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KR-20260064910-A - ELECTRONIC DEVICE AND METHOD OF DRIVING THE SAME

KR20260064910AKR 20260064910 AKR20260064910 AKR 20260064910AKR-20260064910-A

Abstract

In an electronic device according to the present invention, a display panel includes a first display area operating in a first mode and a second display area operating in either the first mode or a second mode. An afterimage compensation circuit compensates for a first input image signal for the first display area and a second input image signal for the second display area based on degradation information for the first and second display areas. First blocks are defined in the first display area, and second blocks having a different size from the first blocks are defined in the second display area. The afterimage compensation circuit includes an accumulation memory comprising a first storage area where first degradation data for the first blocks is accumulated and a second storage area where second degradation data for the second blocks is accumulated.

Inventors

  • 김기근

Assignees

  • 삼성디스플레이 주식회사

Dates

Publication Date
20260508
Application Date
20241030

Claims (20)

  1. A display panel comprising a first display area operating in a first mode and a second display area operating in the first mode or a second mode; and It includes a residual image compensation circuit that receives a first input image signal for the first display area and a second input image signal for the second display area, and compensates the first and second input image signals based on degradation information for the first and second display areas to generate first and second compensated image signals. A plurality of first blocks are defined in the first display area, and a plurality of second blocks having a different size from the first blocks are defined in the second display area, and The above afterimage compensation circuit is, The device includes an accumulation memory comprising a first storage area in which first degradation data for each of the plurality of first blocks is accumulated and a second storage area in which second degradation data for each of the plurality of second blocks is accumulated, and The above second storage area is, A first mode storage area in which the second degradation data for each of the second blocks is accumulated in the first mode; and An electronic device comprising a second mode storage area in which second degradation data for each of the second blocks is accumulated in the second mode.
  2. In claim 1, each of the first blocks has a size of pXq, and Each of the above second blocks has a size of pX2q, and electronic devices where p and q are integers greater than or equal to 1, respectively.
  3. In paragraph 2, the second storage area includes a plurality of unit storage areas, and The above-mentioned first mode storage area includes unit storage areas of odd-numbered columns, and The above second mode storage area is an electronic device comprising unit storage areas of even-numbered columns.
  4. In claim 1, each of the first blocks has a size of pXq, and Each of the above second blocks has a size of 2pXq, and electronic devices where p and q are integers greater than or equal to 1, respectively.
  5. In paragraph 4, the second storage area includes a plurality of unit storage areas, and The above-mentioned first mode storage area includes unit storage areas of odd-numbered rows, and The above second mode storage area is an electronic device comprising unit storage areas of even-numbered rows.
  6. In claim 1, the above-mentioned afterimage compensation circuit is, The first accumulated data stored in the first storage area is received as the degradation information, and the first input image signal is compensated based on the first accumulated data to generate the first compensated image signal. An electronic device further comprising a compensation unit that receives second accumulated data stored in the second storage area as degradation information, and compensates the second input image signal based on the second accumulated data to generate the second compensated image signal.
  7. In paragraph 6, the above-mentioned afterimage compensation circuit is, In the first mode, the second-1 accumulated data stored in the first mode storage area is read out, and the second input image signal is compensated based on the second-1 accumulated data. An electronic device that reads out second-2 accumulated data stored in the second mode storage area in the second mode and compensates the second input image signal based on the second-2 accumulated data.
  8. In claim 1, the above-mentioned afterimage compensation circuit is, Receiving a flag signal that is disabled in the first mode and enabled in the second mode, An electronic device that selects one of the first and second mode storage areas in response to the above flag signal.
  9. In claim 1, the display panel includes pixels arranged in the first and second display areas, and The above pixel is, First light-emitting element; A second light-emitting element; and An electronic device comprising a pixel circuit portion for driving the first and second light-emitting elements.
  10. In Paragraph 9, The above first mode is a first viewing angle mode that outputs an image at a first viewing angle, and The above second mode is a second viewing angle mode that outputs the image with a second viewing angle narrower than the first viewing angle, and The above display panel is, An electronic device further comprising a light path control layer disposed above the second light-emitting element and controlling the light emission range of the second light-emitting element output in the second mode.
