WO2020133811A1 - 一种显示装置 - Google Patents

一种显示装置 Download PDF

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Publication number
WO2020133811A1
WO2020133811A1 PCT/CN2019/082903 CN2019082903W WO2020133811A1 WO 2020133811 A1 WO2020133811 A1 WO 2020133811A1 CN 2019082903 W CN2019082903 W CN 2019082903W WO 2020133811 A1 WO2020133811 A1 WO 2020133811A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
substrate
crystal layer
display device
polymer dispersed
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PCT/CN2019/082903
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English (en)
French (fr)
Inventor
杨勇
查国伟
张鑫
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武汉华星光电技术有限公司
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Priority to US16/347,839 priority Critical patent/US10795226B2/en
Publication of WO2020133811A1 publication Critical patent/WO2020133811A1/zh

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Classifications

    • 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
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • 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
    • G02F1/1336—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
    • G02F1/137—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
    • G02F1/139—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 based on orientation effects in which the liquid crystal remains transparent
    • G02F1/1391—Bistable or multi-stable liquid crystal cells
    • 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
    • G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light

Definitions

  • the present invention relates to the field of display technology, and particularly to a display device.
  • LCD(Liquid Crystal Display (liquid crystal display) display technology is currently widely used in the market. Compared with traditional displays, it has many advantages such as light and thin, no radiation, no flicker, low energy consumption and so on.
  • Transflective display technology has been maturely applied in the market. It has reflective and transmissive dual-use display functions. It can save power consumption by displaying reflective display in bright environments, and can achieve normal in darker environments. Through LCD display.
  • the transflective display device needs to prepare double-cell thick liquid crystals in the manufacturing process, and the transmissive display part has a reduced transmittance and aperture ratio, which is not conducive to achieving high-brightness display. At the same time, this kind of display device cannot realize the preparation of high-resolution panels.
  • the purpose of the present invention is to overcome the defects in the prior art and provide a display device.
  • the present invention uses a liquid crystal (Polymer) based on the bistable polymer dispersed liquid crystal layer Dispersed Liquid Crystal (PDLC) dual-cell thick liquid crystal display device, according to the use environment, by adjusting the drive voltage of the display to achieve reflective display in bright environments, transmissive display in darker environments, transflective display At the same time increase the penetration rate of the panel.
  • PDLC bistable polymer dispersed liquid crystal layer Dispersed Liquid Crystal
  • a display device which includes a first substrate, a second substrate, a third substrate, and a fourth substrate.
  • the first substrate and the second substrate are oppositely arranged, and the third The substrate and the fourth substrate are oppositely arranged; wherein, a liquid crystal layer is provided between the first substrate and the second substrate; and a bistable polymer is provided between the third substrate and the fourth substrate A dispersed liquid crystal layer; a bandpass filter is provided between the liquid crystal layer and the bistable polymer dispersed liquid crystal layer; a backlight module is provided on the side of the fourth substrate away from the third substrate.
  • the first substrate is a color filter substrate with a built-in polarizer
  • the second substrate is provided with a first common electrode and a first indium tin oxide pixel electrode in sequence, the first common electrode and the first An indium tin oxide pixel electrode controls the rotation of the liquid crystal of the liquid crystal layer for light modulation
  • an insulating layer is further provided between the first common electrode and the first indium tin oxide pixel electrode.
  • the green pixel and the red pixel of the color film photoresist film layer use quantum dot color filter materials, when blue light is used to excite the light Realize high color gamut display.
  • band-pass filter selectively transmits blue light and simultaneously reflects red light and green light.
  • the third substrate is composed of a black matrix and a flat layer.
  • the mass fraction ratio of the liquid crystal in the bistable polymer dispersed liquid crystal layer is 40%-60%; the liquid crystal of the bistable polymer dispersed liquid crystal layer is the same as the liquid crystal material of the liquid crystal layer;
  • the third substrate is a color filter substrate provided with a second common electrode underneath
  • the fourth substrate is an array substrate provided with a second indium tin oxide pixel electrode on the second substrate
  • the common electrode and the second indium tin oxide pixel electrode can control the rotation of the liquid crystal of the bistable polymer dispersed liquid crystal layer to switch between a high fog scattering state and a transparent state.
  • the backlight module includes one of a blue backlight lamp board, a side-emitting backlight module or a Mini-LED backlight module.
  • liquid crystal layer and the bistable polymer dispersed liquid crystal layer are driven by the same IC of the same driving circuit, and the maximum driving voltage of the IC is greater than the larger of the two liquid crystal voltage thresholds.
  • the invention provides a display device which adopts a double-layer liquid crystal display, uses a low voltage drive in a bright environment to realize a reflective display, and drives the high voltage in a dark environment to disperse the bistable polymer liquid crystal layer
  • the transparent state is realized to achieve transparent display, and the change of the driving voltage of the liquid crystal layer of the bistable polymer dispersed liquid crystal layer is used to control the scattering and transmission of light, thereby controlling the change of the brightness of the screen, and the use of quantum dot color filters to achieve high color gamut display
  • the display device can realize transflective display and has a higher transmittance.
  • FIG. 1 is a schematic structural diagram of a display device in an embodiment of the invention.
  • FIG. 2 is a schematic structural diagram of a display device in another embodiment of the present invention.
