TWI471611B - Method of fabricating stereoscopic display panel - Google Patents

Description

Method for manufacturing stereoscopic display panel

The present invention relates to a method of manufacture, and more particularly to a method of fabricating a stereoscopic display.

The user's attention to the quality of audio-visual entertainment has driven the development of the display industry. Compared with the two-dimensional (2D) image display, the three-dimensional (3D) stereoscopic image display makes people feel the visual enjoyment.

The human eye mainly uses the binocular parallax effect to experience the stereoscopic visual effect. Due to the different positions of the two eyes, the two eyes have different viewing angles, and the images received by the left and right eyes are different. Then, by the operation of the brain, the images received by the left and right eyes are combined to make the viewer feel the stereoscopic image.

The stereoscopic display applies the above-mentioned two-eye parallax effect mainly by attaching the pixels corresponding to the left and right eye images in the patterned phase difference layer to the pixels of the left and right eye images displayed in the display, and matching the polarized lenses to make the viewing The left and right eyes receive different images, and then feel a Stereoscopic image.

However, in the process of the stereoscopic display, if the patterned phase difference layer and the display panel are not precisely aligned, the images of the left and right eyes are cross-talked, and the image quality of the stereoscopic display is lowered.

The general solution is to add a polarizing plate with different polarization directions in the alignment process, and adjust the angle between the polarization direction of the polarizing plate and the polarization direction of the patterned phase difference layer to improve the accuracy of the alignment. However, the conventional alignment process is to inject light into one side of the protective film of the polarizing unit to read the alignment mark of the patterned phase difference layer in the polarizing unit. Then, the polarizing unit is transferred and curled onto the drum so that the protective film is located inside, and the side of the polarizing unit with respect to the protective film is attached to the display panel by a roller.

Although the above method can accurately read the alignment mark of the patterned phase difference layer in the polarizing unit, the step of transferring the polarizing unit to the roller, and the step of attaching the polarizing unit to the display panel by using the roller, the mechanical device Some slight errors will cause deviation between the polarizing unit and the display panel, and reduce the accuracy of the alignment, thereby increasing the influence of mutual interference between the left and right eye images.

In view of the above, it is not necessary to provide a method of manufacturing a stereoscopic display panel to improve the drawbacks of the conventional method of manufacturing a stereoscopic display panel.

Therefore, an aspect of the present invention provides a method for manufacturing a stereoscopic display panel, which uses an optical layer to adjust light in a polarizing unit. The change, and the difference between the grayscale values, can clearly distinguish the first image and the second image represented by the third light and the fourth light, thereby correctly aligning and conforming to the polarizing unit and the display panel.

According to the above aspect of the invention, a method of manufacturing a stereoscopic display panel is proposed. In one embodiment, the method first provides a registration system, wherein the alignment system includes a carrier, an optical layer, a polarizing unit, a first optical system, a display panel, and a second optical system. The optical layer is disposed on the carrying platform, and the polarizing unit is disposed on the optical layer. The polarizing unit includes a protective film, a patterned phase difference layer, a polarizing layer, and a phase difference layer. The aforementioned protective film is provided on the optical layer. The patterned phase difference layer is disposed on the protective film, and the patterned retardation layer has a first pattern. The first pattern includes a first region and a second region, wherein the second region is adjacent to the first region. The polarizing layer is disposed on the patterned phase difference layer, and the phase difference layer is disposed on the polarizing layer.

The first optical system is disposed above the polarizing unit, the display panel is disposed above the polarizing unit, the display panel has a second pattern, and the second optical system is disposed adjacent to the display panel, and the second optical system Electrically connected to the first optical system.

Then, the first light is emitted by the first optical system, wherein the first light is incident on the polarizing unit at an incident angle and is reflected by the optical layer to the second light. At the same time, the second light passes through the second region to form a fourth light. The aforementioned second light has a linear polarization direction, and the third light and the fourth light have different polarization angles.

And then receiving the third light and the first light by using the first optical system Four rays are respectively displayed to respectively display the first image corresponding to the first region and the second image corresponding to the second region.

