JP3853722B2 - Display device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The invention disclosed in this specification relates to a display device that displays various types of information. In particular, the present invention relates to a display device capable of recognizing different images by a plurality of observers. For example, the present invention relates to a display device capable of independently viewing a plurality of images displayed on the same screen by a plurality of observers. The present invention also relates to an apparatus that selectively recognizes only specific information from among a plurality of images displayed simultaneously. The present invention also relates to an apparatus that can selectively view only specific information. It also relates to the display method.
[0002]
[Prior art]
Conventionally, techniques for displaying different images on the same screen are known. For example, there are known a method of dividing one screen and displaying a plurality of television programs at the same time, and a method of displaying a plurality of images superimposed on one screen.
[0003]
In the former method, since individual images are displayed independently, a large number of programs and images can be viewed relatively easily. However, the latter method has a problem that it becomes very difficult to see because a plurality of images overlap.
[0004]
In both methods, a plurality of images are displayed at the same time, and the viewing target must be selected on the viewing side.
[0005]
This is a problem when a plurality of different screens are viewed simultaneously by a plurality of people. For example, the above method cannot be used when displaying an image that is visible to an observer A and invisible to an observer B.
[0006]
[Problems to be solved by the invention]
An object of the invention disclosed in this specification is to provide a configuration in which a plurality of observers can independently see different images displayed on the same screen. That is, the present invention relates to a configuration in which images displayed on the same screen can be selected and viewed separately.
[0007]
[Means for Solving the Problems]
One of the inventions disclosed in this specification is shown in FIG.
A display device in which each of a plurality of observers can see a different image,
Means 11 for displaying different images on the same screen;
Means 13 and 14 for selecting the plurality of images for each observer;
It is characterized by having.
[0008]
In the above-described configuration, only a predetermined image can be selectively viewed by viewing two time-divided images displayed on the display device 11 with the glasses 13 and 14 equipped with an optical shutter.
[0009]
FIG. 1 shows an example in which two images are viewed separately. However, if the time division is further increased, more images can be viewed individually. In the configuration shown in FIG. 1, a desired image can be viewed by changing the shutter timing of the glasses indicated by 13 or 14. Further, if a shutter having the same timing is used by a plurality of people, the same image can be simultaneously viewed by a plurality of people.
[0010]
The configuration of another invention is as shown in a specific example in FIG.
A display device in which each of a plurality of observers can see a different image,
Means 11 for temporally dividing and displaying different images on the same screen;
Means 13 and / or 14 with an optical shutter;
Have
In the means 13 and / or 14 provided with the optical shutter, the optical shutter is opened and closed in accordance with the division timing, and one of the temporally divided images is selectively transmitted.
[0011]
In the above configuration, only necessary images can be selectively recognized by appropriately selecting glasses (for example, indicated by 13) which are means having an optical shutter. For example, it is possible to realize a state in which only a specific person can see a specific image or only a specific person cannot see a specific image when a plurality of people are watching the same screen.
[0012]
The configuration of another invention is as shown in a specific example in FIG.
A display device that allows each of a plurality of observers to see different images, and means for displaying a plurality of different images on the same screen in a time-divided manner (CRT in the figure);
Means for imparting different polarization states to at least one of the divided images (in the figure, means comprising a polarizing plate, a π cell and a quarter wavelength plate, or means comprising a π cell);
It is characterized by having.
[0013]
The above configuration is a filter that displays a plurality (or two or more) of images in a time-division manner, gives a specific polarization state to one of the images, and selectively transmits the polarization state. Is a device that selectively recognizes one of the previous images.
[0014]
For example, in the configuration shown in FIG. 3, the two time-divided images from the CRT are left-handed polarized light or right-handed polarized light by the polarizing plate and the quarter wavelength plate. Therefore, a specific polarization state is given to a specific image further time-divided using the π cell, and the polarization state is set to a clockwise circular polarization state. Here, two images can be selectively viewed by using clockwise circularly polarized glasses and counterclockwise circularly polarized glasses.
[0015]
The configuration of another invention is as shown in FIG.
Means 501 and 502 for displaying two images having different polarization states on the same screen 505, each of which is a display device in which a plurality of observers can see different images;
Means 506 and 507 for selectively transmitting the images of the different polarization states corresponding to the plurality of viewers, respectively;
It is characterized by having.
[0016]
The configuration shown in FIG. 5 projects two images projected from projection apparatuses (for example, liquid crystal projectors) 501 and 502 onto a screen (screen) 505 via polarizing plates 503 and 504 having different polarization directions. . Then, it is seen with glasses 506 provided with a polarizing plate having the same polarization direction as the polarizing plate 503 and glasses 507 provided with a polarizing plate having the same polarization direction as the polarizing plate 504. Then, the display projected from 501 can be selectively viewed through the glasses 506. Further, the display projected from 502 can be selectively viewed through the glasses 507.
[0017]
In this manner, the person wearing the glasses 506 and the person wearing the glasses 507 can see different images independently.
[0018]
The structure of another invention is as shown in FIGS.
A device that displays different images depending on the viewpoint using a lenticular lens or a parallax barrier,
A non-display area where no display is performed or an area where a predetermined background color is displayed is arranged between display data constituting different images.
[0019]
In the above configuration, the display data is defined as a display of a minimum unit constituting a pixel or an image.
[0020]
The configuration of another invention is as shown in FIG.
One of the plurality of images is selectively recognized by intermittently viewing a screen on which a plurality of time-divided images are displayed at a timing that matches the timing of the time division.
[0021]
That is, as shown in FIG. 2, in the state where the image of A composed of A0, A1... And the image of B composed of B0, B1. Let the observer recognize the A image composed of A0, A1,... And let the other observer recognize the B image composed of B0, B1,.
