JPS6350694Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a dot matrix display device that performs display by selectively driving pixels arranged in a matrix.

Recently, so-called liquid crystal televisions, which display television images on dot matrix liquid crystal display devices, have been considered. The dot matrix display type liquid crystal display device used in this liquid crystal television is constructed as shown in FIG. That is, the liquid crystal cell 1 is formed by sealing a liquid crystal material 5 between a pair of electrode substrates 2 and 3 and a sealing part 4 which are arranged opposite to each other, and a polarizing plate 6 is disposed below the liquid crystal cell 1. In addition, a parting plate 7 in which a display window 7a for defining the display area of the liquid crystal cell 1 is opened is disposed on the upper surface of the liquid crystal cell 1, and connection terminals at the peripheral edge of the liquid crystal cell 1 are connected to the parting plate 7. covered by. In addition,
A connection terminal portion of the liquid crystal cell 1 is electrically connected to a circuit board 9 via an interconnector 8.

As shown in FIG. 2, the liquid crystal cell 1 is configured to perform matrix display by selectively driving a plurality of pixels 10 arranged in a matrix. When incorporating this liquid crystal cell 1 into a device case, there are varying degrees of
The installation position of the liquid crystal cell 1 is inevitably misaligned with respect to the partition plate 7 or the equipment case. As a result, the second
As shown in the figure, when the installation positions of the liquid crystal cell 1 and the parting plate 7 or the equipment case match, the display area A
If the setting position is misaligned, the display area B will appear, and a blank area (non-display area) will be created between the liquid crystal cell 1 and the parting plate 7 or the equipment case by the amount of the misalignment. It was hot.

This invention was made in view of the above circumstances, and its purpose is to provide a dot matrix display device that can be easily aligned with a parting plate to cover unnecessary parts of the display device or a display window of the case. Our goal is to provide the following.

This invention will be explained in detail below with reference to FIGS. 3 and 4. FIG. 3 shows a state in which a plurality of pixels are arranged in a matrix as in FIG. 2, and the entire arrangement is in the form of a horizontally long rectangle. Of each pixel, the pixels 10a and 10b arranged at the outer peripheral edge are formed larger than the other pixels 10c. That is, among the pixels 10a and 10b arranged on the outer periphery, the pixel 10a
The pixels 10b are arranged at the four corners, and the pixels 10b are arranged at the outer peripheral edge other than the four corners.
The pixel 10a is a pixel 1 formed in a square.
The pixel 10b is formed into a square having a size approximately four times that of the pixel 0c, and the pixel 10b is formed into a rectangle having a size approximately twice that of the pixel 10c.

Next, the shape and arrangement of the electrodes constituting each pixel will be explained with reference to FIG. 4. A plurality of row electrodes 11A, 11B, 11C, . . . formed in a flat plate shape are arranged in the lateral direction of the display surface.
In this case, the row electrodes of the first row and the last row are formed wider than the other row electrodes. Also,
A plurality of column electrodes 12A, 12B, 12C, . . . formed in a flat plate shape are arranged in the vertical direction of the display surface. In this case, each column electrode is divided into a plurality of parts, and the opposing row electrodes are divided into two parts. Among the column electrodes, the first and last column electrodes are formed wider than the other column electrodes, and are arranged at the top and bottom sides of the respective divided electrodes in each column. The divided electrodes are formed longer than the other divided electrodes in that row. Row electrodes 11A, 11B formed and arranged in this way...
Each pixel 10a to 10c is formed at a portion where the column electrodes 12A, 12B, . . . overlap with each other. Also, the left end portions (hatched portions) of the row electrodes 11A, 11B...
The upper end portions (hatched portions) of the column electrodes 12A, 12B... indicate connection terminals, and the row electrodes 11A, 11
A scanning signal is supplied to the connection terminal of B..., and
A display signal is supplied to the connection terminals of the column electrodes 12A and 12B. Of the respective divided electrodes in each column, the odd-numbered divided electrodes counted from the upper end side are commonly connected to the lead wire _l1 , and the even-numbered divided electrodes are commonly connected to the lead wire _l2 .

According to the dot matrix display device configured in this way, the pixels 1 arranged on the outer peripheral edge
Since the pixels 0a and 10b are formed larger than the other pixels 10c, when the liquid crystal cell is installed in the device case, as shown in FIG. On the other hand, even if the setting position of the liquid crystal cell is shifted, the area where the pixels of the liquid crystal cell are arranged is the display area C.
There is no blank area (non-display area) within the display area.

In the above embodiment, the pixels arranged on the outer periphery are about twice or four times as large as the other pixels, but the size is not particularly limited.

Further, although the above embodiments have been described in the case where the present invention is applied to a liquid crystal television, the present invention can also be applied to display devices for electronic watches and small electronic calculators. Further, the display element may be another display element such as an electrochromism display element.

As explained in detail above, this idea makes the pixels on the outer edge larger than the other pixels, so even if there is a slight misalignment between the parting board or the equipment case and the display device, the equipment can be easily No non-display portion is generated within the display area, and alignment with the parting board or equipment case can be easily performed.

[Brief explanation of the drawing]

1 and 2 show a dot matrix display type liquid crystal display device, and FIG. 1 is a schematic configuration diagram;
FIG. 2 shows pixels arranged in a matrix, and FIGS. 3 and 4 show dot matrix display type liquid crystal display devices to which this invention is applied.
FIG. 3 is a diagram showing pixels arranged in a matrix, and FIG. 4 is a diagram showing the shape and arrangement of each electrode constituting the pixel. 10a, 10b, 10c...pixels.

Claims (1)

[Scope of utility model registration request] A liquid crystal cell having a plurality of pixels arranged in a row direction and a column direction, and a shielding member disposed in front of the liquid crystal cell and having an opening for defining a display area of the liquid crystal cell. In a dot matrix display device that performs display by selecting pixels of A dot matrix display device characterized in that a dot matrix display device is formed.