JP7061167B2 - Display device - Google Patents

Description

The present invention relates to a display device.

For example, Patent Document 1 describes a display device capable of making the display distance of an image variable. Further, Patent Document 1 describes that a plurality of screens (display units) are arranged at intervals.

By the method described in Patent Document 1, it is possible to display a plurality of images at different depth positions to give a sense of depth.

Japanese Unexamined Patent Publication No. 2009-150947

However, in the case of the method shown in Patent Document 1, since the screens are arranged at intervals, the projected light leaks from between the screens, the observer feels dazzling, and slits and the like are observed depending on the viewpoint. It ends up. Therefore, no consideration is given to the continuous display over a plurality of screens.

Therefore, in view of the above-mentioned problems, it is an object of the present invention to provide, for example, a display device capable of seamlessly displaying depth on a plurality of display units.

In order to solve the above problem, the invention according to claim 1 comprises a plurality of display units arranged at different distances from the observer, and a control unit for displaying an image on the plurality of display units. The plurality of display units include a first area that is a part of at least one display unit of the plurality of display units, and another display unit that is adjacent to the one display unit and is arranged on the observer side. The second region, which is a part of the above, is arranged so as to overlap with each other when viewed from the observer, and the control unit is characterized in that an image based on the partial image displayed in the first region is displayed in the second region. It is a display device.

The invention according to claim 10 includes a plurality of display units arranged at different positions from the observer, and a control unit for displaying an image on the plurality of display units. The unit is an image displayed in a first area that is a part of at least one of the plurality of display units, and another display unit arranged on the observer side of the one display unit. The display device is characterized in that an image is displayed on each of the plurality of display units so that the images displayed in a part of the second region overlap each other when viewed from the observer.

It is a schematic block diagram of the display device which concerns on 1st Embodiment of this invention. It is explanatory drawing of the display of the image projected on the screen shown in FIG. FIG. 3 is an explanatory diagram of how the projected light projected on the screen shown in FIG. 1 is viewed by an observer. It is explanatory drawing of the processing method for displaying on the screen shown in FIG. 1 without a break. It is explanatory drawing of the appearance from an observer when the image processed by the method described with FIG. 4 is displayed on a screen. It is a schematic block diagram of the head-up display provided with the display device which concerns on the 2nd Embodiment of this invention. It is a schematic block diagram of the display device which concerns on 3rd Embodiment of this invention. FIG. 7 is a schematic cross-sectional view of the screen shown in FIG. It is explanatory drawing of the example of the relationship between the screen and the line of sight shown in FIG. 7. It is a timing chart of the operation of the display device shown in FIG. 7. It is a schematic block diagram of the head-up display provided with the display device which concerns on 4th Embodiment of this invention. It is explanatory drawing of the adjustment of the superimposition period in the image control apparatus shown in FIG. It is explanatory drawing of the adjustment of the superimposition period in the image control apparatus shown in FIG. It is explanatory drawing of the adjustment of the superimposition period in the image control apparatus shown in FIG. It is a schematic block diagram of the head-up display provided with the display device which concerns on other embodiment of this invention. It is a timing chart of the operation of the display device shown in FIG. It is a schematic block diagram of the head-up display provided with the display device which concerns on other embodiment of this invention. It is a timing chart of the operation of the display device shown in FIG. It is a schematic block diagram of the amusement machine provided with the display device which concerns on other embodiment of this invention. It is a display example of the amusement machine shown in FIG. It is explanatory drawing of other form of a screen. It is explanatory drawing of the display example shown in FIG.

Hereinafter, a display device according to an embodiment of the present invention will be described. The display device according to the embodiment of the present invention includes a plurality of display units for displaying images at different positions from the observer, and a control unit for displaying an image on the plurality of display units. The plurality of display units are a part of a first area which is a part of at least one display unit among the plurality of display units and a part of another display unit which is adjacent to one display unit and is arranged on the observer side. The second area is displayed so as to overlap with each other when viewed from the observer, and the control unit causes the second area to display an image based on the partial image displayed in the first area. By doing so, at least a part of the display unit is displayed so as to overlap with each other, so that leakage of light or the like can be reduced as much as possible. Further, in the portion where one display unit and the other display unit overlap, an image based on the partial image displayed in the first area (for example, the same content) is also displayed on the other display unit on the front side. Therefore, it is possible to prevent the image from being chipped at the overlapping portion.

