CN112764271A - Display device and terminal - Google Patents

Display device and terminal Download PDF

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Publication number
CN112764271A
CN112764271A CN202110181873.7A CN202110181873A CN112764271A CN 112764271 A CN112764271 A CN 112764271A CN 202110181873 A CN202110181873 A CN 202110181873A CN 112764271 A CN112764271 A CN 112764271A
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China
Prior art keywords
display device
light
guide plate
light guide
display
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Pending
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CN202110181873.7A
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Chinese (zh)
Inventor
林科
于洋
邱珠伟
马记涛
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JRD Communication Shenzhen Ltd
Jiekai Communications Shenzhen Co Ltd
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Jiekai Communications Shenzhen Co Ltd
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Application filed by Jiekai Communications Shenzhen Co Ltd filed Critical Jiekai Communications Shenzhen Co Ltd
Priority to CN202110181873.7A priority Critical patent/CN112764271A/en
Publication of CN112764271A publication Critical patent/CN112764271A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133615Edge-illuminating devices, i.e. illuminating from the side

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)

Abstract

The application discloses display device and terminal, this display device is including range upon range of light guide plate and the display module assembly that sets up, and set up in the sidelight source of light guide plate income plain noodles one side, wherein, the surface that the display module assembly was kept away from to the light guide plate is provided with first coating film layer, the first refracting index on first coating film layer is higher than air refracting index, when the sidelight source is luminous, first coating film layer is used for the light total reflection to the display module assembly that produces the sidelight source, thereby light source utilization ratio has been promoted, and then display device's display effect has been guaranteed.

