CN107632471A - Light source module and backlight module - Google Patents

Abstract

A light source module, comprising: a circuit substrate having a first surface and a second surface opposite to the first surface; a plurality of light emitting sources arranged at intervals on the first surface and connected by electrical connecting wires, the electrical connection The line includes a part on the first surface and a part on the second surface, and a plurality of first sharp terminals are arranged at intervals on at least one of the first surface and the second surface; The wire on at least one of the first surface and the second surface is electrically connected to the plurality of light-emitting sources, and the wire is provided with a plurality of second sharp terminals. On the same surface of the circuit substrate, each Each of the first sharp terminals is correspondingly provided with a second sharp terminal.

Description

Light source module and backlight module

technical field

The invention relates to a light source module and a backlight module using the light source module.

Background technique

A liquid crystal display usually uses a backlight module to provide backlight required for display, and the backlight module has a light source module for emitting light. Among them, the light emitting diode (Light Emitting Diode, LED) light source module has become the most commonly used light source module due to its advantages of long life, strong color expression, and environmental protection. A common LED light source module includes a circuit substrate and a plurality of LEDs formed on the circuit substrate at intervals. However, during the assembly process of the LED light source module, high voltage static electricity may be generated to damage the LED, and even cause damage to other components on the circuit substrate through the circuit of the LED.

Contents of the invention

In view of the above, it is necessary to provide a light source module with strong antistatic ability.

A light source module, comprising: a circuit substrate having a first surface and a second surface opposite to the first surface; a plurality of light emitting sources arranged at intervals on the first surface and connected by electrical connecting wires, the electrical connection The line includes a part on the first surface and a part on the second surface, and a plurality of first sharp terminals are arranged at intervals on at least one of the first surface and the second surface; The wire on at least one of the first surface and the second surface is electrically connected to the plurality of light-emitting sources. The wire is provided with a plurality of second sharp terminals. On the same surface of the circuit substrate, each Each of the first sharp terminals is correspondingly provided with a second sharp terminal.

A backlight module using the above light source module is also provided, and the backlight module is used to provide a backlight required by a liquid crystal display.

Compared with the prior art, through the first sharp terminal and the second sharp terminal provided on the light source module, the static electricity formed in the light source module can be collected through the first sharp terminal and then passed through The second sharp terminal is released, or the static electricity is evenly distributed to each of the light emitting sources so as to prevent the high voltage static electricity from damaging the light emitting sources.

Description of drawings

FIG. 1 is a schematic cross-sectional structure diagram of a backlight module provided by the present invention.

Fig. 2 is a schematic structural diagram of the light source module provided by the first embodiment of the present invention.

FIG. 3 is a partially enlarged schematic view along the dotted line III in FIG. 2 .

FIG. 4 is a schematic diagram of the circuit structure along the dotted line IV in FIG. 2 .

Fig. 5 is a schematic structural diagram of a light source module provided by a second embodiment of the present invention.

FIG. 6 is a partially enlarged schematic view along the dotted line VI in FIG. 5 .

Fig. 7 is a schematic structural diagram of a light source module provided by a third embodiment of the present invention.

FIG. 8 is a schematic cross-sectional structure diagram along line VII-VII in FIG. 7 .

Description of main component symbols Backlight module 10 Light source module 100 circuit board 110 first surface 110a second surface 110b light source 111 electrical connection wire 112 first sharp terminal 1120 connection pad 1121 wire 113 Second sharp terminal 1130 perforation 114 through hole 115 Optical film set 11 light guide plate 12 Light incident surface 120 A reflective sheet 13 Plastic frame 14 Backplane 15 flexible circuit board 16

The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings.

