Display modules and electronic devices

Abstract

This disclosure relates to a display module and an electronic device. The display module includes a light-emitting layer and a functional layer. The light-emitting layer includes a first side for emitting light and a protective layer that can be disposed on the first side. At least a portion of the protective layer can be removed relative to the light-emitting layer. The functional layer is disposed on the first side and has a first refractive index. The protective layer has a second refractive index. The first side includes a first region where the functional layer is disposed and a protective layer remains, and a second region where the functional layer is disposed but no protective layer remains. The deviation between the first refractive index and the second refractive index is less than or equal to a deviation threshold, such that the deviation between the refractive index of the first region and the refractive index of the second region is less than or equal to the deviation threshold.

Description

Technical Field

[0001] This disclosure relates to the field of display device technology, and in particular to a display module and electronic device. Background Technology

[0002] Electronic devices include display modules, which can output visual information such as images, videos, and text to enable human-computer interaction. During the manufacturing process of display modules, a temporary protective layer is required. Residual residue of this temporary protective layer can cause uneven brightness or color in the display module, affecting the display effect. Utility Model Content

[0003] To overcome the problems existing in related technologies, this disclosure provides a display module and an electronic device.

[0004] According to a first aspect of the present disclosure, a display module is provided, including a light-emitting layer and a functional layer. The light-emitting layer includes a first side for emitting light, and a protective layer can be disposed on the first side. At least a portion of the protective layer can be removed relative to the light-emitting layer. The functional layer is disposed on the first side for allowing light to pass through. The functional layer has a first refractive index, and the protective layer has a second refractive index. The first side includes a first region where the functional layer is disposed and a protective layer remains, and a second region where the functional layer is disposed but no protective layer remains. The deviation between the first refractive index and the second refractive index is less than or equal to a deviation threshold, such that the deviation between the refractive index of the first region and the refractive index of the second region is less than or equal to the deviation threshold.

[0005] In the technical solution of this embodiment, the light-emitting layer is provided with a first side for emitting light. A protective layer can be provided on the first side to protect the light-emitting layer. After the protection requirement is completed, the protective layer can be removed, but at least part of the protective layer may remain. In addition, a functional layer is also provided on the first side of the light-emitting layer. Light needs to pass through the functional layer first, and then part of the light passes through the first area with the remaining protective layer, while the other part of the light passes through the second area without the remaining protective layer. Since the light passing through the first area is refracted by the protective layer, and the light passing through the second area is not refracted by the protective layer, the light emitted from the first area and the light emitted from the second area have a large refractive difference. Based on this, a functional layer with a first refractive index is provided. The deviation between the first refractive index and the second refractive index of the protective layer is less than or equal to a deviation threshold. That is, the light passing through the functional layer in the second area and the light passing through the protective layer in the first area have similar refractive effects. This ensures that the light passing through the second area without the remaining protective layer is refracted by the functional layer, and the refractive effect is similar to that passing through the first area with the remaining protective layer. This compensates for the difference in the light propagation path between the first and second areas caused by the remaining protective layer, thereby improving the light emission uniformity of the display module and improving the display effect. Compared with related technologies where the light output effects of the first and second regions differ significantly, the technical solution of this disclosure provides a functional layer. The first refractive index of the functional layer is similar to the second refractive index of the residual protective layer. This can compensate for the difference in refraction of light when passing through the area with and without the residual protective layer, thereby maintaining the consistency of light refraction in different regions and improving the uniformity and effect of light output.

[0006] In some embodiments, the display module further includes a first structural layer having a light emission channel through which light passes; the functional layer is formed on the first side, and the first structural layer is formed on the side of the functional layer away from the light-emitting layer.

[0007] In the technical solution of this disclosure embodiment, the functional layer is formed on the first side, and the first structural layer is formed on the basis of the functional layer. The formation of the functional layer is not affected by the first structural layer, and the formation method of the functional layer is more flexible.

[0008] In some embodiments, the display module further includes a first structural layer formed by a preset layer located on the first side. The side of the preset layer opposite to the light-emitting layer forms a light-emitting channel through which the light passes. The portion of the preset layer surrounding the light-emitting channel forms the first structural layer, and the portion of the preset layer between the light-emitting channel and the light-emitting layer forms the functional layer.

[0009] In the technical solution of this disclosure embodiment, the functional layer is formed by the remaining part after the pre-layer is removed, that is, the functional layer and the first structural layer are an integral structure, the two have better structural consistency, and the two-layer structure of the first structural layer and the functional layer can be obtained in one layup, which simplifies the process and makes production easier.

[0010] In some embodiments, the functional layer and the light-emitting layer are stacked along a preset direction. Along the preset direction, the functional layer has a first size, and the first structural layer has a second size, wherein the first size is smaller than the second size.

