TWM264504U - Microstructures on a light guide plate - Google Patents

Description

M264504 Creation Note (1) Technical Field] In particular, the present invention relates to a microstructure of a light guide plate (a microstructure for refracting light. [Prior Art] The plate and plate SE * '在 今 j 丁 丨 α (LCD) includes There is a backlight module on the rear surface of the liquid crystal display panel showing the shadow line. And the backlight module, the light source that displays the surface line, is a light guide plate that guides light so that the light can illuminate the liquid on the rear side of the light guide plate ... Light diffusion sheet, in which the light guide plate ancient fish, 'lead to its light-emitting surface, and then the bottom surface is usually processed with dense microstructures. In recent years, in computer monitors, since LCD has been Gradually replacing the CRT, the speed of the light guide plate used in LCD backlight modules will increase in demand. In addition, the light guide plate is also widely used in pDA, mobile phones, ultra-thin light boxes, light film viewing film 1, And high-grade lamps and other products are 'widely used'. With this, the light guide plate has become one of the important components of modern science and technology, but how to emit a good light guide effect to increase the light guide and the brightness of the light uniformity = The light guide plate has become one of the important topics at present. Please refer to the first figure, which shows a conventional light guide plate (丄 〇). The light guide plate (1 〇) has a light emitted from the light source (2 〇) ^ As shown by the arrow), the lower end surface (11) incident thereon, and dense microstructures (1 2) are arranged on the lower end surface (1 1). Because the microstructures (1 2) have a circular shape and Embossed on the lower end surface (1 1), two

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M264504 Fourth, the creative instructions (2) cannot allow more light to be refracted, so the angle of the light will be smaller than the total reflection angle, and the light guide plate (i 〇) and uniformity will be poor. The first brightness is another conventional light guide plate (i 0). Please refer to the second picture. The microstructure (1 2) is recessed and formed on the lower end surface (2 i β, jf-shaped groove). (2 〇) The light emitted will increase: 邋 I refraction and increase energy loss, so that the light guide plate = the light guide effect is worsened, and the output brightness cannot be improved. 丄)) Light guide! ΐ; See the third and fourth pictures shown in the figure 'shows two other conventional 2 plates (1 0), regardless of the microstructure (sweat protruding from the upper end surface (1? ν 〇y) or 疋 depressions are formed on the upper end surface (] d), and the structure of the non-circular grooves combines the light emitted by the 丄 -second fight: the white light source (2 0) The light-guiding effect of the pole (〇) becomes worse, and the brightness is brighter:… for the first reason, for Shang Chengxi ’s penetration α ^ again…, / Andersen ’s Today, Cheng Weiyi & = # =, trapped, seeking Ideal, practicality, and progress are the goals that need to be strived for. [New content] / The main purpose of this creation is based on) 'The light guide plate is equipped with microstructures:,: jj 光 板 微 结 f (— shape In this way, it is possible to increase the light guide plate. The microstructure is roughly the edge of the water drop. Based on the uniformity provided by this creative—species 2. The microstructure is arranged on the light guide plate, and the microstructure of the light guide plate (1). The end face of the light guide plate. 、、、 ° The structure is distributed in the shape of a drop.

M264504

Regarding this creation A + ,, _ ^ ^ Ma used the techniques and methods to achieve the above-mentioned goals. Take ten best feasible embodiments and explain in detail with the drawings. [Implementation] First, please refer to the fifth and sixth figures, a light guide plate microstructure (a) provided by the first embodiment of this creation, the light guide plate (30) has an incident surface (31) for receiving light, and an upper end surface (32), which is connected to the incident surface (3 1), and is used to guide light out of the light guide plate (30). (32) Relative to the lower end surface (33), and a plurality of microstructures (40) are preset on the lower end surface (33). It is worth noting that each microstructure (40) is a water drop type and The distribution is convexly arranged on the lower end surface (3 3) of the light guide plate (30), and each droplet-shaped microstructure (40) includes a microstructure radius R, a microstructure depth D, and a horizontal angle Θ, wherein the microstructure radius R ranges from 5 to 5 0 0 // m, microstructure depth D ranges from 5 to 5 0 0 // m, the angle of the horizontal angle of the hypotenuse of the microstructure 0 ranges from 3 ° to 60 °. In addition, the The center line (41) of the droplet-type microstructure (40) is perpendicular to the incident surface (31) of the light guide plate (30), and its sharp point (4 2) faces the light guide plate (30). Exit face (31), and the water droplets micro structure (40) at the bottom (43) is circular in shape. Accordingly, as shown in the seventh figure, in the implementation state of the creation of this case, a light source (50) is provided on the incident surface (31) of the light guide plate (30), and an end surface (33) is provided below the light guide plate (30) There is a reflective sheet (6

