Display panel and its manufacturing method, display device

Abstract

A display panel and its manufacturing method and display device are disclosed. The display panel comprises a first substrate (100) and a second substrate (200) disposed opposite to each other. The first substrate (100) includes a first base (101) and at least one dielectric filter layer disposed on the side of the first base (101) facing the second substrate (200). The dielectric filter layer is configured to transmit light of a specific color. The second substrate (200) includes a first color filter pattern (211), a second color filter pattern (212), and a third color filter pattern (213). The first color filter pattern (211) is configured to transmit at least a first color light, the second color filter pattern (212) is configured to transmit at least a second color light, and the third color filter pattern (213) is configured to transmit at least a third color light. At least one of the first color filter pattern (211), the second color filter pattern (212), and the third color filter pattern (213) overlaps with the orthographic projection of the medium filter layer on the first substrate (101). At least a portion of the light transmitted by the medium filter layer is the same color as at least a portion of the light transmitted by the overlapping color filter pattern.

Description

Technical Field

[0001] This disclosure relates to, but is not limited to, the field of display technology, specifically to a display panel and its manufacturing method, and a display device. Background Technology

[0002] Thin Film Transistor Liquid Crystal Display (TFT-LCD) is a type of flat panel display device that is increasingly being used in high-performance display fields due to its small size, low power consumption, no radiation, and relatively low manufacturing cost. Summary of the Invention

[0003] The following is an overview of the subject matter described in detail herein. This overview is not intended to limit the scope of the claims.

[0004] On one hand, this disclosure provides a display panel including a first substrate and a second substrate disposed opposite to each other. The first substrate includes a first base and a first dielectric filter layer disposed on the side of the first substrate facing the second substrate. The second substrate includes a first color filter pattern, a second color filter pattern, and a third color filter pattern. The first color filter pattern is configured to transmit at least a first color light, the second color filter pattern is configured to transmit at least a second color light, and the third color filter pattern is configured to transmit at least a third color light. At least one of the first color filter pattern, the second color filter pattern, and the third color filter pattern overlaps with the orthographic projection of the first dielectric filter layer on the first base. At least a portion of the light transmitted by the first dielectric filter layer has the same color as at least a portion of the light transmitted by the overlapping color filter pattern.

[0005] In an exemplary embodiment, the first dielectric filter layer has a transmittance of 90% or greater for the transmitted at least a portion of the light.

[0006] In an exemplary embodiment, the first dielectric filter layer includes a first dielectric layer and a second dielectric layer alternately disposed along the thickness direction of the first substrate. The film layer of the dielectric filter layer on the side closer to the first substrate is the first dielectric layer, and the film layer on the side of the dielectric filter layer away from the first substrate is the second dielectric layer. The refractive index of the first dielectric layer is less than the refractive index of the second dielectric layer.

[0007] In an exemplary embodiment, the first medium filter layer overlaps with the orthographic projections of the first color filter pattern and the second color filter pattern on the first substrate, but does not overlap with the orthographic projection of the third color filter pattern on the first substrate. The transmittance of the first medium filter layer to the first color light and the second color light is greater than or equal to 90%.

[0008] In an exemplary embodiment, the first dielectric filter layer has a reflectivity of 95% or greater for the third color light.

[0009] In an exemplary embodiment, the first dielectric filter layer is in direct contact with the first substrate.

[0010] In an exemplary embodiment, the first substrate further includes a second dielectric filter layer, which is disposed on the side of the first dielectric filter layer away from the first substrate. The second dielectric filter layer overlaps with the orthographic projections of the second color filter pattern and the third color filter pattern on the first substrate. The transmittance of the second dielectric filter layer to the second color light and the third color light is greater than or equal to 90%, and the reflectance of the second dielectric filter layer to the first color light is greater than or equal to 95%.

[0011] In an exemplary embodiment, a planarization layer is further included. The planarization layer is at least disposed on the side of the second color filter pattern close to the first substrate. The planarization layer is integrally connected with the second color filter pattern and includes the same material. The planarization layer has a transmittance of greater than or equal to 95% for the first color light, the second color light, and the third color light.

[0012] In an exemplary embodiment, the thickness of the first color filter pattern is greater than or equal to 0.5 micrometers and less than or equal to 1.2 micrometers; and / or, the thickness of the second color filter pattern is greater than or equal to 0.5 micrometers and less than or equal to 1.2 micrometers.

[0013] In an exemplary embodiment, the first substrate further includes a third dielectric filter layer disposed on the side of the second dielectric filter layer away from the first substrate. The third dielectric filter layer includes a third sub-dielectric filter layer and a fourth sub-dielectric filter layer. The third sub-dielectric filter layer overlaps with the orthographic projection of the first color filter pattern on the first substrate, and the fourth sub-dielectric filter layer overlaps with the orthographic projection of the third color filter pattern on the first substrate. The transmittance of the third sub-dielectric filter layer and the fourth sub-dielectric filter layer to the first color light and the third color light is both greater than or equal to 90%, and the reflectance of the second color light is both greater than or equal to 95%.

[0014] In an exemplary embodiment, a planarization layer is further included. The planarization layer is at least disposed on the side of the first color filter pattern and the third color filter pattern close to the first substrate. The planarization layer is integrally connected to the first color filter pattern and the third color filter pattern and includes the same material. The light transmittance of the planarization layer to the first color light, the second color light and the third color light is greater than or equal to 95%.

[0015] In an exemplary embodiment, the first substrate further includes a second dielectric filter layer, which is disposed on the side of the first dielectric filter layer away from the first substrate. The second dielectric filter layer includes a first sub-dielectric filter layer and a second sub-dielectric filter layer. The first sub-dielectric filter layer overlaps with the orthographic projection of the first color filter pattern on the first substrate, and the second sub-dielectric filter layer overlaps with the orthographic projection of the third color filter pattern on the first substrate. The first sub-dielectric filter layer and the second sub-dielectric filter layer both have a transmittance of greater than or equal to 90% for the first color light and the third color light, and a reflectance of greater than or equal to 95% for the second color light.

[0016] In an exemplary embodiment, a planarization layer is further included. The planarization layer is at least disposed on the side of the first color filter pattern close to the first substrate. The planarization layer is integrally connected with the first color filter pattern and includes the same material. The planarization layer has a transmittance of greater than or equal to 95% for the first color light, the second color light, and the third color light.

[0017] In an exemplary embodiment, the thickness of the second color filter pattern is greater than or equal to 0.5 micrometers and less than or equal to 1.2 micrometers; and / or, the thickness of the third color filter pattern is greater than or equal to 0.5 micrometers and less than or equal to 1.2 micrometers.

[0018] In an exemplary embodiment, the first substrate further includes a third dielectric filter layer disposed on the side of the second dielectric filter layer away from the first substrate. The third dielectric filter layer includes a third sub-dielectric filter layer and a fourth sub-dielectric filter layer. The third sub-dielectric filter layer overlaps with the orthographic projection of the second color filter pattern on the first substrate. The third sub-dielectric filter layer has a transmittance of greater than or equal to 90% for both the second and third color rays and a reflectance of greater than or equal to 95% for the first color ray. The fourth sub-dielectric filter layer overlaps with the orthographic projection of the third color filter pattern on the first substrate. The fourth sub-dielectric filter layer has a transmittance of greater than or equal to 90% for both the second and third color rays and a reflectance of greater than or equal to 95% for the first color ray.

[0019] In an exemplary embodiment, a planarization layer is further included. The planarization layer is at least disposed on the side of the second color filter pattern and the third color filter pattern close to the first substrate. The planarization layer is integrally connected with the second color filter pattern and the third color filter pattern and includes the same material. The light transmittance of the planarization layer to the first color light, the second color light and the third color light is greater than or equal to 95%.

[0020] In an exemplary embodiment, the first substrate further includes a second dielectric filter layer, which is disposed on the side of the first dielectric filter layer away from the first substrate. The second dielectric filter layer overlaps with the orthographic projection of the third color filter pattern on the first substrate. The second dielectric filter layer has a transmittance of greater than or equal to 90% for the third color light and a reflectance of greater than or equal to 95% for both the first color light and the second color light.

[0021] In an exemplary embodiment, a planarization layer is further included. The planarization layer is at least disposed on the side of the third color filter pattern close to the first substrate. The planarization layer is integrally connected with the third color filter pattern and includes the same material. The planarization layer has a transmittance of greater than or equal to 95% for the first color light, the second color light, and the third color light.

[0022] In an exemplary embodiment, the thickness of the first color filter pattern is greater than or equal to 0.5 micrometers and less than or equal to 1.2 micrometers; and / or, the thickness of the second color filter pattern is greater than or equal to 0.5 micrometers and less than or equal to 1.2 micrometers.

[0023] In an exemplary embodiment, the first substrate further includes a third dielectric filter layer disposed on the side of the second dielectric filter layer away from the first substrate. The third dielectric filter layer includes a third sub-dielectric filter layer and a fourth sub-dielectric filter layer. The third sub-dielectric filter layer overlaps with the orthographic projection of the first color filter pattern on the first substrate. The third sub-dielectric filter layer has a transmittance of greater than or equal to 90% for both the first color light and the third color light, and a reflectance of greater than or equal to 95% for the second color light. The fourth sub-dielectric filter layer overlaps with the orthographic projection of the second color filter pattern on the first substrate. The fourth sub-dielectric filter layer has a transmittance of greater than or equal to 90% for both the second color light and the third color light, and a reflectance of greater than or equal to 95% for the first color light.

[0024] In an exemplary embodiment, a planarization layer is further included. The planarization layer is at least disposed on the side of the first color filter pattern and the second color filter pattern close to the first substrate. The planarization layer is integrally connected with the first color filter pattern and the second color filter pattern and includes the same material. The planarization layer has a transmittance of greater than or equal to 95% for the first color light, the second color light and the third color light.

[0025] In an exemplary embodiment, the first substrate further includes a pixel driving circuit disposed on the side of the first dielectric filter layer away from the first substrate. The pixel driving circuit includes at least one thin-film transistor. The thin-film transistor includes an active layer, a gate, a first electrode, and a second electrode. The active layer is disposed on the side of the first dielectric filter layer away from the first substrate. The gate is disposed on the side of the active layer away from the first substrate. The gate and the orthographic projection of the active layer on the first substrate overlap. The first electrode and the second electrode are disposed on the side of the gate away from the first substrate. The first electrode and the second electrode are respectively connected to the active layer.

[0026] In an exemplary embodiment, the first substrate further includes alignment marks disposed on the first substrate. The alignment marks are disposed on the side of the at least one dielectric filter layer near the first substrate, and the alignment marks do not overlap with the orthographic projection of the at least one dielectric filter layer on the first substrate.

[0027] On the other hand, this disclosure also provides a display device including any of the display panels described above.

[0028] On the other hand, this disclosure also provides a method for manufacturing a display panel, comprising:

[0029] A first dielectric filter layer is formed on a first substrate;

[0030] A second substrate is provided, the second substrate including a first color filter pattern, a second color filter pattern and a third color filter pattern, the first color filter pattern being configured to transmit at least a first color light, the second color filter pattern being configured to transmit at least a second color light, and the third color filter pattern being configured to transmit at least a third color light;

[0031] The first substrate and the second substrate are disposed together; wherein at least one of the first color filter pattern, the second color filter pattern and the third color filter pattern overlaps with the orthographic projection of the first dielectric filter layer on the first substrate, and at least a portion of the light transmitted by the first dielectric filter layer is the same color as at least a portion of the light transmitted by the overlapping color filter pattern.

[0032] After reading and understanding the accompanying diagrams and detailed descriptions, the other aspects will become clear. Attached Figure Description

[0033] The accompanying drawings are used to provide an understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0034] Figure 1This is a cross-sectional structural diagram of the display panel according to an embodiment of this application;

[0035] Figure 2 This is a schematic diagram of the planar structure of the display panel according to an embodiment of this application;

[0036] Figure 3 This is a cross-sectional structural diagram of the display device according to an embodiment of this application;

[0037] Figure 4 This is a cross-sectional structural diagram of a display panel according to an embodiment of this application;

[0038] Figure 5a This application provides a schematic diagram of a display panel fabrication process after the formation of alignment marks and a first dielectric filter layer;

[0039] Figure 5b This application provides a schematic diagram of a display panel fabrication process after the formation of thin-film transistors;

[0040] Figure 5c This application provides a schematic diagram of a display panel after the formation of a second dielectric filter layer during the manufacturing process.

