Display panel, manufacturing method thereof, and display device

Abstract

The present disclosure provides a display panel, a preparation method thereof, and a display device, belonging to the field of display technology. The display panel includes a first substrate and a second substrate, a liquid crystal layer and a first supporting column arranged between the first substrate and the second substrate; the first substrate includes a first base substrate, a display electrode arranged on the first base substrate, and a first insulating layer arranged on the side of the display electrode close to the liquid crystal layer; a directional sound structure is arranged on the first base substrate; the directional sound structure includes a first functional layer and a second functional layer, a second supporting column and a glue frame assembly located between the first functional layer and the second functional layer; the first functional layer includes a first electrode arranged on the first base substrate, and the first insulating layer covers the first electrode; the second functional layer includes a second insulating layer and a second electrode arranged in sequence along a direction away from the first base substrate; and the orthographic projections of the first electrode and the second electrode on the first base substrate are located within the orthographic projection of the glue frame assembly on the first base substrate.

Description

Technical Field

[0001] The present disclosure belongs to the field of display technology, and particularly relates to a display panel and a manufacturing method thereof, and a display device. Background Art

[0002] The output of audio signals in traditional display devices uses traditional diffuse speakers. However, the separate speaker system requires a large space on the display panel. Under the current trend of narrow-border and full-screen display panels, the separate speaker system can no longer meet the application needs in the display field.

[0003] Screen sound is currently the mainstream development trend, which means combining audio directional sound components with display panels to form an integrated audio and video display panel. Directional audio transmission technology modulates an audio signal with an ultrasonic carrier signal. The ultrasonic wave is emitted into the air by an audio directional transducer. The ultra-strong directional propagation of ultrasound in air and the nonlinear acoustic effect are used to demodulate the audio signal after propagation for a certain distance, forming an audible sound signal with strong directionality, thereby achieving the effect of directional propagation of the audio signal. However, most display panels integrated with audio directional sound components do not meet the design requirements of lightweight display panels. Summary of the Invention

[0004] The present disclosure aims to solve at least one of the technical problems existing in the prior art and provides a display panel and a manufacturing method thereof, and a display device.

[0005] In a first aspect, a technical solution adopted to solve the technical problem of the present disclosure is a display panel, comprising a first substrate and a second substrate arranged opposite to each other, and a liquid crystal layer and a first support column arranged between the first substrate and the second substrate; the first substrate comprises a first base substrate, a display electrode arranged on the first base substrate, and a first insulating layer arranged on a side of the display electrode close to the liquid crystal layer; wherein the display panel further comprises: a directional sound emission structure arranged on the first base substrate;

[0006] The directional sound emitting structure includes a first functional layer and a second functional layer arranged in sequence in a direction away from the first substrate, a second support column located between the first functional layer and the second functional layer, and a rubber frame assembly located between the first functional layer and the second functional layer and connecting the two;

[0007] The first functional layer includes a first electrode arranged on the first base substrate, and the first insulating layer covers the first electrode; the second functional layer includes a second insulating layer and a second electrode arranged in sequence along a direction away from the first base substrate; and the orthographic projections of the first electrode and the second electrode on the first base substrate are located within the orthographic projection of the frame assembly on the first base substrate.

[0008] In some embodiments, the first electrode and the display electrode are provided in the same layer.

[0009] In some embodiments, the first support column and the second support column are arranged on the same layer.

[0010] In some embodiments, the display panel includes a display area and a peripheral area surrounding the display area; the display panel further includes a sealing component located between the first substrate and the second substrate and sealing the liquid crystal layer; the sealing component is located in the peripheral area and surrounds the display area;

[0011] The liquid crystal layer and the display electrodes are both located in the display area.

[0012] In some embodiments, the sealing assembly and the rubber frame assembly are arranged on the same layer.

[0013] In some embodiments, the second electrode and the second insulating layer constitute a diaphragm of the directional sound emitting structure.

[0014] In some embodiments, the plastic frame assembly is provided with a plurality of bonding portions; air circulation channels are formed between the plurality of bonding portions.

[0015] In some embodiments, the plurality of bonding portions are divided into a plurality of bonding units; each bonding unit includes at least one bonding portion;

[0016] The bonding unit includes a first bonding unit and a second bonding unit that are oppositely arranged along the length direction of the first substrate, and a third bonding unit and a fourth bonding unit that are oppositely arranged along the width direction of the first substrate;

[0017] The first bonding portion of the first bonding unit and the second bonding portion of the second bonding unit are arranged opposite to each other; a first width of the air circulation channel between two adjacent first bonding portions is equal to a second width of the air circulation channel between two adjacent second bonding portions arranged opposite to the two adjacent first bonding portions;

[0018] The third bonding portion in the third bonding unit and the fourth bonding portion in the fourth bonding unit are arranged opposite to each other; the third width of the air circulation channel between two adjacent third bonding portions is equal to the fourth width of the air circulation channel between two adjacent second bonding portions arranged opposite to two adjacent fourth bonding portions.

[0019] In some embodiments, the width of the air circulation channel between two adjacent first bonding portions and the fourth bonding portions is a fifth width; the width of the air circulation channel between two adjacent first bonding portions and the second bonding portions is a sixth width; the fifth width and the sixth width are equal;

[0020] The width of the air circulation channel between two adjacent second bonding parts and the third bonding parts is the seventh width; the width of the air circulation channel between two adjacent second bonding parts and the fourth bonding parts is the eighth width; the seventh width and the eighth width are equal.

