WO2019062683A1 - 定位结构、背光源、显示模组及显示装置 - Google Patents

定位结构、背光源、显示模组及显示装置 Download PDF

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Publication number
WO2019062683A1
WO2019062683A1 PCT/CN2018/107215 CN2018107215W WO2019062683A1 WO 2019062683 A1 WO2019062683 A1 WO 2019062683A1 CN 2018107215 W CN2018107215 W CN 2018107215W WO 2019062683 A1 WO2019062683 A1 WO 2019062683A1
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WO
WIPO (PCT)
Prior art keywords
positioning
light guide
guide plate
contact
optical film
Prior art date
Application number
PCT/CN2018/107215
Other languages
English (en)
French (fr)
Inventor
马永达
乔勇
先建波
Original Assignee
京东方科技集团股份有限公司
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 filed Critical 京东方科技集团股份有限公司
Priority to US16/478,082 priority Critical patent/US10712496B2/en
Publication of WO2019062683A1 publication Critical patent/WO2019062683A1/zh

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Classifications

    • 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
    • G02B6/0085—Means for removing heat created by the light source from the package
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133314—Back frames
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133317—Intermediate frames, e.g. between backlight housing and front frame
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133322—Mechanical guidance or alignment of LCD panel support components

Definitions

  • the present disclosure relates to the field of display technologies, and in particular, to a positioning structure, a backlight, a display module, and a display device.
  • a liquid crystal display includes a liquid crystal display panel and a backlight, and the backlight is used to provide a light source for the liquid crystal display panel so that the LCD can display an image.
  • the main components of the backlight include a back plate, a frame, a plastic frame, an optical film, a light guide plate, and a light-emitting diode (LED) light bar, etc., and may also include a light guide plate and an optical film, respectively. Positioning structure for slice positioning.
  • the present disclosure provides a positioning structure, a backlight, a display module, and a display device.
  • the present disclosure provides a positioning structure for a backlight having a light guide plate and an optical film, the positioning structure comprising a structural body, wherein the structural body comprises:
  • each of the protruding structures forming a contact positioning surface adjacent to one end of the light guide plate, and at least two contact positioning surfaces located in the same plane form an end surface for positioning the light guide plate First positioning surface;
  • the structure body is provided with a second positioning surface for positioning an end surface of the optical film of the backlight, and the second positioning surface is located at a different plane from the first positioning surface.
  • the structural body further includes a bottom surface, and the contact positioning surface is formed as a surface disposed on the bottom surface and protruding from the bottom surface to be closest to the position of the light guide plate.
  • the distance from the contact positioning surface to the bottom surface is less than or equal to the amount of heat expansion and contraction of the light guide plate in the working state of the module, and is greater than a preset value, wherein the preset value is working in the module. In the state, the difference between the amount of heat expansion and contraction of the light guide plate and the amount of heat expansion and contraction of the optical film.
  • each of the protruding structures extends from a first surface of the structural body to a second surface opposite the first surface, wherein the first surface and the second surface respectively extend to form Both ends of the protruding structure are described.
  • a groove having a quadrangular cross section is formed between adjacent protruding structures, and an inner bottom surface of the groove is formed as a bottom surface of the structural body.
  • the extending direction of the protruding structure is parallel or perpendicular to the first direction, wherein the first direction is a length direction of an end surface of the light guiding plate positioned by the first positioning surface.
  • the bottom surface is parallel to the contact positioning surface.
  • the protruding structure is formed as a column disposed on the bottom surface, and the extending direction of the column is perpendicular to the bottom surface.
  • a plurality of the protruding structures formed as cylinders are arranged in a row on the bottom surface.
  • a spacing width between two adjacent contact positioning surfaces is less than twice a width of a contact width of a larger one of the adjacent two contact positioning surfaces, and is greater than a phase Between the two adjacent contact positioning surfaces, the width is greater than one-half of the width of the contact positioning surface, wherein the second direction is the adjacent two contact positions determined on the plane of the first positioning surface The direction of the minimum distance between faces.
  • the second body is vertically disposed on the third surface of the first body; wherein the contact portion is disposed on the first body, and the second positioning surface is disposed on the second surface And the contact positioning surface is perpendicular to the third surface and the second positioning surface.
  • the number of the second positioning surfaces is at least two, respectively located in different planes, and each of the second positioning surfaces is perpendicular to the first positioning surface.
  • At least two of the second positioning surfaces are formed in a stepped shape.
  • the structural body includes a fourth surface perpendicular to the first positioning surface, and the fourth surface is provided with grooves of different sizes, and the grooves form at least two step surfaces, each of which The step faces are respectively formed as one of the second positioning faces.
  • the present disclosure provides a backlight, including a light guide plate and an optical film, wherein the backlight further includes a positioning structure as described above, wherein one end surface of the light guide plate and the first positioning One end surface of the optical film is connected to the second positioning surface in a face-to-face connection.
  • the present disclosure provides a display module including the backlight as described above.
  • the present disclosure provides a display device comprising the display module as described above.
  • FIG. 1 is a perspective structural view of a backlight of the positioning structure using some embodiments of the present disclosure
  • FIG. 2 is a top plan view showing a positional relationship between the positioning structure and a light guide plate according to some embodiments of the present disclosure
  • FIG. 3 is a perspective structural view of a display module of the positioning structure according to some embodiments of the present disclosure.
  • FIG. 4 is a schematic structural view illustrating a positional relationship between the positioning structure and a light guide plate according to some embodiments of the present disclosure
  • FIG. 5 is a perspective view of the positioning structure according to some embodiments of the present disclosure.
  • FIG. 6 is a perspective view of the positioning structure of some embodiments of the present disclosure.
  • the positioning structure size design needs to reserve the thermal expansion size of the light guide plate and the optical film to meet the positioning redundancy requirement.