In addition, the plurality of display units can be switched between a transmission state that transmits light and a scattering state that scatters light, and the control unit can be used for the switching period between the scattering state and the transmission state of one display unit and others. The switching period between the transmission state and the scattering state of the display unit may be controlled so as to be the period during which the partial image is displayed. By doing so, since the transition from the transmission state to the scattering state is made during the period when the image based on the partial image displayed in the first region is displayed in the two overlapping regions, the influence on the display by switching the display portion. Can also be suppressed.

Further, the control unit may set the display period of the image related to the portion of the partial image displayed in the first region where the image is not visually recognized by the observer as the switching period between the scattering state and the transmission state. By doing so, the display units overlap, and the display can be switched to another display unit in a portion that cannot be visually recognized by the observer. Therefore, leakage of light or the like can be suppressed at the time of switching.

Further, a temperature detection unit for detecting the temperature around the display unit may be further provided, and the control unit may change the range of the first region and the second region based on the detection result of the temperature detection unit. By doing so, it is possible to cope with the change in the switching period to the scattering state or the like depending on the temperature. Therefore, even if the temperature around the display unit changes, it is possible to suppress image chipping, leaked light, and the like.

Further, the line-of-sight detection unit for detecting the line of sight of the observer may be further provided, and the control unit may change the range of the first region and the second region based on the detection result of the line-of-sight detection unit. By doing so, it is possible to adjust the range of the first region and the second region according to the position of the observer to display without a break.

Further, the control unit includes three or more display units, and the control unit causes at least two adjacent display units among the plurality of display units to display an image based on the partial image displayed in the first area in the second area. The remaining display unit may be controlled so that an image based on the partial image displayed in the first area is not displayed. By doing so, it is possible to mix the continuous depth display and the flat display.

Further, the display method according to the embodiment of the present invention includes a plurality of display units in which the distances from the observer are displayed at different positions, and the plurality of display units are at least one of the plurality of display units. The first area, which is a part of the display unit of the above, and the second area, which is a part of another display unit adjacent to the one display unit and arranged on the observer side, are displayed so as to overlap with each other when viewed from the observer. The display method of the display device includes a control step of displaying an image on each of a plurality of display units, and the control step displays an image based on a partial image displayed in the first area in the second area. .. By doing so, at least a part of the display unit is displayed so as to overlap with each other, so that leakage of light or the like can be reduced as much as possible. Further, in the portion where one display unit and the other display unit overlap, an image based on the partial image displayed in the first area (for example, the same content) is also displayed on the other display unit on the front side. Therefore, it is possible to prevent the image from being chipped at the overlapping portion.

Further, the display program may be characterized in that the above-mentioned display method is executed by a computer. By doing so, in the portion where one display unit and the other display unit overlap each other using a computer, the image based on the partial image displayed in the first area (for example, the same content) is on the front side. Since it is also displayed on other display units, it is possible to prevent the image from being chipped at the overlapping portion.

Further, the above-mentioned display program may be stored in a computer-readable recording medium. By doing so, the program can be distributed as a single unit in addition to being incorporated in the device, and version upgrades and the like can be easily performed.

The display device 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 5. As shown in FIG. 1 and the like, the display device 1 is a device that displays the projected light from the projector 3, and includes a video control device 6 and a screen 13.

The projector 3 projects an image to be displayed using, for example, an LED (light emitting diode) or a laser as a light source on the screen 13 of the display device 1 via the mirror 4.

The image control device 6 as a control unit performs a processing process described later on an image (image) input from the outside, an image stored inside, or the like, and outputs the image to the projector 3.

The screen 13 as a display unit includes four screens 13a, 13b, 13c, and 13d. The screen 13a is composed of a transparent screen such as a microlens array or a light scattering sheet, and is formed in a rectangular shape. In this embodiment, the screens 13a, 13b, 13c, and 13d have a strip shape, but may have another rectangular shape such as a square. Further, it may be a self-luminous display (EL (Electro-Luminescence) display or the like) that does not require the projector 3.

