Touch control type light-emitting key and touch control type light-emitting function key column thereof

Abstract

The invention discloses a touch control type light-emitting key and a touch control type light-emitting function key column thereof. The touch control type light-emitting key comprises a circuit substrate, a first anti-dazzling screen, a first light guide sheet, a second anti-dazzling screen and a second light guide sheet. The circuit substrate is provided with a first light-emitting unit and a second light-emitting unit which provide a first illumination light beam and a second illumination light beam respectively. The first anti-dazzling screen is provided with character holes. The first light guide sheet is arranged between the circuit substrate and the first anti-dazzling screen and used for guiding the first illumination light beam to penetrate through the character broken hole. The second anti-dazzling screen is located above the first anti-dazzling screen and provided with an opening corresponding to the character broken hole. And the second light guide sheet is arranged between the second anti-dazzling screen and the first anti-dazzling screen and is used for guiding the second illumination light beam to be projected to the opening. According to the light-emitting keyboard, the design texture of the light-emitting keyboard applied by the touch-control light-emitting keys and the touch-control light-emitting function key column can be improved, the reflection and absorption times during light transmission are effectively increased so as to prevent light from being transmitted to other light guide bodies, and the design purpose of no light leakage is achieved.

Description

Technical Field

[0001] The present invention relates to a touch - type light - emitting button and a touch - type light - emitting function key array, and in particular to a touch - type light - emitting button and a touch - type light - emitting function key array that can effectively isolate light leakage and are easy to assemble. Background Art

[0002] With the progress of technology, computer devices often design a light - emitting touch module composed of a plurality of operation buttons on the input interface. The light - emitting touch module includes a corresponding number of button groups, a light - guiding unit, and a light - emitting unit. The light - guiding unit is located above the button groups, and the light - emitting unit is arranged beside the light - guiding unit to provide lateral illumination. The light - guiding units are small in volume and are spaced from each other. They need to be separately installed on the button groups, and attention should be paid to whether they are correctly aligned with the corresponding light - emitting units and the adjacent light - guiding units are spaced a predetermined distance apart, making the assembly more difficult. Even if a plurality of light - guiding units are made into an integrally formed structure, traditional related designs are difficult to effectively avoid light leakage between adjacent light - guiding units. That is, the illumination light emitted when a certain operation button is triggered will leak to the adjacent un - triggered operation buttons, making the traditional light - emitting touch module unable to provide a better user experience. Therefore, how to design a light - guiding sheet that can prevent light leakage, is easy to assemble, and can be applied to a plurality of operation buttons arranged in a strip is one of the development goals of the related institutional design industry. Summary of the Invention

[0003] In view of the problems in the prior art, the present invention provides a touch - type light - emitting button and a touch - type light - emitting function key array to solve the above problems.

[0004] Therefore, the technical problem to be solved by the present invention is to provide a touch - type light - emitting button, which includes: A circuit board, on which a first light - emitting unit and a second light - emitting unit are provided. The first light - emitting unit provides a first illumination beam, and the second light - emitting unit provides a second illumination beam with a color different from that of the first illumination beam; A first light - shielding sheet, which has character perforations; A first light - guiding sheet, which is arranged between the circuit board and the first light - shielding sheet and is used to guide the first illumination beam through the character perforations; A second light - shielding sheet, which is located above the first light - shielding sheet and has an opening corresponding to the character perforations; and A second light - guiding sheet, which is arranged between the second light - shielding sheet and the first light - shielding sheet and is used to guide the second illumination beam to project onto the opening when the first illumination beam passes through the character perforations and the opening.

[0005] As an alternative technical solution, the opening is a circular opening, a polygonal opening or an irregular opening, the opening is located above the character perforation, and the opening area of the opening is larger than the maximum contour dimension of the character perforation.

[0006] As an alternative technical solution, the touch - type light - emitting key further includes: A control unit, the control unit is electrically connected to the circuit board, and when the first light - emitting unit is activated to output the first illumination beam and a touch signal is received, the control unit activates the second light - emitting unit to output the second illumination beam.

[0007] As an alternative technical solution, the touch - type light - emitting key further includes: A light - transmissive cover, the light - transmissive cover is disposed above the second light - shielding sheet, and the light - transmissive cover has a touch area corresponding to the character perforation; and A touch module, the touch module is electrically connected to the control unit and is adjacent to the light - transmissive cover, and the touch module is used to output the touch signal when the touch area is actuated.

[0008] As an alternative technical solution, the touch - type light - emitting key further includes: A first shielding sheet, the first shielding sheet shields between the second light - emitting unit and the first light - guiding sheet; and A second shielding sheet, the first shielding sheet shields between the first light - emitting unit and the second light - guiding sheet.

[0009] As an alternative technical solution, the first shielding sheet has mutually independent first hollowed - out areas and first avoiding areas, the second light - emitting unit is inserted into the first avoiding area, the first light - guiding sheet is disposed in the first hollowed - out area, and the first light - emitting unit is inserted into the first hollowed - out area to be adjacent to the first light - guiding sheet.

[0010] As an alternative technical solution, the second shielding sheet has mutually independent second hollowed - out areas and second avoiding areas, the first light - emitting unit is inserted into the second avoiding area, the second light - guiding sheet is disposed in the second hollowed - out area, and the second light - emitting unit is inserted into the second hollowed - out area to be adjacent to the second light - guiding sheet.

[0011] As an alternative technical solution, the touch - type light - emitting key further includes: A reflector, the reflector is disposed between the circuit board and the first light - guiding sheet.

[0012] As an alternative technical solution, the circuit board has a reflective coating.