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Fourth, the creative instructions (4) 0) 'to be light source (50) to produce light, lines (such as arrow-drop microstructure (40)) to allow more first = fold; too much so that the final angle of light emitted is greater than Full reflection, (30) brightness and uniformity. Please refer to the eighth picture for the guide board. The second implementation of this guide is the microstructure of the light guide board (1). Example, so I will not repeat it here, = struct (4.), the structure is the same as the first-^ 1 J Dan negative description, and the difference is that: the water droplet-type microstructure (4㈡ 其 & 4 light guide plate (30) Human shooting surface (31) ") The direction is the greedy structure " 0) point. The direction of the point (4 2) is the former =: the droplet-type microstructure, which also passes through the droplet-type microstructure (4 ,; and Second, 50), according to the line, the light is refracted, so that the light finally allows more light to increase the light guide. The light output is greater than the total reflection angle. Please refer to the ninth picture, this creative flute 1 — Microstructure of the light guide plate (- ), This micro-junction provides an example, so it will not be repeated here, and it is different: two: the same as the first micro-structure of the water drop type (4 〇) injury πη: The lower end surface (33 W leads to this! The light plate (30) is provided with a concave sample of the water-drop type microstructure (40). The lower surface (33)) is shown in the cloth. According to this, as in the tenth figure, the light plate (30), the shooting surface (31) points, 42)! The direction of the guide (4 0), the sharp point (4 2) is toward the center == the water droplet type microstructure J 1 and the light source ( 5 〇), and by Η

Page 13 M264504 IV. Creative Instructions (5) The water-drop microstructure (reduces the light (such as the utilization of the arrow highlights to make the uniformity. 4 0) the hypotenuse (see 4) of the second refraction, the light guide plate (3 〇) Obtained 4) Light guiding effect, which can reduce the energy loss, improve the brightness of the light and ask for a light guiding example. The bottom surface has water droplets (40 (31) direction) Micro-knots, so at the tip of the water drop type (33-type micro-knots), the oblique change of the back side)) secondary plate (3 eleven patterns (one is no longer micro-structure), making the structure (4 points (4 In other words, the light source (edge (4 refraction, 0) obtained), the microstructure (more details, and the difference (40) is the groove structure of the concave light-guide plate (3 0) 0) 2) is the back light The water-drop type microstructure 5 0 ′ ′, 4) light guiding effect, reducing energy loss, resulting in better brightness. Fourth embodiment 4 0) The result is: at the lower end face of the light guide (, and the water plate ( 3 0 (40) Through the water can be reduced 'Tinan's luminosity and uniformity provided one is the same as the third plate (3 0) 3 3) Structure) The sharp point of the incident surface (4 2 drop-type microstructured light (such as the utilization rate of the arrow, the degree. One of 0)) is a radial typed micro-junction incident surface. Please refer to the first type of light guide. (4 (31

卞 一 、 三 图 图 I plate microstructure (1) t Create the yoke rq η mentioned in the fifth embodiment, 'the plurality of water drop type microstructures (4 、, 0υ) are incident, and fq light plate (3 〇) H ) (That is, the light source) is placed at 0) / 丨, standing on (3 3) 'and the water droplet) (that is, the twelfth 1) _ moonlight guide plate (3 0) 11 households are not) or the water droplet Microstructure

Page 14 M264504 Fourth, the sharp point (42) of the creative instructions (6) (40) can face the light guide plate (30) and the incident surface (31) (as shown in the thirteenth figure), and the effect of the fifth embodiment is the same Based on the above, it will not be repeated here.

Please refer to the fourteenth and fifteenth drawings, a light guide plate microstructure (a) provided by the sixth embodiment of the present invention. The size of the water drop type microstructure (40) is incident with the light guide plate (30). The surface (3 1) (ie, the light source) is changed as it approaches. The farther away from the light guide plate (30) the incident surface (3 1), the larger the water droplet type microstructure (40), but each adjacent water droplet type The distance between the microstructures (40) is fixed, and the sharp points (42) of the waterdrop-type microstructures (40) can be directed toward the incident surface (31) of the light guide plate (30) (that is, shown in Figure 14). Or the sharp point (4 2) of the water droplet type microstructure (40) is the entrance surface (31) of the light guide plate (30) (that is, shown in FIG. 15), and the effect of the sixth embodiment is the same Based on the above, it will not be repeated here. As shown in Figures 16 and 17, the light guide plate microstructure (1) provided in the seventh embodiment of the present invention, the water droplet type microstructure (40) is spaced apart from the light guide plate (30) incident surface ( 3 1) (that is, the light source) varies depending on the distance. The farther away from the incident surface (3 1) of the light guide plate (30), the smaller the distance between the droplet-type microstructures (40), the higher the arrangement density, but the droplet-type The size of the microstructure (40) is fixed, and the cusp (42) of the waterdrop-type microstructure (40) can be turned away from the incident surface (3x) of the light guide plate (30) (that is, shown in Figure 16). , Or the tip of the droplet-shaped microstructure (40)