Next, a video display using the display device 1 having the above-described configuration will be described with reference to FIGS. 2 to 5. FIG. 2 is an explanatory diagram of the display of the image projected on the screen 13. In FIG. 2, only the screens 13a, 13b, 13c, and 13d are shown for simplification. As shown in FIG. 2, an image is projected on the screens 13a, 13b, 13c, and 13d from the projector 3 as a projection unit. At this time, the display device 1 is arranged so that the light rays of the projected light always cover (overlap) one or more screens so that the projected light does not leak between the screens 13a, 13b, 13c, and 13d.

FIG. 3 shows how the projected light projected on the screen 13 is seen by the observer. FIG. 3A shows the display state of the screen as seen from the side on which the projected light is projected, and FIG. 3B shows the view from the observer of FIG. 3A. In FIG. 3, the image output from the image control device 6 is projected from the projector 3 onto the screens 13a, 13b, 13c, and 13d as projected light.

When the projected light is projected onto the screens 13a, 13b, 13c, and 13d as shown in FIG. 3A, the observer shown in FIG. 2 sees the projection light as shown in FIG. 3B and feels the depth. It becomes a display (depth display).

Next, the images displayed on the screens 13a, 13b, 13c, and 13d will be described. As described above, the screens 13a, 13b, 13c, 13d are arranged so that the projected light from the projector or the like does not leak, so that the observer can see the screens 13a, 13b, 13c, 13d in the lateral direction. The ends overlap. Therefore, when the images to be displayed on the screens 13a, 13b, 13c, and 13d are simply divided by the number of screens, the images appear to be missing at the boundaries of the screens. Therefore, in this embodiment, the original image is processed and displayed by the image control device 6. The processing method will be described with reference to FIGS. 4 and 5.

The original image of FIG. 4 is an image before processing. The end of the entire video period is deleted from this original video to make it look like a processed video. Of the processed video, the video period displayed on each screen is the occupancy period, and the period corresponding to the portion deleted from the original video is the superimposition period.

The superimposition period is a period inserted during the occupancy period, which is the image period displayed on each screen, in the projected image (image output to a projector or the like). Of the superimposition period, the period during which the light beam of the projected light is applied to the screen on the back side when viewed from the observer and cannot be visually recognized by the observer is a switching period, and processing such as turning off the image or inserting a black image is performed. Then, the remaining period obtained by subtracting the switching period from the superimposition period is the adjustment period for the line-of-sight deviation.

In this adjustment period, the same image as the beginning part of the occupancy period after the adjustment period is displayed. For example, on the screen displaying the uppermost portion of the image of FIG. 4, the image corresponding to the occupancy period a and the adjustment period ab is projected. That is, in the example of FIG. 4, the area of the screen 13a on which the image related to the adjustment period is displayed becomes the first area which is a part of one display unit, and the screen on which the same image as the image related to the adjustment period is displayed is displayed. The area of 13b becomes the second area which is a part of the other display unit. Therefore, the images displayed in these areas are the partial images displayed in the first area and the second area. That is, the lower end portion of the screen 13a displaying the portion related to this adjustment period is the first area, and the upper end portion of the screen 13b is the second portion displaying the same display content as the portion displayed in this adjustment period. It becomes an area. By doing so, as shown in FIG. 5, there is no chipping in the image seen by the observer, and the image can be displayed without a break.

In the above description, the partial images have the same contents in the first region and the second region, but they are not exactly the same, and the brightness and resolution may be different, and correction is added to either image. It may be an image. That is, there may be a difference between the image and the range that the observer can see if there is no break. That is, the image based on the partial image displayed in the first region may be displayed in the second region.

According to this embodiment, the screens 13a, 13b, 13c, 13d in which the distances from the observer are displayed at different positions, the image control device 6 for displaying images on the screens 13a, 13b, 13c, 13d, respectively, and the like. It is equipped with. The screens 13a, 13b, 13c, and 13d are displayed so that the lower end of the screen 13a and the upper end of the screen 13b of the screens 13a, 13b, 13c, and 13d overlap each other when viewed from the observer. Displays the same partial image on the upper end of the screen 13a and the lower end of the screen 13b. By doing so, for example, the ends of the screens 13a and 13b are arranged so as to overlap each other, so that leakage of light or the like can be reduced as much as possible. Further, in the portion where the screen 13a and the screen 13b overlap, the same content is displayed on the screen 13b on the front side, so that it is possible to prevent the image from being chipped in the overlapping portion.

