WO2022100386A1 - 背光模组及显示装置 - Google Patents

背光模组及显示装置 Download PDF

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Publication number
WO2022100386A1
WO2022100386A1 PCT/CN2021/124926 CN2021124926W WO2022100386A1 WO 2022100386 A1 WO2022100386 A1 WO 2022100386A1 CN 2021124926 W CN2021124926 W CN 2021124926W WO 2022100386 A1 WO2022100386 A1 WO 2022100386A1
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WO
WIPO (PCT)
Prior art keywords
sub
backlight module
wall
optical film
retaining wall
Prior art date
Application number
PCT/CN2021/124926
Other languages
English (en)
French (fr)
Inventor
孙含嫣
张明辉
郑辉
Original Assignee
京东方科技集团股份有限公司
北京京东方显示技术有限公司
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Application filed by 京东方科技集团股份有限公司, 北京京东方显示技术有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US17/907,867 priority Critical patent/US20230130661A1/en
Publication of WO2022100386A1 publication Critical patent/WO2022100386A1/zh

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    • 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
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • 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
    • 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

Definitions

  • the invention belongs to the field of display, and in particular relates to a backlight module and a display device.
  • the main function of the backlight module is to provide a uniform and high-brightness illuminator for the liquid crystal panel.
  • the surface light-emitting body assembly enables the liquid crystal panel to display images.
  • the backlight module is one of the key components of the liquid crystal display device, and its luminous effect will directly affect the visual effect of the liquid crystal display panel.
  • traditional backlight modules with front frames and back covers have been unable to meet the demands of high-end consumers.
  • narrow bezels and ultra-thin displays have been gradually developed.
  • the structure of the backlight module will directly affect the frame width and thickness of the display. Therefore, improving the structure of the backlight module is the focus.
  • the present invention aims to solve at least one of the technical problems existing in the prior art, and provides a backlight module and a display device.
  • an embodiment of the present disclosure provides a backlight module, which includes:
  • a back plate comprising a bottom wall and a side wall, the bottom wall and the side wall are connected and define an accommodating portion of the back plate;
  • a light guide plate arranged in the accommodating part
  • the plastic frame includes a blocking wall and a bearing portion, the blocking wall is arranged side by side with the side wall, and is arranged on the side of the side wall away from the light guide plate; the bearing portion is connected with the blocking wall, and on the side wall and the side of the optical film facing away from the bottom wall;
  • the bearing portion includes a first surface facing away from the side wall and opposite to the retaining wall, and at least part of the first surface is protruding toward a side close to the retaining wall.
  • the first surface includes a first subsurface and a second subsurface disposed opposite to the retaining wall, and a first subconnection for connecting the first subsurface and the second subsurface noodle;
  • the first sub-surface and the second sub-surface are arranged in sequence along the direction away from the optical film, and the farthest distance from the first sub-surface and the second sub-surface to the retaining wall not wait.
  • the width of the first sub-surface is smaller than the width of the second sub-surface.
  • the farthest distance from the first sub-surface to the retaining wall is greater than the farthest distance from the second sub-surface to the retaining wall.
  • the first sub-surface is substantially parallel to the second sub-surface.
  • At least part of the position of the first surface includes a first sub-surface, a second sub-surface, and a third sub-surface disposed opposite to the retaining wall, for connecting the first sub-surface and the second sub-surface a first sub-connecting surface, and a second sub-connecting surface for connecting the second sub-surface and the third sub-surface;
  • the first sub-surface, the second sub-surface, and the third sub-surface are arranged in sequence along the direction away from the optical film, and the first sub-surface, the second sub-surface, the The furthest distances from the three sub-surfaces to the retaining wall vary.
  • the farthest distance from at least one of the first sub-surface and the third sub-surface to the retaining wall is greater than the farthest distance from the second sub-surface to the retaining wall .
  • the width of at least one of the first sub-surface and the third sub-surface is smaller than the width of the second sub-surface.
  • first sub-surface, the second sub-surface, and the third sub-surface are substantially parallel.
  • the height of the first surface in the direction away from the optical film is not less than 0.8 mm.
  • the carrying portion includes a second surface disposed opposite to the optical film, and a dihedral angle is formed between the extending surface of the second surface and the plane where the optical film is located.
  • the dihedral angle is not greater than 5°.
  • the first surface includes a fog surface structure.
  • the protruding position on the first surface toward the retaining wall surrounds the circumference of the first surface.
  • the protruding position on the first surface toward the side close to the retaining wall surrounds the circumferential direction of the bearing portion.
  • the backlight module further includes a reflective sheet, which is arranged in the accommodating portion and is located on the side of the light guide plate away from the optical film.
  • a reinforcing rib is formed on the bottom wall; the width of the reinforcing rib is 0.2mm-1.5mm.
  • the first surface includes at least one of a stepped surface, a grooved surface, and a wavy surface.
  • an embodiment of the present disclosure provides a display device, which includes any one of the above-mentioned backlight modules, and a display panel disposed on the carrying portion.
  • the display device includes a display area, and the distance from the retaining wall to the boundary of the display area is not greater than 7 mm. .
  • FIG. 1 is a schematic structural diagram of an exemplary display device.
  • FIG. 2 is a schematic diagram of a shadow of the display device shown in FIG. 1 .
  • FIG. 3 is a schematic structural diagram of a backlight module and a display panel according to an embodiment of the disclosure.
