JP2009300816A - Method and device for manufacturing display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accurately align a display panel of a display device for providing different images for a plurality of observation areas, and a light advance control part. <P>SOLUTION: The method for manufacturing a display device includes the display panel 10 in which a plurality of element groups each of which includes a plurality of electro-optical elements (e) are arranged, and the light advance control part which controls display light emitted from each of the plurality of element groups of the display panel 10 so as to advance to the observation areas different from each other. The method for manufacturing a display device includes: a photographing step of taking an image expressed by the display light advancing through the light advance control part from the element group by a camera 40 arranged in the predetermined observation area Ob; an adjusting step of adjusting the light advance control part relative to the display panel 10 so that a difference between an image actually taken by the camera 40 in the photographing step and an image to be taken by the camera 40 may be minimum; and a fixing step of fixing the light advance control part to the display panel 10 after the adjusting step. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method and apparatus for manufacturing a display device that provides different images to a plurality of observation areas.

  Conventionally, a display device that displays a plurality of images on one screen and distributes these different images to a plurality of observation regions is known. In such a display device, in order to optimize an image visually recognized by an observer in each observation region, in the manufacturing stage, a display panel in which a plurality of pixel groups are arranged, and each of the plurality of pixel groups It is necessary to accurately perform alignment with a light progression control unit (for example, a lenticular lens) that controls the display light emitted from the display to advance to different observation regions.

  For example, in Patent Document 1 and Patent Document 2, an alignment mark provided outside the display area of the display panel and a plurality of semi-cylindrical lenses (cylindrical lenses) constituting a lenticular lens on the lens plate are formed. A technique is disclosed in which alignment is performed by matching an alignment mark provided outside the region.

  For example, Patent Document 3 and Patent Document 4 disclose a technique for aligning the display panel and the lenticular lens so that the image of the alignment mark formed outside the display area is in a predetermined state. ing.

Further, for example, in Patent Document 5, a linear image represented by display light traveling through a lenticular lens from a pixel column parallel to the longitudinal direction of a semi-cylindrical lens (cylindrical lens) constituting the lenticular lens is disclosed. A technique is disclosed in which a display panel and a lenticular lens are aligned so that an alignment image is formed and a linear image is formed at a predetermined position on an observation surface.
JP-A-6-324317 Japanese Patent Laid-Open No. 10-123633 JP-A-10-239633 JP-A-11-15086 JP 2004-280087 A

However, as in Patent Documents 1 to 4, even if alignment is performed using alignment marks provided outside the display area, it is actually visually recognized by an observer due to manufacturing errors of the display panel and lenticular lens. There are cases where an image is not optimal (for example, an image that should not be visually recognized by an observer is viewed).
In Patent Document 5, for example, the longitudinal direction of a semi-cylindrical lens (cylindrical lens) constituting a lenticular lens is arranged in a state where it is inclined with respect to the pixel column of the display panel. Even when the linear image is formed in an inclined state, if the linear image is formed at a predetermined position on the observation surface, alignment is performed there. For this reason, an image that is actually visually recognized by an observer may not be optimal.
In view of the above circumstances, the present invention has a problem of accurately performing alignment between the display panel and the light progression control unit in order to optimize an image actually viewed by the observer in each observation region. It aims to solve the problem.

  In order to solve the above problems, a method for manufacturing a display device according to the present invention includes a display panel in which a plurality of element groups each including a plurality of electro-optical elements are arranged, and a plurality of element groups of the display panel. A method of manufacturing a display device comprising: a light progress control unit that controls display light traveling from each to a different observation region and controlling so that a different image is visually recognized in each observation region. A photographing step of photographing an image represented by display light traveling through a progress control unit (for example, the lenticular lens 20 shown in FIG. 1) with a camera arranged in a predetermined observation region, and a real photographing by the camera in the photographing step An adjustment process for adjusting the light progress control unit with respect to the display panel so that a difference between the captured image and an image to be photographed by the camera is reduced, and after the adjustment process, the light progress control unit is displayed on the display panel. Characterized in that it comprises a fixing step of fixing Le.

  In this mode, the difference between the image actually captured by the camera disposed in the predetermined observation area and the image to be captured by the camera is reduced, that is, the image is disposed in the predetermined observation area. Since the display panel and the light progression control unit are aligned so that the image actually captured by the camera approaches the image to be captured by the camera, the image actually viewed by the observer is optimal. There is an advantage that it can be close to anything.

  The “electro-optical element” is an element whose optical characteristics such as light emission characteristics and light transmission characteristics change in accordance with applied electric energy. As an element whose light emission characteristics change according to applied electric energy, for example, there is an organic light emitting diode (hereinafter referred to as “OLED”) element called an organic EL (Electroluminescent) element or a light emitting polymer element. An example of an element whose light transmission characteristics change according to applied electric energy is a liquid crystal.

