KR20120005973U - A stereo display polarizer and method for fabricating thereof - Google Patents

Abstract

The present invention discloses a kind of 3D stereoscopic display polarizer and a manufacturing method thereof, wherein the 3D stereoscopic display polarizer includes a release film, a raw polaroid (RAW) polaroid, and a stereoscopic display film, which are sequentially bonded, wherein the stereoscopic display film is the raw (RAW). ) Includes a retardation film bonded to a polaroid, in which the optical axis SLOW AXIS of the even-row retardation film of the retardation film and the projection optical axis of the RAW polaroid are 0 ° -50 ° array or 130 °. And the optical axis SLOW AXIS of the odd-row phase difference film of the retardation film is 130 ° to 180 ° angle or 0 ° to the projection optical axis of the RAW Floatite. Arranged at 50 °, the 3D stereoscopic display polarizer of the present invention converts the linearly polarized beam emitted from the TFT liquid crystal display into two sets of left and right independent circularly polarized light. The eyeglasses receive image rays of even-row and odd-row phase difference films emitted from the display device, respectively, and synthesize stereoscopic effects through parallax generated in the cerebral nerve central system.

Description

A kind of 3D stereoscopic display polarizer and its manufacturing method {A 3D STEREO DISPLAY POLARIZER AND METHOD FOR FABRICATING THEREOF}

The present invention relates to a region of a TFT type liquid crystal display polarizing plate, and more particularly, a type of TFT-LCD liquid crystal display panel has the effect of a 3D stereoscopic display, and is a two-dimensional (2D) to three-dimensional (3D) liquid crystal display panel. It relates to a 3D stereoscopic display polarizing plate to be converted to and a manufacturing method thereof.

The conventional TFT type liquid crystal display polarizing plate includes a release film, a RAW polaroid, a retardation film, an outer layer protective film, and the polarizing plate is bonded to the front side of the liquid crystal display panel, which generates only a kind of polarization characteristics, The general TFT type liquid crystal display device did not create a stereoscopic display effect.

The present invention is to solve the above-described problems, by providing a kind of 3D stereoscopic display polarizing plate, the purpose of the liquid crystal display panel to implement a stereoscopic display effect.

In order to achieve the above object, a kind of 3D stereoscopic display polarizer of the present invention includes a release film, a raw polaroid (RAW) polaroid, and a stereoscopic display film bonded in turn, and the stereoscopic display film is a phase difference film bonded to the raw polaroid (RAW) polaroid. This includes the optical axis SLOW AXIS of the even-row phase difference film of the retardation film and the projection optical axis of the RAW polaroid being arranged in an 0 ° -50 ° arrangement or 130 ° -180 °. The optical axis SLOW AXIS of the odd-row phase difference film of the retardation film is arranged at an angle of 130 ° to 180 ° or 0 ° to 50 ° with the projection optical axis of the RAW polaroid.

Preferably, the retardation film is a cycloolefin polymer (COP) film, polycarbonate (PC) film or triacetate cellulose (TAC) film.

Preferably, the in-plane retardation value of the retardation film is 80 nm to 150 nm.

Preferably, the optical transmittance of the RAW polaroid is greater than or equal to 42% and its polarization degree is greater than or equal to 99.95%.

Preferably, the thickness of the retardation film is 30um ~ 200um.

Preferably, the RAW polaroid includes a first protective film, a polyvinyl alcohol film and a second protective film, which are sequentially bonded, wherein the release film is bonded to the first protective film, and the retardation film is It is bonded to a 2nd protective film.

Preferably, the 3D stereoscopic display polarizer further includes an outer protective film bonded to the stereoscopic display film.

Preferably, the three-dimensional display film further comprises an anti-glare AG film, an anti-reflection AR film or a scratch-resistant HC film bonded to the outer surface of the retardation film.

Preferably, the AG value of the anti-glare AG film is 20% -40%, the AR value of the anti-reflective AR film is less than or equal to 1.0%, the HC value of the scratch-resistant HC film is greater than 2H same.

In addition, in order to achieve the above object, a method of manufacturing a kind of 3D stereoscopic display polarizer of the present invention comprises first bonding a layer of the release film to the inner surface and the outer surface of the raw (RAW) polaroid, and then laminating the following. Carry out the steps.

