KR101759540B1 - 3-dimensional displaying apparatus and driving method thereof - Google Patents

Abstract

The present invention relates to an image display panel including a plurality of pixels; And a backlight panel spaced apart from a surface of the image display panel, wherein the backlight panel includes a first set of linear light sources spaced apart from each other by a predetermined distance, And a second set of second light sources, wherein the first set of light sources and the second set of light sources operate alternately. Thus, when the horizontal position of the observer changes, the change in brightness of the image information and the crosstalk between the adjacent view zones can be minimized, and the inverse stereoscopic vision can be prevented. In addition, the non-uniformity of the brightness distribution within the viewing area can be solved.

Description

[0001] 3-DIMENSIONAL DISPLAYING APPARATUS AND DRIVING METHOD THEREOF [0002]

The present invention relates to a stereoscopic image display apparatus, and more particularly, to a stereoscopic image display apparatus in which a plurality of linear light sources are alternately driven to minimize a change in brightness of image information and crosstalk between adjacent viewing angles when a horizontal position of an observer changes , A stereoscopic image display device capable of preventing reverse stereoscopic vision, and a driving method thereof.

In recent years, there has been developed a display device capable of displaying a three-dimensional image in response to a demand of a user for a display device capable of realizing a three-dimensional image which can not be realized in a conventional two-dimensional image .

When a person looks at an object in the natural world, the three-dimensional feeling is because the viewing angle of both eyes is slightly different when striking an object with the left eye and the right eye. In this way, the image information of an object having a slightly different viewing angle is imaged on the retina through the right eye and the left eye, and the stereoscopic effect is felt in the process in which the imaged binocular information is transmitted to the brain through the optic nerve.

Specifically, a three-dimensional image is formed by the principle of stereoscopic vision through two eyes. Binocular disparity, which occurs due to the time difference between the two eyes, ie, the distance between the two eyes is about 65 mm, A display device capable of displaying stereoscopic images has been proposed. More specifically, the three-dimensional image is displayed on the left and right eyes of the display device. When these two images are transmitted to the brain through the retina, the brain fuses them exactly to reproduce the depth and the real feeling of the original three-dimensional image, and this phenomenon is usually referred to as stereography.

Meanwhile, in the conventional non-eyeglass type three-dimensional image display apparatus, the parallax separation means is arranged in front of the conventional two-dimensional image display device, and a three-dimensional stereoscopic image is provided by transmitting images of different parallaxes to the left and right eyes of the observer Thereby providing an observer with a realistic three-dimensional image. Parallax barrier plates and lenticular lens sheets are used as parallax separation means for providing a three-dimensional effect. An example of implementing a three-dimensional image using a parallax barrier plate as the time difference separating means is shown in Fig.

FIG. 1 shows the principle of implementation of a three-dimensional image information display apparatus of a 2-hour zone according to an embodiment of the related art. Referring to FIG. 1, a conventional 2D video image information display apparatus 100 includes a conventional two-dimensional image display panel 110 and a parallax barrier plate (not shown) 130). A pixel formed on the image display panel 110 is composed of a left eye image pixel 13 and a right eye image pixel 15. [ The parallax barrier plate 130 is composed of an open area and a barrier area. The image information emitted from the left eye image pixel 13 and the right eye image pixel 15 passes through the open area and does not pass through the barrier area. Thus, the image information that has passed through the open area is focused on the designed observation distance. On the other hand, only the image information of the left eye is observed at the A position, and only the image information of the right eye is observed at the B position among the positions of the observers at the designed observation distance.

However, there are various problems to be solved in the method of displaying the three-dimensional image through the parallax separation by the parallax barrier plate 130. First, for example, when the position of the eye moves horizontally, the left eye lies at the D position, and the right eye lies at the E position, the left eye image pixel 13 and the right eye image pixel 15) are simultaneously applied to the left eye and the right eye. As a result, a clear three-dimensional image can not be seen. This phenomenon is referred to as cross talk between the fields.

Secondly, when the observer's horizontal movement moves the left eye of the observer to the B position and the right eye lies to the C position, the left eye sees the image information emitted from the right eye image pixel 15, 13). ≪ / RTI > As a result, there arises a problem that the stereoscopic image is inverted and the normal three-dimensional stereoscopic image information can not be seen.

