WO2020207302A1

WO2020207302A1 - Anti-peeping composite and electronic device

Info

Publication number: WO2020207302A1
Application number: PCT/CN2020/082511
Authority: WO
Inventors: 李亮
Original assignee: Oppo广东移动通信有限公司
Priority date: 2019-04-11
Filing date: 2020-03-31
Publication date: 2020-10-15
Also published as: CN110032900A

Abstract

Provided are an anti-peeping composite and an electronic device. The composite comprises a light transmitting layer and an electro-induced dimming layer. The light transmitting layer comprises a light emergent portion for making scattered light be emitted at a preset emergent angle to form directional light. The electro-induced dimming layer covers the light transmitting layer, comprises a dimming portion and a circuit electrically connected to the dimming portion, and comprises an electro-induced first state and an electro-induced second state. In the electro-induced first state, the electro-induced dimming layer is used for making the directional light be emitted at a first emergent angle; and in the electro-induced second state, the electro-induced dimming layer is used for making the directional light be emitted at a second emergent angle, wherein the threshold range of the first emergent angle is different from that of the second emergent angle. According to the anti-peeping composite provided in the present application, the range of an emergent angle of light directionally emitted from the light transmitting layer is adjusted by means of switching the state of the electro-induced dimming layer, such that the electronic device can be used in an anti-peeping manner, and can also be normally used without the need to prevent peeping.

Description

Anti-peeping composite and electronic equipment

Cross references to related applications

This application claims the priority of the Chinese application with application number 201910290639.0 filed on April 11, 2019, which is hereby incorporated in its entirety by reference for all purposes.

Technical field

The present invention relates to the technical field of electronic equipment, and in particular to an anti-peeping composite and electronic equipment.

Background technique

With the development of electronic device technology, electronic devices such as smart mobile terminals and tablet computers are used more and more frequently. When these electronic devices are used in public, the private information on the display does not want to be seen by people around. Although an anti-peeping layer can be provided for the display screens of these electronic devices, the general anti-peeping layer will cause the electronic devices to always be used within a certain angle of view, even when these electronic devices are already used in private situations. When anti-peeping is not needed, it can still only be used within a predetermined viewing angle range, which greatly limits the freedom of use and restricts the viewing angle.

Summary of the invention

The embodiments of the present application propose an anti-peeping composite and electronic equipment to solve the above-mentioned problems.

The embodiments of the present application achieve the foregoing objectives through the following technical solutions.

In the first aspect, the present application provides an anti-peeping composite piece. The anti-peeping composite piece includes a light-transmitting layer and an electro-dimmable layer. The angular exit forms a directional light. The electro-dimmable layer covers the light-transmitting layer. The electro-dimmable layer includes a dimming portion and a circuit electrically connected to the dimming portion. The electro-dimmable layer includes a first state and a second state. In the first state, the electro-dimmable layer is used to make the directional light emitted at the first exit angle, and in the second state, the electro-dimmable layer is used to make the directional light emit at the second exit angle, where, The threshold range of the first exit angle is different from the threshold range of the second exit angle.

In a second aspect, the present application provides an electronic device. The electronic device includes a display screen and the anti-peeping composite part provided by any embodiment of the first aspect, and the anti-peeping composite part covers the display screen.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

Fig. 1 is a schematic structural diagram of an anti-peeping composite provided by an embodiment of the present application.

2 is a schematic diagram of the structure of the light-transmitting layer of the anti-peeping composite provided by an embodiment of the present application.

Fig. 3 is a schematic diagram of another light-transmitting layer of the anti-peeping composite provided by an embodiment of the present application.

Fig. 4 is a cross-sectional view of Fig. 3 in the A-A direction.

Fig. 5 is a schematic structural diagram of another anti-peeping composite provided by an embodiment of the present application.

Fig. 6 is a schematic structural view of another anti-peeping composite (including a protective layer) provided by an embodiment of the present application.

Fig. 7 is a schematic structural diagram of yet another anti-peeping composite provided by an embodiment of the present application.

FIG. 8 is a schematic diagram of the electro-induced first state of the liquid crystal portion of the anti-peeping composite provided by an embodiment of the present application.

