic diagram of the structure of the light-emitting part and the second electrode strip.

[0039] Fig.12 The structural diagram of the display module in the present application is schematically shown.

[0040] Fig.13 The present application schematically shows Fig.12 Schematic diagram of the three-dimensional structure.

[0041] Fig.14 The present application schematically shows Fig.11 Schematic diagram of the structure in which a buffer layer is set.

[0042] Fig.15 The schematic diagram of the structure of the touch capacitor in the present application is shown schematically.

[0043] Fig.16 The schematic diagram of the structure of the conductive sheet and the connecting electrode in the present application is shown schematically.

[0044] Fig.17 The present application is schematically shown Fig.16 A schematic diagram of the structure of the insulation group is shown in FIG.

[0045] Fig.18 The application is schematically shown Fig.16 Schematic diagram of the cross-section structure in.

[0046] Fig.19 The top view of the structure of the display module in the display device of the present application is schematically shown.

[0047] The following are the descriptions of the reference numerals:

[0048] 100, substrate; 200, first electrode layer; 210, first electrode strip; 300, insulation group; 400, isolation column; 500, light output portion; 501, first removal layer; 600, second electrode layer; 610, second electrode strip; 601, second removal layer; 700, buffer layer; 810, driving line; 820, sensing line; 830, encapsulation layer; 910, substrate; 920, isolation structure; 930, film layer; 940, deposition direction;

[0049] 211, conductive sheet; 212, connecting electrode; 301, positioning space; 310, first wall panel; 320, second wall panel. DETAILED DESCRIPTION

[0050] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

[0051] For further elaboration of the related issues, see the related art Figure 1 As shown, an isolation structure 920 is arranged on a substrate 910. The isolation structure 920 is an inverted trapezoidal structure. The isolation structure 920 is wide at the top and narrow at the bottom. During the deposition of the film layer 930, diffraction will occur at a position where the isolation structure 920 is close to the substrate 910. According to the deposition direction 940 as shown in the figure, the position where some materials are deposited will enter the projection range of the isolation structure 920 on the substrate 910. The deposition range and thickness are difficult to control, resulting in uneven thickness of the film layer 930, which seriously affects the manufacturing accuracy.

[0052] For this purpose, see Figure 2 , Figures 8 to 13 As shown, the present application provides a method for preparing a display module. In this embodiment, the display module mainly refers to a structural device in a passive matrix display. A passive matrix display relies on applying voltage to pixels at the intersection of electrodes in the upper and lower substrates to complete display driving. The passive matrix display in the present application can be a PMOLED (Passive matrix Organic Light-Emitting Diode) or a PMLCD (Passive matrix Liquid Crystal Display).

[0053] The method for preparing a display module comprises:

[0054] Step S10, forming a first electrode layer 200 on the surface of the substrate 100; Figure 8As shown, the substrate 100 can be a glass plate or a plastic plate, and the substrate 100 is mainly used for supporting and protecting. A first electrode layer 200 can be deposited on the upper surface of the substrate 100, and then the first electrode layer 200 is etched to form the first electrode strips 210. The first electrode strips 210 can also be formed directly by coating deposition using a mask. Multiple first electrode strips 210 are spaced apart from each other, and the first electrode strips 210 are parallel to each other.

[0055] In step S20, a positioning component is formed on the surface of the first electrode layer 200, wherein the positioning component includes an insulating group 300 and two isolation columns 400, wherein the two isolation columns 400 are respectively located on opposite sides of the insulating group 300, and the insulating group 300 includes a first wall plate 310 and a second wall plate 320 that are spaced apart from each other, wherein the upper ends of the isolation columns 400 extend to the top of the insulating group 300, wherein the first wall plate 310 and the second wall plate 320 have inner wall surfaces that are relatively disposed, wherein the inner wall surface of the first wall plate 310 is flush with the side edge of the adjacent isolation column 400, and the inner wall surface of the second wall plate 320 is flush with the side edge of the adjacent isolation column 400.

