TFT LCD Displays Module

DAS  was established in July 2005. We are committed to the customized service, research and development, sales and after-sales service of TFT LCD  Display Module products. We have 16 years of LCD module manufacturing experience and supply excellent TFT-LCD module for different customers.

DAS provides professional customized services, which can customize products with different functions according to your different needs. No matter which function you want, as long as you provide us with specific requirements, we can achieve it, such as voice control, Photosensitive function, touch function, etc. 

The LCD display produced by DAS INDUSTRY LIMITED can be used in different environments. Whether you want to apply our products in houses, factories, or professional laboratories, we can produce products that are used in different fields, such as High-temperature and corrosion-resistant LCD displays used in factories and full-view LCD displays used in laboratories.

Type of DAS TFT LCD Displays

Big Size TFT LCD Display

DAS supplies large-size TFT displays, from 12.1 to 23.6 inches.

Small Size TFT LCD Display

DAS supplies small-size TFT displays, from 0.96 to 4.5 inches.

High-resolution TFT LCD Display

DAS supplies high-resolution TFT LCD displays, such as HD and FHD displays.

Common resolution TFT LCD Display

DAS supplies common resolution TFT LCD displays, such as 320x240 and 480x800.

Round TFT LCD Display

DAS supplies round TFT LCD displays, such as 2.36 inch and 3.4 inch.

Square TFT LCD Display

DAS supplies square TFT LCD displays, such as 4 inch and 1.3 inch.

Bar Type TFT LCD Display

DAS supplies bar type TFT LCD displays, such as 6.86 inch and 10.4 inch.

Middle Size TFT LCD Display

DAS supplies middle size TFT LCD displays, from 5 to 10.4 inches.

Why Choose DAS TFT LCD Displays Module

DAS provide full range of TFT LCD displays Module.

Whether you need a large-size display module or a small-size display module, we can produce the display module that meets your requirements. Even some sizes that are rare in the market. Our values are to solve problems for every customer.

DAS provide TFT LCD display module customization service.

We can customize products with different functions according to your different needs, such as TFT LCD display module with touch panel, temperature sensor and so on.

DAS have been established since 2005.

Since DAS has been engaged in TFT display module manufacturing in 2005, our products have obtained ISO9001 certification and a variety of patents.

DAS provide after-sales service and quality guarantee.

If you have any questions, we will reply to you within 24 hours, and we can optimize the products according to customer product requirements. We provide a one-year quality guarantee and lifetime maintenance.

DAS can customize the interface of TFT LCD displays module

Our LCD module products have a variety of interface types for customers to choose, such as mipi, RGB, lvds, spi, MCU, serial interface.

DAS have some specially shaped TFT LCD displays module

We have round TFT LCD displays, bar type TFT LCD displays, square TFT LCD displays and other non-standard TFT LCD displays.

DAS have an advantage in the price of TFT LCD displays module

Based on years of operation, our company has continuously optimized the supply chain, and the price of raw materials can get the price of the market's comparative advantage. Therefore, our company's LCD module has a price advantage.

Our products have a high rate of good quality.

Our company continuously optimizes the existing production lines, trains employees, purchases automated production equipment, and continuously optimizes the testing process, which greatly reduces the product defect rate. Therefore, our LCD module is a high-quality product that customers can trust.

Features of our products

Our products have the characteristics of ultra-thin, high-definition, high brightness and high temperature resistance. For some industrial-grade or automotive-grade product applications, we can provide different product features according to customer needs.

TFT LCD display module can be equipped with adapter board

Our LCD module can be equipped with HDMI adapter board, Raspberry adapter board, etc., and supports customization.

TFT LCD Displays Module Manufacturer – The Ultimate FAQ Guide

What is a TFT LCD module?

