WO2017118094A1 - 背光模组和显示装置 - Google Patents

背光模组和显示装置 Download PDF

Info

Publication number
WO2017118094A1
WO2017118094A1 PCT/CN2016/099308 CN2016099308W WO2017118094A1 WO 2017118094 A1 WO2017118094 A1 WO 2017118094A1 CN 2016099308 W CN2016099308 W CN 2016099308W WO 2017118094 A1 WO2017118094 A1 WO 2017118094A1
Authority
WO
WIPO (PCT)
Prior art keywords
backlight module
elastic
light guide
plate
protrusion
Prior art date
Application number
PCT/CN2016/099308
Other languages
English (en)
French (fr)
Inventor
李相稙
Original Assignee
京东方科技集团股份有限公司
北京京东方显示技术有限公司
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, 北京京东方显示技术有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/511,376 priority Critical patent/US10209433B2/en
Publication of WO2017118094A1 publication Critical patent/WO2017118094A1/zh

Links

Images

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
    • 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
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0051—Diffusing sheet or layer
    • 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
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/54—Arrangements for reducing warping-twist

Definitions

  • the present disclosure relates to a backlight module and a display device.
  • the backlight module is one of the key components in the liquid crystal display panel.
  • the backlight module includes a back plate, a reflective sheet disposed on the back plate, a light guide plate, a diffusion layer, and the like.
  • a liquid crystal cell composed of an array substrate, a counter substrate, and a liquid crystal layer interposed between the array substrate and the counter substrate may be disposed on the backlight module.
  • the backlight module can provide the liquid crystal cell with a backlight having sufficient brightness and uniform distribution.
  • the structure of the conventional backlight module includes a structure of a reflective layer 002, a light guide plate 003, a diffusion layer 004, and the like, which are sequentially disposed on the back plate 001.
  • the frame 005 is disposed on the module frame 005, and finally forms a display panel prototype with the assembly frame 007 and the backlight module.
  • a certain gap is left between different components (for example, the light guide plate 003 and the limiting structure 006); in addition, for a light guide plate sensitive to peripheral changes such as temperature and humidity, In order to ensure a certain temperature and humidity reliability, the width of the gap can be set according to the estimated amount of expansion at the time of design.
  • At least one embodiment of the present disclosure relates to a backlight module and a display device, which can alleviate the bending condition of the light guide plate in the backlight module.
  • At least one embodiment of the present disclosure provides a backlight module, including: a light guide plate and a limiting structure, the limiting structure includes: a support plate and an elastic limiting protrusion disposed on the supporting plate, the elastic limit The position protrusion corresponds to a side surface of the light guide plate, and the elastic limit protrusion is configured to elastically deform in a direction perpendicular to the support plate when subjected to pressure on a side surface of the light guide plate.
  • a side surface of the light guide plate is provided with a groove, and the elastic limiting protrusion corresponds to the groove, and the elastic limiting protrusion is received
  • the pressure of the groove is elastically deformed in a direction perpendicular to the support plate.
  • the elastic limit protrusion is received by When the pressure is less than the preset value, the top surface of the elastic limiting protrusion is in contact with the bottom surface of the groove, and the side surface of the light guiding plate is spaced apart from the supporting plate by a first distance; When the pressure received is greater than or equal to a preset value, a top surface of the elastic limiting protrusion is in contact with a bottom surface of the groove, and a side surface of the light guiding plate is at a second distance from the supporting plate, The second distance is less than the first distance.
  • a backlight module further includes: a backplane, the light guide plate is disposed on the backplane, and the limiting structure is disposed at an edge of the backplane, and the light guideboard The sides correspond.
  • the back plate is polygonal, and the limiting structure is disposed on at least one side of the back plate, corresponding to at least one side of the light guide plate. .
  • the support plate is coupled to the back plate, and a fixing member is disposed on the support plate for holding the elastic limiting protrusion and the The backing plate is relatively fixed in a direction perpendicular to the elastic deformation of the elastic limiting projection.
  • the support plate and the back plate are integrated structures.
  • the elastic limiting protrusion includes: a relatively fixed limiting element and an elastic element, and the elastic element and the fixing element are perpendicular to the elastic element The elastic deformation direction is relatively fixed.
  • the elastic element is a spring
  • the limiting element includes a cylinder and a top surface, and the diameter of the top surface is larger than an inner diameter of the spring, the spring Nested in the cylinder.
  • the fixing member is a columnar protrusion
  • an inner diameter of the column is larger than an outer diameter of the columnar protrusion
  • the column is sleeved on the column. Raised.
  • the bottom surface of the column is at a third distance from the supporting plate, and the elastic limit is When the position projection is pressed, the bottom surface of the cylinder is in contact with the support plate.
  • a backlight module further includes: a detachable support member, the columnar protrusion is a hollow structure, and the detachable support member has a diameter smaller than an inner diameter of the columnar protrusion, a cylindrical protrusion for fixing the limiting member such that a bottom surface of the cylinder and the support The plates are separated by a fourth distance.
  • the fourth distance is zero.
  • a fixing groove is disposed on a top surface of an inner wall of the column, and one end of the supporting member is detachable when the detachable supporting member supports the limiting member. Fixed to the fixing groove such that the top surface is at a fifth distance from the bottom surface of the groove.
  • the fifth distance is zero.
  • the detachable supporting member includes a screw, and an inner wall of the columnar protrusion and/or the fixing groove is provided with a thread that cooperates with the screw.
  • the length of the elastic limiting protrusion is smaller than the length of the groove.
  • At least one embodiment of the present disclosure provides a display device including the backlight module of any of the above.
  • the elastic limiting protrusion when the light guide plate vibrates or expands, the elastic limiting protrusion is firstly pressured, and does not directly contact the supporting surface.
  • the function of limiting the position of the light guide plate is ensured, so that the light guide plate does not generate excessive displacement and the white layer is defective in friction with the reflective layer and/or the diffusion layer; on the other hand, the light guide plate is not subjected to displacement when displaced. Excessive resistance of the support plate causes upward or downward bulging resulting in poor elastic deformation.
  • FIG. 1 is a schematic structural view of a backlight module
  • FIG. 2 is a schematic cross-sectional view of a backlight module taken along line AA' of FIG. 1;
  • FIG. 3 is a schematic view showing a bending of a light guide plate
  • FIG. 4 is a schematic structural diagram of a backlight module according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram of an unextruded limit structure of a light guide plate according to an embodiment of the present disclosure
  • FIG. 6 is a schematic diagram of a light guide plate extrusion limit structure according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of a limit structure according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of another limiting structure according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of a detachable support member and an elastic limiting protrusion according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of another non-extrusion limit structure of a light guide plate according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic diagram of another light guide plate extrusion limit structure according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic diagram showing the length of an elastic limiting protrusion and the length of a groove according to an embodiment of the present disclosure.
