# US 12,118,935 B2 · Display substrate and display apparatus

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- Number: US 12,118,935 B2
- Document ID: US12118935B2
- Status: Granted
- Kind: B2
- Application number: 18/016,868
- Filed: 2022-01-30
- Published: 2024-07-25
- Granted: 2024-10-15
- Earliest claimed: 2022-01-30
- Assignees: Chengdu Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd.
- Applicants: Chengdu BOE Optoelectronics Technology Co., Ltd.; BOE Technology Group Co., Ltd.
- Inventors: Lu Bai; Tingliang Liu; Yi Zhang; Yang Zhou
- Web page: https://patentgrep.com/patent/US12118935B2

## CPC

- G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element
- G09G 3/3225: using an active matrix
- G09G 3/3266: Details of drivers for scan electrodes
- G11C 19/287: {Organisation of a multiplicity of shift registers}
- G09G 2310/0286: Details of a shift registers arranged for use in a driving circuit
- G09G 2310/061: for resetting or blanking
- G09G 2310/08: Details of timing specific for flat panels, other than clock recovery
- G09G 2330/021: Power management, e.g. power saving
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)
- G11C: STATIC STORES (semiconductor memory devices H10B)

## Abstract

A display substrate and a display apparatus are provided, wherein the display substrate includes a display area and a non-display area, wherein the non-display area includes a first bezel area and a transition area, the transition area including a first transition area; the display substrate includes a light emitting drive circuit, a scanning drive circuit, and a control drive circuit; the light emitting drive circuit includes multistage light emitting shift registers, the scanning drive circuit includes multistage scanning shift registers, and the control drive circuit includes multistage control shift registers; the first bezel area includes a first circuit group, the first transition area includes a second circuit group, and the first circuit group and the second circuit group include a Q1-stage light emitting shift register, a Q2-stage scanning shift register, and a Q3-stage control shift register.

## Claims

### Claim 1

A display substrate, comprising: a display area and a non-display area, wherein:
the display area comprises at least one rounded corner and a first bezel, one end of the first bezel is connected with one end of one rounded corner of the at least one rounded corner, and the non-display area comprises a first bezel area located outside the first bezel and a transition area located outside the rounded corner connected by the first bezel, wherein the first bezel area is adjacent to the transition area, and the transition area comprises a first transition area;
the display substrate comprises a base substrate and a drive circuit disposed on the base substrate, wherein the drive circuit comprises a pixel drive circuit arranged in an array located in the display area and a light emitting drive circuit, a scanning drive circuit, and a control drive circuit located in the non-display area; the light emitting drive circuit comprises multistage light emitting shift registers, the scanning drive circuit comprises multistage scanning shift registers, and the control drive circuit comprises multistage control shift registers; wherein a light emitting shift register, a scanning shift register, and a control shift register are different types of shift registers;
the first bezel area comprises a first circuit group, and the first transition area comprises a second circuit group, wherein the first circuit group and the second circuit group comprise: a Q1-stage light emitting shift register, a Q2-stage scanning shift register, and a Q3-stage control shift register, types of shift registers comprised in the first circuit group and the second circuit group are different, wherein quantities of rows of pixel drive circuits driven by the Q1-stage light emitting shift register, the Q2-stage scanning shift register, and the Q3-stage control shift register are the same, and Q1, Q2, and Q3 are positive integers greater than or equal to 1.

### Claim 2 (depends on 1)

The display substrate of claim 1, wherein the first circuit group comprises one or two types of shift registers in the Q1-stage light emitting shift register, the Q2-stage scanning shift register, and the Q3-stage control shift register, and the second circuit group comprises shift registers of other types except the types in the first circuit group in the Q1-stage light emitting shift register, the Q2-stage scanning shift register, and the Q3-stage control shift register.

