Display panel, display equipment, manufacturing method, grating determination method and device

Abstract

The invention discloses a display panel, display equipment, a manufacturing method of the display panel, a determination method of a two-dimensional grating and a determination device of the two-dimensional grating. The display panel comprises a touch layer, a display layer and a two-dimensional grating, wherein the two-dimensional grating is arranged between the touch layer and the display layer. According to the display panel, the two-dimensional grating is arranged between the touch layer and the display layer, and the light of the display layer is diffracted through the two-dimensional grating, so that the diffracted light is not shielded by the touch layer, and gray spots and moire patterns are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of display devices, and more specifically, to a display panel, a display device, a method for manufacturing a display panel, a method for determining a two-dimensional grating, and a device for determining a two-dimensional grating. Background Art

[0002] Metal Mesh is the preferred solution for high-end products because of its excellent impedance performance and can support active capacitive pen technology. However, the pixels of displays with high module PPI are densely distributed, and metal mesh can easily block its RGB pixels, resulting in gray dots. In addition, the periodic pattern of the metal mesh will periodically interfere with the color filter pattern of the display, forming moiré patterns that can be captured by the naked eye. In the related art, there is a lack of methods to solve the above-mentioned gray dots and moiré patterns. Summary of the invention

[0003] Embodiments of the present invention provide a display panel, a display device, a method for manufacturing a display panel, a method for determining a two-dimensional grating, and a device for determining a two-dimensional grating.

[0004] An embodiment of the present invention provides a display panel, comprising a touch layer, a display layer and a two-dimensional grating, wherein the two-dimensional grating is arranged between the touch layer and the display layer.

[0005] In this way, a two-dimensional grating is arranged between the touch layer and the display layer, and the light of the display layer is diffracted by the two-dimensional grating, so that the touch layer does not block the diffracted light, thereby avoiding the generation of gray spots and moiré patterns.

[0006] In some embodiments, the two-dimensional grating includes a light-shielding area and a light-transmitting area. The two-dimensional grating includes a plurality of protrusions arranged in an array, the plurality of protrusions form the light-shielding area, and the light-transmitting area is formed between any two adjacent protrusions. The light-transmitting area and the light-shielding area can diffract the light of the display layer.

[0007] In this way, the light of the display layer is diffracted by the light-transmitting area and the light-shielding area of ​​the two-dimensional grating, so that the two-dimensional grating can redistribute the light intensity of the display layer, thereby making the shielding rate of the touch layer to the light of the display layer lower than the set threshold.

[0008] In some embodiments, the touch layer includes a metal grid.

[0009] In this way, the metal grid can make the touch layer have better touch capability. In addition, determining the grating constant and grid width of the two-dimensional grating based on the metal grid and the display layer can make the two-dimensional grating diffract the light of the display layer more effectively, so that the two-dimensional grating can better reduce the light blocking rate of the metal grid.

[0010] In some embodiments, the two-dimensional grating is used to diffract the light of the display layer and obtain a point array diffraction image, wherein the point array diffraction image includes a plurality of light spots arranged in an array, and the occlusion rate of the touch layer on the light spots is less than a set threshold.

[0011] In this way, the light of the display layer is diffracted by the two-dimensional grating to form a dot array diffraction image with uniformly distributed light spots, thereby redistributing the light intensity of the display layer to reduce the light blocking by the touch layer and avoid the generation of gray spots and moiré patterns.

[0012] In some embodiments, the two-dimensional grating is a resin layer, and a grid pattern is provided on a side of the resin layer facing away from the display layer, wherein the grid pattern includes a plurality of protrusions arranged in an array.

[0013] In this way, by providing a grid pattern on the resin layer, the resin layer can be made into a two-dimensional grid structure, and a plurality of protrusions arranged in an array in the grid pattern can diffract the light of the display layer.

[0014] In some embodiments, the touch layer includes an insulating layer, the insulating layer is in direct contact with the two-dimensional grating, and the shape of the insulating layer and the contact surface of the two-dimensional grating match.

[0015] In this way, the insulating layer is in direct contact with the two-dimensional grating, and the shapes of the insulating layer and the contact surface of the two-dimensional grating match, so that the two-dimensional grating and the touch layer are closely connected, so that the two-dimensional grating has a better diffraction effect on the light of the display layer.

[0016] An embodiment of the present invention provides a display device, comprising the display panel of any one of the above embodiments and a housing, wherein the display panel is disposed in the housing.

[0017] In this way, a two-dimensional grating is arranged between the touch layer and the display layer, and the light of the display layer is diffracted by the two-dimensional grating, so that the touch layer does not block the diffracted light, thereby avoiding the generation of gray spots and moiré patterns.

