A display panel

Abstract

This disclosure provides a display panel, including: a substrate layer, a driving circuit layer, a pixel layer, an encapsulation layer, a functional layer, and a filter layer; the functional layer includes: a light extraction structure disposed on the encapsulation layer, the projection of the light extraction structure on the substrate layer covering the projection of the light-emitting unit on the substrate layer, the light extraction structure being covered with a first insulating material, the light refractive index of the light extraction structure being greater than the light refractive index of the first insulating material; the projections of a first touch metal structure and a second touch metal structure on the substrate layer overlapping, the first touch metal structure being away from the filter layer, the second touch metal structure being close to the filter layer, the second touch metal structure being covered with a first insulating material, the first insulating material being an organic material; the filter layer includes: a color filter projecting onto the substrate layer covering the projection of the light-emitting unit on the substrate layer, a black matrix projecting onto the substrate layer covering the projection of the second touch metal structure on the substrate layer, the color filter and the black matrix being covered with a second insulating material.

Description

Technical Field

[0001] This disclosure relates to the field of displays, and more particularly to a display panel. Background Technology

[0002] As OLED technology matures, the need for power consumption reduction and bending resistance in display panels has become a new development direction. The light efficiency and viewing angle of existing display panels still need further improvement. Summary of the Invention

[0003] In view of this, the present disclosure proposes a display panel to solve the following problems of the prior art: the light effect and viewing angle of existing display panels still need to be further improved.

[0004] On one hand, this disclosure provides a display panel comprising: a substrate layer, a driving circuit layer, a pixel layer, an encapsulation layer, a functional layer, and a filter layer; the pixel layer includes: a pixel defining layer and a light-emitting unit; the light-emitting unit is connected to a driving circuit of the driving circuit layer, the driving circuit layer is disposed on the substrate layer, and the encapsulation layer is disposed on the pixel layer; the functional layer includes: a light extraction structure, a first touch metal structure, and a second touch metal structure; the light extraction structure is disposed on the encapsulation layer, the projection of the light extraction structure on the substrate layer covers the projection of the light-emitting unit on the substrate layer, the light extraction structure is covered with a first insulating material, and the refractive index of the light extraction structure is greater than the refractive index of the first insulating material; the first... The projections of a first touch metal structure and a second touch metal structure on the substrate layer at least partially overlap. The first touch metal structure is away from the filter layer, and the second touch metal structure is close to the filter layer. At least one first insulating material is disposed between the first touch metal structure and the second touch metal structure. The first insulating material is an organic material. The filter layer includes a color filter and a black matrix. The projection of the color filter on the substrate layer covers the projection of the light-emitting unit on the substrate layer. The black matrix is ​​disposed adjacent to the color filter. The projection of the black matrix on the substrate layer covers the projection of the second touch metal structure on the substrate layer. The color filter and the black matrix are covered with a second insulating material.

[0005] In some embodiments, the light extraction structure is disposed in a first insulating layer, the first touch metal structure is disposed in a second insulating layer, and the second touch metal structure is disposed in a third insulating layer, wherein the first insulating layer, the second insulating layer, and the third insulating layer are all composed of the first insulating material.

[0006] In some embodiments, the light extraction structure is disposed in a first insulating layer, the first touch metal structure is disposed in a second insulating layer, the second touch metal structure is disposed on the second insulating layer, and the black matrix covers the second touch metal structure, wherein the first insulating layer and the second insulating layer are composed of the first insulating material.

[0007] In some embodiments, the first touch metal structure is disposed in the first insulating layer, and both the light extraction structure and the second touch metal structure are disposed in the second insulating layer, wherein the first insulating layer and the second insulating layer are both composed of the first insulating material.

[0008] In some embodiments, the light extraction structure and the first touch metal structure are both disposed in the first insulating layer, and the second touch metal structure is disposed in the second insulating layer, wherein the first insulating layer and the second insulating layer are both composed of the first insulating material.

[0009] In some embodiments, the light extraction structure and the first touch metal structure are both disposed in the first insulating layer, the second touch metal structure is disposed on the first insulating layer, and the black matrix covers the second touch metal structure, wherein the first insulating layer is composed of the first insulating material.

[0010] In some embodiments, the material used for the photoextraction structure is applied to the first touch metal structure; or, the first insulating material is applied to the first touch metal structure, and the surface of the photoextraction structure in contact with the first insulating material is provided with a predetermined pattern.

[0011] In some embodiments, a first inorganic layer is further disposed on the encapsulation layer.

[0012] In some embodiments, the light extraction structure has a raised structure with the raised direction facing the filter layer, adjacent light extraction structures are independent of each other, and the projection of the color filter on the substrate layer covers the projection of the light extraction structure on the substrate layer; or, the light extraction structure has a raised structure with the raised direction facing the encapsulation layer, and adjacent light extraction structures are connected to each other, the surface of the continuous light extraction structure in contact with the first insulating material is parallel to the first surface of the encapsulation layer, and the first surface is the side close to the filter layer.

[0013] On the other hand, embodiments of this disclosure provide an electronic device, including: a display panel as described in any embodiment of this disclosure.