[0021] In some embodiments, the resistance of the first electrode and the second electrode is between 1Ω and 6Ω.

[0022] In some embodiments, the second substrate includes a second base substrate and a color filter layer disposed on a side of the second base substrate close to the liquid crystal layer.

[0023] In a second aspect, embodiments of the present disclosure further provide a method for manufacturing a display panel, which is used to manufacture the display panel according to any of the above embodiments. The method for manufacturing the display panel includes:

[0024] Providing a first base substrate, and forming a first electrode and a display electrode on the first base substrate;

[0025] forming a first insulating layer on a side of the first electrode and the display electrode facing away from the first base substrate;

[0026] forming a liquid crystal layer, a first supporting column, a plastic frame assembly, and a second supporting column on a side of the first insulating layer facing away from the first base substrate;

[0027] forming a second substrate on a side of the liquid crystal layer and the first supporting pillar facing away from the first insulating layer;

[0028] A second insulating layer and a second electrode are sequentially formed on a side of the rubber frame assembly and the second support group facing away from the first insulating layer.

[0029] In some embodiments, the display panel includes a display area and a peripheral area surrounding the display area;

[0030] After forming the liquid crystal layer, the first supporting column, the frame assembly and the second supporting column on the side of the first insulating layer facing away from the first base substrate, the method further includes:

[0031] A sealing component is formed on a side of the first insulating layer facing away from the first base substrate; the sealing component is located in the peripheral area and surrounds the display area.

[0032] In some embodiments, forming a second substrate on a side of the liquid crystal layer and the first supporting pillars facing away from the first insulating layer includes:

[0033] providing a second base substrate;

[0034] A color filter layer is formed on the second base substrate.

[0035] In a third aspect, an embodiment of the present disclosure further provides a display device, which includes a display panel as described in any of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A film layer layout of an existing display panel with an integrated directional sound device;

[0037] Figure 2 A film layer layout of a display panel provided in an embodiment of the present disclosure;

[0038] Figure 3 A top view of a first electrode and a display electrode provided in the same layer according to an embodiment of the present disclosure;

[0039] Figure 4 A top view of a first support column and a second support column provided in the embodiment of the present disclosure arranged on the same layer;

[0040] Figure 5 A top view of a sealing assembly provided in accordance with an embodiment of the present disclosure;

[0041] Figure 6 A top view of an exemplary plastic frame assembly provided in an embodiment of the present disclosure;

[0042] Figure 7 The overall film layer layout of the display panel provided in the embodiment of the present disclosure;

[0043] Figures 8a to 8g A schematic flow chart of a method for manufacturing a display panel provided in an embodiment of the present disclosure.

[0044] The reference numerals are as follows: 01, base substrate; 02, liquid crystal display structure; 03, directional sound device; 031, first electrode of directional sound device; 032, second electrode of directional sound device; 04, screen; 100, display panel; 10, first substrate; 20, second substrate; 30, liquid crystal layer; 40, first supporting column; 11, first base substrate; 12, display electrode; 13, first insulating layer; 50, directional sound structure; 51, first electrode; 52, second electrode; 53, first support column; 54, first support column; 55, first support column; 56, first support column; 57, first support column; 58, first support column; 59, first support column; 60, first support column; 61, first support column; 62, second support column; 63, first support column; 64, first support column; 65, first support column; 66, first support column; 67, first support column; 68, first support column; 69, first support column; 70, first support column; 71, first support column; 72, first support column; 73, first support column; 74, first support column; 75, first support column; 76, first support column; 77, first support column; 78, first support column; 79, first support column; 80, first support column; 81, first support column; 82, second support column; 83, first support column; 84, first support column; 85, first support column; 86, first support column; 87, first support column; 88, first support column; 89, first support column; 90, first support column; 91, first support column; 92, second support column; 93, first support column; 94, first support column; 95, first support column; 96, first support column; 97, first support column; 3. Second support column; 54. Frame assembly; 55. Second insulating layer; 61. Display area; 62. Peripheral area; 70. Sealing assembly; 541. First bonding unit; 542. Second bonding unit; 543. Third bonding unit; 544. Fourth bonding unit; 5410. First bonding portion; 5420. Second bonding portion; 5430. Third bonding portion; 5440. Fourth bonding portion; 21. Second base substrate; 22. Color filter layer; 81. First polarizer; 82. Second polarizer. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. The components of the embodiments of the present disclosure generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present disclosure provided in the drawings is not intended to limit the scope of the disclosure for which protection is sought, but merely represents selected embodiments of the present disclosure. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present disclosure.

[0046] Unless otherwise defined, the technical or scientific terms used in this disclosure should have the usual meanings understood by people with ordinary skills in the field to which this disclosure belongs. The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "an" or "the" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0047] In this disclosure, "multiple or several" refers to two or more. "And / or" describes the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0048] In the related art, screen sound generation in the display field is mainly achieved through the vibration of the middle frame or display screen within the display panel 100, avoiding the practice of opening holes in the screen to achieve sound generation, thereby increasing the screen-to-body ratio. Currently, there are two main ways for screen sound generation, one of which is cantilever piezoelectric ceramics, for example, the vibration of the piezoelectric ceramics is transmitted to the middle frame through the cantilever metal, and the sound is generated through the vibration of the middle frame. This sound generation method does not have good directionality because the sound is generated by the middle frame, resulting in poor privacy in audio transmission. The other is to use the traditional electromagnetic excitation principle to transmit the excited vibration to the screen through the metal, and generate sound through the vibration of the screen. Due to the vibration of the screen, the directionality of the sound in this sound generation method has been greatly improved, but the privacy and long-distance directional sound transmission still cannot meet the needs of some specific scenarios.