[0041] Figure 5d This application provides a schematic diagram of a display panel fabrication process after the formation of a first substrate;

[0042] Figure 6 This is a cross-sectional structural diagram of another display panel according to an embodiment of this application;

[0043] Figure 7 This is a cross-sectional structural diagram of another display panel according to an embodiment of this application;

[0044] Figure 8 This is a cross-sectional structural diagram of another display panel according to an embodiment of this application;

[0045] Figure 9 This is a cross-sectional structural diagram of another display panel according to an embodiment of this application;

[0046] Figure 10 This is a cross-sectional structural diagram of another display panel according to an embodiment of this application. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this disclosure clearer, embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. Note that the implementation methods can be carried out in many different forms. Those skilled in the art will readily understand that the methods and content can be varied in various forms without departing from the spirit and scope of this disclosure. Therefore, this disclosure should not be construed as limited to the content described in the following embodiments. Without conflict, the embodiments and features in the embodiments of this disclosure can be arbitrarily combined with each other.

[0048] In the accompanying drawings, the size of the constituent elements, the thickness of the layers, or the area are sometimes exaggerated for clarity. Therefore, one aspect of this disclosure is not necessarily limited to these dimensions, and the shapes and sizes of the components in the drawings do not reflect true proportions. Furthermore, the drawings schematically illustrate ideal examples, and one aspect of this disclosure is not limited to the shapes or values ​​shown in the drawings.

[0049] The ordinal numbers “first,” “second,” and “third” used in this specification are used to avoid confusion among the constituent elements, not to limit their quantity.

[0050] In this specification, for convenience, terms such as "middle," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are used to indicate orientation or positional relationships in conjunction with the accompanying drawings. This is solely for the purpose of facilitating the description and simplification, and does not imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this disclosure. The positional relationships of the constituent elements may be appropriately varied depending on the orientation of each constituent element being described. Therefore, the use of terms not limited to those described in the specification may be appropriately replaced as needed.

[0051] In this specification, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they may refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or joint; a direct connection, an indirect connection via an intermediate component, or a connection within two components. Those skilled in the art will understand the specific meaning of these terms in this disclosure based on the specific circumstances.

[0052] In this specification, a transistor is a device that includes at least three terminals: a gate electrode, a drain electrode, and a source electrode. A transistor has a channel region between the drain electrode (drain electrode terminal, drain region, or drain electrode) and the source electrode (source electrode terminal, source region, or source electrode), and current can flow through the drain electrode, the channel region, and the source electrode. Note that in this specification, the channel region refers to the region through which current primarily flows.

[0053] In this specification, the first electrode can be the drain electrode and the second electrode can be the source electrode, or vice versa. In cases where transistors with opposite polarities are used or the current direction changes during circuit operation, the functions of the "source electrode" and "drain electrode" may sometimes be interchanged. Therefore, in this specification, the "source electrode" and "drain electrode" can be interchanged.

[0054] In this specification, "connection" includes the situation where constituent elements are connected together by a component having a certain electrical function. There are no particular limitations on the "component having a certain electrical function," as long as it enables the transmission and reception of electrical signals between the connected constituent elements. Examples of "components having a certain electrical function" include not only electrodes and wiring, but also switching elements such as transistors, resistors, inductors, capacitors, and other components with various functions.

[0055] In this specification, "parallel" refers to the state where the angle formed by two straight lines is greater than or equal to -10° and less than 10°, and therefore also includes the state where the angle is greater than or equal to -5° and less than 5°. Similarly, "perpendicular" refers to the state where the angle formed by two straight lines is greater than or equal to 80° and less than 100°, and therefore also includes the state where the angle is greater than or equal to 85° and less than 95°.

[0056] In this specification, the terms "film" and "layer" may be interchanged. For example, "conductive layer" may sometimes be replaced with "conductive film." Similarly, "insulating film" may sometimes be replaced with "insulating layer."

[0057] In this disclosure, “about” means a value that is not strictly limited and allows for process and measurement errors.

[0058] The inventors of this application have discovered that in existing liquid crystal display panels, the thickness of the R, G, and B color filters in the color filter substrate is relatively large, for example, the thickness of the R, G, and B color filters is 2 to 3 micrometers. This causes a large amount of light emitted from the light-emitting substrate to be absorbed and lost by the R, G, and B color filters, which reduces the light emission efficiency of the light emitted from the light-emitting substrate and the transmittance of the liquid crystal display panel.

[0059] This disclosure provides a display panel including a first substrate and a second substrate disposed opposite to each other. The first substrate includes a first base and a first dielectric filter layer disposed on the side of the first substrate facing the second substrate. The second substrate includes a first color filter pattern, a second color filter pattern, and a third color filter pattern. The first color filter pattern is configured to transmit at least a first color light, the second color filter pattern is configured to transmit at least a second color light, and the third color filter pattern is configured to transmit at least a third color light. At least one of the first color filter pattern, the second color filter pattern, and the third color filter pattern overlaps with the orthographic projection of the first dielectric filter layer on the first substrate. At least a portion of the light transmitted by the first dielectric filter layer has the same color as at least a portion of the light transmitted by the overlapping color filter pattern.

[0060] The following examples illustrate the solution of this embodiment.

[0061] Figure 1 This is a cross-sectional structural diagram of the display panel according to an embodiment of this application. Figure 1 As shown, the display panel may include a first substrate 100 and a second substrate 200 disposed opposite to each other, and a liquid crystal layer 300 disposed between the first substrate 100 and the second substrate 200. The first substrate 100 may include a first structural layer 102 disposed on the side of the first substrate 101 facing the second substrate 200, and the second substrate 200 may include a second structural layer 202 disposed on the side of the second substrate 201 facing the first substrate 100.

[0062] In an exemplary embodiment, the first structural layer 102 may include gate lines, data lines, pixel driving circuits, pixel electrodes, and common electrodes, and the pixel driving circuits include at least one thin-film transistor; the second structural layer 202 may include a black matrix and a color filter pattern.

[0063] In an exemplary embodiment, the first substrate 101 and the second substrate 201 can be inorganic or organic materials. In one embodiment of this disclosure, the materials of the first substrate 101 and the second substrate 201 can be glass materials such as soda-lime glass, quartz glass, and sapphire glass, or metal materials such as stainless steel, aluminum, and nickel. In another embodiment of this disclosure, the materials of the first substrate 101 and the second substrate 201 can be polymethyl methacrylate (PMMA), polyvinyl alcohol (PVA), polyvinylphenol (PVP), polyether sulfone (PES), polyimide, polyamide, polyacetal, polycarbonate (PC), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), or combinations thereof. In another embodiment of this disclosure, the first substrate 101 and the second substrate 201 may also be flexible materials, such as polyimide (PI). The first substrate 101 and the second substrate 201 may also be a composite of multiple layers. For example, in one embodiment of this disclosure, the first substrate 101 and the second substrate 201 may include a bottom film, a pressure-sensitive adhesive layer, a first polyimide layer, and a second polyimide layer stacked sequentially.

[0064] Figure 2 This is a schematic diagram of the planar structure of the display panel according to an embodiment of this application. Figure 2 As shown, the display panel may include a plurality of pixel units P arranged at intervals. At least one of the plurality of pixel units P includes a first sub-pixel P1 emitting a first color light, a second sub-pixel P2 emitting a second color light, and a third sub-pixel P3 emitting a third color light. Each of the three sub-pixels may include a thin-film transistor, a pixel electrode, and a common electrode. In an exemplary embodiment, the first sub-pixel P1 may be a red sub-pixel emitting red (R) light, the second sub-pixel P2 may be a green sub-pixel emitting green (G) light, and the third sub-pixel P3 may be a blue sub-pixel emitting blue (B) light. The shape of the sub-pixels in the pixel unit may be rectangular, rhomboid, pentagonal, or hexagonal, etc. The sub-pixels in the pixel unit may be arranged horizontally side by side, vertically side by side, or in a triangular arrangement, which is not limited herein. In an exemplary embodiment, the pixel unit may include four sub-pixels, which is not limited herein.

[0065] Figure 3 This is a cross-sectional structural diagram of the display device according to an embodiment of this application. In an exemplary embodiment, such as... Figure 3 As shown, the display device in this application embodiment may include a display panel and a light-emitting substrate 300 disposed opposite to each other. The display panel may include a first substrate 100 and a second substrate 200 disposed opposite to each other, and a liquid crystal layer (not shown in the figure) disposed between the first substrate 100 and the second substrate 200. The first substrate 100 is located on the side of the second substrate 200 closer to the light-emitting substrate 300. The light-emitting substrate 300 is configured to emit light toward the first substrate 100. The light emitted by the light-emitting substrate 300 can be used as the light emitted from the light-emitting substrate of the display panel.

[0066] In an exemplary embodiment, the light-emitting substrate 300 includes a plurality of light-emitting devices, which may include one of organic light-emitting diodes (OLEDs), light-emitting diodes (LEDs), and quantum dot light-emitting diodes (QLEDs). The light-emitting layer of the light-emitting device may include organic materials, inorganic materials, quantum dots, organic materials and quantum dots, inorganic materials and quantum dots, or organic materials, inorganic materials and quantum dots.

[0067] In an exemplary embodiment, the first substrate 100 includes a first base 101 and a first dielectric filter layer 31 disposed on the side of the first base 101 near the second substrate 200. The first dielectric filter layer 31 is configured to transmit first color light and second color light, and reflect third color light toward the light-emitting substrate 300. For example, the first color light can be red light, the second color light can be green light, and the third color light can be blue light. The first dielectric filter layer 31 has a transmittance of greater than or equal to 90% for the first color light and the second color light, and a reflectance of greater than or equal to 95% for the third color light.

[0068] The display device in this application embodiment can reflect a third color light through the first dielectric filter layer 31. The reflected third color light can re-excite the light-emitting substrate 300, thereby increasing the light emission intensity of the light-emitting substrate 300.

[0069] In an exemplary embodiment, the first dielectric filter layer 31 is disposed on the first substrate 101 and is in direct contact with the surface of the first substrate 101 on the side near the second substrate 200.

[0070] In an exemplary embodiment, the first dielectric filter layer 31 may be a multi-layer stacked structure. The first dielectric filter layer 31 includes a first dielectric layer and a second dielectric layer alternately disposed along the thickness direction of the first substrate. The layer of the first dielectric filter layer 31 closer to the first substrate is the first dielectric layer, and the layer of the first dielectric filter layer 31 farther from the first substrate is the second dielectric layer. The refractive index of the first dielectric layer is less than the refractive index of the second dielectric layer.

[0071] In an exemplary embodiment, the first dielectric filter layer 31 may include a dozen or more first dielectric layers and second dielectric layers stacked sequentially along the thickness direction of the first substrate 101. For example, the first dielectric filter layer 31 may include 10, 11, 12, 13, 14, or other numbers of first dielectric layers and second dielectric layers.

[0072] In an exemplary embodiment, the material of the first dielectric layer may include inorganic materials, such as silicon dioxide (SiO2) and magnesium fluoride (MgF2).

[0073] In an exemplary embodiment, the material of the second dielectric layer may include at least one of inorganic materials, metal oxides, and metal sulfides. For example, inorganic materials may include silicon nitride (SiN), metal oxides may include titanium dioxide (TiO2), titanium pentoxide (Ti2O5), niobium pentoxide (Nb2O5), zirconium oxide (ZrO2), yttrium trioxide (Y2O3), etc., and metal sulfides may include zinc sulfide (ZnS).

[0074] The first dielectric filter layer of the display panel in this embodiment uses the principle of light interference in the dielectric layer to filter light, allowing light of a specific color to pass through and light of a specific color to be reflected.

[0075] In an exemplary embodiment, the transmittance of the first dielectric filter layer 31 is greater than or equal to 90%, preventing the first dielectric filter layer 31 from absorbing light emitted from the light-emitting substrate. For example, the transmittance of the first dielectric filter layer 31 to both the first color light and the second color light is greater than or equal to 90%.

