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These chipsets are designed to drive and control HD/FHD-class high resolution LCD panels increasingly adopted for instrument panels, side mirrors, navigation, and other vehicle systems. Onboard components include a gamma correction IC, timing controller, source drivers, and gate drivers for driving the panel, along with a power management IC for ensuring optimum drive operation. Conventional LCD panels used in the automotive sector are typically configured using customized components and designs. In contrast, ROHM's new chipsets make is extremely easy to construct high-definition LCD panel modules.
Chipset Configuration
[Construction]
ROHM chipsets are designed to cover a wide range of specifications, making it possible to configure high resolution HD/FHD-class displays. In addition, the timing controller is equipped with a Fail detection circuit for verifying chipset operation.
And the setting for each output in the power management IC can be changed by simply rewriting the internal register value. This reduces development resources considerably while contributing to common board design.
[Chipset Product List]
Device
Function
HD720
(1280×720)
FHD Class
(1920×720)
FHD1080
(1920×1080)
3K Class
(2880×1080)
Part No.
Qty.
Part No.
Qty.
Part No.
Qty.
Part No.
Qty.
Timing
Controller
LCD
driver
control
Support FHD LVDS / mini-LVDS Interface LCD Timing Controller for Automotive BU90AL211-M
■ Description
LCD Panel Timing Controller for Automotive
■ Features
Support WUXGA/FHD Class Resolution
Horizontal active is up to 1920 pixels
Vertical active is up to 1280 lines
Flexible LVDS Input / mini-LVDS Output mode
Single-in / Single-out (3pair)
Single-in / Single-out (6pair)
Dual-in / Single-out (6pair)
Dual-in / Dual-out (3pair)
Support 2 Type LVDS Data mapping (VESA/JEIDA)
Support (1-port 6-pair) / (1/2-port 3-pair) mini-LVDS Output
Support mini-LVDS Output Skew Control (T/16 step)
Support Internal LDO: 1.5V Output
Support Fail-Safe Function (DE, LVDS CLK)
Support SSCG (Spread Spectrum Clock Generator)
Support 16Kbit External EEPROM
Support AGING Function
Support Programmable Driver Control Timing
Support Up & Down Gate Driver Scan
Support Left & Right Direction Data Mapping
Support Gamma Correction and Dithering
Support Data Inversion
Support Blanking Gray Insertion
Support I2C Master/Slave Function
Support SPI Slave Function
Support Start Pulse Return Detection
Support CRC Function
Support OSD (On-Screen Display) Function
AEC-Q100 Qualified
1
1
Support 3K LVDS / mini-LVDS Interface LCD Timing Controller for Automotive BU90AL210-M
■ Description
LCD Panel Timing Controller for Automotive
■ Features
Support WUXGA/FHD Class Resolution
Horizontal active is up to 3880 pixels
Vertical active is up to 1280 lines
Flexible LVDS Input / mini-LVDS Output mode
Single-in / Single-out (3pair)
Single-in / Single-out (6pair)
Dual-in / Single-out (6pair)
Dual-in / Dual-out (3pair)
Dual-in / Dual-out (6pair)
Support 2 Type LVDS Data mapping (VESA/JEIDA)
Support 2 Type LVDS Dual mode (Odd/Even, Left/Right)
Support (1/2-port 6-pair) / (1/2-port 3-pair) mini-LVDS Output
Support mini-LVDS Output Skew Control (T/16 step)
Support Internal LDO: 1.5V Output
Support Fail-Safe Function (DE, LVDS CLK)
Support SSCG (Spread Spectrum Clock Generator)
Support 16Kbit External EEPROM
Support AGING Function
Support Programmable Driver Control Timing
Support Up & Down Gate Driver Scan
Support Left & Right Direction Data Mapping
Support Gamma Correction and Dithering
Support Data Inversion
Support Blanking Gray Insertion
Support I2C Master/Slave Function
Support SPI Master/Slave Function
Support Start Pulse Return Detection
Support CRC Function
Support OSD (On-Screen Display) Function
AEC-Q100 Qualified
1
1
Source
Driver
LCD
panel
drive
(1440ch)
TFT 1440 outputs source driver ML9882
■ General Description
ML9882 is the source driver for TFT LCD panel that can switch 1440/1284/1278/1260/1200/1080/1026/1020ch output.
