KR20210083976A - Display device for personal immersion apparatus - Google Patents

Abstract

The present invention relates to a personal immersive device display device capable of removing dizziness. The personal immersive device display device comprises: a first display panel on which a first input image is displayed; a second display panel on which a second input image is displayed in combination with the first input image to realize a stereoscopic image, the second display panel being disposed adjacent to the first display panel; a first lens module disposed to correspond to the first display panel; and a second lens module disposed to correspond to the second display panel. Each of the first and second lens modules operates as a convex lens, a concave lens, or a flat lens according to the information of the first and second input images respectively supplied to the first and second display panels.

Description

DISPLAY DEVICE FOR PERSONAL IMMERSION APPARATUS

The present specification relates to a display device of a personal immersive device that implements virtual reality or augmented reality.

Virtual reality or augmented reality technology (hereinafter simply referred to as “virtual reality”) is being applied to defense, architecture, tourism, film, multimedia, game fields, and the like. Virtual reality refers to a specific environment or situation that feels similar to the real environment using stereoscopic image technology.

In order to maximize the sense of immersion in virtual reality, virtual reality technology is applied to personal immersive devices. As such a personal immersive device, a head mounted display (HMD), a face mounted display (FMD), an eye glasses-type display (EGD), and the like are known.

Because personal immersive devices are typically implemented as being worn on the face or head, the distance between the screen and the eyes is very close. For this reason, there is a problem of causing dizziness because there is a difference between the convergence distance of both eyes where the stereoscopic image converges and the focal length between the object and the monocular in the image.

An object of the present specification is to provide a display device for a personal immersive device without dizziness.

A display device according to the present specification for achieving the above object is a display device of a personal immersive device, comprising: a first display panel on which a first input image is displayed; a second display panel on which a second input image is displayed in combination with the first input image to realize a stereoscopic image, the second display panel being disposed adjacent to the first display panel; a first lens module disposed to correspond to the first display panel; and a second lens module disposed to correspond to the second display panel, wherein each of the first and second lens modules is configured to capture first and second input images supplied to the first and second display panels, respectively. Depending on the information, it can operate as a convex lens, a concave lens or a flat lens.

According to the display device of the personal immersive device according to the present specification, the concave lens according to the voltage supplied from the first and second power supply units to the first focus adjusting unit of the first lens module and the second focus adjusting unit of the second lens module Alternatively, it is possible to obtain the effect of preventing dizziness due to the difference between the focal length and the convergence distance by operating as a convex lens so that there is no difference between the focal length and the convergence distance.

1 is an exploded perspective view showing a personal immersive device according to an embodiment of the present specification;
2 is a block diagram schematically showing a lens module and a display module shown in FIG. 1;
3 is a diagram for conceptually explaining an example of a case in which a stereoscopic image is implemented between a display screen and both eyes;
4 is a block diagram showing the lens module shown in FIG. 2 in detail;
5 is a cross-sectional view illustrating first and second focus adjustment units of the lens module shown in FIG. 4;
Figure 6a is a cross-sectional view showing a first example of the operating state of the first and second focus adjustment unit of the lens module according to the embodiment of the present specification;
Figure 6b is a cross-sectional view showing a second example of the operating state of the first and second focus control unit of the lens module according to the embodiment of the present specification;
Figure 6c is a cross-sectional view showing a third example of the operating state of the first and second focus control unit of the lens module according to the embodiment of the present specification;
7A is a diagram illustrating an example of a case in which a stereoscopic image image is recognized as being positioned between a focus control unit and a display screen in a display device according to an embodiment of the present specification;
7B is a diagram illustrating an example of a case in which a stereoscopic image image is recognized as being located outside a focus control unit in a display device according to an embodiment of the present specification;
8 is a flowchart illustrating an image implementation method in the case of classifying positions of objects located on a display screen according to focal lengths and setting the number of images to three in a display device according to an embodiment of the present specification;

Advantages and features of the present specification and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present specification is not limited to the embodiments disclosed below, but will be implemented in various different forms, only these embodiments allow the disclosure of the present specification to be complete, and common knowledge in the technical field to which this specification belongs It is provided to fully inform the possessor of the scope of the invention, and this specification is only defined by the scope of the claims.

The shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present specification are illustrative and the present specification is not limited to the illustrated matters. Like reference numerals refer to like elements throughout. In addition, in the description of the present specification, if it is determined that a detailed description of a related known technology may unnecessarily obscure the subject matter of the present specification, the detailed description thereof will be omitted.

When 'including', 'having', 'consisting', etc. mentioned in this specification are used, other parts may be added unless 'only' is used. When a component is expressed in the singular, the case in which the plural is included is included unless otherwise explicitly stated.

In interpreting the components, it is interpreted as including an error range even if there is no separate explicit description.

In the case of a description of the positional relationship, for example, when the positional relationship of two parts is described as 'on', 'on', 'on', 'beside', etc., 'right' Alternatively, one or more other parts may be positioned between the two parts unless 'directly' is used.

In the case of a description of a temporal relationship, for example, 'immediately' or 'directly' when a temporal relationship is described with 'after', 'following', 'after', 'before', etc. It may include cases that are not continuous unless this is used.