[0014] The functional layer of this embodiment is provided with a light extraction structure. The refractive index of the light extraction structure is greater than that of the first insulating material covering it. Therefore, the light output from the light-emitting unit to the filter layer can be increased. Furthermore, the first insulating material covering the metal that enables the touch function is all made of organic material. This not only improves the display panel's resistance to compression and bending, but also, since the light extraction structure is set in the functional layer corresponding to the existing first insulating material, the combination of the high-refractive-index material and the organic material of the light extraction structure can realize the refraction or reflection of light. Compared with the existing process, only one mask patterning step is needed to significantly improve the light extraction efficiency of the display panel. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A cross-sectional structural diagram of the display panel provided in the first embodiment of this disclosure;

[0017] Figure 2 A cross-sectional structural diagram of the display panel provided in the second embodiment of this disclosure;

[0018] Figure 3 A cross-sectional structural schematic diagram of a display panel provided in the third embodiment of this disclosure;

[0019] Figure 4 A cross-sectional structural diagram of the display panel provided in the fourth embodiment of this disclosure;

[0020] Figure 5 A cross-sectional structural diagram of a display panel provided in the fifth embodiment of this disclosure;

[0021] Figure 6 A cross-sectional structural diagram of a display panel provided in the sixth embodiment of this disclosure;

[0022] Figure 7 A cross-sectional structural schematic diagram of a display panel provided in the seventh embodiment of this disclosure;

[0023] Figure 8 Design schematic of the photoextraction structure provided in the first embodiment of this disclosure Figure 1 ;

[0024] Figure 9 This is a schematic cross-sectional outline of the photoextraction structure provided in the first embodiment of this disclosure;

[0025] Figure 10 Design schematic of the photoextraction structure provided in the first embodiment of this disclosure Figure 2 .

[0026] Figure label:

[0027] Substrate layer 1, driving circuit layer 2, pixel layer 3, encapsulation layer 4, functional layer 5, filter layer 6;

[0028] Color filter CF, black matrix BM, pixel delimiting layer PDL, light-emitting unit EL, light extraction structure GCQ, first touch metal structure M1, second touch metal structure M2, first insulating material OC1, second insulating material OC2, first insulating layer 1OC1, second insulating layer 2OC1, third insulating layer 3OC1.

[0029] First buffer layer, first insulating layer GI1, second insulating layer GI2, interlayer dielectric layer ILD, planarization layer PLN, polysilicon layer active, first vapor deposition layer CVD1, inkjet printing layer IJP, and second vapor deposition layer CVD2. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0031] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0032] To keep the following description of the embodiments of this disclosure clear and concise, detailed descriptions of known functions and known components are omitted.

[0033] Example 1

[0034] The first embodiment of this disclosure provides a display panel, the cross-sectional structure of which is shown in the figure below. Figure 1 As shown, it includes:

[0035] Substrate layer 1, driving circuit layer 2, pixel layer 3, encapsulation layer 4, functional layer 5, filter layer 6;

[0036] The pixel layer includes: pixel definition layer (PDL) and light-emitting unit (EL);

[0037] The light-emitting unit is connected to the driving circuit of the driving circuit layer, which is disposed on the substrate layer, and the encapsulation layer is disposed on the pixel layer.

[0038] The functional layer includes: a light extraction structure GCQ, a first touch metal structure M1, and a second touch metal structure M2;

[0039] The light extraction structure is disposed on the encapsulation layer. The projection of the light extraction structure on the substrate layer covers the projection of the light-emitting unit on the substrate layer. The light extraction structure is covered with a first insulating material OC1. The light refractive index of the light extraction structure is greater than the light refractive index of the first insulating material. The projections of the first touch metal structure and the second touch metal structure on the substrate layer at least partially overlap. The first touch metal structure is far away from the filter layer, and the second touch metal structure is close to the filter layer. The first insulating material is disposed between at least the first touch metal structure and the second touch metal structure. The first insulating material is an organic material.

[0040] The filter layer includes: a color filter (CF) and a black matrix (BM);

[0041] The projection of the color filter on the substrate layer covers the projection of the light-emitting unit on the substrate layer. The black matrix is ​​disposed adjacent to the color filter. The projection of the black matrix on the substrate layer covers the projection of the second touch metal structure on the substrate layer. The color filter and the black matrix are covered with a second insulating material OC2.

[0042] The aforementioned light extraction structure has a raised structure. In the embodiments disclosed herein, its cross-section is schematically a trapezoidal structure. The raised direction of the raised structure faces the filter layer. Adjacent light extraction structures are independent of each other. The projection of the color filter on the substrate layer covers the projection of the light extraction structure on the substrate layer. That is, the projection of the first surface of the light extraction structure in contact with the encapsulation layer on the substrate layer is greater than the projection of the second surface of the light extraction structure in contact with the first insulating material (the side parallel to the first surface) on the substrate layer.

[0043] When the aforementioned protruding structure is a trapezoidal structure in the embodiments of this disclosure, such as... Figure 8As shown, its structural parameters follow the following rules: 80° > α > 50°, b > 0um (that is, the photoextraction structure needs to be expanded outward compared to the PDL opening). When looking from the filter layer towards the substrate layer, the photoextraction structure needs to be expanded outward at the same distance as the pixel defining layer PDL opening. Of course, in actual production, due to reasons such as overlay (deviation in the process), it is difficult for the actual product to achieve a completely equal distance, so this actual situation is not considered here. The height h is mainly limited by the coverage of the photoextraction structure by the first insulating material. That is, the thickness H of the first insulating material covering the photoextraction structure must be greater than the thickness h of the photoextraction structure. The size of h depends on the effect to be achieved, and generally needs to be greater than 1um.

[0044] After the actual process is completed, the profile of the photoextraction structure is not a strictly straight line; in most cases, it resembles... Figure 9 As shown, from a simulation perspective, with less L-decay sacrifice, the experimentally superior light extraction efficiency should adopt the gentler arc profile 1 (profile1) shown in the figure. In the embodiments of this disclosure, simple geometric shapes such as straight lines or trapezoids are used instead of profile1 or profile2.

