tft lcd meter cluster quotation

There are other tft instrument clusters on the market, such as a custom Tft instrument cluster. In addition, the installation of a Tft panel cluster is small and easier to build the instrument as its own suggests. There are several types of Tft instrument clusters, including solar panel clusters, dash gauge cluster, and dashboard clusters.

Explore more products, find out more about them. On Alibaba.com, you can find different tft instrument clusters that are suitable for different vehicles and the tftometer modes.

The traditional mechanical instrument lacks the ability to satisfy the market with characters of favorable compatibility, easy upgrading, and fashion. Thus the design of a TFT-LCD (thin film transistor-liquid crystal display) based automobile instrument is carried out. With a 7-inch TFT-LCD and the 32-bit microcontroller MB91F599, the instrument could process various information generated by other electronic control units (ECUs) of a vehicle and display valuable driving parameters on the 7-inch TFT-LCD. The function of aided parking is also provided by the instrument. Basic principles to be obeyed in circuits designing under on-board environment are first pointed out. Then the paper analyzes the signals processed in the automobile

instrument and gives an introduction to the sampling circuits and interfaces related to these signals. Following this is the functional categorizing of the circuit modules, such as video buffer circuit, CAN bus interface circuit, and TFT-LCD drive circuit. Additionally, the external EEPROM stores information of the vehicle for history data query, and the external FLASH enables the display of high quality figures. On the whole, the accomplished automobile instrument meets the requirements of automobile instrument markets with its characters of low cost, favorable compatibility, friendly interfaces, and easy upgrading.

As an essential human-machine interface, the automobile instrument provides the drivers with important information of the vehicle. It is supposed to process various information generated by other ECUs and display important driving parameters in time, only in which way can driving safety be secured. However, the traditional mechanical automobile instrument is incompetent to provide all important information of the vehicle. Besides, the traditional instrument meets great challenge with the development of microelectronic technology, advanced materials, and the transformation of drivers’ aesthetics [1, 2]. Moreover, the parking of the vehicle is also a problem puzzling many new drivers. Given this, traditional instruments should be upgraded in terms of driving safety, cost, and fashion.

The digital instrument has functions of vehicle information displaying, chord alarming, rear video aided parking, LED indicating, step-motor based pointing, and data storage. The instrument adopts dedicated microcontroller MB91F599, a 7-inch LCD, and two step-motors to substitute for the traditional instrument. All the information generated by other ECUs can be acquired via not only the sample circuits but also the CAN bus.

The CAN bus interface and the 7-inch TFT-LCD make it more convenient to upgrade the instrument without changing the hardware. If the software needs to be upgraded, we need not bother to take the instrument down and program the MCU. Instead, we can upgrade the instrument via the vehicle’s CAN network without taking the instrument down, which makes the upgrading more convenient. Most of the information from other ECUs can be transmitted via the CAN bus; so, we do not have to change the hardware circuits if some of the ECUs’ signals are changed in different applications. Besides, since most of the driving parameters are displayed on the TFT-LCD, and the graphical user interface can be designed with great flexibility by programming, only the software needs to be revised to meet different requirements of what kind of driving parameters to display and so forth. These characters, together with the reserved interfaces, enhance the instrument’s compatibility in different applications.

On the one hand, there are some automobile instruments which adopt 8-bit MCUs or 16-bit MCUs which have limited peripherals, so it is difficult for them to meet some requirements such as rearview video and high real-time data processing performance. And many extra components are needed if the designer wants to accomplish some functions such as video input. On the other hand, there are some advanced automobile instruments which adopt high performance MCUs (such as i.MX 53, MPC5121e, and MPC5123) and run Linux on them. They even use larger TFT-LCDs (such as the 12.3-inch TFT-LCD with a resolution of 1280 × 480 pixels) to display driving parameters. These automobile instruments show higher performances than the instrument in this paper. However, they are more expensive than this automobile. This instrument is able to provide almost all the functions of the advanced automobile instrument with a lower cost.

