Light-emitting assembly, and electronic device and control method therefor

Abstract

A light-emitting assembly (1), and an electronic device and a control method therefor. The light-emitting assembly (1) comprises a light-emitting element (10) and a liquid-crystal light adjustment sheet (20), wherein light emitted by the light-emitting element (10) passes through the liquid-crystal light adjustment sheet (20) and then exits; the liquid-crystal light adjustment sheet (20) comprises at least two layers of liquid crystal assemblies (21), which are stacked, each liquid crystal assembly (21) comprising a liquid crystal molecular layer (211); and when at least one layer of liquid crystal assembly (21) is in a power-off state, light emitted by the light-emitting element (10) is scattered by the liquid crystal molecular layer (211) in the liquid crystal assembly (21) in a power-off state and then exits. By means of adjusting the number of layers of the liquid crystal assemblies (21) in power-off states, the effect of adjusting the light intensity of scattered light emitted by the light-emitting assembly (1) is achieved, thereby better meeting light supplementing requirements.

Description

Light-emitting components, electronic devices and their control methods

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202410507931.4, filed on April 25, 2024, entitled "Light Emitting Component, Electronic Device and Control Method Thereof", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of electronic equipment technology, and in particular to a light-emitting component, an electronic device, and a control method thereof. Background Technology

[0004] Light-emitting components are widely used in electronic devices. Taking mobile phones as an example, they typically include light-emitting components such as fill lights or flashes. During video recording, fill lights or flashes can be used to provide supplementary lighting and improve the quality of the photos. In related technologies, the brightness of light-emitting components in electronic devices can only be adjusted by changing the current or voltage supplied to them; they do not have the ability to emit diffused light. If it is necessary for the light-emitting components in these technologies to produce diffused light, a diffuser needs to be placed over them. However, after placing a diffuser over the light-emitting components, the intensity of the emitted light will decrease.

[0005] Therefore, those skilled in the art urgently need to provide a light-emitting component that can switch between a scattered light state and a bright light state. Summary of the Invention

[0006] In a first aspect, embodiments of this application provide a light-emitting component.

[0007] The light-emitting component provided in this application includes: a light-emitting element and a liquid crystal dimming sheet; the light emitted by the light-emitting element is emitted after passing through the liquid crystal dimming sheet; the liquid crystal dimming sheet includes at least two stacked liquid crystal components, each liquid crystal component including a liquid crystal molecule layer; when at least one of the liquid crystal components is in a power-off state, the light emitted by the light-emitting element is emitted after being scattered by the liquid crystal molecule layer in the liquid crystal component in the power-off state.

[0008] Optionally, the light-emitting component further includes a collimating optical component, which is used to direct the light emitted by the light-emitting element toward the liquid crystal dimming sheet along the thickness direction of the liquid crystal dimming sheet.

[0009] Optionally, the collimating optical component includes a first reflector and a second reflector, wherein the second reflector is a collimating reflective element; the first reflector is disposed between the light-emitting element and the liquid crystal dimming sheet, a first reflective surface is provided on the side of the first reflector facing the light-emitting element, the second reflector is covered on the side of the first reflector with the first reflective surface, a second reflective surface is provided on the side of the second reflector facing the first reflective surface, the second reflective surface and the first reflective surface are spaced apart, and the light emitted by the light-emitting element is reflected by the first reflective surface and the second reflective surface, and then directed to the liquid crystal dimming sheet through the annular gap between the second reflective surface and the first reflective surface.

[0010] Optionally, the light-emitting component is a fill light or a flash.

[0011] Secondly, embodiments of this application provide an electronic device.

[0012] The electronic device provided in this application includes any of the light-emitting components provided in this application.

[0013] Thirdly, embodiments of this application provide a control method for an electronic device.

[0014] The control method for an electronic device provided in this application embodiment is applicable to any electronic device provided in this application embodiment. The control method includes: receiving a control command; and, when the light-emitting element is in a light-emitting state, adjusting the power supply state of each liquid crystal component in response to the control command to adjust the light emission mode of the light-emitting component.

[0015] Optionally, when the control command is a first light emission mode command, adjusting the power supply state of each liquid crystal component specifically includes: supplying power to each liquid crystal component so that the optical axis of the liquid crystal molecules in each liquid crystal layer is parallel to the thickness direction of the liquid crystal dimming sheet.

