WO2015066898A1 - 双面显示装置及其背光模组 - Google Patents

双面显示装置及其背光模组 Download PDF

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Publication number
WO2015066898A1
WO2015066898A1 PCT/CN2013/086790 CN2013086790W WO2015066898A1 WO 2015066898 A1 WO2015066898 A1 WO 2015066898A1 CN 2013086790 W CN2013086790 W CN 2013086790W WO 2015066898 A1 WO2015066898 A1 WO 2015066898A1
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WO
WIPO (PCT)
Prior art keywords
middle frame
light
frame
shell
double
Prior art date
Application number
PCT/CN2013/086790
Other languages
English (en)
French (fr)
Inventor
萧宇均
唐国富
张彦学
Original Assignee
深圳市华星光电技术有限公司
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 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US14/126,848 priority Critical patent/US9279933B2/en
Publication of WO2015066898A1 publication Critical patent/WO2015066898A1/zh

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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0075Arrangements of multiple light guides
    • G02B6/0078Side-by-side arrangements, e.g. for large area displays
    • G02B6/008Side-by-side arrangements, e.g. for large area displays of the partially overlapping type
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133615Edge-illuminating devices, i.e. illuminating from the side
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/0063Means for improving the coupling-out of light from the light guide for extracting light out both the major surfaces of the light guide
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0066Light 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 characterised by the light source being coupled to the light guide
    • G02B6/0068Arrangements of plural sources, e.g. multi-colour light sources
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0081Mechanical 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
    • G02B6/0085Means for removing heat created by the light source from the package
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0081Mechanical 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
    • G02B6/0086Positioning aspects
    • G02B6/0088Positioning aspects of the light guide or other optical sheets in the package
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0081Mechanical 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
    • G02B6/0093Means for protecting the light guide
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/133342Constructional arrangements; Manufacturing methods for double-sided displays
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133628Illuminating devices with cooling means

Definitions

  • Double-sided display device and backlight module thereof Double-sided display device and backlight module thereof
  • the present invention belongs to the field of liquid crystal display technology; more specifically, it relates to a double-sided display device and a backlight module thereof. Background technique
  • liquid crystal display devices have become more and more widely used in various industries.
  • both are designed as single-sided liquid crystal display devices, and in the place where double-sided display is required, two single-sided liquid crystal display devices are often used in back-to-back combination. This combination of two single-sided LCD devices back-to-back is not the best solution, both economically and externally.
  • the utility model can effectively solve the problem of high cost when using two single-sided display devices, and can also effectively improve the applicability;
  • the double-sided display device since the backplane mechanism of the single-sided display device does not exist, the double-sided display device is weak in strength, and the double-sided display cannot realize the frameless.
  • an object of the present invention is to provide a double-sided display device, including: a light guide plate including at least one light incident side surface, a first light exiting surface, and the first light emitting surface a second light-emitting surface disposed opposite to each other; a light source unit disposed adjacent to the light-incident side; a heat-dissipating base carrying the light source unit and discharging heat generated by the light source unit to a surrounding environment of the double-sided display device a first middle frame and a second middle frame, wherein the first middle frame is disposed above the first light emitting surface, the second middle frame is disposed under the second light emitting surface, and the first middle frame and the first The two middle frames are fixedly connected to the heat dissipation base, and the light guide plate is fixed in the accommodating cavity formed by the first middle frame, the second middle frame and the heat dissipation base; the first display panel and the second display panel, wherein
  • first middle frame and the second middle frame each include at least a frame edge and a frame body, wherein a frame edge of the first middle frame is disposed above the first light-emitting surface and configured to carry the first display panel, First middle frame
  • the frame is fixedly connected to the first surface of the heat dissipation base; the frame side of the second middle frame is disposed above the second light-emitting surface and is used for carrying the second display panel, the frame of the second middle frame and the heat dissipation base Second table fixed
  • the double-sided display device further includes: a first protective casing and a second protective casing, wherein the first protective casing and the second protective casing each include a casing and are guided by the two ends of the casing along the casing
  • the shell of the first protective shell is disposed on the first display panel and the first middle frame, and the shell side of the first protective shell is interposed in the frame of the first middle frame and dissipates heat.
  • the first protective case is fixed; the second protective case is disposed under the second display panel and the second middle frame, and the second protective case is inserted at the second middle frame
  • the second protective case is fixed between the body and the heat dissipation base.
  • the double-sided display device further includes: a first protective casing and a second protective casing, wherein the first protective casing and the second protective casing each include a casing and are guided by the two ends of the casing along the casing a casing of the first protective casing is disposed on the first display panel and the first middle frame, and a casing of the second protective casing is disposed on the second display panel and the second middle frame
  • the shell side of the first protective shell and the shell side of the second protective shell are both disposed on the outer side surface of the heat dissipation base and fixedly coupled, thereby further removing the first protective shell and the second protective shell of the double-sided display device Other parts outside the enclosure.
