Light source structure and display device

Abstract

This invention discloses a light source structure and a display device, relating to the field of display technology. The light source structure includes: a substrate; a touch layer located on one side of the substrate, the touch layer including a first touch metal layer and a planarization layer located on the side of the first touch metal layer near the substrate; a light guide layer located on the side of the touch layer away from the substrate; a light source located on the side of the light guide layer; and a light diffusion structure further comprising a first portion located on the planarization layer and a second portion located on the first touch metal layer. The first portion includes a groove structure or a protrusion structure, and the second portion overlaps with the groove structure or protrusion structure in a direction perpendicular to the plane of the substrate. This invention enables the thinning of both the light source structure and the display device without affecting normal display.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more specifically, to a light source structure and a display device. Background Technology

[0002] With the continuous development of science and technology, more and more display devices are widely used in people's daily life and work, bringing great convenience to people's daily life and work, and becoming an indispensable tool for people today.

[0003] Reflective display devices are attracting increasing attention because they utilize ambient light conditions for display. When ambient light is poor, a front-facing backlight module is needed to assist the display. A common manufacturing process for touch-enabled reflective displays involves placing a light guide plate and a front-facing light source above the display panel, then placing a touch unit above the light guide plate, and finally a protective substrate above the touch unit. The front-facing backlight module typically uses a traditional light guide plate. Dots, with diameters in the millimeters, are formed on the surface of the light guide plate through etching, laser engraving, and dotting processes. Since the light guide plate is positioned directly above the display panel, these dots can negatively impact the display. Optical interference phenomena, such as moiré patterns, caused by the dots are easily visible on the front of the reflective display device, especially in consumer handheld display terminals where these dot-related display defects urgently need to be addressed.

[0004] Therefore, there is an urgent need to provide a light source structure and display device that can improve display defects caused by halftone dots. Summary of the Invention

[0005] In view of this, the present invention provides a light source structure and a display device to improve display defects caused by halftone dots.

[0006] On one hand, the present invention provides a light source structure, comprising:

[0007] substrate;

[0008] A touch layer located on one side of the substrate, the touch layer includes a first touch metal layer and a planarization layer located on the side of the first touch metal layer close to the substrate;

[0009] A light guide layer located on the side of the touch layer away from the substrate, the light guide layer includes a first upper surface and a first lower surface opposite each other, and a first side surface located between the first upper surface and the first lower surface;

[0010] A light source located on the first side of the light guide layer;

[0011] It also includes a light diffusion structure located between the substrate and the light guide layer. The light diffusion structure includes a first part and a second part. The first part is located in the planarization layer, and the second part is located in the first touch metal layer. The first part includes a groove structure or a protrusion structure. In the direction perpendicular to the plane of the substrate, the second part overlaps with the groove structure or the protrusion structure.

[0012] On the other hand, the present invention provides a display device, comprising: a reflective display panel; a light source structure located on one side of the light-emitting surface of the reflective display panel, the light source structure being the aforementioned light source structure, wherein a light guide layer is located on the side of the substrate close to the reflective display panel, and the substrate is reused as a cover plate of the display device.

[0013] Compared with the prior art, the light source structure and display device provided by the present invention achieve at least the following beneficial effects:

[0014] The light source structure provided by the present invention includes a substrate; a touch layer located on one side of the substrate, the touch layer including a first touch metal layer and a planarization layer located on the side of the first touch metal layer close to the substrate; a light guide layer located on the side of the touch layer away from the substrate; a light source located on the side of the light guide layer; and a light diffusion structure further comprising a first part located on the planarization layer and a second part located on the first touch metal layer, the first part including a groove structure or a protrusion structure, and the second part overlapping the groove structure or protrusion structure in a direction perpendicular to the plane of the substrate. This invention eliminates the halftone dots formed by etching, laser engraving, and dotting processes, thus avoiding display defects caused by halftone dots. The invention incorporates a light diffusion structure. The first part of the light diffusion structure is located in the planarization layer, and the second part is located in the first touch metal layer. The first part includes a groove structure or a raised structure. The second part overlaps with the groove structure or raised structure in a direction perpendicular to the plane of the substrate. Because the first part has a groove structure or raised structure, the second part also has a surface that matches the groove structure or raised structure. Light emitted from a light source located on the first side of the light guide layer... Multiple total internal reflections occur between the first upper surface and the first lower surface, transmitting light from the first side to the side away from the first side. When light hits the surface of the second part, the reflected light is scattered in all directions and reflected back to one side of the first lower surface of the light guide layer, serving as the backlight module of the display panel in the display device. Since the first part is located on the planarization layer and the second part is located on the first touch metal layer, there is no need to set dots on the light guide layer. Instead, the light diffusion structure made of the existing film layer of the reflective display device with touch function can be used to reduce the overall thickness of the light source structure and achieve a thinner and lighter display device.

[0015] Of course, any product implementing this invention does not necessarily need to achieve all of the technical effects described above at the same time.

[0016] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0018] Figure 1 This is a schematic diagram of a planar structure of a light source provided by the present invention;

[0019] Figure 2 yes Figure 1 A cross-sectional view along line A-A' in the middle;

[0020] Figure 3 yes Figure 1 Another cross-sectional view along the A-A' direction;

[0021] Figure 4 yes Figure 1 Another cross-sectional view along the A-A' direction;

[0022] Figure 5 yes Figure 1 Another cross-sectional view along the A-A' direction;

[0023] Figure 6 yes Figure 1 Another cross-sectional view along the A-A' direction;

[0024] Figure 7 yes Figure 1 A cross-sectional view along the M-M' direction;

[0025] Figure 8 yes Figure 1 A cross-sectional view along the N-N' direction;

[0026] Figure 9 This is a schematic diagram of a planar structure of another light source structure provided by the present invention;

[0027] Figure 10 This is a schematic diagram of a planar structure of another light source structure provided by the present invention;

[0028] Figure 11 yes Figure 1 A cross-sectional view along the B-B' direction;

[0029] Figure 12 yes Figure 1 Another cross-sectional view along the B-B' direction;

[0030] Figure 13 yes Figure 1 A cross-sectional view along the C-C' direction;

[0031] Figure 14 This is a schematic diagram of a planar structure of another light source structure provided by the present invention;

[0032] Figure 15 yes Figure 14 A cross-sectional view along the D-D' direction;

[0033] Figure 16 This is a schematic diagram of a planar structure of another light source structure provided by the present invention;

