Display panel and display device

Abstract

The display panel comprises a liquid crystal box, a first optical assembly and a second optical assembly, and the first optical assembly and the second optical assembly are arranged on the two opposite sides of the liquid crystal box. At least one of the liquid crystal cell, the first optical component, and the second optical component includes: at least one antireflection layer; the antireflection layer is configured to reduce the ambient light reflectance of the display panel.

Description

Technical Field

[0001] This article relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] Liquid crystal displays (LCDs) have rapidly developed due to their small size, low power consumption, and zero radiation. An LCD panel consists of a thin film transistor (TFT) array substrate and a color filter (CF) substrate. Liquid crystal (LC) molecules are positioned between the array and CF substrates. Controlling the common and pixel electrodes creates an electric field that drives the liquid crystal deflection, achieving grayscale display. Summary of the Invention

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

[0004] In a first aspect, the present disclosure provides a display panel comprising: a liquid crystal cell and a first optical component and a second optical component disposed on opposite sides of the liquid crystal cell;

[0005] At least one of the liquid crystal cell, the first optical assembly, and the second optical assembly includes at least one anti-reflection layer; the anti-reflection layer is configured to reduce ambient light reflectivity of the display panel.

[0006] In an exemplary embodiment, the liquid crystal cell includes: a first substrate and a second substrate disposed to the cell, and a liquid crystal layer disposed between the first substrate and the second substrate;

[0007] At least one anti-reflection layer located in the liquid crystal cell is located in at least one structure among the first substrate, the second substrate, and the liquid crystal layer.

[0008] In an exemplary embodiment, the second substrate includes: a second substrate and a black matrix layer disposed on a side of the second substrate close to the liquid crystal layer, and the at least one anti-reflection layer located in the liquid crystal cell includes: a black matrix layer;

[0009] The reflectivity of the black matrix layer is less than 5%.

[0010] In an exemplary embodiment, the second substrate further includes: a filter layer, the filter layer includes: at least one filter, and the first substrate includes: data lines and scan lines;

[0011] The thickness of the black matrix layer is in the range of 1.15 microns to 1.5 microns, the length of the black matrix layer located between two adjacent filters along the first direction is greater than 3 microns, and the length of the black matrix layer located between two adjacent filters along the second direction is greater than 10 microns, wherein the first direction is the extension direction of the data line, and the second direction is the extension direction of the scan line.

[0012] In exemplary embodiments, the reflectivity of the black matrix layer is in a range of 4.85% to 4.95%.

[0013] In an exemplary embodiment, the second substrate includes: a second substrate and a black matrix layer and a filter layer disposed on a side of the second substrate close to the liquid crystal layer, the filter layer including: at least one filter; at least one anti-reflection layer located in the liquid crystal cell includes: a filter layer;

[0014] The orthographic projection of at least one optical filter on the second substrate at least partially overlaps with the orthographic projection of the black matrix layer on the second substrate;

[0015] The at least one optical filter is doped with a dispersant.

[0016] In an exemplary embodiment, the second substrate includes: a second substrate, a black matrix layer and a filter layer disposed on a side of the second substrate close to the liquid crystal layer, and a cover layer disposed on a side of the black matrix layer close to the liquid crystal layer; the at least one anti-reflection layer located in the liquid crystal cell includes: a cover layer;

[0017] At least one optical filter comprises: a first optical filter portion and a second optical filter portion, wherein an orthographic projection of the first optical filter portion on the second substrate is located within a range of an orthographic projection of the black matrix layer on the base, and an orthographic projection of the second optical filter portion on the second substrate does not overlap with an orthographic projection of the black matrix layer on the second substrate;

[0018] a first distance between a surface of the covering layer on the second filter portion away from the second substrate and the second substrate; a second distance between a surface of the covering layer on the first filter portion away from the second substrate and the second substrate; a third distance between a surface of the second filter portion away from the second substrate and the second substrate; and a fourth distance between a surface of the first filter portion away from the second substrate and the second substrate.

[0019] A difference between the second distance and the first distance is less than half of a difference between the fourth distance and the third distance.

[0020] In an exemplary embodiment, the average thickness of the cover layer is greater than 1.3 microns.

[0021] In an exemplary embodiment, when the resolution of the display panel is greater than a threshold resolution, the contrast ratio of the liquid crystal layer is greater than 1500;

[0022] When the resolution of the display panel is less than a threshold resolution, the contrast ratio of the liquid crystal layer is greater than 2000.

[0023] In an exemplary embodiment, the first optical assembly includes: a first polarizer, and the second optical assembly includes: a second polarizer, the first polarizer is located on a side of the first substrate away from the liquid crystal layer, and the second polarizer is located on a side of the second substrate away from the liquid crystal layer;

[0024] At least one of the first polarizer and the second polarizing layer comprises: an adhesive layer, at least one polarizing film layer, and a protective layer, wherein the adhesive layer is located on a side of the at least one polarizing film layer close to the liquid crystal layer, and the protective layer is located on a side of the at least one polarizing film layer away from the liquid crystal layer;

[0025] At least one anti-reflection film layer located in the first light-emitting component includes: a first polarizer, wherein the reflectivity of the protective layer of the first polarizer is less than 5%;

[0026] The at least one anti-reflection film layer located in the second light-emitting component includes: a second polarizer, and the reflectivity of the protective layer of the second polarizer is less than 5%.

[0027] In an exemplary embodiment, the at least one anti-reflection film layer located in the first light-emitting component includes: a first polarizer, wherein the reflectivity of the protective layer of the first polarizer is less than 0.5%, or is in the range of 1.7% to 3.2%;

[0028] The at least one anti-reflection film layer located in the second light-emitting component includes: a second polarizer, and the reflectivity of the protective layer of the second polarizer is less than 0.5%, or in the range of 1.7% to 3.2%.

[0029] In an exemplary embodiment, the first optical component further includes: a moth-eye film, the moth-eye film being located on a side of the first polarizer away from the first substrate; and the at least one anti-reflection film located on the first optical component includes: a moth-eye film;

[0030] The moth-eye film comprises: the transparent substrate and a protective film disposed on a side of the transparent substrate away from the first substrate, wherein a surface of the protective film away from the transparent substrate comprises: a plurality of protrusions arranged at intervals, at least one protrusion gradually widening in a direction approaching the transparent substrate;

[0031] The thickness of the transparent substrate is in the range of 70 micrometers to 90 micrometers, the interval between adjacent protrusions is in the range of 80 nanometers to 120 nanometers, and the height of at least one protrusion is in the range of 150 nanometers to 250 nanometers.

[0032] In an exemplary embodiment, the at least one anti-reflection film layer in the second optical assembly includes: a second polarizer;

[0033] The adhesive layer of the second polarizer is filled with a conductive agent, and the impedance of the adhesive layer of the second polarizer is less than 10 11 .

[0034] In an exemplary embodiment, the second optical component further comprises: at least one of the first optical film layer and the second optical film layer; the at least one anti-reflection film layer located in the second optical component comprises: at least one of the first optical film layer and the second optical film layer;

[0035] The first optical film layer and the second optical film layer are located between the second polarizer and the second substrate. The first optical film layer is located on a side of the second optical film layer close to the second polarizer, or on a side away from the second polarizer.

[0036] In an exemplary embodiment, the impedance of the first optical film layer is less than 10 10 ;

[0037] The refractive index of the first optical film layer is greater than the refractive index of any structure of the second polarizer and the second substrate.

[0038] In an exemplary embodiment, the refractive index of the first optical film layer is in the range of 2 to 2.5;

[0039] The thickness of the first optical film layer is in a range of 150 angstroms to 200 angstroms.

[0040] In an exemplary embodiment, the second optical film layer includes: a first inorganic film layer and a second inorganic film layer stacked in sequence along a direction in which the second polarizer approaches the second substrate;

[0041] The thickness of the first inorganic film layer is greater than that of the second inorganic film layer, and the refractive index of the second inorganic film layer is greater than that of the first inorganic film layer.

[0042] In an exemplary embodiment, the first inorganic film layer is made of a material comprising silicon dioxide, and the second inorganic film layer is made of a material comprising nickel pentoxide;

[0043] The thickness of the first inorganic film layer is in the range of 600 angstroms to 800 angstroms, and the refractive index is in the range of 1.4 to 1.5;

[0044] The second inorganic film layer has a thickness in a range of 50 angstroms to 70 angstroms, and a refractive index in a range of 2.2 to 2.4.

