WO2023082343A1 - 液晶显示面板和车载液晶显示装置 - Google Patents

液晶显示面板和车载液晶显示装置 Download PDF

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Publication number
WO2023082343A1
WO2023082343A1 PCT/CN2021/133121 CN2021133121W WO2023082343A1 WO 2023082343 A1 WO2023082343 A1 WO 2023082343A1 CN 2021133121 W CN2021133121 W CN 2021133121W WO 2023082343 A1 WO2023082343 A1 WO 2023082343A1
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WIPO (PCT)
Prior art keywords
layer
substrate
liquid crystal
crystal display
area
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PCT/CN2021/133121
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English (en)
French (fr)
Inventor
徐丽
余洋
李松
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武汉华星光电技术有限公司
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Priority to EP21819315.9A priority Critical patent/EP4435505A1/en
Priority to US17/620,666 priority patent/US11947213B2/en
Priority to JP2021572054A priority patent/JP2024503150A/ja
Priority to KR1020227006907A priority patent/KR102643383B1/ko
Publication of WO2023082343A1 publication Critical patent/WO2023082343A1/zh

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    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/133345Insulating layers
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    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/21Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
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    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
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    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
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    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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    • G02F1/133509Filters, e.g. light shielding masks
    • GPHYSICS
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    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
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    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
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    • G02F1/133514Colour filters
    • GPHYSICS
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    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
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    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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    • GPHYSICS
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    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
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    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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    • GPHYSICS
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    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
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    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
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    • G02F1/1333Constructional arrangements; Manufacturing methods
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    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
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    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362Active matrix addressed cells
    • GPHYSICS
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    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
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    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
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    • G02F1/133502Antiglare, refractive index matching layers
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    • G02F2201/50Protective arrangements
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    • G02F2203/00Function characteristic
    • G02F2203/11Function characteristic involving infrared radiation

Definitions

  • the present application relates to the field of display technology, in particular to a liquid crystal display panel and a vehicle-mounted liquid crystal display device.
  • DMS Driver Monitor System, driver status monitoring system
  • active infrared sensors on the vehicle
  • mobile phone infrared light information so as to monitor the driver state.
  • the infrared camera will be placed under the liquid crystal display, and the normal operation of the infrared camera will be realized by digging holes in the liquid crystal display.
  • the current liquid crystal display with an infrared camera will remove the film layer in the color filter substrate and the array substrate by digging blind holes to improve the transmittance of infrared light.
  • the liquid crystal display screen has dug out multiple layers, resulting in a difference in the reflectivity of light in the area where the infrared camera is set and the light in the display area, and the brightness of the LCD screen will be poor, resulting in inability to Arrive in total blackness.
  • the existing liquid crystal display screen has the technical problem that a completely black display cannot be realized due to the difference in reflectivity of light in the infrared camera setting area compared with the display area.
  • the embodiment of the present application provides a liquid crystal display panel and a vehicle-mounted liquid crystal display device, which are used to alleviate the technology that the existing liquid crystal display cannot realize a completely black display caused by the difference in the reflectivity of light in the infrared camera setting area compared with the display area. question.
  • An embodiment of the present application provides a liquid crystal display panel, the liquid crystal display panel includes a display area and a functional area that transmits infrared light, and the liquid crystal display panel includes:
  • An array substrate including a plurality of insulating layers
  • a color filter substrate disposed opposite to the array substrate, includes a plurality of insulating layers
  • the number of reflective interfaces formed by adjacent insulating layers with different refractive indices in the functional area is greater than that of the phases with different refractive indices in the display area.
  • the number of adjacent reflection interfaces, the absolute value of the difference in refractive index of adjacent insulating layers on both sides of the reflection interface is greater than or equal to a first preset threshold.
  • the plurality of insulating layers include a first substrate and a protective layer, and on the side of the first substrate close to the protective layer and the first substrate away from the protective layer, In at least one of the sides of the protective layer, the number of reflection interfaces formed by adjacent insulating layers with different refractive indices in the functional area is greater than the reflection interface formed by adjacent insulating layers with different refractive indices in the display area. The number of interfaces.
  • the color filter substrate further includes:
  • the black matrix disposed between the first substrate and the protective layer, the black matrix is provided with a corresponding first opening in the functional area, and the first opening at least covers the functional area;
  • the plurality of insulating layers further include: an infrared light-transmitting layer disposed in the functional area and between the first substrate and the protective layer, the infrared-transmitting layer and The absolute value of the refractive index difference between adjacent insulating layers is greater than or equal to the first preset threshold.
  • the liquid crystal display panel includes a plurality of display pixels arranged in the display area, and the black matrix is provided with a second opening corresponding to the display pixels;
  • the plurality of insulating layers further include: a color-resistive layer disposed at the first opening and the second opening, the absolute value of the refractive index difference between the color-resistant layer and the adjacent insulating layer greater than or equal to the first preset threshold,
  • the infrared light-transmitting layer is disposed between the color-resisting layer and the first substrate, or the infrared-transmitting layer is disposed between the color-resisting layer and the protective layer.
  • the color-resist layer in the display area, includes: a plurality of color-resist blocks corresponding to colors of display pixels;
  • the color-resisting layer includes: at least two color-resisting sub-layers of different colors that are laminated, and the absolute value of the difference in refractive index between the color-resisting sub-layers of different colors is less than or equal to the first Two preset thresholds, the second preset threshold is smaller than the first preset threshold.
  • the infrared light-transmitting layer includes: a first inorganic layer and a second inorganic layer stacked,
  • the absolute value of the refractive index difference between the first inorganic layer and the adjacent insulating layer is greater than or equal to the first preset threshold
  • the absolute value of the difference in refractive index between the second inorganic layer and the adjacent insulating layer is greater than or equal to the first preset threshold.
  • the plurality of insulating layers further include: a high-resistance layer disposed on a side of the first substrate away from the protective layer,
  • the high resistance layer includes: a first high resistance area located in the functional area and a second high resistance area located in the display area, and the high resistance layer is located between the first high resistance area and the second high resistance area.
  • the refractive index of the barrier area is different;
  • the absolute value of the difference between the refractive index of the high resistance layer in the first high resistance region and the refractive index of the first substrate is greater than or equal to the first preset threshold
  • the absolute value of the difference between the refractive index of the high-resistance layer in the second high-resistance region and the refractive index of the first substrate is less than or equal to a second preset threshold, and the second preset threshold is smaller than the first a preset threshold.
  • the liquid crystal display panel further includes: a first polarizer arranged on the side of the array substrate away from the color filter substrate, and a first polarizer arranged on the side of the color filter substrate away from the array substrate. second polarizer,
  • the high resistance layer is disposed between the first substrate and the second polarizer.
  • the plurality of insulating layers include: a second substrate and a passivation layer, and the side of the second substrate close to the passivation layer and the second substrate On at least one of the sides away from the passivation layer, the number of reflection interfaces formed by adjacent insulating layers of different refractive indices located in the functional area is greater than that of adjacent insulating layers of different refractive indices located in the display area The number of reflective interfaces formed.
  • the array substrate further includes a conductive metal layer, and the conductive metal layer is provided with a corresponding third opening in the functional area, and the third opening at least covers the functional area.
  • the plurality of insulating layers further include: a buffer layer, a gate insulating layer, an interlayer insulating layer sequentially stacked between the second substrate and the passivation layer layer, the buffer layer extends from the display area to the functional area, the gate insulating layer extends from the display area to the functional area, and the interlayer insulating layer extends from the display area to the functional area. the functional area;
  • the metal conductive layer includes: a first electrode layer and a second electrode layer arranged on both sides of the passivation layer, and the passivation layer is in direct contact with the planarization layer in the functional area.
  • the embodiment of the present application provides a vehicle-mounted liquid crystal display device
  • the vehicle-mounted liquid crystal display device includes:
  • a liquid crystal display panel including a display area and a functional area that transmits infrared light
  • the liquid crystal display panel includes an array substrate and a color filter substrate
  • the array substrate includes a plurality of insulating layers
  • the color filter substrate is arranged opposite to the array substrate , including a plurality of insulating layers, wherein, in the array substrate and/or the color filter substrate, the number of reflective interfaces formed by adjacent insulating layers with different refractive indices in the functional area is greater than that in the display
  • the number of adjacent reflective interfaces with different refractive indices in the region, the absolute value of the difference in refractive index of adjacent insulating layers on both sides of the reflective interface is greater than or equal to a first preset threshold;
  • An infrared camera is arranged on a side of the array substrate away from the color filter substrate, and the infrared camera is arranged in the functional area.
  • the plurality of insulating layers include a first substrate and a protective layer, and on the side of the first substrate close to the protective layer and the first substrate away from the protective layer, In at least one of the sides of the protective layer, the number of reflection interfaces formed by adjacent insulating layers with different refractive indices in the functional area is greater than the reflection interface formed by adjacent insulating layers with different refractive indices in the display area. The number of interfaces.
  • the color filter substrate further includes:
  • the black matrix disposed between the first substrate and the protective layer, the black matrix is provided with a corresponding first opening in the functional area, and the first opening at least covers the functional area;
  • the plurality of insulating layers further include: an infrared light-transmitting layer disposed in the functional area and between the first substrate and the protective layer, the infrared-transmitting layer and The absolute value of the refractive index difference between adjacent insulating layers is greater than or equal to the first preset threshold.
  • the liquid crystal display panel includes a plurality of display pixels arranged in the display area, and the black matrix is provided with a second opening corresponding to the display pixels;
  • the plurality of insulating layers further include: a color-resistive layer disposed at the first opening and the second opening, the absolute value of the refractive index difference between the color-resistant layer and the adjacent insulating layer greater than or equal to the first preset threshold,
  • the infrared light-transmitting layer is disposed between the color-resisting layer and the first substrate, or the infrared-transmitting layer is disposed between the color-resisting layer and the protective layer.
