TW201413294A - Anti-banding layer for autostereoscopic display - Google Patents

Abstract

An autostereoscopic display (140) is provided comprising (i) a display panel (142) providing a display output composed of pixels in an array and (ii) an optical stack (150) arranged at a display side of the display panel. The optical stack comprises a lenticular means (170) and an anti-banding layer (190). The lenticular means (170) comprises a profiled surface, the profiled surface defining an array of lenticular elements for directing the outputs from respective groups of said pixels in mutually different directions so as to enable a stereoscopic image to be perceived. The anti-banding layer (190) is arranged for effecting a variation in the refraction of light along a periphery (176, 177) of each lenticular element (170). The above optical stack (150) can reduce repeating patterns in autostereoscopic displays and/or the visibility of such repeating patterns to the viewer.

Description

Anti-strip layer for autostereoscopic display

The present invention relates to an autostereoscopic display comprising: a display panel for providing a display output composed of one pixel in an array; and an optical stack including a convex portion disposed at a display side of one of the display panels Mirror member. The invention is also directed to such optical stacks. The invention further relates to an electronic device including such an autostereoscopic display. The invention also relates to a method of making such an autostereoscopic display.

Since 3D displays (and in particular televisions equipped with 3D displays) provide stereoscopic depth perception to a viewer, they are becoming increasingly popular among consumers. So-called autostereoscopic displays provide this stereoscopic depth perception without the need for a viewer to wear polarized or shutter-based glasses. To this end, optical components (such as a convex mirror lens array (or, in general, a convex mirror-like member)) are used, which enable the display to emit a cone from each given point on the 3D display, the cone comprising At least one left view and one right view of a scene. This allows the viewer to see a different image with each eye when the viewer is positioned within the cone accordingly. Some autostereoscopic displays, sometimes referred to as automatic multiscopic displays, provide multiple views of the same scene rather than just one left view and one right view. This allows the viewer to take a stereoscopic perception of one of the scenes while taking multiple positions in the cone (ie, moving left and right in front of the display).

Examples of such autostereoscopic displays are described by C. van Berkel et al., published in the SPIE meeting record, Vol. 2653, pp. 32-39, 1996, and GB-A-2196166. The title of the book is "Multiview 3D-LCD". In these examples, the autostereoscopic display includes a matrix LC (liquid crystal) display panel having a plurality of columns of pixels and a plurality of rows of pixels (display elements) and acting as a spatial light modulator to modulate a light source through it. Light. The display panel can be of a type used in other display applications, such as a computer display screen for presenting information in two dimensions. (for example) a convex mirror-like sheet in the form of a molded or processed sheet of polymeric material having its convex-like elements overlying the output side of the display panel, the convex mirror-like elements including extending in the row direction ( A semi-cylindrical lens element, wherein each convex mirror element is associated with a respective one of two or more adjacent rows of display elements and extends in a plane extending parallel to the display element rows. In one configuration in which each lenticule is associated with two rows of display elements, the display panel is driven to display a composite image of two 2D sub-images including vertically interlaced, wherein the alternating rows of display elements display two images, And the display elements in each row provide one vertical segment of the respective 2D (sub)image. The convex mirror-like sheet guides the two segments and the corresponding segments from the display element rows associated with the other lenslets to the left and right eyes of one of the viewers in front of the sheet, so that the sub-image has an appropriate binocular image In the worst case, the viewer perceives a single stereo image. A display element in which each lenslet is associated with a group of two or more adjacent display elements in a column direction and corresponding rows in each group are suitably configured to be provided from a respective 2-D (sub)image In other multi-view configurations of a vertical segment, as a viewer's head moves, a series of consecutive, different stereoscopic views are perceived for generating, for example, a look-around impression.

In view of the fact that the convex mirror-like elements need to be accurately aligned with the display pixels, the convex mirror-like screen is usually mounted on the display panel in a permanent manner such that the position of the convex mirror-like elements is fixed relative to the pixel array.

The above types of autostereoscopic displays can be used, for example, in a variety of applications in home or portable entertainment, medical imaging, and computer-aided design (CAD).

The autostereoscopic display is preferably designed in such a way that it is automatically viewed by the viewer. In the case of a body display, the structure of the pixels combined with the structure of the convex mirror-like members and/or other optical elements does not cause the viewer to clearly notice (repeated) the pattern.

An example of this pattern is the so-called striping effect. The strip effect is caused at least in part by the convex mirror-like member in the following manner. Because the sub-pixels (and therefore the pixels) of the display panel are not completely adjacent, there is an area between the sub-pixels that does not emit or hardly emit any light. This area is called a black matrix or (several) guard strips. If a viewer moves along an autostereoscopic display, the different sub-pixels are visible and together form a view. However, the guard strip between the sub-pixels is then seen in an alternating manner, which causes the strip effect. Intuitively, a strip can be understood as a moiré effect of a grid formed by a guard strip and an interaction between a grid formed by a convex mirror member.

