Display apparatus

Patent metadata

Field	Value
Publication number	US-12198618-B2
Application number	US-202318541351-A
Country	US
Kind code	B2
Filing date	Dec 15, 2023
Priority date	Aug 20, 2020
Publication date	Jan 14, 2025
Grant date	Jan 14, 2025

Abstract

A display apparatus includes: a display; a display driver that drives the display such that the display displays in accordance with display data; and a host controller that transfers update display data of one screen to the display driver. The display driver includes a light-emission controller that causes a self-luminous elements to emit light, and a memory that stores the update display data of the one screen. The display driver reads the update display data on the memory after an elapse of a predetermined period of time from a drive end time at which the display controller finishes driving in accordance with the update display data and drives the screen by using the read update display data. The display driver drives the self-luminous elements once or more at a timing when the update display data from the host controller to the display driver is not updated.

First claim

What is claimed is:

1. A display device comprising:
a display having a screen in which self-luminous elements are arranged;
a display driver that drives the display such that the display displays, on the screen, based on display data; and
a host controller that transfers updated display data of the screen to the display driver when the display data is updated,
wherein:
in a first frame when first display data is transferred from the host controller, as the updated display data, to the display driver, the display driver drives the display, such that the screen of the display is refreshed based on the first display data and light is emitted from the self-luminous elements,
during a period between a time of a transfer of the first display data and a time when other display data, different from the first display data, is transferred after a predetermined period of time has elapsed:
the display driver drives the display, such that, in a generated refresh frame, the screen of the display is refreshed based on the first display data and the light is emitted from the self-luminous elements, and
in a generated pause frame, the screen of the display is not refreshed and the light is emitted from the self-luminous elements, and

the generated refresh frame is an additional refresh frame in which the screen of the display is refreshed based on the first display data and the light is emitted from the self-luminous elements, such that one or more of the self-luminous elements without a desired luminance in the first frame reach the desired luminance.

2. The display device according to claim 1 , wherein
the display driver has a memory storing the first display data for a single screen, and
the additional refresh frame is a frame in which the first display data stored in the memory is read, and in which the screen of the display is refreshed based on the read first display data and the light is emitted from the self-luminous elements.

3. The display device according to claim 1 , wherein if the updated display data is not transferred from the host controller in a frame that is immediately subsequent to the first frame after the display is driven in the first frame based on first display data, the display driver drives the display one or more times in an additional frame that is successive to the first frame based on the first display data.

4. The display device according to claim 3 , wherein a refresh rate of driving, indicating an update frequency of updating display contents on the screen based on the first display data after the predetermined period of time, is equal to or lower than a maximum frequency available in the driving.

5. The display device according to claim 1 , wherein if the updated display data is not transferred from the host controller in the first frame or more subsequent frames after the display is driven in the first frame based on the first display data, the display driver drives the display one or more times in an additional frame after an elapse of a constant period of time from the first frame based on the first display data.

6. A display device comprising:
a display having a screen in which self-luminous elements are arranged;
a display driver that drives the display such that the display displays, on the screen, based on display data; and
a host controller that transfers updated display data of the screen to the display driver when the display data is updated,
wherein:
in a first frame when first display data is transferred from the host controller, as the updated display data, to the display driver, the display driver drives the display, such that the screen of the display is refreshed based on the first display data and light is emitted from the self-luminous elements,
during a period between a time of a transfer of the first display data and a time when other display data, different from the first display data, is transferred after a predetermined period of time has elapsed:
the display driver drives the display, such that in a generated refresh frame, the screen of the display is refreshed based on the first display data and the light is emitted from the self-luminous elements, and
in a generated pause frame, the screen of the display is not refreshed and the light is emitted from the self-luminous elements, and

the generated refresh frame is an additional refresh frame in which the screen of the display of the first frame is refreshed again and the light is emitted again from the self-luminous elements.

Assignees

• Sharp Kk

Inventors

• Sato Yuichi
• Maeda Kenji
• Yamamoto Shinji
• Okamoto Takuya
• Seki Fumitaka
• Ito Masafumi
• Takazane Yohichi

Classifications

• G09G2320/0247

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• G09G3/3275

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