Display device and manufacturing method thereof

Abstract

The invention provides a display device. The display device comprises a substrate; the reflection assembly comprises a reflection assembly upper end face far away from the substrate, the reflection assembly upper end face is provided with a plurality of protruding parts, and a first included angle is formed between the side edge tangent line of each protruding part and the reflection assembly upper end face; the display assembly includes a liquid crystal layer having a first refractive index; the light-emitting assembly comprises a light guide plate, the light guide plate has a second refractive index, the light guide plate comprises a light guide plate peripheral side face and a light guide plate upper end face away from the substrate, and the light guide plate upper end face is provided with a plurality of first sunken parts sunken towards the substrate. A second included angle is formed between the inclined side surface of the first concave part facing the peripheral side surface of the light guide plate and the upper end surface of the light guide plate; the light source is opposite to the peripheral side surface of the light guide plate and emits light to the peripheral side surface of the light guide plate, and a third included angle is formed between the light and the peripheral side surface; the second included angle is calculated according to the first included angle, the first refractive index, the second refractive index and the third included angle.

Description

Technical Field

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

[0002] Reflective display products (RLCD) rely on the metal layer of the TFT substrate to reflect ambient light to achieve display, without the need for a backlight source, and have the advantages of low power consumption, lightness and thinness. However, when the ambient light is relatively weak, a front light source is required to assist the display. Setting up a front light source to assist the display is prone to problems such as low contrast, poor image quality, yellowing of the display panel due to long-term outdoor use, and poor uniformity caused by the front light source, which reduces the display effect.

[0003] The above information disclosed in this section is only for understanding the background of the technical concept of the present disclosure and therefore, the above information may contain information that does not constitute the prior art. Summary of the invention

[0004] In one aspect, a display device is provided, comprising: a substrate; a reflective component, arranged on one side of the substrate, the reflective component comprising an upper end face of the reflective component away from the substrate, the upper end face of the reflective component being provided with a plurality of protrusions, a first angle θ1 being formed between a side tangent of the protrusion and the upper end face of the reflective component, the side tangent being a tangent of a side between a lowest point and a highest point of the protrusion at a midpoint; a display component, arranged on a side of the reflective component away from the substrate, the display component comprising a liquid crystal layer having a first refractive index n1; a light-emitting component, arranged on the display The light emitting component is on a side away from the substrate, the light emitting component comprises: a light guide plate, the light guide plate has a second refractive index n2, the light guide plate comprises a peripheral side surface of the light guide plate and an upper surface of the light guide plate away from the substrate, the upper surface of the light guide plate is provided with a plurality of first recessed portions recessed toward the substrate, the oblique side surfaces of the first recessed portions facing the peripheral side surface of the light guide plate form a second angle θ2 with the upper surface of the light guide plate; a light source is arranged opposite to the peripheral side surface of the light guide plate, the light source emits light toward the peripheral side surface of the light guide plate, and the light forms a third angle θ3 with the peripheral side surface of the light guide plate;

[0005] Wherein, the second angle θ2 satisfies the following relationship:

[0006]

[0007] In some exemplary embodiments of the present disclosure, the upper end surface of the light guide plate of the light guide plate includes: a first area, the orthographic projection of the first area on the substrate partially overlaps with the orthographic projection of the liquid crystal layer of the display component on the substrate; and a second area, the second area is located between the first area and the peripheral side surface of the light guide plate, wherein the first recessed portion is arranged in the first area.

[0008] In some exemplary embodiments of the present disclosure, a distribution density ρ of the first recessed portions in the first region gradually increases from a direction close to the peripheral side surface of the light guide plate toward a direction away from the peripheral side surface of the light guide plate.

[0009] In some exemplary embodiments of the present disclosure, the distribution density ρ of the first recessed portions in the first region satisfies the following relationship:

[0010]

[0011] Wherein, S1 is the opening area of ​​the first recessed portion, S2 is the unit area, N is the number of the first recessed portions within the unit area S2, and 4%≤ρ≤10%.

[0012] In some exemplary embodiments of the present disclosure, the orthographic projection of the light guide plate on the base substrate is circular; the first recessed portion includes a conical recessed portion or a truncated cone recessed portion, and the second angle θ2 is formed between the generatrix of the conical recessed portion or the truncated cone recessed portion and the upper end surface of the light guide plate.

[0013] In some exemplary embodiments of the present disclosure, the orthographic projection of the light guide plate on the substrate is an n-gon, where n is an integer greater than or equal to 5; the first recess includes: a conical recess or a truncated cone recess, wherein the second angle θ2 is formed between the generatrix of the conical recess or the truncated cone recess and the upper end surface of the light guide plate; and / or n pyramidal recesses or n prism-shaped recesses, wherein the oblique side surfaces of the n pyramidal recesses or n prism-shaped recesses facing the peripheral side surfaces of the light guide plate and the upper end surface of the light guide plate form the second angle θ2.

[0014] In some exemplary embodiments of the present disclosure, the orthographic projection of the light guide plate on the base substrate is a quadrilateral; the peripheral side surfaces of the light guide plate include a first peripheral side surface and a second peripheral side surface that are oppositely arranged, and a third peripheral side surface and a fourth peripheral side surface that are oppositely arranged, and the third peripheral side surface and the fourth peripheral side surface are respectively connected to and perpendicular to the first peripheral side surface and the second peripheral side surface; the light source is respectively arranged opposite to the first peripheral side surface and the second peripheral side surface.

[0015] In some exemplary embodiments of the present disclosure, the first recessed portion includes a quadrangular pyramidal recessed portion, and the quadrangular pyramidal recessed portion includes: a first oblique side surface, facing the first peripheral side surface; a second oblique side surface, arranged opposite to the first oblique side surface and facing the second peripheral side surface; a third oblique side surface, located between the first oblique side surface and the second oblique side surface, facing the third peripheral side surface; a fourth oblique side surface, arranged opposite to the third oblique side surface, and facing the fourth peripheral side surface; the first oblique side surface and the second oblique side surface respectively form the second angle θ2 with the upper end surface of the light guide plate.

[0016] In some exemplary embodiments of the present disclosure, the third oblique side surface and the fourth oblique side surface respectively form a fourth angle θ4 with the upper end surface of the light guide plate; wherein the second angle θ2 is smaller than the fourth angle θ4, and the fourth angle θ4≤80°.

[0017] In some exemplary embodiments of the present disclosure, there is a connecting chamfer R between the oblique side surfaces of the quadrangular pyramid-shaped recessed portion, and the connecting chamfer R is ≤1.5 um.

[0018] In some exemplary embodiments of the present disclosure, the depression depth of the quadrangular pyramid depression toward the substrate is h1, wherein 3um≤h1≤8um.

[0019] In some exemplary embodiments of the present disclosure, a plurality of second recessed portions recessed toward the base substrate are evenly arranged in the second region of the upper surface of the light guide plate; the second recessed portions include spherical cap recessed portions.

[0020] In some exemplary embodiments of the present disclosure, the depth of the spherical cap recessed portion toward the substrate is h2, 1um≤h2≤9um, and the cross-sectional diameter of the spherical cap recessed portion is D, 18um≤D≤50um.

[0021] The distribution density of the spherical cap recesses in the second region is less than or equal to 2%.

[0022] In some exemplary embodiments of the present disclosure, the liquid crystal layer of the display component includes a plurality of pixel units arranged in an array along a first direction and a second direction, and the first direction and the second direction intersect; each pixel unit includes a plurality of sub-pixels arranged in sequence in the first direction, the length direction of each sub-pixel extends along the second direction, and the width direction of the sub-pixel is parallel to the first direction.

[0023] In some exemplary embodiments of the present disclosure, the light guide plate includes a lower end surface of the light guide plate close to the base substrate, and the lower end surface of the light guide plate is provided with a third recessed portion recessed toward a direction away from the base substrate; the third recessed portion includes a V-groove recessed portion, and the V-groove recessed portions extend in the first direction and are arranged at intervals in the second direction.

[0024] In some exemplary embodiments of the present disclosure, the depth of the V-groove recessed portion in the direction away from the substrate is h3, 1um≤h3≤30um; the opening width of the V-groove recessed portion in the second direction is W, 5um≤W≤30um.

[0025] In some exemplary embodiments of the present disclosure, the opening width of the V-shaped groove recess is less than or equal to half of the width of the sub-pixel; and each sub-pixel includes at least one V-shaped groove recess extending in the first direction in the length direction.

[0026] In some exemplary embodiments of the present disclosure, the light source includes a single row of light sources composed of a plurality of lighting lamps spaced apart along the peripheral side of the light guide plate, and there is a spacing G between adjacent lighting lamps of the single row of light sources, and the spacing G satisfies the following relationship:

[0027] G=2×A×tanθ4

[0028] Wherein, A is the width of the peripheral side surface of the light guide plate from the first region, and θ4 is the refraction angle of the light beam of the lighting lamp after entering the light guide plate.

[0029] In some exemplary embodiments of the present disclosure, the light source includes multiple rows of light sources consisting of multiple single-row light sources staggered along the circumferential side surface of the light guide plate, wherein the single-row light source is composed of multiple lighting lamps spaced apart along the circumferential side surface of the light guide plate, and there is a spacing G between adjacent lighting lamps of the single-row light source, wherein 0.35mm≤G≤0.9mm.

[0030] In some exemplary embodiments of the present disclosure, the display device further includes: a touch component, which is arranged on a side of the light-emitting component away from the base substrate; a light-shielding component, which is located between the touch component and the light-emitting component, and the orthographic projection of the light-shielding component on the base substrate is located within the orthographic projection of the second area on the base substrate.

[0031] In some exemplary embodiments of the present disclosure, the light blocking assembly includes: a blocking main board arranged parallel to the upper end surface of the light guide plate; and a bent portion connected to the blocking main board, bending from the blocking main board away from the peripheral side surface of the light guide plate toward the upper end surface of the light guide plate.

[0032] In some exemplary embodiments of the present disclosure, the light shielding assembly includes: a shielding main board arranged parallel to the upper end surface of the light guide plate; and a shielding sub-plate located between the shielding main board and the light guide plate, the orthographic projection of the shielding sub-plate on the base substrate being located within the orthographic projection of the shielding main board on the base substrate, and the shielding sub-plate being arranged close to the first area.

[0033] In some exemplary embodiments of the present disclosure, the display device further includes: an adhesive layer, located between the touch component and the light blocking component, and between the light blocking component and the light emitting component, the orthographic projection of the adhesive layer on the base substrate being located within the orthographic projection of the second region on the base substrate.

[0034] In some exemplary embodiments of the present disclosure, the material used to manufacture the light guide plate includes glass.

[0035] In some exemplary embodiments of the present disclosure, an angle θ5 between an incident light ray of the light source and a peripheral side surface of the light guide plate satisfies 0°≤θ5≤60°.

[0036] In some exemplary embodiments of the present disclosure, the display device further includes: a touch component, which is arranged on a side of the light-emitting component away from the base substrate; and a bonding layer, which is located between the touch component and the light-emitting component and is used to bond the touch component and the light-emitting component together, and the orthographic projection of the bonding layer on the base substrate coincides with the orthographic projection of the liquid crystal layer of the display component on the base substrate.

