An electrically controlled magnetic sheet display device

Abstract

The utility model relates to display technical field, concretely relates to a kind of electric control magnetic sheet display device, including multiple pixel units, each pixel unit includes: fixed coil assembly, it includes a annular base material and annular electromagnetic coil, and annular base material middle part is equipped with hollow notched; Magnetic rotating assembly includes a magnetic base made of permanent magnetic material, annular conductive coil etched on the magnetic base, and a rotating shaft;Magnetic rotating assembly is rotatably arranged in the hollow notched of fixed coil assembly by rotating shaft, so that magnetic rotating assembly can rotate in the hollow notched around rotating shaft;Multiple pixel units are horizontally arranged to form pixel array.The device discards traditional liquid crystal material, and the fixed coil assembly and magnetic rotating assembly constitute core light valve, the deflection angle of magnetic rotating assembly is accurately driven by controlling the current of coil on magnetic rotating assembly, to directly regulate and control light passing, without polarized light, efficient light modulation is realized.

Description

Technical Field

[0001] This utility model relates to the field of display technology, specifically to an electrically controlled magnetic sheet display device. Background Technology

[0002] Display technology is a core component of modern information society, and its performance directly determines the image quality, energy efficiency, and cost of display devices. Currently, the mainstream spatial light modulation technologies include LCD, LCOS, and DLP, but these technologies all have certain inherent defects.

[0003] First, liquid crystal display (LCD) technology is a transmissive technology that modulates the on / off state and grayscale of pixels by controlling the deflection of liquid crystal molecules through an electric field. Its main drawback is that the control circuit is located on the side of the pixel, occupying a large area of ​​the opening, resulting in extremely low light transmittance, typically only 5%-10%, causing serious waste of light energy and thus limiting the brightness and energy efficiency of the device.

[0004] Secondly, as a reflective technology, Liquid Crystal on Silicon (LCOS) places the control circuitry below the reflective surface, resulting in a significantly higher aperture ratio than LCDs and a reflectivity exceeding 70%. However, like LCDs, LCOS technology relies on the birefringence effect of liquid crystals for optical modulation, requiring the use of polarized light. At least half of the unpolarized component of the incident light is absorbed by the polarizer, leading to a relatively low overall light utilization efficiency.

[0005] Digital light processing (DLP) technology achieves optical modulation by controlling the deflection angle of a micromirror array. Its control structure is located on the back of the mirror, resulting in a high aperture ratio and the ability to operate without polarized light, making it the most efficient of the three technologies mentioned. However, DLP products are expensive, and the supply channels are limited and unstable, restricting its widespread application and market competitiveness.

[0006] In summary, existing mainstream display technologies have significant shortcomings in terms of luminous efficiency, structural complexity, or cost. Therefore, there is an urgent need in this field for a new type of display device. Utility Model Content

[0007] (a) Technical problems to be solved This utility model addresses the above-mentioned problems by proposing an electrically controlled magnetic sheet display device, which aims to solve the problems of low light efficiency in existing LCD and LCOS display technologies and high cost in DLP display technology.

[0008] (II) Technical Solution To achieve the above objectives, this utility model provides an electrically controlled magnetic sheet display device, comprising: Multiple pixel units, each pixel unit including: A fixed coil assembly includes an annular substrate and an annular electromagnetic coil etched on the annular substrate, wherein the annular substrate has a hollowed-out slot in the middle. A magnetic rotating assembly includes a magnetic substrate made of a permanent magnet material, an annular conductive coil etched on the magnetic substrate, and a rotating shaft. The magnetic rotating component is rotatably disposed in the hollow slot of the fixed coil component via the rotating shaft, so that the magnetic rotating component can rotate around the rotating shaft in the hollow slot. The multiple pixel units are arranged horizontally to form a pixel array.

[0009] Furthermore, the annular electromagnetic coil in the fixed coil assembly is formed on an annular insulating substrate by an etching process.

[0010] Furthermore, the annular conductive coil in the magnetic rotating assembly is formed on a permanent magnet material substrate by an etching process.

[0011] Furthermore, the rotation angle of the magnetic rotating component is controlled by the magnitude of the current in its annular conductive coil.

[0012] Furthermore, the pixel unit is in the maximum opening state of the light valve when no current passes through the annular conductive coil of the magnetic rotating component.

[0013] Furthermore, the rotation direction of the magnetic rotating component is determined by the direction of the current flowing through it.

[0014] Furthermore, the shape of the magnetic rotating component is adapted to the size of the hollowed-out slot.

[0015] Furthermore, a protective glass layer is provided on the front and back sides of the pixel array.

[0016] (III) Beneficial Effects Compared with existing technologies, the electrically controlled magnetic sheet display device provided by this utility model fundamentally solves the above-mentioned problems through its unique electrically controlled magnetic sheet structure. Specifically, this device abandons traditional liquid crystal materials and uses a core light valve composed of a fixed coil assembly and a magnetic rotating assembly. By controlling the current in the coil of the magnetic rotating assembly, its deflection angle is precisely driven, thereby directly controlling the passage of light and achieving efficient light modulation without polarization. Its reflective working mode is similar to DLP, with an extremely high aperture ratio and luminous efficacy far exceeding that of LCD and LCOS. At the same time, due to its simple structure, the core components can be fabricated using conventional etching processes, significantly reducing manufacturing costs while achieving high luminous efficacy and a wide color gamut display. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a pixel unit disclosed in this application.

[0018] Figure 2 This is a schematic diagram of a horizontally expanded pixel unit array disclosed in this application.

[0019] Figure 3 This is a schematic diagram of a pixel opening principle disclosed in this application.