[0022]
As a means for intermittent viewing, it is preferable to use an optical shutter having a response speed as fast as possible. Further, in order to perform recognition as a continuous image, it is necessary to consider the time during which an afterimage remains when setting the timing for intermittent viewing. In addition, it is preferable to provide a time during which no image can be seen in order to reduce crosstalk between different images. That is, it is preferable to provide a time during which all the plurality of optical shutters are closed.
[0023]
The configuration of another invention is as shown in a specific example in FIG.
The plurality of images are individually recognized by viewing a screen 505 on which a plurality of images having different polarization states are displayed through a plurality of polarization filters 507 and 506 having different polarization states.
[0024]
In the configuration shown in FIG. 5, a spectacle type filter is used as the polarizing filter. However, as another configuration, as shown by 1203 and 1204 in FIG. 12, a configuration in which a polarizing filter is arranged in front of the eyes like a screen may be adopted.
[0025]
The configuration of another invention is as shown in a specific example in FIG.
By viewing a screen 505 on which a plurality of images including an image having a predetermined polarization state are displayed through a filter 506 or 507 that selectively transmits the predetermined polarization state, only the image having the predetermined polarization state is displayed. Is selectively recognized.
[0026]
[Action]
Different images can be displayed on the same screen by time division, and different images can be selected for each of a plurality of observers by using an optical shutter to select the different images in a timely manner. . Different images can be simultaneously viewed by a plurality of observers. In addition, a plurality of images can be selectively viewed by separately displaying a plurality of images while changing the polarization state and observing the images through a filter that transmits a specific polarization state.
[0027]
In addition, by displaying two images with different deflection states on the same screen and viewing the images using optical means that selectively transmits the different deflection states, it is possible to see different images depending on the observer. it can. In other words, images displayed on the same screen can be viewed independently by a plurality of observers simultaneously.
[0028]
Further, by separating and displaying a plurality of images using a lenticular screen, different images can be viewed independently by a plurality of observers.
[0029]
Also, by separating and displaying a plurality of images using a parallax barrier, different images can be viewed independently by a plurality of observers.
[0030]
In this way, multiple images are displayed simultaneously on the same screen, and those images are displayed.
・ Time division method
・ Method using polarization state
・ Method using lenticular screen or parallax barrier
Can be separated and viewed independently.
[0031]
By utilizing this, it is possible to display different images for each of a plurality of observers on the same screen.
[0032]
The configuration as described above can also be used to provide information only to a person for identification among a plurality of observations. Such a configuration can be used for various information display means, game machines, devices for teaching and learning, and the like. That is, by utilizing the fact that different images can be seen depending on the viewer, it can be used for applications that selectively provide various information and images to a plurality of observers.
[0033]
【Example】
[Example 1]
In this embodiment, a plurality of images are temporally divided and displayed on the same screen, and one of them is selected and viewed using an optical shutter, whereby different images are independently obtained by a plurality of observers. Concerning configurations that can be seen.
[0034]
FIG. 1 shows an outline of the configuration of this embodiment. In the configuration shown in FIG. 1, when an image displayed in a time-sharing manner on the screen of the display 11 is viewed using the glasses 13 and 14 equipped with a liquid crystal shutter, each observer using the glasses sees a different image. It relates to a configuration that can.
[0035]
FIG. 2 shows an operation timing chart used when the configuration shown in FIG. 1 is operated. As shown in FIG. 2, on the screen 11 which is a display screen, an A image and a B image are alternately displayed every other frame.
[0036]
In order to maintain an image quality of a certain level or more, it is preferable to set the time for one frame to 1/60 (s) or less.
[0037]
If this screen is viewed directly, the image of A and the image of B appear to overlap each other. Therefore, in the configuration shown in FIG. 1, by using the glasses 13 and 14 having the liquid crystal shutters that are selected to be transmissive / non-transmissive in accordance with the display timing, the observer wearing the respective glasses Make the image and the B image appear to be separated. Note that the liquid crystal shutters of the glasses are controlled by the control device 12 in a timely manner according to the screen display status. Although not so in FIG. 2, it is preferable that the opening / closing time of the shutter is shorter than the display time of one frame.
[0038]
As shown in FIG. 2, when the display of A0 is being performed, the liquid crystal shutter of the A glasses 13 is opened, and the person wearing the A glasses can see the display of A0. At this time, the liquid crystal shutter of the B glasses 14 is closed, so that the person wearing the B glasses cannot see the display of A0.
[0039]
Conversely, when the display of B0 in the next frame is being performed, the liquid crystal shutter of the B glasses 14 is opened, and the display of B0 is visible to the person wearing the B glasses. At this time, the liquid crystal shutter of the A glasses 13 is closed, so that the person wearing the A glasses cannot see the display of B0.
[0040]
In this way, A and B are displayed alternately, and the liquid crystal shutters of A glasses and B glasses are alternately switched between open and closed each time. In this way, an image indicated by A0, A1, A2, A3,... Selectively appears to a person wearing A glasses 13, and B0, B1, B2, B3,. It can be set as the condition where the image shown by.
[0041]
Thus, different images can be seen by the person wearing the glasses A13 and the person wearing the glasses B14 while viewing the same screen 11.
[0042]
[Example 2]
In this embodiment, the state of polarization is switched between a clockwise circularly polarized image and a counterclockwise circularly polarized image in a time-sharing manner, and the image is transmitted through clockwise circularly polarized light (clockwise circularly polarized glasses) When viewed with glasses that transmit left-handed circularly polarized light (left-handed circularly-polarized glasses), clockwise-circularly polarized glasses selectively recognize right-handed circularly-polarized images. The image is selectively recognized.
