Small and medium-sized LCD IC brand

IC brand
Full name popular abbreviation official Chinese name headquarters
MediaTek MTK MediaTek Taiwan
Princeton PTC Pucheng Technology Taiwan
Richtek / asaki Taiwan
Sunplus / Lingyang Taiwan
APEC Maoda Taiwan
Eutech Dexin Taiwan
Realtek Ruiyu Taiwan
Winbond Huabang Taiwan
Via via Taiwan
Japanese semiconductor manufacturers
Epson Epson Japan
Fujitsu Fujitsu Japan
NEC Japan
OKI Chong electronics Japan
Rohm Roma Japan
Renesas Japan
Sharp Japan
Seiko NPC Seiko Japan
Yamaha Yamaha Japan
Toshiba Japan
Ricoh Ricoh Japan
Terex Japan
Mitsubishi Japan
Sanyo Japan
AKM / Japan

Korean semiconductor manufacturer
Samsung Korea
CoreLogic / Korea
Hynix Hynix Korea
LG LG Korea
Atlab / Korea
How to identify the original IC and scattered new IC? In the process of R & D or learning, you often need to buy a small number of films. Although the quality of the agent is good, the quantity is too small. Generally, you are unwilling to take care of you. Unless there is stock and you pick it up at your door, if you order futures, you may not reach the minimum order quantity, and the delivery time may be too long for you to accept. It is also not easy to apply for samples, At this time, you can only look for goods in the electronic market. The goods in the market are mixed. You should learn to distinguish between good and bad
1. Remove the machine piece
These chips are classified after being removed from the circuit board. The pins obviously have traces of soldering, glittering, and the pin spacing is obviously different. There are differences in the size, font and depth of printed words and patterns on the surface. The production batch number is generally different, and the origin identification on the back is relatively miscellaneous
2. Grinding disc
These chips are very similar to the whole new chip. There is basically no obvious difference in the size, font and depth of the printed words and patterns on the surface, and the batch number is the same. However, if you carefully observe the chip surface, you will find many small parallel scratches, and the origin identification on the back is also different. The pins are generally not shiny, but matte, with traces of oxidation, and the pin spacing is relatively consistent. Generally speaking, the polished disc is mainly a new one that has been put too long, or the batch number is relatively miscellaneous. In order to sell well, it is polished and printed into a unified and relatively new production batch number
3. San Xin Pian
There are differences in the size, font and depth of printed words and patterns on the surface of these chips. The production batch number is generally different. The origin identification on the back is relatively miscellaneous, but the pins have no traces of use, but there are traces of oxidation. Generally speaking, this kind of chips are sold by traders who pack unused chips collected from various routes in one tube
4. Brand new film
The printed words and patterns on the surface of these chips have the same size, font, depth, production batch number, origin identification on the back, the pins are very neat, there will be a bright hate * in the middle of the matte surface, and the tube words loaded with the chips are very new, transparent and non yellowing
5. A suggestion
Among the first three chips, 1 has the worst reliability, 3 has the second, and 2 has better reliability. In addition, try to buy new chips during the programmable period. Class 1, 2 and 3 programmable devices have a very high failure rate