[0056] Specifically, combined Fig. 9 and Fig.10 As shown, it can be understood that the insulating group 300 can also be in the shape of a long strip, and the extension direction of the insulating group 300 is at a certain angle to the extension direction of the first electrode strip 210, for example, the extension direction of the first electrode strip 210 is orthogonal to the extension direction of the insulating group 300. The insulating group 300 is arranged above the first conductive layer, that is, arranged above the first electrode strip 210, and a narrow space is formed between the first wall plate 310 and the second wall plate 320 by setting the first wall plate 310 and the second wall plate 320, and the narrow space between the first wall plate 310 and the second wall plate 320 can be fully utilized to set the light emitting portion 500. In other words, the first wall plate 310 and the second wall plate 320 have a certain function of limiting the position of the light emitting portion 500, that is, the light emitting portion 500 is formed between the first wall plate 310 and the second wall plate 320, thereby improving the setting accuracy of the light emitting portion 500.

[0057] The insulating group 300 can be provided by film deposition, firstly making deposition marks on the first electrode strips 210, and depositing the film by masking, thereby forming the insulating group 300. More specifically, a high-precision machine can be used to install a mask mold according to the deposition marks made in advance, thereby reducing the situation where the precision becomes low during the film deposition.

[0058] The upper end of the isolation column 400 is higher than the height of the insulation group 300. The isolation column 400 can block the position space between adjacent insulation groups 300, and avoid the deposition of film layers at positions other than between the first wall plate 310 and the second wall plate 320. The first wall plate 310 and the second wall plate 320 are located within the orthographic projection range of the isolation column 400 on the substrate 100. Moreover, since the inner wall surface of the first wall plate 310 is flush with the side edge of the adjacent isolation column 400, and the inner wall surface of the second wall plate 320 is flush with the side edge of the adjacent isolation column 400, the film layer deposited between the first wall plate 310 and the second wall plate 320 will not be blocked by the isolation column 400, so that the film layer can be accurately deposited between the first wall plate 310 and the second wall plate 320, thereby improving the deposition accuracy of the film layer.

[0059] Step S30, forming a light emitting material layer, the light emitting material layer is divided into a light emitting portion 500 and a first removal layer 501 under the shielding effect of the isolation column 400, the light emitting portion 500 is located between the first wall plate 310 and the second wall plate 320, and the first removal layer 501 is located at the top of the isolation column 400. Fig.11 and Fig.12 As shown, the light output portion 500 is used to emit light. For example, the light output portion 500 includes an organic light output portion, a hole transport layer, a hole injection layer, an electron transport layer and an electron injection layer. The hole transport layer and the hole injection layer are sequentially arranged below the organic light output portion, and the electron transport layer and the electron injection layer are sequentially arranged above the organic light output portion.

[0060] Step S40, forming a conductive layer on the light emitting material layer, the conductive layer is divided into a second electrode layer 600 and a second removal layer 601 under the shielding effect of the isolation column 400, the second electrode layer 600 is located between the first wall plate 310 and the second wall plate 320, and the second removal layer 601 is located at the top of the first removal layer 501; it can also be known that through the limiting effect of the first wall plate 310 and the second wall plate 320, and the setting of the isolation column 400, the second electrode layer 600 can be accurately formed between the first wall plate 310 and the second wall plate 320. Through the strip-shaped setting of the first wall plate 310 and the second wall plate 320, the second electrode layer 600 is formed in a strip shape, that is, the second electrode layer 600 includes the second electrode strip 610. The hole injection layer can be in contact with the first electrode strip 210, and the electron injection layer can be in contact with the second electrode strip 610.

[0061] The first electrode strip 210 may be an anode, providing positive electricity. The second electrode strip 610 may be a cathode, providing negative electricity. Since the insulating group 300 intersects with the first electrode strip 210, it can be understood that the second electrode strip 610 also intersects with the first electrode strip 210. Of course, the first electrode strip 210 may be a cathode and the second electrode strip 610 may be an anode. In this way, the electron transport layer and the electron injection layer are arranged between the light emitting portion 500 and the first electrode strip 210; the hole transport layer and the hole injection layer are arranged between the organic light emitting portion and the second electrode strip 610.

