Display device

• US 20090213039A1
• Filed: 02/21/2008
• Published: 08/27/2009
• Est. Priority Date: 02/21/2008
• Status: Abandoned Application

• Current Assignee: Toppan Printing Co., Ltd. (TOPPAN Holdings, Inc.)
• Original Assignee: Toppan Printing Co., Ltd. (TOPPAN Holdings, Inc.)
• Inventors: Ito, Manabu
• Application Number:
  US12/072,036
• Publication Number:
  US 20090213039A1
• Time in Patent Office: Days
• US Class Current: 345/30
• CPC Class Codes: G02F 1/1333 Constructional arrangements; Manufacturing methodsG02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/167 by electrophoresis
• CPC Class Codes: H01L 27/12 the substrate being other than a semiconductor body, e.g. an insulating body
• CPC Class Codes: H01L 27/1225 with semiconductor materials not belonging to the group IV of the periodic table, e.g. InGaZnO
• 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

One embodiment of the present invention is a display device being visible from both sides, including a substantially transparent semiconductor circuit having a substantially transparent thin film transistor on one surface of a substantially transparent substrate and a wiring made of a substantially transparent conductive material, the wiring having an electric contact point electrically connected to the transistor, and a display element being driven by the semiconductor circuit.

Claims

1. A display device being visible from both sides, comprising:

a substantially transparent semiconductor circuit having;

a substantially transparent thin film transistor on one surface of a substantially transparent substrate;

a wiring made of a substantially transparent conductive material, said wiring having an electric contact point electrically connected to said transistor; and

a display element being driven by said semiconductor circuit.

2. The display device being visible from both sides according to claim 1, wherein said display element includes a reflection type display element.

3. The display device being visible from both sides according to claim 1, wherein said display element includes a light emitting type display element.

4. The display device being visible from both sides according to claim 1, wherein there is only one display element.

5. The display device being visible from both sides according to claim 1, wherein said thin film transistor includes a source electrode, a drain electrode and a gate electrode, a semiconductor active layer and a gate insulator, and wherein said semiconductor active layer includes a material in which a main component is a metal oxide.

6. The display device being visible from both sides according to claim 1, wherein said thin film transistor includes a source electrode, a drain electrode and a gate electrode, a semiconductor active layer and a gate insulator, and wherein said semiconductor active layer includes a material in which a main component is an organic material.