Classification and development status of liquid crystal display modules

With its micro-power consumption, small size, rich display content, ultra-thin and light-weight many advantages, liquid crystal displays are more and more widely used in pocket meters and low-power application systems. Next, Xingyuhe Electronics will introduce to netizens the classification of liquid crystal display modules, I hope netizens like it. The classification of liquid crystal display modules 1. Pen segment liquid crystal module The pen segment liquid crystal module is a functional component assembled from a segment liquid crystal display device and a dedicated integrated circuit, which can only display numbers and some identification symbols. Segment LCD devices are mostly used in portable and pocket-sized devices. Due to the small size of some devices, the display part should not be designed as a separate component as much as possible. Even if a separate display component is required in some application fields, it should also have some information receiving, processing, and processing functions in addition to the display function. Functions such as storage and delivery are welcomed by the market because they have a certain general and specific function. The common digital display liquid crystal display modules are as follows. 1. Counting module This is a counting display part assembled by a seven-segment liquid crystal display device with different digits, a decoding driver, or a counter. It has the functions of recording, processing, and displaying numbers. At present, the main products that can be seen on the market in our country are the unit liquid crystal display device display module driven by the CD4055 decoder driver, as well as the ICM72ll, ICM7231, ICM7232, CDl4543, UPDl45001, HD44100 and other integrated circuits and the corresponding supporting liquid crystal display devices. 4-bit, 6-bit, 8-bit, 10-bit, 12-bit, 16-bit counting module. 2. Metering module The metering module is a module assembled with a multi-segment liquid crystal display device and an integrated circuit chip with decoding, driving, counting, and A/D conversion functions. Because the integrated circuit used has A/D conversion function, it can convert the input analog electric signal into digital quantity and display it. We know that any physical quantity, even chemical quantity (such as pH, etc.) can be converted into analog electricity, so as long as it is equipped with a certain sensor, this module can realize any quantity and display, and it is very convenient to use. The integrated circuit models used by the metering module mainly include ICL7106, ICL7116, ICL7126, ICL7136, ICL7135, ICL7129, etc. The functions and characteristics of these integrated circuits determine the functions and characteristics of the metering module. As a metrological product, metrological appraisal must be carried out in accordance with regulations. Approved by the measurement department, a measurement certificate is affixed to the product. 3. Timing module The timing module uses liquid crystal display devices for the longest time history. Assembling a liquid crystal display device with a timing integrated circuit is a fully functional timer. Because it does not have the shell of a finished clock, it is called a timing module. Although the timing module has a wide range of uses, it is difficult to buy a general and standard timing module on the market. You can only buy or order a suitable watch movement from the electronic clock manufacturer. Although the timing module and the counting module are similar in appearance, But their display modes are different. The numbers displayed by the timing module are composed of two digits in groups of two digits. Each digit of the counting module is arranged in a row. Since many timing modules also have timing and control functions, this type of module can be widely installed on some power-up and equipment, such as radio cassette recorders, CD players, microwave ovens, rice cookers and other electrical appliances. 2. Character dot matrix liquid crystal module The character dot matrix liquid crystal module is assembled by a dot matrix character liquid crystal display device and dedicated row and column drivers, controllers and necessary connectors, structural parts, and can display numbers and Western characters. . This kind of dot matrix character module has a character generator, large display capacity and rich functions. Generally, this kind of module can display at least 8-bit 1 line or 16-bit 1 line or more characters. The dot matrix arrangement of this module is composed of a group of 5×7, 5×8 or 5×11 pixel dot matrix arrangements. Each group is 1 bit, there is a little space between each bit, and there is also a line space between each line, so graphics cannot be displayed. Generally, there is a character library CGROM with solidified 192 character fonts in the module control and the drive, and it also has a character library for users. Customize the random access memory CGRAM for special characters, allowing users to create 8 5×8 dot matrix characters. 3. Graphic dot matrix liquid crystal module Graphic dot matrix liquid crystal module is also a kind of dot matrix module, which is characterized by continuous arrangement of dot matrix pixels, and there is no space between rows and columns in the arrangement. Therefore, continuous and complete graphics can be displayed. Since it is also composed of X-Y matrix pixels, it can display characters in addition to graphics. There are mainly the following types: 1. Row and column drive type 2. Row and column drive-control type 3. Row and column control type LCD module development status Chinese LCD module manufacturers plan to continue the research and development of chips and backlight parts, It is a long-term goal to reduce production costs while improving product quality. The ultimate pursuit of higher contrast, wider viewing angle and wider temperature range. In addition, manufacturers are exploring a way to reduce energy consumption while not affecting display quality to meet the market needs of low-end products. In order to avoid intellectual property issues, most manufacturers' production systems have obtained security licenses and have launched patented products. Currently, some manufacturers provide patented 8-color field sequential color liquid crystal display modules and dot matrix field sequential LCD screenmodules. Other manufacturers have developed CSTN liquid crystal display modules for mobile phones, which can be clearly displayed even under direct sunlight. . Regarding the classification and development status of liquid crystal display modules, Xingyuhe Electronics has introduced to the majority of netizens here. Netizens who want to learn more about liquid crystal display modules may wish to pay attention to this website!

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