TWI384258B - Automatic registration system and method for 3d liquid crystal display - Google Patents

Description

Automatic alignment system for stereoscopic liquid crystal display and method thereof

The present invention is an automatic alignment system and method thereof, and more particularly to an automatic alignment system for a stereoscopic liquid crystal display and a method thereof.

In recent years, 3D stereoscopic displays have begun to flourish, and it will become an important development direction for next generation displays. The micro-phase phase difference plate and the display panel are used to face each other, so that the left and right eyes of the viewer wearing the polarized glasses can respectively see the parallax images seen by the left and right eyes, and the micro-phase difference stereoscopic display can be easily fabricated. . The principle is that the phase difference film which is originally stretched to 1/2 wavelength (λ/2) is processed into a micro-phase phase difference plate having a width of about the height of the liquid crystal panel, and then aligned with the panel to fix the liquid crystal. The polarization direction of the panel base row (or even row) is 90 degrees perpendicular to the direction of the even row (or base row), so that when the display panel's base row displays the left eye (or right eye) and the even row displays the right eye (or the left eye) screen, and when the observer wears the matching polarizer glasses, the left and right eyes can see the left and right eye images that the eye should see, so that when the appropriately arranged stereoscopic image is displayed by the display, It can be displayed so that the viewer can see the stereo image. To have a high-quality stereoscopic display, the alignment when the micro-phase phase difference plate and the display panel are fixed relative to each other is a very important key technology. It is not common for the micro-phase phase difference plate and the display panel to be fixed in a fixed manner, especially in how to represent the micro-phase phase difference plate and the display panel for positive fixed quantitative data and to use automatic alignment.

U.S. Patent No. 5,999,840 discloses an image for surgery The data registration system uses a plurality of cameras to capture images of various parts of the patient, and after processing, discriminates the actual distance of the measured object and the direction of the object to be measured, and then aligns the positions. U.S. Patent No. 7,319,506 discloses a aligning system and method for generating alignment marks for self-referencing interferometers for alignment of two overlapping images. However, in the aforementioned patents, the techniques and methods used thereof obviously cannot contribute to the package fitting of the stereoscopic display and the phase difference plate.

Accordingly, the inventors of the present invention have developed an automatic alignment system for a stereoscopic liquid crystal display and a method thereof, which can provide a good solution to the deficiencies of the prior art.

The main object of the present invention is to provide an automatic alignment system for a stereoscopic liquid crystal display, which uses the captured superimposed image for comparison and adjustment feedback control to achieve accurate alignment.

In order to achieve the above object, the present invention provides an automatic alignment system for a stereoscopic liquid crystal display, which is used for aligning a micro-phase retardation film with a liquid crystal display, comprising: a control unit having image processing and storage functions. An image capturing unit electrically connected to the control unit; and an adjusting device electrically connected to the control unit and including a first holding unit for holding the micro phase difference film and for holding the liquid crystal display a second holding unit, wherein the first clamping unit and the second clamping unit are mutually movable; wherein the adjusting device clamps and overlaps the micro-phase difference film and the liquid crystal display, and the image capturing unit transmits through the image capturing unit The polarizer captures the image of the overlapped micro-difference film and the liquid crystal display, and the control unit processes the captured image and controls the relative positions of the first holding unit and the second holding unit.

In order to achieve the above object, the present invention further provides an automatic alignment method for a stereoscopic liquid crystal display, which is used for aligning a micro-phase difference film with a liquid crystal display, and includes the steps of: (a) providing an automatic alignment system, The automatic alignment system includes a control unit, an image capturing unit, and an adjusting device. The image capturing unit and the adjusting device are respectively electrically connected to the control unit, and the adjusting device respectively holds the differential phase film and the The liquid crystal display is overlapped, the control unit has image processing and storage functions; (b) the image capturing unit moves to the overlapping micro-level phase difference film and the liquid crystal display; (c) the control unit adjusts the micro-phase phase difference film and the liquid crystal (d) the image capturing unit captures the image through a polarizer; (e) the control unit processes the captured image to determine whether it is aligned; if yes, proceeds to step (f); And returning to step (c); and (f) adjusting the device to adhere the micro-phase difference film to the liquid crystal display.

In order to enable your review committee to have a better understanding and recognition of the structural purpose and efficacy of the present invention, the detailed description is as follows.