  • FIG. 4 is a schematic diagram of a first surface according to an embodiment of the disclosure.
  • Figure 5 shows the corresponding relationship between the light exit angle and the brightness.
  • FIG. 6 is a schematic diagram of a shadow of a display device applying the backlight module of the embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of another first surface according to an embodiment of the disclosure.
  • FIG. 8 is a schematic structural diagram of another backlight module and a display panel according to an embodiment of the disclosure.
  • FIG. 9 is a schematic structural diagram of another backlight module and a display panel according to an embodiment of the disclosure.
  • FIG. 1 is a schematic structural diagram of an exemplary display device; as shown in FIG. 1 , the display device is divided into a display area Q1 and a peripheral area Q2 surrounding the display area Q1; the display device includes a backlight module and a The display panel 10 of the light-emitting surface of the backlight module.
  • the display panel 10 may include a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer formed between the first substrate and the second substrate.
  • the first substrate includes but is not limited to an array substrate
  • the second substrate includes but is not limited to a color filter substrate.
  • the backlight module includes a back plate 1 , a plastic frame 2 , an outer frame 3 , a light guide plate 5 , a light source assembly, an optical film 6 , a reflection sheet 4 , and the like.
  • the back plate 1 includes a bottom wall 11 and a side wall 12.
  • the bottom wall 11 and the side wall 12 are connected to define an accommodating portion, and the reflective sheet 4, the light guide plate 5 and the optical film 6 are arranged in the accommodating portion, and along the direction away from the bottom
  • the directions of the walls 11 are set sequentially.
  • the light source component may be an LED light bar, and the LED light bar is arranged on the side wall 12 of the backlight and is opposite to at least one side of the light guide plate 5 .
  • the plastic frame 2 includes a blocking wall 21 and a bearing portion 22; the blocking wall 21 is arranged side by side with the side wall 12 of the backplane 1, and the bearing portion 22 is connected to the blocking wall 21, and is located on the sidewall 12 of the backplane 1 away from the optical film 6 One side of the bottom wall 11 of the back panel 1 ; the carrying portion 22 of the plastic frame 2 is used to carry the display panel 10 .
  • the outer frame 3 is disposed outside the plastic frame 2 and the display panel 10 , and is used to fix the plastic frame 2 and the display panel 10 .
  • FIG. 2 is a schematic diagram of shadows of the display device shown in FIG. 1 ; it can be seen from FIG.
  • FIG. 2 illustrates a shadow that appears on the printed circuit board side of the display device, and correspondingly, the same problem may also occur on other sides of the display panel.
  • FIG. 3 is a schematic structural diagram of a backlight module display panel 10 according to an embodiment of the disclosure; as shown in FIG. 3 , an embodiment of the disclosure provides a backlight module, which cooperates with the display panel 10 A display device is formed.
  • the backlight module may include a backplane 1, a plastic frame 2, a reflective sheet 4, a light guide plate 5, an optical film 6, an LED light bar, etc.; wherein, the backplane 1 includes a bottom wall 11 and a side wall 12;
  • the bottom wall 11 is disposed opposite to the display panel 10 , and the side wall 12 extends toward the direction of the display panel 10 , is connected with the bottom wall 11 , and defines an accommodating portion.
  • the reflective sheet 4 , the light guide plate 5 and the optical film 6 are all arranged in the accommodating portion, and they are arranged in sequence along the direction away from the bottom wall 11 .
  • the plastic frame 2 includes a blocking wall 21 and a bearing portion 22; the blocking wall 21 is arranged side by side with the side wall 12 of the backplane 1, and the bearing portion 22 is connected to the blocking wall 21, and is located on the sidewall 12 of the backplane 1 away from the optical film 6 one side of the bottom wall 11 .
  • the bearing portion 22 includes a first surface S1 opposite to the blocking wall 21 and facing away from the side wall 12 of the back plate 1 . In particular, in the embodiment of the present disclosure, at least part of the position on the first surface S1 of the bearing portion 22 protrudes toward the side close to the retaining wall 21 (hereinafter referred to as the concave position).
  • the first surface S1 of the bearing portion 22 of the plastic frame 2 of the backlight module protrudes toward the side close to the retaining wall 21, that is, compared with the related art , at least part of the position on the first surface S1 can be moved to the plane close to the retaining wall 21, so the optical path of the light irradiated to the concave position of the first surface S1 is elongated, and the light intensity is weakened at this time. , the light reflected to the human eye will also be reduced, so it can also effectively alleviate the problem of shadows.
  • the maximum distance between the first surface S1 of the bearing portion 22 and the retaining wall 21 is not greater than 7 mm, that is, the maximum width of the plastic frame 2 is not greater than 7 mm. Therefore, the present disclosure
  • the backlight module of the embodiment helps to realize a narrow bezel.
  • the maximum distance between the first surface S1 of the bearing part 22 and the retaining wall 21 is about 6 mm; in other products, the distance between the first surface S1 of the bearing part 22 and the retaining wall 21 is about 6 mm.
  • the maximum distance is not more than 5mm.
  • the maximum distance between the first surface S1 of the bearing portion 22 and the retaining wall 21 may also be set at about 1.0-1.2 mm, so as to realize the design of the narrow frame as much as possible.
  • the protruding position on the first surface S1 toward the side close to the retaining wall 21 surrounds the circumferential direction, that is, the first surface S1 includes within a circle that protrudes toward the side close to the retaining wall 21 . Concave. In this way, the reflection of the light irradiated on the first surface S1 to the human eye can be reduced as much as possible, and the occurrence of dark shadows on the display image in the peripheral area Q2 of the display device can be effectively alleviated.