[0013] The present invention also provides a touch - type light - emitting function key array, and the touch - type light - emitting function key array includes: A circuit board is provided with at least two first light-emitting units and at least two second light-emitting units. Each of the at least two first light-emitting units provides a first illumination beam, and each of the at least two second light-emitting units provides a second illumination beam whose color is different from that of the first illumination beam. One of the at least two first light-emitting units and the corresponding second light-emitting unit of the at least two second light-emitting units are arranged in pairs. A first light-shielding sheet having at least two character perforations. A second light-shielding sheet located above the first light-shielding sheet and having at least two openings corresponding to the at least two character perforations; and A light guide assembly comprising: A first light guide body including a first lower light guide unit and a first upper light guide unit. The first lower light guide unit is disposed between the first light-shielding sheet and the circuit board and is used to guide the corresponding first illumination beam provided by one of the first light-emitting units through the corresponding character perforation among the at least two character perforations. The first upper light guide unit is disposed between the second light-shielding sheet and the first light-shielding sheet and is used to guide the corresponding second illumination beam provided by the corresponding second light-emitting unit to be projected into the corresponding opening among the at least two openings when the one first light-emitting unit outputs the corresponding first illumination beam; and A second light guide body adjacent to and separated from the first light guide body, the second light guide body including a second lower light guide unit and a second upper light guide unit. The second lower light guide unit is disposed between the first light-shielding sheet and the circuit board and is used to guide the corresponding first illumination beam provided by another one of the at least two first light-emitting units through the corresponding character perforation among the at least two character perforations. The second upper light guide unit is disposed between the second light-shielding sheet and the first light-shielding sheet and is used to guide the corresponding second illumination beam provided by the corresponding second light-emitting unit among the at least two second light-emitting units to be projected into the corresponding opening among the at least two openings when the another first light-emitting unit outputs the corresponding first illumination beam.

[0014] As an optional technical solution, the first lower light guide unit and the second lower light guide unit form a first light guide sheet, and the first upper light guide unit and the second upper light guide unit form a second light guide sheet.

[0015] As an optional technical solution, the first light guide sheet further includes a bridging portion having a first section and a second section that are bent relative to each other. The first section is connected between the first lower light guide unit and the second section, and the second section is connected between the second lower light guide unit and the first section.

[0016] As an alternative technical solution, any one of the at least two openings is a circular opening, a polygonal opening or an irregular opening, and each opening is located above the corresponding character perforation in the at least two character perforations, and the opening area of any one of the openings is greater than the maximum contour dimension of the corresponding character perforation.

[0017] As an alternative technical solution, the touch-type light-emitting function key array further includes: A control unit, which is electrically connected to the circuit board. When the at least two first light-emitting units are activated to output the first illumination beam and a touch signal is received, the control unit causes the second light-emitting unit corresponding to the touch signal among the at least two second light-emitting units to output the second illumination beam.

[0018] As an alternative technical solution, the touch-type light-emitting function key array further includes: A light-transmitting cover, which is disposed above the second light-shielding sheet, and the light-transmitting cover has at least two touch areas corresponding to the at least two character perforations; and A touch module, which is electrically connected to the control unit and is adjacent to the light-transmitting cover. The touch module is used to output the touch signal when one of the at least two touch areas is activated, so as to drive the second light-emitting unit associated with the activated touch area to output the second illumination beam.

[0019] As an alternative technical solution, the touch-type light-emitting function key array further includes: A first shielding sheet, which shields between the at least two second light-emitting units and the first light guide plate; and A second shielding sheet, which shields between the at least two first light-emitting units and the second light guide plate.

[0020] As an alternative technical solution, the first shielding sheet covers the periphery of the first light guide plate.

[0021] As an alternative technical solution, the second shielding sheet covers the periphery of the second light guide plate.

[0022] As an alternative technical solution, the touch-type light-emitting function key array further includes: A reflector, which is disposed on the circuit board.

[0023] As an alternative technical solution, the circuit board has a reflective coating.

[0024] Compared with the prior art, the backlight module design of the present invention has a multi-key light guide plate with multiple light guide bodies and bridging portions. The multiple light guide bodies are adjacent to each other and have intervals, and the bridging portions are connected to adjacent light guide bodies so that the multi-key light guide plate can be easily assembled. The light guide bodies can be designed in shapes such as rectangular structures, diamond structures, circular structures, polygonal structures, etc. The bridging portions can be designed in various styles, such as C-shaped structures, S-shaped structures, W-shaped structures, M-shaped structures, or concave-convex structures. The bridging portions are further divided into multiple sections that are bent relative to each other, and the bridging portions are connected to the light guide bodies in a relatively bent manner. Therefore, the multi-key light guide plate has a circuitous bridging portion designed between adjacent light guide bodies, and its width is approximately 0.1 mm to 2 mm, which can effectively increase the number of reflections and absorptions during light transmission to block the light from being transmitted to other light guide bodies, achieving the design purpose of no light leakage. Furthermore, the present invention can also design a multilayer stack of light-shielding sheets and light guide sheets in the touch-type light-emitting button, and configure multiple light-emitting units corresponding to the number of layers of the light-shielding sheets and light guide sheets, so that the touch-type light-emitting button can not only emit backlight illumination during standby, but also emit another type of prompt illumination different from the backlight illumination when being pressed and triggered, providing a lighting interaction function; correspondingly, the present invention can further apply the multi-key light guide plate to a touch-type light-emitting function key array. All function keys in the touch-type light-emitting function key array emit backlight illumination during standby, and can emit another type of prompt illumination different from the backlight illumination when a specific function key is pressed and triggered, thereby enhancing the design texture of the touch-type light-emitting button and the light-emitting keyboard to which the touch-type light-emitting function key array is applied.

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but it is not intended to limit the present invention. Brief Description of the Drawings

[0026] Figure 1 It is a partial cross-sectional schematic view of the structure of the input device according to an embodiment of the present invention.

