“Technological innovation is the core element for developing new quality productive forces”. “Patient capital” is a key lever for cultivating new quality productive forces. As the most suitable technological financial tool for technological innovation, venture capital urgently needs path and mechanism innovation guided by new concept. Starting from the logic of patient capital and the essence of technological innovation,this paper takes motivating risk-taking willingness as the logical starting point for building the technology venture capital mechanism, and constructs the concept of “bilateral risk-taking spirit coupling” through theoretical deduction. Then, using this as a specific context for the case study, this study takes five Chinese techventures as research objects, revealing the elements that motivate techentrepreneurs and venture capitalists to actively cooperating. It is found that “intertemporal balance” is the specific realization way of the coupling effect, and is the mechanism of the incentive effect of the venture capital mechanism. The paradigm of venture capital mechanism with “seven characteristics” is constructed to depict the path and system of bilateral risk-taking spirit inspiring technological innovation. This paper analyzes the root causes of technological innovation effect and the specific bilateral equity approach, which provides a theoretical basis for the governance in Chinese techventures and the regulatory orientation of strengthening Patient Capital.