  As an aspect of the manufacturing method of the display device according to the present invention, in the photographing process, a camera (for example, the cameras 40a and 40b shown in FIG. 3) disposed in each of at least two observation regions of the plurality of observation regions The image represented by the display light traveling in the observation area where the is placed is photographed, and in the adjustment process, the difference between the image actually photographed by each camera in the photographing process and the image to be photographed by the camera It is preferable to adjust the light progress control unit with respect to the display panel so as to reduce.

  According to this aspect, an actual image is captured using two or more cameras, and the difference between the image actually captured by each camera and the image to be captured by the camera is reduced. Since the progress control unit is adjusted with respect to the display panel, alignment between the display panel and the light progress control unit can be performed with higher accuracy.

  As an aspect of the method for manufacturing a display device according to the present invention, in the photographing process, a first image (for example, a plurality of images represented by display light traveling from each of the plurality of element groups through the light progression control unit) The third image in this specification) and the second image (for example, the sixth image in this specification) are displayed in different colors, and at least one of the first image and the second image is reflected. By doing so, the first image and the second image are taken with one camera, and in the adjusting step, the difference between the image actually taken by the camera in the taking step and the image to be taken by the camera is reduced. Thus, it is preferable to adjust the light progress control unit with respect to the display panel.

  According to this aspect, since the first image and the second image are captured by one camera, it is not necessary to provide a plurality of cameras for capturing the first image and the second image. Therefore, there is an advantage that the configuration is simplified. In addition, the first image and the second image captured by one camera overlap each other, but the first image and the second image are displayed in different colors and are captured by one camera. The first image and the second image can be easily distinguished.

  As an aspect of the method for manufacturing a display device according to the present invention, each of a plurality of images represented by display light traveling from each of a plurality of element groups to each observation region through a light progression control unit has a different number. It is preferable to control the display panel. According to this aspect, each of the plurality of images displayed in each observation area is indicated by a different number so that an image actually captured by the camera arranged in the predetermined observation area is captured by the camera. Since it is possible to accurately determine how the image is to be deviated from the image to be performed, there is an advantage that adjustment in the adjustment process becomes easy.

  As an aspect of the manufacturing method of the display device according to the present invention, in the photographing process and the adjusting process, a polarizing plate (for example, the alignment polarizing plate 18 ′ shown in FIG. 9) is disposed between the camera and the light progress control unit. You can also. In this aspect, the set distance between the display group of the display panel and the light progression control unit is small, and the display panel and the light progression control unit in the display device in which no polarizing plate is disposed between the element group and the light progression control unit, It is effective for alignment of

  Furthermore, it can also be set as the aspect provided with the process of moving a polarizing plate from the space between a camera and a light progress control part after an adjustment process and before a fixing process. For example, when an ultraviolet curable adhesive is used as a fixing means between the display panel and the light progress control unit, when the ultraviolet ray for curing the adhesive is irradiated to the polarizing plate, the ultraviolet ray is absorbed by the polarizing plate, The time until the adhesive is cured is prolonged. Therefore, it leads to delay of a process. In the above aspect, since the step of moving the polarizing plate from the space between the camera and the light progress control unit is provided after the adjusting step and before the fixing step, the ultraviolet rays applied to the adhesive are absorbed by the polarizing plate. Can be prevented. Therefore, there is an advantage that the delay of the process can be prevented.

  The display device manufacturing apparatus according to the present invention includes a display panel in which a plurality of element groups each including a plurality of electro-optical elements are arranged, and display light emitted from each of the plurality of element groups of the display panel. And a light progress control unit that controls the light so as to travel to different observation areas, and captures an image represented by display light traveling from the element group through the light progress control unit In order to reduce the difference between a camera arranged in a predetermined observation area, an image actually captured by the camera, and an image to be captured by the camera, the light progression control unit is connected to the display panel. An adjusting mechanism for adjusting and a fixing means (for example, the adhesive layer 22 and the ultraviolet irradiation unit 70 shown in FIG. 3) for fixing the light progress control unit adjusted by the adjusting mechanism to the display panel are provided. As an aspect of the display device manufacturing apparatus according to the present invention, an aspect including a polarizing plate disposed between the camera and the light progress control unit may be employed.

<A: First Embodiment>
FIG. 1 is a perspective view showing a display device 100 according to the first embodiment of the present invention. As shown in FIG. 1, in the display device 100, a display panel 10 and a plurality of cylindrical lenses (semi-columnar lenses) 21 whose longitudinal direction extends in the Y direction are arranged in parallel along the X direction. A lenticular lens 20 and a backlight 30 are provided.

