TWI444722B - Back light module and display device - Google Patents

Back light module and display device Download PDF

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TWI444722B
TWI444722B TW100119292A TW100119292A TWI444722B TW I444722 B TWI444722 B TW I444722B TW 100119292 A TW100119292 A TW 100119292A TW 100119292 A TW100119292 A TW 100119292A TW I444722 B TWI444722 B TW I444722B
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reflective sheet
backlight module
frame
opening
sheet
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TW100119292A
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Chinese (zh)
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TW201250345A (en
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Yuan Yu Chien
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Au Optronics Corp
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Priority to CN 201110222417 priority patent/CN102410471B/en
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Publication of TWI444722B publication Critical patent/TWI444722B/en

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Description

背光模組及顯示裝置Backlight module and display device

本發明係關於一種背光模組及顯示裝置。The invention relates to a backlight module and a display device.

隨著電子產品朝輕薄短小的方向發展,液晶顯示裝置由於具備輕薄與省電的優點,而被大量的應用於筆記型電腦、個人數位助理器(Personal Digital Assistant,PDA)、數位相機、攝錄影機、行動電話、掌上型遊戲機等各種電子產品中。With the development of electronic products in the direction of lightness and thinness, liquid crystal display devices have been widely used in notebook computers, personal digital assistants (PDAs), digital cameras, and video recordings because of their advantages of lightness and power saving. Among various electronic products such as video players, mobile phones, and handheld game consoles.

由於液晶顯示裝置的液晶顯示面板不具發光特性,因此,液晶顯示裝置需包括一面光源,例如:背光模組,以提供充分且均勻的光線予液晶顯示裝置面板。依據背光源的不同位置的配置,背光模組可分為側向式背光模組和直下式背光模組。側向式背光模組包括一導光板、一反射片、一光源與一框體,導光板配置於反射片上方,光源配置於導光板之一側邊,導光板、反射片與光源設置於於框體內。Since the liquid crystal display panel of the liquid crystal display device does not have a light emitting property, the liquid crystal display device needs to include a light source such as a backlight module to provide sufficient and uniform light to the liquid crystal display device panel. According to the configuration of different positions of the backlight, the backlight module can be divided into a lateral backlight module and a direct backlight module. The lateral backlight module includes a light guide plate, a reflective sheet, a light source and a frame. The light guide plate is disposed above the reflective sheet. The light source is disposed on one side of the light guide plate, and the light guide plate, the reflective sheet and the light source are disposed on the light guide plate. Inside the frame.

然而,為了因應電子產品朝輕薄短小的方向發展,框體可具有一開口,使得側向式背光模組的重量減輕。雖然側向式背光模組可藉由框體具有開口而減少側向式背光模組的重量,但由於反射片實質上並非將所有入射於反射片的光線完全反射,使得未被反射片反射的光線自框體的開口離開側向式背光模組,造成光源所發出的光線無法被側向式背光模組有效利用的問題。However, in order to cope with the development of the electronic product in a light, thin and short direction, the frame body may have an opening, so that the weight of the lateral backlight module is reduced. Although the lateral backlight module can reduce the weight of the lateral backlight module by having an opening in the frame, since the reflective sheet does not completely reflect all the light incident on the reflective sheet, the reflective sheet is not reflected by the reflective sheet. The light leaves the lateral backlight module from the opening of the frame, which causes the light emitted by the light source to be effectively used by the lateral backlight module.

本發明提供一種背光模組及顯示裝置,藉以解決先前技術所存在的問題。The invention provides a backlight module and a display device, thereby solving the problems existing in the prior art.

依據本發明所揭露之背光模組的一實施例,背光模組包含一框體、一第一反射片與一第二反射片。其中,框體具有一開口,第一反射片設置於框體上並完全覆蓋開口,第二反射片設置於第一反射片之下。According to an embodiment of the backlight module of the present invention, the backlight module includes a frame, a first reflective sheet and a second reflective sheet. The frame has an opening, the first reflective sheet is disposed on the frame and completely covers the opening, and the second reflective sheet is disposed under the first reflective sheet.

