TWI632418B - Light source module - Google Patents

Abstract

A light source module is disposed on a light incident surface of a light guide plate. The light source module includes a lamp cover, a first circuit board, a second circuit board, a first light source, and a second light source. The lampshade includes a body and a protrusion, wherein the protrusion extends from the body toward the light incident surface of the light guide plate along the long axis direction of the lampshade, and the protrusion divides the lampshade into a first light-emitting area and a second light-emitting area. The first circuit board and the second circuit board are respectively disposed in the first light emitting area and the second light emitting area of the lamp cover. The first light source is disposed on the first circuit board, and the first light emitting surface of the first light source faces the light incident surface of the light guide plate. The minimum distance between the bump and the light incident surface of the light guide plate is smaller than the minimum distance between the first light source and the light incident surface of the light guide plate.

Description

Light source module

The invention relates to a light source module.

With the development of technology, the demand for display screens has been increasing. For example, the display screen can be found on a personal computer or a laptop. As for the types of display screens, liquid crystal display panels using liquid crystal display technology have become one of the most common types on the market. In the structure of the liquid crystal display panel, the backlight module is one of the key components of the liquid crystal display panel. Since the liquid crystal itself does not emit light, the function of the backlight module is to provide sufficient brightness and a uniformly distributed light source, so that the liquid crystal display panel can The image is displayed normally.

On the other hand, according to different application modes of the liquid crystal display panel, for example, an automotive liquid crystal display panel, an industrial liquid crystal display panel, or a gaming liquid crystal display panel, the brightness demand is also increasing. When the brightness requirement is higher, the number of light source modules in the backlight module also needs to be correspondingly increased. However, this will increase the cost and increase the time required for assembly.

An embodiment of the present invention provides a light source module. One side of the light guide plate includes at least a lamp cover, a first light source and a second light source, wherein the lamp cover can be divided into a first light emitting area and a second light emitting area by its bumps, and the first light source and the second light source are respectively disposed The first light emitting area and the second light emitting area make the combination of the first light source and the second light source into a light source array, thereby improving the brightness provided by the light source module. On the other hand, since the minimum distance between the bump and the light guide plate is smaller than the minimum distance between the first light source and the light guide plate and the minimum distance between the second light source and the light guide plate, the first light source or the second light source can be prevented from contacting the light guide plate, thereby Prevent the first light source or the second light source from damaging its components due to collision.

An embodiment of the present invention provides a light source module disposed on a light incident surface of a light guide plate. The light source module includes a lamp cover, a first circuit board, a second circuit board, a first light source, and a second light source. The lampshade includes a main body and a projection, wherein the projection extends from the main body toward the light incident surface of the light guide plate along the long axis direction of the lampshade, and the projection divides the lampshade into a first light-emitting area and a second light-emitting area, wherein the projection The minimum distance from the light incident surface of the light guide plate is D. The first circuit board and the second circuit board are respectively disposed in the first light emitting area and the second light emitting area of the lamp cover. The first light source is disposed on the first circuit board, and the first light emitting surface of the first light source faces the light incident surface of the light guide plate. The minimum distance between the first light source and the light incident surface of the light guide plate is d1, and D <d1. The second light source is disposed on the second circuit board, and the second light emitting surface of the second light source faces the light incident surface of the light guide plate. The minimum distance between the second light source and the light incident surface of the light guide plate is d2, and D <d2.

In some embodiments, the first circuit board and the second circuit board are located on the surface of the body facing the light incident surface of the light guide plate, wherein the first light source and the second light source are top view light-emitting diodes. ). The first light source is disposed on the surface of the first circuit board facing the light incident surface of the light guide plate, and the second The light source is disposed on a surface of the second circuit board facing the light incident surface of the light guide plate.

In some embodiments, the bump has two opposite side surfaces, the side surface is perpendicular to the light incident surface of the light guide plate, and the first circuit board and the second circuit board are respectively located on the side surfaces, wherein the first light source and the second circuit board The light source is a side view light-emitting diode. The first light source is disposed on a surface of the first circuit board facing away from the side surface, and the second light source is disposed on a surface of the second circuit board facing away from the side surface.

In some embodiments, the first circuit board and the second circuit board are disposed on the surface of the body facing the light incident surface of the light guide plate, and are respectively located on opposite sides of the bump.

In some embodiments, the light source module further includes a circuit board connection portion. The opposite sides of the circuit board connection portion are respectively connected to the first circuit board and the second circuit board, and the circuit board connection portion covers the bump.

