TWI395023B - Display device and methods thereof - Google Patents

Description

Display device and method thereof

The present invention relates to a multi-view display device, and more particularly to a multi-view display device capable of simultaneously displaying two-dimensional/three-dimensional images.

As technology advances, display devices have evolved from single-view displays to multi-view displays, enabling different users to view the same/or different images at different viewing angles to meet the various needs of the user. However, the general dual-vision display device utilizes the image segmentation layer to generate light of different angles, and can only present two-dimensional images at different viewing angles, which cannot meet the needs of the user.

For example, when the vehicle is equipped with a dual-vision display device, the driver can view the required driving information on the driver's seat while driving, and the next-door passenger can watch the movie as desired. However, when the driving time is too long, the passenger may feel tired or bored because of watching the two-dimensional image for a long time, and it is desirable to have different image presentations, such as three-dimensional images.

Furthermore, the conventional stereoscopic image display device uses the phase difference device to generate two different polarized lights. When the viewer wears the corresponding polarized glasses, the different polarized light images of the positive viewing angle can be viewed from the left and right eyes, and then Produces a stereoscopic image in the brain. However, when a plurality of users wish to see different stereoscopic images at the same time, it is necessary to purchase a plurality of stereoscopic image display devices, resulting in site and cost constraints.

Therefore, it is necessary to provide a multi-view display device that can display two-dimensional/three-dimensional images according to a user's choice to meet the needs of the consumer.

In view of the above deficiencies of the prior art, an aspect of the present invention is to provide a display device that can display multiple display images to different users, and can provide two-dimensional or three-dimensional multi-display images to meet the needs of specific users.

Another aspect of the present invention provides a display device that can simultaneously display two-dimensional and three-dimensional multi-display images to different users.

Another aspect of the present invention is to provide a display device capable of presenting multi-view displays having different display intensities in response to different applications.

In one embodiment, the present invention provides a display device including a display panel, an image segmentation layer, and a phase difference device. The display panel is configured to provide an original image optical signal; and the image grading layer is disposed above the display panel, and has a parallel shielding pattern in a first direction, so that the original image optical signal becomes a plurality of display image optical signals having different display angles. The phase difference device has a parallel phase pattern of a second direction on one side of the image grading layer, wherein the second direction is perpendicular to the first direction, so that the display image optical signals include a first phase light and a second Phase light.

In various embodiments, the phase difference device can be selectively formed on the image grading layer, between the image grading layer and the display panel, or integrated into the display panel.

In another embodiment, the display panel includes a color filter layer having different pitches to make the intensity of the plurality of display image optical signals different. In addition, the display device further includes a polarizing element for biasing the display image light signals. Furthermore, the display device further includes an optical lens for a user to wear. The optical lens has a first phase lens and a second phase lens, wherein the user wearing the optical lens views the first phase light formed by the display device and is formed by one of the display image light signals. The second phase light is combined to form a stereo image.

Another aspect of the present invention provides a touch display device, which integrates a touch panel and the display device, and can not only display two-dimensional/three-dimensional multi-view images, but also facilitate user input of instructions on the display screen to simplify operations. .

Another aspect of the present invention provides a method of forming a display device, comprising: providing a display panel to provide an original image optical signal; forming an image grading layer above the display panel, the image grading layer having a first direction a parallel shielding pattern, wherein the image grading layer is configured to make the original image optical signal into a plurality of display image optical signals having different display angles; and forming a phase difference device having a parallel phase pattern in a second direction, the second direction system The display image optical signal includes a first phase light and a second phase light.

Another aspect of the present invention provides a method for presenting a stereoscopic image, comprising: providing a display panel to provide an original image optical signal; forming an image sub-image layer above the display panel, the image sub-layer having a first direction parallel a masking pattern, wherein the image grading layer is configured to make the original image optical signal into a plurality of display image optical signals having different display angles; and forming a phase difference device having a parallel phase pattern in a second direction, the second direction is The first direction is vertical such that the display image optical signals include a first phase light and a second phase light; and an optical lens is provided for a user to wear, the optical lens has a first phase lens and a second phase The lens, wherein the user wearing the optical lens, views the first phase light and the second phase light formed by one of the image optical signals, and combines to form a stereo image.

