TW202324045A - Key with glassesless three-dimensional function and keyboard using the same - Google Patents

Abstract

A key with glassesless three-dimensional (3D) function includes a key cap, a grating sheet and a display panel. The grating sheet is arranged on the key cap, the display panel is used to form a two-dimensional pattern, and the two-dimensional pattern is formed under the grating sheet. The two-dimensional pattern is imaged through the grating sheet to form a first disparity map and a second disparity map. The first disparity map and the second disparity map overlap to form a three-dimensional image.

Description

Buttons and keyboards with naked-view 3D function

The present invention relates to a keyboard, and in particular relates to a button and a keyboard with a naked-view 3D function.

With the popularity of gaming keyboards, the market is full of gaming keyboards that emphasize LED lighting effects. In addition to the presentation of traditional lighting effects, through 3D display technology, users can watch 3D images with spatial depth and produce a 3D visual experience. However, the current stereoscopic display technology needs to wear glasses or detect the position of human eyes, which cannot achieve the effect of glassesless 3D.

The present invention relates to a button and a keyboard with naked-eye 3D functions, which are used to form a two-dimensional pattern into a three-dimensional image, allowing users to experience naked-eye 3D visual experience.

According to one aspect of the present invention, a button with a naked-view 3D function is provided, which includes a keycap, a grating sheet, and a display panel. The grating sheet is arranged on the keycap, and the display panel is used to form a two-dimensional pattern. The two-dimensional pattern is located under the grating sheet. The two-dimensional pattern forms a first parallax map and a second parallax map after imaging through the grating sheet, and the first parallax map and the second parallax map are overlapped to form a stereoscopic image.

According to one aspect of the present invention, a keyboard with buttons with naked-view 3D function is proposed, wherein the display panel dynamically adjusts the position of the two-dimensional pattern according to the viewing position of human eyes.

In order to have a better understanding of the above-mentioned and other aspects of the present invention, the following specific examples are given in detail with the accompanying drawings as follows:

The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art on the premise of being obvious belong to the protection scope of the present application. The same/similar symbols are used to represent the same/similar components in the following description.

Please refer to FIG. 1 , which shows a schematic diagram of a keyboard 100 according to an embodiment of the present invention. In this embodiment, the keyboard 100 is, for example, a general typing keyboard or an gaming keyboard. In order to increase the user's visual experience, the keyboard 100 has a button 110 with a naked-view 3D function, such as a function key or a switch key. When the user When the button 110 with naked-view 3D function is pressed, the detection or sensing function of the keyboard 100 is activated or the current usage status (as shown in the display area 111 ) is displayed, and an autostereoscopic image 130Z (autostereoscopic) is displayed on the button 110 image) to catch the user's attention.

Autostereoscopic display technology refers to a stereoscopic display method that does not require the viewer to use a special head-mounted device or glasses. Autostereoscopic display technologies include lenticular lens or parallax barrier display, volumetric display, holographic display and so on. Through the parallax barrier or lenticular lens that redirects the image to multiple viewing regions, when the viewer's head is at a specific position, the left and right eyes will see different images, and there is a stereoscopic image 130Z effect.

Please refer to FIG. 2 , which shows a schematic diagram of a button 110 with a naked-view 3D function according to an embodiment of the present invention. In one embodiment, the button 110 includes a keycap 121 , a grating sheet 122 and a display panel 128 . The grating sheet 122 is disposed on the keycap 121 , and the display panel 128 is used to form a two-dimensional pattern 130 . The two-dimensional pattern 130 is located under the grating sheet 122 . The two-dimensional pattern 130 is imaged through the grating sheet 122 to form a stereoscopic image 130Z.

