CN-121986576-A - Display module and transparent display device

CN121986576ACN 121986576 ACN121986576 ACN 121986576ACN-121986576-A

Abstract

The display module comprises a plurality of display substrates which are arranged in an array and are mutually independent, wherein each display substrate comprises a transparent base and a plurality of light emitting devices arranged on the transparent base, a gap exists between every two adjacent display substrates, the display module further comprises a transparent support substrate, the plurality of display substrates are all located on the same side of the transparent support substrate, the transparent support substrates are continuously distributed across the gap, orthographic projection of the plurality of light emitting devices of each display substrate on an extending surface of the transparent support substrate is located in the support substrate, and the display module further comprises a first filling layer which is located at least in the gap.

Inventors

LIU NAIWEI
TIAN CHAO
LIN YICHENG
JIN MEILING
SUN YUANHAO
ZHANG QINGKAI
LI LINFENG

Assignees

京东方科技集团股份有限公司
京东方晶芯科技有限公司
北京京东方技术开发有限公司

Dates

Publication Date: 20260505
Application Date: 20240830

Claims (20)

The display module comprises a plurality of display substrates which are arranged in an array and mutually independent, wherein each display substrate comprises a transparent base and a plurality of light emitting devices arranged on the transparent base, and a gap exists between two adjacent display substrates; The transparent support substrates are continuously distributed across the gap, and orthographic projections of the plurality of light emitting devices of each display substrate on the extending surface of the transparent support substrate are all positioned in the support substrate; The display module further comprises a first filling layer, and the first filling layer is at least located in the gap.
The display module of claim 1, wherein the gap has a width in the range of 50-300 microns.
The display module of claim 1, wherein the refractive index n1 of the first filling layer and the refractive index n2 of the transparent substrate satisfy 0.99≤n1/n2≤1.06.
The display module of claim 1, wherein the transparent substrate is made of glass, and the display module further comprises a first filling layer positioned in the gap, wherein the refractive index n1 of the first filling layer is 1.5-1.6.
The display module of claim 1, wherein the transparent substrate includes a first face carrying the light emitting device, a second face facing away from the first face, and a side face between the first face and the second face; Wherein, for two adjacent opposite sides of the display substrate, the first filling layer is continuously distributed along the sides from the first surface to the second surface.
The display module of claim 5, wherein the transparent support substrate is located on a side of the second face remote from the first face; The maximum distance from the first filling layer to the transparent support substrate in the thickness direction of the transparent base is smaller than or equal to the distance from the side surface of the light emitting device away from the second face to the transparent support substrate.
The display module of claim 5, wherein a surface of the first filling layer near the first face side in the thickness direction of the transparent substrate is flush with the first face.
The display module of claim 5, wherein the refractive index n1 of the first filling layer and the refractive index n2 of the transparent substrate satisfy 0.73 n1/n2<0.99; the surface of the first filling layer, which is close to the first surface side in the thickness direction of the transparent substrate, is a convex surface.
The display module of claim 8, wherein the side is a hydrophobic surface and/or the first surface comprises a hydrophobic region proximate the gap.
The display module of claim 8, wherein the first filling layer includes a convex portion, which is a portion of the first filling layer that is higher than the first face with respect to the second face in a thickness direction of the transparent substrate, a surface of the convex portion on a side close to the first face in the thickness direction of the transparent substrate being the convex surface; The orthographic projection of the protruding part on the transparent supporting substrate is overlapped with orthographic projections of the first surfaces of the adjacent two display substrates corresponding to the first filling layer on the transparent supporting substrate.
The display module of claim 5, wherein the refractive index n1 of the first filling layer and the refractive index n2 of the transparent substrate satisfy 0.73 n1/n2<0.99; the first filling layer comprises a transparent matrix, the display module further comprises diffusion particles distributed in the transparent matrix, and the transparent matrix and the diffusion particles form the first filling layer.
The display module of claim 5, wherein the transparent support substrate is located on a side of the second face remote from the first face; The plurality of display substrates comprise a first display substrate and a second display substrate which are adjacent, and the distance from the first surface of the first display substrate to the transparent support substrate is larger than the distance from the first surface of the second display substrate to the transparent support substrate at the edge close to the gap; The surface, facing away from the transparent support substrate, of the first filling layer between the first display substrate and the second display substrate comprises a first edge and a second edge which are opposite, the first edge is connected with the first surface of the first display substrate, the second edge is connected with the first surface of the second display substrate, and the distance from the surface, facing away from the transparent support substrate, of the first filling layer to the transparent support substrate is gradually reduced along the direction from the first edge to the second edge.
The display module of claim 12, wherein a distance from the first edge to the transparent support substrate in a thickness direction of the transparent base is equal to a distance from the first face of the first display substrate to the transparent support substrate, and a distance from the second edge to the transparent support substrate is equal to a distance from the first face of the second display substrate to the transparent support substrate.
The display module of claim 1, wherein the transparent substrate includes a first face carrying the light emitting device, a second face facing away from the first face, and a side face between the first face and the second face; The opposite side surfaces of two adjacent display substrates are inclined planes with the same inclination direction, and the inclined planes are intersected with the thickness direction of the transparent substrate.
The display module of claim 14, wherein the opposing inclined surfaces of two adjacent display substrates are parallel to each other, and a vertical distance between the two opposing inclined surfaces is in a range of 50 micrometers-300 micrometers.
The display module of claim 14, wherein in the same display substrate, an orthographic projection of the light emitting device on the transparent support substrate does not overlap an orthographic projection of the inclined plane on the transparent support substrate.
The display module of claim 14, wherein the width W of the orthographic projection of the inclined plane on the transparent support substrate satisfies that W is less than or equal to P1-L; Wherein P1 is the interval between two adjacent light emitting devices arranged along a first direction in the display substrate, the first direction is the direction extending along the direction of the display substrate and perpendicular to the extending direction of the gap, and L is the width of the gap between the two display substrates arranged along the first direction in the first direction.
The display module according to any one of claims 1 to 17, wherein two of the light emitting devices located on opposite sides of the gap in the width direction thereof and adjacent to the gap are a first light emitting device and a second light emitting device, respectively, a pitch P2 between the first light emitting device and the second light emitting device satisfies 0.9≤P3≤P2≤1.1≤P3, Wherein P3 is a distance between two adjacent light emitting devices in the display substrate, the light emitting colors of the two adjacent light emitting devices are the same as the first light emitting device and the second light emitting device, and the two adjacent light emitting devices are arranged along the width direction of the gap.
The display module of any one of claims 1 to 17, wherein the orthographic projection of the first filler layer on the transparent support substrate does not overlap with the orthographic projection of any one of the light emitting devices on the transparent support substrate.
The display module of any one of claims 1 to 17, further comprising a second filler layer located on a side of the light emitting devices remote from the transparent substrate and continuously distributed, wherein orthographic projections of a plurality of light emitting devices in the display module on the transparent substrate are all located within orthographic projection ranges of the second filler layer on the transparent substrate; The second filling layer comprises a first part and a second part, the first part is positioned on one side of the light-emitting device away from the transparent substrate, and the second part is positioned between two adjacent light-emitting devices; the first filling layer is arranged in contact with the second filling layer.