[0018] An embodiment of the present invention provides a method for manufacturing a display panel, wherein the display panel includes a touch layer, a display layer and a two-dimensional grating, wherein the two-dimensional grating is arranged between the touch layer and the display layer, and the manufacturing method includes: plating an insulating layer on the touch layer; exposing the insulating layer to obtain a raised pattern; and coating a resin layer at the raised pattern, wherein the resin layer constitutes the two-dimensional grating.

[0019] In this way, by plating an insulating layer on the touch layer and exposing the insulating layer, a raised pattern can be formed on the insulating layer, and then a resin layer is coated on the insulating layer, so that the resin layer also has a grid pattern, and the resin layer constitutes a two-dimensional grid to diffract the light of the display layer.

[0020] An embodiment of the present invention provides a method for determining a two-dimensional grating, wherein the two-dimensional grating is arranged between a touch layer and a display layer, and the touch layer includes a metal grid. The determination method includes: setting an assumed grating constant and an assumed grid width; determining a two-dimensional grating matrix according to the assumed grating constant and the assumed grid width; obtaining an output image according to the two-dimensional grating matrix, a display layer matrix, and a metal grid matrix, wherein the display layer matrix is ​​determined according to the display layer, and the metal grid matrix is ​​determined according to the metal grid; if the moiré degree of the output image is greater than the set degree, resetting the assumed grating constant and the assumed grid width; if the moiré degree of the output image is less than the set degree, determining the two-dimensional grating according to the assumed grating constant and the assumed grid width.

[0021] In this way, the moiré degree of the output image determined by the two-dimensional grating matrix, the display layer matrix and the metal grid matrix can determine whether the assumed grating constant and the assumed grid width of the two-dimensional grating matrix are appropriate. If the moiré degree is less than the set degree, the assumed grating constant and the assumed grid width are appropriate; if the moiré degree is greater than the set degree, the assumed grating constant and the assumed grid width are inappropriate, and the assumed grating constant and the assumed grid width are reset.

[0022] In certain embodiments, obtaining an output image based on the two-dimensional grating matrix, the display layer matrix, and the metal grid matrix includes: determining a first superposition matrix based on the two-dimensional grating matrix and the display layer matrix; obtaining a two-dimensional grating diffraction image based on the first superposition matrix; determining a second superposition matrix based on the two-dimensional grating diffraction image and the metal grid matrix; and performing a two-dimensional Fourier transform on the second superposition matrix to obtain the output image.

[0023] In this way, by performing a two-dimensional Fourier transform on the two-dimensional grating diffraction image and the second superposition matrix determined by the metal grid matrix, an output image can be obtained. According to the degree of moiré in the output image, it can be determined whether the assumed grating constant and assumed grid width of the two-dimensional grating matrix are appropriate.

[0024] In some embodiments, obtaining a two-dimensional grating diffraction image based on the first superposition matrix includes: performing a two-dimensional Fourier transform on the first superposition matrix to obtain an image spectrum complex matrix; spectrally shifting the image spectrum complex matrix to move the zero-frequency component to the center of the spectrum; taking the modulus of the image spectrum complex matrix after the spectrum shift to obtain an image amplitude spectrum; squaring the image amplitude spectrum to obtain a light intensity distribution; and determining the two-dimensional grating diffraction image based on the light intensity distribution.

[0025] In this way, a two-dimensional grating diffraction image can be obtained by performing backward two-dimensional Fourier transform, spectrum shift, modulo and square operations on the first superposition matrix. An output image can be obtained based on the two-dimensional grating diffraction image and the metal grid matrix. Based on the degree of moiré in the output image, it can be determined whether the assumed grating constant and assumed grid width of the two-dimensional grating matrix are appropriate.

[0026] An embodiment of the present invention provides a device for determining a two-dimensional grating, wherein the two-dimensional grating is arranged between a touch layer and a display layer, and the touch layer includes a metal grid. The device includes: a first setting module, a first determining module, a second determining module, a second setting module, and a third determining module, wherein the first setting module is used to set an assumed grating constant and an assumed grid width; the first determining module is used to determine a two-dimensional grating matrix according to the assumed grating constant and the assumed grid width; the second determining module is used to obtain an output image according to the two-dimensional grating matrix, a display layer matrix, and a metal grid matrix, wherein the display layer matrix is ​​determined according to the display layer, and the metal grid matrix is ​​determined according to the metal grid; if the moiré degree of the output image is greater than a set degree, the second setting module is used to reset the assumed grating constant and the assumed grid width; if the moiré degree of the output image is less than a set degree, the third determining module is used to determine the two-dimensional grating according to the assumed grating constant and the assumed grid width.

