Optical device and terminal apparatus

Abstract

An optical device and a terminal apparatus. The optical device comprises an array substrate (1) and a micromirror structure (2), wherein the array substrate (1) comprises a TFT device (5) and a micro-coil (70); the micromirror structure (2) comprises a binding ball (100) and a mirror body (110); a circle of magnetic particles (120) are provided in an edge area (4) on the mirror body (110); in the direction of the film thickness, one micro-coil (70) is aligned with at least one magnetic particle (120); and the TFT device (5) independently drives the micro-coil (70) to generate a magnetic field, such that the magnetic particles (120) drive the micromirror structure (2) to deflect.

Description

Optical devices and terminal equipment

[0001] This application claims priority to Chinese patent application No. 202311623210.1 filed on November 29, 2023, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of display technology, and in particular to an optical device and a terminal device. Background Art

[0003] In daily life and work, in certain scenarios, there is an urgent need to provide an optical device to change the direction of light as needed so that light can propagate in different directions. For example, in a display screen, in addition to making the light emitted by the luminous pixels have their own light emission direction, the direction can also be adjusted with the help of optical devices to achieve a wider viewing angle; for example, when driving at night, when the high beams of the following car are on, it will affect your driving vision and safety. At this time, it is necessary to change the direction of its light to avoid it directly entering the driver's eyes, and at the same time, it can also remind the following car to turn off the high beams; for example, in a studio, an intelligent dimming mirror is needed so that the light can quickly adjust the direction of the light according to the photographer's requirements, and other application scenarios; including but not limited to the above scenarios, it is necessary to enable the light to continuously change direction according to demand. SUMMARY OF THE INVENTION

[0004] Therefore, existing optical devices have the technical problem that light cannot be changed into different directions as needed.

[0005] The embodiments of the present application provide an optical device and a terminal device, which can alleviate the technical problem that existing optical devices have that light cannot be changed into different directions as needed.

[0006] An embodiment of the present application provides an optical device, comprising:

[0007] An array substrate comprising a substrate and a TFT device disposed above the substrate, wherein a micro-coil and a binding base, which are insulated from each other, are disposed on a side of the TFT device away from the substrate, wherein one micro-coil is electrically connected to each TFT device;

[0008] A micromirror structure, the micromirror structure comprising a binding ball and a mirror body, the mirror body comprising a reflective surface and a back surface opposite to the reflective surface, one end of the binding ball being movably connected to the back surface, and the other end of the binding ball being fixedly connected to the binding base, the mirror body comprising a central area and an edge area disposed around the central area, the mirror body being provided with a circle of magnetic particles in the edge area;

[0009] Wherein, in the film thickness direction of the array substrate, one of the micro coils and at least one of the magnetic particles are arranged in alignment.

[0010] An embodiment of the present application provides a terminal device, wherein the terminal device includes an optical device, and the optical device includes:

[0011] An array substrate comprising a substrate and a TFT device disposed above the substrate, wherein a micro-coil and a binding base, which are insulated from each other, are disposed on a side of the TFT device away from the substrate, wherein one micro-coil is electrically connected to each TFT device;

[0012] A micromirror structure, the micromirror structure comprising a binding ball and a mirror body, the mirror body comprising a reflective surface and a back surface opposite to the reflective surface, one end of the binding ball being movably connected to the back surface, and the other end of the binding ball being fixedly connected to the binding base, the mirror body comprising a central area and an edge area disposed around the central area, the mirror body being provided with a circle of magnetic particles in the edge area;

[0013] Wherein, in the film thickness direction of the array substrate, one of the micro coils and at least one of the magnetic particles are arranged in alignment. Beneficial effects

[0014] By electrically connecting a TFT device to a microcoil, the magnetic field of the microcoil affects the magnetic particles on the micromirror structure, thereby driving the micromirror structure to deflect, thereby changing the reflection direction of the light incident on the reflective surface of the micromirror structure. Since the current provided by the TFT device to the microcoil is adjustable and a TFT device independently drives a microcoil, the change in the direction of the light can also be adjusted in real time, alleviating the technical problem of existing optical devices that the light cannot change to different directions as needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0016] FIG1 is a schematic cross-sectional view of an optical device provided by the present application;

[0017] FIG2 is a schematic top view of a first type of optical device provided by the present application;

[0018] FIG3 is a second schematic top view of the optical device provided in the present application.

