JP4436403B2 - Pixel shift amount adjusting apparatus and method for display element - Google Patents

Description

  The present invention relates to a projection display device, and more particularly to a pixel shift amount adjustment device and method for a display element of a projection display device in which a plurality of display elements are shifted to obtain a high resolution.

  2. Description of the Related Art Conventionally, when a high resolution is to be obtained in a projection display device, as shown in FIG. 5, light from a lamp 11 is irradiated to two display elements 13 and 14 through a polarization beam splitter 12, and the reflected light is polarized. The beams are overlapped by the beam splitter 12 and projected onto the projection surface 16 through the lens 15 so that the light output positions of the two display elements 13 and 14 are inclined in the oblique direction by a distance that is ½ of the distance between the adjacent pixels in the oblique direction. By shifting the positions, the horizontal and vertical resolutions are doubled.

  At this time, it is necessary to adjust the shift amount of the display elements 13 and 14 to be a half of the distance from the adjacent pixels in the oblique direction, but the two display elements 13 and 14 are separately arranged, Since only the light output is synthesized, it is difficult to adjust the shift amount by looking only at the position of the display element.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a pixel shift amount adjusting device and method for a display element that can easily finely adjust the shift amount of the display element.

The pixel shift amount adjusting apparatus for display elements according to the present invention shifts the light output positions of two display elements in a diagonal direction by a distance that is ½ of the distance between adjacent pixels in the diagonal direction of the pixels of the display elements. doubling the horizontal and vertical resolution of the screen to be displayed on a projection-type display device, the two display horizontal and one first straight line in at least one of the vertical direction in one of the display elements of the device was displayed, and the adjustment signal for inputting the adjustment signal for displaying the two second straight lines sandwiching the first straight line on the projection plane at equal intervals in the other display element to the projection type display device The projection display device is configured such that the distance between the first straight line displayed on the projection plane and each of the two second straight lines is the first and second straight lines. The above-mentioned one at a position that is equidistant throughout It has a configuration provided with a position adjusting mechanism for relatively moving the fine the other display device.

With this configuration, the pixel shift amount adjusting device for the display element of the present invention is such that the distance between the first straight line displayed on the projection plane and the two second straight lines is the first and second straight lines. Since the position adjustment mechanism for relatively moving the one and the other display elements at positions that are equidistant over the whole is provided , fine adjustment of the shift amount of the display elements can be easily performed.

The pixel shift amount adjusting device for a display device of the present invention, the adjustment signal generator may advance the first straight line at least one of the horizontal and vertical directions in one of the display elements of the two display elements An adjustment signal to be displayed on the entire screen of the projection plane is generated at a predetermined interval, and two second straight lines sandwiching each of the first straight lines at equal intervals on the entire screen of the projection plane are It has a configuration for generating an adjustment signal to be displayed on the display element.

  With this configuration, the pixel shift amount adjusting device of the display element of the present invention can adjust the shift amount of the light output position of the two display elements over the entire screen of the projection surface, so that the display is performed over the entire screen of the projection surface. Fine adjustment of the deviation amount of the element can be easily performed.

The pixel shift amount adjusting method of the display element of the present invention shifts the light output position of the two display elements in the oblique direction by a distance that is ½ of the distance between the pixels of the display element and the adjacent pixels in the oblique direction. A method of adjusting a pixel shift amount of a display element in a projection display device that doubles the horizontal and vertical resolutions of a screen displayed on the screen, wherein at least one of the two display elements in the horizontal direction and the vertical direction one the steps that presents a first straight line, and a step to display the second two straight lines sandwiching at regular intervals the first straight line on the projection plane to the other display element, the projection The one and the two at a position where the distance between the first straight line displayed on the surface and each of the two second straight lines is equidistant over the whole of the first and second straight lines. Relative to the other display element And it has a configuration including a position adjustment step of moving.