[0027] Figure 2 It is a schematic diagram of the multi-key light guide plate according to the first embodiment of the present invention.

[0028] Figure 3 It is a schematic diagram of the multi-key light guide plate according to the second embodiment of the present invention.

[0029] Figure 4 It is a schematic diagram of the multi-key light guide plate according to the third embodiment of the present invention.

[0030] Figure 5 It is a schematic diagram of the multi-key light guide plate according to the fourth embodiment of the present invention.

[0031] Figure 6 It is a schematic diagram of the multi-key light guide plate according to another embodiment of the present invention.

[0032] Figure 7It is a functional block diagram of the touch - type light - emitting button according to an embodiment of the present invention.

[0033] Figure 8 It is an exploded view of the components of the touch - type light - emitting button according to an embodiment of the present invention.

[0034] Figure 9 and Figure 10 It is a schematic cross - sectional view of the touch - type light - emitting button according to an embodiment of the present invention at different usage stages.

[0035] Figure 11 It is a schematic diagram of the first light - shielding sheet according to an embodiment of the present invention.

[0036] Figure 12 It is a schematic diagram of the second light - shielding sheet according to an embodiment of the present invention.

[0037] Figure 13 It is a schematic diagram of the first light - guiding sheet and the first shielding sheet according to an embodiment of the present invention.

[0038] Figure 14 It is a schematic diagram of the second light - guiding sheet and the second shielding sheet according to an embodiment of the present invention.

[0039] Figure 15 It is a schematic diagram of the components of the touch - type light - emitting function key array according to an embodiment of the present invention.

[0040] Figure 16 It is a functional block diagram of the touch - type light - emitting function key array according to an embodiment of the present invention. Embodiment

[0041] To further understand the purpose, structure, features and functions of the present invention, it is described in detail with reference to the embodiments as follows.

[0042] Please refer to Figure 1 , Figure 1This is a partial cross-sectional schematic diagram of the structure of the input device according to an embodiment of the present invention. The input device 10 can be a touch panel or a touch device with a similar function. The input device 10 may include a backlight module 12 and an input interface 14. The input interface 14 can be various types of touch interfaces, which will not be described in detail herein. The backlight module 12 may optionally include a circuit board 16, a light-emitting element 18, and a light guide plate 20. The light-emitting element 18 can be disposed on the circuit board 16. The light guide plate 20 is disposed corresponding to the light-emitting element 18 to provide a side-in type backlight function. In addition, a reflective layer 24 can be selectively disposed between the light guide plate 20 and the circuit board 16. A shielding layer 26 can also be selectively disposed between the backlight module 12 and the input interface 14. The shielding layer 26 has a light-transmitting region 261 and a light-shielding region 262. Black or dark ink can be printed on the upper surface or the lower surface of the transparent film to form the light-shielding region 262, and the region of the transparent film without printing black or dark ink is the light-transmitting region 261; however, the actual application is not limited thereto. The component configuration of the input device 10 is not limited to the above embodiments and depends on the design requirements.

[0043] The light guide plate 20 can be a multi-key light guide plate, which means that the multi-key light guide plate 20 can be applied in combination with multiple operation buttons of the input interface 14. Therefore, the multi-key light guide plate 20 can have multiple light guide bodies to be respectively disposed at positions corresponding to the respective operation buttons, and the multiple light guide bodies are respectively aligned with the multiple light-emitting elements 18; each light-emitting element 18 can be a single-color or multi-color light-emitting unit. In addition, in order to meet the design requirements of connecting multiple light guide bodies and isolating the light interference between adjacent operation buttons, the present invention further utilizes an air isolation and bridging design, so that the multi-key light guide plate 20 can be applied to the backlight module 12 and its input device 10 to effectively isolate the light leakage between the operation buttons.

[0044] Please refer to Figure 2 , Figure 2Schematic diagram of the multi-key light guide plate 20 according to the first embodiment of the present invention. The multi-key light guide plate 20 may at least include a first light guide body 28, a second light guide body 30, and a bridging portion 32. The second light guide body 30 is adjacent to and separated from the first light guide body 28. The bridging portion 32 may be connected between the first light guide body 28 and the second light guide body 30. The multi-key light guide plate 20 may also selectively have a dot area 22 disposed on the first light guide body 28 and / or the second light guide body 30 for guiding light to illuminate corresponding symbols 141 on the input interface 14. The dot area 22 may be selectively disposed on the top or bottom surface of the first light guide body 28 and / or the second light guide body 30, and its structure may be a micro prism or white dot printing, but the actual application is not limited thereto. Generally, the bridging portion 32, the first light guide body 28, and the second light guide body 30 are made of the same material and are integrally formed, but the actual application is not limited thereto. The number and connection positions of the first light guide body 28, the second light guide body 30, and the bridging portion 32 are also not limited to the embodiment shown in the figure, and may depend on the size of the backlight module 12 or the number of operation buttons on the input interface 14. For example, the multi-key light guide plate 20 is made of a light guide material, and the present invention can determine the overall length of the multi-key light guide plate 20 according to the characteristics of the light guide material to reduce or avoid structural deformation of the multi-key light guide plate 20 caused by the elongation of the bridging portion.

[0045] The bridging portion 32 may have a first section 34 and a second section 36 that are relatively bent. The first section 34 may be connected between the first light guide body 28 and the second section 36, and the second section 36 may be connected between the second light guide body 30 and the first section 34. As Figure 2 shown, in the present invention, the bridging portion 32 between the adjacent first light guide body 28 and the second light guide body 30 is designed in a bent shape, such as a C-shaped structure or a semi-circular structure, to increase the number of absorption and reflection times of light in the bridging portion 32, so as to prevent the light output by each light-emitting element 18 and entering the first light guide body 28 from being guided to the second light guide body 30.

