KR100677964B1 - Lcos panel assembly of projection system and image matching method thereof - Google Patents

Abstract

An LCOS(Liquid Crystal On Silicon) panel assembly of a projection system and a screen matching method of the LCOS panel assembly are provided to easily match an LCOS panel with a quarter wavelength plate and improve picture quality by preventing particles from infiltrating into the LCOS panel and the quarter wavelength plate. An LCOS panel assembly of a projection system includes an LCOS panel(175), a panel holder(154), a quarter wavelength plate(151), a quarter wavelength plate holder(153), and an adhesive agent. The panel holder holds the LCOS panel and is combined with a quad. The quarter wavelength plate is located in front of the LCOS panel and polarizes incident light. The quarter wavelength plate holder is rotatably supported with respect to the panel holder. The quarter wavelength plate is fixed to the quarter wavelength plate holder. The adhesive is applied to the contact face of the quarter wavelength plate holder and the panel holder.

Description

LCOS panel assembly of projection system and image matching method

1 is a perspective view of a projection system in accordance with the teachings of the present invention.

2 is an exploded perspective view of a projection system display according to the present invention.

3 is a perspective view of an optical engine of the projection system of the present invention.

4 is a perspective view of the optical engine shown with the cover of the optical engine removed;

5 is a perspective view of a synthesis system in a projection system according to the present invention.

6 is a diagram illustrating the structure and operation of a synthesis system.

7 is a perspective view of an elcos panel assembly according to the present invention.

8 is an exploded perspective view of an elcos panel assembly according to the present invention.

<Explanation of symbols for the main parts of the drawings>

1: projection system 2: screen 3: front panel

4 back cover 5 reflection mirror 6 separation plate

151 1/4 wave plate 152 First sealer 153 1/4 wave plate holder

154: panel support 157: second sealer 175: elcos panel

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projection system, and in particular, in a reflective projection system in which an image is formed by an Elcos panel, an EL system of a projection system in which registration adjustment of an Elcos panel and a quarter wave plate is conveniently and reliably performed. It relates to a screen registration method of the coarse panel assembly and the Elcos panel assembly.

Elcos (LCOS: Liquid Crystal On Silicon, hereinafter referred to as 'Elcos' for convenience) is a type of the reflective liquid crystal display, which is a liquid crystal cell formed on a semiconductor substrate, unlike a conventional liquid crystal display, each pixel configuration By integrating the elements and the switching circuits in high density, XGA-level high resolution can be realized in a small size of about 1 inch.

For this reason, the Elcos panel is attracting attention as a display device of the projection system, and the technology development and commercialization of the Elcos panel and the projection display system using the same are actively progressing.

The full-color display is implemented by the Elcos projection system in which three Elcoses convert white light into R (red), G (green), and B (blue) light and correspond to R, G, and B light. The panel is used in a three-panel manner in which R, G, and B images implemented by each Elcos panel are synthesized as color images and projected onto a screen.

Such a general Elcos projection system includes a lighting system in which light is projected, a synthesis system for synthesizing each image of RGB formed on the Elcos panel after the light is projected, and a projection lens for projecting the light synthesized in the synthesis system. And a screen on which light projected from the projection lens is formed into an image.

In addition, three Elcos panels are separately fixed to the synthesis system, and red, green, and blue colors separated from white light are respectively incident on the Elcos panel and then reflected, and the reflected lights are synthesized with each other. In addition, a quarter wave plate is disposed at an adjacent position of the Elcos panel to improve the contrast of the image. The quarter wave plate serves to change linearly polarized light into circularly polarized light.

On the other hand, when the matching between the quarter wave plate and the elcos panel is not perfect, there is a problem that the contrast of the image is lowered and the color of the image is incorrectly expressed. Therefore, the image actually formed after the projection system is manufactured. It is common to see the matching of the quarter wave plate and the Elcos panel again.

However, when the production of the projection system is completed, since the adjustment of the quarter wave plate is not easy, there is a problem that causes difficulty in production.

In addition, when the quarter wave plate is manufactured to be movable, external foreign matter may flow through the gap portion between the quarter wave plate and the elcos panel. If the foreign matter is buried in the quarter wave plate, However, since the light passing through the foreign matter is blocked, the desired image is not formed. For example, if a foreign material gets on the red Elcos panel, the red light is not reflected from the Elcos panel. Therefore, the pixel that should ideally be white is a red color, a cyan color that is the sum of green and blue. Is indicated by.

