Display device, input/output device, and data processing device

• US 10,451,912 B2
• Filed: 07/12/2017
• Issued: 10/22/2019
• Est. Priority Date: 07/15/2016
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Yamazaki, Shunpei, Ikeda, Hisao, Isaka, Fumito
• Primary Examiner(s): Watko, Julie Anne
• Application Number:
  US15/647,787
• Publication Number:
  US 20180017818A1
• Time in Patent Office: 832 Days
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133502 Antiglare, refractive index matching layers
• CPC Class Codes: G02F 1/133504 Diffusing, scattering, diffracting elements associated to illuminating devices G02F1/133606
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/136 Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit G02F1/135 takes precedence
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line
• CPC Class Codes: G02F 2201/44 Arrangements combining different electro-active layers, e.g. electrochromic, liquid crystal or electroluminescent layers
• CPC Class Codes: G09G 2300/0456 with a reflective area and a transmissive area combined in one pixel, such as in transflectance pixels
• CPC Class Codes: H10K 19/20 comprising components having an active region that includes an inorganic semiconductor
• CPC Class Codes: H10K 59/121 characterised by the geometry or disposition of pixel elements

Abstract

A display device includes a display panel and a control portion. The control portion has a function of receiving image data, and a function of generating and supplying first data and second data on the basis of the image data. The display panel includes a pixel and an optical element. The pixel includes a first display element and a second display element. The second display element includes a region adjacent to the first display element. The optical element includes a first region overlapping with the second display element. The first region has a function of directing light which enters a region overlapping with the second display element to the first display element. The first display element is a reflective display element. The second display element is a light-emitting element.

Claims

1. A display device comprising:

a display panel; and

a control portion,

wherein the control portion is configured to receive image data and control data,

wherein the control portion is configured to generate first data and second data on the basis of the image data,

wherein the control portion is configured to supply the first data and the second data,

wherein the display panel is configured to receive the first data and the second data,

wherein the display panel comprises a pixel and an optical element,

wherein the pixel comprises a first display element and a second display element,

wherein the second display element comprises a region adjacent to the first display element,

wherein the optical element comprises a first region overlapping with the second display element,

wherein the first region is configured to direct light which enters the first region overlapping with the second display element to the first display element,

wherein the first display element is configured to display an image on the basis of the first data,

wherein the first display element is a reflective display element,

wherein the second display element is configured to display an image on the basis of the second data, and

wherein the second display element is a light-emitting element.

2. The display device according to claim 1, wherein the optical element has a moth-eye structure on a surface.

3. The display device according to claim 1,

wherein the pixel comprises a first conductive film, a second conductive film, an insulating film, a pixel circuit, the first display element, and the second display element,

wherein the second conductive film comprises a region overlapping with the first conductive film,

wherein the insulating film comprises a region positioned between the first conductive film and the second conductive film,

wherein the insulating film comprises an opening,

wherein the first conductive film is electrically connected to the first display element,

wherein the second conductive film is electrically connected to the first conductive film in the opening,

wherein the second conductive film is electrically connected to the pixel circuit,

wherein the second display element is electrically connected to the pixel circuit,

wherein the second display element is configured to emit light toward the insulating film, and

wherein the second display element is provided so that display using the second display element can be seen from part of a region from which display using the first display element can be seen.

4. The display device according to claim 1,

wherein the display panel comprises one group of pixels, another group of pixels, a scan line, and a signal line,

wherein the one group of pixels include the pixel,

wherein the one group of pixels are arranged in a row direction,

wherein the another group of pixels include the pixel,

wherein the another group of pixels are arranged in a column direction that intersects the row direction,

wherein the scan line is electrically connected to the one group of pixels, and

wherein the signal line is electrically connected to the another group of pixels.

5. An input/output device comprising:

the display device according to claim 1; and

an input portion,

wherein the input portion is configured to sense an object that approaches a region overlapping with the display panel.

