KR101712014B1 - 3-dimensional image realization system and glasses - Google Patents

Abstract

The present invention provides a display apparatus comprising: a display device for alternately outputting a left eye image and a right eye image; A left eye shutter lens that is in a transmission state in synchronism with the left eye image output, a right eye shutter lens that is in a transmission state in synchronization with the right eye image output, and a second lens which is detachably attached to the front surface or back surface of each of the left and right eye lens And a shutter glasses including an ND (neutral density) filter.

Description

A three-dimensional image realization system and glasses

The present invention relates to a three-dimensional imaging system, and more particularly, to a three-dimensional imaging system and a spectacle.

2. Description of the Related Art [0002] With the development of an information society, demands for a display device for displaying images have been increasing in various forms. Recently, a liquid crystal display (LCD), a plasma display panel (PDP) Various flat display devices such as an organic light emitting diode (OLED) have been utilized.

Such a display device generally displays a two-dimensional plane image. However, in recent years, as the demand for three-dimensional stereoscopic images increases, display devices capable of realizing such stereoscopic images have been researched and developed.

A method of implementing a three-dimensional image can be divided into a spectacle method in which a user wears separate glasses to implement a three-dimensional image and a non-spectacle method in which a three-dimensional image can be implemented without wearing any additional spectacles.

On the other hand, in recent years, a shutter glasses system has attracted attention as a glasses system. In such a shutter glasses system, the display apparatus alternately outputs the left eye image and the right eye image alternately in frame units, and the left eye shutter lens and the right eye shutter lens are alternately opened and closed in synchronization with the image display. Accordingly, the left eye image and the right eye image corresponding to the left eye and the right eye of the user are alternately input. The left eye image and the right eye image are alternately outputted in units of several milliseconds (ms), and the user feels that the left eye image and the right eye image are input substantially without time difference. The left eye image and the right eye image thus inputted are transmitted to the user's brain and synthesized, thereby realizing a three-dimensional stereoscopic image.

However, in the conventional shutter glasses system, when the user watches in an environment in which the ambient light is strong, a problem occurs that the user feels flicker. For example, in a midday environment in which sunlight directly affects the sunlight, strong sunlight enters the shutter glasses directly or indirectly. Such a shutter eyeglass is driven at a frequency of about 50 Hz or 60 Hz in synchronism with the video display frequency, which falls within the range of 58 Hz to 72 Hz, which is the frequency range of the user's senses. do. Thus, the user becomes strongly aware of the flicker.

An object of the present invention is to provide a three-dimensional image implementing system and a spectacle that can improve flicker.

In order to achieve the above-described object, the present invention provides a display apparatus comprising: a display device for alternately outputting a left eye image and a right eye image; A left eye shutter lens that is in a transmission state in synchronism with the left eye image output, a right eye shutter lens that is in a transmission state in synchronization with the right eye image output, and a second lens which is detachably attached to the front surface or back surface of each of the left and right eye lens And a shutter glasses including an ND (neutral density) filter.

Here, the left-eye shutter lens and the right-eye shutter lens each include a liquid crystal panel; And first and second polarizing plates attached to the rear and front surfaces of the liquid crystal panel, respectively.

The shutter glasses may be driven at a frequency of 50 Hz or 60 Hz.

The ND filter can be attached in an illuminance environment higher than 500 lux.

According to another aspect of the present invention, there is provided a shutter eyeglass used in a system for implementing a three-dimensional image through a left eye image and a right eye image alternately output from a display device, the shutter eyeglass comprising: Wow; A right eye shutter lens which is in a transmission state in synchronization with the right eye image output; And an ND filter configured to be detachably attached to the front surface or back surface of each of the left and right eye shutter lenses.

Here, the left-eye shutter lens and the right-eye shutter lens each include a liquid crystal panel; And first and second polarizing plates attached to the rear and front surfaces of the liquid crystal panel, respectively.

The shutter glasses may be driven at a frequency of 50 Hz or 60 Hz.

The ND filter can be attached in an illuminance environment higher than 500 lux.

