Flexible circuit board and manufacturing method thereof and display device

Abstract

The invention discloses a flexible circuit board and a manufacturing method thereof and a display device. The flexible circuit board comprises a substrate, at least one conductive structure and a contact resistor group which are arranged on the substrate, packaging layers which are used for packaging the conductive structures and the contact resistor group and a ventilation membrane. The contact resistor group comprises a first contact resistor and a second contact resistor which are used for being electrically connected with the two ends of the conductive structures. The packaging layers andthe substrate form a cavity and a liquid storage region which are mutually communicated. The conductive structures comprise liquid conductive material arranged in the cavity. The liquid storage regionis used for storing the liquid conductive material. The ventilation membrane is used for packaging the liquid storage region and enabling the liquid storage region to be communicated with the external atmospheric pressure. When the flexible circuit board is stretched, the liquid conductive material in the conductive structures flows because of the change of the air pressure so that conduction between the liquid conductive material and the first contact electrode and the second contact electrode can be realized and the flexible circuit board is enabled to be stretchable.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a flexible circuit board, a manufacturing method thereof and a display device. Background technique [0002] With the continuous development of display technology, display screens or touch screens have been widely used in people's lives. Among them, Liquid Crystal Display (LCD) has the characteristics of small size, low power consumption, and no radiation, and occupies an important position in the market. status. Organic Light-Emitting Diode (OLED) has the advantages of self-luminescence, fast response, wide viewing angle, high brightness, bright color, light and thin, etc., and has been widely used in the market. [0003] With the rapid development of display technology, people have higher pursuit of display methods and effects, and more and more users have higher requirements for flexible, stretchable and wearable displays. However, due to the non-stretchability of the tradi...

AI Technical Summary

Problems solved by technology

However, due to the non-stretchability of the traditional flexible printed circuit (FPC), the signal line is prone to breakage during use, which leads to abnormal signal transmission and affects the normal display of the display screen, resulting in poor display. Therefore, the existing technology It is difficult to apply flexible circuit boards in stretchable display devices or wearable devices

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