JPS6252588A - Lead mounting of display panel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for attaching leads to a display panel such as a liquid crystal panel or an EL panel.

Conventional technology The conventional method will be explained using an example of a liquid crystal panel.

The connection between the liquid crystal panel and the external circuit was made as shown in FIG. In Fig. 3, 31 is a glass plate A
, 32 is a glass plate B, 33 is a conductor wiring, 34 is a sealing resin, 35 is an external circuit board, 36 is a lead, 37 is an anisotropic conductive rubber, and s a A and 3 s B each indicate a pressing direction. In the conventional method, the conductor wiring 33 of the liquid crystal panel composed of 31 to 34 and the external circuit glue 36 indicated by 36 to 36 are overlapped via an anisotropic conductive rubber 37, and the glass plate 31 Upper conductor wiring 33 and external circuit board 3
After aligning the leads 36 on the conductor wiring 33 and the leads 36 on the wire 6, mechanical pressure was applied from above and below to electrically connect the conductor wiring 33 and the leads 36. The anisotropic conductive rubber 37 is a member that is electrically conductive only in the direction in which it is pressurized. In addition, the conductor wiring 33 is formed of a material that can be soldered at the end of the conductor wiring 33, that is, around the glass plate 31, and the lead 3 is attached to that part.
A method of soldering 6 has also been attempted.

Although the explanation is omitted, the leads can be connected in the same way for the EL panel.

Problems to be Solved by the Invention In the prior art example shown in FIG. Could not connect. Further, in the method of soldering the leads 36 to the conductor wiring 33 extending to the periphery of the glass plate 31, the process is very complicated because the leads are arranged on a plane and soldered.

Means for Solving the Problem In order to solve this problem, the present invention forms a groove in the side surface of a glass substrate and embeds a lead in the groove. The panels are stacked one on top of the other and grooves are formed on the sides of the panels.

Function: With the above structure, grooves can be formed on the side surfaces of the display panel with high precision and efficiency.Also, since the display panel and spacers are alternately overlapped when forming the grooves, the final In this case, the length of the lead is automatically determined by the spacer.

Example Embodiments of the present invention will be described below with reference to the drawings.

1A to 1D are process step diagrams showing a method for attaching leads to a display panel according to an embodiment of the present invention, and FIG.
-C is a diagram of only the display panel viewed diagonally from above. In Figure 2, the conductor wiring on the display panel is shown at the top, but the leads can be connected in exactly the same way even if the conductor wiring is formed on the inner surface sandwiched between two glass plates. .

In FIG. 1, 1A and 1B are display panels in which external lead connection electrode terminals extend to the periphery;
A and 2B are spacers, 3 is a groove, 4 is a thin wire, 5 is a lead, and 6 is a connecting portion. As shown in FIG. 1A, display panels 1A and 1B and spacers 2A and 2B are stacked alternately. At this time, the thickness of the spacers 2A and 2B is determined in consideration of the length of the leads to be left in the end. Next, Figure 1B
As shown in FIG. 2, grooves 3 are formed on the side surfaces of display panels 1A and 1B at positions corresponding to external lead connection electrode terminals. This groove 3 can be easily formed by using, for example, a dicing tool. In addition, the groove width and pitch are at least 60
It is easy to process to a micron size. After inserting a thin wire 4 having at least a conductive surface into the groove 3 as shown in FIG. Good. Thereafter, the thin wires 4 are cut at the boundaries between the spacers 2A, 2B and the display panels 1A, 1B, thereby completing the lead attachment as shown in the first diagram. In this case, the conductor wiring of the display panels 1A and 1B may be formed on the surface or between two glass plates. FIG. 2 is a view of the display panel in which the conductor wiring 6 is formed on the surface of the display panel 10, viewed diagonally from above.

Effects of the Invention As described above, according to the present invention, not only can grooves be easily and accurately formed on the side surface of a display panel, but also the leads can be attached all at once, and the length of the leads can be determined automatically. You can get the effect of being able to do it.

[Brief explanation of the drawing]

FIGS. 1A and 1D are cross-sectional views showing a method for attaching leads to a display panel according to an embodiment of the present invention, a view of the example of the second hakama diameter 5 shown in FIG. It is a sectional view showing a connection method. 1A, 1] 3...Display panel, 2A, 2B...
...Spacer, 3...Groove, 4...
・Thin wire, 6...Lead. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (1)

[Claims] After alternately stacking spacers and display panels in which electrode terminals for external lead connection are formed extending to the periphery thereof, a step of forming grooves on the side surfaces of the stacked display panels, and at least forming grooves in the grooves. A method for attaching leads to a display panel, which comprises the steps of inserting thin wires whose surfaces are conductive and fixing them with conductive adhesive, and cutting the leads at predetermined positions and removing spacers.