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问与答

一. LCM+电阻tp移位问题的设计

一. Shift issue about LCM+ resistive touch panel  

1. 案例:Tf17713a/26010a等项目

     1. Case: Tf17713a/26010a and other projects.

2. 现象:Tp向封口方向移动且在fpc方向会向上方翘起

     2. Phenomenon: Tp move toward the sealing direction and tilt upwards in the fpc direction.

3. 原因:Tp的fpc在弯折时有很强的推力,tp上的双面胶长时间受力且受环境的影响双面胶粘性减弱,导致tp移位超出背光边缘。

     3. Reason: Tp fpc has strong thrust when bending, the double-sided adhesive on the tp      weakens after long time stress and affected by the environment, resulting in tp shift beyond the    backlight edge.
    
4. 建议:

    4. Suggestions:
    1.背光边缘尽量设计较宽,使tp沉入胶框内,防止tp移位
    1.The backlight should be as wide as possible so that the tp sinks into the frame to prevent the tp shift.

    2.增加下铁框,设计铁框耳朵升高,档住tp不移位

     2. Increase the lower iron frame and design the iron frame ear elevation to prevent the tp shift.

     3.加强双面胶的粘性以及粘贴面积(背光边尽量设计宽一点)

     3. Increase the stickiness and paste area of the double-sided adhesive tape (the width of the back edge be as  wide as possible).

      4.在tp的fpc方向增加0.05mm的黄色绝缘胶纸困绑到背光上

      4.add 0.05mm yellow tape to the backlight in tp's fpc direction.

       5.保存环境常温

       5. Storage: Under normal temperature.

       6.生产出货后1-5个月内尽量上线

       6.try to put on production within 1-5 months after producing and shipping.