[0016] Optionally, when the control command is a second light emission mode command, adjusting the power supply state of each liquid crystal component specifically includes: stopping the power supply to each liquid crystal component so that the optical axes of the liquid crystal molecules in each liquid crystal molecular layer are randomly distributed.

[0017] Optionally, when the control command is a third light emission mode command, adjusting the power supply state of each liquid crystal component specifically includes: stopping power supply to the liquid crystal component with the furthest distance from the light-emitting element among the at least two liquid crystal components, and supplying power to the remaining liquid crystal components.

[0018] Optionally, the liquid crystal component further includes a first electrode and a second electrode, which are respectively disposed on opposite sides of the liquid crystal molecule layer. The light-emitting surface of the liquid crystal dimming sheet includes a first light-emitting region and a second light-emitting region. When the control command is a fourth light-emitting mode command, adjusting the power supply state of each liquid crystal component specifically includes: supplying power to the regions of each first electrode and each second electrode opposite to the first light-emitting region, so that the optical axis of the liquid crystal molecules in each liquid crystal molecule layer opposite to the first light-emitting region is parallel to the thickness direction of the liquid crystal dimming sheet; stopping the supply of power to the regions of each first electrode and each second electrode opposite to the second light-emitting region, so that the optical axis of the liquid crystal molecules in each liquid crystal molecule layer opposite to the second light-emitting region is randomly distributed.

[0019] The above-described technical solutions adopted in the embodiments of this application can achieve the following beneficial effects:

[0020] In the embodiments of this application, when it is necessary for the light-emitting component to emit scattered light, at least one layer of liquid crystal component can be in a power-off state. In the power-off state, the optical axes of the liquid crystal molecules in the liquid crystal component are randomly aligned, and the liquid crystal molecule layer in the liquid crystal component can produce a light scattering effect to meet the requirement of scattered light supplementation. When it is necessary for the light-emitting component to emit conventional bright light, each layer of liquid crystal component can be in a power-on state. The liquid crystal component in the power-on state is transparent to meet the conventional bright light supplementation requirement.

[0021] Furthermore, by adopting the solution provided in the embodiments of this application, the light intensity of the scattered light emitted by the light-emitting component can be adjusted by adjusting the number of layers of the liquid crystal component in the power-off state, which can better match the supplementary lighting requirements. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 is a schematic diagram of a light-emitting component provided in an embodiment of this application;

[0024] Figure 2 shows an arrangement of liquid crystal molecules in an electric field according to an embodiment of this application;

[0025] Figure 3 shows an arrangement of liquid crystal molecules in their natural state according to an embodiment of this application;

[0026] Figure 4 is a schematic diagram of a light-emitting component provided in an embodiment of this application, showing that both the lower liquid crystal component and the upper liquid crystal component are in a powered state.

[0027] Figure 5 is a schematic diagram of the light emission effect of the light-emitting component shown in Figure 4;

[0028] Figure 6 is a schematic diagram of a light-emitting component provided in an embodiment of this application, showing a situation where both the lower liquid crystal component and the upper liquid crystal component are in a power-off state.

[0029] Figure 7 is a schematic diagram of the light emission effect of the light-emitting component shown in Figure 6;

[0030] Figure 8 is a schematic diagram of a light-emitting component provided in an embodiment of this application, showing a situation where the lower liquid crystal component is in a powered-on state and the upper liquid crystal component is in a powered-off state.

[0031] Figure 9 is a schematic diagram of the light emission effect of the light-emitting component shown in Figure 8;

[0032] Figure 10 is a schematic diagram of a light-emitting component provided in an embodiment of this application, showing that the electrodes of a portion of the lower liquid crystal component and the upper liquid crystal component are in an energized state.

[0033] Figure 11 is a schematic diagram of the light emission effect of the light-emitting component shown in Figure 10;

[0034] Figure 12 is a schematic diagram of the light emission effect of a light-emitting component provided in an embodiment of this application;

[0035] Figure 13 is a schematic diagram of the light emission effect of another light-emitting component provided in an embodiment of this application;

[0036] Figure 14 is a schematic diagram of the light emission effect of another light-emitting component provided in the embodiment of this application;

[0037] Figure 15 is a flowchart of a control method for an electronic device provided in an embodiment of this application.