Step 1: After attaching the two layers of the release film, the RW polaroid, which is rolled up, is mounted on the first unwinding device in a relatively rotatable manner, and the rolled 3D display film is also relatively It is mounted to the second unwinding device in such a way that it can be rotated.

Step 2: spread the beginning of the release film bonded to the outer surface of the RAW polaroid, and also connect the beginning of the open release film to the shaft of the first winding device, the beginning of the stereoscopic display film Is bonded to the open position of the release film of the (RAW) polaroid through the adhesive on the outer surface of the (RAW) polaroid, to form the 3D stereoscopic display polarizing plate of claim 1. In addition, the 3D stereoscopic display polarizer, in which the release film and the stereoscopic display film are bonded to the inner surface and the outer surface, respectively, is connected to the shaft of the second winding device through at least one pair of bonding rollers.

Step 3: In the process of driving the first and second winding drive motor shafts of the first and second winding device, respectively, the release film is continuously bonded to the three-dimensional display film through at least one pair of the bonding rollers The outer surface of the RAW polaroid is bonded.

The effect of the present invention is that the 3D stereoscopic polarizer converts the linearly polarized beam emitted from the TFT liquid crystal display into two sets of left and right independent circularly polarized light, and people are respectively emitted from the display by circularly polarized glasses. It receives image rays of even-row and odd-row phase difference films, and then synthesizes a stereoscopic effect through parallax generated in the cerebral nerve central system. By attaching the 3D stereoscopic display polarizing plate of the present invention to the front side of the TFT liquid crystal display panel, the TFT liquid crystal display panel, which is a two-dimensional (2D) display method, can be converted into a three-dimensional (3D) display method, which is also a 3D tablet computer. It can be widely applied to consumer electronics such as 3D monitor, 3D notebook, 3D TV.

1A is an operation principle diagram of a 3D stereoscopic display polarizer of the present invention;
FIG. 1B is an enlarged view of the 3D stereoscopic display polarizer of FIG. 1A; FIG.
2 is a configuration diagram according to an embodiment of a 3D stereoscopic display polarizer of the present invention;
3 is a configuration diagram according to another embodiment of the 3D stereoscopic display polarizer of the present invention;
Figure 4 is a manufacturing process for bonding the 3D stereoscopic display polarizing plate of the present invention.

Hereinafter, the embodiment will be described in more detail with respect to the 3D stereoscopic display polarizer of the present invention in conjunction with the accompanying drawings.

As shown in FIG. 2, the 3D stereoscopic display polarizer A of FIG. 1A of the present invention includes a release film 1, a RAW polaroid 8, and a stereoscopic display film 9, which are sequentially bonded, The stereoscopic display film 9 includes a phase difference film 5 bonded to the raw polaroid 8. This is because the optical axis SLOW AXIS of the even-row retardation film 5 of the retardation film 5 and the projection optical axis of the RAW polaroid 8 are arranged in an 0 ° -50 ° arrangement or 130 ° -180 °. The optical axis SLOW AXIS of the odd-row phase difference film of the retardation film is 130 ° to 180 ° angle or 0 ° to 50 ° with the projection optical axis of the RAW floate 8. Is arranged.

1A and 1B, the 3D stereoscopic display polarizer A of the present invention is adhered to the front side of the liquid crystal display panel B so that the 3D stereoscopic display polarizer A is the back light D. The linearly polarized beams emitted by the linear polarizer C and the TFT liquid crystal display panel B are converted into two sets of independent circularly polarized states, and users are even-numbered in the left eye by the circularly polarized glasses E. It receives the image light of the left circularly polarized light emitted by the low phase retardation film, and the image light of the right circularly polarized light emitted by the odd low phase retardation film is received in the right eye. Accept. That is, an image synthesized using even-row and odd-row image parallax forms a 3D stereoscopic display image in people's cerebral central nervous system. Therefore, the TFT liquid crystal display panel, which is a two-dimensional (2D) display method, can be switched to a three-dimensional (3D) stereoscopic display method.

Commercially available RAW polaroids 8 generally include a first protective film 2, a polyvinyl alcohol film 3 and a second protective film 4.

