WO2021109261A1 - Lcd显示装置、oled显示装置 - Google Patents

Lcd显示装置、oled显示装置 Download PDF

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Publication number
WO2021109261A1
WO2021109261A1 PCT/CN2019/126524 CN2019126524W WO2021109261A1 WO 2021109261 A1 WO2021109261 A1 WO 2021109261A1 CN 2019126524 W CN2019126524 W CN 2019126524W WO 2021109261 A1 WO2021109261 A1 WO 2021109261A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
layer
crystal lens
display device
lcd display
Prior art date
Application number
PCT/CN2019/126524
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English (en)
French (fr)
Inventor
查国伟
刘凡成
Original Assignee
武汉华星光电技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 武汉华星光电技术有限公司 filed Critical 武汉华星光电技术有限公司
Priority to US16/762,967 priority Critical patent/US11448935B2/en
Publication of WO2021109261A1 publication Critical patent/WO2021109261A1/zh

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    • 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
    • G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/13793—Blue phases
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    • 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
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    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
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    • 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
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    • 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
    • G02F1/133528—Polarisers
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    • 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
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    • 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
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    • G02F1/1333—Constructional arrangements; Manufacturing methods
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    • 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
    • G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
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Definitions

  • the present invention relates to the field of display technology, in particular to an LCD display device and an OLED display device.
  • the existing mainstream solutions based on the fingerprint recognition technology under the LCD screen include: hole imaging, lens or lens array imaging, etc., but each has its own shortcomings.
  • under-screen fingerprint recognition of hole imaging is to set holes on the side of the color filter, and use the principle of small hole imaging to realize under-screen fingerprint recognition.
  • the fingerprint covers the pixel opening area, there will be light reflection, and the light intensity transmitted through the opening area is much greater than the light intensity transmitted through the hole, resulting in serious signal noise and affecting the fingerprint recognition sensor signal collection.
  • the sensor recognition accuracy is not enough Gaoshi can't even realize fingerprint recognition under the screen.
  • the tiny lens is large in size, heavy in mass, single in shape, fragile, and has problems such as difficulty in module design, difficulty in mass production, low production efficiency, and high cost.
  • the cover glass in order to protect the panel or to give a certain object distance to the lens, it is necessary to attach the cover glass. Because under normal circumstances, the refractive index of the adhesive (such as OCA) and the lens are relatively close, which will greatly weaken the effect of the lens or even lose the lens effect.
  • the tiny lens exists in the form of a cured lens, which will affect the normal display while realizing fingerprint recognition under the screen.
  • the present invention provides an LCD display device and an OLED display device, which can be used in the design scheme of fingerprint recognition under LCD and OLED screens, can improve the utilization rate of light, reduce the background signal ratio, and improve the accuracy of fingerprint recognition under the screen.
  • the liquid crystal lens layer is used to replace the ordinary micro lens, which improves the difficulty in the design of the ordinary micro lens module, which is not conducive to the problem of assembly. Improve the micro lens because it exists in a cured form, which affects the normal display of the display.
  • An embodiment of the present invention provides an LCD display device, the LCD display device includes a backlight assembly arranged at the bottom, a display assembly arranged on the backlight assembly, and a liquid crystal lens layer arranged above the display assembly;
  • a fingerprint identification unit is also included in the display assembly
  • the liquid crystal lens layer is in a lens state when the fingerprint identification unit is working, and the liquid crystal lens layer is in a non-lens state when the fingerprint identification unit is not working;
  • the liquid crystal lens layer includes a liquid crystal lens based on nematic liquid crystal and a liquid crystal lens based on blue phase liquid crystal; the difference between the long axis and the short axis of the liquid crystal molecules in the liquid crystal lens layer and the difference between the liquid crystal molecules
  • the product of the distance values is between 20 and 50.
  • the display assembly includes a bottom polarizer, a TFT layer disposed on one side of the bottom polarizer, and a TFT layer disposed on the side of the TFT layer away from the bottom polarizer.
  • the liquid crystal layer is provided with a color filter on the side of the liquid crystal layer away from the TFT layer, and the fingerprint recognition unit is provided on the side of the color filter close to the liquid crystal layer.
  • a top polarizer is provided on the other side of the light sheet;
  • the fingerprint recognition unit further includes a fingerprint recognizer
  • liquid crystal lens layer is arranged on the side of the top polarizer away from the color filter;
  • the LCD display device further includes a cover plate, and the cover plate is attached to the liquid crystal lens layer.
  • the liquid crystal lens layer includes an upper substrate, a lower substrate, and a liquid crystal lens disposed between the upper substrate and the lower substrate, and the upper substrate An upper electrode is provided facing the cell alignment direction, and the lower substrate is provided with a lower electrode facing the cell alignment direction; the liquid crystal lens forms a lens array under the action of the upper electrode and the lower electrode.
  • a black mask layer is provided on the side of the color filter of the display assembly away from the liquid crystal layer, and the lens array of the liquid crystal lens layer corresponds to the black color filter.
  • the mask layer forms an array of holes;
  • the black mask layer occupies part of the open area.
  • the black mask layer is a black matrix or a black metal.
  • the embodiment of the present invention also provides an LCD display device, the LCD display device includes a backlight assembly arranged at the bottom, a display assembly arranged on the backlight assembly, and a liquid crystal lens layer arranged above the display assembly;
  • a fingerprint identification unit is also included in the display assembly
  • the liquid crystal lens layer is in a lens state when the fingerprint identification unit is working, and the liquid crystal lens layer is in a non-lens state when the fingerprint identification unit is not working.
