Extended pixel actuator, pixel extender, ray machine device and near-to-eye display device

Abstract

The embodiment of the utility model relates to the technical field of projection display, in particular to an extended pixel actuating piece which comprises a flexible circuit board, the flexible circuit board comprises a flexible substrate and a conductive wire attached to the flexible substrate, and a light passing opening is formed in the flexible substrate; the conductive wire comprises a driving winding; the flexible substrate is provided with a first positive electrode contact and a first negative electrode contact, the first positive electrode contact is used for being electrically connected with a positive electrode of a power supply, the first negative electrode contact is used for being electrically connected with a negative electrode of the power supply, and the first positive electrode contact and the first negative electrode contact are electrically communicated through a conductive wire to form a first loop; the driving winding comprises a first winding and a second winding, and the second winding and the first winding are arranged on the two opposite sides of the light passing opening in the first direction. The first winding and the second winding of the extended pixel actuating piece are composed of the conductive wires attached to the flexible substrate, so that the thickness of the extended pixel actuating piece can be reduced, and the overall size of equipment is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of projection display, in particular to an extended pixel actuator, a pixel extender, an optical-mechanical device and a near-eye display device. BACKGROUND

[0002] The near-eye display technology is a new practical technology developed in the 20th century. With the continuous progress of social productivity and scientific technology, the demand for near-eye display technology in various industries is increasing, and the requirements for the screen of the near-eye display technology are also extremely high-end.

[0003] The optical-mechanical device is a component of the near-eye display device, and the optical-mechanical device uses a micro light-emitting diode (Micro LED) screen as an image generation unit. The Micro LED screen has a relatively thin display screen and lower power consumption, which can greatly reduce the size of the optical-mechanical device. However, the resolution of the Micro LED screen needs to be further improved.

[0004] In order to improve the imaging quality of the near-eye display device, the extended pixel resolution (XPR) technology is usually used to achieve it. The XPR technology can generate an image with higher resolution than the number of pixels by shifting and interleaving two consecutive images with each other, thereby improving the resolution of the Micro LED screen. Specifically, the XPR actuator and the magnet are arranged inside the optical-mechanical device. The XPR actuator includes a coil, and a magnetic field is generated by energizing the coil, and a magnetic force is generated by cooperating with the magnet to realize the shaking of the XPR actuator, thereby achieving the effect of improving the resolution of the display image.

[0005] Although the XPR technology can well improve the resolution of the near-eye display device, the coil used in the XPR actuator is an external coil design (such as a copper wire coil, etc.). The thickness of the external coil is relatively thick and the volume is relatively large, so it will cause the volume of the optical-mechanical device to be relatively large, which is not conducive to the development of the near-eye display device towards miniaturization, so the above problem needs to be solved. CONTENT OF THE INVENTION

[0006] Embodiments of the present application provide an extended pixel actuator, and embodiments of the present application also provide a pixel extender, an optical-mechanical device and a near-eye display device.

[0007] In a first aspect, the embodiments of the present application provide an extended pixel actuator, which comprises a flexible circuit board, the flexible circuit board comprising a flexible substrate and a conductive trace attached to the flexible substrate, the flexible substrate being provided with a light passage; the conductive trace comprising a driving winding; the flexible substrate being provided with a first positive contact and a first negative contact, wherein the first positive contact is configured to be electrically connected to a positive pole of a power supply, the first negative contact is configured to be electrically connected to a negative pole of the power supply, and the first positive contact and the first negative contact are electrically connected through the conductive trace to form a first loop; the driving winding comprising a first winding and a second winding, the first winding being electrically connected to the first positive contact, one end of the second winding being electrically connected to the first winding, and the other end of the second winding being electrically connected to the first negative contact; the second winding being arranged on opposite sides of the light passage along a first direction with the first winding, and the winding direction of the second winding being opposite to the winding direction of the first winding.

[0008] Optionally, in some embodiments, the flexible substrate is provided with a first through hole and a second through hole; the driving winding further comprises a third winding and a fourth winding, wherein: the first winding, the second winding, the third winding and the fourth winding are electrically connected in series between the first positive contact and the first negative contact; the third winding is correspondingly arranged with the first winding and respectively located on opposite surfaces of the flexible substrate, the third winding and the first winding are electrically connected through the first through hole, and the winding direction of the third winding is the same as the winding direction of the first winding; the fourth winding is correspondingly arranged with the second winding and respectively located on opposite surfaces of the flexible substrate, the fourth winding and the second winding are electrically connected through the second through hole, and the winding direction of the fourth winding is the same as the winding direction of the second winding.

[0009] Optionally, in some embodiments, the flexible substrate comprises an electrical connection portion, a trace portion and a mounting portion, the trace portion being connected between the electrical connection portion and the mounting portion to electrically connect the electrical connection portion and the mounting portion; the first positive contact and the first negative contact are both arranged on the electrical connection portion; the first winding and the second winding are both arranged on the mounting portion.

[0010] Optionally, in some embodiments, the flexible substrate is further provided with a second positive contact and a second negative contact, wherein the second positive contact is configured to be electrically connected to the positive pole of the power supply, the second negative contact is configured to be electrically connected to the negative pole of the power supply, and the second positive contact and the second negative contact are electrically connected through the conductive trace to form a second loop; the driving winding further comprises a fifth winding and a sixth winding; the fifth winding and the sixth winding are arranged on opposite sides of the light passage along a second direction, the second direction intersecting the first direction; the fifth winding is electrically connected to the second positive contact, one end of the sixth winding is electrically connected to the second negative contact, and the other end of the sixth winding is electrically connected to the fifth winding; the winding direction of the fifth winding is opposite to the winding direction of the sixth winding, and the number of turns of the fifth winding is the same as the number of turns of the sixth winding.

[0011] Optionally, in some embodiments, the flexible substrate is provided with a third through hole and a fourth through hole; the drive winding further comprises a seventh winding and an eighth winding, wherein: the fifth winding, the sixth winding, the seventh winding and the eighth winding are electrically connected in series between the second positive contact and the second negative contact; the seventh winding and the fifth winding are correspondingly arranged on the opposite surfaces of the flexible substrate and are electrically connected through the third through hole, and the winding direction of the seventh winding is the same as that of the fifth winding; the eighth winding and the sixth winding are correspondingly arranged on the opposite surfaces of the flexible substrate and are electrically connected through the fourth through hole, and the winding direction of the eighth winding is the same as that of the sixth winding.

[0012] Optionally, in some embodiments, the first positive contact and the first negative contact are located on the first surface of the power connection part, and the second positive contact and the second negative contact are located on the second surface of the power connection part, the second surface being opposite to the first surface.

[0013] Optionally, in some embodiments, the first winding and the second winding are each composed of a conductive trace wound into a loop, and each loop of the conductive trace constituting the drive winding is in the same plane.

[0014] In a second aspect, embodiments of the present application provide a pixel expander, comprising a mounting plate, a mover assembly and the above-mentioned extended pixel actuating member, wherein the mover assembly comprises a base plate, a glass sheet and a magnet; the base plate comprises a fixed part and an elastic part, the fixed part is connected to the elastic part and fixed to the mounting plate, the elastic part encloses a hollow part for light transmission, the glass sheet is arranged in the hollow part, the glass sheet is coaxially arranged with the light transmission port of the extended pixel actuating member, and the magnet is arranged in the elastic part and corresponds to the drive winding of the extended pixel actuating member; under the interaction of the drive winding of the extended pixel actuating member and the magnet of the mover assembly, the mover assembly can be offset relative to the extended pixel actuating member to make the glass sheet deflect the light passing through the light transmission port.

[0015] In a third aspect, embodiments of the present application provide an optical-mechanical device, comprising an optical-mechanical shell, an imaging device, a lens and the above-mentioned pixel expander; the pixel expander is arranged in the optical-mechanical shell, the imaging device and the lens are respectively located on the opposite sides of the extended pixel actuating member, and the lens, the glass sheet of the pixel expander and the imaging device are sequentially arranged along the optical axis of the lens; the glass sheet of the pixel expander is located on the light path of the light emitted by the imaging device, so that the glass sheet can deflect the light.