Although the first, second, etc. are used to describe various components, these components are not limited by these terms. These terms are only used to distinguish one component from another. Accordingly, the first component mentioned below may be the second component within the spirit of the present specification.

"X-axis direction", "Y-axis direction", and "Z-axis direction" should not be construed only as a geometric relationship in which the relationship between each other is vertical, and the composition of the present specification is wider within the range where it can function functionally. It may mean having a direction.

The term “at least one” should be understood to include all possible combinations from one or more related items. For example, the meaning of "at least one of the first, second, and third items" means 2 of the first, second, and third items as well as each of the first, second, or third items. It may mean a combination of all items that can be presented from more than one.

Each feature of the various embodiments of the present specification may be partially or wholly combined or combined with each other, technically various interlocking and driving are possible, and each of the embodiments may be independently implemented with respect to each other or may be implemented together in a related relationship. may be

Hereinafter, a display device according to an exemplary embodiment of the present specification will be described with reference to FIGS. 1 to 4 .

1 is an exploded perspective view showing a personal immersive device according to an embodiment of the present specification. FIG. 2 is a block diagram schematically illustrating a lens module and a display module shown in FIG. 1 . 3 is a diagram for conceptually explaining an example of a case in which a stereoscopic image is implemented between a display screen and both eyes. FIG. 4 is a block diagram specifically illustrating the lens module shown in FIG. 2 . FIG. 5 is a cross-sectional view illustrating first and second focus adjustment units of the lens module shown in FIG. 4 .

Referring to FIG. 1 , the personal immersive device of the present invention includes a lens module 12 , a display module 13 , a main board 14 , a head gear 11 , a side frame 15 , and a front cover. (front cover) 16 and the like.

2 and 4 , the display module 13 includes a display panel driving circuit for driving each of the two display panels PNL1 and PNL2 and displays an input image received from the main board 14 . . The display panels PNL1 and PNL2 are divided into a first display panel PNL1 viewed through the user's first side and a second display panel PNL2 viewed through the user's second side. The display module 13 displays image data input from the main board on the display panels PNL1 and PNL2. The image data may be 2D/3D image data that implements a video image of virtual reality (VR) or augmented reality (AR). The display module 13 may display various types of information input from the main board in the form of text, symbols, images, and the like.

The lens module 12 includes an ultra-wide-angle lens for widening the angle of view of both eyes (left and right eyes) of the user, that is, a pair of fisheye lenses and a pair of focus adjustment units FC1 corresponding to the pair of fisheye lenses. , FC2). The pair of fisheye lenses includes a first eye lens disposed in front of the first display panel PNL1 and a second eye lens disposed in front of the second display panel PNL2 . The pair of focus adjusting units includes a first focus adjusting unit FC1 disposed in front of the first ophthalmic lens and a second focus adjusting unit FC2 disposed in front of the second ophthalmic lens. A pair of fisheye lenses included in the lens module 12 may be omitted. When the lens module 12 includes a pair of fisheye lenses, the first and second focus adjustment units may be manufactured as separate components and then attached to the pair of fisheye lenses and the display module 13 in a module format. . When a pair of fisheye lenses is omitted from the lens module 12 , the first and second focus adjustment units FC1 and FC2 may be positioned instead of the pair of fisheye lenses.

The main board 14 includes a processor that executes virtual reality software and supplies the first eye input image and the second eye input image to the display module 13 . In addition, the main board 14 further includes an interface module connected to an external device, a sensor module, and the like. The interface module is connected to an external device through an interface such as USB (Universal Serial Bus) or HDMI (High Definition 　 Multimedia Interface). The sensor module includes various sensors such as a gyro sensor and an acceleration sensor. The processor of the main board 14 corrects the first eye image data and the second eye image data in response to the output signal of the sensor module, and displays the left eye and right eye image data of the input image received through the interface module to the display module 13 . send to The processor may generate first eye image data and second eye image data suitable for the resolution of the display panel based on the result of analyzing the depth information of the 2D image, and transmit the generated first eye image data and second eye image data to the display module 13 .

The head gear 11 includes a back cover exposing the lenses, and a band connected to the back cover. The back cover, the side frame 15 and the front cover 16 of the head gear 11 are assembled to secure an internal space in which the components of the personal immersive device are arranged and protect the components. The components include a lens module 12 , a display module 13 , and a main board 14 . The band is connected to the back cover. Users wear their personal immersive device on their head with a band. When the user puts the personal immersive device on his head, he sees different display panels through the lenses into the first eye and the second eye.

The side frame 15 is fixed between the head gear 11 and the front cover 16 to secure a gap in the inner space in which the lens module 12, the display module 13, and the main board 14 are disposed. do. A front cover 16 is disposed on the front of the personal immersive device.

The personal immersive device of the present specification may be implemented as a head mounted display (HMD) structure as shown in FIG. 1 , but is not limited to FIG. 1 . For example, the present invention may be designed as an EGD (Eye Glasses-type Display) having a glasses structure.

Referring to FIG. 2 , each of the first and second display panels PNL1 and PNL2 is an organic light emitting diode (OLED) having a fast response speed, excellent color reproduction characteristics, and a wide viewing angle characteristic. ) can be implemented as a display panel. In the case of EGD, the display panels PNL1 and PNL2 may be implemented as a transparent OLED display panel.

