TWI566014B - Light guiding panel and display device - Google Patents

Description

Light guide plate and display device

The present invention relates to a light guide plate and a display device, and more particularly to a light guide plate and a display device having a light guide plate.

With the advancement of technology and the popularity of mobile networks, consumers are also demanding portable devices such as tablets or notebooks. In addition to high processing performance or light and easy to carry, With the improvement of taste, the design has gradually become an important consideration for consumers when purchasing electronic products.

In order to enhance consumers' desire to purchase, the industry has launched research to enhance the aesthetic design. For example, an additional light-emitting element is embedded in the outer casing, and an opening is made in the outer casing to allow the light of the light-emitting element to be self-opened. The hole is transparent, in order to increase the design aesthetic of the product appearance, but in order to maintain the flatness and integrity of the outer frame shell, the operator will additionally add a design piece at the opening to fill the opening space.

However, the setting of the appearance member not only increases the manufacturing cost, but also reduces the assembly efficiency by the process of installing the appearance member.

In view of this, the present invention provides a light guide plate and a display device, thereby reducing manufacturing costs and improving the design of the product.

A display device according to the present invention includes a first housing, a display panel, a backlight assembly, a light guide plate and a second housing. The display panel is disposed on the first housing. The backlight assembly is connected to the display panel. The light guide plate includes a plate portion and a protruding portion. The plate portion has a first side and a second side opposite to each other. The first side has a first light guiding surface. The second side has a second light guiding surface and a light incident surface connected to each other. The protruding portion protrudes from the first light guiding surface of the plate portion. The protrusion has a light exit surface. The light-emitting surface faces away from the light-incident surface of the plate portion. The backlight assembly is adjacent to the light incident surface of the plate portion. The backlight assembly is configured to emit a light, and the light can enter the plate portion from the light incident surface of the plate portion and be emitted from the light exit surface of the protruding portion through the guiding of the first light guiding surface and the second light guiding surface. The second housing covers the first light guiding surface of the plate portion. The second housing has an opening. The protruding portion of the light guide plate is located at the opening so that the light exiting surface of the protruding portion is exposed from the opening.

A light guide plate according to the present invention includes a plate portion and a protruding portion. The plate portion has a first side and a second side opposite to each other. The first side has a first light guiding surface. The second side has a second light guiding surface and a light incident surface connected to each other. The protruding portion protrudes from the first light guiding surface of the plate portion. The protrusion has a light exit surface. The light-emitting surface faces away from the light-incident surface of the plate portion, wherein the light-incident surface is configured to receive a light emitted by a light source, so that the light can enter the plate portion from the light-incident surface of the plate portion and pass through the first light-guiding surface and The guiding surfaces of the two light guiding surfaces are emitted from the light emitting surface of the protruding portion.

In the light guide plate and the display device disclosed in the present invention, the light-emitting surface of the light guide plate can be directly exposed to the electronic product by the protruding portion of the light guide plate, and the light-emitting surface of the light guide plate can be directly exposed to the electronic product, thereby improving the aesthetic effect of the design. Moreover, the protruding portion can fill the opening of the casing to maintain the flatness of the overall appearance, thereby saving the manufacturing cost which is conventionally required to additionally add the appearance component, and improving the assembly efficiency.

The above description of the present invention and the following description of the embodiments are intended to illustrate and explain the principles of the invention, and to provide a further explanation of the scope of the invention.

In the following, the present invention will be described by way of examples only, and the present invention will be further described in detail, but the scope of the present invention is not limited by any point of view.

It is to be noted that the present invention is a simplified schematic and is merely illustrative of the basic structure of the invention. Therefore, only the components related to the present invention are labeled in the drawings, and the components are not drawn in the actual number, shape, size ratio, etc., and the actual size is actually an option. The design, and its component layout form may be more complicated, first described.

Please refer to Figures 1~3, 4A and 4B. 1 is a schematic diagram of a display device according to an embodiment of the present invention. 2 is an exploded view of a display device according to an embodiment of the present invention. 3 is a partial side cross-sectional view showing a display device according to an embodiment of the present invention. 4A and 4B are partial enlarged views of Fig. 3 of the present invention, respectively. This embodiment provides a display device 1 , for example, a liquid crystal display device, which can be applied to an electronic product such as a notebook computer or a tablet computer.

In the embodiment, the display device 1 includes a first housing 10, a display panel 20, a backlight assembly 30, a light guide plate 40, and a second housing 50.

The display panel 20 is disposed on the first casing 10 in terms of relative position. The backlight assembly 30 is adjacent and faces the display panel 20. The light guide plate 40 is disposed on the backlight assembly 30. The second housing 50 is overlaid on the light guide plate 40 as an outer casing of the display device 1.

Further, in this embodiment or other embodiments, the backlight assembly 30 includes a light source (not shown) such as a cold cathode tube or a light emitting diode (LED) and directs the light source to the display panel 20 . Light guide plate. Therefore, the backlight assembly 30 functions as a light source of the display panel 20 and can emit light through the display panel 20 to display an image frame.

