CN205194301U

CN205194301U - LCM drives liquid crystal display systems

Info

Publication number: CN205194301U
Application number: CN201521030552.3U
Authority: CN
Inventors: 周群飞; 饶桥兵; 周辉
Original assignee: Lens Technology Changsha Co Ltd
Current assignee: Lens Technology Changsha Co Ltd
Priority date: 2015-12-11
Filing date: 2015-12-11
Publication date: 2016-04-27
Anticipated expiration: 2025-12-11

Abstract

The utility model provides a LCM drives liquid crystal display systems, including integrated in power module, ARM controller, FPGA module, MIPI bridge module and LED PWM driver module with on the PCB board, wherein, every module of power module and all the other is connected in order providing power, the ARM controller is connected with the FPGA module, and the FPGA module is connected with MIPI bridge module, and MIPI bridge module, LED PWM driver module all are connected with the LCM module. The utility model discloses a new scheme of speed is lighted in an improvement that provides to driving high -resolution 8Lane MIPI LCM.

Description

A kind of LCM drives liquid crystal display systems

Technical field

The utility model relates to the technical field of LCM liquid crystal drive display system, and especially, the LCM relating to a kind of small-medium size be used on the equipment such as mobile phone, panel computer, point reader, electronic dictionary, vehicle mounted guidance drives liquid crystal display systems.

Background technology

To compare glass, LCM (LCDModule, LCD assembly) be a kind of LCD product of more high integration, for small size LCD (LiquidCrystalDisplay, LCDs) show product, LCM can be connected with various microcontroller (such as single-chip microcomputer) more easily, and the application therefore in electronics manufacturing widely.

Along with the industry develop rapidly of LCDs, the resolution of display screen is more and more higher, also more and more higher to the hardware requirement of LCM drive system.But it is slow that current most of LCM drives liquid crystal display systems to light speed, and refresh rate and MIPI (MobileIndustryProcessorInterface, mobile Industry Processor Interface alliance) port number do not reach requirement.In order to meet the demand of electronics manufacturing test, a kind of improvement project of special needs, what meet sharpness screen lights testing requirement.

Utility model content

The utility model object is to provide a kind of LCM to drive liquid crystal display systems, with solve LCM drive liquid crystal display systems light speed slowly, the technical matters of refresh rate and MIPI port number.

For achieving the above object, the utility model provides a kind of LCM and drives liquid crystal display systems, comprise the supply module be integrated on same pcb board, ARM controller, FPGA module, MIPIBridge module and LEDPWMDriver module, wherein, supply module and all the other each model calling are to provide power, described ARM controller is connected with FPGA module, FPGA module and MIPIBridge model calling, and MIPIBridge module, LEDPWMDriver module are all connected with LCM module.

Preferably, driving mode transfer is export MIPIBridge module to after RGB drive singal by described FPGA module, and MIPIBridge module converts thereof into MIPI signal.

Preferably, described ARM controller and EEPROM module and RAM model calling, read the graph data stored in the formula coding and RAM module stored in EEPROM module and output to FPGA module.

Preferably, LCM driving liquid crystal display systems also comprises USB and turns UART interface module, turns UART interface module and is directly connected to PC, on-line debugging formula and burning firmware F/W by USB interface and USB.

Preferably, described FPGA module is by 24 bit address bus link control modules.

Preferably, described ARM controller comprises oscillatory circuit, reset circuit and serial communication circuit.

Preferably, the constant electric current of output is supplied to product by described LEDPWMDriver module.

The utility model has following beneficial effect:

New departure of speed is lighted in a kind of raising that the utility model proposes for driving high-resolution 8LaneMIPILCM, by ARM controller, FPGA module, MIPIBridge module and LEDPWMDriver module integration on same pcb board, driving mode transfer is export MIPIBridge module to after RGB drive singal by FPGA module, MIPIBridge module converts thereof into MIPI signal, change the annexation of signal conveyor module, thus improve the flow process of signal conveying, improve and light speed.

Except object described above, feature and advantage, the utility model also has other object, feature and advantage.Below with reference to figure, the utility model is described in further detail.

