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The Industry’s First Automotive Chipsets That Support Functional Safety in A much higher resolution Displays

Expanded lineup that will work with functional security measures for speedometers, side mirrors, along with other vehicle systems

ROHM and LAPIS Semiconductor have announced the available appointments of chipsets intended to drive and control automotive LCDs, including larger full resolution monitors for navigation as well as instrument cluster.

In the past few years the adoption of LCDs in vehicles to your instrument cluster, navigation, electronic mirrors, along with systems has risen significantly, although the growing quantity of applications has grown the need for larger, higher resolution displays. To realize these needs, it is vital to extend how many driver and controller channels. However, this will make system configuration and operation verification more and more difficult, strengthening the consideration in chipset solutions. Also, in applications including electronic mirrors where malfunctions may result in serious accidents functional safety is required.

ROHM’s new chipsets integrate a gamma correction IC, timing controller (T-CON), source driver, and gate driver for driving HD/FHD class displays (the greatest resolution currently in the marketplace), in addition to a power management IC (PMIC) to ensure optimum drive operation. Each IC is made to share information as required, achieving automotive-grade reliability and supporting functional safety in devices of displays somebody in charge of.

In addition, chipset optimization allowed ROHM to cover a wide range of specifications yet still time integrate a Fail detection function in the timing controller to be sure of operation, to be able to configure high definition LCD panels.

Key Features

  1. The planet’s first automotive chipsets that support functional safety in LCDs

Each IC configured in the chipset integrates a function for mutually choosing the expected failure mode. Consequently, you can complementarily detect panel failure and ensure and provides feedback on information like input signals towards the LCD along with peeling/destruction with the LCD driver. Supporting functional safety increases the prevention of serious accidents because of the malfunction of monitors with the speedometer, side mirrors, and other systems.

For example, power may not discover that the screen with the side mirrors has frozen in the event that no object is detected at the time, presenting a danger which will result in serious injury if someone suddenly were to go behind the vehicle as you move the car is moving. In order to avoid this ROHM delivers functional safety that could detect when the screen is frozen.

The power management IC incorporates a double register for detecting abnormalities and auto-refresh function help recovery during abnormal operation, ensuring high reliability against unexpected influences for instance noise.

  1. Easily configure HD/FHD class high quality LCDs

ROHM chipsets are made to cover numerous specifications, making it possible to easily configure high res HD/FHD class LCDs.

Comprehensive design support provided, including application boardsIn addition, the timing controller offers a Fail detection circuit for verifying chipset operation. Along with the setting of the output while in the power management IC might be changed through rewriting the internal register value. This reduces development resources while causing common board designs.

ROHM is presently preparing manuals, reference designs, and application boards that facilitate chipset evaluation. Please e mail us to read more.

Terminology

Resolution Equivalent Panel Size
WVGA 800 x 480 7-8 in and smaller
HD 1280 x 720 (800) 7-8 in and smaller
FHD 1920 x 1080 (1200) 7-8 to 10 in and larger
WQXGA 2880 x 1280

2560 x 1600

10 in and larger

HD / FHD (Hi-def resolution / Full Hi-d)

Both HD and FHD reference video resolution. HD is 1280 720 pixels, while FHD is equivalent to 1920 1080 pixels.

Functional Safety

Functional safety includes safety precautions (concepts for ensuring safety) that minimize risk by having functionality which include monitoring and protective clothing. From the automotive market, functional safety minimizes risk in an acceptable level in order to avoid bodily injury in case there is malfunction due electronic system failure. You can find even a global standard for automotive functional safety (ISO26262).

Meanwhile, protection functions frequently known as in ICs are functions that ensure the safety from the IC itself by monitoring for internal malfunctions and damage.