The present invention is proposed to solve the above problems, and proposes an elcos panel assembly of a projection system and a screen matching method of the elcos panel that can easily match the elcos panel and the quarter wave plate. The purpose.

In addition, we propose a screen matching method of the Elcos panel assembly and the Elcos panel of the projection system in which the quality of the image is further improved by preventing the inflow of foreign substances into the interior of the Elcos panel and the quarter wave plate. The purpose.

It is also an object of the present invention to propose an elcos panel assembly and an elcos panel screen matching method of the projection system in which the elcos panel and the quarter wave plate can be adjusted even after the registration adjustment between the three elcos panels is completed. It is done.

Elcos panel assembly of the projection system according to the present invention for achieving the above object is an Elcos panel; A panel support part supporting the elcos panel from the front and fastened to the quad; A quarter-wave plate formed in front of the elcos panel to polarize incident light; A quarter wave plate holder supported in a state rotatable with respect to the panel support and fixed with the quarter wave plate; And an adhesive injected into a contact surface of the quarter wave plate holder and the panel support.

According to another aspect of the present invention, there is provided a method for screen matching of an elcos panel assembly in which a one-wavelength plate holder on which a quarter wave plate is supported is rotatably supported relative to a panel support portion supporting an elcos panel. Manufacturing a panel assembly; Combining a plurality of Elcos panel assemblies to produce a synthetic system; Performing screen registration between the elcos panel assemblies; And after the matching between the quarter wave plate and the elcos panel is performed, an adhesive is cured to bond the quarter wave plate holder and the elcos panel assembly together.

According to the present invention as proposed, there is an advantage that the screen matching of the projection system and the optimization of the contrast ratio can be conveniently performed. In addition, foreign matters to the Elcos panel and the quarter wave plate can be prevented, so there is an advantage that the deterioration of the image is prevented.

Hereinafter, the ELCO panel assembly of the projection system and the projection system according to the spirit of the present invention will be described in detail with reference to the drawings.

1 is a perspective view of a projection system according to the spirit of the present invention, Figure 2 is an exploded perspective view of a projection system display according to the present invention.

1 and 2, the projection system 1 according to the present invention includes a screen 2 on which an image is formed, a front panel 3 disposed below the screen 2, and a rear side of the screen. A back cover 4 is included.

In addition, a space provided between the screen 2 and the back cover 4 is provided with a separation plate 6 for dividing the projection space of the light and the accommodation space of the optical engine (see 10 in FIG. 3). In addition, a reflection mirror 5 is mounted on an inner surface of the back cover 4 so that the light projected from the optical engine 10 is reflected by the reflection mirror 5 to form an image on the screen 2.

In addition, the separation plate 6 is provided with a separation plate side opening 8 which communicates the projection space of the light and the accommodation space of the optical engine with each other, and the separation plate side opening 8 is formed into the optical engine 10. It is aligned with the air inlet 7, which is a passage through which air flows, so that the air inside the projection space of the light flows into the optical engine 10. The air introduced through the air inlet 7 is used as air for cooling the optical engine 10.

In FIG. 2, reference numeral 400 denotes a projection lens through which light is emitted from the optical engine 10, and the light emitted from the projection lens 400 is reflected toward the reflective mirror 5 and then reflected by the screen 2. ) To form an image.

Figure 3 is a perspective view of the optical engine of the projection system of the present invention and Figure 4 is a perspective view of the optical engine shown with the cover of the optical engine removed, with reference to Figures 3 and 4 the configuration and operation of the optical engine It demonstrates in detail.

The optical engine 10 includes an engine base 12 constituting the lower surface of the optical engine 10 and a plurality of parts placed on the upper surface of the engine base 12. In detail, an illumination system 200 for irradiating and refracting light, a synthesis system 100 for synthesizing an image of red-green-blue tricolor including an image signal by light emitted by the illumination system 200, and the synthesis system 100 Projection lens 400 to which the light is synthesized from the output is included.