Accompanying drawing explanation

The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:

Fig. 1 is the functional module connection diagram of the utility model preferred embodiment;

Fig. 2 is the use anatomical connectivity schematic diagram of the utility model preferred embodiment.

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that the utility model can limit according to claim and cover is implemented.

See Fig. 1, Fig. 2, by reference to the accompanying drawings this patent is described in detail.

A, supply module: supply module provides direct supply to input modules, the electric current after switching on power is after capacitor filtering, and circuit stability reduced output voltage each road voltage, is supplied to modules respectively by each road voltage exported and uses;

B, control module: the ARM (AdvancedRISCMachines of control module, Reduced Instruction Set Computer microprocessor) controller is core controller, there is program and read controlling functions, comprise the serial communication circuit of multiple oscillatory circuit, reset circuit and U6 composition, master controller is by the driving of different bus modes, formula reading, signal retaking of a year or grade, control module;

C, FPGA (Field-ProgrammableGateArray, field programmable gate array) module: accept control module from EEPROM (ElectricallyErasableProgrammableRead-OnlyMemory by 24 bit address buses, EEPROM (Electrically Erasable Programmable Read Only Memo)) the driving formula that captures in module, mode transfer formula RGB drive singal will be driven, and synchronism output HSYNC (horizontalsynchronization, horizontal synchronization) and VSYNC (verticalsynchronization, vertical synchronization) scan clock signal,

D, MIPIBridge module: rgb signal is converted to MIPI protocol data form, convert thereof into MIPI signal after namely receiving RGB data;

E, light formula and graph data and store: controller reads graph data in formula coding and DDR3RAM to FPGA module process;

F, LEDPWMDriver (LightEmittingDiodePulse-WidthModulationDriver, the width modulation of light emitting diode drives) module: after control module assigns backlight enabled instruction, the constant electric current of output is supplied to product by LEDPWMDriver module;

G, UART module: when formula debugging and firmware F/W burning, PC can be directly connected to by USB, on-line debugging formula and burning.

After system electrification, power light is bright, and indication mechanism is powered normally.In the peripheral circuit of the master control IC all normal situation such as (reset circuit normally works, the normal starting of oscillation of crystal oscillator), normal work, read formula in EEPROM and RAM by controller to convert enabled instruction, the setup code of driving to FPGA module and light picture code, MIPIBridge module directly exports to the drive IC on LCM screen after converting MIPI format signal to after receiving signal.Drive IC carries out a series of initialization after receiving instruction, can start to drive liquid crystal to light LCM display screen, required picture all controls driving by master control IC and lights, after required picture all drives and has lighted, close screen according to electricity under the lower electric sequential needed for drive IC, complete LCM driving and light.

The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.

Claims

1. a LCM drives liquid crystal display systems, it is characterized in that, comprise the supply module be integrated on same pcb board, ARM controller, FPGA module, MIPIBridge module and LEDPWMDriver module, wherein, supply module and all the other each model calling are to provide power, described ARM controller is connected with FPGA module, FPGA module and MIPIBridge model calling, and MIPIBridge module, LEDPWMDriver module are all connected with LCM module.

2. LCM according to claim 1 drives liquid crystal display systems, and it is characterized in that, driving mode transfer is export MIPIBridge module to after RGB drive singal by described FPGA module, and MIPIBridge module converts thereof into MIPI signal.

3. LCM according to claim 1 drives liquid crystal display systems, it is characterized in that, described ARM controller and EEPROM module and RAM model calling, read the graph data stored in the formula coding and RAM module stored in EEPROM module and output to FPGA module.

4. LCM according to claim 1 drives liquid crystal display systems, it is characterized in that, also comprises USB and turn UART interface module, turn UART interface module be directly connected to PC by USB interface and USB, on-line debugging formula and burning firmware F/W.

5. LCM according to claim 1 drives liquid crystal display systems, it is characterized in that, described FPGA module is by 24 bit address bus link control modules.

6. LCM according to claim 1 drives liquid crystal display systems, and it is characterized in that, described ARM controller comprises oscillatory circuit, reset circuit and serial communication circuit.

7. LCM according to claim 1 drives liquid crystal display systems, it is characterized in that, the constant electric current of output is supplied to product by described LEDPWMDriver module.