依據本發明所揭露之顯示裝置的一實施例,顯示裝置包含一顯示面板與一背光模組。其中,顯示面板具有一可視區,背光模組包含一框體、一第一反射片與一第二反射片,框體具有一開口。開口係對應可視區設置,第一反射片設置於框體上並完全覆蓋開口,第二反射片設置於第一反射片之下。According to an embodiment of the display device of the present invention, the display device includes a display panel and a backlight module. The display panel has a visible area, and the backlight module comprises a frame, a first reflective sheet and a second reflective sheet, and the frame has an opening. The opening is corresponding to the visible area, the first reflective sheet is disposed on the frame and completely covers the opening, and the second reflective sheet is disposed under the first reflective sheet.

依據本發明所揭露之背光模組與顯示裝置,可藉由開口的設計,減輕背光模組的重量。可藉由第二反射片的設計,提升光線的使用率,進而提升背光模組的亮度。According to the backlight module and the display device disclosed in the present invention, the weight of the backlight module can be reduced by the design of the opening. The design of the second reflective sheet can improve the utilization rate of the light, thereby improving the brightness of the backlight module.

以上關於本發明的內容說明及以下之實施方式的說明係用以示範及解釋本發明的精神及原理,並且提供本發明的專利申請範圍更進一步的解釋。The above description of the present invention and the following description of the embodiments are intended to illustrate and explain the spirit and principles of the invention, and to provide a further explanation of the scope of the invention.

請參照「第1圖」與「第2圖」,係分別為依據本發明所揭露之顯示裝置的第一實施例的立體與剖面結構示意圖。顯示裝置100包含顯示面板50與背光模組60。顯示面板50具有可視區52,其中可視區52係為顯示裝置100用以顯示畫面的區域。背光模組60包含框體62、第一反射片64與第二反射片66。在本實施例中,背光模組60可為側向式背光模組,框體62的材質可為但不限於金屬,第一反射片64與第二反射片66可具有相同的材質,例如但不限於第一反射片64與第二反射片66皆可為但不限於反射片型號代號E6SR188,但本實施例並非用以限定本發明。換句話說,框體62的材質可為但不限於塑膠,第一反射片64與第二反射片66可具有不同的材質,例如但不限於第一反射片64可為但不限於反射片型號代號E6Z,第二反射片66可為但不限於反射片型號代號UX188,可依據實際需求進行調整。Please refer to FIG. 1 and FIG. 2, which are schematic perspective and cross-sectional views, respectively, of a first embodiment of a display device according to the present invention. The display device 100 includes a display panel 50 and a backlight module 60. The display panel 50 has a viewable area 52, which is an area in which the display device 100 is used to display a picture. The backlight module 60 includes a frame 62, a first reflection sheet 64, and a second reflection sheet 66. In this embodiment, the backlight module 60 can be a lateral backlight module. The material of the frame 62 can be, but not limited to, metal. The first reflective sheet 64 and the second reflective sheet 66 can have the same material, for example, Not limited to the first reflective sheet 64 and the second reflective sheet 66, but not limited to the reflective sheet type code E6SR188, this embodiment is not intended to limit the present invention. In other words, the material of the frame 62 can be, but not limited to, plastic. The first reflective sheet 64 and the second reflective sheet 66 can have different materials. For example, but not limited to, the first reflective sheet 64 can be, but not limited to, a reflective sheet type. The code E6Z, the second reflection sheet 66 can be, but not limited to, the reflection sheet type code UX188, which can be adjusted according to actual needs.

其中,背光模組60另包含光源70與導光板72,導光板72包括入光面74、透射面76與出光面78,光源70配置於入光面74,第一反射片64配置於透射面76,顯示面板50配置於出光面78。其中,光源70可為但不限於發光二極體(Light-Emitting Diode,LED),光源70的數量可為但不限於十個(由於「第2圖」係為顯示裝置100的剖面結構示意圖,故圖式中僅繪製出一個發光二極體)。也就是說,光源70亦可為冷陰極螢光管,光源70的數量亦可為二個可依據實際需求進行調整。The backlight module 60 further includes a light source 70 and a light guide plate 72. The light guide plate 72 includes a light incident surface 74, a transmission surface 76 and a light exit surface 78. The light source 70 is disposed on the light incident surface 74, and the first reflective sheet 64 is disposed on the transmission surface. 76. The display panel 50 is disposed on the light emitting surface 78. The light source 70 can be, but not limited to, a Light-Emitting Diode (LED). The number of the light sources 70 can be, but is not limited to, ten (since FIG. 2 is a schematic cross-sectional structure of the display device 100). Therefore, only one light-emitting diode is drawn in the drawing). That is to say, the light source 70 can also be a cold cathode fluorescent tube, and the number of the light sources 70 can also be two, which can be adjusted according to actual needs.