In addition, power supply 350, which is not directly related to the formation of an image, may be further included, and fans 301 and 303 may be used to cool the heat generated by the optical engine 10. . At least an electronic ballast is formed in the power supply 350 to supply stable power to the lamp 201, and the fans 301 and 303 induce a forced flow of air to properly cool the optical engine 10. Serve

Each part of the above-described configuration will be described in detail for each part.

First, the illumination system 200 includes a lamp 201 operated as a light source, a first fly eye lens 231 and a second to improve the uniformity of the illumination light emitted from the lamp 201. Passing through the FEL 232, the Polarizing Beam Splitter (PBS) 233 disposed behind the second FEL 232, and the cells of the FEL 231, 232 A plurality of lenses 234, 235 and 236 for accurately projecting the light to the correct position of the Elcos panel, and a folding mirror for directing the traveling direction of the light source to the synthesis system 100; 237).

In detail, the PBS 233 uses a plurality of half-wave plates as a mechanism for converting all the light including the P-wave light into the S-wave in the illumination light, and the FEL 231 and 232 are the PBS 233. Let light enter the correct position. The illumination light includes a P wave, which is a Y-axis wavelength, and an S-wave, which is an X-axis wavelength, as the direction perpendicular to the traveling direction of the light, but the light of the P wave incident on the synthesis system 100 is a S wave by the PBS 233. After conversion, all the light is incident to the synthesis system 100 in the state of S wave. Therefore, since the P-wave light removed from the synthesis system is used again, it is possible to obtain the advantage that the utilization efficiency of the light is improved.

In detail, the folding mirror 237 is a mechanism that allows the light to be incident toward the synthesis system 100 by bending the illumination direction 90 degrees, and the inclination angle of the left, right, up, and down directions is adjusted so that the traveling direction is accurately adjusted. It is preferred that a predetermined mechanism is provided to which is adjusted.

In addition, each component of the illumination system 200 is seated on the illumination system housing 220 fixed to the engine base 12, the cover 210 is covered after each component is placed in the interior of the illumination system housing 220 The internal parts are protected from external shocks, and foreign material is prevented from entering into the illumination system 200. In addition, a hole 211 is formed at a predetermined position of the cover 210, and the heat generated in the internal space of each component constituting the illumination system 200 and the illumination system 200 is a natural convection phenomenon. To be discharged to the outside. Although one through-hole 211 is formed in the figure, a plurality of holes may be formed as necessary. Preferably, the through-hole 211 is formed at least in the vicinity of the PBS 233 so that the high heat generated in the PBS 233 is elevated by natural convection to be discharged to the outside.

After the S-wave light is incident on the synthesis system 100, the light is separated by wavelength, and is incident on each of the elcos panels, and is reflected by the elcos panel and synthesized in a state in which an image signal is included. It is emitted through. The detailed configuration of the synthesis system 100 will be described in detail later.

The cooling system of the optical engine in which the optical engine 10 is cooled will be described in detail.

The optical engine 10 has two fans 301 and 303 for forcing the air to flow and a plurality of guide structures for guiding the flow of air by the fans 301 and 303. The cooling system of the optical engine will be described based on the flow order of air.

First, the cool air accommodated in the space between the screen 2 and the back cover 4, that is, the projection space of the light, is introduced into the optical engine 10 through the air inlet 7. The air inlet 7 is formed in the cold air inlet guide 11 fixed to the side wall of the synthesis system 100. The cold air inflow guide 11 is introduced into the side of the synthesis system 100 by bending the advancing direction of the synthesis system 100, that is, laterally, after air is introduced through the air inlet 7 through the air inlet 7. The air introduced into the synthesis system 100 flows into the first fan 301 after cooling the heat inside the synthesis system 100.

The suction guide 302 is enclosed in an adjacent outer side of the first fan 301 so that the air introduced into the synthesis system 100 smoothly flows out. In addition, the air discharged from the first fan 301 is discharged to the power supply 350 to cool the heat generated by the power supply 350.

As can be seen from the structure as described, the cooling system by the first fan 301 allows the sound pressure provided from the first fan 301 to be transmitted to the synthesis system 100 and the cold air inflow guide 11. The air of the light projection space is made to be sucked through the separation plate side opening 8 and the air inlet 7.