Third, there is a problem that the brightness of the image in the corresponding field of view is not uniform and the brightness of the image changes when the eye moves horizontally. This problem will be described in detail with reference to FIG.

FIG. 2 is a graph of a light distribution of a three-dimensional image by using a conventional time-division means. The horizontal axis represents the horizontal position at the observation distance, and the vertical axis represents the light intensity. Referring to FIG. 2, for example, when the eye moves horizontally to the right or left after the left eye and the right eye are located in the first view area (indicated by a solid line) and the second view area (indicated by a broken line) And the crosstalk problem mixed with the neighboring view area information occurs at the same time.

  Although the foregoing description has exemplified the case of using a parallax barrier plate as the time difference separating means, the same problem as described above arises when the lenticular lens sheet is used.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a stereoscopic image display apparatus capable of minimizing a change in brightness of image information and crosstalk between adjacent viewing zones, And a method of driving the stereoscopic image display apparatus.

According to an aspect of the present invention, there is provided a stereoscopic image display device including: an image display panel including a plurality of pixels; And a backlight panel spaced apart from a surface of the image display panel, wherein the backlight panel includes a plurality of linear light sources spaced apart from each other by a predetermined distance, and each of the linear light sources has a width Is less than 30% (0 is not included).

In this case, the width of the linear light sources of the first or the second linear light source sets may be 25% or less (not including 0) with respect to the pitch of the pixels.

In addition, the optical circulators may be a self light emitting type light source including any one of LED, OLED, and FED, and may include a light source such as a planar light source or a laser, and an optical element (such as a lenticular lens) Type light source that can produce a linear light source by using the light source of the present invention.

According to another aspect of the present invention, there is provided a stereoscopic image display device including: an image display panel including a plurality of pixels; And a backlight panel spaced apart from a surface of the image display panel, wherein the backlight panel includes a first ray source set including a plurality of ray sources disposed at a predetermined distance from each other; And a second set of linear light sources, each of the linear light sources being spaced apart from each other by a predetermined distance from each of the linear light sources of the first set of linear light sources.

Here, it is preferable that the width of each of the linear light sources of the first and second linear light sources is less than 30% (not including 0) as compared with the pitch of the pixels.

The three-dimensional image display device according to claim 1, wherein the width of each of the first and second linear light sources is 25% or less (zero) in relation to the pitch of the pixels.

It is preferable that an interval between the first light source of the first set of light sources and an interval between the first light sources of the second set of the first light source are the same.

In this case, it is preferable that the adjacent distance between the first and the second light source sets is 1/4 of the interval between the first and second light source sets.

According to another aspect of the present invention, there is provided a stereoscopic image display device including: an image display panel including a plurality of pixels; A backlight panel spaced apart from one surface of the image display panel; And a pupil tracking unit for tracking the position of the pupil of the observer and feeding back the pupil to the backlight panel, wherein the backlight panel includes a first set of linear light sources including a plurality of linear light sources disposed at a predetermined distance from each other, And a second set of linear light sources, each of which is composed of linear light sources spaced apart from the respective linear light sources of the set of linear light sources, the set of the first linear light sources and the set of the second linear light sources including the positions And is driven alternately according to the control signal.

Wherein the backlight panel further includes a third set of ninth ray light sources to nth ray source sets (n is an integer of 4 or more), and the first to nth ray source sets are sequentially disposed adjacent to each other at regular intervals , Only some of the light sources of the first to nth ray source sets can be selectively driven according to the position of the fed pupil.

Also, the first and second light source sets may be arranged to be inclined with respect to the arrangement of the pixels.

The stereoscopic image display apparatus may further include a diffusion panel formed between the backlight panel and the image display panel and diffusing or transmitting light emitted from the linear light source according to whether a voltage is applied.

Here, the diffusion panel may be a polymer dispersed liquid crystal (PDLC).

According to another aspect of the present invention, there is provided a method of driving a stereoscopic image display apparatus, comprising: (a) passing light emitted from a first or second set of linear light sources formed on a backlight panel through pixels of an image display panel, Forming a plurality of view areas at distanced positions; (b) tracing a position of a pupil of an observer in a pupil tracing unit and feeding back the position of the traced pupil to the backlit panel; (c) turning the first or second light source set so that the central portion of the field of view is located at the position of the fed pupil.