### Claim 3 (depends on 2)

The display substrate of claim 2, wherein the first circuit group comprises the Q1-stage light emitting shift register, and the second circuit group comprises the Q2-stage scanning shift register and the Q3-stage control shift register, or, the first circuit group comprises the Q2-stage scanning shift register, and the second circuit group comprises the Q1-stage light emitting shift register and the Q3-stage control shift register, or, the first circuit group comprises the Q3-stage control shift register, and the second circuit group comprises the Q1-stage light emitting shift register and the Q2-stage scanning shift register, or, the first circuit group comprises the Q1-stage light emitting shift register and the Q2-stage scanning shift register, and the second circuit group comprises the Q3-stage control shift register, or, the first circuit group comprises the Q1-stage light emitting shift register and the Q3-stage control shift register, and the second circuit group comprises the Q2-stage scanning shift register, or, the first circuit group comprises the Q2-stage scanning shift register and the Q3-stage control shift register, and the second circuit group comprises the Q1-stage light emitting shift register.

### Claim 4 (depends on 1)

The display substrate of claim 1, wherein at least one pixel drive circuit comprises: a light emitting transistor, a write transistor, a reset transistor, and a compensation transistor, wherein a type of the compensation transistor and a type of the reset transistor are the same, types of the light emitting transistor and the write transistor are the same, and types of the write transistor and the compensation transistor are different;
the scanning drive circuit is disposed to supply a drive signal to the reset transistor and/or the compensation transistor, the control drive circuit is disposed to supply a drive signal to the write transistor, and the light emitting drive circuit is disposed to supply a drive signal to the light emitting transistor.

### Claim 5 (depends on 4)

The display substrate of claim 4, wherein the pixel drive circuit comprises: a reset signal terminal, a control signal terminal, and a scanning signal terminal, wherein the write transistor is electrically connected with the control signal terminal, the reset transistor is electrically connected with the reset signal terminal, the compensation transistor is electrically connected with the scanning signal terminal, and the light emitting transistor is electrically connected with a light emitting signal terminal; and
the display substrate further comprises: M reset signal lines, M control signal lines, M scanning signal lines, and M light emitting signal lines;
the M reset signal lines, the M control signal lines, the M scanning signal lines, and the M light emitting signal lines extend along a second direction and are arranged along a first direction, wherein the first direction and the second direction are intersected, and the second direction is an extension direction of the first bezel; and
for an s-th line pixel drive circuit, the reset signal terminal is electrically connected with an s-th reset signal line, the control signal terminal is electrically connected with an s-th control signal line, the scanning signal terminal is electrically connected with an s-th scanning signal line, and the light emitting signal terminal is electrically connected with an s-th light emitting signal line, wherein 1≤s≤M.

### Claim 6 (depends on 5)

The display substrate of claim 5, wherein the light emitting drive circuit comprises: M1 cascaded light emitting shift registers, wherein at least one stage of the light emitting shift registers is electrically connected with K1 light emitting signal lines, wherein M=M1×K1, and K1 is a positive integer greater than or equal to 1;
an a-th stage of the light emitting shift registers is electrically connected with an ((a−1)×K1+1)-th light emitting signal line to an a×K1-th light emitting signal line, respectively, wherein 1≤a≤M1;
the scanning drive circuit comprises: M2 cascaded scanning shift registers, wherein at least one stage of the scanning shift registers is electrically connected with K2 reset signal lines and/or K2 scanning signal lines, respectively, wherein M2=P×M1+S, P=K1/K2, and S, P, and K2 are all positive integers greater than or equal to 1;
a b-th stage of the scanning shift registers is electrically connected with a ((b−1)×K2+1)-th reset signal line to a b×K2-th reset signal line, respectively, wherein 1≤b≤M2−S;
a c-th stage of the scanning shift registers is electrically connected with a ((c−S−1)×K2+1)-th scanning signal line to a (c−S)×K2-th scanning signal line, respectively, wherein S+1≤c≤M2;
the control drive circuit comprises: M3 cascaded control shift registers, wherein at least one stage of the control shift registers is electrically connected with K3 control signal lines, wherein M3=Q×M1, Q=K1/K3, and Q and K3 are both positive integers greater than or equal to 1; and
a d-th stage of the light emitting shift registers is electrically connected with a ((d−1)×K3+1)-th control signal line to a d×K3-th light emitting signal line, respectively, wherein 1≤d≤M3.

