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CN-224217404-U - Multi-layer combined keyboard backlight module

CN224217404UCN 224217404 UCN224217404 UCN 224217404UCN-224217404-U

Abstract

The utility model relates to the field of keyboards, in particular to a multi-layer combined keyboard backlight module. The backlight module comprises a circuit board and a key cap, wherein a light-emitting chip is arranged on the circuit board, a reflecting layer and a packaging layer are printed on the surface of the circuit board, the reflecting layer and the light-emitting chip are wrapped between the circuit board and the packaging layer, and a shading layer is arranged between every two adjacent packaging layers. The utility model completes the encapsulation of the luminous chip by printing the encapsulation layer and synchronously covers the corresponding area of the key cap, and simultaneously prints the shading layer at the gap position between the encapsulation areas, thereby avoiding the occurrence of the condition of increasing the thickness of the product because of using the light guide sheet and the shading sheet.

Inventors

  • LI SENLIN

Assignees

  • 东莞市森广光电科技有限公司

Dates

Publication Date
20260508
Application Date
20250526

Claims (6)

  1. 1. The utility model provides a multilayer combination formula keyboard backlight unit, includes circuit board (2) and key cap (7), characterized by, install luminescent chip (4) on circuit board (2), printed reflection stratum (3) and encapsulation layer (5) on the face of circuit board (2), reflection stratum (3) and luminescent chip (4) are wrapped up between circuit board (2) and encapsulation layer (5), are provided with shading layer (6) between adjacent encapsulation layer (5).
  2. 2. The multi-layer combined keyboard backlight module according to claim 1, wherein the circuit board (2) is fixed with a bonding pad (21), the light emitting chip (4) is provided with a P-type semiconductor electrode (41) and an N-type semiconductor electrode (42), the P-type semiconductor electrode (41) and the N-type semiconductor electrode (42) are respectively welded on different bonding pads (21), and the P-type semiconductor electrode (41) and the N-type semiconductor electrode (42) face downward the circuit board (2).
  3. 3. The multi-layer combined keyboard backlight module according to claim 1, wherein the reflecting layer (3) is a white ink layer.
  4. 4. The multi-layer combined keyboard backlight module according to claim 1, wherein the packaging layer (5) is a resin layer or a silica gel layer.
  5. 5. The multi-layer combined keyboard backlight module according to claim 1, wherein the light shielding layer (6) is a light shielding ink layer.
  6. 6. The multi-layer combined keyboard backlight module according to claim 1, wherein a single packaging layer (5) is arranged right below the keycap (7).

Description

Multi-layer combined keyboard backlight module Technical Field The utility model relates to the field of keyboards, in particular to a multi-layer combined keyboard backlight module. Background With the development of electronic products, users have increasingly demanded the appearance and functionality of keyboards. The keyboard backlight module is used as an important function for improving the use experience of the keyboard, can facilitate the user to recognize key characters in a dark light environment, and simultaneously requires the keyboard backlight module to have colorful light conversion, so that the visual effect of the keyboard is enhanced. The existing keyboard backlight module adopts a light-emitting chip as a light source, and can realize colorful light conversion, but the light-emitting chip can realize the light emission of a key cap area by matching with a light guide sheet, and meanwhile, the light-shielding sheet is arranged on the light guide sheet to realize the non-light emission of the area between the key caps. The thickness and weight of the product are increased due to the addition of the light guide plate and the light shielding plate. Disclosure of utility model The utility model aims to solve the technical problems described in the background art, and provides a multi-layer combined keyboard backlight module. And meanwhile, a shading layer is printed at a gap position between the packaging areas, so that the situation that the thickness of a product is increased due to the use of a light guide sheet and a shading sheet is avoided. The technical scheme adopted for solving the technical problems is as follows: The utility model provides a multilayer combination formula keyboard backlight unit, includes circuit board and key cap, install the light emitting chip on the circuit board, printed reflection stratum and encapsulation layer on the face of circuit board, reflection stratum and light emitting chip are wrapped up between circuit board and encapsulation layer, are provided with the shading layer between the adjacent encapsulation layer. Specifically, a bonding pad is fixed on the circuit board, a P-type semiconductor electrode and an N-type semiconductor electrode are arranged on the light-emitting chip, the P-type semiconductor electrode and the N-type semiconductor electrode are respectively welded on different bonding pads, and the P-type semiconductor electrode and the N-type semiconductor electrode face to the circuit board below. Specifically, the reflective layer is a white ink layer. Specifically, the packaging layer is a resin layer or a silica gel layer. Specifically, the light shielding layer is a light shielding ink layer. Specifically, a single packaging layer is arranged right below the key cap. The utility model has the beneficial effects that the utility model provides the multi-layer combined keyboard backlight module. And meanwhile, a shading layer is printed at a gap position between the packaging areas, so that the situation that the thickness of a product is increased due to the use of a light guide sheet and a shading sheet is avoided. Drawings The utility model will be further described with reference to the drawings and examples. FIG. 1 is a schematic diagram of the structure of the present utility model; In the figure, 2, a circuit board, 3, a reflecting layer, 4, a light emitting chip, 5, a packaging layer, 6, a shading layer, 7, a key cap, 21. A pad, a p-type semiconductor electrode, a 42. N-type semiconductor electrode. Detailed Description The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model. Fig. 1 is a schematic structural view of the present utility model. As shown in fig. 1, a multi-layer combined keyboard backlight module comprises a circuit board 2 and a keycap 7, wherein a light emitting chip 4 is mounted on the circuit board 2, a reflecting layer 3 and a packaging layer 5 are printed on the board surface of the circuit board 2, the reflecting layer 3 and the light emitting chip 4 are wrapped between the circuit board 2 and the packaging layer 5, and a shading layer 6 is arranged between the adjacent packaging layers 5. When the light emitting chip 4 emits light, the light is emitted from the area between the two light shielding layers 6 to provide light for the key cap 7. The circuit board 2 is fixed with a bonding pad 21, the light emitting chip 4 is provided with a P-type semiconductor electrode 41 and an N-type semiconductor electrode 42, the P-type semiconductor electrode 41 and the N-type semiconductor electrode 42 are respectively welded on different bonding pads 21, and the P-type semiconductor electrode 41 and the N-type semiconductor electrode 42 face the circuit board 2 below. The refle