[0037] In some exemplary embodiments of the present disclosure, the first angle θ1 satisfies: 5°≤θ1≤15°, and the second angle θ2 satisfies: 35°≤θ2≤50°.

[0038] Another aspect of the present disclosure provides a method for manufacturing a display device, comprising: providing a base substrate; forming a reflective component on one side of the base substrate, the reflective component comprising an upper end surface of the reflective component away from the base substrate, a plurality of protrusions being arranged on the upper end surface of the reflective component, a first angle θ1 being formed between a tangent line of a side edge of the protrusion and the upper end surface of the reflective component, the tangent line of the side edge being a tangent line of a side edge between a lowest point and a highest point of the protrusion at a midpoint position; forming a display component on a side of the reflective component away from the base substrate, the display component comprising a liquid crystal layer having a first refractive index n1; A light-emitting component is formed on a side away from the substrate, and the light-emitting component includes: forming a light guide plate, the light guide plate having a second refractive index n2, the light guide plate including a peripheral side surface of the light guide plate and an upper surface of the light guide plate away from the substrate, the upper surface of the light guide plate is provided with a plurality of first recessed portions recessed toward the substrate, and the oblique side surfaces of the first recessed portions facing the peripheral side surface of the light guide plate form a second angle θ2 with the upper surface of the light guide plate; a light source is formed at a position relative to the peripheral side surface of the light guide plate, the light source emits light toward the peripheral side surface of the light guide plate, and the light forms a third angle θ3 with the peripheral side surface of the light guide plate;

[0039] Wherein, the second angle θ2 satisfies the following relationship:

[0040]

[0041] In some exemplary embodiments of the present disclosure, the first ion beam includes an inclined ion beam in a first direction and an inclined ion beam in a second direction, the first recessed portion has an axis of symmetry, the inclined surface of the first recessed portion includes a first inclined surface and a second inclined surface that are mirror-symmetrically arranged relative to the axis of symmetry, and forming the first recessed portion in the first region by a first ion beam etching process includes: etching the first inclined surface of the first recessed portion by an inclined ion beam in the first direction, etching the second inclined surface of the first recessed portion by an inclined ion beam in the second direction, the first direction and the second direction are mirror-symmetrically arranged relative to the axis of symmetry, and the first direction forms a first angle θ with the upper end surface of the light guide plate 21 The second direction forms a second angle θ with the upper surface of the light guide plate 22 , and θ 21 =θ 22 =θ2.

[0042] In some exemplary embodiments of the present disclosure, the second ion beam includes an inclined ion beam in a third direction and an inclined ion beam in a fourth direction, the third recessed portion has a symmetry plane, the third recessed portion includes a first inclined surface and a second inclined surface that are mirror-symmetrically arranged relative to the symmetry plane, and forming the third recessed portion on the lower end surface of the light guide plate by the second ion beam etching process includes: etching the first inclined surface of the third recessed portion by using the inclined ion beam in the third direction, and etching the second inclined surface of the third recessed portion by using the inclined ion beam in the fourth direction, and the third direction and the fourth direction are mirror-symmetrical relative to the symmetry plane. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments of the present disclosure with reference to the accompanying drawings.

[0044] Figure 1A is a schematic plan view of a display substrate according to an exemplary embodiment of the present disclosure;

[0045] Figure 1B is a schematic cross-sectional structure diagram of a display substrate along the BB section line 1A according to an exemplary embodiment of the present disclosure;

[0046] Figure 1C is a schematic cross-sectional structural diagram of a display substrate along the BB section line of FIG1A according to another exemplary embodiment of the present disclosure;

[0047] Figure 2A is a schematic cross-sectional structural diagram of a reflective assembly according to an exemplary embodiment of the present disclosure;

[0048] Figure 2B is a schematic diagram of a light path entering a liquid crystal layer through a reflective component according to an exemplary embodiment of the present disclosure;

[0049] Figure 2C is a schematic diagram of the surface topography of a reflective component according to an exemplary embodiment of the present disclosure;

[0050] Figure 3A is a schematic cross-sectional structural diagram of a light emitting assembly according to an exemplary embodiment of the present disclosure;

[0051] Figure 3B is a schematic diagram of a light path after a light source of a light emitting assembly enters a light guide plate according to an exemplary embodiment of the present disclosure;

[0052] Figure 3C is a schematic diagram of a planar structure of a light emitting component according to an exemplary embodiment of the present disclosure;

[0053] Figure 3D is a schematic diagram of a three-dimensional structure of a light emitting assembly according to an exemplary embodiment of the present disclosure from one viewing angle;

[0054] Figure 3E is a schematic diagram of a three-dimensional structure of a light emitting assembly from another viewing angle according to an exemplary embodiment of the present disclosure;

[0055] Figure 4A is a schematic structural diagram of a first recessed portion on a light emitting component according to an exemplary embodiment of the present disclosure;

[0056] Figure 4B is a schematic structural diagram of a first recessed portion on a light emitting component according to another exemplary embodiment of the present disclosure;

[0057] Figure 4C is a curve showing the relationship between the second angle and the brightness of light emitted from the lower end surface of the light guide plate according to an exemplary embodiment of the present disclosure;

[0058] Figure 4D is a curve showing the relationship between the second included angle and the light output peak angle of the lower end surface of the light guide plate according to an exemplary embodiment of the present disclosure;

[0059] Figure 4E is a curve showing the relationship between the depth of the first recessed portion and the brightness of light emitted from the lower end surface of the light guide plate according to an exemplary embodiment of the present disclosure;

[0060] Figure 4F is a distribution density curve of the first recessed portions on the light guide plate according to an exemplary embodiment of the present disclosure;

[0061] Figure 4G is a schematic structural diagram of a first recessed portion on a light emitting component according to an exemplary embodiment of the present disclosure;

[0062] Figure 4H is a schematic structural diagram of a first recessed portion on a light emitting component according to another exemplary embodiment of the present disclosure;

[0063] Figure 5A is a schematic structural diagram of a second recessed portion on a light emitting component according to an exemplary embodiment of the present disclosure;

[0064] Figure 5B is a schematic diagram of a light source of a light emitting assembly generating a strip light beam according to an exemplary embodiment;

[0065] Figure 5C is a schematic diagram of transmission of light from a light source in a second recessed portion according to an exemplary embodiment of the present disclosure;

[0066] Figure 5D is a schematic cross-sectional structural diagram of a second recessed portion on a light emitting component according to an exemplary embodiment of the present disclosure;

[0067] Figure 5Eis a curve diagram showing a change in the depth h2 of the second recessed portion and the light flux loss according to an exemplary embodiment of the present disclosure;

[0068] Fig. 5F is a curve diagram showing a change in distribution density of second recessed portions and luminous flux loss according to an exemplary embodiment of the present disclosure;

[0069] Fig. 6A is a light transmission diagram when the third recessed portion is not provided on the light emitting component;

[0070] Figure 6B is a schematic diagram of light transmission in a third recessed portion on a light emitting component according to an exemplary embodiment of the present disclosure;

[0071] Figure 6C is a schematic diagram of light transmission in a third recessed portion on a light emitting component according to another exemplary embodiment of the present disclosure;

[0072] Fig.6D is a schematic diagram of the arrangement relationship between the third recessed portion and the pixel unit on the light emitting component according to an exemplary embodiment of the present disclosure;

[0073] Fig. 6E is a curve showing the relationship between the spacing between the third recessed portions and the peak brightness of light emitted from the lower end surface of the light guide plate according to an exemplary embodiment of the present disclosure;

[0074] Fig. 6F is a curve showing a relationship between a depth h3 between the third recessed portions and a peak brightness of light emitted from a lower end surface of a light guide plate according to an exemplary embodiment of the present disclosure;

[0075] Fig. 7A is a schematic structural diagram of a light source on a light emitting assembly according to an exemplary embodiment of the present disclosure;

[0076] Figure 7B is a schematic structural diagram of a light source on a light emitting assembly according to another exemplary embodiment of the present disclosure;

[0077] Fig. 8A is a structural schematic diagram of a light shielding component on a display device according to an exemplary embodiment of the present disclosure;

[0078] Figure 8B is a structural schematic diagram of a light shielding component on a display device according to another exemplary embodiment of the present disclosure;

[0079] Fig. 9 is a schematic diagram of a planar structure of a display device according to an exemplary embodiment of the present disclosure;

[0080] Fig.10is a schematic diagram of a planar structure of a display device according to an exemplary embodiment of the present disclosure;

[0081] Fig.11 is a flow chart of a method for manufacturing a display device according to an exemplary embodiment of the present disclosure;

[0082] Figures 12A to 12D 4 is a schematic diagram of a manufacturing process of a first recessed portion of a display device according to an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0083] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0084] It should be noted that in the drawings, the size and relative size of the elements may be exaggerated for the purpose of clarity and / or description. Thus, the size and relative size of each element are not necessarily limited to the size and relative size shown in the drawings. In the specification and drawings, the same or similar reference numerals indicate the same or similar parts.

[0085] When an element is described as being "on" another element, "connected to" another element, or "bound to" another element, the element may be directly on the other element, directly connected to the other element, or directly bound to the other element, or there may be an intermediate element. However, when an element is described as being "directly on" another element, "directly connected to" another element, or "directly bound to" another element, there is no intermediate element. Other terms and / or expressions used to describe the relationship between elements should be interpreted in a similar manner, for example, "between..." versus "directly between...", "adjacent" versus "directly adjacent" or "on..." versus "directly on...", etc. In addition, the term "connection" may refer to a physical connection, an electrical connection, a communication connection, and / or a fluid connection. In addition, the X-axis, the Y-axis, and the Z-axis are not limited to the three axes of a rectangular coordinate system, and may be interpreted in a broader sense. For example, the X-axis, the Y-axis, and the Z-axis may be perpendicular to each other, or may represent different directions that are not perpendicular to each other. For the purpose of this disclosure, "at least one of X, Y, and Z" and "at least one selected from the group consisting of X, Y, and Z" may be interpreted as only X, only Y, only Z, or any combination of two or more of X, Y, and Z such as XYZ, XYY, YZ, and ZZ. As used herein, the term "and / or" includes any and all combinations of one or more of the listed associated items.

[0086] It should be noted that, although the terms "first", "second", etc. may be used herein to describe various parts, components, elements, regions, layers and / or parts, these parts, components, elements, regions, layers and / or parts should not be limited by these terms. Instead, these terms are used to distinguish one part, component, element, region, layer and / or part from another. Thus, for example, the first part, first member, first element, first region, first layer and / or first part discussed below may be referred to as the second part, second member, second element, second region, second layer and / or second part without departing from the teachings of the present disclosure.

[0087] For ease of description, spatial relational terms, such as "upper", "lower", "left", "right", etc., may be used herein to describe the relationship of one element or feature to another element or feature as shown in the figure. It should be understood that the spatial relational terms are intended to cover other different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the figure is turned upside down, elements described as "below" or "beneath" other elements or features will be oriented "above" or "above" the other elements or features.

