Display device

Abstract

The utility model discloses a polaroid and a display device. The polaroid comprises a waterproof light-transmitting organic layer and metal nanowires dispersed in the waterproof light-transmitting organic layer. The waterproof light-transmitting organic layer has high-humidity resistance, the metal nanowires have high-temperature resistance, and the metal nanowires are dispersed in the waterproof light-transmitting organic layer, so that the polaroid has polarization, high-humidity resistance and high-temperature resistance.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a polarizer and a display device. Background Art

[0002] As an important component of display devices, polarizers are widely used in the display field. However, the commonly used iodine-based polarizers currently have problems such as poor stability in high humidity environments.

[0003] Therefore, how to improve the stability of polarizers in high humidity environments is a technical problem that needs to be solved. Utility Model Content

[0004] The present application provides a polarizer and a display device to improve the stability of the polarizer of the display device in a high humidity environment.

[0005] In a first aspect, the present application provides a polarizer, wherein the polarizer comprises a waterproof and light-transmitting organic layer and metal nanowires dispersed in the waterproof and light-transmitting organic layer.

[0006] In some embodiments, the aspect ratio of the metal nanowire is greater than or equal to 100 and less than or equal to 10000, and the aspect ratio of the metal nanowire is equal to the ratio of the length of the metal nanowire to the diameter of the metal nanowire.

[0007] In some embodiments, the diameter of the metal nanowire is greater than or equal to 10 nanometers and less than or equal to 1000 nanometers.

[0008] In some embodiments, the length of the metal nanowire is greater than or equal to 100 nanometers and less than or equal to 10 micrometers.

[0009] In some embodiments, the mass percentage of the metal nanowires in the waterproof and light-transmitting organic layer is greater than or equal to 0.5% and less than or equal to 50%.

[0010] In some embodiments, the waterproof and light-transmissive organic layer includes at least one of a polyester organic layer, a polycarbonate layer, and a polymethacrylate layer.

[0011] In some embodiments, the waterproof and light-transmissive organic layer has a thickness greater than or equal to 1 micrometer and less than or equal to 100 micrometers.

[0012] In a second aspect, the present application provides a display device, which includes at least one polarizer according to any of the above embodiments.

[0013] In some embodiments, the display device further comprises a display panel and an adhesive layer. At least one of the polarizers is disposed on the light-emitting side of the display panel and / or the back side of the light-emitting side. The adhesive layer is disposed between the display panel and one of the polarizers, and the adhesive layer is in direct contact with the waterproof and light-transmitting organic layer.

[0014] In some embodiments, at least one of the polarizers comprises:

[0015] a first polarizer, disposed on the light-emitting side of the display panel, and comprising a first waterproof and light-transmitting organic layer and first metal nanowires dispersed in the first waterproof and light-transmitting organic layer; and

[0016] A second polarizer is arranged on the back side of the light emitting side of the display panel, and includes a second waterproof and light-transmitting organic layer and second metal nanowires dispersed in the second waterproof and light-transmitting organic layer, wherein the extension direction of the second metal nanowires intersects with the extension direction of the first metal nanowires, and the mass percentage of the second metal nanowires in the second waterproof and light-transmitting organic layer is less than the mass percentage of the first metal nanowires in the first waterproof and light-transmitting organic layer.

[0017] In some embodiments, the ratio of the mass percentage of the second metal nanowires in the second waterproof and light-transmitting organic layer to the mass percentage of the first metal nanowires in the first waterproof and light-transmitting organic layer is greater than or equal to 0.9 and less than or equal to 0.98.

[0018] In the polarizer and display device in some embodiments of the present application, the polarizer includes a waterproof and light-transmitting organic layer and metal nanowires dispersed in the waterproof and light-transmitting organic layer. In this way, the waterproof and light-transmitting organic layer has high humidity resistance, the metal nanowires have high temperature resistance, and the metal nanowires are dispersed in the waterproof and light-transmitting organic layer, so that the polarizer has polarization, high humidity resistance and high temperature resistance, thereby extending the service life of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic cross-sectional structure diagram of a display device according to some embodiments of the present application;

[0020] Figure 2 A schematic diagram of the structure of the first polarizer of some embodiments provided in this application;

[0021] Figure 3 This is a schematic structural diagram of the second polarizer of some embodiments provided in the present application.