[0045] During the design process, it is also necessary to ensure that the projection of the black matrix onto the substrate layer does not overlap with the projection of the light extraction structure onto the substrate layer, such as... Figure 10 As shown, the C value is guaranteed to be greater than 0um to ensure that the light after the large-angle linear transformation is not absorbed by the black matrix BM.

[0046] The design considerations described above will not be repeated in the following embodiments. Those skilled in the art can refer to these embodiments.

[0047] Figure 1 The substrate layer, pixel layer, and driving circuit layer in this display are the same as or similar to the structure of existing display panels. Those skilled in the art can make adaptive designs and adjustments according to actual needs. For example, the substrate layer may include a multilayer substrate; the driving circuit layer includes at least a first planarization layer PLN1, a second planarization layer PLN2, an interlayer dielectric layer ILD, a first driving insulating layer GI1, a second driving insulating layer GI2, a first buffer layer, and layers such as Gate, SD (source / drain), and active polysilicon layer disposed between each layer. The gate and other layer settings of this driving circuit layer can refer to existing structures and will not be described in detail here.

[0048] The aforementioned pixel layer includes a pixel defining layer (PDL) and a light-emitting unit (EL). The light-emitting unit includes an anode layer, a light-emitting material layer, a cathode layer, and other structures. The anode layer of the light-emitting unit is connected to the driving circuit of the driving circuit layer, and an encapsulation layer is provided on the cathode layer of the pixel layer.

[0049] The aforementioned encapsulation layer includes a first vapor deposition layer (CVD1), an inkjet printing layer (IJP), and a second vapor deposition layer (CVD2), which is the same as the encapsulation layer structure of existing display panels, and will not be described in detail here.

[0050] As can be seen, the embodiments of this disclosure are arranged from bottom to top as follows: substrate layer, driving circuit layer, pixel layer, encapsulation layer, functional layer, and filter layer. The improvement of the embodiments of this disclosure is in the structure of the functional layer and the filter layer. Other structural layers can be referred to in related technologies.

[0051] For the first touch metal structure M1 and the second touch metal structure M2, for example, in the case of an FMLOC (Flexible Multi-Layer On-Cell) structure, the second touch metal structure M2 typically includes a first electrode and a second electrode that are cross-insulated. The first electrode is directly connected to the second touch metal structure M2, and the second electrode is connected through a bridging electrode in the first touch metal structure M1. The first touch metal structure M1 and the second touch metal structure M2 together adopt a metal mesh structure, and their positions need to avoid the light-emitting unit to prevent affecting its light emission. Alternatively, the first touch metal structure M1 can be used as the first electrode, and the second touch metal structure M2 as the second electrode, with an overall metal mesh design. The projection directions of the first touch metal structure M1 and the second touch metal structure M2 overlap; similarly, these should be avoided when designing to prevent affecting the light emission of the light-emitting unit.

[0052] Figure 1 The insulating layer composed of the first insulating material includes three layers: a first insulating layer, a second insulating layer, and a third insulating layer. The light extraction structure is disposed in the first insulating layer 1OC1, the first touch metal structure is disposed in the second insulating layer 2OC1, and the second touch metal structure is disposed in the third insulating layer 3OC1. Figure 1 This is merely an example and does not constitute a limitation on the embodiments disclosed herein. There are many possible implementations of the first insulating material, the photoextraction structure, the metal structure, and the filter layer described above, which will be described in the following embodiments.

[0053] The functional layer of this embodiment is provided with a light extraction structure. The refractive index of the light extraction structure is greater than that of the first insulating material covering it. Therefore, the light output from the light-emitting unit to the filter layer can be increased. Furthermore, the first insulating material covering the metal that enables the touch function is all made of organic material. This not only improves the display panel's resistance to compression and bending, but also, since the light extraction structure is set in the functional layer corresponding to the existing first insulating material, the combination of the high-refractive-index material and the organic material of the light extraction structure can realize the refraction or reflection of light. Compared with the existing process, only one mask patterning step is needed to significantly improve the light extraction efficiency of the display panel.

[0054] Example 2

[0055] Figure 1 The display panel shown requires an additional masking process compared to existing methods, which increases the manufacturing cost of the display panel. Figure 1 The distance between the black matrix BM and the light-emitting unit EL is relatively far, which will lead to a worse L-delay (viewing angle).

[0056] The second embodiment of this disclosure provides a display panel, the cross-sectional structure of which is shown in the figure below. Figure 2 As shown, this structure reduces one mask compared to Embodiment 1; the display panel includes:

[0057] Substrate layer 1, driving circuit layer 2, pixel layer 3, encapsulation layer 4, functional layer 5, filter layer 6;

[0058] The pixel layer includes: pixel definition layer (PDL) and light-emitting unit (EL);

[0059] The light-emitting unit is connected to the driving circuit of the driving circuit layer, which is disposed on the substrate layer, and the encapsulation layer is disposed on the pixel layer.

[0060] The functional layer includes: a light extraction structure GCQ, a first touch metal structure M1, and a second touch metal structure M2;

[0061] A light extraction structure is disposed on the encapsulation layer. The projection of the light extraction structure on the substrate layer covers the projection of the light-emitting unit on the substrate layer. The light extraction structure is covered with a first insulating material OC1, and the light refractive index of the light extraction structure is greater than the light refractive index of the first insulating material. The projections of the first touch metal structure and the second touch metal structure on the substrate layer at least partially overlap. The first touch metal structure is far from the filter layer, and the second touch metal structure is close to the filter layer. At least the first insulating material is disposed between the first touch metal structure and the second touch metal structure. The first insulating material is an organic material. The light extraction structure and the first touch metal structure are both disposed in the first insulating layer 1OC1, and the second touch metal structure is disposed in the second insulating layer 2OC1. The material used for the light extraction structure is covered on the first touch metal structure M1. The first insulating layer and the second insulating layer are both composed of the first insulating material.

