DESC:TECHNICAL FIELD

[001] The present subject matter described herein, in general, relates to display devices and in particular to an organic electroluminescent display and more particularly to a method and a system forenhancing life a display devices.

BACKGROUND

[002] Organic electroluminescent display such as organic light emitting diode (OLED) display in motor protection relay is well known in the art. The OLED modules have defined operation life time but after certain period such as 1 or 2 years of usages, it is found that the OLED display reflects be ghost images. If the device is operating at higher temperature like 70°C the ghost image may startappearing with 15 to 16 hours of usage.The emergence of ghost images on the OLEDdisplay is due to continuous operation of OLED module which further leads to a degradation of display panel life and depending upon the brightness set by a user, the appearance of ghost images may increase. The ghost image on a display as illustrated in figure 1 creates dummy images on the display which makes display reading difficult for user.

[003] It is desirable in modem imaging display systems to provide images having good contrast that appear sharp and undistorted to the viewer and increase display life. Therefore, keeping in view the need of enhancing the life of display devices, it is essential to keep the display panels active for lesser time. Thus, there exists a dire need to provide a system that enable and/or disable display panel. Thus by efficient turning off display panel during idle condition, it can extend the display operating life and thus reducing redundant use of display unit and occurrence of ghost image in the display module.

SUMMARY OF THE INVENTION

[004] The following presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. This summary is not an extensive overview of the present invention. It is not intended to identify the key/critical elements of the invention or to delineate the scope of the invention. Its sole purpose is to present some concept of the invention in a simplified form as a prelude to a more detailed description of the invention presented later.

[005] An object of the present invention is to provide a method and system for enhancing the organic electroluminescent display life.

[006] Another object of the present invention is to provide a method for reducing ghost effect on a display device.

[007] Accordingly, in one implementation, the present invention provides a microcontroller based system for enhancing an organic electroluminescent display life. The system comprising an organic electroluminescent display module that includes anorganic electroluminescent display for displaying data, a processor configured to turning ON and/or OFF said organic electroluminescent display.

[008] In one implementation, present invention provides method for enhancing an organic electroluminescent display life. The method comprising detecting, by means of key pressed, enable and/or disable of a power save mode in anorganic electroluminescent display, sensing an ideal state of display, turning off said organic electroluminescent display in the event of said ideal state of a display.

[009] In one implementation, the power save mode turns off the display when unit is in ideal state for 2min., using this feature we can enhance the OLED panel life. Enabling power save mode will delay the ghost image issue which occurs due to continuous operation of OLED panel.

[0010] In one implementation, the power save mode may be a complete software process and/or application hence it will not impact any cost in other hand it will improve the product performance and reduces the display field issues.

[0011] In one implementation, the present invention provides the power save mode that turns off the display when unit is in ideal state for 2min., using this feature we can enhance the OLED panel life. Enabling power save mode delaysa ghost image issue which occurs due to continuous operation of OLED panel.

[0012] In protection relays product, power consumption is most important factor. In one implementation, power is saved by off the display screen whenever display is not required.

[0013] In one implementation, in system setting power save mode enable/disable options is available. If user select disable then the display unit not turns off itself it will continue to operate the as earlier releases. If user enables the power save mode then unit will turn off itself after 2min of inaction by user.

[0014] Accordingly, in one implementation, a system for enabling and/or disabling at least one panel of a display module in at least one protection relay devices is disclosed. The system comprises at least one microcontroller configured to detect at least one state of the display module, wherein the state is selected from active and/or inactive state; enable and/or disable the panel of the display module based on the state detected and thereby delay an appearance of at least one ghost images on the panel.

[0015] In one implementation, a system for enabling and/or disabling at least one panel of a display module in at least one protection relay devices is disclosed. The system comprises at least one microcontroller configured to detect at least one state of the display module, wherein the state is selected from active and/or inactive state;operate the panel of the display module based on the state detected and thereby delay an appearance of at least one ghost images on the panel, wherein if the ideal state of the display module is detected for a pre-defined interval of time, the panel of the display module is disabled.