[0038] Explanation of reference numerals in the attached drawings: 1-Light-emitting component; 10-Light-emitting element; 20-Liquid crystal dimming sheet; 21-Liquid crystal component; 211-Liquid crystal molecule layer; 2111-Liquid crystal molecule; 212-First electrode; 213-Second electrode; 22-First light-transmitting substrate; 23-Second light-transmitting substrate; 24-Third light-transmitting substrate; 25-First frame; 26-Second frame; 30-Collimating optical component; 31-First reflector; 311-First reflective surface; 32-Second reflector; 321-Second reflective surface; 322-Perforation; 40-Annular spacer area. Detailed Implementation

[0039] To make the purpose, technical solutions, and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the specific embodiments of this application and the corresponding drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0040] In the description of this application, it should be noted that, unless otherwise expressly 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] Furthermore, although the terminology used in this application is selected from commonly known and used terms, some terms mentioned in this application specification may have been selected by the applicant at his or her own discretion, and their detailed meanings are explained in the relevant sections of this description.

[0042] Furthermore, this application is required to be understood not only through the actual terms used, but also through the meaning implied by each term.

[0043] The technical solutions provided by various embodiments of this application are described in detail below with reference to the accompanying drawings. This application provides a light-emitting component. Referring to Figures 1 to 14, the light-emitting component 1 provided in this application includes: a light-emitting element 10 and a liquid crystal dimming sheet 20. Light emitted from the light-emitting element 10 is emitted after passing through the liquid crystal dimming sheet 20. Exemplarily, the light-emitting component 1 is a fill light or a flashlight. The light-emitting element 10 can be a light-emitting diode (LED). The liquid crystal dimming sheet 20 includes liquid crystal molecules. Liquid crystal molecules are a substance between liquid and solid, possessing the characteristic that the molecular arrangement can be controlled by an electric field. For example, the liquid crystal molecules of the liquid crystal dimming sheet 20 can be polymer dispersed liquid crystal (PDLC), cholesteric liquid crystal, etc.

[0044] In the embodiments of this application, the liquid crystal dimming film 20 includes at least two stacked liquid crystal components 21. The liquid crystal component 21 includes a liquid crystal molecule layer 211. When at least one liquid crystal component 21 is in a power-off state, the light emitted by the light-emitting element 10 is scattered by the liquid crystal molecule layer 211 in the liquid crystal component 21 in the power-off state and then emitted.

[0045] To help those skilled in the art understand the principle of the solution provided in the embodiments of this application, the principle of the liquid crystal dimming sheet 20 adjusting the light emission effect is briefly described below with reference to the accompanying drawings.

[0046] Referring to Figure 2, when the liquid crystal dimming sheet 20 is subjected to an electric field, the optical axes of the liquid crystal molecules 2111 of the liquid crystal dimming sheet 20 are arranged in an orderly manner. Referring to Figure 4, for example, the optical axes of the liquid crystal molecules 2111 can be parallel to the thickness direction of the liquid crystal dimming sheet 20. Thus, the liquid crystal dimming sheet 20 constitutes a uniform medium, and incident light will not be scattered; in this case, the liquid crystal dimming sheet 20 is transparent. Referring to Figures 3 and 6, in the natural state (when the liquid crystal dimming sheet 20 is de-energized), the optical axes of the liquid crystal molecules 2111 of the liquid crystal dimming sheet 20 are arranged randomly. Light incident on the liquid crystal dimming sheet 20 is scattered by the liquid crystal molecules 2111 and then emitted through the liquid crystal dimming sheet 20.

[0047] Therefore, using the solution provided in this application embodiment, when it is necessary for the light-emitting component 1 to emit scattered light, at least one layer of liquid crystal component 21 can be in a power-off state. In the power-off state, the optical axes of the liquid crystal molecules 2111 in the liquid crystal component 21 are randomly arranged, and the liquid crystal molecule layer 211 in the liquid crystal component 21 can produce a light scattering effect to meet the requirement of scattered light supplementation. When it is necessary for the light-emitting component 1 to emit conventional bright light, each layer of liquid crystal component 21 can be in a power-on state. The liquid crystal component 21 in the power-on state is transparent to meet the conventional bright light supplementation requirement.

[0048] Furthermore, by adopting the solution provided in this application embodiment, the light intensity of the scattered light emitted by the light-emitting component 1 can be adjusted by adjusting the number of layers of the liquid crystal component 21 in the power-off state, which can better match the supplementary lighting requirements.

