JPH05119326A - Liquid crystal display element - Google Patents

Abstract

PURPOSE:To improve the accuracy of a panel gap by adding a sealing material to the peripheral part of panel substrates and printing the sealing material to the regions exclusive of picture element electrodes as well at the time of superposing a pair of panel substrates on each other. CONSTITUTION:The panel substrate formed with active element arrays and the panel substrate formed with color filters and common electrode are superposed on each other while maintaining a prescribed spacing and are adhered by the sealing material 3 in the peripheral part of the substrates. A liquid crystal is packed into the spacing from an injection port 5. The shunt cutting of the outside frame of the panel substrates is executed in order to take out leader terminals after infection of the liquid crystal. The printing position of the sealing material is usually taken in the peripheral part of the panel substrates in order to facilitate shunt cutting and, therefore, the distance between the display surface and the printing position of the sealing material increases. The sealing material 4 is also printed on the just outer side of the display surface 1 in addition to the printing of the sealing material 3 in the peripheral part of the panel. Then, the accuracy of the gap on the display surface is improved and the high-brightness screen display is obtd.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device,
In particular, the present invention relates to a liquid crystal display device characterized by improving gap accuracy.

[0002]

2. Description of the Related Art Liquid crystal displays are widely used for watches, word processors, etc., because of their thinness and low power consumption. Among them, a so-called active matrix driving liquid crystal display that drives liquid crystal by an active element such as a thin film transistor or a thin film diode provides a clear and high-contrast display, while a built-in RGB color filter enables full color display. CRT
It is also attracting attention as a substitute for displays.

An overall view of a conventional liquid crystal display device is shown in FIG. A liquid crystal display has a structure in which a panel substrate on which an active element array is formed and a panel substrate on which a color filter and a common electrode are formed are overlapped with a sealant 3 at a peripheral portion of the substrate, and liquid crystal is injected in the gap. is doing. In the figure, 1 is a display surface, 2 is a terminal electrode, 3 is a sealant, and 5 is an injection port.

[0004]

In the conventional liquid crystal display element, since the seal adhesive is printed on the peripheral portion of the panel substrate, the gap accuracy in the display surface is lowered, and it is impossible to obtain a screen display with high saturation. There was a flaw.

[0005]

According to the present invention, a panel substrate on which each pixel electrode and a driving element array for driving the pixel electrode are formed, and a color filter array and a common electrode are formed corresponding to the pixel electrode. In a liquid crystal display element that is made by stacking a panel substrate with a sealing adhesive,
By printing a seal adhesive on a region other than the pixel electrode, the gap accuracy of the liquid crystal display device is improved and a screen display with high saturation is obtained.

[0006]

The present invention will be described below with reference to the drawings. FIG. 1 is a liquid crystal display device showing a first embodiment of the present invention. The panel substrate on which the active element array is formed and the panel substrate on which the color filter and the common electrode are formed are overlapped with each other while keeping a predetermined gap, and the peripheral portion of the substrate is bonded with the sealant 3, and the liquid crystal is placed in the gap. Inlet 5
Fill from. After injecting the liquid crystal, shunt cutting of the outer frame of the panel substrate is performed to take out the lead terminal. In order to facilitate shunt cutting, the printing position of the sealant is usually set on the peripheral portion of the panel substrate. Therefore, the distance between the display surface and the printing position of the sealant becomes long, and the reliability of the gap thickness in the display surface deteriorates.

In the case of this embodiment, in addition to the printing of the sealing agent 3 on the peripheral portion of the panel, the printing of the sealing agent 4 is also performed just outside the display surface 1. Therefore, in the liquid crystal display element of the present embodiment, it is possible to improve the gap accuracy of the display surface and obtain a screen display with high saturation.

FIG. 2 is a plan view showing a second embodiment of the present invention, showing an enlarged pixel portion. In this embodiment, the sealant 6 is printed on the area other than the pixel electrode 7 within the display surface, particularly on the wiring 8. In this case, the gap accuracy of the display surface is further improved.

The results of the comparison between the conventional technique and the technique of the present invention are summarized in Table 1 below.

[0010]

[Table 1]

From this table, it can be seen that according to the present invention, the gap accuracy is much better than that of the prior art.

[0012]

As described above, the present invention has the effect of improving the panel gap accuracy by printing the sealant not only on the peripheral portion of the panel substrate but also on the regions other than the pixel electrodes.

[Brief description of drawings]

FIG. 1 is a plan view showing a first embodiment of the present invention.

FIG. 2 is a plan view showing a second embodiment of the present invention.

FIG. 3 is a plan view of a conventional example.

[Explanation of symbols]

 1 Display Surface 2 Terminal Electrode 3,4,6 Sealant 5 Injection Port 7 Pixel Electrode 8 Wiring

Claims (1)

[Claims] 1. A panel substrate having pixel electrodes and a driving element array for driving the pixel electrodes formed on one electrode substrate, and a color filter array corresponding to the pixel electrodes on a counter substrate. In a liquid crystal display element in which a panel substrate on which a common electrode is formed is adhered with a sealant while keeping a predetermined gap, and the gap is filled with liquid crystal, not only in the peripheral portion but also in regions other than the pixel electrode. A liquid crystal display element characterized in that a sealing agent is also provided.