  • the inventors of the present application found that if the gap between the light guide plate and the limit structure is set to be large (having a large width), if it is affected by vibration after completion of assembly or during subsequent transportation.
  • the light guide plate will generate a large displacement at the gap, thereby causing strong friction with the reflective layer under the light guide plate and the diffusion layer above, causing white spots, thereby affecting the screen display.
  • the gap is set too small (with a small width), in the environment test of the subsequent module and the environmental reliability evaluation process after assembly of the whole machine section, or in the area with high temperature and humidity, it is affected by the surrounding environment.
  • the thermal expansion of the light guide plate may exceed the initial set gap value, resulting in bending deformation of the light guide plate upward or downward; as shown in FIG. 3, the light guide plate 003 is affected by the surrounding environment and generates thermal expansion, thereby bending upward, and finally will be upper.
  • the display substrate generates a thrust to deform the display substrate to affect the image quality.
  • the reflection layer or the like under the light guide plate may be deformed by deformation of the light guide plate to cause reflection defects such as wrinkles.
  • the present disclosure provides a backlight module and a display device.
  • the backlight module comprises: a light guide plate and a limiting structure.
  • the limiting structure comprises: a supporting plate and an elastic limiting protrusion disposed on the supporting plate, the elastic limiting protrusion corresponding to the side of the light guiding plate, and the elastic limiting protrusion can be pressed along the side of the light guiding plate Elastic deformation occurs in a direction perpendicular to the support plate. Therefore, when the light guide plate vibrates or expands, the light guide plate first generates pressure on the elastic limit protrusion without directly contacting the support surface.
  • the function of limiting the position of the light guide plate is ensured, so that the light guide plate does not generate excessive displacement and the white layer is poor in friction with the reflective layer and/or the diffusion layer, and on the other hand, the light guide plate is not supported when displaced. Excessive resistance of the plate causes upward or downward bulging resulting in poor deformation.
  • the embodiment provides a backlight module.
  • the backlight module includes a light guide plate 3 and a limiting structure 10 .
  • the limiting structure 10 includes: a supporting plate 1 and an elastic limiting protrusion 2 disposed on the supporting plate 1 , the elastic limiting protrusion 2 corresponding to the side of the light guiding plate 3 , that is to say, the light guiding plate 3 is on the supporting plate 1
  • the orthographic projection on the upper surface covers the orthographic projection of the elastic limiting protrusion 2 on the supporting plate 1.
  • the elastic limiting protrusion 2 can elastically deform in a direction perpendicular to the supporting plate 1 when subjected to the pressure of the side surface of the light guiding plate 3. .
  • the elastic limiting protrusion 2 can support and limit the light guide plate 3 when the side of the light guide plate 3 moves toward the elastic limiting protrusion 2 and contacts the elastic limiting protrusion 2 .
  • Bit function since the elastic limiting protrusion 2 is elastically deformed when being pressed by the side surface of the light guide plate 3, when the light guide plate vibrates or expands, pressure is applied to the elastic limiting protrusion first, and not directly Contact with the support surface, on the one hand, can ensure the limit function of the light guide plate, so that the light guide plate does not generate excessive displacement and friction with the reflective layer and/or the diffusion layer, and white spots are poor, and on the other hand, the light guide plate is When displaced, there is no excessive resistance to bend upwards or downwards, resulting in poor deformation.
  • the side surface of the light guide plate 3 (the side of the light guide plate near the elastic limiting protrusion) is provided with a groove 31, and the elastic limiting protrusion 2
  • the orthographic projection of the groove 31 on the support plate 1 covers the orthographic projection of the elastic limiting protrusion 2 on the support plate 1, and the elastic limiting protrusion 2 can be associated with the groove 31.
  • the bottom surface is in contact.
  • the elastic limiting projection 2 is elastically deformed in a direction perpendicular to the support plate 1 when subjected to the pressure of the groove 31.
  • the top surface of the elastic limiting protrusion 2 is in contact with the bottom surface of the groove 31, and the side surface of the light guiding plate 3 and the supporting plate 1 is separated by a first distance D1.
  • the elastic limiting protrusion 2 has elasticity, when the pressure of the light guiding plate 3 against the elastic limiting protrusion 2 is small (for example, when vibrating), the top surface of the elastic limiting protrusion 2 is opposite to the bottom surface of the groove 31. In contact, the side of the light guide plate 3 is spaced apart from the support plate 1 by a first distance D1. In this case, the elastic limit of the elastic limiting protrusion 2 is small, and the light guide plate 3 can be limited to ensure that the light guide plate does not have a large displacement.
  • the top surface of the elastic limiting protrusion 2 is in contact with the bottom surface of the groove 31, and the side surface of the light guide plate 3 is
  • the support plate 1 is apart from the second distance D2, and the second distance D2 is smaller than the first distance D1.
  • the elastic limiting protrusion 2 when the pressure of the optical limiting plate 2 on the elastic limiting protrusion 2 is large (for example, when expanding), the elastic limiting protrusion 2 generates a large elastic elastic deformation, and the elastic limiting protrusion 2
  • the top surface of the light guide plate 3 is in contact with the bottom surface of the groove 31, and the side surface of the light guide plate 3 is at a second distance from the support plate 1.
  • the light guide plate 3 can press the elastic limiting protrusion 2 when expanding, and does not press the support plate 1 to ensure that the light guide plate 3 does not directly contact the support plate 1 when inflated, and is subjected to excessive resistance. Produces bending or bulging upwards or downwards.
  • the bottom surface of the elastic limiting protrusion 2 maintains a certain distance from the support plate 1, that is, the third distance D3, if the elastic limit protrusion 2 has a small elastic potential energy, and the bottom surface of the elastic limiting protrusion 2 can also be combined with the support plate 1 Contact (ie the third distance is 0).
  • the present embodiment provides a backlight module.
  • the backlight module further includes a back plate 5 , and the light guide plate 3 is disposed on the back plate 5 , and the limiting structure 10 is disposed on The edge of the back plate 5 corresponds to the side of the light guide plate 3.
  • the light guide plate provided on the back plate 5 can be restricted by disposing the stopper structure 10 on the back plate 5.
  • the backplane in the backlight module provided in this embodiment may be a general rectangular shape, and may be applied to an electronic product such as a television or a computer. Other shapes such as round and oval can be applied to wearable devices such as watches and bracelets.
  • the backlight module provided in this embodiment when applied to a wearable device such as a wristwatch or a wristband, the wearable environment of the wearable device such as a wristwatch or a wristband is complicated, and the vibration is often used.
  • the backlight module can greatly improve its stability and reliability.
  • the limiting structure 10 is disposed on at least one side of the backing plate 5 (in the case where the backing plate is polygonal), corresponding to at least one side of the light guiding plate 3.
  • the limiting structure may be disposed only on two wide sides of the back plate (when the back plate is rectangular, the wide side is the side perpendicular to the longer sides of the back plate), Since the thermal expansion of the longer side of the backboard is large, the limiting structure is disposed on the wide side perpendicular to the longer sides of the backboard, which can effectively limit the light guide plate and reduce the use of the limit structure, thereby saving cost.