In addition, the lamp 201 is formed in the second fan 303 on the side of the lamp 201 to cool. The second fan 303 includes air that is discharged from the first fan 301 in the vicinity of the power supply 350. The air is discharged from the first fan 301. To be discharged to the rear.

As can be seen from the above-described structure, the first fan 301 and the second fan 303 are seated in a position adjacent to where the heat source is placed to provide a suction force, thereby absorbing heat after cold air passes through the heat source. And it is made of a structure to be discharged after being sucked into the fan (301) (303).

5 is a perspective view of a synthesis system in the projection system according to the present invention, and FIG. 6 is a view illustrating the structure and operation of the synthesis system, and the structure and operation of the synthesis system 100 will be described in detail with reference to the drawing.

Referring to FIG. 5, the synthesis system 100 is a portion in which S-wave light is separated and synthesized to form an image. A plurality of quads and an elcos panel assembly are provided.

In detail, the synthesis system 100 includes three quads 121, 122 and 123, a quad housing 110 supporting the quads, and a single notch filter for removing unnecessary yellow light from S-wave light. notch filter 131, a dichroic mirror 132 that transmits blue light and reflects green and red light, and is fixed to the sides of the quads 121, 122, and 123 so that the color of red green blue Three liquid crystal on silicon panel assemblies 150, 160, 170, which are liquid crystal panels each forming an image, are included. The elcos panel assembly is formed in a structure adjacent to the surface of the quads 121, 122 and 123 at a predetermined position of the quad housing 110, so that light incident from the quads enters the correct position of the elcos panel. Be sure to

Of course, a plurality of filters, polarizers, and the like are further included in FIG. 5, and the operation of the synthesis system will be described with reference to FIG. 6.

Referring to FIG. 6, unnecessary yellow light is reflected and removed from the S-wave light incident on the single notch filter 131, and then incident on the dichroic mirror 132 to transmit blue light and reflect red and green light. do. Hereinafter, the progress of light will be described in detail in the order of blue light, red light, and green light.

First, the S-wave blue light transmitted through the dichroic mirror 132 first passes through the second reflective polarizer 133 to improve the purity of the S-wave. In other words, since the second reflective polarizer 133 only passes the light in the same direction as the optical axis of the S-wave blue light and filters light having the optical axis in the other direction, the S-wave purity is improved in the illumination light. You can get it. Therefore, it is possible to prevent a phenomenon in which unwanted light is incident and the image deteriorates.

Thereafter, the light reflected from the third quad 123 is incident to the third elcos panel assembly 170. The quad is a beam splitter that operates to reflect S-wave light and transmit P-wave light.

Subsequently, the light is incident on the third quarter wave plate 171 and the linearly polarized light is changed into circularly polarized light, and then is incident on the blue Elcos panel 173 to be converted into P-wave blue light in the state containing the blue image image and reflected therein. . Although the P-wave blue light is incident to the third quad 123 again, the P-wave blue light is transmitted through the third quad 123 as it is the P-wave blue light.

Thereafter, the light is incident on the third birefringent polarizer 137, polarized by 1/2 wavelength, and converted into S-wave blue light, and then incident on the first quad 121. The birefringent polarizing plate is a polarizing plate that allows light to be polarized selectively, and the function may be performed by a structure in which the arrangement state of the birefringent material is changed for each wavelength of light. Here, the third birefringent polarizer 137 is a birefringent polarizer to polarize 1/2 wavelength with respect to blue light.

Subsequently, the S-wave blue light incident on the first quad 121 is reflected by the first quad 121 because it is S-py, and then enters the projection lens 400.

In addition, the S-wave red light reflected by the dichroic mirror 132 passes through the first reflective polarizer 134 to improve S-wave purity, and then passes through the first birefringent polarizer 135 to be changed into P-wave red light. do. The first birefringent polarizing plate 135 is a polarizing plate using a birefringent material and polarizing red light at a half wavelength.

Thereafter, the second quad 122 is incident to the second quad 122. Since the incident light is P-wave red light, the second quad 122 passes through the second quad 122 as it is and then enters the first elcos panel assembly 150.

Subsequently, the first quarter wave plate 151 is converted into circularly polarized light, and then enters the red Elcos panel 175, and is converted into S-wave red light in the state containing a red image image and reflected therein, and the S-wave. Is reflected by the second quad (122).