  • the color-resist layer in the display area, includes: a plurality of color-resist blocks corresponding to the colors of the display pixels;
  • the color-resisting layer includes: at least two color-resisting sub-layers of different colors that are laminated, and the absolute value of the difference in refractive index between the color-resisting sub-layers of different colors is less than or equal to the first Two preset thresholds, the second preset threshold is smaller than the first preset threshold.
  • the infrared light-transmitting layer includes: a first inorganic layer and a second inorganic layer stacked,
  • the absolute value of the refractive index difference between the first inorganic layer and the adjacent insulating layer is greater than or equal to the first preset threshold
  • the absolute value of the difference in refractive index between the second inorganic layer and the adjacent insulating layer is greater than or equal to the first preset threshold.
  • the plurality of insulating layers further include: a high-resistance layer disposed on a side of the first substrate away from the protective layer,
  • the high resistance layer includes: a first high resistance area located in the functional area and a second high resistance area located in the display area, and the high resistance layer is located between the first high resistance area and the second high resistance area.
  • the refractive index of the barrier area is different;
  • the absolute value of the difference between the refractive index of the high resistance layer in the first high resistance region and the refractive index of the first substrate is greater than or equal to the first preset threshold
  • the absolute value of the difference between the refractive index of the high-resistance layer in the second high-resistance region and the refractive index of the first substrate is less than or equal to a second preset threshold, and the second preset threshold is smaller than the first a preset threshold.
  • the liquid crystal display panel further includes: a first polarizer arranged on the side of the array substrate away from the color filter substrate, and a first polarizer arranged on the side of the color filter substrate away from the array substrate. second polarizer,
  • the high resistance layer is disposed between the first substrate and the second polarizer.
  • the plurality of insulating layers include: a second substrate and a passivation layer, and the side of the second substrate close to the passivation layer and the second substrate On at least one of the sides away from the passivation layer, the number of reflection interfaces formed by adjacent insulating layers of different refractive indices located in the functional area is greater than that of adjacent insulating layers of different refractive indices located in the display area The number of reflective interfaces formed.
  • the present application provides a liquid crystal display panel and a vehicle-mounted liquid crystal display device;
  • the liquid crystal display panel includes a display area and a functional area for transmitting infrared light
  • the liquid crystal display panel includes an array substrate and a color film substrate
  • the array substrate includes a plurality of insulating layers
  • the substrate is set opposite to the array substrate and includes a plurality of insulating layers, wherein, in the array substrate and/or the color filter substrate, the number of reflective interfaces formed by adjacent insulating layers with different refractive indices in the functional area is greater than that in the display area.
  • the number of adjacent reflective interfaces with different refractive indices, and the absolute value of the difference in refractive index of adjacent insulating layers on both sides of the reflective interface is greater than or equal to a first preset threshold.
  • the number of reflective interfaces formed by adjacent insulating layers with different refractive indices in the functional area is greater than the number of adjacent reflective interfaces with different refractive indices in the display area, because The reflectivity of the liquid crystal display panel is superimposed by the reflectivity of each film layer.
  • the number of reflective interfaces in the functional area is greater than the number of reflective interfaces in the display area. Compared with The display area improves the light reflectivity of the functional area, thereby reducing or even eliminating the brightness difference between the functional area and the display area when the display is completely black.
  • FIG. 1 is a schematic diagram of a liquid crystal display panel provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of reflection of light passing through an insulating layer according to an embodiment of the present application.
  • FIG. 3 is a first schematic diagram of a color filter substrate provided by an embodiment of the present application.
  • FIG. 4 is a second schematic view of the color filter substrate provided by the embodiment of the present application.
  • FIG. 5 is a schematic diagram of a vehicle-mounted liquid crystal display device provided by an embodiment of the present application.
  • the embodiment of the present application aims at the technical problem that the existing liquid crystal display screen cannot realize a completely black display due to the difference in the reflectivity of light in the infrared camera setting area compared with the display area, and provides a liquid crystal display panel and a vehicle-mounted liquid crystal display device. To solve the above technical problems.
  • the embodiment of the present application provides a liquid crystal display panel
  • the liquid crystal display panel 1 includes a display area 131 and a functional area 132 that transmits infrared light
  • the liquid crystal display panel 1 includes:
  • the array substrate 12 includes a plurality of insulating layers (such as the second substrate 121);
  • the color filter substrate 11 is disposed opposite to the array substrate 12 and includes a plurality of insulating layers (such as a first substrate 111);
  • the number of reflective interfaces formed by adjacent insulating layers with different refractive indices in the functional area 132 is greater than that in the display area 131.
  • the number of adjacent reflective interfaces of refractive index, where the absolute value of the difference in refractive index of adjacent insulating layers on both sides of the reflective interface is greater than or equal to a first preset threshold.
  • An embodiment of the present application provides a liquid crystal display panel.
  • the number of reflective interfaces formed by adjacent insulating layers with different refractive indices in the functional area in the array substrate and/or color filter substrate is greater than the number of reflection interfaces with different refractive indices in the display area.
  • the number of adjacent reflective interfaces because the reflectivity of the liquid crystal display panel is superimposed by the reflectivity of each film layer, the application does not affect the infrared optical transmittance, by making the number of reflective interfaces in the functional area larger than that of the display area
  • the number of reflective interfaces increases the reflectivity of light in the functional area compared to the display area, thereby reducing or even eliminating the brightness difference between the functional area and the display area when the display is completely black.
  • the insulating layer refers to a common electrode layer and a pixel electrode layer not including a metal layer (such as a gate layer), ITO (indium tin oxide) or other conductive materials, and a semiconductor organic layer.
  • a metal layer such as a gate layer
  • ITO indium tin oxide
  • the inorganic film layer and the organic film layer of the source layer, specifically, the black matrix is due to light absorption, so the insulating layer defined in the embodiment of the present application does not include the black matrix.
  • the reflective interface refers to the interface between adjacent insulating layers with different refractive indices that reflects visible light, and the absolute value of the difference in refractive index of the adjacent insulating layers on both sides of the reflective interface is greater than or equal to the first predetermined value.
  • Set the threshold For example, in the display area, as shown in FIG.
  • the absolute value of the difference in the refractive index between the first substrate 111 and the color-resist layer 113 is greater than or equal to the first preset threshold, and the difference between the first substrate 111 and the color-resist layer 113
  • the interface is a reflective interface, and the black matrix 115 will absorb light and will not reflect light, so the interface between the black matrix 115 and the first substrate 111 is not a reflective interface, and at the same time, the refractive index of the color resist layer 113 and the protective layer 114
  • the absolute value of the difference is greater than or equal to the first preset threshold, the interface between the color resist layer 113 and the protective layer 114 is a reflective interface, and the support column 116 is arranged in the area corresponding to the black matrix 115, there is no light or less light It will diverge between the supporting pillars 116 and the protective layer 114, with little or no reflection, and the supporting pillars 116 are arranged at intervals without a complete interface, which further reduces the reflected light or even
  • the first preset threshold value means that when the refractive index of two adjacent film layers is greater than a threshold value, the interface between the adjacent film layers on both sides will produce reflection or relatively large emission.
  • the interface between two adjacent insulating layers can be used as a reflective interface.
  • a color-resist layer will include multiple color-resistors that transmit light of different colors, but the refractive index between multiple color-resistors that transmit light of different colors The difference is small or even the same, for example, less than or equal to 0.01. At this time, the interface between the two layers of color resistance basically has no reflection of light.
  • the absolute value of the difference between the refractive indices of adjacent insulating layers is greater than or equal to the first preset threshold, for example, greater than or equal to 0.1 (in practical applications, 0.1, 0.1, or 0.1 can also be selected. 0.2, 0.3, 0, 4, 0.5, etc.), the interface between adjacent insulating layers is a reflective interface, and the absolute value of the refractive index difference between adjacent insulating layers is less than or equal to the second preset threshold, adjacent insulating layers
  • the layers can be regarded as a whole, and when the absolute value of the refractive index difference between adjacent insulating layers is between the second preset threshold and the first preset threshold, the interface between adjacent insulating layers is not regarded as a reflective interface.
  • the liquid crystal display device includes a plurality of insulating layers: a first film layer 21, a second film layer 22 and a third film layer 23.
  • the refractive index of the first film layer 21 is n1
  • the refractive index of the second film layer 22 is n2
  • the refractive index of the third film layer 23 is n3, then the external light 24 is between the first film layer 21 and the second film layer 22
  • the reflectivity of external light of the liquid crystal display device R R1+R2.
  • the number of reflective interfaces formed by the insulating layer in the functional area is greater than the number of reflective interfaces formed by the insulating layer in the display area, then the The reflectivity of the functional area of the liquid crystal display panel to the external ambient light is improved, thereby narrowing the gap between the functional area and the display area in the light reflectance of the external ambient light, and improving the brightness uniformity of the liquid crystal display panel when it is completely black.
  • the number of reflective interfaces formed by adjacent insulating layers with different refractive indices in the functional area is greater than that of adjacent insulating layers in different positions in the display area.
  • the number of reflective interfaces formed by the layer is greater than that of adjacent insulating layers in different positions in the display area.
  • the color filter substrate is designed, an insulating layer is set in the space formed by the removed color resist and black matrix, and the reflective interface formed by adjacent insulating layers with different refractive indices in the functional area is increased, so that The number of reflective interfaces formed by adjacent insulating layers with different refractive indices in the display area is greater than the number of reflective interfaces formed by adjacent insulating layers with different refractive indices in the display area, thereby increasing the light reflectivity of the functional area, reducing the functional area and The difference in light reflectance in the display area improves the uniformity of the liquid crystal display panel when it is completely black.
  • a plurality of the insulating layers include a first substrate 111 and a protective layer 114, and the first substrate 111 is close to the protective layer.
