Display panel and manufacturing method

Abstract

The embodiment of the application discloses a display panel and a preparation method, wherein the display panel comprises a substrate, an encapsulation plate, a pixel matrix and a refraction structure, wherein the substrate is used for arranging the pixel matrix; the encapsulation plate is arranged opposite to the substrate, and a gap is formed between the encapsulation plate and the substrate; the pixel matrix is used for emitting light; the refraction structure is arranged on a first side of the encapsulation plate corresponding to a pixel in the pixel matrix, the refraction structure is used for changing the angle of the light emitted by one or more pixels, and the first side is a side opposite to the substrate; thus, the angle of the light is changed by using the refraction structure, the interference phenomenon of the light is eliminated, and the problem that rainbow stripes appear on the display panel is avoided, and the display effect is improved.

Description

Technical Field

[0001] This application relates to the field of electronic devices, and includes, but is not limited to, a display panel and its manufacturing method. Background Technology

[0002] With the rapid development of science and technology, all kinds of electronic devices have emerged. At the same time, users are becoming increasingly dependent on electronic devices. Therefore, the display effect of electronic device screens is of paramount importance.

[0003] In related technologies, taking an Organic Light-Emitting Diode (OLED) screen as an example, an OLED can compose white light using the three primary colors red, green, and blue (RGB), where different primary colors correspond to different wavelengths. Let's assume RGB are λ1, λ2, and λ3 respectively. Figure 1 As shown, of the white light emitted by the OLED at position A, part S1 passes directly through the upper encapsulation glass to reach the human eye, while the other part S2 is reflected back by the upper glass. S2 is then reflected again by the OLED device layer and passes through the upper encapsulation glass to reach the human eye. At this point, S1 and S2 produce light interference. Assuming that the path difference between the two reflected beams at position A causes the blue (λ3) light to be in destructive interference, the blue (λ3) wavelength light is canceled out, and the final color is yellow, which is obtained by superimposing red (λ1) and green (λ2).

[0004] Similarly, targeting Figure 1 At position B, the angle of the human eye changes, and the optical path difference between the two reflected beams S3 and S4 also changes. Assuming that the optical path difference at this time enhances the wavelength of red (λ1) while canceling out the wavelength of green (λ2), the final color is purple, which is obtained by superimposing red (λ1) and blue (λ3).

[0005] This results in rainbow patterns appearing on the screen, affecting the display quality. Summary of the Invention

[0006] In view of this, embodiments of this application provide a display panel and a method for manufacturing it.

[0007] The technical solution of this application embodiment is implemented as follows:

[0008] This application provides a display panel, including:

[0009] The substrate, due to the arrangement of the pixel matrix;

[0010] The pixel matrix is ​​used to emit light;

[0011] A refractive structure is disposed on the first side of the encapsulation plate, corresponding to the pixels in the pixel matrix, for changing the angle of light emitted by one or more corresponding pixels. The first side is the side opposite to the substrate.

[0012] In some embodiments, the refractive structure is configured one-to-one with respect to the pixels, or the refractive structure is configured with respect to the pixel spacing.

[0013] In some embodiments, the cross-section of the refractive structure perpendicular to the encapsulation plate is wedge-shaped or trapezoidal.

[0014] In some embodiments, each pixel includes sub-pixels with different color components, each sub-pixel corresponds to at least one refractive structure, and the opening range of each sub-pixel is 20 micrometers to 50 micrometers.

[0015] In some embodiments, the display panel further includes a shielding structure disposed between different refractive structures; wherein:

[0016] The shielding structure is used to prevent other light from entering the encapsulation plate, wherein the other light is light emitted by the pixel that is not the light that enters the refractive structure.

[0017] In some embodiments, the vertical height of the shielding structure perpendicular to the direction of the packaging plate ranges from 1 micrometer to 3 micrometers;

[0018] The horizontal width of the shielding structure parallel to the direction of the encapsulation plate ranges from 2 micrometers to 10 micrometers.