[0062] The second electrode strips 610 may be arranged by depositing the second electrode layer 600 toward the isolation column 400 and the insulation group 300. By arranging the isolation column 400, the second electrode strips 610 can be formed between the first wall plate 310 and the second wall plate 320 during the deposition of the second electrode layer 600. Furthermore, by the positioning and limiting function of the first wall plate 310 and the second wall plate 320, etching is not involved in the process of arranging the second electrode strips 610. The second electrode strips 610 can be formed at an accurate position directly by film deposition, thereby reducing the corrosion effect of the etching process on the light output portion 500.

[0063] Of course, the light emitting portion 500 may also be a liquid crystal layer, and the deflection of liquid crystal molecules in the liquid crystal layer is controlled by controlling the voltage on the first electrode strips 210 and the second electrode strips 610, thereby achieving light transmission or light shielding.

[0064] It should be noted that the first electrode layer 200 and the second electrode layer 600 are generally made of transparent conductive materials, and the transparent conductive material may be ITO (Indium Tin Oxide).

[0065] Step S50, peeling off the isolation column 400, removing the first removal layer 501 and the second removal layer 601. Fig.13 As shown, the isolation column 400 is removed from the first electrode layer 200, and the first removal layer 501 and the second removal layer 601 located at the top of the isolation column 400 are removed simultaneously. In this way, the height of the display module can be reduced as a whole, which is conducive to the thin and light design of the display module. The removal method can be a bonding method to remove the isolation column 400 from the substrate 100.

[0066] In this embodiment, by setting the insulating group 300, when processing the light emitting portion 500, the light emitting portion 500 can be formed between the first wall plate 310 and the second wall plate 320. In other words, the formation position of the light emitting portion 500 is limited to the positioning space 301 of the first wall plate 310 and the second wall plate 320, so that the formation position of the light emitting portion 500 is more accurate.

[0067] In addition, the isolation column 400 is disposed between adjacent insulation groups 300 , and the isolation column 400 can be used to mask the position between the insulation groups 300 , thereby reducing the situation where the light emitting portion 500 is formed between the insulation groups 300 , and further improving the setting accuracy of the light emitting portion 500 .

[0068] In the related art, the structure of the isolation column 400 similar to the isolation column 400 will remain on the substrate 100, which will also block the light output angle of the light output portion 500, resulting in the light output portion 500 only being able to emit light directly above. By stripping off the isolation column 400, the light output angle of the light output portion 500 is reduced, and the range of the viewing angle is increased.

[0069] At the same time, the insulating group 300 can provide a certain degree of protection for the light emitting portion 500, isolating the light emitting portion 500 from the isolation column 400, and avoiding damage to the light emitting portion 500 due to displacement error when removing the isolation column 400, thereby reducing the impact of the stripping action on the light emitting portion 500. In addition, the isolation column 400 retained on the substrate 100 may fall off or fall over, and stripping off the isolation column 400 can also reduce this situation simultaneously.

[0070] It should be further explained that, generally, the position where the first electrode strip 210 and the second electrode strip 610 overlap is a pixel position point. By setting the insulating group 300, the setting accuracy of the second electrode strip 610 can be improved, thereby improving the shaping accuracy of the pixel position point.

[0071] See also Figure 3 As shown, in one embodiment of the present application, the step of forming a positioning component on the surface of the first electrode layer 200 includes:

[0072] In step S210 , a buffer layer 700 is formed on the surface of the first electrode layer 200 ; the buffer layer 700 can provide buffer protection for the first electrode layer 200 .

[0073] Step S220, the isolation column 400 is disposed on the surface of the buffer layer 700. The isolation column 400 can be disposed on the buffer layer 700 to isolate the isolation column 400 from the first electrode strip 210, so as to prevent the isolation column 400 from damaging the first electrode strip 210 during the stripping process. The buffer layer 700 can also prevent other signals from interfering with the first electrode layer 200, and has a certain insulation effect.

[0074] At the same time, the buffer layer 700 can also reduce the crosstalk signals between adjacent first electrode strips 210 through the isolation column 400 .