Here, the width of the linear light sources of the first or the second linear light source sets may be less than 30% (not including 0) with respect to the pitch of the pixels.

In addition, the width of the linear light sources of the first or the second linear light source sets may be 25% or less (not including 0) with respect to the pitch of the pixels.

Particularly, the method for driving the stereoscopic image display device may further include the step of (d) diffusing or transmitting light emitted from the linear light source according to whether a voltage is applied in a diffusion panel between the backlight panel and the image display panel have.

According to the present invention, when the horizontal position of the observer changes, the brightness change of the image information and the crosstalk between the adjacent viewing zones can be minimized, and the inverse stereoscopic vision can be prevented. In addition, the non-uniformity of the brightness distribution within the viewing area can be solved.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing the principle of implementation of a three-dimensional image display apparatus using a conventional parallax barrier plate; Fig.
FIG. 2 is a graph of a light distribution of a three-dimensional image by using a conventional time division means. FIG.
3 is a top view of an autostereoscopic display using a line source according to the first embodiment of the present invention.
4 is a graph showing a shape of a view area according to a line width of a ray source according to the first embodiment of the present invention.
5 is a graph showing the relationship between the line width of the line source with respect to the pixel pitch and the field of view having uniform brightness in the entire region according to the first embodiment of the present invention
6. FIG. 6 is a conceptual diagram showing a relationship between a change in a time-of-field and a stereoscopic image when horizontally moving at an observation position according to the first embodiment of the present invention.
7 is a top view of a stereoscopic image display apparatus using a plurality of linear light sources according to a second embodiment of the present invention.
8 is a front view of a stereoscopic image display apparatus including a pupil tracing unit according to a second embodiment of the present invention.
9 is a conceptual diagram showing a basic principle of driving a stereoscopic image display device according to a second embodiment of the present invention;
10 and 11 are enlarged front views of a stereoscopic image display device according to a third embodiment of the present invention.
12 is a structural view of a stereoscopic image display apparatus according to a fourth embodiment of the present invention.

Hereinafter, a stereoscopic image display apparatus and a driving method thereof according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail to avoid unnecessarily obscuring the subject matter of the present invention.

In addition, the size of each component in the drawings may be exaggerated for the sake of explanation and does not mean a size actually applied.

My 1 Embodiment

3 is a configuration diagram of an autostereoscopic display using a line source according to the first embodiment of the present invention. 3, the present invention includes an image display panel 210 displaying information of 2 o'clock or more and a plurality of linear light sources spaced apart from a back surface of the image display panel 210 And a backlight panel 211 including a backlight unit 30 (hereinafter referred to as a backlight panel). The light sources of the plurality of first light source sets 30 of the backlight panel 211 are spaced apart from each other by a predetermined distance so that the viewing area is separated from the observation position 150 in which image information formed on the image display panel 210 is designed . FIG. 3 illustrates a concept of separating a left seat area (first sight area) and a second sight area (second sight area) from an observation position 150 designed for the 2 o'clock image information as an example of the present invention.

The size E of each of the viewing areas is usually 65 mm, which is the average distance between people's eyes, but it can be set smaller than the average distance between eyes in the viewing area of 2 hours or more. For example, in order to properly view the 2 o'clock-view image at the observation position 150, the observation distance Lo, the size E of each view area, and the first set of ray sources 30, which are designed from the image display panel 210, The relationship between the distance d between the backlight panel 211 and the image display panel 210, the pitch Wp of the pixels of the image display panel 210, and the distance Ls between adjacent light sources is ideally expressed by the following two equations .

Equations (1) and (2) do not consider materials coated on the upper and lower substrates of the image display panel 210 or the first set of linear light sources 30 of the backlight panel 211. Therefore, a calibrated relational expression should be used for the design to form the actual field of view.

The problem of the crosstalk between the adjacent viewing areas and the luminance uniformity within the viewing area remains unchanged, as in the case of the viewing area formed by the conventional parallax separating means, even if the viewing area is formed by the design according to the relational expression . (See Fig. 2)

In order to solve this problem, the present invention reduces the line width W _LS of the linear light source to a certain ratio or less of the pixel pitch Wp of the image display panel 210.

