WO2020223896A1 - 显示面板、显示装置和车载装置 - Google Patents
显示面板、显示装置和车载装置 Download PDFInfo
- Publication number
- WO2020223896A1 WO2020223896A1 PCT/CN2019/085828 CN2019085828W WO2020223896A1 WO 2020223896 A1 WO2020223896 A1 WO 2020223896A1 CN 2019085828 W CN2019085828 W CN 2019085828W WO 2020223896 A1 WO2020223896 A1 WO 2020223896A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- light
- liquid crystal
- substrate
- display panel
- Prior art date
Links
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 64
- 239000000758 substrate Substances 0.000 claims abstract description 51
- 230000005684 electric field Effects 0.000 claims abstract description 35
- 230000007613 environmental effect Effects 0.000 claims abstract description 20
- 238000001579 optical reflectometry Methods 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 229910020599 Co 3 O 4 Inorganic materials 0.000 claims description 3
- 229910019083 Mg-Ni Inorganic materials 0.000 claims description 3
- 229910019403 Mg—Ni Inorganic materials 0.000 claims description 3
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 3
- GNRSAWUEBMWBQH-UHFFFAOYSA-N nickel(II) oxide Inorganic materials [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 claims description 3
- 150000002500 ions Chemical class 0.000 description 21
- 238000010586 diagram Methods 0.000 description 16
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 239000005518 polymer electrolyte Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- ATTFYOXEMHAYAX-UHFFFAOYSA-N magnesium nickel Chemical compound [Mg].[Ni] ATTFYOXEMHAYAX-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
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Definitions
- the present disclosure relates to the field of display technology, and in particular to a display panel, a display device, and a vehicle-mounted device.
- the pixel electrode and the common electrode in the liquid crystal display device generate an electric field to drive the liquid crystal molecules in the liquid crystal layer to deflect. Therefore, light can pass through the liquid crystal layer, which is convenient for users to view corresponding information.
- the electric field between the pixel electrode and the common electrode disappears, and the liquid crystal molecules in the liquid crystal layer return to the initial state. At this time, light cannot pass through the liquid crystal layer.
- the inventor has noticed that when the liquid crystal display device is used as an in-vehicle device, due to the limited space in the vehicle, users usually expect the liquid crystal display device to have the function of a mirror without displaying.
- the liquid crystal display device when the liquid crystal display device is closed, the liquid crystal display device is in a black screen state, the reflectance of the liquid crystal display device is low, and the mirror reflection function cannot be provided.
- the present disclosure proposes a solution that can adjust the reflectance of the liquid crystal display device, so that the liquid crystal display device can have a specular reflection function when the liquid crystal display device is not performing display.
- a display panel including: a first substrate and a second substrate disposed opposite to each other, a liquid crystal layer is filled between the first substrate and the second substrate; pixel electrodes And a common electrode configured to generate an electric field for controlling the deflection of liquid crystal molecules in the liquid crystal layer; a light reflectance adjustment layer is provided on a side of the second substrate away from the liquid crystal layer, wherein the The light reflectance of the light reflectance adjusting layer is in an inverse relationship with the intensity of the environmental electric field.
- the light reflectance adjusting layer includes: an ion storage layer and an electrochromic layer disposed opposite to each other; and an ion conductive layer disposed between the ion storage layer and the electrochromic layer.
- the material of the electrochromic layer includes at least one of WO 3 , MoO 3 , TiO 2 , IrO 2 , NiO, Co 3 O 4 or Mg-Ni.
- the light reflectance adjustment layer further includes: a first transparent electrode disposed on a side of the ion storage layer away from the ion conductive layer; a second transparent electrode disposed on the electroconductive layer The side of the color changing layer away from the ion conductive layer.
- the display panel further includes: an electrical connection member configured to electrically connect the first transparent electrode and the pixel electrode; and the second transparent electrode is grounded.
- the pixel electrode is disposed on a side of the first substrate close to the liquid crystal layer; the common electrode is disposed on a side of the second substrate close to the liquid crystal layer.
- the pixel electrode and the common electrode are disposed on a side of the first substrate close to the liquid crystal layer.
- the display panel further includes: an insulating layer disposed between the first substrate and the liquid crystal layer; the pixel electrode is disposed on a side of the insulating layer close to the liquid crystal layer; The common electrode is arranged on a side of the insulating layer close to the first substrate.