  FIG. 2 is a cross-sectional view of the display device 100 according to the present embodiment. The lenticular lens 20 is disposed on the viewer side when viewed from the display panel 10, and the backlight 30 is disposed on the back side of the display panel 10. As shown in FIG. 2, the display panel 10 includes a first substrate 12, a second substrate 14, and a plurality of electro-optical elements e (e <b> 1 to e <b> 8) sandwiched between the first substrate 12 and the second substrate 14. ), A first polarizing plate 16 attached to the surface of the first substrate 12 on the backlight 30 side, and a second polarizing plate 18 attached to the surface of the second substrate 14 on the observation side. In the present embodiment, each of the plurality of electro-optical elements e is a liquid crystal element in which a liquid crystal is interposed between electrodes facing each other (pixel electrode and counter electrode), and the transmittance (backlight) of each liquid crystal element. The ratio of the amount of light that is transmitted from 30 to the observation side among the light irradiated to the liquid crystal element changes in accordance with the voltage applied to the liquid crystal element.

  In the present embodiment, the plurality of electro-optical elements e include a first image display element e1, a second image display element e2, a third image display element e3, a fourth image display element e4, It is divided into a fifth image display element e5, a sixth image display element e6, a seventh image display element e7, and an eighth image display element e8. The plurality of first image display elements e1 cooperate to display a first image, and the plurality of second image display elements e2 cooperate to display a second image. Similarly, the third image display element e3 to the eighth image display element e8 display the third to eighth images. That is, the display panel 10 according to the present embodiment displays 8 images corresponding to 8 viewpoints.

  The lenticular lens 20 shown in FIG. 2 is means for controlling the display light traveling from each image display element e of the display panel 10 to travel to different observation areas Ob. As shown in FIG. 2, the lenticular lens 20 is attached on the second polarizing plate 18 of the display panel 10 via an adhesive layer 22.

  The light traveling from each first image display element e1 reaches the first observation region Ob1 through the lenticular lens 20 on the plane 300 that is separated from the lenticular lens 20 by an appropriate distance A. The appropriate distance A is a distance necessary for light from a plurality of elements e constituting one image corresponding to one viewpoint to gather through the lenticular lens 20. Light traveling from each second image display element e2 reaches the second observation region Ob2 in the plane 300 through the lenticular lens 20, and each third image is input to the third observation region Ob3 in the plane 300. Light traveling from the display element e3 reaches through the lenticular lens 20, and light traveling from each fourth image display element e4 reaches the fourth observation region Ob4 on the plane 300 through the lenticular lens 20. To do. Similarly, the fifth image display elements e5 to the eighth image display elements e8 correspond to the fifth observation area Ob5 to the eighth observation area Ob8.

  In the present embodiment, the interval between the observation regions Ob is set to be the distance between the eyes of the observer. FIG. 2 illustrates an aspect in which the left eye of the observer is located in the fourth observation region Ob4 and the right eye of the observer is located in the fifth observation region Ob5. In the embodiment shown in FIG. 2, a fourth image represented by display light traveling through the lenticular lens 20 from each fourth image display element e4 is incident on the left eye of the observer, and each fifth image display element A fifth image represented by display light traveling from e5 through the lenticular lens 20 is incident on the right eye of the observer, and the observer recognizes a stereoscopic image by the parallax between the fourth image and the fifth image. Although detailed explanation is omitted, when the observer's viewpoint moves along the X direction shown in FIG. 2, the image incident on both eyes of the observer also changes, so that the stereoscopic image recognized by the observer is at the viewpoint position. Will change accordingly.

  FIG. 3 is a diagram schematically illustrating the manufacturing apparatus 200 of the display device 100 according to the present embodiment. As shown in FIG. 3, the manufacturing apparatus 200 includes a camera 40 (40a, 40b), a control signal calculation circuit 50, an adjustment mechanism 60, and an ultraviolet irradiation unit 70.

  As shown in FIG. 3, in the present embodiment, one camera 40 is disposed in each of the third observation region Ob3 and the sixth observation region Ob6. Each camera 40 may be arranged at a predetermined distance away from the negative side in the Z direction when viewed from the plane 300 shown in FIG. Data of images taken by each camera 40 is output to the control signal calculation circuit 50.

  The control signal calculation circuit 50 shown in FIG. 3 is a control signal for controlling the adjustment mechanism 60 so that the difference between the image actually captured by each camera 40 and the image to be captured by each camera 40 is reduced. Is calculated according to the program, and the calculated control signal is output to the adjusting mechanism 60. The control signal according to the present embodiment is such that there is no difference between an image actually captured by each camera 40 and an image to be captured by each camera 40 (that is, an image actually captured by each camera 40). And a signal for controlling the adjusting mechanism 60 so that the amount of deviation from the image to be photographed by each camera 40 becomes zero.

  The adjustment mechanism 60 is means for adjusting the position of the lenticular lens 20 relative to the display panel 10 in accordance with the control signal output from the control signal calculation circuit 50.

  Specifically, the adjustment mechanism 60 includes an actuator that can move the lenticular lens 20 in the X direction and a rotation mechanism that can rotate the lenticular lens 20 with respect to the display panel 10.

