Display unit and electronic apparatus

• US 10,444,559 B2
• Filed: 09/14/2015
• Issued: 10/15/2019
• Est. Priority Date: 10/01/2014
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Yoshinaga, Tadahiko
• Primary Examiner(s): Raleigh, Donald L
• Application Number:
  US15/512,062
• Publication Number:
  US 20170276997A1
• Time in Patent Office: 1,492 Days
• CPC Class Codes: G02F 1/1335 Structural association of cells with optical devices, e.g. polarisers or reflectors
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 2201/52 RGB geometrical arrangements
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 2300/0452 Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
• CPC Class Codes: G09G 2300/0842 forming a memory circuit, e.g. a dynamic memory with one capacitor
• CPC Class Codes: G09G 3/2003 Display of colours specific for liquid crystal displays G09G3/3607
• CPC Class Codes: G09G 3/3233 with pixel circuitry controlling the current through the light-emitting element
• CPC Class Codes: G09G 3/3607 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 Class Codes: H05B 33/12 Light sources with substantially two-dimensional radiating surfaces
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 59/351 comprising more than three subpixels, e.g. red-green-blue-white [RGBW]
• CPC Class Codes: H10K 59/38 comprising colour filters or colour changing media [CCM]
• CPC Class Codes: H10K 71/00 Manufacture or treatment specially adapted for the organic devices covered by this subclass
• CPC Class Codes: H10K 71/16 using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering
• CPC Class Codes: H10K 71/40 Thermal treatment, e.g. annealing in the presence of a solvent vapour

Abstract

A first display unit according to the disclosure includes a first pixel and a second pixel each having a light emitting layer, and a color filter layer disposed to face the first pixel and the second pixel. The color filter layer has a plurality of regions at a position facing at least the first pixel. The plurality of regions vary in optical transmittance. A second display unit according to the disclosure includes a first pixel and a second pixel each having a plurality of sub-pixels, and a color filter layer disposed to face the first pixel and the second pixel, and having a plurality of color regions having an arrangement of colors in units of the sub-pixels. At least one of the sub-pixels that correspond to a color arrangement configuration of the color regions that face the first pixel is different, in optical transmittance, from corresponding one of the sub-pixels that correspond to a color arrangement configuration of the color regions that face the second pixel.

Claims

1. A display unit, comprising:

a plurality of pixels, each pixel of the plurality of pixels comprising a first sub-pixel, a second sub-pixel, and a third sub-pixel, wherein

the first sub-pixel and the third sub-pixel have a first light emitting layer that is common to the first sub-pixel and the third sub-pixel,

each of the first sub-pixel and the third sub-pixel has a pixel electrode and a hole supply layer,

the first light emitting layer is adjacent to the hole supply layer of both of the first sub-pixel and the third sub-pixel,

the second sub-pixel has a second light emitting layer, and

the first light emitting layer extends over the second light emitting layer of the second sub-pixel; and

a color filter layer on the first sub-pixel and the second sub-pixel, wherein

the color filter layer comprises a plurality of regions,

a first region of the plurality of regions is on at least the first sub-pixel,

each of the plurality of regions has a different optical transmittance, and

a second region of the plurality of regions other than red, green, and blue regions of the plurality of regions comprises an opening.

2. The display unit according to claim 1, wherein

the first region has a first optical transmittance and the second region of the plurality of regions has a second optical transmittance, and

the first optical transmittance is higher than the second optical transmittance.

3. The display unit according to claim 2, wherein the first region comprises a transparent resin material layer having a light transmitting property.

4. The display unit according to claim 2, wherein the opening corresponds to cyan sub-pixel.

5. The display unit according to claim 2, wherein

the first region has a first film thickness and the second region has a second film thickness, and

the first film thickness is less than the second film thickness.

