JP3806284B2 - Method for manufacturing 3D video display - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing a 3D video display for displaying 3D video.
[0002]
[Prior art and problems to be solved by the invention]
Conventionally, for example, a 3D video apparatus as shown in USP 5,327,285 has been proposed. As shown in FIG. 1, this 3D video apparatus is obtained by laminating a film 52 in which right-eye video display parts a and left-eye video display parts b are alternately arranged on the surface of a liquid crystal member 51. When the predetermined image is displayed by controlling the light emission of the member 51, the right-eye image is displayed from the right-eye image display unit a, and the left-eye image is displayed from the left-eye image display unit b. . Then, the vibration direction of the polarized light constituting the right-eye image from the right-eye image display unit a is a polarized light having an angle of 90 ° with respect to the polarization vibration direction constituting the left-eye image from the left-eye display unit b. (For example, the x component of the right-eye video composed of two components x and y has a phase difference of 180 ° (π) with respect to the x component of the left-eye video composed of two components x and y in the same manner. When viewing the image with polarizing glasses comprising a right-eye lens with a polarizing plate that transmits only the right-eye image and a left-eye lens with a polarizing plate that transmits only the left-eye image, the observer sees the image You can think of stereoscopic images.
[0003]
By the way, the manufacturing method of the film 52 in which the right-eye video display part a and the left-eye video display part b are alternately arranged is a TAC film as disclosed in FIG. 2 of the above-mentioned USP 5,327,285. A polarizing film obtained by laminating an iodine-treated stretched PVA film and a photoresist is coated. After exposing a predetermined portion, the stretched PVA film is treated with a potassium hydroxide solution to straighten the vibration direction of light in a specific wavelength range. It is manufactured by a method of eliminating the property (phase difference function) that can rotate in the polarization state. However, this method is a very complicated manufacturing method because it must be exposed to light after being coated with a photoresist and further treated with a potassium hydroxide solution. US Pat. No. 5,327,285 discloses several methods for producing the film 52 by chemical treatment as described above, and methods for producing the film 52 by physical treatment, etc., both of which are similarly complicated. It is a simple manufacturing method.
[0004]
The present invention provides a method for producing a film including a right-eye video display unit a and a left-eye video display unit b that are extremely simple and excellent in mass productivity.
[0005]
[Means for Solving the Problems]
The gist of the present invention will be described with reference to the accompanying drawings.
[0006]
A method for manufacturing a 3D image display body for displaying a 3D image in which a right-eye image display unit a and a left-eye image display unit b are mixed, and is provided on a transparent support material 1 with an adhesive 2 interposed therebetween. After providing a stretched PVA film 7 having a phase difference function , and subsequently providing a transparent resist member 4 at a predetermined position of the stretched PVA film 7 , the peripheral surface is subjected to appropriate waterproofing treatment and heated at 80 ° C. to 100 ° C. By immersing in water within 5 seconds to 10 minutes, water is infiltrated into a portion where the resist member 4 does not exist, the phase difference function of the portion is lost, and the stretched PVA film 7 is formed, and the resist member 4 is present. and one of the portion and the portion where the resist member 4 is not present right eye image display unit a, the other is a left eye image display unit b, subsequently, the protective member 9 is provided after drying the Les resist member 4 side, then The liquid crystal surface on the protective member 9 Manufacturing of a 3D image display body characterized in that the member 5 is superposed or bonded so that the pitch of the liquid crystal cells of the liquid crystal display member 5 and the right-eye image display part a and the left-eye image display part b coincide with each other. It concerns the method.
[0007]
A method for manufacturing a 3D image display body for displaying a 3D image in which a right-eye image display unit a and a left-eye image display unit b are mixed, which is formed on a transparent support material 1 with an adhesive 2 interposed therebetween. as said T AC film 6 or CBA film stretched PVA film 7 and the laminated retardation film 3 was laminated with birefringence without TAC film 6 or C AB fill beam and the phase difference function is the adhesive 2 side Te to provided, followed by after forming a transparent resist member 4 at a predetermined position of the extending Shin PVA film 7, the 80 ° C. to 100 ° C. hot water subjected to appropriate waterproofing to the circumferential surface 5 seconds to 10 minutes Is immersed in water so that the portion where the resist member 4 does not exist is permeated with water so that the phase difference function of the portion disappears to form the stretched PVA film 7 where the resist member 4 is present and the resist member 4 are present. And one of parts not right-eye video display unit a, the other is a left eye image display unit b, subsequently, after drying the Les resist member 4 side a protective member 9, then the liquid crystal in the protective member 9 3. A 3D video display body characterized in that the display member 5 is superposed or bonded so that the pitch of the liquid crystal cells of the liquid crystal display member 5 and the right-eye video display part a and the left-eye video display part b coincide with each other. It relates to a manufacturing method.