[0019] In some embodiments, the display panel further includes a filling structure, wherein the refractive index of the filling structure is greater than the refractive index of air and less than the refractive index of the refractive structure; wherein:

[0020] The filling structure is used to fill the space between adjacent refractive structures, so that the first surface of the refractive structure is parallel to the second surface of the filling structure, thereby realizing the change of the angle of light by sequentially using the filling structure and the refractive structure; wherein, the first surface is the side of the refractive structure closer to the encapsulation plate, and the second surface is the side of the filling structure away from the encapsulation plate.

[0021] This application provides a method for manufacturing a display panel, the method comprising:

[0022] Obtain a substrate and set a pixel matrix on the substrate;

[0023] The encapsulation plate is disposed opposite to the substrate, such that a gap is formed between the substrate and the encapsulation plate;

[0024] Photoresist is coated on the first side of the packaging plate corresponding to the pixel matrix, and the photoresist is etched to form a refractive structure, wherein the first side is the side opposite to the substrate.

[0025] In some embodiments, the method further includes:

[0026] A microwave absorbing material is coated on the first side of the encapsulation plate;

[0027] The absorbing material is etched to obtain a shielding structure, which is disposed between different refractive structures.

[0028] In some embodiments, the method further includes:

[0029] A transition material is coated on the third surface of the refractive structure to form a filling structure, such that the first surface of the refractive structure is parallel to the second surface of the filling structure. The refractive index of the transition material is greater than that of air and less than that of the refractive structure.

[0030] Wherein, the third surface is the side of the refractive structure away from the encapsulation plate, the first surface is the side of the refractive structure close to the encapsulation plate, and the second surface is the side of the filling structure away from the encapsulation plate.

[0031] This application provides a display panel and its manufacturing method. The display panel includes a substrate, a packaging plate, a pixel matrix, and a refractive structure. The substrate is used to house the pixel matrix; the packaging plate is disposed opposite to the substrate, with a gap forming between them; the pixel matrix emits light; the refractive structure is disposed on a first side of the packaging plate, corresponding to the pixels in the pixel matrix. The refractive structure changes the angle of light emitted from one or more pixels, and the first side of the packaging plate is the side opposite to the substrate. By using the refractive structure to change the angle of the light emitted by the pixels, the light path is deflected. This eliminates light interference, thus avoiding rainbow patterns on the display panel; it also compensates for wide-viewing-angle light, enhancing the intensity of wide-viewing-angle light and improving the display effect. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of a display panel in related technologies;

[0033] Figure 2 This is one of the structural schematic diagrams of the display panel provided in the embodiments of this application;

[0034] Figure 3 This is a second schematic diagram of the display panel structure provided in an embodiment of this application;

[0035] Figure 4This is the third schematic diagram of the display panel structure provided in the embodiments of this application;

[0036] Figure 5 This is the fourth schematic diagram of the display panel structure provided in the embodiments of this application;

[0037] Figure 6 This is the fifth schematic diagram of the display panel structure provided in the embodiments of this application;

[0038] Figure 7 This is the sixth schematic diagram of the display panel structure provided in the embodiments of this application;

[0039] Figure 8 A schematic diagram of the wedge-shaped microstructure provided in the embodiments of this application;

[0040] Figure 9 A schematic diagram illustrating the change in angle of light rays within a wedge-shaped structure, as provided in an embodiment of this application;

[0041] Figure 10 The diagram shows the simulation results of the viewpoint provided in the embodiments of this application;

[0042] Figure 11 A schematic diagram of the boss structure provided in the embodiments of this application;

[0043] Figure 12 This is a schematic diagram illustrating one implementation flow of the preparation method provided in the embodiments of this application;

[0044] Figure 13 This is a schematic diagram illustrating another implementation process of the preparation method provided in the embodiments of this application. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The described embodiments should not be regarded as limitations on this application. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] In the following description, references are made to “some embodiments,” which describe a subset of all possible embodiments. However, it is understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0047] If the application documents contain similar descriptions such as "first, second, third", the following explanation shall be added: In the following description, the terms "first, second, third" are used only to distinguish similar objects and do not represent a specific order of objects. It is understood that "first, second, third" may be interchanged in a specific order or sequence where permitted, so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.