The first and second display panels PNL1 and PNL2 are separately manufactured and disposed to be spaced apart from each other on the display module 13 . At least a portion of a display panel driving circuit may be disposed between the first and second display panels PNL1 and PNL2 . In FIG. 2 , DIC1 and DIC2 represent a drive integrated circuit, which is an IC chip in which a timing controller and a data driver are integrated. GIP1 and GIP2 indicate a gate in panel, and a circuit in which a gate driver is integrated together with a pixel array on a substrate.

The pixel array AA of each of the first and second display panels PNL1 and PNL2 has a landscape in which the length in the horizontal direction (x) is longer than the length in the vertical direction (y) in consideration of the vertical viewing angle and the left and right viewing angles. type has an aspect ratio. In a personal immersive device, the viewing angle improvement effect is greater when the left and right viewing angles are wider than the vertical viewing angles. In the present specification, each of the first and second display panels PNL1 and PNL2 is manufactured as a landscape type OLED display panel in order to maximize the left and right viewing angles in the personal immersive device.

In the aspect ratio of the landscape type, the number of pixels in the horizontal direction (x) is greater than the number of pixels in the vertical direction (y), and the length in the horizontal direction (x) is longer than the length in the vertical direction (y). On the other hand, in the aspect ratio of the portrait type, the number of pixels in the vertical direction (y) is greater than the number of pixels in the horizontal direction (x), and the length in the vertical direction (y) is longer than the length in the horizontal direction (x).

The first and second display panels PNL1 and PNL2 may be manufactured on separate substrates and disposed separately on the display module 13 . As another embodiment, the first and second display panels PNL1 and PNL2 may be pixel arrays AA separated on the same substrate. In this case, the first display panel PNL1 has the same meaning as the first pixel array AA on which the first eye image is displayed, and the second display panel PNL2 has the same meaning as the second pixel array AA on which the second eye image is displayed. AA) has the same meaning.

In the personal immersive device, the lens module 12 including the fisheye lenses LEN1 and LEN2 and the lens modules FC1 and FC2 exists between the user's eyes and the display panel, and the distance between the user's eyes and the display panel is It is very short, about a few centimeters. In the present specification, by using the first and second focus adjustment units FC1 and FC2 of the lens module 12 to match the focal length determined by the monocular (ie, the left eye or the right eye) and the convergence distance determined by both eyes, , it is possible to obtain the effect of preventing dizziness when viewing a stereoscopic image due to the mismatch between the focal length of the monocular and the convergence distance of both eyes.

Hereinafter, with reference to FIGS. 3 to 5, the lens module 12 according to the embodiment of the present specification that can match the convergence distance and the focal length will be described in more detail.

First, referring to FIG. 3 , PD indicates the distance between the pupil of the first eye (eg, the left eye) LE and the pupil of the second eye (eg, the right eye) RE. FD is the distance between the left eye LE and the left eye image displayed on the first display panel of the display screen DS or the distance between the right eye RE and the right eye image displayed on the second display panel of the display screen DS Hereinafter, referred to as a focal length (FD). VD represents the distance from the left eye (LE) or right eye (RE) to the position where the left eye image (LI) and the right eye image (RI) are combined to form a stereoscopic image (3D), hereinafter referred to as the convergence distance (VD) .

3, in the case of a general stereoscopic image display device, the focal length FD of the monocular (LE or RE) and the convergence distance (VD) of both eyes (LE, RE) do not match. When dizziness occurs. 3 shows an example in which the convergence distance VD is located between the display screen DS and both eyes LE and RE, but even when the convergence distance VD is located behind the display screen DS The same is true.

A lens module 12 according to an embodiment of the present specification capable of preventing dizziness as described above when viewing a stereoscopic image will be described in detail with reference to FIGS. 4 and 5 .

4 and 5 , in the lens module 12 according to the embodiment of the present specification, the first lens module 12a and the second display panel PNL2 are disposed to correspond to the first display panel PNL1. It may include a second lens module (12b) disposed to correspond to.

The first lens module 12a may include a first focus control unit FC1.

The first focus control unit FC1 includes a first transparent substrate SUB1 and a second transparent substrate SUB2 disposed to face each other, and a first transparent electrode LL1 disposed on one surface of the first transparent substrate SUB1 . ), a first alignment layer AL1 disposed on the first transparent electrode LL1, and a second transparent electrode disposed on one surface of the second transparent substrate SUB2 facing the first transparent substrate SUB1 ( LL2), a second alignment layer AL2 disposed on the second transparent electrode LL2, and a liquid crystal layer LC disposed between the first alignment layer AL1 and the second alignment layer AL2. .

The first transparent electrode LL1 may include a first sub-electrode LL1a and a second sub-electrode LL1b disposed to surround the first sub-electrode LL1a. The second sub-electrode LL1b may be formed in a ring shape in which an opening is formed outside. The first sub-electrode LL1a may further include a first lead line drawn out through the opening of the second sub-electrode LL1b. The second sub-electrode LL1b may include a second lead line drawn outward.