  • the number of reflection interfaces formed by adjacent insulating layers with different refractive indices in the functional region 132 is greater than that in the functional region 132.
  • the reflectivity of the functional area is increased, and the gap between the reflectivity of the functional area and the display area is narrowed, thereby improving the brightness of the liquid crystal display panel when it is completely black. Uniformity.
  • the number of reflective interfaces of insulating layers with different refractive indices in the functional area is greater than the number of reflective interfaces of insulating layers with different refractive indices in the display area, increasing the reflectivity of the functional area, reducing the reflectivity of the functional area and the display area gap, thereby improving the uniformity of brightness when the liquid crystal display panel is completely black.
  • the color filter substrate 11 further includes: a black matrix 115 disposed between the first substrate 111 and the protective layer 114, and the black matrix 115 is placed between the
  • the functional area 132 is provided with a corresponding first opening, and the first opening at least covers the functional area 132;
  • the plurality of insulating layers further include: an infrared light-transmitting layer 112 arranged in the functional area 132 and between the first substrate 111 and the protective layer 114, the The absolute value of the refractive index difference between the infrared light-transmitting layer 112 and the adjacent insulating layer is greater than or equal to the first preset threshold.
  • the absolute difference in the refractive index between the infrared-transmitting layer and the adjacent insulating layer If the value is greater than or equal to the first preset threshold, the number of reflective interfaces between the first substrate and the protective layer is increased, the reflectivity of the functional area is improved, and the gap between the reflectivity of the functional area and the display area is narrowed, thereby improving the liquid crystal display.
  • the uniformity of brightness when the panel is completely black is displayed, and the thickness of the liquid crystal display panel will not be increased because the increased infrared light-transmitting layer is arranged between the first substrate and the protective layer.
  • the liquid crystal display panel 1 includes a plurality of display pixels arranged in the display area, and the black matrix 115 is provided with a second opening corresponding to the display pixels;
  • the multiple insulating layers further include: a color-resistive layer 113 disposed at the first opening and the second opening, and the refractive index difference between the color-resistant layer 113 and the adjacent insulating layer is The absolute value is greater than or equal to the first preset threshold;
  • the infrared-transmitting layer 112 is disposed between the color-resist layer 113 and the first substrate 111, or, as shown in FIG. 3 , the infrared-transmitting layer 112 is disposed between the color-resist layer 113 and the first substrate 111. between the protective layers 114.
  • a color-resist layer is provided in the display area, and the embodiment of the present application considers that the transmittance of the color-resist to infrared light is relatively high. Therefore, when the color-resist layer is formed in the display area, the functional area can be formed at the same time.
  • the color resist layer increases the number of reflective interfaces in the functional area, improves the reflectivity of the functional area, and narrows the gap between the reflectance of the functional area and the display area, thereby improving the brightness uniformity of the liquid crystal display panel when it is completely black.
  • the setting method does not need to increase the process of the liquid crystal display panel, nor does it need to increase the thickness of the liquid crystal display panel.
  • the infrared light-transmitting layer is arranged between the color-resisting layer and the first substrate, and in the functional area, a reflective interface can be formed between the first substrate and the infrared-transmitting layer, and the color-resisting layer and the infrared-transmitting layer are formed Reflective interface, a reflective interface is formed between the color resist layer and the protective layer, thereby increasing the reflective interface of the functional area, narrowing the reflectivity gap between the functional area and the display area, thereby improving the brightness uniformity of the liquid crystal display panel when it is completely black.
  • a reflective interface can be formed between the first substrate and the color-resisting layer, and a reflective interface can be formed between the color-resisting layer and the infrared-transmitting layer.
  • a reflective interface is formed between the infrared light-transmitting layer and the protective layer, thereby increasing the reflective interface of the functional area, narrowing the reflectivity gap between the functional area and the display area, thereby improving the brightness uniformity of the liquid crystal display panel when it is completely black.
  • the infrared light-transmitting layer can be a silicon oxide film with a refractive index of 1.5 or a silicon nitride film with a refractive index of 1.85, or it can be determined according to actual needs, and there is no limitation here.
  • the color-resist layer 113 includes: a plurality of color-resist blocks corresponding to colors of display pixels (such as red color-resist blocks 113a, green color-resist blocks block 113b, blue color resistance block 113c);
  • the color-resist layer 113 includes: at least two color-resist sub-layers 113d (for example, including a red color-resist sub-layer 211 and a blue color-resist sub-layer 212) that are stacked and arranged to transmit different colors.
  • the absolute value of the difference in refractive index between the color-resist sub-layers 113d of different colors is less than or equal to a second preset threshold, and the second preset threshold is smaller than the first preset threshold. Since the materials that pass through the color-resisting sub-layers of different colors are similar, and the refractive index is similar, in terms of light reflection, the interface between the two has a low reflectivity to light.
  • the two can be regarded as a whole, and the refraction
  • the efficiency can also be regarded as a whole, the interface between the two is not a reflective interface, and by setting multi-layer color resist sub-layers in the functional area, the blocking of visible light can be improved without increasing the process of the liquid crystal display panel, avoiding Light leakage in the visible light function area.
  • the infrared-transmitting layer 112 includes: a first inorganic layer 112a and a second inorganic layer 112b stacked;
  • the absolute value of the refractive index difference between the first inorganic layer 112a and the adjacent insulating layer is greater than or equal to the first preset threshold
  • the absolute value of the refractive index difference between the second inorganic layer 112b and the adjacent insulating layer is greater than or equal to the first preset threshold.
  • the first inorganic layer 112a is disposed between the first substrate 111 and the second inorganic layer 112b, and the refractive index of the first inorganic layer 112a is greater than that of the first substrate.
  • the refractive index of 111, the refractive index of the first inorganic layer 112a is greater than the refractive index of the second inorganic layer 112b, the refractive index of the second inorganic layer is smaller than the refractive index of the color resist layer 113, and the adjacent
  • the absolute value of the refractive index difference between the insulating layers is greater than or equal to the first preset threshold.
  • the refractive index of the insulating layer in the functional area By setting the refractive index of the insulating layer in the functional area to be staggered, the refractive index difference between the two adjacent insulating layers is relatively large, and the refractive index of a single layer will not be too large. This leads to excessive reflection of light, increases the number of reflective interfaces, and narrows the reflectivity gap between the functional area and the display area, thereby improving the brightness uniformity of the liquid crystal display panel when it is completely black.
  • first inorganic layer and the second inorganic layer in the infrared light-transmitting layer are described in detail by taking the first inorganic layer and the second inorganic layer in the infrared light-transmitting layer as an example disposed between the first substrate and the color-resisting layer, but the embodiments of the present application are not limited thereto.
  • the first inorganic layer It can also be arranged separately from the second inorganic layer or adjacently arranged in other positions.
  • the above-mentioned embodiments have described in detail the method of adding a color-resisting layer and an infrared light-transmitting layer to increase the reflection interface, but the embodiments of the present application are not limited thereto.
  • only an infrared-transmitting layer is provided so that the infrared-transmitting layer includes multiple film layers
  • the absolute value of the refractive index difference between any one of the plurality of film layers and the adjacent insulating layer is greater than or equal to the first preset threshold value, or a plurality of infrared light-transmitting layers are provided so that each infrared-transmitting layer
  • the absolute value of the refractive index difference between the optical layer and the adjacent insulating layer is greater than or equal to the first preset threshold.
  • the plurality of insulating layers further include: a high resistance layer 311;
  • the high resistance layer 311 includes: a first high resistance area 311a located in the functional area 132 and a second high resistance area 311b located in the display area 131, the high resistance layer 311 is located in the first high resistance area 311a and the second high resistance region 311b have different refractive indices;
  • the absolute value of the difference between the refractive index of the high resistance layer 311 in the first high resistance region 311a and the refractive index of the first substrate 111 is greater than or equal to the first preset threshold;
  • the absolute value of the difference between the refractive index of the high resistance layer 311 in the second high resistance region 311b and the refractive index of the first substrate 111 is less than or equal to a second preset threshold, and the second preset threshold is less than The first preset threshold.
  • the absolute value of the refractive index difference of the first substrate in the second high-resistance area is less than or equal to the second preset threshold, then the number of reflective interfaces in the functional area is increased, and the display area is flattened to reduce the functional area and the display area The difference in reflectivity, thereby improving the brightness uniformity of the liquid crystal display panel when it is completely black.
  • the liquid crystal display panel 1 further includes: a first polarizer 14 arranged on the side of the array substrate 12 away from the color filter substrate 11 , and a a second polarizer 15 on the side of the color filter substrate 11 away from the array substrate 12;
  • the high resistance layer 311 is disposed between the first substrate 111 and the second polarizer 15 . By arranging the high resistance layer between the first substrate and the second polarizer, damage to the high resistance layer is avoided.
  • the difference in refractive index between the first high resistance region and the second high resistance region of the high resistance layer can be formed by doping.
  • the array substrate 12 further includes a conductive metal layer (for example, a first electrode layer 126 and a second electrode layer 128 ), and the conductive metal layer is disposed on the functional area 132 There is a corresponding third opening, and the third opening covers at least the functional area 132 .
  • the film layer of the array substrate located in the functional area is dug to increase the light transmittance, resulting in uneven brightness caused by the difference in light reflectivity between the functional area and the display area.
  • the plurality of insulating layers further include: a buffer stacked sequentially between the second substrate 121 and the passivation layer 127 Layer 122, gate insulating layer 123, interlayer insulating layer 124, planarization layer 125, the buffer layer 122 extends from the display area 131 to the functional area 132, the gate insulating layer 123 extends from the display The region 131 extends to the functional region 132, and the interlayer insulating layer 124 extends from the display region 131 to the functional region 132;
  • the metal conductive layer includes: a first electrode layer 126 and a second electrode layer 128 arranged on both sides of the passivation layer 127, the passivation layer 127 is directly connected to the planarization layer 125 in the functional area 132 touch.
