Burn-in reduction apparatus, self-luminous display apparatus, image processing apparatus, electronic device, burn-in reduction method, and computer program
AssigneeSony Corporation
InventorMitsuru Tada
Life of this patent
Estimating the term…
Abstract
A burn-in reduction apparatus, includes an illumination sensor configured to detect brightness of outside light incident on an area near a display screen; and a contrast control section configured to control a drive condition of a display device in accordance with the detected brightness to reduce a contrast ratio of display brightness steplessly or in a stepwise manner.
Claims21
1-19. (canceled)
A self-luminous display apparatus, comprising:
- a self-luminous display device including a driving circuitry and a plurality of pixels responsive to the driving circuitry;
- an illumination sensor configured to:
- detect an outside brightness of a display screen, and
- generate a brightness signal based on the detected outside brightness;
- and
- a contrast control circuitry configured to provide a first control signal and a second control signal to the self-luminous display device, wherein the first control signal and the second control signal are dependent on the brightness signal,
- wherein the driving circuitry is configured to variably control:
- an emission duty ratio of the plurality of pixels based on the first control signal, and
- a reference voltage based on the second control signal, wherein at least one of a white level and a black level of the plurality of pixels is dependent on the reference voltage.
The self-luminous display apparatus according to claim 21, wherein the contrast control circuitry is further configured to change a gradation conversion characteristic based on the brightness signal.
The self-luminous display apparatus according to claim 22, wherein:
- the self-luminous display device includes a plurality of data lines coupled to the plurality of pixels;
- and
- a video signal is converted to a voltage signal provided on the plurality of data lines based on the gradation conversion characteristic.
The self-luminous display apparatus according to claim 24, wherein the reference voltage is a reference for the data line driver, and corresponds to a voltage signal for the white level or the black level.
The self-luminous display apparatus according to claim 28, wherein the driving circuitry includes a scan driver configured to provide control pulses for the switching transistor of each of the plurality of pixels.
A self-luminous display apparatus comprising:
- a self-luminous display panel including a plurality of pixels responsive to control circuitry;
- an illumination sensor configured to:
- detect an outside brightness of the self-luminous display panel, and
- generate a brightness signal based on the detected outside brightness;
- and
- the control circuitry configured to:
- generate a first control signal and a second control signal based on the brightness signal,
- variably control an emission duty ratio of the plurality of pixels based on the first control signal;
- and
- variably control a reference voltage based on the second control signal, wherein at least one of a white level and a black level of the plurality of pixels is based on the reference voltage.
The self-luminous display apparatus according to claim 31, wherein the control circuitry is further configured to change a gradation conversion characteristic based on the brightness signal.
The self-luminous display apparatus according to claim 32, wherein:
- the self-luminous display panel includes a plurality of data lines coupled to the plurality of pixels, and
- a video signal is converted to a voltage signal provided on the plurality of data lines based on the gradation conversion characteristic.
The self-luminous display apparatus according to claim 34, wherein the control circuitry is configured to:
- set the emission duty ratio to a third value when the illumination sensor detects the first brightness;
- and
- set the emission duty ratio to a fourth value smaller than the third value when the illumination sensor detects the third brightness darker than the first brightness.
The self-luminous display apparatus according to claim 36, wherein the illumination sensor is arranged at a middle region of the upper periphery of the self-luminous display panel.
A luminance control apparatus suitable for a self-luminescent device, comprising:
- an illumination sensor;
- and
- a control circuitry, wherein the illumination sensor is configured to:
- detect a brightness of an ambient light intensity, and
- generate a brightness signal based on the detected brightness;
- and
- the control circuitry is configured to:
- generate a first control signal and a second control signal based on the brightness signal,
- variably control an emission duty ratio of the self-luminescent device based on the first control signal, and
- variably control a reference voltage on which at least one of a maximum luminance level and a minimum luminance level of the self-luminescent device is dependent, based on the second control signal.
The luminance control apparatus according to claim 39, wherein the self-luminescent device includes a plurality of organic electroluminescent (EL) elements arranged in a matrix form.
Dependencies are inferred from the claim text.