TWI497121B - An optical modulation structure and a light source device including the optical modulation structure - Google Patents

Description

Light modulation structure and light source device including the same

The present invention relates to a light modulating structure and a light source device including the light modulating structure, and more particularly to a modulating unit in which a plurality of non-spherical spherical particles are disposed inside a substrate, which is less prone to warpage, thereby improving yield, and is not easy to be used. A novel design for film scratching.

At present, the diffusion film and diffusion plate on the market, for example, a diffusion film for a backlight module generally used for providing a uniform surface light source for a liquid crystal display, the conventional diffusion film is mainly for adding chemical particles to the diffusion film substrate, Scattering particles, and the microparticles of the existing diffusing plate are dispersed between the resin layers; when the light passes through the diffusing film or the diffusing plate, it will continuously pass through the medium of different refractive index, and the phenomenon of refraction, reflection and scattering occurs, so that The effect of optical diffusion is achieved.

Reference may be made to Japanese Patent No. 200807033 and JP 7174909, which are directed to a diffusion sheet which is formed by applying a light-transmitting resin containing resin particles to a matrix film or a light-transmissive resin film having an internal diffusion function; For example, the invention patent No. I290232, which indicates a scratch-resistant diffusion film, which has a hardened coating to prevent warpage, and avoids the case where the diffusion film is used to scratch the light-concentrating film when used in a backlight module. Occurrence; and JP 08-146207 "optical diffusion film", which discloses an optical diffusion film whose surface is structured.

However, the aforementioned conventional diffusion film and diffusion plate have the following defects:

1. Since the top surface of the existing substrate is not commensurate with the structure of the bottom surface, it is easy to cause warpage, which leads to a situation of low yield: whether the surface of the diffusion film is structured or attached to the substrate film. The light-transmitting resin of the resin particles makes the structure of the top surface and the bottom surface of the substrate disproportionate, and warpage is likely to occur.

2. It is easy to cause scratches: whether the surface of the diffusion film is structured, or the matrix film is coated with a light-transmitting resin containing resin particles, the surface structure of the diffusion film or the resin particles are easily placed corresponding thereto. Other film scratches are common in scratching the brightness enhancing film in the backlight module.

3. Expensive: In order to avoid warping or scratching, the common method is to form a hardened coating on the substrate. Although this method can avoid warping or scratching, it also increases the manufacturing cost burden.

Nowadays, the inventors have corrected and improved the above-mentioned lack of the actual use of the diffusion film and the diffusion plate, and at the same time, in the spirit and philosophy of seeking for good, and with the assistance of professional knowledge, experience, and ingenuity, After the test, the present invention was created.

The invention is a light modulating structure comprising a substrate, wherein a plurality of non-spherical spherical particles are arranged inside the substrate, and the refractive index inside each of the modulating units is smaller than the refractive index of the substrate.

Each modulation unit is internally air or vacuum.

The modulating units are arranged vertically inside the substrate or attached to the substrate The inside is arranged in the same plane (not arranged above and below).

The size of the modulation units may be the same or different.

The arrangement of the modulation units may be matrix, radial, spaced, hexagonal, randomly arranged, or any arrangement.

Also, the surface of the substrate may have a plurality of brightening units.

The invention lays out the number modulation unit inside the substrate instead of structuring the surface of the substrate, or coating the substrate with the light-transmitting resin containing the resin particles, that is, the structure of the top surface and the bottom surface of the substrate is commensurate with each other, and is not easy to produce. In the case of warping; also because the surface of the substrate does not have a structure or resin particles, it is difficult to scratch other film layers corresponding thereto.