The instrument receives signals from other ECUs via the sampling circuits or the CAN bus interface. It can also receive commands from the driver via the button interface. The signals are then processed by the MCU, after which the MCU may send the vehicle information to the LCD or light the LEDs and so forth, according to the results. Therefore, the automobile instrument can be viewed as a carrier of the information flow. And the design of the system can be viewed from two aspects: the hardware system and the information flow based on it.

SMD components are the first choice due to space limitations of the instrument cluster. And the actual power of these components must be no more than 30% of the rated power.3.1.2. Overvoltage Protection

The automobile instrument receives and processes information from other ECUs such as the tachometer, the speedometer, the cooling water temperature gauge, the oil pressure gauge, and the fuel gauge. The signals coming from these ECUs are of different types, according to which different kinds of sampling circuits and interfaces should be designed. Accordingly, a classification of the input signals is first carried out, as shown in Table 1.

The microcontroller is essential to the performance of the instrument cluster. Therefore, the microcontroller that suits the system should have rich peripherals to reduce extra components, thus saving the space of the cluster and enhancing the stability of the system. Meanwhile, the operating frequency should be high and the memory size should be large for the demand of speed and accuracy in real-time processing. Besides, various operation modes are needed to lower down the power consumption.

Respecting the above mentioned factors, we finally chose the MB91F599 produced by Fujitsu as the microcontroller. The MB91F599 is particularly well-suited for use in automotive instrument clusters using color displays to generate flexible driver interfaces. It integrates a high performance FR81S CPU core which offers the highest CPU performance level in the industry. Besides, it has a graphics display controller with strong sprite functionality, rendering engine, and external video capture capabilities. These greatly reduce the need for extra components and enhance the stability of the system. The rendering engine can operate in combination with the video capture to enable image manipulation. Overlaid graphics such as needles or parking guidelines can be rendered in conjunction with captured video, which helps to accomplish the aided parking. What is more, multiple built-in regulators and a flexible standby mode enable the MB91F599 to operate with low power consumption.

Square wave signal is the signal that comes from the tachometer. The engine speed, the velocity of the vehicle, and the mileage are proportional to the frequency of the square wave signal. However, the square wave is not “standard” because it is often corrupted by interferences. Besides, the peak voltage of the square wave is +12 V while the I/O voltage of the microcontroller is . The main task for the circuits is to remove the interferences and convert the +12 V voltage to . As shown in Figure 3, the square wave signal is input from node ②; node ① is connected to one pin of the microcontroller.

where is the engine speed, is the frequency of the square wave, and is the number of pulses generated by the tachometer in every circle of the wheel.

where is the velocity of the vehicle, is the frequency of the square wave, is the diameter of the wheel, is the reduction ratio of the main reducer, and is the number of pulses generated by the tachometer in every circle of the wheel.

Since the FLASH size of the microcontroller is only 1 MB which is limited for the storage of pictures displayed on the LCD, external FLASH is needed to store different kinds of meaningful pictures such as the background of the dial. Two S29GL256N chips with a memory capacity of 256 Mb are chosen for picture data storage for their high performance and low power consumption. The application circuits of the chips are provided in their datasheets, so it is unnecessary to go into the details of them here.

The 7-inch TFT-LCD has a resolution of pixels and supports the 24-bit for three RGB colors. The interface of the 60-pin TFT-LCD can be categorized into data interface, control interface, bias voltage interface, and gamma correction interface.

The data interface supports the parallel data transmitting of 18-bit (6 bits per channel) for three RGB colors. Thus, a range of colors can be generated. The control interface consists of a “horizontal synchronization” which indicates the start of every scan line, a “vertical synchronization” which indicates the start of a new field, and a “pixel clock.” This part is controlled by the graphics display controller which is integrated in the MB91F599. We just need to connect the pins of the LCD to those of the microcontroller correspondingly.

Bias voltages are used to drive the liquid crystal molecules in an alternating form. The compact LCD bias IC TPS65150 provides all bias voltages required by the 7-inch TFT-LCD. The detailed circuit is also provided in the datasheet of TPS65150.