[0043]
FIG. 3 shows an example of a specific configuration of the configuration shown in this embodiment. In the configuration shown in FIG. 3, an image formed by the CRT is displayed in a time-sharing manner as shown in FIG. At the timing shown in FIG. 4, one frame displayed during 1/60 seconds is alternately displayed. In order to maintain high image quality, the length of one frame is preferably 1/60 seconds or less.
[0044]
The π cell is operated in synchronization with the display timing on the CRT. The π cell is driven by an element driver and directly transmits linearly polarized light that is incident when the driver output is ON. Further, the polarization state of the transmitted light is rotated by 90 ° with the driver output being OFF. The action of rotating the polarization state by 90 ° can be obtained by utilizing the optical rotation of the liquid crystal.
[0045]
The transmitted light that passes through the π cell has linear polarization states that are different from each other by 90 °, depending on whether the π cell is ON or OFF. Then, the light transmitted through the π cell is transmitted through the quarter-wave plate, so that it can be divided into light having a clockwise circular polarization state and light having a counterclockwise circular polarization state.
[0046]
In the case of the present embodiment, it is assumed that right-handed circularly polarized transmitted light is generated when the π cell is OFF, and left-handed circularly polarized transmitted light is generated when the π cell is ON. That is, the light transmitted through the quarter-wave plate becomes clockwise circularly polarized light and counterclockwise circularly polarized light according to ON / OFF of the π cell.
[0047]
The clockwise circularly polarized light and the counterclockwise circularly polarized light are alternately displayed every 1/60 seconds by time division display. In the configuration shown in FIG. 3, clockwise circularly polarized light and counterclockwise circularly polarized light are alternately projected on the quarter-wave plate.
[0048]
When this projected image is viewed with right-handed circularly polarized glasses and left-handed circularly polarized glasses, light of right-handed circularly polarized light can be selectively viewed with right-handed circularly polarized glasses. Further, the left-handed circularly polarized glasses can be selectively viewed with the left-handed circularly-polarized glasses.
[0049]
That is, as shown in FIG. 4, only a frame of A0, A1, A2,... Is visible to a person wearing clockwise circularly polarized glasses, and the image of A is selectively visible. Further, only the B0, B1, B2,... Frame can be seen by a person wearing left-handed circularly polarized glasses, and the B image can be selectively viewed.
[0050]
In the configuration shown in the present embodiment, it is not necessary to use glasses having special elements as in the configuration shown in FIG. 1, so that the burden on the person viewing the image can be reduced. In addition, the degree of freedom in viewing the image can be increased.
[0051]
Example 3
In this embodiment, two images with different deflection states are combined and projected, and the projected image is viewed using glasses that selectively transmit the respective deflected light. It is characterized by being selectively viewed by a person.
[0052]
FIG. 5 shows an outline of the configuration shown in this embodiment. FIG. 5 shows a configuration in which two liquid crystal projectors 501 and 502 project different images on a screen 505 that is a screen, and the projected images are viewed with polarized glasses 506 and 507.
[0053]
An image projected from the liquid crystal projector 501 is projected onto the screen 505 via the polarizing plate 503. The polarizing plate 503 has a function of transmitting linearly polarized light having a polarization direction in the vertical direction. Therefore, the image projected from the projector 501 onto the screen 505 has vertical linearly polarized light.
[0054]
On the other hand, an image projected from the liquid crystal projector 502 is projected onto the screen 505 via the polarizing plate 504. The polarizing plate 504 has a function of transmitting linearly polarized light having a polarization direction in the horizontal direction. Therefore, the image projected from the projector 502 onto the screen 505 has horizontal linearly polarized light.
[0055]
The polarizing glasses 506 have a function of transmitting vertical linearly polarized light. The polarizing glasses 507 have a function of transmitting linearly polarized light in the horizontal direction.
[0056]
Accordingly, by looking at the screen through the glasses 506, the image projected from the projector 501 onto the screen 505 can be selectively viewed. In other words, the image from the projector 501 can be viewed without viewing the image from the projector 502.
[0057]
Further, by looking at the screen through the glasses 507, an image projected from the projector 502 onto the screen 505 can be selectively viewed. That is, the image from the projector 502 can be viewed without viewing the image from the projector 501.
[0058]
That is, since the glasses 506 have a function of transmitting vertical linearly polarized light but not transmitting horizontal linearly polarized light, the image projected from 501 can be seen, but the image projected from 502 is displayed. Can not see.
[0059]
On the other hand, the glasses 507 have a function of transmitting the linearly polarized light in the horizontal direction but not transmitting the linearly polarized light in the vertical direction, so that the image projected from the 502 can be seen but the image projected from the 501 Can not see.
[0060]
In this way, a person wearing glasses 506 and a person wearing glasses 507 can see different images.
[0061]
FIG. 6 shows a timing chart for operating the configuration shown in FIG. In FIG. 6, one frame of an image projected from the projector 501 is indicated by Ai (i is a natural number including 0). One frame of the image projected from the projector 502 is indicated by Aj (j is a natural number including 0).
[0062]
In order to maintain general image quality, it is preferable that the length of one frame is 1/30 (s) or less.
[0063]
Two image frames are simultaneously superimposed and projected. The two images projected from the two projectors can be observed separately by the A spectacles observer and the B spectacles observer.
[0064]
FIG. 7 shows a block diagram of the configuration shown in FIG. As shown in FIG. 5, the configuration shown in the present embodiment can use a normal TV image or video image instead of a special image.
[0065]
Example 4
The present embodiment relates to a configuration in which a plurality of observers simultaneously view different images using a lenticular lens (lenticular screen). FIG. 8 shows a principle diagram of this embodiment. When a lenticular lens is used, different images can be seen by changing the viewpoint.
