WO2024169028A1 - 框架结构、背光模组及显示装置 - Google Patents

框架结构、背光模组及显示装置 Download PDF

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Publication number
WO2024169028A1
WO2024169028A1 PCT/CN2023/087355 CN2023087355W WO2024169028A1 WO 2024169028 A1 WO2024169028 A1 WO 2024169028A1 CN 2023087355 W CN2023087355 W CN 2023087355W WO 2024169028 A1 WO2024169028 A1 WO 2024169028A1
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WO
WIPO (PCT)
Prior art keywords
axis
extension portion
frame
buffer zone
frame structure
Prior art date
Application number
PCT/CN2023/087355
Other languages
English (en)
French (fr)
Inventor
郑博懋
颜彰庆
张政德
侯珮棻
Original Assignee
瑞仪(广州)光电子器件有限公司
瑞仪光电股份有限公司
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 瑞仪(广州)光电子器件有限公司, 瑞仪光电股份有限公司 filed Critical 瑞仪(广州)光电子器件有限公司
Priority to CN202380011675.3A priority Critical patent/CN118805135A/zh
Priority to US18/610,165 priority patent/US12353083B2/en
Publication of WO2024169028A1 publication Critical patent/WO2024169028A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • 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
    • 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
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements

Definitions

  • the invention relates to a frame structure, in particular to a frame structure capable of absorbing deformation, and a backlight module and a display device comprising the frame structure.
  • Existing display devices usually include a display panel and a backlight module, and the backlight module is connected to the display panel through its frame assembly.
  • the backlight modules currently used in vehicles must pass strict environmental tests, such as high temperature experiments.
  • the frame assembly will usually warp and deform due to heat.
  • the frame assembly uses fixing tape to attach the outer frame to the back frame. When the deformation of the outer frame due to thermal expansion is greater than the adhesion of the fixing tape, the outer frame will peel off from the weak adhesion, resulting in the possibility of peeling off the outer frame.
  • the object of the present invention is to provide a frame structure which can absorb the deformation caused by thermal expansion.
  • the frame structure of the present invention comprises a back frame and a fixed frame assembled on the back frame.
  • the fixed frame comprises a plurality of buffer zones, each buffer zone having an upper extension portion and a lower extension portion, the upper extension portion and the lower extension portion are spaced apart from each other along a first axis without contacting each other, and extend toward each other along a second axis, wherein the first axis is not parallel to the second axis.
  • Another technical means of the present invention is that the upper extension part and the lower extension part of each buffer zone are arranged along the The edges along the third axis are aligned with each other, wherein the third axis is perpendicular to both the first axis and the second axis.
  • each buffer zone extends along the second axis until it partially overlaps with the lower extension portion.
  • each buffer zone extends along the second axis to form a gap with the lower extension portion.
  • Another technical means of the present invention is that the lower surface of the upper extension portion of each buffer zone extends horizontally with the upper surface of the lower extension portion.
  • Another technical means of the present invention is that the lower surface of the upper extension portion of each buffer zone and the upper surface of the lower extension portion extend obliquely.
  • the fixed frame includes a frame body and a connecting portion surrounding the frame body, a plurality of buffer zones are formed at intervals on the connecting portion, and a slit is formed between the upper extension portion and the lower extension portion of each buffer zone along the edge of the third axis, wherein the third axis is perpendicular to both the first axis and the second axis.
  • each buffer zone extends inwardly from the periphery of the coupling portion along the third axis and does not extend to the frame portion.
  • Another technical means of the present invention is that a gap is formed between at least one of the upper extension portion and the lower extension portion of each buffer zone and the connecting portion, and the gap extends in the same direction as the upper extension portion or the lower extension portion.
  • the joint portion of the fixing frame is further formed with at least one notch, and the notch extends along the direction of the second axis or the third axis.
  • each buffer zone has a first base and a second base, the first base and the second base are spaced apart from each other, the upper extension portion extends from the first base toward the second base in a manner of gradually decreasing thickness, and the lower extension portion extends from the second base toward the first base in a manner of gradually decreasing thickness.
  • Another object of the present invention is to provide a frame structure, comprising a back frame and a fixed frame assembled on the back frame.