[0049] Figure 1 This is a film layer layout of an existing display panel with an integrated directional sound device, such as Figure 1 As shown, it includes a stacked substrate 01, a display structure 02, a directional sound structure 03 and a screen 04. The preparation method is to use piezoelectric film technology to make the directional sound structure 03 on the display structure 02, and then place it under the screen 04 and stack it with the screen 04. The sound is transmitted through the vibration of the screen 04, as shown in FIG. Figure 1 As shown, this stacking method increases the thickness of the display panel 100 , which is inconsistent with the current trend of thinner and lighter display panels 100 .

[0050] Based on this, the embodiment of the present disclosure provides a display panel 100, including a first substrate 10 and a second substrate 20 arranged opposite to each other, and a liquid crystal layer 30 and a first support column 40 arranged between the first substrate 10 and the second substrate 20; the first substrate 10 includes a first base substrate 11, and a display electrode 12 arranged on the first base substrate 11, and a first insulating layer 13 arranged on the side of the display electrode 12 close to the liquid crystal layer 30; wherein the display panel 100 also includes: a directional sound structure 50 arranged on the first base substrate 11; the directional sound structure 50 includes a plurality of directional sound structures arranged in sequence along a direction away from the first base substrate 11. The first functional layer and the second functional layer are arranged therein, a second supporting column 53 is located between the first functional layer and the second functional layer, and a rubber frame assembly 54 is located between the first functional layer and the second functional layer and connecting the two; the first functional layer includes a first electrode 51 arranged on the first base substrate 11, and the first insulating layer 13 covers the first electrode 51; the second functional layer includes a second insulating layer 55 and a second electrode 52 arranged in sequence along a direction away from the first base substrate 11; and the orthographic projections of the first electrode 51 and the second electrode 52 on the first base substrate 11 are located within the orthographic projection of the rubber frame assembly 54 on the first base substrate 11.

[0051] The disclosed embodiment integrates a directional sound-emitting structure 50 with a liquid crystal display structure 02. The directional sound-emitting structure 50 enables long-distance directional audio transmission, reduces sound attenuation, and thus prevents noise interference. By utilizing the directional sound-emitting structure 50 for directional sound generation, sound protection can be achieved without the need for headphones, preventing hearing loss caused by prolonged wearing of headphones. Furthermore, the directional sound-emitting structure 50 is disposed on the first base substrate 11, and the liquid crystal layer 30 and display electrodes 12 in the liquid crystal display structure 02 are also disposed on the first base substrate 11. This design, in which the directional sound-emitting structure 50 is integrated into the periphery of the liquid crystal display structure 02, meets the requirements for a thinner and lighter display panel 100.

[0052] The specific structure of the display panel 100 provided by the embodiment of the present disclosure is described in detail below. Figure 2 A film layer layout of a display panel provided in an embodiment of the present disclosure, such as Figure 2 As shown, the display panel 100 includes a first substrate 10 and a second substrate 20 disposed opposite each other, as well as a liquid crystal layer 30 and a first support column 40 disposed between the first substrate 10 and the second substrate 20. The first substrate 10 includes a first base substrate 11, a display electrode 12 disposed on the first base substrate 11, and a first insulating layer 13 disposed on the side of the display electrode 12 near the liquid crystal layer 30. Here, the first base substrate 11 can be a glass substrate containing a thin film transistor drive circuit. The display electrode 12 can include a pixel electrode and / or a common electrode. The display electrode 12 is used to provide a deflection voltage to the liquid crystal layer 30.

[0053] Continue as Figure 2 As shown, the display panel 100 also includes a directional sound-emitting structure 50 disposed on a first base substrate 11. The directional sound-emitting structure 50 includes a first functional layer and a second functional layer sequentially disposed in a direction away from the first base substrate 11, a second support column 53 located between the first and second functional layers, and a plastic frame assembly 54 located between the first and second functional layers and connecting the two. The first functional layer includes a first electrode 51 disposed on the first base substrate 11, with a first insulating layer 13 covering the first electrode 51. The second functional layer includes a second insulating layer 55 and a second electrode 52 sequentially disposed in a direction away from the first base substrate 11. The orthographic projections of the first and second electrodes 51, 52 on the first base substrate 11 are located within the orthographic projection of the plastic frame assembly 54 on the first base substrate 11.

[0054] Here, the second support column 53 is used to support the first functional layer and the second functional layer. The rubber frame assembly 54 connecting the first functional layer and the second functional layer together with the first functional layer and the second functional layer forms a cavity. By applying voltage to the first electrode 51 and the second electrode 52, the second functional membrane layer vibrates, thereby driving the gas in the cavity to vibrate and make sound.