[0062] The filter layer includes: a color filter (CF) and a black matrix (BM);

[0063] The projection of the color filter on the substrate layer covers the projection of the light-emitting unit on the substrate layer. The black matrix is ​​disposed adjacent to the color filter. The projection of the black matrix on the substrate layer covers the projection of the second touch metal structure on the substrate layer. The color filter and the black matrix are covered with a second insulating material OC2.

[0064] The aforementioned light extraction structure has a raised structure. In the embodiments disclosed herein, its cross-section is schematically a trapezoidal structure. The raised direction of the raised structure faces the filter layer. Adjacent light extraction structures are independent of each other. The projection of the color filter on the substrate layer covers the projection of the light extraction structure on the substrate layer. That is, the projection of the first surface of the light extraction structure in contact with the encapsulation layer on the substrate layer is greater than the projection of the second surface of the light extraction structure in contact with the first insulating material (the side parallel to the first surface) on the substrate layer.

[0065] In this embodiment, the functional layer and filter layer can be prepared according to the following process: first touch metal structure M1 → photoextraction structure GCQ → first insulating layer 1OC1 → second touch metal structure M2 → second insulating layer 2OC1 → black matrix BM → color filter CF (R / G / B) → second insulating material OC2. The first touch metal structure M1 is encapsulated by the photoextraction structure GCQ to prevent corrosion of the first touch metal structure M1 by the photoextraction structure GCQ during the developing process, thus protecting the first touch metal structure M1 from damage.

[0066] The functional layer of this embodiment is provided with a light extraction structure. The refractive index of the light extraction structure is greater than that of the first insulating material covering it. Therefore, the light output from the light-emitting unit to the filter layer can be increased. Furthermore, the first insulating material covering the metal that enables the touch function is all made of organic material. This not only improves the display panel's resistance to compression and bending, but also, since the light extraction structure is set in the functional layer corresponding to the existing first insulating material, the combination of the high-refractive-index material and the organic material of the light extraction structure can achieve light refraction or reflection. Compared with the existing process, it can significantly improve the light extraction efficiency and viewing angle of the display panel without increasing the number of mask channels.

[0067] Example 3

[0068] Figure 1 The display panel shown requires an additional masking process compared to existing methods, which increases the manufacturing cost of the display panel. Figure 1 The distance between the black matrix BM and the light-emitting unit EL is relatively far, which will lead to a worse L-delay (viewing angle).

[0069] The third embodiment of this disclosure provides a display panel, the cross-sectional structure of which is shown in the figure below. Figure 3 As shown, this structure reduces two masks compared to Embodiment 1; the display panel includes:

[0070] Substrate layer 1, driving circuit layer 2, pixel layer 3, encapsulation layer 4, functional layer 5, filter layer 6;

[0071] The pixel layer includes: pixel definition layer (PDL) and light-emitting unit (EL);

[0072] The light-emitting unit is connected to the driving circuit of the driving circuit layer, which is disposed on the substrate layer, and the encapsulation layer is disposed on the pixel layer.

[0073] The functional layer includes: a light extraction structure GCQ, a first touch metal structure M1, and a second touch metal structure M2;

[0074] A light extraction structure is disposed on the encapsulation layer. The projection of the light extraction structure on the substrate layer covers the projection of the light-emitting unit on the substrate layer. A first insulating material OC1 is covered on the light extraction structure. The light refractive index of the light extraction structure is greater than that of the first insulating material. The projections of the first touch metal structure and the second touch metal structure on the substrate layer at least partially overlap. The first touch metal structure is far from the filter layer, and the second touch metal structure is close to the filter layer. At least the first insulating material is disposed between the first touch metal structure and the second touch metal structure. The first insulating material is an organic material. The light extraction structure and the first touch metal structure are both disposed in the first insulating layer 1OC1. The second touch metal structure is disposed on the first insulating layer 1OC1. A black matrix is ​​covered on the second touch metal structure M2. The material used for the light extraction structure is covered on the first touch metal structure M1. The first insulating layer is composed of the first insulating material.

[0075] The filter layer includes: a color filter (CF) and a black matrix (BM);

[0076] The projection of the color filter on the substrate layer covers the projection of the light-emitting unit on the substrate layer. The black matrix is ​​disposed adjacent to the color filter. The projection of the black matrix on the substrate layer covers the projection of the second touch metal structure on the substrate layer. The color filter and the black matrix are covered with a second insulating material OC2.

[0077] The aforementioned light extraction structure has a raised structure. In the embodiments disclosed herein, its cross-section is schematically a trapezoidal structure. The raised direction of the raised structure faces the filter layer. Adjacent light extraction structures are independent of each other. The projection of the color filter on the substrate layer covers the projection of the light extraction structure on the substrate layer. That is, the projection of the first surface of the light extraction structure in contact with the encapsulation layer on the substrate layer is greater than the projection of the second surface of the light extraction structure in contact with the first insulating material (the side parallel to the first surface) on the substrate layer.

[0078] In this embodiment, the functional layer and filter layer can be prepared according to the following process: first touch metal structure M1 → photoextraction structure GCQ → first insulating layer OC1 → second touch metal structure M2 → black matrix BM → color filter CF (R / G / B) → second insulating material OC2. The first touch metal structure M1 is encapsulated by the photoextraction structure GCQ to prevent corrosion of the first touch metal structure M1 by the photoextraction structure GCQ during the developing process, thus protecting the first touch metal structure M1 from damage.

