TWI860543B - Luminous keyboard luminous module - Google Patents

Abstract

The present invention is related to a light-emitting module of a light-emitting keyboard, wherein a driving circuit board and a connecting mechanism are arranged on the bottom plate of a key unit, and a key cap is assembled on the connecting mechanism, and an elastic body is arranged between the driving circuit board and the key cap, so that the key cap drives the connecting mechanism to descend and squeeze the elastic body, and then the elastic body drives the key cap and the connecting mechanism to ascend and reset, and a light-emitting module is arranged between the key cap and the driving circuit board. , at least one micro-LED is arranged on the thin film circuit layer, and a light-guiding layer and a light-shielding dimming layer are stacked. The light-shielding dimming layer is a light-shielding area with a predetermined shape to shield at least one micro-LED, and at least one light-transmitting portion is arranged at the light-shielding area on the outer periphery of the elastic body and in the range of the key cap, so as to achieve the purpose of providing the bottom or periphery of the key cap with stable and soft bright light projection.

Description

Luminous keyboard luminous module

The present invention provides a light-emitting module for a light-emitting keyboard, in particular, a light-emitting module that can project soft light to the bottom and periphery of the key cap at the bottom of the key cap. The light-emitting module is provided between the key cap of the key unit and the driving circuit board, and the light-shielding and dimming layer of the light-emitting module is provided with a light-shielding area of a predetermined shape, and a light-transmitting portion is provided in the light-shielding area around the elastic body and the key cap range, so as to achieve the purpose of generating at least one color of soft light display or change from the bottom or periphery of the key cap.

According to the rapid development of electronic technology and information industry, all kinds of electronic products are developing towards light, thin, short, small and powerful functions. Computers, laptops, mobile Internet devices (MID), smart phones, tablet computers, etc. have become indispensable electronic products in modern people's daily life or work. Users and electronic products mostly use input devices such as mouse and keyboard to communicate. Among them, keyboard is the most convenient for inputting text, numbers or commands, and improves practical functions.

In order to enable the human eye to clearly see the symbols on each key in an environment with insufficient light, some industry players have introduced light guide plates and light source technology into the keyboard and developed a backlight keyboard with a backlight module. The light generated by the backlight module can be projected onto the back of each key cap to form a backlight effect, allowing users to clearly see the character symbols on the key cap for easy operation. The backlight keyboard currently on the market includes a key module and a backlight module, wherein the backlight module is a backlight module with a backlight module. There is a light guide plate, and a light source is provided on one side of the light guide plate, and the light emitting diode of the light source projects light toward the light guide plate so that the light guide plate emits light evenly. In addition, a reflective sheet is provided on the lower surface of the light guide plate to reflect the light emitted from the lower surface of the light guide plate back to the light guide plate, and a light shielding sheet corresponding to the key module is provided on the upper surface of the light guide plate, so that the light emitted by the light guide plate can pass through the light-transmitting part of the light shielding sheet and then be incident on the key cap corresponding to the key module to form a backlight.

However, the light source used in the backlight module can be divided into two types: direct-lit and side-lit. Since the side-lit type is easier to achieve a thin design, it is more widely used. However, when the light emitted by the LED is transmitted from the front end to the back end of the light guide plate, the brightness of the light will gradually attenuate, and the key character symbols corresponding to the back end of the light guide plate will have insufficient brightness. Therefore, in recent years, in order to solve the problem of uneven distribution of light transmitted by the light guide plate and insufficient average brightness, the relevant industry has developed a new type of backlight module. Multiple microstructures are formed on the bottom or reflective surface of the light guide plate, so that the light can change the path of the light through these microstructures when it is transmitted inside the light guide plate, so that the light guide plate can gather the light and evenly reflect it at each key. However, since the microstructure changes the path of the light, it will still cause some light loss, and the light reflected at each key will cause problems and troubles such as insufficient brightness or instability, which is the direction that the relevant manufacturers in this industry are eager to study and improve.