The full name of TFT is Thin Film Transistor (thin film field effect transistor), which means that each liquid crystal pixel on the liquid crystal display is driven by a thin film transistor integrated behind it, so that a high-speed, high-brightness and high-contrast display screen can be achieved. Information, TFT is an active matrix liquid crystal display, and TFT-LCD (thin film transistor liquid crystal display) is a type of most liquid crystal displays. The response time of the TFT liquid crystal display module is relatively fast, about 80ms, and the STN display module is a little slower, which is 200ms. 

The TFT liquid crystal display module is an active matrix LCD module, which can make the arrangement of the liquid crystals have memory, and will not return to the original state immediately after the current disappears. The TFT-LCD module has higher contrast ratio and richer colors than the TN-LCD module, and the screen update frequency is also faster. 

The TFT-LCD module also improves the flickering (water ripple) blur phenomenon of the STN display module Effectively improve the ability to play dynamic pictures. Compared with the STN display module, the TFT display module has excellent color saturation, restoration ability and higher contrast ratio, but the disadvantage is that it consumes more power and the cost is relatively high.

What is TFT?

TFT (Thin Film Transistor) is a thin film field effect transistor. Thin film transistor means that each liquid crystal pixel on the liquid crystal display is driven by a thin film transistor integrated behind it. Thereby, screen information can be displayed at high speed, high brightness and high contrast ratio. 

TFT belongs to active matrix liquid crystal display TFT-LCD liquid crystal display is a thin film transistor type liquid crystal display. TFT liquid crystal has a semiconductor switch for each pixel, and each pixel can be directly controlled by dot pulse, so each node is relatively independent and can be controlled continuously, which not only improves the response speed of the display screen, but also can be precisely controlled Display color gradation, so the color of TFT liquid crystal is more true. 

TFT technology was developed in the 1990s. It is a large-scale semiconductor full integrated circuit manufacturing technology using new materials and new processes. It is the first choice for liquid crystal (LC), inorganic and organic thin film electroluminescence (EL and OEL) flat panel displays. 

TFT is formed on non-single wafers such as glass or plastic substrates (of course also on wafers) by sputtering and chemical deposition processes to form various films necessary for the manufacture of circuits, and by processing the films to produce large-scale semiconductor integrated circuits (LSIC) . The use of non-single crystal substrates can greatly reduce costs, and is an extension of traditional large-scale integrated circuits to large-area, multi-functional, and low-cost.

Where are TFT LCD modules used?

TFT liquid crystal display module has the characteristics of good display performance, excellent price and high temperature and corrosion resistance, so it is widely used in medical equipment, industrial control equipment, car navigation audio and video display, notebook computers, projectors, game consoles, industrial cameras, 3D Printers, cash register equipment, smart home appliances, smart wearables, face recognition machines, smart robots, human-machine interfaces, security building monitoring equipment, portable handheld display devices, sports equipment displays, TV advertising media displays, golf courses-buses Subway station display equipment, communication equipment, instrumentation, desktop display, intelligent digital display and other terminal display fields. 

DAS is a company specializing in the production and sales of industrial display screens, industrial touch screens, optical accessories and other TFT LCD module liquid crystal displays. The products are widely used in medical equipment, industrial handheld terminals, IoT terminals, smart homes and other fields. With complete products, stable supply and favorable price, it is a reliable supplier of TFT display modules.

What are the main components of the TFT LCD module?

The main components used in the LCD module are: LCD panel, IC, backlight, TP, FPC. 

The components that make up the LCD screen from front to back are: polarizer, glass substrate, Black matrix, color filter, Protective film, Common electrode, liquid crystal, Spacer, Display electrode, TFT, storage capacitor, glass substrate, polarizer, Diffuser plate, Prism sheet, light guide plate, lamp tube, reflector. 

In addition, from the perspective of strict management, the circuit design of the driving backlight module is also a component part of the LCD liquid crystal module. The most complicated part is the glass substrate, which consists of two extremely thin glasses with a micron-scale gap in the middle, filled with liquid crystal molecules, each pixel is an independent liquid crystal cell, and each liquid crystal cell has The electrode is connected to the control unit on the substrate. Each pixel here refers to one RGB instead of one RGB. 