  • the following description will be given by taking as an example that the first surface S1 includes an inner concave surface protruding toward the side close to the retaining wall 21 .
  • FIG. 4 is a schematic diagram of a first surface S1 according to an embodiment of the disclosure; as shown in FIGS. 3 and 4 , the first surface S1 of the bearing portion 22 of the plastic frame 2 is along a plane perpendicular to the plane where the optical film 6 is located. The section is stepped. The following description will be given by taking the example that the cross section of the first surface S1 of the bearing portion 22 along the plane perpendicular to the plane where the optical film 6 is located is a first-step step.
  • the first surface S1 of the bearing portion 22 includes a first sub-surface S11 and a second sub-surface S12 disposed opposite to the retaining wall 21, and is used for connecting the first sub-surface S11 and the second sub-surface S12.
  • the first sub-connection face S13 wherein, the farthest distances from the first sub-surface S11 and the second sub-surface S12 to the retaining wall 21 are not equal. Continuing to refer to FIG. 2 , the farthest distance between the first sub-surface S11 and the retaining wall 21 is greater than the farthest distance between the second sub-surface S12 and the retaining wall 21. Most of the light emitted through the optical film 6 is irradiated on the second sub-surface S12, and a small part is irradiated on the first sub-surface S11, because the distance between the second sub-surface S12 and the retaining wall 21 is compared with the conventional design. is shortened.
  • the optical path of the light irradiated on the second sub-surface S12 is elongated, and the light intensity is weakened.
  • the light with a small exit angle through the optical film 6 is reflected to the peripheral area through the second sub-surface S12, and is absorbed by the black matrix in the peripheral area; the light with a large exit angle through the optical film 6 Due to the relatively low brightness of the light itself (as shown in Figure 5, the corresponding relationship between the light exit angle and the brightness), the light intensity of the second sub-surface S12 is elongated and the light intensity is further weakened, and the lower brightness is more difficult to be seen by the human eye. aware.
  • FIG. 6 is a schematic diagram of a shadow of a display device using the backlight module according to an embodiment of the present disclosure. It can be seen from FIG. 6 that the shadow is significantly reduced.
  • the width W1 (hereinafter referred to as the width) of the first sub-surface S11 in the direction away from the optical film 6 is not less than 0.8 mm.
  • the maximum width W of the first surface S1 of the bearing portion 22 is 2.1 mm, the width W1 of the first sub-surface S11 is 0.9 mm, and the width W2 of the second sub-surface S12 is 1.1 mm; the maximum width W of the first surface S1 of the bearing portion 22
  • the width W is 2.3 mm, the width W1 of the first sub-surface S11 is 1.1 mm, and the width W2 of the second sub-surface S12 is 1.2 mm.
  • the first sub-surface S11 and the second sub-surface S12 are arranged in sequence along the direction away from the optical film 6 , and the distance between the first sub-surface S11 and the blocking wall 21 is the farthest The distance is greater than the farthest distance between the second sub-surface S12 and the retaining wall 21 .
  • the first sub-surface S11 and the second sub-surface S12 may be substantially parallel or substantially parallel to the plane where the blocking wall 21 is located, and the first sub-connecting surface S13 is parallel or substantially parallel to the plane where the optical film 6 is located.
  • the first sub-surface S11 and the second sub-surface S12 may also have a certain angle with the plane where the retaining wall 21 is located.
  • FIG. 6 is a schematic diagram of another first surface S1 according to an embodiment of the disclosure; as shown in FIG. 5 , the first surface S1 of the bearing portion 22 of the plastic frame 2 is perpendicular to the direction of the optical film 6 .
  • the cross section of the plane is groove-like.
  • the first surface S1 of the bearing portion 22 includes a first sub-surface S11 , a second sub-surface S12 and a third sub-surface S14 disposed opposite to the retaining wall 21 for connecting the first sub-surface S11 and the second sub-surface The first sub-connection surface S13 of S12, and the second sub-connection surface S15 for connecting the third sub-connection surface of the second sub-surface S12 and the third sub-surface S14.
  • the farthest distance between at least one of the first sub-surface S11 and the third sub-surface S14 and the retaining wall 21 is different from the farthest distance between the second sub-surface S12 and the retaining wall 21 .
  • the farthest distances between the first subsurface S11 and the third subsurface S14 to the retaining wall 21 are equal, and the farthest distance between the two to the retaining wall 21 is greater than that between the second subsurface S12 and the retaining wall 21
  • the farthest distances from the first sub-surface S11 and the third sub-surface S14 to the retaining wall 21 may also be different.
  • At least one of the width of the first sub-surface S11 and the width of the third sub-surface S14 may be smaller than the width of the second sub-surface S12, in this way, the irradiation can also be effectively reduced
  • the light is reflected to the human eye after reaching the bearing portion 22 .
  • the first sub-surface S11 , the second sub-surface S12 , and the third sub-surface S14 are arranged in sequence along the direction away from the optical film 6
  • the first sub-surface S11 and the third sub-surface S11 are arranged in sequence along the direction away from the optical film 6 .
  • the farthest distance between the sub-surface S14 and the retaining wall 21 is greater than the farthest distance between the second sub-surface S12 and the retaining wall 21 .