detailed description

Please refer to FIG. 1 , the light source module 100 provided by the present invention can be applied in a backlight module 10 . The backlight module 10 can be used to provide the backlight required for liquid crystal display. The backlight module 10 includes an optical film set 11 , a light guide plate 12 , the light source module 100 , a reflection sheet 13 , a plastic frame 14 and a back plate 15 . The back plate 15 forms an accommodating cavity (not shown), and the optical film set 11 , the light guide plate 12 and the reflective sheet 13 are sequentially stacked in the accommodating cavity of the back plate 15 . The optical film set 11 , the light guide plate 12 , the light source module 100 and the reflection sheet 13 can be fixed by the plastic frame 14 . The light source module 100 is set right on the light incident surface 120 of the light guide plate 12, and the light emitted by the light source module 100 enters from the light incident surface 120 of the light guide plate 12, and then passes through the optical film group 11 and is converted into The backlight with high brightness and uniform luminance enters a liquid crystal display panel (not shown) arranged on the backlight module 10, and the reflective sheet 13 reflects part of the light incident on it back to the light guide plate 12 After passing through the optical film group 11, it reaches the liquid crystal display panel.

Please refer to FIG. 2 and FIG. 3 together. The light source module 100 of the first embodiment includes a circuit substrate 110 , a plurality of light sources 111 and a wire 113 . The circuit substrate 110 is, for example, a flexible circuit substrate, which is an insulating material. The circuit substrate 110 has a first surface 110a and a second surface 110b opposite to the first surface 110a, and the plurality of light emitting sources 111 are arranged at intervals on the first surface 110a. In this embodiment, the plurality of light emitting sources 111 are arranged in a row. The light emitting source 111 is, for example, a light emitting diode (Light Emitting Diode, LED).

Please refer to FIG. 4 together. In this embodiment, the plurality of light emitting sources 111 are connected by a plurality of electrical connecting wires 112, and each of the electrical connecting wires 112 is connected with a plurality of light emitting sources 111, for example, four of the light emitting sources. The light source 111 is connected to the same electrical connection line 112 . The four light-emitting sources 111 can be electrically connected to the electrical connection line 112 in parallel. On the same electrical connecting wire 112 , the electrical connecting wire 112 between every two adjacent light emitting sources 111 is formed with a first sharp terminal 1120 . In this embodiment, each of the first sharp terminals 1120 is in a sawtooth shape and includes three sharp points, so that static electricity can be better collected in the first sharp terminals 1120 and discharged through the second sharp terminals 1130 . In other modified implementation manners, the number of sharp points included on each first sharp terminal 1120 may be 1 or 2, or more than 3, and the shape of the first sharp terminal 1120 is not limited to the zigzag shape, Can be needle-like or other pointed shape.

In a modified embodiment, the number of the first sharp terminals 1120 is not limited, that is, not all the electrical connection lines 112 between two adjacent light emitting sources 111 are formed with the first sharp terminals 1120, which can be determined according to the actual situation. The required or actual space size determines the number of first sharp terminals 1120 on the same electrical connection line 112 . Wherein, all the light emitting sources 111 can also be connected by only one electrical connection wire 112, that is, all the light emitting sources 111 are connected to the same electrical connection wire 112, at this time, according to the circuit board 110 In the wiring space, a first sharp terminal 1120 is selectively formed on the electrical connection wire 112 between two adjacent light emitting sources 111 . The electrical connection line 112 includes a portion formed on the first surface 110a and a portion formed on the second surface 110b, and a plurality of connections are formed at intervals on the electrical connection line 112 formed on the first surface 110a. pads 1121 , the plurality of light emitting sources 111 are respectively disposed on the plurality of connection pads 1121 . The plurality of first sharp terminals 1120 are formed on the electrical connection lines 112 located on the first surface 110a. The first sharp terminal 1120 can be directly formed by protruding from the electrical connection line 112 , or can be a conductive object additionally disposed on the electrical connection line 112 and electrically connected to the electrical connection line 112 . Wherein, the circuit substrate 110 is formed with a plurality of through holes 114 penetrating through the first surface 110a and the second surface 110b, and the electrical connection wires 112 located on the first surface 110a are connected to the second surface 110b. The electrical connecting wires 112 are electrically connected through the through holes 114 . The electrical connection wire 112 is connected to an external circuit, such as a power supply, through a flexible printed circuit (FPC) 16 .