Therefore, multiplying the physical resolution pixel of the liquid crystal by 3 is the real physical unit pixel. There are some special ones. The four-color LCD panel consists of RGB plus Y (yellow), and the physical unit pixel is 4 times the nominal resolution. Therefore, there are a large number of unit pixels on the glass substrate and fine lead electrodes, which are basically transparent, so that it is difficult to visually distinguish.

What are the types of TFT LCD modules?

Liquid crystal display modules (LCM) can be classified according to the manufacturing process, and can also be classified according to the type of display content.

According to the production process, it is divided into: COB, COG, TAB, COF modules; 

according to the type of display content, it is divided into: graphic type, character type, segment code type. 

The segment code type liquid crystal display module has a simple structure and is mainly used to display data, western identifiers, some special marks, fixed graphics and so on. The actual main uses are: various data dashboards, timers, electronic counters, etc. 

The identifier dot matrix liquid crystal display module has its own identifier generator, which has large display content, rich functions and moderate price. It is mainly used to display Western characters, data and English letters. The actual main uses are: multi-purpose instrument equipment and function display. 

The characteristic of the graphic dot-matrix liquid crystal display module is that the clarity is continuously sorted, and it can write and display continuous and detailed graphics and Chinese characters. It is widely used in mobile phones, PDAs and various information content phones.

What is the resolution of DAS's TFT LCD module?

The resolution of a TFT display screen refers to the number of pixels on the display screen, usually the number of pixels in the horizontal direction multiplied by the number of pixels in the vertical direction. 

With the same TFT display size, the higher the resolution, the clearer the displayed image will be. But for TFT display, the best resolution is also very important. The best resolution is not limited to the size, but the best resolution of the TFT display according to the screen ratio of the TFT display and the comprehensive factors of the pixels. Liquid crystal display modules of different sizes have different resolutions. 

Common resolutions of 3.5-inch TFT displays are: 240*320, 320*480, 480*272, 480*854, etc. 

Common resolutions of 5.0-inch TFT displays are: 720*1280, 768*1024, 768*1280, 800*480, 854*480, 1024*600, 1080*1080, etc. 

Common resolutions of 7.0-inch TFT displays are: 800*480, 800*1280, 1024*600, 1200*1920, 1280*768, 1920*1080, etc. 

What's more, DAS can customize TFT display modules according to the resolution required by customers.

Can the lcd module be customized?

The TFT LCD module can be customized, and the DAS custom TFT LCD module is mainly divided into the following steps. 

First, DAS will determine the requirements put forward by the buyer, including the LCD screen size, resolution, brightness, interface, shape size, AA area size, PIN definition, temperature range, service life, and touch screen specific requirements, etc. 

Then, DAS will carry out the subsequent mold opening work according to the needs of the buyers. The LCD manufacturers generally design and issue drawings to the terminal buyers within one week after receiving the demand. Special attention should be paid to confirming Matters include shape design drawings, modification of drawings, making molds, design layout, photolithography film production (electrode x2, border, silver dots, PI, test PCB), silk screen, letterpress, test frame this series. 

Finally, sign the confirmation drawing, so that the lcd LCD screen manufacturer can send it to relevant suppliers for mold opening and customization. After confirming the drawing, the LCD manufacturer will arrange it. Generally, the specific proofing cycle will be reported, which mainly depends on the difficulty of product production. Generally, the proofing time of the module is about 20 days, and the proofing cycle of the assembly is 25 days days or so. 

After receiving the samples, LCD manufacturers will generally pass strict tests before sending them to the terminal buyers. The terminal buyers can also re-test and debug after receiving the samples to confirm that there are no problems with the samples, and can sign for confirmation. Samples are sent to LCD manufacturers for small batch production.

What is the difference between TFT liquid crystal display and TFT liquid crystal display module?