The present inventors have appreciated that current designs and solutions for autostereoscopic displays are still unsatisfactory because users often can clearly notice patterns when viewing autostereoscopic displays (such as by the strip effect mentioned above) The pattern caused).

It is an object of the present invention to reduce such apparent patterns in auto-stereoscopic displays and/or to reduce the visibility of such apparent patterns to viewers.

A first aspect of the present invention provides an autostereoscopic display comprising: i) a display panel providing display output from one of an array of pixels and ii) an optical stack disposed on one of the display panels At the display side, the optical stack includes: a convex mirror-like member including a contoured surface defining an array of convex mirror elements for use in mutually different directions Directing the outputs from respective groups of pixels to enable sensing of a stereoscopic image; and - an anti-strip layer configured to effect a photorefractive change along a perimeter of each of the convex mirror elements .

Embodiments are defined in the subsidiary technical solutions.

An optical stack according to a first aspect of the invention comprises a convex mirror member, such as A convex mirror-like member known per se from the field of autostereoscopic displays. In accordance with the present invention, an optical stack includes an anti-strip layer that implements a photorefractive variation along one of the perimeters of each of the convex mirror elements. Therefore, the light guided (re) by the convex mirror element is refracted differently along the periphery of the convex mirror element. This variation in refraction along the perimeter of each convex mirror element has been found to make the apparent pattern, such as that caused by the strip effect, less visible to a viewer. Advantageously, the autostereoscopic display provides a better image quality to the viewer.

In an embodiment, the strip layer is disposed on the contoured surface of the convex mirror member, the strip layer comprises a main layer and is used for adhering the strip layer to the contoured surface. An adhesive layer, and the strip layer is disposed on the contoured surface in such a manner that the adhesive layer avoids the convex mirror elements while adhering to one of the protruding portions of the convex mirror-like members A recess between adjacent ones of the members to form a gap between the adjacent ones of the convex mirror elements and the strip layer.

Therefore, the strip layer is intermittently attached to the convex mirror member, that is, by adhering to the protruding portion of each of the convex mirror members while avoiding the neighboring of the bound convex member The (several) part of the depression. The intermittent attachment provides: a first type of refraction at the interface between the strip layer and the convex mirror element, wherein the first type of refraction is determined by the refractive index of the convex mirror element and the strip layer; and the convex mirror A second type of refraction at the interface between the element and the gap, wherein the second type of refraction is determined by the refractive index of the convex mirror element and the medium (eg, air) inside the gap. This embodiment provides an efficient way to achieve a change in light refraction along the perimeter of each convex mirror element, i.e., by the manner in which the strip layer is intermittently attached to the convex mirror member. Therefore, it is not necessary to modify the optical properties of the strip layer itself to achieve this light refraction variation.

A further advantage is that this type of intermittent attachment can be conveniently achieved by pressing the strip layer against the convex mirror-like member using a pressing surface, since the strip layer is first attached to each convex after this pressing The protruding part of the mirror element. The pressing force used to press the strip layer against the convex mirror member by controlling the pressing surface (for example, by pressing the pressure) The force is limited to a maximum value to create and/or maintain a gap between the strip layer and the convex mirror member.

In a further embodiment, the stripe layer is configured to effect light refraction by circumventing a first portion of each of the convex mirror elements while avoiding a second portion of each of the convex mirror elements change. This embodiment also establishes an intermittent attachment of the strip layer to one of the convex mirror elements, thereby providing an effective means of effecting light refraction variation along the periphery of each of the convex mirror elements.

In a further embodiment, the first portion is centered on one of the optical axes of each of the convex mirror elements and the second portion is attached to a peripheral portion at one of the sides of the central portion. The central portion of each convex mirror element is usually the most prominent portion of the convex mirror element. Therefore, intermittent attachment can be conveniently achieved by pressing the strip layer onto the convex mirror member with a pressing surface.

In a further embodiment, the stripe layer is configured to effect a change in light refraction based on at least one of: a change in one of the materials of the strip layer, a change in thickness of the strip layer, The strip layer is locally deformed and mechanical stress is applied locally to the strip layer. In addition to or in addition to providing an intermittent attachment of the strip layer to one of the convex mirror members, the strip layer itself may be adapted to establish a light refractive variation. The foregoing configuration is well suited to establish this light refraction variation.

In a further embodiment, the optical stack further includes a top layer disposed over the contoured surface to substantially avoid contact with the contoured surface, the top layer including one facing the display panel facing downward The surface of the strip layer is disposed on the downwardly facing surface of the top layer, and the strip layer comprises a primary layer and an adhesive layer for adhering the strip layer to the lower surface. This embodiment provides an alternative to including the strip layer in an autostereoscopic display by attaching the strip layer to a top layer of an autostereoscopic display (such as a protective top layer) rather than It is attached directly to the convex mirror member.