[0045] In an exemplary embodiment, the second optical film layer includes: a first inorganic film layer, a second inorganic film layer, a third inorganic film layer, and a fourth inorganic film layer stacked in sequence along a direction in which the second polarizer approaches the second substrate;

[0046] The refractive index of at least one of the second inorganic film layer and the fourth inorganic film layer is greater than the refractive index of at least one structure in the second substrate and the second polarizer, and the refractive index of at least one of the first inorganic film layer and the third inorganic film layer is less than the refractive index of at least one structure in the second substrate and the second polarizer.

[0047] In an exemplary embodiment, the material of at least one of the first inorganic film layer and the third inorganic film layer comprises silicon oxide, and the material of at least one of the second inorganic film layer and the fourth inorganic film layer comprises silicon nitride.

[0048] The refractive index of at least one of the first inorganic film layer and the third inorganic film layer is in the range of 1.4 to 1.5;

[0049] A refractive index of at least one of the second inorganic film layer and the fourth inorganic film layer is in a range of 1.9 to 2.1.

[0050] In an exemplary embodiment, the refractive index of the first optical film layer is greater than the refractive index of at least one inorganic film layer in the second optical film layer.

[0051] In an exemplary embodiment, the first optical assembly includes: a first polarizer, and the second optical assembly includes: a second polarizer, wherein the first polarizer is located on a side of the first substrate away from the liquid crystal layer, and the second polarizer is located on a side of the second substrate away from the liquid crystal layer;

[0052] At least one of the first polarizer and the second polarizer comprises: a plurality of polarizing film layers; at least one compensation film is provided between at least two polarizing film layers of one of the first polarizer and the second polarizer;

[0053] The optical axis of the compensation film is the same as the transmission axis of the liquid crystal molecules in the liquid crystal layer.

[0054] In an exemplary embodiment, when the liquid crystal molecules in the liquid crystal layer are positive liquid crystals, the compensation film includes an A-type compensation film and a C-type compensation film;

[0055] When the liquid crystal molecules in the liquid crystal layer are negative liquid crystals, the compensation film is a biaxial compensation film and includes two B-type compensation films, and the optical axes of the two B-type compensation films are different.

[0056] In an exemplary embodiment, a ratio of a target angle contrast of the display panel to a center contrast of the display panel is greater than 20%, wherein the target angle contrast is a ratio of the brightness of the display panel when the display panel is fully white to the brightness of the display panel when the display panel is fully black when the first angle is 45 degrees and the second angle is 0 degrees to 360 degrees, and the center contrast is a ratio of the brightness of the display panel when the display panel is fully white to the brightness of the display panel when the display panel is fully black when the first angle is 0 degrees and the second angle is 0 degrees, wherein the first angle is an angle between a first viewing angle and a plane where the display panel is located, and the second angle is an angle between a second viewing angle and a long axis of the display panel, the first viewing angle is outside the plane where the display panel is located, and the plane where the first viewing angle is located is perpendicular to the plane where the display panel is located, and the second viewing angle is within the plane where the display is located.

[0057] In a second aspect, the present disclosure further provides a display device comprising the above-mentioned display panel and a backlight module;

[0058] The backlight module is located on a side of the first optical component away from the liquid crystal layer.

[0059] Still other aspects will become apparent upon reading and understanding the accompanying drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] The accompanying drawings are used to provide an understanding of the technical solution of the present disclosure and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the technical solution of the present disclosure and do not constitute a limitation to the technical solution of the present disclosure.

[0061] Figure 1 A schematic structural diagram of a display panel provided in an embodiment of the present disclosure;

[0062] Figure 2 Schematic diagram of the structure of the liquid crystal cell;

[0063] Figure 3 is a structural diagram of a display panel;

[0064] Figure 4 is another structural schematic diagram of a display panel;

[0065] Figure 5 Schematic diagram of the structure of the moth eye membrane;

[0066] Figure 6 is another structural schematic diagram of a display panel;

[0067] Figure 7 Schematic diagram of the structure of the second optical film layer Figure 1 ;

[0068] Figure 8 Schematic diagram of the structure of the second optical film layer Figure 2 ;

[0069] Figure 9 Schematic diagram of two angles in angular contrast;

[0070] Figure 10A The curve change of the side viewing angle contrast attenuation of the display panel Figure 1 ;

[0071] Figure 10B for Figure 10A A curve showing the angular contrast of the display panel is provided;

[0072] Figure 11A The curve change of the side viewing angle contrast attenuation of the display panel Figure 2 ;

[0073] Figure 11B for Figure 11A A curve showing the angular contrast of the display panel is provided;

[0074] Figure 12 Schematic diagram of the structure of a display panel with a reflectivity ranging from 1.2% to 1.6%. DETAILED DESCRIPTION

[0075] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. Note that the embodiments can be implemented in a variety of different forms. A person of ordinary skill in the art can easily understand the fact that the methods and contents can be transformed into various forms without departing from the purpose and scope of the present disclosure. Therefore, the present disclosure should not be interpreted as being limited to the contents described in the following embodiments. Unless there is a conflict, the embodiments in the present disclosure and the features in the embodiments can be arbitrarily combined with each other. In order to keep the following description of the embodiments of the present disclosure clear and concise, the present disclosure omits detailed descriptions of some known functions and known components. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure. Other structures can refer to the general design

[0076] The scales of the figures in this disclosure can be used as a reference for actual processes, but are not limited to such. For example, the width-to-length ratio of the channel, the thickness and spacing of the various film layers, and the width and spacing of the various signal lines can be adjusted according to actual needs. The number of pixels in the display substrate and the number of sub-pixels in each pixel are not limited to the numbers shown in the figures. The figures described in this disclosure are merely schematic structural diagrams, and one embodiment of this disclosure is not limited to the shapes or values ​​shown in the figures.

[0077] In this specification, ordinal numbers such as “first”, “second” and “third” are provided to avoid confusion among constituent elements, and are not intended to limit the number.

[0078] In this specification, for convenience, words and phrases indicating orientation or positional relationships, such as "middle," "upper," "lower," "front," "back," "vertical," "horizontal," "top," "bottom," "inside," and "outside," are used to illustrate the positional relationships of constituent elements with reference to the accompanying drawings. This is merely for the purpose of facilitating the description of this specification and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present disclosure. The positional relationships of constituent elements may be appropriately changed depending on the direction in which each constituent element is described. Therefore, the present disclosure is not limited to the words and phrases described in the specification and may be appropriately replaced according to the circumstances.

[0079] In this specification, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct connections, indirect connections through intermediaries, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this disclosure.

[0080] In this specification, a transistor refers to 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 a drain electrode (drain electrode terminal, drain region, or drain electrode) and a 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.

[0081] In this specification, the first electrode can be a drain electrode and the second electrode can be a source electrode, or vice versa. The functions of "source electrode" and "drain electrode" may be interchanged when using transistors with opposite polarity or when the direction of current changes during circuit operation. Therefore, in this specification, "source electrode" and "drain electrode" may be interchanged.

[0082] In this specification, "electrically connected" includes components connected together via an element having some electrical function. There are no particular limitations on the "element having some electrical function" as long as it enables the transfer of electrical signals between the connected components. Examples of "element having some electrical function" include not only electrodes and wiring, but also switching elements such as transistors, resistors, inductors, capacitors, and other components with various functions.

[0083] In this specification, "parallel" refers to a state where the angle formed by two straight lines is greater than -10° and less than 10°, and thus also includes a state where the angle is greater than -5° and less than 5°. Furthermore, "perpendicular" refers to a state where the angle formed by two straight lines is greater than 80° and less than 100°, and thus also includes a state where the angle is greater than 85° and less than 95°.

[0084] In this specification, the terms "film" and "layer" may be interchanged. For example, "conductive layer" may be replaced with "conductive film." Similarly, "insulating film" may be replaced with "insulating layer."

[0085] In this specification, the term "same-layer arrangement" refers to a structure formed by patterning two (or more) structures using the same patterning process. The materials of these structures can be the same or different. For example, the precursor materials for forming the multiple structures arranged in the same layer can be the same, and the materials of the final structures can be the same or different.

[0086] The triangles, rectangles, trapezoids, pentagons or hexagons in this specification are not in the strict sense, but may be approximate triangles, rectangles, trapezoids, pentagons or hexagons, etc. There may be some small deformations caused by tolerances, and there may be chamfers, arc edges and deformations.

