Method for connecting flexible printed circuit board with liquid crystal display step surface
A liquid crystal display, flexible printing technology, applied in the direction of instruments, nonlinear optics, optics, etc., can solve the problems of breaking, not being systematic enough, not resistant to bending, etc.
Active Publication Date: 2012-07-04
SHENZHEN SUCCESS ELECTRONICS LTD
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Problems solved by technology
[0006] (1) After hot pressing, the FPC gold fingers are exposed and are not resistant to bending
[0007] (2) FPC material problem
[0008] (3) The first-line glue has little reinforcing effect, and it will cause breakage after bending when the customer installs the machine
[0012] The above methods in this field have a certain effect on improving the fracture of FPC gold fingers, but they are not systematic and thorough enough. These measures have not completely eliminated this problem
Method used
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[0039] Such as figure 1 As shown, 1 is (FPC PI layer), 2 is the golden finger, and 3 is the gap distance between 1 and LCD. The gold finger portion of the LCD step surface is not covered by a PI (polyimide film) layer, so that the FPC gold finger 2 is exposed near the edge of the LCD, causing the FPC gold finger to break during the FPC bending process.
[0040] Such as figure 2 As shown, 4 is the blank area between the LCDITO (indium tin oxide conductive film) pin and the edge of the LCD step surface;
[0041] A method for connecting a flexible printed circuit board to a step surface of a liquid crystal display, the steps of which are as follows:
[0042] Step 1, adding part of the PI (polyimide film) layer 1 covering layer on the golden finger 2 on the LCD step surface;
[0043] Step 2, LCD design requires that its ITO (indium tin oxide conductive film) pins leave a blank area 4 from the edge of the LCD step surface, and the blank area 4 left on the edge of the LCD step s...
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The invention discloses a method for connecting a flexible printed circuit board with a liquid crystal display step surface. An exposed golden finger part contacted with an edge of the LCD step surface is covered and protected by a PI layer. The method comprises the steps that: 1, a part of the PI layer covering layer is increased on the golden finger of the LCD step surface; 2, the LCD design requires that a blank space is reserved between an ITO pin of the LCD and the edge of the LCD step surface; and 3, the FPC and the LCD alignment requires that when a lateral mark of the FPC golden finger is aligned, the width of the FPC PI layer stretches into the LCD is narrower than that of the reserved blank space of the LCD. The connecting method is applied to the process of manufacturing LCD panels.
Description
technical field [0001] The invention relates to the technical field of printed circuit connection, in particular to a method for connecting a flexible printed circuit board and a step surface of a liquid crystal display. Background technique [0002] In electronic devices in recent years, flexible printed circuit boards (FPC) are widely used to connect and install in portable information devices. The main representatives of these portable electronic devices are DVC (digital video camera), mobile phone, PDA (personal digital assistant), Digital cameras, laptops, etc. [0003] FPC is an important part of the LCD screen. First of all, it not only plays the role of connecting with the internal circuit of LCD (Liquid Crystal Display), but also serves as a bridge connecting with the peripheral circuit of the device. However, in the process of manufacturing the LCD panel, the gold finger part at the connection between the FPC and the LCD is easily broken, resulting in undesired ph...
Claims
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IPC IPC(8): G02F1/13
Inventor 杨顺林李江王旭
Owner SHENZHEN SUCCESS ELECTRONICS LTD