TWI825526B - 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-eye 3D function

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

With the popularity of gaming keyboards, the market is filled with various gaming keyboards that emphasize LED lighting effects. In addition to the presentation of traditional lighting effects, through stereoscopic display technology, users can view three-dimensional images with spatial depth and create a three-dimensional visual experience. However, current stereoscopic display technology requires wearing glasses or detecting the position of human eyes, and cannot achieve the effect of glassesless 3D.

The invention relates to a button and keyboard with a naked-eye 3D function, which is used to form a two-dimensional pattern into a three-dimensional image, allowing the user to have a naked-eye 3D visual experience.

According to one aspect of the present invention, a key with a naked-eye 3D function is proposed, 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 on the grating sheet below. The two-dimensional pattern is imaged through the grating sheet to form a first parallax image and a second parallax image. The first parallax image and the second parallax image overlap to form a three-dimensional image.

According to one aspect of the present invention, a keyboard with keys with a naked-eye 3D function is proposed, in which the display panel dynamically adjusts the position of the two-dimensional pattern according to the viewing position of the human eye.

In order to have a better understanding of the above and other aspects of the present invention, examples are given below and are described in detail with reference to the accompanying drawings:

100:Keyboard

110:Button

111:Display area

121:Keycap

122:Grating film

122a: Lenticular grating

123:Frame

124: Elastic parts

125:Membrane switch

125a: first conductive layer

125b: Insulation layer

125c: Second conductive layer

126:Light guide plate

127:Light source

128:Display panel

128a: Upper substrate

128b: Electronic ink layer

128c: Lower base plate

131: First grating pattern

132: Second grating pattern

130X: First disparity map

130Y: Second disparity map

130Z: Stereoscopic image

Figure 1 is a schematic diagram of a keyboard according to an embodiment of the present invention; Figure 2 is a schematic diagram of a key with a naked-eye 3D function according to an embodiment of the present invention; Figure 3 is a schematic diagram of a keyboard according to an embodiment of the present invention. A schematic diagram of a lenticular grating; Figures 4A and 4B respectively show a schematic diagram of a two-dimensional image being imaged in the human eye through a grating sheet; Figure 5 shows a schematic diagram of the two generated parallax images forming a three-dimensional image through overlapping .

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on this application Embodiments, and all other embodiments that can be easily understood by those with ordinary skill in the art, fall within the scope of protection of this application. The following description uses the same/similar symbols to indicate the same/similar components.

Please refer to FIG. 1 , which is 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 a gaming keyboard. In order to enhance the user's visual experience, the keyboard 100 has keys 110 with naked-eye view 3D functions, such as function keys or switch keys. When the user When the button 110 with the naked-eye 3D function is pressed, the detection or sensing function of the keyboard 100 is activated or the current usage status is displayed (as shown in the display area 111), and an autostereoscopic image 130Z (autostereoscopic) is displayed on the button 110. image) to attract the user's attention.

Autostereoscopic display technology refers to a stereoscopic display method that does not require the viewer to use special head-mounted devices or glasses. Autostereoscopic display technology includes lenticular lens or parallax barrier display, volumetric display, holographic display, etc. Through parallax barriers or lenticular lenses that redirect images to multiple viewing regions, when the viewer's head is in a specific position, the left and right eyes will see different images, creating the effect of a 130Z stereoscopic image.

Please refer to FIG. 2 , which illustrates a schematic diagram of a button 110 with a naked-eye 3D function according to an embodiment of the present invention. In one embodiment, the key 110 includes a key cap 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 . This two-dimensional pattern 130 Located below the grating sheet 122. The two-dimensional pattern 130 is imaged through the grating sheet 122 to form a three-dimensional image 130Z.

In addition, the button 110 also 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 contact the two electrodes of the first conductive layer 125a and the second conductive layer 125c 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 . The light source 127 is disposed on one side of the light guide plate 126 . The light generated by the light source 127 can be guided to the bottom of the keycap 121 through the light guide plate 126 . The light is reflected or refracted upward by the light guide plate 126 and then incident into the keycap 121 to produce an illumination effect.