[0087] The term "about" in the present disclosure refers to a numerical value that is not strictly defined and allows for process and measurement errors.

[0088] With the advancement of society and the improvement of people's living standards, people are paying more attention to the quality of monitors when using them, such as brighter colors, more detailed image quality, and better eye protection. Monitors are often used in various bright environments (such as offices or outdoor environments), but the ambient light contrast of monitors is not high, resulting in poor display quality and failing to meet the needs of monitor users.

[0089] Figure 1 This is a schematic diagram of the structure of the display panel provided in the embodiment of the present disclosure. Figure 1 As shown, an embodiment of the present disclosure provides a display panel, including a liquid crystal cell 100, and a first optical assembly 200 and a second optical assembly 300 disposed on opposite sides of the liquid crystal cell. At least one of the liquid crystal cell 300, the first optical assembly 100, and the second optical assembly 200 includes at least one anti-reflection layer; the anti-reflection layer is configured to reduce the reflectivity of the display panel.

[0090] In an exemplary embodiment, the ambient light contrast ratio of the display panel depends on the ambient light intensity, the brightness of the display panel, the reflectivity of the display panel, and the dark room contrast ratio.

[0091] In an exemplary embodiment, the brightness of the display panel may be in the range of 400 nits to 500 nits.

[0092] In an exemplary embodiment, the intensity of the ambient light may be in the range of 200 lux to 500 lux, and illustratively, the intensity of the ambient light may be 300 lux.

[0093] In an exemplary embodiment, the reflectivity of the display panel may be less than 6%.

[0094] In an exemplary embodiment, the display panel may be a liquid crystal display panel of any display mode, for example, a twisted nematic (TN) liquid crystal display panel, an in-plane switching (IPS) liquid crystal display panel, a Fringe Field Switching (FFS) liquid crystal display panel, a vertical alignment (VA) liquid crystal display panel, or an advanced superdimensional switch (ADS) liquid crystal display panel, but the present disclosure is not limited thereto.

[0095] In an exemplary embodiment, the placement of the anti-reflection layer depends on the user's requirements for the reflectivity of the display panel. For example, if the user's requirements for the reflectivity of the display panel are not high, the anti-reflection layer can be placed in one or both of the liquid crystal cell, the first optical assembly, and the second optical assembly. If the user's requirements for the reflectivity of the display panel are high (i.e., the user requires a lower reflectivity of the display panel), at least one anti-reflection layer can be placed in the liquid crystal cell, the first optical assembly, and the second optical assembly.

[0096] The present disclosure reduces the reflectivity of the display panel by providing at least one anti-reflection layer in at least one component among the liquid crystal box, the first optical component, and the second optical component, thereby improving the ambient light contrast of the display panel by reducing the reflectivity of the display panel, thereby improving the display effect of the display and meeting the needs of its users.

[0097] In an exemplary embodiment, Figure 2 The figure is a schematic diagram of the structure of a liquid crystal cell. The liquid crystal cell includes a first substrate 10 and a second substrate 20 positioned opposite the cell, and a liquid crystal layer 30 disposed between the first and second substrates 10 and 20. At least one antireflection layer in the liquid crystal cell is located in at least one of the first substrate, the second substrate, and the liquid crystal layer.

[0098] In an exemplary embodiment, the first substrate 10 may be an array substrate, and the second substrate 20 may be a color filter substrate.

[0099] In an exemplary embodiment, the liquid crystal cell may further include: a frame sealant disposed between the first substrate and the second substrate.

[0100] In an exemplary embodiment, the first substrate 10 includes a first substrate 11 and a device structure layer 12 and an electrode structure layer 13 sequentially stacked on the first substrate. The device structure layer 12 and the electrode structure layer 13 are located on a side of the first substrate 11 close to the liquid crystal layer 30 .

[0101] In an exemplary embodiment, a first substrate includes at least a data line, a scan line, a plurality of transistors, and a plurality of sub-pixels defined by intersections of the data line and the scan line. At least one sub-pixel includes a first electrode and a second electrode. At least one transistor is electrically connected to the data line, the scan line, and the first electrode of the at least one sub-pixel, respectively.

[0102] In an exemplary embodiment, the device structure layer may include at least transistors, data lines, and scan lines, wherein the data lines extend along a first direction, the scan lines extend along a second direction, the first direction and the second direction may intersect, and illustratively, the first direction and the second direction may be perpendicular.

[0103] In an exemplary embodiment, a thin film transistor may include: an active layer, a gate electrode, and a source / drain electrode. Exemplarily, the structure of the thin film transistor may be a top gate structure or a bottom gate structure, which is not limited in this disclosure.

[0104] In an exemplary embodiment, the display panel may be provided with a scan driver and a data driver.

[0105] In an exemplary embodiment, a plurality of scan lines are connected to a scan driver, a plurality of data lines are connected to a data driver, and at least a portion of the scan driver and the data driver may be formed on the first substrate.

[0106] In an exemplary embodiment, an external control device (such as a timing controller) may provide a grayscale value and a control signal suitable for the specifications of the data driver to the data driver. The data driver may use the received grayscale value and control signal to generate a data voltage to be provided to the data line. For example, the data driver may use a clock signal to sample the grayscale value and apply a data voltage corresponding to the grayscale value to the data line in units of pixel rows. The external control device may provide a clock signal, a scan start signal, etc. suitable for the specifications of the scan driver to the scan driver. The scan driver may use the clock signal, the scan start signal, etc. to generate a scan signal to be provided to the scan line. For example, the scan driver may sequentially provide a scan signal having an on-level pulse to the scan line. For example, the scan driver may be configured in the form of a shift register and may generate a scan signal by sequentially transmitting the scan start signal provided in the form of an on-level pulse to the next level circuit under the control of the clock signal.

[0107] In an exemplary embodiment, the electrode structure layer may include at least a first electrode and a second electrode of at least one sub-pixel.

[0108] In an exemplary embodiment, the first electrode and the second electrode are transparent conductive electrodes.

[0109] In exemplary embodiments, the first substrate may be a rigid substrate or a flexible substrate. The rigid substrate may be, but is not limited to, one or more of glass and metal foil. The flexible substrate may be, but is not limited to, one or more of polyethylene terephthalate, polyethylene terephthalate, polyetheretherketone, polystyrene, polycarbonate, polyarylate, polyarylate, polyimide, polyvinyl chloride, polyethylene, and textile fibers. For example, the first substrate may be a glass substrate.

[0110] In an exemplary embodiment, Figure 2 As shown, the second substrate 20 includes: a second substrate 21, a black matrix layer 22 and a filter layer 23 arranged on the side of the second substrate 21 close to the liquid crystal layer 30, and a cover layer 24 arranged on the side of the black matrix layer 22 and the filter layer 23 away from the second substrate 21.

[0111] In an exemplary embodiment, the black matrix layer 22 and the filter layer 23 may be provided in the same layer. The black matrix layer 22 is provided with via holes, and the filter layer is filled in the via holes of the black matrix layer 23 .

[0112] In an exemplary embodiment, the filter layer includes: at least one filter, wherein the thickness of the at least one filter is greater than the thickness of the black matrix layer.

[0113] In an exemplary embodiment, the color filters may include a red color filter, a green color filter, and a blue color filter.

[0114] In an exemplary embodiment, the second substrate 21 may be a rigid substrate or a flexible substrate. The rigid substrate may be, but is not limited to, one or more of glass and metal foil. The flexible substrate may be, but is not limited to, one or more of polyethylene terephthalate, polyethylene terephthalate, polyetheretherketone, polystyrene, polycarbonate, polyarylate, polyarylate, polyimide, polyvinyl chloride, polyethylene, and textile fibers. For example, the second substrate 21 may be a glass substrate.

[0115] In an exemplary embodiment, at least one anti-reflection layer located in a liquid crystal cell may include a black matrix layer having a reflectivity of less than 5%. A black matrix layer with a reflectivity of less than 5% can reduce the reflectivity of the display panel by 0.2%. The present disclosure can reduce the reflectivity of the display panel by using a black matrix layer with a lower reflectivity.

[0116] In an exemplary embodiment, the thickness H1 of the black matrix layer 22 is in a range of 1.15 micrometers to 1.5 micrometers. For example, the thickness of the black matrix layer may be 1.5 micrometers.