  • the liquid crystal lens layer includes a liquid crystal lens based on nematic liquid crystal and a liquid crystal lens based on blue phase liquid crystal.
  • the display assembly includes a bottom polarizer, a TFT layer disposed on one side of the bottom polarizer, and a TFT layer disposed on the side of the TFT layer away from the bottom polarizer.
  • the liquid crystal layer is provided with a color filter on the side of the liquid crystal layer away from the TFT layer, and the fingerprint recognition unit is provided on the side of the color filter close to the liquid crystal layer.
  • a top polarizer is provided on the other side of the light sheet;
  • the fingerprint recognition unit further includes a fingerprint recognizer
  • liquid crystal lens layer is arranged on the side of the top polarizer away from the color filter;
  • the LCD display device further includes a cover plate, and the cover plate is attached to the liquid crystal lens layer.
  • the liquid crystal lens layer includes an upper substrate, a lower substrate, and a liquid crystal lens disposed between the upper substrate and the lower substrate, and the upper substrate An upper electrode is provided facing the cell alignment direction, and the lower substrate is provided with a lower electrode facing the cell alignment direction; the liquid crystal lens forms a lens array under the action of the upper electrode and the lower electrode.
  • the product of the difference between the long axis and the short axis of the liquid crystal molecules in the liquid crystal lens layer and the distance between the liquid crystal molecules is between 20 and 50.
  • a black mask layer is provided on the side of the color filter of the display assembly away from the liquid crystal layer, and the lens array of the liquid crystal lens layer corresponds to the black color filter.
  • the mask layer forms an array of holes;
  • the black mask layer occupies part of the open area.
  • the black mask layer is a black matrix or a black metal.
  • An embodiment of the present invention also provides an OLED display device, the OLED display device includes a display component, a double-layer liquid crystal lens layer disposed on one side of the display component, and a double-layer liquid crystal lens layer disposed on the double-layer liquid crystal lens layer away from the display component
  • One side of the fingerprint recognition unit, the side of the double-layer liquid crystal lens layer facing the fingerprint recognition unit is provided with a passband reverse film, and the OLED display screen is arranged on the double-layer liquid crystal lens layer away from the passband reverse film One side of the film and a cover plate arranged on the other side of the OLED display screen;
  • the fingerprint recognition unit includes a fingerprint recognizer
  • the double-layer liquid crystal lens layer is in a lens state when the fingerprint recognition unit is in operation, and the double-layer liquid crystal lens layer is in a non-lens state when the fingerprint recognition unit is not in operation.
  • the two-layer liquid crystal lens layer includes a liquid crystal lens based on nematic liquid crystal and a liquid crystal lens based on blue phase liquid crystal.
  • the double-layer liquid crystal lens layer includes a first liquid crystal lens layer and a second liquid crystal lens layer, and the first liquid crystal lens layer is electrically connected to the second liquid crystal lens layer ;
  • the first liquid crystal lens layer includes a first upper substrate, a first lower substrate, and a first liquid crystal lens arranged between the first upper substrate and the first lower substrate, and
  • the first upper substrate is provided with a first upper electrode facing the direction of the first pair of cells
  • the first lower substrate is provided with a first lower electrode facing the direction of the first pair of cells
  • the second liquid crystal lens layer includes The second upper substrate, the second lower substrate, and a second liquid crystal lens disposed between the second upper substrate and the second lower substrate, the second upper substrate is provided with a direction toward the second pair of cells
  • the second upper electrode is provided with a second lower electrode on the second lower substrate facing the second pair of cells.
  • the invention proposes an LCD display device based on a liquid crystal lens matched with a display screen and a fingerprint sensor to realize fingerprint touch.
  • the solution of using a liquid crystal lens with a hole can improve the utilization rate of fingerprint reflected light and optimize the quality of fingerprint imaging.
  • a double-layer liquid crystal lens solution is adopted to reduce the area of the fingerprint reader to reduce costs.
  • the liquid crystal lens adopts time-sharing drive, and it does not exist in the form of a lens during normal display. It only forms the form of a lens during fingerprint recognition to reduce power consumption and reduce the influence of the liquid crystal lens on the display.
  • FIG. 1 is a schematic diagram of the structure of a display device provided by Embodiment 1 of the present invention.
  • FIG. 2 is a schematic diagram of the structure of the display device provided in the second embodiment of the present invention.
  • FIG. 3 is a schematic diagram of the structure of an OLED display device provided by the third embodiment of the present invention.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the present application, “multiple” means two or more than two, unless otherwise specifically defined.
  • connection should be understood in a broad sense, unless otherwise clearly specified and limited.
  • it can be a fixed connection or a detachable connection.
  • Connected or integrally connected it can be mechanically connected, or electrically connected or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction of two components relationship.
  • connection should be understood according to specific circumstances.
  • the "on" or “under” of the first feature of the second feature may include direct contact between the first and second features, or may include the first and second features Not in direct contact but through other features between them.
  • the "above”, “above” and “above” of the first feature on the second feature include the first feature directly above and obliquely above the second feature, or it simply means that the first feature is higher in level than the second feature.
  • the “below”, “below” and “below” of the second feature of the first feature include the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.
  • the present invention is aimed at the prior art display device, during fingerprint recognition under the screen, it is easy to produce serious signal noise, which affects the collection of fingerprint recognition sensor signals.
  • recognition accuracy of the sensor is not high enough, it is even impossible to realize the fingerprint recognition under the screen.
