IP Library Granted Patent US 7,924,269
Granted Patent B2
US 7,924,269 · App. 11/311,986 · Granted Apr 12, 2011

Display devices and methods forming the same

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Quick Facts
Patent No.
US 7,924,269
App. No.
11/311,986
Granted
Apr 12, 2011
Kind
B2
Abstract

Display devices and methods forming the same. A digitizer sensor board is integrated on an upper substrate or a lower substrate of a display panel to provide a display device. In the display device, the display panel displays images, and the digitizer sensor board is integrated into the display panel to sense position of a position pointer or finger contact on a surface.

Claims (46)

1. A display device, comprising:

a display panel, wherein the display panel comprises an upper substrate having a color filter and a lower substrate having a thin film transistor (TFT) array;

a digitizer sensor film integrated in the display panel for sensing position of a position pointer on a surface of the display panel; and

a control unit coupled to the display panel and the digitizer sensor film according to an image signal from a host system via an interface, driving the display panel and generating a scan timing signal to the digitizer sensor film,

wherein the display panel further comprises a non-transparent area generated by a black matrix in the color filter, in the top substrate, and coils and conductor wires in the digitizer sensor film are formed in the non-transparent area.

2. The display device as claimed in claim 1 , wherein the digitizer sensor film is located between the upper substrate and the lower substrate.

3. The display device as claimed in claim 1 , wherein the digitizer sensor film is integrated between the color filter and the upper substrate.

4. The display device as claimed in claim 1 , wherein the digitizer sensor film is integrated between the TFT array and the lower substrate.

5. A display system, comprising:

a display device as claimed in claim 1 .

6. The display system as claimed in claim 5 , wherein the digitizer sensor film executes a sensing operation to detect the position of a position pointer or finger contact on the surface in response to the scan timing signal.

7. The display system as claimed in claim 5 , wherein the image signal comprises image data and a clock signal, and the control unit generates the scan timing signal according to the clock signal.

8. The display system as claimed in claim 5 , wherein the control unit is a chip on glass (COG) on the display module.

9. The display system as claimed in claim 5 , the control unit is mounted on a flexible printed circuit board (FPC) coupled to the display panel.

10. The display system as claimed in claim 5 , wherein the display panel is a liquid crystal display (LCD) module, an organic light-emitting diode (OLED) display module or a field emission display (FED) module.

11. The display system as claimed in claim 5 , wherein the digitizer sensor film is a capacitive sensing digitizer module, a resistive sensing digitizer module, an acoustic wave sensing digitizer module, a piezoelectric force sensing digitizer module, an electrostatic sensing digitizer module, or a sonic pulse sensing digitizer module.

12. The display system as claimed in claim 5 , further comprising:

a shield film laminated with the display panel to screen external noise.

13. The display system as claimed in claim 12 , further comprising a backlight device coupled to the display panel.

14. The display system as claimed in claim 12 , further comprising a reflector laminated with the display panel to reflect light.

15. An electronic device, comprising:

a display system as claimed in claim 5 ; and

a DC/DC converter operatively coupled to the display system, powering the display system to display images and sense position of a position pointer or finger contact on a surface.

16. The electronic device as claimed in claim 15 , wherein the electronic device is a display monitor, a notebook computer, a tablet computer, a cellular phone or a personal digital assistant (PDA).

17. A fabrication method of a display panel, comprising:

forming a digitizer sensor film on a glass substrate to serve as an upper substrate of the display panel, wherein the upper substrate includes a color filter and a black matrix, wherein a non-transparent area is generated by the black matrix, and coils and conductor wires in the digitizer sensor film are formed in the non-transparent area;

forming a thin film transistor (TFT) array to serve as a lower substrate of the display panel;

assembling the upper substrate and the lower substrate of the display panel; and

providing a control unit coupled to the display panel and the digitizer sensor film according to an image signal from a host system via an interface, driving the display panel and generating a scan timing signal to the digitizer sensor film.

18. The fabrication method as claimed in claim 17 , further comprising forming a color filter on the digitizer sensor film of the upper substrate.

19. The fabrication method as claimed in claim 18 , further comprising injecting liquid crystal material between the upper substrate and the lower substrate.

20. The fabrication method as claimed in claim 19 , wherein the display panel is a liquid crystal display (LCD) panel.

21. The fabrication method as claimed in claim 17 , wherein the display panel is an organic light-emitting diode (OLED) display panel or a field emission display (FED) panel.

22. The fabrication method as claimed in claim 17 , wherein the digitizer sensor film is a capacitive sensing digitizer film, a resistive sensing digitizer film, an acoustic wave sensing digitizer film, a piezoelectric force sensing digitizer film, an electrostatic sensing digitizer film, or a sonic pulse sensing digitizer film.

23. The fabrication method as claimed in claim 17 , wherein the digitizer sensor film is located between the upper substrate and the lower substrate.

24. A fabrication method of a display panel, comprising:

forming a digitizer sensor film on a glass substrate;

forming a thin film transistor (TFT) array on the digitizer sensor film, such that the TFT array and the digitizer sensor film on the glass substrate serve as a lower substrate of a display panel;

forming an upper substrate of the display panel;

assembling the upper substrate and the lower substrate of the display panel, wherein the digitizer sensor film is located between the upper substrate and the lower substrate; and

providing a control unit coupled to the display module and the digitizer sensor film according to an image signal from a host system via an interface, driving the display panel and generating a scan timing signal to the digitizer sensor film.

25. The fabrication method as claimed in claim 24 , further comprising forming a color filter on the upper substrate.

26. The fabrication method as claimed in claim 25 , further comprising injecting liquid crystal material between the upper substrate and the lower substrate.

27. The fabrication method as claimed in claim 26 , wherein the display panel is a liquid crystal display (LCD) panel.

28. The fabrication method as claimed in claim 24 , wherein the display panel is an organic light-emitting diode (OLED) display panel or a field emission display (FED) panel.

29. The fabrication method as claimed in claim 24 , wherein the digitizer sensor film is a capacitive sensing digitizer film, a resistive sensing digitizer film, an acoustic wave sensing digitizer film, a piezoelectric force sensing digitizer film, an electrostatic sensing digitizer film, or a sonic pulse sensing digitizer film.

Assignments (7)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 18, 2024
From: INNOLUX CORPORATION
To: RED OAK INNOVATIONS LIMITED
Reel/Frame 069206/0903 →
CHANGE OF NAME Recorded Apr 7, 2014
From: CHIMEI INNOLUX CORPORATION
To: INNOLUX CORPORATION
Reel/Frame 032621/0718 →
MERGER Recorded Mar 8, 2011
From: TPO DISPLAYS CORP.
To: CHIMEI INNOLUX CORPORATION
Reel/Frame 025919/0338 →
MERGER Recorded Mar 8, 2011
From: TPO DISPLAYS CORP.
To: CHIMEI INNOLUX CORPORATION
Reel/Frame 025918/0759 →
CHANGE OF NAME Recorded Jan 23, 2011
From: TOPPOLY OPTOELECTRONICS CORP.
To: TPO DISPLAYS CORP.
Reel/Frame 025681/0254 →
CHANGE OF NAME Recorded Jan 5, 2011
From: TOPPOLY OPTOELECTRONICS CORP.
To: TPO DISPLAYS CORP.
Reel/Frame 025584/0544 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 20, 2005
From: CHEN, DIN-GUO; LEE, YING-CHIH; HO, SHYUAN-JENG
To: TOPPOLY OPTOELECTRONICS CORP.
Reel/Frame 017355/0043 →