[0019] Description of reference numerals:

[0020] Modes for Carrying Out the Invention

[0021] The embodiments of the present application merely illustrate exemplary embodiments of the inventive concept, which may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; and "inside" and "outside" refer to the outline of the device.

[0023] Among them, Thin Film Transistor (TFT).

[0024] Referring to Figures 1, 2, and 3, the optical device provided in this application includes an array substrate 1 and a micromirror structure 2. The array substrate 1 includes a substrate 10, a TFT device 5 disposed above the substrate 10, a passivation layer 60 disposed on the side of the TFT device 5 away from the substrate 10, a microcoil 70 and a binding base 90 disposed on the side of the passivation layer 60 away from the substrate 10 in an insulated manner, and one microcoil 70 is electrically connected to one TFT device 5. The micromirror structure 2 includes a binding ball 100 and a mirror body 110. The mirror body 110 includes a reflective surface and a back surface relative to the reflective surface. One end of the binding ball 100 is movably connected to the back surface, and the other end of the binding ball 100 is fixedly connected to the binding base 90. The mirror body 110 includes a central area 3 and an edge area 4 arranged around the central area 3. The mirror body 110 is provided with a circle of magnetic particles 120 in the edge area 4; wherein, in the film thickness direction of the array substrate 1, one of the micro coils 70 is arranged in alignment with at least one of the magnetic particles 120.

[0025] The binding base 90 is used to be fixedly connected to the binding ball 100 , thereby fixing the position of the micromirror structure 2 .

[0026] The magnetic particles 120 are fixedly connected to the mirror body 110 .

[0027] It can be understood that the TFT device 5 is used to independently provide current to the micro coil 70. After being energized, the micro coil 70 provides a magnetic field to the magnetic particles 120. The magnetic field causes the magnetic particles 120 to deflect, and the magnetic particles 120 drive the micromirror structure 2 to deflect, so that the micromirror structure 2 can deflect in all directions of 360 degrees.

[0028] In this embodiment, a TFT device 5 is electrically connected to a microcoil 70, so that the magnetic field of the microcoil 70 affects the magnetic particles 120 on the micromirror structure 2, thereby causing the micromirror structure 2 to deflect, thereby changing the reflection direction of light emitted to the reflective surface of the micromirror structure 2. Since the current provided by the TFT device 5 to the microcoil 70 is controllable and a TFT device 5 independently drives a microcoil 70, the change in the direction of the light can also be adjusted in real time, alleviating the technical problem of existing optical devices in which light cannot be changed to different directions as needed.

[0029] The technical solution of this application is now described in conjunction with specific embodiments.

[0030] Optionally, in some embodiments of the present application, at least four of the micro coils are arranged around a binding base, and the angle between the orthographic projections of two adjacent micro coils on the substrate and the lines connecting the orthographic projections of the binding base on the substrate is less than or equal to 90 degrees.

[0031] Optionally, in some embodiments of the present application, when any of the microcoils is energized, the micromirror structure deflects toward the energized microcoil, or, when two adjacent microcoils are energized, the micromirror structure deflects toward the area between the two microcoils.

[0032] Optionally, in some embodiments of the present application, a groove is provided on the back side of the mirror body, the binding ball is partially provided in the groove, the groove and the binding ball are designed in a similar shape, and the outline size of the groove is larger than the outline size of the binding ball, wherein the ratio of the volume of the binding ball located outside the groove to the volume of the binding ball located inside the groove is less than 1.