With this configuration, the pixel shift amount adjusting method of the display element of the present invention is such that the distance between the first straight line displayed on the projection plane and the two second straight lines is the first and second straight lines. Since the position adjustment step of relatively moving the one display element and the other display element at positions that are equidistant over the whole, fine adjustment of the shift amount of the display element can be easily performed.

Further, in the pixel shift amount adjusting method for a display element according to the present invention, the first straight line has a screen on the projection plane at a predetermined interval in at least one of a horizontal direction and a vertical direction in one of the two display elements. it is intended to be displayed in the entire front Stories second straight line has a configuration in which sandwich at regular intervals each of the first straight line in the whole screen of the projection plane.

  With this configuration, the pixel shift amount adjustment method of the display element of the present invention can adjust the shift amount of the light output position of the two display elements over the entire screen of the projection plane, so that display is performed over the entire screen of the projection plane. Fine adjustment of the deviation amount of the element can be easily performed.

  The present invention can provide a pixel shift amount adjusting apparatus and method for a display element, which has an effect that fine adjustment of the shift amount of the display element can be easily performed.

The present invention will be described below with reference to the drawings.
1 to 4 are diagrams showing a pixel shift amount adjusting apparatus and method for a display element according to an embodiment of the present invention.

  In FIG. 1, the pixel shift amount adjustment device for a display element includes a projection display device 10 to be adjusted and an adjustment signal generator 1.

  The projection type display device 10 is the same as the conventional example. The display elements 13 and 14 are reflection type liquid crystal elements. A large number of pixels are arranged in a lattice pattern, and the brightness of the pixels is controlled according to an input signal to display an image. To form. The lamp 11 is a light source, and the polarization beam splitter 12 irradiates the light from the lamp 11 to the display elements 13 and 14 and combines the light reflected from the display elements 13 and 14 and projects the light onto the projection surface 16 through the lens 15. Is. The light output positions of the display elements 13 and 14 can be freely shifted in the horizontal direction and the vertical direction.

  As shown in FIG. 2, the adjustment signal generator 1 has an odd-numbered line (for example, 2 × k + 3th, k is an integer of 0 or more) on the projection plane 16 from the top of the line in the horizontal direction of the pixels. And a signal for displaying even-numbered lines (for example, 2 × kth and 2 × k + 6th) from above the odd-numbered lines and two evenly spaced from the odd-numbered lines. Yes.

When the projection position of the display element 14 is shifted to the lower right direction of the projection position of the display element 13, the pixel is the mth pixel from the left in the horizontal direction of the display element 13 and the nth pixel from the top in the vertical direction if the shift position is accurately aligned (M and n are integers greater than or equal to 0) on the coordinates where the upper left position of the projection surface 16 is the origin (x = 0, y = 0) and the x axis is in the horizontal right direction and the y axis is in the vertical down direction. The position is
x = 2 × m, y = 2 × n
Projected on.

The mth pixel from the left in the horizontal direction of the display element 14 and the nth pixel from the top in the vertical direction are:
x = 2 × m + 1, y = 2 × n + 1
Projected on. This relationship is reversed depending on which direction the display element is shifted obliquely.

  As described above, in FIG. 2, the odd-numbered lines (y = 2 × k + 3) from the top of the horizontal line (straight line) of the pixels are displayed on the projection surface 16 by the display element 14 and are displayed from above the two lines. Even-numbered lines (y = 2 × k and y = 2 × k + 6) are displayed by the display element 13.

  Here, the three lines in FIG. 2 are odd and two even-numbered lines (y = 2 × k and y = 2 × k + 6), respectively, if the amount of shift between the display elements 13 and 14 is appropriate. The interval of the second line (y = 2 × k + 3) is exactly the same, but if the display element 14 is shifted downward, the odd-numbered middle line (by the display element 14) as shown in FIG. (Displayed line) is shifted downward, and when the display element 14 is shifted in the rotation direction, the middle odd-numbered line is shifted as shown in FIG. 3B. Thus, it can be seen that the distance between the lines is not equal and deviates.

