TWM243670U - A novel light control component with random grating structure for enhancing the reflective image quality in reflective/transflective LCDs - Google Patents

Description

M243670 V. Creation Description (1) [Technical Field to which the New Type belongs] This creation is a reflection light distribution control element applied to a reflective / transflective liquid crystal display. By this, a reflection light distribution control element can make the reflection type / The transflective LCD monitor's reflected image improves its image uniformity, brightness, and contrast within an effective viewing angle. To achieve high-quality display effects. [Previous Technology] In recent years, due to the increasing demand for portable displays, direct-view reflective / transflective liquid crystal displays have received much attention because of their unique power-saving, thin and light characteristics. Direct-view reflective / transflective LCD monitors in strong ambient light. In addition to the backlight module (back 1 ight) to reduce power consumption, instead of using liquid crystal display? The reflective surface (reflector) at the bottom reflects the ambient light. After the light passes through the liquid crystal layer twice, it is modulated by the liquid crystal layer to produce an image. Since the reflective / transflective liquid crystal display 2 (first image) reflects the incoming ambient light R1 to generate an image ', the image quality observed by the observer 3 is determined by the distribution of these reflected light. For a general specular reflection surface, the reflected light and the incident light are clamped at the same angle at both ends of the normal of the reflection plane, which are called the incident angle I and the reflection angle r, respectively. This is called specular reflection. Therefore, when ambient light is incident on the reflective / transflective liquid crystal display 2 in an oblique direction, the reflected light is also distributed in the corresponding oblique reflection angle R distribution area. However, for the normal observing angle at which Observer 3 is often used, it is often not enough light to be observed,

M243670 V. Creative Instructions (2) Therefore, the reflective / transflective liquid crystal display 2 cannot display sufficient brightness and contrast in the main direction. At the same time, the surface reflection light R3 (glare) generated by the display surface reflection will overlap with the modulated strongest image reflection light, resulting in a decrease in image contrast. The image of the light source is even observed in this direction. In order to improve these problems, direct-view reflective / transflective liquid crystal displays can be more widely and successfully applied in different fields, and new optical components and system designs have been continuously developed. These include surface scattering films (FSF: Font scattering, developed by Prof. Uchi da) of Tohoku University, Japan, in 1995, and holographic reflection plates (1,997 and 98) proposed by Dupont ( HR: Holoographic reflector) 2) and holographic light control film (H-LCF: 3), 1998 Surface Sharp Reflector (RSF: Rough surface of ref lector) released by Japan Sharp Corporation 4), Inclined micro-bump reflector (MSR: Micro slant reflectoi05) developed by Taiwan Industrial Technology Research Institute (ITRI) in 1999, and developed in 2000 by Professor Xie Hanping's laboratory at National Taiwan Jiaotong University, Taiwan Asymmetric micro-lens array light control film (Dragon 4-1 ^ ?: asymmetrical raicrolens array light control film) 6) 'These six structures can improve the image quality of direct-view reflective / transflective liquid crystal displays', but there are also its Disadvantages, the functions and advantages and disadvantages of these six structures are compared in more detail in the following table 1:

Page 8 M243670 V. Creative Instructions (3) Concerning Optics Principles Process Difficulty Price Uniformity Brightness Advantages Disadvantages HR mmmm Concentrated Difficulty High 髙 Medium Medium 髙 Brightness Difficult to Make 髙 Price RSR Bottom ΜΙίίδ Ugly Difficult High School Uniform 髙 Wide 髙 Uniformity is not easy to make 髙 Price MSR Bottom light collecting type is extremely difficult 髙 Extremely 髙 Medium to medium storage is not easy to make High price FSF Surface film thief type is extremely easy Low Low Low Narrow Low Price Easy to make Viewing angle H-LCF surface film light-collecting type is easy to produce medium narrowness and easy to produce narrow viewing angles The reflective plate components at the bottom of the box have the disadvantages of being difficult to manufacture and high price, and the components in the form of surface film are relatively easy to manufacture. However, in terms of the optical principle, the light-concentrating component focuses light Within a certain angle, the brightness is higher but the viewing angle is narrower, while the astigmatism type It spreads evenly to many angles, so it has higher uniformity and wider viewing angle, but lower brightness. Because the energy of the incident light in the external environment is fixed, the intensity of the reflected light will be fixed without adding any self-luminous elements. Therefore, if the reflected light is to be evenly distributed over a wide viewing angle, its The brightness will be reduced; if the reflected light is concentrated at a certain angle to increase its brightness, the viewing angle will be narrowed, which is an inevitable physical phenomenon. However, reflective / transflective displays are mostly used for small and medium-sized panels, such as mobile phones and personal digital assistants (PD A). They are not as important as Jew. C produces this pair. On the other hand, Pinjiao video-type belts can be carried with you (