[0048] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0049] In detailing the embodiments of this application, for ease of explanation, the cross-sectional views illustrating the device structure will be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this application. In actual fabrication, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0050] Spatial relation terms such as “below,” “under,” “below,” “under,” “above,” “above,” etc., are used herein for convenience of description to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms are intended to also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, then the element or feature described as “below,” “under,” or “below” other elements or features will be oriented “above” other elements or features. Therefore, the exemplary terms “below” and “under” can include both above and below orientations. The device may be otherwise oriented (rotated 90 degrees or otherwise) and the spatial descriptive terms used herein will be interpreted accordingly.

[0051] In the context of this application, the structure described above the first feature may include embodiments in which the first and second features are in direct contact, or embodiments in which additional features are formed between the first and second features, such that the first and second features may not be in direct contact.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0053] In view of the problems existing in related technologies, this application provides a display panel. Figure 2 This is a schematic diagram of the composition structure of the display panel 10 provided in an embodiment of this application, as shown below. Figure 2 As shown, the electronic device 10 includes a substrate 101, a package plate 102, a pixel matrix 103, and a refractive structure 104. The substrate 101 is used to house the pixel matrix 103; the package plate 102 is disposed opposite to the substrate 101, with a gap forming between them; the pixel matrix 103 emits light; the refractive structure 104 is disposed on a first side 1021 of the package plate 102, corresponding to the pixels in the pixel matrix 103, and is used to change the angle at which one or more corresponding pixels emit light. The first side 1021 is the side opposite to the substrate 101.

[0054] In practical implementation, substrate 101 is the foundation of the entire device, and all functional layers need to be vapor-deposited onto substrate 101. Glass is typically used as substrate 101, but if flexible OLED devices are required, other materials such as plastics are needed. Substrate 101 is the basic material for manufacturing printed circuit boards (PCBs). Generally, substrate 101 is a copper-clad laminate. In the manufacturing of single-sided and double-sided PCBs, selective hole processing, chemical copper plating, electroplating, and etching are performed on the substrate material—copper-clad laminate (CCL)—to obtain the desired circuit pattern. Another type of multilayer PCB also uses a thin copper-clad laminate as a base, alternately laminating conductive pattern layers and prepreg together in a single process to form interconnections between three or more conductive pattern layers. It has the functions of conductivity, insulation, and support. The performance, quality, processability, manufacturing cost, and manufacturing level of printed circuit boards largely depend on the substrate material.

[0055] In practical implementation, a pixel matrix 103 is provided on the substrate 101. This pixel matrix 103 includes multiple pixels 1031, and each pixel 1031 can be composed of RGB sub-pixels 311. The RGB sub-pixels 311 can be arranged in a pentile pattern, meaning the area of ​​red and blue is twice that of green; alternatively, the RGB sub-pixels 311 can be arranged in a standard RGB pattern. A standard RGB pattern divides a square pixel into three equal parts, assigning each part a different color, thus forming a colored pixel. The order of the three sub-pixels is arbitrary, but is typically "red-green-blue" or "blue-green-red".

[0056] In some embodiments, the encapsulation plate 102 can also be made of glass, i.e., encapsulation glass. The encapsulation plate 102 is disposed opposite to the substrate 101. Taking a mobile phone screen as an example, if the mobile phone screen is facing upwards and placed on a table, the encapsulation plate 102 is located directly above the substrate 101, and the encapsulation plate 102 and the substrate 101 are the same size. In actual implementation, the encapsulation plate 102 and the substrate 101 can be bonded together using sealing adhesive. After bonding, a gap is formed between the encapsulation plate 102 and the substrate 101. The medium in this gap can be air, or an inert gas such as nitrogen or helium. This gap can also be referred to as a void gap.

[0057] In some embodiments, the pixel matrix 103 is used to emit light, and the pixel matrix 103 includes a plurality of pixels 1031, each of which may be composed of RGB sub-pixels 311.

[0058] In some embodiments, the refractive structure 104 is disposed on a first side 1021 of the encapsulation plate 102, which is the side opposite to the substrate 101, and the refractive structure 104 is correspondingly disposed with pixels 1031 in the pixel matrix 103, such as a one-to-one arrangement. The purpose of the corresponding arrangement is to change the angle of light emitted by the pixel 1031 through the refractive structure 104, so that the light enters the refractive structure 104 before entering the encapsulation plate 102, and the angle of the incoming light is changed by the refractive structure 104, thereby eliminating or reducing the light interference phenomenon that exists before the change, thus avoiding the occurrence of rainbow pattern problems. Here, the refractive structure 104 can be a light-transmitting photoresist.