In some embodiments, the first circuit board, the second circuit board, and the circuit board connection portion are integrally formed.

In some embodiments, the light source module further includes a protruding structure. The protruding structure is formed by bending the combination of the first circuit board, the second circuit board and the circuit board connecting portion, wherein the bump is located in the protruding structure.

In some embodiments, there are a plurality of first light sources in the first light-emitting area. Some of the first light sources are forward light-emitting diodes, and some of the first light sources are lateral light-emitting diodes. There are a plurality of second light sources in the second light-emitting area. Some of the second light sources are forward light-emitting diodes, and the other part of the second light sources are lateral light-emitting diodes.

In some embodiments, the lampshade further includes a first side wall and a second side wall. Sidewall. The first side wall and the second side wall extend from the body toward the light incident surface of the light guide plate along the long axis direction of the lampshade. There is at least one gap between the first side wall and the bump, and between the second side wall and the bump. There is at least another gap.

In some embodiments, the first circuit board covers at least the surface of the first sidewall facing the bump, and the second circuit board covers at least the surface of the second sidewall facing the bump. The first light source and the second light source are lateral light emitting diodes. The first light source is disposed on a surface of the first circuit board facing away from the first side wall, and the second light source is disposed on a surface of the second circuit board facing away from the second side wall. On the surface.

100‧‧‧ backlight module

102, 202, 302, 402, 502, 602‧‧‧ light source modules

104‧‧‧light guide

106‧‧‧ Light surface

108‧‧‧ smooth surface

110‧‧‧ Lampshade

112‧‧‧ Ontology

114‧‧‧ bump

115‧‧‧ side surface

116‧‧‧first side wall

117‧‧‧Second sidewall

118‧‧‧ first edge

119‧‧‧Second Edge

120‧‧‧First circuit board

122‧‧‧Second circuit board

124‧‧‧Circuit board connection

126‧‧‧ protruding structure

128‧‧‧ Polyline

130, 130a, 130b, 130c‧‧‧First light source

131‧‧‧first luminous surface

132, 132a, 132b, 132c‧‧‧Second light source

133‧‧‧Second luminous surface

A1‧‧‧The first light-emitting area

A2‧‧‧Second light-emitting area

D, d1, d2‧‧‧ distance

DL‧‧‧long axis direction

DS‧‧‧ short axis direction

G‧‧‧ Clearance

FIG. 1A is a schematic side view of a backlight module composed of a light guide plate and a light source module according to a first embodiment of the present invention.

FIG. 1B is a schematic front view of the light source module in FIG. 1A.

FIG. 2A is a schematic side view of a backlight module composed of a light guide plate and a light source module according to a second embodiment of the present invention.

FIG. 2B is a schematic front view of the light source module in FIG. 2A.

FIG. 2C is a schematic front view of the first circuit board, the second circuit board, and the circuit board connecting portion in FIG. 2A after being unfolded.

FIG. 3A is a schematic side view of a backlight module composed of a light guide plate and a light source module according to a third embodiment of the present invention.

FIG. 3B is a schematic front view of the light source module in FIG. 3A.

FIG. 3C is a schematic front view of the first circuit board, the second circuit board, and the circuit board connecting portion of FIG. 3A after being unfolded.

FIG. 4A is a schematic side view of a backlight module composed of a light guide plate and a light source module according to a fourth embodiment of the present invention.

FIG. 4B is a schematic front view of the light source module in FIG. 4A.

FIG. 5A is a schematic side view of a backlight module composed of a light guide plate and a light source module according to a fifth embodiment of the present invention.

FIG. 5B is a schematic front view of the light source module in FIG. 5A.

FIG. 6 is a schematic side view of a backlight module composed of a light guide plate and a light source module according to a sixth embodiment of the present invention.

In the following, a plurality of embodiments of the present invention will be disclosed graphically. For the sake of clarity, many practical details will be described in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the present invention, these practical details are unnecessary. In addition, in order to simplify the drawings, some conventional structures and components will be shown in the drawings in a simple and schematic manner.

Regarding the "first", "second", ..., etc. used herein, they do not specifically refer to the order or order, nor are they used to limit the present invention. They are only used to distinguish elements described in the same technical terms. Or just operate.

