WO2023016162A1

WO2023016162A1 - Reflecting screen capable of directionally emitting light in planar optical waveguide mode, and display device

Info

Publication number: WO2023016162A1
Application number: PCT/CN2022/104863
Authority: WO
Inventors: 林科
Original assignee: 惠州Tcl云创科技有限公司
Priority date: 2021-08-11
Filing date: 2022-07-11
Publication date: 2023-02-16
Also published as: CN113805382A

Abstract

Disclosed in the present invention is a reflecting screen capable of directionally emitting light in a planar optical waveguide mode, the reflecting screen comprising: a reflecting screen; a light guide, which is structure arranged on the reflecting screen; and a light source, which is arranged on the light guide structure, wherein the light source is located on one side of the reflecting screen in a plane extension direction; and light of the light source is reflected and refracted by the light guide structure, and then enters the reflecting screen.

Description

A directional light-emitting reflective screen and display device in the form of a planar light waveguide

This application claims the priority of the Chinese patent application with the application number 202110918694.7 and the title of the invention "a directional light-emitting reflective screen in the form of a planar light waveguide" submitted to the China Patent Office on August 11, 2021, the entire content of which is incorporated by reference incorporated in this application.

technical field

The invention relates to the display related field, in particular to a directional light-emitting reflective screen in the form of a planar light waveguide and a display device.

Background technique

Mobile phones and tablet computers are commonly used electronic devices in daily life, and the channels of electronic devices will be equipped with displays, such as LCD, AMOLED, etc., and LCD, AMOLED and other displays need backlight or self-luminous light source to light up, and the blue light carried by the light source is harmful to people. Eye damage. Display manufacturers have launched a display RLCD that does not require backlight or self-luminous lighting. The principle of light emission is to coat a reflective layer inside the display to achieve luminous effect by absorbing and reflecting external natural light, but the use of external light is limited in dark nights or dark places. In the case of weak or no external light, it is necessary to add a front light source to the RLCD to meet the situation of insufficient external light.

technical problem

Since the light guide structure that provides light guide function for RLCD is directly attached to the reflective screen, it is difficult for the light from the light source to cover the entire surface of the reflective screen, and the efficiency of the light source is low, resulting in a decrease in the luminous effect of the display and affecting the working effect of the display.

technical solution

An embodiment of the present invention provides a directional light-emitting reflective screen in the form of a planar light waveguide, aiming to solve the problem that the reflective reflective screen is dark due to insufficient light supply.

A directional light-emitting reflective screen in the form of a planar light waveguide, comprising a display with a reflective screen; a light guide structure arranged on the display; a light source arranged on the light guide structure, and the light source is located on the plane of the reflective screen One side in the extending direction; the light from the light source is reflected and refracted by the light guide structure to illuminate the reflective screen.

The directional light-emitting reflective screen in the form of a planar light waveguide, wherein the light guide structure includes a light guide film connected to the reflective screen through an adhesive structure, and the light guide film is transparent and has a high refractive index. quality material, the bonding structure is a transparent material with a low refractive index, a microstructure film is provided on the side of the light guide film away from the direction of the reflective screen, and the light guide film is provided at one end close to the light source There is a light guide strip, and the cross-sectional area of the side of the light guide strip near the light source is larger than the cross-sectional area of the side near the light guide film.

The directional light reflective screen in the form of a planar light guide, wherein one end of the light guide film is located inside the edge of the display, the other end of the light guide film is beyond the edge of the display, and the reflective screen having a surface area smaller than the surface area of the display on the surface on which the microstructured film is located, the area of the microstructured film being smaller than the surface area of the display on the side of the reflective screen, the light source being located beyond the display on the light directing film One side of the direction in which the edge extends.

The directional light-emitting reflective screen in the form of a planar light guide, wherein reflective films are provided on both sides of the light guide film, and the reflective films on both sides are attached to the light guide film beyond the edge of the display, The reflective film enters into the edge of the display, the reflective film on the side away from the reflective screen is adjacent to the microstructure film, and the reflective film on the side close to the reflective screen is bonded to the The structures are adjacent.

The directional light-emitting reflective screen in the form of a planar light guide, wherein the microstructure film has a prismatic structure, and the plane of the microstructure film is bonded to the light guide film.