### Claim 7 (depends on 6)

The display substrate of claim 6, wherein a first stage of the scanning shift registers to an S-th stage of the scanning shift registers are located in the first bezel area, and the first stage of the scanning shift registers to the S-th stage of the scanning shift registers are arranged along the second direction.

### Claim 8 (depends on 6)

The display substrate of claim 6, wherein the first circuit group and the second circuit group comprise: a first stage of the light emitting shift registers to a T1-th stage of the light emitting shift registers, an (S+1)-th stage of the scanning shift registers to a T2-th stage of the scanning shift registers, and a first stage of the control shift registers to a T3-th stage of the control shift registers, wherein Q1=T1, Q2=T2−S, Q3=T3, T2=P×T1+S, and T3=Q×T1.

### Claim 9 (depends on 8)

The display substrate of claim 8, wherein based on a determination that the first circuit group comprises the first stage of the light emitting shift registers to the T1-th stage of the light emitting shift registers, and the second circuit group comprises an (S+1)-th stage of the scanning shift registers to the T2-th stage of the scanning shift registers and the first stage of the control shift registers to the T3-th stage of the control shift registers, the first stage of the control shift registers to the T3-th stage of the control shift registers are located at a side of the (S+1)-th stage of the scanning shift registers to the T2-th stage of the scanning shift registers close to the display area;
the first stage of the light emitting shift registers to the T1-th stage of the light emitting shift registers are arranged along the second direction, the (S+1)-th stage of the scanning shift registers to the T2-th stage of the scanning shift registers are arranged along a boundary of the rounded corner, and the first stage of the control shift registers to the T3-th stage of the control shift registers are arranged along the boundary of the rounded corner; and
the first stage of the light emitting shift registers to the T1-th stage of the light emitting shift registers and a first stage of the scanning shift registers to an S-th stage of the scanning shift registers are arranged along the second direction, or, the first stage of the light emitting shift registers to the T1-th stage of the light emitting shift registers are located at a side of the first stage of the scanning shift registers to the S-th stage of the scanning shift registers away from the display area.

### Claim 10 (depends on 8)

The display substrate of claim 8, wherein based on a determination that the first circuit group comprises the (S+1)-th stage of the scanning shift registers to the T2-th stage of the scanning shift registers, and the second circuit group comprises the first stage of the light emitting shift registers to the T1-th stage of the light emitting shift registers and the first stage of the control shift registers to the T3-th stage of the control shift registers, the first stage of the light emitting shift registers to the T1-th stage of the light emitting shift registers are located at a side of the first stage of the control shift registers to the T3-th stage of the control shift registers away from the display area;
the first stage of the scanning shift registers to the T2-th stage of the scanning shift registers are arranged along the second direction, the first stage of the light emitting shift registers to the T1-th stage of the light emitting shift registers are arranged along a boundary of the rounded corner, and the first stage of the control shift registers to the T3-th stage of the control shift registers are arranged along the boundary of the rounded corner.

### Claim 11 (depends on 8)

The display substrate of claim 8, wherein based on a determination that the first circuit group comprises the first stage of the control shift registers to the T3-th stage of the control shift registers, and the second circuit group comprises the (S+1)-th stage of the scanning shift registers to the T2-th stage of the scanning shift registers and the first stage of the light emitting shift registers to the T1-th stage of the light emitting shift registers, the (S+1)-th stage of the scanning shift registers to the T2-th stage of the scanning shift registers are located at a side of the first stage of the light emitting shift registers to the T1-th stage of the light emitting shift registers close to the display area;
the first stage of the control shift registers to the T3-th stage of the control shift registers are arranged along the second direction, the first stage of the light emitting shift registers to the T1-th stage of the light emitting shift registers are arranged along a boundary of the rounded corner, and the (S+1)-th stage of the scanning shift registers to the T2-th stage of the scanning shift registers are arranged along the boundary of the rounded corner; and
the first stage of the control shift registers to the T3-th stage of the control shift registers and a first stage of the scanning shift registers to an S-th stage of the scanning shift registers are arranged along the second direction, or, the first stage of the control shift registers to the T3-th stage of the control shift registers are located at a side of the first stage of the scanning shift registers to the S-th stage of the scanning shift registers close to the display area.

