STEREOSCOPIC THREE-DIMENSIONAL DISPLAY SYSTEM AND MANUFACTURING METHOD THEREOF

Abstract

A stereoscopic three-dimensional display and manufacturing method thereof includes a three-dimensional display and a depth sensor. The three-dimensional display includes a three-dimensional display module and a parallax optical module that corresponds to a plurality of first depth display portions and a plurality of second depth display portions and a first parallax optical portion and a second parallax optical portion. The depth sensor is electrically connected to the stereoscopic display module, and detects the distance between the user and the stereoscopic display, and selects whether all of the first depth display parts jointly output the first parallax image, or all of the second depth display parts jointly output the second parallax image, so that the user can view the stereoscopic imaging through the first parallax optical unit or the second parallax optical unit at different positions.

Claims

1. A stereoscopic three-dimensional display, including: a stereoscopic display module, including: a substrate; and a plurality of light-emitting elements, each of the light-emitting elements is arranged on the substrate, all of the light-emitting elements are staggered in a checkerboard format and divided into a plurality of first depth display parts and a plurality of second depth display parts, all of the first depth display parts jointly output a first parallax image, and all of the second depth display parts jointly output a second parallax image; a parallax optical module, including: a plurality of first parallax optical parts, each of the first parallax optical parts is respectively disposed on a light emitting side of one of the first depth display parts, so that the first parallax image can be displayed for a user at a distance from the stereoscopic three- dimensional display, and forming a first stereoscopic image in the eyes of the user and viewed from a depth position; and a plurality of second parallax optical parts, each of the second parallax optical parts is respectively disposed on a light emitting side of one of the second depth display parts, so that the second parallax image can be displayed for the user at a distance from the stereoscopic three-dimensional display, and forming a second stereoscopic image in the eyes of the user and viewed at a second depth position.

2. The stereoscopic three-dimensional display according to claim 1, wherein each of the first parallax image and the second parallax image is a frame.

3. The stereoscopic three-dimensional display according to claim 2, wherein each of the first depth display portions or each of the second depth display portions is equivalent to displaying a part of the pixels of each frame of a picture.

4. The stereoscopic three-dimensional display according to claim 3, wherein each of the first depth display portions and each of the second depth display portions are arranged in a matrix divided into nine viewing angle regions, and each of the viewing angle regions has at least two pixels, one of the pixels in each viewing area of each of the first depth display parts outputs the left-eye image in the first parallax image, and one of the pixels in each viewing area of the second depth display parts outputs the left-eye image in the second parallax image, and the other pixel in each of the viewing angle areas of each of the first depth display parts outputs the right- eye image in the first parallax image, and the other pixel in each of the viewing angle areas of the second depth display parts outputs the right-eye image in the second parallax image.

5. The stereoscopic three-dimensional display of claim 4, wherein the light-emitting elements include a plurality of red light-emitting elements, green light-emitting elements, and blue light-emitting elements, and each pixel includes one red light- emitting element, one green light-emitting element, and one blue light-emitting element.

6. The stereoscopic three-dimensional display of claim 4, wherein each of the light- emitting elements is a micro light-emitting diode, a quantum dot light-emitting diode, or an organic light-emitting diode.

7. The stereoscopic three-dimensional display as recited in claim 5, wherein each of the first parallax optical units includes: a first light-emitting layer provided on the light-emitting side corresponding to one of the first depth display portions, and thickness of the first light-emitting layer is in accordance with the light-emitting angle of each light-emitting element of the corresponding first depth display portion and the first depth position; and a first optical correction layer arranged on the light-emitting side of the first light-emitting layer, thickness and surface curvature of the first optical correction layer is in accordance with the refractive index of the selected material, the user's left and right eye at the first depth position and each viewing angle area; each of the second parallax optical parts includes: a second light-emitting layer provided on the light-emitting side corresponding to each of the second depth display portions, and the thickness of the second light-emitting layer is in accordance with the light- emitting angle and depth position of the second light-emitting element of the corresponding second depth display portion; and a second optical correction layer arranged on the light-emitting side of the second light output layer, the thickness of the second optical correction layer and its surface curvature are based on the refractive index of the selected material and the second depth position of the user's left and right eye and each viewing area.