  • the first sub-surface S11, the second sub-surface S12, and the third sub-surface S14 may be substantially parallel or parallel to the plane where the retaining wall 21 is located.
  • first sub-connecting surface S13 and the second sub-connecting surface S15 are both connected to the optical film.
  • the plane on which the sheet 6 is located is parallel or substantially not.
  • first sub-surface S11 , the second sub-surface S12 , and the third sub-surface S14 may also have a certain angle with the plane where the retaining wall 21 is located.
  • FIG. 7 is a schematic structural diagram of another backlight module and display panel 10 according to an embodiment of the disclosure; as shown in FIG. 7 , the bearing portion 22 of the plastic frame 2 not only includes the above-mentioned first surface S1, It also includes a second surface that is close to the optical film 6 and is opposite to the optical film 6 .
  • the extending surface of the second surface of the bearing portion 22 has a dihedral angle with the plane where the optical film 6 is located, and the dihedral angle can make the width of the first sub-surface S11 in the direction away from the optical film 6 as small as possible to reduce
  • the small first surface S1 reflects light to the human eye.
  • the dihedral angle ⁇ between the extending surface of the second surface of the bearing portion 22 and the plane where the optical film 6 is located is less than 5°.
  • a matte structure is formed on the first surface S1 of the bearing portion 22 of the plastic frame 2, that is, the first surface S1 is roughened, which can reduce specular reflection and increase diffuse reflection, thereby consuming the radiation on the light on the first surface S1 , thereby reducing the light reflected from the first surface S1 to the display panel 10 .
  • the fog surface structure on the first surface S1 can be formed by performing fog surface treatment on the first surface S1, or by attaching a fog surface film layer on the first surface S1 to form the fog surface structure.
  • the bearing portion 22 of the plastic frame 2 and the retaining wall 21 may be integrally formed.
  • the plastic frame 2 is formed by injection molding.
  • the bottom wall 11 of the back plate 1 is formed with reinforcing ribs.
  • the reinforcing ribs on the bottom wall 11 of the back plate 1 are formed by a sheet metal process It is formed as a reinforcing rib structure to increase the strength of the back plate 1 .
  • the width of the rib is 0.2mm-1.5mm.
  • the width of the reinforcing rib is 0.5mm, 0.6mm, 0.8mm, 1.1mm, 1.3mm and so on.
  • reinforcing ribs may not be provided in some products.
  • the width of the reinforcing rib structure is not specifically limited, and can be specifically set according to product requirements.
  • the optical film 6 includes structures such as a diffusion sheet, a prism sheet, and the like.
  • the backlight module not only includes the above structure but also includes an outer frame 3; the outer frame 3 is arranged on the outside of the plastic frame 2 and the display panel 10, for Fix the display panel 10 and the plastic frame 2 together.
  • the outer frame 3 includes a front frame portion 31 located on the display surface side of the display panel 10 , and a side frame portion 32 arranged side by side with the retaining wall 21 of the plastic frame 2 .
  • 8 is a schematic structural diagram of another backlight module and a display panel 10 according to an embodiment of the disclosure; as shown in FIG. 8 , the backlight module may not include the outer frame 3 , which can further narrow the display device.
  • an embodiment of the present disclosure provides a display device including the above-mentioned backlight module and a display panel 10 .
  • the display panel 10 is disposed on the side of the bearing portion 22 of the plastic frame 2 away from the optical film 6 .
  • the front frame portion 31 of the outer frame 3 is located on the display surface side of the display panel 10 .
  • the display device adopts the above-mentioned backlight module
  • the first surface S1 of the bearing portion 22 of the plastic frame 2 of the backlight module at least part of the position is toward the side close to the blocking wall 21 .
  • Protruding that is to say, relative to the related art, at least part of the position on the first surface S1 can be moved closer to the plane where the blocking wall 21 is located, so that the light reflected to the human eye through the first surface S1 can be effectively reduced , so that a dark shadow appears on the display image in the peripheral area Q2 of the display device, thereby improving the display effect of the display device.
  • the display device can be any product or component with a display function, such as a liquid crystal panel, a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, and the like.
  • a display function such as a liquid crystal panel, a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, and the like.