[0016] In a fourth aspect, embodiments of the present application provide a near-eye display device, comprising a housing and the above-mentioned optical-mechanical device, and the optical-mechanical device is arranged in the housing.

[0017] In the extended pixel actuator and pixel expander provided in this application embodiment, since conductive traces are attached to the flexible substrate of the extended pixel actuator, and the conductive traces are connected to the first positive contact and the first negative contact on the flexible substrate to form a first circuit, the conductive traces include a drive winding, which includes a first winding and a second winding arranged along a first direction, and the winding direction of the first winding and the winding direction of the second winding are opposite; therefore, after the first circuit is energized, the current starts from the first positive contact, flows through the first winding and the second winding in sequence, and returns to the first negative contact. The current flows in opposite directions in the first winding and the second winding, so magnetic fields with opposite directions are generated near the first winding and the second winding. The magnetic field can drive the moving part assembly of the pixel expander, which is equipped with a magnet, to drive the glass plate to shake and shift back and forth relative to the mounting plate, so that the optical path shift occurs inside the pixel expander to achieve the purpose of expanding pixels.

[0018] Furthermore, since the aforementioned drive windings (the first winding and the second winding) are directly formed from conductive traces attached to the flexible substrate, the first winding and the second winding are thinner and smaller in size, and there is no need to set solder points on the flexible substrate to install the windings separately. In summary, the aforementioned extended pixel actuator has the advantages of small thickness, small size, light weight, and convenient installation. Attached Figure Description

[0019] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the first side of the extended pixel actuator in some embodiments of this application.

[0021] Figure 2 yes Figure 1 The diagram shows the structure of the second side of the extended pixel actuator.

[0022] Figure 3 This is a structural schematic diagram of the first surface of the extended pixel actuator in some other embodiments of this application.

[0023] Figure 4 yes Figure 3 The diagram shows the structure of the second side of the extended pixel actuator.

[0024] Figure 5 This is a structural schematic diagram of the first surface of the extended pixel actuator in some other embodiments of this application.

[0025] Figure 6 yesFigure 5 A structural schematic diagram of a second face of the extended pixel actuating member.

[0026] Figure 7 A structural schematic diagram of a pixel extender provided by some embodiments of the present application.

[0027] Figure 8 A structural schematic diagram of a pixel extender provided by some embodiments of the present application. Figure 7 A structural exploded view of the pixel extender.

[0028] Figure 9 A structural block diagram of an optical-mechanical device provided by some embodiments of the present application.

[0029] Figure 10 A structural schematic diagram of a near-eye display device provided by some embodiments of the present application.

[0030] Label Explanation: 100, extended pixel actuating member; 10, flexible circuit board; 20, flexible substrate; 201, first face; 202, second face; 203, first positive contact; 204, first negative contact; 205, second positive contact; 206, second negative contact; 207, first through-hole; 208, second through-hole; 209, third through-hole; 210, fourth through-hole; 211, fifth through-hole; 212, sixth through-hole; 213, electricity connection part; 214, wiring part; 215, mounting part; 216, light transmission opening; 30, conductive wiring; 301, first winding; 302, second winding; 303, third winding; 304, fourth winding; 305, fifth winding; 306, sixth winding; 307, seventh winding; 308, eighth winding; 309, first conductive wire; 310, second conductive wire; 311, third conductive wire; 312, fourth conductive wire; 313, fifth conductive wire; 314, sixth conductive wire; 200, pixel extender; 21, mounting plate; 22, mover assembly; 221, base sheet; 222, glass sheet; 223, magnet; 224, fixing part; 225, elastic part; 226, hollow part; 300, optical-mechanical device; 31, imaging device; 32, lens; 500, near-eye display device; 501, housing; 502, display lens; 503, wearing part. DETAILED DESCRIPTION

[0031] In order to enable persons skilled in the art to better understand the schemes of the present application, the technical schemes in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without making creative efforts fall within the scope of protection of the present application.

[0032] In the description of the application, it needs to be understood that the terms "length", "width", "thickness", "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate the orientation or state relationship based on the orientation or state relationship shown in the drawings. These terms are mainly for better description of the application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0033] In addition, in addition to indicating the orientation or state relationship, the above-mentioned partial terms may also be used to indicate other meanings, for example, the term "upper" may also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the application can be understood according to the specific situation.

[0034] In addition, the terms "first", "second" and the like are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Therefore, the features defined as "first", "second" may explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0035] In addition, unless otherwise specifically specified or limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements, or it can be only surface contact. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific situation.

[0036] As some terms are used in the description and claims to refer to certain components, those skilled in the art should understand that hardware manufacturers may use different names to refer to the same components. The description and claims do not distinguish components by name difference, but by functional difference. As mentioned throughout the description and claims, "including" is an open term, so it should be interpreted as "including but not limited to"; "approximately" means that those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0037] Please refer to Figure 1 and / or Figure 3Embodiments of the present application provide an extended pixel actuator 100, which is applied to a pixel extender 200 as shown in the figure. Figure 7 The pixel extender 200 includes a mounting plate 21, the above-mentioned extended pixel actuator 100, and a mover assembly 22 (see Figure 8 ). The pixel extender 200 is arranged opposite to a display panel in use, and the extended pixel actuator 100 is used to drive the mover assembly 22 to vibrate, so that the resolution of the display panel can be improved according to the principle of extended pixel resolution, that is, the clarity of the video picture obtained by the user can be improved, and the user experience can be improved.

[0038] The above-mentioned extended pixel actuator 100 includes a flexible circuit board 10. As a specific example, in the present embodiment, the specific model of the flexible circuit board 10 is AYF530435, and in other embodiments, the flexible circuit board 10 can also be any other model, which is not limited. The flexible circuit board 10 includes a flexible substrate 20 and a conductive trace 30 attached to the flexible substrate 20. The flexible substrate 20 is the main structure of the flexible circuit board 10, which is a soft plate structure. The flexible substrate 20 is provided with a light passage 216 for light to pass through. The conductive trace 30 is a circuit laid on the surface of the flexible substrate 20, and the conductive trace 30 includes a driving winding, and the conductive trace 30 is used for conduction to form a loop. The conductive trace 30 can be a copper foil trace or a copper foil wire, that is, the conductive trace 30 is the trace structure of the flexible circuit board 10 itself, rather than a wire structure externally connected to the flexible substrate 20. As a specific example, in the present embodiment, the line width of the conductive trace 30 is 2 mil, and in other embodiments, the line width of the conductive trace 30 can also be 1 mil, 3 mil, or any other width, which is not limited.

[0039] The flexible substrate 20 is provided with a first positive contact 203 and a first negative contact 204. The first positive contact 203 is used for electrical connection with the positive pole of a power supply, and the first negative contact 204 is used for electrical connection with the negative pole of the power supply. The first positive contact 203 and the first negative contact 204 are in communication through the conductive trace 30 to form a first loop. The first positive contact 203 and the first negative contact 204 can be any type of contact such as a pin contact, a pin contact, a socket contact, etc., and the types of the two can be the same or different.

[0040] The driving winding includes a first winding 301 and a second winding 302. The first winding 301 is formed by winding a part of the conductive trace 30 on the surface of the flexible substrate 20 for multiple turns, and the first winding 301 is electrically connected with the first positive contact 203.

[0041] The second winding 302 is formed by winding a plurality of turns of a portion of the conductive trace 30 on the surface of the flexible substrate 20, one end of the second winding 302 is electrically connected to the first winding 301, and the other end is electrically connected to the first negative contact 204.