  • the lens since the refractive index of the glue and the lens are relatively close, the effect of the lens will be greatly weakened or even lose the lens function, and this embodiment can solve this defect.
  • an embodiment of the present invention provides an LCD display device 10.
  • the LCD display device 10 includes a backlight assembly 11 arranged at the bottom, a display assembly 12 arranged on the backlight assembly 11, and a display assembly 12 arranged on the display assembly.
  • the liquid crystal lens layer 13 above 12, and the cover glass 14 are pasted on the liquid crystal lens layer 13 by laminating glue 15;
  • the display assembly 12 further includes a fingerprint identification unit, and the fingerprint identification unit includes a fingerprint recognizer 124;
  • the display assembly 12 further includes a bottom polarizer 121, a TFT substrate and TFT wiring 122, a liquid crystal layer 123, a color filter 125 and a top polarizer 126;
  • the liquid crystal lens layer 13 is in a lens state when the fingerprint identification unit is working, and the liquid crystal lens layer 13 is in a non-lens state when the fingerprint identification unit is not working.
  • FIG. 1 it is a schematic structural diagram of an LCD display device 10 provided in the first embodiment of the present invention.
  • the bottom of the LCD display device 10 is a backlight assembly 11, and a bottom polarizer 121 is arranged above the backlight assembly 11.
  • a TFT layer and TFT wiring 122 are fabricated on the bottom polarizer 121, and then placed on the bottom polarizer 121.
  • a liquid crystal layer 123 is fabricated on the TFT layer and the TFT traces 122, a color filter 125 is arranged above the liquid crystal layer 123, a fingerprint recognition sensor 124 is arranged below the color filter 125, and a top polarizer 126 It is arranged above the color filter 125.
  • the bottom polarizer 121, the TFT layer and the TFT wiring 122, the liquid crystal layer 123, the color filter 125, the fingerprint recognition sensor 124, and the top polarizer 126 constitute the display assembly 12,
  • a liquid crystal lens layer 13 is provided above the display assembly 12, and the cover glass 14 is bonded on the liquid crystal lens layer 13 by a bonding glue 15.
  • the liquid crystal lens layer 13 includes an upper substrate, a lower substrate, and a liquid crystal lens between the upper and lower substrates used for aligning the cell, the upper substrate is provided with an upper electrode facing the cell aligning direction, and the lower substrate is provided with a lower electrode facing the cell aligning direction;
  • the liquid crystal lens forms a lens array under the action of the upper and lower electrodes.
  • the LCD display device 10 uses the liquid crystal lens layer 13 to collect the reflected light 16 of the fingerprint of the finger, and concentrates the reflected light 16 on the liquid crystal lens layer 13 On the fingerprint recognition sensor 124, the fingerprint recognition sensor 124 then converts different light signals into electrical signals to realize fingerprint recognition.
  • the liquid crystal lens layer 13 can be powered to form a lens array only when under-screen fingerprint recognition is used, and in other cases, it is in a non-lens state, so as to reduce the influence of the lens on the display of the LCD display panel 10.
  • the product of the difference between the long axis and the short axis of the liquid crystal molecules in the liquid crystal lens layer 13 and the distance between the liquid crystal molecules is between 20 and 50.
  • FIG. 2 it is a schematic structural diagram of another LCD display device 10 provided by the second embodiment of the present invention.
  • a black mask layer 127 is provided above the color filter 125 in the display 12.
  • the lens array of the liquid crystal lens layer 13 forms a hole array corresponding to the black mask layer 127, and uses lens to condense light and small holes for imaging, which maximizes the utilization of reflected light from the finger and increases the recognizability of fingerprint touch.
  • the black mask layer 127 is a black matrix or black metal, such as metallic aluminum and molybdenum oxide.
  • the black mask layer 127 is disposed on the color filter glass 125, preferably on the upper surface of the color filter glass 125, and the vertical stacking position is aligned with the original black matrix or gate, source and drain metal.
  • the lines are the same, or occupy part of the open area.
  • FIG. 3 it is a schematic structural diagram of an OLED display device 30 provided in the third embodiment of the present invention.
  • the third embodiment is an OLED display device 30.
  • the OLED display panel 30 includes a substrate and traces 31 provided at the bottom.
  • a fingerprint recognition unit 32 is provided above the substrate and traces 31.
  • a double-layer liquid crystal lens layer 34 is arranged above the fingerprint identification unit 32, an OLED display screen 35 is arranged above the double-layer liquid crystal lens layer 34, and a cover glass 36 is arranged above the OLED display screen 35.
  • the fingerprint recognition unit in the OLED display includes a fingerprint recognizer
  • the double-layer liquid crystal lens layer 34 is in a lens state when the fingerprint recognition unit is in operation, and the double-layer liquid crystal lens layer 34 is in a non-lens state when the fingerprint recognition unit is not in operation.
  • the double-layer liquid crystal lens layer 34 includes a first liquid crystal lens layer and a second liquid crystal lens layer, and the first liquid crystal lens layer is electrically connected to the second liquid crystal lens layer;
  • the first liquid crystal lens layer includes an upper substrate, a lower substrate and a liquid crystal lens between the upper and lower substrates for aligning the cell, the upper substrate is provided with an upper electrode facing the cell aligning direction, and the lower substrate is provided with a lower electrode facing the cell aligning direction
  • the second liquid crystal lens layer includes an upper substrate, a lower substrate and a liquid crystal lens between the upper and lower substrates for the cell, the upper substrate is provided with an upper electrode facing the cell direction, and the lower substrate is provided with a lower electrode facing the cell direction;
  • the two-layer liquid crystal lens layer 34 forms a liquid crystal lens array under the action of the upper and lower electrodes, and the light passing through the first liquid crystal lens layer generates a focus between the first liquid crystal lens layer and the second liquid crystal lens layer, After the light passes through the focal point, the light enters the second liquid crystal lens layer.