A portion of the light guide plate 40 is stacked on the backlight assembly 30. In detail, in the embodiment, the light guide plate 40 includes a plate portion 410 and a protruding portion 430. The plate portion 410 has a first side 410a and a second side 410b opposite to each other. The first side 410a has a first light guiding surface 410a1. The second side 410b has a second light guiding surface 410b1 and a light incident surface 410b2. The backlight assembly 30 is adjacent to and faces the light incident surface 410b2. In this embodiment, the second light guiding surface 410b1 is coplanar with the light incident surface 410b2, but is not limited thereto.

In addition, the plate portion 410 further has a first reflecting surface 410c and a second reflecting surface 410d opposite to each other. The first reflective surface 410c and the second reflective surface 410d are located between the first side 410a and the second side 410b. Specifically, the first reflective surface 410c is interposed between the first light guiding surface 410a1 and the light incident surface 410b2 of the plate portion 410. The second reflective surface 410d is interposed between the protruding portion 430 and the second light guiding surface 410b1 of the plate portion 410.

The protruding portion 430 protrudes integrally from the first light guiding surface 410a1 of the plate portion 410. The protruding portion 430 has a light emitting surface 430a that faces away from the light incident surface 410b2 of the plate portion 410.

In the embodiment, the first reflective surface 410c corresponds to the light incident surface 410b2 of the plate portion 410, and the second reflective surface 410d corresponds to the light exit surface 430a of the protruding portion 430. In detail, the first reflecting surface 410c and the light incident surface 410b2 have an angle θ 1 between 25 degrees and 45 degrees. For example, in the embodiment, the first reflecting surface 410c of the plate portion 410 and the light incident surface 410b2 have an angle θ 1 of 30 degrees, so that the first reflecting surface 410c is projected on the plane of the light incident surface 410b2. The orthographic projection has at least a portion overlapping the light incident surface 410b2. The second reflecting surface 410d and the second light guiding surface 410b1 have an angle θ 2 between 132 degrees and 138 degrees. For example, in the embodiment, the second reflecting surface 410d of the plate portion 410 and the second light guiding surface 410b1 have an angle θ 2 of 135 degrees, so that the second reflecting surface 410d is projected on the plane of the light emitting surface 430a. The orthographic projection has at least a portion overlapping the light exit surface 430a.

Then, as shown in FIG. 2 and FIG. 3, the second housing 50 is disposed on the first light guiding surface 410a1 of the plate portion 410. The second housing 50 has an opening 51 through which the protruding portion 430 is disposed. The light emitting surface 430a of the protruding portion 430 is exposed from the opening 51 to the outside of the second housing 50, so that the light generated by the backlight assembly 30 can pass through the first reflective surface 410c, the first light guiding surface 410a1, and the second light guiding layer. The surface 410b1 and the second reflecting surface 410d are guided to be used as an atmosphere lamp or a decorative lamp. Moreover, the protruding portion 430 can fill the space of the opening 51, and can maintain the appearance of the second casing 50 on a flat surface. It will be understood that the shape of the protrusion 430 and the opening 51 are not intended to limit the invention, as long as the two are matched, it is within the scope of the invention.

In addition, although the backlight assembly 30 is used as the light source of the light guide plate 40, it is not intended to limit the present invention. For example, in other embodiments, a light-emitting element such as an LED other than the backlight assembly 30 may be used as the light guide plate. 40 light source.

Moreover, the range in which the backlight unit 30 as the light source and the light guide plate 40 are overlapped with each other affects the amount of light entering the light guide plate 40. The user can adjust the range of the light guide plate 40 stacked on the backlight assembly 30 to adjust the The brightness of the light transmitted by the light guide plate 40.

In addition, in the embodiment, at least one of the first light guiding surface 410a1 and the second light guiding surface 410b1 is a matte surface, a grain surface or a rough surface, which can increase the uniformity of light in the light guide plate 40, but Not limited to this.

Moreover, in the embodiment, the first reflective surface 410c and the second reflective surface 410d are polished surfaces that are polished to help increase the reflection effect of light in the light guide plate 40.

Furthermore, in the present embodiment, as shown in FIGS. 3 and 4B, the display device 1 further includes an ink layer 90 disposed on the light exit surface 430a of the protruding portion 430. The material of the ink layer 90 is a transparent or colored ink. Therefore, the light emitted from the light exit surface 430a can be rendered into colored light according to the color of the ink layer 90. However, it will be understood that the arrangement of the ink layer 90 is optional and is not intended to limit the invention.

In summary, the display device and the light guide plate disclosed in the present invention are designed such that the protruding portion of the light guide plate is disposed in the opening of the outer casing, and the light emitting surface of the light guide plate can be directly exposed outside the electronic product. The utility model achieves the effect of improving the aesthetics of the design, and the protruding portion can fill the opening of the casing to maintain the flatness of the overall appearance, thereby saving the manufacturing cost caused by the traditional addition of the appearance component and improving the assembly efficiency.