The second transparent electrode LL2 may include a third leader line drawn outward.

The first lens module 12a may further include a first image position determining unit VJ1 and a first power supply unit PS1.

The first image position determining unit VJ1 determines that depth information of a first input image (eg, an image for the left eye) supplied to the first display panel PNL1 is displayed in front of the first display panel PNL1 . It is determined whether it is located on the side, behind the first display panel PNL1, or on the first display panel PNL1, and the corresponding position information data is output.

The first power supply unit PS1 outputs a voltage corresponding to each position information according to the position information data output from the first image position determination unit VJ1.

Hereinafter, how the first focus control unit FC1 operates by the first image position determination unit VJ1 and the first power supply unit PS1 will be described in more detail with reference to FIGS. 6A to 6C . .

The first image position determining unit VJ1 determines that depth information of the first input image (eg, the left-eye image) supplied to the first display panel PNL1 is located in front of the first display panel PNL1 . When it is determined, as shown in FIG. 6A , the first power supply unit PS1 is connected to the first sub-electrode LL1a so as to generate a potential difference between the second transparent electrode LL2 and the first sub-electrode LL1a. A voltage V1 is supplied, and a third voltage V3 (eg, a ground voltage) is supplied to the second transparent electrode LL2 . Also, the first power supply unit PS1 supplies the third voltage V3 to the second sub-electrode LL1b so that a potential difference does not occur between the second transparent electrode LL2 and the second sub-electrode LL1b. Accordingly, an electric field of the first voltage V1 is applied between the first sub-electrode LL1a and the second transparent electrode LL2 positioned at the center, so that the first sub-electrode LL1a and the second transparent electrode LL2 are applied. Although the liquid crystal molecules in the liquid crystal layer located between them rotate, no potential difference occurs between the second sub-electrode LL1b and the second transparent electrode LL2 located on both sides of the first sub-electrode LL1a. Liquid crystal molecules located in LC) do not move. Accordingly, the first focus control unit FC1 operates as a concave lens to correct depth information of the first input image positioned in front of the first display panel PNL1 to match the focal length, so that the focal length It is possible to obtain the effect of preventing dizziness due to the difference in convergence distance.

The first image position determining unit VJ1 determines that the depth information of the first input image (eg, the left eye image) supplied to the first display panel PNL1 is located behind the first display panel PNL1 . When it is determined, as shown in FIG. 6B , the first power supply unit PS1 is connected to the first sub-electrode LL1a to generate a potential difference between the second transparent electrode LL2 and the second sub-electrode LL1b. A voltage V2 is supplied, and a third voltage V3 (eg, a ground voltage) is supplied to the second transparent electrode LL2 . Also, the first power supply unit PS1 supplies the third voltage V3 to the first sub-electrode LL1a so that a potential difference does not occur between the second transparent electrode LL2 and the first sub-electrode LL1a. Accordingly, since a potential difference does not occur between the first sub-electrode LL1a and the second transparent electrode LL2 positioned at the center, the liquid crystal layer ( The liquid crystal molecules located in the LC) do not move, but the liquid crystal molecules in the liquid crystal layer located between the second sub-electrode LL1b and the second transparent electrode LL2 generate a potential difference and thus rotate. Accordingly, the first focus control unit FC1 operates as a convex lens and corrects depth information of the first input image positioned at the rear of the first display panel PNL1 to match the focal length. It is possible to obtain the effect of preventing dizziness due to the difference in convergence distance.

The first image position determining unit VJ1 determines that the depth information of the first input image (eg, the left-eye image) supplied to the first display panel PNL1 is located on the first display panel PNL1 . 6c, the first power supply unit PS1 is connected between the second transparent electrode LL2 and the first sub-electrode LL1a, and between the second transparent electrode LL2 and the second sub-electrode LL1b. ), a first voltage V1 or a second voltage V2 is supplied to the first sub-electrode LL1a and the second second sub-electrode LL1b to generate the same potential difference between the second transparent electrodes LL2. A third voltage V3 (eg, a ground voltage) is supplied to the . Accordingly, the same potential difference is generated between the first sub-electrode LL1a and the second transparent electrode LL2 located in the center and between the second sub-electrode LL1b and the second transparent electrode LL2, so that the entire liquid crystal layer LC ), the liquid crystal molecules all rotate. Therefore, since the first focus control unit FC1 operates as a flat lens, depth information of the first input image located on the first display panel PNL1 is matched with the focal length, so that the difference between the focal length and the convergence distance is generated. It can have the effect of preventing dizziness.

Next, the second lens module 12b will be described. The second lens module 12b may include a second focus control unit FC2 having substantially the same configuration as the first focus control unit FC1 . Accordingly, the same components as those of the first focus control unit FC1 will be described with the same reference numerals.

The second focus control unit FC2 includes a first transparent substrate SUB1 and a second transparent substrate SUB2 disposed to face each other, and a third transparent electrode LR1 disposed on one surface of the first transparent substrate SUB1 . ), a first alignment layer AL1 disposed on the third transparent electrode LR1, and a fourth transparent electrode disposed on one surface of the second transparent substrate SUB2 facing the first transparent substrate SUB1 ( LR2), a second alignment layer AL2 disposed on the fourth transparent electrode LR2, and a liquid crystal layer LC disposed between the first alignment layer AL1 and the second alignment layer AL2. .