Thereafter, the light is incident on the second birefringent polarizer 136 and is incident on the first quad 121 in a state in which the wavelength is polarized by 1/2 and changed into P-wave red light. Since the P-wave red light incident on the first quad 121 is P-py, it passes through the first quad 121 and is directed toward the projection lens 400.

In addition, the S-wave green light reflected by the dichroic mirror 132 passes through the first reflective polarizer 134 to improve the S-wave purity, and then passes through the first birefringent polarizer 135 as it is. Since the first birefringent polarizing plate 135 polarizes only red light by 1/2 wavelength as a polarizing plate using a birefringent material, it does not polarize green light.

Thereafter, the second quad 122 is incident to the second quad 122, and since the incident light is S-wave green light, the second quad 122 is incident on the second elcos panel assembly 160 after being reflected by the second quad 122.

Subsequently, the second quarter wave plate 161 is converted into circularly polarized light, and then enters the green Elcos panel 174, is changed into P-wave red light in the state including the green image image, and is reflected. Since it is a red light of, it passes through the second quad 122 as it is.

Thereafter, the second birefringent polarizing plate 136 is transmitted as it is and is incident to the first quad 121 without P-polarized blue light without polarization. The second birefringent polarizer 136 is changed by 1/2 wavelength only with respect to red and blue, and does not polarize green. The P-wave red light incident on the first quad 121 passes through the first quad 121 and is incident on the projection lens 400 because it is a P pie.

As described, red and green are incident to the projection lens in the P-wave state, and blue are incident to the projection lens 400 in the S-wave state. Subsequently, the light is emitted from the projection lens 400 and then reflected by the reflective mirror 5 to form an image on the screen 2. In this case, since the viewer views the image without detecting whether the light of the image is a P wave or an S wave, the viewer does not affect the viewing at all.

As described above, the three-color light including the red, green, and blue three-color images are synthesized and output through the projection lens 400. If the respective lights are not matched at the correct position, the image is distorted or the correct color is not. Will not be implemented. Therefore, when the fabrication of the projection system is performed, the matching process for each Elcos panel is further proceeded.

In particular, the quarter wave plate is a mechanism for converting the light incident on the Elcos panel from linearly polarized to circularly polarized light to improve the overall contrast ratio of the optical system. When the optical axis of polarization is not matched, the contrast ratio is lowered. Color deterioration occurs. In addition, when foreign matter enters the quarter wave plate and the quarter wave plate or the elcos panel is contaminated by the foreign matter, it is as described above that the image formed on the screen 2 becomes a different color. . The present invention is characterized by suggesting an Elcos panel assembly in order to improve such a problem.

7 is a perspective view of an elcos panel assembly according to the present invention, Figure 8 is an exploded perspective view of an elcos panel assembly according to the present invention. However, in the following description, the first elcos panel assembly is described as an example, but it is obvious that the present invention can be similarly applied to the second and third elcos panels.

Referring to FIGS. 7 and 8, the elcos panel assembly 150 includes an elcos panel 175 provided with liquid crystal, a cooling fin 155 for cooling the heat of the elcos panel 175, and the elcos panel 175. A quarter wave plate 151 is shown for causing light incident on the coarse panel 175 to be converted into circularly polarized light. In addition, to prevent the inflow of foreign materials into the Elcos panel 175 and the quarter wave plate 151, a plurality of configurations are further added.

In detail, the panel support part 154 on which the elcos panel 175 is supported, the second sealer 157 interposed on a contact portion of the panel support part 154 and the elcos panel 175, and And a quarter wave plate holder 153 placed in front of the panel support 154 and placed in a state in which the quarter wave plate 151 is fixed so as to be relatively rotated with respect to the panel support 154. And a first sealer 152 placed in front of the quarter wave plate holder 153.

The first sealer 152 is an article intervening in the contact surface of the quarter wave plate holder 153 and the quad 122 to prevent foreign matter from flowing through the contact portion. In addition, the second sealer 157 is for preventing foreign matter from flowing through the contact portions of the elcos panel 175 and the panel support 154. In addition, the quarter wave plate 151 is adhered to the quarter wave plate holder 153 by an adhesive such as silicon to prevent foreign matter from flowing through the contact surfaces of the quarter wave plate 151.