[0049] In some embodiments, the light-emitting component 1 further includes a collimating optical component 30. The collimating optical component 30 is used to direct the light emitted by the light-emitting element 10 along the thickness direction of the liquid crystal dimming sheet 20. It should be noted that collimation, simply put, means keeping the light rays parallel. Therefore, in other words, the collimating optical component 30 is used to ensure that the light emitted by the light-emitting element 10 is substantially parallel to the thickness direction of the liquid crystal dimming sheet 20. It should also be noted that the collimating optical component 30 can be configured using solutions from related technologies.

[0050] Of course, to enable those skilled in the art to better implement the solutions provided in the embodiments of this application, a specific collimating optical component 30 is provided below for reference.

[0051] Referring to Figure 1, the collimating optical assembly 30 includes a first reflector 31 and a second reflector 32, wherein the second reflector 32 is a collimating reflective element. The first reflector 31 is disposed between the light-emitting element 10 and the liquid crystal dimming sheet 20. A first reflective surface 311 is provided on the side of the first reflector 31 facing the light-emitting element 10, and the second reflector 32 covers the side of the first reflector 31 with the first reflective surface 311. A second reflective surface 321 is provided on the side of the second reflector 32 facing the first reflective surface 311, and the second reflective surface 321 and the first reflective surface 311 are spaced apart. The light emitted by the light-emitting element 10 is reflected by the first reflective surface 311 and the second reflective surface 321, and then directed onto the liquid crystal dimming sheet 20 through the annular gap 40 between the second reflective surface 321 and the first reflective surface 311.

[0052] In this way, light can be reflected by the first reflective surface 311 to the second reflective surface 321, which allows the light to be directed toward the liquid crystal dimming sheet 20 in a direction parallel to the thickness direction of the liquid crystal dimming sheet 20. In addition, under the blocking effect of the first reflective surface 311, the light can be directed toward the liquid crystal dimming sheet 20 in a ring shape, thereby achieving a ring-shaped supplementary lighting effect.

[0053] Furthermore, in some embodiments, the first reflective surface 311 may be a first reflective coating, and the second reflective surface 321 may be a second reflective coating. The first reflective surface 311 and the second reflective surface 321 may be arc-shaped surfaces to achieve a light-focusing effect and reduce light loss during reflection. The first reflective element 31 may be bonded to the liquid crystal dimming sheet 20, and the second reflective element 32 may be disposed outside the first reflective element 31, with the side of the second reflective element 32 facing the liquid crystal dimming sheet 20 bonded to it. In some embodiments, a perforation 322 may be provided at the portion of the second reflective element 32 opposite to the first reflective element 31. A light-emitting element 10 is disposed at the perforation 322, and the light-emitting element 10 emits light towards the first reflective surface 311.

[0054] Referring to Figure 1, in some embodiments, the liquid crystal component 21 includes a liquid crystal molecular layer 211, a first electrode 212, and a second electrode 213. Both the first electrode 212 and the second electrode 213 are transparent electrodes. The first electrode 212 and the second electrode 213 are respectively disposed on both sides of the liquid crystal molecular layer 211, and are respectively connected to a power supply. Thus, referring to Figure 2, when the power supply supplies power to the first electrode 212 and the second electrode 213, an electric field is formed between them, allowing the liquid crystal molecular layer 211 to align in an orderly manner. Referring to Figure 3, when the power supply stops supplying power to the first electrode 212 and the second electrode 213, the liquid crystal molecular layer 211 switches from an ordered arrangement to a disordered arrangement, and the liquid crystal dimming plate 20 produces a light scattering effect, thereby making the light emitted by the light-emitting component 1 softer.

[0055] In some embodiments, the first electrode 212 includes a plurality of sub-electrodes. The sub-electrodes are used to adjust the arrangement of liquid crystal molecules in the regions of the liquid crystal layer 211 corresponding to the sub-electrodes. When the sub-electrodes are energized, the liquid crystal molecules in the regions of the liquid crystal layer 211 corresponding to the sub-electrodes are arranged in an ordered manner; when the sub-electrodes are de-energized, the liquid crystal molecules in the regions of the liquid crystal layer 211 corresponding to the sub-electrodes are arranged in a disordered manner.

