RGB keyboard dynamic backlight module

Abstract

The utility model discloses an RGB keyboard dynamic backlight module, the RGB keyboard dynamic backlight module is installed on the back of a keyboard, the RGB keyboard dynamic backlight module is formed by sequentially stacking a shading film, a light guide plate, a reflecting film and a light source assembly from top to bottom, the shading film is a transparent film, black shading ink is printed on the front face of the shading film, and the light guide plate is arranged on the back of the light source assembly. White ink is printed on the back face of the reflecting film, black shading ink is printed on the back face of the reflecting film, white light reflecting ink is printed on the front face of the reflecting film, the light source assembly comprises a plurality of LED lamp beads with built-in driving ICs and a backlight control circuit board, and the LED lamp beads with the built-in driving ICs are logically ranked. And an external control command sequentially controls the light effect of each LED lamp bead according to the logic sequence through the backlight control circuit board. By means of the mode, the dynamic effect of the backlight template can be remarkably improved under the condition that the circuit arrangement difficulty and the overall cost are not increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to computer equipment field especially, it is RGB keyboard dynamic back light module. BACKGROUND

[0002] RGB back light module is a kind of special device installed in the back of keyboard, can make keyboard present various different photoelectric effect mode according to the needs of user, the RGB keyboard module commonly used in market is generally to the luminous LED installed in the back of keyboard is controlled by area, that is, simultaneously control the brightness of multiple lamp beads in a way, do like this, overall dynamic effect is not enough delicate, in order to improve the overall dynamic effect, the best way is to control the brightness of each LED individually, so overall circuit becomes complex, not only high cost, and circuit arrangement difficulty, poor flexibility. UTILITY MODEL CONTENTS

[0003] The utility model mainly solves the technical problem to provide a kind of keyboard back light module, can improve control precision, improve back light effect while reducing overall cost.

[0004] To solve the above technical problems, one technical scheme of the utility model is: provide a kind of RGB keyboard dynamic back light module, the RGB keyboard dynamic back light module is installed in the back of keyboard, the RGB keyboard dynamic back light module is stacked from top to bottom by light shielding film, light guide plate, reflective film and light source assembly, the light shielding film is transparent film, the light shielding film front surface prints black shading ink, back surface prints white ink, the reflective film back surface prints black shading ink, front surface prints white reflective ink, the light source assembly includes multiple LED lamp beads with built-in driving IC and back light control circuit board, the multiple LED lamp beads with built-in driving IC are logically sequenced, and external control command is sequentially controlled the light effect of each LED lamp bead by the back light control circuit board according to logical sequencing.

[0005] In a preferred embodiment of the utility model, the back light control circuit board is a flexible circuit board or an ultra-thin PCB board with a thickness not exceeding 0.2 mm.

[0006] In a preferred embodiment of the utility model, the multiple LED lamp beads with built-in driving IC are all powered by the back light control circuit. The multiple LED lamp beads with built-in driving IC are connected in parallel with each other.

[0007] In a preferred embodiment of the utility model, the back light control circuit layout area is the top area, the bottom area and the middle area of the corresponding keyboard.

[0008] In a preferred embodiment of the utility model, the light emitting surface of the LED lamp bead with built-in driving IC is directed towards the middle of the keyboard.

[0009] The utility model discloses the ordinary luminous LED in the back light template is changed to the LED lamp pearl with built-in drive IC, so just need not specially aim at each lamp pearl design independent control circuit when installing, only need to realize the independent control of the brightness effect of each lamp pearl through external MCU order, so can improve the dynamic effect of back light template under the condition of not increasing circuit arrangement difficulty and overall cost significantly. BRIEF DESCRIPTION OF DRAWINGS

[0010] Fig. 1 It is the schematic diagram of each laminated structure of the preferred embodiment of the utility model;

[0011] Fig. 2 It is the luminous logic control schematic diagram of the lamp pearl in the shown embodiment;

[0012] Fig. 3 It is the lamp pearl placement mode schematic diagram in the shown embodiment;

[0013] 1. Light shielding film, 2. Light guide plate, 3. Reflective film, 4. Light source assembly;

[0014] D is the LED lamp pearl. DETAILED DESCRIPTION

[0015] The preferred embodiment of the utility model is described in detail below in combination with the drawings, so that the advantages and characteristics of the utility model can be more easily understood by the person skilled in the art, and the protection scope of the utility model is defined more clearly and explicitly.

[0016] Please refer to Figs. 1 to 3 The utility model embodiment includes:

[0017] Embodiment 1

[0018] The RGB keyboard dynamic backlight module is installed on the back of the keyboard, characterized in that the RGB keyboard dynamic backlight module is stacked from top to bottom by a light shielding film 1, a light guide plate 2, a reflective film 3 and a light source assembly 4, the light shielding film 1 is a transparent film, the front surface of the light shielding film 1 is printed with black light shielding ink, and the back surface is printed with white ink, the back surface of the reflective film 3 is printed with black light shielding ink, and the front surface is printed with white reflective ink, the light source assembly 4 includes a plurality of LED lamp beads with built-in driving ICs and a backlight control circuit board, the backlight control circuit board is a flexible circuit board FPC, and the plurality of LED lamp beads with built-in driving ICs are all powered in series by the backlight control circuit. The plurality of LED lamp beads with built-in driving ICs are connected in parallel with each other, the plurality of LED lamp beads with built-in driving ICs are logically sorted, and an external control command controls the light effect of each LED lamp bead in turn according to the logical sorting through the backlight control circuit board. By adopting this structure, in actual use, the external MCU command can sequentially send control information to the built-in driving IC of each LED lamp bead to individually control the light effect of each LED lamp bead, so that the dynamic effect of the light mode is more delicate, and the external performance is more cool and amazing. Moreover, since each LED lamp bead is independently powered by the FPC, there is no series connection relationship between the plurality of LED lamp beads, so that any problem of any LED lamp bead in the middle will not affect the surrounding LED lamp beads, on the one hand, the overall fault tolerance is improved, and on the other hand, the problem can be easily located, and the problem point can be quickly found and replaced.