The third transparent electrode LR1 may include a third sub-electrode LR1a and a fourth sub-electrode LR1b disposed to surround the third sub-electrode LR1a. The fourth sub-electrode LR1b may be formed in a ring shape in which an opening is formed outside. The third sub-electrode LR1a may further include a fourth lead line drawn out through the opening of the fourth sub-electrode LR1b. The fourth sub-electrode LR1b may include a fifth leader line drawn outward.

The fourth transparent electrode LR2 may include a sixth lead wire drawn outward.

The second lens module 12b may further include a second image position determination unit VJ2 and a second power supply unit PS2.

The second image position determining unit VJ2 determines the depth information of the second input image (eg, the right eye image) supplied to the second display panel PNL2 in front of the second display panel PNL2 . It is determined whether it is located on the side, behind the second display panel PNL2, or on the second display panel PNL2, and the corresponding position information data is output.

The second power supply unit PS2 outputs a voltage corresponding to each position information according to the position information data output from the second image position determination unit VJ2.

Again, how the second focus control unit FC2 operates by the second image position determination unit VJ2 and the second power supply unit PS2 will be described in more detail with reference to FIGS. 6A to 6C . .

The second image position determining unit VJ2 determines that depth information of the second input image (eg, the right eye image) supplied to the second display panel PNL2 is positioned in front of the second display panel PNL2 . When it is determined, as shown in FIG. 6A , the second power supply unit PS2 is connected to the third sub-electrode LR1a so as to generate a potential difference between the fourth transparent electrode LR2 and the third sub-electrode LR1a. A voltage V1 is supplied, and a third voltage V3 (eg, a ground voltage) is supplied to the fourth transparent electrode LR2 . Also, the second power supply unit PS2 supplies the third voltage V3 to the fourth sub-electrode LR1b so that a potential difference does not occur between the fourth transparent electrode LR2 and the fourth sub-electrode LR1b. Accordingly, an electric field of the first voltage V1 is applied between the third sub-electrode LR1a and the fourth transparent electrode LR2 positioned at the center, so that the third sub-electrode LR1a and the fourth transparent electrode LR2 are applied. Although the liquid crystal molecules of the liquid crystal layer located between them rotate, the potential difference does not occur between the fourth sub-electrode LR1b and the fourth transparent electrode LR2 located on both sides of the third sub-electrode LR1a. Liquid crystal molecules located in LC) do not move. Accordingly, the second focus control unit FC2 operates as a concave lens to correct the depth information of the second input image positioned in front of the second display panel PNL2 to match the focal length. It is possible to obtain the effect of preventing dizziness due to the difference in convergence distance.

The second image position determining unit VJ2 determines that depth information of the second input image (eg, the right eye image) supplied to the second display panel PNL2 is located behind the second display panel PNL2 . When it is determined, as shown in FIG. 6B , the second power supply unit PS2 is connected to the third sub-electrode LR1a to generate a potential difference between the fourth transparent electrode LR2 and the fourth sub-electrode LR1b. A voltage V2 is supplied, and a third voltage V3 (eg, a ground voltage) is supplied to the fourth transparent electrode LR2 . Also, the second power supply unit PS2 supplies the third voltage V3 to the third sub-electrode LR1a so that a potential difference does not occur between the fourth transparent electrode LR2 and the third sub-electrode LR1a. Accordingly, since a potential difference does not occur between the third sub-electrode LR1a and the fourth transparent electrode LR2 positioned at the center, the liquid crystal layer ( The liquid crystal molecules located in the LC) do not move, but the liquid crystal molecules in the liquid crystal layer located between the fourth sub-electrode LR1b and the fourth transparent electrode LR2 generate a potential difference and thus rotate. Accordingly, the second focus control unit FC2 operates as a convex lens and corrects depth information of the second input image positioned at the rear of the second display panel PNL1 to match the focal length. It is possible to obtain the effect of preventing dizziness due to the difference in convergence distance.

The second image position determining unit VJ2 determines that the depth information of the second input image (eg, the right eye image) supplied to the second display panel PNL2 is located on the second display panel PNL2 . 6c, the second power supply unit PS2 is connected between the fourth transparent electrode LR2 and the third sub-electrode LR1a, and between the fourth transparent electrode LR2 and the fourth sub-electrode LR1b. ) to generate the same potential difference between the third sub-electrode LR1a and the fourth sub-electrode LR1b, the first voltage V1 or the second voltage V2 is supplied, and the fourth transparent electrode LR2 is supplied with the second voltage. A voltage V3 (eg, a ground voltage) is supplied. Accordingly, the same potential difference is generated between the third sub-electrode LR1a and the fourth transparent electrode LR2 located in the center and between the fourth sub-electrode LR1b and the fourth transparent electrode LR2, so that the entire liquid crystal layer LC ), the liquid crystal molecules all rotate. Accordingly, since the second focus control unit FC2 operates as a flat lens, depth information of the second input image positioned on the second display panel PNL2 matches the focal length. It can have the effect of preventing dizziness.

