TWI468735B - Align mark of stereoscopic image display, aligning method and system using the align mark - Google Patents

Description

Alignment mark of stereoscopic image display, alignment method and system using the same

Embodiments of the present invention relate to an alignment mark for a stereoscopic image display device and an alignment method and system for a stereoscopic image display device using the alignment marks.

The stereoscopic image display device displays a 3D image using a stereoscopic technique or an autostereoscopic technique. This stereoscopic technique relies on parallax between the left and right eyes, and with or without special glasses to achieve a 3D effect. When special glasses are used, since the direct-injection type display device or the projector changes the polarization direction of the special glasses or displays the left and right images in a minute-sharing manner, the viewer views the 3D images through the polarized glasses or the shutter glasses. Optical components that are not glasses, for example, a parallax barrier or a lenticular lens are disposed in front of or behind the display screen to isolate the optical axes of the left and right images.

In a 3D image implementation employing polarized glasses, a polarization separation element, for example, a pattern retarder, must be attached to the display panel. The pattern retardation film makes the polarizations of the left eye image and the right eye image displayed on the display panel different from each other. When the polarized glasses are used to view the 3D image displayed on the stereoscopic image display device, the viewer perceives the left-eye image polarized light through the left-eye filter of the polarized glasses and transmits the right-eye filter of the polarized glasses. Feel the polarized light of the right eye image, and then feel the 3D effect.

However, without using the polarization separation element, the shutter glasses type stereoscopic image display device alternately displays the left eye image and the right eye image on the display panel, and synchronizes the left eye image with the right eye image, and the shutter The left and right shutters of the glasses are alternately opened. The viewer can see the left eye image through the left shutter and the right eye image through the right shutter to feel the 3D effect. The shutter glasses type stereoscopic image display device is limited by the high price due to expensive shutter glasses, although it does not require any polarization separation elements. From the viewpoint of 3D image quality, the shutter glasses type stereoscopic image display device is in a disadvantage, because the left eye image and the right eye image are subject to the time division of the preset time interval, compared to the polarized glasses type display device. The shutter glasses type stereoscopic image display device will increase the flicker and 3D crosstalk problems, and thus, the viewing fatigue will increase. The "flicker" means that the brightness of the image displayed on the display panel fluctuates within a fixed time interval. The “3D interference” means that the viewer perceives the left eye image and the right eye image displayed on the display panel with a single eye (left eye or right eye) at the same time, so that the user feels that the image partially overlaps.

In the shutter glasses type stereoscopic display device, each of the left shutter and the right shutter must be synchronized with the display panel to turn on/off the power. To this end, the shutter glasses contain a synchronization circuit for turning the left and right shutters on and off. The synchronizing circuit includes an infrared receiving circuit, a driving voltage switching circuit, or the like. Accordingly, the shutter glass type stereoscopic image display device requires expensive shutter glasses. The shutter glasses produce electromagnetic radiation.

Compared with the shutter glasses type stereoscopic image display device, the polarized glasses type stereoscopic image display device can enjoy low price by using low-cost polarized glasses, and only needs to be attached to the polarization separation element of the display panel. In the polarized glasses type stereoscopic image display device, the left eye image and the right eye image are simultaneously displayed on the display panel and are separated into each line so that the 3D image is perceived by the shutter glass type display device. It will be a lower degree of flicker and 3D interference, thus reducing the fatigue felt by the viewer.

The pattern retardation film can be classified into a glass pattern retardation film (GPRs) and a film pattern retardation film FPRs. In the eyeglass pattern retardation film GPRs, a pattern retardation film is formed on the glass substrate, and the film pattern is formed on the glass substrate. In the retardation film FPRs, a pattern retardation film is formed on the film substrate. The thin film pattern retardation film is advantageous in comparison with the glasses pattern retardation film because of its ability to reduce the thickness, weight, and price of the display panel. Therefore, the development of the thin film pattern retardation film is continuously carried out.

In the polarized glasses type stereoscopic image display device, the alignment accuracy between the pattern retardation film and the display panel has a considerable influence on the price, the productivity, and the 3D image quality. According to a conventional method of aligning a pattern retardation film and a display panel, as shown in FIG. 1, alignment marks AM1' to AM4' are formed on the display panel PNL, and alignment marks AM1 to AM4 are formed in the pattern phase. On the differential film PR, and the display panel PNL is attached to the pattern retardation film PR, while the display panel PNL and the pattern retardation film PR are aligned with each other, so that the marks AM1 to AM4 and the alignment mark AM1 are aligned along a vertical direction. 'To AM4' will meet.

A separate program is required to fabricate the pattern retardation film PR to form alignment marks AM1 to AM4 on the pattern retardation film PR.

When the substrate (or film) of the pattern retardation film PR is kept fixed, the alignment marks AM1 to AM4 must be formed, and the manufacturing process of the pattern retardation film PR cannot be continuously performed, and thus, the delay of the program time is caused.

In order to distinguish the polarization characteristics of the left-eye image from the right-eye image, the pattern is formed on the pattern phase difference film PR together with the alignment marks AM1 to AM4 with respect to the pixels of the display panel PNL. A misalignment may occur between the pattern phase difference film PR pattern and the alignment marks AM1 to AM4. In this case, even when the alignment marks AM1 to AM4 of the pattern phase difference film PR are aligned with the display panel PNL due to the alignment error between the alignment marks AM1 to AM4 and the pattern retardation film PR pattern The alignment marks AM1' to AM4' are precisely aligned, and an alignment error generated between the pattern of the pattern phase difference film PR and the pixels of the display panel PNL will end.

Embodiments of the present invention provide an alignment mark for a stereoscopic image display device that can reduce alignment errors between a pattern retardation film and a display panel, and provide an alignment method using the alignment marks and system.

According to an embodiment of the invention, an alignment mark includes a first alignment mark formed at a middle left portion of the display panel, and a second alignment mark formed at a middle right portion of the display panel.

Each of the first alignment mark and the second alignment mark includes one or more left patterns, and one or more right patterns disposed offset from the one or more left patterns.

The first alignment mark and the second alignment pattern are aligned with a reference line based on a polarization selection pattern of the pattern retardation film.

According to an embodiment of the present invention, an alignment method for a stereoscopic image display device includes: finding a reference line of a pattern retardation film, and the reference line and the upper end and the lower end formed on the pattern retardation film are redundant ( One of the dummy patterns is separated by a predetermined distance; the reference line of the pattern phase difference film is aligned with the first alignment mark and the second alignment mark of the display panel; and the reference of the pattern phase difference film The pattern retardation film is attached to the display panel when the line and the first alignment mark of the display panel and the second alignment mark are aligned within an allowable alignment error range.

According to an embodiment of the invention, an alignment system for a stereoscopic image display device includes: a first alignment stage for supporting a pattern retardation film, the pattern retardation film comprising excess formed at the upper end and the lower end a pattern, and a first polarization selection pattern and a second polarization selection pattern formed between the redundant patterns; a first image system for capturing any one of the redundant patterns of the pattern retardation film, And capturing a reference line between the first polarization selection pattern and the second polarization selection pattern in the center of the pattern retardation film; a second alignment stage for supporting formation on a display panel a first alignment mark in the middle left portion and a second alignment mark formed in the middle right portion of the display panel; a second image system for capturing the first alignment mark of the display panel and the An image of the second alignment mark; a drum for receiving the pattern retardation film from the first alignment stage, and the reference line of the pattern retardation film and the first of the display panel Alignment mark and the When the alignment mark is aligned within an allowable alignment error range, the pattern retardation film is attached to the display panel on the second alignment stage; and a control computer for analyzing the first image system And an image of the second image system, and controlling activation of at least one of the first alignment stage and the second alignment stage and activation of the drum, such that the reference line of the pattern retardation film is within the tolerance range The first quasi mark and the second alignment mark are aligned with the display panel.

Reference will now be made in detail to the particular embodiments embodiments In any event, similar reference numbers are used herein to represent the same or similar components. It is to be noted that a detailed description of the prior art will be omitted if it is determined that the description of the prior art may lead to misunderstanding of the present invention.

FIG. 2 is a schematic view schematically showing a stereoscopic image display device according to an embodiment.

Referring to FIG. 2, a stereoscopic image display device according to an embodiment includes a display panel PNL, a thin film pattern retardation film FPR, and polarized glasses PGLS.

The display panel PNL may be actually a display panel of a flat display device, and the flat display device may be, for example, a field emission display (FED), a plasma display panel PDP, an organic light emitting diode OLED, or an electrophoretic display EPD.

In a 2D mode, the display panel PNL displays 2D videovisual data on the pixel array. In a 3D mode, the display panel PNL separates each other's left eye image and right eye image on each line in the pixel array, and simultaneously displays the left eye image and the right eye image.

The thin film pattern retardation film FPR is attached to the display panel PNL. In the thin film pattern phase difference film FPR, the optical axis of the first polarization selection pattern PR1 is perpendicular to the optical axis of the second polarization selection pattern PR2. In the thin film pattern phase difference film FPR, the first polarization selection pattern PR1 and the second polarization selection pattern PR2 are alternately disposed. The first polarization selection pattern PR1 delays the light of the left-eye image (or the right-eye image) displayed on the odd-numbered lines of the display panel PNL, and transmits the light of the first polarized light. The second polarization selection pattern PR2 delays the light of the right eye image (or the left eye image) displayed on the even line of the display panel PNL, and transmits the light of the second polarized light. The first polarized light is circularly polarized light or linearly polarized light, and the second polarized light is circularly polarized light or linearly polarized light, and the optical axis of the second polarized light It is perpendicular to the optical axis of the first polarized light.

