TW200845073A - Light-sensitive keypad structure and electronic device having the same - Google Patents

Abstract

The disclosure defined a light-sensitive keypad structure by this invention. The light-sensitive keypad structure includes a keypad. The keypad includes a keypad body and an opaque layer. The keypad body includes a color-changing layer whose the forming material comprises a photochromic material. The opaque layer is partially covered the keypad body wherein the opaque layer has a hollow which is used to form a pattern. The photochromic material without striking of the ultra-violet has a first color. When striking of the ultra-violet, the photochromic material is changed from the first color to a second color for displaying the pattern with the striking of the ultra-violet. Another disclosure defined an electronic device having light-sensitive keypad structure by this invention.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push button and an electronic device having the same, and more particularly to a touch button and an electronic device having the touch button. [Prior Art] With the advent of technology life, various electronic devices such as mobile phones, personal digital assistants, digital cameras, etc. have long been integrated into people's daily lives and are increasingly powerful. When the user operates these functions, they must operate through the input device, and one of the most commonly used input devices is the button. When the user operates the button, the function of operating the electronic device is achieved by first using the text on the eye recognition button and then pressing the button to contact the trigger area on the circuit board to output a signal. In order to easily understand the key words, the general electronic device generally has a Light Emitting Diode (LED) inside the button, and the LED is illuminated to make the user's button text easy to read. But when the external light passes through the party, the brightness of the outside is much larger than the brightness of the LED. At this time, the illumination of the LED cannot effectively display the _ text, causing f disturbance in the user's operation. However, the operation of the electronic device is fresh and the location of use is not limited. The false right user may not be able to clearly recognize the text on the button when the button is operated, which may cause user's operation trouble. 6

200845073TW3402PA SUMMARY OF THE INVENTION The present invention relates to a photosensitive button structure and an electronic device having a photosensitive button structure, so that the pattern on the button can be clearly recognized. According to a first aspect of the invention, a photosensitive button structure is proposed which includes a button. The button includes a button body and an opaque layer. The button body includes a color changing layer, and the constituent material of the color changing layer includes a photochromic material. The opaque layer partially covers the button body, and the opaque layer has a hollowed out area, and the hollowed out area forms a pattern. The photochromic material has a first color when it is not irradiated with ultraviolet light, and the photochromic material changes from the first color to the second color upon irradiation with ultraviolet light, and causes the pattern to appear under ultraviolet light. According to a first aspect of the invention, another photosensitive button structure is proposed which includes a button. The button includes a button body and an opaque layer. The constituent material of the button body includes a photochromic material. The opaque layer partially covers the button body, and the opaque layer has a hollowed out area, and the hollowed out area forms a pattern. The photochromic material has no first color when irradiated with ultraviolet light, and the photochromic material changes from the first color to the second color upon irradiation with ultraviolet light, and the pattern appears under ultraviolet light. According to a second aspect of the present invention, an electronic device of a photosensitive key structure is provided, comprising a keyboard, a circuit board, a plurality of elastic switches, and a display element. The keyboard includes a plurality of photosensitive button structures, wherein each of the photosensitive buttons includes a button body and an opaque layer. The constituent material of the button body includes a photochromic material. The opaque layer partially covers the button body and is opaque 7

200845073 The W3402PA layer has a hollowed out area, and the hollowed out area forms a pattern in which the photochromic material has a first color when not irradiated with ultraviolet light, and the photochromic material is converted from the first color to one by ultraviolet light. The second color is made and the pattern appears under ultraviolet light. The board is placed below the keyboard. A plurality of elastic open relationships are disposed on the circuit board and respectively correspond to the lower side of the photosensitive button structure, and are triggered by the corresponding photosensitive button structure. The display component is coupled to the circuit board for displaying the information corresponding to the triggered flexible switch when the elastic switches are touched. According to a second aspect of the present invention, another electronic device having a photosensitive key structure includes a keyboard, a circuit board, a plurality of elastic switches, and a display element. The keyboard includes a plurality of photosensitive button structures, wherein each of the photosensitive buttons includes a button body and an opaque layer. The button body comprises a color changing layer, and the constituent material of the color changing layer comprises a photochromic material. The opaque layer partially covers the button body, and the opaque layer has a hollowed out region, wherein the bellows region forms a pattern, wherein the photochromic material has a first color without ultraviolet light, and the light When the color-changing material is irradiated by ultraviolet light, it changes from 'the second color to the second color, and the pattern appears in the ultraviolet well “U,, and the cadmium. The circuit board is placed under the keyboard. Several elastic relationship settings Above, and corresponding to the bottom of the photosensitive button structure, and triggered by the corresponding, and the button structure of the board. The display component is coupled to the circuit, and the photosensitive elastic switch is invented to display the corresponding triggering secret. ^Tian these halls 1 Wang switch of the news, for the sake of making the above-mentioned content of the present invention more obvious, the following ~, with the accompanying drawings, a detailed description is as follows:

