Active matrix type display apparatus

• US 20020070909A1
• Filed: 11/21/2001
• Published: 06/13/2002
• Est. Priority Date: 11/22/2000
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Sekiya, Mitsunobu, Yamada, Jiro, Asano, Mitsuru, Mori, Takao
• Granted Patent: US 6,768,482 B2
• Time in Patent Office: Days
• US Class Current: 345/76
• CPC Class Codes: G09G 2300/0452 Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
• CPC Class Codes: G09G 2300/0804 Sub-multiplexed active matrix panel, i.e. wherein one active driving circuit is used at pixel level for multiple image producing elements
• CPC Class Codes: G09G 2300/0814 used for selection purposes, e.g. logical AND for partial update
• CPC Class Codes: G09G 2300/0842 forming a memory circuit, e.g. a dynamic memory with one capacitor
• CPC Class Codes: G09G 3/3233 with pixel circuitry controlling the current through the light-emitting element
• CPC Class Codes: H10K 59/121 characterised by the geometry or disposition of pixel elements
• CPC Class Codes: H10K 59/123 Connection of the pixel electrodes to the thin film transistors [TFT]
• CPC Class Codes: H10K 59/35 comprising red-green-blue [RGB] subpixels

Abstract

In an active matrix type display apparatus according to the present invention, the following measures are provided when stacking, on a substrate, a device layer (light emitting portion) formed by arranging a light emitting portion in a sub-pixel unit and a circuit layer (sub-pixel circuit) formed by arranging a sub-pixel circuit for driving the light emitting portion in the sub-pixel unit: the apparatus has a stripe arrangement as the arrangement of sub-pixel circuits and a delta arrangement as the arrangement of light emitting portions. Therefore, it is possible to improve reliability of the sub-pixel circuits while utilizing the advantages of the delta arrangement of the light emitting portions, and thus realize a high-reliability, high-definition, and high-brightness display apparatus.

Claims

1. An active matrix type display apparatus formed by stacking, on a substrate, a device layer formed by arranging a light emitting portion in a sub-pixel unit and a circuit layer formed by arranging a sub-pixel circuit for driving a light emitting device of said light emitting portion in the sub-pixel unit, said active matrix type display apparatus comprising:

a stripe sub-pixel arrangement in which said sub-pixel circuits exist on straight lines in both a row direction and a column direction; and

a delta sub-pixel arrangement in which said light emitting portions have twice a sub-pixel pitch in the row direction of said sub-pixel arrangement of said sub-pixel circuits and ½

of a sub-pixel pitch in the column direction of said sub-pixel arrangement of said sub-pixel circuits, and a phase difference in sub-pixel arrangement between two rows adjacent to each other is ½

of a pitch in the row direction of said light emitting portions.

2. An active matrix type display apparatus as claimed in claim 1,

wherein three of said light emitting devices, emitting pieces of light of three different colors, form one pixel as a unit;

said light emitting devices are arranged in delta relation in which sub-pixels of an identical luminescent color are not adjacent to each other and central positions of three sub-pixels of the three different colors within one pixel are adjacent to one another and form a triangle; and

sub-pixels adjacent to one another in the column direction are arranged in alternating normal and inverted delta shapes, or triangles whose tops and bottoms are inverted with respect to each other, within two sub-pixel rows.

3. An active matrix type display apparatus as claimed in claim 1,

wherein connecting portions for connecting said light emitting portions with said sub-pixel circuits in two sub-pixels of said sub-pixel circuits adjacent to each other in the row direction form a unit, and are arranged at positions different from each other between the two sub-pixels.

4. An active matrix type display apparatus as claimed in claim 1,

wherein said connecting portions are arranged outside light emitting regions of determined shape in said light emitting portions.

5. An active matrix type display apparatus as claimed in claim 3,

wherein said connecting portions are arranged outside light emitting regions of determined shape in said light emitting portions.

6. An active matrix type display apparatus as claimed in claim 3,

wherein layouts of circuit devices in said sub-pixel circuits are identical between said two sub-pixels.

7. An active matrix type display apparatus as claimed in claim 1,

wherein layouts of circuit devices in said two sub-pixels of said sub-pixel circuits are symmetrical with respect to a boundary line between columns of said sub-pixel circuits.

8. An active matrix type display apparatus as claimed in claim 6,

wherein the layouts of circuit devices in said two sub-pixels of said sub-pixel circuits are symmetrical with respect to a boundary line between columns of said sub-pixel circuits.

9. An active matrix type display apparatus as claimed in claim 7,

wherein said sub-pixel circuits have a power supply line routed at a boundary of said two sub-pixels along the column direction, and the power supply line is shared between said two sub-pixels.

10. An active matrix type display apparatus as claimed in claim 1,

wherein said sub-pixel circuits in two rows adjacent to each other form a unit, and layouts of circuit devices in sub-pixels of the two rows are symmetrical with respect to a boundary line between the rows.

11. An active matrix type display apparatus as claimed in claim 6,

wherein said sub-pixel circuits in two rows adjacent to each other form a unit, and layouts of circuit devices in sub-pixels of the two rows are symmetrical with respect to a boundary line between the rows.

12. An active matrix type display apparatus as claimed in claim 10,

wherein said sub-pixel circuits have a scanning line routed at a boundary of the sub-pixels of said two rows along the row direction, and the scanning line is shared between the sub-pixels of said two rows.

13. An active matrix type display apparatus as claimed in claim 1,

wherein said sub-pixel circuit has a slit formed in the vicinity of a connecting portion of a circuit device present in a pattern of wiring, along a direction of the wiring.

14. An active matrix type display apparatus as claimed in claim 1,

wherein said light emitting device is an organic electroluminescence device having a first electrode, a second electrode, and an organic layer including a light emitting layer between the electrodes.

15. An active matrix type display apparatus as claimed in claim 1,

wherein said sub-pixel circuit is a thin film transistor circuit.

17. An active matrix type display apparatus as claimed in claim 16,

wherein said light emitting device is an organic electroluminescence device having a first electrode, a second electrode, and an organic layer including a light emitting layer between the electrodes.

18. An active matrix type display apparatus as claimed in claim 16,

wherein said sub-pixel circuit is a thin film transistor circuit.

16. An active matrix type display apparatus formed by arranging sub-pixel circuits for driving light emitting devices of light emitting portions in sub-pixel units in a matrix manner,

wherein said sub-pixel circuits have a slit formed in the vicinity of a connecting portion of a circuit device present in a pattern of wiring, along a direction of the wiring.