Display device and method for mounting the same

A method for mounting a vehicle-mounted display device having a display section that displays different images intended for a plurality of different viewing ranges on the same screen, and that provides a first viewing range within which one of said different images is viewable and a crosstalk range within which at least two of said different images are simultaneously visible with one overlapping the other, the method comprising:

• mounting said display device forwardly of a position between two seats inside a vehicle in such a manner that said crosstalk range is located between said two seats, and
• providing a display panel in the display device, the display panel having a plurality of pixels and a parallax barrier provided on the display panel and having a plurality of apertures configured to transmit light, wherein:
• the plurality of different viewing ranges are determined by the relationship of the parallax barrier relative to the display panel,
• the viewing range is prescribed by a crosstalk range,
• the plurality of different viewing ranges are set so as to satisfy equations
• θm≦45° (1)
• δd≧65° (2)
• where Om is the angle at which first first-order crosstalk begins to occur, and δd is the angle at which first second-order crosstalk begins to occur,
• the parallax barrier includes light-blocking bands and light-transmitting bands in alternating fashion,
• the first-order crosstalk is crosstalk in which a first display image and a second display image directly overlap each other in an area centered about the angle of viewing of 90° and
• the second-order crosstalk is crosstalk in which the pixel beyond the desired pixel becomes visible through another light-transmitting band of the parallax barrier, wherein
• θm is calculated as follows:
• θm=arctan(H/(w+2a+b−d)) (13)
• δd is calculated as follows:
• δd=π-arctan(H/(b−d)) (14)
• where:
• a represents a first displacement distance by which a center of a light-transmitting band of the parallax barrier is displaced relative to an edge of a pixel for a driver's seat side,
• b represents a second displacement distance by which the center of the light-transmitting band of the parallax barrier is displaced relative to an edge of a pixel for a passenger's seat side,
• d represents an aperture width of the light-transmitting band of the parallax barrier,
• H represents another distance between the parallax barrier and a liquid crystal layer of the display panel, and
• w represents a width of each pixel of the plurality of pixels.

A method for mounting a vehicle-mounted display device having a display section that displays different images intended for a plurality of different viewing ranges on the same screen, the method comprising:

• mounting the display device forwardly of a position between two seats inside a vehicle in such a manner that one of the plurality of different viewing ranges covers at least a range not smaller than 45° but not larger than 65° in terms of an angle relative to a reference plane defined at one longitudinal end of said display section and that another one of said plurality of different viewing ranges covers at least a range not smaller than 115° but not larger than 135° in terms of an angle relative to said reference plane, and
• providing a display panel in the display device, the display panel having a plurality of pixels and a parallax barrier provided on the display panel and having a plurality of apertures configured to transmit light, wherein:
• the plurality of different viewing ranges are determined by the relationship of the parallax barrier relative to the display panel,
• the viewing range is a range which can be observed from a driver's seat or a passenger's seat,
• the viewing range is prescribed by a crosstalk range,
• said plurality of different viewing ranges are set so as to satisfy equations
• θm≦45° (1)
• δd≧65° (2)
• and another plurality of different viewing ranges are set so as to satisfy equations
• θd≦115 ° (5)
• δm≧135° (6)
• where θm is the angle at which first first-order crosstalk begins to occur, δd is the angle at which first second-order crosstalk begins to occur, θd is the angle at which second second-order crosstalk begins to occur, and δm is the angle at which second first-order crosstalk begins to occur, and
• the parallax barrier includes light-blocking bands and light-transmitting bands in alternating fashion,
• the first-order crosstalk is crosstalk in which a first display image and a second display image directly overlap each other in an area centered about the angle of viewing of 90°, and
• the second-order crosstalk is crosstalk in which the pixel beyond the desired pixel becomes visible through another light-transmitting band of the parallax barrier, wherein
• θm is calculated as follows:
• θm=arctan(H/(w+2a+b−d)) (13)
• δd is calculated as follows:
• δd=π-arctan(H/(b−d)) (14)
• where:
• a represents a first displacement distance by which a center of a light-transmitting band of the parallax barrier is displaced relative to an edge of a pixel for a driver's seat side,
• b represents a second displacement distance by which the center of the light-transmitting band of the parallax barrier is displaced relative to an edge of a pixel for a passenger's seat side,
• d represents an aperture width of the light-transmitting band of the parallax barrier,
• H represents another distance between the parallax barrier and a liquid crystal layer of the display panel, and
• w represents a width of each pixel of the plurality of pixels.