在本實施例中,框體62具有開口68,且開口68係對應可視區52設置。第一反射片64設置於框體62上並完全覆蓋開口68,第二反射片66設置於第一反射片64之下。其中,背光模組60更包含膠帶20,膠帶20介於第一反射片64與第二反射片66之間,且設置第二反射片66的邊緣。此外,在本實施例中,開口68的面積可大於可視區52的面積且第二反射片66的面積可等於開口68的面積,但本實施例並非用以限定本發明。也就是說,開口68的面積亦可等於或小於可視區52的面積,第二反射片66的面積亦可小於或等於開口68的面積。需注意的是,當開口68面積小於可視區52的面積或膠帶20配置於第一反射面64與可視區52相對應的面積上時,因部分光線無法被第二反射片66反射而自出光面78射出,進而降低背光模組60的光線使用率且影響背光模組60的出光均勻度。In the present embodiment, the frame 62 has an opening 68, and the opening 68 is disposed corresponding to the viewable area 52. The first reflective sheet 64 is disposed on the frame 62 and completely covers the opening 68. The second reflective sheet 66 is disposed under the first reflective sheet 64. The backlight module 60 further includes an adhesive tape 20 interposed between the first reflective sheet 64 and the second reflective sheet 66 and disposed at an edge of the second reflective sheet 66. Moreover, in the present embodiment, the area of the opening 68 may be larger than the area of the visible area 52 and the area of the second reflective sheet 66 may be equal to the area of the opening 68, but this embodiment is not intended to limit the present invention. That is, the area of the opening 68 may also be equal to or smaller than the area of the visible area 52, and the area of the second reflective sheet 66 may also be smaller than or equal to the area of the opening 68. It should be noted that when the area of the opening 68 is smaller than the area of the visible area 52 or the tape 20 is disposed on the area corresponding to the visible area 64 and the visible area 52, the partial light cannot be reflected by the second reflective sheet 66 to emit light. The surface 78 is emitted, thereby reducing the light usage of the backlight module 60 and affecting the uniformity of the light output of the backlight module 60.

在本實施例中,光源70所發出的光線(未繪製)入射導光板72後,一部分的光線被導光板72引導自出光面78射出。另一部分光線穿透透射面76至第一反射片64,第一反射片64將大部分入射於第一反射片64的光線反射並穿透導光板72而貞出光面78射出。第二反射片66將未被第一反射片64反射的光線反射並穿透第一反射片64與導光板72而自出光面78射出。因此,背光模組60可藉由第二反射片66的配置,有效地使用光源70所發出的光線,進而提昇亮度。In the present embodiment, after the light (not drawn) emitted by the light source 70 enters the light guide plate 72, a part of the light is guided by the light guide plate 72 to be emitted from the light exit surface 78. Another portion of the light penetrates the transmissive surface 76 to the first reflective sheet 64. The first reflective sheet 64 reflects most of the light incident on the first reflective sheet 64 and penetrates the light guide plate 72 to be emitted from the light exit surface 78. The second reflection sheet 66 reflects the light that is not reflected by the first reflection sheet 64 and penetrates the first reflection sheet 64 and the light guide plate 72 to be emitted from the light exit surface 78. Therefore, the backlight module 60 can effectively use the light emitted by the light source 70 by the configuration of the second reflection sheet 66, thereby improving the brightness.

以下針對上述第一實施例的進行實驗。請參照「表2」,係為背光模組60包括與不包括第二反射片66分別於量測五點與十三點的平均出光亮度與相對亮度百分比。其中,出光亮度係為單位面積的發光強度,單位為尼特(nit);相對亮度百分比係以背光模組60不包括第二反射片66的出光亮度為基準的相對亮度。The experiment was conducted below for the first embodiment described above. Please refer to "Table 2" for the average brightness and relative brightness percentage of the backlight module 60 including and not including the second reflection sheet 66 for measuring five points and thirteen points, respectively. The brightness of the light is the luminous intensity per unit area, and the unit is nit. The relative brightness percentage is the relative brightness based on the brightness of the light emitted by the backlight module 60 not including the second reflection sheet 66.