FIG. 9 is a schematic diagram of the second electro-induced state of the liquid crystal portion of the anti-peeping composite provided by an embodiment of the present application.

FIG. 10 is a schematic diagram of the light path of the anti-peeping composite provided by the embodiment of the present application when the electro-dimmable layer is in the first electro-induced state.

FIG. 11 is a schematic diagram of the light path of the anti-peeping composite provided by the embodiment of the present application when the electro-dimmable layer is in the second electro-induced state.

FIG. 12 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

detailed description

In order to enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work shall fall within the protection scope of this application.

Please refer to FIG. 1, an embodiment of the present application provides an anti-peeping composite 100, which includes a light-transmitting layer 10 and an electro-dimmable layer 30. The light-transmitting layer 10 includes a light-emitting portion 11 that is used to diffuse light A directional light is emitted at a preset emission angle. The electro-dimmable layer 30 covers the light-transmitting layer 10, the electro-dimmable layer 30 includes a dimming portion 32 and a circuit 36 electrically connected to the dimming portion 32, and the electro-dimmable layer 30 includes the first state and electrical In the second state, when in the first state, the electro-dimmable layer 30 is used to emit the directional light at the first exit angle. When in the second state, the electro-dimmable layer 30 is used to make the directional light It is emitted at a second exit angle, wherein the threshold range of the first exit angle is different from the threshold range of the second exit angle.

The anti-peeping composite 100 provided by the embodiment of the present application can be used in electronic devices such as mobile terminals and tablet computers, and can also be applied to glass in places that need to switch between private and public modes, such as conference rooms.

The anti-peeping composite 100 provided by the embodiment of the present application can be a thin film layer made of flexible materials, or it can be made of glass (silicon dioxide, SiO ₂ ) as a substrate, which has considerable hardness and can directly replace existing Glass.

Please refer to FIG. 2, in this embodiment, the light emitting portion 11 includes a plurality of light shielding members 112 parallel to each other, and a gap D is provided between two adjacent light shielding members 112.

The light-shielding member 112 may be a grating-like structure, and the light-emitting portion 11 can be formed by punching the substrate at a predetermined distance on the substrate. The size of the light emitting portion 11 is preferably adapted to the size of the display screen of the electronic device.

The light-shielding member 112 may be made of glass or resin, and different materials may be selected according to the application field of the light-transmitting layer 10. The size of the gap D between two adjacent light-shielding members 112 can be between 0.02-0.1 mm, so that the incident light will not be diffracted.

In this embodiment, the shading member 112 is roughly in the shape of a rectangular parallelepiped, and a plurality of shading members 112 are arranged in parallel to form the light emitting portion 11. The arrangement direction of each shading member 112 is defined as the first direction X, and the thickness direction of the shading member 112 is the same as the first direction X. The direction X is the same, and each light shield 112 extends along a direction perpendicular to the first direction X. The shading member 112 includes a first surface 1121 and a second surface 1123 that are away from each other, and the first surface 1121 and the second surface 1123 are both perpendicular to the first direction X. Among the two adjacent light-shielding members 112, the first surface 1121 of one light-shielding member 112 is opposite to the second surface 1123 of the other light-shielding member 112, and there is a gap D between the opposing first surface 1121 and the second surface 1123. The thickness of the shading member 112 may be smaller than the gap D between two adjacent shading members 112.

The light-transmitting layer 10 shields light through the light-shielding member 112, and transmits light through the gap D between two adjacent light-shielding members 112, and emits scattered incident light emitted by the light source at a predetermined exit angle to form directional light, and the predetermined exit angle The range of is related to the width of the gap between two adjacent shading members 112. Taking the normal direction of the light-transmitting layer 10 as 0°, the range of the preset angles on both sides of the normal direction is the range of the exit angle of the light-transmitting layer 10. In this embodiment, the preset angle may be 60°. That is, the range of the exit angle is -60°～+60°. The preset angle may also be other point values within a range of 15° to 65°, such as 15°, 30°, 45°, and so on.