  • the thermal expansion coefficients of the light guide plate and the optical film are different, in order to meet the positioning redundancy requirements of different sizes, the positioning of the light guide plate and the optical film is usually realized by different positioning structures, which causes the structure of the entire backlight to be complicated.
  • Some embodiments of the present disclosure provide a positioning structure that is applied to a backlight with which the light guide plate and the optical film can be positioned simultaneously.
  • the positioning structure of some embodiments of the present disclosure includes a structural book, wherein the structural body comprises:
  • each of the protruding structures forming a contact positioning surface adjacent to one end of the light guide plate, and at least two contact positioning surfaces located in the same plane form an end surface for positioning the light guide plate First positioning surface;
  • the structure body is provided with a second positioning surface for positioning an end surface of the optical film of the backlight, and the second positioning surface is located at a different plane from the first positioning surface.
  • the positioning structure of some embodiments of the present disclosure includes a first positioning surface for positioning of a light guide plate and a second positioning surface for optical film positioning, wherein the first positioning surface includes a plurality of contact positionings separated from each other
  • the plurality of contact positioning surfaces separated from each other are used to form a space between the first positioning surfaces of the light guide plate to increase the telescopic range of the light guide plate in the working state of the module, so as to supplement the thermal expansion of the light guide plate and the optical film.
  • the difference in the amount of positioning between the light guide plate and the optical film caused by the difference in coefficients makes the positioning structure for the light guide plate and the optical film a structure, and the structure of the entire backlight can be made simpler.
  • the structural body of the positioning structure further includes a bottom surface, and the contact positioning surface is formed on the bottom surface, and a protruding structure protruding from the bottom surface is a surface closest to the position of the light guide plate.
  • the distance between the contact positioning surface and the bottom surface is less than or equal to a heat transfer amount of the light guide plate when the module is in operation, and is greater than a preset value, wherein the preset value is in a working state of the module. The difference between the amount of heat expansion and contraction of the light guide plate and the amount of heat expansion and contraction of the optical film.
  • FIG. 1 is a perspective structural view of a backlight of the positioning structure using some embodiments of the present disclosure
  • FIG. 2 is a schematic top plan view illustrating a positional relationship between the positioning structure and a light guide plate according to some embodiments of the disclosure.
  • the structural body of the positioning structure 100 includes a first body 110 and a second body 120 , wherein a first positioning surface for positioning an end surface of the light guide plate 200 is formed on the first body A second positioning surface for positioning one end surface of the optical film 300 is formed on the second body 120.
  • the first body 110 includes a bottom surface 111.
  • the bottom surface 111 is provided with a plurality of protruding structures 112.
  • the surfaces of the plurality of protruding structures 112 away from the bottom surface 111 are in the same plane, wherein each protruding structure 112 is away from the bottom surface 111.
  • the surface is formed as a contact positioning surface 1121, and the plurality of contact positioning surfaces 1121 of the plurality of protruding structures 112 away from the surface of the bottom surface 111 are formed as a first positioning surface contact positioning surface for positioning one end surface of the light guide plate 200.
  • the first body 110 of the positioning structure 100 is vertically disposed on the back plate 400, and the first positioning formed by combining one end surface of the light guide plate 200 with the plurality of contact positioning surfaces 1121 The faces are opposite and close to each other.
  • each protruding structure 112 extends from the first surface 1101 of the first body 110 to the second surface 1102 opposite to the first surface 1101, wherein the end faces of each protruding structure 112 are respectively first
  • the surface 1101 and the second surface 1102 extend to form a contact positioning surface, and in this embodiment, the second surface 1102 is formed as a surface that is in contact with the backing plate 400, and the first surface 1101 is disposed in parallel with the second surface 1102.
  • each of the protruding structures 112 extends perpendicular to the first surface 1101 and the second surface 1102 while being perpendicular to the backing plate 400 for mounting.
  • the surface of the positioning structure 100 is also perpendicular to the longitudinal direction (first direction) of one end surface of the light guide plate 200 positioned by the first positioning surface.
  • the adjacent protruding structures 112 are formed with a groove 113 having a quadrangular cross section, and the inner bottom surface of the groove 113 is formed as the bottom surface 111 of the structural body.
  • the surface on which the contact positioning surface 1121 is located is used to determine the direction of the minimum distance between the adjacent two contact positioning surfaces 1111 as the second direction.
  • the interval width between two adjacent contact positioning surfaces 1121 is less than twice the width of the larger contact contact positioning surface 1121 of the adjacent two contact positioning surfaces 1121, and is greater than two adjacent
  • the width of the contact positioning surface 1121 is larger than one-half of the width of the contact surface 1121.
  • the direction of the minimum distance between two adjacent contact positioning surfaces 1121 is the plane of the contact positioning surface 1121 and the direction perpendicular to the contact positioning surface 1121. The direction, that is, the direction perpendicular to the extending direction of the protruding structure 112.
  • the distance a of each protruding structure 112 contacting the positioning surface 1121 to the bottom surface 111 is less than or equal to the working of the light guide plate 200 in the module.
  • the amount of heat expansion and contraction in the state is greater than a preset value, which is the difference between the amount of heat expansion and contraction of the light guide plate 200 and the amount of heat expansion and contraction of the optical film 300 when the module is in the working state.
  • the first positioning surface for positioning the light guide plate includes a plurality of contact positioning surfaces, and an interval of a depth is formed between the plurality of contact positioning surfaces.
  • the positioning redundancy design of the light guide plate can be matched with the positioning redundancy design of the optical film. Therefore, optionally, a is less than or equal to when the light guide plate 200 is in the working state of the module.
  • the amount of heat expansion and contraction is greater than the difference between the amount of heat expansion and contraction of the predetermined light guide plate 200 and the amount of thermal expansion and contraction of the optical film 300.
  • the ratio of the coefficient of thermal expansion of the optical film to the coefficient of thermal expansion of the light guide plate is 16:17. Therefore, when the amount of heat expansion and contraction of the light guide plate is ⁇ L, the amount of heat expansion and contraction of the optical film is 16 ⁇ L/17, and the light guide plate 200 The difference between the amount of heat expansion and contraction and the amount of heat expansion and contraction of the optical film is ⁇ L/17.