[0033] Optionally, in some embodiments of the present application, the cross-sectional width of the groove at one end facing the substrate is smaller than the diameter width of the binding ball.

[0034] Optionally, in some embodiments of the present application, the volume of the exposed portion of the binding ball is less than half of the total volume of the binding ball.

[0035] Optionally, in some embodiments of the present application, the binding ball includes a first part and a second part wrapping the first part, and the second part is made of a metal material, wherein the hardness of the first part is greater than the hardness of the second part.

[0036] Optionally, in some embodiments of the present application, the thickness of the second portion ranges from 0.1 microns to 1.5 microns.

[0037] Optionally, in some embodiments of the present application, the magnetic particles are evenly distributed in the edge region, and the distances between adjacent magnetic particles are equal.

[0038] Optionally, in some embodiments of the present application, the sizes and dimensions of adjacent magnetic particles are the same.

[0039] Optionally, in some embodiments of the present application, eight micro coils are arranged around a binding base, and the angle between the orthographic projections of two adjacent micro coils on the substrate and the line connecting the orthographic projections of the binding base on the substrate is 45 degrees.

[0040] Optionally, in some embodiments of the present application, the reflective surface of the mirror body is any one of a groove, a convex surface, and a plane.

[0041] Optionally, in some embodiments of the present application, the binding base and the micro coil are arranged on the same layer.

[0042] Optionally, in some embodiments of the present application, a surface of one side of the binding base away from the substrate is exposed.

[0043] Optionally, in some embodiments of the present application, a surface of the binding base away from the substrate is higher than a surface of the microcoil away from the substrate.

[0044] Optionally, in some embodiments of the present application, a surface of the mirror body facing the substrate may be an arc surface, and a thickness at the center of the mirror body is greater than a thickness at the edge.

[0045] Optionally, in some embodiments of the present application, the array substrate further includes a gate layer, a gate insulation layer, an active layer, a source-drain layer, a passivation layer, and a flat layer. The gate layer is arranged above the substrate, the gate insulation layer is arranged on the side of the gate layer away from the substrate, the active layer is arranged on the side of the gate insulation layer away from the substrate, the source-drain layer is arranged on the side of the active layer away from the substrate, the passivation layer is arranged on the side of the source-drain layer away from the substrate, the microcoil is arranged on the side of the passivation layer away from the substrate, the flat layer is arranged on the side of the microcoil away from the substrate, the binding base is arranged on the side of the flat layer away from the substrate, and the flat layer is arranged on the entire surface and covers the microcoil.

[0046] Optionally, in some embodiments of the present application, the micro coil is arranged in the same layer as the source and drain layer.

[0047] Optionally, in some embodiments of the present application, at least two of the microcoil, the source / drain layer, and the binding base are made of the same material.

[0048] In one embodiment, referring to FIG. 1 , the TFT device 5 includes a source electrode 501 and a drain electrode 502 , and the micro coil 70 is electrically connected to the drain electrode 502 through a via hole penetrating the passivation layer 60 .

[0049] In which, the array substrate 1 also includes a gate layer 20, a gate insulation layer 30, an active layer 40, a source and drain layer 50, a passivation layer 60, and a flat layer 80. The gate layer 20 is arranged above the substrate 10, the gate insulation layer 30 is arranged on the side of the gate layer 20 away from the substrate 10, the active layer 40 is arranged on the side of the gate insulation layer 30 away from the substrate 10, the source and drain layer 50 is arranged on the side of the active layer 40 away from the substrate 10, the passivation layer 60 is arranged on the side of the source and drain layer 50 away from the substrate 10, the micro coil 70 is arranged on the side of the passivation layer 60 away from the substrate 10, the flat layer 80 is arranged on the side of the micro coil 70 away from the substrate 10, and the binding base 90 is arranged on the side of the flat layer 80 away from the substrate 10.

[0050] It can be understood that the flat layer 80 is provided on the entire surface and covers the micro coil 70 .

