KR101968910B1 - Polarization glasses for 3D display device - Google Patents

Abstract

The present invention provides polarizing glasses for stereoscopic display, comprising: a left eye lens including a left eye QWP and a linear polarizer; A right eye lens including a right eye QWP and the linear polarizer; Wherein the linear polarizer has an absorption axis of 0 degree and the left eye QWP and the linear polarizer of the left eye lens are configured to be able to change positions with reference to the user's viewing direction, The right eye QWP and the linear polarizer of the right eye lens are provided with polarizing glasses configured to be able to change positions with reference to the user's viewing direction.

Description

[0001] The present invention relates to a polarizing glasses for stereoscopic display,

The present invention relates to polarizing glasses for stereoscopic display apparatuses.

As the information society has developed in recent years, the demand for the display field has been increasing in various forms, and a display device capable of realizing not only a two-dimensional plane image but also a three-dimensional stereoscopic image with respect to an image realization method has been developed.

In addition to the binocular disparity due to the distance between the two eyes, there are psychological and memorizing factors for the depth and stereoscopic effect of the human image.

One of the three-dimensional stereoscopic image display methods using these factors is a stereoscopic type in which stereoscopic effect is felt using physiological factors of both eyes.

The stereoscopic type is the ability to generate the spatial information before and after the display surface in the process of fusion of the brain by providing the plane image of the plane including the parallax information in the left and right, That is, stereography is used.

Such a stereoscopic expression system is classified into a spectacle system in which a viewer wears special glasses depending on a substantial stereoscopic generation position and a non-stereoscopic vision system in which a lens array such as a parallax barrier or a lenticular on the display side is used, . ≪ / RTI >

Among these glasses, the viewing angle is wider than that of the non-glasses type, and it is less prone to dizziness and can be manufactured at a relatively low cost.

The above-described spectacle method can be divided into a shutter spectacle method and a polarizing spectacle method.

The shutter glasses system alternately displays the left and right eye images on one screen and synchronizes the sequential opening and closing timings of the left and right shutters of the shutter glasses with the temporal difference times of the left and right eyes so that the respective images are separately recognized in the left eye and the right eye It is a method of expressing three-dimensional feeling.

Flicker phenomenon may occur when the shutter eyeglasses system is not controlled so as to perfectly match the temporal difference timings so that observers may experience fatigue such as dizziness when viewing stereoscopic images.

On the other hand, in the polarizing glasses system, the pixels of one screen are divided into two in units of row lines so that the left and right eye images are displayed in different polarization directions, and the left and right eye lenses of the polarizing glasses have different polarization directions, This is a way to express stereoscopic feeling by being recognized separately in the left eye and the right eye.

In this regard, for example, in the display device, a left-eye image of left-handed circularly polarized light and a right-eye image of right-handed circularly polarized light are emitted, and circularly polarized light corresponding to each of the left eye and right eye of the display device glasses is converted into linearly polarized light.

In each of the left eye lens and the right eye lens of the display device glasses, a quarter wave plate (QWP) and a linear polarizer are constituted. Here, QWP is located on the outer side of the lens, and the linear polarizer is located on the inner side of the lens.

Here, as the linear polarizer formed on the display device has an absorption axis of 0 degree, the linear polarizer of the left eye lens and the right eye lens has an absorption axis of 90 degrees.

However, when outdoor activities or driving, sunglasses are worn to avoid exposure to ultraviolet rays. Sunglasses usually use a line polarizer with an absorption axis of 0 degrees to cut off the light reflected on the ground.

Accordingly, when viewing the polarizing glasses-type display device in an environment with strong ultraviolet rays, it is inconvenient to carry the polarizing glasses and the sunglasses at the same time. Therefore, there is a demand for a method for improving such inconvenience.

The present invention has a problem in solving the inconvenience that the polarizing glasses and the sunglasses are carried at the same time according to the conventional polarizing glasses system.

