WO2020088081A1 - 背光模块及其制作方法、液晶显示装置 - Google Patents

背光模块及其制作方法、液晶显示装置 Download PDF

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Publication number
WO2020088081A1
WO2020088081A1 PCT/CN2019/103713 CN2019103713W WO2020088081A1 WO 2020088081 A1 WO2020088081 A1 WO 2020088081A1 CN 2019103713 W CN2019103713 W CN 2019103713W WO 2020088081 A1 WO2020088081 A1 WO 2020088081A1
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WO
WIPO (PCT)
Prior art keywords
light
guide plate
adhesive
light guide
light source
Prior art date
Application number
PCT/CN2019/103713
Other languages
English (en)
French (fr)
Inventor
张超杰
高亮
雷嗣军
孙艳生
李登仟
Original Assignee
京东方科技集团股份有限公司
重庆京东方光电科技有限公司
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 京东方科技集团股份有限公司, 重庆京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US16/643,536 priority Critical patent/US11347104B2/en
Publication of WO2020088081A1 publication Critical patent/WO2020088081A1/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
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • 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
    • G02B6/0091—Positioning aspects of the light source relative to the light guide
    • 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
    • G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
    • 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
    • G02F1/133605—Direct backlight including specially adapted reflectors
    • 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
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • 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
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses

Definitions

  • the embodiments of the present disclosure relate to the field of display technology, and in particular, to a backlight module, a liquid crystal display device, and a method of manufacturing the backlight module.
  • the liquid crystal display device includes a backlight module.
  • the backlight module is disposed on the light incident side of the liquid crystal panel, and provides backlight to the liquid crystal panel, thereby realizing liquid crystal display.
  • a backlight module including: a support plate including a first surface; a light source fixed on the first surface of the support plate, the light source Having a light exit surface, the light source is configured to emit light from the light exit surface; an adhesive assembly disposed on the first surface of the support plate, the adhesive assembly including at least one adhesive portion, the at least An adhesive portion extends from a light exit surface of the light source toward a direction away from the light source; and a light guide plate including: a bottom surface, the bottom surface of the light guide plate is adhered via the at least one of the adhesive components The joint is adhered to the first surface of the support plate; the top surface opposite to the bottom surface, the top surface serves as the light exit surface of the light guide plate; and the side surfaces surrounding the bottom surface and the top surface, so A part of the side surface serves as a light incident surface of the light guide plate, and light emitted by the light source enters the light guide plate through the light incident surface of the light guide plate.
  • the light incident surface of the light guide plate directly contacts the light exit surface of the light source.
  • the adhesive assembly includes a plurality of adhesive parts arranged in a first direction
  • the light source includes a plurality of light emitting elements arranged in the first direction
  • each adhesive portion is between two adjacent light-emitting elements of the plurality of light-emitting elements.
  • each of the plurality of light emitting elements is configured to emit a light beam
  • an orthographic projection of the light beam on the bottom surface of the light guide plate has a first side and a second side
  • one of the first side and the second side of the orthographic projection of the light beam is at a predetermined angle relative to the other
  • the predetermined angle is the light-emitting angle of the light-emitting element
  • each adhesive portion has an isosceles triangle Shape
  • the base of the isosceles triangle is closer to the light incident surface of the light guide plate than the apex angle of the isosceles triangle
  • the apex angle of the isosceles triangle is equal to the light emitting angle of the light emitting element.
  • each of the plurality of light emitting elements is configured to emit a light beam
  • the plurality of adhesive portions are configured such that each adhesive portion is on the bottom surface of the light guide plate Of the orthographic projections of the light beams of the plurality of light emitting elements are out of the orthographic projection of the bottom surface of the light guide plate.
  • the adhesive assembly further includes a connecting portion connecting the plurality of adhesive portions.
  • the connecting portion includes: a strip-shaped first portion that extends along the first direction; and a plurality of second portions, the plurality of second The portions extend from the strip-shaped first portion toward the plurality of adhesive portions and are connected to the plurality of adhesive portions, respectively, and the connecting portion is adhered to the support plate.
  • the plurality of light emitting elements are located between the first portion of the connection portion and the light incident surface of the light guide plate, and are alternately arranged with the plurality of second portions of the connection portion .
  • the material of the adhesive component includes tape or adhesive.
  • the backlight module further includes: a reflective element, the reflective element is disposed on a side of the light guide plate facing the support plate and is used for the bottom surface of the light guide plate The emitted light is reflected into the light guide plate through the bottom surface.
  • the backlight module further includes: a back plate, wherein the support plate includes a second surface opposite to the first surface, and the second surface is slidable Set on the surface of the back plate.
  • the support board is a circuit board
  • the light source includes a plurality of light emitting elements fixed to the circuit board to be supplied with power.
  • a liquid crystal display device including: the backlight module as described in any one of the above embodiments; and a liquid crystal display panel having a light incident surface, wherein, The light exit surface of the light guide plate of the backlight module faces the light incident surface of the liquid crystal display panel.
  • a method for manufacturing a backlight module including: providing a support plate, the support plate including a first surface; providing a light source and fixing the light source to the support plate On the first surface, the light source has a light exit surface, the light source is configured to emit light from the light exit surface; a light guide plate is provided, the light guide plate includes: a bottom surface; a top surface opposite to the bottom surface, the The top surface serves as the light exit surface of the light guide plate; and the side surfaces surrounding the bottom surface and the top surface, a portion of the side surfaces serve as the light entrance surface of the light guide plate, and the light emitted by the light source passes through the light guide plate
  • the light surface enters the light guide plate; an adhesive component is arranged on the first surface of the support plate, the adhesive component includes at least one adhesive portion, and the at least one adhesive portion emits light from the light source
  • the surface extends in a direction away from the light source, or the adhesive assembly is arranged on the bottom surface of
  • the light incident surface of the light guide plate directly contacts the light exit surface of the light source.
  • the adhesive assembly includes a plurality of adhesive parts arranged in a first direction
  • the light source includes a plurality of light emitting elements arranged in the first direction
  • each adhesive portion is between two adjacent light-emitting elements of the plurality of light-emitting elements.
  • each of the plurality of light emitting elements is configured to emit a light beam
  • an orthographic projection of the light beam on the bottom surface of the light guide plate has a first side and a second side
  • one of the first side and the second side of the orthographic projection of the light beam is at a predetermined angle relative to the other
  • the predetermined angle is the light-emitting angle of the light-emitting element
  • each adhesive portion has an isosceles triangle Shape
  • the base of the isosceles triangle is closer to the light incident surface of the light guide plate than the apex angle of the isosceles triangle
  • the apex angle of the isosceles triangle is equal to the light emitting angle of the light emitting element.
  • each of the plurality of light emitting elements is configured to emit a light beam
  • the plurality of adhesive portions are configured such that each adhesive portion is on the bottom surface of the light guide plate Of the orthographic projections of the light beams of the plurality of light emitting elements are out of the orthographic projection of the bottom surface of the light guide plate.
  • the adhesive assembly further includes a connecting portion connecting the plurality of adhesive portions.
  • the connecting portion includes: a strip-shaped first portion that extends along the first direction; and a plurality of second portions, the plurality of second The portions extend from the strip-shaped first portion toward the plurality of adhesive portions and are connected to the plurality of adhesive portions, respectively, and the connecting portion is adhered to the support plate.
  • the plurality of light emitting elements are located between the first portion of the connection portion and the light incident surface of the light guide plate, and are alternately arranged with the plurality of second portions of the connection portion .
  • the method further includes: providing a reflective element on a side of the light guide plate facing the support plate, the reflective element for emitting light from the bottom surface of the light guide plate Of light is reflected into the light guide plate through the bottom surface.
  • the method further includes: providing a back plate, wherein the support plate includes a second surface opposite to the first surface, and the second surface is slidable The mode is set on the surface of the backplane.
  • providing the support board and providing the light source together include: providing a light source module, the light source module including: a circuit board as the support board; and fixed to the circuit board to A plurality of light emitting elements as the light source to which power is supplied.
  • FIG. 1 is a top view of a backlight module according to an embodiment of the present disclosure
  • FIG. 2 is a cross-sectional view of the backlight module shown in FIG. 1 along line A-A ';
  • FIG. 3 is a top view of a backlight module according to another embodiment of the present disclosure.
  • 4a is a schematic structural diagram of a backlight module, in which the light guide plate is slidably arranged on the first surface of the support plate;
  • FIG. 4b is a schematic structural diagram of the backlight module shown in FIG. 4a after temperature change / aging;
  • FIG. 5 is a top view of a backlight module according to another embodiment of the present disclosure.
  • 6a is a schematic diagram of an adhesive assembly according to an embodiment of the present disclosure.
