DISPLAY APPARATUS

Abstract

A display apparatus includes; a switching transistor, a driving transistor, a control terminal of which is connected to an output terminal of the switching transistor, a storage capacitor provided between the output terminal of the switching transistor and an output terminal of the driving transistor, and a complementary metal oxide semiconductor (“CMOS”) transistor connected in parallel with a control terminal of the switching transistor.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The above and/or other aspects, features and advantages of the prevent invention will become apparent and more readily appreciated from the following description of the exemplary embodiments, taken in conjunction with the accompanying drawings, in which:

FIG. 1 is an equivalent circuit diagram of a first exemplary embodiment of a display apparatus according to the present invention;

FIG. 2 is an output waveform diagram of the first exemplary embodiment of a display apparatus in FIG. 1;

FIG. 3 is a cross-sectional view of the first exemplary embodiment of a display apparatus of FIG. 1;

FIG. 4 is an equivalent circuit diagram of a second exemplary embodiment of a display apparatus according the present invention;

FIG. 5 is an equivalent circuit diagram of a third exemplary embodiment of a display apparatus according to the present invention;

FIG. 6 is an output waveform diagram of the third exemplary embodiment of a display apparatus of FIG. 5;

FIG. 7 is a cross-sectional view illustrating the third exemplary embodiment of display apparatus of FIG. 5; and

FIG. 8 is an equivalent circuit diagram of a fourth exemplary embodiment of a display apparatus according to the present invention.

Claims

1. A display apparatus, comprising: a switching transistor;a driving transistor, a control terminal of which is connected to an output terminal of the switching transistor;a storage capacitor provided between the output terminal of the switching transistor and an output terminal of the driving transistor; anda complementary metal oxide semiconductor transistor connected in parallel with a control terminal of the switching transistor.

2. The display apparatus according to claim 1, further comprising a power supply line which supplies a driving voltage to the driving transistor, wherein the complementary metal oxide semiconductor transistor comprises a first transistor, and a second transistor connected in parallel with the first transistor,the first transistor is one of an n-type transistor and a p-type transistor,the second transistor is of a type opposite the first transistor, andthe second transistor is connected in series with the driving transistor.

3. The display apparatus according to claim 2, wherein the switching transistor comprises an n-type transistor, and the second transistor turns off when a high voltage is supplied to the switching transistor.

4. The display apparatus according to claim 3, wherein an input terminal of the second transistor is connected to the power supply line, and an output terminal thereof is connected to an input terminal of the driving transistor.

5. The display apparatus according to claim 4, further comprising a pixel electrode, and a common electrode disposed substantially opposite the pixel electrode, wherein the first transistor is connected between the common electrode and the output terminal of the driving transistor.

6. The display apparatus according to claim 3, further comprising a pixel electrode, and a common electrode disposed substantially opposite the pixel electrode, wherein an input terminal of the second transistor is connected to the output terminal of the driving transistor, and an output terminal of the second transistor is connected to the pixel electrode.

7. The display apparatus according to claim 6, wherein the first transistor is connected between the output terminal of the driving transistor and the common electrode.

8. The display apparatus according to claim 3, wherein the switching transistor comprises a semiconductor layer including amorphous silicon.

9. The display apparatus according to claim 3, wherein the switching transistor comprises a semiconductor layer including polysilicon.

10. The display apparatus according to claim 2, wherein the switching transistor comprises a p-type transistor, and the second transistor turns off when a low voltage is supplied to the switching transistor.

11. The display apparatus according to claim 10, wherein an input terminal of the second transistor is connected to the power supply line, and an output terminal thereof is connected to an input terminal of the driving transistor.

12. The display apparatus according to claim 11, further comprising a pixel electrode, and a common electrode disposed substantially opposite the pixel electrode, wherein the first transistor is connected between the common electrode and the output terminal of the driving transistor.

13. The display apparatus according to claim 10, further comprising a pixel electrode, and a common electrode corresponding to the pixel electrode, wherein an input terminal of the second transistor is connected to the output terminal of the driving transistor, and an output terminal of the second transistor is connected to the pixel electrode.

14. The display apparatus according to claim 13, wherein the first transistor is connected between the output terminal of the driving transistor and the common electrode.

15. The display apparatus according to claim 10, wherein the switching transistor comprises a semiconductor layer including polysilicon.

16. The display apparatus according to claim 10, wherein the switching transistor comprises a semiconductor layer including amorphous silicon.

17. A display apparatus, comprising: a switching transistor;a driving transistor, a control terminal of which is connected to an output terminal of the switching transistor;a storage capacitor provided between the output terminal of the switching transistor and an output terminal of the driving transistor; anda first transistor and a second transistor respectively connected in parallel with a control terminal of the switching transistor,wherein the first transistor is one of an n-type transistor and a p-type transistor, and the second transistor is of a type opposite the first transistor.

18. The display apparatus according to claim 17, further comprising a power supply line which supplies a driving voltage to the driving transistor, wherein the second transistor is connected in series with the driving transistor.

19. The display apparatus according to claim 18, further comprising a pixel electrode, and a common electrode disposed substantially opposite the pixel electrode, wherein the first transistor is connected between the common electrode and the output terminal of the driving transistor.

20. A method of manufacturing a display apparatus, the method comprising: forming a switching transistor;forming a driving transistor, a control terminal of which is connected to an output terminal of the switching transistor;forming a storage capacitor provided between the output terminal of the switching transistor and an output terminal of the driving transistor; andforming a complementary metal oxide semiconductor transistor connected in parallel with a control terminal of the switching transistor.