[0076] In an exemplary embodiment, the first dielectric filter layer includes seven alternating layers of first dielectric layers and seven layers of second dielectric layers. The dielectric layers in the first dielectric filter layer are numbered 1 to 14 along the direction away from the first substrate 101. Among the 14 dielectric layers, the odd-numbered layers are first dielectric layers and the even-numbered layers are second dielectric layers. The material of the first dielectric layer is silicon dioxide (SiO2), and the material of the second dielectric layer is niobium pentoxide (Nb2O5).

[0077] As shown in Table 1, the thickness of the first dielectric layer is 22.77 nm, the thickness of the second dielectric layer is 41.45 nm, the thickness of the third dielectric layer is 38.34 nm, the thickness of the fourth dielectric layer is 58.56 nm, the thickness of the fifth dielectric layer is 55.06 nm, the thickness of the sixth dielectric layer is 45.19 nm, the thickness of the seventh dielectric layer is 60.69 nm, the thickness of the eighth dielectric layer is 54.1 nm, the thickness of the ninth dielectric layer is 51.43 nm, the thickness of the tenth dielectric layer is 56.16 nm, the thickness of the eleventh dielectric layer is 55.74 nm, the thickness of the twelfth dielectric layer is 46.65 nm, the thickness of the thirteenth dielectric layer is 69.19 nm, and the thickness of the fourteenth dielectric layer is 26.38 nm.

[0078] A light transmission simulation experiment was conducted on the first dielectric filter layer with the above-mentioned 14-layer dielectric structure. The transmittance of the first dielectric filter layer to the first ray (red light) and the second ray (green light) is greater than or equal to 90%, and the reflectance of the first dielectric filter layer to the third ray (blue light) is greater than or equal to 95%.

[0079] Table 1 Thickness of the dielectric layer in the first dielectric filter layer

[0080]

[0081] In an exemplary embodiment, the second substrate 200 includes a second base 201 and a second structural layer 202 disposed on the side of the second base 201 near the first substrate 100. The second structural layer 202 includes at least a first color filter pattern 211, a second color filter pattern 212, a third color filter pattern 213, and a black matrix (not shown in the figure). The first color filter pattern 211 is configured to transmit at least a first color of light, and the first color filter pattern 211 overlaps with the orthographic projection of the first dielectric filter layer 31 on the first base 101. The second color filter pattern 212 is configured to transmit at least a second color of light, and the second color filter pattern 212 overlaps with the orthographic projection of the first dielectric filter layer 31 on the first base 101. The third color filter pattern 213 is configured to transmit at least a third color of light, and the third color filter pattern 213 does not overlap with the orthographic projection of the first dielectric filter layer 31 on the first base 101.

[0082] The display device in this application embodiment can filter the light emitted from the light-emitting substrate through a first dielectric filter layer, so that the first dielectric filter layer transmits first color light and second color light, and reflects third color light. The first color light and second color light transmitted by the first dielectric filter layer are incident on the first color filter pattern and the second color filter pattern, and then filtered by the first color filter pattern and the second color filter pattern, so that the first color filter pattern transmits the first color light and the second color filter pattern transmits the second color light, avoiding the first color filter pattern and the second color filter pattern from filtering the third color light, thereby reducing the thickness of the first color filter pattern and the second color filter pattern, reducing the absorption of light emitted from the light-emitting substrate by the first color filter pattern and the second color filter pattern, improving the light emission efficiency of the light-emitting substrate and the transmittance of the display device, thereby increasing the brightness of the display device and reducing the power consumption of the display device.

[0083] Figure 4 This is a cross-sectional structural diagram of a display panel according to an embodiment of this application. Wherein, Figure 4 The direction D3 shown is the thickness direction of the display panel. Figure 4 The directions D1 and D3 shown intersect each other. In an exemplary embodiment, as... Figure 4 As shown, the display panel in this embodiment may include a first substrate 100 and a second substrate 200 disposed opposite to each other, and a liquid crystal layer (not shown in the figure) disposed between the first substrate 100 and the second substrate 200. The first substrate 100 may include a first structural layer 102 disposed on the side of the first substrate 101 facing the second substrate 200, and the second substrate 200 may include a second structural layer 202 disposed on the side of the second substrate 201 facing the first substrate 100.

[0084] In an exemplary embodiment, the first structural layer 102 includes a first dielectric filter layer 31 disposed on the side of the first substrate 101 near the second substrate 200, a first organic dielectric layer 12 disposed on the side of the first dielectric filter layer 31 away from the first substrate 101, a first inorganic dielectric layer 13 disposed on the side of the first organic dielectric layer 12 away from the first substrate 101, an active layer 14 disposed on the side of the first inorganic dielectric layer 13 away from the first substrate 101, a gate insulating layer 15 disposed on the side of the active layer 14 away from the first substrate 101, a gate 16 disposed on the side of the gate insulating layer 15 away from the first substrate 101, and a gate 16 disposed on the side of the gate 16 away from the first substrate. The system comprises a second inorganic dielectric layer 17 on one side of substrate 101, a first electrode 18 and a second electrode 19 disposed on the side of the second inorganic dielectric layer 17 away from substrate 101, a second dielectric filter layer 32 disposed on the side of the first electrode 18 and the second electrode 19 away from substrate 101, a second organic dielectric layer 20 disposed on the side of the second dielectric filter layer 32 away from substrate 101, a common electrode 21 disposed on the side of the second organic dielectric layer 20 away from substrate 101, a third inorganic dielectric layer 22 disposed on the side of the common electrode 21 away from substrate 101, and a pixel electrode 23 disposed on the side of the third inorganic dielectric layer 22 away from substrate 101. The active layer 14, gate 16, first electrode 18, and second electrode 19 can form a thin-film transistor for a pixel driving circuit.

[0085] In an exemplary embodiment, the first dielectric filter layer 31 includes a first filter region 311 and a second filter region 312. The first filter region 311 and the second filter region 312 of the first dielectric filter layer 31 both have a transmittance of greater than or equal to 90% for the first color light and the second color light, and a reflectance of greater than or equal to 95% for the third color light.

[0086] In an exemplary embodiment, the first filtering region 311 and the second filtering region 312 of the first dielectric filter layer 31 can both be block-shaped in cross-section parallel to the first substrate, such as circular, elliptical, triangular, rectangular, rhomboid, pentagonal, hexagonal, etc.

[0087] In an exemplary embodiment, a first via and a second via are formed in the second inorganic dielectric layer 17 and the gate insulating layer 15. Both the first via and the second via extend from the surface of the second inorganic dielectric layer 17 away from the first substrate 101 to the surface of the active layer 14 away from the first substrate 101. The first electrode 18 is connected to the active layer 14 through the first via, and the second electrode 19 is connected to the active layer 14 through the second via.

[0088] In an exemplary embodiment, a third via is formed in the second organic dielectric layer 20. The third via extends from the surface of the second organic dielectric layer 20 away from the first substrate 101 to the surface of the first electrode 18 away from the first substrate 101. The common electrode 21 is connected to the first electrode 18 through the third via. Specifically, for the first electrode 18 not covered by the second dielectric filter layer 32, the third via penetrates the second organic dielectric layer 20 and extends to the surface of the first electrode 18; for the first electrode 18 covered by the second dielectric filter layer 32, the third via penetrates both the second organic dielectric layer 20 and the second dielectric filter layer 32 and extends to the surface of the first electrode 18.

[0089] In an exemplary embodiment, the material of the gate 16 may include a conductive material, which, exemplary, may include a metal, a conductive metal oxide, a conductive polymer, a conductive composite material, or a combination thereof. Exemplarily, the metal may be selected from platinum, gold, silver, aluminum, chromium, nickel, copper, molybdenum, titanium, magnesium, calcium, barium, sodium, palladium, iron, manganese, or a combination thereof. Exemplarily, the conductive metal oxide may be selected from indium oxide, tin oxide, indium tin oxide, fluorine-doped tin oxide, aluminum-doped zinc oxide, gallium-doped zinc oxide, or a combination thereof. Exemplarily, the conductive polymer may be selected from polyaniline, polypyrrole, polythiophene, polyacetylene, poly(3,4-ephedrindioxythiophene) / polystyrene sulfonic acid (PEDOT / PSS), or a combination thereof, and may further contain dopants such as acids (e.g., hydrochloric acid, sulfuric acid, sulfonic acid, etc.), Lewis acids (e.g., phosphorus fluoride, arsenic fluoride, ferric chloride, etc.), halogens, alkali metals, etc. Exemplarily, the conductive composite material may be selected from conductive composite materials dispersed with carbon black, graphite powder, metal microparticles, etc.

[0090] In an exemplary embodiment, the materials of the first inorganic dielectric layer 13, the second inorganic dielectric layer 17, and the third inorganic dielectric layer 22 may include inorganic insulating materials. Exemplarily, the inorganic insulating material may include silicon oxide, silicon nitride, silicon oxynitride, or other inorganic insulating materials.

[0091] In an exemplary embodiment, the material of the active layer 14 may include at least one of metal oxide, low-temperature polycrystalline silicon, and amorphous silicon.

[0092] In an exemplary embodiment, the first electrode 18 and the second electrode 19 can serve as the source electrode and drain electrode of a thin-film transistor, respectively. The materials of the first electrode 18 and the second electrode 19 can include metals. Exemplarily, the materials of the first electrode 18 and the second electrode 19 can include at least one of gold (Au), silver (Ag), aluminum (Al), molybdenum (Mo), chromium (Cr), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or any alloy of these metals.

[0093] In an exemplary embodiment, the second dielectric filter layer 32 includes a third filter region 321 and a fourth filter region 322. The third filter region 321 overlaps with the orthographic projection of the second filter region 312 of the first dielectric filter layer 31 onto the first substrate 101, but does not overlap with the orthographic projection of the first filter region 311 of the first dielectric filter layer 31 onto the first substrate 101. The fourth filter regions 322 do not overlap with the orthographic projections of the first filter region 311 and the second filter region 312 of the first dielectric filter layer 31 onto the first substrate 101. Both the third filter region 321 and the fourth filter region 322 of the second dielectric filter layer 32 have a transmittance of greater than or equal to 90% for the second color light and the third color light, and a reflectance of greater than or equal to 95% for the first color light.

[0094] In an exemplary embodiment, the third filtering region 321 and the fourth filtering region 322 of the second dielectric filter layer 32 can be block-shaped in cross-section parallel to the first substrate, such as circular, elliptical, triangular, rectangular, rhomboid, pentagonal, hexagonal, etc.

[0095] In an exemplary embodiment, the materials of the common electrode 21 and the pixel electrode 23 may include transparent conductive materials. For example, the materials of the common electrode 21 and the pixel electrode 23 may include indium tin oxide (ITO), indium zinc oxide (IZO), indium tin zinc oxide (ITZO), or aluminum-doped zinc oxide (AZO).

[0096] In an exemplary embodiment, the second structural layer 202 includes a first color filter pattern 211, a second color filter pattern 212, a third color filter pattern 213, and a black matrix (not shown in the figure) disposed on the side of the second substrate 201 near the first substrate 100.

[0097] In an exemplary embodiment, the first color filter pattern 211 overlaps with the orthographic projection of the first filtering region 311 of the first dielectric filter layer 31 onto the first substrate 101, but does not overlap with the orthographic projections of the second filtering region 312 of the first dielectric filter layer 31, the third filtering region 321 of the second dielectric filter layer 32, and the fourth filtering region 322 onto the first substrate 101. The first color filter pattern 211 is configured to transmit first color light L1 and not transmit other color light, such as second color light L2 and third color light L3.

[0098] In an exemplary embodiment, the thickness of the first color filter pattern 211 is greater than or equal to 0.5 micrometers and less than or equal to 1.2 micrometers. For example, the thickness of the first color filter pattern 211 is greater than or equal to 0.5 micrometers and less than or equal to 1.2 micrometers.

[0099] In an exemplary embodiment, the second color filter pattern 212 overlaps with the orthographic projection of the second filter region 312 of the first dielectric filter layer 31 and the third filter region 321 of the second dielectric filter layer 32 on the first substrate 101, but does not overlap with the orthographic projection of the first filter region 311 of the first dielectric filter layer 31 and the fourth filter region 322 of the second dielectric filter layer 32 on the first substrate 101.

[0100] In an exemplary embodiment, the thickness of the second color filter pattern 212 is greater than or equal to 0.5 micrometers and less than or equal to 1.2 micrometers. For example, the thickness of the second color filter pattern 212 is greater than or equal to 0.5 micrometers and less than or equal to 1.2 micrometers.