[0056] For example, the first electrode 212 is divided into a first sub-electrode, a second sub-electrode, and a third sub-electrode. When the first and second sub-electrodes are energized, the liquid crystal molecules in the region of the liquid crystal layer 211 corresponding to the first sub-electrode are arranged in an orderly manner. When the second and third sub-electrodes are de-energized, the liquid crystal molecules in the region of the liquid crystal layer 211 corresponding to the second sub-electrode are arranged in a disordered manner, and the liquid crystal molecules in the region of the liquid crystal layer 211 corresponding to the third sub-electrode are also arranged in a disordered manner. In this way, the arrangement of liquid crystal molecules in each region of the liquid crystal layer 211 can be flexibly adjusted according to requirements by adjusting the energization state of the sub-electrodes.

[0057] Furthermore, in some embodiments, the deflection angle of liquid crystal molecules in each region of the liquid crystal molecule layer 211 can be controlled by adjusting the electric field strength between each sub-electrode and the second electrode 213, thereby achieving the effect of adjusting the focal length of the light-emitting component.

[0058] In some other embodiments, the first electrode 212 can be patterned. Thus, by controlling whether the patterned first electrode 212 is energized or de-energized, an electric field can be provided to the liquid crystal molecules, causing them to deflect and thus changing the transmittance of the liquid crystal dimming sheet 20. This results in variations in the intensity of the light emitted by the light-emitting component 1. Alternatively, by controlling the energized area of ​​the patterned first electrode 212, the light emitted by the light-emitting component 1 can be made to have different shapes.

[0059] In some other embodiments, the second electrode 213 can be patterned. Thus, by controlling whether the patterned second electrode 213 is energized or de-energized, an electric field can be provided to the liquid crystal molecules, causing them to deflect and thus changing the transmittance of the liquid crystal dimming sheet 20. This results in variations in the intensity of the light emitted by the light-emitting component 1. Alternatively, by controlling the energized area of ​​the patterned second electrode 213, the light emitted by the light-emitting component 1 can be made to have different shapes.

[0060] Of course, in another embodiment, the second electrode 213 can also be a conventional electrode. Both the first electrode 212 and the second electrode 213 are connected to a power supply. The power supply can supply power to the entire surface of the second electrode 213, and can selectively supply power to a portion of the first electrode 212. Thus, no electric field is generated between the region of the first electrode 212 that is in a de-energized state and the second electrode 213. Consequently, the liquid crystal layer 211 opposite to the region of the first electrode 212 that is in a de-energized state is not affected by the electric field, and thus, the optical axis of the liquid crystal layer 211 opposite to the region of the first electrode 212 that is in a de-energized state is randomly distributed.

[0061] It should also be noted that the technique of adjusting the arrangement or tilt angle of liquid crystal molecules in different regions of the liquid crystal layer by adjusting the electric field applied to the liquid crystal layer can also be referenced from related technologies, and its working principle will not be described in detail here.

[0062] Referring to Figure 1, in some embodiments, the liquid crystal dimming sheet 20 further includes a first light-transmitting substrate 22, with two adjacent liquid crystal components 21 respectively disposed on both sides of the first light-transmitting substrate 22. In this way, by disposing two adjacent liquid crystal components 21 on both sides of the first light-transmitting substrate 22, it is possible to avoid separately disposing of a first light-transmitting substrate 22 for each adjacent liquid crystal component 21, thereby eliminating at least one first light-transmitting substrate 22 and thus reducing the thickness of the liquid crystal dimming sheet 20.

[0063] Referring to FIG1, in some embodiments, the liquid crystal dimming sheet 20 further includes a second light-transmitting substrate 23 and a third light-transmitting substrate 24. The second light-transmitting substrate 23 is disposed on the side of the liquid crystal dimming sheet 20 facing the light-emitting element 10. The third light-transmitting substrate 24 is disposed on the side of the liquid crystal dimming sheet 20 away from the light-emitting element 10.

[0064] For example, the material of the first light-transmitting substrate 22 can be glass, polyethylene terephthalate (PET), polyimide (PI), etc. The materials of the second light-transmitting substrate 23 and the third light-transmitting substrate 24 are also selected with reference to the material of the first light-transmitting substrate 22.

[0065] It should be noted that, taking an example with two liquid crystal components 21, one liquid crystal component 21 is disposed between the second light-transmitting substrate 23 and the first light-transmitting substrate 22, and the other liquid crystal component 21 is disposed between the first light-transmitting substrate 22 and the third light-transmitting substrate 24. The gap between the outer periphery of the second light-transmitting substrate 23 and the first light-transmitting substrate 22 can be sealed by the first adhesive frame 25, and the gap between the outer periphery of the first light-transmitting substrate 22 and the third light-transmitting substrate 24 can be sealed by the second adhesive frame 26, to prevent leakage of the liquid crystal components 21.