[0088] It should be noted that, in this article, "the same layer" refers to a layer structure formed by using the same film-forming process to form a film layer for forming a specific pattern, and then using the same mask to pattern the film layer through a single composition process. Depending on the specific pattern, a single composition process may include multiple exposure, development or etching processes, and the specific pattern in the formed layer structure may be continuous or discontinuous. That is, multiple elements, components, structures and / or parts located in the "same layer" are made of the same material and are formed through the same composition process. Usually, multiple elements, components, structures and / or parts located in the "same layer" have approximately the same thickness.

[0089] Those skilled in the art should understand that, in this article, unless otherwise specified, the expression "height" or "thickness" refers to the dimension of the surface of each film layer arranged perpendicular to the display substrate, that is, the dimension along the light emitting direction of the display substrate, or the dimension along the normal direction of the display device.

[0090] In this document, directional expressions "first direction" and "second direction" are used to describe different directions along the pixel area, for example, the longitudinal direction and the transverse direction of the pixel area, or the row direction and the column direction of the sub-pixel arrangement. It should be understood that such expressions are only exemplary descriptions and are not limitations of the present disclosure.

[0091] The transistors used in the embodiments of the present disclosure can all be thin film transistors or field effect transistors or other devices with the same characteristics. Since the source and drain of the thin film transistor used here are symmetrical, the source and drain can be interchanged. In the embodiments of the present disclosure, the transistor may include a gate, a first electrode and a second electrode, wherein the first electrode may represent one of the source and the drain, and the second electrode may represent the other of the source and the drain. In the following examples, the case of a P-type thin film transistor used as a driving transistor is mainly described, and other transistors have the same or different types as the driving transistor according to the circuit design. Similarly, in other embodiments, the driving transistor may also be shown as an N-type thin film transistor.

[0092] Herein, the expression "PPI" (i.e., Pixels Per Inch) refers to pixel density, which represents the number of pixels set per inch. Generally, the higher the PPI value, the higher the density at which the display device can display images.

[0093] Some exemplary embodiments of the present disclosure provide a display device, the display device comprising: a substrate; a reflective component, arranged at one side of the substrate, the reflective component comprising an upper end face of the reflective component away from the substrate, the upper end face of the reflective component being provided with a plurality of protrusions, a first angle θ1 being formed between a side tangent of the protrusion and the upper end face of the reflective component, the side tangent being a tangent of a side between a lowest point and a highest point of the protrusion at a midpoint; a display component, arranged at a side of the reflective component away from the substrate, the display component comprising a liquid crystal layer having a first refractive index n1; and a light-emitting component, arranged at the display component. On a side away from the substrate, the light-emitting component includes: a light guide plate, the light guide plate having a second refractive index n2, the light guide plate including a peripheral side surface of the light guide plate and an upper surface of the light guide plate away from the substrate, the upper surface of the light guide plate is provided with a plurality of first recessed portions recessed toward the substrate, and a second angle θ2 is formed between the oblique side surface of the first recessed portion facing the peripheral side surface of the light guide plate and the upper surface of the light guide plate; a light source is arranged opposite to the peripheral side surface of the light guide plate, the light source emits light toward the peripheral side surface of the light guide plate, and the light has a third angle θ3 with the peripheral side surface of the light guide plate; wherein the second angle θ2 satisfies the following relationship:

[0094]

[0095] According to the display device of the embodiment of the present disclosure, the light guide plate is made of glass material, which can be used in outdoor high temperature environments and ultraviolet light irradiation environments, and the problem of yellowing of the light guide plate will not occur. In addition, by setting the relationship between the first angle of the raised portion and the second angle and the third angle of the light, the light-emitting efficiency of the light guide plate is effectively improved, and the contrast and display uniformity of the display device are improved.

[0096] Figure 1A is a schematic plan view of a display substrate according to an exemplary embodiment of the present disclosure. Figure 1B FIG. 1 is a schematic diagram of a cross-sectional structure of a display substrate along a BB section line of FIG. 1A according to an exemplary embodiment of the present disclosure. Figure 1C FIG. 1 is a schematic diagram of a cross-sectional structure of a display substrate along the BB section line of FIG. 1A according to another exemplary embodiment of the present disclosure.

[0097] like Figures 1A to 1C As shown, the display device 100 according to the embodiment of the present disclosure includes a base substrate 10 , a reflective component 20 , a display component 30 and a light emitting component 40 .

[0098] like Figure 1AAs shown, the display device may include a display area AA and a non-display area NA. The display area AA may be an area where a pixel unit PX displaying an image is disposed. Each pixel unit PX will be described later. The non-display area NA is an area where a pixel unit PX is not disposed, that is, it may be an area where an image is not displayed. The non-display area NA corresponds to a frame in the final display device, and the width of the frame may be determined based on the width of the non-display area NA.

[0099] The display area AA may have various shapes. For example, the display area AA may be provided in various shapes such as a polygon (e.g., a rectangle) of a closed shape including straight sides, a circle, an ellipse, etc. including curved sides, and a semicircle, a semiellipse, etc. including straight sides and curved sides. In the embodiment of the present disclosure, the display area AA is provided as an area having a quadrilateral shape including straight sides, and it should be understood that this is merely an exemplary embodiment of the present disclosure, and not a limitation of the present disclosure.

[0100] The non-display area NA may be disposed at least one side of the display area AA. In an embodiment of the present disclosure, the non-display area NA may surround the periphery of the display area AA. In an embodiment of the present disclosure, the non-display area NA may include a transverse portion extending in the first direction X and a longitudinal portion extending in the second direction Y.

[0101] The pixel unit PX is disposed in the display area AA. The pixel unit PX is the smallest unit for displaying an image and may be disposed in plurality. For example, the pixel unit PX may include a light emitting device that emits white light and / or color light.

[0102] The pixel unit PX may be provided in plurality to be arranged in a matrix form along rows extending in the first direction X and columns extending in the first direction Y. However, the embodiments of the present disclosure do not specifically limit the arrangement form of the pixel unit PX, and the pixel unit PX may be arranged in various forms. For example, the pixel unit PX may be arranged such that a direction inclined relative to the first direction X and the first direction Y becomes a column direction, and such that a direction intersecting the column direction becomes a row direction.

[0103] That is, the plurality of pixel units PX are arranged in an array along the first direction X and the second direction Y to form a plurality of rows of pixel units and a plurality of columns of pixel units.

[0104] A pixel unit PX may include a plurality of sub-pixels. For example, a pixel unit PX may include three sub-pixels, namely a first sub-pixel SP1, a second sub-pixel SP2, and a third sub-pixel SP3. For example, the first sub-pixel SP1 may be a red sub-pixel, the second sub-pixel SP2 may be a green sub-pixel, and the third sub-pixel SP3 may be a blue sub-pixel.

[0105] It should be noted that, in the embodiments of the present disclosure, the number of sub-pixels included in a pixel unit is not particularly limited and is not limited to the above three.

[0106] like Figure 1B and Figure 1C As shown, the display device 100 includes a base substrate 10, a reflective component 20, a display component 30, and a light emitting component 40 arranged in a stacked structure. Specifically, the reflective component 20 is arranged on one side of the base substrate 10, the display component 30 is arranged on the end of the reflective component 20 away from the base substrate, and the light emitting component 40 is arranged on the end of the display component 30 away from the base substrate. In addition, a touch component 50 is also arranged on the end of the light emitting component 40 away from the base substrate. Exemplarily, the base substrate 10 can be, for example, a glass substrate.

[0107] like Figure 1B As shown, in one embodiment of the present disclosure, a frame pasting process is adopted between the touch component 50 and the light emitting component 40. For example, the touch component 50 is in a flat plate shape, and the touch component 50 is respectively bonded to the light emitting component 40 at the peripheral sides of the flat plate, for example, by using OCR adhesive, and the middle position of the touch component 50 at the flat plate is filled with air or other filling medium.

[0108] like Figure 1C As shown, in another embodiment of the present disclosure, a full bonding process is adopted between the touch component 50 and the light emitting component 40. For example, a bonding adhesive 60 is filled between the touch component 50 and the light emitting component to fully bond the touch component to the light emitting component.

[0109] Combine the following FIG. 2A to FIG. 8B The various structures of the display device according to the embodiment of the present disclosure are described in detail.

[0110] Figure 2A is a schematic cross-sectional structural diagram of a reflective assembly according to an exemplary embodiment of the present disclosure. Figure 2B FIG. 4 is a schematic diagram of a light path entering a liquid crystal layer through a reflective component according to an exemplary embodiment of the present disclosure. Figure 2C is a schematic diagram of the surface morphology of a reflective component according to an exemplary embodiment of the present disclosure.

[0111] like Figure 2A and Figure 2B As shown, the reflective component 20 is arranged on one side of the base substrate 10, and the reflective component 20 includes a reflective component upper end surface 20A away from the base substrate, and a plurality of protrusions 21 are arranged on the reflective component upper end surface, and a first angle θ1 is formed between the side tangent of the protrusion 21 and the reflective component upper end surface 20A. The side tangent is a tangent of the side between the lowest point and the highest point of the protrusion at the midpoint position.

[0112] The upper end surface 20A of the reflective component may, for example, refer to a plane on a side away from the substrate, on which a plurality of protrusions 21 facing away from the substrate are arranged. The protrusions 21 may, for example, be protrusions in the shape of a spherical crown, and a first angle θ1 is formed between the tangent of the side of the protrusion and the upper end surface of the reflective component. The lowest point of the protrusion 21 is 21A, the highest point of the protrusion 21 is 21B, the midpoint of the side between the lowest point and the highest point is 21C, the tangent of the side at the position of the midpoint 21C is the side tangent, and the angle between the side tangent and the upper end surface 20A of the reflective component may, for example, be the angle between the tangent at the position of the midpoint of the side corresponding to the cross section of the protrusion and the upper end surface of the reflective component corresponding to the cross section of the protrusion.

[0113] Exemplarily, the range of the first angle θ1 is: 5°≤θ1≤15°, and the raised portions 21 are irregularly arranged on the upper end surface of the reflective component, so as to produce diffuse reflection of the light incident on the upper end surface of the reflective component, thereby ensuring that more uniform reflected light can be seen on the display device. For example, by setting the first angle θ1 within the above range, it can be ensured that the reflectivity uniformity of the reflective component is greater than or equal to 85%.

[0114] like Figure 2B As shown, the protrusion 21 on the upper end surface 20A of the reflective component is circular or approximately circular, thereby ensuring that the protrusion 21 has a good diffuse reflection effect.

[0115] In an embodiment of the present disclosure, the display component 30 is disposed on a side of the reflective component 20 away from the base substrate 10 , and the display component 30 includes a liquid crystal layer 31 having a first refractive index n1.

[0116] The liquid crystal layer 31 of the display component includes a plurality of pixel units arranged in an array along a first direction X and a second direction Y, wherein the first direction X and the second direction Y intersect, for example, the first direction X is perpendicular to the second direction Y. Each of the plurality of pixel units includes a plurality of sub-pixels arranged in sequence in the first direction, and the length direction of each sub-pixel extends along the second direction. For example, the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B are arranged in sequence in the first direction, and the length directions of the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B are parallel to the second direction Y.

