WO2022183680A1 - 反射式显示器以及移动终端 - Google Patents

反射式显示器以及移动终端 Download PDF

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Publication number
WO2022183680A1
WO2022183680A1 PCT/CN2021/111476 CN2021111476W WO2022183680A1 WO 2022183680 A1 WO2022183680 A1 WO 2022183680A1 CN 2021111476 W CN2021111476 W CN 2021111476W WO 2022183680 A1 WO2022183680 A1 WO 2022183680A1
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Prior art keywords
reflective
front light
display
light guide
guide module
Prior art date
Application number
PCT/CN2021/111476
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English (en)
French (fr)
Inventor
林科
陈平
于洋
马记涛
Original Assignee
惠州Tcl云创科技有限公司
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Publication of WO2022183680A1 publication Critical patent/WO2022183680A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL 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
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 
    • G02F1/13—Devices 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL 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
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 
    • G02F1/13—Devices 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133616—Front illuminating devices
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0065—Manufacturing aspects; Material aspects
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL 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
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 
    • G02F1/13—Devices 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL 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
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 
    • G02F1/13—Devices 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL 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
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 
    • G02F1/13—Devices 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133553—Reflecting elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL 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
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 
    • G02F1/13—Devices 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL 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
    • G02F2202/00—Materials and properties
    • G02F2202/28—Adhesive materials or arrangements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL 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
    • G02F2203/00—Function characteristic
    • G02F2203/02—Function characteristic reflective

Definitions

  • terminal products such as smart phones, tablet computers and notebook computers have become indispensable products in daily life.
  • Terminal products are developing towards diversification and personalization. People can work and play through the terminal, such as reading through the terminal to obtain the latest news.
  • These electronic devices are equipped with monitors and display screens (Liquid Crystal Display, LCD), Active-matrix Organic Light-emitting Diode (AMOLED), etc.
  • LCD, AMOLED and other displays require backlight or self-luminous light source to light up, the blue light carried by the light source is harmful to human beings.
  • Eye damage With the prolonged use of display products such as mobile phones and tablets, the incidence of ophthalmic diseases such as cataracts and macular degeneration is increasing.
  • the "blue light" in the visible light spectrum (such as light with wavelengths between 410 and 470 nm) has the greatest impact on the eyes. In general, blue light has the following damages to the human eye:
  • Bright display the reflective display (Reflective Liquid Crystal Display, RLCD), its light-emitting principle is to coat a reflective layer inside the display to achieve light-emitting purposes by reflecting external light.
  • RLCD Reflective Liquid Crystal Display
  • the reflective display screen itself cannot emit light, and it is a kind of screen that needs to reflect the external ambient light to realize the display.
  • the terminal based on this screen design can have a good function of protecting eyesight.
  • the screen cannot display content for the user to read, which is inconvenient for the user to read and affects the user's reading experience. Therefore, when the ambient light is weak, it is necessary to add a front light unit scheme.
  • a reflective display is a display that does not have a backlight and directly acts as a screen light source by reflecting ambient light. It can be further subdivided into passive reflective displays and active reflective displays according to the presence or absence of auxiliary light sources.
  • the display principle of passive reflective display screen is to reflect ambient light by coating a layer of reflective material on the bottom of the liquid crystal panel.
  • the passive reflective display screen has a good display effect under a good ambient light source, and can also reduce power consumption to save power consumption of the whole product.
  • the passive reflective display screen will display less than ideal due to the reduction of reflected light.
  • active reflective display technology that adds auxiliary light sources was born.
  • the "active" reflective display is equivalent to adding a light source to the top of the "passive" reflective display for illumination, so that even when the ambient light is insufficient, the screen can be seen clearly.
  • the current front light basically uses a light-emitting diode (Light Emitting Diode, LED) combined with a light guide plate.
  • the light emitted by the LED is converted into a surface light source through the light guide plate mesh point, and is emitted downward in the dark or dark room.
  • the above-mentioned front light unit provides illumination in the lateral direction, so that the reader can still read clearly under the condition of insufficient external light. However, there is room for improvement in the brightness and uniformity of the illumination.
  • an embodiment of the present application provides a reflective display, including:
  • a front light guide module located between the display screen and the thin film transistor backplane
  • the front light unit is arranged on the side of the front light guide module, and is used for illuminating the front light guide module;
  • the front light guide module includes a plurality of reflective films, which are sequentially arranged along the irradiation direction of the front light unit, wherein the angle between the plurality of reflective films and the display screen is between 0 degrees and 90 degrees.
  • a reflective display is characterized in that it comprises:
  • a front light guide module located between the display screen and the thin film transistor backplane;
  • a front light unit arranged on the side of the front light guide module, for illuminating the front light guide module
  • the front light guide module includes a plurality of reflective films, which are sequentially arranged along the irradiation direction of the front light unit, wherein the angle between the plurality of the reflective films and the display screen is between 0 degrees and 90 degrees;
  • the included angles of a plurality of the reflective films and the display screen are different from each other.
  • a mobile terminal includes the aforementioned reflective display.
  • the present application effectively solves the problems of the prior art through the above-mentioned novel solution without increasing the cost too much, improves the performance of the reflective display well under the economic benefit, and provides a better user experience.
  • FIG. 1 is a schematic diagram of a reflective display according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of light source reflection performed by the reflective display in FIG. 1 .
  • FIG. 3 is a schematic diagram of a reflective display according to another embodiment of the present application.
  • electrically (sexually) coupled or “electrically (sexually) connected” herein includes any means of direct and indirect electrical connection. For example, if it is described in the text that a first device is electrically coupled to a second device, it means that the first device can be directly connected to the second device, or indirectly connected to the second device through other devices or connecting means the second device.
  • transmission and provision of electrical signals are described, those skilled in the art should understand that attenuation or other non-ideal changes may be accompanied by the transmission of electrical signals. In fact, it should be regarded as the same signal.