Next, the display device according to the second embodiment of the present invention will be described with reference to FIG. The same parts as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.

This embodiment is an example of applying the above-mentioned display device 1 to a head-up display. As shown in FIG. 6, the head-up display 100 includes a display device 1, a field lens 2, a projector 3, a mirror 4, and a combiner 7, and is mounted on a vehicle such as an automobile.

The field lens 2 collects the light emitted from the display device 1 in the direction of the combiner 7.

The mirror 4 reflects the projected light projected from the projector 3 toward the display device 1.

The image control device 6 according to the present embodiment generates an image to be displayed as a virtual image or acquires it from the outside, performs the processing described with reference to FIG. 7 and the like, and outputs the image to the projector 3.

The combiner 7 is provided on, for example, the windshield (also referred to as a windshield) of an automobile, and reflects the light emitted from the field lens 2 (image light) toward the observer.

In the head-up display 100 described above, the image output from the image control device 6 is projected as image light from the projector 3, reflected by the mirror 4, and projected onto the screen 13 of the display device 1. The image projected on the screen 13 is reflected by the combiner 7 toward the observer via the field lens 2, and is visually recognized by the observer as a virtual image V at the tip of the combiner 7 (windshield). ..

Also in this virtual image V, the plurality of virtual images are displayed at different positions from the observer, and the region corresponding to the first region and the region corresponding to the second region in the virtual image are displayed so as to overlap each other when viewed from the observer.

According to this embodiment, since the display device 1 is used for the head-up display 100, the virtual image V visually recognized by the observer on the head-up display 100 can be continuously displayed.

Next, the display device according to the third embodiment of the present invention will be described with reference to FIGS. 7 to 10. The same parts as those of the first and second embodiments described above are designated by the same reference numerals, and the description thereof will be omitted.

The basic configuration of this embodiment is the same as that of the display device 1 shown in the first embodiment, but the size and elements of the screen 13 (13f, 13g, 13h, 13i) are different.

FIG. 7 shows a schematic configuration of the display device 1A according to this embodiment. Similar to the first embodiment, the display device 1 is a device that displays the projected light from the projector 3, and includes a video control device 6, a screen drive device 8, and a screen 13.

The screen 13 of the present embodiment has the same height direction and has substantially the same length as the combined length of the screens 13a, 13b, 13c, 13d of the first embodiment in the height direction. That is, the screens 13f, 13g, 13h, and 13i are arranged so that substantially the entire surfaces overlap with each other.

Further, as the screen 13 in this embodiment, a screen whose optical state changes by applying a voltage is used. As for the optical state of the screen 13, the scattered state is the image state, and the transparent transmitted state in which the scattering of the incident light is smaller and the parallel light transmittance is higher than that is the non-image state. That is, it is possible to switch between a transmission state and a scattering state for light.

The screen 13 may be, for example, a dimming screen using a liquid crystal material and changing the scattered state and the transparent transmission state in which the scattering of incident light is small. The dimming screen includes, for example, a screen using a liquid crystal element such as a polymer-dispersed liquid crystal.

FIG. 8 shows a schematic cross-sectional view of the screen 13 whose optical state can be controlled. The screen 13 shown in FIG. 8 has an optical layer 25 in which a composite material containing a liquid crystal display or the like is sandwiched between a pair of transparent glass plates 21 and 22. A common electrode 23 is formed on the optical layer 25 side of one of the glass plates 21. A scan electrode 24 is formed on the optical layer 25 side of the other glass plate 22. An intermediate layer made of an insulator may be formed between the electrodes 23 and 24 and the optical layer 25.

Further, the common electrode 23 and the scan electrode 24 are formed as transparent electrodes by, for example, ITO (indium tin oxide). The optical layer 25 is arranged between the common electrode 23 and the scan electrode 24.