[0066]
For example, an image formed at point a on the screen can be recognized from the viewpoint of a ′, but other images cannot be recognized. (Of course, crosstalk exists, so it is not completely invisible)
[0067]
In the configuration shown in the figure, for example, display data A is given to a and b, display data B is given to c and d, display data C is given to e and f, and display data D is given to g and h. Thus, four different images can be seen at different viewpoint positions. Here, a and b refer to specific areas or pixels.
[0068]
Also, by giving A display data to a, b, c, and d and giving B display data to d, e, f, and g, two different images can be seen from different viewpoints.
[0069]
The method using the lenticular lens of this embodiment is to recognize different images depending on the position of the viewpoint. Therefore, there is a problem that other images can be seen by moving the position of the viewpoint. Another problem is that it is difficult to completely separate images displayed at points a and b, for example.
[0070]
In order to alleviate this problem, the same image data is given to nearby image points (points that focus on one point) so that different images are not observed even if there is a slight misalignment of viewpoints, and a wide range So that the same image can be seen. However, if the same image data is given to many pixels, the resolution of the image is lowered, so care must be taken.
[0071]
Specifically, in the state shown in FIG. 8, display data of image A is given to a to c, and display data of image B is given to e to g. In this way, the display data of the image A can be selectively viewed on the right side of the screen. That is, the display data of the image A can be selectively viewed without looking at the display data of the image B.
[0072]
On the other hand, the display data of the image B can be selectively viewed on the left side of the screen. That is, the display data of the image B can be selectively viewed without looking at the display data of the image A.
[0073]
The above-described appearance can be maintained even if the viewpoint is shifted to the left and right. That is, the selective appearance can be maintained.
[0074]
Example 5
In the method shown in the fourth embodiment, different images can be seen by looking at the screen from different viewpoints, and by utilizing this, different images can be seen simultaneously by a plurality of people.
[0075]
Here, it is assumed that display data of image A is given to a to c, and display data of image B is given to e to g. In this case, different images must be seen at the viewpoints d ′ and e ′. However, in practice, the images at the viewpoints d ′ and e ′ are overlapped or unclear.
[0076]
Specifically, the image A and the image B can be seen at the same time, or the image A and the image B can be seen at the same time or one at a time by a slight movement of the viewpoint. That is, crosstalk between the image A and the image B occurs.
[0077]
In order to suppress such a phenomenon, the present embodiment employs the following configuration. That is, in the state shown in FIG. 8, black or white or an appropriate background color is given as image data to the point d between the image points c and e, and an area where no image is displayed (non-display area) is provided. . In this way, crosstalk between image A and image B can be reduced.
[0078]
FIG. 9 shows a specific example of a method for suppressing crosstalk between different images by providing an area where the image is not displayed (non-display area). FIG. 9 shows an example in which the above configuration is realized by using an LCD (Liquid Crystal Field Optical Device).
[0079]
If the display is black and white, the non-display area is white or black. If the display is in color, an appropriate background color can be selected in addition to white or black.
[0080]
In the figure, the hatched area is a non-display area where black or white or an appropriate background color is displayed.
[0081]
(A) is shown for comparison, and a configuration in which crosstalk occurs between the image A and the image B is shown. Note that the region indicated by A, B, or the like may be a single pixel or a region composed of a plurality of pixels.
[0082]
(B) is a configuration that suppresses crosstalk between the pixel data of A and B by intentionally forming a non-display area indicated by diagonal lines in a predetermined area of the LCD.
[0083]
(C) is a further development of the configuration shown in (B), and is a configuration that suppresses crosstalk between pixel data indicated by AC. Also in this case, by forming a non-display area between the respective pixel data, crosstalk between the respective data can be reduced.
[0084]
The methods shown in (B) and (C) have a feature that a non-display area can be arbitrarily formed because an LCD (liquid crystal display device) is used. That is, the non-display area can be formed at an arbitrary place and in an arbitrary range, so that, for example, the case where image data A and B are displayed and the case where image data A to C are displayed are appropriately selected. be able to.
[0085]
Also, the degree of crosstalk can be changed. For example, by changing the area of the non-display area, it is possible to control the degree to which the image data A and the image data B are displayed together (it looks like that depending on the viewpoint).
[0086]
In addition, by appropriately setting the non-display area, an image A, an image in which images A and B overlap, and an image B can be viewed independently depending on the viewpoint. That is, although there are only two image data, three images can be viewed independently. The positions and ranges where these images can be seen can be set (adjusted) by using the LCD.
[0087]
In the configurations shown in (B) and (C) above, physical optical shielding means such as BM (black matrix) may be used to form the non-display area. However, in this case, there is an inconvenience that the position where the non-display area is formed is fixed and cannot be moved.
[0088]
FIG. 4D shows an example in which an optical shutter for selecting a non-display area is configured with a shutter LCD separately from the image forming LCD. With such a configuration, the non-display area can be formed only by the shutter LCD, or the non-display area can be formed by combining the shutter LCD and the image LCD. Can be bigger.
[0089]
As a display method shown in this embodiment, a method of directly forming an image using the LCD as described above can be mentioned first. Examples of other display means include a projection type liquid crystal display device. Further, a method of using a plurality of projection type display devices and overlaying images from them may be used.
[0090]
By performing operations as shown in FIGS. 9B to 9D, crosstalk between different images displayed at the same time can be reduced.
[0091]
Conversely, by controlling the crosstalk between different images, it is possible to intentionally display an image in which two images overlap with each other according to the viewpoint.