  • the two liquid crystal lens layers 34 form a dual lens and are placed on the lower surface of the OLED display screen 35.
  • the dual liquid crystal lens can reduce the receiving area of the fingerprint identification unit 32 and reduce the cost of the fingerprint module.
  • the reflected light 37 of the fingerprint of the finger is condensed at one point through the first layer of liquid crystal lens, and a focal point is formed on the double layer of liquid crystal lens layer 34, and the reflected light 37 reaches the second layer of liquid crystal lens through the focal point.
  • the reflected light 37 of the fingerprint of the finger After being refracted by the second layer of liquid crystal lens, the reflected light 37 of the fingerprint of the finger reaches the fingerprint identification unit 32, and the fingerprint identification unit 32 converts different optical signals into electrical signals to realize fingerprint identification.
  • the surface closest to the fingerprint identification unit 32 is preferentially coated with a passband reflection film 33, which can filter out unnecessary bands and reduce the fingerprint identification unit 32.
  • the signal-to-noise ratio For example, when the fingerprint recognition sensor receives a wavelength of 480 to 590 nm, the band-pass band reflective film 33 can filter out wavelength signals >590 nm.
  • the liquid crystal lenses mentioned in the first to third embodiments include all liquid crystal lenses, including but not limited to liquid crystal lenses based on nematic liquid crystals and liquid crystal lenses based on blue phase liquid crystals.
  • the liquid crystal molecules are biaxial crystals, with different refractive indices in the long axis and short axis directions.
  • the center voltage is gradually higher than the edge voltage, and the ⁇ n on both sides is gradually larger than the center ⁇ n, so that the spatial distribution of refractive index forms a lens-like phase profile, which is independent of polarization and can be adjusted by adjusting the voltage. lens.
  • the liquid crystal lens of nematic liquid crystal has the advantage of lower driving voltage
  • the liquid crystal lens of blue phase liquid crystal has the advantage of fast response time
  • the present invention proposes a display panel based on a liquid crystal lens with a display screen and a fingerprint sensor to realize fingerprint touch.
  • the solution of using a liquid crystal lens with a hole can improve the utilization rate of fingerprint reflected light and optimize the imaging quality.
