WO2020248331A1 - 液晶显示装置 - Google Patents

液晶显示装置 Download PDF

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Publication number
WO2020248331A1
WO2020248331A1 PCT/CN2019/096899 CN2019096899W WO2020248331A1 WO 2020248331 A1 WO2020248331 A1 WO 2020248331A1 CN 2019096899 W CN2019096899 W CN 2019096899W WO 2020248331 A1 WO2020248331 A1 WO 2020248331A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
crystal display
opening
light
light source
Prior art date
Application number
PCT/CN2019/096899
Other languages
English (en)
French (fr)
Inventor
刘凡成
Original Assignee
武汉华星光电技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 武汉华星光电技术有限公司 filed Critical 武汉华星光电技术有限公司
Publication of WO2020248331A1 publication Critical patent/WO2020248331A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • G09G3/3426—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines the different display panel areas being distributed in two dimensions, e.g. matrix
    • 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
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • 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
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    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
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    • G02F1/00—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
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    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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    • G02F1/1336—Illuminating devices
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    • G02F1/133603—Direct backlight with LEDs
    • 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
    • G02F1/133612—Electrical details
    • 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
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    • G02F1/133621—Illuminating devices providing coloured light
    • 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
    • G02F1/1339—Gaskets; Spacers; Sealing of 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
    • G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
    • G—PHYSICS
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    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
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    • G—PHYSICS
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    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • 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
    • G02F1/133621—Illuminating devices providing coloured light
    • G02F1/133622—Colour sequential illumination
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    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen

Definitions

  • the present invention relates to the field of display technology, in particular to a liquid crystal display device.
  • LCD Liquid Crystal Display
  • liquid crystal display devices which include a housing, a liquid crystal display panel arranged in the housing, an upper polarizer and a lower polarizer respectively arranged on the liquid crystal display panel, and a housing arranged in the housing Backlight module module).
  • the structure of the traditional liquid crystal display panel is composed of a color filter substrate (Color Filter), a thin film transistor array substrate (Thin Film Transistor Array Substrate, TFT Array Substrate), and a liquid crystal layer (Liquid Array Substrate) arranged between the two substrates. Crystal Layer).
  • the working principle of the liquid crystal display device is to use the birefringence characteristics of the liquid crystal to control the rotation of the liquid crystal by applying a voltage to the thin film transistor array substrate and the color film substrate, so that the light emitted by the backlight module is polarized by the lower polarizer. As the liquid crystal rotates, it is emitted from the upper polarizer to realize the display.
  • the polarization axis of the upper polarizer and the lower polarizer are vertical, and the two together with the liquid crystal display panel act as a light switch (or light valve).
  • display devices tend to develop in the direction of large size and large screen-to-body ratio, where the screen-to-body ratio refers to the ratio of the area of the display device capable of displaying to the total area.
  • the front camera of the mobile phone is placed in the visible area of the display device, and holes are dug on the display device at the position corresponding to the front camera, but this design adopts this design
  • the front camera of the display device is visible in the off-screen state, that is, in the standby state, which affects the overall sense of the display device.
  • the prior art proposes a liquid crystal display device, which does not dig holes for the front camera on the liquid crystal layer of the upper polarizer, lower polarizer and liquid crystal display panel, but retains the color filter on the color film substrate
  • the corresponding front camera in the optical layer is hollowed out.
  • the liquid crystal display device When the liquid crystal display device is in the off-screen state, the liquid crystal in the liquid crystal layer does not deflect. Since the polarization axes of the upper and lower polarizers are vertical, light cannot pass through the liquid crystal display device The area corresponding to the front camera makes the front camera invisible. When you need to use the front camera, you only need to drive the area of the liquid crystal layer corresponding to the front camera so that the light can pass through the area of the LCD device corresponding to the front camera.
  • the color filter layer corresponds to the hole of the front camera, the area corresponding to the front camera in the liquid crystal display device cannot perform color display.
  • the object of the present invention is to provide a liquid crystal display device, the area corresponding to the camera can perform color display, and the product quality is high.
  • the present invention provides a liquid crystal display device including a liquid crystal display panel, an upper polarizer and a lower polarizer respectively arranged on both sides of the liquid crystal display panel, and a backlight module arranged on the side of the lower polarizer away from the liquid crystal display panel. group;
  • the liquid crystal display panel includes an array substrate and a color filter substrate arranged opposite to each other, and a liquid crystal layer provided between the array substrate and the color filter substrate; the color filter substrate includes a color filter layer;
  • the backlight module includes a backlight module body and a light source in an opening area; the backlight module body is provided with a first opening; the light source in the opening area is arranged on the backlight module body and corresponds to the first opening
  • the light source in the opening area has a light emitting surface facing the area of the liquid crystal display panel corresponding to the first opening, and the light source in the opening area is used to sequentially emit red light and green light toward the area corresponding to the first opening of the liquid crystal display panel And blue light;
  • the color filter layer is provided with a second opening corresponding to the first opening; the upper polarizer and the lower polarizer both cover the first opening.