  • 6b is a schematic diagram of an adhesive assembly according to another embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a backlight module according to yet another embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a liquid crystal display device according to an embodiment of the present disclosure.
  • FIG. 9 is a flowchart of a method of manufacturing a backlight module according to an embodiment of the present disclosure.
  • 10a-10d are schematic structural views of a backlight module formed by various steps of a method for manufacturing a backlight module according to an embodiment of the present disclosure.
  • a backlight module 100 is provided.
  • the backlight module 100 includes: a support plate 101 including the first surface 1011; fixed on the support plate 101
  • the light source 102 on the first surface 1011, the light source 102 has a light exit surface 1021, the light source 102 is configured to emit light from the light exit surface 1021; the first surface 1011 disposed on the support plate 101
  • the adhesive assembly 103 includes at least one adhesive portion 1031, the at least one adhesive portion 1031 extends from the light exit surface 1021 of the light source 102 in a direction away from the light source 102; and the guide The light plate 104, the light guide plate 104 includes a bottom surface 1041, and the bottom surface 1041 of the light guide plate 104 is adhered to the first of the support plate 101 via the at least one adhesive portion 1031 of the adhesive assembly 103 A surface 1011; a top surface 1042 opposite to the
  • the light incident surface 1043 of the light guide plate 104 directly contacts the light exit surface 1021 of the light source 102.
  • FIG. 1 is a top view of a backlight module according to an embodiment of the present disclosure.
  • FIG. 2 is a cross-sectional view of the backlight module shown in FIG. 1 along line A-A '.
  • FIG. 3 is a top view of a backlight module according to another embodiment of the present disclosure.
  • the backlight module 100 includes: a support plate 101 including a first surface 1011; a light source 102 and an adhesive assembly disposed on the first surface 1011 103; the adhesive assembly 103 includes at least one adhesive portion 1031; each adhesive portion 1031 extends from the light exit surface 1021 of the light source 102 in a direction away from the light source 102; a light guide plate 104, the light guide plate 104 It includes a bottom surface 1041, a top surface 1042 opposite to the bottom surface 1041, and a side surface 1040 surrounding the bottom surface and top surface; a part of the side surface 1040 serves as the light incident surface 1043 of the light guide plate, and the top surface 1042 serves as The light exit surface of the light guide plate 104; wherein, the bottom surface 1041 of the light guide plate 104 is adhered to the first surface 1011 of the support plate 101 via the at least one adhesive portion 1031, and the light guide plate 104 The light incident surface 1043 directly contacts the light exit surface 1021 of the light
  • each adhesive portion extends from a light exit surface of the light source toward a direction away from the light source; the bottom surface of the light guide plate is adhered to the support plate via the at least one adhesive portion The first surface of 101, and the light incident surface of the light guide plate directly contacts the light exit surface of the light source.
  • the adhesion area of the light guide plate in contact with the adhesive component can be as close as possible to the light source The light side. Therefore, if the light incident surface of the light guide plate moves, the light incident surface of the light guide plate will drive the light exit surface of the light source to move.
  • the relative position between the light incident surface of the light guide plate and the light source will not change due to the deformation. This increases the brightness of the backlight module as much as possible and reduces the light attenuation caused by aging.
  • the light guide plate 404 only abuts on the light exit surface of the light source 402, and does not adhere to the first surface 4011 of the support plate 401 in the above arrangement (ie, the light guide plate 404 can The sliding manner is arranged on the first surface 4011 of the support plate 101).
  • the relative position between the light guide plate 404 and the light source 402 will change significantly.
  • the support board 101 may be a structure such as a circuit board or a flexible printed circuit (FPC) to provide support and / Or electricity.
  • the light exit surface 1021 of the light source 102 is substantially perpendicular to the first surface 1011 of the support plate 101.
  • the adhesive assembly 103 includes a plurality of adhesive parts 1031; the light source 102 includes a plurality of light emitting elements 1022; each adhesive part 1031 The position of corresponds to the interval between two adjacent light emitting elements 1022.
  • the surface of the adhesive part facing the light guide plate may be an adhesive surface.
  • the surface of the adhesive part facing the supporting plate may also be an adhesive surface; in this case, a double-sided tape may be used to make the adhesive part (or, the adhesive component).
  • the adhesive assembly 103 includes a plurality of adhesive portions 1031 arranged in a first direction
  • the light source 102 includes a plurality of light emitting elements 1022 arranged in the first direction, and when viewed in a second direction perpendicular to the first direction, each adhesive portion 1031 in the plurality of light emitting elements 1022 Between two adjacent light emitting elements 1022.
  • each of the plurality of light emitting elements 1022 is configured to emit a light beam 5
  • the plurality of adhesive portions 1031 are configured to each The orthographic projection of the adhesive portion 1031 on the bottom surface 1041 of the light guide plate 104 is outside the orthographic projection of the light beam 5 of the plurality of light emitting elements 1022 on the bottom surface 1041 of the light guide plate 104.
  • each of the plurality of light emitting elements 1022 is configured to emit a light beam 5, and the light beam 5 is on the light guide plate 104
  • the orthographic projection on the bottom surface 1041 has a first side 51 and a second side 52, and one of the first side 51 and the second side 52 of the orthographic projection of the light beam 5 is at a predetermined angle relative to the other, so The predetermined angle is the light emitting angle ⁇ of the light emitting element 1022, and each adhesive portion 1031 has the shape of an isosceles triangle whose bottom side is closer to the guide than the top angle of the isosceles triangle
  • the light incident surface 1043 of the light plate 104, and the apex angle of the isosceles triangle is equal to the light emitting angle ⁇ of the light emitting element 1022.
  • each adhesive portion 1031 has the shape of an isosceles triangle; the bottom side of the isosceles triangle corresponds to one of two adjacent light-emitting elements 1022 The interval between them; the vertex angle ⁇ of the isosceles triangle is equal to the light emitting angle ⁇ of the light emitting element.
  • the light emitting element may be, for example, a light emitting diode (LED) having a certain light emitting angle.
  • Each adhesive part has the shape of an isosceles triangle; the bottom side of the isosceles triangle corresponds to the interval between two adjacent light-emitting elements; the vertex angle of the isosceles triangle is equal to the light-emitting angle of the light-emitting elements.
  • each adhesive portion 1031 has a rectangular shape; each adhesive portion 1031 corresponds to the interval between two adjacent light emitting elements.
  • the adhesive assembly 103 further includes a connecting portion 1032 that connects the plurality of adhesive portions 1031.
  • the connecting portion 1032 includes: a band-shaped first portion 10321 that extends in the first direction; and a plurality of second portions 10322 that are separated from all The strip-shaped first portions 10321 respectively extend toward the plurality of adhesive portions 1031 and are respectively connected to the plurality of adhesive portions 1031, and the connecting portion 1032 is adhered to the support plate 101.
  • the plurality of light emitting elements 1022 are located between the first portion 10321 of the connection portion 1032 and the light incident surface 1043 of the light guide plate 104 and are connected to the plurality of second portions of the connection portion 1032
  • the sections 10322 are arranged alternately.
  • the adhesive assembly 103 further includes a connecting portion 1032 that connects the plurality of adhesive portions 1031.
  • the adhesive assembly further includes a connecting portion for connecting the plurality of adhesive portions.
  • the connecting portion connects the plurality of adhesive portions so that the plurality of adhesive portions can be arranged according to a predetermined positional relationship.
  • a plurality of adhesive parts are arranged at predetermined intervals and have a predetermined relative positional relationship between the plurality of adhesive parts and the light source.
  • the surface of the connecting portion facing the support plate may be an adhesive surface.
  • the surface of the connecting part facing away from the supporting plate may also be an adhesive surface; in this case, a double-sided tape may be used to make the entire adhesive assembly.
  • the adhesive component as shown in FIG. 6a or FIG. 6b may be integrally aligned with a predetermined area of the support plate so that the predetermined The plurality of adhesive portions 1031 are arranged in a positional relationship.
  • the length L of the at least one adhesive portion 1031 can be adjusted according to the actual size of the backlight module.
  • the adhesive portion 1031 may be a strip or a double-sided strip having a thickness of 0.03 mm to 0.05 mm.
  • the material of the adhesive component includes tape or adhesive.
  • Processes such as coating or printing may be used to apply an adhesive component including tape or adhesive to the first surface of the support plate 101.
  • the backlight module 100 further includes: a reflective element 105 disposed on a side of the light guide plate 104 facing the support plate 101 It is also used to reflect light emitted from the bottom surface 1041 of the light guide plate 104 to the light guide plate 104 through the bottom surface 1041.