The polarized glasses PGLS include a left eye filter and a right eye filter. The left-eye filter has the same optical axis as the optical axis of the first polarization selection pattern PR1 of the thin film pattern phase difference film FPR. The right eye filter has the same optical axis as the optical axis of the second polarization selection pattern PR2 of the thin film pattern phase difference film FPR. Therefore, the viewer sees only the pixels displayed in the left-eye image through the left-eye filter of the polarized glasses PGLS, and the right-eye filter that passes through the polarized glasses PGLS sees only the pixels displayed in the right-eye image, resulting in A binocular parallax is generated, thus making the viewer feel the 3D effect.

FIG. 3 is a diagram illustrating a method of aligning a stereoscopic image display device in accordance with an embodiment.

According to the method illustrated in Fig. 3, the thin film pattern phase difference film FPR having no alignment mark will be aligned with the display panel PNL with the alignment marks AK1 to AK6. Multiple alignment marks can be referred to as align markings.

As shown in FIG. 4, the thin film pattern retardation film FPR includes a first polarization selection pattern PR1 and a second polarization selection pattern PR2 for separating polarized light of the left eye image from each other (also referred to as "left eye image pole". Light," and polarized light that separates the image of the right eye (also known as "right-lens image polarized light"). The first polarization selection pattern PR1 and the second polarization selection pattern PR2 face the pixel array of the display panel PNL. The pixel array of the display panel PNL includes a display area having pixels that display 2D or 3D images.

The first polarization selection pattern PR1 and the second polarization selection pattern PR2 have different optical axes from each other, delay the phase of the incident light by a predetermined phase value, and transmit the phase delayed light as polarized light, polarized light. The optical axes are perpendicular to each other, so that the left-eye image and the right-eye image are different in polarization characteristics. For example, the first polarization selection pattern PR1 has a first optical axis and faces an odd line of the pixel array of the display panel PNL to delay the phase of the linearly polarized light from the odd line by 1/4 wavelength and transmit The left eye (or right eye) light that is displayed on the odd line as the first polarized light. The second polarization selection pattern PR2 has a second optical axis perpendicular to the first optical axis and faces an even line of the pixel array of the display panel PNL to delay the phase of the linearly polarized light from the even line by 1/4 wavelength And transmits the right eye (or left eye) light that is displayed on the even line as the second polarized light.

According to an embodiment of the invention, when the number of lines in the pixel array of the display panel PNL is N (N is an even number), by adding both the first polarization selection pattern PR1 and the second polarization selection pattern PR2 The number of lines of the film pattern retardation film FPR may be N. According to an embodiment of the invention, the number of the first polarization selection pattern PR1 or the second polarization selection pattern PR2 is N/2.

According to another embodiment of the present invention, when the number of lines of the pixel array of the display panel PNL is N, by adding both the first polarization selection pattern PR1 and the second polarization selection pattern PR2 to the thin film pattern FPR The number of lines can be N+1. In this case, the number of the first polarization selection pattern PR1 and the second polarization selection pattern PR2 may be N/2 and the other is N/2+1. For example, the number of first polarization selection patterns PR1 is N/2 plus 1, and the number of second polarization selection patterns PR2 is N/2. Alternatively, the number of second polarization selection patterns PR2 is N/2 plus 1, and the number of first polarization selection patterns PR1 is N/2.

The thin film pattern retardation film FPR further includes an excess area on the upper surface and an excess area below. At least one of the upper unnecessary area and the lower excess area of the thin film pattern phase difference film FPR includes the excess patterns DUM1 and DUM2. When the thin film pattern phase difference film FPR is aligned with the display panel PNL, the excess patterns DUM1 and DUM2 serve as reference patterns for identifying the upper unnecessary area and the lower excess area of the thin film pattern phase difference film FPR2. The redundant patterns DUM1 and DUM2 face non-display areas other than the pixel array area of the display panel PNL. Thus, the redundant patterns DUM1 and DUM2 do not face the pixels in the pixel array.

The excess patterns DUM1 and DUM2 are formed on the upper unnecessary area and the lower excess area of the thin film pattern phase difference film FPR, respectively. Each of the redundant patterns DUM1 and DUM2 has the same width as the width of each of the first polarization selection pattern PR1 and the second polarization selection pattern PR2, or has a different polarization from the first polarization selection pattern PR1 and the second polarization. The width of the width of each of the patterns PR2 is selected so that the first polarization selection pattern PR1 and the second polarization selection pattern PR2 with respect to the pixel array region of the display panel can be easily distinguished.

Fig. 4 is a view showing an embodiment in which the widths of the excess patterns DUM1 and DUM2 are larger than the widths of the polarization selection patterns PR1 and PR2. However, the embodiments of the invention are not limited thereto. For example, each of the redundant patterns DUM1 and DUM2 may have one or more patterns, and each of the patterns has a width that is the same as the width of the first polarization selection pattern PR1 and the second polarization selection pattern PR2. According to an embodiment of the present invention, the excess patterns DUM1 and DUM2 respectively have widths A and A' greater than the width of each of the first polarization selection pattern PR1 and the second polarization selection pattern PR2 as shown in FIG. Alternatively, the excess patterns DUM1 and DUM2 respectively have widths A and A' smaller than the width of each of the first polarization selection pattern PR1 and the second polarization selection pattern PR2. The first unnecessary pattern DUM1 is formed on the upper unnecessary region of the thin film pattern phase difference film FPR, and has polarization characteristics identical to one of the first polarization selection pattern PR1 and the second polarization selection pattern PR2, and the second plurality The remaining pattern DUM2 is formed in the excess area below the thin film pattern phase difference film FPR, and has polarization characteristics identical to one of the first polarization selection pattern PR1 and the second polarization selection pattern PR2.

The excess patterns DUM1 and DUM2 are not formed by a manufacturing process separate from the manufacturing process for fabricating the polarization selection patterns PR1 and PR2. However, the excess patterns DUM1 and DUM2 are formed together with the polarization selection patterns PR1 and PR2 by a method similar to the method of manufacturing the polarization selection patterns PR1 and PR2. Therefore, according to the embodiments of the present invention, the degree of misalignment of the polarization selection patterns PR1 and PR2 can be easily recognized by inspecting the excess patterns DUM1 and DUM2 of the thin film pattern retardation film FPR.

In order to easily distinguish the upper unnecessary region and the lower redundant region of the thin film pattern phase difference film FPR, the polarization characteristics of the first redundant pattern DUM1 may be the same as or different from the polarization characteristics of the second redundant pattern DUM1. Therefore, an embodiment of the present invention recognizes the difference in polarization and/or width between the redundant patterns DUM1, DUM2 and the polarization selection patterns PR1, PR2 to identify the excess patterns DUM1, DUM2 and polarization selection. The difference between the patterns PR1 and PR2.

According to an embodiment of the present invention, in order to easily distinguish the upper unnecessary region and the lower redundant region of the thin film pattern retardation film FPR, the width A of the first redundant pattern DUM1 formed at the upper end of the pattern retardation film FPR may be set to be different from the formation. The width A' of the second redundant pattern DUM2 at the lower end of the pattern retardation film FPR. For example, the width A of the first redundant pattern DUM1 may be larger or smaller than the width A' of the second redundant pattern DUM2. Therefore, the excess patterns DUM1, DUM2 and the polarization selection patterns PR1, PR2 can be distinguished by confirming the difference in polarization and/or width between the excess patterns DUM1, DUM2 and the polarization selection patterns PR1, PR2. .

In the thin film pattern retardation film FPR, the distance between the excess pattern DUM1 or DUM2 and the reference line CTL is preset as a factor for designing the thin film pattern retardation film FPR. Therefore, by recognizing the positions of the redundant patterns DUM1 and DUM2, the position of the reference line CTL located at a predetermined distance from the excess patterns DUM1 and DUM2 can be known. When the thin film pattern retardation film FPR is aligned with the display panel PNL, the reference line CTL is the first polarization selection pattern PR1 and the second polarization selection pattern PR2 located in the center of the thin film pattern phase difference film FPR and is located on the display panel The boundary between the alignment marks AK2 and AK5 at the center of the PNL. The reference line CTL of the thin film pattern phase difference film FPR is not formed by another procedure separate from the manufacturing process of the polarization selection patterns PR1 and PR2, but is formed together with the polarization selection patterns PR1 and PR2.

When the thin film pattern phase difference film FPR is aligned with the display panel PNL, the reference line CTL of the thin film pattern phase difference film FPR is aligned with the alignment marks AK1 to AK6 of the display panel PNL. Therefore, it is not necessary to form the separation alignment mark in the thin film pattern retardation film FPR.

Referring to FIGS. 3 and 5, the display panel PNL includes a pixel array displaying 2D/3D images, and a bezel region of a peripheral portion outside the pixel array. The blackout area is a non-display area having no pixels and includes a black matrix BM (Black Matrixes). The shade area includes alignment marks AK1 to AK6 at six positions on the upper, central, and lower portions of the two opposite sides of the display panel. In accordance with an embodiment of the present invention, the upper and lower alignment marks (i.e., AK1, AK3, AK4, and AK6) may be omitted from the alignment marks AK1 to AK6.