[0101] In an exemplary embodiment, the display panel of this application further includes a planarization layer 50. The planarization layer 50 is disposed on the side of the first color filter pattern 211, the second color filter pattern 212, and the third color filter pattern 213 near the first substrate 101. The planarization layer 50 is integrally connected with the second color filter pattern 212 and comprises the same material. The light transmittance of the planarization layer 50 and the second color filter pattern 212 to the first color light, the second color light, and the third color light is greater than or equal to 95%. For example, the material of the planarization layer 50 can be a light-transmitting organic material.

[0102] In an exemplary embodiment, the third color filter pattern 213 overlaps with the orthographic projection of the fourth filter region 322 of the second dielectric filter layer 32 onto the first substrate 101, but does not overlap with the orthographic projections of the third filter region 321 of the second dielectric filter layer 32, the first filter region 311 of the first dielectric filter layer 31, and the second filter region 312 of the first dielectric filter layer 31 onto the first substrate 101; the third color filter pattern 213 is configured to transmit the third color light L3 and not transmit other color light, such as the first color light L1 and the second color light L2.

[0103] In an exemplary embodiment, the black matrix may be located on at least one side of the first color filter pattern 211, at least one side of the second color filter pattern 212, and at least one side of the third color filter pattern 213, to separate adjacent color filter patterns and prevent the emitted light from adjacent color filter patterns from interfering with each other.

[0104] In this embodiment, the display panel can filter the light incident on the first color filter pattern 211 through the first dielectric filter layer 31, so that the first color light L1 and the second color light L2 are incident on the first color filter pattern 211, avoiding the first color filter pattern 211 from filtering the third color light L3, and only filtering the second color light L2, thereby reducing the thickness of the first color filter pattern 211.

[0105] In this embodiment, the display panel can filter the light incident on the second color filter pattern 212 through the first dielectric filter layer 31 and the second dielectric filter layer 32, so that the second color light L2 is incident on the second color filter pattern 212, avoiding the second color filter pattern 212 from filtering the first color light L1 and the third color light L3, reducing the thickness of the second color filter pattern 212, or using a planar layer with a light transmittance of greater than or equal to 95% as the second color filter pattern 212.

[0106] In this embodiment of the application, the display panel can filter the light incident on the third color filter pattern 213 through the second medium filter layer 32, so that the second color light L2 and the third color light L3 are incident on the third color filter pattern 213, thereby avoiding the third color filter pattern 213 from filtering the first color light L1 and reducing the thickness of the third color filter pattern 213.

[0107] In this embodiment of the application, the display panel reduces the thickness of the first color filter pattern 211, the second color filter pattern 212, and the third color filter pattern 213, or reduces the thickness of the first color filter pattern 211 and the third color filter pattern 213 so that the second color filter pattern 212 and the planarization layer use the same material. This reduces the absorption of light emitted from the light-emitting substrate by the first color filter pattern 211, the second color filter pattern 212, and the third color filter pattern 213, improves the light emission efficiency of the light emitted from the light-emitting substrate, and thus improves the brightness of the display panel and reduces the power consumption of the display panel.

[0108] In exemplary embodiments, the display panel of this application may include at least one of the following: curved ADS (Advanced Super Dimension Switch) display panel, HADS (High Aperture Advanced-Super Dimensional Switching) display panel, VA (Vertical Alignment) display panel, IPS (In-P lane Switching) display panel, and TN (Twisted Nematic) display panel.

[0109] In some embodiments, the first dielectric filter layer may have a transmittance of 90% or more for both the second and third color light rays and a reflectance of 95% or more for the first color light rays; or, the first dielectric filter layer may have a transmittance of 90% or more for both the first and third color light rays and a reflectance of 95% or more for the second color light rays; or, the first dielectric filter layer may have a transmittance of 90% or more for both the first color light rays and a reflectance of 95% or more for both the second and third color light rays; or, the first dielectric filter layer may have a transmittance of 90% or more for both the second color light rays and a reflectance of 95% or more for both the first and third color light rays; or, the first dielectric filter layer may have a transmittance of 90% or more for both the third color light rays and a reflectance of 95% or more for both the first and second color light rays.

[0110] In an exemplary embodiment, at least a portion of the light transmitted by the first dielectric filter layer is the same color as at least a portion of the light transmitted by the overlapping color filter pattern. For example, if the first dielectric filter layer has a transmittance of greater than or equal to 90% for both the second and third color light, and a reflectance of greater than or equal to 95% for the first color light, the first dielectric filter layer overlaps with the orthographic projections of the second and third color filter patterns on the first substrate, but does not overlap with the orthographic projection of the first color filter pattern on the first substrate. The second dielectric filter layer has a transmittance of ≥90% for both the first and second color light rays and a reflectance of ≥95% for the third color light ray. The second dielectric filter layer overlaps with the orthographic projections of the first and second color filter patterns on the first substrate, but does not overlap with the orthographic projections of the third color filter pattern on the first substrate. Alternatively, the second dielectric filter layer has a transmittance of ≥90% for both the first and third color light rays and a reflectance of ≥95% for the second color light ray. The second dielectric filter layer overlaps with the orthographic projections of the first and third color filter patterns on the first substrate, but does not overlap with the orthographic projections of the second color filter pattern on the first substrate. Alternatively, the second dielectric filter layer has a transmittance of ≥90% for both the first color light rays and a reflectance of ≥95% for both the second and third color light rays. The second dielectric filter layer overlaps with the orthographic projections of the first color filter pattern on the first substrate, but does not overlap with the orthographic projections of the second and third color filter patterns on the first substrate.

[0111] The following description uses the fabrication process of a display substrate as an example. The "patterning process" described in this disclosure includes, for metallic, inorganic, or transparent conductive materials, processes such as photoresist coating, mask exposure, development, etching, and photoresist stripping; for organic materials, it includes processes such as organic material coating, mask exposure, and development. Deposition can be performed using any one or more of sputtering, evaporation, and chemical vapor deposition; coating can be performed using any one or more of spraying, spin coating, and inkjet printing; etching can be performed using any one or more of dry etching and wet etching. This disclosure does not limit the methods used. A "thin film" refers to a thin film made of a certain material on a substrate using deposition, coating, or other processes. If the "thin film" does not require a patterning process during the entire fabrication process, it can also be called a "layer." If the "thin film" requires a patterning process during the entire fabrication process, it is called a "thin film" before the patterning process and a "layer" after the patterning process. The "layer" after the patterning process contains at least one "pattern." The phrase "A and B are arranged in the same layer" in this disclosure means that A and B are formed simultaneously through the same patterning process, and the "thickness" of the film layer is the dimension of the film layer in the direction perpendicular to the display substrate. In the exemplary embodiments of this disclosure, "the orthographic projection of B is within the range of the orthographic projection of A" or "the orthographic projection of A includes the orthographic projection of B" means that the boundary of the orthographic projection of B falls within the boundary range of the orthographic projection of A, or the boundary of the orthographic projection of A overlaps with the boundary of the orthographic projection of B.

[0112] In an exemplary embodiment, the manufacturing process of the display panel may include the following operations.

[0113] (11) Forming alignment marks and a first dielectric filter layer. In an exemplary embodiment, forming alignment marks and a first dielectric filter layer includes: firstly providing a first substrate 101, the first substrate 101 including a first sub-pixel region 110, a second sub-pixel region 120 and a third sub-pixel region 130; subsequently, depositing a marking film on the first substrate 101, and patterning the marking film using a patterning process to form alignment marks; finally, forming a first dielectric filter layer 31 on the first substrate 101 using a patterning etching process, such as... Figure 5a As shown.

[0114] In an exemplary embodiment, the alignment mark is located in a non-display area of ​​the display substrate, and the orthographic projection of the alignment mark on the first substrate 101 does not overlap with the first sub-pixel area 110, the second sub-pixel area 120, and the third sub-pixel area 130 of the first substrate 101. The alignment mark is used for alignment with the mask subsequently formed for the first dielectric filter layer 31.

[0115] In an exemplary embodiment, the alignment markers include metallic materials, such as molybdenum (Mo), aluminum (Al), titanium (Ti), and other metallic materials.

[0116] In an exemplary embodiment, a first dielectric filter layer 31 is located in a first sub-pixel region 110 and a second sub-pixel region 120 of a first substrate 101. The first dielectric filter layer 31 includes a first filter region 311 and a second filter region 312, whereby the first filter region 311 is located in the first sub-pixel region 110 of the first substrate 101, and the second filter region 312 is located in the second sub-pixel region 120 of the first substrate 101.

[0117] In an exemplary embodiment, both the first filtering region 311 and the second filtering region 312 of the first dielectric filter layer 31 have a transmittance of greater than or equal to 90% for the first color light and the second color light, and a reflectance of greater than or equal to 95% for the third color light. For example, the first color light can be red light, the second color light can be green light, and the third color light can be blue light.

[0118] In an exemplary embodiment, both the first filtering region 311 and the second filtering region 312 of the first dielectric filter layer 31 are configured to reflect the third color light to the light-emitting substrate, so that the reflected third color light can re-excite the light-emitting substrate, thereby increasing the light emission intensity of the light-emitting substrate. The light-emitting substrate is configured to provide the light emitted from the light-emitting substrate to the first substrate.

[0119] In an exemplary embodiment, the first filtering region 311 and the second filtering region 312 of the first dielectric filter layer 31 can both be block-shaped in cross-section parallel to the first substrate, such as circular, elliptical, triangular, rectangular, rhomboid, pentagonal, hexagonal, etc.

[0120] (12) Forming at least one thin-film transistor. In an exemplary embodiment, forming at least one thin-film transistor may include: depositing a first organic thin film on a first substrate 101 on the first substrate on which the aforementioned pattern is formed, and patterning the first organic thin film using a patterning process to form a first organic dielectric layer 12 covering the first dielectric filter layer 31; subsequently, depositing a first inorganic thin film on the first organic dielectric layer 12, and patterning the first inorganic thin film using a patterning process to form a first inorganic dielectric layer 13 disposed on the first organic dielectric layer 12; subsequently, depositing a transparent semiconductor thin film on the first inorganic dielectric layer 13, and patterning the transparent semiconductor thin film using a patterning process to form at least one active layer 14 disposed on the first inorganic dielectric layer 13; subsequently, depositing a gate insulating material covering at least one active layer 14 on the first inorganic dielectric layer 13, and patterning the gate insulating material using a patterning process to form a gate insulating layer 15 covering at least one active layer 14; subsequently, depositing a first conductive thin film on the gate insulating layer 15. The first conductive film is patterned using a patterning process to form at least one gate 16 disposed on a gate insulating layer 15, with the gate 16 overlapping with the orthographic projection of an active layer 14 onto a first substrate 101. Subsequently, a second inorganic film is deposited on the gate insulating layer 15 and patterned using a patterning process to form a second inorganic dielectric layer 17 covering at least one gate 16. Then, an etching process is used to form at least one first via and at least one second via in the second inorganic dielectric layer 17 and the gate insulating layer 15, each exposing the surface of an active layer 14. Finally, a second conductive film is deposited on the second inorganic dielectric layer 17 and patterned using a patterning process to form at least one first electrode 18 and at least one second electrode 19 disposed on the second inorganic dielectric layer 17. The first electrode 18 is connected to the exposed active layer 14 through the first via, and the second electrode 19 is connected to the exposed active layer 14 through the second via. Figure 5b As shown. The active layer 14, gate 16, first electrode 18, and second electrode 19 form a thin-film transistor (TFT) for a pixel driving circuit. The first electrode 18 can serve as the source electrode of the TFT, and the second electrode 19 can serve as the drain electrode; alternatively, the first electrode 18 can serve as the drain electrode, and the second electrode 19 can serve as the source electrode.

[0121] In an exemplary embodiment, at least one thin-film transistor is projected onto the first substrate 101 in the first sub-pixel region 110, serving as a pixel driving circuit for the first sub-pixel; at least one thin-film transistor is projected onto the first substrate 101 in the second sub-pixel region 120, serving as a pixel driving circuit for the second sub-pixel; and at least one thin-film transistor is projected onto the first substrate 101 in the third sub-pixel region 130, serving as a pixel driving circuit for the third sub-pixel.

[0122] In an exemplary embodiment, the material of the active layer 14 may include at least one of metal oxide, low-temperature polycrystalline silicon, and amorphous silicon.

