JPH10260376A - Two-dimensional video/three-dimensional video compatible type display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the two-dimensional vide/three-dimensional video compatible type video display device which can switch and display three-dimensional video and two-dimensional video and is short in proper view distance when the three-dimensional video is displayed. SOLUTION: On a liquid crystal panel 1, a liquid crystal layer 7 for video display which displays the three-dimensional video or twodimensional video and a dispersion type liquid crystal layer 8 which diffuses light from a spectral means 11 when the liquid crystal layer 7 for video display displays the two-dimensional video and diffuses the light from the spectral means 11 when the liquid crystal layer 7 for video display displays the threedimensional video are formed across an insulating layer 9. Consequently, specific thickness can be secured as the thickness W1 between the dispersion liquid crystal layer 8 and spectral means 11 and the thickness W2 between the liquid crystal layer 7 for video display and spectral means 11 can be shortened, so the proper view distance D can be made short.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-dimensional video / three-dimensional video compatible type capable of switching between three-dimensional video and two-dimensional video, or displaying mixed three-dimensional video and two-dimensional video. It relates to a display device.

[0002]

2. Description of the Related Art In recent years, three-dimensional images and two-dimensional images that can be viewed without using glasses can be switched and displayed. When displaying a two-dimensional image, an observer is not limited to a specific position. A two-dimensional / three-dimensional video compatible display device capable of observing a good two-dimensional video free of moire and the like in a wide range is provided.

The above-mentioned two-dimensional video / three-dimensional video compatible display device is proposed in, for example, Japanese Patent Application No. 8-105845. FIG. 8 is a plan view showing a specific configuration of the 2D / 3D image compatible display device. This device 10
0 is the first pixel group and the second pixel group
The liquid crystal panel 101 is a display panel including the liquid crystal layer 101a in which the pixel groups are formed, the dispersion type liquid crystal panel 106 is a diffusion effect ON / OFF panel including the dispersion type liquid crystal layer 106a, the light transmitting portion 110a and the light shielding portion 110b. And a backlight 120 that is a planar light source.

[0004] In order to display a three-dimensional image by the device 100, an image signal is formed such that the first pixel group of the liquid crystal panel 101 is for the right eye and the second pixel group is for the left eye. Given to the liquid crystal panel 101,
For 06, the diffusion effect is OFF. by this,
The light from the backlight 120 is split right and left, and by the split light, the image of the first pixel group for the right eye reaches the right eye of the observer 115 and the image of the second pixel group for the left eye. The image reaches the left eye of the observer 115. Thereby, the observer 115 can observe a three-dimensional image.

On the other hand, in order to display a two-dimensional image with the device 100, a video signal is applied to the first pixel group and the second pixel group of the liquid crystal panel 101 such that the video signals are the same from the viewpoint. The diffusion effect is given to the panel 101 and the diffusion effect is turned on for the dispersion type liquid crystal panel 106. As a result, as shown in FIG. 9, the light from the spectral means 110 is diffused. Thereby, the observer 11
Reference numeral 5 indicates that all pixels of the liquid crystal panel 101 are viewed by both eyes 116 and 117, so that a high-quality two-dimensional image can be viewed.

[0006]

Here, when displaying a two-dimensional image, the light is diffused and the light shielding portion 110b is moved to the observer 1.
The thickness W1 from the spectroscopic means 110 to the dispersed liquid crystal layer 106a of the dispersed liquid crystal panel 106 needs to be at least about 0.5 mm in order to ensure that the dispersion liquid crystal panel 15 cannot be seen. Therefore,
In the configuration of the device 100, the thickness W2 from the spectral unit 110 to the liquid crystal layer 101a of the liquid crystal panel 101 is 2.0
mm.

By the way, in the configuration of the device 100, an appropriate viewing distance D from the liquid crystal layer of the liquid crystal panel to the observer 115.
And the above-described condition determined by the configuration of the apparatus 100 are obtained by the following proportional expression, and the expression for calculating the appropriate viewing distance D by this proportional expression can be calculated as follows. Note that the distance w indicates the above-described air-equivalent distance of the thickness W2 (W2 / n: n is the refractive index of glass).