[0042] The second winding 302 and the first winding 301 are arranged on opposite sides of the light passage in the first direction X. The "first direction X" can be any direction in the plane of the flexible substrate 20. As a specific example, in the embodiment shown in Figure 1 In the embodiment shown in Figure 3 In the embodiment shown in

[0043] The winding direction of the second winding 302 is opposite to the winding direction of the first winding 301. It should be noted that the meaning of "the winding direction of the second winding 302 is opposite to the winding direction of the first winding 301" is that when the flexible substrate 20 is in a fixed position and the flexible substrate 20 is observed from the same orientation, the winding direction of the second winding 302 is opposite to the winding direction of the first winding 301, i.e., the flow direction of the current in the second winding 302 is opposite to the flow direction of the current in the first winding 301, so that the current at the second winding 302 and the first winding 301 respectively generates two magnetic fields in opposite directions. As a specific example, in the embodiment shown in Figure 1 and Figure 3 In the embodiment shown in

[0044] Through the above arrangement, in the above extended pixel actuator 100, since the conductive trace 30 is attached to the flexible substrate 20, the conductive trace 30 is in communication with the first positive contact 203 and the first negative contact 204 on the flexible substrate 20 to form a first loop, the conductive trace 30 includes a drive winding, the drive winding includes the first winding 301 and the second winding 302 arranged in the first direction X, and the winding direction of the first winding 301 is opposite to the winding direction of the second winding 302; therefore, after the first loop is powered on, the current flows from the first positive contact 203, sequentially flows through the first winding 301, the second winding 302 and returns to the first negative contact 204, the flow direction of the current in the first winding 301 and the second winding 302 is opposite, so that the first winding 301 and the second winding 302 near the first winding 301 and the second winding 302 generates magnetic fields in opposite directions, which can drive the pixel expander 200 to install the magnet 223 (see Figure 8The mover assembly 22 drives the glass sheet 222 to swing and offset relative to the mounting plate 21, so that the light path offset occurs inside the pixel expander 200 to achieve the purpose of expanding the pixel.

[0045] In addition, since the driving windings (the first winding 301 and the second winding 302) are directly formed by the conductive traces 30 attached on the flexible substrate 20, the thickness and volume of the first winding 301 and the second winding 302 are small, and there is no need to set a soldering point on the flexible substrate 30 to separately mount the windings. In summary, the above-mentioned pixel expansion actuator 100 has the beneficial effects of small thickness, small volume, light weight, and convenient installation.

[0046] In some embodiments, the number of turns of the second winding 302 is the same as the number of turns of the first winding 301. For example, the number of turns of the second winding 302 and the number of turns of the first winding 301 can be any number of turns such as five turns, six turns, seven turns, etc. Through the above setting, since the number of turns of the first winding 301 is the same as the number of turns of the second winding 302, in the case of series connection, the magnetic field strength of the magnetic field generated by the first winding 301 and the magnetic field generated by the second winding 302 is basically the same, so the force of the magnetic field generated by the first winding 301 on the mover assembly 22 (see Figure 8 ) and the force of the magnetic field generated by the second winding 302 on the mover assembly 22 are the same, so the amplitude of the swing and offset of the mover assembly 22 in the first direction X is almost the same, which is beneficial to ensure that the mover assembly 22 stably swings and offsets in the first direction X.

[0047] In some embodiments, the first winding 310 and the second winding 302 are both composed of the conductive traces 30 wound into a coil, and each coil of the conductive traces 30 constituting the driving winding is in the same plane, so that the first winding 301 and the second winding 302 have a flat structure. Through the above setting, it is beneficial to make the flexible circuit board 10 have a flat overall structure, thereby reducing the volume of the pixel expansion actuator 100.

[0048] Please refer to Figure 1 and Figure 2 , or refer to Figure 3 and Figure 4 , in some embodiments, the flexible substrate 20 has a first surface 201 and a second surface 202 facing away from each other, and the first winding 301 and the second winding 302 are both arranged on the first surface 201. In other embodiments, the first winding 301 and the second winding 302 can also be arranged on the second surface 202 at the same time, or the first winding 301 and the second winding 302 can also be arranged on the first surface 201 and the second surface 202 respectively, or the first winding 301 and the second winding 302 can also be arranged on the second surface 202 and the first surface 201 respectively.

[0049] In some embodiments, the first via hole 207 and the second via hole 208 are provided on the flexible substrate 20, and the conductive trace 30 further comprises a third winding 303 and a fourth winding 304. The first winding 301, the second winding 302, the third winding 303 and the fourth winding 304 are electrically connected in series between the first positive contact 203 and the first negative contact 204. The third winding 303 is formed by winding a plurality of turns of a portion of the conductive trace 30 on the surface of the flexible substrate 20, and the fourth winding 304 is formed by winding a plurality of turns of another portion of the conductive trace 30 on the surface of the flexible substrate 20. The plurality of turns of the conductive trace 30 forming the third winding 303 are substantially in the same plane, so that the third winding 303 has a flat structure. The plurality of turns of the conductive trace 30 forming the fourth winding 304 are substantially in the same plane, so that the fourth winding 304 has a flat structure. By the above arrangement, the flexible circuit board 10 as a whole has a flat structure, thereby reducing the volume of the extended pixel actuator 100.

[0050] The third winding 303 is arranged corresponding to the first winding 301 and located on opposite surfaces of the flexible substrate 20, respectively. The third winding 303 is electrically connected to the first winding 301 through the first via hole 207, and the winding direction of the third winding 303 is the same as that of the first winding 301. It should be noted that the above-mentioned "the third winding 303 is electrically connected to the first winding 301 through the first via hole 207" means that a portion of the conductive trace 30 used to achieve the electrical connection between the third winding 303 and the first winding 301 passes through the first via hole 207, for example, one end of the first winding 301 is arranged in the first via hole 207 to connect the third winding 303. By the above arrangement, the first winding 301 and the third winding 303 can be directly connected through the first via hole 207, which shortens the wiring distance of the first winding 301 and the third winding 303, and saves materials. For example, the first winding 301 and the third winding 303 can be formed by winding the same wire through the first via hole 207, or one end of the first winding 301 can pass through the first via hole 207 and be welded to the third winding 303.

[0051] The fourth winding 304 is arranged corresponding to the second winding 302 and located on the opposite surface of the flexible substrate 20, respectively. The fourth winding 304 is electrically connected with the second winding 302 through the second through hole 208. The winding direction of the fourth winding 304 is the same as that of the second winding 302. It should be noted that the above-mentioned "the fourth winding 304 is electrically connected with the second winding 302 through the second through hole 208" means that the part of the conductive trace 30 for realizing the electrical connection between the fourth winding 304 and the second winding 302 passes through the second through hole 208, for example, one end of the second winding 302 is arranged in the second through hole 208 to connect the fourth winding 304. Through the above arrangement, the second winding 302 and the fourth winding 304 can be directly connected through the second through hole 208, which shortens the wiring distance of the second winding 302 and the fourth winding 304, and achieves the effect of saving materials. For example, the second winding 302 and the fourth winding 304 can be respectively formed by the same wire passing through the second through hole 208, or one end of the second winding 302 can pass through the second through hole 208 and be welded to the fourth winding 304.

[0052] As a specific example, the third winding 303 and the fourth winding 304 are arranged on the second surface 202, that is, the third winding 303 and the first winding 301 are arranged on the two surfaces of the flexible substrate 20 which are away from each other, respectively, and the fourth winding 304 and the second winding 302 are arranged on the two surfaces of the flexible substrate 20 which are away from each other, respectively.

[0053] It should be noted that the above-mentioned "the third winding 303 is arranged corresponding to the first winding 301" means that the projection of the third winding 303 in the direction perpendicular to the flexible substrate 20 can substantially coincide with the projection of the first winding 301 in the direction, for example, in the case that the flexible substrate 20 is placed in a flat state, when the third winding 303 and the first winding 301 are projected on the flexible substrate 20 along the direction perpendicular to the flexible substrate 20, respectively, the projections of the third winding 303 and the first winding 301 substantially coincide. The above-mentioned "the winding direction of the third winding 303 is the same as that of the first winding 301" means that in the same perspective, the flow direction of the current in the third winding 303 is the same as that of the current in the first winding 301, that is, the direction of the magnetic field generated by the current flowing through the third winding 303 is the same as that of the magnetic field generated by the current flowing through the first winding 301.

