DISPLAY PANEL AND DISPLAY MODULE

• US 20200133420A1
• Filed: 12/15/2018
• Published: 04/30/2020
• Est. Priority Date: 10/31/2018
• Status: Active Grant

• Current Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Original Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Inventors: LU, Yantao
• Granted Patent: US 10,719,157 B2
• Time in Patent Office: Days
• CPC Class Codes: G02F 1/1345 Conductors connecting electrodes to cell terminals
• CPC Class Codes: G02F 1/13458 Terminal pads
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: H01L 25/18 the devices being of types provided for in two or more different subgroups of the same main group of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N
• CPC Class Codes: H01L 27/124 with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits wiring structures per se H01L23/52

Abstract

A display panel and a display module are provided. The display panel includes a display area, a driving chip on a side of the display area, and a fan-out wiring area connecting the display area and the driving chip. The driving chip includes a first side and two second sides respectively connected perpendicularly to both ends of the first side. The fan-out wiring area includes a plurality of first fan-out traces connected to the first side and a plurality of second fan-out traces respectively connected to the two second sides. A part of signals in the driving chip can be transmitted from the second sides of the driving chip to the display area through the second fan-out traces. This increases a total width of the fan-out wiring area and a trace width in the fan-out wiring area, avoids a risk of wire breakage, and reduces an impedance of the traces.

Claims

1. A display panel, comprising:

a display area;

a driving chip positioned on a side of the display area; and

a fan-out wiring area connecting the display area and the driving chip;

wherein the driving chip comprises a first side and two second sides respectively connected perpendicularly to both ends of the first side;

wherein the fan-out wiring area comprises a plurality of first fan-out traces connected to the first side and a plurality of second fan-out traces respectively connected to the two second sides.

2. The display panel according to claim 1, wherein the driving chip comprises a plurality of first internal traces extending toward the first side and a plurality of second internal traces extending respectively to the two second sides, the first fan-out traces are connected in one-to-one correspondence with the first internal traces, and the second fan-out traces are connected in one-to-one correspondence with the second internal traces.

3. The display panel according to claim 1, wherein the driving chip is provided with a plurality of output pins arranged along an extending direction of the first side, and the output pins are respectively connected to the first internal traces and the second internal traces.

4. The display panel according to claim 3, wherein a portion of the output pins adjacent to the two second sides are connected to the second internal traces.

5. The display panel according to claim 3, wherein the output pins comprise a plurality of mutually parallel data signal output pins and a plurality of mutually parallel touch signal output pins, the data signal output pins and the touch signal output pins are arranged in two rows, and the data signal output pins and the touch signal output pin are alternately arranged.

6. The display panel according to claim 5, wherein the first fan-out traces and the second fan-out traces respectively connect a plurality of signal lines in the display area, the signal lines comprise a plurality of data signal traces and a plurality of touch signal traces, the driving chip transmits a data signal to the data signal traces through the data signal output pins, the driving chip transmits a touch signal to the touch signal traces through the touch signal output pins.

7. The display panel according to claim 6, wherein each of the data signal output pins transmits one kind of data signal, and each of the touch signal output pins transmits one kind of touch signal.

8. The display panel according to claim 1, wherein a length of each of the second fan-out traces is greater than a length of each of the first fan-out traces.

9. The display panel according to claim 2, wherein an impedance of each of the second internal traces is less than an impedance of each of the first internal traces.

10. A display module comprising a display panel, the display panel comprising:

a display area;

a driving chip positioned on a side of the display area; and

a fan-out wiring area connecting the display area and the driving chip;

wherein the driving chip comprises a first side and two second sides respectively connected perpendicularly to both ends of the first side;

wherein the fan-out wiring area comprises a plurality of first fan-out traces connected to the first side and a plurality of second fan-out traces respectively connected to the two second sides.

11. The display module according to claim 10, wherein the driving chip comprises a plurality of first internal traces extending toward the first side and a plurality of second internal traces extending respectively to the two second sides, the first fan-out traces are connected in one-to-one correspondence with the first internal traces, and the second fan-out traces are connected in one-to-one correspondence with the second internal traces.

12. The display module according to claim 10, wherein the driving chip is provided with a plurality of output pins arranged along an extending direction of the first side, and the output pins are respectively connected to the first internal traces and the second internal traces.

13. The display module according to claim 12, wherein a portion of the output pins adjacent to the two second sides are connected to the second internal traces.

14. The display module according to claim 12, wherein the output pins comprise a plurality of mutually parallel data signal output pins and a plurality of mutually parallel touch signal output pins, the data signal output pins and the touch signal output pins are arranged in two rows, and the data signal output pins and the touch signal output pin are alternately arranged.

15. The display module according to claim 14, wherein the first fan-out traces and the second fan-out traces respectively connect a plurality of signal lines in the display area, the signal lines comprise a plurality of data signal traces and a plurality of touch signal traces, the driving chip transmits a data signal to the data signal traces through the data signal output pins, the driving chip transmits a touch signal to the touch signal traces through the touch signal output pins.

16. The display module according to claim 15, wherein each of the data signal output pins transmits one kind of data signal, and each of the touch signal output pins transmits one kind of touch signal.

17. The display module according to claim 10, wherein a length of each of the second fan-out traces is greater than a length of each of the first fan-out traces.

18. The display module according to claim 11, wherein an impedance of each of the second internal traces is less than an impedance of each of the first internal traces.