  • the backlight module 100 further includes: a back plate 106, the support plate 101 includes a second surface 1012 opposite to the first surface 1011, And the second surface 1012 is slidably provided on the surface of the back plate 106.
  • the support board 101 is a circuit board
  • the light source 102 includes a plurality of fixed to the circuit board With the light emitting element 1022 supplied with power.
  • the support board 101 is a flexible printed circuit board
  • the light source 102 includes a plurality of light emitting elements 1022 fixed to the flexible printed circuit board
  • the flexible printed circuit board and the plurality of light emitting elements 1022 constitute a light bar.
  • the light emitting element 1022 may be a light emitting diode.
  • the backlight module 700 further includes a reflective element 105; the reflective element 105 is disposed on a side of the light guide plate 104 near the bottom surface 1041.
  • the reflective element may be a reflective sheet, and the reflective surface of the reflective sheet faces the bottom surface of the light guide plate.
  • the reflective element may also be a reflective pattern arranged on the bottom surface of the light guide plate, so as to reflect light inside the light guide plate toward the light exit surface of the light guide plate.
  • the backlight module 700 further includes a back plate 106; the support plate 101 includes a second surface 1012 opposite to the first surface 1011; the first The two surfaces 1012 are slidably disposed on the surface of the back plate 106.
  • the light guide plate 104 may be fixed on the back plate 106. Since the second surface 1012 of the support plate 101 is slidably disposed on the surface of the back plate 106, the support plate 101 can be at the level of FIG. 7 with the light incident surface 1043 of the light guide plate 104 Pan in the direction. Therefore, even if the light guide plate 104 is deformed due to aging, the relative position between the light guide plate 104 and the light source 102 does not change.
  • the back plate 106 may further include a bent portion 1061 for blocking the light source 102, thereby preventing light leakage of the backlight module at the position where the light source is located.
  • a light-shielding tape 107 may be provided on the surface of the bent portion 1061 facing the light source 102, thereby further preventing light leakage of the backlight module at the position where the light source is located.
  • the liquid crystal display device 800 includes: the backlight module 801 described in any one of the above embodiments; and A liquid crystal display panel 802 having a light incident surface 8021. 2 and 7, the light exit surface of the light guide plate 104 of the backlight module 801 faces the light incident surface 8021 of the liquid crystal display panel 802.
  • the liquid crystal display device 800 includes the backlight module 801 and the liquid crystal display panel 802 according to any one of the above embodiments; wherein, the light exit surface 8011 of the backlight module 801 faces the liquid crystal display panel 802 ⁇ ⁇ ⁇ 8021.
  • the liquid crystal display device may be any product or component with a display function such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
  • a display function such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
  • the manufacturing method of the backlight module 100 includes: providing a support plate 101 including the first surface 1011; and providing a light source 102 And fix the light source 102 on the first surface 1011 of the support plate 101, the light source 102 has a light exit surface 1021, the light source 102 is configured to emit light from the light exit surface 1021; a light guide plate 104 is provided
  • the light guide plate 104 includes a bottom surface 1041; a top surface 1042 opposite to the bottom surface 1041, the top surface 1042 serves as a light exit surface of the light guide plate 104; and a side surface 1040 surrounding the bottom surface 1041 and the top surface 1042 A part of the side surface 1040 serves as the light incident surface 1043 of the light guide plate 104, and the light emitted by the light source 102 enters the light guide plate 104 through the light incident
  • the light incident surface 1043 of the light guide plate 104 directly contacts the light exit surface 1021 of the light source 102.
  • a method for manufacturing a backlight module includes the following steps.
  • a support plate 101 is provided.
  • the support plate 101 includes a first surface 1011; a light source 102 is provided on the first surface 1011 (as shown in FIG. 10a).
  • a light guide plate 104 is provided.
  • the light guide plate 104 includes a bottom surface 1041, a top surface 1042 opposite to the bottom surface 1041, and a side surface 1040 surrounding the bottom surface 1041 and the top surface 1042; a part of the side surface 1040 As the light incident surface 1043 of the light guide plate, the top surface 1042 serves as the light exit surface of the light guide plate (as shown in FIG. 10b).
  • an adhesive assembly 103 is arranged on the first surface 1011 of the support plate 101; the adhesive assembly 103 includes at least one adhesive portion 1031; each adhesive portion 1031 is from the light source 102 The light exit surface 1021 extends away from the light source 102 (as shown in FIG. 10c).
  • step S04 the bottom surface 1041 of the light guide plate 104 is adhered to the first surface 1011 of the support plate 101 via the at least one adhesive portion 1031; the light incident surface 1043 of the light guide plate directly contacts The light emitting surface 1021 of the light source 102 (as shown in FIG. 2).
  • a backlight module as shown in FIG. 2 is obtained.
  • each adhesive portion extends from a light exit surface of the light source toward a direction away from the light source; the bottom surface of the light guide plate is adhered to the support plate via the at least one adhesive portion The first surface of 101, and the light incident surface of the light guide plate directly contacts the light exit surface of the light source.
  • the relative position between the light incident surface of the light guide plate and the light source will not change due to the deformation. This increases the brightness of the backlight module as much as possible and reduces the light attenuation caused by aging.
  • the adhesive component may also be provided on the light guide plate, and then the light guide plate and the support plate are bonded together using the above adhesive component. Specifically, the following step S03 'can be used to replace step S03 in the above embodiment.
  • an adhesive assembly 103 is arranged on the bottom surface 1041 of the light guide plate 104; the adhesive assembly 103 includes at least one adhesive portion 1031; each adhesive portion 1031 enters from the light guide plate 104 The light surface 1043 extends away from the light incident surface 1043 (as shown in FIG. 10d).
  • the adhesive assembly 103 includes a plurality of adhesive portions 1031 arranged in a first direction
  • the light source 102 includes a plurality of light emitting elements 1022 arranged in the first direction, and when viewed in a second direction perpendicular to the first direction, each adhesive portion 1031 in the plurality of light emitting elements 1022 Between two adjacent light emitting elements 1022.
  • each of the plurality of light emitting elements 1022 is configured to emit a light beam 5
  • the plurality of adhesive portions 1031 are configured to each The orthographic projection of the adhesive portion 1031 on the bottom surface 1041 of the light guide plate 104 is outside the orthographic projection of the light beam 5 of the plurality of light emitting elements 1022 on the bottom surface 1041 of the light guide plate 104.
  • each of the plurality of light emitting elements 1022 is configured to emit a light beam 5, and the light beam 5 is on the light guide plate 104
  • the orthographic projection on the bottom surface 1041 has a first side 51 and a second side 52, and one of the first side 51 and the second side 52 of the orthographic projection of the light beam 5 is at a predetermined angle relative to the other, so The predetermined angle is the light emitting angle ⁇ of the light emitting element 1022, and each adhesive portion 1031 has the shape of an isosceles triangle whose bottom side is closer to the guide than the top angle of the isosceles triangle
  • the light incident surface 1043 of the light plate 104, and the apex angle of the isosceles triangle is equal to the light emitting angle ⁇ of the light emitting element 1022.
  • the adhesive assembly 103 includes a plurality of adhesive parts 1031; the light source 102 includes a plurality of light emitting elements 1022; each adhesive part 1031 The position of corresponds to the interval between two adjacent light emitting elements 1022.
  • the surface of the adhesive part facing the light guide plate may be an adhesive surface.
  • the surface of the adhesive part facing the supporting plate may also be an adhesive surface; in this case, a double-sided tape may be used to make the adhesive part (or, the adhesive component).
  • each adhesive portion 1031 has the shape of an isosceles triangle; the bottom side of the isosceles triangle corresponds to one of two adjacent light-emitting elements 1022 The interval between them; the vertex angle ⁇ of the isosceles triangle is equal to the light emitting angle ⁇ of the light emitting element.
  • the light emitting element may be, for example, a light emitting diode (LED) having a certain light emitting angle.
  • Each adhesive part has the shape of an isosceles triangle; the bottom side of the isosceles triangle corresponds to the interval between two adjacent light-emitting elements; the vertex angle of the isosceles triangle is equal to the light-emitting angle of the light-emitting elements.
  • the adhesive assembly 103 further includes a connecting portion 1032 that connects the plurality of adhesive portions 1031.
  • the connecting portion 1032 includes: a band-shaped first portion 10321 that extends in the first direction; and a plurality of second portions 10322 that are separated from all The strip-shaped first portions 10321 respectively extend toward the plurality of adhesive portions 1031 and are respectively connected to the plurality of adhesive portions 1031, and the connecting portion 1032 is adhered to the support plate 101.
  • the plurality of light emitting elements 1022 are located between the first portion 10321 of the connection portion 1032 and the light incident surface 1043 of the light guide plate 104 and are connected to the plurality of second portions of the connection portion 1032
  • the sections 10322 are arranged alternately.