The characteristics of the change in the viewing range according to the line width (W _LS ) of the line source are shown in FIGS. 4 and 5. 4 and 5 are simulation results using an image display panel and an observation distance d = 2 mm, Lo = 1000 mm, E = 65 mm, and Wp = 0.265 mm using Lighttools (ORA) . The upper graph of FIG. 4 shows a case where the line width W _LS of the linear light source with respect to the pixel pitch Wp of the image display panel 210 is 30%. In this case, the field of view has a similar shape to the field of view formed using conventional parallax barriers. Meanwhile, the lower graph of FIG. 4 shows a case where the line width W _LS of the linear light source is 15% of the pixel pitch Wp of the image display panel 210. In this case, it can be confirmed that the ratio of the uniform view range range in the entire view range is about 50%.

FIG. 5 is a graph showing the relationship between the line width of the line source with respect to the pixel pitch and the viewing area having uniform brightness in the entire area. The abscissa of the graph represents the line width (W _LS ) of the line light source divided by the pixel pitch (Wp), and the ordinate represents the ratio (%) of the uniform view area occupied by the entire view area. From the simulation results, it can be seen that as the line width (W _LS ) of the line source with respect to the pixel pitch (Wp) is smaller, a uniform view range is widened and an ideal uniform view range is formed. However, it is preferable that the line width W _LS of the linear light source is 25% or less (W _LS / Wp? 0.25) of the pixel pitch Wp in consideration of technical problems such as light efficiency and formation of a light source.

Fig. 6 shows a viewport distribution of an image when the line width of the line light source is set smaller than a certain range of the pixel pitch in the structure shown in Fig. 3. Fig. This figure is a case in which two viewing zones are formed. In this case, when the observer horizontally moves at the designed observation distance Lo, the L view field information corresponding to the left eye and the R view field information corresponding to the right eye are successively arranged. As a result, it is possible to see a uniform three-dimensional image as long as the left eye is in the L viewing area and the right eye is in the R viewing area at the observer's eye position. However, when the observer moves beyond the range of the corresponding field of view, for example, when the observer's left eye is located in the R view area where the right image is shown and the right eye is located in the L view area where the left image is viewed, The problem of seeing still remains.

Further, when the left eye and the right eye of the observer are located outside a uniform area in the field of view, there is a problem that crosstalk occurs in which the image brightness of the image decreases and an image of the adjacent view area enters.

Meanwhile, the image display panel used in the present invention may be a flat panel display such as a liquid crystal panel (LCP), which displays an image by adjusting the transmittance of a backlight. The linear light source used in the present invention may be any light source capable of forming a linear light source such as a self light emitting type light source such as an LED (Light Emitting Diode), an OLED (Organic Light Emitting Diode), or an FED Available. In addition, it may be a light-receiving type light source that can make a linear light source by using an optical element (lenticular lens or the like) capable of converting a light source such as a planar light source or a laser to a linear light source.

My 2 Embodiment

In the first embodiment described above, it is possible to observe a stereoscopic image in which the brightness is uniform within a certain range when the eye moves horizontally within the corresponding view area, but the inverse stereoscopic and crosstalk problems can not be completely eliminated at the time of moving between the time zones . The second embodiment of the present invention is intended to solve the problems of the first embodiment. In addition, the uniformity of the luminance can be adjusted by directly applying the definition of the width of the linear light source described in the first embodiment to the structure of the second embodiment.

7 is a configuration diagram of a stereoscopic image display apparatus using a plurality of linear light sources according to the present invention. Referring to FIG. 7, like the first embodiment of the present invention, a backlight 211 is disposed on the back surface of the image display panel 210, spaced apart from each other by a predetermined distance, However, the second embodiment of the present invention further includes the second luminous flux circle set 50 of the first embodiment as well as the second luminous flux circle set 30 of the first embodiment. It is preferable that the distance Ls between the light sources of the second light source set 50 is equal to the distance between the light sources of the first light source set 30. In addition, the ray source of the first ray source set 30 and the ray source of the second ray source set 50 adjacent thereto are spaced apart by a predetermined distance W _L12 . In the two-view zone forming stereoscopic image display apparatus, it is preferable that the separation distance W _{L12 be} ¼ of the interval L _S between the light sources in the respective light source sets.