[0123] In an exemplary embodiment, the metal oxide may include indium gallium zinc oxide (IGZO), indium gallium oxide (InGaO), indium tin oxide (ITO), indium zinc oxide (IZO), etc.

[0124] In an exemplary embodiment, the second inorganic dielectric layer 17 may include a first inorganic layer and a second inorganic layer stacked together, with the second inorganic layer located on the side of the first inorganic layer away from the first substrate. The material of the first inorganic layer may include silicon dioxide, and the material of the second inorganic layer may include silicon nitride.

[0125] Forming a second dielectric filter layer. In an exemplary embodiment, forming the second dielectric filter layer may include: forming a second dielectric filter layer 32 on the second inorganic dielectric layer 17 using a patterned etching process on the first substrate on which the aforementioned pattern is formed, such as... Figure 5c As shown.

[0126] In an exemplary embodiment, forming a second dielectric filter layer 32 on the second inorganic dielectric layer 17 using a patterned etching process may include: depositing a filter dielectric film on the second inorganic dielectric layer 17; subsequently, using an inductively coupled plasma (ICP) dry etching process to etch away the filter dielectric film corresponding to the first sub-pixel region 110 of the first substrate 101, exposing the second inorganic dielectric layer 17 corresponding to the first sub-pixel region 110, and retaining the filter dielectric films corresponding to the second sub-pixel region 120 and the third sub-pixel region 130 of the first substrate 101, thereby forming the second dielectric filter layer 32.

[0127] In an exemplary embodiment, during the etching process to remove the filter medium film, the etching depth can be monitored by an electrophoretic display (EPD) device in an inductively coupled plasma device. When etching reaches the surface of the second inorganic medium layer 17, etching is stopped, thereby removing the filter medium film corresponding to the first sub-pixel area 110. Alternatively, an over-etching process can be used on the filter medium film, that is, after etching to the surface of the second inorganic medium layer 17, etching of the second inorganic medium layer 17 continues for a period of time to ensure that the filter medium film corresponding to the first sub-pixel area 110 is completely removed.

[0128] In an exemplary embodiment, the orthographic projection of the second dielectric filter layer 32 onto the first substrate 101 is located in the second sub-pixel region 120 and the third sub-pixel region 130 of the first substrate 101. The second dielectric filter layer 32 includes a third filter region 321 and a fourth filter region 322. The orthographic projection of the third filter region 321 onto the first substrate 101 is located in the second sub-pixel region 120 of the first substrate 101. The third filter region 321 overlaps with the orthographic projection of the second filter region 312 of the first dielectric filter layer 31 onto the first substrate 101, but does not overlap with the orthographic projection of the first filter region 311 of the first dielectric filter layer 31 onto the first substrate 101. The orthographic projection of the fourth filter region 322 onto the first substrate 101 is located in the third sub-pixel region 130 of the first substrate 101. The fourth filter region 322 does not overlap with the orthographic projections of the first filter region 311 and the second filter region 312 of the first dielectric filter layer 31 onto the first substrate 101.

[0129] In an exemplary embodiment, both the third filtering region 321 and the fourth filtering region 322 of the second dielectric filter layer 32 have a transmittance of greater than or equal to 90% for the second color light and the third color light, and a reflectance of greater than or equal to 95% for the first color light. For example, the first color light can be red light, the second color light can be green light, and the third color light can be blue light.

[0130] In an exemplary embodiment, light passing through the first sub-pixel region 110 passes through the first filtering region 311 of the first dielectric filter layer 31 and exits from the first substrate; light passing through the second sub-pixel region 120 passes sequentially through the second filtering region 312 of the first dielectric filter layer 31 and the third filtering region 321 of the second dielectric filter layer 32 and exits from the first substrate; light passing through the third sub-pixel region 130 passes through the fourth filtering region 322 of the second dielectric filter layer 32 and exits from the first substrate.

[0131] In an exemplary embodiment, the third filtering region 321 and the fourth filtering region 322 of the second dielectric filter layer 32 can be block-shaped in cross-section parallel to the first substrate, such as circular, elliptical, triangular, rectangular, rhomboid, pentagonal, hexagonal, etc.

[0132] In an exemplary embodiment, the second dielectric filter layer 32 can be a multi-layer stacked structure. The second dielectric filter layer 32 includes a third dielectric layer and a fourth dielectric layer alternately disposed sequentially along the thickness direction of the first substrate. The layer of the second dielectric filter layer 32 closer to the first substrate is the third dielectric layer, and the layer of the second dielectric filter layer 32 farther from the first substrate is the fourth dielectric layer. The refractive index of the third dielectric layer is less than that of the fourth dielectric layer.

[0133] In an exemplary embodiment, the material of the third dielectric layer may include inorganic materials, such as silicon dioxide (SiO2) and magnesium fluoride (MgF2).

[0134] In an exemplary embodiment, the material of the fourth dielectric layer may include at least one of inorganic materials, metal oxides, and metal sulfides. For example, inorganic materials may include silicon nitride (SiN), metal oxides may include titanium dioxide (TiO2), titanium trioxide (Ti2O5), niobium pentoxide (Nb2O5), zirconium oxide (ZrO2), yttrium trioxide (Y2O3), etc., and metal sulfides may include zinc sulfide (ZnS).

[0135] The second dielectric filter layer of the display panel in this embodiment uses the principle of light interference in the dielectric layer to achieve light filtering, allowing light of a specific color to pass through and reflecting light of a specific color.

[0136] In an exemplary embodiment, the second dielectric filter layer 32 has a transmittance of 90% or more for both the second color light and the third color light, thereby preventing the second dielectric filter layer 32 from absorbing the light emitted from the light-emitting substrate.

[0137] Forming a first substrate. In an exemplary embodiment, forming the first substrate may include: depositing a second organic thin film on the second dielectric filter layer 32 on the first substrate on which the aforementioned pattern is formed; patterning the second organic thin film using a patterning process to form a second organic dielectric layer 20 covering the second dielectric filter layer 32; subsequently, forming at least one third via in the second organic dielectric layer 20 using an etching process, wherein the third via exposes the surface of a first electrode 18; subsequently, depositing a third conductive thin film on the second organic dielectric layer 20; and patterning the third conductive thin film using a patterning process to form a third conductive layer 20 covering the second dielectric filter layer 32. An inorganic thin film is formed on the second organic dielectric layer 20, with at least one common electrode 21 connected to the exposed first electrode 18 via a third via. Subsequently, a third inorganic thin film is deposited on the second organic dielectric layer 20, and patterned using a patterning process to form a third inorganic dielectric layer 22 covering at least one common electrode 21. Finally, a fourth conductive thin film is deposited on the third inorganic dielectric layer 22, and patterned using a patterning process to form at least one pixel electrode 23 on the third inorganic dielectric layer 22. Figure 5d As shown.

[0138] In an exemplary embodiment, at least one common electrode 21 overlaps with the orthographic projection of the thin-film transistor formed above onto the first substrate. For example, at least one common electrode 21 overlaps with the orthographic projections of the first electrode 18, the active layer 14, and the gate 16 onto the first substrate. The common electrode 21 also overlaps with the orthographic projection of at least one of the first dielectric filter layer 31 and the second dielectric filter layer 32 onto the first substrate.

[0139] In an exemplary embodiment, the common electrode 21 is made of a transparent conductive material, such as indium tin oxide (ITO).

[0140] In an exemplary embodiment, at least one pixel electrode 23 overlaps with the orthographic projection of the common electrode 21 onto the first substrate. At least one pixel electrode 23 overlaps with the orthographic projection of the thin-film transistor formed thereon onto the first substrate. For example, at least one pixel electrode 23 overlaps with the orthographic projections of the first electrode 18, the active layer 14, and the gate 16 onto the first substrate. The pixel electrode 23 overlaps with the orthographic projection of at least one of the first dielectric filter layer 31 and the second dielectric filter layer 32 onto the first substrate.

[0141] In an exemplary embodiment, the pixel electrode 23 is made of a transparent conductive material, such as indium tin oxide (ITO).

[0142] Assemble the first substrate and the second substrate. In an exemplary embodiment, assembling the first substrate and the second substrate may include: providing a second substrate 200 on a first substrate on which the aforementioned pattern is formed. The second substrate 200 includes a second structural layer 202 disposed on a second substrate 201. The second structural layer 202 includes at least a first color filter pattern 211, a second color filter pattern 212, a third color filter pattern 213, and a black matrix (not shown in the figure), and a planarization layer 50 disposed on the side of the first color filter pattern 211, the second color filter pattern 212, and the third color filter pattern 213 near the first substrate 101. The planarization layer 50 is integrally connected with the second color filter pattern and includes the same material. The planarization layer 50 has a transmittance of greater than or equal to 95% for the first color light, the second color light, and the third color light. Subsequently, the second structural layer 202 on the second substrate 201 is oriented towards the first structural layer 102 on the first substrate 101. Finally, the first substrate 100 and the second substrate 200 are assembled together. Figure 4 As shown.

[0143] In an exemplary embodiment, the orthographic projection of the first color filter pattern 211 onto the first substrate 101 is located in the first sub-pixel region 110 of the first substrate 101. The first color filter pattern 211 overlaps with the orthographic projection of the first filter region 311 of the first dielectric filter layer 31 onto the first substrate 101, but does not overlap with the orthographic projections of the second filter region 312 of the first dielectric filter layer 31, the third filter region 321 of the second dielectric filter layer 32, and the fourth filter region 322 of the second dielectric filter layer 32 onto the first substrate 101. The first color filter pattern 211 is configured to transmit a first color light L1 and not transmit other color light, such as the second color light L2 and the third color light L3.

[0144] In an exemplary embodiment, the orthographic projection of the second color filter pattern 212 onto the first substrate 101 is located in the second sub-pixel region 120 of the first substrate 101. The second color filter pattern 212 overlaps with the orthographic projections of the second filter region 312 of the first dielectric filter layer 31 and the third filter region 321 of the second dielectric filter layer 32 onto the first substrate 101, but does not overlap with the orthographic projections of the first filter region 311 of the first dielectric filter layer 31 and the fourth filter region 322 of the second dielectric filter layer 32 onto the first substrate 101. The second color filter pattern 212 and the planarization layer 50 use the same material, and the transmittance of the first color light, the second color light, and the third color light is all greater than or equal to 95%.

[0145] In an exemplary embodiment, the orthographic projection of the third color filter pattern 213 on the first substrate 101 is located in the third sub-pixel region 130 of the first substrate 101. The orthographic projection of the third color filter pattern 213 and the fourth filter region 322 of the second dielectric filter layer 32 on the first substrate 101 overlaps, but does not overlap with the orthographic projections of the third filter region 321 of the second dielectric filter layer 32, the first filter region 311 and the second filter region 312 of the first dielectric filter layer 31 on the first substrate 101. The third color filter pattern 213 is configured to transmit the third color light L3 and not transmit other color light, such as the first color light L1 and the second color light L2.

[0146] In an exemplary embodiment, the black matrix may be located on at least one side of the first color filter pattern 211, at least one side of the second color filter pattern 212, and at least one side of the third color filter pattern 213, to separate adjacent color filter patterns and prevent the emitted light from adjacent color filter patterns from interfering with each other.

[0147] In an exemplary embodiment, light incident on the first sub-pixel region 110 of the first substrate 101 is filtered by the first filtering region 311 of the first dielectric filter layer 31, transmitting first color light L1 and second color light L2. The first color light L1 and second color light L2 then exit onto the first color filter pattern 211 of the second substrate 200, where they are filtered and the first color light L1 is transmitted. In this embodiment, the display panel filters the light incident on the first color filter pattern 211 through the first filtering region 311 of the first dielectric filter layer 31, allowing the first color light L1 and second color light L2 to be incident on the first color filter pattern 211, while reflecting the third color light L3. This avoids the first color filter pattern 211 filtering the third color light L3, only filtering the second color light L2, reducing the thickness of the first color filter pattern 211, thereby reducing the absorption of light emitted from the light-emitting substrate by the first color filter pattern 211 and improving the light extraction efficiency of the light emitted from the light-emitting substrate. For example, the thickness of the first color filter pattern 211 can be greater than or equal to 0.5 micrometers and less than or equal to 1.2 micrometers.