  • the adhesive assembly 103 further includes a connecting portion 1032 that connects the plurality of adhesive portions 1031.
  • the adhesive assembly further includes a connecting portion for connecting the plurality of adhesive portions.
  • the connecting portion connects the plurality of adhesive portions so that the plurality of adhesive portions can be arranged according to a predetermined positional relationship.
  • a plurality of adhesive parts are arranged at predetermined intervals and have a predetermined relative positional relationship between the plurality of adhesive parts and the light source.
  • the surface of the connecting portion facing the support plate may be an adhesive surface.
  • the surface of the connecting part facing away from the supporting plate may also be an adhesive surface; in this case, a double-sided tape may be used to make the entire adhesive assembly.
  • the adhesive component as shown in FIG. 6a or 6b may be integrally aligned with a predetermined area of the support plate, so The plurality of adhesive portions 1031 are arranged in a positional relationship.
  • the method further includes: providing a reflective element 105 on the side of the light guide plate 104 facing the support plate 101, the reflective element 105 is used to The light emitted from the bottom surface 1041 of the light guide plate 104 is reflected into the light guide plate 104 through the bottom surface 1041.
  • the method further includes: providing a back plate 106, the support plate 101 includes a second surface 1012 opposite to the first surface 1011, and the second The surface 1012 is slidably disposed on the surface of the back plate 106.
  • providing the support plate 101 and providing the light source 102 include: providing a light source module, and the light source module includes: A circuit board as the support plate 101; and a plurality of light emitting elements 1022 as the light source 102 fixed to the circuit board to be supplied with power.
  • providing the support board 101 and providing the light source 102 together include: providing a light bar, the light bar including: a flexible printed circuit board as the support board 101; and a work fixed to the flexible printed circuit board A plurality of light emitting elements 1022 of the light source 102.
  • the method further includes: providing a reflective element 105 on the side of the light guide plate 104 near the bottom surface 1042 (as shown in FIG. 7).
  • the reflective element may be a reflective sheet, and the reflective surface of the reflective sheet faces the bottom surface of the light guide plate.
  • the reflective element may also be a reflective pattern arranged on the bottom surface of the light guide plate, so as to reflect light inside the light guide plate toward the light exit surface of the light guide plate.
  • the method further includes: providing a backplane 106.
  • the supporting plate 101 includes a second surface 1012 opposite to the first surface 1011; the second surface 1012 is slidably disposed on the surface of the back plate 106 (as shown in FIG. 7).
  • each adhesive part extends from the light exit surface of the light source toward a direction away from the light source; the bottom surface of the light guide plate passes The at least one adhesive part is adhered to the first surface of the support plate 101, and the light incident surface of the light guide plate directly contacts the light exit surface of the light source.
  • the adhesion area of the light guide plate and the adhesive assembly can be as close as possible to the light exit surface of the light source. Therefore, if the light incident surface of the light guide plate moves, the light incident surface of the light guide plate will drive the light exit surface of the light source to move.
  • the relative position between the light incident surface of the light guide plate and the light source will not change due to the deformation. This increases the brightness of the backlight module as much as possible and reduces the light attenuation caused by aging.

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Abstract

