Display panel, display device and dot matrix recognition system

Abstract

The invention discloses a display panel, a display device and a dot matrix recognition system. The display panel comprises a substrate, a pixel layer arranged on one side of the substrate and a positioning layer arranged on the side, away from the substrate, of the pixel layer. The positioning layer comprises a diffuse reflection layer, a dot matrix layer and a refraction layer which are arranged in a laminated mode, the dot matrix layer comprises a plurality of light absorption structures arranged in an array mode, and the light absorption structures are arranged in a non-pixel opening area of the pixel layer in the orthographic projection direction; the light absorption structure is used for absorbing light with specific wavelength; bending structures bending towards the substrate are arranged at the positions, corresponding to the light absorption structures of the dot matrix layer, of the refraction layer, and the bending structures are used for transmitting incident light to the diffuse reflection layer connected with the light absorption structures. According to the display panel, the incident light of the display panel is transmitted to the diffuse reflection layer connected with the light absorption structure through the bending structure of the refraction layer, so that the number of the diffuse reflection light is increased, the positioning effect of the light absorption structure is enhanced, and the recognition rate of the light absorption structure is increased.

Description

Technical Field

[0001] The present disclosure generally relates to the technical field of display devices, and in particular to a display panel, a display device, and a dot matrix recognition system. Background Art

[0002] As a stylus pen that uses light as a communication medium, the optical pen can emit light signals to the digital dot matrix set on a specific paper through its own infrared light source, and use its own infrared camera to receive the reflection signal of the light signal from the digital dot matrix, thereby realizing the tracking and motion capture of the optical pen tip position based on the recognition result of the reflection signal.

[0003] However, when the optical pen is applied to an existing display panel, due to the mirror reflection effect of the display panel surface, the infrared camera of the optical pen cannot effectively recognize the reflection signal from the digital dot matrix inside the display panel, which results in poor recognition effect of the digital dot matrix inside the display panel.

[0004] Therefore, the existing display panel still has the problem of poor recognition effect on digital dot matrix. Summary of the invention

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a display panel, a display device and a dot matrix recognition system. The display panel provided in the present application can transmit the incident light of the display panel to the diffuse reflection layer connected to the light absorption structure through the bending structure of the refractive layer, so that the amount of diffusely reflected light is increased, thereby enhancing the positioning effect for the light absorption structure and improving the recognition rate of the light absorption structure.

[0006] According to a first aspect of the present application, there is provided a display panel, comprising a substrate, a pixel layer disposed on one side of the substrate, and a positioning layer disposed on a side of the pixel layer away from the substrate; The positioning layer includes a diffuse reflection layer, a dot matrix layer and a refractive layer which are stacked, the diffuse reflection layer is arranged close to the substrate, the dot matrix layer is arranged on a side of the diffuse reflection layer away from the substrate, and the refractive layer is arranged on a side of the dot matrix layer away from the substrate; the dot matrix layer includes a plurality of light absorption structures arranged in an array, and the light absorption structures are arranged in a non-pixel opening area of ​​the pixel layer in a direction perpendicular to the substrate; the light absorption structures are used to absorb light of a specific wavelength; The refractive layer has a bending structure bent toward the substrate at a position corresponding to each light absorbing structure of the dot matrix layer, and the bending structure is used to propagate incident light to the diffuse reflection layer connected to the light absorbing structure.

[0007] In addition, the display panel of the present application may also have the following additional technical features: In one possible example, the bending structure has a side wall that has an angle with a direction perpendicular to the substrate, and the angle between the side wall and the direction perpendicular to the substrate satisfies the range requirement of the side wall incident light; the range requirement includes that the range of the side wall incident light propagating in the diffuse reflection layer starts from the edge of the light absorption structure and does not exceed the range of the side wall incident light propagating in the diffuse reflection layer of the adjacent light absorption structure.

[0008] In a possible example, the bending depth of the bending structure is negatively correlated with the angle between the side wall and the vertical direction of the substrate.

[0009] In a possible example, the bending structure has an opening and a bottom, and an orthographic projection pattern of the bottom is contained in an orthographic projection pattern of the opening.

[0010] In a possible example, along a direction parallel to the substrate, a size of the opening is smaller than a size of a corresponding light absorption structure.

[0011] In a possible example, a light-transmitting structure is disposed on a side of the light-absorbing structure close to the substrate, and the light-transmitting structure is used to absorb interfering light, where the interfering light is light other than light of a specific wavelength.

[0012] In a possible example, along a direction parallel to the substrate, a projection pattern of the bending structure is a triangle or a trapezoid.

[0013] In a possible example, the orthographic projection pattern of the light absorption structure includes at least a closed pattern and / or a non-closed pattern; the closed pattern surrounds at least one pixel unit, and the non-closed pattern is arranged to be spaced apart from at least one pixel unit.

[0014] According to a second aspect of the present application, a display device is provided, comprising the display panel of the first aspect.

[0015] According to a third aspect of the present application, there is provided a dot matrix recognition system, comprising an optical pointing object and the display device of the second aspect; The optical pointer is used to emit incident light of a specific wavelength to a display panel of the display device; The display panel is used to absorb part of the incident light of a specific wavelength through the light absorption structure, and transmit part of the light of the specific wavelength to the diffuse reflection layer of the display panel through the bending structure; The optical pointer is also used to receive reflected light of a portion of light of a specific wavelength from the diffuse reflection layer of the display panel, identify the light absorption structure based on the received reflected light, and indicate the identified light absorption structure to the display device; The display device is used to light up the pixel units corresponding to the identified light absorption structure, wherein the lighted pixel units are used to display the dot matrix drawn by the optical pointing object on the display panel.