[0011] In the technical solution of this disclosure embodiment, the functional layer has a smaller first size. On the one hand, this can save materials and reduce the weight of the display module; on the other hand, the functional layer is smaller in size than the light emission channel, increasing the proportion of the light emission channel so that the first structural layer can play its role.

[0012] In some embodiments, the display module further includes a second structural layer located on the side of the functional layer opposite to the light-emitting layer, and the functional layer is connected to the second structural layer; one of the functional layer and the second structural layer includes an organic material, and the other of the functional layer and the second structural layer includes an inorganic material.

[0013] In the technical solution of this disclosure embodiment, one of the second structural layer and the functional layer includes an inorganic material and the other includes an organic material. The interface between the organic material and the inorganic material can easily form a strong connection, thereby improving the connection stability between the functional layer and the second structural layer.

[0014] In some embodiments, the light-emitting layer and the functional layer are stacked along a preset direction, the functional layer includes a plurality of functional sub-layers, the plurality of functional sub-layers are stacked along the preset direction, at least one of the functional sub-layers includes an organic material, and at least another functional sub-layer includes an inorganic material.

[0015] The technical solution of this disclosure embodiment sets up multiple functional sub-layers, which may include organic materials or inorganic materials. Appropriate functional sub-layers can be selected according to requirements to meet different process and structural needs.

[0016] In some embodiments, the display module further includes a third structural layer disposed between the light-emitting layer and the functional layer, wherein the functional layer is respectively bonded to the third structural layer and the first structural layer.

[0017] The technical solution of this disclosure embodiment provides a third structural layer that isolates the functional layer from the light-emitting layer to protect the light-emitting layer. The functional layer is attached to both the third structural layer and the first structural layer, resulting in a flatter structure that helps optimize the light emission effect caused by the functional layer.

[0018] In some embodiments, the ratio of the first refractive index to the second refractive index is greater than or equal to 0.9 and less than or equal to 1.1.

[0019] The technical solution of this disclosure sets the ratio of the first refractive index and the second refractive index within a reasonable range. While meeting process requirements and facilitating processing, it improves the refractive index consistency of the residual portions of the functional layer and the protective layer, thereby optimizing the light emission effect.

[0020] In some embodiments, the first refractive index is greater than or equal to 1.48 and less than or equal to 1.52.

[0021] The technical solution of this disclosure sets the first refractive index within a reasonable range, which not only improves the forward emissivity of light, but also improves the mixing effect of light and enhances the uniformity of light, thereby obtaining a more suitable light emission effect.

[0022] According to a second aspect of the present disclosure, an electronic device is provided, including a device body and a display module according to any one of the first aspects, wherein the display module is connected to the device body.

[0023] The technical solution of this disclosure embodiment is that the display module of the electronic device includes a functional layer. The refractive index of the functional layer is similar to that of the residual part of the protective layer, which can compensate for the light refraction of the non-residual part, thereby maintaining the consistency of light refraction in different areas and improving the light emission uniformity and light emission effect.

[0024] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0026] Figure 1 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this disclosure;

[0027] Figure 2 A schematic diagram of the connection of the protective layer provided in the embodiments of this disclosure;

[0028] Figure 3 A schematic diagram illustrating how residual protective layer alters the light propagation path in an embodiment of this disclosure;

[0029] Figure 4 This is a schematic diagram of the structure of a display module with a functional layer provided in an embodiment of the present disclosure;

[0030] Figure 5 This is a schematic diagram showing the structure in which the functional layer and the first structural layer are respectively formed in a display module according to an embodiment of the present disclosure;

[0031] Figure 6 This is a schematic diagram of the structure in which the functional layer and the first structural layer are integrally formed in a display module according to an embodiment of the present disclosure;

[0032] Figure 7 This is a schematic diagram of the structure of a display module, which includes functional sub-layers, provided in an embodiment of this disclosure.

[0033] Figure label:

[0034] 100 - Display module; 110 - Light-emitting layer; 111 - First side; 112 - Light-emitting part; 120 - Functional layer; 121 - Functional sub-layer; 130 - First structural layer; 131 - Light emission channel; 140 - Second structural layer; 150 - Third structural layer; 200 - Device body; 300 - Protective layer; 310 - Protective body; 320 - Adhesive layer; 400 - First area; 500 - Second area; X - Preset direction; H1 - First dimension; H2 - Second dimension. Detailed Implementation

[0035] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the specific technical solutions of this disclosure will be further described in detail below with reference to the accompanying drawings of the embodiments of this disclosure. The following embodiments are used to illustrate this disclosure, but are not intended to limit the scope of this disclosure.

[0037] In the embodiments of this disclosure, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0038] Furthermore, in the embodiments of this disclosure, directional terms such as "up," "down," "left," and "right" are defined relative to the orientation in which the components are schematically placed in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the orientation in which the components are placed in the accompanying drawings.