  • the display device of this embodiment may also include other conventional structures, such as a power supply unit, a display driving unit, and the like.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)

Abstract

背光模组及显示装置，背光模组包括：背板(1)，包括底壁(11)和侧壁(12)，底壁(11)和侧壁(12)连接并限定出背板(1)的容置部；导光板(5)，设置在容置部内；光学膜片(6)，设置在导光板(5)背离底壁(11)的一侧；胶框(2)，包括挡墙(21)和承载部(22)，挡墙(21)与侧壁(12)并排设置，且设置在侧壁(12)背离导光板(5)的一侧；承载部(22)与挡墙(21)连接，且位于侧壁(12)和光学膜片(6)背离底壁(11)的一侧；其中，承载部(22)包括背离侧壁(12)，且与挡墙(21)相对设置的第一表面(S1)，第一表面(S1)上的至少部分位置向靠近挡墙(21)的一侧凸出。背光模组与显示面板(10)配合形成显示装置。

Description

背光模组及显示装置 技术领域
本发明属于显示领域，具体涉及一种背光模组及显示装置。
背景技术
在液晶显示领域，背光模组的主要功能在于为液晶面板提供均匀、高亮度的发光体，基本原理为将常用的线型或者点发光体，透过有效光机构转化为高亮度与分布均匀的面发光体组件，使得液晶面板能显示影像。背光模组作为液晶显示装置的关键零组件之一，它的发光效果将直接影响到液晶显示面板的视觉效果。随着技术的发展和消费者的外观需求提高，带有前框和后盖的传统背光模组已经无法满足高端消费者的需求。为了满足消费者的更高需求，窄边框和超薄的显示器逐步发展起来。而背光模组的结构将直接影响着显示器的边框宽度和厚度，因此，改进背光模组的结构是焦点。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一，提供一种背光模组及显示装置。
第一方面，本公开实施例提供一种背光模组，其包括：
背板，包括底壁和侧壁，所述底壁和所述侧壁连接并限定出所述背板的容置部；
导光板，设置在所述容置部内；
光学膜片，设置在所述导光板背离所述底壁的一侧；
胶框，包括挡墙和承载部，所述挡墙与所述侧壁并排设置，且设置在所述侧壁背离所述导光板的一侧；所述承载部与所述挡墙连接，且位于所述侧壁和所述光学膜片背离所述底壁的一侧；其中，
所述承载部包括背离所述侧壁，且与所述挡墙相对设置的第一表面，所 述第一表面上的至少部分位置向靠近所述挡墙的一侧凸出。
其中，所述第一表面的至少部分位置包括与所述挡墙相对设置的第一子表面和第二子表面，以及用于连接所述第一子表面和第二子表面的第一子连接面；
所述第一子表面和所述第二子表面沿背离所述光学膜片的方向依次设置，且所述第一子表面与所述第二子表面到所述挡墙之间的最远距离不等。
其中，沿背离所述光学膜片的方向上，所述第一子表面宽度小于所述第二子表面的宽度。
其中，所述第一子表面到所述挡墙之间的最远距离大于与所述第二子表面到所述挡墙之间的最远距离。
其中，所述第一子表面与所述第二子表面大致平行。
其中，所述第一表面的至少部分位置包括与所述挡墙相对设置的第一子表面、第二子表面、第三子表面，用于连接所述第一子表面和第二子表面的第一子连接面，以及用于连接所述第二子表面和所述第三子表面的第二子连接面；
所述第一子表面、所述第二子表面、所述第三子表面沿背离所述光学膜片的方向依次设置，且所述第一子表面、所述第二子表面、所述第三子表面到所述挡墙之间的最远距离不等。
其中，所述第一子表面和所述第三子表面中的至少一者到所述挡墙之间的最远距离，大于所述第二子表面到所述挡墙之间的最远距离。
其中，其中，沿背离所述光学膜片的方向上，所述第一子表面和所述第三子表面中的至少一者的宽度小于所述第二子表面的宽度。
其中，所述第一子表面、所述第二子表面、所述第三子表面大致平行。
其中，所述第一表面在背离所述光学膜片方向上的高度不小于0.8mm。
其中，所述承载部包括与所述光学膜片相对设置的第二表面，所述第二表面的延伸面与所述光膜膜片所在平面之间具有二面角。
其中，所述二面角不大于5°。
其中，所述第一表面上包括雾面结构。
其中，所述第一表面上向靠近所述挡墙凸出的位置环绕所述第一表面的周向。
其中，所述第一表面上向靠近所述挡墙的一侧凸出的位置环绕所述承载部的周向。
其中，所述背光模组还包括反射片，设置在所述容置部内，且位于所述导光板背离所述光学膜片的一侧。
其中，所述底壁上形成有加强筋；所述加强筋的宽度为0.2mm-1.5mm。其中，所述第一表面包括台阶面、凹槽面、波浪面中的至少一种。
第二方面，本公开实施例提供一种显示装置，其包括上述的任意一种的背光模组，以及设置在所述承载部上的显示面板。
其中，所述显示装置包括显示区，所述挡墙到所述显示区边界的距离不大于7mm。。
附图说明
图1为一种示例性的显示装置的结构示意图。
图2为图1所示的显示装置的暗影示意图。
图3为本公开实施例的一种背光模组和显示面板的结构示意图。
图4为本公开实施例的一种第一表面的示意图。
图5为光线出射角度和亮度的对应关系。
图6为应用本公开实施例的背光模组的显示装置的暗影示意图。
图7为本公开实施例的另一种第一表面的示意图。
图8为本公开实施例的另一种背光模组和显示面板的结构示意图。
图9为本公开实施例的另一种背光模组和显示面板的结构示意图。
