WO2020062413A1 - 液晶显示装置 - Google Patents

液晶显示装置 Download PDF

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Publication number
WO2020062413A1
WO2020062413A1 PCT/CN2018/113264 CN2018113264W WO2020062413A1 WO 2020062413 A1 WO2020062413 A1 WO 2020062413A1 CN 2018113264 W CN2018113264 W CN 2018113264W WO 2020062413 A1 WO2020062413 A1 WO 2020062413A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
display device
crystal display
polarizer
thin film
Prior art date
Application number
PCT/CN2018/113264
Other languages
English (en)
French (fr)
Inventor
刘凡成
查国伟
Original Assignee
武汉华星光电技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 武汉华星光电技术有限公司 filed Critical 武汉华星光电技术有限公司
Priority to US16/339,364 priority Critical patent/US20210191193A1/en
Publication of WO2020062413A1 publication Critical patent/WO2020062413A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G02F1/13312—Circuits comprising photodetectors for purposes other than feedback
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G02F1/13318—Circuits comprising a photodetector
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136222—Colour filters incorporated in the active matrix substrate

Definitions

  • the invention relates to a liquid crystal display device, in particular to a liquid crystal display device provided with a sensor in a visible area of a liquid crystal panel.
  • Liquid crystal display devices generally refer to various devices that use liquid crystal panels, such as displays and various mobile devices. Among them, mobile devices are the most expressive of mobile phones.
  • the screen of mobile phones also tends to develop in the direction of large size and large screen proportion.
  • the screen ratio is used to indicate the ratio of the area of the mobile phone screen and the front panel of the mobile phone, and the current screen ratio of mobile phones has gradually increased from about 80% to more than 90%.
  • the front sensor portion of the mobile phone is included in the visible area of the mobile phone screen, that is, the screen ratio is increased by digging holes in the mobile phone screen, thereby increasing the phone The overall craft design aesthetics.
  • FIG. 1 is a schematic partial cross-sectional view of a conventional liquid crystal display device.
  • a conventional liquid crystal display device 100 is, for example, a mobile phone, which mainly includes a liquid crystal panel 110.
  • the liquid crystal panel 110 includes a first transparent substrate 111, a second transparent substrate 112, and a liquid crystal layer 113.
  • the first transparent A plurality of thin film transistors 111a are provided on the substrate 111, a plurality of color resistance units 112a are provided on the second transparent substrate 112, and the liquid crystal layer 113 is filled in the first substrate 111 and the second substrate 112.
  • the package structure Within the package structure.
  • the liquid crystal display device 100 further includes: a first polarizer 120 disposed below the liquid crystal panel 110; a second polarizer 130 disposed above the liquid crystal panel 110; and a backlight module 140 disposed on Below the first polarizer 120; an optical adhesive layer (OCA; Optical Clear Adhesive) 150 is provided above the second polarizer 130; and a transparent cover 160 is provided above the optical adhesive layer 150 .
  • OCA optical Clear Adhesive
  • the liquid crystal display device 100 further includes a sensor 170.
  • the liquid crystal display device 100 is provided with a sensing area A.
  • the first polarizer 120, the second polarizer 130, and the backlight module 140 are respectively provided with openings in the sensing area A, and the sensor 170 is disposed below the openings. Therefore, external light as indicated by the arrow in FIG. 1 can pass through the sensing area A of the liquid crystal display device 100, so that the sensor 170 can perform sensing operations.
  • the sensor 170 is, for example, a camera, a light sensor Sensor, infrared sensor or fingerprint sensor. When the sensor 170 is a camera, photographing or photography can be performed through the sensing area A.
  • the liquid crystal display device 100 regardless of whether the liquid crystal display device 100 is powered on, the user can see the sensor 170 provided below the liquid crystal panel 110 from the outside, so although the liquid crystal display can be increased
  • the screen ratio of the device 100 also affects the overall feeling of the liquid crystal display device 100 to a certain extent.
  • the main object of the present invention is to provide a liquid crystal display device, which includes a sensor disposed in a visible area of a liquid crystal display panel.
  • a liquid crystal display device which includes a sensor disposed in a visible area of a liquid crystal display panel.