In the present invention, the shutter glasses can be constructed so that the ND filter can be selectively attached and detached to the front surface or the back surface of the shutter lens. This makes it possible to improve flicker occurring in a high illuminance environment.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 schematically illustrates a three-dimensional image implementation system according to a first embodiment of the present invention; FIG.
2 is a view schematically showing a driving method of a three-dimensional image realization system according to a first embodiment of the present invention.
3 is a cross-sectional view schematically showing the structure of the shutter glasses of Fig. 1;
4 is a cross-sectional view schematically showing a structure of a shutter glasses used in a three-dimensional image realization system according to a second embodiment of the present invention.

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

FIG. 1 is a view schematically showing a three-dimensional image forming system according to a first embodiment of the present invention, FIG. 2 is a view schematically showing a driving method of a three-dimensional image forming system according to a first embodiment of the present invention And FIG. 3 is a sectional view schematically showing the structure of the shutter glasses of FIG.

Referring to FIG. 1, a three-dimensional image forming system 100 according to a first embodiment of the present invention may include a display device 200 and shutter glasses 300.

The display device 200 is a device for alternately outputting the left eye image and the right eye image frame by frame, and for example, a flat panel display device such as a liquid crystal display device, a plasma display device, and an organic electroluminescent device can be used. In the embodiment of the present invention, for convenience of explanation, a liquid crystal display device is used as the display device 200 as an example.

The liquid crystal display device 200 may include first and second substrates 210 and 220 facing each other and a first liquid crystal layer (not shown) interposed between the first and second substrates. Here, the first and second substrates 210 and 220 may correspond to an array substrate and a color filter substrate, respectively.

The liquid crystal display device 200 may further include first and second polarizing plates 230 and 240 attached to the outer surfaces of the first and second substrates 210 and 220, respectively.

The liquid crystal display device 200 may further include a backlight unit positioned on the back surface of the first polarizer 230, though not shown. Such a backlight unit includes a light source that supplies light to the liquid crystal display device 200. [

Here, a direct type backlight unit in which the light source is located at the bottom of the back surface of the first substrate 210 is used, or an edge type backlight unit in which the light source is located at the side of the liquid crystal display device 200 Can be used.

Gate wirings and data wirings 216 and 218 are formed on the first substrate 210 to define a plurality of pixel regions P arranged in a matrix form intersecting each other.

In the pixel region P, a thin film transistor Tr connected to the gate wiring and the data wiring 216 and 218 is formed as a switching element. The thin film transistor Tr may include a gate electrode connected to the gate wiring 216, a semiconductor layer, a source electrode connected to the data line 218, and a drain electrode spaced apart from the source electrode.

Meanwhile, the pixel region P may include a pixel electrode 219 connected to the drain electrode of the thin film transistor Tr.

On the second substrate 220, a black matrix 221 is formed corresponding to the boundary of the pixel region P. The black matrix 221 may have an opening corresponding to the pixel region P. [

A color filter layer 222 is formed on the second substrate 220 in correspondence with the pixel region P. [ The color filter layer 222 may include a red (R) color filter pattern, a green (G) color filter pattern, and a blue (B) color filter pattern. Each of the red (R) color filter pattern, the green (G) color filter pattern, and the blue (B) color filter pattern may be formed in the corresponding pixel region P.

A common electrode (not shown) covering the color filter layer 222 may be formed on the entire surface of the second substrate 220.

In the liquid crystal display device 200 as described above, the gate wiring 216 is sequentially scanned and a gate voltage is applied. When the gate voltage is applied in this way, the thin film transistor Tr connected to the scanned gate wiring 216 is turned on. In synchronization with the turn-on of the thin film transistor Tr, a data voltage is outputted to the data line 218 and applied to the corresponding pixel electrode 219. On the other hand, a common voltage is applied to the common electrode. The difference between the data voltage applied to the pixel electrode 219 and the common voltage applied to the common electrode in this manner causes an electric field to be generated in the first liquid crystal layer and the arrangement of the liquid crystal molecules changes. By driving the first liquid crystal layer, a desired image can be displayed.