6. The display unit according to claim 1, wherein the first sub-pixel is a blue sub-pixel.

7. A display unit, comprising:

a first pixel that comprises a first plurality of sub-pixels;

a second pixel that comprises a second plurality of sub-pixels,

wherein each of the first pixel and the second pixel has a common light emitting layer; and

a color filter layer on the first pixel and the second pixel, wherein

the color filter layer comprises a first plurality of color regions,

in the first plurality of color regions, an arrangement of colors is with respect to each sub-pixel of each of the first plurality of sub-pixels and the second plurality of sub-pixels,

each color region of a second plurality of color regions of the first plurality of color regions faces a respective sub-pixel of the first plurality of sub-pixels,

each color region of a third plurality of color regions of the first plurality of color regions faces a respective sub-pixel of the second plurality of sub-pixels, and

each color region of the second plurality of color regions has an optical transmittance different from each color region of the third plurality of color regions.

8. The display unit according to claim 7, wherein each sub-pixel of each of the first plurality of sub-pixels and the second plurality of sub-pixels comprises one of a red light emitting layer, a yellow light emitting layer, or a blue light emitting layer.

9. The display unit according to claim 7, wherein each sub-pixel of each of the first plurality of sub-pixels and the second plurality of sub-pixels comprises one of a yellow light emitting layer or a blue light emitting layer.

10. The display unit according to claim 7, wherein each sub-pixel of each of the first plurality of sub-pixels and the second plurality of sub-pixels comprises one of a yellow light emitting layer or a cyan light emitting layer.

11. The display unit according to claim 8, wherein

each color region of the second plurality of color regions is one of red, green, or blue, and

each color region of the third plurality of color regions is one of red, colorless, or blue.

12. The display unit according to claim 9, wherein

each color region of the second plurality of color regions is one of transparent, green, or blue, and

each color region of the third plurality of color regions is one of red, colorless, or blue.

13. The display unit according to claim 10, wherein

each color region of the second plurality of color regions is one of colorless, green, or blue, and

each color region of the third plurality of color regions is one of red or colorless.

14. The display unit according to claim 8, wherein

a color region of the third plurality of color regions is colorless, and

the color region comprises a transparent resin layer having a light transmitting property.

15. The display unit according to claim 14, wherein the color region comprises an opening.

16. An electronic apparatus, comprising:

a display unit, wherein the display unit comprises;

a plurality of pixels, each pixel of the plurality of pixels comprising a first sub-pixel, a second sub-pixel, and a third sub-pixel, wherein

the first sub-pixel and the third sub-pixel have a first light emitting layer that is common to the first sub-pixel and the third sub-pixel,

each of the first sub-pixel and the third sub-pixel has a pixel electrode and a hole supply layer,

the first light emitting layer is adjacent to the hole supply layer of both of the first sub-pixel and the third sub-pixel,

the second sub-pixel has a second light emitting layer, and

the first light emitting layer extends over the second light emitting layer of the second sub-pixel; and

a color filter layer on the first sub-pixel and the second sub-pixel, wherein

the color filter layer comprises a plurality of regions,

a first region of the plurality of regions is on at least the first sub-pixel,

each of the plurality of regions has a different optical transmittance, and

a second region of the plurality of regions other than red, green, and blue regions of the plurality of regions comprises an opening.

17. An electronic apparatus, comprising:

a display unit, wherein the display unit comprises;

a first pixel having a first plurality of sub-pixels;

a second pixel having a second plurality of sub-pixels,

wherein each of the first pixel and the second pixel has a common light emitting layer; and

a color filter layer on the first pixel and the second pixel, wherein

the color filter layer comprises a first plurality of color regions,

in the first plurality of color regions, an arrangement of colors is based on each sub-pixel of each of the first plurality of sub-pixels and the second plurality of sub-pixels,

each color region of a second plurality of color regions of the first plurality of color regions faces a respective sub-pixel of the first plurality of sub-pixels,

each color region of a third plurality of color regions of the first plurality of color regions faces a respective sub-pixel of the second plurality of sub-pixels, and

each color region of the second plurality of color regions has an optical transmittance different from each of the third plurality of color regions.