  • FIG. 3 is a schematic diagram of driving a display device according to an embodiment of the invention.
  • FIG. 4 is a schematic diagram of driving a display device according to another embodiment of the invention.
  • first common electrode 22 first indium tin oxide pixel electrode
  • a display device which includes a first substrate 1, a second substrate 2, a third substrate 3, and a fourth substrate 4.
  • the substrate 1 and the second substrate 2 are oppositely arranged, and the third substrate 3 and the fourth substrate 4 are oppositely arranged; wherein, a liquid crystal layer 5 is provided between the first substrate 1 and the second substrate 2
  • a bistable polymer dispersed liquid crystal layer 6 is provided between the third substrate 3 and the fourth substrate 4; a band is provided between the liquid crystal layer 5 and the bistable polymer dispersed liquid crystal layer 6 Pass filter 7; the fourth substrate 4 is provided with a backlight module 8 on a side away from the third substrate 3.
  • the first substrate 1 is a color filter substrate with a built-in polarizer; the second substrate 2 is sequentially provided with a first common electrode 21 and a first indium tin oxide pixel electrode 22, and the first common electrode 21
  • the first indium tin oxide pixel electrode 22 controls the rotation of the liquid crystal of the liquid crystal layer 5 for light modulation; an insulating layer 23 is further provided between the first common electrode 21 and the first indium tin oxide pixel electrode 22.
  • ⁇ is preferably 550 nm.
  • the first substrate 1 is also provided with a color film photoresist film layer, and the green light pixels and red light pixels of the color film photoresist film layer use quantum dot color filters (QD Color Filter (QDCF) material, which realizes high color gamut display when blue light is used for excitation.
  • QDCF quantum dot color filters
  • the bistable polymer dispersed liquid crystal layer 6 selectively transmits blue light and simultaneously reflects red light and green light.
  • the bistable polymer-dispersed liquid crystal layer 6 can selectively transmit blue light and reflect red and green light at the same time, which has the effect of selectively transmitting blue light and reflecting red and green light.
  • the third substrate 3 is composed of a black matrix and a flat layer.
  • the mass fraction ratio of the liquid crystal in the bistable polymer dispersed liquid crystal layer 6 is 40%-60%; the liquid crystal of the bistable polymer dispersed liquid crystal layer 6 is the same as the liquid crystal material of the liquid crystal layer 5;
  • the third substrate 3 is a color filter substrate provided with a second common electrode 31 underneath
  • the fourth substrate 4 is an array substrate provided with a second indium tin oxide pixel electrode 41 thereon.
  • the two common electrodes 31 and the second indium tin oxide pixel electrode 41 can control the rotation of the liquid crystal of the bistable polymer dispersed liquid crystal layer 6 to switch between a high fog scattering state and a transparent state.
  • the backlight module 8 includes one of a blue backlight board, a side-emitting backlight module, or a Mini-LED backlight module.
  • the display device can realize the following display modes:
  • the bistable polymer dispersed liquid crystal layer 6 cannot rotate due to the high driving voltage.
  • the bistable polymer dispersed liquid crystal layer 6 exhibits a high fog scattering state, and the red and green light is reflected after the ambient light passes through the bandpass filter (as shown in the icon (Indicated by the arrow in), to achieve reflective display.
  • the light passing through the bistable polymer dispersed liquid crystal layer 6 is scattered, and the backlight 8 is turned off at this time, achieving energy saving and power saving effects.
  • the bistable polymer dispersed liquid crystal layer 6 in a darker environment, when the driving voltage is increased, the liquid crystal of the reflective liquid crystal layer rotates for light modulation, and the liquid crystal of the bistable polymer dispersed liquid crystal layer 6 can be driven at high voltage to achieve rotation and light modulation. At this time, the bistable polymer-dispersed liquid crystal layer 6 is in a transparent state, and the thickness of the liquid crystal cell of the double-layer liquid crystal is equivalent to that of the transmissive liquid crystal cell, so it has a high transmittance.
  • the backlight 8 is turned on, and the blue light is excited by the quantum dot color film after passing through the two liquid crystal layers to realize a high color gamut display (as indicated by the arrow in the icon), thereby achieving a transmissive display.
  • the liquid crystal can be switched between the high fog scattering state and the transparent state, and the brightness and darkness of the picture can be controlled.
  • the liquid crystal layer 5 and the bistable polymer dispersed liquid crystal layer 6 are driven by the same IC of the same driving circuit, and the maximum driving voltage of the IC is greater than the larger of the two liquid crystal voltage thresholds.
  • the driving voltage can be controlled. Since the driving voltage for adjusting the liquid crystal in the bistable polymer dispersed liquid crystal layer 6 needs to be more than 20V, and the driving voltage for the liquid crystal in the liquid crystal layer 5 only needs to be about 5V, the size of the driving voltage output by the IC is controlled.
  • the invention provides a display device which adopts a double-layer liquid crystal display, uses a low voltage drive in a bright environment to realize a reflective display, and drives the high voltage in a dark environment to disperse the bistable polymer liquid crystal layer
  • the transparent state is realized to achieve transparent display, and the change of the driving voltage of the liquid crystal layer of the bistable polymer dispersed liquid crystal layer is used to control the scattering and transmission of light, thereby controlling the change of the brightness of the screen, and the bistable polymer dispersed liquid crystal layer is used to achieve high color
  • the field display technology can realize transflective display, and at the same time has a higher transmissivity, overcoming the problem of lower transmissivity of the conventional transflective display.
  • the display device of the present invention can be applied to various occasions, can be combined with various devices and structures, and can be either a display panel or other devices with display functions, such as tablet computers, televisions, display windows, and the like. It should be understood that in order to realize the function, the display device of the present invention is provided with other devices, structures, etc., not shown in this specification.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Liquid Crystal (AREA)

