US-12628515-B2 - Display panel and display device

US12628515B2US 12628515 B2US12628515 B2US 12628515B2US-12628515-B2

Abstract

A display panel includes a base substrate, a circuit structure layer, a light emitting structure layer, and multiple conductive layers. The conductive layer is located between the circuit structure layer and the light emitting structure layer and includes multiple conductive lines. At least one second pixel drive circuit of the multiple second pixel drive circuits is electrically connected to at least one second light emitting device of the second light emitting devices through a conductive line, and the at least one second pixel drive circuit is configured to drive the at least one second light emitting device to emit light. There is an overlap between orthographic projections of the portions of conductive lines of at least two of the multiple conductive layers extending in the first direction on the base substrate.

Inventors

Xiaoqing SHU
Yao Huang
Jianchang CAI
Biao Liu
Jiangtao DENG
Huijuan Yang
Yi Zhang
Tingliang Liu
Maoying LIAO
Lingtong Li
Liheng Wei

Assignees

CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
BOE TECHNOLOGY GROUP CO., LTD.

Dates

Publication Date: 20260512
Application Date: 20220509
Priority Date: 20220301

Claims (17)

1 . A display panel having a display area, the display area comprises: a first region and a second region which are not overlapped with each other, the first region is located on at least one side of the second region; the display panel comprises: a base substrate; a circuit structure layer located on a side of the base substrate and comprising a plurality of second pixel drive circuits located in the first region; a light emitting structure layer located on a side of the circuit structure layer away from the base substrate and comprising a plurality of second light emitting devices located in the second region; a plurality of conductive layers located between the circuit structure layer and the light emitting structure layer and comprising a plurality of conductive lines; wherein at least one second pixel drive circuit of the plurality of second pixel drive circuits is electrically connected to at least one second light emitting device of the plurality of second light emitting devices through a conductive line of at least one conductive layer of the plurality of conductive layers, the at least one second pixel drive circuit is configured to drive the at least one second light emitting device to emit light; and orthographic projections of portions of conductive lines of at least two of the plurality of conductive layers extending in a first direction on the base substrate are overlapped, wherein the plurality of second light emitting devices in the second region comprise: a plurality of first type second light emitting devices and a plurality of second type second light emitting devices, the first type second light emitting devices are configured to emit light of a first color and the second type second light emitting devices are configured to emit light of a second color, and the second color is different from the first color, wherein the plurality of second light emitting devices in the second region comprises a plurality of sets of second light emitting devices, second light emitting devices in each of the plurality of sets of second light emitting devices are arranged along the first direction, the plurality of sets of second light emitting devices are arranged along a second direction, wherein the second direction intersects with the first direction; in at least one set of second light emitting devices, a plurality of second pixel drive circuits electrically connected to the plurality of first type second light emitting devices are closer to the second region than each of a plurality of second pixel drive circuits electrically connected to the plurality of second type second light emitting devices.
2 . The display panel according to claim 1 , wherein the plurality of conductive layers comprise: a first transparent conductive layer, a second transparent conductive layer, and a third transparent conductive layer arranged in sequence on a side away from the base substrate; the first transparent conductive layer comprises a plurality of first transparent conductive lines, the second transparent conductive layer comprises a plurality of second transparent conductive lines, and the third transparent conductive layer comprises a plurality of third transparent conductive lines; an orthographic projection of a portion of a first transparent conductive line of the first transparent conductive layer extending in the first direction on the base substrate is overlapped with an orthographic projection of a portion of a second transparent conductive line of the second transparent conductive layer extending in the first direction on the base substrate; and an orthographic projection of a portion of a third transparent conductive line of the third transparent conductive layer extending in the first direction on the base substrate is overlapped with an orthographic projection of a portion of a first transparent conductive line of the first transparent conductive layer and a portion of a second transparent conductive line of the second transparent conductive layer extending in the first direction on the base substrate.
3 . The display panel according to claim 2 , wherein in at least one set of second light emitting devices in the second region, a plurality of first type second light emitting devices near an edge of the second region are electrically connected to a plurality of second pixel drive circuits of the first region through a second transparent conductive line of the second transparent conductive layer, a plurality of first type second light emitting devices near a center of the second region are electrically connected to a plurality of second pixel drive circuits of the first region through a first transparent conductive line of the first transparent conductive layer.
