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CN101338867B - Backlight module and liquid crystal display device - Google Patents

Backlight module and liquid crystal display device Download PDF

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Publication number
CN101338867B
CN101338867B CN200810211199A CN200810211199A CN101338867B CN 101338867 B CN101338867 B CN 101338867B CN 200810211199 A CN200810211199 A CN 200810211199A CN 200810211199 A CN200810211199 A CN 200810211199A CN 101338867 B CN101338867 B CN 101338867B
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CN
China
Prior art keywords
lampshade
backlight module
heat
light source
light
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Expired - Fee Related
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CN200810211199A
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Chinese (zh)
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CN101338867A (en
Inventor
陈中荣
颜同义
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AUO Corp
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AU Optronics Corp
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133628—Illuminating devices with cooling means

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Liquid Crystal (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

A liquid crystal display device and a backlight module include a heat dissipation plate, a light guide plate and a light source unit. The heat dissipation plate comprises a first part and a second part, and the second part is suitable for moving between a first position and a second position. The light guide plate is disposed on the first portion of the heat dissipation plate. The light guide plate is provided with a light incident surface, and an accommodating space is formed between the light incident surface and the second part. When the second part is located at the first position, the light source unit is suitable for being placed in the accommodating space along the preset direction, and the light source unit comprises a lampshade and a light source group connected with the lampshade. When the light source unit is placed in the accommodating space along the preset direction, the second part of the heat dissipation plate is suitable for moving to the second position to be in contact with the lampshade. The backlight module has better heat dissipation efficiency. In addition, the invention also provides a liquid crystal display device using the backlight module.

Description

Backlight module and liquid crystal indicator
Technical field
The present invention relates to a kind of display device, and particularly relate to a kind of liquid crystal indicator (LiquidCrystal Display, LCD) and backlight module (Backlight Module).
Background technology
Along with the progress of plane display technique add flat display apparatus have in light weight, volume is little and advantage such as power saving, flat display apparatus is more and more universal.Common flat display apparatus has liquid crystal indicator, electric plasma display device (Plasma Display Panel; PDP), organic LED display device (Organic Light Emitting Diode Display; OLED Display) and electrophoretic display apparatus (Electrophoretic Display; EPD) etc., wherein the popularity rate with liquid crystal indicator is the highest again.
Liquid crystal indicator comprises display panels (LCD Panel) and backlight module, and wherein backlight module is in order to provide area source to display panels.The quality of the area source that therefore, backlight module provided and the display quality of liquid crystal indicator are closely bound up.
Fig. 1 is the synoptic diagram of existing a kind of backlight module.Please with reference to Fig. 1, existing backlight module 100 comprises heat sink 110, LGP 120, light source cell 130, a plurality of blooming 140 and reflector plate 150.LGP 120 is to be disposed on the heat sink 110, and reflector plate 150 is to be disposed between LGP 120 and the heat sink 110.LGP 120 has incidence surface 122 and exiting surface 124, and blooming 140 is to be disposed on the exiting surface 124.In addition, form accommodation space S1 between the incidence surface 122 of LGP 120 and the sidewall 112 of heat sink 110, and light source cell 130 is drawing out type, it can be inserted in the accommodation space S1 along the Z axle.
Hold above-mentioned, the light sources 134 that light source cell 130 comprises lampshade 132 and connects lampshade 132, wherein light sources 134 is to stick in lampshade 132 through heat-conducting glue 136.Light sources 134 comprises strip substrate 134a and is disposed at a plurality of light emitting diodes (Light EmittingDiode, LED) 134b on the strip substrate 134a.Light emitting diode 134b is the light emitting diode of top emission type, and it is in order to provide light 135 to LGP 120.LGP 120 can convert light 135 to area source, and reflector plate 150 is in order to reflection ray 135, so that light 135 penetrates from the exiting surface 124 of LGP 120, blooming 140 is then in order to the area source homogenising.
In backlight module 100; Owing to possibly damaging, light source cell 130 needs to change; And change light source cell 130 for ease; Can leave clearance G and H between the lampshade 132 of light source cell 130 and the sidewall 112 of heat sink 110 and between the bottom 113 of the lampshade 132 of light source cell 130 and heat sink 110, so that light source cell 130 is easy to extract.
