JP2006171747A - Multi-view display device and suppressing means - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multi-view display device and a suppressing means that can improve display quality and also improve visibility. <P>SOLUTION: The suppressing means 15 of attenuating display light to be projected is formed on an annular wall portion (circumferential member) of a housing 11 and this suppressing means 15 presuppresses undesirable display (display to a wrong direction) due to reflection of display light, projected from an outer circumferential end of a display surface 12a, by the housing 11 etc. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a multi-view display device and a suppression unit that output different images in a plurality of directions from one display unit.

  There has been proposed an image display device that outputs different images in different directions on the same display screen (see, for example, Patent Document 1). When this image display device is mounted on a vehicle, for example, separate images can be output in the driver seat direction and the passenger seat direction, respectively. When the display is viewed from the driver's seat, an image (referred to as a P image) in the direction of the passenger seat from the display is output at an angle that is not originally visible. When the display is viewed from the passenger seat, an image (referred to as a D image) from the display in the direction of the driver's seat is output at an angle that is not originally visible.

JP 2004-206089 A

  In the conventional device, for example, when the display is viewed from the driver's seat, a part of the P image may look undesired. Conversely, when the display is viewed from the passenger seat, part of the D image may appear undesired. As shown in FIG. 11, the direction in which the light emitted from the outer peripheral side end of the display surface is reflected and output to the housing wall surface 1 adjacent to the outer peripheral end is changed, so that it is not originally visible. This is because a part of the image that should not be visible is visible. In spite of having both observers observe different displays, the other display can be seen, and there is a problem that the display quality is deteriorated due to the superimposed display.

  An object of the present invention is to provide a multi-view display device and a suppression unit that can improve display quality and visibility.

The present invention provides a multi-view display device that outputs different images in a plurality of viewing directions from one display means.
A multi-view display device comprising suppression means for suppressing an image to be output in one viewing direction from being reflected by a peripheral member of the display means in another viewing direction.

  In the invention, it is preferable that the suppression unit includes a light attenuating unit that is provided on the peripheral member and attenuates the display light emitted from the display unit.

  In the invention, it is preferable that the suppression unit includes a reflection angle changing unit that is provided in the peripheral member and reflects an image to be output in the one viewing direction in a direction other than the other viewing direction. To do.

  In addition, the present invention is characterized in that the suppression means includes a layer that is provided on the peripheral member and reduces the reflectance of display light.

  In the invention, it is preferable that the suppression unit includes an antireflection film provided on the peripheral member and canceling display light emitted from the display unit by using interference of light.

  In the invention, it is preferable that the suppression unit includes a light source that is provided on the peripheral member and diffuses display light emitted from an outer peripheral end of the display unit.

  Further, in the invention, it is preferable that the suppression unit is a casing including the peripheral member, and the casing is configured to prevent display light output from the display unit from reaching the peripheral member. Features.

Further, the present invention is a deterring means configured to be attachable or detachable to a multi-view display device that outputs different images in a plurality of viewing directions from one display means,
The suppression means has a function of preventing an image to be output in one viewing direction from being reflected in another viewing direction by a peripheral member of the display means.

  According to the present invention, an unwanted display (for example, a display in a direction that should not be displayed originally) that may occur when the display light emitted from the display unit is reflected by the housing or the like by the suppression unit is performed. Therefore, the display quality can be maintained and the visibility can be improved.

  Further, according to the present invention, it is possible to prevent the display light emitted from the display means from being reflected by the surrounding member or the like by the light attenuating means provided on the surrounding member. That is, it is possible to attenuate the light emitted from the outer peripheral end of the display surface and reaching the surrounding members.

  Further, according to the present invention, the visible position and direction of the reflected display light can be expanded without being fixed by reflecting the emitted display light in an arbitrary direction by the reflection angle changing means. . Thus, it is possible to provide freedom in the direction in which the display light is output.

  According to the invention, it is possible to prevent the display light emitted from the display means from being reflected by the peripheral member as much as possible by the layer provided on the peripheral member and reducing the light reflectance. It becomes. It is possible to prevent the direction in which the display light should be output from being changed, and to solve the problem that a part of the image that should not be seen in the originally invisible direction can be seen.

  Further, according to the present invention, it is possible to cancel the light from the emitted display light to the antireflection film by the interference action of light. That is, it is possible to cancel the light emitted from the outer peripheral side end portion of the display surface and reaching the surrounding members.

