TWI684793B - Display device - Google Patents

Abstract

A display device includes a display panel and a lens unit. The display panel has a plurality of sub-pixels arranged in an array-type. These sub-pixels have a long side direction and a short side direction. The lens unit is disposed on the display panel. The lens unit includes a plurality of lenticular lens disposed side by side. A long axis direction of these lenticular lens and the long side direction of these sub-pixels clips a default angle, and the default angle is 30 degrees to 30.5 degrees. Moreover, a width of these lenticular lens at the short side direction is the same as the sum of the widths of seven sub pixels at the short side direction.

Description

Display device

This case is about display technology, especially a display device that can provide two-dimensional images and three-dimensional images at the same time.

With the development of new display technologies, from the early black and white monitors and color monitors to the current high-quality, thin and light monitors, it means that people continue to pursue a more realistic and natural visual experience. In order to meet the demand for more realistic vision, the display technology has gradually evolved from two-dimensional display to three-dimensional display technology to provide stereoscopic visual experience in addition to general images and colors.

The three-dimensional display technology can be roughly divided into two types: stereoscopic display technology and auto-stereoscopic display technology. In recent years, the naked-eye display technology has been the main development object. Moreover, according to the feeding method of the image, the naked-eye display technology can be further divided into time multiplex (time multiplex) and spatial multiplex (spatial multiplex).

Generally speaking, the spatial multiplexing method can interpolate at least two image data of different viewing angles in multiple sub-pixels of the display device, so that the viewer can see the three-dimensional images of the corresponding viewing angles in each specific viewing area. Three-dimensional naked-eye display with multiple viewing angles. However, the more the viewing angle provided by the display device when displaying the three-dimensional image, the more severe the decrease in the resolution of the display device. Moreover, such a decrease in resolution also affects the image clarity of the display device when displaying two-dimensional images.

In one embodiment, a display device includes a display panel and a lens unit. The display panel has a plurality of sub-pixels arranged in an array. These sub-pixels have a long-side direction and a short-side direction. The lens unit is provided on the display panel. The lens unit includes a plurality of lenticular lenses arranged side by side. The long axis direction of the lenticular lenses and the long side direction of the sub-pixels are at a predetermined angle. The preset angle is 30 degrees to 30.5 degrees, and the width of these lenticular lenses in the short-side direction is equal to the sum of the widths of the seven sub-pixels in the short-side direction.

In summary, the display device according to the embodiment of the present invention has a specific preset angle formed between the long axis direction of the lenticular lens and the long side direction of the sub-pixel, and the width of the upper lenticular lens in the short side direction The specific ratio between the width of the sub-pixels allows the viewer to obtain a good visual experience when displaying two-dimensional images and/or three-dimensional images.

The detailed features and advantages of this case are described in detail in the following embodiments. The content is sufficient for any person skilled in the relevant art to understand and implement the technical content of this case, and according to the contents disclosed in this specification, the scope of patent application and the drawings, any Those skilled in the relevant art can easily understand the purpose and advantages related to this case.

FIG. 1 is an exploded schematic view of an embodiment of a display device, and FIG. 2 is a plan view of a configuration relationship between a display panel and a lens unit. Referring to FIGS. 1 and 2, the display device 100 includes a display panel 110 and a lens unit 120. The lens unit 120 is superposed on the display panel 110.

The display panel 110 has a plurality of sub-pixels 111 arranged in an array. These sub-pixels 111 are used to output light beams according to the received image information, so that the display device 100 can display corresponding images for viewers to view. Here, each sub-pixel 111 has a long side direction D1 and a short side direction D2, and the long side direction D1 and the short side direction D2 are substantially perpendicular to each other.

In some embodiments, the display panel 110 may be any suitable display, such as a liquid crystal display (LCD), an organic light emitting diode display (OLED), an electroluminescence display (ELD), and the like.

The lens unit 120 has a focusing function, and can be used to adjust the angle of the light beam output by each sub-pixel 111 of the display panel 110. The lens unit 120 has a cylindrical surface 120A and a smooth surface 120B with respect to the cylindrical surface 120A. In this embodiment, the lens unit 120 is disposed with its smooth surface 120B facing the display panel 110.