  • the present invention provides a liquid crystal display device, including: a liquid crystal panel including a first transparent substrate, a second transparent substrate, and a liquid crystal layer, wherein the liquid crystal layer is filled in the first substrate Within the packaging structure formed with the second substrate, the liquid crystal panel is further provided with a plurality of thin film transistors and a plurality of color resistance units; a first polarizer is disposed under the liquid crystal panel; and a second polarized light A sheet is provided above the liquid crystal panel; wherein the liquid crystal display device further includes a sensing area, and the plurality of thin film transistors are provided within the sensing area; A backlight module is provided below, the backlight module has an opening corresponding to the sensing area; the polarization direction of the first polarizer is perpendicular to the polarization direction of the second polarizer; and the first transparent substrate is provided There are the plurality of thin film transistors and a plurality of pixel units, and the second transparent substrate is provided with the plurality of color resistance units, wherein
  • a sensor is disposed inside or below the opening of the backlight module.
  • the liquid crystal display device has a power-off state and a power-on state.
  • the polarization direction of the first polarizer and The polarization direction of the second polarizer is vertical, so that external light cannot pass through the sensing area of the liquid crystal panel;
  • the plurality of thin film transistors control the The liquid crystal in the liquid crystal layer rotates so that external light passes through the sensing area of the liquid crystal panel.
  • the plurality of pixel units are arranged in an array, and the thin film transistor is disposed between the plurality of pixel units driven by the plurality of pixel units.
  • the plurality of pixel units are arranged in a row, and the thin film transistor is disposed on one side of the plurality of pixel units driven by the plurality of pixel units.
  • the liquid crystal panel further includes a frame region, and the thin film transistor is located in the frame region.
  • the first transparent substrate is an array substrate
  • the second transparent substrate is a color filter substrate
  • the liquid crystal display device further includes a transparent cover, and the transparent cover is attached to the second polarizer through an optical adhesive layer.
  • the present invention further provides a liquid crystal display device, which includes: a liquid crystal panel including a first transparent substrate, a second transparent substrate, and a liquid crystal layer, wherein the liquid crystal layer is filled in the first Within the packaging structure formed by the substrate and the second substrate, the liquid crystal panel is provided with a plurality of thin film transistors and a plurality of color resistance units; a first polarizer is disposed under the liquid crystal panel; and a second A polarizer is disposed above the liquid crystal panel; wherein the liquid crystal display device further includes a sensing region, and the plurality of thin film transistors are disposed within the sensing region; and the first polarized light A backlight module is disposed below the sheet, and the backlight module has an opening corresponding to the sensing area.
  • the polarization direction of the first polarizer is perpendicular to the polarization direction of the second polarizer.
  • a sensor is disposed inside or below the opening of the backlight module.
  • the liquid crystal display device has a power-off state and a power-on state.
  • the polarization direction of the first polarizer and The polarization direction of the second polarizer is vertical, so that external light cannot pass through the sensing area of the liquid crystal panel;
  • the plurality of thin film transistors control the The liquid crystal in the liquid crystal layer rotates so that external light passes through the sensing area of the liquid crystal panel.
  • the first transparent substrate is provided with the plurality of thin film transistors and a plurality of pixel units
  • the second transparent substrate is provided with the plurality of color resistance units, wherein In the sensing region, one of the thin film transistors is used to drive one or more pixel units.
  • the plurality of pixel units are arranged in an array, and the thin film transistor is disposed between the plurality of pixel units driven by the plurality of pixel units.
  • the plurality of pixel units are arranged in a row, and the thin film transistor is disposed on one side of the plurality of pixel units driven by the plurality of pixel units.
  • the liquid crystal panel further includes a frame region, and the thin film transistor is located in the frame region.
  • the first transparent substrate is an array substrate
  • the second transparent substrate is a color filter substrate
  • the liquid crystal display device further includes a transparent cover, and the transparent cover is attached to the second polarizer through an optical adhesive layer.
  • the liquid crystal display device is not provided with the plurality of color resistance units within the sensing area, and because of the The polarization direction is perpendicular to the polarization direction of the second polarizer.