In order to make the technical content, the purpose of the invention and the effects thereof achieved by the present invention more fully and clearly disclosed, the following is a detailed description, and please refer to the illustrated drawings and drawings: First, please refer to As shown in the first and second figures, it is a first preferred embodiment of the light modulating structure (1) of the present invention, which is provided with a plurality of modulating units (111) disposed inside the substrate (11), and the substrate (11) can be The single unit material or composed of different materials, the modulating unit (111) is non-spherical spherical particles, and the longitudinal section of the modulating unit (111) is tapered from one surface of the substrate (11) toward the other surface. The circular arc shape [since this is a side cross-sectional view, the modulation unit (111) may actually be an elliptical sphere or the like (ie, non-spherical) or a transverse solid cylinder], the modulation unit ( 111) In this embodiment, the bottom surface of the substrate (11) is tapered toward the top surface, but in other aspects, the top surface of the substrate (11) may also be faced. The direction of the bottom surface tapers.

The interior of the modulating unit (111) is air or vacuum, that is, the refractive index (A) inside the modulating unit (111) is smaller than the refractive index (B) of the substrate (11), and the complex modulating unit (111), (111) The patterns arranged corresponding to each other are in a matrix form.

Please refer to the third figure. When using the present invention, the light travels from bottom to top, first passes through the outer bottom of the substrate (11) of the light modulating structure (1), and then passes through the inside of the substrate (11). a plurality of modulation units (111) are disposed. At this time, since the interior of each modulation unit (111) is air or vacuum, that is, the refractive index (A) inside the modulation unit (111) is smaller than the refractive index of the substrate (11) ( B), therefore, the modulating units (111) have the function of diverging light, so that the light passing through the modulating units (111) is uniformly diverged, thereby achieving a light modulating effect of uniform atomization of the light.

Furthermore, the reason why the present invention utilizes non-spherical spherical particles is to reduce the scattering phenomenon which is caused by the use of the spherical spherical particles, and to have a more effective divergent light function.

Referring to the fourth to seventh embodiments, the plurality of modulation units (111) and (111) of the foregoing embodiment may be arranged in a radial shape, a spaced arrangement, a hexagonal arrangement, a random arrangement, or an arbitrary arrangement. Arrangement of the situation.

Referring to FIG. 8 , which is a second preferred embodiment of the light modulating structure ( 2 ) of the present invention, the modulating unit ( 211 ) of the plurality of non-spherical particles is disposed inside the substrate ( 21 ). The substrate (21) may be composed of the same material or different materials, and the longitudinal section of the modulating unit (211) is tapered from the surface of the substrate (21) toward the other surface to form a convex arc shape [ Since this is a side cross-sectional view, the modulation unit (211) may actually be an elliptical sphere or the like (ie, a non-spherical ball) In the present embodiment, the modulating unit (211) is tapered from the bottom surface of the substrate (21) toward the top surface, but in other aspects, it may also be a substrate (21). The top surface of the base is tapered toward the bottom.

And the inside of the modulating unit (211) is air or vacuum, that is, the refractive index (A) inside the modulating unit (211) is smaller than the refractive index (B) of the substrate (21), and is compared with the first preferred embodiment. The difference is that the size of the complex modulation unit (211) is different, and the arrangement of the plurality of modulation units (211) and (211) may be matrix, radial, spaced, hexagonal. , randomly arranged, or any arrangement.

Referring to FIG. 9 again, it is a third preferred embodiment of the light modulating structure (3) of the present invention, which differs from the first and second preferred embodiments in that it is attached to a substrate (31). a plurality of modulation units (311) arranged vertically and vertically, the substrate (31) may be composed of the same material or different materials, the modulation unit (311) is not a spherical particle, and the modulation unit (311) The longitudinal section is a circular arc shape which is tapered from one surface of the substrate (31) toward the other surface. [This is a side cross-sectional view, so the modulation unit (311) may actually be an elliptical sphere or the like. (ie, non-spherical), or a transverse solid cylinder], the modulating unit (311) is tapered from the bottom surface of the substrate (31) toward the top surface in this embodiment, but in other aspects, It can be tapered from the top surface of the substrate (31) toward the bottom surface.

