TWI406021B - Flexible light-guiding module with waterproof function - Google Patents

Abstract

A flexible light-guiding module with waterproof function includes a flexible light-guiding film, a light-reflecting element and a light-generating element. The light-reflecting element is disposed on a bottom side of the flexible light-guiding film. The light-generating element is embedded into the flexible light-guiding film. The light-generating element has a circuit substrate and at least one light-generating chip electrically disposed on the circuit substrate. Hence, the light-generating element is embedded into the flexible light-guiding film, so that the light-generating element is waterproof. In addition, the present invention can attach to any plane or curved surface by using the flexible light-guiding film, so that the application field of the present invention is very extensive. Moreover, the flexible light-guiding film and the light-reflecting element are integratedly formed in order to decrease manufacturing cost.

Description

Flexible beam guiding module with waterproof function

The invention relates to a beam guiding module, in particular to a flexible beam guiding module with waterproof function.

With the advancement and development of technology, portable electronic products such as mobile phones and personal digital assistants have become one of the necessary information products for modern people. In these electronic products, there is a button structure, and the button structure can provide use. To input data or perform various functions of the electronic product. In order to allow the user to clearly see the position and function of the button without the illumination of the light source, a backlight is generally disposed in the button structure of the electronic product, and the light source generated by the backlight can enable the user to have no light source. Under the illumination, the position of each button and the figures and numbers on the surface of the button can still be clearly seen.

The backlight inside the general button structure is a light guide plate. When the light-emitting elements inside the electronic product are illuminated, the light can be introduced from the front end of the light guide plate, and then the light guide plate projects light onto the bottom of each button, so that the button surface is made. The number or graphic can be displayed, so that the user can still perform the operation button without the light source being illuminated, without the wrong button. However, since light is gradually introduced from the front end of the light guide plate to the rear end, the brightness of the light is gradually attenuated, so that the brightness of the numbers and graphics displayed on the surface of the corresponding button on the rear end of the light guide plate is insufficient. Therefore, in order to make the light source on the light guide plate uniform, that is, a plurality of light-emitting elements or a light-reflecting plate are added on the periphery of the light guide plate, so that the light source on the light guide plate is uniform. As a result, the power consumption of electronic products will increase, and the cost will increase.

The technical problem to be solved by the present invention is to provide a flexible beam guiding module with waterproof function. The present invention achieves waterproof function by embedding a light beam generating element in a flexible beam guiding film.

In order to solve the above technical problem, according to one aspect of the present invention, a flexible beam guiding module having a waterproof function is provided, comprising: a flexible beam guiding film, a beam reflecting component and a beam generating component . Wherein, the beam reflecting component is disposed at the bottom of the flexible beam guiding film. The beam generating component is embedded in the flexible beam guiding film, wherein the beam generating component has a circuit substrate and at least one beam generating chip electrically connected to the circuit substrate.

In order to solve the above technical problem, according to one aspect of the present invention, a flexible beam guiding module having a waterproof function is provided, which is installed under a keyboard module as a backlight module of the keyboard module. The flexible beam guiding module comprises: a flexible beam guiding film, a beam reflecting component and a beam generating component. The flexible beam guiding film is disposed under the keyboard module. The beam reflecting element is disposed at the bottom of the flexible beam guiding film. The beam generating component is embedded in the flexible beam guiding film, wherein the beam generating component has a circuit substrate and at least one beam generating chip electrically connected to the circuit substrate.

Therefore, the beneficial effects of the present invention are:

1. The function of waterproofing is achieved by embedding the beam generating element in the flexible beam guiding film.

2. The use of the flexible beam guiding film allows the invention to be attached to any plane or curved surface.

3. The flexible beam guiding film and the beam reflecting element of the present invention can be integrally formed, thereby reducing the manufacturing cost.

4. The application fields of the invention are extensive, for example: mouse, keyboard backlight module, multimedia remote control, mobile phone, automobile (internal instrument panel lighting, external xenon lamp, direction indicator, etc.), night raincoat, reflective light vest clothing , courtyard solar street lights, trail lights, indoor lighting, signboards, etc.

In order to further understand the technology, the means and the effect of the present invention in order to achieve the intended purpose, refer to the following detailed description of the invention and the accompanying drawings. The detailed description is to be understood as illustrative and not restrictive.