[0022] Reference numerals:

[0023] 100, display device; 10, display panel;

[0024] 11, polarizer; 111, first polarizer; 112, second polarizer;

[0025] 12, waterproof and light-transmitting organic layer; 121, first waterproof and light-transmitting organic layer; 122, second waterproof and light-transmitting organic layer;

[0026] 13, metal nanowire; 131, first metal nanowire; 132, second metal nanowire;

[0027] 14, adhesive layer;

[0028] 20, backlight module;

[0029] x, first direction; y, second direction. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0031] Please refer to Figures 1 to 3 As shown, Figure 1 Schematic diagram of the cross-sectional structure of display devices of some embodiments provided in this application, Figure 2 This is a schematic diagram of the structure of the first polarizer of some embodiments provided in this application, Figure 3 The display device 100 is a schematic diagram of the structure of the second polarizer of some embodiments provided in the present application. The display device 100 can be used in terminal devices such as display screens, notebooks, and computers.

[0032] like Figures 1 to 3 As shown, the display device 100 includes a display panel 10 and at least one polarizer 11. At least one polarizer 11 is disposed on the light-emitting side and / or the back side of the light-emitting side of the display panel 10. The display panel 10 may be a liquid crystal display panel, but is not limited thereto, and may also be an organic light-emitting diode display panel, etc. One polarizer 11 includes a waterproof and light-transmitting organic layer 12 and metal nanowires 13 dispersed in the waterproof and light-transmitting organic layer 12.

[0033] In some embodiments of the present application, the waterproof and light-transmitting organic layer 12 is resistant to high humidity, the metal nanowires 13 are resistant to high temperatures, and the metal nanowires 13 are dispersed in the waterproof and light-transmitting organic layer 12, so that the polarizer 11 has polarization, high humidity resistance and high temperature resistance, thereby improving the performance stability of the polarizer 11 and extending the service life of the display device 100.

[0034] It should be noted that the metal nanowires 13 have polarization properties, which are caused by the interaction between photons and metal outer layer electrons to convert light energy into heat energy. Dispersing the metal nanowires 13 in the waterproof and light-transmitting organic layer 12 can make the waterproof and light-transmitting organic layer 12 have polarization properties.

[0035] In some embodiments, the aspect ratio of the metal nanowire 13 is greater than or equal to 100 and less than or equal to 10000. The aspect ratio of the metal nanowire 13 is equal to the ratio of the length of the metal nanowire 13 to the diameter of the metal nanowire 13. In this way, the aspect ratio of the metal nanowire 13 is moderate, taking into account the polarization degree and manufacturing process difficulty of the polarizer 11, thereby improving the contrast of the display device 100 and reducing the manufacturing difficulty of the display device 100. If the aspect ratio of the metal nanowire 13 is too low, it is not conducive to improving the polarization degree of the polarizer 11. If the aspect ratio of the metal nanowire 13 is too high, it is not conducive to reducing the manufacturing difficulty of the polarizer 11.

[0036] Optionally, the aspect ratio of the metal nanowire 13 is greater than or equal to 200 and less than or equal to 8000. Optionally, the aspect ratio of the metal nanowire 13 is greater than or equal to 500 and less than or equal to 5000. Optionally, the aspect ratio of the metal nanowire 13 is greater than or equal to 500 and less than or equal to 3000. Optionally, the aspect ratio of the metal nanowire 13 is greater than or equal to 800 and less than or equal to 1500. Optionally, the aspect ratio of the metal nanowire 13 is greater than or equal to 900 and less than or equal to 1200.

[0037] In some embodiments, the diameter of the metal nanowire 13 is greater than or equal to 100 nanometers and less than or equal to 1000 nanometers. In this way, the diameter of the metal nanowire 13 is moderate, taking into account both the polarization degree and the light transmittance of the polarizer 11. If the diameter of the metal nanowire 13 is too large, it is not conducive to improving the transmittance of light passing through the polarizer 11. If the diameter of the metal nanowire 13 is too small, it is not conducive to taking into account the polarization degree of the polarizer 11.

[0038] Optionally, the diameter of the metal nanowire 13 is greater than or equal to 150 nanometers and less than or equal to 800 nanometers. Optionally, the diameter of the metal nanowire 13 is greater than or equal to 200 nanometers and less than or equal to 500 nanometers. Optionally, the diameter of the metal nanowire 13 is greater than or equal to 250 nanometers and less than or equal to 450 nanometers.