The case where the first and second input images (left-eye image and right-eye image) supplied to the first and second display panels PNL1 and PNL2 have depth information has been described as an example.

However, the invention of the present specification may be applied to a case in which the first and second input images (left-eye image and right-eye image) supplied to the first and second display panels PNL1 and PNL2 do not have depth information. .

Hereinafter, with reference to FIGS. 7A and 7B , the first image position determiner VJ1 and the second image position determiner VJ2 determine the image data for each perspective with respect to the input image in detail. do.

7A is a diagram illustrating an example of a case in which the stereoscopic image 3D is recognized as being located outside the focus control units FC1 and FC2, and FIG. 7B is a diagram illustrating the stereoscopic image 3D is positioned outside the focus control units FC1 and FC2. It is a diagram showing an example of the case where it is recognized as being located between FC2) and the display screen DS.

7A and 7B , PD represents the distance between the pupil of a first eye (eg, left eye) (LE) and that of a second eye (eg, right eye) (RE). DFD indicates a distance between the display screen DS and the first and second focus control units FC1 and FC2. ZD is the vertical distance between the first line segment connecting the pupil of the left eye (LE) and the pupil of the right eye (RE) and the second line segment connecting the first focus adjustment unit FC1 and the second focus adjustment unit FC2 indicates. ID indicates a distance between the image on the first focus control unit FC1 and the image on the second focus control unit FC2. FD is the distance between the left eye (LE) and the display screen (DS), or the distance between the right eye (RE) and the display screen (DS) (that is, the first and second images displayed from the pupils of both eyes (LE, RE) 2 Indicates the distance between the display surfaces of the display panels NL1 and PNL2 (hereinafter referred to as “focal distance.” VD is a stereoscopic image (LI) and a right eye image (RI) combined from the pupils of both eyes. 3D) represents the convergence distance to the image forming position PD, DFD, and ZD are predetermined values by the device itself, and ID, FD, and VD are image information, PD, DFD, ZD, and trigonometric formulas value that can be obtained.

7A and 7B , the stereoscopic image 3D is located between the first and second focus control units FC1 and FC2 and the display screen DS, or located outside the display screen DS. can be

The first image data (eg, left-eye image data) and second image data (eg, right-eye image data) constituting the stereoscopic image 3D include a first DIC (DIC1) and a second DIC (DIC2). is inputted to the first and second image position determining units VJ1 and VJ2, respectively.

Since the distance PD between the pupil of the left eye LE and the pupil of the right eye RE is a value determined by the user, it is regarded as a known value. For example, the PD value may be configured to be selected by the user after storing an average data value or a plurality of numerical values according to racial characteristics in a memory. ZD is also a fixed value because it is an equipment-specific value.

Therefore, if a specific user uses the display device of the present specification, the PD value and the ZD value are fixed values, and only the ID value changes depending on the input image. As can be seen from FIGS. 7A and 7B , the VD value increases as the ID value and the PD value have similar values, and the VD value decreases as the difference between the ID value and the PD value increases.

The first and second image position determining unit VJ1 and the second image determining unit VJ2 extract the distance (ID) between the first image data and the second image data from the first image data and the second image data, and then use the ZD value and the ID value to perform 3D A ZD value of a position where the image 3D is formed may be calculated. The first and the image position determining unit VJ1 may also obtain FD using a trigonometric formula with ID, ZD, DFD, and VD.

When it is determined that FD and VD are different from each other through the above-described process, the first and the image position determining unit VJ1 and the second image determining unit VJ2 output corresponding position information data.

The first and second power supply units PS1 and VS2 supply voltages corresponding to each position information according to the position information data output from the first and second image position determining units VJ1 and VJ2, respectively.

The first focus control unit FC1 and the second focus control unit FC2 operate as a concave lens or a convex lens depending on the voltage supplied from the first and second power supply units PS1 and VS2 to determine the focal length FD and Since there is no difference in the convergence distance (VD), it is possible to obtain an effect of preventing dizziness due to the difference between the focal length (FD) and the convergence distance (VD).

In this regard, since it has already been described in detail with reference to FIGS. 6A to 6C , further description is omitted to avoid duplicate description.

Meanwhile, as described above, when the first and second focus adjustment units FC1 and FC2 convert the lens into a convex lens or a concave lens, the size of the object is also enlarged or reduced.

Accordingly, a new image may be extracted by converting the size of the original image by calculating the enlarged ratio or the reduced ratio.

The display device according to the embodiment of the present specification classifies the positions of objects existing on the display screen DS (first and second display panels) PNL1 and PNL2 according to focal lengths, and classifies the images approximately 2 to 5 It is analyzed by dividing it into dogs. This is because if the number of images according to the distance of the object is too large, processing speed will be problematic, and if too small, the precision will be lowered.

Hereinafter, with reference to FIG. 8 , a method of classifying objects existing on the display screen DS (first and second display panels) PNL1 and PNL2 according to focal lengths and implementing the image will be described. .

8 is a flowchart illustrating an image realization method when the positions of objects positioned on the display screen DS are classified according to focal lengths and the number of images is set to three.