[0051] It should be noted that this application uses the array substrate 1 as an example of a bottom-gate structure. The array substrate 1 can also be a top-gate structure, and the TFT device 5 can be any one of a low-temperature polysilicon thin-film transistor and an oxide semiconductor thin-film crystal.

[0052] In one embodiment, the binding base 90 may be disposed on the same layer as the micro coil 70 .

[0053] The binding base 90 and the micro coil 70 may be disposed in the same layer on a side of the passivation layer 60 or the flat layer 80 away from the substrate 10 .

[0054] The surface of the binding base 90 that is away from the substrate 10 is exposed.

[0055] The surface of the binding base 90 away from the substrate 10 may be higher than the surface of the micro coil 70 away from the substrate 10 .

[0056] The surface of the mirror body 110 facing the substrate 10 may be an arc surface, and the back surface of the mirror body 110 facing the substrate 10 may have a thickness at the center greater than a thickness at the edge.

[0057] It can be understood that the surface of the binding base 90 on the side away from the substrate 10 can be higher than the surface of the micro coil 70 on the side away from the substrate 10, so as to facilitate the fixed connection between the binding base 90 and the binding ball 100; the surface of the mirror body 110 on the side facing the substrate 10 can be an arc surface, and the thickness in the center is greater than the thickness at the edge, all of which are to avoid the micro coil 70 affecting the binding of the micro mirror structure 2 set at the binding base 90.

[0058] In one embodiment, the micro coil 70 may also be provided in the same layer as the source / drain electrode layer 50 .

[0059] In one embodiment, at least two of the micro coil 70 , the source / drain electrode layer 50 , and the binding base 90 may be made of the same material.

[0060] It is understandable that by using the same preparation material, or preparing at least two of the micro coil 70 , the source / drain electrode layer 50 , and the binding base 90 in the same layer, the process can be further simplified and the cost can be reduced.

[0061] In one embodiment, the above-mentioned planar layer 80 may be removed, thereby further reducing the overall film thickness of the array substrate 1 .

[0062] In one embodiment, referring to FIG. 2 , at least four micro coils 70 are arranged around a binding base 90, and the angle between the orthographic projections of two adjacent micro coils 70 on the substrate 10 and the lines connecting the orthographic projections of the binding base 90 on the substrate 10 is less than or equal to 90 degrees.

[0063] When any of the microcoils 70 is energized, the micromirror structure 2 deflects toward the energized microcoil 70 , or when two adjacent microcoils 70 are energized, the micromirror structure 2 deflects toward the area between the two microcoils 70 .

[0064] It is understandable that the magnetic field generated when the microcoil 70 is energized drives the magnetic particles 120 of the micromirror structure 2 to move. Since the magnetic particles 120 are fixedly connected to the micromirror structure 2, the micromirror structure 2 can be deflected.

[0065] It should be noted that at least four micro coils 70 are required to achieve 360-degree deflection. Specifically, when there are only four micro coils 70, the angle between the orthographic projections of two adjacent micro coils 70 on the substrate 10 and the lines connecting the orthographic projections of the binding base 90 on the substrate 10 is equal to 90 degrees, or, when the number of micro coils 70 is greater than four, the angle between the orthographic projections of two adjacent micro coils 70 on the substrate 10 and the lines connecting the orthographic projections of the binding base 90 on the substrate 10 is less than 90 degrees; at this time, the micromirror structure 2 can be deflected toward one side of the array substrate 1 in any direction within the horizontal 360-degree range.

[0066] In this embodiment, at least four of the micro-coils 70 are arranged around a binding base 90, and the angle between the orthographic projections of two adjacent micro-coils 70 on the substrate 10 and the lines connecting the orthographic projections of the binding base 90 on the substrate 10 is less than or equal to 90 degrees. This enables the micro-mirror structure 2 to be deflected within the above-mentioned 360-degree range, further improving the viewing angle range of the reflected light after being reflected by the micro-mirror structure 2.