Abstract

一种显示装置，包括第一基板（1）、第二基板（2）、第三基板（3）和第四基板（4），第一基板（1）和第二基板（2）相对设置，第三基板（3）和第四基板（4）相对设置；其中，第一基板（1）和第二基板（2）之间设置有液晶层（5）；第三基板（3）和第四基板（4）之间设置有双稳态高分子分散液晶层（6）；液晶层（5）和双稳态高分子分散液晶层（6）之间设有带通滤波片（7）；第四基板（4）远离第三基板（3）一侧设有背光模组（8）。通过采用双盒厚的反射式液晶显示，根据使用环境不同通过调整显示驱动电压在高亮环境中实现反射式显示，较暗环境中实现透过式液晶显示，克服传统半透半反显示器穿透率较低的问题。

Description

一种显示装置 技术领域
本发明涉及显示技术领域，尤其涉及一种显示装置。
 背景技术
LCD(Liquid Crystal Display, 液晶显示器)显示技术目前得到市场的广泛应用，相比于传统的显示器，其具有轻薄、无辐射、无闪烁、低耗能等诸多优势。半透半反显示技术已在市场上得到成熟应用，其具有反射式、透过式双用显示功能，在高亮环境中通过显示反射式显示节省功耗，在较暗环境中可以实现正常的透过式LCD显示。然而半透半反显示装置在制程工艺中需要制备双盒厚液晶，同时透过式显示部分其穿透率和开口率降低，不利于实现高亮显示。同时该种显示装置也无法实现高解析度面板制备。
 技术问题
本发明的目的是克服现有技术存在的缺陷，提供一种显示装置，本发明采用基于所述双稳态高分子分散液晶层的液晶（Polymer Dispersed Liquid Crystal, PDLC）的双盒厚液晶显示装置，根据使用环境不同，通过调节显示器的驱动电压实现在高亮环境中反射式显示，在较暗环境中透过式显示，在实现透反显示的同时提升面板的穿透率。
 技术解决方案
为了实现上述目的，本发明采用以下技术方案：
本发明的第一实施例中，提供一种显示装置，包括第一基板、第二基板、第三基板和第四基板，所述第一基板和所述第二基板相对设置，所述第三基板和所述第四基板相对设置；其中，所述第一基板和所述第二基板之间设置有液晶层；所述第三基板和所述第四基板之间设置有双稳态高分子分散液晶层；所述液晶层和所述双稳态高分子分散液晶层之间设有带通滤波片；所述第四基板远离所述第三基板一侧设有背光模组。
进一步的，其中所述第一基板为内置偏光片的彩色滤光片基板；所述第二基板上依次设置有第一公共电极和第一氧化铟锡像素电极，所述第一公共电极和第一氧化铟锡像素电极控制所述液晶层的液晶旋转进行光调制；所述第一公共电极和第一氧化铟锡像素电极之间还设有绝缘层。
进一步的，其中所述液晶层的液晶盒厚满足Δnd=λ/4，其中Δn为液晶的折射率各向异性，d为液晶盒厚，Δnd表示光程差，λ为波长，λ数值为380nm-780nm。
进一步的，其中所述第一基板上还设有彩膜光阻膜层，所述彩膜光阻膜层的绿光像素和红光像素采用量子点彩色滤光片材料，采用蓝光激发光时实现高色域显示。
进一步的，其中所述带通滤波片选择性透过蓝光同时反射红光和绿光。
进一步的，其中所述第三基板由黑色矩阵和平坦层构成。
进一步的，其中所述双稳态高分子分散液晶层中液晶的质量分数比例为40%-60%；所述双稳态高分子分散液晶层的液晶与所述液晶层的液晶材料相同；所述双稳态高分子分散液晶层的液晶盒厚满足Δnd=λ/4，其中Δn为液晶的折射率各向异性，d为液晶盒厚，Δnd表示光程差，λ为波长，λ数值为380nm-780nm。
进一步的，其中所述第三基板为其下设有第二公共电极的彩色滤光片基板，所述第四基板为其上设有第二氧化铟锡像素电极的阵列基板，所述第二公共电极和所述第二氧化铟锡像素电极能够控制所述双稳态高分子分散液晶层的液晶旋转使其在高雾散射态和透明态之间切换。