M264504 Fourth, the creation description (7) The point (4 2) is directed toward the incident surface (3 1) of the light guide plate (30) (that is, shown in Figure 17), and the effect of the seventh embodiment is the same as above, so This is not repeated here. Please refer to FIG. 18. As shown in FIG. 18, a light guide plate microstructure (1) provided by the eighth embodiment of the present invention is the same as that of the first embodiment. No further details, but the difference lies in that the shape of the bottom (4 3) of the water droplet type microstructure (40) is tapered.

Please refer to the figures 19 and 20, a light guide plate microstructure (1) provided by the ninth embodiment of the present invention. Each microstructure (40) is a water drop type and is distributed and convexly arranged on the light guide plate ( 3〇) the upper end surface (3 4), and the cusp (4 2) of the water-drop type microstructure (40) can be turned away from the incident surface (3 1) of the light guide plate (30) (that is, shown in FIG. 19) ), Or the sharp point (4 2) of the water-drop type microstructure (40) may be directed toward the incident surface (31) of the light guide plate (30) (ie, as shown in the twentieth figure). Similarly, the light source (5 0) When light is generated (as shown by the arrow), more light parameters can be refracted through the water droplet-type microstructure j 4 0), so that the light is finally

The angle out is larger than the total reflection angle, which improves the light output and uniformity of the light guide plate (30). As shown in Figs. 21 and 22, the tenth embodiment of the present invention presents a microstructure (a) of a light guide plate of /, where each microstructure (40) is a drop shape and is formed in a recessed shape. The upper end face of the light guide plate (3 0)

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Fourth, the creation description (8) if ί, and the cusp of the waterdrop-type microstructure (4 0) (4? W back: light plate ㈡0) incident surface (31 can) 'or: waterdrop-type microstructure (4 ... The sharp point (dagger ^ light plate (30)) is incident on the surface, wait for the light source (50) ▲ to generate light (such as an arrow = catty;): make the angle of the final light emitted is greater than the total reflection angle; (3 0) light Brightness and uniformity. The above-mentioned "guide plate" is mainly provided on the light guide plate with a microstructure structure, and the microstructure is almost water droplet-shaped, thereby increasing the light guide plate brightness and uniformity. Therefore, the practicality of this creation is beyond doubt. In addition, the structure disclosed in this example has not been seen in publications before application and has not been used publicly. Therefore, the "newness" and "progressiveness" of this creation岣 ^ In accordance with the 'new patent application in accordance with the law, I would like to ask for your review and grant a quasi-patent as soon as possible.

Page 17 M264504 Brief description of the diagram Schematic part: The first diagram is a schematic diagram of the implementation state of a conventional light guide plate. The second figure is a schematic diagram of the implementation state of another light guide plate (1). The third diagram is a schematic diagram of the implementation state of another light guide plate (2). The fourth diagram is a schematic diagram of the implementation state of another light guide plate (3). The fifth figure is a sectional view of the first embodiment of this creation. The sixth figure is a top view of the first embodiment of this creation. The seventh figure is a schematic diagram of the implementation state of the first embodiment of this creation. The eighth figure is a schematic diagram of the implementation state of the second embodiment of this creation. The ninth figure is a cross-sectional view of the third embodiment of this creation. The tenth figure is a schematic diagram of the implementation state of the third embodiment of this creation. The eleventh figure is a schematic diagram of the implementation state of the fourth embodiment of this creation. The twelfth figure is a schematic diagram of the microstructure distribution in the fifth embodiment of the present invention (1). The thirteenth figure is a schematic diagram of the microstructure distribution in the fifth embodiment of the present invention (two). The fourteenth figure is a schematic diagram of the microstructure distribution of the sixth embodiment of the present invention (1). The fifteenth figure is a schematic diagram of the microstructure distribution in the sixth embodiment of the present invention (two). The sixteenth figure is a schematic diagram of the distribution of microstructures in the seventh embodiment of the present invention (· 1). The seventeenth figure is a schematic diagram of the microstructure distribution of the seventh embodiment of the present invention (two). The eighteenth figure is a cross-sectional view of the eighth embodiment of this creation. The nineteenth figure is a schematic diagram of the microstructure distribution of the ninth embodiment of the present invention (1). The twentieth figure is a schematic diagram of the microstructure distribution of the ninth embodiment of the present invention (2). The twenty-first figure is a schematic diagram of the microstructure distribution of the tenth embodiment of the present invention (1).