8. The stereoscopic three-dimensional display according to claim 7, wherein each of the first parallax optical portions and each of the second parallax optical portions adjusts each of the first depth display portions and each of the second depth display portions, and the projection direction of the viewing angle area is such that the projection direction of each viewing angle area is the same as its orientation.

9. The stereoscopic three-dimensional display according to claim 7, wherein the first optical correction layer is provided with a plurality of first microstructure units, and the shape of each of the first microstructure units corresponds to one of the pixels and the second optical correction layer is provided with a plurality of second microstructure units, and the shape of each the second microstructure unit corresponds to one of the pixels.

10. The stereoscopic three-dimensional display according to claim 5, wherein the diagonal size of the first parallax optical part and the second parallax optical part is derived from the following formula:
L =D×tan(a/60) wherein, L is the diagonal size of the first parallax optical part or the second parallax optical part, D is the distance between the human eye and the stereoscopic three-dimensional display, and a is the distinguishable viewing angle of the human eye.

11. The stereoscopic three-dimensional display according to claim 8, wherein the parallax optical module is provided with a leveling layer above the first optical correction layer and the second optical correction layer.

12. A stereoscopic three-dimensional display system, including: the stereoscopic three-dimensional display as described in claim 1 and a depth sensor electrically connected to the stereo display module; wherein the depth sensor detects the depth distance between the user and the stereoscopic three-dimensional display to generate a depth signal, and the stereoscopic three-dimensional display receives the depth signal and selects the first depth display unit to output the first parallax image, or the second depth display unit to output the second parallax image.

13. A method for manufacturing a stereoscopic three-dimensional display, including the following steps: disposing a plurality of light-emitting elements on a three-dimensional substrate to form a three-dimensional display module, wherein the three- dimensional display module is divided into a plurality of first depth display parts and a plurality of second depth display parts staggered in a checkerboard format; disposing a packaging material on the light-emitting side of the three- dimensional display module; using an imprinting mold to imprint the packaging material; removing the imprinting mold from the packaging material, so that the packaging material is made into a parallax optical module, the parallax optical module includes a plurality of first parallax optical parts and a plurality of second parallax optical parts, wherein each of the first parallax optical parts of the parallax optical unit is correspondingly disposed on the light-emitting side relative to each of the first depth display units, and each of the second parallax optical units is correspondingly disposed on the light-emitting side relative to each of the second depth display units.

14. The method for manufacturing a stereoscopic three-dimensional display according to claim 13, wherein all of the first depth display parts jointly output a first parallax image, and all of the second depth display parts jointly output a second parallax image, and each of the first parallax image and the second parallax image is a frame.

15. The method for manufacturing a stereoscopic three-dimensional display according to claim 14, wherein each of the first depth display portions or each of the second depth display portions is equivalent to a pixel that displays a part of each frame.

16. The method for manufacturing a stereoscopic three-dimensional display according to claim 15, wherein each of the first depth display portions and each of the second depth display portions are divided into nine viewing angle regions as described in claim 4.

17. The method for manufacturing a stereoscopic three-dimensional display according to claim 16, wherein the imprinting mold further fabricates each of the first parallax optical parts into the following structure: a first light-emitting layer is provided on the light-emitting side corresponding to one of the first depth display portions, and the thickness of the first light-emitting layer is in accordance with the light-emitting angle and the first light-emitting element of the corresponding first depth display portion set at a depth position; and a first optical correction layer is arranged on the light-emitting side of the first light-emitting layer, the thickness and surface curvature of the first optical correction layer are according to the refractive index of the selected material, and the user's left eye and right eye at the projected first depth position and each viewing area; the structure of each of the second parallax optical parts is further fabricated as follows: a second light-emitting layer is provided on the light-emitting side corresponding to each of the second depth display portions, and the thickness of the second light-emitting layer is in accordance with the light- emitting angle and the depth position of the second light-emitting element of the corresponding second depth display portion; and a second optical correction layer is arranged on the light-emitting side of the second light output layer, the thickness and surface curvature of the second optical correction layer are according to the refractive index of the selected material, the left eye and right eye of the user at the projected second depth position and each viewing area.

18. The method for manufacturing a stereoscopic three-dimensional display according to claim 17, wherein the imprinting mold makes each of the first parallax optical portions and each of the second parallax optical portions adjusted for each of the projection directions of each viewing angle area of the first depth display portions and each of the second depth display portions, respectively.