In addition, the heat that light emitting diode 134b produced can be via strip substrate 134a and heat-conducting glue 136 and is passed to lampshade 132.Yet; Owing to have clearance G and H between the sidewall 112 of lampshade 132 and heat sink 110 and the bottom 113; The heat that light emitting diode 134b is produced can't be directly conducted to the sidewall 112 and the bottom 113 of heat sink 110, so existing backlight module 100 has the problem of poor heat radiation.So, the easy Yin Gaowen of light emitting diode 134b and cause luminescence efficiency variation, colour cast (Color Shift) and problem such as shorten serviceable life.
Summary of the invention
The present invention provides a kind of backlight module, to improve radiating efficiency.
The present invention also proposes a kind of liquid crystal indicator, and it has better reliability degree.
For reaching above-mentioned advantage, the present invention proposes a kind of backlight module, and it comprises heat sink, LGP and light source cell.Heat sink comprises first and second portion, and second portion is suitable between a primary importance and a second place, moving.LGP is disposed in the first of heat sink.LGP has incidence surface, and forms accommodation space between incidence surface and the second portion.Light source cell comprises lampshade and the light sources that is connected lampshade, and when second portion was positioned at primary importance, light source cell was suitable for inserting in the accommodation space along predetermined direction.After light source cell was inserted in the accommodation space along predetermined direction, the second portion of heat sink was suitable for moving to the second place to contact with lampshade.
In one embodiment of this invention, above-mentioned light sources comprises the strip substrate and is disposed at a plurality of pointolites on the strip substrate.
In one embodiment of this invention, above-mentioned backlight module also comprises first heat-conducting piece, is connected between strip substrate and the lampshade.
In one embodiment of this invention, above-mentioned first heat-conducting piece is two-sided heat-conducting glue, and two-sided heat-conducting glue has two and paste face, sticks in strip substrate and lampshade respectively.
In one embodiment of this invention, above-mentioned pointolite is the top emission type pointolite.Lampshade has bottom and sidewall, and the sidewall of lampshade is relative with incidence surface, and first heat-conducting piece is connected in the sidewall of lampshade.
In one embodiment of this invention, above-mentioned second portion has bottom and sidewall, and the sidewall and the incidence surface of second portion are relative, and are suitable for contacting with the sidewall of lampshade.
In one embodiment of this invention, above-mentioned backlight module also comprises second heat-conducting piece, and second heat-conducting piece is connected in the sidewall of second portion.
In one embodiment of this invention, above-mentioned second heat-conducting piece is the single face heat-conducting glue, and the single face heat-conducting glue has the face of pasting, and sticks in the sidewall of second portion.
In one embodiment of this invention, above-mentioned pointolite is a side emitting type pointolite, and lampshade has bottom and sidewall, and the sidewall of lampshade is relative with incidence surface, and first heat-conducting piece is connected in the bottom of lampshade.
In one embodiment of this invention, above-mentioned second portion has bottom and sidewall, and the sidewall and the incidence surface of second portion are relative, and the bottom of second portion is suitable for contacting with the bottom of lampshade.
In one embodiment of this invention, above-mentioned backlight module also comprises second heat-conducting piece, and second heat-conducting piece is connected in the bottom of second portion.
In one embodiment of this invention, above-mentioned second heat-conducting piece is the single face heat-conducting glue, and the single face heat-conducting glue has the face of pasting, and sticks in the bottom of second portion.
In one embodiment of this invention, above-mentioned pointolite is a light emitting diode.
In one embodiment of this invention, the material of above-mentioned heat sink and lampshade comprises metal.
In one embodiment of this invention, when second portion moved and contacts with lampshade, second portion also contacted with first.
The present invention proposes a kind of liquid crystal indicator in addition, and it comprises display panels, aforesaid backlight module and framework, and wherein backlight module is a side that is disposed at display panels.The combination of framework and heat sink is provided with, and with covering liquid LCD panel, LGP and light source cell, and exposes the viewing area of display panels.
In the present invention, because the second portion of heat sink is movably, so after in light source cell is inserted accommodation space, the second portion of adjustable cooling plate is so that the second portion of heat sink has one to contact with lampshade.So, the heat that light sources produces can be passed to heat sink effectively via lampshade, so backlight module of the present invention can improve radiating efficiency.In addition, because backlight module of the present invention has higher radiating efficiency, it can avoid light sources Yin Wendu too high and reduce serviceable life, therefore uses the liquid crystal indicator of this backlight module to have better reliability degree.
