Touch panels, bonding structures and flexible printed circuit boards
A flexible circuit board and touch panel technology, which is used in electrical digital data processing, instruments, computing, etc., can solve the problems of difficult to know the conduction state of the sensing substrate and the flexible circuit board, and difficult to observe the cracking situation. , to achieve a simple and intuitive method, avoid sample loss, and save costs.
Active Publication Date: 2018-07-06
INTERFACE OPTOELECTRONICS SHENZHEN +1
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However, since these pins are made of opaque conductive metal materials, it is difficult to observe the cracking of the conductive particles in the anisotropic conductive film after the sensing substrate and the flexible circuit board are bonded, so it is not easy to obtain Sensing the conduction state of the substrate and the flexible circuit board
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[0020] Please also refer to figure 1 and figure 2 , figure 1 It is a schematic structural diagram of a touch panel provided by a preferred embodiment of the present invention. figure 2 for figure 1 Partial enlarged view of area II in the middle touch panel. The touch panel 1 can be applied to touch display devices, such as smart phones, tablet computers, game consoles or electronic dictionaries. The touch panel 1 includes a sensing substrate 11, a flexible circuit board (FPC) 12, an anisotropic conductive film 13 (ACF, see image 3 ) and touch drive circuit 14.
[0021] The sensing substrate 11 includes a sensing structure 111 for sensing user's touch information, the sensing substrate 11 defines a touch area 110a and a frame area 110b, the touch area 110a is a touch display area, and the frame area 110b surrounds the touch area 110a. The frame area 110b further defines a bonding area B, and a group of first pins 1121 arranged in parallel are disposed in the bonding a...
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The invention relates to a touch panel. The touch panel is provided with a group of first pins in the bonding area; a flexible circuit board including a group of second pins; With the anisotropic conductive film between the group of second pins, the gap between two adjacent first pins defines a group of first blank gaps, and the gap between two adjacent second pins defines a group of second blank spaces Gaps, in one of the group of first blank gaps and the group of second blank gaps, there is at least one blank gap whose width is greater than the width of other blank gaps, and the group of first pins and the group of second pins At least one pin in one group corresponds to the wider blank space setting. When the present invention conducts electrical testing on the touch panel, the cracking condition of the conductive particles below it can be observed through the wide blank gap to confirm the bonding condition.
Description
technical field [0001] The invention relates to a touch panel, a bonding structure and a flexible circuit board. Background technique [0002] The touch panel generally includes a sensing substrate for sensing user touch information, a flexible printed circuit board (Flexible Printed Circuit Board, FPC) for transmitting the touch information to the control device, and an interface for connecting the sensing substrate to the control device. The Anisotropic Conductive Film (ACF) is an anisotropic conductive film (ACF) that electrically connects the pins to the pins of the flexible circuit board. However, since these pins are made of opaque conductive metal materials, it is difficult to observe the cracking of the conductive particles in the anisotropic conductive film after the sensing substrate and the flexible circuit board are bonded, so it is not easy to obtain Know the conduction state of the sensing substrate and the flexible circuit board. Contents of the invention ...
Claims
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IPC IPC(8): G06F3/041
Inventor 武刚
Owner INTERFACE OPTOELECTRONICS SHENZHEN