  • the liquid crystal display device is in the non-powered state, the user cannot see the sensor provided below the liquid crystal panel from the outside, and when the When the liquid crystal display device is in the power-on state, a user can see the sensor provided below the liquid crystal panel from the outside.
  • FIG. 1 is a schematic partial cross-sectional view of a conventional liquid crystal display device.
  • FIG. 2 is a schematic partial cross-sectional view of a liquid crystal display device according to an embodiment of the invention.
  • FIG. 3 is a schematic top view of a sensing area according to another embodiment of the present invention.
  • FIG. 4 is a schematic top view of a sensing area according to another embodiment of the present invention.
  • FIG. 2 is a schematic partial cross-sectional view of a liquid crystal display device according to an embodiment of the present invention.
  • a liquid crystal display device 200 of the present invention is, for example, a mobile phone, which mainly includes a liquid crystal panel 210.
  • the liquid crystal panel 210 includes a first transparent substrate 211, a second transparent substrate 212, and a liquid crystal layer 213.
  • the layer 213 is filled in a package structure formed by the first substrate 211 and the second substrate 212.
  • the first transparent substrate 211 is, for example, an array substrate
  • the second transparent substrate 212 is, for example, a color filter substrate
  • a plurality of thin film transistors 211 a are provided on the first transparent substrate 211.
  • a plurality of color resist units 212a are provided on the second transparent substrate 212.
  • the present invention is not limited to this.
  • the plurality of thin film transistors 211a may be provided on the second transparent substrate 212, and the plurality of color resistance units 212a may also be It is disposed on the first transparent substrate 211.
  • the liquid crystal display device 200 further includes: a first polarizer 220 disposed below the liquid crystal panel 210; a second polarizer 230 disposed above the liquid crystal panel 210; and a backlight module 240 disposed on Below the first polarizer 220; an optical adhesive layer (OCA; Optical Clear Adhesive) 250 is disposed above the second polarizer 230; and a transparent cover plate 260 is disposed above the optical adhesive layer 250 .
  • OCA Optical Clear Adhesive
  • the polarization direction of the first polarizer 220 is perpendicular to the polarization direction of the second polarizer 230
  • the transparent cover 260 is, for example, a glass cover, which is attached to the optical cover through the optical adhesive layer.
  • Above the second polarizer 230 Above the second polarizer 230.
  • the liquid crystal display device 200 further includes a sensor 270.
  • the liquid crystal display device 200 is provided with a sensing area B.
  • An opening is correspondingly provided in the backlight module 240 in the sensing area B, and the sensor 270 is disposed inside or below the opening of the backlight module 240.
  • the liquid crystal display device 200 does not include the plurality of color resist units 212a within the sensing area B.
  • the polarization direction of the first polarizer 220 is perpendicular to the polarization direction of the second polarizer 230 and there is no hole in the sensing area B as in the prior art, when the liquid crystal When the display device 200 is in a power-off state, external light cannot pass through the sensing area B of the liquid crystal panel 210. Conversely, when the liquid crystal display device 200 is in an energized state, the plurality of thin film transistors 211a on the first transparent substrate 211 can control the liquid crystal rotation in the liquid crystal layer 213, so that external light can be emitted. Passes through the sensing area B of the liquid crystal panel 210.
  • the liquid crystal display device 220 when the liquid crystal display device 220 is in the non-powered state, the user cannot see the sensor 270 provided under the liquid crystal panel 210 from the outside, and when the liquid crystal display device 220 is in the Only when the user is in the power-on state, the user can see the sensor 270 provided below the liquid crystal panel 210 from the outside, that is, external light as indicated by the arrow in FIG. 2 can pass through the liquid crystal display device 200.
  • the sensing area B enables the sensor 270, such as a camera, to perform photographing or photographing work.
  • FIG. 3 is a schematic top view of a sensing area according to another embodiment of the present invention.
  • a thin film transistor 211a is used to drive four pixel units 211b.
  • the plurality of pixel units 211b are arranged in an array, and the thin film transistor 211a is disposed between four pixel units 211b driven by the thin film transistor 211a. Therefore, in this embodiment, the number of the thin film transistors 211a in the sensing area B can be reduced, and the amount of light incident can be further increased by increasing the aperture ratio of the sensing area B.