A further aspect of the present invention provides a method of attaching or applying an anti-strip layer to a convex mirror member, wherein the convex mirror member includes a contoured surface, wherein the contoured surface defines a convex mirror element An array of strips, wherein the strip layer comprises a primary layer and an adhesive layer for adhering the strip layer to the contoured surface, and wherein the method includes pressing the strip layer to the surface with a pressing surface The convex mirror member. Since the strip layer is initially attached to the protruding portion of each of the convex mirror elements while initially avoiding the recess between the adjacent members of the convex mirror element, the strip layer is pressed by a pressing surface A convenient method of intermittently attaching the strip layer to the convex mirror-like member is provided on the convex mirror-like member.

In an embodiment, the method further comprises: - pressing the strip layer having the adhesive layer onto the convex mirror member by the pressing surface; and - during the pressing, controlling a pressing pressure to At the recess in the contoured surface between adjacent ones of the convex mirror elements, a gap is created and/or maintained between the strip layer and the convex mirror member.

By controlling the pressing pressure, it is possible to avoid, for example, seamlessly applying the strip layer to the convex mirror-like member by discharging all the air between the convex-shaped member and the strip layer. This may occur if an excessive pressure is applied when the strip layer is applied to the convex mirror member by the pressing surface.

In a further embodiment, the strip layer is a flexible layer, and the method further comprises pressing the strip layer to the convex mirror using a substantially rigid (ie, non-deformable) pressing surface On the component. By using a non-deformable pressing surface, it is possible to avoid, for example, seamlessly applying a flexible strip layer to the convex mirror member due to the discharge of all air between the convex mirror member and the strip layer. .

0‧‧‧ view

1‧‧‧ view

2‧‧‧ view

3‧‧‧ view

4‧‧‧ view

5‧‧‧ view

102‧‧‧Repeating cone

104‧‧‧View cone/view series

106‧‧‧Repeating cone

110‧‧‧ Viewers

120‧‧‧Display Processor

122‧‧‧Image series/a series of images

140‧‧‧Auto Stereo Display

142‧‧‧Light generating part/display panel

150‧‧‧Optical stacking/convex-shaped members

152‧‧‧ Optical stacking

160‧‧‧ spacer/spacer layer

170‧‧‧ convex mirror member / convex mirror element

175‧‧‧The first part/center part of the convex mirror element

176‧‧‧ Another part of the convex mirror element / peripheral part / one of the convex mirror elements

177‧‧‧Another part of the convex mirror element / peripheral part / one of the convex mirror elements

178‧‧‧Optical center axis/optical axis

180‧‧‧Gap/air gap

182‧‧‧Gap/air gap

190‧‧‧Anti-stripe layer

192‧‧‧ main layer

194‧‧‧Adhesive/non-adhesive/contact layer

200‧‧‧ top layer

INS‧‧‧dredded rectangle

These and other aspects of the invention will be apparent from the description of the embodiments described herein. In the picture, 1 shows an autostereoscopic display for achieving stereoscopic viewing of a user without the need for glasses; FIG. 2a shows a cross-sectional view of one of the optical stacks of the autostereoscopic display, the optical stack including An anti-strip layer and a convex mirror-like member; FIG. 2b shows an enlarged view of one of the anti-strip layer and the convex mirror-like member; FIG. 3 shows one of the further optical stacks configurable on the light-generating portion of the auto-stereoscopic display. A cross-sectional view; and Figure 4 shows a convex mirror-like element and showing that the strip-preventing layer achieves a refractive index variation along the periphery of one of the convex-like elements.

It should be noted that articles having the same reference numerals in different figures have the same structural features and the same functions or the same signals. In the event that the function and/or structure of the article has been explained, the interpretation of the article is not necessarily repeated in the detailed description.

1 shows an autostereoscopic display 140 for enabling stereoscopic viewing of content displayed thereon without the user having to wear glasses. Autostereoscopic display 140 includes a light generating portion 142 that is typically comprised of an array of light emitting elements or light modulation elements. For example, the light generating portion 142 can be formed by a display panel known per se such as a liquid crystal display (LCD) panel or an organic light emitting display (OLED) panel. The autostereoscopic display 140 further includes an optical stack 150 that includes convex mirror-like members for redirecting light generated by the light generating portion 142 to different directions. The light generating portion 142 can be suitably configured and cooperate with the convex mirror member such that a series of, for example, views 0-5 are emitted from the autostereoscopic display 140 in the form of a viewing cone 104 and repeating viewing cones 102, 106.