  • the non-display area of the two ends of the casing of the first protective casing and the casing of the second protective casing are both baking areas.
  • the shell side of the first protective shell and the shell side of the second protective shell are both painted edges.
  • the material of the first protective shell and/or the second protective shell is acrylic or glass steel.
  • the material of the heat dissipation base comprises at least one selected from the group consisting of gold, silver, copper, aluminum, and alloys thereof.
  • Another object of the present invention is to provide a backlight module, which is used in the above-mentioned double-sided display device, wherein the backlight module includes: a light guide plate, including at least one light-incident side surface, a first light-emitting surface, and a second light-emitting surface disposed opposite to the first light-emitting surface; a light source unit disposed adjacent to the light-incident side; a heat-dissipating base for carrying the light source unit; a first middle frame and a second middle frame, wherein a first middle frame is disposed above the first light-emitting surface and configured to carry a first display panel, a second middle frame is disposed under the second light-emitting surface and configured to carry a second display panel, and the first middle frame And the second middle frame is fixedly connected to the heat dissipation base, thereby fixing the light guide plate in the accommodating cavity formed by the first middle frame, the second middle frame and the heat dissipation base.
  • first middle frame and the second middle frame each include at least a frame edge and a frame body, wherein a frame edge of the first middle frame is disposed above the first light-emitting surface and configured to carry the first display panel,
  • the frame of the first middle frame is fixedly connected to the first surface of the heat dissipation base; the frame side of the second middle frame is disposed above the second light-emitting surface and is used for carrying the second display panel, and the frame of the second middle frame Fixed to the second surface of the heat sink base
  • the material of the heat dissipation base comprises at least one selected from the group consisting of gold, silver, copper, aluminum, and alloys thereof.
  • the double-sided display device and the backlight module thereof of the invention assemble the light source unit on the heat dissipation base, thereby improving the heat dissipation and realizing the frameless design of the double-sided display device, simplifying the structural design of the product, and additionally,
  • the protective cover is used to protect the display panel, which improves the appearance of the product and enhances the structural strength of the product.
  • . 2 is a schematic structural view of a double-sided display device according to Embodiment 2 of the present invention.
  • DETAILED DESCRIPTION It will be understood that spatially relative terms such as “under”, “above”, “below”, “above”, etc., may be used to describe the The relationship of one element or feature to another element or feature. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation. For example, if the device is turned “over” or “under” other elements or features ""”"above” or “above other elements or features”.
  • FIG. 1 is a schematic structural view of a double-sided display device according to Embodiment 1 of the present invention.
  • a double-sided display device provided by Embodiment 1 of the present invention mainly includes a first display panel.
  • the second display panel 12 and the backlight module 20 can emit light on both sides, and includes a first light emitting surface and a second light emitting surface.
  • the first display panel 11 is disposed on the first light emitting surface or the first display panel 11 is disposed opposite to the first light emitting surface; the second display panel 12 is disposed under the second light emitting surface or the second display panel 12 and the first The two luminous surfaces are oppositely arranged.
  • the first light emitting surface and the second light emitting surface of the backlight module 20 respectively provide display light sources to the first display panel 11 and the second display panel 12, so that the first display panel 11 and the second display panel 12 respectively pass the backlight module 20
  • the light provided by the first light emitting surface and the second light emitting surface displays an image.
  • the first display panel 11 and the second display panel 12 are all liquid crystal display panels in the prior art.
  • the size of the first display panel 11 is larger than the size of the second display panel 12, but the present invention is not limited thereto. In other embodiments, the size of the first display panel 11 may be equal to the size of the second display panel, or the size of the first display panel 11 may be smaller than the size of the second display panel.
  • the backlight module 20 includes a light guide plate 21 , a light source unit 22 , a heat dissipation base 23 , a first middle frame 24 , a second middle frame 25 , and a plurality of optical films 26 .
  • the light guide plate 21 may include four light-incident side surfaces 211, a first light-emitting surface 212 connected to the four light-incident side surfaces 211, and a second light-emitting surface 213 disposed opposite to the first light-emitting surface 212.
  • the first light-emitting surface 212 may be As the first light emitting surface of the backlight module 20 described above, the second light emitting surface 213 can serve as the second light emitting surface of the backlight module 20 described above.
  • each light source unit 22 may include a plurality of LEDs 221 and a PCB for carrying and supplying power to each of the LEDs 221. (Print Circuit Board) Board 222.
  • the heat dissipation base 23 is disposed adjacent to the two opposite light incident side surfaces 211 of the light guide plate 21 (ie, the two light incident side surfaces 211 adjacent to the two light source units 22 described above).
  • the heat dissipation base 23 includes a first mesa 231, a second mesa 232, a third mesa 233, and an inner side 234.
  • the light source unit 22 can be placed on the third mesa 233 and conform to the inner side 234, thereby enabling the heat sink base.
  • 23 carries the light source unit 22.