  • this application increases the number of reflective interfaces in the functional area by retaining or increasing the film layer of the functional area, and improves the reflectivity of the functional area. The difference in reflectivity between the functional area and the display area is narrowed, thereby improving the uniformity of brightness when the liquid crystal display panel is completely black.
  • the number of reflective interfaces formed by the adjacent insulating layers of the functional area is greater than that formed by the adjacent insulating layers of the display area. The number of reflective interfaces.
  • the plurality of insulating layers further include a transparent layer, and the absolute value of the difference in refractive index between the transparent layer and the adjacent insulating layer is greater than or equal to the The first preset threshold. That is, by adding a transparent layer in the array substrate, the number of reflective interfaces in the functional area is further increased, thereby increasing the reflectivity of the functional area, narrowing the gap between the reflectance of the functional area and the display area, and improving the performance of the liquid crystal display panel when it is completely black. uniformity of brightness.
  • the following table illustrates the theoretical data of the reflectivity of the functional region in the embodiment of the present application.
  • the second substrate itself does not form a reflective interface, therefore, the reflectance of the reflective interface formed by the second substrate and the silicon nitride layer in the buffer layer is recorded in the column of the silicon nitride layer in the buffer layer, and other reflectances
  • the numerical values represent the reflective interface as described above. It can be known from the above table 1 that in the functional area, compared with the existing reflectance of the functional area on the array substrate side after removing the film layer is 2.31%, this application increases the reflectance to 6.28%, which improves the reflectance of the functional area .
  • the difference in refractive index between the gate insulating layer and the silicon oxide layer in the buffer layer is not too large (0.04), less than the first preset threshold (greater than or equal to 0.1), and the contact surface between them The contribution to the reflectivity of external ambient light is small, and the contact surface between them may not be counted as the reflective interface mentioned above.
  • the first substrate itself does not form a reflective interface, therefore, the reflectivity of the reflective interface formed by the first substrate and the silicon nitride layer in the infrared light-transmitting layer is recorded in the column of silicon nitride layer in the infrared light-transmitting layer , other reflectivity values represent the reflective interface as described above. It can be known from the above table 2 that in the functional area, compared with the reflectance of the functional area on the side of the color filter substrate after removing the film layer of the existing 0.78%, this application increases the reflectance to 2.90%, which improves the effect of the functional area on the outside world. The reflectivity of ambient light.
  • the vehicle-mounted liquid crystal display device includes:
  • the liquid crystal display panel includes a display area 131 and a functional area 132 that transmits infrared light.
  • the liquid crystal display panel includes an array substrate 12 and a color filter substrate 11.
  • the array substrate 12 includes a plurality of insulating layers (such as a second substrate 121),
  • the color filter substrate 11 is arranged opposite to the array substrate 12, and includes a plurality of insulating layers (such as a first substrate 111), wherein, in the array substrate 12 and/or the color filter substrate 11, the The number of reflective interfaces formed by adjacent insulating layers with different refractive indices in the functional area 132 is greater than the number of adjacent reflective interfaces with different refractive indices located in the display area 131, and the number of adjacent insulating layers on both sides of the reflective interface The absolute value of the difference in refractive index is greater than or equal to a first preset threshold;
  • the infrared camera 41 is arranged on the side of the array substrate 12 away from the color filter substrate 11, and the infrared camera 41 is arranged in the functional area 132;
  • the backlight module (not shown in the drawings) is arranged on the side of the array substrate 12 away from the color filter substrate 11.
  • the backlight module can be provided with an opening corresponding to the functional area 132, and the infrared camera 41 can be inserted into the opening of the backlight module. .