[0117] In an exemplary embodiment, the length L of the black matrix layer between two adjacent color filters along the first direction is greater than 3 microns. For example, the length L of the black matrix layer between two adjacent color filters along the first direction may be in the range of 4 to 7 microns.

[0118] In an exemplary embodiment, the length of the black matrix layer between two adjacent color filters along the second direction is greater than 10 microns. Exemplarily, the length of the black matrix layer between two adjacent color filters along the second direction may be in the range of 10 microns to 20 microns.

[0119] In exemplary embodiments, the reflectivity of the black matrix layer may be in the range of 4.85% to 4.95%, and illustratively, the reflectivity of the black matrix layer may be 4.9%.

[0120] The black matrix layer provided in the present disclosure has a low reflectivity, which can reduce the reflectivity of the display panel by 0.2%.

[0121] In an exemplary embodiment, at least one antireflection layer located in the liquid crystal cell may include a filter layer. At least one filter is doped with a dispersant. In the present disclosure, by doping the filter with a dispersant, the pigment in the filter can be micronized, thereby improving the filter's dispersion performance, thereby reducing L0 scattering and enhancing the ambient light contrast of the display panel.

[0122] In an exemplary embodiment, Figure 2As shown, the orthographic projection of at least one optical filter 23 on the second substrate at least partially overlaps with the orthographic projection of the black matrix layer 22 on the second substrate. The at least one optical filter 23 includes: a first optical filter portion 231 and a second optical filter portion 231. The orthographic projection of the first optical filter portion 231 on the second substrate 21 is located within the range of the orthographic projection of the black matrix layer 22 on the base, and the orthographic projection of the second optical filter portion 232 on the second substrate 21 does not overlap with the orthographic projection of the black matrix layer on the second substrate 21.

[0123] In an exemplary embodiment, Figure 2 As shown, the distance between the surface of the cover layer 24 on the second filter portion 232 away from the second substrate 21 and the second substrate 21 is a first distance L1, the distance between the surface of the cover layer 24 on the first filter portion 231 away from the second substrate 21 and the second substrate 21 is a second distance L2, the distance between the surface of the second filter portion 232 away from the second substrate 21 and the second substrate 21 is a third distance L3, and the distance between the surface of the first filter portion 231 away from the second substrate 21 and the second substrate 21 is a fourth distance L4. The difference W1 between the second distance L2 and the first distance L1 is less than half the difference W2 between the fourth distance L4 and the third distance L3. By setting the difference W1 between the second distance L2 and the first distance L1 to be less than half the difference W2 between the fourth distance L4 and the third distance L3, the present disclosure can reduce the step difference of the cover layer 24, reduce the disorder of the liquid crystal layer at the step difference of the cover layer 24, reduce L0 scattering of the liquid crystal layer, and improve the ambient light contrast of the display panel.

[0124] In an exemplary embodiment, the average thickness H2 of the cover layer 24 may be greater than 1.3 microns. For example, the average thickness of the cover layer may be in the range of 1.5 microns to 2 microns. A thicker thickness H2 of the cover layer 24 may prevent the cover layer from being discontinuous.

[0125] In an exemplary embodiment, when the resolution of the display panel is greater than a threshold resolution, the contrast ratio of the liquid crystal layer may be greater than 1500.

[0126] In an exemplary embodiment, when the resolution of the display panel is less than a threshold resolution, the contrast ratio of the liquid crystal layer may be greater than 2000.

[0127] In an exemplary embodiment, according to the scattering formula of the liquid crystal layer, Among them, L0 brightness is correlated with the thickness d of the liquid crystal box, the liquid crystal birefringence Δn, and the liquid crystal elastic constant K. Among them, the smaller the thickness d of the liquid crystal box, the lower the L0 brightness, but reducing the thickness d of the liquid crystal box will cause the transmittance of the display panel to decrease, so the thickness d of the liquid crystal box is adjusted within a certain range to improve the contrast. The smaller the liquid crystal birefringence Δn, the lower the L0 brightness, but reducing the liquid crystal birefringence Δn will cause insufficient effective birefringence of the liquid crystal and a decrease in L255 brightness. Therefore, the present disclosure can reduce the liquid crystal birefringence Δn within a certain range to improve the contrast. The larger the liquid crystal elastic constant K, the lower the L0 brightness. The liquid crystal elastic constant K is usually increased by increasing the nematic-isotropic transition temperature. However, increasing the liquid crystal elastic constant K will slow down the response time of the liquid crystal and increase the threshold voltage of the liquid crystal, thereby increasing the driving voltage of the liquid crystal. Therefore, the present disclosure prepares the liquid crystal layer by coordinating the relationship between the thickness d of the liquid crystal box, the liquid crystal birefringence Δn, and the liquid crystal elastic constant K.

[0128] In an exemplary embodiment, Figure 3 Figure 1 is a structural diagram of a display panel. Figure 3 As shown, the first optical assembly includes a first polarizer 210, and the second optical assembly includes a second polarizer 310. The first polarizer 210 is located on the side of the first substrate 10 away from the liquid crystal layer 30, and the second polarizer 310 is located on the side of the second substrate 20 away from the liquid crystal layer 30. At least one film layer in the first polarizer and the second polarizer layer includes an adhesive layer, at least one polarizing film layer, and a protective layer. The adhesive layer is located on the side of the at least one polarizing film layer close to the liquid crystal layer, and the protective layer is located on the side of the at least one polarizing film layer away from the liquid crystal layer.

[0129] The adhesive layer of the first polarizer 210 is located on the side of the at least one polarizing film layer close to the liquid crystal layer 30, and the protective layer of the first polarizer 210 is located on the side of the at least one polarizing film layer away from the liquid crystal layer 30. The adhesive layer of the second polarizer 310 is located on the side of the at least one polarizing film layer close to the liquid crystal layer 30, and the protective layer of the first polarizer 210 is located on the side of the at least one polarizing film layer away from the liquid crystal layer 30.

[0130] In an exemplary embodiment, the polarizing film layer, also called a PVA (Polyvinyl Alcohol) layer, mainly plays a role of polarization.

[0131] In an exemplary embodiment, the protective layer mainly plays a supporting and protective role for the polarizing film layer, and is used to improve the overall mechanical properties of the polarizer.

[0132] In an exemplary embodiment, the at least one anti-reflection film layer located in the first light-emitting component includes a first polarizer, wherein the reflectivity of the protective layer of the first polarizer is less than 5%. The first polarizer with a protective layer reflectivity less than 5% is a low-reflection polarizer, which can reduce the reflectivity of the display panel.

[0133] In an exemplary embodiment, the at least one anti-reflection film layer located in the second light-emitting assembly includes a second polarizer, wherein the reflectivity of the protective layer of the second polarizer is less than 5%. The second polarizer with a protective layer reflectivity less than 5% is a low-reflection polarizer, which can reduce the reflectivity of the display panel.

[0134] In an exemplary embodiment, when the protective layer of the first polarizer is a hard coating, the at least one anti-reflection film layer located in the first light-emitting assembly includes a first polarizer, wherein the reflectivity of the protective layer of the first polarizer is less than 0.5%. The first polarizer being a low-reflection polarizer can reduce the reflectivity of the display panel by 4%.

[0135] In an exemplary embodiment, when the protective layer of the second polarizer is a hard coating, the at least one anti-reflection film layer located in the second light-emitting assembly includes a second polarizer, wherein the reflectivity of the protective layer of the second polarizer is less than 0.5%. The second polarizer being a low-reflection polarizer can reduce the reflectivity of the display panel by 4%.

[0136] In an exemplary embodiment, when the protective layer of the first polarizer is anti-glare treated, the at least one anti-reflection film layer located in the first light-emitting component includes: a first polarizer, and the reflectivity of the protective layer of the first polarizer is in the range of 1.7% to 3.2%.

[0137] In an exemplary embodiment, when the protective layer of the second polarizer is anti-glare treated, the at least one anti-reflection film layer located in the second light-emitting component includes: a second polarizer, and the reflectivity of the protective layer of the second polarizer is in the range of 1.7% to 3.2%.

[0138] In an exemplary embodiment, Figure 4 FIG. 1 is another structural diagram of a display panel. Figure 4 As shown, the first optical component further includes a moth-eye film 220 , which is located on a side of the first polarizer 210 away from the first substrate 10 ; and the at least one anti-reflection film located in the first optical component may include a moth-eye film.