The directional light reflective screen in the form of a planar light waveguide, wherein the bonding structure includes laminating optical glue, and the light guide film is connected to the reflective screen through the laminating optical glue.

The directional light emitting reflective screen in the form of planar light guides, wherein the light guide strip is wedge-shaped, and the light sources are six LED lamps arranged along the long axis of the light guide strip.

The directional light reflective screen in the form of a planar light guide, wherein the reflective screen is an RLCD total reflective screen.

The directional light reflective screen in the form of a planar light waveguide, wherein a display device is provided on the display, and the display device includes the reflective screen, the LED lamp, and the pasted optical glue.

In the directional light reflective screen in the form of a planar light guide, the display is provided with electronic equipment that cooperates with the display device, and the electronic equipment includes a circuit, a processor, and a power supply.

An embodiment of the present invention also provides a display device, the display device includes a directional light-emitting reflective screen in the form of a planar light waveguide, and the directional light-emitting reflective screen in the form of a planar light waveguide includes: a reflective screen; a light guide structure, set On the reflective screen; the light source is arranged on the light guide structure; wherein, the light source is located on one side of the plane extension direction of the reflective screen; the light of the light source is reflected and refracted by the light guide structure and input to the reflective screen.

Further, according to the above-mentioned display device, the light guide structure includes a light guide film connected to the reflective screen through an adhesive structure, the light guide film is a transparent soft material with a high refractive index, the The bonding structure is a material with a transparent and low refractive index, a microstructure film is provided on the side of the light guide film away from the direction of the reflective screen, and a light guide strip is provided on the end of the light guide film close to the light source, The cross-sectional area of the light guide strip near the light source is larger than the cross-sectional area of the light guide film.

Further, according to the above-mentioned display device, the reflective screen is arranged on the plane of the display, one end of the light guide film is located inside the edge of the display, and the other end of the light guide film is beyond the edge of the display , the surface area of the reflective screen is smaller than the surface area of the display on the surface, the area of the microstructure film is smaller than the surface area of the display on the side of the reflective screen, the light source is located on the guide The light film extends beyond one side of the edge extending direction of the display.

Further, according to the above-mentioned display device, reflective films are provided on both sides of the light guide film, and the reflective films on both sides are attached to the light guide film beyond the edge of the display, and the reflective film enters In the edge of the display, the reflective film on the side away from the reflective screen is adjacent to the microstructure film, and the reflective film on the side close to the reflective screen is adjacent to the bonding structure.

Further, according to the above display device, the microstructure film has a prismatic structure, and the plane of the microstructure film is bonded to the light guide film.

Further, according to the above display device, the bonding structure includes laminating optical glue, and the light guide film is connected to the reflective screen through the laminating optical glue.

Further, according to the above display device, the light guide strip is wedge-shaped, and the light sources are six LED lights arranged along the long axis of the light guide strip.

Further, according to the above-mentioned display device, the reflective screen is an RLCD total reflective screen.

Further, according to the above-mentioned display device, a display device is provided on the display, and the display device includes the reflective screen, the LED lamp, and the bonding optical glue.

Further, according to the display device described above, the display is provided with electronic equipment that cooperates with the display device, and the electronic equipment includes a circuit, a processor, and a power supply.

Beneficial effect

The light from the light source is evenly introduced into the light guide film through the light guide strip, and the light is transmitted to the area corresponding to the reflective screen in the transmission area of the light guide film, so that the light is fully transmitted to the reflective screen under the action of the microstructure film and the bonding optical glue , to achieve the purpose of fully and adequately guiding the input light to the reflective screen, and to achieve the effect of ensuring the normal light emission of the reflective screen.

Description of drawings

Fig. 1 is the structural representation of reflective screen front view in the present invention

Figure 2 is a schematic cross-sectional view of Figure 1

Fig. 3 is a schematic diagram of the working principle of the present invention

Embodiments of the present invention

The present invention provides a directional light-emitting reflective screen in the form of a planar light waveguide. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

It should be noted that when a component is referred to as being “fixed on” or “disposed on” another component, it may be directly on the other component or indirectly on the other component. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

It should also be noted that the same or similar symbols in the drawings of the embodiments of the present invention correspond to the same or similar components; The orientation or positional relationship indicated by "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific Orientation, construction and operation in a specific orientation, therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes, and should not be understood as limitations on this patent. For those of ordinary skill in the art, the Understand the specific meaning of the above terms.

