Backlight structure of notebook computer keyboard

Abstract

The utility model provides a notebook computer keyboard backlight structure applied to the field of notebook computer keyboard backlight structures. The notebook computer keyboard backlight structure comprises a single-sided circuit board, an insulating material layer, a jumper conductive circuit material layer, a light emitting diode driving chip, a light emitting diode and a keyboard matrix circuit, the circuit layer of the single-sided circuit board is combined with the circuit layer of the jumper conductive circuit material layer on the insulating material layer, the backlight function of a light emitting diode and the keyboard function of a keyboard matrix circuit are achieved on the single-sided circuit board at the same time, the single-sided circuit board is adopted to replace a multi-layer circuit board, the number of layers of the circuit board is reduced, and the cost is reduced. The manufacturing process of the single-sided circuit board is relatively simple, complex processes such as lamination of multiple layers of circuit boards are reduced, and the production efficiency is improved. And meanwhile, the single-sided circuit board structure is thinner, so that the light and thin design of the notebook computer is facilitated, and the portability of the product is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of notebook keyboard backlight structure, in particular to a notebook computer keyboard backlight structure. BACKGROUND

[0002] The existing notebook computer keyboard backlight setting usually involves two aspects of hardware support and software control. The notebook computer needs to build-in a keyboard module supporting backlight, usually using LED as the light source. The keyboard also needs to have a light guide film or other optical components to uniformly distribute light. The backlight function of the keyboard is usually controlled by the mainboard of the notebook computer, and some high-end models have independent control chips. The mainboard needs to provide power supply and signal channel for the keyboard, and the driver program is responsible for light effect management.

[0003] With the continuous development of notebook computers, users have higher and higher requirements for the functions and use experience of notebook computers. As an important input device of notebook computers, the backlight function of the keyboard not only facilitates the use of users in a relatively dark environment, but also improves the overall appearance and sense of technology of the notebook computer.

[0004] At present, the notebook computer keyboard backlight structure commonly seen in the market usually adopts a multi-layer circuit board to realize the wiring of the keyboard function matrix and the backlight function. Although the multi-layer circuit board can meet the complex wiring requirements, it has problems such as high cost, complex manufacturing process, and large thickness, which is not conducive to the lightweight design of notebook computers. In addition, the interlayer interference between the multi-layer circuit boards may also affect the stability of signal transmission and reduce the reliability of the keyboard and backlight function.

[0005] Therefore, a new notebook computer keyboard backlight structure is needed, which can realize the keyboard function matrix and the backlight function on a single-sided circuit board at the same time, reduce the cost, simplify the manufacturing process, and improve the stability of signal transmission to meet the development needs of lightweight and high performance of notebook computers INVENTION CONTENTS

[0006] The present application aims to realize the backlight function of light-emitting diodes and the keyboard function of keyboard matrix circuit on a single-sided circuit board by combining an insulating material layer and a jumper conductive circuit material layer on a single-sided circuit board, solve the problems of high cost, complex process and interlayer interference of existing multi-layer circuit boards, and provide a notebook computer keyboard backlight structure compared with the prior art, which comprises: a single-sided circuit board, an insulating material layer, a jumper conductive circuit material layer, a light-emitting diode driving chip, a light-emitting diode and a keyboard matrix circuit.

[0007] The single-sided circuit board is composed of a single-sided circuit board substrate layer and a single-sided circuit board substrate circuit layer.

[0008] The insulating material layer is arranged on one side surface of the single-sided circuit board, the jumper conductive circuit material layer, the light-emitting diode driving chip, the light-emitting diode and the keyboard matrix circuit are arranged on the side surface of the insulating material layer away from the single-sided circuit board, and the insulating material layer is used for isolating the electric performance interference between the conductive circuit of the jumper conductive circuit material layer and the circuit on the single-sided circuit board.

[0009] The power supply line of the light-emitting diode driving chip is connected with the power supply circuit of the single-sided circuit board, and the light-emitting diode driving chip is provided with a power supply.

[0010] The light-emitting diode obtains a driving power supply through the light-emitting diode driving chip, and the transmission line of the driving power supply is connected in a mode selected according to the wiring condition of the single-sided circuit board.

[0011] The data control signal line of the light-emitting diode driving chip is electrically connected with the data control signal line of the keyboard matrix circuit, so as to realize the control of the keyboard operation and the backlight display.