[0008]

## EQU1 ## d: w = E: (D + w) D = (Ed) w / d = (ED) W2 / nd D: Appropriate viewing distance of observer 115 w: Dispersion means 110 to liquid crystal layer 101a E: distance between eyes d: distance between pixels W2: thickness from spectroscopic means 110 to liquid crystal layer 101a n: refractive index between spectroscopic means 110 and liquid crystal layer 101a

The conditions W2 = 2.0 mm, E = 65 mm, n = 1.5 and d set by the configuration of the apparatus 100
By substituting = 0.11 mm into Equation 1, the suitable viewing distance D is obtained as about 786.6 mm. As shown in Equation 1, the suitable viewing distance D increases in proportion to the thickness W2.
Therefore, since the thickness W2 of the present apparatus 100 is relatively large, the optimal viewing distance D for observing the three-dimensional image of the present apparatus 100 is far from the screen.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a two-dimensional / three-dimensional video compatible display device having a short suitable viewing distance and a simple configuration. .

[0011]

The two-dimensional image of the present invention / 3
The three-dimensional image compatible display device is a planar light source that emits light in a planar manner, a spectral unit that splits light from the flat light source into left and right light, and a dispersed liquid crystal layer that transmits or diffuses the light from the spectral unit. A liquid crystal panel in which a liquid crystal layer for video display forming a display screen is connected by a first pixel group and a second pixel group via a transparent insulating layer; Controlling the dispersive liquid crystal layer to transmit light from the spectral unit when displaying a two-dimensional image, and to diffuse the light from the spectral unit when the liquid crystal layer for image display displays a two-dimensional image. It is characterized by.

With such a configuration, the distance (thickness) required for displaying a two-dimensional image without pixel degradation can be ensured by setting the distance between the spectral means and the dispersion type liquid crystal layer. The distance (thickness) between the image display liquid crystal layer and the spectral means can be reduced. Therefore, 2
The suitable viewing distance when displaying a three-dimensional image can be shortened while preventing pixel deterioration of the three-dimensional image. In addition, the liquid crystal panel 1
Finally, a liquid crystal layer for image display and a dispersion type liquid crystal layer
The number of parts can be reduced.

The two-dimensional video / three-dimensional video compatible display device of the present invention is a flat light source that emits light in a planar manner, spectral means for splitting light from the flat light source into left and right lights, and the spectral means. A liquid crystal in which a dispersion type liquid crystal layer that transmits or diffuses light from a liquid crystal layer and a video display liquid crystal layer that forms a display screen by a first pixel group and a second pixel group are connected via a transparent insulating layer. A panel, wherein the image display liquid crystal layer displays a mixture of a three-dimensional image and a two-dimensional image, and transmits light from the spectral unit in a region corresponding to the three-dimensional image portion; In the region corresponding to the two-dimensional image portion, the dispersion-type liquid crystal layer is controlled so as to diffuse the light from the spectral unit.

With the above configuration, when the three-dimensional video display state and the two-dimensional video display state are formed on a single screen in a mixed manner, both the three-dimensional video and the two-dimensional video are of high image quality. And the distance (thickness) between the image display liquid crystal layer and the spectroscopic means can be reduced, so that the appropriate viewing distance when displaying a three-dimensional image can be shortened.

As a specific configuration for driving the dispersion type liquid crystal layer, a plurality of electrodes are formed on at least one surface of the dispersion type liquid crystal layer, and a voltage is selectively applied to the plurality of electrodes. It may be. Note that a static driving method, a matrix driving method, or the like can be used as an electrode driving method of the dispersed liquid crystal layer.

Further, as a specific configuration for driving the liquid crystal layer for image display, a transparent electrode is formed on the surface of the liquid crystal layer for image display on the insulating layer side, and the transparent electrode and the insulating layer are separated from each other. A color filter may be formed therebetween, and a liquid crystal drive electrode may be formed on the other surface of the image display liquid crystal layer. Thus, the image display liquid crystal layer is controlled by, for example, an active matrix driving method. According to the above configuration,
For example, a liquid crystal driving electrode composed of a TFT and a pixel electrode is
It is formed on a glass substrate constituting the liquid crystal panel. Therefore, manufacturing is easier than forming the liquid crystal driving electrodes on an insulating layer that is relatively thin.

Further, the insulating layer may be made of a glass substrate.