  • a second positioning surface for positioning an end surface of the optical film 300 is formed on the second body 120 , wherein the second body 120 is vertically disposed on the first body 110 .
  • the third surface is on the 1103.
  • the other end surface of the second body 120 opposite to an end surface of the third surface 1103 is used for mating with the positioning hole on the optical film 300 to support the optical film 300. Therefore, the surface of the second body 120 that is mated with the positioning hole of the optical film 300 is formed as a second positioning surface.
  • the positioning structure 100 is disposed on the back plate 400 , and the first positioning surface including the plurality of contact positioning surfaces 1121 is perpendicular to the back plate 400 , and the second body 120 is vertically disposed on the third surface 1103 of the first body 110, and a surface of the second body 120 away from the third surface 1103 is formed as a second positioning surface.
  • the light guide plate 200 is disposed on the back plate 400, and an end surface of the light guide plate 200 is in contact with the first positioning surface, and the optical film 300 is disposed parallel to the light guide plate 200, and is disposed through the positioning hole and the second body 120.
  • the two positioning surfaces cooperate with each other.
  • the present disclosure further provides a positioning structure of some embodiments.
  • a planar structure diagram of a positional relationship between the positioning structure and the light guide plate is shown in FIG. 4.
  • the structural body of the positioning structure 100 includes a first body 110 and a second body 120, wherein a first positioning surface for positioning an end surface of the light guide plate 200 is formed on the first body 110, and a second positioning surface for positioning an end surface of the optical film is formed on the first body Two bodies 120.
  • the structure of the second body 120 is the same as that of the second body 120 described above, and details are not described herein again.
  • the first body 110 has the same structure as the first body 110.
  • the first body 110 includes a bottom surface 111.
  • the bottom surface 111 is provided with a plurality of protruding structures 112.
  • the surfaces of the plurality of protruding structures 112 away from the bottom surface 111 are in the same plane, wherein each protrusion
  • the surface of the structure 112 away from the bottom surface 111 is formed as a contact positioning surface 1121, and the plurality of contact positioning surfaces 1121 of the surface of the plurality of protruding structures 112 away from the bottom surface 111 are formed as first positioning for positioning one end surface of the light guide plate 200. Face contact positioning surface.
  • each protruding structure 112 extends from the first surface 1101 of the first body 110 to an opposite second surface (not shown).
  • the first surface 1101 and the first surface The two surfaces are respectively perpendicular to the back plate 400 on which the positioning structure 100 is disposed, and the first surface 1101 and the second surface respectively extend to form end faces of each of the protruding structures 112 contacting the positioning surface.
  • each of the protruding structures 112 extends perpendicular to the first surface 1101 and the second surface 1102, but is parallel to the backing plate 400, and is also parallel to the guiding of the first positioning surface.
  • the longitudinal direction (first direction) of one end surface of the light plate 200 is also parallel to the guiding of the first positioning surface.
  • the adjacent protruding structures 112 are formed with a groove 113 having a quadrangular cross section, and the inner bottom surface of the groove 113 is formed as the bottom surface 111 of the structural body.
  • the distance a of each protruding structure 112 contacting the positioning surface 1121 to the bottom surface 111 is less than or equal to
  • the amount of heat expansion and contraction of the light guide plate 200 in the working state of the module is greater than a preset value, which is the difference between the amount of heat expansion and contraction of the light guide plate 200 and the amount of thermal expansion and contraction of the optical film 300 when the module is in the working state.
  • the structural body of the positioning structure 100 is formed as an integrated structure, including a bottom surface 111.
  • the bottom surface 111 is provided with a plurality of protruding structures 112 in the shape of a cylinder.
  • the surface of the plurality of protruding structures 112 away from the bottom surface 111 is located in the same plane perpendicular to the bottom surface 111.
  • the surface of each protruding structure 112 away from the bottom surface 111 is formed as a contact positioning surface 1121, and the plurality of contact positioning surfaces 1121 are collectively formed for Positioning a first positioning surface of one end surface of the light guide plate to contact the positioning surface.
  • the bottom surface 111 is parallel to the contact positioning surface 1121 and parallel to the end surface of the light guide plate to be positioned, each protruding structure 112 is perpendicular to the end surface of the light guide plate to be positioned, and optionally, the plurality of protruding structures 112 Arranged in rows and columns on the bottom surface.
  • the direction of the minimum distance between the adjacent two contact positioning surfaces 1121 is the direction between the center points of the circular contact positioning surfaces 1121, and also That is the second direction.
  • the spacing width between the adjacent two protruding structures 112 is less than twice the width of the larger contact contact positioning surface of the adjacent two of the contact positioning surfaces, and is greater than the adjacent two of the contacts.
  • the width of the positioning surface is larger than one-half of the width of the contact positioning surface to ensure the support strength of the positioning structure 100 to the light guide plate.
  • the distance a from the positioning surface 1121 to the bottom surface 111 of each protruding structure 112 is less than or equal to the working state of the light guide plate in the module.
  • the amount of heat expansion and contraction is greater than a preset value, which is the difference between the amount of heat expansion and contraction of the light guide plate and the amount of thermal expansion and contraction of the optical film when the module is in operation.
  • a preset value which is the difference between the amount of heat expansion and contraction of the light guide plate and the amount of thermal expansion and contraction of the optical film when the module is in operation.
  • the positioning structure 100 includes a fourth surface 1104 that is perpendicular to a plane in which the contact positioning surface 1121 is located, and the fourth surface 1104 is provided with grooves of different sizes to form at least two The step surface 11041, wherein each step surface 11041 is formed as a second positioning surface for positioning installation of the optical film, and a second positioning surface can be placed on the optical film.
  • the number of the second positioning faces may be at least two, respectively located in different planes.