[0027] Thus, the determination device of the present invention sets a two-dimensional grating between the touch layer and the display layer, and diffracts the light of the display layer through the two-dimensional grating, so that the touch layer does not block the diffracted light, thereby avoiding the generation of gray spots and moiré patterns.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0030] Figure 1is a schematic diagram of a display panel according to an embodiment of the present invention;

[0031] Figure 2 is a schematic diagram of the connection between the touch layer and the two-dimensional grating according to an embodiment of the present invention;

[0032] Figure 3 is a schematic diagram of a two-dimensional grating according to an embodiment of the present invention;

[0033] Figure 4 is a schematic diagram of the shielding of the display layer by the metal grid in the related art;

[0034] Figure 5 is a schematic diagram of the gray dot phenomenon of the related art;

[0035] Figure 6 is a schematic diagram of a moiré phenomenon in the related art;

[0036] Figure 7 is a schematic diagram of a dot array diffraction image according to an embodiment of the present invention;

[0037] Figure 8 is a schematic flow chart of a manufacturing method according to an embodiment of the present invention;

[0038] Fig. 9 It is a schematic diagram of the connection between the touch layer and the two-dimensional grating;

[0039] Fig.10 is a flow chart of a determination method according to an embodiment of the present invention;

[0040] Fig.11 is a schematic diagram of a determination device according to an embodiment of the present invention;

[0041] Fig.12 is a flow chart of a determination method according to an embodiment of the present invention;

[0042] Fig.13 is a schematic diagram of a second determination module according to an embodiment of the present invention;

[0043] Fig.14 is a flow chart of a determination method according to an embodiment of the present invention;

[0044] Fig.15 is a schematic diagram of a second determination submodule according to an embodiment of the present invention. DETAILED DESCRIPTION

[0045] The embodiments of the present invention are described in detail below, and the embodiments of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0046] Metal Mesh is the preferred solution for high-end products because of its excellent impedance performance and can support active capacitive pen technology. However, the pixels of displays with high module PPI are densely distributed, and metal mesh can easily block its RGB pixels, resulting in gray dots. In addition, the periodic pattern of the metal mesh will periodically interfere with the color filter pattern of the display, forming moiré patterns that can be captured by the naked eye. In the related art, there is a lack of methods to solve the above-mentioned gray dots and moiré patterns.

[0047] See also Figure 1 An embodiment of the present invention provides a display panel 100, which includes a touch layer 10, a display layer 20 and a two-dimensional grating 30. The two-dimensional grating 30 is arranged between the touch layer 10 and the display layer 20. The two-dimensional grating 30 is used to diffract the light of the display layer 20 so that the shielding rate of the touch layer 10 to the diffracted light is less than a set threshold.

[0048] Specifically, the touch layer 10 can make the display panel 100 touch-operable. The touch layer 10 can be a metal network or the like used to make the plane touchable, but a touch material that will block the display layer 20. The display layer 20 can be a variety of display modules, such as an OLED display module, an LCD display module, etc. In one embodiment, the display layer 20 can include a filter layer, and the filter layer includes a plurality of filters. The filters can be used to filter the light of the display layer 20 so that the light projected through the filter displays a specific color. Please refer to Table 1. When different display modules and touch layers 10 are matched, adding a two-dimensional grating 30 can improve the moiré and gray point phenomena. When the moiré score is greater than or equal to 80, it can be considered that the moiré is invisible to the naked eye.

[0049]

[0050] Table 1

[0051] Thus, a two-dimensional grating 30 is disposed between the touch layer 10 and the display layer 20 , and the two-dimensional grating 30 diffracts the light of the display layer 20 , so that the touch layer 10 does not block the diffracted light, thereby avoiding the generation of gray spots and moiré patterns.

[0052] See also Figure 2 and Figure 3 In some embodiments, the two-dimensional grating 30 includes a shading area 31 and a light-transmitting area 32. The two-dimensional grating 30 includes a plurality of protrusions 33 arranged in an array. The plurality of protrusions 33 form a shading area 31. A light-transmitting area 32 is formed between any two adjacent protrusions 33. The light-transmitting area 32 and the shading area 31 can diffract the light of the display layer 20.

[0053] Specifically, Figure 2 Resin represents a resin layer, and the touch layer 10 includes M1 and M2. The area with a light transmittance lower than a set transmittance is a light shielding area 31. The two-dimensional grating 30 forms a light shielding area 31 with protrusions 33 arranged in an array. The light transmittance between any two adjacent protrusions 33 is lower than the light transmittance of the protrusions 33. A light-transmitting area 32 is formed between any two adjacent protrusions 33. The difference between the light transmittance of the light-transmitting area 32 and the light transmittance of the light-shielding area 31 enables the two-dimensional grating 30 to diffract light.

[0054] In this way, the light of the display layer 20 is diffracted by the light-transmitting area 32 and the light-shielding area 31 of the two-dimensional grating 30, so that the two-dimensional grating 30 can redistribute the light intensity of the display layer 20, so that the shielding rate of the touch layer 10 on the light of the display layer 20 is lower than the set threshold.

[0055] See also Figure 3 In some embodiments, the touch layer 10 includes a metal grid.