  • FIG. 1 is a schematic diagram of a reflective display 10 according to the prior art.
  • the reflective display 10 includes a display screen 1, a first optical adhesive layer 2, a front light guide module 3, a polarizing layer 4, a second optical adhesive layer 5, a color filter layer 6, a front light unit 7, Thin Film Transistor (FT) backplane 9 .
  • the display screen 1, the first optical adhesive layer 2, the front light guide module 3, the polarizing layer 4, the second optical adhesive layer 5, the color filter layer 6, the front light unit 7, and the thin film transistor backplane 9 are arranged in order from top to bottom. order stacking.
  • the front light guide module 3 has reflective coatings 8 a arranged in sequence along the irradiation direction of the front light unit 7 .
  • the thin film transistor backplane 9 is used to reflect light
  • the front light guide module 3 is located between the display screen 1 and the thin film transistor backplane 9, and the front light unit 7 is arranged on the side of the front light guide module 3, used for The front light guide module 3 is irradiated.
  • the angle ⁇ between the reflective film and the display screen described in 8a is 45 degrees, which can provide a better downward reflection effect, but the present invention does not specifically limit the size of the included angle
  • the reflective film 8 a is not completely parallel to the front light guide module 3 or not completely perpendicular to the front light guide module 3 , it can convert the light transmitted laterally into the light transmitted downward to the TFT backplane 9 .
  • an angle of 45 degrees should provide better light reflection, but angles between 30 and 60 degrees can provide similar results.
  • the above-mentioned included angle is related to the predetermined distance D.
  • the number of reflective films 8a is to be increased to increase the reflective effect
  • ⁇ can be increased from 45 degrees (for example, to 60 degrees or more) to reduce the shading effect on the light above the display screen 1 .
  • the present invention does not limit the number of the reflective films 8a, the distance between them, and the size of the included angle, and the design must be determined according to the actual situation.
  • a plurality of the reflective films are separated from each other by a predetermined distance, and the predetermined distance may conform to the following formula:
  • the reflective film 8a may be composed of metal compounds, but the present invention is not limited thereto, and the reflective film 8a may also be composed of pure metal or non-metal.
  • the present invention does not limit the conductive properties of the reflective film 8a, that is, the reflective film 8a can be conductive or insulating.
  • the reflective film 8a can be a transparent conductive film material, which can have a transmittance of more than 80% in the visible light range (wavelength 380-780 nm), and a resistance value of less than 1 ⁇ 10 -3 ⁇ cm.
  • TCO Transparent Conducting Oxide
  • a thin film of metal cadmium (Cd) is transparent and conductive after oxidation.
  • the energy gap width of the selected material must be greater than the energy of visible light, that is, greater than 3.0 eV.
  • This pure material is insulating at room temperature.
  • doping some impurities. There are two ways of doping:
  • TCO materials are indium oxide (In2O3), tin oxide (SnO2), zinc oxide (ZnO), cadmium oxide (CdO), cadmium indium oxide (CdIn2O4), cadmium tin oxide (Cd2SnO4), tin zinc oxide (Zn2SnO4) And indium oxide doped (doped) zinc oxide (In2O3-ZnO) and so on.
  • the energy gap of these oxide semiconductors is above 3.0eV, so the energy of visible light (about 1.6-3.3eV) is not enough Band) electrons are excited to the conduction band (Conduction Band), which can only be achieved by light with a wavelength below 350-400nm (such as ultraviolet light). Therefore, light absorption due to the transition of electrons between energy bands does not occur in the visible light region, so the transparent conductive film is transparent in the visible light region.
  • In2O3, SnO2 and ZnO are the three most widely used transparent conductive film materials.
  • ITO film is often used as a transparent electrode material in flat-panel displays. In recent years, with the popularization of flat-panel displays, it has become a very important transparent conductive film material. .
  • aluminum-doped zinc oxide (ZnO:Al, AZO) is considered to have the most potential to replace ITO.
  • the front light guide module 3 includes a plurality of grooves 11 for accommodating the reflective film 8a respectively. These grooves 11 can be reserved in the manufacturing process, and then the reflective material can be embedded in the grooves. 11.
  • FIG. 2 is a schematic diagram of the reflective display 10 in FIG. 1 reflecting light sources.
  • the front light unit 7 After the light emitted by the front light unit 7 enters the light guide plate, it will be reflected downward by the reflective coating 8a, and become the useful light that needs to be directed down to the thin film transistor backplane 9.
  • the thin film transistor backplane 9 The light source is further reflected, so that the user of the viewing device has better brightness visually.
  • the front light unit is a light emitting diode (Light Emitting Diode, LED).
  • the timing of use of the front light unit 7 is to match the reflective display screen, so as to provide enough light for the display screen to display the picture.
  • the front light unit is further matched with the optical structure on the front light guide module 3 to form total reflection inside the composite front light guide module.
  • the optical structure can be of various forms, for example, a dot structure can be provided on the top of the front light guide module 3, or a prism structure can be used as the optical structure to achieve total reflection.
  • the dot structure can be mainly divided into printing type and non-printing type.
  • the printing type is: after the light guide plate is processed, the dots are printed on the reflective surface by printing.
  • the non-printing type is: the dots are directly formed on the reflective surface when the light guide plate is formed.
  • the formation of dot structure can be divided into chemical etching (Etching), precision mechanical characterization (V-cut), photolithography (Stamper), internal diffusion and other methods. Through the size, distribution, regularity and irregularity of the dots, the purpose of changing the development effect can be achieved, and the present invention does not particularly limit the form of the dot structure and its manufacturing method.
  • the material for making the front light guide module 3 may be polymethylmethacrylate (Polymethylmethacrylate, PMMA).
  • the refractive index of polymethyl methacrylate is 1.49, but the present invention is not limited to this, and other materials with different refractive indices can also be used as the material of the front light guide module 3 .
  • Polymethyl methacrylate also known as acrylic or plexiglass, has the advantages of high transparency, low price, and easy machining. It is a commonly used glass substitute material.