[0008]
A method for manufacturing a 3D image display body for displaying a 3D image in which a right-eye image display unit a and a left-eye image display unit b are mixed, which is formed on a transparent support material 1 with an adhesive 2 interposed therebetween. as said T AC film 6 or CAB films stretched PVA film 7 and the laminated retardation film 3 was laminated with birefringence without TAC film 6 or C AB fill beam and the phase difference function is the adhesive 2 side Te to provided, followed by after forming a transparent resist member 4 at a predetermined position of the extending Shin PVA film 7, the 80 ° C. to 100 ° C. hot water subjected to appropriate waterproofing to the circumferential surface 5 seconds to 10 minutes Is immersed in water so that the portion where the resist member 4 does not exist is permeated with water so that the phase difference function of the portion disappears to form the stretched PVA film 7 where the resist member 4 is present and the resist member 4 are present. And then either partial right eye image display unit a, the other is a left eye image display unit b not followed by filling the appropriate member 8 between after drying the Les resist member 4 and the appropriate member 8 and A protective member 9 is provided on the resist member 4 side, and then the liquid crystal display member 5 is provided on the protective member 9 with the pitch of the liquid crystal cells of the liquid crystal display member 5 and the right-eye video display part a and the left-eye video display part b. The present invention relates to a method for manufacturing a 3D video display body, wherein the 3D video display body is superposed or bonded so as to match.
[0009]
Further, in the method for manufacturing a 3D image display body according to any one of claims 2 and 3, a 3D image characterized by employing a member having no birefringence as the appropriate member 8 and the protective member 9. The present invention relates to a method for manufacturing a display body.
[0010]
[Action and effect of the invention]
When the transparent resist member 4 is provided at a predetermined position on the stretched PVA film 7 and then immersed in hot water, water penetrates into a portion of the stretched PVA film 7 where the resist member 4 does not exist, and the portion is altered, Only the portion loses the property (phase difference function) that can rotate the vibration direction of light in a specific wavelength region while maintaining the linear polarization state, and the transmitted light is transmitted between the portion where the resist member 4 is present and the portion where the resist portion 4 is not present. A film whose phase is shifted by 180 ° is obtained.
[0011]
Therefore, a film in which the right-eye image display part a and the left-eye image display part b are mixed can be mass-produced only by an operation of immersing in hot water.
[0012]
Furthermore, since the protective member 9 is provided or an appropriate member 8 is filled between the resist members 4, the surface becomes flat, so that the diffusion of light is suppressed and the resolution and contrast are improved. Become.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 2 illustrates an embodiment of the present invention, which will be described in detail below.
[0014]
TAC film 6 (thickness: 126 μm) is placed on transparent support material 1 (for example, a glass plate having a thickness of about 2 mm, a cellulose acetate butyrate (CAB) plate, etc.) via adhesive 2 (for example, an ultraviolet curable resin). A laminated retardation film 3 obtained by laminating a uniaxially stretched PVA film 7 (thickness 38 μm) as a retardation film (half-wave plate) having a retardation function is provided, and an ultraviolet curable resin is cured by ultraviolet rays. The support material 1 is most preferably a glass plate having no birefringence. Further, the laminated retardation film 3 may be one obtained by laminating the TAC film 6 on the stretched PVA film 7, or may be one obtained by laminating the CAB film on the stretched PVA film 7, and the stretched PVA film 7 does not have birefringence. Any laminated film may be employed as the laminated retardation film 3.
[0015]
Subsequently, a resist ink (for example, urethane resin adhesive) having high transparency and high water resistance as the resist member 4 and having high adhesion is applied to a predetermined position of the uniaxially stretched PVA film 7 by screen printing. The resist ink in this case is a 160 μm-wide linear body applied from one side to the other side on the surface of the stretched PVA film 7, and the linear bodies are arranged in parallel at a pitch of 160 μm. .
[0016]
Note that the resist inks do not have to have the same width and the same pitch as described above, and may be arranged in a staggered pattern in a square shape in plan view, for example, instead of a linear body.
[0017]
Subsequently, this is immersed in hot water of 80 ° C. for about 30 seconds (of course, the peripheral surface is subjected to appropriate waterproofing treatment), and the stretched PVA film 7 is made to permeate water into a portion where the resist ink does not exist. The direction before the stretching is destroyed, that is, the phase difference function inherent to the stretched PVA film 7 is lost, and the portion where the resist ink exists is, for example, a right-eye image display portion a. A portion where no is present is defined as a left-eye video display portion b. As a result of various experiments, it has been confirmed that the properties of the stretched PVA film 7 disappear in the same manner when immersed in hot water at 80 ° C. to 100 ° C. for 5 seconds to 10 minutes.
[0018]
Subsequently, a UV resin, a PVA adhesive, an acrylic adhesive, or the like is filled as an appropriate member 8 on the stretched PVA film 7 between the resist inks, and a TAC or CAB sheet as the protective member 9 is laminated. The appropriate member 8 and protective member 9 may be any members as long as they do not have birefringence so as not to cause a phase change.
[0019]
Subsequently, the display member 5 in which liquid crystal is provided is overlapped with a magnet or the like or bonded with an appropriate adhesive to form a 3D video display body.
[0020]
The positions where the resist ink is applied, that is, the positions of the right-eye video display part a and the left-eye video display part b are set so as to match the pitch of the liquid crystal cells of the display member 5 to be bonded.