In addition, the display panel 128 is, for example, disposed below the light guide plate 126 to provide the 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. A transparent electrode layer, such as indium tin oxide (ITO), is disposed on the lower surface of the upper substrate 128a to serve as an upper electrode plate. A thin film transistor array (TFT array) or conductive graphite is disposed on the upper surface of the lower substrate 128c to serve as a lower electrode plate. Electronic ink layer 128b may include millions of Each microcapsule contains electrophoretic particles. The electrophoretic particles are negatively charged white 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 microcapsule using the principle of positive and negative charges attracting each other. The user can see white or black particles on the corresponding area. , and then 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 to replace the traditional printed pattern. At the same time, the electronic paper display has the characteristic of dynamically adjusting the layout of the keyboard 100, and can replace the pattern of the designated keys 110 (such as function keys) on the keyboard 100 with a raster pattern required for a naked-eye 3D effect as needed.

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, for example, interlaced in columns, rows, checkerboards, and sub-pixels. 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 then projected to the left eye and right eye of a person respectively to generate a composite image.

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

Please refer to Figures 4A, 4B and 5. Figures 4A and 4B respectively illustrate the schematic diagram of the two-dimensional pattern 130 being imaged in the human eye through the grating sheet 122. Figure 5 illustrates the two generated parallax images through overlapping. A schematic diagram of forming a stereoscopic image 130Z. When human eyes view the stereoscopic image 130Z imaged by the grating sheet 122 from different viewing angles, a stereoscopic visual effect is produced on the image due to parallax between the human left eye L and the right eye R. 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 then projected to the human eye respectively to form a first parallax image 130X and a second parallax image 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.

In other words, the deviation caused by the different images seen by the two eyes is called parallax (disparity/parallax). Due to the existence of this parallax, people can distinguish the distance of objects and obtain a three-dimensional sense.

If the two-dimensional pattern 130 is composed of a series of continuous animations, then when the human eye moves left and right or the grating sheet 122 moves left and right, the angle between the human eye and the grating sheet 122 will change, so the human eye sees one continuous pattern after another. Like, that is, seeing an animation or a continuously changing effect. Please refer to Figure 4B. This embodiment can detect the position of the human eye through human eye tracking (for example, using a detector (camera) to capture the pupil position of the human eye), and dynamically adjust the 2D position according to the movement of the human eye's viewing position. The position of the pattern 130 allows the user to see the three-dimensional image on the button 110 from any angle. 130Z. As shown in Figure 4B, when the positions of the two eyes move to the left, the dynamically adjusted two-dimensional 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. Therefore, 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 three-dimensional image that can be viewed from any angle. View 3D effects to improve the usage and visual effects of function keys on the keyboard.

In summary, although the present invention has been disclosed above through embodiments, they are not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention belongs can make various modifications and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the appended patent application scope.

100:Keyboard

110:Button

111:Display area

130Z: Stereoscopic image

Claims (8)

A key with naked-view 3D function, including: a keycap; a grating sheet, arranged on the keycap; and a display panel to form a two-dimensional pattern, the two-dimensional pattern is located below the grating sheet, the The two-dimensional pattern is imaged through the grating sheet to form a first parallax image and a second parallax image. The first parallax image and the second parallax image overlap to form a three-dimensional image, wherein the display panel is an electronic paper display. Or an electrophoretic display, the two-dimensional pattern is a continuous image or animation, the display panel dynamically adjusts the position of the two-dimensional pattern according to the viewing position of the human eye, and the moving direction of the two-dimensional pattern is consistent with the moving direction of the viewing position of the human eye. consistent. The key of 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 key as claimed in claim 1, wherein the grating sheet has a plurality of cylindrical gratings arranged in parallel. The key according to claim 1, wherein the grating sheet is formed on the upper surface of the keycap by attaching, engraving or printing. The key of 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 interlaced in columns, rows, checkerboards, and sub-pixels. arranged in a way. The key of claim 5, wherein the first grating pattern and the second grating pattern are imaged through the grating sheet and then projected to the human eye respectively to form the first parallax image and the second parallax image. A keyboard, including: keys with naked-view 3D function as described in one of claims 1 to 6, wherein the display panel is an electronic paper display or an electrophoretic display, and the two-dimensional pattern is a continuous image or animation, The display panel dynamically adjusts the position of the two-dimensional pattern according to the viewing position of the human eye, and the moving direction of the two-dimensional pattern is consistent with the moving direction of the viewing position of the human eye. The keyboard of claim 7 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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