Further, the spectral means may be provided directly so as to be integrally formed on the light incident side of the liquid crystal panel. According to this, the number of parts can be reduced and assembly can be simplified.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing a two-dimensional video / 3-dimensional video compatible display device 20 according to this embodiment. This device 20 is a three-dimensional video / 2
It is configured by arranging a liquid crystal panel 1 for displaying a two-dimensional image, a spectral unit 11, and a backlight 16 which is a planar light source.

The liquid crystal panel 1 includes a light emitting side glass substrate 2, a light incident side glass substrate 3, a liquid crystal layer 6 provided between these substrates 2 and 3, and a light emitting side of the light emitting side glass substrate 2. It has an observer-side polarizing plate 4 attached to the side, and a back-side polarizing plate 5 attached to the light incident side of the light incident side glass substrate 3.

The liquid crystal layer 6 includes a video display liquid crystal layer 7 formed of a TN (Twinsted Nematic) liquid crystal provided on the substrate 2 side, a dispersion type liquid crystal layer 8 provided on the substrate 3 side, and the video display liquid crystal. An insulating layer 9 made of a glass substrate provided between the layer 7 and the dispersion type liquid crystal layer 8;
The color filter 10 is provided between the insulating layer 9 and the image display liquid crystal layer 7. As the dispersion type liquid crystal constituting the dispersion type liquid crystal layer 8, there are a mixture of liquid crystal molecules in a polymer or a polymer dispersion type liquid crystal in which a liquid crystal is dispersed in a network of polymers. A type that transmits light when a voltage is applied to the liquid crystal material and scatters light when no voltage is applied, or conversely, transmits light when no voltage is applied and applies a voltage Any type that scatters light when is applied may be used. In addition, the liquid crystal layer 7 for image display includes:
Other liquid crystal materials such as STN liquid crystal may be used.

Further, a TFT (not shown) for driving a TN liquid crystal of the liquid crystal layer 7 for image display is provided on the glass substrate 2.
(Thin Film Transistor), and drive electrodes such as pixel electrodes are formed.
A transparent electrode (not shown) is formed between 0 and the image display liquid crystal layer 7 as a counter electrode of the drive electrode. This makes it possible to form the drive electrodes more easily than to form the drive electrodes on the insulating layer 9 made of a relatively thin glass substrate. A transparent electrode (for example, ITO) (not shown) is formed on the insulating layer 9 on the dispersion type liquid crystal layer 8 side, and a transparent electrode (not shown) is formed on the glass substrate 3. Thus, electrodes are provided on both sides of the image display liquid crystal layer 7 and the dispersion type liquid crystal layer 8, respectively, so that the two image display liquid crystal layers 7 and the dispersion type liquid crystal layer 8 are separately driven.

For example, the image display liquid crystal layer 7 is driven by an active matrix driving method, and an image is displayed by applying a voltage according to a given image signal. By processing a video signal supplied to the liquid crystal panel 1, a first pixel group arranged in the vertical direction of the screen and a second pixel group arranged in the vertical direction of the screen are alternately formed in the horizontal direction. The first pixel group and the second pixel group may be left-eye pixels and right-eye pixels having different viewpoints, or the first pixel group and the second pixel group may be different from each other. Pixels having the same viewpoint can be used.

On the other hand, the dispersion type liquid crystal layer 8 is driven between the transparent electrodes by a simple matrix driving method, a static driving method, or the like. The light from the spectroscopic unit 11 is diffused by applying a voltage (diffusion effect ON), or the light is transmitted (diffusion effect OFF).

The dispersing means 11 is formed by forming vertical stripe-shaped transmission portions 11a and barrier portions 11b alternately in the horizontal direction on the upper surface of the glass substrate 12 (the surface facing the liquid crystal panel 1). The transmission portion 11a and the barrier portion 11b are formed at a predetermined pitch so as to separate the light of the first pixel group and the light of the second pixel group into left and right. The barrier section 11b includes a reflection film 13 and a light absorption film 14. The reflection film 13 is formed on the glass substrate 12, and the light absorption film 14 is formed on the reflection film 13. That is, the reflection film 13 is formed on the side receiving the light from the backlight 16. As a material for forming the reflective film 13, for example, Al
(Aluminum) or the like, and chromium oxide or the like is used as a material for forming the light absorbing film 14. And the transmission part 11a and the barrier part 11b of the said vertical stripe form,
The material can be formed by first depositing a material for forming the reflective film 13 on the upper surface of the glass substrate 12, then depositing a material for forming the light absorbing film 14, and removing a portion to be the transmission portion 11a by etching.

