TWI578038B - Light guiding panel, light guiding assembly and electronic device - Google Patents

Description

Light guide plate, light guide assembly and electronic device

The invention relates to a light guide plate, a light guide assembly and an electronic device, in particular to a light guide plate, a light guide assembly and an electronic device which can emit light in a ring shape.

With the advancement of technology and the popularity of mobile networks, consumers are demanding more portable electronic products such as tablets or notebooks. In addition to high processing performance or light and easy to carry, With the improvement of personal taste, the design has gradually become an important consideration for consumers when purchasing electronic products, in order to meet the visual experience of using the product to display a professional image or enhance the use.

Therefore, in order to enhance consumers' desire to purchase, the industry has begun to enhance the study of aesthetic design. For example, in a notebook computer, an additional light-transmitting glass is disposed around the touch panel, and a light-emitting component is embedded under the light-transmissive glass to surround the touchpad to create a visual sense of the annular aperture. .

In general, the uniformity of light of the annular aperture is proportional to the number of light-emitting elements disposed under the light-transmissive glass. Although increasing the number of light-emitting elements can increase the light uniformity of the annular aperture, the increase in the number of light-emitting elements increases the manufacturing cost and power consumption. On the other hand, if the number of light-emitting elements is reduced, the manufacturing cost and power consumption are reduced, but the light uniformity of the annular aperture is lowered, so that the visual beauty that the annular aperture should exhibit is lost due to insufficient light uniformity.

In view of the above, the present invention provides a light guide plate, a light guide assembly, and an electronic device, so that the uniformity can be balanced to improve the design of the product while reducing manufacturing cost and power consumption.

A light guiding assembly according to the present invention includes a light guide plate and at least one light source. The light guide plate includes a plate portion and an annular light exit portion. The plate portion has a first light guiding surface, a second light guiding surface and a receiving groove. The first light guiding surface and the second light guiding surface are opposite to each other. The accommodating groove is disposed between the first light guiding surface and the second light guiding surface, so that the plate portion has an inner wall surface forming one of the accommodating grooves. The inner sidewall surface has at least one light incident section. The annular light-emitting portion is connected to the plate portion and surrounds the first light guiding surface of the plate portion. The annular light exiting portion has a light exiting surface. The light exit surface is located on the outer side of the inner wall surface. The light source is located in the accommodating groove and adjacent to at least one light entering section. The light source is used to emit a light. The light can enter the plate portion from the light incident segment and be emitted from the light exit surface of the annular light exit portion via the guiding of the first light guiding surface and the second light guiding surface.

A light guide plate according to the present invention comprises a plate portion and an annular light exit portion. The plate portion has a first light guiding surface, a second light guiding surface and a receiving groove. The first light guiding surface and the second light guiding surface are opposite to each other. The accommodating groove is disposed between the first light guiding surface and the second light guiding surface, so that the plate portion has an inner wall surface forming one of the accommodating grooves, and the inner wall surface has at least one light incident portion. The annular light-emitting portion is connected to the plate portion and surrounds the first light guiding surface of the plate portion. The annular light exiting portion has a light exiting surface. The light exit surface is located on the outer side of the inner wall surface.

An electronic device according to the present invention includes a main body, a light guiding component and a decorative panel. The light guiding component is disposed on the main body. The light guiding component comprises a light guide plate and at least one light source. The light guide plate includes a plate portion and an annular light exit portion. The plate portion has a first light guiding surface, a second light guiding surface and a receiving groove. The first light guiding surface and the second light guiding surface are opposite to each other. The accommodating groove is disposed between the first light guiding surface and the second light guiding surface, so that the plate portion has an inner wall surface forming one of the accommodating grooves. The inner sidewall surface has at least one light incident section. The annular light-emitting portion is connected to the plate portion and surrounds the first light guiding surface of the plate portion. The annular light exiting portion has a light exiting surface. The light exit surface is located on the outer side of the inner wall surface. The light source is located in the accommodating groove and adjacent to at least one light entering section. The light source is used to emit a light. The light can enter the plate portion from the light incident segment and be emitted from the light exit surface of the annular light exit portion via the guiding of the first light guiding surface and the second light guiding surface. The plaque covers the first light guiding surface and the accommodating groove of the plate portion and at least one light source.

In the light guide plate, the light guide assembly and the electronic device disclosed in the present invention, the light of the light source is guided by the above structure of the light guide plate of the present invention, thereby effectively reducing the number of light sources used, and taking into account the scattering of the electronic device. Light uniformity not only enhances the aesthetics of the design, but also solves the problems of traditionally requiring too many light-emitting elements to increase manufacturing cost and power consumption.

