A bendable creaseless touchpad and touch device
By setting unequal rows of sensor blocks on the front and back of the touchpad and ensuring that the gaps do not overlap, the problem of creases after attaching a stylus to the touchpad is solved, improving the sensitivity and detection response of the stylus.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN BETTERLIFE ELECTRONICS SCI & TECH
- Filing Date
- 2025-06-11
- Publication Date
- 2026-06-30
AI Technical Summary
Existing touchpads develop creases after a stylus is attached, which reduces the stylus's sensitivity.
The touchpad has unequal rows of sensor blocks on the front and back, ensuring that the gaps between rows of front sensor blocks do not overlap with the gaps between rows of back sensor blocks. A flexible circuit board design is used, and the touch sensor blocks and pressure sensor blocks have the same shape and size, with the width of the touch sensor blocks being greater than the width of the pressure sensor blocks.
It achieves crease-free operation when the stylus is rolled up, ensuring the stylus's sensitivity and making the chip's acquisition and detection response more sensitive.
Smart Images
Figure CN224439277U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pressure-sensitive stylus technology, and in particular to a touchpad and touch device that can be bent without creases. Background Technology
[0002] Currently, capacitive pressure-sensitive styluses, replacing direct finger contact with the screen, are widely used in capacitive screen mobile phones, tablets, touch-screen laptops, and other electronic devices, enabling functions such as handwriting input, drawing, and signature. A pressure-sensitive stylus is a writing tool that senses the pressure applied by the user's finger and converts it into an electrical signal. Its working principle involves using an internal pressure sensor to detect the user's pressure, typically a capacitive sensor. Capacitive sensors utilize changes in capacitance to sense the pressure and convert these changes into an electrical signal, thus enabling touch operations on touch-screen devices.
[0003] In current stylus pattern designs, the number of rows of touch patterns on the front of the touchpad is the same as the number of rows of pressure-sensitive patterns on the back. For example... Figure 1 As shown, taking the front touch detection with 36 sensing channels and the back pressure detection with 12 sensing channels as an example, capacitive sensor patterns are generally based on square patterns. The front sensing squares 100 are arranged in a 6x6 grid, consisting of 36 sensing squares 100, which means 36 sensing channels are used; the back sensing squares 200 are arranged in a 6x2 grid, consisting of 12 sensing squares 200. In this design, the number of rows of the front touch pattern and the back pressure pattern is equal, so that the row spacing between the patterns on the front and back is on the same line, such as... Figure 2 As shown, this results in deep creases between the patterns when the stylus is rolled up for assembly. As can be seen from the side view of the stylus, the side appears polygonal, which reduces the sensitivity of the stylus.
[0004] In the process of developing this utility model, the applicant discovered at least the following problems in the prior art:
[0005] Current touchpads develop creases after a stylus is attached, which reduces the stylus's sensitivity. Utility Model Content
[0006] The purpose of this invention is to provide a touchpad and touch device that can be bent without creases, thereby solving the technical problem in the prior art where touchpads develop creases after a stylus is attached, leading to reduced stylus sensitivity. The various technical effects of the preferred solutions among the many technical solutions provided by this invention are detailed below.
[0007] To achieve the above objectives, the present invention provides the following technical solution:
[0008] This utility model provides a bendable touchpad without creases, comprising: a flexible circuit board; M rows and N columns of touch sensing blocks are arranged on the front side of the flexible circuit board, and A rows and B columns of pressure sensing blocks are arranged on the back side; the row spacing between each row of touch sensing blocks is the same as the row spacing between each row of pressure sensing blocks; wherein, M≠A, and the gap between each row of touch sensing blocks does not overlap with the gap between each row of pressure sensing blocks.
[0009] Optionally, 30 touch-sensing blocks are provided on the front side of the flexible circuit board, and the 30 touch-sensing blocks are arranged in 5 rows and 6 columns.
[0010] Optionally, 14 pressure-sensitive blocks are provided on the back of the flexible circuit board, and the 14 pressure-sensitive blocks are arranged in 7 rows and 2 columns.
[0011] Optionally, each of the touch sensing blocks has the same size and shape; each of the pressure sensing blocks has the same size and shape.