The left alignment marks AK1 to AK3 formed in the left shading area of the display panel PNL, and the right alignment marks AK4 to AK6 formed in the right shading area of the display panel PNL are designed to have different pattern shapes such that the left side and the right side are available Intuitive and easy to identify. The alignment marks AK1 to AK6 include alignment patterns that are patterned simultaneously with the black matrix pattern in the pixel array, and as shown in FIGS. 6A to 7B, alignment patterns having different patterns can be formed. In an embodiment of the invention, a panel reference line CTL_PNL is indicated by a dashed line.

6A and 6B are enlarged plan views illustrating some alignment marks according to an embodiment, in which FIG. 6A shows the second alignment mark AK2, and FIG. 6B shows the fifth alignment mark AK5. Each of the left side alignment marks AK1 to AK3 has substantially the same pattern as the second alignment mark AK2. Each of the right side alignment marks AK4 to AK6 has substantially the same pattern as the fifth alignment mark AK5.

Referring to FIGS. 6A and 6B, the second alignment mark AK2 includes a left side alignment pattern 51 and a right side alignment pattern 52.

The left side alignment pattern 51 includes marks for indicating the distance from the panel reference line CTL_PNL across the central portion of the display panel PNL. The left alignment pattern 51 includes a 20 μm mark for indicating a position at a distance of 20 μm from the panel reference line CTL_PNL, and a 40 μm mark for indicating a distance of 40 μm from the panel reference line CTL_PNL. position. The panel reference line CTL_PNL is not formed in the alignment marks AK1 to AK6. The panel reference line CTL_PNL is pre-set by a control computer so as to be able to be drawn, and when the film pattern retardation film FPR is aligned with the display panel PNL, it can be captured by the image system on the monitor connected to the control computer. The images of the alignment marks are displayed together.

The right side alignment pattern 52 includes marks that are separated or offset from the mark of the left side alignment pattern 51 by a predetermined distance. The right alignment pattern 52 includes a 10 μm mark, a 30 μm mark, and a 50 μm mark for indicating a position of a distance of 10 μm from the panel reference line CTL_PNL for indicating a distance from the panel reference line CTL_PNL. A position of 30 μm is used to indicate a position at a distance of 50 μm from the panel reference line CTL_PNL.

The pattern of the fifth alignment mark AK5 is vertically symmetrical to the pattern of the second alignment mark AK2. The alignment mark AK5 includes a left side alignment pattern 54 and a right side alignment pattern 53.

The left side alignment pattern 54 contains a mark for indicating the distance from the panel reference line CTL_PNL. The left alignment pattern 54 includes a 10 μm mark, a 30 μm mark, and a 50 μm mark for indicating a position of a distance of 10 μm from the panel reference line CTL_PNL for indicating a distance from the panel reference line CTL_PNL. A position of 30 μm, which is used to indicate a position at a distance of 50 μm from the panel reference line CTL_PNL.

The right alignment pattern 53 includes marks that are separated or offset from the mark of the left alignment pattern 54 by a predetermined distance. The right alignment pattern 53 includes a 20 μm mark for indicating a position at a distance of 20 μm from the panel reference line CTL_PNL, and a 40 μm mark for indicating a position of 40 μm from the panel reference line CTL_PNL. .

As shown in FIGS. 6A and 6B, the marks of the alignment patterns 51, 52, 53, 54 adjacent to the respective marks AK1 to AK6 may indicate numbers and units for indicating the distance from the panel reference line CTL_PNL. As shown in FIGS. 6A and 6B, in the case where the alignment patterns 51, 52 or 53, 54 are provided at intervals of 10 μm, when the thin film pattern phase difference film FPR is aligned with the display panel PNL, the alignment error may be It is known to be every 10 μm. The marks of the alignment patterns 51, 52, 53, and 54 are not limited to those shown in FIGS. 6A and 6B. For example, the left alignment patterns 51, 54 and the right alignment patterns 52, 53 may be formed at intervals of 5 μm or as shown in FIGS. 7A and 7B at intervals of 30 μm. In other embodiments, other spaced distances may be implemented.

As shown in FIGS. 8A and 8B, when the reference line CTL of the thin film pattern phase difference film FPR and the panel reference line CTL_PNL meet, the display panel PNL is ideally aligned with the thin film pattern phase difference film FPR.

An alignment edge can be allowed, and for 3D images, the image quality can be guaranteed to be higher than the predetermined level. The alignment edge can be set within an allowable alignment error range AMR, so that the user does not feel an allowable range of lower than 3D image quality degradation of the preset level. Experimentally, the allowable alignment error range AMR contains an area of +30 μm or -30 μm from the ideal alignment. Therefore, when the alignment line CTL of the thin film pattern phase difference film FPR is aligned with the allowable alignment error range AMR, it can be determined that the alignment between the thin film pattern phase difference film FPR and the display panel PNL is good.

7A and 7B are expanded plan views illustrating some alignment marks according to an embodiment, wherein FIG. 7A shows the second alignment mark AK2, and FIG. 7B shows the fifth alignment mark AK5. Each of the left side alignment marks AK1 to Ak3 has a pattern substantially the same as the second alignment mark AK2. Each of the right side alignment marks AK4 to Ak6 has a pattern substantially the same as the fifth alignment mark AK5.

Referring to FIGS. 7A and 7B, the second alignment mark AK2 includes a left side alignment pattern 61 and a right side alignment pattern 62.

The left alignment pattern 61 includes a single pattern. The width (or thickness) of the left side alignment pattern 61 is the distance from the panel reference line CTL_PNL to the uppermost end of the allowable alignment error range AMR. For example, the width of the left side alignment pattern 61 is 30 μm from the panel reference line CTL_PNL.

The right alignment pattern 62 includes a single pattern whose horizontal axis is offset from the horizontal axis of the left alignment pattern 61. The width (or thickness) of the right side alignment pattern 62 is the distance from the panel reference line CTL_PNL to the lowermost end of the allowable alignment error range AMR. For example, the width of the right side alignment pattern 62 is 30 μm from the panel reference line CTL_PNL.

The pattern of the fifth alignment pattern AK5 is vertically symmetrical to the pattern of the second alignment mark Ak2. The fifth alignment pattern AK5 includes a left side alignment pattern 64 and a right side alignment pattern 63.

The left alignment pattern 64 includes a single pattern. The width (or thickness) of the left side alignment pattern 64 is the distance from the panel reference line CTL_PNL to the lowermost end of the allowable alignment error range AMR. For example, the width of the left side alignment pattern 64 is 30 μm from the panel reference line CTL_PNL.

The right side alignment pattern 63 includes a single pattern whose horizontal axis is offset from the horizontal axis of the left side alignment pattern 64. The width (or thickness) of the right alignment pattern 63 is the distance from the panel reference line CTL_PNL to the uppermost end of the allowable alignment error range AMR. For example, the width of the right side alignment pattern 63 is 30 μm from the panel reference line CTL_PNL.

As shown in FIGS. 10A and 10B, when the panel reference line CTL_PNL meets the reference line CTL of the thin film pattern phase difference film FPR, the display panel PNL is ideally aligned with the thin film pattern phase difference film FPR. As shown in FIGS. 7A and 7B, when each of the left side alignment patterns 61, 64 and the right side alignment patterns 62, 63 is formed as a single pattern, the left alignment marks AK1 to AK3, and the right side are aligned. Each of the alignment marks AK4 to AK6 can be intuitively and easily determined whether or not an alignment error is between the thin film pattern phase difference film FPR and the display panel PNL. For example, when the reference line CTL of the thin film pattern phase difference film FPR is from the left side alignment pattern 61 of any one of the second alignment marks Ak2, the left side alignment pattern 64 of the fifth alignment mark AK5, and the second alignment mark Ak2 When the right alignment pattern 62 and the right alignment pattern 63 of the fifth alignment mark AK5 are deviated, it can be determined that the thin film pattern retardation film FPR is not well aligned with the display panel PNL. On the contrary, when the reference line CTL of the thin film pattern phase difference film FPR is not from the left side alignment pattern 61 of the second alignment mark Ak2, the left side alignment pattern 64 of the fifth alignment mark AK5, and the second alignment mark Ak2 When the right alignment pattern 62 and the right alignment pattern 63 of the fifth alignment mark AK5 are deviated, it can be determined that the thin film pattern retardation film FPR is well aligned with the display panel PNL.

According to an embodiment of the present invention, the position of one of the redundant patterns DUM1 and DUM2 is determined, and the position of the reference line CTL of the thin film pattern phase difference film FPR depends on the distance from the redundant patterns DUM1, DUM2, which is The distance between the redundant patterns DUM1, DUM2 and the reference line CTL of the thin film pattern phase difference film FPR. According to an embodiment of the present invention, the reference line CTL of the thin film pattern phase difference film FPR is aligned with the second alignment pattern AK2 and the fifth alignment pattern AK5 formed on the opposite sides of the central portion of the display panel PNL. Thereby, the thin film pattern retardation film FPR is aligned with the display panel PNL.