[0046] In addition to the first section 34 and the second section 36 themselves being relatively bent structures, the multi-key light guide plate 20 also connects the first section 34 to the first light guide body 28 in a relatively bendable manner, and connects the second section 36 to the second light guide body 30 in a relatively bendable manner. In other words, the connection between the first section 34 and the first light guide body 28 (or the second section 36 and the second light guide body 30) can be an arc-shaped structure or a hook-shaped structure, which can effectively increase the number of absorption and reflection times of light in the first section 34 (or the second section 36) to prevent the light output by each light-emitting element 18 from being guided to other light guide bodies.

[0047] In addition, the connection between the first section 34 and the second section 36 may also present an arc-shaped structure, as Figure 2As shown, the arc-shaped structure can increase the number of absorption and reflection times when light is transmitted between the first section 34 and the second section 36; however, the connection between the first section 34 and the second section 36 is not limited to the above embodiments. Please refer to Figure 3 , Figure 3 which is a schematic diagram of the multi-key light guide plate 20A according to the second embodiment of the present invention. In each embodiment of the present invention, elements with the same numbers as those in other embodiments have the same structure and function, and will not be repeated here. The connection between the first section 34A and the second section 36A of the multi-key light guide plate 20A presents a corner structure, which is used to increase the number of absorption and reflection times when light is transmitted between the first section 34A and the second section 36A.

[0048] As Figure 2 and Figure 3 shown, both the first section 34 and the second section 36 (or the first section 34A and the second section 36A) are bent sections, which are used to increase the number of absorption and reflection times when light is transmitted in each section; however, the actual application is not limited to this. Please refer to Figure 4 , Figure 4 which is a schematic diagram of the multi-key light guide plate 20B according to the third embodiment of the present invention. Both the first section 34B and the second section 36B of the multi-key light guide plate 20B are straight sections; as long as the connection between the first section 34B and the first light guide body 28, the connection between the first section 34B and the second section 36B, and the connection between the second section 36B and the second light guide body 30 are arc-shaped structures or corner structures, the number of absorption and reflection times when light is transmitted between the first light guide body 28 and the second light guide body 30 can be increased.

[0049] Furthermore, as Figures 2 to 4 shown, the first section 34 and the second section 36 (or the first section 34A and the second section 36A, or the first section 34B and the second section 36B) are located outside the gap between the first light guide body 28 and the second light guide body 30; however, the actual application is not limited to this. Please refer to Figure 5 , Figure 5 which is a schematic diagram of the multi-key light guide plate 20C according to the fourth embodiment of the present invention. The first section 34C and the second section 36C of the multi-key light guide plate 20C can be straight sections or bent sections, the connection therebetween can present an arc-shaped structure or a corner structure, and they can also be connected to the first light guide body 28 and the second light guide body 30 respectively in a relatively bent manner and then extend into the gap between the first light guide body 28 and the second light guide body 30.

[0050] Please refer to again Figure 2, the multi-key light guide plate 20 may further include a light absorbing element 38 disposed in the gap between the first light guide body 28 and the second light guide body 30. The light output by the light emitting element 18 will increase the number of times of light absorption and reflection due to the tortuous path of the bridging portion 32 to block the light introduced into other light guide bodies; and the light absorbing element 38 can be filled in the gap between the adjacent first light guide body 28 and the second light guide body 30, which can further improve the light leakage isolation effect of the multi-key light guide plate 20. The material of the light absorbing element 38 can be determined according to the design requirements; the light absorbing element 38 can completely fill the gap between the first light guide body 28 and the second light guide body 30, or can leave some gaps slightly, and its installation method depends on the light leakage isolation intensity of the multi-key light guide plate 20.

[0051] Please refer to Figure 6 , Figure 6 is a schematic diagram of the multi-key light guide plate 20' according to another embodiment of the present invention. The shape of the bridging portion 32 of the present invention is not particularly limited, so Figure 6 the outer shape of the bridging portion 32 shown is slightly different from the illustrated embodiment above, and any bridging portion that meets the foregoing description can be applied to the multi-key light guide plate 20'. The bridging portion 32 may have opposite upper surface 40 and lower surface 42. The multi-key light guide plate 20' may coat or form a plurality of dot patterns 44 on the upper surface 40 and / or the lower surface 42, the purpose of which is to destroy the total reflection characteristic of light to prevent light leakage. Correspondingly, the multi-key light guide plate 20' can also selectively coat or form a plurality of dot patterns 44 on the upper and lower surfaces of the first light guide body 28 and / or the second light guide body 30. The material characteristics, distribution density and pattern of the dot patterns 44 are not limited to the illustrated embodiment.

[0052] As Figure 6 shown, in order to further improve the function of the bridging portion 32 to prevent light leakage, the present invention can further dispose a light shielding element 46 on the upper surface and / or the lower surface of the multi-key light guide plate 20'. The light shielding element 46 is made of a light shielding or light absorbing material; and an additional light absorbing coating 48 can be selectively disposed on the surface of the light shielding element 46 facing the multi-key light guide plate 20' to further improve the light shielding effect of the light shielding element 46. In addition, the present invention can further coat an adhesive layer 50 on the surface of the light shielding element 46 facing the multi-key light guide plate 20' to ensure that the light shielding element 46 can be closely attached to the multi-key light guide plate 20'.

[0053] Please refer to Figures 7 to 10 , Figure 7 is a functional block diagram of the touch light-emitting button 100 according to an embodiment of the present invention, Figure 8 is an exploded view of the components of the touch light-emitting button 100 according to an embodiment of the present invention, Figure 9 and Figure 10This is a schematic cross-sectional view of the touch-enabled illuminated button 100 according to an embodiment of the present invention at different usage stages. The touch-enabled illuminated button 100 may selectively include a circuit board 102, a first light-shielding sheet 104, a second light-shielding sheet 106, a first light guide sheet 108, a second light guide sheet 110, a reflective sheet 112, a first shielding sheet 114, a second shielding sheet 116, a light-transmissive cover 118, a touch module 120, and a control unit 122. The lamination sequence of the above optical elements is as follows Figure 8 shown; the touch module 120 and the control unit 122 are electronic control components and are only drawn in Figure 7 , which is hereby stated first for clarity.