  The ultraviolet irradiation unit 70 is means for fixing the lenticular lens 20 to the display panel 10 by irradiating the adhesive layer 22 made of an ultraviolet curable adhesive with ultraviolet rays.

  Next, a method for aligning the lenticular lens 20 and the display panel 10 performed by the manufacturing apparatus 200 according to the present embodiment will be described with reference to FIG.

<Photographing process>
First, in the photographing process, an image represented by display light traveling through the lenticular lens 20 from the element group of the display panel 10 is photographed by the camera 40 arranged in the predetermined observation region Ob. In the present embodiment, a third image represented by display light traveling through the lenticular lens 20 from each third image display element e3 is photographed by the camera 40a disposed in the third observation region Ob3, and each third image display element e3 is photographed. A sixth image represented by display light traveling from the six-image display element e3 through the lenticular lens 20 is photographed by the camera 40b disposed in the sixth observation region Ob6. Data of images taken by each camera 40 is output to the control signal calculation circuit 50.

  Here, in this embodiment, in the alignment between the lenticular lens 20 and the display panel 10, the i-th image visually recognized in the i-th observation region Obi (i = 1 to 8) indicates the number “i”. In this manner, each image display element e of the display panel 10 is controlled. For example, the third image viewed in the third observation region Ob3 shows the number “3”, and the sixth image viewed in the sixth observation region Ob6 shows the number “6”. Ten image display elements e are controlled. When the alignment between the lenticular lens 20 and the display panel 10 is accurately performed, an image photographed by the camera 40a arranged in the third observation region Ob3 is as shown in FIG. An image taken by the camera 40b arranged in the observation area Ob6 is as shown in FIG.

<Adjustment process>
In the adjustment process after the photographing process, the lenticular lens 20 is placed on the display panel 10 so that the difference between the image actually photographed by each camera 40 in the photographing process and the image to be photographed by each camera 40 is reduced. Adjust for this. In the present embodiment, when the control signal output from the control signal calculation circuit 50 is input to the adjustment mechanism 60, the adjustment mechanism 60 determines the position of the lenticular lens 20 with respect to the display panel 10 in accordance with the input control signal. Adjust.

  For example, when the lenticular lens 20 is shifted to the negative side in the X direction with respect to the display panel 10, an image photographed by the camera 40a disposed in the third observation region Ob3 is shown in FIG. At the same time, an image taken by the camera 40b arranged in the sixth observation region Ob6 may be in the form shown in FIG. In this case, the adjustment mechanism 60 detects only the numeral “3” in the camera 40a arranged in the third observation area Ob3, and only the numeral “6” in the camera 40b arranged in the sixth observation area Ob6. Is aligned by moving the lenticular lens 20 in the X direction.

  For example, as shown in FIG. 6, the longitudinal direction of the cylindrical lens 21 constituting the lenticular lens 20 is inclined with respect to the Y direction shown in FIG. 6, so that the camera arranged in the third observation region Ob3. When the image photographed by the camera 40a is in the form shown in FIG. 7A, and the image photographed by the camera 40b arranged in the sixth observation region Ob6 is in the form shown in FIG. 7B. There is. Also in this case, the adjusting mechanism 60 detects only the numeral “3” in the camera 40a arranged in the third observation area Ob3, and also detects the numeral “6” in the camera 40b arranged in the sixth observation area Ob6. Alignment is performed by rotating the lenticular lens 20 relative to the display panel 10 so that only the lens is detected.

  In the present embodiment, before the photographing process, an ultraviolet curable adhesive (corresponding to the adhesive layer 22) is applied to the surface of the lenticular lens 20 facing the second polarizing plate 18, and the second polarizing plate 18 is coated. It is in contact. Since the adhesive is not cured until the adhesive is irradiated with ultraviolet rays in the fixing step described later, the lenticular lens 20 can move with respect to the display panel 10 until that time.

<Fixing process>
When the adjustment operation by the adjustment mechanism 60 is completed, ultraviolet rays are irradiated from the ultraviolet irradiation unit 70 to the adhesive layer 22 interposed between the lenticular lens 20 and the second polarizing plate 18. As a result, the adhesive layer 22 is cured and the lenticular lens 20 is fixed to the display panel 10.

  As described above, in the present embodiment, the difference between the image actually captured by the camera 40 arranged in the predetermined observation area Ob and the image to be captured by the camera 40 is reduced. Since the display panel 10 and the lenticular lens 20 are aligned, there is an advantage that an image actually viewed by the observer can be brought close to an optimum one.

<B: Second Embodiment>
FIG. 8 is a cross-sectional view of a display device 100 according to the second embodiment of the present invention. In the present embodiment, the second polarizing plate 18 is arranged on the viewer side as viewed from the lenticular lens 20 without arranging the second polarizing plate 18 between the lenticular lens 20 and each image display element e. This differs from the configuration of the first embodiment described above. According to the present embodiment, the distance between each image display element e of the display panel 10 and the lenticular lens 20 can be set to a smaller value than the display device 100 according to the first embodiment.