Referring to FIGS. 3 and 4, in another embodiment, the light emitting portion 11 includes a plurality of non-transmissive protrusions 114, and a gap is provided between two adjacent non-transparent protrusions 114. The diameter and radius of curvature of the plurality of non-transmissive protrusions 114 may be the same. The non-transmissive protrusion 114 includes a flat surface 1141 and a spherical surface 1143 that deviate from each other. The spherical surface 1143 is used to adjust the range of the exit angle of the scattered light. Specifically, the spherical surface 1143 may be a partial surface of a sphere.

The light emitting portion 11 further includes a base layer 116, and the flat surface 1141 and the spherical surface 1143 are respectively located on two sides of the base layer 116. The base layer 116 may be a PET (Polyethylene terephthalate, polyethylene terephthalate) layer, or it may be made of other materials such as light-transmitting glass. A plurality of non-light-transmitting protrusions 114 may be arranged regularly and cover the base layer 116, for example, in a rectangular shape. The arrangement of an array, a circular array or a linear array can also be arranged irregularly to cover the base layer 116. In this embodiment, the light is emitted from the gap between two adjacent non-transmissive protrusions 114, and the range of the exit angle of the light and the distance between the adjacent two non-transparent protrusions 114 and the non-transparent protrusions 114 114 is related to the radius of curvature. While keeping the radius of curvature of the non-transmissive protrusion 114 unchanged, the greater the distance between two adjacent non-transmissive protrusions 114, the greater the range of the light exit angle; When the distance between two adjacent non-transmissive protrusions 114 is constant, the larger the radius of curvature of the non-transmissive protrusion 114, the larger the range of the light exit angle.

The base layer 116 has a substantially rectangular structure and has a certain thickness, for example, 0.05-0.1 mm. The base layer 116 includes a first surface 1161 and a second surface 1163 opposite to each other. The flat surface 1141 of the non-transmissive protrusion 114 is attached to the first surface 1141. One surface 1161 and the second surface 1163 can be attached to the electro-dimmable layer 30 (FIG. 1), specifically, it can be attached by transparent optical glue.

5, in another embodiment, the light-transmitting layer 10 includes a light-emitting portion 21, the light-emitting portion 21 includes a plurality of light-transmitting protrusions 214 and a base layer 216, the plurality of light-transmitting protrusions 214 protruding from the base layer 216, transparent There may be no gap between the light protrusions 214. The light-transmitting protrusions 214 in this embodiment are similar to the lens. The scattered light exits in the same direction through the light-gathering action of the multiple light-transmitting protrusions 214. The optical axis of the protrusion 214 is parallel.

Referring to FIG. 6, in other embodiments, the anti-peeping composite 100 may further include a protective layer 50, which is transparent to light, and the protective layer 50 is parallel to the electro-dimmable layer 30. The area of the dimming layer 30 is the same, the protective layer 50 is directly connected to the electro-dimmable layer 30, and the electro-dimmable layer 30 is located between the protective layer 50 and the light-transmitting layer 10. The protective layer 50 can be an ordinary PET film or a toughened film with a certain hardness. The electro-dimmable layer 30 can be protected by the protective layer 50, and the influence of environmental factors such as humidity and external forces on the electro-dimmable layer 30 can be reduced. , Extend the service life of the anti-peeping composite 100.

The anti-peeping composite 100 transmits light through the light emitting portion 11 or the light emitting portion 21, such as a plurality of mutually parallel shading members 112, a plurality of transparent protrusions 214, etc., so that scattered light can be emitted at a preset exit angle to form a directional light.

Referring to FIGS. 7 and 8, in this embodiment, the dimming part 32 includes a first substrate 321 and a second substrate 325 parallel to each other, and a liquid crystal part 323 located between the first substrate 321 and the second substrate 325.

The first substrate 321 may include a first PET layer 3212 and a first conductive layer 3214, wherein the first conductive layer 3214 is attached to the liquid crystal portion 323.

The second substrate 325 may include a second PET layer 3252 and a second conductive layer 3254, wherein the second conductive layer 3254 is attached to the liquid crystal portion 323.

The first conductive layer 3214 and the second conductive layer 3254 may be made of, for example, ITO (Indium Tin Oxide, indium tin oxide) material. The first substrate 321 covers the light-transmitting layer 10, specifically, the first PET layer 3212 of the first substrate 321 covers the light-transmitting layer 10.