Referring to the first embodiment, a first embodiment of the present invention provides a flexible beam guiding module with waterproof function, comprising: a flexible beam guiding film 1a, a beam reflecting component 2a and a The light beam generating element 3a.

Wherein, the flexible beam guiding film 1a can be a panel type flexible transparent plastic, such as polycarbonate (PC), acrylic resin or silica gel, and the like. The flexible beam guiding film 1a has a thickness of between 0.05 and 5 mm, preferably between 0.07 and 0.15 mm. However, the above definition of the material and thickness of the flexible light guiding film 1a is a preferred embodiment of the present invention and is not intended to limit the present invention.

Furthermore, the beam reflecting element 2a is disposed at the bottom of the flexible beam guiding film 1a, wherein in the example of the first embodiment (this example is not intended to limit the invention), the beam reflecting element 2a may be a retroreflective sheeting 20a disposed at the bottom of the flexible beam guiding film 1a.

In addition, the light beam generating element 3a is embedded in one end of the flexible light guiding film 1a, wherein the light generating element 3a has a circuit substrate 30a and a plurality of electrical connections to the circuit substrate 30a. The light beam generates a wafer 31a. In the example of the first embodiment (this example is not intended to limit the invention), the circuit substrate 30a may be a rigid circuit board or a flexible circuit board, and each of the light beam generating chips 31a may be a Light-emitting diode wafer.

Therefore, the light beams generated from the light beam generating element 3a generate a light beam (not shown) generated by the wafer 31a, which is permeable to "the guiding of the flexible light guiding film 1a" and "the light reflecting element 2a" The reflection of the retroreflective sheeting 20a produces an upward full-surface light-emitting effect (generating a surface light source).

Referring to FIG. 2A, a second embodiment of the present invention provides a flexible beam guiding module having a waterproof function, comprising: a flexible beam guiding film 1b, a beam reflecting component 2b, and A light beam generating element 3b. The greatest difference between the second embodiment of the present invention and the first embodiment is that in the second embodiment, the beam reflecting element 2b is a plurality of outwardly projecting retroreflective microstructures 20b. In addition, according to different design requirements, the reflective microstructures 20b can be disposed at the bottom of the flexible light guiding film 1b through "any forming method" (for example, printing, spraying, etc.), and the reflective The microstructure 20b can also be integrally formed directly on the bottom of the flexible beam guiding film 1b (that is, the flexible beam guiding film 1b and the reflective microstructure 20b are directly formed together in an integrated manner. For example: injection molding or compression molding, etc.).

Therefore, the light beams Lb generated by the wafer 31b are generated from the light beams of the light beam generating element 3b, which are transmitted through the "guide of the flexible light guiding film 1b" and "the reflection of the light reflecting element 2b" The reflection of the microstructure 20b" produces an upward full-surface lightcasting effect (generating a surface light source).

In addition, as shown in FIG. 2B, the flexible beam guiding module of the second embodiment of the present invention can be applied to a keyboard module K. For example, the flexible beam guiding module is installed on A backlight module of the keyboard module K is disposed under the keyboard module K, wherein the flexible beam guiding film 1b is disposed under the keyboard module K.

Referring to the third embodiment, a third embodiment of the present invention provides a flexible beam guiding module with waterproof function, comprising: a flexible beam guiding film 1c, a beam reflecting component 2c and a The light beam generating element 3c. The greatest difference between the third embodiment of the present invention and the other embodiments described above is that, in the third embodiment, the beam reflecting member 2c is a plurality of inwardly recessed reflective microstructures 20c, and the inward recesses are The reflective microstructure 20c is directly integrally formed on the bottom of the flexible beam guiding film 1c.

Of course, the "the outwardly projecting retroreflective microstructures 20b" disclosed in the second embodiment and the "inwardly recessed reflective microstructures 20c" disclosed in the third embodiment may also be different. The design is required to be formed in a mixed manner on the bottom of the flexible light guiding film 1c. Thus, the beam reflecting element can be a plurality of reflective microstructures that are selectively embossed outwardly and inwardly.

However, the above definition of the beam reflecting element (such as a retroreflective sheeting or a reflective microstructure) is for illustrative purposes only and is not intended to limit the invention. Any beam reflecting element that can cause a reflection effect is within the scope of protection of the present invention.