[0020] Figure 4 This is a schematic diagram of pixel grayscale adjustment disclosed in this application.

[0021] The reference numerals shown in the figure are: 1, pixel unit; 2, fixed coil assembly; 3, magnetic rotating assembly; 4, rotating shaft; 20, annular insulating substrate; 21, annular electromagnetic coil; 30, magnetic substrate; 31, annular conductive coil. Detailed Implementation

[0022] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] This invention provides an electrically controlled magnetic sheet display device to solve the problems of low luminous efficiency and high cost in existing display technologies. The core of this device lies in controlling the on / off state of light through pure electromagnetic principles, achieving a display effect with high luminous efficiency and high aperture ratio.

[0026] like Figure 1 , Figure 2As shown, the electronically controlled magnetic display device includes a pixel array composed of multiple pixel units 1 arranged horizontally. Each pixel unit 1 is the basic unit constituting the display function, and its specific structure is as follows: Each pixel unit 1 includes a fixed coil assembly 2 and a magnetic rotating assembly 3. The fixed coil assembly 2 consists of an annular insulating substrate 20 and an annular electromagnetic coil 21 formed on the annular insulating substrate 20 by an etching process; the annular insulating substrate 20 has a hollowed-out slot 201 in the middle. The magnetic rotating assembly 3 consists of a magnetic substrate 30 made of permanent magnet material, an annular conductive coil 31 formed on the magnetic substrate 30 by an etching process, and a rotating shaft 4 that supports the rotation of the assembly.

[0027] The magnetic rotating component 3 is rotatably disposed within the slot 201 of the fixed coil component 2 via its rotating shaft 4. In particular, the external dimensions of the magnetic rotating component 3 are adapted to the size of the slot 201 of the fixed coil component 2, ensuring that it can rotate smoothly within the slot 201 without generating excessive gaps.

[0028] Its working principle and control process are as follows: like Figure 3 , Figure 4 As shown, in the initial state, that is, when no current flows through the annular conductive coil 31 of the magnetic rotating component 3, since the fixed coil component 2 is not energized and there is no external magnetic field, the magnetic rotating component 3 maintains a specific orientation due to the inherent magnetism of its permanent magnet material substrate, and the light valve is in a free state at this time.

[0029] When it is necessary to turn off a pixel or adjust its grayscale, the annular electromagnetic coil 21 of the fixed coil assembly 2 is first energized, generating a stable magnetic field perpendicular to the substrate plane in the central cutout slot 201 area. Subsequently, a control current is supplied to the annular conductive coil 31 of the magnetic rotating assembly 3. This energized coil experiences an Ampere force in the perpendicular magnetic field generated by the fixed coil, the direction of which follows the left-hand rule and is determined by the direction of the current. This force generates torque, driving the magnetic rotating assembly 3 to deflect around its rotation axis.

[0030] By controlling the magnitude of the current flowing into the annular conductive coil 31 of the magnetic rotating component 3, the magnitude of the electromagnetic force acting on it can be linearly adjusted, thereby controlling its rotation angle. Changes in the rotation angle directly adjust the effective opening size of the light valve, enabling continuous control of pixel grayscale. By changing the direction of the current, the direction of the electromagnetic force can be changed, thus controlling the magnetic rotating component 3 to rotate in the opposite direction.

[0031] Finally, a protective glass layer is provided on both the front and back sides of the entire pixel array to protect the delicate internal pixel unit 1 structure from damage and contamination, while also forming a stable optical channel.

[0032] In summary, this invention, through the aforementioned structure and working principle, utilizes electromagnetic force to directly drive the rotation of a magnetic sheet to control light, eliminating the need for liquid crystals and polarizers. This not only significantly improves light utilization efficiency but also results in a simple structure and low cost.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An electrically controlled magnetic sheet display device, characterized in that, include: Multiple pixel units, each pixel unit including: A fixed coil assembly includes an annular substrate and an annular electromagnetic coil etched on the annular substrate, wherein the annular substrate has a hollowed-out slot in the middle. A magnetic rotating assembly includes a magnetic substrate made of a permanent magnet material, an annular conductive coil etched on the magnetic substrate, and a rotating shaft. The magnetic rotating component is rotatably disposed in the hollow slot of the fixed coil component via the rotating shaft, so that the magnetic rotating component can rotate around the rotating shaft within the hollow slot. The multiple pixel units are arranged horizontally to form a pixel array.

2. The electrically controlled magnetic sheet display device as described in claim 1, characterized in that, The ring-shaped electromagnetic coil in the fixed coil assembly is formed on a ring-shaped insulating substrate by an etching process.

3. The electrically controlled magnetic sheet display device as described in claim 1, characterized in that, The annular conductive coil in the magnetic rotating assembly is formed on a permanent magnet material substrate by an etching process.

4. The electrically controlled magnetic sheet display device as described in claim 1, characterized in that, The rotation angle of the magnetic rotating component is controlled by the magnitude of the current in its annular conductive coil.

5. The electrically controlled magnetic sheet display device as described in claim 1, characterized in that, The pixel unit is in the maximum opening state of the light valve when no current passes through the annular conductive coil of the magnetic rotating component.

6. The electrically controlled magnetic sheet display device as described in claim 1, characterized in that, The direction of rotation of the magnetic rotating component is determined by the direction of the current flowing through it.

7. The electrically controlled magnetic sheet display device as described in claim 1, characterized in that, The shape of the magnetic rotating component is adapted to the size of the hollowed-out slot.

8. The electrically controlled magnetic sheet display device as described in claim 1, characterized in that, A protective glass layer is provided on both the front and back sides of the pixel array.

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