19. The method for manufacturing a stereoscopic three-dimensional display according to claim 17, wherein the imprinting mold further forms the first optical correction layer into a plurality of first microstructure units, and the shape of each of the first microstructure units corresponds to one of the pixels, and the imprinting mold further forms the second optical correction layer into a plurality of second microstructure units, and the shape of each second microstructure unit corresponds to one of the pixels.

20. The method for manufacturing a stereoscopic three-dimensional display according to claim 13, wherein after the parallax optical module is manufactured, a leveling layer is fabricated on the parallax optical module.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0031] FIG. 1 is a schematic partial cross-sectional view of the stereoscopic three-dimensional display of the present invention.

[0032] FIG. 2 is a schematic diagram of outputting the first parallax image by the first depth display unit according to the present invention.

[0033] FIG. 3 is a schematic diagram of outputting a second parallax image by the second depth display unit according to the present invention.

[0034] FIG. 4 is a schematic diagram of the first parallax image output by the stereoscopic display of the present invention being viewed by the user.

[0035] FIG. 5 is a schematic diagram of the stereoscopic display of the present invention outputting a second parallax image viewed by the user.

[0036] FIG. 6 is a schematic diagram of the viewing angle area of one of the first depth display portion or the second depth display portion of the present invention.

[0037] FIG. 7 is a schematic partial cross-sectional view of the first parallax optical part of the present invention.

[0038] FIG. 8 is a schematic partial cross-sectional view of the second parallax optical part of the present invention.

[0039] FIG. 9 is a schematic diagram of the projection direction of each viewing angle area of the present invention.

[0040] FIG. 10 is a schematic diagram of the manufacturing process of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0041] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not used to limit the present invention.

[0042] The present invention provides a stereoscopic three-dimensional display. Please refer to FIG. 1. The three-dimensional display A includes a three-dimensional display module 1 and a parallax optical module 2. The three-dimensional display module 1 includes a substrate 10 and a plurality of light-emitting elements 12, each light-emitting element 12 is arranged on the substrate 10, and all the light-emitting elements 12 are staggered and divided into a plurality of first depth display portions 120 and a plurality of second depth display portions 122 in a checkerboard format. All the first depth display portions 120 (such as 2) of the first parallax image 3 (shown in FIG. 4) is output together, and all the second depth display units 122 (the portion of the diagonal grid in FIG. 3) collectively output the first parallax image 3 (shown in FIG. 4). Two parallax images 4 (as shown in FIG. 5), of the parallax optical module 2 includes a plurality of first parallax optical parts 20 and a plurality of second parallax optical parts 22, wherein each first parallax optical part 20 is correspondingly disposed opposite to each on the light output side of the depth display section 120, each second parallax optical section 22 is correspondingly disposed on the light output side relative to each second depth display section 122.

[0043] Please refer to FIG. 4, when the stereoscopic display A outputs the first parallax image 3 (the left bee image and the right bee image in FIG. 4), the user is at the first depth position D1 from the stereoscopic display A and the first parallax image 3 is viewed, and the first parallax image 3 forms a first stereoscopic image 5 in the eyes of the user. Please refer to FIG. 5, when the stereoscopic display A outputs the second parallax image 4 (the left bee image and the right bee image in FIG. 4), the user sees the first image at the second depth position D2 from the stereoscopic display A of two parallax images 4, and the second parallax images 4 form a second stereoscopic image 6 in the eyes of the user. Further, if the substrate 10 is a transparent substrate, while forming the first three-dimensional image 5, the user's eyes actually see through the three-dimensional display A, and the first three- dimensional image 5 and the physical image B of the actual scene behind the display are seen at the first depth of field position D3. As shown in FIG. 5, while the second stereoscopic image 6 is formed in the user's eyes, the user's eyes actually see through the stereoscopic display A, and look like the second stereoscopic image at the second depth of field position D4. Image 6 is an image fused with the physical image B of the actual scene.