Description

Display module and transparent display device Technical Field The disclosure relates to the technical field of display, in particular to a display module and a transparent display device. Background The micro inorganic light emitting Diode comprises MiniLED and MicroLED, and the Mini LED is a light emitting Diode (LIGHT EMITTING Diode) chip with a grain size of about 100-300 microns. MicroLED refers to a light emitting diode chip with a grain size below 100 micrometers. MiniLED/MicroLED has the advantages of energy conservation, simple mechanism, small volume, thinness and the like, so that the transparent display product has wide application and can improve the transmittance of the display product. Disclosure of Invention The disclosure provides a display module and a transparent display device. The disclosure provides a display module, which comprises a plurality of display substrates which are arranged in an array and mutually independent, wherein each display substrate comprises a transparent base and a plurality of light emitting devices arranged on the transparent base, and a gap exists between two adjacent display substrates; The transparent support substrates are continuously distributed across the gap, and orthographic projections of the plurality of light emitting devices of each display substrate on the extending surface of the transparent support substrate are all positioned in the support substrate; The display module further comprises a first filling layer, and the first filling layer is at least located in the gap. In some embodiments, the gap has a width in the range of 50 microns to 300 microns. In some embodiments, the refractive index n1 of the first filling layer and the refractive index n2 of the transparent substrate satisfy 0.99≤n1/n2≤1.06. In some embodiments, the transparent substrate is made of glass, and the display module further includes a first filling layer located in the gap, where a refractive index n1 of the first filling layer is between 1.5 and 1.6. In some embodiments, the transparent substrate includes a first face carrying the light emitting device, a second face facing away from the first face, and a side face between the first face and the second face; Wherein, for two adjacent opposite sides of the display substrate, the first filling layer is continuously distributed along the sides from the first surface to the second surface. In some embodiments, the transparent support substrate is located on a side of the second face remote from the first face; The maximum distance from the first filling layer to the transparent support substrate in the thickness direction of the transparent base is smaller than or equal to the distance from the side surface of the light emitting device away from the second face to the transparent support substrate. In some embodiments, a surface of the first filling layer near the first face side in the thickness direction of the transparent substrate is flush with the first face. In some embodiments, the refractive index n1 of the first filling layer and the refractive index n2 of the transparent substrate satisfy that 0.73≤n1/n 2<0.99; the surface of the first filling layer, which is close to the first surface side in the thickness direction of the transparent substrate, is a convex surface. In some embodiments, the side is a hydrophobic surface and/or the first surface includes a hydrophobic region proximate to the gap. In some embodiments, the first filling layer includes a protrusion, which is a portion of the first filling layer that is higher than the first face relative to the second face in a thickness direction of the transparent substrate, and a surface of the protrusion on a side close to the first face in the thickness direction of the transparent substrate is the convex surface; The orthographic projection of the protruding part on the transparent supporting substrate is overlapped with orthographic projections of the first surfaces of the adjacent two display substrates corresponding to the first filling layer on the transparent supporting substrate. In some embodiments, the refractive index n1 of the first filling layer and the refractive index n2 of the transparent substrate satisfy that 0.73≤n1/n 2<0.99; the first filling layer comprises a transparent matrix, the display module further comprises diffusion particles distributed in the transparent matrix, and the transparent matrix and the diffusion particles form the first filling layer. In some embodiments, the transparent support substrate is located on a side of the second face remote from the first face; The plurality of display substrates comprise a first display substrate and a second display substrate which are adjacent, and the distance from the first surface of the first display substrate to the transparent support substrate is larger than the distance from the first surface of the second display substrate to the transparent support substrate at the edge close to the