In view of the fact that when the brightness requirement of the display panel is higher, the number of light source modules in the backlight module also needs to be correspondingly increased. Therefore, the light source module of the present invention includes a lamp cover, a first light source, and a second light source. The bumps are divided into a first light-emitting area and a second light-emitting area, wherein the first light source and the second light source are respectively disposed in the first light-emitting area and the second light-emitting area, so that the combination of the first light source and the second light source can be Become a light source array, so as to increase the light brightness provided by the light source module, so that when there is a high light demand, a single light source module can provide the set light demand.

Please see FIG. 1A and FIG. 1B. FIG. 1A shows a schematic side view of the backlight module 100 composed of the light guide plate 104 and the light source module 102 according to the first embodiment of the present invention, and FIG. 1B shows FIG. 1A is a schematic front view of the light source module 102. The backlight module 100 includes a light source module 102 and a light guide plate 104. The light guide plate 104 has a light entrance surface 106 and a light exit surface 108, wherein the light entrance surface 106 and the light exit surface 108 are adjacent to each other. The light source module 102 is disposed on the light incident surface 106 of the light guide plate 104 and is used to provide light to the light guide plate 104. Specifically, the light source module 102 is disposed on one side of the light incident surface 106 of the light guide plate 104 and emits light toward the light guide plate 104 so that the light emitted from the light source module 102 can enter through the light incident surface 106 of the light guide plate 104 The light guide plate 104 passes through the light exit surface 108 of the light guide plate 104 and leaves the light guide plate 104. In addition, since the light entrance surface 106 and the light exit surface 108 are adjacent to each other, the light source module 102 in this embodiment is a side-entry light source module relative to the light guide plate 104. Furthermore, the light source module 102 is a kind of extractable The side-type light source module of the interchangeable type, that is, in the configuration of the backlight module 100, the light source module 102 and the light guide plate 104 are two independent components. The backlight module 100 may further include a track (not shown), in which the light source module 102 is placed in this track. When the light source module 102 of the backlight module 100 is damaged, the damaged light source module 102 may be pulled out along the track, and another light source module 102 may be inserted along the track to perform replacement work.

The light source module 102 includes a lamp cover 110, a first circuit board 120, a second circuit board 122, a first light source 130 and a second light source 132. The lampshade 110 has a long-axis direction DL and a short-axis direction DS, where the long-axis direction DL is parallel to FIG. 1B The vertical direction and the short-axis direction DS are horizontal directions parallel to FIG. 1B. In other words, the body 112 has a first edge 118 and a second edge 119 on the two shorter sides, respectively, and the bump 114 extends from the first edge 118 to the second edge 119.

The lampshade 110 includes a main body 112 and a projection 114, wherein the main body 112 and the projection 114 are integrally formed, and can be formed by die casting or aluminum extrusion. The projection 114 extends from the main body 112 toward the light incident surface 106 of the light guide plate 104 along the major axis direction DL of the lamp cover 110. The projection 114 divides the lamp cover 110 into a first light-emitting area A1 and a second light-emitting area A2, that is, in the short-axis direction DS of the lamp cover 110, opposite sides of the projection 114 are respectively divided into a first light-emitting area A1 and a first light-emitting area A1. Two light-emitting area A2.

The first circuit board 120 and the second circuit board 122 are respectively disposed in the first light-emitting area A1 and the second light-emitting area A2 of the lamp cover 110, and the first circuit board 120 and the second circuit board 122 are located in the body 112 facing the light guide plate 104. On the surface of the light incident surface 106. Further, the number of circuit boards of the light source module 102 in this embodiment is two, which are the first circuit board 120 and the second circuit board 122, respectively, and the first circuit board 120 and the second circuit board 122 are located on the convex portions, respectively. Opposite sides of the block 114.

The first light source 130 is disposed on the first circuit board 120, and the first light emitting surface 131 of the first light source 130 faces the light incident surface 106 of the light guide plate 104. The second light source 132 is disposed on the second circuit board 122, and the second light emitting surface 133 of the second light source 132 faces the light incident surface 106 of the light guide plate 104. The light source module 102 can emit light toward the light guide plate 104 through the first light source 130 and the second light source 132.

In addition, the first light source 130 and the second light source 132 depicted in FIG. 1B are symmetrical to the bumps 114, that is, the vertical distances between the bumps 114 and each of the first light sources 130 or each of the second light sources 132 are equal. In other embodiments, the first light source 130 and the second light source 132 may also be arranged in an asymmetric manner, that is, The vertical distance between the bump 114 and each first light source 130 or each second light source 132 may be different. For example, the vertical distance between the bump 114 and each first light source 130 is smaller than that of the bump 114 and each second light source 132. Vertical distance.