  • Polymethyl methacrylate has the characteristics of high light transmittance. The following is the light transmittance performance of polymethyl methacrylate relative to light of different wavelengths:
  • polymethyl methacrylate is the best polymer transparent material at present, with a light transmittance of 92%, which is higher than that of glass.
  • quartz can completely filter ultraviolet light, but the price is high, and ordinary glass only allows 0.6% of ultraviolet light to pass through.
  • polymethyl methacrylate can effectively filter out ultraviolet rays with wavelengths less than 300 nm.
  • polymethyl methacrylate has better stability than polycarbonate under the condition of ultraviolet light.
  • polymethyl methacrylate allows infrared (Infrared, IR) with a wavelength of less than 2800 nm to pass.
  • IR Infrared
  • the special color polymethyl methacrylate allows specific wavelengths of IR to pass through, while blocking visible light (for remote control or thermal sensing, etc.).
  • polymethyl methacrylate has a lower density than glass, and the density of polymethyl methacrylate is about 1.15-1.19 g/cm3, which is about half of glass (2.40-2.80 g/cm3).
  • Polymethyl methacrylate has high mechanical strength. The relative molecular mass of polymethyl methacrylate is about 2 million. It is a long-chain polymer, and the chain forming the molecule is very soft. The strength of methyl acrylate is relatively high, and its tensile and impact resistance is 7 to 18 times higher than that of ordinary glass.
  • polymethyl methacrylate has a lower melting point, which is about 130-140 °C, much lower than the melting point of glass, which is about 1000 degrees.
  • the front light guide module 3 can also be made of polycarbonate (Polycarbonate, PC).
  • the chemical properties of polycarbonate are acid resistance, oil resistance, ultraviolet resistance, and strong alkali resistance, while the physical properties of polycarbonate are colorless, transparent, heat-resistant, impact-resistant, flame-retardant, and have good performance in ordinary use temperatures.
  • Polycarbonate has better impact resistance and a higher index of refraction than comparable polymethyl methacrylate.
  • Polycarbonate has the characteristics of high light transmittance, high refractive index, high impact resistance, dimensional stability and easy processing and molding, and occupies an important position in the optical field.
  • Optical lenses made of optical grade polycarbonate can be used not only for cameras, microscopes, telescopes and optical testing instruments, etc., but also for movie projector lenses, copier lenses, infrared auto-focusing projector lenses, laser beam printer lenses, and various It is widely used in many office equipment and home appliances, such as prisms, polygon mirrors, etc.
  • the color filter is the key component of the colorization of the liquid crystal display. Only through the color filter can the high grayscale black and white liquid crystal display achieve full color Color), also plays a very important role in the manufacture of LCD.
  • the main components of the color filter include a glass substrate (Glass) as a carrier. Substrate), black matrix, color photoresist, protective film and ITO conductive film.
  • the glass used in the color filter of TFT-LCD adopts alkali-free, low-expansion glass to meet the requirements of high yield in the production process.
  • the display screen 1 is a screen of an electronic product such as a smart phone, a tablet computer, and a notebook computer, but the present application is not limited to this.
  • the inventive concepts of the present application can also be extended to electronic devices.
  • the reflective display is described in the above embodiments of the present application
  • the light source reflection method of the present application can also be used in other electronic screen products, such as electronic paper display screens (Electronic Paper Panel) device.
  • the refresh of the e-paper display is discontinuous, and the current graphics can be maintained every time the refresh is completed. Even if the battery is dead, the e-paper display will always display the last picture because of its bistable hysteresis effect. , so even if the battery is dead, the screen will not return to its original state or enter a random chaotic state, but will remain in the final state.
  • the active reflective display technology of the embodiment of the present invention is roughly different from the electronic paper display screen as follows:
  • the multimedia content to be displayed is very rich, and operations such as pop-up menus and window scrolling are also required.
  • the refresh rate of the electronic paper display screen is obviously not enough to meet such requirements.
  • electronic paper display is more suitable for text display with simple content and less changes.
  • FIG. 3 is a schematic diagram of a reflective display 20 according to another embodiment of the present application.
  • the front light guide module 3 of the reflective display 20 is composed of a plurality of sub-blocks and a reflective film 8b.
  • the blocks and the reflective sheets 8b are arranged in a staggered manner.
  • the process of the reflective display 20 is also different from that of the display 10 .
  • each sub-block can be coated with a reflective film during the manufacturing process, and then all the sub-blocks can be spliced to form the entire front light guide module 3 . .
  • the terminal product using the present invention has the advantages of light and thin body and low power consumption (compared to traditional LCD products), and the active reflective display technology reduces the traditional backlight structure, which not only reduces the weight and thickness of the module, but also reduces the power consumption.
  • the power consumption of the display screen is greatly reduced.
  • reflective display products can reduce the overall product thickness by more than 35%, and reduce the overall product weight by more than 40%.