Therefore, the light beams Lc generated by the wafer 31c are generated from the light beams of the light beam generating element 3c, which are transmitted through the "guide of the flexible light guiding film 1c" and "the reflection of the light reflecting element 2c" The reflection of the microstructure 20c" produces an upward full-surface lightcasting effect (generating a surface light source).

Referring to the fourth embodiment, a fourth embodiment of the present invention provides a flexible beam guiding module with waterproof function, comprising: a flexible beam guiding film 1d, a beam reflecting component 2d and a The light beam generating element 3d. The greatest difference between the fourth embodiment of the present invention and the other embodiments described above is that in the fourth embodiment, the bottom portion 300d of the circuit substrate 30d of the light beam generating element 3d is exposed at the bottom of the flexible light guiding film 1d ( That is, the bottom portion 300d of the circuit substrate 30d is in contact with the outside. Therefore, the heat generated by the light beam generating chips 31d of the light beam generating element 3d can be guided to the outside through the transmission of the circuit substrate 30d (as indicated by the downward arrow in the fourth figure), which is advantageous for The heat dissipation effect of the light beam generating wafer 31d is enhanced.

Referring to FIG. 5, a fifth embodiment of the present invention provides a flexible beam guiding module with waterproof function, comprising: a flexible beam guiding film 1e, a beam reflecting component 2e and a The light beam generating element 3e. The fifth embodiment of the present invention differs greatly from the fourth embodiment in that, in the fifth embodiment, the flexible light guiding film 1e has at least two heat dissipation holes 10e formed under the light beam generating element 3e, A portion of the bottom portion 300e of the circuit board 30e of the light beam generating element 3e is transmitted through the heat dissipation hole 10e to communicate with the outside. Therefore, the heat generated by the light beam generating chips 31e of the light beam generating element 3e can be transmitted from the at least two heat dissipation holes 10e through the transmission of the circuit substrate 30e to be guided to the outside (as shown in the fifth figure) This mode is advantageous for enhancing the heat dissipation effect of the beam generating wafer 31e.

Referring to the sixth embodiment, a sixth embodiment of the present invention provides a flexible beam guiding module with waterproof function, comprising: a flexible beam guiding film 1f, a beam reflecting component 2f and a The light beam generating element 3f. The sixth embodiment of the present invention differs greatly from the fifth embodiment in that, in the sixth embodiment, the flexible light guiding film 1f has at least two heat dissipation holes 10f formed under the light beam generating element 3f and At least two heat dissipating bodies 11f (for example, heat conductive metal materials) respectively filled or disposed in the at least two heat dissipation holes 10f. In addition, the at least two heat dissipation holes 10f are openings formed by the flexible beam guiding film 1f and the two draft legs (not shown). In other words, when the above two draft legs are used to support the beam generating element 3f, the flexible beam guiding film 1f can be ejected by injection molding for coating the beam generating element 3f and each Part of the drafting foot. Therefore, when the two draft legs are separated from the flexible beam guiding film 1f, the at least two heat dissipation holes 10f can be formed.

Therefore, the heat generated by the beam generating chips 31f of the beam generating element 3f can be transmitted from the at least two heat sinks 11f through the transmission of the circuit board 30f to be guided to the outside (as shown in the sixth figure). This mode is advantageous for enhancing the heat dissipation effect of the light beam generating wafer 31f.

Referring to the seventh embodiment, a seventh embodiment of the present invention provides a flexible beam guiding module with waterproof function, comprising: a flexible beam guiding film 1g, a beam reflecting component 2g and a The light beam generating element 3g. The seventh embodiment of the present invention differs greatly from the fourth embodiment in that, in the seventh embodiment, the light beam generating element 3g has a heat dissipating member 32g disposed at the bottom end of the circuit substrate 30g. Therefore, the bottom portion 320g of the heat dissipating member 32g of the light beam generating element 3g is exposed at the bottom of the flexible light guiding film 1g (that is, the bottom portion 320g of the heat dissipating member 32g is in contact with the outside). Therefore, the heat generated by the light beam generating chips 31g of the light beam generating element 3g can be guided to the outside through the transmission of the circuit substrate 30g and the heat dissipating element 32g (as indicated by the downward arrow in the seventh figure) This method is advantageous for improving the heat dissipation effect of the light beam generating chips 31g.