Please refer to FIG. 1, which is a schematic diagram of an automatic alignment system for a stereoscopic liquid crystal display of the present invention. The automatic alignment system 1 includes a control computer 10, a camera 12 and a motor controller 14. The control computer 10 has an image processing and storage function, and the camera 12 and the motor controller 14 are respectively electrically connected to the control computer 10, and the motor controller 14 and the motor controller 14 respectively The drive motor 141 and the drive motor 143 are electrically connected, and the drive motor 141 and the drive motor 143 are connected to the suction cup 140 and the carrier 142. The suction cup 140 is used for adsorbing and holding a micro phase difference film M, and the carrier 142 is used for carrying and holding a liquid crystal display L. The micro phase difference film M and the liquid crystal display L are kept at a small pitch, so the control computer 10 is controlled. The driving motor 141 and the driving motor 143 can be controlled by the motor controller 14, and the driving motor 141 and the driving motor 143 can respectively change the relative positions of the suction cup 140 and the carrier 142, so that the superposition of the differential phase film M and the liquid crystal display L can be adjusted. The angle of intersection. In FIG. 1, the camera 12 captures the appearance image through a polarizing film P, and the camera 12 can also capture the superimposed image of the differential phase film M and the liquid crystal display L.

Referring to FIG. 2A and FIG. 2B, the carrier arm 142a and the carrier arm 142b are used to carry the liquid crystal display L. If the image of the micro-phase difference film M and the liquid crystal display L captured by the camera 12 is as shown in FIG. 2A, the control computer 10 moves the carrier arm 142a in the Y direction, or the moving carrier arm 142b. Moving in the -Y direction for adjustment, as shown in Fig. 2B (of course, it is also possible to simultaneously move the carrier arm 142a in the Y direction and the actuator arm 142b to move in the -Y direction for adjustment).

Otherwise, as shown in Figure 3A and Figure 3B. If the image of the micro-phase difference film M and the liquid crystal display L captured by the camera 12 is as shown in FIG. 3A, the control computer 10 will move the carrier arm 142a in the -Y direction, or the moving carrier arm 142b The Y direction is moved to adjust, as shown in Fig. 3B (of course, it is also possible to simultaneously move the carrier arm 142a in the -Y direction and the moving carrier arm 142b to move in the Y direction for adjustment).

The aforementioned adjustment can be stopped as long as there is no moiré in the whole picture. Stop (picture shown in Figure 4).

Referring again to FIG. 5, this figure is a specific embodiment of the automatic alignment machine used in the present invention. In Fig. 5, the pedestal 5 is sequentially mounted with a camera 52, a carrier arm 540a and a carrier arm 540b, a carrier arm 542a and a carrier arm 542b from top to bottom. The carrier arm 540a and the carrier arm 540b are used to hold the micro phase difference film M, the carrier arm 542a and the carrier arm 542b are used to hold the liquid crystal display L, and the camera 52 can be moved two-dimensionally along the axis 5A or the axis 5B (of course It can also be designed to move along the three-dimensional direction. These changes are based on the needs of the user and will not be described here.

Referring to FIG. 6 again, the figure is an automatic alignment method used in the present invention, comprising: Step 61 - overlapping the micro-phase difference film and the liquid crystal display by using the automatic alignment system of the present invention, and automatically aligning the system The control computer in the system has image processing and storage functions.

Step 62 - The control computer controls the camera to move to the overlapping micro-level phase difference film and the liquid crystal display.

Step 63 - The control computer adjusts the overlapping angle of the differential phase film and the liquid crystal display by the motor controller, the driving motor and the carrier arm (or the suction cup).

Step 64 - The camera captures an image of the liquid crystal display via the micro-phase difference film through a polarizer.

Step 65 - The control computer processes the captured image to determine whether it is aligned; if yes, proceed to step 66; otherwise, return to step 63.

Step 66 - Bonding the differential phase film to the liquid crystal display.

Of course, in the method flow chart of FIG. 6, a package/paste device may be added to the automatic alignment system, and when the image comparison in step 65 is completed (the table) After the alignment is completed, the package/bonding device can be used to dispense between the micro-phase retardation film and the opposite surface of the liquid crystal display (can be dispensed on the differential phase film or dispensed on the liquid crystal display), after The two can be bonded during the packaging of step 66.

Thus, the present invention provides an automatic alignment system for a stereoscopic liquid crystal display and a method thereof, which utilizes an interference pattern generated between a differential phase difference film and a liquid crystal display for alignment, alignment, and use of a camera. Instant correction, according to the image captured by the camera, the position error is judged by the calculator, and the relative position and angle between the display panel and the micro-phase phase difference plate are adjusted with the automatic fine-tuning mechanism to make the two mutually align with each other, and finally cooperate with the automatic packaging system. Encapsulation, complete the automatic alignment and fixing between the micro-phase phase difference plate and the display panel, which is novel and progressive compared with the prior art technology, and is patented so that the practitioners of the relevant industries can use it accordingly. Promote industrial development.

The above is only the best mode for carrying out the invention, and the scope of the invention is not limited thereto. That is to say, the equivalent changes and modifications made by the applicant in accordance with the scope of the patent application of the present invention should still fall within the scope of the patent of the present invention. I would like to ask your review committee to give a clear explanation and pray for it.