200845073TW3402PA [Embodiment] A photosensitive button structure and an electronic device having a photosensitive button structure of the present invention are characterized in that the button comprises a photochromic material. When the photochromic material is irradiated with ultraviolet light (for example, sunlight), the original color is changed so that the pattern on the button can be clearly displayed. When applied to an electronic device, it is convenient for the user to see the pattern on each button under ultraviolet light to reduce the problem of user identification. Please refer to FIG. 1 , which illustrates a photosensitive button structure in accordance with a preferred embodiment of the present invention. The photosensitive button structure includes at least one button 1 〇〇. The button 100 includes a button body 110 and an opaque layer 112. The button body 100 includes a color changing layer 114, and the constituent material of the color changing layer 114 includes a photochromic material. The opaque layer 112 partially covers the button body 110, and the opaque layer has a hollowed out region, and the hollowed out region forms a pattern. The photochromic material has a first color when it is not irradiated by ultraviolet light (for example, sunlight), and changes from the first color to the second color when the photochromic material is irradiated with ultraviolet light, and the pattern appears under ultraviolet light. . Since the opaque layer 112 is laser-engraved, the opaque layer 112 is partially covered on the color-changing layer 114, wherein the opaque layer 112 forms a hollowed-out region 125 through the region of the laser-engraved space. The area 125 is used to indicate the pattern of the button 100, such as a symbol, a character, a number, or a pattern. In a preferred embodiment, the button 100 preferably further includes a back printing 11 and a protective layer 113. The back printed layer 111 is disposed at the bottom of the button body 110. The opaque layer 112 is partially covered by the button book 9

200845073W3402PA Body 110. The protective layer 113 covers the upper surface of the opaque layer 112, and the material of the protective layer 113 is a transparent material. Since the opaque layer is a material that is easily worn, if the opaque layer 112 is not covered by the protective layer 113, the pattern of the opaque layer 112 is easily worn during use. If the pattern on the loose key 10 0 is worn and it is difficult to recognize, the button 1 〇 上 will cause a lot of inconvenience when it is used. Therefore, covering a protective layer 113 can effectively prevent the opaque layer 112 from being worn, and effectively protect the pattern on the button 100 from wear. The protective layer 113 is made of a transparent material and the opaque layer 112 has a hollowed-out region 125, so that the external ultraviolet light can directly penetrate the protective layer 113 and pass through the hollowed-out region 125, so that the ultraviolet light directly illuminates the color-changing layer 114. At this time, the color changing layer 114 reacts with ultraviolet light to change from the original first color to the second color. In the present embodiment, the color changing layer 114 is mixed with the photochromic material to be integrally molded in an injection manner. In addition, the second color of the color changing layer 114 and the third color of the opaque layer 112 are mutually contrasting colors. Therefore, when the photo-induced material is in contact with the ultraviolet light, the pattern of the hollow region 125 is changed by the first color 0 color. For the second color, the pattern of the button 100 is clearly displayed by color contrast, effectively enhancing the recognition of the button 100. In a preferred embodiment, the photochromic material is converted from the second color back to the first color when the ultraviolet light is stopped. In a preferred embodiment, the opaque layer 112 has a third color different from the second color, the third color of which is different from the second color of the photochromic material and the third color and photochromism The second color of the material is preferably a contrasting color to provide a second color.