一种背光模块（100，700，801）、液晶显示装置（800）、以及背光模块（100，700，801）的制作方法，背光模块（100，700，801）包括：支撑板（101，401），支撑板（101，401）包括第一表面（1011，4011）；固定在支撑板（101，401）的第一表面（1011，4011）上的光源（102，402），光源（102，402）具有出光面（1021，8011），光源（102，402）构造成从出光面（1021，8011）发出光；布置在支撑板（101，401）的第一表面（1011，4011）上的粘合组件（103），粘合组件（103）包括至少一个粘合部（1031），至少一个粘合部（1031）从光源（102，402）的出光面（1021，8011）朝向远离光源（102，402）的方向延伸；以及导光板（104，404），导光板（104，404）包括：底面（1041），导光板（104，404）的底面（1041）经由粘合组件（103）的至少一个粘合部（1031）粘附至支撑板（101，401）的第一表面（1011，4011）；与底面（1041）相对的顶面（1042），顶面（1042）作为导光板（104，404）的出光面（1021）；以及环绕底面（1041）和顶面（1042）的侧面（1040），侧面（1040）的一部分作为导光板（104，404）的入光面（1043）。

Description

背光模块及其制作方法、液晶显示装置
相关申请的交叉引用
本申请要求于2018年11月1日递交中国专利局的、申请号为201811295414.6的中国专利申请的权益，该申请的全部公开内容以引用方式并入本文。
技术领域
本公开的实施例涉及显示技术领域，尤其涉及一种背光模块、液晶显示装置、以及背光模块的制作方法。
背景技术
液晶显示装置包括背光模块。在液晶显示装置中，背光模块设置在液晶面板的入光侧，并向液晶面板提供背光，从而实现液晶显示。
发明内容
根据本公开的实施例的一个方面，提供了一种背光模块，包括：支撑板，所述支撑板包括第一表面；固定在所述支撑板的所述第一表面上的光源，所述光源具有出光面，所述光源构造成从所述出光面发出光；布置在所述支撑板的所述第一表面上的粘合组件，所述粘合组件包括至少一个粘合部，所述至少一个粘合部从所述光源的出光面朝向远离所述光源的方向延伸；以及导光板，所述导光板包括：底面，所述导光板的底面经由所述粘合组件的所述至少一个粘合部粘附至所述支撑板的所述第一表面；与所述底面相对的顶面，所述顶面作为所述导光板的出光面；以及环绕所述底面和顶面的侧面，所述侧面的一部分作为所述导光板的入光面，所述光源发出的光通过所述导光板的入光面进入所述导光板。
可选地，在一些实施例中，所述导光板的入光面直接接触所述光源的出光面。
可选地，在一些实施例中，所述粘合组件包括多个在第一方向上排列的粘合部，所述光源包括多个在所述第一方向上排列的发光元件，并且在与所述第 一方向垂直的第二方向上观看时，每个粘合部在所述多个发光元件中的相邻两个发光元件之间。
可选地，在一些实施例中，所述多个发光元件中的每一个构造成发出光束，所述光束在所述导光板的所述底面上的正投影具有第一边和第二边，并且所述光束的正投影的第一边和第二边中的一个相对于另一个成预定角度，所述预定角度为所述发光元件的发光角，并且每个粘合部具有等腰三角形的形状，所述等腰三角形的底边比所述等腰三角形的顶角更靠近所述导光板的入光面，并且所述等腰三角形的顶角等于所述发光元件的发光角。
可选地，在一些实施例中，所述多个发光元件中的每一个构造成发出光束，并且所述多个粘合部构造成每个粘合部在所述导光板的所述底面上的正投影在所述多个发光元件的所述光束在所述导光板的所述底面上的正投影之外。
可选地，在一些实施例中，所述粘合组件进一步包括连接所述多个粘合部的连接部。
可选地，在一些实施例中，所述连接部包括：带状的第一部分，所述带状的第一部分沿所述第一方向延伸；以及多个第二部分，所述多个第二部分从所述带状的第一部分分别朝向所述多个粘合部延伸并分别与所述多个粘合部连接，所述连接部粘接于所述支撑板。
可选地，在一些实施例中，所述多个发光元件位于所述连接部的第一部分与所述导光板的入光面之间，并且与所述连接部的多个第二部分交替排列。
可选地，在一些实施例中，所述粘合组件的材料包括胶带或粘合剂。
可选地，在一些实施例中，所述的背光模块还包括：反射元件，所述反射元件设置在所述导光板的朝向所述支撑板的一侧并用于将从所述导光板的底面出射的光通过所述底面反射到所述导光板中。
可选地，在一些实施例中，所述的背光模块还包括：背板，其中所述支撑板包括与所述第一表面相对的第二表面，并且所述第二表面以可滑动的方式设置在所述背板的表面上。
可选地，在一些实施例中，所述支撑板是电路板，并且所述光源包括多个固定于电路板以被供给电力的发光元件。
根据本公开的实施例的另一方面，提供了一种液晶显示装置，包括：如以上任一实施例所述的背光模块；和液晶显示面板，所述液晶显示面板具有入光 面，其中，所述背光模块的所述导光板的出光面面对所述液晶显示面板的入光面。
根据本公开的实施例的又一方面，提供了一种背光模块的制作方法，包括：提供支撑板，所述支撑板包括第一表面；提供光源并将所述光源固定于所述支撑板的所述第一表面上，所述光源具有出光面，所述光源构造成从所述出光面发出光；提供导光板，所述导光板包括：底面；与所述底面相对的顶面，所述顶面作为所述导光板的出光面；以及环绕所述底面和顶面的侧面，所述侧面的一部分作为所述导光板的入光面，所述光源发出的光通过所述导光板的入光面进入所述导光板；在所述支撑板的所述第一表面上布置粘合组件，所述粘合组件包括至少一个粘合部，所述至少一个粘合部从所述光源的出光面朝向远离所述光源的方向延伸，或者在所述导光板的所述底面上布置所述粘合组件，所述粘合组件的所述至少一个粘合部从所述导光板的所述入光面朝向远离所述入光面的方向延伸；以及将所述导光板的所述底面经由所述粘合组件的所述至少一个粘合部粘附至所述支撑板的所述第一表面。
可选地，在一些实施例中，所述导光板的入光面直接接触所述光源的出光面。
可选地，在一些实施例中，所述粘合组件包括多个在第一方向上排列的粘合部，所述光源包括多个在所述第一方向上排列的发光元件，并且在与所述第一方向垂直的第二方向上观看时，每个粘合部在所述多个发光元件中的相邻两个发光元件之间。
可选地，在一些实施例中，所述多个发光元件中的每一个构造成发出光束，所述光束在所述导光板的所述底面上的正投影具有第一边和第二边，并且所述光束的正投影的第一边和第二边中的一个相对于另一个成预定角度，所述预定角度为所述发光元件的发光角，并且每个粘合部具有等腰三角形的形状，所述等腰三角形的底边比所述等腰三角形的顶角更靠近所述导光板的入光面，并且所述等腰三角形的顶角等于所述发光元件的发光角。
可选地，在一些实施例中，所述多个发光元件中的每一个构造成发出光束，并且所述多个粘合部构造成每个粘合部在所述导光板的所述底面上的正投影在所述多个发光元件的所述光束在所述导光板的所述底面上的正投影之外。
可选地，在一些实施例中，所述粘合组件进一步包括连接所述多个粘合部 的连接部。
可选地，在一些实施例中，所述连接部包括：带状的第一部分，所述带状的第一部分沿所述第一方向延伸；以及多个第二部分，所述多个第二部分从所述带状的第一部分分别朝向所述多个粘合部延伸并分别与所述多个粘合部连接，所述连接部粘接于所述支撑板。
可选地，在一些实施例中，所述多个发光元件位于所述连接部的第一部分与所述导光板的入光面之间，并且与所述连接部的多个第二部分交替排列。
可选地，在一些实施例中，所述的方法还包括：在所述导光板的朝向所述支撑板的一侧设置反射元件，所述反射元件用于将从所述导光板的底面出射的光通过所述底面反射到所述导光板中。
可选地，在一些实施例中，所述的方法还包括：提供背板，其中，所述支撑板包括与所述第一表面相对的第二表面，并且所述第二表面以可滑动的方式设置在所述背板的表面上。
可选地，在一些实施例中，提供所述支撑板和提供所述光源共同包括：提供光源模块，所述光源模块包括：作为所述支撑板的电路板；以及固定于所述电路板以被供给电力的作为所述光源的多个发光元件。
附图说明
为了更清楚地说明本公开实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为根据本公开实施例的背光模块的俯视图；
图2为如图1所示的背光模块沿A-A′线的剖视图；
图3为根据本公开另一实施例的背光模块的俯视图；
图4a为背光模块的结构示意图，其中导光板以可滑动的方式布置在支撑板的第一表面上；
图4b为图4a所示的背光模块在温度变化/老化之后的结构示意图；
图5为根据本公开另一实施例的背光模块的俯视图；
图6a为根据本公开实施例的粘合组件的示意图；
图6b为根据本公开另一实施例的粘合组件的示意图；
图7为根据本公开又一实施例的背光模块的结构示意图；
图8为根据本公开实施例的液晶显示装置的结构示意图；
图9为根据本公开实施例的背光模块的制作方法的流程图；以及
图10a-图10d为根据本公开实施例的背光模块的制作方法的各步骤形成的背光模块的结构示意图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，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他实施例，都属于本公开保护的范围。
根据本公开的实施例的一个方面，提供了背光模块100。参见图1、图2、图3、图5至图7，根据本公开的实施例的背光模块100包括：支撑板101，所述支撑板101包括第一表面1011；固定在所述支撑板101的所述第一表面1011上的光源102，所述光源102具有出光面1021，所述光源102构造成从所述出光面1021发出光；布置在所述支撑板101的所述第一表面1011上的粘合组件103，所述粘合组件103包括至少一个粘合部1031，所述至少一个粘合部1031从所述光源102的出光面1021朝向远离所述光源102的方向延伸；以及导光板104，所述导光板104包括：底面1041，所述导光板104的底面1041经由所述粘合组件103的所述至少一个粘合部1031粘附至所述支撑板101的所述第一表面1011；与所述底面1041相对的顶面1042，所述顶面1042作为所述导光板104的出光面；以及环绕所述底面1041和顶面1042的侧面1040，所述侧面1040的一部分作为所述导光板104的入光面1043，所述光源102发出的光通过所述导光板104的入光面1043进入所述导光板104。例如，所述粘合组件103的材料包括胶带或粘合剂。