The difference between TFT liquid crystal display and display module is that TFT liquid crystal display is an integral part of liquid crystal module. components, etc. assembled together. The liquid crystal module usually refers to a small-sized liquid crystal display, and a large-sized liquid crystal screen with control is usually not called a liquid crystal module, but a display or a liquid crystal display. 

The difference between TFT liquid crystal display and liquid crystal display module is also reflected in the type. Liquid crystal modules can be mainly divided into two types: COB (Chip On Board) liquid crystal modules and COG (chip on glass) liquid crystal modules according to the process type. 

However, the LCD screen can be divided into OLED LCD screen, STN LCD screen, STN LCD screen, STN LCD screen, TFD LCD screen. 

To sum up, from a conceptual point of view, LCD (Liquid-Crystal Display) is a liquid crystal display screen, and LCM (Liquid-Crystal Module) is a liquid crystal module. 

From an industry perspective, LCD is a big concept and the name of the liquid crystal display industry. LCM cannot be used as a proxy for liquid crystal. From a product perspective, LCD represents the front-end product or process, while LCM represents the back-end product or process. 

LCD specifically refers to the liquid crystal screen (the LCD Panel part is Cell), and LCM is a combination of the following modules: LCD Panel+ACF+Driver IC+PCB+FPC+B/L Module + iron frame, from the production point of view, for small and medium-sized LCD screens , LCD manufacturers mainly make LCD screens, LCM manufacturers buy the former LCD screens and combine other modules into modules. 

One LCD can supply multiple LCM screens, and LCM factories can also purchase screens from several LCD factories; LCD screens (such as LCD TVs) are basically sold by LCD factories themselves as modules, while those bought by TV factories are modules, which can be directly made into TVs.

What is the difference between TFT display module and LED display module?

First of all, TFT display module is a type of LCD display module, so the display mode and backlight of TFT display module and LCD display module are the same, but the backlight of LED display module is a comparison The new type of backlight, which uses infrared light, is a single-tube design. 

The TFT display module uses the vertical polarizers between the upper and lower fences to be filled with liquid crystals, and uses an electric field to control the rotation of the liquid crystal branches to change the direction of light travel. As a result, different electric field sizes will form Different colors. 

LED is short for Light Emitting Diode. The LED display is a display composed of light-emitting diodes. It adopts low-voltage scanning drive, which has the characteristics of low power consumption, long service life, low cost, high brightness, few failures, large viewing angle, and long visual distance. 

TFT-LCD and LED are two different display technologies. TFT-LCD is a display screen composed of liquid crystals, while LED is a display screen composed of light-emitting diodes. The only difference between LEDs and LCDs is that they have different types of backlights: LED backlights and CCFL backlights, which are diodes and cold-cathode lamps, respectively.

What are the interface types of TFT display module?

The most common interfaces on the TFT display module mainly include several major interfaces, namely VGA interface, DVI interface, HDMI interface, DP interface and LVDS interface. 

VGA interface: Also known as D-Sub interface, it is the most common interface for display modules. It is a color-difference analog transmission interface. The D-type port has 15 holes on it, which transmit different signals. 

DVI interface: DVI is relatively complex in the display interface, mainly divided into three types, DVI-A, DVI-D and DVI-I, and DVI-D and DVI-I have single-channel and dual-channel points. 

HDMI interface: HDMI display interface is the most common interface in our daily life. It is widely used in home multimedia devices. It is more suitable for a dedicated digital interface for video transmission, which can transmit audio and video signals at the same time. The maximum data transfer speed is 2.25GB/s. 

DP interface: DisplayPort is also a high-definition digital display interface standard. It can be connected to a computer and a monitor, as well as a computer and a home theater. 

LVDS interface: It is a low-voltage differential signal technology interface. In a liquid crystal display, the LVDS interface circuit includes two parts. They are the LVDS output interface circuit (LVDS transmitter) on the driver board side and the LVDS input interface circuit (LVDS receiver) on the LCD panel side.