[0056] Specifically, see Figures 4 to 6 The touch layer 10 may be a metal grid. When the metal grid is applied to a display module with dense pixel distribution, the metal grid is easy to block the RGB pixels, resulting in gray dots and moiré. In an embodiment of the present invention, a two-dimensional grating 30 is arranged between the display layer 20 and the metal grid. The light of the display layer 20 is diffracted by the two-dimensional grating 30 so that the blocking rate of the diffracted light by the metal grid is less than a set threshold, thereby avoiding the generation of gray dots and moiré. The grating constant D and the grid width W of the two-dimensional grating 30 can be determined according to the metal grid and the display layer 20, so that the two-dimensional grating 30 can diffract the light more effectively, thereby better reducing the blocking rate of the metal grid. The grating constant D of the two-dimensional grating 30 is the distance between one side of a protrusion 33 and the same side of an adjacent protrusion 33, and the grating constant W is the width of the light-transmitting area 32 formed between two protrusions 33, that is, the grating constant D is the sum of the width of a protrusion 33 and the grating constant W. The two-dimensional grating 30 can be determined based on the grating width W and the grating constant D.

[0057] In this way, the metal grid can make the touch layer 10 have better touch capability. In addition, the grating constant and grid width of the two-dimensional grating 30 are determined according to the metal grid and the display layer 20, so that the two-dimensional grating 30 can diffract the light of the display layer 20 more effectively, so that the two-dimensional grating 30 can better reduce the shielding rate of the metal grid on the light of the display layer 20.

[0058] In some embodiments, the display layer 20 includes a filter layer, and the blocking rate can be determined according to the degree of moiré of the visible image. The visible image can be obtained according to the filter matrix, the two-dimensional grating matrix and the metal grid matrix. The filter matrix is ​​determined according to the filter layer, the two-dimensional grating matrix is ​​determined according to the grating constant and the grid width, and the metal grid matrix is ​​determined according to the metal grid. When the moiré degree of the visible image is lower than the set degree, the two-dimensional grating 30 determined according to the grating constant and the grid width can make the blocking rate of the metal grid to the diffracted light less than the set threshold.

[0059] Specifically, a two-dimensional grating matrix can be determined according to the grating constant and the grid width, a visible image can be obtained according to the two-dimensional grating matrix, the filter matrix and the metal grid matrix, and the shielding rate of the touch layer 10 to the diffracted light can be judged according to the moiré degree of the visible image. When the moiré degree of the visible image is lower than the set degree, the shielding rate of the touch layer 10 to the diffracted light is lower than the set threshold. At this time, the two-dimensional grating 30 determined according to the grating constant and the grid width can effectively diffract the light projected onto the filter layer.

[0060] In this way, the shielding rate of the touch layer 10 can be determined according to the moiré pattern of the visible image. If the visible image is determined according to the two-dimensional grating matrix, the filter matrix and the metal grid matrix determined based on the grating constant and the grid width, when the moiré degree of the visible image is lower than the set degree, the two-dimensional grating 30 determined according to the grating constant and the grid width can effectively diffract the light passing through the filter layer, so that the shielding rate of the metal grid to the diffracted light is less than the set threshold value.

[0061] In certain embodiments, a visible image can be obtained based on a two-dimensional grating diffraction image and a metal grid matrix, and a two-dimensional grating diffraction image is obtained based on a filter matrix and a two-dimensional grating matrix.

[0062] Specifically, the two-dimensional grating diffraction image can be determined according to the first superposition matrix, which is obtained by superimposing the filter matrix and the two-dimensional grating matrix. The first superposition matrix can be subjected to a two-dimensional Fourier transform to obtain an image spectrum complex matrix, and the image spectrum complex matrix is ​​spectrally shifted to move the zero-frequency component to the center of the spectrum; the image spectrum complex matrix after the spectrum shift is modulo to obtain the image amplitude spectrum, and then the image amplitude spectrum is squared to obtain the light intensity distribution, and the two-dimensional grating diffraction image can be determined according to the light intensity distribution. The two-dimensional grating diffraction image and the metal grid matrix are superimposed to obtain a second superposition matrix, and the second superposition matrix is ​​subjected to a two-dimensional Fourier transform to obtain a visible image.

[0063] In this way, a visible image can be obtained by processing the two-dimensional grating matrix, the filter matrix and the metal grid matrix, and the moiré degree of the visible image can be determined.

[0064] See also Figure 7 In some embodiments, the two-dimensional grating 30 is used to diffract the light of the display layer 20 and obtain a point array diffraction image, which includes a plurality of light spots arranged in an array, and the occlusion rate of the touch layer on the light spots is less than a set threshold.