[0054] It should be noted that the above "the fourth winding 304 is arranged corresponding to the second winding 302" means that the projection of the fourth winding 304 in the direction perpendicular to the flexible substrate 20 can substantially coincide with the projection of the second winding 302 in the direction. For example, in the case where the flexible substrate 20 is placed in a flat state, when the fourth winding 304 and the second winding 302 are respectively projected onto the flexible substrate 20 along the direction perpendicular to the flexible substrate 20, the projections of the fourth winding 304 and the second winding 302 substantially coincide. The above "the winding direction of the fourth winding 304 is the same as the winding direction of the second winding 302" means that under the same viewing angle, the flow direction of the current in the fourth winding 304 is the same as the flow direction of the current in the second winding 302, that is, the direction of the magnetic field generated by the current flowing through the fourth winding 304 is the same as the direction of the magnetic field generated by the current flowing through the second winding 302.

[0055] Through the above arrangement, since the third winding 303 and the fourth winding 304 are arranged, the third winding 303 and the first winding 301 are respectively located on the opposite sides of the flexible substrate 20, and the winding direction of the third winding 303 is the same as the winding direction of the first winding 301, so that in the case of series connection, the magnetic field generated by the current flowing through the third winding 303 can be superimposed with the magnetic field generated by the first winding 301, so as to enhance the magnetic field intensity at the position of the first winding 301 and the third winding 303, thereby enabling the position of the first winding 301 and the third winding 303 to generate greater force on the mover assembly 22 (see Figure 8 ). Similarly, since the fourth winding 304 and the second winding 302 are respectively located on the opposite sides of the flexible substrate 20, and the winding direction of the fourth winding 304 is the same as the winding direction of the second winding 302, in the case of series connection, the magnetic field generated by the current flowing through the fourth winding 304 can be superimposed with the magnetic field generated by the second winding 302, so as to enhance the magnetic field intensity at the position of the second winding 302 and the fourth winding 304, thereby enabling the position of the second winding 302 and the fourth winding 304 to generate greater force on the mover assembly 22 (see Figure 8 ). The above arrangement enables the flexible circuit board 10 to provide stronger magnetic force on the mover assembly 22 (see Figure 8 ), thereby enabling the mover assembly 22 (see Figure 8 ) to have greater amplitude and more smooth shaking offset in the first direction X.

[0056] In some embodiments, the number of turns of the third winding 303 is the same as the number of turns of the first winding 301, and the number of turns of the fourth winding 304 is the same as the number of turns of the second winding 302. Since the number of turns of the third winding 303 is the same as the number of turns of the first winding 301, the strength of the magnetic field generated by the third winding 303 is the same as the strength of the magnetic field generated by the first winding 301; since the number of turns of the fourth winding 304 is the same as the number of turns of the second winding 302, the strength of the magnetic field generated by the fourth winding 304 is the same as the strength of the magnetic field generated by the second winding 302. Through the above arrangement, in the case of generating magnetic fields of the same strength, the number of turns of the winding on the single-sided surface of the flexible substrate 20 can be reduced, thereby reducing the volume of the winding on the single-sided surface of the flexible substrate 20, which is conducive to reducing the volume of the flexible substrate 20.

[0057] In some embodiments, the conductive trace 30 further comprises a first conductive wire 309 and a second conductive wire 310. The first conductive wire 309 and the second conductive wire 310 can be copper foil traces or copper foil wires, i.e., the first conductive wire 309 and the second conductive wire 310 are trace structures of the flexible circuit board 10 itself, rather than wire structures externally connected to the flexible substrate 20. One end of the first conductive wire 309 is electrically connected to the first positive contact 203, and the other end is electrically connected to the first winding 301. The first conductive wire 309 and the first winding 301 can be connected by welding or integrally formed. One end of the second conductive wire 310 is electrically connected to the second winding 302, and the other end is electrically connected to the first negative contact 204. The second conductive wire 310 and the second winding 302 can be connected by welding or integrally formed.

[0058] Through the above arrangement, the first conductive wire 309 realizes the electrical connection between the first positive contact 203 and the first winding 301, and when the first conductive wire 309 and the first winding 301 are integrally formed, there is no need to perform a connection operation on the first conductive wire 309 and the first winding 301, thus facilitating preparation. The second conductive wire 310 realizes the electrical connection between the first negative contact 204 and the second winding 302, and when the second conductive wire 310 and the second winding 302 are integrally formed, there is no need to perform a connection operation on the second conductive wire 310 and the second winding 302, thus facilitating preparation.

[0059] Please refer to Figure 1 and Figure 2 , or refer to Figure 3 and Figure 4In some embodiments, the conductive trace 30 further comprises a fifth conductive line 313, which can be a copper foil trace or a copper foil wire, i.e., the fifth conductive line 313 is a trace structure of the flexible circuit board 10 itself, rather than a wire structure externally connected to the flexible substrate 20. The fifth conductive line 313 is laid on the second surface 202, one end of the fifth conductive line 313 is electrically connected to the third winding 303, and the other end is electrically connected to the fourth winding 304. The fifth conductive line 313 and the third winding 303 can be a soldered connection or an integrally formed connection. The fifth conductive line 313 and the fourth winding 304 can be a soldered connection or an integrally formed connection.

[0060] Through the above arrangement, the fifth conductive line 313 realizes the electrical connection of the third winding 303 and the fourth winding 304, and when the first conductive line 309 and the first winding 301 are integrally formed, the first winding 301 and the third winding 303 are integrally formed, the third winding 303 and the fifth conductive line 313 are integrally formed, the fifth conductive line 313 and the fourth winding 304 are integrally formed, the fourth winding 304 and the second winding 302 are integrally formed, and the second winding 302 and the second conductive line 310 are integrally formed, the same wire can be used to lay along the surface of the flexible substrate 20 to sequentially form the first conductive line 309, the first winding 301, the third winding 303, the fifth conductive line 313, the fourth winding 304, the second winding 302, and the second conductive line 310. The above arrangement does not require separate connection operations for each component of the conductive trace 30, thus having the beneficial effects of simple structure and convenient equipment.

[0061] In some embodiments, the flexible substrate 20 comprises an electricity connection part 213, a wire part 214, and a mounting part 215, the wire part 214 is connected between the electricity connection part 213 and the mounting part 215 to realize the electrical connection between the electricity connection part 213 and the mounting part 215, the first positive contact 203 and the first negative contact 204 are arranged on the electricity connection part 213, and the first winding 301 and the second winding 302 are arranged on the mounting part 215. For example, the electricity connection part 213, the wire part 214, and the mounting part 215 can be integrally connected, or two adjacent parts can be welded. The electricity connection part 213 is a part of the flexible substrate 20 used for connecting the power supply, as a specific example, in the present embodiment, the electricity connection part 213 is approximately square, and in other embodiments, the electricity connection part 213 can also be rectangular, circular, or any other shape. The mounting part 215 is a part of the flexible circuit board 10 used for arranging the winding, in the present embodiment, the mounting part 215 is approximately a cross, and in other embodiments, the mounting part 215 can also be square, rectangular, or any other shape. The wire part 214 is a part of the flexible substrate 20 used for connecting the electricity connection part 213 and the mounting part 215, the conductive wire 30 needs to pass through the wire part 214 to realize the electrical connection between the electrode contact and the winding. Specifically, the first positive contact 203 and the first negative contact 204 are arranged on the electricity connection part 213, the first winding 301 and the second winding 302 are arranged on the mounting part 215, and the first conductive wire 309 has at least part of the structure arranged on the wire part 214, and the second conductive wire 310 has at least part of the structure arranged on the wire part 214.

[0062] Through the above arrangement, the electricity connection part 213 can be arranged near the power supply, and the mounting part 215 can be arranged near the display panel, and the electricity connection part 213 and the mounting part 215 are connected through the wire part 214 to ensure that the power supply can provide current for the winding, thereby ensuring that the extended pixel actuator 100 can drive the stator assembly 22 of the pixel expander 200 to vibrate stably.