  • the fixed frame includes a plurality of buffer zones, which are respectively located at each corner of the fixed frame.
  • Each buffer zone has a corner plate portion, a first plate portion and a second plate portion.
  • the corner plate portion and the first plate portion, as well as the corner plate portion and the second plate portion are spaced from each other along a first axis and do not contact each other.
  • the first plate portion and the second plate portion are respectively located on different sides of the fixed frame and extend toward the direction of the corner plate portion. Stretching to define a narrow gap.
  • Another object of the present invention is to provide a backlight module, comprising the aforementioned frame structure and an optical unit.
  • the optical unit is clamped and positioned by a fixed frame and a back frame.
  • Another object of the present invention is to provide a display device, comprising the aforementioned backlight module and a display panel disposed on the backlight module.
  • the utility model has the effect that the fixed frame of the frame structure is provided with a buffer zone to produce a segmented design, and the upper extension part and the lower extension part of the buffer zone are designed to be spaced apart from each other along the first axis without contacting each other, thereby retaining space for expansion and deformation.
  • the upper extension part and the lower extension part can be guided to extend toward each other along the second axis, thereby absorbing the deformation of the fixed frame when it expands, avoiding the possibility of the fixed frame being warped or falling off from the back frame due to thermal expansion, thereby extending the service life of the frame structure.
  • FIG1 is a perspective exploded view of a preferred embodiment of a backlight module of the present invention.
  • FIG2a is a perspective view showing an enlarged view of a frame portion A of the fixing frame in FIG1;
  • FIG2 b is a perspective view showing an enlarged view of a frame portion B of the fixing frame in FIG1 ;
  • FIG3 is a side view illustrating the structure of one buffer zone of the fixed frame
  • FIG4 is a side view illustrating another form of the buffer zone
  • FIG5 is a side view illustrating another form of the buffer zone
  • FIG6 is a side view illustrating another form of the buffer zone
  • FIG7 is a side view showing that the fixing frame is further formed with at least one notch
  • FIG8 is a perspective view illustrating another configuration of a local structure in which a fixing frame is located at a corner.
  • FIG. 9 is a perspective exploded view of a preferred embodiment of a display device of the present invention.
  • a preferred embodiment of the backlight module 2 of the present invention includes a frame structure 3 and an optical unit 4 clamped by the frame structure 3.
  • the optical unit 4 includes a light source (not shown) and a plurality of optical films, but they are not the focus of the present invention and will not be described in detail here.
  • the frame structure 3 includes a back frame 31 and a fixed frame 32 combined on the back frame 31.
  • the backlight module 2 of the present invention mainly absorbs the deformation of the fixed frame 32 when it expands through the structural design of the fixed frame 32, so as to avoid the possibility of the fixed frame 32 warping or falling off the back plate due to thermal expansion.
  • the fixed frame 32 includes a frame body portion 321, a joint portion 322 surrounding the frame body portion 321, and a plurality of buffer zones 323 formed on the joint portion 322.
  • the fixed frame 32 is a rectangle as shown in FIG. 1.
  • the buffer zones 323 can also be distributed at the middle positions of the four sides (the specific structure is shown in FIG. 2b).
  • FIG. 2a is an enlarged view of the frame A in FIG. 1
  • FIG. 2b is an enlarged view of the frame B in FIG. 1.
  • each buffer zone 323 has an upper extension portion 324 and a lower extension portion 325.
  • the upper extension portion 324 and the lower extension portion 325 are spaced apart from each other along the first axis 11 without contacting each other, and extend toward each other along the second axis 12, wherein the first axis 11 is not parallel to the second axis 12.
  • the upper extension portion 324 and the lower extension portion 325 can be guided to extend toward each other along the second axis 12 to absorb the deformation caused by the thermal expansion of the fixed frame 32, and the effect of stress release can be achieved without adding additional components, so it is not easy to cause the fixed frame 32 to bulge due to the combined force squeezed during expansion. Therefore, the problem that the fixing frame 32 falls off from the back frame 31 due to the separation of the fixing frame 32 from the bottom adhesive due to the expansion protrusion can be avoided.
  • a slit 326 is formed between the upper extension portion 324 and the lower extension portion 325 of each buffer zone 323 along the edge of the third axis 13, wherein the third axis 13 is perpendicular to both the first axis 11 and the second axis 12.