A voltage is applied to the screen 13 so as to generate a potential difference between the scan electrode 24 as the first electrode and the common electrode 23 as the second electrode. The optical state in the optical layer 25 changes depending on the applied voltage of the common electrode 23 and the scan electrode 24.

The screen 13 is classified into a reverse mode and a normal mode according to a state when a voltage is applied so as to generate a potential difference. In the screen 13 operating in the reverse mode, the screen 13 is in a transparent transparent state in a normal state in which no voltage is applied. When a voltage is applied, the scattering rate of parallel rays corresponding to the applied voltage becomes scattered. In the screen operating in the normal mode, the screen 1 is in a scattered state in a normal state in which no voltage is applied. When a voltage is applied, a transparent transmission state with a parallel light transmittance corresponding to the applied voltage is obtained. As for the optical state of the screen 13, a predetermined scattering state corresponds to an image state, and a transparent transmission state having a higher parallel light transmittance corresponds to a non-image state. In the following description, the reverse mode will be used, but the normal mode can also be applied.

Similar to the first embodiment, the image control device 6 performs the above-mentioned processing process on the image input from the outside or the image stored inside, and outputs the image to the projector 3.

The screen drive device 8 controls the transmission state / scattering state of the screens 13f, 13g, 13h, and 13i, controls the projection timing of the projector 3, and the like in order to perform the drive described later.

Next, the operation of the screen 13 described above will be described with reference to the timing chart of FIG. As shown in FIG. 9, FIG. 10 is arranged in the order of screens 13i, 13h, 13g, and 13f from the observer side. The display image of FIG. 10 is the same as that of FIG. Further, the image corresponding to the screen 13a of FIG. 3 is displayed in the area 13f1 of the screen 13f, and the image corresponding to the screen 13b of FIG. 3 is displayed in the area 13g1 of the screen 13g. The image corresponding to the screen 13c of FIG. 3 is displayed in the area 13h1 of the screen 13h, and the image corresponding to the screen 13d of FIG. 3 is displayed in the area 13i1 of the screen 13i. That is, the screens 13f, 13g, 13h, and 13i are formed with electrodes so that only the above-mentioned regions can be in a scattered state.

In the display period of FIG. 10, f indicates the display period of the screen 13f, g indicates the display period of the screen 13g, h indicates the display period of the screen 13h, and i indicates the display period of the screen 13i. Of the display periods, the occupancy period fs, gs, hs, is, the superimposition period fc, gc, hc, and the switching period fk, gk, hk are the occupancy period, superimposition period, and switching described in the first embodiment. Corresponds to the period.

The video signal is a decomposition of the displayed video for each display period. The control signal f is a switching signal (Hi makes the scattering state) between the transmission state and the scattering state for the screen 13f output by the screen drive device 8. Similarly, the control signal g is a signal for switching between a transmission state and a scattering state for the screen 13g output by the screen drive device 8, and the control signal h is a transmission state and a scattering state for the screen 13h output by the screen drive device 8. The switching signal and the control signal i are switching signals between the transmission state and the scattering state for the screen 13i output by the screen drive device 8.

The optical characteristic f is an optical characteristic of the screen 13f (Hi is in a scattered state). Similarly, the optical characteristic g is the optical characteristic of the screen 13g, the optical characteristic h is the optical characteristic of the screen 13h, and the optical characteristic i is the optical characteristic of the screen 13i.

As shown in FIG. 10, in the present embodiment, the screen drive device 8 uses the control signals f, g, so that the transition period (the period between the rise and fall of the optical characteristics) at which the screen 13 is switched is the switching period. Generate h and i. For example, the falling timing of the control signal f and the rising timing of the control signal g are controlled by the screen drive device 8 so that the falling period of the optical characteristic f and the rising period of the optical characteristic g are the periods of the switching period fk. ing. That is, for example, the screen driving device 8 (control unit) has a switching period from the scattered state of the screen 13f (one display unit) to the transmission state and a switching period from the transmission state of the screen 13g (another display unit) to the scattering state. However, the display period (switching period fk) of the partial image is controlled so as to cover the portion of the partial image in which the image is not visually recognized by the observer.

