Display module, display device and manufacturing method thereof

Abstract

The present invention provides a display module, a display device, and a method for manufacturing the same. The display module includes an OLED display panel and a touch panel, wherein a plurality of spacers are provided between the OLED display panel and the touch panel to maintain a preset spacing distance between the display panel and the touch panel; the display panel includes a first substrate and a plurality of light-emitting device units, wherein a plurality of non-luminous regions are formed between the plurality of light-emitting device units, and each spacer is provided in one of the non-luminous regions; the light-emitting device units include a first electrode layer, a pixel defining layer, a light-emitting layer, and a second electrode layer arranged in sequence, wherein the corresponding setting area of the pixel defining layer is a non-luminous region, and each spacer is located on the side of the second electrode layer away from the light-emitting layer. Using this display module, by providing spacers, the electrodes of the display panel are located on the side of the spacers away from the touch panel, thereby avoiding the problem of touch impairment caused by current crosstalk when the display device is powered on.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display module, a display device and a manufacturing method thereof. Background Art

[0002] In the field of organic light-emitting diode (OLED) displays, particularly in wearable OLED applications, incell technology has been a hot topic for development due to its advantages such as narrow bezels, low cost, high touch performance, and thinner screens. However, a major issue with implementing incell technology is current crosstalk. This occurs when internal current causes excessive changes in the self-capacitance of the device and the sensing capacitor, making it difficult for the IC to distinguish whether the signal change is caused by a human touch or internal current flow, thus causing touch failure. Summary of the Invention

[0003] The technical solution of the present invention aims to provide a display module, a display device and a manufacturing method thereof, so as to solve the problem of touch impairment caused by current crosstalk in display modules of the prior art.

[0004] One embodiment of the present invention provides a display module, comprising:

[0005] An OLED display panel and a touch panel are arranged in a box, wherein a plurality of spacers arranged in an array are provided between the OLED display panel and the touch panel, and the spacers are used to maintain a preset spacing distance between the OLED display panel and the touch panel;

[0006] The OLED display panel includes a first base substrate and a plurality of OLED light-emitting device units located on the first base substrate, wherein a plurality of non-luminous regions are formed between the plurality of OLED light-emitting device units, and each of the spacers is respectively disposed in one of the non-luminous regions;

[0007] The OLED light-emitting device unit includes a first electrode layer, a pixel defining layer, a light-emitting layer and a second electrode layer arranged in sequence along a direction away from the first base substrate, the corresponding setting area of the pixel defining layer is the non-light-emitting area, and each of the spacers is located on the side of the second electrode layer away from the light-emitting layer.

[0008] Optionally, in the display module, a plurality of the spacers are respectively made on the OLED display panel; or a plurality of the spacers are respectively made on the touch panel.

[0009] Optionally, in the display module, among the plurality of spacers, a first number of the spacers are made on the OLED display panel, and a second number of the spacers are made on the touch panel.

[0010] Optionally, in the display module, a first portion of the spacer is made on the OLED display panel, and a second portion of the spacer is made on the touch panel.

[0011] Optionally, in the display module, a projection of each of the spacers on the plane where the pixel defining layers are located overlaps with one of the pixel defining layers.

[0012] Optionally, in the display module, the touch panel includes a second base substrate, a touch sensing layer, and an insulating layer stacked in sequence, and the spacer is located on a side of the insulating layer away from the touch sensing layer.

[0013] Optionally, in the display module, the plurality of spacers are all made of transparent material.

[0014] Optionally, in the display module, the plurality of spacers are all made of conductive material, and the spacers are electrically connected to the second electrode layer.

[0015] An embodiment of the present invention further provides a display device, comprising the display module as described in any one of the above items.

[0016] An embodiment of the present invention further provides a method for preparing a display module, wherein the method is applied to the display module as described in any one of the above items, and the method includes:

[0017] Produce OLED display panels and touch panels separately;

[0018] Producing a plurality of spacers arranged in an array on the OLED display panel and / or the touch panel;

[0019] The OLED display panel and the touch panel are opposite to each other to form the display module; and a preset spacing distance is maintained between the OLED display panel and the touch panel through the spacer.