The invention discloses a display device and a method, which can provide two-dimensional/three-dimensional multi-view to users with different needs. The above and other aspects, features, and advantages of the present invention will become more apparent from The same components in the exemplary embodiments of the present invention. It is further to be understood that the invention is not limited to the details of the specific embodiments.

FIG. 1 is a schematic diagram of a display device 10 according to an embodiment of the invention. The display device 10 includes a display panel 100, an image sub-layer 110, and a phase difference 120. The display panel 100 may be a liquid crystal display panel, as is known to those skilled in the art, which is a structure in which the upper and lower substrates are joined and the liquid crystal layer 106 is sandwiched therein. The lower substrate includes a pixel array element 102 (eg, a transistor) and the upper substrate includes a color filter layer 104. The light source provided by the light source of the conventional liquid crystal panel controls the change of the liquid crystal layer 106 through the pixel array element 102, and the color image light signal can be provided through the action of the color filter layer 104. In the embodiment of the present invention, a similar liquid crystal panel is used as the display panel 100 to provide original image optical signals, such as composite two-dimensional/three-dimensional image optical signals. The present invention is described by taking a liquid crystal panel as an example. The display panel 100 can also be replaced by an organic light emitting diode (OLED) panel with a polarizing plate, which is well known to those skilled in the art, and therefore will not be described again.

The image grading layer 110 has a parallel shielding pattern in a first direction, so that the original image optical signal becomes a plurality of display image optical signals having different display angles. In this embodiment, the image grading layer 110 is a patterned shielding layer formed on the glass plate 112, and is bonded to the display panel 100 by the organic layer 114. For example, the first direction parallel shielding pattern of the image grading layer 110 may be a pattern having a plurality of parallel strip-shaped shielding regions 111a and light transmitting regions 111b in the vertical direction. The pitch (P1) of the parallel shielding patterns of the image grading layer 110 can be designed in conjunction with the color filter layer 104. Preferably, the pitch (P1) of the parallel shielding patterns of the image sub-layer 110 is in the range of 2/3 to 1/2 ± about 10% of the total pitch (P2) of the color filter layer 104. That is, P1=(2/3xP2~1/2xP2)±10%. According to this configuration, the original image optical signal provided by the display panel 100 of the present invention can be used to display different images at different viewing angles by using the image grading layer 110 (ie, through a plurality of parallel strip-shaped transparent regions 111b). The user, for example, presents the dual views V1 and V2 to the driver and the next-door passenger respectively. After different designs, it can even present one image with two front views and two side views.

Furthermore, the polarizing element can be disposed at an appropriate position to deflect the polar light signal. As shown in FIG. 1 , the polarizing element may include a first polarizer 132 and a second polarizer 134 . The first polarizer 132 may be disposed outside the substrate below the display panel 110 , and the second polarizer 134 may be disposed on the phase difference device. Before 120, if it is disposed outside the image grading layer 110, the display image optical signals will be linearly polarized. This is well known to those skilled in the art and will not be described again. As shown in FIG. 1 for the sake of illustration, the phase difference 120 is spaced apart from the image separation layer 110 for convenience of understanding. The phase difference 120 can also be directly attached to the second polarizer 134 (or the image layer). 110) Outside.

After being applied by the image grading layer 110, a plurality of images of different viewing angles are presented to different users, for example, two images V1 and V2 are presented. At this time, the images V1 and V2 have only one phase and cannot form a stereoscopic image. . As shown in FIG. 2, taking the second video V2 as an example, the phase difference device 120 has a parallel phase pattern of a second direction, wherein the second direction is perpendicular to the first direction, so that the display image optical signals include a first One phase light L1 and one second phase light L2. For example, the phase difference device 120 may have a plurality of strip patterns parallel to the horizontal direction, including the first phase shift pattern 122a and the second phase shift pattern 122b, and the adjacent strip patterns are used to change the passing optical signal to Different phases, such as a phase difference of λ/2. That is, after the display image optical signal of the image grading layer 110 is applied by the phase difference device 120, the plurality of display image optical signals may include the first phase light L1 and the second phase light L2 of different phases. The display device 100 further includes an optical lens 200 for a user to wear. The optical lens 200 has a first phase lens 210 and a second phase lens 220, so that the first phase light L1 and the second phase light L2 are separated and transmitted to the left and right eyes of the user respectively, wherein the user wearing the optical lens 200 is used. The first phase light L1 and the second phase light L2 formed by one of the display image optical signals (for example, the image V2) are respectively viewed by the left and right eyes, and combined to form a stereoscopic image. Since the parallel directional pattern of the first direction of the image grading layer 110 and the parallel phase pattern of the second direction of the phase difference 120 are perpendicular to each other, the two are independent of each other, and the phase difference device 120 does not display the image optical signal after the grading. The light interference is generated, so that after the phase difference separation, the first phase light L1 and the second phase light L2 can still present a clear image.