[0055] The materials of the first electrode 51 and the second electrode 52 can be metal materials such as molybdenum (Mo), aluminum (Al), or copper (Cu). The material of the display electrode 12 can be a metal oxide material or a metal material. The metal oxide material can be, for example, indium tin oxide (ITO), indium zinc oxide (IZO), zinc tin oxide (ZTO), etc.; the metal material can be, for example, molybdenum (Mo), aluminum (Al), or copper (Cu). The first insulating layer 13 is used to protect the first electrode 51 and the display electrode 12 and enhance the electrode's ability to resist breakdown. The second insulating layer 55 is used to protect the second electrode 52 and enhance the second electrode 52's ability to resist breakdown.

[0056] In some embodiments, Figure 3 A top view of the first electrode and the display electrode provided in the embodiment of the present disclosure arranged in the same layer, as shown in FIG. Figure 3 As shown, the display panel 100 includes a display area 61 and a peripheral area 62 surrounding the display area 61 ; the first electrode 51 and the display electrode 12 are arranged in the same layer. The display electrode 12 is located in the display area 61 , and the first electrode 51 is located in the peripheral area 62 .

[0057] Optionally, the first electrode 51 and the display electrode 12 are made of the same material.

[0058] Optionally, the first electrode 51 and the display electrode 12 provided in the same layer can be formed by a single process, which can effectively save preparation steps, simplify the preparation process, and improve preparation efficiency.

[0059] In some embodiments, Figure 4A top view of the first support column and the second support column provided in the embodiment of the present disclosure arranged on the same layer, as shown in FIG. Figure 4 As shown, the display panel 100 includes a display area 61 and a peripheral area 62 surrounding the display area 61 ; the first support column 40 and the second support column 53 are arranged in the same layer. The first support column 40 is located in the display area 61 , and the second support column 53 is located in the peripheral area 62 .

[0060] Optionally, the first support column 40 and / or the second support column 53 are made of the same material. The first support column 40 and / or the second support column 53 can be made of an organic film or a resin-based organic material.

[0061] Optionally, the first support column 40 and the second support column 53 have the same size.

[0062] Optionally, the first support pillars 40 and the second support pillars 53 provided in the same layer can be prepared in one process, which can effectively save preparation steps, simplify the preparation process, and improve preparation efficiency.

[0063] It should be noted that the shape, size, spacing, height, etc. of the first support column 40 and the second support column 53 can be calculated by simulation to obtain appropriate parameters, which are not specifically limited in the embodiment of the present disclosure.

[0064] In some embodiments, Figure 5 A top view of a sealing assembly provided in an embodiment of the present disclosure, such as Figure 5 As shown, the display panel 100 includes a display area 61 and a peripheral area 62 surrounding the display area 61; the display panel 100 also includes a sealing component 70 located between the first substrate 10 and the second substrate 20 and sealing the liquid crystal layer 30; the sealing component 70 is located in the peripheral area 62 and surrounds the display area 61; the liquid crystal layer 30 is located in the display area 61.

[0065] Optionally, the sealing component 70 may be an optical adhesive for bonding the first substrate 10 and the second substrate 20 , thereby sealing the liquid crystal layer 30 .

[0066] In some embodiments, continue to refer to Figure 5 As shown, the sealing component 70 and the plastic frame component 54 are disposed on the same layer. The plastic frame component 54 is located in the peripheral area 62. The orthographic projections of the sealing component 70 and the plastic frame component 54 on the first base substrate 11 do not overlap.

[0067] Optionally, the sealing component 70 and the frame component 54 are made of the same material. The sealing component 70 and the frame component 54 are both made of optical adhesive (OCA).

[0068] Optionally, the sealing component 70 and the plastic frame component 54 arranged on the same layer can be prepared using a one-time process, which can effectively save preparation steps, simplify the preparation process, and improve preparation efficiency.

[0069] In some embodiments, as Figure 2 As shown, the second electrode 52 and the second insulating layer 55 constitute the diaphragm of the directional sound-emitting structure 50. Specifically, the second support column 53, the plastic frame assembly 54, the first insulating layer 13 and the second insulating layer 55 together form a cavity. When a voltage is applied to the first electrode 51 and the second electrode 52, the diaphragm vibrates, thereby driving the gas in the cavity to vibrate and produce sound.

[0070] In some embodiments, Figure 6 A top view of an exemplary plastic frame assembly provided in an embodiment of the present disclosure is shown as follows: Figure 6 As shown, the plastic frame assembly 54 is provided with a plurality of bonding portions; air circulation channels are formed between the plurality of bonding portions, and air enters the cavity through the air circulation channels.

[0071] In some embodiments, continue to refer to Figure 6 As shown, the multiple bonding portions are divided into multiple bonding units; each bonding unit includes at least one bonding portion. The bonding units include a first bonding unit 541 and a second bonding unit 542 arranged opposite each other along the length direction of the first substrate 11, and a third bonding unit 543 and a fourth bonding unit 544 arranged opposite each other along the width direction of the first substrate 11. Here, the length direction of the first substrate 11 is also the first direction X. The width direction of the first substrate 11 is also the second direction Y. The first direction X and the second direction Y are perpendicular to each other. The bonding portion in the first bonding unit 541 is the first bonding portion 5410, the bonding portion in the second bonding unit 542 is the second bonding portion 5420, the bonding portion in the third bonding unit 543 is the third bonding portion 5430, and the bonding portion in the fourth bonding unit 544 is the fourth bonding portion 5440.

