TWM275427U - Composite structure of a light guide for light diffision - Google Patents

Description

M275427

[Technical field to which the new type belongs] This new type relates to a light-guided structure, a light-guided structure, and a light-diffusing structure for a light-diffusing micro-lens system. Especially with the [previous technology] in today's life, it is often combined with Zhan Tian 丨 & ... i hanging 9 to use some image display technology, especially:,: f is used in some low-power portable The display device of electronic equipment is on the peak. LCD is one of the main technologies used in these display devices, which requires an external light source to present the image. However, in these portable electronic devices, the f-battery is usually used as the sole source of power. In consideration of power saving, how to improve the light utilization efficiency becomes very important. Therefore, there are many technologies for improving the efficiency of light irradiation applied to liquid crystal display devices. The above-mentioned technologies are not only applied to portable electronic devices, but also widely used in image projection. They are mainly divided into DMD (Digital Mirror Device) projection and LCD projection. The projected image is finally presented to the audience through some media. The quality of the image seen by the audience has a great relationship with the media. Screen is usually used as the projected medium ’According to the audience ’s% 彡 brother and the projection theory used, this screen may be used for front projection or rear projection °

Page 5 M275427 Creative Instructions (2) General LCD (edge ray panel and round polar ray total reflection light will be diffused. Diffuse ray panel can increase the light scattering effect 1 i ght), cold cathode ray or angled tube Projecting the light towards a thin one with many corner patterns will be sufficient by the guide. In addition, even if the diffuser line of the monitor is used to increase the diffusion, the end conductivity is sparse and dense, and the bottom of the light plate is diffused so that the backlight mode is affected by the light guide plate. Point when in position with reflection. When light rays destroy the full-size sheet that leaks from the shadow plane, the active surface cannot be seen. The light is scattered. Most of them use end-face illumination, diffusers, and the bottom surface of the light guide plate is usually shaped on the end surface of the light guide plate With the help of the cold shadow mask, when most of the light hits the diffuse point on the bottom surface, it reflects back and emits light from the front of the light guide plate evenly. The reflected light is reflected back to the light guide plate again, so that the light emitted from the light guide plate is divided into the shadows of the diffusion points, so the diffusion is more uniform. One of the objectives of the new content is to add a layer of micro-lenses to the light-guiding composite structure to first improve the radiation efficiency of the two lights. Another purpose of the new lens is to provide a light-transmitting material to expand the gap of the micro-lens array to cover the gap of the micro-lens array, so as to improve the irradiation efficiency of the incident light in the gap of the micro-lens array. "Gay called this" The present invention discloses a light-guiding composite structure including a micro-lens system composed of a plurality of ^ lenses and a light-guiding plate carrying the micro-lens system

M275427 9, Creative Instructions (3) Type to Han. Each micro lens is added with a light-transmitting material to enlarge the gap between the micro lenses and the micro lens. Embodiments The direction explored by the present invention is a light-guiding composite structure. In order to fully understand the new model, detailed descriptions will be provided in the following description. Obviously, the implementation of the new model is not limited to the specific details familiar to the relevant technology. On the other hand, the well-known composition or steps are not described in detail to avoid unnecessary restrictions on the new model. Two preferred embodiments of the new model will be described in detail below, but in addition to this: ^ AL _L — leaf? In addition to Tian Baoshu, the new model can also be widely implemented in other embodiments, and the scope of the new model is not limited, which is subject to the scope of subsequent patents. Enrichment can spread as much as possible on the light guide plate to improve the light diffusion sheet system 12 2 ’micro lens bearing layer, as the first configuration in the light guide

When the light incident on the light guide plate is directed upward, the refracted light only faces upward 'so the light distribution is not even. To this end, the new model ^ adds a layer of micro lens system to change the light path, and the irradiation efficiency of light expansion. Therefore, a specific example of the present invention is a second light guide plate composite structure, as shown in FIG. 1A, which includes a micromirror / light guide plate 14. The trial lens system 12 includes a plurality of micro lenses. The system 12 may be carried by a light guide plate, or may be carried by a medium 16 and arranged on the light guide plate at a preset appropriate distance. The micro lens system is formed by a mold and is coated on the light plate 14 or the carrier medium layer 16. The micro lens system has a