從「表2」可知,不論量測五點或十三點的出光亮度,背光模組60包括第二反射片66的平均出光亮度大於背光模組60不包括第二反射片66的平均出光亮度。其中,背光模組60有無包括第二反射片66的相對亮度百分比相差約略接近百分之五,因此,在相同的出光亮度考量之下,背光模組60可將光源70換成發光效率低的光源(例如:發光二極體的發光等級下降一級)或減少光源70的數量(例如:減少發光二極體的數量並調整相鄰二發光二極體之間的距離)。It can be seen from "Table 2" that the average light-emitting brightness of the backlight module 60 including the second reflection sheet 66 is greater than the average light-emitting brightness of the backlight module 60 not including the second reflection sheet 66, regardless of the brightness of the five-point or thirteen-point light. . Wherein, the backlight module 60 has a relative brightness percentage including the second reflection sheet 66 that is slightly different by about five percent. Therefore, under the same illumination brightness consideration, the backlight module 60 can replace the light source 70 with low luminous efficiency. The light source (for example, the illumination level of the light-emitting diode is lowered by one step) or the number of the light sources 70 is reduced (for example, the number of light-emitting diodes is reduced and the distance between adjacent two light-emitting diodes is adjusted).

請參照「第3圖」,係為依據本發明所揭露之顯示裝置的第二實施例的剖面結構示意圖。在本實施例中,背光模組60除了包括光源70、導光板72、具有開口68的框體62、第一反射片64與第二反射片66外,背光模組66更包含黏著層30。黏著層30介於第一反射片64與第二反射片66之間,且覆蓋第二反射片66面對第一反射片64的表面。在本實施例中,黏著層30可覆蓋於全部第二反射片66面對第一反射片64的表面,但本實施例並非用以限定本發明。也就是說,黏著層30亦可覆蓋於部分第二反射片66面對第一反射片64的表面,可依據實際需求進行調整。其中,第一反射片64與第二反射片66的材質可為但不限於乙烯對苯二甲酸酯(Polyethylene terephthalate,PET)或聚丙烯(Polypropylene,PP),黏著層30的折射率可等於第二反射片66的折射率。由於乙烯對苯二甲酸酯的折射率實質上可為1.57,聚丙烯的折射率實質上可為1.49,使得黏著層30的材料可為但不限於山太士股份有限公司製品名為RD160或RD161的高折射率寡聚物(oligomer),其中RD160的折射率實質上可為1.60,RD161的折射率實質上可為1.61,可依據實際需求進行調整。當黏著層30的折射率可等於第二反射片66的折射率時,可降低光線於第一反射片64與第二反射片66之間所造成的損失。Please refer to FIG. 3, which is a schematic cross-sectional view of a second embodiment of a display device according to the present invention. In the embodiment, the backlight module 60 includes the light source 70, the light guide plate 72, the frame 62 having the opening 68, the first reflection sheet 64 and the second reflection sheet 66, and the backlight module 66 further includes an adhesive layer 30. The adhesive layer 30 is interposed between the first reflective sheet 64 and the second reflective sheet 66 and covers the surface of the second reflective sheet 66 facing the first reflective sheet 64. In the present embodiment, the adhesive layer 30 may cover all of the second reflective sheets 66 facing the surface of the first reflective sheet 64, but this embodiment is not intended to limit the present invention. That is to say, the adhesive layer 30 can also cover the surface of the second reflective sheet 66 facing the first reflective sheet 64, which can be adjusted according to actual needs. The material of the first reflective sheet 64 and the second reflective sheet 66 may be, but not limited to, polyethylene terephthalate (PET) or polypropylene (PP), and the refractive index of the adhesive layer 30 may be equal to The refractive index of the second reflection sheet 66. Since the refractive index of the ethylene terephthalate can be substantially 1.57, the refractive index of the polypropylene can be substantially 1.49, so that the material of the adhesive layer 30 can be, but not limited to, the name of SHAN 160. The high refractive index oligomer (RDGomer) of RD161, wherein the refractive index of RD160 can be substantially 1.60, and the refractive index of RD161 can be substantially 1.61, which can be adjusted according to actual needs. When the refractive index of the adhesive layer 30 can be equal to the refractive index of the second reflective sheet 66, the loss caused by the light between the first reflective sheet 64 and the second reflective sheet 66 can be reduced.