[0072] Continue to refer to Figure 6 As shown, the first bonding portion 5410 in the first bonding unit 541 and the second bonding portion 5420 in the second bonding unit 542 are arranged opposite each other; the first width W1 of the air circulation channel between two adjacent first bonding portions 5410 is equal to the second width W2 of the air circulation channel between two adjacent second bonding portions 5420 arranged opposite each other. Here, the first bonding portions 5410 and the second bonding portions 5420 are arranged opposite each other, and the first width W1 and the second width W2 are equal, that is, air circulation channels arranged opposite each other along the first direction X and having the same width are formed, which facilitates air circulation, improves sound transmission efficiency, and promotes directional sound emission.

[0073] Continue to refer to Figure 6As shown, the third bonding portion 5430 in the third bonding unit 543 and the fourth bonding portion 5440 in the fourth bonding unit 544 are arranged opposite each other; the third width W3 of the air flow channel between two adjacent third bonding portions 5430 is equal to the fourth width W4 of the air flow channel between two adjacent second bonding portions 5420 arranged opposite each other. The third bonding portions 5430 and the fourth bonding portions 5440 are arranged opposite each other, and the third width W3 and the fourth width W4 are equal. This means that air flow channels of the same width are formed, which are arranged opposite each other along the second direction Y. This facilitates air circulation, improves sound transmission efficiency, and facilitates directional sound emission.

[0074] In some embodiments, continue to refer to Figure 6 As shown, the width of the air flow channel between two adjacent first bonding portions 5410 and fourth bonding portions 5440 is a fifth width W5; the width of the air flow channel between two adjacent first bonding portions 5410 and second bonding portions 5420 is a sixth width W6; and the fifth width W5 and the sixth width W6 are equal. Here, the fifth width W5 and the sixth width W6 are equal, thus forming air flow channels of the same width that are oppositely disposed along the second direction Y. This facilitates air flow, improves sound transmission efficiency, and facilitates directional sound emission.

[0075] Continue to refer to Figure 6 As shown, the width of the air flow channel between two adjacent second bonding portions 5420 and third bonding portions 5430 is the seventh width W7; the width of the air flow channel between two adjacent second bonding portions 5420 and fourth bonding portions 5440 is the eighth width W8; and the seventh width W7 and the eighth width W8 are equal. The seventh and eighth widths being equal here form air flow channels of the same width that are oppositely disposed along the first direction X, facilitating air circulation, improving sound transmission efficiency, and facilitating directional sound emission.

[0076] It should be noted that the equal width mentioned above can be understood as approximately equal width, and a certain preparation error is allowed.

[0077] In some embodiments, as Figure 1As shown, since the directional sound device 03 and the liquid crystal display structure 02 are superimposed, the first electrode 031 and the second electrode 032 of the directional sound device 03 are both transparent electrodes to achieve a light-transmitting effect. Here, the first electrode 031 and the second electrode 032 are prepared using a magnetron sputtering process, and the resistance is between 10 and 70Ω, but a larger resistance is likely to cause signal transmission delay, thereby affecting the directional sound effect. In the embodiment of the present disclosure, the resistance of the first electrode 51 and the second electrode 52 is set to be between 1Ω and 6Ω. Since the directional sound structure 50 in the embodiment of the present disclosure is located in the peripheral area 62, the first electrode 51 and the second electrode 52 do not need to use transparent electrodes (such as ITO), and metal can be directly used as the conductive material, which can form a first electrode 51 and a second electrode 52 with a smaller resistance, accelerate signal conduction to avoid delay, improve electric field uniformity, and help reduce power consumption and improve directional sound effect.

[0078] In some embodiments, the cavity thickness of the directional sound emitting structure 50 is between 5um and 20um.

[0079] In some embodiments, the liquid crystal cell thickness of the liquid crystal layer 30 is between 3 μm and 5 μm.

[0080] In some embodiments, as Figure 2 As shown, the second substrate 20 includes a second base substrate 21 and a color filter layer 22 disposed on a side of the second base substrate 21 near the liquid crystal layer 30. The color filter layer 22 is located in the display area 61. The orthographic projection of the second base substrate 21 on the first base substrate 11 covers the orthographic projection of the color filter layer 22, the liquid crystal layer 30, the first supporting layer, and the sealing structure on the first base substrate 11.

[0081] Figure 7 The overall film layer layout of the display panel provided in the embodiment of the present disclosure is provided. For the convenience of understanding the overall structure of the display panel 100 in the embodiment of the present disclosure, please refer to Figure 7 In some embodiments, the display panel 100 further includes a first polarizer 81 and a second polarizer 82, wherein the first polarizer 81 is disposed on a side of the first substrate 10 facing away from the second substrate 20, and the second polarizer 82 is disposed on a side of the second substrate 20 facing away from the first substrate 10. The first polarizer 81 and the second polarizer 82 are used for light filtering and are developed together with the liquid crystal layer 30.

[0082] The second polarizer 82, together with the second insulating layer 55 and the second electrode 52, serves as the diaphragm of the directional sound-emitting structure 50. Since a thinner diaphragm provides a better vibration effect, the thickness of the second polarizer 82 provided in the embodiment of the present disclosure is less than that of the first polarizer 81. Optionally, the thickness of the second polarizer 82 is between 45 μm and 55 μm, achieving an ultra-thin second polarizer 82 and, consequently, an ultra-thin diaphragm.