The conductive wires 113 are formed on the first surface 110 a , are substantially parallel to and spaced from the electrical connection wires 112 on the first surface 110 a , and are non-electrically connected to the plurality of light emitting sources 111 . A plurality of second sharp terminals 1130 are formed at intervals on the wire 113 . The shape and structure of the second sharp terminal 1130 and the first sharp terminal 1120 are the same. Each second sharp terminal 1130 is opposite to a first sharp terminal 1120 . Further, the tip portion of each second sharp terminal 1130 is opposite to the tip portion of the first sharp terminal 1120 .

The wire 113 is formed of conductive material, which may be made of the same material as the electrical connection wire 112 . The plurality of second sharp terminals 1130 can be directly protruded from the wire 113, or can be a conductive object additionally arranged on the wire 113 and electrically connected to the wire 113, the conductive object has a sharp structure. The wire 113 may be grounded, and of course, the wire 113 may not be electrically connected to any other components.

Please further refer to FIG. 5 and FIG. 6 . It should be noted that the light source module 100 of the second embodiment shown in FIG. 5 follows the reference numerals of the light source module 100 of the first embodiment. The structure of the light source module 100 in this embodiment is basically the same as the structure of the light source module 100 in the above-mentioned first embodiment, the difference is that the first sharp terminal 1120 and the second sharp terminal 1130 in this embodiment are both formed on the The second surface 110b of the circuit substrate 110 (that is, the backside of the first surface 110a).

Specifically, the light source module 100 includes a circuit substrate 110 , a plurality of light sources 111 and a wire 113 . The circuit substrate 110 is, for example, a flexible circuit substrate, which is an insulating material. The circuit substrate 110 has a first surface 110a and a second surface 110b opposite to the first surface 110a, the plurality of light emitting sources 111 are arranged at intervals on the first surface 110a, and the plurality of light emitting sources 111 are arranged in a row. The light emitting source 111 is, for example, a light emitting diode (Light Emitting Diode, LED).

In this embodiment, the plurality of light emitting sources 111 are connected by a plurality of electrical connecting wires 112, and each of the electrical connecting wires 112 is connected with a plurality of light emitting sources 111, for example, four of the light emitting sources 111 are connected to the same wire. The above-mentioned electrical connecting wire 112. The four light-emitting sources 111 can be electrically connected to the electrical connection line 112 in parallel, for example. Each of the electrical connection lines 112 includes a portion formed on the first surface 110a and a portion formed on the second surface 110b, and the electrical connection lines 112 formed on the first surface 110a are formed at intervals of several a plurality of connection pads 1121, and the plurality of light sources 111 are respectively disposed on the plurality of connection pads 1121. On the same electrical connection wire 112 located on the second surface 110b, a first sharp terminal 1120 is formed corresponding to each electrical connection wire 112 between two adjacent light emitting sources 111 . In other embodiments, the number of the first sharp terminals 1120 is not limited, that is, not all the electrical connection lines 112 between two adjacent light emitting sources 111 are formed with first sharp terminals. 1120, the number of first sharp terminals 1120 on the electrical connection line 112 of the second surface 110b may be determined according to actual needs or actual space size.

Wherein, all the light emitting sources 111 may also be connected by only one electrical connection wire 112, at this time, according to the wiring space of the circuit substrate 110, a partial connection between two adjacent light emitting sources 111 may be selectively connected. The first sharp terminal 1120 is formed on the electrical connection line 112 located on the second surface 110b. That is to say, when all the light emitting sources 111 are connected to the same electrical connection wire 112 , there is no need to provide the first sharp terminal 1120 between every two light emitting sources 111 .

The first sharp terminal 1120 can be directly formed by protruding from the electrical connection line 112 , or can be a conductive object additionally disposed on the electrical connection line 112 and electrically connected to the electrical connection line 112 . Wherein, the circuit substrate 110 is formed with a plurality of through holes 114 penetrating through the first surface 110a and the second surface 110b, and the electrical connection wires 112 located on the first surface 110a are connected to the second surface 110b. The electrical connecting wires 112 are electrically connected through the through holes 114 . The electrical connection wire 112 is connected to an external circuit, such as a power supply, through a flexible printed circuit (FPC) 16 .