1‧‧‧Automatic alignment system

5‧‧‧ pedestal

10‧‧‧Control computer

12‧‧‧ camera

14‧‧‧Motor controller

52‧‧‧ camera

140‧‧‧Sucker

141‧‧‧Drive motor

142‧‧‧ Vehicles

142a‧‧‧ arm

142b‧‧‧ arm

143‧‧‧Drive motor

540a‧‧‧ arm

540b‧‧‧ arm

542a‧‧‧ arm

542b‧‧‧arm

L‧‧‧LCD display

M‧‧‧Microphase retardation film

P‧‧‧ polarizing film

5A‧‧‧Axis

5B‧‧‧Axis

1 is a schematic diagram of an automatic alignment system for a stereoscopic liquid crystal display according to the present invention; FIG. 2A and FIG. 2R are schematic diagrams showing interference fringes and an adjustment method generated when the invention is attached; FIG. 3A and FIG. 3B are schematic diagrams showing the interference fringes and the adjustment method generated by the present invention during the bonding; FIG. 4 is a schematic diagram of the image after the bonding of the present invention is completed; FIG. 5 is an automatic pair used in the present invention. A specific embodiment of a forward machine; and Figure 6 is a flow chart of the automatic alignment method used in the present invention.

Claims (13)

An automatic alignment system for a stereoscopic liquid crystal display, which is used for aligning a micro-phase difference film with a liquid crystal display, comprising: a control unit having image processing and storage functions; an image capture unit, The control unit is electrically connected; and an adjusting device is electrically connected to the control unit and includes a first holding unit for holding the micro phase difference film and a second holding unit for holding the liquid crystal display, the first The clamping unit and the second clamping unit are mutually movable; wherein the adjusting device clamps and overlaps the micro-phase difference film and the liquid crystal display, and the image capturing unit captures the overlapped micro-position through a polarizer The phase difference film and the image of the liquid crystal display, the control unit processes the captured image and controls the relative positions of the first holding unit and the second holding unit. The automatic alignment system for a stereoscopic liquid crystal display according to claim 1, wherein the adjustment device further comprises a first driving unit, a second driving unit and a motor controller, the first driving unit and the first The two driving units are respectively connected to the first clamping unit and the second clamping unit, and the motor controller is electrically connected to the first driving unit, the second driving unit and the control unit respectively. The automatic alignment system for a stereoscopic liquid crystal display according to claim 1, wherein the image capturing unit is horizontally movable with respect to the overlapping micro-difference film and the liquid crystal display. An automatic alignment system for a stereoscopic liquid crystal display according to claim 1, wherein the image capturing unit is relative to the overlapping micro-position The phase difference film moves vertically with the liquid crystal display. The automatic alignment system for a stereoscopic liquid crystal display according to claim 1, wherein the first holding unit is a suction cup, and the micro-phase phase difference film is fixed by vacuum adsorption. An automatic alignment method for a stereoscopic liquid crystal display for aligning a micro-phase difference film with a liquid crystal display, comprising the steps of: (a) providing an automatic alignment system, the automatic alignment system comprising a control unit And an image capturing unit and an adjusting device, wherein the image capturing unit and the adjusting device are respectively electrically connected to the control unit, and the adjusting device respectively holds and overlaps the micro phase differential film and the liquid crystal display, wherein the control unit (b) the image capturing unit moves to the overlapping micro-level phase difference film and the liquid crystal display; (c) the control unit adjusts the overlapping angle of the micro-phase phase difference film and the liquid crystal display; (d) The image capturing unit captures the image through a polarizer; (e) the control unit processes the captured image to determine whether it is aligned; if yes, proceeds to step (f); if not, returns to step (c); And (f) adjusting the device to bond the differential phase film to the liquid crystal display. The automatic alignment method for a stereoscopic liquid crystal display according to claim 6, wherein the adjusting device further comprises a first driving unit, a second driving unit and a motor controller, the first driving unit and the first The two driving units are respectively connected to the first clamping unit and the second clamping unit, and the motor controller is electrically connected to the first driving unit, the second driving unit and the control unit respectively. The method for automatically aligning a stereoscopic liquid crystal display according to claim 6, wherein the image capturing unit is horizontally movable with respect to the overlapping micro-difference film and the liquid crystal display. The method for automatically aligning a stereoscopic liquid crystal display according to claim 6, wherein the image capturing unit is vertically movable with respect to the overlapping micro-difference film and the liquid crystal display. The automatic alignment method for a stereoscopic liquid crystal display according to claim 6, wherein the first holding unit is a suction cup, and the micro-phase phase difference film is fixed by vacuum adsorption. The method for automatically aligning a stereoscopic liquid crystal display according to claim 6, wherein the step (f) further comprises: performing a package/bonding unit between the micro-phase retardation film and the opposite side of the liquid crystal display; Package/fit. An automatic alignment method for a stereoscopic liquid crystal display according to claim 11, wherein the package/bonding unit is dispensed on the differential phase film. An automatic alignment method for a stereoscopic liquid crystal display according to claim 11, wherein the package/bonding unit is dispensed on the liquid crystal display.