  • the present invention is not limited to this, the thin film transistor 211a can be selectively used to drive one to N pixel units 211b.
  • FIG. 4 is a schematic top view of a sensing area according to another embodiment of the present invention.
  • the liquid crystal display device 200 and the sensing area B of this embodiment are substantially similar to the above embodiment, so the same component names are used, but the difference is that in this embodiment, a plurality of pixel units 211b are arranged in a row, a plurality of The thin film transistor 211a is disposed on one side of the plurality of pixel units 211b driven by the thin film transistor 211a. Since the liquid crystal panel 210 further includes a frame region C, the thin film transistor 211a may be located in the frame region C.
  • the number of the thin film transistors 211a in the sensing area B can be reduced, and the sensing area B can be improved by moving the thin film transistors 211a to the frame area C of the liquid crystal panel 210. Opening rate.
  • the liquid crystal display device 200 does not include the plurality of color resistance units 212a within the sensing area B, and because the first A polarization direction of a polarizer 220 is perpendicular to a polarization direction of the second polarizer 230. Therefore, when the liquid crystal display device 220 is in the non-powered state, a user cannot see the liquid crystal panel 210 provided from the outside.

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

Abstract

本发明公开一种液晶显示装置，其主要包含一液晶面板、一第一偏光片、一第二偏光片及一背光模块，其中所述第一偏光片设于所述液晶面板的下方；所述第二偏光片设于所述液晶面板的上方；及所述背光模块设于所述第一偏光片的下方。另外，所述液晶显示装置具有一传感区域及一传感器，所述背光模块对应所述传感区域具有一开孔，所述传感器设于所述开孔的内部或下方。在本发明中，当所述液晶显示装置处于一不通电状态时，使用者无法从外部看到所述传感器，而当所述液晶显示装置处于一通电状态时，使用者可以看到所述传感器。

Description

液晶显示装置 技术领域
本发明涉及一种液晶显示装置，特别是涉及一种在液晶面板的可视区域内设有一传感器的液晶显示装置。