The lens unit 120 includes several lenticular lenses 121 arranged side by side. Each lenticular lens 121 has a curved surface 121A and a flat surface 121B with respect to the curved surface 121A. Here, the cylindrical surface 120A of the lens unit 120 is formed by connecting the curved surfaces 121A of the cylindrical lenses 121, and the smooth surface 120B of the lens unit 120 is formed by connecting the flat surfaces 121B of the cylindrical lenses 121.

Each lenticular lens 121 has a long axis direction V1. Here, when the lens unit 120 is superposed on the display panel 110, a predetermined angle θ that is not zero may be interposed between the long axis direction V1 of the lenticular lens 121 and the long side direction D1 of the sub-pixel 111. Moreover, the width W1 of the lenticular lens 121 in the short-side direction D2 of the sub-pixel 111 at this time is approximately equal to the sum of the widths W2 of the seven sub-pixels 111 in the short-side direction D2.

In some embodiments, the preset angle θ may be 30 degrees to 30.5 degrees, so that when the display device 100 displays two-dimensional images and three-dimensional images at the same time, the display device 100 can have good optical performance, and the viewer can Clearly understand the contents of the two-dimensional image and the three-dimensional image displayed by the display device 100 at the same time. Among them, when the preset angle θ is tan ^-1 (7/12) degrees, the optical crosstalk of the display device 100 is smaller and has a better optical performance.

In some embodiments, the curved surface 121A of the cylindrical lens 121 may be a smooth curved surface, but this case is not limited to this. In other embodiments, the curved surface 121A of the lenticular lens 121 may also have a corner, so that the cylindrical surface 120A of the lens unit 120 may exhibit a zigzag shape.

In some embodiments, the lens unit 120 may be made of a material with good optical properties, for example, a light-transmitting material such as plexiglass (PPMA), polycarbonate (PC), polyethylene (PE), or glass.

In one embodiment, the display device 100 may further include an adhesive layer (not shown) disposed between the display panel 110 and the lens unit 120 so that the lens unit 120 can be laminated on the display panel 110 through the adhesion. In some embodiments, the adhesive layer may be optical resin (OCR), liquid optical transparent adhesive (LOCA), optical transparent adhesive (OCA), pressure sensitive adhesive (PSA), or other suitable adhesives having light transmittance. However, this case is not limited to this. In another embodiment, the lens unit 120 may also be directly disposed on the display panel 110. For example, the lens unit 120 can be stacked on the display panel 110 in a hanging manner.

FIG. 3 is a schematic diagram of the display area of the display device. Please refer to FIG. 1 to FIG. 3, the display device 100 can simultaneously display 3D images and 2D images. In some embodiments, the display device 100 may include at least two display areas for displaying three-dimensional images and two-dimensional images (hereinafter referred to as first display area A1 and second display area A2, respectively). Here, the first display area A1 is mainly used to display three-dimensional images, and the second display area A2 is mainly used to display two-dimensional images.

In addition, the display device 100 may further include an image configuration unit 130. The image configuration unit 130 is coupled to the display panel 110 and is used to receive and configure 3D image information and 2D image information. Here, the image configuration unit 130 can configure the three-dimensional image information to the first display area A1 and the two-dimensional image information to the second display area A2, so that the plurality of sub-pixels 111 located in the first display area A1 can be based on The received 3D image information displays the corresponding 3D image, and the plurality of sub-pixels 111 located in the second display area A2 can also display the corresponding 2D image according to the received 2D image information. In this way, the viewer can simultaneously view the 3D image and the 2D image from the screen displayed by the display device 100. However, this case is not limited to this. In another embodiment, the display device 100 may display only three-dimensional images.

For example, when the image configuration unit 130 only receives 3D image information, the image configuration unit 130 can configure the received 3D image information to all display areas of the display panel 110 (ie, the first display area A1 and the second display area A2) , So that all the sub-pixels 111 of the display panel 110 can display the corresponding 3D image to the viewer according to the received 3D image information.

In one embodiment, the display device 100 can provide three-dimensional images with multiple viewing angles. In some embodiments, the display device 100 can provide a three-dimensional image with twenty-eight perspectives. Therefore, the three-dimensional image information may include a plurality of image data 1 to 28 of 28 angles of view, and the image arrangement unit 130 may convert the plurality of image data of 28 angles of view 1 along the long axis direction V1 of the lenticular lens 121. ~28 are sequentially arranged to the sub-pixels 111 of the display panel 110, so that the viewer can see the three-dimensional image of the corresponding viewing angle when viewing the display device 100 in 28 specific viewing areas.