Page 9 M243670 V. Creative Instructions (4), so this creation will use Random Grating Light Control Film / Ref lector to control the light distribution angle of reflected light, making it originally The light that diverges to the horizontal (left and right) viewing angle is concentrated into the vertical (up and down) viewing angle, and the vertical (up and down) reflected light distribution is adjusted by using different designed grating widths to achieve high brightness and wide Viewing angle and highly uniform reflected light distribution.

Page 10 M243670 V. Creation Instructions (5) [Reference] [1] T. Uchida, T. Nakayama, T. Miyashita, and T. Ishinaba: Asia Display '95, Proc. 15th Int'l Display Research Conf. IDRC, Hamamatsu, Japan, 1995, p. 599.

[2] A. G. Chen, K. W. Jelley, G. T. Valliath, 丨 丨 Liquid Crystal Display Device Comprising Reflective Holographic Optical Element ", US Patent 5,663,816, September 1997.

[3] G. T. Valliath, Z. A. Coleman, J. L.

Schindler, R. Polak, R. B. Akins, and K. W. Jelley: Society of Information Display international symposium digest of technical papers. (Society for Information Display, Anaheim, 1998) p. 1139.

[4] Y. Itoh, S. FuJiwara, N. Kimura, S. Mizushima, F. Funada, and M. Hijikigawa: Society of Informat ion Display international symposium digest of technical papers. (Society for Information Display, Anaheim, 1998) p. 221.

Page 11 M243670 V. Creation Instructions (6) [5] DL Ting, WC Chang, CY Liu, JW Shiu, etc .: Society of Information Display international symposium digest of technical papers. (Society for Information Display, San Jose, 1999 ) p. 954.

[6] F. J. Ko and Η. P. David Shieh · Jpn. J. App1. Phys. Vol. 39 (2000), pp. 2647-2650.

Page 12 M243670 V. Creative Instructions (7) [New-type optical elements used to enhance the image quality of reflective / transflective liquid crystal displays' are either astigmatic or light-concentrating elements. The advantages of a wide viewing angle, but the brightness is too low due to the scattered light (Figure 2 (a)); the light-concentrating element focuses the reflected light at a single angle, which makes the reflected brightness extremely high, but the viewing angle is too narrow (Figure 2 ( b)), so it cannot provide the best reflected image quality. This creation proposes an optical arrangement of a disordered grating structure, as shown in Figure 3 (a). This structure consists of different grating widths, grating rotation angles, and two: H and 歹 j. This disordered grating structure can not only be manufactured = surface: special film 'can also be manufactured on the bottom reflective plate, 4 different manufacturing methods can be used on different application surfaces. The structure of this disordered grating mainly respects Fen # 4 t 地 丄 向 洗 # A & 、, 疋 Light control modulation for different incident angles (including longitudinal reflection / transmission and% & incident light, so that the last look Bottom) I stomach M / reflected reflected light can be effectively concentrated in the longitudinal direction (upper longitudinal effective viewing angle can achieve the ancient and ancient _ k Cheng reflection shirt image in contrast and other high-quality visual effects: redundant, uniform and flat, To achieve the above effects with a wide viewing angle and high angle, the grating rotation angle of the external ambient light 2 incident at the same angle will not be adjusted by the appropriate design angle of the reflection angle that is not positive, so that the vertical (Previous = visibility changes the reflected light in the longitudinal direction. Because of these periodic surnames M :) The reflected light intensity in the viewing angle is evenly divided-when the d steep m configuration is combined with the display, it will be related to the display.