[0079] The functional layer of this embodiment is provided with a light extraction structure. The refractive index of the light extraction structure is greater than that of the first insulating material covering it. Therefore, the light output from the light-emitting unit to the filter layer can be increased. Furthermore, the first insulating material covering the metal that enables the touch function is all made of organic material. This not only improves the display panel's resistance to compression and bending, but also, since the light extraction structure is set in the functional layer corresponding to the existing first insulating material, the combination of the high-refractive-index material and the organic material of the light extraction structure can achieve light refraction or reflection. Compared with the existing process, this reduces one mask and can also significantly improve the light output efficiency and viewing angle of the display panel.

[0080] Example 4

[0081] Figure 1 The display panel shown requires an additional masking process compared to existing methods, which increases the manufacturing cost of the display panel. Figure 1 The distance between the black matrix BM and the light-emitting unit EL is relatively far, which will lead to a worse L-delay (viewing angle).

[0082] The fourth embodiment of this disclosure provides a display panel, the cross-sectional structure of which is shown in the figure below. Figure 4 As shown, this structure reduces one mask compared to Embodiment 1; the display panel includes:

[0083] Substrate layer 1, driving circuit layer 2, pixel layer 3, encapsulation layer 4, functional layer 5, filter layer 6;

[0084] The pixel layer includes: pixel definition layer (PDL) and light-emitting unit (EL);

[0085] The light-emitting unit is connected to the driving circuit of the driving circuit layer, which is disposed on the substrate layer, and the encapsulation layer is disposed on the pixel layer.

[0086] The functional layer includes: a light extraction structure GCQ, a first touch metal structure M1, and a second touch metal structure M2;

[0087] A light extraction structure is disposed on the encapsulation layer. The projection of the light extraction structure on the substrate layer covers the projection of the light-emitting unit on the substrate layer. A first insulating material OC1 is covered on the light extraction structure. The light refractive index of the light extraction structure is greater than that of the first insulating material. The projections of the first touch metal structure and the second touch metal structure on the substrate layer at least partially overlap. The first touch metal structure is far from the filter layer, and the second touch metal structure is close to the filter layer. At least the first insulating material is disposed between the first touch metal structure and the second touch metal structure. The first insulating material is an organic material. The light extraction structure and the first touch metal structure are both disposed in the first insulating layer 1OC1, and the second touch metal structure is disposed in the second insulating layer 2OC1. The first insulating material OC1 covers the first touch metal structure M1. The surface of the light extraction structure in contact with the first insulating material is provided with a predetermined pattern (illustrated in this embodiment as an uneven texture pattern). The first insulating layer and the second insulating layer are both composed of the first insulating material.

[0088] The filter layer includes: a color filter (CF) and a black matrix (BM);

[0089] The projection of the color filter on the substrate layer covers the projection of the light-emitting unit on the substrate layer. The black matrix is ​​disposed adjacent to the color filter. The projection of the black matrix on the substrate layer covers the projection of the second touch metal structure on the substrate layer. The color filter and the black matrix are covered with a second insulating material OC2.

[0090] The aforementioned light extraction structure has a raised structure. In the embodiments disclosed herein, its cross-section is schematically a trapezoidal structure. The raised direction of the raised structure faces the filter layer. Adjacent light extraction structures are independent of each other. The projection of the color filter on the substrate layer covers the projection of the light extraction structure on the substrate layer. That is, the projection of the first surface of the light extraction structure in contact with the encapsulation layer on the substrate layer is greater than the projection of the second surface of the light extraction structure in contact with the first insulating material (the side parallel to the first surface) on the substrate layer.

[0091] In this embodiment, the functional layer and filter layer can be fabricated according to the following process: photoextraction structure GCQ → first touch metal structure M1 → first insulating layer 1OC1 → second touch metal structure M2 → second insulating layer 2OC1 → black matrix BM → color filter CF (R / G / B) → second insulating material OC2. The photoextraction structure GCQ is etched with an uneven texture to further disperse the light emitted from the light-emitting unit, thus improving the L-delay.

[0092] The functional layer of this embodiment is provided with a light extraction structure. The refractive index of the light extraction structure is greater than that of the first insulating material covering it. Therefore, the light output from the light-emitting unit to the filter layer can be increased. Furthermore, the first insulating material covering the metal that enables the touch function is all made of organic material. This not only improves the display panel's resistance to compression and bending, but also, since the light extraction structure is set in the functional layer corresponding to the existing first insulating material, the combination of the high-refractive-index material and the organic material of the light extraction structure can achieve light refraction or reflection. Compared with the existing process, it can significantly improve the light extraction efficiency and viewing angle of the display panel without increasing the number of mask channels.

[0093] Example 5

[0094] Figure 1 The display panel shown requires an additional masking process compared to existing methods, which increases the manufacturing cost of the display panel. Figure 1 The distance between the black matrix BM and the light-emitting unit EL is relatively far, which will lead to a worse L-delay (viewing angle).

[0095] The third embodiment of this disclosure provides a display panel, the cross-sectional structure of which is shown in the figure below. Figure 5 As shown, this structure reduces two masks compared to Embodiment 1; the display panel includes:

[0096] Substrate layer 1, driving circuit layer 2, pixel layer 3, encapsulation layer 4, functional layer 5, filter layer 6;

[0097] The pixel layer includes: pixel definition layer (PDL) and light-emitting unit (EL);

[0098] The light-emitting unit is connected to the driving circuit of the driving circuit layer, which is disposed on the substrate layer, and the encapsulation layer is disposed on the pixel layer.