1 further shows a display processor 120 coupled to the autostereoscopic display 140 for providing a series of images 122 to the autostereoscopic display 140. Autostereoscopic display 140 can be configured to transmit the image systems adjacently in the form of view series 0-5 Column 122. Thus, the viewer will perceive one of the image series 122 when viewing one of the view series 0-5. The image series 122 may correspond to one of the cameras facing one of the scenes included in the 3D image material and moving in front of the scene and from the left side to the right side relative to the scene. Thus, one of the two different views 0, 1 of the perceptual view series, positioned within the view cone 104, obtains a stereoscopic view of the scene.

It should be noted that the autostereoscopic display having the above configuration and the manner in which a series of images 122 are to be processed into the view series 104 are known per se. For example, US 6,064,424 discloses an autostereoscopic display device having one of the convex mirror-like sheets as one of the convex mirror-like members 150 and discussing the convex elements of the display element (ie, the light-emitting element or the light-modulating element) and the convex-like sheet. The relationship between.

In the following, reference to "on top", "upward" and the like is understood to mean a direction or surface of one of the layers facing away from the light generating portion 142 (ie toward a viewer). Moreover, reference to "under", "downward", and the like, is understood to mean a direction or surface facing one of the layers of the light generating portion 142.

2a shows a cross-sectional view of one of the optical stacks 150 that can be disposed on the light generating portion 142 of the autostereoscopic display 140. Optical stack 150 typically includes a spacer layer 160. The spacer layer 160 is an optically transparent layer for enabling light generated by the light generating portion 142 located under the spacer layer 160 to be substantially unobstructed (i.e., without substantially redirecting light or scattering light). In case) pass through the spacer layer. It should be noted that this spacer layer 160 is known per se and is generally used to separate the convex mirror member 170 from the light generating portion 142.

The optical stack 150 further includes a convex mirror member 170, wherein the convex mirror member 170 is disposed on top of the spacer layer 160 (ie, disposed on a side of the spacer layer 160 opposite to the light generating portion 142). Alternatively (but less common), the convex mirror member 170 may be disposed directly on top of the light generating portion 142. In this particular example, the convex mirror member 170 is constructed by including a convex mirror-like sheet that is one of the contoured surfaces facing upward, the contoured surface defining an array of convex mirror elements, the array of convex mirror elements being used in In a different direction from the pixels The respective groups direct the output to enable a stereoscopic image to be perceived. Additionally, in this particular example, the array is formed into a one-dimensional array by a series of cylindrical lens elements arranged in parallel. However, the convex mirror member 170 can also take any other suitable form, for example, it includes a plurality of multi-faceted lens elements, an array is a two-dimensional array, and the like. It should be noted that these convex mirror members 170 are known per se.

It should be noted that Figure 2a shows a cross-sectional view of one of the optical stacks selected to be substantially perpendicular to one of the lengths of the cylindrical elements. Thus, the cylindrical lens element is shown as being cross-section parallel to the base of the cylindrical lens element.

The optical stack 150 further includes an anti-strip layer 190 disposed on top of the convex mirror member 170 (i.e., disposed at a side of the convex mirror-like member facing away from the light generating portion 142). In the example of FIG. 2a, the strip layer 190 is formed by having a primary layer 192 of an adhesive layer 194. The adhesive layer 194 is disposed on a lower side of one of the main layers 192 (ie, one side of the main layer 192 facing the convex mirror-like member 170). The strip layer 190 is shown attached to the convex mirror member 170 at least in part using the adhesive nature of the adhesive layer 194. Figure 2a further shows that an anti-reflective (AR) coating has been applied to one of the anti-strip layers 190 facing the upper side (i.e., facing away from one side of the convex mirror-like member 170). This AR coating is optional.

2b shows an enlarged view of one of the strip layer 190 and the convex mirror member 170. This enlarged view is indicated in Figure 2a by a dashed rectangle INS. Thus, FIG. 2b shows a portion of the convex mirror member 170, the adhesive layer 194, and the primary layer 192. As can be seen in Figure 2b, the strip layer 190 is attached to the convex mirror member 170 in a manner that a gap 180 is formed between the convex mirror member 170 and the strip layer 190. In particular, the gap 180 is formed by a recess between two adjacent ones of the convex mirror-like elements and an anti-strip layer 190 covering the recesses to establish the gap 180. Although not visible in Figure 2b, it will be understood that if the convex mirror-like elements are elongate, the gap may extend along the elongate convex-like elements (i.e., may have a similar length). The gap 180 can also be described as follows. The convex mirror-like elements of the convex mirror-like member 170 form a "wave" pattern along the cross section shown in Figures 2a and 2b. The strip layer 190 is attached to the convex mirror member 170 On top of it, it is adhered to the convex mirror-like member 170 at the top of one of the "wave"-like patterns (i.e., at a protruding portion of each of the convex mirror-like members) and thus in contact with the convex mirror-like member 170. At the same time, the strip layer 190 is not adhered to the bottom of one of the "wave" patterns (ie, at the aforementioned recess between two adjacent convex mirror elements) to the convex mirror member 170 and thus does not interact with the convex mirror The member 170 is in contact. In other words, the adhesive layer 194 is partially adhered to each of the convex mirror-like elements only along one of the peripheral portions of the respective convex mirror-like elements and thus comes into contact with the respective convex mirror-like elements. Therefore, a gap 180 is formed in each of the convex mirror-like elements, and the adhesive layer is not attached to the other portion of the convex mirror-like element. In other words, it is contemplated that the convex mirror-like member 170 constitutes a plurality of straight parallel ridges and intermediate hollow portions, wherein the strip layer 190 covers the hollow portion while being attached to the ridges by the adhesive layer 194 to form a plurality of gaps 180 .