  • the first axis 11, the second axis 12, and the third axis 13 are described by taking the angle facing the buffer zone 323 at the lower left of FIG. 2a as an example, and FIG. 3 is a side view of the buffer zone 323 at the lower left of FIG. 2a.
  • the joint portion 322 located in each buffer zone 323 has a first base portion 322a and a second base portion 322b, the first base portion 322a and the second base portion 322b are spaced apart from each other, the upper extension portion 324 extends from the first base portion 322a toward the second base portion 322b in a manner of gradually decreasing thickness, and the lower extension portion 325 extends from the second base portion 322b toward the first base portion 322a in a manner of gradually decreasing thickness.
  • the upper extension portion 324 and the lower extension portion 325 are oblique wedge-shaped structures, and therefore, the lower surface of the upper extension portion 324 and the upper surface of the lower extension portion 325 extend obliquely.
  • each buffer zone 323 can be aligned with each other at the edge along the third axis 13 as shown in FIG. 3, that is, the upper extension portion 324 and the lower extension portion 325 do not overlap on the second axis 12.
  • This design can be formed by directly processing and cutting, and the processing procedure is relatively simple.
  • the upper extension portion 324 and the lower extension portion 325 of each buffer zone 323 form a gap along the second axis 12. This is to cope with the material with a large expansion coefficient and retain a large expansion space.
  • FIG. 4 shows that is to cope with the material with a large expansion coefficient and retain a large expansion space.
  • the upper extension portion 324 of each buffer zone 323 extends along the second axis 12 to partially overlap with the lower extension portion 325 to produce a double retaining wall effect to prevent foreign matter from intruding.
  • the upper extension portion 324 and the lower extension portion 325 of each buffer zone 323 can also be a single thickness design as shown in FIG. 6, that is, the lower surface of the upper extension portion 324 of each buffer zone 323 and the upper surface of the lower extension portion 325 extend horizontally.
  • the slit 326 of each buffer zone 323 extends inward from the periphery of the joint portion 322 along the third axis 13 and does not extend to the frame portion 321.
  • the frame portion 321 is prevented from being cut off.
  • the possibility of light from the light source of the optical unit 4 (shown in FIG. 1 ) leaking through the slit 326 is effectively avoided.
  • a gap 33 is formed between at least one of the upper extension portion 324 and the lower extension portion 325 of each buffer zone 323 and the joint portion 322, and the gap 33 extends in the same direction as the upper extension portion 324 or the lower extension portion 325.
  • the upper extension portion 324 or the lower extension portion 325 can generate elasticity and maintain the pressing force of the upper extension portion 324 or the lower extension portion 325, thereby allowing the upper extension portion 324 or the lower extension portion 325 to more immediately and more completely reflect the volume change of the fixing frame 32 when it expands due to heat.
  • the joint portion 322 of the fixing frame 32 is further formed with at least one notch 34, which may be V-shaped or U-shaped and extends along the direction of the third axis 13, thereby evenly distributing and absorbing the deformation of the fixing frame 32 on both sides of the notch 34 due to thermal expansion. It should be particularly noted that the notch 34 may also extend along the direction of the second axis 12 depending on its location.
  • FIG. 1 the present invention discloses a frame structure 3, comprising a back frame 31 and a fixed frame 32 assembled on the back frame 31. Please refer to FIG.
  • each buffer zone 323 has a corner plate portion 353, a first plate portion 351 and a second plate portion 352, the corner plate portion 353 and the first plate portion 351 and the corner plate portion 353 and the second plate portion 352 are spaced from each other along the first axis 11 without contacting each other, the first plate portion 351 and the second plate portion 352 are respectively located on different sides of the fixed frame 32, and extend toward the direction of the corner plate portion 353 to define a slit 326.
  • the buffer zone 323 in the fixed frame 32 by designing the buffer zone 323 in the fixed frame 32 to produce a segmented design, and by making the corner plate portion 353 of each buffer zone 323 and the first plate portion 351 and the second plate portion 352 spaced apart from each other along the first axis 11, space for expansion and deformation can be reserved. Furthermore, through the structural design of the slit 326 of each buffer zone 323, when the fixed frame 32 is heated and expanded, the deformation generated during expansion can be absorbed by the corner plate portion 353 of each buffer zone 323 and the first plate portion 351 and the second plate portion 352, so that the slit 326 forms a structure equivalent to an expansion joint, and a gap for volume change is reserved.
