TW201213863A - Stereoscopic image system - Google Patents

Abstract

Provided is a stereoscopic image system. The system includes an image display unit having a first polarizer and a pattern retarder, as well as a polarizing eyeglasses unit having a λ /4 phase difference layer and a second polarizer, wherein either or each of the image display unit and the polarizing eyeglasses unit includes a coating layer containing liquid crystals aligned perpendicular to a coated surface, so as to reduce crosstalk occurred when viewing in inclined directions as well as the front side, in turn widening a range of visible angles in which stereoscopic images are created, ultimately enabling a large number of viewers to enjoy stereoscopic images with uniform quality in a large-scale space.

Description

201213863 VI. Description of the Invention: [Technical Field] The present invention relates to a stereoscopic image system for reducing crosstalk caused by incident light leakage on a slope (incidentally incident on both sides of the left and right sides). [Prior Art] Since the human eye is horizontally separated by about 65 mm (distance between the pupils), each eye sees a slight difference. The method of proof is that the images seen when the eyes are alternately closed and the objects are viewed by the other eye are somewhat different from each other. 10 The foregoing is 'eye-eye aberration,' which represents the difference in image position of the object seen by the left and right eyes, which is caused by the horizontal separation of the eyes. The brain processes the binocular aberrations to perceive stereoscopic images. This is the principle of stereo image reproduction. The stereoscopic system generally has a liquid crystal panel having a right-eye image region 'R, and a left-eye image region 'L, and a polarizing plate disposed on the front surface of the liquid crystal panel. The image display sheet is provided with a pattern retarder on the partial 15-light film. 70 (the circularly polarized light is projected from the left and right images of the polarizer), and the polarization axis of the left and right images of the circularly polarized light is reversely rotated. The stereo image system also includes polarized glasses that allow the user to enjoy stereoscopic images formed by the right and left eye images projected from the stereo image system. 2〇 The left circular polarized light and the right circular polarized light incident on a pair of polarized glasses are respectively converted into linearly polarized light, so that the left and right eyes distinguish the separated images, resulting in a stereoscopic image. Usually the light incident on (projected on) the front side of the polarized glasses is easy to phase

PUIDRA007TW 201213863 77 left and right polarized light incident on its slope is often converted into elliptically polarized light. In this respect, right elliptically polarized light or left elliptically polarized light can be seen in both left and right eyes. This is called 'light loss. This loss of light can cause crosstalk problems, that is, the image is poorly separated into left and right images. 5 However, the problem with the above polarized glasses is that the viewing angle of the actual stereoscopic image is limited to a predetermined range in which the light is incident only on the front side of the polarized glasses. SUMMARY OF THE INVENTION [10] In the case of the present invention, the object of the present invention is to provide a stereoscopic image system having a wide viewing angle of a stereoscopic image, thereby enabling a plurality of viewers in a large space to enjoy a stereoscopic image having a uniform quality. Another object of the present invention is to provide a stereoscopic image system that converts elliptically polarized light received in an oblique direction into linearly polarized light to improve (or reduce) light leakage caused by simultaneous projection of left and right light onto either side of the glasses, thereby suppressing the above Crosstalk caused by light loss. To achieve the foregoing objective, a stereoscopic image system is provided, including an image display unit that projects circularly polarized light, and a polarized glasses unit that respectively penetrates the stereoscopic image to the left and right eyes. The stereoscopic image system is characterized in that the image display unit includes the first a polarizer and a phase retardation film that converts light passing through the first polarizer into circularly polarized light; the polarized glasses unit includes a λ/4 phase difference (often referred to as 'delay) that converts light passing through the image display unit into linearly polarized light a layer, and a second polarizer that passes light emitted from the λ/4 phase difference layer; the light passing through the first polarizer penetrates the vertical alignment liquid 5 Μ coating before reaching the second polarizer, and the liquid crystal is perpendicular to Coating surface; a total of vertical alignment liquid crystal coating

