Notebook computer touchpad module integrated with 3D touch display function

Abstract

The utility model relates to a notebook computer touchpad module integrating a 3D touch display function. The notebook computer touchpad module comprises a transparent cover plate, a 3D pressure sensor layer, a touch sensor layer, an optical bonding layer, a TFT liquid crystal display screen, a backlight module and a linear motor which are sequentially stacked from top to bottom. The 3D pressure sensor layer is used for detecting touch pressure intensity and three-dimensional space coordinates, the touch sensor layer is used for detecting a two-dimensional touch position, the TFT liquid crystal display screen displays input content in real time, and the linear motor provides tactile feedback; and the module is electrically connected with the mainboard of the notebook computer through the flexible circuit board, so that the functions of handwriting input, 3D touch interaction and dynamic display are realized. According to the utility model, an existing touchpad is designed into the 3D touch display module, so that the display function and the 3D touch function are added, the handwriting input requirement of a client on a notebook computer is met, and the memory function of people on Chinese characters can be enhanced.

Description

Technical Field

[0001] This utility model relates to the field of touch module technology, and more specifically, to a laptop touchpad module with integrated 3D touch display function. Background Technology

[0002] Currently, laptop touchpads are simply opaque panels with relatively limited functionality. They are inconvenient to operate, do not support handwriting input, and are therefore less usable compared to handheld electronic devices. Utility Model Content

[0003] The purpose of this invention is to propose a laptop touchpad module with integrated 3D touch display function, which aims to enhance the functionality of the laptop touchpad.

[0004] Specifically, the technical solution of this utility model is as follows: a laptop touchpad module integrating 3D touch display function is proposed, including a transparent cover plate, a 3D pressure sensor layer, a touch sensor layer, an optical adhesive layer, a TFT LCD screen, a backlight module, and a linear motor stacked from top to bottom; the 3D pressure sensor layer is used to detect the touch pressure intensity and three-dimensional spatial coordinates, the touch sensor layer is used to detect the two-dimensional touch position, the TFT LCD screen displays the input content in real time, and the linear motor provides tactile feedback; the module is electrically connected to the laptop motherboard through a flexible circuit board to realize handwriting input, 3D touch interaction, and dynamic display functions.

[0005] As a preferred technical solution, the 3D pressure sensor layer includes a protective layer, an upper electrode layer, a pressure-sensitive material layer, a lower electrode layer, and a substrate support layer stacked from top to bottom.

[0006] As a preferred technical solution, the touch sensor layer is a mutual capacitance touch structure, including: horizontal driving electrodes and vertical sensing electrodes arranged in a cross pattern to form touch nodes; the driving electrodes and sensing electrodes are made of metal mesh or indium tin oxide material, with electrode line width ≤10μm and spacing ≤50μm.

[0007] As a preferred technical solution, the optical adhesive layer is an optically transparent adhesive or an optical liquid adhesive with a thickness of 0.05 to 0.15 mm, a refractive index that matches the material of the adjacent layer, and a light transmittance of ≥92%; the TFT liquid crystal display screen has a resolution of 1920×1080 or higher, supports naked-eye 3D display mode, and forms a stereoscopic visual effect by controlling the grating through the deflection of liquid crystal molecules.

[0008] As a preferred technical solution, the backlight module includes: a light guide plate with LED light sources at the edges and an adjustable brightness range of 50 to 500 nits; a quantum dot enhancement film and a brightness enhancement film with a color gamut coverage of ≥120%; and a reflective sheet and a diffuser sheet to homogenize light emission and reduce energy consumption.

[0009] As a preferred technical solution, the linear motor is integrated below the backlight module, including: a voice coil motor and an elastic reset structure, with a vibration feedback delay of ≤5ms; a programmable driver chip that supports multi-level vibration intensity and frequency adjustment to simulate the friction of writing on paper or the touch of a pen.

[0010] As a preferred technical solution, it also includes a function control module, which has the following built-in features: a Chinese character stroke order recognition unit that corrects writing errors and generates memory enhancement prompts through trajectory analysis; a 3D modeling interface that converts touch input data into three-dimensional coordinate system parameters and supports real-time rendering by CAD software; and a pressure-ink mapping algorithm that dynamically adjusts the thickness and transparency of the displayed strokes based on the pressure sensitivity.

[0011] As a preferred technical solution, the flexible circuit board adopts a double-layer hollow design, including: a first bonding area connecting the 3D pressure sensor layer and the touch sensor layer, with a pin pitch ≤0.1mm; a second bonding area connecting the TFT LCD screen and the backlight module, with an impedance matching error ≤5%; and a signal shielding layer wrapping the high-frequency signal lines to reduce electromagnetic interference.