In addition, the button 110 further includes an elastic member 124 , a membrane switch 125 , a light guide plate 126 and a light source 127 . The elastic member 124 (such as a rubber bump) is disposed in the frame 123 between the keycap 121 and the membrane switch 125 to provide resilience when the keycap 121 is pressed down. The membrane switch 125 includes a first conductive layer 125a, an insulating layer 125b and a second conductive layer 125c. When the keycap 121 is pressed down to deform the elastic member 124, the membrane switch 125 is forced to make the first conductive layer 125a contact with the two electrodes of the second conductive layer 125c, so as to generate a trigger signal. In addition, the light guide plate 126 is, for example, disposed below the membrane switch 125 and above the display panel 128, and the light source 127 is disposed on one side of the light guide plate 126, and the light generated by the light source 127 can be guided to the bottom of the keycap 121 through the light guide plate 126, and then It is reflected or refracted upward by the light guide plate 126 and incident into the keycap 121 to produce lighting effects.

In addition, the display panel 128 is, for example, disposed under the light guide plate 126 to provide a two-dimensional pattern 130 . The display panel 128 is, for example, an electronic paper display (EPD) or an electrophoretic display (EPD). The display panel 128 has an upper substrate 128a, an electronic ink layer 128b, and a lower substrate 128c. The electronic ink layer 128b is disposed between the upper substrate 128a and the lower substrate 128c. The lower surface of the upper substrate 128a is configured with a transparent electrode layer, such as indium tin oxide (ITO), as an upper electrode plate. The upper surface of the lower substrate 128c is configured with a thin film transistor array (TFT array) or conductive graphite as a lower electrode plate. The electronic ink layer 128b may include millions of microcapsules, and each microcapsule contains electrophoretic particles, wherein the electrophoretic particles are negatively charged white particles and positively charged black particles, suspended in a transparent liquid. When an electric field is formed between the upper substrate 128a and the lower substrate 128c, the electrophoretic particles move to the top of the microcapsules using the principle of positive and negative charges attracting each other, and the user can see white or black particles on the corresponding block , and further display the two-dimensional pattern 130 .

In this embodiment, the electronic paper display can display the pattern of each key 110 on the keyboard 100 instead of the traditional printed pattern. At the same time, the electronic paper display has the feature of dynamically adjusting the layout of the keyboard 100, and can replace the pattern of the designated key 110 (such as a function key) on the keyboard 100 with a raster image required for a naked-view 3D effect according to requirements.

As shown in FIG. 2, the two-dimensional pattern 130 includes a first grating pattern 131 and a second grating pattern 132. The first grating pattern 131 and the second grating pattern 132 are interleaved in columns, rows, checkerboards, and sub-pixels, for example. Arranged in a manner, the first grating pattern 131 and the second grating pattern 132 can be imaged through the grating sheet 122 on the keycap 121 and projected to the left eye and right eye of a person respectively to generate a composite image.

Please refer to FIG. 3 , which shows a schematic diagram of a grating sheet 122 according to an embodiment of the present invention. In this embodiment, the grating sheet 122 has, for example, a plurality of lenticular gratings 122a (or lenticular lenses) arranged in parallel, and the lenticular lens 122a has, for example, a semi-cylindrical surface, but not limited thereto. The grating sheet 122 is formed on the upper surface of the keycap 121 by pasting, engraving or printing, for example. However, the grating sheet 122 is not limited to be implemented by the lenticular lens grating 122a, and may also be implemented by other types of transmission gratings or slit gratings.

Please refer to Figures 4A, 4B and 5, wherein Figures 4A and 4B respectively show the schematic diagrams of the two-dimensional pattern 130 being imaged in the human eye through the grating sheet 122, and Figure 5 shows the generated two disparity maps through the overlapping method A schematic diagram of forming a stereoscopic image 130Z. When the human eyes watch the stereoscopic image 130Z formed by the lenticular sheet 122 from different viewing angles, there is a parallax between the left eye L and the right eye R of the human, thus producing a stereoscopic effect on the image. As shown in FIGS. 4A and 4B , the first grating pattern 131 and the second grating pattern 132 can be imaged through the grating sheet 122 and projected to human eyes respectively to form a first parallax map 130X and a second parallax map 130Y. Through the human brain visual system, the first disparity map 130X and the second disparity map 130Y overlap to form a stereoscopic image 130Z.

That is to say, the difference between the images seen by the two eyes is called disparity/parallax. Due to the existence of this parallax, people can distinguish the distance of objects and obtain a three-dimensional effect.