M275427 IV. Creative Instructions (4) Define physical and optical characteristics to control the path of light from the light guide plate incident on the micro-lens system, thereby providing a light field, so that the micro-lens system 1 2 and the light guide plate 14 form a light guide. Light diffusion screen with light nature. The light from the light guide plate is emitted by the light source 144, reflected by the light reflecting layer 142, and then refracted. Generally, there is a gap in the arrangement of the micro lens array. This is due to the consideration of the difficulty in the manufacturing process, so that the incident light in the gap portion is not easy to use. The new type is coated with a layer of light-transmitting material on the micro-lens array to enlarge the shape of the micro-lens to expand the gap, thereby improving the lighting performance of the light. Accordingly, a specific embodiment of the present invention is a light-guiding composite structure, as shown in the second figure, including a micro lens system 22 and at least one carrier medium layer 24 carrying the micro lens system. The media bearing layer may be a light guide plate, or may be disposed on the light guide plate at a predetermined distance, such as the fourth figure and the first figure. The micro-lens system 22 includes a plurality of micro-lenses 2 22, and each micro-lens 222 is composed of a first layer 2221 and a second layer 2222. In this specific embodiment, the first layer 2221 and the second layer 2222 are used to indicate that the micro lens has a multi-layer structure, and is not intended to limit the specific embodiment. In addition, the refractive index of each layer may be all the same, all different, or partially the same. The micro-lens system 22 is configured on the carrier medium layer 24. The micro-lens system has predetermined physical, physical, and optical characteristics to control the path of light incident on the micro-lens system 22, thereby providing a light field to make the micro-lens system 22 and bearing 24 form a light-diffusing screen with light-guiding properties. ,

m 1 p. 8 M275427 4. Creation instructions (5) In addition, ‘the first refractive index and the first refractive index may be the refractive index’ to provide different physical physical values including reflection coefficient, semi-inclination, and symmetry. For example, when the third figure is at the first refractive index, the light incident on the center of the incident light 28 that is refracted by the total reflection twice after being reflected by the surrounding parts will be concentrated. The rate can be the same or different from the second fold, which is less than the second refractive index or greater than the second characteristic and optical characteristics, where the diameter, size, point distance, shape, and smoothness are shown above. When the first refractive index can be When it is the small first layer 2221, part of the incident light goes out, so that the incident diameter of the incident light on the microlens 2 2 2 will be controlled toward the microlens 2 2 2 The above-mentioned carrier medium 24 may be transparent or non-transparent. In addition, The microlens 222 may further include one or more astigmatism bodies. The astigmatism body may be an isotropic light disperser or an anisotropic light disperser, such as iigh1: diffusing particles. Or a large diffuser. In addition, the micro-lens system 22 may be an array of regular or irregular arrangement, and the bottom pattern of the micro-lens 222 disposed on the carrier medium layer may be composed of one or more geometric figures. In this way, it can be avoided that because the arrangement of the micro-lenses 2 2 2 is too neat, the viewer may perceive that a part of the area looks particularly bright and the part of the area looks particularly dark due to the phenomenon of dry light emission. For example, the bottom of each microlens 222 is selected from one of the following groups: Triangular, rectangular, polygonal, circular, oval, fan-shaped, or any other geometric figure. Moreover, the micro-lens system 22 may be a plano-convex micro-lens system, a plano-concave micro-lens system M275427, creative instructions (6), a convex-convex lens system, a convex-concave micro-lens system, or a concave-concave micro-lens system. The composition of the micro-lenses 2 2 2 in the known lens system 22 is not limited. In addition, the surface of the micro-lenses 222 may be partially or entirely astigmatism. In addition, the surface of the micro lens can be further divided into the first surface 2226 and the second surface 2228, and the second surface 2228 is located between the first surface 2226 and the carrier medium layer 24. A light = total reflection light can be coated on the second surface 2228. The first refractive index may be smaller than the second refractive index 犄, and the incident light 28 incident on the surrounding portion of the microlens 222 is irradiated into The light is diffused toward the center of the microlens 222 by control, thereby enhancing the light irradiation efficiency. In this way, the incident light in the gap portion can be fully utilized. The combined structure can be applied to the structure that condenses or expands the light path, thereby achieving the effect or enhancing the illumination efficiency of light. It is used in or included in the light guide of the rear-projection TV or the front-projection 7 projector or TV. The micro-lens array can be not only the micro-lens array but also the light divergence of the various embodiments of the present invention, which can be used to match other structures that can be changed to other light paths. For example, the novel light-guiding composite structure can be a rear projection display device (such as a front projector) display device (eg, in terms of effect. In addition, the microlens array gap (no seam) having a gap between the microlenses applied by the present invention) Obviously, according to the description in the above embodiment, the new model may have a lot of M275427. Fourth, the creation description (7), ------ many corrections and differences. Due to the + + to understand, The above two: in the scope of the appended claims, in other embodiments, the == this = type can also be broad, it is not used to limit the application of this new model. The best embodiment departs from the spirit of this new type of households. The households of other households are completed. Anything that is not included in the scope of the following patent applications.

Page 11 M275427 Simple description of the kitchen style [Simplified description of the surface] The first picture is a cross-sectional view of the prior art; the second picture is a cross-sectional view of an embodiment of the present invention; the third picture is a view of the present invention. A schematic illustration of a specific embodiment; and the fourth A and the fourth B® are schematic illustrations of one specific embodiment of the present invention. [Description of main component symbols] 12 micromirror X system 14 light guide plate 142 reflective layer 144 light source 22 micromirror; system 222 removal lens 2221 笫 one layer 2222 second layer 2226 first surface 2228 second surface 24 bearing media layer 28 incident Part 282 of incident light

12th I

Claims (1)