[0067] In one embodiment, a groove is provided on the back side of the mirror body 110, and the binding ball 100 is partially provided in the groove. The groove is designed to imitate the binding ball 100, and the outline size of the groove is larger than the outline size of the binding ball 100, wherein the ratio of the volume of the binding ball 100 located outside the groove to the volume of the binding ball 100 located inside the groove is less than 1.

[0068] The cross-sectional width of the end of the groove facing the substrate 10 is smaller than the diameter of the binding ball 100 .

[0069] It is understandable that the cross-sectional width of the groove at one end facing the substrate 10 is smaller than the diameter of the binding ball 100 , which can confine the binding ball 100 in the groove and prevent it from falling out of the groove.

[0070] It can be understood that the binding ball 100 is embedded in the groove, and the binding ball 100 is movably connected to the groove, so that the mirror body 110 can rotate 360 ​​degrees around the binding ball 100.

[0071] It can be understood that the volume of the exposed portion of the binding ball 100 is less than half of the total volume of the binding ball 100 , thereby preventing the binding ball 100 from falling off.

[0072] It can be understood that, as to how to prepare the above-mentioned mutually interlocking grooves and binding balls 100, specifically, the grooves can be prepared by a photolithography process or a pre-imprinting process, the binding balls 100 are placed in the grooves, and then a mask plate is used to heat the glass to a softening temperature in the form of hot imprinting, so that the cross-sectional width of the groove at one end toward the substrate 10 is smaller than the diameter width of the binding balls 100, so that the anchor balls 100 fall off; the above is only explained as an example of one implementation method, and the present application is not limited to the above method. Other preparation methods that can achieve a ratio of the volume of the binding balls 100 located outside the groove to the volume of the binding balls 100 located inside the groove that is less than 1 can also be applied to the present application.

[0073] In this embodiment, the ratio of the volume of the binding ball 100 located outside the groove to the volume of the binding ball 100 located inside the groove is less than 1; the mirror body 110 can rotate 360 ​​degrees around the binding ball 100 and prevent the binding ball 100 from falling off from the groove.

[0074] In one embodiment, the binding ball 100 includes a first part and a second part wrapping the first part, the second part is made of a metal material, and the hardness of the first part is greater than that of the second part.

[0075] The preparation material of the first part may include ceramics or other materials with a hardness greater than that of metal.

[0076] It can be understood that the binding ball 100 is divided into a first part and a second part that wraps the first part. On the one hand, since the second part includes metal material, it has good ductility and is easy to weld with the binding base 90. On the other hand, since the hardness of the first part is greater than the hardness of the metal material of the second part, the binding ball 100 is not easily deformed, thereby improving the stability of the binding ball 100.

[0077] In this embodiment, the binding ball 100 is divided into a first part and a second part that wraps the first part, and the hardness of the first part is greater than the hardness of the second part; while making it easy to weld the binding ball 100 to the binding base 90 of the array substrate 1, the stability of the binding ball 100 is improved.

[0078] In one embodiment, the second portion has a thickness ranging from 0.1 micrometers to 1.5 micrometers.

[0079] The thickness of the second portion may be 0.1 micrometer, 0.5 micrometer, 0.9 micrometer, 1.3 micrometer, or 1.5 micrometer.

[0080] It can be understood that if the thickness of the second part is less than 0.1 microns, it will be detrimental to the welding between the second part and the binding base 90, making it easy for the binding ball 100 to detach from the binding base 90; if the thickness of the second part is greater than 1.5 microns, on the one hand, the second part includes metal materials, resulting in high cost, and on the other hand, the hardness of the second part is less than that of the first part. The excessive thickness of the second part will cause the binding ball 100 itself to be easily deformed, resulting in poor stability.

[0081] It should be noted that, within the thickness range of 0.1 microns to 1.5 microns, the greater the thickness of the second part, the stronger the welding between the binding ball 100 and the binding base 90; the smaller the thickness of the second part, the better the stability of the binding ball 100; the thickness of the second part can be selected according to actual needs.