[0059] In actual implementation, the refractive index of the refractive structure 104 is greater than the refractive index of the gas in the gap. When light enters the refractive structure 104, the refractive structure 104 can deflect the light towards the normal direction of the interface, thereby changing the angle of the light and avoiding interference. The interface indicates that the light enters the refractive structure from the corresponding surface of the refractive structure.

[0060] This application provides a display panel including a substrate, a packaging plate, a pixel matrix, and a refractive structure. The substrate is used to house the pixel matrix; the packaging plate is disposed opposite to the substrate, with a gap forming between them; the pixel matrix emits light; the refractive structure is disposed on a first side of the packaging plate, corresponding to the pixels in the pixel matrix, and is used to change the angle of light emitted from one or more pixels. The first side of the packaging plate is the side opposite to the substrate. Thus, by using the refractive structure to change the angle of the light emitted by the pixels, the light path is deflected, eliminating light interference and preventing rainbow patterns on the display panel. Furthermore, it compensates for wide-viewing-angle light, enhancing the intensity of wide-viewing-angle light and improving the display effect.

[0061] In some embodiments, in order to utilize the refractive structure 104 to alter the light emitted by each pixel 1031, such as Figure 3 As shown, the refractive structure 104 can be set one-to-one with the pixel 1031, that is, the correspondence between the refractive structure 104 and the pixel 1031 is one-to-one. Furthermore, to reduce manufacturing complexity and shorten the production cycle, such as... Figure 4 As shown, the refractive structure 104 can also be spaced apart from the pixels 1031, that is, the refractive structure 104 can be arranged in a one-to-many manner relative to the pixels 1031, meaning that the correspondence between the refractive structure 104 and the pixels 1031 is one-to-many. When the refractive structures are spaced apart, the angle of light can be changed by setting the refractive structures to avoid refraction; the spacing can also increase the transparency of the encapsulation board, that is, increase the display brightness.

[0062] To precisely compensate for large-angle lighting for each sub-pixel, continue to refer to... Figure 2 The refractive structure 104 can be set one-to-one with the sub-pixel 311, that is, the correspondence between the refractive structure 104 and the sub-pixel 311 is one-to-one, and the correspondence between the refractive structure 104 and the pixel 1031 is many-to-one. In actual implementation, the angle formed by the refractive structure 104 and the packaging plate 102 can be determined as the base angle of the refractive structure. As the base angle of the refractive structure increases, the thickness of the refractive structure needs to increase accordingly, and the manufacturing difficulty will also increase. Therefore, in some cases, the refractive structure can be decomposed into multiple parts. Taking the one-to-one correspondence between the refractive structure 104 and the sub-pixel 311 as an example, such as... Figure 5 As shown, the refractive structure can also be decomposed into three parts. After decomposition, the correspondence between the refractive structure 104 and the sub-pixel 311 is three to one. Of course, it can also be decomposed into two, four, five, etc. In one embodiment, each pixel 1031 can also be provided with multiple refractive structures, such as at least two (not shown), thereby reducing the thickness of the refractive structure. This increases the display brightness and reduces the manufacturing difficulty.

[0063] In the display panel, the aperture range of subpixel 311 is 20 micrometers to 50 micrometers, that is, the width occupied by subpixel 311 is between 20 micrometers and 50 micrometers.

[0064] In some embodiments, reference Figures 2 to 5 In any of the figures, the cross-section of the refractive structure 104 perpendicular to the packaging plate 102 can be wedge-shaped. In this case, the cross-section of the refractive structure 104 perpendicular to the substrate 101 is also wedge-shaped. The refractive structure can also be called a wedge structure or a wedge microstructure.

[0065] In some embodiments, since the wedge-shaped refractive structure reduces brightness at the viewing angle, in order to compensate for the brightness at the viewing angle, such as Figure 6 As shown, the cross-section of the refractive structure 104 perpendicular to the packaging plate 102 can also be trapezoidal. In this case, the cross-section of the refractive structure 104 perpendicular to the substrate 101 is also trapezoidal. In this case, the refractive structure can also be called a trapezoidal structure.