Referring to the eighth embodiment, an eighth embodiment of the present invention provides a flexible beam guiding module with waterproof function, comprising: a flexible beam guiding film 1h, a beam reflecting component 2h and a The light beam generating element 3h. The eighth embodiment of the present invention differs from the seventh embodiment in that the flexible beam guiding film 1h has at least two heat dissipation holes 10h formed under the light beam generating element 3h. A portion of the bottom portion 320h of the heat dissipating member 32h of the light beam generating element 3h is transmitted through the heat dissipating hole 10h to communicate with the outside. Therefore, the heat generated by the light beam generating chips 31h of the light beam generating element 3h can be transmitted from the at least two heat dissipation holes 10h through the circuit substrate 30h and the heat radiating element 32h to be guided to the outside (eg, This is a good way to improve the heat dissipation effect of the beam generating wafer 31h.

Referring to the ninth embodiment, a ninth embodiment of the present invention provides a flexible beam guiding module with waterproof function, comprising: a flexible beam guiding film 1j, a beam reflecting component 2j and a The light beam generating element 3j. The ninth embodiment of the present invention has the greatest difference from the eighth embodiment in that, in the ninth embodiment, the flexible beam guiding film 1j has at least two heat dissipation holes 10j formed under the light beam generating element 3j and At least two heat sinks 11j respectively filled in the at least two heat dissipation holes 10j. Therefore, the heat generated by the light beam generating chips 31j of the light beam generating element 3j can be transmitted from the at least two heat sinks 11j through the circuit board 30j and the heat radiating element 32j to be guided to the outside (eg, This is advantageous for enhancing the heat dissipation effect of the light beam generating wafer 31j in the downward arrow in the nine figure.

Referring to the tenth embodiment, a tenth embodiment of the present invention provides a flexible beam guiding module with waterproof function, comprising: a flexible beam guiding film 1k, a beam reflecting component 2k and a The light beam generating element 3k. The greatest difference between the tenth embodiment of the present invention and the other embodiments described above is that in the tenth embodiment, since the overall thickness of the light beam generating element 3k is larger than the thickness of the flexible light guiding film 1k, the flexible The beam guiding film 1k is roughly divided into a first section A for accommodating the beam generating element 3k and a second section B connected to the first section A, and the thickness of the first section A It is greater than the thickness of the second section B. Therefore, even if the flexible light guiding film 1k has to be made particularly thin due to special needs, the light generating element 3k can be wrapped in the flexible light guiding film 1k.

Referring to FIG. 11 , an eleventh embodiment of the present invention provides a flexible beam guiding module with waterproof function, comprising: a flexible beam guiding film 1 m and a beam reflecting component 2 m. And a light beam generating element 3m. The eleventh embodiment of the present invention is the most different from the first embodiment in that, in the eleventh embodiment, the light beam generating element 3m has only one light beam generating wafer 31m, and the flexible light guiding film 1m is presented. Strip type. Therefore, the present invention can not only generate a surface light source through the flexible beam guiding film 1a of the first embodiment (as shown in FIG. B), but also the flexible beam guiding of the eleventh embodiment. The film 1m produces a surface light source (as shown in Figure 11).

In summary, the present invention achieves waterproof function by embedding the beam generating element in the flexible beam guiding film. Furthermore, the use of the flexible beam guiding film allows the present invention to be attached to any plane or curved surface, and thus the field of application of the present invention is very broad. In addition, the flexible beam guiding film of the present invention and the beam reflecting element can be integrally formed, thereby reducing the manufacturing cost.

All the scope of the present invention is intended to be included in the scope of the present invention, and all those skilled in the art should be included in the scope of the present invention. Variations or modifications that can be readily conceived within the scope of the invention are encompassed by the scope of the patents herein below.

