Display panel and manufacturing method therefor, and display device having improved utilization of light

Patent metadata

Field	Value
Publication number	US-12471473-B2
Application number	US-202117915228-A
Country	US
Kind code	B2
Filing date	Nov 11, 2021
Priority date	Mar 19, 2021
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

A display panel includes a plurality of first pixel units, each of the first pixel units including a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel of different colors, and the four sub-pixels including a white sub-pixel. In each of the first pixel units, the four sub-pixels are arranged in two rows and two columns, the first sub-pixel and the fourth sub-pixel are diagonally located and centrally symmetric, the second sub-pixel and the third sub-pixel are diagonally located and centrally symmetric, the first pixel unit composed of the four sub-pixels is formed in a hexagon as a whole, and the first pixel unit has at least two obtuse angles or two arc edges protruding toward a direction away from a center of the first pixel unit.

First claim

What is claimed is:

1 . A display panel, comprising a plurality of first pixel units, wherein each of the first pixel units comprises a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel of different colors, and the four sub-pixels comprise a white sub-pixel;
in each of the first pixel units, the four sub-pixels are arranged in two rows and two columns, the first sub-pixel and the fourth sub-pixel are diagonally located and centrally symmetric, the second sub-pixel and the third sub-pixel are diagonally located and centrally symmetric, the first pixel unit composed of the four sub-pixels is formed in a hexagon as a whole, and the first pixel unit has at least two obtuse angles or two arc edges protruding toward a direction away from a center of the first pixel unit; wherein the first sub-pixel is a red sub-pixel, the second sub-pixel is a green sub-pixel, the third sub-pixel is a blue sub-pixel, and the fourth sub-pixel is a white sub-pixel; wherein the display panel further comprises: a microlens layer comprising a plurality of lenses, wherein each of the lenses is provided corresponding to one of the first pixel units, and is used for converging outgoing light of the sub-pixels; and each of the lenses is provided corresponding to the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel.

2 . The display panel according to claim 1 , wherein all sub-pixels in the plurality of first pixel units are arranged in an array along a row direction and a column direction; wherein,
in (2m−1)-th row of sub-pixels, the first sub-pixels and the second sub-pixels are alternately arranged; in 2m-th row of sub-pixels, the third sub-pixels and the fourth sub-pixels are alternately arranged; in the (2m−1)-th row and 2m-th row of sub-pixels, the third sub-pixels and the first sub-pixels are located in a same column, and the fourth sub-pixels and the second sub-pixels are located in a same column, where m is a positive integer greater than or equal to 1; and one of the first pixel units is composed of one of the first sub-pixels and one of the second sub-pixels located in the (2m−1)-th row and one of the third sub-pixels and one of the fourth sub-pixels located in the 2m-th row.

3 . The display panel according to claim 2 , wherein the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel are all right-angled trapezoids having a same shape and a same size, and the right-angled trapezoid has two right angles, one acute angle and one obtuse angle;
in the first pixel unit, one right angle of each sub-pixel is located in a center of the hexagon and is in contact with each other, the acute angles of two sub-pixels are in contact to form one angle of the hexagon, the acute angles of other two sub-pixels are in contact to form another angle of the hexagon, and the obtuse angles of the four sub-pixels form remaining four angles of the hexagon respectively.

4 . The display panel according to claim 3 , wherein a first sub-pixel in the (2m−1)-th row and a third sub-pixel in (2m+1)-th row are located in a same column, a second sub-pixel in the (2m−1)-th row and a fourth sub-pixel in the (2m+1)-th row are located in a same column; a third sub-pixel and a fourth sub-pixel in the 2m-th row and a first sub-pixel and a second sub-pixel in the (2m+1)-th row form a second pixel unit, and a shape of the second pixel unit is a rectangle;
in the second pixel unit, the acute angles of two sub-pixels and the obtuse angles of other two sub-pixels are located in a center of the rectangle and are in contact with each other, and the right angles of four sub-pixels are located at outer periphery and separated from each other, forming four angles of the rectangular respectively.