Therefore, in view of the above problems and deficiencies, the inventor collected relevant information, evaluated and considered various aspects, and used the years of experience accumulated in this industry, and after continuous creation and modification, he finally developed the invention patent of the luminous module of this luminous keyboard.

The main purpose of the present invention is that the luminous module of the luminous keyboard is to set a driving circuit board and a connecting mechanism on the bottom plate of the key unit, and a key cap is assembled on the connecting mechanism, and an elastic body is set between the driving circuit board and the key cap, so that the key cap drives the connecting mechanism to descend and squeeze the elastic body, and then the elastic body drives the key cap and the connecting mechanism to rise and reset, and the luminous module is set between the key cap and the driving circuit board, and at least one micro-light-emitting diode is set on the thin film circuit layer, and a light-guiding layer and a light-shielding and light-adjusting layer are stacked, and the light-shielding and light-adjusting layer is arranged on the thin film circuit layer. The light layer is a light-shielding area with a predetermined shape to shield at least one micro-LED, and at least one light-transmitting portion is provided at the light-shielding area on the outer periphery of the elastic body and in the range of the key cap, so as to achieve the purpose of providing the bottom or periphery of the key cap with stable and soft light projection, and also enable the bottom or periphery of the key cap to produce soft light, and at least one micro-LED can form at least one color light display or multiple color changes, etc., and the light-emitting module using micro-LED has the effect of being light and thin.

Another purpose of the present invention is to form a predetermined shape of the shading area on the surface of the shading and dimming layer by printing, gradual plating or electroplating, and the shading area can be formed into a predetermined shape of multiple circles, multiple ellipses, multiple rings, multiple frames, multiple rectangles, multiple diamonds, grids, clouds, nets or irregular shapes, and at least one light-transmitting portion corresponding to the bottom of the key cap is provided in the shading area.

Another object of the present invention is that the light-shielding dimming layer may include a first film sheet, a second film sheet stacked on the first film sheet, and a thin film sheet stacked on the second film sheet; the light-shielding dimming layer may also include a thin film sheet, a second film sheet stacked on the thin film sheet, and a first film sheet stacked on the second film sheet; or the light-shielding dimming layer may also include a second film sheet, a thin film sheet stacked on the second film sheet, and a The first film stacked on the film sheet can be stacked and arranged in various ways; the first film can be a white film formed by printing, gradual plating or electroplating; the second film can be a dark film (such as black, dark blue or dark green) formed by printing, gradual plating or electroplating; and the film can be a Mylar film or a translucent silicone film, a plastic film or a rubber film, etc.

Another purpose of the present invention is that the thin film circuit layer may include a conductive circuit board with a conductive circuit, a bottom film and a top film respectively disposed on two opposite surfaces of the conductive circuit board, and the surface of the conductive circuit board adjacent to the top film is provided with at least two metal contacts for electrical connection of at least one micro-LED, and a light-scattering and light-homogenizing body is provided on the surface of the conductive circuit board to cover at least one micro-LED and the outside of the two metal contacts, and the light-scattering and light-homogenizing body may be a material such as a light-transmitting waterproof glue or a light-transmitting silicone.

1: Button unit

11: Base plate

110:Through hole

12: Drive circuit board

121: Electrode contact

13:Connection mechanism

14: Keycaps

15: Elastic body

151:Touching part

2: Light-emitting module

21: Thin film circuit layer

211: Conductive circuit board

212: Bottom diaphragm

213: Top diaphragm

214:Metal contact

215: Astigmatism homogenizer

216: Luminous ink

22: Micro LEDs

23: Light-guiding layer

24: Shading and dimming layer

241: Shade area

2411:Reflective surface

2412: Shielded surface

242: light-transmitting part

243: First diaphragm

244: Second diaphragm

245: Film sheet

[Figure 1] is a partial three-dimensional appearance diagram of the keyboard of the present invention.

[Figure 2] is a partial three-dimensional exploded view of the keyboard of the present invention.

[Figure 3] is a partial side cross-sectional view of the keyboard of the present invention.