[0117] like Figure 2BAs shown, when light is incident from the upper side of the display component into the liquid crystal layer 31, it is refracted by the liquid crystal 31 layer and reaches the protrusion 21, and then is reflected and finally emitted from the side of the display component away from the substrate. The light path of light incident from the side of the display component away from the substrate, passing through the liquid crystal layer 31 to the reflective component 20, and then re-entering the liquid crystal layer 31 after reflection and emitting from the side of the display component away from the substrate is as follows: Figure 2B As shown. Wherein, θ0 is the incident angle of the light incident on the liquid crystal layer of the display component, n0 is the refractive index of the medium on the side of the display component away from the substrate. θ1 is the first angle between the side tangent of the protrusion 21 and the upper end surface of the reflective component, and n1 is the refractive index of the liquid crystal layer.

[0118] like Figure 2C As shown, a schematic diagram of the surface morphology of the reflective component 20, a plurality of protrusions are arranged on the side of the reflective component away from the substrate, thereby achieving diffuse reflection of the incident light.

[0119] Figure 3A is a schematic cross-sectional structural diagram of a light emitting assembly according to an exemplary embodiment of the present disclosure. Figure 3B Schematic diagram of the light path after the light source of the light emitting assembly enters the light guide plate according to the exemplary embodiment of the present disclosure. Figure 3C is a schematic diagram of a planar structure of a light emitting component according to an exemplary embodiment of the present disclosure. Figure 3D It is a schematic diagram of the three-dimensional structure of a light-emitting component from one viewing angle according to an exemplary embodiment of the present disclosure. Figure 3E is a schematic diagram of the three-dimensional structure of the light-emitting component from another viewing angle according to an exemplary embodiment of the present disclosure.

[0120] The light emitting component 40 is disposed on a side of the display component 30 away from the base substrate 10. Figure 3A As shown, the light emitting assembly 40 includes: a light guide plate 41 and a light source 42. In some embodiments of the present disclosure, the light guide plate 41 may be, for example, a circular plate or a polygonal plate, such as a pentagonal plate. The light guide plate 41 includes an upper surface 41A and a lower surface 41B of the light guide plate that are arranged opposite to each other, and a peripheral side surface 41C of the light guide plate located on the peripheral side of the light guide plate. The upper surface 41A of the light guide plate is a side away from the base substrate 10, and the lower surface 41B of the light guide plate is a side close to the base substrate 10.

[0121] The light source 42 is disposed on the peripheral side surface 41C of the light guide plate, and may be disposed on, for example, only a portion of the peripheral side surface of the light guide plate, or may be disposed on the entire peripheral side surface of the light guide plate.

[0122] like FIG. 3A to FIG. 3E As shown, the light guide plate 41 may be in the shape of a quadrilateral plate, such as a rectangular plate.

[0123] The orthographic projection of the light guide plate 41 on the base substrate is a quadrilateral, for example Figure 3C As shown, the orthographic projection of the light guide plate on the substrate is a rectangle.

[0124] like Figure 3C and Figure 3D As shown, the light guide plate 41 has four peripheral side surfaces of the light guide plate, namely, a first peripheral side surface 41C1 and a second peripheral side surface 41C2 that are arranged opposite to each other, and a third peripheral side surface 41C3 and a fourth peripheral side surface 41C4 that are arranged opposite to each other, and the third peripheral side surface 41C3 and the fourth peripheral side surface 41C4 are respectively connected to and perpendicular to the first peripheral side surface 41C1 and the second peripheral side surface 41C2, so that the light guide plate 41 forms a rectangle.

[0125] The light source 42 is disposed opposite to the first peripheral side surface 41C1 and the second peripheral side surface 41C2 respectively.

[0126] like FIG. 3C to FIG. 3E As shown, the upper surface 41A of the light guide plate 41 includes: a first area A1, the orthographic projection of the first area A1 on the base substrate partially overlaps with the orthographic projection of the liquid crystal layer 31 of the display component 30 on the base substrate; and a second area A2, the second area A2 is located between the first area A1 and the peripheral side surface 41C of the light guide plate. For example, the first area A1 is the area close to the center of the upper surface 41A of the light guide plate. The second area A2 is the area on both sides of the first area A1, such as Figure 3C As shown, the two second areas are respectively located on both sides of the first area.

[0127] The upper surface 41A of the light guide plate is provided with a plurality of first recessed portions 411 recessed toward the substrate, and the first recessed portions 411 have a second angle θ2 formed between the oblique side surfaces facing the peripheral side surfaces of the light guide plate and the upper surface of the light guide plate. Furthermore, the first recessed portions 411 are provided in the first region A1.

[0128] The light source 42 emits light toward the peripheral side surface 41C of the light guide plate, and the light and the peripheral side surface of the light guide plate form a third angle θ3. Figure 3B As shown, the range of the third angle θ3 between the light emitted by the light source 42 and the peripheral side surface 41C of the light guide plate is: 0°≤θ3≤60°. In this embodiment, the third angle between the light emitted by the light source and the peripheral side surface of the light guide plate can be, for example, Figure 3B The angle of incidence from the side surface of the light guide plate is biased upward, or it can be from Figure 3B The angle of incidence is biased downward on the side surface of the light guide plate.

[0129] like Figure 3A and Figure 3BAs shown, the light guide plate 41 has a second refractive index n2. The light guide plate 41 can be made of glass material, and by doping the glass with high refractive particles such as titanium dioxide, the second refractive index n2 of the light guide plate is within the range of 1.7 to 2.1. By using glass material to make the light guide plate, problems such as yellowing of the display device in normal use can be avoided. At the same time, the second refractive index of the light guide plate is set within the above range to ensure that the light guide plate has a good refractive effect on the light incident from the light source.

[0130] A plurality of first recessed portions 411 are disposed on the upper surface 41A of the light guide plate. The first recessed portions 411 have a second angle θ2 formed between their oblique side surfaces facing the peripheral side surface of the light guide plate and the light guide plate.

[0131] The second angle θ2 satisfies the following relationship:

[0132]

[0133] A medium M is disposed on the side of the light guide plate 41 away from the base substrate. For example, the medium may be air or adhesive. Depending on the medium, the refractive index n of the medium M is m For example, when the touch component uses a frame sticker, the medium is air, then n m =n air =1, when the touch component is fully bonded, the medium is OCA bonding adhesive, then the refractive index of the medium is n m In the range of 1.4 to 1.52.

[0134] like Figure 3B As shown, before the light from the light source 42 enters the light guide plate 41, there is a third angle θ3, and after entering the light guide plate, the incident angle after refraction is θ 31 , and then the total reflection occurs at the lower end of the light guide plate, and then the total reflection occurs at the upper end of the light guide plate, and the reflection angle is θ 32 , because the transmission angle is greater than the critical angle of total reflection, as shown in the following formula (1):

[0135]

[0136] When the light encounters the first recessed portion 411, it is totally reflected at the oblique side surface of the first recessed portion 411 and transmitted to the lower end surface 41B of the light guide plate. The transmission angle θ 33 The front light angle is smaller than the total reflection angle and enters the display component and the reflective component. 33 The following formula (2) is satisfied:

[0137]

[0138] Since the front light emission angle is consistent with the required angle of the reflective component, that is, formula (3):

[0139] n2*sinθ 33 = sinθ0

[0140] According to the above formulas (1), (2), and (3), it can be concluded that the second angle θ2 between the oblique side surface of the first recessed portion facing the peripheral side surface of the light guide plate and the upper end surface of the light guide plate satisfies the following formula (4):

[0141]

[0142] By making the second angle θ2 satisfy the above formula, it can be ensured that the light emitting assembly 40 can refract the light well, thereby ensuring that the light source of the display device has good display uniformity.

[0143] In some embodiments of the present disclosure, due to the provision of the first recessed portion 411, the light incident from the peripheral side 41C of the light guide plate is totally reflected at the lower end surface 41B of the light guide plate, the upper end surface 41A of the light guide plate, and the inclined surface of the first recessed portion 411, and the reflection calculation process does not involve n m , but the condition for total reflection is n2>n m In this embodiment, by setting m <n2, thereby achieving the purpose of total reflection of light in the light guide plate, thereby improving display uniformity.

[0144] In the embodiment of the present disclosure, the second angle θ2 satisfies: 35°≤θ2≤50°

[0145] In some embodiments of the present disclosure, the refractive index of the liquid crystal layer 31 may be, for example, n1=1.5.

[0146] In some exemplary embodiments of the present disclosure, the distribution density ρ of the first recessed portion 411 in the first area A1 gradually increases from close to the peripheral side surface 41C of the light guide plate toward a direction away from the peripheral side surface of the light guide plate. By setting the density distribution of the first recessed portion 411, the first recessed portion 411 of the light guide plate 41 at a position away from the light source can refract more light, thereby achieving better brightness uniformity, for example, making the brightness uniformity reach more than 80%, so that the display device has a better display effect.

[0147] In some exemplary embodiments of the present disclosure, the first recessed portion 411 includes a quadrangular pyramid-shaped recessed portion, a cone-shaped recessed portion, or a truncated cone-shaped recessed portion. In some optional embodiments, the first recessed portion 411 also includes recessed portions of other shapes.

[0148] Figure 4A is a schematic structural diagram of a first recessed portion on a light emitting component according to an exemplary embodiment of the present disclosure. Figure 4Bis a schematic structural diagram of a first recessed portion on a light emitting component according to another exemplary embodiment of the present disclosure. Figure 4C 4 is a curve showing the relationship between the second angle and the brightness of light emitted from the lower end surface of the light guide plate according to an exemplary embodiment of the present disclosure. Figure 4D 4 is a curve showing the relationship between the second angle and the light output peak angle of the lower end surface of the light guide plate according to an exemplary embodiment of the present disclosure. Figure 4E 4 is a curve showing the relationship between the depth of the first recessed portion and the brightness of light emitted from the lower end surface of the light guide plate according to an exemplary embodiment of the present disclosure. Figure 4F is a distribution density curve of the first recessed portions on the light guide plate according to an exemplary embodiment of the present disclosure. Figure 4G is a schematic structural diagram of a first recessed portion on a light emitting component according to an exemplary embodiment of the present disclosure. Figure 4H is a schematic structural diagram of a first recessed portion on a light emitting component according to another exemplary embodiment of the present disclosure.

[0149] like Figure 4A and Figure 4B As shown, the first recessed portion 411 includes a quadrangular pyramid-shaped recessed portion, and the quadrangular pyramid-shaped recessed portion includes: a first oblique side surface 4111, facing the first peripheral side surface 41C1. A second oblique side surface 4112, arranged opposite to the first oblique side surface 4111, and facing the second peripheral side surface 41C2. A third oblique side surface 4113, located between the first oblique side surface 4111 and the second oblique side surface 4112, facing the third peripheral side surface 41C3. A fourth oblique side surface 4114, arranged opposite to the third oblique side surface 4113, and facing the fourth peripheral side surface 41C4. The first oblique side surface 4111 and the second oblique side surface 4112 respectively form the second angle θ2 with the upper end surface 41A of the light guide plate. The third oblique side surface and the fourth oblique side surface respectively form the fourth angle θ4 with the upper end surface of the light guide plate. The second angle θ2 is less than the fourth angle θ4, and the fourth angle θ4 is ≤ 80°.

