Deep analysis based on logic board

The role of the logic board in the LCD TV is comparable to that of the CRT, but there is a fundamental difference. The logic board is not a pure signal amplifier. The input is an LVDS format signal, not RGB. The LVDS image data input signal sent by the digital board (the input signal includes three types of signals: RGB data signal, clock signal and control signal) is processed by the logic board, converted into an LVDS signal capable of driving the liquid crystal screen, and then directly sent to the liquid crystal. Screen LVDS receiver chip. The processing of the shift register stores the image data signal and the clock signal into a control signal recognizable by the screen, and the MOSFET of the row and column signal RSDS controls the operation of the MOSFET to control the distortion of the liquid crystal molecules. Drive the LCD to display the image. The logic board is a component with software and intrinsic programs. The dedicated module FLASH with built-in shift registers (horizontal and vertical shift) cannot be changed even by the manufacturer. The logic board is mainly divided into a dedicated logic board and a general logic board.

The dedicated logic board refers to the logic board of the screen manufacturer's original factory. For example, BOE, Huaxing Optoelectronics, AUO, Chi Mei, LG, Samsung, Sharp, etc. all have their own original logic board.

With the development of technology, the specialized division of labor has become more and more detailed. These screen production plants have gradually abandoned the production of logic boards, and have been provided by professional logic board manufacturers. This is the general logic board. Of course, the general logic board is not a logic board for all screens, but the applicability provided by third-party logic board manufacturers will be more extensive. After the logic board is broken, it needs to be replaced or repaired to find the source more conveniently.

The foreign manufacturer Diligent recently introduced a dynamic logic board that simplifies the functionality of the microcontroller into an easy-to-use module, adding another set of components to their peripheral module (Pmod) product line: 410-341 multi-touch display System (MTDS), 410-342 Solid State Relay (SSR) electronic switches and 410-345 video graphics array (VGA). Flexible Input/Output Interface Component The Peripheral Module family combines the robustness of Diligent's programmable logic boards with the versatility of interchangeable sensors, user displays, signal inputs, and actuators. With their unique 6-pin, 8-pin and 12-pin interchangeable connectors, you can design and implement any number of useful functions for your control system.

The 410-341 is a 2.8” capacitive touch screen display similar to that used in most smartphone and tablet technologies. The 341 supports two-finger multi-touch with a 6-pin peripheral module interface and a small but powerful display. The onboard graphics microprocessor is a powerful tool for user displays and inputs. One of the key features of the 341 is integrated firmware and is compatible with Diligent's associated display library. It allows you to do almost no extra coding. Create a simple and efficient visual interface.

See related products

410-341

Digilent touch screen controller view

The 410-342 is a solid-state relay switch that uses solid-state semiconductors and their ability to transfer electrons in confined spaces to replace larger-sized electromechanical relays (which are extremely demanding on moving parts) for controlling input/output. The 342 combines the compact size of a solid state relay with the convenience of a universal I/O switch and a 6-pin interface for the peripheral module. In a miniature package size (1.7" x 0.8"), your system is extremely powerful. effect.

See related products

410-342

Digilent Solid State Relays View

The 410-345 is a VGA interface that can be used to communicate with the outside world on the Diligent logic board and display on most standard displays and TVs. The 345 can display 12-bit RGB444 color depth and has a pixel refresh rate of up to 150MHz through a 12-pin peripheral module interface.

See related products

410-345

Digilent dedicated interface view

By adding these new products to the peripheral module product line, Diligent has enhanced the capabilities of the increasingly general purpose logic board system, and their convertible components make the development and development of logic systems a breeze.

See related products

410-296

Digilent Embedded System Development Boards and Kits View