[0092]
Example 6
The present embodiment relates to an example in which a plurality of different images can be seen on a display surface when viewed from different viewpoints by using a parallax barrier.
[0093]
In this method, as shown in FIG. 10, slit-like aperture grills (parallax barriers) formed at predetermined intervals are provided, and the display surface is viewed through the slits, so that different images are seen depending on the position of the viewpoint. It can relate to the configuration.
[0094]
For example, in the configuration shown in FIG. 10, display data for image A is given to a and b, and display data for image B is given to d and e. In this way, the image of A can be selectively viewed from the viewpoint of a′b ′, and the image of B can be selectively viewed from the viewpoint of d′ e ′.
[0095]
Even when the configuration of the present embodiment is employed, crosstalk between different images may occur depending on the position of the viewpoint. Therefore, it is effective to apply a device as shown in the fifth embodiment.
[0096]
It is also useful to use an optical shutter using liquid crystal as a parallax barrier. In this case, since the width, position, and interval of the slit can be set as appropriate, it is easy to adjust the number of images to be displayed and the position of the viewpoint. In particular, being able to control the position of the viewpoint is useful for its application.
[0097]
Example 7
The present embodiment relates to a gaming apparatus using the configuration shown in the fourth embodiment (configuration shown in FIG. 8). The gaming device shown in FIG. 8 can see different images depending on the position (viewpoint) of viewing the screen (image display surface).
[0098]
Therefore, in this embodiment, an example in which the invention disclosed in this specification is used for a battle-type fighting game performed by two people is shown. FIG. 11 shows the positional relationship between the display surface and the two players.
[0099]
Two players 1101 and 1102 see the screen 1103 on which the image projected from the liquid crystal projector 1104 is displayed from different angles at the same time. The screen 1103 is a lenticular lens (lenticular screen) as shown in Example 4 (see FIG. 8).
[0100]
The player 1101 and the player 1102 can view different images. In order to increase the play effect, it is preferable that the screen 1103 has as large an area as possible. It is also important to determine the display method and the positional relationship between the two players so that cross-talk between the image from the player 1101's viewpoint and the image from the player 1102's viewpoint does not occur.
[0101]
FIG. 12 shows a configuration capable of obtaining the same effect as the configuration shown in FIG. 11 based on a principle different from the configuration shown in FIG. FIG. 12 shows a game in which two images having different polarization states are projected on a screen 1205 and separated by using filters 1203 and 1204 that transmit the respective polarization states. Different images are viewed at 1201 and 1202.
[0102]
Details of the configuration shown in FIG. 12 will be described below. In the configuration shown in FIG. 12, an image to be shown to the player 1201 is formed by the liquid crystal projector 1208, and an image to be shown to the player 1202 is formed by the liquid crystal projector 1209. Then, these images are transmitted through a polarizing plate 1206 that transmits light linearly polarized in the vertical direction and a polarizing plate 1207 that transmits light linearly polarized in the horizontal direction, and are projected onto the screen 1205 in an overlapping manner. Note that the screen 1205 may be a screen used for an ordinary projection display device.
[0103]
The player 1201 views an image projected on the screen 1205 through a polarizing plate 1203 that transmits light linearly polarized in the vertical direction. On the other hand, the player 1202 views an image projected on the screen 1205 through a polarizing plate 1204 that transmits light linearly polarized in the horizontal direction.
[0104]
As a result, the player 1201 selectively sees only the image projected from the liquid crystal projector 1208. On the other hand, the player 1202 selectively sees only the image projected from the liquid crystal projector 1209. In this way, the two players can see different images while looking at the same screen.
[0105]
FIG. 13 shows an example of an image that can be seen by each player when the game device as shown in FIG. 11 or 12 is used. FIG. 13 shows the contents of a game about martial arts. As shown in FIG. 13, each player can see the character operated by the opponent who is competing with the character operated by the player.
[0106]
Such a configuration can be said to be a remarkable feature that is possible because each of the fighting players can simultaneously see different images.
[0107]
When the configuration shown in FIGS. 11 and 12 is used, the number of screens to be displayed can be one, so that the configuration can be simplified. Further, the screen size can be increased as compared with the case where different screens are arranged.
[0108]
In this embodiment, an example is shown in which two players play a match-type game. However, this configuration can be used for education or learning. It can also be used to view different programs on a single screen. Also, it can be used when different displays are displayed on the same screen in public facilities.
[0109]
Example 8
This embodiment shows an apparatus for forming an image that can be used in the invention and embodiment disclosed in this specification. As an apparatus for forming an image, a CRT or a liquid crystal display (LCD) is generally used. In particular, LCDs are small and light, and can be made thinner, so they are expected to be used as display devices in the future.
[0110]
As an LCD, an active matrix liquid crystal display device integrated with a peripheral drive circuit in which an active matrix region and a peripheral drive circuit region are integrated on the same glass substrate or quartz substrate is reduced in size, weight, and manufacturing cost. It is useful in terms of lowness.
[0111]
Consider the case where the above configuration is applied to a projection-type liquid crystal display device capable of color display. In a projection-type liquid crystal display device capable of color display, an active matrix region is prepared corresponding to each of RGB in order to obtain a bright screen. In this case, it is necessary to integrate an RGB active matrix region and a peripheral drive circuit for driving the active matrix region on the same glass substrate or quartz substrate.
[0112]
In general, one drive circuit for the active matrix region requires a horizontal scan drive circuit and a vertical scan drive circuit. Therefore, when the integrated configuration as described above is adopted, the drive circuit must be formed in six regions.
[0113]
Since the peripheral driver circuit has a high degree of integration, manufacturing a large number of peripheral driver circuits on the same substrate causes a decrease in yield.