pniDRA007TW 201213863 The surface delay 'R0' is 0 to 10 nm, and the thickness delay is 'Rth, which is 35 to 160 nm, and contains at least one layer. The thickness retardation Rth of the 'vertical alignment liquid crystal coating layer according to the present invention may be 55 to 140 nm. 5 Further, the light passing through the first polarizer can penetrate the vertical alignment liquid crystal coating before reaching the phase retardation film. Preferably, the light passing through the phase retardation film penetrates the vertical alignment liquid crystal coating before reaching the λ/4 phase difference layer. Preferably, the vertical alignment liquid crystal coating is included in the image display unit or the polarized 10 glasses unit, or both. Preferably, the light passing through the λ/4 phase difference layer penetrates the vertical alignment liquid crystal coating before reaching the second polarizer. Preferably, the vertical alignment liquid crystal coating layer comprises a reactive crystal element (RM). Preferably, the slow axes of adjacent patterns of the phase retardation film are substantially perpendicular to each other. Preferably, the second polarizer has a transparent protective film formed on one side. The stereoscopic image system according to the present invention can improve crosstalk caused by light emitted from the inclined side, thus producing a clear stereoscopic image. Since crosstalk is reduced as described above, polarized glasses having a special surface design such as a curved surface can be used. According to the stereoscopic image system of the present invention, circularly polarized light incident on the front surface and the inclined surface of the glasses can be converted into linearly polarized light in a viewing angle range (about 9 Å in the left and right directions, and about 45 in the up and down direction). Therefore, compared with the conventional technology, a stereoscopic image having excellent characteristics can be presented. ^ In addition, compared to the conventional technology, due to the stereoscopic image system of the present invention

PI1IDRA007TW 5 201213863 can have a wide range of s * a to produce a stereoscopic image viewing angle, so many viewers can enjoy the uniformity of stereoscopic images and large doors. [Embodiment] 5 I provides a stereoscopic image system, comprising: an image display unit including a first polarizer and a phase retardation film; and a polarized glasses unit having a "4 phase difference layer and a second polarizer, wherein the image display unit and The polarized glasses unit 4 or one comprises a coating whose liquid crystal is perpendicular to the surface of the coating to reduce crosstalk occurring in oblique directions and then side viewing, augmenting the viewing angle of the stereoscopic image 'final to many viewers in a large space Enjoy a stereo image with even picture quality. Hereinafter, the present invention will be described in detail in conjunction with the drawings. The stereoscopic image system of the present invention comprises an image display unit having a first polarizer 2〇 disposed on the front surface of the liquid crystal panel 1 and the phase retardation film 30, 15 and a λ/4 phase difference layer 50 and 51, and a second polarizer. 60 and 60, polarized glasses unit, wherein the light passing through the first-polarized light is transmitted through the vertical alignment liquid crystal coating 41 perpendicular to the surface of the coating before reaching the second polarizer 60 and 60'. According to an embodiment of the present invention, the first polarizer 2 is used to pass through the vertical alignment liquid crystal coating 41 (see FIG. 1) before reaching the 2〇 phase retardation film. 0 According to another embodiment of the present invention, the phase delay is adopted. The light of the film 3 可 can penetrate the vertical alignment liquid crystal coating 41 (see Fig. 2) before reaching the λ/4 phase difference layers 50 and 50. In this case, the vertical alignment liquid crystal coating may be present in the image 25 display unit (41 of Fig. 2) and the polarized glasses unit (4〇 and 4〇 of Fig. 3,

PM1DRA007TW 201213863 ), or both (41, 4〇, 4〇, Figure 4). According to another embodiment of the present invention, the light passing through the λ/4 phase difference layers 5〇 and 5〇 reaches the second polarizer 60# 60, 胄, and can penetrate the vertical alignment liquid crystal coatings 40 and 40' (see FIG. 5). ). 5, as shown in Figs. 1 to 5, the slow axes 31 of the adjacent patterns of the phase retardation film 30 are substantially perpendicular to each other. The slow axes 51 and 51 of the left and right λ/4 phase difference layers 50 and 50' have 45 for the transmission axes 61 and 61 of the second polarizers 60 and 60, respectively. And an angle of _45°. Further, the transmission axis 21 of the first polarizer 20 is perpendicular to the transmission axes 61 and 61 of the second polarizers 60 and 60'. In the present invention, the coating of the liquid crystal 10 perpendicular to the surface of the coating is referred to as a "vertical alignment liquid crystal coating." The vertical alignment liquid crystal coating imparts light that is phase difference to the phase retardation film passing through the image display unit to convert light that has not been converted into linearly polarized light into linearly polarized light. The liquid crystal layer is supplied by the phase retardation film to the elliptically polarized light which oscillates in the oblique direction, thus making the phase of the light close to the polarization state of the circularly polarized light. The circularly polarized light incident on the front surface of the λ/4 phase difference layer of the polarization glasses unit is converted into linearly polarized light ', and the light incident on the inclined side is converted into elliptically polarized light' thus causing crosstalk. The vertical alignment liquid crystal coating can be placed in the front or rear position. The light passing through the image display unit penetrates the χ/4 phase difference layer there, and the phase of the incident light on the oblique side is changed by 20, thereby reducing the occurrence of crosstalk and ensuring a wide range of viewing angles. . The optical properties of the vertical alignment liquid crystal coating for all wavelengths in the visible range can be defined by the following Equations 1 to 3. Unless the wavelength of the source is specified, this optical property usually indicates