[0034] Figure 17 This is a schematic diagram of the planar structure of a display device provided by the present invention;

[0035] Figure 18 yes Figure 17 A cross-sectional view along the E-E' direction;

[0036] Figure 19 This is a schematic diagram of the planar structure of another display device provided by the present invention;

[0037] Figure 20 yes Figure 19 A cross-sectional view along the F-F' direction. Detailed Implementation

[0038] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0039] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0040] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0041] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0042] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0043] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 , Figure 1 This is a schematic diagram of a planar structure of a light source provided by the present invention. Figure 2 yes Figure 1 A cross-sectional view along line A-A'. Figure 3 yes Figure 1 Another cross-sectional view along the A-A' direction. Figure 4 yes Figure 1 Another cross-sectional view along the A-A' direction. Figure 5 yes Figure 1 Another cross-sectional view along the A-A' direction. Figure 6 yes Figure 1 Another cross-sectional view along the A-A' direction. Figure 7 yes Figure 1 Another cross-sectional view along the M-M' direction. This embodiment provides a light source structure 100, including: a substrate 10; a touch layer 20 located on one side of the substrate 10, the touch layer 20 including a first touch metal layer 21 and a planarization layer 22 located on the side of the first touch metal layer 21 close to the substrate 10; a light guide layer 30 located on the side of the touch layer 20 away from the substrate 10, the light guide layer 30 including a first upper surface 31 and a first lower surface 32 opposite to each other, and a first side surface 33 located between the first upper surface 31 and the first lower surface 32; a light source 40 located on the first side surface 33 of the light guide layer 30; and a light diffusion structure 50 located between the substrate 10 and the light guide layer 30, the light diffusion structure 50 including a first part 51 and a second part 52, the first part 51 being located on the planarization layer 22, the second part 52 being located on the first touch metal layer 21, the first part 51 including a groove structure 5101 or a protrusion structure 5102, and the second part 52 overlapping the groove structure 5101 or the protrusion structure 5102 in the direction perpendicular to the plane of the substrate 10.

[0044] Specifically, the material of the substrate 10 can be a rigid material or a flexible material. When the substrate 10 is a rigid material, it can be glass, etc., and when the substrate 10 is a flexible material, it can be polyimide, etc. There is no specific limitation on the material of the substrate 10 here. Of course, since the substrate 10 is located at the human eye's observation point, the higher the transmittance of the substrate 10, the easier it is for the display device 1000 to be recognized by the human eye after display. For example, the transmittance is above 95%.

[0045] The touch layer 20 enables the display device to have touch functionality. The touch layer 20 includes at least a first touch metal layer 21 and a planarization layer 22, and may also include a second touch metal layer 23. No specific limitation is made here. In this invention, the first touch metal layer 21 is the metal layer closest to the light guide layer 30. The first touch metal layer 21 can be made of metal materials such as indium tin oxide (ITO), copper, silver, or titanium / aluminum / titanium. The planarization layer 22 can be made of organic materials, such as OC resin. OC resin has strong light transmittance, which can improve display performance, and the thickness of organic materials can be made relatively thick as needed. Of course, the first touch metal layer 21 and the planarization layer 22 in this invention can also be made of other materials, which are not specifically limited here.

[0046] Understandably, referring to Figure 7 A light guide layer 30 is included on the side of the touch layer 20 away from the substrate 10. The light guide layer 30 includes a first upper surface 31 and a first lower surface 32 opposite to each other, and a first side surface 33 located between the first upper surface 31 and the first lower surface 32. The light guide layer 30 in this invention can have two embodiments: one, referring to... Figure 2 A second OC layer 81 is formed on the side of the first touch metal layer 21 away from the substrate 10. A thicker optical adhesive layer 82 is then formed on the side of the second OC layer 81 away from the substrate 10. This thicker optical adhesive layer 82 is reused as a light guide layer 30, which can reduce the thickness of the light guide layer 30. Of course, since optical adhesive has excellent light transmittance, it can serve as the light guide layer 30 of the front light source structure 100 (i.e., the light source structure 100 is located on the side of the light-emitting surface of the display panel), which can improve the light transmittance of the light source structure 100. Secondly, referring to Figure 3 A second OC layer 81 is formed on the side of the first touch metal layer 21 away from the substrate 10. A thin optical adhesive layer 82 is then formed on the side of the second OC layer 81 away from the substrate 10. A light guide plate 83 is then attached to the side of the optical adhesive layer 82 away from the substrate 10. The light guide plate 83 can be made of optically transparent materials such as epoxy resin, acrylic, or silicone. The optical adhesive layer 82 and the light guide plate 83 together serve as the light guide layer 30, and the light from the light source 40 diffuses away from the first side 33 through the optical adhesive layer 82 and the light guide plate 83.

[0047] The light source 40 of this invention is a side-lit light source 40, see reference. Figure 1 and Figure 7The light source 40 is located on the first side 33 of the light guide layer 30. Optionally, the light source 40 includes multiple LEDs 401, which are arranged along the first direction X. The light emission direction of the LEDs 401 is towards the first side 33 of the light guide layer 30. It should be noted that, since the light source 40 is located on the first side 33 of the light guide layer 30, in order to ensure uniform brightness within the light guide layer 30, the light emission surface of the light source 40 is positioned at a distance from the first side 33 by a predetermined length. This ensures uniform brightness of the light emitted from the light source 40. The distance from the light emission surface of the LED 401 to the display area of ​​the display device is the light mixing distance.

[0048] The present invention provides a light diffusion structure 50, wherein a first part 51 of the light diffusion structure 50 is located on a planarization layer 22, and a second part 52 is located on a first touch metal layer 21. The first part 51 includes a groove structure 5101 or a protrusion structure 5102, as shown in the figure. Figure 2 , Figure 3 and Figure 5 , Figure 6 , Figure 2 , Figure 3 , Figure 5 and Figure 6 The first part 51 includes a protruding structure 5102. Figure 4 The first part 51 includes a groove structure 5101 and a protrusion structure 5102, which can be a protrusion formed by protruding towards the side away from the substrate 10, and a groove structure 5101 can be a groove formed by recessing towards one side of the substrate. It should be noted that when forming the protrusion structure 5102, a planarization layer 22 is first formed, and then the protrusion structure 5102 is formed on the side of the planarization layer 22 away from the substrate 10 by exposure and development at a corresponding local position; similarly, when forming the groove structure 5101, a planarization layer 22 can be first fabricated, and then the groove structure 5101 can be formed on the side of the planarization layer 22 away from the substrate 10 by exposure and development. Both the groove structure 5101 and the protrusion structure 5102 have an inclined surface, which forms an angle with the direction perpendicular to the plane of the substrate 10, and the angle is not equal to 90°. Figure 5 The cross-section of the central convex structure 5102 is triangular. Figure 6 The cross-section of the central convex structure 5102 is an inverted trapezoid. Figure 2 and Figure 3 The cross-section of the protruding structure 5102 is arc-shaped. Figure 4 The cross-section of the groove structure 5101 is arc-shaped; however, this is only for illustrative purposes. Additionally... Figure 1 The illustration is only shown in the case of the orthographic projection of the second part 52 onto the plane of the substrate 10 as a circle. Of course, the orthographic projection of the second part 52 onto the plane of the substrate 10 can also be other shapes, which are not specifically limited here.