In order to display a three-dimensional image with such a configuration,
TFTs and pixel electrodes for driving the video display liquid crystal layer 7 with video signals so that the first pixel group of the video display liquid crystal layer 7 is for the right eye, for example, and the second pixel group is for the left eye. And the like. Then, the dispersion effect is turned off for the dispersion type liquid crystal layer 8, and the light from the spectral means 11 is transmitted without being diffused. Thereby, the right-eye image and the left-eye image are separated as shown in FIG. 1, and the right-eye image is applied to the right eye 16 of the observer 15, and the left-eye image is applied to the left eye 17 of the observer 15. Each reaches, and the observer 15 observes the three-dimensional image.

On the other hand, in order to display a two-dimensional image, an image signal is displayed on the image display liquid crystal layer 7 so that the first pixel group and the second pixel group have the same viewpoint from each other. To the driving electrodes such as the TFTs and pixel electrodes for driving the liquid crystal layer 7. The diffusion effect of the dispersion type liquid crystal layer 8 is turned on. Then, as shown in FIG. 2, the light from the spectroscopic means 11 is diffused. As a result, the observer 15 can view the image display liquid crystal layer 7 with both eyes 16 and 17.
, The user sees a high-quality two-dimensional image.

In the first embodiment, the dispersion type liquid crystal layer 8
Is provided in the liquid crystal panel 1, the glass substrate sandwiching the dispersed liquid crystal layer 8 as shown in FIG. 8 of the related art can be removed. Therefore, the thickness W1 from the spectroscopic unit 11 to the dispersion type liquid crystal layer 8 is 1.3 mm, and a predetermined thickness of 0.5 mm or more can be ensured, and the thickness W2 from the spectroscopic unit 11 to the image display liquid crystal layer 7 can be secured. 1.
5 mm, which can be shorter than the conventional thickness W2. As a result, when the optimum viewing distance D is obtained by using Equation 1 under the same conditions as in the related art, the optimum viewing distance D is about 589.00 mm, and the optimum viewing distance D is higher than in the related art.
Can be shortened. For this reason, the distance (thickness) that can sufficiently diffuse the spectral light provided from the spectral means 11 can be maintained, and the suitable viewing distance D can be shortened.

Further, since the liquid crystal panel 1 can have a two-layer structure of the image display liquid crystal layer 7 and the dispersion type liquid crystal layer 8, the number of components such as a glass substrate can be reduced and the assembly can be simplified. be able to.

Further, the light separating means 11 vertically separates the barrier portion 11b and the light transmitting portion 11a in a vertical stripe shape for separating the light of the first pixel group and the light of the second pixel group into right and left. Therefore, a light source in the form of a vertical stripe can be easily realized simply by disposing the spectral means 11 on the front surface of the backlight 16. Further, simplification of the structure and downsizing of the device can be realized.

The barrier section 11b of the spectroscopic means 11
Is formed by laminating a reflection film 13 and a light absorption film 14. Since the reflection film 13 is disposed on the backlight 16 side and the light absorption film 14 is disposed on the liquid crystal panel 1 side, the light is emitted from the backlight 16. Light absorption is reduced, and light utilization efficiency is improved.

(Embodiment 2) Next, a second embodiment of the present invention will be described with reference to the drawings. Note that, for convenience of description, the same members as those described in Embodiment 1 are denoted by the same reference numerals.

FIG. 3 is a sectional view showing a two-dimensional video / three-dimensional video compatible display device 30 of this embodiment. This device 30 is arranged in the order of 3D video / 2
It is configured by arranging a liquid crystal panel 1 for displaying a two-dimensional image, a spectral unit 31, and a backlight 16 which is a planar light source. The liquid crystal panel 1 is the same as that of the first embodiment, and includes a liquid crystal layer 7 for image display and a dispersion type liquid crystal layer 8 connected via a color filter 10 and an insulating layer 9.

