TWM410896U - Backlight module - Google Patents

Abstract

A backlight module includes a back cover, a light guide plate, a light source set, a optical film set and a frame. The back cover includes a first body unit, a second body unit and a fixing element. The first body unit has a first carrying portion, a first curve guiding groove having an opening and a first side portion. The second body unit has a second carrying portion, a second curve guiding groove disposed corresponding to the opening and a second side portion. The fixing element is disposed through the first and the second curve guiding grooves to fix the opposite position between the first and the second body units. The light guide plate is disposed on the first and the second carrying portions. The light source set is disposed on the first carrying portion and located between the first side portion and the light guide plate. The optical film set is disposed on the light guide plate. The frame is fixed on the back cover and located above the optical film set.

Description

M410896 V. New description: [New technology field] This creation is about a light source module and especially related to the backHght module. [Prior Art] With the development of the electronics industry, flat panel displays have gradually replaced cathode ray f-displays as the current mainstream of displays, and the technology of liquid crystal display is more sophisticated and popular. Since the liquid crystal display panel of the liquid crystal display itself cannot emit light, a backlight module is provided under the liquid crystal display panel as a display light source of the liquid crystal display panel. The conventional backlight module is composed of a back frame, a light guide plate, a light source, a reflection sheet, an optical film, and a plastic frame, wherein the back frame is composed of a bottom plate and a side plate. The light guide plate has a light emitting surface, a bottom surface with respect to the light emitting surface, and a light incident side surface connecting the light emitting surface and the bottom surface. The bottom surface of the light guide plate faces the bottom plate of the back frame, and the light incident side of the light guide plate faces the side plate of the back frame. The reflective sheet is disposed between the bottom surface of the light guide plate and the bottom plate of the back frame. The plastic frame is disposed on the edge of the back frame and the edge of the light guide plate. The light source is disposed beside the light incident side of the light guide plate. In the light source of the backlight module, in addition to a cold cathode fluorescent lamp (CCFL), a light emitting diode (LED) is generally used, which has high brightness and power. Low consumption, long service life, and slight thermal problems. M410896 In general, the assembly sequence of the backlight module is to provide the back frame, the reflective sheet, the light guide plate, the light source, the optical film, and the plastic frame to complete the assembly of the backlight module. That is to say, the backlight module must be assembled after the light source is completed before the optical film assembly can be continued. Therefore, when the light source is damaged, the entire (four) light-remaining members must be dismantled in order to repair the light source in the order opposite to the assembly order. Therefore, it takes a lot of time to disassemble the backlight module, and it is easy to cause damage to components such as optical films, light guide plates, and reflection sheets during disassembly, or to increase the chance of foreign matter invading between optical films. . Furthermore, when the repair is completed, each component is reassembled, so that the maintenance of the backlight module is inefficient. [New Plastic Content] This is a kind of backlight module, which is easy to quickly disassemble the light source group and avoid damage to it (such as optical film set, light guide plate or reflective sheet), so as to effectively improve the backlight module as a whole. Assembly and maintenance efficiency. The present invention proposes a backlight module comprising a back plate, a light guide plate, and an optical film set and a plastic frame. The back panel includes a first body unit 7L, a second body unit, and a fixture. The first body unit has a -th bearing portion, a first curved guiding groove extending outward from the first carrying portion, and a first side portion extending upward from the first S carrying portion, wherein the first side is guided The groove has an opening. The second body unit has a second bearing portion, a second curved guiding groove extending outward from the first bearing portion, and a second side portion extending upward from the second bearing portion, wherein the second curved guiding groove Corresponding to 5: the mouth 3 defines a first-arc guide groove and a second arc-shaped guide light; the te is matched with the relative position of the first body and the second body unit. The carrier portion and the second carrier portion. The light source group is configured on page 纟. And located between the first side portion and the light guide plate. Optical film ::= light guide plate. The plastic frame is fixed on the back plate and located at the end of the side edge of the optical cymbal: the U::: region is adjacent to the first bearing portion - in an embodiment of the present invention, the first bearing portion, the first — The guide groove and the first side edge are integrally formed. In an embodiment of the present invention, the second carrying portion, the second curved guiding groove and the second side portion are integrally formed. In an embodiment of the present invention, the light guide plate has a light-emitting surface, a bottom surface opposite to the light-emitting surface, and a light-incident side surface connecting the light-emitting surface and the bottom surface, and a bottom surface of the light guide plate faces the first load-bearing portion and the second load. And the light source group is disposed corresponding to the light incident side of the light guide plate. In one embodiment of the present invention, the light source group described above includes a circuit board and a plurality of light emitting diodes. The circuit board is disposed between the first side of the backboard and the light guide plate. The light emitting diode is disposed on the circuit board and located between the circuit board and the light guide plate. In one embodiment of the present invention, the optical film set described above is one selected from the group consisting of a brightness enhancement sheet, a enamel sheet, a light concentrating sheet, a protective sheet, a diffusion sheet, and combinations thereof. In an embodiment of the present invention, the backlight module further includes a layer of adhesive M410896 disposed between the light guide plate and the frame. In the present embodiment, the backlight module further includes a film. The light guide plate is disposed between the light guide plate and the first carrier portion and the second carrier portion. Or plastics - in the embodiment, the material of the back plate mentioned above includes metal