For let above and other objects of the present invention, feature and advantage can be more obviously understandable, hereinafter is special lifts preferred embodiment, and conjunction with figs., elaborates as follows.
Description of drawings
Fig. 1 is the synoptic diagram of existing a kind of backlight module.
Fig. 2 A and Fig. 2 B are the synoptic diagram of a kind of liquid crystal indicator of one embodiment of the invention.
Fig. 3 A and Fig. 3 B are the synoptic diagram of a kind of liquid crystal indicator of another embodiment of the present invention.
Wherein, description of reference numerals is following:
100,300: backlight module 110,310: heat sink
112,314b, 332b: sidewall 113,314a, 332a: bottom
120,320: LGP 122,322: incidence surface
124,324: exiting surface 130,330: light source cell
132,332: lampshade 134,334: light sources
134a, 334a: strip substrate 134b: light emitting diode
135,335: light 136: heat-conducting glue
140,370: blooming 150,340: reflector plate
200: liquid crystal indicator 210: display panels
212: viewing area 220: framework
312: first 314: second portion
320: LGP 334b: pointolite
Heat-conducting piece 352,354,362 in 350: the first: paste face
360: the second heat-conducting piece G, H: gap
S1, S2: accommodation space
Embodiment
Fig. 2 A and Fig. 2 B are the synoptic diagram of a kind of liquid crystal indicator of one embodiment of the invention, and wherein Fig. 2 B is the synoptic diagram behind the heat sink location of Fig. 2 A.Please earlier with reference to Fig. 2 A; The liquid crystal indicator 200 of present embodiment comprises display panels 210, framework 220 and backlight module 300; Wherein backlight module 300 is disposed at a side of display panels 210, to provide display panels 210 required area source.This backlight module 300 comprises heat sink 310, LGP 320 and light source cell 330.Heat sink 310 comprises first 312 and second portion 314, and wherein second portion 314 is suitable between a primary importance and a second place, moving.LGP 320 is disposed in the first 312 of heat sink 310, and can be provided with a reflector plate 340 between LGP 320 and the first 312.LGP 320 has adjacent incidence surface 322 and exiting surface 324, and forms accommodation space S2 between the second portion 314 of incidence surface 322 and heat sink 310.In addition, framework 220 is provided with heat sink 310 combinations, with covering liquid LCD panel 210, LGP 320, light source cell 330 and reflector plate 340, and exposes a viewing area 212 of display panels 210.
Hold above-mentionedly, light source cell 330 is drawing out type, and when the second portion 314 of heat sink 310 moved to primary importance (shown in Fig. 2 A), light source cell 330 was suitable for inserting in the accommodation space S2 along predetermined direction (like the Z axle).Light source cell 330 comprises lampshade 332 and the light sources that is connected lampshade 332 334, and wherein light sources 334 comprises the strip substrate 334a that extends along the Z axle and is disposed at a plurality of pointolite 334b (in Fig. 2 A and 2B, only illustrating a pointolite 334b) on the strip substrate 334a.In addition, pointolite 334b is in order to providing light 335 to LGP 320, and LGP 320 is in order to converting light 335 to area source, and area source is exiting surface 324 outgoing from LGP 320.340 of reflector plates are in order to reflection ray 335, so that light 335 penetrates from the exiting surface 324 of LGP 320.In addition, a plurality of bloomings 370 can be set, with the area source homogenising at the exiting surface 324 of LGP 320.Blooming 370 can be diffusion barrier, brightness enhancement film (Brightness Enhancement Film, BEF) etc.
In the present embodiment, heat sink 310 can comprise metal with the material of lampshade 332.In addition, backlight module 300 can also comprise one first heat-conducting piece 350, and it is connected between strip substrate 334a and the lampshade 332.This first heat-conducting piece 350 can be two-sided heat-conducting glue, and it has two and pastes face 352,354, sticks in strip substrate 334a and lampshade 332 respectively.In addition, pointolite 334b for example is a light emitting diode, but not as limit.Pointolite 334b is the top emission type pointolite.Lampshade 332 has bottom 332a and sidewall 332b, and the sidewall 332b of lampshade 332 is relative with the incidence surface 322 of LGP 320, and first heat-conducting piece 350 is connected in the sidewall 332b of lampshade 332.The second portion 314 of heat sink 310 has bottom 314a and sidewall 314b, and the sidewall 314b of second portion 314 is relative with incidence surface 322.
