OLED display the popularity of television to face many challenges

4K LCD TV manufacturers in 2013 focus on the promotion of the objects and the source of profits for firms, rather than risk launching a post-sale, the promotion of new products more expensive, not as good as the first launch of a mature technology products, such The child is more risk-averse. Because the yield and life issues, OLED can not mass production marketed.TFT Display Module

Large-size frit package module is still too fragile, will reduce the panel life. From the trial production situation, whether it is the poor stability of low-temperature polycrystalline oxide TFT technology to produce large-size backplane, 55 "AMOLED TV panel is not repaired before yield only single digits, and repair after yield less than 30%. AMOLED TV main problems in the production process, the original Korean TV panel makers as early as at the beginning of the year in the TV production, mainly due to the AMOLED TV in commercialization development challenges, coupled with 4Kx2K (ultra-high resolution) LCD TV development prospects are very good. Sony film and television producers from film source to the device vigorously implement the popularity of 4K, which also makes a beautiful 4K TV development prospects.

Now in early April, the so-called OLED display products listed still missing, but 4K TV in the market to steal the show in a lot of media have seen quite a number of manufacturers in the large hot speculation, the lowest price of some products also fell below $ 10,000 mark.

To promote the introduction of AMOLED TV is bound to put a lot of publicity activities and costs to consumers. Consumers 4Kx2K TV due to high production costs, 55 "AMOLED TV plan price of about $ 10,000, compared to the LCD TV is very expensive, and life and stability problems of the after-sales service costs can not be estimated. acceptance of more obvious. production 4Kx2K LCD TV easier than production 4Kx2KAMOLED TV panel for panel makers, in after 2012IFA, South Korea panel makers AMOLED lost some confidence, and recognize that this can further increase the investment AMOLED.OLED Display Module

Black Friday period, a number of large-size LCD TV prices are very competitive, and the results from the sales point of view, many consumers still prefer to buy larger and more cost-effective LCD TV, high-end, or too thin and beautiful OLED TV expensive. The AMOLED TV attention has been reduced, the entire supply chain will be more focused on the ultra-high resolution.

TFT-LCD to see 4K New Hope

Is currently the 4K panel on the market with full HD FHD panel price difference is about 50%, with the 4K panel yield improvement and cost, it is expected that when the 4K panel with FHD panel price difference is less than 30% of the whole plant will produce more The big attraction. 4k technology is 4096 x 2160 pixel resolution, which is four times the resolution of HDTV, belongs to the ultra-high-definition resolution. In fact, the production of other technical panel can also reach the 4k level. TFT-LCD panels "4K" very mature, OLED is still in the early industrialization, many of the technical aspects of the advantage does not reflect the product application. At the same time, the short term is difficult to reduce the price is relatively high.

In the consumer market, consumers gradually recognized the large-size TV, increase the demand for large-size panels, global TFT-LCD LCD panel demand growth rebounded to 14% in 2012. Slow down year by year after the global TFT-LCD panel production capacity growth in 2006 reached 55% in 2011 to 15% in 2012, only 7% is forecast in 2013, in 2014 the global TFT LCD Module panel production capacity increase will be further reduced to 4%. The market forecast will become the trend of the large size of the LCD panel demand will continue to maintain double-digit growth in the next two years. Global LCD panel production capacity slowdown as well as to enhance the market demand, the industry supply and demand changes in the relationship.

In the third quarter of 2012, just warming global panel market, Huaxing power three months in advance to achieve design capacity, the fourth quarter net profit of 3.9 billion, the first year of the 8.5 generation line operation profit. 4k for the entire TV industry chain has injected new vitality. Among them, the LCD panel production enterprises will be the first to benefit. After nearly two years of recession, the global LCD panel industry in the second half of 2012 ushered in returning to the pick up.Character LCD Display

Functional concept of the "3D", "Smart TV", consumers are starting to become more pragmatic, quality become an important factor affecting the purchase. TV industry in recent years into a size and price competition, and the 4K bring TV hardware technology upgrades. 4k product prices more popular domestic brand 50 inch 4k TV priced at about 10,000 yuan, has little difference with the high-end HDTV. Although the source of the film is less, but for the television industry, the hardware first is the norm. 4K other products such as cameras, projectors launched website launched the 4K movie download, 4K TV development is widely optimistic.