200845073rW3402PA In another preferred embodiment, as shown in FIG. 1, the photosensitive button structure further includes at least one elastic switch 120 and at least one light emitting module 130. The elastic switch 120 is disposed opposite to the button 100. The light emitting module 130 is disposed on the circuit board 140. When the button 100 triggers the elastic switch 120, the light emitting module 130 provides a light source for displaying the pattern. The light source is diverged from the bottom of the button 1 , and is emitted through the hollow region 125 of the opaque layer 112, whereby the pattern of the button 100 can be recognized by the light. In this embodiment, the light emitting module 130 uses a Light Emitting Diode (LED) as a light source. Therefore, under the illumination of non-ultraviolet light or in an environment with insufficient light, the button structure can provide a light source for displaying the opaque layer 112 pattern by using the light-emitting module 130, thereby identifying the pattern on the button 100. Please refer to both Figure 1 and Figure 2. Figure 2 is a diagram showing an electronic device having a photosensitive button structure in accordance with a preferred embodiment of the present invention. An electronic device 200 having a photosensitive button structure includes a keyboard 210, a display component 220, a light sensor 230, a circuit board 140, a plurality of elastic switches 120, and a plurality of light emitting modules 130. The keyboard 210 includes a plurality of buttons I%, each of which has a pattern. The photochromic material changes from the first color to the second color upon irradiation with ultraviolet light, and causes the pattern to appear under ultraviolet light. The circuit board 140 is disposed below the keyboard 210. A plurality of elastic switches 120 are disposed on the circuit board 140 and respectively correspond to the lower side of each button. A plurality of light emitting modules 130 are disposed on the circuit board 140. Display element 220 is consuming on circuit board 140. The keyboard 21A includes a plurality of buttons 100, a resilient bottom plate 122, and a light shielding layer 240. The elastic bottom plate 122 is disposed between the button 100 and the elastic switch 120, 11

200845073 W3402PA has at least - button area b and - non-key area a. The button 1 is disposed on the button area b, and the elastic switch 12 is disposed on the circuit board 14 且 and corresponding to the button _ directly below. In addition, a plurality of light shielding layers 240' are disposed on the plurality of button areas a to prevent the light source provided by the light emitting module 130 from being emitted from the non-key area a. When the mouse is illuminated by ultraviolet light, the color change layer m inside the button 1 will be changed from the first color to the second color, and the pattern on the button 1 can be displayed. When any button 100 triggers the corresponding elastic opening _ 120, its corresponding = lighting module 13G provides a light source for displaying the corresponding pattern, and a message 14 〇 transmits a message to the display element 220. In another preferred embodiment, the electronic device includes a photo-sensing 230' that is electrically coupled to the circuit board. The function of the light sensor 23 is used to control the light-emitting module 13G to stop supplying the light source when the system of the L-Boundary is used. Since the external source 2, such as sunlight, usually has a component of ultraviolet light, the color change layer 114 can be changed when the button 100 of the electronic device 200 is in contact with the external light source, and the pattern on the button 100 is displayed. Assuming that the external light source is the same as the light-emitting module 13 = providing a light source, since the brightness of the external light source is much larger than the light source provided by the light-emitting module 130, the light source of the light-emitting module 13 提供 provided to the opaque layer ι 2 is weak and Does not work. Therefore, by controlling the light-emitting module 130 by the light sensor 23, the supply of the light source is stopped, and the power saving effect can be achieved. The E-Research 200 Series can be a handheld electronic device such as a mobile phone, a personal digital assistant, or a digital camera. Further, reference is made to Fig. 3, which is another preferred embodiment of the present invention.

2OO845O73W3402PA Example, FIG. 3 illustrates a photosensitive button structure in accordance with another preferred embodiment of the present invention. The maximum difference between the button 300 and the aforementioned button 1 is the method of setting the photo-induced material. In the above-mentioned button structure 1 , the photochromic material is provided with a color changing layer 114 on the button body 11 , and the button 300 is used to mix the photochromic material with the material of the button body 310 , that is, the button body 310 The constituent materials include photochromic materials. Preferably, the photochromic material is integrally formed with the button body 310 in an injection manner. Like the aforementioned button 100, ultraviolet light can be incident from the hollow region 丨25, and reacts with the button body 31〇 having the photochromic material to change the button body 310 from the first color to the second color, so that the pattern of the button 300 is displayed. . The photosensitive button structure and the electronic device having the photosensitive button structure disclosed in the above embodiments of the present invention utilize the characteristics of the photochromic material to change from the original first color to the second color by using ultraviolet light irradiation, and The contrast color of the opaque layer is designed to allow the pattern on the button to be clearly identified. In view of the above, the present invention has been disclosed in a preferred embodiment, and is not intended to limit the present invention. Those skilled in the art having the knowledge of the present invention can make various changes and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of the invention is defined by the scope of the appended claims. 13