Thereafter, the first gray level value of the first image and the second gray level value of the second image are measured by the first optical system. A second pattern of the display panel is read using the second optical system and at least a second coordinate value of the second pattern is calculated.

After calculating the second coordinate value, the controller of the first optical system described above determines the difference between the first grayscale value and the second grayscale value. When the difference is greater than or equal to 30, at least a first coordinate value of the first pattern is calculated, and the first coordinate value of the first pattern and the second coordinate value of the second pattern are aligned.

After aligning the coordinate values of the first pattern and the second pattern, the polarizing unit and the display panel are attached to form a stereoscopic display panel.

According to an embodiment of the invention, the polarizing unit comprises an adhesive layer, and the adhesive layer is disposed on the phase difference layer of the polarizing unit.

According to another embodiment of the present invention, the patterned phase difference layer may be a λ/4 phase difference layer, and λ is a wavelength of incident light incident on the patterned phase difference layer.

According to still another embodiment of the present invention, the first region and the second region of the first pattern have different alignment directions.

According to still another embodiment of the present invention, the optical layer may be a brightness enhancement film.

According to still another embodiment of the present invention, the optical layer may be a multilayer film, and the multilayer film comprises a polarizing film and a reflective film.

According to still another embodiment of the present invention, the polarizing unit is disposed on the optical layer by adhesion or adsorption.

According to still another embodiment of the present invention, the first optical system and the second optical system are the same or different, and the first optical system and the second optical system respectively comprise a photosensitive coupled device (CCD). .

According to still another embodiment of the present invention, the incident angle of the incident light is less than or equal to 10°.

According to still another embodiment of the present invention, the incident angle of the incident light is 0°.

According to still another embodiment of the present invention, after the second light passes through the protective film of the polarizing unit, the second light may have a circular polarization direction or an elliptical polarization direction.

According to still another embodiment of the present invention, after the third light and the fourth light pass through the polarizing layer and the phase difference layer, the third light and the fourth light respectively have different brightnesses.

According to still another embodiment of the present invention, the stereoscopic display panel has a display area and a peripheral area, and the first pattern and the second pattern are disposed between the display area, the peripheral area, or the display area and the peripheral area.

According to still another embodiment of the present invention, the linear polarization direction of the second light beam has a polarization angle.

The manufacturing method of the stereoscopic display of the present invention uses an optical layer to adjust the change of light in the polarizing unit, and distinguishes the first image represented by the third light and the fourth light by the difference of the gray scale values and Second shadow For example, the carrier can be moved at the same time to align and conform to the polarizing unit and the display panel, thereby forming a stereoscopic display panel, thereby reducing the defect that the left and right eye images interfere with each other in the stereoscopic display panel.

100‧‧‧ method

110‧‧‧Steps to provide a registration system

120‧‧‧Steps of using the first optical system to emit the first light

130‧‧‧Steps of receiving the third and fourth rays passing through the patterned phase difference layer using the first optical system

140‧‧‧Steps for measuring the first grayscale value and the second grayscale value using the first optical system

150‧‧‧Steps for calculating the second coordinate value of the second pattern using the second optical system

160‧‧‧Steps for determining whether the difference between the first grayscale value and the second grayscale value is greater than or equal to 30

160a‧‧‧Steps for adjusting the process parameters of the polarizing unit

170‧‧‧Steps for calculating the first coordinate value of the first pattern

180‧‧‧Steps of aligning the first coordinate value of the first pattern with the second coordinate value of the second pattern

190‧‧‧Steps for attaching polarizing unit and display panel

191‧‧‧ Made of stereo display panel

200‧‧‧ alignment system

210‧‧‧Loading station

210a/210b‧‧‧ Direction

220‧‧‧Optical layer

230‧‧‧Polarized unit

231‧‧‧Protective film

233‧‧‧ patterned phase difference layer

233a‧‧‧first pattern

233b‧‧‧First area

233c‧‧‧Second area

235‧‧‧ polarizing layer

237‧‧‧ phase difference layer

240‧‧‧First optical system

250/251/252/253a/253b/254a/254b/255a/255b/256a/256b/257a/257b/258a/258b/259a/259b‧‧ ‧Light

260‧‧‧ display panel

270‧‧‧Second optical system

300‧‧‧Computation System

1 is a flow chart showing a method of manufacturing a stereoscopic display according to an embodiment of the present invention.