Meanwhile, the liquid crystal display 200 according to the first embodiment of the present invention alternately displays the left eye image and the right eye image on a frame-by-frame basis and outputs the same. For example, the left eye image can be outputted in the odd frame and the right eye image can be outputted in the even frame.

In the above description, the first liquid crystal layer is driven by the electric field generated between the two substrates 210 and 220, for example. As the liquid crystal display device 200 that drives the liquid crystal layer by the electric field generated between the substrates 210 and 220, for example, a twisted nematic mode liquid crystal display device, a VA (vertical alignment mode) liquid crystal display Device or the like can be used.

Meanwhile, in the embodiment of the present invention, the liquid crystal display device 200 that drives the liquid crystal layer by an electric field parallel to the substrates 210 and 220 may be used. As the liquid crystal display device 200 that drives the liquid crystal layer by the horizontal electric field, for example, a liquid crystal display device of an in-plane switching mode (IPS mode) can be used. In the transverse electric field type liquid crystal display device, the common electrode and the pixel electrode are formed on the same substrate or array substrate 210 to form a transverse electric field. The common electrode and the pixel electrode are alternately arranged in the pixel region P .

It will be apparent to those skilled in the art that various other types of liquid crystal display devices other than the above-described methods can be used.

The shutter glasses 300 according to the first embodiment of the present invention includes a left eye shutter lens and right eye shutter lenses 310 and 320 and a frame 330 on which the left and right eye lens lenses 310 and 320 are mounted ).

Each of the left and right eye shutter lenses 310 and 320 has a transmission state and a blocking state alternately by a shutter operation. The left-eye shutter lens and the right-eye shutter lens 310, 320 have a transmission state alternately. Accordingly, each of the left eye image and the right eye image passes through the corresponding left eye lens 310 and right eye lens 320, and is incident on the left and right eyes of the user. Here, the shutter glasses 300 can operate at a frequency of, for example, 50 Hz or 60 Hz in synchronization with the video display cycle of the display device 200.

Hereinafter, the operation of the shutter glasses 300 will be described in more detail with reference to FIG. Here, it is assumed that the left eye image is output during the odd frame and the right eye image is output during the even frame.

In this case, in synchronization with the odd-numbered frames, the left-eye shutter lens 310 is in the transmitting state and the right-eye shutter lens 320 is in the blocking state. Accordingly, the left eye image of the odd-numbered frame can be input to the left eye of the user through the left eye shutter lens 310.

On the other hand, in synchronization with the even-numbered frames, the right-eye shutter lens 320 is in the transmitting state and the left-eye shutter lens 310 is in the blocking state. Accordingly, the right eye image of the even-numbered frame can be input to the right eye of the user through the right eye shutter lens 320. [

Hereinafter, the sectional structure of the left eye shutter lens 310 and the right eye shutter lens 320 of the shutter glasses 300 according to the first embodiment of the present invention will be described in more detail with reference to FIG.

Here, the cross-sectional structures of the left-eye shutter lens 310 and the right-eye shutter lens 320 are substantially the same. For convenience of explanation, the left-eye shutter lens 310 and the right- It can be referred to as a shutter lens SL.

The shutter lens SL may include a liquid crystal panel 400 and third and fourth polarizing plates 440 and 450 attached to two opposing outer surfaces of the liquid crystal panel 400, .

The liquid crystal panel 400 includes third and fourth substrates 410 and 420 facing each other and first and second electrodes 411 and 421 formed on the inner surfaces of the first and second substrates 410 and 420, And a second liquid crystal layer 430 interposed between the two electrodes 411 and 421.

For convenience of explanation, the third substrate 410 is a substrate positioned close to the user, and the fourth substrate 420 is defined as a substrate positioned close to the display device 200.

The third and fourth polarizing plates 440 and 450 may be attached to the outer surfaces of the third and fourth substrates 410 and 420, respectively. Here, the third and fourth polarizing plates 440 and 450 may be configured such that their transmission axes are perpendicular to each other.

