DISPLAY DEVICE AND PROGRAM

• US 20140111558A1
• Filed: 10/18/2013
• Published: 04/24/2014
• Est. Priority Date: 10/23/2012
• Status: Abandoned Application

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: ISHITANI, Tetsuji, Hirakata, Yoshiharu, Yamazaki, Shunpei
• Application Number:
  US14/056,986
• Publication Number:
  US 20140111558A1
• Time in Patent Office: Days
• US Class Current: 345/690
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 2320/062 Adjustment of illumination source parameters
• CPC Class Codes: G09G 2320/0666 for control of colour parameters, e.g. colour temperature
• CPC Class Codes: G09G 2354/00 Aspects of interface with display user
• CPC Class Codes: G09G 2370/08 Details of image data interface between the display device controller and the data line driver circuit
• CPC Class Codes: G09G 3/3413 Details of control of colour illumination sources
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence
• CPC Class Codes: G09G 3/3666 with the matrix divided into sections
• CPC Class Codes: G09G 5/06 using colour palettes, e.g. look-up tables
• CPC Class Codes: G09G 5/10 Intensity circuits

Abstract

Provided are a display device and the driving method of the display device with which eye fatigue of a user in long-term use of the display device is reduced. The display device includes a display unit, a detection unit, and a control unit. The detection unit detects a condition of a user'"'"'s eye to obtain detected information and transmits the detected information to the control unit. The control unit extracts fatigue information on the user from the detected information and drives the display unit such that a luminance of light with a wavelength shorter than or equal to a predetermined wavelength among light emitted from the display unit is changed on the basis of the fatigue information.

Claims

1. A display device comprising:

a display unit;

a detection unit; and

a control unit,

wherein the detection unit is configured to detect a condition of a user'"'"'s eye to obtain first information and transmit the first information to the control unit, and

wherein the control unit is configured to extract second information from the first information and drive the display unit such that a luminance of light with a wavelength shorter than or equal to a predetermined wavelength among light emitted from the display unit is changed on the basis of the second information.

2. The display device according to claim 1, wherein the control unit is configured to drive the display unit such that a display refresh rate is changed on the basis of the second information.

3. The display device according to claim 2,

wherein the display refresh rate has two different modes,

wherein the display refresh rate in a first mode is higher than or equal to 30 Hz and lower than 960 Hz, and

wherein the display refresh rate in a second mode is higher than or equal to 1.16×

10<sup>−

5</sup> Hz and lower than or equal to 10 Hz.

4. The display device according to claim 1,

wherein the control unit includes a storage unit storing setting information, and

wherein the control unit is configured to drive the display unit on the basis of both the second information and the setting information.

5. The display device according to claim 1, wherein the predetermined wavelength is 420 nm.

6. The display device according to claim 1, wherein the second information is fatigue information on the user.

7. A storage medium storing a program for driving a display device,

the display device including a display unit, a detection unit, a control unit, and an arithmetic device,

the program comprising the steps of:

making the detection unit detect a condition of a user'"'"'s eye to obtain first information and transmit the first information to the control unit; and

making the control unit extract second information from the first information and drive the display unit such that a luminance of light with a wavelength shorter than or equal to a predetermined wavelength among light emitted from the display unit is changed on the basis of the second information,

wherein the arithmetic device executes the program.

8. The storage medium according to claim 7, wherein the program further comprises the step of making the control unit drive the display unit such that a display refresh rate is changed on the basis of the second information.

9. The storage medium according to claim 8,

wherein the display refresh rate has two different modes,

wherein the display refresh rate in a first mode is higher than or equal to 30 Hz and lower than 960 Hz, and

wherein the display refresh rate in a second mode is higher than or equal to 1.16×

10<sup>−

5</sup> Hz and lower than or equal to 10 Hz.

10. The storage medium according to claim 7,

wherein the control unit includes a storage unit,

wherein the program further comprises the step of making the control unit read out setting information stored in advance in the storage unit, and

wherein the control unit drives the display unit on the basis of both the second information and the setting information.

11. The storage medium according to claim 10, wherein the program further comprises the step of making the control unit drive the display unit so that a display refresh rate is changed on the basis of both the second information and the setting information.

12. The storage medium according to claim 11,

wherein the display refresh rate has two different modes,

wherein the display refresh rate in a first mode is higher than or equal to 30 Hz and lower than 960 Hz, and

wherein the display refresh rate in a second mode is higher than or equal to 1.16×

10<sup>−

5</sup> Hz and lower than or equal to 10 Hz.

13. The storage medium according to claim 7, wherein the predetermined wavelength is 420 nm.

14. The storage medium according to claim 7, wherein the second information is fatigue information on the user.

15. A method for driving a display device,

the display device including a display unit, a detection unit, and a control unit,

the method comprising the steps of:

detecting a condition of a user'"'"'s eye by the detection unit to obtain first information;

transmitting the first information from the detection unit to the control unit;

extracting second information from the first information by the control unit; and

driving the display unit by the control unit such that a luminance of light with a wavelength shorter than or equal to a predetermined wavelength among light emitted from the display unit is changed on the basis of the second information.

16. The method according to claim 15, further comprising the step of:

driving the display unit by the control unit such that a display refresh rate is changed on the basis of the second information.

17. The method according to claim 16,

wherein the display refresh rate has two different modes,

wherein the display refresh rate in a first mode is higher than or equal to 30 Hz and lower than 960 Hz, and

wherein the display refresh rate in a second mode is higher than or equal to 1.16×

10<sup>−

5</sup> Hz and lower than or equal to 10 Hz.

18. The method according to claim 15,

wherein the control unit includes a storage unit storing setting information, and

wherein the control unit drives the display unit on the basis of both the second information and the setting information.

19. The method according to claim 15, wherein the predetermined wavelength is 420 nm.

20. The method according to claim 15, wherein the second information is fatigue information on the user.