The directional light-emitting reflective screen of a kind of planar optical waveguide mode provided by the present invention can be applied to can improve reflective liquid crystal display (ReflectiveLiquid) Crystal Display, RLCD), RLCD total reflection screen is a non-luminous screen display screen. Compared with the traditional transmissive LCD screen, the total reflection display screen has no internal backlight, and uses total reflection of ambient light to display. The display effect of the reflective display screen depends on the internal backlight source, while the total reflection display screen relies on the ambient light source. The front light guide design method of the reflective display screen provided by the embodiment of the present invention can improve the reflectivity of the total reflection display screen and enhance the product quality. performance.

Please refer to FIG. 1-FIG. 3 , the present invention provides some embodiments of a mobile terminal with a self-locking structure.

As shown in Fig. 1-Fig. 3, a kind of planar light waveguide mode directional light reflective screen of the present invention comprises RLCD total reflection screen 11, and described RLCD total reflection screen 11 is arranged on RLCD display, and the described display of the display One side of the reflective screen is connected with a bonding optical glue 14, the other side of the bonding optical glue 14 is provided with a light guide film 12, and the side of the light guiding film 12 away from the bonding optical glue 14 is provided with micro Structural film 13, reflective film 17 is arranged on both sides of the light guide film 12, the reflective film 17 on the side away from the reflective screen is adjacent to the bonding structure, and the reflective film 17 on the side close to the reflective screen The reflective film 17 is adjacent to the adhesive structure, and the lower end of the light guide film 12 is provided with a wedge-shaped light guide strip 15 , and six LED lights are arranged under the light guide strip 15 .

It is worth noting that, as shown in Figures 1-3, the reflective screen, the LED lamp, and the lamination of optical glue form a display device, and the light guide film, the microstructure film, the light guide strip, The reflective film and the laminating optical glue form a light guide structure, and a plurality of LEDs are used as light sources. The light source is located on one side of the plane extending direction of the reflective screen, and the light passes through the wedge-shaped light guide strip to turn the LEDs The light is uniformly introduced into the light guide film, and the light guide film is a transparent soft material with a high refractive index, and most of the light in the light guide film is transmitted in the light guide film by total reflection, In order to reduce light loss, the front and rear layers of the light guide film are pasted with the reflective film, the area between the reflective films is the transmission area, and the light is reflected back to the light guide film in the transmission area for reuse. The display is RLCD, The reflective screen on the display is the RLCD display area, and the light guide film is pasted with a microstructure film with a prismatic structure. When light is introduced into the RLCD display area, the guide film is destroyed by the microstructure film. The total reflection of the optical film, the lamination of the optical glue to form a bonding structure, the light is transmitted towards the RLCD direction by laminating the optical glue and the microstructure film, so that the light of the light source passes through the reflection and refraction of the light guide structure The reflective screen is input to illuminate the RLCD, and the light from the light source is evenly introduced into the light guide film through the light guide strip, and the light is transmitted to the area corresponding to the reflective screen in the transmission area of the light guide film, so that the light is transmitted between the microstructure film and the light guide film. Under the action of pasting optical glue, it is fully transmitted to the reflective screen, so as to realize the purpose of fully and sufficiently guiding the input light to the reflective screen, and to ensure the normal luminous effect of the reflective screen.

In a preferred embodiment, as shown in Figure 1-2, the light guide structure includes a light guide film connected to the reflective screen through an adhesive structure, most of the light in the light guide film is totally reflected on the The light guide film is a soft material with a transparent and high refractive index, the adhesive structure is a transparent material with a low refractive index, and the light guide film in the direction away from the reflective screen One side is provided with a microstructure film, which destroys the total reflection of the light guide film through the microstructure film, so that the light is transmitted toward the direction of the reflective screen. The light guide film is provided with a light guide strip near the light source, and the light guide strip The light from the light source is evenly guided into the light guide film, and the cross-sectional area of the light guide strip near the light source is larger than the cross-sectional area of the side near the light guide film.