[0049] It is understood that since the first part 51 of the present invention is located on the side of the second part 52 close to the substrate 10, the first part 51 located on the planarization layer 22 is formed first during manufacturing, and then the second part 52 located on the first touch metal layer 21 is formed, so it is easy to manufacture the protrusion structure 5102 or the groove structure 5101.

[0050] Figure 1 The location of the opening region KK of sub-pixel PX is shown. Of course, sub-pixel PX does not belong to the light source structure 100. The light source structure 100 of the present invention can be used in a display device. The light diffusion structure 50 does not overlap with the opening region KK of sub-pixel PX, so it does not affect the normal display.

[0051] In this invention, the second part 52 overlaps with the groove structure 5101 or the protrusion structure 5102 in a direction perpendicular to the plane of the substrate 10, so that the surface of the second part 52 (the surface on the side away from the substrate 10) can form a surface that matches the groove structure 5101 or the protrusion structure 5102.

[0052] Since the first part 51 has a groove structure 5101 or a protrusion structure 5102, the second part 52 overlaps with the groove structure 5101 or the protrusion structure 5102 in a direction perpendicular to the plane of the substrate 10. Because the thickness of the first touch metal layer 21 is small, typically at the nanometer level, the thickness of the second part 52 is also small. Therefore, the second part 52 will also have a surface that matches the groove structure 5101 or the protrusion structure 5102, as can be seen from... Figures 2 to 7 The light emitted by the light source 40 located on the first side 33 of the light guide layer 30 undergoes multiple total internal reflections between the first upper surface 31 and the first lower surface 32, transmitting from the first side 33 to the side away from the first side 33. When the light hits the surface of the second part 52, the reflected light is scattered in all directions and reflected back to one side of the first lower surface 32 of the light guide layer 30, serving as the backlight module of the display panel in the display device. Since the first part 51 is located on the planarization layer 22 and the second part 52 is located on the first touch metal layer 21, there is no need to set halftone dots on the light guide layer 30. Instead, the light diffusion structure 50, which is made using the existing film layer of the reflective display device with touch function, can reduce the overall thickness of the light source structure 100, achieving a thinner and lighter display device. Of course, since this invention eliminates the halftone dots formed by etching, laser engraving, and dotting processes, there are no display defects caused by halftone dots.

[0053] In some alternative embodiments, refer to Figure 8 , Figure 8 yes Figure 1 A cross-sectional view along the N-N' direction. Figure 8The first part 51 on the side closer to the first side 33 includes a groove structure 5101, while the first part 51 on the side farther from the first side 33 includes a protrusion structure 5102. The groove structure 5101 is recessed towards the substrate 10, and the protrusion structure 5102 protrudes towards the substrate 10. The light diffusion capability of the second part 52 covered by the groove structure 5101 is less than that of the second part 52 covered by the protrusion structure 5102. It should be noted that the light source 40 is located on one side of the first side 33, that is, the light source 40 is closer to the first side 33 and farther from the second side 34. Therefore, the light in the light guide layer 30 is stronger on the side closer to the first side 33 and weaker on the side farther from the first side 33. After reflection by the second part 52, the light intensity near the first side 33 will be greater than the light intensity far from the first side 33. Figure 8 In this embodiment, the first part 51 near the first side 33 includes a groove structure 5101, while the first part 51 away from the first side 33 includes a protrusion structure 5102. Thus, the light diffusion capability of the second part 52 covered by the groove structure 5101 is less than that of the second part 52 covered by the protrusion structure 5102. This ensures that the reflection of light by the second part 52 near the light source 40 and the second part 52 away from the light source 40 is basically the same. After reflection by the second part 52, the light intensity near the first side 33 is basically the same as the light intensity away from the first side 33, thereby better ensuring the uniformity of the light entering the display panel.

[0054] In some optional embodiments, the cross-section of the first part 51 on the side closer to the first side 33 is an inverted trapezoid, and the cross-section of the first part 51 on the side farther from the first side 33 is a triangle (not shown in the figure). Of course, the base area of ​​the inverted trapezoidal cross-section and the base area of ​​the triangular cross-section are equal. Since the top surface of the inverted trapezoidal cross-section is a plane, its diffuse reflection capability is less than that of the inclined surface of the triangle. The light source 40 is located on one side of the first side 33, meaning it is closer to the first side 33 and farther from the second side 34. Therefore, the light in the light guide layer 30 is stronger on the side closer to the first side 33 and weaker on the side farther from the first side 33. The weaker the light on one side of surface 33, the greater the light intensity near the first side 33 will be after reflection by the second part 52. As a result, the cross-section of the first part 51 on the side near the first side 33 is an inverted trapezoid, and the cross-section of the first part 51 on the side away from the first side 33 is a triangle. This ensures that the reflection effect of the second part 52 near the light source 40 and the second part 52 away from the light source 40 is basically the same. After reflection by the second part 52, the light intensity near the first side 33 is basically the same as the light intensity away from the first side 33, thus better ensuring the uniformity of the light entering the display panel.

[0055] In some alternative embodiments, refer to Figure 9 , Figure 9 This is a schematic diagram of a planar structure of another light source structure provided by the present invention, wherein the arrangement spacing of the second part 52 near the first side 33 is greater than the arrangement spacing of the second part 52 away from the first side 33.