Figure 2A is a side elevational view of a registration system in accordance with an embodiment of the present invention.

2B is a perspective view of a patterned phase difference layer in accordance with an embodiment of the present invention.

Figure 3 is a side elevational view of a carrier, an optical layer, and a polarizing unit in accordance with an embodiment of the present invention.

Fig. 4A is a gray scale diagram showing a third pattern of Embodiment 1 according to the present invention.

Fig. 4B is a gray scale diagram showing a third pattern in accordance with Embodiment 2 of the present invention.

Fig. 4C is a gray scale diagram showing a third pattern in accordance with Embodiment 3 of the present invention.

Fig. 5 is a gray scale diagram showing a third pattern of a comparative example according to the present invention.

The making and using of the embodiments of the invention are discussed in detail below. However, it will be appreciated that the embodiments provide many applicable inventive concepts that can be implemented in a wide variety of specific content. The specific embodiments discussed are illustrative only and are not intended to limit the scope of the invention.

The term "non-polarized light" as used in the present invention means that the light intensity in each polarization direction of the light is uniform. "Polarized light" means that in a particular direction of polarization, a particular direction of polarization has a greater intensity of light, such that the direction of travel has a particular directivity.

1 to 2B, wherein FIG. 1 is a flow chart showing a method of manufacturing a stereoscopic display panel according to an embodiment of the present invention, and FIG. 2A is a view showing a registration system according to an embodiment of the present invention. A side view, and FIG. 2B is a perspective view of a patterned phase difference layer in accordance with an embodiment of the present invention. In one embodiment, the alignment system 200 in FIG. 2A uses the method 100 shown in FIG. 1 to align the polarizing unit 230 with the display panel 260 to create a stereoscopic display panel.

In FIG. 1, method 100 first performs the steps of providing a registration system, as shown in step 110. In FIG. 2A, the alignment system 200 includes a carrier 210, an optical layer 220, a polarizing unit 230, a first optical system 240, a display panel 260, and a second optical system 270.

In FIG. 2A, the optical layer 220 described above is disposed on the carrier 210. The polarizing unit 230 is disposed on the optical layer 220 , and the polarizing unit 230 includes a protective film 231 , a patterned phase difference layer 233 , a polarizing layer 235 , and a phase difference layer 237 . In an embodiment, the optical layer 220 can be a brightness enhancing film. In an embodiment, the polarizing unit 230 can be adhered by (for example, a micro-adhesive side) The method, adsorption (for example, capillary vacuum adsorption method), other suitable methods, or any combination of the above methods are provided on the optical layer 220.

The protective film 231 is disposed on the optical layer 220, the patterned phase difference layer 233 is disposed on the protective film 231, the polarizing layer 235 is disposed on the patterned phase difference layer 233, and the phase difference layer 237 is disposed on the polarizing layer 235. .

In FIG. 2B, the patterned phase difference layer 233 has a first pattern 233a, wherein the first pattern 233a includes a first region 233b and a second region 233c, and the first region 233b and the second region 233c have different alignment directions respectively. . The second region 233c is adjacent to the first region 233b. In one embodiment, the patterned phase difference layer 233 can be a λ/4 phase difference layer, and the aforementioned λ represents the wavelength of incident light incident on the patterned phase difference layer 233.

Referring to FIG. 2A, the first optical system 240 is disposed above the polarizing unit 230, the display panel 260 is disposed above the polarizing unit 230, the second optical system 270 is disposed adjacent to the display panel 260, and the second The optical system 270 is electrically connected to the first optical system 240, wherein the display panel 260 has a second pattern (not shown).