[0012] The light-emitting diode driving chip is electrically connected with the light-emitting diode, and the light-emitting diode is driven to emit light.

[0013] The backlight function of the light-emitting diode and the keyboard function of the keyboard matrix circuit are realized on the single-sided circuit board simultaneously by combining the circuit layer of the single-sided circuit board with the circuit layer of the jumper conductive circuit material layer on the insulating material layer.

[0014] Further, the single-sided circuit board is one of a flexible circuit board, a surface conductive paste printed circuit board and a hard printed circuit board, so as to adapt to the design requirements of different notebook computer keyboards.

[0015] Further, the driving power supply connection mode between the light-emitting diode and the light-emitting diode driving chip is:

[0016] When there is enough layout space for the circuit of the single-sided circuit board, the circuit arranged on the single-sided circuit board is used for connection.

[0017] When the layout space of the circuit of the single-sided circuit board is insufficient, the circuit of the jumper conductive circuit material layer arranged on the insulating material layer is used for connection, so as to optimize the wiring structure.

[0018] Further, the connection mode of the data control signal line of the light-emitting diode driving chip and the data control signal line of the keyboard matrix circuit is:

[0019] If the wiring of the keyboard matrix circuit is concentrated on the circuit layer of the single-sided circuit board and there is available circuit, the circuit layer of the single-sided circuit board is used for connection.

[0020] If the wiring layer of the single-sided circuit board is tight, the wiring layer of the jumper conductive circuit material layer provided on the insulating material layer is connected to ensure the stable transmission of the data signal.

[0021] Further, the electrical connection mode between the light emitting diode driving chip and the light emitting diode is:

[0022] When the single-sided circuit board can meet the wiring requirements, the wiring layer of the single-sided circuit board is connected;

[0023] When the single-sided circuit board wiring is limited, the wiring layer of the jumper conductive circuit material layer provided on the insulating material layer is connected to ensure the effective transmission of the driving signal.

[0024] Further, the insulating material layer is one of insulating paint, insulating film or protective cover film containing window, and the thickness of the insulating material layer is 0.02-0.1mm, which can effectively isolate the jumper conductive circuit material layer and the electrical interference on the single-sided circuit board, while controlling the thickness of the overall structure.

[0025] Further, the jumper conductive circuit material layer is made of copper foil etching process, and the thickness of the copper foil is 0.01-0.05mm to ensure good conductivity.

[0026] Compared with the prior art, the advantages of the present application are:

[0027] The single-sided circuit board is used instead of the multi-layer circuit board, which reduces the number of layers of the circuit board, reduces the raw material cost and manufacturing process cost, and the manufacturing process of the single-sided circuit board is relatively simple, which reduces the complex process such as lamination of the multi-layer circuit board, improves the production efficiency. At the same time, the single-sided circuit board structure is thinner, which is beneficial to the light and thin design of the notebook computer and improves the portability of the product. The insulating material layer effectively isolates the jumper conductive circuit material layer and the electrical interference on the single-sided circuit board, improves the stability of signal transmission, and ensures the reliability of the keyboard and backlight function. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 The structure of the present application is shown in the figure.

[0029] Explanation of figure mark:

[0030] 1, single-sided circuit board; 11, single-sided circuit board substrate layer; 12, single-sided circuit board substrate wiring layer; 2, insulating material layer; 3, jumper conductive circuit material layer; 4, light emitting diode driving chip; 5, light emitting diode; 6, keyboard matrix circuit. DETAILED DESCRIPTION

[0031] The embodiments will be described clearly and completely in connection with the drawings of the specification, and all other embodiments obtained by those skilled in the art without creative labor on the basis of the embodiments in the present application belong to the scope of protection of the present application.

[0032] Embodiments:

[0033] The utility model provides a notebook computer keyboard backlight structure, please refer to Figure 1 Including single -sided circuit board 1, insulating material layer 2, jumper conductive circuit material layer 3, light emitting diode drive chip 4, light emitting diode 5 and keyboard matrix circuit 6.

[0034] Single -sided circuit board 1 is combined by single -sided circuit board substrate layer 11 and single -sided circuit board substrate circuit layer 12, and the type of single -sided circuit board 1 can be one of flexible circuit board, surface conductive paste printed circuit board or hard printed circuit board to adapt to the design requirement of different notebook computer keyboard.