[0039] In some embodiments, the length of the metal nanowire 13 is greater than or equal to 100 nanometers and less than or equal to 10 micrometers. In this way, the length of the metal nanowire 13 is moderate, taking into account the uniformity of the dispersion of the metal nanowire 13 in the waterproof and light-transmitting organic layer 12 and the polarization degree of the polarizer 11. If the length of the metal nanowire 13 is too long, it is not conducive to improving the uniformity of the dispersion of the metal nanowire 13 in the waterproof and light-transmitting organic layer 12. If the length of the metal nanowire 13 is too short, it is not conducive to improving the polarization degree of the polarizer 11.

[0040] Optionally, the length of the metal nanowire 13 is greater than or equal to 150 nanometers and less than or equal to 1 micrometer. Optionally, the length of the metal nanowire 13 is greater than or equal to 200 nanometers and less than or equal to 800 nanometers. Optionally, the length of the metal nanowire 13 is greater than or equal to 500 nanometers and less than or equal to 700 nanometers.

[0041] In some embodiments, the mass percentage of the metal nanowires 13 in the waterproof and light-transmitting organic layer 12 is greater than or equal to 0.5% and less than or equal to 50%. In this way, the mass percentage of the metal nanowires 13 in the waterproof and light-transmitting organic layer 12 is moderate, taking into account the polarization degree and the transmittance of light of the polarizer 11, thereby taking into account the display contrast and display brightness of the display device 100. If the mass percentage of the metal nanowires 13 is too low, it is difficult to improve the polarization degree of the polarizer 11. If the mass percentage of the metal nanowires 13 is too high, it is difficult to improve the transmittance of light of the polarizer 11. The mass percentage of the metal nanowires 13 is equal to the mass of the metal nanowires 13 divided by the sum of the mass of the metal nanowires 13 and the mass of the waterproof and light-transmitting organic layer 12.

[0042] Optionally, the mass percentage of the metal nanowires 13 in the waterproof and light-transmitting organic layer 12 is greater than or equal to 1% and less than or equal to 45%. Optionally, the mass percentage of the metal nanowires 13 in the waterproof and light-transmitting organic layer 12 is greater than or equal to 5% and less than or equal to 35%. Optionally, the mass percentage of the metal nanowires 13 in the waterproof and light-transmitting organic layer 12 is greater than or equal to 8% and less than or equal to 30%. Optionally, the mass percentage of the metal nanowires 13 in the waterproof and light-transmitting organic layer 12 is greater than or equal to 12% and less than or equal to 25%.

[0043] In some embodiments, the metal nanowire 13 may include at least one of a nanosilver wire, a nanocopper wire, and a nanoaluminum wire. For example, the metal nanowire 13 may include a nanosilver wire. In some embodiments, the metal nanowire 13 may include a composite nanometal wire, which may include a nanometal core wire and a metal coating covering the nanometal core wire, wherein the material of the nanometal core wire is different from the material of the metal coating, so that the composite nanometal wire has multiple functions.

[0044] In some embodiments, the waterproof and light-transmissive organic layer 12 may include at least one of a polyester organic layer, a polycarbonate layer, and a polymethacrylate layer.

[0045] In some embodiments, the waterproof and light-transmitting organic layer 12 may include a polyester organic layer. In this way, while ensuring that the waterproof and light-transmitting organic layer 12 has good high-humidity resistance, the difficulty of manufacturing the process of aligning the metal nanowires 13 dispersed in the polyester organic layer through a stretching process is simplified. In some embodiments, the polyester organic layer may include polyethylene terephthalate.

[0046] In some embodiments, the waterproof and light-transmitting organic layer 12 may include polycarbonate, so as to ensure that the waterproof and light-transmitting organic layer 12 has good high-humidity resistance and high-temperature resistance.

[0047] In some embodiments, the waterproof and light-transmitting organic layer 12 may include a polyester / polycarbonate layer, wherein the polyester / polycarbonate layer includes a mixture of polyester and polycarbonate. In this way, the waterproof and light-transmitting organic layer 12 is ensured to have good high-humidity resistance and high-temperature resistance, and the difficulty of manufacturing the waterproof and light-transmitting organic layer 12 is reduced.