  • the liquid crystal lens is light and thin, the module structure is relatively simple, and it is easy to mass produce; the liquid crystal lens does not need a polarizer, and the light transmittance is greater than 90%; the focal length of the liquid crystal lens can be adjusted, which can improve the debugging accuracy of fingerprint recognition; the shape of the liquid crystal lens Adjustable, it can be switched between non-lens state and lens state to reduce the impact on the display; the liquid crystal lens relies on the change of the refractive index of the liquid crystal to achieve the lens condensing function, and there is no requirement for the refractive index of the upper and lower surface refractive index materials of the liquid crystal lens.
  • the liquid crystal lens lens array forms a hole array corresponding to the black mask layer, and uses the lens to condense light and small holes for imaging, which maximizes the utilization of reflected light from fingers and increases fingerprints Recognizability of touch.

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Abstract

一种LCD显示装置（10）与OLED显示装置（30），LCD显示装置（10）包括衬底基板、显示组件（12）、液晶透镜层（13），显示组件（12）包括指纹识别器（124）；OLED显示装置（30）包括衬底基板、指纹识别器（32）、双层液晶透镜层（34）、OLED显示屏（35）；液晶透镜层（13，34）用于在非透镜状态和透镜状态之间切换，采用液晶透镜搭配孔洞的方案可以提高指纹反射光的利用率，优化指纹成像质量。

Description

LCD显示装置、OLED显示装置 技术领域
本发明涉及显示技术领域，尤其涉及一种LCD显示装置与OLED显示装置。
 背景技术
随着技术的不断发展，全面屏移动终端已经成为一种发展趋势。而随着指纹识别技术的发展，其广泛地应用于手机、平板电脑、电视、门禁、以及保险柜等设备中。指纹识别技术主要有光学式、电容式、以及超声波式，其中，光学式指纹识别技术的识别范围更广、且成本较低。在全面屏移动终端中屏下指纹识别技术已成为各大品牌手机的旗舰机的标准配置。但目前尚无基于LCD的屏下指纹识别方案。
基于LCD 屏下指纹识别技术现有主流方案有：孔成像、透镜或透镜阵列成像等方案，但均各有缺点。
比如孔成像的屏下指纹识别是在彩色滤光片侧设置孔洞，利用小孔成像的原理实现屏下指纹识别。但指纹覆盖像素开口区域时，也会有光反射，且开口区透过光强远大于孔洞处透过的光强，形成严重的信噪，影响指纹识别传感器信号的采集，当传感器识别精度不够高时甚至无法实现屏下指纹识别。
而微小透镜体积大、质量重、形状单一、易碎，而且存在模组设计困难、批量生产不易实现、生产效率低、成本高等问题。另外为了保护面板或者为了给透镜一定的物距，则需要贴合盖板玻璃。因为通常情况下，贴合胶（例如OCA）和透镜的折射率是比较接近的，这样会使透镜的效果大幅减弱甚至失去透镜作用。且微小透镜是以固化的透镜形态存在，则实现屏下指纹识别的同时也会影响正常显示。
 技术问题
本发明提供一种LCD显示装置与OLED显示装置，可用于LCD 与OLED屏下指纹识别的设计方案，可提高光的利用率，降低背景信号比例，提高屏下指纹识别精度。利用液晶透镜层替代普通微小透镜，改善普通微小透镜模组设计困难，不利于组装的问题。改善微小透镜因为以固化的形态存在，而影响显示屏正常显示。
 技术解决方案
为解决上述问题，本发明提供的技术方案如下：
本发明实施例提供一种LCD显示装置，所述LCD显示装置包括设置在底部的背光组件、设置在所述背光组件上的显示组件、设置在所述显示组件上方的液晶透镜层；
其中，在所述显示组件内还包括指纹识别单元；
其中，所述液晶透镜层在所述指纹识别单元工作时处于透镜状态，所述液晶透镜层在所述指纹识别单元非工作时处于非透镜状态；
所述液晶透镜层包括基于向列相液晶的液晶透镜和基于蓝相液晶的液晶透镜；所述液晶透镜层中液晶分子的长轴与短轴之间的差值与所述液晶分子之间的距离值的乘积为20到50之间。
根据本发明实施例所提供的LCD显示装置，所述显示组件包括底部偏光片，设置在所述底部偏光片一侧的TFT层，在所述TFT层远离所述底部偏光片的一侧设置有液晶层，在所述液晶层远离所述TFT层的一侧设置有彩色滤光片，所述指纹识别单元设置在所述彩色滤光片靠近所述液晶层的一侧，在所述彩色滤光片的另一侧设置有顶部偏光片；
其中，所述指纹识别单元还包括指纹识别器；
其中，所述液晶透镜层设置在所述顶部偏光片远离所述彩色滤光片的一侧；
所述LCD显示装置还包括盖板，所述盖板贴合在所述液晶透镜层上方。
根据本发明实施例所提供的LCD显示装置，所述液晶透镜层包括用于对盒的上基板、下基板以及设置于所述上基板和所述下基板之间的液晶透镜，所述上基板朝向对盒方向设置有上电极，所述下基板朝向所述对盒方向设置有下电极；所述液晶透镜在所述上电极和所述下电极的作用下形成透镜阵列。