4 . The display panel according to claim 3 , wherein in the at least one set of second light emitting devices in the second region, the second transparent conductive line and the first transparent conductive line to which the plurality of first type second light emitting devices are electrically connected are located on opposite sides or on a same side of the set of second light emitting devices in the second direction.
5 . The display panel according to claim 3 , wherein in the at least one set of second light emitting devices in the second region, a plurality of second type second light emitting devices near an edge of the second region are electrically connected to a plurality of second pixel drive circuits of the first region through a second transparent conductive line of the second transparent conductive layer, a plurality of second type second light emitting devices near the center of the second region are electrically connected to a plurality of second pixel drive circuits of the first region through a third transparent conductive line of the third transparent conductive layer.
6 . The display panel according to claim 5 , wherein in the at least one set of second light emitting devices in the second region, the second transparent conductive line and the third transparent conductive line to which the plurality of second type second light emitting devices are electrically connected are located on opposite sides or on a same side of the set of second light emitting devices in the second direction.
7 . The display panel according to claim 5 , wherein in the at least one set of second light emitting devices in the second region, the second transparent conductive line electrically connected to the first type second light emitting devices and the second transparent conductive line electrically connected to the second type second light emitting devices are located on opposite sides of the set of second light emitting devices in the second direction.
8 . The display panel according to claim 5 , wherein in the at least one set of second light emitting devices in the second region, a first transparent conductive line electrically connected to the first type second light emitting devices and a third transparent conductive line electrically connected to the second type second light emitting devices are located on a same side of the set of second light emitting devices in the second direction.
9 . The display panel according to claim 2 , wherein in at least one set of second light emitting devices in the second region, a plurality of first type second light emitting devices near an edge of the second region are electrically connected to a plurality of second pixel drive circuits of the first region through a first transparent conductive line of the first transparent conductive layer, a plurality of first type second light emitting devices near a center of the second region are electrically connected to a plurality of second pixel drive circuits of the first region through a second transparent conductive line of the second transparent conductive layer; and the first transparent conductive line and the second transparent conductive line electrically connected to the first type second light emitting devices are located on a same side of the set of second light emitting devices in the second direction.
10 . The display panel according to claim 9 , wherein in the at least one set of second light emitting devices in the second region, a plurality of second type second light emitting devices near an edge of the second region are electrically connected to a plurality of second pixel drive circuits of the first region through a second transparent conductive line of the second transparent conductive layer, a plurality of second type second light emitting devices near the center of the second region are electrically connected to a plurality of second pixel drive circuits of the first region through a third transparent conductive line of the third transparent conductive layer; and the second transparent conductive line electrically connected to the second type second light emitting devices and the second transparent conductive line electrically connected to the first type second light emitting devices are located on opposite sides of the set of second light emitting devices in the second direction.
11 . The display panel according to claim 1 , wherein the second region is divided into a first sub-region and a second sub-region, the second sub-region surrounds the first sub-region and is adjacent to the first region; and a parasitic capacitance between an anode connection node of at least one first type second light emitting device and an anode connection node of a second type second light emitting device located in the first sub-region is less than or equal to a maximum parasitic capacitance between an anode connection node of a first type second light emitting device and an anode connection node of a second type second light emitting device located in the second sub-region.
12 . The display panel according to claim 1 , wherein the light of the first color is green light and the light of the second color comprises at least one of: blue light, red light.
13 . The display panel according to claim 1 , wherein the circuit structure layer further comprises: a plurality of first pixel drive circuits located in the first region, and the light emitting structure layer further comprises: a plurality of first light emitting devices located in the first region; and at least one first pixel drive circuit of the plurality of first pixel drive circuits is electrically connected to at least one first light emitting device of the plurality of first light emitting devices, and the at least one first pixel drive circuit is configured to drive the at least one first light emitting device to emit light.
14 . A display device, comprising the display panel according to claim 1 .
15 . The display device according to claim 14 , further comprising: a sensor located on a non-display side of the display panel, and an orthographic projection of the sensor on the display panel overlaps with the second region of the display panel.