In such a case, the arrangement state of the liquid crystal molecules located in the second liquid crystal layer 430 can be changed by the voltage difference between the voltages applied to the first and second electrodes 411 and 421. By changing the alignment state of the liquid crystal molecules, the shutter lens SL can have a transmission state through which light is transmitted or a shutoff state in which light is blocked.

For example, when the liquid crystal panel 400 has the normally black mode characteristic, the first and second electrodes 411 and 421 have substantially the same voltage, so that a voltage difference does not occur between the two electrodes So that the shutter lens SR has a shutoff state. On the other hand, if a voltage difference is generated between the first and second electrodes 411 and 421 so as to transmit light, the shutter lens SL can have a transmission state.

When the liquid crystal panel 400 has a normally white mode characteristic, it will operate in the opposite manner to the normally black mode described above.

The output left eye image is input to the left eye through the left eye lens 310 by operating the left eye lens 310 and the right eye lens 320 based on the driving characteristics of the shutter lens SL as described above , The output right eye image can be input to the right eye through the right eye shutter lens 320. [ Accordingly, the user can feel the three-dimensional image by synthesizing the input left-eye image and the right-eye image.

In the above description, the second liquid crystal layer 430 is driven by the electric field generated between the two substrates 410 and 420. As the liquid crystal panel 400 that drives the liquid crystal layer by the electric field between the two substrates 410 and 420, for example, a TN type liquid crystal panel, a VA type liquid crystal panel, or the like can be used.

As the liquid crystal panel 400, a transverse electric field type liquid crystal panel can be used. In such a case, the first and second electrodes 411 and 421 may be alternately arranged on the inner surface of the first substrate 410 or the second substrate 420.

Of course, it will be apparent to those skilled in the art that various other types of liquid crystal panels can be used other than the above-described methods.

Meanwhile, the shutter glasses 300 according to the first embodiment of the present invention may further include a neutral density filter (NDF).

The ND filter NDF does not affect the color of the image output from the display device 200 and the amount of incident light can be reduced.

Here, the ND filter NDF used in the first embodiment of the present invention may be positioned on the front surface of the shutter lens SL. Furthermore, such an ND filter (NDF) can be configured to be removable.

As described above, according to the first embodiment of the present invention, since the ND filter NDF can be detachably attached to the shutter lens SL, it is possible to improve the problem that flicker occurs due to the surrounding environment.

In this regard, the illuminance at home in the daytime by sunlight is about 5000 lux. In such a case, if the ND filter (NDF) having a transmittance of, for example, 10 ^-1 is used, the illuminance level becomes 10 times as low as (5000 lux) * 10 ^-1 = 500 lux.

The illuminance by the sunlight itself in the daytime is about 20000 lux. In such a case, if the ND filter (NDF) having a transmittance of, for example, 10 ^-2 is used, the illuminance level becomes 100 times as low as (20000 lux) * 10 ^-2 = 200 lux.

As described above, under a high illuminance environment, by attaching the ND filter NDF to the entire surface of the shutter lens SL, the illuminance level felt by the user can be lowered. This makes it possible to prevent a flicker phenomenon caused by a high illuminance environment.

In a general illumination environment where the flicker phenomenon is not noticeable, for example, in an indoor environment, the illumination is about 500 lux. In such an environment, flicker due to ambient light is not felt. Therefore, in the general illuminance environment, the ND filter NDF is detached from the shutter glasses 300, so that all the light output to the display device 200 can be incident.

As described above, in the first embodiment of the present invention, the shutter glasses 300 can be configured so that the ND filter NDF can be selectively attached and detached to the front surfaces of the left and right eye shutter lenses 310 and 320, respectively . This makes it possible to improve flicker occurring in a high illuminance environment.

On the other hand, one or more ND filters (NDFs) may be provided, and the user may select one of them to attach and detach the ND filter.

Various methods can be used as the detachment / attachment method. For example, the eyeglass frame 330 may be provided with an insertion port so that the ND filter NDF can be inserted therein, and can be detachably attached by a sliding method. Of course, it will be obvious to those skilled in the art that the ND filter (NDF) can be detached and attached in a manner other than the slide method.