In some embodiments, the plurality of sub-pixels 111 of the display panel 110 may be divided into multiple groups of repeating units P1, and each group of repeating units P1 is composed of twenty-eight adjacent sub-pixels 111. Here, the short-side direction D2 of the sub-pixels 111 is taken as the direction of the horizontal row, and each group of repeating units P1 is divided in such a manner that every four horizontal rows and each row covers seven sub-pixels 111. In other words, each group of repeating units P1 has four horizontal rows and seven straight rows, and the direction of the straight rows is the long-side direction D1 of the sub-pixel 111. Here, the first horizontal row to the fourth horizontal row are sequentially arranged from top to bottom, and the first straight row to the seventh straight row are respectively arranged from left to right.

In some embodiments, when the image configuration unit 130 arranges the image data of each group of repeating units P1, it sequentially arranges the first horizontal row to the fourth horizontal row of each group of repeating units P1 along the long axis direction V1. One of the sub-pixels 111 configures image data 1~28 with 28 perspectives. In other words, the twenty-eight sub-pixels 111 of each group of repeating units P1 can be allocated to the image data 1 to 28 of one of the twenty-eight perspectives, respectively.

For example, the image configuration unit 130 may configure the image data 1 of the first perspective to a certain sub-pixel 111 in the first horizontal row, and configure the image data 2 of the second perspective along the long axis direction V1 To a certain sub-pixel 111 in the second horizontal row, arrange the image data 3 of the third viewing angle to a certain sub-pixel 111 in the third horizontal row, and arrange the image data 4 of the fourth viewing angle to the One of the sub-pixels 111 in the four horizontal rows. After that, the image configuration unit 130 starts from the first horizontal row, and arranges the image data 5 from the fifth angle of view to the image data 8 from the eighth angle of view into the first horizontal row to the fourth horizontal row respectively according to the foregoing configuration method. One sub-pixel 111. Similarly, the image data 9 of the ninth angle of view to the image data 12 of the twelfth angle of view are also arranged according to the foregoing arrangement from the first row, and so on to the image data 28 of the 28th angle of view.

In some implementations, the sub-pixels 111 arranged in the image data 1 of the first perspective to the sub-pixels 111 arranged in the image data 28 of the 28th perspective are sequentially separated by a row . For example, when the image arrangement unit 130 arranges the image data 1 of the first angle to the sub-pixel 111 located at the intersection of the first horizontal row and the first line, the image data 2 of the second angle will be arranged to the image data 2 of the second angle The sub-pixel 111 at the intersection of the second horizontal row and the third vertical row, and the image data 3 of the third viewing angle will be arranged to the sub-pixel 111 at the intersection of the third horizontal row and the fifth vertical row, and the fourth viewing angle The image data 4 of will be allocated to the sub-pixel 111 located at the intersection of the fourth horizontal row and the seventh vertical row. Moreover, since the sub-pixel 111 of the image data 4 allocated to the fourth view angle is located in the last row of these vertical rows, the image placement unit 130 will push back to the second vertical row and shift the fifth perspective The image data 5 of is arranged to the sub-pixel 111 located at the intersection of the first horizontal row and the second vertical row. Next, the image data 6 of the sixth angle of view is arranged to the sub-pixel 111 located at the intersection of the second horizontal row and the fourth vertical line, and the image data 7 of the seventh angle of view is arranged to the third horizontal row. The sub-pixel 111 at the intersection of the sixth straight row, and the image data 8 of the eighth angle of view is pushed back to the sub-pixel 111 located at the intersection of the fourth horizontal row and the first straight row. And so on to the image data 28 of the 28th perspective. Here, the arrangement correspondence between each group of repeating units P1 and the image data of twenty-eight perspectives can be roughly as shown in FIG. 2.

In some embodiments, the image configuration unit 130 can be implemented by image processing wafers. In addition, the image configuration unit 130 can be integrated with the driving circuit of the display panel 110 in a single chip.

