CN116895486A - Luminous keyboard, backlight module and luminous lamp panel - Google Patents

Abstract

The invention provides a luminous keyboard, a backlight module and a luminous lamp panel. The luminous keyboard comprises a backlight module and at least one key. The backlight module comprises two light emitting units, a light guide plate, a lamp panel and a microstructure layer. The light guide plate is provided with two light guide plate holes for respectively accommodating the two light-emitting units, and also comprises at least one slot, wherein the at least one slot is positioned between the two light-emitting units. The lamp panel is arranged in parallel with the light guide plate, and is provided with at least one pair of non-intersecting main wires which are electrically connected with the two light-emitting units. The microstructure layer is arranged in parallel with the light guide plate, and comprises at least one microstructure area. The at least one microstructure area is located between the two light emitting units, and the at least one slot of the light guide plate is at least partially located in the at least one microstructure area. The invention can improve the consistency of the whole luminescence and increase the light mixing effect of the LED multicolor crystal grains of the luminous unit.

Description

Luminous keyboard, backlight module and luminous light panel

Technical field

The present invention relates to a luminous keyboard, a backlight module and a luminous lamp panel, and in particular to a luminous keyboard, a backlight module and a luminous lamp panel that improves the overall and single-key light mixing effects and enhances the overall and single-key color luminous visual effects.

Background technique

With the development of technology, keyboard designs are becoming more and more diverse. When users choose a keyboard, in addition to the basic input functions, the visual effects of the keyboard are also valued by users. Illuminated keyboards are currently on the market. In addition to being visually attractive to users, they can also be used at night or in places with insufficient lighting. The existing light-emitting keyboard uses low-brightness LEDs to illuminate each square key. Therefore, the following problems will occur: 1) the main symbols above the LEDs are too bright, and the corner symbols of the keycaps are too dark; 2) the keycaps The surrounding light brightness is inconsistent; 3) The overall illumination of a single button and multiple buttons is inconsistent.

Contents of the invention

The present invention provides a luminous keyboard, a backlight module and a luminous lamp panel that improve the overall and single-key light mixing effects and enhance the overall and single-key color luminous visual effects to solve the above technical problems.

In order to achieve the above object, the present invention proposes a backlight module for illuminating at least one keycap. The backlight module includes two light-emitting units, a light guide plate, a light panel and a microstructure layer. The light guide plate has two light guide plates. holes to respectively accommodate the two light-emitting units, the light guide plate also includes at least one slot, the at least one slot is located between the two light-emitting units; the lamp panel is arranged parallel to the light guide plate, the lamp panel has at least A pair of non-intersecting main wires, the at least one pair of non-intersecting main wires are electrically connected to the two light-emitting units; the microstructure layer is arranged parallel to the light guide plate, the microstructure layer includes at least one microstructure area; wherein, the at least A microstructure area is located between the two light-emitting units, and the at least one slot of the light guide plate is at least partially located in the at least one microstructure area.

As an optional technical solution, the light guide plate has two slots, the two slots respectively correspond to the two light-emitting units, and at least a part of the at least one microstructure area is located between the two slots.

As an optional technical solution, the at least one pair of non-intersecting main wires pass through the at least one slot.

As an optional technical solution, the at least one microstructure area does not overlap with the at least one pair of non-intersecting main wires.

As an optional technical solution, the at least one microstructure area at least partially surrounds the at least one slot.

As an optional technical solution, the at least one microstructure area at least partially overlaps the at least one slot.

As an optional technical solution, the backlight module includes a light shielding plate, the light shielding plate includes an internal reflective part, and the internal reflective part covers the two light-emitting units.

As an optional technical solution, the backlight module includes a light shielding plate, the light shielding plate includes a reflective layer hole that can emit light, and at least a portion of the at least one microstructure area is located between the reflective layer hole and the at least one slot.

As an optional technical solution, the backlight module includes a light shielding plate, the light shielding plate includes two adjacent reflective layer holes that can emit light, and the at least one slot is located between the two adjacent reflective layer holes.

As an optional technical solution, the backlight module includes a light shielding plate, and the at least one microstructure area is located on the surface of at least one of the light shielding plate, the light guide plate and the light panel.

As an optional technical solution, the backlight module includes a light shielding plate, the light shielding plate includes two adjacent reflective layer holes that can emit light, and the at least one pair of non-intersecting main wires pass through the two reflective layer holes.

As an optional technical solution, the lamp panel further includes a first reflective layer, and the at least one microstructure area is located on the surface of the first reflective layer.

As an optional technical solution, the lamp panel further includes a first reflective layer covering the at least one pair of non-intersecting main wires.

As an optional technical solution, the two light-emitting units each contain three crystal grains to provide three-color light, and the three crystal grains are arranged consecutively from short side to short side.

As an optional technical solution, the backlight module has a plate hole, and the at least one slot is connected to the plate hole.

As an optional technical solution, the at least one microstructure area is located between the at least one pair of non-intersecting main wires.

As an optional technical solution, the at least one slot is located between the at least one pair of non-intersecting main wires.

In addition, the present invention also proposes a backlight module for illuminating at least one keycap. The backlight module includes a light-emitting unit, a light guide plate, a light panel and a microstructure layer. The light guide plate has a light guide plate hole to accommodate the light-emitting unit, the light guide plate also includes a groove pattern, the groove pattern is arranged around the light-emitting unit, the groove pattern includes a plurality of slits; the light panel has at least one pair of non-intersecting wires , the at least one pair of non-intersecting wires are electrically connected to the light-emitting unit; the microstructure layer is arranged parallel to the light guide plate, and the microstructure layer includes at least one microstructure area; wherein the groove pattern overlaps with the at least one microstructure area.

In addition, the present invention also proposes a backlight module for illuminating at least one keycap. The backlight module includes a light-emitting unit, a light guide plate, a lamp panel, a microstructure layer and a light-shielding layer. The light guide plate has a light guide plate hole to accommodate The light-emitting unit is placed, and the light guide plate also has an edge, and the edge is away from the light-emitting unit; the light panel has at least one pair of non-intersecting wires, and the at least one pair of non-intersecting wires are electrically connected to the light-emitting unit; the microstructure layer is parallel to the light-emitting unit. The light guide plate is provided, the microstructure layer includes a microstructure area; the light shielding plate includes a reflective layer hole that can emit light; wherein at least a part of the microstructure area is located between the reflective layer hole and the edge of the light guide plate.

As an optional technical solution, the light guide plate has a slot and an edge, the slot is located outside the hole of the reflective layer, and the microstructure area is formed between the edge of the light guide plate and the slot.

In addition, the present invention also provides a luminous keyboard, which includes a plurality of keys and the backlight module as claimed in any one of claims 1 to 20. The plurality of keys have keycaps; the backlight module is located below the plurality of keys.

In addition, the present invention also proposes a light-emitting lamp panel, which includes a light guide plate, at least a pair of non-intersecting wires, a microstructure layer and a light-emitting unit. The light guide plate includes light guide plate holes and at least two slots; the at least one pair of non-intersecting wires are arranged parallel to the light guide plate; the microstructure layer is arranged parallel to the light guide plate, and the microstructure layer includes at least two microstructure areas, the At least two microstructure areas are spaced apart from each other; the light-emitting unit is located in the light guide plate hole, and the light-emitting unit is located between the at least two microstructure areas; wherein the at least two slots are arranged oppositely around the light-emitting unit, And the at least two microstructure areas are located between the at least two slots.

In addition, the present invention also proposes a light-emitting lamp panel, which includes three light-emitting units, a light guide plate and at least one microstructure layer. The light guide plate includes at least three light guide plate holes to accommodate the three light-emitting units respectively. The light guide plate also includes at least three slots, and the at least three slots are located between the three light-emitting units; the at least one micron Structural layer, arranged parallel to the light guide plate, the at least one microstructure layer includes at least one microstructure area, the at least one microstructure area is located between the three light-emitting units; wherein the at least one microstructure area surrounds the at least three between the light guide plate holes and the at least three slots.

In addition, the present invention also proposes a light-emitting lamp panel, which includes three light-emitting units, a light guide plate and at least one microstructure layer. The light guide plate includes at least three light guide plate holes to respectively accommodate the three light-emitting units. The light guide plate also includes at least three slots. The at least three slots are located between the three light-emitting units. The light guide plate also including plate holes, the plate holes are located between the at least three slots; the at least one microstructure layer is arranged parallel to the light guide plate, the at least one microstructure layer includes at least one microstructure area, the at least one microstructure area is located between the three light-emitting units; wherein the at least one microstructure area is surrounded between the plate hole and the at least three slots.