  • the corner plate portion 353 since a corner plate portion 353 is further provided at the corner, and the corner plate portion 353 is separately provided from the first plate portion 351 and the second plate portion 352, the corner plate portion 353 will not be squeezed by the combined force generated by the expansion of the first plate portion 351 and the second plate portion 352, causing the corner plate portion 353 to be deformed. Therefore, the corner plate portion 353 can expand and suppress the first plate portion 351 and the second plate portion 352 located in two directions respectively without being easily raised, and can further avoid the possibility of the fixed frame 32 being warped or falling off from the back frame 31.
  • a display device 6 as shown in FIG. 9 can be formed.
  • the frame structure can respond to market trends and be suitable for fixed frame attached backlight modules.
  • the fixed frame 32 does not need to be designed as an iron part, but can be replaced by a plastic part.
  • it can meet the vehicle-mounted use environment and conform to the future narrow forehead design trend of the backlight module.
  • the frame structure 3 of the present invention and the backlight module 2 and display device 6 including the frame structure 3 are provided with a buffer zone 323 through the fixed frame 32 of the frame structure 3 to produce a segmented design, and the upper extension portion 324 and the lower extension portion 325 of the buffer zone 323 are designed to be spaced apart from each other along the first axis 11 without contacting each other, thereby retaining space for expansion and deformation.
  • the upper extension portion 324 and the lower extension portion 325 can be guided to extend toward each other along the second axis 12, thereby absorbing the deformation of the fixed frame 32 when it expands, avoiding the possibility of the fixed frame 32 being warped or falling off from the back frame 31 due to thermal expansion, thereby extending the service life of the frame structure 3, and indeed achieving the purpose of the present invention.