[0063] In some embodiments, the width of the wire part 214 in a specified direction is less than the width of the electricity connection part 213 in the specified direction, and the width of the wire part 214 in the specified direction is less than the width of the mounting part 215 in the specified direction, and the specified direction is parallel or perpendicular to the first direction X. For example, in the embodiment shown in Figure 1 the specified direction is parallel to the first direction X, and in the embodiment shown in Figure 3 the specified direction is perpendicular to the first direction X. Through the above arrangement, the volume of the wire part 214 can be reduced, thereby saving material costs and facilitating installation. As a specific example, the width of the wire part 214 in the specified direction can be 2 mm, 3 mm, 4 mm, or any other width, which is not limited.

[0064] Please also refer to Figure 5and Figure 6 In some embodiments, the flexible substrate 20 further includes a second positive contact 205 and a second negative contact 206. The second positive contact 205 is electrically connected to the positive terminal of the power supply, and the second negative contact 206 is electrically connected to the negative terminal of the power supply. The second positive contact 205 and the second negative contact 206 are electrically connected through a conductive trace 30 to form a second circuit. The second positive contact 205 and the second negative contact 206 can be any type of contact, such as a pin-type contact, a plug-in contact, or a socket-type contact, and their types can be the same or different.

[0065] The drive winding also includes a fifth winding 305 and a sixth winding 306. The fifth winding 305 is formed by multiple turns of conductive traces 30 wrapped around the surface of the flexible substrate 20, and the sixth winding 306 is formed by multiple turns of conductive traces 30 wrapped around the surface of the flexible substrate 20. The fifth winding 305 and the sixth winding 306 are disposed on opposite sides of the light-transmitting port 216 along a second direction Y, which intersects with the first direction X. As a specific example, in... Figure 5 In the illustrated embodiment, the first direction X is approximately the vertical direction shown in the figure, and the second direction Y is approximately the horizontal direction shown in the figure. The second direction Y is approximately perpendicular to the first direction X. In other embodiments, the second direction Y may not be perpendicular to the first direction X. The multiple turns of conductive traces 30 constituting the fifth winding 305 are substantially in the same plane, so that the fifth winding 305 has a flat structure. The multiple turns of conductive traces 30 constituting the sixth winding 306 are substantially in the same plane, so that the sixth winding 306 has a flat structure. Through the above arrangement, it is beneficial to make the flexible circuit board 10 have an overall flat structure, thereby reducing the size of the extended pixel actuator 100.

[0066] The fifth winding 305 is electrically connected to the second positive contact 205. One end of the sixth winding 306 is electrically connected to the second negative contact 206, and the other end is electrically connected to the fifth winding 305. The winding direction of the fifth winding 305 is opposite to that of the sixth winding 306, and the number of turns in the fifth winding 305 is the same as that in the sixth winding 306.

[0067] It should be noted that the above statement "the winding direction of the fifth winding 305 is opposite to the winding direction of the sixth winding 306" means that, from the same perspective, the direction of current flow in the fifth winding 305 is opposite to the direction of current flow in the sixth winding 306, that is, the direction of the magnetic field generated by the current flowing through the fifth winding 305 is opposite to the direction of the magnetic field generated by the current flowing through the sixth winding 306.

[0068] Through the above setting, in the above-mentioned extended pixel actuating member 100, because the first winding 301 and the second winding 302 are arranged in parallel along the first direction X, the winding direction of the first winding 301 is opposite to the winding direction of the second winding 302, the first winding 301 is electrically connected with the first positive contact 203, and the second winding 302 is electrically connected with the first negative contact 204; and the fifth winding 305 and the sixth winding 306 are arranged in parallel along the second direction Y, the second direction Y intersects the first direction X, the fifth winding 305 is electrically connected with the second positive contact 205, one end of the sixth winding 306 is electrically connected with the second negative contact 206, and the other end of the sixth winding 306 is electrically connected with the fifth winding 305; therefore, after the first loop of the flexible circuit board 10 is powered, the current starts from the first positive contact 203, flows through the first winding 301, the second winding 302, and returns to the first negative contact 204 in turn, the flow direction of the current in the first winding 301 and the second winding 302 is opposite, therefore, the magnetic fields with opposite directions are generated near the first winding 301 and the second winding 302, and the above-mentioned magnetic fields can drive the rotor assembly 22 (see Figure 8 ) to shake and offset back and forth along the first direction X; after the second loop of the flexible circuit board 10 is powered, the current starts from the second positive contact 205, flows through the fifth winding 305, the sixth winding 306, and returns to the second negative contact 206 in turn, the flow direction of the current in the fifth winding 305 and the sixth winding 306 is opposite, therefore, the magnetic fields with opposite directions are generated near the fifth winding 305 and the sixth winding 306, and the above-mentioned magnetic fields can drive the rotor assembly 22 (see Figure 8 ) to shake and offset back and forth along the second direction Y, so that the pixel expansion effect of the pixel expander 200 can be improved.

[0069] Further, because the number of turns of the fifth winding 305 is the same as the number of turns of the sixth winding 306, in the case of series connection, the magnetic field strength of the magnetic field generated by the fifth winding 305 is basically the same as the magnetic field strength of the magnetic field generated by the sixth winding 306, so the force of the magnetic field generated by the fifth winding 305 on the rotor assembly 22 (see Figure 8 ) is the same as the force of the magnetic field generated by the sixth winding 306 on the rotor assembly 22, therefore, the amplitudes of the rotor assembly 22 shaking and offsetting back and forth along the second direction Y are almost the same, which is beneficial to ensure that the rotor assembly 22 stably shakes and offsets along the second direction Y.

[0070] In summary, when the flexible circuit board 10 is powered, the magnetic fields generated by the first winding 301 and the second winding 302 can drive the rotor assembly 22 (see Figure 8 ) to shake and offset along the first direction X, the magnetic fields generated by the fifth winding 305 and the sixth winding 306 can drive the rotor assembly 22 (see Figure 8 ) to shake and offset along the second direction Y, and the first direction X intersects the second direction Y, therefore, the rotor assembly 22 (seeFigure 8 The offset can be shaken back and forth in two different directions, thereby further improving the effect of pixel expansion of the display panel, i.e., further improving the resolution and clarity of the display panel, and improving the user experience.

[0071] In some embodiments, the fifth winding 305, the sixth winding 306, the first winding 301, and the second winding 302 are all arranged on the first surface 201. In other embodiments, the fifth winding 305 can be arranged on either of the first surface 201 and the second surface 202, and the sixth winding 306 can also be arranged on either of the first surface 201 and the second surface 202, without limitation.

[0072] In some embodiments, the flexible substrate 20 is provided with a third through hole 209 and a fourth through hole 210, and the conductive trace 30 further includes a seventh winding 307 and an eighth winding 308. The fifth winding 305, the sixth winding 306, the seventh winding 307, and the eighth winding 308 are electrically connected in series between the second positive contact 205 and the second negative contact 206. The seventh winding 307 is formed by winding a plurality of turns of a portion of the conductive trace 30 on the surface of the flexible substrate 20, and the eighth winding 308 is formed by winding a plurality of turns of a portion of the conductive trace 30 on the surface of the flexible substrate 20. The plurality of turns of the conductive trace 30 that form the seventh winding 307 are substantially in the same plane, so that the seventh winding 307 has a flat structure. The plurality of turns of the conductive trace 30 that form the eighth winding 308 are substantially in the same plane, so that the eighth winding 308 has a flat structure. By the above arrangement, the flexible circuit board 10 as a whole has a flat structure, thereby reducing the volume of the pixel expansion actuator 100.

[0073] The seventh winding 307 is arranged corresponding to the fifth winding 305 and located on opposite surfaces of the flexible substrate 20, respectively. The seventh winding 307 and the fifth winding 305 are electrically connected through the third through hole 209, and the winding direction of the seventh winding 307 is the same as that of the fifth winding 305. It should be noted that the above-mentioned "the seventh winding 307 and the fifth winding 305 are electrically connected through the third through hole 209" means that a portion of the conductive trace 30 used to achieve electrical connection between the seventh winding 307 and the fifth winding 305 passes through the third through hole 209. By the above arrangement, the fifth winding 305 and the seventh winding 307 can be directly connected through the third through hole 209, which shortens the wiring distance of the fifth winding 305 and the seventh winding 307, and achieves the effect of saving materials. For example, the fifth winding 305 and the seventh winding 307 can be formed by winding the same wire material through the third through hole 209, or one end of the fifth winding 305 can be welded to the seventh winding 307 by passing through the third through hole 209.