  • the array substrate includes a first substrate, a plurality of thin film transistors and a plurality of pixel electrodes arranged on a side of the first substrate close to the liquid crystal layer;
  • the first substrate includes a camera area corresponding to the first opening, and is located The display area outside the camera area and the sealant area outside the display area;
  • the plurality of pixel electrodes include a plurality of first pixel electrodes located in the camera area, and the plurality of thin film transistors include a plurality of Each of the first thin film transistors is electrically connected to at least one of the plurality of first pixel electrodes.
  • the light source in the aperture area is ring-shaped and includes a plurality of sub-light sources arranged at intervals in sequence.
  • Each sub-light source has a light-emitting surface facing the area corresponding to the first opening of the liquid crystal display panel, and each sub-light source is used to face the liquid crystal display panel.
  • the area of the first opening emits red light, green light and blue light in sequence.
  • the light source in the opening area is located on the side of the backlight module body close to the liquid crystal display panel and surrounds the outside of the first opening.
  • the first opening is a circular hole; the light emitted from the center point of the light-emitting surface of each sub-light source intersects the center line of the first opening; the light-emitting direction of each sub-light source is between the direction perpendicular to the plane where the liquid crystal display panel is located
  • the included angle satisfies:
  • a ⁇ arctan[(l+r)/h] where a is the angle between the light-emitting direction of the sub-light source and the direction perpendicular to the plane of the liquid crystal display panel, and l is the center of the sub-light source and the backlight module body enclosed The distance between the side walls of the first opening, r is the radius of the first opening, and h is the distance between the center of the sub-light source and the liquid crystal display panel.
  • the light source in the opening area is located on the side wall of the backlight module body surrounding the first opening.
  • the first opening is a circular hole; the light emitted from the center point of the light-emitting surface of each sub-light source intersects the center line of the first opening; the light-emitting direction of each sub-light source is between the direction perpendicular to the plane where the liquid crystal display panel is located
  • the included angle satisfies:
  • the sub-light source is a three-color LED capable of emitting red, green, and blue light in sequence; or, the sub-light source includes a red LED, a green LED, and a blue LED arranged in sequence.
  • the liquid crystal display device also includes a cover plate arranged on the side of the upper polarizer far away from the liquid crystal display panel, an optical glue located between the cover plate and the upper polarizer, and an optical glue arranged on the side of the lower polarizer far away from the liquid crystal display panel and connected with the first polarizer.
  • the camera corresponding to the opening.
  • the polarization axis of the upper polarizer is perpendicular to the polarization axis of the lower polarizer.
  • the liquid crystal display device of the present invention includes a liquid crystal display panel, an upper polarizer and a lower polarizer respectively arranged on both sides of the liquid crystal display panel, and a backlight module arranged on the side of the lower polarizer away from the liquid crystal display panel,
  • the backlight module includes a backlight module body and a light source in an opening area.
  • the backlight module body is provided with a first opening.
  • the light source in the opening area is arranged on the backlight module body and corresponds to the first opening.
  • the light source in the opening area has The light exit surface facing the area corresponding to the first opening of the liquid crystal display panel is used to sequentially emit red, green and blue light toward the area corresponding to the first opening of the liquid crystal display panel.
  • the color filter layer is provided with the first opening
  • the corresponding second opening enables the area corresponding to the camera in the liquid crystal display device to realize normal color display, and the product quality is high.
  • FIG. 1 is a schematic partial cross-sectional view of the first embodiment of the liquid crystal display device of the present invention.
  • FIG. 2 is a schematic partial top view of the backlight module of the first embodiment of the liquid crystal display device of the present invention at the light source in the aperture area;
  • FIG. 3 is a schematic diagram of the light path of the light source in the aperture area in the first embodiment of the liquid crystal display device of the present invention.
  • FIG. 4 is a schematic diagram of the connection between the first pixel electrode and the first thin film transistor in the liquid crystal display device of the present invention.
  • FIG. 5 is a schematic partial cross-sectional view of the second embodiment of the liquid crystal display device of the present invention.
  • FIG. 6 is a schematic diagram of the light path of the light source in the aperture area in the second embodiment of the liquid crystal display device of the present invention.
  • the liquid crystal display device of the first embodiment of the present invention includes a liquid crystal display panel 10, an upper polarizer 20 and a lower polarizer 30 respectively arranged on both sides of the liquid crystal display panel 10, and a lower polarizer 30 is far away from the backlight module 40 on the side of the liquid crystal display panel 10.
  • the liquid crystal display panel 10 includes an array substrate 11 and a color filter substrate 12 disposed opposite to each other, and a liquid crystal layer 13 disposed between the array substrate 11 and the color filter substrate 12.
  • the color filter substrate 12 includes a color filter layer 121.
  • the backlight module 40 includes a backlight module body 41 and an aperture light source 42.
  • the backlight module body 41 has a first opening 411.
  • the aperture area light source 42 is disposed on the backlight module body 41 and corresponds to the first aperture 411, and the aperture area light source 42 has a light emitting surface facing the area of the liquid crystal display panel 10 corresponding to the first aperture 411,
  • the aperture area light source 42 is used to sequentially emit red light, green light and blue light toward the area of the liquid crystal display panel 10 corresponding to the first aperture 411.
  • the color filter layer 121 is provided with a second opening 1211 corresponding to the first opening 411.
  • the upper polarizer 20 and the lower polarizer 30 both cover the first opening 411.
