Electronic paper and control method of electronic paper
AssigneeSharp Kabushiki Kaisha
InventorsOsamu Uratani, Yukio Yokoyama
Life of this patent
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Abstract
Electronic paper includes a display panel, a temperature sensor, and a controlling section. The display panel contains particles which move when a voltage is applied. The temperature sensor detects a temperature. The controlling section controls a rewriting operation to rewrite an image of the display panel by applying a rewriting voltage to the color particles. If a result of detection by the temperature sensor falls within a predetermined temperature range, the controlling section performs the rewriting operation after performing a preparatory operation to apply a preparatory voltage to the color particles.
Claims10
Electronic paper comprising:
- a display panel containing color particles which move when a voltage is applied;
- a temperature sensor that detects a temperature;
- and
- a controlling section that controls a rewriting operation to rewrite an image displayed on the display panel by applying a rewriting voltage to the color particles, wherein:
- in a case that a result of a detection by the temperature sensor falls within a predetermined temperature range, the controlling section performs the rewriting operation after performing a preparatory operation that applies a preparatory voltage to the color particles,
- the predetermined temperature range is lower than a first temperature and equal to, or higher than, a second temperature,
- in a case that the result of the detection by the temperature sensor is higher than the predetermined temperature range and lower than a third temperature, the controlling section performs the rewriting operation without performing the preparatory operation, and
- in a case that the result of the detection by the temperature sensor is equal to, or higher than, the third temperature, the controlling section issues an error notification without performing the rewriting operation.
A control method performed by electronic paper, the electronic paper including a display panel containing color particles which move when a voltage is applied, the control method comprising:
- detecting a temperature;
- determining whether the detected temperature falls within a predetermined temperature range, wherein the predetermined temperature range is lower than a first temperature and equal to or higher than a second temperature;
- performing a preparatory operation that applies a preparatory voltage to the color particles in a case that the detected temperature falls within the predetermined temperature range;
- rewriting an image displayed on the display panel by applying a rewriting voltage to the color particles after performing the preparatory operation;
- rewriting the image displayed on the display panel without performing the preparatory operation in a case that the detected temperature is higher than the predetermined temperature range and lower than a third temperature;
- and
- issuing an error notification without performing the rewriting operation in a case that the detected temperature is equal to, or higher than, the third temperature.
Dependencies are inferred from the claim text.