As shown in FIG. 3, the stereoscopic display film 9 further includes a surface functional film 6 adhered to an outer surface of the retardation film 5, and the surface functional film 6 is an anti-glare AG. Film, antireflective AR film, or anti-scratch HC film. Preferable surface functional film 6 is an anti-glare AG film, of which the preferred anti-glare AG value is 20% to 40%.

The polyvinyl alcohol film 3 (PVA film) adsorbs dichroic substances such as iodine and dichroic dye, and then crosslinks, draws, and dries. The polyvinyl alcohol film is washed with water, which removes contaminants on the film surface, also washes off the anti-adhesion agent, and also causes the polyvinyl alcohol film to swell to prevent phenomena such as uneven dyeing. have. The polyvinyl alcohol film 3 is very weak after drawing, and in order to protect this polyvinyl alcohol film 3, a protective film must be compounded on both surfaces thereof. That is, the first protective film 2 and the second protective film 4 should be combined, and the material of the protective film should be provided with excellent transparency, mechanical strength, thermal stability, and moisture barrier property. In addition, a protective film having excellent properties such as isotropy should be provided, for example, a cellulose resin such as cellulose triacetate, polynorbornylene type, polycarbonate type, polystyrene type or acrylic acid type, and the like. Is a triacetic acid cellulose film (TAC film), Most preferably, it is a TAC film which saponified on the surface with alkali. In addition, the TAC film and the PVA film may be bonded through a water-soluble adhesive, preferably a polyvinyl alcohol adhesive.

The preferred individual transmittance of the RAW polaroid 8 is greater than or equal to 42%, the individual transmittance indicates an average transmittance between 400 and 780 nm, and the preferred polarization is 99.95% to 100%.

The in-plane retardation value Re of the retardation film 5 is preferably 80 nm to 150 nm, most preferably a quarter wave plate and Re = 125 nm. Among them, Re is a thin film in-plane retardation in the visible range, Re = (nx-ny) x d, nx is the refractive index of the film in the slow axis direction, ny is the refractive index of the film in the fast axis direction, d is the thickness of the film.

The retardation film 5 may be an optical thin film such as a polycarbonate (PC) film, a cycloolefin polymer (COP) film, or a cellulose triacetate (TAC) film. Since the retardation film of the present invention should be provided with excellent optical transparency, low reflectance, excellent mechanical strength, stability under wet heat conditions, moisture barrier property, and the like, a cycloolefin polymer (COP) film is preferable in this embodiment, and the thickness thereof is 30 Μm to 200 μm.

Bonding of the three-dimensional display film (A) and the (RAW) polaroid 8 can be used a conventionally known adhesives and binders. For example, it is a transparent binder, such as an acrylic acid type polymer, an organosilicon type polymer, polyester, a polyurethane, a polyether. Among them, in view of optical transparency, adhesion, weather resistance, and the like, acrylic acid binders are preferred.

As shown in FIG. 4, the bonding method first applies a double-sided binder to the raw polaroid 8 which is rolled up in a binder applicator, and at the same time the inner and outer surfaces of the raw polaroid 8. Each of the release films is bonded to each other, and among them, the release film 1 is bonded to the inner surface, and the release film 18 is bonded to the outer surface. Thereafter, the following bonding steps are carried out.

Step 1: The two layers of release film are mounted on the first unwinding device 11 of the precision position jointer in a manner that can be rotated in a relatively rotatable manner. The stereoscopic display film 9 is also mounted to the second unwinding device 14 of the precision position jointer in a relatively rotatable manner. The projection optical axis of the RAW polaroid 8 is well controlled, and the projection axes of the SLOW AXIS and RAW polaroids of the even-row phase difference film of the stereoscopic display film 9 are 0 °? 50 ° or 130 ° to 180 °, and the SLOW AXIS of the odd-row retardation film is 130 ° to 180 ° or 0 ° to 50 ° with the projection axis of the RAW Float Arrange.

Step 2: spread the beginning of the release film 18 bonded to the outer surface of the RAW polaroid, and also connect the beginning of the open release film 18 to the shaft of the first winding device 12, The 3D stereoscopic display polarizing plate A is formed by bonding the beginning of the stereoscopic display film 9 to the open position of the release film 18 through an adhesive on the outer surface of the raw polaroid 8. In addition, the 3D stereoscopic display polarizing plate A, in which the release film 1 and the stereoscopic display film 9 are bonded to the inner surface and the outer surface, respectively, is connected to the second winding device 13 by at least one pair of bonding rollers 15. Connected to the shaft.