The greatest effect of gamma on the representations of colors is a change in overall brightness. Almost every LCD monitor has an intensity to voltage response curve which is not a linear function. So if the LCD receives a message that a certain pixel should have certain intensity, it will actually display a pixel which has intensity not equal to the certain one. Then the brightness of the picture will be affected. Therefore, gamma correction is needed. Several approaches to gamma correction are discussed in [20–22]. For this specific 7-inch LCD, only the producer knows the relationship between the voltage sent to the LCD and the intensity it produces. The signal can be corrected according to the datasheet of the LCD before it gets to the monitor. According to the datasheet, ten gamma correction voltages are needed. These voltages can be got from a resistive subdivision circuit.

For this instrument, the LED indicators, the backlight, and the chord alarm need to be supplied with a voltage of +12 V; the CAN transceiver, the EEPROM, and the buttons need to be supplied with a voltage of +5 V; the video buffer circuit, the external FLASH, and the data interface of the LCD need to be supplied with a voltage of +3.3 V. Besides, the microcontroller needs to be supplied with voltages of +5 V and +3.3 V simultaneously. Figure 8 offers a detailed block diagram of the power supply for the automobile instrument.

The main task for the program is to calculate the driving parameters of the vehicle and display them on the TFT-LCD. The calculation is triggered by the input signals via the sampling circuits or the CAN bus. The main program flow chart of the system is shown in Figure 10.

The design scheme of a TFT-LCD based automobile instrument is carried out form aspects of both the hardware and the main program flow chart. The MB91F599 simplifies the peripheral circuits with its rich on-chip resources and shows high performance in real-time data processing. The automobile instrument is capable of displaying the velocity of the vehicle, the engine speed, the cooling water temperature, the oil pressure, the fuel volume, the air pressure, and other information on the TFT-LCD, which contributes a lot to driving safety and satisfies drivers’ aesthetics. Besides, the rearview video makes the parking and backing easier and safer for the driver. Moreover, the CAN bus interface and TFT-LCD make it easier for the upgrading of the instrument without changing the hardware, thus saving the cost.

Stoneridge instrument clusters are at the core of delivering vehicle operating data to the driver, whether it is a classic analog gauge cluster or a fully reconfigurable full TFT display cluster with animated 3D graphics. Our first mass produced electronic instrument cluster was introduced to the market in 1988. Since then, our instrument clusters have been designed and built using Stoneridge advances in hardware and software platforms and are adapted to meet each customer’s vehicle-specific requirements.

A thin-film-transistor liquid-crystal display (TFT LCD) is a variant of a liquid-crystal display that uses thin-film-transistor technologyactive matrix LCD, in contrast to passive matrix LCDs or simple, direct-driven (i.e. with segments directly connected to electronics outside the LCD) LCDs with a few segments.

In February 1957, John Wallmark of RCA filed a patent for a thin film MOSFET. Paul K. Weimer, also of RCA implemented Wallmark"s ideas and developed the thin-film transistor (TFT) in 1962, a type of MOSFET distinct from the standard bulk MOSFET. It was made with thin films of cadmium selenide and cadmium sulfide. The idea of a TFT-based liquid-crystal display (LCD) was conceived by Bernard Lechner of RCA Laboratories in 1968. In 1971, Lechner, F. J. Marlowe, E. O. Nester and J. Tults demonstrated a 2-by-18 matrix display driven by a hybrid circuit using the dynamic scattering mode of LCDs.T. Peter Brody, J. A. Asars and G. D. Dixon at Westinghouse Research Laboratories developed a CdSe (cadmium selenide) TFT, which they used to demonstrate the first CdSe thin-film-transistor liquid-crystal display (TFT LCD).active-matrix liquid-crystal display (AM LCD) using CdSe TFTs in 1974, and then Brody coined the term "active matrix" in 1975.high-resolution and high-quality electronic visual display devices use TFT-based active matrix displays.

The circuit layout process of a TFT-LCD is very similar to that of semiconductor products. However, rather than fabricating the transistors from silicon, that is formed into a crystalline silicon wafer, they are made from a thin film of amorphous silicon that is deposited on a glass panel. The silicon layer for TFT-LCDs is typically deposited using the PECVD process.

Polycrystalline silicon is sometimes used in displays requiring higher TFT performance. Examples include small high-resolution displays such as those found in projectors or viewfinders. Amorphous silicon-based TFTs are by far the most common, due to their lower production cost, whereas polycrystalline silicon TFTs are more costly and much more difficult to produce.