Are TFT display modules fragile?

First, not all TFT display modules are fragile. The firmness of the TFT display module depends on the following two factors, whether the overall structure design is reasonable and the material of the TFT display module. 

The structure of the TFT display module is a glass structure, so it is very important to fully consider how to protect the TFT display screen in the design. In addition to the design of the whole machine, the TFT display module itself also needs to use better raw materials to ensure that the display screen is not broken. 

Generally, DAS can use tempered glass as the cover plate of the screen, so that the fading of more than 2 meters can still be intact. For terminal products in general industrial scenarios, the whole machine has to pass the drop test. A steel ball with a characteristic weight drops directly from a certain height to the TFT display screen, and the whole TFT-LCD display screen directly falls to the ground. , the screen function is not affected to pass.

What is the color generation principle of TFT liquid crystal display module?

The TFT liquid crystal display module is a layered structure composed of different parts. The rearmost layer is a backlight layer made of phosphors that emits light. The light emitted by the backlight layer enters the liquid crystal layer containing thousands of crystal droplets after passing through the first polarizing filter layer. 

The crystal droplets in the liquid crystal layer are all contained in tiny cell structures, one or more of which make up a pixel on the screen. When the electrodes in the LCD generate an electric field, the liquid crystal molecules will be twisted, so that the light passing through it will be refracted regularly, and then filtered by the second filter layer and displayed on the screen. 

Typically, in a color LCD panel, each pixel consists of three liquid crystal cells, each of which is preceded by a red, green, or blue filter. In this way, light passing through different cells can display different colors on the screen. Almost all LCDs used in notebook or desktop systems use thin-film transistors (TFTs) to activate the cells in the liquid crystal layer. 

TFT-LCD technology can display clearer, brighter images. The color generation principle of the TFT liquid crystal display module is based on the familiar red, green and blue three primary color light mixing principle (RGB). By adjusting their brightness ratios, you can get the colorfulness that people want, and the amount of color you get is called color depth. There is always a white light source and a color filter film in the TFT liquid crystal display module. 

The driver IC will automatically control how much the white light source passes through the color filter film, so as to combine the three primary colors of light. With the three primary colors of light, the brightness can be adjusted. Proportions, mix out various colors of light.

How to choose a TFT LCD module supplier?

TFT liquid crystal display modules are widely used. Most of the smart products use TFT liquid crystal display modules as display terminals. 

The size covers a very comprehensive range from 0.8 inches to 110 inches. The display effect is clear, and high brightness can be achieved from 200-1500 brightness, wide temperature, temperature from -20 to 70 degrees Celsius, and supports the touch function of human-computer interaction. 

When choosing a supplier of TFT LCD modules, you can choose DAS INDUSTRY LIMITED. DAS is a professional TFT liquid crystal display module supplier. Its business scope includes: character module, graphic dot matrix module, and color TFT module. While providing standard products, we also have the ability to design and develop customized products for special purposes and specifications according to customer needs. 

Among them, the specifications of lattice modules include COB, SMT, TAB, COG and other packages. At the same time, we also provide production and production of OLED displays and provide professional complete machine production solutions.

How to choose LCD module?

Of course, it is necessary to choose tft color display products according to your needs. How to choose a suitable product can be considered from several aspects such as installation method, size, panel structure, signal type and LCD screen performance.

Industrial LCD screen installation methods can be divided into rack-mounted, flip-chip, embedded, open-type displays and modules. The embedded tft color display is directly embedded from the front of the cabinet, and fixed on the side using hooks. 

The flip-chip tft color display is flipped from the back of the cabinet, and only the liquid crystal display area is displayed on the front of the cabinet. The rack-mounted tft color display is used in industrial control cabinets, chassis and other equipment. 

DAS has many years of experience in the industry and supports the production of TFT modules and OLED modules and customized complete machine solutions. At the same time, DAS cooperates with many suppliers, which has the advantages of price and supply chain in the industry.

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