 背景技术
液晶显示装置泛指各种应用液晶面板的装置，例如显示器及各种行动装置，其中行动装置又以手机最具有表性。
随着手机的制造工艺不断地提升，手机屏幕也趋向大尺寸及大屏占比的方向来发展。其中，屏占比是用于表示手机屏幕和手机前面板的面积的比值，而目前手机的屏占比已由80%左右逐渐提升到了90%以上。
然而，为了进一步提升手机的屏占比，在现有技术中会将手机的前传感器部分纳入手机屏幕的可视区域内，也就是通过在手机屏幕内挖孔来提升屏占比,进而提高手机整体的工艺设计美感。
请参照图1所示，图1是现有一种液晶显示装置的局部剖面示意图。现有一种液晶显示装置100例如为一手机，其主要包含一液晶面板110，所述液晶面板110包含一第一透明基板111、一第二透明基板112及一液晶层113，所述第一透明基板111上设有多个薄膜晶体管111a，所述第二透明基板112上设有多个色阻单元112a，所述液晶层113填充于所述第一基板111与所述第二基板112形成的封装结构之内。
此外，所述液晶显示装置100还包含：一第一偏光片120，设于所述液晶面板110的下方；一第二偏光片130设于所述液晶面板110的上方；一背光模块140设于所述第一偏光片120的下方；一光学胶层(OCA；Optical Clear Adhesive)150设于所述第二偏光片130的上方；以及一透明盖板160设于所述光学胶层150的上方。
再者，所述液晶显示装置100还包含一传感器170，为了将所述传感器170纳入所述液晶面板110的可视区域内，所述液晶显示装置100设置一传感区域A，在所述传感区域A内的所述第一偏光片120、所述第二偏光片130及所述背光模块140分别对应地设置开孔，所述传感器170则设置在这些开孔的下方。因此，如图1中箭头所表示的外部光线可以穿过所述液晶显示装置100的所述传感区域A，使得所述传感器170可以进行传感作业，所述传感器170例如为一摄像头、感光传感器、红外线传感器或指纹传感器。当所述传感器170为一摄像头时，通过所述传感区域A可进行拍照或摄影工作。
然而，由于采用挖孔的方式，不论所述液晶显示装置100是否通电使用，使用者都能够从外部看到设置在所述液晶面板110下方的所述传感器170，因此虽然可以增加所述液晶显示装置100的屏占比，但也一定程度的影响所述液晶显示装置100的整体感。
因此，有必要提供一种改良的液晶显示装置，以解决上述技术问题。
 技术问题
本发明的主要目的是提供一种液晶显示装置，其包含设置于一液晶显示面板的可视区域内的一传感器，当所述液晶显示装置处于一不通电状态时，使用者无法从外部看到设置在所述液晶面板下方的所述传感器，而当所述液晶显示装置处于一通电状态时，使用者才可以从外部看到设置在所述液晶面板下方的所述传感器。
 技术解决方案
为达上述目的，本发明提供一种液晶显示装置，其包含：一液晶面板，包含一第一透明基板、一第二透明基板及一液晶层，其中所述液晶层填充于所述第一基板与所述第二基板形成的封装结构之内，所述液晶面板并设有多个薄膜晶体管多个色阻单元；一第一偏光片，设于所述液晶面板的下方；及一第二偏光片，设于所述液晶面板的上方；其中，所述液晶显示装置还包含一传感区域，在所述传感区域之内设有所述多个薄膜晶体管；在所述第一偏光片的下方设置一背光模块，所述背光模块相应所述传感区域具有一开孔；所述第一偏光片的偏振方向与所述第二偏光片的偏振方向垂直；以及所述第一透明基板设有所述多个薄膜晶体管及多个像素单元，所述第二透明基板设有所述多个色阻单元，其中在所述传感区域中，一个所述薄膜晶体管用于驱动一个至多个像素单元。
在本发明的一实施例中，所述背光模块的所述开孔的内部或者下方设有一传感器。
在本发明的一实施例中，所述液晶显示装置具有一不通电状态与一通电状态，当所述液晶显示装置处于所述不通电状态时，由于所述第一偏光片的偏振方向与所述第二偏光片的偏振方向垂直，使得外部光线无法穿过所述液晶面板的所述传感区域；当所述液晶显示装置处于所述通电状态时，由于所述多个薄膜晶体管控制所述液晶层内的液晶旋转，使得外部光线穿过所述液晶面板的所述传感区域。
在本发明的一实施例中，所述多个像素单元排列为一阵列，所述薄膜晶体管设置于受其驱动的所述多个像素单元之间。
在本发明的一实施例中，所述多个像素单元排列为一行，所述薄膜晶体管设置于受其驱动的所述多个像素单元之一侧边。
