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Display device

A technology of display device and display panel, which is applied in the direction of permanent visual display device, identification device, digital output to display device, etc., to achieve the effect of reducing power consumption

Active Publication Date: 2004-09-08
JAPAN DISPLAY INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in U.S. Patent No. 5670970, there is no record of supplying video signals to two liquid crystal screens respectively.

Method used

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Experimental program
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Effect test

Embodiment Construction

[0022] Referring to the accompanying drawings 1 to Figure 9 The configuration of the display device according to Embodiment 1 of the present invention will be described.

[0023] FIG. 1 is a schematic diagram showing a foldable mobile phone using two screens according to the present invention. Use, as shown in FIG. 1(A), there is a main screen (inner large screen) for inputting telephone numbers, characters, or various settings of the mobile phone, or as shown in FIG. 1(B), even if These are two screens such as a sub screen (outside small screen) that can display information even in a folded state. Here, in order to reduce the power consumption of the mobile phone using these two screens as much as possible, the display state is controlled so that the sub screen is not displayed when the main screen is used, and the sub screen is displayed in the standby state (folded state). display and the main screen becomes non-displayed. In addition, the data line driver circuit for d...

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PUM

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Abstract

A display device mounted on an outside device includes a first display panel, a second display panel, a data driver applying a tone voltage through a common data line, and a scan driver applying a scan signal to the first and second display panels through a scan line for each of the first and second display panels. The display device selects a first display mode or a second display mode in accordance with an instruction from the outside device. The first display mode provides that the first display panel indicates a display state and the second display panel indicates a non-display state, and the second display mode provides that the first display panel indicates the non-display state and the second display panel indicates the display state.

Description

technical field [0001] The present invention relates to a display device having a plurality of display panels (multiple display areas). Background technique [0002] As a prior art, U.S. Patent Publication No. 2001052887 (Japanese Patent Publication No. 2001-356746 ) describes a partial display that displays on a partial area of ​​a display panel. That is, in U.S. Patent Publication No. 2001052887, when a liquid crystal display device or the like having pixels in a matrix of n rows and m columns is driven, when a partial display command is issued, in one frame period, n rows and m columns are displayed. In the matrix, each row is sequentially selected in a settable partial display area of ​​s rows and m columns, and predetermined partial display data is written. In the background area other than the partial display area, predetermined background data such as off-display (white display) data is written. In the background area, in one frame period, only k rows and m columns ...

Claims

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Application Information

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IPC IPC(8): G02F1/1333G02F1/133G06F3/14G06F3/147G06F7/00G09F9/30G09G3/20G09G3/36G09G5/00H04N5/66
CPCG06F3/1423Y10S248/917Y10S248/918G09G2330/021G06F3/147H04M2250/16G09G3/3611Y10S345/905G09G3/36
Inventor 工藤泰幸松户利充大门一夫相泽弘己
Owner JAPAN DISPLAY INC