And the inside of the modulating unit (311) is air or vacuum, that is, the refractive index (A) inside the modulating unit (311) is smaller than the refractive index (B) of the substrate (31), and the size of the number modulating unit (311) Can be the same or different (please refer to the tenth figure together), and the arrangement of the plurality of modulation units (311) and (311) can be They are arranged in a matrix, a radial shape, a space arrangement, a hexagonal arrangement, a random arrangement, or an arbitrary arrangement.

Referring to FIG. 11 , which is a fourth preferred embodiment of the light modulating structure ( 4 ) of the present invention, the plurality of modulating units arranged in the same plane (not arranged above and below) are arranged inside the substrate ( 41 ). (411), of course, the modulating unit (411) of the present embodiment may also be arranged in a manner of being arranged up and down inside the substrate (41), and the substrate (41) may be composed of the same material or different materials, and The modulating unit (411) is not a spherical particle, but is different from the foregoing embodiments in that the longitudinal section of the modulating unit (411) is tapered from one surface of the substrate (41) toward the other surface. The shape of the ladder (here, a side cross-sectional view, the modulation unit (411) may actually be a stereoscopic trapezoidal body, a lateral stereoscopic trapezoidal column, etc.), and the modulation unit (411) is a substrate in this embodiment. The bottom surface of (41) is tapered toward the top surface, but in other aspects, the top surface of the substrate (41) may be tapered toward the bottom surface.

The inside of the modulating unit (411) is air or vacuum, that is, the refractive index (A) of the modulating unit (411) is smaller than the refractive index (B) of the substrate (41), and the size of the complex modulating unit (411) can be In the same or different manners, the arrangement of the plurality of modulation units (411) and (411) may be matrix, radial, spaced, hexagonal, random, or arbitrary.

Referring to FIG. 12, which is a fifth preferred embodiment of the light modulating structure (5) of the present invention, it is possible to arrange only a plurality of modulations arranged in the same plane (not arranged above and below) in the substrate (51). The unit (511), of course, the modulation unit (511) of the present embodiment may also be arranged vertically inside the substrate (51), and the substrate (51) may be made of the same material or different materials, and Modulation unit (511) is not a spherical particle, but differs from the foregoing embodiments in that the longitudinal section of the modulating unit (511) is tapered from one surface of the substrate (51) toward the other surface to form a convex cone. The modulation unit (511) may be a stereoscopic cone, a three-dimensional triangular pyramid, and a lateral solid triangular prism. The modulation unit (511) is a substrate (51) in this embodiment. The bottom surface of the substrate is tapered toward the top surface, but in other aspects, the top surface of the substrate (51) may be tapered toward the bottom surface.

The interior of the modulating unit (511) is air or vacuum, that is, the refractive index (A) of the modulating unit (511) is smaller than the refractive index (B) of the substrate (51), and the size of the modulating unit (511) can be The same or different, the array modulation elements (511) and (511) may be arranged in a matrix, a radial shape, a spaced arrangement, a hexagonal arrangement, a random arrangement, or an arbitrary arrangement.

Please refer to the thirteenth to fifteenth drawings, which is a sixth preferred embodiment of the light modulating structure (6) of the present invention, which can be arranged in the same plane in the substrate (61) (not arranged above and below). The plurality of modulation units (611), of course, the modulation unit (611) of the present embodiment may also be arranged inside and below the substrate (61). The substrate (61) may be of the same material or different materials. The modulation unit (611) is not a spherical particle, and the longitudinal section of the modulation unit (611) is tapered from a surface of the substrate (61) toward the other surface to form a convex arc shape. The modulating unit (611) may be tapered from the bottom surface of the substrate (61) toward the top surface in this embodiment, but in other aspects, the substrate may also be used. 61) The top surface tapers toward the bottom surface.