[0039] In the embodiments disclosed herein, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0040] In embodiments of this disclosure, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0041] In this disclosure, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or illustration. Any embodiment or design described as "exemplary" or "for example" in this disclosure should not be construed as being more preferred or advantageous than other embodiments or designs. Rather, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0042] Reference Figure 1 This disclosure provides an electronic device, which includes a display module 100. The display module 100 is capable of outputting visual information such as images, videos, and text, thereby realizing human-computer interaction.

[0043] Electronic devices include fixed devices such as televisions, desktop or wall-mounted monitors, all-in-one computers, in-vehicle smart terminals, industrial control computers, and smart home products (smart access control, smart home terminals), as well as portable devices such as laptops, mobile phones, tablets, e-readers, handheld game consoles, digital cameras, virtual reality devices (VR or AR devices), and smartwatches.

[0044] Reference Figure 2 and Figure 3In some technical solutions, the display module 100 of the electronic device includes a light-emitting layer 110. During the processing of the display module 100, a protective layer 300 is needed to cover the light-emitting layer 110 to provide temporary protection. However, due to process limitations, the removal of the protective layer 300 in subsequent processes will leave residues, especially when the protective layer 300 covers the perforated area. Furthermore, if the protective layer 300 includes an adhesive layer 320, the adhesive layer 320 is prone to remain in the perforated area. This residual adhesive layer 320 will cause light refraction and deflection, altering the light propagation path and causing display differences between the areas with residual adhesive layer 320 and those without. Figure 3 As shown, the areas on both sides where the adhesive layer 320 remains have a larger angle of light deflection, while the area in the middle where no adhesive layer 320 remains has a smaller angle of light deflection. This results in uneven brightness or color of the display module 100, affecting the display effect.

[0045] Therefore, this disclosure also provides a display module 100, referring to... Figure 4 The display module 100 includes a light-emitting layer 110 and a functional layer 120. The light-emitting layer 110 includes a first side 111 for emitting light, and a protective layer 300 can be disposed on the first side 111. At least a portion of the protective layer 300 can be removed relative to the light-emitting layer 110. The functional layer 120 is used to allow light to pass through. The functional layer 120 is disposed on the first side 111. The functional layer 120 has a first refractive index, and the protective layer 300 has a second refractive index. The first side 111 includes a first region 400 where the functional layer 120 is disposed and the protective layer 300 remains, and a second region 500 where the functional layer 120 is disposed and the protective layer 300 does not remain. The deviation between the first refractive index and the second refractive index is less than or equal to a deviation threshold, so that the deviation between the refractive index of the first region 400 and the refractive index of the second region 500 is less than or equal to the deviation threshold.

[0046] In this embodiment of the present disclosure, the light-emitting layer 110 can generate light, which is emitted through the first side 111; the light-emitting layer 110 can generate light using materials such as fluorescence and phosphorescence; the light emission form of the light-emitting layer 110 can be single-layer light emission, doped light emission, stacked light emission, etc.; the color of the light can be achieved by adding a color filter to white light, or by using three primary colors to emit light independently.

[0047] In some examples, the light-emitting layer 110 includes multiple uniformly arranged light-emitting structures forming a light-emitting array. Each light-emitting structure includes multiple light-emitting parts 112. The light-emitting parts 112 in the same light-emitting structure can generate light of different wavelengths, and the light from the multiple light-emitting parts 112 in the light-emitting structure is mixed to generate light of the desired color. For example, the light-emitting structure includes an R light-emitting part 112, a G light-emitting part 112, and a B light-emitting part 112. The R light-emitting part 112 is used to generate red light; the G light-emitting part 112 is used to generate green light; and the B light-emitting part 112 is used to generate blue light.

[0048] It should be noted that the first side 111 of the light-emitting layer 110 is a directional concept. The component is set or connected to the first side 111. It can be that the component is in direct contact with the surface of the light-emitting layer 110; or, other structures are set between the component and the light-emitting layer 110, and the component and the light-emitting layer 110 are not in contact, and the two are indirectly connected.

[0049] In this embodiment, the protective layer 300 may be a layer structure covering the first side 111 of the light-emitting layer 110 during the processing of the display module 100. The protective layer 300 may be a temporary protective structure during handling; alternatively, the protective layer 300 may be a protective structure during processing, such as photoresist used for temporary shielding during photolithography, or a temporary support structure, reflective structure, or encapsulation structure during processing. Here, the removal of the protective layer 300 may be achieved by mechanical force, chemical removal, photolithographic removal, etc., and this embodiment does not limit the methods used.

[0050] The protective layer 300 can be a single-layer or multi-layer structure. In some examples, the protective layer 300 includes a protective body 310 and an adhesive layer 320, with the protective body 310 connected to the first side 111 of the light-emitting layer 110 via the adhesive layer 320. After the protective layer 300 is removed, the adhesive layer 320 may remain on the first side 111 of the light-emitting layer 110 due to process issues.