First, when the display device according to the embodiment of the present specification starts to be driven ( S100 ), the first and second image position determining units VJ1 and VJ2 perform three sets of images according to the number of objects having different focal lengths in the input image. A segmented image is extracted (S110).

The first and second image position determining units VJ1 and VJ2 obtain PD, ID, FD, and ZD for the first segmented image N according to the method described with reference to FIGS. 7A and 7B , and FD and ZD Based on the first segmented image, the position information data of the object is output (S120).

The first and second power supply units PS1 and PS2 provide first to second power supply units according to the position information data output from the first and second image position determining units VJ1 and VJ2, as described with reference to FIGS. 6A to 6C . 3 Outputs voltages (V1 to V3). The first and second focus controllers FC1 and FC2 adjust refractive indices of the first and second focus controllers FC1 and FC2 according to the first to third voltages and the first to third voltages V1 to V3. to act as a concave lens, a convex lens, or a flat lens. Accordingly, the size of the object in the first divided image is corrected and output as the first corrected image (S140, S150).

Subsequently, the second and subsequent segmented images are also processed through the same steps as the first segmented image in a time division manner, and a newly extracted video image can be output to implement a stereoscopic image (S160 and S170).

The display device according to the present specification may be described as follows.

A display device according to an embodiment of the present specification includes a first display panel on which a first input image is displayed; a second display panel on which a second input image is displayed in combination with the first input image to realize a stereoscopic image, the second display panel being disposed adjacent to the first display panel; a first lens module disposed to correspond to the first display panel; and a second lens module disposed to correspond to the second display panel, wherein each of the first and second lens modules is configured to capture first and second input images supplied to the first and second display panels, respectively. Depending on the information, it can operate as a convex lens, a concave lens or a flat lens.

In the above embodiment, each of the first and second lens modules, a first transparent substrate and a second transparent substrate disposed to face each other; a first transparent electrode disposed on one surface of the first transparent substrate; a second transparent electrode disposed on one surface of the second transparent substrate facing the first transparent substrate; and a liquid crystal layer disposed between the first transparent electrode and the second transparent electrode, wherein one of the first transparent electrode and the second transparent electrode includes: a first sub-electrode; and a second sub-electrode disposed to surround the first sub-electrode and spaced apart from the first sub-electrode, wherein the other of the first transparent electrode and the second transparent electrode is a single electrode. It may be a transparent electrode.

In addition, in the display device of the embodiment, when the stereoscopic image information is located in front of one of the first display panel and the second display panel, the corresponding first sub-electrode and the second display panel A first voltage is supplied to at least one of the two sub-electrodes so that a voltage difference is applied between the single transparent electrode and at least one of the first sub-electrode and the second sub-electrode, and the first and At least one of the second lens modules may act as the concave lens.

On the other hand, when the stereoscopic image information is located behind at least one of the first display panel and the second display panel, at least one of the first sub-electrode and the second sub-electrode corresponding thereto A second voltage is supplied to the single transparent electrode and a voltage difference is applied between at least one of the first sub-electrode and the second sub-electrode, and at least one of the first and second lens modules to which the second voltage is supplied. One may act as the convex lens.

In addition, when the stereoscopic image information is located on at least one of the first display panel and the second display panel, a third information is provided on at least one of the first sub-electrode and the second transparent electrode corresponding thereto. A third voltage is supplied so that a voltage difference is not applied between the single transparent electrode and at least one of the first sub-electrode and the second sub-electrode according to a control signal, and the first and second voltages to which the third voltage is supplied At least one of the lens modules may act as the flat lens.

In addition, the first lens module may be configured to determine whether the first input image supplied to the first display panel is located in front of the first display panel, is located behind the first display panel, or the first display a first image position determining unit that determines whether it is located on the panel and outputs position information data; and a first power supply unit for outputting a voltage corresponding to each position information according to the position information data output from the first image position determining unit.

The second lens module may be configured to determine whether the second input image supplied to the second display panel is located in front of the second display panel or behind the second display panel, or whether the second display panel is displayed. a second image position determining unit for determining whether a position is located on the panel and outputting position information data; and a second power supply unit for supplying a voltage corresponding to each position information according to the position information data output from the second image position determining unit.

In addition, each of the first lens module and the second lens module extracts at least two or more divided images according to the number of objects having different focal lengths from the first input image and the second input image, and the at least two or more A convergence distance is calculated for an object having a different focal length from each divided image by time division, and when the focal length and the convergence distance are different, the refractive index of the first and second lens modules is adjusted to match the focal length and the convergence distance can do it

In addition, each of the first lens module and the second lens module includes a pupillary distance that is a distance between the pupil of the first eye and the pupil of the second eye, a distance between the pupil of the first eye and the first lens module, or the The focal length is calculated using the pupil-lens distance, which is the distance between the pupil of the second eye and the second lens module, and the lens module distance, which is the distance between the image on the first lens module and the image on the second lens module. obtaining the convergence distance using the panel-lens distance, which is the distance between the first lens module and the first display panel or the distance between the first lens module and the first display panel, and the focal length, , The focal length represents a distance between a pupil-display panel image, which is a distance between the pupil of the first eye and an image on the first display panel, or a distance between the pupil of the second eye and an image on the second display panel, and The convergence distance is the distance between the pupil of the first eye and the position where the stereoscopic image is formed, or the distance between the pupil of the second eye and the position where the stereoscopic image is formed.