The present invention provides a light-emitting keyboard, a backlight module and a light-emitting lamp panel. A protruding structure is formed between two non-intersecting wires or multiple microstructure areas, and the position of the protruding structure corresponds to the position of the light-emitting unit. Thereby, The amount of light emitted by the light-emitting unit enters the light guide plate is increased, and the specially configured microstructure area on the light-emitting lamp board is used to recycle light or assist in light extraction, thereby improving the consistency of the overall light emission.

In addition, the present invention simultaneously solves the problems of colored light intrusion and contamination of adjacent keycaps, uneven light mixing, and application of slots. It optimizes the configuration of the microstructure area and slots, and at the same time makes full use of limited light to achieve single-key optimization. The chroma and color saturation, combined with the arrangement of the multi-color crystal grains of the light-emitting unit, further increase the light mixing effect of the three-color LED grains of the light-emitting unit.

The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Description of the drawings

Figure 1 is a schematic diagram of a luminous keyboard according to an embodiment of the present invention;

Figure 2 is a partial top view of the luminous keyboard in Figure 1;

Figure 3 is a partial exploded view of the luminous keyboard in Figure 1;

Figure 4 is a partial cross-sectional view of the luminous keyboard in Figure 1;

Figure 5 is a partial top view of a luminous keyboard according to another embodiment of the present invention;

Figure 6 is a partial cross-sectional view of the luminous keyboard in Figure 5;

Figure 7 is a partial cross-sectional view of a light-emitting keyboard according to another embodiment of the present invention;

Figure 8 is a partial cross-sectional view of a light-emitting keyboard according to another embodiment of the present invention;

Figure 9 is a partial cross-sectional view of a light-emitting keyboard according to another embodiment of the present invention;

Figure 10 is another partial top view of the luminous keyboard in Figure 1;

Figure 11 is another partial top view of the luminous keyboard in Figure 1;

12A is a partial top view of the groove pattern of the light guide plate of the backlight module according to another embodiment of the present invention;

12B is a partial top view of another groove pattern of the light guide plate of the backlight module according to another embodiment of the present invention;

Figure 13 is an exploded schematic diagram of a partial top view of the light shielding plate of the present invention applicable to the embodiment of Figures 12A and 12B;

Figure 14 is a partial cross-sectional view of a light-emitting keyboard according to another embodiment of the present invention;

Figure 15 is a partial top view of the light guide plate and the lamp panel of the backlight module of the embodiment of Figure 14;

Figure 16 is a partial cross-sectional view of a light-emitting keyboard according to yet another embodiment of the present invention;

Figure 17 is a partial top view exploded view of the light shielding plate of the present invention applicable to the embodiment of Figure 16;

Figure 18 is a partial top view exploded view of a lamp panel according to yet another embodiment of the present invention.

Implementation

In order to illustrate the present invention more clearly, the present invention will be further described below with reference to preferred embodiments and drawings. Similar parts are designated with the same reference numerals in the drawings. Those skilled in the art should understand that the content described below is illustrative rather than restrictive, and should not be used to limit the scope of the present invention.

The backlight module uses low-power light-emitting units, such as Mini LED or Micro LED, which can reduce power consumption, reduce the total heat generated by the backlight module, and reduce the overall thickness of the backlight module, which helps to further make the overall light-emitting keyboard thinner. However, the highly restricted luminous range of Mini LED or Micro LED brings great challenges to the luminous uniformity of single keys and the entire keyboard. Embodiments of the present invention focus on how to achieve a large proportion of the light from the light-emitting unit entering the light guide plate for lateral transmission, and how to effectively recover the light that passes through the light guide plate during the lateral transmission into the light guide plate for reuse.

Please refer to FIG. 1 , which is a schematic diagram of a light-emitting keyboard LKB according to an embodiment of the present invention. As shown in Figure 1, the luminous keyboard LKB includes a backlight module BLM and multiple keys KS. The backlight module BLM is provided with a base plate SUP, and a plurality of buttons KS are arranged on the base plate SUP. Generally speaking, the plurality of keys KS may include square keys and multiple keys (for example, space keys). It should be noted that the number, size and arrangement of the keys KS can be determined according to the actual application and are not limited to the embodiment illustrated in the figure.

The backlight module BLM includes the light panel LCB, the light guide panel LGP, and the light shielding panel SS. The light guide plate LGP is arranged on the light-emitting lamp panel LCB, and the light shielding plate SS is arranged on the light guide plate LGP. Each key KS on the light-emitting keyboard LKB corresponds to at least one light-emitting unit (for example, a light-emitting diode) on the light-emitting light board LCB of the backlight module BLM.

Please refer to Figures 2 to 4. Figure 2 is a partial top view of the luminous keyboard LKB in Figure 1. Figure 3 is a partial exploded view of the luminous keyboard LKB in Figure 1. Figure 4 is a partial cross-section of the luminous keyboard LKB in Figure 1. picture.

As shown in FIGS. 2 to 4 , the light-emitting lamp panel LCB includes two non-intersecting wires LT and HT, two other non-intersecting wires STa and STb, a light-emitting unit LED, a first reflective layer RL1 and a plurality of microstructure areas MS. The light-emitting light board LCB can be a lighting circuit board. The light-emitting unit LED is connected between the two non-intersecting wires STa and STb, and the light-emitting unit LED is connected between the two non-intersecting wires LT and HT via the two non-intersecting wires STa and STb. In this embodiment, the two non-intersecting wires LT and HT are the main driving circuits of the light-emitting unit LED, and the two non-intersecting wires STa and STb are the sub-driving circuits of the light-emitting unit LED, where the wire LT can be a low-potential wire, And the wire HT can be a high potential wire. The light-emitting unit LED can be a white light-emitting diode or a combination of red, green, and blue light-emitting diodes, which can be determined according to the actual application. Generally speaking, the two non-intersecting wires LT and HT will be the main wires with larger cross-sectional areas and can span multiple buttons KS. The two non-intersecting wires LT and HT will not intersect at least within the scope of a single button KS, or they can They do not intersect among multiple adjacent keys KS and within a larger continuous area covering their key gaps. A pair of non-intersecting wires STa and STb arranged within the range of each single button KS are sub-wires with a small cross-sectional area. Although they may be located on the same straight line, the ends of the two non-intersecting wires STa and STb are respectively connected to the light-emitting unit LED. two electrodes, so the two non-intersecting wires STa and STb do not overlap.

The first reflective layer RL1 is disposed on the two non-intersecting wires LT and HT and the other two non-intersecting wires STa and STb. A plurality of microstructure regions MS are formed on the first reflective layer RL1. In this embodiment, the microstructure region MS may be a concave-convex structure formed on the first reflective layer RL1. For example, the light-emitting light board LCB can be composed of a flexible circuit board, and copper mesh (coppermesh) is commonly used to enhance the support strength of the circuit board. The first reflective layer RL1 can be formed by spraying reflective paint or covering the reflective film on the surface of the flexible circuit board (including the surface of the copper mesh). The grid structure of the copper mesh will cause the first reflective layer RL1 to form regular concave points (grid points) and convex areas (grid lines). These concave points and convex areas have reflective functions and can reflect light back to the light guide plate. LGP; In practical applications, the copper wire area (two non-intersecting wires LT and HT and the other two non-intersecting wires STa and STb) can also become a protruding linear reflection area. In principle, the copper mesh does not overlap with the two non-intersecting conductors LT and HT on the flexible circuit board, nor does it electrically connect the two non-intersecting conductors STa and STb. However, in practical applications, the copper mesh has a radio frequency interference shielding effect. Therefore, the copper network may be connected to the ground of the driving circuit. However, in practical applications, not any reflective layer covering the copper mesh and lines can produce a concave and convex reflective structure. If the first reflective layer RL1 is an independent thin film element, the thickness of the first reflective layer RL1 must be thin enough, for example, lower than the thickness of the copper foil substrate (including adjacent tiled copper mesh and copper wire areas), and the first reflective layer RL1 A high degree of plasticity is required to form concave and convex microstructures in the copper mesh and copper wire areas when covering the copper foil substrate. If the first reflective layer RL1 is formed by ink coating, for example, the coating thickness, ink consistency, coating area control, etc. must be strictly controlled, otherwise the hollows of the original copper foil base material will easily be filled with ink flow, reducing the reflective microstructure. Depth and reflective diffusion effects.