Page 13 M243670 V. Creative Instructions (8) " '1 "'-& The periodic structure on the panel (such as the periodic day element of color filters) + σ month right color pattern (M〇 The stripes of i re) make the quality of the daytime display change. Therefore, the above-mentioned gratings should be distributed in a random arrangement on the surface film or the bottom reflecting plate to avoid the generation of cloud patterns. In addition, the diffraction element has different diffraction angles and intensities at different wavelengths, and the valley is prone to produce the phenomenon of color dispersion, and the disordered arrangement can also avoid the influence of dispersion. This creative system provides an optical element that effectively controls the distribution angle of the reflected light of a direct-view reflective / transflective display, which can make its reflected image achieve high brightness, high uniformity, wide viewing angle and high contrast in the vertical (up and down) effective viewing angle. Visual effects of isoplanar quality. As shown in the fourth figure (a), the direct-view reflective / transflective display when the new disordered light thumb structure is made into a surface film type includes a top polarizer 7 and an upper broadband phase difference plate ( Top wide band retardation film) 8. Low refractive index protection layer 9. Random grating light control film 10. Topgiass substrate 11. Color light barrier (Color filter) 12, Liquid crystal cell 13, Bottom reflector 14, Bottom glass substrate 15, Bottom wide band retardation film 16, Bottom polarization ^ (Bottom polarizer) 17. The display structure when this disordered grating structure is fabricated on the bottom reflecting plate is shown in the fourth figure (b), which includes the upper polarizer 7 and the upper broadband

Page 14 M243670 V. Creative Instructions (9)

Hif 8 丄, upper glass substrate 11, color phosphor plate 12, liquid crystal cell 13, ... sequential grating light control reflection plate 18, lower glass substrate 15, lower broadband phase plate 16, lower polarizer 17. Among them, liquid crystal gold includes transparent electricity.

Crystal layer, rhenium film transistor and other objects. K The rotation angle of the disordered grating structure of this creation will be controlled at +45. To _ ^ Figure 5 (a) does not mean that the original will spread to 360. The light in the angular range is concentrated at 45. Between 'and the external incident light is 4: the light will also be deflected to a nearly positive angle due to the diffraction characteristics of the grating structure. ~ Different grating widths P will cause different diffraction angles after passing through the grating. The width of each grating can be appropriately designed to make the reflected light nearly equal intensity and uniformly distributed in the vertical (up and down) effective viewing angle. Generally ^ "light ^ incident from _30 ° 'longitudinal (upper and lower) effective viewing angle is 0. to 0 = = ridiculous results, if you want to make the reflected light evenly distributed above and below the vertical C) effective grating angle 20 ". The visibility P needs to be between 0.5. After the rotation angle and period width of the grating are determined, all the gratings are arranged in a disorderly manner to form a pattern of the same size as the panel, except that the disorderly arrangement can be eliminated. Diffraction elements generally produce phenomena ', which can also be avoided due to the closeness to the diurnal cycle of the display: # The grating design in Figure 5 is designed with three types of rotation. Each cycle width has nine different rotation angles. Tian arranges the disordered grating structure as shown in Figure 5 (b). This 27, and light, this disordered grating structure can be made on a plastic film.

Page 15 M243670 V. Creative Instructions (ίο) 'Semiconductor lithography, Ion doping or Ion exchanging, Holography, Mechanical or Laser cutting and other methods are used to produce = mold (Father mold) substrates, and an electroformed method is used to produce a metal mold (Mother mold) with a reverse structure, such as a nickel mold. piastic m〇iding) Inject ion molding and other methods to reprint the master mold structure onto the plastic film, so as long as to make a pattern ί = 'and can greatly reduce costs. After "turning: to" the plastic substrate, the person should apply a protective layer 9 on the plastic film, as shown in the fourth figure (a). The purpose of this protective layer is ::: to protect the grating structure To avoid being damaged, there is also a reduction in surface scattering caused by the structural table difference (Fr0nt, rate to improve the contrast of the display. The use method is only required to ...), the first grid film is attached to the upper glass substrate, ^ Parallax plates and polarizers can achieve the effect of controlling reflected light. The upper phase film has a simple process and is inexpensive. Using this disordered grating with a simple paste method can greatly improve the convenience, only the quality is required. In addition to the overall image product, the disordered grating structure can also be directly on the board. The production method can use semiconductor photolithography etching part reflector exchange, holography imaging, mechanical or laser mule implantation or thermal release mold, etc. The method of directly fabricating the grating structure on the display] plus =, UV glue forming and turning over, and then put a metal reflective layer, such as the glass substrate under the silver ... and then follow the general liquid page 16 M243670