Those skilled in the art from the above description will be able to see that various changes and modifications can be made without departing from the technical spirit of the present invention. Accordingly, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

12, 12a, 12b: lens module 13: display module
VJI: VJ2: Image position determination unit PS1: PS2: Power supply unit
FC1, FC2: focus control unit LL1: first transparent electrode
LL1a: first sub-electrode LL1b: second sub-electrode
LL2: second transparent electrode LR1: third transparent electrode
LR2: fourth transparent electrode DS: display screen
PNL1: first display panel PNL2: second display panel
SUB1, SUB2: Substrate

Claims (9)

a first display panel on which a first input image is displayed;
a second display panel on which a second input image is displayed in combination with the first input image to realize a stereoscopic image, the second display panel being disposed adjacent to the first display panel;
a first lens module disposed to correspond to the first display panel; and
and a second lens module disposed to correspond to the second display panel,
Each of the first and second lens modules is a personal immersive device operating as a convex lens, a concave lens, or a flat lens according to the information of the first and second input images supplied to the first and second display panels, respectively. display device.
The method of claim 1,
Each of the first and second lens modules,
a first transparent substrate and a second transparent substrate disposed to face each other;
a first transparent electrode disposed on one surface of the first transparent substrate;
a second transparent electrode disposed on one surface of the second transparent substrate facing the first transparent substrate; and
and a liquid crystal layer disposed between the first transparent electrode and the second transparent electrode,
One of the first transparent electrode and the second transparent electrode,
a first sub-electrode; and
a second sub-electrode disposed to surround the first sub-electrode and spaced apart from the first sub-electrode;
The other one of the first transparent electrode and the second transparent electrode is a single transparent electrode.
3. The method of claim 2,
When the stereoscopic image information is located in front of one of the first display panel and the second display panel, at least one of the first sub-electrode and the second sub-electrode corresponding thereto is provided with the single A first voltage is supplied such that a voltage difference is applied between the transparent electrode and at least one of the first sub-electrode and the second sub-electrode, and at least one of the first and second lens modules to which the first voltage is supplied is configured to A personal immersive device display that acts as a concave lens.
3. The method of claim 2,
When the stereoscopic image information is located behind at least one of the first display panel and the second display panel, at least one of the first sub-electrode and the second sub-electrode corresponding thereto is provided with the single A second voltage is supplied such that a voltage difference is applied between the transparent electrode and at least one of the first sub-electrode and the second sub-electrode, and at least one of the first and second lens modules to which the second voltage is supplied is configured to A personal immersive device display that acts as a convex lens.
3. The method of claim 2,
When the stereoscopic image information is located on at least one of the first display panel and the second display panel, a third control signal is transmitted to at least one of the first sub-electrode and the second transparent electrode corresponding thereto. a third voltage is supplied so that a voltage difference is not applied between the single transparent electrode and at least one of the first sub-electrode and the second sub-electrode, and the first and second lens modules to which the third voltage is supplied At least one of the display devices of the personal immersive device that acts as the flat lens.
6. The method according to any one of claims 2 to 5,
The first lens module,
It is determined whether the first input image supplied to the first display panel is located in front of the first display panel, is located behind the first display panel, or is located in the first display panel to obtain position information data. a first image position determining unit that outputs and
and a first power supply unit for outputting a voltage corresponding to each position information according to the position information data output from the first image position determining unit.
7. The method of claim 6,
The second lens module,
It is determined whether the second input image supplied to the second display panel is located in front of the second display panel, is located behind the second display panel, or is located in the second display panel to obtain position information data. a second image position determining unit that outputs and
and a second power supply unit for supplying a voltage corresponding to each position information according to the position information data output from the second image position determining unit.
3. The method of claim 2,
Each of the first lens module and the second lens module,
extracting at least two or more divided images according to the number of objects having different focal lengths from the first input image and the second input image,
Calculating a convergence distance for an object having a different focal length in time division from each of the at least two or more divided images,
When the focal length and the convergence distance are different, the display device of the personal immersive device adjusts the refractive indices of the first and second lens modules to match the focal length and the convergence distance.
9. The method of claim 8,
Each of the first lens module and the second lens module,
The pupil distance, which is the distance between the pupil of the first eye and the pupil of the second eye, and the pupil, which is the distance between the pupil of the first eye and the first lens module, or the distance between the pupil of the second eye and the second lens module- The focal length is obtained by using the distance between the lenses and the distance between the lens modules, which is the distance between the image on the first lens module and the image on the second lens module,
obtaining the convergence distance using a panel-lens distance, which is a distance between the first lens module and the first display panel or a distance between the first lens module and the first display panel, and the focal length,
The focal length represents a distance between the pupil of the first eye and the image on the first display panel or the distance between the pupil of the second eye and the image on the second display panel, which is a distance between the pupil and the display panel image,
The convergence distance is the distance between the pupil of the first eye and the position where the stereoscopic image is formed, or the distance between the pupil of the second eye and the position where the stereoscopic image is formed, the distance between the pupil-stereoscopic image. display of the device.

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