[0074] The eighth winding 308 is arranged corresponding to the sixth winding 306 and located on the opposite surface of the flexible substrate 20, respectively. The eighth winding 308 and the sixth winding 306 are electrically connected through the fourth through hole 210. The winding direction of the eighth winding 308 is the same as that of the sixth winding 306. It should be noted that the above-mentioned "the eighth winding 308 and the sixth winding 306 are electrically connected through the fourth through hole 210" means that the part of the wire trace 30 for realizing the electrical connection between the eighth winding 308 and the sixth winding 306 passes through the fourth through hole 210. Through the above-mentioned arrangement, the sixth winding 306 and the eighth winding 308 can be directly connected through the fourth through hole 210, which shortens the wiring distance of the sixth winding 306 and the eighth winding 308 and achieves the effect of saving materials. For example, the sixth winding 306 and the eighth winding 308 can be respectively formed by the same wire material passing through the fourth through hole 210, or one end of the sixth winding 306 can pass through the fourth through hole 210 and be welded to the eighth winding 308.

[0075] As a specific example, the seventh winding 307 and the eighth winding 308 are arranged on the second surface 202, i.e., the seventh winding 307 and the fifth winding 305 are arranged on the two surfaces of the flexible substrate 20 facing away from each other, respectively, and the eighth winding 308 and the sixth winding 306 are arranged on the two surfaces of the flexible substrate 20 facing away from each other, respectively.

[0076] It should be noted that the above-mentioned "the seventh winding 307 is arranged corresponding to the fifth winding 305" means that the projection of the seventh winding 307 in the direction perpendicular to the flexible substrate 20 substantially coincides with the projection of the fifth winding 305 in the direction, for example, in the case where the flexible substrate 20 is placed in a flat state, when the seventh winding 307 and the fifth winding 305 are projected onto the flexible substrate 20 along the direction perpendicular to the flexible substrate 20, respectively, the projections of the seventh winding 307 and the fifth winding 305 substantially coincide. The above-mentioned "the winding direction of the seventh winding 307 is the same as that of the fifth winding 305" means that under the same visual angle, the flow direction of the current in the seventh winding 307 is the same as that in the fifth winding 305, i.e., the direction of the magnetic field generated by the current flowing through the seventh winding 307 is the same as that of the magnetic field generated by the current flowing through the fifth winding 305.

[0077] It should be noted that the above "the eighth winding 308 is arranged corresponding to the sixth winding 306" means that the projection of the eighth winding 308 in the direction perpendicular to the flexible substrate 20 substantially coincides with the projection of the sixth winding 306 in the direction, for example, in the case where the flexible substrate 20 is placed in a flat plate shape, when the eighth winding 308 and the sixth winding 306 are respectively projected along the direction perpendicular to the flexible substrate 20 to the flexible substrate 20, the projections of the eighth winding 308 and the sixth winding 306 substantially coincide. The meaning of the above "the winding direction of the eighth winding 308 is the same as the winding direction of the sixth winding 306" is that under the same viewing angle, the flow direction of the current in the eighth winding 308 is the same as the flow direction of the current in the sixth winding 306, that is, the direction of the magnetic field generated by the current flowing through the eighth winding 308 is the same as the direction of the magnetic field generated by the current flowing through the sixth winding 306.

[0078] Through the above arrangement, since the seventh winding 307 and the eighth winding 308 are arranged, the seventh winding 307 and the fifth winding 305 are respectively located on the opposite sides of the flexible substrate 20, and the winding direction of the seventh winding 307 is the same as the winding direction of the fifth winding 305, so that in the case of series connection, the magnetic field generated by the current flowing through the seventh winding 307 can be superimposed with the magnetic field generated by the fifth winding 305, so as to enhance the magnetic field intensity at the position of the fifth winding 305 and the seventh winding 307, thereby enabling the position of the fifth winding 305 and the seventh winding 307 to generate greater force on the mover assembly 22 (see Figure 8 ). Similarly, since the eighth winding 308 and the sixth winding 306 are respectively located on the opposite sides of the flexible substrate 20, and the winding direction of the eighth winding 308 is the same as the winding direction of the sixth winding 306, so that in the case of series connection, the magnetic field generated by the current flowing through the eighth winding 308 can be superimposed with the magnetic field generated by the sixth winding 306, so as to enhance the magnetic field intensity at the position of the eighth winding 308 and the sixth winding 306, thereby enabling the position of the sixth winding 306 and the eighth winding 308 to generate greater force on the mover assembly 22 (see Figure 8 ). The above arrangement enables the flexible circuit board 10 to generate greater force on the mover assembly 22 (see Figure 8 ), thereby enabling the mover assembly 22 (see Figure 8 ) to be more smoothly and more greatly offset in the second direction Y.

[0079] In some embodiments, the number of turns of the seventh winding 307 is the same as the number of turns of the fifth winding 305, the number of turns of the eighth winding 308 is the same as the number of turns of the sixth winding 306, and the number of turns of the fifth winding 305 is the same as the number of turns of the first winding 301. For example, the number of turns of the seventh winding 307, the number of turns of the fifth winding 305, and the number of turns of the first winding 301 can be five turns, six turns, seven turns, or any number of turns.

[0080] Through the above arrangement, since the number of turns of the seventh winding 307 is the same as the number of turns of the fifth winding 305, the strength of the magnetic field generated by the seventh winding 307 is the same as the strength of the magnetic field generated by the fifth winding 305; since the number of turns of the eighth winding 308 is the same as the number of turns of the sixth winding 306, the strength of the magnetic field generated by the eighth winding 308 is the same as the strength of the magnetic field generated by the sixth winding 306. Through the above arrangement, in the case of generating magnetic fields of the same strength, the number of turns of the winding on the single-sided surface of the flexible substrate 20 can be reduced, thereby reducing the volume of the winding on the single-sided surface of the flexible substrate 20, which is conducive to reducing the volume of the flexible substrate 20.

[0081] In some embodiments, the conductive trace 30 further includes a third conductive wire 311 and a fourth conductive wire 312, which can be copper foil traces or copper foil wires, i.e., the third conductive wire 311 and the fourth conductive wire 312 are trace structures of the flexible circuit board 10 itself, rather than external wire structures on the flexible substrate 20. One end of the third conductive wire 311 is electrically connected to the second positive contact 205, and the other end is electrically connected to the seventh winding 307. The third conductive wire 311 and the seventh winding 307 can be connected by welding or integrally formed. One end of the fourth conductive wire 312 is electrically connected to the eighth winding 308, and the other end is electrically connected to the second negative contact 206. The fourth conductive wire 312 and the eighth winding 308 can be connected by welding or integrally formed.

[0082] Through the above arrangement, the third conductive wire 311 realizes the electrical connection between the second positive contact 205 and the seventh winding 307, and when the third conductive wire 311 and the seventh winding 307 are integrally formed, there is no need to perform a connection operation on the third conductive wire 311 and the seventh winding 307, thus facilitating preparation. The fourth conductive wire 312 realizes the electrical connection between the second negative contact 206 and the eighth winding 308, and when the fourth conductive wire 312 and the eighth winding 308 are integrally formed, there is no need to perform a connection operation on the fourth conductive wire 312 and the eighth winding 308, thus facilitating preparation.

[0083] Please refer to Figure 5In some embodiments, the conductive trace 30 further comprises a sixth conductive line 314, which can be a copper foil trace or a copper foil wire, i.e., the sixth conductive line 314 is a trace structure of the flexible circuit board 10 itself rather than a wire structure externally connected to the flexible substrate 20. The sixth conductive line 314 is laid on the first surface 201, one end of the sixth conductive line 314 is electrically connected to the fifth winding 305, and the other end is electrically connected to the sixth winding 306. The sixth conductive line 314 and the fifth winding 305 can be a soldered connection or an integrally formed connection. The sixth conductive line 314 and the sixth winding 306 can be a soldered connection or an integrally formed connection.