6. The input/output device according to claim 5,

wherein the input portion comprises a region overlapping with the display panel,

wherein the input portion comprises a control line, a sensing signal line, and a sensing element,

wherein the control line is configured to supply a control signal,

wherein the sensing signal line is configured to receive a sensing signal,

wherein the sensing element is electrically connected to the control line and the sensing signal line,

wherein the sensing element has a light-transmitting property

wherein the sensing element comprises a first electrode and a second electrode,

wherein the first electrode is electrically connected to the control line,

wherein the second electrode is electrically connected to the sensing signal line

wherein the second electrode is provided so that an electric field part of which is blocked by an object approaching the region overlapping with the display panel is generated between the second electrode and the first electrode,

wherein the sensing element is configured to supply the sensing signal which changes in accordance with the control signal and a distance between the sensing element and an object approaching a region overlapping with the display panel.

7. A data processing device comprising:

at least one of a keyboard, a hardware button, a pointing device, a touch sensor, an illuminance sensor, an imaging device, an audio input device, a viewpoint input device, and a posture determination device; and

the display device according to claim 1.

8. A display device comprising:

a display panel; and

a control portion,

wherein the control portion is configured to receive image data and control data,

wherein the control portion is configured to generate first data and second data on the basis of the image data,

wherein the control portion is configured to supply the first data and the second data,

wherein the display panel is configured to receive the first data and the second data,

wherein the display panel comprises a pixel and an optical element,

wherein the pixel comprises a first display element, a second display element, and a coloring film,

wherein the second display element comprises a region overlapping with or adjacent to the first display element,

wherein the coloring film comprises a region adjacent to the second display element,

wherein the optical element comprises a second region overlapping with the second display element,

wherein the second region is configured to direct light which enters the second region overlapping with the second display element to the coloring film,

wherein the first display element is configured to display an image on the basis of the first data,

wherein the first display element is a reflective display element,

wherein the second display element is configured to display an image on the basis of the second data, and

wherein the second display element is a light-emitting element.

9. The display device according to claim 8, wherein the second region is shaped so as not to block light which enters the first display element.

10. The display device according to claim 8, wherein the optical element has a moth-eye structure on a surface.

11. The display device according to claim 8,

wherein the pixel comprises a first conductive film, a second conductive film, an insulating film, a pixel circuit, the first display element, and the second display element,

wherein the second conductive film comprises a region overlapping with the first conductive film,

wherein the insulating film comprises a region positioned between the first conductive film and the second conductive film,

wherein the insulating film comprises an opening,

wherein the first conductive film is electrically connected to the first display element,

wherein the second conductive film is electrically connected to the first conductive film in the opening,

wherein the second conductive film is electrically connected to the pixel circuit,

wherein the second display element is electrically connected to the pixel circuit,

wherein the second display element is configured to emit light toward the insulating film, and

wherein the second display element is provided so that display using the second display element can be seen from part of a region from which display using the first display element can be seen.

12. The display device according to claim 8,

wherein the display panel comprises one group of pixels, another group of pixels, a scan line, and a signal line,

wherein the one group of pixels include the pixel,

wherein the one group of pixels are arranged in a row direction,

wherein the another group of pixels include the pixel,

wherein the another group of pixels are arranged in a column direction that intersects the row direction,

wherein the scan line is electrically connected to the one group of pixels, and

wherein the signal line is electrically connected to the another group of pixels.

13. An input/output device comprising:

the display device according to claim 8; and

an input portion,

wherein the input portion is configured to sense an object that approaches a region overlapping with the display panel.

14. The input/output device according to claim 13,

wherein the input portion comprises a region overlapping with the display panel,

wherein the input portion comprises a control line, a sensing signal line, and a sensing element,

wherein the control line is configured to supply a control signal,

wherein the sensing signal line is configured to receive a sensing signal,

wherein the sensing element is electrically connected to the control line and the sensing signal line,

wherein the sensing element has a light-transmitting property

wherein the sensing element comprises a first electrode and a second electrode,

wherein the first electrode is electrically connected to the control line,

wherein the second electrode is electrically connected to the sensing signal line

wherein the second electrode is provided so that an electric field part of which is blocked by an object approaching the region overlapping with the display panel is generated between the second electrode and the first electrode,

wherein the sensing element is configured to supply the sensing signal which changes in accordance with the control signal and a distance between the sensing element and an object approaching a region overlapping with the display panel.