The gap 180 can be an air gap 180, i.e., filled with air. Air gap 180 may constitute an air pocket, wherein the term air pocket generally refers to, for example, air trapped between adjacent layers in a joining procedure. In general, such air pockets may be considered undesirable, i.e., it is desirable to reduce their occurrence. Here, however, the gap 180 is intentionally provided. The gap can also be filled with another medium, such as another gas, liquid, polymer, or the like.

In general, the adhesive layer 194 can be constructed from a deformable material (e.g., a deformable adhesive, a gel, or other material having adhesive properties). Thus, as also shown in Figure 2b, when the strip layer 190 is applied to the convex mirror member 170, the adhesive layer 194 can be deformed to some extent. This ensures seamless contact between the convex mirror member 170 and the strip layer 190 at the aforementioned contact portion. Adhesive layer 194 can include a delay in bonding the adhesive that can temporarily permit repositioning during application to correct for placement errors. Since the adhesive layer 194 is capable of passing light, it is substantially optically transparent. It should be noted that this applies to all other layers of the optical stack 150, ie the owner is optically transparent. It should be noted that the term optically transparent does not imply other optical properties. For example, although the adhesive layer 194 is optically transparent, the adhesive layer 194 may also be of a diffusing type because it can scatter light that passes through the adhesive layer 194.

It should be noted that in general, those skilled in the art can think of similar functionality. Instead of an adhesive layer 194, an alternative layer. For example, a substantially non-adhesive layer 194 can be provided that includes, for example, a deformable gel or other material that does not have substantially adhesive properties. The layer can be generally a contact layer 194, i.e., having an adhesive or non-adhesive nature. In one of the non-adhesive properties, the strip layer 190 can be mechanically (eg, on one side of the layer) or pressed through a transparent top layer disposed on top of the strip layer 190 The convex mirror member 170 is adhered to the convex mirror member 170.

The primary layer 192 can be constructed from a polymeric film or a solid substrate such as glass. The strip layer 190 (ie, the combination of the primary layer 192 and the adhesive layer 194) can be self-adhesive (viscous) protective film for, for example, covering and protecting a display screen, a window, a book cover, and the like. Composition. Another example is a polarizing foil or a polarizing layer as used in an LCD panel. Films of this type are commercially available in sheet or roll form. The self-adhesive protective film may comprise an adhesive layer composed of a water-based adhesive or an oil-based adhesive. The protective film may have a vinyl (PVC), a polyester, a polypropylene or the like. The strip layer 190 can also be formed from a portion of an optical stack of an LCD panel. For example, the convex mirror member 170 can be integrated between one of the color filter layers of the LCD panel and a polarizer layer, wherein, for example, the polarizer layer constitutes the strip layer 190. In general, the strip layer 190 can have a thickness below one millimeter (eg, on the order of 50 microns, 100 microns, or 200 microns). However, this is not a limitation since other thicknesses are also contemplated.

In the example of Figures 2a and 2b, the strip layer 190 can be constructed of a self-adhesive protective film having one of a thickness of about 200 microns.

The primary layer 192 can be a diffusion primary layer 192. Here, the term diffusion refers to optical transparency, but is configured to scatter light to some extent. Therefore, the light generated by the light generating portion 142 is scattered, thereby providing a viewer with an unclear impression of one of the images displayed on the autostereoscopic display 140. Alternatively, primary layer 192 can be a substantially non-diffused primary layer 192 (ie, avoiding such light scattering).

The strip layer 190 can be applied to the convex mirror member 170 as follows. In general, convex mirror Member 170 has been applied to light generating portion 142, for example, via spacer layer 160. This provides a stable basis upon which the strip layer 190 can be applied in a controlled manner. For example, the strip layer 190 can be applied to a display panel that has at least partially fabricated one of the autostereoscopic displays 140. Alternatively, the optical stack 150 can be pre-fabricated prior to applying the optical stack 150 to the light generating portion 142 (eg, an LCD panel). For example, the optical stack 150 can be produced in a procedure in which the stripe layer 190 is attached to the convex mirror member 170, wherein the optical stack 150 is applied to the light generating portion 142 only thereafter.