  • the heat dissipation base 23 is formed of a metal material having high thermal conductivity such as gold, silver, copper, aluminum or an alloy thereof.
  • the heat dissipation base 23 can improve the structural strength of the double-sided display device of the present embodiment as a whole, and since it has good thermal conductivity, the heat generated by the light source unit 22 can be discharged to the double-sided display of the embodiment.
  • the first middle frame 24 and the second middle frame 25 may be formed, for example, of plastic.
  • the first middle frame 24 includes a frame side 241 and a frame body 242.
  • the frame side 241 of the first middle frame 24 is disposed on the first light-emitting surface 212 and is used to carry the first display panel 11 and the frame of the first middle frame 24.
  • the body 242 is fixedly coupled to the first mesa 231 of the heat dissipation base 23.
  • the second middle frame 25 also includes a frame edge 251 and a frame body 252.
  • the frame edge 251 of the second middle frame 25 is disposed below the second light-emitting surface 213 and is used for carrying the second display panel 12, and the second middle frame 25
  • the frame 252 is fixedly connected to the second mesa 232 of the heat dissipation base 23; thus, the light guide plate 21 can be fixedly disposed in the accommodating cavity 27 formed by the first middle frame 24, the second middle frame 25 and the heat dissipation base 23.
  • the optical film 26 is divided into two parts. The optical film 26 is disposed between the first light-emitting surface 212 and the frame 241 of the first middle frame 24 to improve the light emitted by the first light-emitting surface 212.
  • the double-sided display device further includes a first protective case 28 and a second protective case 29. Both the first protective shell 28 and the second protective shell 29 may be injection molded by acrylic or may be of a FRP structure.
  • the first protective casing 28 includes a casing 281 and a shell edge 282 formed at two ends of the casing 281 along the direction of the casing 281 to the light guide plate 21, wherein the casing 281 of the first protective casing 28 is disposed at the first The display panel 11 and the frame 242 of the first middle frame 24 are disposed, and the shell side 282 of the first protective case 28 is interposed between the frame 242 of the first middle frame 24 and the heat dissipation base 23, and thus the first The protective case 28 is fixed.
  • the protective case 29 also includes a housing 291 and a shell edge 292 formed at two ends of the housing 291 along the direction of the housing 291 to the light guide plate 21, wherein the housing 291 of the second protective shell 29 is disposed on the second display.
  • Below the frame 252 of the panel 12 and the second middle frame 25, and the shell side 292 of the second protective casing 29 is interposed between the frame 252 of the second middle frame 25 and the heat dissipation base 23, thereby providing a second protection
  • the shell 29 is fixed.
  • the double-sided display device of the present embodiment causes the frame of the first middle frame 24 at both ends of the first light-emitting surface 212 due to the presence of the frame side 241 of the first middle frame 24 and the frame side 251 of the second middle frame 25.
  • a region A1 corresponding to the pressed region at both ends and a region A2 at both ends of the second display panel 12 corresponding to the pressed regions of both ends of the second light-emitting surface 213 form a non-display region.
  • the region B1 corresponding to the region A1 at both ends of the casing 281 of the first protective casing 28 may be
  • the non-display area) and the area B2 corresponding to the area A2 at both ends of the second protective case 29 are subjected to baking treatment, that is, the first protective case
  • the non-display areas of both ends of the housing 281 of the 28 and the housing 291 of the second protective case 29 are both painted areas.
  • FIG. 2 is a schematic structural view of a double-sided display device according to Embodiment 2 of the present invention. In the description of Embodiment 2, the same points as Embodiment 1 are not described herein again. Referring to FIG. 2, Embodiment 2 is different from Embodiment 1 in that: in order to protect the first display panel 11 and the second display panel 12.
  • the appearance of the double-sided display device of the present embodiment is enhanced and the structural strength of the double-sided display device of the present embodiment is enhanced.
  • the double-sided display device of the present embodiment further includes a first protective case 28 and a second protective case 29. Both the first protective shell 28 and the second protective shell 29 may be injection molded by acrylic or may be of a FRP structure.
  • the first protective casing 28 includes a casing 281 and a casing edge 282 formed at two ends of the casing 281 along the direction of the casing 281 to the light guide plate 21, wherein the casing 281 of the first protective casing 28 is disposed at the first
  • the display panel 11 and the first middle frame 24 are disposed, and the shell side 282 of the first protective case 28 is disposed on the outer side surface 235 of the heat dissipation base 23.
  • the second protective shell 29 also includes a housing 291 and a shell edge 292 formed at two ends of the housing 291 along the direction of the housing 291 to the light guide plate 21, wherein
  • the housing 291 of the protective case 29 is disposed under the second display panel 12 and the second middle frame 25, and the shell side 292 of the second protective case 29 is also disposed on the outer side surface 235 of the heat dissipation base 23.
  • the shell side 292 of the second protective shell 29 and the shell side 282 of the first protective shell 28 are fixedly coupled on the outer side surface 235 of the heat dissipation base 23, thereby further removing the first protective shell 28 of the double-sided display device of the present embodiment.