In a preferred embodiment, as shown in Figure 1-2, one end of the light guide film is located within the edge of the display, the other end of the light guide film is beyond the edge of the display, and the reflective screen having a surface area smaller than the surface area of the display on the surface on which the microstructured film is located, the area of the microstructured film being smaller than the surface area of the display on the side of the reflective screen, the light source being located beyond the display on the light directing film One side of the direction in which the edge extends.

Specifically, the light guide film faces downward beyond the edge of the display, and the light source is located below the reflective screen.

Specifically, the direction of the light guide film beyond the edge of the display can face upwards or horizontally to the side. When facing upwards, the light source is located above the reflective screen; when facing laterally, the light source is located The horizontal side of the reflective screen.

In a preferred embodiment, as shown in Figure 2, reflective films are provided on both sides of the light guide film, through which the light is reflected back into the light guide film for reuse, and the reflective films on both sides are bonded together The light guide film beyond the edge of the display, the reflective film enters the edge of the display, and the reflective film on the side away from the reflective screen is adjacent to the microstructure film and close to the reflective screen The reflective film on one side is adjacent to the bonding structure.

Specifically, the microstructure film has a prismatic structure, and the plane of the microstructure film is bonded to the light guide film.

Specifically, the microstructure film may be arranged in an arc structure, and the plane of the microstructure film is bonded to the light guide film.

In a preferred embodiment, the bonding structure includes laminating optical glue, and the light guide film is connected to the reflective screen through the laminating optical glue.

In a preferred embodiment, the light guide strip is wedge-shaped, and the light sources are six LED lights arranged along the long axis of the light guide strip.

Specifically, the light guide strip can be set as a circular platform, and the LED lights can be set as one or more.

In a preferred embodiment, the display is an RLCD display, and the reflective screen is an RLCD total reflective screen.

Preferably, the display may also include electronic equipment. The electronic device may include a radio frequency (Radio Frequency, RF) circuit, a memory including one or more computer-readable storage media, an input unit, a display unit, a sensor, an audio circuit, a wireless fidelity (Wireless Fidelity, Wi‑Fi) module, including a processor with one or more processing cores, and power supplies and other components.

Specifically, the RF circuit can be used to send and receive information or receive and send signals during a call. In particular, after receiving the downlink information from the base station, it is processed by one or more processors; in addition, the data related to the uplink is sent to base station. Typically, RF circuitry includes, but is not limited to, an antenna, at least one amplifier, a tuner, one or more oscillators, a Subscriber Identity Module, SIM) card, transceiver, coupler, low noise amplifier (LowNoise Amplifier, LNA), duplexer, etc. In addition, RF circuits can also communicate with networks and other devices through wireless communication. The wireless communication can use any communication standard or protocol, including but not limited to Global System for Mobile Communications (Global System of Mobile communication, GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (Code Division Multiple Access, CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (Long Term Evolution, LTE), e-mail, Short Message Service (Short Messaging Service, SMS), etc.

Preferably, the memory can be used to store software programs and modules, and the processor executes various functional applications and data processing by running the software programs and modules stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application program required by a function (such as a sound playback function, an image playback function, etc.); Data created by the use of the device (such as audio data, phonebook, etc.), etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage devices. Correspondingly, the memory may also include a memory controller to provide access to the memory by the processor and the input unit.

Preferably, the input unit can be used to receive input numbers or character information, and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control. Specifically, in a specific embodiment, the input unit may include a touch-sensitive surface as well as other input devices. A touch-sensitive surface, also known as a touch display or trackpad, collects user touch operations on or near it (for example, the user uses a finger, stylus, etc. any suitable object or accessory on the touch-sensitive surface or on the touch-sensitive Operation near the surface), and drive the corresponding connection device according to the preset program. Optionally, the touch-sensitive surface may include two parts: a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, and detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and sends it to the To the processor, and can receive the command sent by the processor and execute it. In addition, touch-sensitive surfaces can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch-sensitive surface, the input unit may also include other input devices. Specifically, other input devices may include, but are not limited to, one or more of physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, joysticks, and the like.