In an embodiment, the stereoscopic display panel has a display area and a peripheral area (not shown). The above-mentioned "display area" is a region in which a stereoscopic display panel is used to display a pixel of a screen, and a "peripheral region" is a portion adjacent to a display region. The aforementioned second pattern may be disposed between the display area, the peripheral area, or between the display area and the peripheral area.

Referring to FIGS. 2A and 2B , in an embodiment, the first pattern 233 a of the patterned phase difference layer 233 is the same as the display panel 260 . The second pattern. In another embodiment, the first pattern 233a of the patterned phase difference layer 233 is similar to the second pattern of the display panel 260. The above-mentioned "identical" means that the first pattern 233a of the patterned phase difference layer 233 and the second pattern of the display panel 260 have the same geometric shape and the same size. "Similar" means that the two patterns have partially identical patterns. [For example, the boundary line of the first pattern 233a of the patterned phase difference layer 233 and the boundary line (not shown) of the black matrix of the display panel 260 are two straight lines parallel to each other. ]

In one embodiment, the first pattern 233a and the second pattern are repeatedly and arbitrarily distributed on one or all of the patterned phase difference layer 233 and the display panel 260.

Referring to FIG. 2A , in an embodiment, the first optical system 240 and the second optical system 270 can be electrically connected to the computing system 300 . The computing system 300 can be used to receive and calculate data measured by the first optical system 240 and the second optical system 300 to display the parameter values of the foregoing method 100.

Please refer to FIG. 1 to FIG. 3 . FIG. 3 is a side view of a carrier, an optical layer and a polarizing unit according to an embodiment of the present invention, wherein FIG. 3 is a polarizing unit 230 in FIG. 2A . The layers are separated, and the light incident on the polarizing unit 230 and the light emitted from the polarizing unit 230 are separately shown to clearly illustrate the change of the polarization direction of the light in the polarizing unit 230. In one embodiment, after step 110 of FIG. 1 is performed, the step of transmitting the first ray 250 by the first optical system 240 is performed, as shown in step 120. In Fig. 3, the first ray 250 is incident on the polarized light at an incident angle. In unit 230, and the first ray 250 can be a polarized light. The aforementioned incident angle is less than or equal to 10°. In an embodiment, the angle of incidence may be 0°. When the light 250 passes through the phase difference layer 237, although the phase difference layer 237 affects the polarization direction of the incident light 250, the incident light 250 of the unpolarized light is affected by the phase retardation of the phase difference layer 237, and the formed light is formed. 251 is still unpolarized.

When the light ray 251 continues to pass through the polarizing layer 235, the light ray 251 forms the light 252. The light ray 252 may have a linear polarization direction according to the angle of the alignment direction of the polarizing layer 235, wherein the polarization angle of the linear polarization direction is the alignment angle of the alignment direction of the polarizing layer 235.

Then, depending on the position at which the ray 250 is incident, the ray 252 may form the ray 253a or 253b by patterning the first region 233b or the second region 233c of the first pattern 233a of the phase difference layer 233, respectively. Since the patterned phase difference layer 233 can be a λ/4 phase difference layer, when the light ray 252 having a linear polarization direction passes through the patterned phase difference layer 233, the linear polarization direction of the light 252 changes to a circular polarization direction. Furthermore, depending on the alignment direction of the first region 233b and the second region 233c of the patterned phase difference layer 233, the light ray 253a may have a left-hand circular polarization direction or a right-hand circular polarization direction, and the light ray 253b has a light 253a. Conversely, the right-handed circular polarization direction or the left-handed circular polarization direction.