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 Figure 1~2. 1 is a schematic view of an electronic device according to a first embodiment of the present invention. 2 is an exploded view of the electronic device according to the first embodiment of the present invention. This embodiment provides an electronic device 1 , for example, an electronic product such as a notebook computer or a tablet computer, but is not limited thereto.

In this embodiment, the electronic device 1 includes a main body 10, a light guiding component 20a, and a fascia 30. Specifically, as shown in FIG. 1 , the main body 10 includes a screen main body 110 and a keyboard main body 130 which are assembled to each other, and the light guiding assembly 20 a is disposed on the keyboard main body 130 of the main body 10 .

Next, please refer to Figures 3~6. 3 is a schematic view showing a light guiding assembly according to a first embodiment of the present invention. 4 is a top view of a light guiding assembly according to a first embodiment of the present invention. FIG. 5 is a top view of the electronic device according to the first embodiment of the present invention. Figure 6 is a partial side cross-sectional view of Figure 5 of the present invention. It should be noted that, for the purpose of tidying the drawings, FIGS. 3 and 4 only show the light guiding assembly 20a. Moreover, FIG. 6 will simplify the structure of the body 10, such as omitting other internal components in the body 10, but is not intended to limit the invention.

In this embodiment, the light guiding component 20a includes a light guide plate 200 and a plurality of light sources 250.

The light guide plate 200 includes a plate portion 210 and an annular light exit portion 230. The annular light-emitting portion 230 is disposed on the plate portion 210 and surrounds the plate portion 210. In the embodiment, the plate portion 210 and the annular light-emitting portion 230 are integrally formed, but not limited thereto.

In detail, the board portion 210 has a first light guiding surface 211, a second light guiding surface 212, two first sides 213, two second sides 214, and a receiving slot S1. The first light guiding surface 211 and the second light guiding surface 212 are opposed to each other. The two first sides 213 are opposite each other and the second side 214 are opposite each other. The first side 213 and the second side 214 are connected between the first light guiding surface 211 and the second light guiding surface 212. The accommodating groove S1 is interposed between the first light guiding surface 211 and the second light guiding surface 212 and is surrounded by the first side 213 and the second side 214. It can be understood that the plate portion 210 has an inner wall surface 215 which forms one of the receiving grooves S1. The two first side 213 and the second second side 214 together surround the inner wall surface 215.

More specifically, in the present embodiment, the length of the first side 213 is smaller than the length of the second side 214. The overall light guide plate 200 is slightly rectangular in shape from the perspective of FIG. Moreover, in this embodiment, each first side 213 has a first extension line 213d, and each second side 214 has a second extension line 214d, and a first extension line 213d and a second line of each first side 213. The second extension lines 214d of the side 214 intersect to form four intersection points P, and these intersection points P form a two-line C passing through the accommodation groove S1 and intersecting each other. That is, the definition of the connection line C is a line segment connected to the two intersection points P and passing through the accommodation groove S1. Further, the second connection C and the two first sides 213 respectively surround the two first areas A1, and the two lines C and the second side 214 respectively surround the second area A2, that is, the first area A1 The definition is the area surrounded by the second line C and the two first sides 213, and the second area A2 is defined by the area surrounded by the second line and the second side 214.

In addition, in the embodiment, at least one of the first light guiding surface 211 and the second light guiding surface 212 is a smooth surface, a matte surface, a grain surface or a rough surface, and the user can select it according to requirements, and is not used. To limit the invention.

In addition, in the present embodiment, the accommodating groove S1 penetrates the first light guiding surface 211 and the second light guiding surface 212 respectively, but the invention is not limited thereto. For example, in other embodiments, the receiving groove S1 may be selected to extend through one of the first light guiding surface 211 or the second light guiding surface 212 or not to penetrate the first light guiding surface 211 and the second light guiding surface 212.

Next, in the present embodiment, the inner wall surface 215 has six light incident sections 215a. One of the wires C passes through two of the light-in segments 215a, and the other wire C passes through the other two light-in segments 215a. Specifically, in the perspective of FIG. 4, one of the wires C passes through the upper left corner and the lower right corner. The second light path 215a passes, and the other line C passes through the two light input segments 215a in the upper right corner and the lower left corner.

In addition, in the present embodiment, the light guide plate 200 has a center point 201, wherein a distance P between one intersection point P and one of the light incident segments 215a is a distance D1, and one of them The distance between the light incident segment 215a and the center point 201 on the connecting line C is the distance D2. As shown, the ratio of the distance D1 to the distance D2 may be 7:1, but not limited thereto, and has the visual needs of a general knowledge person. The ratio between the distance D1 and the distance D2 is adjusted to obtain different effects. Specifically, the ratio of the distance D1 to the distance D2 is different by the position of the light-incident section 215a in the plate portion 210, and the length of the first side 213 and the second side 214, as long as the design of the uniformity can be improved, usually the knowledge person Adjustments to visual requirements are still within the scope of the invention.