[0016] In addition, the dot matrix recognition system of the present application may also have the following additional technical features: In a possible example, the optical pointing object includes a light source and a camera assembly; The optical pointer is specifically used to use a light source to emit incident light of a specific wavelength to the display panel, and use a camera component to receive reflected light of part of the specific wavelength from the diffuse reflection layer of the display panel; wherein the size of the light absorption structure of the display panel is negatively correlated with the resolution of the camera component.

[0017] In a possible example, the spacing distance between adjacent light absorption structures is negatively correlated with the accuracy of the dot matrix recognition result.

[0018] The display panel, display device and dot matrix recognition system provided in the embodiments of the present application can utilize the bending structures on the refractive layer arranged corresponding to each light absorption structure to refract or reflect the incident light of the display panel, so as to propagate the incident light to the diffuse reflection layer connected to the light absorption structure, thereby enhancing the positioning effect of the light absorption structure and improving the recognition rate of the light absorption structure by increasing the diffuse reflection light around the light absorption structure.

[0019] 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

[0020] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 is one of the cross-sectional schematic diagrams of the display panel 10 provided in the embodiment of the present application; Figure 2 is a second cross-sectional schematic diagram of the display panel 10 provided in an embodiment of the present application; Figure 3 This is one of the schematic diagrams of the arrangement of the light absorption structure 10321 and the pixel unit provided in the embodiment of the present application; Figure 4 This is the second schematic diagram of the arrangement of the light absorption structure 10321 and the pixel unit provided in the embodiment of the present application; Figure 5 This is the third schematic diagram of the arrangement of the light absorption structure 10321 and the pixel unit provided in the embodiment of the present application; Figure 6 is one of the schematic diagrams of the refractive layer 1033 provided in the embodiment of the present application; Figure 7 is a schematic diagram of the corresponding bending depth of the bending structure 10331 provided in the embodiment of the present application and the included angle between the side wall 601 and the vertical direction of the substrate 101; Figure 8 is a schematic diagram of the propagation of an incident light beam on the display panel 10 provided in an embodiment of the present application; Fig. 9 is a schematic diagram of propagation of another type of incident light on the display panel 10 provided in an embodiment of the present application; Fig.10 This is the third cross-sectional schematic diagram of the display panel 10 provided in the embodiment of the present application; Fig.11 This is a fourth cross-sectional schematic diagram of the display panel 10 provided in an embodiment of the present application; Fig.12 is a fifth cross-sectional schematic diagram of the display panel 10 provided in the embodiment of the present application; Fig.13 It is a flowchart of a dot matrix recognition method provided in an embodiment of the present application; Fig.14 is a schematic diagram of the structure of a computer device provided in an embodiment of the present application; In the above picture: 10-display panel; 101-substrate; 102-pixel layer; 103-positioning layer; 1031-diffuse reflection layer; 1032-lattice layer; 1033-refractive layer; 10321-light absorption structure; 1021-flat layer; 1022-pixel definition layer; 1023-pixel electrode layer; 201-pixel electrode; 10221-pixel opening area; 301-pixel unit; 10331-bending structure; 601-side wall; 104-encapsulation layer; 105-touch layer; 106-cover layer; 1041-first inorganic layer; 1042-organic layer; 1043-second inorganic layer; 1001-touch metal wire; 1061-polarizer; 1062-cover; 1101-light-transmitting structure. DETAILED DESCRIPTION

[0021] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0022] It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. In addition, the term "and / or" herein is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The terms "first" and "second" in the description and claims of the embodiments of the present application are used to distinguish different objects, rather than to describe a specific order of objects.

[0023] As a stylus pen that uses light as a communication medium, the optical pen can emit light signals to the digital dot matrix set on a specific paper through its own infrared light source, and use its own infrared camera to receive the reflection signal of the light signal from the digital dot matrix, thereby realizing the tracking and motion capture of the optical pen tip position based on the recognition result of the reflection signal.

[0024] However, when the optical pen is applied to the existing Organic Light-Emitting Diode (OLED) display screen, compared with the existing electromagnetic pen, although it can avoid the influence of capacitance that makes it impossible to apply larger screens, due to the mirror reflection of the display screen panel, the infrared camera of the optical pen cannot effectively identify the reflected signal from the digital dot matrix inside the display panel, which results in poor recognition of the digital dot matrix inside the display panel. Even after setting a diffuse reflection film layer in the display panel, the problem of difficulty in recognizing the digital dot matrix still occurs.

[0025] Therefore, the existing display panel still has the problem of poor recognition effect on digital dot matrix.

[0026] Based on this, the present application provides a display panel that can transmit the incident light emitted to the light absorption structure inside the display panel to the diffuse reflection layer connected to the light absorption structure through the bending structure of the refractive layer, so as to increase the amount of diffusely reflected light, thereby enhancing the positioning effect for the light absorption structure and improving the recognition rate of the light absorption structure.

[0027] Figure 1 is one of the cross-sectional schematic diagrams of the display panel 10 provided in the embodiment of the present application, such as Figure 1 As shown, the display panel 10 includes a substrate 101 , a pixel layer 102 disposed on one side of the substrate 101 , and a positioning layer 103 disposed on a side of the pixel layer 102 away from the substrate 101 .

