US-12628703-B2 - Display apparatus and manufacturing method thereof

US12628703B2US 12628703 B2US12628703 B2US 12628703B2US-12628703-B2

Abstract

A display apparatus includes a color filter substrate, a first encapsulation layer, a first bank layer, color conversion patterns, a second encapsulation layer, a second bank layer, a driving circuit substrate, and light-emitting devices. The first encapsulation layer is disposed on the color filter substrate. The first bank layer is disposed on the first encapsulation layer. The color conversion patterns are disposed in first openings of the first bank layer. The second encapsulation layer is disposed on the first bank layer and the color conversion patterns. The second bank layer is disposed on the second encapsulation layer. The driving circuit substrate is disposed opposite to the color filter substrate. The light-emitting devices are disposed on and electrically connected to the driving circuit substrate. The driving circuit substrate and the second bank layer are spaced from each other by a distance in a direction perpendicular to the driving circuit substrate.

Inventors

Wan-Ting Hsu
Chun-Liang Lin

Assignees

AUO Corporation

Dates

Publication Date: 20260512
Application Date: 20231219
Priority Date: 20230609

Claims (16)

1 . A manufacturing method of a display apparatus, comprising: providing a color filter substrate; forming a first encapsulation layer on the color filter substrate; forming a first bank layer on the first encapsulation layer, wherein the first bank layer has a plurality of first openings; forming a plurality of color conversion patterns in the first openings of the first bank layer, respectively; forming a second encapsulation layer on the first bank layer and the color conversion patterns; forming a second bank layer on the second encapsulation layer, wherein the second bank layer has a plurality of second openings, the first openings of the first bank layer and the second openings of the second bank layer are respectively overlapped, and the color filter substrate, the first encapsulation layer, the first bank layer, the color conversion patterns, the second encapsulation layer, and the second bank layer form a color conversion substrate; forming a plurality of light-emitting devices on a driving circuit substrate, and electrically connecting the light-emitting devices to the driving circuit substrate, wherein the driving circuit substrate and the light-emitting devices form a light-emitting device array substrate; and assembling the color conversion substrate and the light-emitting device array substrate to secure the color conversion substrate and the light-emitting device array substrate to each other, wherein the light-emitting devices and the second openings of the second bank layer of the color conversion substrate are respectively overlapped, and the driving circuit substrate and the second bank layer are spaced from each other by distance in a direction perpendicular to the driving circuit substrate.
2 . The manufacturing method of the display apparatus as claimed in claim 1 , wherein the second bank layer has a first surface facing the driving circuit substrate, and the first surface of the second bank layer and the driving circuit substrate are spaced from each other by the distance in the direction perpendicular to the driving circuit substrate.
3 . The manufacturing method of the display apparatus as claimed in claim 1 , wherein an adhesion layer is disposed between the color conversion substrate and the light-emitting device array substrate, the second bank layer has a first surface facing the driving circuit substrate, and a portion of the adhesion layer is disposed between the first surface of the second bank layer and the driving circuit substrate.
4 . The manufacturing method of the display apparatus as claimed in claim 3 , wherein the portion of the adhesion layer directly contacts the first surface of the second bank layer facing the driving circuit substrate.
5 . The manufacturing method of the display apparatus as claimed in claim 3 , wherein the second bank layer further has a second surface opposite to the first surface, and the second surface of the second bank layer directly contacts the second encapsulation layer.
6 . The manufacturing method of the display apparatus as claimed in claim 1 , wherein the first bank layer and the second bank layer respectively have a first height and a second height in the direction perpendicular to the driving circuit substrate, and the second height is less than or equal to the first height.
7 . The manufacturing method of the display apparatus as claimed in claim 1 , wherein the first bank layer and the second bank layer respectively have a first width and a second width in a direction parallel to the driving circuit substrate, and the second width is less than or equal to the first width.
8 . The manufacturing method of the display apparatus as claimed in claim 1 , wherein the distance is less than 2 μm.
9 . A display apparatus, comprising: a color filter substrate; a first encapsulation layer, disposed on the color filter substrate; a first bank layer, disposed on the first encapsulation layer and having a plurality of first openings; a plurality of color conversion patterns, respectively disposed in the first openings of the first bank layer; a second encapsulation layer, disposed on the first bank layer and the color conversion patterns; a second bank layer, disposed on the second encapsulation layer and having a plurality of second openings, wherein the first openings of the first bank layer and the second openings of the second bank layer are respectively overlapped; a driving circuit substrate, disposed opposite to the color filter substrate; and a plurality of light-emitting devices, disposed directly on the driving circuit substrate, electrically connected to the driving circuit substrate, and respectively overlapped with the second openings of the second bank layer, the plurality of light-emitting devices are disposed in between the driving circuit substrate and the second bank layer, wherein the driving circuit substrate and the second bank layer are spaced from each other by a distance in a direction perpendicular to the driving circuit substrate.
10 . The display apparatus as claimed in claim 9 , wherein the second bank layer has a first surface facing the driving circuit substrate, and the first surface of the second bank layer and the driving circuit substrate are spaced from each other by the distance in the direction perpendicular to the driving circuit substrate.
