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DTO70BTFT-TS

Hi team, 

We are going to use DTO70BTFT-TS DISPLAYTECH LCD display, in this we have queries that all are listed below,

1.Is there any evaluation board is available to drive the tft display, If its available means, can you please suggest the manufacturer part no.

2. If suppose there is no any evaluation board to drive the tft display means, can please tell me how to generate VCOM, AVDD, VGH, VGL, VDD, LED forward voltages.

3. If we need to use LDO's to generate above voltages means how to achieve the timing sequence of power supply like mentioned in the display datasheet.

4. How to achieve backlight dimming adjustments, is there any separate evaluation board is there?

5. Do you have any product distribution centre in Japan?

We are waiting for your valuable response.

 

Replies

Suryo Haridadi's picture
Suryo Haridadi
January 2, 2020

Hi Sudharson,

Thank you for contacting us through the forum. 

We have authorized distributors that serves the market globally, with local offices in Japan. You can view the list here or you can also contact sales@displaytech-us.com for more information.

We do not have evaluation board to drive the DT070BTFT-TS.

Displaytech datasheet and Driver IC datasheet links are available on the website.
The Driver IC datasheet provides the detailed LVDS timing that you setup on your hardware.
Note: This is dumb glass (i.e. LVDS interface), so there is no example code, as this is customer hardware specific. The smaller displays are considered "smart glass" and have initialization code.

Timing values are found in section 11.2 page 44 (See 1024rgbx600) of the Source Driver Datasheet found on our website here:
https://www.displaytech-us.com/sites/default/files/driver-ic-data-sheet/fitipower-EK79007.pdf

 

Connections:
The DT070BTFT display has an LVDS interface.  The interface is a standard LVDS and is purely hardware connections.  This is unlike smaller displays (ILI9341) and RGB displays (3.5" and 4.3") where software configuration is required.
See the datasheet on the website which shows the "Interface Signals" in section 5.  In addition section 7 shows the "Electrical Specification" for the TFT Power Supply and Backlight Voltage.
Datasheet: http://www.displaytech-us.com/7-inch-ips-tft
We suggest making SELB jumper configurable on your board.

LCD Power:
The following is an example circuit for the LCD Power:
https://www.screencast.com/t/vauNApdvt

 

Backlight Example Circuit
https://www.screencast.com/t/DRbvL6mM0mu

Power Up Sequence in Datasheet
http://cdn.displaytech-us.com/sites/default/files/driver-ic-data-sheet/fitipower-EK79007.pdf
10.1. Power On/Off Sequence

DT070BTFT or DT070BTFT-HB Recommended 40 Pin Display Connector
Part No.: FH12S-40S-0.5SH

DT070BTFT STBYB & RESET
Please look at the source drive datasheet on our website.
http://cdn.displaytech-us.com/sites/default/files/driver-ic-data-sheet/fitipower-EK79007.pdf

Standby is active low. See below.
Reset is active low. See below.
https://www.screencast.com/t/AgDIPxnPYyB