进一步的，其中所述背光模组包括蓝光背光灯板、侧发光背光模组或Mini-LED背光模组中的一种。
进一步的，其中所述液晶层与所述双稳态高分子分散液晶层采用同一驱动电路的同一IC进行驱动，该IC的驱动电压最大值大于两层液晶电压阈值中较大值。
 有益效果
本发明提供了一种显示装置，其采用双层液晶显示，在高亮环境中采用低电压驱动，实现反射式显示，在较暗环境中通过高电压驱动，使双稳态高分子分散液晶层呈现透明态实现透明显示，并通过双稳态高分子分散液晶层液晶驱动电压的变化控制光的散射与透过，从而控制画面的亮暗变化，利用量子点彩色滤光片实现高色域显示技术，相比于传统的半透半反显示装置，该显示装置可实现透反显示，同时具有较高的透过率。
 附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本发明的某些实施例，因此不应被看作是对范围的限定，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相关的附图。
图1是本发明一实施例中一种显示装置的结构示意图；
图2是本发明另一实施例中一种显示装置的结构示意图；
图3是本发明一实施例中一种显示装置驱动示意图；
图4是本发明另一实施例中一种显示装置驱动示意图。
图中部件标识如下：
1第一基板、2第二基板、3第三基板、4第四基板、5液晶层、
6双稳态高分子分散液晶层、7带通滤波片、8背光模组、
21第一公共电极、22第一氧化铟锡像素电极、
23绝缘层、31第二公共电极、41第二氧化铟锡像素电极。
 本发明的实施方式
下面将结合本发明实施例中的附图，对本发明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发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，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，都属于本发明保护的范围。
需要指出的是，在附图中，为了图示的清晰可能夸大了层和区域的尺寸。而且可以理解，当元件或层被称为在另一元件或层“上”时，它可以直接在其他元件上，或者可以存在中间的层。另外，可以理解，当元件或层被称为在另一元件或层“下”时，它可以直接在其他元件下，或者可以存在一个以上的中间的层或元件。另外，还可以理解，当层或元件被称为在两层或两个元件“之间”时，它可以为两层或两个元件之间唯一的层，或还可以存在一个以上的中间层或元件。通篇相似的参考标记指示相似的元件。
请参阅图1、图2所示，本发明的第一实施例中，提供一种显示装置，包括第一基板1、第二基板2、第三基板3和第四基板4，所述第一基板1和所述第二基板2相对设置，所述第三基板3和所述第四基板4相对设置；其中，所述第一基板1和所述第二基板2之间设置有液晶层5；所述第三基板3和所述第四基板4之间设置有双稳态高分子分散液晶层6；所述液晶层5和所述双稳态高分子分散液晶层6之间设有带通滤波片7；所述第四基板4远离所述第三基板3一侧设有背光模组8。
其中所述第一基板1为内置偏光片的彩色滤光片基板；所述第二基板2上依次设置有第一公共电极21和第一氧化铟锡像素电极22，所述第一公共电极21和第一氧化铟锡像素电极22控制所述液晶层5的液晶旋转进行光调制；所述第一公共电极21和第一氧化铟锡像素电极22之间还设有绝缘层23。
其中所述液晶层5的液晶盒厚满足Δnd=λ/4，其中Δn为液晶的折射率各向异性，d为液晶盒厚，Δnd表示光程差，λ为波长，λ数值为380nm-780nm，λ数值优选为550nm。