[0012] As a preferred technical solution, it also includes a mode switching unit, which can trigger the following working modes through gesture operation or pressure threshold: handwriting input mode: disable 3D touch function and optimize the handwriting sampling rate to 240Hz; 3D modeling mode: activate Z-axis coordinate detection and support multi-point spatial touch; painting mode: link pressure-ink mapping algorithm to simulate oil painting / watercolor brush stroke effects.

[0013] As a preferred technical solution, the transparent cover is coated with an anti-glare coating and an oleophobic layer, with a hardness ≥7H and a light transmittance ≥95%; the edges are formed by CNC milling to create a 2.5D arc transition, and the thickness of the touch area is ≤2mm.

[0014] The beneficial effects of this utility model are: This utility model designs the existing touchpad as a 3D touch display module, the main purpose of which is to increase the display and 3D touch functions, meet the customer's handwriting input needs for laptops, enhance people's memory of Chinese characters, and also serve as a drawing pen input device to meet the needs of computer art and painting personnel. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1This is a schematic diagram of a stacked structure of a laptop touchpad module integrating 3D touch display function, as proposed in an embodiment of this utility model.

[0017] Figure 2 This is a schematic diagram of the 3D pressure sensor layer structure proposed in an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached drawings: 1. Transparent cover plate; 2. 3D pressure sensor layer; 2. Protective layer; 21. Upper electrode layer; 22. Pressure-sensitive material layer; 23. Lower electrode layer; 24. Substrate support layer; 25. Touch sensor layer; 3. Optical adhesive layer; 4. TFT LCD display; 5. Backlight module; 6. Linear motor; 7. Detailed Implementation

[0019] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0020] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0021] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0022] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0023] It should be noted that "multiple" as mentioned in this article refers to two or more.

[0024] Example

[0025] like Figure 1As shown in this embodiment, a laptop touchpad module integrating 3D touch display function is proposed. It includes, from top to bottom, a transparent cover 1, a 3D pressure sensor layer 2, a touch sensor layer 3, an optical adhesive layer 4, a TFT LCD screen 5, a backlight module 6, and a linear motor 7, stacked sequentially. The 3D pressure sensor layer 2 is used to detect touch pressure intensity and three-dimensional spatial coordinates; the touch sensor layer 3 is used to detect two-dimensional touch position; the TFT LCD screen 5 displays input content in real time; and the linear motor 7 provides tactile feedback. The module is electrically connected to the laptop motherboard via a flexible circuit board, realizing handwriting input, 3D touch interaction, and dynamic display functions.

[0026] Preferred, such as Figure 2 As shown, the 3D pressure sensor layer 2 includes a protective layer 21, an upper electrode layer 22, a pressure-sensitive material layer 23, a lower electrode layer 24, and a substrate support layer 25 stacked from top to bottom.

[0027] Preferably, the touch sensor layer 3 is a mutual capacitance touch structure, including: horizontal driving electrodes and vertical sensing electrodes arranged in a cross pattern to form touch nodes; the driving electrodes and sensing electrodes are made of metal mesh or indium tin oxide material, with electrode line width ≤10μm and spacing ≤50μm.

[0028] Preferably, the optical adhesive layer 4 is an optically transparent adhesive or an optical liquid adhesive with a thickness of 0.05 to 0.15 mm, a refractive index that matches the material of the adjacent layer, and a light transmittance of ≥92%; the TFT liquid crystal display screen 5 has a resolution of 1920×1080 or higher, supports naked-eye 3D display mode, and forms a stereoscopic visual effect by controlling the grating through the deflection of liquid crystal molecules.

[0029] Preferably, the backlight module 6 includes: a light guide plate with LED light sources at the edges and an adjustable brightness range of 50 to 500 nits; a quantum dot enhancement film and a brightness enhancement film with a color gamut coverage of ≥120%; and a reflective sheet and a diffuser sheet to homogenize light emission and reduce energy consumption.

[0030] Preferably, the linear motor 7 is integrated below the backlight module 6 and includes: a voice coil motor and an elastic reset structure, with a vibration feedback delay of ≤5ms; a programmable drive chip that supports multi-level vibration intensity and frequency adjustment to simulate the friction of writing on paper or the touch of a pen.

[0031] Preferably, it also includes a function control module, which has the following built-in features: a Chinese character stroke order recognition unit, which corrects writing errors and generates memory enhancement prompts through trajectory analysis; a 3D modeling interface, which converts touch input data into three-dimensional coordinate system parameters and supports real-time rendering by CAD software; and a pressure-ink mapping algorithm, which dynamically adjusts the thickness and transparency of the displayed strokes according to the pressure sensitivity.

[0032] Preferably, the flexible circuit board adopts a double-layer hollow design, including: a first bonding area connecting the 3D pressure sensor layer 2 and the touch sensor layer 3, with a pin pitch ≤0.1mm; a second bonding area connecting the TFT LCD screen 5 and the backlight module 6, with an impedance matching error ≤5%; and a signal shielding layer wrapping the high-frequency signal lines to reduce electromagnetic interference.