The conductive wire 113 is formed on the second surface 110 b, and is substantially parallel to and spaced from the electrical connection wire 112 on the second surface 110 b, and is non-electrically connected to the plurality of light emitting sources 111 . A plurality of the second sharp terminals 1130 are formed at intervals on the wire 113 , and each second sharp terminal 1130 is opposite to a first sharp terminal 1120 . Further, the tip portion of each second sharp terminal 1130 is opposite to the tip portion of the first sharp terminal 1120 .

The wire 113 is formed of conductive material, which may be made of the same material as the electrical connection wire 112 . The plurality of second sharp terminals 1130 can be directly protruded from the wire 113, or can be additionally arranged on the wire 113 and electrically connected to the wire 113. The conductive object has sharp structure. The wire 113 may be grounded, and of course, the wire 113 may not be electrically connected to any other components.

Please refer to FIG. 7 and FIG. 8 , the light source module 100 of the third embodiment follows the reference numerals of the light source module 100 of the first embodiment. The structure of the light source module 100 in this embodiment is basically the same as the structure of the light source module 100 in the first embodiment, the difference is that the first surface 110a and the second surface 110b of the circuit board 110 in this embodiment are both formed There is a first sharp terminal 1120 and a second sharp terminal 1130 .

Specifically, the light source module 100 includes a circuit substrate 110 , a plurality of light sources 111 and two wires 113 . The circuit substrate 110 is, for example, a flexible circuit substrate, which is an insulating material. The circuit substrate 110 has a first surface 110a and a second surface 110b opposite to the first surface 110a, the plurality of light emitting sources 111 are arranged at intervals on the first surface 110a, and the plurality of light emitting sources 111 are arranged in a row. The light emitting source 111 is, for example, a light emitting diode (Light Emitting Diode, LED).

In this embodiment, the plurality of light emitting sources 111 are connected by a plurality of electrical connecting wires 112, and each of the electrical connecting wires 112 is connected with a plurality of light emitting sources 111, for example, four of the light emitting sources 111 are connected to the same wire. The above-mentioned electrical connecting wire 112. The four light-emitting sources 111 can be electrically connected to the electrical connection line 112 in parallel, for example. Each of the electrical connection lines 112 includes a portion formed on the first surface 110a and a portion formed on the second surface 110b, and the electrical connection lines 112 formed on the first surface 110a are formed at intervals of several a plurality of connection pads 1121, and the plurality of light sources 111 are respectively disposed on the plurality of connection pads 1121. On the same electrical connecting wire 112, the electrical connecting wire 112 between every two adjacent light emitting sources 111 is formed with a first sharp terminal 1120, and the first surface 110a and the second The surface 110b is provided with the first sharp terminal 1120 . In other modified embodiments, the number of the first sharp terminals 1120 is not limited, that is, not all the electrical connection lines 112 between two adjacent light emitting sources 111 are formed with the first sharp terminals 1120, which can be based on The number of first sharp terminals 1120 on the same electrical connection line 112 is determined by actual needs or actual space size.

Wherein, all the light emitting sources 111 can also be connected by only one electrical connection wire 112, that is, all the light emitting sources 111 are connected to the same electrical connection wire 112, at this time, according to the circuit board 110 In the wiring space, the first sharp terminal 1120 is selectively formed on the electrical connection line 112 between two adjacent light emitting sources 111 .

In this embodiment, the plurality of first sharp terminals 1120 are formed on the electrical connection lines 112 on the first surface 110 a and on the electrical connection lines 112 on the second surface 110 b. The plurality of first sharp terminals 1120 can be formed directly protruding from the electrical connection line 112 , or can be additionally arranged on the electrical connection line 112 and electrically connected to the electrical connection line 112 . object. Wherein, a plurality of through holes 114 penetrating through the first surface 110 a and the second surface 110 b are formed on the circuit substrate 110 , and the electrical connection wire 112 of the first surface 110 a part is connected to the second surface 110 b. The electrical connection line 112 of the part of the surface 110b is electrically connected through the through hole 114, and the electrical connection line 112 of the part of the first surface 110a is connected with the electrical connection of the part of the second surface 110b. The connecting wires 112 are all formed with the first sharp terminals 1120 . The electrical connection wire 112 is connected to an external circuit, such as a power supply, through a flexible printed circuit (FPC) 16 .

