CN1588187A - Liquid crystal display with multiple panels - Google Patents

Abstract

A liquid crystal display with multiple panels comprises an interface circuit and a liquid crystal display module. The interface circuit is used for receiving the first image data and outputting the second image data. The liquid crystal display module comprises a time schedule controller, a first panel module and a second panel module. The time schedule controller receives the second image data and outputs third and fourth image data accordingly. The first panel module and the second panel module respectively display a first picture and a second picture according to the third image data and the fourth image data.

Description

LCD display with multiple panels

technical field

The invention relates to a liquid crystal display, in particular to a liquid crystal display with multiple panels.

Background technique

Due to the advantages of thin volume, light weight and low electromagnetic radiation, Liquid Crystal Display (LCD) has been widely used in recent years. Figure 1 is a structural diagram of a traditional liquid crystal display. The liquid crystal display 100 includes an interface circuit 101 and a liquid crystal display module 102 . The interface circuit 101 is used for receiving external image data, such as output from a personal computer host, converting it into digital image data and outputting it. The liquid crystal display module 102 then displays images according to the digital image data.

The external image data is, for example, digital DVI data, or analog S-video, composite video, D-sub video, and so on. The interface circuit 101 includes a scaler IC (not shown in the figure) to output digital image data after adjusting the size of the external image data.

The liquid crystal display module 102 includes a control circuit 110 and a panel module 120 . The control circuit 110 drives the panel module 120 to display images according to the digital image data. The control circuit 110 includes a timing controller (timing controller) 112 , a color corrector 114 and a DC-DC power converter 116 . The panel module 120 includes a data driver 122 , a scan driver 124 and a liquid crystal panel 126 .

The timing controller 112 receives the digital image data and then outputs the first image data to the data driver 122 . The color corrector 114 outputs color correction parameters to the data driver 122 according to the characteristics of the liquid crystal panel 126 , and the color correction parameters include a plurality of Gamma voltages, for example. The DC-DC power converter 116 is used to output DC power as a power source for the panel module 120 .

However, a general liquid crystal display can only display one screen, and if multiple screens need to be displayed at the same time, multiple liquid crystal displays need to be purchased, which makes the installation cost too high.

Contents of the invention

In view of this, the object of the present invention is to provide a liquid crystal display with multiple panels, which is used to display the same or different images through the multiple panels.

According to the object of the present invention, a liquid crystal display with multiple panels is proposed. The liquid crystal display includes an interface circuit and a liquid crystal display module. The interface circuit is used for receiving the first image data and outputting the second image data. The liquid crystal display module includes a control circuit, a first panel module and a second panel module. The control circuit includes a timing controller, a color corrector and a DC-DC power converter. The timing controller is used for receiving the second image data and outputting the third image data and the fourth image data accordingly. The color corrector is used for outputting the first color correction parameter and the second color correction parameter. The DC-DC power converter is used to output the first DC power and the second DC power. The first panel module operates with the first DC power supply, and displays the first frame according to the first color correction parameter and the third image data. The second panel module operates with the second DC power supply, and displays the second picture according to the second color correction parameter and the fourth image data.

In order to make the above-mentioned purpose, features, and advantages of the present invention more comprehensible, a preferred embodiment is specifically cited below, and is described in detail with reference to the accompanying drawings.

Description of drawings

FIG. 1 shows a structure diagram of a known LCD screen display.

FIG. 2 shows a structure diagram of a liquid crystal display with multiple panels according to a preferred embodiment of the present invention.

FIG. 3 shows a structure diagram of a liquid crystal display with multiple panels according to another preferred embodiment of the present invention.

Explanation of reference numbers

100: LCD display

200, 300: Liquid crystal display with multiple panels

101, 201, 301: interface circuit

102, 202, 302: LCD module

110, 210, 310: control circuit

120, 220, 230, 320, 330: panel module

112, 212, 312: timing controller

114, 214, 314: Color corrector

116, 216, 316: DC-DC power converter

122: Data Driver

124: scan driver

126: LCD panel

318, 319: timing control unit

Detailed ways

Please refer to FIG. 2 , which shows a structure diagram of a liquid crystal display with multiple panels according to a preferred embodiment of the present invention. The liquid crystal display 200 includes an interface circuit 201 and a liquid crystal display module 202 . The interface circuit 201 is used to receive the first image data, and output the second image data to the liquid crystal display module 202 to display the first frame and the second frame.

The liquid crystal display module 202 includes a control circuit 210 , panel modules 220 and 230 . The control circuit 210 drives the panel modules 220 and 230 to display the first frame and the second frame respectively according to the second image data. The control circuit 210 includes a timing controller (timing controller) 212 , a color correction unit 214 and a DC-DC power converter 216 . The panel modules 220 and 230, as known panel modules, respectively have a data driver, a scan driver and a liquid crystal panel, which are not shown here

Example figure.