  • the double-sided display device of the present embodiment causes the frame of the first middle frame 24 at both ends of the first light-emitting surface 212 due to the presence of the frame side 241 of the first middle frame 24 and the frame side 251 of the second middle frame 25.
  • the region where the edge 241 is pressed and the region of the second light-emitting surface 213 which is pressed by the frame edge 251 of the second middle frame 25 are not emitted, and the first light-emitting surface 212 of the first display panel 11 and the first light-emitting surface 212 are further prevented.
  • the area A1 corresponding to the pressed area at both ends and the area A2 of the both ends of the second display panel 12 corresponding to the pressed areas of both ends of the second light-emitting surface 213 form a non-display area.
  • the region B1 corresponding to the region A1 at both ends of the casing 281 of the first protective casing 28 may be The non-display area) and the area B2 corresponding to the area A2 at both ends of the second protective case 29 (ie, the non-display area at both ends of the case 291 of the second protective case 29) are subjected to baking treatment, that is, the first protective case
  • the non-display area at both ends of the housing 281 of the 28 and the housing 291 of the second protective case 29 is a painted area.
  • the shell side 282 of the first protective shell 28 and the shell side 292 of the second protective shell 29 may also be subjected to a baking treatment.
  • the double-sided display device of the embodiment of the present invention mounts the light source unit on the heat dissipation base, thereby improving the heat dissipation and realizing the frameless design of the double-sided display device, simplifying the structural design of the product, and
  • the protective cover is used to protect the display panel, which improves the appearance of the product and enhances the structural strength of the product.

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

Abstract