After the light rays 253a and 253b continue to pass through the protective film 231, the light rays 253a and 253b respectively form light rays 254a and 254b, wherein the light rays 254a and 254b are affected by the protective film 231, and the circular polarization directions of the light rays 254a and 254b are converted into elliptical polarization. direction. When the phase of the protective film 231 When the difference is small, the forward directions of the rays 254a and 254b are not affected (i.e., the left-handed circular polarization direction is converted to the left-handed elliptical polarization direction, and the right-handed circular polarization direction is converted to the right-handed elliptical polarization direction). When the phase difference of the protective film 231 is sufficiently large, the forward directions of the light rays 254a and 254b are affected (in other words, the left-handed circular polarization direction is converted into the right-handed elliptical polarization direction, and the right-handed circular polarization direction is changed to the left-handed rotation. Elliptical polarization direction). The influence of the phase difference of the foregoing protective film 231 is well known to those of ordinary skill in the art to which the present invention pertains, and therefore will not be further described herein. Next, when the light rays 254a and 254b are irradiated to the optical layer 220, the optical layer 220 may reflect the light rays 254a and 254b to form the light rays 255a and 255b, respectively, and the light rays 255a and 255b each have a linear polarization direction. Since the optical layer 220 has an alignment angle, the linear polarization directions of the rays 255a and 255b have a polarization angle.

In one embodiment, the optical layer 220 can be a multilayer film, and the multilayer film can include a polarizing film and a reflective film, wherein the polarizing film can have a linear polarization direction through the light passing through. In this embodiment, the light rays 254a and 254b are first reflected by the reflective film, and the reflected light rays pass through the polarizing film, and the formed light rays 255a and 255b each have a linear polarization direction.

Thereafter, when the light rays 255a and 255b pass through the protective film 231, the light rays 255a and 255b can be converted into light rays 256a and 256b having an elliptical polarization direction. In an embodiment, the rays 256a and 256b may also have a circular polarization direction.

When the light rays 256a and 256b respectively pass through the first region 233b and the second region 233c of the first pattern 233a of the phase difference layer 233, the light Lines 256a and 256b are converted into rays 257a and 257b, respectively, wherein rays 257a and 257b have an elliptical polarization direction. Moreover, since the first region 233b and the second region 233c of the first pattern 233a of the patterned retardation layer have different alignment directions, the light rays 257a and 257b have different polarization angles.

Then, when the light rays 257a and 257b pass through the polarizing layer 235, the light rays 257a and 257b form the light rays 258a and 258b, respectively. The light rays 257a and 257b are affected by the polarization direction of the polarizing layer 235, and the polarization directions of the light rays 258a and 258b are converted into linear polarization directions. Wherein, since the polarization angles of the elliptical polarization directions of the light rays 257a and 257b are different, the light rays 257a and 257b can pass through the polarizing layer 235 with different amounts of light, so that the light rays 258a and 258b have different brightnesses.

Next, when the light rays 258a and 258b pass through the phase difference layer 237, the light rays 258a and 258b form light rays 259a and 259b, respectively. Among them, since the brightness of the light rays 258a and 258b are different, the light rays 259a and 259b also have different brightness.

Please refer to Figure 1 again. After performing step 120, the step of receiving the third light (ie, the light ray 259a in FIG. 3) and the fourth light (ie, the light ray 259b in FIG. 3) by the first optical system is performed, as shown in step 130. The first image corresponding to the first region 233b of FIG. 3 and the second image corresponding to the second region 233c of FIG. 3 may be respectively displayed. Then, the step of measuring the first grayscale value of the first image and the second grayscale value of the second image by using the first optical system 240 is performed, as shown in step 140. Since the rays 259a and 259b in Fig. 3 have different brightness, the first gray of the first image The order value and the second gray level value of the second image have a difference.

Please continue to refer to Figure 1. After performing step 140, a step of reading the second pattern of the display panel by the second optical system and calculating at least a second coordinate value of the second pattern is performed, as shown in step 150. In an embodiment, the method 100 may perform step 150 after performing step 110. Then, steps 120, 130, and 140 are sequentially performed. In another embodiment, when the method 100 performs steps 120, 130, and 140, the step 150 may also be performed simultaneously.

Then, a step of determining whether the difference between the first grayscale value and the second grayscale value is greater than or equal to 30 by using a controller (not shown) of the first optical system or a computing system is performed, as shown in step 160. If the difference between the first grayscale value and the second grayscale value is greater than or equal to 30, when the user views the first image and the second image by using the first optical system 240 in FIG. 2A, the user can be clear The first image and the second image are resolved, so the step of calculating the first coordinate value of the first pattern using the controller or computing system of the first optical system can be continued, as shown in step 170.