[0150] like Figure 4A As shown, the first recessed portion 411 comprises a quadrangular pyramid-shaped recessed portion, wherein the top portion of the quadrangular pyramid-shaped recessed portion is cut, i.e., a prism-shaped structure. Figure 4B As shown, the first recessed portion 411' is in the shape of a quadrangular pyramid, that is, the top of the quadrangular pyramid-shaped recessed portion is not cut off, and has a pyramid top facing the substrate side. The shape of the first recessed portion can be set according to actual needs, and the second angle between the oblique side surface of the first recessed portion facing the axial side surface of the light guide plate and the upper end surface of the light guide plate needs to satisfy the above formula (4) to ensure that the display device has good uniformity and a higher display effect.

[0151] According to an embodiment of the present disclosure, by setting the second angle θ2 to be smaller than the fourth angle θ4, since the first oblique side surface 4111 and the second oblique side surface 4112 respectively face the light incident direction L, the first oblique side surface 4111 and the second oblique side surface 4112 can have a larger contact area with the light emitted by the light source, so that the lower end surface 41A of the light guide plate of the light-emitting component 40 can form a small-angle symmetrical light output, and the light output angle on the upper end surface of the light guide plate is greater than 80°, thereby greatly improving the contrast of the user facing the display device, and at the same time reducing the light output difference of the left and right viewing angles when the user sees the display device, thereby making the display device more uniform and effectively improving the brightness of the display device.

[0152] In the embodiment of the present disclosure, the second angle θ2 mainly determines the light output angle of the lower end surface 41A of the light guide plate. Figure 4C and Figure 4D As shown, as the second angle θ2 increases, the light output peak angle of the lower end surface 41A of the light guide plate gradually decreases. According to the light source direction L, by setting the relationship between the second angle θ2 and the fourth angle θ4 to θ2≤θ4≤80°, by appropriately increasing the fourth angle, the contact area between the light and the first recessed portion can be increased, which is beneficial to improving the brightness.

[0153] like Figure 4A As shown, there is a connecting chamfer R between the oblique side surfaces of the four-sided pyramidal recess. Since the connecting chamfer R will cause the contact area between the first inclined surface 4111 and the second inclined surface 4112 and the incident light of the light source to decrease, it will cause the lighting ability of the first recess 411 to decrease. Therefore, the connecting chamfer R≤1.5um can ensure that the first recess has a good lighting effect.

[0154] like Figure 4E As shown, the peak brightness of the lower end surface 41B of the light guide plate changes with the height h1 of the quadrangular pyramid. As h1 increases, the peak brightness of the lower end surface of the light guide plate gradually increases. In the embodiment of the present disclosure, since the peak brightness of the lower end surface of the light guide plate increases with the increase of the height of the quadrangular pyramid, the depth of the quadrangular pyramid-shaped recessed portion toward the substrate is h1, where 3um≤h1≤8um.

[0155] In some embodiments of the present disclosure, the distribution density ρ of the first recessed portion is set to ensure that the first recessed portion 411 can significantly improve the display uniformity of the display device. Specifically, since the light source 42 is arranged on the peripheral side surface 41C of the light guide plate, as the light from the light source 42 enters the light guide plate 41, the brightness of the light decays. In order to improve the lighting effect of the first recessed portion 411, the distribution density value p of the first recessed portion 411 is designed to achieve a better lighting effect and improve the display uniformity of the display device.

[0156] For example, by calculating the dot pitch P of the first concave portion within the unit area S2 n Finally, the distribution density value ρ of the first concave part is determined. The dot spacing P of the first concave part n It refers to the distance between adjacent first recessed parts in the direction opposite to the light source. The dot pitch P of the first recessed parts within the unit area S2 m Calculated by formula (5):

[0157]

[0158] Among them, A n or B n A is the unilateral luminous flux of the light source at a certain distance from the side of the light guide plate. n For example, it can represent the unilateral luminous flux of the light source located on the first peripheral side of the light guide plate at a certain distance from the first peripheral side of the light guide plate, B n For example, it can represent the unilateral luminous flux of the light source located on the second peripheral side of the light guide plate at a certain distance from the second peripheral side of the light guide plate. K is the initial light-collecting efficiency of the first recessed portion, Z is the light-collecting capacity attenuation coefficient of the first recessed portion along the optical path, and the dot pitch P of the first recessed portion is n The number N of the first recessed portions per unit area is determined by formula (6):

[0159]

[0160] The dot distribution density ρ of the first concave portion is calculated by formula (7):

[0161]

[0162] Wherein, S1 is the opening area of ​​the first recessed portion, and S2 is the unit area.

[0163] According to the above steps, it can be concluded that the distribution density ρ of the first recessed portions 411 in the first area A1 gradually increases from the direction close to the peripheral side surface 41C of the light guide plate toward the direction away from the peripheral side surface 41C of the light guide plate, such as: Figure 4F As shown, the distribution density of the first concave portion changes in a trend as follows: the distribution density gradually increases from the first peripheral side surface 41C1 toward the second peripheral side surface 41C2, then reaches a maximum value at the midpoint between the first peripheral side surface 41C1 and the second peripheral side surface 41C2, and then gradually decreases from the midpoint to the second peripheral side surface 41C2. Thus, it can be ensured that the brightness uniformity reaches more than 83% when viewed from the upper side of the display device.

[0164] In some embodiments of the present disclosure, by setting the distribution density ρ of the first recessed portions within the range of 4%≤ρ≤10%, the brightness uniformity of the light-emitting component can be ensured and the display effect of the display on the device can be improved.

[0165] like Figure 4C As shown in FIG. 1 , the relationship curve between the light output brightness of the lower end surface of the light guide plate and the second angle is shown. As the second angle e2 decreases, for the same light output brightness, the receiving angle of the detector increases, resulting in a decrease in brightness uniformity. Figure 4D As shown in FIG. 1 , the relationship curve between the second angle and the peak light angle of the lower end surface of the light guide plate shows that as the second angle increases, the peak light angle of the lower end surface of the light guide plate decreases. In order to ensure better brightness uniformity, the second angle θ2 is set within the range of 35°≤θ2≤50°, thereby improving the display effect of the display device.

[0166] like Figure 4G As shown, the first recessed portion is a truncated cone-shaped recessed portion 411A, and the opening diameter of the truncated cone-shaped recessed portion 411A gradually decreases toward the substrate direction. The side generatrix of the truncated cone-shaped recessed portion and the upper end surface of the light guide plate form a second angle θ2, that is, the truncated cone-shaped recessed portion is cut according to the central axis, and the corresponding cross-sectional hypotenuse is the generatrix, and the line of the cross-section on the upper end surface of the light guide plate is the upper end surface of the light guide plate, as shown in FIG. Figure 4G As shown, a second angle θ2 is formed. In this embodiment, the bottom of the truncated cone recess is a plane parallel to the upper end surface of the light guide plate, so that the light emitted from the reflective component can be emitted through the bottom of the truncated cone recess, further improving the display uniformity.

[0167] like Figure 4H As shown, the first recessed portion is a conical recessed portion 411B, and the generatrix of the conical recessed portion 411B and the upper end surface of the light guide plate form the second angle θ2. In this embodiment, by setting the conical recessed portion, the brightness uniformity of the light emitting component can be improved compared with the truncated cone-shaped recessed portion.

[0168] In some optional embodiments of the present disclosure, the first recessed portion may further include an n-pyramid-shaped recessed portion or an n-prism-shaped recessed portion, and the oblique side surface of the n-pyramid-shaped recessed portion or the n-prism-shaped recessed portion facing the peripheral side surface of the light guide plate forms the second angle θ2 with the upper end surface of the light guide plate. For example, the n-pyramid-shaped recessed portion or the n-prism-shaped recessed portion may be applied to a structure in which the light guide plate is a regular n-gon, such as a regular pentagon, a regular hexagon, etc.

[0169] Figure 5A is a schematic structural diagram of a second recessed portion on a light emitting component according to an exemplary embodiment of the present disclosure. Figure 5B The diagram is a schematic diagram of a light source of a light emitting assembly generating a strip light beam according to an exemplary embodiment. Figure 5CSchematic diagram of transmission of light from a light source within a second recessed portion according to an exemplary embodiment of the present disclosure. Figure 5D 4 is a schematic diagram of the cross-sectional structure of a second recessed portion on a light-emitting component according to an exemplary embodiment of the present disclosure. Figure 5E is a curve diagram showing a change in the depth h2 of the second recessed portion and the luminous flux loss according to an exemplary embodiment of the present disclosure. Fig. 5F 4 is a curve diagram showing the variation of the distribution density of the second recessed portions and the luminous flux loss according to an exemplary embodiment of the present disclosure.

[0170] In some embodiments of the present disclosure, a plurality of second recessed portions 412 recessed toward the substrate are uniformly disposed in the second area A2 of the upper surface 41A of the light guide plate. Figure 5A As shown, the second area A2 is the area between the peripheral side surface 41C of the light guide plate and the first area A1, and the second recessed portions 412 are evenly arranged in the second area A2.

[0171] Since the light source 42 is arranged on the peripheral side surface 41C of the light guide plate, the light source 42 may be formed by, for example, a plurality of lighting lamps (such as LED lamps) arranged at intervals along the peripheral side surface of the light guide plate. Since there is a certain interval between the plurality of lighting lamps, and the light intensity of the central area of ​​the LED lamp is greater than the light intensity of other areas, if the light mixing is insufficient, a strip-shaped light beam may appear. Figure 5B As shown, the display effect is reduced. By setting the second recessed portion, the incident light of the light source can be mixed, thereby reducing or even eliminating the appearance of strip-shaped light beams and improving the display effect. Figure 5C As shown, when the light source emits light, it enters the second area A2 of the light guide plate 41 , and after the light enters the second recessed portion 412 , it is reflected to different directions, that is, the light is mixed by the second recessed portion 412 , thereby avoiding the appearance of strip-shaped light beams.

[0172] In some embodiments of the present disclosure, the second recess 412 comprises a spherical cap recess.

[0173] like Figure 5D As shown, the second recessed portion 412 is recessed in the second area A2 of the upper surface 41A of the light guide plate toward the base substrate 10 , so that the interface of the second recessed portion 412 is in an arc shape.

[0174] like Figure 5D As shown, the depth of the spherical cap recessed portion toward the substrate is h2, 1um≤h2≤9um, and the cross-sectional diameter of the spherical cap recessed portion is D, 18um≤D≤50um. The relationship between the radius Ro of the sphere corresponding to the spherical cap recessed portion and D and h2 is as follows:

[0175]

[0176] For example, Ro can be 40 um, from which the values ​​of h2 and D can be determined.