In order to achieve the above-described object, the present invention provides a stereoscopic display polarizing eyewear comprising: a left eye lens including a left eye QWP and a linear polarizer; A right eye lens including a right eye QWP and the linear polarizer; Wherein the linear polarizer has an absorption axis of 0 degree and the left eye QWP and the linear polarizer of the left eye lens are configured to be able to change positions with reference to the user's viewing direction, The right eye QWP and the linear polarizer of the right eye lens are provided with polarizing glasses configured to be able to change positions with reference to the user's viewing direction.

Here, the left eye lens and the right eye lens are configured to rotate, and the positional change of the left eye QWP and the linear polarizer of the left eye lens and the change of the position of the right eye QWP and the linearly polarizing plate of the right eye lens through rotation of the left eye lens and the right eye lens Can be achieved.

Wherein one of the protrusions and the groove is formed on the inner surface of the spectacle frame, and each of the protrusions and the groove is formed in each of the left eye lens and the right eye lens, wherein each of the left eye lens and the right eye lens includes: .

The eyeglass leg of the eyeglass frame is rotated so that the position of the left eye QWP and the linear polarizer of the left eye lens and the position of the right eye QWP and the linear polarizer of the right eye lens can be changed through rotation of the eyeglass leg.

The left eye QWP and the right eye QWP may have one optical axis and one of 45 and 135 degrees, respectively.

In another aspect, the present invention provides a stereoscopic polarizing glasses for a stereoscopic display, comprising: a left eye lens including a left polarizing plate positioned between left eye QWP and HWP and left eye QWP and HWP; A right eye lens including a right eye QWP and the linear polarizer positioned between the HWP and the right eye QWP and the HWP; Wherein the linear polarizer has an absorption axis of 90 degrees and the left eye QWP and HWP of the left eye lens are configured to be able to change positions with reference to the user's viewing direction, The right-eye QWP and the HWP of the lens provide polarized glasses configured to be able to change positions with respect to the user's viewing direction.

Here, the left eye lens and the right eye lens are configured to rotate, and through the rotation of the left eye lens and the right eye lens, the position of the left eye QWP and HWP of the left eye lens is changed and the positions of the right eye QWP and HWP of the right eye lens are changed .

Wherein one of the protrusions and the groove is formed on the inner surface of the spectacle frame, and each of the protrusions and the groove is formed in each of the left eye lens and the right eye lens, wherein each of the left eye lens and the right eye lens includes: .

The eyeglass leg of the eyeglass frame is configured to rotate and the position of the left eye QWP and HWP of the left eye lens and the position of the right eye QWP and HWP of the right eye lens can be changed through rotation of the eyeglass leg.

The left eye QWP and the right eye QWP have one optical axis different from one of 45 degrees and 135 degrees and the HWP has one optical axis of 45 degrees and 135 degrees.

In the present invention, the arrangement of the polarizing plates constituting the lens of the polarizing glasses can be reversed on the basis of the viewing direction of the user. That is, when used for viewing purposes, the QWP is positioned on the front side in the viewing direction, and when used for sunglasses, the linear polarizer or HWP is positioned on the front side in the viewing direction.

As described above, the polarizing glasses can be used not only for viewing purposes but also for sunglasses applications.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view schematically showing a polarizing glasses type display device and polarizing glasses according to a first embodiment of the present invention; FIG.
2 is a cross-sectional view illustrating a polarizing glasses type display apparatus according to a first embodiment of the present invention.
3 is a cross-sectional view schematically showing the structure of polarizing glasses according to the first embodiment of the present invention.
4 and 5 are views showing examples of a structure for changing the position of a linear polarizer and QWP of polarizing glasses according to a first embodiment of the present invention;
6 and 7 are views schematically showing a change in light in the case where the polarizing glasses according to the first embodiment of the present invention are used for viewing and sunglasses applications, respectively.
8 is a cross-sectional view schematically showing the structure of polarizing glasses according to a second embodiment of the present invention.
9 and 10 are views schematically showing a change in light in the case where the polarizing glasses according to the second embodiment of the present invention are used for viewing and sunglasses applications, respectively.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view schematically showing a polarizing glasses type display apparatus and polarizing glasses according to a first embodiment of the present invention, and FIG. 2 is a sectional view showing a polarizing glasses type display apparatus according to a first embodiment of the present invention .