If the difference is less than 30, the user cannot distinguish the first image and the second image through the first optical system 240 in FIG. 2A, thereby failing to utilize the controller or computing system 300 of the first optical system 240. The first coordinate value of the first pattern 233a of FIG. 3 is accurately calculated, so the process of re-adjusting the process parameters of the polarizing unit must be performed, as shown in step 160a, so that the first grayscale value and the second grayscale value are The difference can be greater than or equal to 30.

Please refer to Figure 3 again. In an embodiment, if the light rays 256a and 256b passing through the protective film 231 have a linear polarization direction, the light ray 256a After the 256b is patterned by the phase difference layer 233, the light rays 257a and 257b formed by the light rays 256a and 256b have a circular polarization direction. Then, when the light rays 257a and 257b pass through the polarizing layer 235, the formed light rays 258a and 258b have a linear polarization direction. However, when the light rays 257a and 257b having circularly polarized light pass through the polarizing layer 235, even if the polarization directions of the circularly polarized light are different, the light rays 258a and 258b having the linear polarization direction are formed to have the same brightness after passing through the polarizing layer 235. Then, the subsequently formed light rays 259a and 259b also have the same brightness, so that the first gray scale value is the same as the second gray scale value, which makes it difficult for the user to distinguish the first image and the second image.

After step 170 of FIG. 1, the step of aligning at least one first coordinate value of the first pattern 233a with at least one second coordinate value of the second pattern is continued, as shown in step 180. In FIG. 2A, the step of aligning the first coordinate value and the second coordinate value is performed by moving the stage 210 along the direction 210a, but not moving the display panel 260 to align the first coordinate value and the second coordinate value. In an embodiment, the step of aligning the first coordinate value and the second coordinate value may move the display panel 260 along the direction 210a, but not move the carrier 210 to align the first coordinate value with the second coordinate value. In another embodiment, the step of aligning the first coordinate value with the second coordinate value may move the carrier 210 and the display panel 260 simultaneously or sequentially to align the first coordinate value with the second coordinate value.

When the first coordinate value is aligned with the second coordinate value, then the carrier is moved along the direction 210b to perform the steps of bonding the polarizing unit and the display panel. As shown in step 190, a stereoscopic display panel is fabricated. In a real In the embodiment, in steps 180 and 190, the stage can be moved along the X-axis, the Y-axis, the Z-axis, or any combination of the above directions.

In an embodiment, in FIG. 2A, the polarizing unit 230 can be attached to the display panel 260 by means of adhesion. Therefore, the polarizing unit 230 may include an adhesive layer. The adhesive layer is disposed on the phase difference layer 237 of the polarizing unit 230. In this embodiment, the adhesive layer may include a release film, and the release film is disposed on the adhesive layer to protect the adhesive layer of the polarizing unit 230. This release film only needs to be removed before performing step 190 in FIG.

Please refer to Figures 2A and 2B. In an embodiment, the first optical system 240 and the second optical system 270 may be the same or different, and the first optical system 240 and the second optical system 270 may respectively include a photosensitive coupling element (Charge- Coupled Device; CCD) or other optical system that emits light and receives light. In another embodiment, the alignment system 200 can have only one optical system. The optical system can first calculate the first coordinate value of the first pattern 233a, and then read the second pattern of the display panel 260, and calculate The second coordinate value of the second pattern.

According to the above description, the present invention utilizes a first optical system to emit a light, which is reflected by an optical layer such that the reflected light has a linear polarization direction and receives the first pattern through the first optical system. Light of a region and a second region to display a first image corresponding to the first region and a second image corresponding to the second region. Then, the first coordinate value of the first pattern is calculated by the difference between the grayscale values of the first image and the second image, and the first coordinate value and the second coordinate value of the display panel are aligned, and The polarizing unit and the display panel can be attached to form a stereoscopic display panel.

The following examples are used to illustrate the application of the present invention, and are not intended to limit the present invention, and various modifications and refinements can be made without departing from the spirit and scope of the invention.