[0177] like Figure 5E As shown in the variation curve of the depth h2 of the spherical cap recess and the section diameter D, when the section diameter D increases and the depth h2 of the spherical cap recess increases, the luminous flux loss generated by the second recess gradually increases. Fig. 5F The distribution density of the spherical cap recessed portion and the luminous flux loss curve generated by the second recessed portion are shown in FIG. As the distribution density of the second recessed portion increases, the luminous flux loss gradually increases. When the distribution density of the spherical cap recessed portion is greater than 2%, the luminous flux loss exceeds 5%. By setting the distribution density value of the spherical cap recessed portion in the second region to be less than or equal to 2%, the luminous flux loss can be ensured to be less than or equal to 5%. In this way, the second recessed portion can be ensured to mix the light to prevent the appearance of a stripe beam. At the same time, since the second recessed portion will generate luminous flux loss when mixing the light, by setting the depth h2 of the second recessed portion, the cross-section diameter D and the distribution density of the second recessed portion within the above range, the luminous flux loss caused by the second recessed portion can be reduced while preventing the appearance of a stripe beam.

[0178] Fig. 6A This is a light transmission diagram when the third recessed portion is not provided on the light emitting component. Figure 6B It is a schematic diagram of light transmission in a third recessed portion on a light-emitting component according to an exemplary embodiment of the present disclosure. Figure 6C Schematic diagram of light transmission in a third recessed portion on a light-emitting component according to another exemplary embodiment of the present disclosure. Fig.6D It is a schematic diagram of the arrangement relationship between the third recessed portion and the pixel unit on the light-emitting component according to an exemplary embodiment of the present disclosure. Fig. 6E It is a curve showing the relationship between the spacing between the third recessed portions and the peak brightness of light emitted from the lower end surface of the light guide plate according to an exemplary embodiment of the present disclosure. Fig. 6F 3 is a curve showing the relationship between the depth h3 between the third recessed portions and the peak brightness of light emitted from the lower end surface of the light guide plate according to an exemplary embodiment of the present disclosure.

[0179] The light guide plate 41 includes a lower surface 41B of the light guide plate close to the substrate, which is arranged opposite to the upper surface 41A of the light guide plate, and a third recessed portion 413 is arranged on the lower surface 41B of the light guide plate, which is recessed away from the substrate. The third recessed portion 413 is used to increase the brightness of the light emitting component.

[0180] like Figure 3E and Fig. 6AAs shown, the third recessed portion 413 includes a V-shaped recessed portion, which is extended in the first direction X and arranged at intervals in the second direction Y. The V-shaped recessed portion is arranged to be recessed in a direction away from the base substrate 10, and the depth of the V-shaped recessed portion in the direction away from the base substrate is h3, 1um≤h3≤30um. The opening width of the V-shaped recessed portion in the second direction Y is W, 5um≤W≤30um.

[0181] When the third recessed portion 413 is not provided on the lower end surface 41B of the light guide plate, as shown in FIG. Fig. 6A As shown, light enters the light guide plate from the peripheral side of the light guide plate 41, and the light at a large angle cannot break through the total reflection and emit toward the lower end surface of the light guide plate, which will cause the peak brightness of the light emitted from the lower side of the light guide plate to decrease. In the embodiment of the present disclosure, by providing the third recessed portion 413, as shown in FIG. Figure 6B As shown, the totally reflected light at the lower end surface 41B of the light guide plate can be effectively destroyed, so that the light is emitted through the third recessed portion 413, thereby improving the peak brightness of the light emitted from the lower end surface 41B of the light guide plate. For example, compared with not setting the third recessed portion, setting the third recessed portion can increase the peak brightness of the light emitted by 15%. When the third recessed portion 413 of the lower end surface 41B of the light guide plate is filled with OCA adhesive, such as Figure 6C As shown, since the refractive index difference between the OCA adhesive and the light guide plate glass is small, the peak brightness of the light emitted from the lower end surface of the light guide plate is further increased. For example, compared with not setting the third recessed portion, setting the third recessed portion 413 and filling the third recessed portion 413 with the OCA adhesive can increase the peak brightness of the light emitted by 50% to 80%, thereby improving the display effect of the display device. The refractive index of the OCA adhesive is, for example, in the range of 1.4 to 1.52.

[0182] In some embodiments of the present disclosure, Fig.6D As shown, each pixel unit may include a plurality of sub-pixels, and the plurality of sub-pixels are arranged in sequence in a first direction X, for example, a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B are arranged in sequence, and the length direction of each sub-pixel is extended along a second direction Y. For example, the pixel unit may be arranged in a square shape, that is, the length PX and the width of the pixel unit are equal to the length Lp of the sub-pixel, and equal to three times the width W of the sub-pixel.

[0183] The opening width W of the V-shaped recess is less than or equal to half of the sub-pixel width, for example, if the sub-pixel width is Wp, then W≤1 / 2Wp. Each sub-pixel includes at least one V-shaped recess extending in the first direction in the length direction.

[0184] like Fig.6DAs shown, the spacing Pv between adjacent V-groove recesses satisfies W≤Pv≤Lp, Lp represents the length of the pixel unit in the second direction Y. In some specific embodiments, Pv≤1 / 3Lp, that is, one pixel unit may include three V-groove recesses extending in the first direction X.

[0185] Fig. 6E The graph of the change of the peak brightness of the light emitted from the lower end surface 41B of the light guide plate as the spacing Pv between the V-groove recesses changes is shown. As the spacing increases from 0um to 150um, the peak brightness of the light emitted from the lower end surface 41B of the light guide plate first increases slightly, and then gradually decreases at 50um, that is, the spacing Pv between adjacent V-groove recesses should be set to less than 50um to ensure good peak brightness of the light emitted.

[0186] Fig. 6F The graph shows the change curve of the peak brightness of the light emitted from the lower end surface of the light guide plate as the depth of the V-groove recess changes. As the depth h3 of the V-groove recess increases, the peak brightness of the light emitted from the lower end surface 41B of the light guide plate first gradually increases, and when h3 is 5um, the peak brightness of the light emitted from the lower end surface of the light guide plate remains unchanged, that is, when the depth h3 of the V-groove recess is ≥ 5um, the peak brightness of the light emitted from the lower end surface of the light guide plate can be kept at a relatively large value.

[0187] Fig. 7A is a schematic structural diagram of a light source on a light emitting assembly according to an exemplary embodiment of the present disclosure. Figure 7B is a schematic structural diagram of a light source on a light emitting assembly according to another exemplary embodiment of the present disclosure.

[0188] like Fig. 7A As shown, the light source 42 includes a single row of light sources 42A composed of a plurality of lighting lamps spaced apart along the peripheral side of the light guide plate. For example, the lighting lamps are LED lamps.

[0189] There is a spacing G between adjacent lighting lamps of the single-row light source 42A, and the spacing G satisfies the following relationship:

[0190] G=2×A×tanθ4

[0191] Wherein, A is the width of the peripheral side surface 41C of the light guide plate from the first area A1 , and θ4 is the refraction angle of the light beam of the lighting lamp after entering the light guide plate 41 .

[0192] Exemplarily, due to the narrow frame requirement of the display device, A≤5mm, G≤0.35mm is calculated by the above formula. Since the single-row light source is formed by using multiple illuminating lamps arranged at intervals, in order to avoid the appearance of strip light beams, the spacing G between the multiple illuminating lamps is reduced to achieve the above effect. While reducing the spacing G between the illuminating lamps, a second recessed portion is provided in the second area of ​​the upper end surface 41A of the light guide plate, thereby further avoiding the appearance of strip light beams.

[0193] In another embodiment of the present disclosure, Figure 7B As shown, the light source includes a plurality of single-row light sources 42B which are staggered along the peripheral side surface of the light guide plate. For example, two single-row light sources are used to stagger the lamps. The single-row light source is composed of a plurality of lamps which are spaced apart along the peripheral side surface of the light guide plate. The lamps of the plurality of single-row light sources are staggered so that the light emitted by the lamps of one of the single-row light sources can be incident on the light guide plate from between the intervals of the lamps of another single-row light source, thereby eliminating the strip light beam.

[0194] In this embodiment, there is a spacing G between adjacent lighting lamps of each single-row light source of the multi-row light source 42B, 0.35mm≤G≤0.9mm. Compared with a single-row light source, the use of multiple-row light sources can better avoid strip light beams, and the use of multiple-row light sources will cause the border width of the display device to be wider than the border width of a single-row light source.

[0195] Fig. 8A is a schematic structural diagram of a light shielding component on a display device according to an exemplary embodiment of the present disclosure. Figure 8B is a schematic structural diagram of a light shielding component on a display device according to another exemplary embodiment of the present disclosure.

[0196] In some embodiments of the present disclosure, the display device further includes: a light blocking component 70, located between the touch component 50 and the light emitting component 40, and the orthographic projection of the light blocking component 70 on the base substrate 10 is located within the orthographic projection of the second area A2 on the base substrate 10.

[0197] In some embodiments of the present disclosure, the display device further includes: an adhesive layer located between the touch component 50 and the light shielding component 40, and between the light shielding component 40 and the light emitting component 70, and the orthographic projection of the adhesive layer on the base substrate is located within the orthographic projection of the second region on the base substrate. The adhesive layer may be, for example, an OCA adhesive.

[0198] For example, when the touch component 50 and the light emitting component 40 are bonded by the frame bonding process, the OCA bonding adhesive 60 between the light emitting component 40 and the touch component 50 will refract the pipeline generated on the light emitting component, and a bright line located on the light source side of the light emitting component will be seen at a larger viewing angle. In order to avoid the appearance of the bright line, a light shielding component 70 is provided between the light emitting component 40 and the touch component 50 to improve the display effect of the display device at a large viewing angle.

[0199] like Fig. 8A As shown, in one embodiment, the light shielding assembly 70 includes: a shielding main board 71 arranged parallel to the upper surface of the light guide plate; and a curved portion 72 connected to the shielding main board, which is bent from the shielding main board 71 away from the peripheral side of the light guide plate toward 41C toward the upper surface 41A of the light guide plate. The curved portion 72 can prevent light from being emitted from the side of the OCA bonding adhesive, thereby eliminating bright lines of the display device at a large viewing angle.

[0200] like Figure 8B As shown, in another embodiment, the light shielding component 70' includes: a shielding main board 71' arranged parallel to the upper end surface of the light guide plate; a shielding sub-board 72' located between the shielding main board and the light guide plate, the orthographic projection of the shielding sub-board 72' on the base substrate 10 is located within the orthographic projection of the shielding main board 71' on the base substrate 10, and the shielding sub-board 72' is arranged close to the first area A1. The shielding sub-board 72' can prevent light from emitting from the side of the OCA bonding adhesive, thereby eliminating the bright line of the display device at a large viewing angle.

[0201] In some embodiments of the present disclosure, when the light emitting component and the touch component adopt a full bonding process, an adhesive layer is provided between the touch component and the light emitting component to bond the touch component and the light emitting component together, and the adhesive layer may be, for example, an OCA bonding adhesive 60. Since there is a large refractive index difference between the OCA bonding adhesive and the light guide plate, and a first recessed portion is provided on the upper surface of the light guide plate, the light emitted by the light source is totally reflected after entering the light guide plate, and is finally transmitted downward through the lower surface of the light guide plate to be emitted.

[0202] Fig. 9 is a schematic diagram of a planar structure of a display device according to an exemplary embodiment of the present disclosure.