[0028] Specifically, the positioning layer 103 includes a diffuse reflection layer 1031, a dot matrix layer 1032 and a refractive layer 1033 which are stacked. The diffuse reflection layer 1031 is arranged close to the substrate 101, the dot matrix layer 1032 is arranged on the side of the diffuse reflection layer 1031 away from the substrate 101, and the refractive layer 1033 is arranged on the side of the dot matrix layer 1032 away from the substrate 101; the dot matrix layer 1032 includes a plurality of light absorption structures 10321 arranged in an array, and the light absorption structure 10321 is arranged in a non-pixel opening area of ​​the pixel layer 102 along a direction perpendicular to the substrate 10; the light absorption structure 10321 is used to absorb light of a specific wavelength.

[0029] For example, the substrate 101 , as a base material of the display panel 10 , may have the characteristics of low expansion coefficient and high surface flatness, and its manufacturing material may be, for example, alkali-free glass.

[0030] For example, Figure 2 is a second cross-sectional schematic diagram of the display panel 10 provided in the embodiment of the present application, such as Figure 2 As shown, the pixel layer 102, as a film layer in the display panel 10 that can convert electrical signals into visible images, may include a stacked flat layer 1021, a pixel definition layer 1022, and a pixel electrode layer 1023; wherein the flat layer 1021 is arranged close to the substrate 101, the pixel definition layer 1022 is arranged on a side of the flat layer 1021 away from the substrate 101, and the pixel electrode layer 1023 is arranged on a side of the pixel definition layer 1022 away from the substrate 101.

[0031] For example, in order to achieve the planarization of the display panel 10 and protect the display panel 10 , the planarization layer 1021 may have high light transmittance and good heat resistance, and its manufacturing material may be, for example, organic matter such as resin.

[0032] Exemplarily, the pixel definition layer 1022 (PDL) can be used to define the shape and size of each pixel in the display panel 10. Specifically, the pixel definition layer 1022 can guide light onto the light-emitting material through a photolithography process to ensure that each pixel has a clear boundary and a correct shape.

[0033] For example, the manufacturing material of the pixel definition layer 1022 can be an organic polymer material, such as polyimide (PI for short); or an inorganic material, such as silicon-containing compounds SiO or SiON.

[0034] Exemplary, reference Figure 2 A pixel electrode 201 may be disposed on a side of the planar layer 1021 away from the substrate 101 , and the pixel electrode 201 may penetrate the planar layer 1021 to be connected to the drain electrode.

[0035] Specifically, the pixel electrode 201 may be an anode electrode with good transparency and conductivity, and its manufacturing material may be, for example, indium tin oxide (ITO) and silver. For example, the structure of the pixel electrode 201 may be ITO / Ag / ITO, and its thickness may be 15nm or 20nm.

[0036] Exemplarily, the pixel definition layer 1022 may include a plurality of pixel opening regions 10221 , and each pixel opening region is correspondingly provided with a pixel electrode 201 .

[0037] Illustratively, a pixel light emitting layer may be provided on a side of the pixel electrode 201 exposed in each pixel opening region 10221 close to the pixel definition layer 1022 .

[0038] Specifically, the pixel light-emitting layer may include at least one of a hole injection layer (HIL), a hole transporting layer (HTL), an electron transporting layer (ETL), and an electron injection layer (EIL).

[0039] Exemplarily, a common electrode may be laid on a side of the pixel light emitting layer away from the substrate 101 to form a pixel electrode layer 1023 , and the pixel electrode layer 1023 is, for example, a pixel cathode layer.

[0040] It should be noted that the pixel electrode 201 , the pixel light emitting layer and the pixel electrode layer 1023 may constitute a light emitting element of the display panel 10 .

[0041] Exemplarily, the diffuse reflection layer 1031 is a film layer that can evenly scatter incident light in all directions, and can be a diffuse reflection layer for a near-infrared short-wave band, wherein the near-infrared short-wave band ranges from 780 nm to 1100 nm.

[0042] For example, the diffuse reflection layer 1031 is Lambertian scattering, and its scattering rate can be 2% to 10%. Exemplarily, a plurality of light absorption structures 10321 arranged in an array may be disposed on a side of the diffuse reflection layer 1031 away from the substrate 101 to form a dot matrix layer 1032 .

[0043] Specifically, the dot matrix layer 1032 may be an infrared absorption type digital dot matrix, that is, the light absorption structure 10321 is specifically an infrared light absorption structure.

[0044] Exemplarily, along a direction perpendicular to the substrate 10 , the light absorption structure 10321 is disposed in a non-pixel opening region of the pixel layer 102 , wherein the non-pixel opening region of the pixel layer 102 corresponds to a region between adjacent pixel opening regions in the pixel definition layer 1022 .

[0045] It should be noted that the light absorption structure 10321 is arranged in the non-pixel opening area of ​​the pixel layer 102 to avoid the light absorption structure 10321 from easily blocking the normal light emission of the pixel unit when the light absorption structure 10321 overlaps with the pixel unit located in the pixel opening area.

[0046] Exemplarily, the orthographic projection pattern of the light absorption structure 10321 includes at least a closed pattern and / or a non-closed pattern; wherein the closed pattern surrounds at least one pixel unit, and the non-closed pattern is arranged to separate at least one pixel unit.

[0047] Specifically, one pixel unit includes one red pixel (ie, R pixel), one green pixel (ie, G pixel), and one blue pixel (ie, B pixel).

[0048] For example, Figure 3 is one of the schematic diagrams of the arrangement of the light absorption structure 10321 and the pixel unit provided in the embodiment of the present application, such as Figure 3 As shown, the orthographic projection pattern of the light absorption structure 10321 is a non-closed pattern in the form of dots. Figure 3 In the vertical direction of the arrangement diagram shown, each light absorption structure 10321 is disposed corresponding to each pixel unit 301 , and each light absorption structure 10321 is used to space two adjacent pixel units 301 .