Example 1

First, a photosensitive coupling element (CCD), a polarizing unit, an optical layer, and a carrier are provided as described above. In the polarizing unit, the optical layer is a brightness enhancement film, and the alignment angle of the optical layer and the alignment angle of the polarizing layer have an angle of 0°.

Then, a light is emitted from the polarizing unit by the CCD, wherein the incident angle of the light entering the polarizing unit is 0°. Then, the CCD is used to receive the light reflected by the optical layer and through the first pattern of the phase difference layer to display the first image and the second image in the CCD.

Examples 2 and 3 and Comparative Examples

In the examples 2 and 3 and the comparative examples, the third pattern was observed using the same apparatus and method as in the first embodiment. The difference between the two alignment angles of Examples 2 and 3 is that the angles between Examples 2 and 3 are 45° and 90°, respectively. In the comparative example, the optical layer is changed into a reflective layer, wherein the reflective layer does not have an alignment angle, so that there is no angle between the reflective layer and the polarizing layer.

Please refer to Figures 4A to 5, where Figures 4A to 4C are shown separately. A gray scale diagram showing a third pattern according to Embodiments 1 to 3 of the present invention, and Fig. 5 is a gray scale diagram showing a third pattern according to a comparative example of the present invention. In FIGS. 4A to 4C, the difference between the grayscale values of the first image (bright line) and the second image (dark line) is 45, 100, and 50, respectively. Since the gray scale values of the embodiments 1 to 3 are all greater than or equal to 30, the user can clearly distinguish the first image (bright line) and the second image (dark line), and can accurately align the polarizing unit and the display panel.

Furthermore, according to the results of FIGS. 4A to 4C, the angle between the alignment angle of the optical layer and the alignment angle of the polarizing layer does not affect the imaging of the first image and the second image, and the complexity of the process can be reduced.

However, in FIG. 5, since the reflected light passes through the protective layer, it is affected by the optical scattering of the protective layer, so that the polarization state of the light passing through the patterned phase difference layer (ie, the third light and the fourth light) is not obvious. The difference between the first image (bright line) and the second image (dark line) is not significantly different, and thus the first image and the second image are not easily distinguished, so that the polarizing unit and the display panel cannot be aligned.

It can be seen from the above embodiments of the present invention that the manufacturing method of the stereoscopic display panel of the present invention has an advantage of using an optical layer to reflect the light incident on the polarizing unit to adjust the change of the polarization direction of the light in the polarizing unit, and by the gray scale value The difference is used to resolve the first image and the second image to calculate a first coordinate value of the first pattern. Then, the polarizing unit and the display panel are aligned by the first coordinate value of the first pattern and the second coordinate value of the display panel, and the polarizing unit and the display panel are attached.

Furthermore, the method for manufacturing a stereoscopic display panel of the present invention can simultaneously move the carrier to perform alignment when reading the first pattern of the polarizing unit. The steps of the light unit and the display panel. Then, the carrying platform is moved to fit the polarizing unit and the display panel, and the polarizing unit is not required to be additionally transferred to another device, and the deviation can be reduced, thereby improving the defects of the conventional alignment method.

The present invention has been disclosed in the above embodiments, and is not intended to limit the present invention. Any one of ordinary skill in the art to which the present invention pertains can make various changes without departing from the spirit and scope of the invention. The scope of protection of the present invention is therefore defined by the scope of the appended claims.

100‧‧‧ method

110‧‧‧Steps to provide a registration system

120‧‧‧Steps of using the first optical system to emit the first light

130‧‧‧Steps of receiving the third and fourth rays passing through the patterned phase difference layer using the first optical system

140‧‧‧Steps for measuring the first grayscale value and the second grayscale value using the first optical system

150‧‧‧Steps for calculating the second coordinate value of the second pattern using the second optical system

160‧‧‧Steps for determining whether the difference between the first grayscale value and the second grayscale value is greater than or equal to 30

160a‧‧‧Steps for adjusting the process parameters of the polarizing unit

170‧‧‧Steps for calculating the first coordinate value of the first pattern

180‧‧‧Steps of aligning the first coordinate value of the first pattern with the second coordinate value of the second pattern