  • the disclosure includes but is not limited to, and a limit structure may be disposed on the four sides of the backboard.
  • the support plate 1 is connected to the back plate 5, and the support plate 1 is provided with a fixing member 11 for holding the elastic limiting protrusion 2 It is relatively fixed to the back plate 5 in a direction perpendicular to the elastic deformation of the elastic limiting protrusions 2. Therefore, the embodiment can ensure that the elastic limiting protrusion and the back plate are relatively fixed, so that the displacement of the light guide plate is not caused by the displacement of the light guide plate, and the light guide plate cannot be well limited in the subsequent process.
  • the backing plate 5 and the supporting plate 1 may be of a unitary structure. Thereby, the stability of the support plate can be increased.
  • a fixing member 11 is provided on the support plate 1 for holding the elastic limiting projection 2 and the supporting plate 1 relatively fixed in a direction perpendicular to the elastic deformation of the elastic limiting projection 2.
  • the elastic limiting protrusion 2 includes: a relatively fixed limiting element 21 and an elastic element 22, and the elastic element 22 and the fixing element 11 It is relatively fixed in a direction perpendicular to the elastic deformation of the elastic member 22.
  • the above relative fixing means that the limiting element and the elastic element are fixed in one or some reverse directions, and are movable in some or some reverse directions.
  • the limiting member and the elastic member are relatively movable in the direction in which the elastic member is elastically deformed, and are fixed in a direction perpendicular to the elastic deformation of the elastic member.
  • the limiting elastic member is formed by the limiting member and the elastic member, and the structure is simple and easy to set. And the elastic deformation is realized by the two-part structure, and the redundancy can be provided to provide a larger elastic deformation space.
  • the present disclosure includes but is not limited thereto, and the elastic limiting protrusion may also be a unitary structure made of a material having elasticity.
  • the elastic member 22 is a spring.
  • other structures may be selected as the elastic member as needed, such as an elastic resin or a rubber, and a sponge, a foam or the like may be used.
  • the limiting member 21 includes a cylinder 211 and a top surface 212.
  • the diameter of the top surface 212 is larger than the inner diameter of the elastic member 22 (for example, a spring), and the elastic member 22 (for example, a spring) is sleeved on the cylinder 211. .
  • the limiting member when the limiting member is pressed, it can still be relatively fixed with the spring, thereby fully utilizing the elastic deformation space of the spring perpendicular to the supporting plate.
  • the fixing member 11 is a columnar projection
  • the inner diameter of the cylinder 211 is larger than the outer diameter of the columnar projection
  • the cylinder 211 is sleeved on the columnar projection. Therefore, the embodiment can keep the limiting component and the fixing component relatively fixed, thereby maintaining the limiting component and the spring and the supporting plate relatively fixed, so that the limiting component and the spring are not displaced by the light guide plate, resulting in displacement.
  • the light guide plate cannot be well limited in the subsequent process.
  • the bottom surface of the cylinder 211 is at a third distance D3 from the supporting plate 1, when the elastic limiting protrusion 2 is pressed, and the pressure is applied.
  • the bottom surface of the cylinder 211 is in contact with the support plate 1 (ie, the third distance D3 is zero).
  • the bottom surface of the cylinder when the elastic limiting protrusion is not pressed, the bottom surface of the cylinder is spaced apart from the supporting plate by a third distance, so that the elastic limiting protrusion 2 can provide a certain elastic deformation space, thereby providing a certain light guide plate.
  • Move the gap for assembly When the elastic limiting protrusion is pressed by the light guide plate, the bottom surface of the cylinder is in contact with the supporting plate, so that the light guiding plate does not undergo further displacement, and the diffusion layer of the light guiding plate and the upper layer thereof are avoided. / The reflection layer underneath it is rubbed to produce a white spot causing a defect.
  • the embodiment provides a backlight module.
  • the backlight module further includes: a detachable supporting member 4 , the columnar protrusion is a hollow structure, and the detachable supporting component The diameter of 4 is smaller than the inner diameter of the columnar projection, and is used to fix the stopper member 21 when the columnar projection is inserted, so that the bottom surface of the cylinder 211 is at a fourth distance D4 from the support plate 1.
  • a fixing groove 213 is disposed on the top surface of the inner wall of the column 211, and the columnar protrusion is inserted into the detachable supporting member 4 and supported.
  • the limiting member 21 is restrained, one end of the detachable supporting member 4 is fixed to the fixing groove 213 such that the top surface 212 is spaced apart from the bottom surface of the groove 31 by a fifth distance D5.
  • This embodiment can ensure that the detachable support member does not move when the support member is supported, thereby preventing the light guide plate from being displaced due to vibration during assembly.
  • the distance from the upper surface of the groove to the bottom surface of the cylinder is equal to the height of the columnar protrusion.
  • the detachable supporting member in this embodiment can insert the columnar protrusion and the fixing groove during the assembly process of the backlight module.
  • the detachable supporting member 4 is a screw, and the screw can be disposed in the fixing groove 213.
  • the mating threads enable the support limiting member 21 to exert a certain pressure on the spring when the screw is inserted into the fixing groove 213, and the spring is in a compressed state, thereby forming a width between the top surface 212 of the supporting limiting member 21 and the light guide plate 3.
  • the gap of the fifth distance provides a certain movable space for the light guide plate during the assembly process of the backlight module.
  • the fourth distance D4 may be zero or the fifth distance D5 is zero to provide a certain movable space for the light guide plate during the assembly of the backlight module.
  • the detachable supporting member can be pulled out, and the spring is not subjected to the pressure of the supporting limiting member, thereby exerting the limit function of the elastic limiting protrusion (as shown in FIG. 10, the elastic limiting protrusion on the light guiding plate 3)
  • the pressure of 2 is small, the top surface of the elastic limiting protrusion 2 is in contact with the bottom surface of the groove 31, which can limit the position of the light guide plate 3, and ensure that the light guide plate 3 does not have a large displacement) and guide
  • the expansion of the light plate provides a space function (as shown in FIG.
  • the elastic limit protrusion 2 when the pressure of the light guide plate 3 on the elastic limit protrusion 2 is large, the elastic limit protrusion 2 generates a large elastic elastic deformation, and the elastic limit protrusion
  • the top surface of the second surface is in contact with the bottom surface of the recess 31 to ensure that the light guide plate 3 does not directly contact the support plate 1 when inflated, and is excessively resisted to be raised or bent upward or downward.
  • the detachable support member includes a screw disposed on the inner wall of the cylindrical projection and/or the fixing groove The thread matches the thread. The detachable support member does not easily fall off when supporting the stop member.
  • the length L1 of the elastic limiting protrusion 2 is smaller than the length L2 of the groove. It can be ensured that the elastic limiting element provides a certain expansion space for the light guide plate in a direction perpendicular to the spring elasticity.
  • the present disclosure also provides a display device including the above backlight module.
  • the display device in this embodiment may be any product or component having a display function, such as an electronic paper, a mobile phone, a tablet computer, a television, a notebook computer, a digital photo frame, a navigator, and the like.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)