[Figure 4] is a partial side cross-sectional view of the light-emitting module of the present invention.

[Figure 5] is a partial side cross-sectional view of the thin film circuit layer of the present invention.

[Figure 6] is a partial side cross-sectional view of the first embodiment of the light-shielding and dimming layer of the present invention.

[Figure 7] is a partial side cross-sectional view of the second embodiment of the light-shielding and light-adjusting layer of the present invention.

[Figure 8] is a partial side cross-sectional view of the third embodiment of the light-shielding and light-adjusting layer of the present invention.

[Figure 9] is a side cross-sectional view of an embodiment of the light-shielding area of the light-shielding and light-adjusting layer of the present invention.

[Figure 10] is a top view of an embodiment of the shading area of the shading and dimming layer of the present invention.

In order to achieve the above-mentioned purpose and effect, the technical means and structure, implementation method, etc. adopted by the present invention are described in detail in the following figure for the preferred embodiment of the present invention, so as to facilitate a complete understanding.

Please refer to Figures 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10. It can be clearly seen from the figures that the light-emitting module of the light-emitting keyboard of the present invention includes a key unit 1 and a light-emitting module 2, wherein:

The key unit 1 includes a base plate 11, a driving circuit board 12 and a connecting mechanism 13 disposed on the base plate 11, a key cap 14 assembled on the connecting mechanism 13, and an elastic body 15 disposed between the driving circuit board 12 and the key cap 14. At least one through hole 110 is disposed on the base plate 11, and an electrode contact point may be disposed on the driving circuit board 12. 121 is located at the bottom of the key cap 14, and a contact part 151 is provided at the bottom of the elastic body 15 to drive the electrode contact 121 of the circuit board 12, so that the key cap 14 drives the connecting mechanism 13 to move downward longitudinally and squeeze the elastic body 15, and the elastic restoring force of the elastic body 15 can be used to drive the key cap 14 and the connecting mechanism 13 to rise and reset longitudinally.

The light-emitting module 2 includes a thin film circuit layer 21, at least one micro-LED 22 disposed on the thin film circuit layer 21, a light-guiding layer 23 stacked on the thin film circuit layer 21 and at least one micro-LED 22, and a light-shielding dimming layer 24 stacked on the light-guiding layer 23, and the light-shielding dimming layer 24 is provided with a light-shielding area 241 of a predetermined shape, which can be used to shield part of the light source of the at least one micro-LED 22, and at least one light-transmitting portion 242 is provided at the light-shielding area 241, which can be located at the bottom or peripheral range of the key cap 14.

The key unit 1 of the present invention can be provided with a light emitting module 2 between the key cap 14 and the driving circuit board 12, so that at least one micro light emitting diode 22 and at least one transparent portion 242 of the light shielding and light modulating layer 24 can be respectively located at the bottom or the periphery of the key cap 14, and the key cap 14 of the key unit 1 can be pressed to drive the elastic The body 15 touches the light module 2 with the touch part 151, and then touches the electrode contact 121 of the driving circuit board 12 to transmit the touch signal related to the key cap 14 to the preset host system, and at the same time, at least one micro light emitting diode 22 of the light module 2 is activated by the driving circuit board 12 to emit light and project light outward. The light source projected outward by the micro-LED 22 is guided by the light-guiding layer 23 and evenly distributed to the bottom of the light-shielding dimming layer 24, and projects uniform, bright and soft light outward to the bottom of the keycap 14 or the periphery of the keycap 14 through at least one transparent portion 242 of the light-shielding dimming layer 24, so as to achieve the purpose of providing the bottom or periphery of the keycap 14 with a stable light source to project bright and soft light, so that the bottom or periphery of the keycap 14 produces soft light, and at least one micro-LED 22 can project at least one color light display or multiple color changes, etc., and the light-emitting module 2 using at least one micro-LED 22 has the effect of being light and thin.