  • the active reflective display technology of the present invention has no backlight structure, the overall power consumption can be reduced by 60% to 90% when LEDs are used in the front light unit.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种反射式显示器（10）以及移动终端，反射式显示器（10）包括显示屏（1）、薄膜晶体管背板（9）、前光导光模块（3）以及前光单元（7）。前光导光模块（3）位于显示屏（1）与薄膜晶体管背板（9）之间，且前光单元（7）设置于前光导光模块（3）的侧边。前光导光模块（3）包括多个反光膜片（8a），依序沿着前光单元（7）的照射方向排列，其中多个反光膜片（8a）与显示屏（1）的夹角介于0度至90度。

Description

反射式显示器以及移动终端
本发明要求于2021年03月01日提交中国专利局、申请号为202110227814.9，发明名称为“反射式显示器”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及显示技术领域，具体涉及一种适用于终端设备的反射式显示器。
 背景技术
随着通信技术日新月异的不断发展，智能手机、平板电脑及笔记本电脑等终端产品已成为日常生活中不可或缺的产品大用。终端产品朝向多样化、个性化的方向发展，人们可以通过终端进行工作与娱乐，比如通过终端进行阅读来获取最新消息。这些电子设备配备有显示器，有显示屏幕（Liquid Crystal Display，LCD）、主动式矩阵有机发光二极管（Active-matrix Organic Light-emitting Diode，AMOLED）等，而LCD、AMOLED等显示器因需要背光或自发光光源才能点亮，光源所携带的蓝光对人眼存在伤害。随着大家对手机、平板等显示产品使用时间的加长，白内障、黄斑变性等眼科疾病的发生率在增加。可视光光谱中“蓝光”（例如波长在410~470nm之间的光线）对眼睛影响最大。大致上，蓝光对人眼有以下伤害：
（1）增加白内障的风险：眼睛在受到波长在410~470nm的高能短波蓝光照射时，晶状体会吸收部分蓝光渐渐混浊形成白内障，剩下的大部分蓝光会穿透晶状体直达视网膜使黄斑区的黄斑毒素增高，从而更容易导致黄斑病变或者白内障。
（2）增加视疲劳：由于蓝光的波长短，聚焦点并不是落在视网膜中心位置，而是离视网膜更靠前一点的位置。要想看清楚，眼球会长时间处于紧张状态，引起视疲劳。长时间的视疲劳，可能导致近视度数的加深、看东西出现复视、阅读时易串行、注意力无法集中、近距离工作模糊等症状，影响学习与工作效率。
（3）导致失眠：夜间进入睡眠状态时，大脑会分泌褪黑色素促进睡眠，消除疲劳，甚至还可以起到杀死癌细胞的作用。但是蓝光一定程度上会抑制褪黑色素的分泌，从而影响睡眠质量不高甚至难以入睡。这可能也是我们平时睡前玩平板或者手机，难以入睡的原因。
在对现有技术的研究和实践过程中，本申请实施例的发明人发现，为了给用户提供更舒适的阅读体验，目前市面上大部分显示器厂商对此推出一种不需要背光或自发光点亮的显示器，即反射式显示屏（Reflective Liquid Crystal Display，RLCD），其发光原理为显示器内镀一层反射层，通过反射外界光达到发光目的。
然而，反射式显示屏本身不能够发光，是一种需要靠反射外界环境光来实现显示的一种屏幕，基于此种屏幕设计的终端，可以有很好的保护视力功能。但是具有反射式显示屏的终端在缺乏外界光照射时，屏幕则无法显示内容供用户阅览，并不方便用户的阅读，影响用户的阅读体验。因此，当环境光较弱时，便需要添加前光单元方案。
更确切来说，反射式显示器是一种没有背光、直接通过反射环境光来充当屏幕光源的显示器，可根据有无辅助光源更细分为被动式反射式显示屏和主动式反射式显示屏。被动式反射式显示屏显示原理是利用在液晶面板底部镀上一层反光材料的方式来反射环境光。被动式反射式显示屏在良好的环境光源下，具有较好的显示效果，同时也能降低功耗实现整机产品节省功耗。但环境光条件较差时，被动式反射式显示屏会因反射光减少而显示效果不太理想。为了改善此问题，诞生了添加辅助光源的主动式反射式显示技术。“主动式”反射式显示屏相当于在“被动式”反射显示屏的顶部加入了光源作为照明，如此一来即使在环境光线不足的时候，也可以看见清晰屏幕。
 技术问题
目前的前光基本都是使用发光二极管（Light Emitting Diode，LED）结合导光板的方式，通过导光板网点将LED发出的光转化为面光源向下发射，并且在黑夜或暗室的使用情境下通过上述前光单元于侧向上提供照明，以满足在外界光不足的情况仍使读者能够清晰阅读。然而，照明的亮度以及均匀度均有改善的空间。
 技术解决方案
一方面，本申请实施例提供了一种反射式显示器，包括：
显示屏；
薄膜晶体管背板，用于反射光线；
前光导光模块，位于显示屏与薄膜晶体管背板之间；以及
前光单元，设置于前光导光模块的侧边，用于对前光导光模块进行照射；
其中前光导光模块包括多个反光膜片，依序沿着前光单元的照射方向排列，其中多个反光膜片与显示屏的夹角介于0度至90度。
另一方面，一种反射式显示器，其特征在于，包括：
显示屏；
薄膜晶体管背板，用于反射光线；
前光导光模块，位于所述显示屏与所述薄膜晶体管背板之间；以及
前光单元，设置于所述前光导光模块的侧边，用于对所述前光导光模块进行照射；
其中前光导光模块包括多个反光膜片，依序沿着所述前光单元的照射方向排列，其中多个所述反光膜片与所述显示屏的夹角介于0度至90度；
多个所述反光膜片与所述显示屏的多个所述夹角互不相同。
又一方面，一种移动终端，包括前述反射式显示器。