That is, the phase difference device 120 functions to divide the transmitted light into polarized light in different directions in the upper and lower regions. If the plurality of display image optical signals obtained by the image separation layer 110 are three-dimensional images, the phase is transmitted. The function of the difference device 120, the light of different phases will generate different polarized images through the phase lenses of different partial polar states, and the images will be automatically combined into the body image in the user's brain. If the plurality of display image optical signals obtained by the image separation layer 110 are two-dimensional images, they are not affected by the phase difference 120. Further, the display panel 100 of the present invention can provide a composite display image as the original image light signal, wherein the composite display image can include a two-dimensional image light signal and a three-dimensional image light signal, or all of the three-dimensional image light signals. When applied to driving, the original image optical signal may include a driving information two-dimensional image optical signal for the driver to view, and a three-dimensional optical signal for the passenger next door. When the original image optical signal passes through the image grading layer 110, two display image optical signals of different viewing angles can be formed. When the two display image optical signals are applied by the phase difference device 120, the three-dimensional display image optical signals therein will include the first phase light L1 and the second phase light L2, and the passenger wears the corresponding optical lens 200. After that, you can watch stereoscopic movies. At the same time, the driver can also watch the required driving information while driving.

In another embodiment, as shown in FIG. 3, a touch panel 300 is further disposed on the surface of the entire display device structure, for example, on the phase difference device 120, for the user to input an instruction. For example, when a passenger needs to operate a watched movie or a driver needs to change driving information, he can input an instruction directly on the touch panel 300 without an additional remote controller. In addition, the touch panel 300 can be attached to the phase difference 120 in a manner of attaching, or can be integrated with the phase difference 120 according to design requirements.

It should be noted that, in the above embodiment, the phase difference device 120 is placed on the image imaging layer 110 (ie, after the optical path), but the setting of the phase difference device 120 is not limited thereto, and the second polarizer 134 is The position change according to the phase differencer 120 is set. Referring to FIG. 4, in another embodiment, the phase difference 120' is disposed between the display panel 100 and the image sub-layer 110. When operating, the display panel 100 provides the original image optical signal. After the phase difference device 120' is applied, the three-dimensional image signal is formed into the first phase optical signal and the second phase optical signal, and the two-dimensional signal is not affected. And then, by the function of the image grading layer 110, the first phase light and the second phase light of different images may be presented at different viewing angles, or the first phase light and the second phase light may be presented at one viewing angle, and the other phase The viewing angle presents a two-dimensional image.

Referring to FIG. 5, in another embodiment, the phase difference device 120" is integrated into the display panel 100, especially before being integrated in the color filter element 104. When operating, the display panel 100 provides the original image optical signal as already The image signal after the phase difference device 120" is applied, wherein the three-dimensional image signal is formed into the first phase light signal and the second phase light signal, and if there is a two-dimensional signal, it is not affected, and then passes through the image layer 110. The first phase light and the second phase light of different images may be presented at different viewing angles, or the first phase light and the second phase light may be presented at one viewing angle, and the two-dimensional image may be presented at another viewing angle.

In addition, in order to meet different user requirements, the color filter layer 104 can be designed to have the same (as shown in FIG. 1) or different sub-pitches (such as P21 and P22 in FIG. 6A) to adjust the intensity of the image optical signal. The intensity of the optical signal passing through the larger pitch is greater than the one passing through the pitch, as shown in FIG. 6B. For example, the pitch P2 of the color filter layer 104 of this embodiment can be designed to have a staggered arrangement of different sub-pitches (P21 and P22), for example, about 63.5 μm and 120 μm, and the parallel shielding patterns of the image sub-layer 110. The pitch P1 is about 127 μm, with a shielding area of 81 μm and a light transmission area of 46 μm. In conjunction with the design of the color filter layer 104 and the image sub-layer 110, the pitch P3 of the parallel phase pattern of the phase difference 120 (as shown in FIG. 2) may be 170 μm. In this way, the original image optical signal provided by the display panel 100 passes through the color filter layer 104 of different pitch sizes, and then passes through the organic layer 114 and the image grading layer 110, and the display image optical signals of different intensities and different angles are generated. For example, the dual vision can be presented to the driver and the next-door passenger respectively, and the display image light signal intensity viewed by the passenger is strong.