15. A data processing device comprising:

at least one of a keyboard, a hardware button, a pointing device, a touch sensor, an illuminance sensor, an imaging device, an audio input device, a viewpoint input device, and a posture determination device; and

the display device according to claim 8.

16. A display device comprising:

a display panel; and

a control portion,

wherein the control portion is configured to receive image data and control data,

wherein the control portion is configured to generate first data and second data on the basis of the image data,

wherein the control portion is configured to supply the first data and the second data,

wherein the display panel is configured to receive the first data and the second data,

wherein the display panel comprises a pixel and an optical element,

wherein the pixel comprises a first display element, a second display element, and a coloring film,

wherein the coloring film comprises a region adjacent to the first display element,

wherein the optical element comprises a third region overlapping with the coloring film,

wherein the third region is configured to direct external light directed to the third region overlapping with the coloring film to the first display element,

wherein the first display element is configured to display an image on the basis of the first data,

wherein the first display element is a reflective display element,

wherein the second display element is configured to display an image on the basis of the second data, and

wherein the second display element is a light-emitting element.

17. The display device according to claim 16, wherein the optical element has a moth-eye structure on a surface.

18. The display device according to claim 16,

wherein the pixel comprises a first conductive film, a second conductive film, an insulating film, a pixel circuit, the first display element, and the second display element,

wherein the second conductive film comprises a region overlapping with the first conductive film,

wherein the insulating film comprises a region positioned between the first conductive film and the second conductive film,

wherein the insulating film comprises an opening,

wherein the first conductive film is electrically connected to the first display element,

wherein the second conductive film is electrically connected to the first conductive film in the opening,

wherein the second conductive film is electrically connected to the pixel circuit,

wherein the second display element is electrically connected to the pixel circuit,

wherein the second display element is configured to emit light toward the insulating film, and

wherein the second display element is provided so that display using the second display element can be seen from part of a region from which display using the first display element can be seen.

19. The display device according to claim 16,

wherein the display panel comprises one group of pixels, another group of pixels, a scan line, and a signal line,

wherein the one group of pixels include the pixel,

wherein the one group of pixels are arranged in a row direction,

wherein the another group of pixels include the pixel,

wherein the another group of pixels are arranged in a column direction that intersects the row direction,

wherein the scan line is electrically connected to the one group of pixels, and

wherein the signal line is electrically connected to the another group of pixels.

20. An input/output device comprising:

the display device according to claim 16; and

an input portion,

wherein the input portion is configured to sense an object that approaches a region overlapping with the display panel.

21. The input/output device according to claim 20,

wherein the input portion comprises a region overlapping with the display panel,

wherein the input portion comprises a control line, a sensing signal line, and a sensing element,

wherein the control line is configured to supply a control signal,

wherein the sensing signal line is configured to receive a sensing signal,

wherein the sensing element is electrically connected to the control line and the sensing signal line,

wherein the sensing element has a light-transmitting property

wherein the sensing element comprises a first electrode and a second electrode,

wherein the first electrode is electrically connected to the control line,

wherein the second electrode is electrically connected to the sensing signal line

wherein the second electrode is provided so that an electric field part of which is blocked by an object approaching the region overlapping with the display panel is generated between the second electrode and the first electrode,

wherein the sensing element is configured to supply the sensing signal which changes in accordance with the control signal and a distance between the sensing element and an object approaching a region overlapping with the display panel.

22. A data processing device comprising:

at least one of a keyboard, a hardware button, a pointing device, a touch sensor, an illuminance sensor, an imaging device, an audio input device, a viewpoint input device, and a posture determination device; and

the display device according to claim 16.