  Further, according to the present invention, the display light emitted from the outer peripheral side end portion is diffusely reflected by the light source provided on the peripheral member, so that the display light can be prevented from being output in a direction that should not be displayed originally. it can.

  Further, according to the present invention, the display light output from the display means itself is prevented from reaching the peripheral member by the casing including the peripheral member. By configuring the housing in this way, it is possible to suppress display in a direction that should not be displayed originally. Therefore, the structure of the multi-view display device can be simplified.

  Further, according to the present invention, the restraining means for restraining the surrounding member from reflecting in other viewing directions is configured to be attachable to or detachable from the multi-view display device. It becomes possible to have freedom.

Hereinafter, a plurality of embodiments for carrying out the present invention will be described with reference to the drawings. Parts corresponding to the matters described in the preceding forms in each form are denoted by the same reference numerals, and overlapping description may be omitted. When only a part of the configuration is described, the other parts of the configuration are the same as those described in the preceding. In addition to the combination of parts specifically described in each embodiment, the embodiments may be partially combined as long as the combination does not hinder the combination.

  FIG. 1 shows a multi-view display device 10 according to the first embodiment of the present invention. FIG. 1 (a) is a schematic view of the multi-view display device 10, and FIG. FIG. 1C is an enlarged cross-sectional view of a main part of a modified embodiment in which the first embodiment is partially changed. The multi-view display device 10 according to the present embodiment is mounted on a vehicle. However, the multi-view display device 10 is not necessarily limited to vehicles, and can be applied to electronic devices other than vehicles.

  A multi-view display device 10 (referred to as a first display device 10) according to the first embodiment includes a housing 11 and a display main body 12 (sometimes simply referred to as a display 12) supported by the housing 11. Including. The display body 12 that is a display means is realized by, for example, a liquid crystal display panel, a touch panel, a light shielding panel, a backlight, a polarizing plate, and the like. The casing 11 is a substantially rectangular parallelepiped case made of synthetic resin, for example. However, the housing 11 is not necessarily limited to being made of synthetic resin, and may be made of non-metal or metal other than synthetic resin. Moreover, the housing | casing 11 is not necessarily limited to a substantially rectangular parallelepiped shape. The housing 11 is formed with an opening that exposes most of the surface portion 12a (display surface 12a) of the display body 12 to the outside. Here, the longitudinal direction of the housing 11 is defined as the x direction, and the depth direction of the housing 11, that is, the thickness direction of the display main body 12 is defined as the z direction. A direction orthogonal to the x direction and the z direction is defined as a y direction. In FIG. 1, the x, y, and z directions are denoted as x, y, and z, respectively. On one side in the z direction of the first display device 10, an image output from the display 12 can be visually recognized in a state where the driver is seated in one side in the x direction and the occupant is separated from the other in the x direction.

  As shown in FIG. 1A, the housing 11 includes an annular wall portion 13 that forms the opening, and a back wall portion 14 that covers a back surface portion (non-display surface) of the display body 12. 13 and the back wall 14 are integrally formed. In the housing 11, the annular wall 13 (surrounding member) is formed with a plurality of irregularities 15 serving as restraining means. The irregularities 15 may also be referred to as “wrinkles”. The plurality of irregularities 15 are formed opposite to one and the other in the x direction, and are formed opposite to one and the other in the y direction. That is, a plurality of irregularities 15 are formed on the yz plane and the xz plane that face the outer peripheral side end of the display surface 12a and face outward in the annular wall portion 13. Since the plurality of irregularities 15 have the same form in each plane, the irregularities 15 formed on one yz plane in the x direction will be described, and the description of the irregularities 15 formed on the other plane will be omitted.

  In this embodiment, although the several unevenness | corrugation 15 is formed in yz plane and xz plane of the annular wall part 13, it is not necessarily limited to this form. For example, a plurality of irregularities 15 may be formed only on the yz plane of the annular wall portion 13. However, in the case where the support form of the first display device 10 is changed and there are a plurality of viewers on one side and the other side in the y direction of the first display device, a plurality of irregularities 15 may be formed only on the xz plane. is there. As shown in FIG. 1B, the plurality of irregularities 15 are continuously connected in the z direction, and each of the irregularities 15 is formed in a curved shape that is dented in one direction in the x direction, and each convex portion is in the other direction in the x direction. Are formed so as to protrude by a predetermined small distance. In the annular wall portion 13 of the housing 11, an inclined portion 13 a is formed that inclines in one direction in the x direction from the convex portion on the tip end side in the z direction toward one side in the z direction.