[0035] Among them, for flexible circuit board, large -scale production can be carried out through roll -to -roll process, has good flexibility and bendability, is applicable to the keyboard design of need bending wiring, and surface conductive paste printed circuit board forms circuit through the way of printing conductive paste, and the process is simple, and the cost is lower, and hard printed circuit board has higher mechanical strength and stability, and is applicable to the keyboard of higher structural strength requirement.

[0036] Further, single -sided circuit board substrate layer 11 can select polyimide, polyester and other materials, and has good insulation performance and mechanical properties. Single -sided circuit board substrate circuit layer 12 forms conductive circuit on the substrate layer through etching, plating and other processes.

[0037] Insulating material layer 2 is arranged on one side surface of single -sided circuit board 1, and insulating material layer 2 can be one of insulating paint, insulating film or protective cover film containing window, and the thickness is 0.02-0.1mm. The function of insulating material layer 2 is to prevent the conductive circuit of jumper conductive circuit material layer 3 and the circuit on single -sided circuit board 1 from interfering with each other in electrical performance.

[0038] Further, if insulating material layer 2 selects insulating paint, the insulating paint can be uniformly coated on single -sided circuit board 1 by spraying, brushing and other ways, and then the insulating layer with a thickness of 0.02-0.1mm is formed after curing by drying. If insulating film is selected, the prepared insulating film is attached to single -sided circuit board 1. If protective cover film containing window is selected, the window can be opened on the cover film according to the need of circuit layout, and then it is covered on single -sided circuit board 1.

[0039] The jumper conductive circuit material layer 3, the light emitting diode driving chip 4, the light emitting diode 5 and the keyboard matrix circuit 6 are arranged on the side surface of the insulating material layer 2 away from the single-sided circuit board 1. The jumper conductive circuit material layer 3 is made of copper foil etching process, specifically, copper foil is covered on the insulating material layer 2, and then the part of copper foil that is not needed is removed through photoetching, etching and other processes to form a conductive circuit with a thickness of 0.01-0.05 mm to ensure good conductivity.

[0040] The power supply line of the light emitting diode driving chip 4 is connected with the power supply circuit of the single-sided circuit board 1 to provide power supply for the light emitting diode driving chip 4. The light emitting diode 5 obtains driving power supply through the light emitting diode driving chip 4, and the transmission line of the driving power supply is connected in a mode selected according to the wiring condition of the single-sided circuit board 1: when there is enough layout space for the circuit of the single-sided circuit board 1, the circuit arranged on the single-sided circuit board 1 is connected; when the layout space of the circuit of the single-sided circuit board 1 is insufficient, the circuit of the jumper conductive circuit material layer 3 arranged on the insulating material layer 2 is connected.

[0041] The data control signal line of the light emitting diode driving chip 4 is electrically connected with the data control signal line of the keyboard matrix circuit 6 in a mode that: if the wiring of the keyboard matrix circuit 6 is concentrated on the circuit layer of the single-sided circuit board 1 and there is available circuit, the circuit layer of the single-sided circuit board 1 is connected; if the wiring of the circuit layer of the single-sided circuit board 1 is tight, the circuit layer of the jumper conductive circuit material layer 3 arranged on the insulating material layer 2 is connected.

[0042] The light emitting diode driving chip 4 is electrically connected with the light emitting diode 5 in a mode that: when the single-sided circuit board 1 can meet the wiring requirement, the circuit layer of the single-sided circuit board 1 is connected; when the wiring of the single-sided circuit board 1 is limited, the circuit layer of the jumper conductive circuit material layer 3 arranged on the insulating material layer 2 is connected.

[0043] The backlight function of the light emitting diode 5 and the keyboard function of the keyboard matrix circuit 6 are realized on the single-sided circuit board 1 by combining the circuit layer of the single-sided circuit board 1 with the circuit layer of the jumper conductive circuit material layer 3 arranged on the insulating material layer 2. The single-sided circuit board is used instead of the multi-layer circuit board to reduce the number of layers of the circuit board, reduce the cost of raw materials and manufacturing process, and the manufacturing process of the single-sided circuit board is relatively simple, which reduces the complex process such as laminating of the multi-layer circuit board and improves the production efficiency. At the same time, the structure of the single-sided circuit board is thinner, which is beneficial to the light and thin design of the notebook computer and improves the portability of the product. The insulating material layer effectively isolates the electrical interference between the jumper conductive circuit material layer and the circuit on the single-sided circuit board, improves the stability of signal transmission and ensures the reliability of the keyboard and backlight functions.