M275427 5. Scope of patent application 1. A light-guiding composite structure 'The light-diffusing light-guiding composite structure includes: a micro-lens system, the micro-lens system includes a plurality of micro-lenses, each of which has a first A first layer having a refractive index and a second layer having a second refractive index; a light guide plate for carrying the micro lens system, wherein the micro lens system is formed by a mold and is Configured on the carrier medium layer, the micro-lens system has predetermined physical and optical characteristics to control the path of light from the light guide plate incident on the micro-lens system to provide a light field so that the micro-lens system and the The light guide plate forms a light-guiding composite structure with light-diffusing properties. 2. The light-diffusing light-guiding composite structure according to item 1 of the scope of patent application, wherein the first refractive index is different from the second refractive index. The light-diffusing light-guiding composite structure described in item 丨 of the 3.2 patent application scope, wherein the first refractive index is the same as the second refractive index. 4. The light-diffusing light-guiding composite structure described in item 1 of Lishen Clear Range, from the above-mentioned physical values includes reflection coefficient, radius, size, point distance, shape, light vehicle tendency and symmetry. 5. According to the scope of the patent application, the above-mentioned micro-lens disperser) 〇 The light-diffusing light-guiding composite structure described in item 1 includes an isotropic light (isotropic light Page 13 M275427 V. Scope of patent application Wherein the above micro lens includes a first surface and a second surface, the second surface is between the first / surface and the carrier medium layer. 1 3. The light-diffusing light-guiding composite structure according to item 12 of the patent application scope, wherein the second surface is coated with a light reflecting layer. 14 · The light-diffusing light-guiding composite structure according to item 1 of the patent application scope, wherein the above-mentioned micro-lens system and the light-guiding plate are included in a rear projection display device. 15. The light-diffusing light-guiding composite structure according to item 1 of the scope of patent application, wherein the above-mentioned micro-lens system and the light-guiding plate are included in a front projector display device. 1 6-A light-diffusing light-guiding plate composite structure, the light-diffusing light-guiding complex structure includes: σ a micro-lens system, the micro-lens system includes a plurality of micro-lenses, each of which consists of a micro-lens A first layer having a refractive index and a first layer having a second refractive index; a carrier medium layer; the carrier medium layer is used to carry the micro lens system; a light guide plate, and the light guide plate is connected with The carrier medium layer maintains a predetermined distance; wherein the micro lens system is formed by a mold and configured on the carrier Page 15 M275427 V. Patent application scope On the media layer, the micro-lens system has predetermined physical and optical characteristics to control the path of light from the light guide plate incident on the micro-lens system to provide a light field so that The micro lens system, the carrying medium layer and the light guide plate form a light-guiding composite structure with light-diffusing properties. 17. The light-diffusing light-guiding composite structure according to item 16 of the scope of patent application, wherein the first refractive index is different from the second refractive index. I 1 8 The light-diffusing light-guiding composite structure according to item 16 of the scope of patent application, wherein the first refractive index is the same as the second refractive index. 19 · The light-diffusing light-guiding composite structure as described in item 16 of the scope of patent application, wherein the above-mentioned physical values include reflection coefficient, radius, size, pitch, shape, optical axis tendency, and symmetry. 2〇 · The light-diffusing light-guiding compound described in item 16 of the patent application scope ^ light disperser) 〇21 · The light-diffusing light-guiding composite structure described in item 16 of the patent application scope The micro lens contains an anisotropic light disperser. Page 16 M275427 V. Patent application scope 22. The light-diffusing light-guiding composite structure described in item 丨 6 of the patent application scope, wherein the above micro-lens includes a astigmatism surface. 2 3 · The light-diffusing light-guiding composite structure as described in item 6 of the patent application scope, wherein the above-mentioned micro-lens system is an array arranged regularly. 24. The light-diffusing light-guiding composite structure according to item 16 of the scope of patent application, wherein the above-mentioned micro-lens system is an array of irregular arrangement. ® 2 5 · The light-diffusing light-guiding composite structure according to item 16 of the patent application scope ′, wherein the above-mentioned micro-lens is disposed on the bottom of the carrier medium layer and the pattern includes at least one geometric figure. 2 6 · The light-diffusing light-guiding composite structure according to item 16 of the patent application scope, wherein the above micro-lens system is selected from one of the following groups: convex-convex micro-lens system, convex-concave micro-lens system, concave-concave micro Lens system, plano-concave lens system, and plano-convex lens system · Lu 27 · The light-diffusing light-guiding composite structure described in item 16 of the patent application scope ', wherein the above micro-lens includes / a first surface and a second surface, The second surface is interposed between the first / surface and the carrier medium layer. The light-diffusing light-guiding composite structure described in item 27 of the patent application scope. M275427 5. The scope of patent application, in which the second surface is coated with a light reflecting layer. 29. The light-diffusing light-guiding composite structure according to item 16 of the scope of patent application, wherein the above-mentioned micro-lens system, the carrier medium layer and the light-guiding plate are included in a rear projection display device. «30. The light-diffusing light-guiding composite structure described in item 16 of the scope of application, the above-mentioned micro-lens system and the carrier medium are included in a front projection display device. 〃 β guide nine plate Page 18