[0020] Optionally, the preparation method, wherein a plurality of spacers arranged in an array are produced on the OLED display panel and / or the touch panel, comprises:

[0021] Producing a plurality of spacers arranged in an array on the OLED display panel; or,

[0022] Producing a plurality of spacers arranged in an array on the touch panel; or,

[0023] Manufacturing a first number of the spacers on the OLED display panel and a second number of the spacers on the touch panel; or

[0024] A first portion of the spacer is manufactured on the OLED display panel, and a second portion of the spacer is manufactured on the touch panel.

[0025] Optionally, the preparation method, wherein a plurality of spacers arranged in an array are produced on the OLED display panel and / or the touch panel, comprises:

[0026] A plurality of spacers are manufactured on the OLED display panel and / or the touch panel through a patterning process.

[0027] At least one of the above technical solutions in the specific embodiments of the present invention has the following beneficial effects:

[0028] The display module described in the embodiment of the present invention provides a spacer between the OLED display panel and the touch panel, so that the electrodes of the OLED display panel are located on the side of the spacer away from the touch panel. This increases the distance between the OLED display panel and the touch panel, thereby reducing parasitic capacitance and avoiding the problem of current crosstalk causing touch failure when the OLED display device is powered on. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram of the structure of the display module according to an embodiment of the present invention;

[0030] Figure 2 A schematic cross-sectional view of one embodiment of the display module according to the present invention;

[0031] Figure 3 A schematic plan view showing the placement of spacers in a display module according to an embodiment of the present invention;

[0032] Figure 4 FIG1 is a schematic cross-sectional structural diagram of a touch panel in a display module according to one embodiment of the present invention;

[0033] Figure 5 is a schematic cross-sectional structural diagram of another embodiment of the display module according to an embodiment of the present invention;

[0034] Figure 6 Schematic diagram of a method for preparing a display module according to an embodiment of the present invention. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0036] In conventional OLED display modules, the distance between the cathode of the OLED display device and the capacitor on the touch panel is relatively close. As a result, changes in the charge on the electrodes of the OLED display device significantly affect the capacitance value on the touch panel. When the OLED display device is powered on, current crosstalk is generated, affecting the touch chip's ability to capture the capacitance value on the touch panel, thereby causing touch failure. To address this technical problem, an embodiment of the present invention provides a display module that increases the distance between the OLED display panel and the touch panel by providing a spacer between the two panels, thereby reducing parasitic capacitance and avoiding the problem of current crosstalk causing touch failure when the OLED display device is powered on.

[0037] One embodiment of the present invention provides a display module, such as Figure 1 and Figure 2 As shown, including:

[0038] An OLED display panel 100 and a touch panel 200 are arranged in a cell, wherein a plurality of spacers 300 arranged in an array are provided between the OLED display panel 100 and the touch panel 200, and the spacers 300 are used to maintain a preset spacing distance between the OLED display panel 100 and the touch panel 200;

[0039] The OLED display panel 100 includes a first base substrate 110 and a plurality of OLED light emitting device units 130 located on the first base substrate 110. A plurality of non-light emitting regions 140 are formed between the plurality of OLED light emitting device units 130. Figure 3 As shown, each spacer 300 is respectively disposed in one of the non-luminous regions 140 ;

[0040] The OLED light-emitting device unit 130 includes a first electrode layer 131, a pixel defining layer 134, a light-emitting layer 132 and a second electrode layer 133 arranged in sequence along a direction away from the first base substrate 110, the corresponding setting area of the pixel defining layer 134 is a non-light-emitting area 140, and each spacer 300 is located on the side of the second electrode layer 133 away from the light-emitting layer 132.

[0041] By using the display module described in the embodiment of the present invention, the problem that the prior art disposes spacers above the pixel defining layer of the OLED display panel, resulting in a small distance between the electrodes located above the spacers and the touch panel 200, is addressed. By disposing spacers 300 between the OLED display panel 100 and the touch panel 200, the electrodes of the OLED display panel 100 are located on the side of the spacers 300 away from the touch panel 200, thereby increasing the distance between the OLED display panel 100 and the touch panel 200, thereby reducing parasitic capacitance and avoiding the problem of touch failure caused by current crosstalk when the OLED display device is powered on.

[0042] In one embodiment of the present invention, the display module is as follows: Figure 2 As shown, the OLED display panel 100 includes a first base substrate 110, a driving unit 120 fabricated on the first base substrate 110, and an OLED light-emitting device unit 130 fabricated on the driving unit 120; the touch panel 200 includes a second base substrate 210 and a touch sensing layer 220 fabricated on the second base substrate 210. The second base substrate 210 is arranged parallel to the first base substrate 110, and the OLED display panel 100 and the touch panel 200 are arranged opposite each other to form a display module.