其中所述第一基板1上还设有彩膜光阻膜层，所述彩膜光阻膜层的绿光像素和红光像素采用量子点彩色滤光片(QD Color Filter，QDCF)材料，采用蓝光激发光时实现高色域显示。
其中所述双稳态高分子分散液晶层6选择性透过蓝光同时反射红光和绿光。所述双稳态高分子分散液晶层6可以选择性的透过蓝光，同时反射红绿光，起到很好选择性透蓝光和反射红绿光的效果。
其中所述第三基板3为由黑色矩阵和平坦层构成。
其中所述双稳态高分子分散液晶层6中液晶的质量分数比例为40%-60%；所述双稳态高分子分散液晶层6的液晶与所述液晶层5的液晶材料相同；所述双稳态高分子分散液晶层6的液晶盒厚满足Δnd=λ/4，其中Δn为液晶的折射率各向异性，d为液晶盒厚，Δnd表示光程差，λ为波长，λ数值为380nm-780nm，λ数值优选为550nm。
其中所述第三基板3为其下设有第二公共电极31的彩色滤光片基板，所述第四基板4为其上设有第二氧化铟锡像素电极41的阵列基板，所述第二公共电极31和所述第二氧化铟锡像素电极41能够控制所述双稳态高分子分散液晶层6的液晶旋转使其在高雾散射态和透明态之间切换。
其中所述背光模组8包括蓝光背光灯板、侧发光背光模组或Mini-LED背光模组中的一种。
该显示装置可实现如下显示模式：
请参阅图3所示，在高亮环境中，采用较低的电压进行驱动，液晶层5的液晶在较低驱动电压下可旋转进行光调制，显示模式为FFS模式，而双稳态高分子分散液晶层6的液晶由于驱动电压较高无法实现转动，此时双稳态高分子分散液晶层6呈现高雾散射态，环境光透过带通滤光片后红绿光被反射（如图标中的箭头所示），实现反射式显示。透过双稳态高分子分散液晶层6的光被散射，背光8此时为关闭状态，达到节能省电效果。
请参阅图4所示，在较暗环境中，增加驱动电压，反射液晶层液晶旋转进行光调制，双稳态高分子分散液晶层6的液晶在高电压下被驱动也可实现旋转和光调制，此时双稳态高分子分散液晶层6呈现透明态，双层液晶的液晶盒厚与透过式液晶盒厚相当，因此具有较高的透过率。此时背光8开启，蓝光通过两层液晶层后被量子点彩膜激发实现高色域显示（如图标中的箭头所示），从而实现透射式显示。调节双稳态高分子分散液晶层6中液晶的驱动电压，可以使液晶在高雾散射态和透明态之间相互转换，控制画面的亮暗变化。
值得注意的是，所述液晶层5与所述双稳态高分子分散液晶层6采用同一驱动电路的同一IC进行驱动，该IC的驱动电压最大值大于两层液晶电压阈值中较大值，可以控制驱动电压，由于调节双稳态高分子分散液晶层6中液晶的驱动电压需要20V以上，而所述液晶层5中液晶的驱动电压仅需要5V左右，所以控制IC输出的驱动电压的大小可以保证输出电压仅5V时，仅所述液晶层5液晶盒被驱动，实现反射式显示；输出电压为20V时，所述液晶层5与所述双稳态高分子分散液晶层6两个液晶盒同时被驱动，实现透射式显示。
本发明提供了一种显示装置，其采用双层液晶显示，在高亮环境中采用低电压驱动，实现反射式显示，在较暗环境中通过高电压驱动，使双稳态高分子分散液晶层呈现透明态实现透明显示，并通过双稳态高分子分散液晶层液晶驱动电压的变化控制光的散射与透过，从而控制画面的亮暗变化，利用双稳态高分子分散液晶层实现高色域显示技术，相比于传统的半透半反显示装置，该显示装置可实现透反显示，同时具有较高的透过率，克服传统半透半反显示器穿透率较低的问题。
本发明的显示装置可适用于各种场合，可与各种器件、结构相结合，既可以是显示面板，也可为带有显示功能的其他设备，例如平板电脑、电视机、显示橱窗等。应该理解，为了实现功能，本发明的显示装置带有在本说明书中未示出的其他器件、结构等。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (10)