  11. In item 10, the above optical path control layer is, An electronic device comprising a light-absorbing barrier that overlaps the second light-emitting element on a plane.
  12. In claim 9, the pixel circuit unit is, A first switching circuit electrically connected to the first light-emitting element and applying a driving current to the first light-emitting element in response to a first switching signal activated in the first mode; and An electronic device comprising a second switching circuit that is electrically connected to the second light-emitting element and applies the driving current to the second light-emitting element in response to a second switching signal that is activated in the second mode.
  13. A driving method for an electronic device comprising a first display area operating in a first mode and a second display area operating in the first mode or a second mode, A step of receiving a first input image signal for a first display area and a second input image signal for a second display area; A step of generating first and second compensated image signals by compensating the first and second input image signals based on degradation information for the first and second display areas; A step of displaying an image in the first and second display areas based on the first and second compensated image signals; and The method includes the step of accumulating first degradation data generated based on the first compensation image signal in a first storage area of the accumulation memory, and accumulating second degradation data generated based on the second compensation image signal in a second storage area of the accumulation memory. A plurality of first blocks are defined in the first display area, and a plurality of second blocks having a different size from the first blocks are defined in the second display area, and The above second storage area is, A first mode storage area in which second-1 degradation data for each of the second blocks is accumulated in the first mode; and A method for driving an electronic device comprising a second mode storage area in which second-2 degradation data for each of the second blocks is accumulated in the second mode.
  14. In paragraph 13, the step of compensating the first and second input image signals is, A step of determining whether the first and second input image signals are for the first display area or the second display area; If the first input image signal is for the first display area, a step of compensating the first input image signal based on first accumulated data for the first display area; If the second input image signal is for the second display area, a step of determining the state of the flag signal; If the above flag signal is in a deactivated state, a step of compensating the second input image signal based on the second-1 accumulated data for the second display area in the first mode; and A driving method for an electronic device comprising the step of compensating the second input image signal based on second-2 accumulated data for the second display area in the second mode when the above flag signal is in an active state.
  15. In Clause 13, the step of accumulating the first and second degradation data is, A step of determining whether the sampled signal is for the first display area or the second display area; If the sampled signal is not for the second display area, the step of generating the first degradation data for the first blocks based on the sampled signal and accumulating the first degradation data in the first storage area; If the sampled signal is for the second display area, a step of determining the state of the flag signal; If the above flag signal is in a deactivated state, the step of generating second-1 degradation data for the second blocks in the first mode and accumulating the second-1 degradation data in the first mode storage area; and A method for driving an electronic device comprising the step of, when the above flag signal is in an active state, generating second-2 degradation data for the second blocks in the second mode and accumulating the second-2 degradation data in the second mode storage area.
  16. In paragraph 13, each of the above first blocks has a size of pXq, and Each of the above second blocks has a size of pX2q, and A driving method of an electronic device where p and q are integers greater than or equal to 1, respectively.
  17. In paragraph 16, the second storage area comprises a plurality of unit storage areas, and The above-mentioned first mode storage area includes unit storage areas of odd-numbered columns, and The above second mode storage area is a driving method of an electronic device comprising unit storage areas of even-numbered columns.
  18. In paragraph 13, each of the above first blocks has a size of pXq, and Each of the above second blocks has a size of 2pXq, and A driving method of an electronic device where p and q are integers greater than or equal to 1, respectively.
  19. In paragraph 18, the second storage area comprises a plurality of unit storage areas, and The above-mentioned first mode storage area includes unit storage areas of odd-numbered rows, and The above second mode storage area is a method of driving an electronic device comprising unit storage areas of even-numbered rows.
  20. In paragraph 13, the above-mentioned first mode is a first viewing angle mode that outputs an image at a first viewing angle, and A driving method for an electronic device in which the above second mode is a second viewing angle mode that outputs the image with a second viewing angle narrower than the first viewing angle.