Crystal Display can complete the subsequent steps in the process. Compared to the form of a surface film, the structure manufactured on the bottom reflective plate must repeat the process on the lower glass substrate of each display panel, compared to the surface mount == method three, which takes a long time The required cost is high, but due to the use of a surface film, the reflected light will pass through the grating structure twice. As shown in Figure 6 (a), 'theoretical second-order grating diffraction efficiency is about the first-order diffraction @ It is 40%. If it passes twice, its first-order diffraction efficiency is only ^^%. 'The disordered grating reflector in the sixth figure (b), because it uses a reflective diffraction element, will only pass through the disordered grating structure once, so the first order 1 spoon diffraction light efficiency is still maintained at 4 〇%; That is to say, the reflection light intensity of the disordered grating light 0 control reflector will be twice as high as that of the disordered grating light control film. Therefore, it is necessary to produce high-grade reflective / transflective liquid crystal display panels. In order to achieve the vertical direction (upper and lower: ultra-high brightness, high uniformity, high-contrast display in the effective viewing angle), the disordered grating structure can be used in addition to the second-order grating (Figure 7). ,, Fourth-order (seventh figure (b)) or more order gratings, even Blaze Grating (7th figure to the above effect. ^ 6 j violation [implementation method ] This detailed description will take the disordered grating structure made on the surface plastic film as = you explain its overall grating structure, manufacturing method, and actual distribution to verify its implementation effect.

Page 17 M243670 V. Creative Instructions (12) The grating rotation angle & of this example is nine different angles such as +20 ± 5, and 0, and the grating period is ± 15. , ± 1

Micron, 1.25 micron, 1.3 micron, 1.36 micron, 1.16 micron, 1.56 micron, 1.64 micron, 1.73 micron, 42 micron, 1.48, 2. There are a total of 18 different cycle wide productions of 06 microns, 2.2 microns, 2.36 microns, 2/2 microns, I 93, and 3.01 microns. .4 microns, 2.75 1 62 different raster patterns are arranged in a disorderly manner ^ 'A total of 9xl 8 above = sub-pattern The top view is shown in the eighth figure. The reasoning is that the structure of this design is fabricated by the semiconductor lithography process (2) 'and then the pattern is 冓 (, core) by using the electroforming turning mold, and then the mother pattern is hot-pressed or 2 = Flip onto the plastic film 'where the film thickness is only about 80 microns :::

A layer of low-refractive-index (n ~ ") surface protective layer is used to make a disordered grating light control film. The K film is attached to an actual reflective liquid crystal display, and is used in: Eldim EZContrast 160 is used to measure the reflected light. The internal measurement method is to use an external light source at -3 0. The incident light is incident on a reflective panel, and the reflected light intensity at various angles is measured above the panel, as shown in Figure 9 ° Among them, the tenth figure shows the distribution of the reflected light in the vertical (upper and lower) viewing angles. The solid line is a reflective panel with a disordered grating light control film attached, and the long dashed line is attached to the surface scattering currently used in the market. For the thin-film panel, the short dashed line is the ideal reflected light distribution curve. Since the incident light is -30. Incident, there will be a very strong specular reflection light distribution near + 30. The ideal anti-M243670 V. Creative Instructions ( 13) The light curve needs to be in the vertical (upper and lower) viewing angle of 0. to 25. There is a uniform distribution ', and the reflectance must be at least 0.8 times the reflectance of magnesium oxide, because the reflectance of the oxide town is so-called Standard white, and the general white emissivity is about 0.6 to. · 8 times the oxidation town, and the ideal reflection reflectivity is to do the same as paper, so the ideal reflected light curve will be as shown by the short dashed line in the tenth figure Θ The surface light curve distribution generally used in the market is just as the name implies. The mirror reflects the light distribution in the vertical direction. 'When approaching the specular reflection angle, the weaker the intensity is, the more positive the angle is to watch the face person' because It will be cheaper and more convenient to use than the mirror surface, but the use of disordered grating light control is the same as the solid line in the tenth figure, the distribution of reflected light is lower.) Viewing angle 3 ° ~ 1 5. The internal oxidation ball reflectance, the reflection is the most The brightness can also reach the reflectivity at the corners. It is found that using the disordered grating intensity in the vertical (upper and lower) surface scattering film attached to the reflective panel, the long dotted line in the anti-tenth figure shows this scattering. The light emitted by the film is scattered, but it can be seen from the figure that the intensity in the effective viewing angle (upper and lower) is not uniform. The reflected light intensity is stronger, the closer it is to the forward observation; however, most users are in Close to the board, and will not overlap the image viewed at close to the specular reflection angle. Therefore, although its price is low, the real display effect is not ideal. The reflection light distribution of the reflective panel made of thin film is as shown; it is obvious that when The use of disordered grating structures has been much uniform before, especially in the longitudinal direction (the reflected light intensity in the longitudinal direction can be maintained at 0.6 to 0.8 times the i rate is not much different from ordinary paper, but about 1.4 times The reflectance of magnesia is 3 times the reflectivity of magnesia when viewed from the front. It is not difficult to control the reflective panel of the film from the figure, and the effective viewing angle of the reflected light is between 0 and 20. M243670 V. Creative Instructions (14) = Text: The film is much higher and has a clear angle with the angle of the specular reflection light, that is, the user will not see the specular reflection when viewing the picture :, And can greatly increase its contrast '& and improve the overall image quality of the reflected light distribution in the vertical (up and down) viewing angle, the two-dimensional reflected light distribution on the it surface of the entire reflection panel is also an important basis for image quality analysis, =: (A) and (b) are combined with a reflective display surface of the grating light-scattering film wash disordered reflection light distribution control of a two-dimensional film. The two figures are at ^ = and the polar angle is 30. Each degree has a black point, and this point is the angle of the specular reflection of 2 lights. Because the specular reflection light intensity is too strong, it is blocked by the f mask during measurement to avoid saturation of the detector, so Most of all, this black spot will appear on the picture; the reflected light distribution of the surface scattering film can be seen from the eleventh figure (a). The reflected light is symmetrically distributed around the specularly reflected light in a circular shape. , Its brightest angle is only distributed near the specular reflection angle. However, as mentioned earlier, the lateral (left and right) viewing angle of the handheld screen is generally not valued. In addition, the brightest angle of the image is best reflected by specular reflection. The angle of separation is different, so the reflection quality of the reflective panel using the surface scattering film will not be too good. When the surface scattering film is replaced with a disordered grating light control film, the two-dimensional reflected light distribution diagram is shown in Fig. 11 (b). The light that would have been scattered to various angles is concentrated in the horizontal direction (left and right) 20. Within, and there is a clear separation from the specular reflection angle, the reflected light intensity and the contrast of the image in the effective viewing angle can be improved, and through the control of different grating widths, the uniformity of the reflected light intensity in the vertical viewing angle is also all Lift; therefore use this disordered grating light control

