CN-116612694-B - Display module and display device thereof

CN116612694BCN 116612694 BCN116612694 BCN 116612694BCN-116612694-B

Abstract

The embodiment of the disclosure provides a display module and a display device thereof. The display module comprises a display substrate, a printed circuit board positioned on the backlight side of the display substrate, a touch substrate positioned on the light emitting side of the display substrate and a first flexible circuit board, wherein the display substrate comprises a display part positioned in a display area and a first frame positioned in a frame area, the touch substrate comprises a touch part positioned in the display area and a second frame positioned in the frame area, the second frame comprises a first sub-frame corresponding to the first frame and a second sub-frame positioned on one side of the first sub-frame far away from the touch part, the first flexible circuit board comprises a first connecting part, a second connecting part and a middle connecting part, the first connecting part is coupled with the printed circuit board, the second connecting part is in lap joint contact with one side of the second sub-frame facing the display substrate, and two ends, close to each other, of the first connecting part and the second connecting part are connected through the middle connecting part. The width of display module assembly can be reduced to this disclosed technical scheme, realizes the effect of narrow frame.

Inventors

HUANG XIAOXIA
CHEN WEI
Du Ajuan
YAO MENGLIANG
SUN HAO
YANG ENJIAN
Zeng Yilun
WANG YONGLE
WU YIQIAN
ZENG GUODONG
HUANG YUNHUI
YANG HUFEI

Assignees

京东方科技集团股份有限公司
重庆京东方显示技术有限公司

Dates

Publication Date: 20260512
Application Date: 20230627

Claims (10)

1. A display module having a display area and a border area on one side of the display area, comprising: The display substrate comprises a display part positioned in the display area and a first frame positioned in the frame area; A printed circuit board located at a backlight side of the display substrate; The touch control substrate is positioned on the light emitting side of the display substrate, the touch control substrate comprises a touch control part positioned in the display area and a second frame positioned in the frame area, the second frame comprises a first sub-frame and a second sub-frame, the first sub-frame corresponds to the first frame, and the second sub-frame is positioned on one side of the first sub-frame far away from the touch control part; The first flexible circuit board comprises a first connecting part, a second connecting part and an intermediate connecting part, wherein the first connecting part is coupled with the printed circuit board, the second connecting part is in lap joint contact with one side, facing the display substrate, of the second sub-frame, two ends, close to each other, of the first connecting part and the second connecting part are connected through the intermediate connecting part, and the orthographic projection of the intermediate connecting part on the plane where the display substrate is located outside the orthographic projection of the plane where the second sub-frame is located.
2. The display module assembly of claim 1, wherein the intermediate connection portion is inclined from the second connection portion toward a direction away from the touch substrate, the display module assembly further comprises a second adhesive layer, the second adhesive layer is located on a side of the second connection portion away from the touch substrate, and a boundary of the second adhesive layer on a side close to the display area is defined by the intermediate connection portion.
3. The display module assembly of claim 2, wherein the second adhesive layer includes a waterproof adhesive layer and a single-sided adhesive layer, the single-sided adhesive layer is located on a side of the second connection portion facing away from the touch substrate, and the waterproof adhesive layer is located on a side of the single-sided adhesive layer facing away from the touch substrate.
4. The display module assembly of claim 1, wherein the second bezel includes a first sub-portion and a second sub-portion, the first sub-portion corresponding to the second connection portion, the second sub-portion being located on a side of the first sub-portion away from the touch portion.
5. The display module according to claim 1, wherein the second connection portion includes a second body portion, a first pad portion and a first body portion which are sequentially far away from the display area, the intermediate connection portion is connected with the second body portion, a second pad portion is disposed on a side of the second sub-frame facing the display substrate, the first pad portion is in binding connection with the second pad portion, and a width of the second body portion is 0.5mm-1.75mm.
6. The display module of claim 5, wherein the width of the first body portion is 0.3mm to 0.6mm.
7. The display module of claim 1, wherein the second bezel has a width of 4.15mm to 5.4mm.
8. The display module of claim 1, wherein the display substrate is a flexible display substrate, the display substrate further comprises a bending portion and a binding portion, the bending portion is bent to enable the binding portion to be located on a backlight side of the display substrate, and the binding portion is coupled with the printed circuit board through a second flexible circuit board.
9. The display module of claim 8, further comprising a heat dissipation film layer, wherein the heat dissipation film layer is located on a backlight side of the display substrate, a supporting structure is sandwiched between the binding portion and the heat dissipation film layer, the printed circuit board is located on one side of the heat dissipation film layer, and the display module further comprises a driving chip, wherein the driving chip is located on the binding portion.
10. A display device comprising a display module according to any one of claims 1 to 9.