[First Embodiment]

1a. . . Flexible beam guiding film

2a. . . Beam reflecting element

20a. . . Reflective sheet

3a. . . Beam generating element

30a. . . Circuit substrate

31a. . . Beam generating wafer

[Second embodiment]

1b. . . Flexible beam guiding film

2b. . . Beam reflecting element

20b. . . Reflective microstructure

3b. . . Beam generating element

Lb. . . beam

K. . . Keyboard module

[Third embodiment]

1c. . . Flexible beam guiding film

2c. . . Beam reflecting element

20c. . . Reflective microstructure

3c. . . Beam generating element

Lc. . . beam

[Fourth embodiment]

1d. . . Flexible beam guiding film

2d. . . Beam reflecting element

3d. . . Beam generating element

30d. . . Circuit substrate

300d. . . bottom

31d. . . Beam generating wafer

Ld. . . beam

[Fifth Embodiment]

1e. . . Flexible beam guiding film

10e. . . Vents

2e. . . Beam reflecting element

3e. . . Beam generating element

30e. . . Circuit substrate

300e. . . bottom

31e. . . Beam generating wafer

Le. . . beam

[Sixth embodiment]

1f. . . Flexible beam guiding film

10f. . . Vents

11f. . . Heat sink

2f. . . Beam reflecting element

3f. . . Beam generating element

30f. . . Circuit substrate

31f. . . Beam generating wafer

Lf. . . beam

[Seventh embodiment]

1g. . . Flexible beam guiding film

2g. . . Beam reflecting element

3g. . . Beam generating element

30g. . . Circuit substrate

31g. . . Beam generating wafer

32g. . . Heat sink

320g. . . bottom

Lg. . . beam

[Eighth Embodiment]

1h. . . Flexible beam guiding film

10h. . . Vents

2h. . . Beam reflecting element

3h. . . Beam generating element

30h. . . Circuit substrate

31h. . . Beam generating wafer

32h. . . Heat sink

320h. . . bottom

Lh. . . beam

Ninth Embodiment

1j. . . Flexible beam guiding film

10j. . . Vents

11j. . . Heat sink

2j. . . Beam reflecting element

3j. . . Beam generating element

30j. . . Circuit substrate

31j. . . Beam generating wafer

32j. . . Heat sink

Lj‧‧‧ Beam

[Tenth embodiment]

1k‧‧‧Flexible beam guiding film

2k‧‧‧beam reflector

3k‧‧‧beam generating components

A‧‧‧ first section

B‧‧‧Second section

[Eleventh Embodiment]

1m‧‧‧Flexible beam guiding film

2m‧‧‧beam reflection element

3m‧‧‧beam generating components

31m‧‧‧beam generating wafer

The first figure is a perspective view of a first embodiment of a flexible beam guiding module with waterproof function according to the present invention;

2A is a side view showing a second embodiment of the flexible beam guiding module with waterproof function of the present invention;

The second B is a side view of the flexible beam guiding module with waterproof function applied to the keyboard module in the second embodiment of the present invention;

The third figure is a side view of a third embodiment of the flexible beam guiding module with waterproof function of the present invention;

The fourth figure is a side view of a fourth embodiment of the flexible beam guiding module with waterproof function of the present invention;

The fifth figure is a side view of a fifth embodiment of the flexible beam guiding module with waterproof function of the present invention;

6 is a side view showing a sixth embodiment of the flexible beam guiding module with waterproof function of the present invention;

7 is a side view showing a seventh embodiment of the flexible beam guiding module with waterproof function of the present invention;

The eighth figure is a side view of the eighth embodiment of the flexible beam guiding module with waterproof function of the present invention;

Figure 9 is a side view showing a ninth embodiment of the flexible beam guiding module with waterproof function of the present invention;

Figure 10 is a side view showing a tenth embodiment of the flexible beam guiding module with waterproof function of the present invention;

11 is a side view showing the eleventh embodiment of the flexible beam guiding module with waterproof function of the present invention;

1a. . . Flexible beam guiding film

2a. . . Beam reflecting element

20a. . . Reflective sheet

3a. . . Beam generating element

30a. . . Circuit substrate

31a. . . Beam generating wafer

Claims (21)