[0139] Moth eye film is mainly made based on the characteristics of moth eyes using the principles of bionics. The eyes of moths flying at night basically do not reflect near-infrared waves, allowing moths to avoid attracting the attention of natural enemies such as birds and frogs, making them camouflaged and concealed at night. After studying the eyes of moths, it was found that the eyes of moths have a layer of three-dimensional hexagonal honeycomb nanostructure. The characteristic size of the moth eye is smaller than the wavelength of most light. Most of the incident light is absorbed by the honeycomb nanostructure, and the refractive index changes continuously from top to bottom, so that no reflection or less reflection occurs. It can be understood that the physical color of an object is usually caused by the object's reflection of light of different wavelengths. When all or most of the light is absorbed, the object appears black. By arranging a moth-eye film between the first protective layer and the polarizing film layer, the moth-eye film has the effect of reducing the reflection of the light incident from the first protective layer, so that the polarizer has the effect of reducing reflection. In this way, when applied to personal handheld devices and the personal handheld device is in the screen-off state, the visual color difference of the black silk screen can be eliminated or reduced, thereby improving the technical effect of the integrated black and forming a better aesthetic effect of the screen-off state.

[0140] In an exemplary embodiment, the moth-eye film reduces reflection of incident light by increasing its transmittance. The moth-eye film can reduce the reflectivity of the display panel and improve the ambient contrast of the display panel.

[0141] In an exemplary embodiment, the moth-eye film can increase the brightness of the display panel by 4% and improve the ambient light contrast ratio of the display panel by 4%.

[0142] Figure 5 Schematic diagram of the structure of the moth eye membrane. Figure 5 As shown, the moth-eye film 220 may include a transparent substrate 221 and a protective film 222 disposed on a side of the transparent substrate 221 away from the first substrate 10 . The surface of the protective film 222 away from the transparent substrate 221 includes a plurality of protrusions 223 disposed at intervals.

[0143] In an exemplary embodiment, the thickness of the transparent substrate 221 is in the range of 70 micrometers to 90 micrometers. For example, the thickness of the transparent substrate 221 may be 80 micrometers.

[0144] In an exemplary embodiment, the maximum distance between protrusions 223 is less than the wavelength of visible light. For another example, the maximum distance between at least two protrusions 223 is less than or equal to 300 nanometers. To further enhance the moth-eye film's reflectivity reduction effect in a polarizer, the spacing W between adjacent protrusions 223 is within a range of 80 to 120 nanometers. For example, the spacing W between adjacent protrusions 223 can be 100 nanometers.

[0145] In an exemplary embodiment, the height H of the at least one protrusion 223 is in a range of 150 nm to 250 nm. For example, the height H of the at least one protrusion 223 is 200 nm.

[0146] In an exemplary embodiment, at least one protrusion 223 gradually widens as it approaches the transparent substrate 221. The maximum distance between the multiple protrusions 223 is the distance between two adjacent protrusions 223. The gradual widening of the protrusions 223 as it approaches the transparent substrate 221 can enhance the anti-reflection effect of the moth-eye film.

[0147] In an exemplary embodiment, the at least one anti-reflection film layer in the second optical component includes: a second polarizer. The adhesive layer of the second polarizer is filled with a conductive agent, and the impedance of the adhesive layer of the second polarizer is less than 10 11 .

[0148] In an exemplary embodiment, Figure 6 FIG. 1 is another structural diagram of a display panel. Figure 6 As shown, the second optical component 300 may further include: at least one of a first optical film layer 320 and a second optical film layer 330. The at least one anti-reflection film layer in the second optical component includes: at least one of the first optical film layer 320 and the second optical film layer 330. Figure 6 The description is made by taking the example that the second optical component further includes: a first optical film layer 320 and a second optical film layer 330 .

[0149] In an exemplary embodiment, Figure 6 As shown, the first optical film layer 320 and the second optical film layer 330 are located between the second polarizer 310 and the second substrate 20 , and the first optical film layer 320 is located on the side of the second optical film layer 330 close to the second polarizer 310 , or on the side away from the second polarizer 310 . Figure 6 Therefore, the first optical film layer 320 is located on a side of the second optical film layer 330 close to the second polarizer 310 .

[0150] In an exemplary embodiment, the impedance of the first optical film layer 320 is less than 10 10 The first optical film layer is a high-resistance film layer.

[0151] In an exemplary embodiment, the refractive index of the first optical film layer 320 is greater than the refractive index of any one of the second polarizer 310 and the second substrate 21 .

[0152] In exemplary embodiments, the refractive index of the second polarizer 310 may be 1.52.

[0153] In example embodiments, the refractive index of the second substrate 21 may be 1.5.

[0154] In an exemplary embodiment, the refractive index of the first optical film layer 320 is in a range of 2 to 2.5. For example, the refractive index of the first optical film layer may be 2.1.

[0155] In an exemplary embodiment, the thickness of the first optical film layer 320 is in a range of 150 angstroms to 200 angstroms. For example, the thickness of the first optical film layer 320 may be 200 angstroms.

[0156] In an exemplary embodiment, the first optical film layer may be made of one of silicon nitride, silicon nitride, and poly (3,4-ethylenedioxythiophene). The first optical film layer may have a single-layer structure or a double-layer structure. In an exemplary embodiment, when the first optical film layer is made of poly (3,4-ethylenedioxythiophene), the sheet resistance of the first optical film layer is in a range of 2E8 ohms to 4E8 ohms.

[0157] In an exemplary embodiment, Figure 7 Schematic diagram of the structure of the second optical film layer Figure 1 .like Figure 7 As shown, the second optical film layer 330 includes: a first inorganic film layer 331 and a second inorganic film layer 332 stacked in sequence along the direction of the second polarizer 310 close to the second substrate 20 .

[0158] In example embodiments, the thickness of the first inorganic film layer 331 may be greater than the thickness of the second inorganic film layer 332 .

[0159] In example embodiments, the refractive index of the second inorganic film layer 332 may be greater than the refractive index of the first inorganic film layer 331 .

[0160] In an exemplary embodiment, the thickness of the first inorganic film layer 331 is in the range of 600 angstroms to 800 angstroms, and the refractive index is in the range of 1.4 to 1.5. For example, the thickness of the first inorganic film layer 331 may be 700 angstroms, and the refractive index of the first inorganic film layer 331 may be 1.45.

[0161] In an exemplary embodiment, the second inorganic film layer 332 has a thickness in the range of 50 angstroms to 70 angstroms and a refractive index in the range of 2.2 to 2.4. For example, the second inorganic film layer 332 may have a thickness of 30 angstroms and a refractive index of 2.3.

[0162] In an exemplary embodiment, the material of the first inorganic film layer 331 may include silicon dioxide.

[0163] In an exemplary embodiment, the second inorganic film layer 332 may be formed of a material including nickel pentoxide.

[0164] In an exemplary embodiment, Figure 8 Schematic diagram of the structure of the second optical film layer Figure 2 .like Figure 8 As shown, the second optical film layer includes: a first inorganic film layer 331 , a second inorganic film layer 332 , a third inorganic film layer 333 and a fourth inorganic film layer 334 stacked in sequence along the direction of the second polarizer 310 close to the second substrate 20 .

[0165] In an exemplary embodiment, the refractive index of at least one of the second inorganic film layer 332 and the fourth inorganic film layer 334 is greater than the refractive index of at least one structure in the second substrate and the second polarizer 310, and the refractive index of at least one of the first inorganic film layer 331 and the third inorganic film layer 333 is less than the refractive index of at least one structure in the second substrate and the second polarizer 310.

[0166] In an exemplary embodiment, the refractive index of at least one of the first inorganic film layer 331 and the third inorganic film layer 333 is in the range of 1.4 to 1.5. For example, the refractive index of at least one of the first inorganic film layer 331 and the third inorganic film layer 333 may be 1.45.

[0167] In an exemplary embodiment, the refractive index of at least one of the second inorganic film layer 332 and the fourth inorganic film layer 334 is in the range of 1.9 to 2.1. For example, the refractive index of at least one of the second inorganic film layer 332 and the fourth inorganic film layer 334 may be 2.0.

[0168] In an exemplary embodiment, the material of at least one of the first inorganic film layer 331 and the third inorganic film layer 333 includes silicon oxide.

[0169] In an exemplary embodiment, at least one of the second inorganic film layer 332 and the fourth inorganic film layer 334 is made of silicon nitride. For example, the second inorganic film layer 332 and the fourth inorganic film layer 334 may be made of silicon nitride.