Preferably, the display unit can be used to display information input by or provided to the user and various graphical user interfaces of the electronic device. These graphical user interfaces can be composed of graphics, text, icons, videos and any combination thereof. The display unit can include a display screen, optionally, a liquid crystal display (Liquid Crystal Display, LCD), Organic Light-Emitting Diode (Organic Light-Emitting Diode, OLED) and other forms to configure the display screen. Further, the touch-sensitive surface can cover the display screen, and when the touch-sensitive surface detects a touch operation on or near it, it is sent to the processor to determine the type of the touch event, and then the processor displays a touch event on the display screen according to the type of the touch event. Provide corresponding visual output. In an embodiment of the present invention, the display unit is a display device, and the display device includes a side light source, a light guide plate, photosynthetic glue, a display panel, and a reflection sheet, and the side light source is arranged on the first side of the light guide plate, so The photosynthetic glue is used to bond the second end surface of the light guide plate and the first end surface of the display panel, the reflective sheet is fixed on the second side of the light guide plate, and the first side of the light guide plate is opposite to the second side of the light guide plate , the light guide plate includes a first end surface of the light guide plate and a second end surface of the light guide plate, the first end surface of the light guide plate is provided with a plurality of groove-like structures, the groove-like structures are used to refract the light emitted by the side light source, and the second end surface of the light guide plate The end surface is provided with a plurality of prisms, and the prisms are used to refract the light emitted by the side light source. The groove structure, the prisms and the light guide plate are an integrated structure, and the first end surface of the light guide plate and the light guide plate The second end surface of the light plate is an opposite surface, the second end surface of the light guide plate is close to the display panel, and the display panel is a reflective liquid crystal display.

Preferably, the electronic device may further include at least one sensor, such as a light sensor, a motion sensor and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display screen according to the brightness of the ambient light, and the proximity sensor may turn off the display screen and/or backlight. As a kind of motion sensor, the gravitational acceleration sensor can detect the magnitude of acceleration at various positions (generally three axes), and can detect the magnitude and position of gravity when it is stationary, and can be used for applications that recognize the attitude of mobile phones (such as horizontal and vertical screen switching, related Gaming, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tap), etc.; as for electronic equipment, other sensors such as gyroscope, barometer, hygrometer, thermometer, infrared sensor, etc. can also be configured.

Specifically, audio circuits, speakers, and microphones may provide an audio interface between a user and the electronic device. The audio circuit can transmit the electrical signal converted from the received audio data to the speaker, and the speaker converts it into a sound signal output; on the other hand, the microphone converts the collected sound signal into an electrical signal, which is converted into an audio signal after being received by the audio circuit Data, and then the audio data is output to the processor for processing, through the RF circuit to be sent to, for example, another electronic device, or the audio data is output to the memory for further processing. The audio circuit may also include an earbud jack to provide peripheral headphone communication with the electronic device. Wi-Fi is a short-distance wireless transmission technology. Electronic devices can help users send and receive emails, browse web pages, and access streaming media through Wi‑Fi modules. It provides users with wireless broadband Internet access.

Specifically, the processor is the control center of the electronic device. It uses various interfaces and lines to connect various parts of the entire mobile phone. By running or executing software programs and/or modules stored in the memory, and calling data stored in the memory, Execute various functions of electronic equipment and process data, so as to monitor the mobile phone as a whole. Optionally, the processor may include one or more processing cores; preferably, the processor may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface and application programs, etc., and the modulation The demodulation processor mainly handles wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor.

Preferably, the electronic device also includes a power supply (such as a battery) for supplying power to each component. Preferably, the power supply can be connected to the processor logic through the power management system, so as to manage charging, discharging, and power consumption management through the power management system. Function. The power supply may also include one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, power status indicators, and any other components.

Preferably, the electronic device can also include a camera, a Bluetooth module, etc., and the processor in the electronic device will load the executable file corresponding to the process of one or more application programs into the memory according to the instruction, and the processor will Various functions are realized by running the application program stored in the memory.