In addition, the 1/4 wave plate holder 153 and the panel support 154 are both in order to prevent foreign matter from flowing through the contact portion between the quarter wave plate holder 153 and the panel support 154. Is bonded. However, even when both are bonded at the production site, the matching between the quarter wave plate 151 and the Elcos panel 175 is matched and then the screen matching of the quarter wave plate 151 and the Elcos panel 175 is performed. This needs to be adjusted. For this purpose, an epoxy-based adhesive having a long curing time is used for the adhesive intervening at the contact portions of the quarter wave plate holder 153 and the panel support 154.

In detail, the material of the said adhesive material is the name of "EW2020" of 3M company, It is an epoxy type, heat resistance is 200 degreeC or more, excellent chemical resistance and corrosion resistance, and shrinkage rate is less than 5%. And the hardening time of an adhesive material reaches two to four weeks at normal temperature. However, the curing time varies depending on the ambient temperature, so when the ambient temperature reaches 120 degrees Celsius, the curing time is about 60 minutes.

Thus, the adhesive material with a long hardening time of an adhesive material is called a slow curing adhesive material after this.

A coupling relationship between the components constituting the Elcos panel assembly 150 will be described. An Elcos panel coupler 158 is formed at an edge of the Elcos panel 175, and the panel support 154 has a panel side fixing hole 159 at a position corresponding to the Elcos panel coupler 158. ) Is formed. By such a structure, a screw or the like is inserted into the Elcos panel coupler 158 and the panel side fixing hole 159 in a state where both are aligned, so that both can be firmly coupled.

In addition, a plurality of quad side fixing holes 162 are formed at the edge of the panel support part 154, and any article to which the quad side fixing holes 162 are fixed to the quad housing 110 or the quad 122 is fixed. In a state in which the fastening tool is fitted into the quad side fixing hole 162, the panel support 154 can be fixed with respect to the quad 122. In addition, in order to accurately match the three Elcos panel assembly 150, 160, 170, the position of the variable position as the connection structure of the connection portion of the quad 122 and the Elcos panel assembly 150 It may be possible to involve further rescue. The elbow panel assembly 150 may be adjusted with respect to the quad 122 by the variable position structure, and the elcos panel assembly 150, 160, 170 may be adjusted when the elbow panel assembly 150 is adjusted. Matching between course panels can be precisely tailored.

On the other hand, by allowing the relative rotation of the quarter wave plate holder 153 relative to the panel support 154, the matching of the quarter wave plate 151 and the elcos panel 175 can be adjusted. A rotating structure is further provided to meet the requirements.

First, a guide protrusion 163 is formed at one side of the panel support 154, and a protrusion insertion hole 165 is formed at a position of the quarter wave plate holder 153 corresponding to the guide protrusion 163. . The guide hole 164 is formed at the other side of the panel support 154, and the adjustment guide 166 is formed at the position of the quarter wave plate holder 153 corresponding to the guide hole 164. In addition, the handle 169 is extended to one side of the quarter wave plate holder 153 on which the adjustment guide 166 is formed so that the operator can rotate the quarter wave plate holder 153 while holding the handle. In addition, one side of the panel support 154 provided with the guide protrusion 163 is provided with a support side seating surface 168 having a curved shape, and a quarter corresponding to the support side seating surface 168. At the position of the wave plate holder 153, the holder-side seating surface 167 is similarly curved and formed.

In addition, the lower end of the adjustment guide 166 is bent so that when the body of the adjustment guide 166 is inserted into the guide hole 164, the end is caught on the back surface of the panel support 154 once 1/4 The wave plate holder 153 is not separated from the panel support 154.

The adjustment operation of the quarter wave plate holder 153 by the above-described structure will be described.

When the quarter wave plate holder 153 is pushed toward the panel support 154 from the front to the rear, the adjustment guide 166 is inserted into the guide hole 164 to bend the lower end of the adjustment guide 166. The back surface of the panel support part 154 is caught, and the guide protrusion 163 is caught by the protrusion insertion hole 165. By doing so, both end portions of the quarter wave plate holder 153 may be firmly supported by the panel support 154. In this state, the holder-side seating surface 167 and the support-side seating surface 168 are in contact with each other in a curved and smoothly bent state, so that the user uses the handle 169 to perform the quarter wavelength. When the plate holder 153 is rotated, the quarter wave plate holder 153 may be smoothly rotated in a state of being guided by the support side mounting surface 168.