According to this embodiment, for example, the switching period fk, which is the display period of the image applied to the portion of the partial image displayed in the superimposition period fj where the image is not visually recognized by the observer, is set as the switching period from the transmission state to the scattering state. .. By doing so, it is possible to switch the display to another screen in a portion where the screens overlap and cannot be seen by the observer. Therefore, leakage of light or the like can be suppressed at the time of switching.

Further, on the screens 13f, 13g, 13h, and 13i that can be switched between the transmission state and the scattering state, the depth display is performed by sequentially transitioning the period of the scattering state between the screens. By doing so, the region to be in the scattered state can be made into an arbitrary region by dividing the electrode.

The switching period from the scattering state to the transmission state and the switching period from the transmission state to the scattering state described above are preferably set to the above-mentioned switching period fk or the like, but may be a superposition period. Since the superimposed period always includes the period in which the same image (partial image) is displayed, it is possible to suppress the influence on the display at the time of switching.

Further, in the above description, the scattering state changes in the order of the screens 13f, 13g, 13h, and 13i, but conversely, the screens 13i, 13h, 13g, and 13f may change in this order. In this case as well, by performing the same as above, it is possible to suppress the influence on the display at the time of switching. That is, the switching period between the scattering state and the transmission state of one display unit and the switching period between the transmission state and the scattering state of the other display unit may be controlled to be the period during which the partial image is displayed.

Next, the display device according to the fourth embodiment of the present invention will be described with reference to FIGS. 11 to 20. The same parts as those of the first to third embodiments described above are designated by the same reference numerals, and the description thereof will be omitted.

This embodiment shows an application example of the display device 1A including the configuration described in the third embodiment.

FIG. 11 is a head-up display 100A in which the head-up display 100 shown in FIG. 6 is provided with a line-of-sight detector 11 as well as a display device 1A. The line-of-sight detector 11 as a line-of-sight detection unit is composed of, for example, a camera, and detects the line of sight of the observer by a well-known method from the positional relationship between the inner corner of the eye of the observer and the iris. The method of detecting the line of sight is not limited to the method described above, and may be another method.

The image control device 6 adjusts the superimposition period in the image output to the projector 3 based on the result of the line-of-sight detection by the line-of-sight detector 11. The adjustment method will be described with reference to FIGS. 12 to 14. FIG. 12 shows a case where the screen 13 is observed from the front (θ = 0 °) when the screen 13 is arranged as shown in FIG. 12 (a). In this case, the superimposition periods Tc1-1 and Tc1-2 as shown in FIG. 12B are set. Then, such an image looks like FIG. 12 (c) to the observer.

Next, FIG. 13 is a case of observing from below (θ = −20 °) with the same arrangement of the screen 13 as in FIG. 12 (a). In this case, the superimposition periods Tc2-1 and Tc2-2 as shown in FIG. 13B are set. The Tc2-1 and Tc2-2 have a longer period than the Tc1-1 and Tc1-2. This is because, as shown in FIG. 13A, when observing from below, the area where the screens 13 appear to overlap becomes large. Then, such an image looks like FIG. 13 (c) to the observer. That is, when it is detected that the observation is performed from below, the first region (superimposed region) is made larger than that when the first region (superimposed region) is observed from the front. Since the first region becomes large, the second region displaying the same partial image also becomes large.

Next, FIG. 14 shows a case where the screen 13 is arranged in the same manner as in FIG. 12 (a) and observed from above (θ = 20 °). In this case, the superimposition periods Tc3-1 and Tc3-2 as shown in FIG. 14B are set. The period of Tc3-1 and Tc3-2 is shorter than that of Tc1-1 and Tc1-2. This is because, as shown in FIG. 14A, when observing from above, the area where the screens 13 appear to overlap becomes smaller. Then, such an image looks like FIG. 14 (c) to the observer. That is, when it is detected that the observation is made from above, the first region (superimposed region) is made smaller than that when the first region (superimposed region) is observed from the front. Since the first region becomes smaller, the second region displaying the same partial image also becomes smaller.

