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Author Topic: LCD Manufacture and interface suggestion  (Read 1761 times)
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hacsx
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« on: March 20, 2013, 09:50:23 09:50 »

Hi All,
I am looking for a LCD about 3" with capacitive touch capability.
I was wondering if anyone have experience with various interface for LCD (RGB, LVDS, Parallel, ETC) can give me insights on what is easy to use and what is worth using from experience. 
Also If you can give me some manufacture of LCD that you worked with before would be great.  So far it is hard to find a good source for LCD.  I have only found NLT Technology, New Heaven, and LXD inc.  It is hard to find for a small size LCD.

Thank you
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kukumar
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« Reply #1 on: March 21, 2013, 08:38:07 20:38 »

I use:  3.2" Touch Screen TFT LCD with 16 bit parallel interface   Model: HY32D


   http://www.hotmcu.com/32-touch-screen-tft-lcd-with-16-bit-parallel-interface-p-36.html?cPath=6_16&zenid=6e9cq1h1jve9fe45grv728fu74


This display have Touch Panel- SPI interface

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Parmin
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« Reply #2 on: March 21, 2013, 11:29:01 23:29 »

Get the LCD from smart phones.
Depending on quantity, you could source direct from AliExpress.
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DreamCat
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« Reply #3 on: March 22, 2013, 11:11:06 11:11 »

the type of interface depends on your cpu, for low speed mcu, spi maybe best choice. but if there is special intereface for LCD, see the datasheet from manufacturers.
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hacsx
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« Reply #4 on: March 22, 2013, 06:06:31 18:06 »

Sorry I should have thought ahead and mention what processor i was looking at.

I am currently working with the cortex A8 and A9. 
A8 is the TI sitarra AM3335 -  Not really sure about this.
A9 is the Freescale i.MX 6solo - This one has RGB and LVDS.

Also I was looking for Capacitive touch too.  It is hard to find one in small size.
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Gallymimu
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« Reply #5 on: March 23, 2013, 03:19:17 03:19 »

sadly most good capacitive touch displays aren't available in small or even medium quantities.  i.e. if you are hoping to get something like you have on your cell phone it's gonna be hard.
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bobcat1
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« Reply #6 on: March 23, 2013, 02:51:55 14:51 »

Hi

Most LCD software driver use to hold Image in UC memory - Whether you plan to use a commercial software for LCD screen design remember to have lot of RAM for the image.

All the best

Bobi
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hacsx
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« Reply #7 on: March 25, 2013, 08:58:11 20:58 »

I am running it on an android 4.0 platform.
I have tried with the resistive touch and it is so so horrible.
Would it be possible to get two separate part? like a screen and and a touchscreen and combine them?

I am new to LCD section.  I saw some small LCD but the price is $150 each which is too much.

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Parmin
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« Reply #8 on: March 25, 2013, 10:55:27 22:55 »

I dislike to repeat myself. Have you try AliExpress?
Do you even read my previous post?
Why do you keep whining?

2 minutes search gets me this

http://www.aliexpress.com/item/2-4inch-small-240x320-capacitive-LCD-touch-screen/761076924.html
and
http://www.aliexpress.com/item/3-5-inch-320x480-resolution-TFT-LCD-Capacitive-touch-screen/761102688.html

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pickit2
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« Reply #9 on: March 25, 2013, 11:33:01 23:33 »

And add to Parmin's post, Aliexpress withhold payment to supplier until your happy with bought item.
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hacsx
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« Reply #10 on: March 26, 2013, 01:59:22 01:59 »

Sorry if it sound like i am whining and making you repeat yourself.
I did look at the site.  I saw a bunch of chinese manufactures.

I was just trying to ask questions.
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Parmin
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« Reply #11 on: March 26, 2013, 10:51:44 22:51 »

I saw a bunch of chinese manufactures.

So?
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hacsx
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« Reply #12 on: March 27, 2013, 03:34:47 03:34 »

I will order sample from them to see the quality of the screen.
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