Display Apparatus

Patent metadata

Field	Value
Publication number	US-2024090285-A1
Application number	US-202118274200-A
Country	US
Kind code	A1
Filing date	Dec 23, 2021
Priority date	Dec 23, 2021
Publication date	Mar 14, 2024
Grant date	—

Abstract

Disclosed is a display apparatus comprising a display area and a dummy area; the display area comprises multiple pixel driving circuits and multiple display light-emitting devices, and the display light-emitting devices at least comprise a display anode and a display cathode; the dummy region comprises a cathode voltage line, at least one dummy anode connection line and multiple dummy light-emitting devices, the dummy light-emitting devices at least comprise a dummy anode and a dummy cathode; the display cathode and the dummy cathode are both connected to the cathode voltage line, the display anode being connected to a pixel driving circuit, and the dummy anode is connected to a dummy anode connection line, the dummy anode connection line being configured to cause the voltage differential between the dummy anode and the dummy cathode to be less than the turn-on voltage of the dummy light-emitting device.

First claim

1 . A display apparatus, comprising a display region and a dummy region located on at least one side of the display region, wherein the display region comprises a plurality of pixel drive circuits and a plurality of display light emitting devices, a display light emitting device comprises a display anode, a display cathode, and a display emitting layer disposed between the display anode and the display cathode; the dummy region comprises a cathode voltage line, at least one dummy anode connection line, and a plurality of dummy light emitting devices, a dummy light emitting device comprises a dummy anode, a dummy cathode, and a dummy emitting layer disposed between the dummy anode and the dummy cathode; both the display cathode and the dummy cathode are connected with the cathode voltage line, the display anode is connected with a pixel drive circuit, the dummy anode is connected with the dummy anode connection line, and the dummy anode connection line is configured such that a voltage difference between the dummy anode and the dummy cathode is less than a light-up voltage of the dummy light emitting device.

2 . The display apparatus according to claim 1 , wherein the dummy anode connection line is connected with the cathode voltage line.

3 . The display apparatus according to claim 1 , wherein the dummy anode connection line is in a shape of a strip extending along a first extension direction, a plurality of dummy anode connection lines are disposed in sequence along a second extension direction, the first extension direction is a direction away from the display region, and the second extension direction is a direction perpendicular to the first extension direction.

4 . The display apparatus according to claim 3 , wherein the dummy anode connection line comprises a first connection line and a second connection line with different extension lengths, and the first connection line and the second connection line are disposed alternately along the second extension direction.

5 . The display apparatus according to claim 1 , wherein the display apparatus further comprises a transition region, the transition region is located between the display region and the dummy region, the transition region comprises a transition anode connection line and a plurality of transition light emitting devices, a transition light emitting device comprises a transition anode, a transition cathode, and a transition emitting layer disposed between the transition anode and the transition cathode, the transition cathode is connected with the cathode voltage line, the transition anode is connected with the transition anode connection line, the transition anode connection line is a monolithic metal layer extending along a column direction, and the transition anode connection line is configured such that a voltage difference between the transition anode and the transition cathode is less than a light-up voltage of the transition light emitting device.

6 . The display apparatus according to claim 5 , wherein the transition anode connection line is connected with the cathode voltage line.

7 . The display apparatus according to claim 5 , wherein a width of the transition anode connection line is greater than a width of the cathode voltage line;
or, a width of the transition anode connection line is greater than a width of the dummy anode connection line; or, a width of the transition anode connection line is greater than a width of the transition anode.

8 - 9 . (canceled)

10 . The display apparatus according to claim 5 , wherein a length of the transition anode connection line is less than an extension length of the cathode voltage line;
or, a length of the transition anode connection line is greater than an extension length of the dummy anode connection line.

11 . (canceled)

12 . The display apparatus according to claim 5 , wherein a width of the dummy anode connection line is less than a width of the cathode voltage line.

13 . The display apparatus according to claim 5 , wherein a quantity of dummy light emitting devices in the dummy region is different from a quantity of transition light emitting devices in the transition region.

14 . The display apparatus according to claim 13 , wherein a quantity of dummy light emitting devices in the dummy region is greater than a quantity of transition light emitting devices in the transition region.

15 . The display apparatus according to claim 5 , wherein an orthographic projection of at least one dummy light emitting device on a plane of the display apparatus is at least partially overlapped with an orthographic projection of the transition anode connection line on the plane of the display apparatus.

16 . The display apparatus according to claim 5 , wherein an orthographic projection of at least one transition light emitting device on a plane of the display apparatus is not overlapped with an orthographic projection of the dummy anode connection line on the plane of the display apparatus.

17 . The display apparatus according to claim 5 , wherein the transition anode is connected with the transition anode connection line through a transition anode via, and the dummy anode is connected with the dummy anode connection line through a dummy anode via, and the dummy anode via and the transition anode via are not on a same straight line along a row direction.

18 . The display apparatus according to claim 5 , wherein on both sides of the display apparatus in a row direction, the transition region and the dummy region comprise three columns of light emitting devices, and each column of light emitting devices comprises a plurality of dummy light emitting devices or a plurality of transition light emitting devices disposed in sequence along a column direction.

19 . The display apparatus according to claim 5 , wherein on both sides of the display apparatus in a column direction, the dummy region comprises two rows of light emitting devices, and each row of light emitting devices comprises a plurality of dummy light emitting devices disposed in sequence along a row direction.

20 . The display apparatus according to claim 1 , wherein on a plane perpendicular to the display apparatus, the display apparatus comprises a silicon substrate, a drive circuit layer disposed on the silicon substrate, and a light emitting structure layer disposed on one side of the drive circuit layer away from the silicon substrate; the drive circuit layer comprises a first conductive layer, a second conductive layer, a third conductive layer, a fourth conductive layer, a fifth conductive layer, a sixth conductive layer, a seventh conductive layer, and an eighth conductive layer disposed in sequence on the silicon substrate, and the cathode voltage line is disposed in the eighth conductive layer.

21 . The display apparatus according to claim 20 , wherein the transition anode connection line, the dummy anode connection line, and the cathode voltage line are disposed in a same layer.

22 . The display apparatus according to claim 20 , wherein the drive circuit layer in the display region comprises a plurality of repetitive units, at least one repetitive unit comprises a plurality of pixel drive circuits, at least one pixel drive circuit comprises a first transistor, a second transistor, a third transistor, and a storage capacitor, a control electrode of the first transistor is connected with a scan signal line, a first electrode of the first transistor is connected with a data signal line, a control electrode of the second tran

Assignees

• Yunnan Invensight Optoelectronics Technology Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Wei Junbo
• Yang Shengji
• Lu Pengcheng
• Huang Kuanta
• Tian Yuanlan

Classifications

• H10K59/131 Primary

  Interconnections, e.g. wiring lines or terminals · CPC title

• H10K59/88 Primary

  Dummy elements, i.e. elements having non-functional features · CPC title

• G09G3/32

  semiconductive, e.g. using light-emitting diodes [LED] · CPC title