Furthermore, the light-shielding dimming layer 24 may include a first film sheet 243, a second film sheet 244 stacked on the first film sheet 243, and a film sheet 245 stacked on the second film sheet 244; the light-shielding dimming layer 24 may also include a film sheet 245, a second film sheet 244 stacked on the film sheet 245, and a first film sheet 243 stacked on the second film sheet 244; or the light-shielding dimming layer 24 may also include a second film sheet 244, a film sheet 245 stacked on the second film sheet 244, and a first film sheet 243 stacked on the film sheet 245, etc., in various stacking and arrangement modes; and the first film sheet 243 may be printed. The white film is formed by brushing, gradual plating or electroplating, which has the effect of reflecting the light in the light-guiding layer 23 and increasing the brightness. The second film 244 is a dark film (such as black, dark blue or dark green) that can be formed by printing, gradual plating or electroplating. That is, the second film 244 can be printed, gradual plating or electroplating on the surface of the second film 244, and then a plurality of predetermined shading areas 241 are formed on the transparent part 242. The plurality of shading areas 241 are respectively located below the key cap 14, and rings (circular rings, rectangular rings or polygonal rings, etc.) are respectively formed at each shading area 241 by printing, gradual plating or electroplating. ) reflective surface 2411, and shielding surface 2412 is formed inside each annular reflective surface 2411 by printing, gradual plating or electroplating, and each shielding surface 2412 can be formed into a predetermined shape such as a plurality of circles, a plurality of ellipses, a plurality of rings, a plurality of frames, a plurality of rectangles, a plurality of rhombuses, a grid, a cloud, a mesh or an irregular shape (please also refer to FIG. 10). By driving the circuit board 12 to activate the plurality of micro-LEDs 22 of the light-emitting module 2 to emit light and project light outward, the light projected outward by at least one micro-LED 22 is guided by the light-guiding layer 23 and evenly distributed to the shielding surface. At each shading area 241 of the light-adjusting layer 24, the shielding surface 2412 at each shading area 241 can also reflect the light source of each micro-LED 22 to the light-guiding layer 23 due to the gaps formed between the various shapes, thereby increasing the light intensity in the light-guiding layer 23. The light source is adjusted and softened through the light-guiding layer 23, and then the soft light is projected outward to the bottom of each key cap 14 through at least one transparent portion 242 of the shading area 241, so as to increase the brightness of the light display around each key cap 14, and the brightness is soft and not dazzling; and the above-mentioned film sheet 245 can be a mylar sheet or a transparent silicone film, a plastic film or a rubber film, etc.

Furthermore, the thin film circuit layer 21 can be a thin film made of plastic-related materials such as PET, PC, TPU or PMMA, and the thin film circuit layer 21 can include a conductive circuit board 211 with conductive circuits, a bottom film 212 and a top film 213 respectively disposed on two opposite surfaces of the conductive circuit board 211, and at least one or more luminescent inks 216 are printed on the top film 213 to increase the brightness and effect of the luminescence, and the surface of the conductive circuit board 211 adjacent to the top film 213 is provided with a conductive line. At least two metal contacts 214 are provided for electrical connection of at least one micro-LED 22, and a light-scattering and light-homogenizing body 215 is provided on the surface of the conductive circuit board 211 for covering at least one micro-LED 22 and the outside of the two metal contacts 214, so as to provide waterproof and anti-oxidation effects. The light-scattering and light-homogenizing body 215 can be made of a transparent waterproof glue or a transparent silicone material, and can direct the light projected upward and horizontally by at least one micro-LED 22 to about 360 degrees in all directions. Directional diffusion projection can make the light uniform and soft and guide it into the light-guiding layer 23; and the at least two metal contacts 214 provided on the surface of the conductive circuit board 211 can be made of tin, copper, silver or other alloy materials; As for the at least one micro-light-emitting diode 22, its height is less than 150 microns, its length is less than 400 microns, and its width is less than 250 microns.