[0170] In an exemplary embodiment, when the second optical component includes a first optical film layer and a second optical film layer, the refractive index of the first optical film layer is greater than the refractive index of at least one of the inorganic film layers in the second optical film layer. Exemplarily, when the second optical film layer includes: a first inorganic film layer and a second inorganic film layer, the refractive index of the first optical film layer is greater than the refractive index of at least one of the first and second inorganic film layers. When the second optical film layer includes: a first inorganic film layer, a second inorganic film layer, a third inorganic film layer, and a fourth inorganic film layer, the refractive index of the first optical film layer is greater than the refractive index of at least one of the first, second, third, and fourth inorganic film layers.

[0171] In an exemplary embodiment, the provision of the second optical assembly can reduce the reflectivity of the display panel by 0.2%.

[0172] In an exemplary embodiment, at least one compensation film is disposed between at least two polarizing film layers of one of the first and second polarizers. The optical axis of the compensation film is aligned with the transmission axis of the liquid crystal molecules in the liquid crystal layer. The compensation film arrangement in the present disclosure can reduce light leakage caused by the misalignment of the axes of the first and second polarizers when viewing the display panel from a side angle, thereby reducing contrast degradation at side viewing angles and improving the display quality of the display panel.

[0173] In an exemplary embodiment, when the liquid crystal molecules in the liquid crystal layer are positive liquid crystals, the compensation film includes an A-type compensation film and a C-type compensation film.

[0174] In an exemplary embodiment, the side viewing angle contrast attenuation is characterized by angular contrast. Specifically, the side viewing angle contrast attenuation = angular contrast CR1 / center contrast CR2. Here, the angular contrast is defined as follows: Taking the crossbar test method displayed in the display panel as an example, Figure 9 is a schematic diagram of two angles in angular contrast, such as Figure 9 As shown, the first angle θ is the angle (0-180°) between the first viewing angle and the plane L0 where the display panel is located. The first viewing angle is located outside the plane L0 where the display panel is located, and the plane where the first viewing angle is located is perpendicular to the plane L0 where the display panel is located. The second angle φ is the angle (0-360°) between the second viewing angle and the long axis O of the plane L0 where the display panel is located. The angular contrast CR1 refers to the ratio of the brightness when the display panel displays a pure white image to the brightness when the display panel displays a pure black image when the first angle is a numerical value and the second angle is a numerical value. The center contrast CR2 refers to the angular contrast when the first angle and the second angle are zero degrees. The angular contrast of the display panel is mainly affected by the backlight module, liquid crystal box, first polarizer and second polarizer included in the display device where the display panel is located.

[0175] Figure 10A The curve change of the side viewing angle contrast attenuation of the display panel Figure 1 , Figure 10B for Figure 10A The curve diagram of the angular contrast of the display panel provided is Figure 11A The curve change of the side viewing angle contrast attenuation of the display panel Figure 2 , Figure 11B for Figure 11A Provided is a curve diagram showing the angular contrast of a display panel. Figure 10A and Figure 10B Taking the liquid crystal molecules in the liquid crystal layer of the display panel as an example, Figure 10A and Figure 10B In the embodiment, display panel I is a display panel not provided with a compensation film, display panel II and display panel III are display panels provided with different compensation films, and Figure 10A and Figure 10B The second angle φ=45 degrees is used as an example for explanation. Figure 11A and Figure 11B The liquid crystal molecules in the liquid crystal layer of the display panel are taken as an example as positive liquid crystals. Figure 11A and Figure 11B In the embodiment, display panel I is a display panel not provided with a compensation film, display panel II and display panel III are display panels provided with different compensation films, and Figure 11A and Figure 11B The second angle φ = 45 degrees is used as an example for explanation. Figure 10A 、 Figure 10B 、 Figure 11A and Figure 11B As shown, in display panel I, the angular contrast CR1 / center contrast CR2 when the first angle is 45 degrees and the second angle is the full viewing angle (0-360°) is 5%. In display panel II or display panel III, the angular contrast CR1 / center contrast CR2 when the first angle is 45 degrees and the second angle is the full viewing angle can be increased to 15% to 20%.

[0176] Figure 10A 、 Figure 10B 、 Figure 11A and Figure 11B In the present invention, different compensation films are used because the detailed parameters of the liquid crystal molecules in the liquid crystal layer are different.

[0177] In an exemplary embodiment, a ratio of a target angular contrast ratio of the display panel to a center contrast ratio of the display panel may be greater than 20%. The target angular contrast ratio is a ratio of the brightness of the display panel when the display panel is fully white to the brightness of the display panel when the display panel is fully black, when the first angle is 45 degrees and the second angle is between 0 and 360 degrees.

[0178] The present disclosure can realize display panels with different reflectivities by setting a liquid crystal cell with low reflectivity, a first optical component with low reflectivity, and a second optical component with low reflectivity. Display panels with different reflectivities can achieve different ambient contrasts to meet the needs of different customers.

[0179] When the brightness of the display panel is 400 nits and the brightness of the ambient light is 300 lux, and the reflectivity of the display panel is in the range of 1.2% to 1.6%, the ambient light contrast ratio of the display panel is 250 to 350.

[0180] Figure 12 This is a schematic diagram of the structure of a display panel with a reflectivity ranging from 1.2% to 1.6%. The liquid crystal cell 100, first optical assembly 200, and second optical assembly 300 in the display panel with a reflectivity ranging from 1.2% to 1.6% each include at least one anti-reflection film layer. The at least one anti-reflection film layer in the liquid crystal cell includes a black matrix layer 22, a filter layer 23, a liquid crystal layer 30, and a cover layer 24. The black matrix layer 22 has a reflectivity of 4.9%. When the display panel resolution exceeds the target resolution, the contrast ratio of the liquid crystal layer 30 is greater than 1500. When the display panel resolution is less than the target resolution, the contrast ratio of the liquid crystal layer 30 is greater than 2000. At least one filter in the filter layer 23 is doped with a dispersant, and the thickness of the cover layer 24 is 2 microns. The at least one anti-reflection film layer in the first optical assembly includes a first polarizer 210 and a moth-eye film 220. The reflectivity of the protective layer of the first polarizer in the first optical assembly is less than 0.5%. The at least one anti-reflection film layer in the second optical component includes: a first optical film layer 320 , a second optical film layer 330 , and a second polarizer 310 . The reflectivity of the protective layer of the second polarizer 310 is less than 0.5%.

[0181] In an exemplary embodiment, a compensation film may be provided on the first polarizer of the first optical assembly or the second polarizer of the second optical assembly in a display panel having a reflectivity ranging from 1.2% to 1.6%.

[0182] When the brightness of the display panel is 400 nits and the brightness of the ambient light is 300 lux, and the reflectivity of the display panel is in the range of 1.7% to 3.2%, the ambient light contrast ratio of the display panel is 120-250.

[0183] In an exemplary embodiment, a liquid crystal cell in a display panel with a reflectivity ranging from 1.7% to 3.2% and a second optical assembly are provided with at least one anti-reflection coating layer. The first optical assembly may or may not be provided with an anti-reflection coating layer. The at least one anti-reflection coating layer in the liquid crystal cell includes a black matrix layer, a filter layer, a liquid crystal layer, and a cover layer. The black matrix layer has a reflectivity of 4.9%. When the display panel resolution exceeds the target resolution, the contrast ratio of the liquid crystal layer is greater than 1500, and when the display panel resolution is less than the target resolution, the contrast ratio of the liquid crystal layer is greater than 2000. At least one filter in the filter layer is doped with a dispersant, and the cover layer has a thickness of 2 microns. The at least one anti-reflection coating layer in the second optical assembly includes a first optical film layer and a second optical film layer. When the first optical assembly is provided with an anti-reflection coating layer, the reflectivity of the protective layer of the first polarizer in the first optical assembly is within a range of 1.6% to 3.2%. When the first optical component cannot be provided with an anti-reflection film layer, the reflectivity of the protective layer of the second polarizer in the second optical component is in the range of 1.6% to 3.2%.

[0184] In an exemplary embodiment, a compensation film may be provided on the first polarizer of the first optical assembly or the second polarizer of the second optical assembly in a display panel having a reflectivity ranging from 1.7% to 3.2%.