  • liquid crystal display panel used in the vehicle-mounted liquid crystal display device is the liquid crystal display panel mentioned above, and its specific structure has been described in detail above, and will not be repeated here.
  • Embodiments of the present application provide a liquid crystal display panel and a vehicle-mounted liquid crystal display device;
  • the liquid crystal display panel includes a display area and a functional area for transmitting infrared light
  • the liquid crystal display panel includes an array substrate and a color filter substrate
  • the array substrate includes a plurality of insulating layers
  • the color filter substrate is arranged opposite to the array substrate, and includes a plurality of insulating layers, wherein, in the array substrate and/or the color filter substrate, the number of reflective interfaces formed by adjacent insulating layers with different refractive indices in the functional area is greater than that in the display area.
  • the number of adjacent reflective interfaces with different refractive indices in the region, and the absolute value of the difference between the refractive indices of adjacent insulating layers on both sides of the reflective interface is greater than or equal to the first preset threshold.
  • the number of reflective interfaces formed by adjacent insulating layers with different refractive indices in the functional area is greater than the number of adjacent reflective interfaces with different refractive indices in the display area, because The reflectivity of the liquid crystal display panel is superimposed by the reflectivity of each film layer.
  • the number of reflective interfaces in the functional area is greater than the number of reflective interfaces in the display area. Compared with The display area improves the light reflectivity of the functional area, thereby reducing or even eliminating the brightness difference between the functional area and the display area when the display is completely black.
  • a liquid crystal display panel and a vehicle-mounted liquid crystal display device provided by the embodiments of the present application have been described in detail above.
  • the principles and implementation methods of the present application have been explained by using specific examples in this paper.
  • the descriptions of the above embodiments are only used to help Understand the technical solution and its core idea of the present application; those skilled in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or The replacement does not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

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Abstract

一种液晶显示面板(1)和车载液晶显示装置;液晶显示面板(1)通过使阵列基板(12)和/或彩膜基板(11)中,功能区(132)的反射界面的数量大于显示区(131)的反射界面的数量,在不影响红外光透过率的状况下,相较于显示区(131)提高了功能区(132)的光线的反射率,从而减小甚至消除了全黑显示时功能区(132)和显示区(131)的亮度差异。

Description

液晶显示面板和车载液晶显示装置 技术领域
本申请涉及显示技术领域,尤其是涉及一种液晶显示面板和车载液晶显示装置。
背景技术
随着显示技术的发展和安全驾驶的要求,现有车辆会设置DMS(Driver Monitor System,驾驶员状态监测系统),通过在车辆上的设置主动式红外传感器,手机红外光信息,从而监测驾驶员状态。具体的,为了隐藏红外摄像头,降低开孔,会将红外摄像头设置在液晶显示屏下,通过对液晶显示屏进行挖孔,实现红外摄像头的正常工作。当前具有红外摄像头的液晶显示屏会通过挖盲孔,去除彩膜基板和阵列基板中的膜层,提高红外光的透过率。但由于红外摄像头的设置区域中,液晶显示屏挖除多个膜层,导致红外摄像头设置区的光线的反射率和显示区的光线的反射率不同,液晶显示屏会存在亮度差,从而导致无法到达全黑现象。
所以,现有液晶显示屏存在红外摄像头设置区相较于显示区的光线的反射率不同所导致的无法实现全黑显示的技术问题。
技术问题
本申请实施例提供一种液晶显示面板和车载液晶显示装置,用以缓解现有液晶显示屏存在红外摄像头设置区相较于显示区的光线的反射率不同所导致的无法实现全黑显示的技术问题。
技术解决方案
为解决上述问题,本申请提供的技术方案如下:
本申请实施例提供一种液晶显示面板,该液晶显示面板包括显示区和透射红外光线的功能区,所述液晶显示面板包括:
阵列基板,包括多个绝缘层;
彩膜基板,与所述阵列基板相对设置,包括多个绝缘层;
其中,在所述阵列基板和/或所述彩膜基板中,位于所述功能区的不同折射率的相邻绝缘层形成的反射界面的数量,大于位于所述显示区的不同折射率的相邻反射界面的数量,所述反射界面两侧的相邻绝缘层的折射率的差值的绝对值大于或者等于第一预设阈值。
在一些实施例中,在所述彩膜基板中,多个所述绝缘层包括第一基板和保护层,在所述第一基板靠近所述保护层的一侧和所述第一基板远离所述保护层的一侧的至少一个中,位于所述功能区的不同折射率的相邻绝缘层形成的反射界面的数量,大于位于所述显示区的不同折射率的相邻绝缘层形成的反射界面的数量。
在一些实施例中,所述彩膜基板还包括:
设置在所述第一基板和所述保护层之间的黑色矩阵,所述黑色矩阵在所述功能区设置有对应的第一开口,所述第一开口至少覆盖所述功能区;
在所述彩膜基板中,多个所述绝缘层还包括:设置在所述功能区且位于所述第一基板和所述保护层之间的透红外光层,所述透红外光层与相邻的所述绝缘层之间的折射率差值的绝对值大于或等于所述第一预设阈值。
在一些实施例中,所述液晶显示面板包括多个设置在所述显示区的显示像素,所述黑色矩阵在对应所述显示像素设置有第二开口;
多个所述绝缘层还包括:设置所述第一开口和所述第二开口处的色阻层,所述色阻层与相邻的所述绝缘层之间的折射率差值的绝对值大于或等于所述第一预设阈值,
所述透红外光层设置在所述色阻层和所述第一基板之间,或者,所述透红外光层设置在所述色阻层和所述保护层之间。
在一些实施例中,在所述显示区,所述色阻层包括:多个与显示像素对应颜色的色阻块;
在所述功能区,所述色阻层包括:层叠设置的至少两层透过不同颜色的色阻子层,透过不同颜色的色阻子层的折射率差值的绝对值小于或等于第二预设阈值,所述第二预设阈值小于所述第一预设阈值。
在一些实施例中,所述透红外光层包括:层叠设置的第一无机层和第二无机层,
所述第一无机层与相邻的所述绝缘层之间的折射率差值的绝对值大于或等于所述第一预设阈值;
所述第二无机层与相邻的所述绝缘层之间的折射率差值的绝对值大于或等于所述第一预设阈值。
在一些实施例中,在所述彩膜基板中,多个所述绝缘层还包括:设置在所述第一基板远离所述保护层的一侧的高阻层,
所述高阻层包括:位于所述功能区的第一高阻区和位于所述显示区的第二高阻区,所述高阻层在所述第一高阻区和所述第二高阻区的折射率不同;
所述高阻层在所述第一高阻区的折射率与所述第一基板的折射率差值的绝对值大于或等于所述第一预设阈值;
所述高阻层在所述第二高阻区的折射率与所述第一基板的折射率差值的绝对值小于或等于第二预设阈值,所述第二预设阈值小于所述第一预设阈值。
在一些实施例中,所述液晶显示面板还包括:设置在所述阵列基板远离所述彩膜基板一侧的第一偏光片、和设置在所述彩膜基板远离所述阵列基板一侧的第二偏光片,
所述高阻层设置在所述第一基板和所述第二偏光片之间。
在一些实施例中,在所述阵列基板中,多个所述绝缘层包括:第二基板和钝化层,在所述第二基板靠近所述钝化层的一侧和所述第二基板远离所述钝化层的一侧中的至少一个,位于所述功能区的不同折射率的相邻绝缘层形成的反射界面的数量,大于位于所述显示区的不同折射率的相邻绝缘层形成的反射界面的数量。