請參照「第4圖」,係為依據本發明所揭露之顯示裝置的第三實施例的剖面結構示意圖。在本實施例中,背光模組60包括光源70、導光板72、具有開口68的框體62、第一反射片64與第二反射片66,框體62更包含第一承載部40與第二承載部42。第一承載部40用以承載第一反射片64,第二承載部42用以承載第二反射片66。其中,第一反射片64與第二反射片66可分別利用膠帶固定於第一承載部40與第二承載部42上(第一反射片64與第二反射片66之間為空氣),但本實施例並非用以限定本發明。也就是說,第一反射片64可利用黏貼方式固定於第一承載部40上,第二反射片66可利用第二實施例的黏著層30固定於第一反射片64與第二承載部42之間(請參照「第5圖」,係為依據本發明所揭露之顯示裝置的第四實施例的剖面結構示意圖)。其中,黏著層30的折射率可等於第二反射片66的折射率。Please refer to FIG. 4, which is a cross-sectional structural view of a third embodiment of a display device according to the present invention. In this embodiment, the backlight module 60 includes a light source 70, a light guide plate 72, a frame 62 having an opening 68, a first reflection sheet 64 and a second reflection sheet 66. The frame body 62 further includes a first carrier portion 40 and a portion Two carrying portions 42. The first carrying portion 40 is configured to carry the first reflective sheet 64 , and the second carrying portion 42 is configured to carry the second reflective sheet 66 . The first reflective sheet 64 and the second reflective sheet 66 are respectively fixed on the first carrying portion 40 and the second carrying portion 42 by using an adhesive tape (air between the first reflective sheet 64 and the second reflective sheet 66), but This embodiment is not intended to limit the invention. That is, the first reflective sheet 64 can be fixed to the first carrying portion 40 by means of adhesive bonding, and the second reflective sheet 66 can be fixed to the first reflective sheet 64 and the second carrying portion 42 by the adhesive layer 30 of the second embodiment. (Please refer to FIG. 5, which is a schematic cross-sectional view of a fourth embodiment of the display device according to the present invention). The refractive index of the adhesive layer 30 may be equal to the refractive index of the second reflective sheet 66.

請參照「第6圖」,係為依據本發明所揭露之顯示裝置的第五實施例的剖面結構示意圖。在本實施例中,背光模組60包括光源70、導光板72、具有開口68的框體62、第一反射片64與第二反射片66,框體62更包含第一承載部40,第一承載部40的相對二側邊包含但不限於二凹槽44。第一承載部40用以承載第一反射片64,第二反射片66的邊緣係夾設於二凹槽44之間。其中,第一反射片64利用膠帶20或框體62的固定結構(未繪製)固定於第一承載部40上。第二反射片66可藉由但不限於黏貼的方式將第二反射片66固定於二凹槽44內。Please refer to FIG. 6 , which is a cross-sectional structural view of a fifth embodiment of a display device according to the present invention. In this embodiment, the backlight module 60 includes a light source 70, a light guide plate 72, a frame 62 having an opening 68, a first reflection sheet 64 and a second reflection sheet 66, and the frame body 62 further includes a first bearing portion 40, The opposite sides of a carrier 40 include, but are not limited to, two recesses 44. The first carrying portion 40 is configured to carry the first reflective sheet 64, and the edge of the second reflective sheet 66 is sandwiched between the two recesses 44. The first reflection sheet 64 is fixed to the first carrier portion 40 by a fixing structure (not drawn) of the tape 20 or the frame 62. The second reflective sheet 66 can fix the second reflective sheet 66 in the two recesses 44 by way of, but not limited to, adhesive bonding.