The twisted nematic display is one of the oldest and frequently cheapest kind of LCD display technologies available. TN displays benefit from fast pixel response times and less smearing than other LCD display technology, but suffer from poor color reproduction and limited viewing angles, especially in the vertical direction. Colors will shift, potentially to the point of completely inverting, when viewed at an angle that is not perpendicular to the display. Modern, high end consumer products have developed methods to overcome the technology"s shortcomings, such as RTC (Response Time Compensation / Overdrive) technologies. Modern TN displays can look significantly better than older TN displays from decades earlier, but overall TN has inferior viewing angles and poor color in comparison to other technology.

The transmittance of a pixel of an LCD panel typically does not change linearly with the applied voltage,sRGB standard for computer monitors requires a specific nonlinear dependence of the amount of emitted light as a function of the RGB value.

Less expensive PVA panels often use dithering and FRC, whereas super-PVA (S-PVA) panels all use at least 8 bits per color component and do not use color simulation methods.BRAVIA LCD TVs offer 10-bit and xvYCC color support, for example, the Bravia X4500 series. S-PVA also offers fast response times using modern RTC technologies.

TFT dual-transistor pixel or cell technology is a reflective-display technology for use in very-low-power-consumption applications such as electronic shelf labels (ESL), digital watches, or metering. DTP involves adding a secondary transistor gate in the single TFT cell to maintain the display of a pixel during a period of 1s without loss of image or without degrading the TFT transistors over time. By slowing the refresh rate of the standard frequency from 60 Hz to 1 Hz, DTP claims to increase the power efficiency by multiple orders of magnitude.

Due to the very high cost of building TFT factories, there are few major OEM panel vendors for large display panels. The glass panel suppliers are as follows:

External consumer display devices like a TFT LCD feature one or more analog VGA, DVI, HDMI, or DisplayPort interface, with many featuring a selection of these interfaces. Inside external display devices there is a controller board that will convert the video signal using color mapping and image scaling usually employing the discrete cosine transform (DCT) in order to convert any video source like CVBS, VGA, DVI, HDMI, etc. into digital RGB at the native resolution of the display panel. In a laptop the graphics chip will directly produce a signal suitable for connection to the built-in TFT display. A control mechanism for the backlight is usually included on the same controller board.

The low level interface of STN, DSTN, or TFT display panels use either single ended TTL 5 V signal for older displays or TTL 3.3 V for slightly newer displays that transmits the pixel clock, horizontal sync, vertical sync, digital red, digital green, digital blue in parallel. Some models (for example the AT070TN92) also feature input/display enable, horizontal scan direction and vertical scan direction signals.

New and large (>15") TFT displays often use LVDS signaling that transmits the same contents as the parallel interface (Hsync, Vsync, RGB) but will put control and RGB bits into a number of serial transmission lines synchronized to a clock whose rate is equal to the pixel rate. LVDS transmits seven bits per clock per data line, with six bits being data and one bit used to signal if the other six bits need to be inverted in order to maintain DC balance. Low-cost TFT displays often have three data lines and therefore only directly support 18 bits per pixel. Upscale displays have four or five data lines to support 24 bits per pixel (truecolor) or 30 bits per pixel respectively. Panel manufacturers are slowly replacing LVDS with Internal DisplayPort and Embedded DisplayPort, which allow sixfold reduction of the number of differential pairs.

Backlight intensity is usually controlled by varying a few volts DC, or generating a PWM signal, or adjusting a potentiometer or simply fixed. This in turn controls a high-voltage (1.3 kV) DC-AC inverter or a matrix of LEDs. The method to control the intensity of LED is to pulse them with PWM which can be source of harmonic flicker.

Kawamoto, H. (2012). "The Inventors of TFT Active-Matrix LCD Receive the 2011 IEEE Nishizawa Medal". Journal of Display Technology. 8 (1): 3–4. Bibcode:2012JDisT...8....3K. doi:10.1109/JDT.2011.2177740. ISSN 1551-319X.