[0066] In this embodiment, on the one hand, the angle can be changed by the refractive structure to eliminate light interference and avoid rainbow patterns on the display panel; on the other hand, by setting the cross section of the refractive structure perpendicular to the encapsulation plate to be trapezoidal, the brightness at the viewing angle can be enhanced, thereby improving the display effect of the display panel.

[0067] In some embodiments, to achieve the purpose of privacy protection for the display panel 10, the display panel 10 further includes a shielding structure 105, see reference. Figures 2 to 6 In any image, the occlusion structure 105 is set between different refractive structures 104. In actual implementation, the occlusion structure 105 is set between the refractive structures 104 corresponding to different sub-pixels 311. That is, no occlusion structure 105 is set between the refractive structures 104 corresponding to the same sub-pixel 311.

[0068] The blocking structure 105 is used to prevent other light from entering the encapsulation plate 102, which is equivalent to preventing other light from entering the outside from the encapsulation plate 102. Here, "other light" refers to light that does not enter the refraction structure 104; that is, light whose angle is not changed is blocked by the blocking structure 105 and will not form the light that ultimately passes through the encapsulation plate for display. Here, the blocking structure 105 can be a dark, opaque material. For example, the blocking structure 105 is a Black Matrix (BM). The blocking structure 105 eliminates stray light at large viewing angles, thereby solving the problem of rainbow patterns appearing at large viewing angles.

[0069] In actual implementation, the vertical height of the shielding structure 105 in the direction perpendicular to the packaging plate 102 is between 1 micrometer and 3 micrometers; the horizontal width of the shielding structure 105 in the direction parallel to the packaging plate 102 is between 2 micrometers and 10 micrometers.

[0070] In this embodiment of the application, the shielding structure provided on the display panel can block other light, which is generally light at a large angle. After the shielding structure blocks the light at a large angle, the light at a large angle cannot pass through the encapsulation plate to form the display light. In this way, the purpose of not being able to see the display content of the display panel at a large angle is achieved, that is, the anti-peeping function of the display panel is achieved.

[0071] In some embodiments, in order to increase the deflection angle, such as Figure 7As shown, the display panel 10 may further include a filling structure 106, the refractive index of which is greater than that of air and less than that of the refractive structure 104. For example, the refractive index of the refractive structure 104 may be 1.6 and the refractive index of the filling structure 106 may be 1.2.

[0072] The filling structure 106 fills the space between adjacent refractive structures 104, making the first surface 1041 of the refractive structure 104 parallel to the second surface 1061 of the filling structure 106. This allows the angle of light to be changed sequentially using the filling structure 106 and the refractive structure 104, increasing the deflection angle through these two changes. The first surface 1041 is the side of the refractive structure 104 closest to the encapsulation plate 102, and the second surface 1061 is the side of the filling structure 106 furthest from the encapsulation plate 102.

[0073] In the embodiments of this application, the filling material can increase the number of light refractions and the deflection angle of the light, which can not only eliminate the interference of light, but also enhance the brightness at the viewing angle, thereby achieving a better display effect.

[0074] Figure 8 The present application provides schematic diagrams of wedge-shaped microstructures, wherein (a) is a schematic diagram of a wedge-shaped microstructure with a 12-degree slope, (b) is a schematic diagram of a wedge-shaped microstructure with a 17-degree slope, (c) is a schematic diagram of a wedge-shaped microstructure with a 20-degree slope, and (d) is a schematic diagram of a wedge-shaped microstructure with a 30-degree slope.

[0075] Figure 9 This diagram illustrates the change in angle of light rays within a wedge-shaped structure. Here, 'n' represents a low-refractive-index material with a refractive index of 1.2. The light ray initially enters the low-refractive-index material perpendicularly without refraction. Next, it enters the wedge-shaped structure at an incident angle θ, which also represents the base angle of the wedge. The light ray refracts within the wedge-shaped structure at an angle 'i'. 'ni' refers to the wedge-shaped structure itself.