[0049] Optionally, Figure 4 This is the second schematic diagram of the arrangement of the light absorption structure 10321 and the pixel unit provided in the embodiment of the present application. Figure 4 As shown, the orthographic projection pattern of the light absorption structure 10321 is a non-closed pattern in the form of strips. Figure 4 In the horizontal direction of the arrangement schematic diagram shown, the length of each light absorption structure 10321 in the vertical direction is the same as the length of two pixel units 301 in the vertical direction (that is, each light absorption structure 10321 is arranged corresponding to two pixel units 301), and 3×2 pixel units 301 are arranged between two adjacent light absorption structures 10321.

[0050] Optionally, Figure 5 This is the third schematic diagram of the arrangement of the light absorption structure 10321 and the pixel unit provided in the embodiment of the present application, such as Figure 5 As shown, the orthographic projection pattern of the light absorption structure 10321 is a closed frame-shaped pattern. Each light absorption structure 10321 is used to surround a pixel unit 301. Figure 5 In the horizontal and vertical directions of the arrangement schematic diagram shown, adjacent light absorption structures 10321 are also used to space two adjacent pixel units 301 .

[0051] Correspondingly, the length and width of the light absorption structure 10321 in the direction parallel to the substrate can be the same as the size of one pixel unit or two pixel units, and the thickness in the direction perpendicular to the substrate can be 2μm~6μm. It should be noted that the length, width and thickness of the light absorption structure 10321 are not limited in this application.

[0052] For example, Figure 1 As shown, the refractive layer 1033 has a bending structure 10331 bent toward the substrate 101 at a position corresponding to each light absorbing structure 10321 of the dot matrix layer 1032 . The bending structure 10331 is used to propagate incident light to the diffuse reflection layer 1031 connected to the light absorbing structure 10321 .

[0053] Specifically, the material of the refractive layer 1033 may be polyimide or the like, and its refractive index may be 1.9-2.2.

[0054] Exemplarily, a low refractive layer may be disposed on a side of the diffuse reflection layer 1031 close to the substrate 101 , and the refractive index of the film layer may be, for example, 1.5 to 1.8.

[0055] In the embodiment of the present application, by using the two layers of film with different refractive indices, namely the refractive layer 1033 and the diffuse reflection layer 1031, which are a low refractive layer arranged on the side close to the substrate 101, the incident light that is easily emitted to the light absorption structure 10321 in the prior art can be offset to the diffuse reflection layer 1031 connected to the light absorption structure 10321, thereby increasing the diffuse reflection light and improving the positioning accuracy of the light absorption structure 10321.

[0056] The display panel 10 provided in the embodiment of the present application can utilize the bending structures 10331 on the refractive layer 1033 that are arranged corresponding to each light absorption structure 10321 to refract or reflect the incident light of the display panel 10, so as to propagate the incident light to the diffuse reflection layer 1031 connected to the light absorption structure 10321, thereby enhancing the positioning effect of the light absorption structure 10321 and improving the recognition rate of the light absorption structure 10321 in the display panel 10.

[0057] In another embodiment of the present application, a specific design method of the bending structure 10331 is also provided.

[0058] In a possible implementation, the bending structure 10331 has a side wall that forms an angle with a vertical direction of the substrate 101 .

[0059] In the embodiment of the present application, the sidewalls that are at an angle to the substrate 101 in a vertical direction can cause the incident light of the display panel 10 to be refracted or reflected on the sidewalls, and thus refracted or reflected to the diffuse reflection layer 1031 .

[0060] Exemplarily, the angle between the side wall of the bending structure 10331 and the perpendicular direction of the substrate 101 satisfies the range requirement of the side wall incident light, which range requirement includes that the range of the side wall incident light propagating in the diffuse reflection layer 1031 starts from the edge of the light absorption structure 10321 and does not exceed the range of the side wall incident light propagating in the diffuse reflection layer 1031 of the adjacent light absorption structure 10321.

[0061] Specifically, the case where the incident light from the side wall 601 propagates on the diffuse reflection layer 1031 includes the case where the incident light from the side wall 601 is refracted on the diffuse reflection layer 1031 or reflected on the diffuse reflection layer 1031. The incident light from the side wall 601 may be the incident light of the display panel 10.

[0062] For example, Figure 6 is one of the schematic diagrams of the refractive layer 1033 provided in the embodiment of the present application, such as Figure 6 As shown, there is an angle 1 between the side wall 601 of each bending structure 10331 of the refractive layer 1033 and the vertical direction of the substrate 101. Corresponding to the different shapes and materials of the bending structures 10331, the angle 1 needs to meet the range requirements of the incident light on the side wall 601. It can also be understood that the slope of the side wall 601 needs to meet the range requirements of the incident light on the side wall 601.

[0063] It should be noted that, in order to improve the recognition accuracy of the light absorption structure 10321, the present application requires that the light transmitted from the side wall 601 to the diffuse reflection layer 1031 be concentrated as much as possible around the light absorption structure 10321. Based on this, the range requirement of the incident light on the side wall 601 can be: the range of light transmitted to the diffuse reflection layer 1031 starts from the edge of the light absorption structure 10321 and does not exceed the range of the incident light on the side wall 601 of the adjacent light absorption structure 10321 that is transmitted in the diffuse reflection layer 1031.