[0084] Through the above arrangement, the sixth conductive line 314 realizes the electrical connection between the fifth winding 305 and the sixth winding 306, and when the third conductive line 311 and the seventh winding 307 are integrally formed, the seventh winding 307 and the fifth winding 305 are integrally formed, the fifth winding 305 and the sixth conductive line 314 are integrally formed, the sixth conductive line 314 and the sixth winding 306 are integrally formed, the sixth winding 306 and the eighth winding 308 are integrally formed, and the eighth winding 308 and the fourth conductive line 312 are integrally formed, the same wire can be used to lay along the surface of the flexible substrate 20 to sequentially form the third conductive line 311, the seventh winding 307, the fifth winding 305, the sixth conductive line 314, the sixth winding 306, the eighth winding 308, and the fourth conductive line 312. The above arrangement does not require separate connection operations for each component of the conductive trace 30, thus having the beneficial effects of simple structure and convenient equipment.

[0085] In some embodiments, the first positive contact 203 and the first negative contact 204 are both located on the first surface of the power connection part 213, the second positive contact 205 and the second negative contact 206 are both located on the second surface of the power connection part 213, and the second surface is opposite to the first surface. The first surface is the portion of the first surface 201 of the flexible substrate 20 corresponding to the power connection part 213, and the second surface is the portion of the second surface 202 of the flexible substrate 20 corresponding to the power connection part 213. Through the above arrangement, the layout of the traces of the first circuit and the second circuit is facilitated, thereby reducing the trace area of the conductive trace 30 on the flexible substrate 20, and further facilitating the reduction of the volume of the flexible substrate 20.

[0086] Please refer to Figure 5 and Figure 6In some embodiments, the first positive contact 203, the first negative contact 204, the second positive contact 205, and the second negative contact 206 are all located on the first surface 201 and are all located on the power connection portion 213. The flexible substrate 20 further comprises a fifth through hole 211 and a sixth through hole 212, both of which are located on the power connection portion 213. The third conductive wire 311 passes through the fifth through hole 211, and the fourth conductive wire 312 passes through the sixth through hole 212.

[0087] Through the above arrangement, one end of the third conductive wire 311 is connected to the first positive contact 203 located on the first surface 201. The third conductive wire 311 can extend to the second surface 202 through the fifth through hole 211 and be connected to the seventh winding 307 at the seventh winding 307 located on the second surface 202. One end of the fourth conductive wire 312 is connected to the eighth winding 308 located on the second surface 202. The fourth conductive wire 312 can extend to the first surface 201 through the sixth through hole 212 and be connected to the second negative contact 206 located on the first surface 201. The fifth through hole 211 and the sixth through hole 212 provide space for the routing of the third conductive wire 311 and the fourth conductive wire 312, which can reduce the routing distance of the third conductive wire 311 and the fourth conductive wire 312, thereby saving materials and reducing costs.

[0088] In summary, the present embodiment provides an extended pixel actuator 100. In the extended pixel actuator 100, the first winding 301 and the second winding 302 are arranged side by side along the first direction X, the winding direction of the first winding 301 is opposite to the winding direction of the second winding 302, the first winding 301 is electrically connected to the first positive contact 203, and the second winding 302 is electrically connected to the first negative contact 204. The fifth winding 305 and the sixth winding 306 are arranged side by side along the second direction Y, the second direction Y intersects the first direction X, the fifth winding 305 is electrically connected to the second positive contact 205, one end of the sixth winding 306 is electrically connected to the second negative contact 206, and the other end of the sixth winding 306 is electrically connected to the fifth winding 305. Therefore, after the first loop of the flexible substrate 20 is powered on, the current flows from the first positive contact 203, sequentially flows through the first winding 301, the second winding 302, and returns to the first negative contact 204. The current flows in opposite directions in the first winding 301 and the second winding 302, so that magnetic fields with opposite directions are generated near the first winding 301 and the second winding 302. The magnetic fields can drive the rotor assembly 22 (see Figure 8) along the first direction X, and the magnetic fields generated by the fifth winding 305 and the sixth winding 306 can drive the mover assembly 22 (see Figure 8 ) along the second direction Y.

[0089] Therefore, when the flexible circuit board 10 is powered on, the magnetic fields generated by the first winding 301 and the second winding 302 can drive the mover assembly 22 (see Figure 8 ) along the first direction X, and the magnetic fields generated by the fifth winding 305 and the sixth winding 306 can drive the mover assembly 22 (see Figure 8 ) along the second direction Y, and the first direction X intersects the second direction Y, so that the mover assembly 22 (see Figure 8 ) can be shaken back and forth along two different directions, thereby further improving the effect of expanding the pixels of the display panel, i.e., further improving the resolution and clarity of the display panel, and improving the user experience.

[0090] Further, since the first winding 301, the second winding 302, the fifth winding 305, and the sixth winding 306 are all directly formed by the conductive traces 30 attached to the flexible substrate 20, the thickness and volume of the first winding 301, the second winding 302, the fifth winding 305, and the sixth winding 306 are small, and no solder joints need to be provided on the flexible substrate 20 to separately mount the windings. In summary, the above-mentioned expanded pixel actuator 100 has the beneficial effects of small thickness, small volume, light weight, and convenient installation.

[0091] Please refer to Figure 7 and Figure 8 , the embodiments of the present application also provide a pixel expander 200, which comprises a mounting plate 21, the above-mentioned expanded pixel actuator 100, and the mover assembly 22.

[0092] The mover assembly 22 includes a substrate 221, a glass sheet 222, and a magnet 223. The substrate 221 includes a fixed portion 224 and an elastic portion 225, the fixed portion 224 is connected to the elastic portion 225 and fixed to the mounting plate 21, the elastic portion 225 encloses a hollow portion 226 for light transmission, the glass sheet 222 is arranged in the hollow portion 226, the glass sheet 222 is coaxially arranged with the light transmission port 216 of the extended pixel actuator 100, and the magnet 223 is arranged in the elastic portion 225 and corresponds to the drive winding of the extended pixel actuator 100. Under the interaction of the drive winding of the extended pixel actuator 100 and the magnet 223 of the mover assembly 22, the mover assembly 22 can be offset relative to the extended pixel actuator 100 to make the glass sheet 222 deflect the light passing through the light transmission port 216.

[0093] The mounting plate 21 is used to carry the extended pixel actuator 100 and the mover assembly 22. It can be understood that the mounting plate 21 has a certain rigidity, for example, the mounting plate 21 can be made of plastic, resin or other materials.

[0094] The flexible substrate 20 is fixed to the mounting plate 21, and the first winding 301 and the second winding 302 are arranged on the side of the flexible substrate 20 close to the mounting plate 21.

[0095] The mover assembly 30 includes a substrate 221, a glass sheet 222, and a magnet 223.

[0096] The substrate 221 includes a fixed portion 224 and an elastic portion 225, the fixed portion 224 is arranged on the periphery of the substrate 221 and fixed to the substrate 10, as shown in the fixed portion 224 can be located at the four corners of the substrate 221, the center of the substrate 221 is enclosed by the elastic portion 225 to form a hollow portion 226, the glass sheet 222 is arranged in the hollow portion 226 of the substrate 221, the glass sheet 222 is fixedly connected with the elastic portion 225, and the magnet 223 is arranged on the elastic portion 225. Figure 8

[0097] As a specific example, the magnet 223 can be arranged in four groups, the four groups of magnets 223 are uniformly distributed on the elastic portion 225 of the substrate 221 and correspond to the drive winding of the extended pixel actuator 100. When the extended pixel actuator 100 and the mover assembly 30 are installed, the position of the drive winding is opposite to the position of the magnet 223. The arrangement of multiple groups of drive windings and multiple groups of magnets 223 helps to improve the electromagnetic force between the drive winding and the magnet 223, and further makes the moving frequency between the extended pixel actuator 100 and the mover assembly 30 higher, which helps to improve the resolution.