  • the array substrate 11 includes a first substrate 111 and a plurality of thin film transistors 112 and a plurality of pixel electrodes 113 disposed on a side of the first substrate 111 close to the liquid crystal layer 13.
  • the first substrate 111 includes a camera area 1111 corresponding to the first opening 411, a display area 1112 located outside the camera area 1111, and a seal area 1113 located outside the display area 1112.
  • the plurality of pixel electrodes 113 includes a plurality of first pixel electrodes 1131 located in the camera area 1111, the plurality of thin film transistors 112 includes a plurality of first thin film transistors 1121 located in the seal area 1113, and each first thin film transistor The transistor 1121 is electrically connected to at least one of the plurality of first pixel electrodes 1131 and drives the first pixel electrode 1131 electrically connected thereto.
  • the plurality of first pixel electrodes 1131 are arranged in an array, and each row of the first pixel electrodes 1131 is electrically connected to a first thin film transistor 1121.
  • the plurality of pixel electrodes 113 further includes a plurality of second pixel electrodes 1132 located in the display area 1112
  • the plurality of thin film transistors 112 further includes a plurality of second pixel electrodes 1132 located in the display area 1112.
  • Thin film transistors 1122 Each second thin film transistor 1122 is electrically connected to a second pixel electrode 1132 to drive it.
  • the array substrate 11 further includes an insulating layer 114 that covers the plurality of thin film transistors 112 and the first substrate 111, and the plurality of pixel electrodes 113 are all located on the insulating layer 114.
  • the color filter substrate 12 further includes a second substrate 122, and the color filter layer 121 is provided on a side of the second substrate 122 close to the liquid crystal layer 13.
  • the light source 42 in the aperture area has a ring shape and includes a plurality of sub-light sources 421 arranged at intervals.
  • Each sub-light source 421 has a corresponding first aperture 411 facing the liquid crystal display panel 10.
  • On the light-emitting surface of the area, each sub-light source 421 is used to sequentially emit red light, green light and blue light toward the area of the liquid crystal display panel 10 corresponding to the first opening 411.
  • the aperture area light source 42 is located on the side of the backlight module body 41 close to the liquid crystal display panel 10 and surrounds the first aperture 411 Outside.
  • the first opening 411 is a round hole.
  • the light emitted from the center point of the light emitting surface of each sub-light source 421 intersects the center line of the first opening 411.
  • the light output direction of each sub-light source 421 is between the direction perpendicular to the plane where the liquid crystal display panel 10 is located.
  • the included angle of, that is, the inclination angle of each sub-light source 421 with respect to the direction perpendicular to the plane of the liquid crystal display panel 10 satisfies:
  • a is the angle between the light emission direction of the sub-light source 421 and the direction perpendicular to the plane where the liquid crystal display panel 10 is located
  • l is the center of the sub-light source 421 and the side wall of the backlight module body 41 that surround the first opening 411 R is the radius of the first opening 411
  • h is the distance between the center of the sub-light source 421 and the liquid crystal display panel 10.
  • the sub-light source 421 may be a three-color light emitting diode (LED) capable of sequentially emitting red light, green light, and blue light.
  • the sub-light source 421 includes a red LED, a green LED, and a blue LED that are arranged in sequence. The red, green, and blue LEDs are alternately and individually emitted in order to realize that the sub-light source 421 can sequentially generate red and green light. Light and blue light.
  • the backlight module body 41 may be a mini-LED (mini-LED) direct-type backlight module, including a direct-type backlight source and a diffusion sheet (not shown) arranged above the direct-type backlight source. There is a first opening 411.
  • the light source 42 in the opening area is arranged on the diffuser.
  • the backlight module body 41 can also be a commonly used side-lit backlight module, including a light guide plate and an edge-lit backlight provided on one side of the light guide plate
  • the light source (not shown) is provided with a first opening 411 on the light guide plate, and the light source 42 in the opening area is provided on the light guide plate.
  • the display device further includes a cover 50 disposed on the side of the upper polarizer 20 away from the liquid crystal display panel 10, an optical glue 60 disposed between the cover 50 and the upper polarizer 20, and
  • the lower polarizer 30 is away from the side of the liquid crystal display panel 10 and corresponds to the camera 70 corresponding to the first opening 411.
  • the camera 70 may be located on the side of the backlight module 40 away from the liquid crystal display panel 10, or may be fully or partially accommodated in the backlight module. Inside the first opening 411 of the main body 41.
  • the polarization axis of the upper polarizer 20 is perpendicular to the polarization axis of the lower polarizer 30.
  • the difference between the liquid crystal display device of the second embodiment of the present invention and the above-mentioned first embodiment is that the light source 42 in the opening area is located in the backlight module body 41 surrounding the first opening 411 On the side wall.
  • the first opening 411 is a round hole.
  • the light emitted from the center point of the light emitting surface of each sub-light source 421 intersects the center line of the first opening 411.
  • the light output direction of each sub-light source 421 is between the direction perpendicular to the plane where the liquid crystal display panel 10 is located.
  • the included angle of, that is, the inclination angle of each sub-light source 421 with respect to the direction perpendicular to the plane of the liquid crystal display panel 10 satisfies:
  • a' is the angle between the light-emitting direction of the sub-light source 421 and the direction perpendicular to the plane where the liquid crystal display panel 10 is located
  • l' is the distance between the center of the sub-light source 421 and the center line of the first opening 411
  • h 'Is the distance between the center of the sub-light source 421 and the liquid crystal display panel 10, and the rest are the same as in the first embodiment.