[0064] For example, along Figure 6 The arrangement direction of the bending structure 10331 shown (i.e., the horizontal direction) can determine the midpoint position of two adjacent light absorption structures 10321 on the diffuse reflection layer 1031 as the boundary of the side range of the incident light from the side wall 601 propagating to the diffuse reflection layer 1031, that is, the range of light propagating to the diffuse reflection layer 1031 starts from the edge of a certain light absorption structure 10321 and does not exceed the midpoint position between the light absorption structure 10321 and the adjacent light absorption structure 10321.

[0065] Exemplarily, the bending depth of the bending structure 10331 is negatively correlated with the included angle between the side wall 601 and the vertical direction of the substrate 101. The bending depth of the bending structure 10331 may be 2 μm to 10 μm.

[0066] Correspondingly, refer to Figure 6, the bending depth of the bending structure 10331 is negatively correlated with the angle 1.

[0067] For example, Figure 7 1 is a schematic diagram showing the corresponding relationship between the bending depth of the bending structure 10331 provided in the embodiment of the present application and the included angle between the side wall 601 and the vertical direction of the substrate 101. Figure 7 As shown, when the bottom length of the bending structure 10331 close to the substrate 101 remains unchanged, when the bending depth of the bending structure 10331 decreases from 1 to 1', the included angle between the side wall 601 and the substrate 101 in the vertical direction increases from 2 to 2'.

[0068] In this case, refer to Figure 7 When the incident light on the side wall 601 is a vertical light, the light incident on the side wall 601 propagates to the diffuse reflection layer 1031 from a position close to the light absorption structure 10321 corresponding to the bending structure 10331 to a position far away from the light absorption structure 10321 (that is, the range of the light incident on the side wall 601 propagating in the diffuse reflection layer 1031 becomes larger).

[0069] That is to say, in order to make the light incident on the side wall 601 and propagating in the diffuse reflection layer 1031 as close to the light absorption structure 10321 as possible, the angle between the side wall 601 and the substrate 101 in the vertical direction can be appropriately reduced, that is, the slope of the side wall 601 can be appropriately reduced.

[0070] Correspondingly, when the length of the bottom side of the bending structure 10331 close to the substrate 101 remains unchanged, the slope of the side wall 601 can be reduced by increasing the bending depth of the bending structure 10331; optionally, the slope of the side wall 601 can be reduced by adjusting the length of the bottom side of the bending structure 10331 close to the substrate 101 and the opening length of the bending structure 10331 away from the substrate 101.

[0071] In a possible implementation, the bending structure 10331 has an opening and a bottom, and the orthographic projection pattern of the bottom is contained in the orthographic projection pattern of the opening.

[0072] Exemplarily, along a direction parallel to the substrate 101 , the size of the opening of the bending structure 10331 is smaller than the size of the corresponding light absorbing structure 10321 .

[0073] In the embodiment of the present application, by setting the opening size of the bending structure 10331 to be smaller than the size of the light absorbing structure 10321 , it can be ensured that the incident light that should be transmitted to the light absorbing structure 10321 can be normally transmitted to the light absorbing structure 10321 .

[0074] Exemplarily, along a direction parallel to the substrate 101 , a projection pattern of the bending structure 10331 is a triangle or a trapezoid.

[0075] Specifically, refer to Figure 6 When the projection pattern of the bending structure 10331 is a trapezoid, the bending structure 10331 can appear as a trapezoidal groove.

[0076] Optionally, when the projection pattern of the bending structure 10331 is a triangle, the bending structure 10331 may appear as a conical groove.

[0077] For example, Figure 8 is a schematic diagram of the propagation of an incident light beam on the display panel 10 provided in an embodiment of the present application, such as Figure 8 As shown, the bending structure 10331 is a trapezoidal groove. When the incident angle of the incident light is 90°, the incident light on the side wall 601 can be refracted at the bending structure 10331 to increase the number of light rays reaching the diffuse reflection layer 1031 through light refraction.

[0078] Specifically, when the thickness of the light absorption structure 10321 in the vertical direction is 2 μm, the length and width in the horizontal direction are both 14 μm, the refractive index of the refractive layer 1033 is 2.0, and the refractive index of the low refractive layer on the side of the diffuse reflection layer 1031 close to the substrate 101 is 1.8, the angle between the trapezoidal groove and the horizontal direction is 116°, and the refraction angle of the incident light on the side wall 601 in the bending structure 10331 is 55.08°.

[0079] It should be noted that in Figure 8 In the case of vertical incident light as shown, the greater the distance between the bottom of the bending structure 10331 and the light absorbing structure 10321 in the vertical direction, the longer the optical path of the light. At this time, in order to ensure that the refracted light of the incident light on the side wall 601 in the bending structure 10331 is close to the light absorbing structure 10321 corresponding to the bending structure 10331, the refractive index of the refraction layer 1033 can be adjusted to increase the refraction angle of the incident light on the side wall 601 in the bending structure 10331.

[0080] Exemplarily, the distance between the bottom of the bending structure 10331 and the light absorbing structure 10321 in the vertical direction may be 1 μm to 6 μm.

[0081] For example, Fig. 9 is a schematic diagram of the propagation of another incident light beam on the display panel 10 provided in an embodiment of the present application, such as Fig. 9 As shown, the bending structure 10331 is a trapezoidal groove. When the incident angle of the incident light is 45°, the incident light on the side wall 601 can produce a total reflection effect at the bending structure 10331 to increase the number of light rays reaching the diffuse reflection layer 1031 through light reflection.