The light-emitting module 2 can provide waterproof and anti-oxidation effects on the driving circuit board 12, and the bottom of the elastic body 15 can be combined (adhesive bonding or local hot-melt bonding can be used) and positioned on the surface of the light-emitting module 2, that is, when the key cap 14 of the key unit 1 is pressed, the elastic body 15 can be driven to contact the light-emitting module 2 with the contact part 151, and then the electrode contact 121 of the driving circuit board 12 can be triggered to transmit the touch signal related to the key cap 14 to the preset host system.

The above is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, all simple modifications and equivalent structural changes made by using the contents of the present invention's specification and drawings should be included in the patent scope of the present invention and should be stated.

In summary, the luminous module of the luminous keyboard of this invention can achieve its effect and purpose when it is actually implemented and used. Therefore, this invention is a research and development creation with excellent practicality. In order to meet the application requirements of invention patents, an application is filed in accordance with the law. I hope that the review committee will approve this case as soon as possible to protect the inventor's hard work. If the review committee of the Jun Bureau has any doubts, please feel free to write to instruct. The inventor will do his best to cooperate and feel very grateful.

1: Button unit

11: Base plate

110:Through hole

12: Drive circuit board

121: Electrode contact

13:Connection mechanism

14: Keycaps

15: Elastic body

2: Light-emitting module

22: Micro LEDs

Claims (7)