[0065] Specifically, the two-dimensional grating 30 can concentrate the light intensity to the non-zero-order diffraction point by adjusting the grating constant and the grating width, so that the light intensity of the non-zero-order diffraction point increases, and a dot array diffraction image with uniformly distributed light spots can be formed. The dot array diffraction image corresponds to the two-dimensional grating diffraction image determined according to the two-dimensional grating matrix and the filter matrix. The two-dimensional grating 30 can be equivalent to a matrix of multiple light spots, so that the complex amplitude of any point on the display panel 100 is equivalent to the superposition of the light intensity diffraction results of multiple light spots at that location, thereby redistributing the light intensity of the display layer 20, reducing the light shielding rate of the touch layer 10, and avoiding the generation of gray spots and moiré.

[0066] In this way, the light is diffracted by the two-dimensional grating 30 to form a dot array diffraction image with uniformly distributed light spots, thereby redistributing the light intensity of the display layer 20 to reduce the shielding of the touch layer 10 to avoid the generation of gray spots and moiré patterns.

[0067] See also Figure 2 In some embodiments, the two-dimensional grating 30 is a resin layer, and a grid pattern is provided on a surface of the resin layer facing away from the display layer 20, and the grid pattern includes a plurality of protrusions 33 arranged in an array.

[0068] Specifically, the resin layer can be a transparent resin layer so that light can pass through the resin layer. The resin layer is provided with a grid pattern on the side facing away from the display layer 20 and close to the touch layer 10. The grid pattern includes a plurality of protrusions 33 arranged in an array. The plurality of protrusions 33 form a shading area 31. A light-transmitting area 32 is formed between two adjacent protrusions 33. The thickness of the light-shading area 31 of the resin layer is greater than the thickness of the light-transmitting area 32, so that the transmittance of the light-shading area 31 is less than the transmittance of the light-transmitting area 32, so that the resin layer has a two-dimensional grid structure and can diffract light.

[0069] In this way, by providing a grid pattern on the resin layer, the resin layer can be made into a two-dimensional grid structure, and the plurality of protrusions 33 arranged in an array in the grid pattern can diffract the light of the display layer 20 .

[0070] See also Figure 2 In some embodiments, the touch layer 10 includes an insulating layer 11 , the insulating layer 11 is in direct contact with the two-dimensional grating 30 , and the shapes of the contact surfaces of the insulating layer 11 and the two-dimensional grating 30 match.

[0071] Specifically, the insulating layer 11 can be a third insulating layer OC2, which is arranged between the second metal layer M2 and the two-dimensional grating 30 (resin layer), and is in direct contact with the resin layer on the side of the third insulating layer OC2 facing away from the second metal layer M2, and the shape of the contact surface between the third insulating layer OC2 and the resin layer matches the grid pattern set on the resin layer. The touch layer also includes a first metal layer M1, a first insulating layer OC and a second insulating layer OC1, the first insulating layer is arranged on the first metal layer M1, the second insulating layer is arranged between the first metal layer M1 and the second metal layer M2, and the three insulating layers are connected to the two metal layers and the two-dimensional grating respectively. A black matrix BM (Black Matrix) is arranged in the peripheral area outside the display area, the black matrix is ​​arranged under the glass Glass, and the first insulating layer is arranged between the black matrix and the first metal layer M1.

[0072] In this way, the insulating layer is in direct contact with the two-dimensional grating, and the shapes of the insulating layer and the contact surface of the two-dimensional grating match, so that the two-dimensional grating and the touch layer are in close contact, so that the two-dimensional grating has a better diffraction effect on light.

[0073] An embodiment of the present invention provides a display device, which includes the display panel 100 of any one of the above embodiments and a housing, wherein the display panel 100 is disposed in the housing.

[0074] Thus, a two-dimensional grating 30 is disposed between the touch layer 10 and the display layer 20 , and the two-dimensional grating 30 diffracts the light of the display layer 20 , so that the touch layer 10 does not block the diffracted light, thereby avoiding the generation of gray spots and moiré patterns.

[0075] See also Figure 8 The embodiment of the present invention provides a method for manufacturing a display panel 100. The display panel 100 includes a touch layer 10, a display layer 20, and a two-dimensional grating 30. The two-dimensional grating 30 is arranged between the touch layer 10 and the display layer 20. The two-dimensional grating 30 is used to diffract the light of the display layer 20 so that the shielding rate of the touch layer 10 to the diffracted light is less than a set threshold. The manufacturing method includes:

[0076] 011: Plating an insulating layer on the touch layer 10;

[0077] 012: exposing the insulating layer to obtain a raised pattern;

[0078] 013: A resin layer is coated on the raised pattern, and the resin layer forms a two-dimensional grating 30.

[0079] Specifically, see Fig. 9In the related art, the conventional process of touch products is a 4-Mask solution, as shown in part (a) of the figure. The embodiment of the present invention increases the manufacturing process to a 5-Mask solution, as shown in part (b) of the figure. The raised pattern includes a raised high-resolution OC pattern, and the insulating layer includes a high-resolution light-transmitting insulating layer. A high-resolution insulating layer (Optical Coupler, OC) is plated on the metal grid, and the OC is exposed through an OC2 Mask (optical mask) to form a raised high-resolution OC pattern, and then a resin layer is coated on the OC to obtain a two-dimensional grating 30 composed of a resin layer, wherein the position of the resin layer corresponding to the raised high-resolution OC pattern is the grid pattern of the resin layer.