[0048] In some embodiments, a waterproof, light-transmitting organic layer 12 may also include two or more different waterproof, light-transmitting organic sublayers. For example, a waterproof, light-transmitting organic layer 12 includes a first waterproof, light-transmitting organic sublayer (not shown) and a second waterproof, light-transmitting organic sublayer (not shown) stacked with the first waterproof, light-transmitting organic sublayer. The first waterproof, light-transmitting organic sublayer is arranged close to the display panel 10, and the second waterproof, light-transmitting organic sublayer is located on the side of the first waterproof, light-transmitting organic sublayer away from the display panel 10. The first waterproof, light-transmitting organic sublayer includes a polycarbonate layer, and the second waterproof, light-transmitting organic sublayer includes a polyester organic layer. In this way, the hardness and high-humidity resistance of the polarizer 11 are improved, the risk of damage to the polarizer 11 during installation on the display panel 10 is reduced, and the risk of warping of the polarizer 11 due to high temperature is reduced.

[0049] In some embodiments, the hardness of the waterproof and light-transmitting organic layer 12 is greater than or equal to 1.5 H and less than or equal to 3 H. In this way, the hardness of the waterproof and light-transmitting organic layer 12 is increased, and the risk of damage to the polarizer 11 during the installation process is reduced.

[0050] In some embodiments, the thickness of the waterproof and light-transmissive organic layer 12 is greater than or equal to 1 micrometer and less than or equal to 100 micrometers, so as to take into account both the polarization degree and the light transmittance of the polarizer 11 .

[0051] like Figure 1As shown, in some embodiments, at least one polarizer 11 includes a first polarizer 111 and a second polarizer 112. The first polarizer 111 is disposed on the light-exiting side of the display panel 10, and includes a first waterproof and light-transmitting organic layer 121 and a first metal nanowire 131 dispersed in the first waterproof and light-transmitting organic layer 121. The first metal nanowire 131 extends along a first direction y. The second polarizer 112 is disposed on the back side of the light-exiting side of the display panel 10, and the second polarizer 112 is located between the backlight module 20 and the display panel 10. The second polarizer 112 includes a second waterproof and light-transmitting organic layer 122 and a second metal nanowire 132 dispersed in the second waterproof and light-transmitting organic layer 122. The second metal nanowire 132 extends along a second direction x, and the first direction y is perpendicular to the second direction x, that is, the extension direction of the second metal nanowire 132 is perpendicular to the extension direction of the first metal nanowire 131. In this way, the transmission axis of the first polarizer 111 is perpendicular to the transmission axis of the second polarizer 112 , and the display panel 10 is used to control the brightness and contrast of the display device 100 .

[0052] In some embodiments, the mass percentage of the second metal nanowires 132 in the second waterproof and light-transmitting organic layer 122 is less than the mass percentage of the first metal nanowires 131 in the first waterproof and light-transmitting organic layer 121. In this way, the mass percentage of the second metal nanowires 132 in the second waterproof and light-transmitting organic layer 122 is smaller, which increases the transmittance of the second polarizer 112 to the backlight emitted by the backlight module 20, so that more backlight is incident on the display panel 10, thereby increasing the brightness of the display device 100 when displaying.

[0053] In some embodiments, the ratio of the mass percentage of the second metal nanowires 132 in the second waterproof light-transmitting organic layer 122 to the mass percentage of the first metal nanowires 131 in the first waterproof light-transmitting organic layer 121 is greater than or equal to 0.9 and less than or equal to 0.98. In this way, the transmittance of the second polarizer 112 to the backlight and the polarization degree of the second polarizer 112 are taken into account.

[0054] In some embodiments, the melting temperature of the second waterproof and light-transmitting organic layer 122 is greater than the melting temperature of the first waterproof and light-transmitting organic layer 121. In this way, the high temperature resistance of the second waterproof and light-transmitting organic layer 122 is improved, and the risk of the second polarizer 112 being deformed by heat due to the heat generated by the backlight module 20 when it is working is reduced.