具体实施方式
为了使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本 发明作进一步地详细描述，显然，所描述的实施例仅是本发明的部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
附图中各部件的形状和大小不反映真实比例，目的只是为了便于对本发明实施例的内容的理解。
除非另外定义，本公开使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。同样，“一个”、“一”或者“该”等类似词语也不表示数量限制，而是表示存在至少一个。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
图1为一种示例性的显示装置的结构示意图；如图1所示，该显示装置其划分为显示区Q1和环绕显示区Q1的周边区Q2；该显示装置包括背光模组和位于所述背光模组出光面的显示面板10。其中，显示面板10可以包括相对设置的第一基板和第二基板，以及形成在第一基板和第二基板之间的液晶层。第一基板包括但不限于阵列基板，第二基板包括但不限于彩膜基板。背光模组包括背板1、胶框2、外框3、导光板5、光源组件、光学膜片6、反射片4等。其中，背板1包括底壁11和侧壁12，底壁11和侧壁12连接限定出容置部，反射片4、导光板5和光学膜片6设置在容置部内，且沿背离底壁11的方向依次设置。光源组件可以为LED灯条，该LED灯条设置在背光的侧壁12上，且与导光板5的至少一个侧边相对设置。胶框2包括挡墙 21和承载部22；挡墙21与背板1的侧壁12并排设置，承载部22与挡墙21连接，且位于背板1的侧壁12和光学膜片6背离背板1的底壁11的一侧；胶框2的承载部22用于承载显示面板10。外框3设置在胶框2和显示面板10的外侧，用以将胶框2和显示面板10相固定。
发明人发现，随着显示装置的窄边化的发展，胶框2的外边缘到显示装置显示区Q1的距离则越来越近，在该种情况下，经由导光板5出射的光照射至承载部22的第一表面S1后，会有部分光线显示区Q1射出进入人眼，与此同时在显示画面的边缘形成暗影，该种情况严重时，会导致显示面板10显示区Q1的部分像素被遮挡，进而影响显示装置的显示。图2为图1所示的显示装置的暗影示意图；由图2可以看出相关技术中的显示装置中光照射至承载部22的第一表面S1后会在显示区边缘出现暗影。需要说明的是，图2示意出显示装置的印刷电路板侧出现的暗影，相应的在显示面板的其它侧也可能会出现相同的问题。
针对上述问题，在本公开实施例中提供如下技术方案。
第一方面，图3为本公开实施例的一种背光模组显示面板10的结构示意图；如图3所示，本公开实施例提供一种背光模组，该背光模组与显示面板10配合形成显示装置。该背光模组可以包括背板1、胶框2、反射片4、导光板5和光学膜片6、LED灯条等；其中，背板1包括底壁11和侧壁12；背板1的底壁11与显示面板10相对设置，侧壁12朝向显示面板10的方向延伸，且与底壁11连接，并限定出容置部。反射片4、导光板5和光学膜片6均设置在容置部，且二者沿背离底壁11的方向依次设置。胶框2包括挡墙21和承载部22；挡墙21与背板1的侧壁12并排设置，承载部22与挡墙21连接，且位于背板1的侧壁12和光学膜片6背离底壁11的一侧。承载部22包括与挡墙21的相对、且与背离背板1的侧壁12的第一表面S1。特别的是，在本公实施例中承载部22的第一表面S1上的至少部分位置向靠近挡墙21的一侧凸出(以下简称内凹位置)。
在本公开实施例中，由于在背光模组的胶框2的承载部22的第一表面S1上，至少部分位置向靠近所述挡墙21的一侧凸出，也就是说相对于相关技术，可以将第一表面S1上的至少部分位置向靠近挡墙21所在平面移动，因此照射到线照射至第一表面S1内凹位置的光线的光程被拉长，此时光线强度均被削弱，反射至人眼的光线也会随之减少，因此，同样可以有效缓解暗影的问题。
参照图3所示，在一些实施例中，承载部22的第一表面S1到挡墙21之间的距离的最大距离不大于7mm，也即胶框2的最大宽度不大于7mm，因此本公开实施例的背光模组有助于实现窄边框。例如：在一些产品中承载部22的第一表面S1到挡墙21之间的距离的最大距离在6mm左右；另外在一些产品中承载部22的第一表面S1到挡墙21之间的距离的最大距离不大于5mm。在本公开实施例中还可以将承载部22的第一表面S1到挡墙21之间的距离的最大距离设置在1.0-1.2mm左右，以尽可能的实现窄边框设设计。
在一些实施例中，第一表面S1上向靠近挡墙21的一侧凸出的位置环绕周向，也即在第一表面S1上包括向靠近挡墙21的一侧凸出的一圈内凹面。这样一来，可以尽可能的降低照射至第一表面S1的光线反射至人眼，有效缓解显示画面在显示装置的周边区Q2出现暗影的情况。以下均以第一表面S1上包括向靠近挡墙21的一侧凸出的一圈内凹面为例进行说明。