在本发明的一实施例中，所述液晶面板还包含一边框区域，所述薄膜晶体管位于所述边框区域。
在本发明的一实施例中，所述第一透明基板是一阵列基板，所述第二透明基板是一彩色滤光片基板。
在本发明的一实施例中，所述液晶显示装置还包含一透明盖板，所述透明盖板通过一光学胶层贴设于所述第二偏光片的上方。
为达上述目的，本发明另提供一种液晶显示装置，其包含：一液晶面板，包含一第一透明基板、一第二透明基板及一液晶层，其中所述液晶层填充于所述第一基板与所述第二基板形成的封装结构之内，所述液晶面板并设有多个薄膜晶体管多个色阻单元；一第一偏光片，设于所述液晶面板的下方；及一第二偏光片，设于所述液晶面板的上方；其中，所述液晶显示装置还包含一传感区域，在所述传感区域之内设有所述多个薄膜晶体管；以及在所述第一偏光片的下方设置一背光模块，所述背光模块相应所述传感区域具有一开孔。
在本发明的一实施例中，所述第一偏光片的偏振方向与所述第二偏光片的偏振方向垂直。
在本发明的一实施例中，所述背光模块的所述开孔的内部或者下方设有一传感器。
在本发明的一实施例中，所述液晶显示装置具有一不通电状态与一通电状态，当所述液晶显示装置处于所述不通电状态时，由于所述第一偏光片的偏振方向与所述第二偏光片的偏振方向垂直，使得外部光线无法穿过所述液晶面板的所述传感区域；当所述液晶显示装置处于所述通电状态时，由于所述多个薄膜晶体管控制所述液晶层内的液晶旋转，使得外部光线穿过所述液晶面板的所述传感区域。
在本发明的一实施例中，所述第一透明基板设有所述多个薄膜晶体管及多个像素单元，所述第二透明基板设有所述多个色阻单元，其中在所述传感区域中，一个所述薄膜晶体管用于驱动一个至多个像素单元。
在本发明的一实施例中，所述多个像素单元排列为一阵列，所述薄膜晶体管设置于受其驱动的所述多个像素单元之间。
在本发明的一实施例中，所述多个像素单元排列为一行，所述薄膜晶体管设置于受其驱动的所述多个像素单元之一侧边。
在本发明的一实施例中，所述液晶面板还包含一边框区域，所述薄膜晶体管位于所述边框区域。
在本发明的一实施例中，所述第一透明基板是一阵列基板，所述第二透明基板是一彩色滤光片基板。
在本发明的一实施例中，所述液晶显示装置还包含一透明盖板，所述透明盖板通过一光学胶层贴设于所述第二偏光片的上方。
 有益效果
在本发明中，因为所述传感区域并不用于显示影像，因此所述液晶显示装置在所述传感区域之内没有设置所述多个色阻单元，并且由于所述第一偏光片的偏振方向与所述第二偏光片的偏振方向垂直，当所述液晶显示装置处于所述不通电状态时，使用者无法从外部看到设置在所述液晶面板下方的所述传感器，而当所述液晶显示装置处于所述通电状态时，使用者才可以从外部看到设置在所述液晶面板下方的所述传感器。
 附图说明
图1：现有一种液晶显示装置的局部剖面示意图。
图2：本发明一实施例的一液晶显示装置的局部剖面示意图。
图3：本发明又一实施例的一传感区域的上视示意图。
图4：本发明另一实施例的一传感区域的上视示意图。
 本发明的实施方式
为让本发明上述目的、特征及优点更明显易懂，下文特举本发明较佳实施例，并配合附图，作详细说明。再者，本发明所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等，仅是参照附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。
请参照图2，图2是本发明一实施例的一液晶显示装置的局部剖面示意图。本发明的一种液晶显示装置200例如为一手机，其主要包含一液晶面板210，所述液晶面板210包含一第一透明基板211、一第二透明基板212及一液晶层213，所述液晶层213填充于所述第一基板211与所述第二基板212形成的封装结构之内。
如图2所示，所述第一透明基板211例如是一阵列基板，所述第二透明基板212例如是一彩色滤光片基板，所述第一透明基板211上设有多个薄膜晶体管211a，所述第二透明基板212上设有多个色阻单元212a。然而，本发明并不限于此，在其他可能的实施例中，所述多个薄膜晶体管211a也有可能是设于所述第二透明基板212上，而所述多个色阻单元212a也有可能是设于所述第一透明基板211上。