K. H. Lee; H. Y. Kim; K. H. Park; S. J. Jang; I. C. Park & J. Y. Lee (June 2006). "A Novel Outdoor Readability of Portable TFT-LCD with AFFS Technology". SID Symposium Digest of Technical Papers. AIP. 37 (1): 1079–82. doi:10.1889/1.2433159. S2CID 129569963.

SHANGHAI and WATERLOO, Canada, June 12, 2022 /PRNewswire/ -- BlackBerry Limited (NYSE: BB; TSX: BB) and BiTECH Automotive (Wuhu) Co., Ltd today announced that their jointly developed advanced digital LCD cluster incorporating the QNX® Neutrino® Realtime Operating System (RTOS) has been deployed in Changan Automobile"s new high-end coupe, the UNI-V. The collaboration marks a significant expansion, following an earlier announcement made in 2021, when the company"s digital instrument cluster was first mass-produced in Changan"s mid-to-high-end SUV, the UNI-K.

As the first coupe in the UNI series, the UNI-V integrates Changan"s comprehensive range of advanced intelligent technologies, including its Interactive Monitoring System, Intelligent Voice Interaction System, and Game-loaded Cockpit, among others. The newly launched UNI-V mirrors the technology and intelligent configuration of the UNI-K, with its LCD digital instrument cluster comprising three distinct parts. Highlighting essential information such as the vehicle"s speed, engine revs and fuel level, the cluster also incorporates Augmented Reality (AR) real-world navigation, as well as a multimedia interface and additional entertainment information. With a rich and vivid display, the instrument cluster can also be personalized to provide users with an intelligent, safe and comfortable driving experience.

By leveraging the QNX Neutrino RTOS, the advanced LCD digital instrument cluster incorporates best-in-class BlackBerry security technologies that safeguard users against system malfunctions, malware and cybersecurity breaches. The QNX Neutrino RTOS provides the necessary technology to power the industry"s next generation of products, while also supporting 64-bit ARMv8 computing platforms and Intel x86-64 architecture. ISO 26262 ASIL D certification by TÜV Rheinland also guarantees that OEMs and manufacturers can utilize the QNX Neutrino RTOS to accelerate product launches and develop connected cars with proven safety and reliable performance.

"The next generation of digital instrument clusters developed by BiTECH using BlackBerry® QNX® technology provides advanced features such as Augmented Reality, key vehicle data, infotainment options and personal customization to the Chinese customer," said Dhiraj Handa, VP, Asia-Pacific, BlackBerry Technology Solutions. "We are pleased to join forces with BiTECH to continue delivering the reliability, functional safety, and cybersecurity that Changan Automobile and other automotive OEMs need."

"The QNX Neutrino RTOS provides a safe and reliable software foundation for our product development, and its safety-critical software solutions shorten the time-to-market," said Zuo Shuangwen, CTO of BiTECH Automotive (Wuhu) Co., Ltd. "We are encouraged by the adoption of our next generation of digital LCD instrument cluster with advanced features being deployed in the Changan UNI-V model and look forward to empowering more automotive OEMs by creating safe and reliable automotive electronics."

With a pedigree in functional safety, cybersecurity and continuous innovation, BlackBerry QNX provides OEMs and Tier 1s around the world with state-of-the-art foundational software and cybersecurity technologies. BlackBerry QNX technology is used in more than 195 million vehicles including in advanced driver assistance systems (ADAS), digital instrument clusters, connectivity modules, handsfree applications, and infotainment systems.

About BiTECHBiTECH Automotive (Wuhu) Co., Ltd is a Sino-foreign joint venture company established in 2012, with more than 500 employees and 20 assembly lines. Its production capacity reaches to more than 4.5 million sets per annum. The company is mainly engaged in the design, development, and manufacturing of high quality automotive electronic products, such as ICU, TFT display terminals, T-Box, smart cockpit domain controllers and AR-HUD. At present, the products are used by Audi, Volvo Group, Great Wall Motors, Changan, Geely, SAIC-GM-Wuling Automotive, Chery and other major manufacturers both in China and abroad.

Parker’s DPS-C (Display Panel Standard, Construction) instrument cluster is an innovative user interface with small installation dimensions that makes complete vehicle information accessible in a single centralized location. By incorporating the DPS-C cluster, a wide range of mobile construction vehicles can be operated more efficiently for greater productivity.