[0056] like Figure 9 As shown, along the second direction Y, the second side 34 is disposed opposite to the first side 33, that is, the second side 34 is located on the side of the light guide layer 30 away from the first side 33. The arrangement spacing of the second parts 52 closer to the first side 33 is greater than the arrangement spacing of the second parts 52 farther from the first side 33. In some optional embodiments, along the direction from the first side 33 to the second side 34, the arrangement spacing of the second parts 52 decreases sequentially. The arrangement spacing of the second parts 52 closer to the first side 33 is m1, the arrangement spacing of the second parts 52 closer to the second side 34 is m3, and the arrangement spacing of the second parts 52 in the middle region between the first side 33 and the second side 34 is m2. m1, m2, and m3 decrease sequentially, that is, m1 > m2 > m3.

[0057] It is understandable that the light source 40 is located on one side of the first side 33, meaning the light source 40 is closer to the first side 33 and farther from the second side 34. Therefore, the light intensity is stronger on the side of the light guide layer 30 closer to the first side 33 and weaker on the side farther from the first side 33. After reflection by the second part 52, the light intensity near the first side 33 will be greater than the light intensity far from the first side 33. In this embodiment, the spacing of the second parts 52 closer to the first side 33 is greater than the spacing of the second parts 52 farther from the first side 33. The second part 52 is sparsely arranged on one side of the first side 33 and densely arranged on the side away from the first side 33. Therefore, the amount of light reflected by the sparsely arranged second part 52 is less than the amount of light reflected by the densely arranged second part 52. This arrangement can ensure that the reflection effect of the second part 52 near the light source 40 and the second part 52 away from the light source 40 is basically the same. After being reflected by the second part 52, the light intensity near the first side 33 is basically the same as the light intensity on the side away from the first side 33, thereby better ensuring the uniformity of the light entering the display panel.

[0058] In some alternative embodiments, refer to Figure 10 , Figure 10 This is a schematic diagram of a planar structure of another light source structure provided by the present invention. The projected area of ​​the second part 52 near the first side 33 on the plane where the substrate 10 is located is smaller than the projected area of ​​the second part 52 away from the first side 33 on the plane where the substrate 10 is located.

[0059] like Figure 10 As shown, along the second direction Y, the second side 34 is disposed opposite to the first side 33. That is, the second side 34 is located on the side of the light guide layer 30 away from the first side 33. The projected area of ​​the second part 52 closer to the first side 33 on the plane of the substrate 10 is smaller than the projected area of ​​the second part 52 farther from the first side 33 on the plane of the substrate 10. In some optional embodiments, the projected area of ​​the second part 52 on the plane of the substrate 10 increases sequentially along the direction from the first side 33 to the second side 34.

[0060] It is understandable that the light source 40 is located on one side of the first side 33, that is, the light source 40 is closer to the first side 33 and farther from the second side 34. Therefore, the light in the light guide layer 30 is stronger on the side closer to the first side 33 and weaker on the side farther away from the first side 33. After reflection by the second part 52, the light intensity near the first side 33 will be greater than the light intensity far from the first side 33. In this embodiment, the projected area of ​​the second part 52 near the first side 33 on the plane of the substrate 10 is smaller than the projected area of ​​the second part 52 far from the first side 33 on the plane of the substrate 10. Therefore, the amount of light reflected by the second part 52 near the first side 33 will be less than the amount of light reflected by the second part 52 near the second side 34. This ensures that the reflection effect of the second part 52 near the light source 40 and the second part 52 far from the light source 40 is basically the same. After reflection by the second part 52, the light intensity near the first side 33 and the light intensity far from the first side 33 are basically the same, thereby better ensuring the uniformity of the light entering the display panel.

[0061] In some optional embodiments, the arrangement spacing of the second part 52 near the first side 33 is greater than that of the second part 52 away from the first side 33. At the same time, the orthographic projection area of ​​the second part 52 near the first side 33 on the plane of the substrate 10 is smaller than that of the second part 52 away from the first side 33 on the plane of the substrate 10. The amount of light reflected by the second part 52 near the first side 33 is less than that reflected by the second part 52 near the second side 34. This can further ensure that the reflection effect of the second part 52 near the light source 40 and the second part 52 away from the light source 40 is basically the same. After reflection by the second part 52, the light intensity near the first side 33 is basically the same as that away from the first side 33, thereby better ensuring the uniformity of the light entering the display panel.

[0062] In some alternative embodiments, reference continues to be made to... Figures 2 to 6The orthographic projection of the second part 52 on the substrate 10 covers the orthographic projection of the groove structure 5101 on the substrate 10, or the orthographic projection of the second part 52 on the substrate 10 covers the orthographic projection of the protrusion structure 5102 on the substrate 10.

[0063] Figure 2 and Figure 3 In the middle, the orthographic projection of the second part 52 on the substrate 10 covers the orthographic projection of the protrusion structure 5102 on the substrate 10. Figure 4 In this design, the orthographic projection of the second part 52 onto the substrate 10 covers the orthographic projection of the groove structure 5101 onto the substrate 10. It is understood that metal can reflect light, so the part that can reflect light is the second part 52 located in the first touch metal layer 21. The shape of the second part 52 matches that of the first part 51. Since the second part 52 is fabricated on the side of the first part 51 away from the substrate 10, when light strikes the second part 52, it can be reflected on the surface of the second part 52 (the surface away from the substrate 10). Therefore, when the orthographic projection of the second part 52 onto the substrate 10 covers the orthographic projection of the groove structure 5101 onto the substrate 10, or when the orthographic projection of the second part 52 onto the substrate 10 covers the orthographic projection of the protrusion structure 5102 onto the substrate 10, the area of ​​the second part 52 is large enough to better reflect light.

[0064] In some alternative embodiments, reference continues to be made to... Figures 2 to 4 Within the first plane, the groove structure 5101 or the protrusion structure 5102 is arc-shaped, and the first plane is perpendicular to the plane where the substrate 10 is located.

[0065] Figures 2 to 4 The first plane is not shown in the diagram, but it can be understood that the section along A-A' is the first plane. Figure 2 and Figure 3 In the middle, the raised structure 5102 is arc-shaped. Figure 4 In the middle, the groove structure 5101 is arc-shaped, so the second part 52 is also arc-shaped in the first plane. When light shines on the second part 52, it can be scattered, so that the light is dispersed and the light is mixed more evenly. As a front light source structure 100, it can provide uniform backlight.

[0066] In some alternative embodiments, combined with Figures 2 to 4 and reference Figure 11 , Figure 12 , Figure 11 yes Figure 1 A cross-sectional view along the B-B' direction. Figure 12 yes Figure 1 Another cross-sectional view along the B-B' direction shows that the first part 51 is a hemispherical protrusion protruding away from the substrate 10, or the first part 51 is an arc-shaped groove recessed along the side close to the substrate 10.