  • the opening area light source 42 is arranged on the side wall of the backlight module body 41 enclosing the first opening 411 by using a packaging method such as chip scale packaging (CSP).
  • CSP chip scale packaging
  • the light-emitting surface of each sub-light source 421 of the light source 42 in the opening area is controlled by the packaging method to face the area corresponding to the first opening 411 of the liquid crystal display panel 10, and in the whole
  • the frame covering the outer side of the backlight module 40 needs to reserve a certain distance between the side wall of the backlight module body 41 that encloses the first opening 411, such as greater than 0.2mm, to place the opening Multiple sub-light sources 421 of the area light source 42.
  • a first opening 411 is provided on the backlight module body 41 of the backlight module 40, and an opening area light source is provided on the backlight module body 41 corresponding to the first opening 411. 42.
  • the aperture area light source 42 has a light emitting surface facing the area of the liquid crystal display panel 10 corresponding to the first aperture 411, and is used to sequentially emit red, green, and blue light toward the area of the liquid crystal display panel 10 corresponding to the first aperture 411
  • the color filter layer 121 is provided with a second opening 1211 corresponding to the first opening 411, and the upper polarizer 20 and the lower polarizer 30 cover the first opening 411, so that the display device of the present invention is in the off state Bottom, the liquid crystal molecules in the liquid crystal layer 13 are not deflected, and the linearly polarized light generated by the polarization of the area of the lower polarizer 30 corresponding to the first opening 411 through the liquid crystal layer 13 cannot pass through the upper polar
  • the area of an opening 411 makes the camera 70 corresponding to the first opening 411 unobservable by the user, improves the overall sense of the LCD device when the screen is turned off, and improves the quality of the product; when the camera 70 needs to be used for shooting That is, when the camera 70 is required to capture light, the liquid crystal molecules corresponding to the first opening 411 in the liquid crystal layer 13 are driven, and the linearly polarized light generated by the polarization of the area corresponding to the first opening 411 of the upper polarizer 20 passes through the light.
  • the second opening 1211 of the color filter layer 121 is injected into the area of the liquid crystal layer 13 corresponding to the first opening 411, and as the liquid crystal molecules corresponding to the first opening 411 in the liquid crystal layer 13 are deflected, they can pass through the lower polarizer 30 corresponds to the area of the first opening 411, and then enters the camera 70 through the first opening 411, so that the camera 70 captures the light on the side of the upper polarizer 20, and the present invention will specifically be used to drive the corresponding first opening.
  • the plurality of first thin film transistors 1121 of the plurality of first pixel electrodes 1131 of the hole 411 are arranged in the seal area 1113 of the first substrate 111, and one first thin film transistor 1121 is electrically connected to at least one first pixel electrode 1131 That is, the area corresponding to the first opening 411 on the array substrate 11 is not provided with a thin film transistor, thereby increasing the aperture ratio of the area corresponding to the first opening 411 of the liquid crystal display panel 10, and improving the camera 70 when the camera 70 needs to be used for shooting.
  • the color filter layer 121 has a second opening 1211 corresponding to the first opening 411
  • the present invention uses the opening area light source 42 to correspond to the liquid crystal display panel 10.
  • the area of the first opening 411 emits red light, green light, and blue light in sequence, so that the field color sequence (FSC) technology is adopted, and the liquid crystal display panel 10 is connected to the plurality of first pixel electrodes 1131 through the time separation method.
  • Corresponding multiple pixels can display red, green, and blue in time-sharing and superimpose, and finally display a specific color, so that the area corresponding to the camera 70 in the liquid crystal display device can also be displayed in color, thereby improving the quality of the product.
  • the liquid crystal display device of the present invention includes a liquid crystal display panel, an upper polarizer and a lower polarizer respectively arranged on both sides of the liquid crystal display panel, and a backlight module arranged on the side of the lower polarizer away from the liquid crystal display panel.
  • the module includes a backlight module body and a light source in an opening area.
  • the backlight module body is provided with a first opening.
  • the light source in the opening area is arranged on the backlight module body and corresponds to the first opening.
  • the light source in the opening area has a direction
  • the light-emitting surface of the area corresponding to the first opening of the liquid crystal display panel is used to sequentially emit red, green and blue light toward the area corresponding to the first opening of the liquid crystal display panel, and the color filter layer is provided corresponding to the first opening
  • the second opening of the LCD device enables the area corresponding to the camera in the liquid crystal display device to realize normal color display, and the product quality is high.