The dispersing means 31 is formed on the rear polarizer 5 attached to the light incident side of the light incident side glass substrate 3 of the liquid crystal panel 1 without having the glass substrate 12 in the first embodiment. . The spectral unit 31 is formed by alternately forming transmission portions 31a and barrier portions 31b in the form of vertical stripes alternately in the horizontal direction. The transmission portions 31a and the barrier portions 31b are formed by the light of the first pixel group and the The light is formed at a predetermined pitch so as to separate the light of the two pixel groups left and right. The barrier section 31b includes the reflection film 13 and the light absorption film 14. The light absorbing film 14 is formed on the light incident side surface of the rear-side polarizing plate 5, and the reflecting film 13 is formed on the light absorbing film 14.
That is, the reflection film 1 is provided on the side receiving the light from the backlight 16.
3 is formed. The material for forming the light absorption film 14 and the reflection film 13 and the method for forming the transmission part 31a and the barrier part 31b are as follows.
This is the same as the first embodiment.

According to the structure of the second embodiment, the suitable viewing distance can be shortened, and the spectroscopic means 31 and the liquid crystal panel 1 are integrally formed.
Since the glass substrate 12 having the above configuration is not provided, the number of parts can be further reduced, and assembly can be simplified.

In the first and second embodiments, the dispersion type liquid crystal layer 8 is provided on the light incident side of the insulating layer 9 and the image display liquid crystal layer 7 is provided on the light emitting side. The configuration may be such that the dispersion type liquid crystal layer 8 is provided on the light emission side of the insulating layer 9 and the image display liquid crystal layer 7 is provided on the light incidence side. Note that a color filter 10 is provided on the insulating layer 9 side, and a TFT,
Although the driving electrodes such as the pixel electrodes are provided on the glass substrate 2 side, the color filters 10 may be provided on the glass substrate 2 side, and the driving electrodes such as TFTs and pixel electrodes may be provided on the insulating layer 9 side. .

(Embodiment 3) In Embodiment 3, a transparent electrode provided on a dispersion type liquid crystal panel is divided into a plurality of parts, and a three-dimensional image and a two-dimensional image are mixed on one screen. When displaying, the light from the spectral means is diffused in the area corresponding to the area where the two-dimensional image is displayed, and the light from the spectral means is not diffused in the area corresponding to the area where the three-dimensional image is displayed. It is designed to be transmitted through. Regarding the optical method for separating the right-eye image and the left-eye image, any one of the configuration of the first embodiment, the configuration of the second embodiment, and the configuration disclosed in Japanese Patent Application No. 8-105845. May be used.

FIG. 4 is a plan view showing a split type transparent electrode 60 provided on at least one of both sides of the dispersion type liquid crystal layer 8. This divided type transparent electrode 60 has 4 vertical × 4 horizontal electrodes.
.., And may be provided on at least one of both sides of the dispersion type liquid crystal layer 8. That is, the transparent electrode 60 is provided on the dispersion type liquid crystal layer 8 of the liquid crystal panel 1, though not shown in FIG. The signal line 61 connected to each divided transparent electrode 60a is formed in the horizontal direction of the screen in the screen (diffusion effect area). Thereby, as a spectral means,
For example, the spectral unit 11 (31) described in the first and second embodiments.
Is used, the overlap between the light transmitting portion 11a (31a) and the signal line 61 can be reduced, and the signal line 61 when the diffusion effect of the dispersion type liquid crystal layer 8 is OFF (when the left and right light separation by the spectral means is enabled). Can be reduced. In FIG. 4, a static driving method is adopted as an electrode driving method for the dispersed liquid crystal layer 8, but a matrix driving method or the like may be used.

FIGS. 5 (a) and 5 (b) show that a video signal in which a two-dimensional video and a three-dimensional video are mixed is input from a computer 70, and a voltage is applied to any one of the divided transparent electrodes 60a as diffusion area information. (Hereinafter referred to as barrier position information) is also input from the computer 70, and the diffusion effect area of the dispersion type liquid crystal layer 8 is partially generated based on the barrier position information. An example is shown. In FIG. 5B, the number of divided transparent electrodes 60a is six, and a0 to a3, b0 to b
3, reference numerals of c0 to c3 and d0 to d3 are added.