Referring to FIGS. 1 and 2, the polarizing glasses type display device 100 according to the first embodiment of the present invention corresponds to a display device for displaying a stereoscopic image.

The polarizing glasses type display device 100 may include a display panel 200, polarizers 310 and 320, and a pattern drifter 330.

Here, the display panel 200 corresponds to a configuration for generating a left eye image and a right eye image (Il, Ir) for a stereoscopic image.

As such a display panel 200, various types of flat panel display panels can be used. For example, a liquid crystal display panel, a field emission display panel, a plasma display panel, an inorganic electroluminescent panel, and an organic light emitting diode panel, An electroluminescent display panel, an electrophoresis display panel, and the like, may be used.

Here, when a liquid crystal display panel is used, a backlight unit 350 for supplying light to the liquid crystal display panel is further provided in the display device 100. [

In the first embodiment of the present invention, a liquid crystal display panel is used as the display panel 200 for convenience of explanation.

The liquid crystal display panel 200 includes two substrates facing each other, for example, a lower array substrate 210, an upper opposing substrate 220, and a liquid crystal layer 250 disposed between the two substrates 210 and 220 .

Such a liquid crystal display panel 200 includes a left eye pixel line H1 and a right eye pixel line Hr extending in a first direction, for example, in a horizontal direction (i.e., a row line direction).

Here, the left eye pixel line Hl generates the left eye image Il and the right eye pixel line Hr generates the right eye image Ir.

The left-eye pixel line Hl and the right-eye pixel line Hr may be alternately arranged in a second direction that crosses the first direction, for example, in the vertical direction (that is, in the row-direction).

On the other hand, in each of the left-eye pixel line and the right-eye pixel line Hl and Hr, a large number of pixels P are arranged along the horizontal direction. Here, for example, red (R), green (G), and blue (B) pixels P may be alternately arranged along the horizontal direction in each of the left eye pixel line and the right eye pixel line Hl and Hr.

The array substrate 210 of the liquid crystal display panel 200 may include an array element. For example, on a transparent first substrate 211, gate wirings and data wirings (not shown) that define the pixels P and a transistor TS as a switching element connected to these gate wirings and data wirings And a pixel electrode 218 connected to the transistor TS.

Here, the transistor TS may include a gate electrode 212, a semiconductor layer 214, and source and drain electrodes 215 and 216. A gate insulating layer 213 may be formed on the gate electrode 212 and a passivation layer 217 may be formed on the transistor TS.

On the other hand, the counter substrate 220 includes, for example, a black matrix BM, a color filter 222 corresponding to the pixel P, a black matrix and color filters BM, And a common electrode 224 formed on a lower portion of the substrate 210. In addition, an overcoat layer 223 for planarization may be formed under the common electrode 224.

Here, the black matrix BM extends horizontally along the boundary between the left-eye pixel line and the right-eye pixel line Hl and Hr. For example, the black matrix BM may be configured to overlap the boundary portions of neighboring left and right eye pixel lines Hl and Hr.

Green (G), and blue (B) color filters 222 corresponding to red (R), green (B), and blue (B) Can be used.

The common electrode 224 forms an electric field with the pixel electrode 218 formed on the array substrate 210. The liquid crystal layer 250 is driven by the thus formed electric field to display an image.

On the other hand, although not specifically shown, an alignment film for aligning the liquid crystal layer 250 may be formed on each of the array substrate and the opposing substrates 210 and 220.

The linear polarizer 310 may be positioned on the front surface of the liquid crystal display panel 200 as described above. Here, it is preferable that the absorption axis of the linearly polarizing plate 310 is arranged to have an angle of 90 degrees parallel to the paper surface.

Accordingly, linearly polarized light having a polarization component of 0 degrees can be output through the front linear polarizer 310.