此外，所述液晶显示装置200还包含：一第一偏光片220，设于所述液晶面板210的下方；一第二偏光片230设于所述液晶面板210的上方；一背光模块240设于所述第一偏光片220的下方；一光学胶层(OCA；Optical Clear Adhesive)250设于所述第二偏光片230的上方；以及一透明盖板260设于所述光学胶层250的上方。其中，所述第一偏光片220的偏振方向与所述第二偏光片230的偏振方向垂直，所述透明盖板260例如是一玻璃盖板，其通过所述光学胶层贴设于所述第二偏光片230的上方。
再者，所述液晶显示装置200还包含一传感器270，为了将所述传感器270纳入所述液晶面板210的可视区域内，所述液晶显示装置200设置一传感区域B，在所述传感区域B内所述背光模块240对应地设置开孔，所述传感器270则设置在所述背光模块240的所述开孔的内部或下方。
在本发明中，因为所述传感区域B并不用于显示影像，因此所述液晶显示装置200在所述传感区域B之内没有设置所述多个色阻单元212a。
再者，由于所述第一偏光片220的偏振方向与所述第二偏光片230的偏振方向垂直，且没有如现有技术的作法在所述传感区域B开孔，因此当所述液晶显示装置200处于一不通电状态时，外部光线无法穿过所述液晶面板210的所述传感区域B。相反地，当所述液晶显示装置200处于一通电状态时，通过所述第一透明基板211上的所述多个薄膜晶体管211a可控制所述液晶层213内的液晶旋转，从而使外部光线可以穿过所述液晶面板210的所述传感区域B。
综上所述，当所述液晶显示装置220处于所述不通电状态时，使用者无法从外部看到设置在所述液晶面板210下方的所述传感器270，而当所述液晶显示装置220处于所述通电状态时，使用者才可以从外部看到设置在所述液晶面板210下方的所述传感器270，也就是如图2中箭头所表示的外部光线可以穿过所述液晶显示装置200的所述传感区域B，使得例如为一摄像头的所述传感器270可以进行拍照或摄影工作。
请参照图3所示，图3是本发明又一实施例的一传感区域的上视示意图。在本实施例中，在一传感区域B中，一个薄膜晶体管211a用于驱动4个像素单元211b。
如图3所示，所述多个像素单元211b排列为一阵列，所述薄膜晶体管211a设置于受其驱动的4个像素单元211b之间。因此，本实施例可以减少在所述传感区域B中所述薄膜晶体管211a的数量，通过提高所述传感区域B的开口率以进一步提高进光量。
此外，本发明并不限于此，所述薄膜晶体管211a可以选择性的用于驱动1个至N个所述像素单元211b。
请参照图4所示，图4是本发明另一实施例的一传感区域的上视示意图。本实施例的液晶显示装置200及传感区域B与上述实施例大致相似，因此沿用相同的元件名称，但不同之处在于：在本实施例中，多个像素单元211b排列为一行，多个薄膜晶体管211a设置于受其驱动的所述多个像素单元211b之一侧边，并且由于所述液晶面板210还包含一边框区域C，所述薄膜晶体管211a可位于所述边框区域C内。
因此，本实施例可以减少在所述传感区域B中所述薄膜晶体管211a的数量，并通过将所述薄膜晶体管211a移至所述液晶面板210的边框区域C来提高所述传感区域B的开口率。
综上所述，在本现有技术中，不论液晶显示装置是否通电使用，使用者都能够从外部看到设置在液晶面板下方的传感器。在本发明中，因为所述传感区域B并不用于显示影像，因此所述液晶显示装置200在所述传感区域B之内没有设置所述多个色阻单元212a，并且由于所述第一偏光片220的偏振方向与所述第二偏光片230的偏振方向垂直，因此当所述液晶显示装置220处于所述不通电状态时，使用者无法从外部看到设置在所述液晶面板210下方的所述传感器270，而当所述液晶显示装置220处于所述通电状态时，使用者才可以从外部看到设置在所述液晶面板210下方的所述传感器270。
本发明已由上述相关实施例加以描述，然而上述实施例仅为实施本发明的范例。必需指出的是，已公开的实施例并未限制本发明的范围。相反地，包含于权利要求书的精神及范围的修改及均等设置均包括于本发明的范围内。

Claims (18)

  1. 一种液晶显示装置，其包含：
    一液晶面板，包含一第一透明基板、一第二透明基板及一液晶层，其中所述液晶层填充于所述第一基板与所述第二基板形成的封装结构之内，所述液晶面板并设有多个薄膜晶体管及多个色阻单元；
    一第一偏光片，设于所述液晶面板的下方；及