[0114]
Therefore, the active matrix type liquid crystal panel shown in this embodiment has a configuration in which a plurality of active matrix regions are arranged on the same substrate, and a horizontal scanning control circuit and / or a vertical scanning control circuit is provided for the plurality of active matrix regions. A common arrangement is used.
[0115]
FIG. 14 shows a schematic configuration of an integrated active matrix liquid crystal panel according to this embodiment. The configuration shown in FIG.
M and N are natural numbers of 2 or more,
On the board
An active matrix region for forming M × N images;
M + N peripheral circuit areas;
Has a configuration in which
Each of the M peripheral circuits simultaneously performs horizontal scanning control of N active matrix regions,
Each of the N peripheral circuits simultaneously performs vertical scanning control of M active matrix regions.
[0116]
FIG. 14 shows a case where M = 2 and N = 3 in the above configuration. FIG. 14 shows (M = 2) × (N = 3) active matrix regions 103, 104, 105, 106, 107, and 108 arranged.
[0117]
Further, 2 + 3 peripheral circuits 101, 102, 109, 110, and 111 are arranged as peripheral circuit regions for driving these active matrix circuits. Among these peripheral circuits, 101 and 102 are horizontal scanning control circuits. Reference numerals 109, 110, and 111 denote vertical scanning control circuits.
[0118]
In the configuration shown in FIG. 14, the horizontal scanning control circuits 101 and 102 simultaneously perform horizontal scanning control of the active matrix circuits 103, 104, and 105, and 106, 107, and 108, respectively.
[0119]
That is, the peripheral circuit 101 simultaneously performs horizontal scanning control of the active matrix regions 103, 104, and 105. Further, the peripheral circuit 102 is configured to simultaneously perform horizontal scanning control of the active matrix regions 106, 107, and 108.
[0120]
The peripheral circuits 109, 110, and 111 are configured to simultaneously perform vertical scanning control of the active matrix regions 103 and 106, 104 and 107, and 105 and 108, respectively.
[0121]
That is, the peripheral circuit 109 performs the vertical scanning control of the active matrix regions 103 and 106 simultaneously. The peripheral circuit 110 is configured to simultaneously perform vertical scanning control of the active matrix regions 104 and 107. In addition, the peripheral circuit 111 simultaneously performs vertical scanning control of the active matrix regions 105 and 108.
[0122]
The configuration shown in FIG. 14 has a configuration of N = 3 in order to obtain an RGB color image. However, M = N = 2 (ie 2 × 2) may be used. Alternatively, M = 2 and N = 1 may be set. Alternatively, M = 1 and N = 2 may be set. In this case, a configuration may be adopted in which a color image is obtained using RGB color filters in each active matrix region, or a monochrome image is obtained.
[0123]
As shown in FIG. 14, M × N active matrix regions are generally arranged in a matrix.
[0124]
In the active matrix region, pixels are arranged in a matrix,
At least one thin film transistor is disposed in the pixel,
The signal applied to the source of the thin film transistor is controlled by horizontal scanning control performed by each of the M peripheral circuits,
The signal applied to the gate of the thin film transistor is controlled by vertical scanning control performed by each of the N peripheral circuits.
[0125]
Examples of the pixel in the above configuration include an area indicated by addresses (0, 0), (1,0),... (M, 0) shown in FIG. In the configuration shown in FIG. 14, one thin film transistor is arranged for each pixel.
[0126]
Note that the number of thin film transistors arranged in each pixel is not limited to one. As the arrangement method, a plurality may be connected in series or may be arranged in combination with a MOS capacitor. Further, not only the same channel type combination but also different channel types may be combined.
[0127]
Note that the structure shown in FIG. 14 needs to transmit light through the liquid crystal panel, so that a light-transmitting material needs to be used for the substrate. Specifically, it is necessary to use a glass substrate or a quartz substrate.
[0128]
An operation example of the configuration shown in FIG. 14 will be briefly described. In the configuration shown in FIG. 14, the operations of the vertical scanning control circuits 109 to 110 are basically controlled by the operation clock of the vertical scanning control circuit indicated by CLKV. The operation of the horizontal scanning control circuit indicated by 101 and 102 is basically controlled by the operation clock of the horizontal scanning control circuit indicated by CLKH.
[0129]
In the following, an image display method in the active matrix region 103 will be described for the sake of simplicity. Note that the operation of other active matrix regions also follows the active matrix region 103.
[0130]
First, when a rising pulse of CLKV (operation clock of the vertical scanning control circuit) is input to the flip-flop circuit 202 of the vertical scanning control circuit 109, VSTA (vertical scanning timing enable signal) is punched out. At this time, the output of the flip-flop circuit 202 becomes H (logic level high) level. Further, the output level of the other flip-flop circuit of the vertical scanning control circuit 109 remains L.
[0131]
As a result, the gate signal line 211 indicated by the Y0 row becomes H level. The thin film transistors at addresses (0,0), (1,0),... (M, 0) are all turned on.
[0132]
In this state, in the flip-flop circuit 201 of the horizontal scanning control circuit 101, HSTA (horizontal scanning timing enable signal) is punched out by CLKH (operation clock of the horizontal scanning control circuit), and the signal level at the point of X0 becomes H. At this time, the points after X1 are L (logic level is low).
[0133]
As a result, an H signal is input to the sampling and holding circuit 204 via the image sampling signal line 208, and an R image data signal is taken into the sampling and holding circuit 204.
[0134]
Then, image data flows through the image signal line 209. That is, a signal of image data is applied to the source of the thin film transistor at the address indicated by (0,0), (0,1), (0,2)... (0, n).
