TW202410096A - 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 film switch and the elastic body. , 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, especially 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 current rapid development of electronic technology and information industry, various electronic products are developing towards the trend of being light, thin, short, small and powerful, such as computers, notebook computers, mobile Internet devices (MID), smart phones, Tablet computers, etc., have become indispensable electronic products for modern people in daily life or work. Most users use input devices such as mice and keyboards to communicate with electronic products. Among them, keyboards are the most convenient. Input operations of text, numbers or instructions, and improve practical functions.

In order to enable the human eye to clearly see the symbols on each key in a low-light environment, some manufacturers have introduced light guide plate and light source technology into the keyboard, and developed backlight keyboards with backlight modules. The light generated can be projected onto the back of each keycap to form a backlight effect, allowing users to clearly see the character symbols on the keycaps for easy operation. Currently, backlit keyboards on the market include key modules and Backlight module, wherein the backlight module has 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 to make the light guide plate emit light uniformly. In addition, the lower surface of the light guide plate is provided with a The emitted light is reflected back to the reflective sheet on the light guide plate, and a light shield corresponding to the button module is provided on the upper surface of the light guide plate, so that the emitted light guided by the light guide plate can pass through the light-transmitting part of the light shield. Then it is 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 or unstable brightness, which is the direction that the relevant manufacturers in this industry are eager to study and improve.

Therefore, in view of the above-mentioned problems and deficiencies, the inventor collected relevant information, evaluated and considered many aspects, and used his many years of experience in this industry to develop and modify the luminous model of this luminous keyboard. The group's invention patent was born.

The main purpose of the present invention is that the light-emitting module of the light-emitting keyboard is provided with a driving circuit board and a connecting mechanism on the bottom plate of the key unit, and a keycap is assembled on the connecting mechanism, and an elastic body is provided between the driving circuit board and the keycap. , for the keycap drive connection mechanism to reduce the extrusion elasticity body, and then the elastomer drives the keycap and the connecting mechanism to rise and reset, and a light-emitting module is set between the membrane switch and the elastomer. At least one micro-light-emitting diode is set on the thin film circuit layer, and the light guide layer is stacked and a light-shielding and light-adjusting layer. The light-shielding and light-adjusting layer is provided with a light-shielding area of a predetermined shape to cover at least one micro-LED The scope can achieve the purpose of providing stable and soft bright light projection at the bottom or periphery of the keycap, and can also produce soft bright light at the bottom or periphery of the keycap, and at least one micro-light emitting diode can form at least one color bright light display or multiple color changes, etc. The advantage is that the backlight module using micro light-emitting diodes is 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: Bottom plate

110:Through hole

12: Drive circuit board

121: Electrode contact

13:Connection mechanism

14:Keycap

15: Elastomer

151: Touch Department

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 light emitting diodes

23:Light guide layer

24: Shading and dimming layer

241: Shade area

2411:Reflective surface

2412:shading 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 modulating 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 modulating 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 objects and effects, the technical means, structures, implementation methods, etc. used in the present invention are described in detail below for a complete understanding of the preferred embodiments of the present invention.

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 above-mentioned key unit 1 of the present invention can be provided with a light-emitting module 2 between the keycap 14 and the driving circuit board 12, which can provide at least one micro light-emitting diode 22 and at least one light-transmitting portion 242 of the light-shielding and light-adjusting layer 24. The key cap 14 of the key unit 1 can be pressed to drive the elastic body 15 to contact the light emitting module 2 with the touching portion 151 and then contact the electrode contact 121 of the driving circuit board 12 to The touch signal related to the keycap 14 is externally transmitted to the default host system, and at least one micro-light-emitting diode 22 of the light-emitting module 2 is activated through the drive circuit board 12. When light is projected outward, the light source projected outward by at least one micro-light emitting diode 22 is guided through the light guide layer 23 and evenly distributed to the bottom of the light-shielding and dimming layer 24, and passes through at least one light-transmitting element of the light-shielding and dimming layer 24. The portion 242 projects uniform, bright and soft light outward to the bottom of the keycap 14 or the periphery of the keycap 14, so as to achieve the purpose of providing a stable light source at the bottom or periphery of the keycap 14 to project bright and soft light, so that the bottom of the keycap 14 Or the surrounding area generates soft bright light, and at least one micro light-emitting diode 22 can project at least one color bright light display or multiple color changes. Furthermore, the light-emitting module 2 using at least one micro light-emitting diode 22 has the advantages of light size, Thin effect.