200845073 rW3402PA [Simplified description of the drawings] FIG. 1 is a schematic diagram of a photosensitive button structure according to a preferred embodiment of the present invention, and FIG. 2 is a diagram showing an electronic device having a photosensitive button structure according to a preferred embodiment of the present invention. FIG. 3 is a diagram showing a photosensitive button structure according to another preferred embodiment of the present invention.

200845073 W3402PA [Description of main component symbols] a : Non-key area b · Button area 100, 300: Button 110, 310: Button body 111: Back printing 112: opaque layer 113: Protective layer 114: Discoloration Layer 120: elastic switch 122: elastic bottom plate 125: hollow area 130: light emitting module 140: circuit board 200: electronic device 210: keyboard 220: display element 230: light sensor 240: light shielding layer 15

Claims (1)

200845073 is called 2PA. Patent application scope: 1. A photosensitive button structure, comprising: a button, the button comprises: a button body, the button body comprises a color changing layer, and the component material of the color changing layer comprises a photochromic material; And an opaque layer partially covering the button body, and the opaque layer has a hollowed out region, wherein the hollowed out region forms a pattern; wherein the photochromic material has a first light when not irradiated with ultraviolet light The color changes from the first color to a second color when the photochromic material is irradiated with ultraviolet light, and the pattern appears under ultraviolet light. 2. The photosensitive button structure of claim 1, wherein the photochromic material is converted from the second color to the first color when the ultraviolet light is stopped. 3. The photosensitive button structure of claim 1, wherein the button further comprises: a back printing layer disposed at a bottom of the button body; and a protective layer covering the opaque layer The layer and the top of the button body. 4. The photosensitive key structure of claim 1, wherein the opaque layer has a third color different from the second color. 5. The photosensitive key structure of claim 4, wherein the third color and the second color are contrasting colors. 6. The photosensitive key structure of claim 1, wherein the color changing layer is integrally formed with the photochromic material in an injection manner. The heat-sensitive button structure described in claim 1 further includes a flexible switch disposed under the button. 8. The photosensitive key structure of claim 7 further comprising a light emitting module ??? when the elastic switch is triggered, the light emitting module provides a light source for visualizing the pattern. 9. A photosensitive button structure, comprising: a button, the button comprising: a button body, the component material of the button body comprises a photochromic material; and an opaque layer, partially covering the button a button body, and the opaque layer has a hollowed out region, wherein the hollowed out region forms a pattern; wherein the photochromic material has a first color when not irradiated with ultraviolet light' when the photochromic material is irradiated with ultraviolet light The time changes from the first color to a second color, and the pattern appears under ultraviolet light. 10. The photosensitive button structure of claim 9, wherein the photochromic material is turned from the second color to the first color when the ultraviolet light is stopped. The photosensitive button structure of claim 9, wherein the button further comprises: a back printing layer disposed at a bottom of the button body; and a protective layer covering the opaque layer The layer and the top of the button body. 12. The photosensitive key structure of claim 9, wherein the opaque layer has a third color different from the second color. The photosensitive button structure of claim 12, wherein the third color and the second color are mutually contrasting colors. 14. The photosensitive key structure of claim 9, wherein the key system and the photochromic material are integrally formed in an injection manner. 15. The photosensitive button structure of claim 9, further comprising a flexible switch disposed below the button. The photosensitive button structure of claim 15, further comprising a light emitting module, wherein when the elastic switch is triggered, the light emitting module # provides a light source for displaying the pattern. An electronic device having a photosensitive button structure, comprising: a keyboard, comprising a plurality of photosensitive button structures, wherein each of the photosensitive button structures comprises: a button body, the button body comprising a color changing layer, the color changing layer The constituting material comprises a photochromic material; and an opaque layer partially covering the button body, and the opaque layer has a hollowed out region, the hollow region forming a pattern C (where the light) The color-changing material has a first color when it is not irradiated with ultraviolet light, and changes from the first color to a second color when the photochromic material is irradiated with ultraviolet light, and causes the pattern to appear under ultraviolet light irradiation; a circuit board disposed under the keyboard; a plurality of elastic switches disposed on the circuit board respectively corresponding to the underside of the photosensitive button structures and triggered by the corresponding photosensitive button structure; and 18 200845073 fW3402PA ” The page display component is coupled to the circuit board for displaying a message of the elastic switch that should be triggered when the elastic switches are triggered. 