根据本发明实施例所提供的LCD显示装置，在所述显示组件的所述彩色滤光片远离所述液晶层的一侧设置黑色掩膜层，所述液晶透镜层的透镜阵列对应所述黑色掩膜层形成孔洞阵列；
其中，所述黑色掩膜层占有部分开口区面积。
根据本发明实施例所提供的LCD显示装置，所述黑色掩膜层是黑色矩阵或者是黑金属。
本发明实施例还提供一种LCD显示装置，所述LCD显示装置包括设置在底部的背光组件、设置在所述背光组件上的显示组件、设置在所述显示组件上方的液晶透镜层；
其中，在所述显示组件内还包括指纹识别单元；
其中，所述液晶透镜层在所述指纹识别单元工作时处于透镜状态，所述液晶透镜层在所述指纹识别单元非工作时处于非透镜状态。
根据本发明实施例所提供的LCD显示装置，所述液晶透镜层包括基于向列相液晶的液晶透镜和基于蓝相液晶的液晶透镜。
根据本发明实施例所提供的LCD显示装置，所述显示组件包括底部偏光片，设置在所述底部偏光片一侧的TFT层，在所述TFT层远离所述底部偏光片的一侧设置有液晶层，在所述液晶层远离所述TFT层的一侧设置有彩色滤光片，所述指纹识别单元设置在所述彩色滤光片靠近所述液晶层的一侧，在所述彩色滤光片的另一侧设置有顶部偏光片；
其中，所述指纹识别单元还包括指纹识别器；
其中，所述液晶透镜层设置在所述顶部偏光片远离所述彩色滤光片的一侧；
所述LCD显示装置还包括盖板，所述盖板贴合在所述液晶透镜层上方。
根据本发明实施例所提供的LCD显示装置，所述液晶透镜层包括用于对盒的上基板、下基板以及设置于所述上基板和所述下基板之间的液晶透镜，所述上基板朝向对盒方向设置有上电极，所述下基板朝向所述对盒方向设置有下电极；所述液晶透镜在所述上电极和所述下电极的作用下形成透镜阵列。
根据本发明实施例所提供的LCD显示装置，所述液晶透镜层中液晶分子的长轴与短轴之间的差值与所述液晶分子之间的距离值的乘积为20到50之间。
根据本发明实施例所提供的LCD显示装置，在所述显示组件的所述彩色滤光片远离所述液晶层的一侧设置黑色掩膜层，所述液晶透镜层的透镜阵列对应所述黑色掩膜层形成孔洞阵列；
其中，所述黑色掩膜层占有部分开口区面积。
根据本发明实施例所提供的LCD显示装置，所述黑色掩膜层是黑色矩阵或者是黑金属。
本发明实施例还提供一种OLED显示装置，所述OLED显示装置包括显示组件，设置在所述显示组件一侧的双层液晶透镜层，设置在所述双层液晶透镜层远离所述显示组件一侧的指纹识别单元，所述双层液晶透镜层朝向所述指纹识别单元的一侧设置有带通带反膜，OLED显示屏设置在所述双层液晶透镜层远离所述带通带反膜的一侧以及设置在所述OLED显示屏另一侧的盖板；
其中，所述指纹识别单元包括指纹识别器；
其中，所述双层液晶透镜层在所述指纹识别单元工作时处于透镜状态，所述双层液晶透镜层在所述指纹识别单元非工作时处于非透镜状态。
根据本发明实施例所提供的OLED显示装置，所述双层液晶透镜层包括基于向列相液晶的液晶透镜和基于蓝相液晶的液晶透镜。
根据本发明实施例所提供的OLED显示装置，所述双层液晶透镜层包括第一液晶透镜层和第二液晶透镜层，所述第一液晶透镜层与所述第二液晶透镜层电性连接；
其中，所述第一液晶透镜层包括用于对盒的第一上基板、第一下基板以及设置于所述第一上基板和所述第一下基板之间的第一液晶透镜，所述第一上基板朝向第一对盒方向设置有第一上电极，所述第一下基板朝向所述第一对盒方向设置有第一下电极；所述第二液晶透镜层包括用于对盒的第二上基板、第二下基板以及设置于所述第二上基板和所述第二下基板之间之间的第二液晶透镜，所述第二上基板朝向第二对盒方向设置有第二上电极，所述第二下基板朝向所述第二对盒方向设置有第二下电极。
 有益效果
本发明提出的一种基于液晶透镜搭配显示屏、指纹传感器实现指纹触摸的LCD显示装置，采用液晶透镜搭配孔洞的方案可以提高指纹反射光的利用率，优化指纹成像质量。而基于OLED显示装置，则是采用双层液晶透镜方案，减少指纹识别器的面积，来降低成本。液晶透镜采用了分时驱动，在平时显示时不以透镜的形态存在，仅仅在指纹识别时形成透镜的形态，以此来降低功耗，并减少液晶透镜对显示的影响。
 附图说明
为了更清楚地说明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单介绍，显而易见地，下面描述中的附图仅仅是发明的一些实施例，对于本领域普通技术人员来讲，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为本发明实施例一所提供的显示装置结构示意图。
图2为本发明实施例二所提供的显示装置结构示意图。
图3为本发明实施例三所提供的OLED显示装置结构示意图。
 本发明的实施方式
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。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接或可以相互通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
下文的公开提供了许多不同的实施方式或例子用来实现本申请的不同结构。为了简化本申请的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本申请。此外，本申请可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。此外，本申请提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
本发明针对现有技术的显示装置，在屏下指纹识别时，容易产生严重的信噪，影响指纹识别传感器信号的采集，当传感器识别精度不够高时甚至无法实现屏下指纹识别，以及在微小透镜中，因贴合胶和透镜的折射率是比较接近的，这样会使透镜的效果大幅减弱甚至失去透镜作用，而本实施例能够解决该缺陷。