Although the embodiments of the present invention are disclosed above, it is not intended to limit the present invention, and those skilled in the art, regardless of the spirit and scope of the present invention, the shapes, configurations, and features described in the scope of the present application. And the number of modifications may be made, and the scope of patent protection of the present invention shall be determined by the scope of the patent application attached to the specification.

1‧‧‧ display device
10‧‧‧ first housing
20‧‧‧ display panel
30‧‧‧Backlight assembly
40‧‧‧Light guide plate
50‧‧‧ second housing
51‧‧‧Opening
90‧‧‧Ink layer
410‧‧‧ Board Department
410a‧‧‧ first side
410a1‧‧‧First light guide
410b‧‧‧ second side
410b1‧‧‧second light guide
410b2‧‧‧Into the glossy surface
410c‧‧‧first reflective surface
410d‧‧‧second reflecting surface
430‧‧‧ highlights
430a‧‧‧ illuminating surface θ1, θ2‧‧‧ angle

1 is a schematic diagram of a display device according to an embodiment of the present invention. 2 is an exploded view of a display device according to an embodiment of the present invention. 3 is a partial side cross-sectional view showing a display device according to an embodiment of the present invention. 4A and 4B are partial enlarged views of Fig. 3 of the present invention, respectively.

1‧‧‧ display device

10‧‧‧First housing

20‧‧‧ display panel

30‧‧‧Backlight assembly

40‧‧‧Light guide plate

50‧‧‧ second housing

51‧‧‧Opening

90‧‧‧Ink layer

410‧‧‧ Board Department

410a‧‧‧ first side

410a1‧‧‧First light guide

410b‧‧‧ second side

410b1‧‧‧second light guide

410b2‧‧‧Into the glossy surface

410c‧‧‧first reflective surface

410d‧‧‧second reflecting surface

430‧‧‧ highlights

Claims (10)

A display device includes: a first housing; a display panel disposed on the first housing; a backlight assembly coupled to the display panel; and a light guide panel including: a panel portion having opposite sides a first side and a second side and a first reflecting surface and a second reflecting surface opposite to each other, the first side has a first light guiding surface, and the second side has a second light guiding surface and a second side a light incident surface, the first reflective surface being between the first light guiding surface of the plate portion and the light incident surface, the first reflective surface corresponding to the light incident surface; and a protruding portion protruding from the plate a first light guiding surface of the portion, wherein the second reflecting surface of the plate portion is between the protruding portion and the second light guiding surface of the plate portion, the protruding portion has a light emitting surface, and the light emitting surface faces away The light incident surface of the plate portion, the second reflective surface corresponding to the light emitting surface, the backlight assembly is adjacent to the light incident surface of the plate portion, the backlight assembly is configured to generate a light, and the light is self- The light incident surface of the plate portion enters the plate portion and passes through the first reflective surface, the first light guiding surface, the second light guiding surface, and the a guiding surface of the two reflecting surfaces is emitted from the light emitting surface of the protruding portion; and a second housing covering the first light guiding surface of the plate portion, the second housing having an opening, the guiding The protruding portion of the light plate is located at the opening such that the light emitting surface of the protruding portion is exposed from the opening. The display device of claim 1, wherein the first reflecting surface of the plate portion and the light incident surface have an angle of between 25 degrees and 45 degrees. The display device of claim 2, wherein the first reflecting surface of the plate portion and the light incident surface have an angle of 30 degrees. The display device of claim 2, wherein the second reflecting surface of the plate portion and the second light guiding surface have an angle of between 132 degrees and 138 degrees. The display device of claim 2, wherein the second reflecting surface of the plate portion and the second light guiding surface have an angle of 135 degrees. The display device of claim 1, wherein at least one of the first light guiding surface and the second light guiding surface is a matte surface, a grain surface or a rough surface. The display device according to claim 1, further comprising an ink layer disposed on the light emitting surface of the protruding portion. The display device of claim 7, wherein the material of the ink layer is a transparent or colored ink. The display device of claim 1, wherein the second light guiding surface of the plate portion is coplanar with the light incident surface. A light guide plate includes: a plate portion having a first side and a second side opposite to each other and a first reflecting surface and a second reflecting surface opposite to each other, the first side having a first light guiding surface The second side has a second light guiding surface and a light incident surface connected to each other, and the first reflecting surface is between the first light guiding surface of the plate portion and the light incident surface, the first reflection a surface corresponding to the light incident surface; and a protrusion protruding from the first light guiding surface of the plate portion, wherein the second reflecting surface of the plate portion is between the protruding portion and the second light guiding portion of the plate portion Between the faces, the protruding portion has a light emitting surface facing away from the light incident surface of the plate portion, and the second reflecting surface corresponds to the light emitting surface, wherein the light incident surface is configured to receive a light source and emit a light such that the light enters the plate portion from the light incident surface of the plate portion and passes through the first reflective surface, the first light guiding surface, the second light guiding surface, and the second reflecting surface The light exiting from the protruding portion of the protruding portion is guided.