[0066] To enable those skilled in the art to better understand the usage of the light-emitting component 1 provided in the embodiments of this application, the following description mainly uses two liquid crystal components 21 as an example to illustrate the operation of the light-emitting component 1. For ease of explanation, referring to FIG4, the liquid crystal component 21 closer to the light-emitting element 10 is referred to as the lower liquid crystal component, and the liquid crystal component 21 farther from the light-emitting element 10 is referred to as the upper liquid crystal component.

[0067] Referring to Figures 4 and 5, in some embodiments, when both the lower and upper liquid crystal components are energized, the liquid crystal molecules in the lower and upper liquid crystal components are arranged in an orderly manner, and light is emitted from the liquid crystal dimming sheet 20 in a brighter manner under the transmission effect of the lower and upper liquid crystal components.

[0068] Referring to Figures 6 and 7, in some embodiments, when both the lower and upper liquid crystal components are in a power-off state, the liquid crystal molecules of the lower and upper liquid crystal components are arranged randomly, and the light is emitted from the liquid crystal dimming sheet 20 in a softer manner under the scattering effect of the lower and upper liquid crystal components.

[0069] Referring to Figures 8 and 9, in some embodiments, when the lower liquid crystal component is powered on and the upper liquid crystal component is powered off, the liquid crystal molecules of the lower liquid crystal component are arranged in an orderly manner, while the liquid crystal molecules of the upper liquid crystal component are arranged in a disordered manner (or randomly distributed). The upper liquid crystal component scatters the light emitted by the lower liquid crystal component, so that the light is emitted from the liquid crystal dimming sheet 20 in a moderate brightness manner.

[0070] Referring to Figures 10 and 11, in some embodiments, when the electrodes in certain regions of the lower and upper liquid crystal components are energized, the liquid crystal molecules in the electric field region are arranged in an orderly manner, while the liquid crystal molecules in other regions are arranged in a disordered manner. In this way, light can be emitted in a way that gradually changes from bright to dark under the action of the lower and upper liquid crystal components.

[0071] Furthermore, referring to Figures 12 to 14, in some embodiments, the light can be emitted in a gradual change from dark to bright by adjusting the power supply state of the upper and lower liquid crystal components; or, the light can be emitted in a dark-bright-dark pattern from the center outwards by adjusting the power supply state of the upper and lower liquid crystal components; or, the light can be emitted in a preset shape by adjusting the power supply state of the upper and lower liquid crystal components.

[0072] This application also provides an electronic device. The electronic device provided in this application includes any of the light-emitting components 1 provided in this application. For example, the electronic device is a mobile phone or a tablet computer. The light-emitting component 1 can be a fill light or a flash. Thus, when a user is taking a video using the electronic device, they can turn on the fill light or flash for supplementary lighting.

[0073] This application also provides a control method for an electronic device. The control method for an electronic device provided in this application is applicable to any of the electronic devices provided in this application. Referring to FIG15, the control method for an electronic device provided in this application includes:

[0074] Step 510: Receive control command. Step 520: When the light-emitting element 10 is in the light-emitting state, in response to the control command, adjust the power supply state of each liquid crystal component 21 to adjust the light emission mode of the light-emitting component 1.

[0075] For example, the light emission modes of the light-emitting component 1 include: a bright light emission mode shown in FIG5; a dark light emission mode shown in FIG7; a medium brightness light emission mode shown in FIG9; and a local bright light mode shown in FIG11. Furthermore, the light emission angle of the light-emitting component 1 can be adjusted by adjusting the tilt angle of the optical axis of the liquid crystal molecules 2111, thereby adjusting the focal length of the liquid crystal molecules 2111.

[0076] It should also be noted that in some embodiments, the control command includes a first light emission mode command. Referring to Figures 4 and 5, when the control command is the first light emission mode command, adjusting the power supply state of each liquid crystal component 21 specifically includes: supplying power to each liquid crystal component 21 so that the optical axis of the liquid crystal molecules in each liquid crystal layer 211 is parallel to the thickness direction of the liquid crystal dimming plate 20.

[0077] In some embodiments, the control command includes a second light emission mode command. Referring to Figures 6 and 7, when the control command is the second light emission mode command, adjusting the power supply state of each liquid crystal component 21 specifically includes: stopping the power supply to each liquid crystal component 21 so that the optical axes of the liquid crystal molecules in each liquid crystal molecular layer 211 are randomly distributed.