[0082] Specifically, when the thickness of the light absorption structure 10321 in the vertical direction is 2 μm, the length and width in the horizontal direction are both 14 μm, the refractive index of the refractive layer 1033 is 2.0, and the refractive index of the low refractive layer on the side of the diffuse reflection layer 1031 close to the substrate 101 is 1.8, the angle between the trapezoidal groove and the horizontal direction is 116°, the refraction angle of the incident light from the refractive layer 1033 to the side wall 601 is 39.51°, and the critical angle of total reflection of the incident light on the side wall 601 at the bending structure 10331 is 64.15°.

[0083] In the embodiment of the present application, although the bending structure 10331 totally reflects the incident light to the right side of the light absorption structure 10321 (i.e., the light on the left side of the light absorption structure 10321 is translated), the amount of circumferentially diffusely reflected light by the light absorption structure 10321 is still increased compared to the existing display panel 10, thereby enhancing the positioning effect of the light absorption structure.

[0084] In another embodiment of the present application, other film layer distributions of the display panel 20 are also provided.

[0085] In one possible implementation, Fig.10 3 is a cross-sectional schematic diagram of the display panel 10 provided in the embodiment of the present application. Fig.10 As shown, a packaging layer 104 and a touch layer 105 are disposed on a side of the positioning layer 103 close to the substrate 101 , and a cover layer 106 is disposed on a side of the positioning layer 103 away from the substrate 101 .

[0086] Exemplary, reference Fig.10 The encapsulation layer 104 includes a first inorganic layer 1041, an organic layer 1042 and a second inorganic layer 1043 which are stacked, wherein the first inorganic layer 1041 is arranged close to the substrate 101, the organic layer 1042 is arranged on a side of the first inorganic layer 1041 away from the substrate 101, and the second inorganic layer 1043 is arranged on a side of the organic layer 1042 away from the substrate 101.

[0087] Exemplarily, the encapsulation layer 104 can seal the light emitting element to prevent moisture and other substances from flowing into the light emitting element from the outside. Specifically, the encapsulation layer 104 can cover the entire pixel display area.

[0088] For example, the touch layer 105 may be disposed on a side of the second inorganic layer 1043 away from the substrate 101. Fig.10 A touch metal line 1001 may be disposed on a side of the touch layer 105 away from the substrate 101 to ensure a normal touch function of the display panel 10 .

[0089] Exemplary, reference Fig.10The cover layer 106 includes a stacked polarizer 1061 and a cover 1062, wherein the polarizer 1061 and the cover 1062 are bonded by optical adhesive. Specifically, the polarizer 1061 can be used to reduce the light reflectivity of the external environment. Based on this, the display panel 10 can be called a POL display panel.

[0090] Exemplarily, the cover plate 1062 serves as a physical protective film layer of the display panel, and specifically may be a CPI film layer made of transparent polyimide, a UTG film layer made of ultra-thin flexible glass, or a CG film layer made of glass.

[0091] Optionally, Fig.11 is a fourth cross-sectional schematic diagram of the display panel 10 provided in the embodiment of the present application, such as Fig.11 As shown, the cover layer 106 is bonded to the side of the refractive layer 1033 away from the substrate 101 by optical adhesive, that is, Fig.10 The polarizer 1061 shown is replaced with a structure without a polarizer (Color filter On Encapsulation, referred to as COE structure) to reduce the light reflectivity of the external environment. Based on this, the display panel 10 can be called a COE display panel.

[0092] In a possible implementation, a light-transmitting structure is provided on one side of the light-absorbing structure 10321 close to the substrate 101 , and the light-transmitting structure is used to absorb interfering light, wherein the interfering light is light other than light of a specific wavelength.

[0093] For example, Fig.12 is a fifth cross-sectional schematic diagram of a display panel 10 provided in an embodiment of the present application, such as Fig.12 As shown, the bending structure 10331 is a conical groove, and each light absorbing structure 10321 is also provided with a corresponding light-transmitting structure 1101 on a side close to the substrate 101, that is, the light absorbing structures 10321 arranged in an array and the light-transmitting structures 1101 together constitute the dot matrix layer 1032. For example, when the light absorbing structure 10321 is an infrared light absorbing structure, the light-transmitting structure 1101 can be an infrared high-transmittance black matrix to absorb interfering light through the infrared high-transmittance black matrix.

[0094] Specifically, the infrared high-transmittance black matrix can block light of other wavelengths and ambient light while allowing infrared light of a specific wavelength to pass through. Based on this, the recognition accuracy of the infrared light absorption structure can be further improved through the corresponding setting of the infrared light absorption structure and the infrared high-transmittance black matrix.

[0095] In another embodiment of the present application, a display device 20 is further provided. The display device 20 may include the display panel 10 in the above embodiment.

[0096] In a possible implementation, the display device 20 may be used to output image information. For example, the display device 20 may display text images by controlling semiconductor light emitting diodes.

[0097] In another embodiment of the present application, a dot matrix recognition system 30 is provided. Exemplarily, the dot matrix recognition system 30 includes an optical pointer 31 and the display device 20 described in the above embodiment.

[0098] Specifically, the optical pointer 31 is used to emit incident light of a specific wavelength to the display panel 10 of the display device 20; the display panel 10 is used to absorb part of the incident light of a specific wavelength through the light absorption structure 10321, and transmit part of the light of a specific wavelength to the diffuse reflection layer 1031 of the display panel 10 through the bending structure 10331; the optical pointer 31 is also used to receive reflected light of part of the light of a specific wavelength by the diffuse reflection layer 1031 of the display panel 10, identify the light absorption structure 10321 based on the received reflected light, and indicate the identified light absorption structure 10321 to the display device 20; the display device 20 is used to light up the pixel unit corresponding to the identified light absorption structure 10321, wherein the illuminated pixel unit is used to display the dot matrix drawn by the optical pointer 31 on the display panel 10.