According to an embodiment of the present invention, the excess patterns DUM1 and DUM2 of the thin film pattern phase difference film FPR are used as reference patterns required for evaluating the reference line of the thin film pattern phase difference film FPR. Therefore, it is not necessary to correctly align the alignment marks AK1, AK3, AK4, and AK6 positioned at the uppermost and lowermost peripheral portions of the display panel PNL with the excess patterns DUM1, DUM2 of the thin film pattern phase difference film FPR. According to an embodiment of the present invention, when the reference line CTL and/or the display panel PNL of the thin film pattern phase difference film FPR are disposed, the reference line CTL of the thin film pattern phase difference film FPR is positioned at the second alignment mark AK2 and the fifth The center of the mark AK5 is aligned, and the film pattern retardation film FPR is aligned with the display panel PNL and connected to each other.

When the thin film pattern retardation film FPR and the display panel PNL are connected to each other, and the thin film retardation film FPR is in good alignment with the display panel PNL, the first redundant pattern DUM1 formed at the upper end of the thin film retardation film FPR is formed. The first alignment mark Ak1 and the fourth alignment mark AK4 on the opposite sides of the upper end of the display panel PNL. The second redundant pattern DUM2 formed at the lower end of the thin film pattern phase difference film FPR is opposed to the third alignment mark AK3 and the sixth alignment mark AK6 formed on the opposite sides of the lower end of the display panel PNL.

Figs. 8A and 8B are plan views for explaining a case where the thin film pattern phase difference film FPR and the display panel PNL are ideally aligned with each other by the alignment marks AK2 and AK5 as shown in Figs. 6A and 6B. FIGS. 9A and 9B are plan views for explaining a case where the thin film pattern phase difference film FPR and the display panel PNL are misaligned with each other by the alignment marks AK2 and AK5 as shown in FIGS. 6A and 6B.

Referring to FIGS. 8A and 8B, each of the alignment marks AK1 to AK6 is formed in a region of the display panel PNL which does not have a black matrix. According to an embodiment of the present invention, based on the difference in distance between the reference line CTL of the thin film pattern retardation film FPR and the mark formed on the display panel PNL, the thin film pattern retardation film FPR and the display panel can be intuitively and accurately obtained. The degree of misalignment between PNLs. This "mark formed on the display panel PNL" can be regarded as a mark formed on the alignment marks AK2 and AK5.

When the thin film pattern retardation film FPR is aligned with the display panel PNL. If the reference line CTL of the thin film pattern phase difference film FPR is within an allowable alignment error range AMR from the opposite side of each of the display panels PNL, it can be confirmed that the alignment is good. As shown in FIGS. 9A and 9B, when the reference line CTL of the thin film pattern phase difference film FPR is shifted from the allowable alignment error range AMR from the opposite side of either display panel PNL, it can be determined that the alignment is The situation is not good.

10A and 10B are plan views for explaining the ideal alignment of the thin film pattern retardation film FPR and the display panel PNL by the alignment marks AK2 and AK5 as shown in Figs. 7A and 7B. 11A and 11B are plan views for explaining misalignment of the thin film pattern phase difference film FPR and the display panel PNL by the alignment marks AK2 and AK5 as shown in Figs. 7A and 7B.

Referring to FIGS. 10A and 10B, each of the alignment marks AK1 to AK6 is formed in a region of the display panel PNL which does not have any black matrix. According to an embodiment of the present invention, based on the difference in the distance between the reference line CTL of the thin film pattern retardation film FPR and the mark formed on the display panel PNL, the film pattern retardation film FPR and the display panel can be intuitively and accurately known. The degree of misalignment between PNLs.

As shown in FIGS. 10A and 10B, when the thin film pattern phase difference film FPR is aligned with the display panel PNL, if the reference line CTL of the thin film pattern phase difference film FPR overlaps with the left side alignment patterns 61, 64 of the display panel PNL, While the reference line CTL overlaps with the right side alignment patterns 62, 63 of the display panel PNL, the alignment error is within the allowable alignment error range AMR, and the alignment can thus be determined to be good. When the thin film pattern phase difference film FPR is aligned with the display panel PNL, the alignment marks CTL of the thin film pattern phase difference film FPR and the alignment marks AK1 to AK6 of the display panel PNL are displayed on the monitor of the control computer via the image system. As shown in FIGS. 10A and 10B, when the reference line CTL of the thin film pattern phase difference film FPR overlaps with the left side alignment patterns 61, 64 of the display panel PNL, and the reference line CTL and the right side alignment pattern 62 of the display panel PNL are as shown. When 63 is overlapped, the reference line CTL of the thin film pattern phase difference film FPR is not seen in the patterns 61 to 64 of the alignment marks AK2 and AK5.

As shown in FIGS. 11A and 11B, when the reference line CTL of the thin film pattern phase difference film FPR is neither overlapped with the left side alignment patterns 61, 64 nor overlapped with the right side alignment patterns 62, 63, alignment can be determined. The situation is not good.

12A and 12B are schematic views illustrating an alignment system of a stereoscopic image display device according to an embodiment. Referring to FIGS. 12A through 14, an alignment system according to an embodiment includes a first alignment stage ST1, first image systems VR1 to VR4, a second alignment stage ST2, second image systems VP1 to VP4, and a drum DR. And control the computer CTRL.

The first alignment stage ST1 sucks up and grasps the thin film pattern retardation film FPR. The first alignment stage ST1 is connected to an xy robot. As shown in Fig. 13, the xy automatic machine moves the first alignment stage ST1 in the X-axis and Y-axis directions under the control of the control computer CTRL. Under the control of the control computer CTRL, the first alignment stage ST1 is rotatable in the θ-axis direction. Therefore, as shown in FIG. 13, under the control of the control computer CTRL, the first alignment stage ST1 can finally adjust the film pattern retardation film FPR in the X-axis, Y-axis, and θ-axis directions to control the film pattern phase difference. Alignment of the film FPR.

As shown in FIG. 13, the first image systems VR1 to VR4 include the first image module VR1 to the fourth image module VR4. The first image module VR1 and the second image module VR2 capture the image of the second redundant pattern DUM2 of the thin film pattern retardation film FPR or the opposite side of the first redundant pattern DUM1, and transmit the captured image to the control. Computer CTRL. The third image module VR3 and the fourth image module VR4 capture images on opposite sides of the reference line CTL located at the center of the thin film pattern retardation film FPR, and capture the first polarization selection pattern PR1 adjacent to the reference line CTL. The second polarization selects images on opposite sides of the pattern PR2 and transmits the captured images to the control computer CTRL. Therefore, the first image systems VR1 to VR4 capture the four edges of the thin film pattern phase difference film FPR fixed on the first alignment stage ST1, and transfer the captured images to the control computer CTRL.

The second alignment stage ST2 sucks up and grasps the display panel PNL. The second alignment stage ST2 is connected to an xy automatic machine. As shown in Fig. 14, the xy automatic machine moves the second alignment stage ST2 in the X-axis and Y-axis directions under the control of the control computer CTRL. Under the control of the control computer CTRL, the second alignment stage ST2 is rotatable in the θ-axis direction. Therefore, as shown in FIG. 14, under the control of the control computer CTRL, the second alignment stage ST2 can finally adjust the display panel PNL in the X-axis, Y-axis, and θ-axis directions to control the alignment of the display panel PNL. .

As shown in FIG. 14, the second image systems VP1 to VP4 include the first image module VP1 to the fourth image module VP4. The first image module VP1 and the second image module VP2 capture images of the alignment marks AK1 and AK4 formed on opposite sides of the upper end of the display panel PNL, or are aligned on opposite sides of the lower end of the display panel PNL. Mark the images of AK3 and AK6 and transfer the captured images to the control computer CTRL. The third image module VP3 and the fourth image module VP4 capture images of the alignment marks AK2 and AK5 formed on opposite sides of the center of the display panel PNL, and transmit the captured images to the control computer CTRL. Therefore, the second image systems VP1 and VP4 transmit the images of the four alignment marks formed on the display panel PNL to the control computer CTRL via the second alignment stage ST2.

A drum DR is provided between the first alignment stage ST1 and the second alignment stage ST2. The drum DR is rotated by an electric motor under the control of the control computer, and is moved by a linear guide means in the up and down (z-axis direction) direction. After the thin film pattern phase difference film FPR located on the first alignment stage ST1 is well aligned with the display panel PNL located on the second alignment stage ST2, under the control of the control computer CTL, the drum DR receives from the first pair The thin film pattern retardation film FPR of the alignment ST1 is attached to the display panel sealed on the second alignment stage ST2 with the thin film pattern retardation film FPR. The drum DR contains an adhesive layer or an adhesive film having a small amount of adhesiveness, so that the film pattern retardation film FPR is firmly attached to the drum DR.

The control computer CTRL controls the operation of all the components of the alignment system in accordance with a preset program, and controls the entire process of alignment between the display panel PNL and the film pattern retardation film FPR. The distance between the redundant patterns DUM1, DUM2 and the reference line CTL of the thin film pattern phase difference film FPR can be pre-stored in the control computer CTRL.

Based on the images of the first image module VR1 and the second image module VR2 received from the first image systems VR1 to VR4, the control computer CTRL recognizes the excess patterns DUM1 and DUM2. The control computer CTRL calculates the position of the reference line CTL of the thin film pattern phase difference film FPR from the positions of the redundant patterns DUM1 and DUM2, and activates the first alignment stage ST1 based on the calculation result, thereby moving the reference line CTL of the thin film pattern phase difference film FPR To the desired location.