This driver outputs voltages of 256 gray-scale levels (8-bit) to the RGB pixels. It covers a wide output voltage range (dynamic range) from 7.6V to 14.2V.
For the 8×3 (RGB) bits signal transmission, the EMI level can be reduced by adopting RSDS and mini-LVDS interface.
■ Features
Source driver for TFT LCD
Power supply voltage for logic (VCC): 2.7 to 3.6V
Power supply voltegae for driver output (VLS): 8.0 to 14.6V
Driver's output voltage range: 0.2V to VLS-0.2V
Input levels of gray scale: 256 levels of gray scale (8-bit)
Gamma reference power supply voltage level: 18 levels (9 levels×2)
High voltage function: LCD control signal is available VCOM-VEE≦40V maximum
Maximum operating frequency: 200 kHz
Include bidirectional shift function
Power On Reset function
Au bump chip* for COG
(*: Please shield chip against the light)
For automotive TFT panel
2
(540ch)
2
PMIC
Multi-
function
power
supply IC
Automotive Panel Power Management IC BM81810MUV-M
■ Description
BM81810MUV-M is a power management IC for TFT-LCD panels which are used in car navigation, in-vehicle center panel, and instrument cluster.
This IC incorporates VCOM amplifier, Gate Pulse Modulation (GPM) in addition to the power supply for panel driver (SOURCE, GATE, and LOGIC power supplies). Moreover, this IC has a built-in EEPROM for sequence and output voltage setting retention.
■ Features
AEC-Q100 Qualified
Protection circuits
Under-Voltage Lockout
Thermal Shut Down
Over-Current Protection
Over-Voltage Protection
Under Voltage Protection (Timer Latch type)
Alternative Synchronous Buck DC/DC converter or LDO for VDD output
Synchronous Boost DC/DC converter for AVDD output with integrated load switch.
VCOM amplifier with 7bit calibrator
Positive charge pump (Integrated diode, x2/x3) for VGH output
Negative charge pump for VGL output
VGH and VCOM temperature compensation
Gate Pulse Modulation (GPM)
I2C Interface Output Voltage Setting Control Function
(Integrated EEPROM)
Switching frequency switching function
(525KHz, 1.05MHz, 2.1MHz)
Input tolerant (SCL, SDA, EN, WPN)
1
1
1
1
Gamma
Correction
IC
Image
correction
BD81849MUV
1
BD81849MUV
1
BD81849MUV
1
BD81849MUV
1
Features:Supporting functional safety
Each IC integrated in the chipset includes a function for mutually detecting the expected failure mode.
As a result, it is possible to complementarily detect panel failure and confirm and provide feedback on information such as input signals to the LCD along with peeling/destruction of the LCD driver.
Supporting functional safety contributes to the prevention of serious accidents caused by the malfunction of monitors for the speedometer, side mirrors, and other systems.
Examples of LCD Failure Detection by Chipset Functional Safety
LCD Failure
Mode
Black Screen
Freeze/Burn-In
Display Delay
Abnormality
Occurrence
Location
Expected
IC Error
Based on
Abnormality
Occurrence
PMIC
①Shutdown
-
-
Timing
Controller
②LVDS signal error
③Internal register fault
⑦LVDS signal error
-
Source
Driver
④Input voltage error
← PMIC detected
⑤No input signal
← T-CON detected
⑥Fixed output Low
In addition to chipsets for high resolution automotive panels, ROHM will continue to leverage the latest proprietary technologies and expertise to expand its industry-leading product lineup and develop solutions that meet customer needs.