PIIIDRA007TW 7 201213863 Easy to identify at 589nm. In the following equation, 'Nx is the highest refractive index 'Ny of light oscillating in the coplanar direction is the refractive index of light oscillating in the coplanar direction and perpendicular to Nx, and Nz is the refractive index of light oscillating in the thickness direction. Equation 1

Rth = [(Nx + Ny) / 2 - Nz] χ d (where Nx and Ny are the refractive indices of light oscillating in the coplanar direction and Nx = Ny 'd is the film thickness). Equation 2 RO = (Nx - Ny) x d (where Nx and Ny are the refractive indices of light oscillating in the coplanar direction of the film and Nx = Ny, and d is the film thickness). Equation 3 NZ = (Nx - Nz) / (Nx - Ny) = Rth / RO + 0.5 degrees). (where Nx and Ny are the refractive indices of the light oscillating in the coplanar direction and Nx=Ny'Nz is the refractive index of the light oscillating in the film thickness direction, and d is the thickness delay ’ indicates the average fold relative to the coplanar direction

The delay of birth. ΝΖ represents the refractive index ratio. Here, Rth is the thickness retardation, the refractive index difference in the thickness direction of the reflectance, and RO is the coplanar delay, which can be #力艏

The degree of extension of the Mil horse is 35 to 16 〇 nm, and 55 to 140 nm is more preferable.

PM!DRA007TW 201213863 The coplanar delay R is closer to Onm, the more effective the liquid crystal layer. However, considering the process error ', a coplanar delay r 不 of not more than 1 〇 nrn can also be applied. The thickness delay Rth can be obtained by trial error. A liquid crystal coating composition can be applied to form a vertical alignment liquid crystal coating. 5 Such a liquid crystal coating composition is optically isotropic and may include a liquid crystal compound having photocrosslinkable shell. An example of such a liquid crystal compound is a reactive type crystal unit (RM). RM may contain special materials known in informati〇n Display v〇1 1〇,^ ("Recent research trends on RM"). Such RM represents a monomer molecule having a liquid crystal phase, and contains an end group which can be polymerized with the crystal 1 表现 to express a liquid crystal. RM polymerization can produce a crosslinked polymer network while maintaining liquid crystal alignment. Compared to using a liquid crystal polymer having the same structure as RM, when the cooling RM molecule is lower than the phase transition point, a relatively low viscosity at the liquid crystal phase can be obtained. A large area with enhanced alignment. The liquid crystal phase cross-linked network film having the above-mentioned large area may have a solid film form, thereby exhibiting thermal or mechanical stability while maintaining optical anisotropy or dielectric properties (dielectric coefficient) of the liquid crystal. In order to ensure uniform coating and coating process efficiency, the liquid crystal coating component can be diluted in a solvent and then used to dissolve the liquid crystal compound to make it uniform. ', 2 〇 1 such as 'solvent of the reactive liquid crystal compound may be a mixed solvent' containing at least - or more than propylene glycol methyl acetate (pgmea), methyl ethyl ketone (MEK), dimethyl hydrazine , two reserve fields a nail, two methane, thus preparing liquid crystal coating components. In this respect, the reactive liquid crystal compound content of the liquid crystal coating component