  As shown in FIG. 8, the second polarizing plate 18 is affixed on a transparent support substrate 13 disposed on the viewer side when viewed from the lenticular lens 20. Further, the lenticular lens 20 is attached on the second substrate 14 through the adhesive layer 22. Other configurations are the same as those of the first embodiment described above, and thus the description of the overlapping portions is omitted.

  FIG. 9 is a diagram illustrating a schematic configuration of the manufacturing apparatus 200 according to the present embodiment. In the present embodiment, in the alignment between the lenticular lens 20 and the display panel 10, the alignment is performed by using the same type of alignment polarizing plate 18 ′ as the second polarizing plate 18 without using the second polarizing plate 18. Do. As shown in FIG. 9, the alignment polarizing plate 18 ′ attached on the transparent alignment support substrate 13 ′ is positioned on the observer side of the lenticular lens 20 by the alignment polarizing plate holding mechanism 17. Can be held. In the present embodiment, the alignment polarizing plate holding mechanism 17 is an actuator, and the alignment polarizing plate holding mechanism 17 can move the alignment polarizing plate 18 ′ in the X direction shown in FIG. . Hereinafter, a method for aligning the lenticular lens 20 and the display panel 10 performed by the manufacturing apparatus 200 according to the present embodiment will be described.

<Photographing process>
In the photographing process, in order to enable the camera 40 arranged in each observation region Ob to detect an image represented by the display light that should proceed to the observation region Ob, the alignment polarizing plate 18 ′ The alignment polarizing plate holding mechanism 17 holds the lenticular lens 20 so as to be positioned on the viewer side. In the imaging process according to the present embodiment, as in the first embodiment described above, the third image represented by the display light traveling from each third image display element e3 through the lenticular lens 20 is displayed in the third observation region. A camera 40b disposed in the sixth observation region Ob6 is captured by the camera 40a disposed in Ob3, and a sixth image represented by display light traveling from each sixth image display element e3 through the lenticular lens 20 is displayed. Shoot with.

<Adjustment process>
Also in the adjustment step after the photographing step, the alignment polarizing plate 18 ′ is held by the alignment polarizing plate holding mechanism 17. Then, the lenticular lens 20 is adjusted with respect to the display panel 10 in the same manner as in the first embodiment.

<Polarizing plate moving process>
After the adjustment step and before the fixing step, the alignment polarizing plate holding mechanism 17 moves the alignment polarizing plate 18 ′ to the negative side in the X direction shown in FIG. The alignment polarizing plate 18 ′ is moved from the space in between. In the present embodiment, the mode in which the alignment polarizing plate holding mechanism 17 is configured by an actuator is illustrated. However, the present invention is not limited to this. For example, the alignment polarizing plate holding mechanism 17 is not configured by an actuator. Further, after the adjusting step and before the fixing step, the human may remove the alignment polarizing plate 18 ′ from the alignment polarizing plate holding mechanism 17.

<Fixing process>
In the fixing process, with the alignment polarizing plate 18 ′ moved from the space between the camera 40 and the lenticular lens 20, the adhesive layer 22 interposed between the lenticular lens 20 and the second substrate 14 is Ultraviolet rays are irradiated from the ultraviolet irradiation unit 70. As a result, the adhesive layer 22 is cured and the lenticular lens 20 is fixed to the display panel 10.

  In the present embodiment, since the alignment polarizing plate 18 ′ is moved from the space between the camera 40 and the lenticular lens 20 after the adjustment step and before the fixing step, the ultraviolet irradiation unit 70 is provided in the fixing step. The ultraviolet ray irradiated from the position does not irradiate the alignment polarizing plate 18 ′. Therefore, according to the present embodiment, it is prevented that the time until the ultraviolet curable adhesive is cured by the ultraviolet rays irradiated from the ultraviolet irradiation unit 70 being absorbed by the alignment polarizing plate 18 ′ is prevented. it can. This can prevent the process from being delayed.

  In the present embodiment, an embodiment in which alignment is performed using the alignment polarizing plate 18 ′ is illustrated. However, the embodiment is not limited thereto, and an embodiment in which alignment is performed using the second polarizing plate 18 is used. You can also.

<C: Third Embodiment>
FIG. 10 is a diagram showing a schematic configuration of a manufacturing apparatus 200 according to the third embodiment of the present invention. As shown in FIG. 10, the manufacturing apparatus 200 according to the present embodiment includes the third image mirror 80, the sixth image mirror 82, and the cross half mirror 84. And different. In addition, in this embodiment, the aspect which arrange | positions the 2nd polarizing plate 18 between the lenticular lens 20 and each image display element e like the above-mentioned 1st Embodiment is illustrated, However, For example, the second polarizing plate 18 may be arranged on the viewer side as viewed from the lenticular lens 20 as in the second embodiment.