In this embodiment, the first light source 130 and the second light source 132 are top view light-emitting diodes. Further, the first light source 130 is disposed on a surface of the first circuit board 120, and this surface faces the light incident surface 106 of the light guide plate 104, and the connection interface between the first light source 130 and the first circuit board 120 and the first The first light emitting surfaces 131 of a light source 130 face each other. Similarly, the second light source 132 is disposed on the surface of the second circuit board 122, and this surface faces the light incident surface 106 of the light guide plate 104, and the connection interface between the second light source 132 and the second circuit board 122 and the second The second light emitting surfaces 133 of the light source 132 are opposed to each other.

The combination of the first light source 130 and the second light source 132 can be regarded as a two-column light source array. Through this light source array, the light brightness provided by the light source module 102 can be improved. In other words, when the backlight module 100 has a higher brightness requirement, a single light source module 102 can provide the set brightness requirement.

In addition, the minimum distance between the bump 114 and the light incident surface 106 of the light guide plate 104 is the distance D, that is, the bump 114 has a surface facing the light guide plate 104, and the distance D is the surface of the bump 114 and the guide The minimum vertical distance between the light incident surfaces 106 of the light plate 104. The minimum distance between the first light source 130 and the light incident surface 106 of the light guide plate 104 is a distance d1, that is, the distance d1 is the minimum vertical distance between the first light emitting surface 131 of the first light source 130 and the light incident surface 106 of the light guide plate 104, and Distance D <distance d1. The minimum distance between the second light source 132 and the light incident surface 106 of the light guide plate 104 is a distance d2, that is, the distance d2 is the second light emitting surface 133 of the second light source 132 and the light guide. The minimum vertical distance of the light incident surface 106 of the plate 104, and the distance D <the distance d2.

With this configuration, when the light source module 102 is assembled to one side of the light incident surface 106 of the light guide plate 104, the first light source 130 or the second light source 132 can be avoided because the distance D <distance d1 and the distance D <distance d2. It is in contact with the light incident surface 106 of the light guide plate 104, thereby preventing the first light source 130 or the second light source 132 from being damaged due to collision. On the other hand, when the bumps 114 are provided, the space on both sides of the bumps 114 can provide heat dissipation space for the first light source 130 and the second light source 132. And the bump 114 can increase the heat conduction path in the light source module 102 and increase the heat dissipation area at the same time, so that the first light source 130 and the second light source 132 will not cause the phenomenon of reduced optical efficiency due to overheating. That is, under the conditions of distance D <distance d1 and distance D <distance d2, since the distance between the first light source 130 and the light guide plate 104 and the distance between the second light source 132 and the light guide plate 104 are increased, so The overheating condition caused by the first light source 130 and the second light source 132 being too close to the light guide plate 104 can be avoided.

To sum up, the light source module of the present invention divides the lamp cover into a first light emitting area and a second light emitting area by a bump, wherein the first light source and the second light source are respectively disposed in the first light emitting area and the second light emitting area, so that the first The combination of a light source and a second light source can become a light source array, thereby improving the brightness provided by the light source module. In addition, the minimum distance between the first light source and the light guide plate is greater than the minimum distance between the bump and the light guide plate, and the minimum distance between the second light source and the light guide plate is greater than the minimum distance between the bump and the light guide plate. The light source is in contact with the light guide plate, thereby preventing the first light source or the second light source from damaging its components due to collision. Furthermore, through the above distance configuration, since the distance between the first light source and the light guide plate and the distance between the second light source and the light guide plate are increased, the first light source can be avoided An overheating condition caused by being too close to the second light source and the light guide plate.

Please see FIG. 2A and FIG. 2B. FIG. 2A shows a schematic side view of the backlight module 100 composed of the light guide plate 104 and the light source module 202 according to the second embodiment of the present invention. A schematic front view of the light source module 202 in FIG. 2A is shown. At least one difference between this embodiment and the first embodiment is that the light source module 202 of this embodiment further includes a circuit board connection portion 124, wherein opposite sides of the circuit board connection portion 124 connect the first circuit board 120 and the second The circuit board 122, and the circuit board connection portion 124 covers the bump 114.