在一些实施例中,所述阵列基板还包括金属导电层,所述金属导电层在所述功能区设置有对应的第三开口,所述第三开口至少覆盖所述功能区。
在一些实施例中,在所述阵列基板中,多个所述绝缘层还包括:依次层叠在所述第二基板和所述钝化层之间的缓冲层、栅极绝缘层、层间绝缘层,所述缓冲层从所述显示区延伸至所述功能区,所述栅极绝缘层从所述显示区延伸至所述功能区,所述层间绝缘层从所述显示区延伸至所述功能区;
所述金属导电层包括:设置在所述钝化层两侧的第一电极层和第二电极层,所述钝化层在所述功能区与所述平坦化层直接接触。
同时,本申请实施例提供一种车载液晶显示装置,该车载液晶显示装置包括:
液晶显示面板,包括显示区和透射红外光线的功能区,所述液晶显示面板包括阵列基板和彩膜基板,所述阵列基板包括多个绝缘层,所述彩膜基板与所述阵列基板相对设置,包括多个绝缘层,其中,在所述阵列基板和/或所述彩膜基板中,位于所述功能区的不同折射率的相邻绝缘层形成的反射界面的数量,大于位于所述显示区的不同折射率的相邻反射界面的数量,所述反射界面两侧的相邻绝缘层的折射率的差值的绝对值大于或者等于第一预设阈值;
红外摄像头,设置于所述阵列基板远离所述彩膜基板的一侧,且所述红外摄像头设置于所述功能区。
在一些实施例中,在所述彩膜基板中,多个所述绝缘层包括第一基板和保护层,在所述第一基板靠近所述保护层的一侧和所述第一基板远离所述保护层的一侧的至少一个中,位于所述功能区的不同折射率的相邻绝缘层形成的反射界面的数量,大于位于所述显示区的不同折射率的相邻绝缘层形成的反射界面的数量。
在一些实施例中,所述彩膜基板还包括:
设置在所述第一基板和所述保护层之间的黑色矩阵,所述黑色矩阵在所述功能区设置有对应的第一开口,所述第一开口至少覆盖所述功能区;
在所述彩膜基板中,多个所述绝缘层还包括:设置在所述功能区且位于所述第一基板和所述保护层之间的透红外光层,所述透红外光层与相邻的所述绝缘层之间的折射率差值的绝对值大于或等于所述第一预设阈值。
在一些实施例中,所述液晶显示面板包括多个设置在所述显示区的显示像素,所述黑色矩阵在对应所述显示像素设置有第二开口;
多个所述绝缘层还包括:设置所述第一开口和所述第二开口处的色阻层,所述色阻层与相邻的所述绝缘层之间的折射率差值的绝对值大于或等于所述第一预设阈值,
所述透红外光层设置在所述色阻层和所述第一基板之间,或者,所述透红外光层设置在所述色阻层和所述保护层之间。
在一些实施例中,在所述显示区,所述色阻层包括:多个与显示像素对应 颜色的色阻块;
在所述功能区,所述色阻层包括:层叠设置的至少两层透过不同颜色的色阻子层,透过不同颜色的色阻子层的折射率差值的绝对值小于或等于第二预设阈值,所述第二预设阈值小于所述第一预设阈值。
在一些实施例中,所述透红外光层包括:层叠设置的第一无机层和第二无机层,
所述第一无机层与相邻的所述绝缘层之间的折射率差值的绝对值大于或等于所述第一预设阈值;
所述第二无机层与相邻的所述绝缘层之间的折射率差值的绝对值大于或等于所述第一预设阈值。
在一些实施例中,在所述彩膜基板中,多个所述绝缘层还包括:设置在所述第一基板远离所述保护层的一侧的高阻层,
所述高阻层包括:位于所述功能区的第一高阻区和位于所述显示区的第二高阻区,所述高阻层在所述第一高阻区和所述第二高阻区的折射率不同;
所述高阻层在所述第一高阻区的折射率与所述第一基板的折射率差值的绝对值大于或等于所述第一预设阈值;
所述高阻层在所述第二高阻区的折射率与所述第一基板的折射率差值的绝对值小于或等于第二预设阈值,所述第二预设阈值小于所述第一预设阈值。
在一些实施例中,所述液晶显示面板还包括:设置在所述阵列基板远离所述彩膜基板一侧的第一偏光片、和设置在所述彩膜基板远离所述阵列基板一侧的第二偏光片,
所述高阻层设置在所述第一基板和所述第二偏光片之间。
在一些实施例中,在所述阵列基板中,多个所述绝缘层包括:第二基板和钝化层,在所述第二基板靠近所述钝化层的一侧和所述第二基板远离所述钝化层的一侧中的至少一个,位于所述功能区的不同折射率的相邻绝缘层形成的反射界面的数量,大于位于所述显示区的不同折射率的相邻绝缘层形成的反射界面的数量。
有益效果
本申请提供一种液晶显示面板和车载液晶显示装置;该液晶显示面板包括 显示区和透射红外光线的功能区,液晶显示面板包括阵列基板和彩膜基板,阵列基板包括多个绝缘层,彩膜基板与阵列基板相对设置,包括多个绝缘层,其中,在阵列基板和/或彩膜基板中,位于功能区的不同折射率的相邻绝缘层形成的反射界面的数量,大于位于显示区的不同折射率的相邻反射界面的数量,反射界面两侧的相邻绝缘层的折射率的差值的绝对值大于或者等于第一预设阈值。本申请通过使阵列基板和/或彩膜基板中,位于功能区的不同折射率的相邻绝缘层形成的反射界面的数量,大于位于显示区的不同折射率的相邻反射界面的数量,由于液晶显示面板的反射率由各个膜层的反射率叠加,本申请在不影响红外光学透过率的状况下,通过使功能区的反射界面的数量大于显示区的反射界面的数量,相较于显示区提高了功能区的光线的反射率,从而减小甚至消除了全黑显示时功能区和显示区的亮度差异。
附图说明
下面结合附图,通过对本申请的具体实施方式详细描述,将使本申请的技术方案及其它有益效果显而易见。
图1为本申请实施例提供的液晶显示面板的示意图。
图2为本申请实施例提供的光线经过绝缘层的反射示意图。
图3为本申请实施例提供的彩膜基板的第一种示意图。
图4为本申请实施例提供的彩膜基板的第二种示意图。
图5为本申请实施例提供的车载液晶显示装置的示意图。
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。
本申请实施例针对现有液晶显示屏存在红外摄像头设置区相较于显示区的光线的反射率不同所导致的无法实现全黑显示的技术问题,提供一种液晶显示面板和车载液晶显示装置,用以解决上述技术问题。
如图1所示,本申请实施例提供一种液晶显示面板,该液晶显示面板1包括 显示区131和透射红外光线的功能区132,所述液晶显示面板1包括:
阵列基板12,包括多个绝缘层(例如第二基板121);
彩膜基板11,与所述阵列基板12相对设置,包括多个绝缘层(例如第一基板111);
其中,在所述阵列基板12和/或所述彩膜基板11中,位于所述功能区132的不同折射率的相邻绝缘层形成的反射界面的数量,大于位于所述显示区131的不同折射率的相邻反射界面的数量,所述反射界面两侧的相邻绝缘层的折射率的差值的绝对值大于或者等于第一预设阈值。
本申请实施例提供一种液晶显示面板,通过使阵列基板和/或彩膜基板中,位于功能区的不同折射率的相邻绝缘层形成的反射界面的数量,大于位于显示区的不同折射率的相邻反射界面的数量,由于液晶显示面板的反射率由各个膜层的反射率叠加,本申请在不影响红外光学透过率的状况下,通过使功能区的反射界面的数量大于显示区的反射界面的数量,相较于显示区提高了功能区的光线的反射率,从而减小甚至消除了全黑显示时功能区和显示区的亮度差异。
需要说明的是,在本申请实施例中,绝缘层是指不包括金属层(例如栅极层)、ITO(氧化铟锡)或者其他导电材料形成的公共电极层和像素电极层、以及半导体有源层的无机膜层和有机膜层,具体的,黑色矩阵由于吸光作用,因此,本申请实施例限定的绝缘层不包括黑色矩阵。
需要说明的是,反射界面是指不同折射率的相邻绝缘层之间反射可见光线的界面,且反射界面两侧的相邻绝缘层的折射率的差值的绝对值大于或等于第一预设阈值。例如在显示区内,如图1所示,第一基板111和色阻层113的折射率的差值的绝对值大于或等于第一预设阈值,第一基板111和色阻层113之间的界面为一个反射界面,而黑色矩阵115会吸收光线,不会反射光线,因此黑色矩阵115和第一基板111之间界面不是反射界面,同时,色阻层113与保护层114的折射率的差值的绝对值大于或等于第一预设阈值,色阻层113和保护层114之间的界面为反射界面,而支撑柱116设置在黑色矩阵115对应的区域,无光线或者较少的光线会发散到支撑柱116和保护层114之间,反射较少甚至没有,且支撑柱116是间隔设置,无完整界面,进一步减少了反射光线甚至没有反射光线,因此,支撑柱和保护层之间无反射界面。从上述分析可以知道,在当前液 晶显示面板中,在彩膜基板上,位于显示区的反射界面的数量为2。
需要说明的是,第一预设阈值是指相邻两个膜层的折射率大于一个阈值时,相邻两侧膜层之间的界面才会产生反射或者较大的发射,则此时相邻两个绝缘层之间的界面才能作为反射界面,例如,色阻层会包括透过不同颜色的光线的多个色阻,但透过不同颜色的光线的多个色阻之间的折射率的差距较小甚至相同,例如小于或等于0.01,此时,两层色阻之间的界面对光线的反射基本没有,因此,会将两层色阻作为一个整体,而不是将两层设置之间的界面作为反射界面,因此,相邻绝缘层的折射率的差值的绝对值大于或者等于第一预设阈值时,例如为大于或者等于0.1时(在实际应用中,也可以选择0.1、0.2、0.3、0、4、0.5等),相邻绝缘层之间的界面为反射界面,而在相邻绝缘层的折射率差值的绝对值小于或等于第二预设阈值,相邻绝缘层可以视作一个整体,而相邻绝缘层的折射率差值的绝对值位于第二预设阈值和第一预设阈值时,相邻绝缘层之间的界面不视为反射界面。
需要说明的是,如图2所示,液晶显示器件包括多个绝缘层:第一膜层21、第二膜层22和第三膜层23,在外界光24照射至液晶显示器件时,以第一膜层21的折射率为n1,第二膜层22的折射率为n2,第三膜层23的折射率为n3,则外界光24在第一膜层21和第二膜层22之间的界面的反射率R1=(n2-n1) 2/(n2+n1) 2,外界光24在第二膜层22和第三膜层23之间的界面的反射率R2=(n3-n2) 2/(n3+n2) 2,液晶显示器件的外界光的反射率R=R1+R2。
从上述分析可以知道,本申请实施例通过在阵列基板和/或彩膜基板中,使功能区中的绝缘层形成的反射界面的数量大于显示区的绝缘层形成的反射界面的数量,则提高了液晶显示面板的功能区的对外界环境光的反射率,从而缩小功能区和显示区对外界环境光的光线反射率的差距,提高了液晶显示面板的全黑显示时的亮度均一性。
需要说明的是,在本申请实施例中,相较于当前屏下摄像头的设计方案,由于当前屏下摄像头区域需要透过可见光,实现摄像功能,因此会对屏下摄像头设置区进行挖孔,去除有机层和无机层,因此会导致屏下摄像头设置区对外界环境光的光线的反射率和显示区的光线的反射率不同。本申请考虑到红外摄像头需要收集的是红外光,而色阻等膜层对红外光的透过率较高,因此,可以 在功能区增加色阻等膜层,而不会影响红外光的透过,且缩小了功能区与显示区的反射光线的差距,提高液晶显示面板全黑显示时的亮度均一性。
在一种实施例中,在所述彩膜基板中,位于所述功能区的不同折射率的相邻绝缘层形成的反射界面的数量,大于位于所述显示区的不同着手里的相邻绝缘层形成的反射界面的数量。在液晶显示面板中,当前液晶显示面板为了提高屏下摄像头设置区的光线透过率,回去除彩膜基板中的色阻和黑色矩阵,通过其他膜层平坦屏下摄像头设置区的彩膜基板,因此,本申请实施例对彩膜基板进行设计,在去除的色阻和黑色矩阵形成的空间内设置绝缘层,增加功能区的不同折射率的相邻绝缘层形成的反射界面,使位于功能区的不同折射率的相邻绝缘层形成的反射界面的数量,大于位于显示区的不同折射率的相邻绝缘层形成的反射界面的数量,从而提高功能区的光线反射率,缩小功能区和显示区的光线反射率的差距,提高液晶显示面板全黑显示时的均一性。