[0083] The first polarizer 81 may include a triacetylcellulose TAC film, a polyvinyl alcohol (PVA) film, a TAC film, and a polyphenylsulfone terephthalamide (PSA) film, sequentially arranged along the direction from the first substrate 10 to the second substrate 20. The second polarizer 82 may include a TAC film, a PVA film, a TAC film, or a polycyclopentadiene (OPC) film, sequentially arranged along the direction from the second substrate 20 to the first substrate 10. The TAC film is treated with nano-hardening HC, a surface treatment for the first polarizer 81 that prevents scratches.

[0084] The above is a detailed description of the various structures of the display panel 100 .

[0085] In addition, an embodiment of the present disclosure further provides a method for preparing a display panel 100 , which is mainly used to prepare the display panel 100 of any one of the above embodiments. Figures 8a to 8g A schematic diagram of a method for manufacturing a display panel according to an embodiment of the present disclosure is shown in FIG. Figures 8a to 8g As shown, it specifically includes steps S11 to S15, wherein:

[0086] S11, providing a first base substrate 11, and forming a first electrode 51 and a display electrode 12 on the first base substrate 11. Figure 8a As shown, the display panel 100 includes a display area 61 and a peripheral area 62 surrounding the display area 61 . The display electrode 12 is located in the display area 61 , and the first electrode 51 is located in the peripheral area 62 .

[0087] Illustratively, the first electrode 51 and the display electrode 12 can be prepared by screen printing.

[0088] S12, forming a first insulating layer 13 on the side of the first electrode 51 and the display electrode 12 away from the first base substrate 11. Figure 8b As shown, the first insulating layer 13 is located in the display area 61 and the peripheral area 62. The first insulating layer 13 is used to protect the first electrode 51 and the display electrode 12 and enhance the electrode's anti-puncture capability.

[0089] Illustratively, the first insulating layer 13 can be prepared by a thin film coating process.

[0090] S13 , forming a liquid crystal layer 30 , a first support column 40 , a plastic frame assembly 54 and a second support column 53 on a side of the first insulating layer 13 facing away from the first base substrate 11 .

[0091] Specifically, first, Figure 8cAs shown, a first support column 40 and a second support column 53 are formed on the side of the first insulating layer 13 away from the first base substrate 11. The first support column 40 is located in the display area 61, and the second support column 53 is located in the peripheral area 62. The first support column 40 is used to support the second substrate 20 and the first insulating layer 13.

[0092] Afterwards, if Figure 8d As shown, a plastic frame assembly 54 and a sealing assembly 70 are formed on the side of the first insulating layer 13 facing away from the first base substrate 11. The sealing assembly 70 is located in the peripheral area 62 and surrounds the display area 61. The first support pillars 40 are used to support the second substrate 20 and the first insulating layer 13, and together with the sealing assembly 70, form a space for accommodating the liquid crystal layer 30. Subsequently, the liquid crystal layer 30 is formed in this space.

[0093] S14, forming a second substrate 20 on the side of the liquid crystal layer 30 and the first support pillar 40 away from the first insulating layer 13. Figure 8e shown.

[0094] S15, forming a second insulating layer 55 and a second electrode 52 in sequence on the side of the plastic frame assembly 54 and the second support group away from the first insulating layer 13. Figure 8f As shown. The second insulating layer 55 is used to protect the second electrode 52 and enhance the anti-puncture capability of the second electrode 52. The second insulating layer 55 can be prepared by a thin film coating process. The second electrode 52 can be prepared by a screen printing process.

[0095] The above steps S11 to S15 realize the integration of the directional sound structure 50 and the display structure. The directional sound structure 50 realizes long-distance directional audio transmission, reduces the degree of sound attenuation, and thus prevents noise interference. The directional sound structure 50 is used to produce directional sound, and sound peeping can be achieved without wearing headphones, preventing the impact of wearing headphones for a long time on hearing. In addition, the directional sound structure 50 is arranged on the first base substrate 11, and the liquid crystal layer 30 and display electrodes 12 in the display structure are also arranged on the first base substrate 11. This design of integrating the directional sound structure 50 into the periphery of the display structure meets the requirements of the display panel 100 being lightweight and thin.

[0096] In some embodiments, the first electrode 51 and the display electrode 12 are in the same layer. Figure 8a As shown, the first electrode 51 and the display electrode 12 can be formed using a single process. For example, a screen printing process can be used to form the first electrode 51 and the display electrode 12 of equal thickness on the first base substrate 11. Here, the first electrode 51 and the display electrode 12 are made of the same material. Forming the first electrode 51 and the display electrode 12 simultaneously using a single process can effectively save preparation steps, simplify the preparation process, and improve preparation efficiency.

[0097] In some embodiments, the first support column 40 and the second support column 53 are on the same layer. Figure 8c As shown, the first support pillars 40 and the second support pillars 53 can be formed using a single process, wherein a mask is used for exposure and development, and the developed pattern is etched to obtain the first support pillars 40 and the second support pillars 53. Here, forming the first support pillars 40 and the second support pillars 53 simultaneously using a single process can effectively save preparation steps, simplify the preparation process, and improve preparation efficiency.

[0098] In some embodiments, a sealing component 70 is formed on a side of the first insulating layer 13 facing away from the first base substrate 11 ; the sealing component 70 is located in the peripheral area 62 and surrounds the display area 61 .