Accordingly, the control computer CTRL will compare the images obtained by the first image systems VR1 to VR4 and the second image systems VP1 to VP4. By comparing the received images, the control computer CTRL determines an alignment error between the thin film pattern phase difference film FPR and the display panel PNL. When the alignment error exceeds the allowable alignment error range AMR, the control computer CTRL activates the first alignment stage ST1 and the second alignment stage ST2 or xy automatic machine for adjusting the thin film pattern retardation film FPR and/or the display panel PNL Until the alignment marks AK2 of the display panel PNL and the panel reference line CTL_PNL of the AK5 and the reference line CTL of the thin film pattern phase difference film FPR are within the allowable alignment error range AMR.

A virtual center line showing the second alignment mark AK2 and the fifth alignment mark AK5 of the panel reference line CTL_PNL obtained by the first image system and the reference line CTL of the thin film pattern phase difference film FPR is displayed on the control computer CTRL On the monitor.

The control computer CTRL can control the second alignment stage ST2 to adjust the position of the display panel PNL so that the virtual center line and the panel reference line CTL_PNL can be combined. Furthermore, the control computer CTRL can adjust the position of the thin film pattern retardation film FPR until the virtual center line that meets the panel reference line CTL_PNL, and the reference line CTL of the thin film pattern phase difference film FPR are within the allowable alignment error range AMR.

As shown in FIG. 8A, FIG. 8B, FIG. 10A and FIG. 10B, when the thin film pattern phase difference film FPR and the display panel PNL are ideally adjusted to each other, or the alignment error is within the allowable alignment error range AMR, the activation is started. The drum DR moves the thin film pattern retardation film FPR toward the display panel PNL, so that the thin film pattern retardation film FP is connected to the R display panel PNL.

According to an embodiment of the invention, the alignment system further includes a peel-off device that removes the release film of the thin film pattern retardation film FPR to expose the thin film pattern retardation film FPR Adhesive layer. When the thin film pattern retardation film FPR is aligned with the display panel PNL, the alignment system can adjust between the thin film pattern retardation film FPR and the display panel PNL by controlling the position of the thin film pattern retardation film FPR based on the display panel PNL. Align the situation. Therefore, the y-axis and θ-axis calibration functions for the second calibration positioning stage ST2 can be omitted, and the drum DR can be implemented to move only in the up-and-down direction (z-axis direction).

A method of aligning the display panel PNL with the thin film pattern retardation film FPR will be described successively below.

As shown in FIG. 12A, after the thin film pattern retardation film FPR is fixed on the first alignment stage ST1, the control computer CTRL recognizes the alignment of the thin film pattern phase difference film FPR through the first image systems VR1 to VR4. The control computer CTRL parses one of the images for the redundant patterns DUM1 and DUM2 captured by the first image systems VR1 to VR4 to determine the positions of the redundant patterns DUM1 and DUM2.

The control computer CTRL activates the first alignment stage ST1 to adjust the position of the film pattern retardation film FPR, so that the reference line CTL of the film pattern retardation film FPR can be passed through the third image module VR3 and the fourth image module VR4. Seen on the obtained image. The control computer CTRL compares and analyzes the images obtained by the third and fourth image modules VR3 and VR4 of the first image system, and the images obtained by the third and fourth image modules VP3 and VP4 of the second image system. The image is used to activate the xy automatic machine or the first alignment stage ST1 such that the reference line CTL of the thin film pattern phase difference film FPR and the panel reference line CTL_PNL are within the allowable alignment error range AMR. When the reference line CTL of the thin film pattern phase difference film FPR and the panel reference line CTL_PNL meet, or the alignment error is within the allowable alignment error range AMR, the control computer CTRL determines that the alignment is good, and starts the drum DR to execute Attachment operation.

After the film pattern phase difference film FPR is aligned on the first alignment stage ST1, the control computer CTRL moves the first alignment stage ST1 in the x-axis direction, or moves the drum DR. As shown in FIGS. 12B and 12C, the control computer CTRL contacts a surface of the drum DR with the film pattern retardation film FPR, and then rotates the drum DR counterclockwise, thereby transferring the film pattern retardation film FPR to the drum. DR. Next, the control computer CTRL peels off the release film of the thin film pattern retardation film FPR attached or adhered to the drum DR to expose the adhesive of the thin film pattern retardation film FPR. The release film is manually or automatically peeled off by an automatic removal device.

The control computer CTRL starts the second alignment station ST2 based on the images obtained by the third image module VP3 and the fourth image module VP4 of the second image systems VP1 to VP4 of the alignment marks AK2 and AK5 of the display panel PNL. Therefore, the alignment of the display panel PNL can be adjusted. When the film pattern phase difference film FPR and the display panel PNL are adjusted, only the position of the film pattern phase difference film FPR can be adjusted based on the display panel PNL, and the procedure of adjusting the position of the display panel PNL can be omitted.

The control computer CTRL compares and analyzes images received from the first image systems VR1 to VR4 and the second image systems VP1 to VP4, and when between the reference line CTL of the thin film pattern phase difference film FPR and the panel reference line CTL_PNL The distance within the allowable alignment error range AMR, the control computer CTRL moves the drum DR toward the second alignment system ST2. As shown in FIG. 12D, when the adhesive of the thin film pattern retardation film FPR surrounding the drum DR is brought into contact with the surface of the display panel PNL and the drum DR is rotated counterclockwise, the control computer CTRL applies the film pattern retardation film. The FPR is attached to the display panel PNL.

Since the thin film pattern retardation film FPR does not contain separate alignment marks, the thin film pattern retardation film FPR can be manufactured by a continuous production process.

In the above-described embodiment of the present invention, although the rotary drum DR is used as a tool for moving the thin film pattern phase difference film FPR or conversion toward the display panel PNL, the thin film pattern retardation film FPR can be bonded to the display panel PNL. Other devices or means may be utilized in other embodiments of the invention.

Fig. 15 is a cross-sectional view showing the cross-sectional structure of the thin film pattern retardation film FPR. Fig. 16 is a schematic view showing the continuous production process of the film pattern retardation film FPR. Fig. 17 is a schematic view showing the exposure process as shown in Fig. 16 in detail.

As shown in Fig. 15, the film pattern retardation film FPR includes a film substrate 73, a protective film 71, a pattern layer 74, an adhesive 75, and a release film 76. The surface treatment layer 72 is formed between the protective layer 71 and the film substrate 73.

The surface treatment layer 72 is formed on the film substrate 73, and the protective layer 71 covers the surface treatment layer 72. The pattern layer 74 is formed under the film layer 73, and the adhesive 75 is applied to the pattern layer 74. The adhesive 75 then covers the release film 76.

The film substrate 73 acts as a substrate on which the pattern layer 74 is formed, and is selected as a Triacetyl Cellulose film, a Cyclo Olefin Co-Polymer film, or an acrylic-based film. film. The pattern layer 74 includes polarization selection patterns PR1, PR2 and redundant patterns DUM1, DUM2 for making the polarization between the left eye image and the right eye image different, as shown in FIG. The pattern of pattern layer 74 includes a liquid crystal layer that is governed by optical alignment. The protective film 71 is formed of a polyethylene terephthalate (PET) or a polymer resin having similar properties to ethylene terephthalate PET. The manufacturing process of the film substrate 73 is shown in Figs. 16 and 17.

An embodiment of the present invention includes applying an alignment film 77 to the film substrate 73 while moving the surface treatment film 73, as shown in Figs. 16 and 17, and drying the alignment film 77.

According to an embodiment of the present invention, the front surface of the alignment film 77 coated on the film substrate 73 is exposed to 45-degree (45°) polarized ultraviolet rays while the film substrate 73 is moved in one direction by a predetermined speed. The alignment film 77 having the front surface of the ultraviolet ray is then exposed to ultraviolet light by a polarizing ultraviolet light of -45 degrees (-45°) through the reticle 78. Subsequently, according to an embodiment of the present invention, when the film substrate 73 is moved in a direction by a predetermined speed, a liquid crystal layer containing a light curing agent is formed in a pattern 45a and -45 having a 45 degree alignment. The alignment is aligned on the alignment film 77 of the pattern 77b, followed by ultraviolet irradiation of the liquid crystal layer to cure and dry the liquid crystal layer. The pattern layer 74 is formed on the film substrate 73 subjected to the exposure and liquid crystal coating process, and the pattern layer 74 includes the first polarization selection pattern PR1 of the liquid crystal layer having an alignment angle of -45 degrees and has a 45-degree alignment The second polarization selection pattern PR2 of the liquid crystal layer of the angle.

Then, in accordance with an embodiment of the present invention, as the film substrate 73 is moved in one direction by a predetermined speed, an adhesive 75 is applied on the pattern layer 74, and then the release film 76 is formed on the adhesive 75. And a protective layer 71 is formed on the film substrate 73.

As shown in FIGS. 16 and 17, the process of manufacturing the thin film pattern retardation film FPR does not include the alignment mark on the thin film pattern retardation film FPR, and therefore, when the film substrate 73 is moved without stopping the film substrate 73, Different layers as shown in Fig. 15 can be continuously formed on the film substrate 73.