提供了一种双面显示装置及其背光模组(20),双面显示装置包括:导光板(21),包括至少一入光侧面(211)、第一出光面(212)以及与第一出光面(212)相对设置的第二出光面(213);光源单元(22),邻近于入光侧面(211)设置;散热基座(23),承载光源单元(22)且将光源单元(22)产生的热量排出;第一中框(24)和第二中框(25),其中,第一中框(24)设置在第一出光面(212)之上,第二中框(25)设置在第二出光面(213)之下,并且第一中框(24)和第二中框(25)均与散热基座(23)固定连接,进而将导光板(21)固定在容置腔(27)内;第一显示面板(11)和第二显示面板(12),其中,第一显示面板(11)固定设置在第一中框(24)之上且与第一出光面(212)相对设置,第二显示面板(12)固定设置在第二中框(25)之下且与第二出光面(213)相对设置,双面显示装置在提高了散热性的同时实现了无边框化,且增强了结构强度。

Description

双面显示装置及其背光模组 技术领域
本发明属于液晶显示技术领域; 更具体地讲, 涉及一种双面显示装置及其 背光模组。 背景技术
近年来, 随着液晶技术的发展, 液晶显示装置在各行各业的应用也越来越 广泛。 在现有的液晶显示装置的设计中, 均设计为单面液晶显示装置, 而在需 要双面显示的场所, 多采用两台单面液晶显示装置背靠背组合使用。 这种采用 两台单面液晶显示装置背靠背组合使用的设计方案无论从经济还是从外光设 计的角度出发, 均不是最佳方案。
此外, 在现有的一种双面液晶显示装置的设计方案中, 其既可以有效地解 决在使用两台单面显示装置时成本高的问题, 同时也可以有效地提高适用性; 但是在此设计方案中, 由于不存在单面显示装置的背板机构, 所以该双面显示 装置强度较弱, 同时该双面显示器也无法实现无边框化。 发明内容 为了解决上述现有技术存在的问题, 本发明的目的在于提供一种双面显示 装置, 其包括: 导光板, 包括至少一入光侧面、 第一出光面以及与所述第一出 光面相对设置的第二出光面;光源单元,邻近于所述入光侧面设置;散热基座, 承载所述光源单元且将所述光源单元产生的热量排出到所述双面显示装置的 周围环境中; 第一中框和第二中框, 其中, 第一中框设置在所述第一出光面之 上, 第二中框设置在所述第二出光面之下, 并且第一中框和第二中框均与散热 基座固定连接, 进而将导光板固定在由第一中框、 第二中框和散热基座围绕形 成的容置腔内; 第一显示面板和第二显示面板, 其中, 第一显示面板固定设置 在第一中框之上且与所述第一出光面相对设置, 第二显示面板固定设置在第二 中框之下且与所述第二出光面相对设置。 进一步地, 所述第一中框和第二中框均至少包括框边和框体, 其中, 第一 中框的框边设置在所述第一出光面之上并用于承载第一显示面板, 第一中框的 框体与散热基座的第一台面固定连接; 第二中框的框边设置在所述第二出光面 之上并用于承载第二显示面板, 第二中框的框体与散热基座的第二台面固定连
进一步地, 所述双面显示装置还包括: 第一保护壳和第二保护壳, 其中, 第一保护壳和第二保护壳均包括壳体以及由壳体的两端沿着壳体到导光板的 方向沿伸形成的壳边; 第一保护壳的壳体设置在第一显示面板以及第一中框之 上, 第一保护壳的壳边插置在第一中框的框体与散热基座之间, 进而使第一保 护壳固定; 第二保护壳的壳体设置在第二显示面板以及第二中框之下, 第二保 护壳的壳边插置在第二中框的框体与散热基座之间, 进而使第二保护壳固定。 进一步地, 所述双面显示装置还包括: 第一保护壳和第二保护壳, 其中, 第一保护壳和第二保护壳均包括壳体以及由壳体的两端沿着壳体到导光板的 方向沿伸形成的壳边; 第一保护壳的壳体设置在第一显示面板以及第一中框之 上, 第二保护壳的壳体设置在第二显示面板以及第二中框之下, 第一保护壳的 壳边和第二保护壳的壳边均设置在散热基座的外侧面上并固定结合, 进而将所 述双面显示装置的除第一保护壳和第二保护壳之外的其他部件围罩。 进一步地,所述第一保护壳的壳体和第二保护壳的壳体的两端的非显示区 均为烤漆区。 进一步地, 所述第一保护壳的壳边和第二保护壳的壳边均为烤漆边。 进一步地, 第一保护壳和 /或第二保护壳的材质为亚克力或玻璃钢。 进一步地, 所述散热基座的材质包括选自金、 银、 铜、 铝以及它们的合金 所组成的组合中的至少一种。 本发明的另一目的还在于提供一种背光模组, 其用于上述的双面显示装置 中, 其中, 所述背光模组包括: 导光板, 包括至少一入光侧面、 第一出光面以 及与所述第一出光面相对设置的第二出光面; 光源单元, 邻近于所述入光侧面 设置; 散热基座, 用于承载所述光源单元; 第一中框和第二中框, 其中, 第一 中框设置在所述第一出光面之上并用于承载第一显示面板, 第二中框设置在所 述第二出光面之下并用于承载第二显示面板, 并且第一中框和第二中框均与散 热基座固定连接, 进而将导光板固定在由第一中框、 第二中框和散热基座围绕 形成的容置腔内。 进一步地, 所述第一中框和第二中框均至少包括框边和框体, 其中, 第一 中框的框边设置在所述第一出光面之上并用于承载第一显示面板, 第一中框的 框体与散热基座的第一台面固定连接; 第二中框的框边设置在所述第二出光面 之上并用于承载第二显示面板, 第二中框的框体与散热基座的第二台面固定连
进一步地, 所述散热基座的材质包括选自金、 银、 铜、 铝以及它们的合金 所组成的组合中的至少一种。 本发明的双面显示装置及其背光模组, 将光源单元装配到散热基座上, 在 提高了散热的同时实现了双面显示装置的无边框化, 简化了产品的结构设计, 另外, 又采用了保护壳对显示面板进行保护, 提高了产品外观性的同时增强了 产品的结构强度。
