Display substrate and method for manufacturing the same, and display apparatus

Patent metadata

Field	Value
Publication number	US-12300775-B2
Application number	US-202017760817-A
Country	US
Kind code	B2
Filing date	Dec 26, 2020
Priority date	Dec 26, 2020
Publication date	May 13, 2025
Grant date	May 13, 2025

Abstract

A display substrate includes a substrate, light-emitting devices disposed on a side of the substrate, a first light dimming layer disposed on the side of the substrate, and a first fixing layer disposed on a side of the light-emitting devices and the first light dimming layer away from the substrate. The light-emitting devices are arranged at intervals from each other and divided into a plurality of groups of light-emitting devices, and each group of light-emitting devices includes at least one light-emitting device. The first light dimming layer includes portions each located between two adjacent groups of light-emitting devices, and a gap exists between a portion of the first light dimming layer and at least one side face of at least one light-emitting device adjacent thereto. A portion of the first fixing layer is located in the gap. The first fixing layer is a light-transmitting film.

First claim

What is claimed is:

1. A display substrate, comprising:
a substrate;
a plurality of light-emitting devices disposed on a side of the substrate, the plurality of light-emitting devices being arranged at intervals from each other and divided into a plurality of groups of light-emitting devices, each group of light-emitting devices including at least one light-emitting device;
a first light dimming layer disposed on the side of the substrate, the first light dimming layer including portions each located between two adjacent groups of light-emitting devices, wherein a gap exists between a portion of the first light dimming layer and at least one side face of at least one light-emitting device(s) adjacent thereto; and
a first fixing layer disposed on a side of the plurality of light-emitting devices and the first light dimming layer away from the substrate, a portion of the first fixing layer being located in the gap, and the first fixing layer being a light-transmitting film.

2. The display substrate according to claim 1 , wherein the first light dimming layer includes a plurality of light dimming sub-layers that are stacked;
the plurality of light dimming sub-layers include a first light dimming sub-layer and a second light dimming sub-layer that are stacked in a direction parallel to a thickness direction of the substrate and moving away from the substrate;
an orthographic projection of the first light dimming sub-layer on the substrate coincides with or is located within an orthographic projection of the second light dimming sub-layer on the substrate.

3. The display substrate according to claim 1 , wherein a gap exists between the portion of the first light dimming layer and each side face of the at least one light-emitting device adjacent thereto; or
each group of light-emitting devices includes one light-emitting device.

4. The display substrate according to claim 1 , wherein an outer boundary of an orthographic projection of the first light dimming layer on the substrate approximately coincides with an edge of the substrate; and
an angle between a surface of the first light dimming layer away from the substrate and a side face of the first light dimming layer corresponding to the edge of the substrate is approximately a right angle.

5. The display substrate according to claim 1 , wherein in a thickness direction of the substrate, a portion of the first light dimming layer located between two adjacent light-emitting devices has a plurality of cross sections perpendicular to the thickness direction of the substrate;
an orthographic projection of a cross section, other than a cross section closest to the substrate and a cross section farthest away from the substrate, on the substrate is located within an orthographic projection of the cross section closest to the substrate on the substrate.

6. The display substrate according to claim 5 , wherein a shape of a section, taken along a plane parallel to the thickness direction of the substrate and a connection line of centers of the two adjacent light-emitting devices, of the portion of the first light dimming layer located between the two adjacent light-emitting devices includes a trapezoid or an approximate trapezoid.

7. The display substrate according to claim 6 , wherein in a direction parallel to the thickness direction of the substrate to and moving away from the substrate, areas of orthographic projections of the plurality of cross sections on the substrate decrease in order; and a length of a bottom base of the trapezoid or the approximate trapezoid proximate to the substrate is greater than a length of a top base of the trapezoid or the approximate trapezoid away from the substrate; or
the shape of the section, taken along the plane parallel to the thickness direction of the substrate and the connection line of the centers of the two adjacent light-emitting devices, of the portion of the first light dimming layer located between the two adjacent light-emitting devices includes the approximate trapezoid, a top base of the approximate trapezoid away from the substrate smoothly transitions to a side edge of the approximate trapezoid located between the top base and a bottom base of the approximate trapezoid that is proximate to the substrate.

8. The display substrate according to claim 1 , further comprising a second fixing layer, wherein the second fixing layer is a light-transmitting layer;
the second fixing layer includes a plurality of fixing patterns that are arranged at intervals from each other;
a fixing pattern surrounds a group of light-emitting devices to fix the group of light-emitting devices;
a portion of the first light dimming layer is located in a gap between any two adjacent fixing patterns of the plurality of fixing patterns, and is in contact with the two adjacent fixing patterns; and
the first fixing layer is located on a side of the second fixing layer and the first light dimming layer away from the substrate.

9. The display substrate according to claim 8 , wherein a shape of a section, taken along a plane parallel to a thickness direction of the substrate and a connection line of centers of two adjacent light-emitting devices, of the portion of the first light dimming layer located between the two adjacent groups of light-emitting devices includes a trapezoid or an approximate trapezoid; a length of a bottom base of the trapezoid or approximate trapezoid proximate to the substrate is less than a length of a top base of the trapezoid or approximate trapezoid away from the substrate; or
the group of light-emitting devices surrounded by the fixing pattern includes at least two light-emitting devices, a light-emitting device of the at least two light-emitting devices is configured to emit light of a single color, and light emitted by all of the at least two light-emitting devices is of at least one color.

10. The display substrate according to claim 1 , further comprising a plurality of light-transmitting particles disposed on a side of the first fixing layer away from the substrate, the plurality of light-transmitting particles being configured to change a propagation direction of at least a portion of light entering the plurality of light-transmitting particles.

11. The display substrate according to claim 10 , wherein the plurality of light-transmitting particles are arranged in an array, a distance between any two adjacent light-transmitting particles is in a range of 95 μm to 105 μm, inclusive;
a thickness of each light-transmitting particle is in a range of 6 μm to 12 μm, inclusive;
a dimension of an orthographic projection of each light-transmitting particle on the substrate is in a range of 45 μm to 55 μm, inclusive;
and/or,
a shape of surfaces of the plurality of light-transmitting particles includes at least one of a pyramid, a wedge, an arc surface and a spherical surface.

12. The display substrate according to claim 1 , further comprising a plurality of functional devices, wherein at least one functional device is disposed on a same side of the substrate as the plurality of light-emitting devices;
the at least one functional device is configured to provide control signals for the plurality of light-emitting devices.

13. The display substrate according to claim 12 , wherein relative to the substrate, a surface of the first fixing layer away from the substrate is higher than a surface of the at least one functional device away from the substrate.

14. The display substrate according to claim 12 , wherein the plurality of functional devices include a plurality of driving chips;
the plurality of driving chips are located on a same side of th

Assignees

• Boe Mled Technology Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Li Jinpeng
• Sun Haiwei
• Li Pei
• Zhang Teng
• Li Jian
• Cao Pengjun
• Wang Zhiqiang
• Shu Zongying

Classifications

• H10W90/00 Primary

  Package configurations · CPC title

• H10H20/0363

  of optical field-shaping means · CPC title

• H10H20/856

  Reflecting means · CPC title

• H10H20/855

  Optical field-shaping means, e.g. lenses · CPC title

• H01L2933/0058

  Electricity · mapped topic