The annular light exit portion 230 is located on the plate portion 210 and surrounds the first light guiding surface 211. In detail, the annular light exit portion 230 has a light exit surface 231. The light exiting surface 231 surrounds the periphery of the first light guiding surface 211 and surrounds the inner side wall surface 215. In addition, as shown in the perspective of FIG. 6, the annular light exiting portion 230 protrudes from the plate portion 210. Specifically, the light exiting surface 231 of the annular light exiting portion 230 is located at a different horizontal plane from the first light guiding surface 211.

The light source 250 is located in the accommodating groove S1. In this embodiment, the number of the light sources 250 is six, and is adjacent to the six light-input segments 215a. More specifically, the four light sources 250 are respectively located in the two second regions A2 in a two-two manner, and the other two light sources 250 are respectively located in the two first regions A1. In the present embodiment, the light source 250 can be, but is not limited to, a Light Emitting Diode (LED) or a cold cathode tube, and is not intended to limit the present invention.

The fascia 30 covers the first light guiding surface 211 of the plate portion 210 and the accommodating groove S1 and the light source 250. In this embodiment, the material of the fascia 30 may be, but not limited to, polythylene terephthalate (PET), glass or PC transparent material, etc., by back printing opaque ink shading, or The effect of semi-light transmission is exhibited by coating, sand blasting, etc., but is not intended to limit the present invention.

Further, the plate portion 210 also has a reflecting surface 217. The reflecting surface 217 is interposed between the second light guiding surface 212 and the annular light emitting portion 230. The reflecting surface 217 corresponds to the light incident surface 215a and the light exit surface 231 of the annular light exiting portion 230, respectively. Specifically, the angle θ between the reflecting surface 217 of the plate portion 210 and the second light guiding surface 212 is between 132 degrees and 138 degrees. For example, in the embodiment, the angle θ between the reflective surface 217 of the plate portion 210 and the second light guiding surface 212 may be 135 degrees, so that the reflective surface 217 is orthographically projected on the plane of the light incident segment 215a. At least partially overlapping; and the orthographic projection of the reflecting surface 217 on the plane to which the light-emitting surface 231 of the annular light-emitting portion 230 belongs has at least partially overlapped. In the present embodiment, the aforementioned reflective surface 217 is a polished surface that is polished to help increase the subsequent reflection of light within the light guide plate 200.

Accordingly, the light emitted by the light source 250 can enter the plate portion 210 from the light incident portion 215a, and the light exiting portion 230 is guided by the first light guide surface 211, the second light guide surface 212, and the reflective surface 217. The light exit surface 231 is emitted. Moreover, the arrangement of the light incident portion 215a of the inner wall surface 215, for example, the arrangement of the light incident portion 215a and the geometry of the entire light guide plate 200 helps to increase the uniformity of light in the light guide plate 200, so as to increase the uniformity of light in the light guide plate 200. Achieve the desired design.

For example, please refer to FIGS. 7-8. FIG. 7 is a schematic diagram showing the light effect of the light guiding component of the first embodiment of the present invention in actual use, and FIG. 8 is a light trajectory diagram of FIG. 7 of the present invention. 7 to 8 show the actual measurement of the surface of the first light guiding surface of the light guide plate. It can be seen that the light guiding component 20a provided in this embodiment can achieve the desired uniform light effect.

Next, although the light-emitting surface 231 of the annular light-emitting portion 230 is located at a different horizontal plane from the first light-guiding surface 211 in the foregoing embodiment, it is not intended to limit the present invention. For example, please refer to FIGS. 9A-9B, and FIG. 9A is the present invention. A perspective view of the light guiding assembly of the second embodiment, and Fig. 9B is a partial side cross-sectional view of Fig. 9A of the present invention. As shown in the figure, in the light guiding component 20b of the present embodiment, the annular light-emitting portion 230 does not protrude from the plate portion 210, and the light-emitting surface 231 of the annular light-emitting portion 230 is located at the same position as the first light-guiding surface 211. The slats 30 have a light transmitting portion 31 above the light emitting surface 231 of the annular light exiting portion 230, and the light can be sequentially passed through the light emitting surface 231. The light transmitting portion 31 is transmitted through the light transmitting portion 31.