Page 20 M243670 V. Creative Instructions (15) = Transmissive / Transflective Liquid Crystal Display 1, which can greatly enhance its limitations. This new creation is not intended to be a model transfer for this purpose. Or the replacement of the net effect element should still be subject to the detailed description of 2: soil, which can make the purpose of cooking more familiar, which has actually met the patent ^ the artist knows that this creation can indeed reach s months. Going forward, I file a patent application

M243670

Brief description of the drawings [Simplified illustration of the drawings] The first figure: the direction of the light source and the position of the user under the general operating environment of the reflective / transflective liquid crystal display, and the angle of the reflected light reflected by the bottom flat reflector and the surface mirror. Figure 2: Schematic diagram of the reflected light distribution of optical elements used to enhance the image quality of reflective / transflective liquid crystal displays. (A) Astigmatic element and (b) Condensing element. The third figure: (a) a schematic diagram of a three-dimensional three-dimensional structure of the disordered grating structure and (b) a schematic diagram of the reflected light distribution used in a reflective / transflective liquid crystal display. The fourth figure: (a) disordered grating light control film and (b) disordered grating light control reflector used in a direct-view reflective / transflective display. Figure 5: (a) Different rotation angles and cycle widths of the disordered grating (a schematic top view after the disordered arrangement. Inverted grating light control inverse sixth diagram: (a) disordered grating light control film and (b ) Schematic diagram of the effective diffracted light efficiency of the radiating plate.

M243670 Schematic description of the seventh diagram: The disordered grating structure can be (a) a second-order grating, (b) a fourth-order grating, and (c) a blazed grating on a continuous surface. Figure 8: Actually produced Partial pattern top view of disordered grating light control film. Figure 9: Schematic diagram for measuring reflection images of reflective / transflective displays: (a) horizontal (left and right) viewing angles and (b) vertical (up and down) viewing angles. Figure 10: Reflected light distribution in vertical (up and down) viewing angles of reflective LCDs. Figure 11: Two-dimensional reflected light distribution on the half-plane above the reflective LCD. Results of (a) using a surface scattering film and (b) using a disordered grating light to control the film.