[0185] When the brightness of the display panel is 400 nits, the brightness of the ambient light is 300 lux, and the reflectivity of the display panel is in the range of 4% to 6%, the ambient light contrast ratio of the display panel is 80-120.

[0186] In an exemplary embodiment, the liquid crystal cell and the second optical assembly in a display panel with a reflectivity ranging from 4% to 6% are provided with at least one anti-reflection coating layer, while the first optical assembly is not provided with an anti-reflection coating layer. The at least one anti-reflection coating layer in the liquid crystal cell includes a black matrix layer, a filter layer, a liquid crystal layer, and a cover layer. The black matrix layer has a reflectivity of 4.9%, a contrast ratio of the liquid crystal layer is greater than 1500 when the display panel resolution exceeds the target resolution, and greater than 2000 when the display panel resolution is less than the target resolution. At least one filter in the filter layer is doped with a dispersant, and the cover layer has a thickness of 2 microns. The at least one anti-reflection coating layer in the second optical assembly includes a first optical film layer and a second optical film layer.

[0187] In an exemplary embodiment, the reflectivity of the first polarizer of the first optical assembly and the second polarizer of the second optical assembly in the display panel having a reflectivity ranging from 4% to 6% is 5.5% to 6.0%.

[0188] In an exemplary embodiment, a compensation film may be provided on the first polarizer of the first optical assembly or the second polarizer of the second optical assembly in a display panel having a reflectivity ranging from 4% to 6%.

[0189] When the brightness of the display panel is 400 nits, the brightness of the ambient light is 300 lux, and the reflectivity of the display panel is greater than 6%, the ambient light contrast ratio of the display panel is 80-120.

[0190] The first or second optical component of a display panel with a reflectivity greater than 6% is provided with an anti-reflection film layer, while the liquid crystal cell does not include an anti-reflection film layer. Specifically, when the first optical component includes an anti-reflection film layer, the anti-reflection film layer includes a first polarizer, and the reflectivity of the protective layer in the first polarizer is less than 0.5%, or the reflectivity of the protective layer in the first polarizer is within the range of 1.6% to 3.2%. When the second optical component includes an anti-reflection film layer, the anti-reflection film layer includes a second polarizer, and the reflectivity of the protective layer in the second polarizer is less than 0.5%, or the reflectivity of the protective layer in the second polarizer is within the range of 1.6% to 3.2%.

[0191] In an exemplary embodiment, the reflectivity of the black matrix layer in the liquid crystal cell of the display panel having a reflectivity greater than 6% is 6.5%.

[0192] In an exemplary embodiment, the first polarizer of the first optical assembly or the second polarizer of the second optical assembly in the display panel having a reflectivity greater than 6% is not provided with a compensation film.

[0193] The present disclosure also provides a display device including a display panel and a backlight module, wherein the backlight module is located on a side of the first optical component away from the liquid crystal cell and configured to emit light toward the display panel.

[0194] The display panel is the display panel provided by any of the aforementioned embodiments, and the implementation principle and effect are similar, which will not be repeated here.

[0195] In an exemplary embodiment, the backlight module may include a light guide plate and a light source, the light source being configured to emit light, and the light guide plate being configured to guide the light emitted by the light source to the display panel.

[0196] In an exemplary embodiment, the backlight module may further include a plastic frame and an optical film assembly. The optical film assembly, the light guide plate, and the reflective sheet may be stacked and arranged in the plastic frame. The light source is arranged on the plastic frame.

[0197] In an exemplary embodiment, a side of the light guide plate away from the display panel is provided with matrix-arranged dots, wherein the dots can destroy the total reflection of the incident light and guide the light to the side of the light guide plate close to the display panel, thereby providing backlight for the display panel.

[0198] In an exemplary embodiment, the light source may be disposed on a side of the light guide plate.

[0199] In an exemplary embodiment, the light source may be a sub-millimeter light-emitting diode (Mini Light-Emitting Diode, referred to as Mini LED)

[0200] In an exemplary embodiment, the shape of the light source may be circular, square, or other shapes, determined according to actual circumstances, and the present invention does not impose any limitation thereto. In an exemplary embodiment, the light guide plate may be a circular, square, or elliptical structure, or other components capable of guiding light, and the present invention does not impose any limitation thereto.

[0201] In an exemplary embodiment, the reflective sheet may be located on a side of the light guide plate away from the display panel, so as to improve the light extraction efficiency of the backlight module.

[0202] In an exemplary embodiment, the optical film set may be located on a side of the light guide plate close to the display panel and configured to diffuse the planar light emitted from the light guide plate and increase brightness.

[0203] In an exemplary embodiment, the optical film set may include: at least one brightness enhancement film, a diffusion film, and a prism sheet, wherein the at least one brightness enhancement film is stacked and located on a side of the diffusion film and the prism sheet away from the display panel.

[0204] In an exemplary embodiment, the refractive index of the brightness enhancement film may be greater than 1.5. A higher refractive index of the brightness enhancement film can improve the light utilization efficiency of the backlight module.

[0205] In an exemplary embodiment, the plurality of lattice points in the light guide plate can present a plurality of concave or convex ring structures, and the ring structures are nested and distributed on the concave surface. The light guide plate of the present disclosure can improve the light utilization efficiency of the backlight module.

[0206] In an exemplary embodiment, the display device may further include: an external circuit board.

[0207] In an exemplary embodiment, the backlight module further includes a flexible printed circuit board disposed on the plastic frame, the flexible printed circuit board being electrically connected to the external circuit board and the light source, and configured to control the light source.

[0208] In an exemplary embodiment, the liquid crystal display device can be any product or component with a display function, such as electronic paper, a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, etc., and the embodiments of the present invention do not impose any limitation thereto.

[0209] The drawings in this disclosure only relate to the structures involved in the embodiments of this disclosure, and other structures may refer to general designs.

[0210] For the sake of clarity, the thickness and size of layers or microstructures are exaggerated in the drawings used to describe the embodiments of the present disclosure. It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "under" another element, the element can be "directly on" or "under" the other element, or intervening elements may be present.

[0211] Although the embodiments disclosed in this disclosure are as described above, the contents described are merely embodiments adopted to facilitate understanding of the disclosure and are not intended to limit the disclosure. Any person skilled in the art to which the disclosure belongs may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope of the disclosure. However, the scope of patent protection of the disclosure shall still be based on the scope defined by the attached claims.

Claims

1. A display panel, characterized in that: include: A liquid crystal cell and a first optical component and a second optical component disposed on opposite sides of the liquid crystal cell; At least one of the liquid crystal cell, the first optical assembly, and the second optical assembly includes: at least one anti-reflective layer; The anti-reflection layer is configured to reduce ambient light reflectivity of the display panel.

2. The display panel according to claim 1, wherein: The liquid crystal cell comprises: a first substrate and a second substrate arranged opposite to the cell, and a liquid crystal layer arranged between the first substrate and the second substrate; At least one anti-reflection layer located in the liquid crystal cell is located in at least one structure among the first substrate, the second substrate, and the liquid crystal layer.

3. The display panel according to claim 2, wherein: The second substrate includes: a second underlay and a black matrix layer provided on a side of the second underlay close to the liquid crystal layer, and the at least one anti-reflection layer located in the liquid crystal cell includes: a black matrix layer; The reflectivity of the black matrix layer is less than 5%.

4. The display panel according to claim 3, wherein: The second substrate further comprises: a filter layer, the filter layer comprises: at least one filter, and the first substrate comprises: data lines and scan lines; The thickness of the black matrix layer is in the range of 1.15 microns to 1.5 microns, the length of the black matrix layer located between two adjacent filters along the first direction is greater than 3 microns, and the length of the black matrix layer located between two adjacent filters along the second direction is greater than 10 microns, wherein the first direction is the extension direction of the data line, and the second direction is the extension direction of the scan line.

5. The display panel according to claim 4, wherein: The reflectivity of the black matrix layer is in a range of 4.85% to 4.95%.

6. The display panel according to claim 2, wherein: The second substrate includes: a second substrate and a black matrix layer and a filter layer arranged on a side of the second substrate close to the liquid crystal layer, the filter layer includes: at least one filter; at least one anti-reflection layer located in the liquid crystal cell includes: a filter layer; The orthographic projection of at least one optical filter on the second substrate at least partially overlaps with the orthographic projection of the black matrix layer on the second substrate; The at least one optical filter is doped with a dispersant.