Abstract

一种背光模组和显示装置，该背光模组包括导光板（3）和限位结构（10），限位结构（10）包括：支撑板（1）和设置在支撑板（1）上的弹性限位凸起（2），弹性限位凸起（2）与导光板（3）的侧面相对应，弹性限位凸起（2）在受到导光板（3）的侧面的压力时，沿着垂直于支撑板（1）的方向产生弹性形变。该背光模组可一方面保证了对导光板（3）的限位功能，使得导光板（3）不会产生过大位移而与反射层和/或扩散层产生摩擦出现白点不良，另一方面在导光板（3）在位移时不会受到支撑板（1）过大的阻力产生向上或向下凸起或弯曲而导致形变不良。

Description

背光模组和显示装置 技术领域
本公开涉及一种背光模组以及一种显示装置。
背景技术
背光模组是液晶显示面板中关键的组件之一。通常，背光模组包括背板、设置在背板上的反射片、导光板、扩散层等。背光模组上可设置由阵列基板、对置基板以及夹设在阵列基板和对置基板之间的液晶层组成的液晶盒。由此，背光模组可为该液晶盒提供具有充足亮度和均匀分布的背光。
如图1和图2所示，通常的背光模组的结构包括在背板001上依次设置的反射层002、导光板003、扩散层004等结构；在背光模组之上还设置有模组框架005；显示面板009设置在模组框架005之上，最后与组装边框007以及背光模组构成显示面板雏形。在此结构中，为了方便相关部件的组装，会在不同的部件之间(例如导光板003与限位结构006)留有一定的间隙；另外，对于对温度湿度等周边变化敏感的导光板，为了确保一定的温湿度信赖性，在设计时可以根据预估的膨胀量来设定该间隙的宽度。
发明内容
本公开至少一实施例涉及一种背光模组以及显示装置，可缓解导光板在背光模组的弯折情况。
本公开至少一实施例提供一种背光模组，包括：导光板以及限位结构，所述限位结构包括：支撑板和设置在所述支撑板上的弹性限位凸起，所述弹性限位凸起与所述导光板的侧面相对应，所述弹性限位凸起被配置为在受到所述导光板的侧面的压力时，沿着垂直于所述支撑板的方向产生弹性形变。
例如，在本公开一实施例提供的背光模组中，所述导光板的侧面设置有凹槽，所述弹性限位凸起与所述凹槽相对应，所述弹性限位凸起在受到所述凹槽的压力时，沿着垂直于所述支撑板的方向产生弹性形变。
例如，在本公开一实施例提供的背光模组中，在所述弹性限位凸起受到的 压力小于预设值时，所述弹性限位凸起的顶面与所述凹槽的底面相接触，所述导光板的侧面与所述支撑板相距第一距离；在所述弹性限位凸起受到的压力大于或等于预设值时，所述弹性限位凸起的顶面与所述凹槽的底面相接触，所述导光板的侧面与所述支撑板相距第二距离，所述第二距离小于第一距离。
例如，本公开一实施例提供的背光模组中还包括：背板，所述导光板设置在所述背板上，所述限位结构设置在所述背板的边缘，与所述导光板的侧面相对应。
例如，在本公开一实施例提供的背光模组中，所述背板为多边形，所述限位结构设置在所述背板的至少一条边上，与所述导光板的至少一个侧面相对应。
例如，在本公开一实施例提供的背光模组中，所述支撑板连接于所述背板，在所述支撑板上设置有固定元件，用于保持所述弹性限位凸起与所述背板在垂直于所述弹性限位凸起弹性形变的方向上相对固定。
例如，在本公开一实施例提供的背光模组中，所述支撑板和所述背板为一体结构。
例如，在本公开一实施例提供的背光模组中，所述弹性限位凸起包括：相对固定的限位元件和弹性元件，所述弹性元件与所述固定元件在垂直于所述弹性元件的弹性形变方向上相对固定。
例如，在本公开一实施例提供的背光模组中，所述弹性元件为弹簧，所述限位元件包括柱体和顶面，所述顶面的直径大于所述弹簧的内径，所述弹簧套设于所述柱体。
例如，在本公开一实施例提供的背光模组中，所述固定元件为柱状凸起，所述柱体的内径大于所述柱状凸起的外径，所述柱体套设于所述柱状凸起。
例如，在本公开一实施例提供的背光模组中，在所述弹性限位凸起未受到挤压时，所述柱体的底面与所述支撑板相距第三距离，在所述弹性限位凸起受到挤压时，所述柱体的底面与所述支撑板相接触。
例如，本公开一实施例提供的背光模组还包括：可拆卸支撑元件，所述柱状凸起为中空结构，所述可拆卸支撑元件的直径小于所述柱状凸起的内径，在插入所述柱状凸起时，用于固定所述限位元件，使所述柱体的底面与所述支撑 板相距第四距离。
例如，在本公开一实施例提供的背光模组中，所述第四距离为零。
例如，在本公开一实施例提供的背光模组中，在所述柱体的内壁顶面设置有固定槽，在所述可拆卸支撑元件支撑所述限位元件时，可拆卸支撑元件的一端固定于所述固定槽，以使所述顶面与所述凹槽的底面相距第五距离。
例如，在本公开一实施例提供的背光模组中，所述第五距离为零。
例如，在本公开一实施例提供的背光模组中，所述可拆卸支撑元件包括螺丝，在所述柱状凸起的内壁和/或所述固定槽设置有与所述螺丝相配合的螺纹。
例如，在本公开一实施例提供的背光模组中，所述弹性限位凸起的长度小于所述凹槽的长度。
本公开至少一实施例提供一种显示装置，包括上述任一项所述的背光模组。
通过上述技术方案，可以使得导光板在振动或者膨胀时，会先对弹性限位凸起产生压力，而不会直接与支撑面接触。这一方面保证了对导光板的限位功能，使得导光板不会产生过大位移而与反射层和/或扩散层产生摩擦出现白点不良；另一方面使得导光板在位移时不会受到支撑板过大的阻力产生向上或向下凸起而导致弹性形变不良。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简要介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域的普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为一种背光模组的结构示意图；
图2为一种背光模组沿图1中AA’的截面示意图；
图3为一种导光板的弯曲示意图；
图4为本公开一实施例提供的一种背光模组的结构示意图；
图5为本公开一实施例提供的一种导光板未挤压限位结构的示意图；
图6为本公开一实施例提供的一种导光板挤压限位结构的示意图；
图7为本公开一实施例提供的一种限位结构的示意图；
图8为本公开一实施例提供的另一种限位结构的示意图；
图9为本公开一实施例提供的一种可拆卸支撑元件与弹性限位凸起的示意图；
图10为本公开一实施例提供的另一种导光板未挤压限位结构的示意图；
图11为本公开一实施例提供另一种导光板挤压限位结构的示意图；以及
图12为本公开一实施例提供的一种弹性限位凸起的长度与凹槽的长度的示意图。
附图标号说明：