[0051] In some examples, the protective layer 300 is a single-layer structure, and the deviation between the first refractive index of the functional layer 120 and the second refractive index of the protective layer 300 is less than or equal to a deviation threshold. In other examples, the protective layer 300 is a multi-layer structure, and the deviation between the first refractive index of the functional layer 120 and the second refractive index of a possible residual layer in the protective layer 300 is less than or equal to a deviation threshold. For example, the deviation between the first refractive index of the functional layer 120 and the second refractive index of the adhesive layer 320 is less than or equal to a deviation threshold.

[0052] In this embodiment of the disclosure, the deviation between the first refractive index and the second refractive index can be an absolute deviation, which is the absolute value of the difference between the first refractive index and the second refractive index. The deviation threshold can be greater than or equal to 0 and less than or equal to 0.3. For example, the values ​​of the first refractive index and the second refractive index are equal, and the difference between them is 0; or, the absolute value of the difference between the first refractive index and the second refractive index is less than or equal to 0.3, such as 0.05, 0.10, 0.15, 0.20, 0.25, 0.30, etc.

[0053] In some examples, the deviation between the first refractive index and the second refractive index can be a relative deviation, which is the ratio of the first refractive index to the second refractive index. The deviation threshold can be greater than or equal to 0.9 and less than or equal to 1.1. For example, the deviation thresholds are 0.90, 0.95, 1.00, 1.05, 1.10, etc.

[0054] It should be noted that the deviation threshold between the first and second refractive indices is also related to the errors of the detection device, manufacturing errors, etc.

[0055] The technical solution provided in this embodiment of the present disclosure is that the light-emitting layer 110 is provided with a first side 111 for emitting light, and a protective layer 300 can be provided on the first side 111. The protective layer 300 provides protection for the light-emitting layer 110. After the protection requirement is completed, the protective layer 300 can be removed, but there may be residual protective layer after at least part of the protective layer 300 is removed.

[0056] Furthermore, a functional layer 120 is also provided on the first side 111 of the light-emitting layer 110. The functional layer 120 is located between the light-emitting layer 110 and the protective layer 300. Light needs to pass through the functional layer 120 first, then part of the light passes through the first region 400 where the protective layer 300 remains, and the other part of the light passes through the second region 500 where the protective layer 300 does not remain. Since the light in the first region 400 is refracted after passing through the functional layer 120, while the light passing through the second region 500 is not refracted by the protective layer 300, the light emitted from the first region 400 and the light emitted from the second region 500 have a significant difference. Based on this, a first refractive index is provided. The functional layer 120 has a first refractive index that deviates from the second refractive index of the remaining portion of the protective layer 300 by less than or equal to a deviation threshold. This means that the refraction effect of light passing through the functional layer 120 in the second region 500 is similar to that of light passing through the protective layer 300 in the first region. This allows light passing through the second region 500 without the remaining protective layer 300 to be refracted by the functional layer 120, and the refraction effect is similar to that of light passing through the first region 400 with the remaining protective layer 300. This compensates for the difference in light propagation paths between the first region 400 and the second region 500 caused by the remaining protective layer 300, thereby improving the light emission uniformity of the display module 100 and enhancing the display effect.

[0057] Compared with related technologies, where the residual portion of the protective layer 300 leads to poor light output, the technical solution of this disclosure embodiment, by setting a functional layer 120, whose first refractive index is similar to the second refractive index of the residual portion of the protective layer 300, can compensate for the difference in light refraction when light passes through the area with and without the residual protective layer, thereby maintaining the consistency of light refraction in different areas and improving the uniformity and effect of light output.

[0058] In this embodiment of the disclosure, the display module 100 can be an OLED (Organic Light-Emitting Diode) module, or other types of display modules 100, such as an LCD (Liquid Crystal Display) module, an LED (Light-Emitting Diode) module, a QLED module, an EInk (Electronic Ink) module, etc. In some examples, the display module 100 is an OLED module.

[0059] In some examples, the display module 100 uses a micro-lens focusing method, which can improve the brightness at a normal viewing angle under low power consumption conditions, thus helping to reduce power consumption. Moreover, the brightness decays relatively quickly when viewed from a wide viewing angle, which can meet the needs of customers in different scenarios.

[0060] Reference Figure 4 , Figure 5 and Figure 6 In some embodiments of this disclosure, the display module 100 further includes a first structural layer 130, which forms a light emission channel 131 through which light passes.

[0061] In this embodiment of the disclosure, the first structural layer 130 may be an extraction improvement layer (EIL), a light scattering layer (LSL), a passivation layer (PVX), or a photo-acrylic spacer (PAS). In some examples, the first structural layer 130 is a PAS layer, which has the functions of supporting and maintaining planarization, constraining the light path, and adjusting the light.