[0043] Optionally, one embodiment, such as Figure 4 As shown, a first encapsulation layer 240 is further provided between the second base substrate 210 and the touch sensing layer 220 of the touch panel 200 . The first encapsulation layer 240 includes an inorganic encapsulation layer 243 , an organic encapsulation layer 242 and an inorganic encapsulation layer 241 sequentially provided on the second base substrate 210 .

[0044] In one embodiment, an insulating layer 230 is disposed on the touch sensing layer 220 , and a plurality of spacers 300 are respectively manufactured on the insulating layer 230 .

[0045] Optionally, according to Figure 2 As shown, in one embodiment, in a direction perpendicular to the first base substrate 110, the cross section of the spacer 300 can be formed into a regular trapezoid, that is, the spacer 300 is formed into a cylindrical shape with a cross section changing from top to bottom; in another embodiment, as shown Figure 4 As shown, the cross-section of the spacer 300 can also be formed into a rectangle in a direction perpendicular to the first base substrate 110, that is, the spacer 300 is formed into a cylindrical shape with a constant cross-section from top to bottom. The specific shape of the spacer 300 can be determined according to design requirements and is not limited here.

[0046] In the embodiment of the present invention, combined with Figure 3As shown, the orthographic projections of the OLED light-emitting device units 130 on a plane parallel to the first base substrate 110 are distributed in an array. Taking a top-emitting type as an example, light emitted by the multiple OLED light-emitting device units 130 passes through the touch panel 200 and out of the second base substrate 210. The multiple OLED light-emitting device units 130 form a plurality of non-luminescent regions 140 spaced apart from each other. Multiple spacers 300, located between the OLED display panel 100 and the touch panel 200, are respectively disposed in the non-luminescent regions 140. Optionally, each spacer 300 is disposed in one of the non-luminescent regions 140.

[0047] Optionally, to ensure the stability of the thickness of the OLED display panel 100 and the touch panel 200 , a plurality of spacers 300 are evenly distributed between the OLED display panel 100 and the touch panel 200 .

[0048] In another embodiment, optionally, to ensure the high light transmittance requirement of the display module, the multiple spacers 300 are each made of a transparent material, such as a highly transparent polyimide (PI)-based composite material. In one embodiment of the present invention, in one embodiment, optionally, the multiple spacers 300 are each fabricated on the OLED display panel 100, that is, after fabricating the OLED light-emitting device unit 130 of the OLED display panel 100, the multiple spacers 300 are fabricated on the OLED light-emitting device unit 130;

[0049] In another embodiment, optionally, multiple spacers 300 are respectively manufactured on the touch panel 200, that is, after the touch sensing layer 220 of the touch panel 200 is manufactured, the multiple spacers 300 are manufactured on the touch sensing layer 220; in this embodiment, optionally, an insulating layer 230 is also manufactured between the spacers 300 and the touch sensing layer 220. It is necessary to manufacture the spacers 300 after the insulating layer 230 is completed on the touch sensing layer 220, so that the spacers 300 are located on the side of the insulating layer 230 away from the touch sensing layer 220.

[0050] In another embodiment, optionally, among the multiple spacers 300, a first number of spacers 300 are made on the OLED display panel 100, and a second number of spacers 300 are made on the touch panel 200; specifically, when a large number of spacers 300 are set between the OLED display panel 100 and the touch panel 200 and the density is high, a part of the multiple spacers 300 can be made on the touch panel 200, and another part of the spacers 300 can be made on the OLED display panel 100, so as to reduce the process complexity when making multiple spacers 300 in the same process.

[0051] In another embodiment, optionally, for each spacer 300, the first portion of the spacer 300 is fabricated on the OLED display panel 100, and the second portion of the spacer 300 is fabricated on the touch panel 200. Thus, when the OLED display panel 100 and the touch panel 200 are aligned, the first and second portions of the spacer 300 are aligned to form a complete spacer 300. With this embodiment, the spacers 300 can be fabricated in two separate processes, each on a different panel, depending on process requirements.