PI11DRA007TW 201213863 can be 15 to 30 wt.%. If it is late. If the other side is less than 15 Wt.%, it does not produce a retardation. Although the content exceeds 3 〇 i〇/ni, it is difficult to form U # · ° ', and it is difficult to form a uniform liquid crystal coating by reactive liquid crystal compounding. The coating method i used herein, coating, spin coating, coating H red transfer, 叮p cloth, gravure coating, etc., according to the coating process, determines the type and/or amount of solvent. The liquid crystal coating may be 〇〇1 to 1 〇 thick after drying. The solvent can be evaporated via drying. 10 Drying can be carried out using a hot air dryer or a far infrared dryer ‘are not particularly limited. The drying temperature can be from 3 〇 to 1 〇 『c, 5... is better. The drying time can be from 30 to 6 seconds, preferably from 12 to _ seconds. Furthermore, drying can be carried out at the same temperature or gradually increasing the temperature. After drying, photocrosslinking produces a vertical alignment liquid crystal coating. Light is not particularly limited, but may include ultraviolet rays. The image display unit may include a first polarizer and a phase retardation film to convert light passing through the first polarizer into circularly polarized light. The first polarizer used herein may be generally used, and is not particularly limited as long as it can be polarized. "In detail, a stretched polyvinyl alcohol film containing a dichroic compound, a wire grid, a carbon nanotube, or the like can be used. . The stretched polarizer in which the film is easily processed into a film form may include a stretched PVA film to adsorb and align with a dichroic dye. The resin used for the polarizer can be prepared by saponification of a polyvinyl acetate resin. The polyvinyl acetate resin may comprise, as a vinyl acetate homopolymer, a polyethylene acetate vinegar, a vinyl acetate vinegar, and any other monomer copolymerizable therewith, a copolymer of PI 11DRA007TW 10 201213863, and the like. It can be copolymerized with vinyl acetate to avoid at least a whitening and unsaturated carboxylic acid monomer; an unsaturated sulfonic acid monomer; an olefin., an acrylamide monomer having an ammonium group. In addition, polyvinyl ester precursors, resins, for example, such as polyethylenic (A) poly-resin can be modified to modify the resin 1 vinyl alcohol resin saponification degree acetal aldehyde, 5 small thrips 85 to 100 mol% is preferably at least 98 mol%. The polyvinyl alcohol resin is polymerized to 10,000, 1, 5 Torr to 5,000. Further, 0 ', '1,000 polarizers may be provided with a transparent protective film on at least one side. 10 15 20 The transparent protective film can be a film having excellent transparency, mechanical strength, rail stability, water repellency, and omnidirectionality. In particular, the transparent protective film may be selected from rail plastic resins, such as polyester resin, #polyethylene terephthalate, polyethylene isophthalate, $ethylene phthalate, polybutene, and benzene. Formic acid vinegar; cellulose resin such as cellulose diacetate and cellulose triacetate; polycarbonate resin; acrylic resin, such as polymethyl methacrylate and polyethyl acrylate, stupid vinyl resin, such as poly Stupid ethylene and acrylonitrile. styrene copolymer; polyolefin resin, such as polyethylene, polypropylene, polycarbonate with ring or norbornene thin structure; olefin resin, such as ethylene-propylene polymer; gas Vinyl resin; polyamidamine resin, such as nylon and aromatic polyamidamine; melamine resin; polyether sulfone resin; oxime resin; polyether oxime resin; polyphenylene sulfide resin; vinyl alcohol resin; ; vinyl butyral resin; allylated resin; polyacetal resin; epoxy resin, film can also be composed of a mixture of thermoplastic resins. "In addition, the film can use methyl acrylate, polyurethane, epoxy, hydrazine Resin thermosetting resin or UV curing resin To form. The transparent protective film has a thermoplastic resin content of 5 〇 to 1 〇〇 wt%, 50

PI11DRA007TW 11 201213863 is preferably 99% by weight, more preferably 60 to 98 wt%/〇, and most preferably 70 to 97% by weight. When the content is less than 50% by weight, the unique high transmittance of the thermoplastic resin cannot be sufficiently achieved. Such a transparent protective film may further contain at least one additive. Examples of the additive 5 may include a UV absorber, an antioxidant, a lubricant, a plasticizer, a mold release agent, an antifouling agent, a flame retardant, a nucleating agent, an antistatic agent, a pigment, a coloring agent, and the like. The phase retardation film may be composed of a phase difference layer having two or more separation regions different in phase or slow axis direction from each other. The present invention can be applied to any conventional phase retardation film configuration, for example, a film type phase retardation film, a phase retardation film without an alignment film, and the like, and is not particularly limited thereto. For example, in the present invention, a substrate film, an alignment film provided on the substrate film, and a phase retardation film in which a liquid coating layer is formed on the alignment film can be used. 5 The characteristics and/or type of the substrate 可 may be substantially the same as those of the above transparent protective film. The substrate film thickness may be 5 to 100 / Λ n, preferably 15 to 60 qing. If the thickness is less than 5, the mechanical strength is reduced. When the thickness exceeds 1 〇〇, it is difficult to reduce the thickness of the polarizer. The alignment film on the substrate film can be any conventionally used, and is not particularly limited, however, the organic alignment film is preferred. The organic alignment film may be an acrylate or polyarylene-based alignment film set or an alignment film component having 3 poly-proline. The polyamic acid is a polymer obtained by reacting a diamine with two needles, and the polyamine is imidized by poly-aracine, and the structure thereof is not particularly limited.

