LIQUID CRYSTAL DISPLAY DEVICE AND ANALYSIS DEVICE INCLUDING THE SAME

• US 20100117675A1
• Filed: 01/20/2010
• Published: 05/13/2010
• Est. Priority Date: 07/06/2004
• Status: Abandoned Application

• Current Assignee: ARKRAY, Inc
• Original Assignee: ARKRAY, Inc
• Inventors: KAWAI, Takuji, OURA, Yoshimi, SHIRAKI, Yasunori
• Application Number:
  US12/690,698
• Publication Number:
  US 20100117675A1
• Time in Patent Office: Days
• US Class Current: 324/760.10
• CPC Class Codes: G01N 33/48785 Electrical and electronic details of measuring devices for physical analysis of liquid biological material not specific to a particular test method, e.g. user interface or power supply
• CPC Class Codes: G02F 1/1309 Repairing; Testing
• CPC Class Codes: G02F 1/1313 specially adapted for a particular application
• CPC Class Codes: G09G 2330/10 Dealing with defective pixels
• CPC Class Codes: G09G 2330/12 Test circuits or failure detection circuits included in a display system, as permanent part thereof
• CPC Class Codes: G09G 3/006 Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays testing individual LED's G01R31/2635; testing lamps G01R31/44; testing of optical features of LCD displays G02F1/1309
• CPC Class Codes: G09G 3/18 using liquid crystals
• CPC Class Codes: G09G 3/36 using liquid crystals

Abstract

In order to provide a liquid crystal display device which can detect a defective indication due to short circuit which occurs between a common electrode and a counter electrode by a conductive impurity enters into a liquid crystal display panel, and an analysis device including the same, a blood glucose meter includes a display section and a microcomputer. For performing an inspection for a defective indication on a liquid crystal display panel of the display section, the microcomputer uses ports as input/output ports for a defective indication inspection. The microcomputer detects whether an inspection signal sent from the port can be received at the other port or not to perform the inspection for a defective indication.

Claims

1. A liquid crystal display device, comprising:

a liquid crystal display panel which includes a first substrate with a first electrode formed thereon, a second substrate with a common electrode formed thereon and a liquid crystal enclosed between the first substrate and the second substrate, and which displays by changing an orientation of the liquid crystal by a difference in potential applied between the first electrode and the common electrode;

an input and output section which has a first output terminal which sends a signal to the first electrode and a second output terminal which sends a signal to the common electrode configured to drive the liquid crystal display panel;

a control section which uses the first output terminal and the second output terminal of the input and output section as input and output terminals for a defective indication inspection configured to perform an inspection for a defective indication in the liquid crystal display panel, and which performs the inspection for a defective indication by detecting whether a signal sent from one of the input and output terminals of the input and output section can be received at the other of the input and output terminals and performs the inspection for a defective indication every time power is turned on, and/or the display is switched, and stops supply of electric power to the liquid crystal display panel in response to detection of a defective indication.

2. A liquid crystal display device according to claim 1, wherein

the control section displays a message notifying that a defective indication appears on the liquid crystal display panel when the control section detects the defective indication.

3. A liquid crystal display device according to claim 1, wherein

the control section sounds an alarm sound when it detects the defective indication.

4. A liquid crystal display device according to claim 1, wherein

the control section performs the inspection for a defective indication every time power is turned on, and/or the display is switched.

5. An analysis device comprising:

a liquid crystal display device according to claim 1 as a display section.