[0148] In an exemplary embodiment, light incident on the second sub-pixel region 120 of the first substrate 101 is filtered by the second filter region 312 of the first dielectric filter layer 31, and transmits the first color light L1 and the second color light L2. The first color light L1 and the second color light L2 are then emitted to the third filter region 321 of the second dielectric filter layer 32. After being filtered by the third filter region 321, the second color light L2 is transmitted and emitted to the second color filter pattern 212 of the second substrate 200. The second color filter pattern 212 does not need to filter the second color light L2 and can directly transmit the second color light L2. In this embodiment, the display panel filters the light incident on the second color filter pattern 212 through the second filter region 312 of the first dielectric filter layer 31 and the third filter region 321 of the second dielectric filter layer 32, so that only the second color light L2 is incident on the second color filter pattern 212, and the first color light L1 and the third color light L3 are reflected, thereby avoiding the second color filter pattern 212 from filtering the first color light L1 and the third color light L3, reducing the thickness of the second color filter pattern 212. Alternatively, the material of the planarization layer can be used as the second color filter pattern 212, so that the second color filter pattern 212 is configured to transmit all colors of light, reducing the absorption of the light emitted from the light-emitting substrate by the second color filter pattern 212, and improving the light emission efficiency of the light emitted from the light-emitting substrate.

[0149] In an exemplary embodiment, light incident on the third sub-pixel region 130 of the first substrate 101 is filtered by the fourth filter region 322 of the second dielectric filter layer 32, transmitting second color light L2 and third color light L3. The second color light L2 and third color light L3 then exit onto the third color filter pattern 213 of the second substrate 200, where they are filtered and the third color light L3 is transmitted. In this embodiment, the display panel filters the light incident on the third color filter pattern 213 through the fourth filter region 322 of the second dielectric filter layer 32. This allows the second color light L2 and third color light L3 to be incident on the third color filter pattern 213, causing the first color light L1 to be reflected. This avoids the third color filter pattern 213 filtering the first color light L1, only filtering the second color light L2. This reduces the thickness of the third color filter pattern 213, reduces its absorption of light emitted from the light-emitting substrate, and improves the light extraction efficiency of the light emitted from the light-emitting substrate. For example, the thickness of the third color filter pattern 213 can be greater than or equal to 0.5 micrometers and less than or equal to 1.2 micrometers.

[0150] The display panel of this application embodiment can reduce the thickness of the first color filter pattern 211, the second color filter pattern 212, and the third color filter pattern 213 by using the first dielectric filter layer 31 and the second dielectric filter layer 32, or reduce the thickness of the first color filter pattern 211 and the third color filter pattern 213, and make the second color filter pattern 212 use a planarization layer material, thereby reducing the absorption of light emitted from the light-emitting substrate by the first color filter pattern 211, the second color filter pattern 212, and the third color filter pattern 213, improving the light emission efficiency of the light emitted from the light-emitting substrate, thereby improving the brightness of the display panel and reducing the power consumption of the display panel.

[0151] Figure 6 This is a cross-sectional structural diagram of another display panel according to an embodiment of this application. In an exemplary embodiment, such as Figure 6 As shown, the structure of the display panel in this exemplary embodiment is similar to... Figure 4 The display panels shown are essentially the same, except that the second dielectric filter layer of this exemplary embodiment includes a first sub-dielectric filter layer 41 and a second sub-dielectric filter layer 42. The first sub-dielectric filter layer 41 overlaps with the orthographic projection of the first filtering region 311 of the first dielectric filter layer 31 onto the first substrate 101, but does not overlap with the orthographic projection of the second filtering region 312 of the first dielectric filter layer 31 onto the first substrate 101. The second sub-dielectric filter layer 42 does not overlap with the orthographic projection of the first filtering region 311 and the second filtering region 312 of the first dielectric filter layer 31 onto the first substrate 101.

[0152] In an exemplary embodiment, both the first sub-medium filter layer 41 and the second sub-medium filter layer 42 have a transmittance of greater than or equal to 90% for the first color light and the third color light, and a reflectance of greater than or equal to 95% for the second color light.

[0153] In an exemplary embodiment, the first sub-medium filter layer 41 and the second sub-medium filter layer 42 may be block-shaped in cross-section parallel to the first substrate, such as circular, elliptical, triangular, rectangular, rhomboid, pentagonal, hexagonal, etc.

[0154] In an exemplary embodiment, the first color filter pattern 211 overlaps with the orthographic projections of the first filtering regions 311 of the first sub-medium filter layer 41 and the first filtering region 311 of the first dielectric filter layer 31 onto the first substrate 101, but does not overlap with the orthographic projection of the second sub-medium filter layer 42 onto the first substrate 101. The second color filter pattern 212 does not overlap with the orthographic projections of the first sub-medium filter layer 41 and the second sub-medium filter layer 42 onto the first substrate 101, but overlaps with the orthographic projection of the second filtering region 312 of the first dielectric filter layer 31 onto the first substrate 101. The third color filter pattern 213 overlaps with the orthographic projection of the second sub-medium filter layer 42 onto the first substrate 101, but does not overlap with the orthographic projections of the first filtering regions 311 and the second filtering regions 312 of the first dielectric filter layer 41 and the first filtering region 312 of the first dielectric filter layer 31 onto the first substrate 101.

[0155] In an exemplary embodiment, the display panel of this application further includes a planarization layer 50. The planarization layer 50 is disposed on the side of the first color filter pattern 211, the second color filter pattern 212, and the third color filter pattern 213 near the first substrate 101. The planarization layer 50 is integrally connected with the first color filter pattern 211 and comprises the same material. The light transmittance of the planarization layer 50 and the first color filter pattern 211 to the first color light, the second color light, and the third color light is greater than or equal to 95%. For example, the material of the planarization layer 50 can be a light-transmitting organic material.

[0156] In an exemplary embodiment, the thickness of the second color filter pattern 212 is greater than or equal to 0.5 micrometers and less than or equal to 1.2 micrometers.

[0157] In an exemplary embodiment, the thickness of the third color filter pattern 213 is greater than or equal to 0.5 micrometers and less than or equal to 1.2 micrometers.

[0158] In this embodiment of the application, the display panel can filter the light incident on the first color filter pattern 211 through the first dielectric filter layer 31 and the first sub-dielectric filter layer 41, so that the first color light L1 is incident on the first color filter pattern 211, and the first color filter pattern 211 avoids filtering the second color light L2 and the third color light L3, thereby reducing the thickness of the first color filter pattern 211. Alternatively, the material of the planarization layer can be used as the first color filter pattern 211.

[0159] In this embodiment of the application, the display panel can filter the light incident on the second color filter pattern 212 through the first medium filter layer 31, so that the first color light L1 and the second color light L2 are incident on the second color filter pattern 212, and the second color filter pattern 212 is prevented from filtering the third color light L3, thereby reducing the thickness of the second color filter pattern 212.

[0160] In this embodiment, the display panel can filter the light incident on the third color filter pattern 213 through the second sub-medium filter layer 42, so that the first color light L1 and the third color light L3 are incident on the third color filter pattern 213, thereby avoiding the third color filter pattern 213 from filtering the second color light L2 and reducing the thickness of the third color filter pattern 213.

[0161] In this embodiment of the application, the display panel reduces the thickness of the first color filter pattern 211, the second color filter pattern 212, and the third color filter pattern 213, or reduces the thickness of the second color filter pattern 212 and the third color filter pattern 213, so that the first color filter pattern 211 adopts a planarization layer material. This reduces the absorption of light emitted from the light-emitting substrate by the first color filter pattern 211, the second color filter pattern 212, and the third color filter pattern 213, improves the light emission efficiency of the light emitted from the light-emitting substrate, and thus improves the brightness of the display panel and reduces the power consumption of the display panel.

[0162] Figure 7 This is a schematic cross-sectional view of another display panel according to an embodiment of this application. In an exemplary embodiment, such as... Figure 7 As shown, the structure of the display panel in this exemplary embodiment is similar to... Figure 4 The display panels shown are essentially the same, except that in this exemplary embodiment, the second dielectric filter layer 32 of the display panel does not overlap with the orthographic projection of the first filter region 311 and the second filter region 312 of the first dielectric filter layer 31 onto the first substrate 101. The transmittance of the second dielectric filter layer 32 to the third color light is greater than or equal to 90%, and the reflectance to the first color light and the second color light is greater than or equal to 95%.

[0163] In an exemplary embodiment, the first color filter pattern 211 overlaps with the orthographic projection of the first filtering region 311 of the first dielectric filter layer 31 onto the first substrate 101, but does not overlap with the orthographic projections of the second filtering region 312 and the second dielectric filter layer 32 of the first dielectric filter layer 31 onto the first substrate 101. The second color filter pattern 212 overlaps with the orthographic projection of the second filtering region 312 of the first dielectric filter layer 31 onto the first substrate 101, but does not overlap with the orthographic projections of the first filtering region 311 and the second dielectric filter layer 32 of the first dielectric filter layer 31 onto the first substrate 101. The third color filter pattern 213 overlaps with the orthographic projection of the second dielectric filter layer 32 onto the first substrate 101, but does not overlap with the orthographic projections of the first filtering region 311 and the second filtering region 312 of the first dielectric filter layer 31 onto the first substrate 101.

[0164] In an exemplary embodiment, the thickness of the first color filter pattern 211 is greater than or equal to 0.5 micrometers and less than or equal to 1.2 micrometers.

[0165] In an exemplary embodiment, the thickness of the second color filter pattern 212 is greater than or equal to 0.5 micrometers and less than or equal to 1.2 micrometers.

[0166] In an exemplary embodiment, the display panel of this application further includes a planarization layer 50. The planarization layer 50 is disposed on the side of the first color filter pattern 211, the second color filter pattern 212, and the third color filter pattern 213 near the first substrate 101. The planarization layer 50 and the third color filter pattern 213 are integrally connected and comprise the same material. The light transmittance of the planarization layer 50 and the third color filter pattern 213 to the first color light, the second color light, and the third color light is greater than or equal to 95%. For example, the material of the planarization layer 50 can be a light-transmitting organic material.

[0167] In this embodiment of the application, the display panel can filter the light incident on the first color filter pattern 211 through the first filter area 311 of the first medium filter layer 31, so that the first color light L1 and the second color light L2 are incident on the first color filter pattern 211, and the first color filter pattern 211 is prevented from filtering the third color light L3, thereby reducing the thickness of the first color filter pattern 211.

[0168] In this embodiment, the display panel can filter the light incident on the second color filter pattern 212 through the second filter area 312 of the first dielectric filter layer 31, so that the first color light L1 and the second color light L2 are incident on the second color filter pattern 212, and the second color filter pattern 212 is prevented from filtering the third color light L3, thereby reducing the thickness of the second color filter pattern 212.

[0169] In this embodiment of the application, the display panel can filter the light incident on the third color filter pattern 213 through the second dielectric filter layer 32, so that the third color light L3 is incident on the third color filter pattern 213, avoiding the third color filter pattern 213 from filtering the first color light L1 and the second color light L2, reducing the thickness of the third color filter pattern 213, or using the material of the planarization layer as the third color filter pattern 213.

[0170] In this embodiment of the application, the display panel reduces the thickness of the first color filter pattern 211, the second color filter pattern 212, and the third color filter pattern 213, or reduces the thickness of the second color filter pattern 212 and the third color filter pattern 213, so that the first color filter pattern 211 adopts a planarization layer material. This reduces the absorption of light emitted from the light-emitting substrate by the first color filter pattern 211, the second color filter pattern 212, and the third color filter pattern 213, improves the light emission efficiency of the light emitted from the light-emitting substrate, and thus improves the brightness of the display panel and reduces the power consumption of the display panel.

[0171] Figure 8This is a schematic cross-sectional view of another display panel according to an embodiment of this application. In an exemplary embodiment, such as... Figure 8 As shown, the structure of the display panel in this exemplary embodiment is similar to... Figure 4 The display panels shown are basically the same, except that the display panel in this exemplary embodiment further includes a third dielectric filter layer and a third organic dielectric layer 24. The third dielectric filter layer is disposed on the side of the second organic dielectric layer 20 away from the first substrate 101, and the third organic dielectric layer 24 is disposed on the side of the third dielectric filter layer away from the first substrate 101. The common electrode 21 is disposed on the side of the third organic dielectric layer 24 away from the first substrate 101.