PIIIDRA007TW 12 201213863 The alignment film component should be of the appropriate viscosity of the eucalyptus & Λ # $. If the viscosity is too high, the components are not easily ventilated under pressure, and the enthalpy, enthalpy is difficult to form an alignment film of uniform thickness. When the viscosity is too low, even if the right self-red station J3 liL, ^ has good spreadability, it is difficult to control the thickness of the alignment film. Thus, the viscosity can be 8 to 13 cP. The surface tension, solid content and/or volatility of the solvent may be appropriately considered. Yang Luzhi's thickness and vulcanization properties of the alignment film can be considered and controlled at the same time due to the solid content of the iron ore. If the solid content is too high, the thickness of the alignment film increases. On the other hand, when the 10 15 20 solid 3 is too low, the content of the mixture is high, causing the problem of becoming dirty after drying the solution. Thus, the solid content can be 〇lt〇1〇 wt %. The alignment film set knife can be formed by a phase of a solution containing a polyamidamide or a polyamido acid-based solid powder in a solvent. The solvent is not particularly limited as long as it can dissolve the solid powder, and may contain f @^J匕3, ethyl chlorpyrifos, γ-butyrolactone, N-methyl-2-pyrrolidone, dipropylene glycol monomethyl ether and the like. In view of solubility, viscosity and/or surface tension, such a solvent may be a mixture of at least two materials to form a uniform alignment film. In addition to the foregoing, the alignment film component may further comprise a crosslinking agent, a coupling agent or the like. The alignment film can be formed by applying an alignment film component to one side of the polymer substrate film. The alignment film component coating used herein can be any conventional method, and is particularly limited. For example, the alignment film component can be applied directly by a suitable dispersion method such as fluid coating, dispersion coating using an air knife, gravure, back rolling, anastomotic rolling, spraying or cutting, and the like.

PH1DRA007TW 13 201213863 To further improve the coating efficiency of the alignment film component, it can be further dried. The drying process used herein is not particularly limited and can be carried out using a hot air dryer or an ultraviolet heater. In this regard, the drying temperature can be from loot, 50 to 80. (: Preferably, the drying time may be 30 to 6 〇〇 5 seconds '120 to 600 seconds is preferred. Thereafter the 'alignment' can be provided to the formed alignment film. This alignment can be achieved by rubbing, light alignment, etc. For example, after the alignment film formed by imparting the entire alignment, the treated film can be exposed using a photomask to produce an alignment film having different alignment directions. The first film having a light transmitting portion and a light shielding portion is provided. After the photomask is disposed on the alignment film and the processed film is subjected to the first exposure, the second photomask having the light shielding portion and the light transmission portion opposite to the first photomask is disposed on the exposed film, and then the second film is implemented. Exposure. As a result, an alignment film having different optical axes can be obtained. Light for exposure is not particularly limited, and exposure can be performed by polarized UV irradiation, 15 ion beam or plasma beam irradiation, radiation, etc. It is best to use polarized UV irradiation. The alignment film obtained after the above-mentioned alignment may be provided with a liquid crystal coating. The liquid crystal coating layer may be obtained by coating a liquid crystal coating component on an alignment film to form a phase retardation film. The liquid crystal coating component and the liquid crystal coating layer are formed. With The image display unit of the present invention may further comprise a surface treatment layer such as a hard coat layer, an anti-reflective layer or an anti-adhesion layer, a diffusion layer, an anti-flash layer, etc., without departing from each other. The scope of the invention. In addition to the first polarizer and the phase retarder, the image display unit can be further

PIIIDRA007TW 201213863 - The step contains additional configurations for generating stereo images. Examples of such a configuration may include a backlight, a bottom polarizer, a liquid crystal panel, a top polarizer, and a phase retardation film. The polarized glasses unit may include a λ/4 phase difference layer that converts light passing through the image display unit into linearly polarized light. A second polarizer that transmits light from the λ/4 phase difference layer. The λ/4 phase difference layer extends the phase of the incident light (having λ) by a quarter wavelength, and converts the circularly polarized light incident on the polarized glasses into linearly polarized light. The λ/4 phase difference layer may be a λ/4 liquid crystal coating layer formed by a liquid crystal coating or a λ/4 phase difference film formed by stretching the film 10. The λ/4 liquid crystal coating can be formed using a liquid crystal coating composition. The liquid crystal coating composition and the liquid crystal coating layer are formed substantially the same as the above vertical alignment liquid 35 coating. The λ/4 liquid crystal coating layer of the present invention can directly apply the RM-containing liquid crystal coating 15 component to the first polarizer. And made. The liquid crystal coating layer 14 can also be formed by adhering a transparent protective film to the first polarizer via a (4) known adhesive, and directly applying the liquid crystal coating component containing (10) to the transparent protective film. The liquid crystal coating layer can be formed by applying a liquid crystal coating composition containing RM to the substrate 20' and then irradiating the polarized UV, polarized electromagnetic waves and the like to the coated substrate and curing. The λ layer is preferably produced as follows: a film is prepared via a solution film forming method or an extrusion molding method, and then the prepared film is stretched. Stretching can include: longitudinal stretching in the direction of mechanical flow (machine direction, MD); perpendicular to

