[求助] SJ30的顯示屏和電池

請問各位大俠：
[$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp]在索尼香港網站上關於SJ30的廣告中Comparision http://www.sonystyle.com.hk/clie/app/sj30/index.jsp  一項所列的輿NR、T系列對比表格中，在描述其LCD時，NR及T系列均用Reflective TFT colour display with back lights,而SJ30則用TFT colour display with back light；在Battery一項NR及T系列用Lithium-ion polymer rechargeable battery ，而SJ30則用Lithium-ion rechargeable battery，請問Reflective TFT 與TFT ，Lithium-ion polymer 與 Lithium-ion 有什[$#40637]不同？SJ30是否因採用了這些部件而降低了成本。
[$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp][$nbsp]多謝！！！

matika

lithium polymer is thinner and more expensive than lithium-ion.
  
reflective TFT LCD looks good under sun even when back light is off.  
TFT looks terrible under sun light.