  • Backlight module 3 Framework structure 31
  • Back frame 32
  • Fixed frame 321
  • Frame 322 Joint 322a First base 322b Second base 323
  • Buffer 324 Upper extension 325
  • Lower extension 326 Slit 33
  • Gap 34 missing slot 351
  • Corner Panel 4 Optical unit 5
  • Display Panel 6 Display device 11 First Axis 12 Second Axis 13
  • the Third Axis A and B boxes indicate the location.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Planar Illumination Modules (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)

Abstract

一种框架结构、背光模组及显示装置，框架结构包含背框及组合于背框上的固定框。固定框包括多个缓冲区，每一缓冲区具有上延伸部及下延伸部，上延伸部与下延伸部沿着第一轴线相互间隔而不互相接触，且沿着第二轴线朝向彼此延伸，其中第一轴线不平行于第二轴线。利用缓冲区的上延伸部及下延伸部不互相接触的设计，可以吸纳固定框受热膨胀时的变形量，避免固定框因受热膨胀而由背框翘曲或脱落的可能，进而延长框架结构的使用年限。

Description

框架结构、背光模组及显示装置
本申请要求享有于2023年2月14日提交的申请号为202310119872.9、发明名称为“框架结构、背光模块及显示器”的中国专利申请的优先权，在此通过引用将其全部内容结合于本申请中。
技术领域
本发明涉及一种框架结构，特别是涉及一种可以吸纳变形量的框架结构及包含该框架结构的背光模组及显示装置。
背景技术
现有的显示装置，通常包含显示面板及背光模组，该背光模组通过其框架组件来连接显示面板。目前用于车载的背光模组都须通过严苛的环境测试，例如高温实验。在高温或温度多变的环境下，框架组件通常会因为受热而翘曲变形。一般来说，框架组件利用固定胶带将外框贴附于背框上，当外框因受热膨胀所产生的变形量大于固定胶带的贴附力时，外框会从贴附力薄弱处剥离而导致外框有剥落的可能。
因此，如何在不增加额外零件的前提下，增加外框的固定效果，避免外框容易因受热而变形，为业界亟需努力的目标。
发明内容
本发明的目的在于提供一种可以吸纳受热膨胀的变形量的框架结构。
本发明的框架结构，包含背框及组合于背框上的固定框。固定框包括多个缓冲区，每一缓冲区具有上延伸部及下延伸部，上延伸部与下延伸部沿着第一轴线相互间隔而不互相接触，且沿着第二轴线朝向彼此延伸，其中第一轴线不平行于第二轴线。
本发明的另一技术手段，在于每一缓冲区的上延伸部与下延伸部在沿 着第三轴线的边缘互相对齐，其中，第三轴线同时垂直于第一轴线与第二轴线。
本发明的另一技术手段，在于每一缓冲区的上延伸部沿着第二轴线延伸至与下延伸部局部重叠。
本发明的另一技术手段，在于每一缓冲区的上延伸部沿着第二轴线延伸至与下延伸部形成间隔。
本发明的另一技术手段，在于每一缓冲区的上延伸部的下表面与下延伸部的上表面水平地延伸。
本发明的另一技术手段，在于每一缓冲区的上延伸部的下表面与下延伸部的上表面倾斜地延伸。
本发明的另一技术手段，在于固定框包括框体部及环绕框体部的结合部，多个缓冲区间隔形成在结合部上，且每一缓冲区的上延伸部与下延伸部在沿着第三轴线的边缘之间形成有狭缝，其中，第三轴线同时垂直于第一轴线与第二轴线。
本发明的另一技术手段，在于每一缓冲区的狭缝由结合部的周缘沿着第三轴线向内延伸且不延伸至框体部。
本发明的另一技术手段，在于每一缓冲区的上延伸部与下延伸部中的至少一者与结合部之间形成有间隙，间隙与上延伸部或下延伸部同向延伸。
本发明的另一技术手段，在于固定框的结合部还形成有至少一缺槽，缺槽沿着第二轴线或第三轴线的方向延伸。
本发明的另一技术手段，在于每一缓冲区中的结合部具有第一基部及第二基部，第一基部及第二基部相互间隔，上延伸部由第一基部朝向第二基部以厚度渐缩的方式延伸，下延伸部由第二基部朝向第一基部以厚度渐缩的方式延伸。