附图说明 通过结合附图时参考下面的详细描述, 本发明的上述和其他优点将会变得 更加明显, 附图中: 图 1是根据本发明的实施例 1的双面显示装置的结构示意图。 图 2是根据本发明的实施例 2的双面显示装置的结构示意图。 具体实施方式 将理解的是,可使用空间相对术语,如"在……之下"、 "在……之上"、 "下 面的"、 "上面的"等, 来描述如图中所示的一个元件或特征与其它元件或特征 的关系。将理解的是, 空间相对术语意在包含除了在附图中描述的方位之外的 装置在使用或操作中的不同方位。 例如, 如果在附图中装置被翻转, 则描述为 "在"其它元件或特征 "之下"或 "在"其它元件或特征 "下方" 的元件随后 将被定位为 "在"其它元件或特征 "之上"或在"其它元件或特征 "上方"。 因此, 示例性术语 "在……之下"可包括上面和下面两种方位。 所述装置可被 另外定位(旋转 90度或者在其它方位), 相应地解释这里使用的空间相对描述 符。 现在通过参照附图对实施例进行描述以解释本发明, 其中, 相同的标号始 终表示相同部件。 在附图中, 为了清晰起见, 可以夸大层和区域的厚度。 在下 面的描述中,为了避免公知结构和 /或功能的不必要的详细描述所导致的本发明 构思的混淆, 可省略公知结构和 /或功能的不必要的详细描述。 实施例 1 图 1是根据本发明的实施例 1的双面显示装置的结构示意图。 参照图 1, 本发明的实施例 1提供的双面显示装置主要包括第一显示面板
11、第二显示面板 12和背光模组 20。背光模组 20可双面发光, 其包括第一发 光面和第二发光面。 第一显示面板 11设置在第一发光面之上或者说第一显示 面板 11与第一发光面相对设置; 第二显示面板 12设置在第二发光面之下或者 说第二显示面板 12与第二发光面相对设置。背光模组 20的第一发光面和第二 发光面分别向第一显示面板 11和第二显示面板 12提供显示光源, 使得第一显 示面板 11和第二显示面板 12分别借由背光模组 20的第一发光面和第二发光 面提供的光而显示影像。 在本实施例中, 第一显示面板 11和第二显示面板 12均可是采用现有技术 中的液晶显示面板, 具体请査阅关于液晶显示面板的现有技术的相关知识内 容, 在此不再赘述。 此外, 在本实施例中, 第一显示面板 11的尺寸大于第二 显示面板 12的尺寸, 但本发明并不应局限于此。 在其他实施例中, 第一显示 面板 11的尺寸可与第二显示面板的尺寸相等, 或者第一显示面板 11的尺寸可 小于第二显示面板的尺寸。 在本实施例中, 背光模组 20包括导光板 21、 光源单元 22、 散热基座 23、 第一中框 24、 第二中框 25以及若干光学膜片 26。 导光板 21可包括四个入光侧面 211、与四个入光侧面 211连接的第一出光 面 212以及与第一出光面 212相对设置的第二出光面 213, 其中, 第一出光面 212可作为上述的背光模组 20的第一发光面,而第二出光面 213可作为上述的 背光模组 20的第二发光面。 在本实施例中, 两个光源单元 22分别邻近于两个相对的入光侧面 211设 置, 但本发明并不局限于此。 在其他实施例中, 也可采用一个光源单元 22邻 近于导光板 21的一个入光侧面 211设置, 或者也可采用四个光源单元 22分别 邻近于导光板 21的四个入光侧面 211设置。 此外, 在本实施例中, 每个光源 单元 22可包括若干 LED221以及用于承载并向每个 LED221提供电能的 PCB (Print Circuit Board, 印刷电路板) 板 222。 散热基座 23邻近于导光板 21的两个相对的入光侧面 211 (即与上述的两 个光源单元 22分别邻近的两个入光侧面 211 ) 设置。 散热基座 23包括第一台 面 231、 第二台面 232、 第三台面 233以及内侧面 234; 其中, 光源单元 22可 放置在第三台面 233之上并贴合内侧面 234,进而使散热基座 23承载光源单元 22。 在本实施例中, 散热基座 23由具有高导热性的金属材料形成, 例如金、 银、 铜、 铝或者它们的合金。 因此, 散热基座 23在能够整体提高本实施例的 双面显示装置的结构强度的同时, 由于其具有良好的热传导性, 因此能够将光 源单元 22产生的热量排出到本实施例的双面显示装置的周围环境中。 第一中框 24和第二中框 25可例如由塑料形成。第一中框 24包括框边 241 和框体 242,其中,第一中框 24的框边 241设置在第一出光面 212之上并用于 承载第一显示面板 11, 第一中框 24的框体 242与散热基座 23的第一台面 231 固定连接。 第二中框 25亦包括框边 251和框体 252, 其中, 第二中框 25的框 边 251设置在第二出光面 213的下方并用于承载第二显示面板 12, 第二中框 25的框体 252与散热基座 23的第二台面 232固定连接; 如此, 可将导光板 21 固定设置在由第一中框 24、 第二中框 25和散热基座 23围绕形成的容置腔 27 内。 若干光学膜片 26均分为两部分; 其中, 一部分光学膜片 26设置在第一出 光面 212与第一中框 24的框边 241之间, 用以改善由第一出光面 212射出的 光的亮度、色度以及均匀性等;而另一部分光学膜片 26设置在第二出光面 213 与第二中框 25的框边 251之间, 用以改善由第二出光面 213射出的光的亮度、 色度以及均匀性等。 