If the strip layer 190 is a flexible layer (ie, a film, such as a self-adhesive protective film), the strip layer 190 can be removed by utilizing a substantially rigid (ie, non-deformable) pressing surface. The strip layer 190 is applied by pressing onto the convex mirror member. The pressing surface can be a flat pressing surface and can be provided by, for example, rolling onto the strip layer 190 to press the strip layer 190 against a roll of the convex mirror member 170. The pressure can be controlled to ensure that a gap 180 of the aforementioned type is created between the strip layer 190 and the convex mirror member 170. Therefore, it is possible to prevent the strip layer 190 from being seamlessly applied to the convex mirror member 170 and thus avoiding, for example, all air between the convex mirror member 170 and the strip layer. This may occur if the pressing surface is deformable and/or an excessive pressure is applied when the strip layer 190 is applied. If the strip layer 190 is a rigid layer (such as the aforementioned solid glass substrate), the pressing surface may also be flexible or deformable.

3 shows a cross-sectional view of one of the further optical stacks 152 that can be disposed on the light generating portion 142 of the autostereoscopic display 140. Similar to the optical stack 150 of FIGS. 2a and 2b, the optical stack 152 of FIG. 3 includes a spacer layer 160 and a convex mirror member 170 disposed on top of the spacer layer 160. Optical stack 152 further includes a top layer 200. The top layer 200 is optically transparent and can be constructed to protect, for example, the convex mirror member 170 from damage to one of the protective layers. Moreover, since the strip layer 190 is applied to the top layer 200, the top layer 200 serves as a basis for the strip layer 190. In particular, an adhesive layer 194 is applied to one of the top layers 200 facing down, thereby attaching the entire strip layer 190 to the top layer 200. Top layer 200 is mechanically held at a distance from the convex mirror member 170 by, for example, mechanically adhering to the periphery of the convex mirror member 170 at a distance. Thus, a gap 182 is formed between the plurality or all of the convex mirror elements of the convex mirror member 170 and the strip layer 190. The gap 182 can be an air gap 182.

It should be noted that the convex mirror member 170 may be oriented such that the contoured surface faces away from the light generating portion 142 (i.e., in this case in Figures 2a, 2b, and 3). However, the convex mirror member 170 may also be oriented such that the contoured surface faces the light generating portion 142. It should be noted that autostereoscopic viewing functionality may also be provided in the context of one of the contoured surfaces facing the light generating portion 142, wherein one skilled in the art can provide a suitable optical stack including one of the convex mirror members 170. In this case, the strip layer 190 can be applied in a variety of ways. For example, the strip layer 190 can be attached to the spacer layer 160 such that the adhesive layer 194 of the strip layer 190 faces upward, and the convex mirror member 170 can be disposed on the strip layer at least in part using the adhesive properties of the adhesive layer 194. On 190 (where the contoured surface faces down). The contact between the strip layer 190 and the contoured surface can be similar to that discussed with reference to Figures 2a and 2b (e.g., the adhesive layer 194 can be adhered to each of the convex mirror elements only along one of the perimeters of each of the convex mirror elements) ).

The inventors have determined that one of the effects of optical stacking including one of the strip layers is determined. In its understanding, a strip layer can be provided which adheres to the convex mirror-like member and causes a refractive index change at a periphery of one of the convex mirror-like members when adhered to the convex mirror-like member. Here, the term perimeter refers to the outer boundary of each convex mirror element, and light from the light generating portion 142 is emitted or coupled out from the outer boundary after being redirected inside the convex mirror element. Variations can be made in different ways, as explained with reference to the single convex mirror-like elements shown in Figure 4, which are exemplary for a plurality or all of the convex mirror-like elements of the convex mirror-like member 170.

For example, the strip layer can be attached to the convex mirror-like member only intermittently, for example, as shown in Figures 2a and 2b. The strip layer can be applied to one of the first portions 175 of the convex mirror element, thus achieving a first type of refraction between the strip layer and the convex mirror element at the interface at the first portion 175, wherein the first type of refraction is a convex mirror element (ie, its material) and a strip layer The refractive index is determined. Moreover, the other portion 176, 177 of the convex mirror element can abut a gap (such as an air gap) which can be formed by intermittently attaching the strip layer in a manner as previously described. This achieves a second type of refraction at the interface between the convex mirror element and the gap, wherein the second type of refraction is determined by the refractive index of the convex mirror element and the medium (eg, air) inside the gap. The gap can also be filled with another medium, such as another air, liquid, polymer, or the like. The medium can be appropriately selected depending on the refractive index and thus achieves one of the second type of refraction adjustment.

The variation may be substantially symmetrical with respect to one of the optical central axes 178 of the convex mirror element, wherein, for example, light emitted from one of the central portions 175 of the perimeter is subject to the first type of refraction, and at either side of the central portion from the peripheral portion The light emitted by 176, 177 is subject to a second type of refraction.