As described above, according to an embodiment of the present invention, the pattern phase difference film and the display panel are aligned with each other by using a polarization selection pattern for separating polarization characteristics of the left eye image and the right eye image in the pattern phase difference film, so that The pattern retardation film and the display panel are properly aligned and bonded to each other without forming separate alignment marks on the pattern retardation film. In addition, according to the embodiments, since the alignment marks are not required to be formed in the process of manufacturing the pattern retardation film, for the pattern retardation film, the process can be easily performed, and the pattern phase is manufactured. In terms of poor film, it can save costs. Moreover, in accordance with the embodiments, the alignment marks formed in the display panel mark the allowable alignment error range so that it can be intuitively recognized, resulting in a pair between the pattern retardation film and the display panel. The quasi-error can be calculated intuitively and correctly.

According to the forward model shown in Fig. 18 and the reverse mode shown in Fig. 19, a stereoscopic image display device can apply different assembly methods. In the front mode, the display panel is assembled to a main system in a frontal state without being flipped between the upper and lower sides. Conversely, in the flip mode, the display panel is assembled in a reverse mode to a main system in which the upper side and the lower side are flipped over each other.

In the front mode, the first polarization selection pattern PR1 of the thin film pattern phase difference film FPR transmits the left eye image displayed on the odd display line of the display panel PNL as the first polarized light, and transmits the even display on the display panel PNL. The right eye image on the line acts as the second polarized light. According to an embodiment of the present invention, in the front mode, the left-eye filter of the polarized glasses PGLS passes the first polarized left-eye image light incident through the first polarization selection pattern PR1, and the right of the polarized glasses PGLS The eye filter passes through the second polarized right eye image light incident through the first polarization selection pattern PR1. In the same manner as the front mode, in the flip mode, the thin film pattern retardation film FPR can be bonded to the display panel.

According to an embodiment of the present invention, in the flip mode, the right eye image data is displayed on the odd display line of the display panel PNL, and the right eye image light is transmitted through the first polarization selection pattern PR1 of the thin film pattern phase difference film FPR. As the first polarized light. In the flip mode, the left eye image data is displayed on the even display line of the display panel PNL, and the left eye image light is transmitted through the second polarization selection pattern PR2 of the thin film pattern phase difference film FPR as the second polarized light. Therefore, as in the same manner as the front mode, since the thin film pattern phase difference film FPR is attached to the display panel PNL in the flip mode, and the same material as the front mode is input to the display panel PNL, the viewer passes through the polarized glasses PGLS. The left eye filter sees the right eye image and the left eye image is seen through the right eye filter of the polarized glasses PGLS. Therefore, the viewer perceives a pseudoscopic image rather than viewing a normal 3D image. In the flip mode, the main system can transmit the opposite left eye image and the right eye image to the display panel PNL driving circuit to match the left eye image and the right eye image and the film pattern retardation film FPR displayed on the display panel PNL. The polarization characteristics of the pattern. In this case, circuits and software for flipping and aligning the left eye image with the right eye image can be added to the host system. According to an embodiment of the present invention, the thin mode retardation film FPR is shifted (or shifted downward) on the line by the flip mode thin film retardation film FPR of the front mode thin film retardation film FPR, by bonding the thin mode retardation film FPR And the display panel, a normal 3D image can be implemented without changing the arrangement of the left eye/right eye image data input to the driving circuit of the display panel PNL.

Figure 18 is a diagram showing the combination of front view stereoscopic image display devices according to an embodiment of the present invention. Fig. 19 is a view showing the combination of the flip mode stereoscopic image display devices according to an embodiment.

Referring to FIGS. 18 and 19, a stereoscopic image display device includes a display panel PNL, a display panel driving circuit, a source printed circuit board SPCB, a control printed circuit board PCB, and a main system according to an embodiment of the present invention. Motherboard SYS. The display panel driving circuit includes a data driving circuit and a gate driving circuit.

As described above, the display panel PNL can be implemented as a flat panel display, and can include a reference line CTL pair with the thin film pattern phase difference film FPR as shown in FIGS. 6A, 7B, 22, and 23. Quasi-alignment mark. As shown in FIGS. 22 and 23, the alignment marks include alignment marks AK2(F), AK5(F) corresponding to the front mode, and alignment marks AK2(R), AK5 corresponding to the flip mode ( R). The data drive circuit includes a plurality of source drive ICs (SICs). Under the control of the timing controller, the source driver IC (SIC) latches the digital video data input from the timing controller formed on the control printed circuit board PCB. The source driver IC (SIC) converts the digital video data into an analog positive/negative gamma reference voltage to generate a positive/negative data voltage. The positive/negative data voltage output from the source driver IC (SIC) is supplied to the data line of the display panel. The source driver IC (SIC) is connected to the data line of the display panel PNL by a Chip On Galss (COG) program or a Tape Automated Bonding (TAB) program.

The gate drive circuit includes a plurality of gate drive ICs (GICs). Under the control of the timing controller, the gate drive ICs (GIC) successively provide gate pulses to the gate lines. The gate drive ICs are connected to the gate line of the display panel PNL by a tape die bonding TAB program. The shift register of the gate driving ICs is directly formed on the substrate of the display panel PNL by a panel gate GIP (Gate In Panel) program.

The control computer CTRL includes a timing controller and a module power supply circuit.

The timing controller reprocesses the digital video data input by the motherboard SYS of the autonomous system, and supplies the reprocessed data to the source driver ICs. Based on the timing signals input from the motherboard SYS, for example, the vertical sync signal Vsync, the horizontal sync signal Vsync, the data enable signal DE, and the dot clock CLK, the timing controller generates timing control signals for controlling the source drive ICs. Operating time with gate control ICs.

The module power supply circuit includes a DC-DC converter and a regulator. The module power supply circuit increases the DC input voltage to generate an analog drive voltage for driving the pixel array of the display panel PNL.

The motherboard SYS of the main system is connected to a video source such as, for example, a set-top box, a television system, a telephone system, a DVD player, a Blu-ray player, a personal computer, a home theater, and the like. The motherboard SYS includes a pattern processing circuit, for example, a converter that interpolates the RGB video data input from the video source, so that the resolution of the RGB video data conforms to the resolution of the display panel PNL, and a main power circuit generates The DC input voltage to be supplied to the module power circuit. The motherboard SYS converts the input image data and the timing signals Vsync, Hsync, DE, CLK through an interface, for example, a Low Voltage Differential Signaling (LVDS) interface or a Minimized Differential Signaling (TMDS) interface. To the timing controller that controls the computer CTRL.

The motherboard SYS can switch between 2D mode operation and 3D mode operation in response to user data input through a user input device. The user input device includes a small keyboard, a keyboard, a mouse, an on-screen display (OSD), a remote control, and a touch screen. Through the user input device, the viewer can select 2D mode or 3D mode, and can select 2D-3D image conversion in 3D mode.

The motherboard SYS can convert 2D and 3D mode operations to each other via a 2D/3D identification code encoded into the input image data. The motherboard SYS converts a mode signal for changing the operation mode to 2D or 3D mode to the timing controller.

The motherboard SYS is connected to the control computer CTRL via a first flexible cable C1 and a connector, which may be, for example, a flexible flat cable. The control computer CTRL is connected to the source printed circuit board SPCB via a second flexible cable C2 and a connector, which may be, for example, a flexible flat cable.

In the front mode as shown in Fig. 18, the source drive ICs (SIC), the source printed circuit board SPCB, and the control computer CTRL are disposed above the display panel, and the motherboard SYS is disposed below the display panel PNL. Therefore, since the distance between the control computer CTRL and the motherboard SYS is large in the front mode, the length of the first flexible cable C1 will increase.

In the flip mode shown in Fig. 19, the source driver ICs (SIC), the source printed circuit board SPCB, and the control computer CTRL are disposed below the display panel. The motherboard SYS is placed below the display panel PNL. Therefore, since the distance between the control computer CTRL and the motherboard SYS is small, the length of the first flexible cable C1 is shorter than that shown in FIG.

The embodiments related to the description of FIGS. 12A to 12D can be applied to the alignment method and system for aligning and bonding the display panel PNL and the thin film pattern phase difference film FPR as shown in FIGS. 18 and 19.

Fig. 20 is a plan view showing in detail a film pattern retardation film according to an embodiment. Fig. 21 is a plan view showing in detail the ideal alignment between the thin film pattern retardation film and the display panel in the front mode and the flip mode.

Referring to FIGS. 20 and 21, the number of lines of the pixel array of the panel PNL is shown as N (N is an even number). Conversely, the number of lines of the thin film pattern phase difference film FPR is N+1. The thin film pattern retardation film includes polarization selection patterns P1 to PN+1 respectively formed in the N+1 line.

In the front mode, when the thin film pattern phase difference film FPR and the display panel PNL are aligned with each other, in the thin film pattern phase difference film FPR, the N polarization selection pattern of the first polarization selection pattern P1 formed on the first line is The Nth polarization selection pattern PN formed on the Nth line is in a one-to-one correspondence with respect to the N line of the display panel PNL. In other words, the N polarization selection patterns of the thin film pattern phase difference film FPR correspond to the N lines of the display panel PNL, respectively. In the front mode, the first line of the display panel PNL is relative to the first line of the thin film pattern phase difference film FPR. In the front mode, the Nth line of the display panel PNL is relative to the Nth line of the thin film pattern phase difference film FPR.