[0099] Optionally, the sealing component 70 and the plastic frame component 54 are on the same layer. Figure 8d As shown, the sealing component 70 and the frame assembly 54 can be formed using a single process, using a mask for exposure and development, and etching the developed pattern to obtain the sealing component 70 and the frame assembly 54. Here, forming the sealing component 70 and the frame assembly 54 simultaneously using a single process can effectively save preparation steps, simplify the preparation process, and improve preparation efficiency.

[0100] In some embodiments, for step S14, specifically, the second substrate 20 includes a second base substrate 21 and a color filter layer 22. The preparation steps for forming the second substrate 20 include providing a second base substrate 21; and forming the color filter layer 22 on the second base substrate 21. Here, the second base substrate 21 can be, for example, a flexible substrate such as a polyimide CPI film or a TAC film. Specifically, the steps include providing a third base substrate, forming the second base substrate 21 on the third base substrate, forming the color filter layer 22 on the second base substrate 21 facing away from the third base substrate, to obtain a third substrate structure, aligning the third substrate structure with the structure prepared in S13, for example, aligning the third substrate structure with the side of the liquid crystal layer 30 and the first support pillar 40 facing away from the first insulating layer 13, and removing the third base substrate to form the second substrate 20.

[0101] In some embodiments, for S15, a structure including a second insulating layer 55 and a second electrode 52 can be prepared separately, and then the structure can be aligned with the side of the second support column 53 and the frame assembly 54 facing away from the first insulating layer 13 to form an integrated structure. For example, a fourth base substrate can be provided, the second electrode 52 can be formed on the fourth base substrate, and the second insulating layer 55 can be formed on the side of the second electrode 52 facing away from the fourth base substrate to obtain a fourth substrate structure. The fourth substrate structure can be aligned with the structure prepared in S14, for example, the fourth substrate structure can be aligned with the side of the second support column 53 and the frame assembly 54 facing away from the first insulating layer 13, and the fourth base substrate can be removed to form an integrated structure.

[0102] In some embodiments, the second electrode 52 and the second insulating layer 55 constitute a diaphragm of the directional sound emitting structure 50 .

[0103] In some embodiments, as Figure 8g As shown, based on the structure formed in S15, a first polarizer 81 is formed on the side of the first substrate 10 facing away from the second substrate 20; and a second polarizer 82 is formed on the side of the second substrate 20 facing away from the first substrate 10. The first polarizer 81 and the second polarizer 82 can be prepared by a thin film coating process.

[0104] The first polarizer 81 includes a TAC film, a PVA film, a TAC film, and a PSA film, which are sequentially formed along the direction from the first substrate 10 to the second substrate 20. The PSA film is used to bond the first polarizer 81 to the first base substrate 11. The second polarizer 82 includes a TAC film, a PVA film, a TAC or an OPC film, which are sequentially arranged along the direction from the second substrate 20 to the first substrate 10. The TAC or COP film is used to bond the second polarizer 82 to the second electrode 52, the second insulating layer 55, and the second substrate 20.

[0105] The display panel 100 further includes a first polarizer 81 and a second polarizer 82. The first polarizer 81 is disposed on a side of the first substrate 10 facing away from the second substrate 20, and the second polarizer 82 is disposed on a side of the second substrate 20 facing away from the first substrate 10. The first polarizer 81 and the second polarizer 82 are used for light filtering and are developed together with the liquid crystal layer 30.

[0106] The present disclosure also provides a display device comprising the display panel 100 of any of the above-described embodiments. The display device may be, for example, a mobile phone, tablet computer, television, monitor, laptop computer, digital camera, vehicle-mounted device, or any other product with a display function. Other essential components of the display device are readily understood by those skilled in the art and are not described in detail herein, nor should they be construed as limiting the present disclosure.

[0107] It is understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present disclosure, and the present disclosure is not limited thereto. Those skilled in the art may make various modifications and improvements without departing from the spirit and substance of the present disclosure, and such modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A display panel comprising a display area and a peripheral area surrounding the display area; the display panel comprising a first substrate and a second substrate disposed opposite each other, a liquid crystal layer and a first support column disposed between the first and second substrates, a first polarizer disposed on a side of the first substrate facing away from the second substrate, and a second polarizer disposed on a side of the second substrate facing away from the first substrate; the second polarizer being thinner than the first polarizer; the first substrate comprising a first base substrate, a display electrode disposed on the first base substrate, and a first insulating layer disposed on a side of the display electrode near the liquid crystal layer; the second substrate comprising a second base substrate and a color filter layer disposed on a side of the second base substrate near the liquid crystal layer; in, The display panel further comprises: a directional sound emitting structure provided on the first substrate; the directional sound emitting structure is located in the peripheral area; The directional sound emitting structure includes a first functional layer and a second functional layer sequentially arranged in a direction away from the first substrate, a second support column located between the first functional layer and the second functional layer, and a rubber frame assembly located between the first functional layer and the second functional layer and connecting the two; The first functional layer includes a first electrode provided on the first base substrate, and the first insulating layer covers the first electrode; the second functional layer includes a second insulating layer and a second electrode provided in sequence in a direction away from the first base substrate; and the orthographic projections of the first electrode and the second electrode on the first base substrate are located within the orthographic projection of the frame assembly on the first base substrate; The second insulating layer wraps the second electrode, and a surface of the second insulating layer facing away from the first substrate is flush with a surface of the second electrode facing away from the first substrate; The second polarizer, the second electrode and the second insulating layer together constitute the diaphragm of the directional sound-emitting structure; The first electrode and the display electrode are provided in the same layer, and the first electrode and the display electrode are made of the same material; the first support column and the second support column are provided in the same layer, and the first support column and the second support column are made of the same material; the first support column is used to support the first substrate and the second substrate, and the second support column is used to support the first functional layer and the second functional layer; The display panel further includes a sealing assembly located between the first substrate and the second substrate and sealing the liquid crystal layer; the sealing assembly is located in the peripheral area and surrounds the display area; the sealing assembly is used to bond the first insulating layer and the second base substrate; the liquid crystal layer and the display electrodes are both located in the display area; the sealing assembly and the frame assembly are provided on the same layer and are made of the same material; The orthographic projection of the second base substrate on the base substrate does not overlap with the orthographic projection of the second insulating layer on the base substrate, and the side surface of the second base substrate extending along its thickness direction at least partially overlaps with the side surface of the second insulating layer extending along its thickness direction.