  • the positioning structure 100 when the positioning structure is mounted on the backlight, the positioning structure 100 is disposed on the back plate, and the surface of the positioning structure 100 opposite to the fourth surface 1104 is closely connected with the back plate.
  • the first positioning surface including the plurality of contact positioning faces 1121 is made perpendicular to the backing plate 400.
  • the light guide plate 200 is disposed on the back plate 400, and one end surface of the light guide plate 200 is in contact with the first positioning surface; the optical film 300 is disposed parallel to the light guide plate 200, and the optical film 300 is placed on one of the step faces 11041. Thereby, the light guide plate 200 and the optical film 300 are positioned and installed.
  • FIG. 1 to FIG. 5 are only partial structural diagrams for respectively positioning one end surface of the light guide plate and the optical film. Based on the above description, those skilled in the art should be able to The specific structure of the entire positioning structure for positioning each of the end faces of the light guide plate and the optical film is known and will not be described in detail herein.
  • the present disclosure also provides a positioning structure of some embodiments.
  • the structural body of the positioning structure 100 is formed as an integrated structure, including a surface provided with a plurality of protruding structures 112, adjacent A groove 113 having a quadrangular cross section is formed between the protruding structures 112, and an inner bottom surface of the groove 113 is formed as a bottom surface 111 of the structural body.
  • a plurality of protruding structures 112 are located on the same plane away from the surface of the bottom surface 111.
  • a surface of each protruding structure 112 away from the bottom surface 111 is formed as a contact positioning surface 1121, and a plurality of contact positioning surfaces 1121 away from the bottom surface 111 are collectively formed for positioning.
  • the first positioning surface of one end surface of the light guide plate 200 contacts the positioning surface.
  • each protruding structure 112 extends from a first surface 1101 of the first body 110 to a second surface 1102 opposite the first surface 1101, wherein the first surface 1101 and the second surface 1102 respectively extend to form each The protruding structure 112 contacts both end faces of the positioning surface, and in some embodiments, the second surface 1102 is formed as a surface that conforms to the backing plate, and the first surface 1101 is disposed in parallel with the second surface 1102. Based on the arrangement, the extending direction of the protruding structure 112 is perpendicular to the backing plate, which is the same as the setting structure and manner of some embodiments shown in FIG. 1 above.
  • the width of the groove 113 between the protruding structures 112 and the contact positioning surface 1121 is the same as that of some embodiments shown in FIG. 1 above, and details are not described herein again.
  • a plurality of step faces are disposed at an upper end of the first surface 1101 and parallel to the first surface 1101, and each step surface is formed as a second positioning surface 130 for carrying one
  • An optical film is disposed on each of the second positioning surfaces 130, and the groove 131 is formed as a positioning and matching portion for positioning the optical film.
  • the optical film can be correspondingly disposed on the optical film. Protrusions thereby forming matching mating engagement portions for positioning mounting of the optical diaphragm on the second positioning surface 130.
  • the positioning structure includes two portions disposed at an angle for positioning the adjacent two end faces of the light guide plate and the optical film, respectively.
  • the positioning structure 100 is disposed on the back plate, and the first positioning surface including the plurality of contact positioning surfaces 1121 is perpendicular to the back plate, and the second positioning surface 130 is parallel to the back plate, and the light guide plate is disposed.
  • the optical film is disposed parallel to the light guide plate, and is placed on the second positioning surface 130, and The positioning mating portion on the optical film is aligned with the positioning mating portion on the second positioning surface 130 to complete the positioning and mounting of the optical film.
  • the structure for forming the first positioning surface and the structure for forming the second positioning surface are not related to each other.
  • the structure for forming the first positioning surface adopts one of the above structural forms
  • the structure for forming the second positioning surface is not limited to the structure respectively defined in some embodiments described above.
  • the backlight may include a light guide plate and an optical film
  • the backlight may further include a positioning structure of any of the above structures, wherein one end surface of the light guide plate The first positioning surface of the positioning structure is in contact with the first positioning surface, and the one end surface of the optical film is matched with the second positioning surface.
  • the backlight may further include a frame, a back plate, a light source and the like. Taking some embodiments as an example, as shown in FIG. 3, the optical film is disposed in a space formed by the frame 3, and the back plate 400 is disposed. The member with the frame 3 is formed as a backlight 2.
  • the backlight 2 of the above configuration is combined with the display panel 1 to form a display module.
  • Some embodiments of the present disclosure also provide a display module and a display device, respectively, including a backlight configured as above. Based on the above detailed description of the positioning structure, those skilled in the art should be able to understand the specific structure of the backlight using the positioning structure of the present disclosure, which will not be described in detail herein.
  • the positioning structure, the backlight, the display module, and the display device of some embodiments of the present disclosure are configured by setting a first positioning surface for positioning the light guide plate to a plurality of contact positioning surfaces separated from each other, and using Forming a space between each contact positioning surface of the positioning light guide plate to increase the retractable range of the light guide plate in the working state of the module, and supplementing the light guide plate and the optical film due to different thermal expansion coefficients of the light guide plate and the optical film.
  • the difference in positioning redundancy is such that the positioning structure for the light guide plate and the optical film can be formed into one structure, and the structure of the entire backlight can be made simpler, and the related art light guide plate and the optical film are differently positioned.
  • the resulting backlight structure is complicated.