[0082] In this embodiment, by limiting the thickness of the second portion, on the one hand, the binding ball 100 is prevented from being easily separated from the binding base 90, and on the other hand, the stability of the binding ball 100 is further improved.

[0083] In one embodiment, the magnetic particles 120 are evenly distributed in the edge region 4 , and the distances between adjacent magnetic particles 120 are equal.

[0084] The sizes and dimensions of the adjacent magnetic particles 120 may be the same.

[0085] The adjacent magnetic particles 120 may be made of the same material.

[0086] It can be understood that the uniform distribution of the magnetic particles 120 is conducive to better realizing that the micromirror structure 2 can be deflected toward the side of the array substrate 1 in any direction within the horizontal 360-degree range; for example: when the magnetic particles 120 are uniformly distributed in the edge area 4, and the size, size, and preparation material of the magnetic particles 120 are the same, and under the premise of ignoring the influence of the magnetic particles 120 on the deflection direction, the adjacent microcoils 70 are passed with currents of the same magnitude, then the deflection direction of the micromirror structure 2 is deflected toward the side of the array substrate 1 along the center line between the adjacent microcoils 70.

[0087] In this embodiment, by uniformly distributing the magnetic particles 120 in the edge region 4 of the micromirror structure 2 , the micromirror structure 2 can be deflected toward one side of the array substrate 1 in any direction within a horizontal range of 360 degrees.

[0088] In one embodiment, referring to FIG. 3 , eight micro coils 70 are arranged around a binding base 90 , and the angle between the orthographic projections of two adjacent micro coils 70 on the substrate 10 and the line connecting the orthographic projections of the binding base 90 on the substrate 10 is 45 degrees.

[0089] It can be understood that eight of the microcoils 70 are arranged around a binding base 90, and the microcoils 70 are evenly and symmetrically distributed around the binding base 90. Compared with only four microcoils 70 being arranged around a binding base 90, this embodiment, based on Figure 2, further provides a microcoil 70 at the 45-degree extension line between two adjacent microcoils 70. That is, the range between the two adjacent microcoils 70 in Figure 2 is 90 degrees, and the deflection within this range is achieved by energizing both adjacent microcoils 70, while the range between the two adjacent microcoils 70 in Figure 3 is 45 degrees, which is equivalent to dividing the original 90-degree range into two 45-degree ranges, thereby achieving more precise control of the deflection of the micromirror structure 2.

[0090] The above angles all refer to the angles between the lines connecting the orthographic projections of the two micro-coils 70 on the substrate 10 and the orthographic projections of the binding base 90 on the substrate 10 .

[0091] Among them, N micro coils 70 can be arranged around a binding base 90, wherein N is a positive integer and N is greater than or equal to 1; wherein, the angle between the orthographic projections of two adjacent micro coils 70 on the substrate 10 and the line connecting the orthographic projections of the binding base 90 on the substrate 10, and the angle between the orthographic projections of another two adjacent micro coils 70 on the substrate 10 and the line connecting the orthographic projections of the binding base 90 on the substrate 10, can be equal or different.

[0092] In this embodiment, by disposing more than four micro-coils 70 around a binding base 90 , the deflection accuracy of the micro-mirror structure 2 can be improved.

[0093] In one embodiment, the reflective surface of the mirror body 110 is any one of a groove, a convex surface, and a flat surface.

[0094] It is understandable that the mirror body 110 can also adjust the viewing angle of the reflected light by rotating different reflective surfaces. The reflective surfaces of the present application include but are not limited to the above-mentioned grooves, convex surfaces, and planes.

[0095] In the present application, a TFT device 5 independently drives a micro coil 70, and utilizes the magnetic field generated by the micro coil 70 to move the magnetic particles 120, thereby driving the micro mirror structure 2 to deflect; by controlling the switch of the TFT device 5 and the current input to the micro coil 70, real-time control of the deflection of the micro mirror structure 2 can be achieved.

