diff --git a/lcd_screen.md b/lcd_screen.md
index 45b396a..f677f36 100644
--- a/lcd_screen.md
+++ b/lcd_screen.md
@@ -12,4 +12,7 @@
 
 ### Block Diagram (from the lmg7410 not the Siena lmg7510)
 
-![blockdiagram from 7410](files/lmg7410blockdiagram.jpg)
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+![blockdiagram from 7410](files/lmg7410blockdiagram.jpg)
+
+ * As the LMG7510 is 240x160 it is suspected that IC1 and IC2 provide 80 lines each (to a total of 160) and then IC3 - IC5 provide 80 each
+ 
\ No newline at end of file