  The third image mirror 80 shown in FIG. 10 is a means for reflecting the display light traveling through the lenticular lens 20 from each third image display element e3 and guiding it to the cross half mirror 84. Further, the sixth image mirror 82 shown in FIG. 10 is means for reflecting the display light traveling through the lenticular lens 20 from each sixth image display element e6 and guiding it to the cross half mirror 84. Further, the cross half mirror 84 shown in FIG. 10 superimposes the display light reflected by the third image mirror 80 and the display light reflected by the sixth image mirror 82 to one camera 40. It is a means for guiding.

  In this embodiment, the aspect provided with the mirror 80 for the 3rd image, the mirror 82 for the 6th image, and the cross half mirror 84 is illustrated, but it is not restricted to this, for example, as shown in FIG. The sixth image mirror 82 and the half mirror 86 are provided without the third image mirror 80 and the cross half mirror 84, and the display light emitted from each of the sixth image display elements e6 is supplied to the sixth image mirror 82. In addition, the third image and the sixth image may be taken by the single camera 40a arranged in the third observation region Ob3, guided to the third observation region Ob3 via the half mirror 86. In short, any mode in which at least one of the third image and the sixth image is reflected to capture the third image and the sixth image with one camera 40 arranged in the predetermined observation area Ob. Good.

  However, as shown in FIG. 10, in the present embodiment, the third image mirror 80 and the sixth image mirror 82 are arranged so as to be symmetrical with respect to the cross half mirror 84. The optical path until the display light emitted from the image display element e3 reaches the camera 40 can be made equal to the optical path until the display light emitted from each sixth image display element e6 reaches the camera 40. . Thereby, since the focus of the lens of the camera 40 can be simultaneously adjusted to both images (third image and sixth image) to be photographed, the third image mirror 80 and the cross half mirror 84 are not provided. In addition, there is an advantage that blurring can be prevented as compared with the aspect including the sixth image mirror 82 and the half mirror 86.

  Hereinafter, a method for aligning the lenticular lens 20 and the display panel 10 performed by the manufacturing apparatus 200 according to the present embodiment will be described.

<Photographing process>
In the photographing process, a third image represented by display light traveling from each third image display element e3 through the lenticular lens 20 and a display traveling from each sixth image display element e6 through the lenticular lens 20 are displayed. The sixth image represented by light is displayed in different colors, and the third image and the sixth image are captured by one camera 40.

  In the present embodiment, since the third image and the sixth image are photographed by one camera 40, it is necessary to provide a plurality of cameras 40 for photographing the third image and the sixth image as in the above-described embodiments. There is no. Therefore, the configuration is simplified.

  In the present embodiment, the display light reflected by the third image mirror 80 and the display light reflected by the sixth image mirror 82 are overlapped by the cross-half mirror 84 to form one camera. Therefore, the third image and the sixth image captured by the one camera 40 are overlapped with each other as shown in FIG. In the present embodiment, the third image and the sixth image captured by one camera 40 are controlled by controlling each image display element e so that the third image and the sixth image are displayed in different colors. And can be easily distinguished.

<Adjustment process>
In the adjustment step, the lenticular lens 20 is placed on the display panel 10 so that the difference between the image actually taken by the one camera 40 in the photographing step and the image to be taken by the one camera 40 is reduced. Adjust. The adjustment method is the same as in the above-described embodiments.

<Fixing process>
After the adjustment step, the same fixing step as that in the above embodiments is performed.

<D: Modification>
The present invention is not limited to the above-described embodiments, and for example, the following modifications are possible. Also, two or more of the modifications shown below can be combined.

(1) Modification 1
FIG. 13 is a view showing a modification of the manufacturing apparatus 200 according to the second embodiment described above. The mode shown in FIG. 13 is different from the configuration of the second embodiment described above in that the second polarizing plate 18 is disposed in each of the third observation region Ob3 and the sixth observation region Ob6. As shown in FIG. 13, the second polarizing plate 18 disposed in the third observation region Ob3 is disposed on the front side of the lens of the camera 40a (the lenticular lens 20 side) and disposed in the sixth observation region Ob6. The second polarizing plate 18 is disposed on the front side (lenticular lens 20 side) of the lens of the camera 40b.

  In the embodiment shown in FIG. 13, since the second polarizing plate 18 is disposed in the predetermined observation region Ob, the second polarizing plate 18 is not irradiated with the ultraviolet rays irradiated from the ultraviolet irradiation unit 70 in the fixing step. . Therefore, according to the aspect shown in FIG. 13, unlike the second embodiment described above, the step of moving the polarizing plate from the space between the camera 40 and the lenticular lens 20 after the adjustment step and before the fixing step. Since it becomes unnecessary, there is an advantage that the process can be simplified.