4k ultra high definition "in 2013 has become the most popular one of the IT vocabulary, TFT-LCD display industry hope to see a new development.

LCD-screen applications in recent years to analyze the future market

2010 LCD screen splicing products are used in some very low-end security projects. The monomer scale of these projects tend to be smaller, the overall size of the market is not low, but the profit ratio is relatively high. During this period, the LCD display market showed the general characteristics of the "low level". LCD display market matures, not only on the technological advances in the product, but also in the market breakthrough applications. After 2010, the LCD splicing products began to appear in the technical progress on the basis of a breakthrough in many applications. For example, digital signage outdoors in bright stitching, large-scale security command center, these new fields of application not only to expand the the LCD splicing industry market, is to enhance the taste level of the overall market, and profit levels. Progressive breakthrough in the application market on the basis of the number of support manufacturers of LCD screen mosaic wall in the last two also significantly increased.TFT LCD Display

End of 2011, the number of companies engaged in LCD-screen industry, compared to the same period in 2010 nearly doubled, Samsung, LG and other LCD screen technology as the leading LCD Video Wall industry is showing unprecedented momentum of development. Since 2009, Samsung introduced a 46-inch ultra-narrow LCD splicing products, LCD-screen market continued to show high growth.

In 2012, LED backlight for LCD-screen good market performance so that more and more manufacturers are beginning to introduce each LED backlit LCD screen splicing products, many businesses, including Chong Wei, Skyworth, TV News, Trinidad and other well-known manufacturers have launched the LED-backlit LCD screen splicing products. The application of LED backlight for LCD-screen success for LCD-screen to open up the green channel of energy saving and environmental protection, business promotion sales and a bright spot, growing very fast.

Monitoring is basically LCD splicing screen 7 * 24 hours of operation, the advantage of low energy LED light source you can save a lot of electricity costs, while reducing the cooling problems caused by large power consumption, extend the LCD splicing screen life . Technically, the traditional CCFL light source products on the decline, the use of LED backlight LCD screen splicing products, higher brightness, smaller power consumption. For applications in the security surveillance industry is very advantageous.Character LCD Modules

Touch screen works

We will look further into the two most commonly used touch-screen technology. The most widely used technology is resistive touch. Before the might of the vast majority of people are in the bank's ATM machine, many credit card in the mall inspection machines, or even enter a single ordering in a restaurant used this type of resistive touch technology. Projection-type capacitive touch screen, use the range is not so wide, but with the rapid development of power. Projection-type capacitive interface mobile phones and portable music player in the market. Either resistive or capacitive technology has a sturdy electrical component, the use of ITO (indium oxide tin, transparent conductors), these two techniques will be long-term use.Low Temperature Display
The resistive touch screen includes a flexible top layer, then a layer of ITO, an air gap, followed by another layer of ITO. The panel has four wires attached to the ITO layer: "X" layer of the one of the right and left side of each one of the top and bottom of the "Y" layer.
When the flexible top-level pressure contact with the following layer detected by touch. The position of touch is measured by the following two steps: First, X-right "to be driven to a known voltage, while" X Left "is driven to ground, the voltage read from the Y sensor. This provides the X coordinate. Repeat this process for the other axis to determine the precise location of the finger.
Resistive touch screen, 5-wire and 8 linear. 5-wire type with a more durable and low-resistivity conductor layer instead of the top of the ITO layer. 8-line panel through better calibration characteristics of the panel to achieve higher resolution.
For resistive technology has several disadvantages. The flexible top transmittance of only 75% -80% of the (Impact resolution), and Multiple sources of error in the measurement process of the resistive touch screen. If the ITO layer is inconsistent, the resistance of the sensing range will not be linear. 10-12 measuring voltage accuracy, which is difficult in many environments. To the touch points and lower the LCD image alignment, many existing resistive touch screen requires periodic calibration.
On the contrary, the projection-type capacitive touch screen with no moving parts. ITO and the transmittance is almost 100% of the glass sheet between the LCD and the user. The projection type capacitance sensing hardware comprises a glass top (see Figure 2), The following is an X sensor array, a layer of insulating glass, then the following is the Y sensor array is located on the glass substrate. The panel is connected to each of the X and Y sensor, 5 x 6 panel a total of 11 connections (as shown in Figure 3), 10 x 14 panel 24 sensor connection.graphic lcd display module