5 . The display panel according to claim 4 , wherein, in the first pixel unit, an acute angle of the first sub-pixel and an acute angle of the second sub-pixel are in contact to form one angle of the hexagon, an acute angle of the third sub-pixel and an acute angle of the fourth sub-pixel are in contact to form another angle of the hexagon, and the obtuse angles of the four sub-pixels form remaining four angles of the hexagon respectively.

6 . The display panel according to claim 5 , wherein the acute angle of the right-angled trapezoid is 60°, and the obtuse angle is 120°.

7 . The display panel according to claim 6 , wherein the hexagon is a regular hexagon, and the rectangle is a square.

8 . The display panel according to claim 1 , wherein the display panel further comprises:
a driving backplane; a light-emitting layer provided on one side of the driving backplane, comprising a white light-emitting layer corresponding to each sub-pixel; a filter layer provided on one side of the light-emitting layer away from the driving backplane, comprising a first filter layer corresponding to the first sub-pixel, a second filter layer corresponding to the second sub-pixel, a third filter layer corresponding to the third sub-pixel, so that the first sub-pixel displays a first color, the second sub-pixel displays a second color, the third sub-pixel displays a third color, and the fourth sub-pixel displays white; and a first planarization layer, provided on one side of the filter layer away from the driving backplane; wherein the microlens layer is located between the filter layer and the first planarization layer; the lens is a convex lens, and a refractive index of the convex lens is greater than a refractive index of the first planarization layer; or the lens is a concave lens, and a refractive index of the concave lens is smaller than a refractive index of the first planarization layer.

9 . The display panel according to claim 8 , wherein the display panel further comprises:
a second planarization layer, provided between the microlens layer and the filter layer; wherein a refractive index of the lens is greater than a refractive index of the second planarization layer.

10 . The display panel according to claim 9 , wherein the display panel further comprises:
a support layer, provided between the second planarization layer and the light-emitting layer of the fourth sub-pixel, wherein the support layer is a transparent film layer.

11 . The display panel according to claim 10 , wherein a thickness of the support layer is equal to a thickness of the filter layer.

12 . The display panel according to claim 10 , wherein a material of the support layer is same as a material of the lens.

13 . The display panel according to claim 10 , wherein a projection of the lens on the driving backplane is located within a projection of the first pixel unit corresponding to the lens, and is circular.

14 . A method for manufacturing a display panel, comprising forming a plurality of first pixel units, wherein each of the first pixel units comprises a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel of different colors, and the four sub-pixels comprise a white sub-pixel;
wherein, when forming the first pixel units, the four sub-pixels in each of the first pixel units are arranged in two rows and two columns, the first sub-pixel and the fourth sub-pixel are diagonally located and centrally symmetric, the second sub-pixel and the third sub-pixel are diagonally located and centrally symmetric, the first pixel unit composed of the four sub-pixels is formed in a hexagon as a whole, and the first pixel unit has at least two obtuse angles or two arc edges protruding toward a direction away from a center of the first pixel unit; wherein the first sub-pixel is a red sub-pixel, the second sub-pixel is

Assignees

• Yunnan Invensight Optoelectronics Technology Co Ltd
• Boe Technology Group Co Ltd
• Beijing Boe Technology Dev Co Ltd

Inventors

• Zhu Zhijian
• Lu Pengcheng
• Chen Chenyu
• Li Yunlong
• Li Dongsheng
• Liu Wei
• Fan Longfei
• Wu Qian
• Chen Rongfei
• Tian Yuanlan
• Zhang Dacheng

Classifications

• H10K59/38

  comprising colour filters or colour changing media [CCM] · CPC title

• H10K71/00

  Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title

• H10K59/879

  comprising refractive means, e.g. lenses · CPC title

• H10K59/353

  characterised by the geometrical arrangement of the RGB subpixels · CPC title

• H10K59/1201

  Manufacture or treatment · CPC title