For Automotive Applications Chipsets for High-Resolution LCD Panels
Overview
These chipsets are designed to drive and control HD/FHD-class high resolution LCD panels increasingly adopted for instrument panels, side mirrors, navigation, and other vehicle systems. Onboard components include a gamma correction IC, timing controller, source drivers, and gate drivers for driving the panel, along with a power management IC for ensuring optimum drive operation. Conventional LCD panels used in the automotive sector are typically configured using customized components and designs. In contrast, ROHM's new chipsets make is extremely easy to construct high-definition LCD panel modules.
Chipset Configuration
[Construction]
ROHM chipsets are designed to cover a wide range of specifications, making it possible to configure high resolution HD/FHD-class displays. In addition, the timing controller is equipped with a Fail detection circuit for verifying chipset operation.
And the setting for each output in the power management IC can be changed by simply rewriting the internal register value. This reduces development resources considerably while contributing to common board design.
(1280×720)
(1920×720)
(1920×1080)
(2880×1080)
Controller
driver
control
Support FHD LVDS / mini-LVDS Interface LCD Timing Controller for Automotive BU90AL211-M
■ Description
LCD Panel Timing Controller for Automotive
■ Features
Support 3K LVDS / mini-LVDS Interface LCD Timing Controller for Automotive BU90AL210-M
■ Description
LCD Panel Timing Controller for Automotive
■ Features
Driver
panel
drive
TFT 1440 outputs source driver ML9882
■ General Description
ML9882 is the source driver for TFT LCD panel that can switch 1440/1284/1278/1260/1200/1080/1026/1020ch output.
This driver outputs voltages of 256 gray-scale levels (8-bit) to the RGB pixels. It covers a wide output voltage range (dynamic range) from 7.6V to 14.2V.
For the 8×3 (RGB) bits signal transmission, the EMI level can be reduced by adopting RSDS and mini-LVDS interface.
■ Features
Clock frequency: fmax=85MHz
Clock frequency: fmax=300MHz
(Note: Please shield chip against the light because it has no light resistance design)
Driver
panel
drive
960 Output TFT Gate driver ML9873
■ General Description
ML9873 is a 2 level output gate driver for TFT LCD panels with 960/800/768/720/684/682/640/600/540/512 channel outputs.
■ Features
(*: Please shield chip against the light)
540 Output TFT Gate driver ML9872
■ General Description
ML9872 is a 2 level output gate driver for TFT LCD panels which is used to implement VGA, WVGA, QHD ,etc resolutions.
■ Features
(*: Please shield chip against the light)
function
power
supply IC
Automotive Panel Power Management IC BM81810MUV-M
■ Description
BM81810MUV-M is a power management IC for TFT-LCD panels which are used in car navigation, in-vehicle center panel, and instrument cluster.
This IC incorporates VCOM amplifier, Gate Pulse Modulation (GPM) in addition to the power supply for panel driver (SOURCE, GATE, and LOGIC power supplies). Moreover, this IC has a built-in EEPROM for sequence and output voltage setting retention.
■ Features
(Integrated EEPROM)
(525KHz, 1.05MHz, 2.1MHz)
Correction
IC
correction
Features:Supporting functional safety
Each IC integrated in the chipset includes a function for mutually detecting the expected failure mode.
As a result, it is possible to complementarily detect panel failure and confirm and provide feedback on information such as input signals to the LCD along with peeling/destruction of the LCD driver.
Supporting functional safety contributes to the prevention of serious accidents caused by the malfunction of monitors for the speedometer, side mirrors, and other systems.
Mode
Occurrence
Location
IC Error
Based on
Abnormality
Occurrence
Controller
③Internal register fault
Driver
← PMIC detected
⑤No input signal
← T-CON detected
⑥Fixed output Low
Driver
← T-CON detected
← PMIC detected
Related Information
■ Latest News
ROHM's Chipsets for High Resolution Automotive Panels
■ New Product Bulletin
Chipsets for High Resolution Automotive Panels (PDF:304KB)
In addition to chipsets for high resolution automotive panels, ROHM will continue to leverage the latest proprietary technologies and expertise to expand its industry-leading product lineup and develop solutions that meet customer needs.
Latest News