DE102004063385B4 - Dotmatrixanzeige - Google Patents

Abstract

Dotmatrixanzeige with a constructive arrangement of rows (2) and columns (1) for generating a split dot matrix display, characterized that the rows (2) and / or columns (1) in the separation area (5) flat are summarized.

Description

The invention relates to a dot matrix display according to the preamble of claim 1, in particular the layout arrangement for dot matrix displays with dual scan control. Such Dotmatrixanzeige is from the DE 33 47 345 C2 known.

These describes a method of driving a liquid crystal matrix display panel with a plurality of row electrodes which are periodically generated Time signal voltage pulses supplied and a plurality of column electrodes connected to column electrode driver circuits are connected. The column electrodes are in a plurality of records divided into a plurality of areas of the matrix display board define.

A Passively driven dot matrix display is often used to drive in 2 halves divided to halve the multiplexing rate for better readability to achieve. Constructively, we designed this so that the columns (electrodes) on a substrate each divided in the middle. The lines (electrodes) are on the opposite substrate performed undivided.

At The intersection points are then each the driven pixel in the overlapping area. On The reason for the adjustment tolerances between the substrates must be the Lines, at least in the separation area so a large distance have that columns one half can not overlap with the lines of the other half. This would become one visible malfunction (partially overlapping Pixel) lead.

disadvantage

By this minimum column spacing can be the pixel pitch of the dot matrix not be reduced arbitrarily. It results for the human eye unsightly Resolution. For certain LCD technologies, this dividing line becomes even clearer visible, because the space is not controlled with "non select level" can. Depending on The fabrication of the substrates can also be the conductor track-free area in the dividing line due to the different cell spacing as a disturbing line be seen. Due to the o.a. Conditions will be this dividing line visible in different operating states and will be annoying felt.

The The object of the invention is the printed conductor layout in a dot matrix display of the type mentioned above so that adjustment tolerances can no longer lead to a visible malfunction, the dividing line at least is filled with conductor material on a substrate and all areas can be controlled are.

These Task is through the constructive arrangement of rows and columns for generating a split dot matrix display with the features of Claim 1 solved. The dependent claims describe advantageous embodiments of the invention.

Advantages of the solution

On Reason of execution the lines in the separation area as a filled double line becomes one wanted full-surface overlap reached. This leads even a maximum allowable misalignment according to production guidelines to no malfunction. This allows smaller pixel distances, since no attention to adjustment tolerances more has to be taken. In general, the adjustment tolerances for the production less critical. As a result, there is an increase in the good piece number and thus a production cost savings possible.

By the whole area execution The line results in a more visually homogeneous appearance and all Areas can be controlled. In the end, the dividing line is no longer visible. To adapt to the visual appearance of the display, can However, the double line also provided with appropriate structures become.

description

One embodiment The invention is illustrated in the drawing and will be described below described in more detail. There are:

version 1 state of the art

version 2 version the completed one Double line driven by 2 drivers

version 3 version the completed one Double line driven by a driver

A passive matrix dot matrix, especially designed as an LCD, is made up of columns ( 1 ) and lines ( 2 ) generated. The driven pixel arises in each case in the overlapping area. As a rule, the dot matrix is in an upper ( 3 ) and a lower ( 4 ) Half divided. This results in a separation area ( 5 ) determined by the last line of the upper range ( 6 ) and the first line of the lower section ( 7 ).

According to the invention, these lines are now in the separation area to a common line ( 8th ) summarized. To further unify the appearance, the line can be structured according to the overall layout. The control can now be controlled by the corresponding outputs of the upper ( 9 ) and lower ( 10 ) Driver ICs done together or by only one IC, which works with the second in master-slave circuit.

Claims (7)

Dot matrix display with a constructional arrangement of lines ( 2 ) and columns ( 1 ) for generating a split dot matrix display, characterized in that the rows ( 2 ) and / or columns ( 1 ) in the separation area ( 5 ) are summarized flat. Dot matrix display according to Claim 1, characterized that the separation is horizontal Dot matrix display according to claim 1 or 2, characterized characterized in that the separation is vertical Dot matrix display according to one of the preceding claims, characterized characterized in that the control by two corresponding driver outputs he follows. Dot matrix display according to one of the preceding claims, characterized characterized in that the drive by a driver output he follows. Dot matrix display according to one of the preceding claims, characterized characterized in that the area summarized row and / or column area is structured. Dot matrix display according to one of the preceding claims, characterized characterized in that the arrangement is designed as OLE D.