 有益效果
本申请通过上述新颖的方案有效的解决现有技术的问题，并且没有增加太多成本，在符合经济效益下很好地改善了反射式显示器的效能，提供用户更好的体验。
 附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是根据本申请实施例的反射式显示器的示意图。
图2是图1中的反射式显示器进行光源反射的示意图。
图3是根据本申请另一实施例的反射式显示器的示意图。
 本发明的实施方式
以下各实施例的说明是参考附加的图式，用于例示本申请可用于实施的特定实施例。本申请所提到的方向用语，例如“上”、“下”、“前”、“后”、“左”、“右”、“内”、“外”、“侧面”等，仅是参考附加图式的方向。因此，使用的方向用语是用于说明及理解本申请，而非用于限制本申请。
揭露特别以下述例子加以描述，这些例子仅是用于举例说明而已，因为对于熟习此技艺者而言，在不脱离本揭示内容的精神和范围内，当可作各种的更动与润饰，因此本揭示内容的保护范围当视后附的权利要求所界定者为准。在通篇说明书与权利要求中，除非内容清楚指定，否则“一”以及“所述”的意义包括这一类叙述包括“一或至少一”所述组件或成分。此外，如本揭露所用，除非从特定上下文明显可见将复数个排除在外，否则单数冠词亦包括复数个组件或成分的叙述。而且，应用在此描述中与下述的全部权利要求中时，除非内容清楚指定，否则“在其中”的意思可包括“在其中”与“在其上”。在通篇说明书与权利要求所使用的用词，除有特别注明，通常具有每个用词使用在此领域中、在此揭露的内容中与特殊内容中的平常意义。某些用于描述本揭露的用词将于下或在此说明书的别处讨论，以提供从业人员在有关本揭露的描述上额外的引导。在通篇说明书的任何地方的例子，包括在此所讨论的任何用词的例子的使用，仅是用于举例说明，当然不限制本揭露或任何例示用词的范围与意义。同样地，本揭露并不限于此说明书中所提出的各种实施例。
在此所使用的用词“大约”、“约”或“近乎”应大体上意味在给定值或误差范围在20%以内，较佳是在10%以内。此外，在此所提供的数量可为近似的，因此意味着若无特别陈述，可用词“大约”、“约”或“近乎”加以表示。当数量、浓度或其他数值或参数有指定的范围、较佳范围或表列出上下理想值的时，应视为特别揭露由任何上下限的数对或理想值所构成的所有范围，不论所述等范围是否分别揭露。举例而言，如揭露范围某长度为X公分到Y公分，应视为揭露长度为H公分且H可为X到Y之间的任意实数。
此外，“电（性）耦接”或“电（性）连接”在此是包括任何直接及间接的电气连接手段。举例而言，若文中描述一第一装置电性耦接于一第二装置，则代表所述第一装置可直接连接于所述第二装置，或透过其他装置或连接手段间接地连接至所述第二装置。另外，若描述关于电信号的传输、提供，熟习此技艺者应可了解电信号的传递过程中可能伴随衰减或其他非理想性的变化，但电信号传输或提供的来源与接收端若无特别叙明，实质上应视为同一信号。举例而言，若由电子电路的端点A传输（或提供）电信号S给电子电路的端点B，其中可能经过晶体管开关的源极和漏极两端及/或可能的杂散电容而产生电压降，但此设计的目的若非刻意使用传输时产生的衰减或其他非理想性的变化而达到某些特定的技术效果，电信号S在电子电路的端点A与端点B应可视为实质上为同一信号。
可了解如在此所使用的用词“包括”、“具有”、“含有”等等，为开放性的用词，即意指包括但不限于。另外，本发明的任一实施例或权利要求不须达成本发明所揭露的全部目的或优势或特点。此外，摘要部分和标题仅是用来辅助专利文件搜寻的用，并非用来限制发明作的权利要求。
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。此外，应当理解的是，此处所描述的具体实施方式仅用于说明和解释本申请，并不用于限制本申请。在本申请中，在未作相反说明的情况下，使用的方位词如“上”和“下”通常是指装置实际使用或工作状态下的上和下，具体为附图中的图面方向，而“内”和“外”则是针对装置的轮廓而言的。
请参照附图中的图式，其中相同的组件符号代表相同的组件。以下的说明是基于所例示的本发明具体实施例，其不应被视为限制本发明未在此详述的其它具体实施例。
请参考图1，图1是根据现有技术的反射式显示器10的示意图。如图1所示，反射式显示器10包括显示屏1、第一光学胶层2、前光导光模块3、偏光层4、第二光学胶层5、彩色滤光层6、前光单元7、薄膜晶体管（Thin Film Transistor，FT）背板9。显示屏1、第一光学胶层2、前光导光模块3、偏光层4、第二光学胶层5、彩色滤光层6、前光单元7、薄膜晶体管背板9是由上至下依序堆叠。前光导光模块3具有沿着前光单元7照射方向依序排列的反光镀膜8a。薄膜晶体管背板9用于反射光线，前光导光模块3位于显示屏1与薄膜晶体管背板9之间，且所述前光单元7设置于所述前光导光模块3的侧边，用于对所述前光导光模块3进行照射。
可选地，在本申请的一些实施例中，第一光学胶层2与第二光学胶层5的材料为光学胶（Optical Clear Adhesive，OCA）或光学胶脂（Optical Clear Resin，OCR）。在本申请的一些实施例中，反射式显示器10可为手机、平板装置或笔记本计算机，且显示屏1可为所述装置的触控式面板或非触控式面板。
前光导光模块3包括多个反光膜片8a，依序沿着前光单元7的照射方向排列，其中反光膜片8a与显示屏1的夹角θ介于0度至90度。可选地，在本申请的一些实施例中，反光膜片8a与所述显示屏1的夹角互为相同，然而也可根据实际设计需求将这些夹角设计为不完全相同。在本申请的一较佳实施例中，反光膜片与8a所述显示屏的夹角θ为45度，如此能够提供较佳的向下反射效果，但本发明并不特别限定夹角的大小，理论上只要反光膜片8a并非完全平行于前光导光模块3或并非完全垂直于前光导光模块3，皆能够将侧向传递的光线转化为向下传递的光线给薄膜晶体管背板9。在此基础上，45度的夹角应能提供较好的光线反射效果，但30至60度之间的夹角也可以提供相似的效果。