[0062] In some examples, the first structural layer 130 has a light emission channel 131, which is provided corresponding to the light-emitting part 112, and each light-emitting part 112 is provided with a corresponding light emission channel 131. The inner wall of the light emission channel 131 can serve as a reflective surface to reflect at least a portion of the light rays incident on the reflective surface. In some examples, the size of the light emission channel 131 gradually increases along the light emission direction.

[0063] Here, the protective layer 300 can cover the light emission channel 131 of the first structural layer 130. Since the light emission channel 131 is relatively narrow, the adhesive layer 320 of the protective layer 300 is easily attached to the bottom wall of the light emission channel 131 and is difficult to remove, thus forming a residue.

[0064] Reference Figure 5 In some embodiments, the functional layer 120 is formed on the first side 111, and the first structural layer 130 is formed on the side of the functional layer 120 away from the light-emitting layer 110.

[0065] Specifically, the functional layer 120 is formed on the basis of the light-emitting layer 110, and the first structural layer 130 is formed on the basis of the functional layer 120. Corresponding to the processing, the light-emitting layer 110 is formed first, then the functional layer 120 is formed on the basis of the light-emitting layer 110, and then the first structural layer 130 is formed on the integration of the functional layer 120.

[0066] The technical solution provided in this embodiment of the disclosure is that the functional layer 120 is formed on the first side 111, and the first structural layer 130 is formed on the basis of the functional layer 120. The formation of the functional layer 120 is not affected by the first structural layer 130, and the formation method of the functional layer 120 is more flexible.

[0067] Reference Figure 6 In other embodiments, the first structural layer 130 is formed by a pre-set layer located on the first side 111. The side of the pre-set layer opposite to the light-emitting layer 110 is dematerialized to form a light-emitting channel 131 through which light passes. The portion of the pre-set layer surrounding the light-emitting channel 131 forms the first structural layer 130, and the portion of the pre-set layer between the light-emitting channel 131 and the light-emitting layer 110 forms a functional layer 120.

[0068] In this embodiment, the pre-set layer is formed on the basis of the light-emitting layer 110. A light-emitting channel 131 is formed on the pre-set layer by means of material removal such as laser etching and chemical etching. The opening of the light-emitting channel 131 is located on the side of the pre-set layer away from the light-emitting layer 110, and the light-emitting channel 131 does not penetrate the pre-set layer. That is, a layer is left as a functional layer 120 during the material removal process, which can be achieved by means of PAS layer half-etching, etc.

[0069] The technical solution provided in this embodiment is that the functional layer 120 is formed by the remaining part after the pre-layer is removed, that is, the functional layer 120 and the first structural layer 130 are an integral structure, the two have better structural consistency, and the two-layer structure of the first structural layer 130 and the functional layer 120 can be obtained in one layup, which simplifies the process and makes production easier.

[0070] Reference Figure 4In some embodiments of this disclosure, the functional layer 120 and the light-emitting layer 110 are stacked along a preset direction X. Along the preset direction X, the functional layer 120 has a first size H1, and the first structural layer 130 has a second size H2. The first size H1 is smaller than the second size H2.

[0071] In this embodiment, the first dimension H1 is the thickness of the functional layer 120. When the thickness of the functional layer 120 is uniform, the first dimension H1 is the dimension of any position of the functional layer 120 along the preset direction X. When the thickness of the functional layer 120 is non-uniform, the first dimension H1 is the maximum dimension of the functional layer 120 along the preset direction X. The second dimension H2 is the thickness of the first structural layer 130. When the thickness of the first structural layer 130 is uniform, the second dimension H2 is the dimension of any position of the first structural layer 130 along the preset direction X. When the thickness of the first structural layer 130 is non-uniform, the second dimension H2 is the maximum dimension of the first structural layer 130 along the preset direction X.

[0072] In some examples, the ratio of the first dimension H1 to the second dimension H2 is greater than or equal to 0.1 and less than or equal to 0.5, for example, the ratio of the first dimension H1 to the second dimension H2 is 0.1, 0.2, 0.3, 0.4, 0.5, etc.

[0073] In some examples, the first size H1 is in the nanometer scale, that is, the first size H1 is greater than 0 nanometers and less than 1 micrometer. The first size H1 can be in the tens of nanometers scale (greater than 0 nanometers and less than 100 nanometers) or the first size H1 can be in the hundreds of nanometers scale (greater than or equal to 100 nanometers and less than 1000 nanometers).

[0074] The technical solution provided in this embodiment has a smaller first size H1 for the functional layer 120. On the one hand, this can save materials and reduce the weight of the display module 100. On the other hand, the functional layer 120 is smaller in size than the light emission channel 131, which increases the proportion of the light emission channel 131 so that the first structural layer 130 can play its role.

[0075] Reference Figure 4 , Figure 5 , Figure 6 and Figure 7 In some embodiments of this disclosure, the display module 100 further includes a second structural layer 140, which is located on the side of the functional layer 120 away from the light-emitting layer 110, and the functional layer 120 is connected to the second structural layer 140; one of the functional layer 120 and the second structural layer 140 includes an organic material, and the other of the functional layer 120 and the second structural layer 140 includes an inorganic material.