本发明的另一目的，在于提供框架结构，包含背框及组合于背框上的固定框。其中，固定框包括多个缓冲区，其分别位于固定框的各个角落，每一缓冲区具有角落板部、第一板部及第二板部，角落板部与第一板部之间以及角落板部与第二板部之间皆沿着第一轴线相互间隔而不互相接触，第一板部与第二板部分别位于固定框的不同侧，且朝向角落板部的方向延 伸而界定出狭缝。
本发明的另一目的，在于提供一种背光模组，包含前述的框架结构及光学单元。光学单元由固定框与背框共同夹持定位。
本发明的另一目的，在于提供一种显示装置，包含前述的背光模组及设置于背光模组上的显示面板。
本发明的功效在于，框架结构的固定框设置有缓冲区，以产生分段造型的设计，利用缓冲区的上延伸部及下延伸部沿着第一轴线相互间隔而不互相接触的设计，由此保留膨胀变形的空间。在固定框受热膨胀时可以导引上延伸部与下延伸部沿着第二轴线朝向彼此延伸，由此吸纳固定框膨胀时的变形量，避免固定框因为受热膨胀而由背框翘曲或脱落的可能，进而延长框架结构的使用年限。
附图说明
为了更完整地了解本发明的实施例及其优点，现在参照附图做出下列描述，其中：
图1是本发明的背光模组的较佳实施例的立体分解图；
图2a是显示图1中固定框的框示处A的放大图的立体图；
图2b是显示图1中固定框的框示处B的放大图的立体图；
图3是说明固定框的其中一缓冲区的结构的侧视图；
图4是说明缓冲区的另一种形态的侧视图；
图5是说明缓冲区的另一种形态的侧视图；
图6是说明缓冲区的另一种形态的侧视图；
图7是说明固定框还形成有至少一缺槽的侧视图；
图8是说明固定框位于角落处的局部结构的另一种配置方式的立体图；及
图9是本发明的显示装置的较佳实施例的立体分解图。
具体实施方式
有关本发明的相关申请专利特色与技术内容，在以下参考附图的较佳 实施例的详细说明中，将可清楚的呈现。在进行详细说明前应注意的是，类似的元件以相同的附图标记来表示。以下实施方式所提到的方向用语，例如：上、下、左、右、前、后、底、顶等，仅是参考附加图式的方向。因此，所使用的方向用语用以说明而非限制本发明。
参阅图1，为本发明的背光模组2的较佳实施例，其包含框架结构3及由框架结构3夹持的光学单元4。光学单元4包含灯源(图未示)及多个光学膜片，但并非本发明的重点，于此不再赘述。框架结构3包含背框31及组合于背框31上的固定框32。本发明的背光模组2主要通过固定框32的结构设计来吸纳固定框32膨胀时的变形量，避免固定框32因受热膨胀而出现翘曲或由背板脱落的可能。
更详细地说，参阅图2a，固定框32包括框体部321、环绕框体部321的结合部322及多个形成于结合部322上的缓冲区323。于本实施例中，固定框32为如图1所示的矩形，缓冲区323除了分布于固定框32靠近角落的位置(具体结构如图2a所示)，也可以分布于四个边的中间位置(其具体结构如图2b所示)。当固定框32膨胀时角落或边缘位置具有压制效果，在车载环境下可确保固定框32的贴附性，以实现不追加额外部材的目的，达成防止固定框32剥落的技术效果。其中，图2a为图1中框示处A的放大图，图2b为图1中框示处B的放大图。
参阅图2a、图2b及图3，每一缓冲区323具有上延伸部324及下延伸部325。上延伸部324与下延伸部325沿着第一轴线11相互间隔而不互相接触，且沿着第二轴线12朝向彼此延伸，其中第一轴线11不平行于第二轴线12。通过在固定框32设计缓冲区323，产生分段造型的设计，而且每一缓冲区323的上延伸部324与下延伸部325因为沿着第一轴线11相互间隔而不互相接触，由此保留膨胀变形的空间。当固定框32受热膨胀时，可以导引上延伸部324与下延伸部325沿着第二轴线12朝向彼此延伸，吸纳固定框32受热膨胀所产生的变形量，可以在不追加额外部材的条件下，达到应力释放的效果，因此不容易因受到膨胀时的合力挤压而导致固定框32凸起。因此，可以避免因固定框32因膨胀凸起与底部黏胶脱离而造成固定框32从背框31上脱落的问题。
于本实施例中，每一缓冲区323的上延伸部324与下延伸部325在沿着第三轴线13的边缘之间形成有狭缝326，其中，第三轴线13同时垂直于第一轴线11与第二轴线12。要特别说明的是，在本较佳实施例的叙述中，第一轴线11、第二轴线12及第三轴线13是以面向图2a左下方的缓冲区323的角度为例说明，图3即为图2a左下方的缓冲区323的侧视图。
于本实施例中，如图3所示，位于每一缓冲区323中的结合部322具有第一基部322a及第二基部322b，第一基部322a及第二基部322b相互间隔，上延伸部324由第一基部322a朝向第二基部322b以厚度渐缩的方式延伸，下延伸部325由第二基部322b朝向第一基部322a以厚度渐缩的方式延伸。也就是说，上延伸部324与下延伸部325为斜楔形结构，因此，上延伸部324的下表面与下延伸部325的上表面倾斜地延伸。
