SPFD54124B Drise, SPFD54124B Datasheet - Page 204

• Manufacturer Part Number: SPFD54124B
• Description: 396-Channel 6-Bit Source Driver
• Manufacturer: Drise

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7.15.3. Chip Attachment Detection
Sleep Out-command is a trigger for an internal function of the display module, which indicates, if a chip or chips (e.g. driver, etc.) of the
display module is/are attached to the circuit route of a flex foil or display glass ITO.
There is inverted (= increased by 1) a bit in command “Read Display Self- Diagnostic Result (0Fh)” (= RDDSDR) (The used bit of this
command is D5), if the chip or chips is/are attached to the circuit route of the flex or display glass. If this chip is or those chips are not
attached to the circuit route of the flex or display glass, this bit (D5) is not inverted (= increased by 1).
The following figure is for reference purposes; how this chip attachment can be implemented e.g. there are connected together 2 bumps via
route of ITO or the flex foil on 4 corners of the driver (chip).
The flow chart for this internal function is following:
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Proprietary & Confidential
between
Routing
bumps
Substrate of display glass
Bump
No
Sleep Out Mode
Checks, if chip is attached to
Through view of driver to
Sleep Out (11h)
Is chip attached to
Sleep In (10h)
D5 inverted
routes?
route
Yes
204
Sleep In Mode
SPFD54124B
between
Routing
bumps
Power on sequence
Preliminary
RDDSDR’s D5=0
Preliminary Version: 0.6
HW reset
SW reset
APR. 26, 2007