[0076] Table 1 shows the correspondence between the base angle and the deflection angle of the wedge structure. When the base angle is 15 degrees, the refraction angle is 11.193 degrees, and the angle of light deflection is approximately 3.81 degrees; when the base angle is 30 degrees, the refraction angle is 22.0243 degrees, and the angle of light deflection is approximately 7.96 degrees; when the base angle is 45 degrees, the refraction angle is 32.0278 degrees, and the angle of light deflection is approximately 12.97 degrees; when the base angle is 60 degrees, the refraction angle is 40.5054 degrees, and the angle of light deflection is approximately 19.49 degrees.

[0077] Table 1. Correspondence between the base angle and deflection angle of the wedge structure.

[0078] Base angle θ (degrees) Base angle θ radians SINθ SIN i ni n I-radian I(degree) Deflection angle 15 0.2617994 0.25882 0.19411 1.6 1.2 0.19535 11.193 3.80701283 30 0.5235988 0.5 0.375 1.6 1.2 0.3844 22.0243 7.975687163 45 0.7853982 0.70711 0.53033 1.6 1.2 0.55899 32.0278 12.97223989 60 1.0471976 0.86603 0.64952 1.6 1.2 0.70695 40.5054 19.49464967

[0079] Figure 10 The diagram shows the simulated viewing angle results provided in this application embodiment. Solid lines represent test results from related technologies, with a maximum brightness of 1690 nits. However, the brightness drops sharply when the viewing angle is less than -70 degrees or greater than 65 degrees. Dashed lines represent the simulated viewing angle results using the display panel provided in this application embodiment, with a maximum brightness of 1080 nits. Even at wide viewing angles of 70 degrees or 80 degrees, it still exhibits a brightness of over 500 nits, demonstrating a good display effect at wide viewing angles. Similarly, it also demonstrates a good display effect at wide viewing angles of -65 degrees or even -75 degrees.

[0080] In practical implementation, the wedge-shaped structure increases the viewing angle, but reduces brightness at the direct viewing angle. As shown in Table 1, the bottom angle of the wedge-shaped structure is 45 degrees, and the deflection angle is approximately 12 degrees. (Reference) Figure 10 At this point, the brightness decreases by approximately 35% compared to the normal viewing angle without deflection. That is, the wedge structure will lose brightness at the normal viewing angle or a small angle. To compensate for the brightness at the normal viewing angle or a small angle, such as... Figure 11 As shown, the microstructure can be a trapezoidal structure, also known as a boss. The center of the boss is a planar structure, which enhances the light intensity at the normal viewing angle. The edges of the boss are designed as wedge-shaped structures to increase the deflection of the light path and increase the viewing angle. The light can be deflected towards the normal viewing angle through the side of the boss, where the incident angle is θ, the refraction angle is i, ni refers to the boss, and n is the low-refractive material.

[0081] Because the refractive index of the gap differs from that of the wedge or trapezoidal structure, light refracts when entering the wedge or trapezoidal structure from the gap, thus compensating for light rays at large viewing angles and enhancing their intensity. By incorporating a BM structure, stray light at large viewing angles can be eliminated, thereby resolving the issue of rainbow patterns appearing at wide viewing angles.

[0082] This application provides a method for manufacturing a display panel, applicable to the aforementioned display panel, such as... Figure 12 As shown, the method includes:

[0083] Step S1201: Obtain the substrate and set the pixel matrix on the substrate.

[0084] Here, glass is used as the substrate, and a substrate is prepared using processes such as Oxide and LTPS. The pixel matrix can be deposited on the substrate by vapor deposition.

[0085] Step S1202: The packaging plate is positioned opposite to the substrate, so that a gap is formed between the substrate and the packaging plate.

[0086] Here, relative arrangement can characterize the positional relationship between the package plate and the substrate. For example, if the substrate is below, the package plate can be placed directly above the substrate; if the substrate is on the left, the package plate can be placed on the right side of the substrate, so that the position of the package plate corresponds to the position of the substrate.

[0087] In this embodiment, the substrate and the encapsulation board are also fixed together by a sealing adhesive, and a gap is formed between them. The medium in the gap can be air or an inactive gas such as nitrogen or helium.