在一种实施例中,如图1所示,在所述彩膜基板11中,多个所述绝缘层包括第一基板111和保护层114,在所述第一基板111靠近所述保护层114的一侧和所述第一基板111远离所述保护层114的一侧的至少一个中,位于所述功能区132的不同折射率的相邻绝缘层形成的反射界面的数量,大于位于所述显示区131的不同折射率的相邻绝缘层形成的反射界面的数量。通过在第一基板的两侧中的至少一侧增加反射界面的数量,使功能区的反射率增加,缩小功能区和显示区的反射率的差距,从而提高液晶显示面板全黑显示时的亮度均一性。
具体的,以图1为例,在第一无机层112a和第二无机层112b与相邻膜层的折射率不同时,功能区的反射界面包括4个,而显示区的反射界面包括2个,则功能区的不同折射率的绝缘层的反射界面的数量大于显示区的不同折射率的绝缘层的反射界面的数量,增加了的功能区的反射率,缩小功能区和显示区的反射率的差距,从而提高液晶显示面板全黑显示时的亮度均一性。
针对当前显示器件会在屏下摄像头设置区挖除色阻和黑色矩阵导致屏下摄像头设置区的反射界面较少的问题。在一种实施例中,如图1所示,所述彩膜基板11还包括:设置在所述第一基板111和所述保护层114之间的黑色矩阵115,所述黑色矩阵115在所述功能区132设置有对应的第一开口,所述第一开口至少覆盖所述功能区132;
在所述彩膜基板11中,多个所述绝缘层还包括:设置在所述功能区132且位于所述第一基板111和所述保护层114之间的透红外光层112,所述透红外光层112与相邻的所述绝缘层之间的折射率差值的绝对值大于或者等于所述第一预设阈值。在功能区去除黑色矩阵时,在功能区,通过在第一基板和保护层之间的空间形成透红外光层,使透红外光层与相邻的绝缘层之间的折射率差值的绝对值大于或者等于第一预设阈值,则增加了第一基板至保护层之间反射界面的数量,提高了功能区的反射率,缩小功能区和显示区的反射率的差距,从而提高液晶显示面板全黑显示时的亮度均一性,且由于增加的透红外光层设置于第一基板和保护层之间,不会增加液晶显示面板的厚度。
在一种实施例中,如图1所示,所述液晶显示面板1包括多个设置在所述显示区的显示像素,所述黑色矩阵115在对应所述显示像素设置有第二开口;
多个所述绝缘层还包括:设置所述第一开口和所述第二开口处的色阻层113,所述色阻层113与相邻的所述绝缘层之间的折射率差值的绝对值大于或等于所述第一预设阈值;
所述透红外光层112设置在所述色阻层113和所述第一基板111之间,或者,如图3所示,所述透红外光层112设置在所述色阻层113和所述保护层114之间。在液晶显示面板中,会在显示区设置色阻层,而本申请实施例考虑到色阻对红外光的透过率较高,因此,可以在显示区形成色阻层时,同时形成功能区的色阻层,增加功能区的反射界面的数量,提高了功能区的反射率,缩小功能区和显示区的反射率的差距,从而提高液晶显示面板全黑显示时的亮度均一性,且该设置方式无需增加液晶显示面板的工艺,也无需增加液晶显示面板的厚度。
具体的,透红外光层设置在色阻层和第一基板之间,则在功能区,可以通过第一基板与透红外层之间形成反射界面,色阻层和透红外光层之间形成反射界面,色阻层和保护层之间形成反射界面,从而增加功能区的反射界面,缩小功能区和显示区的反射率的差距,从而提高液晶显示面板全黑显示时的亮度均一性。
具体的,透红外光层设置在色阻层和保护层之间,则在功能区,可以通过第一基板与色阻层之间形成反射界面,色阻层和透红外光层之间形成反射界面,透红外光层和保护层之间形成反射界面,从而增加功能区的反射界面,缩 小功能区和显示区的反射率的差距,从而提高液晶显示面板全黑显示时的亮度均一性。在实际应用中,透红外光层可以选择折射率为1.5的氧化硅薄膜和折射率为1.85的氮化硅薄膜,也可以根据实际需求来定,这里不做限制。
针对透过单个颜色的色阻层设置在功能区时,无法对可见光进行阻挡,会导致功能区出现漏光的问题。在一种实施例中,如图3所示,在所述显示区131,所述色阻层113包括:多个与显示像素对应颜色的色阻块(例如红色色阻块113a、绿色色阻块113b、蓝色色阻块113c);
在所述功能区132,所述色阻层113包括:层叠设置的至少两层透过不同颜色的色阻子层113d(例如包括红色色阻子层211、蓝色色阻子层212),透过不同颜色的色阻子层113d的折射率差值的绝对值小于或等于第二预设阈值,所述第二预设阈值小于所述第一预设阈值。由于透过不同颜色的色阻子层的材料相近,折射率相近,在光线的反射上,两者之间的界面对光线的反射率较低,因此,可以将两者作为一个整体,且折射率也可以看做一个整体,两者之间的界面不作为反射界面,而通过在功能区设置多层色阻子层,在不增加液晶显示面板的工艺时,可以提高对可见光的阻挡,避免可见光功能区漏光。
为了进一步提高功能区的反射率,提高液晶显示面板全黑显示时的亮度均一性。在一种实施例中,如图1所示,所述透红外光层112包括:层叠设置的第一无机层112a和第二无机层112b;
所述第一无机层112a与相邻的所述绝缘层之间的折射率差值的绝对值大于或等于所述第一预设阈值;
所述第二无机层112b与相邻的所述绝缘层之间的折射率差值的绝对值大于或等于所述第一预设阈值。通过将透红外光层设置为第一无机层和第二无机层,并使得第一无机层和第二无机层均与相邻的绝缘层之间的折射率差值的绝对值大于或者等于第一预设阈值,进一步提高了反射界面的数量,缩小功能区和显示区的反射率的差距,从而提高液晶显示面板全黑显示时的亮度均一性。
具体的,如图1所示,所述第一无机层112a设置于所述第一基板111和所述第二无机层112b之间,所述第一无机层112a折射率大于所述第一基板111的折射率,所述第一无机层112a的折射率大于所述第二无机层112b的折射率,所述第二无机层的折射率小于所述色阻层113的折射率,且相邻绝缘层之间的 折射率差值的绝对值大于或等于所述第一预设阈值。通过设定功能区的绝缘层的折射率高低交错,使在相邻的两个绝缘膜层中,两个绝缘层的折射率相差较大,且不会使得单一膜层的折射率过大,导致对光线的反射过大,且增加了反射界面的数量,缩小功能区和显示区的反射率的差距,从而提高液晶显示面板全黑显示时的亮度均一性。
上述实施例以透红外光层中的第一无机层和第二无机层设置于第一基板和色阻层之间为例进行了详细说明,但本申请实施例不限于此,第一无机层和第二无机层还可以分开设置或者相邻设置在其他位置。
上述实施例对色阻层加透红外光层增加反射界面的方式进行了详细说明,但本申请实施例不限于此,例如仅设置透红外光层,使透红外光层包括多个膜层,且多个膜层中任意一个与相邻的所述绝缘层之间的折射率差值的绝对值大于或等于所述第一预设阈值,或者设置多个透红外光层,使各透红外光层与相邻的所述绝缘层之间的折射率差值的绝对值大于或等于所述第一预设阈值。
上述实施例以在第一基板和保护层之间增加反射界面为例进行了详细说明,但本申请实施例不限于此。在一种实施例中,如图4所示,在所述彩膜基板11中,多个所述绝缘层还包括:设置在所述第一基板111远离所述保护层114的一侧的高阻层311;
所述高阻层311包括:位于所述功能区132的第一高阻区311a和位于所述显示区131的第二高阻区311b,所述高阻层311在所述第一高阻区311a和所述第二高阻区311b的折射率不同;
所述高阻层311在所述第一高阻区311a的折射率与所述第一基板111的折射率差值的绝对值大于或等于所述第一预设阈值;
所述高阻层311在所述第二高阻区311b的折射率与所述第一基板111的折射率差值的绝对值小于或等于第二预设阈值,所述第二预设阈值小于所述第一预设阈值。通过在第一基板远离保护层的一侧设置高阻层,并使高阻层的第一个高阻区与第一基板的折射率差值的绝对值大于或等于所述第一预设阈值、第二高阻区第一基板的折射率差值的绝对值小于或等于第二预设阈值,则增加了功能区的反射界面的数量,同时对显示区进行平坦,缩小功能区和显示区的反射率的差距,从而提高液晶显示面板全黑显示时的亮度均一性。
在一种实施例中,如图1、图4所示,所述液晶显示面板1还包括:设置在所述阵列基板12远离所述彩膜基板11一侧的第一偏光片14、和设置在所述彩膜基板11远离所述阵列基板12一侧的第二偏光片15;
所述高阻层311设置在所述第一基板111和所述第二偏光片15之间。通过将高阻层设置在第一基板和第二偏光片之间,避免对高阻层产生损伤。
具体的,高阻层的第一高阻区和第二高阻区的折射率差异可以通过掺杂的方式形成。
上述实施例以高阻层的第一高阻区和第二高阻的折射率不同为例进行了详细说明,但本申请实施例不限于此,还可以通过分别在功能区和显示区形成不同折射率的高阻层。
上述实施例以高阻层设置于第一基板和第二偏光片之间为例进行了详细说明,但本申请实施例不限于此,高阻层还可以设置在第二偏光片远离第一基板的一侧。
在一种实施例中,如图1所示,所述阵列基板12还包括金属导电层(例如第一电极层126、第二电极层128),所述金属导电层在所述功能区132设置有对应的第三开口,所述第三开口至少覆盖所述功能区132。通过在功能区去除金属层,提高功能区的红外光透过率。
针对现有液晶显示器件会将阵列基板位于功能区的膜层进行挖孔,以提高光线透过率,导致功能区和显示区的光线的反射率差异所导致的亮度不均。在一种实施例中,如图1所示,在所述阵列基板12中,多个所述绝缘层还包括:依次层叠在所述第二基板121和所述钝化层127之间的缓冲层122、栅极绝缘层123、层间绝缘层124、平坦化层125,所述缓冲层122从所述显示区131延伸至所述功能区132,所述栅极绝缘层123从所述显示区131延伸至所述功能区132,所述层间绝缘层124从所述显示区131延伸至所述功能区132;
所述金属导电层包括:设置在所述钝化层127两侧的第一电极层126和第二电极层128,所述钝化层127在所述功能区132与所述平坦化层125直接接触。针对当前液晶显示面板会去除功能区的膜层,导致功能区的反射率较低,本申请通过保留或者增加功能区的膜层,提高功能区的反射界面的数量,提高功能区的反射率,缩小功能区和显示区的反射率的差距,从而提高液晶显示面 板全黑显示时的亮度均一性。
需要说明的是,由于显示区的钝化层和平坦化层至少大部分区域没有直接接触,因此,功能区的相邻绝缘层形成的反射界面的数量,大于显示区的相邻绝缘层形成的反射界面的数量。
在一种实施例中,在阵列基板中,在所述钝化层和所述第二基板之间和/或所述钝化层远离所述第二基板的一侧,和/或所述第二基板远离所述钝化层的一侧,多个所述绝缘层还包括透过层,透过层与相邻的所述绝缘层之间的折射率差值的绝对值大于或等于所述第一预设阈值。即通过在阵列基板中增加透过层,进一步增加功能区的反射界面的数量,从而提高功能区的反射率,缩小功能区和显示区的反射率的差距,从而提高液晶显示面板全黑显示时的亮度均一性。
具体的,以下表说明本申请实施例的功能区的反射率的理论数据。
表一:阵列基板的各反射界面的反射率
Figure PCTCN2021133121-appb-000001
需要说明的是,第二基板自身不会形成反射界面,因此,第二基板与缓冲层中氮化硅层形成的反射界面的反射率记载在缓冲层中氮化硅层一栏,其他反射率的数值表示的反射界面如上所述。从上表一中可以知道,在功能区,相较于现有去除膜层后阵列基板侧功能区的反射率为2.31%,本申请将反射率提升至6.28%,提高了功能区的反射率。需要说明的是,栅极绝缘层和缓冲层中的 氧化硅层之间的折射率差异不太大(为0.04),小于第一预设阈值(大于或等于0.1),它们之间的接触面对外界环境光的反射率贡献较小,可不将它们之间的接触面算成前文所述的反射界面。