請參照「第7圖」,係為依據本發明所揭露之顯示裝置的第六實施例的剖面結構示意圖。在本實施例中,背光模組60除了包括光源70、導光板72、具有開口68的框體62、第一反射片64與第二反射片66之外,背光模組66更包含第三反射片90,第三反射片90用以連接第一反射片64與第二反射片66。此外,框體62包含外表面25與側表面26,側表面26具有缺口27,第三反射片90係穿過缺口27並包覆部分側表面26以及部份外表面25,以連接第一反射片64與第二反射片66。其中,第一反射片64利用膠帶20或框體62的固定結構(未繪製)固定於框體62上,第二反射片66可利用黏著層30貼附於第一反射片64,黏著層30的折射率可等於第二反射片66的折射率,但本實施例並非用以限定本發明。也就是說,第一反射片64、第二反射片66與第三反射片90皆可利用膠帶20固定於框體62上,使得第一反射片64與第二反射片66之間具有空氣(請參照「第8圖」,係為依據本發明所揭露之顯示裝置的第七實施例的剖面結構示意圖)。Please refer to FIG. 7 for a cross-sectional structural view of a sixth embodiment of a display device according to the present invention. In this embodiment, the backlight module 60 includes a light source 70, a light guide plate 72, a frame 62 having an opening 68, a first reflection sheet 64 and a second reflection sheet 66, and the backlight module 66 further includes a third reflection. The sheet 90 and the third reflecting sheet 90 are used to connect the first reflecting sheet 64 and the second reflecting sheet 66. In addition, the frame 62 includes an outer surface 25 and a side surface 26, and the side surface 26 has a notch 27 through which the third reflective sheet 90 passes and covers a portion of the side surface 26 and a portion of the outer surface 25 to connect the first reflection Sheet 64 and second reflective sheet 66. The first reflective sheet 64 is fixed to the frame 62 by the fixing structure (not drawn) of the tape 20 or the frame 62. The second reflective sheet 66 can be attached to the first reflective sheet 64 by the adhesive layer 30, and the adhesive layer 30 is adhered. The refractive index may be equal to the refractive index of the second reflective sheet 66, but this embodiment is not intended to limit the invention. That is, the first reflective sheet 64, the second reflective sheet 66, and the third reflective sheet 90 can be fixed to the frame 62 by the tape 20 such that air is present between the first reflective sheet 64 and the second reflective sheet 66 ( Please refer to FIG. 8 for a cross-sectional structural view of a seventh embodiment of a display device according to the present invention.

請參照「第9圖」,係為依據本發明所揭露之顯示裝置的第八實施例的剖面結構示意圖。在本實施例中,背光模組60包括光源70、導光板72、具有開口68的框體62、第一反射片64、第二反射片66與用以連接第一反射片64與第二反射片66的第三反射片90。此外,框體62包含側表面26,側表面26具有二缺口27。第三反射片90係穿過其中一缺口27,以包覆部分側表面26,並由另一缺口27反折至框體62內。其中,第二反射片66可利用黏著層30貼附於第一反射片64,且利用膠帶20或框體62的固定結構(未繪製)固定第一反射片64與第二反射片66,黏著層30的折射率可等於第二反射片66的折射率。Please refer to FIG. 9 for a cross-sectional structural view of an eighth embodiment of a display device according to the present invention. In this embodiment, the backlight module 60 includes a light source 70, a light guide plate 72, a frame 62 having an opening 68, a first reflection sheet 64, and a second reflection sheet 66 for connecting the first reflection sheet 64 and the second reflection. The third reflective sheet 90 of the sheet 66. Furthermore, the frame 62 comprises a side surface 26 having two notches 27. The third reflective sheet 90 passes through one of the notches 27 to cover a portion of the side surface 26 and is folded back into the frame 62 by another notch 27. The second reflective sheet 66 can be attached to the first reflective sheet 64 by using the adhesive layer 30, and the first reflective sheet 64 and the second reflective sheet 66 are fixed by the fixing structure (not drawn) of the adhesive tape 20 or the frame 62. The refractive index of layer 30 can be equal to the refractive index of second reflective sheet 66.