And the interior of the modulating unit (611) is hollow or vacuum, that is, the refractive index (A) inside the modulating unit (611) is smaller than the refractive index (B) of the substrate (61), and the complex number is adjusted. The size of the unit (611) may be the same or different, and the arrangement of the plurality of modulation units (611) and (611) may be matrix, radial, spaced, hexagonal, and randomly arranged. a shape, or an arbitrary arrangement; and the difference from the foregoing five embodiments is that the upper surface of the substrate (61) has a plurality of brightening units (612), and the brightening units (612) have a concentration, Adjusting the direction of the light to the positive direction, so that the human eye feels brighter. The longitudinal section of the brightness enhancing unit (612) may be circular, conical, or wavy, or may be a transverse solid cylinder, a solid cone, or a solid triangle. Cone, three-dimensional wave body, transverse three-dimensional triangular column, horizontal three-dimensional wavy triangular column.

When used, the light travels from bottom to top, first through the outer bottom of the substrate (61) of the light modulating structure (6), and then through the number of modulation units (611) disposed inside the substrate (61). Since the inside of the modulating unit (611) is air or vacuum, that is, the refractive index (A) inside the modulating unit (611) is smaller than the refractive index (B) of the substrate (11), the modulating unit (611) has The diverging function is such that the light passing through the number modulation unit (611) is uniformly diverged, and then the uniformly divergent light passes through the plurality of brightening units (612) on the upper surface of the substrate (61), and is illuminated by the brightening unit (612). ) Concentrate and adjust to the positive direction to achieve uniform light atomization and bright light modulation.

The first to sixth preferred embodiments may be combined with various light sources to form a light source device, which may be a cold cathode lamp (CCFL), a light emitting diode (LED), or an organic light emitting diode (OLED). Various light sources such as a intensity discharge gas lamp (HID), and the first to sixth preferred embodiments can be used singly or in combination with each other.

However, the foregoing embodiments or drawings do not limit the structure of the present invention. Appropriate changes or modifications of the present invention, which are within the ordinary skill of the art, are considered to be within the scope of the invention.

Through the above implementation description, it can be seen that the light modulation structure of the present invention has at least the following advantages:

1. Since the top surface of the substrate is commensurate with the structure of the bottom surface, warpage is less likely to occur, and the yield is improved. The present invention is to arrange a number of modulation units inside the substrate instead of structuring the surface of the substrate, or on the substrate. The light-transmissive resin coated with the resin particles, that is, the structure of the top surface and the bottom surface of the substrate is commensurate with warpage, and the yield is improved.

2. Scratch is not easy to occur: In the present invention, a number of modulation units are disposed inside the substrate, and the surface of the substrate does not have a structure or resin particles, so that it is difficult to scratch other film layers corresponding thereto.

3. The cost is cheap: the top surface of the substrate is commensurate with the structure of the bottom surface, and it is not necessary to form a hard coating on the substrate in order to avoid warping or scratching, that is, the manufacturing cost burden is reduced.

In summary, the embodiments of the present invention can achieve the expected use efficiency, and the specific structure disclosed therein has not been seen in the same kind of products, nor has it been disclosed before the application, and has fully complied with the requirements and requirements of the patent law.爰Proposing an application for a new type of patent in accordance with the law, and pleading for a review and granting a patent, it is really sensible.

(1)(2)(3)(4)(5)(6)‧‧‧Light modulation structure

(11)(21)(31)(41)(51)(61)‧‧‧Substrate

(111)(211)(311)(411)(511)(611)‧‧‧ Modulation unit

(612) ‧‧‧ Brightening unit

(A) ‧ ‧ refractive index inside the modulation unit

(B) ‧‧‧Refractive index of the substrate

The first figure is a partial cross-sectional perspective view of a first preferred embodiment of the present invention.

The second drawing is a side cross-sectional view of a first preferred embodiment of the present invention.

The third figure is a schematic diagram of the function of the divergent light of the present invention.

Figure 4 is a perspective view showing the arrangement of the first preferred embodiment of the present invention.