在一个示例中，图4为本公开实施例的一种第一表面S1的示意图；如图3和4，胶框2的承载部22的第一表面S1沿垂直于光学膜片6所在平面的截面呈台阶状。以下以承载部22的第一表面S1沿垂直于光学膜片6所在平面的截面为一阶台阶为例进行说明。具体的，承载部22的第一表面S1包括与挡墙21相对设置的第一子表面S11和第二子表面S12，用于连接第一子表面S11和第二子表面S12的第一子连接面S13。其中，第一子表面S11和第二子表面S12到挡墙21之间的最远距离不等。继续参照图2，第一子表面S11到挡墙21之间的最远距离大于第二子表面S12到挡墙21之间的最远距 离。经由光学膜片6出射的光线大部分照射到第二子表面S12上，小部分照射到第一子表面S11上，由于第二子表面S12到挡墙21之间的距离相较常规设计而言被缩短，相较照射到第一子表面S11，照射到第二子表面S12上的光线光程被拉长，光强被削弱。照射到第二子表面S12上的光线中，经由光学膜片6出射角度小的光线经过第二子表面S12反射至周边区，被周边区的黑矩阵吸收；经由光学膜片6出射角度大的光线由于本身亮度相对较低(如图5所示的光线出射角度和亮度的对应关系)，照射到第二子表面S12光程被拉长光强被进一步削弱，亮度更低更不易被人眼察觉。从而可以有效的减少和降低照射至承载部22而反射至人眼的光线的数量和光强，达到消除和缓解暗影的目的。另外，如图4所示，沿背离光学膜片6的方向上，第一子表面S11宽度W1可以小于第二子表面S12的宽度W2，以此方式，同样可以有效减少照射至承载部22而反射至人眼的光线。图6为应用本公开实施例的背光模组的显示装置的暗影示意图，由图6可以看出暗影明显减弱。
例如：在一些实施例中，在一些实施例中，第一子表面S11在背离光学膜片6方向的宽度W1(以下简称宽度)不小于0.8mm。承载部22的第一表面S1的最大宽度W为2.1mm，第一子表面S11的宽度W1为0.9mm，第二子表面S12的宽度W2为1.1mm；承载部22的第一表面S1的最大宽度W为2.3mm，第一子表面S11的宽度W1为1.1mm，第二子表面S12的宽度W2为1.2mm，发明人对这两组数据验证，显示面板10边缘暗影问题明显得到改善。
例如：继续参照图3，在一些实施例中，第一子表面S11和第二子表面S12沿背离光学膜片6的方向依次设置，且第一子表面S11到挡墙21之间的最远距离大于第二子表面S12到挡墙21之间的最远距离。其中，第一子表面S11和第二子表面S12可以与挡墙21所在平面大致平行或者平行，此时第一子连接面S13与光学膜片6所在平面平行或者大致平行。当然，第一子表面S11和第二子表面S12也可以与挡墙21所在平面存在一定的夹角。
在另一个示例中，图6为本公开实施例的另一种第一表面S1的示意图； 如图5所示，胶框2的承载部22的第一表面S1沿垂直于光学膜片6所在平面的截面呈凹槽状。具体的，承载部22的第一表面S1包括与挡墙21相对设置的第一子表面S11、第二子表面S12、第三子表面S14，用于连接第一子表面S11和第二子表面S12的第一子连接面S13，以及用于连接第二子表面S12和第三子表面S14第三子连接面的第二子连接面S15。其中，第一子表面S11和第三子表面S14中的至少一者到挡墙21之间的最远距离与第二子表面S12到挡墙21之间的最远距离不等。例如：第一子表面S11和第三子表面S14到挡墙21之间的最远距离相等，且二者到挡墙21之间的最远距离大于第二子表面S12到挡墙21之间的最远距离；当然，第一子表面S11和第三子表面S14到挡墙21之间的最远距离也可以不同。另外，沿背离光学膜片6的方向上，第一子表面S11宽度和第三子表面S14的宽度中的至少一者可以小于第二子表面S12的宽度，以此方式，同样可以有效减少照射至承载部22而反射至人眼的光线。
例如：继续参照图6，在一些实施例中，第一子表面S11、第二子表面S12、第三子表面S14沿背离光学膜片6的方向依次设置，且第一子表面S11和第三子表面S14到挡墙21之间的最远距离均大于第二子表面S12到挡墙21之间的最远距离。其中，第一子表面S11、第二子表面S12、第三子表面S14可以与挡墙21所在平面大致平行或者平行，此时第一子连接面S13和第二子连接面S15均与光学膜片6所在平面平行或者大致不行。当然，第一子表面S11、第二子表面S12、第三子表面S14也可以与与挡墙21所在平面存在一定的夹角。
在另一个示例中，图7为本公开实施例的另一种背光模组和显示面板10的结构示意图；如图7所示，胶框2的承载部22不仅包括上述的第一表面S1，而且还包括靠近光学膜片6，且与光学膜片6相对设置的第二表面。承载部22的第二表面的延伸面与光学膜片6所在平面具有二面角，该二面角可以使得第一子表面S11在背离光学膜片6方向的宽度尽量可能小，以尽可 能减小第一表面S1反射至人眼的光线。例如：承载部22的第二表面的延伸面与光学膜片6所在平面之间的二面角α小于5°。
在一些实施例中，在胶框2的承载部22的第一表面S1上形成有雾面结构，也即使得第一表面S1粗糙化，这样可以减少镜面反射，增加漫反射，从而消耗照射在第一表面S1上的光线，从而降低第一表面S1反射向显示面板10的光线。
其中，第一表面S1上的雾面结构可以通过对第一表面S1进行雾面处理形成，还可以通过在第一表面S1上贴附雾面膜层形成雾面结构。
在一些实施例中，胶框2的承载部22和挡墙21可以为一体成型结构。例如：胶框2采用注塑成型形成。
继续参照图2，在一些实施例中，背板1的底壁11形成有加强筋背板1的底壁11在一些实施例中，背板1的底壁11上的加强筋通过钣金工艺形成，作为加强筋结构，用以增加背板1的强度。在一些实施例中，加强筋的宽度为0.2mm-1.5mm。例如：加强筋的宽度为0.5mm、0.6mm、0.8mm、1.1mm、1.3mm等等。当然，在一些产品中也可以不设置加强筋。在本公开实施例中，对加强筋结构的宽度不作具体限定，根据产品要求可以具体设置。继续参照图2，在一些实施例中，光学膜片6包括扩散片、棱镜片等结构。