On the other hand, another linear polarizer 320 may be positioned on the back surface of the liquid crystal display panel 200. The absorption axis of the linear polarizer 320 on the rear surface may be arranged so as to be perpendicular to the absorption axis of the linear polarizer 310 on the front surface, but is not limited thereto. That is, the linear polarizer 320 on the back surface has a zero degree.

Here, for convenience of explanation, the linear polarizers 310 and 320 disposed on the front and rear surfaces of the liquid crystal display panel 200 may be referred to as second and third linear polarizers 310 and 320, respectively.

The backlight unit 350 may be disposed below the liquid crystal display panel 200 as a light source for supplying light.

A pattern drifter 330 for converting the linearly polarized light emitted from the second linear polarizer 310 into circularly polarized light is disposed on the front surface of the second linear polarizer 310.

The pattern drifter 330 includes a left eye retarder Ql2 extending along the horizontal direction and corresponding to the left eye pixel line Hl and a right eye retarder Qr2 corresponding to the right eye pixel line Hr . Therefore, the left-eye retarder Ql2 and the right-eye retarder Qr2 can be alternately arranged along the vertical direction.

Here, the left eye retarder Ql2 and the right eye retarder Qr2 convert incident light into circularly polarized light in mutually opposite directions. For example, the left eye retarder Ql2 modulates incident light into left circularly polarized light (or right circularly polarized light), and right eye retarder Qr2 modulates incident light into right circularly polarized light (or left circularly polarized light).

For such a light conversion, each of the left eye retractor Ql2 and the right eye retracter Qr2 may be configured as a QWP. In such a case, the left-eye QWP (Ql2) and the right-eye QWP (Qr2) are arranged such that their optical axes are mutually perpendicular. For example, the left eye QWP (Ql2) may have an optical axis of 135 degrees (i.e., -45 degrees), and the right eye QWP may have an optical axis of 45 degrees (i.e., +45 degrees). On the other hand, conversely, the left eye QWP (Ql2) has an optical axis of 45 degrees and the right eye QWP (Qr2) has an optical axis of 135 degrees.

Accordingly, circularly polarized light in directions opposite to each other is generated through the left eye QWP and the right eye QWP (Ql2, Qr2).

Here, for convenience of explanation, the left eye QWP and the right eye QWP (Ql2, Qr2) may be referred to as a second left eye QWP and a second right eye QWP (Ql2, Qr2), respectively.

The left eye image and the right eye image (Il, Ir) generated through the display device 100 as described above are transmitted to the left eye and the right eye of the user through the polarized glasses 400 and synthesized, .

Meanwhile, the polarizing glasses 400 according to the first embodiment of the present invention can be used not only for stereoscopic viewing but also for sunglasses that block ultraviolet rays.

As described above, the polarizing glasses 400 that can be used for viewing video and for sharing sunglasses will be described with reference to FIG. 3 is a cross-sectional view schematically showing the structure of the polarizing glasses according to the first embodiment of the present invention.

Referring to FIG. 3, the polarizing glasses 400 may include a left eye lens and right eye lenses 410 and 420, and an eyeglass frame 430.

The left eye lens 410 may include a first linear polarizer 440 and a first left eye QWP (Ql1). The right eye lens 420 may include a first linear polarizer 440 and a first right eye QWP (Qr1).

Here, the absorption axis of the first linear polarizer 440 is perpendicular to the absorption axis of the second linear polarizer 310. That is, the first linearly polarizing plate 440 is configured to have an absorption axis of 0 degree.

The first left eye QWP (Ql1) is configured to have the same optical axis as the second left eye QWP (Ql2), and the first right eye QWP (Qr1) is preferably configured to have the same optical axis as the second right eye QWP .

When the polarized glasses 400 are used for watching, the first linear polarizer 440 is disposed inside the polarizing glasses 400 as a position relatively close to the user's eyes, and the first left-eye QWP (Q11) and The first right eye QWPs (Ql1, Qr1) are disposed on the outer side of the polarizing glasses (400) as a position relatively away from the user's eyes.