2. The display panel according to claim 1, wherein The plastic frame assembly is provided with a plurality of bonding parts; air circulation channels are formed between the plurality of bonding parts.

3. The display panel according to claim 2, wherein: The plurality of bonding portions are divided into a plurality of bonding units; each bonding unit includes at least one bonding portion; The bonding unit includes a first bonding unit and a second bonding unit that are oppositely arranged along the length direction of the first substrate, and a third bonding unit and a fourth bonding unit that are oppositely arranged along the width direction of the first substrate; The first bonding portion of the first bonding unit and the second bonding portion of the second bonding unit are arranged opposite to each other; a first width of the air circulation channel between two adjacent first bonding portions is equal to a second width of the air circulation channel between two adjacent second bonding portions arranged opposite to the two adjacent first bonding portions; The third bonding portion in the third bonding unit and the fourth bonding portion in the fourth bonding unit are arranged opposite to each other; the third width of the air circulation channel between two adjacent third bonding portions is equal to the fourth width of the air circulation channel between two adjacent fourth bonding portions arranged opposite to the two adjacent third bonding portions.

4. The display panel according to claim 3, wherein: The width of the air circulation channel between two adjacent first bonding portions and the fourth bonding portions is a fifth width; the width of the air circulation channel between two adjacent first bonding portions and the third bonding portions is a sixth width; the fifth width and the sixth width are equal; The width of the air circulation channel between two adjacent second bonding parts and the third bonding parts is the seventh width; the width of the air circulation channel between two adjacent second bonding parts and the fourth bonding parts is the eighth width; the seventh width and the eighth width are equal.

5. The display panel according to claim 1, wherein: The resistance of the first electrode and the second electrode is between 1Ω and 6Ω.

6. A method for preparing a display panel, wherein the method is used to prepare the display panel according to any one of claims 1 to 5, wherein the display panel comprises a display area and a peripheral area surrounding the display area; The method for preparing the display panel includes: Providing a first base substrate, forming a first electrode and a display electrode on the first base substrate, and forming a first polarizer on a side of the first base substrate facing away from the first electrode; wherein the first electrode is located in the peripheral area, and the display electrode is located in the display area; the first electrode and the display electrode are arranged in the same layer and are made of the same material; forming a first insulating layer on a side of the first electrode and the display electrode facing away from the first base substrate; A liquid crystal layer, a first support column, a plastic frame assembly, and a second support column are formed on a side of the first insulating layer facing away from the first base substrate; the liquid crystal layer and the first support column are located in the display area, and the second support column and the plastic frame assembly are located in the peripheral area; the first support column and the second support column are arranged in the same layer, and the first support column and the second support column are made of the same material; the first support column is used to support the first substrate and the second substrate, and the second support column is used to support the first functional layer and the second functional layer; forming a second substrate on a side of the liquid crystal layer and the first supporting pillar facing away from the first insulating layer; forming a second polarizer on a side of the second substrate facing away from the liquid crystal layer; the thickness of the second polarizer is less than that of the first polarizer; A second insulating layer and a second electrode are sequentially formed on a side of the rubber frame assembly and the second support column facing away from the first insulating layer; the second insulating layer and the second electrode are located in the peripheral area; the second insulating layer wraps around the second electrode, and a surface of the second insulating layer facing away from the first substrate is flush with a surface of the second electrode facing away from the first substrate; After forming the liquid crystal layer, the first supporting pillars, the frame assembly, and the second supporting pillars on the side of the first insulating layer facing away from the first base substrate, the method further includes: forming a sealing assembly on the side of the first insulating layer facing away from the first base substrate; the sealing assembly is located in the peripheral area and surrounds the display area; Forming a second substrate on the side of the liquid crystal layer and the first supporting pillar away from the first insulating layer, comprising: providing a second base substrate; forming a color filter layer on the second base substrate; The sealing assembly is used to bond the first insulating layer and the second base substrate; the sealing assembly and the frame assembly are arranged on the same layer, and the sealing assembly and the frame assembly are made of the same material; the orthographic projection of the second base substrate on the base substrate does not overlap with the orthographic projection of the second insulating layer on the base substrate, and the side surface of the second base substrate extending along its thickness direction at least partially overlaps with the side surface of the second insulating layer extending along its thickness direction.

7. A display device comprising the display panel according to any one of claims 1 to 5.

Images