DISPLAY APPARATUS, GLASS SUBSTRATE, AND METHOD OF MANUFACTURING GLASS SUBSTRATE

• US 20200135126A1
• Filed: 02/26/2019
• Published: 04/30/2020
• Est. Priority Date: 02/28/2018
• Status: Active Grant

• Current Assignee: Kyocera Corporation
• Original Assignee: Kyocera Corporation
• Inventors: YOKOYAMA, Ryoichi, SHIMIZU, Takashi
• Granted Patent: US 11,600,240 B2
• Time in Patent Office: Days
• CPC Class Codes: G09F 9/30 in which the desired character or characters are formed by combining individual elements panels comprising a number of electrodes in a single cell controlling light arriving from an independent light source, e.g. electro-optical or magneto-optical cell, G02F1/00
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence
• CPC Class Codes: H01L 25/0753 the devices being arranged next to each other
• CPC Class Codes: H01L 25/167 comprising optoelectronic devices, e.g. LED, photodiodes
• CPC Class Codes: H01L 33/62 Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
• CPC Class Codes: H10K 59/1213 the pixel elements being TFTs
• CPC Class Codes: H10K 59/131 Interconnections, e.g. wiring lines or terminals

Abstract

A display apparatus includes: a glass substrate; a light emitting device included in a pixel structure disposed on one principal surface of the glass substrate; an input electrode, disposed on the one principal surface, for inputting a driving signal to the light emitting device; and a back connection member disposed on the other principal surface of the glass substrate so as to be electrically connected to the input electrode. A back insulating layer is disposed on the other principal surface, and a top face of the back insulating layer is located above a top face of the back connection member.

Claims

1. A display apparatus, comprising:

a glass substrate comprising principal surfaces and a side face;

a pixel structure disposed on one principal surface of the principal surfaces of the glass substrate;

an input electrode, disposed on the one principal surface, for inputting a driving signal to the pixel structure;

a back connection member disposed on an other principal surface of the principal surfaces of the glass substrate so as to be electrically connected to the input electrode; and

a first insulating layer disposed on the other principal surface, the first insulating layer comprising a top face located above a top face of the back connection member.

2. The display apparatus according to claim 1, wherein the back connection member is covered with a second insulating layer, and

a top face of the second insulating layer is located below the top face of the first insulating layer.

3. The display apparatus according to claim 1, wherein the first insulating layer is located in a position corresponding to a placement position of the pixel structure.

4. The display apparatus according to claim 1, wherein a driver device for supplying driving signals is disposed on the other principal surface, and

a top face of a back wiring line for connecting the driver device and the back connection member is located below the top face of the first insulating layer.

5. The display apparatus according to claim 1, wherein a side wiring line is disposed on a side face of the glass substrate, and

the side wiring line connects the input electrode and the back connection member.

6. The display apparatus according to claim 5, wherein the back connection member comprises the back electrode and a back cover wiring line, and

the back cover wiring line comprises a material of the side wiring line.

7. A glass substrate, comprising:

a plurality of pixel structures disposed on one principal surface;

an input electrode, disposed on the one principal surface, for inputting a driving signal to the plurality of pixel structures;

a back connection member disposed on an other principal surface so as to be electrically connected to the input electrode; and

a first insulating layer on the other principal surface, the first insulating layer lying over an effective region comprising the plurality of pixel structures, the first insulating layer comprising a top face located above a top face of the back connection member.

8. The glass substrate according to claim 7, wherein the back connection member is covered with a second insulating layer, and

the top face of the first insulating layer is located above a top face of the second insulating layer.

9. The glass substrate according to claim 7, wherein a driver device that generates the driving signal is disposed on the other principal surface, and

the driver device is located in a position other than a placement position of the first insulating layer.

10. The glass substrate according to claim 7, wherein a side wiring line is disposed on a side face contiguous to the one principal surface and the other principal surface, and

the side wiring line connects the input electrode and the back connection member.

11. A method of manufacturing a glass substrate having a one principal surface side and an other principal surface side, the method comprising:

forming an input electrode on the one principal surface side, the input electrode for inputting a driving signal to a pixel structure;

forming a back connection member on the other principal surface side, the back connection member electrically connected to the input electrode;

forming a back electrode on the other principal surface side, the back electrode constituting the back connection member;

forming a side wiring line concurrently with forming the back connection member, the side wiring line for electrically connecting the input electrode and the back electrode;

thereafter forming a first insulating layer on the other principal surface side; and

locating a top face of the first insulating layer above a top face of the back connection member.

12. The method of manufacturing a glass substrate according to claim 11, further comprising:

forming a second insulating layer for covering the back connection member after forming the back connection member; and

locating a top face of the second insulating layer below the top face of the first insulating layer.

13. The method of manufacturing a glass substrate according to claim 11, further comprising:

mounting a driver device for driving the pixel structure in a position at which the first insulating layer is not formed on the other principal surface side after forming the first insulating layer.

14. A display apparatus, comprising:

a glass substrate comprising principal surfaces and a side face;

a pixel structure disposed on one principal surface side of the principal surfaces of the glass substrate;

a front connection member, comprising an input electrode, disposed on the one principal surface side, the input electrode for inputting a driving signal to the pixel structure;

a back connection member disposed on an other principal surface side of the principal surfaces of the glass substrate, the back connection member electrically connected to the input electrode;

a first insulating layer disposed on the other principal surface side, the first insulating layer comprising a top face located above a top face of the back connection member; and

a pixel-structure placement member on the one principal surface side, the pixel-structure placement member lying between the pixel structure and the glass substrate, the pixel-structure placement member comprising a top face located above a top face of the front connection member.

15. The display apparatus according to claim 14, wherein the back connection member and the front connection member are covered with a second insulating layer,

a top face of the second insulating layer, on the other principal surface side, is located below the top face of the first insulating layer, and

a top face of the second insulating layer, on the one principal surface side, is located below the top face of the pixel-structure placement member.