[0076] In this embodiment of the disclosure, the second structural layer 140 can be one or more combinations of a refractive layer, a polarizing layer, an encapsulation layer, a touch layer, and a cover layer. In some examples, the second structural layer 140 is a high-refractive-index refractive layer with a refractive index greater than or equal to 1.7 and less than or equal to 1.9. The refractive layer can reduce total internal reflection, allowing more light to couple from the light-emitting layer 110 to the outside of the display module 100.

[0077] In some examples, the second structural layer 140 is made of organic materials; in other examples, the second structural layer 140 is made of inorganic materials; and in still other examples, the second structural layer 140 is made of a mixture of organic and inorganic materials.

[0078] In some examples, the functional layer 120 is made of organic materials; in other examples, the functional layer 120 is made of inorganic materials; and in still other examples, the functional layer 120 is made of a mixture of organic and inorganic materials.

[0079] In some examples, the second structural layer 140 is made of organic materials and the functional layer 120 is made of inorganic materials; in other examples, the second structural layer 140 is made of inorganic materials and the functional layer 120 is made of organic materials.

[0080] In some examples, the organic materials of the second structural layer 140 and the functional layer 120 include polyfluorene derivatives, phosphorescent iridium complexes, metal complexes, conjugated polymers, etc. The inorganic materials of the second structural layer 140 and the functional layer 120 include indium tin oxide, molybdenum trioxide, lithium fluoride, aluminum oxide, silicon nitride, etc. The specific materials of the second structural layer 140 and the functional layer 120 are not limited in the embodiments of this disclosure.

[0081] The technical solution provided in this embodiment includes an inorganic material in one of the second structural layer 140 and the functional layer 120, and an organic material in the other. The bonding surface between the organic and inorganic materials can easily form a strong connection, thereby improving the connection stability between the functional layer 120 and the second structural layer 140.

[0082] Reference Figure 7 In some embodiments of this disclosure, the light-emitting layer 110 and the functional layer 120 are stacked along a preset direction X. The functional layer 120 includes a plurality of functional sub-layers 121, which are stacked along the preset direction X. At least one functional sub-layer 121 includes an organic material, and at least another functional sub-layer 121 includes an inorganic material.

[0083] In some examples, the functional sublayer 121 closest to the second structural layer 140 is made of organic material, and the functional sublayer 121 closest to the light-emitting layer 110 is made of inorganic material; in other examples, the functional sublayer 121 closest to the second structural layer 140 is made of inorganic material, and the functional sublayer 121 closest to the light-emitting layer 110 is made of organic material; in still other examples, both the functional sublayer 121 closest to the second structural layer 140 and the functional sublayer 121 closest to the light-emitting layer 110 are made of organic material; and in yet other examples, both the functional sublayer 121 closest to the second structural layer 140 and the functional sublayer 121 closest to the light-emitting layer 110 are made of inorganic material.

[0084] In some examples, multiple functional sublayers 121 have the same size along a preset direction X, while in other examples, multiple functional sublayers 121 have different sizes along the preset direction X.

[0085] In some examples, the organic materials of functional sublayer 121 include polyfluorene derivatives, phosphorescent iridium complexes, metal complexes, conjugated polymers, etc. The inorganic materials of functional sublayer 121 include indium tin oxide, molybdenum trioxide, lithium fluoride, aluminum oxide, silicon nitride, etc. The specific materials of functional sublayer 121 are not limited in the embodiments of this disclosure.

[0086] In some embodiments of this disclosure, the functional layer 120 may include functional units, and multiple functional units are sequentially arranged along the extension plane of the light-emitting layer 110, with the extension plane of the light-emitting layer 110 perpendicular to a predetermined direction X. The multiple functional units may be made of the same or different materials, or may be configured with the same or different structures.

[0087] The technical solution provided in this disclosure provides a plurality of functional sub-layers 121, which may include organic materials or inorganic materials. Appropriate functional sub-layers 121 can be selected according to requirements to meet different process and structural needs.

[0088] Reference Figure 4 , Figure 5 , Figure 6 and Figure 7 In some embodiments of this disclosure, the display module 100 further includes a third structural layer 150, which is disposed between the light-emitting layer 110 and the functional layer 120, and the functional layer 120 is respectively bonded to the third structural layer 150 and the first structural layer 130.

[0089] In some embodiments, the third structural layer 150 may be one or a combination of multiple layers selected from Thin Film Encapsulation (TFE), Hole Injection Layer (HIL), Hole Transport Layer (HTL), and Electron Blocking Layer (EBL). For example, the third structural layer 150 may be a TFE layer, capable of preventing moisture and other substances from penetrating into the light-emitting layer 110, thereby providing protection for the light-emitting layer 110.