[0075] In one embodiment of the present application, the insulating group 300 is a transparent material, and the buffer layer 700 is made of the same material as the insulating group 300. By setting the insulating group 300 to a transparent material, the light from the light emitting portion 500 can be directly transmitted through the insulating group 300. It is ensured that the light emitting portion 500 can emit light over a wider viewing angle range, thereby improving the viewing angle range of the display module. The main material of the insulating group 300 can be an aluminum oxide film (Aluminum Oxide Films), such as the aluminum oxide film prepared by magnetron sputtering. The aluminum oxide film not only has high mechanical strength and stability, but also provides excellent insulation and corrosion resistance, as well as good optical transparency. The refractive index of the aluminum oxide film is generally between 1.6 and 1.8.

[0076] By using the same material as the insulating group 300, the types of materials used can be reduced, the steps of material replacement can be reduced during the manufacturing process, and the buffer layer 700 can be set while the insulating group 300 is being manufactured, thereby improving the processing efficiency. In addition, the materials of the buffer layer 700 and the insulating group 300 can also be different, and a material with better insulation performance or buffering protection can be set as the buffer layer 700 as needed.

[0077] The thickness of the insulation group 300 is generally controlled within the range of 0.15-0.2 um, so as to reduce the influence of the insulation group 300 on the subsequent packaging operation.

[0078] In one embodiment of the present application, the substrate 100 can also be set as a flexible substrate 100. For example, the display module can be applied to a folding screen. The material of the flexible substrate 100 is generally a polymer material such as polyimide plastic, polyetheretherketone or transparent conductive polyester.

[0079] In order to adapt to the setting of the flexible substrate 100, the connection between the buffer layer 700 and the insulation group 300 includes at least two conditions:

[0080] The first connection situation is that the buffer layer 700 is connected to the insulation group 300; that is, the buffer layer 700 connects two adjacent insulation groups 300 together to form a whole. In this way, the top of the connection electrode 212 is covered to reduce the exposure of the connection electrode 212. The upper surface of the connection electrode 212 is also sealed and covered.

[0081] The second connection situation is that a gap is set between the buffer layer 700 and the insulating group 300. By setting a gap between the buffer layer 700 and the insulating group 300, when the substrate 100 is folded, the mutual extrusion between the buffer layer 700 and the insulating group 300 can be reduced, and the extrusion force that damages the buffer layer 700 or the insulating group 300 can be reduced. Even when the substrate 100 is bent, the mutual pressure between the buffer layer 700 and the insulating group 300 can be avoided. If the insulating group 300 uses a material with a large Young's modulus, the insulating group 300 can be disconnected from the buffer layer 700 on the bottom surface, avoiding the generation of a large force between the buffer layer 700 on the bottom surface and the insulating group 300 on the side during the stretching process, reducing damage to the light output portion 500, and extending the life of the display module.

[0082] See also Figure 4 As shown, in one embodiment of the present application, the first electrode layer 200 includes a plurality of first electrode strips 210 arranged in parallel; the first electrode strips 210 are formed by etching the first electrode layer 200, or deposited by masking.

[0083] The step of forming the first electrode layer 200 on the surface of the substrate 100 includes:

[0084] Step S110, forming conductive sheets 211 arranged at intervals in sequence along the same direction on the surface of the substrate 100; it should be noted that the position of the conductive sheet 211 can be understood as the intersection of the second electrode strip 610 and the first electrode strip 210. The position of each conductive sheet 211 can be understood as a pixel position point, at which light can be emitted, and the positions between each adjacent conductive sheet 211 are spaced.

[0085] Step S120, etching the substrate 100 between adjacent conductive sheets 211 to form a sinking area; by etching, a sinking area is formed that is sunken on the surface of the substrate 100. The connection area may be etched first, and then the conductive sheet 211 is deposited, or the conductive sheet 211 may be deposited first, and then the substrate 100 is etched.

[0086] Step S130, a connection electrode 212 is provided in the sinking area, and the connection electrode 212 sequentially connects the conductive sheets 211 to form a first electrode strip 210. Through the sinking area, the connection electrode 212 has a small tensile deformation when bent in the sinking area, which can ensure that the connection electrode 212 plays a connecting role, well connects two adjacent conductive sheets 211 together, and ensures signal transmission between the conductive sheets 211, thereby improving the bendability of the display module.