Furthermore, in this embodiment, the image grading layer 110 is formed to be bonded to the glass plate 112 and the organic layer 114 is bonded to the display panel 100. However, in other embodiments, the image grading layer can be integrated with the glass plate and the organic layer. The structure is omitted, for example, the organic layer is omitted, and thus is not limited to the embodiment.

Therefore, the image display device 10 of the present invention can display different images not only in multiple viewing angles, but also display two-dimensional/three-dimensional images according to the needs of the user, and can even display visual images with different intensities according to the application, thereby solving the problem of spatial configuration. And to meet the diverse needs of users.

Referring to FIG. 7, the present invention also provides a method for forming a display device, including providing a display panel to provide an original image optical signal (S710); forming an image separation layer above the display panel (S720). The image grading layer has a parallel shielding pattern in a first direction, wherein the image grading layer is configured to make the original image optical signal into a plurality of display image optical signals having different display angles; and forming a phase difference device (S730), the phase difference The device has a parallel phase pattern in a second direction, and the second direction is perpendicular to the first direction, and the display image optical signals include a first phase light and a second phase light.

Referring to FIG. 8, the present invention also provides a method for presenting a stereoscopic image, including providing a display panel to provide an original image optical signal (S810); forming an image grading layer above the display panel (S820), the image grading layer a parallel shielding pattern having a first direction, wherein the image grading layer is configured to make the original image optical signal into a plurality of display image optical signals having different display angles; forming a phase difference device (S830), the phase difference device having a second direction a parallel phase pattern, the second direction is perpendicular to the first direction, such that the display image optical signals include a first phase light and a second phase light; and an optical lens is provided for a user to wear (S840), The optical lens has a first phase lens and a second phase lens, wherein the user wearing the optical lens views the first phase light and the second phase light formed by one of the display image light signals. Combine into a stereo image.

In addition, in the above method, the step of forming a polarizing plate may be included, and as described above, the polarized image optical signal is used, and details are not described herein again.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention; all other equivalent changes or modifications which are not departing from the spirit of the present invention should be included in the following. Within the scope of the patent application.

10. . . Display device

100. . . Display panel

102. . . Pixel array component

104. . . Color filter layer

106. . . Liquid crystal layer

110. . . Image segmentation layer

111a. . . Shading area

111b. . . Light transmission area

112. . . glass plate

114. . . Organic layer

120. . . Phase difference

120’. . . Phase difference

120"...phase difference

122a. . . First phase shift pattern

122b. . . Second phase shift pattern

132. . . First polarizer

134. . . Second polarizer

200. . . Optical lenses

210. . . First phase lens

220. . . Second phase lens

300. . . Touch panel

1 is a schematic view of a display device according to an embodiment of the present invention; FIG. 2 is a schematic view showing the function of a display phase difference device according to an embodiment of the present invention; and FIG. 3 is a display device including a touch panel according to another embodiment of the present invention; Figure 4 is a schematic view of a display device according to another embodiment of the present invention; Figure 5 is a schematic view of a display device according to still another embodiment of the present invention; and Figures 6A and 6B show color filters of different pitches according to an embodiment of the present invention; FIG. 7 is a flow chart of a method for forming a display device according to an embodiment of the present invention; and FIG. 8 is a flow chart of a method for presenting a stereoscopic image according to an embodiment of the present invention.