[0067] Figure 2 , Figure 3 and Figure 11 In this structure, the first part 51 is a hemispherical protrusion extending away from the substrate 10, and the second part 52 covers the side of the first part 51 that is away from the substrate 10. When light strikes the second part 52, it is scattered on the surface of the second part 52. Figure 4 and Figure 12 In this embodiment, the first part 51 is an arc-shaped groove recessed along the side near the substrate 10, and the second part 52 covers the side of the first part 51 away from the substrate 10. When light hits the second part 52, it is scattered on the surface of the second part 52. In this embodiment, the first part 51 is either a hemispherical protrusion protruding away from the substrate 10, or an arc-shaped groove recessed along the side near the substrate 10, so that the second part 52 covering the first part 51 can better scatter light.

[0068] In some alternative embodiments, reference continues to be made to... Figure 1 and Figure 2 Along the direction parallel to the plane of the substrate 10, the width of the light diffusion structure 50 is w, 10μm≤w≤50μm;

[0069] And / or,

[0070] Along the direction perpendicular to the plane of the substrate 10, the thickness of the light diffusion structure 50 is d, where 0 μm < d < 5 μm.

[0071] Specifically, the width of the light diffusion structure 50 along the direction parallel to the plane of the substrate 10 is w. Here, the width refers to the first direction X. It can be understood that the light source structure 100 of the present invention can be used in the display device 1000. In order not to affect the aperture ratio of the display device 1000, the light diffusion structure 50 needs to be set in the non-aperture area NK of the sub-pixel PX. Along the first direction X, the width of the non-aperture area NK is usually about 50 μm. Therefore, along the direction parallel to the plane of the substrate 10, the width w of the light diffusion structure 50 should be less than or equal to 50 μm. Of course, the width w of the light diffusion structure 50 along the first direction X cannot be too small. If the width w of the light diffusion structure 50 along the first direction X is too small, it cannot reflect light well, and the light intensity is insufficient. In this embodiment, 10 μm ≤ w ≤ 50 μm, which can reflect light well, and the light intensity is sufficient to provide backlight for the display panel of the display device 1000. Moreover, it can make the light diffusion structure 50 located in the non-aperture area NK of the display device 1000, without affecting the aperture ratio of the display device 1000.

[0072] It is understandable that the thickness d of the light diffusion structure 50 along the direction perpendicular to the plane of the substrate 10 cannot be too large. If d is too large, it will increase the overall thickness of the light source structure 100, which is not conducive to the thinning of the light source structure 100. In this embodiment, the thickness of the light diffusion structure 50 along the direction perpendicular to the plane of the substrate 10 is d, 0μm < d < 5μm, which will not increase the overall thickness of the light source structure 100, and can also play the role of scattering light.

[0073] In some optional embodiments, the width of the light diffusion structure 50 is w in the direction parallel to the plane of the substrate 10, where 10μm≤w≤50μm; and the thickness of the light diffusion structure 50 is d in the direction perpendicular to the plane of the substrate 10, where 0μm<d<5μm. This not only reflects light well and provides sufficient light intensity to backlight the display panel of the display device 1000, but also allows the light diffusion structure 50 to be located in the non-aperture area NK of the display device 1000, without affecting the aperture ratio of the display device 1000, without increasing the overall thickness of the light source structure 100, and also serves to scatter light.

[0074] In some alternative embodiments, refer to Figure 1 and reference Figure 13 , Figure 13 yes Figure 1 A cross-sectional view along the C-C' direction shows that the touch layer 20 further includes a second touch metal layer located on the side of the planarization layer 22 near the substrate 10; the first touch metal layer 21 includes a first touch electrode 601 arranged along the first direction X and extending in the second direction Y, and the second touch metal layer 23 includes a second touch electrode 602 arranged along the second direction Y and extending in the first direction X, and the first touch electrode 601 and the second touch electrode 602 are insulated from each other;

[0075] In a direction perpendicular to the plane of the substrate 10, the first touch electrode 601 and the second touch electrode 602 intersect at the intersection point 24;

[0076] The planarization layer 22 at the intersection point 24 is reused as the first part 51, and the first touch electrode 601 at the intersection point 24 is reset as the second part 52.

[0077] Specifically, the first touch metal layer 21 includes a first touch electrode 601, and the second touch metal layer 23 includes a second touch electrode 602. The extending directions of the first touch electrode 601 and the second touch electrode 602 intersect or are perpendicular, and the first touch electrode 601 and the second touch electrode 602 are distributed in different touch metal layers. One of the first touch electrode 601 and the second touch electrode 602 is a transmitting electrode and the other is a sensing electrode, forming a mutual capacitance touch electrode 600. For example, the first touch electrode 601 is a transmitting electrode (Tx), and the second touch electrode 602 is a sensing electrode (Rx). Alternatively, the first touch electrode 601 is a sensing electrode, and the second touch electrode 602 is a transmitting electrode. These two electrodes are respectively used to transmit touch signals and to generate sensing signals based on the touch signals. By alternately transmitting touch signals from each transmitting electrode and detecting the sensing signals generated in each sensing electrode when different transmitting electrodes transmit, the location of the touch can be determined.

[0078] In a direction perpendicular to the plane of substrate 10, the first touch electrode 601 and the second touch electrode 602 intersect at intersection point 24. The planarization layer 22 at intersection point 24 is reused as the first part 51, and the first touch electrode 601 at intersection point 24 is reset as the second part 52. Specifically, the second touch electrode 602 is formed first, then the entire planarization layer 22 is fabricated, and the planarization layer 22 at intersection point 24 is exposed and developed to form a raised structure 5102 or a groove structure 5101. Figure 13 Taking only the raised structure 5102 as an example (the groove structure 5101 is not shown), a first touch electrode 601 is then fabricated. Thus, the surface of the first touch electrode 601 forms a surface that matches the raised structure 5102 or the groove structure 5101. When light from the light source 40 strikes the surface of the first touch electrode 601 at the intersection point 24, diffuse reflection occurs, achieving light diffusion. In this embodiment, the reflected light from the first touch electrode 601 at the intersection point 24 serves to diffuse light, and there is no need to add a film layer to create a dot structure. This not only improves the display defects caused by visible dots but also facilitates the overall thinning of the light source structure 100.