[0054] Please refer to Figures 11 to 14 , Figure 11 This is a schematic diagram of the first light-shielding sheet 104 according to an embodiment of the present invention, Figure 12 This is a schematic diagram of the second light-shielding sheet 106 according to an embodiment of the present invention, Figure 13 This is a schematic diagram of the first light guide sheet 108 and the first shielding sheet 114 according to an embodiment of the present invention, Figure 14 This is a schematic diagram of the second light guide sheet 110 and the second shielding sheet 116 according to an embodiment of the present invention. The circuit board 102 may have a first light-emitting unit 124 and a second light-emitting unit 126. The first light-emitting unit 124 provides a first illumination beam B1. The second light-emitting unit 126 then provides a second illumination beam B2 whose color is different from that of the first illumination beam B1; for example, the first illumination beam B1 may be white light, and the second illumination beam B2 can be green light, depending on the design requirements. The first illumination beam B1 serves as the illumination light source of the touch-enabled illuminated button 100 in the standby state, and the second illumination beam B2 provides the illumination light source for visual feedback when the touch-enabled illuminated button 100 is pressed and triggered.

[0055] The first light-shielding sheet 104 may be disposed above the circuit board 102 and has a character perforation 128. The position of the character perforation 128 generally lies in the central block of the first light-shielding sheet 104, and its pattern depends on the position of the touch-enabled illuminated button 100 on the keyboard, such as the shape of a battery, the shape of a speaker, or the Fn character. The first light guide sheet 108 may be disposed between the circuit board 102 and the first light-shielding sheet 104 to guide the first illumination beam B1 through the character perforation 128, as shown in Figure 9As shown. The second light-shielding sheet 106 is located above the first light-shielding sheet 104 and has an opening 130 corresponding to the character perforation 128. The opening 130 can be designed in various shapes, such as a circular opening, a polygonal opening, or an irregular opening; as long as the opening 130 is directly above the character perforation 128 and the opening area of the opening 130 is larger than the maximum contour size of the character perforation 128 so that the second illumination beam B2 can illuminate the character perforation 128 and its surroundings, it meets the design purpose of the present invention. The second light guide plate 110 can be disposed between the second light-shielding sheet 106 and the first light-shielding sheet 104 to guide the second illumination beam B2 to be projected onto the opening 130 when the first illumination beam B1 passes through the character perforation 128 and the opening 130, that is, when the touch light-emitting button 100 is pressed and actuated, the color lights of the first illumination beam B1 and the second illumination beam B2 will be emitted simultaneously, as Figure 10 shown.

[0056] In addition, the first shielding sheet 114 can have a first hollowed-out area 132 and a first avoidance area 134 that are independent of each other. The second light-emitting unit 126 is inserted into the first avoidance area 134, and the first light guide plate 108 is disposed in the first hollowed-out area 132, and the first light-emitting unit 124 is also inserted into the first hollowed-out area 132 to be adjacent to the first light guide plate 108; as Figure 13 shown, the first shielding sheet 114 will block between the second light-emitting unit 126 and the first light guide plate 108. The first illumination beam B1 provided by the first light-emitting unit 124 can be transmitted to the first light-shielding sheet 104 via the first light guide plate 108 that is also in the first hollowed-out area 132, and the second illumination beam B2 provided by the second light-emitting unit 126 is blocked by the first avoidance area 134 and will not enter the first light guide plate 108.

[0057] Correspondingly, the second shielding sheet 116 can have a second hollowed-out area 136 and a second avoidance area 138 that are independent of each other. The first light-emitting unit 124 can be inserted into the second avoidance area 138. The second light guide plate 110 is disposed in the second hollowed-out area 136, and the second light-emitting unit 126 is also inserted into the second hollowed-out area 136 to be adjacent to the second light guide plate 110; as Figure 14 shown, the second shielding sheet 116 will block between the first light-emitting unit 124 and the second light guide plate 110. The second illumination beam B2 provided by the second light-emitting unit 126 can be transmitted to the second light-shielding sheet 106 via the second light guide plate 110 that is also in the second hollowed-out area 136, and the first illumination beam B1 provided by the first light-emitting unit 124 is blocked by the second avoidance area 138 and will not enter the second light guide plate 110.

[0058] In addition, the light-transmissive cover 118 can be disposed above the second light-shielding sheet 106 and has a touch area 140 corresponding to the character perforations 128 and the openings 130. The light-transmissive cover 118 covers the internal electronic and optical components of the touch-operated illuminated button 100 to provide protection functions such as dust and water resistance; the touch area 140 can be defined as the central area of the light-transmissive cover 118, but the actual application is not limited thereto. The reflective sheet 112 is an optional component, which is disposed between the circuit board 102 and the first light guide plate 108 to improve the luminous brightness of the touch-operated illuminated button 100; in other variant embodiments of the present invention, a reflective coating (not shown in the drawings) can also be provided on the upper surface of the circuit board 102 as the reflective sheet 112, which can also effectively improve the luminous brightness of the touch-operated illuminated button 100.