如图1所示，本发明实施例提供一种LCD显示装置10，所述LCD显示装置10包括设置在底部的背光组件11，设置在所述背光组件11上的显示组件12，设置在显示组件12上方的液晶透镜层13，以及盖板玻璃14通过贴合胶15贴合在所述液晶透镜层13上方；
其中，在所述显示组件12内还包括指纹识别单元，所述指纹识别单元包括指纹识别器124；
其中，所述显示组件12还包括底部偏光片121、TFT基板及TFT走线122、液晶层123、彩色滤光片125和顶部偏光片126；
其中，所述液晶透镜层13在所述指纹识别单元工作时处于透镜状态，所述液晶透镜层13在所述指纹识别单元非工作时处于非透镜状态。
实施例一：
如图1所示，为本发明实施例一所提供的LCD显示装置10结构示意图。所述LCD显示装置10底部为背光组件11，在所述背光组件11的上方设置有一层底部偏光片121，在所述底部偏光片121上制作TFT层以及TFT的走线122，然后在所述TFT层以及TFT的走线122上制作液晶层123，在所述液晶层123上方设置有彩色滤光片125，在所述彩色滤光片125的下方设置有指纹识别传感器124，顶部偏光片126设置在所述彩色滤光片125的上方。
所述底部偏光片121、所述TFT层以及TFT的走线122、所述液晶层123、所述彩色滤光片125、所述指纹识别传感器124以及所述顶部偏光片126构成显示组件12，在所述显示组件12的上方设置有液晶透镜层13，盖板玻璃14通过贴合胶15贴合在所述液晶透镜层13上方。
所述液晶透镜层13包括用于对盒的上基板、下基板以及上下基板之间的液晶透镜，上基板朝向对盒方向设置有上电极，下基板朝向对盒方向设置有下电极；所述液晶透镜在上下电极的作用下形成透镜阵列。
在实施例一中，使用屏下指纹识别时，所述LCD显示装置10利用所述液晶透镜层13，收集手指指纹的反射光16，并通过液晶透镜层13将所述反射光16汇聚在所述指纹识别传感器124上，所述指纹识别传感器124再将不同的光信号转化成电信号，以此来实现指纹识别。在本实施例中，所述液晶透镜层13可以仅仅在使用屏下指纹识别时，加电形成透镜阵列，其他情况下为非透镜状态，来降低透镜对LCD显示面板10的显示影响。
在本实施例中，所述液晶透镜层13中液晶分子的长轴与短轴之间的差值与液晶分子之间的距离值的乘积为20到50之间。
实施例二；
如图2所示，为本发明实施例二所提供的另一LCD显示装置10结构示意图。在本实施例二中的LCD显示装置10相对于实施例一中的LCD显示装置10来说，在所述显示器12中的所述彩色滤光片125的上方设置了黑色掩膜层127。
其中，所述液晶透镜层13的透镜阵列对应所述黑色掩膜层127形成孔洞阵列，利用透镜聚光和小孔成像，最大化的提高手指反射光的利用率，增加指纹触摸的可识别性。所述黑色掩膜层127是黑色矩阵或者是黑金属，如金属铝和氧化钼等。
所述黑色掩膜层127设置在所述彩色滤光片玻璃125上，优先在所述彩色滤光片玻璃125的上表面，纵向堆叠位置与原有黑色矩阵或者栅极、源漏极金属走线相同，或占有部分开口区面积。
实施例三：
如图3所示，为本发明实施例三所提供的OLED显示装置30结构示意图。本实施例三是一种OLED显示装置30，所述OLED显示面板30包括设置在底部的基底及其走线31，在所述基底及其走线31上方设有指纹识别单元32，在所述指纹识别单元32的上方设置有双层液晶透镜层34，在所述双层液晶透镜层34的上方设置OLED显示屏35，盖板玻璃36设置在所述OLED显示屏35的上方。
其中，在所述OLED显示器的所述指纹识别单元包括指纹识别器；
其中，所述双层液晶透镜层34在所述指纹识别单元工作时处于透镜状态，所述双层液晶透镜层34在所述指纹识别单元非工作时处于非透镜状态。所述双层液晶透镜层34包括第一液晶透镜层和第二液晶透镜层，所述第一液晶透镜层与所述第二液晶透镜层电性连接；
其中，所述第一液晶透镜层包括用于对盒的上基板、下基板以及上下基板之间的液晶透镜，上基板朝向对盒方向设置有上电极，下基板朝向对盒方向设置有下电极；所述第二液晶透镜层包括用于对盒的上基板、下基板以及上下基板之间的液晶透镜，上基板朝向对盒方向设置有上电极，下基板朝向对盒方向设置有下电极；
所述双层液晶透镜层34在上下电极的作用下形成液晶透镜阵列，光线经过所述第一液晶透镜层在所述第一液晶透镜层与所述第二液晶透镜层之间产生一个焦点，光线经过该焦点后，光线射入所述第二液晶透镜层。
两块液晶透镜层34形成双镜头，放置于OLED显示屏35的下表面，双液晶透镜可减少指纹识别单元32的接收面积，降低指纹模组成本。在屏下指纹识别时，手指指纹的反射光37通过第一层液晶透镜汇聚在一点，在所述双层液晶透镜层34形成一个焦点，透过焦点，反射光37到达第二层液晶透镜，经第二层液晶透镜的折射，手指指纹的反射光37到达指纹识别单元32上，所述指纹识别单元32再将不同的光信号转化成电信号，以此来实现指纹识别。
其中，在双层液晶透镜层34的任意一表面，优先最靠近所述指纹识别单元32的面，镀上带通带反膜33，可以过滤掉不需要的波段，减少所述指纹识别单元32的信噪比。例如当所述指纹识别传感器接收波长为480~590nm，所述带通带反膜33可过滤掉>590nm的波长信号。
在本实施一到三中所提到的液晶透镜包含所有的液晶透镜，包括但不限于基于向列相液晶的液晶透镜和基于蓝相液晶的液晶透镜。在本实施中的液晶分子是双轴晶，长轴、短轴方向折射率不一样，定义△n=n长轴-n短轴，通过像素电极的设计，使得液晶透镜层的中心和边缘产生不均匀的电场，中心电压逐步高于于边缘电压，则两边△n逐步大于中心△n，这样折射率的空间分布形成类似透镜的相位棱廓，产生偏光无关，且可通过调压调制焦距的透镜。
其中，向列相液晶的液晶透镜的优点是驱动电压较低，蓝相液晶的液晶透镜的优点是响应时间快。
本发明提出的一种基于液晶透镜搭配显示屏、指纹传感器实现指纹触摸的显示面板，采用液晶透镜搭配孔洞的方案可以提高指纹反射光的利用率，优化成像质量。而液晶透镜轻薄，模组结构相对简单，容易批量生产；液晶透镜不需要偏光片，且光线的透过率大于90%；液晶透镜的焦距可以调控，可以提高指纹识别的调试精度；液晶透镜形态可调，可在非透镜状态和透镜状态之间切换，减少对显示的影响；液晶透镜依靠液晶折射率变化实现透镜聚光作用，对于液晶透镜上、下表面折射率材料折射率无要求，因此技术贴合了盖板玻璃后透镜效果也不受影响；液晶透镜透镜阵列对应黑色掩膜层形成孔洞阵列，利用透镜聚光和小孔成像，最大化的提高手指反射光的利用率，增加指纹触摸的可识别性。