In addition, even if the circuits of the light-emitting lamp board LCB are not made of copper foil, there are neither thick copper circuits nor a copper mesh to enhance the structural strength of the light-emitting lamp board LCB, the first reflective layer RL1 can still be formed with a diffusion effect. microstructure. For example, micro-dot ink is printed on the first reflective layer RL1 to form concave/convex areas as the microstructure area MS; or, an ink with larger-sized reflective particles is selected, and the concave areas are formed simultaneously when spraying or printing the first reflective layer RL1 / The convex area is used as the microstructure area MS; or, if the first reflective layer RL1 is a layer of reflective film, the surface of the selected reflective film can be used as a microstructure as long as it has reflective particles with medium to low flatness and an uneven reflective surface. Structural area MS.

In this embodiment, within the scope of a single button KS, the multiple microstructure areas MS include two internal microstructure areas IMS and two external microstructure areas OMS, where the two internal microstructure areas IMS are located on two non-intersecting wires. between LT and HT, and the two external microstructure areas OMS are located outside the two non-intersecting wires LT and HT. The patterns of the two inner microstructure areas IMS may be different from the patterns of the two outer microstructure areas OMS, but are not limited thereto. The light-emitting unit LED is located between multiple microstructure areas MS, that is to say, the light-emitting unit LED is located between two inner microstructure areas IMS and also between two outer microstructure areas OMS.

In this embodiment, the two non-intersecting wires STa and STb divide the two internal microstructure areas IMS, so the two non-intersecting wires STa and STb are also located between the two internal microstructure areas IMS; similarly, the two non-intersecting wires STa and STb are also located between the two internal microstructure areas IMS. The non-intersecting wires LT and HT respectively divide an external microstructure area OMS and two internal microstructure areas IMS. Therefore, it can also be said that the two non-intersecting wires LT and HT are respectively located in an external microstructure area OMS and two internal microstructures. between regional IMS. In some embodiments, the aforementioned multiple microstructure areas MS, whether the outer microstructure area OMS or the inner microstructure area IMS, do not overlap with the two non-intersecting wires LT and HT, nor overlap with the two non-intersecting wires STa. , STb overlap; for example, this is the case when the lines of the light-emitting light panel LCB are matched with copper wires and copper mesh. If the microstructure area MS on the first reflective layer RL1 is only surface-treated rather than formed from the underlying copper mesh or other substrates, multiple microstructure areas MS/OMS/IMS may overlap with the two non-intersecting wires LT and HT. , or overlap with two non-intersecting wires STa and STb. The light guide plate LGP has a light guide plate hole L0, and the light emitting unit LED is located in the light guide plate hole L0. The top surface of the light guide plate LGP close to the light guide plate hole L0 may have adhesive surrounding the light guide plate hole L0 to adhere the light shielding plate SS, and/or the bottom surface of the light guide plate LGP close to the light guide plate hole L0 may have adhesive surrounding the light guide plate hole L0 Glue to adhere the light-emitting lamp board LCB. In addition, the light guide plate LGP also has multiple microstructure areas LMS. The multiple microstructure areas LMS of the light guide plate LGP correspond to the positions of the inner hole Sc and the peripheral hole SUPH of the base plate SUP, so as to guide the light transmitted in the light guide plate LGP upward. sold out. Under the orthographic projection of the peripheral hole SUPH of the base plate SUP, the microstructure area LMS of the light guide plate LGP can at least partially overlap with the multiple microstructure areas MS of the first reflective layer RL1 of the light emitting lamp panel LCB, which can especially increase the penetration of the inner surface. The light emission effect of the hole Sc and the peripheral hole SUPH improves the brightness of the corner symbols (external light-transmitting area KC1) of the keycap KCC. The internal microstructure area IMS on the first reflective layer RL1 of the light-emitting lamp panel LCB close to the light-emitting unit LED can be used as a means of optical adjustment when the light emitted near the light-emitting unit LED is excessively weakened, such as the mask layer of the light-shielding sheet SS The area of the internal mask part ML0 of ML is too large, or the light transmittance of the internal reflective part RL0 of the second reflective layer RL2 is too low. At this time, the internal microstructure of the first reflective layer RL1 of the light-emitting lamp panel LCB close to the light-emitting unit LED The structural area IMS can improve the light emission effect of the internal light-transmitting area KC0 passing through the inner hole Sc or the keycap KCC.

A better way to optimize the MS/OMS/IMS configuration of the multiple microstructure areas mentioned above is to set the two non-intersecting wires STa and STb and the other two non-intersecting wires LT and HT as close as possible to any of the base plate SUP. The rib area or frame area (such as annular rib Sr0, bridge rib Sr1, support frame Sf) overlaps, so that the aforementioned multiple microstructure areas MS/OMS/IMS will be able to correspond to the microstructure area LMS of the light guide plate LGP, and can also correspond to the microstructure area LMS of the light guide plate LGP. The peripheral hole SUPH or the inner hole Sc of the base plate SUP can better correspond to the internal light-transmitting area KC0 and the external light-transmitting area KC1 of the keycap KCC. In addition, multiple microstructure areas MS/OMS/IMS may overlap with the annular rib Sr0, the bridge rib Sr1 or the support frame Sf of the base plate SUP. Although these locations cannot emit light, the microstructure area MS/OMS/IMS can assist in guiding the light. The light escaping from the light plate LGP is then guided into the light guide plate LGP for recycling, which contributes to the subsequent light emitting effect of another key KS further outside or even adjacent to it. Of course, the aforementioned microstructure area MS/OMS/IMS can also overlap with the second reflective layer RL2 of the light shielding plate SS, including overlapping with the internal reflective part RL0 and the outer frame part of the second reflective layer RL2, which will help light to be recycled to the guide. Light board LGP.

The light-shielding plate SS is disposed above the plurality of microstructure areas MS. The light shielding plate SS board includes a masking layer ML, a second reflective layer RL2 and a protective layer PL, where the masking layer ML, the second reflective layer RL2 and the protective layer PL can be stacked on each other in various ways. For example, any one of the mask layer ML, the second reflective layer RL2 and the protective layer PL can be stacked on the top, middle or bottom of the light shielding plate SS to form the light shielding plate SS. The mask layer ML is opaque. The second reflective layer RL2 may have both reflective and translucent properties. That is to say, the second reflective layer RL2 may reflect part of the light and allow part of the light to pass through. The mask layer ML can be made of black paint, and the second reflective layer RL2 can be made of white paint, but is not limited thereto. In this embodiment, the mask layer ML has a mask layer hole MLH and an internal mask portion ML0 located in the mask layer hole MLH, and the second reflective layer RL2 has a reflective layer hole RLH and a reflective layer hole RLH located in the reflective layer hole RLH. Internal reflective part RL0. The mask layer hole MLH can be greater than, equal to, or smaller than the reflective layer hole RLH, and the internal mask portion ML0 can be greater than, equal to, or smaller than the internal reflective portion RL0, depending on the required luminous effect. The internal mask part ML0 and the internal reflective part RL0 are both located above the light emitting unit LED. In this embodiment, the internal mask portion MLO and/or the internal reflection portion RLO above the light-emitting unit LED is at least partially projected between the two non-intersecting wires LT and HT or the two non-intersecting wires STa and STb.

Each button KS contains a part of the base plate SUP. In this embodiment, the bottom plate SUP has an inner hole Sc, an annular rib Sr0, a plurality of bridging ribs Sr1 and a support frame Sf, wherein the annular rib Sr0 surrounds the inner hole Sc, and a plurality of bridging ribs Sr1 connect the annular rib Sr0 and the support frame Sf. . In addition, there are a plurality of peripheral holes SUPH between the bridge rib Sr1, the annular rib Sr0 and the support frame Sf. In this embodiment, the two internal microstructure regions IMS at least partially overlap with the projections of the inner hole Sc, the annular rib Sr0, the plurality of bridging ribs Sr1 and/or the support frame Sf. Furthermore, the two outer microstructure areas OMS at least partially overlap with the projections of the annular rib Sr0, the plurality of bridging ribs Sr1 and/or the support frame Sf.

The key KS includes the key cap KCC, the support device SSR, the circuit board MEM and the base plate SUP. The keycap KCC is set relative to the base plate SUP. The keycap KCC has an inner light-transmitting area KC0 and a plurality of outer light-transmitting areas KC1. The inner light-transmitting area KC0 and the plurality of outer light-transmitting areas KC1 are surrounded by an opaque area KC2. The positions of the internal light-transmitting area KC0 and the external light-transmitting area KC1 respectively correspond to the positions of the inner hole Sc and the peripheral hole SUPH of the base plate SUP, so that the light emitted by the light-emitting unit LED can pass through the light guide plate LGP, the light shielding plate SS, and the inner hole of the base plate SUP. Sc and the peripheral hole SUPH are projected from the inner light-transmitting area KC0 and the plurality of outer light-transmitting areas KC1 of the keycap KCC. The support device SSR is provided between the keycap KCC and the base plate SUP. When the keycap KCC is pressed, the keycap KCC will move vertically toward the direction of the base plate SUP along with the support device SSR. In addition, a reset component (not shown in the figure), such as a rubber dome, is also provided between the keycap KCC and the base plate SUP, but is not limited to this. The circuit board MEM has a switch corresponding to the button KS, such as a membrane switch or other trigger switch.