PH1DRA007TW 201213863 The transverse direction of the direction of mechanical flow (lateral, TD) (for example, tensile stretching); the biaxial alignment of simultaneous stretching in MD and TD. In particular, it is best to use a stretch stretch film. The slow axis of the left and right λ/4 phase difference layers is 45 for the polarizer transmission axis. And 5 _45. Angle. The constituent elements of the second polarizer and the preparation method thereof are substantially the same as the first polarizer, and the transmission axis of the first polarizer may be perpendicular to the transmission axis of the second polarizer. The light from the polarization state of the Bangka ball may be confirmed to be incident on the polarized glasses. The circularly polarized light of a single unit is converted into linearly polarized light. In this respect, the point S3 (1, 〇, 〇, υ on the state ball according to the present invention represents right circularly polarized light, and when the liquid crystal display is viewed on the front side, the reference of 0 and f is defined as the angle β in the f direction. Rotate the plane around the axis (in the direction of f+90) to the side of the sine. Here, the partial vibration of the light from the front side is shown on the Bangka ball. 6' at 0 = 45. On the ball in different directions of f=60〇(6a), f=15()O(6b), f=270〇(6c), f=350〇(6d) respectively The optical path can be defined as a point passing through the first polarizer, a point 2 passing through the phase retardation film, a point 3 passing through the vertical alignment liquid crystal coating, and a point 4 passing through the human/4 phase difference layer 2 . In this case, the closer the point 4 is to the equator line, the more linearly polarized light is present. Hereinafter, the preferred embodiment will be described with reference to examples and comparative examples to better understand the present invention. However, those skilled in the art will recognize that such an embodiment is known. It is just a description of the use of 'can make various modifications and changes without departing from the scope of the patent application.

p, | IDRA 〇〇 7TW 8 201213863 - The scope and spirit of the present invention, such modifications and variations are encompassed by the invention as defined by the scope of the patent application. Example 1 As shown in Fig. 3, a stereo image system including an image display unit and a polarized glasses unit is manufactured. The image display unit is combined with a polarizing plate and a top plate. The polarizing plate comprises a cellulose triacetate (TAC) protective film, a pvA polarizer, and a phase retardation film, which are sequentially stacked on the liquid crystal cell having a vertical alignment mode. A further polarizing plate comprising a TAC protective film, a PVA polarizer, and another ___ TAC film laminated on another liquid cell is combined with the lower plate. Assuming that the direction of the sinusoidal surface relative to the right horizontal direction is positive (+) direction, the slow axis of the adjacent pattern of the phase retardation film is designed to be +45, respectively. And _45〇. The polarized glasses unit is sequentially stacked with a vertical alignment liquid crystal coating, a λ/4 phase difference of 15 layers, and a PVA polarizer. The vertical alignment liquid crystal coating on the left and right sides of the polarized glasses unit has a coplanar retardation scale of 〇nm and a thickness retardation Rth of Μ, parallel to the transmission axis of the adjacent polarizer. The slow axis of the λ/4 phase difference layer is 45 for the transmission axis of the polarizer. And -45. . Figures 6a to 6d show at 0 = 45. For example, f = 6 〇〇 (6a), 2 〇 〇 15 〇. _, f = 270 〇 (6c), Bu. From time to time, the state of polarization of the three-dimensional imaging system on the ball is added to the state. Referring to Figures 6a to 6d, the polarization states are respectively indicated as a point after passing through the first polarizer, a point after passing through the phase retardation film, a point 3 passing through the vertical alignment liquid crystal coating, and a point passing through the /4 phase difference layer. 4. From the observation, it is confirmed that point 4 is close to the equator line.