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Abstract

一种液晶显示装置，包括液晶显示面板（10）、分别设于液晶显示面板（10）两侧的上偏光片（20）和下偏光片（30）以及设于下偏光片（30）远离液晶显示面板（10）一侧的背光模组（40）。背光模组（40）包括背光模组本体（41）及开孔区光源（42）；背光模组本体（41）设有第一开孔（411），开孔区光源（42）设于背光模组本体（41）上且与第一开孔（411）相对应，开孔区光源（42）具有朝向液晶显示面板（10）对应第一开孔（411）的区域的出光面，用于朝向液晶显示面板（10）对应第一开孔（411）的区域依序发射红光、绿光及蓝光。彩色滤光层（121）设有与第一开孔（411）对应的第二开孔（1211），使得液晶显示装置中对应摄像头（70）的区域能够实现正常的彩色显示。

Description

液晶显示装置 技术领域
本发明涉及显示技术领域，尤其涉及一种液晶显示装置。
 背景技术
液晶显示装置（Liquid Crystal Display，LCD）具有机身薄、省电、无辐射等众多优点，得到了广泛的应用。
现有市场上的液晶显示装置大部分为背光型液晶显示装置，其包括壳体、设于壳体内的液晶显示面板、分别设于液晶显示面板的上偏光片及下偏光片以及设于壳体内的背光模组（Backlight module）。传统的液晶显示面板的结构是由一彩膜基板（Color Filter）、一薄膜晶体管阵列基板（Thin Film Transistor Array Substrate，TFT Array Substrate）以及一配置于两基板间的液晶层（Liquid Crystal Layer）所构成。液晶显示装置的工作原理是利用液晶的双折射特性，通过向薄膜晶体管阵列基板及彩膜基板施加电压控制液晶的转动，使背光模组发出的光线经过下偏光片偏光后产生的线偏振光随着液晶发生旋转，从上偏光片射出以实现显示，上偏光片及下偏光片的偏光轴垂直，两者加上液晶显示面板起到光开关（或光阀）的作用。
随着显示技术的不断完善，显示装置趋向大尺寸及大屏占比的方向发展，其中，屏占比是表示显示装置能够进行显示的区域的面积与总面积的比值。为了提升屏占比，现有技术中会将手机的前置摄像头放入显示装置的可视区域内，并在显示装置上对应前置摄像头的位置整体进行挖孔，但此种采用此种设计的显示装置在熄屏状态也即待机状态下前置摄像头可见，影响显示装置的整体感。
为解决这一技术问题，现有技术提出一种液晶显示装置，不在上偏光片、下偏光片及液晶显示面板的液晶层上对应前置摄像头挖孔，但保留在彩膜基板上的彩色滤光层中对应前置摄像头挖空，当液晶显示装置处于熄屏状态时，液晶层中的液晶不发生偏转，由于上偏光片及下偏光片的偏光轴垂直，因此光线无法穿过液晶显示装置对应前置摄像头的区域使得前置摄像头不可见，需要使用前置摄像头时，只需要对液晶层对应前置摄像头的区域进行驱动即可使得光线能够穿过液晶显示装置对应前置摄像头的区域，然而此种液晶显示装置中由于彩色滤光层对应前置摄像头挖孔，因此液晶显示装置中对应前置摄像头的区域无法进行彩色显示。
 技术问题
本发明的目的在于提供一种液晶显示装置，摄像头对应的区域能够进行彩色显示，产品品质较高。
 技术解决方案
为实现上述目的，本发明提供一种液晶显示装置，包括液晶显示面板、分别设于液晶显示面板两侧的上偏光片及下偏光片及设于下偏光片远离液晶显示面板一侧的背光模组；
所述液晶显示面板包括相对设置的阵列基板与彩膜基板以及设于阵列基板与彩膜基板之间的液晶层；所述彩膜基板包括彩色滤光层；
所述背光模组包括背光模组本体及开孔区光源；所述背光模组本体设有第一开孔；所述开孔区光源设于背光模组本体上且与第一开孔相对应，所述开孔区光源具有朝向液晶显示面板对应第一开孔的区域的出光面，所述开孔区光源用于朝向液晶显示面板对应第一开孔的区域依序发射红光、绿光及蓝光；所述彩色滤光层设有与第一开孔对应的第二开孔；所述上偏光片及下偏光片均覆盖第一开孔。
所述阵列基板包括第一衬底以及设于第一衬底靠近液晶层一侧的多个薄膜晶体管及多个像素电极；所述第一衬底包括与第一开孔对应的摄像头区、位于摄像头区外的显示区及位于显示区外的框胶区；所述多个像素电极包括位于摄像头区内的多个第一像素电极，所述多个薄膜晶体管包括位于框胶区内的多个第一薄膜晶体管，每一第一薄膜晶体管对应与多个第一像素电极中的至少一个电性连接。
所述开孔区光源呈环状，包括依次间隔设置的多个子光源，每一子光源具有朝向液晶显示面板对应第一开孔的区域的出光面，每一子光源用于朝向液晶显示面板对应第一开孔的区域依序发射红光、绿光及蓝光。
所述开孔区光源位于背光模组本体靠近液晶显示面板的一侧且围绕于第一开孔的外侧。
所述第一开孔为圆孔；每一子光源的出光面中心点射出的光线与第一开孔的中心线相交；每一子光源的出光方向与垂直于液晶显示面板所在平面的方向间的夹角满足：