Step 3: The first and second winding drive motors, respectively, in the process of rolling the shaft of the first winding device 12 and the shaft of the second winding device 13, respectively, the first unwinding device 11 and the second unwinding The winding device 14 gradually discharges the material. At the same time, the RAW polaroid 8 and the stereoscopic display film 9 are bonded together by at least one pair of bonding rollers 15 to form a 3D stereoscopic display polarizing plate A. That is, the three-dimensional display film 9 is bonded to the outer surface of the RAW polaroid 8 to which the release film 1 is continuously adhered by the at least one pair of bonding rollers 15.

In the present embodiment, the raw polaroid 8 to which two release films are bonded passes through the guide roller 16, and then the opened peeled film 18 is transported to the first winding device 12. The RAW polaroid with the release film 1 bonded to the inner surface is transported to the pair of bonding rollers 15. The bonded 3D stereoscopic display polarizer A is transported to the second winding device 13 via the guide roller 17.

Precision position joints are equipped with precision lateral ultrasonic detectors, infrared detectors, devices for correcting center deviations, devices for correcting lateral deviations, tension controllers and CCD cameras, which ensure the accuracy of the welding angle.

The outer protective film 7 may first be bonded to the three-dimensional display film 9, and then the bonding step may be performed. Alternatively, the film layer passed through the bonding step may be bonded to the outer protective film 7 by the precision position bonding machine.

The 3D stereoscopic display polarizer (A) of the present invention can be subjected to test analysis by the measuring device CS-200, the crosstalk value of the 3D stereoscopic display as an evaluation index, and the preferred cross of the 3D stereoscopic display polarizer of the present invention. The crosstalk value is less than or equal to 2.0%.

Example 1

Using the structure of FIG. 3, the material of the retardation film 5 is a polycarbonate (PC) film, and thickness is 30 micrometers-200 micrometers. The surface functional film 6 is an antireflection AR film, and the antireflection AR value is less than or equal to 1.0%.

A TAC film is compounded on both sides of the PVA film using a polyvinyl alcohol adhesive, and then a 3D stereoscopic display polarizer A is prepared according to the above bonding method.

Example 2

Using the structure of FIG. 3, the material of the retardation film 5 is a triacetate cellulose (TAC) film, and thickness is 30 micrometers-200 micrometers. The surface functional film 6 is an antireflection AR film, and the antireflection AR value is less than or equal to 1.0%. The method of manufacturing the 3D stereoscopic display polarizing plate A is the same as in Example 1.

Example 3

Using the structure of FIG. 3, the material of the retardation film 5 is a COP film and the thickness is 30 micrometers-200 micrometers. The surface functional film 6 is an antireflection AR film, and the antireflection AR value is less than or equal to 1.0%. The method of manufacturing the 3D stereoscopic display polarizing plate A is the same as in Example 1.

Example 4

Using the structure of FIG. 3, the material of the retardation film 5 is a polycarbonate (PC) film, and thickness is 30 micrometers-200 micrometers. The surface functional film 6 is an anti-glare AG film, and the anti-glare AG value is 20% to 40%. The method of manufacturing the 3D stereoscopic display polarizing plate A is the same as in Example 1.

Example 5

Using the structure of FIG. 3, the material of the retardation film 5 is a triacetate cellulose (TAC) film, and thickness is 30 micrometers-200 micrometers. The surface functional film 6 is an anti-glare AG film, and the anti-glare AG value is 20% to 40%. The method of manufacturing the 3D stereoscopic display polarizing plate A is the same as in Example 1.

Example 6

Using the structure of FIG. 3, the material of the retardation film 5 is a COP film and the thickness is 30 micrometers-200 micrometers. The surface functional film 6 is an anti-glare AG film, and the anti-glare AG value is 20% to 40%. The method of manufacturing the 3D stereoscopic display polarizing plate A is the same as in Example 1.

Example 7

Using the structure of FIG. 2, the three-dimensional display film 9 is the retardation film 5, The material of the said retardation film 5 is a COP film, and thickness is 30 micrometers-200 micrometers. The method of manufacturing the 3D stereoscopic display polarizing plate A is the same as in Example 1.

