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Image display device equipment with checking terminal

A technology of an image display device and an image display panel, which is applied in the directions of measuring devices, identification devices, static indicators, etc., to achieve the effects of accurate inspection and cost reduction

Inactive Publication Date: 2004-09-08
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method of simply connecting the odd-numbered data lines of a plurality of liquid crystal panels to one inspection terminal and the even-numbered data lines to the other inspection terminal cannot individually and accurately inspect each liquid crystal panel.

Method used

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  • Image display device equipment with checking terminal
  • Image display device equipment with checking terminal
  • Image display device equipment with checking terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] figure 1 It is a block diagram showing the configuration of the color liquid crystal display device according to Embodiment 1 of the present invention. Such as figure 1 As shown, the color liquid crystal display device is provided with: a liquid crystal panel 1, a vertical scanning circuit 7 and a horizontal scanning circuit 8, and the device can be set on a mobile phone, for example.

[0022] The liquid crystal panel 1 includes: a plurality of liquid crystal cells 2 arranged in a plurality of rows and a plurality of columns, a plurality of scanning lines 4 respectively corresponding to a plurality of rows, a plurality of common potential lines 5 respectively corresponding to a plurality of rows and corresponding A plurality of data lines 6 arranged in a plurality of columns. A plurality of common potential lines 5 are connected to each other.

[0023] The liquid crystal cells 2 form a group of three in each row in advance. The three liquid crystal cells 2 in each g...

Embodiment 2

[0046] Figure 7 is a diagram illustrating an inspection method of an LCD module according to Embodiment 2 of the present invention. exist Figure 7 In this inspection method, a plurality of (three in the figure) LCD modules 41 to 43 are formed on the surface of a glass substrate 40 . Each LCD module 41-43 and image 3 same as shown in . The terminals 31 to 36 used for inspection of the respective LCD modules 41 to 43 are arranged facing one side of the glass substrate 40 . Further, along this side of the glass substrate 40 , an R terminal 51 , a G terminal 52 , a B terminal 53 , control terminals 54 to 56 , an even data terminal 57 , and an odd data terminal 58 are arranged.

[0047] The R terminals 31 of the LCD modules 41 to 43 are all connected to the R terminal 51 . The G terminals 32 of the LCD modules 41 to 43 are all connected to the G terminal 52 . The B terminals 33 of the LCD modules 41 to 43 are all connected to the B terminal 53 . The control terminals 34 o...

Embodiment 3

[0052] FIG. 8 is a diagram illustrating an inspection method of an LCD module according to Embodiment 3 of the present invention. In this inspection method of FIG. 8 , a plurality of (three in the figure) LCD modules 61 to 63 are formed on the surface of a glass substrate 60 . The external terminal portions 61 a to 61 c of the LCD modules 61 to 63 are disposed facing one side of the glass substrate 60 . Along the external terminal portions 61a-61c of the LCD modules 61-63, terminal switching circuits 64-66 for inspection are provided, respectively. Further, along this side of the glass substrate 60 , an R terminal 71 , a G terminal 72 , a B terminal 73 , control terminals 74 to 76 , an even data terminal 77 , and an odd data terminal 78 are provided.

[0053] Figure 9 is a circuit block diagram showing the structure of the LCD module 61 for use with image 3 comparing. refer to Figure 9 , LCD module 61 with image 3 The LCD module differs in that the inspection termina...

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PUM

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Abstract

An LCD module includes: an odd-numbered data terminal for applying an odd-numbered data signal to each odd-numbered set of data lines through a first N-type TFT and a demultiplexer at inspection; an even-numbered data terminal for applying an even-numbered data signal to each even-numbered set of data lines through a second N-type TFT and the demultiplexer at inspection; and a control terminal for applying a control signal to gates of the first and second N-type TFTs at inspection. It is therefore possible to reduce the number of terminals to be used at inspection, thereby achieving a inspection device at low cost.

Description

technical field [0001] The present invention relates to an image display device, in particular to an image display device formed on an insulating substrate and inspected before shipment. Background technique [0002] In recent years, with the development of high-definition liquid crystal panels, the number of terminals for connecting LCD (liquid crystal display: liquid crystal display) modules and FPC (flexible printed circuit board: flexible printed circuit boards) is also increasing. Also, as the LCD module is miniaturized, the pitch of the terminals is getting narrower. The inspection of the liquid crystal panel is carried out by contacting the probes on each terminal, but as the number of terminals increases and the pitch of the terminals narrows, the cost of the inspection equipment also increases. [0003] As a method of reducing the cost of the inspection device, one inspection terminal is connected to the odd-numbered data lines of the liquid crystal panel, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1345G01R31/00G02F1/13G02F1/133G02F1/1343G02F1/136G02F1/1362G02F1/1368G09F9/00G09F9/30G09G3/00G09G3/20G09G3/36H01L21/336
CPCG09G3/006G09G3/3688G02F1/1345G09G2310/0297G02F1/1309G02F2001/136254G09G2330/12G09G3/3648G02F2203/69G02F1/136254G02F1/133
Inventor 野尻勋村井博之
Owner MITSUBISHI ELECTRIC CORP
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