JPS61245185A - Liquid crystal panel structure - 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 [Industrial Application Field] The present invention relates to a liquid crystal display panel having a matrix wiring electrode that uses two upper and lower substrates to sandwich a liquid crystal layer.
This invention relates to means for compensating for defects in matrix wiring.

[Summary of the invention]

The present invention provides a liquid crystal display panel having IJ box-shaped wiring electrodes on one surface of the liquid crystal display panel.

By bonding a circuit board on which a wiring pattern is formed to connect parts facing or near a pair of electrode lead-out terminals formed on a liquid crystal display panel, defects in matrix wiring electrodes can be compensated for easily and at low cost. This makes it possible to save cost and space, and to improve the display electrode density of the liquid crystal display panel.

[Conventional technology]

Currently, liquid crystal display panels are used in various fields.
The range of its applications continues to expand.

An example is a liquid crystal television device that displays video images. Generally, a liquid crystal display panel used in a liquid crystal television set has a matrix-like electrode having a large number of wiring lines. This is true whether it is an active matrix in which a large number of transistors are arranged on a substrate constituting a liquid crystal display panel, or a simple matrix in which no active elements such as transistors are arranged.

FIG. 42 is a plan view of a main part of a conventional liquid crystal panel structure with some parts omitted. In Figure 2, 1 is the upper panel glass;
2 is the lower panel glass, 25 is the display electrode in the X-axis direction, 24
is the display electrode in the y-axis direction.

25 is an electrode lead-out terminal portion in the X-axis direction, 26 is an electrode lead-out terminal portion in the y-axis direction, 27 is an xi-direction driver board, 28 is a y-axis driver board, and 29 is an X-axis driver l.
0150 indicates a defect in the y-axis direction driver IC, and 6 indicates a defect in the display electrode.

Two driver outputs are connected to one display electrode, and two X-axis direction driver ICs or two ym-direction driver ICs transmit the signal to the display electrode at the same time. The system is designed to prevent transmission defects (line defects) from occurring.

[Problems and objectives that the invention attempts to solve] However,
With conventional technology, there were mounting problems such as connection between the electrode lead terminals and the driver board, and circuit scale considerations such as the number of driver IC outputs, so it was possible to increase the display electrode density of the liquid crystal display panel easily and at low cost. The problem was that it was difficult to obtain high resolution.

Therefore, an object of the present invention is to provide a display that can be performed easily, at low cost, and in a space-saving manner while complementing pole defects and improving display electrode density and S damage.

[Means for solving problems]

The liquid crystal panel structure of the present invention uses two upper and lower substrates made of inorganic or organic glass to sandwich a liquid crystal layer.
a On the display panel, -1! Display electrodes are arranged in a matrix in the liquid crystal display panel, the display electrodes have electrode lead-out terminals sf on at least one of the substrates, and the electrode lead-out terminal portions are arranged on opposite sides of the liquid crystal display panel. A circuit board is directly or indirectly bonded to one surface of the liquid crystal display panel, and wiring is connected to the circuit board to connect a portion facing or in the vicinity of the pair of electrode lead-out terminal portions. The pattern is characterized by at least one wire being distorted.

[Example of real power]

The present invention will be described in detail below based on practical examples.

1(a), 1(b), and 1(c) show the structure of a liquid crystal panel according to the present invention. FIG. 1(b) is a plan view of the main part of the t/'i liquid crystal panel structure, and FIG. 1(C) is a sectional view of the main part of FIG. 1(1)).

1 and 2 are panel crows that are substrates made of inorganic or organic glass that sandwich the liquid crystal layer 10, and! 711d
2 is the upper panel glass, and 2 is the lower panel glass. , 6 are wiring electrodes which are display electrodes arranged in a matrix in the liquid crystal display panel.

Reference numeral 415 indicates a correction pad 4 and a connection pad 5, which are electrode lead-out terminal portions. , 6 is a defective display electrode, and 7 is a repair board, which is a circuit board bonded to one side of the liquid crystal display panel, and is adhesively fixed to the lower panel glass via a reflective plate 11. , 8 is a wiring pattern on the corrected board which is a wiring pattern that connects the part facing or in the vicinity of the electrode lead-out terminal part, 9 is the wiring pattern on the corrected board or connection pad with aluminum wire and 1 - the wiring pattern on the positive board. conducts.

The connection pad connects the liquid crystal display panel drive circuit such as the driver board and the upper panel glass, and the liquid crystal display panel drive signal is transmitted to the display electrode via the connection pad and the liquid crystal display is performed. Normally the correction pad is not connected. Therefore, since the pitch of the connection pads is twice the pitch of the display electrodes, the driver board can be easily connected to the connection pads even if the display density is increased.

Furthermore, since the number of display electrodes is twice as many as the number of outputs of the driver 1a, the resolution can be easily improved.

Here, due to the defect 6 in the display electrode, the sixth wiring electrode 5
-a is disconnected, the correction pad 4-ao is inserted from the disconnection position.
A line defect occurs because no signal is transmitted to the wiring electrode of llll. Therefore, in order to compensate for the defect, conduction is established between the first connection pad 5-a and the first hot water stop pad 4-a using the wiring pattern on the repaired board that is glued to the lower panel glass via a reflector. It is sufficient if the signal is transmitted from the correction band side as well. Furthermore, according to the present invention, the above-described defect replenishment can be performed on the back side of the liquid crystal panel. Therefore, defects can be easily compensated for in a limited amount of space.

Note that wire bonding using a repair wire such as an aluminum wire is available as one means for electrically connecting the repair pads and connection pads to the wiring pattern of the repair board.

〔Effect of the invention〕

As described above, according to the present invention - matrix-like wiring! In a liquid crystal panel having a polarity, a wiring pattern is formed on one surface of the liquid crystal display panel to connect parts facing or near a pair of electrode lead-out terminal parts formed on the liquid crystal display panel.A structure for bonding a circuit board. This makes it possible to compensate for defects in matrix wiring electrodes easily, at low cost, and in a space-saving manner. It becomes possible to improve the polar sliding resistance and the degree of resolution.

[Brief explanation of the drawing]

Figure 1) is a plan view of the main part of the electrode structure of the liquid crystal panel of the present invention. FIG. 1 (1)) is a plan view of the main part of the liquid crystal panel structure of the present invention. FIG. 1(C) is a sectional view of the main part of FIG. 1<b). Figure 2 is a plan view of the conventional liquid crystal panel structure, 1...
- Upper panel glass 2... Lower panel glass 5... Wire electrode (3-a): 1st wiring electrode 4... Correction pad (4-a): 1 th repair pad 5... connection pad (5-a): a4i-th connection pad 6... defect 7... repair board 8... repair board Wiring pattern 9...
Aluminum wire 10...Liquid crystal layer 11...Reflector or higher

Claims (1)

[Claims] In a liquid crystal display panel in which a liquid crystal layer is sandwiched between two upper and lower substrates made of inorganic or organic glass, display electrodes are arranged in a matrix in the liquid crystal display panel, and the display electrodes are arranged on at least one of the substrates. a pair of electrode lead-out terminal parts are arranged on opposite sides of the liquid crystal display panel, a circuit board is directly or indirectly joined to one surface of the liquid crystal display panel, and a circuit board is connected to one surface of the liquid crystal display panel, and The liquid crystal panel structure is characterized in that at least one wiring pattern is wired to conduct the portions facing or in the vicinity of the pair of electrode lead-out terminal portions.