[0012] Optionally, the row spacing between each row of touch sensing blocks and the row spacing between each row of pressure sensing blocks are 0.05mm to 0.5mm.
[0013] Optionally, the touch sensing block and the pressure sensing block are rectangular in shape.
[0014] Optionally, the width of the touch sensing block is greater than the width of the pressure sensing block.
[0015] Optionally, the length of the touch sensing block is less than the length of the pressure sensing block.
[0016] A touch device comprising a crease-free touchpad as described above.
[0017] Optionally, the touch device is a stylus.
[0018] Implementing one of the above-described technical solutions of this utility model has the following advantages or beneficial effects:
[0019] This invention sets the number of rows of sensor blocks on the front and back of the touchpad to be unequal, and ensures that the gap between each row of front sensor blocks does not overlap with the gap between each row of back sensor blocks. As a result, after the stylus is rolled up and installed, the installed stylus will not have creases, ensuring the sensitivity of the stylus and making the chip's acquisition and detection response more sensitive. Attached Figure Description
[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:
[0021] Figure 1 This is a schematic diagram of the structure of a conventional touchpad using existing technology;
[0022] Figure 2 This is a schematic diagram of the structure of an existing stylus;
[0023] Figure 3 This is a schematic diagram of the touch panel structure according to Embodiment 1 of this utility model;
[0024] Figure 4 This is a schematic diagram of the structure of the stylus in Embodiment 1 of this utility model;
[0025] In the diagram: 1. Touch sensor block; 2. Pressure sensor block. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, various exemplary embodiments described below will be referenced to the accompanying drawings, which form part of the exemplary embodiments, illustrating various exemplary embodiments that may be adopted to implement this utility model. Unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. It should be understood that they are merely examples of processes, methods, and apparatuses consistent with some aspects of this utility model disclosed as detailed in the appended claims, and other embodiments may be used, or structural and functional modifications may be made to the embodiments listed herein without departing from the scope and spirit of this utility model.
[0027] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," etc., indicate the orientation or positional relationship based on the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the referred element must have a specific orientation, or be constructed and operated in a specific orientation. The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. The term "multiple" means two or more. The terms "connected" and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, integral connections, mechanical connections, electrical connections, communication connections, direct connections, indirect connections through an intermediate medium, and can be the internal connection of two elements or the interaction relationship between two elements. The term "and / or" includes any and all combinations of one or more of the related listed items. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0028] To illustrate the technical solution described in this utility model, specific embodiments are described below, showing only the parts related to the embodiments of this utility model.
[0029] Example 1:
[0030] like Figures 3-4 As shown, this utility model provides a touchpad that can be bent without creases, including: a flexible circuit board; touch sensing blocks 1 arranged in M rows and N columns on the front side of the flexible circuit board, and pressure sensing blocks 2 arranged in A rows and B columns on the back side; the row spacing between each row of touch sensing blocks 1 is the same as the row spacing between each row of pressure sensing blocks 2; wherein, M≠A, and the gap between each row of touch sensing blocks 1 and the gap between each row of pressure sensing blocks 2 do not overlap.
[0031] In this embodiment, the number of rows of sensor blocks on the front and back of the touchpad is set to be unequal, and the gap between each row of sensor blocks on the front does not overlap with the gap between each row of sensor blocks on the back. As a result, after the stylus is rolled up and installed, the installed stylus will not have creases, ensuring the sensitivity of the stylus and making the chip's acquisition and detection response more sensitive.
[0032] As an alternative implementation method, such as Figure 3As shown, 30 touch-sensitive blocks 1 are arranged in 5 rows and 6 columns on the front side of the flexible circuit board. 14 pressure-sensitive blocks 2 are arranged in 7 rows and 2 columns on the back side of the flexible circuit board. The arrangement of the touch-sensitive blocks 1 in 5 rows and 6 columns on the front side and the pressure-sensitive blocks 2 in 7 rows and 2 columns ensures that the gaps between rows of the front and back blocks are not aligned, preventing overlap. Therefore, when the pen is rolled up, the gaps on the front are supported by the pressure-sensitive blocks 2 on the back, and the gaps on the back are supported by the touch-sensitive blocks 1 on the front. Consequently, no creases appear on the touchpad after the pen is rolled up. Figure 4 As shown in the side view, after the pen is rolled up, the touchpad is cylindrical, which makes the chip's acquisition and detection response more sensitive.