The aforementioned refractive variation may also be obtained by a strip layer that is substantially continuously applied to the convex mirror member but which itself includes, for example, one of the refractive index changes due to material variation or due to local deformation, mechanical stress, and the like. . For example, the thickness of one of the anti-strip layers may vary, for example, the recess between adjacent convex mirror elements is thicker and thinner at the top of each convex mirror element. Alternatively or additionally, the variation may be one of optical properties other than refractive or refractive index. For example, the adhesive layer can be optically transparent but diffuses to some extent. The degree of diffusion can depend on the thickness of one of the adhesive layers. One variation of the diffusion can be obtained by applying the strip layer to the convex mirror member in such a manner that the recessed portion of the adhesive layer between adjacent convex mirror elements is thicker and is at the top of each convex mirror element. thin. Other optical properties can be envisioned as well. As an alternative to a continuous layer, the strip layer can be formed by a partial coating applied to one of the portions of each of the convex mirror elements.

Further embodiments of the invention are described in the following items.

Article 1. An autostereoscopic display comprising: i) a display panel providing display output from one of an array of pixels, and ii) an optical stack disposed at a display side of the display panel, the optical stack including :- a convex mirror member; and - An anti-stripe layer.

Article 2. An autostereoscopic display according to clause 1, wherein: - the convex mirror member comprises a contoured surface defining an array of convex mirror elements for use in mutually different directions Directing the outputs from respective groups of the pixels to enable sensing of a stereoscopic image; and - the stripe layer is disposed on the contoured surface of the convex mirror member, the strip layer comprising a primary a layer and an adhesive layer for adhering the strip layer to the contoured surface, wherein the strip layer is disposed on the contoured surface in such a manner that the adhesive layer is adhered to the convex mirror elements One of each of the protruding portions avoids the recess between the adjacent ones of the convex mirror elements to form a gap between the adjacent ones of the convex mirror elements and the strip layer .

Article 3. An autostereoscopic display according to clause 1, wherein: - the convex mirror member comprises a contoured surface defining an array of convex mirror elements for use in mutually different directions Directing the outputs from respective groups of the pixels to enable sensing of a stereoscopic image; the optical stack further includes a top layer disposed over the contoured surface to substantially avoid contouring Surface contact, the top layer includes a lower surface; and - the strip layer is disposed on the downwardly facing surface of the top layer, the strip layer includes a primary layer and is used to adhere the strip layer Adhesive layer to the lower surface.

Article 4. An autostereoscopic display according to clause 1, wherein the strip layer is disposed on or above the convex mirror member according to Fig. 2a or Fig. 3.

Article 5. An autostereoscopic display according to clause 1, wherein: - the convex mirror member comprises a contoured surface defining an array of convex mirror elements for use in mutually different directions Directing the outputs from respective groups of the pixels to enable sensing of a stereoscopic image; The strip layer is disposed on the contoured surface of the convex mirror member, the strip layer being configured to effect a photorefractive change at one of the perimeters of each of the convex mirror elements (or one another Optical properties change).

Article 6. An autostereoscopic display according to clause 5, wherein the stripe layer is configured for avoiding the second portion of each of the convex mirror elements while being attached to the first portion of each of the convex mirror elements This change in light refraction (or another change in optical properties) is achieved.

Article 7. An autostereoscopic display according to clause 6, wherein the first portion is a central portion centered on an optical axis of each of the lens elements, and wherein the second portion is at a peripheral portion at one of the sides of the central portion.

Article 8. An autostereoscopic display according to clause 5, wherein the stripe layer is configured to effect the light refraction variation (or the other optical property variation) based on at least one of: one of the materials of the strip layer The fluctuating one of the thicknesses of the strip layer changes locally, and the strip layer is locally deformed, and mechanical stress is locally applied to the strip layer.

Article 9. An electronic device comprising an autostereoscopic display according to any one of clauses 1 to 8.

Article 10. An optical stack such as any one of clauses 1 through 8.

Article 11. A method of attaching or applying an anti-strip filter to a convex mirror member, the method comprising pressing the anti-strip layer onto the convex mirror member with a pressing surface.

Article 12. The method of clause 11, wherein the convex mirror member comprises a contoured surface defining an array of convex mirror elements, wherein the strip layer comprises a primary layer and for the strip layer Adhesive to an adhesive layer of the contoured surface, and wherein the method comprises: - pressing the strip layer having the adhesive layer onto the convex mirror member by the pressing surface; and - during the pressing, controlling Pressing pressure to the phase of the convex mirror elements At the recess in the contoured surface between the neighbors, a gap is created and/or maintained between the strip layer and the convex mirror member.

Article 13. The method of clause 12, wherein the strip layer is a flexible layer, and wherein the method further comprises pressing the strip layer to the protrusion using a substantially rigid (ie, non-deformable) pressing surface On the mirror member.