  Therefore, the vertical pixel shift amount can be accurately adjusted by adjusting the positional relationship between the display elements 13 and 14 so that the distance between the above three lines becomes equal over the entire line.

  Similarly, the amount of pixel shift in the horizontal direction can be adjusted by displaying three lines in the vertical direction. For example, by displaying a grid pattern as shown in FIG. The amount of pixel shift can be adjusted.

  As described above, the projection type display device displays three straight lines displayed at different intervals according to the amount of deviation of the light output positions of the two display elements, and the amount of deviation is adjusted by this straight line. Therefore, even if the display elements are arranged separately, the shift amount of the light output position can be easily adjusted.

  As described above, the pixel shift amount adjusting apparatus and method for a display element according to the present invention have the effect that fine adjustment of the shift amount of the display element can be easily performed, and a plurality of display elements are shifted. This is useful as a pixel shift amount adjusting device and a method thereof for a display element of a projection type display device which is arranged to obtain a high resolution.

1 is a schematic configuration diagram showing a configuration in an embodiment of a pixel shift amount adjustment device for a display element according to the present invention. The figure which shows the example of a straight line in one Embodiment of the pixel shift amount adjustment apparatus of the display element which concerns on this invention The figure which shows the example of a display of the straight line in one Embodiment of the pixel shift amount adjustment apparatus of the display element which concerns on this invention when two display elements have a position shift. The figure which shows the example of a display of the lattice pattern in one Embodiment of the pixel shift amount adjustment apparatus of the display element which concerns on this invention Schematic configuration diagram showing the configuration of a conventional pixel shift amount adjustment device of a display element

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Signal generator for adjustment 10 Projection type display apparatus 11 Lamp 12 Polarization beam splitter 13, 14 Display element 15 Lens 16 Projection surface

Claims (4)

The horizontal and vertical resolutions of the screens displayed on the projection plane are shifted by shifting the light output positions of the two display elements in an oblique direction by a distance that is ½ of the distance between the pixels of the display elements and the adjacent pixels in the oblique direction. A projection display device that doubles;
Two horizontal and which causes display the one first straight line on at least one of the vertical direction and sandwiched at regular intervals the first straight line on the projection plane at one of the display elements of the two display elements An adjustment signal generator for inputting an adjustment signal for displaying the second straight line on the other display element to the projection display device,
In the projection type display device, the distance between the first straight line displayed on the projection plane and each of the two second straight lines is equal over the entire first and second straight lines. A pixel shift amount adjustment device for a display element, comprising: a position adjustment mechanism for relatively moving the one display element and the other display element to a position corresponding to a distance . The adjustment signal generator may adjust the display in a whole screen of said two one said projection plane in the horizontal direction and a predetermined interval the first straight line in at least one of the vertical direction in the display element of the display device that is intended for generating a signal, and generates an adjustment signal for displaying the second two straight lines sandwiching at regular intervals each of the first straight line to the other display elements in the entire screen of the projection surface The pixel shift amount adjusting device of the display element according to claim 1, The horizontal and vertical resolutions of the screens displayed on the projection plane are shifted by shifting the light output positions of the two display elements in an oblique direction by a distance that is ½ of the distance between the pixels of the display elements and the adjacent pixels in the oblique direction. A method of adjusting a pixel shift amount of a display element in a projection display device that doubles,
And causing display the horizontal direction and one first straight line on at least one of the vertical direction in one of the two display elements, the two sandwiching at regular intervals the first straight line on the projection surface A step of displaying two straight lines on the other display element, and a distance between each of the first straight line and the two second straight lines displayed on the projection plane is the first and second And a position adjusting step of relatively moving the one display element and the other display element at positions that are equidistant over the entire straight line . It said first straight line, the are is in two horizontal directions and predetermined intervals in at least one of the vertical direction in one display element which is displayed on the entire screen of the projection surface, before Symbol second linear 4. The method of adjusting a pixel shift amount of a display element according to claim 3, wherein each of the first straight lines is sandwiched at equal intervals in the entire screen of the projection plane.

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