[0059] Furthermore, the control unit 122 can be electrically connected to the first light-emitting unit 124 and the second light-emitting unit 126 of the circuit board 102, and the touch module 120 is electrically connected to the control unit 122 and is adjacent to the light-transmissive cover 118. As Figure 9 shown, when the touch-operated illuminated button 100 is in the standby state without being pressed and triggered, the control unit 122 drives the first light-emitting unit 124 to emit a first illumination beam B1, and the first illumination beam B1 passes through the character perforations 128 of the first light-shielding sheet 104, the second light guide plate 110, the openings 130 of the second light-shielding sheet 106, and the light-transmissive cover 118 under the guidance of the first light guide plate 108; the user can see that the character perforations 128 of the touch-operated illuminated button 100 present the color of the first illumination beam B1, and at this time, the second light-emitting unit 126 does not output the second illumination beam B2.

[0060] If the touch area 140 of the touch-operated illuminated button 100 is pressed, the touch module 120 can output a corresponding touch signal, and the control unit 122 will further drive the second light-emitting unit 126 to emit a second illumination beam B2, and the second illumination beam B2 can pass through the openings 130 of the second light-shielding sheet 106 and the light-transmissive cover 118 under the guidance of the second light guide plate 110; the user can see that the touch-operated illuminated button 100 presents the colors of both the first illumination beam B1 and the second illumination beam B2 at the same time. For example, the outline of the character perforation 128 presents the color of the first illumination beam B1, and the outline of the opening 130 presents the color of the second illumination beam B2, as Figure 10 shown.

[0061] Please refer to Figure 15 and Figure 16 , Figure 15 which is a schematic diagram of the components of the touch-operated illuminated function key array 150 according to an embodiment of the present invention, Figure 16It is a functional block diagram of the touch - type light - emitting function key column 150 according to an embodiment of the present invention. The touch - type light - emitting function key column 150 may include a circuit board 152, a first light - shielding sheet 154, a second light - shielding sheet 156, a light - guiding assembly 158, a light - transmissive cover 160, a first shielding sheet 162, a second shielding sheet 164, a reflective sheet 166, a touch module 168, and a control unit 170. The circuit board 152 may have a plurality of first light - emitting units 172 and a plurality of second light - emitting units 174. Each of the first light - emitting units 172 provides a first illumination beam, and each of the second light - emitting units 174 provides a second illumination beam whose color is different from that of the first illumination beam; for example, the first illumination beam and the second illumination beam may be white light and green light respectively, but the actual application is not limited thereto. In this embodiment, each first light - emitting unit 172 is arranged in pairs with another corresponding second light - emitting unit 174, and the interval between each pair of light - emitting units (including a first light - emitting unit 172 and a corresponding second light - emitting unit 174) and another adjacent pair of light - emitting units is determined according to the function key requirements on the touch - type light - emitting function key column 150. The first light - shielding sheet 154 is located on the circuit board 152 and may have a plurality of character perforations 176, and their positions respectively correspond to multiple pairs of light - emitting units. The second light - shielding sheet 156 is located above the first light - shielding sheet 154 and has a plurality of openings 178 corresponding to the character perforations 176. The number of the character perforations 176 and the openings 178 is determined according to the number of the first light - emitting units 172 or the second light - emitting units 174.

[0062] The light guide assembly 158 may include a plurality of light guide bodies, such as a first light guide body 180 and a second light guide body 182. The light guide assembly 158 of this embodiment further includes other light guide bodies, but only the first light guide body 180 and the second light guide body 182 are taken as examples for illustration, and the total number of light guide bodies corresponds to the number of character perforations 176 or openings 178. The first light guide body 180 may have a first lower light guide unit 184 and a first upper light guide unit 186. The first lower light guide unit 184 may be disposed between the first light shielding sheet 154 and the circuit board 152 to guide the first illumination beam of the first light emitting unit 172 through the corresponding character perforation 176 (such as character F1). The first upper light guide unit 186 is disposed between the second light shielding sheet 156 and the first light shielding sheet 154 to guide the second illumination beam of the second light emitting unit 174 to be projected onto the corresponding opening 178 (the opening 178 associated with character F1) when the first light emitting unit 172 outputs the first illumination beam through the character perforation 176 (such as character F1). The second light guide body 182 may be adjacent to and separated from the first light guide body 180, and includes a second lower light guide unit 188 and a second upper light guide unit 190. The second lower light guide unit 188 may be disposed between the first light shielding sheet 154 and the circuit board 152 to guide the first illumination beam of the first light emitting unit 172 through the corresponding character perforation 176 (such as character F2). The second upper light guide unit 190 is disposed between the second light shielding sheet 156 and the first light shielding sheet 154 to guide the second illumination beam of the second light emitting unit 174 to be projected onto the corresponding opening 178 (the opening 178 associated with character F2) when the first light emitting unit 172 outputs the first illumination beam through the character perforation 176 (such as character F2).

[0063] As Figure 15 can be seen, each first light guide body 180 and an adjacent second light guide body 182 may be connected to each other at intervals to form a light guide sheet. For example, the first lower light guide unit 184 and the second lower light guide unit 188 are integrally combined with each other to form a first light guide sheet 192, and the first upper light guide unit 186 and the second upper light guide unit 190 are integrally combined with each other to form a second light guide sheet 194. In a possible implementation aspect of the present invention, the first light guide sheet 192 may include a plurality of bridging portions 200 having relatively bent first sections 196 and second sections 198, and each bridging portion 200 is disposed between adjacent first light guide bodies 180 and second light guide bodies 182. The first section 196 of each bridging portion 200 is connected between the first lower light guide unit 184 and the second section 198, and its second section 198 is connected between the second lower light guide unit 188 and the first section 196. Correspondingly, the second light guide sheet 194 will also have similar bridging portions, which will not be repeated here.