在本公开的一些实施例中，参见图1、图2、图3、图5、图7，所述导光板104的入光面1043直接接触所述光源102的出光面1021。
根据本公开的一个示例，提供了一种背光模块。图1为根据本公开实施例的背光模块的俯视图。图2为如图1所示的背光模块沿A-A′线的剖视图。图3 为根据本公开另一实施例的背光模块的俯视图。
如图1、图2和图3所示，所述背光模块100包括：支撑板101，所述支撑板101包括第一表面1011；布置在所述第一表面1011上的光源102和粘合组件103；所述粘合组件103包括至少一个粘合部1031；每个粘合部1031从所述光源102的出光面1021朝向远离所述光源102的方向延伸；导光板104，所述导光板104包括底面1041、与所述底面1041相对的顶面1042、以及环绕所述底面和顶面的侧面1040；所述侧面1040的一部分作为所述导光板的入光面1043，所述顶面1042作为所述导光板104的出光面；其中，所述导光板104的底面1041经由所述至少一个粘合部1031粘附至所述支撑板101的所述第一表面1011，并且所述导光板104的入光面1043直接接触所述光源102的出光面1021。
在本公开的实施例中，每个粘合部从所述光源的出光面朝向远离所述光源的方向延伸；所述导光板的底面经由所述至少一个粘合部粘附至所述支撑板101的所述第一表面，并且所述导光板的入光面直接接触所述光源的出光面。利用以上的布置形式，所述导光板与所述粘合组件接触的粘附区域(如图1-3、图5和图7中的附图标记1044所示)能够尽可能地靠近所述光源的出光面。由此，如果所述导光板的入光面发生了移动，那么所述导光板的入光面会带动所述光源的出光面移动。因此，当所述导光板由于温度变化或老化而发生形变时，所述导光板的入光面与所述光源之间的相对位置不会因为所述形变而发生变化。由此尽可能地增加了背光模块的亮度并减少了老化导致的光衰减。
例如，如图4a所示，导光板404仅仅抵靠在所述光源402的出光面上，而没有按以上的布置形式粘附至支撑板401的第一表面4011(即，导光板404以可滑动的方式布置在所述支撑板101的所述第一表面4011上)。在此情况下，如图4b所示，当导光板404由于老化而发生形变时，导光板404和光源402之间的相对位置将发生明显的变化。
在一些实施例中，参见图1、图2、图3、图5、图7，所述支撑板101可以是诸如电路板或柔性印刷电路(FPC)的结构，从而向所述光源提供支撑和/或电力。所述光源102的出光面1021基本上垂直于所述支撑板101的所述第一表面1011。
可选地，如图1和图5所示，在一些实施例中，所述粘合组件103包括多 个粘合部1031；所述光源102包括多个发光元件1022；每个粘合部1031的位置对应于相邻两个发光元件1022之间的间隔。
可选地，在一些实施例中，所述粘合部朝向所述导光板的表面可以是粘性表面。当然，所述粘合部朝向所述支撑板的表面也可以是粘性表面；在这种情况下，可以使用双面胶带来制作所述粘合部(或，所述粘合组件)。利用上述布置，所述导光板和所述支撑板101的所述第一表面之间的结合更加稳固。每个粘合部的位置对应于相邻两个发光元件之间的间隔，因此发光元件发出的光束基本上不会照射在所述粘合部上，减少了光的损失。当然，如附图3所示，也可以使用单独的粘合部1031将所述导光板104结合至所述支撑板101的第一表面1011。
可选地，在本公开的一些实施例中，参见图1、图3、图5至图7，所述粘合组件103包括多个在第一方向上排列的粘合部1031，所述光源102包括多个在所述第一方向上排列的发光元件1022，并且在与所述第一方向垂直的第二方向上观看时，每个粘合部1031在所述多个发光元件1022中的相邻两个发光元件1022之间。
可选地，在本公开的一些实施例中，参见图1、图5，所述多个发光元件1022中的每一个构造成发出光束5，并且所述多个粘合部1031构造成每个粘合部1031在所述导光板104的所述底面1041上的正投影在所述多个发光元件1022的所述光束5在所述导光板104的所述底面1041上的正投影之外。
可选地，在本公开的一些实施例中，参见图1、图5、图6a，所述多个发光元件1022中的每一个构造成发出光束5，所述光束5在所述导光板104的所述底面1041上的正投影具有第一边51和第二边52，并且所述光束5的正投影的第一边51和第二边52中的一个相对于另一个成预定角度，所述预定角度为所述发光元件1022的发光角θ，并且每个粘合部1031具有等腰三角形的形状，所述等腰三角形的底边比所述等腰三角形的顶角更靠近所述导光板104的入光面1043，并且所述等腰三角形的顶角等于所述发光元件1022的发光角θ。
可选地，如图1和图5所示，在一些实施例中，每个粘合部1031具有等腰三角形的形状；所述等腰三角形的底边对应于相邻两个发光元件1022之间的间隔；所述等腰三角形的顶角α等于所述发光元件的发光角θ。
在一些实施例中，所述发光元件可以例如是具有一定发光角的发光二极管 (LED)。每个粘合部具有等腰三角形的形状；所述等腰三角形的底边对应于相邻两个发光元件之间的间隔；所述等腰三角形的顶角等于所述发光元件的发光角。利用上述布置，进一步避免了发光元件发出的光束照射在所述粘合部上，从而减少光的损失。
在一些实施例中，当发光元件的尺寸较小时，为了确保足够的粘合强度，也可以使用具有矩形形状的粘合部。例如，在一些实施例中，如图6b所示，每个粘合部1031具有矩形的形状；每个粘合部1031对应于相邻两个发光元件之间的间隔。
可选地，在本公开的一些实施例中，参见图5至图7，所述粘合组件103进一步包括连接所述多个粘合部1031的连接部1032。例如，所述连接部1032包括：带状的第一部分10321，所述带状的第一部分10321沿所述第一方向延伸；以及多个第二部分10322，所述多个第二部分10322从所述带状的第一部分10321分别朝向所述多个粘合部1031延伸并分别与所述多个粘合部1031连接，所述连接部1032粘接于所述支撑板101。根据本公开的一些示例，所述多个发光元件1022位于所述连接部1032的第一部分10321与所述导光板104的入光面1043之间，并且与所述连接部1032的多个第二部分10322交替排列。
可选地，如图5、图6a和图6b所示，在一些实施例中，所述粘合组件103进一步包括连接所述多个粘合部1031的连接部1032。
在一些实施例中，所述粘合组件进一步包括用于连接所述多个粘合部的连接部。所述连接部连接所述多个粘合部，使得多个粘合部能够按照预定的位置关系来布置。例如多个粘合部按照预定的间隔布置并且在多个粘合部与光源之间具有预定的相对位置关系。由此，不仅提高了多个粘合部的位置精度，也简化了施加粘合组件的工艺。所述连接部朝向所述支撑板的表面可以是粘性表面。当然，所述连接部背离所述支撑板的表面也可以是粘性表面；在这种情况下，可以使用双面胶带来制作整个粘合组件。例如，在向所述支撑板的第一表面施加粘合组件的工艺中，可以将如图6a或图6b所示的粘合组件整体地与所述支撑板的预定区域对齐，从而按照预定的位置关系来布置所述多个粘合部1031。
在一些实施例中，在垂直于所述光源102的出光面1021的方向上，所述至少一个粘合部1031的长度L可以根据背光模块的实际尺寸进行调整。具体 地，在一些实例中，所述粘合部1031可以是厚度为0.03mm～0.05mm的胶条或双面胶条。
利用上述布置，能够保持适当的结合强度，并且尽可能地减少光的损失。
可选地，在一些实施例中，所述粘合组件的材料包括胶带或粘合剂。
可以使用涂布或印刷等工艺，将包括胶带或粘合剂的粘合组件施加到所述支撑板101的所述第一表面。
可选地，在本公开的一些实施例中，参见图7，所述背光模块100还包括：反射元件105，所述反射元件105设置在所述导光板104的朝向所述支撑板101的一侧并用于将从所述导光板104的底面1041出射的光通过所述底面1041反射到所述导光板104中。
可选地，参见图7，在本公开的一些实施例中，所述的背光模块100还包括：背板106，所述支撑板101包括与所述第一表面1011相对的第二表面1012，并且所述第二表面1012以可滑动的方式设置在所述背板106的表面上。
可选地，参见图1、图2、图3、图5、图7，在本公开的一些实施例中，所述支撑板101是电路板，并且所述光源102包括多个固定于电路板以被供给电力的发光元件1022。例如，所述支撑板101是柔性印刷电路板，所述光源102包括多个固定于柔性印刷电路板的发光元件1022，并且所述柔性印刷电路板和多个发光元件1022构成灯条。发光元件1022可以是发光二极管。
可选地，如图7所示，在一些实施例中，所述背光模块700还包括反射元件105；所述反射元件105设置在所述导光板104靠近所述底面1041的一侧。
利用所述反射元件，能够进一步提高光源的光利用率，减少光的损失。所述反射元件可以是反射片，所述反射片的反射面朝向所述导光板的底面。所述反射元件还可以是布置在所述导光板的底面上的反射图案，从而将所述导光板内部的光线朝向所述导光板的出光面反射。
可选地，如图7所示，在一些实施例中，所述背光模块700还包括背板106；所述支撑板101包括与所述第一表面1011相对的第二表面1012；所述第二表面1012以可滑动的方式设置在所述背板106的表面上。