[0052] In the embodiment of the present invention, combined with Figure 2 As shown, optionally, in the OLED display panel 100, the driving unit 120 arranged on the first base substrate 110 includes a buffer layer 121, an active layer 122, a gate insulation layer 123, a gate layer 124, an interlayer insulation layer 125, a source / drain layer 126 and a flat layer 127, which are arranged in sequence.

[0053] The light emitting device unit 130 includes a first electrode layer 131 , a light emitting layer 132 and a second electrode layer 133 which are sequentially formed on the planar layer 127 , and the light emitting layer 132 is formed in the pixel defining layer 134 .

[0054] Optionally, the first electrode layer 131 is an anode layer, and the second electrode layer 133 is a cathode layer.

[0055] The first electrode layer 131 is connected to the source / drain layer 126 of the driving unit 120 through a via hole penetrating the planar layer 127 , so that a control signal can be input to the first electrode layer 131 through the driving unit 120 .

[0056] In addition, the pixel defining layer 134 formed on the first electrode layer 131 forms a plurality of spacing spaces, each spacing space being used to expose the first electrode layer 131, so that the light-emitting layer 132 and the second electrode layer 133 can continue to be produced on the exposed first electrode layer 131, and an OLED light-emitting device unit 130 is formed based on the stacked and relatively arranged first electrode layer 131, the light-emitting layer 132 and the second electrode layer 133, and the voltage difference between the first electrode layer 131 and the second electrode layer 133 is used to make the light-emitting layer 132 emit light, and the light is transmitted through the touch panel 200.

[0057] With this implementation structure, the corresponding setting area of each pixel defining layer 134 is formed into a non-luminous area. Figure 2As shown, each spacer 300 is located on a side of the second electrode layer 133 away from the light-emitting layer 132, and its projection onto the plane where the pixel-defining layer 134 is located overlaps with the pixel-defining layer 134. That is, in this embodiment, each spacer 300 disposed between the OLED light-emitting device unit 130 and the touch panel 200 corresponds to one of the pixel-defining layers 134, thereby preventing the spacer 300 from affecting the display effect.

[0058] In one embodiment of the present invention, the plurality of spacers 300 may be made of a conductive material, and the spacers 300 are electrically connected to the second electrode layer 133. Alternatively, the spacers 300 may be made on the second electrode layer 133.

[0059] Alternatively, as Figure 2 As shown, optionally, a second encapsulation layer 135 is also formed on the second electrode layer 133. Figure 5 As shown, the second encapsulation layer 135 includes an inorganic encapsulation layer 1351 , an organic encapsulation layer 1352 and an inorganic encapsulation layer 1353 sequentially disposed on the second electrode layer 133 .

[0060] Optionally, combined Figure 2 and Figure 5 As shown, an adhesive layer 400 may be further provided around the spacer 300 between the OLED display panel 100 and the touch panel 200 to achieve connection between the OLED display panel 100 and the touch panel 200 when the OLED display panel 100 and the touch panel 200 are assembled.

[0061] In an embodiment of the present invention, optionally, the touch sensing layer includes a first ITO layer and a second ITO layer that are arranged opposite to and spaced apart from each other, and mutually perpendicular sensing circuits are respectively provided on the first ITO layer and the second ITO layer to form a capacitive sensing structure; when current passes through the sensing circuit on the first ITO layer, when a finger presses the second base substrate (glass cover), the sensing circuit on the second ITO layer generates a capacitance signal change, and the position of the touch operation can be determined by locating the position of the sensing circuit that generates the capacitance signal change.

[0062] Compared to the prior art method of placing spacers above the pixel-defining layer of the OLED display panel, the display module described in the embodiment of the present invention places spacers between the OLED display panel and the touch panel. This positions the electrodes of the OLED display panel 100 on the side of the spacer 300 away from the touch panel 200. This increases the distance between the OLED display panel 100 and the touch panel 200, thereby reducing parasitic capacitance and avoiding the problem of current crosstalk and touch interference when the OLED display device is powered on. In addition, because the spacer 300 is placed between the OLED display panel and the touch panel, rather than within the OLED light-emitting device unit, it can also reduce the impact of water vapor volatilized from the spacer on the light-emitting layer material.

[0063] Another aspect of the present invention provides a display device, wherein the display device includes the display module of the above-mentioned embodiment.

[0064] Combine Figures 1 to 5 As shown in the figure, and referring to the detailed description above, those skilled in the art should be able to understand the specific implementation structure of the display device using the display module described in the embodiment of the present invention, which will not be described in detail here.