[0064] The first shielding sheet 162 can be wrapped around the periphery of the first light guide sheet 192 to block between the second light-emitting unit 174 and the first light guide sheet 192; the second shielding sheet 164 is wrapped around the periphery of the second light guide sheet 194 to block between the first light-emitting unit 172 and the second light guide sheet 194. In this embodiment, the first shielding sheet 162 is only provided at the end edge of the first light guide sheet 192 adjacent to the second light-emitting unit 174, and the second shielding sheet 164 is only provided at the end edge of the second light guide sheet 194 adjacent to the first light-emitting unit 172, but the actual application is not limited to this. For example, the first shielding sheet 162 can also completely wrap the first light guide sheet 192; as long as it can block between the first light guide sheet 192 and the second light-emitting unit 174 and does not affect the first illumination beam of the first light-emitting unit 172 from entering the first light guide sheet 192, it meets the design purpose of the first shielding sheet 162 of the present invention. The second shielding sheet 164 also has the same design requirements and will not be repeated here.

[0065] The light-transmissive cover 160 is disposed on the second light-shielding sheet 156 and has a plurality of touch areas 202 corresponding to the character perforations 176 for the user to press and touch to activate the corresponding function keys on the touch-activated light-emitting function key array 150. The reflective sheet 166 is an optional component and is disposed on the circuit board 152; as described in the previous embodiment, the touch-activated light-emitting function key array 150 can also have a reflective coating (not shown in the drawings) provided on the upper surface of the circuit board 152 as the reflective sheet 166, and its variation depends on the design requirements. The control unit 170 is electrically connected to the first light-emitting unit 172 and the second light-emitting unit 174 of the circuit board 152. The touch module 168 is electrically connected to the control unit 170 and is adjacent to the light-transmissive cover 160.

[0066] When the touch-activated light-emitting function key array 150 is not pressed and activated, the control unit 170 drives the corresponding first light-emitting units 172 of all function keys to emit first illumination beams, and the first illumination beams are guided by the first light guide sheet 192 and pass through the character perforations 176 of the first light-shielding sheet 154; different function keys on the touch-activated light-emitting function key array 150 have character perforations 176 of different shapes, and at this time, the colors of the first illumination beams are all presented. When one or more function keys of the touch-activated light-emitting function key array 150 (equivalent to one or more touch areas 202 of the light-transmissive cover 160 are activated) are pressed, the touch module 168 can output corresponding touch signals, and the control unit 170 further drives the corresponding second light-emitting units 174 of the activated function keys to emit second illumination beams, and the second illumination beams can be guided by the second light guide sheet 194 and pass through the corresponding openings 178 of the second light-shielding sheet 156, so the activated function keys can simultaneously present the colors of the first illumination beams and the second illumination beams.

[0067] In summary, the backlight module design of the present invention has a multi-key light guide plate with multiple light guide bodies and bridging parts. The multiple light guide bodies are adjacent to each other and have intervals, and the bridging parts are connected to the adjacent light guide bodies so that the multi-key light guide plate can be easily assembled. The light guide bodies can be designed in shapes such as rectangular structures, diamond structures, circular structures, polygonal structures, etc. The bridging parts can be designed in various styles, such as C-shaped structures, S-shaped structures, W-shaped structures, M-shaped structures or concave-convex structures. The bridging parts are further divided into multiple sections that are bent relative to each other, and the bridging parts are connected to the light guide bodies in a relatively bent manner. Therefore, the multi-key light guide plate is designed with a circuitous bridging part between adjacent light guide bodies, and its width is approximately 0.1 mm to 2 mm, which can effectively increase the number of reflections and absorptions during light transmission to block the light from being transmitted to other light guide bodies, achieving the design purpose of no light leakage. Furthermore, the present invention can also design multiple layers of stacked light-shielding sheets and light guide sheets in the touch light-emitting button, and configure multiple light-emitting units corresponding to the number of layers of the light-shielding sheets and light guide sheets, so that the touch light-emitting button can not only emit backlight illumination during standby, but also emit another prompt illumination different from the backlight illumination when pressed, providing a lighting interaction effect; correspondingly, the present invention can further apply the multi-key light guide plate to the touch light-emitting function key array. All function keys in the touch light-emitting function key array emit backlight illumination during standby, and another prompt illumination different from the backlight illumination can be emitted when a specific function key is pressed, thereby enhancing the design texture of the touch light-emitting button and the touch light-emitting keyboard applied by the touch light-emitting function key array.

[0068] Of course, the present invention can also have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes and deformations should all fall within the protection scope of the appended claims of the present invention.

Claims

1. A touch - type light - emitting button, characterized in that, The touch - type light - emitting button includes: A circuit board, on which a first light - emitting unit and a second light - emitting unit are provided. The first light - emitting unit provides a first illumination beam, and the second light - emitting unit provides a second illumination beam with a color different from that of the first illumination beam; A first light - shielding sheet, which has a character perforation; A first light - guiding sheet, which is arranged between the circuit board and the first light - shielding sheet, and the first light - guiding sheet is used to guide the first illumination beam through the character perforation; A second light - shielding sheet, which is located above the first light - shielding sheet, and the second light - shielding sheet has an opening corresponding to the character perforation; And A second light - guiding sheet, which is arranged between the second light - shielding sheet and the first light - shielding sheet, and the second light - guiding sheet is used to guide the second illumination beam to be projected onto the opening when the first illumination beam passes through the character perforation and the opening.

2. The touch light-emitting button according to claim 1, wherein The opening is a circular opening, a polygonal opening or an irregular - shaped opening. The opening is located above the character perforation, and the opening area of the opening is larger than the maximum contour size of the character perforation.

3. The touch-sensitive light-emitting button according to claim 1, characterized in that, The touch - type light - emitting button further includes: A control unit, which is electrically connected to the circuit board. When the first light - emitting unit is activated to output the first illumination beam and a touch signal is received, the control unit activates the second light - emitting unit to output the second illumination beam.