  Note that FIG. 13 illustrates a mode in which the second polarizing plate 18 is disposed in the predetermined observation region Ob. However, the present invention is not limited to this. For example, as shown in FIG. The second polarizing plate 18 may be arranged on the 20 side and on the observation region Ob side when viewed from the ultraviolet irradiation unit 70. In short, if the second polarizing plate 18 is arranged on the observation region Ob side when viewed from the ultraviolet irradiation unit 70, the second polarizing plate 18 is not irradiated with ultraviolet rays from the ultraviolet irradiation unit 70, so the second embodiment described above. Unlike the form, the step of moving the polarizing plate from the space between the camera 40 and the lenticular lens 20 after the adjusting step and before the fixing step is not necessary.

(2) Modification 2
In each of the above-described embodiments, the aspect in which the camera 40 is disposed in each of the third observation region Ob3 and the sixth observation region Ob6 is illustrated, but the observation region Ob in which the camera 40 is disposed is arbitrary. For example, the camera 40 can be arranged in each of the fourth observation region Ob4 and the fifth observation region Ob5.

  Here, as the angle formed by the optical axis of the camera 40 and the normal passing through the screen of the display panel 10 is larger, a wider range of images can be captured by the camera 40. According to each of the above-described embodiments, the fourth observation region There is an advantage that a wide range of images can be taken by the camera 40 as compared with the aspect in which the camera 40 is arranged in each of the Ob4 and the fifth observation region Ob5.

  Further, for example, the camera 40 may be arranged in each of the three or more observation regions Ob, or the camera 40 may be arranged in only one observation region Ob.

(3) Modification 3
In each of the above-described embodiments, in the alignment between the lenticular lens 20 and the display panel 10, each image display on the display panel 10 is displayed such that the images to be photographed by the cameras 40 arranged in the respective observation regions Ob are numbers. Although the aspect which controls the element e is illustrated, the aspect of the image which should be image | photographed with the camera 40 arrange | positioned at each observation area | region Ob is arbitrary. For example, an image to be taken by the camera 40 arranged in each observation area Ob can be an alphabet.

(4) Modification 4
In each of the above-described embodiments, a mode in which the display device 100 includes the lenticular lens 20 is illustrated. However, the present invention is not limited to this. For example, the display device 100 may include a parallax barrier. In short, the display device 100 only needs to include an optical progression control unit that controls display light emitted from each of the plurality of element groups of the display panel 10 to advance to different observation regions Ob.

(5) Modification 5
In each of the above-described embodiments, a mode in which different images are provided in each of the eight observation regions Ob (Ob1 to Ob8) is illustrated. However, the present invention is not limited to this, and each of at least two observation regions Ob is mutually connected. Any mode that provides different images may be used.

  Further, in each of the above-described embodiments, a mode in which the interval between the observation regions Ob is set so as to be the distance between the eyes of the observer is illustrated, but not limited to this, the interval between the observation regions Ob May be larger than the distance between the eyes of the observer, and different images may be provided to a plurality of observers located in each observation region Ob. The display device 100 according to the present invention may be a two-screen display in a car navigation device, for example. In this case, for example, a car navigation image can be observed for a driver seat person, and other images can be observed for a passenger seat person.

(6) Modification 6
In each of the embodiments described above, as means for fixing the lenticular lens 20 to the display panel 10, an adhesive layer 22 made of an ultraviolet curable adhesive and an ultraviolet irradiation unit for irradiating the adhesive layer 22 with ultraviolet rays. However, the present invention is not limited thereto, and the mode of the fixing means for fixing the lenticular lens 20 to the display panel 10 is arbitrary. For example, the adhesive layer 22 may be composed of a thermosetting adhesive, and in the fixing step, the adhesive may be cured by applying heat from a heat source to the adhesive layer 22. Further, for example, the adhesive layer 22 may be configured with an adhesive that cures with time.

(7) Modification 7
In each of the above-described embodiments, the aspect in which the electro-optical element e is a liquid crystal element is illustrated. However, the present invention is not limited to this. For example, the electro-optical element e is organic between each electrode (anode and cathode) facing each other. It can also be set as the aspect which consists of an OLED element which interposed EL layer. In this case, unlike the above-described embodiments, the backlight 30 and the polarizing plate are not necessary, and thus there is an advantage that the configuration is simplified. In short, the electro-optical element e may be an element whose optical characteristics such as light emission characteristics and light transmission characteristics change according to the applied electric energy.

(8) Modification 8
In each of the above-described embodiments, an example in which the adjustment mechanism 60 automatically performs alignment between the lenticular lens 20 and the display panel 10 in accordance with the control signal output from the control signal calculation circuit 50 in the adjustment step is illustrated. However, the present invention is not limited to this. For example, without providing the control signal calculation circuit 50, a person manually moves the adjustment mechanism 60 while observing an image actually captured by the camera 40, and the display panel. It is also possible to adopt a mode in which alignment with 10 is performed.