The display light emitted in the direction of the driver's seat indicated by the arrow D1 from the outer peripheral end of the display surface 12a is reflected and attenuated in each recess. Although not shown, the display light emitted from the outer peripheral end of the display surface 12a toward the passenger seat indicated by the arrow P1 is reflected and attenuated in each recess in the other yz plane in the x direction. It has become. That is, the plurality of irregularities 15 correspond to the light attenuation means.

  According to the first display device 10 described above, the display light emitted from the outer peripheral side end portion of the display surface 12a is reflected by the casing 11 or the like due to the plurality of projections and depressions 15 and is an undesirable display. (Display in a direction that should not be originally displayed) can be suppressed in advance, and display quality can be maintained and visibility can be improved. Moreover, as shown in FIG.1 (c), you may comprise the member 15A (parts) containing the some unevenness | corrugation 15 among the said annular wall parts 13 so that attachment or detachment to the housing main body 13A is possible. According to this modified form, the assembling work can be facilitated, and the attachment can be given freedom. Further, the mold structure of the housing main body 13A can be simplified as compared with that of the first display device 10 described above, and the manufacturing cost can be further reduced.

  FIG. 2 shows a multi-view display device 10A according to the second embodiment of the present invention, and is a diagram showing reflection angle changing means 16 and the like for changing the reflection angle of display light. In the multi-view display device 10 </ b> A (referred to as the second display device 10 </ b> A) according to the second embodiment, the reflection angle changing means 16 is integrally attached to the annular wall portion 13 of the housing 11. The reflection angle changing means 16 reflects an image to be output in the driver seat direction in a direction other than the passenger seat direction, and reflects an image to be output in the passenger seat direction in a direction other than the driver seat direction. Is. The reflection angle changing means 16 is provided on the yz plane and the xz plane that are close to the outer peripheral side end of the display surface 12a and face outward in the annular wall portion 13. The reflection angle changing means 16 is provided with an inclined surface portion 16a having an inclination angle α so as to incline toward the center side of the display surface 12a from the base end portion in the z direction toward the distal end side in the z direction. By setting the inclination angle α of the inclined surface portion 16a to an appropriate angle (α is, for example, 45 degrees), display light emitted from the outer peripheral side end portion of the display surface 12a is reflected by the housing 11 or the like. This makes it possible to suppress unwanted display (display in a direction that should not be displayed originally). However, the inclination angle α is not limited to 45 degrees.

  According to the second display device 10A described above, the reflection angle changing means 16 forcibly reflects the display light emitted from the outer peripheral end of the display surface 12a in an arbitrary direction, thereby reflecting the display. The visible position and direction of light can be expanded without being fixed. Thus, it is possible to provide freedom in the direction in which the display light is output. In addition, the same effects as the first display device 10 are obtained. The reflection angle changing means 16 may be configured to be attachable to or detachable from the housing body 13A. In this case, the same effect as that of the modified embodiment is obtained.

  FIG. 3 shows a multi-view display device 10B according to the third embodiment of the present invention, and is a diagram showing the deterring means 17 and the like for suppressing reflection in other viewing directions. In the multi-view display device 10B (referred to as the third display device 10B) according to the third embodiment, the suppression means 17 is attached to the annular wall portion 13 of the housing 11 integrally. The suppression means 17 is formed based on the light output direction of the display light emitted from the outer peripheral side end of the display surface 12a. That is, the housing 11 is designed so that the emitted display light does not enter the reflection means 17 and does not reflect.

Specifically, the restraining means 17 is provided with an inclined surface portion 17a having an inclination angle β that is inclined from the base end portion in the z direction toward the distal end side in the z direction and thus outward in the x direction. By setting the inclination angle β of the inclined surface portion 17a to an appropriate angle (β is, for example, 50 degrees or less), display light emitted from the outer peripheral side end portion of the display surface 12a is reflected by the housing 11 or the like. Therefore, it is possible to suppress undesired display (display in a direction that should not be displayed originally) that may occur. However, the inclination angle β is not limited to 50 degrees or less. In the third display device 10B, the display light emitted from the outer peripheral side end of the display surface 12a may be reflected by the suppression means within a range that does not affect the display quality maintenance and the visibility improvement. .