a≤arctan[(l+r)/h]；其中，a为子光源的出光方向与垂直于液晶显示面板所在平面的方向间的夹角，l为子光源的中心与背光模组本体围成第一开孔的侧壁之间的距离，r为第一开孔的半径，h为子光源的中心与液晶显示面板之间的距离。
所述开孔区光源位于背光模组本体围成第一开孔的侧壁上。
所述第一开孔为圆孔；每一子光源的出光面中心点射出的光线与第一开孔的中心线相交；每一子光源的出光方向与垂直于液晶显示面板所在平面的方向间的夹角满足：
a’≤arctan(l’/h’)；其中，a’为子光源的出光方向与垂直于液晶显示面板所在平面的方向间的夹角，l’为子光源的中心与第一开孔的中心线之间的距离，h’为子光源的中心与液晶显示面板之间的距离。
所述子光源为能够依序发射红光、绿光及蓝光的三色LED；或者，所述子光源包括依次设置的红光LED、绿光LED及蓝光LED。
所述液晶显示装置还包括设于上偏光片远离液晶显示面板一侧的盖板、位于盖板与上偏光片之间的光学胶以及设于下偏光片远离液晶显示面板一侧且与第一开孔对应的摄像头。
所述上偏光片的偏光轴与下偏光片的偏光轴垂直。
 有益效果
本发明的有益效果：本发明的液晶显示装置包括液晶显示面板、分别设于液晶显示面板两侧的上偏光片及下偏光片及设于下偏光片远离液晶显示面板一侧的背光模组，背光模组包括背光模组本体及开孔区光源，背光模组本体设有第一开孔，开孔区光源设于背光模组本体上且与第一开孔相对应，开孔区光源具有朝向液晶显示面板对应第一开孔的区域的出光面，用于朝向液晶显示面板对应第一开孔的区域依序发射红光、绿光及蓝光，彩色滤光层设有与第一开孔对应的第二开孔，使得液晶显示装置中对应摄像头的区域能够实现正常的彩色显示，产品品质较高。
 附图说明
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图中，
图1为本发明的液晶显示装置的第一实施例的局部剖视示意图；
图2为本发明的液晶显示装置的第一实施例的背光模组在开孔区光源处的局部俯视示意图；
图3为本发明的液晶显示装置的第一实施例中开孔区光源的光路示意图；
图4为本发明的液晶显示装置中第一像素电极与第一薄膜晶体管的连接示意图；
图5为本发明的液晶显示装置的第二实施例的局部剖视示意图；
图6为本发明的液晶显示装置的第二实施例中开孔区光源的光路示意图。
 本发明的实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图1至图4，本发明的第一实施例的液晶显示装置包括液晶显示面板10、分别设于液晶显示面板10两侧的上偏光片20及下偏光片30及设于下偏光片30远离液晶显示面板10一侧的背光模组40。
请参阅图1，所述液晶显示面板10包括相对设置的阵列基板11与彩膜基板12以及设于阵列基板11与彩膜基板12之间的液晶层13。所述彩膜基板12包括彩色滤光层121。
请参阅图1及图2，所述背光模组40包括背光模组本体41及开孔区光源42。所述背光模组本体41设有第一开孔411。所述开孔区光源42设于背光模组本体41上且与第一开孔411相对应，所述开孔区光源42具有朝向液晶显示面板10对应第一开孔411的区域的出光面，所述开孔区光源42用于朝向液晶显示面板10对应第一开孔411的区域依序发射红光、绿光及蓝光。所述彩色滤光层121设有与第一开孔411对应的第二开孔1211。所述上偏光片20及下偏光片30均覆盖第一开孔411。
具体地，请参阅图1及图4，所述阵列基板11包括第一衬底111以及设于第一衬底111靠近液晶层13一侧的多个薄膜晶体管112及多个像素电极113。所述第一衬底111包括与第一开孔411对应的摄像头区1111、位于摄像头区1111外的显示区1112及位于显示区1112外的框胶区1113。所述多个像素电极113包括位于摄像头区1111内的多个第一像素电极1131，所述多个薄膜晶体管112包括位于框胶区1113内的多个第一薄膜晶体管1121，每一第一薄膜晶体管1121对应与多个第一像素电极1131中的至少一个电性连接而对与其电性连接的第一像素电极1131进行驱动。
优选地，请参阅图4，所述多个第一像素电极1131呈阵列式排布，每一行第一像素电极1131对应与一第一薄膜晶体管1121电性连接。
进一步地，请参阅图1，所述多个像素电极113还包括位于显示区1112内的多个第二像素电极1132，所述多个薄膜晶体管112还包括位于显示区1112内的多个第二薄膜晶体管1122，每一第二薄膜晶体管1122对应与一第二像素电极1132电性连接而对其进行驱动。
更进一步地，请参阅图1，所述阵列基板11还包括绝缘层114，所述绝缘层114覆盖多个薄膜晶体管112及第一衬底111，多个像素电极113均位于绝缘层114上。
具体地，请参阅图1，所述彩膜基板12还包括第二衬底122，彩色滤光层121设于第二衬底122靠近液晶层13的一侧。
具体地，请参阅图1及图2，所述开孔区光源42呈环状，包括依次间隔设置的多个子光源421，每一子光源421具有朝向液晶显示面板10对应第一开孔411的区域的出光面，每一子光源421用于朝向液晶显示面板10对应第一开孔411的区域依序发射红光、绿光及蓝光。