If the two-dimensional pattern 130 is composed of a series of continuous animations, then when the human eyes move left and right or the lenticular sheet 122 is moved left and right, the angle between the human eyes and the lenticular sheet 122 will change, so the human eyes see continuous images one after another. Like, that is to see an animation or continuous changing effect. Please refer to Figure 4B. This embodiment can detect the position of the human eye through human eye tracking (for example, use a detector (camera) to capture the pupil position of the human eye), and dynamically adjust the two-dimensional position according to the movement of the human eye viewing position. The position of the pattern 130 allows the user to see the stereoscopic image 130Z on the button 110 from any angle. As shown in FIG. 4B , when the positions of the two eyes move to the left, the dynamically adjusted 2D pattern 130 moves to the left to generate continuous images or animations.

In this embodiment, the electronic paper display has the characteristic of dynamically adjusting the position of the grating pattern, so the electronic paper display can cooperate with the human eye tracking method and the grating sheet 122 on the button 110 to produce a naked image that can see three-dimensional images regardless of any angle. The 3D effect can be used to improve the usage rate and visual effect of the function keys on the keyboard.

To sum up, although the present invention has been disclosed by the above embodiments, it is not intended to limit the present invention. Those skilled in the art of the present invention can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the scope of the appended patent application.

100: keyboard 110: button 111: display area 121: keycap 122: grating film 122a: Cylindrical grating 123: frame 124: Elastic parts 125:Membrane switch 125a: the first conductive layer 125b: insulating layer 125c: second conductive layer 126: light guide plate 127: light source 128: display panel 128a: upper substrate 128b: Electronic ink layer 128c: lower substrate 131: The first grating pattern 132: Second grating pattern 130X: First disparity map 130Y: Second disparity map 130Z: Stereoscopic image

FIG. 1 shows a schematic diagram of a keyboard according to an embodiment of the present invention; FIG. 2 shows a schematic diagram of a button with a naked-view 3D function according to an embodiment of the present invention; FIG. 3 shows a schematic diagram of a lenticular lens grating according to an embodiment of the present invention; Figures 4A and 4B respectively show schematic diagrams of a two-dimensional image imaged in the human eye through a grating sheet; FIG. 5 shows a schematic diagram of forming a stereoscopic image by overlapping two generated disparity maps.

100: keyboard

110: button

111: display area

130Z: Stereoscopic image

Claims (10)

A button with naked-view 3D function, including: One key cap; a grating sheet arranged on the keycap; and A display panel for forming a two-dimensional pattern, the two-dimensional pattern is located under the grating sheet, the two-dimensional pattern is imaged through the grating sheet to form a first parallax map and a second parallax map, the first parallax map and overlapping with the second disparity map to form a stereoscopic image. The button according to claim 1, wherein the display panel is an electronic paper display or an electrophoretic display. The button according to claim 1, wherein the display panel has an upper substrate, an electronic ink layer, and a lower substrate, and the electronic ink layer is disposed between the upper substrate and the lower substrate. The button according to claim 1, wherein the grating sheet has a plurality of lenticular gratings arranged in parallel. The button according to claim 1, wherein the grating sheet is formed on the upper surface of the keycap by sticking, engraving or printing. The button according to claim 1, wherein the two-dimensional pattern includes a first grating pattern and a second grating pattern, and the first grating pattern and the second grating pattern are alternated in columns, rows, checkerboards, and sub-pixels arranged in a manner. The button according to claim 6, wherein the first grating pattern and the second grating pattern are imaged through the grating sheet and then projected to human eyes to form the first parallax map and the second parallax map. A keyboard comprising: The button with naked-view 3D function according to any one of claims 1 to 7, wherein the display panel dynamically adjusts the position of the two-dimensional pattern according to the viewing position of human eyes. The keyboard according to claim 8, wherein the two-dimensional pattern is a continuous image or animation. The keyboard as described in Claim 8 further includes a light guide plate and a light source, the light guide plate is disposed above the display panel, and the light source is disposed on one side of the light guide plate.

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