001-背板；002-反射层；003-导光板；004-扩散层；005-模组框架；006-限位结构；007-组装边框；009-显示面板；10-限位结构；1-支撑板；11-固定元件；2-弹性限位凸起；21-限位元件；211-柱体；212-顶面；213-固定槽；22-弹性元件；3-导光板；31-凹槽；4-可拆卸支撑元件；5-背板；6-反射层；7-扩散板。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例的附图，对本公开实施例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的一部分实施例，而不是全部的实施例。基于所描述的本公开的实施例，本领域普通技术人员在无需创造性劳动的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。另外，附图中各膜层的厚度和形状不反映真实比例，目的只是示意说明本发明内容。
除非另外定义，本公开使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。
在研究中，本申请的发明人发现如果导光板与限位结构之间的间隙设定的较大(具有较大的宽度)，那么在完成组装后或在后续运输过程中，若受到震动影响，导光板会在间隙处产生较大的位移，从而与导光板之下的反射层和之上的扩散层产生较强的摩擦引起白点不良，从而影响画面显示。如果将间隙设定的过小(具有较小的宽度)，在后续模组的环境测试及整机段组装后环境信赖性评价过程中，或在温度湿度较高的区域，受到周围环境影响的导光板的热膨胀可能超出初期设定的间隙值，导致导光板向上或向下产生弯曲变形；如图3所示，导光板003受到周围环境影响并产生热膨胀，从而向上弯曲，最终会对上方的显示基板产生推力使显示基板变形进而影响画质。另外，导光板下方的反射层等也会由于导光板的变形产生变形导致出现褶皱等反射不良。
本公开提供一种背光模组以及显示装置。该背光模组包括：导光板以及限位结构。限位结构包括：支撑板和设置在支撑板上的弹性限位凸起，弹性限位凸起与导光板的侧面相对应，弹性限位凸起可在受到导光板的侧面的压力时，沿着垂直于所述支撑板的方向产生弹性形变。由此，在导光板在振动或者膨胀时，导光板先对弹性限位凸起产生压力，而不会直接与支撑面接触。一方面保证了对导光板的限位功能，使得导光板不会产生过大位移而与反射层和/或扩散层产生摩擦出现白点不良，另一方面使得导光板在位移时不会受到支撑板过大的阻力产生向上或向下凸起而导致形变不良。
下面结合附图对本公开提供的背光模组以及显示装置进行说明。
实施例一
本实施例提供一种背光模组，如图4所示，该背光模组包括导光板3以及限位结构10。限位结构10包括：支撑板1和设置在支撑板1上的弹性限位凸起2，弹性限位凸起2与导光板3的侧面相对应，也就是说，导光板3在支撑板1上的正投影覆盖弹性限位凸起2在支撑板1上的正投影，弹性限位凸起2可在受到导光板3的侧面的压力时，沿着垂直于支撑板1的方向产生弹性形变。
在本实施例提供的背光模组中，弹性限位凸起2可在导光板3的侧面向弹性限位凸起2移动并接触弹性限位凸起2时对导光板3起到支撑和限位功能。并且由于弹性限位凸起2在在受到导光板3的侧面的压力时产生的是弹性形变，当导光板在振动或者膨胀时，会先对弹性限位凸起产生压力，而不会直接 与支撑面接触，一方面可保证了对导光板的限位功能，使得导光板不会产生过大位移而与反射层和/或扩散层产生摩擦出现白点不良，另一方面使得导光板在位移时不会受到过大的阻力产生向上或向下的弯曲从而导致形变不良。
例如，在本实施例一示例提供的背光模组中，如图5所示，导光板3的侧面(导光板靠近弹性限位凸起的侧面)设置有凹槽31，弹性限位凸起2与凹槽31相对应，也就是说，凹槽31在支撑板1上的正投影覆盖弹性限位凸起2在支撑板1上的正投影，弹性限位凸起2可与凹槽31的底面接触。弹性限位凸起2在受到凹槽31的压力时，沿着垂直于支撑板1的方向产生弹性形变。由此，当弹性限位凸起2在受到凹槽31的压力时，沿着垂直于支撑板1的方向产生弹性形变，由于弹性限位凸起2可设置在凹槽31中，从而减少对背光模组长度和/或宽度的占用。
例如，如图5所示，在弹性限位凸起2受到的压力小于预设值时，弹性限位凸起2的顶面与凹槽31的底面相接触，导光板3的侧面与支撑板1相距第一距离D1。此时，由于弹性限位凸起2具有弹性，在导光板3对弹性限位凸起2的压力较小时(例如振动时)，弹性限位凸起2的顶面与凹槽31的底面相接触，导光板3的侧面与支撑板1相距第一距离D1。这种情况下弹性限位凸起2的弹性形变量较小，可以对导光板3起到限位作用，保证导光板不会发生较大的位移。
例如，如图6所示，在弹性限位凸起2受到的压力大于或等于预设值时，弹性限位凸起2的顶面与凹槽31的底面相接触，导光板3的侧面与支撑板1相距第二距离D2，第二距离D2小于第一距离D1。
例如，如图6所示，在导光板3对弹性限位凸起2的压力较大时(例如膨胀时)，弹性限位凸起2产生较大的弹性弹性形变，弹性限位凸起2的顶面与凹槽31的底面相接触，导光板3的侧面与支撑板1相距第二距离。这种情况下导光板3在膨胀时可以挤压弹性限位凸起2，并且不会挤压支撑板1，保证导光板3在膨胀时不会与支撑板1直接接触而受到过大的阻力产生向上或向下弯曲或凸起。在这种情况下，若弹性限位凸起2具有的弹性势能较大，那么弹性限位凸起2的底面与支撑板1保持一定的距离，即第三距离D3，若弹性限位凸起2具有的弹性势能较小，那么弹性限位凸起2的底面与支撑板1也可相 接触(也即第三距离为0)。
实施例二
在实施例一的基础上，本实施例提供一种背光模组，如图4所示，该背光模组还包括背板5，导光板3设置在背板5上，限位结构10设置在背板5的边缘，与导光板3的侧面相对应。由此，可通过将限位结构10设置在背板5上来对设置在背板5上的导光板进行限位。需要说明的是，本实施例提供的背光模组中的背板可为通常的矩形，可应用于电视、电脑等电子产品；当然，本实施例提供的背光模组中的背板也可为圆形、椭圆形等其他形状，可应用于手表、手环等可穿戴设备上。并且，当本实施例提供的背光模组应用于手表、手环等可穿戴设备时，由于手表、手环等可穿戴设备的使用环境较为复杂，受到振动的情况较多，本实施例提供的背光模组可大大提高其稳定性和可靠性。
例如，在本实施例一示例提供的背光模组中，限位结构10设置在背板5的至少一条边上(背板为多边形的情况)，与导光板3的至少一个侧面相对应。