[0087] See also Fig.17 and Fig.18As shown, in one embodiment of the present application, the connecting electrode 212 is at least partially bent and extended. When the screen is folded, the connecting electrode 212 can have good toughness under stretching by bending the connecting electrode 212, or it can be understood that the stretching length of the connecting electrode 212 is longer and can still maintain connection with the conductive sheet 211. For example, the connecting electrode 212 is set to a curved shape. For another example, the connecting electrode 212 is S-shaped, and the connecting electrode 212 can obtain a large deformation amount during the folding process of the substrate 100.

[0088] See also Fig.19 As shown, in one embodiment of the present application, the insulating group 300 covers the side wall surface of the light emitting portion 500, and the buffer layer 700 is disposed above the connecting electrode 212; the insulating group 300 can cover the entire side wall surface of the light emitting portion 500, reduce the entry of external water vapor into the light emitting portion 500, and reduce the impact on the light emitting portion 500. It can be understood that the insulating group 300 plays a role in encapsulating and protecting the light emitting portion 500.

[0089] See also Figure 5 and Fig.15 As shown, in one embodiment of the present application, multiple insulating groups 300 are provided, and a hollow area is formed between two adjacent insulating groups 300; a filling layer can be formed in the hollow structure, and the Young's modulus of the filling layer is smaller than that of the insulating group 300 on the side. The Young's modulus of the insulating group 300 on the side is larger, and it is not easy to deform, and it is easier to protect the light output part 500; while the Young's modulus of the filling layer is small, and it is easier to deform, and it is in the hollow area, which can be easily stretched.

[0090] After the step of stripping the isolation column 400, the method further comprises:

[0091] Step S60, a driving line 810 is arranged in the hollow area between two adjacent insulation groups 300. Various signal driving lines 810 are usually arranged in the display module, and various control signals can be transmitted through the driving lines 810. By arranging the driving lines 810 in the hollow area, the space of the hollow area can be fully utilized, and the space occupied by the driving lines 810 in other positions can be saved.

[0092] See also Figure 6 and Fig.16 As shown, in one embodiment of the present application, after the step of setting the driving line 810 in the hollow area between two adjacent insulation groups 300, the following steps are included:

[0093] In step S70 , a packaging layer 830 is disposed on the surface of the second electrode layer 600 ; the packaging layer 830 is used to protect the second electrode layer 600 and reduce the erosion of water vapor.

[0094] In step S80, a sensing line 820 is arranged on the surface of the encapsulation layer 830. The sensing line 820 is orthogonal to the extension direction of the driving line 810, and a touch capacitor is formed at the position where the driving line 810 and the sensing line 820 face each other. It can be seen that this embodiment can make full use of the structural design of the display module, and add a touch solution on the basis of the display module, so that the display module can receive touch commands while completing the picture display.

[0095] When a grounded conductive object approaches or touches the surface of the touch screen, the capacitance on the touch screen will change. Capacitive touch screens use these capacitance changes to sense information such as the contact position of a conductive object. The human body can be regarded as a conductor with a large resistance. When a finger touches the screen, the capacitance of the screen changes. The control circuit determines the location of the touch by detecting the change in the capacitance of the screen.

[0096] Through the overlap of the driving line 810 and the sensing line 820, the driving line 810 and the sensing line 820 are partially arranged opposite to each other, and after power is turned on, a touch capacitor is formed at the position where the driving line 810 and the sensing line 820 are opposite to each other. Since there are multiple driving lines 810 and sensing lines 820, adjacent driving lines 810 are evenly spaced, and adjacent sensing lines 820 are also evenly spaced, and multiple touch capacitors are formed. Multiple touch capacitors are distributed in a matrix manner, evenly distributed on the entire surface area of ​​the display module. When a finger approaches or touches the display module, the size of the touch capacitor will change.

[0097] This embodiment is conducive to improving space utilization, so as to achieve the effect of reducing the thickness of the panel. A capacitive touch solution can also be added according to the hollow area between the insulation groups 300, thereby improving the multifunctionality and intelligence of the product.