表二:彩膜基板的各反射界面的反射率
Figure PCTCN2021133121-appb-000002
需要说明的是,第一基板自身不会形成反射界面,因此,第一基板与透红外光层中氮化硅层形成的反射界面的反射率记载在透红外光层中氮化硅层一栏,其他反射率的数值表示的反射界面如上所述。从上表二中可以知道,在功能区,相较于现有去除膜层后彩膜基板侧功能区的反射率为0.78%,本申请将反射率提升至2.90%,提高了功能区对外界环境光的反射率。
同时,如图5所示,本申请实施例提供一种车载液晶显示装置,该车载液晶显示装置包括:
液晶显示面板,包括显示区131和透射红外光线的功能区132,所述液晶显示面板包括阵列基板12和彩膜基板11,所述阵列基板12包括多个绝缘层(例如第二基板121),所述彩膜基板11与所述阵列基板12相对设置,包括多个绝缘层(例如第一基板111),其中,在所述阵列基板12和/或所述彩膜基板11中,位于所述功能区132的不同折射率的相邻绝缘层形成的反射界面的数量,大于位于所述显示区131的不同折射率的相邻反射界面的数量,所述反射界面两侧的相邻绝缘层的折射率的差值的绝对值大于或者等于第一预设阈值;
红外摄像头41,设置于所述阵列基板12远离所述彩膜基板11的一侧,且所述红外摄像头41设置于所述功能区132;
背光模组(附图未显示),设置在阵列基板12远离彩膜基板11的一侧,背光模组对应功能区132可以设置开孔,红外摄像头41可插设在背光模组的开孔中。
需要说明的是,该车载液晶显示装置中所用的液晶显示面板为前文所述的液晶显示面板,其具体结构前文已详细描写,这里不在赘述。
根据以上实施例可知:
本申请实施例提供一种液晶显示面板和车载液晶显示装置;该液晶显示面板包括显示区和透射红外光线的功能区,液晶显示面板包括阵列基板和彩膜基板,阵列基板包括多个绝缘层,彩膜基板与阵列基板相对设置,包括多个绝缘层,其中,在阵列基板和/或彩膜基板中,位于功能区的不同折射率的相邻绝缘层形成的反射界面的数量,大于位于显示区的不同折射率的相邻反射界面的数量,反射界面两侧的相邻绝缘层的折射率的差值的绝对值大于或者等于第一预设阈值。本申请通过使阵列基板和/或彩膜基板中,位于功能区的不同折射率的相邻绝缘层形成的反射界面的数量,大于位于显示区的不同折射率的相邻反射界面的数量,由于液晶显示面板的反射率由各个膜层的反射率叠加,本申请在不影响红外光学透过率的状况下,通过使功能区的反射界面的数量大于显示区的反射界面的数量,相较于显示区提高了功能区的光线的反射率,从而减小甚至消除了全黑显示时功能区和显示区的亮度差异。
在上述实施例中,对各个实施例的描述都各有侧重,某个实施例中没有详述的部分,可以参见其他实施例的相关描述。
以上对本申请实施例所提供的一种液晶显示面板和车载液晶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 (20)

  1. 一种液晶显示面板,其包括显示区和透射红外光线的功能区,所述液晶显示面板包括:
    阵列基板,包括多个绝缘层;
    彩膜基板,与所述阵列基板相对设置,包括多个绝缘层;
    其中,在所述阵列基板和/或所述彩膜基板中,位于所述功能区的不同折射率的相邻绝缘层形成的反射界面的数量,大于位于所述显示区的不同折射率的相邻反射界面的数量,所述反射界面两侧的相邻绝缘层的折射率的差值的绝对值大于或者等于第一预设阈值。
  2. 如权利要求1所述的液晶显示面板,其中,在所述彩膜基板中,多个所述绝缘层包括第一基板和保护层,在所述第一基板靠近所述保护层的一侧和所述第一基板远离所述保护层的一侧的至少一个中,位于所述功能区的不同折射率的相邻绝缘层形成的反射界面的数量,大于位于所述显示区的不同折射率的相邻绝缘层形成的反射界面的数量。
  3. 如权利要求2所述的液晶显示面板,其中,所述彩膜基板还包括:
    设置在所述第一基板和所述保护层之间的黑色矩阵,所述黑色矩阵在所述功能区设置有对应的第一开口,所述第一开口至少覆盖所述功能区;
    在所述彩膜基板中,多个所述绝缘层还包括:设置在所述功能区且位于所述第一基板和所述保护层之间的透红外光层,所述透红外光层与相邻的所述绝缘层之间的折射率差值的绝对值大于或等于所述第一预设阈值。
  4. 如权利要求3所述的液晶显示面板,其中,所述液晶显示面板包括多个设置在所述显示区的显示像素,所述黑色矩阵在对应所述显示像素设置有第二开口;
    多个所述绝缘层还包括:设置所述第一开口和所述第二开口处的色阻层,所述色阻层与相邻的所述绝缘层之间的折射率差值的绝对值大于或等于所述第一预设阈值,
    所述透红外光层设置在所述色阻层和所述第一基板之间,或者,所述透红外光层设置在所述色阻层和所述保护层之间。
  5. 如权利要求4所述的液晶显示面板,其中,在所述显示区,所述色阻 层包括:多个与显示像素对应颜色的色阻块;
    在所述功能区,所述色阻层包括:层叠设置的至少两层透过不同颜色的色阻子层,透过不同颜色的色阻子层的折射率差值的绝对值小于或等于第二预设阈值,所述第二预设阈值小于所述第一预设阈值。
  6. 如权利要求3所述的液晶显示面板,其中,所述透红外光层包括:层叠设置的第一无机层和第二无机层,
    所述第一无机层与相邻的所述绝缘层之间的折射率差值的绝对值大于或等于所述第一预设阈值;
    所述第二无机层与相邻的所述绝缘层之间的折射率差值的绝对值大于或等于所述第一预设阈值。
  7. 如权利要求2所述的液晶显示面板,其中,在所述彩膜基板中,多个所述绝缘层还包括:设置在所述第一基板远离所述保护层的一侧的高阻层,
    所述高阻层包括:位于所述功能区的第一高阻区和位于所述显示区的第二高阻区,所述高阻层在所述第一高阻区和所述第二高阻区的折射率不同;
    所述高阻层在所述第一高阻区的折射率与所述第一基板的折射率差值的绝对值大于或等于所述第一预设阈值;
    所述高阻层在所述第二高阻区的折射率与所述第一基板的折射率差值的绝对值小于或等于第二预设阈值,所述第二预设阈值小于所述第一预设阈值。
  8. 如权利要求7所述的液晶显示面板,其中,所述液晶显示面板还包括:设置在所述阵列基板远离所述彩膜基板一侧的第一偏光片、和设置在所述彩膜基板远离所述阵列基板一侧的第二偏光片,
    所述高阻层设置在所述第一基板和所述第二偏光片之间。
  9. 如权利要求1所述的液晶显示面板,其中,在所述阵列基板中,多个所述绝缘层包括:第二基板和钝化层,在所述第二基板靠近所述钝化层的一侧和所述第二基板远离所述钝化层的一侧中的至少一个,位于所述功能区的不同折射率的相邻绝缘层形成的反射界面的数量,大于位于所述显示区的不同折射率的相邻绝缘层形成的反射界面的数量。
  10. 如权利要求9所述的液晶显示面板,其中,所述阵列基板还包括金属导电层,所述金属导电层在所述功能区设置有对应的第三开口,所述第三开口 至少覆盖所述功能区。
  11. 如权利要求10所述的液晶显示面板,其中,在所述阵列基板中,多个所述绝缘层还包括:依次层叠在所述第二基板和所述钝化层之间的缓冲层、栅极绝缘层、层间绝缘层,所述缓冲层从所述显示区延伸至所述功能区,所述栅极绝缘层从所述显示区延伸至所述功能区,所述层间绝缘层从所述显示区延伸至所述功能区;
    所述金属导电层包括:设置在所述钝化层两侧的第一电极层和第二电极层,所述钝化层在所述功能区与所述平坦化层直接接触。
  12. 一种车载液晶显示装置,其包括:
    液晶显示面板,包括显示区和透射红外光线的功能区,所述液晶显示面板包括阵列基板和彩膜基板,所述阵列基板包括多个绝缘层,所述彩膜基板与所述阵列基板相对设置,包括多个绝缘层,其中,在所述阵列基板和/或所述彩膜基板中,位于所述功能区的不同折射率的相邻绝缘层形成的反射界面的数量,大于位于所述显示区的不同折射率的相邻反射界面的数量,所述反射界面两侧的相邻绝缘层的折射率的差值的绝对值大于或者等于第一预设阈值;
    红外摄像头,设置于所述阵列基板远离所述彩膜基板的一侧,且所述红外摄像头设置于所述功能区。
  13. 如权利要求12所述的车载液晶显示装置,其中,在所述彩膜基板中,多个所述绝缘层包括第一基板和保护层,在所述第一基板靠近所述保护层的一侧和所述第一基板远离所述保护层的一侧的至少一个中,位于所述功能区的不同折射率的相邻绝缘层形成的反射界面的数量,大于位于所述显示区的不同折射率的相邻绝缘层形成的反射界面的数量。
  14. 如权利要求13所述的车载液晶显示装置,其中,所述彩膜基板还包括:
    设置在所述第一基板和所述保护层之间的黑色矩阵,所述黑色矩阵在所述功能区设置有对应的第一开口,所述第一开口至少覆盖所述功能区;
    在所述彩膜基板中,多个所述绝缘层还包括:设置在所述功能区且位于所述第一基板和所述保护层之间的透红外光层,所述透红外光层与相邻的所述绝缘层之间的折射率差值的绝对值大于或等于所述第一预设阈值。
  15. 如权利要求14所述的车载液晶显示装置,其中,所述液晶显示面板包括多个设置在所述显示区的显示像素,所述黑色矩阵在对应所述显示像素设置有第二开口;
    多个所述绝缘层还包括:设置所述第一开口和所述第二开口处的色阻层,所述色阻层与相邻的所述绝缘层之间的折射率差值的绝对值大于或等于所述第一预设阈值,
    所述透红外光层设置在所述色阻层和所述第一基板之间,或者,所述透红外光层设置在所述色阻层和所述保护层之间。
  16. 如权利要求15所述的车载液晶显示装置,其中,在所述显示区,所述色阻层包括:多个与显示像素对应颜色的色阻块;
    在所述功能区,所述色阻层包括:层叠设置的至少两层透过不同颜色的色阻子层,透过不同颜色的色阻子层的折射率差值的绝对值小于或等于第二预设阈值,所述第二预设阈值小于所述第一预设阈值。
  17. 如权利要求14所述的车载液晶显示装置,其中,所述透红外光层包括:层叠设置的第一无机层和第二无机层,
    所述第一无机层与相邻的所述绝缘层之间的折射率差值的绝对值大于或等于所述第一预设阈值;
    所述第二无机层与相邻的所述绝缘层之间的折射率差值的绝对值大于或等于所述第一预设阈值。
  18. 如权利要求13所述的车载液晶显示装置,其中,在所述彩膜基板中,多个所述绝缘层还包括:设置在所述第一基板远离所述保护层的一侧的高阻层,
    所述高阻层包括:位于所述功能区的第一高阻区和位于所述显示区的第二高阻区,所述高阻层在所述第一高阻区和所述第二高阻区的折射率不同;
    所述高阻层在所述第一高阻区的折射率与所述第一基板的折射率差值的绝对值大于或等于所述第一预设阈值;
    所述高阻层在所述第二高阻区的折射率与所述第一基板的折射率差值的绝对值小于或等于第二预设阈值,所述第二预设阈值小于所述第一预设阈值。
  19. 如权利要求18所述的车载液晶显示装置,其中,所述液晶显示面板 还包括:设置在所述阵列基板远离所述彩膜基板一侧的第一偏光片、和设置在所述彩膜基板远离所述阵列基板一侧的第二偏光片,
    所述高阻层设置在所述第一基板和所述第二偏光片之间。
  20. 如权利要求12所述的车载液晶显示装置,其中,在所述阵列基板中,多个所述绝缘层包括:第二基板和钝化层,在所述第二基板靠近所述钝化层的一侧和所述第二基板远离所述钝化层的一侧中的至少一个,位于所述功能区的不同折射率的相邻绝缘层形成的反射界面的数量,大于位于所述显示区的不同折射率的相邻绝缘层形成的反射界面的数量。
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