Description

Display device and terminal
Technical Field
The invention relates to the technical field of display, in particular to a display device and a terminal.
Background
With the continuous development of communication technology, electronic devices such as mobile phones and tablet computers become electronic devices that people carry with them in daily life. Electronic devices are usually equipped with a Display screen, and the common Display screen includes an LCD (Liquid Crystal Display), an AMOLED (Active Matrix/Organic Light Emitting Diode) screen, and the like. Display screens such as LCD, AMOLED all need to be shaded or the self-luminous light source can light, the blue light that the light source carried has the injury to human eye, in order to reduce this kind of injury, Display screen manufacturer has released a Display screen RLCD (Reflective Liquid Crystal Display, total reflection Display) that does not need to be shaded or the self-luminous light source lights, has plated a layer of reflection stratum in it, can reach the light-emitting effect through absorbing and reflecting external natural light.
However, the electronic device using the RLCD still needs to be provided with a front light source to light the RLCD when the external light is insufficient. In the existing display device, the light of the front light source is dispersed by arranging dots on the light guide sheet, so that the light emitted to the RLCD is not much, the display effect of the RLCD is affected, and the use scene of the RLCD is limited.
Disclosure of Invention
The invention provides a display device and a terminal, and aims to solve the technical problems that the existing total reflection display device is poor in light source utilization rate, so that the display effect is poor, and the use scene is limited.
The technical scheme provided by the application is as follows:
the application provides a display device, including light guide plate and the display module assembly that range upon range of setting and set up in the sidelight source of light guide plate income plain noodles one side, wherein, the light guide plate is kept away from the surface of display module assembly is provided with first coating film layer, the first refracting index on first coating film layer is higher than air refracting index, works as when the sidelight source is luminous, first coating film layer be used for with the light total reflection that the sidelight source produced extremely the display module assembly.
In the display device provided by the application, the material of the first coating layer comprises metal oxide.
In the display device provided by the application, the material of the first coating layer comprises at least one of aluminum oxide, chromium oxide and copper oxide.
In the display device that this application provided, the light guide plate is close to display module's surface is provided with the second coating film layer, the second refractive index on second coating film layer is less than the refracting index of light guide plate is used for with the light refraction that first coating film layer total reflection comes extremely display module.
In the display device provided by the application, the material of the second coating layer comprises an inorganic compound.
In the display device provided by the application, the first coating film and the second coating film completely cover the surface of the light guide plate.
In the display device provided by the application, the material of the light guide plate comprises glass.
In the display device provided by the application, the display module comprises a polaroid and a total reflection display screen which are arranged in a stacked mode.
In the display device provided by the application, the polaroid and the total reflection display screen are bonded through optical cement.
The application also provides a terminal comprising the display device.
The beneficial effect of this application does: the application discloses display device and terminal, this display device including range upon range of light guide plate and the display module assembly that sets up and set up in the sidelight source of light guide plate income plain noodles one side, set up the first coating film layer that one deck refracting index is higher than the air through the surface of keeping away from the display module assembly at the light guide plate to make the sidelight source locate total reflection to the display module assembly at first coating film layer, promoted the light source utilization ratio, thereby guaranteed display device's display effect.
Drawings
The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings.
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present application.
Fig. 2 is a first schematic diagram of light emission of a display device according to an embodiment of the present disclosure.
Fig. 3 is another schematic structural diagram of a display device according to an embodiment of the present application.
Fig. 4 is a schematic diagram illustrating a second principle of light emission of the display device according to the embodiment of the present application.
Fig. 5 is a schematic structural diagram of a terminal according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "means two or more unless specifically defined otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials. In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present disclosure, in which the display device 10 includes a light guide plate 11, a display module 12 and a side light source 14 disposed on a light incident side of the light guide plate 11, where a first film coating layer 13 is disposed on a surface of the light guide plate 11 away from the display module 12, a first refractive index of the first film coating layer 13 is higher than a refractive index of air, and when the side light source 14 emits light, the first film coating layer 13 is used for totally reflecting light generated by the side light source 14 to the display module 12.
For ease of understanding, the principle of total reflection is explained herein. Specifically, the principle of total reflection is: the phenomenon that when light is emitted from an optically dense medium (i.e. a medium in which the propagation velocity of the light is small) to an interface of an optically sparse medium (i.e. a medium in which the propagation velocity of the light is large), the light is totally reflected back into the original medium. Among them, the optically thinner medium has a higher light velocity but a lower refractive index than the optically denser medium. As can be seen, in the present embodiment, the air corresponds to the optically thinner medium, and the first plating layer 13 corresponds to the optically denser medium.
Specifically, referring to fig. 2, fig. 2 is a schematic diagram illustrating a first principle of light emission of the display device according to the embodiment of the present disclosure, in the display device 20 of fig. 2, when the side light source 24 emits light, the light a is emitted to the first film coating layer 21, and since the refractive index of the first film coating layer 21 is higher than the refractive index of air, no refraction occurs and total reflection occurs, so that a reflected light b is formed, and the reflected light b continues to be emitted to the total reflection display screen 23, so that the total reflection display screen emits light, thereby preventing the light a from being emitted into the air, improving the utilization rate of the light a, and improving the display effect. It is noted that fig. 2 omits some of the components to make the light path more clear.
Specifically, with continued reference to fig. 1, in some embodiments, the material of the first plating layer 13 includes a metal oxide. Further, the material of the first plating layer 13 may be at least one of aluminum oxide, chromium oxide, and copper oxide.
In some embodiments, the first plating layer 13 may be formed using a sputtering plating process. The sputtering coating process is to inject proper inert gas as medium in vacuum environment, to accelerate the impact of the inert gas on the target material, to make the atoms on the surface of the target material impacted, and to form a coating on the surface.
In some embodiments, the first plating layer 13 may also be formed by an evaporation process. The vapor deposition is a process method in which a coating material (or called a coating material) is evaporated and gasified in a certain heating and evaporation manner under a vacuum condition, and particles fly to the surface of a substrate to condense and form a film. The vapor deposition is a vapor deposition technology which is used earlier and has wider application, and has the advantages of simple film forming method, high film purity and compactness, unique film structure and performance and the like.