[0203] like Fig. 9As shown, the light guide plate of the light emitting component 40A adopts a polygonal structure, and the positive projection of the light guide plate on the substrate is an n-gon, such as a regular hexagonal structure. The light guide plate 401A includes six peripheral side surfaces, and a light source 402A is correspondingly arranged on each peripheral side surface, and a plurality of first recessed portions 411 are arranged in the first area of ​​the upper end surface of the light guide plate, and the distribution density ρ of the first recessed portions 411 in the first area gradually increases from the direction close to the peripheral side surface of the light guide plate toward the direction away from the peripheral side surface of the light guide plate, that is, along the direction indicated by the arrow, the distribution density of the first recessed portions 411 gradually decreases. That is, from the peripheral side surface to the center position of the regular hexagon, the distribution density of the first recessed portions gradually increases.

[0204] Exemplarily, a plurality of second recesses are provided in the second region of the upper end surface of the light guide plate of the regular hexagonal light guide plate, and a plurality of third recesses are provided on the lower end surface of the light guide plate. The first recess may be, for example, an n-pyramid recess or an n-prism recess or a cone recess or a truncated cone recess.

[0205] Fig.10 is a schematic diagram of a planar structure of a display device according to an exemplary embodiment of the present disclosure.

[0206] like Fig.10 As shown, the light guide plate of the light emitting component 40B adopts a circular structure, and the orthographic projection of the light guide plate 401B on the substrate is a circle. The light guide plate 401B includes a circular peripheral side surface, and the light source 402B is arranged around the peripheral side surface of the light guide plate, and a plurality of first recessed portions 411 are arranged in the first area of ​​the upper end surface of the light guide plate, and the distribution density ρ of the first recessed portions 411 in the first area gradually increases from the direction close to the peripheral side surface of the light guide plate toward the direction away from the peripheral side surface of the light guide plate. That is, from the edge position of the circle to the center position of the circle, the distribution density of the first recessed portions gradually increases, that is, along the direction indicated by the arrow, the distribution density of the first recessed portions 411 gradually decreases.

[0207] Exemplarily, a plurality of second recesses are provided in the second region of the upper surface of the light guide plate of the regular hexagonal light guide plate, and a plurality of third recesses are provided on the lower surface of the light guide plate. The first recess may be, for example, a conical recess or a truncated cone recess.

[0208] The display device may include any device or product having a display function. For example, the display device may be a smart phone, a mobile phone, an e-book reader, a desktop computer (PC), a laptop PC, a netbook PC, a personal digital assistant (PDA), a portable multimedia player (PMP), a digital audio player, a mobile medical device, a camera, a wearable device (such as a head-mounted device, an electronic clothing, an electronic bracelet, an electronic necklace, an electronic accessory, an electronic tattoo, or a smart watch), a television, etc.

[0209] Fig.11 is a flowchart of a method for manufacturing a display device according to an exemplary embodiment of the present disclosure. Figures 12A to 12D 4 is a schematic diagram of a manufacturing process of a first recessed portion of a display device according to an exemplary embodiment of the present disclosure.

[0210] In another aspect of the present disclosure, a method for manufacturing a display device is provided, such as Fig.11 As shown, the method for manufacturing a display device includes operations S1 to S4.

[0211] In operation S1 , a base substrate is provided.

[0212] In operation S2, a reflective component is formed on one side of the base substrate, the reflective component including an upper end surface of the reflective component away from the base substrate, a plurality of protrusions are arranged on the upper end surface of the reflective component, a first angle θ1 is formed between a side tangent of the protrusion and the upper end surface of the reflective component, and the side tangent is a tangent of the side between the lowest point and the highest point of the protrusion at the midpoint position.

[0213] In operation S3, a display component is formed on a side of the reflective component away from the base substrate, wherein the display component includes a liquid crystal layer having a first refractive index n1.

[0214] In operation S4, a light-emitting component is formed on a side of the display component away from the base substrate, and the forming of the light-emitting component includes: forming a light guide plate, the light guide plate having a second refractive index n2, the light guide plate including a peripheral side surface of the light guide plate and an upper end surface of the light guide plate away from the base substrate, the upper end surface of the light guide plate is provided with a plurality of first recessed portions recessed toward the base substrate, the inclined side surfaces of the first recessed portions facing the peripheral side surface of the light guide plate have a second angle θ2 with the upper end surface of the light guide plate; a light source is formed at a relative position to the peripheral side surface of the light guide plate, the light source emits light toward the peripheral side surface of the light guide plate, and the light has a third angle θ3 with the peripheral side surface of the light guide plate.

[0215] The second angle θ2 satisfies the following relationship:

[0216]

[0217] Exemplarily, forming the light guide plate includes: forming a first area on the upper end surface of the light guide plate so that the orthographic projection of the first area on the substrate partially overlaps with the orthographic projection of the liquid crystal layer of the display component on the substrate; and forming a second area on the upper end surface of the light guide plate so that the second area is located between the first area and the peripheral side surface of the light guide plate; forming the first recessed portion in the first area by a first ion beam etching process, forming the second recessed portion in the second area, and forming the third recessed portion on the lower end surface of the light guide plate by a second ion beam etching process.

[0218] For example, a light guide plate is provided, and a first recessed portion is formed in the first region of the light guide plate by a first ion beam etching process, and a second recessed portion is formed in the second region. The ion beam in the first ion beam etching process for forming the first recessed portion forms a certain angle with the upper end surface of the light guide plate, and the angle is equal to the second angle θ2.

[0219] The ion beam in the first ion beam etching process for forming the second recessed portion is perpendicular to the upper end surface of the light guide plate.

[0220] like FIG. 12A to FIG. 12D As shown, the first ion beam includes an inclined ion beam in a first direction F1 and an inclined ion beam in a second direction F2, each first recess has a symmetry axis Z1, and the inclined surface of the first recess includes a first inclined surface Q1 and a second inclined surface Q2 which are mirror-symmetrically arranged relative to the symmetry axis Z1.

[0221] Forming the first recessed portion in the first region by a first ion beam etching process includes:

[0222] The first inclined surface Q1 of the first recessed portion is etched by an inclined ion beam in a first direction F1, and the second inclined surface Q2 of the first recessed portion is etched by an inclined ion beam in a second direction F2. The first direction F1 and the second direction F2 are mirror-symmetrical with respect to the symmetry axis Z1, and the first direction F1 forms a first angle θ with the upper end surface of the light guide plate. 21 The second direction F2 forms a second angle θ with the upper surface of the light guide plate 22 , and θ 21 =θ 22 =θ2.

[0223] For example, Fig. 12A As shown, in the first region A1, the first region of the upper surface of the light guide plate is etched by the first tilted ion beam BP1, and the angle between the tilted ion beam BP1 in the first direction F1 and the upper surface of the light guide plate is θ21. Fig. 12BAs shown, after the first etching is completed, a portion 4110 of the first recessed portion is formed, that is, a first inclined surface Q1 of the first recessed portion is formed, and a second angle θ2 is formed between the inclined surface facing the peripheral side surface of the light guide plate and the upper surface of the light guide plate. Fig. 12C As shown, the second direction F2 of the tilted ion beam BP2 is continued to be used to etch other parts of the first recessed portion, for example, to etch the inclined surface facing the other peripheral side surface of the light guide plate, and the second inclined surface Q2 facing the first recessed portion is etched by the second direction of the tilted ion beam BP2. The angle between the second direction of the tilted ion beam BP2 and the upper end surface of the light guide plate is θ 22 .like Fig.12D As shown, after the second inclined surface W2 of the first recessed portion is etched, a first recessed portion 411 is formed, and each inclined side surface of the first recessed portion 411 facing the peripheral side surface of the light guide plate has a second angle θ2 with the upper end surface of the light guide plate.

[0224] In some optional embodiments, when the first recessed portion has multiple (for example, 4 or more) inclined surfaces, multiple first inclined ion beams can be used to etch the first recessed portion, so that each inclined side surface of the first recessed portion facing the upper peripheral side surface of the light guide plate has a second angle θ2 with the upper end surface of the light guide plate.

[0225] While forming the first recessed portion, the second recessed portion may be etched in the second region by an ion beam perpendicular to the upper end surface of the light guide plate. The second recessed portion may also be formed after the first recessed portion is formed. After the first recessed portion and the second recessed portion are formed, a third recessed portion is formed on the lower end surface of the light guide plate by a second ion beam etching process, thereby completing the manufacture of the light guide plate.

[0226] In an embodiment of the present disclosure, the process of forming the third recessed portion is similar to the process of forming the first recessed portion. Exemplarily, the second ion beam includes an inclined ion beam in a third direction and an inclined ion beam in a fourth direction, the third recessed portion has a symmetry plane, and the third recessed portion includes a first inclined surface and a second inclined surface that are mirror-symmetrically arranged relative to the symmetry plane, for example, a V-groove recessed portion is formed by the first inclined surface and the second inclined surface. Forming the third recessed portion on the lower end surface of the light guide plate by the second ion beam etching process includes: etching the first inclined surface of the third recessed portion by an inclined ion beam in a third direction, etching the second inclined surface of the third recessed portion by an inclined ion beam in a fourth direction, and the third direction and the fourth direction are mirror-symmetrically arranged relative to the symmetry plane.

[0227] As used herein, the terms "substantially," "about," "approximately," "roughly," and other similar terms are used as terms of approximation rather than as terms of degree, and they are intended to account for the inherent deviations in measured or calculated values ​​that would be recognized by one of ordinary skill in the art. Taking into account factors such as process fluctuations, measurement problems, and errors associated with the measurement of a particular quantity (i.e., limitations of the measurement system), "about" or "approximately" as used herein include the stated value and mean that the particular value is within an acceptable range of deviation as determined by one of ordinary skill in the art. For example, "approximately" can mean within one or more standard deviations, or within ±30%, ±20%, ±10%, ±5% of the stated value.

[0228] Although some embodiments of the overall technical concept of the present disclosure have been shown and described, those skilled in the art will appreciate that changes may be made to these embodiments without departing from the principles and spirit of the overall technical concept, and the scope of the present disclosure is defined by the claims and their equivalents.

Claims

1. A display device, wherein: include: substrate substrate; A reflective component is arranged on one side of the substrate, the reflective component comprises an upper end surface of the reflective component away from the substrate, a plurality of protrusions are arranged on the upper end surface of the reflective component, a first angle θ1 is formed between a side tangent of the protrusion and the upper end surface of the reflective component, and the side tangent is a tangent of the side between the lowest point and the highest point of the protrusion at the midpoint position; A display component is arranged on a side of the reflective component away from the base substrate, and the display component includes a liquid crystal layer with a first refractive index n1; A light emitting component is arranged on a side of the display component away from the base substrate, The light emitting component comprises: A light guide plate, the light guide plate having a second refractive index n2, the light guide plate comprising a peripheral side surface of the light guide plate and an upper surface of the light guide plate away from the substrate, the upper surface of the light guide plate is provided with a plurality of first recessed portions recessed toward the substrate, and a second angle θ2 is formed between an oblique side surface of the first recessed portion facing the peripheral side surface of the light guide plate and the upper surface of the light guide plate; A light source is arranged opposite to the peripheral side surface of the light guide plate, the light source emits light toward the peripheral side surface of the light guide plate, and the light and the peripheral side surface of the light guide plate form a third angle θ3; Wherein, the second angle θ2 satisfies the following relationship:

2. The display device according to claim 1, wherein: The upper surface of the light guide plate of the light guide plate comprises: a first area, the orthographic projection of the first area on the base substrate partially overlaps with the orthographic projection of the liquid crystal layer of the display component on the base substrate; and a second region, the second region being located between the first region and the peripheral side surface of the light guide plate, Wherein, the first recessed portion is arranged in the first area.