[0090] In this embodiment of the disclosure, the third structural layer 150 may include one or more structural sublayers, which are sequentially stacked along a predetermined direction X. The structural sublayers may be made of organic or inorganic materials. For example, some structural sublayers of the third structural layer 150 are made of inorganic materials; another portion is made of organic materials. In some examples, the structural sublayer furthest from the light-emitting layer 110 in the third structural layer is an inorganic material layer.

[0091] In some examples, the organic materials of the structural sublayer include polyfluorene derivatives, phosphorescent iridium complexes, metal complexes, conjugated polymers, etc. The inorganic materials of the structural sublayer include indium tin oxide, molybdenum trioxide, lithium fluoride, aluminum oxide, silicon nitride, etc. The embodiments of this disclosure do not limit the specific materials of the structural sublayer.

[0092] In some examples, the functional layer 120 and the third structural layer 150 are integrally formed, that is, the structural sub-layer of the third structural layer 150 furthest from the light-emitting layer 110 forms the functional layer 120; in other examples, the functional layer 120 and the third structural layer 150 are formed separately, with the third structural layer 150 formed on the basis of the light-emitting layer 110 and the functional layer 120 formed on the basis of the third structural layer 150.

[0093] The technical solution provided in this embodiment of the present disclosure provides a third structural layer 150, which can isolate the functional layer 120 from the light-emitting layer 110 in order to provide protection for the light-emitting layer 110. The functional layer 120 is attached to the third structural layer 150 and the first structural layer 130 respectively, resulting in a flatter structure that helps to optimize the light emission effect caused by the functional layer 120.

[0094] In some embodiments of this disclosure, the ratio of the first refractive index to the second refractive index is greater than or equal to 0.9 and less than or equal to 1.1.

[0095] In this embodiment, the ratio of the first refractive index to the second refractive index is close to 1.0, and the refractive indices of the functional layer 120 and the residual portion of the protective layer 300 are similar or even equal, which can improve the effect of the functional layer 120 and improve the uniformity of light emission. The ratio of the first refractive index to the second refractive index is small or large, which has lower precision requirements and lower requirements for processing technology. It also allows for a wider range of available materials for the functional layer 120, which is helpful for the processing and production of the functional layer 120.

[0096] In some examples, the ratio of the first refractive index to the second refractive index is greater than or equal to 0.9 and less than or equal to 1.0, for example, 0.90, 0.93, 0.95, 0.96, 0.99, 1.00, etc.; in other examples, the ratio of the first refractive index to the second refractive index is greater than or equal to 1.0 and less than or equal to 1.1, for example, 1.00, 1.03, 1.05, 1.06, 1.09, 1.10, etc.; in still other examples, the ratio of the first refractive index to the second refractive index is greater than or equal to 0.95 and less than or equal to 1.05, for example, 0.95, 0.98, 1.00, 1.03, 1.05, etc.

[0097] The technical solution provided in this disclosure sets the ratio of the first refractive index and the second refractive index within a reasonable range. While meeting process requirements and facilitating processing, it improves the refractive index consistency of the residual portion of the functional layer 120 and the protective layer 300, thereby optimizing the light emission effect.

[0098] In some embodiments of this disclosure, the first refractive index is greater than or equal to 1.48 and less than or equal to 1.52.

[0099] In this embodiment, a larger value for the first refractive index results in a greater degree of deflection of light as it passes through the functional layer 120, which helps in light mixing. A smaller value for the second refractive index results in a smaller deflection of light as it passes through the functional layer 120, which helps in the forward emission of light and improves the brightness of the display module 100 at the viewing angle.

[0100] In some examples, the first refractive index is greater than or equal to 1.48 and less than or equal to 1.50, such as 1.48, 1.49, 1.50, etc.; in other examples, the first refractive index is greater than or equal to 1.50 and less than or equal to 1.52, such as 1.50, 1.51, 1.52, etc.; and in still other examples, the first refractive index is greater than or equal to 1.49 and less than or equal to 1.51, such as 1.49, 1.50, 1.51, etc.

[0101] The technical solution provided in this disclosure sets the first refractive index within a reasonable range, which not only improves the forward emissivity of light but also enhances the mixing effect of light and improves the uniformity of light, thereby obtaining a more suitable light emission effect.

[0102] Reference Figure 1 In some embodiments of this disclosure, the electronic device includes a device body 200 and a display module 100 of this disclosure, wherein the display module 100 is connected to the device body 200.

[0103] In this embodiment, the device body 200 may include a housing, a power supply component, a control component (including a processor, circuit board, etc.), a sensor component, and an interaction component. The housing houses the power supply component and control component; the power supply component includes a battery and a charging structure; the control component includes a circuit board and a processor; the sensor component includes a light sensor, a proximity sensor, and a gravity sensor; and the interaction component includes buttons, a touchpad, a speaker, and a microphone. The touchpad may be integrated into the display module 100.