进一步地，请参阅图1及图2，在本发明的第一实施例中，所述开孔区光源42位于背光模组本体41靠近液晶显示面板10的一侧且围绕于第一开孔411的外侧。
更进一步地，请参阅图1至图3，所述第一开孔411为圆孔。请参阅图3，每一子光源421的出光面中心点射出的光线与第一开孔411的中心线相交。为了保证显示时液晶显示面板10对应第一开孔411的区域的亮度均匀，在本发明的第一实施例中，每一子光源421的出光方向与垂直于液晶显示面板10所在平面的方向间的夹角也即每一子光源421相对于垂直于液晶显示面板10所在平面的方向的倾斜角满足：
a≤arctan[(l+r)/h]。其中，a为子光源421的出光方向与垂直于液晶显示面板10所在平面的方向间的夹角，l为子光源421的中心与背光模组本体41围成第一开孔411的侧壁之间的距离，r为第一开孔411的半径，h为子光源421的中心与液晶显示面板10之间的距离。
具体地，所述子光源421可以为能够依序发射红光、绿光及蓝光的三色发光二极管（LED）。或者，所述子光源421包括依次设置的红光LED、绿光LED及蓝光LED，通过使得红光LED、绿光LED及蓝光LED依次交替单独发光实现子光源421能够依序发生红光、绿光及蓝光。
具体地，所述背光模组本体41可以为迷你LED（mini-LED）直下式背光模组，包括直下式背光源及设于直下式背光源上方的扩散片（未图示），扩散片上设有第一开孔411，开孔区光源42设于扩散片上，该背光模组本体41也可以是常用的侧入式背光模组，包括导光板及设于导光板一侧的侧入式背光源（未图示），导光板上设有第一开孔411，开孔区光源42设于导光板上。
具体地，请参阅图1，所述显示装置还包括设于上偏光片20远离液晶显示面板10一侧的盖板50、位于盖板50与上偏光片20之间的光学胶60以及设于下偏光片30远离液晶显示面板10一侧且与第一开孔411对应的摄像头70，摄像头70可以位于背光模组40远离液晶显示面板10一侧，或者也可以全部或部分容置在背光模组本体41的第一开孔411内。
具体地，所述上偏光片20的偏光轴与下偏光片30的偏光轴垂直。
请参阅图5及图6，本发明的第二实施例的液晶显示装置与上述第一实施例的区别在于，所述开孔区光源42位于背光模组本体41围成第一开孔411的侧壁上。
具体地，请参阅图5及图6，所述第一开孔411为圆孔。每一子光源421的出光面中心点射出的光线与第一开孔411的中心线相交。为了保证显示时液晶显示面板10对应第一开孔411的区域的亮度均匀，在本发明的第二实施例中，每一子光源421的出光方向与垂直于液晶显示面板10所在平面的方向间的夹角也即每一子光源421相对于垂直于液晶显示面板10所在平面的方向的倾斜角满足：
a’≤arctan(l’/h’)。其中，a’为子光源421的出光方向与垂直于液晶显示面板10所在平面的方向间的夹角，l’为子光源421的中心与第一开孔411的中心线之间的距离，h’为子光源421的中心与液晶显示面板10之间的距离，其余均与第一实施例相同。
进一步地，在本发明的第二实施例中，采用芯片级封装（CSP）等封装方式将开孔区光源42设置在背光模组本体41围成第一开孔411的侧壁上，需要注意的是，本发明的第二实施例在具体制作时，通过封装方法控制开孔区光源42的每一子光源421的出光面朝向液晶显示面板10对应第一开孔411的区域，并且在整体的模组设计时，包覆在背光模组40外侧的边框需要与背光模组本体41围成第一开孔411的侧壁之间预留一定的间距，例如大于0.2mm，以放置开孔区光源42的多个子光源421。
需要说明的是，本发明的液晶显示装置通过在背光模组40的背光模组本体41上设置第一开孔411，并在背光模组本体41上对应第一开孔411设置开孔区光源42，开孔区光源42具有朝向液晶显示面板10对应第一开孔411的区域的出光面，用于朝向液晶显示面板10对应第一开孔411的区域依序发射红光、绿光及蓝光，与此同时彩色滤光层121上对应第一开孔411设置第二开孔1211，而上偏光片20及下偏光片30覆盖第一开孔411，使得本发明的显示装置在熄屏状态下，液晶层13中的液晶分子不发生偏转，光线经下偏光片30对应第一开孔411的区域的偏光作用而产生的线偏振光经过液晶层13后无法穿过上偏光片20对应第一开孔411的区域，使得对应第一开孔411设置的摄像头70不会被使用者观察到，提升液晶显示装置熄屏时的整体感，提升产品的品质；在需要利用摄像头70进行拍摄时也即需要摄像头70捕捉光线时，对液晶层13中对应第一开孔411的液晶分子进行驱动，光线经上偏光片20对应第一开孔411的区域的偏光作用而产生的线偏振光穿过彩色滤光层121的第二开孔1211射入液晶层13对应第一开孔411的区域，随着液晶层13中对应第一开孔411的液晶分子发生偏转而能够穿过下偏光片30对应第一开孔411的区域，而后经过第一开孔411射入摄像头70中，实现摄像头70对上偏光片20一侧的光线进行捕捉，且本发明具体将用于驱动对应第一开孔411的多个第一像