3. The display device according to claim 2, wherein: The distribution density ρ of the first recessed portions in the first region gradually increases from a direction close to the peripheral side surface of the light guide plate toward a direction away from the peripheral side surface of the light guide plate.

4. The display device according to claim 3, wherein: The distribution density ρ of the first recessed portion in the first region satisfies the following relationship: Wherein, S1 is the opening area of ​​the first recessed portion, S2 is the unit area, N is the number of the first recessed portions within the unit area S2, and 4%≤ρ≤10%.

5. The display device according to claim 4, wherein: The orthographic projection of the light guide plate on the base substrate is circular; The first recessed portion includes a conical recessed portion or a truncated cone recessed portion, and a generatrix of the conical recessed portion or the truncated cone recessed portion and an upper end surface of the light guide plate form the second angle θ2.

6. The display device according to claim 5, wherein: The orthographic projection of the light guide plate on the base substrate is an n-gon, where n is an integer greater than or equal to 5; The first recessed portion comprises: a conical recessed portion or a truncated cone recessed portion, and the second angle θ2 is formed between the generatrix of the conical recessed portion or the truncated cone recessed portion and the upper end surface of the light guide plate; and / or n pyramid-shaped recessed portions or n prism-shaped recessed portions, wherein the second angle θ2 is formed between the oblique side surfaces of the n pyramid-shaped recessed portions or n prism-shaped recessed portions facing the peripheral side surfaces of the light guide plate and the upper end surface of the light guide plate.

7. The display device according to claim 4, wherein: The orthographic projection of the light guide plate on the base substrate is a quadrilateral; The peripheral side surfaces of the light guide plate include a first peripheral side surface and a second peripheral side surface which are arranged opposite to each other, and a third peripheral side surface and a fourth peripheral side surface which are arranged opposite to each other. The third peripheral side surface and the fourth peripheral side surface are respectively connected to and perpendicular to the first peripheral side surface and the second peripheral side surface; The light sources are respectively arranged opposite to the first peripheral side surface and the second peripheral side surface.

8. The display device according to claim 7, wherein: The first recessed portion comprises a quadrangular pyramid-shaped recessed portion, The quadrangular pyramid-shaped recessed portion comprises: A first oblique side surface, facing the first peripheral side surface; A second oblique side surface, arranged opposite to the first oblique side surface and facing the second peripheral side surface; A third oblique side surface, located between the first oblique side surface and the second oblique side surface, facing the third peripheral side surface; a fourth oblique side surface, arranged opposite to the third oblique side surface and facing the fourth peripheral side surface; The first oblique side surface and the second oblique side surface respectively form the second included angle θ2 with the upper end surface of the light guide plate.

9. The display device according to claim 8, wherein: The third oblique side surface and the fourth oblique side surface respectively form a fourth included angle θ4 with the upper surface of the light guide plate; The second angle θ2 is smaller than the fourth angle θ4, and the fourth angle θ4 is ≤80°.

10. The display device according to claim 9, wherein: A connecting chamfer R is provided between the oblique side surfaces of the quadrangular pyramid-shaped recessed portion, and the connecting chamfer R is ≤1.5 um.

11. The display device according to claim 9, wherein: The depression depth of the quadrangular pyramid depression toward the base substrate is h1, wherein 3um≤h1≤8um.

12. The display device according to claim 4, wherein: A plurality of second recessed portions recessed toward the substrate are evenly arranged on a second region of the upper surface of the light guide plate; The second recessed portion includes a spherical cap recessed portion.

13. The display device according to claim 12, wherein: The depth of the spherical cap depression toward the substrate is h2, 1um≤h2≤9um The cross-sectional diameter of the spherical cap recess is D, 18um≤D≤50um; The distribution density of the spherical cap recesses in the second region is less than or equal to 2%.

14. The display device according to any one of claims 1 to 4, wherein: The liquid crystal layer of the display component includes a plurality of pixel units arranged in an array along a first direction and a second direction, wherein the first direction and the second direction intersect; Each pixel unit includes a plurality of sub-pixels arranged in sequence in the first direction, the length direction of each sub-pixel extends along the second direction, and the width direction of the sub-pixel is parallel to the first direction.

15. The display device according to claim 14, wherein: The light guide plate comprises a lower end surface of the light guide plate close to the substrate, The lower end surface of the light guide plate is provided with a third recessed portion recessed in a direction away from the base substrate; The third recessed portion includes a V-shaped recessed portion, and the V-shaped recessed portion is extended in the first direction and arranged at intervals in the second direction.

16. The display device according to claim 15, wherein: The depth of the V-shaped groove recessed portion in the direction away from the substrate is h3, 1um≤h3≤30um; The opening width of the V-shaped groove recess in the second direction is W, 5um≤W≤30um.

17. The display device according to claim 16, wherein: The opening width of the V-shaped groove recess is less than or equal to half of the sub-pixel width; Each sub-pixel includes at least one V-shaped groove depression extending in the first direction in the length direction.

18. The display device according to any one of claims 2 to 4, wherein: The light source comprises a single row of light sources composed of a plurality of lighting lamps arranged at intervals along the peripheral side of the light guide plate. There is a spacing G between adjacent lighting lamps of the single-row light source, and the spacing G satisfies the following relationship: G=2×A×tanθ4 Wherein, A is the width of the peripheral side surface of the light guide plate from the first region, and θ4 is the refraction angle of the light beam of the lighting lamp after entering the light guide plate.

19. The display device according to any one of claims 2 to 4, wherein: The light source comprises a plurality of single-row light sources staggered along the peripheral side of the light guide plate, wherein the single-row light source is composed of a plurality of illuminating lamps spaced along the peripheral side of the light guide plate, and there is a spacing G between adjacent illuminating lamps of the single-row light source. Among them, 0.35mm≤G≤0.9mm.

20. The display device according to any one of claims 2 to 4, wherein: Also includes: A touch component is arranged on a side of the light emitting component away from the base substrate; The light shielding component is located between the touch component and the light emitting component, and the orthographic projection of the light shielding component on the base substrate is located within the orthographic projection of the second area on the base substrate.

21. The display device according to claim 20, wherein: The light shielding assembly comprises: a shielding main board arranged parallel to the upper surface of the light guide plate; and A curved portion is connected to the shielding main board and is curved from the shielding main board away from the peripheral side surface of the light guide plate toward the upper end surface of the light guide plate.

22. The display device according to claim 20, wherein: The light shielding assembly comprises: a shielding main board arranged parallel to the upper surface of the light guide plate; and A shielding sub-plate is located between the shielding main plate and the light guide plate, the orthographic projection of the shielding sub-plate on the base substrate is located within the orthographic projection of the shielding main plate on the base substrate, and the shielding sub-plate is arranged close to the first area.

23. The display device according to claim 20, wherein: Also includes: The bonding layer is located between the touch component and the light shielding component, and between the light shielding component and the light emitting component. The orthographic projection of the bonding layer on the base substrate is located within the orthographic projection of the second region on the base substrate.

24. The display device according to any one of claims 2 to 4, wherein: Also includes: A touch component is arranged on a side of the light emitting component away from the base substrate; The bonding layer is located between the touch component and the light emitting component and is used to bond the touch component and the light emitting component together. The orthographic projection of the bonding layer on the base substrate is located within the orthographic projection of the first region on the base substrate.

25. The display device according to claim 1, wherein: The first angle θ1 satisfies: 5°≤θ1≤15°, The second angle θ2 satisfies: 35°≤θ2≤50°.

26. A method for manufacturing a display device, wherein: include: Providing a substrate; A reflective component is formed on one side of the substrate, the reflective component comprising an upper end surface of the reflective component away from the substrate, a plurality of protrusions are arranged on the upper end surface of the reflective component, a first angle θ1 is formed between a side tangent of the protrusion and the upper end surface of the reflective component, and the side tangent is a tangent of a side between the lowest point and the highest point of the protrusion at a midpoint position; forming a display component on a side of the reflective component away from the base substrate, wherein the display component comprises a liquid crystal layer having a first refractive index n1; A light emitting component is formed on a side of the display component away from the base substrate, Forming the light emitting assembly includes: A light guide plate is formed, wherein the light guide plate has a second refractive index n2, the light guide plate comprises a peripheral side surface of the light guide plate and an upper surface of the light guide plate away from the substrate, the upper surface of the light guide plate is provided with a plurality of first recessed portions recessed toward the substrate, and a second angle θ2 is formed between the oblique side surface of the first recessed portion facing the peripheral side surface of the light guide plate and the upper surface of the light guide plate; A light source is formed at a position relative to the peripheral side surface of the light guide plate, the light source emits light toward the peripheral side surface of the light guide plate, and the light and the peripheral side surface of the light guide plate form a third angle θ3; Wherein, the second angle θ2 satisfies the following relationship:

27. The manufacturing method according to claim 26, wherein: Forming the light guide plate includes: forming a first area on the upper surface of the light guide plate so that the orthographic projection of the first area on the base substrate partially overlaps with the orthographic projection of the liquid crystal layer of the display component on the base substrate; and forming a second area on the upper surface of the light guide plate so that the second area is located between the first area and the peripheral side surface of the light guide plate; and, forming the first recessed portion in the first region and forming the second recessed portion in the second region by a first ion beam etching process, A third recessed portion is formed on the lower end surface of the light guide plate by a second ion beam etching process.

28. The manufacturing method according to claim 27, wherein: The first ion beam includes an inclined ion beam in a first direction and an inclined ion beam in a second direction, the first recess has a symmetry axis, and the inclined surface of the first recess includes a first inclined surface and a second inclined surface that are mirror-symmetrically arranged relative to the symmetry axis. Forming the first recessed portion in the first region by a first ion beam etching process includes: The first inclined surface of the first recessed portion is etched by an inclined ion beam in a first direction, and the second inclined surface of the first recessed portion is etched by an inclined ion beam in a second direction. The first direction and the second direction are mirror-symmetrical with respect to the symmetry axis, and the first direction forms a first angle θ with the upper end surface of the light guide plate. 21 The second direction forms a second angle θ with the upper surface of the light guide plate 22 , and θ 21 =θ 22 =θ2.

29. The manufacturing method according to claim 27, wherein: The second ion beam includes an inclined ion beam in a third direction and an inclined ion beam in a fourth direction, the third recessed portion has a symmetry plane, and the third recessed portion includes a first inclined surface and a second inclined surface that are mirror-symmetrically arranged relative to the symmetry plane. Forming a third recessed portion on the lower end surface of the light guide plate by a second ion beam etching process comprises: The first inclined surface of the third recessed portion is etched by an inclined ion beam in a third direction, and the second inclined surface of the third recessed portion is etched by an inclined ion beam in a fourth direction, and the third direction and the fourth direction are mirror-symmetric with respect to the symmetry plane.

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