JPS599634A - Liquid crystal display device - Google Patents

Abstract

PURPOSE:To repair the breaking of wiring provided in a liquid crystal device as if a normal signal were inputted by using a specific wiring board on which plural lines of wiring are arranged each longitudinally and laterally. CONSTITUTION:Wiring 13 in a longitudinal axis direction and wiring 14 in a lateral axis direction are formed on the front and rear surfaces, respectively, and the wiring 14 on the rear surface is led out through a through-hole 16 to connect respective lines of the wiring to pads 15 provided at the circumferential part on the front surface of the substrate, forming the wiring board. This wiring board is used and, for example, if the breaking of the longitudinal-axis wiring 3 occurs at a position 8, said substrate 12 is stacked on the reflecting plate of a device 5 to connect pads 9 of the device 5 formed on the extension of the wiring 3 to the pads 15 of the substrate 12 and pads 23 of the device 5 to pads 24 of the substrate 12 similarly, thereby inputting a normal signal from a driver IC1 to the device 5.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for correcting a disconnection in a wiring line of a liquid crystal display device tlt.

Liquid crystal display devices are light-receiving display devices that do not cause eye strain even when viewed for long periods of time, and have low power consumption, making them suitable for use in games, wristwatches, ML consoles, personal computers, etc. Further, applied research for use as a television receiver is underway. Recently, as the display answer ti has increased, the size of the display device itself has increased.
Alternatively, for image display, there is a trend to improve display quality by reducing pixel size.

Liquid crystal display devices can be broadly divided into those that have a built-in switching element corresponding to each pixel within the device, and drive pixel electrodes by turning the switching element on and off in response to input signals from a driver IC. There is a method of directly driving the pixel electrode with an input signal from the driver IT.

The former method is called the active matrix method, and the latter method is called the multiplex IJ link method.

Although the correction of broken lines according to the present invention is effective in any of the above cases, the contents of the present invention will be explained below regarding the active material (IJ socks) liquid crystal display device.

Generally, in an active matrix type display device, as shown in FIG. After that, human power is applied to the switching element B of each pixel, and the pixel electrode 7 is driven by turning on and off the switching element.

In such a structure, when increasing the size of the display device or reducing the pixel size, the wiring 6.4 in FIG. The probability of wire breakage increases. Also, as pixel sizes become smaller, it is necessary to reduce the line width of wiring.
This also has the problem of increasing the incidence of wire breakage.

On the other hand, conventionally, in order to correct the disconnection point 8 in FIG.
The method used was to connect it to a similar pad 11.

This is a method of correcting by inputting the most approximate signal to the regular manual input (IT), but in reality, the part where the approximate signal is input manually will be displayed with twice the pixel pitch,
There remains a sense of incongruity with the surrounding display state.

The present invention eliminates all the drawbacks of the above-mentioned prior art, corrects the line breakage that occurred during the manufacturing process of the display device, and improves the 1st floor of the display device!
This improves manufacturing yield.

The present invention will be described in detail below based on an actual Wr example.

FIG. 2 shows a 2WJ used for modifying a display device according to the present invention.
This is a wiring board 12, and its structure includes wiring 16 in the vertical axis direction.
and wiring 14 in the horizontal axis direction are formed on the front and back surfaces, respectively.
The wiring 14 formed on the back surface is connected to the front surface through a through-hole hole 16, and both the wiring in the vertical axis direction and the wiring in the horizontal axis direction are connected to a pad 15 formed on the periphery of the substrate 12.

FIG. 6 shows an embodiment of the invention in which the substrate 12 according to FIG. 2 and the display device 15 to be modified are combined in a superimposed manner,
When there is a break #1iItIh point 8 in the vertical axis wiring 3 in the display device, as shown in the cross-sectional view in FIG. Place the substrate 12 on the reflective plate of the display device 6 which is connected to the reflective plate 22, and extend the wiring 3, 1-
The pad 9 formed on the board 12 is connected to the pad 15 on the board 12, and the input section 23 of the driver IC 1 to the display device 5 is connected to the pad 24, which is connected by the wiring between the pad 15 and the board 12. Therefore, it is possible to manually input a signal that should be normally input manually between the disconnection part 8 of the wiring 3 and the pad 9 instead of an approximate signal.

In this case, the wiring in the vertical and horizontal directions formed on the substrate 12 is selected from the same pitch to 60 times the IJ Nox wiring pitch depending on the degree of disconnection. , the shapes of the connection pads 15 and 24 on the substrate 12 are made large so that connection can be easily made.

As shown in ``2'' below, when a display device has a defect due to wire breakage, according to the correction method of the present invention, the adjacent approximation (g
Regardless of the number, regular signal manpower can be used, and manufacturing yields can be improved.

[Brief explanation of the drawing]

Figure 1...Active matrix display device Figure 2...Repair substrate Figure 3...Embodiment of the present invention Figure 4...Embodiment of the present invention Example (A-A in Figure 6)
'Cross-sectional view) 1... Driver IC in the vertical axis direction 2... Driver IC in the horizontal axis direction 3... Wiring in the vertical axis direction in the display device 4... Wiring in the horizontal axis direction in the display device 5.・Ma) IJ Nox type liquid crystal display device 6...
Switching element 7... Pixel electrode 8... Wiring breakage point 9... Pad 10 for correcting breakage in wiring 6... Retro connection wiring 11 for wiring 3... Pad 12 for correcting breakage in wiring 10. ...Correction board 13...Vertical axis direction wiring 14 of board 12...Horizontal axis direction wiring 15 of board 12...For connection of board 12 Through-4 connection hole 17...active matrix substrate 18...liquid crystal 19...soling agent 20 filled with liquid crystal...opposing glass plate 21...polarizing plate 22...reflecting plate 23...・・Person to display device a)) ノ: Nod 24 ・Connection band for board 12 ”2 Applicant tL Co., Ltd. Suwakasuosha Agent Patent Attorney Saito;, i's 1 Figure &fS 2 Figure

Claims (1)

[Claims] In a liquid crystal display device in which a liquid crystal is sealed between two glass plates with t++ element electrodes, a vertical line in the display device a is a path for applying a drive signal from the outside of the display device to the four pixel poles. In order to prevent wiring breaks in the axial and horizontal directions, a wiring board with J1≧ of J1≧, which is separately installed and divided into two layers in the narrow axis direction and the horizontal axis direction, is attached to the liquid crystal display device.
1. A liquid crystal display device characterized in that a disconnection is corrected by connecting a signal to be manually input to the wiring board via the wiring board.