From a top view, the light-emitting unit LED, the light guide plate hole L0, the internal reflection part RL0, the internal mask part ML0, the inner hole Sc, the internal light-transmitting area KC0 and the adhesive around the light guide hole L0 can be located on two non-intersecting wires Between LT, HT and/or two non-intersecting wires STa and STb. In other words, the light-emitting unit LED, the light guide plate hole L0, the internal reflective part RL0, the internal mask part ML0, the inner hole Sc, the internal light-transmitting area KC0 and the adhesive around the light guide plate hole L0 can be located in two internal microstructure areas between IMS.

As shown in Figure 4, the backlight module BLM also includes a protruding structure BP, where the position of the protruding structure BP corresponds to the position of the light-emitting unit LED, and the protruding structure BP is located between two non-intersecting wires LT and HT. In addition, the protruding structure BP is also located between multiple microstructure areas MS, that is to say, the protruding structure BP is located between two inner microstructure areas IMS and also between two outer microstructure areas OMS. In this embodiment, the protruding structure BP is formed on the light-emitting lamp panel LCB, and the protruding structure BP forms a groove IP to accommodate the light-emitting unit LED, so that the upper surface of the light-emitting unit LED is flush with the upper surface of the light guide plate LGP. Or the upper surface of the light-emitting unit LED is lower than the upper surface of the light guide plate LGP and higher than the lower surface of the light guide plate LGP. Since the light shielding plate SS is disposed on the light guide plate LGP, the upper surface of the light-emitting unit LED will also be flush with or lower than the lower surface of the light shielding plate SS, so that the light shielding plate SS can remain flat and will not It is pushed by the light-emitting unit LED and partially enters the inner hole Sc of the base plate SUP. In this way, the amount of light emitted by the light-emitting unit LED entering the light guide plate LGP can be increased, thereby improving the consistency of the overall light emission. Furthermore, the circuit board MEM may have a switch disposed corresponding to the inner hole Sc of the base plate SUP, so that the switch can partially enter the inner hole Sc of the base plate SUP without interfering with the SS light shielding plate and the light emitting unit LED below it.

Please refer to FIGS. 5 and 6 . FIG. 5 is a partial top view of the luminous keyboard LKB according to another embodiment of the present invention. FIG. 6 is a partial cross-sectional view of the luminous keyboard LKB in FIG. 5 . As shown in FIGS. 5 and 6 , the base plate SUP may not have the above-mentioned inner hole Sc. At this time, the light shield SS remains flat and will not be pushed by the light emitting unit LED. When the base plate SUP does not have the inner hole Sc, the keycap KCC may have no internal light-transmitting area KC0. However, if the keycap KCC has an internal light-transmitting area KC0, the peripheral holes SUPH around the central area of the keycap KCC can be used to emit light, so that the light is projected from the internal light-transmitting area KC0 without the inner hole Sc. In this embodiment, the two non-intersecting wires HT and LT may overlap with the projection of at least one of the at least one external light-transmitting area KC1. As long as the two non-intersecting wires HT and LT meet at least one of the following three conditions, the two non-intersecting wires HT and LT will not affect the light emission of the external light-transmitting area KC1 of the keycap KCC. Condition 1: The two non-intersecting wires HT and LT overlap with the projection of the annular rib Sr0, the bridging rib Sr1 and/or the support frame Sf of the base plate SUP. Condition 2: The two non-intersecting wires HT and LT overlap with the projection of the mask layer ML and/or the second reflective layer RL2 of the light shield SS. Condition 3: The two non-intersecting wires HT and LT overlap with the projection of the opaque area KC2 of the keycap KCC.

Please refer to FIG. 7 , which is a partial cross-sectional view of a light-emitting keyboard LKB according to another embodiment of the present invention. As shown in FIG. 7 , the protruding structure SP of the backlight module BLM can be formed on the light shielding plate SS, wherein the light-emitting unit LED is located below the protruding structure SP. The position of the protruding structure SP corresponds to the position of the light-emitting unit LED, and the protruding structure SP is located between the two non-intersecting wires LT and HT. In addition, the protruding structure SP is also located between multiple microstructure areas MS, that is to say, the protruding structure SP is located between two inner microstructure areas IMS and also between two outer microstructure areas OMS. In this embodiment, the protruding structure SP can be lower than or slightly enter the inner hole Sc of the base plate SUP, and the upper surface of the light-emitting unit LED is flush with the upper surface of the light guide plate LGP or the upper surface of the light-emitting unit LED is lower than the light guide plate LGP. The upper surface of the light-emitting unit LED is lower than the lower surface of the light shielding plate SS. It should be noted that the protruding structure SP can be pressed back so that the top of the light shielding plate SS under the base plate SUP has a flat surface. In Figure 7, the effect of the protruding structure SP formed on the light-shielding plate SS can come from the fact that the internal reflection portion RL0 on the light-shielding plate SS above the light-emitting unit LED is formed with a curved surface or a slope due to the protruding structure SP; because the straight interior The reflection angle provided by the reflective part RL0 is small, and it is difficult to guide upward light to directly enter the light from the hole wall of the light guide plate hole L0 of the light guide plate LGP.

Please refer to FIG. 8 , which is a partial cross-sectional view of a light-emitting keyboard LKB according to another embodiment of the present invention. As shown in FIG. 8 , the upper surface of the light-emitting unit LED can be higher than the upper surface of the light guide plate LGP and lower than the lower surface of the light shielding plate SS. That is to say, the upper surface of the light-emitting unit LED can be located between the upper surface of the light guide plate LGP and between the lower surfaces of the visor SS. In other words, if necessary, the light-emitting unit LED can also exceed the upper surface of the light guide plate LGP. For example, the protruding structure SP can make room for the thickness of the light-shielding plate SS itself and the thickness of the upper and lower glue layers of the light-shielding plate SS to accommodate the light-emitting unit LED. space; at this time, the upper surface of the light-emitting unit LED will be located between the lower surface of the base plate SUP and the upper surface of the light guide plate LGP. Thereby, when the upper surface of the light-emitting unit LED is higher than the upper surface of the light guide plate LGP, the protruding structure SP can provide a space for accommodating the light-emitting unit LED to prevent interference between the light-emitting unit LED and the light shielding plate SS.

Please refer to FIG. 9 , which is a partial cross-sectional view of the luminous keyboard LKB according to another embodiment of the present invention. As shown in FIG. 9 , the luminous keyboard LKB may not include the protruding structure BP shown in FIG. 4 or the protruding structure SP shown in FIG. 7 . In this embodiment, the upper surface of the light-emitting unit LED is flush with the upper surface of the light guide plate LGP or the upper surface of the light-emitting unit LED is lower than the upper surface of the light guide plate LGP and higher than the lower surface of the light guide plate LGP. In this way, the amount of light emitted by the light-emitting unit LED entering the light guide plate LGP can be increased, thereby improving the consistency of the overall light emission.

Please refer to FIG. 10 , which is another partial top view of the luminous keyboard LKB in FIG. 1 . As shown in FIG. 10 , the plurality of external microstructure areas OMS and the plurality of internal microstructure areas IMS at least partially overlap with the projection of the gaps Gx and Gy between any two adjacent keys KS1 , KS2 and KS3 . Three adjacent buttons KS1, KS2, and KS3 may have three adjacent external microstructure areas OMS, where the three adjacent external microstructure areas OMS are combined together in the X and Y directions. The two external microstructure areas OMS outside the two non-intersecting wires of the light-emitting light panel LCB disposed under a button KS can have the same pattern, which can have the same size, the same shape and the same distance (wires) in the two same areas outside). Within the projection range of a single key KS (for example, a square key), the two outer microstructure areas OMS may have different patterns defined by the key KS. For two adjacent keys KS in the Y direction, two adjacent outer microstructure areas OMS may have different patterns defined by the two adjacent keys KS.