In some embodiments, the first plating layer 13 may also be formed using a coating process.
Specifically, the first film coating layer 13 should completely cover the surface of the light guide 11 to ensure that the light generated by the side light source 14 is totally reflected to the display module 12, so as to improve the utilization rate of the light source, ensure the display module to display uniformly, and ensure the display effect.
In some embodiments, the light guide plate 11 may be made of glass. Specifically, the light guide glass has the advantages of good stability, good processing and the like.
In some embodiments, the light guide plate 11 may also be made of PC (Polycarbonate) plate. In particular, PC board, also known as polycarbonate board, kaplan board, is an engineering plastic with excellent combination of physical, mechanical, electrical and thermal properties.
In some embodiments, the light guide plate 11 may also be made of other materials, such as PMMA (polymethyl methacrylate).
In some embodiments, the display module 12 includes a polarizer 12-1 and a total reflection display 12-3, wherein the polarizer 12-1 and the total reflection display 12-3 are bonded by an optical adhesive 12-2.
Specifically, the optical Adhesive 12-2(optical Clear Adhesive, OCA) is a special Adhesive for gluing transparent optical elements (such as lenses and the like), and has the characteristics of being colorless and transparent, having the light transmittance of more than 90%, having good gluing strength, being capable of being cured at room temperature or intermediate temperature, having small curing shrinkage and the like, so that the optical Adhesive is very suitable for being used as an Adhesive material for the polarizer 12-1 and the total reflection display screen 12-3.
Be different from prior art, display device 10 in this embodiment is including the light guide plate 11 and the display module assembly 12 of range upon range of setting, and set up in the sidelight source 14 of light guide plate 11 income plain noodles one side, wherein, the surface that display module assembly 12 was kept away from to light guide plate 11 is provided with first coating layer 13, the first refracting index of first coating layer 13 is higher than the air refracting index, when sidelight source 14 was luminous, first coating layer 13 was used for the light total reflection that produces the sidelight source to display module assembly 12, thereby the light source utilization ratio has been promoted, and then display device 10's display effect has been guaranteed.
Further, an embodiment of the present application further provides a display device, please refer to fig. 3, fig. 3 is another schematic structural diagram of the display device provided in the embodiment of the present application, the display device 30 includes a light guide plate 31, a display module 32 and a side light source 35 disposed on a light incident side of the light guide plate 31, where a first coating layer 33 is disposed on a surface of the light guide plate 31 away from the display module 32, a first refractive index of the first coating layer 33 is higher than a refractive index of air, a second coating layer 34 is disposed on a surface of the light guide plate 31 close to the display module 32, a second refractive index of the second coating layer 34 is smaller than the refractive index of the light guide plate 31, when the side light source 35 emits light, the first coating layer 13 is configured to totally reflect light generated by the side light source 35 to the second coating layer 34, and the second coating layer 34 refracts the totally reflected light to the display module 32.
Wherein the refractive index of the light guide plate 31 is lower than the first refractive index.
Specifically, referring to fig. 4, fig. 4 is a schematic diagram illustrating a second principle of light emission of the display device according to the embodiment of the present disclosure, in the display device 40 of fig. 4, when the side light source 45 emits light, the light c is emitted to the first film layer 41, and since the refractive index of the first film layer 41 is higher than the refractive index of air, total reflection does not occur, so that the light c is prevented from being emitted into air, and a reflected light d is formed, and the reflected light d continues to be emitted to the second film layer 43, and since the refractive index of the second film layer 43 is lower than that of the light guide glass, refraction with an incident angle larger than a refraction angle is generated, so that the refracted light e further irradiates 44 toward the reflective display screen, and more refracted light e irradiates 44 onto the reflective display screen 44, thereby increasing the utilization rate of the light c and improving the display effect. It should be noted that some parts of fig. 4 are omitted to make the light path more clear.
With continued reference to fig. 3, in some embodiments, the material of the second coating layer 34 includes an inorganic compound.
Specifically, the second plating layer 34 may be formed by a sol-gel plating process.
In some embodiments, second coating 34 should completely cover the surface of light guide plate 32. It is easy to understand that if the second coating layer 34 is not completely covered, the light will overflow from the edge, which results in darker edge and uneven display brightness, and thus the display effect will be affected.
In some embodiments, the display module 32 includes a polarizer 32-1 and a full emission display 32-3 stacked together, wherein the polarizer 32-1 and the full emission display 32-3 are bonded by an optical adhesive 32-2.
In some embodiments, optical adhesives may also be used between polarizer 32-1 and second coating 34.
Be different from prior art, display device 30 in this embodiment is including range upon range of light guide plate 31 and the display module assembly 32 that sets up, and set up in the sidelight source 35 of the light guide plate 31 income light side one side, wherein, the surface that display module assembly 32 was kept away from to this light guide plate 31 is provided with first coating layer 33, the first refracting index of first coating layer 33 is higher than the air refracting index, the surface that this light guide plate 31 is close to display module assembly 32 is provided with second coating layer 33, the second refracting index of this second coating layer 33 is less than the refracting index of light guide plate 31, when sidelight source 35 is luminous, first coating layer 13 is used for the light total reflection that produces sidelight source 35 to second coating layer 34, second coating layer 34 refracts the light after the total reflection to display module assembly 32, thereby the light utilization ratio has been promoted, and then guaranteed display device 30's display.
In addition, the embodiment of the application further provides a terminal, and the terminal can be a smart phone, a tablet computer and other devices. As shown in fig. 5, the terminal 50 includes a display device 51.
In some embodiments, the display device 51 may include a light guide plate and a display module stacked on each other, and a side light source disposed on a side of the light incident surface of the light guide plate, wherein a surface of the light guide plate away from the display module is provided with a first coating layer, a first refractive index of the first coating layer is higher than a refractive index of air, and when the side light source emits light, the first coating layer is configured to totally reflect light generated by the side light source to the display module. Specifically, the display module may include a polarizer and a total reflection display panel, which are stacked, and the polarizer and the total reflection display panel are bonded by an optical adhesive.
In some embodiments, a second film layer is further disposed on a surface of the light guide plate of the display device 51 close to the display module, where a refractive index of the second film layer is lower than a refractive index of the light guide plate, when the side light source emits light, the first film layer is used to totally reflect light generated by the side light source to the second film layer, and the second film layer refracts the totally reflected light to the display module. Specifically, the display module may include a polarizer and a total reflection display panel, which are stacked, and the polarizer and the total reflection display panel are bonded by an optical adhesive.