[0080] In this way, by plating an insulating layer on the touch layer 10 and exposing the insulating layer, a raised pattern can be formed on the insulating layer, and then a resin layer is coated on the insulating layer, so that the resin layer also has a grid pattern, and the resin layer constitutes a two-dimensional grid to diffract the light of the display layer 20.

[0081] See also Fig.10 The embodiment of the present invention provides a method for determining a two-dimensional grating 30, wherein the two-dimensional grating 30 is disposed between the touch layer 10 and the display layer 20, and the two-dimensional grating 30 is used to diffract the light of the display layer 20, so that the shielding rate of the touch layer 10 to the diffracted light is less than a set threshold, and the touch layer 10 includes a metal grid, and the determination method includes:

[0082] 021: Set the assumed grating constant and assumed grid width;

[0083] 022: Determine a two-dimensional grating matrix based on an assumed grating constant and an assumed grid width;

[0084] 023: obtaining an output image according to the two-dimensional grating matrix, the display layer matrix and the metal grid matrix, wherein the display layer matrix is ​​determined according to the display layer 20, and the metal grid matrix is ​​determined according to the metal grid;

[0085] 024: If the moiré level of the output image is greater than the set level, reset the assumed grating constant and assumed grid width;

[0086] 025: If the moiré level of the output image is less than the set level, the two-dimensional grating 30 is determined based on the assumed grating constant and the assumed grid width.

[0087] Specifically, see Fig.11The determination method of the embodiment of the present invention can be implemented by the determination device 200 of the embodiment of the present invention. The determination device 200 includes a first setting module 21, a first determination module 22, a second determination module 23, a second setting module 24, and a third determination module 25. Among them, step 021 can be implemented by the first setting module 21, step 022 can be implemented by the first determination module 22, step 023 can be implemented by the second determination module 23, step 024 can be implemented by the second setting module 24, and step 025 can be implemented by the third determination module 25. That is, the first setting module Block 21 can be used to set an assumed grating constant and an assumed grid width; the first determination module 22 can be used to determine a two-dimensional grating matrix based on the assumed grating constant and the assumed grid width; the second determination module 23 can be used to obtain an output image based on the two-dimensional grating matrix, the display layer matrix and the metal grid matrix; the second setting module 24 can be used to reset the assumed grating constant and the assumed grid width if the moiré degree of the output image is greater than the set degree; the third determination module 25 can be used to determine the two-dimensional grating 30 based on the assumed grating constant and the assumed grid width if the moiré degree of the output image is less than the set degree.

[0088] The two-dimensional grating matrix is ​​determined according to the set assumed grating constant and assumed grid width, and the output image can be obtained according to the two-dimensional grating matrix, the display layer matrix and the metal grid matrix. The output image can simulate the actual image displayed when the two-dimensional grating 30 determined by the assumed grating constant and the assumed grid width is set in the display layer 20 and the metal grid. When the moiré degree of the output image is greater than the set degree, it is determined that the moiré is too obvious and the current assumed grating constant and assumed grid width are not appropriate. Therefore, the assumed grating constant and the assumed grid width are reset, and steps 021 to 024 are repeated until the set assumed grating constant and the assumed grid width are appropriate. When the moiré degree of the output image is less than the set degree, it is determined that the moiré of the current output image is invisible to the naked eye. At this time, the two-dimensional grating 30 determined according to the assumed grating constant and the assumed grid width diffracts the light of the display layer 20 and concentrates it to a suitable position, thereby effectively reducing the shielding rate of the metal grid to the light of the display layer 20, and avoiding the generation of moiré.

[0089] In this way, the moiré degree of the output image determined by the two-dimensional grating matrix, the display layer matrix and the metal grid matrix can determine whether the assumed grating constant and the assumed grid width of the two-dimensional grating matrix are appropriate. If the moiré degree is less than the set degree, the assumed grating constant and the assumed grid width are appropriate; if the moiré degree is greater than the set degree, the assumed grating constant and the assumed grid width are inappropriate, and the assumed grating constant and the assumed grid width are reset.

[0090] See also Fig.12In some embodiments, step 023 (obtaining an output image according to the two-dimensional grating matrix, the display layer matrix and the metal grid matrix) includes:

[0091] 0231: Determine a first superposition matrix according to the two-dimensional grating matrix and the display layer matrix;

[0092] 0232: Obtain a two-dimensional grating diffraction image according to the first superposition matrix;

[0093] 0233: Determine a second superposition matrix according to the two-dimensional grating diffraction image and the metal grid matrix;

[0094] 0234: Perform a two-dimensional Fourier transform on the second superposition matrix to obtain an output image.