The video signal is sent from the video board 70a of the computer 70 to the video playback unit 74 of the video display device X.
, And the video reproduction unit 74 performs the operations shown in FIGS.
In this case, the image display liquid crystal layer 7 of the liquid crystal panel 1 is driven according to the image signal. To describe a specific example, the video signal is obtained by expanding video data stored in the computer 70 by the video board 70a and outputting the video data. For example, as shown in FIG. 1
The field is divided into left and right, and the left-eye image (L-
ch), and a format in which a right-eye image (R-ch) is placed on the right side is adopted. Upon receiving the video signal, the video reproducing unit 74 processes the video signal such that the left-eye video is incident on the left eye and the right-eye video is incident on the right eye. If the video reproducing unit 74 processes a video of a two-way split type format as shown in FIG. 6B, which is different from the above format, the computer 70 converts the format into such a format. The corresponding video signal may be generated on the video board 70a. Also,
If the video playback unit 74 is compatible with parallel input that can individually input the left-eye video (L-ch) and the right-eye video (R-ch), the computer 70 prepares two sets of video boards 70a, A video signal may be generated for each.

The barrier position information is supplied to the video display device X of this embodiment using RS232c as a communication interface. The drive circuit 72 provided in the video display device X obtains information obtained by decoding the barrier position information from the interface circuit 73, and controls ON / OFF of an arbitrary divided transparent electrode 60a according to this information. Specifically, the computer 70 codes the barrier position information, and supplies this to the video display device X using RS232c. The interface circuit 73 of the video display device X decodes the above code, and gives the drive circuit 72 the ON / OFF information of each divided transparent electrode 60a. The drive circuit 72 controls ON / OFF of the divided transparent electrode 60a according to ON / OFF information.

More specifically, as shown in the table of FIG. 7, for example, for a reproduced image A in which the entire screen is a three-dimensional image, barrier position information such as “all OFF” is set to, for example, “0000000000000000”. And supplies it to the video display device X using RS232c. Interface circuit 73 of video display device X
Decodes the above code, and provides the decoded information to the drive circuit 72. Then, the drive circuit 72 controls the divided transparent electrodes 60a so that the diffusion effect is OFF in all the screens. Thus, a three-dimensional video can be recognized on the entire screen. Also, for the reproduced video B in which the upper half of the screen is a three-dimensional video, “a0b0c0
Barrier position information such as “d0a1b1c1d1 OFF” may be coded and supplied as, for example, “0000000011111111”, whereby the diffusion effect is turned off only in the upper half of the screen, and a three-dimensional image can be observed in the upper half of the screen. At the same time, it is possible to view a two-dimensional video in the lower half of the screen without deterioration in image quality, and for the reproduced video C in which the left half of the screen is a three-dimensional video, “a0b0a1b1a2b2a3”
The barrier position information such as “b3 is OFF” is, for example, “00
11001100110011 "may be supplied and the diffusion effect is turned off only in the left half of the screen.
Thus, a three-dimensional image can be observed in the left half of the screen, and a two-dimensional image can be viewed in the right half of the screen without deterioration in image quality.

As described above, the second embodiment of the present invention
In the case of a three-dimensional video / three-dimensional video compatible display device, when a three-dimensional video and a two-dimensional video are mixed and formed on one screen, both the three-dimensional video and the two-dimensional video are improved in image quality. can do. In addition, since the liquid crystal panel 1 includes the dispersion type liquid crystal layer 8 and the image display liquid crystal layer 7, the suitable viewing distance can be shortened. Also, the number of parts can be reduced.

In the first or second embodiment, a plurality of transparent electrodes as shown in FIG. 4 are formed in the dispersion type liquid crystal layer 8 to operate the first or second embodiment. It may be performed.

[0046]

As described above, two-dimensional images or three-dimensional images
An image display liquid crystal layer for displaying a two-dimensional image and a distributed liquid crystal layer that is controlled so as to have a diffusion effect ON in the case of a two-dimensional image and controlled to have a diffusion effect OFF in a case of a three-dimensional image. Since it is configured with one liquid crystal panel, the suitable viewing distance can be shortened, and the number of components can be reduced.

In the case where the three-dimensional image display state and the two-dimensional image display state are mixedly formed on one screen, both the three-dimensional image and the two-dimensional image can have high image quality. , The suitable viewing distance can be shortened.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a 2D video / 3D video compatible display device according to a first embodiment.