如图3、4、6-7所示，在一些实施例中，背光模组不仅包括上述结构而且还包括外框3；该外框3设置在胶框2和显示面板10的外侧，用于将显示面板10和胶框2相固定。例如：外框3包括位于显示面板10显示面侧的前框部分31，以及与胶框2的挡墙21并排设置的侧框部分32。图8为本公开实施例的另一种背光模组和显示面板10的机构示意图；如图8所示，背光模组可以不包括外框3，这样可以进一步使得显示装置实现窄边化。
第二方面，本公开实施例提供一种显示装置，其包括上述的背光模组，以及显示面板10。其中，显示面板10设置在胶框2的承载部22背离光学膜片6的一侧。外框3的前框部分31位于显示面板10的显示面侧。
在本公开实施例中，由于显示装置采用上述的背光模组，因此在背光模组的胶框2的承载部22的第一表面S1上，至少部分位置向靠近所述挡墙21的一侧凸出，也就是说相对于相关技术，可以将第一表面S1上的至少部分位置向靠近挡墙21所在平面移动，这样一来，可以有效的减少经由第一表面S1反射至人眼的光线，从而显示画面在显示装置的周边区Q2出现暗影的情况，进而改善显示装置的显示效果。
该显示装置可以为：液晶面板、手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。
当然，本实施例的显示装置中还可以包括其他常规结构，如电源单元、显示驱动单元等。
可以理解的是，以上实施方式仅仅是为了说明本发明的原理而采用的示例性实施方式，然而本发明并不局限于此。对于本领域内的普通技术人员而言，在不脱离本发明的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本发明的保护范围。

Claims (20)

  1. 一种背光模组，其包括：
    背板，包括底壁和侧壁，所述底壁和所述侧壁连接并限定出所述背板的容置部；
    导光板，设置在所述容置部内；
    光学膜片，设置在所述导光板背离所述底壁的一侧；
    胶框，包括挡墙和承载部，所述挡墙与所述侧壁并排设置，且设置在所述侧壁背离所述导光板的一侧；所述承载部与所述挡墙连接，且位于所述侧壁和所述光学膜片背离所述底壁的一侧；其中，
    所述承载部包括背离所述侧壁，且与所述挡墙相对设置的第一表面，所述第一表面上的至少部分位置向靠近所述挡墙的一侧凸出。
  2. 根据权利要求1所述的背光模组，其中，所述第一表面的至少部分位置包括与所述挡墙相对设置的第一子表面和第二子表面，以及用于连接所述第一子表面和第二子表面的第一子连接面；
    所述第一子表面和所述第二子表面沿背离所述光学膜片的方向依次设置，且所述第一子表面与所述第二子表面到所述挡墙之间的最远距离不等。
  3. 根据权利要求2所述的背光模组，其中，沿背离所述光学膜片的方向上，所述第一子表面宽度小于所述第二子表面的宽度。
  4. 根据权利要求2所述的背光模组，其中，所述第一子表面到所述挡墙之间的最远距离大于与所述第二子表面到所述挡墙之间的最远距离。
  5. 根据权利要求2所述的显示面板，其中，所述第一子表面与所述第二子表面大致平行。
  6. 根据权利要求1所述的背光模组，其中，所述第一表面的至少部分位置包括与所述挡墙相对设置的第一子表面、第二子表面、第三子表面，用于连接所述第一子表面和第二子表面的第一子连接面，以及用于连接所述第 二子表面和所述第三子表面的第二子连接面；
    所述第一子表面、所述第二子表面、所述第三子表面沿背离所述光学膜片的方向依次设置，且所述第一子表面、所述第二子表面、所述第三子表面到所述挡墙之间的最远距离不等。
  7. 根据权利要求4所述的背光模组，其中，所述第一子表面和所述第三子表面中的至少一者到所述挡墙之间的最远距离，大于所述第二子表面到所述挡墙之间的最远距离。
  8. 根据权利要求4所述的背光模组，其中，沿背离所述光学膜片的方向上，所述第一子表面和所述第三子表面中的至少一者的宽度小于所述第二子表面的宽度。
  9. 根据权利要求4所述的背光模组，其中，所述第一子表面、所述第二子表面、所述第三子表面大致平行。
  10. 根据权利要求2-9中任一项所述的背光模组，其中，所述第一表面在背离所述光学膜片方向上的高度不小于0.8mm。
  11. 根据权利要求2-9中任一项所述的背光模组，其中，所述承载部包括与所述光学膜片相对设置的第二表面，所述第二表面的延伸面与所述光膜膜片所在平面之间具有二面角。
  12. 根据权利要求11所述的背光模组，其中，所述二面角不大于5°。
  13. 根据权利要求2-9中任一项所述的背光模组，其中，所述第一表面上包括雾面结构。
  14. 根据权利要求2-9中任一项所述的背光模组，其中，所述第一表面上向靠近所述挡墙凸出的位置环绕所述第一表面的周向。
  15. 根据权利要求2-9中任一项所述的背光模组，其中，所述第一表面上向靠近所述挡墙的一侧凸出的位置环绕所述承载部的周向。
  16. 根据权利要求2-9中任一项所述的背光模组，其中，所述背光模组还包括反射片，设置在所述容置部内，且位于所述导光板背离所述光学膜片 的一侧。
  17. 根据权利要求2-9中任一项所述的背光模组，其中，所述底壁上形成有加强筋；所述加强筋的宽度为0.2mm-1.5mm。
  18. 根据权利要求2-9中任一项所述的背光模组，其中，所述第一表面包括台阶面、凹槽面、波浪面中的至少一种。
  19. 一种显示装置，其包括权利要求1-18中任一项所述的背光模组，以及设置在所述承载部上的显示面板。
  20. 根据权利要求19所述的显示装置，其中，所述显示装置包括显示区，所述挡墙到所述显示区边界的距离不大于7mm。
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