  FIG. 4 shows a multi-view display device 10C according to the fourth embodiment of the present invention, and is a diagram showing the relationship between display means and surrounding members. Even in the multi-view display device 10C (referred to as the fourth display device 10C) according to the fourth embodiment, the display light emitted from the outer peripheral end of the display surface 12a does not enter the suppression means 18 and does not reflect. Thus, the housing 11 is designed. The inhibiting means 18 includes a flat portion 18a and a protruding portion 18b. Of these, the flat portion 18a is formed in the vicinity of the outer peripheral side end portion of the display surface 12a in the annular wall portion 13, and is formed to be substantially flush with the display surface and flat for a predetermined distance. A protrusion 18b is formed continuously at the tip of the flat portion 18a. The protrusion 18b is gradually (gradually) inclined toward the outer side in the x direction from the distal end portion of the flat portion 18a toward the distal end side in the z direction to form a curved convex portion. By such suppression means 18, display light emitted from the outer peripheral side end of the display surface 12 a can be generated by being reflected by the housing 11 or the like (unnecessary display (display in a direction that should not be displayed originally). ) Can be suppressed in advance.

  FIG. 5 shows a multi-view display device 10D according to a fifth embodiment of the present invention. FIG. 5A is a diagram showing a peripheral member 19 and the like configured to be flush with the display surface 12a. FIG. 5B is a diagram illustrating the surrounding member 20 configured to be lower than the display surface 12a. In the fifth embodiment, the restraining means is the casing 11 including the peripheral member 19 (20) of the display main body 12, and the casing outputs an image output from the display main body 12 to the peripheral member 19 (20). ) Is configured to avoid.

  FIG. 6 shows a multi-view display device 10E according to the sixth embodiment of the present invention, and is a diagram showing the suppression means 21 and the like including a layer 21a for reducing the reflectance of light. In the sixth embodiment, it is possible to prevent the display light emitted from the display surface 12a from being reflected by the peripheral member as much as possible by the layer 21a provided on the peripheral member and reducing the light reflectance. It becomes possible. It is possible to prevent the direction in which the display light should be output from being changed, and to solve the problem that a part of the image that should not be seen in the originally invisible direction can be seen. Instead of the layer 21a for reducing the reflectance, an antireflection film is provided on the surrounding member, and the antireflection film cancels display light emitted from the outer peripheral side end of the display surface 12a using light interference. You may comprise so that it may fit. This configuration also has the same effect.

  FIG. 7 shows a multi-view display device 10F according to the seventh embodiment of the present invention, and is a diagram showing a light source 22 and the like that diffusely reflect display light emitted from an outer peripheral end of the display surface 12a. The display light emitted from the outer peripheral side end of the display surface 12a is diffusely reflected by the light source 22 provided in the surrounding member, so that the display light is output in a direction that should not be originally displayed, or the display quality is reduced. Can be deceived within a range that does not affect the maintenance and visibility improvement. Instead of the light source 22, an irregular reflection member (not shown) may be applied. In this case, the structure can be simplified as compared with the structure including the light source 22, and the manufacturing cost can be reduced.

FIG. 8 is a diagram showing accessory parts of a multi-view display device 10G according to the eighth embodiment of the present invention. A multi-view display device 10G (referred to as an eighth display device 10G) according to the eighth embodiment is configured such that an accessory mirror 23 can be attached to or detached from the annular wall portion 13 of the third display device 10B. ing. In a state where the mirror 23 is attached to the annular wall portion 13, the mirror is configured to be angularly displaceable about the y-direction axis. By this mirror 23, an undesired display (display in a direction that should not be displayed originally) that may be caused by the display light emitted from the outer peripheral end of the display surface 12a being reflected by the housing 11 or the like is obviated. In addition to being able to be suppressed, the mirror 23 can be angularly displaced as necessary, and the mirror should be able to visually recognize the direction that should not be displayed. The mirror 23 can be provided only on one side or the other side in the x direction. The mirror 23 may be fixedly provided on the housing 11.

  FIG. 9 is a diagram showing a multi-view display device 10H according to the ninth embodiment of the present invention. In the ninth embodiment, a light-shielding member 25 is provided at the outer peripheral side end of the touch panel 24. According to the present embodiment, the display quality can be maintained and the visibility can be improved only by changing the design of the touch panel 24. Therefore, there is no need to change the mold or the like of the housing 11, and the production cost can be reduced accordingly.