[0044] The above merely describes the best mode of the present application in combination with the current actual demand, but the protection scope of the present application is not limited thereto.

Claims

1. A notebook computer keyboard backlight structure, characterized in that, The application relates to a single-surface circuit board (1), an insulating material layer (2), a jumper conductive circuit material layer (3), a light-emitting diode driving chip (4), a light-emitting diode (5) and a keyboard matrix circuit (6). The single-surface circuit board (1) is composed of a single-surface circuit board substrate layer (11) and a single-surface circuit board substrate circuit layer (12). The insulating material layer (2) is arranged on one side surface of the single-surface circuit board (1), the jumper conductive circuit material layer (3), the light-emitting diode driving chip (4), the light-emitting diode (5) and the keyboard matrix circuit (6) are arranged on the side surface of the insulating material layer (2) far from the single-surface circuit board (1), and the insulating material layer (2) is used for isolating the electric performance interference between the conductive circuit of the jumper conductive circuit material layer (3) and the circuit on the single-surface circuit board (1). The power supply line of the light-emitting diode driving chip (4) is connected with the power supply circuit of the single-surface circuit board (1) to provide power supply for the light-emitting diode driving chip (4). The light-emitting diode (5) obtains driving power supply through the light-emitting diode driving chip (4), and the transmission line of the driving power supply is selected according to the wiring condition of the single-surface circuit board (1). The data control signal line of the light-emitting diode driving chip (4) is electrically connected with the data control signal line of the keyboard matrix circuit (6) to realize the control of keyboard operation and backlight display. The light-emitting diode driving chip (4) is electrically connected with the light-emitting diode (5) to drive the light-emitting diode (5) to emit light. The backlight function of the light-emitting diode (5) and the keyboard function of the keyboard matrix circuit (6) are realized on the single-surface circuit board (1) through the combination of the circuit layer of the single-surface circuit board (1) and the circuit layer of the jumper conductive circuit material layer (3) on the insulating material layer (2). The single-surface circuit board (1) is one of a flexible circuit board, a surface conductive paste printed circuit board and a hard printed circuit board to adapt to the design requirements of different notebook computer keyboards.

2. The notebook computer keyboard backlight structure of claim 1, wherein, The driving power supply connection mode between the light-emitting diode (5) and the light-emitting diode driving chip (4) is as follows:

3. The notebook computer keyboard backlight structure of claim 1, wherein, When there is enough layout space for the circuit of the single-surface circuit board (1), the circuit arranged on the single-surface circuit board (1) is used for connection; When the layout space of the circuit of the single-surface circuit board (1) is insufficient, the circuit of the jumper conductive circuit material layer (3) arranged on the insulating material layer (2) is used for connection to optimize the wiring structure. The connection mode of the data control signal line of the light-emitting diode driving chip (4) and the data control signal line of the keyboard matrix circuit (6) is as follows:

4. The notebook computer keyboard backlight structure of claim 1, wherein, If the wiring of the keyboard matrix circuit (6) is concentrated on the circuit layer of the single-surface circuit board (1) and there is available circuit, the circuit layer of the single-surface circuit board (1) is used for connection; If the circuit layer of the single-surface circuit board (1) is in a tight wiring state, the circuit layer of the jumper conductive circuit material layer (3) arranged on the insulating material layer (2) is used for connection to ensure the stable transmission of data signals. The electric connection mode between the light-emitting diode driving chip (4) and the light-emitting diode (5) is as follows:

5. The notebook computer keyboard backlight structure of claim 1, wherein, ​ When the single-sided circuit board (1) can meet the wiring requirements, the connection is realized through the circuit layer of the single-sided circuit board (1); When the single-sided circuit board (1) is limited in wiring, the connection is realized through the circuit layer of the jumper conductive circuit material layer (3) arranged on the insulating material layer (2), and the effective transmission of the driving signal is ensured.

6. The notebook computer keyboard backlight structure of claim 1, wherein, The insulating material layer (2) is one of insulating paint, insulating film or protective cover film containing windowing, the thickness of the insulating material layer (2) is 0.02-0.1mm, which can effectively isolate the jumper conductive circuit material layer (3) and the electrical interference on the single-sided circuit board (1), and control the thickness of the overall structure.

7. The notebook computer keyboard backlight structure of claim 1, wherein, The jumper conductive circuit material layer (3) is made of copper foil etching process, and the thickness of the copper foil is 0.01-0.05mm, so as to ensure good conductivity.

Images