[0044] In the present invention, the first parallax image 3 or the second parallax image 4 is a frame showing different depths, and this frame allows the user's eyes to see the first parallax image 3 and the second parallax image 4, to become the first stereoscopic imaging 5 or the second stereoscopic imaging 6 in the eyes of the user. Also, referring to FIGS. 2 and 3 again, the first parallax image 3 or the second parallax image 4 is output by all the first depth display parts 120 or all the second depth display parts 122, and the first parallax image 3 and the second parallax image 4 will not be output at the same time, because each of the first depth display portion 120 or the second depth display portion 122 is equivalent to displaying a part of the pixel 70 of each frame, and each first depth display portion 120 or the second depth display portion 122 is so small that the human eye cannot distinguish such a difference, so the first stereoscopic image 5 or the second stereoscopic image 6 seen by the human eye is a completed picture.

[0045] In the present invention, each light emitting element 12 may be a three-dimensional micro light emitting diode, a quantum dot light emitting diode, or an organic light emitting diode, so that each first depth display portion 120 and each second depth display portion 122 outputs the first parallax image 3 or the second parallax image 4 from the respective light-emitting diodes.

[0046] Please refer to FIG. 6. In the present invention each first depth display portion 120 and each second depth display portion 122 are arranged in a matrix divided into nine viewing angle regions 7, and each viewing angle region 7 has among them, at least two pixels 70, one of the pixels 70 in each viewing angle area 7 of each first depth display portion 120 outputs the left-eye image in the first parallax image 3, and one of the pixels 70 in each viewing angle area 7 of each second depth display portion 122 outputs the left- eye image in the second parallax image 4, another pixel 70 in each viewing area 7 of each first depth display unit 120 outputs the right-eye image in the first parallax image 3, and another pixel 70 in each viewing area 7 of each second depth display unit 122 outputs the right-eye image in the second parallax image 4.

[0047] In the present invention, each light-emitting element 12 includes a plurality of red light-emitting elements, green light-emitting elements, and blue light-emitting elements, and each pixel 70 includes one red light-emitting element, one green light-emitting element, and one blue light-emitting element, and each light-emitting element 12 is a micro light- emitting diode, a quantum dot light-emitting diode, or an organic light-emitting diode.

[0048] Referring to FIG. 7, in the present invention each first parallax optical portion 20 includes a first light-emitting layer 200 and a first optical correction layer 202, and each first light-emitting layer 200 is disposed corresponding to each on the light-emitting side of a depth display portion 120, the first optical correction layer 202 is provided on the light- emitting side of the first light-emitting layer 200, wherein the thickness tl of the first light- emitting layer 200 is based on the light emission of the corresponding to the first depth display portion 120, the light output angle of the element 12, and the first depth position Dl. The thickness t3 of the first optical correction layer 202 and its surface curvature R1 are based on the refractive index of the selected material and the image projected to the user at the first depth position D1, the left eye and the right eye, and each viewing angle area 7 are provided to achieve the purpose of outputting the required first parallax image 3.

[0049] Please refer to FIG. 8, each second parallax optical portion 22 includes a second light-emitting layer 220 and a second optical correction layer 222, respectively, and the second light-emitting layer 220 is provided on the light-emitting layer corresponding to each second depth display portion 122. Alternatively, each second optical correction layer 222 is provided on the light-emitting side of each second light-emitting layer 220, wherein the thickness t2 of the second light-emitting layer 220 is based on the light output of each light-emitting element 12 of the corresponding second depth display portion 122, the viewing angle, and the second depth position D2. The thickness of the second optical correction layer 222 and its surface curvature R2 are based on the refractive index of the selected material and the projection to the left and right eyes of the user at the second depth position D2, and each viewing area 7, so as to achieve the purpose of outputting the second parallax image 4.

[0050] Furthermore, since the first parallax optical section 20 and each second parallax optical section 22 need to be manufactured in accordance with the above conditions, the shape and thickness of the first parallax optical section 20 and each second parallax optical section 22 will be different. Different, generally speaking, in that the height design of the far vision lens is lower than the height design of the near vision lens. Please refer to FIG. 1, assuming that the first parallax optical part 20 is a near vision lens and the second parallax optical part 22 is a far vision lens. Therefore, the thickness of the first parallax optical portion 20 is greater than that of the second parallax optical portion 22. In order to flatten the surface of the stereoscopic display A, the parallax optical module 2 can be provided with a filling layer 8 (see FIG. 1) above the first optical correction layer 202 and the second optical correction layer 222 for filling the height difference between the first optical correction layer 202 and the second optical correction layer 222 is flattened to achieve the purpose of surface flattening.

