TWM609736U - Light source module and display device - Google Patents

Abstract

A light source module includes a light source assembly, a frame, and a light shielding sheet. The light source assembly includes a light guide plate, a light source, and at least one optical film. The light guide plate has a light incident surface and a light exit surface, and the light incident surface is connected to the light exit surface. The light source is disposed beside the light incident surface. The at least one optical film is disposed on the light exit surface. The frame surrounds the light source assembly. The light shielding sheet is disposed on the frame. The light shielding sheet has a first end portion and a second end portion relative to the first end portion. The first end portion is connected to the frame, and the second end portion covers a part of the at least one optical film and has a convex portion. The convex portion is convex toward the at least one optical film. A display device having the light source module is further provided.

Description

Light source module and display device

This creation relates to a light source module, and in particular relates to a light source module that can be used in a display device and a display device using the light source module.

At present, as a display component of electronic equipment, liquid crystal display devices have been widely used in various electronic products. With the development of thinner and lighter electronic products, the frame of the liquid crystal display device is designed to be narrower and narrower. The light source module is an important part of the liquid crystal display device, and the frame of the light source module is bound to become narrower and narrower.

In order to avoid the light leakage phenomenon of the light source module around the frame, in the prior art, a light-shielding film is often arranged on the frame to block the light directly emitted by the light source or emitted by an optical film such as a light guide plate or a diffuser. Light leaks near the border. In terms of design, if the area of the shading sheet is larger, the light leakage phenomenon can be reduced. However, when the frame design of the light source module is narrowed, the larger the area of the light-shielding sheet is, the risk of exceeding the frame line will increase.

On the other hand, optical films such as light guide plates or diffusers in the light source module cannot be placed in the center due to assembly tolerances when they are configured, and light leakage will be more serious due to assembly tolerances.

This "prior art" paragraph is only used to help understand the content of this creation, so the content disclosed in the "prior art" may contain some conventional technologies that do not constitute the knowledge of those with ordinary knowledge in the technical field. In addition, the content disclosed in the "prior art" does not represent the content or the problem to be solved by one or more embodiments of this creation, nor does it mean that it has been used by a person with ordinary knowledge in the technical field before this creation application. Know or recognize.

This creation provides a light source module that can reduce edge light leakage.

This creation provides a display device that can reduce edge light leakage.

Other purposes and advantages of this creation can be further understood from the technical features disclosed in this creation.

In order to achieve one or part or all of the above objectives or other objectives, the light source module provided by an embodiment of the invention includes a light source assembly, a frame, and a light-shielding sheet. The light source assembly includes a light guide plate, a light source and at least one optical film. The light guide plate has a light entrance surface and a light exit surface, and the light entrance surface is connected to the light exit surface. The light source is arranged beside the light incident surface. At least one optical film is disposed on the light-emitting surface. The frame surrounds the light source assembly. The shading sheet is arranged on the frame. The shading sheet has a first end and a second end opposite to each other. The first end is connected to the frame, and the second end covers a part of at least one optical film and has a protrusion. The protruding part protrudes in the direction of at least one optical film.

In an embodiment of the present creation, the above-mentioned light source module further includes a back plate, and the light source assembly and the frame are disposed on the back plate.

In an embodiment of the present creation, the height between the position where the frame is connected to the first end and the back plate is greater than the maximum height between the light source assembly and the back plate.

In an embodiment of the present invention, there is a gap between the above-mentioned protrusion and the at least one optical film.

In an embodiment of the present invention, the above-mentioned at least one optical film has a first side, a second side, a third side, and a fourth side. The first side and the second side are connected to the third side and the fourth side, respectively. The first side is opposite to the second side, and the third side is opposite to the fourth side. The light source is located beside the first side. The second end of the light shield covers the second side, the third side and the fourth side.

In an embodiment of the present invention, there is a gap between the aforementioned frame and at least one optical film, and the light-shielding sheet further covers the gap.

In an embodiment of the present creation, the orthographic projection of the above-mentioned protrusion is located on at least one optical film.

In an embodiment of the present invention, the above-mentioned protrusion is adjacent to the side edge of the second end.

In an embodiment of the present creation, the above-mentioned light source module further includes a reflective sheet, which is disposed under the light guide plate.

In order to achieve one or part or all of the above-mentioned purposes or other purposes, the display device provided by an embodiment of the invention includes a display panel and the above-mentioned light source module. The display panel is arranged on the light emitting side of the light source module.