Meanwhile, the adjustment operation of the quarter wave plate holder 153 is performed after screen matching between the elcos panel assemblies 150, 160, 170 is performed, and red, green, and blue screen matching is performed. It is preferable. To this end, the adhesive intervening on the contact surface of the quarter wave plate holder 153 and the panel support 154 allows a low-speed curing adhesive to be used.

By doing so, the Elcos panel assemblies 150, 160, 170 in three colors are placed in the correct positions with respect to the quads 121, 122, 123. Even after the overall registration of the screen is performed, the quarter wave plate holder 153 may be manipulated to adjust the screen match between the quarter wave plate 151 and the elcos panel 175.

The screen matching method of the projection system will be described again. First, the Elcos panel assembly 150 is manufactured as a finished product. In this case, the adhesive is formed on the contact surface of the quarter wave plate holder 153 and the panel support 154. It is involved. Thereafter, the elcos panel assemblies 150, 160 and 170 are coupled to the quad to produce the composite system 100, and after the composite system 100 is coupled to the optical engine, the elcos panel assemblies 150 and 160 are combined. In other words, screen registration between red, green, and blue images is performed.

Even after the assembling process of the synthetic system and the screen matching process between the elcos panel assemblies 150, 160 and 170, the low-speed curable adhesive is not cured. Therefore, the screen registration between the quarter wave plate 151 and the elcos panel 175 can be adjusted while rotating the quarter wave plate holder 153. Of course, if time passes later, the adhesive intervening on the contact portions of the quarter wave plate holder 153 and the panel support 154 is cured to form the quarter wave plate 151 with respect to the elcos panel 175. In addition to preventing the mating position of the substrate from being disturbed, the contact portion between the quarter wave plate holder 153 and the panel support 154 is completely sealed by an adhesive, so that no foreign matter is introduced through the contact portion between the projections. The screen deterioration does not occur even if the service life of the system becomes long.

The spirit of the present invention is not limited to the accompanying embodiments, and those skilled in the art who understand the spirit of the present invention can easily suggest other embodiments falling within the scope of the same idea by adding, changing, deleting, and adding components. It may be said that this is also included within the scope of the spirit of the present invention.

According to the present invention, it is possible to easily match the elcos panel and the quarter wave plate, and prevent the inflow of foreign substances into the interior of the elcos panel and the quarter wave plate, thereby further improving the image quality. Benefits can be obtained.

In addition, since the registration adjustment of the Elcos panel and the quarter wave plate can be performed even after the registration adjustment between the three Elcos panel in the manufacturing process of the projection system, the convenience in the manufacturing process can be improved.

Claims (8)

Elcos panel; A panel support part supporting the elcos panel from the front and fastened to the quad; A quarter-wave plate formed in front of the elcos panel to polarize incident light; A quarter wave plate holder supported in a state rotatable with respect to the panel support and fixed with the quarter wave plate; And And an adhesive injected into the contact surface of the quarter wave plate holder and the panel support. The method of claim 1, And said adhesive is a slow curing adhesive. The method of claim 1, And said quarter wave plate holder is elongated and at least one end is formed with a handle. The method of claim 3, wherein On the opposite side to which the handle is formed, the panel support and the quarter wave plate holder are provided in a corresponding corresponding curved shape. The method of claim 1, And an adjustment guide extending from one side of the quarter wave plate holder and having an end hooked to the back of the panel support to prevent the quarter wave plate holder from being pulled out. The method of claim 1, And a projection insertion hole formed at one side of the quarter wave plate holder and a guide protrusion formed at the panel support to guide rotation of the quarter wave plate. Manufacturing a unitary Elcos panel assembly in which the quarter-wave plate holder, on which the quarter-wave plate is supported, is rotatably supported relative to the panel support for supporting the Elcos panel; Performing screen registration between a plurality of Elcos panel assemblies; And After the matching between the quarter wave plate and the elcos panel is performed, an adhesive is cured to bond the quarter wave plate holder and the elcos panel assembly to the elcos panel assembly of the projection display. Screen registration method. The method of claim 7, wherein And the adhesive is injected when the elcos panel assembly is manufactured.

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