The circuit 36 is electrically connected to both the first substrate 321 and the second substrate 325, and can be connected to the circuit of the electronic device 500 after being applied to the electronic device 500 (FIG. 12), so as to facilitate the control of the electronic device 500. The circuit 36 can be arranged on the first substrate. Any one of the conductive layer 3214 and the second conductive layer 3254, or both conductive layers are provided.

Please refer to FIG. 8 separately. The liquid crystal portion 323 includes a liquid crystal 3231. In other embodiments, a polymer material structure 3233 may be further filled in the liquid crystal portion 323. The polymer material structure 3233 may be a solvent for the liquid crystal 3231. The structure 3233 can make the liquid crystal 3231 flow more easily in the liquid crystal part 323.

Referring to Figures 8 and 9, the liquid crystal 3231 includes a first state and a second state. When the liquid crystal 3231 is in the first state, the liquid crystal molecules of the liquid crystal portion 323 are aligned in the same direction, and light passes through adjacent liquid crystals. The gap between the molecules emerges from the liquid crystal portion 323 along a straight line; when the liquid crystal 3231 is in the second electro-induced state, the liquid crystal molecules of the liquid crystal portion 323 are arranged in different directions. The light is reflected by the liquid crystal molecules in all directions and then exits the liquid crystal along various angles. 323 shoots out. The first state and the second state are interchangeable, that is, when the liquid crystal 3231 is in the first state, light scatters and emits light; when the liquid crystal 3231 is in the second state, the light is directed to emit light.

In other embodiments, the liquid crystal portion 323 can also be filled with piezoelectric materials of preset properties (solid or liquid) in response to the user's pressing pressure, so as to switch between the first state and the second state.

In this embodiment, the first electro-induced state is the on state of the circuit 36, and the electro-induced second state is the off state of the circuit 36, or the first electro-induced state may be the off state of the circuit 36, The second state is the conducting state of the circuit 36.

In another embodiment, the electro-induced first state may be that the current in the circuit 36 changes in a first mode, and the electro-induced second state may be that the current in the circuit 36 changes in a second mode, wherein the first mode may be In order for the current in the circuit 36 to decrease regularly, the second mode may be that the current in the circuit 36 regularly increases; or, the first mode may be that the current in the circuit 36 regularly increases, and the second mode may Because the current in the circuit 36 decreases regularly. The first mode can also be that the current in the circuit 36 changes from positive to negative, and the second mode can be that the current in the circuit 36 changes from negative to positive; or the first mode can be that the current in the circuit 36 changes from negative to positive. From negative to positive, the second mode can be that the current in the circuit 36 changes from positive to negative. The first mode can be that the current in the circuit 36 changes from nothing to nothing, and the second mode can be that the current in the circuit 36 changes from presence to nothing; or the first mode can be that the current in the circuit 36 changes from presence to absence. Ground changes, the first mode can be that the current in the circuit 36 changes from nothing to ground. In short, the first mode is different from the second mode, and the two are different.

In other embodiments, the first electro-induced state may be that the voltage in the circuit 36 changes in the first mode, and correspondingly, the electro-induced second state may be that the voltage in the circuit 36 changes in the second mode.

In this embodiment, after the directional light passes through the electro-dimmable layer 30, when the electro-dimmable layer 30 is in the first electro-induced state, the electro-dimmable layer 30 causes the directional light to be emitted at a first exit angle. When the light-adjusting layer 30 is in the second state, the light-adjusting layer 30 causes the directional light to be emitted at a second exit angle. The threshold range of the first exit angle is different from the threshold range of the second exit angle, so that the light can exit at the first exit angle or exit at the second exit angle after exiting the anti-peeping composite 10, adapting to different environments Different requirements for anti-peeping.

By analogy, light can also exit at the third exit angle, and the threshold range of the third exit angle, the threshold range of the first exit angle, and the threshold range of the second exit angle are all different from each other, for example, the threshold of the first exit angle The range and the threshold range of the second exit angle both fall within the threshold range of the third exit angle, which is the widest exit angle range. Of course, the reverse is also possible, that is, the threshold range of the third exit angle is the narrowest threshold range.

