Self light emitting display module, electronic equipment into which the same module is loaded, and inspection method of a defect state in the same module

Abstract

Provided is a self light emitting display module by which defect can be reported to a user immediately in a case where defect occurs for example in a pixel of a light emitting display panel. Output terminal potentials of constant current sources I 1 -In which supply constant currents to respective EL elements E 11 -Enm arranged in a light emitting display panel 1 are drawn via inspection lines TL 1 -TLn and are selected by a select switch SW 1 . A selected electrical potential is supplied to first and second comparators CP 1 , CP 2 whose comparison reference potentials differ, and their comparison results are latched by latch circuits LC 1 , LC 2 respectively to be stored in a data register 6 provided as a memory means. A determination is made as to whether or not defect has occurred in a portion of a part including the respective EL elements and respective drivers 2,3 through data stored in the data register 6.

Description

technical field [0001] The present invention relates to a self-luminous display module having, for example, an organic EL (electroluminescence) element as a self-luminous element as a self-luminous element for a light-emitting display panel of a pixel and a driving device for lighting the light-emitting display panel. A self-luminous display module that functions as a defect state at the display panel or the above-mentioned lighting driving device, or the connection portion between the above-mentioned light-emitting display panel and the above-mentioned lighting driving device, and a method for inspecting the defect state of the module. Background technique [0002] Displays are attached to most of the currently available electronic devices and the like, and the displays are indispensable as human-machine interfaces of devices supporting the information society. If the above-mentioned display is used in a field where a display failure may endanger human life, such as a medic...

AI Technical Summary

Problems solved by technology

[0003] For example, in injection equipment for pharmaceuticals, etc., when light leakage occurs in the direction of the scanning line on the digital display indicating the injection amount, it is difficult to judge whether the displayed number is "0" or "8".

In addition, the following problems may occur: the pixels in the part where the decimal point is displayed are not lit, and the digits of the number are displayed incorrectly, but the user does not pay attention to this and reads the value.

However, there are many technical issues to overcome the pixel defects that occur during the use of the display or other defects in the above-mentioned driving devices, and it has to be said that it is necessary to provide a display module that does not cause the above-mentioned defects after the product leaves the factory. very difficult

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