TWM382521U - Test apparatus for touch panel - Google Patents

Description

M382521 V. New Description: [New Technology Field] [0001] This creation is related to a test device for a touch panel, and particularly refers to a test device for a capacitive touch panel. [Prior Art]

[0002] The development of science and technology makes electronic products more important than the characteristics of their own products, but also emphasizes the convenience of human-computer interaction. Therefore, many touch products and interfaces have been introduced, such as ATMs, Personal Digital Assistants (PDAs), mobile phones or notebook computers. The touch-sensitive products enable direct interaction between the user and the electronic product by means of the user's proximity or direct pressing of the touch panel to complete the transmission, access and update of the data, and increase the input. Efficiency.

[0003] Touch panels are distinguished by a variety of styles, including sonic, resistive, capacitive, and optical touch panels, depending on their operating principles. Among them, the capacitive touch panel has a feature of being scraped and has a fast response speed, so it is widely used. Referring to the first figure, the structure of the capacitive touch panel is formed by plating an ITO (Indium tin-oxide) layer 12, 13 on the upper and lower sides of a glass substrate 11, and the lower layer of the IT0 layer 12 is a shielding function for providing touch. The panel is operated in a noise-free environment, and the upper layer of the ITO layer 13 is used to establish a uniform electric field on the glass substrate 11, and then a metal electrode (not shown) is formed on the substrate; finally, a cerium oxide is covered. A hard coat 14 is applied, and a functional layer 15 (for example, to prevent reflection or glare) may be added as needed. Form No. A0101 Page 3 of 11 M382521 [0004] The principle of the capacitive touch panel is to use a medium touch panel to cause a change in the capacitance of the electrodes of the panel, thereby generating a weak current, thereby detecting the contact point. Coordinate position. The I TO layer 13 on the upper layer of the substrate 11 forms a plurality of diamond patterns, which mainly represent channels in the X-axis direction when touched, and the metal electrode layer mainly represents channels in the Y-axis direction; The controller of the touch panel (not shown) will sequentially detect the change in capacitance of each area on the panel, and find the coordinate position of the contact point. [0005] The touch panels are subjected to a layer test level during the manufacturing process. According to the traditional techniques used in these capacitive touch panels, the human body is usually in direct contact with the finger and the final functional test of the product is performed. However, the difference in test results due to differences in the skin's personal moisture content or the state of injury may not cause the tests to be quantified, and the test results may be inaccurate. [New Content] [0006] Accordingly, the present invention proposes a test device for a touch panel, which aims to provide a quantifiable test device that simulates and quantifies the capacitance value and resistance value of a human body, and thus is not thereby Affected by differences in human conditions. [0007] The test device of the present invention comprises a contact portion, an analog capacitor and an analog resistor, and the three electrical connections are electrically connected to a common voltage of a touch panel; when the contact portion touches the touch panel When touched, the contact portion, the analog capacitor, the analog resistor and the touch panel form an electrical loop. [Embodiment] Form No. A0101 Page 4 of 11 [0008] M382521 [0009]