### Claim 12 (depends on 8)

The display substrate of claim 8, wherein based on a determination that the first circuit group comprises the first stage of the light emitting shift registers to the T1-th stage of the light emitting shift registers and the (S+1)-th stage of the scanning shift registers to the T2-th stage of the scanning shift registers, and the second circuit group comprises the first stage of the control shift registers to the T3-th stage of the control shift registers, the first stage of the light emitting shift registers to the T1-th stage of the light emitting shift registers are located at a side of the (S+1)-th stage of the scanning shift registers to the T2-th stage of the scanning shift registers away from the display area;
the first stage of the light emitting shift registers to the T1-th stage of the light emitting shift registers are arranged along the second direction, a first stage of the scanning shift registers to the T2-th stage of the scanning shift registers are arranged along the second direction, and the first stage of the control shift registers to the T3-th stage of the control shift registers are arranged along a boundary of the rounded corner.

### Claim 13 (depends on 8)

The display substrate of claim 8, wherein based on a determination that the first circuit group comprises the first stage of the light emitting shift registers to the T1-th stage of the light emitting shift registers and the first stage of the control shift registers to the T3-th stage of the control shift registers, and the second circuit group comprises the (S+1)-th stage of the scanning shift registers to the T2-th stage of the scanning shift registers, the first stage of the light emitting shift registers to the T1-th stage of the light emitting shift registers are located at a side of the first stage of the control shift registers to the T3-th stage of the control shift registers away from the display area;
the first stage of the light emitting shift registers to the T1-th stage of the light emitting shift registers are arranged along the second direction, the first stage of the control shift registers to the T3-th stage of the control shift registers are arranged along the second direction, and the (S+1)-th stage of the scanning shift registers to the T2-th stage of the scanning shift registers are arranged along a boundary of the rounded corner; and
the first stage of the light emitting shift registers to the T1-th stage of the light emitting shift registers and a first stage of the scanning shift registers to an S-th stage of the scanning shift registers are arranged along the second direction, or, the first stage of the control shift registers to the T3-th stage of the control shift registers and the first stage of the scanning shift registers to the S-th stage of the scanning shift registers are arranged along the second direction, or, the first stage of the light emitting shift registers to the T1-th stage of the light emitting shift registers are located at a side of the first stage of the scanning shift registers to the S-th stage of the scanning shift registers away from the display area, and the first stage of the control shift registers to the T3-th stage of the control shift registers are located at a side of the first stage of the scanning shift registers to the S-th stage of the scanning shift registers close to the display area.

### Claim 14 (depends on 8)

The display substrate of claim 8, wherein based on a determination that the first circuit group comprises the (S+1)-th stage of the scanning shift registers to the T2-th stage of the scanning shift registers and the first stage of the control shift registers to the T3-th stage of the control shift registers, and the second circuit group comprises the first stage of the light emitting shift registers to the T1-th stage of the light emitting shift registers, the first stage of the control shift registers to the T3-th stage of the control shift registers are located at a side of the (S+1)-th stage of the scanning shift registers to the T2-th stage of the scanning shift registers close to the display area;
the first stage of the control shift registers to the T3-th stage of the control shift registers are arranged along the second direction, the first stage of the scanning shift registers to the T2-th stage of the scanning shift registers are arranged along the second direction, and the first stage of the light emitting shift registers to the T1-th stage of the light emitting shift registers are arranged along a boundary of the rounded corner.