4 is a cross-sectional view schematically showing the structure of a shutter glasses used in a three-dimensional image realization system according to a second embodiment of the present invention.

The three-dimensional image forming system according to the second embodiment is similar to the three-dimensional image forming system according to the first embodiment except for the structure of the shutter glasses. Therefore, the description of the same matters as in the first embodiment can be omitted.

Referring to FIG. 4, the shutter glasses 300 according to the second embodiment of the present invention may include an ND filter NDF located on the rear surface of the shutter lens SL, Can be configured to be removable.

As described above, according to the second embodiment of the present invention, since the ND filter NDF can be detachably attached to the shutter lens SL, the problem of flickering due to the surrounding environment can be solved.

That is, similarly to the first embodiment described above, under a high illuminance environment, by attaching the ND filter NDF to the back surface of the shutter lens SL, the illuminance level felt by the user can be lowered. This makes it possible to prevent a flicker phenomenon caused by a high illuminance environment.

In a general illumination environment where the flicker phenomenon is not noticeable, for example, in an indoor environment, the illumination is about 500 lux. In such an environment, flicker due to ambient light is not felt. Therefore, in the general illuminance environment, the ND filter NDF is detached from the shutter glasses 300, so that all the light output to the display device 200 can be incident.

As described above, in the first embodiment of the present invention, the shutter glasses 300 are provided so that the ND filter NDF can be selectively attached and detached to the back surface of each of the left eye shutter lens and the right eye shutter lens (see 310 and 320 in FIG. 1) Can be configured. This makes it possible to improve flicker occurring in a high illuminance environment.

On the other hand, one or more ND filters (NDFs) may be provided, and the user may select one of them to attach and detach the ND filter.

Various methods can be used as the detachment / attachment method. For example, an insertion port may be provided so that the ND filter NDF can be inserted into the spectacle frame (see 330 in FIG. 1), and can be attached and detached in a sliding manner. Of course, it will be obvious to those skilled in the art that the ND filter (NDF) can be detached and attached in a manner other than the slide method.

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.

300: shutter glasses 400: liquid crystal panel
410: first substrate 411: first electrode
420: second substrate 421: second electrode
430: second liquid crystal layer 440: third polarizer plate
450: fourth polarizer plate
NDF: ND filter
SL: Shutter lens

Claims (8)

A display device for alternately outputting a left eye image and a right eye image;
A left eye shutter lens that is in a transmission state in synchronism with the left eye image output, a right eye shutter lens that is in a transmission state in synchronization with the right eye image output, and a second lens which is detachably attached to the front surface or back surface of each of the left and right eye lens Shutter glasses including a neutral density filter
Dimensional image.
The method according to claim 1,
The left-eye shutter lens and the right-
A liquid crystal panel;
And first and second polarizing plates attached to the rear and front surfaces of the liquid crystal panel, respectively,
3D image implementation system.
The method according to claim 1,
The shutter glasses are driven at a frequency of 50 Hz or 60 Hz
3D image implementation system.
The method according to claim 1,
The ND filter is attached in an illuminance environment higher than 500 lux
3D image implementation system.
1. A shutter eyeglass used in a system for implementing a three-dimensional image through a left eye image and a right eye image output alternately from a display device,
A left eye shutter lens which is in a transmission state in synchronization with the left eye image output;
A right eye shutter lens which is in a transmission state in synchronization with the right eye image output;
A neutral density filter (ND) configured to be detachably attached to the front surface or the back surface of each of the left and right eye shutter lenses,
.
6. The method of claim 5,
The left-eye shutter lens and the right-
A liquid crystal panel;
And first and second polarizing plates attached to the rear and front surfaces of the liquid crystal panel, respectively,
Shutter glasses.
6. The method of claim 5,
The shutter glasses are driven at a frequency of 50 Hz or 60 Hz
Shutter glasses.
6. The method of claim 5,
The ND filter is attached in an illuminance environment higher than 500 lux
Shutter glasses.

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