190‧‧‧Steps for attaching polarizing unit and display panel

191‧‧‧ Made of stereo display panel

Claims (14)

A method for manufacturing a stereoscopic display panel, comprising: providing a pair of bit systems, wherein the alignment system comprises: a carrier; an optical layer disposed on the carrier; a polarizing unit disposed on the optical layer, wherein The polarizing unit comprises: a protective film disposed on the optical layer; a patterned phase difference layer disposed on the protective film, wherein the patterned phase difference layer has a first pattern, wherein the first pattern comprises: a first region; and a second region adjacent to the first region; a polarizing layer disposed on the patterned phase difference layer; and a phase difference layer disposed on the polarizing layer; a first optical The system is disposed above the polarizing unit; a display panel is disposed above the polarizing unit, and the display panel has a second pattern; and a second optical system is disposed adjacent to the display panel and electrically connected The first optical system emits a first light by using the first optical system, wherein the first light is incident on the polarizing unit at an incident angle and is reflected by the optical layer into a second light, the second A line formed by the third light after the first region, while the second light beam is formed by a fourth after the second region, wherein The second light has a linear polarization direction, and the third light and the fourth light have different polarization angles; the third light and the fourth light are received by the first optical system to respectively display corresponding a first image of one region and a second image corresponding to one of the second regions; measuring, by the first optical system, a first grayscale value of the first image and a second grayscale value of the second image Reading the second pattern of the display panel by using the second optical system, and calculating at least a second coordinate value of the second pattern; determining, by using a controller of the first optical system, the first grayscale value and a difference between the second grayscale value, when the difference is greater than or equal to 30, calculating at least a first coordinate value of the first pattern, and aligning the at least one first coordinate value of the first pattern and The at least one second coordinate value of the second pattern; and the polarizing unit and the display panel are bonded to form the stereoscopic display panel. The method of manufacturing a stereoscopic display panel according to claim 1, wherein the polarizing unit comprises an adhesive layer, and the adhesive layer is disposed on the phase difference layer of the polarizing unit. The method of manufacturing a stereoscopic display panel according to claim 1, wherein the patterned phase difference layer is a λ/4 phase difference layer, and the λ is a wavelength of incident light incident on the phase difference layer of the patterning layer. The method of manufacturing a stereoscopic display panel according to claim 1, wherein the first region and the second region of the first pattern respectively have different alignment directions. The method of manufacturing a stereoscopic display panel according to claim 1, wherein the optical layer is a brightness enhancement film. The method of manufacturing a stereoscopic display panel according to claim 1, wherein the optical layer is a multilayer film, and the multilayer film comprises a polarizing film and a reflective film. The method of manufacturing a stereoscopic display panel according to claim 1, wherein the polarizing unit is disposed on the optical layer by adhesion or adsorption. The manufacturing method of the stereoscopic display panel of claim 1, wherein the first optical system and the second optical system are the same or different, and the first optical system and the second optical system respectively comprise a photosensitive coupling element (Charge-coupled Device; CCD). The method of manufacturing a stereoscopic display panel according to claim 1, wherein the incident angle is less than or equal to 10°. A method of manufacturing a stereoscopic display panel according to claim 9, Wherein the incident angle is 0°. The method of manufacturing a stereoscopic display panel according to claim 1, wherein the second light has a circular polarization direction or an elliptical polarization direction after the second light passes through the protective film of the polarizing unit. The manufacturing method of the stereoscopic display panel of claim 1, wherein the third light and the fourth light respectively have different brightness after passing through the polarizing layer and the phase difference layer . The method of manufacturing a stereoscopic display panel according to claim 1, wherein the stereoscopic display panel has a display area and a peripheral area, and the second pattern is disposed on the display area, the peripheral area or the display area and the periphery Between the regions, wherein the peripheral region is adjacent to the display region. The method of manufacturing a stereoscopic display panel according to claim 1, wherein the linear polarization direction of the second light has a polarization angle.