Touch button circuit capable of being pasted
By setting touch chips and buttons on a flexible printed circuit board and combining them with IIC communication pins, the problems of complex and short-circuit leakage in existing touch button circuits are solved, achieving simplified design and convenient button placement, and improving circuit reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2026-03-06
AI Technical Summary
Existing touch button circuit designs are complex and prone to short circuits and leakage, and the button positions are inconvenient to move.
The touch chip and four touch buttons are connected to a flexible printed circuit board and attached to the required positions with adhesive. They are connected using IIC communication pins, which simplifies the circuit design and avoids interference from ribbon cables.
It simplifies circuit design, makes button position movement convenient and avoids cable interference, thus improving circuit reliability and convenience.
Smart Images
Figure CN223978638U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of button design, specifically to a removable touch button circuit. Background Technology
[0002] Existing touch buttons have complex circuit designs, and are prone to short circuits and leakage after aging. Utility Model Content
[0003] The objective of this utility model is achieved through the following technical solution.
[0004] Specifically, this utility model provides an adhesive touch button circuit, including:
[0005] Touch chip, four touch buttons;
[0006] The four touch buttons are connected one-to-one with the pins of the touch chip;
[0007] Furthermore, the touch chip and touch buttons are both mounted on a flexible printed circuit board.
[0008] Furthermore, the touch chip is a capacitive screen control chip that supports touch buttons.
[0009] Furthermore, the surface or bottom layer of the touch button is attached to the flexible printed circuit board with adhesive.
[0010] Furthermore, the attachable touch button circuit further includes an IIC communication pin, which is connected to the touch chip.
[0011] The advantages of this utility model are: the adhesive touch button circuit designed in this utility model has a simple circuit design, and the position of the touch button is easy to move, and the ribbon cables do not interfere with each other. Attached Figure Description
[0012] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:
[0013] Appendix Figure 1 A circuit diagram of a removable touch button circuit according to an embodiment of the present invention is shown. Detailed Implementation
[0014] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
[0015] like Figure 1 As shown, according to an embodiment of this utility model, a removable touch button circuit is proposed, comprising: a touch chip and four touch buttons; the four touch buttons are respectively connected to the pins of the touch chip; the touch chip and the touch buttons are both disposed on a flexible printed circuit board.
[0016] like Figure 1 As shown, this utility model mainly comprises three parts: a touch chip U1, touch buttons Key1, Key2, Key3, and Key4, and an interface J1. It adopts a COF (Chip On Flex, or Chip On Film) structure, commonly known as flip-chip film, which is a chip-on-film packaging technology that fixes integrated circuits (ICs) on a flexible circuit board. All components are located on an FPC (Flexible Printed Circuit). The connection lines between buttons Key1, Key2, Key3, and Key4 and the touch chip are divided into groups to facilitate bending of the cables and movement of the touch buttons.
[0017] The touch chip U1 can be a Tango C32 / Tango C44 / Tango C48 or other capacitive screen control chip that supports touch buttons (because the main feature of this invention is that the buttons can be attached).
[0018] Pins T0-T47 are the scanning channels for the capacitive touch chip.
[0019] VCC is the power supply, GND is the ground, SDA is the IIC data input / output, SCL is the IIC clock input, ATTB and AUX are bidirectional GPIO ports, RST is the reset (active high), and CT is an optional capacitor.
[0020] J1 is the pin for IIC communication.
[0021] The surface or bottom layer of the touch button is bonded with a thin film of uniform thickness, which can be directly attached to the location where touch is required.
[0022] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A touchable key circuit, characterized by, The application relates to a touchable key circuit, which comprises a touchable chip and four touchable keys. The four touchable keys are connected with the pins of the touchable chip one by one. The touchable chip and the touchable keys are arranged on a flexible printed circuit board. The touchable chip is a capacitive screen control chip supporting the touchable keys. The surface layer or the bottom layer of the touchable key is pasted on the flexible printed circuit board through adhesive. The touchable key circuit further comprises IIC communication pins connected with the touchable chip.