[0099] The functional layer includes: a light extraction structure GCQ, a first touch metal structure M1, and a second touch metal structure M2;

[0100] A light extraction structure is disposed on the encapsulation layer. The projection of the light extraction structure on the substrate layer covers the projection of the light-emitting unit on the substrate layer. A first insulating material OC1 is covered on the light extraction structure. The light refractive index of the light extraction structure is greater than that of the first insulating material. The projections of the first touch metal structure and the second touch metal structure on the substrate layer at least partially overlap. The first touch metal structure is far from the filter layer, and the second touch metal structure is close to the filter layer. At least the first insulating material is disposed between the first touch metal structure and the second touch metal structure. The first insulating material is an organic material. The light extraction structure and the first touch metal structure are both disposed in the first insulating layer 1OC1. The second touch metal structure is disposed on the first insulating layer 1OC1. A black matrix is ​​covered on the second touch metal structure M2. The first insulating material OC1 is covered on the first touch metal structure M1. A predetermined pattern is disposed on the surface of the light extraction structure in contact with the first insulating material (illustrated in this embodiment as an uneven texture pattern). The first insulating layer is composed of the first insulating material.

[0101] The filter layer includes: a color filter (CF) and a black matrix (BM);

[0102] The projection of the color filter on the substrate layer covers the projection of the light-emitting unit on the substrate layer. The black matrix is ​​disposed adjacent to the color filter. The projection of the black matrix on the substrate layer covers the projection of the second touch metal structure on the substrate layer. The color filter and the black matrix are covered with a second insulating material OC2.

[0103] The aforementioned light extraction structure has a raised structure. In the embodiments disclosed herein, its cross-section is schematically a trapezoidal structure. The raised direction of the raised structure faces the filter layer. Adjacent light extraction structures are independent of each other. The projection of the color filter on the substrate layer covers the projection of the light extraction structure on the substrate layer. That is, the projection of the first surface of the light extraction structure in contact with the encapsulation layer on the substrate layer is greater than the projection of the second surface of the light extraction structure in contact with the first insulating material (the side parallel to the first surface) on the substrate layer.

[0104] In this embodiment, the functional layer and filter layer can be fabricated according to the following process: photoextraction structure GCQ → first touch metal structure M1 → first insulating layer 1OC1 → second touch metal structure M2 → black matrix BM → color filter CF (R / G / B) → second insulating material OC2. The photoextraction structure GCQ is etched with an uneven texture to further disperse the light emitted from the light-emitting unit, thus improving the L-delay.

[0105] The functional layer of this embodiment is provided with a light extraction structure. The refractive index of the light extraction structure is greater than that of the first insulating material covering it. Therefore, the light output from the light-emitting unit to the filter layer can be increased. Furthermore, the first insulating material covering the metal that enables the touch function is all made of organic material. This not only improves the display panel's resistance to compression and bending, but also, since the light extraction structure is set in the functional layer corresponding to the existing first insulating material, the combination of the high-refractive-index material and the organic material of the light extraction structure can achieve light refraction or reflection. Compared with the existing process, this reduces one mask and can also significantly improve the light output efficiency and viewing angle of the display panel.

[0106] Example 6

[0107] Figure 1 The display panel shown requires an additional masking process compared to existing methods, which increases the manufacturing cost of the display panel. Figure 1 The distance between the black matrix BM and the light-emitting unit EL is relatively far, which will lead to a worse L-delay (viewing angle).

[0108] The sixth embodiment of this disclosure provides a display panel, the cross-sectional structure of which is shown in the figure below. Figure 6 As shown, the display panel includes:

[0109] Substrate layer 1, driving circuit layer 2, pixel layer 3, encapsulation layer 4, functional layer 5, filter layer 6;

[0110] The pixel layer includes: pixel definition layer (PDL) and light-emitting unit (EL);

[0111] The light-emitting unit is connected to the driving circuit of the driving circuit layer, which is disposed on the substrate layer, and the encapsulation layer is disposed on the pixel layer.

[0112] The functional layer includes: a light extraction structure GCQ, a first touch metal structure M1, and a second touch metal structure M2;

[0113] A light extraction structure is disposed on the encapsulation layer. The projection of the light extraction structure on the substrate layer covers the projection of the light-emitting unit on the substrate layer. The light extraction structure is covered with a first insulating material OC1, and the light refractive index of the light extraction structure is greater than the light refractive index of the first insulating material. The projections of the first touch metal structure and the second touch metal structure on the substrate layer at least partially overlap. The first touch metal structure is far away from the filter layer, and the second touch metal structure is close to the filter layer. At least the first insulating material is disposed between the first touch metal structure and the second touch metal structure. The first insulating material is an organic material. The light extraction structure GCQ is disposed in the first insulating layer 1OC1, the first touch metal structure M1 is disposed in the second insulating layer 2OC1, the second touch metal structure M2 is disposed on the second insulating layer 2OC1, and the black matrix BM is covered on the second touch metal structure M2. The first insulating layer and the second insulating layer are composed of the first insulating material.

[0114] The filter layer includes: a color filter (CF) and a black matrix (BM);

[0115] The projection of the color filter on the substrate layer covers the projection of the light-emitting unit on the substrate layer. The black matrix is ​​disposed adjacent to the color filter. The projection of the black matrix on the substrate layer covers the projection of the second touch metal structure on the substrate layer. The color filter and the black matrix are covered with a second insulating material OC2.