In some embodiments, the material of the first coating layer comprises a metal oxide. Further, the material of the first coating layer can be at least one of aluminum oxide, chromium oxide and copper oxide.
In some embodiments, the first plating layer may be formed using a sputter plating process. The sputtering coating process is to inject proper inert gas as medium in vacuum environment, to accelerate the impact of the inert gas on the target material, to make the atoms on the surface of the target material impacted, and to form a coating on the surface.
In some embodiments, the first plating layer may also be formed by an evaporation process. The vapor deposition is a process method in which a coating material (or called a coating material) is evaporated and gasified in a certain heating and evaporation manner under a vacuum condition, and particles fly to the surface of a substrate to condense and form a film. The vapor deposition is a vapor deposition technology which is used earlier and has wider application, and has the advantages of simple film forming method, high film purity and compactness, unique film structure and performance and the like.
In some embodiments, the first coating layer may also be formed using a coating process.
Specifically, first coating film layer should cover the surface of light guide body completely to guarantee that the light that sidelight source produced is whole total reflection to display module assembly, so, both promoted the light utilization ratio, can guarantee again that display module assembly shows evenly, guarantee the display effect.
In some embodiments, the material of the second coating layer includes an inorganic compound.
Specifically, the second plating layer may be formed by a sol-gel plating process.
In some embodiments, the second coating layer should completely cover the surface of the light guide plate. It is easy to understand that if the second coating layer is not completely covered, the light will be non-uniform, which affects the display effect.
In some embodiments, the light guide plate may be made of glass. Specifically, the light guide glass has the advantages of good stability, good processing and the like.
In some embodiments, the light guide plate may also be made of PC (PC Polycarbonate) plate. In particular, PC board, also known as polycarbonate board, kaplan board, is an engineering plastic with excellent combination of physical, mechanical, electrical and thermal properties.
In some embodiments, the light guide plate may also be other materials, such as PMMA (polymethyl methacrylate).
In some embodiments, the display module comprises a polarizer and a total reflection display screen, wherein the polarizer and the total reflection display screen are bonded by an optical adhesive.
In some embodiments, an optical adhesive may be used between the polarizer and the second coating layer.
In this embodiment, the terminal 50 further includes a memory for storing applications and data. The memory stores an application program having executable program code embodied therein. The application programs may constitute various functional modules.
In the present embodiment, the terminal 50 further includes a processor for executing an application program stored in the memory, thereby performing various functional applications and data processing.
In the present embodiment, the terminal 50 further includes a display unit for displaying information input to the terminal 40 by the user or information provided to the user and various graphic user interfaces of the terminal 20. These graphical user interfaces may be made up of graphics, text, icons, video, and any combination thereof. The display unit may include a display panel.
The processor is the control center of the terminal 50. The processor connects various parts of the entire terminal 50 using various interfaces and lines, performs various functions of the terminal 50 and processes data by running or executing an application program stored in the memory and calling data stored in the memory, thereby monitoring the terminal 50 as a whole.
In this embodiment, the terminal 50 further includes a housing for accommodating devices such as a memory, a display unit, and a processor.
In some embodiments, the housing may be a metal housing, such as a metal such as magnesium alloy, stainless steel, and the like. It should be noted that, the material of the housing in the embodiment of the present application is not limited to this, and other methods may also be adopted, such as a plastic housing, a ceramic housing, or a housing structure in which metal and plastic are matched with each other, specifically, the metal part may be formed first, for example, a magnesium alloy substrate is formed by injection molding, and then plastic is injected on the magnesium alloy substrate to form a plastic substrate, so as to form a complete housing structure.
In particular, the terminal 50 also comprises at least one sensor (not shown in the figures), such as light sensors, motion sensors and other sensors. Specifically, the light sensor includes an ambient light sensor that adjusts the brightness of the display panel according to the brightness of ambient light, and a proximity sensor that turns off the display panel and/or the backlight when the terminal 50 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.
Specifically, the terminal 50 further includes a Radio Frequency (RF) circuit for receiving and transmitting electromagnetic waves, and implementing interconversion between the electromagnetic waves and electrical signals, so as to communicate with a communication network or other devices. The RF circuitry may include various existing circuit elements for performing these functions, such as antennas, radio frequency transceivers, digital signal processors, encryption/decryption chips, Subscriber Identity Module (SIM) cards, memory, and so forth. The RF circuitry may communicate with various networks, such as the internet, an intranet, a wireless network, or with other devices over a wireless network. The wireless network may comprise a cellular telephone network, a wireless local area network, or a metropolitan area network. The Wireless network may use various Communication standards, protocols, and technologies, including, but not limited to, Global System for Mobile Communication (GSM), Enhanced Data GSM Environment (EDGE), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Wireless Fidelity (Wi-Fi) (e.g., IEEE802.11 a, IEEE802.11 b, IEEE802.1 g, and/or IEEE802.1 n standards), Voice over Internet Protocol (VoIP), world wide Internet Protocol (Microwave Access), wimax, other suitable short message Communication protocols, and may even include those protocols that have not yet been developed.
Terminal 50 may also include a power source (e.g., a battery) for powering the various components, which in some embodiments may be logically coupled to the processor via a power management system to manage charging, discharging, and power consumption management functions via the power management system. The power supply may also include any component of one or more dc or ac power sources, recharging systems, power failure detection circuitry, power converters or inverters, power status indicators, and the like.
In addition, the terminal 50 may further include a camera module, a bluetooth module, an input module, a wireless fidelity module, and the like, which are not described herein again.
Be different from prior art, the terminal 50 that this application provided, including display device 51, this display device is including range upon range of light guide plate and the display module assembly that sets up, and set up in the sidelight source of light guide plate income plain noodles one side, wherein, the surface that display module assembly was kept away from to the light guide plate is provided with first coating film layer, the first refracting index on first coating film layer is higher than air refracting index, when the sidelight source is luminous, first coating film layer is used for the light total reflection to the display module assembly that the sidelight source produced, thereby light source utilization ratio has been promoted, and then the display effect at terminal has been guaranteed.
In addition to the above embodiments, other embodiments are also possible. All technical solutions formed by using equivalents or equivalent substitutions fall within the protection scope of the claims of the present application.
In summary, although the present application has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, so that the scope of the present application shall be determined by the appended claims.