上述第六實施例至第八實施例中,背光模組66的第一反射片64、第二反射片66與第三反射片90係為獨立的三反射片,但這些實施例並非用以限定本發明。也就是說,背光模組66所包括的第一反射片64、第二反射片66與第三反射片90可整合為一反射片,可依據實際需求進行調整。In the sixth embodiment to the eighth embodiment, the first reflective sheet 64, the second reflective sheet 66 and the third reflective sheet 90 of the backlight module 66 are independent three-reflecting sheets, but these embodiments are not limited thereto. this invention. That is to say, the first reflective sheet 64, the second reflective sheet 66 and the third reflective sheet 90 included in the backlight module 66 can be integrated into a reflective sheet, which can be adjusted according to actual needs.

依據本發明所揭露之背光模組與顯示裝置,可藉由開口的設計,減輕背光模組的重量。可藉由第二反射片的設計,提升光線的使用率,進而提升背光模組的亮度。According to the backlight module and the display device disclosed in the present invention, the weight of the backlight module can be reduced by the design of the opening. The design of the second reflective sheet can improve the utilization rate of the light, thereby improving the brightness of the backlight module.

雖然本發明以前述的較佳實施例揭露如上,然其並非用以限定本發明,任何熟習相像技藝者,在不脫離本發明的精神和範圍內,當可作些許的更動與潤飾,因此本發明的專利保護範圍須視本說明書所附的申請專利範圍所界定者為準。While the present invention has been described above in terms of the preferred embodiments thereof, it is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The scope of patent protection of the invention is subject to the definition of the scope of the patent application attached to this specification.

20...膠帶20. . . tape

25...外表面25. . . The outer surface

26...側表面26. . . Side surface

27...缺口27. . . gap

30...黏著層30. . . Adhesive layer

40...第一承載部40. . . First carrier

42...第二承載部42. . . Second carrier

44...凹槽44. . . Groove

50...顯示面板50. . . Display panel

52...可視區52. . . Visual area

60...背光模組60. . . Backlight module

62...框體62. . . framework

64...第一反射片64. . . First reflection sheet

66...第二反射片66. . . Second reflection sheet

68...開口68. . . Opening

70...光源70. . . light source

72...導光板72. . . Light guide

74...入光面74. . . Glossy surface

76...透射面76. . . Transmissive surface

78...出光面78. . . Glossy surface

90...第三反射片90. . . Third reflection sheet

100...顯示裝置100. . . Display device

第1圖係為依據本發明所揭露之顯示裝置的第一實施例的立體結構示意圖。1 is a perspective structural view of a first embodiment of a display device according to the present invention.

第2圖係為依據本發明所揭露之顯示裝置的第一實施例的剖面結構示意圖。2 is a schematic cross-sectional view showing a first embodiment of a display device according to the present invention.

第3圖係為依據本發明所揭露之顯示裝置的第二實施例的剖面結構示意圖。3 is a schematic cross-sectional view showing a second embodiment of a display device according to the present invention.

第4圖係為依據本發明所揭露之顯示裝置的第三實施例的剖面結構示意圖。4 is a schematic cross-sectional view showing a third embodiment of a display device according to the present invention.

第5圖係為依據本發明所揭露之顯示裝置的第四實施例的剖面結構示意圖。Figure 5 is a schematic cross-sectional view showing a fourth embodiment of a display device according to the present invention.

第6圖係為依據本發明所揭露之顯示裝置的第五實施例的剖面結構示意圖。Figure 6 is a cross-sectional structural view showing a fifth embodiment of the display device according to the present invention.

第7圖係為依據本發明所揭露之顯示裝置的第六實施例的剖面結構示意圖。Figure 7 is a cross-sectional structural view showing a sixth embodiment of the display device according to the present invention.

第8圖係為依據本發明所揭露之顯示裝置的第七實施例的剖面結構示意圖。Figure 8 is a schematic cross-sectional view showing a seventh embodiment of a display device according to the present invention.

第9圖係為依據本發明所揭露之顯示裝置的第八實施例的剖面結構示意圖。Figure 9 is a schematic cross-sectional view showing an eighth embodiment of a display device according to the present invention.

