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ORGANIC LIGHT EMITTING DISPLAY DEVICE PERFORMING A SENSING OPERATION AND METHOD OF SENSING DEGRADATION thereof

A technology of luminous display and deterioration, applied in static indicators, instruments, etc., can solve the problem of long sensing time, and achieve the effect of shortening the sensing time

Pending Publication Date: 2022-01-11
SAMSUNG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the organic light emitting display device of the related art performs the sensing operation for all pixels included in the organic light emitting display device, there is a problem that the sensing time consumed by performing the sensing operation is long.

Method used

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  • ORGANIC LIGHT EMITTING DISPLAY DEVICE PERFORMING A SENSING OPERATION AND METHOD OF SENSING DEGRADATION thereof
  • ORGANIC LIGHT EMITTING DISPLAY DEVICE PERFORMING A SENSING OPERATION AND METHOD OF SENSING DEGRADATION thereof
  • ORGANIC LIGHT EMITTING DISPLAY DEVICE PERFORMING A SENSING OPERATION AND METHOD OF SENSING DEGRADATION thereof

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Embodiment Construction

[0059] Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. The same reference numerals are used for the same constituent elements in the drawings, and repeated explanations for the same constituent elements are omitted.

[0060] figure 1 is a block diagram showing an organic light emitting display device according to an embodiment of the present invention, figure 2 is a circuit diagram showing an example of a pixel included in an organic light emitting display device according to an embodiment of the present invention, image 3 is a diagram showing an example of grouping a plurality of pixels of a display panel into a plurality of pixel blocks, Figure 4 is a timing chart for explaining an example in which a controller performs a read operation and a write operation for a nonvolatile memory device in an organic light emitting display device according to an embodiment of the present inventi...

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Abstract

The invention discloses an organic light emitting display device performing a sensing operation and a method of sensing degradation thereof. The organic light-emitting diode (OLED) display device includes a display panel including a plurality of pixels, the plurality of pixels being grouped into a plurality of pixel blocks, a nonvolatile memory configured to store previous accumulated block degradation information for the plurality of pixel blocks up to a previous driving period, a controller configured to calculate current block degradation information for the plurality of pixel blocks in a current driving period, to calculate current accumulated block degradation information for the plurality of pixel blocks up to the current driving period by adding the current block degradation information to the previous accumulated block degradation information in response to a power control signal indicating a power-off, and to determine whether a sensing operation for each of the plurality of pixel blocks is to be performed by comparing the current accumulated block degradation information for each of the plurality of pixel blocks with a sensing reference degradation amount, and a sensing circuit configured to selectively perform the sensing operation for each of the plurality of pixel blocks.

Description

technical field [0001] The present invention relates to a display device, and in more detail, to an organic light emitting display device performing a sensing operation and a degradation sensing method of the organic light emitting display device. Background technique [0002] As the driving time of an organic light emitting display device increases, driving transistors and / or organic light emitting diodes of a plurality of pixels included in the organic light emitting display device may be degraded. In order to compensate for such degradation of the driving transistor and / or degradation of the organic light emitting diode, the organic light emitting display device may perform a sensing operation to sense characteristics of the driving transistor of the plurality of pixels and / or the plurality of pixels. The characteristics of the organic light emitting diode of each pixel. However, since the organic light emitting display device of the related art performs the sensing oper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3208G09G3/3225G09G3/00
CPCG09G3/3208G09G3/3225G09G3/006G09G2320/043G09G3/3233G09G2330/027G09G2320/029G09G2330/12G09G3/3283G09G2310/061G09G2320/048
Inventor 片奇铉成始德
Owner SAMSUNG DISPLAY CO LTD
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