In the light source module of this creative embodiment, the light-shielding sheet is disposed on the frame, and the second end portion covers at least a part of the optical film, so that the light-shielding sheet can shield the light guide plate and the edge of the optical film near the frame from light leakage , And the second end has a protruding portion protruding in the direction of at least one optical film, which can further block lateral light, and can reduce edge light leakage even in the case of assembly tolerance or narrow frame. Since the display device of this creative embodiment uses the above-mentioned light source module, the edge light leakage phenomenon can be reduced.

In order to make the above and other objectives, features and advantages of this creation more obvious and easy to understand, the following will specifically cite preferred embodiments, in conjunction with the accompanying drawings, and describe them in detail as follows.

The aforementioned and other technical content, features and effects of this creation will be clearly presented in the following detailed description of a preferred embodiment with reference to the drawings. The directional terms mentioned in the following embodiments, for example: up, down, left, right, front or back, etc., are only directions for referring to the attached drawings. Therefore, the directional terms used are used to illustrate and not to limit this creation.

FIG. 1A is a schematic cross-sectional view of a light source module according to an embodiment of the invention. FIG. 1B is an enlarged schematic diagram of area A in FIG. 1A. FIG. 1C is a schematic top view of a light source module according to an embodiment of the invention. 1A to 1C, the light source module 10 of this embodiment includes a light source assembly 100, a frame 200, a shading sheet 300, and a back plate 400. The light source assembly 100 includes a light guide plate 110, a light source 120 and at least one optical film 130. The light guide plate 110 has a light incident surface 111 and a light exit surface 112, and the light incident surface 111 is, for example, connected to the light exit surface 112. The light source 120 is disposed beside the light incident surface 111 and is suitable for providing light L to be incident on the light incident surface 111. At least one optical film 130 is disposed on the light-emitting surface 112. The frame 200 surrounds the light source assembly 100, for example, the frame 200 surrounds the other side of the light source assembly 100 where the light source 120 is not configured. FIG. 1A is a schematic cross-sectional view of the light source module 100, so the frame 200 is only shown on the side away from the light source 120 However, those skilled in the art should know the structure of the frame 200 from the text of the description and the schematic top view of FIG. 1C. However, the present creation is not limited to this. In other embodiments, the frame 200 further surrounds the side of the light source assembly 100 where the light source 120 is configured. There is a gap G1 between the frame 200 and the at least one optical film 130, for example. The light-shielding sheet 300 is disposed on the frame 200, and the light-shielding sheet 300 also covers the gap G1, for example. The material of the light-shielding sheet 300 includes, for example, polyethylene terephthalate or other materials with a light-shielding effect, but is not limited to this. In other embodiments, the light-shielding sheet 300 may also have a light-absorbing coating or a light-reflecting coating. material. The back plate 400 has, for example, a carrying surface 410, and the light source assembly 100 and the frame 200 are, for example, disposed on the carrying surface 410 of the back plate 400.

The light source 120 is, for example, a light emitting element having a plurality of point light sources 121, where the point light sources 121 are, for example, light emitting diodes (LEDs). Specifically, for example, it is a grain-level nitride light-emitting diode crystal grain that emits blue light at a dominant wavelength, but it is not limited to this. The light source 120 may also be other types of light-emitting elements, such as lamp tubes, and the invention does not limit the types of light sources.

The at least one optical film 130 is, for example, a polarization enhancement film, a diffuser film, a thin film or a composite film, etc., but it is not limited thereto. The present invention does not limit the number of at least one optical film 130, which can be one or more sheets. In this embodiment, three optical films 131, 132, and 133 are taken as an example. In addition, depending on the function of the optical film, the optical films 131, 132, and 133 may also be of different types.

The light source assembly 100 further includes, for example, a reflective sheet 140 disposed under the light guide plate 110 to reflect light L leaking from under the light guide plate 110 back into the light guide plate 110 to improve light utilization efficiency. The design and configuration of the light-shielding sheet 300 of this embodiment will be described in detail below.

The shading sheet 300 has a first end 310 and a second end 320 opposite to each other. The first end 310 is, for example, connected to the frame 200. For example, the second end 320 covers a part of at least one optical film 130 and has a protrusion 321. The protruding portion 321 protrudes toward the at least one optical film 130. In other words, the protruding portion 321 is disposed on the side of the light shielding sheet 300 facing the at least one optical film 130. When the second end 320 of the light-shielding sheet 300 covers a part of at least one optical film 130, the second end 320, for example, also covers the gap G1, or is between the first end 310 and the second end 320 The area covers the gap G1.