Above-mentioned backlight module 300 can also comprise second heat-conducting piece 360, and it is connected in the sidewall 314b of second portion 314.This second heat-conducting piece 360 is the single face heat-conducting glue, and it has the face of pasting 362, sticks in the sidewall 314b of the second portion 314 of heat sink 310.In addition, after inserting accommodation space S2 in along predetermined direction (being the Z axle) light source cell 330, the second portion 314 of heat sink 310 is suitable for moving to the second place (shown in Fig. 2 B) so that second heat-conducting piece 360 contacts with lampshade 332.
In more detail; Because the second portion 314 of heat sink 310 is movably; So after in light source cell 330 is inserted accommodation space S2; The second portion 314 that can make heat sink 310 moves (promptly moving right along X axis) to the second place (shown in Fig. 2 B) towards the direction near the sidewall 322b of lampshade 332, so that the second portion 314 of heat sink 310 is through second heat-conducting piece 360 and contact with lampshade 332.So; The heat that pointolite 334b is produced; Can be via strip substrate 334a, first heat-conducting piece 350, lampshade 332 and second heat-conducting piece 360 and be passed to the second portion 314 of heat sink 310, so the backlight module 300 of present embodiment has preferable radiating efficiency.In addition; In the present embodiment, when the second portion 314 of heat sink 310 moved to the second place and contacts with lampshade 332, the second portion 314 of heat sink 310 also contacted with the first 312 of heat sink 310; So can increase area of dissipation, with further lifting radiating efficiency.In addition, because the backlight module 300 of present embodiment has preferable radiating efficiency, so can avoid pointolite 334b to produce problems such as luminescence efficiency variation, colour cast and serviceable life shorten because of high temperature.So, help to promote the display quality and the fiduciary level of the liquid crystal indicator 200 of present embodiment.
Please with reference to Fig. 2 B, because present embodiment is to use the single face heat-conducting glue as second heat-conducting piece 360, so, do not stick in second heat-conducting piece 360 though the sidewall 332b of lampshade 332 contacts with second heat-conducting piece 360.In other words; When needing to change when light source cell 330 damages; Can be easily the second portion 314 of heat sink 310 be moved (promptly moving left along X axis) to primary importance (shown in Fig. 2 A) towards the direction away from the sidewall 322b of lampshade 332, to be convenient for changing light source cell 330.
Be noted that though in the present embodiment, the second portion 314 of heat sink 310 contacts with lampshade 332 through second heat-conducting piece 360, in other embodiments, the second portion 314 of heat sink 310 also can directly contact with lampshade 332.That is to say that second heat-conducting piece 360 can omit.
Fig. 3 A and Fig. 3 B are the synoptic diagram of a kind of liquid crystal indicator of another embodiment of the present invention, and wherein Fig. 3 B is the synoptic diagram behind the heat sink location of Fig. 3 A.Please earlier with reference to Fig. 3 A, the liquid crystal indicator 200 ' of present embodiment is similar with advantage with the structure of above-mentioned liquid crystal indicator 200, below only describes to its structural difference place.In the liquid crystal indicator 200 ' of present embodiment; The pointolite 334b ' of the light source cell 334 ' of backlight module 300 ' is a side emitting type pointolite; And first heat-conducting piece 350 is connected in the bottom 332a of lampshade 332, that is light source cell 334 ' is disposed on the bottom 332a of lampshade 332.In addition; The second portion 314 ' of heat sink 310 ' has bottom 314a ' and sidewall 314b '; Wherein the sidewall 314b ' of second portion 314 ' is relative with the incidence surface 322 of LGP 320, and second heat-conducting piece 360 is connected in the bottom 314a ' of the second portion 314 ' of heat sink 310 '.