[0104] In some examples, the device body 200 is provided with a single display module 100 located on one side of the device body 200; in other examples, the device body 200 is provided with multiple display modules 100 located on opposite or adjacent sides of the device body 200.

[0105] In some examples, the device body 200 includes multiple relatively movable sub-bodies, each of which is provided with a display module 100, or the display module 100 extends to different sub-bodies and can be folded or unfolded according to the movement of the sub-bodies.

[0106] The technical solution provided in this disclosure is that the display module 100 of the electronic device includes a functional layer 120. The refractive index of the functional layer 120 is similar to that of the residual portion of the protective layer 300, which can compensate for the light refraction of the non-residual portion, thereby maintaining the consistency of light refraction in different areas and improving the light emission uniformity and light emission effect.

[0107] Reference Figure 4 , Figure 5 , Figure 6 and Figure 7In one possible embodiment of this disclosure, the display module 100 includes a light-emitting layer 110, a third structural layer 150, a functional layer 120, a first structural layer 130, and a second structural layer 140 arranged sequentially. The light-emitting layer 110 includes a plurality of uniformly arranged light-emitting structures, each of which includes an R light-emitting part 112, a G light-emitting part 112, and a B light-emitting part 112. The third structural layer 150 is a TFE layer. The functional layer 120 and the first structural layer 130 can be integrally formed or formed separately. The second structural layer 140 is a high-refractive-index organic material layer, and the functional layer 120 is an inorganic material layer. During the production of the display module 100, if the second structural layer 140 is not laid, the protective layer 300 can cover the side of the functional layer 120 and the first structural layer 130 away from the light-emitting layer 110. The adhesive layer 320 of the protective layer 300 is bonded to the functional layer 120 and the first structural layer 130. If the protective layer 300 is removed, part of the adhesive layer 320 may adhere to the first structural layer 130 or the functional layer 120. The deviation between the first refractive index of the functional layer 120 and the second refractive index of the adhesive layer 320 is less than or equal to the deviation threshold. The functional layer 120 can refract light uniformly to compensate for the display unevenness caused by the residue of the adhesive layer 320.

[0108] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims.

[0109] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A display module, characterized by include: The light-emitting layer includes a first side for emitting light, and the first side is capable of having a protective layer, at least a portion of which can be removed relative to the light-emitting layer; A functional layer for allowing light to pass through is disposed on the first side. The functional layer has a first refractive index, and the protective layer has a second refractive index. The first side includes a first region where the functional layer is disposed and the protective layer remains, and a second region where the functional layer is disposed but the protective layer does not remain. The deviation between the first refractive index and the second refractive index is less than or equal to a deviation threshold, such that the deviation between the refractive index of the first region and the refractive index of the second region is less than or equal to the deviation threshold.

2. The display module of claim 1, wherein, It also includes a first structural layer, which forms a light emission channel through which the light rays pass; The functional layer is formed on the first side, and the first structural layer is formed on the side of the functional layer away from the light-emitting layer.

3. The display module of claim 1, wherein, It also includes a first structural layer, which is formed by a pre-set layer located on the first side. The side of the pre-set layer opposite to the light-emitting layer is dematerialized to form a light-emitting channel, through which the light passes. The portion of the preset layer that surrounds the light emission channel forms the first structural layer, and the portion of the preset layer located between the light emission channel and the light-emitting layer forms the functional layer.

4. The display module of claim 2 or 3, wherein, The functional layer and the light-emitting layer are stacked along a preset direction. Along the preset direction, the functional layer has a first size, and the first structural layer has a second size. The first size is smaller than the second size.

5. The display module of any one of claims 1 to 3, wherein, It also includes a second structural layer, which is located on the side of the functional layer away from the light-emitting layer, and the functional layer is connected to the second structural layer; One of the functional layer and the second structural layer comprises an organic material, and the other of the functional layer and the second structural layer comprises an inorganic material.

6. The display module of any one of claims 1-3, wherein, The light-emitting layer and the functional layer are stacked along a preset direction. The functional layer includes multiple functional sub-layers, which are stacked along the preset direction. At least one functional sub-layer includes an organic material, and at least another functional sub-layer includes an inorganic material.

7. The display module of claim 2 or 3, wherein, It also includes a third structural layer, which is disposed between the light-emitting layer and the functional layer, and the functional layer is respectively attached to the third structural layer and the first structural layer. 8.The display module of any one of claims 1-3, wherein, The ratio of the first refractive index to the second refractive index is greater than or equal to 0.9 and less than or equal to 1.

1.

9. The display module of any one of claims 1-3, wherein, The first refractive index is greater than or equal to 1.48 and less than or equal to 1.

52.

10. An electronic device, comprising: include: Equipment body; The display module according to any one of claims 1 to 9, wherein the display module is connected to the device body.

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