Page 23 M243670 Schematic description [Illustration of drawing number] 1. External incident ambient light source. 2. Reflective / Transflective LCD. 3. The user observes the position. 4. Reflected light distribution using astigmatism elements. 5. Use the reflected light distribution of the light-gathering element. 6. Reflected light distribution of structural elements using disordered light. 7. Top the polarizer. 8. Put on the broadband phase difference plate. 9. Low refractive index protective layer. 10. Out-of-order grating light control film. 11. Upper glass substrate. 12. Color filters. 1 3. LCD cell. 1 4. Lower the reflector. · 1 5. Lower the glass substrate. 16. Lower the broadband phase difference plate. 17. Lower polarizer. 18. Out-of-order grating light control reflector 19. Light detector. 20. Unordered grating structure 20-1. Unordered grating structure unit 21. Second-order disordered grating structure

Page 24 M243670 Brief description of the diagram 2 2. Fourth-order disordered grating structure 2 3. Continuous surface disordered grating structure R1. The incident light in the external environment. R1-1. The external ambient incident light diffracts the light through the disordered grating structure at a positive first order. R1-1-1. The external ambient incident light passes through the disordered grating structure and is the second positive first-order diffracted light. R1-1-2. The external ambient incident light passes through the disordered grating structure to the second negative first-order diffracted light. R bu 2. The external ambient incident light diffracts the light through the disordered grating structure once and negatively. R2. Reflected light reflected by the reflector on the bottom of the display. R3. Specular light reflected from the display surface. 0 j. The angle between the external ambient incident light and the forward viewing direction of the display. The angle between the reflected light from the display and the forward viewing direction of the display. 0 · Viewer's vertical (up and down) viewing angle. Φ. Grating rotation angle. P. Grating period width.

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Claims (1)

M243670 6. Scope of patent application [Scope of patent application] 1. A light control element capable of improving reflective / transflective liquid crystal display, whose main surface structure is diffraction / image quality 2. As described in the first item of patent application scope The light control element, pot power, and the angle of distribution of the reflected image in the indicator; it can change different angles: J j incident light is deflected to the required observation range using the diffraction principle. The control element can make the reflected light uniformly distributed in the vertical (upper and lower) effective viewing angle range (0. ~ 30.). 3. The light control element described in the first item of the scope of patent application, which can be produced in the form of a surface film (disordered grating light control film) or a bottom reflection plate (disordered grating light control reflection plate). 4 · The light control element as described in the first item of the scope of patent application, wherein the diffraction grating of the surface structure may be a second-order grating or a fourth-order grating or a more number of gratings or a continuous surface blazed grating (Blaze Grating ). 5. The light control element according to item 1 of the scope of patent application, wherein the diffraction grating of the surface structure may be a grating of different rotation angles, and the rotation angle thereof may be + 45. To -45. between. • The light control element as described in the first item of the patent application scope, wherein the surface junction Page 26 M243670 VI. The diffraction grating of the scope of patent application can be A $, the same period can be U-grid, and its period width 7 .: The light control element described in the first item of the scope of patent application, # 中 面 结The j-ray grating can be arranged in a random (Random) manner, which is to avoid. The moire pattern caused by the grating period and the display element day period are too close. stripe. In addition, the phenomenon of dispersion (C0lQr 仏 Coffee) will be produced by ordinary diffraction elements. 8m applies the surface film (disordered grating light control film) described in the three items, which includes low-refractive-index protection and plastic film substrates. ", The first-order gate structure 9. As described in the third item The bottom surface of the "J-shaped reflecting plate" described above includes a metal reflective layer and matte 1 ° 1; i ^ ^ ^ ^ ^ or 孰 ion / change ^ into the German method can be a semiconductor lithography or ion implantation square ΐ Work: Father i :: master molds such as filming or mechanical or laser cutting processing, such as nickel molds; then the hot stamping mold or plastic forming mold or injection molding method is used to reprint the exposed structure on the master mold to Above the plastic film substrate, and finally coating the plastic film i-board M243670 6. Applying a low-refractive-index protective layer on the scope of the patent application can be completed. 11. · As described in the patent application ^ = g = bottom reflective plate (disordered) Control the reflection plate) 'It can be fabricated by semiconductor lithography or ion implantation or thermal ion exchange or holographic imaging or mechanical or laser cutting or UV glue forming molds. ° Below the display above the glass substrate ' It can be completed if the metal is reversed as = or aluminum. Θ As silver 12. As the low refractive index protective layer described in item 8 of the scope of patent application, 1 = the refractive index difference (Δη) between the rate and the disordered grating structure must reach 13. The low-refractive-index protective layer described in item 8 of the scope of the patent application, where f stands for the disordered grating structure on the substrate, and reduces surface scattering caused by excessive distortion. Page 28