On the other hand, when the polarizing glasses 400 are used for a sunglass application, they are arranged in the reverse order. That is, the first line polarizer 440 is disposed on the outer side of the polarizing glasses 400 as a position relatively far from the user's eyes, and the first left eye QWP (Q11) and the first right eye QWP (Q11, Qr1) And is disposed inside the polarizing glasses 400 as a position distant from the user's eyes.

In this way, the position of the linear polarizer 440 and the QWP (Ql1, Qr1) can be reversed so that the user can use one polarizing glasses 400 for viewing or sunglasses applications.

Meanwhile, the positional change of the linear polarizer 440 and the QWP (Ql1, Qr1) as described above can be performed through rotation of the lenses 410, 420.

4, protrusions 433 protruding outward are formed on the inner surface of the lens frame 431 of the spectacle frame on which the lenses 410 and 420 are mounted, and correspondingly, 410 and 420 are formed with grooves 435 which are engaged with the projections 433. According to this structure, the lenses 410 and 420 can be rotated by using the projections 433 as rotation axes, so that the position of the linear polarizer 440 and the QWPs Ql1 and Qr1 can be changed according to the application .

On the other hand, contrary to the above, grooves 435 may be formed inside the lens frame 431, and protrusions 433 may be formed on the lenses 410 and 420.

Here, the rotation axis may be a width direction of the lenses 410 and 420 (i.e., a horizontal direction to the paper surface) or a height direction (i.e., a direction perpendicular to the paper surface), but is not limited thereto.

5, the leg 432 of the eyeglass frame 430 may be rotated 180 degrees with respect to a rotation axis perpendicular to the paper surface, and the linear polarizer 440 may be rotated according to the application, And the position of the QWP (Ql1, Qr1) may be changed.

The above-described structure for rotating the lens or rotating the frame of the eyeglass frame is an example for changing the position of the linear polarizer 440 and QWP (Ql1, Qr1) of the polarizing glasses 400 according to the application, Will be apparent to those skilled in the art.

6 and 7, the viewing purpose and the use of the sunglasses of the polarizing glasses according to the first embodiment of the present invention will be described in more detail.

FIGS. 6 and 7 are views schematically showing changes in light in the case of using the polarizing glasses according to the first embodiment of the present invention for viewing and sunglasses applications, respectively.

6, when the polarizing glasses 400 are used for watching, the first left eye QWP and the first right eye QWP (Ql1, Qr1) are positioned on the outer side, and the first linear polarizing plate 440 As shown in Fig.

In this case, 0-degree linearly polarized light is emitted from the second linear polarizer 310 having an absorption axis at 90 degrees, which is incident on the second left eye QWP and the second right eye QWP (Ql2, Qr2).

Since the optical axes of the second left eye QWP and the second right eye QW2 (Ql2, Qr2) are 90 degrees from each other, the incident linearly polarized light is converted into circularly polarized light in different directions. For example, when the second left eye QWP (Ql2) has an optical axis of 135 degrees and the second right eye QWP (Qr2) has an optical axis of 45 degrees, the second left eye QWP (Ql2) (Qr2) can emit right-handed circularly polarized light.

The circularly polarized light thus emitted is incident on the corresponding lenses 410 and 420. The first left eye QWP and the first right eye QWP (Ql1, Qr1) are located on the outer side, so that the left and right first and second right eye QWPs Ql1, .

The first left eye QWP (Q11) has the same optical axis as the second left eye QWP (Q12), and the first right eye QWP (Qr1) has the same optical axis as the second right eye QWP (Qr2). Accordingly, the first left-eye QWP (Q11) converts the incident left-handed circularly polarized light into linearly polarized light of 90 degrees and emits it. Then, the first right eye QWP (Qr1) converts incident right circularly polarized light into linearly polarized light of 90 degrees and emits it.

The 90-degree linearly polarized light emitted in this way is incident on the first linearly polarizing plate 440 of the left eye lens and the right eye lenses 410 and 420. Here, the absorption axis of the first linearly polarizing plate 440 is perpendicular to the absorption axis of the second linearly polarizing plate 310, and thus has an absorption axis of 0 degree. Accordingly, the 90-degree linearly polarized light passes through the first polarizing plate 440 and can be incident on the left and right eyes.