[0051] In the present invention, please refer to FIG. 9, each first parallax optical portion 20 and each second parallax optical portion 22 respectively adjusts the viewing angles of each first depth display portion 120 and each second depth display portion 122. The projection direction of the area 7 makes the projection direction of each viewing angle area 7 the same as its orientation. Furthermore, the projection directions of the light emitted by each light- emitting element 12 in each viewing angle area 7 through each first parallax optical portion 20 and each second parallax optical portion 22 are respectively as described, wherein the viewing angle 7 at the central position of the projection direction is toward the front, the projection direction of the viewing angle area 7 on the left side of the middle column is toward the left of the center, and the projection direction of the viewing angle area 7 on the right of the middle column is toward the right of the center, and the projection direction of the viewing angle area 7 on the upper left is toward the upper left direction, the projection direction of the viewing angle area 7 above the central position is toward the middle upward direction, the projection direction of the viewing angle area 7 on the upper right is toward the upper right direction, the projection direction of the viewing angle area 7 on the lower left is toward the lower left direction, the projection direction of the viewing angle area 7 below the center position is toward the middle downward direction, and the projection direction of the lower right viewing angle area 7 is toward the lower right direction. Furthermore, each first parallax optical portion 20 and each second parallax optical portion 22 use the viewing angle regions 7 of the first parallax optical portion 20 and the second parallax optical portion 22 to make the first parallax optical portion 20 and the second parallax optical portion 20 of the second parallax optical portion 22 can provide a larger 3D image field of view (more than 170 degrees) than a traditional see-through display, and can reduce the problem of crosstalk between images and blurring of stereo images due to insufficient viewing angle.

[0052] Furthermore, please refer to FIG. 1, FIG. 7, and FIG. 8. The first optical correction layer 202 is provided with a plurality of first microstructure units 2020, and the shape of each first microstructure unit 2020 corresponds to one of the pixels 70, the second optical correction layer 222 is provided with a plurality of second microstructure units 2220, each of the second microstructure units 2220 corresponds to one of the pixels, wherein each first microstructure unit 2020 and each second microstructure unit 2220 is a lenticular lens. The surface curvature R1 of the first optical correction layer 202 further refers to the surface curvature of each first microstructure unit 2020, and the surface curvature R2 of the second optical correction layer 222 further refers to the surface curvature of each first microstructure unit 2020. Furthermore, the center point position of the surface curvature R1 of each first optical correction layer 202 is the vertical projection position of each first light-emitting layer 200 relative to the center of each pixel 70, and the center point position of the surface curvature R2 of each second optical correction layer 222 is the vertical projection position of each second light-emitting layer 220 relative to the center of each pixel 70.

[0053] In the present invention, the diagonal size of the first parallax optical portion 20 and each second parallax optical portion 22 is determined based on the distance between the adjacent first microstructure unit 2020 and the second microstructure unit 2220 when the user views the screen. In terms of design, further, the diagonal size of the first parallax optical portion 20 or each second parallax optical portion 22 is derived as follows:

L =D×tan(a/60)

Where L is the diagonal size of the first parallax optical part 20 or the second parallax optical part 22 (unit: inch), D is the distance between the human eye and the stereoscopic display A (unit: inch), and a is the resolution angle of view (unit: minute of angle) of the human eye and is a unit for measuring plane angles. A complete circle is divided into a central angle of 360 degrees, and every 1 degree is equal to 60 minutes, and every 1 minute is equal to 60 seconds.

[0054] The present invention also provides a method for manufacturing a stereoscopic three-dimensional display. Please refer to FIG. 10, which includes the following steps: (S101) A plurality of light-emitting elements 12 are arranged on a substrate 10 to become a stereoscopic three-dimension display module 1, wherein all the light-emitting elements 12 are staggered in a checkerboard format and divided into a plurality of first depth display parts 120 and a plurality of second depth displays parts 122; (S102) Disposing a packaging material on the light-emitting side of the stereoscopic three- dimension display module 1; (S103) Imprint the packaging material with an imprint mold; (S104) The imprinting mold is removed from the packaging material to produce a parallax optical module 2. The parallax optical module 2 includes a plurality of first parallax optical parts 20 and a plurality of second parallax optical parts 22, each of which is a parallax optical unit 20 respectively disposed on the light emitting side opposite to one of the first depth display units 120, and each second parallax optical unit 22 is respectively disposed on the light emitting side opposite to one of the second depth display units 122.