In the design of this embodiment, it is also helpful to achieve the desired optical effect. For example, please refer to FIGS. 10-11, which are schematic diagrams of the light guiding component of the second embodiment of the present invention in actual use, and Figure 11 is a light trajectory diagram of Figure 10 of the present invention. 10 to 11 show the actual measurement of the smooth surface of the first light guiding surface of the light guide plate. Since this embodiment is similar to the embodiment of Fig. 1, the following description will only be made for the difference.

Next, although the shape of the light guide plate 200 of the light guide assembly 20a in the foregoing embodiment is slightly rectangular, and the number of the light incident segments 215a of the light source 250 and the inner wall surface 215 is six, the present invention is not limited thereto, for example. Referring to FIG. 12, a schematic diagram of a light guiding assembly according to a third embodiment of the present invention is shown. The difference from the second embodiment of the present invention is that in the light guiding component 20c of the present embodiment, the length of the first side 213 is equal to the length of the second side 214, as shown in the perspective of FIG. The shape of the light plate 200 is slightly square. Moreover, the number of the light source 250 and the light incident segment 215a is four, wherein the two light sources 250 are located on one of the wires C, and the other two light sources 250 are located on the other wire C. It is understandable that one of the links Line C passes through two of the light segments 215a and the other wire C passes through the other two light segments 215a.

Again, the foregoing number of light sources 250 are optional and are not intended to limit the invention. For example, please refer to FIG. 13 , which is a schematic diagram of a light guiding assembly according to a fourth embodiment of the present invention. The difference between the third embodiment of the present invention is that the light guiding component 20c of the present embodiment has only a single light incident segment 215a and a single light source 250, and the light source 250 is located on one of the wires C.

In summary, in the electronic device and the light guiding assembly disclosed in the present invention, the light of the light source is guided by the above structure of the light guide plate of the present invention, thereby effectively reducing the number of light sources used, and taking into account the scattered electrons. The light uniformity of the device not only enhances the aesthetic effect of the design, but also solves the problems of traditionally requiring too many light-emitting elements to increase manufacturing cost and power consumption.

Although the embodiments of the present invention are disclosed above, it is not intended to limit the invention, and those skilled in the art, without departing from the spirit and scope of the present invention, The shapes, configurations, features, and quantities described in the scope of the application are subject to change. The scope of the invention is defined by the scope of the appended claims.

1‧‧‧Electronic device

10‧‧‧ Subject

20a, 20b, 20c, 20d‧‧‧ light guide components

30‧‧‧ plaque

31‧‧‧Transmission Department

110‧‧‧Screen main body

130‧‧‧Keyboard main body

200‧‧‧Light guide plate

201‧‧‧ center point

210‧‧‧ Board

211‧‧‧First light guide

212‧‧‧Second light guide

213‧‧‧ first side

214‧‧‧ second side

215‧‧‧ inner wall surface

215a‧‧‧Into the light segment

217‧‧‧reflecting surface

230‧‧‧Circular light exit

231‧‧‧Glossy

250‧‧‧Light source

A1‧‧‧ first area

A2‧‧‧Second area

C‧‧‧ connection

D1, D2‧‧‧ distance

P‧‧‧ intersection

S1‧‧‧ accommodating slot

Θ‧‧‧ angle

1 is a schematic view of an electronic device according to a first embodiment of the present invention. 2 is an exploded view of the electronic device according to the first embodiment of the present invention. 3 is a schematic view showing a light guiding assembly according to a first embodiment of the present invention. 4 is a top view of a light guiding assembly according to a first embodiment of the present invention. FIG. 5 is a top view of the electronic device according to the first embodiment of the present invention. Figure 6 is a partial side cross-sectional view of Figure 5 of the present invention. Fig. 7 is a schematic view showing the light effect of the light guiding member of the first embodiment of the present invention in actual use. Figure 8 is a light trace diagram of Figure 7 of the present invention. Figure 9A is a perspective view of a light guiding assembly of a second embodiment of the present invention. Figure 9B is a partial side cross-sectional view of Figure 9A of the present invention. Fig. 10 is a schematic view showing the light effect of the light guiding member of the second embodiment of the present invention in actual use. Figure 11 is a light trajectory diagram of Figure 10 of the present invention. Figure 12 is a schematic view showing a light guiding assembly according to a third embodiment of the present invention. FIG. 13 is a schematic view showing a light guiding assembly according to a fourth embodiment of the present invention.