PI1IDRA007TW 17 201213863 is more linearly polarized. As mentioned above, the closer the point 4 is to the equator line example 2, the same procedure as in the first embodiment is repeated to manufacture the stereoscopic image system, except that the image is not early combined with the polarizing plate spot, and the god is extremely popular on the plate, the polarizing plate It includes TAC protective film stacked in sequence, PVA value Η·* rt·«, skin-care r VA polarizer, vertical alignment liquid crystal coating, and phase retardation film. The polarization state of the manufactured stereoscopic image system is shown on the Bangka ball. Although the optical path is different from that of the example 1, the position 10 of the point 4 after passing through the λ/4 phase difference layer is substantially the same as that of Figs. 6a to 6d. Example 3 The same procedure as in Example 1 was repeated to fabricate a stereoscopic image system, except that the image display unit was combined with a polarizing plate and an upper plate, and the polarizing plate comprises a TAC film, a PVA polarizer, and a phase retardation film stacked in sequence. Vertical alignment liquid crystal coating, as shown in Figure 2. The polarization state of the manufactured stereoscopic image system is shown on the Bangka ball. Although the optical path is different from that of the example 1', the position of the point 4 after passing through the λ/4 phase difference layer is substantially the same as that of Fig. 6a. 20 Example 4 The same procedure as in Example 1 was repeated to manufacture a stereoscopic image system, except that the image display unit 70 was combined with a polarizing plate and an upper plate, and a polarizing glasses unit was used. The polarizing plate contained a TAC protective film, PVA stacked in sequence. Polarizer, PIIIDRA007TW 18 201213863 Phase retardation film, vertical alignment liquid crystal coating, polarized glasses unit consists of sequentially stacked vertical alignment liquid crystal coating, λ/4 phase difference layer, PVA polarizer, as shown in Fig. 4. The polarization state of the stereoscopic shirt system is shown on the Bangka ball. Although the optical path is different from that of the example 1, the position of the point 4 after passing through the λ/4 phase difference layer is substantially the same as that of Figs. 6a to 6d. Example 5 The same procedure as in Example 1 was repeated to fabricate a stereoscopic image system, except that a polarized glasses unit was used, including a sequentially stacked λ/4 phase difference layer, a vertical alignment liquid crystal coating, and a PVA polarizer, as shown in Fig. 5. The polarization state of the manufactured stereoscopic image system is shown on the Bangka ball. Although the optical path is different from that of the example 1', the position of the point 4 after passing through the λ/4 phase difference layer is substantially the same as that of Figs. 6a to 6d. 15 Example 6 The same procedure as in Example 1 was repeated to fabricate a stereoscopic image system, except that the coplanar retardation R 垂直 of the vertical alignment liquid crystal coating was 2 nm, and the thickness retardation Rth was 57.5 nm. 20 Figures 7a and 7b show at θ = 45. The polarization states above the stereo image system on the ball in different directions such as f = l5〇〇 (7 hearts and f=350〇(7b). From the observation results, it is found that point 4 is closer to the equator line, so The light becomes substantially linearly polarized. PIHDRA007TW 19 201213863 Example 7 The same procedure as in Example 1 was repeated to fabricate a stereoscopic image system except that the coplanar retardation RO of the vertical alignment liquid crystal coating was 5 nm, and the thickness retardation Rth was 1 37.5 nm. Figures 8a and 8b show the polarization states above the 立体-45. The stereoscopic image system on the ball in different directions such as £=1500 (84 and f = 350o (8b) respectively. From the observation result 'Discovery point 4 Closer to the equator line, therefore, the light becomes substantially linearly polarized. 10 Example 8 Repeat the same procedure as in Example 1 to fabricate a stereo image system, except that the coplanar retardation R〇 of the vertical alignment liquid crystal coating is 〇nm, thickness delay Rth Figure 15a and Figure 9a show the polarization above the stereo image system on the ball in different directions, such as f = 15〇0 (9a) and 15 f = 350 (91), respectively. State. From the observation, the hair Point 4 is closer to the equator line, and therefore, the light becomes substantially linearly polarized light. Comparative Example 1 A stereoscopic image system was manufactured according to the same procedure of Example 1, except that the vertical alignment liquid crystal coating was omitted. Figs. 10a to 10d show θ =:45. On the ball in different directions such as ?=6〇.(1〇&), f=150o(10b), f=27〇°(10c), f=35〇0(1〇d) Polarization state above the stereo image system. Refer to Figure i〇a to 丄(10)

PI11DRA007TW 201213863, the polarization states are respectively indicated by the point after passing through the first polarizer, the point 2 after passing through the phase retardation film, and the point 3 after passing through the λ/4 phase difference layer. From the results of the observations of Fig. 1 & to i〇d, it is found that point 3 is far from the equator line as compared with point 4 of Figs. 6a to 6d. In this case, it can be seen that the closer to the equator line, the more linearly polarized the light is. Comparative Example 2 A stereoscopic image system was fabricated according to the same procedure of Example 1, except that the coplanar retardation R 垂 of the vertically aligned liquid crystal coating was 〇 nm, and the thickness retardation ruler was 10 17.5 nm °. Figs. 11a and 11b show θ = 45. The polarization state above the stereo image system on the ball in different directions, such as f = 15〇〇(iia) and ask...(10). From the observation, it can be seen that the point 4 is far from the equator line, and therefore, the light is not converted into linearly polarized light. Comparative Example 3 A stereoscopic image system was fabricated according to the same procedure of Example 1, except that the coplanar retardation rule of the vertical alignment liquid crystal coating was 〇nm, and the thickness retardation ruler was 227.5 nm ° 20. Figures 12a and 12b show θ = 45. . The polarization state of ^ on a stereo image system such as f = i f = 350Q (12b) < different directions of the ball. From the observation, it can be seen that the point 4 is far from the equator line, and therefore, the light is not converted into linearly polarized light. Although the invention has been described with reference to the preferred embodiments, those skilled in the art are familiar

