A mini-led backlight light source control system and TV

Abstract

The invention discloses a Mini-LED backlight light source control system and a TV set. The Mini-LED backlight light source control system is connected to a display screen and includes a power supply board, a main board, a control board, a logic board and a plurality of lamp boards. The light-emitting module, the control board is provided with a scan switching module and a signal enhancement module; the power supply board outputs a voltage signal to the scan switching module, the main board outputs a low-voltage differential signal to the logic board, and outputs an SPI signal to the signal enhancement module; the signal enhancement module outputs the enabling signal to the scanning switching module, and outputs the enhanced SPI signal to the lamp board; the scanning switching module dynamically scans and lights up the lamp according to the enabling signal and the voltage signal board; the logic board decodes the low-voltage differential classification signal and drives the display screen to display image images; the present invention can ensure the integrity of data transmission by setting a signal enhancement module.

Description

technical field [0001] The invention relates to the technical field of LED light sources, in particular to a Mini-LED backlight light source control system and a television set. Background technique [0002] At present, some TV products use Mini-LED as the backlight display. Mini-LED adopts the direct type and small spacing design of lamp beads, and realizes regional dimming in a smaller range through a large number of dense distribution. Compared with the traditional backlight design, It can have better brightness uniformity and higher color contrast within a smaller light mixing distance, which can realize the ultra-thin design of end products and save power. [0003] The existing Mini-LED backlight control technology adopts the traditional one-to-one control method, that is, each control lamp area corresponds to a control channel of a constant current driver chip. When the number of partitions reaches more than a thousand, the number of constant current control chips is ...

AI Technical Summary

Problems solved by technology

The number of screen partitions increases, and the corresponding SPI (Serial Peripheral Interface: Serial Peripheral Interface) data transmission volume is large, the speed is high, and the transmission line is long, which makes the SPI data transmission process susceptible to interference, resulting in abnormalities such as backlight flickering or screen darkness. question

Images