[0098] See also Figure 7 As shown, in one embodiment of the present application, the step of forming a positioning component on the surface of the first electrode layer 200 also has two cases, respectively including:

[0099] Step S21, pre-form the isolation column 400, place the isolation column 400 on the substrate 100, and form the insulation group 300 within the orthographic projection range of the isolation column 400 on the substrate 100; first set the isolation column 400, and then form the insulation group 300. For example, a mask plate is pre-made, the isolation column 400 is located on the mask plate, and the mask plate and the substrate 100 are oppositely buckled together, so that the isolation column 400 is placed between the insulation group 300.

[0100] The mask plate is made to fit with the substrate 100 to avoid the problem of deformation of the mask plate due to gravity. Compared with the prior art, the present invention reduces the distance between the mask plate and the substrate 100, which is also conducive to improving the pattern accuracy. In addition, after the mask plate is removed, the light extraction efficiency of the product is also improved, while avoiding the risk of the isolation column 400 falling off. The mask mold can be made of high-strength and high-temperature resistant materials, such as metal alloy iron alloy, nickel alloy, etc. This can improve the product yield and reliability.

[0101] Step S22, forming an insulating group 300 on the first electrode layer 200, and placing the pre-formed isolation column 400 on the first electrode layer 200. That is, the insulating group 300 is first made, and then the isolation column 400 is arranged. The isolation column 400 can be arranged by using a mold.

[0102] In one embodiment of the present application, the cross section of the isolation column 400 gradually increases from the bottom to the top, and a gap is set between the side wall surface of the isolation column 400 and the adjacent insulation group 300. The isolation column 400 can be an inverted trapezoidal structure, and the isolation column 400 is narrow at the bottom and wide at the top, so that the lower end of the isolation column 400 can be set between two adjacent insulation groups 300, and the upper end of the isolation column 400 can block the position space of the two adjacent insulation groups 300.

[0103] By setting a gap between the isolation column 400 and the insulation group 300 , the isolation column 400 can be separated from the insulation group 300 by a certain distance, so that when the isolation column 400 is peeled off, the isolation column 400 can be prevented from touching or scratching the insulation group 300 .

[0104] Embodiment 2

[0105] See again Fig.12 As shown, the present application also provides a display module, which is manufactured by the manufacturing method of the above-mentioned display module. Through the above-mentioned manufacturing method, the isolation column 400 is peeled off. The display module includes: a substrate 100, a first electrode layer 200, an insulating group 300, a light emitting portion 500 and a second electrode layer 600, wherein the first electrode layer 200 is arranged on the surface of the substrate 100; the insulating group 300 includes a first wall plate 310 and a second wall plate 320 arranged at intervals, and a positioning space 301 is formed between the first wall plate 310 and the second wall plate 320; the light emitting portion 500 is arranged in the positioning space 301; the second electrode layer 600 is arranged in the positioning space 301 and is located on the surface of the light emitting portion 500.

[0106] In this embodiment, by setting the insulating group 300, when processing the light emitting portion, the light emitting portion 500 can be formed between the first wall plate 310 and the second wall plate 320. That is to say, the formation position of the light emitting portion 500 is limited between the first wall plate 310 and the second wall plate 320, and the formation position of the light emitting portion 500 is made more accurate by the positioning space 301, thereby improving the setting accuracy of the light emitting portion 500.

[0107] Embodiment 3

[0108] The present application also provides a display device, which includes the display module as described above, the first electrode layer 200 is an anode, the second electrode layer 600 is a cathode, and the sidewall surface of the isolation column 400 is spaced apart from the insulation group 300. Positive electricity is provided to the first electrode strip 210, and negative electricity is provided to the second electrode strip 610, so that a potential difference is formed between the first electrode strip 210 and the second electrode strip 610, so that the light emitting portion 500 between the first electrode strip 210 and the second electrode strip 610 can emit light to complete the picture display.