[0065] Another embodiment of the present invention provides a method for manufacturing a display module, which is applied to the display module having the above-mentioned structure. Figure 6 As shown, the method includes:

[0066] S610, manufacturing OLED display panel and touch panel respectively;

[0067] S620, manufacturing a plurality of spacers arranged in an array on the OLED display panel and / or the touch panel;

[0068] S630: The OLED display panel and the touch panel are arranged opposite to each other to form the display module; and a preset spacing distance is maintained between the OLED display panel and the touch panel by using the spacer.

[0069] Optionally, in step S620, a plurality of spacers arranged in an array are manufactured on the OLED display panel and / or the touch panel, including:

[0070] Producing a plurality of spacers arranged in an array on the OLED display panel; or,

[0071] Producing a plurality of spacers arranged in an array on the touch panel; or,

[0072] Manufacturing a first number of the spacers on the OLED display panel and a second number of the spacers on the touch panel; or

[0073] A first portion of the spacer is manufactured on the OLED display panel, and a second portion of the spacer is manufactured on the touch panel.

[0074] In another embodiment, optionally, in step S620, a plurality of spacers arranged in an array are manufactured on the OLED display panel and / or the touch panel, including:

[0075] A plurality of spacers are manufactured on the OLED display panel and / or the touch panel through a patterning process.

[0076] Take the production of spacers on a touch panel as an example, combined with Figure 2 and Figure 5 , making spacers on a touch panel can include the following steps:

[0077] Providing a second base substrate 210;

[0078] A first ITO layer is formed on the second substrate through a patterning process, wherein the first ITO layer includes a plurality of first sensing lines along a first direction;

[0079] Forming a first insulating layer on the second base substrate on which the first ITO layer is formed;

[0080] A second ITO layer is formed on the first insulating layer through a patterning process, wherein the second ITO layer includes a plurality of second sensing lines along a second direction; the first direction is perpendicular to the second direction; the first ITO layer and the second ITO layer form a capacitive sensing structure;

[0081] A second insulating layer (ie, insulating layer 230 ) is formed on the second base substrate 210 on which the second ITO layer is formed;

[0082] A plurality of spacers 300 are formed on the second insulating layer through a patterning process.

[0083] In addition, combined Figure 2 As shown, the production of an OLED display panel may include the following steps:

[0084] 1) Providing a first base substrate 110;

[0085] 2) After forming a buffer layer 121 on the first base substrate, an active layer 122 and a gate insulating layer 123 are formed in sequence;

[0086] 3) forming a gate layer 123 on the first base substrate 110 on which the active layer 122 and the gate insulating layer 123 are formed;

[0087] 4) forming an interlayer insulating layer 125 on the first base substrate 110 on which the gate layer 124 is formed;

[0088] 5) Forming a source / drain electrode layer 126 on the first base substrate 110 after forming the interlayer insulating layer 125. The source / drain electrode layer 126 includes the source and drain electrodes of the thin film transistor and one plate of the storage capacitor, i.e., a short-distance conductive line. During this process, the formed source / drain electrode layer 126 is connected to the active layer 122 through vias;

[0089] 6) Forming a planarization layer 127 on the first base substrate 110 on which the source / drain layer 126 is formed;

[0090] 7) Fabricating a first electrode layer 131 on the first base substrate 110 on which the planar layer 127 is fabricated. Optionally, the VSS signal line and the data signal line may be fabricated using the same patterning process and the same conductive material. Optionally, a VDD signal line and a compensation signal line parallel to the data signal line may also be fabricated simultaneously.

[0091] Among them, Figure 2 As shown, the fabricated first electrode layer 131 is connected to the source / drain layer 126 of the thin film transistor through a via hole penetrating the planar layer 127;

[0092] 8) Fabricating a pixel defining layer 134 on the base substrate on which the first electrode layer 131 is fabricated;

[0093] 9) The light-emitting layer 132 and the second electrode layer 133 are sequentially formed on the first base substrate 110 on which the pixel defining layer 134 is formed; optionally, a second encapsulation layer 135 may also be formed on the second electrode layer 133 .

[0094] Furthermore, the OLED display panel manufactured using the above-mentioned implementation steps is placed opposite to the touch panel manufactured with a spacer, so that the spacer is set between the OLED display panel and the touch panel, thereby increasing the spacing distance between the OLED display panel and the touch panel, thereby reducing parasitic capacitance and avoiding the problem of touch obstruction caused by current crosstalk when the OLED display device is powered on.