Description

Display module and display device thereof Technical Field The disclosure relates to the technical field of display devices, and in particular relates to a display module and a display device thereof. Background With the development of display technology, a display module with integrated touch function has been widely used in various display products. At present, the display module can directly bond the touch substrate and the display substrate through the optical adhesive layer, so that the display module can realize display and touch. In the related art, the frame width of the frame area of the touch module is large, which is not beneficial to the narrow frame design of the display module and reduces the product competitiveness. Disclosure of Invention The embodiment of the disclosure provides a display module and a display device thereof, which are used for solving or relieving one or more technical problems in the prior art. The display module comprises a display substrate, a printed circuit board, a touch substrate and a first flexible circuit board, wherein the display substrate comprises a display part positioned in the display region and a first frame positioned in the frame region, the printed circuit board is positioned on the backlight side of the display substrate, the touch substrate is positioned on the light emitting side of the display substrate, the touch substrate comprises a touch part positioned in the display region and a second frame positioned in the frame region, the second frame comprises a first sub-frame and a second sub-frame, the first sub-frame corresponds to the first frame, the second sub-frame is positioned on one side of the first sub-frame far away from the touch part, the first flexible circuit board comprises a first connecting part, a second connecting part and an intermediate connecting part, the first connecting part is coupled with the printed circuit board, the second connecting part is in lap contact with one side of the second sub-frame facing the display substrate, and two mutually adjacent ends of the first connecting part and the second connecting part are connected through the intermediate connecting part. In some possible embodiments, the middle connecting portion is inclined from the second connecting portion towards a direction away from the touch substrate, the display module further includes a second adhesive layer, the second adhesive layer is located on a side of the second connecting portion away from the touch substrate, and a boundary of a side of the second adhesive layer, which is close to the display area, is defined by the middle connecting portion. In some possible embodiments, the second adhesive layer includes a waterproof adhesive layer and a single-sided adhesive layer, the single-sided adhesive layer is located on a side of the second connection portion facing away from the touch substrate, and the waterproof adhesive layer is located on a side of the single-sided adhesive layer facing away from the touch substrate. In some possible embodiments, the second sub-frame includes a first sub-portion and a second sub-portion, the first sub-portion corresponds to the second connection portion, and the second sub-portion is located on a side of the first sub-portion away from the touch portion. In some possible embodiments, the second connection portion includes a second body portion, a first pad portion and a first body portion, which are sequentially far away from the display area, the intermediate connection portion is connected with the second body portion, a second pad portion is disposed on a side of the second sub-frame facing the display substrate, the first pad portion is in binding connection with the second pad portion, and a width of the second body portion is 0.5mm-1.75mm. In some possible embodiments, the width of the first body portion is 0.3mm to 0.6mm. In some possible embodiments, the width of the second rim is 4.15mm-5.4mm. In some possible embodiments, the display substrate is a flexible display substrate, and the display substrate further includes a bending portion and a binding portion, wherein the bending portion bends to enable the binding portion to be located on a backlight side of the display substrate, and the binding portion is coupled with the printed circuit board through the second flexible circuit board. In some possible embodiments, the display module further comprises a heat dissipation film layer, the heat dissipation film layer is located on the backlight side of the display substrate, a supporting structure is arranged between the binding portion and the heat dissipation film layer in a clamped mode, the printed circuit board is located on one side of the heat dissipation film layer, and the display module further comprises a driving chip, and the driving chip is located on the binding portion. As a second aspect of the embodiments of the present disclosure, the embodiments of the present disclosure provide a di