Please refer to FIG. 11 , which is another partial top view of the luminous keyboard LKB in FIG. 1 . As shown in Figure 11, a board hole BH can be opened on the light-emitting lamp panel LCB, where the board hole BH is used for fixing or heat dissipation. A shielding portion MP can be provided on the light-emitting lamp panel LCB, wherein the shielding portion MP surrounds the plate hole BH to shield and absorb light and prevent light from leaking from the plate hole BH. In practical applications, the mask part MP can be a light-absorbing or opaque substrate from the luminescent lamp panel LCB, that is, the first reflective layer RL1, circuit layer, and insulating layer (if any) above the luminescent lamp panel LCB substrate. If necessary), a hole larger than the plate hole BH is opened so that the exposed mask part MP surrounds the plate hole BH. Another approach in practical applications is to coat another layer of mask part MP on the upper surface of the first reflective layer RL1 of the light-emitting lamp panel LCB to surround the board hole BH. At this time, the hole size of the first reflective layer RL1 is consistent with the panel Hole BH is similar. The plate hole BH and the shielding part MP on the light-emitting lamp panel LCB may correspond to the plate holes and the shielding part on the light shielding plate SS (not shown in the figure). The hole glue HA on the light-emitting lamp board LCB can be disposed on the mask part MP and surround the board hole BH. The pores HC do not overlap with the external microstructure area OMS or any microstructure. The hole HC without the first reflective layer RL1 may be defined between the first reflective layer RL1 and the plate hole BH. The pore HC without adhesive can be defined between the pore adhesive HA and the plate hole BH. The internal microstructure area IMS (between the two non-intersecting wires HT and LT and/or between the two non-intersecting wires STa and STb) does not overlap with the plate hole BH, the hole glue HA and/or the pore HC. A plurality of adjacent keys KS1, KS2, and KS3 in the X and/or Y directions may have adjacent external microstructure areas OMS that collectively surround the mask part MP, the plate hole BH, the porous glue HA, and/or the pore HC. The mask part MP, the plate hole BH, the hole glue HA and/or the hole HC are located between the two non-intersecting wires HT and LT corresponding to the button KS1 and the two non-intersecting wires HT and LT corresponding to the buttons KS2 and KS3. Furthermore, the mask part MP, the plate hole BH, the hole glue HA and/or the hole HC may be located between the wire LT corresponding to the button KS1 and the wires HT corresponding to the buttons KS2 and KS3. It should be noted that the mask part MP, the pore glue HA and the pores HC are schematically shown at the same position in FIG. 11 . However, the definitions of the mask part MP, the pore glue HA and the pores HC can be clearly understood from the above description.

To sum up, the present invention prevents the multiple microstructure areas on the lamp board from overlapping with the two non-intersecting wires, thereby making it possible to utilize the specially configured microstructure areas on the luminescent lamp board to recycle light or auxiliary light extraction, thereby improving Overall glowing consistency. In addition, although the technical solution of the present invention is designed to solve the application problem of low-power light-emitting units, the present invention is also suitable for the application of medium- and high-power light-emitting units in backlight modules.

Furthermore, although the light guide plate LGP helps transmit light to near the edge of the keycap KCC, other problems may occur in the application of the color luminous keyboard LKB. For example, in Figure 10 to Figure 11, multiple buttons KS1/KS2/KS3 are arranged adjacently. When the adjacent buttons KS1/KS2/KS3 must emit different colors of light, the adjacent buttons KS1/KS2 are invaded through the light guide plate LGP. The unnecessary light leakage of /KS3 actually causes pollution and discoloration, and also makes the light-leaked buttons KS1/KS2/KS3 themselves dim in color with insufficient saturation and saturation. The following embodiments of the present invention will introduce multiple technical solutions to solve related problems.

Please refer to FIGS. 12A to 13 . FIG. 12A is a partial top view of the groove pattern SP of the light guide plate LGP of the backlight module BLM according to another embodiment of the present invention. 12B is a partial top view of another groove pattern SP of the light guide plate LGP of the backlight module BLM according to another embodiment of the present invention. Figure 13 is a partial top view exploded view of the light shielding plate of the embodiment of the present invention applicable to Figures 12A and 12B.

In Figure 12A and Figure 13, the light guide plate LGP is provided with a groove pattern SP1/SP2/SP3 corresponding to each keycap KCC1/KCC2/KCC3. The groove pattern SP1/SP2/SP3 surrounds the reflective layer hole RLH or mask of the light shielding plate SS in Figure 13. Cover hole MLH. The groove pattern SP1 includes a plurality of slots Sla1 and Slb1, and the plurality of slots Sla1 and Slb1 are arranged around the reflective layer holes RLH and/or the mask layer holes MLH corresponding to the keycap KCC1; the groove pattern SP2 includes a plurality of slots Sla2 and Slb1. Slb2, multiple slots Sla2 and Slb2 are arranged around the reflective layer hole RLH and/or the mask layer hole MLH corresponding to the keycap KCC2; the slot pattern SP3 includes multiple slots Sla3 and Slb3, and the multiple slots Sla3 and Slb3 surround Arrange the reflective layer holes RLH and/or the mask layer holes MLH corresponding to the keycap KCC3. Each slot Sla1/Sla2/Sla3 and Slb1/Slb2/Slb3 of each slot pattern SP1/SP2/SP3 has three functions: blocking light, reflecting light and allowing light to emerge. Slots Sla1/Sla2/Sla3 and Slb1/Slb2/Slb3 have an air gap (airgap), which can block light and help solve the problem of cross-key contamination of colored light; the walls of slots Sla1/Sla2/Sla3 and Slb1/Slb2/Slb3 are because The characteristics of the light guide plate LGP can still provide total reflection in the critical angle range, and the reflected light helps to recover the light and improve the brightness and saturation of the single-key color; however, the light emission is allowed by using the groove pattern SP1/SP2/SP3 and its The additional problems caused by multiple slots Sla1/Sla2/Sla3 and Slb1/Slb2/Slb3 need to be solved.

Each groove pattern SP1/SP2/SP3 can be respectively disposed between the corresponding reflective layer hole RLH and the edge of the keycap KCC1/KCC2/KCC3; or, each groove pattern SP1/SP2/SP3 can be respectively disposed in the corresponding mask. Between the layer hole MLH and the edge of the keycap KCC1/KCC2/KCC3. In other words, the second reflective layer RL2 or the masking layer ML of the light shielding plate SS in FIG. 13 covers the groove patterns SP1/SP2/SP3 of the light guide plate LGP. Since the side walls of the multiple slots Sla1/Sla2/Sla3 and Slb1/Slb2/Slb3 of the groove pattern SP1/SP2/SP3 can allow light to escape, the reflective layer RL2 or the mask layer ML of the light shielding plate SS covers the groove pattern SP1/SP2 The multiple slots Sla1/Sla2/Sla3 and Slb1/Slb2/Slb3 of /SP3 can avoid unnecessary upward light leakage. In addition, the second reflective layer RL2 of the light shielding plate SS covers the multiple slots Sla1/Sla2/Sla3 and Slb1/Slb2/Slb3 of the groove pattern SP1/SP2/SP3, which can further reflect the recycled light back to the light guide plate LGP. Lateral transfer.

In Figure 12A, the slots Sla1/Sla2/Sla3 and Slb1/Slb2/Slb3 may penetrate the light guide plate LGP or have a depth smaller than the thickness of the light guide plate LGP. The slots Sla1/Sla2/Sla3 correspond to the sides of the reflective layer hole RLH and/or the mask layer hole MLH, or correspond to the sides of the keycaps KCC1/KCC2/KCC3. The slots Slb1/Slb2/Slb3 correspond to the corners of the reflective layer holes RLH and/or the mask layer holes MLH, or corresponding to the corners of the keycaps KCC1/KCC2/KCC3. The slots Sla1/Sla2/Sla3 and Slb1/Slb2/Slb3 can have different shapes. For example, the slots Sla1/Sla2/Sla3 have a bending angle, such as 120-160 degrees; the slots Slb1/Slb2/Slb3 are arc-shaped. The protruding ends of the slots Sla1/Sla2/Sla3 and Slb1/Slb2/Slb3 are all facing inward, for example toward the direction of the light-emitting unit LED, so that the reflected light travels inward and away from the edge of the keycap KCC1/KCC2/KCC3.

