TWI401643B - Intelligent color liquid crystal display device and method using column and multicolor backlighting - Google Patents

Description

Intelligent color liquid crystal display device and method using column and multi-color backlight modulation

A liquid crystal display device and method, in particular, a device and a method for producing a smart color display effect by a color filter without a color filter for a monochrome liquid crystal panel and a single-order driver.

In order to produce a color display effect, a conventional liquid crystal display is provided with a color filter for filtering to generate a color. Generally, the color filters are each monochromatic R/G/B pixels, and are simultaneously filtered. The white backlight generates three primary colors of light such as red (R) light, green (G) light, and blue (B) light, and is combined into a complete color pixel of multi-color display by mixing light of different ratios.

Such a conventional method of producing a color, since it generates red (R) light, green (G) light, and blue (B) light by the color filter of the color filter, most of the backlight will be Filtration results in extremely low backlight utilization efficiency, relatively low color saturation, and high cost.

In order to solve the above-mentioned deficiencies, the main object of the present invention is to provide a color display device and method that do not require a color filter to improve light source utilization efficiency and reduce cost.

The invention comprises a monochrome liquid crystal panel, a single-order driver, a multi-color backlight modulation device and a multi-tone backlight, wherein the monochrome liquid crystal panel has a common electrode and a plurality of segment electrodes respectively disposed on the upper and lower sides. The multi-tone backlight has a backlight capable of emitting at least two different color backlights, and the single-order driver generates a plurality of programmable segment voltage signals and allows portions The segment voltage signal signal is input to the multi-color backlight modulation device to generate a common voltage signal and a number of color separation backlight driving signals corresponding to the backlight source color and synchronized, and the color separation backlight driving The signal input drives the multi-tone to backlight, and the common voltage signal and the plurality of segment voltage signals are respectively input to the common electrode and the plurality of segment electrodes.

Accordingly, the common voltage signal can be generated with the voltage signal of the segment to generate a voltage difference in a time-sharing manner in the same single-order pixel (Mono-Pixel), and the color separation backlight driving signal drives the backlight. Shooting at least two different color backlights or not, can simultaneously emit backlights of different colors, thereby allowing single-order pixels to be driven by time-sharing synchronously to emit backlights of different colors, which can form a color display effect after superposition. .

The details of the present invention will now be described with reference to the following drawings: Referring to FIG. 1 , FIG. 2 and FIG. 3 , the device of the present invention comprises a monochrome liquid crystal panel 10 and a single-order driver. 20, a multi-color backlight modulation device 30 and a multi-tone backlight backlight 40, wherein the monochrome liquid crystal panel 10 has a common electrode 11 and a plurality of segment electrodes 12 divided into upper and lower sides, and the monochrome liquid crystal panel 10 There are a plurality of single-order pixels 13 and corresponding to the overlapping points of the common electrode 11 and the segment electrode 12, and as shown in the figure, 16 single-order pixels 13 are taken as an example for illustration. The multi-tone backlight 40 has a backlight 41 that can emit at least two different color backlights, and is a backlight 41 that can generate colors such as red (R), green (G), and blue (B). Good implementation.

Please refer to FIG. 4 as shown in FIG. 4, the single-order driver 20 can sequentially generate a plurality of segment voltage signals according to the timing, and the segment voltage signals are programmable, and can be program-controlled by software in accordance with requirements. As shown, the single-stage driver 20 generates a first segment voltage signal 211, a second segment voltage signal 212, a third segment voltage signal 213, and a fourth segment voltage signal 214.

Please also refer to FIG. 5, the first segment voltage signal 211, the second segment voltage signal 212, the third segment voltage signal 213 and the fourth segment voltage signal 214 are respectively input to the multicolor The backlight modulation device 30, after being modulated, can generate a common voltage signal 31 (XCOM) and a number of color separation backlight driving signals 32, 33, 34 corresponding to the number of backlights that can be emitted by the backlight, respectively corresponding to Driving the backlight 41 to emit backlights of different colors (red (R), green (G), blue (B)), and let the color separation backlight driving signals 32, 33, 34 input to drive the multi-tone to backlight 40, while allowing The common voltage signal 31 and the plurality of segment voltage signals are input to the common electrode 11 and the plurality of segment electrodes 12, respectively.

The driving method of the present invention is as follows. First, a monochrome liquid crystal panel 10, a single-order driver 20, a multi-color backlight modulation device 30, and a multi-tone backlight 40 are prepared.

Then, the single-order driver 20 sequentially generates the plurality of segment voltage signals according to the timing, and the segment voltage signal is programmable, and can be program-controlled by the software according to requirements.

Then, the segment voltage signal is input to the multi-color backlight modulation device 30, and after being modulated, a common voltage signal 31 is generated, and the number of backlights 41 that can output the backlight color and the synchronized color separation backlight driving signal 32 are generated. , 33, 34 (shown in three colors).

Finally, the color separation backlight driving signals 32, 33, 34 are input to drive the multi-tone backlight 40, and the common voltage signal 31 and the plurality of segment voltage signals are respectively input to the common electrode 11 and the plurality of segment electrodes 12.

Accordingly, the complex common voltage signal 31 can generate a voltage difference with the segment voltage signal to drive whether it is illuminated in the same single-order pixel 13 in time division, and synchronously cause the backlight 41 to emit a backlight of different colors to By using the single-order pixel 13 to emit different color backlights by the backlight 41 at different times, a visual superposition effect is produced, and a color display effect can be formed.