例如，为了便于对导光板进行限位，限位结构可以仅设置在背板的两条宽边(当背板为矩形时，宽边为与背板的较长的两边垂直的边)上，由于背板较长的边产生的热膨胀较大，在与背板较长的两边垂直的宽边上设置限位结构可有效地对导光板进行限位，并可减少限位结构的使用，节省成本。当然，本公开包括但不限于此，也可以在背板的四条边上均设置限位结构。
例如，在本实施例一示例提供的背光模组中，如图4所示，支撑板1连接于背板5，在支撑板1上设置有固定元件11，用于保持弹性限位凸起2与背板5在垂直于弹性限位凸起2弹性形变的方向上相对固定。由此，本实施例可以保证弹性限位凸起与背板相对固定，从而不会在受到导光板挤压产生位移，可避免导致后续过程中无法良好地对导光板进行限位。
例如，如图4所示，背板5和支撑板1可为一体结构。由此，可增加支撑板的稳定性。
例如，如图5所示，在支撑板1上设置有固定元件11，用于保持弹性限位凸起2与支撑板1在垂直于弹性限位凸起2弹性形变的方向上相对固定。
例如，在本实施例一示例提供的背光模组中，如图7所示，弹性限位凸起2包括：相对固定的限位元件21和弹性元件22，弹性元件22与固定元件11 在垂直于弹性元件22弹性形变的方向上相对固定。需要说明的是，上述的相对固定是指限位元件和弹性元件在某个或某些反向上固定，在某个或某些反向上可移动。例如，限位元件与弹性元件在弹性元件弹性形变的方向上可相对移动，在在垂直于弹性元件弹性形变的方向上固定。由此，通过限位元件和弹性元件构成结弹性限位凸起，结构简单，易于设置。并且通过两部分结构来实现弹性形变，可以具有较大的冗余度，以便提供更大的弹性形变空间。当然，本公开包括但不限于此，弹性限位凸起也可为一体结构，采用具有弹性的材料制成。
例如，如图7所示，弹性元件22为弹簧，当然，也可以根据需要选择其他结构作为弹性元件，例如弹性树脂、橡胶，也可以选用海绵、泡沫等材料。
例如，如图7所示，限位元件21包括柱体211和顶面212，顶面212的直径大于弹性元件22(例如弹簧)的内径，弹性元件22(例如弹簧)套设于柱体211。
在本实施例提供的背光模组中，在限位元件在受到挤压时，仍能与弹簧保持相对固定，从而充分利用弹簧垂直于支撑板的弹性形变空间。
例如，如图7所示，固定元件11为柱状凸起，柱体211的内径大于柱状凸起的外径，柱体211套设于柱状凸起。由此，本实施例可以保持限位元件与固定元件相对固定，进而保持限位元件和弹簧与支撑板相对固定，从而使得限位元件和弹簧不会因受到导光板挤压而产生位移，导致后续过程中无法良好的对导光板进行限位。
例如，如图5所示，在弹性限位凸起2未受到挤压时，柱体211的底面与支撑板1相距第三距离D3，在弹性限位凸起2受到挤压时，并且压力较大时，柱体211的底面与支撑板1相接触(即第三距离D3为零)。
本实施在弹性限位凸起未受到挤压时，使得柱体的底面与支撑板相距第三距离，因此可以为弹性限位凸起2提供一定的弹性形变空间，从而为导光板提供一定的移动间隙，以便进行组装。在弹性限位凸起受到导光板挤压时，由于的柱体的底面与支撑板相接触，使得导光板不会发生进一步位移，避免了导光板因发生较大位移而与其上的扩散层和/或其下的反射层发生摩擦产生白点引起不良。
实施例三
在实施例一的基础上，本实施例提供一种背光模组，如图8至图11所示，背光模组还包括：可拆卸支撑元件4，柱状凸起为中空结构，可拆卸支撑元件4的直径小于柱状凸起的内径，在插入柱状凸起时，用于固定限位元件21，使柱体211的底面与支撑板1相距第四距离D4。
例如，在本实施例一示例供的背光模组中，如图8至图10所示，在柱体211的内壁顶面设置有固定槽213，在可拆卸支撑元件4插入柱状凸起并支撑限位元件21时，可拆卸支撑元件4的一端固定于固定槽213，以使顶面212与凹槽31的底面相距第五距离D5。
本实施例可以保证可拆卸支撑元件在支撑限位元件时，限位元件不会发生移动，从而避免在组装过程中导光板因振动而发生位移。其中，凹槽的上表面到柱体底面的距离等于柱状凸起的高度。
本实施例中的可拆卸支撑元件可以在背光模组组装过程中插入柱状凸起和固定槽，如图9所示，例如可拆卸支撑元件4为螺丝，在固定槽213中可以设置与该螺丝相配合的螺纹，使得螺丝插入固定槽213时，能够使得支撑限位元件21对弹簧产生一定压力，弹簧处于压缩状态，从而在支撑限位元件21的顶面212与导光板3之间形成宽度为第五距离的间隙，以在背光模组组装过程中为导光板提供一定的可活动空间。
例如，可使第四距离D4为零或第五距离D5为零来在背光模组组装过程中为导光板提供一定的可活动空间。
在完成组装后可以将可拆卸支撑元件抽出，弹簧不受到支撑限位元件的压力，从而发挥弹性限位凸起的限位功能(如图10所示，在导光板3对弹性限位凸起2的压力较小时，弹性限位凸起2的顶面与凹槽31的底面相接触，可以对导光板3起到限位作用，保证导光板3不会发生较大的位移)和为导光板的膨胀提供空间的功能(如图11所示，在导光板3对弹性限位凸起2的压力较大时，弹性限位凸起2产生较大的弹性弹性形变，弹性限位凸起2的顶面与凹槽31的底面相接触，可以保证导光板3在膨胀时不会与支撑板1直接就接触而受到过大的阻力产生向上或向下凸起或弯曲)。
例如，可拆卸支撑元件包括螺丝，在柱状凸起的内壁和/或固定槽设置有与 螺丝相配合的螺纹。可以可拆卸支撑元件在支撑限位元件时不会轻易脱落。
例如，在本实施例一示例提供的背光模组中，如图12所示，例如，弹性限位凸起2的长度L1小于凹槽的长度L2。可以保证弹性限位元件在垂直于弹簧弹性方向上为导光板提供一定的膨胀空间。
实施例四
本公开还提出了一种显示装置，包括上述背光模组。
需要说明的是，本实施例中的显示装置可以为：电子纸、手机、平板电脑、电视机、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。
以上结合附图详细说明了本公开的技术方案，考虑到现有技术中，导光板在受热膨胀时，容易弯折变形导致显示不良。通过本公开的技术方案，可以使得导光板在振动或者膨胀时，会先对弹性限位凸起产生压力，而不会直接与支撑面接触。这一方面保证了对导光板的限位功能，使得导光板不会产生过大位移而与反射层和/或扩散层产生摩擦出现白点不良；另一方面使得导光板在位移时不会受到支撑板过大的阻力产生向上或向下凸起弯曲而导致弹性形变不良。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应该以权利要求的保护范围为准。
本申请要求于2016年01月05日递交的中国专利申请第201610006894.4号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。

