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Display

A technology for display devices and display panels, applied in the direction of digital output to display devices, static indicators, instruments, etc., can solve problems such as display quality degradation, and achieve the effect of improving the uniformity of light quantity and easy built-in

Inactive Publication Date: 2005-10-19
CITIZEN WATCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the display quality of the second display panel 5 is also degraded

Method used

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no. 1 example

[0107] The best mode for carrying out the display device of the present invention is explained below with reference to the drawings. The first display panel 4 is the main liquid crystal display panel, the second display panel 5 is the secondary liquid crystal display panel, and all the electrodes of the second display panel 5 are wired via the electrodes of the opposite first display panel 4, while the liquid crystal layer is provided Between the electrodes of the first display panel 4 and the electrodes of the second display panel 5 . The electrodes of the second display panel 5 are connected to the electrodes of the first display panel 4 while inter-board connectors are provided between the second display panel 5 and the first display panel 4 . figure 1 is a perspective view of a display device according to a first embodiment of the present invention, the front cover of which is opened. figure 2 is a perspective view of the display device according to the first embodiment,...

no. 2 example

[0141] A display device according to a second embodiment of the present invention is described with reference to the drawings. According to the second embodiment, an external signal is applied to the flexible printed substrate of the driving circuit mounted on the first display panel 4, and the inter-board provided between the first display panel 4 and the second display panel 5. The connector is formed as an integrated flexible printed substrate. Figure 8 is a top plan view of the first display panel 4 and the second display panel 5 unfolded on a plane. The following reference Figure 8 A display device according to the second embodiment will be described. The same contents and names as those in the first embodiment are denoted by the same reference numerals, and their descriptions are omitted or simplified.

[0142] Figure 8 is according to the first embodiment Figure 4 A top plan view of a display device of another embodiment of the display device is shown. Accordi...

no. 3 example

[0152] A display device according to a third embodiment of the present invention is described with reference to the drawings. According to the third embodiment, an inter-board switching element 91 that controls an on / off signal to be applied to the second display panel 5 is provided near the inter-board connector on the first display panel 4 . Figure 9 is a top plan view of the first display panel 4 and the second display panel 5 unfolded on a plane. Figure 10 is an equivalent circuit diagram of a part of a pixel unit of the first display panel 4 and a part of an inter-panel switching element. The following reference Figure 9 and 10 A display device according to a third embodiment will be described. The same contents and names as those in the first embodiment are denoted by the same reference numerals, and their descriptions are omitted or simplified.

[0153] Figure 9 is according to the first embodiment Figure 4 A top plan view of a display device of another embod...

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PUM

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Abstract

To reduce the number of panel driving circuits of a display apparatus having a plurality of display panels, and to minimize the mounting area of the display apparatus, a display apparatus with two kinds of display panels of a first display panel ( 4 ) and a second display panel ( 5 ) includes a driving circuit mounted on the first display panel ( 4 ). A driving signal from the driving circuit is transmitted to the second display panel ( 5 ) via an electrode provided on the first display panel ( 4 ). An inter-panel switching element is provided between the first display panel ( 4 ) and the second display panel ( 5 ), thereby controlling turning passage and non-passage of the second display panel ( 5 ).

Description

technical field [0001] The present invention provides a display device having two active matrix liquid crystal display panels and a switching element provided on each pixel unit, wherein the second display panel can be driven through electrodes provided on the substrate of the first display panel . [0002] The present invention also provides an arrangement having an inter-panel switching element on at least one of the first substrate and the second substrate, the inter-panel switching element being controlled according to the presence or absence of a display of the second display panel Signals between electrodes provided on the first substrate and electrodes provided on the second substrate are passed and not passed, thereby saving unnecessary display of the display panel and reducing power consumption. [0003] The present invention also provides a display device on any one of the substrates constituting the first display panel and the second display panel, in the vicinity ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/14G06F3/147G09G3/20G09G3/32G09G3/36
CPCG09G3/3622G09G2310/0275G09G3/3208G06F3/147G09G3/20G09G3/3648G06F3/1423G09G2330/04G09G2300/0426H01L2224/73204
Inventor 关口金孝
Owner CITIZEN WATCH CO LTD