7. The display panel according to claim 2, wherein: The second substrate includes: a second underlay, a black matrix layer and a filter layer arranged on a side of the second substrate close to the liquid crystal layer, and a cover layer arranged on a side of the black matrix layer close to the liquid crystal layer; at least one anti-reflection layer located in the liquid crystal cell includes: a cover layer; At least one optical filter comprises: a first optical filter portion and a second optical filter portion, wherein an orthographic projection of the first optical filter portion on the second substrate is located within a range of an orthographic projection of the black matrix layer on the base, and an orthographic projection of the second optical filter portion on the second substrate does not overlap with an orthographic projection of the black matrix layer on the second substrate; a first distance between a surface of the covering layer on the second filter portion away from the second substrate and the second substrate; a second distance between a surface of the covering layer on the first filter portion away from the second substrate and the second substrate; a third distance between a surface of the second filter portion away from the second substrate and the second substrate; and a fourth distance between a surface of the first filter portion away from the second substrate and the second substrate. A difference between the second distance and the first distance is less than half of a difference between the fourth distance and the third distance.

8. The display panel according to claim 7, wherein: The average thickness of the covering layer is greater than 1.3 microns.

9. The display panel according to claim 2, wherein: When the resolution of the display panel is greater than the threshold resolution, the contrast ratio of the liquid crystal layer is greater than 1500; When the resolution of the display panel is less than a threshold resolution, the contrast ratio of the liquid crystal layer is greater than 2000.

10. The display panel according to claim 2, wherein: The first optical component includes: a first polarizer; the second optical component includes: a second polarizer, the first polarizer is located on a side of the first substrate away from the liquid crystal layer, and the second polarizer is located on a side of the second substrate away from the liquid crystal layer; At least one of the first polarizer and the second polarizing layer comprises: an adhesive layer, at least one polarizing film layer, and a protective layer, wherein the adhesive layer is located on a side of the at least one polarizing film layer close to the liquid crystal layer, and the protective layer is located on a side of the at least one polarizing film layer away from the liquid crystal layer; At least one anti-reflection film layer located in the first light-emitting component includes: a first polarizer, wherein the reflectivity of the protective layer of the first polarizer is less than 5%; The at least one anti-reflection film layer located in the second light-emitting component includes: a second polarizer, and the reflectivity of the protective layer of the second polarizer is less than 5%.

11. The display panel according to claim 10, wherein: The at least one anti-reflection film layer located in the first light-emitting component includes: a first polarizer, wherein the reflectivity of the protective layer of the first polarizer is less than 0.5%, or is in the range of 1.7% to 3.2%; The at least one anti-reflection film layer located in the second light-emitting component includes: a second polarizer, and the reflectivity of the protective layer of the second polarizer is less than 0.5%, or in the range of 1.7% to 3.2%.

12. The display panel according to claim 10, wherein: The first optical component further includes: a moth-eye film, the moth-eye film being located on a side of the first polarizer away from the first substrate; the at least one anti-reflection film located in the first optical component includes: a moth-eye film; The moth-eye film comprises: the transparent substrate and a protective film disposed on a side of the transparent substrate away from the first substrate, wherein a surface of the protective film away from the transparent substrate comprises: a plurality of protrusions arranged at intervals, at least one protrusion gradually widening in a direction approaching the transparent substrate; The thickness of the transparent substrate is in the range of 70 micrometers to 90 micrometers, the interval between adjacent protrusions is in the range of 80 nanometers to 120 nanometers, and the height of at least one protrusion is in the range of 150 nanometers to 250 nanometers.

13. The display panel according to claim 10, wherein: The at least one anti-reflection film layer located in the second optical component includes: a second polarizer; The adhesive layer of the second polarizer is filled with a conductive agent, and the impedance of the adhesive layer of the second polarizer is less than 10 11 .

14. The display panel according to claim 10, wherein: The second optical component further includes: at least one film layer of the first optical film layer and the second optical film layer; the at least one anti-reflection film layer located in the second optical component includes: at least one film layer of the first optical film layer and the second optical film layer; The first optical film layer and the second optical film layer are located between the second polarizer and the second substrate. The first optical film layer is located on a side of the second optical film layer close to the second polarizer, or on a side away from the second polarizer.

15. The display panel according to claim 14, wherein: The impedance of the first optical film layer is less than 10 10 ; The refractive index of the first optical film layer is greater than the refractive index of any structure of the second polarizer and the second substrate.

16. The display panel according to claim 15, wherein: The refractive index of the first optical film layer is in the range of 2 to 2.5; The thickness of the first optical film layer is in a range of 150 angstroms to 200 angstroms.

17. The display panel according to claim 13, wherein: The second optical film layer includes: a first inorganic film layer and a second inorganic film layer stacked in sequence along a direction of the second polarizer close to the second substrate; The thickness of the first inorganic film layer is greater than that of the second inorganic film layer, and the refractive index of the second inorganic film layer is greater than that of the first inorganic film layer.

18. The display panel according to claim 17, wherein: The first inorganic film layer is made of silicon dioxide, and the second inorganic film layer is made of nickel pentoxide. The thickness of the first inorganic film layer is in the range of 600 angstroms to 800 angstroms, and the refractive index is in the range of 1.4 to 1.5; The second inorganic film layer has a thickness in a range of 50 angstroms to 70 angstroms, and a refractive index in a range of 2.2 to 2.

4.

19. The display panel according to claim 13, wherein: The second optical film layer includes: a first inorganic film layer, a second inorganic film layer, a third inorganic film layer and a fourth inorganic film layer stacked in sequence along the direction of the second polarizer close to the second substrate; The refractive index of at least one of the second inorganic film layer and the fourth inorganic film layer is greater than the refractive index of at least one structure in the second substrate and the second polarizer, and the refractive index of at least one of the first inorganic film layer and the third inorganic film layer is less than the refractive index of at least one structure in the second substrate and the second polarizer.

20. The display panel according to claim 19, wherein The material of at least one of the first inorganic film layer and the third inorganic film layer comprises silicon oxide, and the material of at least one of the second inorganic film layer and the fourth inorganic film layer comprises silicon nitride; The refractive index of at least one of the first inorganic film layer and the third inorganic film layer is in the range of 1.4 to 1.5; A refractive index of at least one of the second inorganic film layer and the fourth inorganic film layer is in a range of 1.9 to 2.

1.

21. The display panel according to claim 17 or 19, characterized in that: The refractive index of the first optical film layer is greater than the refractive index of at least one inorganic film layer in the second optical film layer.

22. The display panel according to claim 2, wherein: The first optical component includes: a first polarizer, and the second optical component includes: a second polarizer, wherein the first polarizer is located on a side of the first substrate away from the liquid crystal layer, and the second polarizer is located on a side of the second substrate away from the liquid crystal layer; At least one of the first polarizer and the second polarizer comprises: a plurality of polarizing film layers; at least one compensation film is provided between at least two polarizing film layers of one of the first polarizer and the second polarizer; The optical axis of the compensation film is the same as the transmission axis of the liquid crystal molecules in the liquid crystal layer.

23. The display panel according to claim 22, wherein: When the liquid crystal molecules in the liquid crystal layer are positive liquid crystals, the compensation films include type A compensation films and type C compensation films; When the liquid crystal molecules in the liquid crystal layer are negative liquid crystals, the compensation film is a biaxial compensation film and includes two B-type compensation films, and the optical axes of the two B-type compensation films are different.

24. The display panel according to claim 22 or 23, characterized in that: The ratio of the target angle contrast of the display panel to the center contrast of the display panel is greater than 20%, wherein the target angle contrast is the ratio of the brightness of the display panel when the display panel is fully white and the brightness of the display panel when the display panel is fully black when the first angle is 45 degrees and the second angle is 0 degrees to 360 degrees, and the center contrast is the ratio of the brightness of the display panel when the display panel is fully white and the brightness of the display panel when the display panel is fully black when the first angle is 0 degrees and the second angle is 0 degrees, wherein the first angle is the angle between the first viewing angle and the plane where the display panel is located, and the second angle is the angle between the second viewing angle and the long axis of the display panel, the first viewing angle is outside the plane where the display panel is located, and the plane where the first viewing angle is located is perpendicular to the plane where the display panel is located, and the second viewing angle is within the plane where the display is located.

25. A display device, characterized in that: A display panel and a backlight module comprising any one of claims 1 to 24; The backlight module is located on a side of the first optical component away from the liquid crystal layer.

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