Claims (18)

  1. 一种背光模组，包括：
    导光板以及限位结构，
    其中，所述限位结构包括：支撑板和设置在所述支撑板上的弹性限位凸起，所述弹性限位凸起与所述导光板的侧面相对应，所述弹性限位凸起被配置为在受到所述导光板的侧面的压力时，沿着垂直于所述支撑板的方向产生弹性形变。
  2. 根据权利要求1所述的背光模组，其中，所述导光板的侧面设置有凹槽，所述弹性限位凸起与所述凹槽相对应，所述弹性限位凸起在受到所述凹槽的压力时，沿着垂直于所述支撑板的方向产生弹性形变。
  3. 根据权利要求2所述的背光模组，其中，在所述弹性限位凸起受到的压力小于预设值时，所述弹性限位凸起的顶面与所述凹槽的底面相接触，所述导光板的侧面与所述支撑板相距第一距离；
    在所述弹性限位凸起受到的压力大于或等于预设值时，所述弹性限位凸起的顶面与所述凹槽的底面相接触，所述导光板的侧面与所述支撑板相距第二距离，所述第二距离小于第一距离。
  4. 根据权利要求3所述的背光模组，还包括：
    背板，其中，所述导光板设置在所述背板上，所述限位结构设置在所述背板的边缘，与所述导光板的侧面相对应。
  5. 根据权利要求4所述的背光模组，其中，所述背板为多边形，所述限位结构设置在所述背板的至少一条边上，与所述导光板的至少一个侧面相对应。
  6. 根据权利要求5所述的背光模组，其中，所述支撑板连接于所述背板，在所述支撑板上设置有固定元件，用于保持所述弹性限位凸起与所述背板在垂直于所述弹性限位凸起弹性形变的方向上相对固定。
  7. 根据权利要求6所述的背光模组，其中，所述支撑板和所述背板为一体结构。
  8. 根据权利要求6所述的背光模组，其中，所述弹性限位凸起包括：相对固定的限位元件和弹性元件，所述弹性元件与所述固定元件在垂直于所述弹性 元件的弹性形变方向上相对固定。
  9. 根据权利要求8所述的背光模组，其中，所述弹性元件为弹簧，所述限位元件包括柱体和顶面，所述顶面的直径大于所述弹簧的内径，所述弹簧套设于所述柱体。
  10. 根据权利要求9所述的背光模组，其中，所述固定元件为柱状凸起，所述柱体的内径大于所述柱状凸起的外径，所述柱体套设于所述柱状凸起。
  11. 根据权利要求10所述的背光模组，其中，在所述弹性限位凸起未受到挤压时，所述柱体的底面与所述支撑板相距第三距离，在所述弹性限位凸起受到挤压时，所述柱体的底面与所述支撑板相接触。
  12. 根据权利要求10或11所述的背光模组，还包括：
    可拆卸支撑元件，
    其中，所述柱状凸起为中空结构，所述可拆卸支撑元件的直径小于所述柱状凸起的内径，在插入所述柱状凸起时，用于固定所述限位元件，使所述柱体的底面与所述支撑板相距第四距离。
  13. 根据权利要求12所述的背光模组，其中，所述第四距离为零。
  14. 根据权利要求12或13所述的背光模组，其中，在所述柱体的内壁顶面设置有固定槽，在所述可拆卸支撑元件支撑所述限位元件时，可拆卸支撑元件的一端固定于所述固定槽，以使所述顶面与所述凹槽的底面相距第五距离。
  15. 根据权利要求14所述的背光模组，其中，所述第五距离为零。
  16. 根据权利要求14或15所述的背光模组，其中，所述可拆卸支撑元件包括螺丝，在所述柱状凸起的内壁和/或所述固定槽设置有与所述螺丝相配合的螺纹。
  17. 根据权利要求1至16中任一项所述的背光模组，其中，所述弹性限位凸起的长度小于所述凹槽的长度。
  18. 一种显示装置，其中，包括权利要求1至17中任一项所述的背光模组。
PCT/CN2016/099308 2016-01-05 2016-09-19 背光模组和显示装置 WO2017118094A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15/511,376 US10209433B2 (en) 2016-01-05 2016-09-19 Backlight module and display device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610006894.4 2016-01-05
CN201610006894.4A CN105674145A (zh) 2016-01-05 2016-01-05 背光模组和显示装置

Publications (1)

Publication Number Publication Date
WO2017118094A1 true WO2017118094A1 (zh) 2017-07-13

Family

ID=56299086

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/099308 WO2017118094A1 (zh) 2016-01-05 2016-09-19 背光模组和显示装置

Country Status (3)