The slots Sl1/Sl2/Sl3 of the slot pattern SP1/SP2/SP3 in Figure 12B have several differences from the slots Sla1/Sla2/Sla3 and Slb1/Slb2/Slb3 in Figure 12A. First, the slots Sl1/Sl2/Sl3 in Figure 12B are located in the gap between the keycaps KCC1/KCC2/KCC3, that is, they are farther away from the original light-emitting unit LED and closer to the keycaps KCC1/KCC2/KCC3 next door. If the blocking/reflective effect of slots Sl1/Sl2/Sl3 is not good, there may be more light than in Figure 12A causing light leakage pollution. However, since the slots Sl1/Sl2/Sl3 in Figure 12B are set at the junction of the keycaps KCC1/KCC2/KCC3, the light from the original light-emitting unit LED has a longer light path in the front projection range of the keycaps KCC1/KCC2/KCC3. , can provide light to the original keycap KCC1/KCC2/KCC3, but the closer to the edge of the keycap KCC1/KCC2/KCC3, the less and weaker the light will be. Secondly, the slots Sl1/Sl2/Sl3 in Figure 12B are all linear, parallel or corresponding to the sides of the reflective layer hole RLH and/or the mask layer hole MLH, or parallel or corresponding to the side of the keycap KCC1/KCC2/KCC3. side. The linear slots Sl1/Sl2/Sl3 may provide weak reflection effects, which may need to be improved by arc surfaces or multi-angle vertical sections. In addition, any of the slots Sl1/Sl2/Sl3 can be selectively connected to the board hole BH of the backlight module BLM. When the slots Sl1/Sl2/Sl3 are connected to the plate hole BH, the light blocking effect is better; in addition, the light guide plate LGP is usually made of high molecular polymer, and temperature changes can easily cause obvious expansion and contraction, and the slots Sl1/Sl2/ When Sl3 is connected to plate hole BH, the influence of temperature change will be relatively small.

Generally speaking, the light transmitted from the light-emitting unit LED to the edge of the keycap KCC1/KCC2/KCC3 may have a large proportion of total reflection and transverse transmission. How can we make these lights reach the multiple slots of the groove pattern SP1/SP2/SP3? The front reflection, recovery and steering of Sla1/Sla2/Sla3 and Slb1/Slb2/Slb3 are the problems to be solved by the present invention. Furthermore, how to reduce the light that finally passes through the side walls of the multiple slots Sla1/Sla2/Sla3 and Slb1/Slb2/Slb3 of the groove pattern SP1/SP2/SP3 and penetrates into the adjacent keycaps KCC1/KCC2/ The amount of light of KCC3 is also a problem to be further solved by the present invention.

In order to solve the above problem, the technical means proposed by the embodiment of the present invention is to provide a groove microstructure area SMS and an edge microstructure area EMS. Please refer to FIGS. 14 and 15 , and also to FIGS. 12A to 13 . FIG. 14 is a partial cross-sectional view of a light-emitting keyboard according to another embodiment of the present invention. FIG. 15 is a partial top view of the light guide plate and the light panel of the backlight module of the embodiment of FIG. 14 .

First, from the Z direction, the groove microstructure area SMS can be respectively provided between the slots Sl/Sl1/Sl2/Sl3, Sla1/Sla2/Sla3 and Slb1/Slb2/Slb3 and the reflective layer hole RLH; alternatively, the groove microstructure area SMS The structure area SMS is provided between the slots Sl/Sl1/Sl2/Sl3, Sla1/Sla2/Sla3 and Slb1/Slb2/Slb3 and the mask layer hole MLH. The groove microstructure area SMS can be realized by a plurality of microstructure areas MS on the first reflective layer RL1 of the luminous lamp panel LCB in the aforementioned embodiment, such as the inner microstructure area IMS or the outer microstructure area OMS. The groove microstructure area SMS is arranged parallel to the light guide plate LGP in principle.

The groove microstructure area SMS can also be arranged on the light shielding plate SS parallel to the light guide plate LGP. In practical applications, a microstructure with a diffusion effect can be formed from a part of the reflective layer RL, or a layer of microstructure area MS can be independently provided below the reflective layer RL. . For example, the reflective layer RL uses ink with larger-sized reflective particles. When the reflective layer RL is sprayed or printed, concave/convex areas, or irregular uneven reflective surfaces are simultaneously formed, so that the reflective layer RL itself can form a microstructure area. MS is used as the groove microstructure area SMS; alternatively, a layer of independent microstructure area MS is sprayed or printed under the reflective layer RL, and an uneven reflective surface can also be provided as the groove microstructure area SMS.

In addition, the groove microstructure area SMS (and the edge microstructure area EMS and the hole microstructure area HMS introduced later) can also be provided on the upper or lower surface of the light guide plate LGP itself. However, in order to make the drawing simple and clear, it is not drawn shown in each figure. The microstructure area on the surface of the light guide plate LGP can be laser-engraved or stamped concave micro-dots of any shape, or micro-dots composed of reflective paint. The groove microstructure area SMS on the surface of the light guide plate LGP itself can destroy total reflection and directly provide a diffusion effect, including turning part of the light to travel inward. On the other hand, the groove microstructure area SMS on the light shielding plate SS and the groove microstructure area SMS on the light-emitting lamp panel LCB diffuse the light emitted from the upper and lower surfaces of the light guide plate LGP so that it can be partially reflected and partially recycled. and local steering.

In this way, the light transmitted laterally outward by the light guide plate LGP can be absorbed by the groove microstructure area SMS, The groove microstructure area SMS of the light guide plate LGP and the groove microstructure area SMS of the luminous lamp panel LCB perform partial reflection, partial recovery and partial steering, which can greatly weaken and reduce the arrival of the slots Sl/Sl1/Sl2/Sl3, Sla1/Sla2/ The light from Sla3 and Slb1/Slb2/Slb3 further reduces the amount of light that invades the corresponding area of the adjacent keycap KCC1/KCC2/KCC3.

At the same time, whether it is located on the first reflective layer RL1 of the light-emitting lamp panel LCB or on the light shielding plate SS, the groove microstructure area SMS can also be further connected with the slots Sl/Sl1/Sl2/Sl3, Sla1/Sla2/Sla3 and Slb1/Slb2/ Slb3 overlap. Viewed from the The first reflective layer RL1 is covered up and down. If necessary, it can also be selectively covered up and down by the two-layer groove microstructure area SMS on the first reflective layer RL1 of the light shielding plate SS and the luminescent lamp panel LCB. The light that enters the slots Sl/Sl1/Sl2/Sl3, Sla1/Sla2/Sla3 and Slb1/Slb2/Slb3 can be partially reflected, partially recycled and partially diverted again through the overlapping slot microstructure area SMS, and combined with the air gap The blocking effect once again reduces the amount of light that invades the corresponding areas of adjacent keycaps KCC1/KCC2/KCC3.

The relevant edge microstructure area EMS is arranged outside the slots Sl/Sl1/Sl2/Sl3, Sla1/Sla2/Sla3 and Slb1/Slb2/Slb3 on the optical path transmitted outward by the light-emitting unit LED. The edge microstructure area EMS can be implemented on the luminous lamp panel LCB, light shielding panel SS and light guide plate LGP in the same manner as the groove microstructure area SMS. In addition, combining the groove microstructure area SMS and the edge microstructure area EMS located before and after the slots Sl/Sl1/Sl2/Sl3, Sla1/Sla2/Sla3 and Slb1/Slb2/Slb3 on the optical path, it can also be said that the slot Sl/Sl1/ Sl2/Sl3, Sla1/Sla2/Sla3 and Slb1/Slb2/Slb3 are surrounded and/or overlapped by the larger inner microstructure area IMS/outer microstructure area OMS.

Based on the above configuration, in Figure 15, the edge microstructure area EMS located in the gap Gx of the keycap KCC2/KCC3 can be realized by either the inner microstructure area IMS/the outer microstructure area OMS alone or jointly. The edge microstructure area EMS here is located between a pair of groove patterns SP2/SP3, and the pair of groove patterns SP2/SP3 correspond to two adjacent keycaps KCC2/KCC3. In other words, the edge microstructure area EMS here is located between at least a pair of slots Sl2/Sl3. The at least a pair of slots Sl2/S3 partially surrounds two adjacent reflective layer holes RLH and/or two adjacent reflective layer holes RLH. Mask layer holes MLH. At the same time, the aforementioned pair of groove patterns SP2/SP3, edge microstructure area EMS/inner microstructure area IMS, two adjacent reflective layer holes RLH and/or two mask layer holes MLH are all located in a group of non-intersecting groups. Between (main) wires HT2/LT2.