FIG. 2 shows the diffusion effect of the dispersion type liquid crystal panel in FIG.
It is sectional drawing which showed the state set to N (left and right non-separation state).

FIG. 3 is a cross-sectional view illustrating a 2D video / 3D video compatible display device according to a second embodiment.

FIG. 4 is an electrode structure diagram of a distributed liquid crystal panel used in a 2D / 3D video compatible display device according to a third embodiment.

FIG. 5 (a) shows an image in which a two-dimensional image and a three-dimensional image are mixed in a two-dimensional image / 3-dimensional image compatible display device provided with a dispersed liquid crystal panel having the electrode structure of FIG. FIG. 4 is a schematic diagram showing a configuration example in which a signal is input, and FIG. 4B is a functional block diagram simply showing the internal configuration of FIG.

FIG. 6 is an explanatory diagram illustrating a format example of a three-dimensional video signal provided to a two-dimensional video / 3-dimensional video compatible display device according to a third embodiment.

FIG. 7 is a table showing an example of a relationship between a video signal in which a two-dimensional video and a three-dimensional video are mixed and barrier position information.

FIG. 8 is a plan view showing a configuration of a conventional 2D video / 3D video compatible display device.

9 shows the diffusion effect of the dispersion type liquid crystal panel in FIG.
It is the top view which showed the state set to N (left and right non-separation state).

[Explanation of symbols]

 L Pixel for left eye R Pixel for right eye 1 Liquid crystal panel 2, 3 Glass substrate 7 Image display liquid crystal layer 8 Dispersion type liquid crystal layer 9 Insulating layer 10 Color filter 11, 31, Spectral means 11a, 31a Transmission holes 11b, 31b Shielding hole 13 Reflector 14 Light absorbing plate 16 Backlight 20 Outgoing side polarizer 20, 30 2D video / 3D video compatible display device 60 Transparent electrode 61 Signal line 70 Computer 72 Drive circuit

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04N 5/66 102 H04N 5/66 102A 13/04 13/04

Claims (5)

[Claims] 1. A flat light source that emits light in a planar manner, a spectral unit that splits light from the flat light source into left and right lights, a dispersed liquid crystal layer that transmits or diffuses light from the spectral unit, and a first liquid crystal layer.
And a liquid crystal panel in which an image display liquid crystal layer constituting a display screen is connected by a pixel group of the second pixel group and a second pixel group via a transparent insulating layer, wherein the image display liquid crystal layer is a three-dimensional image. At the time of display, light from the spectroscopic means is transmitted, and the
A two-dimensional / three-dimensional image compatible display device, wherein the dispersion type liquid crystal layer is controlled so as to diffuse light from the spectroscopic means when displaying a two-dimensional image. 2. A planar light source that emits light in a planar manner, a spectral unit that splits the light from the flat light source into left and right lights, a dispersed liquid crystal layer that transmits or diffuses the light from the spectral unit, and a first liquid crystal layer.
And a liquid crystal panel in which an image display liquid crystal layer constituting a display screen is connected by a pixel group of the second pixel group and a second pixel group via a transparent insulating layer, wherein the image display liquid crystal layer is a three-dimensional image. When the image and the two-dimensional image are mixedly displayed, light from the spectroscopic unit is transmitted in a region corresponding to the three-dimensional image part, and light from the spectroscopic unit is transmitted in a region corresponding to the two-dimensional image part. A two-dimensional video / three-dimensional video compatible display device, wherein the dispersed liquid crystal layer is controlled so as to diffuse light. 3. A plurality of transparent electrodes are formed on at least one surface on both sides of the light input / output side of the dispersion type liquid crystal layer, and a voltage is selectively applied to the plurality of transparent electrodes. The two-dimensional video / three-dimensional video compatible display device according to claim 1 or 2, wherein: 4. A transparent electrode is formed on the surface of the image display liquid crystal layer on the insulating layer side, and a color filter is formed between the transparent electrode and the insulating layer. 4. A two-dimensional video / three-dimensional video compatible display device according to claim 1, wherein a liquid crystal driving electrode is formed on the surface. 5. The two-dimensional video / three-dimensional video compatible display device according to claim 1, wherein the insulating layer is made of a glass substrate.