SEMICONDUCTOR DEVICE, METHOD FOR DRIVING SEMICONDUCTOR DEVICE, AND PROGRAM

• US 20160260400A1
• Filed: 02/25/2016
• Published: 09/08/2016
• Est. Priority Date: 03/03/2015
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: YAMAZAKI, Shunpei, MIYAKE, Hiroyuki, HIRAKATA, Yoshiharu
• Granted Patent: US 10,008,167 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G09G 2320/0686 with two or more screen areas displaying information with different brightness or colours
• CPC Class Codes: G09G 2354/00 Aspects of interface with display user
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence

Abstract

To reduce eye fatigue of a user and perform eye-friendly display. An information processing device provided with a display portion and an input portion has a first mode in which the contrast or the brightness of a displayed image is adjusted and a second mode in which the contrast or the brightness of a displayed image is set to the initial set value. In the case where an image is displayed and a signal such as a scroll instruction is input to the input portion, the contrast or the brightness of the displayed image is adjusted depending on the content of the scroll instruction; thus, the information processing device can perform eye-friendly display.

Claims

1. A semiconductor device comprising:

a pixel portion configured to display image information in a first mode and a second mode;

an input portion configured to sense an input by a user; and

a light supply portion configured to emit light to the pixel portion with first luminance in the first mode and with second luminance in the second mode,

wherein the first mode is selected when the input has higher speed than a predetermined value and the second mode is selected when the input has lower speed than the predetermined value, and

wherein the first luminance is lower than the second luminance.

2. The semiconductor device according to claim 1,

wherein the input is one of swipe, drag, scroll, and page-turning.

3. The semiconductor device according to claim 1,

wherein the pixel portion comprises a liquid crystal element.

4. The semiconductor device according to claim 1,

wherein the pixel portion comprises a plurality of pixels,

wherein the plurality of pixels each comprise a transistor, and

wherein a semiconductor layer of the transistor where a channel is formed comprises an oxide semiconductor.

5. The semiconductor device according to claim 1,

wherein the pixel portion comprises a plurality of pixels,

wherein the plurality of pixels each comprise a transistor, and

wherein a semiconductor layer of the transistor where a channel is formed comprises amorphous silicon or polycrystalline silicon.

6. The semiconductor device according to claim 1,

wherein the input portion comprises at least one of a keyboard, a hardware button, a pointing device, a touch sensor, an imaging device, an audio input device, a viewpoint input device, and a pose detection device.

7. The semiconductor device according to claim 1,

wherein the pixel portion and the input portion form a touch panel.

8. A semiconductor device comprising:

a pixel portion configured to display image information in a first mode and a second mode;

a light supply portion configured to emit light to the pixel portion with first luminance in the first mode and with second luminance in the second mode; and

an arithmetic device configured to supply a control signal to the light supply portion and an image signal for displaying the image information in the pixel portion,

wherein the first mode is selected depending on the control signal when an area of a dark portion in the image information is larger than a predetermined value and the second mode is selected depending on the control signal when the area of the dark portion in the image information is smaller than the predetermined value, and

wherein the first luminance is lower than the second luminance.

9. The semiconductor device according to claim 8,

wherein the pixel portion comprises a liquid crystal element.

10. The semiconductor device according to claim 8,

wherein the pixel portion comprises a plurality of pixels,

wherein the plurality of pixels each comprise a transistor, and

wherein a semiconductor layer of the transistor where a channel is formed comprises an oxide semiconductor.

11. The semiconductor device according to claim 8,

wherein the pixel portion comprises a plurality of pixels,

wherein the plurality of pixels each comprise a transistor, and

wherein a semiconductor layer of the transistor where a channel is formed comprises amorphous silicon or polycrystalline silicon.

12. The semiconductor device according to claim 8,

wherein the pixel portion functions as a touch panel.

13. A semiconductor device comprising:

a pixel portion configured to display image information in a first mode and a second mode;

a light supply portion configured to emit light to the pixel portion with first luminance in the first mode and with second luminance in the second mode; and

an arithmetic device configured to supply a control signal to the light supply portion and an image signal for displaying the image information in the pixel portion,

wherein the first mode is selected depending on the control signal when a contrast of the image information exceeds a predetermined value and the second mode is selected depending on the control signal when the contrast of the image information does not exceed the predetermined value, and

wherein the first luminance is lower than the second luminance.

14. The semiconductor device according to claim 13,

wherein the pixel portion comprises a liquid crystal element.

15. The semiconductor device according to claim 13,

wherein the pixel portion comprises a plurality of pixels,

wherein the plurality of pixels each comprise a transistor, and

wherein a semiconductor layer of the transistor where a channel is formed comprises an oxide semiconductor.

16. The semiconductor device according to claim 13,

wherein the pixel portion comprises a plurality of pixels,

wherein the plurality of pixels each comprise a transistor, and

wherein a semiconductor layer of the transistor where a channel is formed comprises amorphous silicon or polycrystalline silicon.

17. The semiconductor device according to claim 13,

wherein the pixel portion functions as a touch panel.