### Claim 15 (depends on 9)

The display substrate of claim 9, wherein the transition area further comprises: a second transition area, the second transition area being located on a side of the first transition area away from the first bezel area, the display area further comprises: a second bezel extending along the first direction, the second bezel being connected with another end of the rounded corner connected by the first bezel, and the non-display area further comprises: a second bezel area located outside the second bezel, the first bezel area and the second bezel area being located at two sides of the transition area;
a (T1+1)-th stage of the light emitting shift registers to an M1-th stage of the light emitting shift registers, a (T2+1)-th stage of the scanning shift registers to an M2-th stage of the scanning shift registers and a (T3+1)-th stage of the control shift registers to an M3-th stage of the control shift registers are located in the second transition area and the second bezel area;
the (T1+1)-th stage of the light emitting shift registers to the M1-th stage of the light emitting shift registers are located at a side of the (T2+1)-th stage of the scanning shift registers to the M2-th stage of the scanning shift registers away from the display area, and the (T3+1)-th stage of the control shift registers to the M3-th stage of the control shift registers are located at a side of the (T2+1)-th stage of the scanning shift registers to the M2-th stage of the scanning shift registers close to the display area;
multistage light emitting shift registers located in the second transition area are arranged along a boundary of the rounded corner, multistage scanning shift registers located in the second transition area are arranged along the boundary of the rounded corner, multistage control shift registers located in the second transition area are arranged along the boundary of the rounded corner, multistage light emitting shift registers located in the second bezel area are arranged along the first direction, multistage scanning shift registers located in the second bezel area are arranged along the first direction, and multistage control shift registers located in the second bezel area are arranged along the first direction.

### Claim 16 (depends on 6)

The display substrate of claim 6, further comprising: a plurality of reset output lines and a plurality of scanning output lines, and at least one stage of the scanning shift registers comprises: a signal output line;
the plurality of reset output lines are electrically connected with signal output lines of a first stage of the scanning shift registers to an (M2−S)-th stage of the scanning shift registers, respectively, and the plurality of scanning output lines are electrically connected with signal output lines of an (S+1)-th stage of the scanning shift registers to an M2-th stage of the scanning shift registers, respectively;
a b-th reset output line is electrically connected with a ((b−1)×K2+1)-th reset signal line to a b×K2-th reset signal line, respectively; and
an e-th scanning output line is electrically connected with an ((e−1)×K2+1)-th scanning signal line to an e×K2-th scanning signal line, respectively, wherein 1≤e≤M2−S.

### Claim 17 (depends on 16)

The display substrate of claim 16, wherein the plurality of reset output lines are located between the control drive circuit and the display area and are disposed in a different layer from the signal output lines, and there is no overlapping area between an orthographic projection of the reset output lines on the base substrate and an orthographic projection of the signal output lines on the base substrate.

### Claim 18 (depends on 16)

The display substrate of claim 16, further comprising: S signal connection portions; the signal connection portions are disposed in a different layer from the signal output lines and the reset output lines;
an i-th signal connection portion is electrically connected with a signal output line of an i-th scanning shift register and an i-th reset output line, respectively, wherein 1≤i≤S, an orthographic projection of the i-th signal connection portion on the base substrate is partially overlapped with an orthographic projection of the signal output line of the i-th scanning shift register on the base substrate, and the orthographic projection of the i-th signal connection portion on the base substrate is partially overlapped with an orthographic projection of the i-th reset output line on the base substrate.

### Claim 19 (depends on 16)

The display substrate of claim 16, wherein the e-th scanning output line comprises: a first scanning wiring, a second scanning wiring, and K2 third scanning wirings; the first scanning wiring and the second scanning wiring are disposed in different layers, and the first scanning wiring and the third scanning wirings are disposed in a same layer;
the first scanning wiring is electrically connected with a signal output line of an (S+e)-th stage of the scanning shift registers and the second scanning wiring, respectively, and an orthographic projection of the first scanning wiring on the base substrate is partially overlapped with an orthographic projection of the signal output line of the (S+e)-th stage of the scanning shift registers on the base substrate, and the orthographic projection of the first scanning wiring on the base substrate is partially overlapped with an orthographic projection of the second scanning wiring on the base substrate;
the second scanning wiring is electrically connected with the K2 third scanning wirings, respectively, and an orthographic projection of the second scanning wiring on the base substrate is partially overlapped with an orthographic projection of the K2 third scanning wirings on the base substrate;
the K2 third scanning wirings are electrically connected with the ((e−1)×K2+1)-th scanning signal line to the e×K2-th scanning signal line, respectively, and an orthographic projection of a z-th third scanning wiring on the base substrate is partially overlapped with an orthographic projection of an ((e−1)×K2+z)-th scanning signal line on the base substrate, wherein 1≤z≤K2.

### Claim 20 (depends on 1)

A display apparatus, comprising the display substrate of claim 1.