[0095] It should be noted that the above-described display module manufacturing process is only one embodiment of the display module of the present invention and is not limited thereto. For example, the spacers can also be manufactured on the OLED display panel, that is, after the second electrode layer is manufactured. The specific manufacturing process will not be described in detail here.

[0096] It should be noted that the patterning process mentioned in the present invention may be a photolithography process, which is not the research focus of the method for preparing the display module described in the embodiment of the present invention and will not be described in detail here.

[0097] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary personnel in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A display module, characterized in that: include: An OLED display panel and a touch panel are arranged in a cell, wherein a plurality of spacers arranged in an array are provided between the OLED display panel and the touch panel, the spacers being used to maintain a preset spacing distance between the OLED display panel and the touch panel, thereby reducing a parasitic capacitance between the touch panel and the OLED display panel by the preset spacing distance; The touch panel includes a touch sensing layer, which includes a first ITO layer and a second ITO layer that are oppositely and spaced apart, forming a capacitive sensing structure and disposed on a side of the spacer away from the OLED display panel; an insulating layer of uniform thickness is disposed on the touch sensing layer, and the spacer is connected to the insulating layer; The OLED display panel includes a first base substrate and a plurality of OLED light-emitting device units located on the first base substrate, wherein a plurality of non-luminous regions are formed between the plurality of OLED light-emitting device units, and each of the spacers is respectively disposed in one of the non-luminous regions; The OLED light-emitting device unit includes a first electrode layer, a pixel defining layer, a light-emitting layer, and a second electrode layer arranged in sequence along a direction away from the first base substrate, the corresponding setting area of the pixel defining layer is the non-light-emitting area, and each of the spacers is located on the side of the second electrode layer away from the light-emitting layer; wherein a second encapsulation layer is produced on the second electrode layer, the spacers are connected to the second encapsulation layer, and multiple spacers are evenly distributed between the OLED display panel and the touch panel, and an adhesive layer is provided on the periphery of the spacers.

2. The display module according to claim 1, wherein: The plurality of spacers are respectively made on the OLED display panel; or, the plurality of spacers are respectively made on the touch panel.

3. The display module according to claim 1, wherein: Among the plurality of spacers, a first number of the spacers are made on the OLED display panel, and a second number of the spacers are made on the touch panel.

4. The display module according to claim 1, wherein: The first part of the spacer is made on the OLED display panel, and the second part of the spacer is made on the touch panel.

5. The display module according to claim 1, wherein: The projection of each of the spacers on the plane where the pixel defining layers are located overlaps with one of the pixel defining layers.

6. The display module according to any one of claims 1 to 5, wherein: The touch panel includes a second base substrate, a touch sensing layer and an insulating layer stacked in sequence, and the spacer is located on a side of the insulating layer away from the touch sensing layer.

7. The display module according to claim 1, wherein: The plurality of spacers are all made of transparent materials.

8. The display module according to claim 1, wherein: The plurality of spacers are all made of conductive material, and the spacers are electrically connected to the second electrode layer.

9. A display device, characterized in that: A display module comprising any one of claims 1 to 8.

10. A method for preparing a display module, characterized in that: Applied to the display module according to any one of claims 1 to 8, the method comprises: Produce OLED display panels and touch panels separately; Producing a plurality of spacers arranged in an array on the OLED display panel and / or the touch panel; The OLED display panel and the touch panel are opposite to each other to form the display module; and a preset spacing distance is maintained between the OLED display panel and the touch panel through the spacer.

11. The preparation method according to claim 10, characterized in that: Producing a plurality of spacers arranged in an array on the OLED display panel and / or the touch panel, including: Producing a plurality of spacers arranged in an array on the OLED display panel; or, Producing a plurality of spacers arranged in an array on the touch panel; or, Manufacturing a first number of the spacers on the OLED display panel and a second number of the spacers on the touch panel; or A first portion of the spacer is manufactured on the OLED display panel, and a second portion of the spacer is manufactured on the touch panel.

12. The preparation method according to claim 10, characterized in that Producing a plurality of spacers arranged in an array on the OLED display panel and / or the touch panel, including: A plurality of spacers are manufactured on the OLED display panel and / or the touch panel through a patterning process.

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