[0079] In some alternative embodiments, refer to Figure 14 and Figure 15 , Figure 14 This is a schematic diagram of a planar structure of another light source structure provided by the present invention. Figure 15 yes Figure 14A cross-sectional view along the D-D' direction shows that the touch layer 20 further includes a second touch metal layer 23 located on the side of the planarization layer 22 near the substrate 10. The second touch metal layer 23 includes a first touch electrode 601, a second touch electrode 602, and a connecting portion 603. The first touch metal layer 21 includes a bridge portion 604. Two adjacent second touch electrodes 602 are electrically connected through the bridge portion 604, and two adjacent first touch electrodes 601 are electrically connected through the connecting portion 603. The planarization layer 22 includes a first region 2201, which is multiplexed as a first part 51. In a direction perpendicular to the plane of the substrate 10, the first region 2201 and the bridge portion 604 at least partially overlap, and the bridge portion 604 is multiplexed as a second part 52.

[0080] Specifically, a second touch metal layer 23 is also provided on the side of the planarization layer 22 near the substrate 10. Touch electrodes 600 are disposed on the second touch metal layer 23, namely, a first touch electrode 601 and a second touch electrode 602. The first touch electrode 601 and the second touch electrode 602 are distributed on the same touch metal layer. The first touch electrode 601 can be electrically connected through the connecting portion 603, which is also located on the second touch metal layer 23, while the second touch electrode 602 needs to be electrically connected through the bridge portion 604 located on the first touch metal layer 21. Optionally, the first touch electrode 601, the second touch electrode 602, and the connecting portion 603 can be made of indium tin oxide, so as not to affect the normal display. One of the first touch electrode 601 and the other of the second touch electrode 602 is a transmitting electrode and the other is a sensing electrode, and they are mutually capacitive touch electrodes. For example, the first touch electrode 601 is a transmitting electrode (Tx), and the second touch electrode 602 is a sensing electrode (Rx). Alternatively, the first touch electrode 601 is a sensing electrode, and the second touch electrode 602 is a transmitting electrode. The two types of electrodes are respectively used to transmit touch signals and to generate sensing signals based on the touch signals. By transmitting touch signals in turn from each transmitting electrode and detecting the sensing signals generated in each sensing electrode when different transmitting electrodes transmit, the location of the touch can be determined.

[0081] The planarization layer 22 includes a first region 2201, which is reused as a first part 51. In a direction perpendicular to the plane of the substrate 10, the first region 2201 at least partially overlaps with the bridge part 604, which is reused as a second part 52. Specifically, a second touch metal layer 23 is first formed, which includes a first touch electrode 601, a second touch electrode 602, and a connecting part 603. The first touch electrodes 601 are connected through the connecting part 603, and then the planarization layer is... A planarization layer 22 is fabricated in the first region 2201. The planarization layer 22 is then exposed and developed to form a raised structure 5102 or a groove structure 5101. A first touch metal layer 21 is then fabricated. The first touch metal layer 21 includes a bridge portion 604, which is electrically connected to a second touch electrode 602 via a via. The first region 2201 and the bridge portion 604 at least partially overlap. The bridge portion 604 is reused as a second portion 52. Thus, the surface of the bridge portion 604 forms an overlap with the raised structure 5102. Figure 15 (The illustration only uses the raised structure 5102 as an example) or the surface matching the groove structure 5101, when the light from the light source 40 hits the surface of the bridge portion 604, diffuse reflection occurs, achieving light diffusion. In this embodiment, the bridge portion 604 reflects light, which can play a role in light diffusion, and there is no need to add a film layer to create a dot structure. This not only improves the display defects caused by the visibility of the dots, but also facilitates the overall thinning of the light source structure 100.

[0082] In some alternative embodiments, reference continues to be made to... Figures 1 to 6 and reference Figure 16 , Figure 16 This is a schematic diagram of a planar structure of another light source structure provided by the present invention. The first touch metal layer 21 includes a touch electrode 600. In the direction perpendicular to the plane of the substrate 10, the light diffusion structure 50 and the touch electrode 600 do not overlap.

[0083] In this embodiment, refer to Figures 1 to 6 In the direction perpendicular to the plane of substrate 10, the light diffusion structure 50 and the touch electrode 600 do not overlap. Figures 1 to 6 The middle part is a mutual capacitance touch, and the light diffusion principle of the light diffusion structure 50 will not be elaborated here.

[0084] In this embodiment, refer to Figure 16 In the direction perpendicular to the plane of the substrate 10, the light diffusion structure 50 and the touch electrode 600 do not overlap. Figure 16This is a self-capacitive touchscreen. The self-capacitive touchscreen structure includes multiple touch electrodes 600 arranged in the same layer. The touch electrodes 600 are insulated from each other. Touch transmission signals are transmitted to the touch electrodes 600, and the touch transmission signals are usually pulse signals. The touch electrodes 600 receive touch transmission signals and are charged, forming a ground capacitance with the ground. This ground capacitance is the basic capacitance for detecting touch operations. When a touch object (such as a finger) approaches or presses on the display panel surface, a coupling capacitance is formed between the touch object and the corresponding touch electrode 600. This coupling capacitance causes a change in the basic capacitance value. When the basic capacitance changes, the charge of the touch electrode 600 also changes. Correspondingly, the change in charge generates a sensing current. The sensing current is transmitted to a chip (not shown in the figure). By calculating and analyzing the magnitude of the sensing current, the chip can determine the touch electrode 600 where the touch operation occurred, that is, determine the location information of the touch operation.

[0085] This invention is applicable not only to mutual capacitive touch but also to self-capacitive touch, enabling product diversification. By setting a light diffusion structure 50, this invention achieves light diffusion without the need for additional film layers to create the dot structure. This not only improves display defects caused by visible dots but also, since the first part 51 of the light diffusion structure 50 is on the same layer as the planarization layer 22 and the second part 52 is on the same layer as the first touch metal layer 21, it facilitates the overall thinning of the light source structure 100.

[0086] Based on the same inventive concept, the present invention also provides a display device 1000, see reference 1. Figure 17 and Figure 18 , Figure 17 This is a schematic diagram of the planar structure of a display device provided by the present invention. Figure 18 yes Figure 17 A cross-sectional view along the E-E' direction shows that the display device 1000 includes: a reflective display panel 200; a light source structure 100 located on the light-emitting side of the reflective display panel 200, wherein the light source structure 100 is the light source structure 100 of any of the above embodiments, wherein the light guide layer 30 is located on the side of the substrate 10 close to the reflective display panel 200, and the substrate 10 is reused as the cover plate 300 of the display device 1000.