That is, in this embodiment, the first circuit board 120, the second circuit board 122, and the circuit board connection portion 124 are integrally formed circuit boards, and the integrally formed circuit board covers the entrance of the lamp cover 110 toward the light guide plate 104. The surface of the glossy surface 106. Since the number of circuit boards of the light source module 202 in this embodiment is one, the number of components used can be reduced, thereby simplifying the assembly process.

In addition, in the light source module 202 of this embodiment, the arrangement relationship of distance D <distance d1 and distance D <distance d2 is still maintained, where distance D is the minimum distance between the bump 114 and the light guide plate 104, and distance d1 is the first light source. The minimum distance between 130 and the light guide plate 104, and the distance d2 is the minimum distance between the second light source 132 and the light guide plate 104. Therefore, the first light source 130 or the second light source 132 can still avoid contact with the light guide plate 104, thereby preventing the components from being damaged due to the collision. On the other hand, the thickness of the circuit board connection portion 124 is not greater than the distance D, so as to avoid the circuit board connection portion 124 from contacting the light guide plate 104, thereby preventing damage caused by the collision.

Please see FIG. 2A and FIG. 2C again, where FIG. 2C shows a schematic front view of the first circuit board 120, the second circuit board 122, and the circuit board connecting portion 124 in FIG. 2A, and FIG. Draw as the first circuit board 120, the second A schematic diagram of the circuit board 122 and the circuit board connection portion 124 before being bent and assembled. The combination of the first circuit board 120, the second circuit board 122, and the circuit board connection portion 124 can be bent to form a protruding structure 126, and the bump 114 is located in the protruding structure 126. Specifically, the protruding structure 126 can be formed by bending the circuit board at least twice. For example, in FIG. 2C, the four protruding lines 128 on the combination of the first circuit board 120, the second circuit board 122, and the circuit board connection portion 124 can be used to form the protruding structure 126 depicted in FIG. 2A. On the other hand, the four fold lines 128 are located between the first light source 130 and the second light source 132.

Next, please see FIG. 2A and FIG. 2B again. After bending the first circuit board 120, the second circuit board 122, and the circuit board connection portion 124, the first light source 130 and the second light source 132 are still located at the bumps. On opposite sides of 114, the combination of the first light source 130 and the second light source 132 is still a two-column light source array. In other words, the brightness provided by the light source module 202 will not be affected by bending the first circuit board 120, the second circuit board 122, and the circuit board connection portion 124.

Please refer to FIG. 3A and FIG. 3B, wherein FIG. 3A illustrates a schematic side view of a backlight module 100 composed of a light guide plate 104 and a light source module 302 according to a third embodiment of the present invention, and FIG. 3B illustrates FIG. 3A is a schematic front view of the light source module 302. At least one difference between this embodiment and the second embodiment is that the bump 114 has two opposite side surfaces 115, wherein the side surface 115 is perpendicular to the light incident surface 106 of the light guide plate 104, that is, the extending direction of the side surface 115 The extending directions of the light guide plate 104 and the light incident surface 106 are perpendicular to each other. The first circuit board 120 and the second circuit board 122 are respectively located on at least the side surface 115. Although the first circuit board 120 and the second circuit board 122 shown in FIG. 3A are located on the surface of the body 112 and the side surface 115 of the bump 114, in other embodiments, the first circuit board 120 and the first circuit board 120 The two circuit boards 122 may be located only on the side surface 115 of the bump 114.

On the other hand, in this embodiment, the first light source 130 and the second light source 132 are side view light-emitting diodes. Further, the first light source 130 is disposed on a surface of the first circuit board 120, the surface is facing away from the side surface 115, and a connection interface between the first light source 130 and the first circuit board 120 A light emitting surface 131 is adjacent to each other. Similarly, the second light source 132 is disposed on the surface of the second circuit board 122, and this surface faces away from the side surface 115, and the connection interface between the second light source 132 and the second circuit board 122 and the second light source 132 The two light emitting surfaces 133 are adjacent to each other.

In addition, in the light source module 302 of this embodiment, the arrangement relationship of distance D <distance d1 and distance D <distance d2 is still maintained, where the distance D is the minimum distance between the bump 114 and the light guide plate 104, and the distance d1 is the first light source. The minimum distance between 130 and the light guide plate 104, and the distance d2 is the minimum distance between the second light source 132 and the light guide plate 104. Therefore, the first light source 130 or the second light source 132 can still avoid contact with the light guide plate 104, thereby preventing the components from being damaged due to the collision. The thickness of the circuit board connection portion 124 is also maintained not more than the distance D.