In the present embodiment, after inserting accommodation space S2 in along predetermined direction (being the Z axle) light source cell 330 ', the second portion 314 of heat sink 310 ' ' be suitable for moving to the second place (shown in Fig. 3 B) is so that second heat-conducting piece 360 contacts with lampshade 332.In more detail; Because the second portion 314 ' of heat sink 310 ' is movably; So after in light source cell 330 ' is inserted accommodation space S2; The second portion 314 ' that can make heat sink 310 ' moves (promptly axially go up along Y and move) towards the direction near the bottom 322a of lampshade 332, so that the second portion 314 ' of heat sink 310 ' contacts (shown in Fig. 3 B) through second heat-conducting piece 360 and with lampshade 332.So; The heat that pointolite 334b ' is produced; Can be via strip substrate 334a, first heat-conducting piece 350, lampshade 332 and second heat-conducting piece 360 and be passed to the second portion 314 ' of heat sink 310 ', so the backlight module 300 ' of present embodiment has preferable radiating efficiency.In addition; In the present embodiment; When the second portion 314 ' of heat sink 310 ' moves to the second place and contacts with lampshade 332; The second portion 314 ' of heat sink 310 ' also contacts with the first 312 ' of heat sink 310 ', so can increase area of dissipation, with further lifting radiating efficiency.
Please with reference to Fig. 3 B, because present embodiment is to use the single face heat-conducting glue as second heat-conducting piece 360, so, do not stick in second heat-conducting piece 360 though the bottom 332a of lampshade 332 contacts with second heat-conducting piece 360.In other words; When needing to change when light source cell 330 ' damage; Can be easily the second portion 314 ' of heat sink 310 ' be moved (promptly axially moving down along Y) to primary importance (shown in Fig. 3 A), to be convenient for changing light source cell 330 ' towards the direction away from the bottom 332a of lampshade 332.
Be noted that though in the present embodiment, the second portion 314 ' of heat sink 310 ' contacts with lampshade 332 through second heat-conducting piece 360, in other embodiments, the second portion 314 ' of heat sink 310 ' also can directly contact with lampshade 332.That is to say that second heat-conducting piece 360 can omit.
In sum, backlight module of the present invention and liquid crystal indicator have advantage at least:
1. because the second portion of the heat sink of backlight module of the present invention is movably; So after in light source cell is inserted accommodation space; The second portion of heat sink is movable to the second place; So that the second portion of heat sink has one to contact with lampshade, and then the heat that lets light sources produce can be passed to heat sink effectively via lampshade.Therefore, backlight module of the present invention can improve radiating efficiency.
2. because backlight module of the present invention has higher radiating efficiency, so can avoid light sources Yin Wendu too high and produce luminescence efficiency variation, colour cast and problem such as shorten serviceable life.Therefore, use the liquid crystal indicator of this backlight module to have better reliability degree.
Though the present invention discloses as above with preferred embodiment; Right its is not in order to limit the present invention; Has common knowledge the knowledgeable in the affiliated technical field; Do not breaking away from the spirit and scope of the present invention, when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the scope that appending claims defines.

Claims (15)

1.一种背光模块，包括：1. A backlight module, comprising: 一散热板，包括一第一部分与一第二部分，且该第二部分适于在一第一位置与一第二位置之间移动；A heat sink includes a first portion and a second portion, and the second portion is adapted to move between a first position and a second position; 一导光板，配置于该散热板的该第一部分上，该导光板具有一入光面，且该入光面与该第二部分之间形成一容置空间；以及a light guide plate, configured on the first part of the heat dissipation plate, the light guide plate has a light incident surface, and an accommodating space is formed between the light incident surface and the second part; and 一光源单元，当该第二部分位于该第一位置时，该光源单元适于沿一预定方向置入该容置空间内，该光源单元包括一灯罩与连接该灯罩的一光源组，当该光源单元沿该预定方向置入该容置空间内后，该第二部分适于移动至该第二位置以与该灯罩接触。