Display device

• US 8,927,994 B2
• Filed: 03/11/2014
• Issued: 01/06/2015
• Est. Priority Date: 05/13/2002
• Status: Expired due to Term

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Yamazaki, Shunpei, Murakami, Satoshi, Osame, Mitsuaki
• Primary Examiner(s): Huynh, Andy
• Application Number:
  US14/204,342
• Publication Number:
  US 20140191239A1
• Time in Patent Office: 301 Days
• Field of Search: 257/40, 257/59, 257/72, 257/E21.033, 257/E21.414, 257/E29.117
• US Class Current: 257/59
• CPC Class Codes: H01L 27/1214 comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
• 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
• CPC Class Codes: H01L 27/1248 with a particular composition or shape of the interlayer dielectric specially adapted to the circuit arrangement
• CPC Class Codes: H01L 27/1255 integrated with passive devices, e.g. auxiliary capacitors
• CPC Class Codes: H01L 29/4958 with a multiple layer structure
• CPC Class Codes: H01L 29/4966 the conductor material next to the insulator being a composite material, e.g. organic material, TiN, MoSi2 H01L29/4908, H01L29/4983 take precedence
• CPC Class Codes: H01L 29/78645 with multiple gate
• CPC Class Codes: H10K 2102/3026 Top emission
• CPC Class Codes: H10K 50/84 Passivation; Containers; Encapsulations
• CPC Class Codes: H10K 50/841 Self-supporting sealing arrangements
• CPC Class Codes: H10K 50/844 Encapsulations
• CPC Class Codes: H10K 50/856 comprising reflective means
• CPC Class Codes: H10K 59/12 Active-matrix OLED [AMOLED] displays
• CPC Class Codes: H10K 59/121 characterised by the geometry or disposition of pixel elements
• CPC Class Codes: H10K 59/1213 the pixel elements being TFTs
• CPC Class Codes: H10K 59/122 Pixel-defining structures or layers, e.g. banks
• CPC Class Codes: H10K 59/124 Insulating layers formed between TFT elements and OLED elements
• CPC Class Codes: H10K 59/871 Self-supporting sealing arrangements
• CPC Class Codes: H10K 59/873 Encapsulations
• CPC Class Codes: H10K 59/878 comprising reflective means

Abstract

Disclosed is a display device and an electronic apparatus incorporating the display device. The display device includes a transistor and a planarization film over the transistor. The planarization film has an opening where an edge portion is rounded. The display device further includes a first electrode over the planarization film and an organic resin film over the first electrode. The organic resin film also has an opening where an edge portion is rounded. The organic resin film is located in the opening of the planarization film. The first electrode and the transistor are electrically connected to each other through a conductive film. The first electrode is in contact with a top surface of the conductive film. Over the first electrode, a light-emitting member and a second electrode are provided.

Claims

1. A display device comprising:

a glass substrate;

a first insulating film over the glass substrate;

a first semiconductor film over the first insulating film;

a second semiconductor film over the first insulating film;

a second insulating film over the first semiconductor film and the second semiconductor film;

a first conductive film over the second insulating film, wherein the first conductive film and the first semiconductor film overlap with each other;

a second conductive film over the second insulating film, wherein the second conductive film and the second semiconductor film overlap with each other;

a first silicon nitride film over the second insulating film, the first conductive film, and the second conductive film;

an organic resin film over the first silicon nitride film;

a second silicon nitride film over the organic resin film; and

an electrode over the second silicon nitride film;

wherein the first semiconductor film and the first conductive film are provided in a pixel portion,

wherein the second semiconductor film and the second conductive film are provided out of the pixel portion,

wherein the organic resin film comprises a first region overlapping with the first semiconductor film,

wherein the organic resin film comprises a second region overlapping with the second semiconductor film,

wherein the first conductive film and the second conductive film each comprise a region functioning as a gate electrode,

wherein the first silicon nitride film comprises a first opening,

wherein the organic resin film comprises a second opening,

wherein the second silicon nitride film comprises a third opening,

wherein the first opening comprises a region overlapping with the second opening,

wherein the first opening comprises a region overlapping with the third opening,

wherein the second opening comprises a region overlapping with the third opening,

wherein the first opening is smaller than the second opening,

wherein the third opening is smaller than the second opening,

wherein the second silicon nitride film comprises a first region over an upper surface of the organic resin film and a second region facing a side surface of the organic resin film in the second opening,

wherein the first silicon nitride film comprises a region in contact with the second silicon nitride film in the second opening,

wherein the electrode is electrically connected to the first semiconductor film through the first opening and the third opening, and

wherein the electrode comprises a first region facing a side surface of the first silicon nitride film in the first opening and a second region facing a side surface of the second silicon nitride film in the third opening.

2. The display device according to claim 1, further comprising a light emitting member over the electrode.

3. The display device according to claim 1, comprising a protective circuit comprising the second semiconductor film and the second conductive film.

4. The display device according to claim 1, further comprising a drain electrode over the second silicon nitride film, wherein the drain electrode is electrically connected to the first semiconductor film and the electrode.

5. A mobile computer comprising the display device according to claim 1.

6. A cellular phone comprising the display device according to claim 1.

7. A display device comprising:

a glass substrate;

a first insulating film over the glass substrate;

a first semiconductor film over the first insulating film;

a second semiconductor film over the first insulating film;

a second insulating film over the first semiconductor film and the second semiconductor film;

a first conductive film over the second insulating film, wherein the first conductive film and the first semiconductor film overlap with each other;

a second conductive film over the second insulating film, wherein the second conductive film and the second semiconductor film overlap with each other;

a first barrier layer over the second insulating film, the first conductive film, and the second conductive film;

an organic resin film over the first barrier layer;

a second barrier layer over the organic resin film; and

an electrode over the second barrier layer;

wherein the first semiconductor film and the first conductive film are provided in a pixel portion,

wherein the second semiconductor film and the second conductive film are provided out of the pixel portion,

wherein the organic resin film comprises a first region overlapping with the first semiconductor film,

wherein the organic resin film comprises a second region overlapping with the second semiconductor film,

wherein the first conductive film and the second conductive film each comprise a region functioning as a gate electrode,

wherein the first barrier layer comprises a first opening,

wherein the organic resin film comprises a second opening,

wherein the second barrier layer comprises a third opening,

wherein the first opening comprises a region overlapping with the second opening,

wherein the first opening comprises a region overlapping with the third opening,

wherein the second opening comprises a region overlapping with the third opening,

wherein the first opening is smaller than the second opening,

wherein the third opening is smaller than the second opening,

wherein the second barrier layer comprises a first region over an upper surface of the organic resin film and a second region facing a side surface of the organic resin film in the second opening,

wherein the first barrier layer comprises a region in contact with the second barrier layer in the second opening,

wherein the electrode is electrically connected to the first semiconductor film through the first opening and the third opening, and

wherein the electrode comprises a first region facing a side surface of the first barrier layer in the first opening and a second region facing a side surface of the second barrier layer in the third opening.

8. The display device according to claim 7, further comprising a light emitting member over the electrode.

9. The display device according to claim 7, comprising a protective circuit comprising the second semiconductor film and the second conductive film.

10. The display device according to claim 7, further comprising a drain electrode over the second barrier layer, wherein the drain electrode is electrically connected to the first semiconductor film and the electrode.

11. A mobile computer comprising the display device according to claim 7.

12. A cellular phone comprising the display device according to claim 7.