[0099] In a possible implementation, the optical pointing object 31 may be an optical pen including a light source 311 and a camera component 312 , wherein the light source 311 may be an infrared light source, and the camera component 312 may be a high-speed infrared camera.

[0100] Exemplarily, the light source 311 may be used to emit incident light of a specific wavelength to the display panel 10 , and the camera assembly 312 may be used to receive light reflected by the diffuse reflection layer 1031 of the display panel 10 from a portion of the light of the specific wavelength.

[0101] The dot matrix recognition system 30 provided in the embodiment of the present application can use the light source 311 of the optical pointing object 31 as the incident light of the display panel 10, refract or reflect the incident light to the diffuse reflection layer 1031 of the display panel 10 through the internal bending structure 10331 of the display panel 10, and receive the reflected light from the diffuse reflection layer 1031 by the camera component 312 of the optical pointing object 31, so as to identify the light absorption structure 10321 corresponding to the light source 311 based on the reflected light received by the camera component 312, so as to determine the trajectory of the optical pointing object 31.

[0102] In another embodiment of the present application, a corresponding relationship between the size design of the light absorption structure 10321 and the dot matrix recognition effect is also provided.

[0103] In a possible implementation, the size of the light absorption structure 10321 of the display panel 10 is negatively correlated with the resolution of the camera assembly 312 .

[0104] For example, the larger the size of the light absorption structure 10321 is, the easier it is to be identified, and the lower the recognition resolution accuracy requirement for the camera component 312 is.

[0105] For example, when the orthographic projection patterns of the light absorption structure 10321 are respectively presented as the above-mentioned point-shaped, strip-shaped non-closed pattern and frame-shaped closed pattern, the recognition resolution accuracy of the camera component 312 is ranked from high to low as point-shaped light absorption structure 10321, strip-shaped light absorption structure 10321, and frame-shaped light absorption structure 10321.

[0106] In a possible implementation, the spacing distance between adjacent light absorption structures 10321 is negatively correlated with the accuracy of the dot matrix recognition result.

[0107] Exemplarily, the density of the light absorption structure 10321 is negatively correlated with the spacing distance between adjacent light absorption structures 10321. When the spacing distance between adjacent light absorption structures 10321 is smaller, the light absorption structure 10321 is denser. In this case, the accuracy of the dot matrix recognition result corresponding to the light absorption structure 10321 is higher.

[0108] In another embodiment of the present application, a dot matrix recognition method is also provided. Exemplarily, Fig.13 is a flow chart of the dot matrix recognition method provided in the embodiment of the present application, such as Fig.13 As shown, the method comprises the following steps: In step S1301 , the optical pointer 31 emits incident light of a specific wavelength to the display panel 10 .

[0109] In step S1302 , the display panel 10 absorbs a portion of incident light of a specific wavelength through the light absorption structure 10321 , and transmits a portion of the light of the specific wavelength to the diffuse reflection layer 1031 through the bending structure 10331 .

[0110] In step S1303 , the optical pointer 31 receives the reflected light of a portion of the light of a specific wavelength from the diffuse reflection layer 1031 , identifies the light absorption structure 10321 based on the received reflected light, and indicates the identified light absorption structure 10321 to the display device 20 .

[0111] In step S1304 , the display device 20 lights up the pixel units corresponding to the identified light absorption structure 10321 , wherein the lighted pixel units are used to display the dot matrix drawn by the optical pointing object 31 on the display panel 10 .

[0112] The dot matrix recognition method provided in the embodiment of the present application can use the light source 311 of the optical pointing object 31 as the incident light of the display panel 10, refract or reflect the incident light to the diffuse reflection layer 1031 of the display panel 10 through the internal bending structure 10331 of the display panel 10, and receive the reflected light from the diffuse reflection layer 1031 by the camera component 312 of the optical pointing object 31, so as to identify the light absorption structure 10321 corresponding to the light source 311 based on the reflected light received by the camera component 312, so as to determine the trajectory of the optical pointing object 31.

[0113] In another embodiment of the present application, a computer device 1400 is also provided, which includes a central processing unit (CPU) 1401, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 1402 or a program loaded from a storage part 1408 to a random access memory (RAM) 1403. Various programs and data required for the operation instructions of the system are also stored in the random access memory (RAM) 1403. The central processing unit (CPU) 1401, the read-only memory (ROM) 1402, and the random access memory (RAM) 1403 are connected to each other through a bus 1404. An input / output (I / O) interface 1405 is also connected to the bus 1404.

[0114] The following components are connected to the input / output (I / O) interface 1405: an input section 1406 including a keyboard, a mouse, etc.; an output section 1407 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 1408 including a hard disk, etc.; and a communication section 1409 including a network interface card such as a LAN card, a modem, etc. The communication section 1409 performs communication processing via a network such as the Internet. A drive 1410 is also connected to the input / output (I / O) interface 1405 as needed. A removable medium 1411, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 1410 as needed so that a computer program read therefrom is installed into the storage section 1408 as needed.

[0115] In particular, according to an embodiment of the present application, the above reference flow chart Fig.13The described process can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through the communication part 1409, and / or installed from a removable medium 1411. When the computer program is executed by the central processing unit (CPU) 1401, the above-mentioned functions defined in the system of the present application are executed.