In this embodiment, the threshold range of the first exit angle falls within the threshold range of the second exit angle, that is, the threshold range of the second exit angle is wider, the threshold range of the first exit angle is narrower, and the second exit angle The threshold range of the angle includes the threshold range of the first exit angle. For example, when the threshold range of the first exit angle is 30°-60°, the threshold range of the second exit angle can be 30°-90° or 15°-100° , The end value of the threshold range of the first exit angle falls within the threshold range of the second exit angle, or coincides with the end value of the threshold range of the second exit angle. The exit angle range of the directional light can be the same as the threshold range of the first exit angle, which means that the directional light can be completely transmitted by the electro-dimmable layer 30 in the light-transmitting state (for example, the first electro-induced state) without loss Get out. In other embodiments, the exit angle of the directional light may also be set to be not completely the same as the threshold range of the first exit angle, but only mostly overlap, part overlap, and so on.

Please refer to FIG. 10 and FIG. 11. Now, a specific example is used to describe the principle of the above-mentioned anti-peeping composite 100 provided in this embodiment. The light emitting part 11 is similar to a grating or a lens, so that the scattered light passes through the light emitting part 11 and then exits along a preset exit angle to form a directional light. For example, when an external switch is manually turned on, the circuit 36 (FIG. 7) is turned into a conducting state, and the electro-dimmable layer 30 In the first electrochemical state (completely transparent), the alignment direction of each liquid crystal 3231 molecule in the liquid crystal portion 323 is the same. The light passes through the gap between adjacent liquid crystal 3231 molecules and then exits from the liquid crystal portion 323 in a straight line, so the exit angle is maintained at a predetermined Set the exit angle, that is, the threshold range of the first exit angle and the exit angle range of the directional light are the same or at least partially overlap, that is, after the scattered light passes through the light-transmitting layer 10 and the electro-dimmable layer 30, the directional light is finally emitted, The anti-peeping composite 100 is used in electronic equipment or other devices or places that need to be peeped, and can achieve an anti-peeping effect.

When anti-peeping is not needed and a larger viewing angle is needed, the external switch can be manually turned off. At this time, the circuit 36 is in the off state, the electro-dimmable layer 30 is in the electro-induced second state (fog state), and the liquid crystal portion 323 The arrangement direction of the liquid crystal molecules is not the same. The scattered light passes through the light-emitting portion 11 and then exits along a preset exit angle to form directional light. After the directional light is reflected by the liquid crystal molecules in all directions, the light exits the liquid crystal portion 323 along various angles, that is, the scattered light sequentially passes through the light-transmitting layer 10 and After the dimming layer 30, the light finally exits at a wider angle than the exit angle of the directional light. At this time, the electronic device or other terminal using the anti-peeping composite 100 enters the non-anti-peeping mode (no need to keep secret, the display content can be Public status), so that the user can see the content displayed on the display screen under the anti-peeping composite 100 from various viewing angles.

In summary, the anti-peeping composite 100 provided by the present application includes a light-transmitting layer 10 and an electro-dimmable layer 30, and the emission of light directed out through the light-transmitting layer 10 can be adjusted by switching the state of the electro-dimmable layer 30 The angle range enables the anti-peeping composite 100 to be used in an anti-peeping manner, and can also be used normally without preventing peeping.

Referring to FIG. 12, an embodiment of the present application further provides an electronic device 500. The electronic device 500 includes the anti-peeping composite 100 of any of the above embodiments or implementations. The electronic device 500 further includes a display screen 300. The piece 100 covers the display screen 300. In this embodiment, the light-transmitting layer 10 is attached to the display screen 300. The electronic device 500 may be a smart phone, and may include components such as a camera, a speaker, a motherboard, and a battery.

In this embodiment, the state of controlling the electro-dimmable layer 30 can be controlled by an external switch. The electro-dimmable layer 30 may include two electrodes, which are respectively connected to the manual switch and connected to the power supply of the electronic device 500. When connected, the switch can be located in the middle frame, rear case or other positions of the electronic device 500, and can be controlled by manually turning on or off the switch key.