Country Link
US (1) US10209433B2 (zh)
CN (1) CN105674145A (zh)
WO (1) WO2017118094A1 (zh)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105674145A (zh) * 2016-01-05 2016-06-15 京东方科技集团股份有限公司 背光模组和显示装置
CN205678520U (zh) 2016-06-21 2016-11-09 北京京东方光电科技有限公司 一种背光模组及显示装置
JP2018116221A (ja) * 2017-01-20 2018-07-26 株式会社ジャパンディスプレイ 液晶表示装置
CN206594333U (zh) 2017-03-22 2017-10-27 京东方科技集团股份有限公司 用于固定导光板的弹性固定件、对应的背板以及包括两者的液晶显示装置
EP3605210B1 (en) * 2017-03-31 2022-02-23 Panasonic Intellectual Property Management Co., Ltd. Image display apparatus
CN208596272U (zh) * 2018-08-27 2019-03-12 北京京东方茶谷电子有限公司 背光模组及显示装置
CN109975916B (zh) * 2019-03-19 2024-08-16 惠州市宝明精工有限公司 一种改进导光板固定结构的背光模组
CN112346168A (zh) * 2019-08-09 2021-02-09 瑞仪光电(南京)有限公司 限位装置、背光模组及显示装置
DE102020216016B3 (de) * 2020-09-01 2022-01-27 Continental Automotive Gmbh Beleuchtungseinheit mit einer Zentriereinrichtung für einen Lichtleiter

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120182482A1 (en) * 2008-11-27 2012-07-19 Samsung Electronics Co., Ltd. Backlight unit and display apparatus including the same
CN102654601A (zh) * 2012-05-10 2012-09-05 深圳市华星光电技术有限公司 具有缓冲保护固定结构的导光板及其液晶显示装置
CN103216791A (zh) * 2013-04-19 2013-07-24 深圳市华星光电技术有限公司 一种导光板固定结构及使用该固定结构的背光模组
CN203868211U (zh) * 2014-05-16 2014-10-08 周杨 船舶雷达减震装置
CN104748017A (zh) * 2015-04-10 2015-07-01 北京京东方多媒体科技有限公司 背光源及显示装置
CN105674145A (zh) * 2016-01-05 2016-06-15 京东方科技集团股份有限公司 背光模组和显示装置

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100373228C (zh) * 2004-11-19 2008-03-05 中华映管股份有限公司 背光模块以及液晶显示模块
CN100403127C (zh) * 2005-11-25 2008-07-16 群康科技(深圳)有限公司 背光模组和液晶显示装置
JP5177099B2 (ja) * 2009-09-09 2013-04-03 ウシオ電機株式会社 光源装置
CN201724080U (zh) * 2010-02-11 2011-01-26 辅祥实业股份有限公司 背光模块的弹性顶出机构与液晶显示器
CN101865404B (zh) * 2010-05-17 2012-05-30 达运精密工业（苏州）有限公司 背光模组及显示装置
TW201245820A (en) * 2011-05-11 2012-11-16 Lextar Electronics Corp Backlight module
CN202511121U (zh) * 2012-02-03 2012-10-31 京东方科技集团股份有限公司 背光模组及显示装置
CN102635816B (zh) * 2012-03-29 2015-09-09 深圳市华星光电技术有限公司 背光模块及液晶显示装置
US8958030B2 (en) 2012-05-10 2015-02-17 Shenzhen China Star Optoelectronics Technology Co., Ltd. Backlight unit having buffer structures and liquid crystal display device using the same
CN202835045U (zh) * 2012-09-20 2013-03-27 创维液晶器件(深圳)有限公司 侧光式背光模组
US8985801B2 (en) * 2013-04-19 2015-03-24 Shenzhen China Star Optoelectronics Technology Co., Ltd. Light guide plate fixing structure and a backlight module using the same
CN104180254B (zh) * 2014-08-19 2016-10-12 深圳市华星光电技术有限公司 背光模组及液晶显示装置
CN105066008B (zh) * 2015-09-06 2017-12-12 昆山龙腾光电有限公司 一种背光模组以及液晶显示装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120182482A1 (en) * 2008-11-27 2012-07-19 Samsung Electronics Co., Ltd. Backlight unit and display apparatus including the same
CN102654601A (zh) * 2012-05-10 2012-09-05 深圳市华星光电技术有限公司 具有缓冲保护固定结构的导光板及其液晶显示装置
CN103216791A (zh) * 2013-04-19 2013-07-24 深圳市华星光电技术有限公司 一种导光板固定结构及使用该固定结构的背光模组
CN203868211U (zh) * 2014-05-16 2014-10-08 周杨 船舶雷达减震装置
CN104748017A (zh) * 2015-04-10 2015-07-01 北京京东方多媒体科技有限公司 背光源及显示装置
CN105674145A (zh) * 2016-01-05 2016-06-15 京东方科技集团股份有限公司 背光模组和显示装置

Also Published As

Publication number Publication date
US10209433B2 (en) 2019-02-19
CN105674145A (zh) 2016-06-15
US20180113252A1 (en) 2018-04-26

Similar Documents

Publication Publication Date Title
WO2017118094A1 (zh) 背光模组和显示装置
JP6415058B2 (ja) 画像表示装置
JP4800822B2 (ja) 液晶表示装置
US20020024623A1 (en) Liquid crystal display
CN208000440U (zh) 液晶模组及显示装置
US20160103273A1 (en) Backlight source and display device
JP2009093000A (ja) 液晶表示装置
WO2016123827A1 (zh) 液晶显示面板及液晶显示装置
US20170299804A1 (en) Backlight source module and display device
WO2016155212A1 (zh) 一种背光模组及显示装置
US10191312B2 (en) Rubber frame component, backlight module and display device
US20160109743A1 (en) Liquid crystal panel and manufacturing method thereof
US20240219623A1 (en) Back plate, frame structure, backlight module and display apparatus
US10545362B2 (en) Display device
US20200371391A1 (en) Liquid crystal display device and manufacturing method thereof
US20190137682A1 (en) Liquid crystal display device
WO2016127636A1 (zh) 背光源模组及显示装置
CN107735721B (zh) 显示装置
US20150301405A1 (en) Liquid crystal display device
JP2009272199A (ja) 液晶パネル用バックライトにおける衝撃吸収型スペーサピン
US20130107142A1 (en) Television and electronic apparatus
JP6463883B2 (ja) 表示装置
US11105492B2 (en) Backlight module and display device
CN210005833U (zh) 背光模组和显示装置
KR102600040B1 (ko) 표시 장치

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 15511376

Country of ref document: US

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16883224

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16883224

Country of ref document: EP

Kind code of ref document: A1

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 21/06/2019)

122 Ep: pct application non-entry in european phase

Ref document number: 16883224

Country of ref document: EP

Kind code of ref document: A1