Test results of the above example using the CS-200 are shown in Table 1.

As described above, the crosstalk value of the retardation film 5 using the COP film is relatively low. In the retardation film 5 using the COP film, increasing the surface functional film 6 can lower the crosstalk value. If the anti-glare AG film is used for the surface functional film 6, the crosstalk value can be further reduced.

The present invention is not limited to the above-described embodiment, and various modifications and improvements related to the present invention are all included in the protection scope, unless the present invention is departed from the spirit and scope of the present invention.

Claims (10)

In a kind of 3D stereoscopic display polarizer,
A release film, a RAW polaroid, and a stereoscopic display film that are bonded in turn, wherein the stereoscopic display film includes a phase difference film bonded to the RAW polaroid, which is an even row of the phase difference film. The optical axis of the retardation film (SLOW AXIS) and the projection optical axis of the (RAW) polaroid is arranged in 0 ° ~ 50 ° arrangement or 130 ° ~ 180 °, the odd row of the phase difference film (ROW) of the retardation film SLOW AXIS is a sort of 3D stereoscopic display polarizer, characterized in that arranged in the 130 ° 180 ° angle or 0 ° 50 ° with the projection optical axis of the (RAW) Floyd.
The method of claim 1,
The retardation film is a sort of 3D stereoscopic display polarizer, characterized in that the cycloolefin polymer film, polycarbonate film or triacetate cellulose film.
The method of claim 1,
The in-plane retardation value of the retardation film is a kind of 3D stereoscopic display polarizer, characterized in that 80nm ~ 150nm.
The method of claim 1,
The optical transmittance of the raw (RAW) polaroid is greater than or equal to 42%, its polarization degree is greater than or equal to 99.95%, a kind of 3D stereoscopic display polarizer.
The method of claim 1,
The retardation film is a kind of 3D stereoscopic display polarizer, characterized in that the thickness of 30um ~ 200um.
The method of claim 1,
The raw polaroid includes a first protective film, a polyvinyl alcohol film and a second protective film, which are sequentially bonded, wherein the release film is bonded to the first protective film, and the retardation film is the second protective film. A kind of 3D stereoscopic display polarizer, characterized in that bonded to.
The method of claim 1,
A kind of 3D stereoscopic display polarizer further comprises an external protective film bonded to the stereoscopic display film.
8. The method according to any one of claims 1 to 7,
The stereoscopic display film is a kind of 3D stereoscopic display polarizer further comprises an anti-glare AG film, anti-reflection AR film or anti-scratch HC film bonded to the retardation film.
The method of claim 8,
AG value of the anti-glare AG film is 20% -40%, AR value of the anti-reflection AR film is less than or equal to 1.0%, HC value of the scratch-resistant HC film is greater than or equal to 2H A kind of 3D stereoscopic display polarizer.
In the method of manufacturing a kind of 3D stereoscopic display polarizer,
First, one layer of the release film is bonded to the inner surface and the outer surface of the RAW polaroid, and thereafter,
Two layers of the release film are attached to the first unwinding device in a manner that can be rotated in a relatively rotatable manner, and the rolled three-dimensional display film can also be relatively rotated. Mounting to the second unwinding device in a manner;
Spread the beginning of the release film bonded to the outer surface of the furnace polaroid, and connect the beginning of the release release film to the shaft of the first winding device, and connect the beginning of the stereoscopic display film to the furnace (RAW) The adhesive film on the outer surface of the polaroid is bonded to the open position of the release film of the (RAW) polaroid, the 3D stereoscopic display polarizing plate of claim 1 is formed, and the inner and outer surfaces respectively Connecting the 3D stereoscopic display polarizer on which the release film and the stereoscopic display film are bonded to the shaft of the second winding apparatus by at least one pair of bonding rollers;
The first and second winding drive motors respectively rotate the shafts of the first and second winding apparatuses, and thereafter, the at least one pair of the bonding rollers continuously connects the three-dimensional display film to the release film. RAW) bonding to the outer surface of the polaroid 3; A method of manufacturing a kind of 3D stereoscopic display polarizing plate, characterized in that it is carried out.

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