Thus, by disposing the first linearly polarizing plate 440 on the inner side, the polarizing glasses 400 can be used for watching.

7, when the polarizing glasses 400 are used for a sunglass application, the first left eye QWP and the first right eye QWP (Ql1, Qr1) are located on the inner side and the first left eye QWP And the linearly polarizing plate 440 is disposed on the outer side.

The light emitted from an external light source such as the sun corresponds to unpolarized light having a random polarization component. When such non-polarized light is incident on the paper surface, linearly polarized light having a polarization component substantially at 0 degrees is reflected.

The zero-degree linearly polarized light is incident on the lenses 410 and 420. When the polarizing glasses 400 are used for a sunglass application, the first linear polarizer 440 is positioned on the outer side, so that linearly polarized light of 0 degrees is absorbed by the first linear polarizer 440.

Thus, by disposing the first linearly polarizing plate 440 so as to be positioned on the outer side, the light reflected from the ground can not be absorbed by the polarizing glasses 400 and can not be transmitted. Therefore, the polarizing glasses 400 can function as a sunglass.

Meanwhile, in the display device 100 according to the first embodiment of the present invention described above, the absorption axis of the second polarizing plate 310 has 90 degrees. In this case, the effect of improving the crosstalk of the image .

8 is a cross-sectional view schematically showing the structure of a polarizing glasses according to a second embodiment of the present invention.

Hereinafter, description of similar components to those of the first embodiment will be omitted.

Referring to FIG. 8, QWP (Ql1, Qr1) and a first linear polarizer 40 are formed on the left eye lens and the right eye lens 410, 420 of the polarizing glasses 400 according to the second embodiment of the present invention, In addition, HWP (Half Wave Plate; Hw) is further constructed.

The first linearly polarizing plate 440 of each of the left eye lens and the right eye lenses 410 and 420 of the second embodiment of the present invention is preferably configured to have an absorption axis of 90 degrees. Accordingly, the second polarizing plate (see 310 in Fig. 1) of the display device according to the second embodiment of the present invention (see 100 in Fig. 1) is configured to have an absorption axis of 0 degree.

As in the first embodiment, the first left eye QWP and the first right eye QWP (Ql1, Qr1) have an optical axis of 90 degrees.

The HWP (Hw) faces the QWP (Ql1, Qr1) with the first linearly polarizing plate 440 therebetween. The HWP (Hw) functions to change the direction of incident polarized light by 90 degrees.

As described above, as the first polarizing plate 440 has an absorption axis of 90 degrees, HWP (Hw) is preferably configured to have an optical axis of 45 degrees or 135 degrees.

In the second embodiment of the present invention, when the polarizing glasses 400 are used for viewing, HWP (Hw) is disposed inside the polarized glasses 400 as a position relatively close to the user's eyes, The left eye QWP (Ql1) and the first right eye QWP (Ql1, Qr1) are disposed on the outer side of the polarizing glasses (400) as a position relatively away from the user's eyes.

On the other hand, when the polarizing glasses 400 are used for a sunglass application, they are arranged in the reverse order. That is, the HWP (Hw) is disposed on the outer side of the polarizing glasses 400 as a position relatively far from the user's eyes, and the first left eye QWP (Ql1) and the first right eye QWP (Ql1, Qr1) And is disposed inside the polarized glasses 400 as a position distant from the eye.

By thus configuring the position of the HWP (Hw) and QWP (Ql1, Qr1) to be reversed, the user can use one polarized eyeglass 400 for viewing or sunglasses applications.

Hereinafter, the viewing purpose and the use of the sunglasses of the polarizing glasses according to the second embodiment of the present invention will be described in more detail with reference to Figs. 9 and 10. Fig.

Figs. 9 and 10 are diagrams schematically showing changes in light in the case where the polarizing glasses according to the second embodiment of the present invention are used for viewing and sunglasses applications, respectively.

9, when the polarized glasses 400 are used for watching, the first left eye QWP and the first right eye QWP (Ql1, Qr1) are located on the outer side, and the HWP (Hw) .