任意两个相邻反光膜片8a之间相隔预定间距D，全部的反光膜片8a可设计为具有相同间距或不同间距。在设计上，上述夹角会与预定间距D有关联性，举例来说，若要增加反光膜片8a的数量来增加反光效果，倘若相邻的两个反光膜片8a彼此太过靠近，则会对来自显示屏1上方的光线造成遮蔽效果，影响到薄膜晶体管背板9利用环境自然光来增加照明效果。此时可以将θ由45度提高（例如提高至60度或以上）来减轻对于显示屏1上方光线的遮蔽效果。总的来说，本发明对于反光膜片8a的数量、彼此的间距以及夹角大小并无限制，如何设计须根据实际状况来决定。
可选地，在本申请的一些实施例中，多个所述反光膜片彼此相隔一预定间距，所述预定间距可符合以下公式：
D＞0.2Lcosθ
其中L代表所述反光膜片的长度，以上条件仅作为本发明的优选实施例，并不作为本发明范畴的一种限制。
此外，在本申请的一些实施例中，所述反光膜片的垂直高度可符合以下公式：
0.5H＜Lsinθ＜0.9H
其中H代表所述前光导光模块的高度，以上条件仅作为本发明的优选实施例，并不作为本发明范畴的一种限制。
可选地，在本申请的一些实施例中，反光膜片8a可由金属化合物所组成，但本发明不限于此，反光膜片8a也可为纯金属或非金属组成。此外，本发明并无限定反光膜片8a的导电特性，也就是说反光膜片8a可为导电或绝缘。举例来说，反光膜片8a可为透明导电膜材料，其在可见光范围内（波长380-780 nm）可具有 80%以上的透光率，电阻值可低于1×10 -3Ωcm。因应制程上的需要，透明导电膜由于兼具透明与导电两种特性，近年来的应用领域及需求量不断地扩大。制造透明导电膜的材料大致上可归纳为两类，一类是薄金属膜，另一类是金属氧化物膜，介绍如下：
1.薄金属膜：
由于金属材料本身就可导电，故薄金属膜是良好的红外线反射体，同时也能反射可见光，其自由载子的浓度约为10 23/cm 3，使得金属的电浆频率落在紫外光区，在可见光区是不透明的，但只要金属膜厚度很小时也会有某种程度的透光性，即薄金属膜（如金、银、铜、铂等薄膜），如果要增加可见光区的透明度，同时又维持红外光区的强反射性，必须将金属制成薄膜，厚度较佳为低于10nm。理论上，薄金属膜是一种良好的透明导电膜。
2.金属氧化物半导体膜：
关于透明导电氧化物（Transparent Conducting Oxide，TCO），举例来说，金属镉（Cd）的薄膜在氧化后具有透明又导电的性质。而为了获得可见光区的透明性，所选用材料的能隙宽度必须大于可见光的能量，即须大于3.0eV以上。此种纯材料在室温下是绝缘的，为了增加它的导电性，常会藉由掺入一些杂质来改善其电性，而掺杂的方式有下列两种：
（1）掺入比原化合物的阳离子多一价的金属离子，如在氧化铟中掺锡的ITO（In2O3:SnO2）膜、在氧化锡中掺锑的ATO（Sb2O3:SnO2）膜，或掺入比其阴离子少一价的非金属离子，如氧化锡中氟气的FTO（F2:SnO2）膜。
（2）制造非化学计量（Nonstoichiometric）的半导体化合物：即半导体内含有阴离子空缺。
上述两种掺杂方式都能有效提高膜的导电度，对此类的透明导电膜而言，它的性质和掺杂离子有密切的关系。意味着，要得到良好的透明导电膜必须要控制薄膜的氧化状态及杂质离子掺入的质和量。代表性的TCO材料有氧化铟（In2O3）、氧化锡（SnO2）、氧化锌（ZnO）、氧化镉（CdO）、氧化铟镉（CdIn2O4）、氧化锡镉（Cd2SnO4）、氧化锡锌（Zn2SnO4）和氧化铟掺杂（doped）氧化锌（In2O3-ZnO）等。这些氧化物半导体的能隙都在3.0eV以上，所以可见光（约1.6-3.3eV）的能量不足以将价带（Valence Band）的电子激发到导带（Conduction Band），只有在波长 350-400nm以下的光（例如紫外线）才能实现。因此，由电子在能带间迁移而产生的光吸收，在可见光范围中不会发生，所以透明导电膜在可见光区域为透明。In2O3、SnO2 与ZnO是目前三种最广泛使用的透明导电膜材料，其中ITO薄膜常被用于平面显示器中作为透明电极材料，近年来随着平面显示器的普及已成为非常重要的透明导电膜材料。此外，掺杂铝的氧化锌（ZnO:Al，AZO）被认为最具有取代 ITO 的潜力。
在图1的实施例中，前光导光模块3包括多个凹槽11，分别用于容置反光膜片8a，在制程上可以先预留这些凹槽11，接着再将反光材料嵌入凹槽11。
请进一步参考图2，图2是图1中的反射式显示器10进行光源反射的示意图。如图2的箭头标号所示，前光单元7发出的光进入导光板后，会被反光镀膜8a向下反射，变成所需向下到薄膜晶体管背板9的有用光线，薄膜晶体管背板9再进一步反射光源，使得观看装置的用户在视觉上有更好的亮度。
可选地，在本申请的一些实施例中，所述前光单元是发光二极管（Light Emitting Diode，LED）。前光单元7的使用时机为搭配反射型显示屏，以提供显示屏足够的光线已显示画面。除了通过反光镀膜8a反射达到增加亮度的效果，前光单元进一步搭配前光导光模块3上的光学结构以形成复合前光导光模块内部的全反射。所述光学结构可以是各种形式的结构，例如可于前光导光模块3的顶部设置网点结构，或是采用棱镜结构作为实现全反射的光学结构。网点结构主要可分成印刷式和非印刷式，其中印刷式为：导光板完成外形加工后，以印刷方式将网点印在反射面。非印刷式为：将网点在导光板成形时直接成形在反射面。网点结构的形成又可分为化学蚀刻（Etching）、精密机械刻画法（V-cut）、光微影法（Stamper）、内部扩散等方法。通过网点的尺寸、分布、规则性和不规则性，可达到改变显像效果的目的，而本发明并不特别限定网点结构的形式和其制作方式。