[0116] It should be noted that the computer-readable medium shown in the present application may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, device or device. In the present application, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries a computer-readable program code. This propagated data signal may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium that matches a computer-readable storage medium, which may send, propagate or transmit a program for use by or in conjunction with an instruction execution system, device or device. The program code contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, optical cable, RF, etc., or any suitable combination of the above.

[0117] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, functions and operating instructions of the system, method and computer program product according to various embodiments of the present application. In this regard, each box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the aforementioned module, program segment or a part of a code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some implementations as replacements, the functions marked in the box can also occur in a sequence different from that marked in the accompanying drawings. For example, the boxes represented by two connections can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operating instruction, or can be implemented with a combination of dedicated hardware and computer instructions.

[0118] The units or modules involved in the embodiments described in the present application may be implemented by software or by hardware. The described units or modules may also be provided in a processor, for example, may be described as: a processor including a semantic extraction unit, a weight allocation unit, and a determination unit. The names of these units or modules do not, in some cases, constitute limitations on the units or modules themselves.

[0119] As another aspect, the present application further provides a computer-readable storage medium, which may be included in the computer device described in the above embodiment, or may exist independently without being installed in the computer device. The above computer-readable storage medium stores one or more programs, and when the above programs are used by one or more processors to execute the method described in the present application. For example, it can be executed Fig.13 The individual steps of the method are shown.

[0120] The present application embodiment provides a computer program product, which includes instructions. When the instructions are executed, the method described in the present application embodiment is executed. For example, Fig.13 The steps of any of the methods shown.

[0121] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the aforementioned disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.

Claims

1. A display panel, characterized in that: The display panel comprises: a substrate, a pixel layer arranged on one side of the substrate, and a positioning layer arranged on a side of the pixel layer away from the substrate; The positioning layer comprises a diffuse reflection layer, a dot matrix layer and a refractive layer which are stacked, wherein the diffuse reflection layer is arranged close to the substrate, the dot matrix layer is arranged on a side of the diffuse reflection layer away from the substrate, and the refractive layer is arranged on a side of the dot matrix layer away from the substrate; the dot matrix layer comprises a plurality of light absorption structures arranged in an array, and the light absorption structures are arranged in a non-pixel opening area of ​​the pixel layer along a direction perpendicular to the substrate; the light absorption structures are used to absorb light of a specific wavelength; The refractive layer has a bending structure bent toward the substrate at a position corresponding to each light absorbing structure of the dot matrix layer, and the bending structure is used to propagate incident light to the diffuse reflection layer connected to the light absorbing structure.

2. The display panel according to claim 1, characterized in that: The bending structure has a side wall which has an angle with the vertical direction of the substrate, and the angle between the side wall and the vertical direction of the substrate meets the range requirement of the incident light on the side wall; the range requirement includes that the range of the incident light on the side wall propagates in the diffuse reflection layer starting from the edge of the light absorption structure and does not exceed the range of the incident light on the side wall of the adjacent light absorption structure propagates in the diffuse reflection layer.

3. The display panel according to claim 2, characterized in that: The bending depth of the bending structure is negatively correlated with the angle between the side wall and the vertical direction of the substrate.

4. The display panel according to claim 1, characterized in that: The bending structure has an opening and a bottom, and an orthographic projection pattern of the bottom is contained in an orthographic projection pattern of the opening.

5. The display panel according to claim 1, characterized in that: Along a direction parallel to the substrate, a size of the opening is smaller than a size of a corresponding light absorbing structure.

6. The display panel according to claim 1, characterized in that: A light-transmitting structure is correspondingly arranged on one side of the light-absorbing structure close to the substrate, and the light-transmitting structure is used to absorb interfering light, where the interfering light is light other than the light of the specific wavelength.

7. The display panel according to any one of claims 1 to 6, characterized in that: Along a direction parallel to the substrate, a projection pattern of the bending structure is a triangle or a trapezoid.

8. The display panel according to any one of claims 1 to 7, characterized in that: The orthographic projection pattern of the light absorption structure at least includes a closed pattern and / or a non-closed pattern; the closed pattern surrounds at least one pixel unit, and the non-closed pattern is arranged at least one pixel unit apart.

9. A display device, characterized in that: A display panel comprising any one of claims 1 to 8.

10. A dot matrix recognition system, characterized in that: comprising an optical pointing object and the display device according to claim 9; The optical pointer is used to emit incident light of a specific wavelength to the display panel of the display device; The display panel is used to absorb part of the incident light of the specific wavelength through the light absorption structure, and transmit part of the light of the specific wavelength to the diffuse reflection layer of the display panel through the bending structure; The optical pointer is further used to receive reflected light from the diffuse reflection layer of the display panel to part of the light of the specific wavelength, identify the light absorption structure based on the received reflected light, and indicate the identified light absorption structure to the display device; The display device is used to light up the pixel units corresponding to the identified light absorption structure, wherein the lighted pixel units are used to display the dot matrix drawn by the optical pointing object on the display panel.

11. The dot matrix recognition system according to claim 10, characterized in that: The optical pointing object includes a light source and a camera assembly; The optical pointer is specifically used to use the light source to emit the incident light of the specific wavelength to the display panel, and use the camera component to receive the reflected light of part of the light of the specific wavelength by the diffuse reflection layer of the display panel; wherein the size of the light absorption structure of the display panel is negatively correlated with the resolution of the camera component.

12. The dot matrix recognition system according to claim 10, characterized in that: The spacing distance between adjacent light absorbing structures is negatively correlated with the accuracy of the dot matrix recognition result.

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