A flexible beam guiding module with waterproof function, comprising: a flexible beam guiding film; a beam reflecting component disposed at the bottom of the flexible beam guiding film; and a beam generating component And embedded in the flexible beam guiding film, wherein the beam generating component has a circuit substrate and at least one beam generating chip electrically connected to the circuit substrate. The flexible beam guiding module with waterproof function according to claim 1, wherein the flexible beam guiding film is polycarbonate (PC), acrylic resin. Or silica gel. The flexible beam guiding module with waterproof function according to claim 1, wherein the flexible beam guiding film has a thickness of between 0.05 and 5 mm. The flexible beam guiding module with waterproof function according to claim 1, wherein the flexible beam guiding film is divided into a first section and a connection for accommodating the beam generating component. And a second section of the first section, and the thickness of the first section is greater than the thickness of the second section. The flexible beam guiding module with waterproof function according to claim 1, wherein the beam reflecting component is a plurality of outwardly protruding reflective microstructures. The flexible beam guiding module with waterproof function according to claim 5, wherein the reflective microstructures are integrally formed in the flexible beam guiding by injection molding or compression molding. The bottom of the film. The flexible beam guiding module with waterproof function according to claim 1, wherein the beam reflecting component is a plurality of inwardly concave reflective microstructures. The flexible beam guiding module with waterproof function according to claim 1, wherein the circuit substrate is a rigid circuit board or a flexible circuit board, and the at least one light beam generating chip is a light emitting Diode wafer. The flexible beam guiding module with waterproof function according to claim 1, wherein the bottom of the circuit substrate is exposed at the bottom of the flexible beam guiding film. The flexible beam guiding module with waterproof function according to claim 1, wherein the flexible beam guiding film has at least one heat dissipation hole formed under the beam generating element, so that the A portion of the bottom of the circuit board communicates with the outside through the heat dissipation hole, wherein the at least one heat dissipation hole is an opening formed by the flexible beam guiding film and a drafting foot. The flexible beam guiding module with waterproof function according to claim 1, wherein the flexible beam guiding film has at least one heat dissipation hole formed under the light beam generating element and at least one filling Or a heat dissipating body disposed in the at least one heat dissipation hole, wherein the at least one heat dissipation hole is an opening formed by the flexible beam guiding film and a drafting foot. The flexible beam guiding module with waterproof function according to claim 1, wherein the beam generating component has a heat dissipating component disposed at a bottom end of the circuit substrate. The flexible beam guiding module with waterproof function according to claim 12, wherein the bottom of the heat dissipating component is exposed at the bottom of the flexible beam guiding film. The flexible beam guiding module with waterproof function according to claim 12, wherein the flexible beam guiding film has at least one heat dissipation hole formed under the beam generating element, so that the A portion of the bottom of the heat dissipating component communicates with the outside through the heat dissipating hole, wherein the at least one heat dissipating hole is an opening formed by the flexible beam guiding film and a drafting foot. The flexible beam guiding module with waterproof function according to claim 12, wherein the flexible beam guiding film has at least one heat dissipation hole formed under the light beam generating element and at least one filling Or a heat dissipating body disposed in the at least one heat dissipation hole, wherein the at least one heat dissipation hole is an opening formed by the flexible beam guiding film and a drafting foot. The utility model relates to a flexible beam guiding module with a waterproof function, which is installed under a keyboard module as a backlight module of the keyboard module, wherein the flexible beam guiding module comprises: a flexible beam guiding film disposed under the keyboard module; a beam reflecting component disposed at a bottom of the flexible beam guiding film; and a beam generating component embedded in the flexible In the beam guiding film, the beam generating component has a circuit substrate and at least one beam generating chip electrically connected to the circuit substrate. As described in claim 16, the waterproof function is a flexible beam guiding module, wherein the flexible beam guiding film is divided into a first section for accommodating the beam generating component and a second section connected to the first section, and the The thickness of a section is greater than the thickness of the second section. The flexible beam guiding module with waterproof function according to claim 16, wherein the bottom of the circuit substrate is exposed at the bottom of the flexible beam guiding film. The flexible beam guiding module with waterproof function according to claim 16, wherein the flexible beam guiding film has at least one heat dissipation hole formed under the light beam generating component, so that the A portion of the bottom of the circuit board communicates with the outside through the heat dissipation hole, wherein the at least one heat dissipation hole is an opening formed by the flexible beam guiding film and a drafting foot. The flexible beam guiding module with waterproof function according to claim 16, wherein the flexible beam guiding film has at least one heat dissipation hole formed under the light beam generating element and at least one filling Or a heat dissipating body disposed in the at least one heat dissipation hole, wherein the at least one heat dissipation hole is an opening formed by the flexible beam guiding film and a drafting foot. The flexible beam guiding module with waterproof function according to claim 16, wherein the beam generating component has a heat dissipating component disposed at a bottom end of the circuit substrate.