Abstract

本公开提供一种定位结构、背光源、显示模组及显示装置，该定位结构应用于具有导光板和光学膜片的背光源，所述定位结构包括结构本体，其中，所述结构本体包括：多个相互间隔的突出结构，每一所述突出结构靠近所述导光板的一端形成接触定位面，至少两个位于同一平面的所述接触定位面形成用于定位所述导光板的一端面的第一定位面；所述结构本体设置有用于定位所述背光源的光学膜片的一端面的第二定位面，所述第二定位面与所述第一定位面位于不同平面。

Description

定位结构、背光源、显示模组及显示装置
相关申请的交叉引用
本申请主张在2017年9月30日在中国提交的中国专利申请号No.201721278800.5的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及显示器技术领域，尤其涉及一种定位结构、背光源、显示模组及显示装置。
背景技术
液晶显示器(Liquid Crystal Display，简称LCD)包括液晶显示面板和背光源，背光源用于为液晶显示面板提供光源，使得LCD可以显示图像。
通常，背光源的主要部件包括背板、边框、胶框、光学膜片、导光板和发光二极管(Light-emitting diode，简称LED)灯条等，另外还可以包括分别用于导光板和光学膜片定位的定位结构。
发明内容
本公开提供一种定位结构、背光源、显示模组及显示装置。
第一方面，本公开提供一种定位结构，应用于具有导光板和光学膜片的背光源，所述定位结构包括结构本体，其中，所述结构本体包括：
多个相互间隔的突出结构，每一所述突出结构靠近所述导光板的一端形成接触定位面，至少两个位于同一平面的所述接触定位面形成用于定位所述导光板的一端面的第一定位面；
所述结构本体设置有用于定位所述背光源的光学膜片的一端面的第二定位面，所述第二定位面与所述第一定位面位于不同平面。
可选地，所述结构本体还包括底面，所述接触定位面形成为设置于所述底面上且相对于所述底面突出的突出结构上距离导光板位置最近的表面。
可选地，所述接触定位面到所述底面的距离小于等于所述导光板在模组 工作状态时的受热伸缩量，且大于预设数值，其中，所述预设数值为在模组工作状态时，所述导光板的受热伸缩量与所述光学膜片的受热伸缩量的差值。
可选地，每一所述突出结构从所述结构本体的第一表面延伸至与所述第一表面相对的第二表面，其中，所述第一表面和所述第二表面分别延伸形成所述突出结构的两端面。
可选地，相邻所述突出结构之间形成为截面为四边形的凹槽，所述凹槽的内底面形成为所述结构本体的底面。
可选地，所述突出结构的延伸方向平行或垂直于第一方向，其中，所述第一方向为所述第一定位面所定位的所述导光板的一端面的长度方向。
可选地，所述底面平行于所述接触定位面。
可选地，所述突出结构形成为设置于所述底面上的柱体，且所述柱体的延伸方向垂直于所述底面。
可选地，多个形成为柱体的所述突出结构在所述底面上成行列排列。
可选地，在第二方向上，相邻两个所述接触定位面之间的间隔宽度小于相邻两个所述接触定位面中宽度较大的接触定位面宽度的两倍，且大于相邻两个所述接触定位面中宽度较大接触定位面的宽度的二分之一，其中，所述第二方向为在所述第一定位面所在平面确定的相邻两个所述接触定位面之间最小距离的方向。
可选地，所述第二本体竖直设置于所述第一本体的第三表面上；其中所述接触部设置于所述第一本体上，所述第二定位面设置于所述第二本体上，且所述接触定位面垂直于所述第三表面和所述第二定位面。
可选地，所述第二定位面的数量至少为两个，分别位于不同平面，且每一所述第二定位面均垂直于所述第一定位面。
可选地，至少两个所述第二定位面形成为台阶状。
可选地，所述结构本体包括垂直于所述第一定位面的第四表面，所述第四表面上开设有不同尺寸的凹槽，所述凹槽形成至少两个台阶面，每一所述台阶面分别形成为一个所述第二定位面。
第二方面，本公开提供一种背光源，包括导光板和光学膜片，其中，所述背光源还包括如上所述的定位结构，其中所述导光板的其中一端面与所述 第一定位面对位连接，所述光学膜片的其中一端面与所述第二定位面对位连接。
第三方面，本公开提供一种显示模组，包括如上所述的背光源。
第四方面，本公开提供一种显示装置，包括如上所述的显示模组。接触定位面接触定位面
附图说明
图1为采用本公开的一些实施例的所述定位结构的背光源的立体结构示意图；
图2为说明本公开的一些实施例的所述定位结构与导光板之间位置关系的俯视结构示意图；
图3为采用本公开的一些实施例的所述定位结构的显示模组的立体结构示意图；
图4为说明本公开的一些实施例的所述定位结构与导光板之间位置关系的结构示意图；
图5为本公开的一些实施例的所述定位结构的立体示意图；
图6为本公开的一些实施例的所述定位结构的立体示意图。
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作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
背光源使用时导光板和光学膜片均会受热膨胀，因此定位结构尺寸设计需要预留导光板和光学膜片的热膨胀尺寸，以满足定位冗余需求。
相关技术中，由于导光板和光学膜片的热膨胀系数不同，为满足不同尺寸的定位冗余需求，导光板和光学膜片的定位通常采用不同定位结构实现，造成整个背光源的结构比较复杂。
本公开的一些实施例提供一种定位结构，其应用于背光源，采用该定位 结构，可以同时为导光板和光学膜片进行定位。
本公开的一些实施例的所述定位结构，包括结构本本，其中，所述结构本体包括：
多个相互间隔的突出结构，每一所述突出结构靠近所述导光板的一端形成接触定位面，至少两个位于同一平面的所述接触定位面形成用于定位所述导光板的一端面的第一定位面；
所述结构本体设置有用于定位所述背光源的光学膜片的一端面的第二定位面，所述第二定位面与所述第一定位面位于不同平面。