In this case, linearly polarized light of 90 degrees is emitted from the second linear polarizer 310 having an absorption axis of 0 degrees, which is incident on the second left eye QWP and the second right eye QWP (Ql2, Qr2).

Since the optical axes of the second left eye QWP and the second right eye QW2 (Ql2, Qr2) are 90 degrees from each other, the incident linearly polarized light is converted into circularly polarized light in different directions. For example, when the second left eye QWP (Ql2) has an optical axis of 45 degrees and the second right eye QWP (Qr2) has an optical axis of 135 degrees, the second left eye QWP (Ql2) (Qr2) can emit right-handed circularly polarized light.

The circularly polarized light thus emitted is incident on the corresponding lenses 410 and 420. The first left eye QWP and the first right eye QWP (Ql1, Qr1) are located on the outer side, so that the left and right first and second right eye QWPs Ql1, .

The first left eye QWP (Q11) has the same optical axis as the second left eye QWP (Q12), and the first right eye QWP (Qr1) has the same optical axis as the second right eye QWP (Qr2). Accordingly, the first left-eye QWP (Q11) converts the incident left-handed circularly polarized light into 0-degree linearly polarized light and emits it. Then, the first right eye QWP (Qr1) converts the incident right circularly polarized light into zero-degree linearly polarized light and emits it.

The zero-degree linearly polarized light emitted in this manner is incident on the first line polarizer 440 of the left eye lens and the right eye lenses 410 and 420. Here, the first linearly polarizing plate 440 has an absorption axis of 90 degrees since the absorption axis is perpendicular to the second linearly polarizing plate 310. Accordingly, the linearly polarized light of 0 degrees passes through the first polarizing plate 440.

The zero-degree linearly polarized light thus passed is incident on the HWP (Hw) of the left eye lens and the right eye lenses 410 and 420. Here, HWP (Hw) has an optical axis of 45 degrees or 135 degrees. Accordingly, the 0-degree linearly polarized light can be converted into the 90-degree linearly polarized light and can be incident on the left and right eyes.

Thus, by disposing the HWP (Hw) inside, it becomes possible to use the polarized glasses 400 for viewing purposes.

10, when the polarizing glasses 400 are used for a shading application, the first left eye QWP and the first right eye QWP (Ql1, Qr1) are located on the inner side and the HWP ( Hw are disposed on the outer side.

The light emitted from an external light source such as the sun corresponds to unpolarized light having a random polarization component. When such non-polarized light is incident on the paper surface, linearly polarized light having a polarization component substantially at 0 degrees is reflected.

The zero-degree linearly polarized light is incident on the lenses 410 and 420. When the polarized glasses 400 are used for a sunglass application, the HWP (Hw) is located on the outer side, so that linearly polarized light of 0 degrees passes through HWP (Hw) and is converted into linearly polarized light of 90 degrees.

The converted linearly polarized light of 90 degrees is incident on the first linearly polarizing plate 440 of the lenses 410 and 420. The first linearly polarizing plate 440 has an absorption axis of 90 degrees, and the incident linearly polarized light of 90 degrees is absorbed by the first linearly polarizing plate 440.

Thus, by arranging the HWP (Hw) to be located on the outer side, the light reflected from the ground can not be absorbed by the polarized glasses 400 and can not be transmitted. Therefore, the polarizing glasses 400 can function as a sunglass.

In the display device according to the second embodiment of the present invention described above, the absorption axis of the second polarizing plate 310 has a zero degree. In such a case, the contrast ratio is improved.

As described above, according to the embodiments of the present invention, the arrangement of the polarizing plates constituting the lens of the polarizing glasses can be reversed based on the viewing direction of the user. That is, when used for viewing purposes, the QWP is positioned on the front side in the viewing direction, and when used for sunglasses, the linear polarizer or HWP is positioned on the front side in the viewing direction.

As described above, the polarizing glasses can be used not only for viewing purposes but also for sunglasses applications.