Claims (10)

1. The display device is characterized by comprising a light guide plate and a display module which are arranged in a stacked mode and a side light source arranged on one side of a light incident surface of the light guide plate, wherein a first coating layer is arranged on the surface, away from the display module, of the light guide plate, the first refractive index of the first coating layer is higher than that of air, and when the side light source emits light, the first coating layer is used for totally reflecting the light generated by the side light source to the display module.
2. The display device according to claim 1, wherein a material of the first plating layer comprises a metal oxide.
3. The display device according to claim 2, wherein the material of the first film layer comprises at least one of aluminum oxide, chromium oxide, and copper oxide.
4. The display device according to claim 1, wherein a second coating layer is disposed on a surface of the light guide plate close to the display module, and a second refractive index of the second coating layer is lower than a refractive index of the light guide plate, so as to refract light totally reflected from the first coating layer to the display module.
5. The display device according to claim 4, wherein a material of the second film layer comprises an inorganic compound.
6. The display device according to claim 4, wherein the first plating film and the second plating film each completely cover a surface of the light guide plate.
7. The display device according to claim 1, wherein the light guide plate comprises glass.
8. The display device according to claim 1, wherein the display module comprises a polarizer and a total reflection display panel which are stacked.
9. The display device according to claim 8, wherein the polarizer and the total reflection display panel are bonded by an optical adhesive.
10. A terminal characterized by comprising a display device according to any one of claims 1 to 9.
CN202110181873.7A 2021-02-09 2021-02-09 Display device and terminal Pending CN112764271A (en)

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