[0011] The following description and examples are provided to explain the details of the present invention. However, those skilled in the art should readily appreciate that the embodiments described herein are susceptible to variations and modifications. Therefore, the embodiments of the afterload are not intended to limit the scope of protection of the present invention. Please refer to the second figure, which shows a schematic diagram of the use of the test device of the touch panel of the present invention, which includes a contact portion 21, an analog capacitor 23, and an analog resistor 24; the contact portion 21 and the analog capacitor 23 and the simulation The resistors 24 are electrically connected, and the three are electrically connected in series and connected to a common voltage Ve()M of the touch panel 20; the common voltage Vm/ is a low level voltage, such as a ground terminal. The analog capacitor 23 and the analog resistor 24 are used to simulate the general capacitance value and the electrical ancestor value of the human body, and the contact portion 21 is used to simulate a human finger. When the contact portion 226 is in contact with the touch panel 20, the contact portion 21, the analog capacitor 23, and the analog resistor 24 form an electrical circuit with the touch panel 20, and thus the touch panel 20 is tested. Regarding the material of the contact portion 21, since electrical conductivity is considered, an electrically conductive material such as copper may be optionally used, but not limited thereto. Regarding the size of the contact portion 21, the diamond pattern of the ITO layer on the upper layer of the substrate represents the X-axis direction at the time of contact, and the X-direction dimension of the diamond pattern is about 6 to 8 mm, so that a cylinder having a diameter of approximately 6 to 8 mm can be selected. But it is not limited to this. In addition, the present invention may include a grip portion 22 to establish ease of use and grip, but does not constitute a limitation of the present creation. The contact portion 21 is disposed at one end of the grip portion 22 and electrically connected in series with the analog capacitor 23 via a wire 25 inside the grip portion 22. To avoid the additional resistance value and capacitance value of the grip portion 22, the grip portion 22 can be selected from any insulating material. Generally, the capacitance value of a human finger is about 〇.5pF to 2pF, and the dot form number A0101 is 5th/11th M382521 The capacitance pen is between 20pF and lOOpF, so the selection of the analog capacitor 23 of the present invention can be selected. It is considered to cover the upper and lower limits of the above capacitance values, for example, 0. 2pF to 5600pF, but not limited thereto. Furthermore, considering the resistance value of the human body, the resistance value is quite different depending on the environment and the degree of dryness and wetness of the human body. For example, in a dry environment, the body's resistance is about 2kD; in the case of sweating, the resistance can be reduced to about lkQ. Therefore, the analog resistor 24 of the present invention can be selected to cover the upper and lower limits of the possible resistance values, for example, 0 to 20 k Ω, but not limited thereto. [0012] The relevant test collation of the present creation is as shown in the first table below. [0013] The first table [0014] contact portion (cylinder analog capacitance value analog resistance value effective contact body) diameter 6mm 100pf 0-20k is 7mm 0. 5pf 0-20k is lpf 0-20k 2pf 0-20k lOpf 0-20k Is lOOpf 0-20k is 8mm 0. 5pf 0-20k is lpf 0-20k is 2pf 0-20k is lOpf 0-20k is lOOpf 0-20k is based on the above table, this creation uses three different contact 21 size, ie The contact portion 21 is a diameter of a cylinder including 6 mm, 7 mm, and 8 mm. Form number A0101

Page 6 of 11 M382521 The input of the analog capacitor 23 and the analog resistor 24 established in the first table are valid contacts. The term "effective contact" means that when the touch panel is touched by the test device of the present invention, the coordinate position of the contact point can be detected for the panel.

[0015] The test device of the present invention comprises a contact portion, an analog capacitor and an analog resistor. The three are electrically connected in series and electrically connected to a common voltage of a touch panel; when the contact portion touches the touch panel The contact portion, the analog capacitor, the analog resistor and the touch panel form an electrical loop; thereby providing a quantifiable test device for simulating and quantifying the capacitance value and the resistance value of the human body, thereby being free from differences in human conditions influences.

[0016] For those skilled in the art to which the present invention pertains, and subject to the foregoing description and the teachings of the related drawings, various substantially equivalent changes and other specifics of the present invention may be derived without departing from the spirit and scope of the present invention. Example. Therefore, the present invention is not limited to the specific embodiments disclosed above, and such substantially equivalent changes and other specific embodiments are included in the scope of the patent application. BRIEF DESCRIPTION OF THE DRAWINGS [0017] In order to facilitate the understanding of the foregoing and other objects, features, advantages and embodiments of the present invention, the detailed description of the drawings is as follows: [0018] The first figure is a conventional capacitive touch The laminated structure of the control panel; and [0019] The second drawing is a schematic diagram of the use of the creation. [Description of main component symbols] [0020] 11.....glass substrate 12,13.....ITO layer form number A0101 Page 7 of 11 M382521 14 ..... hardening layer 15 .. ...functional layer 20 ..... touch panel 21 ..... contact portion 22 ..... grip portion 23 ..... analog capacitor 24 ..... analog resistor 25 .. ...wire form number A0101 Page 8 of 11

Claims (1)

M382521 VI. Patent application scope: 1. A test device for a touch panel, comprising: a contact portion, an analog capacitor, and an analog resistor; wherein the contact portion is electrically connected to the analog capacitor, and the analog resistor is connected in series; When the contact portion touches a touch panel, the contact portion, the analog capacitor, and the analog resistor form an electrical circuit with the touch panel, thereby achieving the test of the touch panel. 2. The test device for the touch panel described in claim 1 of the patent application, further includes The contact portion is disposed at one end of the grip portion and electrically connected to the analog capacitor through a wire inside the grip portion. 3. The test device for a touch panel according to claim 1, wherein the contact portion is a cylinder. 4. The test device for a touch panel according to claim 3, wherein the cylinder has a diameter of between 6 mm and 8 mm. 5. The test device of the touch panel of claim 1, wherein the analog capacitance value is between 0.5 pf and 100 pf. 6. The touch panel test apparatus of claim 1, wherein the analog resistance value is no more than 20 ΙίΩ. 0993067641-0 099201526 Form number Α0101 Page 9 of 11