In the flip mode, when the thin film pattern phase difference film FPR and the display panel PNL are aligned with each other, in the thin film pattern phase difference film FPR, the N polarization selection pattern P2 of the second polarization selection pattern P2 formed on the second line The N+1 polarization selection pattern PN+1 formed on the (N+1)th line is in a one-to-one correspondence with respect to the N line of the display panel PNL. In other words, the N polarization selection patterns of the thin film pattern phase difference film FPR correspond to the N lines of the display panel PNL, respectively. In the flip mode, the first line of the display panel PNL is opposite to the (N+1)th line of the thin film pattern phase difference film FPR. In the flip mode, the Nth line of the display panel PNL is relative to the second line of the thin film pattern phase difference film FPR.

The first polarization selection pattern of the thin film pattern phase difference film FPR of the first polarized light that transmits the left eye (or the right eye) is the polarization selection pattern P1, P3, ..., PN/2+1, ... , PN-1, and PN+1, which are arranged in the odd-numbered lines of the thin film pattern phase difference film FPR in FIG. The second polarization selection pattern of the thin film pattern phase difference film FPR of the second polarized light that transmits the right eye (or the left eye) is the polarization selection patterns P2, P4, ..., PN/2, ..., and PN, which is an even line of the film pattern retardation film FPR disposed in Fig. 20. Therefore, as shown in Fig. 20, the first polarization selection patterns P1, P3, ..., PN/2+1, ..., PN-1, and PN+1 in the thin film pattern phase difference film FPR The number of the second polarization selection patterns P2, P4, ..., PN/2, ..., and PN is N/2. The optical axes of the first polarization selection patterns P1, P3, ..., PN/2+1, ..., PN-1, and PN+1 are N/2+1, perpendicular to the number N/2 The polarization select patterns P2, P4, ..., PN/2, ..., and the optical axis of the PN.

As shown in Fig. 20, in the front mode of the display panel PNL, the first line L1 of the pixel array is located at the upper end, and the Nth line is located at the lower end. The front mode of the display panel PNL displays the left eye image on the odd line and the right eye image on the even line in the 3D mode. With respect to the front mode of the display panel PNL, in the flip mode of the display panel PNL, the first line L1 of the pixel array is located at the lower end, and the Nth line is located at the upper end. Compared to the front mode of the display panel PNL, the flip mode of the display panel PNL has upper and lower sides that change from each other, and thus, in the 3D mode, the right eye image is displayed on the odd line, and the left eye image is displayed on the even line.

In the front mode thin film pattern phase difference film FPR, the first polarization selection patterns P1, P3, ..., PN/2+1, ..., PN-1, and PN+1, except for the first polarization In addition to the N+1th line of the pattern PN+1, the odd lines L1, L3, ..., LN/2+1, ..., LN-1 with respect to the display panel PNL are displayed on the display panel PNL. The odd-numbered lines L1, L3, ..., LN/2+1, ..., and the left-eye image light on LN-1 are converted into first polarized light. In the front mode thin film pattern retardation film FPR, the second polarization selection patterns P2, P4, ..., PN/2, ..., and the PN line with respect to the even line L2, L4, of the display panel PNL. .., LN/2, ..., LN, thereby converting the right-eye image light displayed on the even-numbered lines L2, L4, ..., LN/2, ..., and LN of the display panel PNL to the first Polarized light.

The left-eye filter of the polarized glasses has the first polarization selection patterns P1, P3, ..., PN/2+1, ..., PN-1, PN+1 which are the same as the film pattern phase difference film FPR. The optical axis of the optical axis. The right-eye filter of the polarized glasses has an optical axis identical to the optical axis of the second polarization selection patterns P2, P4, ..., PN/2, ..., PN of the thin film pattern phase difference film FPR. Therefore, in the front mode, the left-eye filter of the polarized glasses is transmitted through the first polarization selection patterns P1, P3, ..., PN/2+1, ... of the thin film pattern phase difference film FPR, The first polarized light of the left image of PN-1, PN+1. The right-eye filter of the polarized glasses transmits the second polarization of the right image of the second polarization selection pattern P2, P4, ..., PN/2, ..., PN of the thin film pattern phase difference film FPR Light.

In the thin film pattern phase difference film FPR of the flip mode, the second polarization selection patterns P2, P4, . . . , PN/2, . . . and the PN line are opposite to the odd lines L1, L3, . . . of the display panel PNL. ., LN/2+1, ..., LN-1, which will be displayed on the odd lines L1, L3, ..., LN/2+1, ..., and LN-1 of the display panel PNL The right eye image light is converted into a second polarized light. In the thin film pattern phase difference film FPR of the flip mode, the first polarization selection patterns P3, ..., PN/2+1, ..., PN-1, and PN+1, except for the first line Other than the polarization selection pattern P1, with respect to the even lines L2, L4, ..., LN/2, ..., LN of the display panel PNL, the even lines L2, L4, ... which will be displayed on the display panel PNL. ., LN/2, ..., and the left eye image light on the LN are converted into the first polarized light.

The right eye filter of the polarized glasses has optical axes identical to the optical axes of the first polarization selection patterns P3, ..., PN/2+1, ..., PN-1, PN+1. The right eye filter of the polarized glasses has optical axes identical to the optical axes of the second polarization selection patterns P2, P4, ..., PN/2, ..., PN. Therefore, in the flip mode, the left-eye filter of the polarized glasses is transmitted through the first polarization selection patterns P3, ..., PN/2+1, ..., PN- of the thin film pattern phase difference film FPR. 1. The first polarized light of the left image of PN+1. In the flip mode, the right eye filter of the polarized glasses is transmitted through the right image of the second polarization selection patterns P2, P4, ..., PN/2, ..., PN of the thin film pattern phase difference film FPR. The second polarized light.

As described above, the thin film pattern phase difference film FPR can be bonded to the front mode display panel PNL. The film pattern retardation film FPR is offset by a line width of the pixel array formed on the display panel PNL, and there is no change in structure to be able to be bonded to the flip mode display panel PNL. Therefore, according to the embodiment, the same thin film pattern retardation film FPR can be attached to the front mode display panel PNL or the flip mode display panel, so that a stereoscopic image can be realized normally without the left eye seen by the viewer. The image with the right eye is opposite to each other.

The thin film pattern retardation film FPR further includes excess patterns DUM1 and DUM2 at the upper end and the lower end. The redundant patterns DUM1 and DUM2 of the thin film pattern retardation film FPR and the alignment marks Ak1 to AK6 of the display panel PNL have been described, and thus will not be described herein.

The thin film pattern phase difference film FPR includes a first reference line CTL1 corresponding to the front mode and a second reference line CTL2 corresponding to the flip mode. The reference lines CTL1 and CTL2 of the thin film pattern retardation film FPR are defined as a boundary line between the first polarization selection pattern and the second polarization selection pattern adjacent to each other, and are located at the center of the film pattern retardation film FPR, and The alignment marks AK2 and AK5 formed on the opposite sides of the center of the display panel PNL are aligned.

The first reference line CTL1 is located at a line width (or a pattern width) of the thin film pattern phase difference film FPR from the second reference line CTL2. The first reference line CTL1 is a boundary line between the N/2th line and the N/2+1th line among the first line to the (N+1)th line of the thin film pattern phase difference film FPR. The second reference line CTL2 is a boundary line between the N/2+1th line and the N/2+2 line among the first to N+1th lines of the thin film pattern phase difference film FPR.

22 and 23 are schematic plan views showing that alignment marks corresponding to the front mode and alignment marks corresponding to the flip mode are collectively formed on the display panel PNL. The alignment marks shown in Figs. 22 and 23 are second alignment marks and fifth alignment marks formed on the opposite sides of the center of the display panel.

Referring to Figures 22 and 23, each of the alignment marks of the display panel PNL can be implemented as shown in Fig. 6 or Fig. 7. The alignment marks include alignment marks AK2(F), AK5(F) corresponding to the front mode, and alignment marks AK2(R), AK5(R) corresponding to the flip mode.

The alignment marks AK2(F), AK5(F) corresponding to the front mode are aligned with the first reference line CTL1 of the thin film pattern phase difference film FPR. The alignment marks AK2(R), AK5(R) corresponding to the flip mode are aligned with the second reference line CTL2 of the thin film pattern phase difference film FPR.

The alignment marks AK2(F), AK5(F) and the alignment marks AK2(R), AK5(R) corresponding to the front mode and the flip mode may have different shapes from each other, so that the left side and the right side are easily identifiable, for example, The alignment marks corresponding to the front mode and the flip mode can be designed to be symmetrical to each other. Each of the alignment marks can include a mark, a characteristic, and the like. According to an embodiment of the present invention, some characteristics may normally form the alignment marks AK2(F), AK5(F) corresponding to the front mode, and other characteristics may form the alignment mark AK2 corresponding to the flip mode in the opposite direction ( R), AK5 (R). Unlike the front mode display panel, since the upper side and the lower side are opposite to each other in the flip mode display panel PNL, if it is related to the front mode posture, the characteristic is upside down printing, when the display panel PNL is tripped in the flip mode. These characteristics can be viewed normally.

According to an embodiment of the present invention, the thin film pattern retardation film FPR is shifted by a line width (or a pattern width), and the flip mode display panel PNL is aligned with the thin film pattern retardation film FPR.