[0096] Among them, the present application also provides a technical solution that can realize that the micromirror structure 2 can be deflected toward the side of the array substrate 1 in any direction within the horizontal range of 360 degrees. Specifically, by setting at least four microcoils 70, and the angle between the lines connecting the orthographic projections of two adjacent microcoils 70 on the substrate 10 and the orthographic projections of the binding base 90 on the substrate 10 is less than or equal to 90 degrees, the micromirror structure 2 can be deflected toward the side of the array substrate 1 in any direction within the horizontal range of 360 degrees; the viewing angle range of the reflected light of the micromirror structure 2 is further improved.

[0097] The present application also discloses an MLED display panel, which includes an array substrate, a micromirror structure, and LED lamp beads. The micromirror structure and the LED lamp beads are both arranged on the same side of the array substrate, and the micromirror structure and the LED lamp beads share the same array substrate.

[0098] Wherein, the micromirror structure can be located between adjacent LED lamp beads.

[0099] Wherein, the micromirror structure and the LED lamp beads can be arranged in an array.

[0100] Wherein, the reflective surface of the micromirror structure may face the light emitting direction of the LED lamp bead.

[0101] It can be understood that the micromirror structure is arranged between adjacent LED lamp beads, and the micromirror structure is used to reflect the light directed toward the reflecting surface along a specific direction, wherein the direction of the reflected light of the micromirror structure can be consistent with the light emitting direction of the LED lamp beads.

[0102] The present application also proposes a terminal device, which includes the above-mentioned optical device, which will not be described in detail here. The terminal device includes but is not limited to a mobile phone, a laptop computer, a tablet computer, a vehicle rearview mirror, a vehicle reflector device, and a vehicle-mounted display terminal.

[0103] The present application also provides a terminal device, which includes a feedback mechanism, and the optical device realizes real-time change of the direction of the light according to the signal of the feedback mechanism.

[0104] The optical device provided in the embodiment of the present application includes an array substrate and a micromirror structure. The array substrate includes a substrate, a TFT device arranged above the substrate, a passivation layer arranged on the side of the TFT device away from the substrate, a microcoil and a binding base arranged in an insulated manner on the side of the passivation layer away from the substrate, one microcoil being electrically connected to each TFT device, the micromirror structure including a binding ball and a mirror body, the mirror body including a reflective surface and a back surface relative to the reflective surface, one end of the binding ball being movably connected to the back surface, and the other end of the binding ball being fixedly connected to the binding base, the mirror body including a central area and an edge area arranged around the central area. The mirror body is provided with a circle of magnetic particles in the edge area; wherein, in the film thickness direction of the array substrate, one of the microcoils is arranged in alignment with at least one of the magnetic particles; a TFT device is electrically connected to a microcoil, so that the magnetic field of the microcoil affects the magnetic particles on the micromirror structure, thereby driving the micromirror structure to deflect, thereby achieving a change in the reflection direction of the light incident on the reflective surface of the micromirror structure. Since the current provided by the TFT device to the microcoil is adjustable, and a TFT device independently drives a microcoil, the change in the direction of the light can also be adjusted in real time, alleviating the technical problem of existing optical devices that the light cannot change to different directions according to demand.

[0105] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0106] The optical device provided in the embodiments of the present application is introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, based on the ideas of the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. An optical device, comprising: An array substrate, the array substrate comprising a substrate, a TFT device disposed on the substrate, a micro coil and a binding base insulated from each other disposed on a side of the TFT device away from the substrate, and a micro coil is electrically connected to a corresponding TFT device; A micromirror structure, wherein the micromirror structure comprises a binding ball and a mirror body, wherein the mirror body comprises a reflective surface and a back surface opposite to the reflective surface, wherein one end of the binding ball is movably connected to the back surface, and the other end of the binding ball is fixedly connected to the binding base, wherein the mirror body comprises a central area and an edge area arranged around the central area, and wherein a circle of magnetic particles is arranged on the edge area of ​​the mirror body; Wherein, in the film thickness direction of the array substrate, one of the micro coils is arranged in alignment with at least one of the magnetic particles.