[0109] For example, the display module also includes a drive line 810 and a sensing line 820, and the display device also includes a detection circuit and a drive circuit, the drive circuit is connected to the drive line 810, and the detection circuit is connected to the sensing line 820. A touch capacitor is formed at the intersection of the drive line 810 and the sensing line 820. When a finger approaches the touch capacitor, the capacitance of the touch capacitor will change. The capacitance change can be detected by the detection circuit to determine the position of the finger touch. A capacitor array is formed on the entire screen. When a finger touches the surface of the touch screen, the capacitance value of the touched position will change. According to the changes in this two-dimensional capacitor array, the two-dimensional touch coordinates can be calculated.

[0110] For other specific implementations and beneficial effects of the display device, please refer to the above-mentioned display module solution, which will not be described in detail here.

[0111] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary technical means in the art that are not disclosed in the present application.

[0112] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A display module, characterized in that: The display module comprises: substrate; A first electrode layer, wherein the first electrode layer is disposed on a surface of the substrate; An insulation group, the insulation group comprising a first wall plate and a second wall plate arranged at intervals, a positioning space being formed between the first wall plate and the second wall plate; A light emitting portion, wherein the light emitting portion is disposed in the positioning space; The second electrode layer is disposed in the positioning space and located on the surface of the light emitting portion.

2. The display module according to claim 1, characterized in that: The display module further includes a buffer layer, which is disposed on the surface of the first electrode layer and between two adjacent insulation groups.

3. The display module according to claim 2, characterized in that: The insulating group is made of transparent material, and the buffer layer is made of the same material as the insulating group.

4. The display module according to claim 2, characterized in that: The buffer layer is connected to the insulation group, or the buffer layer is spaced apart from the insulation group.

5. The display module according to claim 1, characterized in that: The first electrode layer includes a plurality of first electrode strips arranged in parallel, the first electrode strips include a conductive sheet and a connecting electrode, a plurality of the conductive sheets are provided, and the plurality of the conductive sheets are arranged at intervals along the same direction, the substrate forms a sinking area between adjacent conductive sheets, the connecting electrode is arranged in the sinking area, and connects two adjacent conductive sheets.

6. The display module according to claim 5, characterized in that: The connecting electrode is at least partially bent and extended.

7. The display module according to claim 1, characterized in that: A hollow area is formed between two adjacent insulation groups, and the display module includes a driving line, and the driving line is arranged in the hollow area.

8. The display module according to claim 7, characterized in that: The display module also includes a packaging layer and a sensing line. The packaging layer is arranged on the surface of the second electrode layer. The sensing line is arranged on the surface of the packaging layer. The sensing line is orthogonal to the extension direction of the driving line. The position where the driving line and the sensing line face each other forms a touch capacitor.

9. A method for preparing a display module, characterized in that: The method for preparing the display module comprises: forming a first electrode layer on a surface of the substrate; A positioning component is formed on the surface of the first electrode layer, the positioning component includes an insulating group and two isolation columns, the two isolation columns are respectively located on opposite sides of the insulating group, the insulating group includes a first wall plate and a second wall plate arranged at intervals, the upper end of the isolation column extends to the top of the insulating group, wherein the first wall plate and the second wall plate have inner wall surfaces arranged oppositely, the inner wall surface of the first wall plate is flush with the side edge of the adjacent isolation column, and the inner wall surface of the second wall plate is flush with the side edge of the adjacent isolation column; forming a light emitting material layer, wherein the light emitting material layer is divided into a light emitting portion and a first removal layer under the shielding effect of the isolation column, the light emitting portion is located between the first wall plate and the second wall plate, and the first removal layer is located at the top of the isolation column; A conductive layer is formed on the light emitting material layer, and the conductive layer is divided into a second electrode layer and a second removal layer under the shielding effect of the isolation column, wherein the second electrode layer is located between the first wall plate and the second wall plate, and the second removal layer is located on the top of the first removal layer; The isolation column is peeled off, and the first removal layer and the second removal layer are removed.

10. A display device, characterized in that: The display device comprises the display module as claimed in any one of claims 1 to 8, the first electrode layer is an anode, the second electrode layer is a cathode, and the side wall surface of the isolation column is spaced apart from the insulation group.

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