可选地，在本申请的一些实施例中，制作前光导光模块3的材料可以是聚甲基丙烯酸甲酯（Polymethylmethacrylate，PMMA）。聚甲基丙烯酸甲酯的折射率为1.49，但本发明并不以此为限，具有不同折射率的其他材料也可作为前光导光模块3的材料。聚甲基丙烯酸甲酯又称做压克力（Acrylic）或有机玻璃，具有高透明度、低价格、易于机械加工等优点，是平常经常使用的玻璃替代材料。聚甲基丙烯酸甲酯具有高透光率的特性，以下为聚甲基丙烯酸甲酯相对于不同波长的光线的透光表现：
（1）对于可见光而言，聚甲基丙烯酸甲酯是目前最优良的高分子透明材料，透光率达到92％，比玻璃的透光度高。
（2）对于紫外光而言，石英能完全过滤紫外线，但价格高昂，普通玻璃只会让0.6％的紫外线透过。相较下，聚甲基丙烯酸甲酯能有效滤除波长小于300nm的紫外线。另一方面，在照射紫外光的状况下，与聚碳酸酯相比，聚甲基丙烯酸甲酯具有更佳的稳定性。
（3）对于红外光而言，聚甲基丙烯酸甲酯允许小于2800nm波长的红外线（Infrared，IR）通过。此外，特殊颜色聚甲基丙烯酸甲酯可以让特定波长IR透过，同时阻挡可见光（应用于远程控制或热感应等）。
除了以上特性，聚甲基丙烯酸甲酯具有比玻璃低的密度，聚甲基丙烯酸甲酯的密度大约在 1.15-1.19 g/cm3，约为玻璃（2.40-2.80 g/cm3）的一半。聚甲基丙烯酸甲酯具有较高的机械强度，聚甲基丙烯酸甲酯的相对分子质量大约为200万，是长链的高分子聚合物，而且形成分子的链很柔软，因此，聚甲基丙烯酸甲酯的强度比较高，抗拉伸和抗冲击的能力比普通玻璃高7～18倍。此外，聚甲基丙烯酸甲酯具有较低的熔点，其熔点约为130～140 °C，比玻璃约1000度的熔点低很多。
除了聚甲基丙烯酸甲酯，前光导光模块3也可采用聚碳酸酯（Polycarbonate，PC）。聚碳酸酯的化学性质为耐酸、不耐油，不耐紫外线，不耐强碱，而聚碳酸酯的物理性质为无色透明，耐热，抗冲击，阻燃，在普通使用温度内都有良好的机械性能。和性能接近的聚甲基丙烯酸甲酯相比，聚碳酸酯的耐冲击性能更好且折射率更高。聚碳酸酯具有高透光率、高折射率、高抗冲性、尺寸稳定性及易加工成型等特点，在光学领域占有重要的位置。采用光学级聚碳酸配制作的光学透镜不仅可用于照相机、显微镜、望远镜及光学测试仪器等，还可用于电影投影机透镜、复印机透镜、红外自动调焦投影仪透镜、激光束打印机透镜，以及各种棱镜、多面反射镜等诸多办公设备和家电领域，其应用范围极广。
可选地，在本申请的一些实施例中，所述第一光学胶层2与所述第二光学胶层5的材料为光学胶或光学胶脂（Optical Clear Resin，OCR）。
关于彩色滤光层6，一般来说，彩色滤光片为液晶显示器彩色化的关键零组件，透过彩色滤光片才能让高灰阶数的黑白液晶显示器到达全彩化（Full Color），在LCD的制造上也扮演相当重要的角色。彩色滤光片主要组成包括作为载体的玻璃基板（Glass Substrate）、黑色矩阵、彩色光阻、保护膜及ITO导电膜。TFT-LCD的彩色滤光片使用的玻璃采用无碱性、低膨胀玻璃，以符合制作过程高良率的要求。
可选地，在本申请的一些实施例中，显示屏1为智能手机、平板电脑及笔记本电脑等电子产品的屏幕，但本申请不以此为限。本申请的发明概念也可延伸到电子装置。确切来说，虽然以上本申请的实施例中仅以反射式显示器作说明，但本申请的光源反射方式亦可被其他电子屏幕产品所采用，例如电子纸显示屏（Electronic Paper Panel）装置。电子纸显示屏的刷新是不连续的，每一次刷新完成就可以保持现在的图形，即使电池没电，电子纸显示屏也会一直显示最后的画面，那是因为其具有双稳态磁滞效应，所以即便电池没电，画面也不会回复原状或者进入随机的混沌状态，而是保持最后的状态。总的来说，本发明实施例的主动式反射式显示技术与电子纸显示屏大致上有以下差异：
（1）电子纸显示屏显示相比LCD显示屏，电子纸显示屏不必不断刷新就可以显示内容，这降低了耗电和辐射。
（2）不管是手机还是电脑，需要显示的多媒体内容都很丰富，同时还要进行弹出菜单、窗口滚动等操作，电子纸显示屏的刷新率显然不足以满足这样的要求。和LCD显示屏相比，电子纸显示屏更适用于内容简单、变化较少的文字显示。
图3是根据本申请另一实施例的反射式显示器20的示意图，如图3所示，反射式显示器20的前光导光模块3由多个子区块以及反光膜片8b所构成，这些子区块以及反光膜片8b以互相交错的方式排列。基于结构上的不同，反射式显示器20在制程上也会与显示器10不同。举例来说，由于反光膜片8b贯穿了前光导光模块3的整个截面，在制程上可先将每个子区块镀上反光膜，接着再将所有子区块拼接成整个前光导光模块3。除了在制程上不同，显示器20中反光膜片8b的总长度也相较显示器10中的反光膜片8a更长，但除了上述以外，在材料的选取和光学效果上显示器20皆与显示器10相仿，因此细节部份在此不另作赘述。
综上所述，本申请通过上述新颖的方案有效的解决，并且没有增加太多成本，在符合经济效益下很好地改善了反射式显示器的效能，提供用户更好的体验。更具体地，本发明的前光导光板方案采用阵列式镀膜结构，很好的提升光源的反射效果，因此本发明的前光单元设计可以提供用户良好的阅读舒适度。
此外，采用本发明的终端产品具备机身轻薄、功耗低（相对于传统LCD产品）的优势，且主动式反射式显示技术减少了传统背光结构，不仅减轻了模组的重量和厚度，也大大减少了显示屏功耗。相比于一般显示屏产品，反射式显示品产品可以将整体产品厚度约降低35%以上，并且将整体产品重量降低40%以上。此外，由于本发明主动式反射式显示技术没有背光结构，在加上前光单元采用LED的情况下，整体功耗可以下降 60%~90%。
另外，由于本发明反射式显示技术中使用的光源主要是反射环境光或反射前光单元，所以与传统产品相比，蓝光危害会更低。此外，背光和OLED显示屏很难在直射的阳光下阅读，而使用反射式显示技术透过环境光反射原理并不会抵制阳光，而自带前光单元的设计也能提供在较暗环境下进行阅读。另一方面，本发明反射式显示技术的节省功耗功效可实现超长待机行动装置或低功耗电子广告栏等产品。