Figure 5 is a perspective view showing the arrangement of the first preferred embodiment of the present invention.

Figure 6 is a perspective view showing the arrangement of the first preferred embodiment of the present invention.

Figure 7 is a perspective view showing the arrangement of the first preferred embodiment of the present invention.

Figure 8 is a side cross-sectional view showing a second preferred embodiment of the present invention

Figure 9 is a side cross-sectional view showing a third preferred embodiment of the present invention

Figure 10 is a side cross-sectional view showing a third preferred embodiment of the present invention

Figure 11 is a side cross-sectional view showing a fourth preferred embodiment of the present invention

Figure 12 is a side cross-sectional view showing a fifth preferred embodiment of the present invention

Figure 13 is a side cross-sectional view showing a sixth preferred embodiment of the present invention

Figure 14 is a side cross-sectional view showing a sixth preferred embodiment of the present invention

Figure 15 is a side cross-sectional view showing a sixth preferred embodiment of the present invention

(1) ‧‧‧Light modulation structure

(11) ‧‧‧Substrate

(111)‧‧‧ Modulation unit

Claims (19)

A light modulation structure is disposed in a modulation unit of a plurality of non-spherical spherical particles disposed inside a substrate, wherein a refractive index inside each modulation unit is smaller than a refractive index of the substrate, and a longitudinal section thereof is from a surface of the near substrate to the other surface The shape of the surface is tapered, and the modulating units are arranged in the same plane inside the substrate. The light modulation structure according to claim 1, wherein the longitudinal section of each of the modulation units is tapered from a surface of the substrate toward the other surface to form a convex arc shape. The light modulation structure according to claim 1, wherein the longitudinal section of each of the modulation units is tapered from the bottom surface of the substrate toward the top surface to form a convex trapezoidal shape. The light modulation structure according to claim 1, wherein the longitudinal section of each of the modulation units is tapered from the bottom surface of the substrate toward the top surface to be convexly tapered. The light modulating structure according to any one of claims 1 to 4, wherein each of the modulating units is air or vacuum. The light modulation structure according to any one of claims 1 to 4, wherein the size of the modulation units is the same. The light modulating structure according to any one of claims 1 to 4, wherein the modulating units are different in size from each other. The light modulating structure according to any one of claims 1 to 4, wherein the modulating units are arranged vertically inside the substrate. The light modulating structure according to any one of claims 1 to 4, wherein the substrate is made of the same material. A light modulation structure is disposed in a plurality of modulation units disposed inside a substrate, wherein a refractive index inside each modulation unit is smaller than a refractive index of the substrate, and a longitudinal profile thereof is a shape that is tapered from a surface of the substrate toward the surface of the other surface. And the modulating units are arranged in the same plane inside the substrate, and the surface of the substrate has a plurality of brightening units. The light modulation structure according to claim 10, wherein the longitudinal section of each of the modulation units has a circular arc shape convex toward the inside of the substrate. The light modulation structure according to claim 10, wherein the longitudinal section of each of the modulation units is tapered from the bottom surface of the substrate toward the top surface to form a convex trapezoidal shape. The light modulation structure according to claim 10, wherein the longitudinal section of each of the modulation units is tapered from the bottom surface of the substrate toward the top surface to be convexly tapered. The light modulating structure according to any one of claims 10 to 13, wherein each of the modulating units is air or vacuum. The light modulation structure according to any one of claims 10 to 13, wherein the size of the modulation units is the same. The light modulating structure according to any one of claims 10 to 13, wherein the modulating units are different in size from each other. The light modulating structure according to any one of claims 10 to 13, wherein the substrate is made of the same material. A light source device comprising a light source and being disposed on the light A light modulating structure according to any one of the preceding items 1 to 17, wherein the light modulating structure is combined with a light source; wherein the light modulating structure is used singly or in combination with each other . The light source device of claim 18, wherein the light source is a intensity discharge gas lamp (HID).