Specifically, the electronic device may include one or more cameras. In one embodiment, the electronic device may include a front camera. The front camera may be used to facilitate video conferencing, video calling, or other applications where capturing an image of the user is beneficial. Additionally and/or alternatively, the electronic device may include one or more rear facing cameras. The rear camera can be used to capture images for viewing on the monitor. In one embodiment, by utilizing two rear cameras, images of viewable real-world objects can be captured and presented in three dimensions on a display.

Working principle: Coating the coating material with high refractive index on the glass. When the light from the LED side light source hits the coating material with high reflectivity, since the refractive index of the coating is higher than that of the air, it is easier for the incident light to form total reflection on the coating surface. When the total reflection is formed, the light reaches the low-refractive index coating layer along the light-guiding glass to form refraction. Since the refractive index of the light-guiding glass is greater than that of the low-refractive index layer, the incident angle of the light is greater than the refraction angle, so the light goes further to the reflective display screen. Direction of illumination, so that the reflective screen is illuminated.

In summary, the present invention provides a directional light-emitting reflective screen in the form of a planar light waveguide, including a display, an RLCD total reflection screen is provided on the display, and a bonding Optical glue, the other side of the pasted optical glue is provided with a light guide film, the side of the light guide film away from the pasted optical glue is provided with a microstructure film, and both sides of the light guide film are provided with A reflective film, the reflective film on the side away from the reflective screen is adjacent to the adhesive structure, the reflective film on the side close to the reflective screen is adjacent to the adhesive structure, and the light guide film The lower end of the wedge-shaped light guide strip is provided with six LED lamps under the light guide strip. The light guide film, the microstructure film, the light guide strip, the reflective film, and the bonding optical Glue forms a light guide structure, a plurality of LEDs are used as light sources, and the LED light is evenly introduced into the light guide film through the wedge-shaped light guide strip. The light guide film is a transparent soft material with a high refractive index, and the light Most of the light in the light guide film is transmitted in the light guide film in the form of total reflection. In order to reduce light loss, the front and rear layers of the light guide film are pasted with the reflective film, and the area between the reflective films is the transmission area. , in the transmission area, the light is reflected back to the light guide film for reuse, the display is RLCD, the reflective screen on the display is the RLCD display area, and the light guide film is pasted with a micro Structured film, when light is introduced into the RLCD display area, the total reflection of the light guide film is destroyed through the microstructured film, and the bonding structure is formed by laminating the optical glue and the microstructured film to make the light It is transmitted towards the RLCD direction to illuminate the RLCD. The light from the light source is evenly introduced into the light guide film through the light guide strip. Under the action of optical glue, it is fully transmitted to the reflective screen, so as to achieve the purpose of fully and sufficiently guiding the input light to the reflective screen, and to ensure the normal luminous effect of the reflective screen.

The present invention also provides a display device, which includes the directional light-emitting reflective screen in the form of a planar light waveguide described in any one of the above items. The display device may be any product or device with a display function such as a mobile phone, a tablet computer, a television, a notebook computer, a digital photo frame, a navigator, and the like.

It should be understood that the application of the present invention is not limited to the above examples, and those skilled in the art can make improvements or transformations according to the above descriptions, and all these improvements and transformations should belong to the protection scope of the appended claims of the present invention.

Claims

A directional light emitting reflective screen in the form of a planar light waveguide, including:

reflective screen;

a light guide structure arranged on the reflective screen;

a light source arranged on the light guide structure;

Wherein, the light source is located on one side of the plane extending direction of the reflective screen;