  FIG. 10 is a diagram for explaining the image display method in the multi-view display device according to the tenth embodiment of the present invention. In the multi-view display device (referred to as the tenth display device) according to the tenth embodiment, as shown in FIGS. 10 (a) and 10 (b), the display emitted from the outer peripheral end of the display surface 12a. Displaying images of the driver's seat direction and the passenger's seat direction in the display areas 26 and 27 of the display surface 12a so that display light that is light and can be reflected in the surrounding area is not output in advance, thereby maintaining display quality or It becomes possible to improve visibility.

1 shows a multi-view display device 10 according to a first embodiment of the present invention, FIG. 1A is a schematic view of the multi-view display device 10, and FIG. 1B is an enlarged cross-sectional view of a main part of the multi-view display device 10. FIG. 1 (c) is an enlarged cross-sectional view of the main part of a modified embodiment in which the first embodiment is partially modified. FIG. 10 is a diagram showing a multi-view display device 10A according to a second embodiment of the present invention, and showing reflection angle changing means 16 and the like for changing the reflection angle of display light. It is a figure showing the multi-view display apparatus 10B which concerns on the 3rd Embodiment of this invention, and the suppression means 17 etc. which suppress reflecting in another visual recognition direction. It is a figure showing 10 C of multi-view display apparatuses which concern on the 4th Embodiment of this invention, and showing the relationship between a display means and a surrounding member. FIG. 5A shows a multi-view display device 10D according to a fifth embodiment of the present invention, and FIG. 5A is a diagram showing a peripheral member 19 and the like configured to be flush with the display surface 12a, FIG. These are figures showing the surrounding member 20 grade | etc., Comprised lower than the display surface 12a. It is the figure which shows the multi view display apparatus 10E which concerns on the 6th Embodiment of this invention, and shows the suppression means 21 grade | etc., Which contains the layer 21a which reduces the reflectance of light. It is a figure showing the multiview display device 10F which concerns on the 7th Embodiment of this invention, and the light source 22 etc. which diffusely reflect the display light emitted from the outer peripheral side edge part of the display surface 12a. It is a figure which shows the accessory of the multi view display apparatus 10G which concerns on the 8th Embodiment of this invention. It is a figure which shows the multiview display apparatus 10H which concerns on the 9th Embodiment of this invention. It is a figure explaining the image display method in the multi view display device concerning a 10th embodiment of the present invention. It is the schematic of the conventional image display apparatus.

Explanation of symbols

10 to 10H Multi-view display device 11 Housing 12 Display body 12a Display surface 15 Concavity and convexity 15A Member 16 Reflection angle changing means 17, 18, 21 Suppression means 19, 20 Surrounding member 21a Layer 22 Light source

Claims (8)

In a multi-view display device that outputs different images in a plurality of viewing directions from one display means,
A multi-view display device comprising suppression means for suppressing an image to be output in one viewing direction from being reflected by a peripheral member of the display means in another viewing direction.   The multi-view display device according to claim 1, wherein the suppressing unit includes a light attenuating unit that is provided in the peripheral member and attenuates display light emitted from the display unit.   The said suppression means is provided in the said surrounding member, The reflection angle change means which reflects the image which should be output to the said 1 visual recognition direction in directions other than the said other visual recognition direction is characterized by the above-mentioned. 3. A multi-view display device according to 2.   The multi-view display device according to claim 1, wherein the suppression unit includes a layer that is provided in the peripheral member and reduces a reflectance of display light.   5. The anti-reflection film according to claim 1, wherein the suppression unit includes an antireflection film that is provided on the peripheral member and cancels display light emitted from the display unit by using interference of light. Multi-view display device described in 1.   The multi-view display device according to claim 1, wherein the suppression unit includes a light source that is provided on the peripheral member and diffusely reflects display light emitted from an outer peripheral end portion of the display unit.   The said suppression means is a housing | casing containing the said surrounding member, This housing | casing is comprised so that the display light output from the said display means may avoid reaching the said surrounding member. The multi-view display device according to any one of 1 to 6. A suppression means configured to be attachable or detachable to a multi-view display device that outputs different images in a plurality of viewing directions from one display means,
A suppressor having a function of suppressing an image to be output in one viewing direction from being reflected in another viewing direction by a peripheral member of the display unit.

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