16 . The display panel according to claim 4 , wherein in the at least one set of second light emitting devices in the second region, a plurality of second type second light emitting devices near an edge of the second region are electrically connected to a plurality of second pixel drive circuits of the first region through a second transparent conductive line of the second transparent conductive layer, a plurality of second type second light emitting devices near the center of the second region are electrically connected to a plurality of second pixel drive circuits of the first region through a third transparent conductive line of the third transparent conductive layer.
17 . The display panel according to claim 6 , wherein in the at least one set of second light emitting devices in the second region, the second transparent conductive line electrically connected to the first type second light emitting devices and the second transparent conductive line electrically connected to the second type second light emitting devices are located on opposite sides of the set of second light emitting devices in the second direction.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS The present application is a U.S. National Phase Entry of International Application PCT/CN2022/091754, having an international filing date of May 9, 2022, and entitled “Display Panel and Display Device”, which claims priority of International Application No. PCT/CN2022/078680 filed on Mar. 1, 2022, the contents of the above-identified applications shall be construed as being incorporated herein by reference. TECHNICAL FIELD The present disclosure relates to, but is not limited to, the field of display technology, in particular to a display panel and a display device. BACKGROUND An Organic Light Emitting Diode (OLED) and a Quantum dot Light Emitting Diode (QLED) are active light emitting display devices and have advantages of self-luminescence, a wide viewing angle, a high contrast ratio, low power consumption, very high reaction speed, lightness and thinness, bendability, and low cost. An under screen camera technology is a brand-new technology proposed for increasing a screen-to-body ratio of a display device. SUMMARY The following is a summary of subject matter described herein in detail. The summary is not intended to limit the protection scope of claims. An embodiment of the present disclosure provides a display panel and a display device. In one aspect, an embodiment of the present disclosure provides a display panel having a display area, the display area includes: a first region and a second region which are not overlapped each other, the first region is located on at least one side of the second region; the display panel includes a base substrate, a circuit structure layer, a light emitting structure layer and multiple conductive layers. The circuit structure layer is located on a side of the base substrate and includes multiple second pixel drive circuits located in the first region. The light emitting structure layer is located on a side of the circuit structure layer away from the base substrate and includes multiple second light emitting devices located in a second region. Multiple conductive layers are located between the circuit structure layer and the light emitting structure layer, and include multiple conductive lines. At least one second pixel drive circuit of the multiple second pixel drive circuits is electrically connected to at least one second light emitting device of the multiple second light emitting devices through a conductive line of at least one conductive layer of the multiple conductive layers, the at least one second pixel drive circuit is configured to drive the at least one second light emitting device to emit light. There is an overlap between orthographic projections of portions of conductive lines of at least two of the multiple conductive layers extending in the first direction on the base substrate. In some exemplary embodiments, the multiple second light emitting devices in the second region include: multiple first type second light emitting devices and multiple second type second light emitting devices, the first type second light emitting devices are configured to emit light of a first color and the second type second light emitting devices are configured to emit light of a second color, wherein the second color is different from the first color. In some exemplary embodiments, the multiple second light emitting devices in the second region includes multiple sets of second light emitting devices, second light emitting devices in each of the multiple sets of second light emitting devices are arranged along the first direction, the multiple sets of second light emitting devices are arranged along the second direction, wherein the second direction intersects with the first direction. In the at least one set of second light emitting devices, multiple second pixel drive circuits electrically connected to the multiple first type second light emitting devices are closer to the second region than each of the multiple second pixel drive circuits electrically connected to the multiple second type second light emitting devices. In some exemplary embodiments, the multiple conductive layers include: a first transparent conductive layer, a second transparent conductive layer, and a third transparent conductive layer arranged in sequence along a side away from the base substrate. The first transparent conductive layer includes multiple first transparent conductive lines, the second transparent conductive layer includes multiple second transparent conductive lines, and the third transparent conductive layer includes multiple third transparent conductive lines. There is an overlap between an orthographic projection of a portion of a first transparent conductive line of the first transparent conductive layer extending in the first direction on the base substrate and an orthographic projection of a portion of a second transparent conductive line of the second transparent conductive layer extending in the first direction on the base substrate. The