Electronic device and control method

Patent metadata

Field	Value
Publication number	US-9858872-B2
Application number	US-201514799736-A
Country	US
Kind code	B2
Filing date	Jul 15, 2015
Priority date	Jul 15, 2015
Publication date	Jan 2, 2018
Grant date	Jan 2, 2018

Abstract

An electronic is provided. An input unit provides a multimedia content. An image processor transforms the multimedia content into frame data. A display unit displays images including blue pixels, green pixels, and red pixels. A backlight unit generates a source light. A source light includes a deep blue-light of a low blue waveband and a far blue-light of a high blue waveband. A display panel transforms the source light into the images based on the frame data and emits the images through a surface. An optical path travels through the backlight unit and the surface. A deep blue-light filter is arranged in the optical path through which the source light passes, for restricting a light transmission rate in the low blue waveband. The image processor adjusts a color hue of the frame data to be transformed by the display panel.

First claim

What is claimed is:

1. An electronic device, comprising:
an input unit, for providing a multimedia content;
an image processor, for transforming the multimedia content into frame data; and
a display unit for displaying images including blue pixels, green pixels, and red pixels, comprising:
a backlight unit for generating a source light, wherein the source light includes a deep blue-light of a low blue waveband and a far blue-light of a high blue waveband;
a display panel, for transforming the source light into the images based on the frame data and emitting the images through a surface, wherein an optical path travels through the backlight unit and the surface;
a deep blue-light filter, arranged in the optical path through which the source light passes, for restricting a light transmission rate in the low blue waveband; and
wherein the image processor adjusts a color hue of the frame data to be transformed by the display panel such that a weight of the blue pixels of the image is compensated, and wherein the image processor reduces gray levels provided to the red and green pixels.

2. The electronic device as claimed in claim 1 , wherein the low blue waveband comprises a specific wavelength, and the specific wavelength is 435 nm.

3. The electronic device as claimed in claim 1 , wherein the deep blue-light filter restricts 70% of the light transmission rate in the low blue waveband.

4. The electronic device as claimed in claim 1 , wherein the backlight unit comprises:
a light emitting diode configured to generate a white-light;
a light guide guiding the white-light; and
a brightness enhance film centralize the light traveling through the light guide.

5. The electronic device as claimed in claim 4 , wherein the deep blue-light filter is disposed on the brightness enhance film .

6. The electronic device as claimed in claim 4 , wherein the optical path travels through the light emitting diode, the light guide, and the brightness enhance film.

7. The electronic device as claimed in claim 1 , wherein the display panel comprises a cover glass and a liquid-crystal cell, and the deep blue-light filter is disposed between the cover glass and the liquid-crystal cell.

8. The electronic device as claimed in claim 7 , wherein the display panel further comprises a touch film disposed between the cover glass and the liquid-crystal cell, and the deep blue-light filter is integrated into the touch film.

9. The electronic device as claimed in claim 8 , wherein the optical path travels through the liquid-crystal cell, the touch film, and the cover glass.

10. The electronic device as claimed in claim 7 , wherein the display panel further comprises a touch film disposed between the cover glass and the liquid-crystal cell, and the deep blue-light filter is disposed between the cover glass and the touch film.

11. The electronic device as claimed in claim 7 , wherein the display panel further comprises a touch film disposed between the cover glass and the liquid-crystal cell, and the deep blue-light filter is disposed between the touch film and the liquid-crystal cell.

12. The electronic device as claimed in claim 11 , wherein the deep blue-light filter is a color filter to filter red-light, green-light and blue-light component of the source light.

13. The electronic device as claimed in claim 1 , wherein the deep blue-light filter is a multilayer coating.

14. The electronic device as claimed in claim 1 , wherein the deep blue-light filter is constituted by absorbing materials.

15. The electronic device as claimed in claim 1 , wherein the image processor increases voltage levels corresponding to gray levels provided to the blue pixels to adjust the color hue of the frame data.

16. The electronic device as claimed in claim 1 , wherein the image processor reduces gray levels provided to the red and green pixels to adjust the color hue of the frame data.

17. A control method controlling an electronic device and comprising:
providing a multimedia content;
transforming the multimedia content into frame data; and
displaying images including blue pixels, green pixels, and red pixels, wherein the step of display the images comprises:
activating a backlight unit for generating a source light, wherein the source light includes a deep blue-light of a low blue waveband and a far blue-light of a high blue waveband;
activating a display panel, for transforming the source light into the images based on the frame data and emitting the images through a surface, wherein an optical path travels through the backlight unit and the surface;
arranging a deep blue-light filter in the optical path through which the source light passes, for restricting a light transmission rate in the low blue waveband; and
adjusting a color hue of the frame data to be transformed by the display panel such that a weight of the blue pixels of the image is compensated, wherein gray levels provided to the red and green pixels are reduced.

18. The control method as claimed in claim 17 , wherein the low blue waveband comprises a specific wavelength, and the specific wavelength is 435 nm.

19. The control method as claimed in claim 17 , wherein 70% of the light transmission rate in the low blue waveband is restricted.

20. The control method as claimed in claim 17 , wherein the step of adjusting the color hue of the frame data is to increase voltage levels corresponding to gray levels provided to the blue pixels.

21. The control method as claimed in claim 17 , wherein the step of adjusting the color hue of the frame data is to reduce gray levels provided to the red and green pixels.

22. A display system, comprising:
an electronic device, comprising:
an input unit, for providing a multimedia content;
an image processor, for transforming the multimedia content into frame data;
a display unit for displaying images including blue pixels, green pixels, and red pixels, comprising:
a backlight unit for generating a source light, wherein the source light includes a deep blue-light of a low blue waveband and a far blue-light of a high blue waveband;
a display panel, for transforming the source light into the images based on the frame data and emitting the images through a surface;
a cover, comprising:
a deep blue-light filter, for restricting a light transmission rate in the low blue waveband; and
a covering mechanism for movably placing the cover on the surface of the display unit,
wherein the image processor is configured to:
determine that the cover has been placed on the surface; and
adjust a color hue of the frame data to be transformed by the display panel such that a weight of the blue pixels of the image is compensated in response to determining that the cover has been placed on the surface.

23. The display system as claimed in claim 22 , wherein when the brightness of an external light illumining the surface exceeds a predetermined brightness, the image processor stops adjusting the color hue of the frame data to be transformed by the display panel.

24. The display system as claimed in claim 22 , wherein the low blue waveband comprises a specific wavelength, and the specific wavelength is 435 nm.

25. The display system as claimed in claim 22 , wherein the deep blue-light filter restricts 70% of the light transmission rate in the low blue waveband.

26. The display system as claimed in claim 22 , wherein the image processor increases volt

Assignees

• Htc Corp

Inventors

• Chen Yang-Lin
• Lo Cheng
• Chang Fu-Tsung
• Peng Hsi-Chieh
• Peng Yu-Chun

Classifications

• G09G3/3611

  Control of matrices with row and column drivers · CPC title

• G09G3/3413 Primary

  Details of control of colour illumination sources · CPC title

• G09G2320/0666

  for control of colour parameters, e.g. colour temperature · CPC title

• G09G3/3607 Primary

  for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels (display of colours in flat matrix panels other than liquid crystal displays G09G3/2003; grey scales specific for television H04N3/127) · CPC title

• G09G2310/027

  Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters · CPC title