[0019] The FPC layout area corresponds to the top area, the bottom area and the middle area of the keyboard. The light emitting surface of the LED lamp bead with built-in driving IC faces the middle of the keyboard. The FPC can be arranged in the top area, the bottom area and the middle area according to the needs of the cooperation of the middle part of the notebook keyboard in actual arrangement. On the one hand, these areas have a larger space for arranging the FPC, and the FPC board is thin, which will not affect the overall stacking structure when placed in these positions. On the other hand, these areas can conveniently and relatively uniformly set the placement position of the LED lamp bead. If placed on one side of the keyboard, the light guiding route on the other side is relatively long, which is prone to the problem of uneven light. The light emitting surface of the LED lamp bead facing the middle of the keyboard can make the light directly irradiate on the light guide plate 2, not only reducing light loss, but also preventing mutual interference of surrounding light and affecting the final light effect.

[0020] Embodiment 2

[0021] An RGB keyboard dynamic backlight module is installed on the back of the keyboard. The module is characterized by being stacked from top to bottom, comprising a light-shielding film 1, a light guide plate 2, a reflective film 3, and a light source assembly 4. The light-shielding film 1 is a transparent film with black light-shielding ink printed on its front and white ink printed on its back. The reflective film 3 has black light-shielding ink printed on its back and white reflective ink printed on its front. The light source assembly 4 includes multiple LED beads with built-in driver ICs and a backlight control circuit board. The backlight control circuit board is a surface-mount ultra-thin PCB with a thickness between 0.1 and 0.2 mm. The multiple LED beads with built-in driver ICs are all powered by the backlight control circuit board in series. The LED beads with built-in driver ICs are connected in parallel and logically ordered. External control commands control the lighting effect of each LED bead sequentially according to the logical order via the backlight control circuit board. By adopting this structure, in actual use, external MCU commands can sequentially send control information to the built-in driver IC of each LED bead to individually control the light effect of each LED bead, thereby making the dynamic effect of the lighting mode more delicate and the external appearance more dazzling. Moreover, since each LED bead is independently powered by an ultra-thin PCB and there is no series relationship between multiple LED beads, a problem with any LED bead will not affect the surrounding LED beads. On the one hand, it improves the overall fault tolerance, and on the other hand, it is easy to locate the problem when it occurs, and the problem point can be quickly found and replaced.

[0022] The backlight control circuit is positioned in the top, bottom, and middle areas of the keyboard. The LEDs with built-in driver ICs emit light towards the center of the keyboard. The ultra-thin PCB can be placed in the top, bottom, or middle areas to accommodate the components of the laptop keyboard. These areas offer ample space for the ultra-thin PCB, and their thinness ensures they don't affect the overall stacking structure. Furthermore, these areas allow for relatively uniform placement of the LEDs. Placing them on one side of the keyboard results in a longer light path relative to the other side, potentially leading to uneven lighting. By emitting light towards the center of the keyboard, the LEDs directly illuminate the light guide plate 2, reducing light loss and preventing interference from surrounding light sources that could affect the final lighting effect.

[0023] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An RGB keyboard dynamic backlight module, which is installed at the back of a keyboard, characterized in that, The RGB keyboard dynamic backlight module is stacked from top to bottom by a light shielding film, a light guide plate, a reflective film and a light source assembly, the light shielding film is a transparent film, the front surface of the light shielding film is printed with black light shielding ink, the back surface is printed with white ink, the back surface of the reflective film is printed with black light shielding ink, and the front surface is printed with white reflective ink, the light source assembly includes a plurality of LED lamp beads with built-in driving ICs and a backlight control circuit board, the plurality of LED lamp beads with built-in driving ICs are logically sequenced, and an external control command controls the light effect of each LED lamp bead in sequence through the backlight control circuit board according to the logical sequence.

2. The RGB keyboard dynamic backlight module according to claim 1, wherein, The backlight control circuit board is a flexible circuit board or an ultra-thin PCB board with a thickness of not more than 0.2 mm. 3.The RGB keyboard dynamic backlight module according to claim 1, characterized in that, The plurality of LED lamp beads with built-in driving ICs are all powered in series by the backlight control circuit.

4. The RGB keyboard dynamic backlight module according to claim 3, characterized in that, The plurality of LED lamp beads with built-in driving ICs are mutually connected in parallel.

5. The RGB keyboard dynamic backlight module according to claim 1, wherein, The backlight control circuit layout area is the top area, the bottom area and the middle area of the corresponding keyboard.

6. The RGB keyboard dynamic backlight module according to claim 1, wherein, The light emitting surface of the LED lamp bead with built-in driving IC is directed towards the middle of the keyboard.

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