Considering the tolerance during assembly and avoiding the damage of the optical film 130 caused by the interference of the shading sheet 300 with the at least one optical film 130, the height H1 between the position where the frame 200 is connected to the first end 310 and the bearing surface 410 of the back plate 400 For example, it is greater than the maximum height H2 between the light source assembly 100 and the supporting surface 410 of the back plate 400, so that after the light shielding sheet 300 is disposed on the frame 200, the second end 320 thereof can cover but not interfere with the at least one optical film 130. In addition, there is, for example, a gap G2 between the protrusion 321 and the at least one optical film 130, but it is not limited to this. That is, the height H3 of the protrusion 321 is, for example, smaller than the height difference between the height H1 and the height H2, which also prevents the protrusion 321 from contacting at least one optical film 130 and causing damage to the optical film 130.

In this embodiment, the orthographic projection of the protrusion 321 is, for example, located on at least one optical film 130, which means that the protrusion 321 does not cover the gap G1, but it is not limited to this. In another embodiment, the orthographic projection of the protrusion 321 may also be partially located on the at least one optical film 130 and partially located on the gap G1. In addition, the protruding portion 321 is adjacent to the side edge of the second end portion 320, for example, so that the shape of the light shielding sheet 300 is similar to an L shape, but it is not limited to this. In another embodiment, the protrusion 321 is not adjacent to the side edge of the second end 320, for example, so that the shape of the shading sheet 300 is similar to a T shape. As long as the protrusion 321 can shield the light L emitted from the gap G1 due to the light leakage of the light guide plate 110 or the optical film 130, the present invention does not particularly limit the style of the protrusion 321, and can be adjusted according to design requirements.

In the light source module 10 of this embodiment, the light-shielding sheet 300 is disposed on the frame 200, and the second end 320 covers a part of at least one optical film 130, so that the light-shielding sheet 300 can shield the light guide plate 110 and the optical film 130 in The edge near the frame 200 leaks light and emits light L from the gap G1, and the second end 320 has a convex portion 321 protruding toward the at least one optical film 130, which can further block the lateral light L , Even in the case of assembly tolerance or narrow frame, it can also reduce the phenomenon of edge light leakage.

Please refer to FIG. 1C again, at least one optical film 130 has a first side 134, a second side 135, a third side 136, and a fourth side 137. The first side 134 and the second side 135 are connected between the third side 136 and the fourth side 137 respectively. The first side 134 is opposite to the second side 135, and the third side 136 is opposite to the fourth side 137. The light source 120 is located beside the first side 134, for example. Specifically, since the optical film 130 is less prone to edge light leakage on the side where the light source 120 emits light L, in this embodiment, the second end 320 of the light shielding sheet 300 covers the second side 135 and the third side. The side 136 and the fourth side 137 (the covered second side 135, the third side 136, and the fourth side 137 in FIG. 1C are indicated by dashed lines), that is, the side where the light source 120 is not configured, but not limited thereto. According to different design requirements, the second end 320 of the shading sheet 300 may also cover the first side 134, or the second end 320 of the shading sheet 300 may optionally cover the first side 134, the second side 135, and the third side. At least one of the side 136 and the fourth side 137.

The second end 320 of the shading sheet 300 covers, for example, an entire side of at least one optical film 130. Taking the second side 135 of at least one optical film 130 as an example, the second end 320 of the shading sheet 300 covers an entire side of the second side 135. As shown in FIG. 1C, it is not only a part of the second side 135. However, the present creation is not particularly limited. Considering the edge light leakage, the second end 320 of the light-shielding sheet 300 can also be adjusted to cover the area of at least one optical film 130.

Fig. 2 is a schematic diagram of a display device according to an embodiment of the present creation. Please refer to FIG. 2, the display device 1 of this embodiment includes the light source module 10 and the display panel 20 described above. The display panel 20 is disposed on the light emitting side of the light source module 10. The display panel 20 may be a liquid crystal display panel or other non-self-luminous display panels. The light source module 10 is used to provide a surface light source L1 to the display panel 20 as a display light source. Since the light source module 10 of the display device 1 of this embodiment can reduce the edge light leakage phenomenon, the edge light leakage phenomenon of the display device 1 can also be reduced.