[0055] In some embodiments, the display device 100 further includes an adhesive layer 14, which is disposed between the display panel 10 and a polarizer 11, and the adhesive layer 14 is in direct contact with the waterproof and light-transmitting organic layer 12. In this way, compared with the polarizer in the related art including a polyvinyl alcohol layer and a protective layer located on both sides of the polyvinyl alcohol layer, the use of the waterproof and light-transmitting organic layer 12 can omit the protective layer in the related art, simplify the structure and thickness of the polarizer 11, and further reduce the thickness of the display device 100. In a specific embodiment, an adhesive layer 14 is disposed between the display panel 10 and the first polarizer 111, and is in contact with the first waterproof and light-transmitting organic layer 121 and the display panel 10; another adhesive layer 14 is disposed between the display panel 10 and the second polarizer 112, and is in contact with the second waterproof and light-transmitting organic layer 122 and the display panel 10.

[0056] In some embodiments, for the above-mentioned polarizer 11, its manufacturing method may include the following steps: first, the waterproof resin is mixed with the initial metal nanowires 13 and then granulated to obtain mixed particles; then, the mixed particles are formed into an initial thin layer by casting or extrusion; finally, the initial thin layer is directional stretched to form a polarizer 11 including a plurality of metal nanowires 13 arranged in a directional manner.

[0057] In summary, the present application provides a display device, in which the waterproof and light-transmitting organic layer of the polarizer is resistant to high humidity, the metal nanowires are resistant to high temperatures, and the metal nanowires are dispersed in the waterproof and light-transmitting organic layer, so that the polarizer has polarization, high humidity resistance and high temperature resistance, which is beneficial to extending the service life of the display device.

[0058] The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technical personnel in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display device, characterized in that: include: Display panel; as well as At least one polarizer is disposed on the light-emitting side of the display panel and / or the back side of the light-emitting side, and at least one of the polarizers includes: A waterproof and light-transmitting organic layer; and Metal nanowires dispersed in the waterproof and light-transmitting organic layer; and The adhesive layer is disposed between the display panel and the polarizer, and the adhesive layer is in direct contact with the waterproof and light-transmitting organic layer.

2. The display device according to claim 1, characterized in that The aspect ratio of the metal nanowire is greater than or equal to 100 and less than or equal to 10000, and the aspect ratio of the metal nanowire is equal to the ratio of the length of the metal nanowire to the diameter of the metal nanowire.

3. The display device according to claim 2, characterized in that: The diameter of the metal nanowire is greater than or equal to 10 nanometers and less than or equal to 1000 nanometers.

4. The display device according to claim 2, characterized in that: The length of the metal nanowire is greater than or equal to 100 nanometers and less than or equal to 10 micrometers.

5. The display device according to claim 1, characterized in that The display panel is a liquid crystal display panel.

6. The display device according to any one of claims 1 to 5, characterized in that: The waterproof and light-transmitting organic layer includes at least one of a polyester organic layer, a polycarbonate layer and a polymethacrylate layer.

7. The display device according to any one of claims 1 to 5, characterized in that: The thickness of the waterproof and light-transmitting organic layer is greater than or equal to 1 micrometer and less than or equal to 100 micrometers.

8. The display device according to claim 1, characterized in that: The waterproof and light-transmitting organic layer includes a first waterproof and light-transmitting organic sublayer and a second waterproof and light-transmitting organic sublayer stacked together. The first waterproof and light-transmitting organic sublayer is arranged close to the display panel, and the second waterproof and light-transmitting organic sublayer is located on a side of the first waterproof and light-transmitting organic sublayer away from the display panel.

9. The display device according to claim 8, characterized in that: The first waterproof and light-transmitting organic sublayer includes a polycarbonate layer, and the second waterproof and light-transmitting organic sublayer includes a polyester organic layer.

10. The display device according to claim 1, characterized in that At least one of the polarizers comprises: a first polarizer, disposed on the light-emitting side of the display panel, and comprising a first waterproof and light-transmitting organic layer and first metal nanowires dispersed in the first waterproof and light-transmitting organic layer; and A second polarizer is arranged on the back side of the light-emitting side of the display panel, and includes a second waterproof and light-transmitting organic layer and second metal nanowires dispersed in the second waterproof and light-transmitting organic layer, wherein the extension direction of the second metal nanowires is perpendicular to the extension direction of the first metal nanowires, and the mass percentage of the second metal nanowires in the second waterproof and light-transmitting organic layer is less than the mass percentage of the first metal nanowires in the first waterproof and light-transmitting organic layer.

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