[0078] In some embodiments, the control command includes a third light emission mode command. Referring to Figures 8 and 9, when the control command is the third light emission mode command, adjusting the power supply state of each liquid crystal component 21 specifically includes: stopping power supply to the liquid crystal component 21 that is furthest from the light-emitting element 10 among at least two layers of liquid crystal components 21, and supplying power to the remaining liquid crystal components 21.

[0079] In some embodiments, the liquid crystal assembly 21 further includes a first electrode 212 and a second electrode 213, which are respectively disposed on opposite sides of the liquid crystal molecular layer 211. It should be noted that, exemplarily, when the liquid crystal assembly 21 has two layers, both layers of the liquid crystal assembly 21 include the liquid crystal molecular layer 211, the first electrode 212, and the second electrode 213. Furthermore, the light-emitting surface of the liquid crystal dimming plate 20 includes a first light-emitting region and a second light-emitting region.

[0080] The control command includes a fourth light-emitting mode command. Referring to Figures 10 and 11, when the control command is the fourth light-emitting mode command, the power supply state of each liquid crystal component 21 is adjusted. Specifically, this includes: supplying power to the regions of each first electrode 212 and each second electrode 213 opposite to the first light-emitting region, so that the optical axes of the liquid crystal molecules in each liquid crystal layer 211 opposite to the first light-emitting region are parallel to the thickness direction of the liquid crystal dimming sheet 20; stopping the supply of power to the regions of each first electrode 212 and each second electrode 213 opposite to the second light-emitting region, so that the optical axes of the liquid crystal molecules in each liquid crystal layer 211 opposite to the second light-emitting region are randomly distributed. This allows the light from the first light-emitting region to be stronger, and the light from the second light-emitting region to be weaker. It should be noted that the first light-emitting region can be the region of the liquid crystal dimming sheet 20 where strong light needs to be emitted, and the second light-emitting region can be the region of the liquid crystal dimming sheet 20 where scattered light needs to be emitted.

[0081] Exemplarily, in some embodiments, the first electrode 212 includes a plurality of sub-electrodes. The sub-electrodes are used to adjust the arrangement of liquid crystal molecules in the region of the liquid crystal layer 211 corresponding to the sub-electrode, thereby achieving the effect of adjusting the arrangement of the optical axis of the liquid crystal molecules. Furthermore, when the sub-electrode is energized, the liquid crystal molecules in the region of the liquid crystal layer 211 corresponding to the sub-electrode are arranged in an ordered manner; when the sub-electrode is de-energized, the liquid crystal molecules in the region of the liquid crystal layer 211 corresponding to the sub-electrode are arranged randomly.

[0082] In some other embodiments, the first electrode 212 can be patterned. Thus, by controlling whether the patterned first electrode 212 is energized or de-energized, an electric field can be provided to the liquid crystal molecules, causing them to deflect so that the optical axis of the liquid crystal molecules opposite the energized area of ​​the first electrode 212 is parallel to the thickness direction of the liquid crystal dimming sheet 20. Furthermore, the liquid crystal molecules opposite the unenergized area of ​​the first electrode 212 are randomly distributed, resulting in a random distribution of the optical axis of the liquid crystal molecules opposite the unenergized area of ​​the first electrode 212, which produces a light scattering effect. The patterned electrode can be implemented with reference to related technologies; the specific method for patterning the electrode will not be described in detail here.

[0083] Furthermore, by way of example, the second electrode 213 can be a conventional electrode. Both the first electrode 212 and the second electrode 213 are connected to a power supply. The power supply can supply power to the entire surface of the second electrode 213, and can selectively supply power to a portion of the first electrode 212. Thus, no electric field is generated between the region of the first electrode 212 that is de-energized and the second electrode 213. Consequently, the liquid crystal layer 211 opposite to the region of the first electrode 212 that is de-energized is not affected by the electric field, and the optical axis of the liquid crystal layer 211 opposite to the region of the first electrode 212 that is de-energized is randomly distributed. Of course, in other embodiments, the second electrode 213 can also be constructed similarly to the first electrode 212, and the power supply can simultaneously supply power to the regions of the second electrode 213 and the first electrode 212 where an electric field needs to be generated.

[0084] It should be noted that, in some embodiments, the electronic device may store various control commands. The control commands may include at least one of a first light emission mode command, a second light emission mode command, a third light emission mode command, and a fourth light emission mode command.