Article 14. A method of making an optical stack comprising the method of any one of clauses 11 to 13.

Article 15. A method of making an autostereoscopic display comprising the method of any one of clauses 11 to 14.

It should be noted that the above-mentioned embodiments are illustrative of the invention and are not limiting of the invention, and those skilled in the art will be able to devise many alternative embodiments.

In the scope of the patent application, any reference signs placed between parentheses shall not be construed as limiting the scope of the application. The use of the verb "comprise" and its conjugations does not exclude the presence of elements or steps in addition to the elements or steps recited in the claims. The article "a" or "an" preceding an element does not exclude the claim. The invention can be implemented by a hardware comprising a plurality of distinct elements or by a suitably programmed computer. In the device technical solution enumerating several components, several of these components can be embodied by the same hardware. The mere fact that certain measures are recited in the various alternative embodiments are

142‧‧‧Light generating part/display panel

150‧‧‧ Optical stacking

160‧‧‧ spacer/spacer layer

170‧‧‧ convex mirror member / convex mirror element

180‧‧‧Gap/air gap

190‧‧‧Anti-stripe layer

192‧‧‧ main layer

194‧‧‧Adhesive/non-adhesive/contact layer

INS‧‧‧dredded rectangle

Claims (13)

An autostereoscopic display (140) comprising i) a display panel (142) providing display output from one of an array of pixels, and ii) an optical stack (150, 152) disposed on the display At one of the display sides of the panel, the optical stack includes: a convex mirror member (170) including a contoured surface defining an array of convex mirror elements for interfacing The outputs are directed from respective groups of pixels in a different direction to enable sensing of a stereoscopic image; and an anti-strip layer (190) configured for use along each of the convex mirror elements A perimeter (176, 177) achieves a change in light refraction. The autostereoscopic display (140) of claim 1, wherein the anti-strip layer (190) is disposed on the contoured surface of the convex mirror member, wherein the anti-strip layer comprises a main layer (192) and Adhesive layer is adhered to one of the contoured surfaces (194), and wherein the strip layer is disposed on the contoured surface in such a manner that the adhesive layer is adhered to the convex mirror elements One of the members of the member protrudes while avoiding the recess between the adjacent ones of the convex mirror elements to form a gap between the adjacent ones of the convex mirror elements and the strip layer Clearance (180). The autostereoscopic display (140) of claim 1, wherein the stripe layer (190) is configured for use by being attached to a first portion (175) of each of the convex mirror elements (170), This light refraction variation is achieved by avoiding one of the second mirror portions (176, 177) of each of the convex mirror elements. An autostereoscopic display (140) according to claim 3, wherein the first portion (175) is a central portion centered on one of the optical axes (178) of each of the convex mirror elements (170), and wherein the second portion ( 176, 177) is a peripheral portion at one side of the center portion. An autostereoscopic display (140) of claim 1, wherein the anti-strip layer (190) is configured For achieving the light refraction variation based on at least one of: one of the materials of the anti-strip layer is changed, one of the thicknesses of the anti-strip layer is changed, the strip layer is locally deformed, and the anti-stripping layer is The strip layer locally applies mechanical stress. The autostereoscopic display (140) of claim 1, wherein the optical stack (152) further comprises a top layer (200) disposed above the contoured surface to substantially avoid the contour Surface contact, wherein the top layer includes a downward facing surface facing the display panel (142), wherein the strip layer (190) is disposed on the downward facing surface of the top layer, and wherein the strip layer A primary layer (192) is included and an adhesive layer (194) for adhering the strip layer to the lower facing surface. An electronic device comprising the autostereoscopic display (140) of any one of claims 1 to 6. An optical stack (150, 152) according to any one of claims 1 to 6. A method of attaching or applying an anti-strip layer to a convex mirror member, wherein the convex mirror member includes a contoured surface, wherein the contoured surface defines an array of convex mirror elements, wherein the strip The layer includes a primary layer and an adhesive layer for adhering the strip layer to the contoured surface, and wherein the method includes pressing the strip layer onto the convex mirror member with a pressing surface. The method of claim 9, further comprising: pressing the strip layer having the adhesive layer onto the convex mirror member by the pressing surface; and during the pressing, controlling a pressing pressure to be at the same At the recess in the contoured surface between adjacent ones of the convex mirror elements, a gap is created and/or maintained between the strip layer and the convex mirror member. The method of claim 10, wherein the strip layer is a flexible layer, and wherein the method further comprises utilizing a substantially rigid (ie, non-deformable) pressing surface The strip layer is pressed against the convex mirror member. A method of manufacturing an optical stack, comprising the method of any one of claim 9 to claim 11. A method of manufacturing an autostereoscopic display, comprising the method of any one of claim 9 to claim 11.