LED Display Driving IC

As a high-tech product, after more than two decades of market development, LED display can not only effectively convey information for the benefit of the people, but also bring unparalleled audio and visual enjoyment to the audience, and plays a role in people’s daily life. The success of LED display is not accidental, good product reputation is supported by numerous product components behind, such as LED display driving IC which plays an important role on the LED display  quality .

LED display driver chip refers to the driver chip designed specifically for LED display according to the LED light emitting characteristics. The LED display is a current-characteristic device. That is, under the premise of saturation conduction, the brightness of the LED display changes with the change of the current, instead of adjusting the voltage at both ends thereof. Therefore, one of the biggest characteristics of a dedicated chip is to provide a constant current source. The constant current source can ensure the stable driving of the LED and eliminate the flickering phenomenon of the LED. It is a prerequisite for the LED display to display a high-quality picture. The maturity of LED display driver IC technology brings a qualitative leap to the display effect of LED display. With the characteristics of large output current and constant current, the LED display can be applied to various occasions with high current and high image quality. , directly promoting the display form of the LED display and the application of the field towards a more varied direction.

Technology leads the future Helping the industry achieve innovation and high quality

The LED display driver IC is a key component. It is like the central nervous system of the human brain, in charge of the body's physical actions and the mental thinking of the brain. The performance of the driver IC determines the effect of the led display screen broadcast, especially in the application of small-pitch LED display, in order to ensure the user's eye comfort for a long time, the low-light high-gray becomes a test driver IC performance Especially the main standard, making people more stringent requirements for LED display driver IC. As we all know, the development of LED display technology will dominate the future direction of the industry. In recent years, the domestic LED display driver IC technology has also made rapid progress. Small-pitch LED display is an important market for the industry, and it is also the market with higher profitability. First, with the progress of LED display driver IC technology, the resolution of small-pitch LED display screens has been greatly improved, and the pixel center distance of indoor high-density LED display screens has continuously made breakthroughs, and now it has entered the era of 0.X mm. .

At the same time, as terminal display requirements continue to increase, the carrier of display can also be described as new. For example, micro-LED has become the focus of attention in the display industry. Micro-LEDs have high brightness, high efficiency, low power consumption, and ultra-high resolution. Color saturation, long life and other features. Nowadays LED display driver ICs on the market can realize the vision of driving micro-LEDs and make the picture quality more exquisite. The LED display driver IC is used more effectively for the micro-LED ultra-small display display panel space. The high integration function can effectively reduce the number of cloth space and components; In addition, the low-brightness and high-stability in the picture quality performance. Has been the key to dominate the viewing distance and display effect, a single color average constant current drive can be as low as 15uA, the number of gray levels can reach 16bit, so that the display screen contrast and uniformity more delicate, but also to achieve energy-saving low power consumption effect.

New trends: energy saving and integration

From the above we can see, LED display driver IC in the development of LED display screen plays a vital role in promoting, as a green energy, energy saving is the eternal pursuit of LED display, but also consider the driving IC performance of an important standard . During the R&D process, the IC operating voltage and operating current are reduced by optimizing the IC algorithm and design while effectively reducing the constant-current knee voltage and further reducing the conventional 5V power supply to below 3.8V.

In addition, product integration will also become an important trend in the development of LED display driver ICs. With the rapid decline in LED display pixel pitch, the packaging devices to be mounted on a unit area will increase geometrically, greatly increasing the drive surface of the module. The density of components. With so many devices, the available wiring space for PCBs becomes extremely congested, increasing the difficulty of circuit design. At the same time, the arrangement of such crowded components can easily cause problems such as poor soldering and also reduce the reliability of the module. Drive ICs use less, PCBs have larger wiring areas, and the demand from the application side forces the driver ICs to embark on a highly integrated technology path.

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