TVs usually work in residential premises or in conditions of complete lighting control, therefore they have image brightness in the range of 250-400 cd/m2. Displays operate in opposite conditions, that is, there is no control over the level and number of light sources, for example, they are operated in strong daylight or sunlight, so the brightness index can reach high values of 500/700/2500 cd/m2 and higher.
An extremely important factor is the type of image that the matrix reproduces. Thus, household TVs display high-quality dynamic images, while in the case of static images, this leads to overheating of the matrix elements and their rapid burnout. Accordingly, in the case of using displays to display a static image, this disadvantage is completely absent, because it takes into account all possible increased operating loads of each individual element of the matrix.
We see a radically opposite approach in the development of the TV case and display. The manufacturer pays due attention to the TV case, providing a modern design and ease of movement. High-quality thin frame, strong multifunctional support, easy access to the settings buttons, all these are attributes of a home TV device. While the attribute of the professional display is the simplest and minimalist design of the case aimed at protecting internal parts from mechanical damage and environmental influences (protection from dust and high humidity). The display control buttons have an inconvenient location on the back of the case, which minimizes the possibility of changing settings by untrained personnel
The displays are designed for use with a variety of professional image sources, so they usually contain a list of professional interfaces, such as HDMI, DP, DVI-D, Audio, USB and many additional service connectors. Whereas, TVs now have limited capabilities in this direction: several USB and HDMI ports.
The display processor (SoC, system on Chip), unlike the home TV processor, must meet the criteria of high performance and reliability and support the operation of a large amount of RAM. It is used to control the display and process numerous graphic formats. In addition to the main work related to the reproduction of graphic images, the processor performs a list of hidden functions, such as support for specially designed image enhancement algorithms. To ensure all these requirements, technological improvements are constantly being made on processor devices, which must meet the modern requirements of the telecommunications industry.
Given all the differences between the TV and the display, you can see the difference in warranty. The customer receiving in use the modern information display receives not only the device for performance of a certain type of functions, he receives the complex functional decision with a large number of additional convenient and useful opportunities. That is why today modern displays are a source of profit and business development. Taking into account all the factors in the course of production and high responsibility to customers creates all the conditions for the operation of this type of product. The warranty period of the displays is extremely individual, which takes into account all possible factors of influence, such as type, model and even operating conditions. In general, the manufacturer's warranty on information displays is usually at least 1-2 years longer than the operating conditions of conventional home TVs.
The matrices used in the information displays have improved performance characteristics that are designed for long life and have additional screen protection. In the course of their production a large number of additional factors are taken into account, which are not important in the production of household TVs, namely: operating conditions of each individual active element of the matrix, temperature loads, environmental features and many others. Much attention is paid to the coating of the display screen during production. The household TV has a glossy screen coating, so the home TVs is operated in fully controlled rooms to external light sources (lamps, windows, etc.). Whereas, in cases of commercial use of displays in the premises there is usually a large number of uncontrolled light sources (sun, chandeliers, spotlights, etc.), which sparkle on the surface of the matrix and distort its image. To prevent such a negative optical effect, the displays have a matte or anti-reflective matrix coating.
With the development of the telecommunications industry, there have also been radical changes in the direction of software development, which includes a list of important service functions, so modern displays already contain the appropriate set of software for setup and monitoring. In turn, LG has paid sufficient attention to this issue, so a software package LG SuperSign was created, which is used to perform a full range of work on the maintenance and support of information panels. It includes a wide range of functional programs with which you can make full settings and remote monitoring of the information display, create content, schedule and perform device software updates, perform calibration and many, many other convenient additional features. In contrast to displays, home TVs can only be controlled and set up locally with the remote control.
The matrix of displays is a high-tech product and a sensitive element of the television device and the conditions of its operation significantly affect the image quality, therefore, the further conditions of its operation are always taken into account in the production of matrices. For household devices, the operating temperature corresponds to the temperature conditions of residential premises within 20-25 °C. The matrices used in displays can be used in wide temperature ranges from -20 °C to 80 °C, for example, in cases of constant direct sunlight.
Displays are made of industrial-type components with high degrees of reliability and accuracy class. Printed circuit boards and microcircuits are covered with a special protective coating against the effects of the external environment (dust, humidity and aggressive acids). They have a number of schematic and technical solutions for ensuring continuous operation throughout the entire life cycle, namely: additional radiators are used to cool the display processors and power supplies, which have a high degree of reliability and stability.
In contrast to displays on household televisions, shades of gray are distorted to provide richer colors in cases where moving objects are displayed. The displays show the full range of shades of gray with a clear linear gradation from black to white, given all 225 levels of brightness. This requirement is crucial for displaying bright computer images.
TVs are designed to work only in landscape layout, while displays are full automated devices. They contain additional calculation algorithms that provide the possibility of quality work, both in landscape and portrait modes.
Almost all display models, unlike home TVs, have RS232 and Ethernet ports. They are designed for remote monitoring and adjustment of displays and are usually not available in home TVs. With their help the control of the full list of functions without use of the remote control of display. In addition, some series of displays include pass-through control ports with which they are sequentially switched, which provides control of a group of displays or an individual in a group.
The undoubted advantage of displays over television equipment is the conditions of their use, so the circuit design and engineering solutions provide round-the-clock operation 24 hours a day and 7 days a week, while household TVs are designed to work within 6 hours a day.