As described above, according to the embodiments, when one line of the polarization selection pattern is applied to the thin film pattern retardation film FPR, and the thin film pattern retardation film FPR is aligned with the flip mode display panel, the film pattern retardation film will be biased upward. Shift or downward offset by a line width (or a pattern width). As a result, the embodiments allow the thin film pattern retardation film to have the same structure compatible for use in the front side and flip mode display panels, so that normal 3D images can be applied to the front side and flip mode without changing the mutual input to the display panel driving circuit. Left eye/right eye image data.

According to an embodiment of the present invention, the thin film pattern retardation film FPR may be replaced with a glass pattern retardation film. Therefore, it should be noted that the alignment system and method according to the embodiments can also be applied to align the glass pattern retardation film and the display panel without being limited to the alignment display panel and the thin film pattern retardation film.

While the embodiment has been described with respect to the embodiments of the invention, it is understood that various modifications and changes of the invention may be made without departing from the spirit and scope of the invention. In particular, it is to be understood that the modifications and variations of the invention are intended to be included within the scope of the appended claims. Alternative uses will be apparent to those skilled in the art, in addition to variations and modifications in the component and configuration.

Korean Patent Application No. 10-2010-0133412, filed on December 23, 2010, and Korean Patent Application No. 10-2010-0138249, filed on Dec. 29, 2010, and on April 13, 2011 The Korean Patent Application No. 10-2011-0034422 filed on Jan. 31, the entire disclosure of which is hereby incorporated by reference.

51, 54, 61, 64. . . Left alignment pattern

52, 53, 62, 63. . . Right alignment pattern

71. . . Protective film

72. . . Surface treatment layer

73. . . Film substrate

74. . . Pattern layer

75. . . Follower

76. . . Release film

77, 77a, 77b. . . Alignment pattern

78. . . Mask

AM1 to AM4, AM1' to AM4'. . . Alignment mark

AMR. . . Allowable alignment error range

Ak1～Ak6. . . Alignment mark

BM. . . Black matrix

CTL. . . reference line

CTL1. . . First reference line

CTL2. . . Second reference line

CTL_PNL. . . Panel reference line

CTRL. . . Control computer

DR. . . drum

DUM1, DUM2. . . Excess pattern

PNL. . . Display panel

FPR. . . Thin film pattern retardation film

PGLS. . . Polarized glasses

PR. . . Thin film pattern retardation film

PR1. . . First polarization selection pattern

PR2. . . Second polarization selection pattern

ST1. . . First alignment table

ST2. . . Second alignment station

VR1 ~ VR4. . . First image system

VP1 ~ VP4. . . Second image system

The accompanying drawings, which are set forth in the claims

In the schema:

1 is a schematic view showing formation of alignment marks on each of a pattern retardation film and a display panel according to the prior art, and mutual alignment of a pattern retardation film and a display panel based on alignment marks;

2 is a schematic view showing a stereoscopic image display device according to an embodiment;

3 is a schematic view illustrating a method of aligning a stereoscopic image display device according to an embodiment;

4 is a plan view showing in detail a thin film pattern retardation film according to an embodiment;

Figure 5 is a plan view showing the alignment mark of the display panel shown in Figure 3;

6A and 6B are enlarged plan views illustrating alignment marks according to an embodiment;

7A and 7B are schematic plan views showing an unfolded alignment mark according to an embodiment;

8A and 8B are schematic plan views showing a state in which the thin film pattern retardation film and the display panel are ideally aligned with each other by using the alignment marks of FIGS. 6A and 6B;

9A and 9B are schematic plan views showing a state in which the film pattern retardation film and the display panel are misaligned with each other by using the alignment marks of FIGS. 6A and 6B;

10A and 10B are plan views illustrating a state in which the film pattern retardation film is ideally aligned with the display panel by using the alignment marks of FIGS. 7A and 7B;

11A and 11B are plan views showing a state in which the film pattern retardation film is misaligned with the display panel by using the alignment marks of FIGS. 7A and 7B;

12A to 12D are schematic views illustrating an alignment system for a stereoscopic image display device according to an embodiment;

Figure 13 is a perspective view showing the pattern retardation film and the first image system;

Figure 14 is a perspective view illustrating the display panel and the second image system;

Figure 15 is a cross-sectional view showing a cross section of a film pattern retardation film;

Figure 16 is a schematic view showing a continuous production process of a film pattern retardation film;

Figure 17 is a schematic view for explaining the exposure process as shown in Fig. 16;

FIG. 18 is a schematic view showing a combination of front view stereoscopic image display devices according to an embodiment; FIG.

19 is a schematic view showing a combination of a flip mode stereoscopic image display device according to an embodiment;

Figure 20 is a plan view showing in detail a film pattern retardation film according to an embodiment;

21 is a schematic plan view showing an ideal alignment between the thin film pattern retardation film and the display panel in the front mode and the flip mode;

22 and 23 are schematic plan views showing that alignment marks corresponding to the front mode and alignment marks corresponding to the flip mode are collectively formed on the display panel.

AK1～AK6. . . Alignment mark

FPR. . . Pattern retardation film

PAL. . . Display panel

Claims (11)

An alignment mark for a stereoscopic image display device, the stereoscopic image display device comprising: a display panel; and a pattern retardation film attached to the display panel, the alignment mark comprising: a first alignment mark, Formed in a middle left portion of the display panel; and a second alignment mark formed in a middle right portion of the display panel; wherein each of the first alignment mark and the second alignment mark comprises: One or more left patterns; and one or more right patterns disposed offset from the one or more left patterns, wherein the first and second alignment marks are associated with the first and second of the pattern retardation film Edge line alignment between the polarization selection patterns, wherein the first polarization selection pattern transmits first polarized light displayed on odd lines of the display panel, wherein the second polarization selection pattern is transmitted on the display panel The second polarized light on the even line. The alignment mark of claim 1, wherein the one or more left patterns and the one or more right patterns are parallel to the edge line. The alignment mark of claim 1, wherein the first alignment mark and the second alignment mark are symmetric with respect to a center of the display panel. An alignment method for a stereoscopic image display device, the stereoscopic image display device comprising a display panel having a first alignment mark formed in a middle left portion and a second alignment mark formed in a middle right portion And a pattern retardation film attached to the display panel, the alignment method includes: finding an edge line of the pattern retardation film, the reference line and the excess of the upper end and the lower end formed on the retardation film of the pattern One of the patterns is separated by a predetermined distance; the edge line of the pattern retardation film is aligned with the first alignment mark and the second alignment mark of the display panel; and when the pattern is retarded Attaching the pattern retardation film to the edge line and the first alignment mark and the second alignment mark of the display panel are aligned within an allowable alignment error range a display panel, wherein the first and the second alignment marks are aligned with the edge line between the first and second polarization selection patterns of the pattern retardation film, wherein the first polarization selection pattern transmission is displayed at The first polarized light on the odd line of the display panel, wherein the second polarization selective pattern transmits the second polarized light displayed on the even line of the display panel. The alignment method of claim 4, wherein each of the first alignment mark and the second alignment mark comprises one or more left patterns and one or more right patterns, the one or A plurality of right patterns are offset from the one or more left patterns. The alignment method of claim 5, wherein the one or more left patterns and the one or more right patterns are parallel to the edge line. The alignment method of claim 4, wherein the first alignment mark and the second alignment mark are symmetric with respect to a center of the display panel. An alignment system for a stereoscopic image display device, the alignment system comprising: a first alignment stage configured to support a pattern retardation film, the pattern retardation film comprising an excess pattern formed at an upper end and a lower end, and Forming a first polarization selection pattern and a second polarization selection pattern between the redundant patterns; a first image system configured to capture any one of the redundant patterns of the pattern retardation film, and a capture medium a reference line between the first polarization selection pattern and the second polarization selection pattern in the center of the pattern retardation film; a second alignment stage configured to support a display panel, the display panel Having a first alignment mark formed in a middle left portion and a second alignment mark formed in a middle right portion; a second image system configured to capture the first alignment mark of the display panel An image of the second alignment mark; a drum configured to receive the pattern retardation film from the first alignment stage, and when the reference line of the pattern retardation film is aligned with the first alignment of the display panel mark The second alignment mark in a permissible alignment error range on the retardation film is aligned in the second alignment pattern of the table is attached to the display panel; and a control computer configured to analyze and receive images from the first image system and the second image system, and control activation of at least one of the first alignment stage and the second alignment stage and activation of the drum And causing the reference line of the pattern retardation film to be aligned with the first alignment mark and the second alignment mark of the display panel within the allowable alignment error range. The alignment system of claim 8, wherein each of the first alignment mark and the second alignment mark comprises one or more left patterns and one or more right patterns, the one or A plurality of right patterns are offset from the one or more left patterns. The alignment system of claim 8, wherein the first alignment mark and the second alignment mark are aligned with a reference line of the polarization selection patterns based on the pattern retardation film. The alignment system of claim 8, wherein the display panel is one of a front mode and a flip mode, and the first polarization selection of the pattern retardation film in the front mode The pattern transmits a left-eye image light displayed on the odd display lines of the display panel as the first polarized light, and transmits a right-eye image light displayed on the even-numbered display lines of the display panel as the second polarized light; In the flip mode, the first polarization selection pattern of the pattern retardation film transmits a right-eye image light displayed on the odd display lines of the display panel as the first polarized light, and transmits an even number displayed on the display panel. A left eye image light on the display line is used as the second polarized light.