[0095] Specifically, see Fig.13 , step 0231 can be implemented by the first determining submodule 231 of the second determining module 23, step 0232 can be implemented by the second determining submodule 232 of the second determining module 23, step 0233 can be implemented by the third determining submodule 233 of the second determining module 23, and step 0234 can be implemented by the processing submodule 234 of the second determining module 23, that is, the first determining submodule 231 can be used to determine the first superposition matrix according to the two-dimensional grating matrix and the display layer matrix; the second determining submodule 232 can be used to obtain the two-dimensional grating diffraction image according to the first superposition matrix; the third determining submodule 233 can be used to determine the second superposition matrix according to the two-dimensional grating diffraction image and the metal grid matrix; the processing submodule 234 can be used to perform a two-dimensional Fourier transform on the second superposition matrix to obtain an output image.

[0096] Among them, a two-dimensional grating diffraction image can be obtained by a first superposition matrix determined according to the two-dimensional grating matrix and the display layer matrix, and a second superposition matrix can be obtained by superimposing the two-dimensional grating diffraction image and the metal grid matrix, and a two-dimensional Fourier transform (FFT2) is performed on the second superposition matrix to obtain an output image, and whether the assumed grating constant and the assumed grid width of the two-dimensional grating matrix are appropriate can be determined according to the moiré degree of the output image. In addition, the two-dimensional grating diffraction image corresponds to the point array diffraction image obtained by the two-dimensional grating 30 diffracting the light.

[0097] In this way, by performing a two-dimensional Fourier transform on the two-dimensional grating diffraction image and the second superposition matrix determined by the metal grid matrix, an output image can be obtained. According to the degree of moiré in the output image, it can be determined whether the assumed grating constant and assumed grid width of the two-dimensional grating matrix are appropriate.

[0098] See also Fig.14 In some embodiments, step 0232 obtains a two-dimensional grating diffraction image according to the first superposition matrix, including:

[0099] 02321: Perform a two-dimensional Fourier transform on the first superposition matrix to obtain an image spectrum complex matrix;

[0100] 02322: Spectral shift of the complex matrix of the image spectrum to move the zero-frequency component to the center of the spectrum;

[0101] 02323: Modulo the complex matrix of the image spectrum after spectrum shift to obtain the image amplitude spectrum;

[0102] 02324: Square the image amplitude spectrum to obtain the light intensity distribution;

[0103] 02325: Determine the two-dimensional grating diffraction pattern based on the light intensity distribution.

[0104] Specifically, see Fig.15 , step 02321 can be implemented by the first processing unit 2321 of the second determining submodule 232, step 02322 can be implemented by the second processing unit 2322 of the second determining submodule 232, step 02323 can be implemented by the third processing unit 2323 of the second determining submodule 232, step 02324 can be implemented by the fourth processing unit 2324 of the second determining submodule 232, and step 02325 can be implemented by the determining unit 2325 of the second determining submodule 232. That is, the first processing unit 2324 can be implemented by the fourth processing unit 2324 of the second determining submodule 232, and step 02326 can be implemented by the determining unit 2326 of the second determining submodule 232. The unit 2321 can be used to perform a two-dimensional Fourier transform on the first superposition matrix to obtain an image spectrum complex matrix; the second processing unit 2322 can be used to shift the spectrum of the image spectrum complex matrix to move the zero-frequency component to the center of the spectrum; the first processing unit 2323 can be used to take the modulus of the image spectrum complex matrix after the spectrum shift to obtain an image amplitude spectrum; the first processing unit 2324 can be used to perform a square operation on the image amplitude spectrum to obtain a light intensity distribution; the determination unit 2325 can be used to determine a two-dimensional grating diffraction image based on the light intensity distribution.

[0105] Among them, a two-dimensional Fourier transform (FFT2) is performed on the first superposition matrix to obtain an image spectrum complex matrix, and the image spectrum complex matrix is ​​spectrally shifted using the fftshift function to move the zero-frequency component to the center of the spectrum to make it consistent with the actual diffraction effect, and then the abs function is used to take the modulus of the image spectrum complex matrix after the spectrum shift to obtain the image amplitude spectrum, and then the image amplitude spectrum is squared to obtain the light intensity distribution, so that a two-dimensional grating diffraction image can be obtained, and the two-dimensional grating diffraction image corresponds to the point array diffraction image.

[0106] In this way, a two-dimensional grating diffraction image can be obtained by performing backward two-dimensional Fourier transform, spectrum shift, modulo and square operations on the first superposition matrix. An output image can be obtained based on the two-dimensional grating diffraction image and the metal grid matrix. Based on the degree of moiré in the output image, it can be determined whether the assumed grating constant and assumed grid width of the two-dimensional grating matrix are appropriate.