[0088] In step S1203, photoresist is coated on the first side of the packaged board corresponding to the pixel matrix, and the photoresist is etched to form a refractive structure.

[0089] Here, the first side is the side opposite to the substrate, the first side is also the side facing the substrate, and the first side is also the side facing the pixel matrix on the substrate. The photoresist can be a positive photoresist or a negative photoresist, and can also be one of the following: ultraviolet photoresist (including ultraviolet positive and negative photoresists), deep ultraviolet photoresist, X-ray photoresist, electron beam photoresist, and ion beam photoresist. For example, the photoresist can be polyamide.

[0090] In this embodiment, the etching method corresponding to the photoresist is first determined, and then the photoresist is etched based on the etching method to obtain the final refractive structure. Here, etching can be performed using techniques such as wet etching, excimer lithography, extreme ultraviolet lithography, and electron beam lithography.

[0091] In this embodiment, through steps S1201 to S1203, a pixel matrix is ​​formed on the substrate, and a packaging plate is disposed opposite to the substrate, creating a gap between the substrate and the packaging plate. Next, photoresist is coated on a first side of the packaging plate, and a refractive structure is obtained through etching. The first side is the side opposite to the substrate and also the side opposite to the pixel matrix on the substrate. This refractive structure changes the angle of light, eliminating light interference and preventing rainbow patterns on the display panel, ultimately improving the display effect.

[0092] In some embodiments, the fabrication method further includes fabricating a shielding structure and a filling structure, such as... Figure 13 As shown, the preparation method further includes the following steps S1204 to S1206:

[0093] Step S1204: Coat the first side of the encapsulation board with a microwave absorbing material.

[0094] Here, the absorbing material can be a dark, opaque material; for example, the absorbing material can be a mixture of acrylamide resin and toner.

[0095] Step S1025: Etch the absorbing material to obtain the shielding structure.

[0096] Here, the shielding structure is positioned between different refractive structures. The etching method can refer to the etching method in step S1203 above.

[0097] Step S1026: A transition material is coated on the third surface of the refractive structure to form a filling structure, such that the first surface of the refractive structure is parallel to the second surface of the filling structure.

[0098] Here, the refractive index of the transition material is greater than that of air, but less than that of the refractive structure. The third side is the side of the refractive structure away from the encapsulation plate, the first side is the side of the refractive structure close to the encapsulation plate, and the second side is the side of the filling structure away from the encapsulation plate.

[0099] In this embodiment, the transition material can be a mixture of resin and silicon dioxide. The refractive index of this material is greater than that of the gap and less than that of the refractive structure. This ensures that the light enters the high refractive index twice from the low refractive index, causing the light to be deflected twice, and both times it is deflected in the direction of the normal.

[0100] In this embodiment of the application, through the above steps S1204 to S1206, an etch process is used to obtain a shielding structure and a filling structure. The shielding structure blocks light at a large angle, and the filling structure changes the angle of the light again, thereby obtaining a display panel with good display effect and preventing peeping.

[0101] Based on the above embodiments, this application further provides a method for manufacturing a display panel, wherein the substrate can be a thin film transistor (TFT) backplane, the encapsulation plate can be an encapsulation glass layer, and the manufacturing method can include the following steps one and two:

[0102] Step 1: Prepare the TFT backplane.

[0103] TFT backplanes can be fabricated on glass substrates using processes such as Oxide and LTPS.

[0104] Step 2: Prepare the encapsulation glass layer.

[0105] First, a BM is fabricated on a glass substrate. The thickness of the BM can be from 1 micrometer to 3 micrometers, or from 5 micrometers to 10 micrometers.

[0106] Next, a wedge-shaped structure is fabricated. This structure can be prepared from resin using a step-exposure method. The correspondence between the wedge-shaped structure and the sub-pixels can be one-to-one or many-to-one.

[0107] The wedge structure can increase the side view angle, and the deflection angle will also increase as the base angle of the wedge structure increases.

[0108] Since the aperture of a subpixel is approximately 20 to 50 micrometers, the thickness of a single wedge structure increases with the angle of its base corner, increasing the manufacturing difficulty and potentially leading to an increase in the thickness of the display panel. Therefore, to increase the manufacturing window, a single wedge structure is broken down into several smaller wedges, for example, three. This increases the manufacturing window.