[0033] As an alternative implementation, each touch sensor block 1 is the same size and shape; each pressure sensor block 2 is the same size and shape, which makes the arrangement of the sensor blocks on the touchpad more regular and facilitates wiring. Both touch sensor blocks 1 and pressure sensor blocks 2 are rectangular. The width of touch sensor block 1 is greater than the width of pressure sensor block 2. The length of touch sensor block 1 is less than the length of pressure sensor block 2. Testing has shown that this configuration results in better touchpad sensitivity.
[0034] As an alternative implementation, the row spacing between each row of touch sensing blocks 1 and the row spacing between each row of pressure sensing blocks 2 is 0.05mm to 0.5mm. This spacing makes the arrangement of the sensing blocks more regular and is beneficial for wiring.
[0035] For example Figure 1 The conventional touchpad shown was subjected to pressure tests, with pressure applied at 300g, 600g, and 900g respectively. The test results are shown in Table 1, where the positive sum represents the sum of positive data for each column of pressure-sensitive blocks 2, indicating the initial value of the original data when pressed. Next, the touchpad provided in this embodiment was subjected to pressure tests, again with pressure applied at 300g, 600g, and 900g. The test results are shown in Table 2. Comparing Table 2 with Table 1, it can be seen that the touchpad of this embodiment has a larger sum of positive numbers and better consistency; the larger the initial value of the original data when pressed, the better the sensitivity. Therefore, the touchpad provided in this embodiment significantly improves pressure sensitivity.
[0036] Table 1. Pressure Test Data for Traditional Touchpads
[0037]
[0038] Table 2. Touchpad pressure test data for this embodiment.
[0039]
[0040] The embodiment is merely a special case and does not indicate that this utility model is implemented in such a way.
[0041] Example 2:
[0042] The difference between this second embodiment and the first embodiment is that: a touch device includes a flexible, crease-free touchpad as described in any of the embodiments in the first embodiment. Alternatively, the touch device can be a stylus. The stylus in this embodiment uses the touchpad provided in the first embodiment, resulting in better sensitivity after curling the stylus.
[0043] The above description is merely a preferred embodiment of the present utility model. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the present utility model. Furthermore, under the teachings of the present utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present utility model.
Claims
1. A bendable creaseless touchpad, characterized by, include: A flexible circuit board; M rows and N columns of touch sensing blocks (1) are arranged on the front side of the flexible circuit board, and A rows and B columns of pressure sensing blocks (2) are arranged on the back side; the row spacing between each row of touch sensing blocks (1) is the same as the row spacing between each row of pressure sensing blocks (2); wherein, M≠A, and the gap between each row of touch sensing blocks (1) and the gap between each row of pressure sensing blocks (2) do not overlap.
2. The bend without crease touchpad according to claim 1, wherein, Thirty touch-sensing blocks (1) are arranged on the front side of the flexible circuit board, and the 30 touch-sensing blocks (1) are arranged in 5 rows and 6 columns.
3. The bend without crease touchpad according to claim 2, wherein, Fourteen pressure-sensitive blocks (2) are provided on the back of the flexible circuit board, and the fourteen pressure-sensitive blocks (2) are arranged in 7 rows and 2 columns.
4. The bend without crease touchpad according to claim 3, wherein, Each of the touch sensing blocks (1) is the same size and shape; each of the pressure sensing blocks (2) is the same size and shape.
5. The bend without crease touchpad according to claim 1, wherein, The row spacing between each row of the touch sensing blocks (1) and the row spacing between each row of the pressure sensing blocks (2) are 0.05mm to 0.5mm.
6. The bend without crease touchpad of claim 1, wherein, The touch sensing block (1) and the pressure sensing block (2) are rectangular in shape.
7. The bend without crease touchpad according to claim 6, wherein, The width of the touch sensing block (1) is greater than the width of the pressure sensing block (2).
8. The bend without crease touch panel according to claim 7, wherein, The length of the touch sensing block (1) is less than the length of the pressure sensing block (2).
9. A touch device, characterized by Includes a crease-free touchpad as described in any one of claims 1-8.
10. A touch device according to claim 9, wherein, The touch device is a stylus.