Although two sets of linear light sources are shown in this drawing, three or more sets of linear light sources, that is, n sets of linear light sources (where n is an integer of 3 or more) may be implemented in the backlight panel 211. In this case, the stereoscopic image display apparatus can be realized by reducing the distance between the light source units of each light source set in inverse proportion to n. In this embodiment, the basic concept of the present invention will be described based on the simplest two-view stereoscopic image display device. FIG. 7 is a conceptual diagram of a stereoscopic image display apparatus including two viewing zones. The distance W _L12 between the first and second light source sets 30 and 50 is spaced apart from each other (L _S ). In this case, when the first ray source set 30 is turned on and the second ray source set 50 is turned off, the viewing areas E1 _R and E1 _L are formed at the observation position 150. On the other hand, when the first ray source set 30 is turned off and the second ray source set 50 is turned on, the viewing areas E2 _R and E2 _L are formed at the observation position 150. In particular, the present embodiment further includes a pupil tracing unit capable of feeding back the position of the observer's eye. As a result, according to the present invention, the first ray source set 30 or the second ray source set 50 can be selectively driven according to the position of the observer's eye, and a three-dimensional stereoscopic image without reverse stereoscopic image or crosstalk can be observed . A more detailed description thereof will be described with reference to the drawings shown in Figs. 8 and 9. Fig.

8 is a front view of a stereoscopic image display apparatus including a pupil tracing unit according to a second embodiment of the present invention. 8, a stereoscopic image display device 200 including a backlight panel 211 including a first set of linear light sources 30 and a second set of linear light sources 50, and an image display panel 210, And a pupil tracing unit 270 for tracking the position of the eye of the user. When the image display panel is enlarged from the front, as shown in the right side, the first set of linear light sources 30 and the set of second set of linear light sources 50 are located on the rear surface of the pixel 10, Between the pixels 10, a black matrix 20 is formed. Meanwhile, the pupil tracing unit 270 may be provided in the image display panel 210, or separately. However, the pupil tracer 270 must be directly or indirectly connected to the backlight panel 211 to drive the backlight panel 211 based on the position of the traced pupil.

9 is a conceptual diagram illustrating a basic principle of driving a stereoscopic image display apparatus according to a second embodiment of the present invention. If the observer is able left eye from an observation position is E1 _L, the right eye is in the viewing area intermediate region of E1 _R, the turn-on only one linear light source set 30 and the second linear light source set 50 is in a turned off state The backlight panel 211 is driven. As a result, the observer can observe clear stereoscopic images. On the other hand, when the observer horizontally moves from the observation position to the right, the pupil tracking section tracks the position of the observer's eye in real time and feeds back the tracked position to the backlight panel 211. On the basis of this feedback result, the backlight panel turns off the first ray source set 30 before the observer reaches the boundary or brightness of the field of view formed by the first ray source set 30, , And turns on the second set of linear light sources 50. As a result, even if the observer moves beyond the range of the corresponding view area, the three-dimensional stereoscopic image can be seen without suffering the inverse stereoscopic effect, cross-talk between adjacent scenes, and unevenness of image brightness.

In this embodiment, for example, the operation principle is shown as the simplest 2-o'clock stereoscopic image, but the same concept can be applied to the inverse 3-dimensional image beyond 2 o'clock.

My 3 Example

10 and 11 are enlarged front views of a stereoscopic image display apparatus according to a third embodiment of the present invention. The pixels shown in Figs. 8 and 9 are typically composed of red (R), green (G), and blue (B) sub pixels to implement a color image display device. The arrangement of the set of vertical ray sources shown in Figs. 8 and 9 is the same as the arrangement of the first and second ray sources R, G, and B in the pixel 10, The sets 30 and 50 are all arranged vertically. Thus, when one of the first or second luminous source sets 30 or 50 is operated, the light emitted from the active luminous source set passes through all of the sub-pixels R, G, and B for each pixel . As a result, there is no problem in color implementation in the process of separating the field of view.