[0055] In the present invention, the first parallax image 3 is output by all the first depth display units 120, the second parallax image 4 is output by all the second depth display units 122, and each first depth display unit 120 or second depth display unit 122 displays the pixels 70 of a part of each frame.

[0056] Each first depth display portion 120 and each second depth display portion 122 are arranged in a matrix divided into nine viewing angle areas 7, and each viewing angle area 7 has at least two pixels 70, and one of the pixels 70 of each first depth display portion 120 in each viewing area 7 outputs the left-eye image in the first parallax image 3, and one of the pixels 70 in each viewing area 7 of each second depth display section 122 outputs the left-eye image in the second parallax image 4, the other pixel 70 in each viewing area 7 of each first depth display unit 120 outputs the right-eye image in the first parallax image 3, and the other pixel 70 in each viewing area 7 of each second depth display unit 122 outputs the right-eye image in the second parallax image 4.

[0057] In the present invention, the imprinting mold further fabricates each first parallax optical portion 20 into the aforementioned first light-emitting layer 200 and the first optical correction layer 202, and each second parallax optical portion 22 is further fabricated into the aforementioned second light-emitting layer 220 and second optical correction layer 222, the first optical correction layer 202 is further made of a plurality of first microstructure units 2020, and the second optical correction layer 222 is further made of a plurality of second microstructure units 2220. The projection directions of the plurality of second microstructure units 2220 and the light-emitting elements 12 in each viewing angle area 7 are also the same as those mentioned above, so they will not be repeated here.

[0058] In addition, as mentioned above, the heights of the first optical correction layer 202 and the second optical correction layer 222 are different. Therefore, after step 104 is completed, the filling layer 8 is disposed on the first optical correction layer. 202 and the second optical correction layer 222 to make the surface of the stereoscopic display A flattened.

[0059] Please refer to FIGS. 4 and 5, the present invention also provides a stereoscopic three-dimensional display system, including the aforementioned three-dimensional display A and a depth sensor C, wherein the three-dimensional display A has the structure shape and connection relationship as described above, and the depth sensor C is electrically connected to the stereoscopic display module 1 and detects the depth distance between the user and the stereoscopic display A to generate a depth signal. The stereoscopic display A receives the depth signal and selects the first depth display unit 120 to output the first parallax image 3, or the second depth display unit 122 to output the second parallax image 4.

[0060] For example, when the depth sensor C senses that the depth between the user and the stereoscopic display A does not exceed the first depth position D1, then the stereoscopic display module 1 will display all signals according to the received depth signal. Therefore, the first depth display unit 120 is selected to output the first parallax image 3, and when the depth sensor C senses that the depth between the user and the stereoscopic display A exceeds the first depth position D1, but does not exceed the second depth at position D2, the stereoscopic display module 1 selects the second depth display unit 122 to output the second parallax image 4 according to the received depth signal, but when the depth sensor C senses the depth between the user and the stereoscopic display A exceeds the second depth position D2, the output of the second parallax image 4 can be maintained, or the prompt screen can be selected to output, and the prompt screen prompts the user to advance to the second depth position D2 with graphics and text.

[0061] According to the above, the present invention can provide different parallax images for different depth positions, so that the user can receive the first parallax image 3 or the second parallax image 4 at different positions to generate a first stereoscopic image 5 or the second stereoscopic imaging 6, so that the first stereoscopic imaging 5 or the second stereoscopic imaging 6 can be matched with the entity image B at different positions, so that the first stereoscopic imaging 5 or the second stereoscopic imaging 6 can be combined with the entity image in a lifelike manner B, to achieve better visual effects.

[0062] The above detailed description is a specific description of possible embodiments of the present invention, but the foregoing embodiments are not intended to limit the scope of the present invention. Any equivalent implementation or modification that does not deviate from the technical spirit of the present invention should be included in the patent scope of this application.