本申请实施例还提供可一种移动终端，包括上述反射式显示器，该反射式显示器的详细情况请参照前述实施例，此处不再赘述。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。上述所描述的实施例仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得所有其他实施例，除本申请实施例提到的与本申请实施例方案一致的此类设计，都属于本申请保护的范围。
以上对本申请实施例所提供的适用于终端设备的反射式显示器进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的技术方案及其核心思想。本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换，而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例的技术方案的范围。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用于限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。
以上对本申请实施例所提供的适用于终端设备的反射式显示器进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想。同时，对于本领域的技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变的地方，综上所述，本说明书内容不应理解为对本申请的限制。

Claims (17)

  1. 一种反射式显示器，其特征在于，包括：
    显示屏；
    薄膜晶体管背板，用于反射光线；
    前光导光模块，位于所述显示屏与所述薄膜晶体管背板之间；以及
    前光单元，设置于所述前光导光模块的侧边，用于对所述前光导光模块进行照射；
    其中前光导光模块包括多个反光膜片，依序沿着所述前光单元的照射方向排列，其中多个所述反光膜片与所述显示屏的夹角介于0度至90度。
  2. 如权利要求1所述的反射式显示器，其特征在于，多个所述反光膜片与所述显示屏的多个所述夹角互为相同。
  3. 如权利要求2所述的反射式显示器，其特征在于，多个所述反光膜片与所述显示屏的多个所述夹角皆为45度。
  4. 如权利要求1所述的反射式显示器，其特征在于，多个所述反光膜片彼此相隔一预定间距，所述预定间距符合以下公式：
    D＞0.2Lcosθ
    其中D代表所述预定间距、L代表所述反光膜片的长度、θ代表所述反光膜片与所述显示屏的夹角。
  5. 如权利要求1所述的反射式显示器，其特征在于，其中所述反光膜片的垂直高度符合以下公式：
    0.5H＜Lsinθ＜0.9H
    其中H代表所述前光导光模块的高度、L代表所述反光膜片的长度、θ代表所述反光膜片与所述显示屏的夹角。
  6. 如权利要求1所述的反射式显示器，其特征在于，所述反光膜片由金属化合物所组成。
  7. 如权利要求1所述的反射式显示器，其特征在于，所述前光导光模块由聚甲基丙烯酸甲酯或聚碳酸酯所组成。
  8. 如权利要求1所述的反射式显示器，其特征在于，所述前光导光模块包括多个凹槽，分别用于容置多个所述多个反光膜片。
  9. 如权利要求1所述的反射式显示器，其特征在于，所述前光导光模块由多个子区块以及多个所述反光膜片所构成，多个所述子区块以及多个所述反光膜片以互相交错的方式排列。
  10. 一种反射式显示器，其特征在于，包括：
    显示屏；
    薄膜晶体管背板，用于反射光线；
    前光导光模块，位于所述显示屏与所述薄膜晶体管背板之间；以及
    前光单元，设置于所述前光导光模块的侧边，用于对所述前光导光模块进行照射；
    其中前光导光模块包括多个反光膜片，依序沿着所述前光单元的照射方向排列，其中多个所述反光膜片与所述显示屏的夹角介于0度至90度；
    多个所述反光膜片与所述显示屏的多个所述夹角互不相同。
  11. 如权利要求10所述的反射式显示器，其特征在于，多个所述反光膜片彼此相隔一预定间距，所述预定间距符合以下公式：
    D＞0.2Lcosθ
    其中D代表所述预定间距、L代表所述反光膜片的长度、θ代表所述反光膜片与所述显示屏的夹角。
  12. 如权利要求10所述的反射式显示器，其特征在于，其中所述反光膜片的垂直高度符合以下公式：
    0.5H＜Lsinθ＜0.9H
    其中H代表所述前光导光模块的高度、L代表所述反光膜片的长度、θ代表所述反光膜片与所述显示屏的夹角。
  13. 如权利要求10所述的反射式显示器，其特征在于，所述反光膜片由金属化合物所组成。
  14. 如权利要求10所述的反射式显示器，其特征在于，所述前光导光模块由聚甲基丙烯酸甲酯或聚碳酸酯所组成。
  15. 如权利要求10所述的反射式显示器，其特征在于，所述前光导光模块包括多个凹槽，分别用于容置多个所述多个反光膜片。
  16. 如权利要求10所述的反射式显示器，其特征在于，所述前光导光模块由多个子区块以及多个所述反光膜片所构成，多个所述子区块以及多个所述反光膜片以互相交错的方式排列。
  17. 一种移动终端，其特征在于，包括权利要求1至16任意一项所述的反射式显示器。
PCT/CN2021/111476 2021-03-01 2021-08-09 反射式显示器以及移动终端 WO2022183680A1 (zh)

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