[0016] In one implementation, a method for enabling and/or disabling at least one panel of a display module in at least one protection relay devices is disclosed. The method comprises:
· activating at least one option for enabling and/or disabling the panel of the display module in the protection relay devices;
· detecting, using at least one microcontroller, at least one state of the display module, wherein the state is selected from active and/or inactive state;
· operating the panel of the display module based on the state detected and thereby delay an appearance of at least one ghost images on the panel, wherein if the ideal state of the display module is detected for a pre-defined interval of time, the panel of the display module is disabled.

[0017] The available architectures of display do not implemented use power saver mode, as a result of which the displays’ get the ghost image in some working years (exact below 1.5years). The ghost image occurs due to non-uniform distribution of display images. For an example, if some segments are continuously used in the organic light-emitting diode (OLED) panel then over the use they will degrade and the intensity of these LED’s will reduce. This reduction of intensity will look like shadow of that particular segment. Due to his shadow and second image will appear to the user. The appeared ghost image cannot be taken out of OLED panel but occurrence of ghost image can be prevented by using screen saver kind of technique’s (as commonly used for computers) but in industrial product it not possible to have screen savers. Hence, blanking the OLED panel is convenient over screen saver as it will reduce the continuous use of segments by switching them “OFF” and used when it is required. Power save implementation will reduce the use of OLED panel hence the ghost image occurrence will be reduced by using this technique.To eliminate the problem of ghost image,the power save modemust beimplemented.

[0018] As compared to the conventional techniques, according to the present invention, the power saver mode is implemented based on a firmware. According to the present invention, in power saver mode the display goes OFF when user do not press the key for 2 minutes and also there is no any fault present. Due to the power saver mode, the display life is increased economically 3 to 4 years as compared to conventionalarchitecture.Further, the problem of ghost image is also solved. Due to the power saver mode as disclosed in the present invention, OLED screen goes OFF when there is no any fault or any key pressed for 2 min, causing the screen OFF and when OLED screen is ON, the ghost image is not shown on OLEDscreen.

[0019] Other aspects, advantages, and salient features of the invention will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses exemplary embodiments of the invention.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS

The above and other aspects, features, and advantages of certain exemplary embodiments of the present invention will be more apparent from the following description taken in conjunction with the accompanying drawings in which:

[0020] Figure 1 illustratesan organic electroluminescent display with ghost images, in accordance with an embodiment of the present subject matter.

[0021] Figure 2 illustrates a screen shots of the present invention in accordance with an embodiment of the present subject matter.

[0022] Persons skilled in the art will appreciate that elements in the figures are illustrated for simplicity and clarity and may have not been drawn to scale. For example, the dimensions of some of the elements in the figure may be exaggerated relative to other elements to help to improve understanding of various exemplary embodiments of the present disclosure.Throughout the drawings, it should be noted that like reference numbers are used to depict the same or similar elements, features, and structures.

DETAILED DESCRIPTION OF THE PRESENT INVENTION

[0023] The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of exemplary embodiments of the invention. It includes various specific details to assist in that understanding but these are to be regarded as merely exemplary.

[0024] Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

[0025] The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the invention. Accordingly, it should be apparent to those skilled in the art that the following description of exemplary embodiments of the present invention are provided for illustration purpose only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.

[0026] It is to be understood that the singular forms “a,” “an,” and “the” include plural referents unless the context clearly dictates otherwise.

[0027] By the term “substantially” it is meant that the recited characteristic, parameter, or value need not be achieved exactly, but that deviations or variations, including for example, tolerances, measurement error, measurement accuracy limitations and other factors known to those of skill in the art, may occur in amounts that do not preclude the effect the characteristic was intended to provide.

[0028] Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments and/or in combination with or instead of the features of the other embodiments.

[0029] It should be emphasized that the term “comprises/comprising” when used in this specification is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof.

[0030] In one implementation, an organic electroluminescent display is an organic light emitting diode (OLED) display.

[0031] In one implementation, in system settings a power save mode may include an enable and/or disable option. If user selects a disable option then said OLED display unit does not turn off itself and thus will continue to operate. If user enables the power save mode then unit will turn off itself after 2min of inaction by user.