In the case of the configuration of FIG. 11, for example, a reference position corresponding to the front surface is determined in advance, and it is determined based on the detection result of the line-of-sight detector 11 whether the user is observing from below or above the position. , The image control device 6 adjusts the superimposition period according to the detection result (angle).

According to FIGS. 11 to 14, a line-of-sight detector 11 for detecting the line of sight of the observer is further provided, and the image control device 6 covers the range of the first region and the second region based on the detection result of the line-of-sight detector 11. I'm changing. By doing so, it is possible to adjust the range of the first region and the second region according to the position of the observer to display without a break.

The methods of FIGS. 11 to 14 can also be applied to the embodiments described in the first and second embodiments.

FIG. 15 is a head-up display 100B in which the head-up display 100 shown in FIG. 6 is provided with a temperature sensor 12 as well as a display device 1A. The temperature sensor 12 as a temperature detection unit is arranged in the vicinity of the screen 13 and detects the temperature in the vicinity of the screen 13. The temperature sensor 12 may use a well-known sensor element such as a thermistor.

In the configuration of FIG. 15, the switching period of the screen 13 is changed based on the detection result of the temperature sensor 12. The timing chart is shown in FIG. In FIG. 16, the items of each waveform are the same as those in FIG. In the screen 13 shown in FIG. 8, the time for switching between the scattered state and the transmitted state changes depending on the temperature. Therefore, in FIG. 16, when the transient response period (transient period) of the optical characteristics is delayed based on the ambient temperature of the screen 13 detected by the temperature sensor 12, the switching periods fk, gk, and hk are lengthened. Therefore, as shown in the optical characteristics f, g, h, and i in FIG. 16, even if the falling edge becomes gentle due to the influence of temperature, the influence on the image display is reduced by setting the period as the switching period. ..

According to FIGS. 15 and 16, a temperature sensor 12 for detecting the temperature around the screen 13 is further provided, and the image control device 6 covers the range of the first region and the second region based on the detection result of the temperature sensor 12. I'm changing. By doing so, it is possible to cope with the change in the switching period to the scattering state or the like depending on the temperature. Therefore, even if the ambient temperature of the screen 13 changes, it is possible to suppress chipping of the image, leakage of light, and the like.

FIG. 17 is a head-up display 100C in which the head-up display 100 shown in FIG. 6 is provided with a proximity sensor 15 as well as a display device 1A. The proximity sensor 15 may be a well-known sensor that is arranged at the front end or the rear end of a vehicle in which the head-up display 100C is installed, and can detect pedestrians or the like by, for example, ultrasonic waves or infrared rays. Just do it.

In the configuration of FIG. 17, the display of the screen 13 is changed based on the detection result of the proximity sensor 15. The timing chart is shown in FIG. In FIG. 18, the items of each waveform are the same as those in FIG. In FIG. 18, when the proximity sensor 15 detects a pedestrian or the like, the display of the screen 13h is stopped, and a flat image (“pedestrian caution”) having a size including the display area of the screen 13h is displayed on the screen 13i. The screens 13f and 13g display the depth in the same manner as in FIG. 10 and the like. That is, three or more screens (display units) are provided, and the display control device 6 and the screen drive device 8 have screens 13f, 13g (at least two adjacent displays) among the screens 13f, 13g, 13h, 13i (plurality of display units). In the unit), the same partial image is displayed in the first area and the second area, and the same partial image is not displayed in the first area and the second area of the screen 13i (the remaining display area). ing.

According to FIGS. 17 and 18, of the screens 13f, 13g, 13h, and 13i, the same partial image is displayed in the first region of the screen 13f and the second region of the screen 13g, and the screen 13i displays the same partial image. A plane image different from 13 g is displayed. That is, an image based on the partial image displayed in the first region of the screen 13f is displayed in the second region of the screen 13g, and the remaining screen is displayed in the first region of the screen adjacent to the back side. Since the image based on the partial image is not displayed, it is possible to display a mixture of depth display and flat display.

FIG. 19 is an example in which the display device 1A is used as an amusement device. The amusement device 200 includes a display device 1A, a projector 3, a mirror 4, a half mirror 31, and a display 32 in a housing 30. A steering wheel 33 is attached to the housing 30, and it is a drive game for driving a model C of an automobile.