- the display panel further includes: a first light-transmitting layer disposed between the second substrate and the light reflectivity adjustment layer; a second light-transmitting layer disposed on the first transparent layer The side of the optical layer close to the light reflectance adjustment layer, wherein the refractive index of the first light-transmitting layer is greater than the refractive index of the second substrate and less than the refractive index of the second light-transmitting layer, so The thickness of the first light-transmitting layer is an integer multiple of a quarter wavelength of the light incident on the first light-transmitting layer.
- the display panel further includes: a first polarizer arranged on a side of the first substrate away from the liquid crystal layer; a second polarizer arranged on a side of the light reflectance adjustment layer away from the liquid crystal layer.
- the light transmission axis direction of the first polarizer is perpendicular to the light transmission axis direction of the second polarizer.
- the display panel further includes: a color film layer, which is disposed on a side of the second polarizer close to the light reflectance adjustment layer.
- the initial orientation of the liquid crystal molecules in the liquid crystal layer is perpendicular to the direction of the light transmission axis of the first polarizer.
- a display device including the display panel as described in any of the above embodiments.
- a vehicle-mounted device including: the display device as described in any of the above embodiments, mounted on a movable bracket.
- the movable bracket is arranged between the center console position and the co-pilot position.
- FIG. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure
- FIG. 2 is a schematic diagram of the structure of a light reflectance adjusting layer according to an embodiment of the present disclosure
- Fig. 3 is a schematic structural diagram of a light reflectance adjusting layer according to another embodiment of the present disclosure.
- FIG. 4 is a schematic structural diagram of a display panel according to another embodiment of the present disclosure.
- FIG. 5 is a schematic diagram of an electric field generated in a display panel according to an embodiment of the present disclosure
- FIG. 6 is a schematic structural diagram of a display panel according to another embodiment of the present disclosure.
- FIG. 7 is a schematic structural diagram of a display panel according to another embodiment of the present disclosure.
- FIG. 8 is a schematic structural diagram of a display panel according to another embodiment of the present disclosure.
- Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure.
- the display panel includes a first substrate 11 and a second substrate 12 disposed oppositely, and a liquid crystal layer 2 is filled between the first substrate 11 and the second substrate 12.
- the pixel electrode 31 and the common electrode 32 are configured to generate an electric field for controlling the deflection of liquid crystal molecules in the liquid crystal layer 2.
- the light reflectance adjusting layer 5 is disposed on the side of the second substrate 12 away from the liquid crystal layer 2, and the light reflectance of the light reflectance adjusting layer 5 is in an inverse relationship with the intensity of the environmental electric field.
- the material of the pixel electrode 31 and the common electrode 32 includes ITO (Indium Tin Oxide) or other transparent conductive materials.
- a light reflectance adjustment layer 5 is provided on the side of the second substrate 12 away from the liquid crystal layer 2.
- the light reflectance of the light reflectance adjusting layer 5 has an inverse correlation with the intensity of the environmental electric field. In the case where the intensity of the environmental electric field is large, the reflectance of the light reflectance adjusting layer 5 is small, and the corresponding transmittance is large, so that light can pass through the display panel. However, when the intensity of the environmental electric field is small, the reflectance of the light reflectance adjusting layer 5 is relatively large, and the corresponding transmittance is relatively small, so that the display panel can provide a specular reflection function.
- Fig. 2 is a schematic structural diagram of a light reflectivity adjusting layer according to an embodiment of the present disclosure.
- the light reflectance adjusting layer includes an ion storage layer 51 and an electrochromic layer 52 that are disposed oppositely.
- the ion conductive layer 53 is provided between the ion storage layer 51 and the electrochromic layer 52.
- the ions for example, H + , Li + , Na + plasma
- the ion conductive layer 53 is a transmission channel for ions.
- the material of the ion conductive layer 53 may include an all-solid polymer electrolyte, a gel polymer electrolyte, or a composite polymer electrolyte.
- the material of the electrochromic layer 52 includes at least one of WO 3 , MoO 3 , TiO 2 , IrO 2 , NiO, Co 3 O 4 or magnesium-nickel alloy Mg-Ni.
- the ions will react with the reactive material in the electrochromic layer 52 to generate new compounds.
- the newly generated compound has higher transmittance and lower reflectance, so it is convenient for light to pass through the light reflectance adjusting layer.
- the compounds generated in the electrochromic layer 52 are decomposed into corresponding ions and reactive materials. Since the reflectivity of the reactive material itself is relatively high, the display panel can provide a specular reflection function.