[0107] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0108] In addition, the term "connection" should be understood in a broad sense, for example, it can include fixed connection, detachable connection, or integral connection; it can include direct connection, indirect connection through an intermediate medium, and internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0109] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0110] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present invention belong.

[0111] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A display panel, It is characterized in that The display panel comprises: Touch layer and display layer; A two-dimensional grating is arranged between the touch layer and the display layer.

2. The display panel according to claim 1, It is characterized in that The two-dimensional grating includes a shading area and a light-transmitting area. The two-dimensional grating includes a plurality of protrusions arranged in an array. The plurality of protrusions form the shading area. The light-transmitting area is formed between any two adjacent protrusions. The light-transmitting area and the shading area can diffract the light of the display layer.

3. The display panel according to claim 1, It is characterized in that The touch control layer includes a metal grid.

4. The display panel according to claim 1, It is characterized in that The two-dimensional grating is used to diffract the light of the display layer and obtain a point array diffraction image, which includes a plurality of light spots arranged in an array, and the shielding rate of the touch layer on the light spots is less than a set threshold.

5. The display panel according to claim 1, It is characterized in that The two-dimensional grating is a resin layer, and a grid pattern is arranged on a side of the resin layer away from the display layer. The grid pattern includes a plurality of protrusions arranged in an array.

6. The display panel according to claim 5, It is characterized in that The touch control layer includes an insulating layer, the insulating layer is in direct contact with the two-dimensional grating, and the shape of the insulating layer and the contact surface of the two-dimensional grating match.

7. A display device, It is characterized in that The display device comprises the display panel according to any one of claims 1 to 6 and a housing, wherein the display panel is arranged in the housing.

8. A method for manufacturing a display panel, It is characterized in that The display panel includes a touch layer, a display layer and a two-dimensional grating, wherein the two-dimensional grating is arranged between the touch layer and the display layer, and the manufacturing method includes: Plating an insulating layer on the touch layer; exposing the insulating layer to obtain a convex pattern; A resin layer is coated on the convex mask pattern, and the resin layer constitutes the two-dimensional grating.

9. A method for determining a two-dimensional grating, It is characterized in that The two-dimensional grating is arranged between the touch layer and the display layer, the touch layer includes a metal grid, and the determination method includes: Set the assumed grating constant and assumed grid width; determining a two-dimensional grating matrix according to the assumed grating constant and the assumed grid width; Obtaining an output image according to the two-dimensional grating matrix, the display layer matrix and the metal grid matrix, wherein the display layer matrix is ​​determined according to the display layer, and the metal grid matrix is ​​determined according to the metal grid; If the moiré degree of the output image is greater than a set degree, resetting the assumed grating constant and the assumed grid width; If the moiré degree of the output image is less than a set degree, the two-dimensional grating is determined according to the assumed grating constant and the assumed grid width.

10. The determination method according to claim 9, It is characterized in that The step of obtaining an output image according to the two-dimensional grating matrix, the display layer matrix and the metal grid matrix comprises: Determine a first superposition matrix according to the two-dimensional grating matrix and the display layer matrix; Obtaining a two-dimensional grating diffraction image according to the first superposition matrix; Determine a second superposition matrix according to the two-dimensional grating diffraction image and the metal grid matrix; Perform a two-dimensional Fourier transform on the second superposition matrix to obtain the output image.

11. The determination method according to claim 10, It is characterized in that The step of obtaining a two-dimensional grating diffraction image according to the first superposition matrix includes: Performing a two-dimensional Fourier transform on the first superposition matrix to obtain an image spectrum complex matrix; Spectrally shifting the complex matrix of the image spectrum to move the zero-frequency component to the center of the spectrum; Taking the modulus of the complex matrix of the image spectrum after the spectrum shift to obtain the image amplitude spectrum; Performing a square operation on the image amplitude spectrum to obtain a light intensity distribution; The two-dimensional grating diffraction image is determined according to the light intensity distribution.

12. A device for determining a two-dimensional grating, It is characterized in that The two-dimensional grating is arranged between the touch layer and the display layer, the touch layer comprises a metal grid, and the determining device comprises: A first setting module, the first setting module is used to set an assumed grating constant and an assumed grid width; a first determining module, the first determining module being used to determine a two-dimensional grating matrix according to the assumed grating constant and the assumed grid width; a second determining module, the second determining module being used to obtain an output image according to the two-dimensional grating matrix, the display layer matrix and the metal grid matrix, the display layer matrix being determined according to the display layer, and the metal grid matrix being determined according to the metal grid; A second setting module, if the moiré degree of the output image is greater than a set degree, the second setting module is used to reset the assumed grating constant and the assumed grid width; The third determination module is used to determine the two-dimensional grating according to the assumed grating constant and the assumed grid width if the moiré degree of the output image is less than a set degree.

Images