18. The electronic device according to the invention, wherein the photochromic material is converted from the second color to the first color after the Ί Ί Μ 。 1 1 1 1 1 1 1 1 1 1 1 1 The electronic device of the present invention, wherein the photosensitive button structure further comprises: a January printing layer disposed at a bottom of the button body; and a protective layer covering the opaque layer and the upper portion of the button body. The electronic device of claim 1, wherein the opaque layer has a third color different from the second color, wherein the electronic device of claim 2, wherein The second color and the second color are in contrast with each other. The electronic device of claim 17, wherein the color changing layer is integrally formed with the photochromic material in an injection manner. The electronic device of claim 17, further comprising a light emitting module, wherein when the elastic switch is triggered, the light emitting module provides a light source for displaying the pattern. Furthermore, a light sensor is electrically connected to the circuit board. When the light sensor senses ultraviolet light, the light sensor controls the light emitting module to stop providing the light source. 2 5 · For example, the patent scope is 17 The electronic device of the item includes a non-functional bottom plate, and the elastic bottom plate has a '~ button area and a 200845073 W3402PA, a non-key area, and the photosensitive button structures are disposed in the button area. The electronic device of claim 25, wherein the keyboard further comprises a light shielding layer disposed in the non-key area such that the light source provided by the light emitting module is emitted from the button area. The electronic device of the button structure comprises: a keyboard, comprising a plurality of photosensitive button structures, wherein each of the light-reducing button structures comprises: a button body, the component material of the button body comprises: a photochromic material; and an impervious The light layer partially covers the button body, and the opaque layer has a hollowed out region, and the hollowed out region forms a pattern, wherein the photochromic material When irradiated by ultraviolet light, having a first color, when the photochromic material is irradiated by ultraviolet light, the first color is converted into a second color, and the pattern is visualized under ultraviolet light; ..., a circuit board , disposed under the keyboard; i plurality of elastic switches are disposed on the circuit board, respectively, under the structure of the photosensitive button structure of the deer, and the corresponding photosensitive button structure = hair; and a display component The circuit board is coupled to the board to display a message corresponding to the elastic switch that is triggered when the elastic opening is triggered. 28. The electronic device according to claim 27, wherein when the ultraviolet light is irradiated, the photochromic material is covered by the second color 20 200845073 W3402PA 29. As described in claim 27 The electronic device, wherein the photosensitive button structure further comprises: a back printing layer disposed at a bottom of the button body; and a protective layer covering the opaque layer and the button body. 30. The electronic device of claim 27, wherein the opaque layer has a third color different from the second color. The electronic device of claim 30, wherein the third color and the second color are mutually contrasting colors. 32. The electronic device of claim 27, wherein the button system and the photochromic material are integrally formed in an injection manner. 33. The electronic device of claim 27, further comprising an illumination module that provides a light source that visualizes the pattern when the flexible switch is triggered. 34. The electronic device of claim 33, further comprising a light sensor electrically connected to the circuit board, wherein the light sensor controls the light when the light sensor senses ultraviolet light The module stops providing the light source. The electronic device of claim 27, wherein the keyboard further comprises a resilient bottom plate, the resilient bottom plate having a button area and a non-key area, wherein the photosensitive key structures are disposed in the button area. The electronic device of claim 35, wherein the keyboard further comprises a light shielding layer disposed in the non-key area, such that the light source provided by the light emitting modules is emitted from the button area. twenty one