11 . The display apparatus as claimed in claim 9 , further comprising: an adhesion layer, wherein the second bank layer has a first surface facing the driving circuit substrate, and a portion of the adhesion layer is disposed between the first surface of the second bank layer and the driving circuit substrate.
12 . The display apparatus as claimed in claim 11 , wherein the portion of the adhesion layer directly contacts the first surface of the second bank layer facing the driving circuit substrate.
13 . The display apparatus as claimed in claim 11 , wherein the second bank layer further has a second surface opposite to the first surface, and the second surface of the second bank layer directly contacts the second encapsulation layer.
14 . The display apparatus as claimed in claim 9 , wherein the first bank layer and the second bank layer respectively have a first height and a second height in the direction perpendicular to the driving circuit substrate, and the second height is less than or equal to the first height.
15 . The display apparatus as claimed in claim 9 , wherein the first bank layer and the second bank layer respectively have a first width and a second width in a direction parallel to the driving circuit substrate, and the second width is less than or equal to the first width.
16 . The display apparatus as claimed in claim 9 , wherein the distance is less than 2 μm.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims the priority benefit of Taiwan application serial no. 112121733, filed on Jun. 9, 2023. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification. BACKGROUND Technical Field The disclosure relates to a photoelectric device and a manufacturing method thereof, and particularly to a display apparatus and a manufacturing method thereof. Description of Related Art Flat panel display apparatuses are favored for their lightweight, compact size, and reduced volume and therefore have been widely used in daily lives. The flat panel display apparatus includes a driving circuit substrate, a plurality of light-emitting devices electrically connected to the driving circuit substrate, and a color filter substrate positioned opposite to the driving circuit substrate. The color filter substrate includes a light-blocking pattern layer and a plurality of color filter patterns. The light-blocking pattern layer has a plurality of sub-pixel openings overlapped with the light-emitting devices, and the color filter patterns are disposed in the sub-pixel openings. The flat panel display apparatus may further include a plurality of color conversion patterns overlapped with the light-emitting devices, thus enhancing color saturation. To mitigate issues of mixed light, the flat panel display apparatus is further equipped with a first bank layer separating the color conversion patterns and a second bank layer separating the light-emitting devices. However, due to an excessive distance between the first bank layer and the second bank layer in a direction perpendicular to the driving circuit substrate, light beams emitted by the light-emitting devices in different sub-pixel regions enter adjacent sub-pixels, which leads to dull defects in the adjacent sub-pixels adverse impact on an optical performance of the flat panel display apparatus. SUMMARY The disclosure provides a display apparatus with a favorable optical performance. An embodiment of the disclosure provides a manufacturing method of a display apparatus, and the manufacturing method includes following steps. A color filter substrate is provided. A first encapsulation layer is formed on the color filter substrate. A first bank layer is formed on the first encapsulation layer, where the first bank layer has a plurality of first openings. A plurality of color conversion patterns are formed in the first openings of the first bank layer, respectively. A second encapsulation layer is formed on the first bank layer and the color conversion patterns. A second bank layer is formed on the second encapsulation layer, where the second bank layer has a plurality of second openings, the first openings of the first bank layer and the second openings of the second bank layer are respectively overlapped, and the color filter substrate, the first encapsulation layer, the first bank layer, the color conversion patterns, the second encapsulation layer, and the second bank layer form a color conversion substrate. A plurality of light-emitting devices are formed on a driving circuit substrate, and the light-emitting devices are electrically connected to the driving circuit substrate, where the driving circuit substrate and the light-emitting devices form a light-emitting device array substrate. The color conversion substrate and the light-emitting device array substrate are assembled to secure the color conversion substrate and the light-emitting device array substrate to each other, where the light-emitting devices and the second openings of the second bank layer of the color conversion substrate are respectively overlapped, and the driving circuit substrate and the second bank layer are spaced from each other by distance in a direction perpendicular to the driving circuit substrate. An embodiment of the disclosure provides a display apparatus which includes a color filter substrate, a first encapsulation layer, a first bank layer, a plurality of color conversion patterns, a second encapsulation layer, a second bank layer, a driving circuit substrate, and a plurality of light-emitting devices. The first encapsulation layer is disposed on the color filter substrate. The first bank layer is disposed on the first encapsulation layer and has a plurality of first openings. The color conversion patterns are respectively disposed in the first openings of the first bank layer. The second encapsulation layer is disposed on the first bank layer and the color conversion patterns. The second bank layer is disposed on the second encapsulation layer and has a plurality of second openings, where the first openings of the first bank layer and the second openings of the second bank layer are respectively overlapped. The driving circuit substrate is disposed opposite to the color filter substrate. The light-emitting devices are disposed on the driving circuit substrate, electric