4 is an optical schematic diagram of an embodiment in which a display device displays a two-dimensional image under a preset angle of tan ^-1 (7/12), and FIG. 5 is a display device at a preset angle of tan ^-1 (7/12) Below is an optical schematic diagram showing an embodiment of a three-dimensional image, FIG. 6 is an optical schematic diagram of an embodiment showing a two-dimensional image under a preset angle of tan ^-1 (1/6), and FIG. 7 is a display An optical schematic diagram of an embodiment in which the device displays a three-dimensional image at a preset angle of tan ^-1 (1/6). Please refer to FIG. 4 to FIG. 7. Generally speaking, the level of the resolution at this time can be known according to the size of the area enclosed by the dotted line in the figure, where the smaller the area enclosed, the higher the resolution. Here, comparing FIG. 4 with FIG. 5, it can be seen that when the display device 100 displays a two-dimensional image and displays a three-dimensional image at a preset angle θ of tan ^-1 (7/12), the resolutions thereof are different. Moreover, it can be seen that the area enclosed by the dashed line in FIG. 4 is relatively small and smaller than the area enclosed by the dashed line in FIG. 6. Therefore, when the display device 100 displays a two-dimensional image under a preset angle θ of tan ^-1 (7/12), its resolution is quite high, and is higher than that of the display device 100 at a preset angle θ of tan ^-1 (1/6) The resolution when displaying 2D images. In addition, although the area enclosed by the dashed line in FIG. 5 is slightly larger than the area enclosed by the dashed line in FIG. 7, since the area difference of the areas is not large, the display device 100 at the preset angle θ is tan ^-1 (7 /12) The resolution when displaying the three-dimensional image will not drop too much, and the three-dimensional image displayed by the display device 100 at this time is still clear to the viewer without blurring.

8 is an optical schematic diagram of an embodiment in which the display device displays a three-dimensional image under a preset angle of tan ^-1 (5/12), and FIG. 9 is a view of the display device at a preset angle of tan ^-1 (6/12) The optical schematic diagram of an embodiment of a three-dimensional image is shown below. FIG. 10 is an optical schematic diagram of an embodiment of a three-dimensional image displayed by a display device at a preset angle of tan ^-1 (7/12). FIG. An optical schematic diagram showing an embodiment of displaying a three-dimensional image under an angle of tan ^-1 (8/12). FIG. 12 is an implementation of displaying a three-dimensional image under a preset angle of tan ^-1 (9/12). 13 is an optical schematic diagram of an example, and FIG. 13 is an optical schematic diagram of an embodiment in which a display device displays a three-dimensional image under a preset angle of tan ^-1 (10/12). Please refer to FIG. 8 to FIG. 13. Here, the display device 100 using red, green, and/or blue for color display is taken as an example. As shown in FIGS. 9 and 12, when the display device 100 displays a three-dimensional image under a preset angle θ of tan ^-1 (6/12) and a preset angle θ of tan ^-1 (9/12), Only one color can be viewed under a single viewing angle, so its optical performance is not good. As shown in FIGS. 11 and 13, when the display device 100 displays a three-dimensional image under a preset angle θ of tan ^-1 (8/12) and a preset angle θ of tan ^-1 (10/12), The 3D image will be blurred due to the large optical crosstalk between the viewing angles, so its optical performance is not very good. As shown in FIGS. 8 and 10, although the display device 100 does not perform poorly when displaying a three-dimensional image at a preset angle θ of tan ^-1 (5/12), the display device 100 at a preset angle θ is tan The optical performance of displaying a three-dimensional image under ^-1 (7/12) is more excellent than that when the display device 100 displays a three-dimensional image under a preset angle θ of tan ^-1 (5/12).

In some embodiments, the lens unit 120 is non-rotatable. In other words, the preset angle θ sandwiched between the long axis direction V1 of the lenticular lens 121 and the long side direction D1 of the sub-pixel 111 does not change. Therefore, the display device 100 can avoid the installation of the 2D/3D conversion circuit, thereby reducing the cost.

In some implementations, when the display device 100 displays a two-dimensional image, its resolution is half of the resolution when displaying a three-dimensional image.

In some implementations, the content of the two-dimensional image can mainly be text, symbols, etc., which are not required to be displayed in the three-dimensional image.

In some embodiments, the display device 100 can be applied to advertising billboards, audio-visual appliances, game entertainment display equipment, laptops, mobile phones, tablets, and so on.

In summary, the display device according to the embodiment of the present invention has a specific preset angle formed between the long axis direction of the lenticular lens and the long side direction of the sub-pixel, and the width of the upper lenticular lens in the short side direction The specific ratio between the width of the sub-pixels allows the viewer to obtain a good visual experience when displaying two-dimensional images and/or three-dimensional images.

