Utilizing light as a data-transmission carrier, VLC possesses the advantages of a broad frequency range, high data rate, greater security, higher energy efficiency [23], and lack of radio frequency (RF) interferences. Due to the limited bandwidth and the crowded communication window of existing RF and microwave wireless communication technologies, a great deal of effort has been made to prove that VLC has an enormous potential to fulfill the surging demand for the informatization exchange of modern society. Commonly, the conventional white-light LEDs used for SSL consist of the blue light from a broad-area LED and the yellow light from YAG:Ce3+ phosphor. Nevertheless, the YAG:Ce3+ phosphor suffers from long photoluminescence (PL) lifetime and low modulation bandwidth (less than 20 MHz), showing limited capability for VLC [24; 25]. With the peculiarities of high PL quantum yield, short PL lifetime, and narrow emission bandwidth, perovskite quantum dots (PQDs) present an appealing opportunity in next-generation lighting sources for both illumination and communication [26; 27; 28; 29; 30; 31]. [PERSON] et al. utilized LDs to excite CsPbBr3 perovskite nanocrystals and a conventional red phosphor to generate the white light for VLC [32]. [PERSON] et al. synthesized the CsPbBr3 liquid perovskite quantum dots which were applied in an LD-based white-light VLC system [33]. The maximum transmitted data rates at a receivable bit error rate (BER) of two systems were up to 2 Gbps and 1 Gbps, respectively [32; 33]. The LD-based VLC systems have outstanding performances in wireless communication, but are poor in the SSL field owing to problems such as limited etendue, detriment to human eyes, and speckle noise [34]. Therefore, light sources (such as LED) that are more acceptable for human eyes and the environment in the long term are desired. In contrast to broad-area LED, \(\upmu\)LEDs with a feature size of tens of micrometers enjoy excellent intrinsic properties such as larger current saturation density and higher modulation bandwidth [19; 35; 36], revealing their enormous potential in both VLC and SSL fields. [PERSON] et al. set up a VLC system based on a CsPb4 Br6 matrix with CsPbBr3 QDs and an InGaN \(\upmu\)LED, with a corresponding modulation bandwidth of up to 24.6 MHz [37]. In our previous report, a high-bandwidth white-light system was proposed which consisted of yellow-emitting CsPbBr18112 perovskite quantum dots and a blue GaN-based \(\upmu\)LED. The system has presented a high bandwidth of up to 85 MHz and a maximum data rate of 300 Mbps [38]. Although some progress has been made in WL-VLC, there is a trade-off between illumination performance and communication capacity, so it is important to balance high-quality lighting and high-speed communication. Therefore, many efforts need to be made to pursue high-quality white-light systems that can simultaneously implement high-quality SSL and high-capacity VLC dual-function applications. Several types of color converters have been explored for use as color-conversion layers to generate high-quality white light while maintaining high-bandwidth communication performance. Hence, in this paper, green PQDs (G-PQDs) and red PQDs (R-PQDs) are employed as color converters, which are excited by blue InGaN-\(\upmu\)LEDs to produce the white light for SSL and VLC. The characteristics of monochromatic light (red/green) from G-PQDs and R-PQDs are studied to obtain high-quality illumination while maintaining high modulation bandwidth. The SSL properties and VLC performances of the obtained white-light system are further investigated in detail. In this study, the maximum \(-3\) dB modulation bandwidths of monochromatic light and white light were up to \(\sim\)64 MHz (green-light), \(\sim\)90 MHz (red-light), and 57.5 MHz (white-light), respectively. Moreover, the white light generated by blue InGaN-\(\upmu\)LEDs, G-PQDs, and R-PQDs possessed a Commission Internationale de L'Eclairage (CIE) of (0.3327, 0.3114) and the color temperature of 5474 K.