A light-emitting module for a light-emitting keyboard includes a key unit and a light-emitting module. The key unit includes a base plate, a driving circuit board and a connecting mechanism arranged on the base plate, a key cap assembled on the connecting mechanism, and an elastic body arranged between the driving circuit board and the key cap, so that the key cap drives the connecting mechanism to move downward in the longitudinal direction and squeeze the elastic body, and the elastic body drives the key cap and the connecting mechanism to move upward in the longitudinal direction. The light module disposed between the key cap and the driving circuit board includes a thin film circuit layer, at least one micro-light emitting diode disposed on the thin film circuit layer, a light guide layer stacked on the thin film circuit layer and the at least one micro-light emitting diode, and a light shielding dimming layer stacked on the light guide layer. The improvement is that the light shielding dimming layer is provided with a predetermined shape to shield the at least one micro-light emitting diode. A light shielding area is formed, and at least one light-transmitting portion is provided at the light shielding area, which is located at the outer periphery of the elastic body and is located in the range of the key cap, and the light shielding and dimming layer includes a first film, a second film stacked on the first film, and a thin film stacked on the second film. The light source projected outward by the at least one micro-light-emitting diode is guided by the light-guiding layer and evenly distributed to each of the light shielding areas of the light shielding and dimming layer. Each of the light-shielding areas is provided with a shielding surface with gaps between the shapes, for the light source of each micro-LED to be reflected to the light-guiding layer, thereby increasing the light intensity in the light-guiding layer. The light source is adjusted and softened through the light-guiding layer, and then the soft light is projected outward through the at least one light-transmitting portion of the light-shielding area to the bottom of each key cap, so as to increase the brightness of the light display around each key cap to be soft and non-glaring. The light-emitting module of the light-emitting keyboard as described in claim 1, wherein the surface of the light-shielding dimming layer is a light-shielding area formed into a predetermined shape by printing, gradual plating or electroplating. The light-emitting module of the light-emitting keyboard as described in claim 1, wherein the surface of the light-shielding dimming layer is a light-shielding area of a predetermined shape formed into multiple circular shapes, multiple elliptical shapes, multiple ring shapes, multiple frame shapes, multiple rectangular shapes, multiple diamond shapes, grid shapes, cloud shapes, mesh shapes or irregular shapes. A light-emitting module for a light-emitting keyboard includes a key unit and a light-emitting module. The key unit includes a base plate, a driving circuit board and a connecting mechanism arranged on the base plate, a key cap assembled on the connecting mechanism, and an elastic body arranged between the driving circuit board and the key cap, so that the key cap drives the connecting mechanism to move downward in the longitudinal direction and squeeze the elastic body, and the elastic body drives the key cap and the connecting mechanism to move upward in the longitudinal direction. The light module disposed between the key cap and the driving circuit board includes a thin film circuit layer, at least one micro-light emitting diode disposed on the thin film circuit layer, a light guide layer stacked on the thin film circuit layer and the at least one micro-light emitting diode, and a light shielding dimming layer stacked on the light guide layer. The improvement is that the light shielding dimming layer is provided with a predetermined shape to shield the at least one micro-light emitting diode. A light shielding area is formed, and at least one light-transmitting portion is provided at the light shielding area, which is located at the outer periphery of the elastic body and is located in the range of the key cap, and the light shielding and dimming layer includes a thin film sheet, a second film sheet stacked on the thin film sheet, and a first film sheet stacked on the second film sheet. Then, the light source projected outward by the at least one micro-light-emitting diode is guided by the light-guiding layer and evenly distributed to each of the light shielding areas of the light shielding and dimming layer. Each of the light-shielding areas is provided with a shielding surface with gaps between the shapes, for the light source of each micro-LED to be reflected to the light-guiding layer, thereby increasing the light intensity in the light-guiding layer. The light source is adjusted and softened through the light-guiding layer, and then the soft light is projected outward through the at least one light-transmitting portion of the light-shielding area to the bottom of each key cap, so as to increase the brightness of the light display around each key cap to be soft and non-glaring. A light-emitting module for a light-emitting keyboard includes a key unit and a light-emitting module. The key unit includes a base plate, a driving circuit board and a connecting mechanism arranged on the base plate, a key cap assembled on the connecting mechanism, and an elastic body arranged between the driving circuit board and the key cap, so that the key cap drives the connecting mechanism to move downward in the longitudinal direction and squeeze the elastic body, and the elastic body drives the key cap and the connecting mechanism to move upward in the longitudinal direction. The light module disposed between the key cap and the driving circuit board includes a thin film circuit layer, at least one micro-light emitting diode disposed on the thin film circuit layer, a light guide layer stacked on the thin film circuit layer and the at least one micro-light emitting diode, and a light shielding dimming layer stacked on the light guide layer. The improvement is that the light shielding dimming layer is provided with a predetermined shape to shield the at least one micro-light emitting diode. A light shielding area is formed, and at least one light-transmitting portion is provided at the light shielding area, which is located at the outer periphery of the elastic body and is located in the range of the key cap, and the light shielding and dimming layer includes a second film, a thin film stacked on the second film, and a first film stacked on the thin film. Then, the light source projected outward by the at least one micro-light-emitting diode is guided by the light-guiding layer and evenly distributed to each of the light shielding areas of the light shielding and dimming layer. Each of the shading areas is provided with a shielding surface with gaps between the shapes, for the light source of each micro-LED to be reflected to the light-guiding layer, thereby increasing the light intensity in the light-guiding layer. The light source is adjusted and softened through the light-guiding layer, and then the soft light is projected outward through the at least one light-transmitting portion of the shading area to the bottom of each key cap, so as to increase the brightness of the light display around each key cap to be soft and non-glaring. The luminous module of the luminous keyboard as described in claim 1, 4 or 5, wherein the first film is a white film formed by printing, gradual plating or electroplating; the second film is a dark (such as black, dark blue or dark green) film formed by printing, gradual plating or electroplating; and the film is a mylar film or a translucent silicone film, a plastic film or a rubber film. The light-emitting module of the light-emitting keyboard as described in claim 1, 4 or 5, wherein the thin film circuit layer includes a conductive circuit board with a conductive circuit, a bottom film and a top film respectively arranged on two opposite surfaces of the conductive circuit board, and at least one or more luminescent inks for increasing the luminous brightness are printed on the top film, and at least two metal contacts for electrical connection of the at least one micro-light-emitting diode are arranged on the surface of the conductive circuit board adjacent to the top film, and a light-scattering homogenizer covering the at least one micro-light-emitting diode and the at least two metal contacts is arranged on the surface of the conductive circuit board, and the light-scattering homogenizer is a light-transmitting waterproof glue or a light-transmitting silicone.

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