[0032] In one implementation, said OLED display unit will come out of sleep mode in following conditions:
1) Any key press,
2) In alarm condition, display will show Pop-Up and goes in to sleep after 2 min,
3) In trip condition display will latch the fault Pop-Up such that customer will come to know that there is fault occurred and Motor has been tripped,
4) Power supply reset.

[0033] In one implementation, said OLED display is used in an electrical protection relay for displaying data.

[0034] It may be understood by the person skilled in the art that, the need of the present invention is to increase the life of OLED panels used in the protection relay for display purpose. Normally in the protection relays, the display is used only to monitor the parameter when operator is near the panel and/or they are used for local use like for any analysis when manual corrections are required. Due to growth and development of the technologies, the industries are moving on automations and panels are operated remotely. Manual operations are reduced and/or they are only used if the maintenance or correction need to be done is panel. Hence, the display is useful but not the extent that they must be continuously ON. The displays are useful only when operator needs them to be observed. For rest of the time they keep showing the values which may not be monitored continuously. OLED panel in long run have a characteristic of having Ghost image issue even if they are used under stated conditions. Industrial application like cement plants or steel plants where the normal operating temperature is high compare to other industries. Displays with OLED will are more likely to have ghost image.

[0035] The present invention enables to save the power consumption as the OLED panel will be turned OFF if there is no activity form user which results in energy conservation. The current invention will switch OFF the OLED panel and it extent the operating time of product. Hence, the OLED manufacturers will provide the normal run time for which OLED can display the image without ghost image.

[0036] In one implementation, the present invention is only limited to industrial applications where OLED are used for display purpose. As the platform on which has been built is only use DINTO industrial product like protection relay or meters.

[0037] Some of the important features of the present invention, considered to be noteworthy are mentioned below:
1) Extend OLED module life.
2) Reduces ghost images in OLED display
3) Reduces continuous power consumption of the Motor protection relay. Turning off OLED panel will conserve energy utilized to run OLED’s.
4) Display sleep mode feature in protection relays similar to computers.
5) Inexpensive and enhances the product performance and reduces the display field issues.
,CLAIMS:1. A system for enabling and/or disabling at least one panel of a display module in at least one protection relay devices, the system comprising:
at least one microcontroller configured to:
detect at least one state of the display module, wherein the state is selected from active and/or inactive state;
enable and/or disable the panel of the display module based on the state detected and thereby delay an appearance of at least one ghost images on the panel.

2. A system for enabling and/or disabling at least one panel of a display module in at least one protection relay devices, the system comprising:
at least one microcontroller configured to:
detect at least one state of the display module, wherein the state is selected from active and/or inactive state;
operate the panel of the display module based on the state detected and thereby delay an appearance of at least one ghost images on the panel, wherein if the ideal state of the display module is detected for a pre-defined interval of time, the panel of the display module is disabled.

3. The system as claimed in claim 1 and 2, wherein the display module is configured to enable the panel on detection of at least one a key press, an alarm condition, a trip condition, a power supply reset, or any combination thereof.

4. The system as claimed in claim 3, wherein the panel detects based on at least one instruction received from the microcontroller.

5. The system as claimed in claim 1 and 2 comprises a setting provided in the protection relay devices for the enabling and/or disabling of the panel of the display.

6. A method for enabling and/or disabling at least one panel of a display module in at least one protection relay devices, the method comprising:
activating at least one option for enabling and/or disabling the panel of the display module in the protection relay devices;
detecting, using at least one microcontroller,at least one state of the display module, wherein the state is selected from active and/or inactive state;
operating the panel of the display module based on the state detected and thereby delay an appearance of at least one ghost images on the panel, wherein if the ideal state of the display module is detected for a pre-defined interval of time, the panel of the display module is disabled.

7. The method as claimed in claim 6, comprises enable, using the microcontroller, the panel on detection of at least one a key press, an alarm condition, a trip condition, a power supply reset, or any combination thereof.