以上对本申请实施例所提供的一种LCD显示装置与OLED显示装置进行了详细介绍，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。

Claims (15)

  1. 一种LCD显示装置，所述LCD显示装置包括设置在底部的背光组件、设置在所述背光组件上的显示组件、设置在所述显示组件上方的液晶透镜层；
    其中，在所述显示组件内还包括指纹识别单元；
    其中，所述液晶透镜层在所述指纹识别单元工作时处于透镜状态，所述液晶透镜层在所述指纹识别单元非工作时处于非透镜状态；
    所述液晶透镜层包括基于向列相液晶的液晶透镜和基于蓝相液晶的液晶透镜；所述液晶透镜层中液晶分子的长轴与短轴之间的差值与所述液晶分子之间的距离值的乘积为20到50之间。
  2. 根据权利要求1所述的LCD显示装置，其中所述显示组件包括底部偏光片，设置在所述底部偏光片一侧的TFT层，在所述TFT层远离所述底部偏光片的一侧设置有液晶层，在所述液晶层远离所述TFT层的一侧设置有彩色滤光片，所述指纹识别单元设置在所述彩色滤光片靠近所述液晶层的一侧，在所述彩色滤光片的另一侧设置有顶部偏光片；
    其中，所述指纹识别单元还包括指纹识别器；
    其中，所述液晶透镜层设置在所述顶部偏光片远离所述彩色滤光片的一侧；
    所述LCD显示装置还包括盖板，所述盖板贴合在所述液晶透镜层上方。
  3. 根据权利要求1所述的LCD显示装置，其中所述液晶透镜层包括用于对盒的上基板、下基板以及设置于所述上基板和所述下基板之间的液晶透镜，所述上基板朝向对盒方向设置有上电极，所述下基板朝向所述对盒方向设置有下电极；所述液晶透镜在所述上电极和所述下电极的作用下形成透镜阵列。
  4. 根据权利要求2所述的LCD显示装置，其中在所述显示组件的所述彩色滤光片远离所述液晶层的一侧设置黑色掩膜层，所述液晶透镜层的透镜阵列对应所述黑色掩膜层形成孔洞阵列；
    其中，所述黑色掩膜层占有部分开口区面积。
  5. 根据权利要求4所述的LCD显示装置，其中所述黑色掩膜层是黑色矩阵或者是黑金属。
  6. 一种LCD显示装置，所述LCD显示装置包括设置在底部的背光组件、设置在所述背光组件上的显示组件、设置在所述显示组件上方的液晶透镜层；
    其中，在所述显示组件内还包括指纹识别单元；
    其中，所述液晶透镜层在所述指纹识别单元工作时处于透镜状态，所述液晶透镜层在所述指纹识别单元非工作时处于非透镜状态。
  7. 根据权利要求6所述的LCD显示装置，其中所述液晶透镜层包括基于向列相液晶的液晶透镜和基于蓝相液晶的液晶透镜。
  8. 根据权利要求6所述的LCD显示装置，其中所述显示组件包括底部偏光片，设置在所述底部偏光片一侧的TFT层，在所述TFT层远离所述底部偏光片的一侧设置有液晶层，在所述液晶层远离所述TFT层的一侧设置有彩色滤光片，所述指纹识别单元设置在所述彩色滤光片靠近所述液晶层的一侧，在所述彩色滤光片的另一侧设置有顶部偏光片；
    其中，所述指纹识别单元还包括指纹识别器；
    其中，所述液晶透镜层设置在所述顶部偏光片远离所述彩色滤光片的一侧；
    所述LCD显示装置还包括盖板，所述盖板贴合在所述液晶透镜层上方。
  9. 根据权利要求6所述的LCD显示装置，其中所述液晶透镜层包括用于对盒的上基板、下基板以及设置于所述上基板和所述下基板之间的液晶透镜，所述上基板朝向对盒方向设置有上电极，所述下基板朝向所述对盒方向设置有下电极；所述液晶透镜在所述上电极和所述下电极的作用下形成透镜阵列。
  10. 根据权利要求6所述的LCD显示装置，其中所述液晶透镜层中液晶分子的长轴与短轴之间的差值与所述液晶分子之间的距离值的乘积为20到50之间。
  11. 根据权利要求9所述的LCD显示装置，其中在所述显示组件的所述彩色滤光片远离所述液晶层的一侧设置黑色掩膜层，所述液晶透镜层的透镜阵列对应所述黑色掩膜层形成孔洞阵列；
    其中，所述黑色掩膜层占有部分开口区面积。
  12. 根据权利要求11所述的LCD显示装置，其中所述黑色掩膜层是黑色矩阵或者是黑金属。
  13. 一种OLED显示装置，所述OLED显示装置包括显示组件，设置在所述显示组件一侧的双层液晶透镜层，设置在所述双层液晶透镜层远离所述显示组件一侧的指纹识别单元，所述双层液晶透镜层朝向所述指纹识别单元的一侧设置有带通带反膜，OLED显示屏设置在所述双层液晶透镜层远离所述带通带反膜的一侧以及设置在所述OLED显示屏另一侧的盖板；
    其中，所述指纹识别单元包括指纹识别器；
    其中，所述双层液晶透镜层在所述指纹识别单元工作时处于透镜状态，所述双层液晶透镜层在所述指纹识别单元非工作时处于非透镜状态。
  14. 根据权利要求13所述的OLED显示装置，其中所述双层液晶透镜层包括基于向列相液晶的液晶透镜和基于蓝相液晶的液晶透镜。
  15. 根据权利要求13所述的OLED显示装置，其中所述双层液晶透镜层包括第一液晶透镜层和第二液晶透镜层，所述第一液晶透镜层与所述第二液晶透镜层电性连接；
    其中，所述第一液晶透镜层包括用于对盒的第一上基板、第一下基板以及设置于所述第一上基板和所述第一下基板之间的第一液晶透镜，所述第一上基板朝向第一对盒方向设置有第一上电极，所述第一下基板朝向所述第一对盒方向设置有第一下电极；所述第二液晶透镜层包括用于对盒的第二上基板、第二下基板以及设置于所述第二上基板和所述第二下基板之间之间的第二液晶透镜，所述第二上基板朝向第二对盒方向设置有第二上电极，所述第二下基板朝向所述第二对盒方向设置有第二下电极。
PCT/CN2019/126524 2019-12-02 2019-12-19 Lcd显示装置、oled显示装置 WO2021109261A1 (zh)

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