在本实施例中, 为了保护第一显示面板 11和第二显示面板 12, 提高本实 施例的双面显示装置的外观性以及增强本实施例的双面显示装置的结构强度, 本实施例的双面显示装置还包括第一保护壳 28和第二保护壳 29。 第一保护壳 28和第二保护壳 29均可采用亚克力注塑成型, 或者也可采用玻璃钢结构。 第 一保护壳 28包括壳体 281以及壳体 281的两端沿着壳体 281到导光板 21的方 向沿伸形成的壳边 282,其中,第一保护壳 28的壳体 281设置在第一显示面板 11以及第一中框 24的框体 242之上,并且第一保护壳 28的壳边 282插置在第 一中框 24的框体 242和散热基座 23之间, 进而将第一保护壳 28固定。 第二 保护壳 29亦包括壳体 291以及壳体 291的两端沿着壳体 291到导光板 21的方 向沿伸形成的壳边 292,其中,第二保护壳 29的壳体 291设置在第二显示面板 12以及第二中框 25的框体 252之下,并且第二保护壳 29的壳边 292插置在第 二中框 25的框体 252和散热基座 23之间, 进而将第二保护壳 29固定。 此外, 本实施例的双面显示装置由于第一中框 24的框边 241以及第二中 框 25的框边 251的存在, 使得第一出光面 212的两端的被第一中框 24的框边 压合的区域和第二出光面 213的两端的被第二中框 25的框边 251压合的区域 的光无法射出, 进而使得第一显示面板 11的两端的与第一出光面 212的两端 的被压合的区域对应的区域 A1和第二显示面板 12的两端的与第二出光面 213 的两端的被压合的区域对应的区域 A2形成非显示区。 因此, 为了提高本实施 例的双面显示装置的品质, 可将第一保护壳 28的壳体 281的两端的与区域 A1 相对应的区域 B1 (即第一保护壳 28的壳体 281两端的非显示区) 和第二保护 壳 29的两端的与区域 A2相对应的区域 B2 (即第二保护壳 29的壳体 291两端 的非显示区) 进行烤漆处理, 也就是说, 第一保护壳 28的壳体 281和第二保 护壳 29的壳体 291的两端的非显示区均为烤漆区。 进一步地, 在本实施例中, 也可将第一保护壳 28的壳边 282和第二保护 壳 29的壳边 292进行烤漆处理, 使得第一保护壳 28的壳边 282和第二保护壳 29的壳边 292均形成烤漆边。 实施例 2 图 2是根据本发明的实施例 2的双面显示装置的结构示意图。 在实施例 2的描述中, 与实施例 1相同之处在此不再赘述, 参照图 2, 实 施例 2与实施例 1的不同之处在于: 为了保护第一显示面板 11和第二显示面 板 12,提高本实施例的双面显示装置的外观性以及增强本实施例的双面显示装 置的结构强度, 本实施例的双面显示装置还包括第一保护壳 28和第二保护壳 29。 第一保护壳 28和第二保护壳 29均可采用亚克力注塑成型, 或者也可采用 玻璃钢结构。 第一保护壳 28包括壳体 281以及壳体 281的两端沿着壳体 281 到导光板 21的方向沿伸形成的壳边 282, 其中, 第一保护壳 28的壳体 281设 置在第一显示面板 11以及第一中框 24之上, 并且第一保护壳 28的壳边 282 设置在散热基座 23的外侧面 235上。第二保护壳 29亦包括壳体 291以及壳体 291的两端沿着壳体 291到导光板 21的方向沿伸形成的壳边 292, 其中, 第二 保护壳 29的壳体 291设置在第二显示面板 12以及第二中框 25之下, 并且第 二保护壳 29的壳边 292也设置在散热基座 23的外侧面 235上。第二保护壳 29 的壳边 292与第一保护壳 28的壳边 282在散热基座 23的外侧面 235上固定结 合, 进而将本实施例的双面显示装置的除第一保护壳 28和第二保护壳 29之外 的其他部件围罩起来, 即将导光板 21、 光源单元 22、 散热基座 23、 第一中框 24、 第二中框 25、 若干光学膜片 26、 第一显示面板 11以及第二显示面板 12 等部件围罩起来。 此外, 本实施例的双面显示装置由于第一中框 24的框边 241以及第二中 框 25的框边 251的存在, 使得第一出光面 212的两端的被第一中框 24的框边 241压合的区域和第二出光面 213的两端的被第二中框 25的框边 251压合的区 域的光无法射出, 进而使得第一显示面板 11的两端的与第一出光面 212的两 端的被压合的区域对应的区域 A1和第二显示面板 12的两端的与第二出光面 213的两端的被压合的区域对应的区域 A2形成非显示区。 因此, 为了提高本 实施例的双面显示装置的品质, 可将第一保护壳 28的壳体 281的两端的与区 域 A1相对应的区域 B1 (即第一保护壳 28的壳体 281两端的非显示区) 和第 二保护壳 29的两端的与区域 A2相对应的区域 B2 (即第二保护壳 29的壳体 291两端的非显示区) 进行烤漆处理, 也就是说, 第一保护壳 28的壳体 281 和第二保护壳 29的壳体 291两端的非显示区为烤漆区。 进一步地, 在本实施例中, 也可将第一保护壳 28的壳边 282和第二保护 壳 29的壳边 292进行烤漆处理。 综上所述, 本发明的实施例的双面显示装置将光源单元装配到散热基座 上, 在提高了散热的同时实现了双面显示装置的无边框化, 简化了产品的结构 设计, 另外, 又采用了保护壳对显示面板进行保护, 提高了产品外观性的同时 增强了产品的结构强度。