Description

Electronic device and method of driving the same The present invention relates to an electronic device and a method for driving the same, and more specifically, to an electronic device capable of afterimage compensation and a method for driving the same. Multimedia electronic devices such as televisions, mobile phones, tablet computers, navigation systems, and game consoles are equipped with electronic devices for displaying images. Furthermore, electronic devices are also provided inside automobiles. The electronic device may be equipped with an input sensing layer capable of providing a touch-based input method that allows the user to easily and intuitively input information or commands in addition to conventional input methods such as buttons, keyboards, and mice. FIG. 1 is a drawing illustrating the interior of a vehicle in which an electronic device according to one embodiment of the present invention is arranged. FIG. 2a is a diagram showing the state in which the first and second display areas of an electronic device according to one embodiment of the present invention operate in a first mode. FIG. 2b is a diagram showing a state in which a first display area of an electronic device according to an embodiment of the present invention operates in a first mode and a second display area operates in a second mode. FIG. 2c is a diagram showing a state in which a first display area of an electronic device according to an embodiment of the present invention operates in a first mode, and all switching areas of a second display area operate in a second mode. FIG. 3a is a diagram showing the state in which the first and second display areas of an electronic device according to one embodiment of the present invention operate in a first mode. FIG. 3b is a diagram showing a state in which a first display area of an electronic device according to an embodiment of the present invention operates in a first mode, and a first and second mode switching area of a second display area operates in a second mode. FIG. 4a is a cross-sectional view of an electronic device according to one embodiment of the present invention. FIG. 4b is a cross-sectional view of an electronic device according to one embodiment of the present invention. FIG. 5a is a cross-sectional view showing an enlarged portion of the electronic device illustrated in FIG. 4a. FIG. 5b is a cross-sectional view showing an enlarged portion of the electronic device illustrated in FIG. 4b. FIG. 6 is a block diagram of a display panel according to one embodiment of the present invention. FIG. 7 is a circuit diagram of a second pixel according to one embodiment of the present invention. FIG. 8 is a waveform diagram for explaining the operation of the second pixel shown in FIG. 7. FIG. 9a is a diagram showing the state in which wide pixels are turned on in a first mode according to an embodiment of the present invention. FIG. 9b is a diagram showing the state in which narrow pixels are turned on in a second mode according to an embodiment of the present invention. FIG. 10a is a cross-sectional view taken along the cutting line I-I' shown in FIG. 9a. FIG. 10b is a cross-sectional view taken along the cutting line II-II' shown in FIG. 9b. FIG. 11a is a block diagram of an electronic device according to one embodiment of the present invention. FIG. 11b is a block diagram of a residual image compensation circuit according to one embodiment of the present invention. FIGS. 12a and FIGS. 12b are drawings showing the state of a flag signal according to the operating mode of an electronic device. FIG. 13a is a diagram illustrating a sampling process according to the modes of the first and second display areas according to an embodiment of the present invention. FIG. 13b is a diagram illustrating a sampling process according to the modes of the first and second display areas according to an embodiment of the present invention. FIG. 14a is a diagram illustrating a sampling process according to the modes of the first and second display areas according to an embodiment of the present invention. FIG. 14b is a diagram illustrating a sampling process according to the modes of the first and second display areas according to an embodiment of the present invention. FIGS. 15a and FIGS. 15b are drawings showing the states of the first and second flag signals according to the operating mode of the electronic device. FIG. 16 is a diagram showing a sampling process according to the modes of the first and second display areas according to an embodiment of the present invention. FIG. 17 is a flowchart illustrating the operation process of an electronic device according to one embodiment of the present invention. FIG. 18a is a flowchart illustrating the signal compensation method in step S120 shown in FIG. 17. FIG. 18b is a flowchart illustrating the method for accumulating degradation data in step S140 shown in FIG. 17. In this specification, where a component (or region, layer, part, etc.)