本公开的一些实施例的所述定位结构，包括用于导光板定位的第一定位面和用于光学膜片定位的第二定位面，其中，第一定位面包括相互分离的多个接触定位面，相互分离的多个接触定位面使用于导光板定位的第一定位面之间形成间隔，增加导光板在模组工作状态时的可伸缩范围，以补充由于导光板和光学膜片的热膨胀系数不同导致的导光板与光学膜片之间定位冗余量的差异，从而使得用于导光板和光学膜片的定位结构可以形成为一个结构，整个背光源的结构可以更得简单。
具体地，所述定位结构的结构本体还包括底面，所述接触定位面形成为设置于所述底面上，且相对于所述底面突出的突出结构上距离导光板位置最近的表面。可选可选地，接触定位面到所述底面的距离小于等于所述导光板在模组工作状态时的受热伸缩量，且大于预设数值，其中所述预设数值为在模组工作状态时，所述导光板的受热伸缩量与所述光学膜片的受热伸缩量的差值。
图1为采用本公开的一些一些实施例的所述定位结构的背光源的立体结构示意图，图2为说明公开的一些实施例的所述定位结构与导光板之间位置关系的俯视结构示意图。参阅图1和图2，在一些实施例中，定位结构100的结构本体包括第一本体110和第二本体120，其中用于定位导光板200的一端面的第一定位面形成于第一本体110上，用于定位光学膜片300的一端面的第二定位面形成于第二本体120上。
本公开一些实施例中，第一本体110包括底面111，底面111上设置有多个突出结构112，多个突出结构112远离底面111的表面位于同一平面，其中， 每一突出结构112远离底面111的表面形成为一个接触定位面1121，并且该多个突出结构112的远离底面111的表面的多个接触定位面1121形成为用于定位导光板200的一端面的第一定位面接触定位面。
参阅图1与图2，在背光源上，定位结构100的第一本体110竖直地设置于背板400上，导光板200的一端面与多个接触定位面1121组合所形成的第一定位面相对且贴合接触。
本公开一些实施例中，每一突出结构112从第一本体110的第一表面1101延伸至与第一表面1101相对的第二表面1102，其中，每一突出结构112的两端面分别为第一表面1101和第二表面1102延伸形成接触定位面，且该实施例中，第二表面1102形成为与背板400相贴合的表面，第一表面1101与第二表面1102相平行设置。基于该设置结构，参阅图1和图2所示，在一些实施例中，每一突出结构112的延伸方向垂直于第一表面1101和第二表面1102，同时垂直于背板400的用于安装定位结构100的表面，此外也垂直于第一定位面所定位的导光板200的一端面的长度方向(第一方向)。
进一步参阅图1和图2，基于上述设置方式，在一些实施例中，相邻突出结构112之间形成为截面为四边形的凹槽113，凹槽113的内底面形成为结构本体的底面111。
本公开的一些实施例中，接触定位面1121所在表面，用于确定相邻两个接触定位面1121之间最小距离的方向为第二方向。在第二方向上，相邻两个所述接触定位面1121之间的间隔宽度小于相邻两个接触定位面1121中宽度较大的接触定位面1121宽度的两倍，且大于相邻两个接触定位面1121中宽度较大接触定位面1121的宽度的二分之一。本公开具体实施例中，如图所示1和图2所示，相邻两个接触定位面1121之间最小距离的方向为在接触定位面1121所在平面、垂直于接触定位面1121的延伸方向的方向，也即垂直于突出结构112的延伸方向的方向。
另一方面，如图2所示，每一突出结构112上接触定位面1121到底面111的距离a(也即突出结构112的相对于底面111突出的高度)小于等于导光板200在模组工作状态时的受热伸缩量，且大于预设数值，该预设数值为在模组工作状态时，导光板200的受热伸缩量与光学膜片300受热伸缩量的差值。
由于光学膜材的热膨胀系数与导光板的热膨胀系数两者存在差异，因此用于定位导光板的第一定位面包括多个接触定位面，多个接触定位面之间形成深度为a的间隔，以增加导光板在模组工作状态时的可伸缩范围。为保证通过该深度a的设置，能够使得导光板的定位冗余设计与光学膜片的定位冗余设计相匹配，因此可选可选地，a小于等于导光板200在模组工作状态时的受热伸缩量，且大于预设导光板200的受热伸缩量与光学膜片300受热伸缩量的差值。
通常光学膜材的热膨胀系数与导光板的热膨胀系数的比值为16：17，因此当导光板的受热伸缩量为△L时，光学膜材的受热伸缩量为16△L/17，导光板200的受热伸缩量与光学膜片的受热伸缩量的差值为△L/17。
参阅图1和图2，本公开一些实施例中，用于定位光学膜片300的一端面的第二定位面形成于第二本体120上，其中第二本体120竖直设置于第一本体110的第三表面1103上。第二本体120的与贴合于第三表面1103一端面相对的另一端面，用于与光学膜片300上的定位孔配合连接，以支撑光学膜片300。因此，第二本体120的与光学膜片300的定位孔配合连接的表面形成为第二定位面。
采用一些实施例的所述定位结构，参阅图1至图3所示，定位结构100设置于背板400上，包括多个接触定位面1121的第一定位面垂直于背板400，第二本体120竖直设置于第一本体110的第三表面1103上，第二本体120远离第三表面1103的表面形成为第二定位面。导光板200设置于背板400上，且导光板200一端面与第一定位面贴合接触，光学膜片300平行于导光板200设置，通过所设置的定位孔与第二本体120上的第二定位面配合连接。
此外，本公开还提供一些实施例的定位结构，参阅图4所示，一些实施例所述定位结构与导光板之间位置关系的平面结构示意图，一些实施例中，定位结构100的结构本体包括第一本体110和第二本体120，其中用于导光板200的一端面定位的第一定位面形成于第一本体110上，用于光学膜片的一端面定位的第二定位面形成于第二本体120上。
其中，在一些实施例中，第二本体120的结构与上述的第二本体120的结构相同，在此不再赘述。