[0033] Preferably, it also includes a mode switching unit, which can trigger the following working modes through gesture operation or pressure threshold: handwriting input mode: disable 3D touch function and optimize handwriting sampling rate to 240Hz; 3D modeling mode: activate Z-axis coordinate detection and support multi-point spatial touch; painting mode: link pressure-ink mapping algorithm to simulate oil painting / watercolor brush stroke effects.

[0034] Preferably, the transparent cover 1 is coated with an anti-glare coating and an oleophobic layer, with a hardness ≥7H and a light transmittance ≥95%; the edge is formed by CNC milling to form a 2.5D arc transition, and the thickness of the touch area is ≤2mm.

[0035] This patent solves the latency problem caused by the separation of touch and display in the prior art by using a pressure-ink mapping algorithm and mode switching, and refers to the pixel correction method of naked-eye 3D display devices.

[0036] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A notebook computer touchpad module integrated with 3D touch control display function, characterized in that, The device includes, from top to bottom, a transparent cover plate, a 3D pressure sensor layer, a touch sensor layer, an optical adhesive layer, a TFT LCD screen, a backlight module, and a linear motor. The 3D pressure sensor layer is used to detect the touch pressure intensity and three-dimensional spatial coordinates, the touch sensor layer is used to detect the two-dimensional touch position, the TFT LCD screen displays the input content in real time, and the linear motor provides tactile feedback. The module is electrically connected to the motherboard of a laptop computer via a flexible circuit board, enabling handwriting input, 3D touch interaction, and dynamic display functions.

2. The touchpad module of claim 1, wherein, The 3D pressure sensor layer includes a protective layer, an upper electrode layer, a pressure-sensitive material layer, a lower electrode layer, and a substrate support layer stacked from top to bottom.

3. The touchpad module of claim 2, wherein, The touch sensor layer is a mutual capacitance touch structure, including: horizontal driving electrodes and vertical sensing electrodes arranged in a cross pattern to form touch nodes; the driving electrodes and sensing electrodes are made of metal mesh or indium tin oxide material, with electrode line width ≤10μm and spacing ≤50μm.

4. The touchpad module of claim 1, wherein, The optical adhesive layer is an optically transparent adhesive or an optical liquid adhesive with a thickness of 0.05 to 0.15 mm, a refractive index that matches the material of the adjacent layer, and a light transmittance of ≥92%. The TFT liquid crystal display screen has a resolution of 1920×1080 or higher, supports naked-eye 3D display mode, and forms a stereoscopic visual effect by controlling the grating through the deflection of liquid crystal molecules.

5. The touchpad module of claim 1, wherein, The backlight module includes: a light guide plate with LED light sources at the edges, the brightness of which is adjustable from 50 to 500 nits; a quantum dot enhancement film and a brightness enhancement film, with a color gamut coverage of ≥120%; and a reflective sheet and a diffuser sheet to homogenize light output and reduce energy consumption.

6. The touchpad module of claim 1, wherein, The linear motor is integrated below the backlight module and includes: a voice coil motor and an elastic reset structure with a vibration feedback delay of ≤5ms; a programmable drive chip that supports multi-level vibration intensity and frequency adjustment to simulate the friction of writing on paper or the touch of a pen. 7.The touchpad module of claim 1, wherein, It also includes a function control module, which has a built-in Chinese character stroke order recognition unit that corrects writing errors and generates memory enhancement prompts through trajectory analysis. The 3D modeling interface converts touch input data into three-dimensional coordinate system parameters, supporting real-time rendering in CAD software; the pressure-ink mapping algorithm dynamically adjusts the thickness and transparency of the displayed strokes based on the pressure sensitivity.

8. The touchpad module of claim 7, wherein, The flexible circuit board adopts a double-layer hollow design, including: a first bonding area connecting the 3D pressure sensor layer and the touch sensor layer, with a pin pitch ≤0.1mm; a second bonding area connecting the TFT LCD screen and the backlight module, with an impedance matching error ≤5%; and a signal shielding layer wrapping the high-frequency signal lines to reduce electromagnetic interference.

9. The trackpad module of any of claims 1-8, wherein, It also includes a mode switching unit that can trigger the following working modes through gesture operation or pressure threshold: Handwriting input mode: disables 3D touch function and optimizes the handwriting sampling rate to 240Hz; 3D modeling mode: activates Z-axis coordinate detection and supports multi-point spatial touch; Painting mode: links pressure-ink mapping algorithm to simulate oil painting / watercolor brush stroke effects.

10. The trackpad module of any one of claims 1-8, wherein, The transparent cover is coated with an anti-glare coating and an oleophobic layer, with a hardness ≥7H and a light transmittance ≥95%; the edges are formed by CNC milling to create a 2.5D arc transition, and the thickness of the touch area is ≤2mm.

Images