Furthermore, the above-mentioned light-shielding and modulating layer 24 may include a first diaphragm 243, a second diaphragm 244 stacked on the first diaphragm 243, and a thin film 245 stacked on the second diaphragm 244; The light-modulating 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 and light-modulating layer 24 may also include a third film sheet 244 stacked on the film sheet 245. The two diaphragms 244, the diaphragm 245 stacked on the second diaphragm 244, and the first diaphragm 243 stacked on the diaphragm 245, etc., are stacked and arranged in various ways; and the above-mentioned first diaphragm 243 can be printed The white diaphragm can be formed by printing, gradual plating or electroplating, which can reflect the light in the light guide layer 23 and increase the brightness; the above-mentioned second diaphragm 244 can be formed by printing, gradual plating or electroplating to form a dark color ( Such as: black, dark blue or dark green, etc.) diaphragm, that is, printing, gradual plating or electroplating can be used on the surface of the second diaphragm 244, and then a plurality of light-shielding areas 241 of predetermined shapes are formed on the light-shielding portion 242. The plurality of light-shielding areas 241 are respectively located under the keycap 14, and are formed into annular shapes (can be circular, rectangular, polygonal, etc.) at each light-shielding area 241 through printing, gradual plating or electroplating. The reflective surface 2411 is formed with a shielding surface 2412 inside each annular reflective surface 2411 by printing, gradual plating or electroplating, etc., and each shielding surface 2412 can be formed into a plurality of circular shapes, a plurality of ellipses, and a plurality of ring shapes. , plural box shapes, plural rectangular shapes, complex The plurality of micro light-emitting diodes of the light-emitting module 2 are activated by driving the circuit board 12 in predetermined shapes such as rhombus shape, grid shape, cloud shape, mesh shape or irregular shape (please also refer to Figure 10). 22 emits light and projects the light source outward, then the light source projected outward by at least one micro light-emitting diode 22 is guided through the light guide layer 23 and evenly distributed to each light-shielding area 241 of the light-shielding and modulating layer 24, then each light-shielding area 241 Due to the gaps formed between various shapes of the shielding surface 2412, the light source of each micro-light emitting diode 22 can also be reflected to the light guide layer 23, thereby increasing the light intensity in the light guide layer 23, and the light source passes through the light guide layer 23 is adjusted and softened, and then soft light is projected outward through at least one light-transmitting portion 242 of the light-shielding area 241 to the bottom of each keycap 14 to increase the brightness of the bright light display around each keycap 14, and the brightness is soft and non-glaring. ; And the above-mentioned film 245 can be a Mylar film, a translucent silicone film, a plastic film or a rubber diaphragm, 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 lines, 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 luminescence, and at least two metal contacts 214 are disposed on the surface of the conductive circuit board 211 adjacent to the top film 213 for electrical connection to at least one micro-light-emitting diode 22, and a light-scattering homogenizing body 215 is disposed on the surface of the conductive circuit board 211 for covering at least one micro-light-emitting diode 22 and the two metal contacts 216. The outside of the contact 214 can be used to form waterproof and anti-oxidation effects, and the light-scattering homogenizer 215 can be made of translucent waterproof glue or translucent silicone, etc., which can diffuse and project the light projected by at least one micro-LED 22 upward and in the horizontal direction around it in the direction of about 360°, and can evenly soften the light 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-LED 22, its height is less than 150 microns (micron), its length is less than 400 microns (micron), and its width is less than 250 microns (micron).

The above-mentioned 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 adopted) 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 touch 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.

To sum up, the light-emitting module of the above-mentioned light-emitting keyboard of the present invention can indeed achieve its effect and purpose when actually implemented and used. Therefore, the present invention is a research and development creation with excellent practicality and meets the application requirements for an invention patent. , I have filed an application in accordance with the law and 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 a letter for instructions. The inventor will try his best to cooperate. I feel that it will be convenient.

1:Button unit

11: Base plate

110:Through hole

12:Driver circuit board

121: Electrode contact

13:Connection mechanism

14:Keycap

15: Elastomer

2:Light-emitting module

22:Micro light emitting diodes

Claims (8)

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 utilizes the elastic body to move downward in the longitudinal direction. The key cap is driven, and the connecting mechanism is vertically raised and reset. The light-emitting module disposed between the film switch and the elastic body includes a film circuit layer, at least one micro-light-emitting diode disposed on the film circuit layer, a light-guiding layer stacked on the film circuit layer and the at least one micro-light-emitting diode, and a light-shielding dimming layer stacked on the light-guiding layer. The improvement is: The light-shielding and dimming layer is provided with a light-shielding area of a predetermined shape for shielding the at least one micro-LED, and the light-shielding area is provided with at least one light-transmitting portion located at the outer periphery of the elastic body and corresponding to the range of the key cap. The light-emitting module of the light-emitting keyboard according to claim 1, wherein the surface of the light-shielding and light-modulating layer is the 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. The light-emitting module of the light-emitting keyboard according to claim 1, wherein the light-shielding and light-modulating layer includes a first diaphragm, a second diaphragm stacked on the first diaphragm, and a film stacked on the second diaphragm. piece. The light-emitting module of the light-emitting keyboard according to claim 1, wherein the light-shielding and light-modulating layer includes a film sheet, a second film sheet stacked on the film sheet, and a first film sheet stacked on the second film sheet. The light-emitting module of the light-emitting keyboard as described in claim 1, wherein the light-shielding dimming layer includes a second film, a film stacked on the second film, and a first film stacked on the film. The luminous module of the luminous keyboard as described in claim 4, 5 or 6, 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, 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 is arranged on the surface of the conductive circuit board to cover the at least one micro-light-emitting diode and the at least two metal contacts, and the light-scattering homogenizer is a light-transmitting waterproof glue or a light-transmitting silicone.

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