[0021]
With the above manufacturing method, a film in which the right-eye video display part a and the left-eye video display part b are arranged side by side can be easily obtained, and thus a 3D video display body can be easily obtained.
[0022]
Furthermore, since the protective member 9 is provided and an appropriate member 8 is filled between the resist members 4 and the surface becomes flat, the diffusion of light is suppressed accordingly, and the resolution and contrast are improved.
[0023]
Specifically, when a general wet heat test (condition: 40 ° C. × 95% RH) was performed on a member obtained by laminating a support material, a UV adhesive, a TAC film, and a PVA film in this order, the support member and the UV adhesive were bonded. Peeling occurred within 24 hours at the interface with the adhesive, the interface between the UV adhesive and the TAC film, and the interface between the TAC film and the PVA film. In this example, peeling occurred under the above conditions. It has been confirmed that there is no appearance abnormality such as peeling even within the time.
[0024]
In the above production, if each member is formed in a roll shape, continuous production becomes possible, and mass productivity of the 3D image display body is further improved.
[0025]
The right-eye lens with a polarizing plate that transmits only the right-eye image from the right-eye image display unit a and the left-eye image from the left-eye image display unit b (right-eye image) When viewing with polarized glasses consisting of a left-eye lens with a polarizing plate that transmits only the light that oscillates in a direction orthogonal to the direction of 90 ° with respect to the vibration direction of the light constituting the image, the observer views the image as a three-dimensional image. You can get the idea.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a conventional 3D video apparatus.
FIG. 2 is a configuration explanatory diagram of the present embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Support material 2 Adhesive 3 Laminated phase difference film 4 Resist member 5 Display member 6 TAC film 7 Stretched PVA film 8 Appropriate member 9 Protective member a Right-eye video display part b Left-eye video display part

Claims (4)

A method for manufacturing a 3D image display body for displaying a 3D image in which a right-eye image display unit and a left-eye image display unit are mixed, and having a phase difference function via an adhesive on a transparent support material After providing a stretched PVA film and subsequently providing a transparent resist member at a predetermined position of the stretched PVA film , the peripheral surface is subjected to appropriate waterproofing treatment and heated in hot water at 80 ° C. to 100 ° C. for 5 seconds to 10 minutes. Of the resist member, so that water is infiltrated into the portion where the resist member does not exist, the phase difference function of the portion disappears, and a stretched PVA film is formed and either the portion where the resist member exists or the portion where the resist member does not exist right eye image display unit one or to the other of the left-eye image display unit, subsequently, after drying the LES resist member side a protective member, then the liquid crystal of the liquid crystal display element of the liquid crystal display member on the protective member cell Method for producing a 3D image display body, wherein a pitch between the right eye image display unit and the left-eye image display unit combining overlapping or paste to match. A method of manufacturing a 3D image display body for displaying a 3D image in which a right-eye image display unit and a left-eye image display unit are mixed, and has no birefringence via an adhesive on a transparent support material provided a stretched PVA film and laminated retardation film was laminated with a TAC fill beam or C AB fill beam and the phase difference function such that the T AC fill beam or CBA film becomes adhesive side, followed by the extension Shin After providing a transparent resist member at a predetermined position of the PVA film, the peripheral surface is subjected to appropriate waterproofing treatment and immersed in hot water at 80 ° C. to 100 ° C. within 5 seconds to 10 minutes, thereby the presence of the resist member Water is infiltrated into the unexposed portion to eliminate the phase difference function of the portion, and the stretched PVA film is used for the right-eye projection of either the portion where the resist member is present or the portion where the resist member is not present. Display unit, and the other a left-eye image display unit, subsequently, a protective member is provided after drying the LES resist member side, then the liquid crystal display element and the pitch of the liquid crystal cells of the liquid crystal display member on the protective member right A method for producing a 3D image display body, wherein the image display portion for image and the image display portion for left eye are overlapped or bonded so as to match. A method of manufacturing a 3D image display body for displaying a 3D image in which a right-eye image display unit and a left-eye image display unit are mixed, and has no birefringence via an adhesive on a transparent support material provided a stretched PVA film and laminated retardation film was laminated with a TAC fill beam or C AB fill beam and the phase difference function such that the T AC fill beam or CAB film becomes adhesive side, followed by the extension Shin After providing a transparent resist member at a predetermined position of the PVA film, the peripheral surface is subjected to appropriate waterproofing treatment and immersed in hot water at 80 ° C. to 100 ° C. within 5 seconds to 10 minutes, thereby the presence of the resist member Water is infiltrated into the unexposed portion to eliminate the phase difference function of the portion, and the stretched PVA film is used for the right-eye projection of either the portion where the resist member is present or the portion where the resist member is not present. Display unit and the other a left eye image display unit, followed by filling the appropriate member between after drying the LES resist member and provided with the appropriate members and resist member side in the protective member, then, to the protective member A method for producing a 3D video display body, wherein a liquid crystal display member is superposed or bonded so that a pitch of liquid crystal cells of the liquid crystal display member matches the right-eye video display unit and the left-eye video display unit.   4. The method for manufacturing a 3D video display according to claim 2, wherein a member having no birefringence is adopted as an appropriate member and a protective member. Method.

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