For example, in one embodiment, the circuit 36 is in the conducting state and the electro-dimmable layer 30 is in the first electro-induced state. When the conducting period of the circuit 36 exceeds the preset period of time, the circuit 36 is controlled to be automatically turned off. , The electro-dimmable layer 30 is converted to the electro-induced second state. In one embodiment, the circuit 36 is in the conducting state. When the current in the circuit 36 exceeds the set current threshold, the electro-dimmable layer 30 switches from the first electro-induced state to the second electro-induced state.

The switching between the first electro-induced state and the second electro-induced state of the electro-dimmable layer 30 can also be achieved by pressing the anti-peeping composite 100. For example, when the pressing force exceeds a predetermined level, the piezoelectric material starts to generate voltage, the liquid crystal molecules of the liquid crystal 3231 (FIG. 8) are aligned in the same direction, and the electro-dimmable layer 30 is in the first electro-induced state (completely transparent). When the pressing force or the pressing force is not enough to make the piezoelectric material generate sufficient voltage, the liquid crystal molecules of the liquid crystal 3231 are scattered and arranged, and the electro-dimmable layer 30 is in the electro-induced second state (fog state).

For another example, controlling the state of the electro-dimmable layer 30 can also be achieved through automatic control. For example, the electro-dimmable layer 30 is used in electronic devices such as mobile terminals. The mobile terminal includes a camera, and the surroundings can be identified through the camera of the mobile terminal. Environment, if the camera captures the avatar of another person, it can transmit information about the surrounding environment to the processor inside the mobile terminal, and the processor parses and processes the received environment information and outputs an electrical signal to turn on the circuit 36 or Maintaining the conducting state of the circuit 36, the electro-dimmable layer 30 is in the first electro-induced state or maintained in the first electro-induced state, providing a smaller field of view to prevent peeping; if the camera only captures the user's own profile picture , The processor control circuit 36 changes from on to off, or the holding circuit 36 is off, and the electro-dimmable layer 30 is in the electro-induced second state or maintained in the electro-induced second state, providing a wider field of view , No longer limit the viewing angle.

In yet another embodiment, controlling the state of the electro-dimmable layer 30 can be achieved in a non-contact manner. The electronic device 500 includes an infrared detector, and the electro-dimmable layer 30 is electrically connected to the infrared detector. The infrared detector includes a transmitting end and a receiving end. The transmitting end emits one or more infrared light, and one or more infrared light is transparent. When the user blocks the infrared light, the signal at the receiving end changes. The processor controls the circuit 36 to turn on according to the changed signal, and the electro-dimmable layer 30 is in the first electro-induced state. When the user no longer blocks the infrared light, When the infrared detector is used, the signal at the receiving end changes again, and the processor controls the circuit 36 to turn off according to the changed signal, and the electro-dimmable layer 30 is in the electro-induced second state.

The electro-induced first state of the electro-dimmable layer 30 may correspond to the anti-peeping mode of the electronic device 500. At this time, it can only be viewed from a certain angle (for example, 30°) with the front viewing direction of the display screen. The content of the display screen 300 is cleared, thereby achieving the anti-peeping effect of the electronic device 500 and protecting the privacy of the user.

The electro-induced second state of the electro-dimmable layer 30 may correspond to the non-anti-peeping mode of the electronic device 500. At this time, the user can see the content of the display screen 300 clearly from various viewing angles, and the electronic device 500 enters the non-anti-peeping mode , The user can share the content displayed on the screen with the surrounding people.

In summary, the electronic device 500 in the embodiment of the present application includes an anti-peeping composite 100, which includes a light-transmitting layer 10 and an electro-dimmable layer 30, which can be adjusted by switching the state of the electro-dimmable layer 30 The range of the exit angle of the light directionally emitted through the light-transmitting layer 10 enables the electronic device 500 to be used in an anti-peeping manner, and can also be used normally without preventing peeping.

The above embodiments are only used to illustrate the technical solutions of the application, but not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still compare the previous embodiments. The recorded technical solutions are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the application, and shall be included in the application Within the scope of protection.