2. The optical device according to claim 1, wherein: At least four of the micro coils are arranged around a binding base, and the angles between the orthographic projections of two adjacent micro coils on the substrate and the lines connecting the orthographic projections of the binding base on the substrate are less than or equal to 90 degrees.

3. The optical device according to claim 2, wherein: When any of the microcoils is energized, the micromirror structure deflects toward the energized microcoil; or, when two adjacent microcoils are energized, the micromirror structure deflects toward the area between the two microcoils.

4. The optical device according to claim 1, wherein: A groove is provided on the back side of the mirror body, and the binding ball is partially provided in the groove. The groove and the binding ball are designed in a contour, and the outline size of the groove is larger than the outline size of the binding ball, wherein the ratio of the volume of the binding ball located outside the groove to the volume of the binding ball located inside the groove is less than 1.

5. The optical device according to claim 4, wherein: A cross-sectional width of one end of the groove facing the substrate is smaller than a diameter width of the binding ball.

6. The optical device according to claim 4, wherein: The volume of the exposed portion of the binding ball is less than half of the total volume of the binding ball.

7. The optical device according to claim 1, wherein: The binding ball includes a first part and a second part wrapping the first part, the second part is made of a metal material, and the hardness of the first part is greater than the hardness of the second part.

8. The optical device according to claim 7, wherein: The second portion has a thickness ranging from 0.1 micrometers to 1.5 micrometers.

9. The optical device according to claim 1, wherein: The magnetic particles are evenly distributed in the edge region, and the distances between adjacent magnetic particles are equal.

10. The optical device according to claim 9, wherein: The sizes of adjacent magnetic particles are the same.

11. The optical device according to claim 2, wherein: Eight micro coils are arranged around one binding base, and the angle between the orthographic projections of two adjacent micro coils on the substrate and the lines connecting the orthographic projections of the binding base on the substrate is 45 degrees.

12. The optical device according to claim 1, wherein: The reflecting surface of the mirror body is any one of a groove, a convex surface and a flat surface.

13. The optical device according to claim 1, wherein: The binding base is arranged on the same layer as the micro coil.

14. The optical device according to claim 1, wherein: The binding base is exposed on one side of the surface away from the substrate.

15. The optical device according to claim 1, wherein: A surface of the binding base on one side away from the substrate is higher than a surface of the micro coil on one side away from the substrate.

16. The optical device according to claim 1, wherein: A surface of the mirror body facing the substrate may be in the form of an arc, and a thickness at a center of the mirror body is greater than a thickness at an edge.

17. The optical device according to claim 1, wherein: The array substrate further includes a gate layer, a gate insulation layer, an active layer, a source-drain electrode layer, a passivation layer, and a planarization layer. The gate layer is arranged above the substrate, the gate insulation layer is arranged on a side of the gate layer away from the substrate, the active layer is arranged on a side of the gate insulation layer away from the substrate, the source-drain electrode layer is arranged on a side of the active layer away from the substrate, the passivation layer is arranged on a side of the source-drain electrode layer away from the substrate, the micro coil is arranged on a side of the passivation layer away from the substrate, the planarization layer is arranged on a side of the micro coil away from the substrate, the binding base is arranged on a side of the planarization layer away from the substrate, and the planarization layer is arranged on the entire surface and covers the micro coil.

18. The optical device according to claim 17, wherein: The micro coil is arranged in the same layer as the source and drain electrode layer.

19. The optical device according to claim 18, wherein: At least two of the micro coil, the source and drain electrode layer, and the binding base are made of the same material.

20. A terminal device comprising the optical device according to any one of claims 1 to 19.

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