尽管已经参照其示例性实施例具体显示和描述了本发明, 但是本领域的技 术人员应该理解, 在不脱离权利要求所限定的本发明的精神和范围的情况下, 可以对其进行形式和细节上的各种改变。

Claims

权利要求书
1、 一种双面显示装置, 其中, 包括: 导光板, 包括至少一入光侧面、 第一出光面以及与所述第一出光面相对设 置的第二出光面; 光源单元, 邻近于所述入光侧面设置; 散热基座, 承载所述光源单元且将所述光源单元产生的热量排出到所述双 面显示装置的周围环境中; 第一中框和第二中框, 其中 , 第一中框设置在所述第一出光面之上, 第二 中框设置在所述第二出光面之下, 并且第一中框和第二中框均与散热基座固定 连接, 进而将导光板固定在由第一中框、 第二中框和散热基座围绕形成的容置 腔内; 第一显示面板和第二显示面板, 其中, 第一显示面板固定设置在第一中框 之上且与所述第一出光面相对设置, 第二显示面板固定设置在第二中框之下且 与所述第二出光面相对设置。
2、 根据权利要求 1所述的双面显示装置, 其中, 所述第一中框和第二中 框均至少包括框边和框体, 其中, 第一中框的框边设置在所述第一出光面之上 并用于承载第一显示面板, 第一中框的框体与散热基座的第一台面固定连接; 第二中框的框边设置在所述第二出光面之上并用于承载第二显示面板, 第二中 框的框体与散热基座的第二台面固定连接。
3、 根据权利要求 2所述的双面显示装置, 其中, 所述双面显示装置还包 括: 第一保护壳和第二保护壳, 其中, 第一保护壳和第二保护壳均包括壳体以 及由壳体的两端沿着壳体到导光板的方向沿伸形成的壳边; 第一保护壳的壳体 设置在第一显示面板以及第一中框之上, 第一保护壳的壳边插在第一中框的框 体与散热基座之间, 进而使第一保护壳固定; 第二保护壳的壳体设置在第二显 示面板以及第二中框之下, 第二保护壳的壳边插在第二中框的框体与散热基座 之间, 进而使第二保护壳固定。
4、 根据权利要求 1所述的双面显示装置, 其中, 所述双面显示装置还包 括: 第一保护壳和第二保护壳, 其中, 第一保护壳和第二保护壳均包括壳体以 及由壳体的两端沿着壳体到导光板的方向沿伸形成的壳边; 第一保护壳的壳体 设置在第一显示面板以及第一中框之上, 第二保护壳的壳体设置在第二显示面 板以及第二中框之下, 第一保护壳的壳边和第二保护壳的壳边均设置在散热基 座的外侧面上并固定结合, 进而将所述双面显示装置的除第一保护壳和第二保 护壳之外的其他部件围罩。
5、 根据权利要求 3所述的双面显示装置, 其中 , 所述第一保护壳的壳体 和第二保护壳的壳体的两端的非显示区均为烤漆区。
6、 根据权利要求 4所述的双面显示装置, 其中, 所述第一保护壳的壳体 和第二保护壳的壳体的两端的非显示区均为烤漆区。
7、 根据权利要求 5所述的双面显示装置, 其中, 所述第一保护壳的壳边 和第二保护壳的壳边均为烤漆边。
8、 根据权利要求 6所述的双面显示装置, 其中, 所述第一保护壳的壳边 和第二保护壳的壳边均为烤漆边。
9、 根据权利要求 3所述的双面显示装置, 其中 , 第一保护壳和 /或第二保 护壳的材质为亚克力或玻璃钢。
10、根据权利要求 4所述的双面显示装置, 其中, 第一保护壳和 /或第二保 护壳的材质为亚克力或玻璃钢。
11、 根据权利要求 1所述的双面显示装置, 其中, 所述散热基座的材质包 括选自金、 银、 铜、 铝以及它们的合金所组成的组合中的至少一种。
12、 一种用于双面显示装置的背光模组, 其中, 所述背光模组包括: 导光板, 包括至少一入光侧面、 第一出光面以及与所述第一出光面相对设 置的第二出光面; 光源单元, 邻近于所述入光侧面设置; 散热基座, 承载所述光源单元且将所述光源单元产生的热量排出到所述双 面显示装置的周围环境中; 第一中框和第二中框, 其中, 第一中框设置在所述第一出光面之上并用于 承载第一显示面板, 第二中框设置在所述第二出光面之下并用于承载第二显示 面板, 并且第一中框和第二中框均与散热基座固定连接, 进而将导光板固定在 由第一中框、 第二中框和散热基座围绕形成的容置腔内。
13、 根据权利要求 12所述的背光模组, 其中, 所述第一中框和第二中框 均至少包括框边和框体, 其中, 第一中框的框边设置在所述第一出光面之上并 用于承载第一显示面板, 第一中框的框体与散热基座的第一台面固定连接; 第 二中框的框边设置在所述第二出光面之上并用于承载第二显示面板, 第二中框 的框体与散热基座的第二台面固定连接。
14、 根据权利要求 12所述的背光模组, 其中, 所述散热基座的材质包括 选自金、 银、 铜、 铝以及它们的合金所组成的组合中的至少一种。
15、 根据权利要求 13所述的背光模组, 其中, 所述散热基座的材质包括 选自金、 银、 铜、 铝以及它们的合金所组成的组合中的至少一种。
PCT/CN2013/086790 2013-11-05 2013-11-08 双面显示装置及其背光模组 WO2015066898A1 (zh)

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