Similarly, the gap Gy between keycaps KCC1 and KCC2/KCC3 can be realized by the external microstructure area OMS. The edge microstructure area EMS here is located between three groups of groove patterns SP2/SP3, and the three groups of groove patterns SP2/SP3 correspond to the three adjacent keycaps KCC1/KCC2/KCC3 and the three adjacent light-emitting units LED1/ LED2/LED3. In other words, the edge microstructure area EMS/external microstructure area OMS here is located between at least three slots Sl1/Sl2/Sl3, and the at least three slots Sl1/Sl2/S3 respectively partially surround the adjacent three Reflective layer holes RLH or three mask layer holes MLH. The at least three slots Sl1/Sl2/S3 can also be said to be located between three sets of disjoint (sub) wires STa1/STb1, STa2/STb2 and STa3/STb3; or it can be said that the at least three slots Sl1/Sl2/S3 are Located between two sets of disjoint (main) conductors HT1/LT1 and HT2/LT2. The two sets of non-intersecting (main) wires HT1/LT1 and HT2/LT2 pass through (or are electrically connected to) three adjacent light-emitting units LED1/LED2/LED3 respectively; the two groups of non-intersecting (main) wires HT1/LT1 and HT2/LT2 also pass through three adjacent reflective layer holes RLH or three mask layer holes MLH respectively.

Looking at the keycap KCC3 range, Figure 15 also reveals a light-emitting light panel LCB combined with a light guide plate LGP. Such a light-emitting light panel LCB includes a light guide plate LGP and at least a pair of non-intersecting wires LT/HT (or STa/STb ), at least two microstructure areas IMS or OMS and a light emitting unit LED. The light guide plate LGP includes a light guide plate hole L0 and at least two slots S13. The at least one pair of non-intersecting wires LT/HT (or STa/STb) is located below the light guide plate LGP. The at least two microstructure areas IMS (or OMS) are spaced apart from each other, and the at least two microstructure areas IMS (or OMS) do not overlap with the at least one pair of non-intersecting wires LT/HT (or STa/STb). The light-emitting unit LED is located in the light guide plate hole L0 and between at least two microstructure areas IMS (or OMS). Wherein, the at least two slots S13 are arranged relatively around the light-emitting unit LED, and the at least two microstructure areas IMS (or OMS) are located between the at least two slots S13. The at least two microstructure areas IMS located between the at least two slots S13 can be, for example, two internal microstructures within the range of the reflective layer hole RLH/light shielding layer hole MLH of the light shielding plate SS corresponding to the keycap KCC3 The area IMS can also be two external microstructure areas OMS within the range of the reflective layer hole RLH/the light-shielding layer hole MLH.

Traditionally, those skilled in the art have a stereotype that microstructures can only be used in the area corresponding to the light exit area (reflective layer hole RLH and/or mask layer hole MLH of the light shielding plate SS). Not only that, intuitively, light-absorbing materials should be used in the light-emitting/light-leakage areas close to the LGP holes or edges of the light guide plate, and reflective materials should not be used, let alone diffusion technology. The foregoing and following embodiments of the present invention break these rigid concepts and achieve excellent technical results in backlight module BLM-related products with low-brightness light-emitting units LED and light guide plates LGP.

In addition to the application between adjacent keycaps KCC1/KCC2/KCC3, the aforementioned microstructure can be further used to reduce light leakage and recycle light, for example, it can be used to solve the problem of light leakage in the plate hole BH of the backlight module BLM (Figure 15 to Figure 17), leading to Scenarios include light leakage EG at the edge of the light plate LGP (Figure 14 to Figure 17) and light recycling RH from the component hole of the light guide plate LGP (Figure 16 to Figure 17).

Please continue to refer to Figures 15 to 17, and refer to Figures 12A to 14 together. FIG. 16 is a partial cross-sectional view of a light-emitting keyboard according to yet another embodiment of the present invention. FIG. 17 is a partial top view exploded view of the light shielding plate of the present invention applicable to the embodiment of FIG. 16 .

In addition to the application between adjacent keycaps KCC1/KCC2/KCC3, the edge microstructure area EMS can also be applied to the edge EG light leakage of the light guide plate LGP (Figure 14 to Figure 17). The edge microstructure area EMS is formed between the edge EG of the light guide plate LGP and the adjacent (closest to the edge EG of the light guide plate LGP) reflective layer holes RLH and/or mask layer holes MLH. Since the slot Sl3 or the slot pattern SP3 also has the effect of blocking light, the edge microstructure area EMS can also be said to be formed between the edge EG of the light guide plate LGP and the slot Sl3, or formed between the edge EG and the slot of the light guide plate LGP. between pattern SP3. In this way, the edge microstructure area EMS, the slot Sl3 and the groove pattern SP3 can fully partially reflect, partially recycle, partially divert and partially block the light before it reaches the edge EG of the light guide plate LGP, so as to achieve the effect of reducing light leakage.

The hole microstructure area HMS can be implemented on the luminous lamp panel LCB, light shielding plate SS or light guide plate LGP in the same manner as the groove microstructure area SMS. The hole microstructure area HMS is set up around the plate hole BH of the backlight module BLM; the hole microstructure area HMS is located between the plate hole BH and the edge microstructure area EMS in Figure 15. The edge microstructure area EMS can be combined with the hole microstructure area HMS Seamless connection, and the edge microstructure area EMS and the hole microstructure area HMS can both be realized by at least one external microstructure area OMS between two sets of disjoint (main) wires HT1/LT1 and HT2/LT2. Overall similar, at least one microstructure area MS/HMS/EMS is located between three adjacent keycaps KCC1/KCC2/KCC (or three light emitting units LED1/LED2/LED3); this at least one microstructure area MS/HMS/ The EMS is also located between the plate hole BH of the backlight module BLM and at least three slots Sl1/Sl2/Sl3; the at least three slots Sl1/Sl2/S3 respectively partially surround the three adjacent reflective layer holes RLH or three Mask layer hole MLH; at least three slots Sl1/Sl2/S3 can also be said to be located between two sets of disjoint (main) conductors HT1/LT1 and HT2/LT2. To expand the scope, in Figure 15, there is at least one slot Sl1/Sl2/S3 between the three multi-color light-emitting units LED1/LED2/LED3 and the plate hole BH; and, each multi-color light-emitting unit LED1/LED2/ There is at least one microstructure area MS/IMS/OMS between LED3 and the corresponding at least one slot Sl1/Sl2/S3; at the same time, there is at least one microstructure area between the three slots Sl1/Sl2/S3 and the plate hole BH. MS/HMS/EMS/OMS. In this way, based on the multiplication of the diffusion effect of the microstructure and the isolation effect of the slot, the light can be partially reflected, partially recycled, partially diverted and partially blocked before reaching the plate hole BH, thereby reducing the problem of light leakage in the plate hole BH.

Next, regarding the light recovery of the component hole RH of the light guide plate LGP, the light shielding plate SS can be covered around and/or inside the component hole RH of the light guide plate LGP, and the first reflective layer RL1 of the light-emitting lamp panel LCB can also be at least partially connected to the component. Overlap around and/or within hole RH. The component hole RH is used to accommodate at least one non-light-emitting component Rs protruding on the light-emitting lamp board LCB, such as a resistor, a capacitor, a driving chip or other non-light-emitting components required by the light source circuit. The aforementioned hole microstructure area HMS can be arranged on the luminous lamp panel LCB, the light shielding plate SS and/or the light guide plate LGP and surrounds the component hole RH; the hole microstructure area HMS can also be arranged on the luminous lamp panel LCB and/or the light shielding plate SS and surrounds the component hole RH. Overlaps the inside of component hole RH. Although there are limited concerns about light leakage from the component hole RH, through the setting of the HMS in the hole microstructure area, the light can be fully partially reflected, partially recycled and partially diverted before and after the light reaches the component hole RH, so as to fully recover and utilize the light. Effect.

The groove microstructure area SMS, the edge microstructure area EMS, the hole microstructure area HMS, and the internal/external microstructure area IMS/OMS mentioned in the previous embodiments are all areas composed of multiple microstructures respectively. In practical applications, the groove microstructure area SMS, the edge microstructure area EMS, the hole microstructure area HMS, and the internal/external microstructure area IMS/OMS can be selectively integrated and provided in one or more microstructure layers MSL. For example, in Figures 14 and 15, the (first) microstructure layer MSL may include a groove microstructure area SMS, an edge microstructure area EMS, and a hole microstructure area that are simultaneously provided on the first reflective layer RL1 of the light emitting lamp panel LCB. HMS and internal/external microstructure area IMS/OMS. In Figures 14 and 15, the (second) microstructure layer MSL can include a groove microstructure area SMS, an edge microstructure area EMS and a hole microstructure area HMS that are simultaneously provided on the light shielding plate SS (Figures 15 and 17 ). If necessary, a (third) microstructure layer MSL (not shown in the figure) can be provided on the light guide plate LGP. For example, it can include multiple microstructure areas, which are respectively connected with the groove microstructure area SMS and edge microstructure area of the light shielding plate SS. The structure area EMS corresponds to the hole microstructure area HMS up and down.