要进一步说明的是，每一缓冲区323的上延伸部324与下延伸部325可以如图3所示，在沿着第三轴线13的边缘互相对齐，也就是上延伸部324与下延伸部325在第二轴线12上不重叠。此设计只需直接加工切断即可成型，加工程序较为简便。在另一些实施例中，如图4所示，每一缓冲区323的上延伸部324与下延伸部325沿着第二轴线12形成间隔，这是因应膨胀系数较大的材质，需保留较大的膨胀空间。而在某些实施例中，如图5所示，每一缓冲区323的上延伸部324沿着第二轴线12延伸至与下延伸部325局部重叠，以产生双重挡墙的效果，而避免异物侵入。另外，在某些实施例中，每一缓冲区323的上延伸部324与下延伸部325也可以是如图6所示为单一厚度的设计，也就是说，每一缓冲区323的上延伸部324的下表面与下延伸部325的上表面水平地延伸。
通过每一缓冲区323的狭缝326的结构设计，使得固定框32在受热膨胀时，可以经由每一缓冲区323的上延伸部324与下延伸部325吸纳膨胀时产生的变形量，使狭缝326形成等同于伸缩缝(Expansion joint)的结构，而预留体积变化量的缝隙。
要特别说明的是，如图2a及图2b所示，每一缓冲区323的狭缝326由结合部322的周缘沿着第三轴线13向内延伸且不延伸至框体部321。通过不让狭缝326延伸至框体部321的设计，避免框体部321被切断，可以 有效避免光学单元4(显示于图1中)的光源的光线由狭缝326漏光的可能。另外，每一缓冲区323的上延伸部324与下延伸部325中的至少一者，与结合部322之间形成有间隙33，间隙33与上延伸部324或下延伸部325同向延伸。如此一来，可以让上延伸部324或下延伸部325产生弹性，保持上延伸部324或下延伸部325的压制力，由此，可以使上延伸部324或下延伸部325在受热膨胀能更实时且更完整地反应固定框32的体积变化。
参阅图7，在某些实施例中，固定框32的结合部322还形成有至少一缺槽34，缺槽34可以是V形或U形，并且是沿着第三轴线13的方向延伸，由此能平均分摊吸收固定框32位于缺槽34两侧因受热膨胀产生的变形量。要特别说明的是，缺槽34视其设置位置，也可以沿着第二轴线12的方向延伸。
图2a及图2b所示的实施方式除了前述说明之外，也可以是如下所述。如图1所示，本发明揭露一种框架结构3，包含背框31及组合于背框31上的固定框32。请参阅图8，其中，固定框32包括多个缓冲区323，其分别位于固定框32的各个角落，每一缓冲区323具有角落板部353、第一板部351及第二板部352，角落板部353与第一板部351之间以及角落板部353与第二板部352之间皆沿着第一轴线11相互间隔而不互相接触，第一板部351与第二板部352分别位于固定框32的不同侧，且朝向角落板部353的方向延伸而界定出狭缝326。
如此一来，通过在固定框32设计缓冲区323以产生分段造型的设计，而且通过使每一缓冲区323的角落板部353分别与第一板部351、第二板部352之间因为沿着第一轴线11相互间隔而不互相接触，由此可以保留膨胀变形的空间。再者，通过每一缓冲区323的狭缝326的结构设计，使得固定框32在受热膨胀时，可以经由每一缓冲区323的角落板部353分别与第一板部351、第二板部352吸纳膨胀时产生的变形量，以使狭缝326形成等同于伸缩缝(Expansion joint)的结构，而预留体积变化量的缝隙。
况且，在本发明中，由于角落处还设计有角落板部353，而且角落板部353分别与第一板部351、第二板部352分离设置，所以角落板部353并不会因受到第一板部351、第二板部352膨胀时产生的合力挤压而导致角 落板部353凸起。因此，角落板部353在不容易凸起的状态下，就还能对分别位于两个方向的第一板部351、第二板部352进行膨胀压制，更能避免固定框32由背框31翘曲或脱落的可能。
于背光模组2上设置显示面板5，即可形成如图9所示的显示装置6。
如此一来，框架结构就可以因应市场趋势，适用于固定框贴附式的背光模组，一方面，固定框32可以不须设计为铁件，而是可以塑料件来评估取代，另一方面，则能够满足车载使用环境，符合未来背光模组的窄额缘设计趋势。
本发明的框架结构3及包含框架结构3的背光模组2及显示装置6，通过框架结构3的固定框32设置有缓冲区323，以产生分段造型的设计，利用缓冲区323的上延伸部324及下延伸部325沿着第一轴线11相互间隔而不互相接触的设计，由此保留膨胀变形的空间。在固定框32受热膨胀时可以导引上延伸部324与下延伸部325沿着第二轴线12朝向彼此延伸，由此吸纳固定框32膨胀时的变形量，避免固定框32因受热膨胀而由背框31翘曲或脱落的可能，进而延长框架结构3的使用年限，确实能达成本发明的目的。