  1. 一种显示装置，其中，包括：第一基板、第二基板、第三基板和第四基板，所述第一基板和所述第二基板相对设置，所述第三基板和所述第四基板相对设置；
    所述第一基板和所述第二基板之间设置有液晶层；
    所述第三基板和所述第四基板之间设置有双稳态高分子分散液晶层；
    所述液晶层和所述双稳态高分子分散液晶层之间设有带通滤波片；
    所述第四基板远离所述第三基板一侧设有背光模组。
  2. 据权利要求1所述的显示装置，其中，所述第一基板为内置偏光片的彩色滤光片基板；所述第二基板上依次设置有第一公共电极和第一氧化铟锡像素电极，所述第一公共电极和第一氧化铟锡像素电极控制所述液晶层的液晶旋转进行光调制；所述第一公共电极和第一氧化铟锡像素电极之间还设有绝缘层。
  3. 据权利要求1所述的显示装置，其中，所述液晶层的液晶盒厚满足Δnd=λ/4，其中Δn为液晶的折射率各向异性，d为液晶盒厚，Δnd表示光程差，λ为波长，λ数值为380nm-780nm。
  4. 据权利要求1所述的显示装置，其中，所述第一基板上还设有彩膜光阻膜层，所述彩膜光阻膜层的绿光像素和红光像素采用量子点彩色滤光片材料，采用蓝光激发光时实现高色域显示。
  5. 据权利要求1所述的显示装置，其中，所述带通滤波片选择性透过蓝光同时反射红光和绿光。
  6. 据权利要求1所述的显示装置，其中，所述第三基板由黑色矩阵和平坦层构成。
  7. 据权利要求1所述的显示装置，其中，所述双稳态高分子分散液晶层中液晶的质量分数比例为40%-60%；所述双稳态高分子分散液晶层的液晶与所述液晶层的液晶材料相同；所述双稳态高分子分散液晶层的液晶盒厚满足Δnd=λ/4，其中Δn为液晶的折射率各向异性，d为液晶盒厚，Δnd表示光程差，λ为波长，λ数值为380nm-780nm。
  8. 据权利要求1所述的显示装置，其中，所述第三基板为其下设有第二公共电极的彩色滤光片基板，所述第四基板为其上设有第二氧化铟锡像素电极的阵列基板，所述第二公共电极和所述第二氧化铟锡像素电极能够控制所述双稳态高分子分散液晶层的液晶旋转使其在高雾散射态和透明态之间切换。
  9. 据权利要求1所述的显示装置，其中，所述背光模组包括蓝光背光灯板、侧发光背光模组或Mini-LED背光模组中的一种。
  10. 据权利要求1所述的显示装置，其中，所述液晶层与所述双稳态高分子分散液晶层采用同一驱动电路的同一IC进行驱动，该IC的驱动电压最大值大于两层液晶电压阈值中较大值。
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