素电极1131的多个第一薄膜晶体管1121设置在第一衬底111的框胶区1113，且一个第一薄膜晶体管1121至少与一个第一像素电极1131对应电性连接，也即阵列基板11上对应第一开孔411的区域并不设置薄膜晶体管，从而提升了液晶显示面板10对应第一开孔411区域的开口率，提高需要利用摄像头70进行拍摄时摄像头70的进光量，提升成像质量；而在正常显示的状态下，虽然彩色滤光层121对应第一开孔411设有第二开孔1211，但本发明利用开孔区光源42向液晶显示面板10对应第一开孔411的区域依序发射红光、绿光及蓝光，从而采用场色序法（FSC）技术，通过时间分隔的方式，使得液晶显示面板10中分别与多个第一像素电极1131对应的多个像素能够分时显示红色、绿色及蓝色而进行叠加，最终显示特定的颜色，使得液晶显示装置中摄像头70对应的区域也能够实现彩色显示，提升产品的品质。
综上所述，本发明的液晶显示装置包括液晶显示面板、分别设于液晶显示面板两侧的上偏光片及下偏光片及设于下偏光片远离液晶显示面板一侧的背光模组，背光模组包括背光模组本体及开孔区光源，背光模组本体设有第一开孔，开孔区光源设于背光模组本体上且与第一开孔相对应，开孔区光源具有朝向液晶显示面板对应第一开孔的区域的出光面，用于朝向液晶显示面板对应第一开孔的区域依序发射红光、绿光及蓝光，彩色滤光层设有与第一开孔对应的第二开孔，使得液晶显示装置中对应摄像头的区域能够实现正常的彩色显示，产品品质较高。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明权利要求的保护范围。

Claims (10)

  1. 一种液晶显示装置，包括液晶显示面板、分别设于液晶显示面板两侧的上偏光片及下偏光片及设于下偏光片远离液晶显示面板一侧的背光模组；
    所述液晶显示面板包括相对设置的阵列基板与彩膜基板以及设于阵列基板与彩膜基板之间的液晶层；所述彩膜基板包括彩色滤光层；
    所述背光模组包括背光模组本体及开孔区光源；所述背光模组本体设有第一开孔；所述开孔区光源设于背光模组本体上且与第一开孔相对应，所述开孔区光源具有朝向液晶显示面板对应第一开孔的区域的出光面，所述开孔区光源用于朝向液晶显示面板对应第一开孔的区域依序发射红光、绿光及蓝光；所述彩色滤光层设有与第一开孔对应的第二开孔；所述上偏光片及下偏光片均覆盖第一开孔。
  2. 如权利要求1所述的液晶显示装置，其中，所述阵列基板包括第一衬底以及设于第一衬底靠近液晶层一侧的多个薄膜晶体管及多个像素电极；所述第一衬底包括与第一开孔对应的摄像头区、位于摄像头区外的显示区及位于显示区外的框胶区；所述多个像素电极包括位于摄像头区内的多个第一像素电极，所述多个薄膜晶体管包括位于框胶区内的多个第一薄膜晶体管，每一第一薄膜晶体管对应与多个第一像素电极中的至少一个电性连接。
  3. 如权利要求1所述的液晶显示装置，其中，所述开孔区光源呈环状，包括依次间隔设置的多个子光源，每一子光源具有朝向液晶显示面板对应第一开孔的区域的出光面，每一子光源用于朝向液晶显示面板对应第一开孔的区域依序发射红光、绿光及蓝光。
  4. 如权利要求3所述的液晶显示装置，其中，所述开孔区光源位于背光模组本体靠近液晶显示面板的一侧且围绕于第一开孔的外侧。
  5. 如权利要求4所述的液晶显示装置，其中，所述第一开孔为圆孔；每一子光源的出光面中心点射出的光线与第一开孔的中心线相交；每一子光源的出光方向与垂直于液晶显示面板所在平面的方向间的夹角满足：
    a≤arctan[(l+r)/h]；其中，a为子光源的出光方向与垂直于液晶显示面板所在平面的方向间的夹角，l为子光源的中心与背光模组本体围成第一开孔的侧壁之间的距离，r为第一开孔的半径，h为子光源的中心与液晶显示面板之间的距离。
  6. 如权利要求3所述的液晶显示装置，其中，所述开孔区光源位于背光模组本体围成第一开孔的侧壁上。
  7. 如权利要求6所述的液晶显示装置，其中，所述第一开孔为圆孔；每一子光源的出光面中心点射出的光线与第一开孔的中心线相交；每一子光源的出光方向与垂直于液晶显示面板所在平面的方向间的夹角满足：
    a’≤arctan(l’/h’)；其中，a’为子光源的出光方向与垂直于液晶显示面板所在平面的方向间的夹角，l’为子光源的中心与第一开孔的中心线之间的距离，h’为子光源的中心与液晶显示面板之间的距离。
  8. 如权利要求3所述的液晶显示装置，其中，所述子光源为能够依序发射红光、绿光及蓝光的三色LED；或者，所述子光源包括依次设置的红光LED、绿光LED及蓝光LED。
  9. 如权利要求1所述的液晶显示装置，还包括设于上偏光片远离液晶显示面板一侧的盖板、位于盖板与上偏光片之间的光学胶以及设于下偏光片远离液晶显示面板一侧且与第一开孔对应的摄像头。
  10. 如权利要求1所述的液晶显示装置，其中，所述上偏光片的偏光轴与下偏光片的偏光轴垂直。
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