Please see FIG. 3A and FIG. 3C again, where FIG. 3C shows a schematic front view of the first circuit board 120, the second circuit board 122, and the circuit board connecting portion 124 in FIG. 3A, and FIG. The first circuit board 120, the second circuit board 122, and the circuit board connection portion 124 are illustrated before being bent and assembled. In this embodiment, the first light source 130 is located between two of the four fold lines 128, and the second light source 132 is located between the other two of the four fold lines 128, and the first light emitting surface 131 and the first light source 130 of the first light source 130 are Second light emitting surface of two light sources 132 133 are facing each other before bending.

Next, please see FIGS. 3A and 3B again. After the first circuit board 120, the second circuit board 122, and the circuit board connection portion 124 are bent, the combination of the first light source 130 and the second light source 132 is still one. The two light source arrays, and the first light emitting surface 131 of the first light source 130 and the second light emitting surface 133 of the second light source 132 are the light incident surface 106 facing the light guide plate 104.

Please refer to FIG. 4A and FIG. 4B, where FIG. 4A illustrates a schematic side view of a backlight module 100 composed of a light guide plate 104 and a light source module 402 according to a fourth embodiment of the present invention, and FIG. 4B illustrates FIG. 4A is a schematic front view of the light source module 402. At least one difference between this embodiment and the second / third embodiment is that there are a plurality of first light sources in the first light-emitting area A1 in this embodiment, and a plurality of and second light sources in the second light-emitting area A2.

Specifically, in this embodiment, in the first light-emitting area A1, part of the first light source is a forward-emitting diode, and part of the first light source is a side-emitting diode. For example, the first light source 130a is a forward light emitting diode, and the first light source 130b is a lateral light emitting diode. In the second light-emitting area A2, part of the second light source is a forward light-emitting diode, and part of the second light source is a side-light emitting diode. For example, the second light source 132a is a forward light emitting diode, and the second light source 132b is a lateral light emitting diode. Therefore, the combination of the first light source and the second light source can be regarded as a four-column light source array. Through this light source array, the light brightness provided by the light source module 402 can be further improved.

In addition, in the light source module of this embodiment, the arrangement relationship of distance D <distance d1 and distance D <distance d2 is still maintained, where the distance D is the minimum distance between the bump 114 and the light guide plate 104, and the distance d1 is the first light source 130a Or 130b The minimum distance between one of the light guide plates 104 and the light guide plate 104, and the distance d2 is the minimum distance of one of the second light sources 132a or 132b closest to the light guide plate 104 and the light guide plate 104. Therefore, the first light source or the second light source can still avoid contact with the light guide plate 104, thereby preventing the components from being damaged due to the collision. The thickness of the circuit board connection portion 124 is also maintained not more than the distance D.

In addition, the first circuit board 120, the second circuit board 122, and the circuit board connection portion 124 are still integrally formed circuit boards, and they can bend the first circuit board 120, the second circuit board 122, and the circuit board. The connecting portion 124 is covered on the lamp cover 110, which is not repeated here.

Please refer to FIG. 5A and FIG. 5B. FIG. 5A illustrates a schematic side view of a backlight module 100 composed of a light guide plate 104 and a light source module 502 according to a fifth embodiment of the present invention, and FIG. 5B illustrates FIG. 5A is a schematic front view of the light source module 502. At least one difference between this embodiment and the fourth embodiment is that the lamp cover 110 of this embodiment further includes a first side wall 116 and a second side wall 117, wherein the body 112, the bump 114, the first side wall 116 and the second side wall of the lamp cover 110 The side wall 117 is integrally formed.

The first side wall 116 and the second side wall 117 extend from the main body 112 toward the light incident surface 106 of the light guide plate 104 along the long axis direction DL of the lamp cover 110. There is at least one gap between the first side wall 116 and the bump 114. There is at least another gap between the second sidewall 117 and the bump 114. For example, there is a gap G between the second sidewall 117 and the bump 114. That is, the horizontal cross section of the lamp cover 110 of the first to fourth embodiments is convex, and the horizontal cross section of the lamp cover 110 of the present embodiment is chevron.