[0116] Figure 6 The first insulating material shown includes two layers: a first insulating layer and a second insulating layer. In implementation, the technical solution described in the above embodiments can be used as a reference. Figure 6 The improvement can be made by including only one first insulating layer in the first insulating material, that is, the light extraction structure and the first touch metal structure are set in the same layer. The specific setting method can be referred to the above embodiment, which will not be repeated here.

[0117] The aforementioned light extraction structure has a raised structure. In the embodiments disclosed herein, its cross-section is schematically a trapezoidal structure. The raised direction of the raised structure faces the filter layer. Adjacent light extraction structures are independent of each other. The projection of the color filter on the substrate layer covers the projection of the light extraction structure on the substrate layer. That is, the projection of the first surface of the light extraction structure in contact with the encapsulation layer on the substrate layer is greater than the projection of the second surface of the light extraction structure in contact with the first insulating material (the side parallel to the first surface) on the substrate layer.

[0118] The functional layer of this embodiment is provided with a light extraction structure. The refractive index of the light extraction structure is greater than that of the first insulating material covering it. Therefore, the light output from the light-emitting unit to the filter layer can be increased. Furthermore, the first insulating material covering the metal that enables the touch function is all made of organic material. This not only improves the display panel's resistance to compression and bending, but also, since the light extraction structure is set in the functional layer corresponding to the existing first insulating material, the combination of the high-refractive-index material and the organic material in the light extraction structure can achieve light refraction or reflection. Compared with the existing process, it does not require increasing or can reduce the number of mask channels, which can significantly improve the light extraction efficiency and viewing angle of the display panel.

[0119] Example 7

[0120] Figure 1 The display panel shown requires an additional masking process compared to existing methods, which increases the manufacturing cost of the display panel. Figure 1 The distance between the black matrix BM and the light-emitting unit EL is relatively far, which will lead to a worse L-delay (viewing angle).

[0121] The seventh embodiment of this disclosure provides a display panel, the cross-sectional structure of which is shown in the figure below. Figure 7 As shown, the display panel includes:

[0122] Substrate layer 1, driving circuit layer 2, pixel layer 3, encapsulation layer 4, functional layer 5, filter layer 6;

[0123] The pixel layer includes: pixel definition layer (PDL) and light-emitting unit (EL);

[0124] The light-emitting unit is connected to the driving circuit of the driving circuit layer, which is disposed on the substrate layer, and the encapsulation layer is disposed on the pixel layer.

[0125] The functional layer includes: a light extraction structure GCQ, a first touch metal structure M1, and a second touch metal structure M2;

[0126] A light extraction structure is disposed on the encapsulation layer. The projection of the light extraction structure on the substrate layer covers the projection of the light-emitting unit on the substrate layer. The light extraction structure is covered with a first insulating material OC1, and the light refractive index of the light extraction structure is greater than the light refractive index of the first insulating material. The projections of the first touch metal structure and the second touch metal structure on the substrate layer at least partially overlap. The first touch metal structure is far away from the filter layer, and the second touch metal structure is close to the filter layer. At least the first touch metal structure and the second touch metal structure are provided with the first insulating material, which is an organic material. The first touch metal structure M1 is disposed in the first insulating layer 1OC1, and the light extraction structure GCQ and the second touch metal structure M2 are both disposed in the second insulating layer 2OC1. The first insulating layer and the second insulating layer are both composed of the first insulating material.

[0127] The filter layer includes: a color filter (CF) and a black matrix (BM);

[0128] The projection of the color filter on the substrate layer covers the projection of the light-emitting unit on the substrate layer. The black matrix is ​​disposed adjacent to the color filter. The projection of the black matrix on the substrate layer covers the projection of the second touch metal structure on the substrate layer. The color filter and the black matrix are covered with a second insulating material OC2.

[0129] The aforementioned light extraction structure has a raised structure. In the embodiments disclosed herein, its cross-section is schematically a trapezoidal structure. The raised direction of the raised structure faces the filter layer. Adjacent light extraction structures are independent of each other. The projection of the color filter on the substrate layer covers the projection of the light extraction structure on the substrate layer. That is, the projection of the first surface of the light extraction structure in contact with the encapsulation layer on the substrate layer is greater than the projection of the second surface of the light extraction structure in contact with the first insulating material (the side parallel to the first surface) on the substrate layer.

[0130] The functional layer of this embodiment is provided with a light extraction structure. The refractive index of the light extraction structure is greater than that of the first insulating material covering it. Therefore, the light output from the light-emitting unit to the filter layer can be increased. Furthermore, the first insulating material covering the metal that enables the touch function is all made of organic material. This not only improves the display panel's resistance to compression and bending, but also, since the light extraction structure is set in the functional layer corresponding to the existing first insulating material, the combination of the high-refractive-index material and the organic material in the light extraction structure can achieve light refraction or reflection. Compared with the existing process, it does not require increasing or can reduce the number of mask channels, which can significantly improve the light extraction efficiency and viewing angle of the display panel.

[0131] The above embodiments are only examples of the embodiments of this disclosure. In specific implementation, those skilled in the art can make adaptive adjustments to the above embodiments. For example, the light extraction structure has a raised structure, but the direction and structure of the raised structure are changed. The raised direction of the raised structure is towards the encapsulation layer, and adjacent light extraction structures are connected to each other. The surface of the continuous light extraction structure in contact with the first insulating material is parallel to the first surface of the encapsulation layer (the side close to the filter layer).

[0132] Currently, there are still some issues with pin protection. Therefore, in this embodiment, an inorganic layer is first applied for protection before the functional layer is fabricated. That is, a first inorganic layer is also provided on the packaging layer, and then a functional layer is provided on the inorganic layer to solve the problem of pin protection.