(9) Modification 9
In each of the above-described embodiments, in the adjustment process, the difference between the image actually captured by each camera 40 and the image to be captured by each camera 40 is eliminated (that is, the image actually captured by each camera 40). The mode of adjusting the position of the lenticular lens 20 with respect to the display panel 10 is illustrated as an example, so that the amount of deviation between the image and the image to be photographed by each camera 40 becomes zero). The amount of adjustment can be set arbitrarily. In short, any mode may be used as long as the position of the lenticular lens 20 with respect to the display panel 10 is adjusted so that the difference between the image actually captured by each camera 40 and the image to be captured by the camera 40 is reduced.

It is a perspective view which shows the display apparatus which concerns on 1st Embodiment. It is sectional drawing of the display apparatus which concerns on 1st Embodiment. It is a figure which shows the outline of the manufacturing apparatus which concerns on 1st Embodiment. It is a figure which shows the image which should be image | photographed with each camera. It is a figure which shows an example of the image actually image | photographed with each camera. It is a figure which shows the state which the lenticular lens inclines with respect to the display panel. It is a figure which shows an example of the image actually image | photographed with each camera in the state of FIG. It is sectional drawing of the display apparatus which concerns on 2nd Embodiment. It is a figure which shows the outline of the manufacturing apparatus which concerns on 2nd Embodiment. It is a figure which shows the outline of the manufacturing apparatus which concerns on 3rd Embodiment. It is a figure which shows the other example of the manufacturing apparatus which concerns on 3rd Embodiment. It is a figure which shows the 3rd image and 6th image which were image | photographed with one camera. It is a figure which shows the outline of the manufacturing apparatus which concerns on the modification of this invention. It is a figure which shows the outline of the manufacturing apparatus which concerns on the modification of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Display panel, 16 ... 1st polarizing plate, 18 ... 2nd polarizing plate, 20 ... Lenticular lens (light progress control part), 21 ... Cylindrical lens, 22 ... Adhesive layer, 40 ... Camera , 50... Control signal calculation circuit, 60... Adjusting mechanism, 70... Ultraviolet irradiation unit, 80... Third image mirror, 82. Electro-optic element, Ob: Observation area.

Claims (8)

A display panel in which a plurality of element groups each consisting of a plurality of electro-optic elements are disposed;
A display device comprising: a light progress control unit configured to control display light traveling from each of the plurality of element groups of the display panel to different observation regions so that different images are visually recognized in each observation region A manufacturing method comprising:
A photographing step of photographing an image represented by the display light traveling through the light progression control unit from the element group with a camera disposed in a predetermined observation region;
An adjusting step of adjusting the light progress control unit with respect to the display panel so that a difference between an image actually captured by the camera in the capturing step and an image to be captured by the camera is reduced;
A fixing step of fixing the light progress control unit to the display panel after the adjusting step;
A manufacturing method of a display device characterized by the above. In the photographing step, an image represented by the display light traveling in the observation area where the camera is arranged, with the camera arranged in each of at least two of the plurality of observation areas. Shoot and
In the adjusting step, the light progression control unit is connected to the display panel so that a difference between an image actually taken by each camera in the photographing step and an image to be taken by the camera is reduced. Adjust
The method for manufacturing a display device according to claim 1. In the photographing step, a first image and a second image of a plurality of images represented by display light traveling through the light progression control unit from each of the plurality of element groups are displayed in different colors. In addition, by reflecting at least one of the first image and the second image, the first image and the second image are photographed by one camera.
In the adjustment step, the light progression control unit is placed on the display panel so that a difference between an image actually taken by the camera in the photographing step and an image to be taken by the camera is reduced. Adjust,
The method for manufacturing a display device according to claim 1. Controlling the display panel so that each of a plurality of images represented by display light traveling from the plurality of element groups to each observation region through the light progression control unit indicates a different number;
The method for manufacturing a display device according to any one of claims 1 to 3, wherein: In the photographing step and the adjusting step, a polarizing plate is disposed between the camera and the light progress control unit.
The method for manufacturing a display device according to any one of claims 1 to 4, wherein: After the adjusting step, before the fixing step, the step of moving the polarizing plate from the space between the camera and the light progress control unit,
The method for manufacturing a display device according to claim 5. A display panel in which a plurality of element groups each consisting of a plurality of electro-optic elements are disposed;
An apparatus for manufacturing a display device, comprising: a light progress control unit that controls display light emitted from each of the plurality of element groups of the display panel to travel to different observation regions;
A camera disposed in a predetermined observation region to capture an image represented by the display light traveling from the element group through the light progression control unit;
An adjustment mechanism that adjusts the light progress control unit with respect to the display panel so that a difference between an image actually captured by the camera and an image to be captured by the camera is reduced;
Fixing means for fixing the light progress control unit adjusted by the adjustment mechanism to the display panel;
The manufacturing apparatus characterized by the above-mentioned. Comprising a polarizing plate disposed between the camera and the light progression control unit,
The manufacturing apparatus according to claim 7.

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