PII1DRA007TW 21 201213863 It is to be understood that various modifications and changes can be made without departing from the scope of the invention as defined by the scope of the claims. BRIEF DESCRIPTION OF THE DRAWINGS Figures 1 to 5 are schematic representations of @, showing the construction of various stereoscopic systems in accordance with the present invention; 'Figures 6a to 6d are shown in 〇=45〇公丨丨大& The polarization state of the inventive example 1 on a state ball of different directions such as f=6〇0(6a) 'f=15〇〇(6b), f=27"6c), f=35〇0(6d) 10 15 20 Figures 7a and 7b show that in &丨+ &, you ϋ 45 is not in the different directions such as f = 15〇0(7a) and f=350o(7b) The polarization state of Example 6 of the present invention; Figs. 8a and 8b show that θ = 45 〇 / > 丨 y · 4 r W is not in the case of f = 15 〇〇 (8a) and f = 350 ° (8b) In different directions, Λ如Λ ^, + 10,000-gate state on the ball, the polarization state of the inventive example 7, Figure 9a and 9b shows that at 0 = 45 〇 eight as calving, 45 knives in such as f = 15 〇 0 ( 9昀 and f = 350o (9b) in different directions 夕细4 ι+, 匕. Π之邦加球 on the polarization state of the invention example 8; Figure 1 〇a to 1 〇d is shown in θ = 450 respectively λ ^私丄^ You σ W knife in the different directions such as f=60〇(10a), f=150〇(10b), f=27y(1〇W ϊ(l〇d) Comparing the polarization states of Example 1; Figures 11a and lib are shown at 〇 = 45. Eight forces are different in blocking such as f = 15 〇〇 (lla) and f = 350 ° (llb) & 々, ° State of the ball on the ball compared to the polarization state of Example 2; Figures 12a and 12b show at 0 = 45. Eight is /, Gan 0 W knife is in such as f = 15 〇〇 (12a) and

PIIIDRA007TW 8 22 25 201213863 f = 350° (12b) The polarization state of Comparative Example 3 on the ball in different directions. 5 [Description of main component symbols] 10. Liquid crystal panel 20: First polarizer 21: First polarizer transmission axis 3 0: Phase retardation film 10 31: Phase retardation film slow axis 40, 40', 4 1 : Vertical alignment liquid crystal Coatings 50 and 50': λ/4 phase difference layers 51 and 51': λ/4 phase difference layer slow axes 60 and 60': second polarizer 15 61 and 6 Γ: second polarizer transmission axis PI11DRA007TW 23

Claims (1)

201213863 VII. Patent application scope: 1. A stereoscopic image system, comprising: an image display unit that projects circularly polarized light, and a polarized glasses unit that respectively penetrates the stereoscopic image to the left and right eyes; 5 10 15 its t image display unit a phase retardation film comprising: a first light emitting sheet and a light that is converted into circularly polarized light by the first polarizer; wherein the polarized glasses unit comprises a λ/4 phase difference layer that converts the image into linearly polarized light, and a second polarizer that is projected from the light, showing the light λ/4 phase difference layer of the unit, wherein the light passing through the first polarizer penetrates the vertical alignment liquid crystal coating before the second polarizer reaches the liquid crystal perpendicular to the coating The coplanar retardation 'R〇' of the surface; and its vertical alignment liquid crystal coating is from 〇 to 10 - the thickness retardation 'Rth, from 35 to 16 〇 nm, comprising at least one layer. 2. The stereoscopic image system of claim i, wherein the vertical alignment liquid crystal coating has a thickness retardation Rth of 55 to 14 nm. 20. The stereoscopic image system of claim 1, wherein the light passing through the first polarizer layer 0 penetrates the vertical alignment liquid crystal before the phase retardation film is applied, as in the stereoscopic image system of claim 1 of the patent scope, The light passing through the phase retardation 穿透 passes through the vertical alignment liquid crystal coating P111DRA007TW 24 25 201213863 before the λ / 4 phase difference layer is reached, wherein the vertical alignment glasses unit, or both 5 · the stereoscopic image system of claim 4 The liquid crystal coating is included in the image display unit or polarization. 5 6. The stereoscopic image system of claim 1, wherein the light passing through the λ/4 phase difference layer penetrates the vertical alignment liquid crystal coating before reaching the second polarizer. 7. The stereoscopic image system of claim i, wherein the vertical alignment 1 液晶 liquid crystal coating comprises a reactive crystal element (RM). 8. The stereoscopic image of the first aspect of the patent application, wherein the slow axes of adjacent patterns of the phase retardation film are substantially perpendicular to each other. 15. The stereoscopic image system of claim i, wherein the second polarizer has a transparent protective film formed on one side. 20 25 PU1DRA007TW 25 30