以上所述仅为本发明的较佳实施例，应当不能以此限定本发明实施的范围，即大凡依本发明的权利要求范围及说明书内容所作的简单的等效变化与修饰，皆仍属本发明的专利涵盖范围内。
【附图标记列表】
2          背光模组
3          框架结构
31         背框
32         固定框
321        框体部
322        结合部
322a       第一基部
322b       第二基部
323        缓冲区
324        上延伸部
325        下延伸部
326        狭缝
33         间隙
34         缺槽
351        第一板部
352        第二板部
353        角落板部
4          光学单元
5          显示面板
6          显示装置
11         第一轴线
12         第二轴线
13         第三轴线
A、B       框示处。

Claims (14)

  1. 一种框架结构，包含：
    背框；及
    固定框，其组合于所述背框上，其中，所述固定框包括多个缓冲区，每一缓冲区具有上延伸部及下延伸部，所述上延伸部与所述下延伸部沿着第一轴线相互间隔而不互相接触，且沿着第二轴线朝向彼此延伸，其中所述第一轴线不平行于所述第二轴线。
  2. 根据权利要求1所述的框架结构，其中，每一缓冲区的所述上延伸部与所述下延伸部在沿着第三轴线的边缘互相对齐，其中，第三轴线同时垂直于所述第一轴线与所述第二轴线。
  3. 根据权利要求1所述的框架结构，其中，每一缓冲区的所述上延伸部沿着所述第二轴线延伸至与所述下延伸部局部重叠。
  4. 根据权利要求1所述的框架结构，其中，每一缓冲区的所述上延伸部沿着所述第二轴线延伸至与所述下延伸部形成间隔。
  5. 根据权利要求1所述的框架结构，其中，每一缓冲区的所述上延伸部的下表面与所述下延伸部的上表面水平地延伸。
  6. 根据权利要求1所述的框架结构，其中，每一缓冲区的所述上延伸部的下表面与所述下延伸部的上表面倾斜地延伸。
  7. 根据权利要求1所述的框架结构，其中，所述固定框包括框体部及环绕所述框体部的结合部，所述多个缓冲区间隔形成在所述结合部上，且每一缓冲区的所述上延伸部与所述下延伸部在沿着第三轴线的边缘之间形成有狭缝，其中，所述第三轴线同时垂直于所述第一轴线与所述第二轴线。
  8. 根据权利要求7所述的框架结构，其中，每一缓冲区的所述狭缝由所述结合部的周缘沿着所述第三轴线向内延伸且不延伸至所述框体部。
  9. 根据权利要求7所述的框架结构，其中，每一缓冲区的所述上延伸部与所述下延伸部中的至少一者与所述结合部之间形成有间隙，所述间隙与所述上延伸部或所述下延伸部同向延伸。
  10. 根据权利要求7所述的框架结构，其中，所述固定框的所述结合部 还形成有至少一缺槽，所述缺槽沿着所述第二轴线或所述第三轴线的方向延伸。
  11. 根据权利要求7所述的框架结构，其中，每一缓冲区中的所述结合部具有第一基部及第二基部，所述第一基部及所述第二基部相互间隔，所述上延伸部由所述第一基部朝向所述第二基部以厚度渐缩的方式延伸，所述下延伸部由所述第二基部朝向所述第一基部以厚度渐缩的方式延伸。
  12. 一种框架结构，包含：
    背框；及
    固定框，其组合于所述背框上，其中，所述固定框包括多个缓冲区，所述多个缓冲区分别位于所述固定框的各个角落，每一缓冲区具有角落板部、第一板部及第二板部，所述角落板部与所述第一板部之间以及所述角落板部与所述第二板部之间，皆沿着第一轴线相互间隔而不互相接触，所述第一板部与所述第二板部分别位于所述固定框的不同侧，且朝向所述角落板部的方向延伸而界定出狭缝。
  13. 一种背光模组，包含根据权利要求1至12中任一项所述的框架结构及光学单元，所述光学单元由所述固定框与所述背框共同夹持定位。
  14. 一种显示装置，包含根据权利要求13所述的背光模组及设置于所述背光模组上的显示面板。
PCT/CN2023/087355 2023-02-14 2023-04-10 框架结构、背光模组及显示装置 WO2024169028A1 (zh)

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TW202433153A (zh) 2024-08-16
CN118805135A (zh) 2024-10-18

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