Based on the above, since the back panel of the backlight module of the present invention is composed of the first main body, the second main body unit and the fixing member, the optical and dummy materials of the back and core groups need only be disassembled. The main unit can perform the ageing of the light source group without disassembling the backlight module_component. In this way, in addition to improving the assembly and maintenance efficiency of the overall backlight module, the optical film group or the light guide plate can be prevented from being damaged and the chance of foreign matter invading into the optical film group can be avoided. In order to make the above features and advantages of the present invention more comprehensible, the following specific embodiments are described below in detail with reference to the accompanying drawings. [Embodiment] FIG. 1 is a schematic cross-sectional view showing a backlight module according to an embodiment of the present invention. Figure 2 is a perspective view of the first body unit and the second body unit of Figure 1. Referring to FIG. 1 and FIG. 2 simultaneously, in the embodiment, the backlight module should include a back plate 110, a light guide plate 120, a light source group 13A, an optical film group 140, and a plastic frame 150. In detail, the backboard 110 includes a first body unit 112, a second body unit 7C 114, and a fixing member U6. The first body unit 112 of the backing plate m has a first carrying portion 112a, a first curved guiding groove 112b extending outward from the first carrying portion 112a 7 M410896, and a first side portion extending from the first to the upper side 112c, wherein the first portion 112a has an opening 113b. In this embodiment, the first bearing portion, the ll2b shaped guide groove 112b, and the first side portion U2c are, for example, a second body unit 114 having a first arc back plate 11A having a weeping 114a, a a second curved bearing portion extending outward from the second receiving portion a 14a and a second side portion extending from the second carrying portion U4a = 14b, wherein the second curved guiding groove 114b corresponds to the first curved guide The grooves U2b, c, 113b are set. In the present embodiment, the second carrier portion 114&, the first groove 114b and the second side portion 114c are formed, for example, in a body shape. The fixing member 116 of the π back plate no is disposed in the first body unit ι 2 - the curved guiding groove 112b and the second curved portion mb of the second body unit 114 to fix the first body unit 112 and the second body unit ι 4 relative position. In this embodiment, the fixing member 116 is, for example, a positioning stopcock. The light guide plate 120 is disposed on the first carrier portion of the first body unit 112 and the second carrier portion 11 of the second body unit 114 as above. Specifically, the light guide plate 120 has a light emitting surface 122, a bottom surface 124 opposite to the light emitting surface 122, and a light incident side surface 126' connecting the light emitting surface 122 and the bottom surface 124. The bottom surface 124 of the light guiding plate 120 faces the first body unit 112. The first carrier portion 112a and the second carrier portion 114a of the second body unit 114 are disposed on the first carrier portion 112a of the first body unit 112, and are located at the first side portion ii2c and the light guide plate 120. The light source group 130 is disposed corresponding to the light incident side surface 126 of the light guide plate 120. In detail, in the present embodiment, the 'light source group 130 includes a circuit board 132 and a plurality of light-emitting diodes 134'. The circuit board 132 is located at the first side portion 112c of the back plate 11A and the light guide plate 120. The LED 134 is disposed on the circuit board 132 and between the circuit board 132 and the light guide plate 120. More specifically, this embodiment can be refined by surface mount technology (surface mount)

Technology, SMT) soldering the LED 134 to the circuit board 132

Up, and form a light bar (not shown). Then, the light strip is adhered to the first side edge portion 112c of the back plate 11A of the backlight module 100. The light beam emitted from the light-emitting diode 134 in the light-emitting strip enters the light guide plate 12 through the light-incident side 126 of the light guide plate 120, and then is transmitted to the light guide plate 120 through the light-emitting surface 122 of the light guide plate 120 to form a surface light source. .