The M264504 diagram on page 18 is a simple illustration. The twenty-second figure is a schematic diagram of the microstructure distribution of the tenth embodiment of this creation. (10) Light guide plate (11) Lower end face (12) Microstructure (13) Upper end face ( 20) Light source (30) Light guide plate (31) Incident surface (32) Emission surface (33) Lower end surface (34) Upper end surface (40) Microstructure (41) Centerline (42) Sharp point (43) Bottom (44) Beveled edge (50) light source (60) reflector

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Claims (1)

M264504 This kind of light guide plate microstructure (structure, each microstructure 俜 is walking ^ on its light guide plate is arranged with a structure-water drop type and distributed on the end face of the light guide plate 2 · According to the scope of the patent application often Ί, where each water drop type micro: Take :: ;;: The light plate microstructure (-) is attached to the lower end of the light guide plate. 3 · According to the patent application standard ifi potential, the light guide plate described in item 1 of Yizhong Geyou and Yijing I Microstructure (1), the water droplet-type microstructures are distributed on the upper end surface of the light guide plate. 4 pot ϊ 11: Microstructure of the light guide plate described in item 1 of the scope of interest (-) D: water; angle The θ microstructure includes a microstructure radius R and a microstructure depth 5 According to the scope of the patent application, the microstructure radius of the light guide plate described in item 4 of the microstructure radius range is between 5 and 50. 6. According to the microstructure (1) of the light guide plate described in item 4 of the scope of the patent application, the depth of the microstructure in "" ranges from 5 to 50 0 // m. 7 · According to the item 4 of the scope of patent application The light guide plate microstructure (1), wherein the horizontal angle of the hypotenuse of the microstructure ranges from 3. to 60. 8 • The light guide plate microstructure (1) according to item 2 of the patent application scope, wherein the water droplet The microstructure is convexly arranged on the lower end surface of the light guide plate. Page 20 M264504 V. Scope of patent application 9 · According to the microstructure (1) of the light guide plate according to item 2 of the scope of the patent application, wherein the water droplet type microstructure is provided on the lower end face of the light guide plate. 10. According to the light guide plate microstructure (1) described in item 3 of the scope of the patent application, the water drop type microstructure is convexly arranged on the upper end surface of the light guide plate. 11. According to the microstructure (1) of the light guide plate according to item 3 of the scope of the patent application, the water droplet type microstructure is recessed on the upper end surface of the light guide plate. 12. According to the light guide plate microstructure (1) 'described in the first patent application scope, wherein the center line of the water drop type microstructure is perpendicular to the light guide plate incident surface, and its sharp point is directed toward the light guide plate incident surface. The f 3 basin is based on the light guide plate microstructure described in Item 1 of the scope of the patent application (one ^ ^ 4 water drop type microstructure whose center line is perpendicular to the light guide plate incident surface ′), and the point direction is the back light guide plate incident surface. If the patent application scope of the light guide plate micro-item described in item 12 or 13 ^), wherein the droplet-shaped microstructures are distributed in a row shape in the light guide plate micro-work described in the light guide iUi application patent scope item 12 or 13, The droplet-shaped microstructure is displayed from the incident surface of the light guide plate. Page 21 M264504 5. Scope of patent application Radiation is distributed on the end face of the light guide plate. 16. According to the microstructure (1) of the light guide plate according to item 12 or 13 of the scope of the patent application, the size of the droplet-shaped microstructure varies with the distance from the incident surface of the light guide plate, As the distance increases, the droplet-type microstructure is larger, but the distance between each adjacent droplet-type microstructure is fixed. 17. According to the light guide plate microstructure (1) described in item 12 or 13 of the scope of the patent application, the distance between the droplet-shaped microstructure and the light guide plate incident surface varies, and the farther away from the light guide plate incident surface, The smaller the distance between the droplet-type microstructures is, the higher the arrangement density is, but the size of the droplet-type microstructures is fixed. 18. According to the light guide plate microstructure (1) described in the patent application scope No. 12 or 13, the water droplets The shape of the bottom of the microstructure is circular. 19. The light guide plate microstructure (1.) according to item 12 or 13 of the scope of the patent application, wherein the shape of the bottom of the water droplet type microstructure is tapered. Page 22