[0135]
In this state, the thin film transistors at addresses (0,0), (1,0),... (M, 0) are all in the ON state, and (0,0), (0,1), (0 , 2)... An image data signal is applied to the source of the thin film transistor at address (0, n). Accordingly, image data is written in the pixel at address (0,0).
[0136]
Thereafter, the output of the flip-flop circuit 201 becomes L level by the rising edge of the next CLKH pulse. That is, the point of X0 becomes L level. On the other hand, in the flip-flop circuit 206, when the rising edge of the CLKH pulse is input, its output changes to the H level. That is, the point X1 is at the H level.
[0137]
As a result, information is written at address (1,0). In this way, the output of the flip-flop circuit Xm is sequentially shifted to the H level in accordance with the operation clock of CLKH. Then, the image information is sequentially written at the address (m, 0).
[0138]
After the writing of information in the Y0 row is completed, the output level of the flip-flop circuit 202 becomes L and the output level of the flip-flop circuit 203 becomes H by the rising edge of the CLKV signal. As a result, the signal level of the Y1 row becomes H.
[0139]
In the Y1 line, the image data information is sequentially written to the addresses (0, 1), (1, 1), (2, 1)... (M, 1). In this way, one frame is completed when the writing of information up to address (n, m) is completed.
[0140]
The above operation is performed at the same timing in other active matrix regions other than 103.
[0141]
When the integrated liquid crystal panel shown in FIG. 14 is used, two color images of RGB can be obtained simultaneously. Of course, the color images can have different contents.
[0142]
Here, a configuration in which six active matrix regions are integrated is shown. However, it is possible to further increase the number of active matrix regions to be integrated. For example, RGB, R′G′B ′, R, G, B, and nine active matrix regions can be integrated.
[0143]
In this case, in the configuration shown in FIG. 14, only one horizontal scanning control circuit needs to be added. In this case, three color images can be obtained.
[0144]
As described above, the integrated active matrix type liquid crystal panel whose basic configuration is shown in FIG. 14 is characterized in that it is not necessary to increase the number of peripheral drive circuits so much even if the active matrix area to be integrated is increased. Have.
[0145]
Specifically, if the number of active matrix regions to be integrated is M × N, the number of required peripheral drive circuits may be M + N. This is very useful when the integration is further increased.
[0146]
Example 9
This embodiment shows a projection type liquid crystal display device using a liquid crystal panel in which six active matrix regions shown in FIG. 14 are integrated. FIG. 15 shows an outline of a projection type liquid crystal display device shown in this embodiment.
[0147]
The display device shown in FIG. 15 can be used for the configuration of another embodiment disclosed in this specification.
[0148]
In the configuration shown in FIG. 15, the light from the first light source 602 is reflected by the mirror 604, and further split by the dichroic mirrors 608, 609, and 610 into light in a wavelength region corresponding to GBR. Each of these lights enters the integrated liquid crystal panel 611 shown in FIG.
[0149]
The light optically modulated in each pixel region corresponding to RGB of the liquid crystal panel 611 is reflected by the mirror 612, the G image is reflected by the half mirror (semi-transmissive mirror) 613, and the half mirror (semi-transmissive). The mirror image 614 reflects the R image.
[0150]
The synthesized color image is reflected by a mirror 617 through an optical system 615 and projected onto a screen (projection surface) 618. In the optical system 615, a lens necessary for enlarged projection is arranged. Further, the optical system 615 is provided with an optical shutter for selectively transmitting / not transmitting light as required and means for imparting a predetermined polarization state.
[0151]
On the other hand, the light from the light source 601 is reflected by the mirror 603, and further split by the dichroic mirrors 605, 606, and 607 into light corresponding to G′B′R ′. Then, these lights are optically modulated into an image corresponding to G′B′R ′ in the liquid crystal panel.
[0152]
The optically modulated light corresponding to R′G′B ′ (total 6 rays) is synthesized by a mirror group (not shown) and further projected through an optical system 615 and a mirror 616. The projected image is reflected by the mirror 617 and projected onto the screen 618.
[0153]
The integrated liquid crystal panel 611 (see FIG. 14) used in the configuration shown in FIG. 15 can form two different color images. Thus, this can be used to project two different color images onto the screen 618 simultaneously. Further, by setting the display timing, two different color images can be displayed in a time-sharing manner.
[0154]
The display device shown in FIG. 15 can be used for the image forming means in the configuration shown in FIGS. 1 and 3, FIG. 5, FIG. 8, FIG. 10, and FIG. 11 and FIG. In particular, the obtained image can be a color image.
[0155]
For example, when the time-division display as shown in FIGS. 1 and 3 is performed using the integrated liquid crystal panel shown in FIG. 14, the active matrix regions 103 to 105 in FIG. A2 frame is formed. Further, for example, frames indicated by B0, B1, B2,... In FIG.
[0156]
By doing so, the operating frequency of each horizontal scanning control circuit can be lowered, which is a useful configuration for improving the reliability of the circuit. When the time-division display as described above is performed with the configuration shown in FIG. 14, the types of CLKH and HSTA signals and their input methods must be different from those shown in FIG. That is, it is necessary to devise so that the formation of one frame performed by the horizontal scanning control circuit 101 and the formation of one frame performed by the horizontal scanning control circuit 102 are alternately performed.
[0157]
Further, when the display device shown in FIG. 15 is used in a configuration in which two images shown in FIG. 5 are combined and projected, one image (color image) is formed in the active matrix regions 103 to 105, and The other image (color image) may be formed in the active matrix regions 106 to 108. Then, these images may be synthesized on the screen 618.