Three touch technology

Resistive touch technologies: resistive touch technology is the most commonly used touch-screen technology. For the high flow of business applications, and on the screen drops and other residues immunity. The resistive touch screen is usually the lowest-cost solution. React to pressure, with a finger, gloved hand, stylus or touch like credit cards such other objects.custom lcd
Surface capacitive touch technology: surface capacitive touch technology display much clearer definition than the commonly used plastic film resistive touch. Detecting changes in capacitance caused due to the touch, the sensor is located in the four corners of the display surface capacitive type display. Kind of touch screen with your fingers or other capacitive objects touch incentive.
Protective capacitive touch: protective capacitive touch is a technology that only recently entered the market. The technology can also provide excellent light transmittance, but also the advantage of having a specific surface capacitive touch better. Projection-type capacitive touch does not require positional alignment, and can provide a much higher positional accuracy. Projection-type capacitive touch another exciting place to be, that is, it is also able to support multi-touch.TFT LCD Misplays

Touch panel collecting

1, the front panel or frame
The outermost layer of the front panel or the frame is the end product. In some products, the frame around the transparent cover up against the harsh climate of the external or the effects of humidity, but also to prevent the following sensing products subject to scratching and damage (see # 3). Some time, the outermost frame simply covering the top of the touch sensor, this case is merely a decoration.Character LCD Module
2, touch controller
Typically, the touch controller is a small micro-controller chip, which is located between the touch sensor and PC / or embedded system controller. The chip can be fitted into the internal system of the controller board can be put to this paste to a glass touch sensor on the flexible printed circuit (FPC). The touch controller will extract the information from the touch sensor, and converts it into a PC or embedded system controller is able to understand the information.
3, the touch sensing
Touch screen sensor with a touch response surface of the transparent glass. The sensor is placed above the LCD, the touch area of ​​the panel to cover the viewable area of ​​the display. There are many different kinds of touch sensing technology on the market today, each using different methods from each other to detect a touch input. Basically, these techniques are in touch, so that the current flowing through the panel, resulting in the change of a voltage or signal. This voltage change will touch the controller sensing, in order to determine the position of the touch screen.
4, the liquid crystal display (LCD)
The vast majority of touch screen system is used in traditional LCD. LCD touch product selection method with the traditional system is basically the same, including the resolution, resolution, refresh rate, and cost. But the touch screen Another major consideration is the radiation level. The touch sensor technology is based on the touch panel, yielding a tiny electrical changes, and can radiate electrical noise LCD is the difficulty in the design. Before selected for the LCD touch system, with the touch sensor provider should be consulted.
5, the system software
The touch screen driver software from the original manufacturers (such as mobile phones, embedded OS) can also be a later installation of software (like a traditional PC on a touch screen). The software should enable the touch screen and the system controller to work together. It will tell the operating system how to parse the touch event information from the touch controller. PC-based applications, the vast majority of touch screen drive like a mouse. This makes the touch screen and continuously in the same location on the screen by the mouse is very similar. In embedded systems, embedded control drive will appear on the screen with the received position of touch than.lcd graphic display