20...膠帶20. . . tape

50...顯示面板50. . . Display panel

52...可視區52. . . Visual area

60...背光模組60. . . Backlight module

62...框體62. . . framework

64...第一反射片64. . . First reflection sheet

66...第二反射片66. . . Second reflection sheet

68...開口68. . . Opening

70...光源70. . . light source

72...導光板72. . . Light guide

74...入光面74. . . Glossy surface

76...透射面76. . . Transmissive surface

78...出光面78. . . Glossy surface

100...顯示裝置100. . . Display device

Claims (12)

一種背光模組,包含:一框體,具有一開口;一第一反射片,設置於該框體上並完全覆蓋該開口;以及一第二反射片,設置於該第一反射片之下,該第二反射片的面積小於或等於該開口的面積。 A backlight module includes: a frame having an opening; a first reflective sheet disposed on the frame and completely covering the opening; and a second reflective sheet disposed under the first reflective sheet The area of the second reflective sheet is less than or equal to the area of the opening. 如請求項1所述之背光模組,其中該背光模組更包含一膠帶,該膠帶介於該第一反射片與第二反射片之間,且設置該第二反射片的邊緣。 The backlight module of claim 1, wherein the backlight module further comprises a tape interposed between the first reflective sheet and the second reflective sheet, and an edge of the second reflective sheet is disposed. 如請求項1所述之背光模組,其中該背光模組更包含一黏著層,該黏著層介於於該第一反射片與第二反射片之間,且覆蓋該第二反射片面對該第一反射片的表面,其中該黏著層的折射率等於該第二反射片折射率。 The backlight module of claim 1, wherein the backlight module further comprises an adhesive layer interposed between the first reflective sheet and the second reflective sheet, and covering the second reflective sheet facing a surface of the first reflective sheet, wherein a refractive index of the adhesive layer is equal to a refractive index of the second reflective sheet. 如請求項1所述之背光模組,其中該框體包含一第一承載部,用以承載該第一反射片。 The backlight module of claim 1, wherein the frame comprises a first carrying portion for carrying the first reflective sheet. 如請求項4所述之背光模組,其中該框體更包含一第二承載部,用以承載該第二反射片。 The backlight module of claim 4, wherein the frame further comprises a second carrying portion for carrying the second reflective sheet. 如請求項4所述之背光模組,其中該第一承載部的相對二側邊包含多個凹槽,該第二反射片的邊緣係夾設於該些凹槽之間。 The backlight module of claim 4, wherein the opposite sides of the first carrying portion comprise a plurality of grooves, and an edge of the second reflecting sheet is sandwiched between the grooves. 如請求項1所述之背光模組,其中該背光模組更包含一第三反射片,用以連接該第一反射片與該第二反射片。 The backlight module of claim 1, wherein the backlight module further comprises a third reflective sheet for connecting the first reflective sheet and the second reflective sheet. 如請求項7所述之背光模組,其中該框體包含一外表面與一側 表面,該側表面具有一缺口,該第三反射片係穿過該缺口並包覆部分該側表面以及部份該外表面。 The backlight module of claim 7, wherein the frame comprises an outer surface and a side The surface has a notch, and the third reflective sheet passes through the notch and covers a portion of the side surface and a portion of the outer surface. 如請求項7所述之背光模組,其中該框體包含一側表面,該側表面具有二缺口,該第三反射片係穿過該二缺口之其中一缺口,以包覆部分該側表面,並由該二缺口之另一缺口反折至該框體內。 The backlight module of claim 7, wherein the frame comprises a side surface having two notches, and the third reflective sheet passes through one of the notches to cover a portion of the side surface And reversing into the frame by another gap of the two notches. 如請求項1所述之背光模組,其中該第一反射片與該第二反射片具有相同的材質。 The backlight module of claim 1, wherein the first reflective sheet and the second reflective sheet have the same material. 一種顯示裝置,包含:一顯示面板,具有一可視區;以及一背光模組,包含:一框體,具有一開口,該開口係對應該可視區設置;一第一反射片,設置於該框體上並完全覆蓋該開口;以及一第二反射片,設置於該第一反射片之下,該第二反射片的面積小於或等於該開口面積。 A display device comprising: a display panel having a visible area; and a backlight module comprising: a frame having an opening, the opening being disposed corresponding to the visible area; and a first reflective sheet disposed on the frame The opening is completely covered by the body; and a second reflective sheet is disposed under the first reflective sheet, and the area of the second reflective sheet is less than or equal to the opening area. 如請求項11所述之顯示裝置,其中該開口的面積大於或等於該可視區的面積。 The display device of claim 11, wherein the area of the opening is greater than or equal to the area of the viewable area.
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