Similar to the other embodiments, the projector 3 emits the image information output from the video control device 6 to the mirror 4 as projected light. The mirror 4 reflects the projected light projected from the projector 3 toward the display device 1.

The half mirror 31 transmits the light from the display 32 and reflects the light from the screen 13 toward the observer. The display 32 is composed of a display device such as a liquid crystal display or an EL display.

The configuration shown in FIG. 11, the configuration shown in FIG. 15, and the configuration shown in FIG. 17 may be combined with each other.

As shown in FIG. 20, in the amusement device 200 having the above-described configuration, the background is displayed on the display 22, and the road portion on which the model C of the automobile travels is displayed with depth by the display device 1.

The shape of the screen is not limited to a rectangle, and may be a free-form shape as shown in FIGS. 21 and 22. The screens 13j, 13k, and 13l shown in FIG. 21 have a shape other than a rectangle as shown in the figure. Then, as shown in FIG. 22, the screen shown in FIG. 21 displays various information such as a meter or the like on the right side and guidance information or a warning on the left side when used for a head-up display of a vehicle or the like. can do.

Further, the present invention is not limited to the above examples. That is, those skilled in the art can carry out various modifications according to conventionally known knowledge within a range that does not deviate from the gist of the present invention. As long as the display device of the present invention is still provided by such a modification, it is, of course, included in the category of the present invention.

1, 1A Display device 6 Video control device (control unit)
8 Screen drive device (control unit)
11 Line-of-sight detector (line-of-sight detector)
12 Temperature sensor (Temperature detection unit)
15 Proximity sensor 13a screen (display)
13b screen (display)
13c screen (display)
13d screen (display)
13e screen (display)
13f screen (display)
13g screen (display)
13h screen (display)
13i screen (display)
13j screen (display)
13k screen (display)
13l screen (display)

Claims (4)

A plurality of display units arranged so that the distances from the observer are different from each other and the display units adjacent to each other when viewed from the observer partially overlap each other when viewed from the observer .
A control unit for displaying an image on each of the plurality of display units is provided.
The control unit is an image displayed in a first area that is a part of at least one of the plurality of display units, and another display arranged on the observer side of the one display unit. Each of the plurality of display units so that the images displayed in the second region, which is a part of the unit and overlaps with the first region when viewed from the observer, overlap with each other when viewed from the observer. A display device characterized by displaying an image on an image. A display device having a plurality of display units arranged so that the distances from the observer are different from each other and the display units adjacent to each other when viewed from the observer partially overlap each other when viewed from the observer . It ’s a display method,
A control step of displaying an image on each of the plurality of display units is included.
In the control step, the image displayed in the first region which is a part of the display unit of at least one of the plurality of display units and the other display arranged on the observer side of the display unit. Each of the plurality of display units so that the images displayed in the second region, which is a part of the unit and overlaps with the first region when viewed from the observer, overlap with each other when viewed from the observer. A display method characterized by displaying an image on the screen. A display device provided with a plurality of display units arranged so that the distances from the observer are different from each other and the display units adjacent to each other when viewed from the observer partially overlap each other when viewed from the observer . On the installed computer,
A control process for displaying an image on each of the plurality of display units is executed.
The control step includes an image displayed in a first region that is a part of at least one of the plurality of display units, and another display arranged on the observer side of the one display unit. Each of the plurality of display units so that the images displayed in the second region, which is a part of the unit and overlaps with the first region when viewed from the observer, overlap with each other when viewed from the observer. A display program characterized by displaying an image on the screen. A display device provided with a plurality of display units arranged so that the distances from the observer are different from each other and the display units adjacent to each other when viewed from the observer partially overlap each other when viewed from the observer . On the installed computer,
A control process for displaying an image on each of the plurality of display units is executed.
The control step includes an image displayed in a first region that is a part of at least one of the plurality of display units, and another display arranged on the observer side of the one display unit. Each of the plurality of display units so that the images displayed in the second region, which is a part of the unit and overlaps with the first region when viewed from the observer, overlap with each other when viewed from the observer. A recording medium characterized by storing a display program for displaying an image in an image.

Images