Touch screen display apparatus

• US 8,952,900 B2
• Filed: 08/09/2010
• Issued: 02/10/2015
• Est. Priority Date: 08/11/2009
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Lee, Moon-Jae, Song, Won-Jun, Lee, Sun-Hee, Lee, Young-Hee, Kim, Mu-Hyun, Kim, Ji-Young, Kim, Hye Dong
• Primary Examiner(s): Johnson, Gerald
• Application Number:
  US12/852,702
• Publication Number:
  US 20110037716A1
• Time in Patent Office: 1,646 Days
• Field of Search: 345/173, 345/206
• US Class Current: 345/173
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/042 by opto-electronic means
• CPC Class Codes: Y10T 29/49124 On flat or curved insulated base, e.g., printed circuit, etc.

Abstract

A touch screen display apparatus for easily sensing the touch of a user. The touch screen display apparatus includes: a substrate; a display unit formed on the substrate; and a touch panel disposed to face the display unit, where the touch panel comprises a sealing substrate, a first electrode formed on the sealing substrate, a second electrode spaced apart from the first electrode, and a light receiving unit comprising an organic material interposed between the first electrode and the second electrode.

Claims

1. A touch screen display apparatus comprising:

a substrate;

a display unit formed on the substrate; and

a touch panel disposed to face the display unit,

wherein the touch panel comprises a sealing substrate and a light sensor for sensing light, which comprises a first electrode formed on the sealing substrate, a second electrode spaced apart from the first electrode, and a light receiving unit comprising an organic material and interposed between the first electrode and the second electrode.

2. The touch screen display apparatus of claim 1, wherein the light receiving unit comprises a phthalocyanine compound containing at least one metal selected from the group consisting of copper (Cu), iron (Fe), nickel (Ni), cobalt (Co), manganese (Mn), aluminum (Al), palladium (Pd), tin (Sn), indium (In), lead (Pb), titanium (Ti), rubidium (Rb), vanadium (V), gallium (Ga), terbium (Tb), cerium (Ce), lanthanum (La), and zinc (Zn).

3. The touch screen display apparatus of claim 2, wherein the light receiving unit is formed of a bi-layer comprising a layer formed of a phthalocyanine compound containing at least one material selected from the group consisting of copper (Cu), iron (Fe), nickel (Ni), cobalt (Co), manganese (Mn), aluminum (Al), palladium (Pd), tin (Sn), indium (In), lead (Pb), titanium (Ti), rubidium (Rb), vanadium (V), gallium (Ga), terbium (Tb), cerium (Ce), lanthanum (La), and zinc (Zn) and a layer formed of C60.

4. The touch screen display apparatus of claim 2, wherein the light receiving unit comprises a mixing layer mixed with C60 and a phthalocyanine compound containing at least one metal selected from the group consisting of copper (Cu), iron (Fe), nickel (Ni), cobalt (Co), manganese (Mn), aluminum (AI), palladium (Pd), tin (Sn), indium (In), lead (Pb), titanium (Ti), rubidium (Rb), vanadium (V), gallium (Ga), terbium (Tb), cerium (Ce), lanthanum (La), and zinc (Zn).

5. The touch screen display apparatus of claim 1, wherein the first electrode and the second electrode are each formed as stripes where the first electrode extends in one direction and the second electrode extends in another direction such that the electrodes cross each other.

6. The touch screen display apparatus of claim 5, wherein the light receiving unit is a plurality of light receiving units disposed to correspond to areas where the first electrode and the second electrode cross each other.

7. The touch screen display apparatus of claim 1, wherein the display unit comprises light emitting units on a non-light emitting unit, and the first electrode, the second electrode, and the light receiving unit are formed to correspond to exposed regions of the non-light emitting unit.

8. The touch screen display apparatus of claim 1, wherein the electrode that is disposed closer to external light from among the first electrode and the second electrode is formed as a transmissive electrode so that external light penetrates through the transmissive electrode.

9. The touch screen display apparatus of claim 1, wherein the electrode that is disposed closer to external light from among the first electrode and the second electrode comprises at least one oxide selected from the group consisting of indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), Al-doped zinc oxide (AZO), and indium oxide (In₂O₃).

10. The touch screen display apparatus of claim 1, wherein the electrode that is disposed farther from external light from among the first electrode and the second electrode comprises a metal.

11. The touch screen display apparatus of claim 1, wherein the first electrode is formed on the sealing substrate to face the display unit.

12. The touch screen display apparatus of claim 1, wherein the first electrode is formed on a surface opposite to the surface facing the display unit on the sealing substrate.

13. The touch screen display apparatus of claim 1, wherein the display unit comprises an organic light emitting device (OLED), a liquid crystal device or an electron emitter.

14. The touch screen display apparatus of claim 13, wherein the display unit comprises an organic light emitting device (OLED).

15. The touch screen display apparatus of claim 14, wherein the OLED is a passive matrix type OLED or an active matrix type OLED.

16. A method of manufacture for a touch screen display apparatus comprising:

forming a display panel on a substrate;

forming a touch panel on the substrate to face the display unit; and

bonding the display panel and the substrate with a sealant, wherein;

the touch panel comprises a sealing substrate and a light sensor for sensing light, which comprises a first electrode formed on the sealing substrate, a second electrode spaced apart from the first electrode, and a light receiving unit comprising an organic material and interposed between the first electrode and the second electrode, all facing in the direction of the display panel, and the display panel comprises a plurality of light emitting units on a non-light emitting unit, with the plurality of light emitting units facing the touch panel.

17. The method of claim 16, wherein the plurality of light receiving units comprise a phthalocyanine compound containing at least one metal selected from the group consisting of copper (Cu), iron (Fe), nickel (Ni), cobalt (Co), manganese (Mn), aluminum (Al), palladium (Pd), tin (Sn), indium (In), lead (Pb), titanium (Ti), rubidium (Rb), vanadium (V), gallium (Ga), terbium (Tb), cerium (Ce), lanthanum (La), and zinc (Zn).

18. The method of claim 16, wherein the first electrode and the second electrode are each formed as stripes where the first electrode extends in one direction and the second electrode extends in another direction such that the electrodes cross each other.

19. The method of claim 18, wherein the light receiving unit is a plurality of light receiving units disposed to correspond to areas where the first electrode and the second electrode cross each other.

20. The method of claim 16, wherein the display unit comprises light emitting units on a non-light emitting unit, and the first electrode, the second electrode, and the light receiving unit are formed to correspond to exposed regions of the non-light emitting unit.

21. The method of claim 16, wherein the display unit comprises an organic light emitting device (OLED), a liquid crystal device or an electron emitter.

22. The method of claim 21, wherein the display unit comprises an organic light emitting device (OLED).