How to desing a lcd controller?

[kingkang]

Hi

How to desing a lcd controller?

The controller should support STN and TFT mode!

Is there any free cores or refenrence?

Thanks

 

[realtek]

>>Is there any free cores or refenrence??

I don't think so.
I suggest you can reference Hitachi or Epson
LCD controller DataSheet first

The Key point is CSTN Driver , Controller is easy to implement and
can use FPGA do function test before tapeout
Of course some special function such as 2D.... need some skills and algorithm theory.

 

[omara007]

try this link for LCD Data Sheets & Specifications:
**broken link removed**
it's really good ..

Also you can check the LCD driver open-source design in OpenCores, in this link:
**broken link removed**

Enjoy 8)

 

[ttspice]

You have to specify your application first, for example, which size of panel such as VGA, XGA...and what kind of input sources, such as DVI or VGA...you like to support with your LCD controller.

there are some major blocks of a LCD controller:

1. capture unit for various input source.
2. frame buffer to store the tempory image or convert frame rate.
3. scaler to zoom in/out image size.
4. OSD.
5. display unit to combine various source and generate signals for panel.

I just attached some chip spec. here, hopefully it can help.

 

[kingkang]

I just want to implent an lcd controller as what is in S3C2410(ARM9) that supports stn and tft.
I know the VGA standard.I think the opencores vga_lcd controller may be helpful.But do not know other standard as low resolution.Any advice?
thanks

 

[hgby2209]

I want to design Character-LCD's driving circuit, I have application spec. and know how to design it. But I want to know why I control com & segment 's voltage level as spec. say can turn on or turn off LCD.

Is there any book descrbing about that ?

 

[pci1000]

I am a digital designer , but not family with lcd.
As you mentioned, should i start to study from
the monitor system or other area?
I know there are some useful data on the opencore
website

 

[omara007]

start with 7-segment displays .. and their interface .. then continue to the concept of LCDs .. also their drivers .. and try looking into one of the famous LCD datasheets like Hitachi .. finally u can have a look to the LCD stuff in opencores.

 

[omiga]

Can bt to divided to thest module as follows:
Registers, display_interface , line_buffer,
main_ctrl,cursor_logic,dma_blocketc

 

[zyphor]

which process should be used in LCD driver chip?

 

[zcg]

You can refer epson's lcd controller(such as S1D13714,or former product 1375/1376). Their tech in this field is really a leader position.