[0133] As can be seen, there are various modified structures in the embodiments of this disclosure, which will not be described in detail here, but they are all within the protection scope of the embodiments of this disclosure.

[0134] This disclosure also provides an electronic device that may include the display panel in any embodiment of this disclosure; the structure of the display panel will not be described in detail here.

[0135] Furthermore, although exemplary embodiments have been described herein, their scope includes any and all embodiments based on this disclosure that have equivalent elements, modifications, omissions, combinations (e.g., schemes involving intersections of various embodiments), adaptations, or alterations. Elements in the claims will be interpreted broadly based on the language used in the claims and are not limited to the examples described in this specification or during the implementation of this application, and such examples will be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered illustrative only, and the true scope and spirit are indicated by the full scope of the following claims and their equivalents.

[0136] The above description is intended to be illustrative and not restrictive. For example, the above examples (or one or more thereof) can be used in combination with each other. Other embodiments may be used by those skilled in the art upon reading the above description. Furthermore, in the above detailed description, various features may be grouped together to simplify the disclosure. This should not be construed as an intention that a feature of the disclosure that is not claimed is necessary for any claim. Rather, the subject matter of this disclosure may be less than all the features of a particular disclosed embodiment. Thus, the following claims are incorporated herein by reference as examples or embodiments, wherein each claim is an independent, separate embodiment, and these embodiments are contemplated to be combined with each other in various combinations or arrangements. The scope of this disclosure should be determined by reference to the appended claims and the full scope of their equivalents.

[0137] The foregoing has provided a detailed description of several embodiments of this disclosure. However, this disclosure is not limited to these specific embodiments. Those skilled in the art can make various variations and modifications based on the concept of this disclosure, and all such variations and modifications should fall within the scope of protection claimed by this disclosure.

Claims

1. A display panel, characterized by, include: Substrate layer, driving circuit layer, pixel layer, encapsulation layer, functional layer, and filter layer; The pixel layer includes: a pixel defining layer and a light-emitting unit; The light-emitting unit is connected to the driving circuit of the driving circuit layer, the driving circuit layer is disposed on the substrate layer, and the encapsulation layer is disposed on the pixel layer; The functional layer includes: a light extraction structure, a first touch metal structure, and a second touch metal structure; The light extraction structure is disposed on the encapsulation layer, and the projection of the light extraction structure on the substrate layer covers the projection of the light-emitting unit on the substrate layer. The light extraction structure is covered with a first insulating material, and the refractive index of the light extraction structure is greater than the refractive index of the first insulating material. The projections of the first touch metal structure and the second touch metal structure on the substrate layer at least partially overlap. The first touch metal structure is away from the filter layer, and the second touch metal structure is close to the filter layer. The first insulating material, which is an organic material, is disposed at least between the first touch metal structure and the second touch metal structure. The filter layer includes: a color filter and a black matrix; The projection of the color filter on the substrate layer covers the projection of the light-emitting unit on the substrate layer. The black matrix is ​​disposed adjacent to the color filter. The projection of the black matrix on the substrate layer covers the projection of the second touch metal structure on the substrate layer. The color filter and the black matrix are covered with a second insulating material.

2. The display panel as described in claim 1, characterized in that, The light extraction structure is disposed in the first insulating layer, the first touch metal structure is disposed in the second insulating layer, and the second touch metal structure is disposed in the third insulating layer, wherein the first insulating layer, the second insulating layer, and the third insulating layer are all composed of the first insulating material.

3. The display panel as described in claim 1, characterized in that, The light extraction structure is disposed in the first insulating layer, the first touch metal structure is disposed in the second insulating layer, the second touch metal structure is disposed on the second insulating layer, and the black matrix covers the second touch metal structure, wherein the first insulating layer and the second insulating layer are composed of the first insulating material.

4. The display panel as described in claim 1, characterized in that, The first touch metal structure is disposed in the first insulating layer, and the light extraction structure and the second touch metal structure are both disposed in the second insulating layer, wherein the first insulating layer and the second insulating layer are both composed of the first insulating material.

5. The display panel as described in claim 1, characterized in that, The light extraction structure and the first touch metal structure are both disposed in the first insulating layer, and the second touch metal structure is disposed in the second insulating layer, wherein the first insulating layer and the second insulating layer are both composed of the first insulating material.

6. The display panel as described in claim 1, characterized in that, The light extraction structure and the first touch metal structure are both disposed in the first insulating layer, the second touch metal structure is disposed on the first insulating layer, and the black matrix covers the second touch metal structure. The first insulating layer is composed of the first insulating material.

7. The display panel as described in claim 5 or 6, characterized in that, The material used in the light extraction structure is applied to the first touch-sensitive metal structure; or... The first insulating material covers the first touch metal structure, and the surface of the light extraction structure that contacts the first insulating material is provided with a predetermined pattern.

8. The display panel as described in any one of claims 2 to 6, characterized in that, A first inorganic layer is also provided on the encapsulation layer.

9. The display panel as described in any one of claims 2 to 6, characterized in that, The light extraction structure has a raised structure, the raised direction of which faces the filter layer. Adjacent light extraction structures are independent of each other, and the projection of the color filter on the substrate layer overlaps the projection of the light extraction structure on the substrate layer; or... The light extraction structure has a raised structure, the raised direction of the raised structure is towards the encapsulation layer, and adjacent light extraction structures are connected to each other. The surface of the continuous light extraction structure in contact with the first insulating material is parallel to the first surface of the encapsulation layer, and the first surface is the side close to the filter layer.

10. An electronic device, comprising: include: The display panel according to any one of claims 1 to 9.

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