ST7669V
7.10.3 Chip Attachment Detection (Reserved)
Sleep Out-command is a trigger for an internal function of the display module, which indicates, if bump side of IC is
attached to LCM glass ITO or not.
There is inverted (= increased by 1) a bit, which is defined in command “Read Display Self-Diagnostic Result”
(RDDSDR). The used bit of this command is D5. If IC is not attached to the circuit route of the flex or display glass, this bit
(D5) is not inverted (= not increased by 1).
There are connected together 2 bumps via route of ITO on 4 corners of IC. TLBI connects to TLBO; TLUI connects to
TLUO; TRUI connects to TRUO; TRBI connects to TRBO.
7.10.4 LCM Glass Detection (Reserved)
Sleep Out-command is a trigger for an internal function of the display module, which indicates, if the display glass of
the display module is broken or not.
There is inverted (= increased by 1) a bit, which is defined in command “Read Display Self-Diagnostic Result (0Fh)”
(= RDDSDR).The used bit of this command is D4. If this display glass is broken, this bit (D4) is not inverted (= not
increased by 1).
The following figure is a reference of how this glass break detection can be implemented. For example, there is
connected together 2 bumps(TGI and TGO) via route of ITO. This route of ITO is the nearest route of the edge of the
display glass
.
Active area of the display
glass
TRUI-TRUO
TLUI-TLUO
TRBI-TRBO
TLBI-TLBO
TGI
TGO
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6/4/2008
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