- Fig. 3 is a schematic diagram of the structure of a light reflectivity adjusting layer according to another embodiment of the present disclosure. The difference between FIG. 3 and FIG. 2 is that in the embodiment shown in FIG. 3, the light reflectance adjustment layer further includes a first transparent electrode 54 and a second transparent electrode 55.
- the first transparent electrode 54 is disposed on the side of the ion storage layer 51 away from the ion conductive layer 53.
- the second transparent electrode 55 is disposed on the side of the electrochromic layer 52 away from the ion conductive layer.
- the material of the first transparent electrode 54 and the second transparent electrode 55 includes ITO or other transparent conductive materials.
- the environmental electric field of the light reflectance adjusting layer 5 is controlled by the pixel electrode 31 and the common electrode 32.
- the display panel further includes an insulating layer 4.
- the insulating layer 4 is provided between the first substrate 11 and the liquid crystal layer 2.
- the pixel electrode 31 is disposed on the side of the insulating layer 4 close to the liquid crystal layer 2, and the common electrode 32 is disposed on the side of the insulating layer 4 close to the first substrate 11.
- the pixel electrode 31 is a slit electrode
- the common electrode 32 is a planar electrode.
- FIG. 4 is a schematic structural diagram of a display panel according to another embodiment of the present disclosure. The difference between FIG. 4 and FIG. 1 is that, in the embodiment shown in FIG. 4, the display panel further includes a first polarizer 61 and a second polarizer 62.
- the first polarizer 61 is provided on the side of the first substrate 11 away from the liquid crystal layer 2.
- the second polarizer 62 is disposed on the side of the light reflectance adjustment layer 5 away from the second substrate 12.
- the light transmission axis direction of the first polarizer 61 and the light transmission axis direction of the second polarizer 62 are perpendicular to each other.
- the direction of the light transmission axis of the polarizer is the direction of the light vector that can pass through the polarizer.
- the initial orientation of the liquid crystal molecules in the liquid crystal layer 2 is perpendicular to the direction of the light transmission axis of the first polarizer 61. Therefore, when no voltage is applied to the pixel electrode 31 and the common electrode 32, light cannot pass through the liquid crystal layer, and the display panel cannot perform display. In addition, no electric field is formed between the pixel electrode 31 and the common electrode 32. In this case, the environmental electric field of the light reflectance adjustment layer 5 is small, which results in a large reflectance of the light reflectance adjustment layer 5. As a result, the display panel can provide a specular reflection function without displaying.
- FIG. 5 is a schematic diagram of an electric field generated in a display panel according to an embodiment of the present disclosure.
- FIG. 6 is a schematic structural diagram of a display panel according to another embodiment of the present disclosure. The difference between FIG. 6 and FIG. 4 is that, in the embodiment shown in FIG. 6, the display panel further includes an electrical connector 7.
- the electrical connector 7 is configured to electrically connect the pixel electrode 31 and the first transparent electrode 54 in the light reflectance adjustment layer 5.
- the second transparent electrode 55 in the light reflectance adjusting layer 5 is grounded.
- the environmental electric field of the light reflectance adjusting layer 5 consists of the pixel electrode 31 and the common electrode 32, and the first transparent electrode 54 and the second transparent electrode 54 in the light reflectance adjusting layer 5.
- the transparent electrodes 55 are controlled in common.
- the environmental electric field of the light reflectance adjustment layer 5 may also be controlled only by the first transparent electrode 54 and the second transparent electrode 55 in the light reflectance adjustment layer 5.
- FIG. 7 is a schematic structural diagram of a display panel according to another embodiment of the present disclosure.
- the difference between FIG. 7 and FIG. 6 is that, in the embodiment shown in FIG. 7, the pixel electrode 31 is arranged on the side of the first substrate 11 close to the liquid crystal layer 2, and the common electrode 32 is arranged on the second substrate 12 close to the liquid crystal layer.
- the pixel electrode 31 is arranged on the side of the first substrate 11 close to the liquid crystal layer 2
- the common electrode 32 is arranged on the second substrate 12 close to the liquid crystal layer.
- the electric field between the pixel electrode 31 and the common electrode 32 does not affect the light reflectance adjustment layer 5.
- the environmental electric field of the light reflectance adjustment layer 5 is controlled only by the first transparent electrode 54 and the second transparent electrode 55 in the light reflectance adjustment layer 5.
- the environmental electric field of the light reflectivity adjusting layer 5 is controlled by the pixel electrode 31 and the common electrode 32, and no other leads are required, so the frame of the display device can be reduced.