[0172] In an exemplary embodiment, the third dielectric filter layer includes a third sub-dielectric filter layer 43 and a fourth sub-dielectric filter layer 44. The third sub-dielectric filter layer 43 overlaps with the orthographic projection of the first filtering region 311 of the first dielectric filter layer 31 onto the first substrate 101, but does not overlap with the orthographic projections of the second filtering region 312 of the first dielectric filter layer 31, the third filtering region 321 of the second dielectric filter layer 32, and the fourth filtering region 322 of the second dielectric filter layer 32 onto the first substrate 101. The fourth sub-dielectric filter layer 44 overlaps with the orthographic projection of the fourth filtering region 322 of the second dielectric filter layer 32 onto the first substrate 101, but does not overlap with the orthographic projections of the first filtering region 311 and the second filtering region 312 of the first dielectric filter layer 31, or the third filtering region 321 of the second dielectric filter layer 32 onto the first substrate 101.

[0173] In an exemplary embodiment, both the third sub-medium filter layer 43 and the fourth sub-medium filter layer 44 have a transmittance of greater than or equal to 90% for the first color light and the third color light, and a reflectance of greater than or equal to 95% for the second color light.

[0174] In an exemplary embodiment, the cross-sectional shape of the third sub-medium filter layer 43 and the fourth sub-medium filter layer 44 parallel to the first substrate can be block-shaped, such as circular, elliptical, triangular, rectangular, rhomboid, pentagonal, hexagonal, etc.

[0175] In an exemplary embodiment, the display panel of this application further includes a planarization layer 50, which is disposed on the side of the second substrate near the first substrate 101. The planarization layer 50 is integrally connected with the first color filter pattern, the second color filter pattern, and the third color filter pattern, and comprises the same material. The planarization layer 50 has a light transmittance of greater than or equal to 95% for the first color light, the second color light, and the third color light. For example, the material of the planarization layer 50 can be a light-transmitting organic material.

[0176] In this embodiment of the application, the display panel can filter the light incident on the first color filter pattern through the first filter area 311 of the first dielectric filter layer 31 and the third sub-dielectric filter layer 43, so that the first color light L1 is incident on the first color filter pattern, and the first color filter pattern avoids filtering the second color light L2 and the third color light L3, thereby reducing the thickness of the first color filter pattern. Alternatively, the material of the planarization layer can be used as the first color filter pattern.

[0177] In this embodiment, the display panel can filter the light incident on the second color filter pattern through the second filter area 312 of the first dielectric filter layer 31 and the third filter area 321 of the second dielectric filter layer 32, so that the second color light L2 is incident on the second color filter pattern, avoiding the second color filter pattern from filtering the first color light L1 and the third color light L3, reducing the thickness of the second color filter pattern, or using the material of the planarization layer as the second color filter pattern.

[0178] In this embodiment of the application, the display panel can filter the light incident on the third color filter pattern through the fourth filter region 322 of the second dielectric filter layer 32 and the fourth sub-dielectric filter layer 44, so that the third color light L3 is incident on the third color filter pattern, avoiding the third color filter pattern from filtering the first color light L1 and the second color light L2, reducing the thickness of the third color filter pattern, or using the material of the planarization layer as the third color filter pattern.

[0179] The present application embodiments of the display panel reduce the thickness of the first color filter pattern, the second color filter pattern, and the third color filter pattern, or use a planarization layer material as the first color filter pattern, the second color filter pattern, and the third color filter pattern, thereby reducing the absorption of light emitted from the light-emitting substrate by the first color filter pattern, the second color filter pattern, and the third color filter pattern, improving the light emission efficiency of the light emitted from the light-emitting substrate, thereby improving the brightness of the display panel and reducing the power consumption of the display panel.

[0180] Figure 9 This is a schematic cross-sectional view of another display panel according to an embodiment of this application. In an exemplary embodiment, such as... Figure 9 As shown, the structure of the display panel in this exemplary embodiment is similar to... Figure 6 The display panels shown are basically the same, except that the display panel in this exemplary embodiment further includes a third dielectric filter layer and a third organic dielectric layer 24. The third dielectric filter layer is disposed on the side of the second organic dielectric layer 20 away from the first substrate 101, and the third organic dielectric layer 24 is disposed on the side of the third dielectric filter layer away from the first substrate 101. The common electrode 21 is disposed on the side of the third organic dielectric layer 24 away from the first substrate 101.

[0181] In an exemplary embodiment, the third dielectric filter layer 33 includes a third sub-dielectric filter layer 43 and a fourth sub-dielectric filter layer 44. The third sub-dielectric filter layer 43 overlaps with the orthographic projection of the second filtering region 312 of the first dielectric filter layer 31 onto the first substrate 101, but does not overlap with the orthographic projections of the first filtering region 311 of the first dielectric filter layer 31 and the first sub-dielectric filter layer 41 onto the first substrate 101. The fourth sub-dielectric filter layer 44 overlaps with the orthographic projection of the second sub-dielectric filter layer 42 onto the first substrate 101, but does not overlap with the orthographic projections of the first filtering region 311 and the second filtering region 312 of the first dielectric filter layer 31, or the first sub-dielectric filter layer 41 onto the first substrate 101.

[0182] In an exemplary embodiment, both the third sub-medium filter layer 43 and the fourth sub-medium filter layer 44 have a transmittance of greater than or equal to 90% for the second color light and the third color light, and a reflectance of greater than or equal to 95% for the first color light.

[0183] In an exemplary embodiment, the cross-sectional shape of the third sub-medium filter layer 43 and the fourth sub-medium filter layer 44 parallel to the first substrate can be block-shaped, such as circular, elliptical, triangular, rectangular, rhomboid, pentagonal, hexagonal, etc.

[0184] In an exemplary embodiment, the display panel of this application further includes a planarization layer 50, which is disposed on the side of the second substrate near the first substrate 101. The planarization layer 50 is integrally connected with the first color filter pattern, the second color filter pattern, and the third color filter pattern, and comprises the same material. The planarization layer 50 has a light transmittance of greater than or equal to 95% for the first color light, the second color light, and the third color light. For example, the material of the planarization layer 50 can be a light-transmitting organic material.

[0185] In this embodiment of the application, the display panel can filter the light incident on the first color filter pattern through the first filter area 311 of the first dielectric filter layer 31 and the first sub-dielectric filter layer 41, so that the first color light L1 is incident on the first color filter pattern, and the first color filter pattern avoids filtering the second color light L2 and the third color light L3, thereby reducing the thickness of the first color filter pattern. Alternatively, the material of the planarization layer can be used as the first color filter pattern.

[0186] In this embodiment of the application, the display panel can filter the light incident on the second color filter pattern through the second filter area 312 of the first dielectric filter layer 31 and the third sub-dielectric filter layer 43, so that the second color light L2 is incident on the second color filter pattern, avoiding the second color filter pattern from filtering the first color light L1 and the third color light L3, reducing the thickness of the second color filter pattern, or using the material of the planarization layer as the second color filter pattern.

[0187] In this embodiment of the application, the display panel can filter the light incident on the third color filter pattern through the second sub-medium filter layer 42 and the fourth sub-medium filter layer 44, so that the third color light L3 is incident on the third color filter pattern, avoiding the third color filter pattern from filtering the first color light L1 and the second color light L2, reducing the thickness of the third color filter pattern, or using the material of the planarization layer as the third color filter pattern.

[0188] The present application embodiments of the display panel reduce the thickness of the first color filter pattern, the second color filter pattern, and the third color filter pattern, or use a planarization layer material as the first color filter pattern, the second color filter pattern, and the third color filter pattern, thereby reducing the absorption of light emitted from the light-emitting substrate by the first color filter pattern, the second color filter pattern, and the third color filter pattern, improving the light emission efficiency of the light emitted from the light-emitting substrate, thereby improving the brightness of the display panel and reducing the power consumption of the display panel.

[0189] Figure 10 This is a schematic cross-sectional view of another display panel according to an embodiment of this application. In an exemplary embodiment, such as... Figure 10 As shown, the structure of the display panel in this exemplary embodiment is similar to... Figure 7 The display panels shown are basically the same, except that the display panel in this exemplary embodiment further includes a third dielectric filter layer and a third organic dielectric layer 24. The third dielectric filter layer is disposed on the side of the second organic dielectric layer 20 away from the first substrate 101, and the third organic dielectric layer 24 is disposed on the side of the third dielectric filter layer away from the first substrate 101. The common electrode 21 is disposed on the side of the third organic dielectric layer 24 away from the first substrate 101.

[0190] In an exemplary embodiment, the third dielectric filter layer 33 includes a third sub-dielectric filter layer 43 and a fourth sub-dielectric filter layer 44. The third sub-dielectric filter layer 43 overlaps with the orthographic projection of the first filtering region 311 of the first dielectric filter layer 31 onto the first substrate 101, but does not overlap with the orthographic projection of the second filtering region 312 of the first dielectric filter layer 31 and the second dielectric filter layer 32 onto the first substrate 101. The fourth sub-dielectric filter layer 44 overlaps with the orthographic projection of the second filtering region 3121 of the first dielectric filter layer 31 onto the first substrate 101, but does not overlap with the orthographic projection of the first filtering region 311 of the first dielectric filter layer 31 and the second dielectric filter layer 32 onto the first substrate 101.

[0191] In an exemplary embodiment, the third sub-medium filter layer 43 has a transmittance of greater than or equal to 90% for both the first and third color light rays, and a reflectance of greater than or equal to 95% for the second color light rays. The fourth sub-medium filter layer 44 has a transmittance of greater than or equal to 90% for both the second and third color light rays, and a reflectance of greater than or equal to 95% for the first color light rays.

[0192] In an exemplary embodiment, the cross-sectional shape of the third sub-medium filter layer 43 and the fourth sub-medium filter layer 44 parallel to the first substrate can be block-shaped, such as circular, elliptical, triangular, rectangular, rhomboid, pentagonal, hexagonal, etc.

[0193] In an exemplary embodiment, the display panel of this application further includes a planarization layer 50, which is disposed on the side of the second substrate near the first substrate 101. The planarization layer 50 is integrally connected with the first color filter pattern, the second color filter pattern, and the third color filter pattern, and comprises the same material. The planarization layer 50 has a light transmittance of greater than or equal to 95% for the first color light, the second color light, and the third color light. For example, the material of the planarization layer 50 can be a light-transmitting organic material.

[0194] In this embodiment of the application, the display panel can filter the light incident on the first color filter pattern through the first filter area 311 of the first dielectric filter layer 31 and the third sub-dielectric filter layer 43, so that the first color light L1 is incident on the first color filter pattern, and the first color filter pattern avoids filtering the second color light L2 and the third color light L3, thereby reducing the thickness of the first color filter pattern. Alternatively, the material of the planarization layer can be used as the first color filter pattern.

[0195] In this embodiment of the application, the display panel can filter the light incident on the second color filter pattern through the second filter area 312 of the first dielectric filter layer 31 and the fourth sub-dielectric filter layer 44, so that the second color light L2 is incident on the second color filter pattern, avoiding the second color filter pattern from filtering the first color light L1 and the third color light L3, reducing the thickness of the second color filter pattern, or using the material of the planarization layer as the second color filter pattern.

[0196] In this embodiment of the application, the display panel can filter the light incident on the third color filter pattern through the second dielectric filter layer 32, so that the third color light L3 is incident on the third color filter pattern, avoiding the third color filter pattern from filtering the first color light L1 and the second color light L2, reducing the thickness of the third color filter pattern, or using the material of the planarization layer as the third color filter pattern.

[0197] The present application embodiments of the display panel reduce the thickness of the first color filter pattern, the second color filter pattern, and the third color filter pattern, or use a planarization layer material as the first color filter pattern, the second color filter pattern, and the third color filter pattern, thereby reducing the absorption of light emitted from the light-emitting substrate by the first color filter pattern, the second color filter pattern, and the third color filter pattern, improving the light emission efficiency of the light emitted from the light-emitting substrate, thereby improving the brightness of the display panel and reducing the power consumption of the display panel.