The embodiment of the present invention described above is an example of the present invention, and variations are possible within the spirit of the present invention. Accordingly, the invention includes modifications of the invention within the scope of the appended claims and equivalents thereof.

400: polarizing glasses 410: left eye lens
420: Uanorez 430: Glasses frame
440: first-line polarizer Ql1: first left-eye QWP
Qr1: 1st right eye QWP

Claims (12)

In polarizing glasses for stereoscopic display apparatuses,
A left eye lens including a left eye QWP and a linear polarizer;
A right eye lens including a right eye QWP and the linear polarizer;
And an eyeglass frame to which the left and right eye lenses are mounted,
Both of the linear polarizer of the left eye lens and the linear polarizer of the right eye lens have absorption axes of 0 degree parallel to the paper surface,
Wherein the left eye QWP and the line polarizer of the left eye lens are configured such that the positions of the left eye QWP and the right eye polarizing plate can be changed when the polarizing glasses are used for viewing and sunglasses, The polarizing plate is configured such that the polarizing glasses can be changed in position when viewed from the user viewing direction and when the polarizing glasses are used for watching and sunglasses applications,
The left-eye QWP and the right-eye QWP have one of 45 and 135 degrees and another optical axis
Polarized glasses.
The method according to claim 1,
Wherein the left and right eye lenses are configured to be rotated,
The positions of the left eye QWP and the linear polarizer of the left eye lens are changed and the positions of the right eye QWP and the linear polarizer of the right eye lens are changed through rotation of the left eye lens and the right eye lens
Polarized glasses.
3. The method of claim 2,
Wherein one of projections and grooves corresponding to each other is formed on the inner surface of the spectacle frame,
Wherein one of the protrusion and the groove is formed in each of the left eye lens and the right eye lens,
Wherein each of the left eye lens and the right eye lens is rotated with the projection as a rotation axis
Polarized glasses.
The method according to claim 1,
Wherein the spectacle frame of the spectacle frame is configured to be rotated,
The position of the left eye QWP and the line polarizer of the left eye lens are changed and the position of the right eye QWP and the linear polarizer of the right eye lens are changed through rotation of the eyeglass leg
Polarized glasses.
delete In polarizing glasses for stereoscopic display apparatuses,
A left eye lens including a left-eye QWP and a linear polarizer positioned between the HWP and the left-eye QWP and the HWP;
A right eye lens including a right eye QWP and the linear polarizer positioned between the HWP and the right eye QWP and the HWP;
And an eyeglass frame to which the left and right eye lenses are mounted,
Both the linear polarizer of the left eye lens and the linear polarizer of the right eye lens have absorption axes of 90 degrees perpendicular to the paper surface,
Wherein the left eye QWP and HWP of the left eye lens are configured such that the polarizing glasses are used for watching and sunglasses applications with respect to the user's viewing direction, Is configured such that the position of the polarizing glasses can be changed between the case where the polarizing glasses are used for viewing and the case where the polarizing glasses are used for sunglasses,
The left-eye QWP and right-eye QWP have one optical axis and one of 45 and 135 degrees, respectively,
The HWP has one of the optical axes of 45 and 135 degrees
Polarized glasses.
The method according to claim 6,
Wherein the left and right eye lenses are configured to be rotated,
The position of the left eye QWP and the position of the right eye WWP of the left eye lens and the position of the right eye QWP and HWP of the right eye lens are changed through rotation of the left eye lens and the right eye lens
Polarized glasses.
8. The method of claim 7,
Wherein one of projections and grooves corresponding to each other is formed on the inner surface of the spectacle frame,
Wherein one of the protrusion and the groove is formed in each of the left eye lens and the right eye lens,
Wherein each of the left eye lens and the right eye lens is rotated with the projection as a rotation axis
Polarized glasses.
The method according to claim 6,
Wherein the spectacle frame of the spectacle frame is configured to be rotated,
The positions of the left eye QWP and HWP of the left eye lens are changed and the positions of the right eye QWP and HWP of the right eye lens are changed through rotation of the eyeglass leg
Polarized glasses.
delete delete delete

Images