- the environmental electric field of the light reflectance adjustment layer 5 is jointly controlled by the pixel electrode 31 and the common electrode 32, and the first transparent electrode 54 and the second transparent electrode 55 in the light reflectance adjustment layer 5.
- the environmental electric field of the light reflectance adjustment layer 5 is jointly controlled by the first transparent electrode 54 and the second transparent electrode 55 in the light reflectance adjustment layer 5. Since the first transparent electrode 54 and the second transparent electrode 55 in the light reflectance adjusting layer 5 can provide a stronger electric field, a better control effect can be obtained.
- FIG. 8 is a schematic structural diagram of a display panel according to another embodiment of the present disclosure. The difference between FIG. 8 and FIG. 4 is that in the embodiment shown in FIG. 8, the display panel further includes a first light-transmitting layer 81 and a second light-transmitting layer 82.
- the first light-transmitting layer 81 is provided between the second substrate 12 and the light reflectance adjusting layer 5.
- the second light-transmitting layer 82 is disposed on the side of the first light-transmitting layer 81 close to the light reflectance adjusting layer 5.
- the refractive index of the first light-transmitting layer 81 is greater than the refractive index of the second substrate 12 and smaller than the refractive index of the second light-transmitting layer 82, and the thickness of the first light-transmitting layer 81 is equal to the light incident into the first light-transmitting layer 81 Integer multiples of a quarter wavelength.
- the light When light passes through the second substrate 12, the first light-transmitting layer 81, and the second light-transmitting layer 82 in sequence, the light generates reflected light n1 when it enters the first light-transmitting layer 81 from the second substrate 12, and the light When the first transmissive layer 81 enters the second transmissive layer 82, reflected light n2 is generated.
- the refractive index of the second substrate 12 is less than the refractive index of the first light-transmitting layer 81, and the refractive index of the first light-transmitting layer 81 is less than the refractive index of the second light-transmitting layer 82, if the reflected light n1 and n2 satisfy the interference
- a is a natural number
- d is the thickness of the first transparent layer 81
- ⁇ is the wavelength of light.
- a color film layer 9 is further included in the display panel.
- the color film layer 9 is arranged on the side of the second polarizer 62 close to the light reflectance adjustment layer 5.
- the display panel can display color images.
- the first light-transmitting layer 91 may also be provided between the second substrate 12 and the light reflectivity adjusting layer 5.
- a second light-transmitting layer 92 is provided on one side of the light reflectance adjusting layer 5 to enhance the intensity of transmitted light.
- a color film layer 9 can also be provided on the side of the second polarizer 62 close to the light reflectance adjustment layer 5, so that the display panel can display color images.
- the present disclosure also provides a display device.
- the display device includes a display panel related to any one of the embodiments in FIGS. 1 to 8.
- the display device can be any product or component with a display function, such as a display, a mobile phone, a tablet computer, a television, a notebook computer, a digital photo frame, a navigator, etc.
- the present disclosure also provides an in-vehicle device.
- the vehicle-mounted device includes the display device involved in any of the above embodiments.
- the display device is installed on a movable bracket.
- the movable bracket is disposed between the center console position and the co-pilot position. So that when the display device in the vehicle-mounted device provides the mirror reflection function, the user can make corresponding observations through the display device.
- the display device provided by the present disclosure has a light reflectivity of not less than 80% without displaying.
- the display device can effectively provide the user with a mirror reflection function.
- the environmental electric field of the light reflectance adjustment layer can be controlled by the pixel electrode and the common electrode used to control the deflection of liquid crystal molecules, and can be controlled by the first transparent electrode and the common electrode in the light reflectance adjustment layer.
- the second transparent electrode can also be controlled by the pixel electrode and the common electrode for controlling the deflection of liquid crystal molecules, and the first transparent electrode and the second transparent electrode in the light reflectance adjustment layer. The user can select the corresponding electric field control method according to the needs.
- the display panel provided by the foregoing embodiments of the present disclosure can be used in ADS (Advanced Super Dimension Switch) mode, IPS (In Plane Switching, plane switching) mode, TN (Twisted Nematic, twisted nematic) mode or VA (Vertical Alignment, vertical orientation) mode.