例如，可以将所述导光板104固定在所述背板106上。由于所述支撑板101的第二表面1012以可滑动的方式设置在所述背板106的表面上，所述支撑板101可以随着所述导光板104的入光面1043在图7的水平方向上平移。因 此，即使导光板104由于老化而产生了形变，导光板104和光源102之间的相对位置也不会发生变化。
此外，如图7所示，所述背板106还可以包括用于遮挡光源102的弯折部1061，从而防止背光模块在光源所在的位置处的漏光。可选地，在所述弯折部1061面对所述光源102的表面上可以设置遮光胶带107，从而进一步防止背光模块在光源所在的位置处的漏光。
根据本公开的实施例的另一方面，提供了一种液晶显示装置800，如图8所示，液晶显示装置800包括：上述实施例中的任意一个实施例中所述的背光模块801；和液晶显示面板802，所述液晶显示面板802具有入光面8021。参见图2、图7，所述背光模块801的所述导光板104的出光面面对所述液晶显示面板802的入光面8021。
根据本公开的一些示例，提供了一种液晶显示装置。如图8所示，所述液晶显示装置800包括如以上任一实施例所述的背光模块801和液晶显示面板802；其中，所述背光模块801的出光面8011面对所述液晶显示面板802的入光面8021。该液晶显示装置可以为：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。该液晶显示装置的实施可以参见上述背光模块的实施例，重复之处不再赘述。
根据本公开的实施例的又一方面，提供了一种背光模块的制作方法。参见图1、图2、图3、图5至图7，根据本公开的实施例的背光模块100的制作方法包括：提供支撑板101，所述支撑板101包括第一表面1011；提供光源102并将所述光源102固定于所述支撑板101的所述第一表面1011上，所述光源102具有出光面1021，所述光源102构造成从所述出光面1021发出光；提供导光板104，所述导光板104包括：底面1041；与所述底面1041相对的顶面1042，所述顶面1042作为所述导光板104的出光面；以及环绕所述底面1041和顶面1042的侧面1040，所述侧面1040的一部分作为所述导光板104的入光面1043，所述光源102发出的光通过所述导光板104的入光面1043进入所述导光板104；在所述支撑板101的所述第一表面1011上布置粘合组件103，所述粘合组件103包括至少一个粘合部1031，所述至少一个粘合部1031从所述光源102的出光面1021朝向远离所述光源102的方向延伸，或者在所述导光板104的所述底面1041上布置所述粘合组件103，所述粘合组件103的所述至少 一个粘合部1031从所述导光板104的所述入光面1043朝向远离所述入光面1043的方向延伸；以及将所述导光板104的所述底面1041经由所述粘合组件103的所述至少一个粘合部1031粘附至所述支撑板101的所述第一表面1011。
在本公开的一些实施例中，参见图1、图2、图3、图5、图7，所述导光板104的入光面1043直接接触所述光源102的出光面1021。
根据本公开的一些示例，提供了一种背光模块的制作方法。如图9所示，所述背光模块的制作方法包括以下步骤。
在步骤S01中，提供支撑板101，所述支撑板101包括第一表面1011；所述第一表面1011上设置有光源102(如图10a所示)。
在步骤S02中，提供导光板104，所述导光板104包括底面1041、与所述底面1041相对的顶面1042、以及环绕所述底面1041和顶面1042的侧面1040；所述侧面1040的一部分作为所述导光板的入光面1043，所述顶面1042作为所述导光板的出光面(如图10b所示)。
在步骤S03中，在所述支撑板101的所述第一表面1011上布置粘合组件103；所述粘合组件103包括至少一个粘合部1031；每个粘合部1031从所述光源102的出光面1021朝向远离所述光源102的方向延伸(如图10c所示)。
在步骤S04中，将所述导光板104的底面1041经由所述至少一个粘合部1031粘附至所述支撑板101的所述第一表面1011；所述导光板的入光面1043直接接触所述光源102的出光面1021(如图2所示)。由此，获得如图2所示的背光模块。
在本公开的实施例中，每个粘合部从所述光源的出光面朝向远离所述光源的方向延伸；所述导光板的底面经由所述至少一个粘合部粘附至所述支撑板101的所述第一表面，并且所述导光板的入光面直接接触所述光源的出光面。利用以上的布置形式，所述导光板与所述粘合组件接触的粘附区域能够尽可能地靠近所述光源的出光面。由此，如果所述导光板的入光面发生了移动，那么所述导光板的入光面会带动所述光源的出光面移动。因此，当所述导光板由于温度变化或老化而发生形变时，所述导光板的入光面与所述光源之间的相对位置不会因为所述形变而发生变化。由此尽可能地增加了背光模块的亮度并减少了老化导致的光衰减。
考虑到诸如图6a和图6b所示的粘合组件的样式，将所述粘合组件设置在 所述支撑板上，能够获得更高的生产效率和精度。在本公开的一些实施例中，所述粘合组件也可以设置在所述导光板上，然后利用上述粘合组件将所述导光板与所述支撑板粘合在一起。具体地，可以使用以下步骤S03′来替换以上实施例中的步骤S03。
在步骤S03′中，在所述导光板104的底面1041上布置粘合组件103；所述粘合组件103包括至少一个粘合部1031；每个粘合部1031从所述导光板104的入光面1043朝向远离所述入光面1043的方向延伸(如图10d所示)。
可选地，在本公开的一些实施例中，参见图1、图3、图5至图7，所述粘合组件103包括多个在第一方向上排列的粘合部1031，所述光源102包括多个在所述第一方向上排列的发光元件1022，并且在与所述第一方向垂直的第二方向上观看时，每个粘合部1031在所述多个发光元件1022中的相邻两个发光元件1022之间。
可选地，在本公开的一些实施例中，参见图1、图5，所述多个发光元件1022中的每一个构造成发出光束5，并且所述多个粘合部1031构造成每个粘合部1031在所述导光板104的所述底面1041上的正投影在所述多个发光元件1022的所述光束5在所述导光板104的所述底面1041上的正投影之外。
可选地，在本公开的一些实施例中，参见图1、图5、图6a，所述多个发光元件1022中的每一个构造成发出光束5，所述光束5在所述导光板104的所述底面1041上的正投影具有第一边51和第二边52，并且所述光束5的正投影的第一边51和第二边52中的一个相对于另一个成预定角度，所述预定角度为所述发光元件1022的发光角θ，并且每个粘合部1031具有等腰三角形的形状，所述等腰三角形的底边比所述等腰三角形的顶角更靠近所述导光板104的入光面1043，并且所述等腰三角形的顶角等于所述发光元件1022的发光角θ。
可选地，如图1和图5所示，在一些实施例中，所述粘合组件103包括多个粘合部1031；所述光源102包括多个发光元件1022；每个粘合部1031的位置对应于相邻两个发光元件1022之间的间隔。
在本公开的一些实施例中，所述粘合部朝向所述导光板的表面可以是粘性表面。当然，所述粘合部朝向所述支撑板的表面也可以是粘性表面；在这种情况下，可以使用双面胶带来制作所述粘合部(或，所述粘合组件)。利用上述布置，所述导光板和所述支撑板101的所述第一表面之间的结合更加稳固。每个 粘合部的位置对应于相邻两个发光元件之间的间隔，因此发光元件发出的光束基本上不会照射在所述粘合部上，减少了光的损失。当然，如附图3所示，也可以使用单独的粘合部1031将所述导光板104结合至所述支撑板101的第一表面1011。
可选地，如图1和图5所示，在一些实施例中，每个粘合部1031具有等腰三角形的形状；所述等腰三角形的底边对应于相邻两个发光元件1022之间的间隔；所述等腰三角形的顶角α等于所述发光元件的发光角θ。
在一些实施例中，所述发光元件可以例如是具有一定发光角的发光二极管(LED)。每个粘合部具有等腰三角形的形状；所述等腰三角形的底边对应于相邻两个发光元件之间的间隔；所述等腰三角形的顶角等于所述发光元件的发光角。利用上述布置，进一步避免了发光元件发出的光束照射在所述粘合部上，从而减少光的损失。
在本公开的一些实施例中，参见图5至图7，所述粘合组件103进一步包括连接所述多个粘合部1031的连接部1032。例如，所述连接部1032包括：带状的第一部分10321，所述带状的第一部分10321沿所述第一方向延伸；以及多个第二部分10322，所述多个第二部分10322从所述带状的第一部分10321分别朝向所述多个粘合部1031延伸并分别与所述多个粘合部1031连接，所述连接部1032粘接于所述支撑板101。根据本公开的一些示例，所述多个发光元件1022位于所述连接部1032的第一部分10321与所述导光板104的入光面1043之间，并且与所述连接部1032的多个第二部分10322交替排列。
可选地，如图5、图6a和图6b所示，在一些实施例中，所述粘合组件103进一步包括连接所述多个粘合部1031的连接部1032。
在一些实施例中，所述粘合组件进一步包括用于连接所述多个粘合部的连接部。所述连接部连接所述多个粘合部，使得多个粘合部能够按照预定的位置关系来布置。例如多个粘合部按照预定的间隔布置并且在多个粘合部与光源之间具有预定的相对位置关系。由此，不仅提高了多个粘合部的位置精度，也简化了施加粘合组件的工艺。所述连接部朝向所述支撑板的表面可以是粘性表面。当然，所述连接部背离所述支撑板的表面也可以是粘性表面；在这种情况下，可以使用双面胶带来制作整个粘合组件。例如，在向所述支撑板的第一表面施加粘合组件的工艺中，可以将如图6a或图6b所示的粘合组件整体地与所 述支撑板的预定区域对齐，从而按照预定的位置关系来布置所述多个粘合部1031。
在本公开的一些实施例中，参见图7，所述的方法还包括：在所述导光板104的朝向所述支撑板101的一侧设置反射元件105，所述反射元件105用于将从所述导光板104的底面1041出射的光通过所述底面1041反射到所述导光板104中。