[0158]
Further, when the display device shown in FIG. 15 is used in a configuration using the lenticular screen shown in FIG. 8 or the parallax barrier shown in FIG. 10, RGB images as indicated by 103 to 105 as many as required. As shown in FIG. 14, the active matrix regions for forming the images are integrated and each image is formed by a set of the active matrix regions.
[0159]
Such a configuration is significant in that the burden on the horizontal scanning control circuit does not increase even if the number of images to be formed increases.
[0160]
【The invention's effect】
A plurality of images displayed on the same screen can be viewed independently by utilizing a difference in display timing, a difference in polarization state, and a difference in viewpoint position. Such a configuration is a means for providing a plurality of information simultaneously using the same screen, a means for selectively providing information to a specific person or direction, a game device, and a plurality of image information independently by a plurality of persons. It can be used for viewing, etc.
[0161]
That is, in a method that conventionally required a plurality of display screens on which images are displayed, one display screen can be provided. As a result, the area of the display screen can be increased, and the overall configuration can be simplified.
[Brief description of the drawings]
FIG. 1 is a diagram showing an overview of a display device that allows multiple people to view different images at the same time using time-division display.
FIG. 2 is a diagram showing an example of an operation timing chart when operating the configuration shown in FIG. 1;
FIG. 3 is a diagram showing an overview of a display device that allows a plurality of people to simultaneously view different images by changing the polarization state by time-division display.
4 is a diagram showing an example of an operation timing chart when operating the configuration shown in FIG. 3; FIG.
FIG. 5 is a diagram showing an outline of a display device that allows different images to be viewed simultaneously by a plurality of people using the difference in polarization state.
6 is a diagram showing an example of an operation timing chart when operating the configuration shown in FIG. 5; FIG.
7 is a block diagram showing an electrical configuration of the configuration shown in FIG.
FIG. 8 is a principle view when different images are viewed simultaneously by a plurality of people using a lenticular lens.
FIG. 9 is a diagram showing an example in which a plurality of images are displayed using a lenticular lens.
FIG. 10 is a diagram illustrating an example in which a plurality of images are displayed using a parallax barrier.
FIG. 11 is a diagram showing an outline of a configuration for displaying a plurality of images using a lenticular lens or a parallax barrier.
FIG. 12 is a diagram showing an outline of a configuration for displaying a plurality of images using different polarization states.
FIG. 13 is a diagram showing an example of an image displayed on the screen of the game device using the device shown in FIG.
FIG. 14 shows a schematic configuration of an integrated active matrix liquid crystal panel for forming an image.
15 is a diagram showing a schematic configuration of a projection display device using the liquid crystal panel shown in FIG.
[Explanation of symbols]
11 Display
12 Control device
13, 14 Glasses with optical shutter
501, 502 LCD projector
503, 504 Polarizing plate
505 screen
506, 507 Polarized glasses
1101, 1102 observer
1103 Lenticular Lens
1104 LCD projector
1201, 1202 Observer
1203, 1204 polarizing plate
1205 screen
1206, 1207 Polarizing plate
1208, 1209 LCD projector
101, 102 horizontal scanning control circuit
103, 104, 105 Active matrix region (pixel region) for optically modulating RGB images
106, 107, 108 Actuators for optically modulating the image of R′G′B ′
Live matrix area (pixel area)
109, 110, 111 Vertical scanning control circuit
201, 206 Flip-flop circuit of horizontal scanning control circuit
202, 203 Flip-flop circuit of vertical scanning control circuit
204, 205 Sampling hold circuit
207, 211 Gate signal line
208, 210 Image sampling signal line
209 Image signal line
601 and 602
603, 604 mirror
605, 606, 607 Dichroic Mi for separating RGB light
608, 609, 610 Dichroic Mi for separating RGB light
611 LCD panel
612 mirror
613, 614 half mirror
615, 616 optical system
617 mirror
618 screen (projection surface)

Claims (5)

A display device that forms a plurality of different images and non-display areas with a plurality of pixels arranged on the same display surface ;
A parallax barrier positioned between the observer and the display device;
The display device includes a first case of forming the said non-display area between the different first and second image and the first and second images with each other, and a different third to fifth image from each other A second case in which the non-display area is formed between each of the third to fifth images.
In the first case, the parallax barrier causes the observer at the position of the first viewpoint to recognize the first image, and the position of the second viewpoint different from the position of the first viewpoint. The second image is recognized by the observer at the same time, and in the second case, the third image is recognized by the observer at the position of the third viewpoint. An observer at a fourth viewpoint position different from the position of the viewer, and the fourth image is recognized, and the observation is at a fifth viewpoint position different from the third viewpoint position and the fourth viewpoint position. A display device for causing a person to recognize the fifth image . In claim 1 ,
An optical shutter is used as the parallax barrier. In claim 2 ,
The display device, wherein the optical shutter is configured using liquid crystal. A display device that forms a plurality of different images and non-display areas with a plurality of pixels arranged on the same display surface ;
A lenticular lens positioned between an observer and the display device;
The display device includes a first case of forming the said non-display area between the different first and second image and the first and second images with each other, and a different third to fifth image from each other A second case in which the non-display area is formed between each of the third to fifth images.
In the first case, the lenticular lens causes the observer at the first viewpoint position to recognize the first image, and at a second viewpoint position different from the first viewpoint position. The second image is recognized by the observer, and in the second case, the third image is recognized by the observer at the position of the third viewpoint and the position of the third viewpoint. An observer who is in a fourth viewpoint position different from the fourth viewpoint recognizes the fourth image and is in a fifth viewpoint position different from the third viewpoint position and the fourth viewpoint position. A display device for recognizing the fifth image . In any one of Claims 1 thru | or 4 ,
The non-display region, the display device, wherein in the pixel black, a region formed by the display of white or background color.

Images