- ADS Advanced Super Dimension Switch
- IPS In Plane Switching, plane switching
- TN Transmission Nematic, twisted nematic
- VA Vertical Alignment, vertical orientation
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Abstract
Description
Claims (15)
- 一种显示面板,包括:相对设置的第一基板和第二基板,在所述第一基板和所述第二基板之间填充有液晶层;像素电极和公共电极,被配置为产生用于控制所述液晶层中的液晶分子发生偏转的电场;光反射率调节层,设置在所述第二基板的远离所述液晶层的一侧,其中所述光反射率调节层的光反射率与环境电场的强度成反相关关系。
- 根据权利要求1所述的显示面板,其中,所述光反射率调节层包括:相对设置的离子存储层和电致变色层;离子导电层,设置在所述离子存储层和电致变色层之间。
- 根据权利要求2所述的显示面板,其中,所述电致变色层的材料包括WO 3、MoO 3、TiO 2、IrO 2、NiO、Co 3O 4或Mg-Ni中的至少一种。
- 根据权利要求2所述的显示面板,其中,所述光反射率调节层还包括:第一透明电极,设置在所述离子存储层的远离所述离子导电层的一侧;第二透明电极,设置在所述电致变色层的远离所述离子导电层的一侧。
- 根据权利要求4所述的显示面板,还包括:电连接件,被配置为将所述第一透明电极与所述像素电极电连接;所述第二透明电极接地。
- 根据权利要求5所述的显示面板,其中,所述像素电极设置在所述第一基板的靠近所述液晶层的一侧;所述公共电极设置在所述第二基板的靠近所述液晶层的一侧。
- 根据权利要求1-5中任一项所述的显示面板,其中,所述像素电极和所述公共电极设置在所述第一基板的靠近所述液晶层的一侧。
- 根据权利要求7所述的显示面板,还包括:绝缘层,设置在所述第一基板和所述液晶层之间;所述像素电极设置在所述绝缘层的靠近所述液晶层的一侧;所述公共电极设置在所述绝缘层的靠近所述第一基板的一侧。
- 根据权利要求1所述的显示面板,还包括:第一透光层,设置在所述第二基板和所述光反射率调节层之间;第二透光层,设置在所述第一透光层的靠近所述光反射率调节层的一侧,其中所述第一透光层的折射率大于所述第二基板的折射率,且小于所述第二透光层的折射率,所述第一透光层的厚度为入射到所述第一透光层中的光线的四分之一波长的整数倍。
- 根据权利要求1所述的显示面板,还包括:第一偏振片,设置在所述第一基板的远离所述液晶层的一侧;第二偏振片,设置在所述光反射率调节层的远离所述第二基板的一侧,其中所述第一偏振片的光透过轴方向和所述第二偏振片的光透过轴方向垂直。
- 根据权利要求10所述的显示面板,还包括:彩膜层,设置在所述第二偏振片的靠近所述光反射率调节层的一侧。
- 根据权利要求10所述的显示面板,其中:所述液晶层中的液晶分子的初始取向与所述第一偏振片的光透过轴方向垂直。
- 一种显示装置,包括:如权利要求1-12中任一项所述的显示面板。
- 一种车载装置,包括:如权利要求13所述的显示装置,安装在可移动支架上。
- 根据权利要求14所述的车载装置,其中,所述可移动支架设置在中央控制台位置与副驾驶位置之间。
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CN201980000584.3A CN110268315A (zh) | 2019-05-07 | 2019-05-07 | 显示面板、显示装置和车载装置 |
PCT/CN2019/085828 WO2020223896A1 (zh) | 2019-05-07 | 2019-05-07 | 显示面板、显示装置和车载装置 |
US16/958,290 US11269213B2 (en) | 2019-05-07 | 2019-05-07 | Display panel, display device and in-vehicle device |
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CN103439846B (zh) * | 2013-08-23 | 2016-04-20 | 京东方科技集团股份有限公司 | 一种显示面板、显示装置 |
CN104834146B (zh) * | 2015-05-25 | 2018-05-01 | 京东方科技集团股份有限公司 | 一种显示器件、其制作方法、其驱动方法及显示装置 |
CN108490701B (zh) | 2018-03-13 | 2021-04-30 | 京东方科技集团股份有限公司 | 显示面板及其制造方法、显示装置 |
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2019
- 2019-05-07 WO PCT/CN2019/085828 patent/WO2020223896A1/zh active Application Filing
- 2019-05-07 CN CN201980000584.3A patent/CN110268315A/zh active Pending
- 2019-05-07 US US16/958,290 patent/US11269213B2/en active Active
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US20020003378A1 (en) * | 1998-12-16 | 2002-01-10 | Donnelly Corporation, A Corporation Of The State Of Michigan | Proximity sensing system for vehicles |
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US11269213B2 (en) | 2022-03-08 |
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