It is worth mentioning that the present invention allows the single-order pixel 13 to emit different color backlights by the backlight 41 at different times, and the controllable change of the color separation backlight can be controlled by changing the segment voltage signal generated by the program control. The driving signals 32, 33, 34, that is, the backlights (red (R), green (G), blue (B)) driven by the color separation backlight driving signals 32, 33, 34, which are occupied by different color backlights The ratio is programmable and can be adjusted to meet the needs of a particular application.

Referring to FIG. 2, the segment voltage signal generated by the single-stage driver 20 can also generate a voltage driving signal after being modulated by the multi-color backlight modulation device 30. The drive signal can drive an external component 50, such as to cause the buzzer to sound, thereby increasing its application.

In the present invention, by controlling the segment voltage signal, the color ratio of the backlight of the multi-tone backlight 40 to generate red (R), green (G), blue (B) and the like can be controlled, so that it can be subjected to software. The program control forms a variety of uses, such as red backlight warning, colorful change backlight to enhance the recognizability and so on.

The above are only the preferred embodiments of the present invention and are not intended to limit the scope of the embodiments of the present invention. That is, the equivalent changes and modifications made by the scope of the patent application of the present invention are covered by the scope of the invention.

10‧‧‧Monochrome LCD panel

11‧‧‧Common electrode

12‧‧‧ segment electrode

13‧‧‧ single-order pixels

20‧‧‧ single-order driver

211‧‧‧ first stage voltage signal

212‧‧‧Second section voltage signal

213‧‧‧ Third stage voltage signal

214‧‧‧fourth segment voltage signal

30‧‧‧Multicolor backlight modulation device

31‧‧‧Common voltage signal

32, 33, 34‧‧ ‧ color separation backlight drive signal

40‧‧‧Multi-tone change backlight

41‧‧‧ Backlight

50‧‧‧External components

Figure 1 is a schematic view of an electrode of a monochrome liquid crystal panel of the present invention.

Figure 2 is a schematic view of a liquid crystal display device of the present invention.

3 is a schematic diagram of a multi-tone changing backlight of the present invention.

FIG. 4 is a diagram showing the segment voltage signal generated by the single-stage driver of the present invention.

FIG. 5 is a voltage signal diagram of a modulated output of the multi-color backlight modulation device of the present invention.

10‧‧‧Monochrome LCD panel

11‧‧‧Common electrode

12‧‧‧ segment electrode

13‧‧‧ single-order pixels

20‧‧‧ single-order driver

30‧‧‧Multicolor backlight modulation device

40‧‧‧Multi-tone change backlight

41‧‧‧ Backlight

50‧‧‧External components

Claims (6)

An intelligent color liquid crystal display device using column and multi-color backlight modulation, comprising: a monochrome liquid crystal panel having a common electrode and a plurality of segment electrodes disposed on upper and lower sides; a single order a driver, the single-stage driver generates a plurality of programmable segment voltage signals; a multi-tone backlight, the multi-tone backlight having a backlight of at least two different color backlights; and a multi-color backlight modulation device, the multi-color The segment voltage signal of the input portion of the backlight modulation device is modulated to generate a common voltage signal and a number of color separation backlight driving signals corresponding to the number of backlights that can be emitted by the backlight, and the color separation backlight driving signal is input and driven. The multi-tone is changed to the backlight, and the common voltage signal and the plurality of segment voltage signals are respectively input to the common electrode and the plurality of segment electrodes. An intelligent color liquid crystal display device using a column and a multi-color backlight modulation as described in claim 1, wherein the monochrome liquid crystal panel has a plurality of single-order pixels, and the single-order pixels are corresponding to each other. The overlapping point of the electrode and the segment electrode is set. The smart color liquid crystal display device of the use column and multi-color backlight modulation according to claim 2, wherein the plurality of segment voltage signals form a voltage difference with the common voltage signal to drive the plurality of single-order pixels. Intelligent color liquid crystal using column and multi-color backlight modulation a display method, the method comprising: preparing a monochrome liquid crystal panel having a common electrode and a plurality of segment electrodes disposed on the upper and lower sides; preparing a multi-tone backlight, the multi-tone backlight having an emission a backlight of at least two different color backlights; preparing a single-order driver that sequentially generates programmable multi-segment voltage signals in sequence; preparing a multi-color backlight modulation device, the multi-color backlight modulation device input Part of the plurality of segment voltage signals are modulated to generate a common voltage signal and a number of color separation backlight driving signals corresponding to the number of backlights that can be emitted by the backlight; and the color separation backlight driving signal input is driven to the multi-tone The backlight is changed, and the common voltage signal and the plurality of segment voltage signals are respectively input to the common electrode and the plurality of segment electrodes. An intelligent color liquid crystal display method using a column and a multi-color backlight modulation as described in claim 4, wherein the monochrome liquid crystal panel has a plurality of single-order pixels, and the single-order pixels are corresponding to each other. The overlapping point of the electrode and the segment electrode is set. An intelligent color liquid crystal display method using the column and multi-color backlight modulation according to claim 5, wherein the plurality of segment voltage signals form a voltage difference with the common voltage signal to drive the plurality of single-order pixels.