The light from the light source is reflected and refracted by the light guide structure and input to the reflective screen.
The directional light emitting reflective screen of planar light guide mode according to claim 1, wherein the light guide structure includes a light guide film connected to the reflective screen through an adhesive structure, and the light guide film is transparent and refractive. A soft material with a high rate of refraction, the adhesive structure is transparent and a material with a low refractive index, a microstructure film is provided on the side of the light guide film away from the direction of the reflective screen, and the light guide film is close to the A light guide strip is provided at one end of the light source, and the cross-sectional area of the light guide strip near the light source is larger than the cross-sectional area of the side near the light guide film.
According to claim 2, the planar light waveguide directional light reflective screen, wherein the reflective screen is arranged on the plane of the display, one end of the light guide film is located in the edge of the display, and the light guide film The other end of the reflective screen is beyond the edge of the display, the surface area of the reflective screen is smaller than the surface area of the display on the surface on which it is located, and the area of the microstructured film is smaller than the surface of the display on the side of the reflective screen area, the light source is located on the side of the light guide film that exceeds the direction in which the edge of the display extends.
According to claim 3, the planar light waveguide directional light reflective screen, wherein reflective films are provided on both sides of the light guide film, and the reflective films on both sides are attached to the A light guide film, the reflective film enters the edge of the display, the reflective film on the side away from the reflective screen is adjacent to the microstructure film, and the reflective film on the side close to the reflective screen is adjacent to the microstructure film The bonding structures are adjacent.
The directional light emitting reflective screen of planar light guide mode according to claim 4, wherein the microstructure film is a prismatic structure, and the plane of the microstructure film is bonded to the light guide film.
The directional light emitting reflective screen in the form of a planar light waveguide according to claim 4, wherein the bonding structure includes laminating optical glue, and the light guide film is connected to the reflective screen through the laminating optical glue.
The directional light emitting reflective screen in the form of planar light guide according to claim 4, wherein the light guide strip is wedge-shaped, and the light sources are six LED lamps arranged along the long axis of the light guide strip.
The directional light-emitting reflective screen in the form of a planar light waveguide according to claim 7, wherein the reflective screen is an RLCD total reflective screen.
According to claim 8, the planar light waveguide directional light reflective screen, wherein a display device is provided on the display, and the display device includes the reflective screen, the LED lamp, and the pasted optical glue .
According to claim 9, the planar light waveguide directional light reflective screen, wherein the display is provided with electronic equipment that cooperates with the display device, and the electronic equipment includes a circuit, a processor, and a power supply.
A display device, comprising a directional light emitting reflective screen in the form of a planar light waveguide, wherein the directional light emitting reflective screen in the form of a planar light waveguide comprises: a reflective screen; a light guide structure arranged on the reflective screen; a light source provided In the light guide structure; wherein, the light source is located on one side of the plane extending direction of the reflective screen; the light from the light source is reflected and refracted by the light guide structure and enters the reflective screen.
The display device according to claim 11, wherein the light guide structure comprises a light guide film connected to the reflective screen through an adhesive structure, and the light guide film is a transparent soft material with a high refractive index, so The bonding structure is a transparent material with a low refractive index, a microstructure film is provided on the side of the light guide film away from the reflective screen, and a light guide strip is provided on the end of the light guide film near the light source The cross-sectional area of the light guide strip near the light source is greater than the cross-sectional area of the light guide film.
The display device according to claim 12, wherein the reflective screen is arranged on the plane of the display, one end of the light guiding film is located within the edge of the display, and the other end of the light guiding film is beyond the edge of the display. edge, the surface area of the reflective screen is smaller than the surface area of the display on the surface, the area of the microstructured film is smaller than the surface area of the display on the side of the reflective screen, the light source is located on the The light guide film is beyond one side of the edge extending direction of the display.
The display device according to claim 13, wherein reflective films are provided on both sides of the light guide film, and the reflective films on both sides are attached to the light guide film beyond the edge of the display, and the reflective film Entering into the edge of the display, the reflective film on the side away from the reflective screen is adjacent to the microstructure film, and the reflective film on the side close to the reflective screen is adjacent to the bonding structure.
The display device according to claim 14, wherein the microstructure film is a prismatic structure, and a plane of the microstructure film is bonded to the light guide film.
The display device according to claim 14, wherein the bonding structure includes laminating optical glue, and the light guide film is connected to the reflective screen through the laminating optical glue.
The display device according to claim 14, wherein the light guide strip is wedge-shaped, and the light sources are six LED lights arranged along the long axis of the light guide strip.
The display device according to claim 17, wherein the reflective screen is an RLCD total reflective screen.
The display device according to claim 18, wherein a display device is provided on the display, and the display device includes the reflective screen, the LED lamp, and the bonding optical glue.
The display device according to claim 19, wherein electronic equipment cooperating with the display device is provided on the display, and the electronic equipment includes a circuit, a processor, and a power supply.