10. . . Display device

100. . . Display panel

102. . . Pixel array component

104. . . Color filter layer

106. . . Liquid crystal layer

110. . . Image segmentation layer

111a. . . Shading area

111b. . . Light transmission area

112. . . glass plate

114. . . Organic layer

120. . . Phase difference

132. . . First polarizer

134. . . Second polarizer

Claims (18)

A stereoscopic image display device includes: a display panel providing an original image optical signal; and an image segmentation layer having a parallel shielding pattern in a first direction above the display panel, so that the original image optical signal becomes a display angle a plurality of display image optical signals; a polarizing element is disposed above the display panel for biasing the display image optical signals; and a phase difference device having a second direction parallel to one side of the polarizing element a phase pattern, wherein the second direction is perpendicular to the first direction, such that the display image optical signals comprise a first phase light and a second phase light, and wherein the polarizing element is disposed on the display panel and the phase difference device And at least one optical lens for at least one user to wear, the optical lens has a first phase lens and a second phase lens, wherein the user wearing the optical lens is viewed by the phase difference device The first phase light and the second phase light formed by one of the displayed image optical signals are combined to form a stereo image, wherein the image Image receiving layer, the polarizer, the phase difference is located between the optical lens and the faceplate of the display. The stereoscopic image display device of claim 1, wherein the display panel comprises a color filter layer having different pitches so that the intensity of the display image optical signals is different. The stereoscopic image display device of claim 1, further comprising a touch panel on the phase difference for the user to input an instruction. The stereoscopic image display device of claim 1, wherein the phase difference device is formed above the image segmentation layer. The stereoscopic image display device of claim 1, wherein the polarizing element comprises a photoimprinting layer formed above the image forming layer. The stereoscopic image display device of claim 1, wherein the phase difference device comprises integrated in the display panel. The stereoscopic image display device of claim 1, wherein the display panel comprises a liquid crystal panel or an organic light emitting diode panel. The stereoscopic image display device of claim 1, wherein the image degrading layer, the polarizing element, and the phase difference device are located on the same side as the at least one user with respect to the display panel. A method for presenting a stereoscopic image includes: providing a display panel to provide an original image optical signal; forming an image grading layer above the display panel, the image grading layer having a first direction parallel shielding pattern, wherein The image grading layer is configured to make the original image optical signal into a plurality of display image optical signals having different display angles; forming a polarizing element on the display panel for biasing the display image optical signals; forming a phase a phase difference device having a parallel phase pattern in a second direction, the second direction being perpendicular to the first direction, such that the display image optical signals comprise a first phase light and a second phase light; At least one optical lens is worn by at least one user, the optical lens has a first phase lens and a second phase lens, wherein the user wearing the optical lens views the pixels displayed by the phase difference device The first phase light and the second phase light formed by one of the image optical signals are combined to form a stereo image, wherein the image imaging layer The polarizer, the phase difference is located between the optical lens and the panel of the display. A display device is provided for at least one user, including: a display panel, providing an original image optical signal; An image grading layer has a parallel shielding pattern in a first direction above the display panel, such that the original image optical signal becomes a plurality of display image optical signals having different display angles; and a polarizing element is disposed above the display panel And a phase difference device having a second direction parallel phase pattern on one side of the polarizing element, wherein the second direction is perpendicular to the first direction, such that The display image optical signals displayed by the phase difference device include a first phase light and a second phase light being presented to the at least one user, and wherein the polarizing element is between the display panel and the phase difference device, and The phase difference device is between the display panel and the at least one user, wherein the image imaging layer, the polarizing element, and the phase difference device are located between the display panel and the user. The display device of claim 10, wherein the display panel comprises a color filter layer having different pitches to make the intensity of the display image optical signals different. The display device of claim 10, further comprising a touch panel on the phase difference for the user to input an instruction. The display device of claim 10, wherein the phase difference device comprises Formed above the image segmentation layer. The display device of claim 10, wherein the polarizing element comprises a photoimaging layer formed above the image. The display device of claim 10, wherein the phase difference device comprises an integrated display panel. The display device of claim 10, wherein the display panel comprises a liquid crystal panel or an organic light emitting diode panel. The display device of claim 10, wherein the image degrading layer, the polarizing element, and the phase difference device are located on the same side as the at least one user with respect to the display panel. A method for forming a display device is applicable to at least one user, the method comprising: providing a display panel to provide an original image optical signal; forming an image grading layer above the display panel, the image grading layer having a a parallel shielding pattern of the first direction, wherein the image grading layer is configured to make the original image optical signal into a plurality of display image optical signals having different display angles; forming a polarizing element above the display panel for biasing the image some Displaying an image optical signal; and forming a phase difference device having a parallel phase pattern of a second direction, the second direction being perpendicular to the first direction, such that the display images displayed by the phase difference device The optical signal includes a first phase light and a second phase light that are presented to the at least one user, wherein the image imaging layer, the polarizing element, and the phase difference device are located between the display panel and the user.