However, as shown in the right side of FIG. 11, when the sub pixels R, G, and B are arranged horizontally, the color stereoscopic image can not be properly implemented. This is because the light emitted from the vertically arranged linear light sources passes through the R, G, and B sub-pixels occupying different horizontally different positions in one pixel and is shifted to a horizontal position in each of the sub- This is because color separation effect is generated. For example, in accordance with the movement of the horizontal position, only sub-pixels of some of R, G. and B can be observed within each view area. Therefore, there is a problem that an accurate color image can not be seen.

In order to prevent such a problem, the first and second linear light sources are arranged so as to be inclined with respect to the pixel arrangement. In addition, the degree of inclination is formed such that the first and second luminous circles are equally matched with the sub-pixels R, G, and B, as shown in the figure. In this case, the position of the pupil of the observer is fed back to the backlight panel by the above-described pupil tracing unit 270, and the pupil position of the pupil of the observer is set to the first set of the first light source 30 and the set of the second light source 50 One set of linear light sources is operated. Or a third set of linear light sources is included, a set of linear light sources that are part of the entire set of linear light sources are operated. As a result, the observer does not experience reverse skew or crosstalk during horizontal movement, and can observe a stereoscopic image in which accurate color is realized.

My 4 Example

11 is a structural view of a stereoscopic image display apparatus according to a third embodiment of the present invention. Referring to FIG. 3, the third embodiment of the present invention is a structure in which the diffusion panel is further included in the stereoscopic image display apparatus shown in the first embodiment or the second embodiment. Specifically, the diffusion panel 230 is formed between the backlight panel 211 and the image display panel 210. A transparent electrode 231 is formed on both sides of the diffusion panel 230 so that the diffusion panel 230 is turned on or off as current is applied to the transparent electrode 231. For example, when current is applied to the transparent electrode 231, the light of the linear light source emitted from the backlight panel 211 is diffused, and a normal two-dimensional image can be seen. When the current is not applied to the transparent electrode 231, the three-dimensional stereoscopic image can be seen by the view-and-sky separation according to the arrangement of the respective light source sets 30 and 50 of the backlight panel 211. In contrast to this, a three-dimensional image may be implemented when a voltage is applied, and a two-dimensional image may be implemented when a voltage is not applied. This depends on the initial layout of the cells inside the diffuser plate.

As such, the PDLC (Polymer Dispersed Liquid Crystal) is used as the diffusion panel 230 that is electrically controlled. The PDLC can act as a diffusion panel depending on whether the transparent electrodes on both sides are electrically energized, according to the initial alignment state. On the other hand, an optical element whose electrical diffusivity is controlled in addition to the PDLC can be used as an embodiment of the present invention.

In the foregoing detailed description of the present invention, specific examples have been described. However, various modifications are possible within the scope of the present invention. The technical spirit of the present invention should not be limited to the above-described embodiments of the present invention, but should be determined by the claims and equivalents thereof.

10: Pixel 13: Left eye image pixel
15: Right eye image pixel 20: BM part (Black Matrix)
30: 1st ray source set 50: 2nd ray source set
100, 200, 300: stereoscopic image display device 150: observation position
210: image display panel 211: backlight panel
270: pupil tracking unit

Claims (16)