[0087] Specifically, the light source structure 100 is located on the side of the display panel close to the light-emitting surface of the display device 1000. The light source structure 100 provides front backlight for the display panel, and the substrate 10 is reused as the cover plate 300 of the display device 1000.

[0088] The display panel is located on the side of the light source structure 100 away from the light-emitting surface of the display device 1000. The display panel includes a color filter substrate 98 and an array substrate 99 disposed opposite each other, and liquid crystal molecules 93 sandwiched between the color filter substrate 98 and the array substrate 99. The color filter substrate 98 is located on the side of the array substrate 99 closer to the light source structure 100. The color filter substrate 98 includes a first substrate 96, a color resist 91 and a black matrix BM located on the side of the first substrate 96 away from the light source structure 100. The color resist 91 corresponds to the aperture region KK of the sub-pixel PX. Figure 17 and Figure 18 Different patterns are filled in the opening area KK of the sub-pixel PX to represent different colors of the color resist 91. The black matrix BM corresponds to the non-opening area NK of the sub-pixel PX and prevents light mixing. The array substrate 99 includes a second substrate 97, an array layer 95 located on the side of the second substrate 97 near the light source structure 100, and a reflective electrode 94 located on the side of the array layer 95 near the light source structure 100. The array layer 95 includes a driving circuit, a pixel electrode, and a common electrode, which are not shown in the figure. The voltage difference between the pixel electrode and the common electrode forms an electric field that controls the deflection of the liquid crystal molecules 93.

[0089] The display device 1000 of the present invention has the beneficial effects of the light source structure 100 of any of the above embodiments, which will not be described in detail here.

[0090] In some alternative embodiments, reference continues to be made to... Figure 17 and Figure 18 The reflective display panel 200 includes a plurality of sub-pixels PX. Each sub-pixel PX includes an opening region KK and a non-opening region NK surrounding the opening region KK. In a direction perpendicular to the plane of the substrate 10, the second part 52 is located within the non-opening region NK.

[0091] Specifically, the sub-pixels PX are arranged in an array. Of course, this is only one arrangement of sub-pixels PX, and other arrangements are also possible. There are no specific limitations here. The aperture area KK of the sub-pixel PX is used for display, and the non-aperture area NK is used to prevent light mixing. In addition, signal lines can be set in the non-aperture area NK to prevent the signal lines from being seen on the side of the light-emitting surface, which would affect the display effect.

[0092] In this embodiment, the second part 52 is located in the non-opening area NK in the direction perpendicular to the plane of the substrate 10, so that the second part 52 will not be observed on the light-emitting surface side of the display device 1000, thus improving the display effect.

[0093] In some alternative embodiments, refer to Figure 19 and Figure 20 , Figure 19 This is a schematic diagram of the planar structure of another display device provided by the present invention. Figure 20 yes Figure 19A cross-sectional view along the F-F' direction shows that the display panel includes a black matrix BM, which includes an opening 701. In a direction perpendicular to the plane of the substrate 10, the opening overlaps with the opening region KK of the sub-pixel PX. The black matrix BM includes a first black matrix BM1 and a second black matrix BM2. The extension direction of the first black matrix BM1 intersects the extension direction of the second black matrix BM2. The interaction area between the first black matrix BM1 and the second black matrix BM2 is the first region 702.

[0094] In a direction perpendicular to the plane of the substrate 10, the second part 52 is located within the first region 702.

[0095] Specifically, the first black matrix BM1 extends along the second direction Y and is arranged along the first direction X, while the second black matrix BM2 extends along the first direction X and is arranged along the second direction Y. The first black matrix BM1 and the second black matrix BM2 intersect, and the transparent area enclosed by the first black matrix BM1 and the second black matrix BM2 corresponds to the opening area KK of the sub-pixel PX. The interaction area between the first black matrix BM1 and the second black matrix BM2 is the first region 702. In the direction perpendicular to the plane of the substrate 10, the second part 52 is located within the first region 702. Thus, the second part 52 is not observed on the light-emitting surface side of the display device 1000, improving the display effect.

[0096] In this embodiment, the first touch metal layer 21 includes a first touch electrode 601, and the second touch metal layer 23 includes a second touch electrode 602. The extending directions of the first touch electrode 601 and the second touch electrode 602 intersect or are perpendicular, and the first touch electrode 601 and the second touch electrode 602 are distributed in different touch metal layers. Alternatively, the first touch electrode 601 and the second touch electrode 602 can be disposed in the same second touch metal layer 23. The second touch metal layer 23 also includes a connecting portion 603, and the second touch electrode 602 is connected via a bridge portion 604 located in the first touch metal layer 21. See the attached document for details. Figure 14 and Figure 15 The bridge section 604 is reused as the second section 52. Similarly, in the direction perpendicular to the plane of the substrate 10, the second section 52 is located in the first region 702 (not shown in the figure). In this way, the second section 52 will not be observed on the light-emitting surface side of the display device 1000, thus improving the display effect.

[0097] Figure 19 and Figure 20In this process, the planarization layer 22 at the first region 702 is exposed and developed to form a raised structure 5102 or a groove structure 5101. Then, the first touch metal layer 21 is fabricated. Thus, the surface of the first touch metal layer 21 forms a surface that matches the raised structure 5102 or the groove structure 5101. When light from the light source 40 hits the surface of the first touch metal layer 21 above the first region 702, diffuse reflection occurs, achieving light diffusion. In this embodiment, the first touch metal layer 21 of the first region 702 reflects light, which can play a role in light diffusion. Moreover, there is no need to add a film layer to create a dot structure. This not only improves the display defects caused by visible dots, but also facilitates the overall thinning of the display device 1000. In addition, it can be understood that the first region 702 corresponds to the intersection of the first touch electrode 601 and the second touch electrode 602. By using the existing first touch electrode 601 of the light source structure with touch function to diffuse the light, there is no need to fabricate a second part 52 separately, which helps to reduce costs and simplify the manufacturing process.