另外，与上述的第一本体110结构相同，第一本体110包括底面111，底面111上设置有多个突出结构112，多个突出结构112远离底面111的表面位于同一平面，其中，每一突出结构112远离底面111的表面形成为一个接触定位面1121，并且该多个突出结构112的远离底面111的表面的多个接触定位面1121形成为用于定位导光板200的一端面的第一定位面接触定位面。
与上述的第一本体110结构不同，每一突出结构112从第一本体110的第一表面1101延伸至相对的第二表面(图中未显示)，该实施例中，第一表面1101和第二表面分别垂直于设置定位结构100的背板400，且第一表面1101和第二表面分别延伸形成每一突出结构112接触定位面的两端面。基于该设置结构，在一些实施例中，每一突出结构112的延伸方向垂直于第一表面1101和第二表面1102，但平行于背板400，此外也平行于第一定位面所定位的导光板200的一端面的长度方向(第一方向)。
进一步参阅图4，基于上述设置方式，在一些实施例中，相邻突出结构112之间形成为截面为四边形的凹槽113，凹槽113的内底面形成为结构本体的底面111。
可选地，与上述一些实施例相同，如图4所示，每一突出结构112上接触定位面1121到底面111的距离a(也即突出结构112的相对于底面111突出的高度)小于等于导光板200在模组工作状态时的受热伸缩量，且大于预设数值，该预设数值为在模组工作状态时导光板200的受热伸缩量与光学膜片300受热伸缩量的差值。具体该差值的确定方式可以参阅以上的描述，在此不再赘述。
本公开还提供一些实施例的定位结构，参阅图5所示，定位结构100的结构本体形成为一体设置结构，包括底面111，底面111上设置有多个呈柱体的突出结构112，延伸方向垂直于底面111，多个突出结构112远离底面111的表面位于同一平面，其中每一突出结构112远离底面111的表面形成为一个接触定位面1121，并且多个接触定位面1121共同形成为用于定位导光板的一端面的第一定位面，接触定位面。
该实施例中，底面111平行于接触定位面1121，且平行于导光板需要被定位的端面，每一突出结构112垂直于导光板需要被定位的端面，而且可选 地，多个突出结构112在底面上成行列排列。
进一步，可选地，该实施例中，在接触定位面1121所在表面，相邻两个接触定位面1121之间最小距离的方向为圆形的接触定位面1121的中心点之间的方向，也即第二方向。在第二方向上，相邻两个突出结构112之间的间隔宽度小于相邻两个所述接触定位面中宽度较大的接触定位面宽度的两倍，且大于相邻两个所述接触定位面中宽度较大接触定位面的宽度的二分之一，以保证定位结构100对导光板的支撑强度。
另一方面，如图5所示，每一突出结构112上接触定位面1121到底面111的距离a(也即突出结构112的相对于底面111突出的高度)小于等于导光板在模组工作状态时的受热伸缩量，且大于预设数值，该预设数值为在模组工作状态时，导光板的受热伸缩量与光学膜片受热伸缩量的差值。具体该差值的确定方式可以参阅上述受热伸缩量与光学膜片受热伸缩量的差值的描述，在此不再赘述。
进一步，结合图5，本公开的一些实施例中，定位结构100包括垂直于接触定位面1121所在平面的第四表面1104，该第四表面1104上开设有不同尺寸的凹槽，形成至少两个台阶面11041，其中，每一台阶面11041分别形成为一个第二定位面以用于光学膜片的定位安装，且一个第二定位面可以放置一个光学膜片。
因此，该一些实施例中，第二定位面的数量可以为至少两个，分别位于不同平面。
采用本公开的一些实施例的所述定位结构，当定位结构安装于背光源时，定位结构100设置于背板上，定位结构100的与第四表面1104相对的表面与背板贴合连接，使包括多个接触定位面1121的第一定位面垂直于背板400。导光板200设置于背板400上，且导光板200的一端面与第一定位面贴合接触；光学膜片300平行于导光板200设置，且光学膜片300放置于其中一台阶面11041上，从而实现导光板200和光学膜片300定位安装。
可以理解的是，图1至图5所示各实施例的定位结构，仅为部分结构示意图，用于分别定位导光板和光学膜片的一个端面，基于上述的描述，本领域技术人员应该能够了解用于导光板和光学膜片每一端面定位的整个定位结 构的具体结构，在此不详细描述。
此外，本公开还提供一些实施例的定位结构，参阅图6所示，在一些实施例中，定位结构100的结构本体形成为一体设置结构，包括设置有多个突出结构112的表面，相邻突出结构112之间形成为截面为四边形的凹槽113，凹槽113的内底面形成为结构本体的底面111。
此外，多个突出结构112远离底面111的表面位于同一平面，每一突出结构112远离底面111的表面形成为一个接触定位面1121，多个远离底面111的接触定位面1121共同形成为用于定位导光板200的一端面的第一定位面接触定位面。
在一些实施例中，每一突出结构112从第一本体110的第一表面1101延伸至与第一表面1101相对的第二表面1102，其中第一表面1101和第二表面1102分别延伸形成每一突出结构112接触定位面的两端面，且在一些实施例中，第二表面1102形成为与背板相贴合的表面，第一表面1101与第二表面1102平行设置。基于该设置结构，突出结构112的延伸方向与背板垂直，与上述图1所示的一些实施例的设置结构和方式相同，因此，突出结构112之间凹槽113的宽度以及接触定位面1121相对于底面111的距离a的具体设置原则与上述图1所示的一些实施例相同，在此不再赘述。
参阅图6所示，在一些实施例中，在第一表面1101的上端且平行于第一表面1101设置有多个台阶面，每一台阶面形成为一个第二定位面130以用于承载一个光学膜片，且每一第二定位面130上开设有凹槽131，该凹槽131形成为用于光学膜片定位的定位配合部，光学膜片上可以对应设置与该凹槽131匹配的突起，从而形成相匹配的定位配合部，以用于光学膜片在第二定位面130上的定位安装。
另外，根据图6，在一些实施例中，所述定位结构包括呈角度设置的两部分，分别用于定位导光板和光学膜片的相邻两个端面。