[0098] ​The connection mode of the glass sheet 222 and the substrate 221, and the connection mode of the magnet 223 and the substrate 221 can be connected by glue. It can be understood that the connection mode of the glass sheet 222 and the substrate 221, and the connection mode of the magnet 223 and the substrate 221 can also be connected in other forms, which is not limited here.

[0099] Through the above setting, in use, the pixel expander 200 is arranged opposite to the display panel, and the expansion pixel actuator 100 is powered on. Under the action of the driving winding and the magnet 223, the mover assembly 30 can drive the glass sheet 222 to move relative to the substrate 10. According to the principle of expanding pixels, the image resolution and clarity of the display panel can be improved, thereby improving the user experience.

[0100] Please refer to Figure 9 The embodiment of the present application also provides an optical-mechanical device 300, which comprises an optical-mechanical shell, an imaging device 31, a lens 32, and a pixel expander 200 as described above. The pixel expander 200 is arranged in the optical-mechanical shell, and the imaging device 31 and the lens 32 are located opposite to each other relative to the expansion pixel actuator 100. The lens 32, the glass sheet 222 of the pixel expander 200, and the imaging device 31 are arranged in sequence along the optical axis of the lens 32. The pixel expander 200 is located on the light path of the light emitted by the imaging device 31. So that the glass sheet 222 can deflect the light. The imaging device 31 can be an imaging equipment such as a display panel or a display. When the optical-mechanical device 300 works, the light emitted by the imaging device 31 passes through the pixel expander 200 to realize pixel expansion, and is emitted through the lens 32.

[0101] The optical-mechanical device 300 provided by the embodiment of the present application can realize pixel expansion through the pixel expander 200, thereby improving the resolution and clarity of the final imaging picture of the imaging device 31, and also has the beneficial effects of small size and convenient assembly.

[0102] Please refer to Figure 10 The embodiment of the present application also provides a near-eye display device 500, which can be an AR device or / and a VR device. The near-eye display device comprises a housing 501 and an optical-mechanical device 300 arranged in the housing 501. The near-eye display device 500 has the beneficial effects of clear display picture, small size, light weight, etc.

[0103] In some embodiments, the near-eye display device 500 further comprises a display lens 502 arranged on the housing 501, and a wearing part 503 arranged on the housing 501. The display lens 502 is used to receive the image generated by the optical-mechanical device 300 and for the user to watch, and the wearing part 503 is used to fix the near-eye display device 500 on the head of the user. Specifically, the wearing part 503 can be an eye lens, a band, an elastic band, etc.

[0104] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

[0105] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features. And these modifications or replacements do not drive the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An extended pixel actuator, characterized in that, The invention includes a flexible circuit board, which comprises a flexible substrate and conductive traces attached to the flexible substrate. The flexible substrate has a light-transmitting port. The conductive traces include a drive winding. The flexible substrate is provided with a first positive contact and a first negative contact, wherein the first positive contact is used to be electrically connected to the positive terminal of the power supply, and the first negative contact is used to be electrically connected to the negative terminal of the power supply. The first positive contact and the first negative contact are electrically connected through the conductive trace to form a first circuit. The drive winding includes: The first winding is electrically connected to the first positive contact; and The second winding has one end electrically connected to the first winding and the other end electrically connected to the first negative contact. The second winding and the first winding are disposed on opposite sides of the light-transmitting port along the first direction, and the winding direction of the second winding is opposite to that of the first winding.

2. The extended pixel actuator as described in claim 1, characterized in that, The flexible substrate has a first through hole and a second through hole; the drive winding further includes a third winding and a fourth winding, wherein: The first winding, the second winding, the third winding, and the fourth winding are electrically connected in series between the first positive contact and the first negative contact; The third winding is disposed corresponding to the first winding and is located on opposite surfaces of the flexible substrate. The third winding and the first winding are electrically connected through the first through hole. The winding direction of the third winding is the same as that of the first winding. The fourth winding is disposed corresponding to the second winding and is located on opposite surfaces of the flexible substrate. The fourth winding and the second winding are electrically connected through the second through hole. The winding direction of the fourth winding is the same as that of the second winding.

3. The extended pixel actuator as described in claim 1 or 2, characterized in that, The flexible substrate includes a power receiving portion, a wiring portion, and a mounting portion, wherein the wiring portion is connected between the power receiving portion and the mounting portion to enable electrical communication between the power receiving portion and the mounting portion; Both the first positive contact and the first negative contact are located in the power receiving part; both the first winding and the second winding are located in the mounting part.

4. The extended pixel actuator as described in claim 3, characterized in that, The flexible substrate is further provided with a second positive contact and a second negative contact, wherein the second positive contact is used to be electrically connected to the positive terminal of the power supply, and the second negative contact is used to be electrically connected to the negative terminal of the power supply. The second positive contact and the second negative contact are electrically connected through the conductive trace to form a second circuit. The drive winding further includes a fifth winding and a sixth winding; the fifth winding and the sixth winding are arranged on opposite sides of the light-transmitting port along a second direction, which intersects with the first direction; the fifth winding is electrically connected to the second positive contact, one end of the sixth winding is electrically connected to the second negative contact, and the other end is electrically connected to the fifth winding; the winding direction of the fifth winding is opposite to that of the sixth winding, and the number of turns of the fifth winding is the same as that of the sixth winding.

5. The extended pixel actuator as described in claim 4, characterized in that, The flexible substrate is provided with a third through hole and a fourth through hole; The drive winding further includes a seventh winding and an eighth winding, wherein: The fifth, sixth, seventh, and eighth windings are electrically connected in series between the second positive contact and the second negative contact. The seventh winding is correspondingly arranged with the fifth winding and is located on opposite surfaces of the flexible substrate. The seventh winding and the fifth winding are electrically connected through the third through hole. The winding direction of the seventh winding is the same as that of the fifth winding. The eighth winding is correspondingly arranged with the sixth winding and is located on opposite surfaces of the flexible substrate. The eighth winding and the sixth winding are electrically connected through the fourth through hole. The winding direction of the eighth winding is the same as that of the sixth winding.

6. The extended pixel actuator as described in claim 5, characterized in that, The first positive contact and the first negative contact are both located on the first surface of the contact portion, and the second positive contact and the second negative contact are both located on the second surface of the contact portion, with the second surface opposite to the first surface.

7. The extended pixel actuator as described in claim 1, characterized in that, Both the first winding and the second winding are composed of the conductive traces that are looped together, and each loop of the conductive traces constituting the drive winding is in the same plane.

8. A pixel expander, characterized in that, The device includes a mounting plate, a mover assembly, and an extended pixel actuator as described in any one of claims 1 to 7, wherein the mover assembly includes a substrate, a glass sheet, and a magnet; the substrate includes a fixed portion and an elastic portion, the fixed portion is connected to the elastic portion and fixed to the mounting plate, the elastic portion encloses a hollow portion for light transmission, the glass sheet is disposed in the hollow portion, the glass sheet is coaxially disposed with the light-transmitting port of the extended pixel actuator, and the magnet is disposed in the elastic portion and corresponds to the driving winding of the extended pixel actuator; under the interaction of the driving winding of the extended pixel actuator and the magnet of the mover assembly, the mover assembly can be offset relative to the extended pixel actuator so that the glass sheet deflects the light passing through the light-transmitting port.

9. An optomechanical device, characterized in that, The device includes an optical engine housing, an imaging device, a lens, and a pixel expander as described in claim 8; the pixel expander is disposed within the optical engine housing, the imaging device and the lens are respectively located on opposite sides of the expanded pixel actuator, and the lens, the glass plate of the pixel expander, and the imaging device are arranged sequentially along the optical axis of the lens; the glass plate of the pixel expander is located in the optical path of the light emitted by the imaging device, so that the glass plate can deflect the light.

10. A near-eye display device, characterized in that, It includes a housing and the optomechanical device as described in claim 9, wherein the optomechanical device is disposed in the housing.

Images