[0085] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0086] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the embodiments of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A light-emitting component (1), comprising: The light-emitting element (10) and the liquid crystal dimming sheet (20) are used. The light emitted by the light-emitting element (10) passes through the liquid crystal dimming sheet (20) and is emitted. The liquid crystal dimming sheet (20) includes at least two layers of liquid crystal components (21) stacked together. The liquid crystal components (21) include a liquid crystal molecule layer (211). When at least one layer of the liquid crystal components (21) is in a power-off state, the light emitted by the light-emitting element (10) is scattered by the liquid crystal molecule layer (211) in the liquid crystal components (21) in the power-off state and is emitted.

2. The light-emitting component (1) according to claim 1, wherein, The light-emitting component (1) further includes a collimating optical component (30), which is used to direct the light emitted by the light-emitting element (10) toward the liquid crystal dimming sheet (20) along the thickness direction of the liquid crystal dimming sheet (20).

3. The light-emitting component (1) according to claim 2, wherein, The collimating optical component (30) includes a first reflector (31) and a second reflector (32), wherein the second reflector (32) is a collimating reflective element; The first reflector (31) is disposed between the light-emitting element (10) and the liquid crystal dimming sheet (20). The side of the first reflector (31) facing the light-emitting element (10) is provided with a first reflective surface (311). The second reflector (32) is covered on the side of the first reflector (31) where the first reflective surface (311) is provided. The side of the second reflector (32) facing the first reflective surface (311) is provided with a second reflective surface (321). The second reflective surface (321) and the first reflective surface (311) are spaced apart. The light emitted by the light-emitting element (10) is reflected by the first reflective surface (311) and the second reflective surface (321), and then shines on the liquid crystal dimming sheet (20) through the annular gap area (40) between the second reflective surface (321) and the first reflective surface (311).

4. The light-emitting component (1) according to claim 1, wherein, The light-emitting component (1) is a fill light or a flash.

5. An electronic device comprising a light-emitting component (1) as described in any one of claims 1 to 4.

6. A control method for an electronic device, applied to the electronic device of claim 5, wherein, The control method includes: Receive control commands; When the light-emitting element (10) is in the light-emitting state, in response to the control command, the power supply state of each liquid crystal component (21) is adjusted to adjust the light emission mode of the light-emitting component (1).

7. The control method for an electronic device according to claim 6, wherein, When the control command is the first light emission mode command, adjusting the power supply state of each liquid crystal component (21) specifically includes: supplying power to each liquid crystal component (21) so that the optical axis of the liquid crystal molecules in each liquid crystal molecule layer (211) is parallel to the thickness direction of the liquid crystal dimming plate (20).

8. The control method for an electronic device according to claim 6, wherein, When the control command is the second light emission mode command, adjusting the power supply state of each liquid crystal component (21) specifically includes: stopping the power supply to each liquid crystal component (21) so that the optical axes of the liquid crystal molecules in each liquid crystal molecule layer (211) are randomly distributed.

9. The control method for an electronic device according to claim 6, wherein, When the control command is the third light emission mode command, adjusting the power supply state of each liquid crystal component (21) specifically includes: stopping the power supply to the liquid crystal component (21) that is furthest from the light-emitting element (10) among the at least two liquid crystal components (21), and supplying power to the remaining liquid crystal components (21).

10. The control method for an electronic device according to claim 6, wherein, The liquid crystal assembly (21) further includes a first electrode (212) and a second electrode (213), the first electrode (212) and the second electrode (213) being respectively disposed on opposite sides of the liquid crystal molecule layer (211), and the light-emitting surface of the liquid crystal dimming plate (20) including a first light-emitting region and a second light-emitting region. When the control command is the fourth light emission mode command, adjusting the power supply state of each of the liquid crystal components (21) specifically includes: Power is supplied to the regions of each of the first electrodes (212) and each of the second electrodes (213) that are opposite to the first light-emitting region, so that the optical axis of the liquid crystal molecules in each liquid crystal molecule layer (211) that are opposite to the first light-emitting region is parallel to the thickness direction of the liquid crystal dimming sheet (20). Power is stopped to the regions of each of the first electrodes (212) and each of the second electrodes (213) that are opposite to the second light-emitting region, so that the optical axes of the liquid crystal molecules in each of the liquid crystal molecular layers (211) opposite to the second light-emitting region are randomly distributed.

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