The timing controller 212 receives the second image data, and outputs third image data and fourth image data accordingly. The color corrector 214 outputs the first color correction parameter and the second color correction parameter according to the characteristics of the panel module 220 and the panel module 230 . The first color correction parameter and the second color correction parameter respectively have a plurality of gamma voltages, for example. The DC-DC power converter 216 is used to output the first DC power and the second DC power as power for the panel module 220 and the panel module 230 . The panel module 220 operates with the first DC power supply, and then displays the first frame according to the first color correction parameter and the third image data. The panel module 230 operates with the second DC power supply, and then displays the second frame according to the second color correction parameter and the fourth image data.

In this embodiment, the third image data and the fourth image data output by the timing controller 212 are the same, so that the first frame and the second frame displayed by the panel modules 220 and 230 are also the same. And the first color correction parameter is the same as the second color correction parameter, and the first DC power supply and the second DC power supply are also the same. Because the liquid crystal display of this embodiment can control the display of two panel modules by using a set of control circuits, the production cost is reduced, and this embodiment is not limited to using two panel modules, and can also use more than two panel modules.

Please refer to FIG. 3 , which shows a diagram of a liquid crystal display with multiple panels according to another preferred embodiment of the present invention. The liquid crystal display 300 includes an interface circuit 301 and a liquid crystal display module 302 . The interface circuit 301 is used for receiving the first image data and outputting the second image data to the liquid crystal display module 302 to display the first frame and the second frame.

The LCD module 302 includes a control circuit 310 , panel modules 320 and 330 . The control circuit 310 drives the panel modules 320 and 330 to display the first frame and the second frame respectively according to the second image data. The control circuit 310 includes a timing controller 312 , a color corrector 314 and a DC-DC power converter 316 . The panel modules 320 and 330 are known panel modules, which respectively have a data driver, a scan driver and a liquid crystal panel, which are not shown in this embodiment.

The timing controller 312 receives the second image data, and outputs third image data and fourth image data accordingly. The color corrector 314 outputs a first color correction parameter and a second color correction parameter according to the characteristics of the panel modules 320 and 330 . The first color correction parameter and the second color correction parameter respectively have a plurality of gamma voltages, for example. The DC-DC power converter 316 is used to output the first DC power and the second DC power as power for the panel modules 320 and 330 . The panel module 320 operates with the first DC power supply, and displays the first frame according to the first color correction parameter and the third image data. The panel module 330 operates with the second DC power supply, and displays the second frame according to the second color correction parameter and the fourth image data.

In this embodiment, the timing controller 312 further includes a timing control unit 318 and a timing control unit 319 . The timing control unit 318 outputs third image data according to the second image data to control the panel module 320 accordingly. The timing control unit 319 outputs fourth image data according to the second image data to control the panel module 330 accordingly. The second image data includes two different frame data, so that the third image data is different from the fourth image data, and therefore the first frame is also different from the second frame. The first color correction parameter is the same as the second color correction parameter, and the first DC power supply and the second DC power supply are also the same. In this embodiment, a group of control circuits can be used to make the two panel modules display different pictures, so the cost of the liquid crystal display can be reduced and the use is convenient. And this embodiment is not limited to using two panel modules, and more than two panel modules can also be used.

The liquid crystal display with multiple panels disclosed in the above embodiments of the present invention uses the same set of control circuits to correspondingly control multiple panel modules to display the same or different independent images. Then the production cost and volume of the liquid crystal display can be reduced, so as to achieve the purpose of cost saving and the light, thin and short characteristics of the liquid crystal display.

In summary, although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Those skilled in the art can make various modifications and changes without departing from the spirit and scope of the present invention. modification, so the protection scope of the present invention shall be determined by the claims of the present invention.

Claims (6)

1. A liquid crystal display with multiple panels, comprising: an interface circuit for receiving a first image data and outputting a second image data; and A liquid crystal display module, comprising: a timing controller, receiving the second image data and outputting a third image data and a fourth image data accordingly; A color corrector, outputting a first color correction parameter and a second color correction parameter; A DC-DC power converter, outputting a first DC power supply and a second DC power supply; a first panel module, operated by the first DC power supply, and displaying a first frame according to the first color correction parameter and the third image data; and A second panel module operates with the second value current power supply, and displays a second picture according to the second color correction parameter and the fourth image data. 2. The liquid crystal display as claimed in claim 1, wherein the third image data is the same as the fourth image data, so that the first frame is substantially the same as the second frame. 3. The liquid crystal display as claimed in claim 1, wherein the first color correction parameter is the same as the second color correction parameter. 4. The liquid crystal display as claimed in claim 1, wherein the first DC power source and the second DC power source are the same. 5. The liquid crystal display as claimed in claim 1, wherein the third image data is different from the fourth image data, so that the first frame is different from the second frame. 6. The liquid crystal display as claimed in claim 5, wherein the timing controller comprises a first timing control unit and a second timing control unit, respectively outputting the third image data and the fourth image data according to the second image data Image data.