On the other hand, in this embodiment, the first circuit board 120 is at least The surface of the first sidewall 116 facing the bump 114 is covered, and the second circuit board 122 covers at least the surface of the second sidewall 117 facing the bump 114. Specifically, a one-piece circuit board formed by the first circuit board 120, the second circuit board 122, and the circuit board connection portion 124 covers the surface of the first side wall 116 facing the bump 114, and the direction of the second side wall 117 is convex. The surface of the block 114, the surface of the body 112 facing the light incident surface 106 of the light guide plate 104, the two side surfaces 115 of the bump 114, and the surface of the bump 114 facing the light incident surface 106 of the light guide plate 104.

In addition, there are a plurality of first light sources in the first light-emitting area A1, and a plurality of and second light sources in the second light-emitting area A2. In the first light-emitting area A1, part of the first light source is a forward light-emitting diode, and part of the first light source is a side-light-emitting diode. For example, the first light source 130 a disposed on the surface of the first circuit board 120 facing away from the body 112 is a forward light emitting diode, and the first light source disposed on the surface of the first circuit board 120 facing away from the bump 114. 130b is a lateral light emitting diode, and the first light source 130c disposed on the surface of the first circuit board 120 facing away from the first side wall 116 is a lateral light emitting diode. In the second light-emitting area A2, part of the second light source is a forward light-emitting diode, and another part of the second light source is a side-light-emitting diode. For example, the second light source 132 a disposed on the surface of the second circuit board 122 facing away from the body 112 is a forward light emitting diode, and the second light source disposed on the surface of the second circuit board 122 facing away from the bump 114. 132b is a lateral light emitting diode, and the second light source 132c disposed on the surface of the second circuit board 122 facing away from the second side wall 117 is a lateral light emitting diode. Therefore, the combination of the first light source 130 and the second light source 132 can be regarded as a six-column light source array. Through this light source array, the light brightness provided by the light source module 502 can be further improved.

In addition, in the light source module of this embodiment, the distance D < Distance d1 and distance D <distance d2, where distance D is the minimum distance between the bump 114 and the light guide plate 104, and distance d1 is the one of the first light sources 130a, 130b, or 130c that is closest to the light guide plate 104 and the light guide plate The minimum distance of 104, and the distance d2 is the minimum distance of one of the second light sources 132a, 132b, or 132c closest to the light guide plate 104 and the light guide plate 104. Therefore, the first light source or the second light source can still avoid contact with the light guide plate 104, thereby preventing the components from being damaged due to the collision. The thickness of the circuit board connection portion 124 is also maintained not more than the distance D.

In addition, the first circuit board 120, the second circuit board 122, and the circuit board connection portion 124 are still integrally formed circuit boards, and they can bend the first circuit board 120, the second circuit board 122, and the circuit board. The connecting portion 124 is covered on the lamp cover 110, which is not repeated here.

Please refer to FIG. 6, which is a schematic side view of a backlight module 100 composed of a light guide plate 104 and a light source module 602 according to a sixth embodiment of the present invention. At least one difference between this embodiment and the fifth embodiment is that the lamp cover 110 of this embodiment has a larger size, and the first side wall 116 and the second side wall 117 of the lamp cover 110 extend from the body 112 toward the light guide plate 104 and are respectively It extends to opposite sides of the light guide plate 104.

The first side wall 116 and the second side wall 117 extending to opposite sides of the light guide plate 104 can prevent the light guide plate 104 from being displaced from the set position. In addition, the positions of the first sidewall 116 and the second sidewall 117 depicted in FIG. 6 are merely examples. In other embodiments, the first side wall 116 and the second side wall 117 may also extend from the body 112 toward the light guide plate 104 and respectively extend to opposite sides of the light guide plate 104 and contact the two opposite surfaces of the light guide plate 104 to The light guide plate 104 is clamped between the first side wall 116 and the second side wall 117. The configuration of other components of the light source module 602 may be The light source module 502 is the same as the light source module 502 of the fifth embodiment, and is not repeated here.

In summary, the light source module of the present invention can divide the lampshade into a first light-emitting area and a second light-emitting area by a bump, wherein the first light-emitting area and the second light-emitting area are respectively provided with a first light source and a second light source. , So that the combination of the first light source and the second light source can be a light source array in the light source module, thereby improving the brightness provided by the light source module. On the other hand, the backlight module is disposed on one side of the light guide plate. The minimum distance between the bump and the light guide plate is smaller than the minimum distance between the first light source and the light guide plate and the minimum distance between the second light source and the light guide plate. A light source or a second light source is in contact with the light guide plate, thereby preventing the first light source or the second light source from damaging its components due to collision. Furthermore, the light source module further includes a circuit board connecting portion connecting the first circuit board and the second circuit board, wherein the first circuit board, the second circuit board, and the circuit board connecting portion are integrally formed circuit boards, so that the light source module The number of circuit boards is one, which simplifies the assembly process because the number of components used is reduced.