Claims

An anti-peeping composite piece, which is characterized in that it comprises:

A light-transmitting layer, the light-transmitting layer includes a light-emitting portion, and the light-emitting portion is used to emit scattered light at a predetermined exit angle to form directional light; and

The electro-dimmable layer covers the light-transmitting layer, the electro-dimmable layer includes a dimming portion and a circuit electrically connected to the dimming portion, the electro-dimmable The layer includes an electro-induced first state and an electro-induced second state. When in the electro-induced first state, the electro-induced dimming layer is used to cause the directional light to be emitted at a first exit angle. In the second state, the electro-dimmable layer is used to cause the directional light to be emitted at a second exit angle, wherein the threshold range of the first exit angle is different from the threshold range of the second exit angle.
The anti-peeping composite piece according to claim 1, wherein the light emitting portion comprises a plurality of light shielding members parallel to each other, and a gap is provided between two adjacent light shielding members.
The anti-peeping composite member of claim 2, wherein the light shielding member extends in a direction perpendicular to the arrangement direction of the plurality of light shielding members.
The anti-peeping composite piece according to claim 2, wherein the thickness of the shading member is smaller than the gap between two adjacent shading members.
The anti-peeping composite piece according to claim 1, wherein the light emitting portion comprises a plurality of non-light-transmitting protrusions and a base layer, the non-light-transmitting protrusions protrude from the base layer, and the non-light-transmitting protrusions The protrusion includes a plane and a spherical surface that are away from each other, and a gap is provided between two adjacent non-transparent protrusions.
The anti-peeping composite part of claim 5, wherein the base layer comprises a first surface and a second surface opposite to each other, and the flat surface of the non-light-transmitting protrusion is attached to the first surface, The second surface is attached to the electro-dimmable layer.
The anti-peeping composite part of claim 5, wherein the base layer is a PET layer.
The anti-peeping composite piece of claim 5, wherein the diameter and the radius of curvature of the plurality of non-light-transmitting protrusions are the same.
The anti-peeping composite piece according to claim 1, wherein the light-emitting portion includes a plurality of light-transmitting protrusions and a base layer, and the light-transmitting protrusions protrude from the base layer, and two adjacent ones of the There is no gap between the light-transmitting protrusions.
The anti-peeping composite piece according to any one of claims 1-9, wherein the dimming part comprises a first substrate and a second substrate parallel to each other, and the first substrate and the second substrate are located on the In the liquid crystal part between the two substrates, the circuit is electrically connected to the first substrate and the second substrate, and the first substrate covers the light-transmitting layer.
The anti-peeping composite part of claim 10, wherein the first substrate comprises a first PET layer and a first conductive layer, and the first conductive layer is attached to the liquid crystal portion; The second substrate includes a second PET layer and a second conductive layer, and the second conductive layer is attached to the liquid crystal portion.
The anti-peeping composite part of claim 11, wherein the first PET layer covers the light-transmitting layer.
The anti-peeping composite according to any one of claims 1-12, wherein the first electro-induced state is the conducting state of the circuit, and the electro-induced second state is the state of the circuit Off state.
The anti-peeping composite of any one of claims 1-12, wherein the first electro-induced state is that the current in the circuit changes in a first mode, and the electro-induced second state is The current in the circuit changes in a second mode, and the first mode is different from the second mode.
The anti-peeping composite piece according to any one of claims 1-14, wherein the threshold range of the first exit angle falls within the threshold range of the second exit angle.
The anti-peeping composite part of claim 15, wherein the end value of the threshold range of the first exit angle falls within the threshold range of the second exit angle.
The anti-peeping composite piece according to any one of claims 1-16, wherein the exit angle range of the directional light is the same as the threshold range of the first exit angle.
The anti-peeping composite part of any one of claims 1-17, wherein the anti-peeping composite part further comprises a protective layer, and the protective layer is directly connected to the electro-dimmable layer, so The electro-dimmable layer is located between the protective layer and the transparent layer.
The anti-peeping composite part of claim 18, wherein the protective layer is parallel to the electro-dimmable layer.
An electronic device, characterized in that the electronic device comprises a display screen and the anti-peeping composite part according to any one of claims 1-19, and the anti-peeping composite part covers the display screen.