Although the technical content of the case has been disclosed as above with preferred embodiments, it is not intended to limit the case. Anyone who is familiar with this skill should make some changes and retouching without departing from the spirit of the case. Therefore, the scope of protection in this case shall be subject to the scope defined in the attached patent application.

100‧‧‧Display device 110‧‧‧Display panel 111‧‧‧Sub-pixel 120‧‧‧Lens unit 120A‧‧‧Cylinder 120B‧‧‧Smooth surface 121‧‧‧Cylinder lens 121A‧‧‧Curved 121B‧‧‧Plane 130‧‧‧Image configuration unit 1~28‧‧‧Image data A1‧‧‧First display area A2‧‧‧Second display area D1‧‧‧Long side direction D2‧‧‧Short side direction P1‧‧‧Repeat unit V1‧‧‧Long axis direction W1‧‧‧Width W2‧‧‧Width θ‧‧‧Angle

FIG. 1 is an explosion schematic diagram of an embodiment of a display device. FIG. 2 is a plan view showing the arrangement relationship between the display panel and the lens unit. FIG. 3 is a schematic diagram of the display area of the display device. 4 is an optical schematic diagram of an embodiment of a display device displaying a two-dimensional image under a preset angle of tan ^-1 (7/12). 5 is an optical schematic diagram of an embodiment of a display device displaying a three-dimensional image under a preset angle of tan ^-1 (7/12). 6 is an optical schematic diagram of an embodiment of a display device displaying a two-dimensional image under a preset angle of tan ^-1 (1/6). 7 is an optical schematic diagram of an embodiment of a display device displaying a three-dimensional image under a preset angle of tan ^-1 (1/6). 8 is an optical schematic diagram of an embodiment of a display device displaying a three-dimensional image under a preset angle of tan ^-1 (5/12). 9 is an optical schematic diagram of an embodiment of a display device displaying a three-dimensional image under a preset angle of tan ^-1 (6/12). 10 is an optical schematic diagram of an embodiment of a display device displaying a three-dimensional image under a preset angle of tan ^-1 (7/12). 11 is an optical schematic diagram of an embodiment of a display device displaying a three-dimensional image under a preset angle of tan ^-1 (8/12). 12 is an optical schematic diagram of an embodiment of a display device displaying a three-dimensional image under a preset angle of tan ^-1 (9/12). 13 is an optical schematic diagram of an embodiment of a display device displaying a three-dimensional image under a preset angle of tan ^-1 (10/12).

100‧‧‧Display device

110‧‧‧Display panel

111‧‧‧ Subpixel

120‧‧‧lens unit

121‧‧‧Cylinder lens

1~28‧‧‧Image data

D1‧‧‧long direction

D2‧‧‧Short side direction

P1‧‧‧Repeat unit

V1‧‧‧ Long axis direction

W1‧‧‧Width

W2‧‧‧Width

θ‧‧‧angle

Claims (5)

A display device includes: a display panel having a plurality of sub-pixels arranged in an array, the sub-pixels having a long-side direction and a short-side direction; and a lens unit disposed on the display panel, the lens unit It includes a plurality of lenticular lenses arranged side by side, the long axis direction of the lenticular lenses and the long side direction of the sub-pixels are at a preset angle, the preset angle is 30 degrees to 30.5 degrees, and the posts The width of the lens in the short-side direction is equal to the sum of the widths of the seven sub-pixels in the short-side direction. The display device according to claim 1, wherein the preset angle is tan ^-1 (7/12) degrees. The display device according to claim 1, wherein the display device simultaneously displays a three-dimensional image on a first display area and a two-dimensional image on a second display area. The display device according to claim 3, further comprising: an image configuration unit that receives a three-dimensional image information and a two-dimensional image information, wherein the sub-pixels located in the first display area are displayed according to the three-dimensional image information In the three-dimensional image, the sub-pixels located in the second display area display the two-dimensional image according to the two-dimensional image information. The display device according to claim 4, wherein the three-dimensional image information includes a plurality of image data of 28 angles of view, and the image arrangement unit sequentially arranges the two along the long axis direction of the cylindrical lenses The image data of the eighteen angles to the sub-pixels.

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