参见图7，在本公开的一些实施例中，所述的方法还包括：提供背板106，所述支撑板101包括与所述第一表面1011相对的第二表面1012，并且所述第二表面1012以可滑动的方式设置在所述背板106的表面上。
参见图1、图2、图3、图5、图7，在本公开的一些实施例中，提供所述支撑板101和提供所述光源102共同包括：提供光源模块，所述光源模块包括：作为所述支撑板101的电路板；以及固定于所述电路板以被供给电力的作为所述光源102的多个发光元件1022。例如，提供所述支撑板101和提供所述光源102共同包括：提供灯条，所述灯条包括：作为所述支撑板101的柔性印刷电路板；以及固定于所述柔性印刷电路板的作为所述光源102的多个发光元件1022。
可选地，在一些实施例中，所述方法还包括：在所述导光板104靠近所述底面1042的一侧设置反射元件105(如图7所示)。
利用所述反射元件，能够进一步提高光源的光利用率，减少光的损失。所述反射元件可以是反射片，所述反射片的反射面朝向所述导光板的底面。所述反射元件还可以是布置在所述导光板的底面上的反射图案，从而将所述导光板内部的光线朝向所述导光板的出光面反射。
可选地，在一些实施例中，所述方法还包括：提供背板106。所述支撑板101包括与所述第一表面1011相对的第二表面1012；所述第二表面1012以可滑动的方式设置在所述背板106的表面上(如图7所示)。
根据本公开的实施例提供的背光模块、液晶显示装置、以及背光模块的制作方法，每个粘合部从所述光源的出光面朝向远离所述光源的方向延伸；所述导光板的底面经由所述至少一个粘合部粘附至所述支撑板101的所述第一表面，并且所述导光板的入光面直接接触所述光源的出光面。利用以上的布置形式，所述导光板与所述粘合组件接触的粘附区域能够尽可能地靠近所述光源的 出光面。由此，如果所述导光板的入光面发生了移动，那么所述导光板的入光面会带动所述光源的出光面移动。因此，当所述导光板由于温度变化或老化而发生形变时，所述导光板的入光面与所述光源之间的相对位置不会因为所述形变而发生变化。由此尽可能地增加了背光模块的亮度并减少了老化导致的光衰减。
本公开的说明书和权利要求中使用的不定冠词“一”应当被理解为表示“至少一个”，除非清楚地给出相反的指示。
还应当理解，除非清楚地相反地指示，在包括不止一个步骤或动作的任何方法中，该方法的步骤或动作的顺序不必限于所叙述的该方法的步骤或动作的顺序。
虽然上面已经示出了本公开的一些示例性实施例，但是本领域的技术人员将理解，在不脱离本公开的原理和精神的情况下，可以对这些示例性实施例做出改变，本公开的范围由权利要求及其等同物限定。

Claims (24)

  1. 一种背光模块，包括：
    支撑板，所述支撑板包括第一表面；
    固定在所述支撑板的所述第一表面上的光源，所述光源具有出光面，所述光源构造成从所述出光面发出光；
    布置在所述支撑板的所述第一表面上的粘合组件，所述粘合组件包括至少一个粘合部，所述至少一个粘合部从所述光源的出光面朝向远离所述光源的方向延伸；以及
    导光板，所述导光板包括：底面，所述导光板的底面经由所述粘合组件的所述至少一个粘合部粘附至所述支撑板的所述第一表面；与所述底面相对的顶面，所述顶面作为所述导光板的出光面；以及环绕所述底面和顶面的侧面，所述侧面的一部分作为所述导光板的入光面，所述光源发出的光通过所述导光板的入光面进入所述导光板。
  2. 如权利要求1所述的背光模块，其中，
    所述导光板的入光面直接接触所述光源的出光面。
  3. 如权利要求1所述的背光模块，其中，
    所述粘合组件包括多个在第一方向上排列的粘合部，所述光源包括多个在所述第一方向上排列的发光元件，并且在与所述第一方向垂直的第二方向上观看时，每个粘合部在所述多个发光元件中的相邻两个发光元件之间。
  4. 如权利要求3所述的背光模块，其中，
    所述多个发光元件中的每一个构造成发出光束，所述光束在所述导光板的所述底面上的正投影具有第一边和第二边，并且所述光束的正投影的第一边和第二边中的一个相对于另一个成预定角度，所述预定角度为所述发光元件的发光角，并且
    每个粘合部具有等腰三角形的形状，所述等腰三角形的底边比所述等腰三角形的顶角更靠近所述导光板的入光面，并且所述等腰三角形的顶角等于所述发光元件的发光角。
  5. 如权利要求3所述的背光模块，其中，
    所述多个发光元件中的每一个构造成发出光束，并且
    所述多个粘合部构造成每个粘合部在所述导光板的所述底面上的正投影在所述多个发光元件的所述光束在所述导光板的所述底面上的正投影之外。
  6. 如权利要求3所述的背光模块，其中，
    所述粘合组件进一步包括连接所述多个粘合部的连接部。
  7. 如权利要求6所述的背光模块，其中，
    所述连接部包括：带状的第一部分，所述带状的第一部分沿所述第一方向延伸；以及多个第二部分，所述多个第二部分从所述带状的第一部分分别朝向所述多个粘合部延伸并分别与所述多个粘合部连接，所述连接部粘接于所述支撑板。
  8. 如权利要求7所述的背光模块，其中，
    所述多个发光元件位于所述连接部的第一部分与所述导光板的入光面之间，并且与所述连接部的多个第二部分交替排列。
  9. 如权利要求1所述的背光模块，其中，
    所述粘合组件的材料包括胶带或粘合剂。
  10. 如权利要求1所述的背光模块，还包括：
    反射元件，所述反射元件设置在所述导光板的朝向所述支撑板的一侧并用于将从所述导光板的底面出射的光通过所述底面反射到所述导光板中。
  11. 如权利要求1至10中的任一项所述的背光模块，还包括：
    背板，其中所述支撑板包括与所述第一表面相对的第二表面，并且所述第二表面以可滑动的方式设置在所述背板的表面上。
  12. 如权利要求1至11中的任一项所述的背光模块，其中，
    所述支撑板是电路板，并且所述光源包括多个固定于电路板以被供给电力的发光元件。
  13. 一种液晶显示装置，包括：
    如权利要求1至12中的任一项所述的背光模块；和
    液晶显示面板，所述液晶显示面板具有入光面，
    其中，所述背光模块的所述导光板的出光面面对所述液晶显示面板的入光面。
  14. 一种背光模块的制作方法，包括：
    提供支撑板，所述支撑板包括第一表面；
    提供光源并将所述光源固定于所述支撑板的所述第一表面上，所述光源具有出光面，所述光源构造成从所述出光面发出光；
    提供导光板，所述导光板包括：底面；与所述底面相对的顶面，所述顶面作为所述导光板的出光面；以及环绕所述底面和顶面的侧面，所述侧面的一部分作为所述导光板的入光面，所述光源发出的光通过所述导光板的入光面进入所述导光板；
    在所述支撑板的所述第一表面上布置粘合组件，所述粘合组件包括至少一个粘合部，所述至少一个粘合部从所述光源的出光面朝向远离所述光源的方向延伸，或者在所述导光板的所述底面上布置所述粘合组件，所述粘合组件的所述至少一个粘合部从所述导光板的所述入光面朝向远离所述入光面的方向延伸；以及
    将所述导光板的所述底面经由所述粘合组件的所述至少一个粘合部粘附至所述支撑板的所述第一表面。
  15. 如权利要求14所述的方法，其中，
    所述导光板的入光面直接接触所述光源的出光面。
  16. 如权利要求14所述的方法，其中，
    所述粘合组件包括多个在第一方向上排列的粘合部，所述光源包括多个在所述第一方向上排列的发光元件，并且在与所述第一方向垂直的第二方向上观看时，每个粘合部在所述多个发光元件中的相邻两个发光元件之间。
  17. 如权利要求16所述的方法，其中，
    所述多个发光元件中的每一个构造成发出光束，所述光束在所述导光板的所述底面上的正投影具有第一边和第二边，并且所述光束的正投影的第一边和第二边中的一个相对于另一个成预定角度，所述预定角度为所述发光元件的发光角，并且
    每个粘合部具有等腰三角形的形状，所述等腰三角形的底边比所述等腰三角形的顶角更靠近所述导光板的入光面，并且所述等腰三角形的顶角等于所述发光元件的发光角。
  18. 如权利要求16所述的方法，其中，
    所述多个发光元件中的每一个构造成发出光束，并且
    所述多个粘合部构造成每个粘合部在所述导光板的所述底面上的正投影在 所述多个发光元件的所述光束在所述导光板的所述底面上的正投影之外。
  19. 如权利要求16所述的方法，其中，
    所述粘合组件进一步包括连接所述多个粘合部的连接部。
  20. 如权利要求19所述的方法，其中，
    所述连接部包括：带状的第一部分，所述带状的第一部分沿所述第一方向延伸；以及多个第二部分，所述多个第二部分从所述带状的第一部分分别朝向所述多个粘合部延伸并分别与所述多个粘合部连接，所述连接部粘接于所述支撑板。
  21. 如权利要求20所述的方法，其中，
    所述多个发光元件位于所述连接部的第一部分与所述导光板的入光面之间，并且与所述连接部的多个第二部分交替排列。
  22. 如权利要求14所述的方法，还包括：
    在所述导光板的朝向所述支撑板的一侧设置反射元件，所述反射元件用于将从所述导光板的底面出射的光通过所述底面反射到所述导光板中。
  23. 如权利要求14至22中的任一项所述的方法，还包括：
    提供背板，其中，所述支撑板包括与所述第一表面相对的第二表面，并且所述第二表面以可滑动的方式设置在所述背板的表面上。
  24. 如权利要求14至23中的任一项所述的方法，其中，
    提供所述支撑板和提供所述光源共同包括：
    提供光源模块，所述光源模块包括：作为所述支撑板的电路板；以及固定于所述电路板以被供给电力的作为所述光源的多个发光元件。
PCT/CN2019/103713 2018-11-01 2019-08-30 背光模块及其制作方法、液晶显示装置 WO2020088081A1 (zh)

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