Innovations in LED Backlighting: Achieving Precision LCD Backlight Control in Automotive Displays with Renesas R-Car Gen3 (H3) SiP and IW70X9 LED Driver for Advanced Automotive IC Solutions.
LED backlighting is crucial in automotive display solutions due to its ability to offer superior brightness, energy efficiency, and enhanced visibility under various lighting conditions. It provides higher contrast ratios, ensuring that display content is clear and legible, which is vital for driver safety and user experience. LED backlighting supports a broader color spectrum, allowing for more vivid and accurate color representation, essential for displaying critical information and entertainment content within the vehicle. Its long lifespan and reliability also contribute to reduced maintenance costs and greater overall efficiency.
Unveiling the Future of Automotive Display Technologies
Are you a tech enthusiast hungry for cutting-edge automotive hardware integration? Tenxer Labs has an exciting treat for you! We’ve launched a live demo of the R-Car Gen3 (H3) and IW70X9 LED Driver integration. But wait, there’s more! We’ve taken it up a notch with our state-of-the-art Livebench platform. Get ready to remotely interact with the physical hardware, immersing yourself in precision backlight control like never before.
Overview of the increasing demand for advanced display technologies in automotive applications.
A. Increasing Demand for Advanced Display Technologies in Automotive Applications for Enhanced Automotive Display Solutions.
The automotive industry is witnessing a rapid transformation with the integration of advanced display technologies in vehicles. As automotive displays evolve to meet the demands of enhanced user experiences and safety-critical applications, the role of LED backlighting becomes increasingly pivotal.
Fig: LCD Display Internals
The integration of advanced display technologies in vehicles is driving the automotive industry forward, with LED backlighting being a key component. This blog explores the seamless combination of Renesas’ R-Car Gen3 (H3) System-in-Package (SiP) and the IW7039 LED Backlighting Driver, which offers precise control over LCD backlighting and enables HDR picture quality.
Introduction to the Renesas R-Car Gen3 (H3) System-in-Package (SiP) and its role in automotive display systems.
B. Renesas R-Car Gen3 (H3) System-in-Package (SiP) and its Role in Automotive Display Systems
The Renesas R-Car Gen3 (H3) System-in-Package (SiP) is a high-performance automotive computing solution, featuring exceptional CPU performance, image recognition processing, and ISO 26262 (ASIL-B) compliance. With integrated R-Car SoC, LPDDR4-3200 memory, and HyperFlash memory, it streamlines design processes and facilitates shorter time-to-market for automotive cockpit controllers and makes it an ideal choice for scalable cockpit, infotainment, and automotive display solutions in the automotive industry.
Fig: R-Car H3 Block Diagram
Its integration with clock generators enables scalable cockpit and infotainment solutions supporting high image quality, multiple video display outputs, and a wide variety of memory interfaces, consolidating essential features into a single design. This makes the Renesas R-Car Gen3 (H3) System-in-Package (SiP) a crucial technology for automotive display systems, addressing both technical and commercial demands in the automotive industry.
Brief overview of the IW70X9 LED Driver and its significance in achieving precision backlight control.
C. The IW70X9 LED Driver: Achieving Precision Backlight Control
The IW70X9 LED Driver, developed by Renesas Electronics, is a high-precision, 32-channel LED backlighting driver specifically designed for High Dynamic Range (HDR) displays. This driver combines adaptive DC/DC feedback control with BroadLED™ technology, ensuring optimal efficiency and thermal performance. It supports both analog and digital dimming methods, which enhances the contrast ratio in HDR displays. The driver also incorporates Renesas’ patented AnyMode™ dimming, offering comprehensive, simple, and flexible options to enhance HDR display picture quality. It can drive up to 66mA per channel with high current accuracy, providing a robust solution for backlighting needs.
Fig: IW70X9 Application diagram
Optimizing Backlight Control with IW70X9 and R-Car Gen3
Exploring the seamless integration of R-Car Gen3 (H3) SiP and the IW70X9 LED Driver for automotive displays. The automotive display industry is witnessing a revolution with the integration of the R-Car Gen3 (H3) SiP and the IW70X9 LED Driver. This integration is exemplified in the TenXer CN339 livebench demo, where an LCD screen and an IW7059 LED driver with an LED strip represent the display assembly and light source respectively. The R-Car backlight Full-Array Local Dimming solution, a product of this integration, offers a unique approach to backlight LEDs.
This integration allows continuous PWM signals or very narrow PWM burst signals that are fully synchronized to the video frame at the same or higher frequency. The PWM duty cycle can be updated in each video frame and with user-configurable tail or head delays. This provides more options to reduce motion blur and improve the contrast ratio.
Fig: Local Dimming Solutions Software Block Diagram
It also helps reduce motion blur caused by the Human Visual System (HVS) by generating high-intensity, short-duration PWM pulses. This results in faster fade-out and reduces the physiological afterimage effects of the HVS, which is important for automobile dashboard displays.
System Benefits
- The H3 incorporates four Cortex-A57 cores, four Cortex-A53 cores, and a dual-core lock-step Cortex-R7 for real-time processing.
- The H3 incorporates four Cortex-A57 cores, four Cortex-A53 cores, and a dual-core lock-step Cortex-R7 for real-time processing.
High-performance AC/DC, high-performance DC/DC buck, and low dropout voltage regulator (LDO) devices provide efficient power.
iW7039 is a 32-channel, internal current sink, fault interrupt output, high precision LED driver with a high dynamic range that uses the BoardLED™ digital adaptative switch-mode technology to enable the best system efficiency and thermal performance.
Dynamic LED supply voltage adjustment to minimize power loss.
Highly integrated and efficient system PMIC.
Fig: Tenxer Labs Livebench Platform for evaluating Next-Gen backlight dimming solution
The integration of R-Car Gen3 H3 SalvatorX and the iw7039 LED driver offers several benefits. This innovative solution offers several key advantages.
A. Energy Saving as a key: The integration of R-Car Gen3 H3 SalvatorX and the IW70X9 LED driver offers energy-saving benefits through dynamic dimming of the backlight LEDs. Unlike conventional backlight LEDs that stay on with the same intensity all the time, the livebench solution only activates the necessary LEDs for the video being played, thereby saving energy. This dynamic dimming feature ensures that power is not wasted on unnecessary backlighting.
B. Reduced Thermal Dissipation: The LiveBench solution, which integrates R-Car Gen3 H3 SalvatorX and the IW70X9 LED driver, reduces thermal dissipation. By selectively activating only the relevant backlight LEDs, the solution minimizes heat generation on the board. This improved thermal management can potentially extend the lifespan of the LEDs.
C. Enhanced User Experience: The integration of R-Car Gen3 H3 (SalvatorX) and the IW70X9 LED driver also enhances the user experience by reducing the afterimage effect in the eye. The livebench solution projects light only from the relevant LEDs, minimizing the persistence of vision. This results in a smoother and more visually appealing display.
Fig: Construction of LCD Stack
Unlock Innovation
Harness the Power of Tenxer Labs’ Online Platform to Evaluate the R-Car Gen3 & IW70X9 LED Driver Demo
Be part of the automotive innovation wave by visiting our website. Discover the live demo of the R-Car Gen3 (H3) and IW70X9 integration, unlock the potential of our lab capabilities, and stay ahead of the technological curve. Join Tenxer Labs in shaping the future of precision backlight control and automotive display solutions, and make your mark in the industry.