[0198] This disclosure also provides a method for manufacturing a display panel, comprising:

[0199] A first dielectric filter layer is formed on a first substrate;

[0200] A second substrate is provided, the second substrate including a first color filter pattern, a second color filter pattern and a third color filter pattern, the first color filter pattern being configured to transmit at least a first color light, the second color filter pattern being configured to transmit at least a second color light, and the third color filter pattern being configured to transmit at least a third color light;

[0201] The first substrate and the second substrate are disposed together; wherein at least one of the first color filter pattern, the second color filter pattern and the third color filter pattern overlaps with the orthographic projection of the first dielectric filter layer on the first substrate, and at least a portion of the light transmitted by the first dielectric filter layer is the same color as at least a portion of the light transmitted by the overlapping color filter pattern.

[0202] This disclosure also provides a display device, including the display panel of the aforementioned exemplary embodiments. The display device can be any product or component with display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator.

[0203] The accompanying drawings in this disclosure only illustrate the structures relevant to this disclosure; other structures can be referenced to common designs. Unless otherwise specified, embodiments of this disclosure, i.e., features within the embodiments, can be combined with each other to obtain new embodiments.

[0204] Those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions disclosed herein without departing from the spirit and scope of the technical solutions disclosed herein, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A display panel, characterized in that, The system includes a first substrate and a second substrate disposed opposite to each other. The first substrate includes a first base and a first dielectric filter layer disposed on the side of the first substrate facing the second substrate. The second substrate includes a first color filter pattern, a second color filter pattern, and a third color filter pattern. The first color filter pattern is configured to transmit at least a first color light, the second color filter pattern is configured to transmit at least a second color light, and the third color filter pattern is configured to transmit at least a third color light. At least one of the first color filter pattern, the second color filter pattern, and the third color filter pattern overlaps with the orthographic projection of the first dielectric filter layer on the first base. At least a portion of the light transmitted by the first dielectric filter layer is the same color as at least a portion of the light transmitted by the overlapping color filter pattern. The first substrate further includes a second dielectric filter layer disposed on the side of the first dielectric filter layer away from the first substrate. The second dielectric filter layer overlaps with the orthographic projection of the first dielectric filter layer on the first substrate. One of the first color filter pattern, the second color filter pattern, and the third color filter pattern overlaps with the orthographic projections of the first dielectric filter layer and the second dielectric filter layer on the first substrate. The other two of the first color filter pattern, the second color filter pattern, and the third color filter pattern overlap with the orthographic projections of one of the first dielectric filter layer and the second dielectric filter layer, and the other of the first dielectric filter layer and the second dielectric filter layer, respectively, on the first substrate. At least a portion of the light transmitted by the first dielectric filter layer and the second dielectric filter layer is the same color, and at least a portion of the light reflected by the first dielectric filter layer and the second dielectric filter layer is different in color.

2. The display panel according to claim 1, characterized in that, The first dielectric filter layer has a transmittance of 90% or more for the transmitted at least a portion of the light.

3. The display panel according to claim 1, characterized in that, The first dielectric filter layer includes a first dielectric layer and a second dielectric layer alternately disposed along the thickness direction of the first substrate. The film layer of the first dielectric filter layer on the side closer to the first substrate is the first dielectric layer, and the film layer on the side of the first dielectric filter layer away from the first substrate is the second dielectric layer. The refractive index of the first dielectric layer is less than the refractive index of the second dielectric layer.

4. The display panel according to claim 1, characterized in that, The first medium filter layer overlaps with the orthographic projections of the first color filter pattern and the second color filter pattern on the first substrate, but does not overlap with the orthographic projection of the third color filter pattern on the first substrate. The transmittance of the first medium filter layer to the first color light and the second color light is greater than or equal to 90%.

5. The display panel according to claim 4, characterized in that, The reflectivity of the first dielectric filter layer to the third color light is greater than or equal to 95%.

6. The display panel according to claim 1, characterized in that, The first dielectric filter layer is in direct contact with the first substrate.

7. The display panel according to any one of claims 1 to 6, characterized in that, The second medium filter layer overlaps with the orthographic projections of the second color filter pattern and the third color filter pattern on the first substrate; the transmittance of the second medium filter layer to the second color light and the third color light is greater than or equal to 90%, and the reflectance of the second medium filter layer to the first color light is greater than or equal to 95%.

8. The display panel according to claim 7, characterized in that, It also includes a planarization layer, which is at least disposed on the side of the second color filter pattern close to the first substrate. The planarization layer is integrally connected with the second color filter pattern and includes the same material. The planarization layer has a transmittance of greater than or equal to 95% for the first color light, the second color light and the third color light.

9. The display panel according to claim 7, characterized in that, The thickness of the first color filter pattern is greater than or equal to 0.5 micrometers and less than or equal to 1.2 micrometers; and / or, the thickness of the second color filter pattern is greater than or equal to 0.5 micrometers and less than or equal to 1.2 micrometers.

10. The display panel according to claim 7, characterized in that, The first substrate further includes a third dielectric filter layer, which is disposed on the side of the second dielectric filter layer away from the first substrate. The third dielectric filter layer includes a third sub-dielectric filter layer and a fourth sub-dielectric filter layer. The third sub-dielectric filter layer overlaps with the orthographic projection of the first color filter pattern on the first substrate, and the fourth sub-dielectric filter layer overlaps with the orthographic projection of the third color filter pattern on the first substrate. The transmittance of the third sub-dielectric filter layer and the fourth sub-dielectric filter layer to the first color light and the third color light is both greater than or equal to 90%, and the reflectance of the second color light is both greater than or equal to 95%.

11. The display panel according to claim 10, characterized in that, It also includes a planarization layer, which is at least disposed on the side of the first color filter pattern and the third color filter pattern near the first substrate. The planarization layer is integrally connected to the first color filter pattern and the third color filter pattern and includes the same material. The light transmittance of the planarization layer to the first color light, the second color light and the third color light is greater than or equal to 95%.

12. The display panel according to any one of claims 1 to 6, characterized in that, The second dielectric filter layer includes a first sub-dielectric filter layer and a second sub-dielectric filter layer. The first sub-dielectric filter layer overlaps with the orthographic projection of the first color filter pattern on the first substrate, and the second sub-dielectric filter layer overlaps with the orthographic projection of the third color filter pattern on the first substrate. The first sub-dielectric filter layer and the second sub-dielectric filter layer both have a transmittance of greater than or equal to 90% for the first color light and the third color light, and a reflectance of greater than or equal to 95% for the second color light.

13. The display panel according to claim 12, characterized in that, It also includes a planarization layer, which is at least disposed on the side of the first color filter pattern close to the first substrate. The planarization layer is integrally connected with the first color filter pattern and includes the same material. The planarization layer has a transmittance of greater than or equal to 95% for the first color light, the second color light and the third color light.

14. The display panel according to claim 12, characterized in that, The thickness of the second color filter pattern is greater than or equal to 0.5 micrometers and less than or equal to 1.2 micrometers; and / or, the thickness of the third color filter pattern is greater than or equal to 0.5 micrometers and less than or equal to 1.2 micrometers.

15. The display panel according to claim 12, characterized in that, The first substrate further includes a third dielectric filter layer, which is disposed on the side of the second dielectric filter layer away from the first substrate. The third dielectric filter layer includes a third sub-dielectric filter layer and a fourth sub-dielectric filter layer. The third sub-dielectric filter layer overlaps with the orthographic projection of the second color filter pattern on the first substrate. The third sub-dielectric filter layer has a transmittance of greater than or equal to 90% for both the second and third color rays and a reflectance of greater than or equal to 95% for the first color ray. The fourth sub-dielectric filter layer overlaps with the orthographic projection of the third color filter pattern on the first substrate. The fourth sub-dielectric filter layer has a transmittance of greater than or equal to 90% for both the second and third color rays and a reflectance of greater than or equal to 95% for the first color ray.

16. The display panel according to claim 15, characterized in that, It also includes a planarization layer, which is at least disposed on the side of the second color filter pattern and the third color filter pattern close to the first substrate. The planarization layer is integrally connected with the second color filter pattern and the third color filter pattern and includes the same material. The light transmittance of the planarization layer to the first color light, the second color light and the third color light is greater than or equal to 95%.

17. The display panel according to any one of claims 1 to 6, characterized in that, The second medium filter layer overlaps with the orthographic projection of the third color filter pattern on the first substrate. The second medium filter layer has a transmittance of 90% or more for the third color light and a reflectance of 95% or more for the first color light and the second color light.

18. The display panel according to claim 17, characterized in that, It also includes a planarization layer, which is at least disposed on the side of the third color film pattern close to the first substrate. The planarization layer is integrally connected with the third color film pattern and includes the same material. The planarization layer has a transmittance of greater than or equal to 95% for the first color light, the second color light and the third color light.

19. The display panel according to claim 17, characterized in that, The thickness of the first color filter pattern is greater than or equal to 0.5 micrometers and less than or equal to 1.2 micrometers; and / or, the thickness of the second color filter pattern is greater than or equal to 0.5 micrometers and less than or equal to 1.2 micrometers.

20. The display panel according to claim 17, characterized in that, The first substrate further includes a third dielectric filter layer, which is disposed on the side of the second dielectric filter layer away from the first substrate. The third dielectric filter layer includes a third sub-dielectric filter layer and a fourth sub-dielectric filter layer. The third sub-dielectric filter layer overlaps with the orthographic projection of the first color filter pattern on the first substrate. The third sub-dielectric filter layer has a transmittance of greater than or equal to 90% for both the first color light and the third color light, and a reflectance of greater than or equal to 95% for the second color light. The fourth sub-dielectric filter layer overlaps with the orthographic projection of the second color filter pattern on the first substrate. The fourth sub-dielectric filter layer has a transmittance of greater than or equal to 90% for both the second color light and the third color light, and a reflectance of greater than or equal to 95% for the first color light.

21. The display panel according to claim 20, characterized in that, It also includes a planarization layer, which is at least disposed on the side of the first color filter pattern and the second color filter pattern close to the first substrate. The planarization layer is integrally connected with the first color filter pattern and the second color filter pattern and includes the same material. The planarization layer has a transmittance of greater than or equal to 95% for the first color light, the second color light and the third color light.

22. The display panel according to any one of claims 1 to 6, characterized in that, The first substrate further includes a pixel driving circuit disposed on the side of the first dielectric filter layer away from the first substrate. The pixel driving circuit includes at least one thin film transistor. The thin film transistor includes an active layer, a gate, a first electrode, and a second electrode. The active layer is disposed on the side of the first dielectric filter layer away from the first substrate. The gate is disposed on the side of the active layer away from the first substrate. The gate and the orthographic projection of the active layer on the first substrate overlap. The first electrode and the second electrode are disposed on the side of the gate away from the first substrate. The first electrode and the second electrode are respectively connected to the active layer.

23. The display panel according to any one of claims 1 to 6, characterized in that, The first substrate further includes alignment marks disposed on the first substrate. The alignment marks are disposed on the side of the at least one dielectric filter layer near the first substrate, and the alignment marks do not overlap with the orthographic projection of the at least one dielectric filter layer on the first substrate.

24. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 23.

25. A method for manufacturing a display panel, characterized in that, include: A first dielectric filter layer is formed on a first substrate; A second substrate is provided, the second substrate including a first color filter pattern, a second color filter pattern and a third color filter pattern, the first color filter pattern being configured to transmit at least a first color light, the second color filter pattern being configured to transmit at least a second color light, and the third color filter pattern being configured to transmit at least a third color light; The first substrate and the second substrate are disposed together; wherein at least one of the first color filter pattern, the second color filter pattern and the third color filter pattern overlaps with the orthographic projection of the first dielectric filter layer on the first substrate, and at least a portion of the light transmitted by the first dielectric filter layer is the same color as at least a portion of the light transmitted by the overlapping color filter pattern. A second medium filter layer is disposed on the side of the first medium filter layer away from the first substrate. The second medium filter layer overlaps with the orthographic projection of the first medium filter layer on the first substrate. One of the first color filter pattern, the second color filter pattern, and the third color filter pattern overlaps with the orthographic projections of the first medium filter layer and the second medium filter layer on the first substrate. The other two of the first color filter pattern, the second color filter pattern, and the third color filter pattern overlap with the orthographic projections of one of the first medium filter layer and the second medium filter layer, and the other of the first medium filter layer and the second medium filter layer, respectively, on the first substrate. At least a portion of the light transmitted by the first medium filter layer and the second medium filter layer is the same color, and at least a portion of the light reflected by the first medium filter layer and the second medium filter layer is different in color.

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