采用上述设置结构组装背光源时，将定位结构100设置于背板上，且包括多个接触定位面1121的第一定位面垂直于背板，第二定位面130平行于背板，将导光板设置于背板上，且导光板的一端面与第一定位面贴合接触，即完成导光板的定位；将光学膜片平行于导光板设置，并放置于第二定位面130 上，且将光学膜片上的定位配合部与第二定位面130上的定位配合部对位配合，完成光学膜片的定位安装。
本公开的上述一些实施例的所述定位结构中，用于形成第一定位面的结构和用于形成第二定位面的结构，两部分并不相互关联。实际进行背光源的定位结构设计时，当用于形成第一定位面的结构采用上述其中一种结构形式时，形成第二定位面的结构并不限于上述一些实施例中所分别限定的结构。
本公开的一些实施例另一方面还提供一种背光源，该背光源可以包括导光板和光学膜片，并且所述背光源还可以包括如上任一结构的定位结构，其中导光板的一端面与定位结构的第一定位面对位接触，光学膜片的一端面与第二定位面对应配合。
可以理解的是，背光源还可以包括框架、背板和光源等，以上述一些实施例为例，如图3所示，光学膜片设置于框架3所围设形成的空间中，背板400与框架3之间的构件形成为背光源2。
上述结构的背光源2与显示面板1相组合形成为显示模组。
本公开的一些实施例还提供一种显示模组和显示装置，分别包括如上结构的背光源。基于上述关于定位结构的具体描述，本领域技术人员应该能够了解采用本公开所述定位结构的背光源的具体结构，在此不再详细描述。
本公开的一些实施例的所述定位结构、背光源、显示模组和显示装置，通过将用于定位导光板的第一定位面设置为相互分离的多个接触定位面的结构形式，并且用于定位导光板的各个接触定位面之间形成间隔，以增加导光板在模组工作状态时的可伸缩范围，补充由于导光板和光学膜片的热膨胀系数不同导致的导光板与光学膜片之间定位冗余量的差异，从而使得用于导光板和光学膜片的定位结构可以形成为一个结构，整个背光源的结构可以更得简单，解决相关技术导光板和光学膜片采用不同定位结构造成的背光源结构复杂的问题。
以上所述的是本公开的优选实施方式，应当指出对于本技术领域的普通人员来说，在不脱离本公开所述的原理前提下还可以作出若干改进和润饰，这些改进和润饰也在本公开的保护范围内。

Claims (17)

  1. 一种定位结构，应用于具有导光板和光学膜片的背光源，所述定位结构包括结构本体，其中，所述结构本体包括：
    多个相互间隔的突出结构，每一所述突出结构靠近所述导光板的一端形成接触定位面，至少两个位于同一平面的所述接触定位面形成用于定位所述导光板的一端面的第一定位面；
    所述结构本体设置有用于定位所述背光源的光学膜片的一端面的第二定位面，所述第二定位面与所述第一定位面位于不同平面。
  2. 根据权利要求1所述的定位结构，其中，所述结构本体还包括底面，所述接触定位面形成为设置于所述底面上且相对于所述底面突出的突出结构上距离导光板位置最近的表面。
  3. 根据权利要求2所述的定位结构，其中，所述接触定位面到所述底面的距离小于等于所述导光板在模组工作状态时的受热伸缩量，且大于预设数值，其中，所述预设数值为在模组工作状态时，所述导光板的受热伸缩量与所述光学膜片的受热伸缩量的差值。
  4. 根据权利要求2所述的定位结构，其中，每一所述突出结构从所述结构本体的第一表面延伸至与所述第一表面相对的第二表面，其中，所述第一表面和所述第二表面分别延伸形成所述突出结构的两端面。
  5. 根据权利要求4所述的定位结构，其中，相邻所述突出结构之间形成为截面为四边形的凹槽，所述凹槽的内底面形成为所述结构本体的底面。
  6. 根据权利要求4所述的定位结构，其中，所述突出结构的延伸方向平行或垂直于第一方向，其中，所述第一方向为所述第一定位面所定位的所述导光板的一端面的长度方向。
  7. 根据权利要求2所述的定位结构，其中，所述底面平行于所述接触定位面。
  8. 根据权利要求2所述的定位结构，其中，所述突出结构形成为设置于所述底面上的柱体，且所述柱体的延伸方向垂直于所述底面。
  9. 根据权利要求8所述的定位结构，其中，多个形成为柱体的所述突出 结构在所述底面上成行列排列。
  10. 根据权利要求1所述的定位结构，其中，在第二方向上，相邻两个所述接触定位面之间的间隔宽度小于相邻两个所述接触定位面中宽度较大的接触定位面宽度的两倍，且大于相邻两个所述接触定位面中宽度较大接触定位面的宽度的二分之一，其中，所述第二方向为在所述第一定位面所在平面确定的相邻两个所述接触定位面之间最小距离的方向。
  11. 根据权利要求1所述的定位结构，其中，所述第二本体竖直设置于所述第一本体的第三表面上；其中所述接触部设置于所述第一本体上，所述第二定位面设置于所述第二本体上，且所述接触定位面垂直于所述第三表面和所述第二定位面。
  12. 根据权利要求1所述的定位结构，其中，所述第二定位面的数量至少为两个，分别位于不同平面，且每一所述第二定位面均垂直于所述第一定位面。
  13. 根据权利要求12所述的定位结构，其中，至少两个所述第二定位面形成为台阶状。
  14. 根据权利要求13所述的定位结构，其中，所述结构本体包括垂直于所述第一定位面的第四表面，所述第四表面上开设有不同尺寸的凹槽，所述凹槽形成至少两个台阶面，每一所述台阶面分别形成为一个所述第二定位面。
  15. 一种背光源，包括导光板和光学膜片，其中，所述背光源还包括如权利要求1至14任一项所述的定位结构，其中所述导光板的其中一端面与所述第一定位面对位连接，所述光学膜片的其中一端面与所述第二定位面对位连接。
  16. 一种显示模组，包括如权利要求15所述的背光源。
  17. 一种显示装置，包括如权利要求16所述的显示模组。
PCT/CN2018/107215 2017-09-30 2018-09-25 定位结构、背光源、显示模组及显示装置 WO2019062683A1 (zh)

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