    一第二偏光片，设于所述液晶面板的上方；
    其中所述液晶显示装置还包含一传感区域，在所述传感区域之内设有所述多个薄膜晶体管；在所述第一偏光片的下方设置一背光模块，所述背光模块相应所述传感区域具有一开孔；所述第一偏光片的偏振方向与所述第二偏光片的偏振方向垂直；以及所述第一透明基板设有所述多个薄膜晶体管及多个像素单元，所述第二透明基板设有所述多个色阻单元，其中在所述传感区域中，一个所述薄膜晶体管用于驱动一个至多个像素单元。
  2. 如权利要求1所述的液晶显示装置，其中所述背光模块的所述开孔的内部或者下方设有一传感器。
  3. 如权利要求2所述的液晶显示装置，其中所述液晶显示装置具有一不通电状态与一通电状态，当所述液晶显示装置处于所述不通电状态时，由于所述第一偏光片的偏振方向与所述第二偏光片的偏振方向垂直，使得外部光线无法穿过所述液晶面板的所述传感区域；当所述液晶显示装置处于所述通电状态时，由于所述多个薄膜晶体管控制所述液晶层内的液晶旋转，使得外部光线穿过所述液晶面板的所述传感区域。
  4. 如权利要求1所述的液晶显示装置，其中所述多个像素单元排列为一阵列，所述薄膜晶体管设置于受其驱动的所述多个像素单元之间。
  5. 如权利要求1所述的液晶显示装置，其中所述多个像素单元排列为一行，所述薄膜晶体管设置于受其驱动的所述多个像素单元之一侧边。
  6. 如权利要求5所述的液晶显示装置，其中所述液晶面板还包含一边框区域，所述薄膜晶体管位于所述边框区域。
  7. 如权利要求1所述的液晶显示装置，其中所述第一透明基板是一阵列基板，所述第二透明基板是一彩色滤光片基板。
  8. 如权利要求1所述的液晶显示装置，其中所述液晶显示装置还包含一透明盖板，所述透明盖板通过一光学胶层贴设于所述第二偏光片的上方。
  9. 一种液晶显示装置，其包含：
    一液晶面板，包含一第一透明基板、一第二透明基板及一液晶层，其中所述液晶层填充于所述第一基板与所述第二基板形成的封装结构之内，所述液晶面板并设有多个薄膜晶体管及多个色阻单元；
    一第一偏光片，设于所述液晶面板的下方；及
    一第二偏光片，设于所述液晶面板的上方；
    其中所述液晶显示装置还包含一传感区域，在所述传感区域之内设有所述多个薄膜晶体管；以及在所述第一偏光片的下方设置一背光模块，所述背光模块相应所述传感区域具有一开孔。
  10. 如权利要求9所述的液晶显示装置，其中所述第一偏光片的偏振方向与所述第二偏光片的偏振方向垂直。
  11. 如权利要求10所述的液晶显示装置，其中所述背光模块的所述开孔的内部或者下方设有一传感器。
  12. 如权利要求11所述的液晶显示装置，其中所述液晶显示装置具有一不通电状态与一通电状态，当所述液晶显示装置处于所述不通电状态时，由于所述第一偏光片的偏振方向与所述第二偏光片的偏振方向垂直，使得外部光线无法穿过所述液晶面板的所述传感区域；当所述液晶显示装置处于所述通电状态时，由于所述多个薄膜晶体管控制所述液晶层内的液晶旋转，使得外部光线穿过所述液晶面板的所述传感区域。
  13. 如权利要求9所述的液晶显示装置，其中所述第一透明基板设有所述多个薄膜晶体管及多个像素单元，所述第二透明基板设有所述多个色阻单元，其中在所述传感区域中，一个所述薄膜晶体管用于驱动一个至多个像素单元。
  14. 如权利要求13所述的液晶显示装置，其中所述多个像素单元排列为一阵列，所述薄膜晶体管设置于受其驱动的所述多个像素单元之间。
  15. 如权利要求13所述的液晶显示装置，其中所述多个像素单元排列为一行，所述薄膜晶体管设置于受其驱动的所述多个像素单元之一侧边。
  16. 如权利要求15所述的液晶显示装置，其中所述液晶面板还包含一边框区域，所述薄膜晶体管位于所述边框区域。
  17. 如权利要求9所述的液晶显示装置，其中所述第一透明基板是一阵列基板，所述第二透明基板是一彩色滤光片基板。
  18. 如权利要求9所述的液晶显示装置，其中所述液晶显示装置还包含一透明盖板，所述透明盖板通过一光学胶层贴设于所述第二偏光片的上方。
PCT/CN2018/113264 2018-09-27 2018-11-01 液晶显示装置 WO2020062413A1 (zh)

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