This versatile instrument cluster supports two CAN communication channels, as well as USB. The DPS-C has inputs to measure analog, digital and frequency signals and outputs suited for hydraulic control, or general electrical control.

The DPS-C instrument cluster is ideal for various off-road vehicle applications, with 5 backlit gauges, up to 28 positions for status LEDs (tell-tales), and a 3.5” color LCD screen for operator messages. The robust enclosure has environmentally sealed, Molex MX150 type connectors and is designed to be used in rugged environments.

Recently my TFT screen in the 599 start to blink and yesterday it diedfor a few mins before coming back... I was told by my dealer this requires a full replacement $6000 usd.... I wonder if there is any other way... thanks for your advice.

Recently my TFT screen in the 599 start to blink and yesterday it diedfor a few mins before coming back... I was told by my dealer this requires a full replacement $6000 usd.... I wonder if there is any other way... thanks for your advice.

Having that said, did the guys at ferrari specify the replacement for LCD from their stock (or they even still make it?)? Or would it be provided from a certified third party?

Having that said, did the guys at ferrari specify the replacement for LCD from their stock (or they even still make it?)? Or would it be provided from a certified third party?

Having that said, did the guys at ferrari specify the replacement for LCD from their stock (or they even still make it?)? Or would it be provided from a certified third party?

Click to expand...Not sure I follow your first lines. Are you saying the OP has a replaced screen because he/she calls it TFT and you say the original is LCD? TFT is a type of LCD screen.

Not sure I follow your first lines. Are you saying the OP has a replaced screen because he/she calls it TFT and you say the original is LCD? TFT is a type of LCD screen.

599s were coming with the (regular LCD), and that"s the reason I guess Y lots of owners upgraded to TFT, cuz the regular ones has their problems with time.

599s were coming with the (regular LCD), and that"s the reason I guess Y lots of owners upgraded to TFT, cuz the regular ones has their problems with time.

Click to expand...Think what you want. Your next response makes it clear how little you know about this issue or electronics. For the record, my degree is in electronics engineering so I know the difference. The point is THERE IS NOT AN LCD AND A TFT VERSION; There is only one version. People are getting them repaired and most of the time they replace the driver chip that burns out, they don"t change the panel. And changing the cluster does not require different wiring or different chips. It has to be programmed with an SD but it isn"t voodoo magic.

Think what you want. Your next response makes it clear how little you know about this issue or electronics. For the record, my degree is in electronics engineering so I know the difference. The point is THERE IS NOT AN LCD AND A TFT VERSION; There is only one version. People are getting them repaired and most of the time they replace the driver chip that burns out, they don"t change the panel. And changing the cluster does not require different wiring or different chips. It has to be programmed with an SD but it isn"t voodoo magic.

Think what you want. Your next response makes it clear how little you know about this issue or electronics. For the record, my degree is in electronics engineering so I know the difference. The point is THERE IS NOT AN LCD AND A TFT VERSION; There is only one version. People are getting them repaired and most of the time they replace the driver chip that burns out, they don"t change the panel. And changing the cluster does not require different wiring or different chips. It has to be programmed with an SD but it isn"t voodoo magic.

While we’re being pedantic, Thin Film Transistors are a subset of Liquid Crystal Displays. Rather TFT are most often used as part of an LCD. So the 599/612 does use an LCD display, which is also a TFT display.

While we’re being pedantic, Thin Film Transistors are a subset of Liquid Crystal Displays. Rather TFT are most often used as part of an LCD. So the 599/612 does use an LCD display, which is also a TFT display.

Thanks all. Maybe I should have call it a lcd to start off with. It is the original instrument cluster from day 1. Ferrari local dealer’s quotation is about 6500 usd (located in hk) and I called a few local Ferrari specialist. Most suggested I should just go back to dealer and get it done as it needs some sort of programming.

Unless the programmable memory is corrupted, then coding or other programming of the cluster isn’t an issue for display repair. Those components either won’t be touched, or if they are then the contents can be downloaded and stored first for replication if needed.