The optical film group 140 is disposed on the light guide plate 120, wherein the optical film group 140 is selected from one of a brightness enhancement sheet, a enamel sheet, a light concentrating sheet, a protective sheet, a diffusion sheet, or a combination thereof to further optimize the light output effect. . The type and quantity of the optical film group 140 can be adjusted according to different usage requirements, and the present invention does not limit it. The plastic frame 150 is fixed to the back plate 110 and is located above the optical film cylinder 14〇. Therefore, the plastic frame 150 and the back plate no are fixed by, for example, a buckle, and the plastic frame 15G can also pass through the adhesive layer 17 . In this embodiment, the shaft 15G and the back plate _ 疋 are used to fix various components in the moonlight module 100 (for example, 120, the light source group 130, the optical cymbal group 14 〇, etc.), and the back plate (10) selects metal or Other guide materials are used to improve (4) heat dissipation efficiency. When 9 M410896 is used, the material of the back plate 110 may also be plastic, which is not limited herein. In addition, the backlight module 100 of the present embodiment may further include a reflective sheet 160, wherein the reflective sheet 160 is disposed on the light guide plate 120 and the first carrying portion 112a of the first body unit 112 and the second carrying portion of the second body unit 114. Between 114a. Since the reflection sheet 160 has a high reflectance characteristic, it can reflect the light emitted from the light source group 130, thereby improving the utilization efficiency of the light-emitting diode 134. 3 is a schematic cross-sectional view of the first body unit of FIG. Referring to FIG. 3, in the embodiment, the end of the first bearing portion 112a of the first body unit 112 near the first side portion 112c is an elastic deformation region U3a, wherein the light source group 130 is disposed in the elastic deformation region 113a. in. When the light source group 130 of the backlight module 100 needs to be repaired, the first carrier portion 112a of the first body unit 112 can be lowered by first releasing the fixing between the plastic frame 15 and the back plate no. Pull out the original position and take out the light source group Π0 for replacement work. In this way, compared with the prior art, the embodiment only needs to disassemble the first body unit 112 to replace the group 130, without requiring a component for the entire backlight module (for example). It is the light guide plate 120, the optical film group 140 or the reflection sheet 16). Therefore, in addition to improving the maintenance efficiency of the entire backlight module, the light guide plate 120, the optical film 4, or the reflection sheet 160 can be prevented from being damaged, 、, 六, 、, and 140. chance. 1. The eve of the foreign body invaded into the optical film group 14 〇 body unit, the second main back = M410896

When repairing the optical unit, it is only necessary to disassemble the first-main unit to enter: enter the industry' without the maintenance efficiency of the entire backlight module. ^===2 liters of the overall backlight module assembly damage Reducing foreign matter intrusion: optical film == will or guide the board, etc. Although this creation has been disclosed by the embodiment as in any of the technical fields of the present invention;: 识:非 = 围内' when a little change and adjustment can be made Therefore, it is subject to the definition of the patent application scope attached to the company. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic cross-sectional view of a backlight of the present invention.

Figure. 2 is a perspective view of the first body unit and the second body unit of FIG. 1. FIG. 3 is a schematic cross-sectional view of the first body unit detached from W. [Main component symbol description] 1〇〇·Backlight module 110: Back plate 112: First body unit 112a: First bearing portion 112b: First curved guide groove 112c. First side portion M410896 113a: Elastic deformation region 113b: opening 114: second main body unit 114a: second carrying portion 114b: second curved guiding groove 114c: third side portion 116: fixing member

120: light guide plate 122: light-emitting surface 124: bottom surface 126: light-incident side 130: light source group 132: circuit board 134: light-emitting diode 140: optical film group

150: plastic frame 160: reflective sheet 170: adhesive layer 12

Claims (1)

M410896 VI. Patent application scope: 1. A backlight module, comprising: a backboard, comprising: a first main body unit having a first carrying portion and a first curved shape extending outward from the first carrying portion a guiding groove and a first side portion extending upward from the first carrying portion, wherein the first curved guiding groove has an opening; a second main body unit having a second carrying portion and a second bearing a second curved guiding groove extending outwardly and a second side edge extending upward from the second carrying portion, wherein the second curved guiding groove is correspondingly disposed; and a fixing member is disposed at the a first curved guide groove and the second curved guide groove to fix the relative positions of the first body unit and the second body unit; a light guide plate disposed on the first load bearing portion and the second load bearing portion a light source group disposed on the first carrying portion and located between the first side portion and the light guide plate; an optical film group disposed on the light guide plate; and a plastic frame fixed to On the backplane and on the optical film set square. 2. The backlight module of claim 1, wherein the end of the first bearing portion adjacent to the first side portion is an elastic deformation region. 3. The backlight module of claim 1, wherein the first carrying portion, the first curved guiding groove and the first side portion are integrally formed. The backlight module of claim 1, wherein the second carrying portion, the second curved guiding groove and the second side portion are integrally formed. 5. The backlight module of claim 1, wherein the light guide plate has a light exit surface, a bottom surface opposite to the light exit surface, and a light incident side surface connecting the light exit surface and the bottom surface, the light guide plate The bottom surface faces the first carrying portion and the second carrying portion, and the light source group is disposed corresponding to the light incident side of the light guide plate. 6. The backlight module of claim 1, wherein the light source group comprises: a circuit board disposed between the first side portion of the back plate and the light guide plate; and a plurality of light emitting diodes The pole body is disposed on the circuit board and located between the circuit board and the light guide plate. 7. The backlight module of claim 1, wherein the optical film set is one selected from the group consisting of a brightness enhancement sheet, a enamel sheet, a light concentrating sheet, a protective sheet, a diffusion sheet, and a combination thereof. The backlight module of claim 1, further comprising an adhesive layer disposed between the light guide plate and the plastic frame. The backlight module of the first aspect of the invention, further comprising: a reflective sheet disposed between the light-receiving plate and the first carrier portion and the second carrier portion. 10. The backlight module of claim 2, wherein the back plate is made of metal or plastic.