The two wires 113 are respectively formed on the first surface 110 a and the second surface 110 b, and are non-electrically connected to the plurality of light emitting sources 111 . A plurality of second sharp terminals 1130 are formed at intervals on each of the wires 113 , and a tip portion of each second sharp terminal 1130 is opposite to a tip portion of a first sharp terminal 1120 .

The shape and structure of the first sharp terminal 1120 and the second sharp terminal 1130 are the same. In this embodiment, each of the first sharp terminals 1120 and each of the second sharp terminals 1130 has a zigzag shape, so that static electricity can be better collected in the first sharp terminals 1120 and pass through the second sharp terminals 1130 freed. In other modified implementations, the first sharp terminal 1120 may be in the shape of a needle or other pointed shapes.

The two conductive wires 113 are respectively disposed on the first surface 110 a and the second surface 110 b, and are formed to be parallel to the row of light emitting sources 111 . The wire 113 is formed of conductive material, which may be made of the same material as the electrical connection wire 112 . The plurality of second sharp terminals 1130 can be formed directly protruding from the wire 113, or can be a conductive object additionally arranged on the wire 113 and electrically connected to the wire 113. The conductive object has sharp structure. The wire 113 may be grounded, and of course, the wire 113 may not be electrically connected to any other components. The circuit substrate 110 is formed with a through hole 115 penetrating through the first surface 110a and the second surface 110b, and the wire 113 on the first surface 110a and the wire 113 on the second surface 110b pass through the through hole 115. Hole 115 is connected.

Through the first sharp terminal 1120 and the second sharp terminal 1130 provided on the light source module 100, the static electricity formed in the light source module 100 can be collected through the first sharp terminal 1120 and then pass through the The second sharp terminal 1130 is released, or evenly distributes the static electricity to each of the light emitting sources 111 to avoid damage to one of the light emitting sources 111 by high voltage static electricity.

The above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced. Without departing from the spirit and scope of the technical solution of the present invention.

Claims (10)

1. A light source module, characterized in that, comprising: A circuit substrate having a first surface and a second surface opposite to the first surface; A plurality of light-emitting sources are arranged at intervals on the first surface and connected by electrical connection lines. The electrical connection line includes a part located on the first surface and a part located on the second surface. A plurality of first sharp terminals are arranged at intervals on the electrical connection line of at least one of the surfaces; A wire disposed on at least one of the first surface and the second surface and electrically connected to the plurality of light-emitting sources, the wire is provided with a plurality of second sharp terminals, and is on the same surface of the circuit substrate , each of the first sharp terminals is correspondingly provided with a second sharp terminal. 2 . The light source module according to claim 1 , wherein the tip of the correspondingly arranged first sharp terminal is directly opposite to the tip of the second sharp terminal. 3. The light source module according to claim 1, wherein the plurality of first sharp terminals and the plurality of second sharp terminals are all disposed on the first surface or both are disposed on the second surface. 4 . The light source module according to claim 1 , wherein both the first surface and the second surface are provided with the first sharp end and the second sharp terminal. 5. The light source module according to claim 4, wherein the circuit substrate is formed with a through hole penetrating through the first surface and the second surface, the wire on the first surface and the second surface The wires of the surface are connected through the vias. 6. The light source module according to claim 1, wherein the electrical connection wires on the first surface and the electrical connection wires on the second surface are electrically connected through the through holes formed on the electrode substrate. sexual conduction. 7. The light source module according to claim 1, wherein each of the first sharp terminals is located between two adjacent light emitting sources. 8. The light source module according to claim 1, wherein each of the first sharp terminals is in a sawtooth shape. 9. The light source module according to claim 1, wherein the wire is grounded. 10. A backlight module for providing a backlight required by a liquid crystal display, characterized in that the backlight module uses the light source module according to any one of claims 1-9.