A light source unit, when the second part is at the first position, the light source unit is suitable to be placed into the accommodating space along a predetermined direction, the light source unit includes a lampshade and a light source group connected to the lampshade, when the After the light source unit is placed into the accommodating space along the predetermined direction, the second part is adapted to move to the second position to be in contact with the lampshade. 2.如权利要求1所述的背光模块，其中该光源组包括一条状基板以及配置于该条状基板上的多个点光源。2. The backlight module as claimed in claim 1, wherein the light source group comprises a strip-shaped substrate and a plurality of point light sources arranged on the strip-shaped substrate. 3.如权利要求2所述的背光模块，还包括一第一导热件，该第一导热件连接于该条状基板与该灯罩之间。3. The backlight module as claimed in claim 2, further comprising a first heat conduction element, the first heat conduction element is connected between the strip substrate and the lampshade. 4.如权利要求3所述的背光模块，其中该第一导热件为一双面导热胶，且该双面导热胶具有两个黏贴面，所述两个黏贴面分别黏贴于该条状基板与该灯罩。4. The backlight module as claimed in claim 3, wherein the first heat-conducting member is a double-sided heat-conducting adhesive, and the double-sided heat-conducting adhesive has two adhesive surfaces, and the two adhesive surfaces are respectively attached to the The strip substrate and the lampshade. 5.如权利要求3所述的背光模块，其中所述多个点光源为顶部发光型点光源，该灯罩具有一底部与一侧壁，该灯罩的该侧壁与该入光面相对，且该第一导热件连接于该灯罩的该侧壁。5. The backlight module according to claim 3, wherein the plurality of point light sources are top-emission type point light sources, the lampshade has a bottom and a sidewall, the sidewall of the lampshade is opposite to the light-incident surface, and The first heat conducting element is connected to the side wall of the lampshade. 6.如权利要求5所述的背光模块，其中该第二部分具有一底部与一侧壁，该第二部分的该侧壁与该入光面相对，且适于与该灯罩的该侧壁接触。6. The backlight module as claimed in claim 5, wherein the second part has a bottom and a side wall, the side wall of the second part is opposite to the light-incident surface, and is suitable for the side wall of the lampshade touch. 7.如权利要求6所述的背光模块，还包括一第二导热件，该第二导热件连接于该第二部分的该侧壁。7. The backlight module as claimed in claim 6, further comprising a second heat conducting element connected to the side wall of the second portion. 8.如权利要求7所述的背光模块，其中该第二导热件为一单面导热胶，且该单面导热胶具有一黏贴面，黏贴于该第二部分的该侧壁。8. The backlight module as claimed in claim 7, wherein the second heat-conducting member is a single-sided heat-conducting adhesive, and the single-sided heat-conducting adhesive has an adhesive surface, which is adhered to the side wall of the second part. 9.如权利要求3所述的背光模块，其中所述多个点光源为侧边发光型点光源，该灯罩具有一底部与一侧壁，该灯罩的该侧壁与该入光面相对，且该第一导热件连接于该灯罩的该底部。9. The backlight module according to claim 3, wherein the plurality of point light sources are side-emitting point light sources, the lampshade has a bottom and a side wall, the side wall of the lampshade is opposite to the light-incident surface, And the first heat conducting element is connected to the bottom of the lampshade. 10.如权利要求9所述的背光模块，其中该第二部分具有一底部与一侧壁，该第二部分的该侧壁与该入光面相对，且该第二部分的该底部适于与该灯罩的该底部接触。10. The backlight module as claimed in claim 9, wherein the second part has a bottom and a side wall, the side wall of the second part is opposite to the light incident surface, and the bottom of the second part is suitable for contact with the bottom of the lampshade. 11.如权利要求10所述的背光模块，还包括一第二导热件，该第二导热件连接于该第二部分的该底部。11. The backlight module as claimed in claim 10, further comprising a second heat conducting element connected to the bottom of the second part. 12.如权利要求11所述的背光模块，其中该第二导热件为一单面导热胶，且该单面导热胶具有一黏贴面，该黏贴面黏贴于该第二部分的该底部。12. The backlight module as claimed in claim 11, wherein the second heat conducting member is a single-sided heat-conducting adhesive, and the single-sided heat-conducting adhesive has an adhesive surface, and the adhesive surface is adhered to the second part. bottom. 13.如权利要求2所述的背光模块，其中所述多个点光源为发光二极管。13. The backlight module as claimed in claim 2, wherein the plurality of point light sources are light emitting diodes. 14.如权利要求1所述的背光模块，其中该散热板与该灯罩的材质包括金属。14. The backlight module as claimed in claim 1, wherein the heat sink plate and the lampshade are made of metal. 15.一种液晶显示装置，包括：15. A liquid crystal display device, comprising: 一液晶显示面板；a liquid crystal display panel; 一如权利要求1-14中任一项所述的背光模块，配置于该液晶显示面板的一侧；以及A backlight module according to any one of claims 1-14, configured on one side of the liquid crystal display panel; and 一框架，与该散热板组合设置，以包覆该液晶显示面板、该导光板以及该光源单元，并暴露出该液晶显示面板的一显示区域。A frame is combined with the cooling plate to cover the liquid crystal display panel, the light guide plate and the light source unit, and expose a display area of the liquid crystal display panel.
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