An image display panel including a plurality of pixels; And
And a backlight panel spaced apart from one surface of the image display panel,
Wherein the backlight panel includes a plurality of linear light sources arranged to be driven at the same time, wherein each of the plurality of linear light sources generates a stereoscopic view field including a left station and a right station,
Wherein the width of each of the plurality of linear light sources is less than 25% and greater than 0% of the pitch of all of the plurality of pixels, and the plurality of linear light sources are arranged such that each of the linear light sources, Gt; of pixels < / RTI >
Stereoscopic image display device.
The method according to claim 1,
The stereoscopic image display device includes:
30% or more of the entire area is formed as an area having uniform light intensity in the field of view formed by the backlight panel and the image display panel,
Wherein the optical circulators are a light emitting type light source having a light emitting type light source including LED, OLED, and FED, or another light source including a planar light source and an optical element for converting the other light source into a linear light source Stereoscopic image display device.
An image display panel including a plurality of pixels; And
And a backlight panel spaced apart from one surface of the image display panel,
The backlight panel includes:
A first luminous source set including a plurality of luminous sources disposed at regular intervals from each other and providing a first stereoscopic viewing zone including a first left station and a first right station; And
And a second set of luminous sources that include second luminous sources disposed at a predetermined distance from the first luminous source set of the first luminous source and provide a second luminous visual field including a second left station and a second right station, In addition,
The first set of the first light source and the second set of the second light source are driven at different times,
Wherein a width of each of the first and second sets of light source groups is less than 25% and greater than 0% of a pitch of one of the plurality of pixels, Spaced apart to provide light to one or more of the plurality of pixels in the same row of the image display panel,
Stereoscopic image display device.
The method of claim 3,
And provides the first stereoscopic vision zone or the second stereoscopic vision zone to the observer according to the movement of the observer.
delete The method of claim 3,
And the interval between the light source of the first light source and the distance between the light sources of the second light source is the same.
The method according to claim 6,
Wherein the adjacent distance between the first and second light source sets is one fourth of a distance between the light sources of the first and second light sources.
An image display panel including a plurality of pixels;
A backlight panel spaced apart from one surface of the image display panel; And
And a pupil tracking unit for tracking the position of the pupil of the observer and feeding back the position to the backlight panel,
The backlight panel includes:
A first luminous source set including a plurality of luminous sources disposed at regular intervals and providing a first stereoscopic viewing zone including a first left station and a first right station,
A second luminous source set including a luminous source disposed at a predetermined distance from each of the luminous sources of the first luminous source and providing a second luminous visual field including a second luminous source station and a second woofer station, ≪ / RTI &
Wherein the first stereoscopic vision zone or the second stereoscopic vision zone is selectively driven at different points in time according to the position of the fed pupil to provide the first stereoscopic vision zone or the second stereoscopic vision zone to the observer according to the movement of the observer,
Wherein each width of the linear light sources of the first and second linear light source sets is less than 25% and greater than 0% of one pitch of the plurality of pixels, Wherein the plurality of optical circulators are spaced apart to provide light to at least one of the plurality of pixels in the same row of the stereoscopic image display device.
9. The method of claim 8,
Wherein the backlight panel further comprises third to nth ray source sets (n is an integer of 4 or more), and the first to nth ray source sets are sequentially arranged adjacent to each other at regular intervals And,
And only some of the light sources of the first to nth light source sets are selectively driven according to the position of the fed pupil.
9. The method of claim 8,
Wherein the first and second light source sets are arranged to be inclined with respect to the arrangement of the pixels.
9. The method of claim 8,
The stereoscopic image display device includes:
A backlight panel disposed between the backlight panel and the image display panel,
And a diffusion panel for diffusing or transmitting light emitted from the linear light source according to whether a voltage is applied or not.
12. The method of claim 11,
Wherein the diffusion panel is a Polymer Dispersed Liquid Crystal (PDLC).
The light emitted from the first or second light source set formed on the backlight panel passes through the pixels of the image display panel and is emitted from the image display panel at a position spaced from the image display panel by a predetermined distance Forming a second stereoscopic viewing field which is spaced apart from the first stereoscopic viewing zone by the first stereoscopic viewing zone or the second set of second luminous intensity sources;
Tracing the position of the pupil of the observer and feeding back the position of the traced pupil to the backlight panel in the pupil tracing unit; And
And selectively driving the first or second set of linear light sources at different points of time so that the first stereoscopic vision zone or the second stereoscopic vision zone is positioned at the position of the fed pupil,
Wherein the widths of the respective light sources of the first and second sets of light sources are less than 25% and greater than 0% of a pitch of one of the plurality of pixels, Wherein the plurality of optical sources are spaced apart to provide light to at least one of the plurality of pixels in the array.
Wherein the stereoscopic image display device is a stereoscopic image display device.
14. The method of claim 13,
Wherein the width of the light source of the first or the second set of light sources is less than 30% of the pitch of the pixels.
15. The method of claim 14,
Wherein the width of the light source of the first or the second set of light sources is 25% or less (not including 0) with respect to the pitch of the pixels.
14. The method of claim 13,
A method of driving a stereoscopic image display device,
Further comprising diffusing or transmitting light emitted from a source of light according to whether a voltage is applied in a diffusion panel between the backlight panel and the image display panel.

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