4. The touch light-emitting button according to claim 3, wherein, The touch - type light - emitting button further includes: A light - transmissive cover member, which is arranged above the second light - shielding sheet, and the light - transmissive cover member has a touch area corresponding to the character perforation; and A touch module, which is electrically connected to the control unit and is adjacent to the light - transmissive cover member, and the touch module is used to output the touch signal when the touch area is triggered.

5. The touch light-emitting button according to claim 1, wherein The touch - type light - emitting button further includes: A first shielding sheet, which shields between the second light - emitting unit and the first light - guiding sheet; and A second shielding sheet, which shields between the first light - emitting unit and the second light - guiding sheet.

6. The touch light-emitting button according to claim 5, characterized in that The first shielding sheet has a first hollowed - out area and a first avoiding area that are independent of each other. The second light - emitting unit is inserted into the first avoiding area, the first light - guiding sheet is arranged in the first hollowed - out area, and the first light - emitting unit is inserted into the first hollowed - out area to be adjacent to the first light - guiding sheet.

7. The touch light-emitting button according to claim 5, wherein, The second shielding sheet has a second hollowed - out area and a second avoiding area that are independent of each other. The first light - emitting unit is inserted into the second avoiding area, the second light - guiding sheet is arranged in the second hollowed - out area, and the second light - emitting unit is inserted into the second hollowed - out area to be adjacent to the second light - guiding sheet.

8. The touch light-emitting button according to claim 1, wherein, The touch - type light - emitting button further includes: A reflective sheet, which is arranged between the circuit board and the first light - guiding sheet.

9. The touch light-emitting button according to claim 1, wherein, The circuit board has a reflective coating.

10. A touch-type light-emitting function key array, characterized in that, The touch - type light - emitting function key column includes: A circuit board, on which at least two first light-emitting units and at least two second light-emitting units are provided. Each of the at least two first light-emitting units provides a first illumination beam, and each of the at least two second light-emitting units provides a second illumination beam with a color different from that of the first illumination beam. One of the at least two first light-emitting units and the corresponding second light-emitting unit of the at least two second light-emitting units are arranged in pairs; A first light-shielding sheet, which has at least two character perforations; A second light-shielding sheet, which is located above the first light-shielding sheet and has at least two openings corresponding to the at least two character perforations; and A light guide combination, which includes: A first light guide body, which includes a first lower light guide unit and a first upper light guide unit. The first lower light guide unit is arranged between the first light-shielding sheet and the circuit board, and is used to guide the corresponding first illumination beam provided by one of the first light-emitting units to pass through the corresponding character perforation among the at least two character perforations. The first upper light guide unit is arranged between the second light-shielding sheet and the first light-shielding sheet, and is used to guide the corresponding second illumination beam provided by the corresponding second light-emitting unit to be projected onto the corresponding opening among the at least two openings when the corresponding first illumination beam is output by one of the first light-emitting units; And A second light guide body, which is adjacent to and separated from the first light guide body. The second light guide body includes a second lower light guide unit and a second upper light guide unit. The second lower light guide unit is arranged between the first light-shielding sheet and the circuit board, and is used to guide the corresponding first illumination beam provided by another first light-emitting unit of the at least two first light-emitting units to pass through the corresponding character perforation among the at least two character perforations. The second upper light guide unit is arranged between the second light-shielding sheet and the first light-shielding sheet, and is used to guide the corresponding second illumination beam provided by the corresponding second light-emitting unit among the at least two second light-emitting units to be projected onto the corresponding opening among the at least two openings when the another first light-emitting unit outputs the corresponding first illumination beam.

11. The touch-type light-emitting function key column according to claim 10, wherein, The first lower light guide unit and the second lower light guide unit form a first light guide sheet, and the first upper light guide unit and the second upper light guide unit form a second light guide sheet.

12. The touch-type light-emitting function key array according to claim 11, wherein The first light guide sheet further includes a bridging portion, which has a first section and a second section that are bent relatively. The first section is connected between the first lower light guide unit and the second section, and the second section is connected between the second lower light guide unit and the first section.

13. The touch-type light-emitting function key array according to claim 10, wherein Any one of the at least two openings is a circular opening, a polygonal opening or an irregular opening. Each opening is located above the corresponding character perforation among the at least two character perforations, and the opening area of the any one opening is larger than the maximum contour size of the corresponding character perforation.

14. The touch-type light-emitting function key array according to claim 10, wherein, The touch-type light-emitting function key column further includes: A control unit, electrically connected to the circuit board, which, when at least two of the first light-emitting units are activated to output the first illumination beam and a touch signal is received, causes the second light-emitting units corresponding to the touch signal among the at least two second light-emitting units to output the second illumination beam.

15. The touch-type light-emitting function key array according to claim 14, wherein, The touch-operated light-emitting function key array further includes: A light-transmitting cover member, disposed above the second light-shielding sheet, having at least two touch regions corresponding to the at least two character perforations; and A touch module, electrically connected to the control unit and adjacent to the light-transmitting cover member, which is configured to output the touch signal when one of the at least two touch regions is activated, so as to drive the second light-emitting unit associated with the activated touch region to output the second illumination beam.

16. The touch-type light-emitting function key array according to claim 11, wherein, The touch-operated light-emitting function key array further includes: A first shielding sheet, shielding between the at least two second light-emitting units and the first light guide plate; and A second shielding sheet, shielding between the at least two first light-emitting units and the second light guide plate.

17. The touch-type light-emitting function key column according to claim 16, wherein, The first shielding sheet covers the periphery of the first light guide plate.

18. The touch-type light-emitting function key array according to claim 16, wherein, The second shielding sheet covers the periphery of the second light guide plate.

19. The touch-operated light-emitting function key array according to claim 10, characterized in that, The touch-operated light-emitting function key array further includes: A reflective sheet, disposed on the circuit board.

20. The touch-type light-emitting function key array according to claim 10, wherein, The circuit board has a reflective coating.

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