[0098] As can be seen from the above embodiments, the light source structure and display device provided by the present invention achieve at least the following beneficial effects:

[0099] The light source structure provided by the present invention includes a substrate; a touch layer located on one side of the substrate, the touch layer including a first touch metal layer and a planarization layer located on the side of the first touch metal layer close to the substrate; a light guide layer located on the side of the touch layer away from the substrate; a light source located on the side of the light guide layer; and a light diffusion structure further comprising a first part located on the planarization layer and a second part located on the first touch metal layer, the first part including a groove structure or a protrusion structure, and the second part overlapping the groove structure or protrusion structure in a direction perpendicular to the plane of the substrate. This invention eliminates the halftone dots formed by etching, laser engraving, and dotting processes, thus avoiding display defects caused by halftone dots. The invention incorporates a light diffusion structure. The first part of the light diffusion structure is located in the planarization layer, and the second part is located in the first touch metal layer. The first part includes a groove structure or a raised structure. The second part overlaps with the groove structure or raised structure in a direction perpendicular to the plane of the substrate. Because the first part has a groove structure or raised structure, the second part also has a surface that matches the groove structure or raised structure. Light emitted from a light source located on the first side of the light guide layer... Multiple total internal reflections occur between the first upper surface and the first lower surface, transmitting light from the first side to the side away from the first side. When light hits the surface of the second part, the reflected light is scattered in all directions and reflected back to one side of the first lower surface of the light guide layer, serving as the backlight module of the display panel in the display device. Since the first part is located on the planarization layer and the second part is located on the first touch metal layer, there is no need to set dots on the light guide layer. Instead, the light diffusion structure made of the existing film layer of the reflective display device with touch function can be used to reduce the overall thickness of the light source structure and achieve a thinner and lighter display device.

[0100] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A light source structure, characterized by, The application relates to a touch screen, comprising: a substrate; a touch layer on one side of the substrate, the touch layer comprising a first touch metal layer and a planarization layer on the side of the first touch metal layer close to the substrate; a light guide layer on the side of the touch layer away from the substrate, the light guide layer not being provided with dots, the light guide layer comprising opposite first upper and lower surfaces and a first side surface between the first upper and lower surfaces; a light source on the first side surface of the light guide layer; a light diffusion structure between the substrate and the light guide layer, the light diffusion structure comprising a first part and a second part, the first part being on the planarization layer and the second part being on the first touch metal layer, the first part comprising a groove structure or a protruding structure, and the second part overlapping the groove structure or the protruding structure in a direction perpendicular to the plane of the substrate; the touch layer further comprising a second touch metal layer on the side of the planarization layer close to the substrate; the first touch metal layer comprising first touch electrodes arranged in a first direction and extending in a second direction, and the second touch metal layer comprising second touch electrodes arranged in the second direction and extending in the first direction, the first and second touch electrodes being insulated; the first touch electrodes and the second touch electrodes intersecting at intersection points in a direction perpendicular to the plane of the substrate; the planarization layer at the intersection points being multiplexed as the first part, and the first touch electrodes at the intersection points being multiplexed as the second part; during manufacturing, the second touch electrodes are formed first, then the planarization layer is integrally manufactured, the planarization layer at the intersection points is exposed and developed to form the protruding structure or the groove structure, and then the first touch electrodes are manufactured.

2. A light source structure, characterized by, The application relates to a touch screen, comprising: a substrate; a touch layer on one side of the substrate, the touch layer comprising a first touch metal layer and a planarization layer on the side of the first touch metal layer close to the substrate; a light guide layer on the side of the touch layer away from the substrate, the light guide layer not being provided with dots, the light guide layer comprising opposite first upper and lower surfaces and a first side surface between the first upper and lower surfaces; a light source on the first side surface of the light guide layer; a light diffusion structure between the substrate and the light guide layer, the light diffusion structure comprising a first part and a second part, the first part being on the planarization layer and the second part being on the first touch metal layer, the first part comprising a groove structure or a protruding structure, and the second part overlapping the groove structure or the protruding structure in a direction perpendicular to the plane of the substrate; The touch layer further comprises a second touch metal layer located on the side of the planarization layer close to the substrate, the second touch metal layer comprises a first touch electrode, a second touch electrode and a connecting part, the first touch metal layer comprises a cross-bridge part, two adjacent second touch electrodes are electrically connected through the cross-bridge part, two adjacent first touch electrodes are electrically connected through the connecting part, the planarization layer comprises a first area, the first area is multiplexed as the first part, in the direction perpendicular to the plane where the substrate is located, the first area at least partially overlaps with the cross-bridge part, and the cross-bridge part is multiplexed as the second part. In the manufacturing process, the second touch metal layer is formed first, then the planarization layer is integrally manufactured, the planarization layer of the first area is exposed and developed to form the protruding structure or the groove structure, and then the first touch metal layer is manufactured.

3. The light source structure according to claim 1 or 2, characterized by The orthographic projection of the second part on the substrate covers the orthographic projection of the groove structure on the substrate, or the orthographic projection of the second part on the substrate covers the orthographic projection of the protruding structure on the substrate.

4. The light source structure according to claim 1 or 2, characterized by In the first plane, the groove structure or the protruding structure is arc-shaped, and the first plane is perpendicular to the plane where the substrate is located.

5. The light source structure according to claim 4, wherein The first part is a hemispherical protrusion protruding away from the substrate, or the first part is an arc-shaped groove recessed along the side close to the substrate.

6. The light source structure according to claim 1 or 2, wherein In a direction parallel to the plane in which the substrate lies, the width of the light-diffusing structure is , ; And / or, In a direction perpendicular to the plane in which the substrate lies, the thickness of the light-diffusing structure is , 。 7. A display device, characterized by comprising: Comprise: A reflective display panel; A light source structure located on the light-emitting side of the reflective display panel, the light source structure is the light source structure according to any one of claims 1 to 6, wherein the light guide layer is located on the side of the substrate close to the reflective display panel, and the substrate is multiplexed as the cover plate of the display device.

8. The display device according to claim 7, wherein The reflective display panel comprises a plurality of sub-pixels, the sub-pixel comprises an opening area and a non-opening area surrounding the opening area, and in the direction perpendicular to the plane where the substrate is located, the second part is located in the non-opening area.

9. The display device of claim 8, wherein, The display panel comprises a black matrix, the black matrix comprises an opening, and in the direction perpendicular to the plane where the substrate is located, the opening overlaps with the opening area of the sub-pixel; the black matrix comprises a first black matrix and a second black matrix, the extension direction of the first black matrix and the extension direction of the second black matrix intersect, and the intersection area of the first black matrix and the second black matrix is a first area; In the direction perpendicular to the plane where the substrate is located, the second part is located in the first area.

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