In addition, as mentioned above, the light source module of the present invention may be a replaceable side-type light source module. Those skilled in the art to which the present invention pertains may view the dimensions, specifications, or other requirements. The light source modules of different embodiments are placed in the backlight module for replacement.

Although the present invention has been disclosed in various embodiments as above, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and retouches without departing from the spirit and scope of the present invention. The scope of protection shall be determined by the scope of the attached patent application.

Claims (10)

A light source module is disposed on a light incident surface of a light guide plate, and the light source module includes: a lampshade including a body and a protrusion integrally formed of the same material, wherein the protrusion is along the length of the lampshade The axial direction extends from the body toward the light incident surface of the light guide plate, and the convex block has two opposite side surfaces, the side surfaces are perpendicular to the light incident surface of the light guide plate, and the convex block will The lampshade is divided into a first light emitting area and a second light emitting area, wherein the minimum distance between the bump and the light incident surface of the light guide plate is D; a first circuit board and a second circuit board are respectively disposed on the The first light emitting area and the second light emitting area of the lampshade; at least one first light source is disposed on the first circuit board, and a first light emitting surface of one of the first light sources faces the light incident surface of the light guide plate. Wherein the minimum distance between the first light source and the light incident surface of the light guide plate is d1, where D <d1; and at least one second light source is disposed on the second circuit board, and one of the second light sources is second The light emitting surface faces the light incident surface of the light guide plate, wherein the second light source and the light guide The minimum distance of the light incident surface of the light plate is d2, where D <d2. For example, the light source module of the first patent application scope, wherein the first circuit board and the second circuit board are located on a surface of the body facing the light incident surface of the light guide plate, wherein the first light source and the second light source A top view light-emitting diode, the first light source is disposed on a surface of the first circuit board facing the light incident surface of the light guide plate, and the second light source is disposed on the second The surface of the circuit board facing the light incident surface of the light guide plate. For example, the light source module of the first patent application scope, wherein the first circuit board and the second circuit board are respectively located on the side surfaces, and the first light source and the second light source are lateral light emitting diodes ( side view light-emitting diode), the first light source is disposed on a surface of the first circuit board facing away from the side surfaces, and the second light source is disposed on a surface of the second circuit board facing away from the side surfaces on. For example, the light source module of the first patent application scope, wherein the first circuit board and the second circuit board are disposed on the surface of the body facing the light incident surface of the light guide plate, and are respectively located opposite to the bump. On both sides. For example, the light source module of the first patent application scope further includes: a circuit board connection portion, wherein the two opposite sides of the circuit board connection portion are respectively connected to the first circuit board and the second circuit board, and the circuit board is connected The portion covers the bump. For example, the light source module of the fifth scope of the patent application, wherein the first circuit board, the second circuit board and the circuit board connecting portion are integrally formed. For example, the light source module with the scope of patent application No. 6 further includes a protruding structure, which is formed by bending the combination of the first circuit board, the second circuit board and the circuit board connection portion, wherein the bump Located within the protruding structure. For example, the light source module of the first patent application scope, wherein the first light emitting area has a plurality of the first light sources, and some of the first light sources are top view light-emitting diodes. , The other part of the first light sources are side view light-emitting diodes, wherein the second light emitting area has a plurality of the second light sources, and some of the second light sources are forward The light emitting diodes, and the other part of the second light sources are lateral light emitting diodes. For example, the light source module of the first patent application scope, wherein the lampshade further comprises: a first side wall and a second side wall, extending along the long axis direction of the lampshade from the body toward the light incident surface of the light guide plate. Out, at least one gap exists between the first side wall and the bump, and at least another gap exists between the second side wall and the bump. For example, the light source module according to item 9 of the application, wherein the first circuit board covers at least the surface of the first sidewall facing the bump, the second circuit board covers at least the surface of the second sidewall facing the bump, and The first light source and the second light source are side view light-emitting diodes. The first light source is disposed on a surface of the first circuit board facing away from the first side wall. The light source is disposed on a surface of the second circuit board facing away from the second side wall.