In summary, in the light source module of this creative embodiment, the light-shielding sheet is disposed on the frame, and the second end part covers at least a part of the optical film, so that the light-shielding sheet can shield the light guide plate and the optical film near the frame The second end has a convex part protruding toward at least one optical film, which can further block the lateral light, even in the case of assembly tolerance or narrow frame, it can also reduce The phenomenon of light leakage at the edge. Since the display device of this creative embodiment uses the above-mentioned light source module, the edge light leakage phenomenon can be reduced.

However, the above are only the preferred embodiments of this creation, and should not be used to limit the scope of implementation of this creation, that is, simple equivalent changes and modifications made according to the scope of patent application and new description of this creation, All are still within the scope of this creation patent. In addition, any embodiment of this creation or the scope of the patent application does not have to achieve all the purposes or advantages or features disclosed in the creation. In addition, the abstract part and title are only used to assist in searching for patent documents, not to limit the scope of rights of this creation. In addition, the terms "first" and "second" mentioned in this specification or the scope of the patent application are only used to name the element (element) or to distinguish different embodiments or ranges, and are not used to limit the number of elements. Upper or lower limit.

1: display device 10: Light source module 20: display panel 100: light source assembly 110: Light guide plate 111: Glossy surface 112: Glossy Surface 120: light source 130, 131, 132, 133: optical film 134: First side 135: second side 136: third side 137: The fourth side 140: reflective sheet 200: frame 300: shading sheet 310: first end 320: second end 321: bulge 400: backplane 410: bearing surface G1, G2: gap H1, H2, H3: height L: light L1: Area light source

FIG. 1A is a schematic cross-sectional view of a light source module according to an embodiment of the invention. FIG. 1B is an enlarged schematic diagram of area A in FIG. 1A. FIG. 1C is a schematic top view of a light source module according to an embodiment of the invention. Fig. 2 is a schematic diagram of a display device according to an embodiment of the present creation.

100: light source assembly

110: Light guide plate

130: Optical film

140: reflective sheet

200: frame

300: shading sheet

310: first end

320: second end

321: bulge

400: backplane

410: bearing surface

G1, G2: gap

H1, H2, H3: height

L: light

Claims (10)

A light source module includes: A light source assembly, including: A light guide plate having a light-incident surface and a light-emitting surface, and the light-incident surface is connected to the light-emitting surface; A light source arranged beside the light incident surface; and At least one optical film disposed on the light emitting surface; A frame surrounding the light source assembly; and A light-shielding sheet is disposed on the frame, the light-shielding sheet has a first end portion and a second end portion opposite to each other, the first end portion is connected to the frame, and the second end portion covers the at least one optical film One part has a protruding part, and the protruding part protrudes toward the direction of the at least one optical film. The light source module according to claim 1, further comprising a back plate, and the light source assembly and the frame are disposed on the back plate. The light source module according to claim 2, wherein the height between the position where the frame is connected to the first end and the back plate is greater than the maximum height between the light source assembly and the back plate. The light source module according to claim 1, wherein there is a gap between the protrusion and the at least one optical film. The light source module according to claim 1, wherein the at least one optical film has a first side, a second side, a third side, and a fourth side, and the first side and the second side are respectively connected to Between the third side and the fourth side, the first side is opposite to the second side, the third side is opposite to the fourth side, the light source is located beside the first side, and the first side of the shading sheet The two ends cover the second side, the third side and the fourth side. The light source module according to claim 1, wherein there is a gap between the frame and the at least one optical film, and the shading sheet further covers the gap. The light source module according to claim 1, wherein the orthographic projection of the protrusion is located on the at least one optical film. The light source module according to claim 1, wherein the protruding portion is adjacent to a side edge of the second end portion. The light source module according to claim 1, wherein the light source assembly further includes a reflective sheet disposed under the light guide plate. A display device includes: A light source module, including: A light source assembly, including: A light guide plate having a light-incident surface and a light-emitting surface, and the light-incident surface is connected to the light-emitting surface; A light source arranged beside the light incident surface; and At least one optical film is disposed on the light-emitting surface, A frame surrounding the light source assembly; and A light-shielding sheet is disposed on the frame, the light-shielding sheet has a first end portion and a second end portion opposite to each other, the first end portion is connected to the frame, and the second end portion covers the at least one optical film A part and having a protrusion, the protrusion protrudes toward the direction of the at least one optical film; and A display panel is arranged on a light emitting side of the light source module.

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