[0109] To compensate for brightness at the positive viewing angle, a boss structure is designed. The center of the boss is a planar structure, which enhances the light intensity at the positive viewing angle. The edges of the boss are designed with a wedge-shaped structure to increase the deflection of the light path and increase the viewing angle.

[0110] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. It should be understood that in the various embodiments of this application, the sequence numbers of the above-described processes do not imply a sequential order of execution; the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application. The sequence numbers of the above-described embodiments are merely descriptive and do not represent the superiority or inferiority of the embodiments.

[0111] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0112] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods, such as: multiple units or components can be combined, or integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be electrical, mechanical, or other forms.

[0113] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units. They may be located in one place or distributed across multiple network units. Some or all of the units may be selected to achieve the purpose of the embodiments of this application, depending on actual needs.

[0114] In addition, each functional unit in the various embodiments of this application can be integrated into one processing unit, or each unit can be a separate unit, or two or more units can be integrated into one unit; the integrated unit can be implemented in hardware or in the form of hardware plus software functional units.

[0115] The above description is merely an embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A display panel, comprising: A substrate used to set up the pixel matrix; A packaging plate is disposed opposite to the substrate and forms a gap between them; The pixel matrix is ​​used to emit light; A refractive structure is disposed on the first side of the encapsulation plate. The refractive structure is disposed one-to-one with the pixel or spaced apart with respect to the pixel. It is used to change the angle of light emitted by one or more corresponding pixels. The first side is the side opposite to the substrate. The refractive index of the refractive structure is greater than the refractive index of the gas in the gap. The gas is air or an inactive gas. A filling structure has a refractive index greater than that of air and less than that of the refractive structure. The filling structure is used to fill the space between adjacent refractive structures. A first surface of the refractive structure is parallel to a second surface of the filling structure, thereby changing the angle of light by sequentially using the filling structure and the refractive structure. The first surface is the side of the refractive structure closest to the encapsulation plate, and the second surface is the side of the filling structure furthest from the encapsulation plate.

2. The display panel according to claim 1, wherein the cross-section of the refractive structure perpendicular to the encapsulation plate is wedge-shaped or trapezoidal.

3. The display panel according to claim 1, wherein each pixel includes sub-pixels with different color components, and each sub-pixel corresponds to at least one refractive structure.

4. The display panel according to claim 1 further includes a shielding structure, the shielding structure being disposed between different refractive structures; wherein: The shielding structure is used to prevent other light from entering the encapsulation plate, wherein the other light is light emitted by the pixel that is not the light that enters the refractive structure.

5. The display panel according to claim 4, wherein: The vertical height of the shielding structure perpendicular to the direction of the packaging plate ranges from 1 micrometer to 3 micrometers; The horizontal width of the shielding structure parallel to the direction of the encapsulation plate ranges from 2 micrometers to 10 micrometers.

6. A method for manufacturing a display panel, the method comprising: Obtain a substrate and set a pixel matrix on the substrate; The encapsulation plate is disposed opposite to the substrate, such that a gap is formed between the substrate and the encapsulation plate; Photoresist is coated on the first side of the packaging plate corresponding to the pixel matrix, and the photoresist is etched to form a refractive structure. The first side is the side opposite to the substrate. The refractive structure is set one-to-one with the pixel, or the refractive structure is set at intervals with respect to the pixel. The refractive index of the refractive structure is greater than the refractive index of the gas in the gap. A transition material is coated on the third surface of the refractive structure to form a filling structure. The refractive index of the transition material is greater than that of air and less than that of the refractive structure. The gas is air or an inactive gas. The first surface of the refractive structure is parallel to the second surface of the filling structure, thereby changing the angle of light by sequentially using the filling structure and the refractive structure. The first surface is the side of the refractive structure closest to the encapsulation plate, the second surface is the side of the filling structure furthest from the encapsulation plate, and the third surface is the side of the refractive structure furthest from the encapsulation plate.

7. The method according to claim 6, further comprising: A microwave absorbing material is coated on the first side of the encapsulation plate; The absorbing material is etched to obtain a shielding structure, which is disposed between different refractive structures.

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