Finally, in order to improve the saturation and chroma of the single-key color backlight effect, it is also extremely important to fully mix the light. Referring to FIG. 18 , FIG. 18 is a partial top view exploded view of a lamp panel according to yet another embodiment of the present invention. When the light-emitting unit LED is encapsulated with three-color chips to provide three-color light (such as red, green, and blue), special measures need to be taken to achieve a good light mixing effect. First of all, the arrangement of the three-color die can be arranged continuously from long side to long side. The advantage is that the overall size of the light-emitting unit LED is shorter, and the offset of the parts is less likely to interfere with the small-sized light guide plate hole L0. However, the disadvantage is that it is mixed. The light effect is poor; because the long sides of the crystal grains with larger light output are blocked by the long sides of adjacent grains, it is difficult for different colors of light to cross-transmit. Another approach is as shown in Figure 18. Each long side of the three-color crystal grains is parallel to the long side of the entire light-emitting unit LED. That is, each long side of the three-color crystal grains is arranged along the Y direction, or in other words, the three-color crystal grains are arranged along the Y direction. The grains are arranged one after the other with their short sides. In this way, the long sides of the grains with larger light output and wider light emission range are overlapping and interlaced with each other facing the X direction in the figure, and a better light mixing effect can be achieved in the two larger fan-shaped areas in the X direction; at the same time, in the Y Because the short sides of the crystal grains are adjacent to each other, the amount of light emitted from the short sides of the crystal grains is small and the light emission range is small. The light blocked by the short sides of the crystal grains is also small, and the polarization problem caused is also small.

In summary, the present invention optimizes the configuration of the microstructure area and slots, thereby improving the problem of colored light intrusion and contaminating adjacent keycaps, and at the same time making full use of limited light to achieve the optimal chroma and color saturation of a single key, and then With the arrangement of multi-color crystal grains in the light-emitting unit, the light mixing effect of the three-color LED grains in the light-emitting unit is further increased.

Obviously, the above-mentioned embodiments of the present invention are only examples to clearly illustrate the present invention, and are not intended to limit the implementation of the present invention. For those of ordinary skill in the art, based on the above description, they can also make There are other different forms of changes or modifications, and it is impossible to exhaustively enumerate all the embodiments here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims (24)

1. The utility model provides a backlight unit for at least one key cap is shone to this backlight unit, its characterized in that includes:

two light emitting units;

the light guide plate is provided with two light guide plate holes for respectively accommodating the two light-emitting units, and also comprises at least one slot, wherein the at least one slot is positioned between the two light-emitting units;

The lamp panel is arranged in parallel with the light guide plate and is provided with at least one pair of non-intersecting main wires, and the at least one pair of non-intersecting main wires are electrically connected with the two light-emitting units; and

the microstructure layer is arranged in parallel with the light guide plate and comprises at least one microstructure area;

the at least one microstructure area is located between the two light emitting units, and the at least one slot of the light guide plate is at least partially located in the at least one microstructure area.

2. The backlight module of claim 1, wherein the light guide plate has two slots, the two slots respectively correspond to the two light emitting units, and at least a portion of the at least one microstructure area is located between the two slots.

3. The backlight module of claim 1, wherein the at least one pair of non-intersecting primary wires pass through the at least one slot.

4. The backlight module according to claim 1, wherein the at least one microstructure area and the at least one pair of non-intersecting main wires do not overlap.

5. The backlight module of claim 1, wherein the at least one microstructure area at least partially surrounds the at least one slot.

6. The backlight module of claim 1, wherein the at least one microstructure area at least partially overlaps the at least one slot.

7. The backlight module according to claim 1, wherein the backlight module comprises a light shielding plate, the light shielding plate comprises an internal reflection portion, and the internal reflection portion covers the two light emitting units.

8. The backlight module of claim 1, wherein the backlight module comprises a light shielding plate comprising a reflective layer hole capable of emitting light, and wherein at least a portion of the at least one microstructure area is located between the reflective layer hole and the at least one slot.

9. The backlight module according to claim 1, wherein the backlight module comprises a light shielding plate, the light shielding plate comprises two adjacent reflective layer holes capable of emitting light, and the at least one slot is respectively located between the two adjacent reflective layer holes.

10. The backlight module of claim 1, wherein the backlight module comprises a light shielding plate, and the at least one microstructure area is located on a surface of at least one of the light shielding plate, the light guide plate and the lamp panel.

11. The backlight module of claim 1, wherein the backlight module comprises a light shielding plate comprising two adjacent reflective layer holes through which the light can exit, the at least one pair of non-intersecting main wires passing through the two reflective layer holes.

12. The backlight module of claim 1, wherein the lamp panel further comprises a first reflective layer, and the at least one microstructure area is located on a surface of the first reflective layer.

13. The backlight module of claim 1, wherein the lamp panel further comprises a first reflective layer covering the at least one pair of non-intersecting main wires.

14. The backlight module of claim 1, wherein the two light emitting units respectively comprise three dies for providing three colors of light, and the three dies are arranged with their short sides aligned in succession.

15. The backlight module of claim 1, wherein the backlight module has a plate hole, and the at least one slot is connected to the plate hole.

16. The backlight module according to claim 1, wherein the at least one microstructure area is located between the at least one pair of non-intersecting main wires.

17. The backlight module of claim 1, wherein the at least one slot is located between the at least one pair of non-intersecting main wires.

18. The utility model provides a backlight unit for at least one key cap is shone to this backlight unit, its characterized in that includes:

a light emitting unit;

the light guide plate is provided with a light guide plate hole for accommodating the light emitting unit and also comprises a groove pattern, wherein the groove pattern is arranged around the light emitting unit and comprises a plurality of slots;

The lamp panel is provided with at least one pair of non-intersecting wires, and the at least one pair of non-intersecting wires are electrically connected with the light-emitting unit; and

the microstructure layer is arranged parallel to the light guide plate and comprises at least one microstructure area;

wherein the groove pattern overlaps the at least one microstructure area.

19. The utility model provides a backlight unit for at least one key cap is shone to this backlight unit, its characterized in that includes:

a light emitting unit;

the light guide plate is provided with a light guide plate hole for accommodating the light-emitting unit and also provided with an edge which is far away from the light-emitting unit;

the lamp panel is provided with at least one pair of non-intersecting wires, and the at least one pair of non-intersecting wires are electrically connected with the light-emitting unit;

a microstructure layer disposed parallel to the light guide plate, the microstructure layer including a microstructure area; and

the light shielding plate comprises a reflecting layer hole capable of emitting light;

wherein at least a portion of the microstructure area is located between the reflective layer hole and the edge of the light guide plate.

20. The backlight module of claim 19, wherein the light guide plate has a slot and an edge, the slot is located outside the reflective layer hole, and the microstructure area is formed between the edge of the light guide plate and the slot.

21. A luminescent keyboard, comprising:

a plurality of keys having key caps; and

the backlight module according to any one of claims 1 to 20, wherein the backlight module is located under the plurality of keys.

22. The utility model provides a luminous lamp plate which characterized in that, this luminous lamp plate includes:

the light guide plate comprises a light guide plate hole and at least two slots;

at least one pair of non-intersecting wires disposed parallel to the light guide plate;

a microstructure layer disposed parallel to the light guide plate, the microstructure layer comprising at least two microstructure areas, the at least two microstructure areas being spaced apart from each other; and

the light-emitting unit is positioned in the light guide plate hole and positioned between the at least two microstructure areas;

wherein the at least two slots are oppositely disposed around the light emitting unit, and the at least two microstructure areas are located between the at least two slots.

23. The utility model provides a luminous lamp plate which characterized in that, this luminous lamp plate includes:

three light emitting units;

the light guide plate comprises at least three light guide plate holes for respectively accommodating the three light-emitting units, and at least three slots positioned among the three light-emitting units; and

At least one microstructure layer arranged parallel to the light guide plate, wherein the at least one microstructure layer comprises at least one microstructure area, and the at least one microstructure area is positioned among the three light emitting units;

wherein the at least one microstructure area surrounds between the at least three light guide plate holes and the at least three slots.

24. The utility model provides a luminous lamp plate which characterized in that, this luminous lamp plate includes:

three light emitting units;

the light guide plate comprises at least three light guide plate holes for respectively accommodating the three light emitting units, at least three slots positioned among the three light emitting units, and plate holes positioned among the at least three slots; and

at least one microstructure layer arranged parallel to the light guide plate, wherein the at least one microstructure layer comprises at least one microstructure area, and the at least one microstructure area is positioned among the three light emitting units;

wherein the at least one microstructure area surrounds between the plate hole and the at least three slots.