20a‧‧‧Light guiding components

200‧‧‧Light guide plate

210‧‧‧ Board

211‧‧‧First light guide

212‧‧‧Second light guide

215‧‧‧ inner wall surface

230‧‧‧Circular light exit

231‧‧‧Glossy

250‧‧‧Light source

Claims (13)

A light guide assembly includes: a light guide plate, comprising: a plate portion having a first light guiding surface, a second light guiding surface and a receiving groove, the first light guiding surface and the second light guiding surface Opposite to each other, the accommodating groove is disposed between the first light guiding surface and the second light guiding surface, so that the plate portion has an inner wall surface forming one of the accommodating grooves, and the inner wall surface has at least one light entering And an annular light exiting portion connected to the plate portion and surrounding the first light guiding surface of the plate portion, the annular light emitting portion having a light emitting surface, the light emitting surface being located outside the inner side wall surface; At least one light source is disposed in the accommodating groove and adjacent to the at least one light incident segment, the at least one light source is configured to emit a light, and the light can enter the plate portion from the at least one light incident segment and pass through the light source The first light guiding surface and the second light guiding surface are guided from the light emitting surface of the annular light emitting portion. The light guide assembly of claim 1, wherein the light guide plate has two first sides opposite to each other and two second sides opposite to each other, and the two first sides are respectively connected between the two second sides to The accommodating groove surrounds the inner side, and a first extension line of each of the first sides intersects with a second extension line of each of the second sides to form a plurality of intersection points. The light guiding component of claim 2, wherein the length of each of the first sides is equal to the length of each of the second sides, and two wires intersecting each other are defined to be connected to the intersections and pass through the receiving slots. At least one light source is located on one of the wires. The light guiding component of claim 2, wherein the length of each of the first sides is equal to the length of each of the second sides, and the number of the at least one light source and the at least one light incident segment are four, and the definitions intersect each other. The second connection is connected to the intersections and passes through the accommodating slots, wherein the two light sources are located on one of the connecting lines, and the other two of the light sources are located on the other connecting line. The light guide assembly of claim 2, wherein the length of the first side is less than the length of the second side, and the number of the at least one light source and the at least one light incident segment on the second side of the first side is six. Four of the light sources are respectively located in the second area in two or two groups, and the other two light sources are respectively located in the two first areas, and two lines intersecting each other are defined to be connected to the intersections and pass through the accommodation. a slot, wherein the two first areas are areas surrounded by the two wires and the two first sides, and the two second areas are areas surrounded by the two wires and the second side. The light guiding component of claim 1, wherein the plate portion has a reflecting surface between the second light guiding surface and the annular light emitting portion, and corresponding to the light entering segment and the The light emitting surface is configured to emit the light from the light emitting surface of the annular light emitting portion via the guiding of the first light guiding surface, the reflecting surface and the second light guiding surface. The light guiding component of claim 6, wherein the reflecting surface of the plate portion and the second light guiding surface have an angle of between 132 degrees and 138 degrees. The light guiding component of claim 7, wherein the reflecting surface of the plate portion and the second light guiding surface have an angle of 135 degrees. The light guiding component 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 light guiding component of claim 1, wherein the light emitting surface is coplanar or non-coplanar with the first light guiding surface. A light guide plate includes: a plate portion having a first light guiding surface, a second light guiding surface and a receiving groove, wherein the first light guiding surface and the second light guiding surface are opposite to each other, the receiving groove Between the first light guiding surface and the second light guiding surface, so that the plate portion has an inner wall surface forming one of the receiving grooves, and the inner wall surface has at least one light incident portion; and a circular light output a portion of the first light guiding surface that is connected to the plate portion and surrounds the plate portion, the annular light emitting portion has a light emitting surface, the light emitting surface facing away from the second light guiding surface and located outside the inner wall surface . An electronic device comprising: a main body; a light guiding component disposed on the main body, the light guiding component comprising: a light guiding plate, comprising: a plate portion having a first light guiding surface and a second light guiding surface And a accommodating groove, the first light guiding surface and the second light guiding surface are opposite to each other, the accommodating groove is interposed between the first light guiding surface and the second light guiding surface, so that the plate portion has Forming an inner side wall surface of the accommodating groove, wherein the inner side wall surface has at least one light incident portion; and an annular light exit portion connected to the plate portion and surrounding the first light guiding surface of the plate portion, the ring The light-emitting portion has a light-emitting surface facing away from the second light-guiding surface and located on the outer side of the inner wall surface; and at least one light source is disposed in the accommodating groove and adjacent to the at least one light-incident portion. The at least one light source is configured to emit a light, and the light can enter the plate portion from the at least one light incident segment and the light exit portion is guided through the first light guide surface and the second light guide surface. The illuminating surface is emitted; and a fascia covering the first light guiding surface of the plate portion, the accommodating groove and the At least one light source. The electronic device of claim 12, wherein the plaque further has a light transmitting portion, the light transmitting portion being located above the annular light exit portion.